CN216646959U - Headband adjusting mechanism and electronic device - Google Patents

Abstract

A headband adjusting mechanism and an electronic device are provided. The headband adjusting mechanism is suitable for adjusting at least two headband and comprises a shell and an adjusting knob; the shell is suitable for at least two head belts to penetrate through; the adjusting knob is rotatably arranged on the shell and at least partially accommodated in the shell, and the adjusting knob is used for tightening and loosening the at least two head bands. The adjusting knob for tightening and loosening the headband is partially accommodated in the shell, so that the whole thickness of the headband adjusting mechanism is reduced, the whole size of the electronic device using the headband adjusting mechanism is lightened, and the effects of providing light and comfortable wearing experience, reducing burden and discomfort of long-term use and the like are achieved.

Description

Translated fromChinese

头带调整机构与电子装置Headband Adjustment Mechanism and Electronics

技术领域technical field

本实用新型涉及一种调整机构，尤其涉及一种头带调整机构与包括其的电子装置。The utility model relates to an adjustment mechanism, in particular to a headband adjustment mechanism and an electronic device comprising the same.

背景技术Background technique

随着科技的进步，头戴式装置不断地推陈出新，无论是虚拟现实、增强现实或混合现实等沉浸式体验的效果越来越优异，因此也逐渐广泛地导入游戏、媒体、远端临场、零售、教育、医疗等各种不同应用。尤其，近年来远距离学习或工作逐渐成为主流，更大幅增加了对头戴式装置的需求。With the advancement of technology, head-mounted devices are constantly being introduced, and the effects of immersive experiences such as virtual reality, augmented reality, or mixed reality are getting better and better, so they are gradually being widely introduced into games, media, telepresence, retail , education, medical and other different applications. In particular, in recent years, distance learning or work has gradually become mainstream, which has greatly increased the demand for head-mounted devices.

通常，为了适应各种不同的头形尺寸，头戴式装置一般在头戴处设有一调节装置，以便于使用者自行调整头带至所需的长度。然而，目前市面上大部分调整头带的装置的尺寸偏大，与之配合的头带宽度也较宽，不仅增加整体装置的尺寸与重量而容易造成长时间使用的负担与不适感，也会使整个装置外观显得笨重而影响消费者购买的欲望。Generally, in order to adapt to various head shapes, the head-mounted device is generally provided with an adjustment device at the head-mounted position, so that the user can adjust the headband to a desired length. However, most of the devices for adjusting the headband on the market are large in size, and the width of the headband is also wider, which not only increases the size and weight of the overall device, but also easily causes the burden and discomfort of long-term use. It makes the appearance of the whole device appear bulky and affects the desire of consumers to buy.

因此，需要提供一种头带调整机构以及包括其的电子装置来解决上述问题。Therefore, there is a need to provide a headband adjustment mechanism and an electronic device including the same to solve the above problems.

实用新型内容Utility model content

有鉴于此，本实用新型提供一种头带调整机构与包括其的电子装置，有助于使整体尺寸轻量化，以达到提供轻盈与舒适的穿戴体验及降低长时间使用的负担与不适感等目的。In view of this, the present invention provides a headband adjustment mechanism and an electronic device including the same, which helps to reduce the overall size, so as to provide a light and comfortable wearing experience and reduce the burden and discomfort of long-term use. Purpose.

根据本实用新型的一实施例所公开的一种头带调整机构，头带调整机构适于调整至少两个头带，包括一外壳以及一调整旋钮。外壳适于供头带穿设。调整旋钮可转动地设置于外壳，且至少部分地容置于外壳当中。调整旋钮用于收紧和放松头带。According to a headband adjustment mechanism disclosed in an embodiment of the present invention, the headband adjustment mechanism is suitable for adjusting at least two headbands, and includes a casing and an adjustment knob. The shell is suitable for the headgear to pass through. The adjustment knob is rotatably disposed in the casing and at least partially accommodated in the casing. The adjustment knob is used to tighten and loosen the headband.

根据本实用新型的一实施例所公开的一种电子装置，电子装置包括至少两个头带以及一头带调整机构。头带调整机构包括一外壳以及一调整旋钮。外壳适于供头带穿设。调整旋钮可转动地设置于外壳，且至少部分地容置于外壳当中。调整旋钮用于收紧和放松头带。According to an electronic device disclosed in an embodiment of the present invention, the electronic device includes at least two headbands and a headband adjustment mechanism. The headband adjustment mechanism includes a casing and an adjustment knob. The shell is suitable for the headgear to pass through. The adjustment knob is rotatably disposed in the casing and at least partially accommodated in the casing. The adjustment knob is used to tighten and loosen the headband.

应用本实用新型实施例的头带调整机构与电子装置，由于其用于收紧和放松头带的调整旋钮部分地容置于外壳当中，从而有助于降低头带调整机构的整体厚度，藉此，有助于使应用此头带调整机构的电子装置的整体尺寸轻量化，达到提供轻盈与舒适的穿戴体验及降低长时间使用的负担与不适感等效果。The headband adjustment mechanism and the electronic device applying the embodiments of the present invention, because the adjustment knob for tightening and loosening the headband is partially accommodated in the casing, thereby helping to reduce the overall thickness of the headband adjustment mechanism, thereby reducing the overall thickness of the headband adjustment mechanism. Therefore, the overall size of the electronic device to which the headband adjustment mechanism is applied can be reduced in size, so as to provide a light and comfortable wearing experience, and reduce the burden and discomfort of long-term use.

以上关于本实用新型公开内容的说明及以下的实施方式的说明，是用以示范与解释本实用新型的精神与原理，并且提供本实用新型的权利要求书更进一步的解释。The above description of the disclosure of the present invention and the description of the following embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide further explanation for the claims of the present invention.

附图说明Description of drawings

图1显示应用有本实用新型的一实施例的头带调整机构的电子装置的局部立体示意图。FIG. 1 shows a partial perspective view of an electronic device to which a headband adjustment mechanism according to an embodiment of the present invention is applied.

图2显示本实用新型的一实施例的头带调整机构的分解示意图。FIG. 2 shows an exploded schematic view of a headband adjustment mechanism according to an embodiment of the present invention.

图3显示本实用新型的一实施例的头带调整机构的局部放大剖切示意图。FIG. 3 shows a partially enlarged cross-sectional schematic diagram of a headband adjustment mechanism according to an embodiment of the present invention.

图4显示本实用新型的一实施例的头带调整机构的局部放大平面示意图。FIG. 4 shows a partial enlarged plan view of a headband adjustment mechanism according to an embodiment of the present invention.

