JP3962967B2 - Pedal bracket mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for mounting a pedal bracket used for rotatably supporting a brake pedal arm or the like of an automobile to a vehicle body.
[0002]
[Prior art]
In automobiles, the center of the steering wheel and the brake pedal arm are usually installed at the center of the driver's seat in consideration of the operability of the steering wheel and brake pedal. The connected steering shaft and brake pedal arm are often arranged corresponding to each other along the longitudinal direction of the vehicle body. In such an arrangement, the steering universal joint and the brake pedal arm that transmit the turning force of the steering shaft to the turning force transmission shaft inevitably correspond to each other along the longitudinal direction of the vehicle body. Will be arranged side by side.
[0003]
Therefore, when an excessive impact force toward the rear of the vehicle is applied to the front of the vehicle body, the brake pedal arm is moved along with the movement of the dash panel separating the vehicle compartment and the engine room to the rear of the vehicle. It moves to the rear of the vehicle and acts to push down the steering universal joint to the rear of the vehicle. Then, the steering shaft is retracted in response to the rearward movement of the steering universal joint, and the steering wheel is moved rearward and upward (backward obliquely upward) accordingly. It may be difficult to perform the steering operation by.
[0004]
For this reason, conventionally, in order to avoid such a problem, a part of the brake pedal arm (for example, a part indicated by a slanted line W in FIG. 2) is largely bent and the bent part is disposed so as to escape from the steering universal joint. Thus, the actual situation is to avoid interference between the brake pedal arm and the steering universal joint when the impact force is applied.
[0005]
[Problems to be solved by the invention]
However, in the case of adopting the conventional configuration as described above, in order to ensure that the brake pedal arm has a sufficiently large rigidity, it is necessary to increase the thickness of the brake pedal arm because the brake pedal arm is bent greatly. There is a need to. Therefore, there is a problem that the weight increases and the cost increases.
[0006]
The present invention has been made to solve such problems, and the object thereof is to reduce the degree of bending (bending amount) of the pedal arm, which is advantageous in terms of strength (rigidity) of the brake pedal arm. Pedal bracket mounting structure that can reduce the weight and cost, and can increase the degree of freedom of layout of the steering universal joint and related parts of the brake mechanism disposed around the steering universal joint. Is to provide.
[0007]
As one of the conventional examples of the pedal bracket mounting structure, a slide bracket fixed to the pedal bracket and an instrument panel reinforcement are attached to release the coupling between the pedal bracket and the instrument panel reinforcement when an excessive impact force is applied. However, with such a structure, the pedal bracket flutters to ensure that the brake pedal force is applied to the brake operating system. You may not be able to tell Therefore, one of the objects of the present invention is to make a structure that does not cause such a problem.
[0008]
[Means for Solving the Problems]
In order to achieve the above-described object, in the present invention, a long hole for inserting a bolt is provided in a pedal bracket that rotatably supports a pedal arm, and the longitudinal direction of the elongated hole for inserting a bolt is set to the longitudinal direction of the vehicle body. By setting so as to incline, the bolt insertion long hole is arranged to move away from the steering universal joint of the steering shaft toward the vehicle body side toward the rear of the vehicle body. Under this arrangement state, the bolt insertion long hole A bolt is inserted through the bolt bracket, and the pedal bracket is fastened and fixed to the vehicle body by using the bolt. The bolt insertion long hole is formed in the bolt by the guide action of the bolt insertion long hole and the bolt. The bolt insertion long hole is relatively movable along the longitudinal direction of the bolt insertion long hole, and the bolt insertion long hole and the bolt It is set to the door non-withdrawal.
In the present invention, a U-shaped sliding plate is used for tightening and fixing the pedal bracket to the vehicle body, and the bolt of the pedal bracket is inserted between a pair of opposed pieces of the sliding plate. The bolt is inserted into the bolt insertion hole formed in the pair of opposed pieces of the sliding plate and the bolt insertion elongated hole of the pedal bracket, with the peripheral portion of the passage long hole being sandwiched, and the vehicle body is inserted into the vehicle body. The pedal bracket is tightened and fixed.
