Fixing structure of earpiece

Abstract

The utility model provides a fixing structure of earpieces, and belongs to the technical field of glasses. The problems that the swing stability of the earpiece is poor and the swing positioning precision is poor are solved. The connecting rod comprises a first connecting rod and a second connecting rod provided with a mounting hole, a fixing column is fixedly connected to the first connecting rod, a plurality of spacing grooves are evenly distributed in one end of the fixing column in the circumferential direction, a clamping part is arranged on the fixing column, the spacing grooves are formed in the clamping part, and a matching part which can be clamped with the clamping part to be positioned in the axial direction of the fixing column is arranged in the mounting hole. The clamping part can elastically deform in the direction close to the center line of the fixing column in the radial direction of the fixing column when clamped with the matching part, and the outer wall of the end, provided with the interval groove, of the fixing column can abut against the inner wall of the mounting hole. The mechanism has the advantages of more stable swing positioning, higher precision and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of glasses, and particularly relates to a fixing structure of temple arms of glasses. Background Art

[0002] Glasses are indispensable daily necessities in people's lives. With the progress of science and technology, people's requirements for glasses are getting higher and higher. For this reason, glasses manufacturers and designers are constantly striving for perfection in every component of glasses to make them more comfortable and convenient to wear. In the prior art, for the folding part of a glasses frame, that is, the hinge device provided at the connection between the spectacle frame and the temple arms, most of them use the method of screws and threaded holes. However, in such a structure, components such as screw heads are exposed, which not only affects the appearance of the glasses frame but also easily catches on things such as clothes. Therefore, someone has invented a glasses hinge and a glasses frame with a patent number of 201721288595.0, which includes a first set, a connector, and a second set; the first set is rotatably sleeved on the first end of the connector, and the second set is fixedly sleeved on the second end of the connector.

[0003] Although the above-mentioned glasses hinge and glasses frame can achieve the hinge between the first set and the second set through the connector, there are still the following deficiencies: in the above solution, the convex platform at the end of the connector is snapped into the arc groove at the bottom of the rotating cavity to achieve the rotational connection between the connector and the first connecting plate. To ensure that the convex platform can smoothly snap into the arc groove under the tension of the connecting part, the outer diameter of the connecting part needs to be less than or equal to the inner diameter of the rotating cavity (if the outer diameter of the connecting part is greater than the inner diameter of the rotating cavity, when the convex platform snaps into the arc groove, the outer wall of the connecting part will first abut against the inner wall of the rotating cavity, resulting in the convex platform not being able to fully expand, and thus there will be looseness between the convex platform and the arc groove after installation). Then, the connecting part will not generate a radial force on the rotating cavity, resulting in an inability to accurately position the swing angle between the first connecting plate and the second connecting plate when swinging the first connecting plate or the second connecting plate, and due to external factors, the first connecting plate or the second connecting plate will swing by itself. Summary of the Invention

[0004] The purpose of the present utility model is to address the above problems existing in the prior art, and propose a fixing structure of temple arms of glasses, which solves the problems of poor swing stability and poor swing positioning accuracy of temple arms.

[0005] The purpose of the present utility model can be achieved by the following technical solutions:

[0006] A fixing structure for spectacle temples, comprising a first connecting rod and a second connecting rod provided with a mounting hole. A fixing column is fixedly connected to the first connecting rod. A plurality of spaced grooves are evenly distributed circumferentially at one end of the fixing column. It is characterized in that the fixing column is provided with a clamping portion, the spaced grooves are opened to the clamping portion, and the mounting hole is provided with a matching portion capable of being clamped with the clamping portion to form axial positioning along the fixing column. The clamping portion can elastically deform radially towards the center line of the fixing column when clamped with the matching portion, and the outer wall of the end of the fixing column having the spaced grooves can abut against the inner wall of the mounting hole.

