Projector support and projection device

Abstract

The utility model relates to the technical field of projection equipment, in particular to a projector support and a projection device, comprising a support arm provided with a mounting through hole; the sliding part comprises a sliding block and a sliding rail; the rotating part comprises a middle shaft, an angle control assembly arranged on the middle shaft in a sleeving mode and a locking bolt, the middle shaft sequentially penetrates through the mounting through hole and the sliding block and is fixed through the locking bolt, the angle control assembly is located between the sliding block and the supporting arm, one side of the angle control assembly abuts against the supporting arm, and the other side of the angle control assembly abuts against the sliding block. Through the arrangement, the problem that the rotation angle is limited is solved, and the multifunctionality and adaptability of the equipment are greatly improved; in addition, the problem that the projector body slides down to influence the impression can be avoided, and the use experience and quality of the product are effectively improved; and finally, the problems of complicated mechanism, high cost and large size in similar products are solved, and the purposes of simplifying the structure, reducing the size and reducing the production cost are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a projector support and projection device belong to projection equipment technical field. BACKGROUND

[0002] With the user's demand of portable single arm projection movement form is unceasing enhancement, portable single arm projector urgently needs more rich movement form and higher use flexibility. At present, the existing portable single arm type projector movement form mainly includes body pitching and body sliding movement etc. Body pitching movement form provides the convenience for user's quick adjustment projection picture, realizes multi-angle vertical viewing experience, makes it possible for ceiling viewing, star projection and other innovative functions, and body sliding movement realizes the switching between the storage form and the use form of portable projector,

[0003] However, at present, the products with body pitching and body sliding movement form in portable single arm projection products are few, and the existing such mechanism has the defects of limited rotation angle, the influence of projector body sliding on the perception in the working process, complex structure, high cost, large volume and the like. These problems increase the structural stacking complexity and industrial design difficulty of portable single arm projection products, and at the market level, this also restricts the popularization of portable single arm projection products. Therefore, it is of practical significance to study a new type of projector support and projection device. SUMMARY

[0004] The utility model provides a projector support and projection device in view of the prior art exists's insufficient.

[0005] The utility model solves the technical scheme that the foregoing technical problem is as follows: a projector support, include: support arm, install through -hole is set up on the support arm, sliding part, including the slider and the slide rail that mutually slide cooperation, the slide rail is used for fixed projector, rotation part, including the middle axle, angle control assembly and locking bolt of setting on the middle axle, the middle axle passes in order through install through -hole and slider and is fixed through locking bolt, angle control assembly is located between slider and support arm and its one side with support arm abuts, other side with slider abuts.

[0006] Further, the cross section of the installation through hole and the middle shaft is a flat structure with arc shape on both sides of the middle rectangle, and the shapes of the two are matched to realize the circumferential limiting.

[0007] Further, the angle control assembly comprises a cam, a concave wheel, a movable disc and an elastic member which are sequentially sleeved on the middle shaft, the center hole of the cam is in shape matched with the cross section shape of the middle shaft, the center holes of the concave wheel, the elastic member and the movable disc are all circular holes, the cam is in abutment with the concave wheel, the contact surface of the cam and the concave wheel is provided with a boss, the concave wheel is correspondingly provided with a groove matched with the boss, the movable disc is fixedly connected with the sliding block and the circumferential edge of the movable disc is provided with a linkage groove recessed towards the center of the movable disc, and the concave wheel is integrally connected with a linkage column extending towards the movable disc and inserted into the linkage groove.

[0008] Further, the cam is provided with two groups of bosses arranged on the surface of the cam along the extension direction of the supporting arm, and the concave wheel is correspondingly provided with two groups of grooves arranged on the surface of the concave wheel along the sliding direction of the sliding part.

[0009] Further, the movable disc is fixedly connected with the sliding block through bolts, and the circumferential edge of the movable disc is further provided with a positioning groove recessed towards the center of the movable disc, and the side of the sliding block in abutment with the movable disc is provided with a limiting block matched with the positioning groove.

[0010] Further, the sliding block is provided with an elastic arched elastic arm, and the sliding rail is provided with a protrusion matched with the arched elastic arm at the position corresponding to the sliding path of the arched elastic arm.

[0011] Further, the sliding rail is provided with a strip-shaped hole arranged along the sliding direction, and the strip-shaped hole accommodates the locking bolt to reciprocally slide in the hole.

[0012] Further, the sliding block is made of polyoxymethylene resin material and a metal insert, and the metal insert is embedded at the abutment position of the sliding block and the angle control assembly.