In the present invention, a resin molded product is used as the sliding plate.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0010]
1-4 is for demonstrating the pedal bracket attachment structure which concerns on 1st Embodiment of this invention. As shown in these drawings, the brake pedal 1 of the automobile and the steering universal joint 3 of the steering shaft 2 are arranged corresponding to each other, and a pedal bracket 4 for attaching the brake pedal 1 to the vehicle body side is provided. The dash panel 7 that partitions between the vehicle compartment 5 and the engine room 6 and the cowl 8 at the lower part of the front window are attached by bolting.
[0011]
The arrangement of automobile parts related to the pedal bracket 4 will be described as follows. First, as shown in FIG. 2, the brake booster 9 is disposed in the engine room 6, and the pedal bracket 4 is disposed in the vehicle compartment 5. Under this arrangement state, the brake booster 9 and the pedal bracket 4 are dashed. The panel 7 is fastened together with bolts. A brake master cylinder 10 connected to the brake booster 9 is disposed in the engine room 6, and a push rod 9 a of the brake booster 9 extends through the dash panel 7 and projects into the vehicle compartment 5.
[0012]
As shown in FIGS. 1 to 3, the brake pedal 1 includes a brake pedal arm 1a formed by appropriately bending a narrow steel plate material, and a pedal pad 1b attached to the lower end of the brake pedal arm 1a. The upper end of the brake pedal arm 1a is rotatably attached to a support shaft 11 installed on the pedal bracket 4. And the brake pedal 1 is always urged | biased by the urging | biasing force of the return spring 12 (refer FIG. 3) with which the said spindle 11 was mounted | worn in the direction which returns to an initial position. Further, a clevis 13 is engaged with the brake pedal arm 1 a as shown in FIG. 2, and a push rod 9 a of the brake booster 9 is arranged corresponding to the clevis 13.
[0013]
On the other hand, a steering shaft 2 having a steering wheel (not shown) connected to an upper end portion thereof is disposed in an inclined state at a vehicle rear portion corresponding to the brake pedal 1 and a lower end portion of the steering shaft 2 on the vehicle body front side. A steering universal joint 3 that connects the upper end portion of the rotational force transmission shaft 14 is disposed in the vicinity of the vehicle pedal side of the brake pedal arm 1a described above.
[0014]
Here, the mounting structure of the pedal bracket 4 to the cowl 8 will be described in detail as follows. First, the pedal bracket 4 is a part formed by bending a steel plate into a U-shaped cross section. As shown in FIGS. 1 to 4, the ceiling portion 15 of the pedal bracket 4 is raised one step upward at the rear edge portion. A mounting plate portion 16 is formed. The mounting plate portion 16 of the pedal bracket 4 that rotatably supports the brake pedal arm 1a has a bolt insertion long hole 17 formed of a long hole extending in a longitudinal shape, as clearly shown in FIGS. Is provided. Further, the longitudinal direction (extending direction) of the bolt insertion long hole 17 in a state where the pedal bracket 4 is assembled to the cowl 8 is configured to be inclined with respect to the longitudinal direction of the vehicle body. Thus, the bolt insertion elongated hole 17 is arranged so as to move away from the steering universal joint 3 of the steering shaft 2 toward the vehicle body side as it goes rearward of the vehicle body. Under such an arrangement state, as shown in FIG. 4, the bolt insertion elongated hole 17 corresponds to the end portion on the rear side of the vehicle body, that is, the end portion α on the side farther from the steering universal joint 3 toward the vehicle body side. A metal washer 18 having a relatively large size is disposed at a position where the bolt 19 is inserted into the bolt insertion hole 18a of the washer 18 and the bolt insertion long hole 17 of the pedal bracket 4 at the end portion α. By tightening the nut 20, the rear edge 15a of the pedal bracket 4 is fastened and fixed to the cowl 8 (not shown in FIG. 4).
[0015]
Thus, when the pedal bracket 4 is attached to the cowl 8 and the dash panel 7, the bolt insertion long hole 17 in the attachment plate portion 16 of the pedal bracket 4 attached to the cowl 8 is in the longitudinal direction of the vehicle body. The bolt 19 is inserted into the bolt insertion elongated hole 17 at the rear end side portion and at the end portion α which is away from the steering universal joint 3 toward the vehicle body side. It is like that.
