CN116331145A - Compact car safety belt takes tight device - Google Patents

Abstract

The invention belongs to the technical field of automobile safety, and particularly relates to a compact automobile safety belt tightening device, which comprises a safety belt, a safety belt eye-splice, a safety belt socket, a piston connecting rod piece, a cylinder body, a cylinder end cover, an ignition device and explosive; the outer contour of the piston part of the piston connecting rod part consists of a locking surface, a radial impact surface, an axial impact surface, a guide surface, zhang Jinmian and a lower end surface, wherein the radial impact surface, the axial impact surface and the inner cavity surface of the cylinder body form a combustion cavity; the combustion chamber is internally provided with a firing device and explosive, and the firing device is electrically connected with the automobile control unit; zhang Jinmian working cavities are formed on the lower end face, the inner cavity face of the cylinder body and the inner conical face of the cylinder end cover. The automobile safety belt tightening device is compact in structure and convenient to quantitatively produce and widely apply.

Description

Compact car safety belt takes tight device

Technical Field

The invention belongs to the technical field of automobile safety, and particularly relates to a compact automobile safety belt tightening device.

Background

When a car encounters a serious collision or rollover accident, a driver or a passenger bound on a car seat keeps on the original movement trend and generates very large inertia, and in this case, a part of a traditional car safety belt is dragged out due to the fact that the traditional car safety belt bears a large pulling force, and meanwhile, the safety belt is deformed to a certain extent, so that a gap between the driver or the passenger and a backrest of the seat is increased, and secondary injury is possibly caused to the driver or the passenger.

In order to solve the above-mentioned problems, the inventor has desired to design a compact car safety belt tightening device which further tightens the safety belt by momentarily pulling down the safety belt socket when the car encounters a serious collision or rollover accident, and attaches the driver or passenger to the seat back tightly to improve the safety of the driver or passenger, while the device is compact in structure, convenient in installation, low in cost, reliable in execution, and convenient in quantitative production and general application.

Disclosure of Invention

The present invention has been made to overcome the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a compact car safety belt tightening device.

In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:

a compact car safety belt tightening device comprises a safety belt, a safety belt eye-splice, a safety belt socket, a piston link member, a cylinder body, a cylinder end cover, an ignition device and explosive;

the safety belt buckle is provided with a mounting hole which is convenient for mounting the safety belt, the safety belt buckle is matched with a safety belt socket, and the safety belt socket can realize the locking and releasing functions of the safety belt buckle;

the safety belt socket is rigidly connected with the tail part of the connecting rod of the piston connecting rod piece; the piston part of the piston link rod piece is arranged in a cylinder body, the cylinder body is rigidly connected with the seat metal framework, and a cylinder end cover is arranged at the lower end of the cylinder body;

the outer contour of the piston part of the piston link member is composed of a locking surface, a radial impact surface, an axial impact surface, a guide surface, zhang Jinmian and a lower end surface, wherein the locking surface limits the axial displacement of the piston link member in an initial state, the radial impact surface and the axial impact surface can resist the gas pressure generated when explosive is exploded in an excited state, the guide surface can guide the piston link member to perform linear displacement movement in the excited state, and the Zhang Jinmian can form interference fit with the inner conical surface of the cylinder end cover after the excited state;

in an initial state, a combustion cavity is formed on the radial impact surface, the axial impact surface and the inner cavity surface of the cylinder body of the piston connecting rod piece piston part; the combustion chamber is internally provided with a firing device and explosive, and the firing device is electrically connected with the automobile control unit; in the initial state, a working cavity is formed by Zhang Jinmian of the piston part of the piston connecting rod piece, the lower end surface, the inner cavity surface of the cylinder body and the inner cone surface of the cylinder end cover.

Furthermore, in the compact automobile safety belt tightening device, the cross section of the connecting rod is rectangular, and the rectangular cross section of the connecting rod can limit torsion generated when the piston connecting rod piece moves in an excited state, so that the safety belt is prevented from twisting due to synchronous torsion of the safety belt buckle and the piston connecting rod piece.

Further, in the compact car seat belt tightening device, the radial impact surface and the axial impact surface can improve the structural strength of the compact car seat belt tightening device by means of metal accumulation.

Further, in the compact car seat belt tightening device, the signal line through hole is formed in the upper end of the cylinder body, and the ignition device is electrically connected with the car control unit through the signal line through hole.

Further, in the compact car safety belt tightening device, the lower end of the cylinder body is provided with a plurality of pressure relief holes, and the pressure relief holes can release the gas pressure in the combustion cavity when in an excited state.

Further, in the compact car seat belt tightening device, the combustion chamber is in a hollow cylindrical shape, the ignition device and the explosive are in a ring shape according to the shape of the combustion chamber, and the main component of the explosive is trinitrotoluene.

