An adjustable double-hinge structure for eyeglasses

Abstract

An adjustable double-hinge structure for eyeglasses includes a frame, temples, and a hinge mechanism. The hinge mechanism includes a base, a first pin, a second pin, a first hinge member, and a second hinge member. The base has several through slots. The first and second pins are detachably rotatably engaged with each through slot. One end of the first hinge member is rotatably engaged with the first pin, and the other end is fixedly connected to the temple. One end of the second hinge member is rotatably engaged with the second pin, and the other end is fixedly connected to the frame. The temples maintain the hinge rotation function while being easily mounted at different positions on the base, allowing for fine-tuning of the spacing and opening angle between a pair of temples. Consumers can adjust the size according to their facial contours and wearing comfort, enabling a single pair of eyeglasses to be available in multiple sizes.

Description

Technical Field

[0001] This utility model relates to the field of eyeglasses technology, specifically to an adjustable double-hinge structure for eyeglasses. Background Technology

[0002] The temples are one of the main accessories of eyeglasses. To facilitate folding and storage, hinges are needed to connect the temples to the frame. Currently, most eyeglasses on the market use conventional hinges. The temples are mounted by rotating through the hinge structure. One side of the hinge structure is attached to the frame, and the other side is attached to the temple. The hinge engagement is achieved by aligning the hinge holes and inserting a pin.

[0003] The existing technology has the following problems: First, the traditional hinge structure has a fixed position after the pins are inserted, allowing only coaxial rotation to achieve the purpose of flipping the temples. This results in a fixed relative position between the temples and the frame, making it impossible to adapt to the facial contours of different users. For example, if a manufacturer sells a pair of glasses with a preset maximum distance of 14cm between the two temples when open, then consumers with a face width slightly greater than 14cm will not be able to choose this pair of glasses, while those with a face width significantly smaller than 14cm will find it too loose and unable to choose it.

[0004] Existing technologies generally address these issues by allowing the flexible temples to expand outwards. However, firstly, the elastic deformation of the temples also generates resistance, which can clamp the wearer's face, causing discomfort. Moreover, flexible temples are difficult to use to solve the problem of excessively large temple spacing. Secondly, after prolonged wear, the material of flexible temples is prone to fatigue and elastic failure, resulting in a reduced lifespan.

[0005] If a convenient position adjustment structure can be designed at the hinge mechanism, so that the relative position between the temples and the frame can be stably adjusted, thereby forming a controllable adjustment of the distance between the two temples, then consumers can control the distance between the temples themselves to adapt to their own facial features and wear them comfortably.

[0006] Manufacturers can also reduce the number of different specifications of the same glasses, so that a single style and specification can be used to suit a wide range of users, thus reducing the cost of excess inventory.

[0007] Traditional hinge structures are coaxial single-hole hinge structures. Repeated opening and closing of the temple causes concentrated wear at this single hole, reducing the lifespan of the hinge.

[0008] Therefore, it is necessary to improve the existing hinge structure design to obtain a new structure that overcomes the aforementioned technical problems. Summary of the Invention

[0009] To address the shortcomings of the aforementioned technologies, this invention provides an adjustable double-hinge structure for eyeglasses.

[0010] The technical solution of this utility model is as follows: An adjustable double-hinge structure for eyeglasses, including a frame, temples, and a hinge mechanism. The hinge mechanism includes a base, a first pin, a second pin, a first hinge member, and a second hinge member. The base is provided with a plurality of through slots. The first pin and the second pin are detachably rotatably engaged with each through slot. One end of the first hinge member is sleeved and rotatably engaged with the first pin, and the other end is fixedly connected to the temple. One end of the second hinge member is sleeved and rotatably engaged with the second pin, and the other end is fixedly connected to the frame.

