JP2012083858A - Support structure for operation pedal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure stroke quantity which is sufficient for making a brake pedal leave by obtaining a small lever ratio by improving the degree of freedom of setting of the lever ratio under constraint on layout in the case of making an operation pedal leave a bracket according to the rotation of a rotation lever when a front collision occurs.SOLUTION: A support structure 1 of an operation pedal includes: a bracket 3 mounted on a dash panel P by which an operation pedal 2 is supported so as to freely oscillate in the backward and forward direction of a vehicle; a vehicle body side member 4 installed in the rear part of the vehicle of the dash panel P; a first rotation lever 6 supported so as to freely rotate via a first spindle 5 extended to the direction of vehicle width in the bracket 3, and configured to rotate around the first spindle 5 after being brought into contact with the vehicle body side member 4 when a front collision occurs; and a second rotation lever 8 supported so as to freely rotate via a second spindle 7 extended to the direction of the vehicle width in the bracket 3, and configured to rotate around the second spindle 7 after being brought into contact with the first rotation lever 6 which rotates around the first spindle 5, and to push the operation pedal 2 to a direction where it is made to leave the bracket 3.

Description

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

  Conventionally, there has been known a structure in which an operation pedal is detached from a dash panel for the purpose of alleviating the impact force applied to a driver's lower limb when the vehicle collides with an obstacle from the front side (front collision) (for example, Patent Documents). 1).

  The thing of patent document 1 is provided with the bracket which supports the brake pedal as an operation pedal so that rocking is possible via a spindle, and the rotation lever attached to the bracket so that rotation is possible. The bracket is attached to the dash panel. Further, a vehicle body side member different from the bracket is provided at the vehicle rear side of the rotation lever.

  At the time of a frontal collision of the vehicle, the entire bracket moves to the rear of the vehicle due to the retreat of the dash panel, and accordingly, the turning lever also moves to the rear and contacts the vehicle body side member. The rotating lever that receives the force from the vehicle body side member rotates to push the support shaft of the brake pedal, and the brake pedal is detached from the bracket. As a result, the impact force applied to the lower limbs when the driver makes a forward collision while stepping on the brake pedal can be alleviated.

JP 2007-308087 A

  By the way, the brake pedal must not be detached from the bracket during normal braking operation, so it is necessary to ensure a large stroke of the turning lever for releasing the brake pedal to prevent inadvertent separation. There is.

  In addition, there is a vehicle whose body deformation is small at the time of a front collision. In such a vehicle, the dash panel retraction amount decreases, so that the rotation amount of the rotation lever decreases, and a stroke amount sufficient to disengage the brake pedal may not be obtained.

  On the other hand, it is conceivable to reduce the lever ratio of the rotating lever to ensure a sufficient stroke amount for releasing the brake pedal. However, the lever ratio of the rotating lever is determined by the positional relationship between the fulcrum, the force point, and the action point. As in Patent Document 1, the degree of freedom of setting the position is low with only one rotating lever, It is difficult to obtain a desired lever ratio. In addition, it is difficult to secure a sufficient space around the pedals of the vehicle, which is a great obstacle in setting the lever ratio of the rotating lever.

  The present invention has been made in view of such a point, and the object of the present invention is to restrict layout in the case where the operation pedal is detached from the bracket by the turning operation of the turning lever at the time of front collision of the vehicle. In some cases, the lever ratio can be set freely to obtain a small lever ratio, which is sufficient to disengage the brake pedal even when the amount of deformation of the vehicle body at the time of the front collision is small. The purpose is to ensure the stroke amount.

  In order to achieve the above object, in the present invention, a first rotation lever that rotates in contact with the vehicle body side member and a second rotation lever that rotates in contact with the first rotation lever are provided. The operation pedal was dropped by the turning movement of the turning lever.

