技术领域technical field
本发明涉及一种投影屏幕，具体是一种计算机教学用便携式投影屏幕。The invention relates to a projection screen, in particular to a portable projection screen for computer teaching.
背景技术Background technique
目前，由于办公条件的改善，投影仪和与其配套的投影屏幕已被广泛用于教学中。随着科学技术的进步，投影技术也得到迅速的发展，投影仪朝着更小、更轻、更智能的方向发展。然而，投影屏幕的结构基本上没有什么改变。整个投影屏幕不仅体积大，而且重量重，携带不便，影响了投影仪更换场地时的使用。At present, due to the improvement of office conditions, projectors and their supporting projection screens have been widely used in teaching. With the advancement of science and technology, projection technology has also developed rapidly, and projectors are developing in a smaller, lighter, and smarter direction. However, the construction of the projection screen remains largely unchanged. The entire projection screen is not only bulky, but also heavy and inconvenient to carry, which affects the use of the projector when changing venues.
发明内容Contents of the invention
本发明提供一种计算机教学用便携式投影屏幕，可解决上述问题。The invention provides a portable projection screen for computer teaching, which can solve the above problems.
一种计算机教学用便携式投影屏幕，包括左立筒、右立筒、用于安装左立筒和右立筒的两个支撑腿及安装在左立筒和右立筒之间的幕布，所述左立筒和右立筒的上端和下端均对应安装有上支座和下支座；所述左立筒包括安装在相应上支座和下支座之间的第一立柱、能够转动地安装在第一立柱上的第一转轴、安装在第一转轴外部的第一筒体及安装在第一筒体上用于驱动第一转轴转动地第一动力源；所述第一筒体的右侧开设有供幕布穿过的第一条形通孔；所述第一转轴上开设有用于卡接幕布端部的第一限位槽；所述右立筒包括安装在相应上支座和下支座之间的第二立柱和位于第二立柱外部的第二筒体；所述第二筒体的左侧开设有供幕布穿过的第二条形通孔；所述第二立柱上开设有用于卡接幕布端部的第二限位槽；所述支撑腿包括底板、安装在底板底部的万向轮及安装在底板上方能够伸缩的升降装置；所述升降装置的上端安装有支撑板，所述下支座安装在支撑板上；所述第一筒体的前侧开设有若干组定位槽，每组定位槽包括第一定位槽和位于第一定位槽正下方的第二定位槽；第一定位槽和第二定位槽上安装有连接杆，所述连接杆的两端分别设有与第一定位槽、第二定位槽相配合的定位块；所述第二筒体上正对第一定位槽的位置处开设有与第二定位槽相同的第三定位槽。A portable projection screen for computer teaching, comprising a left vertical tube, a right vertical tube, two supporting legs for installing the left vertical tube and the right vertical tube, and a curtain installed between the left vertical tube and the right vertical tube, the The upper and lower ends of the left vertical tube and the right vertical tube are respectively equipped with an upper support and a lower support; the left vertical tube includes a first column installed between the corresponding upper support and the lower support. The first rotating shaft on the first column, the first cylinder installed outside the first rotating shaft and the first power source installed on the first cylinder for driving the first rotating shaft to rotate; the right side of the first cylinder There is a first strip-shaped through hole on the side for the screen to pass through; the first rotating shaft is provided with a first limit groove for clamping the end of the screen; the right vertical tube includes a corresponding upper support and a lower The second column between the supports and the second cylinder outside the second column; the left side of the second cylinder is provided with a second strip-shaped through hole for the curtain to pass through; the second column is provided with There is a second limit slot for clamping the end of the curtain; the supporting legs include a base plate, a universal wheel installed on the bottom of the base plate and a telescopic lifting device installed above the base plate; a support plate is installed on the upper end of the lifting device , the lower support is installed on the support plate; the front side of the first cylinder is provided with several sets of positioning grooves, each set of positioning grooves includes a first positioning groove and a second positioning groove directly below the first positioning groove A connecting rod is installed on the first positioning groove and the second positioning groove, and the two ends of the connecting rod are respectively provided with a positioning block matched with the first positioning groove and the second positioning groove; A third positioning slot identical to the second positioning slot is opened at the position of the first positioning slot.
