Height-adjustable projector

Abstract

The utility model belongs to the technical field of projectors, and particularly relates to a height-adjustable projector, which comprises a base. A transmission cavity is formed in the base; the inner wall of the transmission cavity is rotationally connected with a worm wheel; the surface of the worm gear is meshed with a worm; arc-shaped cavities are formed in the two sides of the top of the base; an arc-shaped sliding block is slidably connected into the arc-shaped cavity. The top of the arc-shaped sliding block is fixedly connected with a limiting sliding rod. The surface of the limiting sliding rod is slidably connected with a limiting sleeve. The top end of the limiting sleeve is fixedly connected with a placing frame; an arc-shaped cavity is formed, an arc-shaped sliding block is arranged in the arc-shaped cavity, a limiting sliding rod is supported by the arc-shaped sliding block, the limiting sliding rod and a limiting sleeve are matched to be fixedly connected with a placement frame, meanwhile, the arc-shaped sliding block drives the limiting sliding rod and the limiting sleeve to rotate while sliding in the arc-shaped cavity, and therefore the effect of adjusting the angle of the placement frame is achieved; and the use adaptability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of projectors, in particular to a height-adjustable projector. 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. Projectors are widely used in homes, offices, schools and entertainment venues.

[0003] A Chinese patent with publication number CN215862532U discloses a dustproof and height-adjustable projector, including a projector body and a base, a height-adjustable connecting rod is arranged on the base, the connecting rod is connected to the projector body, a dust removal assembly is arranged in the base, the dust removal assembly includes a cooling fan installed in the base, an air outlet is arranged on the base, an elastic block is arranged in the air outlet, a plurality of air guide channels are arranged on the elastic block, and the air guide channels face the projector body; and a shield is also included, the shield covers the projector body, an air inlet channel is arranged on the shield, one end of the air inlet channel faces the air guide channel, and the other end faces the projector body. The utility model is convenient for adjusting the height and flexible in operation; it has good anti-collision, dust-proof and dehumidification effects, and the entire projector is not easy to be damaged and has a long service life.

[0004] As mentioned above, the patent provides a dustproof and height-adjustable projector. Although it is easy to adjust the height and flexible to operate, it has good anti-collision, dust-proof and dehumidification effects. The entire projector is not easy to be damaged and has a long service life. However, when in use, the corresponding angle cannot be adjusted. Each adjustment requires moving the entire projector. Such repeated movements may cause the projector to bump into or be damaged if you are not careful. The overall adaptability of use needs to be improved.

[0005] Therefore, a height-adjustable projector is proposed to solve the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above problems, a height-adjustable projector is proposed.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the height-adjustable projector described in the utility model comprises a base; a transmission cavity is opened inside the base; a worm wheel is rotatably connected to the inner wall of the transmission cavity; a worm is meshed with the surface of the worm wheel; arc-shaped cavities are opened on both sides of the top of the base; an arc-shaped slider is slidably connected to the inside of the arc-shaped cavity; the top of the arc-shaped slider is fixedly connected to a limiting slide rod; the surface of the limiting slide rod is slidably connected to a limiting sleeve; the top of the limiting sleeve is fixedly connected to a placement rack; and a limiting spring is sleeved inside the limiting sleeve.

[0008] Preferably, the two ends of the limit spring are fixedly connected to the top of the limit slide rod and the top of the placement rack respectively; the number of the limit sleeve, the limit slide rod and the limit spring is set to two, and the two limit sleeves, the limit slide rod and the limit spring are symmetrically arranged on both sides of the top of the base.

[0009] Preferably, a support screw is fixedly connected to the bottom of the placement rack; an adjustment sleeve is threadedly connected to the surface of the support screw; the bottom end of the adjustment sleeve passes through the base and extends to the interior of the transmission cavity; one end of the adjustment sleeve located inside the transmission cavity is fixedly connected to the top of the worm gear; the surface of the adjustment sleeve is rotatably connected to the top of the base.

[0010] Preferably, one end of the worm screw passes through the base and extends to one side of the base; one end of the worm screw located on one side of the base is fixedly connected to an adjustment knob; and a moving wheel is fixedly connected to the bottom of the base.

[0011] Preferably, the top of the placement rack is clamped with a projector shell; a clamping cavity is opened on the surface of the projector shell; a connecting bayonet is slidably connected to the surface of the placement rack; one end of the connecting bayonet passes through the placement rack in turn and extends to the inside of the clamping cavity.

