JP2010143329A - Brake pedal displacement control structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brake pedal displacement control structure in which a connected state between a pedal bracket and a second vehicle body constituting member is positively released when an external force more than a predetermined value acts against a front part of the vehicle body. <P>SOLUTION: In a brake pedal displacement structure, a part at the front side of a vehicle from a connected part 12 with a connecting member 9 in a pedal bracket 2 is formed with a bottom surface 13a and a cavity part 13 by side walls 13b extending from right and left ends of the bottom surface 13a. The bottom surface 13a is inclined approaching toward an outer surface 2a of the pedal bracket as it is placed at the front side of a vehicle and connected to the outer surface 2a of the pedal bracket. When an external force acts against it, the connecting member 9 is released from the connected part 12 and comes out from the cavity part 13 while being slidably contacted with it, thereby a connected state between a rear end of the pedal bracket 2 and the connecting member 9 is released and the pedal bracket 2 is guided to a guiding means 4a of a second vehicle body constituting member 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention provides a first vehicle body-side component fixed to a vehicle body, and a vehicle rear side that is fixed to the vehicle rear side relative to the first vehicle body-side component member, even if an external force greater than a predetermined value acts on the vehicle front portion. A second vehicle body side structural member that hardly displaces, and a pedal bracket that supports the brake pedal,
A front end side of the pedal bracket is coupled to the first vehicle body side component member, and a rear end side of the pedal bracket is coupled to a front end side of the second vehicle body side component member via a coupling member;
When the external force acts on the front portion of the vehicle and the first vehicle body side component member and the pedal bracket are displaced to the vehicle rear side, the connection between the rear end side of the pedal bracket and the coupling member is released, and the pedal The present invention relates to a brake pedal displacement control structure in which a rear end side of a bracket is configured to be displaced to the vehicle lower side by guide means provided in the second vehicle body side component member.

  As a conventional brake pedal displacement control structure, for example, as shown in FIGS. 1, 2 and 3 of Patent Document 1, a dash panel 16 (first vehicle body side component) fixed to the vehicle body, A slide plate that is fixed to the vehicle rear side of the panel 16 and is hardly displaced to the vehicle rear side even when an external force of a predetermined value or more acts on the vehicle front portion and is arranged in a state of protruding from the instrument panel reinforcement 48 to the vehicle front side. 50 (second vehicle body side component) and a pedal bracket 26 that supports the brake pedal 10 so as to be swingable. A front end side of the pedal bracket 26 is connected to the dash panel 16, and a rear end side of the pedal bracket 26 is The slide plate 50 is connected to the front end side of the slide plate 50 via a fixing bolt 52 (a coupling member).

When the external force acts on the front portion of the vehicle and the dash panel 16 and the pedal bracket 26 are displaced to the vehicle rear side, the narrow width portion 46A of the slit 46 provided on the rear end side of the pedal bracket 26 is removed from the fixing bolt 52. It is known that the rear end side of the pedal bracket 26 is configured to be displaced to the vehicle lower side by an inclined surface 50 </ b> A (guide means) provided on the slide plate 50.
With the above configuration, when an external force of a predetermined value or more is applied from the front of the vehicle, the pedal pad 58 of the brake pedal 10 is controlled to be displaced substantially toward the front of the vehicle.
JP-A-10-175492

As shown in FIG. 2 of Patent Document 1, in the above-described brake pedal displacement control structure, when an external force of a predetermined value or more acts from the front of the vehicle, the pedal bracket 26 is rearward of the vehicle with respect to the slide plate 50 Slide to the side.
The pedal bracket 26 is disengaged from the fixing bolt 52 by the relative movement of the head of the fixing bolt 52 from the narrow portion 46A to the wide portion 46B of the slit 46 and coming out of the slit 46. When the bolt 52 is pulled out from the wide portion 46B of the slit 46, the head of the fixing bolt 52 is caught on the front end portion of the wide portion 46B, so that a situation where the pedal bracket 26 is difficult to come off from the fixing bolt 52 may occur.
In order to prevent the fixing bolt 52 from being caught, it is not preferable to set the length of the slit 46 in the front-rear direction longer because the strength of the pedal bracket 26 is reduced.