图5～6显示本实用新型的一实施例的头带调整机构的齿轮部与头带在不同视角的啮合示意图。FIGS. 5-6 are schematic diagrams showing the meshing of the gear portion of the headband adjustment mechanism and the headband at different viewing angles according to an embodiment of the present invention.

图7显示本实用新型的一实施例的头带调整机构的操作示意图。FIG. 7 shows a schematic view of the operation of the headband adjustment mechanism according to an embodiment of the present invention.

图8显示本实用新型的另一实施例的头带调整机构的分解示意图。FIG. 8 shows an exploded schematic view of a headband adjustment mechanism according to another embodiment of the present invention.

图9显示图8的头带调整机构的调整旋钮、致动件与止挡件的分解示意图。FIG. 9 shows an exploded schematic view of an adjustment knob, an actuating member and a stopper of the headband adjustment mechanism of FIG. 8 .

图10显示图8的头带调整机构的局部放大俯视示意图。FIG. 10 shows a partially enlarged top view of the headband adjustment mechanism of FIG. 8 .

图11显示图8的头带调整机构的局部放大侧剖示意图。FIG. 11 is a partially enlarged schematic side sectional view of the headband adjustment mechanism of FIG. 8 .

主要组件符号说明：Explanation of main component symbols:

1、1' 头带调整机构1. 1' headband adjustment mechanism

9 电子装置9 Electronics

10 外壳10 shell

11 第一壳件11 The first shell

12 第二壳件12 Second shell

20、20' 调整旋钮20, 20' adjustment knob

21 组装柱21 Assembling the column

22 抵接柱22 Abutment post

30、30' 致动件30, 30' Actuator

31 弹性棘爪31 Elastic pawl

32 齿轮部32 gear section

33 组装孔33 Assembly holes

35 第一齿轮部35 First gear part

36 第二齿轮部36 Second gear section

40、40' 止挡件40, 40' stop

41 内棘轮41 Inner ratchet

42 穿孔42 perforation

43 弹片43 Shrapnel

50 垫片50 Spacers

81～82 头带81～82 Headband

121 容置空间121 accommodating space

122 轴柱122 Axle Post

811、821 齿条部811, 821 Rack part

812、822 带部812, 822 belt

A1、B1、B2 箭头A1, B1, B2 Arrows

AX 转轴AX reel

O 开口O opening

S 容置槽S Reservoir

W1、W2 宽度W1, W2 width

具体实施方式Detailed ways

以下将以实施方式详细叙述本实用新型的详细特征以及优点，其内容足以使任何本领域的技术人员了解本实用新型的技术内容并据以实施，但非以任何观点限制本实用新型的范畴。The detailed features and advantages of the present invention will be described in detail below by means of embodiments, the content of which is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement accordingly, but does not limit the scope of the present invention in any point of view.

以下实施例将搭配附图进行说明，为达图面整洁的目的，一些公知惯用的结构与元件在附图可能会以简单示意的方式绘示。并且，附图中部分的特征可能会略为放大或改变其比例或尺寸，以达到便于理解与观看本实用新型的技术特征的目的，但这并非用于限定本实用新型。此外，为便于观看，部分附图中的某些结构线可能以虚线表示。The following embodiments will be described in conjunction with the accompanying drawings. For the purpose of neat and tidy drawings, some well-known and conventional structures and elements may be shown in a simple and schematic manner in the accompanying drawings. In addition, some features in the drawings may be slightly enlarged or their proportions or dimensions are changed to achieve the purpose of facilitating the understanding and viewing of the technical features of the present invention, but this is not intended to limit the present invention. Additionally, some of the structural lines in some of the drawings may be represented by dashed lines for ease of viewing.

此外，下文中可能会使用“端”、“部”、“部分”、“区域”、“处”等术语来描述特定元件与结构或是其上或其之间的特定技术特征，但这些元件与结构并不受这些术语所限制。以下文中也可能使用诸如“实质上”、“约”以及“大致上”等术语，用于描述所修饰的情况或事件可能存在的合理或可接受的偏差量，但仍可达到所预期的结果。In addition, terms such as "end", "portion", "portion", "region", "at" and the like may be used hereinafter to describe specific elements and structures or specific technical features on or between them, but these elements AND structures are not limited by these terms. Hereinafter, terms such as "substantially", "about" and "substantially" may also be used to describe a reasonable or acceptable amount of deviation from the circumstances or events that may be modified and still achieve the desired result .

另外，下文中可能使用“至少一”来描述所指元件的数量，但除非另有明确说明，其不应仅限于数量为“仅有一”的情况。下文中也可能使用“和/或”的术语，其应被理解为包括所列出项目中的任一者及一者或多者的所有组合。Additionally, hereinafter, "at least one" may be used to describe the quantity of a referenced element, but unless expressly stated otherwise, it should not be limited to "only one". The term "and/or" may also be used hereinafter, which should be understood to include any and all combinations of one or more of the listed items.

首先，请参阅图1～4，图1显示应用有本实用新型的一实施例的头带调整机构1的电子装置9的局部立体示意图，图2显示头带调整机构1的分解示意图，图3显示头带调整机构1的局部放大剖切示意图，而图4显示头带调整机构1的局部放大平面示意图。电子装置9可包括头带调整机构1以及经由一头带81与一头带82衔接的一多媒体播放模块(未绘示)，以构成一种适于穿戴于头部的头戴式显示器。所述的多媒体播放模块可以但不限于是能提供增强现实、虚拟现实或混合现实等体验的任何现有的合适显示装置。头带调整机构1可用于调整头带81与头带82所露出的长度(或者说，调整头带81与头带82对于头部的松紧程度)，以使电子装置9能适应于各种不同的头形尺寸，详细说明如下。First, please refer to FIGS. 1 to 4 . FIG. 1 shows a partial perspective view of anelectronic device 9 to which theheadband adjustment mechanism 1 according to an embodiment of the present invention is applied, FIG. 2 shows an exploded schematic view of theheadband adjustment mechanism 1 , and FIG. 3 A partially enlarged cutaway schematic view of theheadband adjustment mechanism 1 is shown, and FIG. 4 is a partially enlarged schematic plan view of theheadband adjustment mechanism 1 . Theelectronic device 9 may include aheadband adjustment mechanism 1 and a multimedia playback module (not shown) connected with aheadband 82 via aheadband 81 to form a head-mounted display suitable for wearing on the head. The multimedia playback module can be, but is not limited to, any existing suitable display device that can provide experiences such as augmented reality, virtual reality, or mixed reality. Theheadband adjustment mechanism 1 can be used to adjust the exposed lengths of theheadbands 81 and 82 (or, in other words, to adjust the tightness of theheadbands 81 and 82 to the head), so that theelectronic device 9 can be adapted to various different The size of the head shape is described in detail below.

