JP4764704B2 - Operation pedal support structure - Google Patents

Description

  The present invention relates to a support structure for an operation pedal that is pivotally supported by a dash panel and is operated to swing in the front-rear direction of a vehicle.

  Conventionally, as shown in Patent Document 1 below, a support for an operation pedal having a pedal bracket attached to a dash panel and a pedal body that is swingably supported via a support shaft supported by the pedal bracket In the structure, there is provided a rotation lever that drives the support shaft by rotating and contacting the vehicle body side member at the time of a vehicle collision, and the support shaft is arranged in the rear of the vehicle along a guide groove formed in the pedal bracket. The upper part of the pedal body is displaced toward the rear side of the vehicle with the installation part of the push rod that drives the brake booster as a fulcrum, and the pedal depression provided on the lower end part of the pedal body corresponding to this The part is displaced to the front side of the vehicle.

  Further, in Patent Document 2 below, when a vehicle collides, a rotating shaft that is a swing fulcrum of the pedal body is displaced relative to the pedal stepping portion provided at the lower end portion of the pedal body toward the rear side of the vehicle. The vehicle pedal support structure is configured to include an initial position holding mechanism that holds the rotating shaft at an initial position, and an urging unit that urges the rotating shaft toward the rear side of the vehicle. The position holding mechanism is provided with a rotating link that holds the rotating shaft and a fixed shaft that rotatably supports the rotating link at a position separated from the rotating shaft, and the rotating shaft is maintained at the initial position by the biasing means. By energizing the rotary link so that the rotary shaft is displaced from the initial position to the rear side of the vehicle in the event of a vehicle collision, the pedal depression portion is moved forward of the vehicle. Move to the side Configuration so as to have been disclosed.

Furthermore, as shown in the following Patent Document 3, the pedal bracket that supports the pedal body of the operation pedal so as to be swingable is expanded and deformed in accordance with an impact load that acts when the vehicle collides, and correspondingly, By disengaging the support shaft, which is the pivot point of the pedal body, from the pedal bracket, the pedal stepping part provided at the lower end of the pedal body moves to the rear side of the vehicle even when the dash panel is retracted in the event of a vehicle collision To prevent it from happening.
International Publication No. 03/45750 Pamphlet Japanese Patent No. 3269372 European Patent Application No. 0659615

  In the operation pedal support structure disclosed in Patent Documents 1 and 2, when the vehicle collides, the rotating shaft serving as the swing fulcrum provided at the upper end portion of the pedal body is moved to the rear side of the vehicle. Correspondingly, since the pedal stepping portion provided at the lower end of the pedal body is configured to move to the front side of the vehicle, the load input to the feet of the driver placed on the pedal stepping portion, that is, the vehicle It is possible to reduce the load acting on the foot according to the inertial force that tries to move the driver forward in the event of a collision.

  However, in the support structure of the operation pedal disclosed in Patent Document 1, the support shaft of the pedal body is supported by the arm portion provided in the rotating lever at the normal time and locked to the upper end portion of the guide groove. Therefore, rattling of the rotation lever corresponding to the external force acting on the pedal body causes the support state of the pedal body to become unstable and impair the operation feeling. When a large external force is applied, there is a problem that the locked state by the arm portion is released and the pedal body may drop from the locking portion. Moreover, the shape of the guide groove that guides the support shaft of the pedal body to the rear side of the vehicle when the vehicle collides is formed so as to approach the swing fulcrum of the rotating lever toward the rear side of the vehicle. (See FIG. 1 of the same document), as the support shaft of the pedal body moves to the rear side of the vehicle, the moving speed becomes slower, and the pedal stepping portion can be moved quickly to the front side of the vehicle. There is a problem that you can not.

  Further, as disclosed in the above-mentioned Patent Document 2, when it is configured to hold the rotating shaft of the pedal body in the upper initial position according to the urging force of the urging means at normal time, the urging means If the urging force is not set extremely strong, the rotating shaft cannot be stably held, and the support position of the rotating shaft is likely to fluctuate according to the expansion and contraction of the urging means. There is a problem that it is difficult to maintain the operational feeling in a good state. In addition to the rotating link that holds the rotating shaft, an urging means that urges the rotating link is provided to move the pedal stepping portion forward of the vehicle in the event of a vehicle collision. The support structure has a problem that the structure is complicated and the manufacturing cost is unavoidable.

  As disclosed in Patent Document 3, the pedal bracket is expanded and deformed in response to an impact load that acts during a vehicle collision, so that the support shaft serving as the pivot point of the pedal body is removed from the pedal bracket. When configured to be detached, the support shaft is stably supported by the pedal bracket as long as the pedal bracket is not expanded and deformed at normal times, so that the operational feeling of the pedal body can be maintained in a good state. is there. However, in the above configuration, there is no means for forcibly displacing the upper part of the pedal body to the rear side of the vehicle at the time of a vehicle collision as in Patent Documents 1 and 2 described above. There is a possibility that it cannot be reliably reduced. In particular, when the pedal body is expanded and deformed in response to an impact load that is applied when the vehicle collides, the pedal body is inclined due to an oblique load acting on the pedal body supported by the pedal bracket. The pedal body is likely to be caught by the pedal bracket. When such a situation occurs, the restraint state of the pedal body by the pedal bracket is maintained, and a predetermined load acts on the driver's feet. .

  The present invention has been made in view of the above-described problems, and can maintain the operational feeling of the pedal body in a normal state during normal times, and can quickly move the pedal stepping portion to the front side of the vehicle in the event of a vehicle collision. An object of the present invention is to provide a support structure for an operation pedal capable of effectively reducing a load acting on a driver's foot.

