JP2574244Y2 - Bumper guard mounting structure for vehicles with airbags - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of vehicles equipped with an airbag, and more particularly to a structure for mounting a bumper guard for protecting a front bumper at a front end of the vehicle.

[0002]

2. Description of the Related Art Today, in order to improve safety in the event of a vehicle collision, an airbag is mainly built in a steering pad,
2. Description of the Related Art It has been practiced to instantaneously inflate an airbag based on detection of a predetermined impact or more to protect a driver. Such a system generally includes an airbag sensor, which is an impact G sensor at the time of a collision, and when it detects a deceleration exceeding a set value, activates an inflator that generates gas necessary to deploy the airbag. This causes the airbag to inflate.

In such an airbag system, the airbag is activated at the time of a serious collision (a collision that may cause serious harm to the occupant), but a minor collision (a repairable minor collision that does not harm the occupant). ) Sometimes it is necessary not to activate the airbag. The serious collision and the minor collision are determined and controlled based on the impact (deceleration) of the body. For example, in the case of a head-on collision,
A vehicle typically absorbs energy in a bumper in a minor collision, and in a bumper and a front side member in a severe collision. Therefore, a clear difference appears in the impact G, which is determined by the above-described airbag sensor and computer.

[0004] In a vehicle, for example, an RV (recreational beagle) or a one-box vehicle, a bumper guard is provided at a front end portion of the vehicle for the purpose of protecting a front bumper. In general, the bumper guard is connected to the vehicle body at two positions on the left and right sides of the front portion of the vehicle by supporting members serving as connecting members, and each of the supporting members is arranged parallel to each other in the vehicle longitudinal direction.

[0005]

However, by mounting such a bumper guard, for example, the impact of a frontal collision is transmitted to the vehicle body via each of the columns serving as connecting members. The applied impact mode may change, which may have an undesired effect on the control for determining the operation of the airbag. For example, even in a slight collision, the airbag sensor detects an impact G that is equal to or greater than a predetermined value, which may cause the airbag to malfunction.

An object of the present invention is to provide a bumper guard mounting structure in which a bumper guard is mounted on a vehicle equipped with an airbag so that the mounting of the bumper guard does not greatly affect the operation system of the airbag system. .

[0007]

SUMMARY OF THE INVENTION The present invention provides a constant
The above impact is detected by an airbag sensor provided at the front of the vehicle
The activated airbag is installed in the vehicle,
Bumper guard to prevent front bumper damage
In the vehicle attached to the part, the bumper guard is
The horizontal part and the three sides of the rectangle should be composed of the horizontal part
And a rising part that rises integrally with the
The two connecting members that connect the card to the vehicle body
And one end of each connecting member is
Inside each side of two sides on both sides of the rising part of the guard
Between the front side members.
A bracket is attached to the crash box protruding from the front end.
It is characterized by being attached .

[0008]

By arranging the connecting member for supporting the bumper guard in such a manner as to be inclined with respect to the front-rear direction of the vehicle, the connecting member is provided, for example, at the time of a frontal collision or the like, as compared with the case where it is disposed along the front-rear direction of the vehicle. Is easily deformed by the impact, and the influence of the bumper guard on the detection / determination system for activating the airbag can be minimized.

[0009]

FIG. 5 schematically shows an airbag operating system of a vehicle equipped with an airbag system. In this example, a pair of front airbag sensors 2 and 2 are provided on the left and right of the front part of the vehicle, and a center airbag sensor 3 is provided in the center part, and based on these detecting the magnitude of the vehicle deceleration, An inflator (not shown) provided near the steering 4 in the vehicle operates, and based on this, the airbag 5 is instantly inflated as shown in FIG.

As a protective member for preventing damage to the front bumper 6 shown in FIG. 5, a bumper guard 8 as shown in FIG. The bumper guard 8 includes a horizontal portion 9 and a rising portion 10 which rises integrally from the horizontal portion 9 so as to form three sides of a quadrilateral. 12 and 12 are attached, and bumper guard 8
Are fixed to the front end of the vehicle body via these columns 12 as shown in FIG.

The front end of the vehicle body is a front cross member 1
3 and left and right front side members 14 connected to both ends of the cross member 13, so that the front bumper 6 is located inside the bumper guard rising section 10. Note that the mounting structure of the front bumper 6 is omitted because it is a general structure.

The pair of right and left columns 12 are connected to the front side member 14 via a bracket 15 and a crash box 16, respectively. More specifically, the column 12 is attached to the bracket 15 by the bolt 17.
The bracket 15 is bolted to the inner surface of the crush box 16 by bolts 18, and the crush box 16 is integrated with the front side member 14 by spot welding or the like. In addition, each support 1
A support 19 is provided below the bumper guard 8 to prevent the bumper guard 8 from swinging. Each support 19 connects the bumper guard horizontal portion 9 and the front cross member 13 via bolts 20 and 21.

As shown in FIGS. 1 and 3, each of the columns 12 of the bumper guard 8 has an angle θ with respect to the vehicle front-rear direction (vehicle traveling direction) in a direction in which the distance between the bumper guard 8 and the vehicle body is smaller. It is arranged at an angle. Note that, when viewed from the horizontal direction, as shown in FIG. 4, it is located substantially in a horizontal plane.

