An eyeglasses temple assembly

Abstract

This invention provides an eyeglass temple assembly, belonging to the field of mechanical technology. It solves the technical problem of low stability in existing eyeglass temple hinge assemblies. The invention includes a first connecting rod and a second connecting rod, each having an elastic core. The outer ends of the two elastic cores are interlocked, causing the second connecting rod to abut against the first connecting rod. A protrusion is provided on the end face of the second connecting rod. When the second connecting rod rotates relative to the first connecting rod to a perpendicular position, the protrusion engages with the end side of the first connecting rod. Even with the interlocking connection, this invention allows for stable and smooth rotation of the first connecting rod and the second connecting rod, demonstrating good stability.

Description

Technical Field

[0001] This invention belongs to the field of mechanics and relates to a hinge assembly for the temple of eyeglasses, particularly a hinge assembly with multiple free rotation. Background Technology

[0002] A pair of glasses consists of a lens frame and two temples. The temples are attached to the lens frame and can fold relative to it. To ensure comfort and prevent breakage, the temples are designed to be flexible. There are two main ways to achieve this: one is to hinge the temples directly to the lens frame using screws or rivets, but the temples themselves are made of a flexible material, maximizing movement and increasing comfort; the second is to use a hinge assembly between the temples and the lens frame, allowing for 360-degree rotation through the hinge connection and flexible structure, further enhancing comfort.

[0003] In the prior art, such as the eyeglass temple with 360-degree rotation disclosed in Chinese Patent No. 201510904094.X, a hinge assembly is formed by a temple body, a headstock, and a connecting body disposed between the temple body and the headstock. This is the hinge assembly described in this invention. It has an elastic core inside the headstock, as in that patent. Figure 4 The structure is a conventional elastic core, consisting of a positioning cylinder, a positioning rod with a positioning disc, and a second spring. The positioning cylinder is fixed inside the headstock, and the second spring acts on the positioning disc and the positioning cylinder, causing the positioning rod to retract inwards towards the headstock. The outer end of the elastic core is hinged to the connecting body. Thus, the connecting body rests against the headstock under the action of the second spring. Because it is a hinged connection, the hinge axis is horizontal, allowing the connecting body to swing up and down relative to the headstock. Furthermore, the foot body is hinged to the connecting body, with the hinge axis vertical, allowing the foot body to swing left and right relative to the connecting body, thus enabling 360-degree rotation. Inside the foot body, there is also a positioning structure consisting of a first spring and a top post. Under the action of the elastic force, the top post presses against the connecting body to prevent the foot body from rotating freely.

[0004] This hinge assembly can be modified in some ways. For example, instead of using an elastic core structure in the temple, a positioning structure consisting of a spring and a top post can be used. That is, the foot is hinged to the connecting body and the positioning structure is used for rotation angle positioning. The temple uses the connecting body for hinge and the positioning structure is used for rotation angle positioning, such as the elastic eyeglass temple disclosed in Chinese Patent 200620048782.7.

[0005] In addition to the aforementioned deformed structures, another type of deformation may occur, namely, keeping the head and elastic core unchanged, but changing the positioning structure to an elastic core. That is, the foot body is connected to the connector through the elastic core, and the head is also connected to the connector through the elastic core.

[0006] All of the above structures can achieve 360-degree rotation of the hinge assembly. However, the stability of this type of hinge assembly needs further improvement. The main reason is that the structure of the connecting body is relatively complex, and the manufacturing and assembly processes require high precision. Moreover, during the 360-degree rotation, it is achieved through the two hinge structures of the connecting body. If one of the hinge axes malfunctions, the hinge assembly will malfunction. Furthermore, after rotation, the positioning relies on the elastic core directly pressing against a head or foot to achieve limitation, which is prone to positioning instability. Summary of the Invention

[0007] In view of the above-mentioned problems existing in the prior art, the present invention provides an eyeglass temple assembly. The technical problem to be solved by the present invention is: how to improve the stability of the eyeglass temple assembly.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] An eyeglass temple assembly includes a first connecting rod and a second connecting rod, each having an elastic core. The outer ends of the two elastic cores are interlocked so that the second connecting rod abuts against the first connecting rod. The second connecting rod is characterized by having a protrusion on its end face. When the second connecting rod rotates relative to the first connecting rod to a position perpendicular to each other, the protrusion engages with the end side of the first connecting rod.