在本实施例中，头带调整机构1可包括一外壳10、一调整旋钮20、一致动件30以及一止挡件40。大致上，调整旋钮20、致动件30与止挡件40均容置于外壳10，惟调整旋钮20的部分裸露于外壳10外(或者说，调整旋钮20至少部分容置于外壳10当中)。藉由调整旋钮20与致动件30相连动，可让使用者藉由操作调整旋钮20来调整穿入外壳10的头带81与头带82的长度(即调整头带81与头带82所露出的长度)。并且，藉由致动件30与止挡件40彼此配合，可用于定位并止挡致动件30，从而维持头带81与头带82在当下的位置。In this embodiment, theheadband adjustment mechanism 1 may include ahousing 10 , anadjustment knob 20 , an actuatingmember 30 and astopper 40 . Generally, theadjustment knob 20 , the actuatingmember 30 and thestopper 40 are all housed in thehousing 10 , but theadjustment knob 20 is partially exposed outside the housing 10 (or in other words, theadjustment knob 20 is at least partially housed in the housing 10 ) . By connecting theadjustment knob 20 with the actuatingmember 30 , the user can adjust the lengths of theheadband 81 and theheadband 82 penetrating thehousing 10 by operating the adjustment knob 20 (that is, to adjust the length of theheadband 81 and theheadband 82 . exposed length). Furthermore, the actuatingmember 30 and thestopper member 40 cooperate with each other to position and stop the actuatingmember 30 , thereby maintaining the current position of theheadband 81 and theheadband 82 .

具体来说，外壳10可包括一第一壳件11以及一第二壳件12，第一壳件11与第二壳件12可由任何合适的材质所构成，且可由任何合适的方式相固定，第二壳件12可定义出一容置空间121，以用于收容调整旋钮20、致动件30、止挡件40以及至少部分的头带81与头带82。此外，外壳10的第二壳件12还可具有两个开口O，分别连通于容置空间121的相对两端，以分别用于供头带81与头带82穿入容置空间121。Specifically, thehousing 10 can include afirst shell 11 and asecond shell 12, thefirst shell 11 and thesecond shell 12 can be made of any suitable material, and can be fixed in any suitable way, Thesecond casing 12 may define anaccommodating space 121 for accommodating the adjustingknob 20 , the actuatingmember 30 , thestopper 40 and at least part of theheadband 81 and theheadband 82 . In addition, thesecond shell 12 of thehousing 10 may further have two openings O, which are respectively communicated with opposite ends of theaccommodating space 121 , for allowing theheadband 81 and theheadband 82 to pass through theaccommodating space 121 respectively.

进一步来看，在本实施例中，头带81可以但不限于是一体成型的带状或条状结构，且可包括彼此相连的一齿条部811以及一带部812，齿条部811的宽度小于带部812，是为头带81上用于啮合于头带调整机构1的部分，而带部812的宽度较宽，适于裸露于头带调整机构1之外，以用于贴附于头部并确保穿戴舒适度。头带82的结构可实质上相同或相似于头带81，如图所示，头带82可以但不限于是一体成型的带状或条状结构，且可包括彼此相连的一齿条部821以及一带部822，齿条部821的宽度小于带部822，是为头带82上用于啮合于头带调整机构1的部分，而带部822的宽度较宽，适于裸露于头带调整机构1之外，以用于贴附于头部并确保穿戴舒适度。头带81的带部812与头带82的带部822可分别穿设于外壳10的开口O，以令齿条部811与齿条部821进入容置空间121而啮合于头带调整机构1的致动件30，从而可受致动件30的作用而相对头带调整机构1活动。Looking further, in this embodiment, theheadband 81 may be, but is not limited to, an integrally formed belt-like or strip-like structure, and may include arack portion 811 and abelt portion 812 that are connected to each other, and the width of therack portion 811 Smaller than thestrap portion 812, it is the part of theheadband 81 that is used to engage with theheadband adjustment mechanism 1, while thestrap portion 812 has a wider width and is suitable for being exposed outside theheadband adjustment mechanism 1 for attaching to theheadband adjustment mechanism 1. head and ensure wearing comfort. The structure of theheadband 82 may be substantially the same as or similar to theheadband 81. As shown in the figures, theheadband 82 may be, but is not limited to, an integrally formed belt or strip structure, and may include arack portion 821 connected to each other. And thebelt portion 822, the width of therack portion 821 is smaller than that of thebelt portion 822, which is the part of theheadband 82 for engaging with theheadband adjustment mechanism 1, and the width of thebelt portion 822 is wider, suitable for being exposed to the headband adjustment. Outside themechanism 1, it is used to attach to the head and ensure wearing comfort. Thestrap portion 812 of theheadband 81 and thestrap portion 822 of theheadband 82 can be respectively passed through the opening O of thehousing 10 , so that therack portion 811 and therack portion 821 enter theaccommodating space 121 and engage with theheadband adjustment mechanism 1 . The actuatingmember 30 can be acted on by the actuatingmember 30 to move relative to theheadband adjustment mechanism 1 .

进一步来说，使用者可藉由往特定方向旋转调整旋钮20的方式致动致动件30，以令头带81与头带82相对头带调整机构1往特定方向活动而逐渐减少或增加头带81与头带82裸露于外的长度，即调整头带81与头带82的松紧度以适应于所需的头围尺寸。Further, the user can actuate theactuator 30 by rotating theadjustment knob 20 in a specific direction, so that theheadband 81 and theheadband 82 move in a specific direction relative to theheadband adjustment mechanism 1 to gradually decrease or increase the headband The exposed length of thestrap 81 and thehead strap 82 is to adjust the tightness of thehead strap 81 and thehead strap 82 to suit the required head circumference.

