CN101843467A - Movable base of cleaner - Google Patents

Abstract

The invention relates to a movable base of a cleaner, which comprises a base; a motor, which is arranged in the motor chamber of the base and can selectively drive the transmission shaft to rotate forwards and backwards; a main wheel co-rotatably fixed to a drive shaft of the motor; a clutch assembly connected to the main wheel; a shaft member, one end of which is connected to the clutch assembly, and the shaft member is selectively driven by the main wheel to rotate when the transmission shaft rotates forwards and is disengaged from the main wheel when the transmission shaft rotates backwards by the action of the clutch assembly; a secondary wheel co-rotatably fixed to the shaft member; the invention can change the traveling direction of the cleaner only by driving one motor, so that the problem that two motors are required to control the cleaner to turn in the prior art can be solved, and the invention has the advantages of reducing the cost and saving the space in production.

Description

Translated fromChinese

清洁器的移动底座Cleaner mobile base

【技术领域】【Technical field】

本发明有关一种移动装置，特指一装设于自动化清洁器之底部，具有节省组件成本与组装空间特征的清洁器之移动底座。The invention relates to a mobile device, in particular to a mobile base installed on the bottom of an automatic cleaner, which has the characteristics of saving component cost and assembly space.

【背景技术】【Background technique】

随着自动化科技的蓬勃发展，许多以便利人类生活为诉求之具备自动功能工具不断的被开发而出，自走式清洁器即为一最佳之范例，其为一种可于开启电源后自行于地面行进并且同时进行清洁地面之工作的自动化机械装置。With the vigorous development of automation technology, many tools with automatic functions for the convenience of human life have been continuously developed. The self-propelled cleaner is the best example. An automated mechanical device that travels on the ground and cleans the ground at the same time.

而该清洁器于设计上多半于一底盘上设有两平行且相互间隔之转轮，且分别于各转轮上设置有一控制该转轮前进以及后退动作之驱动马达，以便在清洁器于前进途中碰到障碍物的时候，可透过马达之驱动进而控制左轮逆转同时右轮正转而达到使本体原地逆时针旋转，亦或右轮逆转同时左轮正转而达到使本体原地顺时针旋转，而后得以于原地转向并再行前进脱离该障碍物；The cleaner is mostly designed with two parallel and spaced runners on a chassis, and a drive motor is provided on each runner to control the forward and backward movements of the runner, so that when the cleaner moves forward When an obstacle is encountered on the way, the motor can be used to control the left wheel to reverse and the right wheel to rotate forward to make the body rotate counterclockwise, or the right wheel to reverse and the left wheel to rotate forward to make the body clockwise rotate so that it turns in place and proceeds to clear the obstacle;

然而，现有技术中利用两个马达分别操控一行进轮之正\逆转于清洁器之制程上考虑而言，恐有增加生产成本之虞，且同时于配置上亦有占据过多组装空间之扰。However, in the prior art, two motors are used to separately control the forward/reverse rotation of a row of moving wheels. Considering the manufacturing process of the cleaner, it may increase the production cost, and at the same time, it may occupy too much assembly space in terms of configuration. disturb.

【发明内容】【Content of invention】

为解决上述之现有技术不足之处，本发明目的在提供一种于构造上做出改良的清洁器之移动底座，以精减所使用之驱动马达数为一个。In order to solve the disadvantages of the above-mentioned prior art, the object of the present invention is to provide a mobile base of the cleaner with an improved structure, so as to reduce the number of driving motors used to one.

为达上述之目的，本发明系有关一种清洁器之移动底座，包括有：In order to achieve the above-mentioned purpose, the present invention relates to a mobile base of a cleaner, including:

一底座，其上设有一马达室、一主轮口、一副轮口及一轴固定部；马达室设于底座丨侧处，主轮口为一设于马达室旁之开口，副轮口为一设于主轮口反向侧之开口，轴固定部设于主、副轮口之间，其上设有一长型轴槽与一离合室；A base with a motor room, a main wheel opening, a secondary wheel opening and a shaft fixing part; the motor room is located on the side of the base, the main wheel opening is an opening next to the motor room, and the auxiliary wheel opening It is an opening set on the opposite side of the main wheel mouth, the shaft fixing part is set between the main wheel mouth and the auxiliary wheel mouth, and a long shaft groove and a clutch chamber are arranged on it;

