JP2013225171A - Pedal pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a stable pedal operation even when the right and left edge parts of a pedal pad are stepped on.SOLUTION: The pedal pad includes tread enlargement mechanisms 44 and 46 for, when the stepping operation of the right and left edge parts of a tread 12 is performed, mechanically enlarging the horizontal dimension on the basis of the step-in operation force F, and for mechanically restoring an original state in accordance with the release of the stepping operation. Thus, a mutual interval between a plurality of operation pedals for vehicle is secured so that an erroneous pedal operation can be suppressed, and the width dimension of the pedal pad 10 is substantially enlarged so that the stepping operation can be easily performed. Even when the edge parts of the pedal pad 10 in an initial state are stepped on, the contact area is increased in accordance with the enlargement so that a stable pedal operation can be performed. Especially, since there is a case that any temporal margin for re-stepping on a brake pedal is absent, the width dimension of the pedal pad 10 is enlarged as mentioned above so that noticeable effects can be obtained in the case of performing a stable braking operation.

Description

  The present invention relates to a pedal pad of an operation pedal for a vehicle, and more particularly to a technique that enables stable pedal operation even when the left and right ends of the pedal pad are stepped on.

  In a vehicle operation pedal such as an accelerator pedal or a brake pedal, a pedal pad is disposed at a lower end portion of a pedal arm so that a tread surface facing the driver's seat side is stepped on. The device described in Patent Document 1 is one example, and the position of the pedal pad can be adjusted up, down, left, and right. In addition, a plurality of such vehicle operation pedals are provided in the vehicle width direction, but are arranged at predetermined intervals in the left-right direction in order to suppress erroneous operations.

JP 2008-269484 A

  However, even in such a conventional vehicle operation pedal, there are cases where the left and right ends of the pedal pad are stepped on when the operation pedal is suddenly changed. There was a possibility of being forced to operate the pedal. For example, when braking a vehicle by depressing the brake pedal, there is often no time to re-depress the brake pedal, and the brake operation continues in an unstable state with the pedal pad depressed. There is a need to. The end stepping means an unstable stepping state in which a part of the shoe sole protrudes from the pedal pad to the right side or the left side.

  The present invention has been made against the background of the above circumstances, and its purpose is to enable stable pedal operation even when the left and right ends of the pedal pad are stepped on. is there.

  In order to achieve this object, the first invention is a pedal pad that is disposed at the lower end portion of the pedal arm of the vehicle operation pedal, and the stepping surface facing the driver's seat side is stepped on. It has a tread surface enlargement mechanism that, when operated, mechanically expands the width dimension of the tread surface in the left-right direction based on the stepping operation force, and mechanically returns to its original state when the stepping operation is released It is characterized by.

  According to a second aspect of the present invention, in the pedal pad of the vehicle operation pedal according to the first aspect of the present invention, the tread surface enlargement mechanism is (a) a base member that is integrally fixed so as to extend in the left-right direction at the lower end of the pedal arm. And (b) a moving member disposed at least at one end in the left-right direction of the base member so as to be movable to an enlargement position for enlarging the width dimension, and (c) straddling the base member and the moving member. When the stepping surface is operated to be stepped on, the moving member is elastically deformed and the moving member is moved to the enlarged position, and when the stepping operation is released, the moving member is moved by elastic restoring force. And an elastic member for returning to the initial position.

  According to a third aspect of the present invention, in the pedal pad of the vehicle operation pedal according to the second aspect of the invention, (a) the moving member is slidable to the enlarged position at which the width dimension is enlarged at the left and right end portions of the base member (B) the elastic member is a leaf spring bent so that an intermediate portion in the left-right direction protrudes toward the tread surface side (that is, the driver's seat side), and both end portions thereof are the base member and (C) when the stepping surface is stepped on, the intermediate portion of the leaf spring is elastically deformed in a flat manner, whereby the slide member is slid to the enlarged position. The width dimension is enlarged.