[0007] Since a plurality of spaced grooves are evenly opened circumferentially at one end of the fixing column, the end portion of the fixing column is divided into several lobes, and there is a gap between every two adjacent lobes, so that the portion of the fixing column provided with the spaced grooves can deform inwards or outwards. Since the mounting hole is provided with a matching portion capable of being clamped with the clamping portion to form axial positioning along the fixing column, and since the spaced grooves are opened to the clamping portion, when the end of the fixing column having the spaced grooves is inserted into the mounting hole and the clamping portion is clamped with the matching portion to form axial positioning, axial fixation between the first connecting rod and the second connecting rod can be achieved. Also, since the clamping portion can elastically deform radially towards the center line of the fixing column when clamped with the matching portion, when the clamping portion is clamped with the matching portion, the matching portion will form a radial acting force acting radially inwards along the fixing column on the clamping portion, thereby causing the matching portion to radially squeeze the clamping portion towards the fixing column. Since the end of the fixing column extending into the mounting hole can deform inwards or outwards, when the clamping portion is squeezed, the end of the fixing column having the spaced grooves will expand outwards, so that the outer wall of this end abuts against the inner wall of the mounting hole and forms a radially expanding tension, enabling a certain frictional force to be formed between the first connecting column and the second connecting column when the first connecting column rotates relative to the second connecting column. Thus, while ensuring that the first connecting column or the second connecting column can swing smoothly, the fixing structure of the spectacle temple can also ensure a stable swing angle after swinging, preventing the first connecting rod and the second connecting rod from deflecting and swinging on their own due to the shaking of the glasses, thereby improving the swing positioning accuracy of the fixing structure of the spectacle temple.

[0008] In the above-mentioned fixing structure for spectacle temples, both the clamping portion and the matching portion are annular.

[0009] Through the annular clamping portion and the matching portion, after the annular clamping portion is inserted into the annular matching portion, the clamping portion and the matching portion can be closely attached to each other, thereby realizing the axial fixation of the fixing column in the positioning hole. By setting the clamping portion and the matching portion to be annular, not only can it play a role in installation guidance to reduce wear during installation, but also the contact area between the clamping portion and the matching portion can be increased, thereby further enhancing the axial fixation of the fixing column in the positioning hole.

[0010] In the above-mentioned fixing structure of the eyeglass leg, the clamping part is an annular groove with an arc-shaped bottom wall, the matching part is an annular ridge matching the annular groove, and the minimum radial dimension of the annular ridge is smaller than the minimum radial dimension of the annular groove.

[0011] The locking portion is an annular groove with an arc-shaped bottom wall, and the matching portion is an annular convex edge matching the annular groove. When the locking portion is inserted into the matching portion to form a locking connection, axial positioning can be formed between the fixing column and the connection second. Since the minimum radial dimension of the annular convex ring is smaller than the minimum radial dimension of the annular groove, the annular convex edge will form an inward radial force on the annular groove, so that the end of the fixing column with one end of the intermediate groove can expand outward and abut against the inner wall of the mounting hole, so that the end of the fixing column away from the connecting rod one abuts against the inner wall of the mounting hole and forms a tension extending in the radial direction, thereby enhancing the friction force of the swinging between the connection column one and the connection column two, and improving the accuracy of the angular positioning after the swinging. At the same time, the bottom wall of the annular groove is arc-shaped, so that the fixing column can play a guiding role in the process of inserting or pulling out the mounting hole. Compared with the prior art, the fixing structure of the eyeglass leg will not cause excessive wear or damage to the matching portion or the locking portion when the fixing column is pulled out.

[0012] In the above-mentioned fixing structure of the eyeglass leg, as another technical solution, the matching part is an annular groove with an arc-shaped bottom wall, the clamping part is an annular ridge matching the annular groove, and the maximum radial dimension of the annular groove is smaller than the maximum radial dimension of the annular ridge.

[0013] The locking portion is configured to lock the locking cam of the fixing post and the fixing post into position relative to the locking cam of the fixing post, thereby ensuring that the fixing post is securely locked to the locking cam of the fixing post.

[0014] In the above-mentioned fixing structure of the temple of spectacles, a through hole is axially provided in the fixing column, and the through hole is communicated with the intermediate groove.

