Spectacle case hinge structure

Abstract

The invention belongs to the technical field of glasses boxes, and discloses a glasses box hinge structure which comprises a box body, a first hinge piece is fixed to one side of the box body, a second hinge piece is rotatably connected to one side of the first hinge piece, a box cover is fixed to one side of the second hinge piece, and a hollow shaft is movably connected to the inner side of the first hinge piece and the inner side of the second hinge piece. The inner side of the hollow shaft is slidably provided with an upper connecting rod, the inner side of the hollow shaft is slidably provided with a lower connecting rod, the inner side of the upper connecting rod is rotatably provided with a rotating rod, the outer side of the rotating rod is fixedly provided with a clamping block, one end of the upper connecting rod is fixedly provided with a limiting block, one end of the rotating rod is slidably connected with a core rod, and the outer side of the core rod is fixedly provided with a positioning gear. A positioning tooth groove is formed in one side of the upper connecting rod, a support is fixed to one side of the upper connecting rod, an adjusting button is fixed to the upper end of the core rod, a clamping groove is formed in one end of the lower connecting rod, and a limiting groove is formed in one side of the lower connecting rod. The spectacle frame has the beneficial effects that the hinged part is convenient to lubricate and replace, and the spectacles are convenient to take.

Description

Technical Field

[0001] The present application relates to the technical field of glasses cases, and more specifically, to a hinge structure of a glasses case. Background Art

[0002] In its original sense, a glasses case is a box for glasses. It plays a vital role in people's daily lives. It can protect glasses. With the rapid development of science and technology, people's requirements for it are getting higher and higher, and there are various types of glasses cases.

[0003] When using the glasses case in real life, the case body and the case cover rotate, and the hinges will be worn during the rotation. Over time, the hinges will be difficult or loose to rotate, affecting the service life, so that it is necessary to apply lubricating oil or grease to them. In severe cases, the hinges even need to be replaced. However, the joints of the hinges of the existing glasses cases mostly have small gaps, which is inconvenient to apply lubricating oil, and the hinges are fixedly installed on the case body and the case cover, and screws or rivets need to be removed for replacement, and the entire hinge needs to be removed for replacement, which makes disassembly and replacement inconvenient. Summary of the invention

[0004] In order to solve the above problems, the present application provides a hinge structure for a glasses case.

[0005] The present application provides a spectacles case hinge structure adopts the following technical solution:

[0006] The cam is connected with the locking cam on one side of the hinge part, and the locking cam is connected with the hinge part on the other side of the hinge part, and the locking cam is connected with the hinge part on the other side of the hinge part.

[0007] Furthermore, a rotating connection structure is formed between the hinge part 1 and the hinge part 2 through a hollow shaft, and the hollow shaft is a cylindrical structure, and the hollow shaft is adapted to the hinge part 1 and the hinge part 2.

[0008] Through the above technical solution, the hollow shaft can be inserted into the hinge part 1 and the hinge part 2, so that the hinge part 1 and the hinge part 2 can be rotatably connected, thereby realizing the rotatable connection between the box cover and the box body.

[0009] Furthermore, two clamping blocks are symmetrically arranged, and the clamping block is arranged at one end of the rotating rod close to the lower connecting rod, and the rotating rod and the clamping block are adapted to the clamping slot.

[0010] Through the above technical solution, the rotating rod can be clamped in the clamping groove, so that the rotating rod can fix the upper connecting rod and the lower connecting rod.

[0011] Furthermore, two limit blocks are symmetrically arranged, and the limit blocks are fixedly arranged at one end of the upper connecting rod close to the lower connecting rod and are adapted to the limit grooves.

[0012] Through the above technical solution, the upper connecting rod and the lower connecting rod can be relatively fixed in the circumferential direction.

[0013] Furthermore, the rotating rod and the core rod are relatively fixed in the circumferential direction, and the core rod and the rotating rod are telescopically slidably adjusted. The upper end of the core rod passes through the upper part of the bracket and is movably connected to the bracket.

[0014] Through the above technical solution, the rotating rod and the core rod can rotate synchronously.

