WO2021051916A1

WO2021051916A1 - Safety belt self-locking tongue

Info

Publication number: WO2021051916A1
Application number: PCT/CN2020/097594
Authority: WO
Inventors: 杜恒; 徐俊
Original assignee: 延锋汽车智能安全系统有限责任公司
Priority date: 2019-09-18
Filing date: 2020-06-23
Publication date: 2021-03-25
Also published as: CN110450753A

Abstract

A safety belt self-locking tongue (1), comprising: a tongue body (2, 1002), the tongue body (2, 1002) having a horizontal opening (212, 1212) through which a safety belt fabric strap (5) passes; a rotating body (3, 1003), the rotating body (3, 1003) being supported near the horizontal opening (212, 1212) of the tongue body (2, 1002) and being capable of rotating between an initial position and a locked position, the rotating body (3, 1003) having through holes (31, 1031) therein, the through holes (31, 1031) only opening from a left side surface and a right side surface of the rotating body (3, 1003); and a reset member (4, 1004), the reset member (4, 1004) being provided in the through holes (31, 1031) of the rotating body (3, 1003) and configured to bias the rotating body (3, 1003) to the initial position. The safety belt self-locking tongue can achieve the function of locking the safety belt fabric strap.

Description

Safety belt self-locking tongue

Technical field

The present disclosure relates to the field of automobile safety, and more specifically to a safety belt self-locking bolt.

Background technique

At present, three-point safety belts are widely used in vehicles, and the webbing of the three-point safety belt is provided with a slidable bolt. When the passenger wears the seat belt, insert the bolt into the mortise lock to be restrained on the vehicle seat. The lock tongue divides the webbing into a shoulder belt section for restricting the forward movement of the passenger's upper body and a waist belt section for restricting the forward movement of the passenger's waist.

Ordinary seat belt tongues do not have the ability to lock the webbing, so the length of the shoulder belt section and the waist belt section can change with the movement of the passenger's body. Under normal conditions of the vehicle, the webbing can be freely pulled out and rolled in from the retractor to fix the passengers in the specified position. In an emergency situation such as a vehicle collision, the retractor locks the total length of the webbing due to the inertial mechanism, and the passenger's waist will have a large displacement, and the waistband section of the webbing is stretched, resulting in the shortening of the shoulder belt section. The shortening of the shoulder straps will compress the passenger's chest, thereby causing injury to the passenger's chest.

At present, a seat belt tongue with a locking function has been developed, which restricts the mutual movement between the waist belt section and the shoulder belt section by applying a locking force on the webbing, thereby reducing the damage to the passenger's chest. The lock tongue is provided with a revolving body supported by a rotating shaft, and the revolving body can be rotated from an initial position to a locking position to lock the webbing, and can be reset from the locking position to the initial position by a resetting member. In the existing seat belt bolt, the reset piece is inserted into the revolving body from the front of the revolving body and the side cover is used for shielding, or the reset piece is embedded in the overmolded part of the bolt main body.

However, the use of the rotating shaft as the support or guide of the revolving body increases the assembly difficulty and structural complexity of the bolt. Inserting the front of the resetting part into the revolving body requires an additional side cover, and when the load on the webbing is too large, the side cover is easy to loosen from the revolving body; and embedding the resetting part in the overmolding part increases the process difficulty and reduces Improve the stability of the parts.

Summary of the invention

One of the objectives of the present disclosure is to provide a safety belt self-locking bolt that can overcome at least one of the defects in the prior art.

The subject technology of the present disclosure is explained in terms of various aspects described below. For convenience, various examples of various aspects of the subject technology are described as numbered terms (1, 2, 3, etc.). These terms are provided as examples, rather than limiting the subject technology of the present disclosure.

1. A safety belt self-locking bolt, wherein the safety belt self-locking bolt comprises:

A main body of the bolt, the main body of the bolt having a horizontal opening through which the webbing of the safety belt passes;

A revolving body supported near the horizontal opening of the bolt body and capable of rotating between an initial position and a locked position, the revolving body having a through hole located inside the revolving body, the through hole is only from the revolving body Openings on the left and right side surfaces; and

The resetting member is disposed in the through hole of the revolving body and configured to bias the revolving body to an initial position.

2. The safety belt self-locking bolt according to clause 1, wherein the bolt body is provided with a left support portion and a right support portion on the left and right sides of the horizontal opening, and the left support portion and the right support portion are configured Into a support slewing body.

