Lifting type projection equipment

Abstract

The utility model relates to the technical field of projection equipment, in particular to lifting type projection equipment, which comprises an outer frame, a first box cover and a second box cover are respectively mounted at the top of the outer frame, a placement frame is mounted in the outer frame, a projector is mounted in the placement frame, a double-head motor is mounted at the bottom end of the inner side of the outer frame, and the double-head motor is mounted at the bottom end of the inner side of the outer frame. Threaded rods are symmetrically installed outside the double-end motor, driving bevel gears are symmetrically installed at the ends, away from the double-end motor, of the threaded rods, driven bevel gears are installed outside the driving bevel gears, first connecting rods are installed outside the threaded rods, and lead screws are installed inside the driven bevel gears. Compared with the existing lifting type projection equipment, the lifting type projection equipment disclosed by the utility model has the advantages that through the design of the threaded rod and the screw rod, the lifting type projection equipment can be quickly unfolded and folded, and the dustproof performance and the portability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of projection equipment, in particular to a lifting type projection equipment. Background Art

[0002] With the progress of society, English classroom teaching is equipped with projection equipment to assist teaching. A projector is an optical instrument that uses optical elements to magnify the outline of a workpiece and project it onto a screen. It can use transmitted light for contour measurement, and can also use reflected light to measure the surface shape of blind holes and observe the surface of parts.

[0003] At present, in the existing technology, the projector is hung on the ceiling and projected onto the screen above the blackboard. This operation is convenient and quick. However, placing the projector on the ceiling for a long time will cause dust to accumulate on the outside of the projector, resulting in blurred images projected by the lens. The projector needs to be wiped, and a ladder is required for the operator to wipe it. In addition, a fixed projector is not convenient to carry. When there is a mobile public English class, each classroom needs to be equipped with a projector, which greatly increases the cost.

[0004] Therefore, it is particularly important to improve the existing lifting projection equipment and design a new lifting projection equipment to solve the above technical defects and improve the practicality of the overall lifting projection equipment. Utility Model Content

[0005] The purpose of the utility model is to provide a lifting projection device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A lifting projection device comprises an outer frame, a first box cover and a second box cover are respectively installed on the top of the outer frame, a placement frame is installed inside the outer frame, a projector is installed inside the placement frame, a double-headed motor is installed at the bottom end of the inner side of the outer frame, threaded rods are symmetrically installed on the outside of the double-headed motor, a driving bevel gear is symmetrically installed on one end of the threaded rod away from the double-headed motor, a driven bevel gear is installed on the outside of the driving bevel gear, a first connecting rod is installed on the outside of the threaded rod, a lead screw is installed inside the driven bevel gear, and a second connecting rod is installed on the outside of the lead screw.

[0008] As a preferred solution of the utility model, a first movable sleeve is installed at one end of the first connecting rod close to the threaded rod, and one end of the first connecting rod away from the threaded rod is rotatably connected to the bottom of the placement frame.

[0009] As a preferred solution of the utility model, a second movable sleeve is installed at one end of the second connecting rod close to the screw rod, and one end of the second connecting rod away from the screw rod is rotatably connected to the bottom of the first box cover and the second box cover.

[0010] As a preferred solution of the utility model, sliders are installed at the bottom of the first box cover and the second box cover, a sliding groove is provided at the top of the outer frame at a position corresponding to the slider, a clamping block is installed on the side of the first box cover close to the second box cover, and a clamping groove is provided inside the second box cover at a position corresponding to the clamping block.

[0011] As a preferred solution of the utility model, a reinforcement component is installed on the outside of the outer frame, and the reinforcement component consists of a first reinforcement bar and a second reinforcement bar. The first reinforcement bar and the second reinforcement bar are connected by a snap-fit ​​connection.

[0012] As a preferred solution of the utility model, a chassis is installed at the bottom end of the inner side of the placement frame, a main rod is installed inside the chassis, a protection frame is installed on the top of the main rod, and a telescopic rod is installed between the outside of the main rod and the protection frame.