  4th invention is the pedal pad of the operation pedal for vehicles of 2nd invention, (a) The said moving member bends to the said expansion position and the said tread side which protrude in the width direction in the edge part of the left-right direction of the said base member (B) the elastic member is a spring that urges the swinging member to rotate in a direction toward the initial position, and (c) When the swing member is stepped on, the swing member is rotated to the expansion position against the biasing force of the spring, and the width dimension is expanded.

  According to a fifth aspect of the present invention, in the pedal pad of the vehicle operation pedal according to the fourth aspect of the present invention, when one of the base member and the swing member is rotated to the enlarged position, A stopper that contacts the member and positions the swinging member at the enlarged position is provided.

  According to a sixth aspect of the present invention, in the pedal pad of the vehicle operation pedal according to any one of the first to fifth aspects of the present invention, a pair of the tread surface enlargement mechanisms are provided at both ends in the left-right direction of the pedal pad. When the right part is stepped, the right width is enlarged by the right tread enlargement mechanism, and when the left part of the tread is stepped, the left width is enlarged by the left tread mechanism. It is characterized by that.

  In such a pedal pad of an operation pedal for a vehicle, when the tread surface is stepped on, the width dimension in the left-right direction is mechanically expanded based on the stepping operation force, and the mechanical force is released along with the release of the stepping operation. Therefore, the width of the pedal pad is substantially enlarged while ensuring the space between the plurality of vehicle operation pedals to suppress erroneous pedal operation. The stepping operation becomes easy, and even when the end of the pedal pad in the initial state is stepped on, the contact area becomes large due to the enlargement, and a stable pedaling operation becomes possible.

  In the second aspect of the invention, the tread surface enlargement mechanism includes the base member, the moving member, and the elastic member. When the tread surface of the pedal pad is stepped on, the elastic member is elastically deformed to enlarge the moving member. While the width dimension is enlarged by being moved to the position, when the stepping operation is released, the moving member is returned to the initial position by the restoring force due to the elasticity of the elastic member. That is, the width dimension of the tread surface is reliably enlarged by the elastic deformation of the elastic member accompanying the stepping operation, and the moving member is reliably returned to the initial position by the restoring force of the elastic member when the stepping operation is released. The tread surface enlargement mechanism can be configured easily and compactly with a small number of parts.

  According to a third aspect of the present invention, when a slide member is used as the moving member and a leaf spring is used as the elastic member, when the tread surface is stepped on, the middle portion of the leaf spring is elastically deformed flatly. The slide member is slid to the enlarged position, the width dimension is enlarged, and the slide member is returned to the initial position by the restoring force of the leaf spring when the stepping operation is released, so that the effect of the second invention can be appropriately obtained. .

  According to a fourth aspect of the present invention, when the swing member is used as the moving member and the spring is used as the elastic member, when the tread is operated, the swing member is in an enlarged position against the urging force of the spring. When the stepping operation is released, the width dimension is enlarged, and the swinging member is returned to the initial position and rotated by the restoring force of the spring with the release of the stepping operation. Therefore, the effect of the second invention can be appropriately obtained.

  According to the fifth aspect of the present invention, since the stopper is provided on one of the base member and the swing member, and the swing member is positioned at the enlarged position by being brought into contact with the other member, the width dimension of the tread is increased. The position of the oscillating member in this state is stabilized, and pedal operation is facilitated.

  In the sixth aspect of the invention, since a pair of treading surface enlargement mechanisms are provided at both left and right ends of the pedal pad, a stable pedal operation can be achieved by enlarging the treading surface, regardless of which side of the pedal pad is stepped on. Is possible.