[0013] Further, the two side edges of the sliding block are bent towards the sliding rail and wrap the corresponding side edges of the sliding rail to form sliding limiting cooperation.

[0014] The utility model further provides a projection device, including the above-mentioned projector support and the projector body for projecting image installed on the sliding rail.

[0015] The utility model has the advantages of:

[0016] By the above setting, the 360-degree endless rotation angle adjustment and the sliding adjustment are integrated, the problem of limited rotation angle is solved, the application is suitable for various projection requirements, the user can find the best projection angle in any direction, and the multifunction and adaptability of the device are greatly improved; and the sliding part is designed to be rotatable, unlike the previous sliding rail which is always vertically arranged, when the sliding part is rotated to a non-vertical state, even if the projection is pressed, the projector will not be lowered, the problem of affecting the visual effect caused by the sliding of the projector body can be avoided, the product use experience and quality feeling are effectively improved; finally, the application connects the support arm and the sliding part through the middle shaft, solves the problems of complex mechanism, high cost and large size in similar products, realizes the structure simplification, size reduction and cost reduction. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Front view of the projector support according to Embodiment 1 of the application;

[0018] Figure 2 Front view of the projector support according to Embodiment 1 of the application;

[0019] Figure 3 Front view of the projector support according to Embodiment 1 of the application;

[0020] Figure 4 Front view of the projector support according to Embodiment 1 of the application;

[0021] Figure 5 Front view of the projector support according to Embodiment 1 of the application;

[0022] Figure 6 Front view of the projector support according to Embodiment 1 of the application;

[0023] Figure 7 Front view of the projector support according to Embodiment 1 of the application;

[0024] Figure 8 Front view of the projector support according to Embodiment 1 of the application;

[0025] Figure 9 Front view of the projector support according to Embodiment 1 of the application; Figure 5

[0026] Front view of the projector support according to Embodiment 1 of the application; Figure 10

[0027] Front view of the projector support according to Embodiment 1 of the application; Figure 11

[0028] ​Label: 1, support arm; 2, mounting through hole; 3, sliding part; 31, sliding block; 311, limiting block; 312, arched elastic arm; 32, slide rail; 321, strip-shaped hole; 4, rotating part; 41, middle shaft; 42, angle control assembly; 421, cam; 4211, boss; 422, concave wheel; 4221, groove; 4222, linkage column; 423, movable disc; 4231, linkage groove; 4232, positioning groove; 424, elastic piece; 43, locking bolt; 44, gasket. DETAILED DESCRIPTION

[0029] The specific embodiments of the present application will be described in detail below. The present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the disclosed specific embodiments.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used are only for describing specific embodiments, not for limiting the present application.

[0031] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0032] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, set, or it can be detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] Example 1:

[0034] As Figures 1-5The utility model provides a kind of projector support, comprising: support arm 1, the installation through-hole 2 is opened in the support arm 1, the installation through-hole 2 is the flat structure of middle rectangle two sides arc shape;Sliding part 3, including mutually sliding cooperation's slider 31 and slide rail 32, the slide rail 32 is used to fix projector;Rotary part 4, including middle shaft 41, angle control assembly 42 and locking bolt 43 of sleeve set on the middle shaft 41, angle control assembly 42 is used to fix its position after rotating a certain angle in sliding part 3, the cross section of the middle shaft 41 is also the flat structure of middle rectangle two sides arc shape, the cross section of the middle shaft 41 and the installation through-hole 2 shape are compatible, the middle shaft 41 is in sequence and passes through the installation through-hole 2 and the slider 31 and is fixed by locking bolt 43, the angle control assembly 42 is located between slider 31 and support arm 1 and its one side and the support arm 1 abut, other side and the slider 31 abut.It can be understood that when the middle shaft 41 is inserted into the installation through-hole 2, by being set as the flat structure of shape compatible, installation through-hole 2 is circumferentially positioned to the middle shaft 41, in the case where structural strength is not lost, further improve the connection stability;The middle shaft 41 is in sequence and extends to the side of the slider 31 away from the support arm 1, and the end portion is threadedly connected with locking bolt 43, by tightening locking bolt 43 to make a certain pre-tightening force between support arm 1 and slider 31, and then after rotating sliding part 3, can make sliding part 3 be fixed in the position, to realize the multi-angle adjustment and fixing of projector.

