CN100591552C - Air bag components for vehicles - Google Patents

Abstract

The invention discloses an air bag assembly of a vehicle. The air bag assembly of the vehicle has a simple assembly structure to reduce the number of parts and is easy to install. It comprises: an instrument panel and a receiving hole is formed through the instrument panel; The air bag door on the hole; the air bag housing installed in the receiving hole and built in the air bag; the extension part protruding from the air bag door to the inside of the receiving hole; in order to connect the air bag door and the air bag housing to be installed in A connecting unit between the extension and the airbag housing; an assembly unit installed between the airbag door and the receiving hole for fastening the airbag door in the receiving hole.

Description

Air bag components for vehicles

technical field

The present invention relates to an air bag assembly for a vehicle, and more particularly to an air bag assembly for a vehicle which has a simple assembly structure to reduce the number of parts and is easy to install.

Background technique

1 is a schematic interior view of a conventional vehicle, and FIG. 2 is a longitudinal sectional view along line A-A in FIG. 1, illustrating a conventional air bag module of the vehicle.

With reference to Fig. 1 and Fig. 2, the conventional air bag assembly of vehicle comprises: the air bag door 20 that is installed on the instrument panel 10, the air bag 32 that is installed in the air bag door 20, when vehicle collides, this air bag 32 is released from the air bag The outside of the door 20 protrudes to expand the volume, and the air bag housing 30 is installed on the inner surface of the instrument panel 10 and connected with the air bag door 20 and contains an air bag 32 .

The air bag door 20 is installed in the receiving hole 12 of the instrument panel 10 . The bracket 22 is installed on the outer wall of the edge of the receiving hole 12 . One end of the airbag door 20 is inserted between the bracket 22 and the receiving hole 12 , and the airbag housing 30 is disposed on the inner wall of the receiving hole 12 .

The bracket 22, the air bag door 20, the receiving hole 12 and the air bag housing 30 are stacked together and fastened together by bolts B, thereby allowing the air bag module to be installed. The other end of the air bag door 20 is not inserted between the bracket 22 and the receiving hole 12 so that the air bag is opened when the air bag 32 protrudes from the outside of the air bag door 20 .

Since the connection of the air bag door 20 and the air bag housing 30 is realized by the bolt B, in order to improve the rigidity of the connecting part between the air bag door 20 and the air bag housing 30, the conventional air bag assembly of the above-mentioned vehicle requires the installation bracket 22 , and thus it is difficult to reduce the number of parts required for the installation of the air bag module. In addition, the above-mentioned conventional air bag module for vehicles has a complicated assembly structure, so it is difficult to reduce the time and cost required for the installation of the air bag module.

Contents of the invention

The present invention is to solve the above-mentioned problems, and the object of the present invention is to provide a vehicle air bag assembly with an improved assembly structure, to reduce the number of parts required for the installation of the air bag assembly and to reduce the time required for the installation of the air bag assembly and cost.

Another object of the present invention is to provide an air bag module for a vehicle by which it is expanded or contracted to avoid deformation and damage caused by expansion and contraction of an instrument panel according to temperature changes.

Another object of the present invention is to provide an air bag assembly for a vehicle with enhanced strength of the air bag door to avoid deformation and destruction of the air bag door.

The above and other objects according to the present invention can be achieved by providing an air bag assembly for a vehicle comprising: an instrument panel through which a receiving hole is formed; an air bag mounted on the receiving hole The door; the air bag housing installed in the receiving hole and built in the air bag; the extension part protruding from the air bag door to the inside of the receiving hole; the extension part and the air bag housing installed in order to connect the air bag door and the air bag housing A connecting unit between airbag housings; an assembly unit installed between the airbag door and the receiving hole for assembling the airbag door in the receiving hole.

A large number of concave creases are formed on the upper surface of the air bag door.

The air bag door may also include: slit holes that allow the air bag door to tear when the air bag is deployed, overmolded on the upper or lower surface of the air bag door to increase the stiffness of the air bag door and to avoid deformation of the air bag door reinforcements.

The reinforcement is made of metal.

An extension protrudes integrally from the reinforcement, which extension is insert-injected when inserted into the slit hole, in order to avoid spontaneous separation of the reinforcement and the airbag door.

The seam is recessed into the airbag door between each adjacent slit hole, and the bent piece integrally protrudes from the reinforcement and is insert-injected while inserted into the slit hole to avoid spontaneous separation of the reinforcement and the airbag door.

The assembly unit includes: a convex part obtained by bending the edge of the receiving hole inwardly, and a hook installed around the protruding part corresponding to the convex part.

