JP2010224651A - Pedal device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pedal device for a vehicle making a support part smoothly move backward when a vehicle collides. <P>SOLUTION: A pressing member 9 is configured so as to be relatively turnable around a second turning axial center Ax2 with respect to a bracket 3 to push a support part 6 backward when a vehicle collides, and is provided with a backward abutting part 9c for, in such a state that it is made to stand still with respect to the bracket 3 in a normal time, making the support part 6 stay at a normal position Po by supporting a shaft 4a of the support part 6 located at the front end side of a long hole 5 from behind. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pedal device for a vehicle.

  2. Description of the Related Art Conventionally, a vehicular pedal device is known in which a pedal portion on a lower end side of a pedal arm is moved forward by moving a fulcrum portion on the upper end side of the pedal arm rearward in a vehicle collision (for example, a patent Reference 1).

JP 2006-160150 A

  However, in the vehicle pedal device of Patent Document 1, since the fulcrum portion moves backward while breaking a part of the bracket, an extra force is required to break the fulcrum portion, and the fulcrum portion moves backward. There was a risk that smooth movement would be suppressed.

  Then, an object of this invention is to obtain the pedal apparatus for vehicles which can move a fulcrum part back more smoothly at the time of a vehicle collision.

  In the present invention, in the event of a vehicle collision, the pressing member having a front abutting portion that pushes the fulcrum portion from the front and moves the fulcrum portion rearward along a track formed on the bracket. On the other hand, the most important feature is that a rear abutting portion is provided to keep the fulcrum portion at the normal position by supporting the fulcrum portion in the track from the rear in a stationary state.

  According to the present invention, in a normal state, the pressing member is kept stationary with respect to the bracket, so that the fulcrum portion on the front end side in the track is held at the normal position, and the stationary state of the pressing member with respect to the bracket is released in the event of a vehicle collision By doing so, the fulcrum part can be moved backward along the track. Therefore, the fulcrum part can be moved rearward more smoothly as much as it is not necessary to break part of the bracket as in the prior art.

FIG. 1 is a side view of a vehicle pedal device according to an embodiment of the present invention. FIG. 2 is a rear view of the upper portion of the vehicle pedal device according to the embodiment of the present invention. FIG. 3 is a side view of the upper portion of the vehicle pedal device according to the embodiment of the present invention. FIG. 4 is a side view of the vehicle pedal device according to the embodiment of the present invention at the time of a vehicle collision. FIG. 5 is a diagram illustrating a movement locus of a guide slit formed on a fulcrum portion and a pressing member with respect to a track during a vehicle collision of the vehicle pedal device according to the embodiment of the present invention. 6 is a cross-sectional view taken along the line VI-VI in FIG. FIG. 7 is a side view of a bracket of a modified example of the vehicle pedal device according to the embodiment of the present invention. FIG. 8 is a side view of the vehicle pedal device according to the modification of the embodiment including the bracket of FIG. 7 at the time of a vehicle collision. FIG. 9 is a side view of a bracket of another modified example of the vehicle pedal device according to the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Below, the case where the vehicle pedal apparatus concerning this invention is implemented as a brake pedal apparatus is illustrated. In the figure, FR represents the front of the vehicle, UP represents the vehicle upper side, and WD represents the vehicle width direction.

  The brake pedal device 1 includes a bracket 3 attached to a dash panel 2 as a first vehicle body member, and a pedal arm 4 that is rotatably supported by the bracket 3.

  As shown in FIGS. 1 and 2, the bracket 3 has a pair of left and right vertical wall portions 3a and a top wall portion 3b constructed between upper end edges of the pair of vertical wall portions 3a. It has a substantially inverted U-shaped cross-sectional shape that is opened, and is formed by bending a plate-shaped metal member.

  As shown in FIG. 2, each of the pair of vertical wall portions 3a, 3a has substantially the same shape, is formed perpendicular to the vehicle width direction, extends in the vertical direction and in the front-rear direction, and is disposed in parallel to each other. Yes. The upper edge of the vertical wall portion 3a extends substantially along the horizontal direction, while the lower edge is inclined upward toward the rear, and is formed in a tapered trapezoidal shape toward the rear. .