  According to a first aspect of the present invention, there is provided a support structure for an operation pedal provided on the rear side of the dash panel. The operation pedal is attached to the dash panel and extends from the dash panel to the rear side of the vehicle. And a vehicle body side member provided at a rear side of the dash panel away from the bracket and a first support shaft extending in the vehicle width direction and supported by the bracket so as to be rotatable. The first pivot lever that rotates around the first support shaft in contact with the vehicle body side member at the time of a collision and the second support shaft that extends in the vehicle width direction are rotatably supported by the bracket. A second rotation lever that contacts the first rotation lever that rotates about one support shaft, rotates about the second support shaft, and pushes the operation pedal away from the bracket; It is characterized in.

  According to this configuration, when the dash panel is retracted at the time of a frontal collision of the vehicle, the first rotation lever comes into contact with the vehicle body side member and starts to rotate around the first support shaft. The rotating first rotating lever contacts the second rotating lever, and the second rotating lever receives a force from the first rotating lever and rotates around the second support shaft. The second rotating lever pushes the operation pedal in a direction to release it from the bracket, and thereby the operation pedal is released from the bracket.

  Therefore, since the first and second rotating levers are provided, the fulcrum, the power point, and the action point are increased as compared with the case where there is only one rotating lever, and the lever as a whole is limited in layout. The degree of freedom in setting the position of each point so that the ratio becomes small is improved.

  According to a second invention, in the first invention, the second rotating lever is provided with a receiving portion for receiving the first rotating lever.

  According to this configuration, the rotating first rotating lever can be received by the receiving portion of the second rotating lever. Thereby, the rotational force of the 1st rotation lever is transmitted reliably to the 2nd rotation lever.

  In a third aspect based on the second aspect, the second rotation lever is provided with a disengagement prevention portion for preventing the first rotation lever received by the receiving portion from coming off from the receiving portion. It is characterized by this.

  According to this configuration, the first rotating lever cannot be detached from the receiving portion of the second rotating lever in a situation where the impact force at the time of the front collision is applied. Accordingly, the second rotation lever can be reliably rotated by the rotation of the first rotation lever.

  According to a fourth aspect, in the third aspect, the disengagement prevention portion is provided on each of both axial sides of the first support shaft of the first rotation lever.

  According to this configuration, the first rotation lever received by the receiving portion of the second rotation lever cannot be detached from both sides in the axial direction. The rotation operation of the second rotation lever is further ensured.

  According to the first aspect of the present invention, the first rotation lever that rotates in contact with the vehicle body side member at the time of a frontal collision of the vehicle and the second rotation lever that rotates in contact with the first rotation lever are provided. The operation pedal is detached from the bracket by the rotation of the two-turn lever. Therefore, the overall lever ratio can be reduced while there are restrictions on the layout, compared to the case where there is only one rotating lever as in the conventional example, so that the deformation of the vehicle body at the time of the front collision is small. In addition, it is possible to secure a sufficient stroke amount required to drop the brake pedal.

  According to the second invention, since the receiving portion for receiving the first rotation lever is provided on the second rotation lever, the rotational force of the first rotation lever is reliably transmitted to the second rotation lever. The turning lever can be turned. Thereby, the operation pedal can be reliably detached from the bracket.

  According to the third aspect of the present invention, since the second rotation lever is provided with the disengagement prevention portion for preventing the first rotation lever from being detached from the receiving portion, the impact force at the time of the front collision acts. The second rotation lever can be reliably rotated.

  According to the fourth invention, since the disengagement prevention portions are provided on both sides in the axial direction of the first support shaft in the first rotation lever, the second rotation lever can be rotated more reliably, The operation pedal can be reliably detached from the bracket.

