Hidden electric projection frame

Abstract

The utility model discloses a hidden type electric projection frame which comprises a connecting frame, a driving adjusting assembly is arranged on the connecting frame, a fixed installation assembly used for installing a projector is arranged on the driving adjusting assembly, the driving adjusting assembly comprises a fixed shell, the fixed shell is installed on the right side of the connecting frame, and the fixed shell is installed on the right side of the connecting frame. A permanent magnet synchronous motor is installed on the back face of the inner wall of the fixing shell, and a winding roller is installed on the surface of an output shaft of the permanent magnet synchronous motor. Through mutual cooperation of the fixed shell, the permanent magnet synchronous motor, the winding roller, the transmission belt, the scissor-type alloy guide frame, the mounting frame, the mounting plate and the fastening bolt, side arrangement of the motor is combined with transmission of the transmission belt, the thickness of the projection frame is reduced, the occupied space after the projection frame is mounted is reduced, and the hidden guide frame and the frame design are adopted, so that the projection frame is convenient to use. In the closed state, the space occupied by the projection frame is further reduced, the three-side shear fork type alloy guide frame is matched with the transmission belt, stable lifting is achieved, and the stability of a projection picture is ensured.

Description

Technical Field

[0001] This utility model relates to the field of electric projector stand technology, specifically a concealed electric projector stand. Background Technology

[0002] A projector, also known as a projector, is a device that projects images or videos onto a screen. It can be connected to computers, VCD players, DVD players, Blu-ray players, game consoles, DV cameras, etc., through various interfaces to play corresponding video signals. Projectors are currently widely used in homes, offices, schools, and entertainment venues. Depending on their operating method, there are different types, such as CRT, LCD, and DLP. The projection height of a projector can be adjusted using an electric projector stand.

[0003] Traditional electric projector stands require the motor and transmission mechanism to be integrated at the top of the stand, which results in a large installation space and makes them difficult to fit low ceilings. Some projector stands driven by motors are prone to center of gravity shift during lifting, causing shaking or jamming and affecting the projection effect. To address this, we offer a concealed electric projector stand. Utility Model Content

[0004] The purpose of this invention is to provide a concealed electric projector stand to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a concealed electric projector stand, including a connecting frame, a drive adjustment assembly on the connecting frame, the drive adjustment assembly including a fixed shell, the fixed shell being installed on the right side of the connecting frame, a permanent magnet synchronous motor being installed on the back of the inner wall of the fixed shell, a winding roller being installed on the surface of the output shaft of the permanent magnet synchronous motor, a transmission belt being wound on the surface of the winding roller, the drive adjustment assembly further including three scissor-type alloy guide frames and a mounting frame, the mounting frame being disposed below the connecting frame, the inner wall of the mounting frame being movably connected to the bottom of the connecting frame through the three scissor-type alloy guide frames, and a fixed mounting assembly for mounting a projector being provided on the drive adjustment assembly.

[0006] Preferably, the end of the transmission belt away from the winding roller passes through the guide wheel on the fixed shell and the connecting frame in sequence and extends to the outside of the guide wheel, and the bottom end of the transmission belt is fixedly connected to the top of the mounting frame.

[0007] Preferably, the fixed installation assembly includes a mounting plate, which is disposed on the top of the inner wall of the mounting frame. The top of the mounting frame is provided with four fastening bolts that are threadedly connected to the mounting plate, and the bottom of the mounting plate is provided with a plurality of mounting holes for fixing the projector.

[0008] Preferably, a support base plate is provided below the mounting bracket, and connectors are installed at the four corners of the top of the support base plate. The connectors are connected to the mounting bracket by screws.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] This utility model utilizes the cooperation of a fixed shell, a permanent magnet synchronous motor, a winding roller, a transmission belt, a scissor-type alloy guide frame, a mounting frame, a mounting plate, and fastening bolts to combine the side-mounted motor with the transmission belt drive, thereby compressing the thickness of the projection frame and reducing the space occupied after installation. The concealed guide frame and frame design further reduces the space occupied by the projection frame when closed. The three-sided scissor-type alloy guide frame, in conjunction with the transmission belt, achieves smooth lifting and ensuring a stable projected image. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is an exploded view of the three-dimensional structure of this utility model;

[0013] Figure 3 This is a three-dimensional structural diagram of the permanent magnet synchronous motor, winding roller, and transmission belt of this utility model;

[0014] Figure 4 This is a structural schematic diagram of the front view of the projector stand in the closed state.

[0015] In the diagram: 1 connecting frame, 2 drive adjustment assembly, 21 fixed shell, 22 permanent magnet synchronous motor, 23 winding roller, 24 transmission belt, 25 scissor-type alloy guide frame, 26 mounting frame, 3 fixed mounting assembly, 31 mounting plate, 32 fastening bolt, 4 support base plate, 5 connector, 6 connecting hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 A concealed electric projector stand includes a connecting frame 1, a drive adjustment component 2 on the connecting frame 1, and a fixing mounting component 3 for mounting a projector on the drive adjustment component 2.

[0018] Four connection holes 6 are provided at the four corners of the top of the connecting frame 1. By providing connection holes 6, the connecting frame 1 can be fixed to the roof with screws.

