Projector for multimedia classroom

Abstract

The utility model discloses a multimedia classroom projector, relates to the projector technology field, a mounting plate is connected with a projector body through a mounting mechanism, the mounting mechanism comprises: a fixed seat, which is fixedly connected on the mounting plate and is provided with an accommodating groove; the two sets of locking pieces are oppositely arranged, each locking piece comprises a wedge-shaped block and an elastic piece, each wedge-shaped block is horizontally and slidably connected to the corresponding fixing base through a pull rod, a locking station protruding into the corresponding containing groove is formed in the sliding stroke, relative to the corresponding fixing base, of each wedge-shaped block, and rapid installation of the projector body can be achieved through the two locking pieces which are oppositely arranged; and when the locking of any locking piece to the connecting plate is released, the unlocking piece drives the other locking piece to release the locking of the connecting plate, so that not only is the mounting efficiency of the projector improved, but also the efficiency of detaching the projector from the fixed seat is improved, the time of maintenance personnel on the escalator can be effectively shortened, and the danger is indirectly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of projectors, in particular to a projector for a multimedia classroom. Background Art

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals.

[0003] The patent with announcement number CN107131413A discloses a multimedia classroom projector, which includes a power box, a movable rod is movably connected to the left side of the top of the inner cavity of the power box through a first bearing, the top of the movable rod penetrates to the outside of the power box and is movably connected to a first fixed block through a first rotating shaft, and the bottom of the first fixed block is fixedly connected to the body. The present invention solves the problem that the existing multimedia classroom projector cannot automatically adjust the angle by arranging the power box, the movable rod, the first fixed block, the body, the second fixed block, the electric telescopic rod, the motor, the transmission column, the first gear, the second gear, the baffle, the fixed ring, the sealing ring, the fixed plate, the mounting hole and the third fixed block. The projector has the advantage of automatically adjusting the angle. When the picture projected by the projector deviates from the projection cloth, it can be convenient for the user to adjust, thereby enhancing the practicality of the projector.

[0004] In the prior art such as the above-mentioned patent, the projector can be fixed on the roof of the multimedia classroom by using the mounting holes opened on the fixing plate in combination with the bolts. Since the multimedia classroom uses the projector frequently, the maintenance personnel inevitably need to inspect and repair the projector. The maintenance personnel need to remove the projector on the roof and return to the ground to conveniently inspect the projector. However, in the above-mentioned patent, the worker needs to remove the bolts in order to remove the projector. The longer the maintenance personnel stay on the escalator, the higher the risk. Therefore, it is particularly important to be able to remove the projector quickly. Utility Model Content

[0005] The purpose of the utility model is to provide a projector for a multimedia classroom to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a projector for a multimedia classroom, comprising a mounting plate fixedly mounted on the wall of the classroom, the mounting plate being connected to a projector body via a mounting mechanism, the mounting mechanism comprising: a fixing seat, which is fixedly connected to the mounting plate and has a receiving groove thereon; two groups of locking members arranged opposite to each other, the locking members comprising a wedge block and an elastic member, the wedge block being horizontally slidably connected to the fixing seat via a pull rod, the wedge block having a locking position protruding into the receiving groove during its sliding stroke relative to the fixing seat; a connecting plate, the projector body being arranged on the connecting plate, the connecting plate squeezing and passing over the wedge block during the process of entering the receiving groove, the elastic force of the elastic member driving the wedge block to slide to the locking position to abut against the bottom of the connecting plate; an unlocking member, which is arranged inside the fixing seat and is used to unlock the two locking members at the same time.

[0007] Furthermore, the unlocking member includes a rotating rod, the middle part of the rotating rod is rotatably connected to the fixed seat through a rotating shaft, and the two ends of the rotating rod are respectively rotatably connected to the rocker rods, and the ends of the two rocker rods away from the rotating rods are respectively rotatably connected to the connecting rods, and the ends of the two connecting rods away from the rocker rods are fixedly connected to the pull rods of the two locking members. When any connecting rod is pulled in a direction away from the fixed seat, while the connecting rod drives the locking member connected to it to unlock, the connecting rod will drive the rotating rod to rotate by rotating the rocker rod connected to the connecting rod, and the rotation of the rotating rod will drive the other connecting rod away from the fixed seat through the other rocker rod, and the other connecting rod will unlock the other locking member when it moves away from the fixed seat. At this time, it is possible to pull any connecting rod and simultaneously unlock the two locking members.

