Assembled safety belt guide ring

Abstract

An assembled safety belt guide ring comprises a metal ring and a connecting seat. The metal ring comprises a first connecting hole, a first through hole, an edge and a connecting part. The connecting base comprises a fixing part, a buckle elastic piece, a second through hole, a clamping part and an abutting part. The fixing part comprises a second connecting hole and a limiting blocking rib. The clamping part is provided with a first clamping elastic piece, a second clamping elastic piece and a clamping protruding block. Compared with the prior art, through the arrangement of the buckle elastic piece, the possibility that a conventional thread structure is loosened during violent impact or long-term use can be effectively avoided. The stability and the reliability of the connecting structure are ensured through the first clamping elastic piece, and meanwhile, the metal ring can be prevented from displacing relative to the connecting seat through the second clamping elastic piece and the clamping convex block. The abutting part is arranged, so that a gap between the metal ring and the connecting seat in the direction perpendicular to the mounting direction can be effectively made up.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile safety belt, especially relates to an assembled safety belt guide ring. BACKGROUND

[0002] The automobile safety belt guide ring is a key part of the automobile safety system, and plays a guiding role in the pulling out and winding of the safety belt. It is installed on the B column of the automobile and located beside the headrest of the automobile seat. The safety belt is stretched out from the winder outlet at the lower part of the vehicle body, passes through the guide groove on the guide ring for reversing, and then restrains the human body, thereby achieving the protection effect on the user.

[0003] As disclosed in the safety belt guide ring of the German invention DE102009060721A1, the Chinese invention CN201910063986.X, and the Chinese utility model CN202320828941, an annular framework made of metal and a plastic part wrapped outside the annular framework are provided. The safety belt passes through the strip-shaped hole of the safety belt guide ring, and sliding friction is formed between the safety belt and the guide ring when the safety belt moves.

[0004] Although the above-mentioned patent fixes the metal part and the plastic part by setting a threaded part, the strength of the connection part is not high. When the vehicle is subjected to a strong impact or after long-term use, the threaded part may become loose, causing the metal part and the plastic part to become loose. There are also schemes that use a buckle structure instead of a threaded part. However, when the precision of the metal part and the plastic part is not high enough, or the precision changes due to thermal expansion and contraction during long-term use, a gap may occur between the metal part and the plastic part, causing abnormal noise during vehicle driving. Therefore, a better assembly method is needed to ensure the reliable connection between the metal part and the plastic part and to compensate for the gap caused by insufficient precision or changes in precision. SUMMARY

[0005] Therefore, the utility model provides an assembled safety belt guide ring to solve the above technical problems.

[0006] An assembled safety belt guiding ring comprises a metal ring and a connecting seat connected with the metal ring. The metal ring comprises a first connecting hole formed on the main body, a first through hole formed on one side of the first connecting hole, a rim arranged along the metal ring, and a connecting part connected with the rim. The rim is the edge of the outer side of the metal ring, and a first edge and a second edge are arranged on the rim on the side of the first through hole away from the first connecting hole. The connecting part is an arc structure on the side of the first through hole away from the first connecting hole, and connects the first edge and the second edge. The connecting seat comprises a fixing part formed on the main body, three buckle elastic sheets arranged on the fixing part, a second through hole arranged on one side of the fixing part, a clamping part arranged between the fixing part and the second through hole, and a stop part arranged on the other side of the second through hole. The fixing part comprises a second connecting hole formed on the connecting seat, and three limiting ribs arranged around the second connecting hole. A plurality of wedge-shaped guide ribs are arranged on the inner wall of the second through hole, and the thickness of the guide ribs gradually increases in the mounting direction of the metal ring. Two first clamping elastic sheets are symmetrically arranged on the clamping part, a second clamping elastic sheet is arranged between the two first clamping elastic sheets, and a clamping protrusion is arranged on the second clamping elastic sheet. One end of each of the two first clamping elastic sheets is connected to the main body of the clamping part, and the other end thereof extends perpendicularly to the main body of the connecting seat. One end of the second clamping elastic sheet is connected to the main body of the clamping part, and the other end thereof extends towards the main body of the connecting seat, and the extending direction is inclined to the main body of the clamping part. The stop part is arranged on the other side of the second through hole away from the clamping part, and comprises a plurality of elastic sheets arranged towards the clamping part. One end of each of the elastic sheets is connected to the inner wall of the second through hole, and the other end thereof extends towards the clamping part, and the extending direction is inclined to the inner wall of the second through hole.