In order to solve the above-mentioned problems, a first aspect of the present invention is a support structure for an operation pedal that is pivotally supported by a dash panel and swings in the front-rear direction of the vehicle, and is attached to the dash panel. A pedal bracket that extends rearward of the vehicle, a pedal body that is swingably supported via a first support shaft that is installed in the pedal bracket and extends in the vehicle width direction, and a vehicle that is installed in the pedal bracket. A pivot lever that is pivotably supported via a second support shaft extending in the width direction, and that pivots and displaces about the second support shaft by interfering with a vehicle body side member when the vehicle collides. The turning lever includes a release pushing portion for releasing the support state of the first spindle by the pedal bracket by pushing the first spindle along with the turning displacement at the time of the vehicle collision. ,the above A moving pusher that pushes the upper portion of the first support shaft or the pedal body released from the holding state to move the first support shaft to the rear side of the vehicle, and the second support shaft. Is set to a value larger than the distance from the second support shaft to the release pushing portion , and the support state is released on the side wall of the pedal bracket. A guide groove curved downward is provided to guide the first support shaft to the rear side of the vehicle, and the guide groove has a larger separation distance from the second support shaft toward the rear side of the vehicle. The rotary lever is configured to slide and displace the first support shaft that moves along the guide groove in a direction away from the second support shaft while being pushed by the moving push portion. is characterized in that is moved to the rear side of the vehicle while

  According to the first aspect of the present invention, in a normal running state, the pedal body is supported by the pedal bracket attached to the dash panel via the first support shaft extending in the vehicle width direction, so that the pedal can be configured with a simple configuration. A stable support state of the main body can be obtained, and the operational feeling when the pedal main body is swung can be maintained in a good state. When the vehicle collides, the rotating lever supported by the pedal bracket via the second support shaft is rotated and displaced by interfering with the vehicle body side member. By releasing the support state of the first support shaft and moving the first support shaft to the rear side of the vehicle, the upper portion of the pedal body is set to the rear side of the vehicle with the installation portion of the push rod for driving the brake booster as a fulcrum. In response to this, the pedal depressing part provided at the lower end of the pedal body can be moved to the front side of the vehicle. Can be easily and effectively reduced.

  In particular, in the first aspect of the present invention, the release lever that releases the supporting state by pushing the first supporting shaft to the rotating lever, and the first supporting shaft released from the supporting state. Alternatively, there is provided a moving pusher that moves the first support shaft to the rear side of the vehicle by pushing the upper part of the pedal body, and the distance from the second support shaft to the moving pusher is set as described above. Since the value is set larger than the distance from the second support shaft to the release pushing portion, the support state of the first support shaft can be easily released, and the first support shaft released from the support state can be removed. There is an advantage that it is possible to effectively reduce the load acting on the driver's feet by largely moving to the rear side of the vehicle. That is, when releasing the support state of the first support shaft, the first support shaft is pushed by a release pushing portion installed at a distance close to the second support shaft, which is the swing support point of the rotating lever. Thus, the supporting state can be easily released by pushing the first support shaft with a large driving force. Then, after the support state of the first support shaft is released, the first support shaft can be moved to the rear side of the vehicle without applying such a large driving force. The first support shaft or the upper portion of the pedal body is pushed by a moving pusher installed at a distance far from the center, thereby changing the lever ratio of the rotating lever and moving the first support shaft in a short time. It becomes possible to move largely to the rear side of the vehicle. For this reason, the pedal depression part provided in the lower end part of the said pedal main body can be largely moved to the front side of a vehicle for a short time, and the load input into a driver | operator's step can be reduced effectively.

In addition, since a guide groove that is curved downwardly to guide the first support shaft released from the support state to the rear side of the vehicle is provided on the side wall of the pedal bracket, the first support shaft can be stabilized with a simple configuration. In this state, the vehicle can be moved to the rear side of the vehicle, and the pedal input portion can be reliably moved to the front side of the vehicle to effectively reduce the load input to the driver's feet.

Further, the guide groove, the more reaches the rear side of the vehicle is formed as the distance from the second support shaft is increased, along the guide groove, the first support shaft, moving pushing portion because you move to the rear side of the vehicle while gradually sliding displacement in a direction away from the second support shaft while pushing the while continuously changing the lever ratio of the pivot lever, said first The support shaft can be moved largely to the rear side of the vehicle in a stable state.

The side wall of the pedal bracket is provided with a guide groove for guiding the first support shaft released from the support state downward, and the support state is released from the pivot lever below the guide groove. A holding slit for holding the detached first support shaft is provided, and the first support shaft is attached to the vehicle by rotating the turning lever while holding the first support shaft in the holding slit. You may make it move to back side ( Claim 2 ).

In this way, without providing the guide means on the pedal bracket side for guiding the first support shaft to the rear side of the vehicle, the first support shaft released from the support state is stabilized in the rear side of the vehicle. Can be moved to.

Further, when a guide groove that is curved in a rearward downward direction for guiding the first support shaft released from the support state to the rear side of the vehicle is provided on the side wall of the pedal bracket, the rotating lever is provided with the first support shaft. The first support shaft is moved to the rear side of the vehicle along the guide groove by pushing the upper portion of the pedal body by the moving pushing portion after a predetermined time has elapsed after releasing the shaft support state. ( Claim 3 ).

