JP3496707B2 - Pedal support structure - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a pedal support structure.

[0002]

2. Description of the Related Art In a cab-over type vehicle having a brake booster, a normal pedal support and a brake booster are integrally formed, and they are arranged so as to face the dash panel and the front and rear of the vehicle body. It is designed to drive the brake booster.

The structure of a conventional brake pedal support is as follows.
As shown in FIGS. 6 and 7, a pair of left and right support plates 1 and 2, a brake booster bracket that is welded to approximately central portions of the support plates 1 and 2 to connect them and to mount and fix the brake booster 11. 3,
A reinforcement 4 and a brake booster bracket 3 which are welded to the upper portions of the support plates 1 and 2 to connect them.
Is disposed just below the support plate 1, 2 and is welded to the support plates 1 and 2 to connect them, and the stop lamp switch 1
0, and a reinforcement 6 welded to the lower ends of the support plates 1 and 2 to connect them.

Both ends of the shaft 8 of the brake pedal are axially supported by the support plates 1 and 2, and the upper portion of the brake pedal 9 is fixed to the approximate center thereof. Brake booster 11
Is mounted on the brake booster bracket 3 and four mounting bolts (not shown) projecting from the mounting portion 11a are respectively inserted through the mounting holes 3a and fixed by nuts (not shown). Is connected to the upper end of the brake pedal 9.

Since the brake pedal support having such a structure usually doubles as the attachment of the steering column 18, the upper portions of the support plates 1 and 2 are fixed to the front deck 15 of the vehicle body, and the reinforcement 6 is fixed to the floor panel 1.
It is fixed to a bracket 17 provided on the vehicle body 6 and supported on the vehicle body side. The upper portion of the tearing column 18 is supported by the bracket 19 welded to the upper end portions of the support brackets 1 and 2, and the lower portion is supported by the tip portion of the brake booster bracket 3. When the brake pedal 9 is depressed, the operating rod 12 is pushed and the brake booster 11 operates.

[0006]

However, since the brake pedal support having the above-mentioned structure has a strong structure, it is less likely to be deformed by an external input, and is normally arranged so as to face the driver. Therefore, there is a problem that the brake pedal may interfere with the driver against an impact from the front of the vehicle. Further, since the number of parts is large, there is a problem that the cost becomes high and the weight becomes heavy.

For this reason, in the present invention, the pedal support is offset as much as possible from the seating center of the occupant and divided into left and right parts, and the pedal is also offset from the steering column so that the driver's knees or An object of the present invention is to provide a pedal support structure that reduces interference between the foot and the pedal.

[0008]

In order to achieve the above object, according to claim 1 of the present invention, the pedal support is one side (vehicle body side) having a high support rigidity to the vehicle body when a load is applied from the front of the vehicle. ) The support plate is largely retracted, and the support plate on the other side (center side of the vehicle body), which has relatively low support rigidity to the vehicle body, has a small amount of backward movement because the vehicle body is deformed.
Since the pedal is offset to the side of the support plate where the amount of backward movement is small, the pedal is displaced in a direction away from the driver and interference with the driver is prevented.

According to the second aspect of the present invention, the support plate on one side having high support rigidity is retracted, the connection between the support plate and the booster is released, and one end of the pedal shaft is disengaged and separated. This prevents the pedals from interfering with the driver. In claim 3, the pedal support is offset to one side of the steering column so that it does not face the seating position of the driver, and the pedal is arranged between the pedal support and the steering column. When the booster or the pedal is detached from the side support plate, they are prevented from interfering with the driver.

According to the present invention, it is possible to construct a lightweight, inexpensive brake booster integrated brake pedal support having a small number of parts.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be exemplarily described in detail below with reference to the drawings. FIG. 1 shows a pedal support structure as an embodiment of the present invention, a front view of left and right support plates, FIG. 2 is an enlarged cross-sectional view of a support portion of a shaft of FIG. 1, and FIG. 3 is a left and right support of FIG. A side view of the plates connected by a booster, Fig. 4 shows
4 shows a plan view of FIG. 3. A cab-over type vehicle is suitable as the vehicle to which the pedal support structure is applied, but the scope of the invention is not limited to the cab-over type vehicle.