[0019] The drive adjustment assembly 2 includes a fixed housing 21, which is mounted on the right side of the connecting frame 1. Several heat dissipation vents are provided at the bottom of the fixed housing 21 to ensure effective heat dissipation within the housing. A permanent magnet synchronous motor 22 is fixedly connected to the back of the inner wall of the fixed housing 21. The permanent magnet synchronous motor 22 is a forward and reverse motor with a self-locking function. The permanent magnet synchronous motor 22 is electrically connected to an external controller. The permanent magnet synchronous motor 22 is connected to an external power source via wires passing through the fixed housing 21. The permanent magnet synchronous motor 22 can be square or round; no specific shape is required. A winding roller 23 is fixedly connected to the surface of the output shaft of the permanent magnet synchronous motor 22, and a transmission winding is wound on the surface of the winding roller 23. The drive adjustment assembly 2 also includes three scissor-type alloy guide frames 25 and a mounting frame 26. The mounting frame 26 is located below the connecting frame 1. The inner wall of the mounting frame 26 is movably connected to the bottom of the connecting frame 1 through the three scissor-type alloy guide frames 25. The end of the drive belt 24 away from the winding roller 23 passes through the fixed shell 21 and the guide wheel on the connecting frame 1 in sequence and extends to the outside of the guide wheel. The bottom end of the drive belt 24 is fixedly connected to the top of the mounting frame 26. When the scissor-type alloy guide frames 25 are in the closed state, the scissor-type alloy guide frames 25 are all located inside the mounting frame 26, which has a hidden effect. The scissor-type alloy guide frames 25 have a telescopic effect through the rotating shaft.

[0020] The fixed mounting assembly 3 includes a mounting plate 31, which is disposed on the top of the inner wall of the mounting frame 26. The top of the mounting plate 31 is in contact with the top of the inner wall of the mounting frame 26. The top of the mounting frame 26 is provided with four fastening bolts 32 that are threadedly connected to the mounting plate 31. The bottom of the mounting plate 31 is provided with several mounting holes for fixing the projector. The projector can be fixed to the bottom of the mounting plate 31 through the mounting holes by means of screws.

[0021] A support base plate 4 is provided below the mounting bracket 26. Connectors 5 are installed at the four corners of the top of the support base plate 4. The connectors 5 are connected to the mounting bracket 26 by screws. The distance between the mounting bracket 26 and the support base plate 4 can be adjusted by adjusting the position of the screws fixed between the connectors 5 and the mounting bracket 26, so as to accommodate projectors of different heights. By setting the support base plate 4, the projector can be hidden inside the mounting bracket 26, and at the same time, it also has the effect of protecting the projector and preventing the projector from falling to the ground due to loose screws.

[0022] Through the cooperation of the fixed shell 21, permanent magnet synchronous motor 22, winding roller 23, transmission belt 24, scissor-type alloy guide frame 25, mounting bracket 26, mounting plate 31 and fastening bolts 32, the side-mounted motor and the transmission belt 24 are combined to compress the thickness of the projection frame and reduce the space occupied after the projection frame is installed. The hidden guide frame and frame design further reduces the space occupied by the projection frame in the closed state. The three-sided scissor-type alloy guide frame 25, together with the transmission belt 24, achieves smooth lifting and lowering, ensuring the stability of the projected image.

[0023] In use, the projector is installed on the bottom of the mounting plate 31 with screws, with the projection port of the projector facing forward. Then, the permanent magnet synchronous motor 22 is started. The permanent magnet synchronous motor 22 drives the winding roller 23 to rotate through the output shaft, which loosens the transmission belt 24. Through the weight of the mounting frame 26 and the projector itself, the mounting frame 26 slowly descends. The mounting frame 26 stretches the scissor-type alloy guide frame 25, causing the scissor-type alloy guide frame 25 to extend. The mounting frame 26 then moves the projector downward to the appropriate position.

[0024] In summary, this concealed electric projection stand solves the problems mentioned in the background art through the cooperation of the fixed shell 21, permanent magnet synchronous motor 22, winding roller 23, transmission belt 24, scissor-type alloy guide frame 25, mounting frame 26, mounting plate 31 and fastening bolts 32.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concealed electric projector stand, characterized in that: The device includes a connecting frame (1), on which a drive adjustment assembly (2) is provided. The drive adjustment assembly (2) includes a fixed shell (21), which is installed on the right side of the connecting frame (1). A permanent magnet synchronous motor (22) is installed on the back of the inner wall of the fixed shell (21). A winding roller (23) is installed on the surface of the output shaft of the permanent magnet synchronous motor (22). A transmission belt (24) is wound on the surface of the winding roller (23). The drive adjustment assembly (2) also includes three scissor-type alloy guide frames (25) and a mounting frame (26). The mounting frame (26) is located below the connecting frame (1). The inner wall of the mounting frame (26) is movably connected to the bottom of the connecting frame (1) through the three scissor-type alloy guide frames (25). The drive adjustment assembly (2) is provided with a fixed mounting assembly (3) for mounting a projector.

2. The hidden electric projection bracket according to claim 1, characterized in that: The end of the transmission belt (24) away from the winding roller (23) passes through the guide wheel on the fixed shell (21) and the connecting frame (1) in sequence and extends to the outside of the guide wheel. The bottom end of the transmission belt (24) is fixedly connected to the top of the mounting frame (26).

3. The motorized projection screen of claim 2, wherein: The fixed installation assembly (3) includes a mounting plate (31), which is located on the top of the inner wall of the mounting frame (26). The top of the mounting frame (26) is provided with four fastening bolts (32) that are threadedly connected to the mounting plate (31). The bottom of the mounting plate (31) is provided with several mounting holes for fixing the projector.

4. The hidden electric projection bracket according to claim 3, characterized in that: A support base plate (4) is provided below the mounting bracket (26). Connectors (5) are installed at the four corners of the top of the support base plate (4). The connectors (5) are connected to the mounting bracket (26) by screws.

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