[0015] Furthermore, one end of the spring away from the bracket contacts the positioning gear, the spring is sleeved on the outside of the core rod, and the positioning gear is meshed with the positioning tooth groove.

[0016] Through the above technical solution, the core rod can drive the positioning gear to perform elastic telescopic adjustment.

[0017] Furthermore, one side of the box cover is rotatably connected to a pull rod, one side of the box body is fixed with a sliding rod 1, a slider is slidably arranged on the outer side of the sliding rod 1, an end of the pull rod away from the box cover is rotatably mounted on a side surface of the slider, and a roller is rotatably mounted on one side of the slider.

[0018] Through the above technical solution, when the box cover rotates, it can drive the pull rod to move, so that the pull rod drives the slider to slide and adjust on the surface of the sliding rod.

[0019] Furthermore, a sliding rod 2 is fixed on one side of the box body, an inclined block slides on the outer side of the sliding rod 2, a spring 2 is fixed on one side of the inclined block, one end of the spring 2 away from the inclined block is fixed to a side surface of the box body, and the roller contacts one side of the inclined block.

[0020] Through the above technical solution, spring two can apply elastic force to the inclined block, so that the inclined block moves to the side away from spring two in a natural state. Under the action of the roller, the inclined block drives the slider to move to the side away from the box cover, so that the box cover rotates to overlap with the box body under the action of the pull rod.

[0021] Furthermore, a rack is fixed on one side of the inclined block, a transmission gear is rotatably disposed on one side of the box body, and the rack and the transmission gear are meshed with each other.

[0022] Through the above technical solution, the movement of the inclined block can drive the movement of the rack, and the rack can drive the rotation of the gear.

[0023] Furthermore, a transmission rod is fixed on one side of the transmission gear, a limit rod is rotated on one side of the transmission rod, a vertical rod is fixed on the inner side of the box body, a placement groove is slidably provided on the outer side of the vertical rod, a fixing rod is fixed on one side of the placement groove, a fixing plate is fixed on one end of the fixing rod, a sliding groove is opened on one side of the fixing plate, and the limit rod is slidably connected to the sliding groove.

[0024] Through the above technical solution, the rotation of the gear can drive the rotation of the transmission rod, so that the transmission rod can drive the fixed plate to slide up and down under the sliding connection of the limit rod and the slide groove.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. By adapting the provided clamping block and the limiting groove, the upper connecting rod and the lower connecting rod can be relatively fixed in the circumferential direction. By providing a spring 1, an elastic force can be applied to the positioning gear, so that the positioning gear and the positioning tooth groove are meshed with each other, and the circumferential direction of the positioning gear is fixed, so that the core rod and the rotating rod are circumferentially fixed, thereby realizing the fixed connection between the upper connecting rod and the lower connecting rod, making the connection of the hinged member simple, pulling the adjusting knob backward to release the circumferential fixation of the rotating rod and the core rod, turning the adjusting knob to separate the rotating rod from the lower connecting rod, making it easy to disassemble the upper connecting rod and the lower connecting rod, so that when the connecting part of the hinged member needs to be lubricated, it is convenient to add lubricating oil, or when it needs to be replaced, it is convenient to disassemble and install it;

[0027] 2. By setting the pull rod, when the box cover is opened, under the action of the pull rod, the slider can be driven to slide and adjust to one side of the box cover, and the sliding of the slider can drive the roller to move, so that the roller drives the inclined block to slide to the side of the box cover on the surface of the sliding rod 2, and the inclined block drives the rack to slide to the side of the box cover, so that the rack drives the transmission gear meshing with it to rotate, and the transmission gear drives the transmission rod to rotate. Under the action of the sliding connection between the limit rod and the slide groove, the rotation of the transmission rod can drive the fixed plate to slide upward, so that the placement groove rises upward, making it convenient for people to pick up glasses. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the three-dimensional structure of this application;

[0029] Figure 2 This is a schematic diagram of the three-dimensional structure of the present application without the placement slot;

[0030] Figure 3 It is a schematic diagram of the assembly structure of hinge part 1 and hinge part 2 in this application;

[0031] Figure 4 This is an enlarged three-dimensional structural diagram of point A of this application;

[0032] Figure 5 This is an enlarged three-dimensional structural diagram of B in this application;

[0033] Figure 6 This is an enlarged three-dimensional structural diagram of position C of this application;

[0034] Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the upper connecting rod in this application.