3. The safety belt self-locking bolt according to

clause

1 or 2, wherein the resetting member is arranged to pass through the through hole of the left support part, the through hole of the revolving body, and the through hole of the right support part.

4. The safety belt self-locking bolt according to clause 2, wherein the restoring member is substantially linear, and the central part has one or more wavy parts.

5. The safety belt self-locking bolt according to clause 4, wherein the height of the wave-shaped part is greater than the height of the through hole of the revolving body, and the wave-shaped part is assembled in the through hole of the revolving body in a pre-compressed manner.

6. The safety belt self-locking bolt according to clause 4, wherein one of the ends of the restoring member has a limit part configured to be connected to one of the left support part and the right support part. The limit groove matches.

7. The safety belt self-locking bolt according to clause 6, wherein the limiting portion is substantially hook-shaped.

8. The safety belt self-locking bolt according to clause 6, wherein the limiting groove is provided on the horizontal outer side of the through hole of the one supporting part.

9. The safety belt self-locking bolt according to clause 6, wherein the wave-shaped part of the reset piece and the limiting part are at a certain angle, and the limiting groove of the one supporting part and the through hole of the one supporting part Into the same angle.

10. The safety belt self-locking bolt according to clause 6, wherein the through hole of the one supporting part and the through hole of the revolving body have the same shape.

11. The safety belt self-locking bolt according to clause 2, wherein the revolving body is substantially C-shaped and includes an upper curved surface, a lower curved surface, a front surface, a rear surface, and a connection between the upper curved surface, the lower curved surface, the front surface and the rear surface. The left side surface and the right side surface of the surface.

12. The safety belt self-locking bolt according to clause 11, wherein the through hole of the revolving body is located at the rear part of the revolving body and is approximately waist-shaped.

13. The safety belt self-locking bolt according to clause 12, wherein, in the cross section in the front-rear direction, the curvature of the outer contour of the through hole of the revolving body and the curvature of the upper curved surface of the revolving body remain substantially the same.

14. The safety belt self-locking bolt according to clause 11, wherein the through hole of the revolving body is located at the front part of the revolving body, and is approximately in the shape of a waist with a branch at the end.

15. The safety belt self-locking bolt according to clause 14, wherein, in the cross section in the front-rear direction, the curvature of the outer contour of the branch portion of the through hole of the revolving body is approximately the same as the upper curved surface of the revolving body.

16. The seat belt self-locking bolt according to clause 11, wherein the left support portion and the right support portion are provided with arc-shaped protrusions protruding inward in the horizontal direction, and the revolving body is supported on the arc-shaped protrusion Get up and can rotate around the arc-shaped protrusion.

17. The seat belt self-locking tongue according to clause 16, wherein the lower curved surface of the revolving body is attached to the upper surface of the arc-shaped protrusion, so that the lower curved surface of the revolving body can wrap around the upper surface of the arc-shaped protrusion in the initial Rotate between position and locked position.

18. The seat belt self-locking bolt according to clause 16, wherein the upper curved surface of the revolving body is in contact with the upper surface of the horizontal opening, so that when the revolving body rotates around the arc-shaped protrusion between the initial position and the locked position At this time, the upper curved surface of the revolving body can slide along the upper surface of the horizontal opening.

19. The safety belt self-locking bolt according to clause 18, wherein the upper surface of the horizontal opening is in a convex arc shape.

20. The safety belt self-locking bolt according to clause 16, wherein the revolving body is configured to rotate in a channel formed by the upper surface of the horizontal opening and the upper surface of the arc-shaped protrusion.

21. The seat belt self-locking bolt according to clause 11, wherein the rear surface of the revolving body abuts on the seat belt webbing, so that the movement of the seat belt webbing can drive the revolving body to rotate from the initial position to the locked position.

22. The seat belt self-locking bolt according to clause 11, wherein a webbing channel for the seat belt webbing to pass is formed between the front surface of the revolving body and the lower surface of the horizontal opening, wherein, when the revolving body is in the initial position , The front surface of the revolving body and the lower surface of the horizontal opening are separated by a certain distance, and when the revolving body is in the locked position, the front surface of the revolving body and the lower surface of the horizontal opening together clamp the seat belt webbing.

23. The safety belt self-locking bolt according to clause 22, wherein the front surface of the revolving body and/or the lower surface of the horizontal opening is provided with one or more teeth.

