Front air bag capable of controlling unfolding form

Abstract

The utility model discloses a front airbag capable of controlling the unfolding form, which comprises a module shell, the module shell is provided with an airbag bag, two groups of drawstrings, a flow guide belt and an explosion generator, and the two groups of drawstrings are arranged on the same side of the module shell up and down; the flow guide belts are located in a first cavity formed by the two sets of pull belts and the air bag, the ends, close to the module shell, of the flow guide belts are connected with the module shell, and the ends, away from the module shell, of the flow guide belts are connected with the other set of flow guide belts in a sleeved mode through lantern rings. And the explosion generator is positioned in a second cavity formed by connecting the two groups of flow guide belts. According to the utility model, the explosion generator of the air bag is arranged in the air bag and is bound by the flow guide belt, so that heat and gas dissipation is effectively avoided, and the working efficiency of the explosion generator is higher and the explosion generator is easy to control.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile safety airbags, and particularly relates to a front airbag with controllable unfolding shape. Background Art

[0002] When a car collides, the airbag is filled with gas. The gas is generated by the generator detonating, filling the airbag bag and causing the airbag bag to deploy rapidly. Because the generator is located outside, after detonation, the gas generated inflates the airbag, but the gas from the generating port cannot effectively fill the inside of the airbag. At the same time, the heat and debris generated after detonation will affect the parts of the airbag accessories and easily cause additional damage to the occupants. Utility Model Content

[0003] The utility model provides a front airbag with controllable deployment shape, which can effectively solve the above problems.

[0004] The utility model is achieved in this way:

[0005] A front airbag with controllable deployment shape, comprising:

[0006] A module shell, wherein an airbag bag, a drawstring, a guide belt and a flash generator are arranged on the module shell, at least two groups of the drawstrings are arranged, and the two groups of the drawstrings are arranged up and down on the same side of the module shell, one end of the drawstring is connected to the module shell, and the end of the drawstring away from the module shell is connected to the middle of the end of the airbag bag away from the module shell, the guide belt is located inside a first cavity formed by the two groups of the drawstrings and the airbag bag, at least two groups of the guide belts are arranged, one end of the guide belt close to the module shell is connected to the module shell, and the end of the guide belt away from the module shell is connected to the other group of guide belts through a ring, and the flash generator is located inside a second cavity formed by the two groups of the guide belts connected to each other.

[0007] As a further improvement, a cloth barrier is further provided on the side of the module housing facing the burst generator, and the cloth barrier is used to block the heat generated by the burst generator.

[0008] As a further improvement, the distance between the connection points of the two groups of drawstrings and the middle part of the airbag bag is 20-50 cm.

[0009] As a further improvement, the two groups of drawstrings can be bent at an angle of 100°-150°.

[0010] The beneficial effects of the utility model are as follows: by installing the detonation generator of the airbag inside the airbag and restraining it with the guide belt, the heat and gas escape are effectively avoided, so that the working efficiency of the detonation generator is higher and easier to control; at the same time, the heat generated by the detonation generator after detonation and the airflow flow out through the through holes on both sides of the guide belt to fill the airbag, and there will be no heat overflow to damage the shell and nearby parts; at the same time, the debris generated after the detonation is restrained by the guide belt, and the debris will not spread to other locations to create additional risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a cross-sectional structural schematic diagram of the utility model in the first unfolded state;

[0013] Figure 2 It is a cross-sectional structural schematic diagram of the utility model in the second unfolded state;

[0014] Reference numerals:

[0015] 1-airbag, 2-module shell, 3-pull belt, 4-guide belt, 5-cloth partition. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0017] In the description of the present invention, the terms "upper", "lower", "above", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] Reference Figure 1-2 As shown, this embodiment provides a front airbag with controllable deployment shape, including:

[0019] A module shell 2, on which an airbag 1 bag, a drawstring 3, a guide belt 4 and a flash generator are arranged, the drawstring 3 is provided with at least two groups, and the two groups of the drawstrings 3 are arranged up and down on the same side of the module shell 2, one end of the drawstring 3 is connected to the module shell 2, and the end of the drawstring 3 away from the module shell 2 is connected to the middle of the end of the airbag 1 bag away from the module shell 2, the guide belt 4 is located inside a first cavity formed by two groups of the drawstrings 3 and the airbag 1 bag, at least two groups of the guide belt 4 are provided, one end of the guide belt 4 close to the module shell 2 is connected to the module shell 2, and the end of the guide belt 4 away from the module shell 2 is connected to the other group of the guide belt 4 through a ring, and the flash generator is located inside a second cavity formed by the two groups of the guide belts 4 connected to each other.

