CN219565020U

CN219565020U - Holding mechanism and automobile safety belt pre-tightening device provided with same

Info

Publication number: CN219565020U
Application number: CN202320088008.2U
Authority: CN
Inventors: 胡晏殊; 王传旭; 荆永利; 关俊峰; 宫良杰
Original assignee: Shenyang Jinbei Jinheng Automotive Safety System Co ltd
Current assignee: Shenyang Jinbei Jinheng Automotive Safety System Co ltd
Priority date: 2023-01-30
Filing date: 2023-01-30
Publication date: 2023-08-22
Anticipated expiration: 2033-01-30

Abstract

The utility model discloses a retaining mechanism and an automobile safety belt pre-tightening device provided with the same, wherein the retaining mechanism comprises a connecting piece, a clamping seat which is matched with the connecting piece, and a fixed retaining ring which is arranged at the joint of the connecting piece and the clamping seat; one end of the connecting piece is inserted into the clamping seat, a plurality of connecting holes are formed in the connecting piece, a plurality of clamping protrusions are formed on the clamping seat, and one clamping protrusion is correspondingly clamped in one connecting hole; after the clamping convex is aligned and spliced with the connecting hole, a fixed retaining ring is wound around the periphery of the spliced position, and the inner wall of the fixed retaining ring is abutted with the end face of the clamping convex so as to realize the fixed retaining of the connecting piece. After the retaining mechanism provided by the utility model is applied, no matter the clamping seat and the connecting piece are realized through elastic deformation or plastic deformation in the process of clamping, the effective connecting part of the clamped connecting piece can be fixedly retained through the fixed retaining ring, so that the clamping seat and the connecting piece cannot be outwards opened.

Description

Holding mechanism and automobile safety belt pre-tightening device provided with same

Technical Field

The utility model relates to the technical field of automobile safety belt pretensioning devices, in particular to a retaining mechanism for an automobile safety belt pretensioning device.

Background

In order to better ensure the safety of passengers, a plurality of safety arrangements, such as a safety belt pretensioner, are additionally arranged on the automobile. The safety belt pretensioner has the function of pretensioning the safety belt, a pretensioner is additionally arranged on the traditional safety belt, and when an automobile collides, the pretensioner can sense external impact force and send signals to all parts through gas generating agents and the like, so that the safety belt is tensioned instantaneously. The principle of realizing the pre-tightening function of the safety belt is mainly that the safety airbag sends a pre-tightening ignition signal to each part, gunpowder in the pre-tightening igniter can be ignited after receiving the signal and generates a large amount of high-pressure gas as power to push the elastic shaft to rotate, so that the safety belt is tensioned, the distance between the safety belt and a human body can be effectively eliminated, and passengers can be firmly fixed on a seat.

The webbing provided with the webbing pretensioner may be referred to as a pretensioner webbing, and the retractor has a function of reinforcing the restraining force of the occupant in about 0.1 seconds when the vehicle speed changes sharply, in addition to the webbing retraction function, and therefore has a control device and a pretensioner device. The action process is as follows: firstly, a probe is responsible for collecting collision information, then an electric pulse is released, the pulse is transmitted to a gas generator to detonate gas, the gas generated by explosion rapidly expands in a pipeline and presses a ball chain, so that balls move forward in the pipeline to drive a pawl disc to rotate, and a section of cavity is arranged at the tail end of the pipeline and used for accommodating the rolled balls; the pawl disc is connected with the shaft into a whole, and the safety belt is wound on the shaft. The whole process is that the ball is driven by the air pressure, the ball drives the pawl disc to rotate, the pawl disc drives the shaft to rotate, and the pre-tightening function of the safety belt is realized at one instant.

The prior safety belt pre-tightening device is also provided with a clamping and holding structure, the prior clamping and holding structure is fixed by only clamping the deformation of the connecting plate into the protruding structure, and if the deformation generated in the clamping process of the connecting plate is in the elastic deformation range of the self material, the clamping and holding structure still has a certain holding force on the clamping state of the protruding part by the self elasticity after being clamped; however, if the deformation of the connecting plate during the clamping process exceeds the elastic deformation of the material, and then the clamping is performed through plastic deformation, the connecting plate is seriously deformed in practice, and is easy to disengage after the connection, so that the problem of the clamping and holding structure made of metal materials is particularly remarkable.

Therefore, a new solution is needed to solve the problems existing in the prior art.

Disclosure of Invention

The utility model provides a retaining mechanism and an automobile safety belt pre-tightening device provided with the same, and aims to solve the problems that a clamping retaining structure applied to the safety belt pre-tightening device at present causes connection to be unstable and easy to loosen under the condition of plastic deformation of the clamping retaining structure.