  The pair of vertical wall portions 3a, 3a are respectively formed with long holes 5, 5 having a constant width and extending in the horizontal direction substantially along the front-rear direction. These long holes 5 and 5 overlap in a horizontal view from the vehicle width direction. The long holes 5 and 5 have a substantially cylindrical shaft 4a penetrating along the vehicle width direction in a state of being abutted against the front end thereof. The cylindrical portion 4b covering the shaft 4a is connected to a pedal. The upper end portion of the arm portion 4c of the arm 4 is fixed. The cylindrical portion 4b is configured to be able to rotate around the shaft 4a around the central axis (Ax1) of the shaft 4a. In the present embodiment, this central axis corresponds to the rotational axis Ax1 of the pedal arm 4, and the shaft 4a and the cylindrical portion 4b correspond to the fulcrum portion 6 disposed on the upper end side of the pedal arm 4. Further, the position of the fulcrum portion 6 in FIG. 1 is the normal position Po. The shaft 4a is prevented from coming off in the axial direction with respect to the bracket 3, the cylindrical portion 4b, or a pressing member 9 described later, using a C-ring (not shown), a pin, a washer or the like.

  The arm portion 4c extends downward while being gently bent from the fulcrum portion 6, and a pedal portion 4d is provided at the lower end thereof. When the user (driver) depresses the pedal portion 4d forward, the pedal arm 4 rotates forward about the rotation axis Ax1 in the clockwise direction in FIG. 1 and pushes the push rod 7 forward. When the push rod 7 is pushed forward, the hydraulic pressure is increased in the brake device 8, and the vehicle is braked. On the other hand, when the depression of the pedal portion 4d is released, the pedal arm 4 rotates counterclockwise in FIG. 1 around the rotation axis Ax1 and returns to the initial position shown in FIG. It has become.

  A pressing member 9 is attached to the bracket 3. The pressing member 9 has two functions: a function of keeping the fulcrum part 6 at the normal position Po in a normal state and a function of moving the fulcrum part 6 rearward along the long holes 5 and 5 at the time of a vehicle collision. is doing.

  First, the function of the pressing member 9 to keep the fulcrum portion 6 at the normal position Po at the normal time will be described.

  The pressing member 9 is disposed so as to surround the bracket 3 from above, and is erected along the vertical wall portions 3a and 3a of the bracket 3 so as to be adjacent to the outer side or the inner side (the outer side in the present embodiment) in the vehicle width direction. The vertical wall portions 9a, 9a and the bridging portion 9b bridged between the vertical wall portions 9a, 9a have a pivot axis (second pivot axis) along the vehicle width direction. It is attached to the bracket 3 so as to be rotatable around Ax2. The rotation axis Ax2 is arranged in parallel with the rotation axis Ax1.

  Here, in this embodiment, the shaft 10a that forms the rotational axis Ax2 is passed through the through hole 10b formed in at least one of the bracket 3 and the pressing member 9, and the shaft 10a is caulked to hold the holding mechanism. 10 is formed. In the present embodiment, the shaft 10a is fixed to the bracket 3, and both end portions of the shaft 10a passing through the through hole 10b formed in the pressing member 9 are crushed in a direction close to the axial direction, and a pair of overhang portions 10c, 10c , The vertical wall portion 9a and the vertical wall portion 3a are sandwiched between the pair of projecting portions 10c, 10c, and the shaft 10a is expanded in diameter to be pressed against the inner surface side of the through hole 10b. Is stationary with respect to the bracket 3.

  As shown in FIG. 1, the pressing member 9 that is stationary with respect to the bracket 3 by the holding mechanism 10 supports the fulcrum part 6 in the long hole 5 from behind, thereby making the fulcrum part 6 long. A rear abutting portion 9c is provided that stays at the normal position Po on the front end side in the hole 5. That is, the vertical wall portion 9a of the pressing member 9 is formed with a long hole 9d through which the fulcrum portion 6 (the shaft 4a thereof) passes, and a rear side portion of the long hole 9d (right side portion in FIG. 1). Is the rear contact portion 9c.

  That is, in this embodiment, by supporting the fulcrum part 6 arranged on the front end side in the long hole 5 by the rear abutting part 9c of the pressing member 9 which is stationary with respect to the bracket 3 by the holding mechanism 10, The fulcrum part 6 is arranged at the normal position Po.

  Further, as shown in FIG. 3, the contact surface Pt between the fulcrum part 6 and the rear contact part 9c is relative to a virtual straight line L perpendicular to both the rotation axis Ax1 and the second rotation axis Ax2. It is supposed to be vertical. By setting the contact surface Pt in this way, a rotational moment around the rotation axis Ax2 is generated by the force acting in the direction perpendicular to the contact surface Pt between the fulcrum portion 6 and the rear contact portion 9c. It is possible to suppress the pressing member 9 from rotating unintentionally with respect to the bracket 3 at the normal time.

