Elastic hinge for glasses and glasses

Abstract

The elastic hinge comprises an elastic connecting part, a first connecting part and a second connecting part, a first hinge part is arranged at one end of the elastic connecting part, a second hinge part is arranged at one end of the first connecting part, and a third hinge part is arranged at one end of the second connecting part. The first hinge part, the second hinge part and the third hinge part are hinged to form a hinge structure; the elastic connecting part comprises an arc-shaped elastic piece, the arc-shaped elastic piece is arranged around the hinge structure, an elastic clamping block is arranged at the other end of the elastic connecting part, a first clamping groove is formed in the first connecting part, and the elastic clamping block is clamped in the first clamping groove; the elastic connecting part, the first connecting part and the second connecting part are of a split structure, and when the elastic connecting part loses efficacy, the elastic clamping block is separated from the first clamping groove, so that the elastic connecting part is conveniently and quickly separated from the first connecting part, the elastic connecting part is conveniently and quickly replaced, the elastic hinge for the glasses is prevented from being totally scrapped, and the maintenance cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to glasses technical field, concretely relates to a kind of elastic hinge and glasses for glasses. BACKGROUND

[0002] Glasses hinge is used to connect glasses leg and glasses frame;The glasses leg in the glasses frame that people usually use is strip-shaped, and the glasses leg and the glasses frame are connected by hinge structure, and when glasses are used, the glasses leg is fully opened, is supported on ear, and is clamped on the two sides of face, to fix the function of glasses ring;Long-term opening and closing operation can cause the deformation of hinge position or glasses leg, and can cause the unbalance of glasses frame, affect the vision of user.

[0003] The existing hinge structure replacement method is to replace the whole elastic hinge, and the elastic part cannot be replaced, so that the replacement cost is high;Meanwhile, the existing elastic part is inconvenient to disassemble, and is difficult to maintain. Therefore, how to overcome the above technical problems and defects becomes a key problem to be solved. UTILITY MODEL CONTENT

[0004] In view of the problem that the existing hinge structure replacement method cannot replace the elastic part, the utility model provides an elastic hinge for glasses and glasses.

[0005] The technical scheme adopted by the utility model to solve the above technical problems is as follows:

[0006] The utility model provides an elastic hinge for glasses in one aspect, which is used for connecting glasses leg and glasses frame, and includes elastic connecting part, first connecting part and second connecting part, one end of the elastic connecting part is provided with first hinge part, one end of the first connecting part is provided with second hinge part, one end of the second connecting part is provided with third hinge part, the first hinge part, the second hinge part and the third hinge part are hinged to form hinge structure;The elastic connecting part includes arc-shaped elastic sheet, the arc-shaped elastic sheet is arranged around the hinge structure, the first end of the arc-shaped elastic sheet is connected with the first hinge part, and the second end of the arc-shaped elastic sheet is free end and has gap with the hinge structure;The other end of the elastic connecting part is provided with elastic clamping block, the first connecting part is provided with first clamping groove, and the elastic clamping block is detachably clamped in the first clamping groove;When the glasses leg is unfolded to about 90 °, the second end of the arc-shaped elastic sheet abuts against the second connecting part to provide the elasticity of further expansion of the glasses leg;When the glasses leg is further expanded from about 90 °, the gap between the second end of the arc-shaped elastic sheet and the hinge structure gradually reduces, until the second end of the arc-shaped elastic sheet abuts against the hinge structure.

[0007] Optionally, the side of the first connecting part is provided with a first limiting groove, the first limiting groove is communicated with the wall of the first connecting part near one end of the second hinge part, and the other end of the first limiting groove is communicated with the first clamping groove; one end of the elastic clamping block is connected with the other end of the elastic connecting part, the free end of the elastic clamping block is arc-shaped and protrudes from the plane where the elastic connecting part is located, the elastic connecting part is embedded in the first limiting groove, and the free end of the elastic clamping block is embedded in the first clamping groove.

[0008] Optionally, the shell is a hollow structure with one end open, the first connecting part and the elastic connecting part are embedded in the shell away from one end of the hinge structure; the side of the shell is provided with a first through hole penetrating the side of the shell at a position corresponding to the elastic clamping block, the free end of the elastic clamping block protrudes from the first clamping groove and is embedded in the first through hole; the opening end of the shell is provided with a second clamping groove in the width direction corresponding to the first hinge part, one end of the second clamping groove is communicated with the outer wall of the shell, the other end of the second clamping groove is communicated with the inner wall of the shell, when the first connecting part and the elastic connecting part are embedded in the shell away from one end of the hinge structure, the second clamping groove provides a space for the rotation of the first hinge part; when the glasses leg is unfolded to about 90°, there is a gap between the second clamping groove and the first hinge part; when the glasses leg is further expanded from about 90°, the gap between the first hinge part and the second clamping groove gradually decreases until the outer wall of the second hinge part is in contact with the second clamping groove.

