Temple distance adjustment structure for eyeglasses

Abstract

The utility model provides a kind of temple distance adjusting structure of glasses, belong to glasses technical field.It solves how to improve the problem of the compatibility of glasses.The temple distance adjusting structure of present glasses, glasses include frame and two legs, temple distance adjusting structure includes socket being opened in the both ends of the frame, plugboard being hinged in the front end of the leg and two pieces of abutting cam being hinged in the back of the frame, each socket is opened along the length direction of the frame, the plugboard is long strip and is set along transverse, two plugboards are inserted in two sockets and can slide along the length direction of the frame, the back of the frame is close to the both ends and is equipped with positioning hole, two positioning holes are set through the side wall of corresponding socket, two abutting cams are embedded in two positioning holes and and corresponding plugboard side surface abutting tightly.The temple distance adjusting structure of present glasses can effectively improve the compatibility of glasses.

Description

Technical Field

[0001] This utility model belongs to the field of eyeglasses technology and relates to an adjustable structure for the temple spacing of eyeglasses. Background Technology

[0002] Eyeglasses are very common optical devices in modern life. They generally consist of a frame and two temples hinged to both ends of the frame, such as the eyeglass hinge assembly disclosed in Chinese Patent (Application Publication No.: CN103238100A), which connects the temples and the eyeglass frame. The eyeglass frame can be composed of one or more frame components. The components of the eyeglasses (including the temples and the eyeglass frame) are replaceable, allowing for quick and easy changes to the color, shape, and style of the glasses. The temples are securely connected to the eyeglass frame, but their connection method allows for easy removal and replacement. The temples need to deform, bend, or move beyond their normal orientation to allow for easy disconnection. In a preferred embodiment, the temple hinge assembly includes a hook-like element and a pivot, wherein the pivot includes a groove or cut-off portion positioned such that the hook-like element can only engage / disengage when the temple is deformed or moves beyond its normal position. According to paragraphs 0057-0058 of the specification in the prior art document, the eyeglass assembly includes a frame and two temples, which are pivotally connected to the frame via a hinge assembly or connecting device.

[0003] As is generally known, when purchasing and selecting glasses, users often consider many factors, among which the fit to their face width is indispensable. Specifically, users will choose frames whose length fits their face. However, it is worth mentioning that glasses are not disposable items, especially functional glasses such as nearsightedness glasses and farsightedness glasses, whose lifespan is usually around 3-5 years. During this period, the user's weight will inevitably change, especially with weight gain. In this case, the user's face width will inevitably widen to varying degrees due to weight gain. Therefore, the distance between the two temples will no longer fit the user's face width. When wearing them, the user's cheek skin will be squeezed against the temples, causing the temples to bend outwards. Over time, this will inevitably cause irreversible deformation of the glasses and affect their lifespan. Secondly, when the temples bend outwards, they will also squeeze the user's cheek skin, causing pain when wearing them and leaving indentations on the user's cheek skin that will not disappear in a short time. The fit is poor. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a temple spacing adjustment structure for eyeglasses. The technical problem this invention aims to solve is: how to improve the fit of eyeglasses.

[0005] The objective of this utility model can be achieved through the following technical solution: a temple spacing adjustment structure for eyeglasses, the eyeglasses including a frame and two temples, characterized in that the temple spacing adjustment structure includes slots opened at both ends of the frame, insert plates hinged to the front ends of the temples, and two abutting cams hinged to the back of the frame, each slot being opened along the length direction of the frame, the insert plates being elongated and arranged laterally, the two insert plates being inserted into the two slots and being able to slide along the length direction of the frame, positioning holes being opened near both ends of the back of the frame, the two positioning holes being arranged through the corresponding sidewalls of the slots, and the two abutting cams being embedded in the two positioning holes and abutting against the sides of the corresponding insert plates.