一马达，其设于马达室中，可选择性驱动传动轴正反转；A motor, which is located in the motor room, can selectively drive the transmission shaft forward and reverse;

一主轮，其设于主轮口且共转地固定于马达之传动轴上；A main wheel, which is arranged at the main wheel mouth and co-rotatingly fixed on the drive shaft of the motor;

一离合组件，其对应设于离合室中且连接于主轮；A clutch assembly, which is correspondingly arranged in the clutch chamber and connected to the main wheel;

一轴件，其对应设于轴槽之中，一端连接于离合组件，且轴件藉离合组件之作用选择性地于传动轴正转时受主轮之驱动旋转，而于传动轴反转时脱离主轮之驱动；A shaft, which is correspondingly arranged in the shaft groove, and one end is connected to the clutch assembly, and the shaft is selectively driven by the main wheel when the transmission shaft rotates forward by the function of the clutch assembly, and when the transmission shaft is reversed Driven from the main wheel;

一副轮，其对应设于副轮口处并与主轮平行，且其共转地固定于轴件上；A secondary wheel, which is correspondingly arranged at the mouth of the secondary wheel and parallel to the main wheel, and is co-rotatingly fixed on the shaft;

至少一限位盖，其跨设于离合组件以及轴件之杆身上，且固定于轴固定部之壁面上以定位离合组件与轴件。At least one position-limiting cover straddles the shaft of the clutch assembly and the shaft, and is fixed on the wall of the shaft fixing part to position the clutch assembly and the shaft.

本发明之特征在于可藉马达驱动主轮朝正向旋转，而后透过离合组件之传动进一步地驱动副轮连动地前转，且于清洁器碰到障碍物时，可藉马达驱动主轮逆向旋转，而后因离合组件于主轮逆向旋转时与主轮脱离啮合，因此副轮并不随主轮逆转，如此一来可令清洁器以副轮为中心进行旋转，进而让清洁器行进方向转离障碍物；而由于仅藉一马达作为驱动之动力源，故可改善现有技术中需利用两驱动马达方能解决清洁器转向之问题，对于生产上而言具有降低成本以及节省组装空间之优势。The feature of the present invention is that the motor can be used to drive the main wheel to rotate in the forward direction, and then through the transmission of the clutch assembly to further drive the secondary wheels to rotate forward, and when the cleaner encounters an obstacle, the motor can be used to drive the main wheel Reverse rotation, and then because the clutch assembly disengages from the main wheel when the main wheel rotates in the reverse direction, the auxiliary wheel does not reverse with the main wheel, so that the cleaner can rotate around the auxiliary wheel, and then the direction of travel of the cleaner can be rotated. away from obstacles; and because only one motor is used as the driving power source, it can improve the problem of using two driving motors in the prior art to solve the problem of turning the cleaner, which has the advantages of reducing costs and saving assembly space in terms of production. Advantage.

【附图说明】【Description of drawings】

图1为本发明的外观图。Fig. 1 is the exterior view of the present invention.

图2为本发明的外观分解图。Fig. 2 is an exploded view of the appearance of the present invention.

图3为本发明的局部组件外观分解图。Fig. 3 is an exploded view of the appearance of partial components of the present invention.

图4为本发明的局部组件侧面剖视图。Fig. 4 is a side sectional view of a partial assembly of the present invention.

图5为本发明的前进动作实施例图。Fig. 5 is a diagram of an embodiment of the forward movement of the present invention.

图6为本发明的另一前进动作实施例图。Fig. 6 is a diagram of another forward action embodiment of the present invention.

图7为本发明的转向动作实施例图。Fig. 7 is a diagram of an embodiment of the steering action of the present invention.

图8为本发明的另一转向动作实施例图。Fig. 8 is a diagram of another steering action embodiment of the present invention.

【主要组件符号说明】[Description of main component symbols]

底座10马达室11主轮口12副轮口13轴固定部14Base 10Motor chamber 11 Main wheel opening 12 Secondary wheel opening 13Shaft fixing part 14

轴槽141离合室142限位槽143马达20主轮30Shaft slot 141clutch chamber 142limit slot 143motor 20main wheel 30

轴接部31离合组件40主动件41固定轴411Shaft connection part 31clutch assembly 40 driving element 41 fixed shaft 411

离合齿412从动件42离合齿421套部422Clutchtooth 412Follower 42 Clutch tooth 421 Cover part 422

啮合开口4221轴件50弹性件51啮合块52Engagement opening 4221shaft member 50elastic member 51engagement block 52

