Projector holder

Abstract

The utility model relates to the technical field of holders, and discloses a projector holder, which is characterized in that a gear coaxial with an upper cover is integrally formed at the bottom of the upper cover; the gear cover is fixedly connected with the upper cover and installed below the gear. The gear cover comprises a large disc and a small disc which form an inverted-T-shaped circular truncated cone structure and are integrally formed. A first concave circular groove is formed in the center of the lower cover from top to bottom, a second concave circular groove is formed in the center of the lower cover from bottom to top, the large disc is limited in the second concave circular groove, and the small disc is inserted into a circular through hole communicated with the first concave circular groove and the second concave circular groove; after the upper cover and the lower cover are in butt joint, the gear is inserted into the first concave circular groove; the upper cover and the gear cover which are connected and fixed rotate by 360 degrees relative to the lower cover, and the inner side of the lower cover is provided with a triangular elastic piece matched with teeth on the gear for limiting after the upper cover and the gear cover rotate and are adjusted. 360-degree flexible rotation and precise limiting are achieved, and it is ensured that the projection angle is adjusted at will and the picture is stable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of holder, specifically relates to a projector holder. BACKGROUND

[0002] With the wide application of projection technology in the fields of business meeting, education training, home theater and the like, as a key component for bearing and adjusting the position and angle of a projector, the performance of the projector holder directly influences the projection effect and user experience. In order to meet the diversified projection requirements, the projector holder needs to have flexible angle adjustment function, reliable structural stability and convenient installation and maintenance characteristics. Meanwhile, in the complex and changeable use environment, the holder also needs to have good dustproof and anti-interference ability to ensure long-term stable operation.

[0003] Some existing projector holders lack precise limiting structure in the design of the connection between the upper cover and the lower cover, which makes it difficult to guarantee the coaxiality after assembly, and the looseness and shaking phenomenon is likely to occur during the rotation of the holder, which affects the stability of the projection picture and shortens the service life of the holder. The gears of the traditional holder are usually assembled in a split type, which is prone to errors during assembly, resulting in unsmooth gear transmission and difficult to guarantee the transmission precision and stability. Meanwhile, the gears lack effective protection and support structure, are easily worn by external collision, and have relatively large noise during operation, which affects the use experience. The angle adjustment range of some holders is limited, which cannot meet the full-range projection requirements. In terms of angle limiting, the existing design may have the problems of inaccurate and unstable limiting, which is difficult to guarantee the fixing effect of the projector at a specific angle and is prone to angle deviation due to external force or self-gravity.

[0004] In view of this, we propose a projector holder to solve the above problems. INVENTION CONTENTS

[0005] The present application aims to solve the problems of poor structural stability and unreliable gear transmission of the projector holder in the prior art, which leads to easy shaking during rotation and large noise; and the installation and maintenance are complex, the universality is insufficient, and it is difficult to meet the diversified use requirements.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A projector holder, comprising:

[0008] An upper cover integrally formed with a gear coaxial with the upper cover at the bottom of the upper cover;

[0009] A gear cover fixedly connected with the upper cover and installed below the gear, the gear cover comprising a large disc and a small disc integrally formed to constitute a convex-shaped circular table structure;

[0010] The lower cover is provided with a first inner concave circular groove from top to bottom and a second inner concave circular groove from bottom to top, and the large disc is limited in the second inner concave circular groove and the small disc is inserted into a circular through hole which is connected with the first inner concave circular groove and the second inner concave circular groove; the gear is inserted into the first inner concave circular groove after the upper cover is connected with the lower cover;

[0011] The upper cover and the gear cover are rotated 360° relative to the lower cover, and the lower cover is provided with triangular elastic sheets which are limited by the teeth on the upper cover and the gear cover after rotation adjustment.

[0012] Preferably, a plurality of insertion columns are arranged on the small disc in a ring shape at equal distances, and a plurality of positioning insertion holes corresponding to the insertion columns are arranged on the gear in a ring shape at equal distances;

[0013] A plurality of mounting holes A are arranged on the gear cover in a ring shape at equal distances outside the insertion columns, and a plurality of mounting holes B corresponding to the mounting holes A are arranged on the gear in a ring shape at equal distances, and the gear cover and the gear are fixed together by screws penetrating the mounting holes A and being screwed with the mounting holes B.

[0014] Preferably, the lower cover is provided with elastic sheet positions for horizontally limiting the triangular elastic sheets, and the elastic sheet positions are provided with openings connected with the first inner concave circular groove, and the triangular elastic sheets are inserted into the first inner concave circular groove through the openings;

[0015] When the upper cover and the gear cover are rotated relative to the lower cover, the gear extrudes the triangular elastic sheets into the elastic sheet positions, so that the triangular elastic sheets do not affect the rotation of the upper cover and the gear cover.