[0010] This invention employs a direct snap-fit ​​connection with two elastic cores. The springs within the elastic cores act on the first connecting rod and the second connecting member, causing the ends of the first connecting rod and the end faces of the second connecting member to press against each other. When the temples are in the unfolded state, the first connecting rod and the second connecting member are on the same straight axis. Because the two elastic cores are directly snapped together, the second connecting member can rotate relative to the first connecting rod in any direction during elastic deformation. When the second connecting member rotates 90° and is perpendicular to the first connecting rod, the temples are in the folded state. In this state, the elastic force of the elastic cores presses the second connecting rod against the side of the end of the first connecting member. Furthermore, a protrusion engages with the side of the end, restricting the protrusion and preventing the second connecting rod from moving up and down. This ensures high stability when the second connecting member and the first connecting rod are in a perpendicular position.

[0011] Building upon the increased freedom of the double-elastic core fastening mechanism, a locking structure for enhanced stability is designed between the first and second connecting rods. This locking structure is independent of the elastic core, allowing for greater freedom of separation between the first and second connecting rods. Furthermore, when the second connecting rod is rotated to engage with the first connecting rod, it is easier for the protrusion to engage with the end side of the first connecting rod. The fastening mechanism described in this paper refers to the direct interlocking or hooking of two ring-shaped or similar ring-shaped components, a pivotal connection that significantly increases the degree of freedom.

[0012] In the aforementioned temple assembly, the end side of the first connecting rod has parallel baffles, and the protrusion is engaged between the two baffles. The symmetrical sides of the protrusion are confined by the baffles, increasing the stability of the second and first connecting rods.

[0013] In the aforementioned temple assembly, the width of the protrusion is slightly smaller than the distance between the two retaining walls. This facilitates the protrusion engaging with the retaining walls during folding.

[0014] In the aforementioned temple assembly, the edges of the two retaining walls are flat, and the end face of the second connecting rod is also flat, with the end face of the second connecting rod abutting against the edges. After the second connecting rod is bent, under the action of the elastic core, the end face of the connecting rod abuts against the edges. Since both are flat, this reduces the resistance when translating through the dead point. Simultaneously, the abutting of the two flat surfaces prevents the second connecting rod from rebounding back to the unfolded state, maintaining stability in the folded state.

[0015] In the aforementioned temple assembly, a blocking portion is provided between the end side of the first connecting rod and the end face of the second connecting rod to prevent the second connecting rod from detaching from the baffle. This blocking portion prevents the second connecting rod from moving and detaching.

[0016] In the aforementioned temple assembly, the blocking part is a limiting surface disposed between two blocking walls, and the protrusion can abut against the limiting surface; or the blocking part is a blocking block disposed on the protrusion, and the blocking block can abut against the end of the blocking wall. These two structures are equivalent replacement structures with interchangeable positions, and both can achieve the anti-slip effect. Under the action of the elastic core, the protrusion can translate past the dead point within the space between the blocking walls and abut against the limiting surface, thus confining the positioning block between the limiting surface and the two groove walls, forming a stable state and increasing stability.

[0017] In the aforementioned temple assembly, the end of the first connecting rod is hollow. An elastic core, including a strip-shaped slide rod, is provided on the inner wall of the end of the first connecting rod. A strip-shaped guide hole is formed in the axial direction of the slide rod, and a strip-shaped spring is provided within the guide hole, acting between the inner end of the slide rod and the first connecting rod to cause the slide rod to contract inward. The slide rod is disposed within a groove. By placing the spring within the slide rod, and the slide rod within the groove, the spring is limited on its outer circumference, preventing bending deformation and loss of elasticity, thus improving stability.

[0018] In the aforementioned temple assembly, a pin is fixed to the first connecting rod. The pin extends into the guide hole of the slide rod, and one end of the spring acts on the pin. In addition to guiding the elastic core through the slide groove, the elastic core is also guided by a pin and guide hole, ensuring that the elastic core is guided both inside and outside, thus guaranteeing stability.