限位环突53接部54固定孔541副轮60接孔61Limitingring protrusion 53 Connectingportion 54 Fixinghole 541Secondary wheel 60 Connectinghole 61

固定件62限位盖70Fixingpiece 62limit cover 70

【具体实施方式】【Detailed ways】

为使贵审查员方便简洁了解本发明之创作特征、内容与优点及其所能达成之功效，现将本发明配合附图，并以实施例之表达形式分别详细说明如下：In order for your examiners to easily and concisely understand the creative features, content and advantages of the present invention and the effects it can achieve, the present invention is now described in detail in the form of embodiments in conjunction with the accompanying drawings as follows:

请配合参看图1至图3所示，本发明清洁器之移动底座于一较佳之实施例中可包含有一底座10、一马达20、一主轮30、一离合组件40、一轴件50、一副轮60及两限位盖70。Please refer to Fig. 1 to Fig. 3, the mobile base of the cleaner of the present invention may include abase 10, amotor 20, amain wheel 30, aclutch assembly 40, ashaft 50, A pair ofwheels 60 and two limit covers 70.

前述之底座10可为一环状盘体，其上进一步设有一马达室11、一主轮口12、一副轮口13及一轴固定部14；马达室11设于底座10之一侧处，主轮口12为一贯穿设于马达室11内侧之开口，副轮口13为一设于主轮口12反向侧之开口，轴固定部14为一设于主、副轮口12和13之间的长型架体，其上凹设有一贯通轴固定部14两端之长型轴槽141，且于轴槽141靠近主轮口12端处凹设有一离合室142，并于轴槽141之槽身上横断地凹入设有一限位槽143。Theaforesaid base 10 can be an annular disk body, further provided with amotor chamber 11, amain wheel port 12, asecondary wheel port 13 and ashaft fixing part 14; themotor chamber 11 is located at one side of thebase 10 , themain wheel port 12 is an opening that runs through the inner side of themotor chamber 11, theauxiliary wheel port 13 is an opening that is located on the opposite side of themain wheel port 12, and theshaft fixing part 14 is an opening that is located between the main andauxiliary wheel ports 12 and The elongated frame body between 13 is concavely provided with a long shaft groove 141 passing through the two ends of theshaft fixing part 14, and aclutch chamber 142 is recessed in the shaft groove 141 near the end of themain wheel mouth 12, and on the shaft Alimiting groove 143 is recessed transversely on the groove body of the groove 141 .

前述之马达20固定设于马达室11之中，其可驱动传动轴做正\反转之动作。Theaforementioned motor 20 is fixedly installed in themotor chamber 11, and it can drive the transmission shaft to perform forward/reverse rotation.

前述之主轮30设于主轮口12之中且共转地固定于马达20之传动轴上，可受马达20之驱动而正\反向转动以带动清洁器行进，其于马达20之反向侧的中心处设有一轴接部31，其为一凹设之矩型接孔。The above-mentionedmain wheel 30 is arranged in themain wheel port 12 and fixed on the drive shaft of themotor 20 co-rotatingly, and can be driven by themotor 20 to rotate forward/reversely to drive the cleaner to advance, which is opposite to themotor 20. Ashaft connection portion 31 is provided at the center of the side, which is a recessed rectangular connection hole.

请进一步配合参看图4所示，前述之离合组件40可旋转地对应设于离合室142中，其包含一主动件41及一从动件42；Please refer to FIG. 4 for further cooperation. Theaforementioned clutch assembly 40 is rotatably and correspondingly arranged in theclutch chamber 142, which includes a driving element 41 and a drivenelement 42;

其中主动件41之外侧端设有一固定轴411，其轴端外型对应主轮30之轴接部31并藉此配合套接于主轮30而使主动件41与主轮30呈同轴共转，主动件41内侧端之接触平面上设有复数呈环状分布之离合齿412，离合齿412之设置为一种提供两转向之装置间离合驱动功能所熟知的技术手段，故不于本文中进一步多加赘述其细节，仅就配置上做说明；Wherein the outer end of the driving part 41 is provided with a fixed shaft 411, and the shape of the shaft end corresponds to theshaft connection part 31 of themain wheel 30, and thereby fits in themain wheel 30 so that the driving part 41 and themain wheel 30 are coaxial and coaxial. Turn, the contact plane of the inner side of the active part 41 is provided with a plurality of annularly distributedclutch teeth 412. The arrangement of theclutch teeth 412 is a well-known technical means that provides the clutch drive function between the two steering devices, so it will not be described in this article. The details will be further elaborated, and only the configuration will be explained;

