Projection equipment capable of being electrically lifted and adjusted

Abstract

The utility model discloses a projection device capable of electric lifting adjustment, which comprises a projector main shell, the front surface of the projector main shell is provided with a projection lens, the top of the projector main shell is fixedly provided with a pair of connecting seats A, and a connecting rod is rotatably arranged between the pair of connecting seats A through a connecting shaft. A mounting top plate used for being fixed to a wall is arranged above the connecting rod, lifting adjustment is conducted between the mounting top plate and the connecting rod through an electric lead screw assembly, and angle adjustment is conducted between the front end of the connecting rod and the projector main shell through an air cylinder adjusting assembly. According to the technical scheme of the utility model, the projector is driven by the electric lead screw to ascend and descend, so that the height can be adjusted conveniently. In addition, an adjusting air cylinder used for adjusting the angle is designed, so that the angle of the projector can be adjusted, the projector can be accurately aligned with the projection curtain in cooperation with height adjustment, and the projection effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of projection equipment, and in particular relates to a projection equipment capable of electrically lifting and lowering. Background Art

[0002] A projector is a device that can project images or videos onto a projection screen. The projector includes a projector housing, a circuit board, and a projection lens. In order to save desktop space, current projectors are generally hung on the ceiling of a room through a fixed bracket. However, this fixed bracket causes the height and angle of the projection device to be fixed and cannot be flexibly adjusted. Therefore, the utility model proposes a projection device that can be electrically raised and lowered. Utility Model Content

[0003] The purpose of the utility model is to provide a projection device that can be electrically lifted and lowered to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a projection device that can be electrically raised and lowered, comprising a projector main shell, a projection lens is arranged on the front surface of the projector main shell, a pair of connecting seats A are fixedly arranged on the top of the projector main shell, a connecting rod is rotatably arranged between the pair of connecting seats A via a connecting shaft, a mounting top plate for fixing to a wall is arranged above the connecting rod, the mounting top plate and the connecting rod are raised and lowered by an electric lead screw assembly, and the angle between the front end of the connecting rod and the projector main shell is adjusted by a cylinder adjustment assembly.

[0005] Preferably, the electric lead screw assembly includes a mounting slide, one end of the mounting slide is fixedly mounted on the bottom of the mounting top plate, the mounting slide is provided with a longitudinally slidable limiting sleeve, the limiting sleeve is fixedly connected to the top of the connecting rod, a mounting groove is provided on the mounting slide, a threaded screw is rotatably arranged in the mounting groove, a lead screw sleeve is provided on the threaded screw, one side of the lead screw sleeve is fixedly connected to the limiting sleeve, a servo motor group is provided at one end of the mounting slide, and the servo motor group is transmission-connected to one end of the threaded screw.

[0006] Preferably, the servo motor group consists of a servo motor and a reduction box, the output shaft of the servo motor is drivingly connected to the input end of the reduction box, and the output end of the reduction box is drivingly connected to the threaded screw.

[0007] Preferably, the cylinder adjustment assembly includes an adjusting cylinder, a pair of connecting seats B fixedly mounted on a connecting rod, and a pair of connecting seats C fixedly mounted on a main housing of the projector, one end of the adjusting cylinder is provided with a retractable cylinder telescopic rod, the front end of the cylinder telescopic rod is rotatably connected to a pair of connecting seats C, and the other end of the adjusting cylinder is fixedly provided with a fixed seat, which is rotatably connected to the connecting seat B.

[0008] Preferably, fixing holes for installing screws are distributed around the mounting top plate.

[0009] Preferably, bearings are respectively provided at the connection points between the two ends of the mounting groove and the threaded screw.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is designed to drive the projector to move up and down through an electric screw, which is convenient for height adjustment; in addition, an adjusting cylinder for adjusting the angle is designed, so that the projector can be adjusted in angle, and combined with the height adjustment, it can be ensured that the projector can be accurately aligned with the projection screen, thereby ensuring the projection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view structural schematic diagram of the utility model;

[0012] Figure 2 It is a side view structural schematic diagram of the utility model;

[0013] Figure 3 It is a side cross-sectional structural schematic diagram of the utility model;

