JP4754944B2 - 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 of a vehicle and is swing-operated in the front-rear direction of a vehicle body.

  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 turning 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 disposed rearward of the vehicle body 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 body 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 body.

  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 rotating link so as to cause the rotating shaft to be 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 body. 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, even if the dash panel is retracted in the event of a vehicle collision, the pedal stepping part provided at the lower end of the pedal body moves to the rear side of the vehicle body 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 described above, a rotating shaft serving as a swing fulcrum provided at the upper end of the pedal body is moved to the rear side of the vehicle body in the event of a vehicle collision. Correspondingly, the pedal depression portion provided at the lower end portion of the pedal body is configured to move to the front side of the vehicle body, so that it is input to the foot portion of the driver placed on the pedal depression portion. It is possible to reduce the load acting on the foot portion by an inertial force that tends to move the driver forward in response to the load, that is, the front collision load of the vehicle.

  However, in the operation pedal support structure 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 is locked to the upper end portion of the guide groove. Since it is configured, 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 its operational feeling is impaired. When a large external force is applied to the rotating lever, there is a problem that the locked state by the arm portion is released and the pedal body may drop off from the locking portion.

  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.

  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, when the pedal body is expanded and deformed in response to an impact load that is applied at the time of a vehicle collision, a load in an oblique direction acts on the pedal body supported by the pedal bracket. In the inclined state, 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 foot. There is a problem that it cannot be avoided.

  The present invention has been made in view of the above-mentioned problems, and can maintain the feeling of operation of the pedal body in a normal state during normal times, and can easily and effectively prevent the pedal stepping portion from retreating in the event of a vehicle collision. It aims at providing the support structure of the operation pedal which can reduce the load which acts on a driver | operator's foot | leg part.

The invention according to claim 1 is a support structure of an operation pedal that is pivotally supported by the dash panel and is swing-operated in the front-rear direction of the vehicle body, and a pedal bracket that is attached to the dash panel and extends to the rear side of the vehicle body The pedal body is swingably supported via a pedal support shaft installed in the pedal bracket and extending in the vehicle width direction, and is swinged through a lever support shaft installed in the pedal bracket and extending in the vehicle width direction. The pedal support shaft is provided freely and is provided separately from the pedal support shaft. The pedal bracket is provided with a support hole for the pedal support shaft, and the pedal support shaft is moved downwardly below the support hole. an opening to allow, at the upper end of the opening is provided a support portion for supporting the pedal support shaft from below, the pivot lever interferes with the vehicle body member at the time of collision of the vehicle By rotating displacing the bar shaft as a fulcrum, thereby pushing the pedal pivot downward by deforming the supporting portion which has been configured to drop out of the pedal shaft beneath the support hole is there.

According to a second aspect of the present invention, in the support structure for the operation pedal according to the first aspect , from one side of the opening that allows the pedal support shaft to move downward, the other side of the pedal support shaft is located on the other side. A support portion of the pedal support shaft is configured by a protruding portion protruding toward the surface.

According to a third aspect of the present invention, in the support structure for the operating pedal according to the second aspect , the pedal support is provided by a protrusion that protrudes from the front part of the opening part allowing the downward movement of the pedal support shaft toward the rear part side. This constitutes the shaft support.

According to a fourth aspect of the present invention, in the support structure for the operation pedal according to the third aspect , a notch that promotes plastic deformation of the projecting portion is formed at the base end portion of the projecting portion that constitutes the support portion of the pedal support shaft. The part is formed.

According to a fifth aspect of the present invention, in the operation pedal support structure according to the fourth aspect of the present invention, the operation pedal is supported so as to be detachably inserted into a notch formed in the base end portion of the projecting portion that supports the pedal support shaft. Thus, a deformation suppressing portion that suppresses plastic deformation of the protruding portion is provided.

According to a sixth aspect of the present invention, in the operating pedal support structure according to the fifth aspect of the present invention, the rotation lever is provided with a deformation suppressing portion that is removably inserted into the notch portion.

According to a seventh aspect of the present invention, in the operation pedal support structure according to the sixth aspect of the present invention, before the pedal support shaft is pushed downward by the rotation lever at the time of a vehicle collision, the deformation suppressing portion of the rotation lever is provided. Is configured to be detached from the notch.