It is a side view of a brake pedal support structure. It is a disassembled perspective view of a brake pedal support structure. It is a side view which shows the state which the 1st rotation lever contacted the instrument panel reinforcement member in the front collision initial stage. FIG. 4 is a view corresponding to FIG. 3 illustrating a state in which the second rotation lever starts to rotate. FIG. 4 is a view corresponding to FIG. 3 showing a state where the brake pedal is detached from the bracket. FIG. 3 is a diagram corresponding to FIG. 2 according to the second embodiment. (A) is an enlarged perspective view of the second rotating lever on the left side, and (b) is an enlarged perspective view of the second rotating lever on the right side. It is the VIII-VIII sectional view taken on the line in Fig.7 (a).

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

(Embodiment 1)
FIG. 1 is a side view of a support structure for an operation pedal according to a first embodiment of the present invention. The operation pedal support structure 1 is provided, for example, on the driver's seat side in the passenger compartment of a passenger car or a freight transport vehicle, and when the vehicle collides with an obstacle from the front side (at the time of a front collision), This is to relieve the impact force applied to the lower limbs.

  In the description of the embodiment, the front side of the vehicle is simply referred to as “front”, the rear side of the vehicle is simply referred to as “rear”, the left side in the vehicle width direction is simply referred to as “left”, and the right side in the vehicle width direction is simply “right”. Let's say.

  First, the structure of the vehicle will be described. The vehicle includes a dash panel P that divides a passenger compartment A and a portion B ahead of the passenger compartment A. For example, an engine or the like is mounted in a portion B in front of the passenger compartment A. The dash panel P is made of a steel plate extending in the vertical direction. A floor panel (not shown) constituting the floor of the passenger compartment A is connected to the lower edge of the dash panel P.

  Next, the operation pedal support structure 1 will be described. As shown in FIGS. 1 and 2, the operation pedal support structure 1 includes a brake pedal 2 as an operation pedal operated by a driver, a bracket 3 that supports the brake pedal 2 so as to be swingable in the vehicle front-rear direction, An instrument panel reinforcing member 4 as a vehicle body side member, a first rotation lever 6 rotatably supported on the bracket 3 via a first support shaft 5, and a second support shaft 7 on the bracket 3 A pair of left and right second rotation levers 8 and 9 supported rotatably are provided, and a lock pin 10 for locking the second rotation levers 8 and 9 in a normal state. Note that the normal time is a normal driving time until the vehicle collides forward.

  The bracket 3 is attached to the dash panel P and has a shape extending rearward from the dash panel P. The bracket 3 includes a left plate 11, a right plate 12, a rear plate 13 that connects the rear portions of the left plate 11 and the right plate 12, and a front plate 14 that connects the front portions of the left plate 11 and the right plate 12. It has.

  The left plate 11 includes a main body portion 11a extending substantially vertically in the vertical direction, and a flange portion 11b extending to the left from the front edge portion of the main body portion 11a. The main body portion 11a and the flange portion 11b are formed of a steel plate. Are integrally formed by pressing. A first insertion hole 11c through which the first support shaft 5 is inserted is formed on the upper rear side of the main body 11a. The outer peripheral surface of the first support shaft 5 is supported by the inner peripheral surface of the first insertion hole 11c. A second insertion hole 11d through which the second support shaft 7 is inserted is formed on the lower rear side of the main body portion 11a. The outer peripheral surface of the second spindle 7 is supported by the inner peripheral surface of the second insertion hole 11d.

  A lock pin insertion hole 11e through which the lock pin 10 is inserted is formed on the upper front side of the main body 11a. The lock pin insertion hole 11e is a substantially oval shape that is long in the front-rear direction. As shown in FIG. 1, the front side portion of the lock pin insertion hole 11e is expanded upward as compared with the rear side portion. The inner diameter of the rear portion of the lock pin insertion hole 11 e is set slightly larger than the outer diameter of the lock pin 10. Therefore, the lock pin 10 is movable in the front-rear direction from the rear edge portion to the front edge portion of the lock pin insertion hole 11e in a state of being inserted through the lock pin insertion hole 11e. Moreover, when the lock pin 10 is located in the front side part of the lock pin insertion hole 11e, it can move also to an up-down direction.