为此，在本实施例中，外壳10的第二壳件12可突设有一轴柱122，位于容置空间121内且沿一转轴AX向内延伸突出，调整旋钮20可转动地套设于轴柱122，从而可绕着转轴AX相对外壳10转动。此外，调整旋钮20朝向第二壳件12的表面可具有一容置槽S，可用于容置至少部分的致动件30与止挡件40，并且，调整旋钮20还可具有至少一组装柱21以及至少一抵接柱22，突设于调整旋钮20朝向第二壳件12的表面并位于容置槽S内，以用于连动致动件30。To this end, in the present embodiment, thesecond shell 12 of thehousing 10 may be protruded with ashaft column 122, which is located in theaccommodating space 121 and extends inwardly along a rotation axis AX, and theadjustment knob 20 is rotatably sleeved on the Theshaft column 122 can rotate relative to thehousing 10 around the rotation axis AX. In addition, the surface of theadjustment knob 20 facing thesecond housing member 12 may have an accommodating slot S, which may be used to accommodate at least part of theactuator 30 and thestopper 40 , and theadjustment knob 20 may further have at least oneassembly post 21 and at least one abuttingpost 22 are protruded from the surface of the adjustingknob 20 facing thesecond shell 12 and located in the accommodating slot S for interlocking the actuatingmember 30 .

相应于此，在本实施例中，致动件30可转动地套设于轴柱122并至少部分地位于调整旋钮20的容置槽S中，从而介于调整旋钮20与第二壳件12之间。致动件30可以但不限于以任何合适的材质所一体成型的结构，且可具有至少一弹性棘爪(pawl)31、一齿轮部32以及至少一组装孔33，齿轮部32可以但不限于是任何合适的正齿轮，其可转动地套设于轴柱122并啮合于头带81的齿条部811与头带82的齿条部821之间。Correspondingly, in this embodiment, the actuatingmember 30 is rotatably sleeved on theshaft column 122 and is at least partially located in the accommodating groove S of the adjustingknob 20 , so as to be between the adjustingknob 20 and thesecond casing 12 between. The actuatingmember 30 can be, but is not limited to, a structure integrally formed with any suitable material, and can have at least oneelastic pawl 31 , agear portion 32 and at least oneassembly hole 33 , and thegear portion 32 can be but not limited to It is any suitable spur gear, which is rotatably sleeved on theshaft column 122 and meshed between therack portion 811 of theheadband 81 and therack portion 821 of theheadband 82 .

在此，请对应图2再进一步参阅图5～6，显示头带调整机构1的齿轮部32与头带81以及头带82在不同视角的啮合示意图，齿轮部32以与头带81的齿条部811以及头带82的齿条部821在转轴AX的方向上相重叠的方式啮合，或者说，齿条部811与齿条部821的齿是自头带81与头带82的朝向调整旋钮20的容置槽S的表面突出，使得齿轮部32可以叠设于齿条部811与齿条部821的方式与其齿啮合。藉此，齿条部811与齿条部821的宽度W1可设计的较窄。并且，齿轮部32同时与宽度窄的齿条部811及齿条部821重叠配置，与之对应的带部812与带部822的宽度W2可至少减缩至一个较小的尺寸，有助于使头带81与头带82的整体宽度维持于一个相对较窄的程度。Here, please refer to FIGS. 5 to 6 further corresponding to FIG. 2 , which show the meshing schematic diagrams of thegear part 32 of theheadband adjustment mechanism 1 and theheadband 81 and theheadband 82 from different viewing angles. Therack portion 811 and therack portion 821 of theheadband 82 are meshed so as to overlap in the direction of the rotation axis AX. The surface of the accommodating slot S of theknob 20 protrudes so that thegear portion 32 can be overlapped with therack portion 811 and therack portion 821 to engage with the teeth thereof. Therefore, the width W1 of therack portion 811 and therack portion 821 can be designed to be narrower. In addition, thegear portion 32 is arranged to overlap with thenarrow rack portion 811 and therack portion 821 at the same time, and the width W2 of thecorresponding belt portion 812 and thebelt portion 822 can be reduced to at least a smaller size, which is helpful for making the The overall width of theheadband 81 and theheadband 82 is kept relatively narrow.

接着，请再参阅图2～4，在本实施例中，致动件30的弹性棘爪31可摆动地衔接于齿轮部32的相异侧并往相异的方向向外延伸，因而可在受外力驱使时产生形变而相对齿轮部32摆动。致动件30的组装孔33可位于齿轮部32的相异侧，且可以但不限于是圆心落于转轴AX的弧形孔。调整旋钮20的组装柱21分别可滑移地位于组装孔33中，而调整旋钮20的抵接柱22则可活动地位于弹性棘爪31的外侧，以随着调整旋钮20往特定方向转动时挤压弹性棘爪31，从而驱使弹性棘爪31往转轴AX的方向弯曲(如后续图7所示)。弹性棘爪31的外侧是指弹性棘爪31相对远离转轴AX的一侧。Next, referring to FIGS. 2-4, in this embodiment, theelastic pawls 31 of the actuatingmember 30 are swingably connected to different sides of thegear portion 32 and extend outward in different directions. When driven by an external force, it deforms and swings relative to thegear portion 32 . The assembly holes 33 of the actuatingmember 30 may be located on different sides of thegear portion 32 , and may be, but not limited to, arc-shaped holes with the center of the circle falling on the rotation axis AX. The assembling posts 21 of the adjustingknob 20 are respectively slidably located in the assembling holes 33 , while the abuttingposts 22 of the adjustingknob 20 are movably located outside theelastic pawls 31 , so that when the adjustingknob 20 rotates in a specific direction Theelastic pawl 31 is squeezed, so as to drive theelastic pawl 31 to bend in the direction of the rotation axis AX (as shown in the subsequent FIG. 7 ). The outer side of theelastic pawl 31 refers to the side of theelastic pawl 31 that is relatively far away from the rotation axis AX.