[0008] Furthermore, a rotating plate is rotatably connected to the connecting plate, and two vertical plates are fixedly connected to the rotating plate. The projector body is rotatably connected between the two vertical plates through a rotating shaft. A connecting shell is fixedly installed on one side of any vertical plate. A first driving member is provided in the connecting plate, and the first driving member drives the rotating plate to rotate. A second driving member is provided in the connecting shell, and the second driving member drives the projector body to rotate. The projector body is installed on the rotating plate through the vertical plate. The rotation of the rotating plate and the rotation of the projector body and the vertical plate can adjust the angle of the projector body relative to the fixed seat.

[0009] Furthermore, the first driving member includes a first motor, which is fixedly installed in the connecting plate, and the output shaft of the first motor is fixedly connected to the rotating plate. The second driving member includes a second motor, and the second motor drives the rotating shaft to rotate through a reduction gear group. The first motor can drive the rotating plate to rotate relative to the connecting plate, and then the rotating plate drives the projector body to rotate horizontally. The second motor drives the gear group to rotate, and then the gear group drives the projector body to rotate to adjust to another angle.

[0010] Furthermore, the gear group includes an input gear and an output gear, the input gear is coaxially fixedly connected to the rotating shaft of the second motor, the output gear is coaxially fixedly connected to the rotating shaft, the input gear and the output gear are meshed, the diameter of the input gear is smaller than the output gear, the rotating shaft is fixedly connected to the projector body, the vertical swing angle of the projector body is relatively small, and the meshing of the input gear and the output gear can make the rotation speed of the rotating shaft smaller than the rotation speed of the driving shaft of the second motor, thereby making the angle adjustment of the projector body more accurate.

[0011] In the above technical scheme, the utility model provides a projector for a multimedia classroom, which can realize the rapid installation of the projector body through two relatively arranged locking parts. When any locking part releases the lock on the connecting plate, the unlocking part will drive the other locking part to release the lock on the connecting plate. This not only improves the efficiency of installing the projector, but also improves the efficiency of removing the projector from the fixed seat, which can effectively reduce the time of maintenance personnel on the escalator and indirectly reduce the danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1 A schematic diagram of the overall structure of the device provided in the embodiment of the utility model;

[0014] Figure 2 A schematic diagram of the disassembly of the fixing seat and the connecting plate provided in the embodiment of the utility model;

[0015] Figure 3 A schematic diagram of the internal structure of a fixing base provided in an embodiment of the utility model;

[0016] Figure 4 A schematic diagram of a partial structure of a device provided in an embodiment of the utility model;

[0017] Figure 5 A schematic diagram of the internal structure of a connecting shell provided in an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] 1. Mounting plate; 11. Projector body; 2. Fixing seat; 21. Accommodating groove; 22. Wedge block; 221. Pull rod; 23. Elastic member; 3. Connecting plate; 31. Rotating plate; 32. First motor; 4. Rotating rod; 41. Rotating shaft; 42. Rocker arm; 421. Connecting rod; 5. Vertical plate; 51. Connecting shell; 6. Second motor; 61. Input gear; 7. Rotating shaft; 71. Output gear. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] See also Figure 1-5 A multimedia classroom projector provided by an embodiment of the utility model comprises a mounting plate 1 fixedly mounted on the wall of the classroom, a projector body 11 being connected to the mounting plate 1 through a mounting mechanism, and the mounting mechanism comprising: a fixing seat 2, which is fixedly connected to the mounting plate 1 and provided with a receiving groove 21; two sets of locking members arranged opposite to each other, the locking members comprising a wedge block 22 and an elastic member 23, the wedge block 22 being horizontally slidably connected to the fixing seat 2 through a pull rod 221, the wedge block 22 having a locking position protruding into the receiving groove 21 in a sliding stroke relative to the fixing seat 2; a connecting plate 3, the projector body 11 being arranged on the connecting plate 3, the connecting plate 3 squeezing and passing over the wedge block 22 in the process of entering the receiving groove 21, the elastic force of the elastic member 23 driving the wedge block 22 to slide to the locking position to abut against the bottom of the connecting plate 3; an unlocking member, which is arranged inside the fixing seat 2 and is used to unlock the two locking members at the same time.

