Glasses hinge

Abstract

The utility model provides a glasses hinge, and belongs to the technical field of glasses manufacturing. The problem that an existing glasses hinge is not light and thin enough is solved. The glasses hinge comprises a first hinge body and a second hinge body, one end of the first hinge body is provided with a first hinge end, one end of the second hinge body is provided with a second hinge end, the first hinge end is hinged to the second hinge end, the first hinge end is provided with a first abutting portion, and the second hinge end is provided with an elastic structure. The elastic structure provides acting force enabling the first hinge body and the second hinge body to be kept in an open state, and / or the first hinge end is provided with a second abutting portion, and when the elastic structure abuts against the second abutting portion, the elastic structure provides acting force enabling the first hinge body and the second hinge body to be kept in a folded state. The spectacle frame has the advantages of good adaptability, capability of meeting the light and thin design requirements of spectacle legs and spectacle frames, and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of glasses manufacturing, and relates to a glasses accessory, in particular to a glasses hinge. Background Art

[0002] The hinge of glasses is used to connect the frame and the temples. In order to improve the adaptability and wearing comfort, glasses currently usually use elastic hinges to connect the frame and the temples.

[0003] For example, Chinese patent literature discloses an elastic hinge structure for glasses [application number: 202220564391.X; authorization announcement number: CN217007884U], which includes a frame component and a temple component, the frame component includes a connecting seat that is rotatably connected to the front end of the temple component, the connecting seat and the front end of the temple component are connected by a slingshot component, the slingshot component includes a flat first connecting end and a rod-shaped second connecting end, the second connecting end is respectively provided with a movable sleeve and a spring that cooperates with the movable sleeve to abut, the connecting seat includes flat connecting plates distributed up and down, a slot that cooperates with the first connecting end of the slingshot component to be plugged and rotated is formed between the two connecting plates, a connecting shaft that constitutes a rotational connection between the two is passed between at least one of the connecting plates and the first connecting end, a socket for inserting the second connecting end is provided at the front end of the temple component, the connecting seat includes an abutment surface located on the outer side of the two connecting plates, and a limit block that cooperates with the abutment surface to abut and limit is provided on the outer side of the front end of the temple component.

[0004] The above-mentioned elastic hinge structure of the glasses can realize the resilience of the temple parts when they are over-opened, and can use the elastic force of the slingshot part to automatically return the temple parts to the folded or opened state, which is easy to use. However, the slingshot part is arranged at the front end of the temple part, which makes the thickness of the temple part thicker and the connection between the frame parts larger, which does not meet the current design requirements for thinner temples and frames. Summary of the invention

[0005] The utility model aims to solve the above problems existing in the prior art and to provide a glasses hinge which has good adaptability and can meet the requirements of light and thin design of temples and frames.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a glasses hinge, comprising a hinge body 1 and a hinge body 2, wherein one end of the hinge body 1 has a hinge end 1, and one end of the hinge body 2 has a hinge end 2, and the hinge end 1 and the hinge end 2 are hinged, and characterized in that the hinge end 1 is provided with a resistance part 1, and the hinge end 2 is provided with an elastic structure, and when the elastic structure is in resistance with the resistance part 1, the elastic structure provides a force to keep the hinge body 1 and the hinge body 2 in an open state, and / or the hinge end 1 is provided with a resistance part 2, and when the elastic structure is in resistance with the resistance part 2, the elastic structure provides a force to keep the hinge body 1 and the hinge body 2 in a folded state.

[0007] In the above-mentioned glasses hinge, the hinge end 1 is provided with a plurality of abutment parts 3, and when the elastic structure abuts against the corresponding abutment parts 3, the elastic structure provides elastic force to keep the hinge body 1 and the hinge body 2 in the open and closed state at the angle corresponding to the corresponding abutment parts 3. In this way, the glasses hinge is easy to use and can limit the position of the temple relative to the frame at each set angle.