[0009] Optionally, the number of the first hinge parts is one, the number of the second hinge parts is two, and the number of the third hinge parts is two; the two sides of the arc-shaped elastic sheet in the width direction protrude from the two sides of the first hinge part in the width direction, the two sides of the first hinge part and the two sides of the corresponding arc-shaped elastic sheet form two grooves; a gap exists between the first end and the second end of the arc-shaped elastic sheet;

[0010] A transition connecting part is arranged between the first connecting part and the second hinge part, two second hinge parts are arranged in the two grooves respectively, and one end of the transition connecting part away from the second hinge part is connected with the first connecting part through the gap

[0011] Two third hinge parts are arranged outside the two second hinge parts respectively;

[0012] The first, second and third hinge parts are circular, and a hinge fixing structure is arranged through the first hinge part, the second hinge part on both sides of the first hinge part and the third hinge part on both sides of the second hinge part to form a hinge structure, and the first and second hinge parts move relative to the hinge fixing structure.

[0013] Optionally, the hinge fixing structure comprises a bolt and a nut seal, and the bolt and the nut seal are arranged outside the two third hinge parts respectively.

[0014] The nut seal comprises a circular seal and a threaded cylinder body, the threaded cylinder body is connected to the side of the circular seal close to the third hinge part, the threaded cylinder body extends in a direction perpendicular to the plane of the circular seal, the threaded cylinder body extends from one side of the hinge structure to the other side of the hinge structure, and the bolt is embedded in the threaded cylinder body from the other side of the hinge structure and connected with the internal thread of the threaded cylinder body.

[0015] Optionally, the side of the circular seal close to the third hinge part is provided with a limiting block, and the side of the third hinge part close to the circular seal is provided with a second limiting groove, and the limiting block is clamped in the second limiting groove.

[0016] Optionally, the hinge fixing structure further comprises a bolt seal, the bolt seal is arranged between the third hinge part and the bolt, the bolt seal comprises an annular sealing sheet and a first cylinder body, the annular sealing sheet is provided with a second through hole corresponding to the position of the third hinge part, the first cylinder body is connected to the second through hole of the annular sealing sheet and extends in a direction perpendicular to the plane of the annular sealing sheet, the first cylinder body is embedded in the third hinge part, and the outer wall of the first cylinder body is in contact with the inner wall of the third hinge part; the side of the annular sealing sheet close to the bolt is provided with a third limiting groove, and the third limiting groove is coaxially arranged with and communicated with the second through hole.

[0017] Optionally, the hinge fixing structure further comprises two gaskets, the two gaskets are arranged between the corresponding third hinge part and the second hinge part respectively, the gasket comprises an annular sheet and a second cylinder body, the annular sheet is provided with a third through hole corresponding to the position of the second hinge part, the second cylinder body is connected to the third through hole of the annular sheet and extends in a direction perpendicular to the plane of the annular sheet, the second cylinder body is embedded in the second hinge part, and the outer wall of the second cylinder body is in contact with the inner wall of the second hinge part.

[0018] Optionally, the inner side of the two third hinge parts is formed with a moving groove, the opening of the moving groove faces the second hinge part, the second end of the arc-shaped elastic sheet extends to both ends along the width direction of the arc-shaped elastic sheet, and the second end of the arc-shaped elastic sheet is slidably arranged in the moving groove; when the arc-shaped elastic sheet is in the initial state, the second end of the arc-shaped elastic sheet and one end of the moving groove are in contact with each other; as the opening angle of the glasses leg increases, the second end of the arc-shaped elastic sheet gradually approaches the other end of the moving groove until they abut against each other to limit the opening angle of the glasses leg.

[0019] The utility model provides a kind of glasses on the other aspect provided by the utility model, including the elastic hinge component for glasses described above, glasses frame and glasses leg, the one end of the elastic hinge component for glasses is used to connect with the glasses frame, and the other end of the elastic hinge for glasses is used to connect with the glasses leg.

[0020] According to the elastic hinge for glasses provided by the utility model, the elastic connecting part is used for the elastic hinge for glasses, and is used as the connecting structure between the glasses frame and the glasses leg. The elastic hinge for glasses of the present application, on the one hand, compared with other existing elastic hinge structures, adopts the design of the arc-shaped elastic sheet surrounding the hinge structure, and the internal space of the arc-shaped elastic sheet is filled with the hinge structure, which realizes the full utilization of space, reduces the volume of the elastic hinge for glasses, and avoids the problem of appearance or wearing comfort caused by the excessive volume of the elastic hinge for glasses. The elastic connecting part, the first connecting part and the second connecting part of the present application are of a split structure. In the working state, the elastic clamping block provided at the other end of the elastic connecting part is clamped in the first clamping groove. The elastic connecting part and the first connecting part are of an integrated structure, and then are connected with the second connecting part. When the elastic connecting part fails, the second connecting part is removed, and then the elastic clamping block is separated from the first clamping groove, so that the elastic connecting part can be quickly separated from the first connecting part, the elastic connecting part can be replaced, the entire elastic hinge for glasses is not scrapped due to the failure of the elastic connecting part, and maintenance costs are saved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings to be used in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creating labor intensity.