[0016]
According to the pedal bracket mounting structure having such a configuration, it is possible to avoid the brake pedal 1 from interfering with the steering universal joint 3 when an excessive impact force acts on the vehicle body front side toward the vehicle body rear side. It becomes possible. That is, when the dash panel 7 is moved to the rear of the vehicle body due to an excessive impact force, the deformation amount of the tightening fixing portion of the pedal bracket 4 on the dash panel 7 side is tightened on the pedal bracket 4 on the cowl 8 side. Since it is larger than the deformation amount of the fixed portion, the pedal bracket 4 is pushed down to the rear of the vehicle body. At this time, the bolt insertion elongated hole 17 is an elongated elongated hole as described above. Due to the guide action of the insertion long hole 17 and the bolt 19, the fastening fixing portion of the pedal bracket 4 on the cowl 8 side is along the longitudinal direction of the bolt insertion long hole 17 (direction oblique to the longitudinal direction of the vehicle body). Will be moved (slid).
[0017]
More specifically, in this case, the side surface 17a (see FIG. 4) in the longitudinal direction of the bolt insertion long hole 17 of the pedal bracket 4 is relative to the bolt 19 fixedly attached to the cowl 8. Accordingly, the rear end portion of the pedal bracket 4 is moved as the bolt insertion long hole 17 is moved relative to the bolt 19 along the longitudinal direction of the bolt insertion long hole 17. In FIG. 1 (B), the bolt 19 is moved in the direction indicated by the arrow M (the direction away from the steering universal joint 3 toward the vehicle body side), and the engagement position of the bolt 19 with respect to the bolt insertion elongated hole 17 is indicated by the arrow in FIG. This is the position indicated by β (the end portion near the steering universal joint 3). Thus, it is possible to avoid the occurrence of interference of the brake pedal arm 1a with the steering universal joint 3 by the escape movement of the pedal bracket 4 from the steering universal joint 3 by the guide action of the bolt insertion long hole 17 and the bolt 19. it can. In this embodiment, the relatively large washer 18 is fastened together, so that the pedal bracket 4 can be moved (slid) smoothly due to the presence of the washer 18. On the other hand, as shown in FIGS. 1 (A) and 1 (B), FIG. 4 and FIG. 5 (A), an excessive impact force toward the rear side of the vehicle body does not act on the front portion of the vehicle body. The bolt insertion long hole 17 and the bolt 19 cannot be detached when an excessive impact force toward the rear side of the vehicle body is applied.
[0018]
Thus, if the pedal bracket mounting structure of the present embodiment is adopted, interference between the steering universal joint 3 and the brake pedal arm 1a can be prevented, so that both the members 3 and 4 can be arranged along the longitudinal direction of the vehicle body. In addition, the bending amount of the brake pedal arm 1a, that is, the bending amount S (see FIG. 1A) for avoiding interference with the steering universal joint 3 can be reduced.
[0019]
5A and 5B show a pedal bracket mounting structure according to a second embodiment of the present invention. In this embodiment, a U-shaped sliding plate is used instead of the washer 18. 22 is used. Other configurations are the same as those of the first embodiment described above. Accordingly, in FIGS. 5A and 5B, the same parts as those in FIGS.
[0020]
The sliding plate 22 used in the present embodiment includes a pair of opposed piece portions 22a and 22b opposed to each other in parallel with an interval substantially corresponding to the plate thickness of the pedal bracket 4 mounting plate portion 16, and the pair of opposed pieces. A U-shaped metal sliding member provided with a connecting portion 22c for connecting one end portions of the portions 22a and 22b to each other. The pair of opposed piece portions 22a and 22b have bolts at locations facing each other. Each insertion hole 23 is formed.