Further, in the compact car seat belt tightening device, the conical angle α of the tightening surface is slightly larger than the conical angle β of the inner conical surface of the cylinder end cover, and the Zhang Jinmian and inner conical surfaces are roughened.

Further, in the compact automobile safety belt tightening device, the lower end of the cylinder end cover is provided with the exhaust hole, and the exhaust hole can remove air in the working cavity when in an excited state.

Further, in the compact car seat belt tightening device, both the connecting rod surface and the guide surface are coated with a smooth wear-resistant coating.

Further, in the compact automobile safety belt tightening device, the safety belt is made of terylene, polypropylene or nylon materials, and the piston link member is made of medium carbon steel materials; the cylinder body and the cylinder end cover are made of carbon steel or stainless steel.

The beneficial effects of the invention are as follows:

when the automobile encounters a serious collision or rollover accident, a driver or a passenger bound on the automobile seat can keep the original movement trend and generate very large inertia, and under the condition, the traditional automobile safety belt can bear a large tensile force to be dragged out of a part, and meanwhile, the safety belt can deform to a certain extent, so that the length of the safety belt under the binding condition is further increased, the gap between the driver or the passenger and the seat backrest is increased, and secondary injury can be brought to the driver or the passenger. Therefore, the invention provides the compact automobile safety belt tightening device, which further tightens the safety belt by pulling the safety belt socket downwards instantaneously when an automobile encounters a serious collision or rollover, and tightly attaches a driver or a passenger to the seat backrest so as to improve the safety of personnel in the automobile.

Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of 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 invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a left side view of the present invention in an initial state;

FIG. 2 is a schematic cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic illustration of a piston link member configuration;

FIG. 4 is a bottom view of the present invention;

FIG. 5 is a front view of the present invention in an initial state;

FIG. 6 is a schematic cross-sectional view taken along the direction B-B in FIG. 5;

FIG. 7 is a front cross-sectional view of the present invention in an activated state;

FIG. 8 is a schematic cross-sectional view taken along the direction C-C in FIG. 7;

FIG. 9 is a schematic diagram of the operation principle of the electric control system of the present invention;

in the drawings, the components represented by the respective reference numerals are as follows:

1-seat belt socket, 1 a-seat belt buckle, 1 b-seat belt, 2-piston link member, 2 a-link, 2 b-locking face, 2 c-radial impact face, 2 d-axial impact face, 2 e-guiding face, 2 f-Zhang Jinmian, 2 g-lower end face, 3-cylinder block, 3 a-signal line through hole, 3 b-pressure relief hole, 4-cylinder end cover, 4 a-exhaust hole, 4 b-internal conical surface, 5-ignition device, 6-explosive, 6 a-gas pressure, 7-combustion chamber, 8-working chamber.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-9, the present embodiment provides a compact car safety belt tightening device, which mainly comprises a safety belt 1b, a safety belt buckle 1a, a safety belt socket 1, a piston link member 2, a cylinder block 3, a cylinder end cover 4, an ignition device 5, and an explosive 6. The safety belt 1b is made of terylene, polypropylene or nylon, and the safety belt 1b penetrates through the mounting hole on the safety belt eye-splice 1 a; the safety belt eye-splice 1a is matched with the safety belt jack 1, the safety belt jack 1 can realize the locking and releasing functions of the safety belt eye-splice 1a, and the safety belt jack 1 is of a common market structure. The safety belt socket 1 is rigidly connected with the tail part of the connecting rod 2a of the piston connecting rod piece 2, the cross section of the connecting rod 2a is rectangular, the rectangular cross section of the connecting rod 2a limits torsion generated when the piston connecting rod piece 2 moves in an excited state, and the safety belt 1b is prevented from twisting due to synchronous torsion of the safety belt buckle 1a along with the piston connecting rod piece 2.

In the present embodiment, the piston portion of the piston link member 2 is installed in the cylinder block 3, and the outer contour of the piston portion of the piston link member 2 is constituted by the lock surface 2b, the radial impact surface 2c, the axial impact surface 2d, the guide surface 2e, the tension surface 2f, and the lower end surface 2 g. The locking surface 2b restricts axial displacement of the piston-link member 2 in the initial state, and the radial impact surface 2c and the axial impact surface 2d resist the gas pressure 6a generated when the explosive 6 explodes in the excited state.

In this embodiment, the radial impact surface 2c and the axial impact surface 2d are designed to be thick, and the strength of the radial impact surface 2c and the axial impact surface 2d is enhanced by metal deposition, and the guide surface 2e guides the linear movement of the piston link member 2 in the excited state.