In FIGS. 1 to 4, a brake pedal support 20 as a pedal support has a pair of left and right support plates 21 and 22, and upper portions 21a and 22a and lower portions 21b and 2 of these support plates 21 and 22.
2b is a mounting portion to the vehicle body side, and each central portion 21c, 22
c is a brake booster 1 as a booster (power booster)
It is supposed to be the mounting part of 1. Support plates 21, 22
Is formed by bending the front edge (front side of the vehicle body) and the rear edge (dash panel side) of the flat plate outside or inside at a right angle,
Upper portions 21a and 22a are respectively bent outward, and a central portion 21
c, 22c and lower parts 21b, 22b are respectively bent inward.

The support plates 21 and 22 have an upper portion 21.
a, 22a have mounting holes 21d, 22d and lower portions 21b, 2
Two mounting grooves 21e and 22 with the vehicle body lined up and down on 2b
e are vertically arranged in the central portions 21c and 22c, and two mounting grooves 21f and 22f for the brake booster 11 are provided. Each of the mounting grooves 21e, 22e, 21f, 22f has a shape in which one end of a long hole that is long in the lateral (horizontal) direction is opened at the end surface. Further, in the lower portions 21b and 22b of the support plates 21 and 22, the shaft holes 21g and 22 of the shaft 23 are formed.
g is provided.

As shown in FIG. 3, the brake booster 11
Includes four mounting bolts 13 that are provided on the mounting portion 11a so as to project in the upper and lower left and right directions.
Are inserted into the respective mounting grooves 21f and 22f of the central portions 21c and 22c, and are fixed by the nuts 14, respectively. As a result, the left and right support plates 21 and 22 are connected by the brake booster 11. That is, the brake booster 1
1 has a function as a reinforcement that connects the left and right support plates 21 and 22 in addition to the original function. Then, the left and right support plates 21 and 22 are accurately positioned and fixed to the brake booster 11.

The brake booster 11 is arranged on one side of the mounting position of the steering column indicated by the one-dot chain line L in FIG. 4, for example, on the right side at a position offset to the outside (door side) from the right knee position of the driver. Set up. Therefore, the upper portion of the brake pedal 24 is welded and fixed to the support plate 21 side (steering column side) of the shaft 23, and is greatly offset so as to extend obliquely downward from the vicinity of the root toward the seating center of the driver. Is formed. The bracket 25 is welded to the substantial center of the shaft 23 and is connected to the tip of the operating rod 12 of the brake booster 11. The brake pedal return spring is omitted in the figure.

As shown in FIG. 2, the shaft 23 has one end 2
3a is rotatably supported in the shaft hole 21g of the support plate 21, and is immovable in the axial direction by the clip 26 attached to the annular groove 23c formed at the end and the upper portion 24b of the brake pedal 24 (cannot be detached). ) And the other end 23
The shaft b is rotatably supported in the shaft hole 22g of the support plate 22 via a bearing 27 and is slidable (removable) in the axial direction. This allows the shaft 23 to disengage the brake pedal 24 when the support plate 22 is largely displaced and retracted so that the end portion 23b is disengaged from the shaft hole 22g.

A bracket 30 is welded to the lower rear edge of the support plate 21, the stop lamp switch 10 is attached to the bracket 30, and the tip of the operator contacts a dog 31 provided on the brake pedal 24. It is touched. This stop lamp switch 10
When the brake pedal 24 is depressed and the dog 31 is separated from the operator, the switch is turned on. In this way, the brake master integrated brake pedal support 20 is configured.