[0007] Further, the first connecting hole is a circular through hole arranged on the metal ring, and an arc-shaped guiding structure is arranged at the edge.

[0008] Further, the first through hole is a strip-shaped through hole arranged on one side of the first connecting hole, and the length of the hole body is consistent with the width of the safety belt. The side of the first through hole close to the first connecting hole is inwardly protruded, and an arc-shaped guiding structure is arranged at the edge of the protruded part.

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

[0010] Further, the distance between the first perforation and the second perforation is 2.2mm.

[0011] Further, the buckle elastic sheet is arranged between two adjacent limiting ribs and is spaced from the limiting ribs to form a hollow column structure together with the limiting ribs.

[0012] Further, a buckle protrusion is arranged on the buckle elastic sheet, the buckle protrusion is a protrusion with a right triangle cross section, is located on a side of the buckle elastic sheet away from the center of the second connecting hole, the right angle side of the buckle protrusion is located on a side of the main body of the connecting seat, and the oblique side of the buckle protrusion is located on a side away from the main body of the connecting seat.

[0013] Further, the end of the free end of the first buckle elastic sheet is bent towards a side away from the main body of the connecting seat, the bending angle is less than or equal to 90°, and a guide inclined surface is arranged on the side of the bending part away from the main body of the connecting seat, the guide inclined surface is towards the bending direction of the first buckle elastic sheet.

[0014] Further, the connecting seat further comprises a limiting buckle arranged on a side of the abutting part away from the connecting part and a clamping edge arranged around the connecting seat, the limiting buckle is a protrusion arranged on the connecting seat, and the height of the limiting buckle is less than the thickness of the first edge.

[0015] Compared with the prior art, the assembled safety belt guide ring is connected and fixed on the connecting seat through the buckle elastic sheet, is convenient to assemble, is stable in connection, and can effectively avoid the possibility that a conventional threaded structure is loosened in severe impact or long-term use. The metal ring and the connecting seat are reinforced through the first buckle elastic sheet, the stability and reliability of the connecting structure are ensured, the metal ring is prevented from being displaced relative to the connecting seat through the second buckle elastic sheet and the buckle protrusion, the metal ring is abutted against the connecting seat through the abutting part and the structure of the elastic sheet, the gap between the metal ring and the connecting seat in the direction perpendicular to the mounting direction is effectively compensated, the metal ring is ensured to be tightly attached to the connecting seat without gap, and abnormal sound is avoided during vehicle driving. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structural schematic view of the assembled safety belt guide ring is provided.

[0017] Figure 2 A structural schematic view of the assembled safety belt guide ring is provided. Figure 1 An exploded structural schematic view of the assembled safety belt guide ring is provided.

[0018] Figure 3 As Figure 1 the assembly type safety belt guide ring has the structure diagram of connecting seat 20.

[0019] Figure 4 As Figure 1 the assembly type safety belt guide ring has the structure diagram of connecting seat 20.

[0020] Figure 5 As Figure 4 the assembly type safety belt guide ring has the structure diagram of connecting seat 20. DETAILED DESCRIPTION

[0021] The specific embodiments of the utility model will be further described in detail below.It should be understood that the description of the utility model embodiments herein does not limit the protection scope of the utility model.

[0022] As Figures 1 to 5 shown, it is the structure diagram of assembly type safety belt guide ring provided by the utility model.The assembly type safety belt guide ring includes a metal ring 10 and a connecting seat 20 connected with the metal ring 10.It is conceived that the assembly type safety belt guide ring also includes other functional modules such as mounting sleeve hole for installation, limiting portion arranged on the back and the like, which is the technology known to those skilled in the art, and will not be repeated here.

[0023] The metal ring 10 is made of high-strength metal material, and is treated by high-temperature annealing process to eliminate internal stress, so as to have stronger bearing capacity.The metal ring 10 includes a first connecting hole 11 opened on the main body, a first perforation 12 opened on one side of the first connecting hole 11, a rim 13 arranged along the metal ring 19 and a connecting portion 14 connected with the rim 13.

[0024] The first connecting hole 11 is a circular through hole arranged on the metal ring 10, and the arc-shaped guide structure is arranged at the edge to be used for clamping the buckle structure at the first connecting hole 11 after the metal ring 10 is buckled with the connecting seat 20, which will be described in detail below in combination with the corresponding structure of the connecting seat 20.