24. The safety belt self-locking bolt according to

clause

1 or 2, wherein the bolt body, the reset piece and the revolving body are made of metal.

Other features and advantages of the subject technology of the present disclosure will be set forth in the following description, and will be partly obvious from the description, or can be learned by practicing the subject technology of the present disclosure. The advantages of the subject technology of the present disclosure will be realized and obtained through the structures particularly pointed out in the written description and its claims and the drawings.

It should be understood that the foregoing general description and the following detailed description are both exemplary and illustrative, and are intended to provide a further description of the subject technology of the present disclosure as claimed.

Description of the drawings

After reading the following specific embodiments in conjunction with the accompanying drawings, you will better understand multiple aspects of the present disclosure. In the accompanying drawings:

Fig. 1 is an assembled perspective view of a safety belt self-locking bolt according to a first embodiment of the present disclosure;

Fig. 2 is an exploded perspective view of the safety belt self-locking bolt according to the first embodiment of the present disclosure;

Figure 3 is a cross-sectional view of the seat belt self-locking tongue shown in Figure 1 in an initial position;

Figure 4 is a cross-sectional view of the seat belt self-locking bolt shown in Figure 1 in a locked position;

Figure 5 is a partial enlarged view of the limiting groove of the seat belt self-locking tongue shown in Figure 1;

Fig. 6 is a schematic diagram of the assembly operation of the seat belt self-locking bolt shown in Fig. 1;

Figure 7 is a cross-sectional view of the seat belt self-locking bolt in the initial position according to the second embodiment of the present disclosure; and

Fig. 8 is a cross-sectional view of the seat belt self-locking bolt shown in Fig. 7 in a locked position.

detailed description

The present disclosure will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways, and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete, and to contribute to the present disclosure. Those skilled in the art fully explain the protection scope of the present disclosure. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

It should be understood that the same reference numerals denote the same elements in all the drawings. In the drawings, the dimensions of certain features may be deformed for clarity.

It should be understood that the terms in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art. For conciseness and/or clarity, well-known functions or structures may not be described in detail.

The singular forms "a", "the" and "the" used in the specification include plural forms unless clearly indicated. The terms "including", "including" and "containing" used in the specification indicate the presence of the claimed feature, but do not exclude the presence of one or more other features. The term "and/or" used in the specification includes any and all combinations of one or more of the related listed items. The terms "between X and Y" and "between about X and Y" used in the specification should be interpreted as including X and Y. The term "between about X and Y" used in this specification means "between about X and about Y", and the term "from about X to Y" used in this specification means "from about X To about Y".

In the specification, when an element is referred to as being "on", "attached" to another element, "connected" to another element, "coupled" to another element, or "contacting" another element, etc., The element may be directly on another element, attached to another element, connected to another element, coupled to another element, or contacting another element, or an intermediate element may be present. In contrast, it is said that an element is “directly on” another element, “directly attached” to another element, “directly connected” to another element, “directly coupled” to another element, or, or “ When directly contacting another element, there will be no intermediate element. In the specification, when a feature is arranged "adjacent" to another feature, it may mean that a feature has a portion overlapping with an adjacent feature or a portion located above or below the adjacent feature.

In the specification, terms such as "up", "down", "left", "right", "front", "rear", "high", "low", etc. can describe one feature and another feature. The relationship in the drawing. It should be understood that, in addition to the orientation shown in the drawings, the terms of the spatial relationship also include different orientations of the device in use or operation. For example, when the device in the drawings is turned upside down, features that were originally described as being "below" other features may now be described as being "above" other features. The device can also be oriented in other ways (rotated by 90 degrees or in other orientations), at which point the relative spatial relationship will be explained accordingly.

1 and 2 respectively show an assembled perspective view and an exploded perspective view of the safety belt self-locking bolt 1 according to the first embodiment of the present disclosure. As shown in the figure, the safety belt self-locking bolt 1 includes a bolt body 2, and a revolving body 3 and a reset member 4 arranged on the bolt body 2. The bolt body 2 is slidably connected to the seat belt webbing 5 and can be removably inserted into a seat belt mortise lock (not shown). The revolving body 3 is rotatably supported on the bolt main body 2 and can be rotated from the initial position to the locking position to clamp and lock the seat belt webbing 5 together with the bolt main body 2. The reset member 4 is provided in the revolving body 3, and is used to reset the revolving body 3 from the locked position to the initial position.