  In this way, by pushing the upper part of the pedal body by the moving pusher installed at a distance far from the second support shaft after a predetermined time has passed since the support state of the first support shaft is released. The lever ratio of the rotating lever that drives the first support shaft can be intermittently changed, and the first support shaft can be moved greatly to the rear side of the vehicle accordingly. In addition, since the upper portion of the pedal body located farther from the second support shaft is pushed by the moving pusher, the lever ratio of the turning lever can be changed more greatly, and the first There is an advantage that one spindle can be moved largely to the rear side of the vehicle in a shorter time.

According to a fourth aspect of the present invention, there is provided a support structure for an operating pedal that is pivotally supported by the dash panel and swings in the front-rear direction of the vehicle, and is attached to the dash panel and extends to the rear side of the vehicle. Pedal bracket, pedal body that is swingably supported via a first support shaft installed in the pedal bracket and extending in the vehicle width direction, and a second support shaft installed in the pedal bracket and extending in the vehicle width direction And a pivot lever that pivots and displaces the second support shaft as a fulcrum by interfering with a vehicle body side member at the time of a vehicle collision. by pushing the first support shaft accompanied the rotational displacement of the time, the first support shaft to which the support state is released with releases the support state of the first shaft to the rear side of the vehicle the moved, the Pedarubura On the side wall of Tsu bets, down the curved guide groove is provided after guiding the first support shaft the support state is released to the rear side of the vehicle, the said pedal body, the support state of the first support shaft When the brake is released, a brake booster drive push rod installation portion that becomes a swing fulcrum of the pedal body is provided below the first support shaft installation portion. An interference member that interferes with a vehicle rear side surface of the pedal body when the first support shaft moves rearward is provided between the installation portion of the first support shaft and the installation portion of the push rod. To do.

  According to the seventh aspect of the present invention, in addition to the rotating lever that releases the support state of the first support shaft in the event of a vehicle collision and moves the first support shaft released from the support state to the rear side of the vehicle. Since the interference member that interferes with the vehicle rear side surface of the pedal body when the first support shaft is moved backward is provided between the installation portion of the push rod for driving the brake booster and the installation portion of the first support shaft, The position of the swing fulcrum of the pedal body that swings and displaces in response to the rearward movement of the first support shaft at the time of a collision is changed between the initial stage of the collision (when the support state of the first support shaft is released) and the late stage of the collision. Accordingly, the pedal stepping portion provided at the lower end of the pedal body can be moved greatly to the front side of the vehicle in a short time. That is, in the initial stage of the collision, the upper part (first support shaft) of the pedal body is moved to the rear side of the vehicle with the installation portion of the push rod as a fulcrum. By interfering with the interference member, the position of the swing fulcrum of the pedal body is changed from the push rod installation portion to the interference member installation portion, so that the pedal is pushed by the turning lever and the rear side of the vehicle The swing fulcrum of the pedal body can be brought closer to the first support shaft that moves to the front, and the pedal stepping portion provided at the lower end of the pedal body can be moved greatly to the front side of the vehicle in a short time. It becomes possible.

  As described above, according to the operation pedal support structure of the present invention, the operational feeling of the pedal body can be maintained in a normal state during normal operation, and the pedal stepping portion can be quickly moved to the front side of the vehicle in the event of a vehicle collision. Thus, it is possible to effectively reduce the load acting on the driver's feet.

(Embodiment 1)
FIG. 1 shows a support structure for an operation pedal according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a dash panel that partitions an engine room and a vehicle compartment. The dash panel 1 includes a pedal bracket 3 that supports a pedal body 2 that constitutes an operation pedal such as a brake pedal so as to be swingable. The brake booster 4 is attached, and the pedal bracket 3 is pivotally supported by a pivot lever 5 that drives the swinging fulcrum of the pedal body 2 to the rear side of the vehicle when the vehicle collides. .

  2 to 4, the pedal bracket 3 includes a mounting board 6 that is bolted to the dash panel 1 and a pair of left and right bracket bodies 7 that extend from the left and right ends of the mounting board 6 to the rear side of the vehicle. At the rear end of the bracket body 7, a mounting bracket 8 for a brake sensor (not shown) for detecting that the pedal body 2 has been operated is projected downward.

  The bracket body 7 of the pedal bracket 3 is provided with a pair of left and right side wall plates 9 extending from the left and right side portions of the mounting board 6 to the rear side of the vehicle. A support hole 10 through which the first support shaft 16 serving as a moving fulcrum is inserted, and a guide groove 14 that is connected to the support hole 10 and is curved downward and extending from the lower end of the support hole 10 toward the rear side of the vehicle. Is formed. A support hole 22 is formed on the rear side of the support hole 14 through which the second support shaft 24 serving as a pivot point of the rotation lever 5 is inserted.

  Then, the shaft portion of the first support shaft 16 is inserted into the insertion hole provided in the support hole 10 of the bracket body 7 and the boss portion 21 of the pedal body 2, and a nut is inserted into the distal end portion of the first support shaft 16. 20, the first support shaft 16 is fixed to the pedal bracket 3 in a state where the bolt head 18 of the first support shaft 16 and the nut 20 are pressed against the peripheral edge of the support hole 10. The pedal body 2 is swingably supported by the first support shaft 16 as a fulcrum.

  A pair of front and rear protrusions 12 facing each other are provided at the upper end of the guide groove 14 (the connecting portion between the support hole 10 and the guide groove 14). One spindle 16 is supported from below and is configured to restrict its downward movement. Further, when the vehicle collides, the protrusion 12 is deformed in accordance with the rotational displacement of the rotation lever 5 as will be described later, whereby the support state of the first support shaft 16 is released and the support state The released first support shaft 16 is allowed to move to the rear side of the vehicle along the guide groove 14.