[0025] The first through hole 12 is a strip-shaped through hole arranged on one side of the first connecting hole 11, and the length of the hole body is adapted to the width of the safety belt for the safety belt to pass through. The side of the first through hole 12 close to the first connecting hole 11 is protruded inward, so that the first through hole 12 becomes a concave-shaped through hole, and the edge of the protruded part is provided with an arc-shaped guide structure for clamping the buckle structure at the first through hole 12 after the metal ring 10 is buckled with the connecting seat 20, which will be described in detail below in combination with the corresponding structure of the connecting seat 20.

[0026] The edge 13 is the edge of the outer side of the metal ring 10, and a first edge 131 and a second edge 132 are arranged on the edge 13 away from the first connecting hole 11. The first edge 131 and the second edge 132 are respectively located at the two ends of the connecting part 14 with an arc-shaped cross section. In addition, during casting, the edge 13 is polished and polished to ensure that the edge 13 is burr-free and smooth, so as to be seamless, stepless, burr-free and the like when connected with the corresponding structure of the connecting seat 20.

[0027] The connecting part 14 is an arc-shaped structure located on the side of the first through hole 12 away from the first connecting hole 11, and connects the first edge 131 and the second edge 132, so as to facilitate clamping the metal ring 10 on the connecting seat 20, and the arc-shaped structure enables 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.

[0028] The connecting seat 20 can be a plastic part made of plastic injection molding, and includes a fixing part 21 arranged on the main body, three buckle springs 22 arranged on the fixing part 21, a second through hole 23 arranged on one side of the fixing part 21, a clamping part 24 arranged between the fixing part 21 and the second through hole 23, a stop part 25 arranged on the other side of the second through hole 23, a limiting block 26 arranged on the side of the stop part 25 away from the clamping part 24, and a clamping edge 27 arranged around the connecting seat 20.

[0029] The fixing part 21 comprises a second connecting hole 211 formed on the connecting seat 20, and three limiting ribs 212 arranged around the second connecting hole 211. The second connecting hole 211 is a circular through hole, and is coaxial with the first connecting hole 11 when the metal ring 10 is buckled with the connecting seat 20, and can be penetrated by a fastener to fix the whole guide ring on the B column of the automobile. The limiting ribs 212 are arranged vertically on the edges of the second connecting hole 211, and are arranged at intervals, and enclose a hollow columnar structure, and the diameter is smaller than the diameter of the first connecting hole 11, so that the limiting ribs 212 can penetrate the first connecting hole 11 when the metal ring 10 is buckled with the connecting seat 20.

[0030] The buckle elastic sheet 22 is arranged between two adjacent limiting ribs 212, and is arranged at intervals with the limiting ribs 212, and encloses a hollow columnar structure with the limiting ribs 212, so as to penetrate the first connecting hole 11. The buckle elastic sheet 22 is connected to the main body of the connecting seat 20 at one end, and is arranged with a spacing groove on the side away from the second connecting hole 211, and is extended vertically at the other end, so as to be elastically deformed. A buckle protrusion 221 is arranged on the free end of the buckle elastic sheet 22, and the buckle protrusion 221 is a protrusion with a right triangle cross section, and is located on the side away from the center of the second connecting hole 211. The right angle side of the buckle protrusion 221 is located on the side of the main body of the connecting seat 20, so as to abut against the edge of the first connecting hole 11, so as to buckle the metal ring 10 on the connecting seat 20. The oblique side of the buckle protrusion 221 is located on the side away from the main body of the connecting seat 20, so as to play a guiding role, and facilitate buckling the metal ring 10. It is conceivable that when the metal ring 10 is assembled with the connecting seat 20, the first connecting hole 11 is aligned with the fixing part 21, and the metal ring 10 is pressed towards the connecting seat 20, the edge of the first connecting hole 11 slides along the oblique side of the buckle protrusion 221, so that the buckle elastic sheet 22 is elastically deformed towards the center of the second connecting hole 211, and when the metal 10 abuts against the main body of the connecting seat 20, the edge of the first connecting hole 11 slides past the vertex of the buckle protrusion 221, the buckle elastic sheet 22 rebounds under the action of elastic deformation, and the right angle side of the buckle protrusion 221 buckles the edge of the first connecting hole 11, so as to fix the metal ring 10 on the connecting seat 20.