[0019] In the aforementioned temple assembly, the end face of the first connecting rod is adjacent to and perpendicular to the stop wall, and the starting end of the stop wall is flush with the end of the first connecting rod. This structure allows the protrusion to easily engage with the side of the end of the first connecting rod.

[0020] In the aforementioned temple assembly, a clearance channel is provided at the bottom between the barriers to allow the elastic core to move.

[0021] In the aforementioned temple assembly, the interlocking points of the elastic cores are located within the cavities at the ends. This protects the interlocking points, preventing dust and impurities from entering and improving stability.

[0022] In the aforementioned temple assembly, the elastic core disposed within the second connecting rod includes a sliding pin with a shoulder at its inner end, a hook at the outer end of the sliding pin, a bushing fixed inside the second connecting rod, the sliding pin passing through the bushing and having a spring on the outer sleeve, one end acting on the shoulder and the other end acting on the bushing, and the hook extending out of the second connecting rod and engaging with the sliding rod.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. The present invention connects two elastic cores by interlocking with each other, which greatly increases the degree of freedom of connection and simplifies the assembly difficulty.

[0025] 2. The present invention utilizes a sliding groove and a sliding rod, as well as a pin and a sliding rod, on the end side of the first connecting rod. With these three connections, the first connecting rod and the second connecting piece can rotate stably and smoothly even when connected by a snap-fit ​​method. Furthermore, the protrusion on the second connecting rod engages with the end side of the first connecting rod, enabling the present invention to maintain good stability even with greater degrees of freedom. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1.

[0027] Figure 2 This is a schematic diagram showing the interlocking state of two elastic cores.

[0028] Figure 3 yes Figure 1 The top view in the image.

[0029] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure of AA.

[0030] Figure 5 This is a schematic diagram of the end face structure of the second connector and the elastic core in Embodiment 1.

[0031] Figure 6 This is a schematic diagram of the end face structure of the first connecting rod and the elastic core in Embodiment 1.

[0032] Figure 7 yes Figure 1 The front view in the image.

[0033] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure of BB.

[0034] Figure 9 yes Figure 3 A schematic diagram of the structure after the second connecting member has rotated a certain angle in the current state.

[0035] Figure 10 yes Figure 9 A cross-sectional view of the temple assembly in its folded state when rotated to the folded position.

[0036] Figure 11 This is a schematic diagram of the second type of guide structure in Embodiment 2.

[0037] Figure 12 yes Figure 11 A cross-sectional view of the CC core without its elastic core.

[0038] Figure 13 This is a schematic diagram of the alternative anti-detachment structure in Example 1.

[0039] Figure 14 This is a schematic diagram of the alternative structure to the anti-detachment structure in Example 2.

[0040] In the figure, 1. First connecting rod; 11. End; 12. End face; 13. Edge; 14. Limiting surface; 15. Clearance channel; 16. Slide groove; 2. Second connecting rod; 21. End face; 23. Guide through hole; 17. Fusel point; 3. Elastic core; 31. Sliding pin; 312. Shoulder; 32. Hook ring; 321. Body; 322. Elastic fastening piece; 33. Bushing; 331. Annular groove; 34. Spring; 35. Sliding rod; 351. Guide hole; 36. Bar spring; 37. Ring buckle; 4. Pin; 5. Pin; 61. First concave-convex structure; 62. Second concave-convex structure; 7. Protrusion; 8. Baffle; 9. Blocking block. Detailed Implementation

[0041] 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.

[0042] Example 1:

[0043] like Figure 1 The illustrated temple assembly connects the eyeglass frame and the temples. In this embodiment, the first connecting rod 1 connects to the frame and is approximately perpendicular to it after being fixed to the frame. The second connecting rod 2 connects to the temples and is coaxial with them after being connected to the temples. Figure 1 The temple assembly is in the unfolded state, so that the temples, after passing through the temple assembly, can be in a roughly perpendicular state with the frame, and are in an unfolded and wearable state. The first connecting rod 1 and the second connecting rod 2 are movable and can be folded into a roughly right angle state. After the second connecting rod 2 is folded relative to the first connecting rod 1, the temples connected to the second connecting rod 2 are in a folded and stowed state.

