Teaching projection device

Abstract

The utility model relates to the technical field of projectors, in particular to a teaching projection device, which is characterized in that a limiting device comprises a sliding chute, the sliding chute is arranged on the surface of one side of a mounting seat, two sliding blocks are connected in the sliding chute in a sliding manner, a first spring is fixedly mounted between the two sliding blocks, and a hinge plate is hinged to the surface of one end, far away from the sliding chute, of each sliding block; a T-shaped plate is hinged to the end, away from the sliding block, of the hinged plate, an inserting rod is fixedly installed on the surface of the T-shaped plate, and an inserting hole is formed in the surface of one side of the inserting plate. The intelligent projection device for teaching solves the problems that the mounting plate and the projector of the existing intelligent projection device for teaching cannot be detached, so that when the projector is damaged, only the mounting plate can be detached from the wall top, and the mounting plate and the wall top are connected through bolts, so that the projector cannot be detached from the wall top. And the screw slipping phenomenon easily occurs in the repeated dismounting process of the bolt, and meanwhile, the wall surface of the wall top is easily damaged when the bolt is repeatedly dismounted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a projector technical field especially relates to a teaching projection device. BACKGROUND

[0002] The projector is a kind of optical instrument using optical element to enlarge the profile of workpiece, and it projects to the screen, it can use transmission light to measure profile, also can use reflected light to measure the surface shape of not-through hole and observe the surface of part, projector is widely used in family, office, school and entertainment place currently, according to the different work mode, there is CRT, LCD, DLP and different types.

[0003] The prior art patent number for teaching's intelligent projection device for CN212840580U, the patent is fixedly connected with vertical rod in the one end of horizontal plate, the lower end of vertical rod is rotatably connected with connecting plate, and electric telescopic rod is connected between horizontal plate and connecting plate, the inclination angle of projector can be adjusted by controlling the extension of electric telescopic rod, so as to adjust projection picture, convenient to use.

[0004] The inventor found in daily work that the mounting plate and the projector of the above-mentioned teaching intelligent projection device cannot be disassembled, so that when the projector is damaged, the mounting plate can only be disassembled from the top of the wall, and the mounting plate and the wall top are connected by bolts, and the bolts are prone to slipping during repeated disassembly, and repeated disassembly of the bolts can also damage the wall surface of the wall top. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the technical problem in the above background, and provides a teaching projection device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a teaching projection device, including U-shaped frame and projector body, the top surface of the U-shaped frame is fixedly installed with four mounting plates, the inner wall between the two sides of the U-shaped frame is rotatably connected with the shaft, the surface of the side of the U-shaped frame is fixedly installed with motor, the output end of the motor is fixedly connected with the shaft, the top surface of the projector body is fixedly installed with mounting seat, the outer wall surface of the shaft is fixedly installed with plugboard, the bottom of the plugboard is located in the inside of mounting seat, the surface of the side of the projector body is fixedly installed with filter frame, the inside of filter frame is equipped with heat dissipation mechanism, the surface of the side of mounting seat is equipped with limiting device, the limiting device includes sliding groove, the sliding groove is opened in the surface of the side of mounting seat, the inside of sliding groove is slidably connected with two sliding blocks, two sliding blocks are fixedly installed with first spring. The first spring is arranged to limit the position of the sliding block in the sliding groove.

[0007] Preferably, the sliding block is hinged with a hinge plate at the surface of the end away from the sliding groove, and the hinge plate is hinged with a T-shaped plate at the end away from the sliding block.

[0008] Preferably, the surface of the T-shaped plate is fixedly provided with an insertion rod, and the surface of the insertion plate is provided with an insertion hole.

[0009] Preferably, the side surface of the filter frame is provided with a filter device, the filter device comprises a vertical groove, the vertical groove is arranged on the side surface of the filter frame, the inside of the vertical groove is slidably connected with a U-shaped plate, the end of the U-shaped plate away from the vertical groove is fixedly provided with a filter screen, and the top surface of the filter frame is provided with an entering groove.

[0010] Preferably, the side surface of the U-shaped plate close to the side surface of the horizontal end of the vertical groove is provided with a groove, the inside of the groove is slidably connected with a moving plate, the surface of the moving plate is fixedly provided with a limiting rod, and the side surface of the filter frame is uniformly provided with a plurality of limiting holes.

[0011] Preferably, the side surface of the U-shaped plate close to the side surface of the horizontal end of the vertical groove is fixedly provided with a rectangular plate, and the second spring is fixedly arranged between the rectangular plate and the moving plate.