[0011] Further features of this invention: The base includes an upper surface facing vertically upwards when the glasses are worn and a lower surface at the other end. Two arc-shaped grooves are symmetrically arranged on the base, penetrating the upper and lower surfaces. Each of the two arc-shaped grooves has several positioning grooves spaced apart along its length. These positioning grooves are located on the upper surface of the base. The first and second pins are respectively inserted into the two arc-shaped grooves and each includes a shaft portion, an upper limit cap portion, a lower limit cap portion, and a limiting protrusion portion. The shaft portion slides in cooperation with the arc-shaped groove, and the limiting protrusion portion slides up and down axially with the shaft portion, sinking into or dislodging from each positioning groove. Both the first hinge and the second hinge include a hinge end and a connecting end. The hinge end is provided with a hinge hole that matches the diameter of the shaft. The hinge hole of the first hinge is rotatably engaged with the shaft of the first pin. The connecting end of the first hinge is fixedly connected to the temple of the mirror. The hinge hole of the second hinge is rotatably engaged with the shaft of the second pin. The connecting end of the second hinge is fixedly connected to the frame.

[0012] A further feature of this invention is that the hinge ends of the first and second hinge members are provided with grooves on the side facing the base. The height of the groove relative to the hinge hole axially matches the thickness from the upper end face to the lower end face of the base. On the inner wall surface of the groove adjacent to the upper end face, an unlocking groove is provided corresponding to the hinge hole and is adapted to the limiting protrusion. When the limiting protrusion enters the unlocking groove from the stop groove, the shaft moves along the length direction of the arc-shaped through groove.

[0013] A further feature of this invention is that the axial length of the shaft is greater than the thickness of the first or second hinge member, and the upper and lower limit caps are located on opposite sides of the hinge hole along its axial direction, with diameters greater than the hinge hole diameter.

[0014] A further feature of this invention is that both the first hinge and the second hinge have connecting arms on their sides away from the base, which are fixedly connected to the temples and frames or detachably assembled with them.

[0015] A further feature of this invention is that the end of the base away from the wearer is provided with an arc-shaped portion, and the temple and frame adjacent to the arc-shaped portion are provided with chamfers, the chamfered end face being tangent to the arc-shaped portion.

[0016] A further feature of this invention is that the base has a first through groove on the side near the temple and a second through groove on the side near the frame. The cross-sectional profile of the first through groove is adapted to the cross-sectional profile of the first pin. The second through groove is an arc-shaped through groove. Each of the second through grooves has three stop grooves spaced apart along its length.

[0017] The beneficial effects of this utility model are as follows: Through the structural design of the frame, temples, base, first pin, second pin, first hinge, and second hinge, the temples can maintain the hinge rotation function while being conveniently assembled at different positions on the base, forming a pair of temples whose spacing and opening angle can be finely adjusted and controlled. Consumers can adjust and control the size according to their facial contours and wearing comfort, so that a single pair of glasses can have multiple sizes.

[0018] Specifically, the double hinge structure connects the first and second pins to the temples and the frame hinges respectively, and the first and second pins are detachably assembled with the base. By adjusting the pins in different slots on the base, the position of the temples relative to the frame can be adjusted, thereby controlling the distance between a pair of temples.

[0019] In a further optimized design of the embodiment, the through groove is designed as a pair of arc-shaped through grooves. Both arc-shaped through grooves on the upper surface of the base are provided with several stop grooves spaced apart along their length. The first and second pins are provided with limiting protrusions, and the first and second hinges correspond to the unlocking grooves of the limiting protrusions. (See attached instruction manual.) Figure 2 , 3 As shown in Figure 4, when the assembly is complete and the glasses are worn daily, the limiting protrusion sinks into a certain position groove. At this time, the pin is locked, and the hinge hole of the hinge piece rotates around the pin, realizing the normal flipping opening and closing of the temples and frame. When it is necessary to adjust the position of the temples relative to the frame, please refer to the instruction manual. Figure 4 In the middle, push the pin up, drive the limiting protrusion to leave the gear position groove and enter the unlocking groove. At this time, the pin is no longer restricted. The consumer can push the pin along the arc-shaped through groove to reach the desired gear position. Then press the pin down, drive the limiting protrusion from the unlocking groove back to the gear position groove, fix the position of the main pin, and complete the adjustment.