[0022] Figure 1 is the explosion schematic diagram of the elastic hinge for glasses provided by an embodiment of the utility model;

[0023] Figure 2 is the cross-sectional schematic diagram of the elastic hinge for glasses provided by an embodiment of the utility model;

[0024] Figure 3 is a structure schematic view of the elastic connecting part in the elastic hinge for glasses provided by an embodiment of the utility model;

[0025] Figure 4 is a structure schematic view of the first connecting part in the elastic hinge for glasses provided by an embodiment of the utility model;

[0026] Figure 5 is a structure schematic view of the second connecting part in the elastic hinge for glasses provided by an embodiment of the utility model;

[0027] Figure 6 is a structure schematic view of the shell in the elastic hinge for glasses provided by an embodiment of the utility model;

[0028] Figure 7 is a structure schematic view of the nut sealing piece in the elastic hinge for glasses provided by an embodiment of the utility model;

[0029] Figure 8 is a first structure schematic view of the bolt sealing piece in the elastic hinge for glasses provided by an embodiment of the utility model;

[0030] Figure 9 is a second structure schematic view of the bolt sealing piece in the elastic hinge for glasses provided by an embodiment of the utility model;

[0031] Figure 10 is a structure schematic view of the gasket in the elastic hinge for glasses provided by an embodiment of the utility model;

[0032] The reference signs in the drawings of the specification are as follows:

[0033] 1, elastic connecting part; 11, first hinge part; 12, arc-shaped elastic sheet; 121, first end; 122, second end; 123, notch; 13, elastic clamping block; 14, recess; 2, first connecting part; 21, second hinge part; 22, first clamping groove; 23, first limiting groove; 24, transition connecting part; 3, second connecting part; 31, third hinge part; 311, second limiting groove; 312, moving groove; 4, shell; 41, first through hole; 42, second clamping groove; 51, bolt; 52, nut sealing piece; 521, circular sealing piece; 522, threaded cylinder body; 523, limiting block; 53, bolt sealing piece; 531, annular sealing sheet; 532, first cylinder body; 533, second through hole; 534, third limiting groove; 54, gasket; 541, annular sheet; 542, second cylinder body; 543, third through hole. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0035] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0036] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, can be mechanical connection, or electrical connection, can be directly connected, or indirectly connected through an intermediate medium, can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] As Figures 1-4As shown, in an embodiment, the utility model discloses a kind of elastic hinges for glasses, for the connection of glasses leg and glasses frame, including elastic connecting portion 1, first connecting portion 2 and second connecting portion 3, one end of elastic connecting portion 1 is provided with first hinged part 11, one end of first connecting portion 2 is provided with second hinged part 21, one end of second connecting portion 3 is provided with third hinged part 31, and first hinged part 11, second hinged part 21 and third hinged part 31 are hinged to form hinge structure;Elastic connecting portion 1 includes arc spring 12, and arc spring 12 is arranged around hinge structure, and the first end 121 of arc spring 12 is connected with first hinged part 11, and the second end 122 of arc spring 12 is free end and has gap with hinge structure;The other end of elastic connecting portion 1 is provided with elastic clamping block 13, and first connecting portion 2 is provided with first clamping groove 22, and elastic clamping block 13 is detachably clamped in first clamping groove 22;When glasses leg is unfolded to about 90 °, the second end 122 of arc spring 12 abuts against second connecting portion 3 to provide the elasticity of glasses leg further outwards, when glasses leg is further outwards from about 90 °, the gap between the second end 122 of arc spring 12 and hinge structure gradually reduces, until the second end 122 of arc spring 12 and hinge structure abut.

[0038] According to the utility model provides a kind of elastic hinges for glasses, by using elastic connecting portion 1 for elastic hinges for glasses, for as the connecting structure between glasses frame and glasses leg, the elastic hinges for glasses of the present application, on the one hand, compared with other elastic hinge structure, the design of arc spring 12 around hinge structure is used, the internal space of arc spring 12 is filled by hinge structure, realize the full use of space, reduce the volume of elastic hinges for glasses, avoid the problem of aesthetic or wearing comfort caused by the volume of elastic hinges for glasses being too large.