[0012] Compared with the prior art, the utility model has the advantages and positive effects that:

[0013] 1. The utility model discloses a limiting device is set up, when needing to use the device, first through the cooperation of bolt and mounting plate fixes the U type frame on the wall top, then opens the projector, can use, when needing to adjust the angle of projector in the use process, can start motor, and the motor starts and drives the rotation of the pivot, and the pivot rotation drives the rotation of the plug -in board, and the plug -in board rotation drives the rotation of the mounting seat, and the mounting seat rotation drives the rotation of the projector body, when the projector body rotates to the appropriate angle, closes the motor, when the projector body needs to be maintained when being damaged, first pull T type board, and T type board moves and drives the movement of the hinged plate, and the hinged plate moves and drives the movement of the two sliders in the direction of approaching each other in the sliding slot, and the movement of the two sliders in the direction of approaching each other in the sliding slot will extrude the first spring, so that the first spring is compressed under stress, and the movement of T type board also drives the movement of the plug rod, and the movement of the plug rod makes it move out from the inside of the insertion hole, and the separation of the plug rod and the insertion hole makes the plug -in board lose the limiting in the inside of the mounting seat, at this moment, the projector body can be pulled, and the projector body moves and drives the movement of the mounting seat, and the movement of the mounting seat makes the plug -in board move out from its inside, and then the dismounting operation of the projector body is completed, through the cooperation of the above -mentioned structure, when the projector body is damaged, the projector can be dismounted alone, so that the various disadvantages brought by the dismounting between the U type frame and the wall top are avoided.

[0014] 2. The utility model discloses a filter device is set up, when needing to install the filter screen into the inside of the filter frame, first slide moving plate, and the moving plate moves in the inside of the recess, and the moving plate moves in the inside of the recess will extrude the second spring, so that the second spring is compressed under stress, and the moving plate moves in the inside of the recess drives the movement of the limiting rod, and the movement of the limiting rod makes it move out from the inside of the limiting hole, and the separation of the limiting rod and the limiting hole makes the U type board lose the limiting in the inside of the vertical groove, at this moment, the U type board can be moved, and the U type board moves in the inside of the vertical groove drives the filter screen to enter the inside of the installation frame from the entering slot, when the filter screen bottom is located the inside bottom surface of the filter frame, loosen moving plate, and the rebound of the second spring makes the limiting rod reinsert into the inside of the corresponding limiting hole, so as to limit the position of the U type board in the vertical groove at this time, through the cooperation of the above -mentioned structure, the dust of outside is filtered by the filter screen, and the dust of outside is adhered on the surface of the heat dissipation fan of the heat dissipation mechanism, which avoids the adverse effect on the heat dissipation of the heat dissipation mechanism. ACCURACY OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic diagram of the teaching projection device is provided for the utility model;

[0016] Figure 2 A left view structure schematic diagram of the teaching projection device is provided for the utility model;

[0017] Figure 3The utility model provides a kind of teaching projection device's structure schematic diagram of elevation view.

[0018] Figure 4 The utility model provides a kind of teaching projection device Figure 1 Structure schematic diagram of A in it.

[0019] Figure 5 The utility model provides a kind of teaching projection device Figure 3 Structure schematic diagram of B in it.

[0020] Legend:

[0021] 1, U-shaped frame;2, projector body;3, limiting device;31, sliding groove;32, sliding block;33, first spring;34, hinged plate;35, T-shaped plate;36, insertion rod;37, insertion hole;4, filtering device;401, vertical slot;402, U-shaped plate;403, filter screen;404, inlet slot;405, recess;406, moving plate;407, limiting rod;408, limiting hole;409, rectangular plate;410, second spring;5, mounting plate;6, rotating shaft;7, motor;8, mounting seat;9, plugboard;10, filter frame;11, heat dissipation mechanism. Specific implementation

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the drawings and examples.It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, however, the utility model can also be implemented in other ways different from the description herein, therefore, the utility model is not limited to the specific embodiments disclosed in the following disclosure.

[0024] Please refer to Figures 1-5 The utility model provides a technical scheme: a kind of teaching projection device, including U-shaped frame 1 and projector body 2, four mounting plates 5 are fixedly installed on the top surface of U-shaped frame 1, rotating shaft 6 is rotatably connected between the inner wall of both sides of U-shaped frame 1, motor 7 is fixedly installed on the side surface of U-shaped frame 1, the output end of motor 7 and rotating shaft 6 are fixedly connected, mounting seat 8 is fixedly installed on the top surface of projector body 2, plugboard 9 is fixedly installed on the outer wall surface of rotating shaft 6, the bottom of plugboard 9 is located in the inside of mounting seat 8, filter frame 10 is fixedly installed on the side surface of projector body 2, heat dissipation mechanism 11 is located in the inside of filter frame 10.

[0025] The specific setting and function of its limiting device 3 and filtering device 4 are described below.

