JP2005081910A - Foot-operated parking brake device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stepping type parking brake device which does not deform a steering column bracket even when a vehicle has a frontal collision.
A base plate 3 extended from a dash panel of a vehicle body toward the rear of the vehicle, and a pedal 7 rotatably supported by the base plate 3 via a support shaft 5 are provided. This is a foot-operated parking brake device 1 provided with a jockle 17 that deforms the base plate 3 in the vehicle front-rear direction by a load input from the front edge portion 13 toward the rear of the vehicle between the edge portion 13 and the support shaft 5. .
[Selection] Figure 2

Description

  The present invention relates to a foot-operated parking brake device, and more particularly to a foot-operated parking brake device having a structure in which a steering bracket is not deformed even when a load is input from the front of a vehicle.

  2. Description of the Related Art In recent years, a foot-operated parking brake device that applies a braking force to a vehicle when the driver steps on it has been adopted. This stepping type parking brake device has a front end fixed to a dash lower panel on the vehicle body side, a pedal mounting bracket extending from the dash lower panel toward the rear of the vehicle, and a rear end portion of the pedal mounting bracket. And a brake pedal that is supported and extends downward from the rear end portion.

A steering column bracket that supports the steering is disposed along the vehicle width direction on the vehicle rear side of the pedal mounting bracket (see, for example, Patent Document 1).
JP-A-7-196021

  However, in the background art described above, a steering column bracket is disposed on the vehicle rear side of the foot-operated parking brake device, and the foot-operated parking brake device is disposed orthogonal to the major axis direction of the steering column bracket. Therefore, when a frontal collision occurs in the vehicle, the foot-operated parking brake device moves to the rear side of the vehicle and hits the steering column bracket. If this movement amount is large, the steering column bracket is deformed to the rear side of the vehicle. Then there was a risk of contacting the driver.

  Accordingly, an object of the present invention is to provide a foot-operated parking brake device that does not deform a steering column bracket even when a frontal collision occurs in a vehicle.

  In order to achieve the above object, a foot-operated parking brake device according to the present invention is disposed opposite to a vehicle front side of a steering column bracket disposed in a vehicle width direction, and a front edge portion thereof is fixed to a dash panel of a vehicle body. A base plate that extends from the dash panel toward the rear of the vehicle, and a pedal that is rotatably supported by the base plate via a support shaft and extends downward from the support shaft, A fragile portion is provided between the front edge of the base plate and the support shaft, which is a starting point for bending the base plate in the vehicle width direction when a compressive load in the vehicle longitudinal direction is applied to the base plate.

  According to the foot-operated parking brake device according to the present invention, since the weak portion that bends the base plate in the vehicle width direction is provided, the vehicle causes a frontal collision, and the foot-operated parking brake device moves to the rear of the vehicle and the steering column bracket When the base plate hits, the base plate is bent and deformed in the vehicle width direction starting from the fragile portion, and an excessive load is not applied to the steering column bracket. Therefore, there is no possibility that the steering column bracket is deformed and contacts the occupant.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, a stepping parking brake device applied to a vehicle in which the steering wheel is disposed on the right side in the vehicle width direction (that is, a so-called right-hand drive vehicle) will be described.

[First embodiment]
FIG. 1 is a perspective view showing a foot-operated parking brake device 1 according to this embodiment, and FIG. 2 is a side view of FIG. 1 viewed from the side. This foot-operated parking brake device 1 is disposed on the front side of a vehicle, and includes a base plate 3 that is bolted to a dash panel (not shown), and a pedal 7 that is rotatably supported by the base plate 3 via a support shaft 5. The base plate 3 and the stopper 9 are supported by the pedal 7. A pedal 7 is attached to the right side surface of the base plate 3 in the vehicle width direction, and a stopper 9 is attached to the left side surface of the base plate 3 in the vehicle width direction so that the base plate 3 is sandwiched between the pedal 7 and the stopper 9. It is configured.

  The base plate 3 is integrally formed from a base plate main body portion 11 extending along the vehicle front-rear direction and a base plate front edge portion 13 bent outward from the front end of the base plate main body portion 11 in the vehicle width direction (right side in the vehicle width direction). At the upper end of the base plate main body portion 11 and the lower end of the base plate front edge portion 13, a mounting portion 15 for bolting the foot-operated parking brake device 1 to a dash panel (not shown) on the vehicle body side is provided in the vehicle width direction. Are provided on the left and right sides with a gap.

  Further, in the base plate main body 11, between the base plate front edge portion 13 and the support shaft 5 of the pedal 7, a jockle 17 that is a fragile portion is formed along the vertical direction. As shown in FIG. 3, the jockle 17 is a step provided between the front side and the rear side of the base plate main body part 11 extending along the vehicle front-rear direction. The front main body part 11 a is more than the rear main body part 11 b. Is also arranged on the inner side in the vehicle width direction (left side in the vehicle width direction).