The connection unit includes a connection hole formed through a bottom surface of the protruding part, and a connection protrusion formed on the airbag housing corresponding to the connection hole and inserted into the connection hole.

The connecting unit also includes a fastening piece screwed on the end of the airbag housing, a coil spring mounted on the rotating shaft of the fastening piece, and a fastening hole formed corresponding to the fastening piece through the inner wall of the airbag door.

As can be known from the above description, the present invention provides an air bag assembly for a vehicle, the air bag door and the air bag housing are connected together by a connecting unit, and the air bag door and the instrument panel are connected by a combining unit, thus reducing the installation time. The number of parts required for an airbag assembly reduces unit cost.

Due to the creases formed on the outer wall of the air bag, the air bag door expands and contracts with the expansion and contraction of the instrument panel, and the air bag assembly for the vehicle of the present invention avoids the deformation of the instrument panel where the air bag door is located, allowing the instrument panel to remain well Appearance.

Since the airbag door made of plastic and the reinforcing member made of metal are integrally formed by overmolding, the airbag module for a vehicle of the present invention avoids the airbag door from being destroyed or deformed. In addition, the extension piece and the bent piece protrude from the reinforcement member, and are respectively injection molded into the slit hole and the seam, thereby tightly connecting the reinforcement member to the airbag door.

Description of drawings

The above and other objects, features and other advantages of the present invention will be described in detail below in conjunction with the accompanying drawings, so as to understand the present invention more clearly.

Fig. 1 is the internal schematic diagram of common vehicle;

Figure 2 is a longitudinal sectional view along line A-A in Figure 1, illustrating a conventional air bag assembly of a vehicle;

3 is a longitudinal sectional view of an air bag module for a vehicle according to a first embodiment of the present invention;

4 is a schematic diagram of an air bag door of a vehicle air bag assembly according to a first embodiment of the present invention;

5 is a longitudinal sectional view of an air bag module for a vehicle according to a second embodiment of the present invention;

6 is an exploded longitudinal sectional view of a vehicle air bag module according to a second embodiment of the present invention;

7 is a longitudinal sectional view of an air bag module for a vehicle according to a third embodiment of the present invention;

8 is a perspective view of an essential part of a door of a vehicle air bag module according to a third embodiment of the present invention;

Figure 9 is an exploded perspective view of Figure 8;

Fig. 10 is a longitudinal sectional view along line A-A in Fig. 8;

Fig. 11 is a longitudinal sectional view along line B-B in Fig. 8 .

Detailed ways

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

For ease of illustration, an air bag assembly for a vehicle is described by way of example. Here, for clarity and convenience of description, the thickness of lines and the size of elements shown in the drawings may be exaggerated.

Each item to be described later is defined according to the action of the present invention, and may vary depending on the user's purpose or usual practice.

Meanwhile, it is necessary to define each item based on the entire content of the specification of the present invention.

3 is a longitudinal sectional view of an air bag for a vehicle according to a first embodiment of the present invention; FIG. 4 is a schematic diagram of an air bag door of an air bag module for a vehicle according to a first embodiment of the present invention.

According to Fig. 3 and Fig. 4, the vehicle air bag assembly of the first embodiment comprises: instrument panel 50 and forms a receiving hole 52 by this instrument panel 50; The air bag door 60 that is installed in the receiving hole 52; Inside and built-in the air bag housing 70 of the air bag 72; the extension part 62 extending from the air bag door 60 to the inside of the receiving hole 52; The connecting unit 90 with the air bag housing 70 ; the fitting unit 80 installed between the air bag door 60 and the receiving hole 52 in order to fasten the air bag door 60 in the receiving hole 52 .

After the air bag housing 70 with the built-in air bag 72 and the air bag door 60 are connected through the connecting unit 90, the air bag door 60 is installed on the receiving hole 52 through the assembly unit 80, and the receiving hole 52 is passed through the inner surface of the instrument panel 50. The blowing agent layer 56 and the outer panel 58 are formed on the outer wall formed by the inner panel 54 and the air bag door 60 . Thus, the instrument panel 50 and the air bag assembly are installed.

A large number of concave creases 64 are formed on the upper surface of the airbag door 60 . Therefore, the airbag door 60 effectively expands and contracts with the expansion and contraction of the instrument panel 50 according to temperature changes, thereby avoiding convex or concave deformation on the instrument panel 50 where the airbag door 60 is located.

The assembly unit 80 includes: a convex portion 82 obtained by bending the edge of the receiving hole 52 inwards, and a hook 84 installed around the protruding portion 62 corresponding to the convex portion 82 .