且其中从动件42对应配合于主动件41，其外侧端面上设有对应于主动件41之离合齿412的离合齿421，其选择性地于主轮30及主动件41正转时啮合于主动件41之离合齿412而令从动件42受主动件41之驱动正转，而于主轮30及主动件41逆转时则脱离与主动件41之离合齿412之啮合，并使从动件42脱离主动件41之驱动，且从动件42内侧端突起设有一套部422，套部422开口端处朝内凹入设有复数之长型啮合开口4221。And wherein the drivenmember 42 is correspondingly matched with the driving member 41, and its outer end surface is provided with a clutch tooth 421 corresponding to theclutch tooth 412 of the driving member 41, which selectively meshes with themain wheel 30 and the driving member 41 when they rotate forward. Theclutch teeth 412 of the driving part 41 make the drivenpart 42 rotate positively under the drive of the driving part 41, and when themain wheel 30 and the driving part 41 reverse, it breaks away from the engagement with theclutch teeth 412 of the driving part 41, and the driven part 41 rotates forward. Thepart 42 is separated from the drive of the driving part 41, and the inner end of the drivenpart 42 protrudes to form a set part 422, and the opening end of the cover part 422 is recessed inward to have a plurality of elongated engaging openings 4221.

前述之轴件50为一长杆件，其对应设于轴槽141之中，且一端对应穿设于离合组件40之从动件42的套部422内，且于套部422底壁与轴件50该端间顶靠设有一弹性件51，其可为一弹簧，用以顶推从动件42以保持其与主动件41之连接，且于轴件50该端周围壁面上突伸设有对应于啮合开口4221之啮合块52，其可滑移地穿设于啮合开口4221中并与其相互卡制，进而令轴件50与从动件42成一体共转，而轴件50之杆身上设有一限位环突53，其对应卡制于限位槽143内以提供轴件50一限位功能，再者，轴件50另端上设有一接部54，其具有非圆形断面且于端顶处设有一固定孔541例如：螺孔。Theaforementioned shaft member 50 is a long rod member, which is correspondingly arranged in the shaft groove 141, and one end is correspondingly installed in the sleeve portion 422 of thefollower 42 of theclutch assembly 40, and is connected between the bottom wall of the sleeve portion 422 and the shaft. Anelastic member 51 is provided between the ends of themember 50, which can be a spring, and is used to push the drivenmember 42 to keep it connected with the active member 41, and a protruding device is provided on the wall surface around the end of theshaft member 50. There is anengaging block 52 corresponding to the engaging opening 4221, which is slidably inserted in the engaging opening 4221 and locked with it, so that theshaft 50 and thefollower 42 are integrally rotated together, and the rod of theshaft 50 There is alimiting ring protrusion 53 on the body, which is correspondingly locked in thelimiting groove 143 to provide a limiting function of theshaft member 50. Furthermore, the other end of theshaft member 50 is provided with a connectingportion 54, which has a non-circular cross-section And afixing hole 541 such as a screw hole is provided at the top.

前述之副轮60对应设于副轮口13处并与主轮30相互平行以提供清洁器一行进之功能，且其轮心处贯穿设有一接孔61，其对应啮合地套设固定于接部54上，进而使副轮60与轴件50、从动件42成同轴共转关系，而可于副轮60外侧端以一外加之固定件62例如：螺钉穿设于固定孔541以将副轮60固定于轴件50上。The aforementionedauxiliary wheel 60 is correspondingly arranged at theauxiliary wheel mouth 13 and is parallel to themain wheel 30 to provide the function of the cleaner to travel, and aconnection hole 61 is formed through the center of the wheel, which is sleeved and fixed on the connection in a corresponding meshing manner.part 54, so that theauxiliary wheel 60, theshaft member 50 and the drivenmember 42 are in a coaxial and co-rotating relationship, and anadditional fixing member 62 can be used at the outer end of theauxiliary wheel 60. For example: screws are passed through thefixing hole 541 to Thesecondary wheel 60 is fixed on theshaft member 50 .

前述之限位盖70分别对应跨设于离合组件40以及轴件50之杆身上，且固定于轴固定部14之壁面上以将离合组件40与轴件50定位。The above-mentioned limitingcover 70 straddles the shaft body of theclutch assembly 40 and theshaft member 50 respectively, and is fixed on the wall surface of theshaft fixing portion 14 to position theclutch assembly 40 and theshaft member 50 .