[0020] Furthermore, a cloth barrier 5 is provided on the side of the module housing 2 facing the burst generator, and the cloth barrier 5 is used to block the heat generated by the burst generator.

[0021] By installing the detonation generator of the airbag 1 inside the airbag 1 and restraining it with the guide strip 4, the heat and gas escape can be effectively avoided, making the detonation generator more efficient and easier to control; at the same time, the heat and airflow generated by the detonation generator after detonation flow out through the through holes on both sides of the guide strip 4 to fill the airbag 1, and there will be no heat overflow to damage the shell and nearby parts; at the same time, the debris generated after the detonation is restrained by the guide strip 4, and the debris will not spread to other locations to create additional risks.

[0022] Furthermore, the distance between the connection points of the two groups of the drawstrings 3 and the middle of the airbag 1 is 20-50 cm.

[0023] By controlling the distance between the two groups of drawstrings 3 to be between 20-50 cm, in the present embodiment, the distance between the two groups of drawstrings 3 is 35 cm. The advantage of such a setting is that it can ensure that the grooves formed by the two groups of drawstrings 3 during the pulling process can fully protect the body of the occupant, thereby avoiding the situation where the width of the grooves is too small and thus the occupant cannot be better protected.

[0024] Furthermore, the two groups of drawstrings 3 can be bent at an angle of 100°-150°.

[0025] By controlling the bending angle of the drawstring 3 to 100°-150°, the overall bending degree of the drawstring 3 will not be too large, resulting in a groove depth that is too deep and poorly protecting the occupants. However, if the groove depth is too shallow, the occupants cannot be completely covered, resulting in incomplete protection.

[0026] The working process of this utility model:

[0027] The detonation generator of the airbag 1 is installed inside. After the detonation generator is detonated, the airflow generated passes through the openings on both sides to inflate the entire airbag 1, causing the airbag 1 to swell up, preventing the occupants from bumping into other hard places in the car, thereby protecting the safety of the occupants. At the same time, the guide belt 4 constrains the airflow and flows to both sides of the guide belt 4, so that the airflow will not be allowed to freely inflate the airbag 1 disorderly, reducing the heat of the detonation generator and the loss of airflow, thereby increasing the use efficiency of the detonation generator; at the same time, after the detonation generator is detonated, the fabric interlayer 5 at the assembly hole position blocks the heat to prevent the heat from overflowing and damaging the module housing 2 and nearby components; at the same time, after the detonation generator is detonated, the debris generated is bound by the guide belt 4 and will not spread to other locations, causing additional risks

[0028] After the airflow is generated, the pull strap 3 starts to work, pulling the position of point B, controlling the rebound shape of B, and at the same time making a concave surface appear at point B. When the occupant's head contacts point B, the head is sunken in point B, which better protects the occupant's head. When the occupant's position shifts, after the airbag 1 is deployed, the position of point B bulges to the left and right sides like butterfly wings, which can also effectively protect the safety of the occupant.

[0029] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A front airbag with controllable deployment shape, characterized in that: include: A module shell, wherein an airbag bag, a drawstring, a guide belt and a flash generator are arranged on the module shell, at least two groups of the drawstrings are arranged, and the two groups of the drawstrings are arranged up and down on the same side of the module shell, one end of the drawstring is connected to the module shell, and the end of the drawstring away from the module shell is connected to the middle of the end of the airbag bag away from the module shell, the guide belt is located inside a first cavity formed by the two groups of the drawstrings and the airbag bag, at least two groups of the guide belts are arranged, one end of the guide belt close to the module shell is connected to the module shell, and the end of the guide belt away from the module shell is connected to the other group of guide belts through a ring, and the flash generator is located inside a second cavity formed by the two groups of the guide belts connected to each other.

2. The front airbag with controllable deployment shape according to claim 1, characterized in that: A cloth barrier is also provided on one side of the module housing facing the burst generator, and the cloth barrier is used to block the heat generated by the burst generator.

3. The front airbag with controllable deployment form according to claim 1, characterized in that: The distance between the connection points of the two groups of drawstrings and the middle part of the airbag bag is 20-50 cm.

4. The front airbag with controllable deployment configuration according to claim 1, characterized in that: The two groups of drawstrings can be bent at an angle of 100°-150°.

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