另外，在本实施例中，止挡件40套设于致动件30上并至少部分地位于调整旋钮20的容置槽S中，并且，止挡件40可以任何合适的方式固定于外壳10的第二壳件12而介于调整旋钮20与第二壳件12之间。具体来说，在本实施例中，止挡件40可以但不限于以任何合适的材质所一体成型的结构，可具有一内棘轮(ratchet)41以及一穿孔42，内棘轮41可包括以转轴AX为圆心排列成一圈的多个单向棘齿，可在致动件30的弹性棘爪31未受调整旋钮20的抵接柱22挤压时与弹性棘爪31相卡合，从而经由止挡弹性棘爪31而阻止致动件30往特定方向的转动，换句话说，弹性棘爪31可分离地卡合于内棘轮41，以在特定方向转动时受阻于内棘轮41而被维持于当下位置。穿孔42对应于转轴AX，可用以供致动件30的齿轮部32穿设，以使齿轮部32能穿过止挡件40而啮合头带81的齿条部811与头带82的齿条部821。此外，在本实施例中，头带调整机构1还可包括一垫片50，可固定于止挡件40上并夹设于致动件30与止挡件40之间，其可由任何合适的材质所构成，以适度降低致动件30转动时与止挡件40之间的摩擦力，但垫片50为选用而非用于限制本实用新型。In addition, in this embodiment, thestopper 40 is sleeved on the actuatingmember 30 and is at least partially located in the accommodating groove S of theadjustment knob 20 , and thestopper 40 can be fixed to thehousing 10 in any suitable manner. Thesecond shell 12 is interposed between theadjustment knob 20 and thesecond shell 12 . Specifically, in this embodiment, thestopper 40 can be, but is not limited to, a structure integrally formed with any suitable material, and can have aninner ratchet 41 and a throughhole 42 , and theinner ratchet 41 can include a rotating shaft. AX is a plurality of one-way ratchet teeth arranged in a circle at the center of the circle, which can be engaged with theelastic pawl 31 when theelastic pawl 31 of theactuator 30 is not pressed by the abuttingcolumn 22 of theadjustment knob 20, so as to pass through the stopper. Theelastic pawl 31 is blocked to prevent the actuator 30 from rotating in a specific direction. In other words, theelastic pawl 31 is detachably engaged with theinner ratchet 41 to be blocked by theinner ratchet 41 when rotating in a specific direction. current position. The throughhole 42 corresponds to the rotation axis AX, and can be used for thegear portion 32 of theactuator 30 to pass through, so that thegear portion 32 can pass through thestopper 40 and engage therack portion 811 of theheadband 81 and the rack of theheadband 82Section 821. In addition, in this embodiment, theheadband adjustment mechanism 1 may further include awasher 50, which may be fixed on thestopper 40 and sandwiched between the actuatingmember 30 and thestopper 40, which may be any suitable It is made of material to moderately reduce the frictional force between the actuatingmember 30 and thestop member 40 when rotating, but thegasket 50 is selected rather than limited to the present invention.

接着，请接着继续图4～6一并再参阅图7，以藉由头带调整机构1的操作说明使前述内容更为清楚。为了调整头带81与头带82裸露于外的长度以使其符合头围大小，例如当使用者欲调松或放松头带81与头带82，可藉由往特定方向转动调整旋钮20的方式来实现(如图示的箭头A1所示方向)，藉此，调整旋钮20的组装柱21可往致动件30的组装孔33的另一端滑移，同时，调整旋钮20的抵接柱22将随着调整旋钮20的转动推挤致动件30的弹性棘爪31，以使弹性棘爪31往转轴AX的方向挤压变形而脱离止挡件40的内棘轮41。也就是说，此时致动件30不受到止挡件40的限制，而可受到调整旋钮20的组装柱21及抵接柱22的推动往相同方向(如图示的箭头A1所示方向)转动。并且，致动件30的齿轮部32也将一并受到调整旋钮20的驱驶往箭头A1所示方向转动，从而可将与之啮合的齿条部811与齿条部821往相对远离的方向驱动(如箭头B1与箭头B2所示方向)，使得头带81的带部812与头带82的带部822往头带调整机构1的外壳10外部伸出更多，达到增加头带81与头带82裸露于外的长度而放松头带81与头带82的目的。Next, please continue with FIGS. 4 to 6 and refer to FIG. 7 again, so as to make the foregoing content more clear through the operation description of theheadband adjustment mechanism 1 . In order to adjust the exposed length of theheadband 81 and theheadband 82 to make it fit the size of the head circumference, for example, when the user wants to loosen or loosen theheadband 81 and theheadband 82, he can turn theadjustment knob 20 in a specific direction (as shown by the arrow A1 in the figure), whereby theassembly column 21 of theadjustment knob 20 can slide to the other end of theassembly hole 33 of theactuator 30, and at the same time, the abutment column of theadjustment knob 20 22 will push theelastic pawl 31 of theactuator 30 along with the rotation of theadjustment knob 20 , so that theelastic pawl 31 is squeezed and deformed in the direction of the rotation axis AX and disengaged from theinner ratchet 41 of thestopper 40 . That is to say, at this time, the actuatingmember 30 is not restricted by thestopper 40, but can be pushed in the same direction (as shown by the arrow A1 in the figure) by the assemblingcolumn 21 and the abuttingcolumn 22 of the adjustingknob 20. turn. In addition, thegear portion 32 of theactuator 30 will also be driven by the adjustingknob 20 to rotate in the direction indicated by the arrow A1, so that therack portion 811 and therack portion 821 meshed with thegear portion 811 and therack portion 821 can be moved away from each other. Drive (as indicated by arrows B1 and B2), so that thebelt portion 812 of theheadband 81 and thebelt portion 822 of theheadband 82 protrude more toward the outside of thehousing 10 of theheadband adjustment mechanism 1, so that theheadband 81 and the Theheadband 82 is exposed to the outside for the purpose of loosening theheadband 81 and theheadband 82 .