[0006] In the temple spacing adjustment structure of this eyeglasses, the glasses include a frame and two temples. Compared to existing technology, the difference in this application lies in the fact that slots are provided at both ends of the frame along its length, and each temple has a horizontally arranged, elongated insert plate hinged to its front end. The two insert plates are inserted into the two slots respectively and can slide along the length of the frame. That is, before wearing the glasses, the user can pull or push the two temples outwards or inwards along the length of the frame according to the width of their head, causing the insert plates to slide inwards or outwards. In this state, the two temples can slide synchronously with the insert plates, thereby achieving the adjustment of the temple spacing. The present application addresses the adaptive adjustment of the distance between the two temples. Specifically, it creates positioning holes with connecting slots at both ends of the back of the frame and hinges clamping cams at both ends of the back of the frame. These clamping cams rotate around the hinge and eventually embed into the corresponding positioning holes. At this point, the two clamping cams press against the sides of the two insert plates. Through the clamping action of the clamping cams and the sides of the insert plates, the insert plates are limited in the length direction of the frame. This ensures that the two temples remain positioned in the current state. While enabling adaptive adjustment of the distance between the two temples, the application also ensures the stability of the connection between the two temples and the frame during wear, guaranteeing the fit of the glasses.

[0007] In the aforementioned temple spacing adjustment structure for eyeglasses, the outer wall of the abutting cam has a plurality of teeth, which are spaced apart circumferentially along the abutting cam. The side wall of the insert plate facing the abutting cam has a plurality of grooves, which are spaced apart along the length of the insert plate. When the abutting cam rotates around the hinge and engages with the positioning hole, the teeth are engaged and positioned in the grooves. As a further specific embodiment, in this application, the abutting cam and the insert plate are positioned along the length of the frame by the engagement of the teeth on the outer wall of the abutting cam and the grooves on the insert plate.

[0008] In the aforementioned temple spacing adjustment structure for eyeglasses, both ends of the back of the frame have U-shaped hinges, and the two hinges are arranged opposite each other. The positioning hole is located within the hinge, and the clamping cam is hinged to the upper and lower side walls of the hinge via a rotating shaft. This design utilizes the upper and lower side walls of the hinge to support the two ends of the rotating shaft connecting the clamping cam, ensuring a stable connection. Furthermore, the hinge accommodates the clamping cam, preventing it from protruding excessively from the back of the frame and avoiding accidental rotation that could unlock the insert plate.

[0009] In the aforementioned temple spacing adjustment structure for eyeglasses, an L-shaped limiting groove is provided at one end of each of the two hinged parts. The clamping cam is T-shaped, and several gear teeth are formed on the outer wall of the hinged end of the clamping cam. The free end of the clamping cam abuts against the groove wall of the limiting groove. This design ensures that when the clamping cam locks the insert plate, its free end can abut against the groove wall of the limiting groove, thereby achieving overall positioning of the clamping cam. The preload effectively prevents the clamping cam from rotating and unlocking the insert plate due to impacts or misoperation.

[0010] In the aforementioned temple spacing adjustment structure for eyeglasses, the free end of the abutting cam has outwardly protruding abutting ribs along the vertical direction. The abutting ribs have at least two segments located on both sides of the hinged end of the abutting cam. The free end of the abutting cam is abutted against the groove wall of the limiting groove by the abutting ribs. The abutting ribs further ensure the tightness of the fit between the free end of the abutting cam and the groove wall of the limiting groove, thereby achieving sufficient positioning of the abutting cam. Furthermore, the abutting ribs also further improve the structural strength of the abutting cam.

[0011] In the aforementioned temple spacing adjustment structure for eyeglasses, the corners at the opposite ends of the two hinge parts are chamfered into an arc shape. This ensures a smooth surface transition at the edges of the hinge parts and prevents wear on the clamping ribs and sides of the hinge parts due to prolonged interference during rotation of the clamping cam.

[0012] In the aforementioned temple spacing adjustment structure for eyeglasses, each of the abutting cams has an inclined surface at the corner of its free end face, and the inclined surface extends to both sides of the free end edge of the abutting cam. This design ensures that, when the abutting cam is locked to the insert plate, the inclined surface maintains a certain gap between the side of the abutting cam facing the back of the frame and the frame, facilitating user unlocking.

