Projection device with adjustable angle

Abstract

The angle-adjustable projection device comprises a bracket and a projector, the projector is installed on the upper side of the bracket, supporting plates are arranged on the two sides of the bracket, a limiting mechanism for limiting the angle of the bracket and the supporting plates is arranged between the bracket and the supporting plates, the upper end face of the bracket is rotationally connected with a rotating plate, and the rotating plate is arranged on the bracket. A rotating plate is arranged on the bracket, a positioning pin for fixing the position of the rotating plate is arranged between the rotating plate and the bracket, mounting plates are arranged on the front side and the rear side of the rotating plate respectively, and storage grooves are formed in the side walls of the two ends of the rotating plate respectively. According to the projector support, the loss of the adjusting structure due to the gravity effect can be reduced, the overall service life of the device is further prolonged, the overall installation range of the support can be adjusted according to different specifications and sizes of different projectors in the using process, and therefore the overall application range of the device is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field related to multimedia teaching projection, in particular to a projection device with adjustable angle. 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 a computer through different interfaces to play corresponding video signals. Projectors are widely used in homes, offices, schools and entertainment venues. Teaching content can be projected through the projection device during education and training. When the projection device is in use, the projection device is usually connected to a computer device, and the projected content is then projected onto the screen. During the projection process, in order to ensure the accuracy of the image projection, an adjustable bracket is usually set on the lower side of the projector. However, the existing bracket adjustment usually uses a knob with damping. After long-term use, this method may cause wear and tear, resulting in slippage of the rotating connection, thereby affecting the accuracy of subsequent angle adjustment.

[0003] Therefore, we propose an angle-adjustable projection device to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a projection device with adjustable angle.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An angle-adjustable projection device comprises a bracket and a projector, wherein the projector is mounted on the upper side of the bracket, support plates are arranged on both sides of the bracket, a limiting mechanism for limiting the angle of the bracket is arranged between the bracket and the support plates, a rotating plate is rotatably connected to the upper end surface of the bracket, a positioning pin for fixing the position of the rotating plate is arranged between the rotating plate and the bracket, mounting plates are respectively arranged on the front and rear sides of the rotating plate, and storage grooves are respectively opened on the side walls at both ends of the rotating plate.

[0007] Preferably, the bracket is of a hollow design as a whole, and the side walls at both ends of the bracket are rotatably connected to the support plates on both sides respectively.

[0008] Preferably, an arc-shaped guide groove is opened on the side wall of the support plate, and a guide block is connected to the side wall of the bracket corresponding to the position of the guide groove, and the guide block extends into the guide groove to cooperate with it.

[0009] Preferably, the limiting mechanism includes a slot opened on the side wall of the outer end of the guide block, the inner wall of the slot is connected to a limiting spring, the outer end of the limiting spring is connected to the limiting block, a group of limiting grooves are opened on the side wall of the guide groove, and the limiting block extends into the limiting groove to cooperate with the limiting groove.

[0010] Preferably, a turntable is connected to the lower end surface of the rotating plate.

[0011] Preferably, a positioning spring is connected to the lower end surface of the bracket, the lower end of the positioning spring is connected to the positioning pin, a group of positioning holes are opened on the side wall of the turntable, and the positioning pin extends into the positioning holes to cooperate with them.

[0012] Preferably, a group of mounting holes are opened on the side wall of the mounting plate, and the mounting plate extends into the receiving groove and a return spring is connected between the mounting plate and the inner wall thereof.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] When the utility model is in use, the angle of the bracket can be rotated through the cooperation of the set guide groove and the guide block, thereby changing the illumination angle of the upper projector to meet different projection needs, and after the angle adjustment is completed, the limit spring drives the limit block to enter the limit groove, and the rotation angle of the bracket can be limited and fixed, so that the bracket and the projector maintain good stability, and the rotating plate can be rotated on the bracket at the same time, thereby driving the projector to rotate horizontally, and the corner inclination design of the positioning pin and the positioning spring are used in the adjustment process, so that the position of the rotating plate can be quickly positioned after the adjustment is completed. Compared with the existing projection angle adjustment method, while meeting different angle adjustment methods, it can reduce the loss of the adjustment structure due to gravity, thereby extending the service life of the entire device, and during use, according to the different specifications of different projectors, the overall installation range of the bracket can be adjusted, thereby expanding the overall application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the bracket and the rotating plate of the utility model;

[0017] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0019] Figure 5It is a schematic diagram of the rotating plate and its auxiliary structure of the utility model.

[0020] In the figure: 1-bracket, 2-support plate, 201-guide groove, 202-guide block, 3-limiting mechanism, 301-slot, 302-limiting spring, 303-limiting block, 304-limiting groove, 4-rotating plate, 401-turntable, 5-locating pin, 501-locating spring, 502-locating pin, 6-mounting plate, 601-mounting hole, 602-reset spring, 7-storage groove. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-5, an angle-adjustable projection device comprises a bracket 1 and a projector, the projector is installed on the upper side of the bracket 1, support plates 2 are arranged on both sides of the bracket 1, the support plates 2 are L-shaped as a whole and the lower end surfaces are covered with a friction layer to ensure the overall stability of the device, the bracket 1 is hollow-out as a whole, the side walls at both ends of the bracket 1 are rotatably connected to the support plates 2 on both sides respectively, an arc-shaped guide groove 201 is opened on the side wall of the support plate 2, a guide block 202 is connected to the side wall of the bracket 1 corresponding to the guide groove 201, the guide block 202 extends into the guide groove 201 to cooperate with it, and the cooperation between the two facilitates the rotation of the bracket 1.