[0021]
On the other hand, the mounting plate portion 16 provided at the rear edge portion of the ceiling portion 15 of the pedal bracket 4 is provided with the bolt insertion elongated holes 17 extending in the oblique direction as described above, and around the mounting plate portion 16. An insertion port 24 formed by cutting out a part of the stepped portion is formed. Thus, as shown in FIG. 5A, the peripheral portion of the bolt insertion long hole 17 in the pedal bracket 4 is sandwiched between the pair of opposed pieces 22a, 22b of the sliding plate 22. Then, the bolt 19 is inserted into the bolt insertion hole 23 formed in the pair of opposed pieces 22a and 22b of the sliding plate 22 and the bolt insertion long hole 17 of the pedal bracket 4, so that the pedal bracket 4 to the cowl 8 is inserted. Are fastened and fixed (joint fastening with the sliding plate 22). Thus, when an excessive impact force is applied, the fluctuating state as shown in FIG. 5B is caused by the guide action of the bolt 19 and the bolt insertion long hole 17 as in the case of the first embodiment described above. Thus, interference of the pedal bracket 4 with the steering universal joint 3 is avoided.
[0022]
According to the pedal bracket mounting structure thus configured, interference between the pedal bracket 4 and the steering universal joint 3 can be prevented as in the case of the first embodiment described above, and the following advantages can be obtained. There is. That is, when the washer 18 having a relatively large size is used as in the first embodiment described above, even if management for setting the tightening torque of the bolt 19 to a specified value is performed, a desired impact force is used. Although it is difficult to slide, if the U-shaped metal sliding plate 22 is used as in the present embodiment, the desired impact can be obtained even if the tightening torque of the bolt 19 is slightly deviated from the specified value. The sliding plate 22 can be slid by force. That is, the sliding plate 22 has a U-shape in a side view and has a connecting portion 22c, and the tightening torque of the bolt 19 has little influence on the pressing force between the sliding plate 22 and the pedal bracket 4. This is because it is not necessary to strictly manage the tightening torque of the bolt 19.
[0023]
Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various modifications and changes can be made based on the technical idea of the present invention. For example, in the first and second embodiments described above, the metal washer 19 and the sliding plate 22 are used, but it is also possible to use a resin molded part (resin part). In this case, since the frictional resistance between the resin washer 19 or the sliding plate 22 and the pedal bracket 4 is reduced, the pedal bracket 4 can be slid more smoothly when the impact force is applied. Needless to say, the present invention can be applied not only to the case where the pedal bracket 4 is attached to the cowl 8, but also to the case where the pedal bracket 4 is attached to a vehicle body portion other than the cowl 8.
[0024]
【The invention's effect】
According to the first aspect of the present invention, a long hole for bolt insertion is provided in the pedal bracket that rotatably supports the pedal arm, and the longitudinal direction of the long hole for bolt insertion is inclined with respect to the longitudinal direction of the vehicle body. by setting bolt insertion long hole toward the rear of the vehicle body is arranged as away to the side of the vehicle from the steering universal joint of the steering shaft, and inserting bolts under depot belt inserting slot of the arrangement The pedal bracket is fastened and fixed to the vehicle body using the lever bolt, and the bolt insertion long hole is in the longitudinal direction of the bolt insertion long hole with respect to the bolt by the guide action of the bolt insertion long hole and the bolt. relatively movable along, and, since the bolt insertion long hole and the bolt is obtained by a irremovably, the vehicle body rear side in the vehicle body front portion When an excessive impact force is applied, the pedal bracket is moved rearward by the guide action of the bolt insertion elongated hole extending in the oblique direction and the bolt inserted through the elongated hole as described above. Along with this, the steering shaft fluctuates away from the steering universal joint to the side of the vehicle body. Therefore, it is possible to avoid interference between the pedal arm and the steering universal joint when the impact force is applied. In addition, if it is configured to have such an interference avoidance function, it is possible to set the bending amount of the bending portion provided in the pedal arm to prevent interference with the steering universal joint, and thus the strength of the pedal arm. This is advantageous, and the weight and cost can be reduced. Further, when the pedal arm is a brake pedal arm, the degree of freedom in layout between a brake mechanism such as a brake booster and a brake master cylinder arranged corresponding to the brake pedal arm and the steering universal joint is increased. Can be increased. Even when such a configuration is adopted, the pedal bracket does not fluctuate and the pedal effort can be reliably transmitted.