  The rotating lever 5 includes a pair of left and right side wall plates 32 in which an insertion hole 33 through which the second support shaft 24 is inserted is formed at a lower end portion, and a top plate 30 that connects the upper end portions of the side wall plate 32 to each other. have. The side wall plate 32 is provided with an extending portion 32a extending obliquely downward toward the front side of the vehicle.

  Then, the shaft portion of the second support shaft 24 is inserted into the support hole 22 of the bracket body 7 and the insertion hole 33 of the rotating lever 5, and a nut (not shown) is screwed to the tip of the second support shaft 24. Then, by fixing the second support shaft 24 to the pedal bracket 3, the rotating lever 5 is swingably supported with the second support shaft 24 as a fulcrum. At this time, the forward extending portion 32 a provided on the side wall plate 32 extends to the front side of the vehicle with respect to the installation portion of the first support shaft 16, and the lower surface of the extending portion 32 a is the pedal body 2. It installs in the state which contacts the upper surface part of the boss | hub part 21 of this.

  Returning to FIG. 1 again, a vehicle body side member 36 made of an instrument panel reinforcement for supporting a steering column is disposed at a predetermined distance behind the rotating lever 5.

  When the dash panel 1 and the pedal bracket 3 are retracted when the vehicle collides, and the rear side surface of the rotating lever 5 attached to the pedal bracket 3 comes into contact with the vehicle body side member 36, as shown in FIG. Then, the second support shaft 24 is used as a fulcrum to turn and displace the extending portion 32a of the rotating lever 5 in the descending direction, whereby the A portion (FIG. 4) is a contact portion with the boss portion 21 in the extending portion 32a. And FIG. 5) pushes the first support shaft 16 downward via the boss portion 21 of the pedal body 2, and accordingly, the projection 12 supporting the first support shaft 16 is pushed downward. Thus, the support state of the first support shaft 16 is released. That is, a release pushing portion for releasing the support state of the first support shaft 16 by pushing the first support shaft 16 at the time of a vehicle collision is provided in the portion A set on the lower surface of the extension portion 32a. It has been.

  Next, when the pedal bracket 3 is further retracted in accordance with the collision load of the vehicle, as shown in FIG. 6, the first support shaft 16 released from the support state is placed on the extending portion 32 a of the rotating lever 5. It moves to the rear side of the vehicle along the guide groove 14 while being pushed. As a result, the upper portion of the pedal body 2 moves to the rear side of the vehicle with the installation portion of the push rod 35 that drives the brake booster 4 as a fulcrum, and the pedal depression provided at the lower end portion of the pedal body 2 correspondingly. The part 34 moves to the front side of the vehicle.

  Here, the guide groove 14 for guiding the first support shaft 16 released from the support state to the rear side of the vehicle is the second pivot point of the pivot lever 5 as it reaches the rear side of the vehicle. It is formed so that the separation distance from the support shaft 24 is increased. Therefore, as the first support shaft 16 moves toward the rear side of the vehicle along the guide groove 14, the first support shaft 16 gradually moves away from the second support shaft 24 (along the lower surface of the extending portion 32a). Will be displaced by sliding. In other words, the pushing position of the extending portion 32a that moves the first support shaft 16 to the rear side of the vehicle via the boss portion 21 of the pedal body 2 is accompanied by the rearward movement of the first support shaft 16. Transition is gradually made from the release pushing part A to the front end side of the extension part 32a, and finally, as shown in FIG. 6, the transition is made to a position C that is a predetermined distance away from the release pushing part A. . Assuming that the region from the release pushing portion A to the position C in the extended portion 32a is B portion, the rotating lever 5 is supported by the B portion set on the lower surface of the extended portion 32a. The first support shaft 16 released from is pushed (while being slid and displaced along the lower surface of the extending portion 32a), thereby moving the first support shaft 16 to the rear side of the vehicle. That is, a movement pushing portion that pushes the first support shaft 16 released from the support state and moves it to the rear side of the vehicle is provided in the B portion of the extension portion 32a.

  As described above, according to the first embodiment, the pedal body 2 is supported by the pedal bracket 3 attached to the dash panel 1 via the first support shaft 16 extending in the vehicle width direction in the normal traveling state. By doing so, a stable support state of the pedal body 2 can be obtained with a simple configuration, and the operational feeling when the pedal body 2 is swung can be maintained in a good state. That is, the pedal bracket 3 is provided with a support hole 10 through which the first support shaft 16 is inserted and a protrusion 12 that supports the first support shaft 16 below the support hole 10, and is supported by the protrusion 12. Since the pedal body 2 is supported by the pedal bracket 3 via the first support shaft 16, the support state of the first support shaft 16 is released unless the protrusion 12 is deformed. The pedal body 2 can be stably supported with a simple configuration.

  When the vehicle collides, the rotating lever 5 supported by the pedal bracket 3 via the second support shaft 24 is rotated and displaced by interfering with the vehicle body side member 36, and the rotating lever 5 is rotated. By releasing the support state of the first support shaft 16 according to the displacement and moving the first support shaft 16 to the rear side of the vehicle, the pedal is set with the installation portion of the push rod 35 that drives the brake booster 4 as a fulcrum. Since the upper part of the main body 2 can be moved to the rear side of the vehicle and the pedal stepping part 34 provided at the lower end of the pedal main body 2 can be moved to the front side of the vehicle correspondingly, It is possible to easily and effectively reduce the load input from the pedal depression unit 34 to the driver's feet.