[0013] In the aforementioned temple spacing adjustment structure for eyeglasses, several slots are provided on the sidewalls of each insert plate, and these slots are spaced apart along the length of the insert plate. Each insertion port has a positioning protrusion on its inner sidewall, which is embedded and positioned within any one of the slots. In actual operation, the positioning protrusion and the slots engage during insertion or removal of the insert plate, allowing for precise control of the insertion or removal amount. This ensures consistent translation of the two temples relative to the frame. Furthermore, this design provides a clear tactile feedback for the user, ensuring ease of operation. Moreover, this structure not only enables initial positioning of the insert plate even before the clamping cam contacts it, but also prevents the insert plate from sliding outwards relative to the insertion port due to the force exerted by the clamping cam on the sidewall when the clamping cam engages with the tooth groove during rotation, thus ensuring the accuracy of temple position adjustment.

[0014] In the aforementioned temple spacing adjustment structure for eyeglasses, each of the insert plates has a hinge plate at one end of its sidewall. The front end of the temple is hinged to the hinge plate. Each insert plate also has a strip-shaped hole on the sidewall of the hinge plate. The strip-shaped hole extends along the length of the insert plate and penetrates the other sidewall of the insert plate. Locking holes are also provided at both ends of the frame, inside the two hinged portions. Screws are screwed into the locking holes, and the screws pass through the strip-shaped holes. This design limits the sliding amount of the insert plates, especially when pulling the insert plates outwards, preventing excessive force from causing the insert plates to dislodge from the socket. Furthermore, the cooperation between the outer wall of the screw and the two sidewalls of the strip-shaped hole, along with the contact between the inner wall of the socket and the sidewall of the insert plate, ensures that the sliding direction of the insert plates is sufficiently limited.

[0015] In the aforementioned temple spacing adjustment structure for eyeglasses, the locking hole is a stepped hole. One end of the screw passes through the strip hole and is screwed to the inner end of the locking hole. The outer end of the screw is embedded in the locking hole and abuts against the stepped surface of the locking hole. This design ensures stable screw installation and limits the position of the insert plate. Simultaneously, the stepped hole accommodates the outer end of the screw and provides effective support, preventing the outer end of the screw from pressing against the side wall of the insert plate and preventing the slide plate from sliding.

[0016] Compared with existing technologies, the temple spacing adjustment structure of these glasses has the following advantages:

[0017] 1. The insert plate, which is hinged to the front of the temple, is inserted into the slot on the frame. Before wearing the glasses, the user can pull the insert plate outward or push it inward to adjust the distance between the two temples. The insert plate is held in place by a locking cam hinged to the frame, which ensures the stability of the two temples when worn.

[0018] 2. The insert plate and the clamping cam are engaged by locking teeth and grooves to ensure the locking effect on the insert plate.

[0019] 3. The insertion plate and the socket are connected by positioning protrusions and several limiting grooves, which provides the user with a clear tactile feedback when adjusting the spacing, ensuring the accuracy of the adjustment and ensuring that the insertion plate is initially locked when it is not locked by the clamping cam.

[0020] 4. By using the positioning protrusion and several limiting grooves, when the clamping cam is rotated to clamp and lock the insert plate, the force acting on the side wall of the insert plate can be prevented from causing the insert plate to move outward, thus ensuring that the adjustment accuracy can be controlled. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the glasses.

[0022] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0023] Figure 3 This is a side view of the glasses.

[0024] Figure 4 yes Figure 3 A sectional view taken along the AA direction.

[0025] Figure 5 yes Figure 3 A sectional view taken along the BB direction and a magnified view of a portion thereof.

[0026] Figure 6 This is a partial structural diagram of the picture frame.

[0027] Figure 7 It is a structural schematic diagram of the temple and the insert plate, as well as a partial enlarged view.

[0028] Figure 8 This is a schematic diagram of the clamping cam structure.

[0029] Figure 9 This is a structural schematic diagram of the clamping cam from another perspective.