  The present invention has been made in view of the above circumstances, and its purpose is to ensure the connection between the pedal bracket and the second vehicle body side component when an external force of a predetermined value or more acts on the front of the vehicle. An object of the present invention is to provide a displacement control structure for a brake pedal to be released.

In order to achieve the above object, in the present invention,
A first vehicle body side component member fixed to the vehicle body, and fixed to the vehicle rear side with respect to the first vehicle body side component member, and hardly displaced to the vehicle rear side even when an external force of a predetermined value or more acts on the vehicle front portion. A second vehicle body side component and a pedal bracket that supports the brake pedal;
A front end side of the pedal bracket is coupled to the first vehicle body side component member, and a rear end side of the pedal bracket is coupled to a front end side of the second vehicle body side component member via a coupling member;
When the external force acts on the front portion of the vehicle and the first vehicle body side component member and the pedal bracket are displaced to the vehicle rear side, the connection between the rear end side of the pedal bracket and the coupling member is released, and the pedal In the brake pedal displacement control structure configured such that the rear end side of the bracket is displaced to the vehicle lower side by the guide means provided in the second vehicle body side component member,
A concave portion is formed in a portion of the pedal bracket from the connecting portion to the front side of the vehicle by a bottom surface and side walls extending from right and left end portions of the bottom surface, and the bottom surface is the front side of the vehicle. It is constructed so as to be inclined to be close to the outer surface of the pedal bracket and connected to the outer surface of the pedal bracket. When the external force is applied, the coupling member is detached from the connecting portion and comes out while sliding in the recess. Thus, the connection between the rear end side of the pedal bracket and the coupling member is released, and the pedal bracket is configured to be guided to the guide means of the second vehicle body side component member.

[Action and effect]
In the present invention, for example, as shown in FIG. 4, from the connecting portion 12 of the pedal bracket 2 to the coupling member 9 to the front side of the vehicle, the bottom surface 13a and the right and left end portions of the bottom surface 13a A concave portion 13 is formed by the extended side walls 13b, 13b, and the bottom surface 13a is inclined so as to be closer to the outer surface 2a of the pedal bracket 2 toward the front side of the vehicle, and connected to the outer surface 2a of the pedal bracket 2. ing.
When an external force of a predetermined value or more is applied to the front portion of the vehicle, the coupling member 9 is detached from the coupling portion 12 and comes out while sliding in the recess 13, so that the rear end side of the pedal bracket 2 and the coupling member 9 are separated. The connection is released (the rear end side of the pedal bracket 2 is disengaged from the coupling member 9), and the pedal bracket 2 is guided to the guide means 4a of the second vehicle body side component member 4.

  That is, according to the present invention, for example, as shown in FIGS. 2 and 3, the bottom surface 13a of the recess is inclined closer to the outer surface 2a of the pedal bracket toward the front side of the vehicle so as to be connected to the outer surface 2a of the pedal bracket. Therefore, when an external force of a predetermined value or more is applied to the front portion of the vehicle, the coupling member 9 can be smoothly pulled out from the recess 13 without being caught. And the second vehicle body side component 4 are more reliably released.

In addition, in the present invention, since the recess 13 is formed in the pedal bracket 2 instead of the conventional slit, the strength of the pedal bracket 2 is maintained by the presence of the bottom surface 13 a and the side wall 13 b of the recess 13.
In addition, in the conventional brake pedal displacement control structure, the length of the slit in the front-rear direction may be set longer in order to prevent the fixing bolt (coupling member) from being caught when it comes out of the slit. Since the bottom surface 13a of the recess 13 in the invention is connected to the outer surface 2a of the pedal bracket, the recess 13 does not have a portion that becomes a catch when the coupling member 9 comes out. Therefore, it is not necessary to set the length of the recess 13 in the front-rear direction unnecessarily large, and the pedal bracket 2 can be reduced in size.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment
The displacement control structure of the brake pedal 1 according to the present invention will be described with reference to FIGS. The arrows FR, UP, and W shown in the drawings indicate the front direction (traveling direction), the upward direction, and the vehicle width direction (lateral direction) of the vehicle, respectively. Each of the front end side and the rear end side of the vehicle coincides with the front direction and the rear direction of the vehicle.