[0044] like Figure 2 As shown, both the first connecting rod 1 and the second connecting rod 2 are provided with inwardly contracting elastic cores 3. The elastic core 3 provided in the second connecting rod 2 includes a sliding pin 31 with a shoulder 312 at its inner end. The shoulder 312 is formed by the enlarged part at the bottom of the sliding pin 31. A hook ring 32 is provided at the outer end of the sliding pin 31. A bushing 33 is sleeved on one end of the sliding pin 31 near the hook ring 32, and a spring 34 is sleeved on the sliding pin 31 with one end acting on the shoulder 312 and the other end acting on the bushing 33. The elastic core 3 of the first connecting rod 1 also adopts a similar structure, including a strip-shaped slide rod 35. A strip-shaped guide hole 351 is opened in the axial direction of the slide rod 35. A strip-shaped spring 36 is provided in the guide hole 351, which can act between the inner end of the slide rod 35 and the first connecting rod 1 to make the slide rod 35 retract inward. The outer end of the slide rod 35 is a ring buckle 37. The ring buckle 37 of the slide rod 35 is engaged with the hook ring 32 at the outer end of the sliding pin 31. After the slide rod 35 and the sliding pin 31 are engaged, they can move freely 360 degrees.

[0045] like Figure 3 and Figure 4 As shown, two elastic cores 3 are respectively installed into the first connecting rod 1 and the second connecting rod 2. The outer side of the bushing 33 has an annular groove 331. After being placed in the mounting cavity of the second connecting rod 2, it is inserted into the annular groove 331 from the outside of the second connecting rod 2 through a pin 4, thus fixing the bushing 33. Under the action of the spring 34, the sliding pin 31 generates an inward contraction force. A pin 5 is fixed on the first connecting rod 1, extending into the guide hole 351 of the slide rod 35, and one end of the strip spring 36 acts on the pin 5. Under the action of the strip spring 36 and the spring 34, the slide rod 35 also generates an inward contraction force. Since the slide rod 35 and the sliding pin 31 are interlocked, the strip spring 36 in the first connecting rod 1 and the spring 34 in the second connecting rod 2 react on the first connecting rod 1 and the second connecting rod 2, causing the ends of the first connecting rod 1 and the second connecting rod 2 to abut against each other. That is, the first connecting rod 1 and the second connecting rod 2 are connected by two elastic cores 3, presenting as shown in the figure. Figure 1 The state shown.

[0046] like Figure 5 As shown, the end face 21 of the second connecting rod 2 is flat, and a protrusion 7 is provided in the middle part of the end face 21. The edge part of the end face 21 is used to abut against the first connecting rod 1. The hook ring 32 is flat, and a guide through hole 23 for guiding the hook ring 32 is provided in the protrusion 7. The guide through hole 23 can be a complete through hole or two groove structures forming a shape similar to a through hole. The hook ring 32 can extend out of the second connecting rod 2 and be fastened to the slide rod 35.

[0047] like Figure 6 As shown, the end face 12 of the first connecting rod end 11 is a square annular end face. Two baffles 8 are provided on the side of the end 11 along the contraction direction of the elastic core 3. The edge 13 of the baffles 8 is a straight strip plane. The two baffles 8 are flush with the end face 12 of the first connecting rod end 11. The end face of the first connecting rod end 11 is adjacent to and perpendicular to the baffles 8. The part where the baffles 8 intersect with the end face is the starting end of the baffles 8. The end of the baffles 8 is provided with a limiting surface 14 to prevent the baffles 8 from passing through. The limiting surface 14 is a blocking part between the outer peripheral side of the first connecting rod end 11 and the end face 21 of the second connecting rod 2 to prevent the second connecting rod 2 from detaching from the guide structure. A clearance channel 15 for the movement of the elastic core 3 is provided at the bottom of the groove between the baffles 8. The width between the baffles 8 is greater than the width of the clearance channel 15 on the folding positioning surface. The end 11 of the first connecting rod is a hollow structure, and its inner wall is provided with a groove 16 for guiding the slide rod 35 in the contraction direction. The groove 16 is formed by protruding ribs or between the baffles on the protrusion 7. The slide rod 35 is set in the groove 16 and the ring 37 extends out of the groove 16 to be engaged with the hook 32 of the slide rod 35.