优选地，所述底板为U型板，U型板内底部开设有安装槽，安装槽内安装有缓冲弹簧，缓冲弹簧的上端与升降装置的底部连接。Preferably, the bottom plate is a U-shaped plate, and the bottom of the U-shaped plate is provided with a mounting groove, and a buffer spring is installed in the mounting groove, and the upper end of the buffer spring is connected to the bottom of the lifting device.
优选地，所述U型板内两侧壁上对称安装有弹性垫。Preferably, elastic pads are symmetrically installed on both inner side walls of the U-shaped plate.
优选地，所述升降装置包括电动伸缩杆和安装在底板上用于驱动电动伸缩杆的第二动力源。Preferably, the lifting device includes an electric telescopic rod and a second power source installed on the bottom plate for driving the electric telescopic rod.
优选地，还包括能够将左立筒和右立筒包围的外壳，所述外壳包括前壳和后壳，前壳的左端与后壳的左端铰接在一起；前壳的右端设有若干个凸出部，所述后壳的右端开设有与凸出部相配合的凹陷部。Preferably, it also includes a shell that can surround the left vertical tube and the right vertical tube, the shell includes a front shell and a rear shell, the left end of the front shell is hinged with the left end of the rear shell; the right end of the front shell is provided with several protrusions The right end of the rear shell is provided with a concave part matched with the protruding part.
本发明可通过操控万向轮实现整个装置的移动或携带。利用连接杆可实现右立筒和左立筒的固定。最终，通过各个部件的配合，可方便实现投影仪更换场地时的使用，携带方便。The invention can realize the movement or carrying of the whole device by manipulating the universal wheel. The fixing of the right vertical tube and the left vertical tube can be realized by using the connecting rod. Finally, through the cooperation of various components, the projector can be conveniently used when changing venues, and is easy to carry.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1为本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图2为本发明两个立筒部分剖开的示意图；Fig. 2 is the schematic diagram that two vertical tubes of the present invention are partially cut;
图3为本发明不使用时的示意图；Fig. 3 is the schematic diagram when the present invention is not in use;
图4为图3升降装置收缩后的示意图；Fig. 4 is a schematic diagram of the retracted lifting device in Fig. 3;
图5为本发明加上外壳后的示意图。Fig. 5 is a schematic diagram of the present invention with a casing added.
附图标记说明：Explanation of reference signs:
1-底板，11-安装槽，12-缓冲弹簧，13-弹性垫，2-万向轮，3-升降装置，4-支撑板，5-下支座，6-左立筒，61-第一立柱，62-第一转轴，63-第一筒体，631-第一定位槽，632-第二定位槽，64-连接杆，7-上支座，8-幕布，9-右立筒，91-第二筒体，911-第三定位槽，92-第二立柱，10-外壳。1-bottom plate, 11-installation groove, 12-buffer spring, 13-elastic pad, 2-universal wheel, 3-lifting device, 4-support plate, 5-lower support, 6-left vertical cylinder, 61-the first One column, 62-first rotating shaft, 63-first cylinder, 631-first positioning groove, 632-second positioning groove, 64-connecting rod, 7-upper support, 8-curtain, 9-right vertical tube , 91-the second cylinder, 911-the third positioning groove, 92-the second column, 10-the shell.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
如图1至图5所示，一种计算机教学用便携式投影屏幕，包括左立筒6、右立筒9、用于安装左立筒6和右立筒9的两个支撑腿及安装在左立筒6和右立筒9之间的幕布8，所述左立筒6和右立筒9的上端和下端均对应安装有上支座7和下支座5；所述左立筒6包括安装在相应上支座7和下支座5之间的第一立柱61、能够转动地安装在第一立柱61上的第一转轴62、安装在第一转轴62外部的第一筒体63及安装在第一筒体63上用于驱动第一转轴62转动地第一动力源；所述第一筒体63的右侧开设有供幕布8穿过的第一条形通孔；所述第一转轴62上开设有用于卡接幕布8端部的第一限位槽；所述右立筒9包括安装在相应上支座7和下支座5之间的第二立柱92和位于第二立柱92外部的第二筒体91；所述第二筒体91的左侧开设有供幕布8穿过的第二条形通孔；所述第二立柱92上开设有用于卡接幕布8端部的第二限位槽；所述支撑腿包括底板1、安装在底板1底部的万向轮2及安装在底板1上方能够伸缩的升降装置3；所述升降装置3的上端安装有支撑板4，所述下支座5安装在支撑板4上；所述第一筒体63的前侧开设有若干组定位槽，每组定位槽包括第一定位槽631和位于第一定位槽631正下方的第二定位槽632；第一定位槽631和第二定位槽632上安装有连接杆64，所述连接杆64的两端分别设有与第一定位槽631、第二定位槽632相配合的定位块；所述第二筒体91上正对第一定位槽631的位置处开设有与第二定位槽632相同的第三定位槽911。