[0026] In the embodiment, one side surface of the mounting base 8 is provided with a limiting device 3, which comprises a sliding groove 31 formed in the one side surface of the mounting base 8, and two sliding blocks 32 slidably connected in the sliding groove 31, and a first spring 33 fixedly installed between the two sliding blocks 32.

[0027] In the embodiment, the first spring 33 limits the position of the sliding block 32 in the sliding groove 31.

[0028] Specifically, one end surface of the sliding block 32 away from the sliding groove 31 is hingedly connected with a hinge plate 34, and one end of the hinge plate 34 away from the sliding block 32 is hingedly connected with a T-shaped plate 35.

[0029] In the embodiment, the hinge plate 34 drives the sliding block 32 to move in the sliding groove 31.

[0030] Specifically, the T-shaped plate 35 is fixedly installed with a plug rod 36, and one side surface of the plug plate 9 is formed with a plug hole 37. The plug rod 36 and the plug hole 37 limit the plug plate 9 in the mounting base 8.

[0031] In the embodiment, one side surface of the filter frame 10 is provided with a filtering device 4, which comprises a vertical groove 401 formed in the one side surface of the filter frame 10, a U-shaped plate 402 slidably connected in the vertical groove 401, a filter screen 403 fixedly installed at one end of the U-shaped plate 402 away from the vertical groove 401, and an entering groove 404 formed in the top surface of the filter frame 10. When the filter screen 403 needs to be installed in the filter frame 10, first, the moving plate 406 is slidably moved in the groove 405, and the moving plate 406 slidably moving in the groove 405 extrudes the second spring 410, so that the second spring 410 is compressed under stress, and the moving plate 406 slidably moving in the groove 405 drives the limiting rod 407 to move, and the movement of the limiting rod 407 makes it move out of the limiting hole 408, and the separation of the limiting rod 407 and the limiting hole 408 makes the U-shaped plate 402 lose the limitation in the vertical groove 401, so that the U-shaped plate 402 can be moved, and the movement of the U-shaped plate 402 in the vertical groove 401 drives the filter screen 403 to enter the installation frame from the entering groove 404, and when the bottom of the filter screen 403 is located on the bottom surface of the filter frame 10, the moving plate 406 is released, and the rebounding force of the second spring 410 makes the limiting rod 407 re-insert into the corresponding limiting hole 408, so as to limit the position of the U-shaped plate 402 in the vertical groove 401. Through the cooperation of the above structure, the filter screen 403 filters the dust from the outside, so as to avoid the dust from adhering to the surface of the cooling fan of the cooling mechanism 11, and to avoid the adverse effect of the dust on the cooling of the cooling mechanism 11.

[0032] Specifically, the U-shaped plate 402 is provided with a groove 405 on the side surface close to the horizontal end of one side of the vertical groove 401, the groove 405 is slidably connected with a moving plate 406, the surface of the moving plate 406 is fixedly installed with a limiting rod 407, and the surface of one side of the filter frame 10 is uniformly provided with a plurality of limiting holes 408.

[0033] In the embodiment, the limiting rod 407 and the limiting hole 408 are arranged to limit the position of the U-shaped plate 402 in the vertical groove 401.

[0034] Specifically, the U-shaped plate 402 is provided with a rectangular plate 409 fixedly installed on the side surface close to the horizontal end of one side of the vertical groove 401, and a second spring 410 is fixedly installed between the rectangular plate 409 and the moving plate 406.

[0035] In the embodiment, the second spring 410 is arranged to limit the position of the moving plate 406 in the groove 405.

