JP2018139019A - Operation pedal support structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To materialize reduction in the number of components and vehicle weight and simplification of assembly, and furthermore to surely suppress backward movement of a depression part of a brake pedal upon frontal collision.SOLUTION: A support shaft 20 of a brake pedal 10 is supported by a groove 1408 for supporting the support shaft and a lower edge 2804 of a groove 28 for support shaft falling-off of an arm 26. When a vehicle undergoes frontal collision, a projection 32 of the arm 26 abuts on a deck cross member 16 and the force acting on a connection piece 1410 becomes a prescribed value or above. The projection 32 swings to a front side of the vehicle with a deformation-inducing part 1410A as a fulcrum. The support shaft 20 is pressed downward by an upper edge 2802 of the groove 28 for support shaft falling-off due to displacement of the groove 28 for support shaft falling-off, and the support shaft 20 falls off downward from a narrow width groove part 1409. An arm part 22 swings with the connection part between a push rod 2402 and the arm part as a fulcrum, and a depression part 18 is displaced to the front side of the vehicle.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an operation pedal support structure for a vehicle.

Conventionally, various operation pedal support structures for vehicles have been proposed.
In Patent Document 1, an operation pedal support shaft of an operation pedal is supported so as to be swingable by a support shaft pull-out hole of a pedal bracket attached to a dash panel, and also swingable to the pedal bracket. A lever is provided.
Then, at the time of a frontal collision, the rotating lever is brought into contact with the vehicle body member to rotate, and the operation pedal support shaft is removed from the support shaft dropping hole by the rotating lever.
However, in such Patent Document 1, the support shaft dropping hole is formed in an open shape obliquely forward of the vehicle, and therefore, the operation pedal support shaft is removed obliquely forward of the vehicle. There arises a problem that the stepped portion of the pedal is displaced rearward of the vehicle.

Further, in Patent Document 2, an operation pedal support shaft of an operation pedal is supported so as to be swingable by a support shaft dropping hole of a pedal bracket attached to a dash panel, and can be swung to a pedal bracket. A pivot lever for pivot removal is provided, and a pivot removal hole is formed open downward. Since the support shaft dropping hole is formed in an open shape downward, a drop-out restricting member that supports the operation pedal support shaft from below is provided.
According to Patent Document 2 described above, at the time of a frontal collision, the drop-off regulating member is swung in a direction away from the operation pedal support shaft by the turning lever, and the operation pedal support shaft is used to drop the support shaft by the turning lever. In order to drop downward from the hole, the stepped portion of the operation pedal can be displaced forward of the vehicle.

Japanese Patent No. 4664806 Japanese Patent No. 4814036

However, in Patent Document 2, a drop-off restricting member is required in addition to the rotating lever, and the number of parts increases, the weight of the vehicle increases, and there is a problem that the assembly cannot be easily performed.
The present invention has been made in view of such circumstances, and its purpose is to reduce the number of parts, reduce the weight of the vehicle, and simplify the assembly, while at the rear of the brake pedal stepping portion at the time of a frontal collision. An object of the present invention is to provide an operation pedal support structure for a vehicle that can surely suppress movement to the vehicle.

In order to achieve the above object, an invention according to claim 1 includes an operation pedal having a support shaft at an upper portion thereof, and a pedal that protrudes rearward from the dash panel and supports the support shaft so that the support shaft can swing and can be removed. A pedal support structure for a vehicle comprising a bracket and a vehicle body member disposed above the support shaft and at the rear of the vehicle, wherein an arm assembled to the pedal bracket is provided, and between the pedal bracket and the arm A deformation inducing portion that is deformed when a force of a predetermined value or more is applied, a base portion that extends from the inserted portion and that has an open support shaft dropping groove, and the pedal from the base portion A protrusion protruding above the bracket, the protrusion being formed at a position where it contacts the vehicle body member by being displaced rearward of the vehicle, and the deformation inducing portion is positioned below the protrusion. And said that you are.
According to a second aspect of the present invention, the supporting shaft dropping groove includes an upper edge positioned above the supporting shaft dropping groove and a lower edge positioned below the supporting shaft dropping groove. It is comprised and the guide which inclines below as the vehicle front part is formed in the edge part of the said upper edge is characterized by the above-mentioned.
The invention according to claim 3 is characterized in that the upper edge is formed longer than the lower edge.
According to a fourth aspect of the present invention, the pedal bracket is provided with a support shaft support groove having an opening opened downward, and the support shaft is formed of the support shaft support groove and the support shaft dropping groove. It is supported by the lower edge.