[0013] As a preferred solution of the utility model, connecting blocks are symmetrically installed on the outside of the placement frame, connecting grooves are opened at positions corresponding to the connecting blocks on the inner wall of the outer frame, and ears are installed on the outside of the chassis, and the chassis is fixedly connected to the placement frame through the ears.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, the threaded rod is rotated by starting the double-headed motor, so that the first movable sleeve moves in opposite directions outside the threaded rod, so that the first connecting rod is unfolded to both sides, so that the placement frame is lifted, and the active bevel gear and the driven bevel gear are driven to rotate by the threaded rod, so that the screw rod is rotated, so that the second movable sleeve slides outside the screw rod, so as to drive the second connecting rod to rise and fall, so that the second connecting rod drives the first box cover and the second box cover to unfold, so that the projector is presented outside the outer frame, and the telescopic rod is driven to move by pressing the projector, so as to complete the angle adjustment of the projector, and the projector is sealed by the coordinated use of the card block and the card slot, so as to prevent dust from sticking, and convenient to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the threaded rod of the utility model;

[0018] Figure 3It is a schematic diagram of the internal structure of the main rod of the utility model.

[0019] In the figure: 1, outer frame; 101, reinforcement component; 2, first box cover; 3, second box cover; 4, placement frame; 5, projector; 6, double-headed motor; 7, threaded rod; 8, active bevel gear; 9, driven bevel gear; 10, first connecting rod; 11, screw rod; 12, second connecting rod; 13, first movable sleeve; 14, second movable sleeve; 15, chassis; 16, main rod; 17, protection frame; 18, telescopic rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Example:

[0022] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0023] A lifting projection device comprises an outer frame 1, a first box cover 2 and a second box cover 3 are respectively installed on the top of the outer frame 1, a placement frame 4 is installed inside the outer frame 1, a projector 5 is installed inside the placement frame 4, a double-headed motor 6 is installed at the bottom end of the inner side of the outer frame 1, a threaded rod 7 is symmetrically installed outside the double-headed motor 6, a driving bevel gear 8 is symmetrically installed at one end of the threaded rod 7 away from the double-headed motor 6, a driven bevel gear 9 is installed outside the driving bevel gear 8, a first connecting rod 10 is installed outside the threaded rod 7, and a driven bevel gear 9 is installed inside There is a screw rod 11, and a second connecting rod 12 is installed outside the screw rod 11. When the projector 5 needs to be used, the double-headed motor 6 is started to rotate the threaded rod 7, so that the first connecting rod 10 is unfolded to both sides, so that the placement frame 4 is lifted, and the threaded rod 7 drives the active bevel gear 8 and the driven bevel gear 9 to rotate, so that the screw rod 11 is rotated, so that the second connecting rod 12 is swung, so that the first box cover 2 and the second box cover 3 are unfolded, so that the projector 5 is completely presented outside the outer frame 1.

[0024] For further information, see Figure 2 In this embodiment, a first movable sleeve 13 is installed at one end of the first connecting rod 10 close to the threaded rod 7, and the end of the first connecting rod 10 away from the threaded rod 7 is rotatably connected to the bottom of the placement frame 4. The first movable sleeve 13 moves in the opposite direction outside the threaded rod 7, so that the first connecting rod 10 is unfolded and the placement frame 4 is raised.

[0025] Among them, see Figure 2 In this embodiment, a second movable sleeve 14 is installed at one end of the second connecting rod 12 close to the screw rod 11, and the other end of the second connecting rod 12 away from the screw rod 11 is rotatably connected to the bottom of the first box cover 2 and the second box cover 3. The second movable sleeve 14 slides on the outside of the screw rod 11, thereby driving the second connecting rod 12 to rise and fall, so that the second connecting rod 12 drives the first box cover 2 and the second box cover 3 to unfold.

[0026] Second, see Figure 1 In this embodiment, a slider is installed at the bottom of the first box cover 2 and the second box cover 3, a slide groove is provided at the top of the outer frame 1 at a position corresponding to the slider, a card block is installed on the side of the first box cover 2 close to the second box cover 3, and a card groove is provided at a position corresponding to the card block inside the second box cover 3. The slide groove allows the first box cover 2 and the second box cover 3 to slide more smoothly when unfolded. By using the card block and the card groove in coordination, the projector 5 is sealed to prevent dust from sticking to it and facilitate carrying.

[0027] Furthermore, please see Figure 1 In this embodiment, a reinforcement component 101 is installed outside the outer frame 1. The reinforcement component 101 consists of a first reinforcement bar and a second reinforcement bar. The first reinforcement bar and the second reinforcement bar are connected by a snap-fit ​​connection.

[0028] For further information, see Figure 2 and Figure 3 In this embodiment, a chassis 15 is installed at the bottom end of the inner side of the placement frame 4, a main rod 16 is installed inside the chassis 15, a protective frame 17 is installed on the top of the main rod 16, and a telescopic rod 18 is installed between the outside of the main rod 16 and the protective frame 17. The projector 5 is protected by the protective frame 17, and the telescopic rod 18 is driven to move by pressing the projector 5, thereby completing the angle adjustment of the projector 5.