[0039] The arc spring 12 of the application is a ring-like structure with an opening, when glasses leg is unfolded to about 90 °, the second end 122 of arc spring 12 abuts against second connecting portion 3 to provide the elasticity of glasses leg further outwards, when glasses leg is further outwards from about 90 ° in the process of being impacted or being used improperly (such as violent folding), the gap between the second end 122 of arc spring 12 and hinge structure gradually reduces, and the arc spring 12 is elastically deformed to provide the elasticity of limiting glasses leg further outwards, so that direct force transmission between arc spring 12 and second connecting portion 3 can be realized, and the arc spring 12 is prevented from being broken as a direct tensile stress point;The setting of the hinge structure can reduce the external force received by the arc spring 12, and improve the anti-external force breaking performance of the arc spring 12.

[0040] The elastic connecting part 1, the first connecting part 2 and the second connecting part 3 of the present application are in a split structure, in the working state, the elastic connecting part 1 is clamped in the first clamping groove 22 by the elastic clamping block 13 arranged at the other end of the elastic connecting part 1; the elastic connecting part 1 is in an integrated structure with the first connecting part 2, and then connected with the second connecting part 3; when the elastic connecting part 1 fails, the second connecting part 3 is removed, and then the elastic clamping block 13 is separated from the first clamping groove 22, so that the elastic connecting part 1 and the first connecting part 2 can be quickly separated, the elastic connecting part 1 can be replaced, the entire elastic hinge for glasses caused by the failure of the elastic connecting part 1 is avoided from being scrapped, and the maintenance cost is saved.

[0041] In an embodiment, the elastic connecting part 1 is selected from a metal sheet or a non-metal sheet, and the metal sheet is selected from one of a zirconium-based amorphous alloy sheet, a copper-based amorphous alloy sheet, an iron-based amorphous alloy sheet, a magnesium-based amorphous alloy sheet and a titanium-based amorphous alloy sheet.

[0042] In a preferred embodiment, the elastic connecting part 1 is selected from a zirconium-based amorphous alloy.

[0043] The zirconium-based amorphous alloy has high material strength, the tensile strength is 800-1500 MPa, which is 2.5 times that of 316 stainless steel and 1.5 times that of titanium alloy, the hinge structure can be designed to be lighter and thinner, the weight of the accessory is reduced, and the comfort of the wearer is improved. At the same time, the material has high strength, which ensures that the glasses do not deform during long-term use, and improves the quality of the glasses. The Vickers hardness of the zirconium-based amorphous alloy is 440-540 Hv, which is much higher than that of stainless steel and titanium alloy, and the wear during use is small. In the long-term use, there is no deformation and small elastic deformation phenomenon. The elastic deformation rate of the zirconium-based amorphous alloy material is 0.6-1.5%, which is 6 times higher than that of 316 stainless steel, the elasticity is better, and the wearing comfort is better.

[0044] As shown in FIG. 1, Figures 1-4 In an embodiment, the side surface of the first connecting part 2 is provided with a first limiting groove 23, one end of the first limiting groove 23 is communicated with the wall of the first connecting part 2 near the second hinge part 21, and the other end of the first limiting groove 23 is communicated with the first clamping groove 22; one end of the elastic clamping block 13 is connected with the other end of the elastic connecting part 1, the free end of the elastic clamping block 13 is arc-shaped and protrudes out of the plane of the elastic connecting part 1, the elastic connecting part 1 is embedded in the first limiting groove 23, and the free end of the elastic clamping block 13 is embedded in the first clamping groove 22.

[0045] Specifically, a transition connecting section is arranged between the elastic connecting part 1 and the first hinged part 11, the transition connecting section is trapezoidal, and the width of the transition connecting section gradually increases in the direction from the first hinged part 11 to the elastic connecting part 1; the end of the first limiting slot 23 close to the second hinged part 21 is trapezoidal, and the transition connecting section is clamped in the trapezoidal slot; the free end of the elastic clamping block 13 is embedded in the first clamping slot 22, so that the elastic connecting part 1 and the first connecting part 2 are prevented from being separated, and the connection stability of the elastic connecting part 1 and the first connecting part 2 is improved.

[0046] As shown in Figures 1-2 and Figure 6 in an embodiment, the housing 4 is a hollow structure with one open end, and the first connecting part 2 and the elastic connecting part 1 are embedded in the housing 4 away from the hinged structure; the side surface of the housing 4 is provided with a first through hole 41 penetrating the side surface of the housing 4 at the position corresponding to the elastic clamping block 13, and the free end of the elastic clamping block 13 protrudes from the first clamping slot 22 and is embedded in the first through hole 41.

[0047] The first connecting part 2 and the elastic connecting part 1 are embedded in the housing 4 away from the hinged structure, so that the elastic connecting part 1 and the first connecting part 2 are further prevented from being separated, and the connection stability of the elastic connecting part 1 and the first connecting part 2 is improved; the housing 4 is arranged outside the first connecting part 2 and the elastic connecting part 1 away from the hinged structure, which can play a dustproof effect and prevent dust and other impurities from falling between the elastic connecting part 1 and the first connecting part 2, thereby affecting the aesthetic performance.