[0012] Preferably, the number of the connecting pins is set to two, and the two connecting pins are symmetrically arranged on both sides of the placement rack; the surfaces of the two connecting pins are fixedly connected with fixed snap rings; the surfaces of the two connecting pins are slidably connected with sliding snap rings; the surfaces of the two connecting pins are sleeved with extrusion springs; the two ends of the extrusion spring are respectively fixedly connected to the surface of the fixed snap ring and the surface of the sliding snap ring.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides a height-adjustable projector, which provides an arc-shaped cavity, an arc-shaped slider inside the arc-shaped cavity, a limit slide rod supported by the arc-shaped slider, the limit slide rod and the limit sleeve cooperate to be connected and fixed with a placement frame, and the arc-shaped slider drives the limit slide rod and the limit sleeve to rotate while sliding in the arc-shaped cavity, thereby achieving the function of adjusting the angle of the placement frame and improving the adaptability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a stereogram of the side view structure of the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the bottom structure of the storage rack in the utility model;

[0019] Figure 4 It is a three-dimensional diagram of the transmission cavity structure in the utility model;

[0020] Figure 5 This is an exploded view of the top structure of the placement rack in the utility model;

[0021] Legend:

[0022] 1. Base; 2. Transmission cavity; 3. Worm gear; 4. Worm; 5. Arc cavity; 6. Arc slider; 7. Limit slide bar; 8. Limit sleeve; 9. Placement rack; 10. Limit spring; 11. Support screw; 12. Adjustment sleeve; 13. Moving wheel; 14. Projector housing; 15. Connecting pin; 16. Fixed snap ring; 17. Sliding snap ring; 18. Extrusion spring. DETAILED DESCRIPTION

[0023] 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 of 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.

[0024] Specific examples are given below.

[0025] See also Figure 1 - Figure 5The utility model provides a height-adjustable projector, comprising a base 1; a transmission cavity 2 is provided inside the base 1; a worm wheel 3 is rotatably connected to the inner wall of the transmission cavity 2; a worm 4 is meshed on the surface of the worm wheel 3; arc-shaped cavities 5 are provided on both sides of the top of the base 1; an arc-shaped slider 6 is slidably connected inside the arc-shaped cavity 5; a limiting slide bar 7 is fixedly connected to the top of the arc-shaped slider 6; a limiting sleeve 8 is slidably connected to the surface of the limiting slide bar 7; a placement rack 9 is fixedly connected to the top of the limiting sleeve 8; A limit spring 10 is sleeved inside the limit sleeve 8; when working, the transmission chamber 2 and the arc chamber 5 are opened at the top of the base 1, the worm wheel 3 and the worm 4 are arranged in the transmission chamber 2, and an arc slider 6 is arranged inside the arc chamber 5, and the limit slide rod 7 is supported by the arc slider 6. The limit slide rod 7 and the limit sleeve 8 are connected and fixed with the placement rack 9. At the same time, the arc slider 6 slides in the arc chamber 5 while driving the limit slide rod 7 and the limit sleeve 8 to rotate, thereby realizing the function of adjusting the angle of the placement rack 9 and improving the adaptability of use.

[0026] Further, such as Figure 2 and Figure 3As shown, the two ends of the limit spring 10 are fixedly connected to the top of the limit slide bar 7 and the top of the placement rack 9 respectively; the number of the limit sleeve 8, the limit slide bar 7 and the limit spring 10 is set to two, and the two limit sleeves 8, the limit slide bar 7 and the limit spring 10 are symmetrically arranged on both sides of the top of the base 1; the bottom of the placement rack 9 is fixedly connected with a support screw 11; the surface of the support screw 11 is threadedly connected with an adjusting sleeve 12; the bottom end of the adjusting sleeve 12 passes through the base 1 and extends to the inside of the transmission cavity 2; the end of the adjusting sleeve 12 located inside the transmission cavity 2 is fixedly connected to the top of the worm gear 3; the surface of the adjusting sleeve 12 is rotatably connected to the top of the base 1; one end of the worm 4 passes through the base 1 and extends to one side of the base 1; the end of the worm 4 located on one side of the base 1 is fixedly connected with an adjusting knob; the bottom of the base 1 is fixedly connected with a moving wheel 13. When working, the limit spring 10 is arranged at the top of the limit slide bar 7, and two limit sleeves 8 and the limit slide bar 7 are arranged to limit and adjust the two sides of the placement seat, and the moving wheel 13 is convenient for the base 1 to move. When adjusting the height, the adjusting knob is turned to drive the worm 4 to rotate, and the rotation of the worm 4 drives the worm wheel 3 to start rotating. After the worm wheel 3 rotates, the adjusting sleeve 12 is driven to rotate, and the supporting screw 11 is driven to start rotating through the rotation of the adjusting sleeve 12, and the limiting sleeve 8 and the limit slide bar 7 are used to limit the placement frame 9. When working here, the limit sleeve 8 and the limit slide bar 7 drive the arc slider 6 to slide in the arc cavity 5, and the initial state is set that the limit sleeve 8 and the limit slide bar 7 are in the middle position of the arc cavity 5. When rotating clockwise, the supporting screw 11 will move down inside the adjusting sleeve 12, and when rotating counterclockwise, the supporting screw 11 will move up inside the adjusting sleeve 12, thereby realizing the effect of the placement frame 9 being able to move up and down, and then realizing the effect of adjusting the height.