[0015] The provision of the through-hole can increase the degree of deformation of the part of the fixing post with the slot, so that when the clamping part is radially extruded by the mating part, the tension at the end of the fixing post with the slot can be stronger, thereby further enhancing the swing stability and the positioning accuracy after swinging between the first connecting rod and the second connecting rod.

[0016] Compared with the prior art, a fixing structure of an eyeglass leg has the following advantages: when the clamping part is extruded, it will cause the end of the fixing post with the slot and away from the first connecting rod to expand outward and abut against the inner wall of the mounting hole and form a radially expanding tension, so that a certain frictional force can be formed between the first connecting column and the second connecting column when the first connecting column rotates relative to the second connecting column. Therefore, while ensuring that the first connecting column or the second connecting column can swing smoothly, the fixing structure of this eyeglass leg can also ensure a stable swing angle after swinging, so that the first link rod and the second connecting rod will not deflect their swing angles by themselves due to the shaking of the glasses, thereby improving the swing positioning accuracy of the fixing structure of this eyeglass leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of the first embodiment of the fixing structure of the eyeglass leg;

[0018] Figure 2 is the front view and left view of the fixing post in the first embodiment of the fixing structure of the eyeglass leg;

[0019] Figure 3 is a partial cross-sectional view of the second connecting rod in the first embodiment of the fixing structure of the eyeglass leg;

[0020] Figure 4 is a cross-sectional view of the second embodiment of the fixing structure of the eyeglass leg;

[0021] Figure 5 is the front view and left view of the fixing post in the second embodiment of the fixing structure of the eyeglass leg;

[0022] Figure 6 is a partial cross-sectional view of the second connecting rod in the second embodiment of the fixing structure of the eyeglass leg;

[0023] Figure 7 is the top view of the second connecting rod in the fixing structure of the eyeglass leg;

[0024] Figure 8 is the top view of the first connecting rod in the fixing structure of the eyeglass leg.

[0025] In the figure, 1 is the first connecting rod; 1a is the first rotating part; 1a1 is the fixing hole; 1a2 is the first limiting part; 1b is the first rotating rod; 2 is the second connecting rod; 2a is the second rotating part; 2a1 is the mounting hole; 2a11 is the mating part; 2a2 is the second limiting part; 2b is the second rotating rod; 3 is the fixing column; 3a is the intermediate groove; 3b is the clamping part; 3c is the through hole. Detailed implementation manners

[0026] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0027] Embodiment 1

[0028] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 、 Figure 8 shown, a fixing structure of an eyeglass leg includes the first connecting rod 1 and the second connecting rod 2. Specifically, the first connecting rod 1 includes the first rotating part 1a and the first rotating rod 1b, and the second connecting rod 2 includes the second rotating part 2a and the second rotating rod 2b. And the first rotating part 1a abuts against the second rotating part 2a. When the first rotating part 1a abuts against the second rotating part 2a, the rotational connection between the first rotating rod 1b and the second rotating rod 2b can be realized through the fixing column 3. More specifically, a fixing hole 1a1 is provided in the first rotating part 1a, and the fixing column 3 is installed in the fixing hole 1a1 by fixing methods such as interference fit or overfit or welding. And a plurality of intermediate grooves 3a are uniformly distributed along the circumferential direction at one end of the fixing column 3 extending out of the fixing hole 1a1. Through the plurality of intermediate grooves 3a, one end of the fixing column 3 extending out of the fixing hole 1a1 is divided into a plurality of lobes, and there is a gap between every two adjacent lobes, so that this end of the fixing column 3 can deform inwards or outwards. When the fixing column 3 at the end extending out of the fixing hole 1a1 is inserted into the second rotating part, the hinge connection between the first rotating part 1a and the second rotating part 2a can be realized. At this time, the second connecting rod 2 or the first connecting rod 1 can be swung around the central axis of the fixing column 3.