[0022] When installing the projector body 11: support the bottom of the projector body 11 with your hand so that the connecting plate 3 is aligned with the receiving groove 21 on the fixing seat 2, and then slowly push the connecting plate 3 into the receiving groove 21. The connecting plate 3 will abut against the two wedge blocks 22 during the process of entering the receiving groove 21, so that the two wedge blocks 22 are out of the locking position. When the connecting plate 3 contacts the top plate of the inner wall of the receiving groove 21, the wedge blocks 22 will return to the locking position under the elastic force of the elastic member 23 to lock the connecting plate 3. At this time, the two locking members are locked to the connecting plate 3. The locking is carried out simultaneously; when disassembling the projector, pull the pull rod 221 of any locking member, the pull rod 221 will drive the wedge block 22 to slide and squeeze the elastic member 23 at the same time, thereby releasing the lock of this locking member. During the process of releasing the lock of this locking member, the locking work of another locking member will be driven by the unlocking member, so that the two locking members are released at the same time, which facilitates the work of the workers and speeds up the disassembly efficiency. The elastic member 23 here is a spring, one end of the spring is fixedly connected to the wedge block 22, and the other end is fixedly connected to the inner wall of the fixing seat 2.

[0023] In the above technical scheme, the utility model provides a projector for a multimedia classroom, which can realize the rapid installation of the projector body 11 through two relatively arranged locking members. When any locking member is released from the lock of the connecting plate 3, the unlocking member will drive the other locking member to release the lock of the connecting plate 3. This not only improves the efficiency of installing the projector, but also improves the efficiency of removing the projector from the fixing seat 2, which can effectively reduce the time of maintenance personnel on the escalator and indirectly reduce the danger.

[0024] As a preferred technical solution of this embodiment, the unlocking member includes a rotating rod 4, the middle part of which is rotatably connected to the fixed seat 2 through a rotating shaft 41, and the two ends of the rotating rod 4 are respectively rotatably connected to the rocker rods 42, and the two rocker rods 42 are respectively rotatably connected to the ends of the rotating rod 4 that are away from the rotating rod 4 with connecting rods 421, and the two connecting rods 421 are fixedly connected to the pull rods 221 of the two locking members at one end away from the rocker rod 42. When any connecting rod 421 is pulled in a direction away from the fixed seat 2, while the connecting rod 421 drives the locking member connected thereto to unlock, the connecting rod 421 will drive the rotating rod 4 to rotate by rotating the rocker rod 42 connected to the connecting rod 421, and the rotation of the rotating rod 4 will drive the other connecting rod 421 away from the fixed seat 2 through the other rocker rod 42, and the other connecting rod 421 will release the other locking member while moving away from the fixed seat 2. At this time, it is possible to pull any connecting rod 421 and release the lock of the two locking members at the same time.

[0025] As a preferred technical solution of this embodiment, a rotating plate 31 is rotatably connected to the connecting plate 3, and two vertical plates 5 are fixedly connected to the rotating plate 31. The projector body 11 is rotatably connected between the two vertical plates 5 through a rotating shaft 7. A connecting shell 51 is fixedly installed on one side of any vertical plate 5. A first driving member is provided in the connecting plate 3, and the first driving member drives the rotating plate 31 to rotate. A second driving member is provided in the connecting shell 51, and the second driving member drives the projector body 11 to rotate. The projector body 11 is installed on the rotating plate 31 through the vertical plate 5. The rotation of the rotating plate 31 and the rotation of the projector body 11 and the vertical plate 5 can adjust the angle of the projector body 11 relative to the fixed base 2.

