A hinge structure for a foldable spectacles

Abstract

The utility model discloses a hinge structure of foldable glasses, including fixed seat, be equipped with the first limit piece on fixed seat, swing arm, be equipped with the first limit slot on swing arm, and the first limit piece is mutually supported and the first limit piece moves along the first limit slot, articulated shaft, articulated shaft is through fixed seat and swing arm simultaneously and is limited to stop in between articulated shaft and fixed seat, and articulated shaft is rotatably connected with swing arm, and fixed cam, movable cam and spring are successively installed on articulated shaft, and one end of fixed cam is clamped and located on swing arm and is rotatably connected with articulated shaft, and the other end of fixed cam is processed with a plurality of recess, and the convex that is matched with recess is processed on movable cam, and movable cam is slidably installed on articulated shaft and is limited to stop, and one end of spring abuts swing arm and pushes movable cam and engages with fixed cam. The device is simple to assemble, and the design of spring elastic force clamping two cams and combining convex and recess makes the torsional force of hinge structure stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of improved design technology of eyeglass hinge shafts, and in particular to a hinge structure for foldable eyeglasses. Background Technology

[0002] AI / AR / VR glasses, as virtual reality head-mounted display devices, utilize computer and the latest sensor technologies to create a novel human-computer interaction method. In the structure of AI / AR / VR glasses, the cable management hinge is a key component connecting the frame and temples, and also serves as a conduit for electrical connections between the electrical components in the temples and the frame. Existing AI / AR / VR glasses have a small bending radius. During frequent bending of the temples in daily use, the cables also bend frequently. Over time, the cables are prone to breakage due to the small bending radius, affecting the lifespan of the AI / AR / VR glasses. Furthermore, with ordinary hinge structures, the hinge area is prone to loosening after prolonged and repeated use. This not only reduces the damping effect during rotation, making the temples less stable when worn, but may also cause collisions and vibrations when forcefully closing the connecting parts, leading to component damage and further reducing product reliability and user experience. In addition, existing glasses require the cable management hinge to pass through pre-drilled holes during assembly, making the cables susceptible to damage and assembly inconvenient.

[0003] In the prior art, patent CN222825749U discloses a smart glasses, which includes a frame, temples, an optical engine, an electronic control component, a flexible conductive element, and a hinge assembly. The optical engine is located within the frame, the electronic control component is located within the temples, and the flexible conductive element electrically connects the optical engine and the electronic control component. The hinge assembly includes a first connector and a second connector hinged to each other. The first connector is fixedly connected to the frame, and the second connector is fixedly connected to the temples. The flexible conductive element has a movable section, one end of which is fixedly engaged with the first connector, and the other end is fixedly engaged with the second connector. This design effectively solves the problem of reduced overall reliability of AR glasses due to the inadequate fixation of the flexible circuit board at the hinge.

[0004] In order to solve one of the above problems, this application provides a hinge structure for foldable glasses. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a hinge structure for foldable glasses. The assembly process is simple. By using spring force to clamp two cams and combining the design of protrusions and grooves, the torque of the hinge structure is stable and reliable.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hinge structure for foldable glasses, including a fixing seat, wherein a first limiting block is provided on the fixing seat; A rotating arm is provided with a first limiting groove, the first limiting groove and a first limiting block cooperate with each other and the first limiting block moves along the first limiting groove; The hinge shaft passes through both the fixed base and the rotating arm, and limits and prevents rotation between the hinge shaft and the fixed base. The hinge shaft is rotatably connected to the rotating arm. A fixed cam, a movable cam, and a spring are sequentially mounted on the hinge shaft. One end of the fixed cam is engaged with the rotating arm and rotatably connected to the hinge shaft. The other end of the fixed cam is machined with multiple grooves. The movable cam is machined with protrusions that cooperate with the grooves. The movable cam is slidably mounted on the hinge shaft and limits and prevents rotation. One end of the spring abuts against the rotating arm and pushes the movable cam to mesh with the fixed cam.

[0007] Furthermore, as described above, the hinge shaft includes a rod portion, on which a waist-shaped flat portion is machined, and both the fixed seat and the movable cam are machined with waist-shaped holes that mate with the waist-shaped flat portion.