  A cutout portion 11h for detachably attaching the brake pedal 2 is formed at the lower edge portion of the main body portion 11a at the front side of the second insertion hole 11d and the rear side of the lock pin insertion hole 11e. . The notch 11h has a substantially U shape that opens downward. The width of the notch 11h is set to be slightly wider than the shaft diameter of the bolt 20 for fixing the pedal body 21 of the brake pedal 2, and the shaft of the bolt 20 is inserted into the notch 11h. ing.

  Bolt insertion holes 11k and 11k through which bolts (not shown) for fastening to the dash panel P are inserted are formed in the flange portion 11b.

  The right plate 12 has the same structure as the left plate 11, and the left plate 11 and the right plate 12 have a symmetrical shape to the left and right. Accordingly, the right plate 12 also has a first insertion hole 12c, a second insertion hole (not shown), a lock pin insertion hole (not shown), and a notch (not shown).

  The rear plate 13 is fixed to the rear portion of the left plate 11 and the rear portion of the right plate 12 and extends downward from the left plate 11. The front plate 14 is formed by pressing a steel plate in the same manner as the left plate 11 and the like.

  An attachment hole 13a to which a brake switch (not shown) is attached is formed in the lower portion of the front plate 14.

  The front plate 14 is fixed to the lower portion of the left plate 11 and the lower portion of the right plate 12 and extends downward from the left plate 11. The front plate 14 is formed by pressing a steel plate in the same manner as the left plate 11 and the like.

  The rear plate 13 is formed with a rod insertion hole 14a through which a rod D (shown in FIG. 1) extending from a brake master cylinder (not shown) provided in front of the dash panel P is inserted. The rod D passes through the dash panel P and extends to the vehicle compartment A, and the tip of the rod D is connected to the brake pedal 2.

  As shown in FIG. 1, the instrument panel reinforcing member 4 is a high-strength member made of a steel pipe extending in the left-right direction. The left end portion of the instrument panel reinforcing member 4 is fixed to the left front pillar (not shown) of the vehicle body, and the right end portion is fixed to the right front pillar (not shown) of the vehicle body. The instrument panel reinforcing member 4 is disposed above the bracket 3 and away from the rear.

  The instrument panel reinforcing member 4 is provided with a protruding member 4a protruding forward at a portion corresponding to the position where the brake pedal 2 is disposed. A contact surface 4b extending substantially in the vertical direction is provided at the front end of the protruding member 4a. Although details will be described later, the upper surface of the first rotation lever 6 comes into contact with the contact surface 4b at the time of a front collision.

  As shown in FIG. 2, the 1st rotation lever 6 is arrange | positioned between the left board 11 and the right board 12 of the bracket 3, and is an integrally molded article formed by pressing a steel plate. The first rotation lever 6 includes a left side plate portion 6a extending substantially vertically along the left plate 11, a right side plate portion 6b extending substantially vertically along the right plate 12, a left side plate portion 6a and a right side plate portion. And a connecting plate portion 6c extending in the left-right direction so as to connect 6b.

  The left side plate portion 6a has a substantially triangular shape in a side view, and is formed so that its bottom side extends in a substantially horizontal posture. A connecting plate portion 6c is connected to the front edge portion of the left side plate portion 6a.

  A left insertion hole 6d through which the first support shaft 5 is inserted is formed in the vicinity of the apex on the lower rear side of the left side plate portion 6a. A left connecting pin 30 for connecting the first rotating lever 6 and the second rotating lever 8 on the left side is inserted into a part of the lower part of the left side plate portion 6a that is farther forward than the left insertion hole 6d. A connecting pin insertion hole 6e is formed. The connecting pin insertion hole 6e has a smaller diameter than the left insertion hole 6d. The left connecting pin 30 is a member constituting a part of the operation pedal support structure 1.

