Telescopic eyeglass temple and try-on eyeglass frame
By incorporating positioning and limiting recesses within the sliding channel of the temples in the trial-fit eyeglass frames, along with a rolling element, the problems of fixed temple length and difficulty in insertion and removal are solved. This enables smooth multi-position adjustment of the temples and prevents them from falling out, thereby improving the user experience and product durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SANTEMORE TECH CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-31
AI Technical Summary
The current trial eyeglass frames have fixed temple lengths, resulting in poor wearing comfort for different people, and the existing rack and pinion structure causes problems with easy insertion and removal.
The design employs a combination of positioning and limiting recesses within the sliding channel and rolling elements to achieve smooth, multi-position adjustment of the temples, with additional limiting rolling elements at extreme positions to prevent them from slipping out.
It achieves smooth temple adjustment and precise positioning, enhances product durability and safety, and improves user experience.
Smart Images
Figure CN224581774U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of eyeglass frame technology, and in particular to a telescopic temple and a trial eyeglass frame. Background Technology
[0002] When nearsighted individuals go to the hospital for a vision test, the doctor will provide them with a trial frame of glasses to try on. The trial frame ensures that the patient or client can comfortably try on different styles, sizes, and types of medical glasses.
[0003] However, the temple length of existing trial eyeglass frames is generally fixed, with only one fixed length. During the wearing process, due to the different head sizes of different people, a trial eyeglass frame of a certain model can only meet the needs of a portion of the population and cannot guarantee the maximum comfort for everyone.
[0004] The prior art describes a trial eyeglass frame, which includes temples composed of a first temple bar and a second temple bar. A rack is provided at the connection between the first temple bar and the second temple bar. The first temple bar and the second temple bar slide relative to each other through the rack. The rack is used to achieve relative sliding between the first temple bar and the second temple bar. However, due to either excessive tightness or excessive looseness in the meshing between the racks, insertion and removal become difficult. Utility Model Content
[0005] In view of this, one of the objectives of this utility model is to provide a telescopic temple to solve the technical problem in the prior art where the first temple rod and the second temple rod are difficult to insert and remove during the sliding process between them.
[0006] The second objective of this utility model is to provide a trial eyeglass frame with telescopic temples.
[0007] To achieve one of the above objectives, this utility model provides a telescopic temple, including a first temple rod, a second temple rod, and a rolling element. The first temple rod has a sliding channel along its length, and a plurality of positioning recesses are spaced apart in the sliding channel. The end of the second temple rod has a strip-shaped hole along its length, and the inner wall of the strip-shaped hole has a limiting recess with the same number as the positioning recesses. The rolling element is disposed in the space formed by the positioning recesses and the limiting recesses. When the end of the second temple rod slides in the sliding channel, the rolling element switches between different spaces formed by the positioning recesses and the limiting recesses.
[0008] Optionally, the first temple rod includes a rod body and a cover. The rod body has an L-shaped structure and includes a connecting part and a lug part. The cover is disposed on the connecting part, and the sliding channel is located between the cover and the connecting part.
[0009] Optionally, the sliding channel includes a first groove and a second groove, the first groove being recessed inward from the side wall of the connecting portion, and the second groove being recessed inward from the side wall of the cover.
[0010] Optionally, the second groove body is further provided with a rolling element sliding groove, and the positioning recess is located at the bottom of the rolling element sliding groove.
[0011] Optionally, the two side walls of the rolling element sliding groove are provided with arc-shaped recesses that are adapted to the positioning recesses.
[0012] Optionally, a counterweight is provided inside the lug portion.
[0013] Optionally, the end of the second temple rod is an adjusting rod, the thickness and width of which are smaller than the main body of the second temple rod. The adjusting rod is slidably disposed in the sliding channel. The strip hole is located on the adjusting rod, and arc-shaped recesses adapted to the positioning recesses are provided on the inner walls of both sides of the strip hole.
[0014] Optionally, the rolling element includes at least one, and the rolling element includes at least one limiting rolling element, the limiting rolling element having a rolling surface and a limiting plane;
[0015] When the second temple rod is not stretched to its limit position, the limiting rolling element, together with the other rolling elements, achieves the positioning function by cooperating with the positioning recess through its rolling surface;
[0016] When the second temple bar is stretched to its limit position, the limiting rolling element moves to the positioning recess located at the limit position of the first temple bar, and its limiting plane abuts against the edge of the positioning recess located at the limit position to prevent the second temple bar from coming off the first temple bar.
[0017] Optionally, the limiting rolling element is a hemispherical ball, the rolling surface is the spherical surface of the hemispherical ball, and the limiting plane is the plane of the hemispherical ball.