It is a perspective view of the pedal pad which is one Example of this invention. It is II-II arrow sectional drawing in FIG. 2A and 2B are views for explaining the operation of the tread surface enlargement mechanism when the pedal pad of FIG. 1 is stepped on, and are cross-sectional views corresponding to FIG. 2, in which FIG. 1A is an initial state and FIG. It is a figure which shows the state by which the width dimension of the right side of the tread was expanded by the tread expansion mechanism, and is a perspective view equivalent to FIG. It is a figure which shows the other Example of this invention, and is the front view seen from the tread side. It is VI-VI arrow sectional drawing in FIG. 6A and 6B are views for explaining the operation of the tread surface enlargement mechanism when the pedal pad of FIG. 5 is stepped on, and are cross-sectional views corresponding to FIG. 6, where FIG. 6A is an initial state and FIG.

  The present invention is preferably applied to a pedal pad of a brake pedal for a service brake that is assumed to be stepped on with a large stepping operation force and difficult to re-operate, but for an accelerator pedal, a clutch pedal, and a parking brake. The present invention can also be applied to a pedal pad of another vehicle operation pedal such as a brake pedal. The tread surface enlarging mechanism includes a base member, a moving member, and an elastic member as in the second aspect of the invention, for example, but at least when the tread surface is stepped on, the left and right sides of the tread surface are determined based on the stepping operation force. Any width dimension in the direction may be mechanically enlarged and mechanically return to the original state when the stepping operation is released.

  In the third invention, the slide member is disposed at the end of the base member, and the leaf spring is elastically deformed flat, whereby the slide member is slid to the enlarged position and the width dimension is enlarged. In carrying out the invention, the slide member can be slid using a slider link mechanism, a cam mechanism or the like instead of the leaf spring, and returned to the initial position by a spring such as a torsion coil spring or a tension coil spring. Instead of a slide member, a link member that can be moved to an enlarged position using a four-bar link can also be used.

  The swing member according to the fourth aspect of the present invention is pivotally connected to the base member via a connection pin that is substantially parallel to the tread surface and substantially perpendicular to the left-right direction, for example. A torsion coil spring is suitable as a spring for urging the swinging member in the direction toward the initial position, but other springs such as a compression coil spring can also be used. The stopper of the fifth invention may be provided on the base member or may be provided on the swing member.

  In the sixth aspect of the invention, the pair of treading surface enlargement mechanisms are provided at two positions biased to the left and right of the pedal pad. However, there is a high possibility that only one of the left and right ends will be stepped on, and the other end will be For example, when there is little possibility of stepping, it is only necessary to provide a tread surface enlargement mechanism on only one of the left and right. For example, in the case of a brake pedal for service brakes, there is a high possibility that the right end of the pedal pad will be stepped on when changing from the accelerator pedal arranged on the right side. It is only necessary to provide. In addition, the tread surface enlargement mechanism does not function when the center part of the pedal pad is stepped on, and the tread surface enlargement mechanism functions only when the end of the pedal pad is stepped on to increase the width dimension. good. When the width dimension of the pedal pad on the left and right is relatively small, various modes are possible, such as a tread surface enlargement mechanism for enlarging the tread surface in both the left and right directions at the center of the pedal pad.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a pedal pad 10 of a brake pedal for a service brake according to one embodiment of the present invention as viewed from the upper right side on the tread surface 12 side, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. The pedal pad 10 includes a base member 16 that is integrally fixed to the driver seat at the lower end of the pedal arm 14 by welding or the like. The base member 16 is a substantially flat plate made of metal and is fixed so as to extend substantially symmetrically from the pedal arm 14 in the left-right direction. The front surface of the base member 16, such as the driver's seat side, is made of rubber or vinyl chloride. A pad member 18 having a predetermined elasticity is fixed integrally. The pad member 18 is stepped on by the driver, and the tread 12 that is stepped on facing the driver's seat side includes the surface 20 of the pad member 18.