[0027] Further, such as Figure 5As shown, a projector shell 14 is clamped on the top of the placement rack 9; a clamping cavity is opened on the surface of the projector shell 14; a connecting bayonet 15 is slidably connected to the surface of the placement rack 9; one end of the connecting bayonet 15 passes through the placement rack 9 in sequence and extends to the inside of the clamping cavity; the number of the connecting bayonet 15 is set to two, and the two connecting bayonet pins 15 are symmetrically arranged on both sides of the placement rack 9; the surfaces of the two connecting bayonet pins 15 are fixedly connected to fixed snap rings 16; the surfaces of the two connecting bayonet pins 15 are slidably connected to sliding snap rings 17; the surfaces of the two connecting bayonet pins 15 are sleeved with extrusion springs 18; the two ends of the extrusion spring 18 are fixedly connected to the surfaces of the fixed snap ring 16 and the surfaces of the sliding snap ring 17, respectively. During operation, the projector housing 14 is placed on the placement rack 9, and a card cavity is opened on the surface of the projector housing 14. When the projector housing 14 is placed, the connecting card pin 15 is pulled to card the projector housing 14 into the placement rack 9, and then the connecting card pin 15 is released, and the extrusion spring 18 cooperates with the sliding card ring 17 to push the fixed card ring 16, and then the connecting card pin 15 is carded into the card cavity, thereby fixing the projector housing 14 in the placement rack 9, which realizes the function of facilitating the disassembly and assembly of the projector housing 14 as a whole, and further improves the adaptability of use.