[0016] Preferably, the outer bottom end of the triangular elastic sheet is provided with a lower protruding limiting insertion block which is inserted into an insertion groove position on the elastic sheet position.

[0017] Preferably, the center of the gear cover, the upper cover and the gear is provided with a center circular hole.

[0018] Preferably, a plurality of hexagonal mounting positions are arranged on the upper cover in a ring shape at equal distances, and the projector is fixed on the top of the upper cover by penetrating the hexagonal mounting positions with bolts.

[0019] Preferably, the lower cover is provided with two inverted U-shaped mounting feet on both sides of the bottom, and the two inverted U-shaped mounting feet are inserted into two ends of the U-shaped support for positioning.

[0020] Preferably, the insertion pin is a frame insertion block with a V-shaped groove at the bottom.

[0021] Preferably, the outer edge of the lower cover is limited inside a ring-shaped wrapping edge on the upper cover.

[0022] Compared with the prior art, the technical effects and advantages of the utility model are:

[0023] (1) The upper and lower covers of the projector holder are designed with ring-shaped edge limiting, which can accurately position and ensure coaxiality, prevent dust and foreign matter, and the multi-level limiting cooperation of the gear cover and the lower cover, as well as the combination of the insertion column, the positioning jack and the screw connection, can enhance the connection firmness between the gear and the gear cover and the lower cover, ensure the stability of the overall structure of the holder, and prevent shaking during rotation.

[0024] (2) The gear integrated at the bottom of the upper cover can reduce assembly errors, and the protection and support of the gear cover below can make the gear transmission accurate and stable, and the running stress uniform and the noise small. The 360° omnidirectional rotation can meet the needs of various projection angles, and the cooperation of the triangular elastic sheet and the gear teeth can accurately limit at a specific angle, provide clear angle feedback, prevent angle deviation, and ensure the stability of the projection picture.

[0025] (3) The hexagonal mounting position facilitates the installation and disassembly of the projector, and the design of the inverted U-shaped mounting foot and the latch simplifies the connection process of the holder and the support. The connection mode of each component is convenient for disassembly, simple to operate during maintenance, and can reduce maintenance cost and difficulty. The ring-shaped equidistant arrangement of the hexagonal mounting position is suitable for various specifications of projectors, and the connection mode of the inverted U-shaped mounting foot and the U-shaped support is flexible, which can meet the installation needs of different scenes and improve the application range of the holder.

[0026] (4) The limiting plug of the triangular elastic sheet cooperates with the insertion slot, and the design of the gear extrusion elastic sheet can ensure reliable limiting without affecting smooth rotation; the center circular hole facilitates line layout, reduces weight and improves rotation balance. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the first perspective view of the utility model;

[0028] Figure 2 is the second perspective view of the utility model;

[0029] Figure 3 is an exploded view of the utility model;

[0030] Figure 4 is a structure schematic view of the utility model after removing the upper cover;

[0031] Figure 5 is the first perspective view of the lower cover of the utility model;

[0032] Figure 6 is the second perspective view of the lower cover of the utility model;

[0033] Figure 7 is a structure schematic view of the gear cover of the utility model;

[0034] Figure 8 is a structure schematic view of the upper cover of the utility model;

[0035] Figure 9 It is a structure diagram after half cutting of the utility model.

[0036] In the figure: 1, bolt; 11, V-shaped groove; 2, upper cover; 21, positioning jack; 22, mounting hole B; 23, center circular hole; 24, hexagonal mounting position; 25, gear; 26, annular edge; 3, gear cover; 31, large disc; 32, small disc; 33, insertion column; 34, mounting hole A; 4, lower cover; 41, first concave circular groove; 42, second concave circular groove; 43, circular through hole; 44, spring piece position; 45, opening; 46, insertion groove position; 47, inverted U-shaped mounting foot; 48, mounting groove; 5, triangular spring piece; 51, limiting insertion block. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0038] The following will be combined Figures 1 to 9 The application will be further described in detail,

[0039] The embodiment of the application discloses a projector holder, which comprises an upper cover 2, a gear cover 3, a lower cover 4, a triangular spring piece 5 and a bolt 1.