In order to achieve the above object, the present utility model provides the following technical solutions:

in one aspect, the utility model provides a retaining mechanism for an automobile safety belt pretensioning device, comprising a connecting piece, a clamping seat which is installed in an adapting way with the connecting piece, and a fixed retaining ring which is arranged at the joint of the connecting piece and the clamping seat;

one end of the connecting piece is inserted into the clamping seat, a plurality of connecting holes are formed in the connecting piece, a plurality of clamping protrusions are formed on the clamping seat, and one clamping protrusion is correspondingly clamped in one connecting hole; after the clamping protrusion is aligned and spliced with the connecting hole, the periphery of the spliced position is wound with the fixed retainer ring, and the inner wall of the fixed retainer ring is abutted with the end face of the clamping protrusion so as to realize the fixed retention of the connecting piece.

According to the technical scheme, the connecting piece is a strip-shaped structural piece, and the connecting hole is close to the end part of the connecting piece.

Further, the clamping seat is a columnar structural member, two through holes are formed in the clamping seat, the two through holes are arranged adjacently, and the central axis of each through hole is parallel to the central axis of the clamping seat.

Further, the connecting piece comprises two strip-shaped sheet bodies which are oppositely arranged, and two ends of each sheet body are respectively provided with one connecting hole.

Further, two grooves are oppositely formed in the side wall of the clamping seat, the clamping protrusions are protrusions extending upwards from the bottoms of the grooves, and the end faces of the clamping protrusions are basically flush with the side wall of the clamping seat.

Further, the end of the sheet body is provided with a clamping piece matched with the groove, the clamping piece is provided with a connecting hole matched with the clamping protrusion, the shape of the clamping piece is matched with that of the groove, and the thickness of the clamping piece is smaller than or equal to the depth of the groove.

Further, the fixed retaining ring is wound around the periphery of the clamping piece, and the shape of the cross section of the fixed retaining ring is matched with that of the clamping seat.

Further, a positioning piece matched with the end face of the fixed retaining ring is arranged on the connecting piece or the clamping seat, and when the fixed retaining ring is sleeved on the clamping seat, the positioning piece forms a positioning structure of the fixed retaining ring; the locating piece comprises a stop block arranged on the outer wall of the connecting piece or the clamping seat.

On the other hand, based on the retaining mechanism for the automobile safety belt pre-tightening device, the utility model further provides the automobile safety belt pre-tightening device.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a retaining mechanism for an automobile safety belt pre-tightening device, which comprises a connecting piece, a clamping seat and a fixed retaining ring, wherein the clamping seat is installed in an adapting way with the connecting piece, the fixed retaining ring is arranged at the joint of the connecting piece and the clamping seat, the connecting piece and the clamping seat are in opposite connection through a connecting hole and a clamping bulge, the inner wall of the fixed retaining ring is abutted with the end face of the clamping bulge so as to realize the fixed retaining of the connecting piece. After the retaining mechanism provided by the utility model is applied, no matter the clamping seat and the connecting piece are realized through elastic deformation or plastic deformation in the process of clamping, the effective connecting part of the clamped connecting piece can be fixedly retained through the fixed retaining ring, so that the clamping seat and the connecting piece cannot be outwards opened.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. It should be understood that the specific shape and configuration shown in the drawings are not generally considered limiting conditions in carrying out the utility model; for example, those skilled in the art will be able to make routine adjustments or further optimizations for the addition/subtraction/attribution division, specific shapes, positional relationships, connection modes, dimensional proportion relationships, and the like of certain units (components) based on the technical concepts and the exemplary drawings disclosed in the present utility model.

Fig. 1 is a schematic structural view of a cylindrical clamping and holding mechanism for an automobile safety belt pretensioning device under a view angle, wherein a connecting plate of the clamping and holding mechanism and an opponent piece are combined in a para-position and plug-in manner;

FIG. 2 is a schematic structural view of a retaining mechanism for an automobile seat belt pretensioner according to an embodiment of the present utility model in a combined state, the retaining mechanism being illustrated as a cylindrical structural design;

FIG. 3 is a schematic structural view of a holding mechanism for an automobile seat belt pretensioner according to an embodiment of the present utility model in a combined state, the holding mechanism being shown as a plate-like structural design;

FIG. 4 is a schematic view of a retaining mechanism for an automobile seat belt pretensioner according to an embodiment of the present utility model in a structure disassembled state;

FIG. 5 is a schematic view of a structure of a connector for a retaining mechanism of an automobile seat belt pretensioner according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a connector for a retention mechanism of an automobile seat belt pretensioner according to an embodiment of the present utility model in another view;

FIG. 7 is a schematic view of a structure of a clamping seat of a retaining mechanism for an automobile seat belt pretensioner according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a structure of a clamping seat of a retaining mechanism for an automobile seat belt pretensioner according to an embodiment of the present utility model in another view;

fig. 9 is a schematic structural view of a clamping seat of a retaining mechanism for an automobile seat belt pretensioner according to an embodiment of the present utility model in still another view.