  A notch 6f into which the lock pin 10 is inserted is formed in the vicinity of the apex on the lower front side of the left side plate 6a. The notch 6f has a substantially U shape that opens forward. The upper edge portion 6g of the cutout portion 6f is formed so as to be positioned higher toward the front side (the open side of the cutout portion 6f) (see FIGS. 3 and 4). Therefore, the width of the notch 6f becomes wider toward the front side. The width of the notch 6f is set to be slightly wider than the outer diameter of the lock pin 10 at the narrowest rear end.

  A protruding portion 6j that protrudes obliquely upward toward the rear side is formed on the upper portion of the left side plate portion 6a. As shown in FIG. 1, this protrusion 6j and the contact surface 4b of the instrument panel reinforcing member 4 are opposed to each other in the front-rear direction.

  The right side plate portion 6b has the same structure as the left side plate portion 6a. Accordingly, the right side plate portion 6b also includes a right insertion hole 6h through which the first support shaft 5 is inserted, a connection pin insertion hole 6i through which the right connection pin 31 is inserted, a notch portion (not shown) into which the lock pin 10 is inserted, and a protrusion. Part 6k.

  The second rotating lever 8 on the left side is composed of a plate member formed so as to extend along the left plate 11 of the bracket 3. The second turning lever 8 is also an integrally formed product formed by pressing a steel plate.

  A bolt insertion hole 8 a through which the bolt 20 is inserted is formed in the vicinity of the central portion of the second rotation lever 8 in the front-rear direction. On the lower edge portion of the second rotation lever 8, a ridge portion 8b that is bent so as to protrude to the left side and extends in the front-rear direction is formed at a portion corresponding to a position directly below the bolt insertion hole 8a.

  The left second rotation lever 8 is provided with a receiving portion 8c that receives the lower edge portion of the first rotation lever 6 from below. The receiving portion 8c is formed at a portion corresponding to the upper portion of the second rotating lever 8 directly above the bolt insertion hole 8a, and is bent to the right and extends in the front-rear direction. The lower edge portion of the front side of the left side plate portion 6a of the first rotation lever 6 is in contact with the upper surface of the receiving portion 8c.

  The rear side of the bolt insertion hole 8a of the second rotation lever 8 extends upward, and a connection pin insertion hole 8d through which the left connection pin 30 is inserted is formed above the extension 8n. . The connection pin insertion hole 8d and the connection pin insertion hole 6e of the first rotation lever 6 coincide with each other.

  The front side of the bolt insertion hole 8a of the second rotation lever 8 also extends upward, and a front notch 8e into which the lock pin 10 is inserted is formed at the top of the extension 8m. The front notch 8e has a substantially U shape that opens forward. The width of the front notch 8e is set slightly wider than the outer diameter of the lock pin 10. The front cutout portion 8e and the cutout portion 6f of the first rotation lever 6 coincide with each other.

  A rear notch 8 f that opens downward is formed on the rear side of the lower portion of the second rotation lever 8. The rear notch 8f has a semicircular arc shape that is shallower than the front notch 8e.

  The second rotating lever 9 on the right side is configured in the same manner as the second rotating lever 8 on the left side, and includes a bolt insertion hole 9a, a ridge portion 9b, a receiving portion 9c, and a connection pin insertion hole for inserting the right connection pin 31. 9d, a front notch 9e, a rear notch 9f, a front extension 9m, and a rear extension 9n. The right connection pin 31 is also a member constituting a part of the operation pedal support structure 1.

  The brake pedal 2 includes a pedal body 21 that extends in the vertical direction, bushes 22 and 22, and a sleeve 23. A through hole 21 a that penetrates in the left-right direction is formed in the upper end portion of the pedal body 21. Bushings 22 are inserted coaxially into the through hole 21a. A sleeve 23 is coaxially inserted into the bushes 22 and 22. Bolts 20 are inserted into the sleeve 23. A nut 24 is screwed onto the bolt 20.

  An operation portion 21b for operating the brake switch is provided in the middle portion of the pedal body 21 in the vertical direction. The bolt 20 and the nut 24 are members that constitute a part of the brake pedal 2.