The connection unit 90 includes a connection hole 92 formed through a lower end of the protruding portion 62 , and a connection protrusion 94 formed on the airbag housing 70 corresponding to the connection hole 92 and inserted into the connection hole 92 .

Thus, when the upper end of the air bag housing 70 is inserted into the protruding portion 62 of the air bag door 60 , a designated portion of the upper end of the air bag housing 70 is deformed inwardly and slid inside the protruding portion 62 . Then, when the connection protrusion 94 reaches the position corresponding to the connection hole 92, the air bag housing 70 returns to the original state, while the connection protrusion 94 is inserted into the connection hole 92, thereby connecting the air bag door 60 and the air bag case. Body 70.

Thereafter, when the air bag door 60 and the air bag housing 70 are inserted into the receiving hole 52 , the designated protrusion 62 and the air bag housing 70 , respectively made of synthetic resin, deform and slide into the receiving hole 52 . Then, when the hook 84 is caught by the protrusion 82 , the protruding portion 62 and the air bag housing 70 return to their original states, thereby assembling the air bag door 60 and the air bag housing 70 to the instrument panel 50 .

Hereinafter, the operation of the air bag module for a vehicle according to the first embodiment of the present invention will be described.

First, when the airbag case 70 made of synthetic resin is inserted into the airbag door 60 made of synthetic resin, the designated airbag case 70 and airbag door 60 are deformed, and the connection protrusion 94 is inserted into the connection hole 92 . Thus, the air bag door 60 and the air bag housing 70 are connected together.

When the air bag door 60 and the air bag housing 70 connected in the above-mentioned manner are inserted into the receiving hole 52 formed by the inner panel 54 of the instrument panel 50 made of metal, the designated protrusion 62 and the air bag The housing 70 is deformed while the hook 84 is hooked by the protrusion 82 . Accordingly, the air bag door 60 and the air bag housing 70 are attached to the instrument panel 50 .

Thereafter, the foaming agent layer 56 and the outer panel 58 are formed on the outer wall composed of the inner panel 54 and the airbag door 60, thereby completing the installation of the airbag module.

Generally, a groove (not shown) similar in shape to the air bag door 60 is formed on the outer panel 58, and the air bag door 60 is arranged here so that when the air bag door is opened, the outer panel 58 can easily follow the groove. cut off.

5 is a longitudinal sectional view of a vehicle air bag module according to a second embodiment of the present invention; FIG. 6 is an exploded longitudinal sectional view of the vehicle air bag module according to the second embodiment of the present invention.

Referring to FIGS. 5 and 6 , compared with the vehicle air bag module of the first embodiment, the vehicle air bag module of the second embodiment of the present invention is characterized by the connection unit 190 .

The connecting unit 190 of the vehicle air bag assembly of the second embodiment of the present invention includes: a fastening piece 192 screwed on the end of the air bag housing 70, a coil spring 196 installed on the rotating shaft of the fastening piece 192, and a fastening piece The fixing piece 192 corresponds to the fastening hole 194 formed through the inner wall of the airbag door 60 .

The fastening piece 192 has a panel inclined toward the inside of the air bag housing 70 at a prescribed angle, and has a bent portion corresponding to the fastening hole 194 at its end.

When the airbag housing 70 is slid onto the fastening hole 194, the bent portion contacts the fastening hole 194 and causes the fastening tab 192 to rotate while the coil spring 196 compresses. Then, the fastening piece 192 is rotated to the outside of the air bag housing 70 to a state where the air bag housing 70 can be inserted into the air bag door 60 .

Afterwards, when the airbag housing 70 is continuously slid, the airbag housing 70 is inserted into the airbag door 60 so that the fastening piece 192 corresponds to the fastening hole 194 . Then, the fastening piece 192 reaches the fastening hole 194 under the restoring force of the coil spring 196 . Thus, the air bag door 60 and the air bag housing 70 are connected together.

7 is a longitudinal sectional view of a vehicle air bag module according to a third embodiment of the present invention, FIG. 8 is a perspective view of an essential part of a door of a vehicle air bag module according to a third embodiment of the present invention, and FIG. 9 is a view of FIG. 8 10 is a longitudinal sectional view along line A-A in FIG. 8 , and FIG. 11 is a longitudinal sectional view along line B-B in FIG. 8 .

Referring to FIGS. 7 to 11 , an air bag module for a vehicle according to a third embodiment of the present invention is characterized by an air bag door 160 .

In order to open the air bag door 160, a slit hole 108 is provided through the air bag door 160 of the vehicle air bag module of the third embodiment.