请进一步配合参看图5图6所示，本发明于清洁器要朝前方前进时，可藉马达20驱动主轮30朝正向旋转，而后透过离合组件40之传动进一步地驱动轴件50及副轮60连动地前转，以使两平行之主、副轮30和60同步正转以带动清洁器之前行；Please refer to Fig. 5 and Fig. 6 for further cooperation. When the cleaner is to move forward, themotor 20 can be used to drive themain wheel 30 to rotate in the forward direction, and then theshaft 50 can be further driven through the transmission of theclutch assembly 40. Theauxiliary wheel 60 rotates forward in linkage, so that the two parallel main andauxiliary wheels 30 and 60 rotate forward synchronously to drive the cleaner to move forward;

请进一步配合参看图7图8所示，于清洁器前进中碰到障碍物时，可藉马达20驱动主轮30逆向旋转，而后因离合组件40之啮合齿412和421于主轮30逆向旋转时呈现脱离啮合之状况，因此轴件50与副轮60并不受主轮30驱动而造成副轮60于原地滞留，仅主轮30独自地朝后向移动，如此一来可令清洁器以副轮60为中心进行旋转，进而可让行进方向转离障碍物，复而令主、副轮30和60同步前转以远离障碍物。Please refer to Fig. 7 and Fig. 8 for further cooperation. When the cleaner encounters an obstacle while advancing, themotor 20 can be used to drive themain wheel 30 to rotate in reverse, and then themain wheel 30 will rotate in reverse due to the meshingteeth 412 and 421 of theclutch assembly 40. Therefore, theshaft member 50 and theauxiliary wheel 60 are not driven by themain wheel 30, causing theauxiliary wheel 60 to stay in place, and only themain wheel 30 moves backward independently, so that the cleaner can Thesecondary wheel 60 is rotated as the center, and then the direction of travel can be turned away from the obstacle, and then the main andsecondary wheels 30 and 60 are rotated forward synchronously to keep away from the obstacle.

而本发明-清洁器之移动底座由于仅藉由单一马达30作为驱动之动力源，因此可改善现有技术中必需要透过两个驱动马达方能解决清洁器转向之问题，对于成品之生产上而言，具有降低制作成本以及节省组装空间之优势。And the mobile base of the present invention-cleaner only usessingle motor 30 as the power source for driving, so it can improve the problem that the cleaner must be turned to by two driving motors in the prior art, for the production of finished products In terms of the above, it has the advantages of reducing manufacturing cost and saving assembly space.

再者，为了另本发明于行进间能协助清洁动作更具有方向性之优势，因此本发明于另一种实施方式中，可令主轮30之外径大于副轮60，如此一来，于一般情况下本发明之行进动作为一弧形之动线，于碰撞到阻碍物时因切入角度之故，有助于主轮30之逆转而使整体转向然后倒退的动作。Furthermore, in order to assist the present invention to have a more directional advantage in the cleaning action during travel, so in another embodiment of the present invention, the outer diameter of themain wheel 30 can be made larger than that of theauxiliary wheel 60, so that Generally speaking, the traveling action of the present invention is an arc-shaped moving line, and because of the cutting angle when bumping into an obstacle, it helps the reverse of themain wheel 30 so that the whole turns and then retreats.

综观上述，本发明在突破先前之技术结构下，确实已达到所欲增进之功效，且也非熟悉该项技艺者所易于思及，再者，本发明申请前未曾公开，其所具之进步性、实用性，显已符合创作专利之申请要件，爰依法提出创作申请，恳请贵局核准本件创作专利申请案，以励创作，至感德便。In view of the above, the present invention has indeed achieved the desired effect after breaking through the previous technical structure, and it is not easy for those who are familiar with the art to think about it. Moreover, the present invention has not been disclosed before the application, and the progress it has The nature and practicability clearly meet the application requirements for a creation patent. I submit a creation application in accordance with the law. I sincerely ask your bureau to approve this creation patent application to encourage creation. I am very grateful.

