CN212950505U

CN212950505U - Side air curtain assembly and car

Info

Publication number: CN212950505U
Application number: CN202021994739.6U
Authority: CN
Inventors: 何建英; 石文辉; 胡新文; 杨国元; 矫青春; 何涛
Original assignee: Zhaoqing Xiaopeng Automobile Co Ltd
Current assignee: Zhaoqing Xiaopeng Automobile Co Ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-04-13
Anticipated expiration: 2030-09-11

Abstract

The application relates to a side curtain assembly and an automobile. This side air curtain assembly includes: an air bag assembly, a webbing, and a deployment guide; the head part of the mesh belt is provided with a fixing head for fixing the A-column metal plate, and the tail part of the mesh belt is connected with the air bag assembly; a limiting surface facing the A-pillar metal plate is formed between the head part and the tail part of the mesh belt; the unfolding guide part is a pressure-sensitive adhesive layer, the top surface of the pressure-sensitive adhesive layer is adhered to the limiting surface of the woven belt, and the bottom surface of the pressure-sensitive adhesive layer is used for being adhered to an A-column metal plate. The application provides a side gas curtain assembly has reliability when blasting high, and equipment improvement is with low costs, and production efficiency is high, does benefit to the advantage that realizes industrial volume production.

Description

Side air curtain assembly and car

Technical Field

The application relates to the field of automobile safety devices, in particular to a side air curtain assembly and an automobile.

Background

The side air curtain is one of the passive safety devices of the automobile, and in addition to the safety air bag arranged right in front of the passenger, the side air curtain is simultaneously arranged at the side of the modern middle and high-grade automobile so as to buffer the impact from the side. The side curtain and its woven belt are usually installed at the side of the vehicle and the junction with the roof, generally through the A/B/C/D pillar of the vehicle, and one on each of the left and right sides. The working principle of the side air curtain is as follows: when the vehicle encounters severe impact from the side, the sensor detects a deceleration signal and an initiation signal sent by an air bag ECU, a gas generator of the side air curtain device instantly releases inert gas, the inert gas is filled into an air curtain bag, the air curtain is rapidly expanded and unfolded, impact energy is absorbed, and the impact injury between the head of a passenger and the interior trim is reduced. Therefore, the arrangement of the side air curtain plays a key role in protecting the head of the passenger, the head of the passenger can be greatly prevented from colliding with the glass window or the side column of the automobile and being injured in the collision process, and the automobile safety protection device is very effective.

In the unfolding process of the side air curtain, the bag body of the side air curtain shakes and changes violently, in order to keep the shape of the bag body after the side air curtain is unfolded, a woven belt (namely a side air curtain pull belt) is generally designed at the front part of the side air curtain, and the woven belt is used for controlling the unfolding shape of the side air curtain in the unfolding process of the side air curtain. Typically, the webbing and a portion of the side curtain are located inside the A-pillar trim panel. In blasting test and actual operation, when the side air curtain explodes, unqualified blasting test and blasting failure of the woven belt caused by the fact that the woven belt cannot be unfolded in place occur occasionally in the unfolding process of the side air curtain, and therefore the protection performance of the side air curtain is affected. In order to solve the problems, a structure that a bracket or a guide plate is installed on an A column and the like exists in the related technology, but the problems that product parts are various, the assembly and disassembly are complex and the like exist in most cases.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present application provides a side curtain assembly and an automobile.

First, the present application provides a side curtain assembly comprising: an air bag assembly, a webbing, and a deployment guide; wherein the content of the first and second substances,

the head part of the mesh belt is provided with a fixing head for fixing the A-pillar metal plate, and the tail part of the mesh belt is connected with the air bag assembly; a limiting surface facing the A-pillar metal plate is formed between the head part and the tail part of the mesh belt;

the unfolding guide part is a pressure-sensitive adhesive layer, the top surface of the pressure-sensitive adhesive layer is adhered to the limiting surface of the woven belt, and the bottom surface of the pressure-sensitive adhesive layer is used for being adhered to an A-column metal plate.