[0040] The upper cover 2 is integrally formed at the bottom with a gear 25 coaxial with the upper cover 2; the gear cover 3 is fixedly connected with the upper cover 2 and is installed below the gear 25; the triangular spring piece 5 is horizontally and limitingly placed on the spring piece position 44 provided on the lower cover 4; the gear cover 3 comprises a large disc 31 and a small disc 32 integrally formed to constitute a convex letter-shaped circular table structure; the lower cover 4 is provided at the center with a first concave circular groove 41 from top to bottom and a second concave circular groove 42 from bottom to top; the large disc 31 is limited in the second concave circular groove 42 and the small disc 32 is inserted into the circular through hole 43 in the first concave circular groove 41 and the second concave circular groove 42; after the upper cover 2 and the lower cover 4 are butted, the gear 25 is inserted into the first concave circular groove 41; the upper cover 2 and the gear cover 3 after being fixedly connected are rotated by 360 degrees relative to the lower cover 4; the inside of the lower cover 4 is provided with the triangular spring piece 5 which is limited by the teeth on the gear 25 after the upper cover 2 and the gear cover 3 are rotated and adjusted.

[0041] The gear 25 is integrally formed at the bottom of the upper cover 2, reducing the assembly steps between parts and the problem of gear 25 transmission caused by assembly errors, ensuring the precision and stability of the gear 25 transmission. The gear cover 3 is installed below the gear 25 and fixedly connected with the upper cover 2, which not only protects the gear 25 from external impact and wear, but also provides stable support when the gear 25 rotates, making the force on the gear 25 more uniform during operation, further improving the stability and reliability of the transmission. In addition, this structure design encloses the gear 25 in a relatively independent space, which helps to reduce the noise generated when the gear 25 rotates, providing a quieter use environment for users.

[0042] The triangular spring piece 5 is horizontally limited and placed, which can play the maximum role in a limited space. By limiting the triangular spring piece 5 on the spring piece position 44, the position stability of the triangular spring piece 5 during the operation of the gimbal is ensured, so that it can accurately cooperate with the teeth on the gear 25 to realize the limiting function of the rotation angle of the gimbal. This limiting design also facilitates the installation and removal of the triangular spring piece 5, making the operation more convenient when the triangular spring piece 5 needs to be maintained or replaced, reducing maintenance cost and difficulty.

[0043] The convex circular table structure of the wheel cover and the double concave circular groove design of the lower cover 4 form a precise matching relationship. The large disc 31 is limited in the second concave circular groove 42, and the small disc 32 is inserted into the circular through hole 43. This multi-level limiting method not only accurately positions the gear cover 3, but also accurately guides the gear 25 into the first concave circular groove 41 after the upper and lower covers 4 are connected, ensuring the relative position accuracy between the gear 25, the gear cover 3 and the lower cover 4, providing reliable protection for the smooth rotation and stable transmission of the gear 25. At the same time, this structure design increases the contact area between the gear cover 3 and the lower cover 4, improves the firmness and stability of the connection, and enables the gimbal to maintain the integrity of the overall structure when subjected to external forces.

[0044] The realization of 360° rotation enables the projector gimbal to flexibly adjust the projection angle in a full range, meeting the projection needs in different use scenarios and greatly improving the applicability and flexibility of the gimbal. The limiting function of the triangular spring piece 5 cooperating with the gear teeth of the gear 25 can stably fix the upper cover 2 and the gear cover 3 at a certain angle after the gimbal rotates to that angle, preventing the gimbal from shifting due to external forces or its own gravity, and ensuring the stability and accuracy of the projection picture. This limiting method also provides clear angle feedback for users, making it easy for users to quickly and accurately adjust to the desired projection angle, improving the convenience and experience of user operation. The cooperation of the limiting plug 51 and the slot 46 further enhances the fixing effect of the triangular spring piece 5, ensuring that the triangular spring piece 5 does not shift or fall off during the rotation of the gimbal, and ensuring the reliability of the limiting function.

[0045] The outer side bottom end of the triangular spring piece 5 is provided with a lower protruding limiting plug 51, which is inserted into the slot position 46 on the spring piece position 44. The outer side bottom end of the triangular spring piece 5 is provided with a lower protruding limiting plug 51, which is inserted into the slot position 46 on the spring piece position 44. After the triangular spring piece 5 passes through the opening 45 at the connection of the spring piece position 44 and the first inner recessed circular groove 41, it extends into the first inner recessed circular groove 41. When the upper cover 2 and the gear cover 3 rotate relative to the lower cover 4, the gear 25 extrudes the triangular spring piece 5 into the spring piece position 44, so that the triangular spring piece 5 does not affect the rotation of the upper cover 2 and the gear cover 3.

