Safety belt guide ring capable of eliminating noise

Abstract

A safety belt guide ring capable of eliminating noise comprises a metal ring and a connecting seat. The metal ring comprises a connecting hole, a first through hole, an edge and a connecting part. The edge comprises a first edge and a second edge. The connecting base comprises a fixing hole, a fixing ring, a second penetrating hole, a clamping part, an abutting block, an abutting part and a clamping edge. The abutting part comprises a first step and a second step. Compared with the prior art, the edge and the abutting part which are flush with each other in height are arranged, so that the metal ring and the connecting seat do not generate steps due to height difference, and the situation that notches or burrs are generated on the edge and the surface of a sliding safety belt is abraded due to the fact that the service time is prolonged is prevented; the driving experience of a user is prevented from being affected by noise generated by a cavity or steps when the safety belt is pulled, meanwhile, accurate grinding and polishing are conducted on the connecting position of the edge and the abutting part, burrs and flaws are removed, the service life of a product is prolonged, and the attractiveness of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile safety belts, in particular to a safety belt guide ring capable of eliminating noise. Background Art

[0002] The car seat belt guide ring is a key component of the car safety system. It plays a guiding role in the process of pulling out and retracting the seat belt. It is installed on the B-pillar of the car, next to the headrest of the car seat. The seat belt extends from the retractor outlet at the bottom of the car body, passes through the guide groove on the guide ring to change direction, and then restrains the human body, thereby achieving a protective effect on the user.

[0003] For example, in the German invention DE102009060721A1, the Chinese invention CN201910063986.X discloses a seat belt guide ring, and the Chinese utility model CN202320828941 discloses a seat belt guide ring and other patent documents, a metal annular frame and a plastic part wrapped outside the annular frame are provided, and the seat belt passes through the strip hole of the seat belt guide ring, and sliding friction is formed between the seat belt and the guide ring when the seat belt moves.

[0004] Although the above patent prevents the wear of the seat belt by providing metal edging, topcoat layer, etc., due to the limitations of the injection molding process, steps will be generated between the metal parts and the plastic parts. During use, the edge of the step may bend or notch due to impact, aging, etc., thereby causing wear on the sliding seat belt. At the same time, when the seat belt is pulled, a certain amount of noise will be generated due to the cavity created by the step or direct friction with the step, affecting the user experience. Summary of the invention

[0005] In view of this, the utility model provides a safety belt guide ring capable of eliminating noise to solve the above technical problem.

[0006] A safety belt guide ring capable of eliminating noise comprises a metal ring and a connection seat connected to the metal ring. The metal ring comprises a connection hole opened on the main body, a first through hole opened on one side of the connection hole, an edge arranged along the metal ring, and a connection portion connected to the edge. The edge is an edge located on the outside of the metal ring and comprises a first edge and a second edge. The first edge and the second edge are respectively located at two ends of the connection portion having an arc-shaped cross section. The first edge and the second edge are both located on the side away from the center of the connection portion, and form an inclined surface from the thickness of the main body of the metal ring to the free end. The connection portion is an arc-shaped structure located on the side of the first through hole away from the connection hole. The connection seat comprises a fixing hole opened on the main body, a fixing ring arranged on the fixing hole, a second through hole arranged on one side of the fixing hole, a clamping portion arranged between the fixing hole and the second through hole, a resisting block arranged on the other side of the second through hole, a resisting top portion arranged on the periphery of the resisting block, and a clamping edge arranged around the connection seat. The other side of the clamping portion facing the second perforation is an arc surface. The abutment block is arranged on the other side of the second perforation away from the clamping portion. The abutment top is a clamping step arranged on both sides of the connecting portion, and includes a first step and a second step. When the metal ring and the connecting seat are buckled, the first edge abuts on the first step, and the second edge abuts on the second step. The thickness of the step formed by the abutment top is consistent with and flush with the thickness of the free end of the edge, and the splicing surface at the connection is a smooth transition plane.