[0035] Description of the numbers in the figure:

[0036] 1. Box body; 2. Hinge 1; 3. Hinge 2; 4. Box cover; 5. Hollow shaft; 6. Upper connecting rod; 7. Lower connecting rod; 8. Rotating rod; 9. Clamping block; 10. Limiting block; 11. Core rod; 12. Positioning gear; 13. Positioning tooth groove; 14. Bracket; 15. Spring 1; 16. Adjusting button; 17. Clamping slot; 18. Limiting slot; 19. Pull rod; 20. Sliding rod 1; 21. Sliding block; 22. Roller; 23. Sliding rod 2; 24. Oblique block; 25. Spring 2; 26. Rack; 27. Transmission gear; 28. Transmission rod; 29. ​​Limiting rod; 30. Vertical rod; 31. Placement slot; 32. Fixing rod; 33. Fixing plate; 34. Sliding slot. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0038] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more schemes or examples in a suitable manner.

[0042] Embodiment 1:

[0043] See also Figure 1-7A glasses case hinge structure, comprising a box body 1, a hinge part 2 is fixed on one side of the box body 1, a hinge part 2 is rotatably connected to one side of the hinge part 2, a box cover 4 is fixed on one side of the hinge part 2, a hollow shaft 5 is movably connected to the inner side of the hinge part 2 and the hinge part 2, an upper connecting rod 6 is slidably provided on the inner side of the hollow shaft 5, a lower connecting rod 7 is slidably provided on the inner side of the hollow shaft 5, a rotating rod 8 is rotatably provided on the inner side of the upper connecting rod 6, a clamping block 9 is fixed on the outer side of the rotating rod 8, a limiting block 10 is fixed to one end of the upper connecting rod 6, and one end of the rotating rod 8 is fixed to a limiting block 10. A core rod 11 is slidably connected, a positioning gear 12 is fixed to the outside of the core rod 11, a positioning tooth groove 13 is provided on one side of the upper connecting rod 6, a bracket 14 is fixed to one side of the upper connecting rod 6, a spring 15 is provided on one side of the bracket 14, and the spring 15 can drive the positioning gear 12 to move closer to the upper connecting rod 6 in a natural state until the positioning gear 12 is separated from the positioning tooth groove 13, an adjusting button 16 is fixed to the upper end of the core rod 11, a slot 17 is provided at one end of the lower connecting rod 7, and a limiting slot 18 is provided on one side of the lower connecting rod 7.

[0044] In this embodiment, the hinge part 1 2 and the hinge part 2 3 are connected by the hollow shaft 5, so that the box body 1 and the box cover 4 are rotatably connected. The clamping block 9 is set so that when the rotating rod 8 is inserted into the slot 17, it can be rotated to a certain angle to fix the upper connecting rod 6 and the lower connecting rod 7. The spring 15 is set, and the spring 15 can apply elastic force to the positioning gear 12, so that the positioning gear 12 drives the core rod 11 to move toward the side close to the upper connecting rod 6, so that the positioning gear 12 and the positioning tooth groove 13 are meshed with each other, so that the circumferential direction of the core rod 11 is fixed. , so that the rotating rod 8 is fixed in the circumferential direction, and through the mutual cooperation of the limit block 10 and the limit groove 18, the upper connecting rod 6 and the lower connecting rod 7 are relatively fixed in the circumferential direction, so that the upper connecting rod 6 and the lower connecting rod 7 are fixedly connected, and the adjusting button 16 is pulled outward to compress the spring 15, and the positioning gear 12 is separated from the positioning tooth groove 13, so that the core rod 11 drives the rotating rod 8 to move outward, and the clamping block 9 is separated from the clamping groove 17, so as to realize the separation of the upper connecting rod 6 and the lower connecting rod 7, making it easy to fix and separate the upper connecting rod 6 and the lower connecting rod 7.