According to the first aspect of the present invention, the support shaft of the brake pedal is supported in a stable state by a simple configuration in which a deformation inducing portion is provided between the pedal bracket and the arm having the support shaft dropping groove. Thus, it is possible to support the support shaft of the brake pedal in a stable state while reducing the number of parts, reducing the weight of the vehicle, and simplifying the assembly.
According to the second and third aspects of the invention, it is even more advantageous in reliably suppressing the rearward movement of the stepping portion of the brake pedal at the time of a vehicle front collision.
According to the fourth aspect of the present invention, the support shaft is supported by the support shaft support groove and supported by the lower edge of the support shaft dropout groove, so that the support shaft is supported in a stable state. It will be advantageous.

It is a side view of the operation pedal support structure of the vehicle which concerns on embodiment, (A) shows the initial position of an operation pedal, (B) shows the state immediately after front collision of a vehicle. It is a side view of the operation pedal support structure of the vehicle which concerns on embodiment, (C) shows the state by which the support shaft was displaced below by the arm after the front collision of a vehicle, (D) is a support shaft from a pedal bracket. Indicates the state of being dropped out. It is a perspective view of a brake pedal. It is a perspective view of an arm. It is a side view of a pedal bracket. It is a top view which shows the state by which the arm was provided in the pedal bracket. FIG. 5 is a cross-sectional view showing a state in which a brake pedal is incorporated in the pedal bracket, with the pedal bracket and the arm broken.

Next, embodiments of the present invention will be described with reference to the drawings.
In the following drawings, the symbol FR indicates the front of the vehicle, the symbol UP indicates the vehicle upper side, and the symbol LH indicates the vehicle width direction.
1st Embodiment demonstrates the case where an operation pedal is applied to the brake pedal 10 used during a driving | running | working of a motor vehicle.
As shown in FIG. 1 (A), the brake pedal 10 is supported by a pedal bracket 14 that protrudes rearward from the dash panel 12 below the instrument panel.
Further, below the instrument panel, a deck cross member 16 that extends in the vehicle width direction and connects the front pillars on both sides in the vehicle width direction is positioned above the brake pedal 10 and behind the vehicle.
The brake pedal 10, the pedal bracket 14, and the deck cross member 16 are made of metal.

The brake pedal 10 includes a stepping portion 18 that is depressed by a driver, a support shaft 20 that serves as a rocking fulcrum, and an arm portion 22 that connects the stepping portion 18 and the support shaft 20.
A push rod 2402 of the brake booster 24 is connected to an intermediate portion in the longitudinal direction of the arm portion 22. In the present embodiment, the brake booster 24 determines the initial position of the brake pedal 10, and the brake booster 24 is provided with a return spring that returns the brake pedal 10 to the initial position.
As shown in FIG. 3, a boss portion 2204 in which a bolt insertion hole (support shaft insertion hole) 2202 is formed is provided at the upper end of the arm portion 22.
In the present embodiment, as shown in FIG. 7, the support shaft 20 is formed by a bolt insertion hole 2202 (FIG. 3) and a bolt 2002 inserted through the pedal bracket 14, and a nut 2004 is fastened to the bolt 2002. Yes.

As shown in FIGS. 1A, 5, 6, and 7, the pedal bracket 14 includes a pair of main body plate portions 1402 that extend in the front-rear direction of the vehicle while facing the vehicle width direction, and the rear side of the vehicle. A connecting plate portion 1404 for connecting the end portions of the main body plate portion 1402 positioned, and a mounting plate portion 1406 provided at the end portion of the main body plate portion 1402 positioned in front of the vehicle and attached to the dash panel 12. .
A pair of main body plate portions 1402 is provided with a support shaft supporting groove 1408 having an opening 1408A opened downward.
The portion excluding the lower end of the support shaft supporting groove 1408 is formed with an inner diameter that supports the support shaft 20 so that the support shaft 20 can swing, and the lower end of the support shaft supporting groove 1408 is formed with a width smaller than the diameter of the support shaft 20. When a downward force of a predetermined value or more is applied to the support shaft 20, the edges of the support shaft supporting grooves 1408 facing each other are deformed so as to open to each other, and the support groove 20 can be pulled out downward. 1409 is formed.
A connecting piece 1410 is provided integrally with the connecting plate portion 1404 at the upper edge of the connecting plate portion 1404 at the center in the longitudinal direction of the connecting plate portion 1404.
Near the connecting plate portion 1404 of the connecting piece 1410, a deformation inducing portion 1410A that is deformed (bent or stretched) as a fulcrum when a force of a predetermined value or more is applied to the connecting piece 1410 is provided. Even if a force less than the value is applied, the deformation inducing portion 1410A is not deformed.
In addition, you may provide the deformation | transformation induction | guidance | derivation part 1410A in the attachment point with the connection board part 1404 of the connection piece 1410. FIG.
As shown in FIG. 5, the deformation inducing portion 1410 </ b> A is configured, for example, by forming a thin portion by thinning a portion of the connecting piece 1410 protruding from the connecting plate portion 1404.
The deformation inducing portion 1410A is located above the support shaft 20 and behind the vehicle.