[0018] To achieve the second objective mentioned above, this utility model provides a trial eyeglass frame, including any of the telescopic temples described above.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] (1) Smooth adjustment and better feel. This utility model achieves segmented positioning by the rolling body switching between the positioning recess and the limiting recess, which replaces the rigid meshing structure of the rack and pinion in the prior art. This avoids friction and jamming during the adjustment process, making the extension and retraction adjustment of the temple extremely smooth and fluid, with a clear positioning feel, and significantly improving the user experience.
[0021] (2) Reliable structure and accurate positioning. The rolling element is housed in the space formed by the positioning recess of the first temple and the limiting recess of the second temple, forming a stable constraint. This ensures that the positioning at each position is very reliable and that accidental slippage is not likely to occur, thus guaranteeing stability during the fitting process.
[0022] (3) Enhanced design to prevent detachment. In the preferred embodiment, by using a special limiting rolling element with a rolling surface and a limiting plane, the limiting plane can form a physical barrier when the temple is stretched to the limit position, effectively preventing the second temple rod from accidentally detaching from the first temple rod, thus improving the durability and safety of the product. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the telescopic temple of this utility model;
[0025] Figure 2 yes Figure 1 Front view of the telescopic temple;
[0026] Figure 3 yes Figure 1 A cross-sectional view of the telescopic temple;
[0027] Figure 4 yes Figure 1 Schematic diagram of the internal structure of the telescopic temple (initial state);
[0028] Figure 5 yes Figure 1 A schematic diagram of the cover of the telescopic temple;
[0029] Figure 6 yes Figure 1 A schematic diagram of the structure of the rod body of the telescopic temple;
[0030] Figure 7 yes Figure 1 Another internal structure diagram of the telescopic temple (extreme state).
[0031] in, Figures 1-7 :
[0032] 10-Telescopic temple; 11-First temple rod; 111-Rod body; 112-Cap; 1121-Rolling element sliding groove; 1122-Arc-shaped recess; 113-Sliding channel; 114-Positioning recess; 12-Second temple rod; 121-Adjusting rod; 122-Strip hole; 123-Limiting recess; 13-Rolling element; 13a-Limiting rolling element; 131-Rolling curved surface; 132-Limiting plane. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0034] To address the problems of adjustment sticking and poor feel in existing telescopic temples using rack and pinion mechanisms, a preferred embodiment of this invention provides a telescopic temple 10. This telescopic temple 10, through its unique internal structure, aims to achieve smooth and reliable multi-position length adjustment.
[0035] Please see Figure 1-7 The diagram shown is an exploded view of the telescopic temple 10 in a preferred embodiment of this utility model. Figure 1 As shown, the telescopic temple 10 includes a first temple rod 11, a second temple rod 12, and at least one rolling element 13.
[0036] As a preferred implementation, to facilitate processing and manufacturing and the formation of the internal structure, the first temple rod 11 adopts a split design, specifically including a rod body 111 and a cover 112. The rod body 111 and the cover 112 can be made of high-molecular materials with good strength, toughness, and chemical resistance, such as polycarbonate or TR90, using injection molding. The two are firmly combined by means of snap-fit, ultrasonic welding, or bonding to form the complete outer shell of the first temple rod 11.
[0037] To maintain balance, the rod body 111 may also have a counterweight.
[0038] See Figure 2 and Figure 3 ,in Figure 3This is a cross-sectional view of the internal structure of the first temple rod 11. After the rod body 111 and the cover 112 are combined, they together form a sliding channel 113 extending along the length of the first temple rod 11. The cross-sectional shape of the sliding channel 113 can be rectangular, circular, or other shapes suitable for guiding the sliding of the second temple rod 12. Its dimensions are precisely designed to ensure that the second temple rod 12 can slide smoothly within it while maintaining a small wobble gap.
[0039] A key technical feature of this embodiment is that a positioning structure is provided on the inner wall of the sliding channel 113.
[0040] Specifically, on one inner wall of the sliding channel 113 (e.g., the inner wall formed by the cover 112), a plurality of positioning recesses 114 are recessed at a predetermined interval along its length direction to achieve segmented positioning. In this embodiment, four recesses are preferred.
[0041] Each of the positioning recesses 114 is preferably hemispherical or arc-shaped with a smooth surface to facilitate the rolling in and out of the rolling element 13. The distance between these positioning recesses 114 determines the step size of the temple length adjustment, which can be set to, for example, 3 mm, 4 mm, or 5 mm to provide ergonomic adjustment precision.