The brake pedal support 20 is, for example,
As shown in FIGS. 3 and 4, it is arranged behind the headlamp support 44 on the right side of the vehicle body and is supported by the rear wall 44 a of the headlamp support 44. The right edge of the front panel 41 of the vehicle body 40 is welded to the right fender shield outer 42, the front edges of the fender shield inner 43, and the front edge of the right side wall 44b of the headlamp support 44, and the side wall 44b and the fender. Shield inner 43
And are welded together. The left side wall 44c of the headlamp support 44 has a front edge welded to the inner surface of the front panel 41. Further, the side wall 44c is provided with a large hole 44d for an outside air introducing duct.

Brackets 45 and 46 for mounting the brake pedal support 20 are welded to the upper and lower positions of the rear wall 44a of the headlamp support 44. The upper bracket 45 has mounting holes (not shown) corresponding to the mounting holes 21d, 22d of the upper portions 21a, 22a of the left and right support plates 21, 22 of the brake pedal support 20.
Is provided in the lower bracket 46, and the mounting grooves 2 of the lower portions 21b and 22b of the support plates 21 and 22 are attached to the lower bracket 46.
Mounting holes (not shown) are formed corresponding to 1e and 22e.

The brake pedal support 20 is
The upper portions 21a and 22a of the support plates 21 and 22 are attached to the bracket 45, and the lower portions 21b and 22b are attached to the bracket 46.
Are fixed by bolts 47 and nuts 48 through the respective mounting holes. That is, the brake pedal support 20
Are fixed to the vehicle body 40 at six points above and below. Thereby, the support rigidity of the brake pedal support 20 to the vehicle body 40 can be improved.

Further, the left and right support plates 21, 22
Is a mounting bolt 13 and a nut 1 for the brake booster 11.
Since there is no welding distortion accumulated between the parts because they are connected by 4, the upper parts 21a, 22a and the lower parts 21b, 22
There is no positional deviation of the mounting holes of b, and the mounting accuracy to the brackets 45 and 46 on the vehicle body 40 side is secured. The operation will be described below.

When the brake pedal 24 is stepped on, the shaft 23 rotates accordingly, and the bracket 25 pushes the operating rod 12 to move the brake booster 1.
Drive 1 At the same time, the brake lamp switch 10 is activated to turn on a brake lamp (not shown). The brake pedal support 20 improves the rigidity of the brake pedal 24 by receiving the reaction force between the brake pedal 24 and the brake booster 11 by the single member of the support plates 21 and 22 when the brake pedal 24 is depressed.

The headlamp support 44 has a side wall 44b.
Is welded to the fender shield outer 42 and the fender shield inner 43, so that the side wall 44b has a high rigidity, while the side wall 44c has a large hole 44d, so that the side wall 44c has a low rigidity. That is, the side wall 44b of the headlamp support 44 has higher support rigidity than the side wall 44c. Therefore, when the vehicle body 40 receives an impact from the front, the side wall 44c of the headlamp support 44 is largely deformed (crushed) to absorb the impact load, while the side wall 44b is less deformed (crushed) and has a retreat amount. Few. Therefore, the input F1 to the right side support plate 22 of the brake pedal support 20 becomes larger than the input F2 to the left side support plate 21. As a result, as shown by the dotted line in FIG. 5, in the pedal shaft 23, the end 23b side is inclined rearward of the vehicle body, and the brake pedal 24 is not supported by the support plate 2
Tread 2 of the pedal due to the large offset to the 1 side
4a rotates in the direction of arrow A and moves away from the driver's feet to prevent interference with the driver's feet.

Further, when an input is applied to the brake pedal support 20, the right side support plate 22 receives a force expanding outward as shown by a chain double-dashed line, and the lower portion 22b and the central portion 2
2c is deformed in the direction of arrow B, and as a result, the mounting groove 22e of the lower portion 22b slips out of the bolt 47 and the bracket 46
When the brake booster 11 is disengaged from the support plate 22, the mounting bolts 13 on the right side of the brake booster 11 are disengaged from the mounting grooves 22f, and the brake booster 11 is disconnected from the support plate 22. Further, the end portion 23b of the shaft 23 is disengaged from the shaft hole 22g of the support plate 22, and the brake pedal 24 is disengaged. In this way, when the brake pedal 24 is displaced when an impact is applied from the front of the vehicle, interference with the driver can be minimized.