当头带81与头带82调整至所需的长度时，使用者可松开调整旋钮20或略为回转调整旋钮20，使得调整旋钮20的抵接柱22脱离致动件30的弹性棘爪31，届时，弹性棘爪31自动弹性复位而回到卡合止挡件40的内棘轮41的状态，且调整旋钮20的组装柱21实质上仍位于致动件30的组装孔33的其中一端处。藉此，若头带81与头带82在穿戴或其他原因受到向外拉动的拉力时，由于内棘轮41已经由止挡弹性棘爪31止挡住致动件30，因此头带81与头带82无法驱使致动件30往箭头A1的方向转动，也因而无法往箭头B1与B2的方向移动，也就是说，藉由止挡件40对致动件30的限制，可有效防止头带81与头带82调整定位后非预期地松脱。并且，由于调整旋钮20的组装柱21位于致动件30的组装孔33的其中一端处，因此，头带81与头带82在穿戴或其他原因受到使彼此相向活动的外力时，组装柱21可经由止挡组装孔33的一端以阻止致动件30往相反于箭头A1所示的方向的转动，也就是说，藉由组装柱21对致动件30的限制，可有效防止头带81与头带82调整定位后非预期地往收紧的方向移动。由此可知，除非操作调整旋钮20，否则致动件30将不会受到齿条部811与齿条部821的影响而脱离当下的位置，以确保头带81与头带82的松紧调整定位后不会非预期移动的效果。When theheadband 81 and theheadband 82 are adjusted to the desired lengths, the user can loosen theadjustment knob 20 or turn theadjustment knob 20 slightly, so that theabutment post 22 of theadjustment knob 20 is disengaged from theelastic pawl 31 of theactuator 30 , At that time, theelastic pawl 31 is automatically elastically reset and returns to the state of engaging with theinner ratchet 41 of thestopper 40 , and the assemblingcolumn 21 of the adjustingknob 20 is still substantially located at one end of the assemblinghole 33 of theactuator 30 . Thereby, if theheadband 81 and theheadband 82 are pulled outward during wearing or other reasons, since theinner ratchet 41 has stopped the actuatingmember 30 by the stoppingelastic pawl 31, theheadband 81 and theheadband 82 cannot drive theactuator 30 to rotate in the direction of arrow A1, and therefore cannot move in the directions of arrows B1 and B2, that is to say, the restriction of theactuator 30 by thestopper 40 can effectively prevent theheadband 81 Unexpectedly disengaged after adjustment withheadgear 82. Moreover, since the assemblingcolumn 21 of theadjustment knob 20 is located at one end of the assemblinghole 33 of the actuatingmember 30 , when theheadband 81 and theheadband 82 are subjected to an external force to move towards each other during wearing or other reasons, the assemblingcolumn 21 One end of theassembly hole 33 can be blocked to prevent the actuator 30 from rotating in the direction opposite to the direction indicated by the arrow A1, that is, the restriction of theactuator 30 by theassembly column 21 can effectively prevent theheadband 81 Unexpected movement in the tightening direction after adjusting the positioning with theheadband 82 . It can be seen from this that unless theadjustment knob 20 is operated, the actuatingmember 30 will not be affected by therack portion 811 and therack portion 821 and will be separated from the current position, so as to ensure that theheadband 81 and theheadband 82 are adjusted and positioned. No unexpected movement effects.

另一方面，当欲缩短头带81与头带82裸露于外的长度时(或者说，欲收紧头带81与头带82时)，使用者只需要将调整旋钮20往相反于前述箭头A1的方向转动即可实现，可理解地是，调整旋钮20的组装柱21将往致动件30的组装孔33的一端推抵，从而一并使致动件30往相同方向转动，此时，内棘轮41的单向棘齿的走向设计允许致动件30的弹性棘爪31在其上滑动，因此致动件30在此方向的转动不会受到内棘轮41止挡，在此情况下，致动件30的齿轮部32则可受到调整旋钮20的驱使也一并往相反于前述箭头A1的方向转动，从而使得头带81的带部812与头带82的带部822往头带调整机构1的外壳10内部收纳，达到减少头带81与头带82裸露于外的长度而收紧头带81与头带82的目的。On the other hand, when the exposed length of theheadband 81 and theheadband 82 is to be shortened (or in other words, when theheadband 81 and theheadband 82 are to be tightened), the user only needs to turn theadjustment knob 20 in the opposite direction to the aforementioned arrow. The rotation in the direction of A1 can be achieved. It is understandable that theassembly column 21 of theadjustment knob 20 will push the end of theassembly hole 33 of the actuatingmember 30, so that the actuatingmember 30 will rotate in the same direction at the same time. , the direction design of the one-way ratchet teeth of theinner ratchet 41 allows theelastic pawl 31 of theactuator 30 to slide on it, so the rotation of theactuator 30 in this direction will not be blocked by theinner ratchet 41, in this case , thegear portion 32 of the actuatingmember 30 can be driven by theadjustment knob 20 and also rotate in the opposite direction of the aforementioned arrow A1, so that thebelt portion 812 of theheadband 81 and thebelt portion 822 of theheadband 82 move toward the headband Thehousing 10 of theadjustment mechanism 1 is accommodated inside, so as to reduce the exposed length of theheadband 81 and theheadband 82 and tighten theheadband 81 and theheadband 82 .

据此可知，藉由调整旋钮20、致动件30、止挡件40的搭配，使用者可藉由顺时针或逆时针转动调整旋钮20的方式来收紧和放松头带81与头带82的目的，但同时又可避免头带81与头带82在没有操作调整旋钮20时非预期地移动。From this, it can be seen that with the matching of theadjustment knob 20 , the actuatingmember 30 and thestopper 40 , the user can tighten and loosen theheadband 81 and theheadband 82 by rotating theadjustment knob 20 clockwise or counterclockwise. However, at the same time, theheadband 81 and theheadband 82 can be prevented from moving unexpectedly when theadjustment knob 20 is not operated.

并且，由于致动件30与止挡件40可均容置于调整旋钮20的容置槽S，换句话说，头带调整机构1内用于致动头带81与头带82与防止头带81与头带82非预期移动的构件可藏于调整旋钮20内部，从而有助于降低头带调整机构1的整体厚度。Moreover, since theactuator 30 and thestopper 40 can both be accommodated in the accommodating slot S of theadjustment knob 20, in other words, theheadband adjustment mechanism 1 is used to actuate theheadband 81 and theheadband 82 and prevent the headband The unintended movement of thestraps 81 and theheadband 82 can be hidden inside theadjustment knob 20 , thereby helping to reduce the overall thickness of theheadband adjustment mechanism 1 .

同时，致动件30的齿轮部32可以叠设于齿条部811与齿条部821朝向调整旋钮20的容置槽S的表面的方式与其之啮合，因此齿条部811与齿条部821的宽度W1可设计的较窄，以使得分别与齿条部811以及齿条部821相连的带部812与带部822的宽度W2可至少减缩至一个较小的尺寸，从而有助于让头带81与头带82的整体宽度维持于一个相对较窄的程度，进而有助于使装置整体更轻量化。At the same time, thegear portion 32 of the actuatingmember 30 can be overlapped with therack portion 811 and therack portion 821 to mesh with the surfaces of therack portion 811 and therack portion 821 facing the accommodating slot S of theadjustment knob 20 . Therefore, therack portion 811 and therack portion 821 The width W1 can be designed to be narrower, so that the widths W2 of thebelt portion 812 and thebelt portion 822 respectively connected to therack portion 811 and therack portion 821 can be reduced to at least a smaller size, thereby helping the head The overall width of thestrap 81 and thehead strap 82 is maintained at a relatively narrow level, thereby helping to make the overall weight of the device lighter.