  Both end portions of the base member 16 in the left-right direction protrude left and right from the pad member 18, and slide members 22 and 24 having a U-shaped cross section (angular U-shape) are slidably fitted in the left-right direction. Are combined. The slide members 22 and 24 have a symmetric shape, and are made of a metal sliding member 26 fitted to the base member 16 and rubber or vinyl chloride integrally fixed to the outer surface of the sliding member 26. And a pad member 28 having a predetermined elasticity such as a pad member 28, and the tread 12 is configured to include a driver seat side surface 30 of the pad member 28. The pad members 28 of the slide members 22 and 24 are in close contact with the left and right end surfaces of the pad member 18, respectively. The pad members 18 and 28 may be integrally fixed to each other or may be integrally configured.

  The slide members 22 and 24 are slidable from an initial position shown in FIGS. 1 and 2 to an enlarged position projecting to the left and right sides (see the slide member 22 in FIG. 3B). The width dimension in the left-right direction can be enlarged. The leaf springs 32 and 34 are interposed between the slide members 22 and 24 and the base member 16, and when the tread 12 is stepped on and the leaf springs 32 and 34 are elastically deformed, the slide members are inserted. When the stepping operation is released, the slide members 22 and 24 are returned to the initial position by the restoring force due to the elasticity of the leaf springs 32 and 34 and the pad member 18. That is, one end portion 36 in the left-right direction of the leaf springs 32, 34 is fixed to the base member 16 by welding or the like, the other end portion 38 is fixed to the slide members 22, 24, and the intermediate portion 40 is on the tread 12 side, that is, driving. It is curved in an arc shape so as to protrude to the seat side, and when the tread surface 12 is stepped on, the intermediate portion 40 of the leaf springs 32, 34 is elastically deformed flatly to slide together with the other end portion 38. The members 22 and 24 are slid outward to increase the width dimension. When the stepping operation is released, the intermediate portion 40 of the leaf springs 32 and 34 is restored to its original arc shape by its own elasticity, and the slide members 22 and 24 are returned to the initial position together with the restoring force of the pad member 18. It is.

  FIG. 3 shows a case where the shoe 42 is stepped on in a state where the shoe 42 protrudes from the right end portion of the pedal pad 10, and (a) is an initial state where the shoe 42 is just put on. (b) is a state in which the right side leaf spring 32 is elastically deformed flat together with the pad members 18 and 28 by the stepping operation force F, so that the right side slide member 22 is slid to the enlarged position. The width dimension of 12 is increased to the right by the enlarged width L1. FIG. 4 is a perspective view of the pedal pad 10 when the right slide member 22 is slid to the enlarged position as shown in FIG. 3B, and the alternate long and short dash line is the shape in the initial state. As a result, the contact area between the shoe 42 and the tread 12 is increased, and in the case of FIG. 3, the entire region in the left-right direction of the shoe 42 is brought into contact with the tread 12, thereby enabling stable pedal operation. When the stepping operation is released, as shown in FIG. 3A, the intermediate portion 40 of the leaf spring 32 is restored to its original arc shape by its own elasticity, and the slide member 22 is returned to the initial position. A predetermined distance is ensured between the accelerator pedal and the accelerator pedal arranged on the right side of the brake pedal, and erroneous pedal operation is suppressed.

  When the left end portion of the pedal pad 10 is stepped on, the left slide member 24 is slid to the enlarged position, and the width dimension of the tread 12 is increased in the left direction by the enlarged width L1. In this embodiment, the base member 16, the right slide member 22, and the leaf spring 32 constitute the right tread surface enlargement mechanism 44, and the base member 16, the left slide member 24, and the leaf spring 34 constitute the left tread surface. An enlargement mechanism 46 is configured. The slide members 22 and 24 correspond to moving members, and the leaf springs 32 and 34 correspond to elastic members.

