Gas generator for side airbag

Abstract

The utility model discloses a gas generator for a side airbag, which comprises a tube body, gas generating powder is filled in the tube body, an ignition disc is fixedly connected in one end of the tube body, an ignition tube is fixedly connected in the middle of the ignition disc, a booster explosive cup is fixedly connected at one end, close to the ignition tube, in the tube body, and a booster explosive main body is filled in the booster explosive cup. A gas supply hole is formed in the end, far away from the ignition disc, of the pipe body, a gas injection assembly is arranged at the end, close to the flow guide cover, of the pipe body, the gas injection assembly is used for providing gas for the safety airbag, and the gas injection assembly comprises the flow guide cover. According to the utility model, through the integral structure matching, the gas after reaction can be guided, and multiple acceleration can be realized, so that the gas can be more quickly sent to the safety air bag, and the response speed of the safety air bag is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas generator, specifically is a kind of gas generator for side air bag. BACKGROUND

[0002] Automobile side air bag is a passive safety device, its main role is when vehicle side collision, for passenger to provide additional protection.Sidewall air bag is composed of multiple independent bags, respectively installed on the two sides of vehicle body, when vehicle detects side collision, gas generator in air bag will air bag expand and cover the side of passenger's body, to disperse and alleviate collision force, reduce the injury of side collision to passenger;

[0003] However, the gas generator for side air bag in the prior art lacks effective flow guide measures during the inflation process, so that the airflow is injected into the safety air bag, which is prone to delay, so that the safety air bag is difficult to respond quickly.

[0004] Therefore, the utility model provides a kind of gas generator for side air bag to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of gas generator for side air bag, solves the above problems.

[0006] To achieve the above object, the utility model is realized by the following technical scheme: a kind of gas generator for side air bag, including pipe body, the inside of pipe body is filled with gas generating agent, the inside of one end of pipe body is fixedly connected with ignition disc, the middle part of ignition disc is fixedly connected with ignition tube, the end of pipe body inside close to ignition tube is fixedly connected with booster cup, the inside of booster cup is filled with booster main body, the end of pipe body away from ignition disc is equipped with gas supply hole, the end of pipe body close to flow cover is provided with gas injection assembly, and the gas injection assembly is used to provide gas to safety air bag.

[0007] Preferably, the gas injection assembly includes a flow cover, a flow groove and a gas outlet hole, the outer side of the end of the pipe body close to the gas supply hole is equipped with a flow cover, a plurality of flow grooves are formed on the outer side of the flow cover, a plurality of gas outlet holes are formed between the two adjacent flow grooves, a quick mounting bolt is fixedly connected to the outer side of the pipe body and the outer side of the flow cover, a sealing rupture plate is fixedly connected to the inside of the flow cover, and the sealing rupture plate is in contact with the gas supply hole.

[0008] Preferably, the end of the pipe body inside close to the gas supply hole is fixedly connected with a gas generating agent cup, the gas generating agent cup is provided with a plurality of protrusions, and a plurality of gas distribution holes are formed on the outer wall of the gas generating agent cup between the two adjacent protrusions.

[0009] Preferably, the diameter of one end of the tube body is larger than the diameter of the other end.

[0010] Preferably, the flow guide cover and the tube body are connected by welding.

[0011] Preferably, a plurality of avoiding holes are formed in one end of the booster cup, and the avoiding holes are communicated with the inner cavity of the booster cup.

[0012] Preferably, the air outlet hole is a strip-shaped through hole.

[0013] Preferably, the cross section of the gas generating cup is a flat-topped cone, and the end of the gas generating cup with smaller diameter faces the air supply hole.

[0014] Advantages

[0015] The utility model provides a kind of gas generator for side air bag. Compared with prior art, it has the following

[0016] Advantages:

[0017] The gas generator for side air bag, by the structure cooperation of whole, gas after reaction can be guided, and multiple acceleration is realized, so that gas can be more quickly sent to safety air bag, to speed up the response speed of safety air bag. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the schematic diagram of the utility model;

[0019] Figure 2 is the half cut structure schematic diagram of the utility model;

[0020] Figure 3 is the structure schematic diagram of the utility model injection assembly;

[0021] Figure 4 is the structure schematic diagram of the utility model gas generating cup.

[0022] In the drawing, 1, tube body;2, ignition disc;3, ignition tube;4, booster cup;5, booster main body;6, air supply hole;7, flow guide cover;8, flow guide groove;9, air outlet hole;10, quick mounting bolt;11, sealing rupture piece;12, gas generating cup;13, protrusion;14, gas distribution hole. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] Please refer to Figures 1-4 A gas generator for a side air bag, comprising a pipe body 1, the inside of the pipe body 1 is filled with a gas generating agent, the inside of one end of the pipe body 1 is fixedly connected with an ignition disc 2, the middle of the ignition disc 2 is fixedly connected with an ignition tube 3, one end of the inside of the pipe body 1 close to the ignition tube 3 is fixedly connected with a booster cup 4, the inside of the booster cup 4 is filled with a booster main body 5, one end of the pipe body 1 away from the ignition disc 2 is provided with a gas supply hole 6, one end of the pipe body 1 close to a flow deflector 7 is provided with a gas injection assembly, the gas injection assembly is used for providing gas for a safety air bag;

[0025] In more detail, the ignition tube 3 is a known technology in the technical field, which will not be described here;