[0029] For further information, see Figure 2 and Figure 3 In this embodiment, connecting blocks are symmetrically installed on the outside of the placement frame 4, and connecting grooves are opened at positions corresponding to the connecting blocks on the inner wall of the outer frame 1. Ears are installed on the outside of the chassis 15, and the chassis 15 is fixedly connected to the placement frame 4 through the ears. The connecting blocks and the connecting grooves make the placement frame 4 more stable when rising.

[0030] In this embodiment, the implementation scenario is specifically as follows: when the projector 5 needs to be used, the threaded rod 7 is rotated by starting the double-headed motor 6, so that the first movable sleeve 13 moves in opposite directions outside the threaded rod 7, so that the first connecting rod 10 is unfolded to both sides, so that the placement frame 4 is lifted, and the active bevel gear 8 and the driven bevel gear 9 are rotated by the threaded rod 7, so that the screw rod 11 is rotated, so that the second movable sleeve 14 slides outside the screw rod 11, thereby driving the second connecting rod 12 to rise and fall, so that the second connecting rod 12 drives the first box cover 2 and the second box cover 3 to unfold, so that the projector 5 is presented on the outside of the outer frame 1, and the telescopic rod 18 is driven to move by pressing the projector 5, so as to complete the angle adjustment of the projector 5, and the projector 5 is sealed by the coordinated use of the card block and the card slot to prevent dust from sticking and facilitate carrying.

[0031] In actual use, compared with the existing lifting type projection equipment, the utility model can improve the overall practicality of the lifting type projection equipment through design.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting projection device, comprising an outer frame (1), characterized in that: The top of the outer frame (1) is respectively provided with a first box cover (2) and a second box cover (3); a placement frame (4) is installed inside the outer frame (1); a projector (5) is installed inside the placement frame (4); a double-headed motor (6) is installed at the bottom end of the inner side of the outer frame (1); a threaded rod (7) is symmetrically installed outside the double-headed motor (6); a driving bevel gear (8) is symmetrically installed at one end of the threaded rod (7) away from the double-headed motor (6); a driven bevel gear (9) is installed outside the driving bevel gear (8); a first connecting rod (10) is installed outside the threaded rod (7); a screw rod (11) is installed inside the driven bevel gear (9); and a second connecting rod (12) is installed outside the screw rod (11).

2. The lifting projection device according to claim 1, characterized in that: A first movable sleeve (13) is installed at one end of the first connecting rod (10) close to the threaded rod (7), and one end of the first connecting rod (10) away from the threaded rod (7) is rotatably connected to the bottom of the placement frame (4).

3. The lifting projection device according to claim 1, characterized in that: A second movable sleeve (14) is installed at one end of the second connecting rod (12) close to the screw rod (11), and one end of the second connecting rod (12) away from the screw rod (11) is rotatably connected to the bottom of the first box cover (2) and the second box cover (3).

4. The lifting projection device according to claim 1, characterized in that: The bottoms of the first box cover (2) and the second box cover (3) are both provided with slide blocks, a slide groove is provided at a position corresponding to the slide block on the top of the outer frame (1), a clamping block is provided on a side of the first box cover (2) close to the second box cover (3), and a clamping groove is provided inside the second box cover (3) at a position corresponding to the clamping block.

5. The lifting projection device according to claim 1, characterized in that: A reinforcement component (101) is installed outside the outer frame (1), and the reinforcement component (101) consists of a first reinforcement bar and a second reinforcement bar, and the first reinforcement bar and the second reinforcement bar are connected in a snap-fit ​​connection.

6. The lifting projection device according to claim 1, characterized in that: A chassis (15) is installed at the bottom end of the inner side of the placement frame (4), a main rod (16) is installed inside the chassis (15), a protection frame (17) is installed on the top of the main rod (16), and a telescopic rod (18) is installed between the outside of the main rod (16) and the protection frame (17).

7. The lifting projection device according to claim 6, characterized in that: The placement frame (4) is symmetrically provided with connection blocks on its exterior, the inner wall of the outer frame (1) is provided with connection grooves at positions corresponding to the connection blocks, the chassis (15) is provided with ears on its exterior, and the chassis (15) is fixedly connected to the placement frame (4) via the ears.

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