  Next, the function of the pressing member 9 to move the fulcrum part 6 rearward along the long hole 5 at the time of a vehicle collision will be described.

  As shown in FIG. 1, a steering shaft 11 as a second vehicle body member extending along the vehicle width direction is disposed behind the pressing member 9, and the steering shaft 11 is disposed behind the pressing member 9. The receiving part 11a is provided so that it may respond | correspond with a space | interval. Therefore, as shown in FIG. 4, when the brake device 8, the push rod 7, the bracket 3, the pedal arm 4, and the pressing member 9 are moved together as a unit together with the dash panel 2 in the event of a vehicle collision, Of these, only the pressing member 9 is relatively pushed forward by the receiving portion 11a. Here, in this embodiment, the point of action of the force from the receiving portion 11a to the pressing member 9 is set above the rotation axis Ax2, and the holding state by the holding mechanism 10 is not released during normal use. It is released by the pressing force from the receiving part 11a.

  Therefore, the pressing member 9 pushed forward by the receiving portion 11a rotates in a predetermined direction (counterclockwise direction in FIGS. 4 and 1) around the rotation axis Ax2, and the shaft 4a of the fulcrum portion 6 is moved. Press from the front to the back. That is, the front side portion (the left side portion in FIGS. 3 and 1) of the long hole 9d is a front contact portion 9e. The long hole 9d is formed to be bent with a substantially constant width. Moreover, the two long holes 9d and 9d formed in the left and right vertical wall portions 9a and 9a overlap each other in a horizontal view from the vehicle width direction.

  In such a configuration, as shown in FIG. 5, as the pressing member 9 pushed relatively forward by the receiving portion 11a relatively moves (relatively rotates in this embodiment) with respect to the bracket 3, The shaft 4 a of the fulcrum part 6 is arranged at the intersection of the long hole 5 formed in the vertical wall part 3 a of the bracket 3 and the long hole 9 d formed in the vertical wall part 9 a of the pressing member 9. Therefore, the shape of the long hole 9d is considered so that the fulcrum portion 6 performs the intended rearward movement as the pressing member 9 moves relative to the bracket 3 in addition to the angle setting of the contact surface Pt. It is preferable to set as follows.

  Moreover, in this embodiment, the elongate holes 9d and 9d are extended with a width slightly larger than the diameter of the shaft 4a of the fulcrum part 6, so that the pressing member 9 is a shaft of the fulcrum part 6 as shown in FIG. While pushing 4a rearward, the shaft 4a remains inserted into the long hole 9d and is sandwiched between the front contact portion 9e and the rear contact portion 9c. Furthermore, in this embodiment, as shown in FIG. 6, the long hole 5 and the long hole 9d are formed on both sides of the bracket 3 and the pressing member 9 in the vehicle width direction, and these are respectively from the vehicle width direction. In the horizontal view of each other. Therefore, the positions (intersections of the long holes 5 and 9d) where the longitudinal ends of the shaft 4a of the fulcrum part 6 are arranged also overlap each other in a horizontal view from the vehicle width direction. That is, since the shaft 4a is sandwiched between the front contact portion 9e and the rear contact portion 9c at two positions separated in the vehicle width direction at substantially the same position in the front-rear direction, the shaft 4a is pressed by the pressing member 9. During movement, the shaft 4a does not tilt with respect to the vehicle width direction (tilt in the left-right direction in FIG. 6), but remains in the posture at the normal position Po, that is, in the posture along the vehicle width direction (vertical direction in FIG. 6). , Can move backwards. If the shaft 4a is tilted with respect to the vehicle width direction while moving backward, the shaft 4a and other parts of the pedal arm 4 may interfere with the bracket 3 and other vehicle body parts and the like, making it difficult to move backward smoothly. However, according to such a configuration, such a problem can be suppressed.

  When the fulcrum portion 6 moves rearward as described above, the arm portion 4c tilts backward about the connection portion with the push rod 7 as shown in FIG. 4, and the pedal portion 4d moves relatively forward. Move to. Accordingly, it is possible to secure a wider foot space in the vicinity of the pedal portion 4d at the time of a vehicle collision.