[0007] Furthermore, the connecting hole is a circular through hole arranged on the metal ring.

[0008] Furthermore, the first through hole is a long strip-shaped through hole arranged on one side of the connecting hole, and the length of the hole body is consistent with the width of the safety belt.

[0009] Furthermore, when the metal ring is buckled with the connecting seat, the fixing hole overlaps with the connecting hole, and the second through hole corresponds to the position of the first through hole.

[0010] Furthermore, the fixing ring is a protrusion arranged on the edge of the fixing hole, and the protrusion direction is the radial direction of the fixing hole.

[0011] Furthermore, the clamping portion is located between the fixing hole and the second through hole, and a clamping step is provided on a side facing the fixing hole.

[0012] Furthermore, the connection between the edge and the abutment top is a tight fit with a gap of 0, and is subjected to grinding and polishing processes.

[0013] Compared with the prior art, the noise-eliminating safety belt guide ring provided by the utility model reduces the friction between the safety belt and the guide ring and ensures the strength of the safety belt guide ring by providing the metal ring and the connecting seat. At the same time, by providing the connecting portion and the clamping portion with an arc surface, the wear on the surface of the safety belt when the safety belt passes through is avoided, and the flexibility of the safety belt can be ensured. Finally, by providing the edge and the top portion with a high level, the metal ring and the connecting seat will not have steps due to the height difference, and the edge will not have notches or burrs due to the increase in the length of use, which will cause wear on the sliding surface of the safety belt, and avoid noise caused by cavities or rubbing against steps when pulling the safety belt, which affects the user's driving experience. At the same time, the connection between the edge and the top portion is finely ground and polished to remove burrs and defects, thereby improving the product's service life and aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic structural diagram of a safety belt guide ring capable of eliminating noise.

[0015] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the noise-eliminating seat belt guide ring.

[0016] Figure 3 for Figure 1 Schematic diagram of a top view of a noise-eliminating seat belt guide ring.

[0017] Figure 4 for Figure 3 Schematic cross-sectional view of a noise-eliminating seat belt guide ring on section AA. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0019] like Figures 1 to 4 As shown in FIG. 1 , it is a schematic diagram of the structure of the seat belt guide ring capable of eliminating noise provided by the utility model. The seat belt guide ring capable of eliminating noise includes a metal ring 10 and a connecting seat 20 connected to the metal ring 10. It is conceivable that the seat belt guide ring capable of eliminating noise also includes other functional modules such as a mounting hole for installation, a limit portion arranged on the back, etc., which are well known to those skilled in the art and will not be described in detail here.

[0020] The metal ring 10 is made of a metal material with high mechanical strength and is treated by a high temperature annealing process to eliminate internal stress so as to have a stronger bearing capacity. The metal ring 10 includes a connecting hole 11 opened on the main body, a first through hole 12 opened on one side of the connecting hole, an edge 13 arranged along the metal ring 19, and a connecting portion 14 connected to the edge 13.

[0021] The connecting hole 11 is a circular through hole provided on the metal ring 10 , and is used for clamping the metal ring 10 and the connecting seat 20 at the connecting hole 11 using fasteners after the metal ring 10 is buckled together. This will be specifically described below in conjunction with the corresponding structure of the connecting seat 20 .

[0022] The first through hole 12 is a long strip-shaped through hole arranged on one side of the connecting hole 11, and the length of the hole body is adapted to the width of the safety belt so as to allow the safety belt to pass through.

[0023] The edge 13 is an edge located on the outside of the metal ring 10, and includes a first edge 131 and a second edge 132. The first edge 131 and the second edge 132 are respectively located at the two ends of the connecting portion 14 having an arc-shaped cross section. The first edge 131 and the second edge 132 are both located on the side away from the center of the connecting portion 14, and form a slope from the thickness of the main body of the metal ring 10 to the free end, so as to facilitate connection with the connecting seat 20. In addition, during casting, grinding, polishing and other processes are used to ensure that the edge 13 has no burrs and a smooth surface, so that there are no gaps, steps, burrs, etc. when connecting with the corresponding structure of the connecting seat 20.