[0026] In detail, one end of the pipe body 1 has a larger diameter than the other end, by changing the diameters of the two ends of the pipe body 1, when gas is generated in the pipe body 1, the gas can be quickly discharged through the gas supply hole 6, so as to break the sealing rupture piece 11;

[0027] The gas injection assembly comprises the flow deflector 7, a flow guide groove 8 and a gas outlet hole 9, the outside of one end of the pipe body 1 close to the gas supply hole 6 is assembled with the flow deflector 7, the outside of the flow deflector 7 is provided with a plurality of flow guide grooves 8, a plurality of gas outlet holes 9 are arranged between every two adjacent flow guide grooves 8, the outside of the pipe body 1 and the outside of the flow deflector 7 are fixedly connected with quick mounting bolts 10, the inside of the flow deflector 7 is fixedly connected with the sealing rupture piece 11, and the sealing rupture piece 11 is in contact with the gas supply hole 6;

[0028] One end of the inside of the pipe body 1 close to the gas supply hole 6 is fixedly connected with a gas generating agent cup 12, the gas generating agent cup 12 is provided with a plurality of protrusions 13, and a plurality of gas distribution holes 14 are arranged on the outer wall of the gas generating agent cup 12 between every two adjacent protrusions 13;

[0029] Further, the flow deflector 7 and the pipe body 1 are connected by welding;

[0030] Preferably, one end of the booster cup 4 is provided with a plurality of avoiding holes, and the avoiding holes are in communication with the inner cavity of the booster cup 4, by the arrangement of the avoiding holes, the gas can be transmitted when the booster main body 5 is burning;

[0031] Further, the gas outlet hole 9 is a strip-shaped through hole, by the arrangement of the strip-shaped through hole, the safety air bag can react more quickly;

[0032] Further, the gas generating cup 12 has a cross-sectional shape of a flat-topped cone, and the smaller-diameter end of the gas generating cup 12 faces the gas supply hole 6.

[0033] Meanwhile, the contents not described in detail in the specification are all the prior art known to those skilled in the art.

[0034] Working principle: first through the fastening bolt 10 is installed in the whole car side designated position and the air outlet hole 9 and the air bag connection, when the car side is collided, the car to the ignition tube 3 provides the signal, the ignition tube 3 will ignite the booster main body 5, using high temperature booster main body 5 heat generated gas, after the expansion of the gas through the gas generating cup 12, using the structure characteristics of the gas generating cup 12, can accelerate the flow of gas, the gas flow through the gas supply hole 6, on the sealed rupture disc 11 exert a thrust, until the sealed rupture disc 11 breakage, the final gas to the inside of the flow cover 7, and through the air outlet hole 9 into the air bag, make the air bag response.

[0035] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0036] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A gas generator for a side air bag, characterized by: The application relates to a gas production device, which comprises a tube body (1) filled with gas production medicine, an ignition disc (2) fixedly connected to one end of the tube body (1), an ignition tube (3) fixedly connected to the middle part of the ignition disc (2), an booster cup (4) fixedly connected to the end of the tube body (1) close to the ignition tube (3), a booster medicine main body (5) filled in the booster cup (4), a gas supply hole (6) arranged at the end of the tube body (1) away from the ignition disc (2), and a gas injection assembly arranged at the end of the tube body (1) close to a flow guide cover (7), which is used for providing gas for a safety air bag.

2. The inflator for side air bag according to claim 1, wherein: The gas injection assembly comprises the flow guide cover (7), flow guide grooves (8) and gas outlet holes (9), the outer side of the end of the tube body (1) close to the gas supply hole (6) is provided with the flow guide cover (7), the outer side of the flow guide cover (7) is provided with a plurality of flow guide grooves (8), a plurality of gas outlet holes (9) are arranged between two adjacent flow guide grooves (8), the outer side of the tube body (1) and the outer side of the flow guide cover (7) are fixedly connected with quick mounting bolts (10), the inner side of the flow guide cover (7) is fixedly connected with a sealing rupture piece (11), and the sealing rupture piece (11) is in contact with the gas supply hole (6).

3. The inflator for side air bag according to claim 1, wherein: The end of the tube body (1) close to the gas supply hole (6) is fixedly connected with a gas production medicine cup (12), the gas production medicine cup (12) is provided with a plurality of protrusions (13), and a plurality of gas distribution holes (14) are arranged on the outer wall of the gas production medicine cup (12) between two adjacent protrusions (13).

4. The inflator for side air bag according to claim 1, wherein: The diameter of one end of the tube body (1) is larger than that of the other end.

5. The inflator for side air bag according to claim 1, wherein: The flow guide cover (7) and the tube body (1) are connected through welding.

6. The inflator for side air bag according to claim 1, wherein: The end of the booster cup (4) is provided with a plurality of avoiding holes, and the avoiding holes are in communication with the inner cavity of the booster cup (4).

7. The inflator for side air bag according to claim 2, wherein: The gas outlet hole (9) is a strip-shaped through hole.

8. The inflator for side air bag according to claim 3, wherein: The cross section of the gas production medicine cup (12) is a flat-top conical shape, and the end of the gas production medicine cup (12) with a smaller diameter faces the gas supply hole (6). The end of the booster cup (4) is provided with a plurality of avoiding holes, and the avoiding holes are in communication with the inner cavity of the booster cup (4).

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