相较于传统头带调整旋钮外置在壳体之外的设计来说，本实施例的调整旋钮20至少部分容置于外壳10，有助于维持整体外观的一体性，且由于致动件30与止挡件40藏于调整旋钮20内，因而可在薄化头带调整机构1整体厚度的同时让调整旋钮20裸露于外的部分具有一定程度的宽度，以便于使用者操作。Compared with the traditional design in which the adjustment knob of the headband is externally placed outside the casing, theadjustment knob 20 of the present embodiment is at least partially accommodated in thehousing 10, which helps to maintain the integrity of the overall appearance, and because the actuatingmember 30 and thestopper 40 are hidden in theadjustment knob 20 , so the exposed part of theadjustment knob 20 can have a certain width while thinning the overall thickness of theheadband adjustment mechanism 1 , which is convenient for the user to operate.

以上仅是本实用新型其中一实施例，但本实用新型并非以此为限。例如请参阅图8～11，图8显示本实用新型的另一实施例的头带调整机构1'的分解示意图，图9显示头带调整机构1'的调整旋钮20'、致动件30'与止挡件40'的分解示意图，图10显示头带调整机构1'的局部放大俯视示意图，而图11显示头带调整机构1'的局部放大侧剖示意图。需先说明的是，为达简要说明的目的，在此仅说明本实施例与前述实施例的差异部分，相似或相同的内容可经由参酌前述相应内容获得理解，且相同标号可用以表示相同元件或结构。The above is only one embodiment of the present invention, but the present invention is not limited thereto. For example, please refer to FIGS. 8-11 . FIG. 8 shows an exploded schematic view of aheadband adjustment mechanism 1 ′ according to another embodiment of the present invention, and FIG. 9 shows anadjustment knob 20 ′ and an actuatingmember 30 ′ of theheadband adjustment mechanism 1 ′. The exploded schematic view of thestopper 40 ′, FIG. 10 shows a partially enlarged top view of theheadband adjustment mechanism 1 ′, and FIG. 11 shows a partially enlarged side sectional schematic view of theheadband adjustment mechanism 1 ′. It should be noted that, for the purpose of brief description, only the differences between this embodiment and the previous embodiments are described here. Similar or identical contents can be understood by referring to the aforementioned corresponding contents, and the same reference numerals can be used to represent the same elements or structure.

在本实施例中，头带调整机构1'可包括的致动件30'可一体成形于调整旋钮20'上，致动件30'可包括一第一齿轮部35以及一第二齿轮部36，可沿转轴AX依序叠设于调整旋钮20'朝向第二壳件12的一侧，如图所示，第二齿轮部36可经由第一齿轮部35连接于调整旋钮20'。第二齿轮部36可相同或相似于前述实施例的齿轮部32，为致动件30'上用于啮合头带81的齿条部811与头带82的齿条部821的部分。第一齿轮部35则用于与止挡件40'配合，以达到定位与止挡头带81与头带82活动的目的。In this embodiment, the actuatingmember 30 ′ that can be included in theheadband adjusting mechanism 1 ′ can be integrally formed on the adjustingknob 20 ′, and the actuatingmember 30 ′ can include afirst gear portion 35 and asecond gear portion 36 , can be stacked on the side of theadjustment knob 20 ′ facing thesecond shell 12 along the rotation axis AX in sequence. As shown in the figure, thesecond gear portion 36 can be connected to theadjustment knob 20 ′ via thefirst gear portion 35 . Thesecond gear portion 36 may be the same as or similar to thegear portion 32 of the previous embodiment, and is a portion of the actuatingmember 30 ′ for engaging therack portion 811 of theheadband 81 and therack portion 821 of theheadband 82 . Thefirst gear portion 35 is used to cooperate with thestopper 40 ′, so as to achieve the purpose of positioning and stopping the movement of theheadband 81 and theheadband 82 .

详细来说，在本实施例中，致动件30'的第一齿轮部35可以但不限于是任何合适的正齿轮，止挡件40'可包括至少一弹片43，可用于卡合于第一齿轮部35的齿槽。藉此，在未操作调整旋钮20'时，致动件30'可经由第一齿轮部35卡合止挡件40'的弹片43而固定于当下位置，从而可经由第二齿轮部36将头带81与头带82固定于当下的松紧度。但当欲调松或调紧头带81与头带82时，只需要顺时针或逆时针适度施力转动调整旋钮20'即可，在此过程中，调整旋钮20'可经由旋转致动件30'的第一齿轮部35以驱使止挡件40'的弹片43弯曲变形而退出第一齿轮部35的齿槽，藉此，致动件30'得以随着调整旋钮20'往所需的方向转动，从而令其第二齿轮部36往所需方向驱动头带81与头带82。据此可知，藉由调整旋钮20'、致动件30'、止挡件40'的搭配，使用者同样可藉由顺时针或逆时针转动调整旋钮20'的方式来达到收紧和放松头带81与头带82的目的，且同时又可避免头带81与头带82在没有操作调整旋钮20'时非预期地活动。In detail, in this embodiment, thefirst gear portion 35 of the actuatingmember 30 ′ can be, but not limited to, any suitable spur gear, and thestopper 40 ′ can include at least oneelastic piece 43 , which can be used for engaging with thefirst gear portion 43 . A tooth slot of thegear portion 35 . In this way, when the adjustingknob 20 ′ is not operated, the actuatingmember 30 ′ can engage with theelastic piece 43 of thestopper 40 ′ via thefirst gear portion 35 to be fixed in the lower position, so that the head can be moved through thesecond gear portion 36 Thestrap 81 and thehead strap 82 are fixed to the current tightness. However, when you want to loosen or tighten theheadband 81 and theheadband 82, you only need to rotate the adjustment knob 20' with moderate force clockwise or counterclockwise. During this process, the adjustment knob 20' can be rotated through the actuator Thefirst gear portion 35 of the 30' drives theelastic piece 43 of the stopper 40' to bend and deform to exit the tooth slot of thefirst gear portion 35, whereby the actuating member 30' can follow the adjustment knob 20' to the desired direction. Thesecond gear portion 36 drives theheadband 81 and theheadband 82 in the desired direction. From this, it can be seen that with the combination of the adjustment knob 20', the actuating member 30', and the stopper 40', the user can also tighten and loosen the head by rotating the adjustment knob 20' clockwise or counterclockwise. The purpose of thestrap 81 and thehead strap 82, and at the same time, can avoid the unintended movement of thehead strap 81 and thehead strap 82 when the adjustment knob 20' is not operated.

