JPH0986171A - Impact beam for automotive door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further improve safety by preventing an impact beam made of a highly rigid material from being directly brought into contact with occupants even when a big impact is exerted during side surface clashing. SOLUTION: An impact beam for an automotive door is composed of a beam main body 1 made of a rigid material with both ends thereof fixed and held in a door panel, a foamed body guard member 2 integrally formed with the beam main body 1 for covering the full surface of the center main body part 11 of the beam main body 1 and a foamed body impact absorbing part 3 integrally formed and connected with the guard member 2 and arranged in a space inside the door.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an automobile,
The present invention relates to an impact beam for an automobile door arranged inside a door to protect an occupant in a side collision.

[0002]

2. Description of the Related Art Conventionally, an impact beam is mounted inside a door of an automobile to protect an occupant in a side collision. Such an impact beam is formed of a metal such as iron in a pipe shape or a metal plate in a long shape having a high rigidity. The impact beam is usually fixed to an outer panel or an inner panel forming a door by bolts, nuts or welding, and is arranged so as to extend in the lateral direction at a substantially central portion inside the door.

[0003]

By the way, when a large impact is exerted at the time of a side collision of a vehicle such as a side collision of a vehicle, the door is remarkably deformed, so that the impact beam is exposed inside the vehicle interior. It is expected that it will penetrate the inner panel. In this case, the impact beam, which is made of a high-rigidity material and protrudes into the passenger compartment, may directly contact the occupant.

The present invention has been devised in view of the above situation, and prevents the impact beam, which is made of a highly rigid material, from directly contacting an occupant even when a large impact is applied at the time of a side collision, thereby further improving safety. It is an issue to be solved to provide an impact beam for an automobile door, which has been improved.

[0005]

The invention of claim 1 for solving the above-mentioned problems is an impact beam for an automobile door, which is disposed inside a door of an automobile and protects an occupant in a side collision, and both ends are door panels. It is characterized by comprising a beam main body made of a rigid material that is fixed and held, and a guard member made of a flexible material that covers at least the central surface of the beam main body.

The beam main body in the present invention may be the same as the conventional one, and is formed of a metal such as iron in a pipe shape or a metal plate in a long shape having a high rigidity. The beam main body can be provided with attachment parts to the door at both ends thereof. The guard member in the present invention is attached so as to cover at least the central surface of the beam body so that the beam body and the occupant do not come into direct contact with each other. The guard member is made of a flexible material so as to be interposed between the beam body and the occupant so as to absorb an impact.

According to a second aspect of the present invention, in the impact beam for an automobile door according to the first aspect, the guard member is made of foam. As the foam in the present invention, for example, foams of various resins, urethane, rubber, etc. can be used. Since these foams have flexibility and exhibit an excellent cushioning effect, they are suitable as a guard member. The foam may be attached to the beam body with an adhesive or the like, or may be integrally formed with the beam body when forming the foam to be attached to the beam body.

The invention of claim 3 relates to claim 1 or claim 2.
In the impact beam for automobile doors described above, a shock absorbing portion arranged in a space inside the door is integrally connected to the guard member. The impact absorbing portion in the present invention is above or below the beam body because the impact beam cannot be arranged so as to cover the entire inside of the door due to reasons such as weight reduction and mounting of window glass.
It is arranged in a portion where the impact cannot be blocked by the beam body in the case of a side collision. This shock absorbing portion can be appropriately arranged by utilizing a spare space that does not interfere with other members inside the door. The shock absorbing portion can be made of the same material as the guard member.

[0009]

In the impact beam of the present invention, the beam body is covered by the flexible guard member even when the door is largely deformed and the impact beam projects toward the vehicle interior when a large impact is applied during a side collision. Therefore, the beam main body made of a high-rigidity material does not come into direct contact with the occupant, and the impact of the beam main body is also mitigated by the guard member, thereby further improving safety.

Further, when the guard member is made of foam, it can be attached to the beam body at the same time when the foam is formed by integrally forming the foam body with the beam body. Therefore, the number of manufacturing steps is simplified and the manufacturing is facilitated. In addition, if the guard member is integrally provided with a shock absorbing portion arranged in the space inside the door, the shock absorbing portion absorbs a shock that cannot be sufficiently blocked by the beam main body during a side collision, and The impact on the Since this shock absorbing portion is integrally connected to the guard member, it is possible to effectively use the extra space inside the door in the vicinity of the portion where the impact beam is arranged without providing a special mounting device inside the door. It becomes possible to install.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of an impact beam according to this embodiment, and FIG. 2 is a sectional view taken along the line II-II of FIG. The impact beam of this embodiment includes a beam main body 1 made of a rigid material, a guard member 2 made of a flexible material mounted on the central surface of the beam main body, and a guard member 2.
And an impact absorbing portion 3 integrally connected to the.