[0020] With the design of the embodiment, consumers can unlock, displace, and fix the pin manually by pushing, moving, and pressing it without tools, making operation simple. The pin slides down under gravity to lock, and can only be unlocked by manually pushing it upward. At the same time, the unlocking groove is set around the hinge hole and has an angular orientation. Only when the hinge is rotated to a preset angle, such as when the angle mark on the hinge and the base is aligned, will the unlocking groove align with the stop groove. At this time, the limiting protrusion can move. When the angle is misaligned, the limiting protrusion cannot move. Therefore, the structure of this application is stable and reliable. Attached Figure Description

[0021] Figure 1 The structure of this utility model embodiment Figure 1 .

[0022] Figure 2 The structure of this utility model embodiment Figure 2 .

[0023] Figure 3 The structure of this utility model embodiment Figure 3 .

[0024] Figure 4 The structure of this utility model embodiment Figure 4 .

[0025] Figure 5 The structure of this utility model embodiment Figure 5 .

[0026] Figure 6 The structure of this utility model embodiment Figure 6 .

[0027] Figure 7 The structure of this utility model embodiment Figure 7 .

[0028] Among them, 1-frame, 11-bevel, 2-temple, 3-base, 31-upper end face, 32-arc-shaped through groove, 321-first through groove, 322-second through groove, 33-position groove, 4-first pin, 41-shaft, 42-upper limit cap, 43-lower limit cap, 44-limiting protrusion, 5-second pin, 6-first hinge, 61-hinge hole, 62-groove, 63-unlocking groove, 64-connecting arm, 7-second hinge.

[0029] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. Furthermore, the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0030] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0031] like Figure 1-7 As shown, an adjustable double-hinge structure for eyeglasses includes a frame 1, temples 2, and a hinge mechanism. The hinge mechanism includes a base 3, a first pin 4, a second pin 5, a first hinge member 6, and a second hinge member 7. The base 3 is provided with several through slots. The first pin 4 and the second pin 5 are detachably rotatably engaged with each through slot. One end of the first hinge member is sleeved and rotatably engaged with the first pin 4, and the other end is fixedly connected to the temple 2. One end of the second hinge member is sleeved and rotatably engaged with the second pin 5, and the other end is fixedly connected to the frame 1.

[0032] The base 3 includes an upper end face 31 facing vertically upward when the glasses are worn and a lower end face at the other end. The base 3 is symmetrically provided with two arc-shaped through grooves 32 that penetrate the upper end face 31 and the lower end face. Each of the two arc-shaped through grooves 32 is provided with several stop grooves 33 at intervals along the length direction. The several stop grooves 33 are located at the upper end face 31 of the base 3. The first pin 4 and the second pin 5 are respectively inserted into the two arc-shaped through grooves 32, and each includes a shaft portion 41, an upper limit cap portion 42, a lower limit cap portion 43 and a limit protrusion portion 44. The shaft portion 41 is slidably engaged with the arc-shaped through groove 32, and the limit protrusion portion 44 slides up and down with the axial direction of the shaft portion 41 and falls into or falls out of each stop groove 33. Both the first hinge member 6 and the second hinge member 7 include a hinge end and a connecting end. The hinge end is provided with a hinge hole 61 that matches the diameter of the shaft portion 41. The hinge hole 61 of the first hinge member 6 is rotatably engaged with the shaft portion 41 of the first pin 4. The connecting end of the first hinge member is fixedly connected to the temple 2. The hinge hole 61 of the second hinge member 7 is rotatably engaged with the shaft portion 41 of the second pin 5. The connecting end of the second hinge member is fixedly connected to the frame 1.