[0008] In the above-mentioned eyeglass hinge, the outer wall of the hinge end 1 has a shoulder, and the hinge body 2 has a supporting portion for the shoulder to abut. When the hinge body 1 and the hinge body 2 are both in the open state, there is a clearance gap between the shoulder and the supporting portion.

[0009] In the above-mentioned eyeglass hinge, the hinge end 2 includes an upper end and a lower end that are spaced apart, and the hinge end 1 is located between the upper end and the lower end.

[0010] In the above-mentioned eyeglass hinge, the elastic structure includes an elastic member and a protruding member vertically inserted into the hinge end 2, and the elastic member abuts against the protruding member and provides elastic force to keep the protruding member in an outward abutting tendency. When the protruding member abuts against the abutting portion 1, the elastic force of the elastic member provides an acting force to make the hinge body 1 and the hinge body 2 automatically expand to an open state and maintain the open state; when the protruding member abuts against the abutting portion 2, the elastic force of the elastic member provides an acting force to make the hinge body 1 and the hinge body 2 automatically return to a folded state and maintain the folded state; when the hinge end 1 and the hinge end 2 rotate between the abutting portion 1 and the abutting portion 2, the protruding member abuts against the hinge end 1 or the abutting portion 3, and when the protruding member abuts against the abutting portion 3, the elastic force of the elastic member provides an acting force to make the hinge body 1 and the hinge body 2 maintain the opening and closing state of the angle corresponding to the corresponding abutting portion 3.

[0011] In the above-mentioned spectacles hinge, the elastic member is a spring or a rubber column or a spring sheet, and the protruding member is a steel ball or a top rod with a spherical bottom end.

[0012] In the above-mentioned eyeglass hinge, the abutment part 1, abutment part 2 and abutment part 3 are arc-shaped grooves on one end surface of the hinge end, and the depth of the grooves gradually decreases from the middle to both sides.

[0013] When the elastic structure contacts the middle of the groove of the contact part one, hinge body one and hinge body two are in an open state. When the elastic structure just contacts the groove of the contact part one, the groove of the contact part one plays a guiding role, and cooperates with the force of the elastic structure to make hinge body one and hinge body two automatically expand to an open state. When the elastic structure passes over the middle of the groove of the contact part one, the groove of the contact part one plays a guiding role, and cooperates with the force of the elastic structure to make hinge body one and hinge body two maintain an open state, that is, a clamping force is provided on the wearer's head, which is comfortable to wear and will not shake.

[0014] When the elastic structure contacts the middle of the groove of the contact part two, the hinge body one and the hinge body two are in a folded state. When the elastic structure just contacts the groove of the contact part two, the groove of the contact part two plays a guiding role, and cooperates with the force of the elastic structure to make the hinge body one and the hinge body two automatically return to the folded state. When encountering external pressure or excessive pulling of the hinge body one and the hinge body two, the groove of the contact part two plays a guiding role, and cooperates with the force of the elastic structure to make the hinge body one and the hinge body two automatically return to the folded state.

[0015] When the elastic structure abuts against the middle of the groove of the abutment part three, the hinge body one and the hinge body two are in an open and closed state at the angle corresponding to the corresponding abutment part three. When the elastic structure just abuts against the abutment part three or passes over the middle of the groove of the abutment part three, the elastic structure provides a force to return the hinge body one and the hinge body two to the open and closed state at the angle corresponding to the corresponding abutment part three.

[0016] As another case, in the above-mentioned eyeglass hinge, the interference part one, the interference part two and the interference part three are all positioning holes provided on the end surface of the hinge end one, and when the elastic structure interferes with the positioning hole of the interference part one, the hinge body one and the hinge body two are kept in an open state, and when the elastic structure interferes with the positioning hole of the interference part two, the hinge body one and the hinge body two are kept in a folded state, and when the elastic structure interferes with other positioning holes, the hinge body one and the hinge body two are kept in an open and closed state at the angle corresponding to the positioning hole.