[0046] The triangular spring piece 5 can be extruded into the spring piece position 44 by the gear 25 when it is not working, avoiding the interference of the triangular spring piece 5 with the rotation of the gimbal, making the rotation of the gimbal more smooth. At the same time, this design can also effectively reduce the resistance of the gimbal during rotation, improve the flexibility of rotation and the convenience of operation.

[0047] A plurality of insertion columns 33 are arranged in a ring shape at equal distances on the small disc 32, and a plurality of positioning insertion holes 21 corresponding to the insertion columns 33 are arranged in a ring shape at equal distances on the gear 25.

[0048] The one-to-one corresponding insertion design of the insertion columns 33 and the positioning insertion holes 21 can quickly and accurately determine the relative position of the gear cover 3 and the gear 25 during installation, greatly improving the assembly efficiency. This positioning method not only ensures the coaxiality between the gear 25 and the gear cover 3, but also to some extent, shares the torque borne by the screw connection, enhances the stability of the connection between the gear 25 and the gear cover 3, prevents the connection from loosening during the rotation of the gear 25 due to uneven force, and ensures the reliability and stability of the transmission of the gear 25.

[0049] A plurality of mounting holes A 34 are arranged in a ring shape at equal distances on the gear cover 3 outside the insertion columns 33, and a plurality of mounting holes B 22 corresponding to the mounting holes are arranged in a ring shape at equal distances on the gear 25. The gear cover 3 and the gear 25 are fixed together by screws passing through the mounting holes A 34 and screwing into the mounting holes B 22.

[0050] The connection mode of the mounting holes A and the mounting holes B with screws provides a reliable guarantee for the fixation of the gear cover 3 and the gear 25. Screw connection has high fastening strength, which can firmly connect the gear cover 3 and the gear 25 together, ensuring that they will not relatively displace during the operation of the gimbal. The ring-shaped and equally-spaced mounting hole design makes the force of the screws more uniform, further improving the stability and reliability of the connection. In addition, this connection mode is convenient for disassembly and maintenance. When it is necessary to check, repair or replace the gear 25 or the gear cover 3, the two can be easily separated by unscrewing the screws, which is simple and convenient to operate.

[0051] The center of the gear cover 3, the upper cover 2 and the gear 25 is provided with a center circular hole 23. The center circular hole 23 provides a passage for the cables, shafts and other components that may need to pass through the gimbal interior, facilitating the layout and connection of the internal lines of the gimbal, making the internal structure of the gimbal more neat and orderly, and reducing the risk of failure caused by line entanglement.

[0052] The upper cover 2 is provided with a plurality of hexagonal mounting positions 24 arranged annularly and equidistantly. The projector is fixed on the top of the upper cover 2 by bolts penetrating through the hexagonal mounting positions 24. The design of the hexagonal mounting positions 24 facilitates the installation and disassembly of the projector using hexagonal bolts, which have a large contact area and are not easy to slip during tightening and loosening, making the operation more convenient and efficient. The annular and equidistantly arranged hexagonal mounting positions 24 can ensure that the projector is evenly stressed during installation, ensuring that the projector is securely fixed on the top of the upper cover 2 and preventing it from falling due to loosening during gimbal rotation or use, thereby ensuring the safety of the projector. At the same time, this installation method is suitable for projectors of different specifications and models. By selecting appropriate bolts and gaskets, the projector can be stably installed on the gimbal, improving the versatility and compatibility of the gimbal.

[0053] The bottom of the lower cover 4 is provided with two inverted U-shaped mounting feet 47 symmetrically arranged with two ends inserted and positioned in the U-shaped bracket. The two sides of the lower cover 4 are provided with mounting grooves 48, and the insertion pins 1 are inserted into the inverted U-shaped mounting feet 47.

[0054] The design of the inverted U-shaped mounting feet and the U-shaped bracket provides a simple, convenient and stable way to connect the gimbal and the bracket. By inserting the two ends of the U-shaped bracket into the inverted U-shaped mounting feet, the initial positioning of the gimbal and the bracket can be quickly achieved. The insertion pin 1 improves the pre-tightening force after the installation of the U-shaped bracket and the inverted U-shaped mounting feet 47. The V-shaped groove design at the bottom of the insertion pin 1 can tightly fit the edge of the U-shaped bracket, increasing the friction between the insertion pin 1 and the bracket, and further improving the firmness of the connection.