[0029] Furthermore, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 、 Figure 8As shown, an installation hole 2a1 is provided on the rotating part 2a of the second connecting rod 2. The fixing column 3 can be clamped by extending into the installation hole 2a1, thereby completing the hinged connection between the first rotating part 1a and the second rotating part 2a. Specifically, the fixing column 3 has a clamping part 3b, and the installation hole 2a1 has a matching part 2a11 that can be clamped with the clamping part 3b to form axial positioning along the axis of the fixing column 3, thereby realizing the axial fixation between the first connecting rod 1 and the second connecting rod 2. And the clamping part 3b can elastically deform along the radial direction of the fixing column 3 towards the center line of the fixing column 3 when clamped with the matching part 2a11. And because the groove 3a is opened on the clamping part 3b, when the fixing column 3 makes the first rotating part 1a and the second rotating part 2a axially fixed, the matching part 2a11 will form a radial force on the clamping part 3b to squeeze the clamping part 3b to deform inwards, so that the end of the groove 3a away from the first connecting rod 1 expands outwards and abuts against the inner wall of the installation hole 2a1 and forms a radially expanding tension, so that when the first connecting column rotates relative to the second connecting column, a certain frictional force can be formed between the two, so that the fixing structure of this spectacle leg can ensure a smooth swing of the first connecting column or the second connecting column, and can also ensure a stable swing angle after swinging, so that the first link rod and the second connecting rod 2 will not deflect and swing by themselves due to the shaking of the glasses, thereby improving the swing positioning accuracy of the fixing structure of this spectacle leg.

[0030] Further, as Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 shown, both the clamping part 3b and the matching part 2a11 are annular. Through the annular clamping part 3b and the matching part 2a11, when the annular clamping part 3b is clamped into the annular matching part 2a11, the clamping part 3b and the matching part 2a11 can be closely attached to each other, thereby realizing the axial fixation of the fixing column 3 in the positioning hole. By setting the clamping part 3b and the matching part 2a11 to be annular, the contact area between the clamping part 3b and the matching part 2a11 can be increased, thereby further enhancing the axial fixation of the fixing column 3 in the positioning hole.

[0031] As Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8As shown, further and more specifically, the clamping portion 3b is an annular groove with an arc-shaped bottom wall, and the mating portion 2a11 is an annular convex edge that matches the annular groove. When the clamping portion 3b is inserted into the mating portion 2a11 to form a clamping connection, axial positioning can be achieved between the fixing column 3 and the second connecting rod 2. Moreover, since the inner diameter of the annular convex edge (i.e., the minimum radial dimension of the annular convex edge) is smaller than the bottom diameter of the annular groove (i.e., the minimum radial dimension of the bottom wall of the annular groove), the annular convex edge will exert an inward radial force on the annular groove. As a result, the end of the fixing column 3 with the slot 3a can expand outward and abut against the inner wall of the mounting hole 2a1, causing the end of the fixing column 3 away from the first connecting rod 1 to abut against the inner wall of the mounting hole 2a1 and form a radially expanding tension. This enhances the frictional force during the swing between the first connecting column and the second connecting column and improves the accuracy of the angular positioning after the swing. At the same time, due to the arc-shaped bottom wall of the annular groove, the fixing column 3 can play a guiding role during the insertion or extraction of the fixing column 3 into or from the mounting hole 2a1. Compared with the prior art, the fixing structure of this spectacle leg will not cause excessive wear or damage to the mating portion 2a11 or the clamping portion 3b when the fixing column 3 is pulled out.

[0032] Further, as Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 shown, a through hole 3c is axially formed in the fixing column 3, and the through hole 3c communicates with the slot 3a. By providing the through hole 3c, the degree of deformation of the part of the fixing column 3 with the slot 3a can be increased, so that when the clamping portion 3b is radially squeezed by the mating portion 2a11, the tension at the end of the fixing column 3 with the slot 3a can be stronger, thereby further enhancing the swing stability and the positioning accuracy after the swing between the first connecting rod 1 and the second connecting rod 2.

[0033] As Figure 7 , Figure 8 shown, further, the first rotating portion 1a has a first limiting portion 1a2, and the second rotating portion 2a has a second limiting portion 2a2. After the first connecting rod 1 and the second connecting rod 2 are hinged through the fixing column 3, by swinging the first rotating rod 1b or the second rotating rod 2b, the first limiting portion 1a2 can be made to abut against the second limiting portion 2a2. By providing the first limiting portion 1a2 or the second limiting portion 2a2, the swing angles of the first rotating rod 1b and the second rotating rod 2b can be limited.