[0017] In another case, in the above-mentioned eyeglass hinge, one end surface of the hinge end has a circle of wavy sliding grooves, the first contact part is when the hinge body 1 and the hinge body 2 are in the open state, the elastic structure contacts the corresponding recess of the sliding groove, the second contact part is when the hinge body 1 and the hinge body 2 are in the folded state, the elastic structure contacts the corresponding recess of the sliding groove, the third contact part is other recesses of the sliding groove, and when the elastic structure contacts other recesses of the sliding groove, the hinge body 1 and the hinge body 2 can maintain the opening and closing state of the corresponding angle of the recess of the sliding groove. During use, when the elastic structure contacts the corresponding recess of the sliding groove, the hinge body 1 and the connecting body 2 can maintain the opening state, opening and closing state or folding state corresponding to the recess, which is convenient to use.

[0018] In the above-mentioned spectacles hinge, the hinge end 1 and the hinge end 2 are hingedly connected by screws, which makes assembly and disassembly convenient.

[0019] Compared with the prior art, the hinge of the glasses sets the resistance part 1 at one hinge end and the elastic structure at the second hinge end. The hinge body 1 and the hinge body 2 can be made thin and light according to the needs, meeting the existing thin and light design requirements for the temples and frames. It is also comfortable to wear and can prevent the glasses from shaking. It can meet the needs of people with different head sizes and has good adaptability. The opening and closing angles of the hinge body 1 and the hinge body 2 can be maintained, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of the hinge of the glasses in the first embodiment.

[0021] Figure 2 It is a structural exploded view of the hinge of the glasses in the first embodiment.

[0022] Figure 3 It is a structural cross-sectional view of the hinge of the glasses in the first embodiment.

[0023] Figure 4 It is a structural cross-sectional view of the hinge of the glasses in the second embodiment.

[0024] Figure 5 It is a structural exploded view of the hinge of the glasses in the third embodiment.

[0025] Figure 6 It is a structural cross-sectional view of the hinge of the glasses in the third embodiment.

[0026] Figure 7 It is a structural exploded view of the hinge of the glasses in the fourth embodiment.

[0027] Figure 8 It is a structural cross-sectional view of the hinge of the glasses in the fourth embodiment.

[0028] In the figure, 1, hinge body 1; 2, hinge body 2; 3, hinge end 1; 4, hinge end 2; 41, upper end; 42, lower end; 5, resistance part 1; 6, resistance part 2; 7, shoulder stop; 8, supporting part; 9, elastic part; 10, protruding part; 11, screw. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments. Embodiment 1

[0030] The eyeglass hinge comprises a hinge body 1 and a hinge body 2, wherein one end of the hinge body 1 has a hinge end 3, and one end of the hinge body 2 has a hinge end 4, the hinge end 3 and the hinge end 4 are hinged to each other, the hinge end 3 is provided with a resistance part 5, and the hinge end 24 is provided with an elastic structure, and when the elastic structure resists the resistance part 5, the elastic structure provides a force to keep the hinge body 1 and the hinge body 2 in an open state, and / or the hinge end 3 is provided with a resistance part 6, and when the elastic structure resists the resistance part 6, the elastic structure provides a force to keep the hinge body 1 and the hinge body 2 in a folded state.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the hinge end 1 3 is provided with a contact part 1 5, and the hinge end 1 3 is provided with a contact part 2 6. The hinge of the glasses sets the contact part 1 5 and the contact part 2 6 at the hinge end 1 3, and sets the elastic structure at the hinge end 2 4, so the hinge body 1 and the hinge body 2 2 can be designed into a thin sheet according to the needs, meeting the existing requirements for the thin and light design of the temples and frames. The open state refers to the state when hinge body 1 and hinge body 2 are expanded so that the temples and the frame are opened for wearing. In this embodiment, when the angle between hinge body 1 and hinge body 2 is 178°, the two are in the open state. Of course, the angle between hinge body 1 and hinge body 2 when in the open state can be set according to actual conditions; the folded state refers to the state when hinge body 1 and hinge body 2 are folded so that the temples and the frame are folded. In this embodiment, the angle between hinge body 1 and hinge body 2 when in the folded state is 90°. Of course, the angle between hinge body 1 and hinge body 2 when in the folded state can be set according to actual conditions.