[0008] Furthermore, as described above, the first limiting groove includes an arc-shaped groove and a notch. The notch is machined at the edge of the rotating arm. The first limiting block moves along the notch into the arc-shaped groove and inserts the fixing seat into the outside of the rotating arm.

[0009] Furthermore, as described above, two first limiting grooves are symmetrically provided and machined on the outside of the side plate of the swing arm, and two first limiting blocks are symmetrically provided and machined on the inner wall of the fixed seat.

[0010] Furthermore, as described above, the rod ends are respectively provided with end caps and mounting grooves, and a retaining spring is clamped in the mounting groove; the movable cam is machined with two symmetrical protrusions, which are conical in shape, and the fixed cam is machined with four equally spaced grooves, which are flared in shape.

[0011] Furthermore, it also includes a driven cover and an FPC cable. The driven cover has a slot machined on it, which is snapped onto the rod. The FPC cable is located between the hinge shaft and the driven cover.

[0012] Furthermore, as described above, the rotating arm is provided with a first fixed plate and a second fixed plate, which are rotatably connected to the hinge shaft, and a fixed cam, a movable cam, and a spring are sequentially installed between them.

[0013] Furthermore, as described above, a first positioning groove is machined on the first fixed plate, and a positioning block is machined on one end of the fixed cam, the positioning block being fitted into the first positioning groove; the rotating arm is also provided with two locking grooves, and a driven cover is installed at the locking groove.

[0014] Furthermore, as described above, the mounting bracket is connected to the first frame by screws, and the rotating arm is connected to the first temple by screws.

[0015] Furthermore, as described above, the rotating arm is part of the second frame, on which a second limiting groove and a second positioning groove are machined. The fixed seat is part of the second temple, on which a second limiting block is machined. The second limiting block cooperates with the second limiting groove. The fixed cam is machined with a positioning block, which is fitted into the second positioning groove.

[0016] Compared with the prior art, the advantages of this utility model are: the assembly of this device is simple, and the design of the hinge structure with spring force clamping two cams and the combination of protrusions and grooves makes the torque of the hinge structure stable and reliable. Attached Figure Description

[0017] Figure 1 The three-dimensional representation of this utility model Figure 1 ; Figure 2 The three-dimensional representation of this utility model Figure 2 ; Figure 3 for Figure 2 Explosion illustration Figure 1 ; Figure 4 for Figure 2 Explosion illustration Figure 2 ; Figure 5 This is an open schematic diagram of Embodiment 1 of the present utility model; Figure 6 for Figure 5 Exploded view; Figure 7 for Figure 5 A closed diagram; Figure 8 This is an open schematic diagram of Embodiment 2 of the present invention; Figure 9 for Figure 8 Explosion Figure 1 ; Figure 10 for Figure 8 Explosion Figure 2 ; Figure 11 for Figure 8 A closed diagram.

[0018] In the diagram: 1. Rotary arm; 10. Locking slot; 11. First fixing plate; 110. First positioning slot; 12. Second fixing plate; 13. First limiting slot; 14. Side plate; 2. Fixing base; 23. First limiting block; 3. Driven cover; 30. Slot; 4. Hinge shaft; 40. End cap; 41. Rod; 42. Mounting slot; 43. Snap ring; 5. Movable cam; 51. Protrusion; 6. Fixed cam; 60. Positioning block; 61. Groove; 7. Spring; 8. FPC cable; 91. First frame; 92. First temple; 93. Second frame; 931. Second limiting slot; 932. Second positioning slot; 94. Second temple. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," "set," etc., should be interpreted broadly. For example, when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "installed" on another element, it can be directly installed on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within the two elements.