  The assembly procedure of the operation pedal support structure 1 will be described.

  First, the first rotating lever 6 and the left and right second rotating levers 8 and 9 are connected by the left and right connecting pins 30 and 31. That is, the left connection pin 30 is inserted into the connection pin insertion hole 6 e of the first rotation lever 6 and is also inserted into the connection pin insertion hole 8 d of the second rotation lever 8. Further, the right connection pin 31 is inserted into the connection pin insertion hole 6 i of the first rotation lever 6 and is also inserted into the connection pin insertion hole 9 d of the second rotation lever 9. The connection pins 30 and 31 are only used to integrate the first rotation lever 6 and the left and right second rotation levers 8 and 9 in a normal state. When the shearing force acts on the connecting pins 30 and 31 by moving, the connecting pins 30 and 31 are configured so as to be cut.

  The first rotation lever 6 and the left and right second rotation levers 8 and 9 are inserted between the left plate 11 and the right plate 12 of the bracket 3, and the first support shaft 5 is inserted into the first insertion hole 11 c of the bracket 3. The left insertion hole 6d, the right insertion hole 6h, and the first insertion hole 12c of the bracket 3 are inserted through the first rotation lever 6. As a result, the first rotation lever 6 is supported by the bracket 3 so as to be rotatable around the first support shaft 5.

  Further, the second support shaft 7 is inserted through the second insertion hole 11 d of the bracket 3. In this state, the second support shaft 7 is inserted into the rear cutout portion 8f of the left second rotation lever 8, and the second support shaft is inserted into the rear cutout portion 9f of the right second rotation lever 9. 7 is inserted. As a result, the second rotation lever 8 is supported by the bracket 3 in a state in which the second rotation lever 8 can rotate about the second support shaft 7.

  Further, the lock pin 10 is inserted into the left and right lock pin insertion holes 11 e (only the left one is shown) of the bracket 3. At this time, the lock pin 10 is inserted into the left and right cutouts 6f (only the left one is shown) of the first rotation lever 6 and into the front cutouts 8e and 9e of the second rotation levers 8 and 9. Then, the lock pin 10 is disposed behind the lock pin insertion hole 11 e of the bracket 3. As a result, the front sides of the first rotation lever 6 and the left and right second rotation levers 8 and 9 are both supported by the lock pin 10 and are prevented from rotating in the vertical direction.

  Further, the brake pedal 2 is attached to the bracket 3. That is, the bushes 22 and 22 are inserted into the through holes 21 a of the pedal body 21, and the sleeve 23 is inserted into the bushes 22 and 22. Then, the upper part of the pedal body 21 is inserted between the left plate 11 and the right plate 12 of the bracket 3. Thereafter, the bolt 20 is cut from the left side of the bracket 3 to the notch 11h, the bolt insertion hole 8a of the left second rotation lever 8, the sleeve 23, the bolt insertion hole 9a of the right second rotation lever 9, and the right side of the bracket 3. Insert through the notch (not shown). The brake pedal 2 is attached to the bracket 3 by screwing a nut 24 to the bolt 20 from the right side of the bracket 3.

  The bracket 3 to which each member is assembled as described above is attached to the dash panel P. In the attached state shown in FIG. 1, the protrusions 6 j and 6 k of the first rotation lever 6 face the contact surface 4 b of the instrument panel reinforcing member 4.

  Next, the operation of the operation pedal support structure 1 configured as described above will be described. First, the brake operation in the normal state will be described. In the normal state, even if the brake pedal 2 is depressed, the brake pedal 2 only rotates around the sleeve 23. The first rotation lever 6, the second rotation lever 8, No force acts on 9 and these do not rotate.

  Next, the front collision will be described. When the vehicle collides forward, the dash panel P moves backward due to deformation of the vehicle body, and the bracket 3 moves backward accordingly. On the other hand, since the instrument panel reinforcing member 4 is fixed to a pillar different from the dash panel P, it hardly retreats.