  Further, a ratchet 19 is attached to the rear lower end of the base plate main body 11. The ratchet 19 is formed in a substantially arc shape centering on the support shaft 5, and a large number of teeth 21 are formed in the lower part thereof, and claws 27 of a pedal lever 23 to be described later are engaged with these teeth 21. Is configured to do.

  As described above, the pedal 7 has the front end portion of the pedal lever 23 supported by the base plate 3 via the support shaft 5 so as to be rotatable. However, the pedal 7 is located outside the base plate 3 in the vehicle width direction (right side in the vehicle width direction). It is attached to the side. Pads 28 that the driver steps on are provided at the lower end of the pedal 7, and a lock mechanism 31 is provided between the pads 28 and the support shaft 5. The lock mechanism 31 includes the ratchet 19 fixed to the base plate 3 and a claw 27 that is attached to the pedal lever 23 and engages with the ratchet 19. The claw 27 is pedaled via a pin 25. The lever 23 is pivotally supported so as to be rotatable. As shown in FIGS. 1 and 2, the pedal lever 23 is provided with a bead 33 formed in a convex shape and a concave shape in the vehicle width direction, and the bead 33 improves the rigidity of the pedal lever 23.

  Further, as shown in FIG. 4, a substantially triangular step 35 is formed above the rear end of the pedal 7 in a side view. As shown in FIG. 5, the stepped portion 35 includes a pedal lever main body portion 37 that extends along the vehicle front-rear direction, and a vertical direction that bends from the rear end of the pedal lever main body portion 37 toward the left in the vehicle width direction. The wall 39 and the pedal lever bottom 41 extending from the end of the vertical wall 39 toward the rear of the vehicle are formed in a concave shape.

  A pedal lever flange 43 is bent from the rear end of the pedal lever bottom 41 toward the inner side in the vehicle width direction (left side in the vehicle width direction). In FIG. 5, a two-dot chain line is a line parallel to the major axis of the steering column bracket disposed to face the vehicle rear side of the stepped portion 35 of the pedal 7. The pedal lever flange portion 43 is formed to be inclined toward the vehicle rear side by an angle θ from the two-dot chain line.

  Furthermore, as shown in FIG. 2, the stopper 9 is attached to the base plate 3 and the pedal 7 from the left side in the vehicle width direction. Specifically, the vehicle front side is pivotally supported by the base plate 3 and the pedal 7 via the support shaft 5, and the vehicle rear side is pivotally supported by the pedal 7 via the pin 25.

  A deformation state of the foot-operated parking brake device 1 when a collision load F is input from the front side of the vehicle to the vehicle on which the foot-operated parking brake device 1 is disposed will be described.

  First, as shown in FIG. 6, when the vehicle has a frontal collision, a collision load F is input from the front end portion of the vehicle, and the dash panel 45 of the vehicle body is deformed and moves rearward. Since the foot-operated parking brake device 1 is attached to the dash panel 45, the foot-operated parking brake device 1 also moves rearward together with the dash panel 45, and the pedal lever flange portion 43 contacts the steering column bracket 47. To do.

  Here, as described with reference to FIG. 5, the pedal lever flange portion 43 extends obliquely at an angle θ toward the left side in the vehicle width direction, so that stress is applied to the pedal 7 toward the left side in the vehicle width direction. . As shown in FIG. 2, the base plate 3 is formed with a jockle 17 on the main body. Therefore, as shown in FIG. 7, the base plate 3 is bent starting from the jockle 17, and a stepping parking brake is used. The device 1 slides along the front portion of the steering column bracket 47 toward the left side in the vehicle width direction.

  The effects of the stepped parking brake device 1 of the present embodiment having the above-described configuration will be described.

  Since the base plate main body 11 is formed with a jockle 17 along the vertical direction, when the foot-operated parking brake device 1 moves rearward and collides with the steering column bracket 47 at the time of frontal collision of the vehicle, The base plate main body 11 is bent relatively easily in the vehicle width direction starting from the jockle 17, and an excessive load is not input to the extent that the steering column bracket 47 is deformed.

  Further, since the pedal lever flange portion 43 is bent obliquely along the vehicle width direction, the foot-operated parking brake device 1 slides along the steering column bracket 47 in the vehicle width direction at the time of frontal collision of the vehicle, and the steering column An excessive load is not applied to the bracket 47.

  Further, since the lock mechanism portion 31 is disposed between the jockle 17 of the base plate main body portion 11 and the pedal lever flange portion 43, the lock mechanism portion 31 is protected without being crushed even during a vehicle collision, and the brake operation after the collision is performed. Will not be disturbed.