The bolt body 2 includes a lower mortise lock portion 22 and an upper webbing portion 21. The mortise lock part 22 is connected to the webbing part 21, and the two may be integrally formed. The latch portion 22 protrudes downward from the webbing portion 21 and is elongated. The mortise lock portion 22 can be inserted into the seat belt mortise lock, so that the seat belt webbing 5 can restrain the passenger on the vehicle seat.

The webbing portion 21 has a substantially rectangular plate shape, and four corners of the rectangle may have rounds. The webbing portion 21 may have a certain curvature along the vertical direction. Herein, the convex side of the webbing portion 21 is referred to as the front side, and the concave side is referred to as the back side. The base plate 211 of the webbing portion 21 is provided with a horizontal opening 212 for the safety belt webbing 5 to pass through. The horizontal opening 212 may be elongated and located approximately at the center of the substrate 211. 3 and 4, the horizontal opening 212 includes an upper surface 212T, a lower surface 212B, and two side surfaces connecting the upper surface 212T and the lower surface 212B. The upper surface 212T has a convex arc shape for contacting the revolving body 3 and guiding the revolving body 3 to slide thereon. The lower surface 212B is substantially flat and faces the revolving body 3, thereby forming a webbing passage 212C through which the seat belt webbing 5 passes. When the revolving body 3 is in the initial position (see FIG. 3), the lower surface 212B and the revolving body 3 are separated by a certain distance, the webbing passage 212C is opened, and the seat belt webbing 5 can move freely through it. When the revolving body 3 rotates from the initial position to the locked position (see FIG. 4), the webbing channel 212C is closed, and the revolving body 3 and the lower surface 212B clamp the seat belt webbing 5, thereby locking the seat belt webbing 5 in place.

Returning to FIG. 2, the webbing portion 21 is provided with left and right support portions 213 on the left and right sides of the horizontal opening 212 to rotatably support the revolving body 3 on the bolt main body 2. Each supporting portion 213 includes a supporting portion main body 214 extending backward perpendicular to the base plate 211. The outer side surface of the support body 214 may be arranged to be flush with the side surface of the substrate 211 or spaced inwardly from the side surface of the substrate 211. The inner surface of the support body 214 is provided with an arc-shaped protrusion 215 extending inward in the horizontal direction. The revolving body 3 can be supported on the arc-shaped protrusion 215 and rotate around the arc-shaped protrusion 215. The inner surface of the support main body 214 can prevent the revolving body 3 from shifting in the horizontal direction. Each supporting portion 213 is also provided with a horizontal through hole 216 for the resetting member 4 to pass through. In addition, referring to FIG. 5, the outer part of the horizontal through hole 216 of the left support portion 213 is provided with a limiting groove 217 to control the assembly angle of the resetting piece 4 and prevent the resetting piece 4 from being over-assembled to completely extend into the horizontal through hole of the right support portion 213.孔216中.

The revolving body 3 cooperates with the bolt main body 2 for clamping and locking the seat belt webbing 5 when the vehicle is in an emergency. As shown in FIG. 2, the revolving body 3 is substantially C-shaped, and includes an upper curved surface 3T, a lower curved surface 3B, a front surface 3F, a rear surface 3R, and two side surfaces 3S connecting the above four surfaces. The lower curved surface 3B rests on the arc-shaped protrusions 215 of the left and right supporting parts 213. The lower curved surface 3B is attached to the upper surface of the arc-shaped protrusion 215, so that the lower curved surface 3B can rotate around the arc-shaped protrusion 215 between the initial position and the locked position. The upper curved surface 3T and the upper surface 212T of the horizontal opening 212 of the bolt body 2 fit or have the same radius of curvature, so that when the lower curved surface 3B rotates around the arc-shaped protrusion 215 between the initial position and the locked position, the upper curved surface The 3T can slide along the upper surface 212T of the horizontal opening 212. In other words, the revolving body 3 rotates in the channel formed by the upper surface 212T of the horizontal opening 212 of the bolt body 2 and the upper surface of the arc-shaped protrusion 215, so that the revolving body 3 can omit the supporting shaft, which reduces Part weight.