[0032] When in use, hinge body 1 and hinge body 2 rotate relative to each other, and when the angle between them approaches 178°, the elastic structure contacts with contact part 15, and the elastic structure provides a force to make the angle between hinge body 1 and hinge body 2 automatically expand to an open state of 178°, and keep the angle between hinge body 1 and hinge body 2 in the open state of 178°; when worn, the angle between the inner side surfaces of hinge body 1 and hinge body 2 exceeds 178°, and the elastic structure still contacts with contact part 15, providing a force to keep the angle between hinge body 1 and hinge body 2 in the open state of 178°, that is, providing a clamping force applied to the wearer's head, so that it is comfortable to wear, can prevent the glasses from shaking, can meet the needs of people with different head sizes, and has good adaptability.

[0033] In this embodiment, after the angle between hinge body 1 and hinge body 2 reaches 160°, the elastic structure begins to contact with the contact part 15, thereby providing a force to automatically expand the angle between hinge body 1 and hinge body 2 to an open state of 178°; when worn, when the angle between the inner side surfaces of hinge body 1 and hinge body 2 is between 178° and 210°, the elastic structure always contacts with the contact part 15, providing a clamping force. Of course, in actual manufacturing, by adjusting the position and size of the contact part 15, the angle range of the elastic structure contacting the contact part 15 can be adjusted, which has good adaptability and comfort.

[0034] When the hinge body 1 and the hinge body 2 need to be folded, the hinge body 1 and the hinge body 2 rotate relatively, and when the angle between the two is close to 90°, the elastic structure contacts the contact part 2 6, and the elastic structure provides a force to automatically return the angle between the hinge body 1 and the hinge body 2 to the folded state of 90°. When encountering external pressure or excessive pulling so that the angle between the hinge body 1 and the hinge body 2 is less than 90°, the elastic structure still contacts the contact part 2 6, providing a force to return the hinge body 1 and the hinge body 2 to the folded state of 90°; in this embodiment, when the angle between the hinge body 1 and the hinge body 2 is 70°-110°, the elastic structure contacts the contact part 2 6. Of course, in actual manufacturing, by adjusting the position and size of the contact part 2 6, the angle range of the elastic structure contacting the contact part 2 6 can be adjusted.

[0035] The outer wall of the hinge end 1 3 has a shoulder 7, and the hinge body 2 2 has a butt portion 8 for the shoulder 7 to butt against. When the hinge body 1 and the hinge body 2 2 are both in an open state, there is a clearance distance between the shoulder 7 and the butt portion 8. When the shoulder 7 butts against the butt portion 8, the hinge body 1 and the hinge body 2 2 are limited, and both cannot continue to rotate outward, which is convenient to use; the setting of the clearance distance allows the hinge body 1 and the hinge body 2 2 to expand outward by more than 178° to improve adaptability; in this embodiment, when the angle between the inner side surfaces of the hinge body 1 and the hinge body 2 2 is 210 degrees, the shoulder 7 butts against the butt portion 8. Of course, in actual manufacturing, adjusting the position of the shoulder 7 can increase or decrease the clearance distance, and can adjust the final opening angle of the hinge body 1 and the hinge body 2 2.