Further, the midpoint of the pressure sensitive adhesive layer coincides with the midpoint of the webbing.

Further, the total length of the pressure-sensitive adhesive layer is one half of the length of the woven tape, and the ratio of the width of the pressure-sensitive adhesive layer to the width of the woven tape is (3/4-1): 1.

further, the pressure-sensitive adhesive layer is of a one-section structure, and the pressure-sensitive adhesive layer is rectangular or is in a shape that the width of the tail end is larger than that of the head end.

Further, the shape in which the width of the trailing end is greater than the width of the leading end is one of the following shapes:

the ladder-shaped structure comprises a ladder-shaped structure which is transversely arranged, wherein the head end of the ladder-shaped structure is a short side, and the tail end of the ladder-shaped structure is a long side;

the head end is rectangular, and the tail end is a trapezoidal first combined graph; the rectangle in the first combined graph is connected with the short side of the trapezoid;

the head end is rectangular, and the tail end is a circular second combined graph; in the second combined graph, the width of the rectangle is smaller than the diameter of the circle.

Further, the pressure-sensitive adhesive layer is of a sectional structure, the pressure-sensitive adhesive layer comprises a plurality of pressure-sensitive adhesive layer split units which are uniformly arranged in a clearance mode, and the size of the pressure-sensitive adhesive layer split units is gradually reduced along the direction from the tail end to the head end of the woven belt.

Further, the pressure-sensitive adhesive layer is double-sided adhesive or nano traceless adhesive.

The present application further provides an automobile, comprising: the side curtain assembly comprises an A column decorative plate, an A column metal plate and any one of the side curtain assemblies; the fixed head of the meshbelt of the side air curtain assembly is fixed in the A post panel beating, the bottom surface adhesion of the pressure sensitive adhesive layer of meshbelt is in A post panel beating.

Further, the bottom surface of the pressure-sensitive adhesive layer is adhered to the straight section of the A-pillar metal plate.

Further, the automobile is a new energy electric automobile.

Compared with the prior art, the side air curtain assembly that this application provided has following advantage:

1) the woven belt is provided with an unfolding guide part which is a pressure-sensitive adhesive layer, and when the side air curtain is not exploded, the woven belt can be fixed on the A-pillar metal plate in a bonding mode; when the side air curtain explodes, the air pocket inflation, it produces the power of tearing in the twinkling of an eye to the meshbelt, should pull the power and be greater than pressure-sensitive adhesive's adhesion far away for the meshbelt can break away from the constraint back expansion of pressure-sensitive adhesive fast, because the effect of pressure-sensitive adhesive's adhesion has simultaneously restricted the random activity of meshbelt, makes the meshbelt can only follow the position expansion that same easy expansion, and then prevents that the condition of the unable smooth expansion of meshbelt from taking place, improves the reliability of side air curtain when the blasting.

2) The structure change to current side inflatable curtain is little, add on the basis of original meshbelt pressure sensitive adhesive layer can, consequently can adopt the production facility of former side inflatable curtain, reduce equipment improvement cost when optimizing technological effect, improve production efficiency.

3) The pressure-sensitive adhesive layer as the unfolding guide part has the advantages of cheap and easily-obtained raw materials and flexible and various arrangement positions and shapes, so that the industrial mass production is favorably realized.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

FIG. 1 is a schematic structural diagram of a side curtain assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the installation of a side curtain assembly according to an embodiment of the present application;

FIG. 3 is a schematic view of a one-piece construction of a pressure sensitive adhesive layer of a side curtain assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of another one-piece construction of a pressure sensitive adhesive layer in a side curtain assembly according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of another one-piece construction of a pressure sensitive adhesive layer in a side curtain assembly according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural view of a segmented structure of a pressure sensitive adhesive layer in a side curtain assembly according to an embodiment of the present disclosure;

FIG. 7 is another schematic structural view of a segmented structure of a pressure sensitive adhesive layer in a side curtain assembly according to an embodiment of the present disclosure;

FIG. 8 is another schematic structural view of a segmented structure of a pressure sensitive adhesive layer in a side curtain assembly according to an embodiment of the present disclosure;

fig. 9 is a schematic view of a portion of an automobile showing another embodiment of the present application, in which the webbing is not shown.