[0045] Embodiment 2:

[0046] See also Figure 1-7, a rotating connection structure is formed between the hinge part 1 2 and the hinge part 2 3 through a hollow shaft 5, the hollow shaft 5 is a cylindrical structure, the hollow shaft 5 is adapted to the hinge part 1 2 and the hinge part 2 3, two clamping blocks 9 are symmetrically arranged, and the clamping block 9 is arranged at the end of the rotating rod 8 close to the lower connecting rod 7, the rotating rod 8 and the clamping block 9 are adapted between the clamping groove 17, and two limit blocks 10 are symmetrically arranged, the limit block 10 is fixedly arranged at the end of the upper connecting rod 6 close to the lower connecting rod 7, and is adapted to the limit groove 18, the rotating rod 8 and the core rod 11 are relatively fixed in the circumferential direction, the core rod 11 and the rotating rod 8 are telescopically slidably adjusted, the upper end of the core rod 11 passes through the top of the bracket 14, and is movably connected with the bracket 14, the end of the spring 15 away from the bracket 14 is in contact with the positioning gear 12, the spring 15 is sleeved on the outside of the core rod 11, and the positioning gear 12 and the positioning tooth groove 13 are meshed with each other.

[0047] In the present embodiment, when it is necessary to separate hinge part 1 2 and hinge part 2 3, the adjusting button 16 is pulled outward so that the adjusting button 16 drives the core rod 11 to move outward, so that the spring 15 is compressed and the positioning gear 12 is separated from the positioning tooth groove 13, and then the adjusting button 16 is rotated so that the adjusting button 16 drives the core rod 11 and the rotating rod 8 to rotate, so that the clamping block 9 is separated from the clamping groove 17, and the upper connecting rod 6 and the lower connecting rod 7 are separated, and the upper connecting rod 6 and the lower connecting rod 7 are pulled out of the hollow shaft 5, and then the hollow shaft 5 is pulled out of hinge part 1 2 and hinge part 2 3, so that the separation of hinge part 1 2 and hinge part 2 3 is realized, so that the lubrication and oiling of hinge part 1 2 and hinge part 2 3 becomes simple, and the replacement of parts becomes simple.

[0048] Embodiment 3:

[0049] See also Figure 1-7A pull rod 19 is rotatably connected to one side of the box cover 4, a sliding rod 20 is fixed to one side of the box body 1, a slider 21 is slidably arranged on the outside of the sliding rod 20, an end of the pull rod 19 away from the box cover 4 is rotatably mounted on a side surface of the slider 21, a roller 22 is rotatably mounted on one side of the slider 21, a sliding rod 23 is fixed to one side of the box body 1, an inclined block 24 is slidably arranged on the outside of the sliding rod 23, a spring 25 is fixed to one side of the inclined block 24, an end of the spring 25 away from the inclined block 24 is fixed to a side surface of the box body 1, in a natural state, the spring 25 can drive the inclined block 24 to move to the side away from the spring 25, so that the inclined block 24 drives the slider 21 to slide to the side away from the box cover 4, in Under the action of the pull rod 19, the box cover 4 is driven to rotate until the box cover 4 rotates to overlap with the box body 1, and the roller 22 contacts one side of the inclined block 24. A rack 26 is fixed on one side of the inclined block 24. A transmission gear 27 is rotated on one side of the box body 1. The rack 26 and the transmission gear 27 are meshed with each other. A transmission rod 28 is fixed on one side of the transmission gear 27. A limit rod 29 is rotated on one side of the transmission rod 28. A vertical rod 30 is fixed on the inner side of the box body 1. A placement groove 31 is slidably provided on the outer side of the vertical rod 30. A fixing rod 32 is fixed on one side of the placement groove 31. A fixing plate 33 is fixed to one end of the fixing rod 32. A sliding groove 34 is provided on one side of the fixing plate 33. The limit rod 29 is slidably connected with the sliding groove 34.