  Since the stepped portion 35 is provided in the pedal lever 23 and the rigidity of the pedal lever 23 is improved by the stepped portion 35, the pedal lever 23 is deformed when the foot-operated parking brake device 1 collides with the steering column bracket 47. It is possible to reliably slide along the steering column bracket 47 without doing so.

  The pedal 7 is attached to the right side of the base plate 3 in the vehicle width direction, and the bending direction of the pedal lever flange 43 is set to the left side in the vehicle width direction, so that the foot-operated parking brake device 1 collides with the steering column bracket 47. Then, the pedal 7 is guided to the left side in the vehicle width direction. Therefore, even if the base plate 3 is deformed, the pedal 7 does not interfere with the base plate 3, so that the braking operation is not hindered even in the event of a vehicle collision.

[Second Embodiment]
Next, the second embodiment will be described. However, the same reference numerals are used for portions having the same structure as the first embodiment described above, and the description thereof is omitted.

  In the present embodiment, as shown in FIG. 8, the base plate 53 of the foot-operated parking brake device 51 is provided with notches 55 and 57 as weak parts.

  The base plate 53 fixed to the dash panel (not shown) extends along the rear of the vehicle in the same manner as the base plate 3 of the first embodiment, and the pedal 7 rotates via the support shaft 5 at the rear of the base plate 53. It is supported freely.

  A side-view V-shaped cut 55 is formed at the upper end between the front end 59 of the base plate 53 and the support shaft 5, and a side-view inverted V-shaped cut 57 is formed at the lower end.

  According to the present embodiment, since the cuts 55 and 57 are provided as the fragile portions, when the foot-operated parking brake device 51 moves to the rear of the vehicle at the time of a vehicle collision and a collision load is input from the steering column bracket, Since stress concentrates on these notches 55 and 57, the base plate 53 is deformed starting from the notches 55 and 57, and the foot-operated parking brake device 51 can be efficiently guided along the steering column bracket 47.

It is the perspective view which looked at the stepping type parking brake device by a 1st embodiment of the present invention from the slanting front. It is a side view of the foot-operated parking brake device of FIG. It is an expanded sectional view by the AA line of FIG. FIG. 3 is an enlarged view of a pedal upper end corner in FIG. 2. It is an expanded sectional view by the BB line of FIG. It is a top view of the initial stage in which the collision load was inputted into the vehicle by a 1st embodiment from the front. It is a top view which shows the state which the collision load is input into the vehicle by 1st Embodiment from the front, and the stepping type parking brake apparatus is deform | transforming. It is a side view of a foot-operated parking brake device according to a second embodiment of the present invention.

Explanation of symbols

F ... Collision load (compression load)
3 ... Base plate 5 ... Support shaft 7 ... Pedal 13, 59 ... Front edge 17 ... Jockle (fragile part)
31 ... Locking mechanism part 35 ... Step part 45 ... Dash panel 47 ... Steering column bracket 53 ... Base plate 55, 57 ... Notch (fragile part)

Claims (7)

  A base plate that is disposed on the vehicle front side of a steering column bracket provided along the vehicle width direction and extends from the dash panel of the vehicle body toward the rear of the vehicle, and is rotatable to the base plate via a support shaft. A pedal that is supported and extends downward, and when a compressive load in the vehicle longitudinal direction is applied to the base plate between the front edge of the base plate and the support shaft, the base plate is moved in the vehicle width direction. A foot-operated parking brake device characterized in that a weakened portion to be bent is provided.   The foot-operated parking brake device according to claim 1, wherein the fragile portion is a jockle formed along a vertical direction.   The foot-operated parking brake device according to claim 1, wherein the weak portion is a cut formed in at least one of an upper end portion and a lower end portion of the base plate.   A portion of the rear end edge of the pedal facing a steering column bracket disposed on the vehicle rear side of the pedal is bent obliquely forward with respect to the longitudinal direction of the steering column bracket to form a flange portion. The stepping type parking brake device according to any one of claims 1 to 3.   The foot pedal type parking brake device according to claim 4, wherein the pedal is attached to a side surface of the base plate on the outer side in the vehicle width direction.   The lock mechanism part which hold | maintains a pedal at a predetermined | prescribed rotation angle with respect to a baseplate is arrange | positioned in the vehicle rear side rather than the spindle of the said pedal, The any one of Claims 1-5 characterized by the above-mentioned. Foot-operated parking brake device.   The step part is provided in the site | part which opposes the steering column bracket arrange | positioned in the vehicle rear side of a pedal among the rear-end parts of the said pedal, The Claim 1 characterized by the above-mentioned. Foot-operated parking brake device.

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