In this embodiment, zhang Jinmian f forms an interference fit with the inner conical surface 4b of the cylinder end cover 4 after being excited, the surface of the connecting rod 2a and the guiding surface 2e are coated with a smooth wear-resistant coating, and the piston connecting rod 2 is made of medium carbon steel.

In the present embodiment, in the initial state, the radial impact surface 2c and the axial impact surface 2d of the piston portion of the piston link member 2 and the inner cavity surface of the cylinder block 3 form the combustion chamber 7; the combustion chamber 7 is in a hollow cylindrical shape, and further, the combustion chamber 7 is internally provided with a firing device 5 and an explosive 6, the firing device 5 and the explosive 6 are in a ring shape according to the shape of the combustion chamber 7, and the main component of the explosive 6 is trinitrotoluene.

In the embodiment, a cylinder body 3 is rigidly connected with a seat metal framework, a signal wire through hole 3a is formed in the upper end of the cylinder body 3, a lighting device 5 is electrically connected with an automobile control unit through the signal wire through hole 3a, four pressure relief holes 3b are formed in the lower end of the cylinder body 3, and the pressure relief holes 3b can release gas pressure 6a in a combustion cavity 7 in an excited state; the lower end of the cylinder body 3 is provided with external threads which are matched with internal threads arranged at the upper end of the cylinder end cover 4.

In the embodiment, in the initial state, a working cavity 8 is formed by a tensioning surface 2f and a lower end surface 2g of a piston part of the piston link member 2, an inner cavity surface of the cylinder body 3 and an inner conical surface 4b of the cylinder end cover 4; zhang Jinmian 2f is slightly larger than the angle α of the inner tapered surface 4b of the cylinder head 4, and the tensioning surface 2f and the inner tapered surface 4b are roughened.

In this embodiment, the lower end of the cylinder end cover 4 is provided with an exhaust hole 4a, and the exhaust hole 4a can exhaust air in the working cavity 8 when in an excited state; the cylinder block 3 and the cylinder head cover 4 are made of carbon steel or stainless steel.

The working principle of the invention is as follows:

when the automobile is in a normal running state, the device is in an initial state, as shown in fig. 1, 2 and 9, when serious collision or rollover accidents do not occur, the sensor (comprising a collision sensor, an edge sensor and a rollover sensor) does not generate an electric signal, the control unit does not activate the ignition device 5, the explosive 6 is not ignited, the safety belt plug 1a is inserted into the safety belt plug 1 because the safety belt plug 1 is rigidly connected with the tail part of the connecting rod 2a of the piston connecting rod 2, the safety belt 1b penetrates through the mounting hole on the safety belt plug 1a, the piston connecting rod 2, the safety belt plug 1a and the safety belt 1b form a transmission chain, further, the locking surface 2b limits the axial displacement of the piston connecting rod 2 in the initial state, the cylinder body 3 is rigidly connected with a seat metal framework, and a good binding effect can be played for a driver or a passenger in the automobile when the safety belt 1b is tied.

When the automobile is in a serious collision or side-turning state, as shown in fig. 7 and 9, the sensor generates an electric signal and transmits the electric signal to the control unit, the control unit actuates the ignition device 5 to ignite the explosive 6, the generated gas pressure 6a pushes the piston link member 2 to do work downwards, the gas pressure 6a is released through the four pressure release holes 3b in the excited state, the movement track of the piston link member 2 is limited by the position relation of the guide surface 2e and the inner cavity surface of the cylinder body 3 to do linear movement, the piston link member 2, the safety belt socket 1, the safety belt buckle 1a and the safety belt 1b sequentially form a transmission chain, and the safety belt 1b is synchronously driven to move downwards through the transmission chain when the piston link member 2 moves downwards, so that the safety belt 1b is tensioned, and a bound driver or passenger is tightly attached to a backrest of the seat. Since the conical angle α of the tensioning surface 2f of the piston part of the piston link member 2 is slightly larger than the conical angle β of the inner conical surface 4b of the cylinder head cover 4, zhang Jinmian f is completely swept through the working chamber 8 from the initial position and forms an interference fit with the inner conical surface 4b under the action of the gas pressure 6a. Further, the tensioning surface 2f and the inner conical surface 4b are roughened, so that a great static friction force is generated between Zhang Jinmian f and the inner conical surface 4b, and the piston link member 2 is prevented from being separated from the cylinder end cover 4 due to the reverse acting force transmitted by the safety belt 1b, so that the safety of a driver or a passenger is improved.