The rear surface 3R abuts on the seat belt webbing 5, so that the movement of the seat belt webbing 5 can drive the revolving body 3 to rotate from the initial position to the locked position when the vehicle is in an emergency. When the revolving body 3 is in the locked position, the front surface 3F can clamp and lock the seat belt webbing 5 together with the lower surface 212B of the horizontal opening 212 of the bolt main body 2, as shown in FIG. 4. In some embodiments, the front surface 3F of the revolving body 3 and/or the lower surface 212B of the horizontal opening 212 have one or more teeth, which play a role in increasing friction, so that when clamping and locking the seat belt webbing 5 No slippage occurs.

The revolving body 3 also includes a through hole 31 penetrating through its two side surfaces 3S for accommodating the reset member 4. The through hole 31 only opens on the two side surfaces 3S, and does not open and expose on the other surfaces of the revolving body 3. In the cross-section along the front-rear direction, the curvature of the outer contour of the through hole 31 is approximately the same as the upper curved surface 3T of the revolving body 3, so that the movement trajectories of the resetting member 4 and the revolving body 3 are kept consistent, which is conducive to the smooth return of the resetting member 4 initial position. The through hole 31 may be located at the rear part of the revolving body 3. In some embodiments, the through hole 31 is generally waist-shaped.

The reset member 4 is used to hold the revolving body 3 on the bolt main body 2 and bias it to the initial position, and to reset the revolving body 3 from the locked position to the initial position when the revolving body 3 is in the locked position. As shown in Fig. 2, the restoring member 4 is substantially linear. The restoring member 4 has one or more wavy portions 41 at its center, and the height of the wavy portions 41 is greater than the height of the through hole 31 of the revolving body 3, so that the restoring member 4 can be assembled in the through hole 31 in a pre-compressed manner . The right end of the restoring member 4 is linear, and is used to be inserted into the horizontal through hole 216 of the right supporting portion 213. The left end of the restoring member 4 is inserted into the horizontal through hole 216 of the left supporting portion 213, and the end has a substantially hook-shaped limiting portion 42 for mating with the limiting groove 217 of the left supporting portion 213 to control the resetting member 4 The assembly angle of the assembly and prevents the reset member 4 from being over-assembled and completely extending into the horizontal through hole 216 of the right supporting portion 213.

The limiting portion 42 and the wavy portion 41 form a certain angle, and the limiting groove 217 in the left support portion 213 and the horizontal through hole 216 form the same angle. The horizontal through hole 216 of the left supporting portion 213 has the same shape as the through hole 31 of the revolving body 3, so that the wave-shaped portion 41 of the resetting member 4 can be smoothly inserted through the two through holes, thereby controlling the angle of the resetting member 4 after being installed. The limiting groove 217 is in contact with the end surface of the limiting portion 42 of the resetting member 4 to prevent the resetting member 4 from being over-assembled and completely extending into the horizontal through hole 216 of the right supporting portion 213.

As shown in FIG. 6, the restoring member 4 passes through the horizontal through hole 216 of the left support portion 213 of the bolt body 2, the through hole 31 of the revolving body 3, and the horizontal through hole 216 of the right support portion 213 of the bolt body 2 in sequence. , Thereby assembling the revolving body 3 on the bolt body 2 and keeping it in the initial position. The horizontal through hole 216 of the right supporting part 213 can not only support the reset piece 4 but also facilitate the insertion of a removal tool into it to remove the reset piece 4.

The working principle of the safety belt self-locking tongue 1 according to the first embodiment of the present disclosure will be described below with reference to FIGS. 3 and 4. When an emergency situation such as a vehicle collision occurs, the load on the seat belt webbing 5 exceeds a prescribed load, and the seat belt webbing 5 tends to move from its shoulder belt section 52 through the webbing channel 212C toward the waist belt section 51. The waistband section 51 of the seat belt webbing 5 closely adheres to the rear surface 3R of the revolving body 3 and generates sliding friction, thereby pushing the revolving body 3 to resist the resetting force of the resetting member 4, and surround the arc-shaped protrusion 215 of the bolt body 2 from the initial position Turn counterclockwise (see arrow A) to the locked position.

In the locked position, the webbing channel 212C is closed, and the front surface 3F of the revolving body 3 squeezes the webbing webbing 5 onto the lower surface 212B of the horizontal opening 212 until it is deformed, thereby clamping and locking the webbing webbing 5. Therefore, the waist belt section 51 and the shoulder belt section 52 of the seat belt webbing 5 cannot move mutually, thereby reducing the displacement of the passenger's waist and reducing the damage to the passenger's chest. At this time, the restoring member 4 is in an elastically deformed state.