[0024] The connecting portion 14 is an arc-shaped structure located on the side of the first through hole 12 away from the connecting hole 11, so as to facilitate the clamping of the metal ring 10 on the connecting seat 20. At the same time, the arc surface structure allows the safety belt to slide when passing through the first through hole 12 without causing wear and damage to the surface of the safety belt.

[0025] The connecting seat 20 includes a fixing hole 21 opened on the main body, a fixing ring 22 arranged on the fixing hole 21, a second through hole 23 arranged on one side of the fixing hole 21, a clamping portion 24 arranged between the fixing hole 21 and the second through hole 23, an abutting block 25 arranged on the other side of the second through hole 23, a circle of abutting top portions 26 arranged around the abutting block 25, and a clamping edge 27 arranged around the connecting seat 20.

[0026] The fixing hole 21 is arranged on the main body of the connecting seat 20, and when the metal ring 10 is buckled with the connecting seat 20, it overlaps with the connecting hole 11, so that a fastener can pass through to fix the entire guide ring on the B-pillar of the car.

[0027] The fixing ring 22 is a protrusion provided on the edge of the fixing hole 21, and the protrusion direction is the radial direction of the fixing hole 21, so that when the metal ring 10 is buckled with the connecting seat 20, it is buckled on the connecting hole 11, thereby realizing the fixed connection between the metal ring 10 and the connecting seat 20. It is conceivable that, in order to facilitate disassembly and ensure the stability of the combination, the fixing ring 22 can be a fastening structure connected to the fixing hole 21 by threading, which is something that can be thought of by those skilled in the art, and is not the main content of the utility model, so it is only briefly described in the specification here, and is not illustrated and marked in the drawings of the specification.

[0028] The second through hole 23 is disposed on one side of the fixing hole 21 , and when the metal ring 10 is buckled with the connecting seat 20 , the second through hole 23 corresponds to the position of the first through hole 12 for the safety belt to pass through.

[0029] The clamping portion 24 is located between the fixing hole 21 and the second through hole 23, and a clamping step is provided on the side facing the fixing hole 21. By clamping the edge of the first through hole 12, the metal ring 10 is buckled on the connecting seat 20 in cooperation with the fixing ring 22. The other side of the clamping portion 24 facing the second through hole 23 is an arc surface, so that when the safety belt passes through, the surface of the safety belt will not be worn.

[0030] The abutting block 25 is arranged on the other side of the second through hole 23 away from the clamping portion 24, and is adapted to the curvature of the connecting portion 14, so that when the metal ring 10 is buckled on the connecting seat 20, the abutting block 25 is stuck in the curvature of the connecting portion 14, thereby ensuring the stability of the buckling of the metal ring 10 and the connecting seat 20.

[0031] The abutting top portion 26 is a clamping step arranged on both sides of the connecting portion 14, and includes a first step 261 and a second step 262. When the metal ring 10 and the connecting seat 20 are buckled, the first edge 131 abuts against the first step 261, and the second edge 132 abuts against the second step 262. The thickness of the step formed by the abutting top portion 26 is consistent with and flush with the thickness of the free end of the edge 13, and the connection is a tight fit with a gap of 0, and the burrs on the plastic surface are removed by grinding, polishing and other processes, so that the joint surface of the connection between the metal ring 10 and the connecting seat 20 is a smooth transition of the same plane, so that the safety belt will not be scratched and worn during use, and will not cause noise when it is quickly pulled and retracted due to the cavity on the surface of the safety ring.