[0030] In the picture,

[0031] 1. Frame; 11. Insert; 111. Positioning protrusion; 12. Positioning hole; 13. Clamping cam; 131. Gear tooth; 132. Clamping rib; 133. Inclined surface; 14. Hinge; 141. Limiting groove; 15. Locking hole; 151. Screw;

[0032] 2. Temple; 21. Insert plate; 211. Toothed groove; 212. Slot; 213. Hinge plate; 214. Strip hole. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] like Figure 1 , Figure 3 , Figure 6 as well as Figure 7 As shown, in the temple spacing adjustment structure of this pair of glasses, the glasses include a frame 1 and two temples 2, combined with... Figure 8 and Figure 9 The temple spacing adjustment structure includes two insert plates 21, two abutting cams 13, and slots 11 at both ends of the frame 1, wherein... Figure 6 As shown, the socket 11 is opened along the length of the frame 1, as follows: Figure 7 As shown, the insert plate 21 is elongated and arranged laterally. A hinge plate 213 is integrally formed at one end of one side wall of the insert plate 21. The front end of the temple 2 is hinged to the hinge plate 213 by screws. The other end of the insert plate 21 is inserted into the socket 11 and can slide along the length of the frame 1. On the back of the frame 1, U-shaped hinge portions 14 with opposite openings are integrally formed at both ends. On the back of the frame 1, there are hinge portions 14 located in each hinge portion 14 and extending through to the socket 11. The positioning hole 12 on the inner wall and the clamping cam 13 are specifically T-shaped. One of its horizontally arranged ends is the hinge end and the other vertically arranged end is the free end. The hinge end of the clamping cam 13 is located inside the hinge part 14 and is hinged to the upper and lower side walls of the hinge part 14 through a vertically arranged rotating shaft. This allows the hinge end of the clamping cam 13 to be inserted into or disengaged from the positioning hole 12 when the free end of the clamping cam 13 is moved to rotate around the shaft.

[0035] like Figure 4 , Figure 7 and Figure 8 As shown, a plurality of gear teeth 131 are formed on the outer side wall of the hinge end of the clamping cam 13. The plurality of gear teeth 131 are arranged at intervals along the circumferential direction of the hinge end of the clamping cam 13. A plurality of tooth grooves 211 are provided on the side wall of the insert plate 21 facing the clamping cam 13. The plurality of tooth grooves 211 are arranged at intervals along the length direction of the insert plate 21. When the hinge end of the clamping cam 13 is embedded in the positioning hole 12, the hinge end of the clamping cam 13 and the insert plate 21 can be engaged by the gear teeth 131 and the tooth grooves 211, thereby limiting the insert plate 21 in the length direction of the frame 1.

[0036] Combination Figure 9On the free end sidewall of the clamping cam 13, there is a long strip-shaped clamping rib 132 protruding towards the hinge end of the clamping cam 13. The clamping rib 132 is specifically divided into two sections and located on both sides of the hinge end of the clamping cam 13. One clamping rib 132 extends to one edge of the free end of the clamping cam 13, and the other clamping rib 132 extends to the other edge of the free end of the clamping cam 13. Figure 6 As shown, the two hinge parts 14 have an L-shaped limiting groove 141 vertically opened at their opposite ends. When the clamping cam 13 locks the insert plate 21 by engaging with the toothed groove 211 on the insert plate 21 through the gear tooth 131, the clamping rib 132 can press against the groove wall of the limiting groove 141. In addition, the corners of the opposite ends of the two hinge parts 14 are chamfered into arc shape, thereby avoiding rapid wear between the clamping cam 13 and the hinge part 14 due to severe sliding friction when rotating. Furthermore, an inclined surface 133 is provided at the corner of the free end face of the clamping cam 13. The inclined surface 133 extends to the upper and lower edges of the free end of the clamping cam 13. When the insert plate 21 is locked by the clamping cam 13, there is a certain gap between the free end of the clamping cam 13 and the back of the frame 1 due to the presence of the limiting groove 141. Due to the presence of the inclined surface 133, the gap between the free end of the clamping cam 13 and the back of the frame 1 can be further increased, thereby facilitating user operation.