[0035] Through the above setting, the application integrates 360-degree endless rotation angle adjustment and sliding adjustment, solves the problem of limited rotation angle, makes the application suitable for various projection needs, so that users can find the best projection angle in any direction, greatly improves the multifunctionality and adaptability of the equipment;And, the application is designed to be rotatable by setting the sliding part 3, unlike the case where the slide rail 32 is always vertically arranged, when the sliding part 3 is rotated to a non-vertical state, even if it is pressed by mistake, the projector will not drop, which can avoid the problem of affecting the visual effect caused by the sliding of the projector body, effectively improving the product use experience and quality feeling;Finally, the application connects the support arm 1 and the sliding part 3 through the middle shaft 41, solves the problems of complex mechanism, high cost and large size in similar products, realizes structure simplification, size reduction and cost reduction.

[0036] Specifically, as Figure 4 、 6As shown in Figure 9, the angle control component 42 includes a cam 421, a concave wheel 422, a movable disk 423, and an elastic element 424 sequentially mounted on the central shaft 41. The shape of the central hole of the cam 421 is adapted to the cross-sectional shape of the central shaft 41. The central holes of the concave wheel 422, the elastic element 424, and the movable disk 423 are all circular holes. The cam 421 abuts against the concave wheel 422. The contact surface between the cam 421 and the concave wheel 422 is provided with a boss 4211. The concave wheel 422 is provided with a groove 4221 that is adapted to the boss 4211. The movable disk 423 is fixedly connected to the slider 31, and the circumferential edge of the movable disk 423 is provided with a linkage groove 4231 that is recessed towards its center. The concave wheel 422 is integrally connected with a linkage post 4222 that extends towards the movable disk 423 and is inserted into the linkage groove 4231. Preferably, to achieve a compact structure, the elastic element 424 is arranged inside the through hole for the central shaft to pass through on the slider. It is a spring or a spring sheet. In this embodiment, a spring sheet is used. Gaskets 44 are provided between the movable disk 423 and the concave wheel 422, between the movable disk and the elastic element 424, and between the elastic element 424 and the locking bolt 43. It can be understood that, through the above arrangements, the cam 421 is fixedly sleeved on the central shaft 41, and the concave wheel 422 and the movable disk 423 are rotatably sleeved on the central shaft 41. When the sliding part 3 is rotated, the slider 31 drives the movable disk 423 to rotate, and the concave wheel 422 rotates synchronously with the movable disk 423 through the linkage column 4222. When the boss 4211 is not engaged with the groove 4221, the... The boss 4211 abuts against the surface of the concave wheel 422, increasing the distance between the concave wheel 422 and the cam 421. This compresses the elastic element 424, increasing the preload and allowing the sliding part 3 to remain stable in its position. When a torque of 50 N·m is applied, the rotation angle deviation of the sliding part 3 is ≤0.5°, effectively improving stability. When the boss 4211 engages with the groove 4221, the distance between the concave wheel 422 and the cam 421 decreases, and the shaft torque decreases instantaneously. Combined with the restoring force provided by the elastic element 424, this creates a sucking-type feel, indicating that the sliding part 3 has rotated to the predetermined position. Furthermore, the engagement of the boss 4211 and the groove 4221 avoids the problem of local stress concentration caused by the contact between the boss 4211 and the surface of the concave wheel 422, effectively extending the service life. Preferably, the cam 421 is provided with two sets of bosses 4211, which are arranged on the surface of the cam 421 along the extending direction of the support arm 1. The concave wheel 422 is correspondingly provided with two sets of grooves 4221, which are arranged on the surface of the concave wheel 422 along the sliding direction of the sliding part 3. With this arrangement, when the bosses 4211 engage with the grooves 4221, the sliding part 3 is in a position as follows: Figure 1As shown in the initial position parallel to the support arm 1, the bracket occupies less space, facilitating storage and carrying; the setting cooperates with the setting of the boss 4211 and the groove 4221, so that the user can quickly adjust the projection device to the initial position after use, which is suitable for occasions that require frequent movement and storage of the projection device, such as mobile office, travel demonstration, etc. In the mobile office scenario, the portability and disassembly efficiency of the device are improved.

[0037] Specifically, as shown in the figure, Figure 9 The movable disc 423 is fixedly connected with the sliding block 31 through a bolt, and the circumferential edge of the movable disc 423 is further provided with a positioning groove 4232 recessed toward the center of the circle, and the side of the sliding block 31 abutting against the movable disc 423 is provided with a limiting block 311 cooperating with the positioning groove 4232. It should be pointed out that the application preferably provides two positioning grooves 4232, and each positioning groove 4232 forms a 90-degree angle with the linkage groove 4231, and the sliding block 31 and the limiting block 311 are an integral structure formed by machining. Through this setting, positioning can be quickly performed during installation, and local damage of the bolt connection between the movable disc 423 and the sliding block 31 under the action of long-term torque can be prevented, which not only weakens the installation difficulty, but also prolongs the service life.