When the load applied to the seat belt webbing 5 is released, the waist belt section 51 of the seat belt webbing 5 releases contact with the rear surface 3R of the revolving body 3, and the restoring force of the reset member 4 causes the revolving body 3 to return to the initial position from the locked position position. Thereby, the front surface 3F of the revolving body 3 moves away from the lower surface 212B of the horizontal opening 212, and the webbing passage 212C is opened. The seat belt webbing 5 can move freely through the webbing channel 212C.

Hereinafter, a safety belt self-locking tongue 1001 according to the second embodiment of the present disclosure will be described with reference to FIGS. 7 and 8. The seat belt self-locking bolt 1001 will be marked with the reference number in the seat belt self-locking bolt 1 plus 1000 to indicate the same or similar structure.

As shown in FIGS. 7 and 8, the safety belt self-locking bolt 1001 includes a bolt body 1002, and a revolving body 1003 and a reset member 1004 provided on the bolt body 1002. The webbing portion 1021 of the bolt body 1002 is slidably connected to the seat belt webbing 5, and the mortise lock portion 1022 can be removably inserted into the seat belt mortise lock (not shown). The lower surface 1003B of the revolving body 1003 is rotatably supported on the arc-shaped protrusion 1215 of the bolt body 1002, and the upper surface 1003T can slide along the upper surface 1212T of the horizontal opening 1212 of the webbing portion 1021 to rotate from the initial position to In the locked position, the seat belt webbing 5 is clamped and locked together with the lower surface 1212B of the horizontal opening 1212. The resetting member 1004 is disposed in the through hole 1031 of the revolving body 1003, and is used to reset the revolving body 1003 from the locked position to the initial position.

The difference between the seat belt self-locking bolt 1001 and the seat belt self-locking bolt 1 lies in the position and shape of the through hole 1031 of the revolving body 1003. The through hole 1031 is located at the front part of the bolt body 1002 instead of the rear part. The shape of the through hole 1031 is not a regular waist shape. Compared with the through hole 31 of the seat belt self-locking tongue 1, there is a relatively short one at the end of the waist shape that forms a certain angle (for example, 15 degrees) with the main waist. The curvature of the branch part 1031A, the outer contour of the branch part 1031A is approximately the same as the upper curved surface 1003T of the revolving body 1003, so as to ensure that the resetting part 1004 has enough space to compress during the process of turning the revolving body from the initial position to the locked position to ensure that the resetting part 1004 The movement trajectory of is consistent with the movement trajectory of the revolving body 1003 to prevent jamming during the movement.

In an embodiment, the bolt body, the reset member and the revolving body may be made of metal.

According to an embodiment of the present disclosure, a safety belt self-locking bolt with a locking function is provided, which can realize the locking function of the safety belt webbing.

The seat belt self-locking tongue according to the embodiment of the present disclosure uses an arc-shaped protrusion instead of a rotating shaft to support the revolving body, and has a simple structure and is convenient for processing and assembly.

According to the self-locking bolt of the safety belt of the embodiment of the present disclosure, the reset piece is installed into the revolving body from the side, and the side cover is omitted, thereby reducing the number of parts, reducing the weight of the product, facilitating processing and assembly, and making the product comparable to similar products. China is more competitive in the market.

Although the exemplary embodiments of the present disclosure have been described, those skilled in the art should understand that various changes and changes can be made to the exemplary embodiments of the present disclosure without substantially departing from the spirit and scope of the present disclosure. Therefore, all changes and changes are included in the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

A self-locking bolt for a safety belt, characterized in that the self-locking bolt for a safety belt comprises:

A main body of the bolt, the main body of the bolt having a horizontal opening through which the webbing of the safety belt passes;

A revolving body supported near the horizontal opening of the bolt body and capable of rotating between an initial position and a locked position, the revolving body having a through hole located inside the revolving body, the through hole is only from the revolving body Openings on the left and right side surfaces; and