  In such a pedal pad 10, when the left and right ends of the tread surface 12 are stepped on, the width dimension in the left and right directions is mechanically enlarged based on the stepping operation force F, and the stepping operation is released. Accordingly, the tread surface enlargement mechanisms 44 and 46 that mechanically return to the original state are provided, so that the pedal pad is substantially reduced while ensuring the interval between the plurality of vehicle operation pedals to suppress erroneous pedal operation. The width dimension of 10 is enlarged and the stepping operation becomes easy. Even when the end of the pedal pad 10 in the initial state is stepped on, the contact area is increased by the enlargement and the stable pedal operation is possible. In particular, since there is a case where the brake pedal does not have time to re-depress, the width of the pedal pad 10 is increased in this way, so that a remarkable effect can be obtained in performing a stable braking operation.

  In the present embodiment, the tread surface enlargement mechanisms 44, 46 are configured to include the base member 16, the slide members 22, 24, and the leaf springs 32, 34, and the tread surface 12 of the pedal pad 10 is stepped on. When the leaf springs 32 and 34 are elastically deformed and the slide members 22 and 24 are moved to the enlarged position, the width dimension is enlarged. On the other hand, when the stepping operation is released, the elasticity of the leaf springs 32 and 34 is applied. The slide members 22 and 24 are returned to the initial positions by the restoring force. That is, the width dimension of the tread 12 can be surely increased by the elastic deformation of the leaf springs 32 and 34 accompanying the stepping operation, and the slide member 22 is restored by the restoring force of the leaf springs 32 and 34 when the stepping operation is released. , 24 can be reliably returned to the initial position. Further, when the intermediate portion 40 of the leaf springs 32 and 34 is elastically deformed flatly, the slide members 22 and 24 are slid to the enlarged position to increase the width dimension, and with the release of the stepping operation. Since the slide members 22 and 24 are returned to the initial positions by the restoring force of the leaf springs 32 and 34, the tread surface enlargement mechanisms 44 and 46 can be easily and compactly configured with a small number of parts.

  Further, in this embodiment, since a pair of tread surface enlargement mechanisms 44 and 46 are provided at both left and right end portions of the pedal pad 10, the tread surface can be treaded regardless of which side of the pedal pad 10 is treaded. Stable pedal operation becomes possible by enlarging 12.

Next, another embodiment of the present invention will be described.
FIG. 5 is a front view of the pedal pad 50 of the brake pedal for the service brake as viewed from the tread surface 52 side, and FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. FIG. 7 is a cross-sectional view corresponding to FIG. 3, illustrating the operation of the pedal pad 50. The pedal pad 50 includes a base member 56 that is integrally fixed to the driver seat at the lower end of the pedal arm 54 by welding or the like. The base member 56 is a substantially flat plate member made of metal, and is fixed so as to extend from the pedal arm 54 in a left-right direction substantially symmetrically. Oscillating members 62 and 64 are connected via connecting pins 58 and 60 that are substantially perpendicular to the direction.

  Each of the swing members 62 and 64 is a substantially flat plate made of metal, and is attached to the base member 56 so as to be rotatable around the axis of the connection pins 58 and 60. A pair of torsion coil springs 66 and 68 are disposed on the connecting pins 58 and 60, respectively, and are locked to the base member 56 and the swinging members 62 and 64. In the natural state, as shown in FIG. The moving members 62 and 64 are each held at an initial position where they are bent toward the driver's seat at an inclination angle θ. The swing members 62 and 64 are rotated to an enlarged position (refer to the swing member 62 in FIG. 7B) that is substantially flush with the base member 56 while elastically deforming the torsion coil springs 66 and 68. The width of the tread surface 52 of the pedal pad 50 in the left-right direction is enlarged, and the pedal pad 50 is returned to the initial position shown in FIGS. 6 and 7A according to the restoring force of the torsion coil springs 66 and 68. It is. Stoppers 70 and 72 projecting inwardly, that is, toward the base member 56, are fixed to the back surfaces of the swing members 62 and 64, respectively. The swing members 62 and 64 are substantially the same as the base member 56. When the stoppers 70 and 72 are pivoted to the enlarged position where they are flush with each other, the swinging members 62 and 64 are positioned at the enlarged position by being brought into contact with the back surface of the base member 56 and are rotated further. Movement is blocked.