[0021] Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] Reference Figure 1-11 As shown, the hinge structure of a foldable eyeglasses according to this utility model includes a fixed base 2, a rotating arm 1, and a hinge shaft 4, wherein the hinge shaft 4 passes through both the fixed base 2 and the rotating arm 1. (Refer to...) Figure 5-7 It can be seen that the fixing base 2 is connected to the first frame 91 by screws, and the rotating arm 1 is connected to the first temple 92 by screws. Combined with... Figure 1-4 It is known that the fixed base 2 is provided with a first limiting block 23, and the rotating arm 1 is provided with a first limiting groove 13. The first limiting groove 13 and the first limiting block 23 cooperate with each other, and the movement of the first limiting block 23 along the first limiting groove 13 is used to limit the rotation angle of the rotating arm 1 relative to the fixed base 2. For the hinge shaft 4, there is a limit stop between the hinge shaft 4 and the fixed seat 2, that is, the hinge shaft 4 and the fixed seat 2 cannot rotate relative to each other. The hinge shaft 4 is rotatably connected to the rotating arm 1, that is, the hinge shaft 4 and the rotating arm 1 can rotate relative to each other. The hinge shaft 4 is sequentially fitted with a fixed cam 6, a movable cam 5 and a spring 7. One end of the fixed cam 6 is locked on the rotating arm 1 and rotatably connected to the hinge shaft 4, that is, the rotation of the rotating arm 1 can drive the fixed cam 6 to rotate around the hinge shaft 4. The other end of the fixed cam 6 is machined with multiple grooves 61. The movable cam 5 is machined with protrusions 51 that cooperate with the grooves 61. The movable cam 5 is slidably mounted on the hinge shaft 4 and limits the rotation. One end of the spring 7 abuts against the rotating arm 1 and pushes the movable cam 5 to mesh with the fixed cam 6. The rotating arm 1 rotates at a certain angle and drives the fixed cam 6 and the movable cam 5 to first separate and then mesh. With the help of the elastic force of the spring 7, the movable cam 5 and the fixed cam 6 are kept in a meshing state, maintaining the state of the rotating arm 1 and the fixed seat 2 after rotation.

[0024] Furthermore, the hinge shaft 4 includes a rod portion 41, on which a waist-shaped flat portion is machined. Both the fixed seat 2 and the movable cam 5 are machined with waist-shaped holes that mate with the waist-shaped flat portion. The rod portion 41 is originally a cylinder; the waist-shaped flat portion is obtained by machining two symmetrical planes along the axial direction of the rod portion 41. This allows the fixed seat 2 and the movable cam 5, when mounted on the rod portion 41, to rotate synchronously with the hinge shaft 4. The movable cam 5 can slide along the axial direction of the rod portion 41 with the aid of the spring force of the spring 7. In addition, the rod portion 41 has end caps 40 and mounting grooves 42 at both ends. A retaining spring 43 is fitted into the mounting groove 42. The outer diameters of both the end caps 40 and the retaining spring 43 are larger than the diameter of the rod portion 41. The rod portion 41 passes through the fixed seat 2 and the two side plates 14 of the rotating arm 1. The end caps 40 and the retaining spring 43 are located outside the fixed seat 2, used to restrict the axial movement of the hinge shaft 4.

[0025] Furthermore, the first limiting groove 13 includes an arc-shaped groove and a notch. The notch is machined at the edge of the side plate 14 of the rotating arm 1 and is used to install the first limiting block 23. This facilitates the movement of the first limiting block 23 along the notch into the arc-shaped groove, allowing the fixing seat 2 to be inserted into the outside of the two side plates 14 of the rotating arm 1. Specifically, two first limiting grooves 13 are symmetrically provided and machined on the outside of the side plates 14 of the rotating arm 1, and two first limiting blocks 23 are symmetrically provided and machined on the inner wall of the fixing seat 2. In addition, the angle limiting of the first limiting groove 13 generally needs to ensure that the frame and temple are in an open state. The angle range of the arc-shaped groove is selected as needed, and is generally designed to be 100 degrees.