[0026] As a preferred technical solution of this embodiment, the first driving member includes a first motor 32, which is fixedly installed in the connecting plate 3, and the output shaft of the first motor 32 is fixedly connected to the rotating plate 31. The second driving member includes a second motor 6, and the second motor 6 drives the rotating shaft 7 to rotate through the reduction gear group. The first motor 32 can drive the rotating plate 31 to rotate relative to the connecting plate 3, and then the rotating plate 31 drives the projector body 11 to rotate horizontally. The second motor 6 drives the gear group to rotate, and then the gear group drives the projector body 11 to rotate to adjust another angle.

[0027] As a preferred technical solution of this embodiment, the gear group includes an input gear 61 and an output gear 71. The input gear 61 is coaxially fixedly connected to the rotating shaft 7 of the second motor 6, and the output gear 71 is coaxially fixedly connected to the rotating shaft 7. The input gear 61 and the output gear 71 are meshed. The diameter of the input gear 61 is smaller than that of the output gear 71. The rotating shaft 7 is fixedly connected to the projector body 11. The vertical swing angle of the projector body 11 is relatively small. The meshing of the input gear 61 and the output gear 71 can make the rotation speed of the rotating shaft 7 smaller than the rotation speed of the driving shaft of the second motor 6, so that the angle adjustment of the projector body 11 is more accurate.

[0028] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A projector for a multimedia classroom, comprising a mounting plate (1) fixedly mounted on a wall of the classroom, wherein a projector body (11) is connected to the mounting plate (1) via a mounting mechanism, wherein: The mounting mechanism comprises: A fixing seat (2) fixedly connected to the mounting plate (1) and having a receiving groove (21); Two groups of locking members are arranged opposite to each other, the locking members comprising a wedge block (22) and an elastic member (23), the wedge block (22) being horizontally slidably connected to the fixed seat (2) via a pull rod (221), and the wedge block (22) having a locking position protruding into the receiving groove (21) during the sliding stroke relative to the fixed seat (2); A connecting plate (3), the projector body (11) being arranged on the connecting plate (3), the connecting plate (3) being pressed and passing over the wedge block (22) during the process of entering the receiving groove (21), the elastic force of the elastic member (23) driving the wedge block (22) to slide to the locking position so as to abut against the bottom of the connecting plate (3); An unlocking member is arranged inside the fixing seat (2) and is used to unlock the two locking members simultaneously.

2. A multimedia classroom projector according to claim 1, characterized in that: The unlocking member comprises a rotating rod (4), the middle part of the rotating rod (4) is rotatably connected to the fixed seat (2) via a rotating shaft (41), the two ends of the rotating rod (4) are respectively rotatably connected to swing rods (42), the ends of the two swing rods (42) away from the rotating rod (4) are respectively rotatably connected to connecting rods (421), and the ends of the two connecting rods (421) away from the swing rods (42) are fixedly connected to the pull rods (221) of the two locking members.

3. A multimedia classroom projector according to claim 1, characterized in that: The connecting plate (3) is rotatably connected to a rotating plate (31), and two vertical plates (5) are fixedly connected to the rotating plate (31). The projector body (11) is rotatably connected between the two vertical plates (5) via a rotating shaft (7). A connecting shell (51) is fixedly installed on one side of any vertical plate (5). A first driving member is provided in the connecting plate (3), and the first driving member drives the rotating plate (31) to rotate. A second driving member is provided in the connecting shell (51), and the second driving member drives the projector body (11) to rotate.

4. A multimedia classroom projector according to claim 3, characterized in that: The first driving member comprises a first motor (32), the first motor (32) is fixedly mounted in the connecting plate (3), the output shaft of the first motor (32) is fixedly connected to the rotating plate (31), and the second driving member comprises a second motor (6), the second motor (6) drives the rotating shaft (7) to rotate via a reduction gear set.

5. A multimedia classroom projector according to claim 4, characterized in that: The reduction gear set comprises an input gear (61) and an output gear (71); the input gear (61) is coaxially fixedly connected to the output shaft of the second motor (6); the output gear (71) is coaxially fixedly connected to the rotating shaft (7); the input gear (61) and the output gear (71) are meshed; the diameter of the input gear (61) is smaller than that of the output gear (71); and the rotating shaft (7) is fixedly connected to the projector body (11).

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