[0042] As an optional implementation, to further improve the stability and smoothness of the rolling element 13 moving within the sliding channel 113, a through rolling element sliding groove 1121 can be formed on the cover 112. The width of the groove is slightly smaller than the diameter of the rolling element 13, and the depth is also smaller than the diameter of the rolling element 13, and the aforementioned positioning recess 114 is provided at the bottom of the rolling element sliding groove.
[0043] In addition, arc-shaped recesses 1122 are provided on both sides of the rolling element sliding groove 1121 to guide and constrain the lateral movement of the rolling element 13, preventing it from deviating or getting stuck during rolling, thereby ensuring a more stable and linear adjustment process.
[0044] Please see Figure 4 The figure shows a schematic diagram of the structure at the end of the second temple rod 12. The second temple rod 12 is an extendable part of the telescopic temple 10, and at least one end of it is adapted to be inserted into the sliding channel 113 of the first temple rod 11. It is preferably made of titanium. To achieve positioning and engagement with the first temple rod 11, the insertion end of the second temple rod 12 is an adjusting rod 121.
[0045] Specifically, a strip-shaped hole 122 is provided on the rod at the insertion end along its length, the length of which covers the entire adjustment stroke, and the width is used to accommodate the rolling element 13.
[0046] Multiple limiting recesses 123 are provided on the inner wall of the strip-shaped hole 122. It should be noted that the position, number, and spacing of these limiting recesses 123 precisely correspond to the positioning recesses 114 on the first temple rod 11. That is, when the second temple rod 12 slides within the sliding channel 113, there will always be a position where a certain limiting recess 123 is spatially aligned with a certain positioning recess 114. Correspondingly, the shape of the limiting recesses 123 also matches that of the positioning recesses 114, for example, both are hemispherical.
[0047] The rolling element 13 is the key medium for achieving smooth adjustment and reliable positioning.
[0048] In this embodiment, the rolling element 13 may be one or more, for example, a standard spherical rolling element made of a high-hardness, high-wear-resistant material (such as steel or ceramic). These rolling elements 13 are housed within the slot 122 of the second temple rod 12.
[0049] The following will combine Figure 4 and Figure 7 The working principle of this implementation method is explained.
[0050] Figure 4 and Figure 7 This is a schematic diagram of the telescopic temple 10 in different positioning states. In the initial state, the end of the second temple rod 12 is inserted into the sliding channel 113 of the first temple rod 11, and the rolling element 13 is accommodated in the strip hole 122.
[0051] When the telescopic temple 10 is at any stable length position, at least one rolling element 13 will simultaneously fall into the space formed by a positioning recess 114 and a corresponding limiting recess 123. At this time, the walls of the positioning recess 114 and the limiting recess 123 together form a stable three-dimensional spatial constraint on the rolling element 13, thereby effectively preventing the second temple rod 12 from sliding axially relative to the first temple rod 11, achieving a firm and reliable positioning.
[0052] When the user applies axial force to adjust the temple length, this force is transmitted to the rolling element 13, generating a component force that compels it to roll along the arcuate inner walls of the positioning recess 114 and the limiting recess 123. Once this force is sufficient to overcome static friction and geometric constraints, the rolling element 13 disengages from the current recessed space and enters the main channel of the sliding channel 113. As the second temple rod 12 continues to move, the rolling element 13 moves freely within the sliding channel 113 using rolling friction, a process that is extremely smooth. When the rolling element 13 rolls to the next aligned position of the positioning recess 114 and the limiting recess 123, it automatically falls into this new combined space. The falling of the rolling element can be accompanied by audible or tactile feedback, clearly indicating to the user that the next setting has been switched. The entire adjustment process is essentially a process of the rolling element 13 "jumping" between a series of recessed combined spaces, thus avoiding the sticking sensation caused by rigid friction in traditional rack and pinion structures and significantly improving the smoothness of adjustment.
[0053] As a preferred embodiment, this embodiment provides an improved telescopic temple 10 with an anti-dislodgement function, based on the above embodiments. To prevent the user from pulling the second temple rod 12 completely out of the first temple rod 11 due to excessive force, this embodiment introduces a specially designed rolling element and a corresponding limiting structure.
[0054] Please see Figure 5 and Figure 7 This is a schematic diagram of the structure of a limiting rolling element 13a used in this embodiment. Unlike the spherical rolling element 13 in the above embodiments, the limiting rolling element 13a in this embodiment has a special shape.
[0055] Specifically, it has a rolling surface 131 for normal rolling and positioning, and a limiting plane 132 for forming a physical barrier at extreme positions. For example, the limiting rolling element 13a can be a hemispherical ball, with its spherical portion serving as the rolling surface 131 and its flat bottom surface serving as the limiting plane 132.