[0031] The second through hole 23 is arranged on one side of the fixed part 21 and corresponds to the first through hole 12 when the metal ring 10 is buckled with the connecting seat 20, so as to pass through the safety belt. The inner wall of the second through hole 23 is further provided with a plurality of wedge-shaped guide ribs 231, the thickness of the guide rib 231 gradually increases in the mounting direction of the metal ring 10, so as to compensate for the gap between the metal ring 10 and the connecting seat 20, cooperate with the elastic member, even if the metal ring 10 and the connecting seat 20 are not accurate enough, the thickness of the guide rib can be compensated. In addition, the distance between the first through hole 12 and the second through hole 23 after overlapping, that is, the distance from the clamping part 24 to the connecting part 14 is 2.2mm, so that the safety belt can be smoothly pulled, and the safety belt can be effectively prevented from folding in the width direction.

[0032] The clamping part 24 is a protrusion between the fixed part 21 and the second through hole 23. The clamping part 24 is provided with two symmetrically arranged first clamping springs 241, a second clamping spring 242 arranged between the two first clamping springs 241, and a clamping protrusion 243 arranged on the second clamping spring 242.

[0033] Both the first clamping spring 241 is connected to the main body of the clamping part 24 at one end, and the other end is perpendicular to the main body of the connecting seat 20 and freely extends, and the free end is arranged away from the main body of the clamping part 24, so that it can be elastically deformed. The end of the free end of the first clamping spring 241 is bent towards the side away from the main body of the clamping part 24, and the bending angle can be less than or equal to 90°, so as to be buckled on the edge of the first through hole 12, and in addition, the side away from the main body of the connecting seat 20 of the bending part is further provided with a guide inclined surface, which is towards the bending direction of the first clamping spring 241, so as to play a guiding role when the first through hole 12 is buckled.

[0034] The second clamping spring 242 is connected to the main body of the clamping part 24 at one end, and the other end extends towards the main body of the connecting seat 20, and the extension direction is inclined to the main body of the clamping part 24, so that when the metal ring 10 is buckled with the connecting seat 20, the edge of the first through hole 12 will slide along the second clamping spring 242, and push the second clamping spring 242 to elastically deform towards the main body of the clamping part 24.

[0035] The clamping protrusion 243 is arranged on the free end of the second clamping elastic sheet 242, which can be a protrusion with a straight-angled trapezoidal cross section, and correspondingly, a groove is arranged at the corresponding position of the edge of the second through hole 23, and when the metal ring 10 is buckled with the connecting seat 20, the protrusion is clamped into the groove, thereby limiting the movement of the metal ring 10 relative to the connecting seat 20 in the horizontal direction perpendicular to the installation direction of the two, and ensuring the adhesion of the two.

[0036] The abutting part 25 is arranged on the other side of the second through hole 23 away from the clamping part 24, which is a plurality of elastic sheets arranged towards the clamping part 24, one end of the elastic sheet is connected to the inner wall of the second through hole 23, the other end extends towards the clamping part 24, and is arranged obliquely to the inner wall of the second through hole 23, so that when the metal ring 10 is buckled on the connecting seat 20, the elastic sheet of the abutting part 25 abuts on the arc of the connecting part 14 and pushes the metal ring 10 upwards, thereby ensuring the stability of the buckling of the metal ring 10 and the connecting seat 20, and can compensate for the gap caused by the insufficient precision of the product.

[0037] The limiting clamping block 26 is a protrusion arranged on the connecting seat 20, which is used to abut against the first edge 131. The height of the limiting clamping block 26 is less than the thickness of the first edge 131, so that when the metal ring 10 abuts against the limiting clamping block 26, the limiting clamping block 26 does not protrude relative to the metal ring 10 and does not wear the surface of the safety belt.

[0038] 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 column of the automobile, and provides support for the edge of the body of the guide ring, thereby strengthening the mechanical strength of the guide ring.

[0039] Compared with the prior art, the assembled safety belt guide ring provided by the utility model connects and fixes the metal ring 10 on the connecting seat 20 through the buckle elastic sheet 22, which is convenient to assemble, stable in connection, and can effectively avoid the loosening of the conventional threaded structure in the process of severe impact or long-term use. The first clamping elastic sheet 241 is arranged to strengthen the metal ring 10 and the connecting seat 20, thereby ensuring the stability and reliability of the connecting structure, and the second clamping elastic sheet 242 and the clamping protrusion 243 are arranged to prevent the metal ring 10 from moving relative to the connecting seat 20. The abutting part 25 is arranged to abut against the metal ring 10 by using the structure of the elastic sheet, which can effectively compensate for the gap between the metal ring 10 and the connecting seat 20 in the direction perpendicular to the installation direction, ensure that the metal ring 10 and the connecting seat 20 are tightly attached without gap, and avoid abnormal noise during vehicle driving.