[0026] A limiting mechanism 3 for limiting the angle of the bracket 1 and the support plate 2 is arranged between the bracket 1 and the support plate 2. The limiting mechanism 3 includes a slot 301 opened on the side wall of the outer end of the guide block 202. The inner wall of the slot 301 is connected to a limiting spring 302. The outer end of the limiting spring 302 is connected to a limiting block 303. A group of limiting slots 304 are opened on the side wall of the guide slot 201. The limiting block 303 extends into the limiting slot 304 to cooperate with it. After the angle adjustment is completed, the limiting spring 302 drives the limiting block 303 to enter the limiting slot 304, so that the rotation angle of the bracket 1 can be limited and fixed, so that the bracket 1 and the projector maintain good stability.

[0027] A rotating plate 4 is rotatably connected to the upper end surface of the bracket 1, and a turntable 401 is connected to the lower end surface of the rotating plate 4. A positioning pin 5 for fixing its position is arranged between the rotating plate 4 and the bracket 1, and a positioning spring 501 is connected to the lower end surface of the bracket 1. The lower end of the positioning spring 501 is connected to the positioning pin 5, and a group of positioning holes 502 are opened on the side wall of the turntable 401. The positioning pin 5 extends into the positioning hole 502 to cooperate with the positioning hole. The corner of the side wall of the positioning pin 5 is inclined. By utilizing the inclined corner design of the positioning pin 5 and the positioning spring 501, the position of the rotating plate 4 can be quickly positioned after the adjustment is completed.

[0028] Mounting plates 6 are respectively provided on the front and rear sides of the rotating plate 4, and receiving grooves 7 are respectively provided on the side walls at both ends of the rotating plate. A group of mounting holes 601 are provided on the side walls of the mounting plate 6, which cooperate with external mounting parts to install the projector on the rotating plate 4 and the mounting plate 6. The mounting plate 6 extends into the receiving groove 7 and a reset spring 602 is connected between the mounting plate 6 and the inner wall thereof. By utilizing the retractable characteristics of the positioning spring 602, the overall installation range of the bracket can be adjusted according to the specifications of different projectors.

[0029] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

[0030] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Claims

1. An angle-adjustable projection device, comprising a bracket (1) and a projector, wherein the projector is mounted on the upper side of the bracket (1), characterized in that: Support plates (2) are arranged on both sides of the bracket (1), a limiting mechanism (3) for limiting the angle of the bracket (1) and the support plate (2) is arranged between the bracket (1) and the support plate (2), a rotating plate (4) is rotatably connected on the upper end surface of the bracket (1), a positioning pin (5) for fixing the position of the rotating plate (4) and the bracket (1) is arranged between the rotating plate (4) and the bracket (1), mounting plates (6) are respectively arranged on the front and rear sides of the rotating plate (4), and storage grooves (7) are respectively opened on the side walls at both ends of the rotating plate.

2. The angle-adjustable projection device according to claim 1, characterized in that: The bracket (1) is of hollow design as a whole, and the side walls at both ends of the bracket (1) are rotatably connected to the support plates (2) on both sides respectively.

3. The angle-adjustable projection device according to claim 2, characterized in that: An arc-shaped guide groove (201) is provided on the side wall of the support plate (2), and a guide block (202) is connected to the side wall of the bracket (1) corresponding to the guide groove (201), and the guide block (202) extends into the guide groove (201) to cooperate therewith.

4. The angle-adjustable projection device according to claim 3, characterized in that: The limiting mechanism (3) comprises a slot (301) formed on the side wall of the outer end of the guide block (202); the inner wall of the slot (301) is connected to a limiting spring (302); the outer end of the limiting spring (302) is connected to a limiting block (303); a group of limiting slots (304) are formed on the side wall of the guide slot (201); and the limiting block (303) extends into the limiting slots (304) to cooperate with the limiting slots (304).

5. The angle-adjustable projection device according to claim 1, characterized in that: A rotating disk (401) is connected to the lower end surface of the rotating plate (4).

6. The angle-adjustable projection device according to claim 5, characterized in that: A positioning spring (501) is connected to the lower end surface of the bracket (1), and the lower end of the positioning spring (501) is connected to the positioning pin (5). A group of positioning holes (502) are opened on the side wall of the turntable (401), and the positioning pin (5) extends into the positioning holes (502) to cooperate with them.

7. The angle-adjustable projection device according to claim 1, characterized in that: A group of mounting holes (601) are provided on the side wall of the mounting plate (6); the mounting plate (6) extends into the receiving groove (7) and a return spring (602) is connected between the mounting plate (6) and the inner wall thereof.

Images