A metal arm 26 is provided on the pedal bracket 14.
As shown in FIG. 1A, the arm 26 is connected to the opposite side of the pedal bracket 14 with the deformation inducing portion 1410A interposed therebetween, that is, to a portion extending from the deformation inducing portion 1410 to the end of the connecting piece 1410 by welding, for example. It is supported.
That is, the deformation inducing portion 1410 is provided between the pedal bracket 14 and the arm 26 assembled to the pedal bracket 14.
The arm 26 has a base 30 and a protrusion 32 that protrudes from the base 30.
The protruding portion 32 protrudes above the pedal bracket 14 from the base 30 and is formed above the deformation inducing portion 1410. In other words, the deformation inducing portion 1410 is located below the protruding portion 32.
As shown in FIG. 1B, the protruding portion 32 is formed at a position where it abuts against the deck cross member 16 by being displaced rearward of the vehicle. In the present embodiment, the deck cross member 16 corresponds to a vehicle body member, but the vehicle body member is not limited to the deck cross member 16 and may be other members or parts supported on the vehicle body side. Moreover, although the pedal bracket 14 and the deck cloth 16 (vehicle body members) are separated from each other, a structure in which they are detachably connected in a normal state may be employed.
As shown in FIG. 4, in the present embodiment, the arm 26 includes a pair of plate portions 2602 that face each other in the vehicle width direction and a connecting plate portion 2604 that connects these plate portions 2602. Therefore, the base portion 30 and the protruding portion 32 are constituted by a pair of plate portions 2602 and a connecting plate portion 2604. As shown in FIG. 1A, both ends of the connecting piece 1410 in the vehicle width direction are welded to the inner surfaces of the pair of plate portions 2602 so that the arm 26 and the connecting piece 1410 are connected.
Further, the end portion 2610 located on the opposite side of the connecting plate portion 2604 of the pair of plate portions 2602 has a shape that is inclined so as to approach the connecting plate portion 2604 as it goes upward.

The base 30 is inserted through the support shaft 20 at the initial position (normal state) of the brake pedal 10, and extends from the position where the support shaft 20 is inserted to the front of the vehicle and is used to drop the support shaft in an open state in front of the vehicle. A groove 28 is formed.
The support shaft dropping groove 28 is provided in each of the pair of plate portions 2602.
The support shaft dropout groove 28 includes an upper edge 2802 located above the support shaft dropout groove 28 and a lower edge 2804 located below the support shaft dropout groove 28. .
At the initial position of the brake pedal 10, at least the lower edge 2804 of the support shaft dropping groove 28 is in contact with the support shaft 20. That is, when a downward force is applied to the brake pedal 10, the narrow shaft groove 1409 of the support shaft support groove 1408 and the support shaft support groove 1408 are not facing the same direction but facing forward in different directions. The arranged lower edge 2804 hits the support shaft 20 so as to support the support shaft 20 in a stable state.
That is, the support shaft 20 is supported by the narrow groove portion 1409 of the support shaft supporting groove 1408 and supported by the lower edge 2804 of the support shaft dropping groove 28, so that the support shaft 20 is supported in a stable state. It is designed as follows.
The upper edge 2802 is formed longer than the lower edge 2804, and the lower edge 2804 extends to a position located in front of the vehicle with respect to the support shaft dropping groove 28 as shown in FIG.
Further, a guide 2802A that is inclined downward toward the front of the vehicle is formed at the end of the upper edge 2802 that protrudes further forward of the vehicle than the lower edge 2804. The guide 2802A forcibly displaces the support shaft 20 toward the rear of the vehicle and the stepping portion 18 toward the front of the vehicle at the time of a frontal collision, as will be described later.