[0033] The hinge ends of the first hinge member 6 and the second hinge member 7 are provided with grooves 62 on the side facing the base 3. The height of the groove 62 relative to the hinge hole 61 in the axial direction is adapted to the thickness of the upper end surface 31 to the lower end surface of the base 3. The groove 62 is adjacent to the inner wall of the upper end surface 31. A locking groove 63 adapted to the limiting protrusion 44 is provided at the hinge hole 61. When the limiting protrusion 44 enters the locking groove 63 from the stop groove 33, the shaft part 41 moves along the length direction of the arc-shaped through groove 32.

[0034] The axial length of the shaft portion 41 is greater than the thickness of the first hinge member 6 or the second hinge member 7. The upper limit cap portion 42 and the lower limit cap portion 43 are located on both sides of the hinge hole 61 in the axial direction, and their diameters are greater than the diameter of the hinge hole 61.

[0035] Both the first hinge 6 and the second hinge 7 are provided with connecting arms 64 on the side away from the base 3. The connecting arms 64 are fixedly connected to the temple 2 and the frame 1 or are detachably assembled.

[0036] The base 3 has an arc-shaped portion 34 at the end away from the wearer, and the temple 2 and the frame 1 have chamfers 11 in the part adjacent to the arc-shaped portion 34, with the end face of the chamfer 11 being tangent to the arc-shaped portion 34.

[0037] The base has a first through groove 321 on the side near the temple and a second through groove 322 on the side near the frame. The cross-sectional profile of the first through groove is adapted to the cross-sectional profile of the first pin. The second through groove is an arc-shaped through groove. Each of the second through grooves has three stop grooves spaced apart along its length.

[0038] Through the structural design of the frame 1, temple 2, base 3, first pin 4, second pin 5, first hinge 6, and second hinge 7, the temple 2 can maintain the hinge rotation function while being conveniently assembled at different positions on the base 3. This allows for fine-tuning of the spacing and opening angle between a pair of temples 2, enabling consumers to adjust the size according to their facial contours and wearing comfort. This allows a single pair of glasses to be available in multiple sizes.

[0039] Specifically, a double-hinge structure is used, in which the first pin 4 and the second pin 5 are respectively connected to the temple 2 and the frame 1, and the first and second pins are detachably assembled with the base 3. By adjusting the pins in different slots on the base 3, the position of the temple 2 relative to the frame 1 can be adjusted, thereby controlling the distance between a pair of temples 2.

[0040] In a further optimized design of the embodiment, the through groove is designed as a pair of arc-shaped through grooves 32. Both arc-shaped through grooves 32 on the upper surface 31 of the base 3 are provided with several stop grooves 33 spaced apart along their length. The first pin 4 and the second pin 5 are provided with limiting protrusions 44, and the first hinge 6 and the second hinge 7 correspond to the unlocking grooves 63 of the limiting protrusions 44. (See attached instruction manual.) Figure 2 , 3 As shown in Figure 4, when the assembly is complete and the glasses are worn daily, the limiting protrusion 44 is inserted into a certain position groove 33. At this time, the pin position is locked, and the hinge hole 61 of the hinge component rotates around the pin, realizing the normal flipping opening and closing of the temple 2 and the frame 1. When it is necessary to adjust the positional relationship between the temple 2 and the frame 1, as shown in the instruction manual... Figure 4 In the middle, push the pin upward, drive the limiting protrusion 44 away from the gear position groove 33 and into the unlocking groove 63. At this time, the pin is no longer restricted. The consumer can push the pin along the arc-shaped through groove 32 to reach the desired gear position groove 33. Then press the pin down, drive the limiting protrusion 44 from the unlocking groove 63 back to the gear position groove 33, fix the position of the main pin, and complete the adjustment.