[0050] In this embodiment, by setting the pull rod 19, when the box cover 4 is opened, the box cover 4 can drive the slider 21 to slide toward the box cover 4 under the action of the pull rod 19, so that the slider 21 drives the inclined block 24 to slide toward the box cover 4 on the surface of the sliding rod 23 under the action of the roller 22, so that the inclined block 24 drives the rack 26 to slide and adjust, and the sliding adjustment of the rack 26 can drive the rotation of the transmission gear 27 meshing with it, so that the transmission gear 27 drives the transmission rod 28 to rotate, and the limit rod 29 and the slide groove are locked. Under the action of the sliding connection 34, the rotation of the transmission rod 28 can drive the fixed plate 33 to slide upward for adjustment, so that the placement slot 31 rises upward, which is convenient for people to take glasses. Through the provision of spring 25, the spring 25 can drive the inclined block 24 to move away from the spring 25, so that the inclined block 24 drives the slider 21 to slide on the surface of the sliding rod 1 20, so that under the action of the pull rod 19, the slider 21 drives the box cover 4 to rotate until the box cover 4 is closed. Similarly, when the box cover 4 is closed, the placement slot 31 will also move downward.

[0051] The working principle and use process of the present invention are as follows: when the hinge needs to be lubricated or replaced, the adjusting button 16 is pulled outward to make the adjusting button 16 drive the core rod 11 to move outward, so that the spring 15 is compressed, and the positioning gear 12 is separated from the positioning tooth groove 13, and the restriction on the movement of the rotating rod 8 and the core rod 11 in the circumferential direction is released. Then, the adjusting button 16 is rotated to make the adjusting button 16 drive the core rod 11 and the rotating rod 8 to rotate, so that the clamping block 9 is separated from the clamping groove 17, so as to realize the separation of the upper connecting rod 6 and the lower connecting rod 7, and the upper connecting rod 6 and the lower connecting rod 7 are removed from the hollow shaft 5. Pull out, and then pull out the hollow shaft 5 from the hinge part 1 2 and the hinge part 2 3 to realize the separation of the hinge part 1 2 and the hinge part 2 3, so that the lubrication and oiling of the hinge part 1 2 and the hinge part 2 3 become simple, and the replacement of parts becomes simple. When it is necessary to install the hinge, the hollow shaft 5 is inserted between the hinge part 1 2 and the hinge part 2 3, and the upper connecting rod 6 and the lower connecting rod 7 are respectively inserted from both ends of the hollow shaft 5, so that the limit block 10 is inserted into the limit groove 18, and the rotating rod 8 and the clamping block 9 are inserted into the clamping groove 17, and then the adjusting knob 16 is turned to adjust the rotating rod 8 and the clamping block 9 to a suitable The adjusting knob 16 is then released to move the core rod 11 to the side of the upper connecting rod 6 under the action of the spring 15, until the positioning gear 12 and the positioning tooth groove 13 are meshed with each other, so that the positioning gear 12 and the core rod 11 are fixed in the circumferential direction, so that the upper connecting rod 6 and the lower connecting rod 7 are fixedly connected, and the hinge 1 2 and the hinge 2 3 are installed. When the box cover 4 is opened, the box cover 4 can drive the slider 21 to slide to the side of the box cover 4 under the action of the pull rod 19, so that the slider 21 drives the roller 22 to move. The inclined block 24 slides toward the side of the box cover 4 on the surface of the sliding rod 23, so that the inclined block 24 drives the rack 26 to slide and adjust. The sliding adjustment of the rack 26 can drive the rotation of the transmission gear 27 meshing with it, so that the transmission gear 27 drives the transmission rod 28 to rotate. Under the action of the sliding connection between the limit rod 29 and the slide groove 34, the rotation of the transmission rod 28 can drive the fixed plate 33 to slide and adjust upward, so that the placement groove 31 rises upward, which is convenient for people to take glasses. Similarly, when the glasses are placed in the placement groove 31 and the box cover 4 is closed, the placement groove 31 will also move downward until the box cover 4 is completely closed.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A spectacles case hinge structure, comprising a case body (1), characterized in that: A hinged part (2) is fixed on one side of the box body (1), a hinged part (2) is rotatably connected to a hinged part (3) on one side of the hinged part (2), a box cover (4) is fixed on one side of the hinged part (3), a hollow shaft (5) is movably connected to the inner sides of the hinged part (2) and the hinged part (3), an upper connecting rod (6) is slidably provided on the inner side of the hollow shaft (5), a lower connecting rod (7) is slidably provided on the inner side of the hollow shaft (5), a rotating rod (8) is rotatably provided on the inner side of the upper connecting rod (6), a clamping block (9) is fixed to the outer side of the rotating rod (8), and the upper connecting rod (6) is rotatably provided on the inner side of the rotating rod (8). A limiting block (10) is fixed at one end of the rotating rod (8), a core rod (11) is slidably connected to one end of the rotating rod (8), a positioning gear (12) is fixed to the outer side of the core rod (11), a positioning tooth groove (13) is provided on one side of the upper connecting rod (6), a bracket (14) is fixed on one side of the upper connecting rod (6), a spring (15) is provided on one side of the bracket (14), an adjusting button (16) is fixed on the upper end of the core rod (11), a slot (17) is provided at one end of the lower connecting rod (7), and a limiting slot (18) is provided on one side of the lower connecting rod (7).

