JP3900235B2 - Vehicle pedal release structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle pedal release structure applied to a brake pedal or clutch pedal of an automobile.
[0002]
[Prior art]
A brake pedal or a clutch pedal (hereinafter simply referred to as a pedal) of an automobile is configured such that an upper end of a pedal arm having a tread plate at a lower end is pivotally attached to a member on a vehicle body side. It is supposed to fulfill the function of. A support structure for a brake pedal will be described with reference to FIG . In the figure, the interior of the vehicle is shown with a dash panel 1 as the center. The dash panel 1 partitions the engine room 2 and the cabin 3 together with the upper cowl 4 provided on the upper portion thereof.
[0003]
A master cylinder 5 is attached to the dash panel 1 on the engine room 2 side, and the tip of the push rod 6 protruding from the master cylinder 5 and penetrating the dash panel 1 is pivotally attached to the upper portion of the pedal arm 8 by the shaft 7. ing. A bracket 9 as an arm support member is disposed on the rear surface (cabin 3 side) of the dash panel 1 where the master cylinder 5 is attached, and is coupled to the dash panel 1 and the upper cowl 4. In addition, the line shown with the code | symbol 10 in a figure is the center of the volt | bolt (not shown) which connects the bracket 9 to the upper cowl 4. FIG. A tread plate 11 is provided at the lower end of the pedal arm 8, and the upper end is pivotally attached to the bracket 9 by a shaft 12.
[0004]
In this structure, when the driver steps on the tread plate 11, the pedal arm 8 rotates about the shaft 12 in the clockwise direction in the drawing and pushes the push rod 6 to the left. As a result, the master cylinder 5 is operated to apply pressure to the brake cylinder of the wheel by a hydraulic circuit (not shown) to brake the wheel.
[0005]
For some reason, a large force from the front is applied to the vehicle body, the engine dash panel 1 is pushed in the direction of the cabin 3 through the other, the dash panel 1 involves to deform, master attached to the dash panel 1 The cylinder 5 moves in the direction of the cabin 3. FIG. 6 shows the state at that time. When the posture of the master cylinder 5 is changed in this way, the pedal arm 8 is pushed rightward in the figure by the push rod 6, so that it rotates as indicated by the symbol A in the figure, and the tread plate 11 is unnecessarily operated. It protrudes to the side (not shown).
[0006]
Since such a state is not preferable, various inventions for preventing this situation have been made. Examples thereof include those disclosed in JP-A-9-286256, JP-A-9-290715, JP-A-10-310036, and the like. Those disclosed in these publications can be expected to have an effect that the pedal arm does not protrude toward the cabin when receiving a large external force from the front of the vehicle body. However, each of these achieves the purpose with a complicated structure, and there is a problem of improvement in that it takes man-hours and costs for manufacturing.
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of this point, and it is an object of the present invention to provide a vehicle pedal disengagement structure that can obtain substantially the same effects as the prior arts described above with a simpler structure. is there.
[0008]
[Means for Solving the Problems]
As a means for solving the above problems, the present invention provides a vehicle pedal detachment structure in which the upper end of a pedal arm is pivotally supported by two arm support members . One is a first bracket attached to the dash panel and extending rearward of the vehicle body , and the other arm support member is a member different from the dash panel and the first bracket. attached to a member located above a second bracket extending the bottom of the vehicle body, provided with a notch that opens to the vehicle body downward to the shaft insertion portion of the first bracket, the shaft insertion portion of the second bracket the-out opening ku notch provided on the vehicle body rearwardly, the first and second brackets is disposed so as to overlap a portion of each notch in a side view, each notch Together with the upper end of the pedal arm via a shaft which is inserted is pivotally supported by the portion overlapping, in the shaft, characterized in that it is interposed a spring for urging the shaft downwardly.
[0009]
Further, the invention according to claim 2, in which according to claim 1, wherein the spring is characterized by a return spring of the pedal arm.
[0010]
With this configuration, in the first aspect of the present invention, when a large force acts on the vehicle body from the front and the dash panel is pushed and deformed by the master cylinder, the shaft at the upper end of the pedal arm is moved to the second bracket. When the first bracket also moves rearward along the notch that opens to the rear of the vehicle body and the shaft at the upper end of the pedal arm is disengaged from the notch that opens to the rear of the vehicle body of the second bracket. At the same time, the shaft is released from the downward restraint. Then, the axis of the upper end of the pedal arm falls along a notch that opens downward in the vehicle body of the first bracket due to gravity, and is pushed down by the force of the spring to cause the pedal arm to move to the first and second brackets. Respectively leave. When the pedal arm is detached from the notch of the first bracket that opens downward from the vehicle body , the spring force acts , so that the pedal arm can be reliably detached from the first and second brackets.
In the invention of claim 2, in addition to the function of urging the pedal arm shaft downward, the spring has a function of urging the pedal arm in a normal state so as to return the pedal arm after operation.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
A vehicle pedal detaching structure according to an embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, two arm support members that pivotally support the upper end of the pedal arm 8 are constituted by a first bracket 13 and a second bracket 14. The first bracket 13 is attached to the dash panel 1 at the front end and extends rearward of the vehicle body, and the second bracket 14 is attached to the upper cowl 4 whose upper end is located above the first bracket 13. It extends below the vehicle body .