[0041] With the design of the embodiment, consumers can unlock, displace, and fix the pin manually by pushing, moving, and pressing it without tools, making the operation simple. The pin slides down under gravity to lock, and can only be unlocked by manually pushing it up. At the same time, the unlocking groove 63 is set around the hinge hole 61 and has an angular orientation. Only when the hinge is rotated to a preset angle, such as when the angle mark on the hinge and the base 3 is aligned, will the unlocking groove 63 be aligned with the stop groove 33. At this time, the limiting protrusion 44 can move. When the angle is misaligned, the limiting protrusion 44 cannot move. Therefore, the structure of this application is stable and reliable.

[0042] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. An adjustable double-hinge structure for eyeglasses, comprising a frame, temples, and a hinge mechanism, characterized in that: The hinge mechanism includes a base, a first pin, a second pin, a first hinge member, and a second hinge member. The base is provided with several through slots. The first pin and the second pin are detachably rotatably engaged with each through slot. One end of the first hinge member is sleeved and rotatably engaged with the first pin, and the other end is fixedly connected to the temple. One end of the second hinge member is sleeved and rotatably engaged with the second pin, and the other end is fixedly connected to the frame.

2. The adjustable double-hinge structure for eyeglasses according to claim 1, characterized in that: The base includes an upper surface facing vertically upwards when the glasses are worn and a lower surface at the other end. Two arc-shaped through-slots are symmetrically arranged on the base, penetrating the upper and lower surfaces. Each of the two arc-shaped through-slots has several stop slots spaced apart along its length. The stop slots are located on the upper surface of the base. The first pin and the second pin are respectively inserted into the two arc-shaped through-slots, and each includes a shaft portion, an upper limit cap portion, a lower limit cap portion, and a limit protrusion portion. The shaft portion slides in cooperation with the arc-shaped through-slots, and the limit protrusion portion slides up and down with the axial direction of the shaft portion to enter or exit each stop slot. Both the first hinge and the second hinge include a hinge end and a connecting end. The hinge end is provided with a hinge hole that matches the diameter of the shaft. The hinge hole of the first hinge is rotatably engaged with the shaft of the first pin. The connecting end of the first hinge is fixedly connected to the temple of the mirror. The hinge hole of the second hinge is rotatably engaged with the shaft of the second pin. The connecting end of the second hinge is fixedly connected to the frame.

3. The adjustable double-hinge structure for eyeglasses according to claim 2, characterized in that: The hinge ends of the first and second hinges are provided with grooves on the side facing the base. The height of the groove relative to the hinge hole axially matches the thickness from the upper end face to the lower end face of the base. On the inner wall surface of the groove adjacent to the upper end face, an unlocking groove is provided corresponding to the hinge hole and is adapted to the limiting protrusion. When the limiting protrusion enters the unlocking groove from the stop groove, the shaft moves along the length direction of the arc-shaped through groove.

4. The adjustable double-hinge structure for eyeglasses according to claim 3, characterized in that: The axial length of the shaft is greater than the thickness of the first or second hinge. The upper limit cap and the lower limit cap are located on both sides of the hinge hole along the axial direction, and their diameters are greater than the diameter of the hinge hole.

5. The adjustable double-hinge structure for eyeglasses according to claim 4, characterized in that: Both the first hinge and the second hinge have connecting arms on their sides away from the base. These connecting arms are either fixedly connected to the temples or detachably assembled with the frame.

6. The adjustable double-hinge structure for eyeglasses according to claim 5, characterized in that: The base has an arc-shaped portion at the end away from the wearer, and the temple and frame have chamfered edges on the portion adjacent to the arc-shaped portion, with the chamfered end face tangent to the arc-shaped portion.

7. The adjustable double-hinge structure for eyeglasses according to claim 6, characterized in that: The base has a first through groove on the side near the temple and a second through groove on the side near the frame. The cross-sectional profile of the first through groove is adapted to the cross-sectional profile of the first pin. The second through groove is an arc-shaped through groove. Each of the second through grooves has three stop grooves spaced apart along its length.

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