[0048] Further, when the elastic connecting part 1 is replaced, the elastic clamping block 13 is pressed to make it fall off from the first through hole 41, and then the first connecting part 2 and the elastic connecting part 1 are taken out from the housing 4 together to replace the elastic connecting part 1.

[0049] As shown in Figure 6 in an embodiment, the open end of the housing 4 is provided with a second clamping slot 42 in the width direction of the first hinged part 11, one end of the second clamping slot 42 communicates with the outer wall of the housing 4, and the other end of the second clamping slot 42 communicates with the inner wall of the housing 4; when the first connecting part 2 and the elastic connecting part 1 are embedded in the housing 4, the second clamping slot 42 provides a space for the first hinged part 11 to rotate; when the glasses leg is unfolded to about 90°, there is a gap between the second clamping slot 42 and the first hinged part 11; when the glasses leg is further expanded from about 90°, the gap between the first hinged part 11 and the second clamping slot 42 gradually decreases until the outer wall of the second hinged part 21 reaches the second clamping slot 42.

[0050] Specifically, when the glasses leg is unfolded to about 90°, there is a gap between the second clamping groove 42 and the first hinge part 11; when the glasses leg is further expanded from about 90° due to impact or improper use (such as violent folding), the gap between the first hinge part 11 and the second clamping groove 42 gradually decreases, and the arc-shaped elastic sheet 12 elastically deforms to provide elastic resistance to further expansion of the glasses leg, thereby realizing direct force transmission between the elastic connecting part 1 and the second connecting part 3, avoiding the arc-shaped elastic sheet 12 as a direct stretching stress point and breaking; the setting of the hinge structure can reduce the external force on the arc-shaped elastic sheet 12 and improve the anti-external force breaking performance of the arc-shaped elastic sheet 12.

[0051] As shown in Figures 1-2 In an embodiment, the number of first hinge parts 11 is one, the number of second hinge parts 21 is two, and the number of third hinge parts 31 is two;

[0052] The two sides of the arc-shaped elastic sheet 12 in the width direction protrude to the two sides of the first hinge part 11 in the width direction, and the two sides of the first hinge part 11 and the corresponding two sides of the arc-shaped elastic sheet 12 form two grooves 14; there is a gap 123 between the first end 121 and the second end 122 of the arc-shaped elastic sheet 12;

[0053] A transition connecting part 24 is arranged between the first connecting part 2 and the second hinge part 21, two second hinge parts 21 are arranged in the two grooves 14 respectively, and the end of the transition connecting part 24 away from the second hinge part 21 is connected with the first connecting part 2 through the gap 123;

[0054] Two third hinge parts 31 are arranged on the outer sides of the two second hinge parts 21 respectively;

[0055] The first hinge part 11, the second hinge part 21 and the third hinge part 31 are all circular rings, a hinge fixing structure is arranged to pass through the first hinge part 11, the second hinge part 21 on both sides of the first hinge part 11 and the third hinge part 31 on both sides of the second hinge part 21 to form a hinge structure, and the first hinge part 11 and the second hinge part 21 move relative to the hinge fixing structure.

[0056] Specifically, the two second hinge parts 21 are arranged in the two grooves 14 respectively, and the transition connecting part 24 is connected with the first connecting part 2 through the gap 123 at the end away from the second hinge part 21, so that the elastic connecting part 1 and the first connecting part 2 form an integral whole; through the above structure, the first hinge part 11, the second hinge part 21 and the third hinge part 31 are arranged to rotate relative to each other, so that the first hinge part 11 and the second hinge part 21 are the actual friction parts in the hinge structure, and in the process of further expanding the angle of the glasses legs from about 90°, the distance between the arc-shaped elastic sheet 12 and the first hinge part 11 and the second hinge part 21 gradually decreases, until the inner wall of the arc-shaped elastic sheet 12 abuts against the outer wall of the first hinge part 11 and the second hinge part 21, so that the direct force transmission between the arc-shaped elastic sheet 12 and the second connecting part 3 can be realized, and the elastic connecting part 1 as the direct stretching stress point is avoided to be broken; the hinge structure can reduce the external force received by the arc-shaped elastic sheet 12, improve the anti-external force breaking performance of the arc-shaped elastic sheet 12, and ensure the long-term use of the elastic hinge for glasses.

[0057] Further, the first hinge part 11, the second hinge part 21 and the third hinge part 31 are connected to form a hinge structure through the hinge fixing structure, and the first hinge part 11, the second hinge part 21 and the third hinge part 31 are arranged to rotate relative to the hinge fixing structure, and since the first hinge part 11, the second hinge part 21 and the third hinge part 31 are located at the center of the circle, the elastic connecting part 1, the first connecting part 2 and the second connecting part 3 are balanced in stress, and the service life of the elastic hinge for glasses is prolonged.