The first bracket 13 is provided with a U-shaped notch 13b that opens downward. On the other hand, the second bracket 14, U-shaped notch 14a that opens rearward is that provided.
[0012]
Then, the first bracket 13 and second bracket 14, and the notch 13b and provided on the first bracket 13 and the notch 14a provided on the second bracket 14 is crossed,-out the cut-out It arrange | positions so that a part of 13b, 14a may overlap in a side view. Both notches 13b, 14a are bottom pedal arm 8 upper shaft 12 is inserted through the overlapping, pivotally supporting the pedal arm 8.
[0013]
Further, as shown in FIGS. 3 and 4, the pivotally supported portion of the pedal arm 8, are interposed a spring 15 for urging the shaft 12 pivotally supporting the pedal arm 8 downward. The spring 15 is a coil spring wound around the outer periphery of the shaft 12 and also functions as a return spring for the pedal arm 8. One end of the spring 15 is pressed against the upper wall surface of the first bracket 13, and the other end is engaged with the side portion of the pedal arm 8. 16 is a bolt that supports the shaft 12, and 17 is a nut.
[0014]
When the driver in this structure depresses the footplate 11, in exactly the same manner as that shown in FIGS. 5 and 6, the pedal arm 8 is rotated in the clockwise direction in FIG. About the shaft 12, the push rod 6 Left It will be pushed toward. As a result, the master cylinder 5 is operated to apply pressure to the brake cylinder of the wheel by a hydraulic circuit (not shown) to brake the wheel.
[0015]
For some reason, a large force from the front is applied to the vehicle body, master cylinder 5 is pushed in the direction of the cabin 3 via the engine other, as to deform the dash panel 1 is also pushed backwards, the dash panel 1 The master cylinder 5 attached to the vehicle moves in the direction of the cabin 3. When the master cylinder 5 and the dash panel 1 is changed to the state shown in FIG. 2, the pedal arm 8 is pushed to the right in the drawing by the push rod 6, the body axis 12 of the upper end of the pedal arm 8 is in the second bracket 14 The first bracket 13 also moves rearward along the notch 14a that opens rearward, and the first bracket 13 also moves rearward so that the shaft 12 at the upper end of the pedal arm 8 is behind the vehicle body of the second bracket 14. At the same time that the shaft 12 is disengaged from the notch 14a that opens, the shaft 12 is released from the downward restraint. Then, the shaft 12 at the upper end of the pedal arm 8 falls due to gravity along the notch 13b that opens downward in the vehicle body of the first bracket 13 and is pushed down by the force of the spring 15 to lower the pedal arm 8 in the first position. Detach from the first and second brackets 13 and 14, respectively. As a result, the pedal arm 8 is released from the coupling with the first and second brackets 13 and 14, and the tread 11 of the pedal arm 8 can be reliably prevented from protruding into the cabin .
[0016]
In the present embodiment, as described above, the spring 15 is interposed on the shaft 12 that pivotally supports the pedal arm 8 on the first and second brackets 13 and 14, and the arrow B in FIG. Since a downward force as shown is obtained, the pedal arm 8 and the shaft 12 smoothly move along the notch 13b of the first bracket 13 at the moment when the shaft 12 is detached from the notch 14a of the second bracket 14. Will move downward (drop).
[0017]
【The invention's effect】
Since the present invention is a vehicle pedal detachment structure as described above, according to the first and second aspects of the present invention, the pedal arm is detached from the two arm support members against an external force from the front of the vehicle. Therefore, the pedal arm can be reliably prevented from projecting into the cabin, and the distance between the pedal arm and the driver can be sufficiently maintained .
[Brief description of the drawings]
1 is a side sectional view showing the outline of the embodiment of the present invention.
[2] that of FIG. 1 is a side sectional view showing a state when subjected to excessive external force from the front.
3 is a side view showing a spring definitive to the embodiment of the present invention.
4 is a rear view of an enlarged portion of FIG.
5 is a side sectional view illustrating the outline of a conventional pedal arm support structure.
[6] that of FIG. 5 is a side sectional view showing a state when subjected to excessive external force from the front.
[Explanation of symbols]
1 Dash panel 4 Upper cowl (member)
5 Master cylinder 6 Push rod 8 Pedal arm 12 Axis 13 First bracket (arm support member)
13b Notch 14 Second bracket (arm support member)
14a Notch 15 Spring

Claims (2)

In the vehicle pedal release structure in which the upper end of the pedal arm is pivotally supported by two arm support members,
One of the arm support members is a first bracket attached to the dash panel and extending rearward of the vehicle body ,
The other of the arm support members is a second bracket that is a member different from the dash panel and the first bracket, is attached to a member positioned above the first bracket, and extends below the vehicle body ,
Provided with a notch that opens to the vehicle body downward to the shaft insertion portion of the first bracket, a-out opening ku notches provided in the rear of the vehicle body to the shaft insertion portion of the second bracket,
The first and second brackets are arranged such that a portion of each notch overlaps when viewed from the side, and the upper end of the pedal arm is pivotally supported via a shaft inserted through the overlap of each notch. And a vehicle pedal release structure characterized in that a spring for biasing the shaft downward is interposed on the shaft . Withdrawal structure of a vehicle pedal according to claim 1, wherein the spring is characterized by a return spring of the pedal arm.

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