AR projection display rotating shaft

Abstract

The utility model discloses an AR projection rotating shaft, which comprises a shell used for being fixedly connected with an AR glasses frame, a rotating support used for being fixedly connected with AR glasses legs and a rotating shaft assembly, and one end of the rotating support is rotatably connected with one end of the shell through the rotating shaft assembly. One end of the shell comprises an upper connecting arm and a lower connecting arm which are connected to the rotating shaft assembly and oppositely arranged at intervals, and one end of the rotating support comprises an upper rotating supporting arm and a lower rotating supporting arm which are rotationally connected to the two ends of the rotating shaft assembly and oppositely arranged at intervals. A rotating shaft cavity for installing a rotating shaft assembly is formed between the inner side of the front face of the rotating support and the upper rotating supporting arm and the lower rotating supporting arm, the rotating shaft assembly comprises a threaded upper ball shaft, a lifting block, an elastic piece and a lower ball shaft, and arc-shaped grooves are formed in the inner end face of the upper rotating supporting arm and the inner end face of the lower rotating supporting arm in an inward concave mode respectively. According to the utility model, rotation fine tuning of any angle of the AR projection rotating shaft can be realized, friction damping and adjustment damping can be generated in the rotation fine tuning process, and the experience feeling is good.

Description

Technical Field

[0001] The utility model relates to the technical field of AR glasses, and more specifically, to an AR projection display rotating shaft. Background Art

[0002] Augmented Reality (AR) is a technology that calculates the position and angle of a camera image in real time and adds corresponding images. An AR glasses is a wearable device that combines virtual information with the real world. Generally, there is a projection display in front of its frame, and the projection display can superimpose virtual information onto the user's field of view. However, the projection display rotating shaft structures of many AR glasses on the market only allow rotation within some specific ranges and cannot achieve full-range or arbitrary-angle adjustment, resulting in poor flexibility and easily causing an unsatisfactory viewing angle when users use them in different environments. Moreover, the projection display rotating shaft structures on the market generally lack damping adjustment effects, which may cause the projection display screen to be unstable during rotation, or the screen may be disturbed when moving or rotating quickly, affecting the viewing experience. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned defects in the prior art and provide an AR projection display rotating shaft that can achieve arbitrary-angle rotational fine adjustment of the AR projection display rotating shaft, generate damping, has a long service life, and enhances the user experience.

[0004] To achieve the above purpose, the utility model provides an AR projection display rotating shaft, which includes a housing for fixedly connecting an AR glasses frame, a rotating bracket for fixedly connecting an AR glasses temple, and a rotating shaft assembly. One end of the rotating bracket is rotatably connected to one end of the housing through the rotating shaft assembly. One end of the housing includes an upper connecting arm and a lower connecting arm that are connected to the rotating shaft assembly and are relatively spaced apart. One end of the rotating bracket includes an upper rotating arm and a lower rotating arm that are rotatably connected to both ends of the rotating shaft assembly and are relatively spaced apart. A rotating shaft cavity for installing the rotating shaft assembly is formed between the inner side of the front surface of the rotating bracket and the upper rotating arm and the lower rotating arm. The rotating shaft assembly includes a threaded upper ball shaft, a lifting block, an elastic member, and a lower ball shaft. The inner end surfaces of the upper rotating arm and the lower rotating arm are respectively recessed inwardly with arc-shaped grooves. The arc-shaped surface at the top of the threaded upper ball shaft is in sliding contact with the inner wall of the arc-shaped groove of the upper rotating arm. The bolt portion at the end of the threaded upper ball shaft passes through the first through hole of the upper connecting arm and is threadedly connected to the threaded hole at the top of the lifting block. The arc-shaped surface at the bottom of the lower ball shaft is in sliding contact with the inner wall of the arc-shaped groove of the lower rotating arm. A moving hole is formed in the shaft body portion at the top of the lower ball shaft. The shaft body portion at the top of the lower ball shaft passes through the second through hole of the lower connecting arm and is in limit contact with the inner wall of the second through hole. The upper connecting arm and the lower connecting arm are respectively located at the upper and lower ends of the lifting block. A convex column protrudes from the bottom of the lifting block. The convex column passes through the elastic member and is inserted into the moving hole of the lower ball shaft passing through the lower connecting arm.

[0005] Preferably, the shape of the first through hole is set as a first kidney-shaped hole, the shape of the outer wall surface of the second through hole is set as a second kidney-shaped hole, and the shape of the shaft body part of the lower ball shaft corresponds to the shape of the second kidney-shaped hole.

[0006] Preferably, a limiting block for restricting the rotation of the shaft body part of the lower ball shaft is formed and protruded in the middle of the inner wall of the second through hole.

[0007] Preferably, the opening direction of the first through hole is perpendicular to the opening direction of the second through hole.