[0038] Specifically, as shown in the figure, Figures 10-11 The sliding block 31 is provided with an elastic arched elastic arm 312, and the sliding rail 32 is provided with a protrusion cooperating with the arched elastic arm 312 at a position corresponding to the sliding path of the arched elastic arm 312. It should be pointed out that the arched elastic arm 312 and the sliding block 31 are an integral structure formed by machining. Through this setting, the arched elastic arm 312 and the corresponding protrusion of the sliding rail 32 are elastically deformed under extrusion when sliding, which can generate a soft sliding damping feel and a retaining force at both ends of the sliding stroke. It can not only solve the problem of the projection machine body sliding down during use through good retaining force, thereby improving the product use experience and quality feeling, but also avoid impact caused by excessive force during adjustment, thereby ensuring smooth operation, and is suitable for occasions that require quick and smooth adjustment.

[0039] Specifically, as shown in the figure, Figures 10-11 The sliding rail 32 is provided with a strip-shaped hole 321 arranged along the sliding direction, and the strip-shaped hole 321 accommodates the reciprocating sliding of the locking bolt 43 in the hole. It can be understood that by setting the strip-shaped hole 321, other stroke limiting devices are not required to limit the sliding stroke, which further simplifies the structure and reduces the production cost under the premise of ensuring the structural strength.

[0040] Specifically, the slider 31 is made of polyformaldehyde resin material and metal inserts, the metal inserts are embedded at the abutting position of the slider 31 and the angle control assembly 42. Through the above setting, the local structural strength of the slider 31 is ensured, and excellent wear resistance and self-lubricity are also achieved, the friction coefficient change rate is ≤5% after 10,000 times of reciprocating sliding, even in the case of frequent use, the smoothness of the sliding rail 32 can be maintained, the service life of the equipment is prolonged, and the device is suitable for scenes of frequent adjustment of projection angle,

[0041] Specifically, as shown in Figures 10-11 The two side edges of the slider 31 are bent towards the sliding rail 32 and wrap the corresponding side edges of the sliding rail 32 to form sliding limiting cooperation. Through this setting, the sliding stability is further improved, and the adjustment is more stable.

[0042] Embodiment 2

[0043] The utility model provides a kind of projection device, including the projector support described in embodiment 1, further include the projector body for projecting image for being installed on sliding rail 32.

[0044] The technical features of the above-described embodiments can be combined arbitrarily, to make the description concise, not all possible combinations of the technical features in the above-described embodiments are enumerated, however, as long as the combination of these technical features does not exist contradictory, it should be considered as the scope of the present application.

[0045] For those skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which are within the scope of the present application, the scope of the present application is subject to the appended claims.

Claims

1. A projector support, characterized by, The application relates to a projector support. The support arm is provided with a mounting through hole. The mounting through hole and the middle shaft are both flat structures with middle rectangular sections and arc-shaped sides, and the shapes of the mounting through hole and the middle shaft are matched to realize circumferential limiting. The angle control assembly comprises a cam, a concave wheel, a movable disc and an elastic piece which are sequentially sleeved on the middle shaft.

2. A projector support according to claim 1, wherein The cam is provided with two groups of bosses, and the two groups of bosses are arranged on the surface of the cam along the extension direction of the support arm.

3. A projector support according to claim 2, wherein, The movable disc is fixedly connected with the sliding block through bolts, and the circumferential edge of the movable disc is further provided with a positioning groove which is recessed towards the center of the movable disc.

4. A projector support according to claim 3, wherein The sliding block is provided with elastic arched elastic arms, and the sliding rail is provided with protrusions which are matched with the arched elastic arms at positions corresponding to the sliding paths of the arched elastic arms.

5. The projector support of claim 3, wherein The sliding rail is provided with a strip-shaped hole which is arranged along the sliding direction and accommodates the reciprocating sliding of the locking bolt in the hole.

6. The projector mount of claim 1, wherein, The sliding block is made of polyformaldehyde resin material and a metal insert which is embedded at the abutting position of the sliding block and the angle control assembly.

7. The projector support of claim 1, wherein, The two side edges of the sliding block are bent towards the sliding rail and cover the corresponding side edges of the sliding rail to form sliding limiting cooperation.

8. The projector mount of claim 1, wherein, The application further relates to a projector body which is installed on the sliding rail and used for projecting images.

9. The projector support of claim 1, wherein, ​ 10. A projection apparatus, characterized by, ​

Images