[0036] Working principle: by setting the limiting device 3, when the device is needed, first through the cooperation of bolt and mounting plate 5 U-shaped frame 1 is fixed on the wall top, then open the projector, can be used, in the process of use, the angle of the projector needs to be adjusted, can start the motor 7, the motor 7 starts to drive the rotating shaft 6 rotation, rotating shaft 6 rotation drives the plug-in plate 9 rotation, plug-in plate 9 rotation drives the mounting seat 8 rotation, mounting seat 8 rotation drives the projector rotation, when the projector body 2 is rotated to the appropriate angle, turn off the motor 7, when the projector body 2 is damaged and needs to be maintained, first pull the T-shaped plate 35, the T-shaped plate 35 moves and drives the hinged plate 34 to move, the hinged plate 34 moves and drives the two sliders 32 to move in the direction of approaching each other in the sliding groove 31, the two sliders 32 moving in the direction of approaching each other in the sliding groove 31 will extrude the first spring 33, so that the first spring 33 is compressed under stress, at the same time, the movement of the T-shaped plate 35 also drives the insertion rod 36 to move, the movement of the insertion rod 36 makes it move out of the insertion hole 37, the separation of the insertion rod 36 and the insertion hole 37 makes the plug-in plate 9 lose the limit in the mounting seat 8, at this time, the projector body 2 can be pulled out, the movement of the projector body 2 drives the mounting seat 8 to move, the movement of the mounting seat 8 makes the plug-in plate 9 move out of it, thereby completing the disassembly of the projector body 2, through the cooperation of the above structure, when the projector body 2 is damaged, the projector can be disassembled alone, thereby avoiding the disadvantages brought by disassembling the U-shaped frame 1 and the wall top. When the filter screen 403 needs to be installed into the filter frame 10, first slide the moving plate 406, so that the moving plate 406 moves in the recess 405, the movement of the moving plate 406 in the recess 405 will extrude the second spring 410, so that the second spring 410 is compressed under stress, at the same time, the movement of the moving plate 406 in the recess 405 drives the limiting rod 407 to move, the movement of the limiting rod 407 makes it move out of the limiting hole 408, the separation of the limiting rod 407 and the limiting hole 408 makes the U-shaped plate 402 lose the limit in the vertical slot 401, at this time, the U-shaped plate 402 can be moved, the movement of the U-shaped plate 402 in the vertical slot 401 drives the filter screen 403 to enter the mounting frame from the entering slot 404, when the bottom of the filter screen 403 is located in the bottom surface of the filter frame 10, release the moving plate 406, use the rebound force of the second spring 410 to make the limiting rod 407 reinsert into the corresponding limiting hole 408, so as to limit the position of the U-shaped plate 402 in the vertical slot 401 at this time, through the cooperation of the above structure, use the filter screen 403 to filter the dust from the outside, avoid the dust from the outside adhering to the surface of the cooling fan of the cooling mechanism 11, which will adversely affect the cooling of the cooling mechanism 11.

[0037] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and alteration of the above embodiments without departing from the technical content of the present application, according to the technical essence of the present application, still belong to the protection scope of the present application. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A teaching projection device, comprising a U-shaped frame (1) and a projector body (2), wherein four mounting plates (5) are fixedly installed on the top surface of the U-shaped frame (1), a rotating shaft (6) is rotatably connected between the inner walls of the two sides of the U-shaped frame (1), a motor (7) is fixedly installed on one side surface of the U-shaped frame (1), the output end of the motor (7) is fixedly connected to the rotating shaft (6), a mounting base (8) is fixedly installed on the top surface of the projector body (2), a plug plate (9) is fixedly installed on the outer wall surface of the rotating shaft (6), the bottom of the plug plate (9) is located inside the mounting base (8), a filter frame (10) is fixedly installed on one side surface of the projector body (2), and a heat dissipation mechanism (11) is provided inside the filter frame (10), characterized in that: The side surface of the mounting seat (8) is provided with a limiting device (3), the limiting device (3) comprises a sliding groove (31), the sliding groove (31) is opened in the side surface of the mounting seat (8), the inside of the sliding groove (31) is slidably connected with two sliding blocks (32), the first spring (33) is fixedly installed between the two sliding blocks (32).

2. A teaching projection device according to claim 1, characterized in that: The end surface of the sliding block (32) away from the sliding groove (31) is hingedly connected with a hinge plate (34), one end of the hinge plate (34) away from the sliding block (32) is hingedly connected with a T-shaped plate (35).

3. A teaching projection device according to claim 2, characterized in that: The surface of the T-shaped plate (35) is fixedly installed with an insertion rod (36), the side surface of the insertion plate (9) is provided with an insertion hole (37).

4. A teaching projection device according to claim 3, characterized in that: The side surface of the filter frame (10) is provided with a filtering device (4), the filtering device (4) comprises a vertical groove (401), the vertical groove (401) is opened in the side surface of the filter frame (10), the inside of the vertical groove (401) is slidably connected with a U-shaped plate (402), the U-shaped plate (402) is fixedly installed with a filter screen (403) away from the vertical groove (401), the top surface of the filter frame (10) is provided with an entering groove (404).

5. A teaching projection device according to claim 4, characterized in that: The side surface of the U-shaped plate (402) close to the side surface of the horizontal end of the vertical groove (401) is provided with a groove (405), the inside of the groove (405) is slidably connected with a moving plate (406), the surface of the moving plate (406) is fixedly installed with a limiting rod (407), the side surface of the filter frame (10) is uniformly provided with a plurality of limiting holes (408).

6. A teaching projection device according to claim 5, characterized in that: The side surface of the U-shaped plate (402) close to the side surface of the horizontal end of the vertical groove (401) is fixedly installed with a rectangular plate (409), the second spring (410) is fixedly installed between the rectangular plate (409) and the moving plate (406).

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