2. The hinge structure of a glasses case according to claim 1, characterized in that: A rotating connection structure is formed between the hinge part 1 (2) and the hinge part 2 (3) via a hollow shaft (5), wherein the hollow shaft (5) is a cylindrical structure and is compatible with the hinge part 1 (2) and the hinge part 2 (3).

3. The hinge structure of a glasses case according to claim 1, characterized in that: Two of the clamping blocks (9) are symmetrically arranged, and the clamping block (9) is arranged at one end of the rotating rod (8) close to the lower connecting rod (7), and the rotating rod (8) and the clamping block (9) are adapted to the clamping groove (17).

4. The hinge structure of a glasses case according to claim 1, characterized in that: Two limit blocks (10) are symmetrically arranged. The limit blocks (10) are fixedly arranged at one end of the upper connecting rod (6) close to the lower connecting rod (7) and are adapted to the limit groove (18).

5. The hinge structure of a glasses case according to claim 1, characterized in that: The rotating rod (8) and the core rod (11) are relatively fixed in the circumferential direction, and the core rod (11) and the rotating rod (8) are telescopically slidable and adjustable. The upper end of the core rod (11) passes through the upper part of the bracket (14) and is movably connected to the bracket (14).

6. The hinge structure of a glasses case according to claim 1, characterized in that: One end of the spring one (15) away from the bracket (14) contacts the positioning gear (12); the spring one (15) is sleeved on the outside of the core rod (11); and the positioning gear (12) and the positioning tooth groove (13) are meshed with each other.

7. The hinge structure of a glasses case according to claim 1, characterized in that: One side of the box cover (4) is rotatably connected to a pull rod (19), one side of the box body (1) is fixed with a sliding rod (20), the outer side of the sliding rod (20) is slidably provided with a slider (21), one end of the pull rod (19) away from the box cover (4) is rotatably mounted on a side surface of the slider (21), and one side of the slider (21) is rotatably mounted with a roller (22).

8. The hinge structure of a glasses case according to claim 7, characterized in that: A second sliding rod (23) is fixed on one side of the box body (1), an inclined block (24) is slidably mounted on the outer side of the second sliding rod (23), a second spring (25) is fixed on one side of the inclined block (24), an end of the second spring (25) away from the inclined block (24) is fixed to a surface of one side of the box body (1), and the roller (22) is in contact with one side of the inclined block (24).

9. The hinge structure of a glasses case according to claim 1, characterized in that: A rack (26) is fixed on one side of the inclined block (24), a transmission gear (27) is rotatably mounted on one side of the box body (1), and the rack (26) and the transmission gear (27) are meshed with each other.

10. The hinge structure of a glasses case according to claim 1, characterized in that: A transmission rod (28) is fixed on one side of the transmission gear (27), a limit rod (29) is rotatably provided on one side of the transmission rod (28), a vertical rod (30) is fixed on the inner side of the box body (1), a placement groove (31) is slidably provided on the outer side of the vertical rod (30), a fixing rod (32) is fixed on one side of the placement groove (31), a fixing plate (33) is fixed on one end of the fixing rod (32), a sliding groove (34) is provided on one side of the fixing plate (33), and the limit rod (29) is slidably connected to the sliding groove (34).

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