[0037] like Figure 5 and Figure 7As shown, a downwardly protruding positioning ridge 111 is formed on the upper inner wall of the insertion port 11. The positioning ridge 111 is arranged along the thickness direction of the frame 1. At the same time, several slots 212 are formed on the upper side wall of the insertion plate 21. The slots 212 are spaced apart along the length direction of the insertion plate 21. Each slot 212 is formed along the thickness direction of the insertion plate 21 and extends through both sides of the insertion plate 21. The positioning ridge 111 is embedded in any one of the slots 212. When the pressing cam 13 does not lock the insertion plate 21, the positioning ridge 111 can be pre-positioned by engaging with any one of the slots 212. At the same time, the engagement of the slots 212 and the positioning ridge 111 allows the insertion plate 21 to be pulled outward. When pulling or pushing inward, the device provides clear feedback to the user to ensure precise control of the adjustment of the two temples 2. It is worth mentioning that, in order to avoid irreversible wear between the positioning protrusion 111 and the upper side wall of the insert plate 21 due to long-term interference, a buffer layer made of elastic material (such as rubber or silicone) can be vulcanized on the outer surface of the positioning protrusion 111 or on the upper surface of the insert plate 21 to avoid rapid wear of the positioning protrusion 111. Alternatively, the positioning protrusion 111 can be formed on the lower side of the insert 11, and several slots 212 can be opened on the lower side of the insert plate 21. Or, the positioning protrusion 111 can be formed on both the upper and lower side walls of the insert 11, and slots 212 can be opened on both the upper and lower side walls of the insert plate 21.

[0038] like Figure 4 , Figure 6 as well as Figure 7 As shown, a locking hole 15 is provided on the back of the frame 1 and on the inner side of the two hinge parts 14 along the thickness direction. The locking hole 15 is provided through the side walls of the insertion port 11. A thread is formed on the circumferential hole wall at the inner end of the locking hole 15, and the outer end of the locking hole 15 is stepped. A strip hole 214 is provided on the insertion plate 21. The strip hole 214 is arranged along the length direction of the insertion plate 21. A screw 151 is provided in the locking hole 15. One end of the screw 151 passes through the strip hole 214 and is screwed to the inner end of the locking hole 15. The other end of the screw 151 is embedded in the locking hole 15 and abuts against the stepped surface of the locking hole 15.

[0039] Operating principle: After the user tries on the glasses, they pry the two clamping cams 13 outwards, causing the hinged ends of each clamping cam 13 to disengage from the positioning holes 12. At this time, the two insert plates 21 are unlocked. The user then holds the glasses at the front end of the temple 2 and can press the insert plates 21 inwards or pull them outwards as needed. During this process, the positioning protrusion 111 and each slot 212 engage to allow the operator to know the length of the insert plate 21 inserted into the slot 11 and to ensure that the two insert plates 21 are inserted to the same depth. Simultaneously, the engagement of the positioning protrusion 111 and the slot 212 ensures... The initial positioning of the two temples 2 allows the user to maintain the current distance between the two temples 2 during the adjustment period and try wearing the glasses. After the adjustment is completed, the user can reverse the two clamping cams 13 so that the hinge ends of the two clamping cams 13 are inserted into the corresponding positioning holes 12. This allows the gear teeth 131 of the hinge ends of the clamping cams 13 to engage with the tooth grooves 211 on the insert plate 21, while the outer wall of the hinge ends of the clamping cams 13 and the side wall of the insert plate 21 are pressed together, thereby locking the insert plate 21. This completes the adjustment of the distance between the two temples 2.

[0040] In addition, based on the structure of this eyeglass, the insert plate 21 can be quickly replaced. Specifically, after prying the two clamping cams 13 outward, the screws 151 locked in the locking holes 15 are unscrewed with a screwdriver. Then, the insert plate 21 is pulled outward to separate the insert plate 21 from the socket 11. The screws used to connect the front end of the temple 2 and the hinge plate 213 are unscrewed. Then, the new insert plate 21 is assembled in reverse order according to the above steps to ensure the service life of the eyeglasses.