  As described above, in the present embodiment, the pressing member 9 supports the shaft 4a of the fulcrum portion 6 on the front end side in the long hole 5 as the track from the rear while being stationary with respect to the bracket 3. Thus, a rear abutting portion 9c that keeps the fulcrum portion 6 at the normal position Po is provided. Therefore, at the normal time, by pressing the pressing member 9 with respect to the bracket 3, the fulcrum portion 6 on the front end side in the long hole 5 as a track is held at the normal position Po. By releasing the stationary state with respect to the bracket 3, the fulcrum part 6 can be moved backward along the track. Therefore, the fulcrum portion 6 can be moved rearward more smoothly because it is not necessary to break a part of the bracket 3 as in the prior art. In addition, since the fulcrum part 6 can be arranged in the track at normal time, the fulcrum part 6 is smoothly shifted from the stationary state to the moving state in the track by releasing the stationary state of the pressing member 9 with respect to the bracket 3. be able to.

  Moreover, in this embodiment, the holding mechanism 10 which makes the press member 9 stationary with respect to the bracket 3 at the time of normal is provided. Therefore, the pressing mechanism 9 can be stably stopped by the bracket 3 by the holding mechanism 10, and it is easy to suppress the relative movement of the pressing member 9 relative to the bracket 3 at a normal time.

  In the present embodiment, the holding mechanism 10 is configured separately from the fulcrum portion 6. When the fulcrum part 6 is incorporated as a part of the holding mechanism 10, when the stationary state by the holding mechanism 10 is released, the fulcrum part 6 may be deformed and the smooth movement of the fulcrum part 6 may be hindered. However, in this embodiment, since the holding mechanism 10 is configured separately from the fulcrum portion 6, such a problem is unlikely to occur.

  In the present embodiment, the pressing member 9 is supported by the bracket 3 so as to be rotatable about a second rotation axis Ax2 parallel to the rotation axis Ax1 of the fulcrum portion 6, and the pressing member 9 and the bracket The holding mechanism 10 is formed by penetrating the shaft 10a forming the second rotational axis Ax2 through the through hole 10b formed in at least one of the three and caulking the shaft 10a. Therefore, since the shaft 10a used to rotatably support the pressing member 9 on the bracket 3 can be used as the holding mechanism 10, the configuration can be made more compact than when these are provided separately. it can.

  Further, in the present embodiment, the pressing member 9 is supported by the bracket 3 so as to be rotatable around the second rotation axis Ax2 parallel to the rotation axis Ax1 of the fulcrum part 6, and the fulcrum part 6 and the rear side. The contact surface Pt with the contact portion 9c is set to be perpendicular to the virtual straight line L perpendicular to both the rotation axis Ax1 and the second rotation axis Ax2. Therefore, it is possible to suppress the generation of the rotational moment around the rotation axis Ax2 due to the force acting in the direction perpendicular to the contact surface Pt between the fulcrum portion 6 and the rear contact portion 9c. 3 can be prevented from rotating unintentionally.

  In the present embodiment, the pair of the front contact portion 9e and the rear contact portion 9c disposed behind the front contact portion 9e across the shaft 4a of the fulcrum portion 6 is the axis of the rotation axis Ax1. Two are provided at intervals in the direction. Therefore, since the position in the front-rear direction of the shaft 4a of the fulcrum portion 6 can be defined by the pressing member 9 at two locations separated in the vehicle width direction, the shaft 4a pressed by the pressing member 9 is being moved, It becomes easy to move backward while maintaining the posture at the normal position Po, that is, the posture along the vehicle width direction. If the shaft 4a is tilted in the middle of the backward movement, it may be difficult to move smoothly, but according to such a configuration, such a problem can be suppressed.

  (Modifications) FIGS. 7 to 9 show modifications of the above embodiment. 7 and 8, the bracket 3 has a long hole 5 as a return restraint portion that prevents the fulcrum portion 6 that has moved rearward along the long hole 5 serving as a track when the vehicle collides. A notch 12 that is recessed downward from the rear end portion is provided. The notches 12 are provided on both of the pair of vertical wall portions 3a, and the pair of notches 12 and 12 are overlapped in a horizontal view from the vehicle width direction.