[0028] Working principle: Since the above patent provides a dustproof and height-adjustable projector, although it is easy to adjust the height and flexible to operate; it has good anti-collision, dust-proof and dehumidification effects, the entire projector is not easy to be damaged and has a long service life, but when it is in use, the corresponding angle cannot be adjusted, and each adjustment requires moving the entire projector. Such repeated movements may cause the projector to bump into each other if you are not careful, causing damage to the projector. The overall adaptability of use needs to be improved. When working, the transmission cavity 2 and the arc cavity 5 are opened at the top of the base 1, the worm gear 3 and the worm 4 are arranged in the transmission cavity 2, and the arc slider 6 is arranged inside the arc cavity 5, and the limit slide bar 7 is supported by the arc slider 6, and the limit slide bar 7 and The limiting sleeve 8 is connected and fixed with the placement frame 9, and the arc-shaped slider 6 drives the limiting slide bar 7 and the limiting sleeve 8 to rotate while sliding in the arc-shaped cavity 5, so as to realize the function of adjusting the angle of the placement frame 9 and improve the adaptability of use. The limiting spring 10 is arranged at the top of the limiting slide bar 7. Two limiting sleeves 8 and limiting slide bars 7 are arranged to limit and adjust the two sides of the placement seat. The moving wheel 13 facilitates the movement of the base 1. When adjusting the height, the adjusting knob is turned to drive the worm 4 to rotate, and the rotation of the worm 4 drives the worm wheel 3 to start rotating. After the worm wheel 3 rotates, it drives the adjusting sleeve 12 to rotate, and the rotation of the adjusting sleeve 12 drives the support screw 11 to start rotating, and cooperates with the limiting sleeve 8 and The limiting slide bar 7 limits the placement rack 9, and when working here, the limiting sleeve 8 and the limiting slide bar 7 drive the arc-shaped slider 6 to slide in the arc cavity 5, and the initial state is set that the limiting sleeve 8 and the limiting slide bar 7 are in the middle position of the arc cavity 5. When rotating clockwise, the support screw 11 will move down inside the adjusting sleeve 12, and when rotating counterclockwise, the support screw 11 will move up inside the adjusting sleeve 12, thereby realizing the function of the placement rack 9 to move up and down, and then realizing the function of adjusting the height. The projector housing 14 is placed on the placement rack 9, and a card cavity is opened on the surface of the projector housing 14. When the projector housing 14 is placed, the connecting card pin 15 is pulled to card the projector housing 14 into the placement rack. 9, then release the connecting pin 15, and the extrusion spring 18 cooperates with the sliding snap ring 17 to push the fixed snap ring 16, and then the connecting pin 15 is stuck into the card cavity, so that the projector housing 14 is fixed in the placement rack 9, and the overall effect of facilitating the disassembly and assembly of the projector housing 14 is achieved, and the adaptability of use is further improved. By setting an arc cavity 5, an arc slider 6 is set inside the arc cavity 5, and the arc slider 6 supports the limiting slide bar 7, the limiting slide bar 7 and the limiting sleeve 8 are cooperated with the placement rack 9 to be connected and fixed, and at the same time, the arc slider 6 slides in the arc cavity 5 while driving the limiting slide bar 7 and the limiting sleeve 8 to rotate, thereby realizing the effect of adjusting the angle of the placement rack 9 and improving the adaptability of use.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A height-adjustable projector, characterized in that: The invention comprises a base (1); a transmission cavity (2) is provided inside the base (1); a worm wheel (3) is rotatably connected to the inner wall of the transmission cavity (2); a worm (4) is meshed on the surface of the worm wheel (3); arc cavities (5) are provided on both sides of the top of the base (1); an arc slider (6) is slidably connected inside the arc cavity (5); a limiting slide bar (7) is fixedly connected to the top of the arc slider (6); a limiting sleeve (8) is slidably connected to the surface of the limiting slide bar (7); a placing frame (9) is fixedly connected to the top of the limiting sleeve (8); a limiting spring (10) is sleeved inside the limiting sleeve (8).

2. A height-adjustable projector according to claim 1, characterized in that: The two ends of the limit spring (10) are respectively fixedly connected to the top of the limit slide bar (7) and the top of the placement frame (9); the number of the limit sleeve (8), the limit slide bar (7) and the limit spring (10) is set to two, and the two limit sleeves (8), the limit slide bar (7) and the limit spring (10) are symmetrically arranged on both sides of the top of the base (1).

3. A height-adjustable projector according to claim 1, characterized in that: The bottom of the placement frame (9) is fixedly connected to a support screw (11); the surface of the support screw (11) is threadedly connected to an adjustment sleeve (12); the bottom end of the adjustment sleeve (12) passes through the base (1) and extends into the interior of the transmission chamber (2); one end of the adjustment sleeve (12) located inside the transmission chamber (2) is fixedly connected to the top of the worm gear (3); the surface of the adjustment sleeve (12) is rotatably connected to the top of the base (1).

4. The height-adjustable projector according to claim 1, characterized in that: One end of the worm (4) passes through the base (1) and extends to one side of the base (1); one end of the worm (4) located on one side of the base (1) is fixedly connected to an adjustment knob; and the bottom of the base (1) is fixedly connected to a moving wheel (13).

5. The height-adjustable projector according to claim 1, characterized in that: The top of the placement rack (9) is clamped with a projector shell (14); a clamping cavity is provided on the surface of the projector shell (14); a connecting clamping pin (15) is slidably connected to the surface of the placement rack (9); one end of the connecting clamping pin (15) passes through the placement rack (9) in sequence and extends to the interior of the clamping cavity.

6. A height-adjustable projector according to claim 5, characterized in that: The number of the connecting bayonet pins (15) is set to two, and the two connecting bayonet pins (15) are symmetrically arranged on both sides of the placement frame (9); the surfaces of the two connecting bayonet pins (15) are fixedly connected with a fixed snap ring (16); the surfaces of the two connecting bayonet pins (15) are slidably connected with a sliding snap ring (17); the surfaces of the two connecting bayonet pins (15) are sleeved with an extrusion spring (18); the two ends of the extrusion spring (18) are respectively fixedly connected to the surface of the fixed snap ring (16) and the surface of the sliding snap ring (17).

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