[0041] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0042] Although this document frequently uses terms such as frame 1, insert 11, positioning protrusion 111, positioning hole 12, clamping cam 13, gear tooth 131, clamping rib 132, inclined surface 133, hinge part 14, limiting groove 141, locking hole 15, screw 151, temple 2, insert plate 21, tooth groove 211, slot 212, hinge plate 213, and strip hole 214, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A temple spacing adjustment structure for eyeglasses, the eyeglasses comprising a frame (1) and two temples (2), characterized in that, The temple spacing adjustment structure includes slots (11) at both ends of the frame (1), insert plates (21) hinged to the front end of the temple (2), and two abutting cams (13) hinged to the back of the frame (1). Each slot (11) is opened along the length of the frame (1). The insert plates (21) are long and horizontal. The two insert plates (21) are inserted into the two slots (11) and can slide along the length of the frame (1). Positioning holes (12) are opened on the back of the frame (1) near both ends. The two positioning holes (12) are arranged through the side wall of the corresponding slots (11). The two abutting cams (13) are embedded in the two positioning holes (12) and abut against the side of the corresponding insert plates (21).

2. The temple spacing adjustment structure for eyeglasses according to claim 1, characterized in that, The outer wall of the clamping cam (13) has a plurality of teeth (131), which are arranged at intervals along the circumference of the clamping cam (13). The side wall of the insert plate (21) facing the clamping cam (13) has a plurality of tooth grooves (211), which are arranged at intervals along the length of the insert plate (21). When the clamping cam (13) rotates around the hinge and is inserted into the positioning hole (12), the teeth (131) are embedded and positioned in the tooth grooves (211).

3. The temple spacing adjustment structure for eyeglasses according to claim 2, characterized in that, The mirror frame (1) has U-shaped hinges (14) at both ends of its back side, and the two hinges (14) are arranged opposite to each other. The positioning hole (12) is located inside the hinge (14), and the clamping cam (13) is hinged to the upper and lower side walls of the hinge (14) through a rotating shaft.

4. The temple spacing adjustment structure for eyeglasses according to claim 3, characterized in that, The two hinged parts (14) have an L-shaped limiting groove (141) at one end opposite to each other. The clamping cam (13) is T-shaped. A number of gear teeth (131) are formed on the outer wall of the hinged end of the clamping cam (13), and the free end of the clamping cam (13) abuts against the groove wall of the limiting groove (141).

5. The temple spacing adjustment structure for eyeglasses according to claim 4, characterized in that, The free end of the clamping cam (13) has an outwardly protruding clamping rib (132) in the vertical direction. The clamping rib (132) has at least two sections and is located on both sides of the hinge end of the clamping cam (13). The free end of the clamping cam (13) is clamped by the clamping rib (132) and the groove wall of the limiting groove (141).

6. The temple spacing adjustment structure for eyeglasses according to any one of claims 3-5, characterized in that, The corners of the two hinged parts (14) at opposite ends are chamfered into an arc shape.

7. The temple spacing adjustment structure for eyeglasses according to claim 4 or 5, characterized in that, Each of the clamping cams (13) has an inclined surface (133) at the corner of the end face of its free end, and the inclined surface (133) extends to the two sides of the free end edge of the clamping cam (13).

8. The temple spacing adjustment structure for eyeglasses according to any one of claims 3-5, characterized in that, Each of the insert plates (21) has a plurality of slots (212) on its sidewall. The slots (212) are spaced apart along the length of the insert plate (21). Each of the sockets (11) has a positioning protrusion (111) on its inner sidewall. The positioning protrusion (111) is embedded and positioned in any one of the slots (212).

9. The temple spacing adjustment structure for eyeglasses according to claim 8, characterized in that, Each of the insert plates (21) has a hinge plate (213) on one end of its sidewall. The front end of the temple (2) is hinged to the hinge plate (213). Each of the insert plates (21) also has a strip hole (214) on the sidewall of the hinge plate (213). The strip hole (214) is opened along the length of the insert plate (21) and passes through the other sidewall of the insert plate (21). Locking holes (15) are also opened at both ends of the frame (1) and inside the two hinge parts (14). Screws (151) are screwed into the locking holes (15) and the screws (151) pass through the strip hole (214).

10. The temple spacing adjustment structure for eyeglasses according to claim 9, characterized in that, The locking hole (15) is a stepped hole. One end of the screw (151) passes through the strip hole (214) and is screwed to the inner end of the locking hole (15). The outer end of the screw (151) is embedded in the locking hole (15) and abuts against the stepped surface of the locking hole (15).

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