[0036] The hinged end 2 4 includes an upper end 41 and a lower end 42 which are spaced apart, and the hinged end 1 3 is located between the upper end 41 and the lower end 42, so that the hinged end 1 3 is axially limited by the upper end 41 and the lower end 42, and the hinged end 1 3 rotates smoothly with little shaking, and has good working stability. The hinged end 1 3 and the hinged end 2 4 are hinged by a screw 11, and the screw 11 axially passes through the upper end 41 and the hinged end 1 3 from top to bottom, and the bottom end of the screw 11 is threadedly connected with a nut embedded in the bottom of the lower end 42, and the hinged end 1 3 rotates around the bare rod of the screw 11.

[0037] The elastic structure includes an elastic member 9 and a protruding member 10 vertically inserted into the hinge end 2 4. The elastic member 9 abuts against the protruding member 10 and provides elastic force to keep the protruding member 10 abutting against the hinge end 1 3 or the abutting portion 1 5 or the abutting portion 2 6. The elastic member 9 is a spring or a rubber column or a spring sheet, and the protruding member 10 is a steel ball or a top rod with a spherical bottom end. In this embodiment, the elastic member 9 is a spring, the protruding member 10 is a steel ball, the head of the screw 11 abuts against the top of the spring, and the bottom of the spring abuts against the steel ball. When the steel ball contacts the contact part 1 5 , the elastic force of the spring provides a force to automatically expand the angle between the hinge body 1 and the hinge body 2 2 and maintain it to an open state of 180°; when the steel ball contacts the contact part 2 6 , the elastic force of the spring provides a force to automatically return the angle between the hinge body 1 and the hinge body 2 2 and maintain it to a folded state of 90°; when the hinge end 1 3 and the hinge end 2 4 rotate between the contact part 1 5 and the contact part 2 6 , the steel ball contacts the hinge end 1 3 .

[0038] In this embodiment, the first contact part 5 and the second contact part 6 are arc-shaped grooves on the end surface of the hinge end 3, and the depth of the grooves gradually decreases from the middle to the sides. There are two groups of springs and steel balls and they are symmetrically arranged at the upper end 41. The number of grooves is four, so the structure is stable, will not shake, and has good working stability. When the hinge body 1 and the hinge body 2 are in an open state with an included angle of 178°, the two steel balls, under the action of their respective springs, abut against the middle parts of the two grooves of the corresponding abutting part 15; when the hinge body 1 and the hinge body 2 are rotated to open, and the two steel balls just abut against the two grooves of the corresponding abutting part 15, the two grooves of the corresponding abutting part 15 play a guiding role, and cooperate with the elastic force of the two springs to make the included angle between the hinge body 1 and the hinge body 2 automatically expand to the open state of 178°; when the included angle between the hinge body 1 and the hinge body 2 exceeds 178° and expands outward, the two grooves of the corresponding abutting part 15 play a guiding role, and cooperate with the elastic force of the two springs to make the included angle between the hinge body 1 and the hinge body 2 maintain the open state of 178°, that is, a clamping force is provided to the wearer's head, and the wearer is comfortable and will not shake.

[0039] When the hinge body 1 and the hinge body 2 are in a folded state with an angle of 90°, the two steel balls, under the action of their respective springs, abut against the middle parts of the two grooves of the corresponding abutting part 2 6; when the hinge body 1 and the hinge body 2 are rotated and folded, and the two steel balls just abut against the two grooves of the corresponding abutting part 2 6, the two grooves of the corresponding abutting part 2 6 play a guiding role, and cooperate with the elastic force of the two springs, so that the hinge body 1 and the hinge body 2 automatically return to the folded state with an angle of 90°; when encountering external pressure or excessive pulling so that the angle between the hinge body 1 and the hinge body 2 is less than 90°, the two grooves of the corresponding abutting part 2 6 play a guiding role, and cooperate with the action force of the two springs, so that the hinge body 1 and the hinge body 2 automatically return to the folded state with an angle of 90°. Embodiment 2