  When the vehicle crashes, the shaft 10a of the fulcrum portion 6 pushed backward by the pressing member 9 reaches the rear end portion of the long hole 5 and enters the notch 12 by gravity as shown in FIG. When entering the notch 12, the front edge of the notch 12 prevents the shaft 10a from returning forward. Therefore, according to this modified example, it is possible to suppress a situation in which the effect caused by the fulcrum portion 6 returning to the front and moving the fulcrum portion 6 backward for some reason is impaired.

  Moreover, in the modification of FIG. 9, the narrow part 12A which narrowed the width | variety of the rear-end part of the long hole 5 is provided as a return suppression part. Therefore, when the fulcrum part 6 reaches the rear end part of the long hole 5, the fulcrum part 6 is sandwiched by the narrow part 12 </ b> A and cannot return to the front.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made. In the above embodiment, the track is formed as a long hole, but it may be formed as a slit with the other end in the longitudinal direction cut out.

  In addition, the pressing member may be configured to be able to move relative to the bracket by abutting against the receiving portion, and it is not essential that the pressing member be rotatable. For example, you may comprise as what has a mechanism (for example, link mechanism etc.) which can convert the pressing force by a receiving part into a backward movement of a pressing member and a fulcrum part.

  In addition, specifications such as the shape and size of each component such as the bracket, the pressing member, the fulcrum part, and the like can be changed as appropriate. Further, the holding mechanism may be configured separately from the configuration related to the second rotation axis, or the holding mechanism may be embodied by a configuration other than the caulking structure of the shaft. Further, the return suppressing portion is not limited to the above-described modified example, and may be configured as a protrusion that can be overcome by movement, for example.

1 Brake pedal device (vehicle pedal device)
2 Dash panel (first body member)
3 Bracket 4 Pedal arm 4d Pedal part 5 Long hole (track)
6 fulcrum part 7 push rod 9 pressing member 9c rear contact part 9e front contact part 10 holding mechanism 10a shaft 10b through hole 11 steering shaft (second body member)
11a Receiving part 12 Notch (return suppression part)
12A Narrow part (return suppression part)
Ax1 axis of rotation Ax2 (second) axis of rotation L Virtual straight line Po Normal position Pt Contact surface

Claims (6)

A pedal arm having a fulcrum portion disposed on the upper end side and a pedal portion disposed on the lower end side, and coupled to a forward push rod between the fulcrum portion and the pedal portion;
A bracket that is attached to the first vehicle body member, normally supports the fulcrum part at a normal position, and has a track formed to move and guide the fulcrum part rearward in a vehicle collision;
The bracket is attached to the bracket so as to be relatively movable, and is pushed forward from a receiving portion provided in a second vehicle body member different from the first vehicle body member as the bracket moves backward during a vehicle collision. A pressing member having a front abutting portion that pushes the fulcrum portion from the front by moving relative to the bracket;
In the normal state, the pedal arm is rotatable around the pivot axis of the fulcrum portion, and the push rod is pushed forward by stepping forward of the pedal portion. In the vehicle pedal device configured to move the pedal portion forward by moving the fulcrum portion pushed by the portion backward along the track,
The pressing member is provided with a rear abutting portion that keeps the fulcrum portion at a normal position by supporting the fulcrum portion at the front end portion in the track from the rear while being stationary with respect to the bracket. The pedal device for vehicles characterized by the above-mentioned.   The vehicle pedal device according to claim 1, further comprising a holding mechanism that causes the pressing member to be stationary with respect to the bracket at a normal time. The pressing member is supported by the bracket so as to be rotatable around a second rotation axis parallel to the rotation axis of the fulcrum portion,
The holding mechanism is formed by passing a shaft forming the second rotation axis through a through hole formed in at least one of the pressing member and the bracket, and caulking the shaft. The vehicle pedal device according to claim 2. The pressing member is supported by the bracket so as to be rotatable around a second rotation axis parallel to the rotation axis of the fulcrum portion,
A contact surface between the fulcrum part and the rear contact part is set to be perpendicular to a virtual straight line perpendicular to both the rotation axis and the second rotation axis. The vehicle pedal device according to any one of claims 1 to 3.   5. The bracket according to any one of claims 1 to 4, wherein the bracket is provided with a return suppressing portion that suppresses the fulcrum portion that has moved rearward along the track in the event of a vehicle collision from returning forward. The pedal apparatus for vehicles as described.   Two pairs of the front contact portion and the rear contact portion disposed behind the front contact portion with the fulcrum portion interposed therebetween are provided at an interval in the axial direction of the rotation axis. The vehicle pedal device according to any one of claims 1 to 5, wherein

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