Reference numerals illustrate:

01. a connecting plate; 02. an opponent;

1. a connecting piece; 11. a connection hole; 12. a clamping piece;

2. a clamping seat; 21. a clamping protrusion; 22. a groove; 23. a through hole;

3. fixing the retainer ring.

Detailed Description

The utility model will be further described in detail by means of specific embodiments with reference to the accompanying drawings.

In the description of the present utility model: unless otherwise indicated, the meaning of "a plurality" is two or more. The terms "first," "second," "third," and the like in this disclosure are intended to distinguish between the referenced objects without a special meaning in terms of technical connotation (e.g., should not be construed as emphasis on the degree of importance or order, etc.). The expressions "comprising", "including", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

The terms such as "upper", "lower", "left", "right", "middle", etc. are generally used herein for convenience of visual understanding with reference to the drawings and are not to be construed as absolute limitations on the positional relationship of the actual product. Such changes in the relative positional relationship without departing from the technical idea of the present utility model are also considered as the scope of the present utility model.

Example 1

The prior clamping and holding mechanism for the automobile safety belt pre-tightening device comprises a connecting plate and an opponent piece. Referring to fig. 1, a general cylindrical clamping structure design is taken as an example for illustration, two clamping structures are symmetrically formed on the common cylindrical clamping structure, holes are formed on a connecting plate 01, protrusions are formed on a hand piece 02, and clamping and fixing are performed through deformation of the connecting plate 01. The clamping structure is fixed by only clamping the deformation of the connecting plate into the protruding structure, and if the deformation of the connecting plate in the clamping process is within the elastic deformation range of the self material, the clamping structure has a certain holding force on the clamping state of the protruding part by the self elasticity after being clamped; however, if the deformation of the connecting plate in the clamping process exceeds the elastic deformation of the material, and then the connecting plate is clamped through plastic deformation, the connecting plate is seriously deformed actually, and the connecting plate is easy to disconnect after being connected.

In order to solve the problems in the prior art, the utility model provides a retaining mechanism, which is provided with a fixed retaining ring, and a connecting piece cannot be separated through deformation after the fixed retaining ring is clamped, so that the whole clamping structure is more stable and can be used for a long time, and the retaining mechanism is shown in fig. 4.

Referring to fig. 2, the utility model provides a retaining mechanism for a pre-tightening device of an automobile safety belt, which comprises a connecting piece 1, a clamping seat 2 which is matched with the connecting piece 1, and a fixed retaining ring 3 which is arranged at the joint of the connecting piece 1 and the clamping seat 2. Specifically, one end of the connecting piece 1 is inserted into the clamping seat 2, a plurality of connecting holes 11 are formed in the connecting piece 1, a plurality of clamping protrusions 21 are formed in the clamping seat 2, and one clamping protrusion 21 is correspondingly clamped in one connecting hole 11; after the clamping convex 21 is aligned and spliced with the connecting hole 11, the periphery of the spliced position is wound with a fixed retainer ring 3, and the inner wall of the fixed retainer ring 3 is abutted with the end face of the clamping convex 21 so as to realize the fixed retention of the connecting piece 1.

In one embodiment, the connector 1 is an elongated structure, and the connection hole 11 is near the end of the connector 1. The clamping seat 2 is a columnar structural member, two through holes 23 are formed in the clamping seat 2, the two through holes 23 are adjacently arranged, and the central axis of the through hole 23 is parallel to the central axis of the clamping seat 2.

In one embodiment, referring to fig. 2, the connector 1 comprises two elongated sheets disposed opposite each other, each of which is provided with a connecting hole 11 at both ends thereof. Two grooves 22 are oppositely arranged on the side wall of the clamping seat 2, the clamping convex 21 is a protrusion extending upwards from the bottom of the groove 22, and the end face of the clamping convex 21 is basically level with the side wall of the clamping seat 2. The end of the sheet body is provided with a clamping piece 12 matched with the groove 22, the clamping piece 12 is provided with a connecting hole 11 matched with the clamping convex 21, the shape of the clamping piece 12 is matched with the shape of the groove 22, and the thickness of the clamping piece 12 is smaller than or equal to the depth of the groove 22. The fixed retainer ring 3 is wound on the periphery of the clamping piece 12, and the shape of the cross section of the fixed retainer ring 3 is matched with that of the clamping seat 2.

The shapes of the connecting piece 1 and the clamping seat 2 provided by the utility model can be cylindrical or plate-shaped, as shown in fig. 3, and can be curved. Correspondingly, the holding mechanism consists of a connecting piece 1 and a clamping seat 2 with corresponding bulges, and the clamping surface can be formed by a cylinder, a plane, a curved surface and the like.