  A pad member 74 having a predetermined elasticity such as rubber or vinyl chloride is integrally fixed to the front surface of the base member 56 and the swing members 62 and 64, that is, the surface on the driver's seat side. It is wound from the end of 64 to the back side. As shown in FIG. 6, the pad member 74 is formed with the swinging members 62 and 64 held at the initial positions. The swinging members 62 and 64 are padded in addition to the torsion coil springs 66 and 68. The member 74 is rotated to the enlarged position while being elastically deformed, and is returned to the initial position by a restoring force due to such elasticity. The pad member 74 is stepped on by the driver, and the tread surface 52 that is stepped on facing the driver's seat side includes a flat central portion 76 in the surface of the pad member 74 and inclined portions 78 on both sides thereof. 80.

  Accordingly, when the shoe 42 hits the inclined portions 78 and 80 when the tread surface 52 is stepped on, the swinging members 62 and 64 are elastically deformed by the stepping operation force F while the torsion coil springs 66 and 68 and the pad member 74 are elastically deformed. It is rotated to the enlargement position, and the width dimension of the tread surface 52 (the dimension in the left-right direction in FIGS. 5 to 7) is enlarged. When the stepping operation is released, the swinging members 62 and 64 are returned to the initial position and rotated by the restoring force due to the elasticity of the torsion coil springs 66 and 68 and the pad member 74. FIG. 7 shows a case where the shoe 42 is stepped on in a state where the shoe 42 protrudes from the right end portion of the pedal pad 50, and (a) is an initial state. (b) is a case where the right swinging member 62 is rotated to the enlarged position by the stepping operation force F, and the width dimension of the tread surface 52 is increased rightward by the enlarged width L2. As a result, the contact area between the shoe 42 and the tread surface 52 is increased, and a stable pedal operation is possible. When the stepping operation is released, the swinging member 62 is returned to the initial position as shown in FIG. 7A, so that a predetermined separation dimension is ensured between the accelerator pedal and the accelerator pedal arranged on the right side of the brake pedal. Incorrect pedal operation is suppressed. When the end of the inclined portion 78 is stepped on as shown in FIG. 7 (a), the inclination angle θ is set so that the swinging member 62 is smoothly rotated to the enlarged position and has a predetermined enlarged width L2. It is determined as appropriate so that it can be secured, and in this embodiment, it is in the range of about 30 ° to 40 °.

  When the left end portion of the pedal pad 50 is stepped on, the left swing member 64 is rotated to the enlarged position, and the width dimension of the tread surface 52 is increased by the enlarged width L2 in the left direction. In this embodiment, the base member 56, the right connecting pin 58, the swinging member 62, the torsion coil spring 66, and the stopper 70 constitute a right tread surface expanding mechanism 82. The base member 56, the left connecting pin 60, The swinging member 64, the torsion coil spring 68, and the stopper 72 constitute a left tread surface enlarging mechanism 84. The swing members 62 and 64 correspond to moving members, and the torsion coil springs 66 and 68 correspond to elastic members.

  Also in this embodiment, when the left and right end portions of the tread surface 52 are stepped on, the width dimension in the left and right directions is mechanically expanded based on the stepping operation force F, and the machine is moved along with the release of the stepping operation. Therefore, the width of the pedal pad 50 is substantially reduced while ensuring the space between the plurality of vehicle operation pedals to suppress erroneous pedal operation. Similar to the above embodiment, the size is enlarged and the stepping operation becomes easy, and even when the end of the pedal pad 50 is stepped on in the initial state, the contact area is increased by the enlargement and the stable pedal operation is possible. The effect is obtained.