The brake pedal 10 and the arm 26 are assembled to the pedal bracket 14 as follows.
As shown in FIG. 7, the pair of plate portions 2602 of the arm 26 has bolts 2002 inserted into the support shaft dropout grooves 28 of the pair of plate portions 2602 and the support shaft support grooves 1408 of the pair of main body plate portions 1402. In this state, the pedal bracket 14 is disposed outside the pair of main body plate portions 1402.
A pipe 25 is mounted on the support shaft 20 positioned between the pair of main body plate portions 1402, and slide bearings 23 having an L-shaped cross section are disposed on both sides of the outer peripheral portion of the pipe 25.
The boss portion 2204 of the brake pedal 10 is supported so as to be swingable between the pair of main body plate portions 1402 via the support shaft 20, the pipe 25, and the slide bearing 23.
A nut 2004 is fastened to the support shaft 20 (bolt 2002), and the pair of main body plate portions 1402 are sandwiched between the boss portion 2204 and the pair of plate portions 2602 of the arm 26 via the slide bearings 23, respectively.

Next, the effect of this Embodiment is demonstrated.
Although the downward force component acts on the brake pedal 10 when the brake pedal 10 is depressed, the support shaft 20 of the brake pedal 10 is supported by the support shaft support groove 1408 and the support shaft is dropped off from the arm 26. The lower edge 2804 of the groove 28 is supported.
When the brake pedal 10 is depressed or when the depression 18 of the brake pedal 10 is accidentally depressed downward, the force acting on the connecting piece 1410 is less than a predetermined value, and the deformation inducing portion 1410A is not deformed. The arm 26 does not swing.
Therefore, the support shaft 20 of the brake pedal 10 can be supported in a stable state.

Next, the function and effect of the present embodiment when the vehicle collides front will be described.
In FIG. 1B to FIG. 2D, the broken line indicates the initial position of the brake pedal 10.
FIG. 1A shows an initial position of the brake pedal 10 and shows a normal state before the vehicle collides with the front. When the vehicle collides with the front, as shown in FIG. 14 is displaced rearward of the vehicle, and the projecting portion 32 of the arm 26 contacts the deck cross member 16.

As shown in FIG. 2 (C), when the pedal bracket 14 is further displaced toward the rear of the vehicle, the position in the vehicle front-rear direction where the protrusion 32 abuts the deck cross member 16 does not change, and the protrusion 32 moves toward the rear of the vehicle. Since it moves, the force which acts on the connection piece 1410 becomes more than predetermined value.
As a result, the protrusion 32 deforms forward of the vehicle with the deformation inducing portion 1410A as a fulcrum, and the protrusion 32 swings forward of the vehicle with the deformation inducing portion 1410A as a fulcrum.
Due to the swinging of the protruding portion 32, the support shaft dropping groove 28 located below the deformation inducing portion 1410A is displaced downward and toward the rear of the vehicle.
Due to the displacement of the support shaft dropping groove 28, the support shaft 20 is pressed downward by the upper edge 2802 of the support shaft dropping groove 28, and the support shaft 20 is a narrow groove portion 1409 of the support shaft supporting groove 1408. The support shaft 20 is dropped downward from the narrow groove portion 1409.

As shown in FIG. 2D, when the pedal bracket 14 is further displaced toward the rear of the vehicle, the projecting portion 32 further swings forward with the deformation inducing portion 1410A as a fulcrum, and the dropped support shaft 20 is removed from the support shaft. Pressed by the upper edge 2802 of the drop groove 28, the support shaft 20 is displaced downward and toward the rear of the vehicle.
At this time, since the intermediate part of the arm part 22 of the brake pedal 10 is connected to the push rod 2402 of the brake booster 24, the arm part 22 swings around the connection point between the push rod 2402 and the arm part. The support shaft 20 is displaced toward the rear of the vehicle, and the stepping portion 18 is displaced toward the front of the vehicle.
As a result, at the time of a frontal collision of the vehicle, the stepping portion 18 of the brake pedal 10 is suppressed from moving backward.
At this time, since the upper edge 2802 is formed longer than the lower edge 2804, it is even more advantageous in reliably suppressing the backward movement of the stepping portion 18.