The fixing and holding ring 3 in the holding mechanism provided by the utility model is used for limiting the external expansion of the effective part of the connecting piece 1 for clamping through surface contact, so as to realize the fixing and holding of the connecting piece 1.

In one embodiment, the connecting piece 1 or the clamping seat 2 is provided with a positioning piece matched with the end face of the fixed retainer ring 3, and when the fixed retainer ring 3 is sleeved on the clamping seat 2, the positioning piece forms an in-place positioning structure of the fixed retainer ring 3; the positioning piece comprises a stop block arranged on the outer wall of the connecting piece 1 or the clamping seat 2.

The utility model provides a retaining mechanism for an automobile safety belt pre-tightening device, which comprises a connecting piece 1, a clamping seat 2 which is matched with the connecting piece 1, and a fixed retaining ring 3 which is arranged at the joint of the connecting piece 1 and the clamping seat 2, wherein the connecting piece 1 and the clamping seat 2 are in opposite-position insertion connection through a connecting hole 11 and a clamping protrusion 21, the inner wall of the fixed retaining ring 3 is abutted with the end face of the clamping protrusion 21 so as to realize fixed retaining of the connecting piece 1, and compared with the existing retaining mechanism for the automobile safety belt pre-tightening device, the retaining mechanism provided by the utility model is additionally provided with the fixed retaining ring 3, the connecting piece 1 can not be outwards opened after being clamped by forcing the fixed retaining ring 3, so that the fixed retaining ring can not fall off after being clamped, and the fixed state after being clamped can be effectively used for a long time.

Example two

Based on the retaining mechanism for the automobile safety belt pre-tightening device, the utility model further provides the automobile safety belt pre-tightening device. After the retaining mechanism provided by the utility model is applied, no matter the clamping seat 2 and the connecting piece 1 are realized through elastic deformation or plastic deformation in the process of clamping, the effective connecting part of the clamped connecting piece 1 can be fixedly retained through the fixed retaining ring 3, so that the clamping seat and the connecting piece cannot be outwards opened, and the application effect is met.

Any combination of the technical features of the above embodiments may be performed (as long as there is no contradiction between the combination of the technical features), and for brevity of description, all of the possible combinations of the technical features of the above embodiments are not described; these examples, which are not explicitly written, should also be considered as being within the scope of the present description.

The utility model has been described above with particularity and detail in connection with general description and specific embodiments. It should be understood that numerous conventional modifications and further innovations may be made to these specific embodiments, based on the technical concepts of the present utility model; but these conventional modifications and further innovations may also fall within the scope of the claims of the present utility model as long as they do not depart from the technical spirit of the present utility model.

Claims

1. The retaining mechanism for the automobile safety belt pre-tightening device is characterized by comprising a connecting piece, a clamping seat and a fixed retaining ring, wherein the clamping seat is installed in an adapting mode with the connecting piece, and the fixed retaining ring is arranged at the joint of the connecting piece and the clamping seat;

2. The retention mechanism for a vehicle seat belt pretensioner according to claim 1, wherein the connector is an elongated structural member, the connector hole being adjacent an end of the connector;

the clamping seat is a columnar structural member, two through holes are formed in the clamping seat and are arranged adjacently, and the central axis of each through hole is parallel to the central axis of the clamping seat.

3. The retaining mechanism for a pretensioner of automotive seat belt according to claim 1 or 2, wherein the connecting member includes two elongated sheet bodies disposed opposite each other, each sheet body being provided at both ends thereof with one of the connecting holes, respectively;

two grooves are oppositely formed in the side wall of the clamping seat, the clamping protrusions are protrusions extending upwards from the bottoms of the grooves, and the end faces of the clamping protrusions are basically flush with the side wall of the clamping seat.

4. A retaining mechanism for a pretensioning device for automotive seat belts according to claim 3, wherein the end portion of the sheet body is formed with a click piece that is fitted to the groove, the click piece is formed with a connection hole that is fitted to the click projection, the click piece is shaped to fit the shape of the groove, and the click piece has a thickness that is less than or equal to the depth of the groove.

5. The retaining mechanism for a pretensioning device for a motor vehicle seat according to claim 4, wherein the fixing retaining ring is provided around the periphery of the clip piece, and the fixing retaining ring is adapted to the shape of the cross section of the clip seat.

6. The retaining mechanism for a pretensioning device for automotive seat belt according to claim 5, wherein a positioning member that is fitted to an end face of the fixed retainer ring is provided on the connecting member or the clip seat, the positioning member forming an in-place positioning structure of the fixed retainer ring when the fixed retainer ring is snared on the clip seat; the locating piece comprises a stop block arranged on the outer wall of the connecting piece or the clamping seat.

7. An automobile seat belt pretensioner comprising the retaining mechanism according to any one of claims 1 to 6.