以上所述之实施例仅系为说明本发明之技术思想及特点，其目的在使熟习此项技艺之人士能够了解本发明之内容并据以实施，当不能以之限定本发明之专利范围，即大凡依本发明所揭示之精神所作之均等变化或修饰，仍应涵盖在本发明之专利范围内。The above-described embodiments are only to illustrate the technical ideas and characteristics of the present invention, and its purpose is to enable those skilled in this art to understand the content of the present invention and implement it accordingly, and should not limit the patent scope of the present invention. That is to say, all equivalent changes or modifications made according to the spirit disclosed in the present invention should still be covered by the patent scope of the present invention.

Claims (9)

1. the movable base of a cleaner is characterized in that: include:

One base which is provided with a motor chamber, a main wheel mouth, an accessory whorl mouth and a fixed part, further is provided with an elongated axial trough and a clutch chamber on its axis fixed part;

One motor, it is located in the motor chamber, the rotating of alternative driving power transmission shaft;

One main wheel, it is located at the main wheel mouth and corotation ground is fixed on the power transmission shaft of motor;

One clutch component, its correspondence be located in the clutch chamber and with main wheel and power transmission shaft interlock corotation;

A part, its correspondence is located among the axial trough, and an end is connected in clutch component, and the effect of axle part mat clutch component optionally is subjected to the drivings rotation of main wheel when power transmission shaft just changes, and the driving of disengaging main wheel when power transmission shaft reverses;

One accessory whorl, its correspondence are located at accessory whorl mouth place and parallel with main wheel, and its corotation ground is fixed on the part;

At least one limited cover, it is striden on the shaft of being located at clutch component and axle part, and is fixed on the wall of a fixed part with a location clutch component and an axle part.

2. the movable base of cleaner as claimed in claim 1, it is characterized in that: wherein the motor chamber on the base is located at base one side place, the main wheel mouth is an opening of being located at the motor chamber side, the accessory whorl mouth is an opening of being located at main wheel mouth reverse side, the axle fixed part is located at major and minor the wheel between the mouth, which is provided with an elongated axial trough and a clutch chamber; And clutch component is connected in main shaft.

3. the movable base of cleaner as claimed in claim 2, it is characterized in that: wherein main wheel is provided with an axis part in the center of the reverse side of motor;

And clutch component further comprises a driving link and a driven member; Side is provided with a fixed axis outside the driving link, and it is fixedly connected on the axis part of main wheel and makes driving link and main wheel be coaxial corotation relation, and the driving link inner side end is provided with the clutch tooth that plural number distributes in the form of a ring; Driven member outside end face is provided with the clutch tooth corresponding to the clutch tooth of driving link, and it optionally is engaged in the clutch tooth of driving link when main wheel just changes, and breaks away from when main wheel reverses and the engagement of the clutch tooth of driving link, and the driven member medial extremity is provided with a cover portion;

And axle part one end is arranged in the cover portion of driven member and be fastened into the relation of coaxial corotation with cover portion, and is provided with an elastic component between cover portion diapire and axle part this end, moreover other holds a part and be provided with one and meet portion;

And run through and be provided with one and connect the hole, its sheathed being fixed in the portion of connecing in corresponding engagement ground at the core wheel place of accessory whorl.

4. the movable base of cleaner as claimed in claim 3, it is characterized in that: wherein the axis part of main wheel is a non-circular hole that connects; And the axis part of the corresponding main wheel of the fixed axis axle head external form of driving link and by this engage sleeves be connected to main wheel.

5. the movable base of cleaner as claimed in claim 3 is characterized in that: wherein the cover portion of driven member is provided with the elongated engagement opening of plural number in open end; And end place peripheral wall surface is provided with gear block in the corresponding cover of axle spare portion, and it is arranged in slippingly to be fastened in the engagement opening and with it and forms the relation of corotation.

6. the movable base of cleaner as claimed in claim 3 is characterized in that: wherein be provided with a stopper slot on the axial trough of base cross-sectionly; And that the shaft of axle part is provided with a spacing ring is prominent, and its correspondence is equipped in the stopper slot.

7. the movable base of cleaner as claimed in claim 3 is characterized in that: the portion of connecing of its axis spare has non-circular section and is provided with a fixing hole in place, the portion of connecing end top; And from the accessory whorl outboard end with one outside in addition fixture be arranged in the fixing hole of a part so that accessory whorl is fixed on the part.

8. the movable base of cleaner as claimed in claim 3 is characterized in that: wherein cover portion diapire is a spring with the elastic component of axle part.

9. the movable base of cleaner as claimed in claim 3, it is characterized in that: wherein main wheel is greater than accessory whorl.

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