[0025]
According to the second aspect of the present invention, a U-shaped sliding plate is used to fasten and fix the pedal bracket to the vehicle body, and a bolt of the pedal bracket is interposed between a pair of opposed pieces of the sliding plate. With the peripheral part of the insertion hole inserted, the bolts are inserted into the bolt insertion holes formed in the pair of opposed pieces of the sliding plate and the bolt insertion slots of the pedal bracket, respectively. Since the bracket is fastened and fixed, the following advantages can be obtained in addition to the same effects as described above. In other words, the sliding plate is a U-shaped and highly rigid member, and the bolt tightening torque does not significantly affect the crimping force between the sliding plate and the pedal bracket. There is an advantage that the sliding plate can be slid with a desired impact force even if it is slightly deviated. Therefore, it is not necessary to strictly manage the bolt tightening torque, and the bolt tightening torque can be easily managed.
[0026]
In the present invention according to claim 3, since a resin molded part is used as the sliding plate, the frictional resistance between the resin sliding plate and the pedal bracket is reduced, and an impact force is applied. The pedal bracket can be operated (slid) more smoothly.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining a pedal bracket mounting structure according to a first embodiment of the present invention, and FIG. 1 (A) shows an arrangement relationship between main parts of a steering operation unit and a brake operation unit of an automobile. FIG. 1B is a plan view showing a state when an excessive impact force toward the rear side of the vehicle body is applied to the front portion of the vehicle body.
FIG. 2 is a side view seen from the direction indicated by an arrow X in FIG.
FIG. 3 is a front view seen from the direction indicated by an arrow Y in FIG. 2;
FIG. 4 is an exploded perspective view showing a mounting portion of the pedal bracket to the cowl of the automobile.
FIG. 5 is an exploded perspective view illustrating a pedal bracket mounting structure according to a second embodiment of the present invention, and FIG. FIG. 5B is a perspective view showing a state when an excessive impact force toward the rear side of the vehicle body is applied to the front portion of the vehicle body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Brake pedal 1a Brake pedal arm 1b Pedal pad 3 Steering universal joint 2 Steering shaft 4 Pedal bracket 7 Dash panel 8 Cowl 9 Brake booster 10 Brake master cylinder 15 Ceiling part 16 Mounting plate part 17 Bolt insertion long hole 17a Side face 18 Washer 18a Bolt insertion hole 19 Bolt 20 Nut 22 Sliding plates 22a, 22b Opposing piece 22c Connecting portion 23 Bolt insertion hole

Claims (3)

Bolt insertion elongated holes are provided in a pedal bracket that rotatably supports the pedal arm, and the longitudinal direction of the bolt insertion elongated holes is set so as to be inclined with respect to the vehicle longitudinal direction, thereby moving toward the rear of the vehicle body. The bolt insertion long hole is arranged so as to move away from the steering universal joint of the steering shaft toward the vehicle body side. Under this arrangement state, the bolt is inserted into the bolt insertion long hole, and the pedal is used by using the bolt. The bracket is fastened and fixed to the vehicle body, and the bolt insertion long hole extends along the longitudinal direction of the bolt insertion long hole with respect to the bolt by the guide action of the bolt insertion long hole and the bolt. relatively movable, and is characterized in that the irremovably and the said bolt insertion long hole bolt Te Bae Le bracket mounting structure.   A U-shaped sliding plate is used for tightening and fixing the pedal bracket to the vehicle body, and a peripheral portion of the elongated hole for inserting the bolt in the pedal bracket between a pair of opposed pieces of the sliding plate. With the bolt inserted into the bolt insertion holes formed in the pair of opposed pieces of the sliding plate and the bolt insertion long holes of the pedal bracket, respectively, and tightening the pedal bracket to the vehicle body. 2. The pedal bracket mounting structure according to claim 1, wherein the fixing is performed.   The pedal bracket mounting structure according to claim 2, wherein a resin molded part is used as the sliding plate.

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