In the above embodiment, the structure of the brake booster integrated brake pedal support in which the left and right support plates 21 and 22 are connected by the brake booster 11 has been described. It can also be applied to the structure of a clutch pedal support integrated with a clutch booster by connecting the support plates 21 and 22.

[0026]

According to the present invention, when a load is applied to the pedal support, the pedal is displaced in the direction away from the driver, so that the interference with the driver is greatly reduced and the driver's foot is protected. To be done. Further, by connecting the left and right pedal supports with the booster having a reinforcement function, the number of parts can be reduced, the mounting accuracy can be secured, the weight can be reduced, and the cost can be reduced.

In the second aspect, when the load on the pedal support is large, the booster and the shaft are disengaged from the support plate on one side and the pedal is displaced, so that the boost and the pedal are less likely to interfere with the driver. . In the third aspect, the pedal support is offset to one side of the steering column so that the pedal support does not face the driver and the pedal is arranged between the pedal support and the steering column. Interference with the driver is minimized when the pedal is released.

In the fourth aspect, the number of parts is reduced by connecting the left and right pedal plates with the brake booster.
The weight and cost can be reduced, and an inexpensive brake booster integrated brake pedal support can be configured.

[Brief description of drawings]

FIG. 1 is a front view of left and right support plates excluding boosters, showing an embodiment of a pedal support structure according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a support portion of the shaft of FIG.

FIG. 3 is a side view showing a state in which the left and right support plates in FIG. 1 are connected by a brake booster and attached to a vehicle body.

4 is a plan view without the brake booster of FIG. 3. FIG.

FIG. 5 is an explanatory view of a deformed state when the brake pedal support of FIG. 3 receives an impact from the front of the vehicle.

FIG. 6 is a side view of a conventional brake pedal support.

FIG. 7 is a front view of FIG.

[Explanation of symbols]

11 Brake booster 20 Brake pedal support 21,22 Support plate 21a, 22a, 21b, 22b Car body mounting part 21c, 22c Brake booster mounting part 23 Shaft 24 brake pedal 25 bracket

Front page continuation (72) Inventor Toshiyasu Shida, 4-21-1, Shimomaruko, Ota-ku, Tokyo Sanryo Engineering Co., Ltd. (72) Teruo Koyama 4--21-1, Shimomaruko, Ota-ku, Tokyo Sanryo Motor Co., Ltd. Engineering Co., Ltd. (56) Reference JP-A-9-123948 (JP, A) JP-A-58-447 (JP, A) JP-A-61-81851 (JP, A) JP-A-6-211115 (JP , A) JP-A-9-286256 (JP, A) Actually open 57-107664 (JP, U) Actually open 1-62163 (JP, U) Actually open 51-145132 (JP, U) Actually open 2-121468 (JP, U) Actually open 58-59622 (JP, U) Actually open 58-153151 (JP, U) Actually open 48-33018 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60T 7/06 B60T 7/04

Claims (4)

(57) [Claims] 1. A pair of left and right support plates supported by a vehicle body, a booster that connects the pair of support plates and is capable of releasing connection from at least one support plate, and both ends of the pair of support plates. A shaft that is pivotally supported on one side and one end of which is detachable from the one side support plate; A pair of support plates, wherein the pair of support plates are supported on the vehicle body with a support rigidity higher than that of the support plates on the other side of the pair of support plates. Construction. 2. The pedal support structure according to claim 1, wherein one side of the booster and one end of the shaft are disengaged from the one side support plate when a load is applied to the pedal support. 3. The pedal support is provided offset to one side with respect to a steering column, and the pedal is arranged between the pedal support and the steering column. 1 or 2
Pedal support structure described in paragraph. 4. The pedal support structure according to claim 1, wherein the booster is a brake booster.