[0032] The clamping edge 27 is a protective structure arranged around the connecting seat 20, which is used to improve the aesthetics after the guide ring is installed on the B-pillar of the car, and provides support for the edge of the guide ring body, thereby enhancing the mechanical strength of the guide ring.

[0033] Compared with the prior art, the noise-eliminating safety belt guide ring provided by the utility model reduces the friction between the safety belt and the guide ring and ensures the strength of the safety belt guide ring by setting the metal ring 10 and the connecting seat 20. At the same time, by setting the connecting portion 14 and the clamping portion 24 with an arc surface, the wear on the surface of the safety belt when the safety belt passes through is avoided, and the flexibility of the safety belt can be ensured. Finally, by setting the edge 13 and the top portion 26 with a high level, the metal ring 10 and the connecting seat 20 will not have steps due to the height difference, and the edge will not have notches or burrs due to the increase in the length of use, which will cause wear on the sliding surface of the safety belt, and avoid noise caused by cavities or rubbing against steps when pulling the safety belt, which affects the user's driving experience. At the same time, the connection between the edge 13 and the top portion 26 is finely ground and polished to remove burrs and defects, thereby improving the product's service life and aesthetics.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A seat belt guide ring capable of eliminating noise, characterized in that: The noise-eliminating safety belt guide ring includes a metal ring and a connecting seat connected to the metal ring, the metal ring includes a connecting hole opened on the main body, a first through-hole opened on one side of the connecting hole, an edge arranged along the metal ring, and a connecting portion connected to the edge, the edge is an edge located on the outer side of the metal ring, and includes a first edge and a second edge, the first edge and the second edge are respectively located at two ends of the connecting portion with an arc-shaped cross-section, the first edge and the second edge are both on the side away from the center of the connecting portion, and an inclined surface is formed from the thickness of the main body of the metal ring to the free end, the connecting portion is an arc-shaped structure located on the side of the first through-hole away from the connecting hole, the connecting seat includes a fixing hole opened on the main body, a fixing hole arranged on the fixing hole A fixing ring, a second through-hole arranged on one side of the fixing hole, a clamping portion arranged between the fixing hole and the second through-hole, a resisting block arranged on the other side of the second through-hole, a circle of resisting top portions arranged on the periphery of the resisting top portions, and a clamping edge arranged around the connecting seat, the other side of the retaining portion facing the second through-hole is an arc surface, the resisting block is arranged on the other side of the second through-hole away from the retaining portion, the resisting top portions are retaining steps arranged on both sides of the connecting portion, and include a first step and a second step, when the metal ring and the connecting seat are buckled, the first edge resists on the first step, and the second edge resists on the second step, the thickness of the step formed by the resisting top portion is consistent with and flush with the thickness of the free end of the edge, and the splicing surface at the connection is a smooth transition plane.

2. The seat belt guide ring capable of eliminating noise according to claim 1, characterized in that: The connecting hole is a circular through hole arranged on the metal ring.

3. The seat belt guide ring capable of eliminating noise according to claim 1, characterized in that: The first through hole is a long strip-shaped through hole arranged on one side of the connecting hole, and the length of the hole body is consistent with the width of the safety belt.

4. The seat belt guide ring capable of eliminating noise according to claim 1, characterized in that: When the metal ring is buckled with the connecting seat, the fixing hole overlaps with the connecting hole, and the second through hole corresponds to the position of the first through hole.

5. The seat belt guide ring capable of eliminating noise according to claim 1, characterized in that: The fixing ring is a protrusion arranged on the edge of the fixing hole, and the protrusion direction is the radial direction of the fixing hole.

6. The seat belt guide ring capable of eliminating noise according to claim 1, characterized in that: The clamping portion is located between the fixing hole and the second through hole, and a clamping step is provided on a side facing the fixing hole.

7. The seat belt guide ring capable of eliminating noise according to claim 1, characterized in that: The connection between the edge and the abutment top is a tight fit with a gap of 0, and is subjected to grinding and polishing process.

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