[0040] like Figure 4 As shown, the structure and principle of this embodiment are basically the same as those of the first embodiment, and the difference is that in this embodiment, the screw 11 axially passes through the upper end 41 and the hinge end 3 from top to bottom, and the bottom end of the screw 11 is threadedly connected with the internal threaded blind hole of the lower end 42, and the hinge end 3 rotates around the smooth rod part of the screw 11, and the head of the screw 11 is in conflict with the top end of the spring. Embodiment 3

[0041] like Figure 5 and Figure 6 As shown, the structure and principle of this embodiment are basically the same as those of the first embodiment, and the difference is that in this embodiment, the screw 11 passes through the lower end 42 from bottom to top, the screw 11 is threadedly connected to the lower end 42, and the bottom end of the screw 11 is a bare rod and is inserted into the blind hole of the hinge end 1 3, so that the hinge end 1 3 and the hinge end 2 4 are hinged.

[0042] The upper end 41 is threadedly connected with a locking cap, and the top end of the spring abuts against the locking cap. The locking cap has a limiting column extending into the spring, so that the spring works stably and will not shake. Embodiment 4

[0043] like Figure 7 and Figure 8 As shown, the structure and principle of this embodiment are basically the same as those of the first embodiment, except that the hinge end 1 3 is provided with a plurality of abutment parts 3. When the elastic structure abuts against the corresponding abutment parts 3, the elastic structure provides elastic force to keep the hinge body 1 1 and the hinge body 2 2 in the open and closed state at the angle corresponding to the corresponding abutment parts 3.

[0044] In this embodiment, the contact part 1 5, the contact part 2 6 and the contact part 3 are all positioning holes on the end surface of the hinge end 1 3. When the elastic structure contacts the positioning hole of the contact part 1 5, the angle between the hinge body 1 and the hinge body 2 2 is maintained at 178° in an open state. When the elastic structure contacts the positioning hole of the contact part 2 6, the hinge body 1 and the hinge body 2 2 are folded at an angle of 90°. When the elastic structure contacts the positioning hole of the contact part 3, the hinge body 1 and the hinge body 2 2 are maintained in an open state at an angle corresponding to the positioning hole of the contact part 3. In this way, when the elastic structure contacts the corresponding contact part 3, the hinge body 1 and the connector 2 can automatically return to their positions and maintain the open and closed state corresponding to the contact part 3, which is convenient to use. In this embodiment, the positioning holes are blind holes. In actual manufacturing, the positioning holes can be through holes.

[0045] The elastic structure includes springs and steel balls vertically inserted into the hinged end 4. There are two groups of springs and steel balls, which are symmetrically arranged at the upper end 41. The screw 11 axially passes through the upper end 41 and the hinged end 3 from top to bottom, and the bottom end of the screw 11 is threadedly connected with the internal threaded blind hole of the lower end 42. The hinged end 3 rotates around the bare rod of the screw 11, and the head of the screw 11 is used to contact the top ends of the two springs.

[0046] The diameter of the steel ball is larger than the aperture of the positioning hole. When the hinge body 1 and the hinge body 2 are in a folded state with an angle of 90°, the two steel balls, under the action of their respective springs, abut against the two positioning holes of the corresponding abutment part 2, and the two springs also provide a force to keep the hinge body 1 and the hinge body 2 in a folded state with an angle of 90°; when the hinge body 1 and the hinge body 2 are rotated to open, the two steel balls abut against the positioning holes of the corresponding abutment part 3, and the hinge body 1 and the connecting body 2 can automatically return to their positions and maintain the opening and closing state corresponding to the abutment part 3; when the hinge body 1 and the hinge body 2 are in an open state with an angle of 178°, the two steel balls, under the action of their respective springs, abut against the two positioning holes of the corresponding abutment part 15, and the two springs also provide a force to keep the hinge body 1 and the hinge body 2 in an open state with an angle of 178°.