[0008] Preferably, the opening area of the first through hole is smaller than the opening area of the second through hole.

[0009] Preferably, the elastic member is set as two axially stacked disc springs.

[0010] Preferably, the rotary bracket is inclined from top to bottom relative to the front surface of the housing, the top surface of the upper rotary arm is inclined upward from front to back, and the lower rotary arm is inclined upward from the end close to the housing to the end far from the housing.

[0011] Preferably, the thickness of the upper rotary arm is smaller than the thickness of the lower rotary arm.

[0012] Preferably, the other end of the rotary bracket for connecting the temple of the AR glasses is provided with two columnar connecting arms arranged in parallel and at intervals.

[0013] Preferably, the other end of the housing for connecting the frame of the AR glasses is provided with two square connecting arms arranged in parallel and at intervals.

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

[0015] The structure of the present utility model is simple and reasonably designed. The rotary bracket is rotatably connected to the housing through a rotating shaft assembly, and the housing can also be finely adjusted at any angle in the rotating shaft cavity of the rotary bracket through the rotating shaft assembly. During the fine adjustment of the rotation of the housing, the sliding contact between the arc-shaped surfaces of the upper rotary arm and the lower rotary arm and the arc-shaped groove generates frictional damping, and the lifting block can also squeeze or release the elastic member, thereby generating adjustment damping, taking into account mechanical properties and compactness, and having a long service life, enabling users to have a better immersion and interaction experience. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a front view schematic diagram of an AR projection display rotating shaft provided by an embodiment of the present invention;

[0018] Figure 2 It is an isometric view schematic diagram of an AR projection display rotating shaft provided by an embodiment of the present invention;

[0019] Figure 3 It is an exploded view schematic diagram of an AR projection display rotating shaft provided by an embodiment of the present invention;

[0020] Figure 4 It is an exploded view schematic diagram of a rotating shaft assembly of an AR projection display rotating shaft provided by an embodiment of the present invention;

[0021] Figure 5 It is a schematic diagram of the housing structure of an AR projection display rotating shaft provided by an embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of the rotating bracket structure of an AR projection display rotating shaft provided by an embodiment of the present invention;

[0023] Figure 7 It is a schematic diagram of the working state of the rotating bracket of an AR projection display rotating shaft provided by an embodiment of the present invention Figure 1 ;

[0024] Figure 8 It is a schematic diagram of the working state of the rotating bracket of an AR projection display rotating shaft provided by an embodiment of the present invention Figure 2 ;

[0025] Figure 9 It is a schematic diagram of the working state of the rotating bracket of an AR projection display rotating shaft provided by an embodiment of the present invention Figure 3 ;

[0026] Figure 10 It is a schematic diagram of the working state of the rotating bracket of an AR projection display rotating shaft provided by an embodiment of the present invention Figure 4 ;

[0027] Figure 11 It is a schematic diagram of the working state of the rotating bracket of an AR projection display rotating shaft provided by an embodiment of the present invention Figure 5 ;

[0028] Figure 12Schematic of the working state of the rotating bracket of an AR projection display shaft provided by an embodiment of the present utility model Figure 6 。 Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figure 1 , an embodiment of the present utility model provides an AR projection display shaft, including a housing 1 for fixedly connecting an AR glasses frame, a rotating bracket 2 for fixedly connecting an AR glasses temple, and a shaft assembly 3. The following will describe each component of this embodiment in detail with reference to the accompanying drawings.

[0031] As Figure 1 and Figure 2 shown, one end of the rotating bracket 2 can be rotatably connected to one end of the housing 1 through the shaft assembly 3. One end of the housing 1 includes an upper connecting arm 11 and a lower connecting arm 12 that are connected to the shaft assembly 3 and are relatively spaced apart. One end of the rotating bracket 2 includes an upper rotating arm 21 and a lower rotating arm 22 that are rotatably connected to both ends of the shaft assembly 3 and are relatively spaced apart. A shaft cavity 23 for installing the shaft assembly 3 is formed between the inner side of the front surface of the rotating bracket 2 and the upper rotating arm 21 and the lower rotating arm 22.