FIG. 1 schematically shows an assembled state of a peripheral structure of a suspension type brake pedal 1 according to the brake pedal displacement control structure of the present invention.
FIGS. 2 and 3 show the behavior of the pedal bracket 2 and the brake pedal 1 when an external force of a predetermined value or more is applied from the front of the vehicle, and changes in the order of FIGS. 2 and 3.
FIG. 4 schematically shows an exploded perspective view of the pedal bracket 2 and the slide plate 4 according to the displacement control structure of the brake pedal of the present invention.

  As shown in FIG. 1, the displacement control structure for a brake pedal according to the present invention includes a dash panel 3 as a first vehicle body side component fixed to the vehicle body, a vehicle rear side of the dash panel 3, and a predetermined structure. A slide plate 4 as a second vehicle body side component that hardly displaces to the vehicle rear side even when an external force greater than the value acts on the front part of the vehicle, and a pedal bracket 2 that supports the brake pedal 1 so as to be swingable. It is configured.

  The dash panel 3 is disposed substantially vertically at a position that partitions the engine room E and the vehicle interior space R. The upper end portion of the dash panel 3 is fixed by spot welding or the like to a front surface of a cowl inner panel (not shown) that is arranged with the vehicle width direction as a longitudinal direction and forms a part of the cowl. The part is fixed to a floor panel (not shown) by spot welding or the like.

  On the front side of the dash panel 3, a brake booster 5 that functions as a stepping force increasing means for increasing the stepping force of the occupant applied to the brake pedal 1, and the pressure increased by the brake booster 5 is converted into hydraulic pressure. A master cylinder 6 for hydraulic pressure conversion for this purpose and a reservoir tank (not shown) for storing and replenishing brake fluid following the volume change of the hydraulic system are integrally provided.

Similarly, the slide plate 4 is fixed in a state of protruding substantially from the PP member 7 as the second vehicle body side component member toward the vehicle front side, and the front end portion of the slide plate 4 is directly above the rear end side of the pedal bracket 2. Has been placed.
The lower end surface 4a of the slide plate 4 is inclined at a predetermined angle substantially toward the vehicle lower side. When an external force of a predetermined value or more acts on the front of the vehicle and the dash panel 3 and the pedal bracket 2 are displaced toward the vehicle rear side, The top plate portion 2a (outer surface) on the rear end side of the pedal bracket 2 slides and functions as a guide means for guiding the pedal bracket 2 so as to be displaced downward in the vehicle.

  The PP member 7 is a high-strength member arranged with the vehicle width direction as a longitudinal direction, and the slide plate 4 is also set to a predetermined high strength.

  The pedal bracket 2 includes a base plate portion 2b constituting a mounting seat surface for the dash panel 3, a pair of side plate portions 2c and 2c extending in parallel to the vehicle rear side from the base plate portion 2b, and sides facing each other. The top plate part 2a which connects the upper edge side of the plate part 2c is comprised. Therefore, the pedal bracket 2 as a whole is formed in a U-shaped cross-section that is long in the vehicle front-rear direction and the bottom surface is opened.

  The base plate portion 2b on the front end side of the pedal bracket 2 is connected to the dash panel 3 at the upper portion and the lower portion by bolts 8.

  On the other hand, the rear end side of the pedal bracket 2 is connected to the front end side of the slide plate 4 via a fixing bolt 9 as a coupling member. Specifically, as shown in FIG. 4, the fixing bolt 9 is attached to the back side of the top plate portion 2a in the opening portion 12 as a connecting portion provided in the top plate portion 2a (outer surface) on the rear end side of the pedal bracket 2. The rear end side of the pedal bracket 2 is connected to the front end side of the slide plate 4 by being inserted through the washer 11 and screwed into the weld nut 10 welded to the front end portion of the slide plate 4.

  As shown in FIGS. 1 and 4, the pedal bracket 2 includes a bottom surface 13a and side walls 13b extending from the right and left ends of the bottom surface 13a on the front side of the vehicle from the opening 12. A recess 13 is formed by 13b, and the bottom surface 13a is inclined so as to be closer to the top plate portion 2a (outer surface) of the pedal bracket 2 toward the vehicle front side and connected to the top plate portion 2a.