  In particular, in the first embodiment, the release lever A that releases the support state by pushing the first support shaft 16 on the rotating lever 5 and the first support that has been released from the support state. A moving pusher B that pushes the shaft 16 and moves it to the rear side of the vehicle is provided. From the second support shaft 24 that is the swinging fulcrum of the turning lever 5 to the moving pusher B. Since the distance is set to a value larger than the distance from the second support shaft 24 to the release pushing portion A, the support state of the first support shaft 16 can be easily released and the support state is released. There is an advantage that the load acting on the driver's feet can be effectively reduced by moving the first support shaft 16 greatly to the rear side of the vehicle. That is, when the support state of the first support shaft 16 is released, the first support shaft is released by the release pushing portion A installed at a distance close to the second support shaft 24 that is the swing support point of the turning lever 5. By pushing 16, the first support shaft 16 can be pushed with a large driving force to easily release the support state. Then, after the support state of the first support shaft 16 is released, the first support shaft 16 can be moved to the rear side of the vehicle without applying such a large driving force. The first support shaft 16 is pushed by the moving pushing portion B installed at a distance from the support shaft 24, thereby changing the lever ratio of the rotating lever 5 to shorten the first support shaft 16. It will be possible to move greatly to the rear side of the vehicle over time. For this reason, the pedal depression part 34 provided in the lower end part of the said pedal main body 2 can be largely moved to the front side of a vehicle in a short time, and the load input into a driver | operator's step can be reduced effectively. it can.

  Further, in the first embodiment, as the guide means for guiding the first support shaft 16 released from the support state to the rear side of the vehicle, the guide groove 14 curved downward is formed in the side wall plate 9 of the bracket body 7. Therefore, the first support shaft 16 released from the support state can be smoothly moved to the rear side of the vehicle, and the pedal stepping portion 34 is reliably moved to the front side of the vehicle and input to the driver's feet. There is an advantage that the load that is applied can be effectively reduced.

  Further, in the first embodiment, the first support shaft 16 is moved along the guide groove 14 formed so that the distance from the second support shaft 24 increases toward the rear side of the vehicle. While being pushed by the moving part B, it is moved to the rear side of the vehicle while being gradually slid and displaced in the direction away from the second support shaft 24 along the lower surface of the extending part 32a. There is an advantage that the first support shaft 16 can be moved largely to the rear side of the vehicle in a stable state while continuously changing the lever ratio.

(Embodiment 2)
FIG. 7 shows a support structure for an operation pedal according to the second embodiment of the present invention. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The same applies to the third embodiment and later described later.

  In the second embodiment, as a guide means for guiding the first support shaft 16 released from the support state to the rear side of the vehicle, the guide hole 14 is provided continuously to the support hole 10 instead of the guide groove 14 in the first embodiment. An opening 44 is formed in the side wall plate 9 of the bracket body 7. The opening 44 includes a vertically extending guide groove 44 a that extends downward and a widened widened portion 44 b that extends from the lower end of the vertically guided groove 44 a to the rear of the vehicle. A rearwardly inclined surface 44c is formed in the expanded portion 44b.

  Then, when the pedal bracket 3 is retracted when the vehicle collides, and the rear side surface of the rotation lever 5 attached to the pedal bracket 3 comes into contact with the vehicle body side member 36, the rotation lever 5 with the second support shaft 24 as a fulcrum. Is pivotally displaced, so that the A portion which is the contact portion with the boss portion 21 in the extending portion 32a pushes the first support shaft 16 downward via the boss portion 21 of the pedal body 2, and accordingly, The protrusion 12 provided below the support hole 10 is deformed and the support state of the first support shaft 16 is released, and the first support shaft 16 released from the support state is moved up and down the opening 44. It penetrates into the guide groove 44a. That is, a release pushing portion for releasing the support state of the first support shaft 16 by pushing the first support shaft 16 at the time of a vehicle collision is provided in the portion A set on the lower surface of the extension portion 32a. It has been.

  Next, when the pedal bracket 3 is further retracted according to the collision load of the vehicle, as shown in FIG. 8, the first support shaft 16 released from the support state is pushed up and down by the extension portion 32a. It moves downward along the guide groove 44a. At this time, the first support shaft 16 slides and displaces in a direction away from the second support shaft 24 that is the swing support point of the rotation lever 5 along the lower surface of the extending portion 32a. Then, when the pedal bracket 3 is further retracted from the state, as shown in FIG. 9, the first support shaft 16 is separated from the release pushing portion A by a predetermined distance toward the front end portion in the extending portion 32a. While being pushed by the portion B, the vehicle moves to the rear side of the vehicle along the inclined surface 44c formed in the expanding portion 44b. In other words, a moving push part that pushes the first support shaft 16 after dropping and moves it to the rear side of the vehicle is provided in the B part of the extension part 32a.

  As described above, in the second embodiment, after the first support shaft is pushed by the release pushing portion A installed on the lower surface of the extending portion 32a and the support state is released at the time of the collision of the vehicle. The first support shaft 16 whose support state has been released is temporarily moved downward along the vertical guide groove 44a, and the first support shaft 16 after the downward movement is compared with the release pushing portion A. Since it is moved to the rear side of the vehicle along the inclined surface 44c while being pushed by the moving pushing portion B installed at a position where the separation distance from the second spindle is large, the same as in the first embodiment. In addition, there is an advantage that the support state of the first support shaft can be easily released with a large driving force, and the first support shaft 16 whose support state has been released can be moved greatly to the rear side of the vehicle. For this reason, the pedal depression part 34 provided in the lower end part of the pedal main body 2 can be largely moved to the front side of the vehicle, and the load input to the driver's feet can be effectively reduced.