[0026] Furthermore, the rotating arm 1 is provided with a first fixed plate 11 and a second fixed plate 12. The first fixed plate 11 and the second fixed plate 12 are rotatably connected to the hinge shaft 4, and a fixed cam 6, a movable cam 5, and a spring 7 are sequentially installed between them. That is, the first fixed plate 11 and the second fixed plate 12 are machined with circular holes that can accommodate the hinge shaft 4, and the hinge shaft 4 passes through the first fixed plate 11 and the second fixed plate 12. In addition, the first fixed plate 11 is machined with a first positioning groove 110, and one end of the fixed cam 6 is machined with a positioning block 60. The positioning block 60 is engaged in the first positioning groove 110, so that the rotation of the rotating arm 1 can drive the fixed cam 6 to rotate around the hinge shaft 4. In addition, the movable cam 5 is machined with two symmetrical protrusions 51, which are conical in shape. The fixed cam 6 is machined with four equally spaced grooves 61, which are flared in shape. The spring 7 provides stable torque by pressing the movable cam 5 and the fixed cam 6 together with the conical protrusions 51 / flared grooves 61. During operation, the hinge structure can automatically open and close at a specified angle. Specifically, when the fixed cam 6 rotates to an opening angle greater than 45 degrees, it will automatically open when meshing with the movable cam 5 in a downhill state. When closing, it will automatically close when the movable cam 5 is in a downhill state when the angle is less than 45 degrees.

[0027] The hinge structure of this application also includes a driven cover 3 and an FPC cable 8. The driven cover 3 has a slot 30 machined on it, which is engaged with the rod 41. The FPC cable 8 is located between the hinge shaft 4 and the driven cover 3. The FPC cable 8 is a readily available and mature component, and will not be described in detail here. Furthermore, the rotating arm 1 is also provided with two locking slots 10. Each locking slot 10 is a cavity formed between the first fixing plate 11 and the second fixing plate 12 and the two side plates 14 of the rotating arm 1, respectively. The driven cover 3 is installed at the locking slot 10, meaning the slot 30 of the driven cover 3 is engaged with the rod 41 at the locking slot 10. The slot 30 is a combination of a flat inlet and a round hole. The flat inlet of the slot 30 allows the slot 30 to enter along the waist-shaped flat section of the rod 41, while the slot 30... The round hole is locked onto the rod 41, allowing the slot 30 to be rotatably connected to the rod 41. The driven cover 3 can also rotate around the hinge shaft 4 as the rotating arm 1 rotates. The FPC cable 8 is driven to fold and is limited by the driven cover 3, moving together. After the hinge structure is assembled, the FPC cable 8 and the driven cover 3 are installed in sequence. The driven cover 3 has a flared slot 30, which can automatically lock the hinge shaft 4 after installation. By installing the FPC cable 8 later, the production capacity and yield are increased. Example 2

[0028] Reference Figure 8-11 As shown, a hinge structure for foldable glasses differs from the technical solution of Embodiment 1 in that the rotating arm 1 and the fixed seat 2 of this hinge structure are respectively part of the second frame 93 and the second temple 94. Specifically, the second frame 93 is machined with a second limiting groove 931 and a second positioning groove 932. The second limiting groove 931 is located on the outer sides of the second frame 93, and its structural design is similar to the first limiting groove 13. The second positioning groove 932 is located on the inner wall of one side of the second frame 93, and its structural design is similar to the first positioning groove 110. The second temple 94 is machined with a second limiting block, which cooperates with the second limiting groove 931. The second limiting block is located on the inner walls of both sides of the second temple 94, and its structural design is similar to the first limiting block 23. The fixed cam 6 is machined with a positioning block 60, which is fitted into the second positioning groove 932.

[0029] The working principle of this utility model device is as follows: the hinge structure always maintains a 0-degree state when the frame and temple are in the open state, and continuously maintains a 0-degree angle correction. That is, the spring 7 pushes the protrusion 51 of the movable cam 5 to engage with the bottom of the groove 61 of the fixed cam 6. This function can meet the needs of comfortable wearing of glasses.

[0030] In this utility model device, the assembly and cooperation relationships of the various components involved, such as spring 7, FPC cable 8 and screws, are existing technologies or materials. The relevant technical personnel can directly purchase or order them from the market according to the required product model and specifications.