[0048] Combination Figure 1 ,like Figure 7 As shown, when this component is in the unfolded state, the width of the protrusion 7 and the spacing between the baffles 8 are exactly matched or slightly smaller than the spacing between the baffles 8. Under the action of elastic force, the end face 21 of the second connecting rod 2 presses against the end face 12 of the end 11 of the first connecting rod, and the protrusion 7 on the end face 21 of the second connecting rod 2 is located between the starting ends of the baffles 8 of the first connecting rod 1, forming an initial snap-fit ​​connection state. Figure 8 As shown, protrusion 7 is located within the hollow cavity of the end 11 of the first connecting rod, that is, the lower half of protrusion 7 is located between the starting ends of the baffles 8, and the upper half of protrusion 7 is located within the hollow cavity of the end 11 of the first connecting rod. The engagement positions of the ring 37 and the hook 32 are also located within the cavity of the end 11. The edge of the end face 21 of the second connecting rod 2 is pressed against the edge 13 on the side of the end 11 of the first connecting rod. The second connecting rod 2 can rotate counterclockwise to allow the lower half of protrusion 7 to pass through the starting end between the two baffles 8. During the rotation of the second connecting rod 2, as... Figure 9 As shown, the edge of the end face 21 of the second connecting rod 2 abuts against the two fulcrums 17 of the edge 13, and the slide rod 35 is partially pulled out, so that the hook 32 on the sliding pin 31 can rotate around the ring 37. After continuing to rotate and passing the dead point, the second connecting rod 2 is approximately perpendicular to the first connecting rod 1. The edge of the end face 21 of the second connecting rod 2 abuts against the edge 13 on the side of the end 11. Under the contraction force of the slide rod 35, the slide rod 35 moves along the slide groove 16 and drives the protrusion 7 of the second connecting rod 2 to engage between the baffles 8. The end face 21 of the second connecting rod 2 moves along the edge 13 and the protrusion 7 abuts against the limiting surface 14, forming the folded state of the temple assembly. Figure 10 As shown.

[0049] The blocking part can be adopted as follows: Figure 13 The structure shown can be replaced by an equivalent one, namely, a blocking block 9 is provided at the end of the protrusion 7. After the protrusion 7 moves between the baffles 8, the blocking block 9 can abut against the end face 12 of the end 11. With this blocking part, the limiting surface 14 between the baffles 8 can be omitted.

[0050] Figure 8As shown, to facilitate the insertion of the ring 37 into the hook 32, the hook 32 is elongated and includes a hook-shaped body 321 and an elastic fastening piece 322 integrally connected to the body 321. The elastic fastening piece 322 is an extension of the hook-shaped portion of the body 321. The elastic fastening piece 322 extends to the side of the body 321 to form a closed annular hook body. The ring 37 passes through the annular hook body between the elastic fastening piece 322 and the body 321. A concave-convex structure is provided between the elastic fastening piece 322 and the body 321 to restrict the movement of the elastic fastening piece, namely a first concave-convex structure 61 that restricts the elastic fastening piece from detaching radially from the body and a second concave-convex structure 62 that restricts the elastic fastening piece from detaching axially from the body. The first concave-convex structure 61 and the second concave-convex structure 62 are both protrusions that cooperate with the baffles.

[0051] Example 2:

[0052] Example 2 is the same as Example 1, except for the guide structure, such as... Figure 11 and Figure 12 As shown, the system includes multiple baffles 8 disposed on the end face 21 of the second connecting rod 2. Two elongated protrusions 7 are disposed on the outer peripheral side of the end 11 of the first connecting rod, along the contraction direction of the elastic core 3. When the end face 21 of the second connecting rod 2 rotates to a position relative to the outer peripheral side of the end 11 of the first connecting rod, the baffles move and engage the protrusions 7 between the baffles 8. A clearance channel 15 for the elastic core 3 to pass through is provided on the outer peripheral sidewall between the two protrusions 7. The blocking part is a blocking block 9 disposed at the end of the protrusion 7, which abuts against the blocking block 9 after the second connecting rod 2 moves on the protrusion 7. Figure 14 As shown, the blocking part can be replaced by the limiting surface 14 set between the ends of the baffle 8. After the second connecting rod 2 moves on the protrusion 7, the assembly surface can abut against the starting end of the blocking block 9. Meanwhile, the blocking block 9 can be omitted.