[0040] The above merely is the preferred embodiment of the present application, and is not used for limiting the protection scope of the present application, and any modification, equivalent replacement or improvement etc. within the spirit of the present application are all covered in the claim scope of the present application.

Claims

1. An assembled seat belt guide ring, characterized in that: The assembled seat belt guide ring includes a metal ring and a connecting seat connected to the metal ring. The metal ring includes a first connecting hole on the main body, a first through hole on one side of the first connecting hole, an edge along the metal ring, and a connecting portion connected to the edge. The edge is an outer edge of the metal ring, and a first edge and a second edge are provided on the edge of the first through hole on the side away from the first connecting hole. The connecting portion is an arc-shaped structure on the side of the first through hole away from the first connecting hole, connecting the first edge and the second edge. The connecting seat includes a fixing portion on the main body, three snap-fit ​​springs on the fixing portion, a second through hole on one side of the fixing portion, a snap-fit ​​portion between the fixing portion and the second through hole, and a top abutment on the other side of the second through hole. The fixing portion includes a second... The device includes a connecting hole and three limiting ribs arranged around the second connecting hole. Multiple wedge-shaped guide ribs are also provided on the inner wall of the second through hole. The thickness of the guide ribs gradually increases in the installation direction of the metal ring. The snap-fit ​​portion has two symmetrically arranged first snap-fit ​​springs, a second snap-fit ​​spring between the two first snap-fit ​​springs, and a snap-fit ​​protrusion on the second snap-fit ​​spring. Both first snap-fit ​​springs have one end connected to the main body of the snap-fit ​​portion, and the other end extends freely perpendicular to the main body of the connecting seat. The second snap-fit ​​spring has one end connected to the main body of the snap-fit ​​portion, and the other end extends towards the main body of the connecting seat, with the extension direction inclined to the main body of the snap-fit ​​portion. The abutment is located on the other side of the second through hole away from the snap-fit ​​portion, and consists of multiple elastic pieces facing the snap-fit ​​portion. One end of each elastic piece is connected to the inner wall of the second through hole, and the other end extends towards the snap-fit ​​portion, with the piece inclined to the inner wall of the second through hole.

2. The assembled seat belt guide ring as described in claim 1, characterized in that: The first connecting hole is a circular through hole provided on the metal ring, and an arc-shaped guide structure is provided at the edge.

3. The assembled seat belt guide ring as described in claim 1, characterized in that: The first perforation is a strip-shaped through hole located on one side of the first connecting hole. The length of the hole is the same as the width of the seat belt. The side of the first perforation closest to the first connecting hole protrudes inward, and the edge of the protruding part is provided with an arc-shaped guide structure.

4. The assembled seat belt guide ring as described in claim 1, characterized in that: When the metal ring is fastened to the connecting seat, the second connecting hole coincides with the first connecting hole, and the second through hole corresponds to the position of the first through hole.

5. The assembled seat belt guide ring as described in claim 4, characterized in that: The distance between the inner holes after the first and second perforations overlap, i.e. the distance from the snap-fit ​​part to the connecting part, is 2.2 mm.

6. The assembled seat belt guide ring as described in claim 1, characterized in that: The snap-fit ​​springs are respectively disposed between two adjacent limiting ribs, spaced apart from the limiting ribs, and together with the limiting ribs form a hollow columnar structure.

7. The assembled seat belt guide ring as described in claim 1, characterized in that: The snap-fit ​​spring is also provided with a snap-fit ​​protrusion, which is a protrusion with a right-angled triangle cross section, and is located on the side of the snap-fit ​​spring away from the center of the second connecting hole. The right-angled side of the snap-fit ​​protrusion faces the side where the main body of the connecting seat is located, and the hypotenuse of the snap-fit ​​protrusion faces the side away from the main body of the connecting seat.

8. The assembled seat belt guide ring as described in claim 1, characterized in that: The free end of the first snap-fit ​​spring is bent toward the side away from the main body of the snap-fit ​​part, and the bending angle is less than or equal to 90°. A guide slope is also provided on the side of the bent part away from the main body of the connecting seat, and the guide slope is toward the bending direction of the first snap-fit ​​spring.

9. The assembled seat belt guide ring as described in claim 1, characterized in that: The connector also includes a limiting block disposed on the side of the abutment away from the snap-fit ​​portion, and a snap edge disposed around the connector. The limiting block is a protrusion disposed on the connector, and the height of the limiting block is less than the thickness of the first edge.

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