  In this embodiment, the swing members 62 and 64 are used as the moving members, and the torsion coil springs 66 and 68 are used as the elastic members. When the tread surface 52 is stepped on, the torsion coil springs 66 and 68 are used. When the swinging members 62 and 64 are rotated to the enlarged position against the urging force, the width dimension is enlarged, and the torsion coil springs 66 and 68 are swung by the restoring force of the torsion coil springs 66 when the stepping operation is released. Since the members 62 and 64 are returned to the initial position and rotated, the tread surface expanding mechanisms 82 and 84 can be configured simply and compactly with a small number of parts.

  In this embodiment, the stoppers 70 and 72 are provided on the swing members 62 and 64, and the swing members 62 and 64 are positioned at the enlarged position by being brought into contact with the base member 56. Since the movement is blocked, the positions of the swing members 62 and 64 in a state where the width dimension of the tread surface 52 is enlarged are stabilized, and the pedal operation becomes easy.

  As mentioned above, although the Example of this invention was described in detail based on drawing, these are one embodiment to the last, and this invention is implemented in the aspect which added the various change and improvement based on the knowledge of those skilled in the art. be able to.

  10, 50: Pedal pad 12, 52: Tread 14, 54: Pedal arm 16, 56: Base member 22, 24: Slide member (moving member) 32, 34: Leaf spring (elastic member) 40: Intermediate portion 44, 46 : Treading surface expansion mechanism 62, 64: Oscillating member (moving member) 66, 68: Torsion coil spring (elastic member, spring) 70, 72: Stopper 82, 84: Treading surface expansion mechanism F: Depression operation force L1, L2: Expansion width

Claims (6)

A pedal pad disposed at a lower end portion of a pedal arm of a vehicle operation pedal, wherein a tread surface facing a driver's seat side is stepped on;
When the step surface is stepped on, the lateral width of the step surface is mechanically expanded based on the stepping operation force, and the step surface is expanded mechanically when the stepping operation is released. A pedal pad for an operation pedal for a vehicle, characterized by comprising a mechanism. The tread expansion mechanism is
A base member integrally fixed so as to extend in the left-right direction at the lower end of the pedal arm;
A moving member disposed at least at one end in the left-right direction of the base member so as to be movable to an enlargement position for enlarging the width dimension;
It is disposed across the base member and the moving member, and when the tread surface is stepped on, it is elastically deformed to move the moving member to the enlarged position, while the stepping operation is released. The pedal pad of the vehicle operation pedal according to claim 1, further comprising: an elastic member that returns the moving member to an initial position with a restoring force due to elasticity. The moving member is a slide member arranged at the end in the left-right direction of the base member so as to be slidable to the enlarged position for enlarging the width dimension,
The elastic member is a leaf spring bent so that an intermediate portion in the left-right direction protrudes toward the tread surface, and both end portions are connected to the base member and the slide member, respectively.
When the tread is stepped on, the middle part of the leaf spring is elastically deformed flatly, whereby the slide member is slid to the enlargement position and the width dimension is enlarged. The pedal pad of the vehicle operation pedal according to claim 2. The moving member is a swinging member rotatably connected to an end portion in the left-right direction of the base member so as to be able to rotate to the enlarged position protruding in the width direction and an initial position bent to the tread surface side,
The elastic member is a spring that urges the swinging member to rotate in a direction toward the initial position,
3. The width dimension is expanded according to claim 2, wherein when the swinging member is stepped on, the swinging member is rotated to the expansion position against the biasing force of the spring, and the width dimension is expanded. The pedal pad of the described vehicle operation pedal. One of the base member and the swinging member has a stopper that contacts the other member when the swinging member is rotated to the enlarged position and positions the swinging member at the enlarged position. The pedal pad of the vehicle operation pedal according to claim 4, wherein the pedal pad is provided. The tread surface enlargement mechanism is provided in a pair at both ends in the left-right direction of the pedal pad. The pedal of the vehicle operation pedal according to any one of claims 1 to 5, wherein, when the left portion of the tread is operated, the left width is enlarged by the left tread enlargement mechanism. pad.

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