[0047] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A spectacles hinge, comprising a hinge body 1 (1) and a hinge body 2 (2), wherein one end of the hinge body 1 (1) has a hinge end 1 (3), and one end of the hinge body 2 (2) has a hinge end 2 (4), and the hinge end 1 (3) and the hinge end 2 (4) are hingedly connected, characterized in that: The hinge end one (3) is provided with a first contact portion (5), and the hinge end two (4) is provided with an elastic structure. When the elastic structure contacts the first contact portion (5), the elastic structure provides a force to keep the hinge body one (1) and the hinge body two (2) in an open state, and / or the hinge end one (3) is provided with a second contact portion (6). When the elastic structure contacts the second contact portion (6), the elastic structure provides a force to keep the hinge body one (1) and the hinge body two (2) in a folded state.

2. The hinge for glasses according to claim 1, characterized in that: The hinge end one (3) is provided with a plurality of abutment parts three. When the elastic structure abuts against the corresponding abutment parts three, the elastic structure provides elastic force to enable the hinge body one (1) and the hinge body two (2) to maintain the opening and closing state of the angle corresponding to the corresponding abutment parts three.

3. A spectacles hinge according to claim 1 or 2, characterized in that: The outer wall of the hinge end 1 (3) has a stop shoulder (7), and the hinge body 2 (2) has a support portion (8) for the stop shoulder (7) to abut against. When the hinge body 1 (1) and the hinge body 2 (2) are both in an open state, there is a clearance gap between the stop shoulder (7) and the support portion (8).

4. The hinge for glasses according to claim 1 or 2, characterized in that: The hinged end 2 (4) comprises an upper end (41) and a lower end (42) which are spaced apart from each other, and the hinged end 1 (3) is located between the upper end (41) and the lower end (42).

5. The hinge for glasses according to claim 1 or 2, characterized in that: The elastic structure comprises an elastic member (9) and a protruding member (10) vertically inserted into the second hinge end (4); the elastic member (9) contacts the protruding member (10) and provides elastic force to keep the protruding member (10) in a tendency to contact outwards.

6. The hinge for glasses according to claim 5, characterized in that: The elastic member (9) is a spring or a rubber column or a spring sheet, and the protruding member (10) is a steel ball or a top rod with a spherical bottom end.

7. The hinge for glasses according to claim 1, characterized in that: The abutment part 1 (5) and abutment part 2 (6) are both arc-shaped grooves on the end surface of the hinge end 1 (3), and the depth of the grooves gradually decreases from the middle to the two sides.

8. The hinge for glasses according to claim 2, characterized in that: The abutment part one (5), the abutment part two (6) and the abutment part three are all positioning holes provided on the end surface of the hinge end one (3); when the elastic structure abuts against the positioning hole of the abutment part one (5), the hinge body one (1) and the hinge body two (2) are kept in an open state; when the elastic structure abuts against the positioning hole of the abutment part two (6), the hinge body one (1) and the hinge body two (2) are kept in a folded state; when the elastic structure abuts against the positioning hole of the abutment part three, the hinge body one (1) and the hinge body two (2) are kept in an open and closed state at an angle corresponding to the positioning hole of the abutment part three.

9. The hinge for glasses according to claim 2, characterized in that: The hinge end 1 (3) has a circle of wavy sliding grooves on its end surface; the abutment part 1 (5) is a concave portion corresponding to the sliding groove when the hinge body 1 (1) and the hinge body 2 (2) are in an open state; the abutment part 2 (6) is a concave portion corresponding to the sliding groove when the hinge body 1 (1) and the hinge body 2 (2) are in a folded state; the abutment part 3 is another concave portion of the sliding groove; when the elastic structure abuts another corresponding concave portion of the sliding groove, the hinge body 1 (1) and the hinge body 2 (2) maintain an open and closed state at an angle corresponding to the concave portion.

10. The hinge for glasses according to claim 1 or 2, characterized in that: The hinged end 1 (3) and the hinged end 2 (4) are hingedly connected via screws (11).

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