(Embodiment 3)
In the first and second embodiments, the guide means (the guide groove 14 and the opening 44) for guiding the first support shaft 16 to the rear side of the vehicle when the vehicle collides is provided on the side wall plate 9 of the bracket body 7. It is also possible to provide the guide means on the rotating lever 5. FIG. 10 is a view showing an example in which the guide means is provided on the rotating lever 5, and is a view showing a support structure of the operation pedal according to the third embodiment of the present invention.

In the third embodiment, a holding slit 52 for receiving and holding the first support shaft 16 (the boss portion 21 that holds the first support shaft 16) whose support state has been released is formed in the extending portion 32 a of the rotating lever 5. ing. The side wall plate 9 of the bracket body 7 is formed with an opening 54 composed of upper and lower guide grooves 54a (guide grooves) and an expanded portion 54b. Of these, the expanded portion 54b includes the second portion. Unlike the embodiment, since the inclined surface (inclined surface 44c in the second embodiment) for guiding the first support shaft 16 to the rear side of the vehicle is not formed, the first support shaft 16 has an upper and lower guide groove. After moving downward along 54a, the bracket is completely detached from the bracket body 7 in the expanded portion 54b.

  Then, in the initial stage of the collision shown in FIG. 11, the first support shaft 16, which is pushed by the extending portion 32 a of the rotating lever 5 and released from the support state, is lowered along the upper and lower guide grooves 54 a of the opening 54. To move away from the bracket body 7. At this time, the holding slit 52 provided in the extension portion 32a is moved below the upper and lower guide grooves 54a with the rotational displacement of the rotating lever 5, and the holding slit 52 is moved to the position after the separation. The first support shaft 16 is received.

  Thereafter, when the rotating lever 5 is further rotated and displaced in the late stage of the collision, as shown in FIG. 12, the first support shaft 16 is moved largely to the rear side of the vehicle while being held in the holding slit 52, Accordingly, the pedal depression part 34 of the pedal body 2 moves greatly to the front side of the vehicle.

(Embodiment 4)
FIG. 13 shows a support structure for an operation pedal according to a fourth embodiment of the present invention. In this 4th Embodiment, the protrusion part 53 which protrudes below is provided in the front-end part of the top plate 30 and the side wall board 32 (extension part 32a) of the rotation lever 5 shown in FIG. The projecting portion 53 is installed at a position where it comes into contact with the front surface of the pedal body 2 in accordance with the rotational displacement of the rotational lever 5 when the vehicle collides.

When the pedal bracket 3 is retracted when the vehicle collides, and the rear side surface of the rotation lever 5 attached to the pedal bracket 3 comes into contact with the vehicle body side member 36, the rotation lever 5 rotates around the second support shaft 24 as a fulcrum. By dynamically displacing, the A portion, which is a contact portion with the boss portion 21 in the extending portion 32a, pushes the first support shaft 16 downward via the boss portion 21 of the pedal body 2, and is supported accordingly. with the support state of the first support shaft 16 is released projection 12 projecting from the lower side of the hole 10 is deformed, the first support shaft 16 to which the support state is released, with the above-mentioned support hole 10 After being installed, it enters the guide groove 64 that curves downward . That is, a release pushing portion that releases the support state of the first support shaft 16 by pushing the first support shaft 16 at the time of a vehicle collision and drops it downward is provided on the lower surface of the extension portion 32a. It is provided in the set A part.

  Next, when the pedal bracket 3 is further retracted according to the collision load of the vehicle (when a predetermined time elapses after the support state of the first support shaft 16 is released), as shown in FIG. In response to the rotational displacement, the portion B, which is the tip of the protruding portion 53, comes into contact with the upper front surface of the pedal body 2, and the first support shaft 16 released from the support state accordingly corresponds to the guide groove 64. Along the rear of the vehicle. That is, the movement pushing portion that pushes the upper portion of the pedal body 2 and moves it to the rear side of the vehicle after a predetermined time has elapsed after the support state of the first support shaft 16 is released is a portion B of the protruding portion 53. Is provided.

  As mentioned above, in the said 4th Embodiment, the 1st spindle 16 is pushed by the pushing part A for release installed in the lower surface of the extension part 32a, the support state is cancelled | released, and the predetermined time passes. Later, the upper part of the pedal body 2 is pushed by the moving pusher B installed at a position where the separation distance from the second support shaft 24 is larger than that of the release pusher A. There is an advantage that the lever ratio of the rotating lever 5 for driving the one support shaft 16 is intermittently changed, and the first support shaft 16 can be moved largely to the rear side of the vehicle accordingly. Moreover, in the present embodiment, the upper portion of the pedal body 2 that is pushed by the movement pushing portion B is separated from the second spindle 24 that is the pivot point of the turning lever 5 by the first spindle 16. Compared with the first to third embodiments in which the first support shaft 16 is pushed and moved to the rear side of the vehicle, the lever ratio of the rotating lever 5 can be changed more greatly. The first support shaft can be greatly moved to the rear side of the vehicle in a shorter time.

(Embodiment 5)
FIG. 15 shows a support structure for an operation pedal according to a fifth embodiment of the present invention. In the fifth embodiment, the bracket body 7 extends in the vehicle width direction between the installation portion of the push rod 35 that drives the brake booster 4 and the installation portion of the first support shaft 16, and the rear surface of the pedal body 2 is predetermined. An interference member 26 is provided that is installed in a state of facing each other at a distance.