[0031] The above description is merely a preferred embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It is obvious to those skilled in the art that this utility model is not limited to the details of the above embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A hinge structure for foldable eyeglasses, characterized in that, Includes a fixed base (2), on which a first limiting block (23) is provided; A rotating arm (1) is provided with a first limiting groove (13), the first limiting groove (13) and the first limiting block (23) cooperate with each other and the first limiting block (23) moves along the first limiting groove (13); The hinge shaft (4) passes through both the fixed seat (2) and the rotating arm (1) and limits the rotation between the hinge shaft (4) and the fixed seat (2). The hinge shaft (4) is rotatably connected to the rotating arm (1). A fixed cam (6), a movable cam (5) and a spring (7) are sequentially mounted on the hinge shaft (4). One end of the fixed cam (6) is locked on the rotating arm (1) and rotatably connected to the hinge shaft (4). The other end of the fixed cam (6) is machined with multiple grooves (61). The movable cam (5) is machined with protrusions (51) that cooperate with the grooves (61). The movable cam (5) is slidably mounted on the hinge shaft (4) and limits the rotation. One end of the spring (7) abuts against the rotating arm (1) and pushes the movable cam (5) to mesh with the fixed cam (6).

2. The hinge structure of a foldable eyeglasses according to claim 1, characterized in that, The hinge shaft (4) includes a rod (41), on which a waist-shaped flat part is machined. The fixed seat (2) and the movable cam (5) are both machined with waist-shaped holes that match the waist-shaped flat part.

3. The hinge structure for foldable glasses according to claim 2, characterized in that, The first limiting groove (13) includes an arc groove and a notch. The notch is machined at the edge of the rotating arm (1). The first limiting block (23) moves along the notch into the arc groove and inserts the fixing seat (2) into the outside of the rotating arm (1).

4. The hinge structure of a foldable eyeglasses according to claim 3, characterized in that, The first limiting groove (13) is symmetrically provided in two places and is machined on the outside of the side plate (14) of the rotating arm (1), and the first limiting block (23) is symmetrically provided in two places and is machined on the inner wall of the fixed seat (2).

5. The hinge structure of a foldable eyeglasses according to claim 4, characterized in that, The rod (41) is provided with an end cap (40) and a mounting groove (42) at both ends, and a retaining spring (43) is fitted on the mounting groove (42); the movable cam (5) is machined with two symmetrical protrusions (51), the protrusions (51) are conical structures, and the fixed cam (6) is machined with four equally spaced grooves (61), the grooves (61) are flared structures.

6. The hinge structure of a foldable eyeglasses according to claim 5, characterized in that, It also includes a driven cover (3) and an FPC cable (8). The driven cover (3) has a slot (30) machined on it. The slot (30) is fitted onto the rod (41). The FPC cable (8) is located between the hinge shaft (4) and the driven cover (3).

7. The hinge structure of a foldable eyeglasses according to any one of claims 2-6, characterized in that, The rotating arm (1) is provided with a first fixed plate (11) and a second fixed plate (12). The first fixed plate (11) and the second fixed plate (12) are rotatably connected to the hinge shaft (4), and a fixed cam (6), a movable cam (5) and a spring (7) are installed between them in sequence.

8. The hinge structure of a foldable eyeglasses according to claim 7, characterized in that, The first fixed plate (11) is machined with a first positioning groove (110), and a positioning block (60) is machined at one end of the fixed cam (6). The positioning block (60) is fitted into the first positioning groove (110). The rotating arm (1) is also provided with two locking grooves (10), and a driven cover (3) is installed at the locking groove (10).

9. The hinge structure of a foldable eyeglasses according to claim 8, characterized in that, The fixed base (2) is connected to the first frame (91) by screws, and the rotating arm (1) is connected to the first temple (92) by screws.

10. The hinge structure of a foldable eyeglasses according to any one of claims 2-6, characterized in that, The rotating arm (1) is part of the second frame (93), and the second frame (93) is machined with a second limiting groove (931) and a second positioning groove (932). The fixed seat (2) is part of the second temple (94), and the second temple (94) is machined with a second limiting block. The second limiting block cooperates with the second limiting groove (931). The fixed cam (6) is machined with a positioning block (60), and the positioning block (60) is fitted into the second positioning groove (932).

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