[0034] Among them, the shape of the groove projected on the axial cross-section perpendicular to the fixing column 3 can be various shapes (such as a straight line, a Sichuan shape, a cross shape, etc.), as long as it can achieve the radial division of one end of the fixing column 3 inserted into the mounting hole 2a1, and achieve the change of the radial size of this end of the fixing column 3, so that the clamping portion 3b is squeezed at the matching portion 2a11 so that the fixed end of the fixing column 3 inserted into the mounting hole 2a1 can expand outward and abut against the inner wall of the mounting hole 2a1.

[0035] Embodiment 2

[0036] The structure and principle of this embodiment are basically the same as those of the first embodiment. Figures 4 to 8 As shown, the difference is that: the matching portion 2a11 is an annular groove with an arc-shaped bottom wall, and the clamping portion 3b is an annular convex edge matching the annular groove. When the clamping portion 3b is clamped into the matching portion 2a11 to form a clamping connection, the fixing column 3 and the second connection can be axially positioned. Since the groove bottom diameter of the annular groove (i.e., the maximum radial dimension of the bottom wall of the annular groove) is smaller than the outer diameter of the annular convex edge (i.e., the maximum radial dimension of the annular convex edge), the annular groove will form an inward radial force on the annular convex edge, so that the end of the fixing column 3 having one end of the intermediate groove 3a can expand outward to align with the mounting hole. 2a1, so that the end of the fixing column 3 away from the connecting rod 1 abuts against the inner wall of the mounting hole 2a1 and forms a tension extending in the radial direction, thereby enhancing the friction force of the swing between the connecting column 1 and the connecting column 2, and improving the accuracy of the angle positioning after the swing. At the same time, the bottom wall of the annular groove is arc-shaped, so that the fixing column 3 can play a guiding role in the process of inserting or pulling out the mounting hole 2a1. Compared with the prior art, the fixing structure of the eyeglass foot will not cause excessive wear or damage to the matching part 2a11 or the clamping part 3b when the fixing column 3 is pulled out.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A fixing structure for eyeglass feet, comprising a connecting rod 1 (1) and a connecting rod 2 (2) provided with a mounting hole (2a1), a fixing column (3) being fixedly connected to the connecting rod 1 (1), and a plurality of slots (3a) being evenly distributed along the circumferential direction on one end of the fixing column (3), characterized in that: The fixing column (3) has a clamping portion (3b), the slot (3a) is opened on the clamping portion (3b), the mounting hole (2a1) has a matching portion (2a11) that can be clamped with the clamping portion (3b) to form an axial positioning portion of the fixing column (3), the clamping portion (3b) can be elastically deformed along the radial direction of the fixing column (3) toward the center line of the fixing column (3) when clamped with the matching portion (2a11), and the outer wall of one end of the fixing column (3) having the slot (3a) can be abutted against the inner wall of the mounting hole (2a1).

2. The fixing structure of the glasses leg according to claim 1, characterized in that: The clamping portion (3b) and the matching portion (2a11) are both annular.

3. The fixing structure of the temple of glasses according to claim 2, characterized in that: The clamping portion (3b) is an annular groove with an arc-shaped bottom wall, and the matching portion (2a11) is an annular convex edge matching the annular groove, and the minimum radial dimension of the annular convex edge is smaller than the minimum radial dimension of the annular groove.

4. The fixing structure of the temple of glasses according to claim 2, characterized in that: The matching portion (2a11) is an annular groove with an arc-shaped bottom wall, and the clamping portion (3b) is an annular convex edge matching the annular groove. The maximum radial dimension of the annular groove is smaller than the maximum radial dimension of the annular convex edge.

5. A fixing structure for the temple of glasses according to claim 1, 2, 3 or 4, characterized in that: A through hole (3c) is provided in the fixing column (3) along the axial direction, and the through hole (3c) is connected to the intermediate groove (3a).

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