Through the analysis of the working principles of the two scenes, the safety of a driver or a passenger in the vehicle can be improved, and meanwhile, the device has the advantages of compact structure, convenience in installation, low cost, reliability in execution and convenience in quantitative production and general application.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims (10)

1. A compact automotive safety harness device, characterized by: comprises a safety belt (1 b), a safety belt eye-splice (1 a), a safety belt socket (1), a piston link member (2), a cylinder body (3), a cylinder end cover (4), an ignition device (5) and an explosive (6);

the safety belt buckle (1 a) is provided with a mounting hole for conveniently mounting the safety belt (1 b), the safety belt buckle (1 a) is matched with the safety belt socket (1), and the safety belt socket (1) can realize the locking and releasing functions of the safety belt buckle (1 a);

the safety belt jack (1) is rigidly connected with the tail part of a connecting rod (2 a) of the piston connecting rod piece (2); the piston part of the piston link member (2) is arranged in the cylinder body (3), the cylinder body (3) is rigidly connected with the seat metal framework, and a cylinder end cover (4) is arranged at the lower end of the cylinder body (3);

the outer contour of the piston part of the piston link member (2) is composed of a locking surface (2 b), a radial impact surface (2 c), an axial impact surface (2 d), a guide surface (2 e), a tensioning surface (2 f) and a lower end surface (2 g), wherein the locking surface (2 b) limits the axial displacement of the piston link member (2) in an initial state, the radial impact surface (2 c) and the axial impact surface (2 d) can resist the gas pressure (6 a) generated when an explosive (6) explodes in an excited state, the guide surface (2 e) can guide the piston link member (2) to perform linear displacement movement in the excited state, and the tensioning surface (2 f) can form interference fit with the inner conical surface (4 b) of the cylinder end cover (4) after the excited state;

in an initial state, a combustion chamber (7) is formed on the radial impact surface (2 c), the axial impact surface (2 d) and the inner chamber surface of the cylinder block (3) of the piston part of the piston link member (2); a firing device (5) and explosive (6) are arranged in the combustion chamber (7), and the firing device (5) is electrically connected with an automobile control unit; in an initial state, a working cavity (8) is formed by Zhang Jinmian (2 f) of a piston part of the piston link member (2), a lower end surface (2 g), an inner cavity surface of the cylinder block (3) and an inner cone surface (4 b) of the cylinder end cover (4).

2. The compact automotive safety belt tensioner as claimed in claim 1, wherein: the cross section of the connecting rod (2 a) is rectangular, and the rectangular cross section of the connecting rod (2 a) can limit the torsion generated when the piston connecting rod piece (2) moves in an excited state, so that the safety belt (1 b) is prevented from twisting due to synchronous torsion of the safety belt eye-splice (1 a) along with the piston connecting rod piece (2).

3. The compact automotive safety belt tensioner as claimed in claim 2, wherein: the radial impact surface (2 c) and the axial impact surface (2 d) can improve the structural strength of the device by a metal stacking mode.

4. A compact automotive safety harness as claimed in claim 3, characterised in that: the upper end of the cylinder body (3) is provided with a signal wire through hole (3 a), and the ignition device (5) is electrically connected with the automobile control unit through the signal wire through hole (3 a).

5. The compact automotive safety belt tensioner as claimed in claim 4, wherein: the lower end of the cylinder body (3) is provided with a plurality of pressure relief holes (3 b), and the pressure relief holes (3 b) can release the gas pressure (6 a) in the combustion cavity (7) when in an excited state.

6. The compact automotive safety belt tensioner as claimed in claim 5, wherein: the combustion chamber (7) is in a hollow cylindrical shape, the ignition device (5) and the explosive (6) are annular according to the shape of the combustion chamber (7), and the main component of the explosive (6) is trinitrotoluene.

7. The compact automotive safety belt tensioner as claimed in claim 6, wherein: the conical surface angle alpha of the tensioning surface (2 f) is slightly larger than the conical surface angle beta of the inner conical surface (4 b) of the cylinder end cover (4), and the tensioning surface (2 f) and the inner conical surface (4 b) are subjected to roughening treatment.

8. The compact automotive safety belt tensioner as claimed in claim 7, wherein: the lower end of the cylinder end cover (4) is provided with an exhaust hole (4 a), and the exhaust hole (4 a) can exhaust air in the working cavity (8) when in an excited state.

9. The compact automotive safety belt tensioner as claimed in claim 1, wherein: the surface of the connecting rod (2 a) and the guide surface (2 e) are coated with a smooth wear-resistant coating.

10. The compact automotive safety belt tensioner as claimed in claim 1, wherein: the safety belt (1 b) is made of terylene, polypropylene or nylon, and the piston connecting rod piece (2) is made of medium carbon steel; the cylinder body (3) and the cylinder end cover (4) are made of carbon steel or stainless steel.

Images