As shown in Figures 1 to 5, a portable projection screen for computer teaching includes a left vertical tube 6, a right vertical tube 9, two supporting legs for installing the left vertical tube 6 and the right vertical tube 9, and is installed on the left vertical tube. The curtain 8 between the vertical tube 6 and the right vertical tube 9, the upper and lower ends of the left vertical tube 6 and the right vertical tube 9 are correspondingly equipped with an upper support 7 and a lower support 5; the left vertical tube 6 includes The first column 61 installed between the corresponding upper support 7 and the lower support 5, the first rotating shaft 62 rotatably installed on the first column 61, the first cylindrical body 63 installed outside the first rotating shaft 62 and The first power source installed on the first cylinder 63 for driving the first rotating shaft 62 to rotate; the right side of the first cylinder 63 is provided with a first strip-shaped through hole for the curtain 8 to pass through; A rotating shaft 62 is provided with a first limiting groove for clamping the end of the curtain 8; the right vertical tube 9 includes a second column 92 installed between the corresponding upper support 7 and the lower support 5 and located on the second The second cylinder 91 outside the column 92; the left side of the second cylinder 91 is provided with a second strip-shaped through hole for the curtain 8 to pass through; the second column 92 is provided with an end for clamping the curtain 8 The second limit groove of the part; the supporting legs include the base plate 1, the universal wheel 2 installed on the bottom of the base plate 1 and the telescopic lifting device 3 installed above the base plate 1; the upper end of the lifting device 3 is equipped with a support plate 4. The lower support 5 is installed on the support plate 4; the front side of the first cylinder 63 is provided with several sets of positioning grooves, and each set of positioning grooves includes a first positioning groove 631 and a The second positioning groove 632 below; the connecting rod 64 is installed on the first positioning groove 631 and the second positioning groove 632, and the two ends of the connecting rod 64 are respectively provided with the first positioning groove 631, the second positioning groove 632. A matching positioning block; a third positioning slot 911 identical to the second positioning slot 632 is opened on the second cylinder 91 at a position facing the first positioning slot 631 .
优选地，所述底板1为U型板，U型板内底部开设有安装槽11，安装槽11内安装有缓冲弹簧12，缓冲弹簧12的上端与升降装置3的底部连接，可减少移动过程中的振动。Preferably, the bottom plate 1 is a U-shaped plate, and the bottom of the U-shaped plate is provided with a mounting groove 11, and a buffer spring 12 is installed in the mounting groove 11, and the upper end of the buffer spring 12 is connected to the bottom of the lifting device 3, which can reduce the movement process. Vibration in.
优选地，所述U型板内两侧壁上对称安装有弹性垫13。Preferably, elastic pads 13 are symmetrically installed on both inner side walls of the U-shaped plate.
优选地，所述升降装置3包括电动伸缩杆和安装在底板1上用于驱动电动伸缩杆的第二动力源。Preferably, the lifting device 3 includes an electric telescopic rod and a second power source installed on the bottom plate 1 for driving the electric telescopic rod.