  As shown in FIG. 4, the opening 12 has an isosceles triangle shape that becomes wider toward the front side, and a portion corresponding to the bottom side communicates with the recess 13. The width dimension X1 of the bottom portion of the opening 12 is larger than the head diameter of the fixing bolt 9 and the diameter of the washer 11b, and the width dimension X2 of the recess 13 (the side wall 13b extending from the right and left ends, 13b).

  Therefore, when the fixing bolt 9 is located near the apex portion of the opening 12 which is the assembly position, the rear end side of the pedal bracket 2 and the slide plate 4 are connected, and the pedal bracket 2 is substantially on the vehicle rear side. When the fixing bolt 9 is relatively positioned in the recess 13 by being displaced toward the rear, the rear end side of the pedal bracket 2 is detached from the slide plate 4.

  A suspended brake pedal 1 is supported between the pair of side plate portions 2c, 2c of the pedal bracket 2. The brake pedal 1 includes a pedal support portion 1a formed by appropriately bending a narrow plate material, and a pedal pad 1b that is provided at the lower end portion of the pedal support portion 1a and to which the occupant's pedaling force is applied. Yes. Note that a return spring (not shown) is locked to the pedal support portion 1a of the brake pedal 1, and the brake pedal 1 is always urged in a direction to return to the initial position by the return spring.

  A rotating shaft portion 1 c is provided at the upper end portion of the pedal support portion 1 a of the brake pedal 1, and the rotating shaft portion 1 c is pivotally supported by a pair of side plate portions 2 c and 2 c of the pedal bracket 2.

  A front end portion of a push rod 14 (operating rod) that protrudes from the brake booster 5 and penetrates the dash panel 3 is connected to an intermediate portion of the pedal support portion 1 a of the brake pedal 1. Specifically, a clevis 15 having a substantially U-shaped cross section is attached to the tip of the push rod 14. Inside the clevis 15, a pedal support portion 1a is arranged in an inserted state. A clevis pin 16 penetrates both sides of the clevis 15 and the pedal support portion 1a, and a retaining ring, a β pin, and the like are provided at the penetrating end portion. The push rod 14 and the pedal support portion 1a are connected so as to be relatively rotatable by being fitted and removed.

Next, operations and effects of the present embodiment will be described with reference to FIGS.
As shown in FIG. 1, when the brake is not operated, the brake pedal 1 is held at the initial position by a biasing force of a return spring (not shown). From this state, when the occupant applies a pedaling force to the pedal pad 1b of the brake pedal 1, the brake pedal 1 is swung to the vehicle front side around the rotating shaft 1c, and the push rod 14 is pressed to the vehicle front side. Is done. As a result, the pedaling force applied to the pedal pad 1 b is transmitted to the brake booster 5 via the push rod 14 to be enhanced, and then converted into hydraulic pressure by the master cylinder 6.

  On the other hand, when an external force of a predetermined value or more acts on the front side of the vehicle, the load at that time is input to the dash panel 3 via the master cylinder 6 and the brake booster 5, and the dash panel 3 and the pedal bracket 2 are moved substantially to the rear side of the vehicle. Displace.

  Next, as shown in FIGS. 2 and 3, the fixing bolt 9 located at the opening 12 of the pedal bracket 2 is detached from the opening 12 and displaced toward the front end side of the pedal bracket 2, and the pedal bracket 2. The rear end side of the pedal bracket 2 and the fixing bolt 9 are released (the rear side of the pedal bracket 2 is released). The end side is disengaged from the fixing bolt 9), and the pedal bracket 2 is guided to the lower end surface 4 a of the slide plate 4.

  That is, in the present embodiment, the bottom surface 13a of the recess 13 is inclined so as to be closer to the top plate portion 2a (outer surface) of the pedal bracket 2 toward the front side of the vehicle, and is connected to the top plate portion 2a. When an external force of a predetermined value or more is applied to the front of the vehicle, the fixing bolt 9 can be smoothly pulled out from the recess 13 without being caught. Therefore, the pedal bracket 2 and the slide plate 4 can The connection is more reliably released.