Then, when the pedal bracket 3 is retracted when the vehicle collides, and the rear side surface of the rotation lever 5 attached to the pedal bracket 3 comes into contact with the vehicle body side member 36, the rotation lever 5 with the second support shaft 24 as a fulcrum. Is pivotally displaced, so that the extending portion 32a pushes the first support shaft 16 downward via the boss portion 21 of the pedal body 2, and a protrusion protruding below the support hole 10 accordingly. with 12 the support state of the first support shaft 16 is deformed is released, the first support shaft 16 to which the support state is released, the guide groove 74 curved in downward after being continuously to the support hole 10 To the rear side of the vehicle. As a result, as shown in FIG. 16, the upper portion of the pedal body 2 moves to the rear side of the vehicle with the installation portion of the push rod 35 that drives the brake booster 4 as a fulcrum, and the rear surface of the pedal body 2 is the interference member 26. Abut (interference).

  Next, when the pedal bracket 3 is further retracted according to the collision load of the vehicle, as shown in FIG. 17, the first support shaft 16 is pushed by the extension portion 32a of the rotating lever 5 and further on the rear side of the vehicle. Accordingly, the upper portion of the pedal body 2 is moved to the rear side of the vehicle with the contact portion with the interference member 26 as a fulcrum.

  As described above, in the fifth embodiment, when the vehicle collides, the first support shaft 16 is released from the support state, and the first support shaft 16 released from the support state is moved to the rear side of the vehicle. In addition to the lever 5, an interference member 26 that interferes with the rear surface of the pedal body 2 when the first support shaft 16 moves backward is provided between the installation portion of the push rod 35 and the installation portion of the first support shaft 16. Therefore, the position of the swing fulcrum of the pedal body 2 that swings and displaces according to the backward movement of the first support shaft 16 at the time of the vehicle collision can be changed between the initial stage of the collision and the late stage of the collision. Thus, there is an advantage that the pedal stepping portion 34 provided at the lower end portion of the pedal body 2 can be largely moved to the front side of the vehicle in a short time. That is, in the initial stage of the collision, the upper portion (first support shaft 16) of the pedal body 2 is moved to the rear side of the vehicle with the installation portion of the push rod 35 as a fulcrum, whereas in the late stage of the collision, the pedal body 2 By causing the rear surface to interfere with the interference member 26, the position of the swing fulcrum of the pedal body 2 is changed from the installation portion of the push rod 35 to the installation portion of the interference member 26, so that the rotation lever 5 is pushed. Thus, the swing fulcrum of the pedal body 2 can be brought closer to the first support shaft 16 that moves rearward, and the pedal depression 34 provided at the lower end of the pedal body 2 can be moved forward of the vehicle in a short time. It can be moved greatly to the side.

  The operation pedal support structure described in the first to fifth embodiments as described above is an example of an embodiment of the operation pedal support structure according to the present invention. Modifications can be made as appropriate without departing from the scope of the invention. For example, in the first to fifth embodiments, the first support shaft 16 is supported by the pair of front and rear projections 12 projecting below the support hole 10, and the projection 12 is pushed downward when the vehicle collides. The first support shaft 16 is not supported by the protrusion 12 by being deformed as described above. However, a stable support state of the first support shaft 16 can be obtained in a normal state, and the vehicle crashes. As long as the support structure can properly release the support state of the first support shaft 16 according to the above, it is possible to adopt various structures without being limited to the above structure. It is also possible to provide a closing part that is divided into two parts and to break the closing part when the vehicle collides.

It is a side view showing a 1st embodiment of a support structure of an operation pedal concerning the present invention. It is a disassembled perspective view which shows the specific structure of the support structure of the said operation pedal. It is a front view which shows the specific structure of the support structure of the said operation pedal. It is a side view which shows the specific structure of the support structure of the said operation pedal, and is a figure which shows the support state of the pedal main body in the normal time. It is a figure which shows the state of the said pedal main body in the initial stage of a collision. It is a figure which shows the state of the said pedal main body in the collision late stage. It is a side view which shows 2nd Embodiment of the support structure of the operation pedal concerning this invention, and is a figure which shows the support state of the pedal main body in normal time. It is a figure which shows the state of the said pedal main body in the initial stage of a collision. It is a figure which shows the state of the said pedal main body in the collision late stage. It is a side view which shows 3rd Embodiment of the support structure of the operation pedal concerning this invention, and is a figure which shows the state of the pedal main body in the collision initial stage. It is a figure which shows the state of the said pedal main body in the initial stage of a collision. It is a figure which shows the state of the said pedal main body in the collision late stage. It is a side view which shows 4th Embodiment of the support structure of the operation pedal concerning this invention, and is a figure which shows the support state of the pedal main body in the normal time. It is a figure which shows the state of the said pedal main body in the collision late stage. It is a side view which shows 5th Embodiment of the support structure of the operation pedal concerning this invention, and is a figure which shows the support state of the pedal main body in normal time. It is a figure which shows the state of the said pedal main body in the initial stage of a collision. It is a figure which shows the state of the said pedal main body in the collision late stage.