[0032] As Figure 3 and Figure 4As shown in the figure, the rotating shaft assembly 3 may include a threaded upper ball shaft 31, a lifting block 32, an elastic member 33, and a lower ball shaft 34. The inner end faces of the upper rotating arm 21 and the lower rotating arm 22 are respectively recessed inwardly with arc-shaped grooves 24. The arc-shaped surface at the top of the threaded upper ball shaft 31 is in sliding contact with the inner wall of the arc-shaped groove 24 of the upper rotating arm 21. The bolt portion 311 at the end of the threaded upper ball shaft 31 passes through the first through hole 110 of the upper connecting arm 11 and is threadedly connected to the threaded hole 321 at the top of the lifting block 32. The arc-shaped surface at the bottom of the lower ball shaft 34 is in sliding contact with the inner wall of the arc-shaped groove 24 of the lower rotating arm 22. An activity hole 342 is formed in the shaft body portion 341 at the top of the lower ball shaft 34. The shaft body portion 341 at the top of the lower ball shaft 34 passes through the second through hole 120 of the lower connecting arm 12 and is in limit contact with the inner wall of the second through hole 120. The upper connecting arm 11 and the lower connecting arm 12 are respectively located at the upper and lower ends of the lifting block 32. A convex column 322 protrudes from the bottom of the lifting block 32. The convex column 322 passes through the elastic member 33 and is inserted into the activity hole 342 of the lower ball shaft 34 passing through the lower connecting arm 12.

[0033] During specific implementation, the arc-shaped surfaces of the threaded upper ball shaft 31 and the lower ball shaft 34 can rotate at any angle in the arc-shaped grooves 24 of the corresponding upper rotating arm 21 and lower rotating arm 22 respectively and can tilt and swing in any axial direction. And due to the frictional damping generated by the sliding contact between the arc-shaped surfaces and the arc-shaped grooves 24, and because there are structural limitations between the two in sliding contact, the threaded upper ball shaft 31 and the lower ball shaft 34 will not break out of their corresponding arc-shaped grooves 23, so that the projection of the AR glasses frame can realize fine adjustment of rotation at any angle to ensure the best projection and viewing effects.

[0034] Among them, the convex column 322 of the lifting block 32 is movably inserted into the activity hole 342 and moves up and down with the elastic deformation of the elastic member 33 during adjustment to achieve flexible adjustment.

[0035] Specifically, the shape of the first through hole 110 can be set as a first waist-shaped hole, the outer wall surface shape of the second through hole 120 is set as a second waist-shaped hole, and the shape of the shaft body portion 341 of the lower ball shaft 34 corresponds to the shape of the second waist-shaped hole.

[0036] Preferably, the opening area of the first through hole 110 is smaller than the opening area of the second through hole 120.

[0037] As Figure 5 shown, a limiting block 121 for restricting the rotation of the shaft body portion 341 of the lower ball shaft 34 can be formed and protruded in the middle of the inner wall of the second through hole 120. The limiting block 121 prevents the shaft body portion 341 of the lower ball shaft 34 from freely rotating and displacing during use, ensuring its fine adjustment at a predetermined position.

[0038] Preferably, the opening direction of the first through hole 110 can be set perpendicular to the opening direction of the second through hole 120.

[0039] Furthermore, the design of the first kidney-shaped hole and the second kidney-shaped hole can provide support and positioning for the connection between the upper connecting arm 11 and the lower connecting arm 12 and the rotating shaft assembly 3.

[0040] In this embodiment, the elastic member 33 can preferably be set as two axially stacked disc springs. Among them, the disc spring has a small volume and can provide a large elastic force in the radial space by stacking two disc springs. It can also absorb and buffer vibrations, has strong durability and a long service life.

[0041] As Figure 6 shown, the rotating bracket 2 can be inclined from top to bottom relative to the front surface of the housing 1. The top surface of the upper rotating arm 21 is inclined upward from front to back, and the lower rotating arm 22 is inclined upward from the end close to the housing 1 to the end far from the housing 1.

[0042] Preferably, the thickness of the upper rotating arm 21 can be less than the thickness of the lower rotating arm 22. Among them, the thinner upper rotating arm 21 can provide flexibility and help with rotation operations at different angles. The lower rotating arm 22 can provide higher strength and stability to bear the load and stress from the temple.

[0043] Specifically, two parallel and spaced cylindrical connecting arms 25 can be provided at the other end of the rotating bracket 2 for connecting the temple of the AR glasses. The cylindrical connecting arms 25 can be used to install the folding mechanism of the temple to meet the user's portable storage requirements for the AR glasses.

[0044] Two parallel and spaced square connecting arms 13 can be provided at the other end of the housing 1 for connecting the frame of the AR glasses. The square connecting arms 13 can improve the stability of the installation of the projection display screen.

[0045] As Figure 7 and Figure 12 shown is a schematic diagram of the working state of the AR projection display rotating shaft. Among them, Figures 7 to 9 shown is the inclined swing and vertical state of the housing 1 in the axial direction between the upper rotating arm 21 and the lower rotating arm 22 through the rotating shaft assembly 3. Figures 10 to 12 shown is the rotating state of the rotating bracket 2 relative to the housing 1 through the rotating shaft assembly 3.