In addition, in the present invention, since the recess 13 is formed in the pedal bracket 2 instead of the conventional slit, the strength of the pedal bracket 2 is maintained by the presence of the bottom surface 13 a and the side wall 13 b of the recess 13.
In addition, in the conventional brake pedal displacement control structure, the length of the slit in the front-rear direction may be set longer in order to prevent the fixing bolt (coupling member) from being caught when it comes out of the slit. Since the bottom surface 13a of the recess 13 in the invention is connected to the top plate portion 2a of the pedal bracket, the recess 13 does not have a portion that becomes a catch when the fixing bolt 9 comes out. Therefore, it is not necessary to set the length of the recess 13 in the front-rear direction unnecessarily large, and the pedal bracket 2 can be reduced in size.

Then, as the top plate portion 2a (outer surface) on the rear end side of the pedal bracket 2 slides on the lower end surface 4a of the slide plate 4, the pedal bracket 2 is rotationally displaced downward as a whole as a whole. The pedal pad 1b of the brake pedal 1 is displaced substantially toward the vehicle front side.
As a result, the bending of the knee of the leg due to the inertial movement of the occupant when an external force of a predetermined value or more is applied to the front of the vehicle is suppressed, and the contact between the occupant's knee and the steering column can be avoided.

[Another embodiment]
[1] Instead of the fixing bolt 9 shown in the above-described embodiment, a clip member that can be locked to the opening 12 of the pedal bracket 2 may be used.
[2] In the above-described embodiment, by adjusting the inclination angle of the bottom surface 13a of the recess 13, when an external force of a predetermined value or more acts on the front of the vehicle, the top plate portion 2a on the rear end side of the pedal bracket 2 is It is also possible to adjust (tune) the movement of the pedal bracket 2 until it contacts the lower end surface 4a of the slide plate 4.

Schematic which shows the assembly | attachment state of the periphery structure of the suspension type brake pedal which concerns on the displacement control structure of the brake pedal of this invention The figure which shows the behavior (initial stage) of the pedal bracket and the brake pedal when the external force exceeding the predetermined value acts from the front of the vehicle The figure which shows the behavior (final stage) of the pedal bracket and the brake pedal when the external force more than the predetermined value acts from the front of the vehicle 1 is an exploded perspective view of a pedal bracket and a slide plate according to a displacement control structure of a brake pedal of the present invention.

Explanation of symbols

1 Brake Pedal 2 Pedal Bracket 3 Dash Panel (First Body Side Component)
4 Slide plate (2nd vehicle body side component)
4a Lower end surface (guide means)
9 Fixing bolt (coupling member)
12 Opening (connecting part)
13 Recess 13a Bottom 13b Side wall

Claims (1)

A first vehicle body side component member fixed to the vehicle body, and fixed to the vehicle rear side with respect to the first vehicle body side component member, and hardly displaced to the vehicle rear side even when an external force of a predetermined value or more acts on the vehicle front portion. A second vehicle body side component and a pedal bracket that supports the brake pedal;
A front end side of the pedal bracket is coupled to the first vehicle body side component member, and a rear end side of the pedal bracket is coupled to a front end side of the second vehicle body side component member via a coupling member;
When the external force acts on the front portion of the vehicle and the first vehicle body side component member and the pedal bracket are displaced to the vehicle rear side, the connection between the rear end side of the pedal bracket and the coupling member is released, and the pedal In the brake pedal displacement control structure configured such that the rear end side of the bracket is displaced to the vehicle lower side by the guide means provided in the second vehicle body side component member,
A concave portion is formed in a portion of the pedal bracket from the connecting portion to the front side of the vehicle by a bottom surface and side walls extending from right and left end portions of the bottom surface, and the bottom surface is the front side of the vehicle. It is constructed so as to be inclined to be close to the outer surface of the pedal bracket and connected to the outer surface of the pedal bracket. When the external force is applied, the coupling member is detached from the connecting portion and comes out while sliding in the recess. Thus, the brake pedal displacement control structure is configured such that the connection between the rear end side of the pedal bracket and the coupling member is released, and the pedal bracket is guided to the guide means of the second vehicle body side component member. .

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