[0058] As shown in Figures 1-2 and Figure 7 in an embodiment, the hinge fixing structure includes a bolt 51 and a nut sealing piece 52, and the bolt 51 and the nut sealing piece 52 are arranged on the outer sides of the two third hinge parts 31 respectively.

[0059] The nut sealing piece 52 includes a circular sealing piece 521 and a threaded cylinder 522, the threaded cylinder 522 is connected to one side of the circular sealing piece 521 close to the third hinge part 31, the threaded cylinder 522 extends in the direction perpendicular to the plane of the circular sealing piece 521, the threaded cylinder 522 extends from one side of the hinge structure to the other side of the hinge structure, and the bolt 51 is embedded in the threaded cylinder 522 from the other side of the hinge structure and connected with the internal thread of the threaded cylinder 522.

[0060] Specifically, the outer part of the threaded cylinder 522 is a smooth surface, which reduces the friction between the threaded cylinder 522 and the hinge structure; the bolt 51 is embedded in the threaded cylinder 522 and connected with the internal thread of the threaded cylinder 522, so that the first hinge part 11, the second hinge part 21 and the third hinge part 31 are arranged to rotate relative to the hinge fixing structure.

[0061] AsFigure 5 and Figure 7 As shown, in one embodiment, a limiting block 523 is provided on the side of the circular seal 521 near the third hinge portion 31, and a second limiting groove 311 is provided on the side of the third hinge portion 31 near the circular seal 521, and the limiting block 523 is engaged in the second limiting groove 311.

[0062] Specifically, the limiting block 523 is a long strip structure, and the limiting groove is also a long strip structure. The limiting block 523 is engaged in the second limiting groove 311 to prevent the circular seal 521 from rotating relative to the third hinge part 31, and to prevent the bolt 51 and the threaded cylinder 522 from loosening after repeated use of the elastic hinge for eyeglasses, which would affect the user's wearing experience.

[0063] like Figures 8-9 As shown, in one embodiment, the hinge fixing structure further includes a bolt seal 53, which is disposed between the third hinge portion 31 and the bolt 51. The bolt seal 53 includes an annular sealing plate 531 and a first cylindrical body 532. The annular sealing plate 531 is provided with a second through hole 533 at the position corresponding to the third hinge portion 31. The first cylindrical body 532 is connected to the second through hole 533 of the annular sealing plate 531 and extends in a direction perpendicular to the plane where the annular sealing plate 531 is located. The first cylindrical body 532 is embedded in the third hinge portion 31, and the outer wall of the first cylindrical body 532 is in contact with the inner wall of the third hinge portion 31. A third limiting groove 534 is provided on the side of the annular sealing plate 531 near the bolt 51. The third limiting groove 534 is coaxially disposed and communicates with the second through hole 533.

[0064] The bolt seal 53 is disposed between the third hinge portion 31 and the bolt 51, which reduces the force exerted by the bolt 51 on the third hinge portion 31 and prevents the bolt 51 from damaging the third hinge portion 31 when it is connected to the threaded cylinder 522.

[0065] The annular sealing plate 531 has a third limiting groove 534 on the side near the bolt 51. When the bolt 51 is connected to the threaded cylinder 522, the head of the bolt 51 is located in the third limiting groove 534, which prevents the head of the bolt 51 from protruding from the surface of the bolt sealing member 53 and scratching the user when the user wears glasses. At the same time, it improves the aesthetics of the elastic hinge for glasses.

[0066] like Figures 1-2 and Figure 10As shown in the drawings, in an embodiment, the hinge fixing structure further comprises two gaskets 54, which are respectively arranged between the corresponding third hinge part 31 and the second hinge part 21, and the gasket 54 comprises an annular sheet 541 and a second cylinder 542, the third through hole 543 is arranged on the annular sheet 541 corresponding to the position of the second hinge part 21, the second cylinder 542 is connected to the third through hole 543 of the annular sheet 541 and extends in the direction perpendicular to the plane of the annular sheet 541, and the second cylinder 542 is embedded in the second hinge part 21, and the outer wall of the second cylinder 542 is in contact with the inner wall of the second hinge part 21.

[0067] Specifically, the material of the gasket 54 is red copper material, the gasket 54 has self-lubricating effect, can reduce the friction between the third hinge part 31 and the second hinge part 21, thereby improving the wear resistance of the hinge structure and prolonging the service life of the hinge structure.