[0046] In summary, the rotating bracket of the present utility model is rotatably connected to the housing through a rotating shaft assembly. The housing can also achieve fine adjustment of rotation at any angle in the rotating shaft cavity of the rotating bracket through the rotating shaft assembly. During the process of fine adjustment of the rotation of the housing, the sliding contact between the arc surfaces of the upper rotating arm and the lower rotating arm and the arc grooves generates frictional damping, and the lifting block can also squeeze or release the elastic member, thereby generating adjustment damping, taking into account mechanical properties and compactness, with a long service life, enabling users to have a better sense of immersion and interaction experience.

[0047] The above embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.

Claims

1. An AR projection display rotating shaft, characterized in that: It includes a housing (1) for fixedly connecting the frame of the AR glasses, a rotating bracket (2) for fixedly connecting the temple of the AR glasses, and a rotating shaft assembly (3). One end of the rotating bracket (2) is rotatably connected to one end of the housing (1) through the rotating shaft assembly (3). One end of the housing (1) includes an upper connecting arm (11) and a lower connecting arm (12) which are connected to the rotating shaft assembly (3) and are relatively spaced apart. One end of the rotating bracket (2) includes an upper rotating arm (21) and a lower rotating arm (22) which are rotatably connected to both ends of the rotating shaft assembly (3) and are relatively spaced apart. A rotating shaft cavity (23) for installing the rotating shaft assembly (3) is formed between the inner side of the front surface of the rotating bracket (2) and the upper rotating arm (21) and the lower rotating arm (22). The rotating shaft assembly (3) includes a threaded upper ball shaft (31), a lifting block (32), an elastic member (33), and a lower ball shaft (34). The inner end surfaces of the upper rotating arm (21) and the lower rotating arm (22) are respectively concavely provided with arc-shaped grooves (24) relatively inward. The arc-shaped surface at the top of the threaded upper ball shaft (31) is in sliding contact with the inner wall of the arc-shaped groove (24) of the upper rotating arm (21). The bolt portion (311) at the end of the threaded upper ball shaft (31) passes through the first through hole (110) of the upper connecting arm (11) and is threadedly connected to the threaded hole (321) at the top of the lifting block (32). The arc-shaped surface at the bottom of the lower ball shaft (34) is in sliding contact with the inner wall of the arc-shaped groove (24) of the lower rotating arm (22). An activity hole (342) is formed in the shaft body portion (341) at the top of the lower ball shaft (34). The shaft body portion (341) at the top of the lower ball shaft (34) passes through the second through hole (120) of the lower connecting arm (12) and is in limit contact with the inner wall of the second through hole (120). The upper connecting arm (11) and the lower connecting arm (12) are respectively located at the upper and lower ends of the lifting block (32). A convex column (322) protrudes from the bottom of the lifting block (32). The convex column (322) passes through the elastic member (33) and is inserted into the activity hole (342) of the lower ball shaft (34) passing through the lower connecting arm (12).

2. The AR projection display rotating shaft according to claim 1, characterized in that: The shape of the first through hole (110) is set as a first waist-shaped hole, the outer wall surface shape of the second through hole (120) is set as a second waist-shaped hole, and the shape of the shaft body portion (341) of the lower ball shaft (34) corresponds to the shape of the second waist-shaped hole.

3. An AR projection display rotating shaft according to claim 1, characterized in that: A limiting block (121) for restricting the rotation of the shaft body portion (341) of the lower ball shaft (34) is formed and protruded in the middle of the inner wall of the second through hole (120).

4. An AR projection display rotating shaft according to claim 1, characterized in that: The opening direction of the first through hole (110) is set perpendicular to the opening direction of the second through hole (120).

5. An AR projection display rotating shaft according to claim 1, characterized in that: The opening area of the first through hole (110) is smaller than the opening area of the second through hole (120).

6. The AR projection display rotating shaft according to claim 1, wherein: The elastic member (33) is set as two axially stacked disc springs.

7. An AR projection display rotating shaft according to claim 1, characterized in that: The rotating bracket (2) is arranged obliquely downward from top to bottom relative to the front surface of the housing (1). The top surface of the upper rotating arm (21) is arranged obliquely upward from front to back, and the lower rotating arm (22) is arranged obliquely upward from the end close to the housing (1) to the end far from the housing (1).

8. An AR projection display rotating shaft according to claim 1, characterized in that: The thickness of the upper rotating arm (21) is less than that of the lower rotating arm (22).

9. The AR projection display rotating shaft according to claim 1, characterized in that: At the other end of the rotating bracket (2) for connecting the temple of the AR glasses, there are two cylindrical connecting arms (25) arranged in parallel and at intervals.

10. An AR projection display rotating shaft according to claim 1, characterized in that: At the other end of the housing (1) for connecting the frame of the AR glasses, there are two square connecting arms (13) arranged in parallel and at intervals.

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