综上所述，根据本实用新型实施例所公开的头带调整机构，由于其用于啮合驱动头带的致动件以及用于止挡定位致动件的止挡件可均容置于调整旋钮的容置槽而藏于调整旋钮内部，从而有助于降低头带调整机构的整体厚度，藉此，有助于使应用此头带调整机构的电子装置的整体尺寸轻量化，达到提供轻盈与舒适的穿戴体验及降低长时间使用的负担与不适感等效果。To sum up, according to the headband adjustment mechanism disclosed in the embodiments of the present invention, the actuator for engaging and driving the headband and the stopper for stopping the positioning actuator can both be accommodated in the adjustment mechanism. The accommodating groove of the knob is hidden inside the adjustment knob, thereby helping to reduce the overall thickness of the headband adjustment mechanism, thereby helping to reduce the overall size of the electronic device to which the headband adjustment mechanism is applied, so as to provide lightness And comfortable wearing experience and reduce the burden and discomfort of long-term use.

虽然本实用新型以前述的实施例公开如上，然而其并非用以限定本实用新型。本领域的技术人员，在不脱离本实用新型的精神和范围的情况下，所作的更动与润饰，均属本实用新型的专利保护范围。关于本实用新型所界定的保护范围请参考所附的权利要求书的范围。Although the present invention is disclosed in the foregoing embodiments, it is not intended to limit the present invention. Changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention. Regarding the protection scope defined by the present invention, please refer to the scope of the appended claims.

Claims (20)

1. A headband adjustment mechanism adapted to adjust at least two headband comprising:

the shell is suitable for the at least two head belts to penetrate through; and

and the adjusting knob is rotatably arranged on the shell and at least partially accommodated in the shell, wherein the adjusting knob is used for tightening and loosening the at least two head bands.

2. The headband adjustment mechanism according to claim 1, further comprising an actuating member and a stop member, wherein the adjustment knob has a receiving slot, the actuating member is at least partially received in the receiving slot and is coupled to rotate relative to the housing and to engage and actuate the at least two headband straps, and the stop member is sleeved on the actuating member and is at least partially received in the receiving slot for releasably engaging with the actuating member to prevent the actuating member from rotating under the influence of the at least two headband straps.

3. The headband adjustment mechanism of claim 2 wherein the actuating member and the stop member are stacked along an axis of rotation of the adjustment knob.

4. The headband adjusting mechanism according to claim 2 wherein the actuator comprises a gear portion adapted to overlap and engage the rack portion of the at least two headband straps toward a side of the receiving slot of the adjustment knob.

5. The headband adjusting mechanism according to claim 2, wherein the adjusting knob further comprises at least one assembling post and at least one abutting post, the at least one assembling post and the at least one abutting post are located in the receiving groove, the actuating member comprises at least one elastic pawl and at least one assembling hole, the stop member comprises an inner ratchet, the at least one assembling post is slidably located in the at least one assembling hole, the at least one abutting post is movably located outside the at least one elastic pawl, the at least one elastic pawl is detachably engaged with the inner ratchet, when the adjusting knob rotates in a specific direction, the at least one abutting post presses and deforms the at least one elastic pawl to disengage the at least one elastic pawl from the inner ratchet, and the at least one assembling post slides to an end of the at least one assembling hole to drive the actuating member to rotate in the specific direction.

6. The headband adjustment mechanism of claim 5 wherein the at least one assembly hole is an arc hole centered on a rotation axis of the adjustment knob.

7. The headband adjustment mechanism of claim 5 wherein the inner ratchet comprises a plurality of one-way ratchet teeth arranged in a circle about a rotational axis of the adjustment knob.

8. The headband adjustment mechanism of claim 2 wherein the actuator is integrally formed on the adjustment knob.

9. The headband adjustment mechanism of claim 8 wherein the actuator comprises a first gear portion and a second gear portion, the first gear portion and the second gear portion being sequentially stacked along an axis of rotation of the adjustment knob, the stop member being adapted to releasably engage the first gear portion, the second gear portion being adapted to engage and actuate the at least two headband straps.

10. The headgear adjustment mechanism of claim 9, wherein the stop member comprises at least one resilient tab releasably engageable with the first gear portion.

11. An electronic device, comprising:

at least two head straps; and

a headgear adjustment mechanism, the headgear adjustment mechanism comprising:

the shell is suitable for the at least two head belts to penetrate through; and

and the adjusting knob is rotatably arranged on the shell and at least partially accommodated in the shell, wherein the adjusting knob is used for tightening and loosening the at least two head bands.

12. The electronic device as claimed in claim 11, wherein the headband adjusting mechanism further comprises an actuating member and a stop member, the adjusting knob has a receiving slot, the actuating member is at least partially received in the receiving slot and is linked by the adjusting knob to rotate relative to the housing and engage and actuate the at least two headband straps, the stop member is sleeved on the actuating member and is at least partially received in the receiving slot for releasably engaging with the actuating member to prevent the actuating member from rotating under the influence of the at least two headband straps.

13. The electronic device of claim 12, wherein the actuating member and the stop member are stacked along an axis of rotation of the adjustment knob.

14. The electronic device of claim 12, wherein the actuator comprises a gear portion, the at least two head straps each have a rack portion, the gear portion is stacked on a side of the rack portions of the at least two head straps facing the accommodating groove of the adjustment knob and engages with the rack portions of the at least two head straps.

15. The electronic device of claim 12, wherein the adjusting knob further comprises at least one assembling post and at least one abutting post, the at least one assembling post and the at least one abutting post are located in the receiving cavity, the actuating member comprises at least one resilient pawl and at least one assembling hole, the stop member comprises an inner ratchet, the at least one assembling post is slidably located in the at least one assembling hole, the at least one abutting post is movably located outside the at least one resilient pawl, the at least one resilient pawl is detachably engaged with the inner ratchet, when the adjusting knob is rotated in a specific direction, the at least one abutting post presses and deforms the at least one resilient pawl to disengage the at least one resilient pawl from the inner ratchet, and the at least one assembling post slides to an end of the at least one assembling hole to drive the actuating member to rotate in the specific direction.

16. The electronic device of claim 15, wherein the at least one assembling hole is an arc-shaped hole with a center located on a rotation axis of the adjusting knob.

17. The electronic device of claim 15, wherein the inner ratchet comprises a plurality of one-way ratchets arranged in a circle around a rotation axis of the adjustment knob.

18. The electronic device of claim 12, wherein the actuator is integrally formed on the adjustment knob.

19. The electronic device of claim 18, wherein the actuator comprises a first gear portion and a second gear portion, the first gear portion and the second gear portion are sequentially stacked along an axis of the adjustment knob, the stop member is configured to releasably engage with the first gear portion, and the second gear portion is configured to engage with and actuate the at least two headband.

20. The electronic device of claim 19, wherein the stopper comprises at least one elastic piece releasably engaged with the first gear portion.

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