Description of the reference numerals

11-airbag assembly

12-woven tape

121-fixing head

13-pressure sensitive adhesive layer

2-A column metal plate

3-A column decorative plate

Detailed Description

Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In blasting test and actual operation, when the side air curtain explodes, the braid moves randomly in the unfolding process of the side air curtain, so that the braid is not beneficial to being unfolded, and the blasting test is unqualified. In view of the above problems, embodiments of the present application provide a side curtain assembly, which can ensure that a webbing is deployed from the same easy-to-deploy position when a side curtain is exploded, thereby improving the reliability of the explosion.

The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 and 2 illustrate the structure of a side curtain assembly according to an embodiment of the present application, the side curtain assembly including: an air bag assembly 11, a webbing 12, and a deployment guide portion; wherein the content of the first and second substances,

the head part of the mesh belt 12 is provided with a fixing head 121 for fixing the A-pillar metal plate 2, and the tail part of the mesh belt is connected with the air bag assembly 11; a limiting surface facing the A-pillar metal plate 2 is formed between the head part and the tail part of the mesh belt 12;

the unfolding guide part is a pressure-sensitive adhesive layer 13, the top surface of the pressure-sensitive adhesive layer 13 is adhered to the limiting surface of the woven belt 12, and the bottom surface of the pressure-sensitive adhesive layer is adhered to the A-pillar metal plate 2.

In the side curtain assembly provided by the embodiment, the fixing head 121 at the head of the webbing 12 is used for being fixed to the a-pillar metal plate 2 through a fastener. The A-pillar metal plate refers to a connecting pillar for connecting the roof and the front cabin of the automobile at the front left and right sides, and is arranged between the engine cabin and the cockpit and above the left and right rearview mirrors. The specific structure of the fixing head 121 of the webbing 12 may be the same as that of the prior art, and it is fixed to the a-pillar metal plate 2 by bolts. The tail of the webbing 12 is connected to the air bag assembly 11. The webbing 12 is preferably made of a polyamide material, i.e. nylon webbing is used. The polyamide is commonly called Nylon (Nylon), and the Nylon has high mechanical strength and good toughness; the self-lubricating property and the friction resistance are good, the friction coefficient is small, and the service life is long; has excellent heat resistance and can be used for a long time at 150 ℃; the nylon has excellent electrical insulation performance, high volume resistance, high breakdown voltage resistance and long service life, and can improve the safety of automobile drivers and passengers. In addition, the side air curtain drawstring can also be made of elastic materials, is suitable for various driving working conditions, and has the advantages of friction resistance and long service life.

The side curtain assembly provided in this embodiment is further provided with an unfolding guide portion for guiding the unfolding direction and area of the webbing 12. Specifically, the unfolding guide part is a pressure-sensitive adhesive layer 13, which is disposed on the position-limiting surface arranged between the head and the tail of the woven tape 12 and facing the a-pillar metal plate 2. The limiting surface is the surface facing the A-pillar metal plate when the mesh belt 12 is installed. The pressure-sensitive adhesive layer 13 has double-sided adhesive property, the top surface of the pressure-sensitive adhesive layer is adhered to the limiting surface, the bottom surface of the pressure-sensitive adhesive layer is adhered to the A-pillar metal plate 2, and then the mesh belt 12 is fixed to the A-pillar metal plate 2 in an adhesive mode. During the side air curtain blasting, the air pocket inflation, it produces the power of tearing in the twinkling of an eye to meshbelt 12 huge, should pull the power and be greater than pressure-sensitive adhesive's adhesion far away, expand after making meshbelt 12 can break away from pressure-sensitive adhesive's constraint fast, because pressure-sensitive adhesive's adhesion effect has restricted meshbelt 12's random activity simultaneously, make meshbelt 12 can only expand from the position that same easy expansion, and then prevent that the condition of the unable smooth expansion of meshbelt 12 from taking place, improve the reliability of side air curtain when the blasting.

