JP2601144Y2 - Body mounting structure of bumper guard bar - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a structure for mounting a bumper guard bar on a vehicle body.

[0002]

2. Description of the Related Art In general, a bumper guard bar is made of a pipe material which is attached so as to cover a lower side and a front side of a bumper. And a pair of legs extending underneath the bumper rein and extending to the rear of the vehicle. These legs are mounted on the radiator core lower mounted between the left and right side members constituting the body frame. It is fixed to.

[0003] The bumper rein to which the main body of the bumper guard bar is fixed is attached to the left and right side members via a bumper stay, and the side members are connected via the bumper rein especially at the time of a high-speed vehicle collision. Thus, the reference design is made so that the impact force applied to the side member from the bumper rein can be effectively absorbed by the side member.

[0004]

The reference design as described above is intended to absorb the impact force applied to the side member from the bumper rein in a normal vehicle having no bumper guard bar. Yes, in the conventional bumper guard bar mounting structure described above, the impact force is applied to the side members from the bumper guard bar via the radiator core and lower,
The input point and the input direction of the impact force to the side member are different from those of the reference design, and there is a disadvantage that the crush mode of the side member is changed and the performance of absorbing the impact force is deteriorated.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a main body attached to a bumper reef fixed between left and right side members constituting a body frame, and a main body mounted on the lower portion of the bumper reef from the main body. And a leg extending into the rear of the vehicle and extending rearward of the vehicle. The leg is provided on a radiator core lower mounted between the side members behind the bumper rein through a bracket.
A body mounting structure for a bumper guard bar fixed to a vehicle, wherein the main body is fixed to the bumper rein while a bracket for the leg and a radiator core lower are provided.
The bolts are fixed to the radiator core when a predetermined force or more is applied to the rear of the vehicle against the bumper guard bar.
LOT is configured to release the fixation of the A, the Burake
The rear end of the kit is bent stepwise upward.
The top surface of the end is superimposed on the radiator core lower,
A slot-shaped notch is formed at the rear in the front and rear direction over the step.
The bolt is located at the front of this notch with the head facing down.
And this shaft is provided on the radiator core lower.
Screwed into the corresponding screw hole, and tighten the bolt
By connecting the bracket to the radiator core lower
Fixing between the legs, between the radiator core lower
And the bracket is fixed.
Notch at back of ket is larger at front than bolt head
Formed at the width while the rear is slightly larger than the shaft of the bolt
It is characterized by being formed in a narrow width .

[0006]

According to the present invention, when the vehicle is in a light collision, the impact force applied to the bumper guard bar is transmitted from the main body to the side members via the bumper reinforce, and from the legs.
It is transmitted to the side members via the radiator core lower radiator co from the leg portion at the time of high-speed collision
When a predetermined force or more impact force is applied to the a-lower legs and La
The fixation between the jetter core and lower is released, and the impact force is transmitted to the side members exclusively through the bumper reinf .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. In FIG. 1, a bumper reef 3 is fixed via a bumper stay 2 between the tip portions of left and right side members 1, 1 (only one of which is shown) constituting a body frame. A bumper guard bar 4 made of a pipe material is attached to the bumper rein 3 so as to cover a lower side and a front side of a bumper (not shown).

The bumper guard bar 4 has a substantially inverted U-shaped main body 4a (only one half is shown in the figure) which is bolted to the front surface of the bumper rein 3 via a bracket 5.
A pair of legs 4b, 4b (only one is shown in the figure) extending from each end of the character to the lower side of the bumper reef 3 and extending rearward of the vehicle. These legs 4b, 4
b is bolted to the radiator core lower 6 attached between the left and right side members 1 and 1 via a bracket 7. The radiator core lower 6 constitutes a part of the body frame. The bracket 5 is fixed to the main body 4a by welding, and the bracket 7 is fixed to the legs 4b by welding.

Here, the main body 4a is fixed to the bumper rein 3 with a bolt (not shown) via the bracket 5 in the longitudinal direction of the vehicle.
The fixing of the bolts between the bracket 7 and the radiator core lower 6 is performed by releasing the fixing to the radiator core lower 6 when a predetermined force or more is applied to the bumper guard bar 4 behind the vehicle due to a collision or the like. Such a bolt fixing structure will be described below with reference to FIG.