As shown in FIG. 3, the inclination angle θ of the column 12 is set to, for example, about 10 to 30 °. The purpose of giving this angle θ is to ensure that the vehicle deceleration G does not exceed the level at which the airbag is activated during a minor collision in the graph shown in FIG. This is to prevent the rigidity at the time from becoming too large. In other words, at the time of a minor collision, the strut 12 is bent or buckled by the impact load and absorbs the impact from the place where the struts 12 are inclined, so that the impact load at the time of the minor collision is transmitted to the vehicle body side. As a result, malfunction of the airbag during a minor collision is prevented.

In the above embodiment, both the support columns 12 are used.
Are tilted so as to open forward, but each of the columns 12 may be tilted so as to open backward. Further, the structure is not limited to tilting each of the columns 12 in the horizontal plane, but may be configured to be tilted in the vertical plane or three-dimensionally tilted in the horizontal plane and the vertical plane.

In addition, it is needless to say that the present invention can be carried out in various modified forms based on the knowledge of those skilled in the art.

[0017]

According to the present invention, since the connecting member of the bumper guard to the vehicle body is disposed inclined with respect to the longitudinal direction of the vehicle, the connecting member is bent or buckled during a relatively minor collision. Etc. are likely to occur. Therefore, the presence of the bumper guard does not easily affect the operation level of the airbag system, and proper operation of the airbag system is guaranteed. Especially, when one end of each connecting member is
Both sides of the bumper guard rising portion that is directly affected by
It is fixed at each intermediate height position of the two sides of the side, and the other end is
Crash bars projecting from the front end of the front side member
To the rack through a bracket,
The impact at the time of collision is delicately absorbed by the two inclined connecting members.
It is easy to hold, and in the case of a normal collision,
The crash box can absorb the impact. That is,
In the event of a minor collision, malfunction of the airbag is
At the time of collision, two steps by the connecting member and the crash box
A double shock absorption effect on the floor is obtained, helping to improve safety.
Give. In addition, each connecting member is located in front of and behind the vehicle in a horizontal plane.
Inclined in the range of 10 to 30 degrees to the direction, in the vertical plane
Is not inclined, so that it has moderate rigidity and
When moderate flexibility is obtained and it is tilted three-dimensionally
In comparison with the above, the strength design is not complicated. In addition, each connection
Under the material, steady rest for bumper guard steady rest
Supports are provided and each support is horizontal to the bumper guard
Section and the front cross member,
The bumper guard is attached to the vehicle body by the inclined arrangement of the two connecting members.
On the other hand, even if there is a situation where
The stop support can prevent or suppress this. That is,
Organic combination of inclined arrangement of connecting members and anti-sway support
This ensures proper operation of the airbag while ensuring
It can be a bumper guard that hardly occurs.

[Brief description of the drawings]

FIG. 1 is a perspective view of a bumper guard according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a structure for attaching a left portion of the bumper guard to a vehicle body.

FIG. 3 is a plan view thereof.

FIG. 4 is a front view thereof.

FIG. 5 is a schematic diagram of an airbag system of a vehicle.

FIG. 6 is a schematic diagram of an airbag operating state.

FIG. 7 is a graph showing a relationship between deceleration received by a vehicle body and activation of an airbag.

[Explanation of symbols]

 Reference Signs List 6 front bumper 8 bumper guard 9 horizontal part 10 rising part 12 post (connecting member) 13 front cross member 14 front side member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-49-21833 (JP, A) JP-A-57-149636 (JP, A) JP-A-3-34957 (JP, U) JP-A-2- 57752 (JP, U) Shokai 63-34653 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60R 19/44 B60R 19/24-19/36

Claims (3)

(57) [Scope of request for utility model registration] 1. An impact of a certain degree or more at the time of a collision is provided at a front part of a vehicle body.
In a vehicle in which an airbag that is detected and activated by a radiating airbag sensor is mounted in a vehicle and a bumper guard that prevents damage to a front bumper is attached to a front end portion of the vehicle body , the bumper guard has a horizontal portion and a rectangular shape from the horizontal portion. of
And a rising portion that integrally rises to form three sides.
Provided, two connecting members for connecting the Banpagado to the vehicle body is disposed inclined with respect to the vehicle longitudinal direction, and each station
One end of the binding member is on two sides on both sides of the rising portion of the bumper guard
Part is fixed at each intermediate height position, and the other end is
Do not use the crash box protruding from the front end of the door member.
A bumper guard mounting structure for vehicles equipped with airbags, which is mounted via a bracket . 2. The vehicle according to claim 1, wherein each of the connecting members is located in a horizontal plane in front of the vehicle.
Slant in the range of 10 to 30 degrees to the rear direction, in the vertical plane
2. The bumper guard mounting according to claim 1, wherein the bumper guard is not inclined.
Construction. 3. A bumper garage below each of the connecting members.
There is a steady rest support for the steady rest of the
Supports bumper guard horizontal and front cross-men
The bumper garage according to claim 1 or 2, wherein the bumper garage is connected to a bus.
Door mounting structure.