优选地，还包括能够将左立筒6和右立筒9包围的外壳10，所述外壳10包括前壳和后壳，前壳的左端与后壳的左端铰接在一起；前壳的右端设有若干个凸出部，所述后壳的右端开设有与凸出部相配合的凹陷部。外壳10的增设可对左立筒6和右立筒9进行防护，确保携带过程中被其他物体碰撞。Preferably, it also includes a shell 10 that can surround the left vertical tube 6 and the right vertical tube 9, the shell 10 includes a front shell and a rear shell, the left end of the front shell and the left end of the rear shell are hinged together; the right end of the front shell is provided There are several protrusions, and the right end of the rear shell is provided with a recess matched with the protrusions. The addition of the shell 10 can protect the left vertical tube 6 and the right vertical tube 9 to ensure that they are bumped by other objects during carrying.
如图5所示，正常状态下(不使用时)，两个万向轮2处于锁紧状态。使用时，先将万向轮2打开，并将整个装置移动至需要的场合。然后将外壳10的凸出部从凹陷部中取出，并将整个外壳10取下，如图4所示。再将连接杆64的右端从第三定位槽911中取下，并旋转卡接在第二定位槽632内。接着，启动第一动力源，同时将右立筒9向远离左立筒6的方向移动，直至幕布8完全伸展开。最后，启动第二动力源控制电动伸缩杆伸至所需高度即可，如图1所示。当然，也可以先启动第二动力源控制电动伸缩杆伸至所需高度，再将连接杆64取下，启动第一动力源，并将右立筒9向远离左立筒6的方向移动，直至幕布8完全伸展开。使用后，可按照上述展开过程的相反顺序进行收存。最终，本发明通过各个部件的配合，可方便实现投影仪更换场地时的使用，携带方便。As shown in Figure 5, under normal conditions (when not in use), the two universal wheels 2 are locked. During use, the universal wheel 2 is opened earlier, and the whole device is moved to a desired occasion. Then take out the protruding part of the shell 10 from the recessed part, and take off the whole shell 10, as shown in FIG. 4 . Then, the right end of the connecting rod 64 is removed from the third positioning slot 911 , and is rotated and engaged in the second positioning slot 632 . Then, start the first power source, and move the right vertical tube 9 to the direction away from the left vertical tube 6 at the same time, until the curtain 8 is fully extended. Finally, start the second power source to control the electric telescopic rod to reach the desired height, as shown in Figure 1. Of course, it is also possible to first start the second power source to control the electric telescopic rod to reach the required height, then remove the connecting rod 64, start the first power source, and move the right vertical tube 9 to a direction away from the left vertical tube 6, Stretch out fully until curtain 8. After use, it can be stored in the reverse order of the above-mentioned unfolding process. Finally, through the cooperation of various components, the present invention can facilitate the use of the projector when changing venues, and is easy to carry.
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106841.9ACN108172035B (en) | 2018-02-02 | 2018-02-02 | A portable projection screen for computer teaching |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106841.9ACN108172035B (en) | 2018-02-02 | 2018-02-02 | A portable projection screen for computer teaching |
| Publication Number | Publication Date |
|---|---|
| CN108172035Atrue CN108172035A (en) | 2018-06-15 |
| CN108172035B CN108172035B (en) | 2020-02-21 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810106841.9AActiveCN108172035B (en) | 2018-02-02 | 2018-02-02 | A portable projection screen for computer teaching |
| Country | Link |
|---|---|
| CN (1) | CN108172035B (en) |
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| CN113992899A (en)* | 2021-10-21 | 2022-01-28 | 浙江科比特科技有限公司 | Unmanned aerial vehicle passes back image composite graph equipment in real time |
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| CN112863257A (en)* | 2021-01-21 | 2021-05-28 | 菏泽学院 | Case analysis device for political and economic teaching |
| CN112863257B (en)* | 2021-01-21 | 2022-04-29 | 菏泽学院 | A Case Analysis Device for Political Economy Teaching |
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