[0053] The other structures are the same as in Embodiment 1, and will not be described again.

[0054] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention 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 the invention or exceeding the scope defined by the appended claims.

Claims

1. A temple assembly for eyeglasses, comprising a first connecting rod (1) and a second connecting rod (2), each having an elastic core (3), wherein the outer ends of the two elastic cores (3) are interlocked to abut against the first connecting rod (1), characterized in that, A protrusion (7) is provided on the end face (21) of the second connecting rod (2). When the second connecting rod (2) rotates relative to the first connecting rod (1) to a mutually perpendicular position, the protrusion (7) is engaged in the end side of the first connecting rod (1). The elastic core (3) provided in the first connecting rod (1) includes a strip-shaped slide rod (35). The outer end of the slide rod (35) is a ring (37). The elastic core (3) provided in the second connecting rod (2) includes a strip-shaped slide rod (35). The core (3) includes a sliding pin (31) with a hook (32) at its outer end. The hook (32) is flat and includes a hook-shaped body (321) and an elastic fastening piece (322) integrated with the body (321). The elastic fastening piece (322) is an extension of the hook-shaped part of the body (321). The elastic fastening piece (322) extends to the side of the body (321) to form a closed annular hook. The ring buckle (37) is inserted into the annular hook and, in the elastic... Between the fastening piece (322) and the body (321), there is a first concave-convex structure (61) that restricts the elastic fastening piece (322) from detaching radially along the body (321) and a second concave-convex structure (62) that detaches axially along the body (321). A guide through hole (23) for guiding the hook ring (32) is provided in the protrusion (7). The end side of the first connecting rod (1) has parallel baffles (8). The protrusion (7) is inserted between the two baffles (8). Between the end side of the first connecting rod (1) and the end face (21) of the second connecting rod (2), there is a blocking part to prevent the second connecting rod (2) from detaching from the baffle (8). The blocking part is a limiting surface (14) provided between the ends of the two baffles (8). The protrusion (7) can abut against the limiting surface (14). Alternatively, the blocking part is a blocking block (9) provided at the end of the protrusion (7). The blocking block (9) can abut against the starting end of the baffle (8).

2. The temple assembly according to claim 1, characterized in that, The width of the protrusion (7) is less than the distance between the two baffles (8).

3. The temple assembly according to claim 1 or 2, characterized in that, The edges (13) of the two baffles (8) are flat, the end face (21) of the second connecting rod (2) is flat, and the end face (21) of the second connecting rod (2) abuts against the edges (13).

4. The temple assembly according to claim 1 or 2, characterized in that, The end (11) of the first connecting rod (1) is a hollow structure, and the inner wall of the end (11) is provided with a groove (16) for guiding the elastic core (3) in the contraction direction; the elastic core (3) provided in the first connecting rod (1) includes a strip-shaped slide rod (35), and a strip-shaped guide hole (351) is opened in the axial direction of the slide rod (35). A strip-shaped spring (36) is provided in the guide hole (351) to act between the inner end of the slide rod (35) and the first connecting rod (1) to make the slide rod (35) contract inward. The slide rod (35) is provided in the groove (16).

5. The temple assembly according to claim 4, characterized in that, A pin (5) is fixed on the first connecting rod (1). The pin (5) extends into the guide hole (351) of the slide rod (35) and one end of the bar spring (36) acts on the pin (5).

6. The temple assembly according to claim 1 or 2, characterized in that, The inner end of the sliding pin (31) has a shoulder (312), and a bushing (33) is fixed inside the second connecting rod (2). The sliding pin (31) passes through the bushing (33), and a spring (34) with one end acting on the shoulder (312) and the other end acting on the bushing (33) is on the outer sleeve of the sliding pin (31). The hook (32) extends out of the second connecting rod (2) and is fastened to the sliding rod (35).

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