  As shown in FIG. 3, when the bracket 3 is retracted, the protrusions 6j and 6k of the first rotation lever 6 abut against the abutment surface 4b of the instrument panel reinforcing member 4 and are pushed forward by the abutment surface 4b. .

  When the protrusions 6 j and 6 k of the first rotation lever 6 are pushed forward, the first rotation lever 6 tries to rotate around the first support shaft 5. At this time, since the second rotating levers 8 and 9 are fixed to the bracket 3 together with the pedal 2, a shearing force acts on the left and right connecting pins 30 and 31. The left and right connecting pins 30 and 31 that have received the shearing force are cut.

  At the same time, the first rotation lever 6 starts to rotate forward around the first support shaft 5, and the upper edge 6 g of the notch 6 f hits the lock pin 10. Since the upper edge 6g of the notch 6f extends obliquely upward toward the front, a force acts on the lock pin 10 toward the front. As a result, the lock pin 10 moves to the front part of the lock pin insertion hole 11e. When the lock pin 10 moves to the front side, the lock pin 10 comes out of the notch 6f of the first turning lever 6 and comes out of the rear notches 8e and 9e of the second turning levers 8 and 9. As a result, there is no thing that prevents the first rotation lever 6 and the second rotation levers 8 and 9 from rotating.

  The first rotating lever 10 receives the receiving portions of the second rotating levers 8 and 9 while rotating around the first support shaft 5 so that the front side thereof moves downward (counterclockwise in FIG. 3). It touches 8c and 9c. The rotational force of the first rotation lever 10 acts on the second rotation levers 8 and 9.

  As shown in FIG. 4, the second turning levers 8 and 9 that have received the turning force of the first turning lever 10 turn around the second support shaft 7 so that the front side thereof moves downward. The rotational force is transmitted to the brake pedal 2 through the shaft of the bolt 20 and the brake pedal 2 is pushed downward.

  Then, as shown in FIG. 5, the bolt 20 moves downward in the notch 11 h of the bracket 3 and falls downward from the notch 11 h, whereby the brake pedal 2 is detached from the bracket 3.

  The release of the brake pedal 2 allows the brake pedal 2 to move greatly forward, thereby reducing the impact force applied to the driver's lower limbs.

  As described above, according to the operation pedal support structure 1 according to the first embodiment, since the first and second rotating levers 6, 8, and 9 are provided, there is one conventional rotating lever. Compared with the case of only the above, the fulcrum, the force point, and the action point are increased, and the degree of freedom in setting the position of each point is improved so that the lever ratio as a whole is reduced in a layout restriction.

  Thereby, even when the deformation of the vehicle body at the time of the front collision is small, it is possible to secure a sufficient stroke amount for releasing the brake pedal 2.

  Further, when the first rotation lever 6 is rotated, the first rotation lever 6 can be received by the receiving portions 8 c and 9 c of the second rotation levers 8 and 9. As a result, the rotational force of the first rotation lever 6 can be reliably transmitted to the second rotation levers 8 and 9, so that the brake pedal 2 can be reliably detached from the bracket 3.

(Embodiment 2)
FIGS. 6-9 shows the support structure 1 of the operating pedal concerning Embodiment 2 of this invention. The second embodiment is different from the first embodiment only in the structure of the second turning levers 8 and 9, and the other parts are the same as those of the first embodiment. Different parts will be described in detail.

  As shown in FIG. 7, a flange 8 j is provided on the receiving portion 8 c of the second rotating lever 8 on the left side of the second embodiment. As shown in FIG. 8, the flange 8j is formed to extend upward from the right edge of the receiving portion 8c. The flange 8j is for preventing the left side plate portion 6a of the first rotating lever 6 received by the receiving portion 8c from coming off to the right side from the receiving portion 8c, and corresponds to a detachment preventing portion of the present invention.