The resetting member is disposed in the through hole of the revolving body and configured to bias the revolving body to an initial position.
The safety belt self-locking bolt according to claim 1, wherein the bolt body is provided with a left support portion and a right support portion on the left and right sides of the horizontal opening, and the left support portion and the right support portion are It is configured to support the revolving body.
The safety belt self-locking bolt according to claim 1 or 2, wherein the resetting member is arranged to pass through the through hole of the left support part, the through hole of the revolving body, and the through hole of the right support part.
The safety belt self-locking bolt according to claim 2, wherein the restoring member is substantially linear, and the central part has one or more wavy parts.
The safety belt self-locking tongue according to claim 4, wherein the height of the wave-shaped part is greater than the height of the through hole of the revolving body, and the wave-shaped part is assembled in the through hole of the revolving body in a pre-compressed manner.
The safety belt self-locking tongue according to claim 4, wherein one end of the resetting member has a limiting portion, and the limiting portion is configured to be connected to one of the left support portion and the right support portion. The upper limit slot matches.
The safety belt self-locking bolt according to claim 6, wherein the limiting portion is substantially hook-shaped.
The safety belt self-locking bolt according to claim 6, wherein the limiting groove is provided on the horizontal outer side of the through hole of the one supporting part.
The safety belt self-locking tongue according to claim 6, wherein the wave-shaped portion of the reset member and the limiting portion are at a certain angle, and the limiting groove of the one supporting portion and the communicating portion of the one supporting portion are at an angle. The holes are at the same angle.
The safety belt self-locking bolt according to claim 6, wherein the shape of the through hole of the one supporting portion and the through hole of the revolving body are the same.
The seat belt self-locking tongue according to claim 2, wherein the revolving body is substantially C-shaped and includes an upper curved surface, a lower curved surface, a front surface, a rear surface, and a connection between the upper curved surface, the lower curved surface, the front surface and The left side surface and the right side surface of the rear surface.
The safety belt self-locking tongue according to claim 11, wherein the through hole of the revolving body is located at the rear part of the revolving body and is approximately waist-shaped.
The safety belt self-locking tongue according to claim 12, wherein in the cross section along the front and rear direction, the curvature of the outer contour of the through hole of the revolving body and the curvature of the upper curved surface of the revolving body remain substantially the same.
The safety belt self-locking tongue according to claim 11, wherein the through hole of the revolving body is located at the front part of the revolving body, and is approximately in the shape of a waist with a branch at the end.
The seat belt self-locking tongue according to claim 14, characterized in that, in the cross section along the front-rear direction, the curvature of the outer contour of the branch portion of the through hole of the revolving body is substantially the same as the upper curved surface of the revolving body.
The safety belt self-locking tongue according to claim 11, wherein the left support portion and the right support portion are provided with arc-shaped protrusions protruding inward in the horizontal direction, and the revolving body is supported in the arc-shaped On the protrusion and can rotate around the arc-shaped protrusion.
The seat belt self-locking tongue according to claim 16, characterized in that the lower curved surface of the revolving body fits with the upper surface of the arc-shaped protrusion, so that the lower curved surface of the revolving body can surround the upper surface of the arc-shaped protrusion. Rotate between the initial position and the locked position.
The safety belt self-locking tongue according to claim 16, characterized in that the upper curved surface of the revolving body fits with the upper surface of the horizontal opening, so that when the revolving body bulges around an arc between the initial position and the locked position When rotating, the upper curved surface of the revolving body can slide along the upper surface of the horizontal opening.
The safety belt self-locking bolt according to claim 18, wherein the upper surface of the horizontal opening is in a convex arc shape.
The safety belt self-locking bolt according to claim 16, wherein the revolving body is configured to rotate in the channel formed by the upper surface of the horizontal opening and the upper surface of the arc-shaped protrusion.
The seat belt self-locking tongue according to claim 11, wherein the rear surface of the revolving body abuts on the seat belt webbing, so that the movement of the seat belt webbing can drive the revolving body to rotate from the initial position to the locked position.
The seat belt self-locking tongue according to claim 11, wherein a webbing channel for the seat belt webbing to pass is formed between the front surface of the revolving body and the lower surface of the horizontal opening, wherein the revolving body is in the initial position When the front surface of the revolving body and the lower surface of the horizontal opening are separated by a certain distance, and when the revolving body is in the locked position, the front surface of the revolving body and the lower surface of the horizontal opening clamp the seat belt webbing together.
The safety belt self-locking tongue of claim 22, wherein one or more teeth are provided on the front surface of the revolving body and/or the lower surface of the horizontal opening.
The safety belt self-locking bolt according to claim 1 or 2, characterized in that the bolt body, the reset piece and the revolving body are made of metal.