The reason why the pressure-sensitive adhesive layer 13 is used as the deployment guide is mainly as follows: firstly, the fixing force (namely the adhesive force) of the woven belt 12 not only can fix the woven belt 12 when the woven belt is not exploded, but also can not resist the pulling force of an air bag when the woven belt is exploded, and can be separated instantly; secondly, the raw materials are cheap and easy to obtain; and thirdly, the setting position and the shape are flexible and various, and industrial mass production is easy to realize. The pressure-sensitive adhesive layer 13 is preferably a double-sided adhesive or a nano traceless adhesive. The double-sided adhesive tape is cheap and easy to obtain, is thin in thickness, is rich in variety and is most suitable for the adhesive force of the woven tape; the nano traceless glue has the advantages of repeated use, difficult offset printing after falling off and convenient cleaning.

Preferably, the pressure-sensitive adhesive layer is preferably arranged at the center of the woven belt, namely, the midpoint of the pressure-sensitive adhesive layer coincides with the midpoint of the woven belt, so that the woven belt is subjected to a relatively balanced force when being fixed and separated from the fixed woven belt.

As a preferable scheme of the application, the total length of the pressure-sensitive adhesive layer 13 is half of the length of the woven tape 12, and the ratio of the width of the pressure-sensitive adhesive layer to the width of the woven tape 12 is (3/4-1): 1. the adhesive force of the pressure-sensitive adhesive layer 13 with the specification to the woven belt 12 is appropriate, so that the fixation in the open air can be ensured, and the woven belt 12 can easily break loose during blasting.

The pressure-sensitive adhesive layer 13 may have a one-stage structure. Specifically, if a one-stage structure is adopted, the pressure-sensitive adhesive layer 13 may be rectangular, or may be in other shapes. When the air bag explodes, the pulling force that the portion (namely the tail portion of the braid 12) that the braid 12 is close to the air bag assembly 11 received is great, and the pulling force that the head portion received is relatively less, breaks away from the homogeneity of pressure-sensitive adhesive in time in order to improve the braid 12 when exploding, and from this, the preferred width that is greater than the shape of head end width of tail end of pressure-sensitive adhesive layer 13. Further, the shape in which the width of the trailing end is greater than the width of the leading end is preferably one of the following shapes:

a trapezoid arranged transversely, the head end of the trapezoid being a short side and the tail end being a long side, please refer to fig. 3;

the head end is rectangular, and the tail end is a trapezoidal first combined graph; the rectangle in the first combined pattern is connected with the short side of the trapezoid, please refer to fig. 4;

the head end is rectangular, and the tail end is a circular second combined graph; in the second combined pattern, the width of the rectangle is smaller than the diameter of the circle, please refer to fig. 5.

In addition, the pressure-sensitive adhesive layer 13 may also be of a segmented structure, and specifically may include a plurality of pressure-sensitive adhesive layer split units arranged at uniform intervals, and each pressure-sensitive adhesive layer split unit may be rectangular, trapezoidal, or circular in shape. The size of each pressure-sensitive adhesive layer split unit can be consistent; in order to improve the uniformity of the tape in time of separating from the pressure-sensitive adhesive during the bursting, preferably, the size of the plurality of pressure-sensitive adhesive layer split units is gradually reduced along the direction from the tail end to the head end of the tape, for example: may be rectangular with a tapered size as shown in fig. 6, a transverse trapezoid with a tapered size as shown in fig. 7, and a circular with a tapered size as shown in fig. 8.

It will be understood by those skilled in the art that if the pressure-sensitive adhesive layer is a one-piece structure with a tail end having a width larger than the width of the head end, or a segmented structure with several split units of pressure-sensitive adhesive layers having gradually reduced sizes, the aforementioned preferred embodiments refer to: the ratio of the width of the pressure-sensitive adhesive layer to the width of the woven tape is (3/4-1): the "width" in 1 shall be the width of the largest dimension.