In particular, the crack holes 108 are continuous along the c-shaped path and spaced at a certain interval.

Thus, when the air bag 72 deploys, the air bag door 160 is opened along the slit hole 108 .

Especially, the air bag door 160 is made of plastic and thus is easily deformed or damaged.

Therefore, the reinforcement 110 is integrally formed on the upper surface or the lower surface of the airbag door 160 . The reinforcement 110 is made of metal, thus reinforcing the airbag door 160 .

In particular, the reinforcement member 110 has a plate shape integrally formed on the entire surface of the air bag door 160 .

In particular, the reinforcement 110 is overmolded on the surface of the airbag door 160 .

Overmolding is a technique where a metal insert product is covered by an injection molded product and then injection molded. Overmolding is well known to those skilled in the art, and a detailed description thereof is omitted here.

Accordingly, the airbag door 160 made of plastic is positioned on the reinforcing member 110 made of metal to form a double-layered structure, thus improving rigidity. Therefore, it is possible to avoid curling, deformation, and destruction of the air bag door 160 .

In particular, the reinforcing member 110 is formed on the upper surface of the air bag door 160, opposite to the lower surface of the air bag door 160, the lower surface of the air bag door 160 faces the air bag 72, so the reinforcing member 110 will not directly collide with the air bag 72. .

In addition, the reinforcement member 110 is insert injection molded such that the extension member 120 integrally protrudes from the reinforcement member 110 and is inserted into the slit hole 108 .

The extension 120 prevents the reinforcement 110 and the air bag door 160 from being separated randomly.

The extension member 120 is insert injection molded to form an L shape and protrudes outside through the slit hole 108 , thereby closely attaching the reinforcement member 110 to the airbag door 160 .

In particular, the extensions 120 integrally protrude from the edge of the stiffener 110 as many as the slit holes 108 so that injection molding can enter all the slit holes 108 .

The seam 109 is embedded in the airbag door 160 between every two slit holes 108 .

The seams 109 on the airbag door 160 are on the same plane.

Further, the bent piece 130 integrally protrudes from the reinforcing piece 110 to be inserted into the seam 109 .

The bend 130 is embedded in the seam 109 and is integrally injection molded in this condition. Therefore, the reinforcement member 110 is closely connected to the air bag door 160 .

In particular, the bent portion 130 is embedded in the seam 109 between the slit holes 108 and is integrally injection molded under such conditions.

In addition, the extension piece 120 and the bending piece 130 protrude from the reinforcing piece 110 at the same time.

Injection molding is a common technique, a detailed description of which is omitted here.

Although a preferred embodiment of the invention has been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and deletions are possible. For example, although an air bag module for a vehicle has been exemplified, the present invention is applicable to air bag modules for other systems as well.

Claims (7)

1. the air bag assembly of a vehicle is characterized in that, this assembly comprises: instrument panel also passes through receiver hole of this instrument panel formation; Be installed in the air bag door on the receiver hole; Be installed in the receiver hole and be built-in with the air bag housing of air bag; Reach receiver hole in-to-in extension from the air bag door; Be installed in linkage unit between extension and the air bag housing in order to connect air bag door and air bag housing; Be installed in the assembly unit between air bag door and the receiver hole for the air bag door in the fastening receiver hole, this assembly also comprises: the hole, crack that the air bag door is opened, upper surface or the Overmolded reinforcement of lower surface at the air bag door, integral body is extended with the extension part on the described reinforcement, and described extension part embeds injection moulding under the situation of inserting the hole, crack.

2. vehicle air air bag component according to claim 1 is characterized in that the upper surface of described air bag door is formed with recessed wrinkle.

3. vehicle air air bag component according to claim 1 is characterized in that described reinforcement is made of metal.

4. vehicle air air bag component according to claim 1 is characterized in that, the seam that caves between hole, crack adjacent on the air bag door is extended and the injection molding bool of embedding under the situation of inserting seam from reinforcement is whole.

5, vehicle air air bag component according to claim 1 is characterized in that, described assembly unit comprises: the neck-in of receiver hole and the protuberance that obtains, corresponding protuberance is installed in the hook around the extension.

6. vehicle air air bag component according to claim 1 is characterized in that, described linkage unit comprises: the connecting bore that the bottom surface by extension forms is formed on corresponding connecting bore on the air bag housing and inserts the connection protuberance of connecting bore.

7. vehicle air air bag component according to claim 1, it is characterized in that, described linkage unit also comprises: spinning is at the fasteners of the end of air bag housing, is installed in the wind spring on the S. A. of fasteners, the fastener hole that fasteners forms by air bag door inwall correspondence.

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