[0068] As shown in the drawings, Figures 1-3 and Figure 5 As shown in the drawings, in an embodiment, the inner side of the two third hinge parts 31 is formed with a moving groove 312, the opening of the moving groove 312 faces the second hinge part 21, the second end 122 of the arc-shaped elastic sheet 12 extends to both ends along the width direction of the arc-shaped elastic sheet 12, and the second end 122 of the arc-shaped elastic sheet 12 is slidably arranged in the moving groove 312; when the arc-shaped elastic sheet 12 is in the initial state, the second end 122 of the arc-shaped elastic sheet 12 and one end of the moving groove 312 are in contact with each other; as the opening angle of the glasses leg increases, the second end 122 of the arc-shaped elastic sheet 12 gradually approaches the other end of the moving groove 312 until abutting against each other to limit the opening angle of the glasses leg.

[0069] Specifically, the second end 122 of the arc-shaped elastic sheet 12 extends to both ends along the width direction of the arc-shaped elastic sheet 12, and the two ends of the second end 122 move in the moving groove 312; in the glasses closed state, the second end 122 of the arc-shaped elastic sheet 12 abuts against one end of the moving groove 312, in the glasses leg opening process, the second end 122 of the arc-shaped elastic sheet 12 moves in the moving groove 312 to the other end of the moving groove 312, and when the glasses leg is opened to about 90°, the second end 122 abuts against the other end of the moving groove 312; by arranging the moving groove 312, a moving space is provided for the second end 122 of the arc-shaped elastic sheet 12, and in the opening process of the glasses leg, the second end 122 of the arc-shaped elastic sheet 12 moves in the moving groove 312 and gradually approaches the other end of the moving groove 312, so that direct force transmission between the arc-shaped elastic sheet 12 and the second connecting part 3 can be realized, and the arc-shaped elastic sheet 12 as a direct stretching stress point is avoided from being broken.

[0070] The utility model discloses a kind of glasses, including the above-mentioned elastic hinge part for glasses, glasses frame and glasses leg, and the elastic hinge part for glasses one end is used to connect with glasses frame, and the other end of the elastic hinge part for glasses is used to connect with glasses leg.

[0071] In an embodiment, the two sides of the spectacle frame are respectively provided with a left peg head and a right peg head, and the spectacle comprises two spectacle elastic hinges, which are respectively arranged at the left peg head and the right peg head of the spectacle.

[0072] Further, one of the first connecting part 2 and the second connecting part 3 is connected with the peg head, and the connection mode can be selected from one of hot melt connection, riveting or screw connection.

[0073] In an embodiment, the other of the first connecting part 2 and the second connecting part 3 is used for connecting with one end of the spectacle leg, and the connection mode of the spectacle leg and the first connecting part 2 or the second connecting part 3 is selected from one of hot melt connection, riveting or screw connection.

[0074] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An elastic hinge for eyeglasses for the connection of the eyeglasses legs to the eyeglasses frame, characterized in that: The elastic connecting part, the first connecting part and the second connecting part, one end of the elastic connecting part is provided with a first hinge part, one end of the first connecting part is provided with a second hinge part, one end of the second connecting part is provided with a third hinge part, the first hinge part, the second hinge part and the third hinge part are hinged to form a hinge structure; the elastic connecting part comprises an arc-shaped elastic sheet, the arc-shaped elastic sheet is arranged around the hinge structure, the first end of the arc-shaped elastic sheet is connected with the first hinge part, the second end of the arc-shaped elastic sheet is a free end and a gap is left between the arc-shaped elastic sheet and the hinge structure; the other end of the elastic connecting part is provided with an elastic clamping block, a first clamping groove is formed in the first connecting part, and the elastic clamping block is detachably clamped in the first clamping groove; when the glasses leg is unfolded to about 90°, the second end of the arc-shaped elastic sheet abuts against the second connecting part to provide elasticity for further expansion of the glasses leg; when the glasses leg is further expanded from about 90°, the gap between the second end of the arc-shaped elastic sheet and the hinge structure gradually decreases until the second end of the arc-shaped elastic sheet abuts against the hinge structure.

2. The elastomeric hinge for eyeglasses of claim 1, wherein: The side surface of the first connecting part is provided with a first limiting groove, one end of the first limiting groove is communicated with the wall of the first connecting part near the second hinge part, and the other end of the first limiting groove is communicated with the first clamping groove; one end of the elastic clamping block is connected with the other end of the elastic connecting part, the free end of the elastic clamping block is arc-shaped and protrudes from the plane of the elastic connecting part, the elastic connecting part is embedded in the first limiting groove, and the free end of the elastic clamping block is embedded in the first clamping groove.