In the above-mentioned side gas curtain assembly that this application provided, when it does not install the A post panel beating 2 of car on, reduce its viscidity by impurity pollution such as dust in order to prevent pressure-sensitive adhesive layer 13, the bottom surface of pressure-sensitive adhesive layer 13 is preferred to be covered and is had the barrier paper, tears the barrier paper again when installation side gas curtain assembly, then with the bottom surface adhesion of pressure-sensitive adhesive layer 13 to the A post panel beating 2 on.

In addition, it should be noted that the side air curtain assembly provided in the embodiment of the present application may further include other structures of the existing side air curtain assembly, such as structures of the gas generator and its bracket, and the gas fixing piece, besides the air bag assembly, the webbing, and the deployment guide portion, which may be the same as those of the prior art, and are not repeated herein.

From the above, the side curtain assembly provided by the present application has the following advantages:

Referring to fig. 9, another embodiment of the present invention further provides an automobile, which includes: the A column decorative plate 3, the A column metal plate 2 and the side air curtain assembly provided by the embodiment; the fixed head of the meshbelt of the side air curtain assembly is fixed in the A post panel beating, the bottom surface A post panel beating of the pressure sensitive adhesive layer 13 of meshbelt. In fig. 9, for convenience of illustrating the position of the pressure-sensitive adhesive layer 13, only the pressure-sensitive adhesive layer is illustrated in the present figure, and the webbing is not illustrated.

The fixing position of the braid fixing head on the A-pillar metal plate 2 can be the same as the prior art. The connection relationship between the A-pillar trim 3 and the A-pillar metal plate 2 can also be the same as that in the prior art. As a preferred scheme of this embodiment, the bottom surface of the pressure-sensitive adhesive layer 13 is adhered to the straight section of the a-pillar metal plate, so as to fix the mesh belt quickly, efficiently and stably. The automobile provided by the application is preferably a new energy electric automobile.

Because above-mentioned side air curtain assembly has above-mentioned advantage, consequently be provided with this side air curtain assembly's car also correspondingly have the blasting reliability height, equipment improvement is with low costs, production efficiency is high and the easy advantage of industrialization volume production.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A side curtain assembly, comprising: an air bag assembly, a webbing, and a deployment guide; wherein the content of the first and second substances,

2. The side curtain assembly of claim 1 wherein the midpoint of the pressure sensitive adhesive layer coincides with the midpoint of the webbing.

3. The side curtain assembly of claim 1, wherein the total length of the pressure sensitive adhesive layer is one half of the length of the webbing, and the ratio of the width of the pressure sensitive adhesive layer to the width of the webbing is (3/4-1): 1.

4. the side curtain assembly of claim 1 wherein the pressure sensitive adhesive layer is a one-piece construction, the pressure sensitive adhesive layer being rectangular or shaped such that the width of the trailing end is greater than the width of the leading end.

5. The side curtain assembly of claim 4 wherein the shape having the width of the trailing end greater than the width of the leading end is one of:

6. The side curtain assembly of claim 1, wherein the pressure sensitive adhesive layer is a segmented structure, the pressure sensitive adhesive layer comprises a plurality of pressure sensitive adhesive layer split units which are uniformly arranged at intervals, and the size of the plurality of pressure sensitive adhesive layer split units is gradually reduced along the direction from the tail end to the head end of the woven belt.

7. The side curtain assembly of claim 1 wherein the pressure sensitive adhesive layer is double sided tape or nano traceless adhesive.

8. An automobile, comprising: an A-pillar trim panel, an A-pillar sheet metal, and the side curtain assembly of any of claims 1-7; the fixed head of the meshbelt of the side air curtain assembly is fixed in the A post panel beating, the bottom surface adhesion of the pressure sensitive adhesive layer of meshbelt is in A post panel beating.

9. The automobile of claim 8, wherein the bottom surface of the pressure sensitive adhesive layer is adhered to the straight section of the a-pillar sheet metal.

10. The automobile of claim 8, wherein the automobile is a new energy electric automobile.