In FIG. 2, a rear portion 7a of the bracket 7 is bent stepwise upward, and one end of a radiator core lower 6 (not shown in FIG. 2) is formed on an upper surface 7b. Superimposed on the part. An elongated hole-shaped notch 8 is formed in the rear portion 7a in the front-rear direction over the step portion, and a bolt 9 is inserted into a front portion 8a of the notch 8 with the head portion 9a facing downward and the shaft portion 9b. The shaft portion 9b is screwed into a corresponding screw hole provided in a part of the radiator core lower 6, and is fixed between the bracket 7 and the radiator core lower 6 by tightening a bolt 9, that is, each leg. It is configured to fix the portion 4 b and the radiator core lower 6.

The notch 8 in the rear portion 7a of the bracket 7 has a front portion 8a formed to have a width larger than the head portion 9a of the bolt 9, while a rear portion 8b has a width slightly larger than the shaft portion 9b of the bolt 9. Have been.

With the above structure, when a rearward force is applied to the bumper guard bar 4 due to a collision or the like, that is, when a force is applied to each leg 4b in the direction of the arrow shown in FIG. In h), the fixing force due to the tightening of the bolt 9 overcomes the force due to the collision, and the bumper guard bar 4 is held at a fixed position with respect to the radiator core lower 6. It should be noted that in such a light collision, the bumper rein 3 to which the main body 4a of the bumper guard bar 4 is fixed is originally designed to be strong enough not to break.

On the other hand, at the time of a high-speed collision (about 50 km / h), the bumper guard bar 4 retreats together with the bumper reef 3, and the impact force is absorbed by the side members 1, 1. Is bumper guard bar 4
Each leg 4b of the bumper guard bar 4 is moved forward with relative movement of the bolt 9 against the radiator core lower 6 by the bolt 9 with forward movement along the notch 8 of the shaft 9b of the bolt 9 and the radiator core lower. 6 moves backward. For this reason, the impact force is not transmitted to the radiator core / lower 6 and the impact force is transmitted exclusively to the side members 1 and 1, so that the input point and the input direction of the impact force to the side members 1 and 1 are used as a reference. Since it is maintained as designed and the crush mode of the side members 1 and 1 is kept unchanged, it is possible to maintain good impact force absorption performance.

The notch 8 in the rear part 7a of the bracket 7 is
a is formed to be wider than the head 9a of the bolt 9, the bolt 9 is temporarily fixed to the radiator core / lower 6, and the head 9a of the bolt 9 is passed through the front portion 8a of the notch 8. When the bumper guard bar 4 is moved forward, the shaft 9b of the bolt 9 is automatically inserted into the rear portion 8b of the notch 8, and the bolt 9 can be tightened in this state, so that the assembly is simplified and the workability is improved. Has the advantage of

[0015]

[Effects of the Invention] In the present invention, the impact force at the time of a high-speed collision of the vehicle is transmitted to the side members exclusively through the bumper reinforce. Since the direction is maintained according to the reference design and the crush mode of the side members is kept unchanged, there is an advantage that the absorption performance of the impact force can be favorably maintained. Also, bolt the radiator
-At the front of the notch as a temporary fixing state for the core lower
Move the bumper guard bar forward through the head of the bolt
The bolt shaft automatically inserts into the rear of the notch.
The bolts can be tightened in this state,
This has the advantage of being simple and improving workability.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing a vehicle body mounting structure of a bumper guard bar according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a fixing structure of a bracket of a bumper guard bar and a radiator core lower.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side member 3 Bumper reinf 4 Bumper guard bar 4a Body 4b Leg 5,7 Bracket 6 Radiator core / lower 8 Notch 9 bolt

Claims (1)

(57) [Scope of request for utility model registration] 1. A main body attached to a bumper reef fixed between left and right side members constituting a body frame, and a leg extending from the main body to a lower side of the bumper reef and extending rearward of the vehicle, The legs are attached to the radiator core lower mounted between the side members behind the bumper rein through brackets.
A vehicle body mounting structure of a bumper guard bar fixed by bolts , wherein the body is fixed to the bumper rein while a bracket of the leg and a radiator core
When the bumper guard bar is subjected to an impact force exceeding a predetermined force on the rear of the vehicle, the radiator
A is set to release the lock with the lower
The back of the ket is bent stepwise upwards,
The upper surface of the end overlaps the radiator core lower
At the rear, a slot-like notch is formed in the front and rear direction over the step
With a bolt in front of this notch with the head facing down
The shaft is inserted, and this shaft is connected to the radiator core lower.
Screw into the corresponding screw holes provided and tighten the bolts
Bracket and radiator core lower by attaching
Between the legs, the radiator core lower and
And is configured to perform the fixing between
Notch at rear of bracket is larger at front than bolt head
While the rear part is slightly smaller than the bolt shaft
A body mounting structure for a bumper guard bar, which is formed with a large width .