[0056] In the telescopic temple 10 of this embodiment, at least one of the plurality of rolling elements is replaced by this type of limiting rolling element 13a, and the limiting rolling element 13a is usually placed at the end of the second temple rod 12 closest to the main body of the second temple rod in the slot 122.
[0057] Accordingly, the structure of the first temple rod 11 is also adapted. Specifically, at the very end of the sliding channel 113, in the area where the second temple rod 12 is stretched to its limit position, the edge of its last positioning recess 114 is designed to have a blocking structure that can effectively abut against the limiting plane 132 of the limiting rolling element 13a, such as a right-angle step or stop that is close to 90 degrees.
[0058] Its working process is as follows: Within the normal adjustment range, the function of the limiting rolling element 13a is the same as that of the ordinary spherical rolling element 13. It uses the rolling surface 131 to cooperate with the arc surfaces of the positioning recess 114 and the limiting recess 123 to smoothly roll and position between different gears.
[0059] However, when the second temple rod 12 is continuously stretched outward to its limit position, the limiting rolling element 13a will move to the limit positioning recess at the very end of the sliding channel 113 of the first temple rod 11. At this time, the continued applied tension will cause the limiting rolling element 13a to flip or tilt, and its limiting plane 132 will rotate to face the blocking structure at the end of the first temple rod 11. Figure 7 As shown, the limiting plane 132 of the limiting rolling element 13a forms a rigid abutment with the blocking edge, constituting a strong physical barrier, thereby reliably preventing the second temple rod 12 from accidentally dislodging from the first temple rod 11.
[0060] Understandably, this anti-detachment design has a simple structure, which effectively enhances the product's durability and safety while increasing manufacturing costs by almost nothing.
[0061] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0062] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0063] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A telescoping temple characterized by, The device includes a first temple rod, a second temple rod, and a rolling element. The first temple rod has a sliding channel along its length, and multiple positioning recesses are spaced apart within the sliding channel. The end of the second temple rod has a strip-shaped hole along its length, and the inner wall of the strip-shaped hole has limiting recesses of the same number as the positioning recesses. The rolling element is disposed within the space formed by the positioning recesses and the limiting recesses. When the end of the second temple rod slides within the sliding channel, the rolling element switches between different spaces formed by the positioning recesses and the limiting recesses.
2. The retractable earflap according to claim 1, characterized in that The first temple rod includes a rod body and a cover. The rod body has an L-shaped structure and includes a connecting part and a lug part. The cover is disposed on the connecting part, and the sliding channel is located between the cover and the connecting part.
3. The retractable earflap according to claim 2, characterized in that The sliding channel includes a first groove and a second groove, the first groove being recessed inward from the side wall of the connecting part, and the second groove being recessed inward from the side wall of the cover.
4. The retractable earflap according to claim 3, characterized in that The second groove is also provided with a rolling element sliding groove, and the positioning recess is located at the bottom of the rolling element sliding groove.
5. The retractable earflap according to claim 4, characterized in that The two side walls of the rolling element sliding groove are provided with arc-shaped recesses that are adapted to the positioning recesses.
6. The retractable earflap according to claim 2, wherein The lug portion is equipped with a counterweight.
7. The retractable earflap according to claim 2, wherein The end of the second temple rod is an adjustment rod. The thickness and width of the adjustment rod are smaller than the main body of the second temple rod. The adjustment rod is slidably disposed in the sliding channel. The strip hole is located on the adjustment rod, and arc-shaped recesses that are adapted to the positioning recesses are provided on the inner walls of both sides of the strip hole.
8. The telescopic temple according to claim 3, characterized in that, The rolling element includes at least one, and the rolling element includes at least one limiting rolling element, the limiting rolling element having a rolling surface and a limiting plane; When the second temple rod is not stretched to its limit position, the limiting rolling element, together with the other rolling elements, achieves the positioning function by cooperating with the positioning recess through its rolling surface; When the second temple bar is stretched to its limit position, the limiting rolling element moves to the positioning recess located at the limit position of the first temple bar, and its limiting plane abuts against the edge of the positioning recess located at the limit position to prevent the second temple bar from coming off the first temple bar.
9. The telescopic temple according to claim 8, characterized in that, The limiting rolling element is a hemispherical ball, the rolling surface is the spherical surface of the hemispherical ball, and the limiting plane is the plane of the hemispherical ball.
10. An eyeglass frame fitting system, characterized by, Includes the telescopic temples as described in any one of claims 1-9.