3. The elastomeric hinge for eyeglasses of claim 2, wherein: Further comprising a shell, the shell is a hollow structure with one end open, the first connecting part and the elastic connecting part away from one end of the hinge structure are embedded in the shell; the side surface of the shell is provided with a first through hole penetrating the side surface of the shell at a position corresponding to the elastic clamping block, and the free end of the elastic clamping block protrudes from the first clamping groove and is embedded in the first through hole; The open end of the shell is provided with a second clamping groove in the width direction corresponding to the first hinge part, one end of the second clamping groove is communicated with the outer wall of the shell, and the other end of the second clamping groove is communicated with the inner wall of the shell, when the first connecting part and the elastic connecting part away from one end of the hinge structure are embedded in the shell, the second clamping groove provides a space for the rotation of the first hinge part; when the glasses leg is unfolded to about 90°, there is a gap between the second clamping groove and the first hinge part; when the glasses leg is further expanded from about 90°, the gap between the first hinge part and the second clamping groove gradually decreases until the outer wall of the second hinge part and the second clamping groove.

4. The elastomeric hinge for eyeglasses of claim 1, wherein: The number of the first hinge part is one, the number of the second hinge part is two, and the number of the third hinge part is two; the two sides of the arc-shaped elastic sheet in the width direction protrude from the two sides of the first hinge part in the width direction, and the two sides of the first hinge part and the corresponding two sides of the arc-shaped elastic sheet form two grooves; there is a gap between the first end and the second end of the arc-shaped elastic sheet. A transition connecting part is arranged between the first connecting part and the second connecting part, two second connecting parts are arranged in the two grooves respectively, and one end of the transition connecting part away from the second connecting part is connected with the first connecting part through the gap; Two third connecting parts are arranged on the outer sides of the two second connecting parts respectively; The first connecting part, the second connecting part and the third connecting part are all circular annular, a hinge fixing structure is arranged through the first connecting part, the second connecting part on the two sides of the first connecting part and the third connecting part on the two sides of the second connecting part to form a hinge structure, and the first connecting part and the second connecting part move relative to the hinge fixing structure.

5. The elastomeric hinge for eyeglasses of claim 4, wherein: The hinge fixing structure comprises a bolt and a nut sealing piece, and the bolt and the nut sealing piece are arranged on the outer sides of the two third connecting parts respectively; The nut sealing piece comprises a circular sealing piece and a threaded cylinder body, the threaded cylinder body is connected to one side of the circular sealing piece close to the third connecting part, the threaded cylinder body extends in a direction perpendicular to the plane where the circular sealing piece is located, the threaded cylinder body extends from one side of the hinge structure to the other side of the hinge structure, and the bolt is embedded in the threaded cylinder body from the other side of the hinge structure and connected with the internal thread of the threaded cylinder body.

6. The elastomeric hinge for eyeglasses of claim 5, wherein: A limiting block is arranged on one side of the circular sealing piece close to the third connecting part, and a second limiting groove is arranged on one side of the third connecting part close to the circular sealing piece, and the limiting block is clamped in the second limiting groove.

7. The elastomeric hinge for eyeglasses of claim 5, wherein: The hinge fixing structure further comprises a bolt sealing piece arranged between the third connecting part and the bolt, the bolt sealing piece comprises an annular sealing sheet and a first cylinder body, the annular sealing sheet is provided with a second through hole corresponding to the position of the third connecting part, the first cylinder body is connected to the second through hole of the annular sealing sheet and extends in a direction perpendicular to the plane where the annular sealing sheet is located, the first cylinder body is embedded in the third connecting part, and the outer wall of the first cylinder body is in contact with the inner wall of the third connecting part; one side of the annular sealing sheet close to the bolt is provided with a third limiting groove, and the third limiting groove is coaxially arranged and communicated with the second through hole.

8. The elastomeric hinge for eyeglasses of claim 4, wherein: The hinge fixing structure further comprises two gaskets, the two gaskets are arranged between the corresponding third connecting part and the second connecting part respectively, the gasket comprises an annular sheet and a second cylinder body, the annular sheet is provided with a third through hole corresponding to the position of the second connecting part, the second cylinder body is connected to the third through hole of the annular sheet and extends in a direction perpendicular to the plane where the annular sheet is located, the second cylinder body is embedded in the second connecting part, and the outer wall of the second cylinder body is in contact with the inner wall of the second connecting part.

9. The elastomeric hinge for eyeglasses of claim 1, wherein: The inner side of each of the two third hinge parts is formed with a moving groove, the opening of the moving groove faces the second hinge part, the second end of the arc-shaped elastic sheet extends to both ends along the width direction of the arc-shaped elastic sheet, and the second end of the arc-shaped elastic sheet is slidably arranged in the moving groove; when the arc-shaped elastic sheet is in the initial state, the second end of the arc-shaped elastic sheet and one end of the moving groove are in contact with each other; as the opening angle of the glasses leg increases, the second end of the arc-shaped elastic sheet gradually approaches the other end of the moving groove until they abut against each other to limit the opening angle of the glasses leg.

10. Eyeglasses, characterized in that: The elastic hinge part for glasses, the glasses frame and the glasses leg according to any one of claims 1-9, one end of the elastic hinge part is used for connecting with the glasses frame, and the other end of the elastic hinge part is used for connecting with the glasses leg.

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