[0055] The outer edge of the lower cover 4 is limited to the inside of the annular wrapping 26 on the upper cover 2. By limiting the lower cover 4 with the annular wrapping 26, the relative position of the upper and lower covers 4 can be accurately determined, ensuring that they maintain coaxiality after assembly, laying a foundation for the installation of subsequent components and the stable operation of the gimbal as a whole. At the same time, the wrapping structure of the annular wrapping 26 can effectively prevent dust and foreign matter from entering the gimbal interior, protecting the internal precision components and prolonging the service life of the gimbal. In addition, this limiting method can also enhance the connection tightness between the upper and lower covers 4, reducing the shaking caused by loosening during gimbal rotation, and improving the stability and reliability of the gimbal operation.

[0056] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A gimbal for a projector, the gimbal comprising: The utility model relates to a projection device with a rotatable upper cover and a rotatable gear cover, and belongs to the field of projection device. It comprises: an upper cover (2) integrally formed with a gear (25) coaxial with the upper cover (2) at the bottom of the upper cover (2); a gear cover (3) fixedly connected with the upper cover (2) and installed below the gear (25), wherein the gear cover (3) comprises a large disc (31) and a small disc (32) integrally formed to constitute a convex letter-shaped circular truncated cone structure; a lower cover (4) provided with a first inner concave circular groove (41) from top to bottom and a second inner concave circular groove (42) from bottom to top at the center thereof, wherein the large disc (31) is limited in the second inner concave circular groove (42) and the small disc (32) is inserted into a circular through hole (43) connecting the first inner concave circular groove (41) and the second inner concave circular groove (42); after the upper cover (2) and the lower cover (4) are butted, the gear (25) is inserted into the first inner concave circular groove (41); 2. A pan-tilt for a projector according to claim 1, characterized in that: the upper cover (2) and the gear cover (3) are rotated 360 degrees relative to the lower cover (4) after being fixedly connected, and the inside of the lower cover (4) is provided with a triangular spring piece (5) limiting the teeth of the gear (25) after the upper cover (2) and the gear cover (3) are rotated and adjusted. A plurality of insertion columns (33) are arranged in a ring shape at equal distances on the small disc (32), and a plurality of positioning insertion holes (21) corresponding one-to-one to the insertion columns (33) are arranged in a ring shape at equal distances on the gear (25); 3. The pan-tilt-zoom camera head of claim 1, wherein: a plurality of mounting holes A (34) are arranged in a ring shape at equal distances on the gear cover (3) outside the insertion columns (33), and a plurality of mounting holes B (22) corresponding one-to-one to the mounting holes A (34) are arranged in a ring shape at equal distances on the gear (25); the gear cover (3) and the gear (25) are fixed together through screws penetrating the mounting holes A (34) and being screw-connected with the mounting holes B (22). The lower cover (4) is provided with a spring piece position (44) horizontally limiting the placement of the triangular spring piece (5), and the spring piece position (44) is provided with an opening (45) communicating with the first inner concave circular groove (41); the triangular spring piece (5) extends into the first inner concave circular groove (41) through the opening (45); 4. A projector gimbal according to claim 3, characterized in that: when the upper cover (2) and the gear cover (3) are rotated relative to the lower cover (4), the gear (25) extrudes the triangular spring piece (5) into the spring piece position (44), so that the triangular spring piece (5) does not affect the rotation of the upper cover (2) and the gear cover (3).

5. The pan-tilt-zoom camera head of claim 1, wherein: The outside bottom end of the triangular spring piece (5) is provided with a lower convex limiting insertion block (51) inserted into an insertion slot position (46) on the spring piece position (44).

6. The pan-tilt-zoom camera head of claim 1, wherein: The center of the gear cover (3), the upper cover (2) and the gear (25) is provided with a center circular hole (23).

7. The pan-tilt-zoom camera head of claim 1, wherein: A plurality of hexagonal mounting positions (24) are arranged in a ring shape at equal distances on the upper cover (2), and a projector is fixed on the top of the upper cover (2) through bolts penetrating the hexagonal mounting positions (24).

8. A pan and tilt unit for a projector according to claim 7, characterised in that: The bottom of the lower cover (4) is provided with two inverted U-shaped mounting feet (47) symmetrically arranged and having two ends inserted and positioned in cooperation with U-shaped supports, and the two mounting grooves (48) on the two sides of the lower cover (4) are inserted with insertion pins (1) extending into the inverted U-shaped mounting feet (47).

9. The pan-tilt-zoom camera head of claim 1, wherein: The insertion pin (1) is a frame type insertion block with a V-shaped groove (11) at the bottom. The outer edge of the lower cover (4) is limited inside a ring-shaped wrapping edge (26) on the upper cover (2).

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