According to the present embodiment, since the support shaft support groove 1408 is formed so as to support the support shaft 20 so that it can be pulled out downward, the support shaft support groove 1408 is located behind the stepping portion 18 of the brake pedal 10 at the time of a vehicle front collision. This is advantageous for reliably suppressing the movement of the.
In addition, when the brake pedal 10 is depressed, or when the depression 18 of the brake pedal 10 is accidentally depressed downward, the force acting on the connecting piece 1410 is less than a predetermined value, and the deformation inducing portion 1410A is deformed. The arm 26 does not swing.
Therefore, the drop-off restricting member which has been necessary in the past can be omitted, and the support shaft 20 of the brake pedal 10 is supported in a stable state by a simple configuration in which the arm 26 having the support shaft dropping groove 28 and the connecting piece 1410 are provided. It becomes possible to do. That is, it is possible to support the support shaft 20 of the brake pedal 10 in a stable state while reducing the number of parts, reducing the weight of the vehicle, and simplifying the assembly.
Further, since the connecting piece 1410 having the deformation inducing portion 1410A can be provided integrally with the pedal bracket 14, it is more advantageous in reducing the number of parts, reducing the weight of the vehicle, and simplifying the assembly.
In the present embodiment, a guide 2802A that is displaced downward toward the front of the vehicle is formed at the end of the upper edge 2802 that protrudes forward of the vehicle relative to the lower edge 2804. Therefore, the support shaft 20 is supported by the guide 2802A. Is greatly displaced toward the rear of the vehicle, and the stepping portion 18 is largely displaced toward the front of the vehicle.
Accordingly, it is even more advantageous in reliably suppressing the rearward movement of the stepping portion 18 of the brake pedal 10 at the time of a vehicle front collision.

In this embodiment, the case where the connecting piece 1410 having the connecting piece deformation inducing portion 1410A is provided integrally with the pedal bracket 14 has been described. However, the connecting piece 1410 having the connecting piece deformation inducing portion 1410A is provided on the arm 26. You may provide in one. In this case, what is necessary is just to connect the location of the connection piece 1410 on the opposite side to the arm 26 across the connecting piece deformation inducing portion 1410A to the pedal bracket 14.
Further, a connecting piece 1410 having a connecting piece deformation inducing portion 1410A may be provided as a separate member, and the arm 26 may be attached to the pedal bracket 14 via the connecting piece 1410.
Moreover, although the case where the operation pedal is the brake pedal 10 has been described in the embodiment, the present invention can be applied to various conventionally known operation pedals such as an accelerator pedal and a clutch pedal.

DESCRIPTION OF SYMBOLS 10 Brake pedal 14 Pedal bracket 1410 Connection piece 1410A Connection piece deformation induction part (deformation induction part)
16 Deck cross member (body member)
20 Support shaft 24 Brake booster 26 Arm 28 Support shaft dropout groove 2802 Upper edge 2802A Guide 2804 Lower edge 32 Projection

Claims (4)

An operation pedal with a support shaft at the top;
A pedal bracket that protrudes rearward from the dash panel and supports the support shaft in a swingable and removable manner;
A vehicle body member disposed above the support shaft and behind the vehicle;
A pedal support structure for a vehicle comprising:
An arm assembled to the pedal bracket is provided, and a deformation inducing portion is provided between the pedal bracket and the arm that is deformed when a force greater than a predetermined value is applied,
The arm extends from the portion through which the support shaft is inserted and has an open support shaft drop-out groove, and protrudes upward from the base portion to the pedal bracket. And a protruding portion that
The projecting portion is formed at a position that contacts the vehicle body member by being displaced rearward of the vehicle,
The deformation inducing portion is located below the protruding portion;
A pedal support structure for a vehicle. The support shaft dropping groove is composed of an upper edge located on the upper side of the support shaft dropping groove and a lower edge located on the lower side of the support shaft dropping groove,
At the end of the upper edge, a guide that is inclined downward as it reaches the front of the vehicle is formed.
The operation pedal support structure for a vehicle according to claim 1. The upper edge is formed longer than the lower edge,
The operation pedal support structure for a vehicle according to claim 2. The pedal bracket is provided with a support shaft supporting groove having an opening opened downward,
4. The vehicle operation pedal according to claim 1, wherein the support shaft is supported by the lower edge of the support shaft supporting groove and the support shaft dropping groove. 5. Support structure.

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