  As shown in FIGS. 7 and 8, a bulging portion 8k that bulges to the left is formed at the center in the front-rear direction of the second rotating lever 8 on the left. The bulging portion 8k is formed from the lower portion to the upper portion of the second rotating lever 8. By forming the bulging portion 8k, the rigidity of the second rotating lever 8 is increased.

  The bolt insertion hole 8a is formed in the bulging portion 8k. Further, the bulging portion 8 k is in contact with the inner surface of the left plate 11 of the bracket 3.

  As shown in FIG. 8, in a state where the left plate portion 6a of the first rotation lever 6 is received by the receiving portion 8c of the second rotation lever 8, the flange 8j is located on the right side of the left plate portion 6a and on the left side. The extending portions 8m and 8n (only the front extending portion 8m is shown in FIG. 8) are positioned. This prevents the left side plate portion 6a from coming off in both the left and right directions (both sides in the axial direction).

  Similarly to the left side, the second rotating lever 9 on the right side is also provided with a flange 9j, a bulging portion 9k, and front and rear side extending portions 8m and 8n.

  Therefore, according to the operation pedal support structure 1 according to the second embodiment, as in the first embodiment, the first and second rotating levers 6, 8, and 9 are provided. Even when the deformation is small, it is possible to ensure a sufficient stroke amount to disengage the brake pedal 2.

  In addition, since the flanges 8j and 9j and the extending portions 8m, 8n, 9m, and 9n are provided on the second rotating levers 8 and 9, even if the impact force at the time of the front collision is applied, The moving lever 6 cannot be detached from the receiving portions 8c, 9c of the second rotating levers 8, 9. Accordingly, the second rotation levers 8 and 9 can be reliably rotated by the rotation of the first rotation lever 6.

  In the first and second embodiments, the case where the present invention is applied to the support structure for the brake pedal 2 has been described.

  In the first and second embodiments, the first rotating lever 6 is applied to the instrument panel reinforcing member 4, but the first rotating lever 6 is applied to a vehicle body side member other than the instrument panel reinforcing member 4. You may do it.

  As described above, the operation pedal support structure according to the present invention can be applied, for example, to support a brake pedal of a vehicle.

1 Operation pedal support structure 2 Brake pedal (operation pedal)
3 Bracket 4 Instrument panel reinforcement member (vehicle body side member)
5 First support shaft 6 First rotation lever 7 Second support shafts 8 and 9 Second rotation levers 8c and 9c Receiving portions 8j and 9j Flange (detachment prevention portion)
8m, 9m extension part (detachment prevention part)
10 Lock pins 30, 31 Connecting pins

Claims (4)

In the operation pedal support structure provided at the rear of the dash panel vehicle,
A bracket attached to the dash panel and extending rearward from the dash panel to support the operation pedal so as to be swingable in the vehicle front-rear direction;
A vehicle body side member provided on the rear side of the dash panel away from the bracket; and
A first rotation lever supported by the bracket via a first support shaft extending in the vehicle width direction so as to be rotatable, and rotating around the first support shaft in contact with the vehicle body side member at the time of a frontal collision of the vehicle; ,
The bracket is rotatably supported via a second support shaft extending in the vehicle width direction, and is rotated around the second support shaft in contact with the first rotation lever that rotates about the first support shaft. And a second turning lever that pushes the operation pedal in a direction to release the operation pedal from the bracket. The operation pedal support structure according to claim 1,
A support structure for an operation pedal, wherein the second rotation lever is provided with a receiving portion for receiving the first rotation lever. The operation pedal support structure according to claim 2,
A structure for supporting an operating pedal, wherein the second rotating lever is provided with a disengagement preventing portion for preventing the first rotating lever received by the receiving portion from being detached from the receiving portion. The operation pedal support structure according to claim 3,
A support structure for an operation pedal, wherein the disengagement prevention portions are provided on both sides in the axial direction of the first support shaft of the first rotation lever.

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