DESCRIPTION OF SYMBOLS 1 Dash panel 2 Pedal body 3 Pedal bracket 4 Brake booster 5 Rotating lever 14 Guide groove 16 1st spindle 24 2nd spindle 26 Interference member 35 Push rod 36 Car body side member 52 Holding slit A Release | release pushing part B Movement Pushing part

Claims (4)

A support structure for an operation pedal that is pivotally supported by a dash panel and swings in the longitudinal direction of the vehicle,
A pedal bracket attached to the dash panel and extending to the rear side of the vehicle;
A pedal body that is swingably supported via a first support shaft that is installed in the pedal bracket and extends in the vehicle width direction;
The second support shaft is pivotally supported via a second support shaft installed in the pedal bracket and extending in the vehicle width direction, and is rotated about the second support shaft by interfering with a vehicle body side member at the time of a vehicle collision. A rotating lever that is displaced,
The pivot lever includes a release pushing portion that releases the support state of the first spindle by the pedal bracket by pushing the first spindle along with the pivot displacement at the time of the vehicle collision, A moving pusher that pushes the upper portion of the first support shaft or pedal body released from the support state to move the first support shaft to the rear side of the vehicle; and
The distance from the second support shaft to the moving push portion is set to a larger value than the distance from the second support shaft to the release push portion ,
A guide groove that is curved downwardly and that guides the first support shaft released from the support state to the rear side of the vehicle is provided on the side wall of the pedal bracket.
The guide groove is formed such that the distance from the second support shaft increases toward the rear side of the vehicle.
The rotating lever moves toward the rear side of the vehicle while sliding the first support shaft moving along the guide groove in a direction away from the second support shaft while being pushed by the moving pushing portion. A support structure for an operating pedal, characterized by being moved . A support structure for an operation pedal that is pivotally supported by a dash panel and swings in the longitudinal direction of the vehicle,
  A pedal bracket attached to the dash panel and extending to the rear side of the vehicle;
  A pedal body that is swingably supported via a first support shaft that is installed in the pedal bracket and extends in the vehicle width direction;
  The second support shaft is pivotally supported via a second support shaft installed in the pedal bracket and extending in the vehicle width direction, and is rotated about the second support shaft by interfering with a vehicle body side member at the time of a vehicle collision. A rotating lever that is displaced,
  The pivot lever includes a release pushing portion that releases the support state of the first spindle by the pedal bracket by pushing the first spindle along with the pivot displacement at the time of the vehicle collision, A moving pusher that pushes the upper portion of the first support shaft or pedal body released from the support state to move the first support shaft to the rear side of the vehicle; and
  The distance from the second support shaft to the moving push portion is set to a larger value than the distance from the second support shaft to the release push portion,
  On the side wall of the pedal bracket, a guide groove for guiding the first support shaft released from the support state downward is provided,
  The rotating lever has a holding slit for holding the first support shaft released from the lower side of the guide groove after the support state is released, and rotates with the first support shaft held in the holding slit. A support structure for an operation pedal, wherein the first support shaft is moved and moved to the rear side of the vehicle. A support structure for an operation pedal that is pivotally supported by a dash panel and swings in the longitudinal direction of the vehicle,
  A pedal bracket attached to the dash panel and extending to the rear side of the vehicle;
  A pedal body that is swingably supported via a first support shaft that is installed in the pedal bracket and extends in the vehicle width direction;
  The second support shaft is pivotally supported via a second support shaft installed in the pedal bracket and extending in the vehicle width direction, and is rotated about the second support shaft by interfering with a vehicle body side member at the time of a vehicle collision. A rotating lever that is displaced,
  The pivot lever includes a release pushing portion that releases the support state of the first spindle by the pedal bracket by pushing the first spindle along with the pivot displacement at the time of the vehicle collision, A moving pusher that pushes the upper portion of the first support shaft or pedal body released from the support state to move the first support shaft to the rear side of the vehicle; and
  The distance from the second support shaft to the moving push portion is set to a larger value than the distance from the second support shaft to the release push portion,
  A guide groove that is curved downwardly and that guides the first support shaft released from the support state to the rear side of the vehicle is provided on the side wall of the pedal bracket.
  The rotating lever pushes the upper portion of the pedal body by the moving pushing portion after a predetermined time has elapsed after releasing the support state of the first supporting shaft, thereby moving the first supporting shaft to the guide. A support structure for an operation pedal, wherein the support pedal is moved to the rear side of the vehicle along a groove. A support structure for an operation pedal that is pivotally supported by a dash panel and swings in the longitudinal direction of the vehicle,
  A pedal bracket attached to the dash panel and extending to the rear side of the vehicle;
  A pedal body that is swingably supported via a first support shaft that is installed in the pedal bracket and extends in the vehicle width direction;
  The second support shaft, which is installed on the pedal bracket and extends in the vehicle width direction, is supported so as to be able to swing. When the vehicle collides, the second support shaft is pivotally displaced about the second support shaft by interfering with the vehicle body side member. A pivot lever,
  The rotation lever pushes the first support shaft in accordance with the rotation displacement at the time of the vehicle collision, thereby releasing the support state of the first support shaft and releasing the support state of the first support shaft. Move the spindle to the rear of the vehicle,
  A guide groove that is curved downwardly and that guides the first support shaft released from the support state to the rear side of the vehicle is provided on the side wall of the pedal bracket.
  The pedal body has an installation portion of a push rod for driving a brake booster which becomes a swing fulcrum of the pedal body when the support state of the first support shaft is released from the installation portion of the first support shaft. Is also provided below,
  The pedal bracket is provided with an interference member that interferes with a vehicle rear side surface of the pedal body when the first support shaft is moved rearward between the installation portion of the first support shaft and the installation portion of the push rod. An operating pedal support structure characterized by that.

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