The beam main body 1 is composed of a central body portion 11 formed in the shape of a long pipe and mounting portions 12 formed in a flat plate shape at both ends of the central body portion 11, and is integrally made of metal such as iron. Has been formed. Each mounting portion 12 is provided with a mounting hole 13 into which a mounting bolt or the like is inserted. The guard member 2 is made of a rubber foam formed in a cylindrical shape,
The entire surface of the central body portion 11 of the beam body 1 is covered. The guard member 2 is formed by integrally foam-molding a rubber foam material together with the beam body 1.

The shock absorbing portion 3 is made of a rubber foam which is integrally formed at the same time when the guard member 2 is foam-molded. The shock absorbing portion 3 is integrally connected to the lower end side of the guard member 2, and is formed in a substantially rectangular block shape in accordance with the space shape near the impact beam installation location inside the door. . The impact beam of this embodiment configured as described above configures the door 5 of the vehicle through the mounting holes 13 formed in both mounting portions 12 of the beam body 1 as shown in FIGS. 1 and 2. For example, by being attached to the outer panel by bolting or the like, it is arranged so as to extend in the lateral direction in the substantially central portion inside the door 5.

As a result, even when the door 5 is largely deformed and the impact beam pierces the inner panel and projects toward the passenger compartment, the beam body 1 is covered by the flexible guard member 2 when a large impact is applied during a side collision. Therefore, the beam body 1 made of a high-rigidity material does not come into direct contact with the occupant, and the impact of the beam body 1 is mitigated by the guard member 2 to ensure good safety.

Further, even when a large impact at the time of side collision cannot be sufficiently blocked by the beam body 1, the guard member 2
With the shock absorbing portion 3 provided integrally with
The impact on the occupants is reduced. This further improves safety. As described above, in the impact beam of this embodiment, since the beam main body 1 is provided with the guard member 2 made of a flexible material for covering the surface thereof, the impact beam is made of a highly rigid material even when a large impact is applied at the time of a side collision. The beam body 1 can be prevented from directly contacting the occupant, and the guard member 2 can mitigate the impact. This can improve safety.

Further, the guard member 2 is the beam main body 1
In addition, since it is made of a foam formed by integral molding, a good cushioning effect can be exhibited, and the step of attaching to the beam main body 1 can be simplified, so that the beam can be easily manufactured. And the guard member 2 which covers the beam main body 1
The shock absorbing portion 3 integrally connected to the guard member 2.
Since the shock absorber 3 is provided, the shock that cannot be sufficiently blocked by the beam body 1 at the time of a side collision is absorbed by the shock absorbing portion 3, and the shock to the occupant can be mitigated, and further good safety can be secured. .

Since the shock absorbing portion 3 of this embodiment is integrally formed with the guard member 2 and is attached to the beam body 1 via the guard member 2,
It is not necessary to mount only the shock absorbing portion 3, and the shock absorbing portion 3 can be mounted in the vicinity of the portion where the impact beam is disposed by effectively utilizing the extra space inside the door.

[0018]

According to the impact beam of the first aspect of the present invention, since the impact beam has the guard member made of a flexible material that covers at least the central surface of the beam body, even if a large impact is applied at the time of a side collision, the high rigidity material is used. It is possible to prevent the beam main body from directly contacting the occupant, and it is possible to reduce the impact by the guard member, thereby improving safety.

According to the impact beam of the invention of claim 2, since the guard member is made of foam,
By integrally molding with the beam main body when forming the foamed body, the foamed body can be attached to the beam main body at the same time as the formation of the foamed body. Therefore, the number of manufacturing steps can be simplified and the manufacturing can be easily performed. Further, according to the impact beam of the invention of claim 3, since the impact absorbing portion arranged in the space inside the door is integrally connected to the guard member, the guard member is more sufficiently protected by the beam body at the time of a side collision. The impact that cannot be prevented is absorbed by the impact absorbing portion, the impact on the occupant can be mitigated, and further good safety can be secured.

[Brief description of drawings]

FIG. 1 is a front view of an impact beam according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Beam main body 2 ... Guard member 3 ... Impact absorption part 5 ... Door 11 ... Central main body part 12 ... Mounting part 13 ... Mounting hole

Claims (3)

[Claims] 1. An impact beam for an automobile door, which is disposed inside a door of an automobile and protects an occupant in the event of a side collision, the beam main body being made of a rigid material, both ends of which are fixedly held by a door panel, and the beam main body of the beam main body. An impact beam for an automobile door, comprising: a guard member made of a flexible material that covers at least a central surface of the automobile. 2. The impact beam for an automobile door according to claim 1, wherein the guard member is formed of foam. 3. The impact beam for an automobile door according to claim 1, wherein the guard member is integrally provided with a shock absorbing portion arranged in a space inside the door.