[0014] In the figure: 1. Main housing of projector; 2. Projection lens; 3. Connecting seat A; 4. Connecting shaft; 5. Adjusting cylinder; 6. Cylinder telescopic rod; 7. Mounting slide; 8. Mounting top plate; 9. Limiting sleeve; 10. Connecting rod; 11. Connecting seat B; 12. Fixed seat; 13. Connecting seat C; 14. Mounting groove; 15. Threaded screw; 16. Screw sleeve; 17. Servo motor unit. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Please refer to Figure 1-Figure 3A projection device that can be electrically raised and lowered comprises a projector main housing 1, a projection lens 2 is arranged on the front surface of the projector main housing 1, a pair of connecting seats A3 are fixedly arranged on the top of the projector main housing 1, a connecting rod 10 is rotatably arranged between the pair of connecting seats A3 via a connecting shaft 4, a mounting top plate 8 for fixing on a wall is arranged above the connecting rod 10, the mounting top plate 8 and the connecting rod 10 are raised and lowered by an electric lead screw assembly, and the angle between the front end of the connecting rod 10 and the projector main housing 1 is adjusted by a cylinder adjustment assembly. In this embodiment, preferably, the electric lead screw assembly includes a mounting slide 7, one end of which is fixedly mounted on the bottom of the mounting top plate 8, a longitudinally slidable limiting sleeve 9 is sleeved on the mounting slide 7, and the limiting sleeve 9 is fixedly connected to the top of the connecting rod 10, a mounting groove 14 is provided on the mounting slide 7, a threaded screw 15 is rotatably arranged in the mounting groove 14, a screw sleeve 16 is arranged on the threaded screw 15, and one side of the screw sleeve 16 is fixedly connected to the limiting sleeve 9, and a servo motor group 17 is arranged at one end of the mounting slide 7, and the servo motor group 17 is transmission-connected to one end of the threaded screw 15; the threaded screw 15 is driven to rotate by the servo motor group 17, so that the screw sleeve 16 can move up and down, thereby driving the limiting sleeve 9 to move up and down, so that the connecting rod 10 synchronously drives the projector to move up and down. In this embodiment, preferably, the servo motor group 17 is composed of a servo motor and a reduction box, the output shaft of the servo motor is transmission-connected to the input end of the reduction box, and the output end of the reduction box is transmission-connected to the threaded screw 15, in order to ensure a suitable rotation speed. In this embodiment, preferably, the cylinder adjustment assembly includes an adjustment cylinder 5, a pair of connection seats B11 fixedly mounted on the connection rod 10, and a pair of connection seats C13 fixedly mounted on the main housing 1 of the projector. A retractable cylinder telescopic rod 6 is provided at one end of the adjustment cylinder 5, and the front end of the cylinder telescopic rod 6 is rotationally connected to a pair of connection seats C13. A fixed seat 12 is fixedly provided at the other end of the adjustment cylinder 5, and the fixed seat 12 is rotationally connected to the connection seat B11. The cylinder telescopic rod 6 is driven to telescopically move by the adjustment cylinder 5, thereby driving the projector to adjust the angle. In this embodiment, preferably, fixing holes for installing screws are distributed around the mounting top plate 8 for easy installation. In this embodiment, preferably, bearings are provided at the connection between the two ends of the mounting groove 14 and the threaded screw 15, respectively, to ensure the smooth rotation of the threaded screw 15.

[0017] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A projection device that can be electrically raised and lowered, comprising a projector main housing (1), characterized in that: A projection lens (2) is arranged on the front surface of the main housing (1) of the projector, a pair of connecting seats A (3) are fixedly arranged on the top of the main housing (1) of the projector, a connecting rod (10) is rotatably arranged between the pair of connecting seats A (3) via a connecting shaft (4), a mounting top plate (8) for fixing on a wall is arranged above the connecting rod (10), the mounting top plate (8) and the connecting rod (10) are raised and lowered by an electric lead screw assembly, and the angle between the front end of the connecting rod (10) and the main housing (1) of the projector is adjusted by a cylinder adjustment assembly.

2. The projection device capable of electrically lifting and lowering according to claim 1, characterized in that: The electric lead screw assembly comprises a mounting slide (7), one end of the mounting slide (7) is fixedly mounted on the bottom of the mounting top plate (8), a longitudinally slidable limiting sleeve (9) is sleeved on the mounting slide (7), the limiting sleeve (9) is fixedly connected to the top of a connecting rod (10), a mounting groove (14) is provided on the mounting slide (7), a threaded screw (15) is rotatably arranged in the mounting groove (14), a lead screw sleeve (16) is arranged on the threaded screw (15), one side of the lead screw sleeve (16) is fixedly connected to the limiting sleeve (9), a servo motor group (17) is arranged at one end of the mounting slide (7), and the servo motor group (17) is transmission-connected to one end of the threaded screw (15).

3. The electrically adjustable projection device according to claim 2, characterized in that: The servo motor group (17) is composed of a servo motor and a reduction box. The output shaft of the servo motor is drivingly connected to the input end of the reduction box, and the output end of the reduction box is drivingly connected to the threaded screw (15).

4. The electrically adjustable projection device according to claim 1, characterized in that: The cylinder adjustment assembly comprises an adjustment cylinder (5), a pair of connection seats B (11) fixedly mounted on a connection rod (10), and a pair of connection seats C (13) fixedly mounted on a main housing (1) of a projector, one end of the adjustment cylinder (5) being provided with a telescopic cylinder telescopic rod (6), the front end of the cylinder telescopic rod (6) being rotatably connected to the pair of connection seats C (13), and the other end of the adjustment cylinder (5) being fixedly provided with a fixed seat (12), the fixed seat (12) being rotatably connected to the connection seat B (11).

5. The electrically adjustable projection device according to claim 1, characterized in that: The mounting top plate (8) is provided with fixing holes for mounting screws distributed around the periphery.

6. The electrically adjustable projection device according to claim 2, characterized in that: Bearings are respectively provided at the connection points between the two ends of the installation groove (14) and the threaded screw rod (15).

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