The invention according to claim 8 is the operation pedal support structure according to claim 1 , wherein the pedal support shaft is supported by a pair of front and rear protrusions provided at the upper end of the opening that allows the pedal support shaft to move downward. The support portion is configured.

According to a ninth aspect of the present invention, in the operation pedal support structure according to any one of the first to eighth aspects, when the vehicle collides, the operation pedal is dropped from the support hole provided in the pedal bracket to the lower side of the pedal support shaft. Immediately after, the pedal main body is detached from the pedal bracket.

According to the invention according to claim 1, in a normal running condition, rocking by supporting the pedal pivot stably into the supporting hole of the pedal bracket by the supporting portion, the pedal the body as a fulcrum of the pedal shaft There are advantages that the operational feeling during operation can be maintained in a good state and that the pedal body can be stably supported with a simple configuration. When the vehicle collides, the pedal support shaft is caused to fall below the support hole by, for example, pushing the pedal support shaft downward by the dropping means including the pivot lever and the vehicle body side member to deform the support portion. Therefore, even when a collision accident occurs when the driver's feet are placed on the pedal depression provided at the lower end of the pedal body, the pedal depression is located on the rear side of the vehicle body together with the pedal body. There is an advantage that it is possible to effectively prevent an excessive load from acting on the foot of the driver due to being pushed.

In the invention according to claim 2 , in the normal state, the pedal support shaft can be stably supported by the support portion, and at the time of a collision of the vehicle, the pedal support shaft is pushed downward by the turning lever. The pedal support shaft can be effectively detached from the support hole by deforming the tip portion so as to be lowered.

According to the invention of claim 3 , by making the driving direction of the pedal spindle by the rotating lever coincide with the falling direction of the pedal spindle, the pedal spindle can be easily removed from the support hole in the event of a vehicle collision. Can be dropped.

According to the invention according to claim 4 , since the plastic deformation is promoted by forming a notch portion in the base end portion of the support portion, the support portion is efficiently plasticized at the time of a vehicle collision. The pedal support shaft can be easily detached from the support hole by being deformed.

According to the fifth aspect of the present invention, in a normal state, the deformation supporting portion provided on the rotating lever is inserted into the notch portion of the pedal bracket, thereby preventing plastic deformation of the support portion and stabilizing the pedal support shaft. In addition, the support portion can be easily plastically deformed and the pedal support shaft can be reliably removed from the support hole by detaching the deformation suppressing portion from the notch portion in the event of a vehicle collision. it can.

According to the sixth aspect of the present invention, since the deformation suppressing portion provided on the rotating lever is removably inserted into the notch portion of the pedal bracket, in a normal traveling state, the support portion can be configured with a simple configuration. The pedal support shaft can be stably supported by preventing plastic deformation, and by removing the deformation suppressing portion from the notch portion according to the rotational displacement of the rotating lever at the time of a vehicle collision, There is an advantage that the support portion can be easily plastically deformed so that the pedal support shaft can be reliably dropped from the support hole.

According to the seventh aspect of the present invention, in a normal running state, the deformation suppressing portion can effectively suppress the deformation of the support portion, and the deformation suppressing portion is turned off at the time of a vehicle collision. When the support part is easily plastically deformed when it is led out of the notch part and separated from the support part, the pedal support shaft can be easily detached from the support part.

According to the invention of claim 8 , while simplifying the structure of the pedal bracket, the pedal support shaft can be held in a stable support state in a normal traveling state, and the support portion can be easily provided in the event of a vehicle collision. The pedal support shaft can be easily dropped from the support hole by plastic deformation.

According to the ninth aspect of the present invention, since the pedal support shaft is separated from the pedal bracket immediately after the pedal support shaft is dropped, the pedal body is provided at the lower end portion of the pedal body by releasing the restrained state of the pedal body by the pedal bracket. When an accident occurs with the driver's feet placed on the pedal depressing part, the pedal depressing part is pushed to the rear side of the vehicle body together with the pedal body. There is an advantage that an excessive load can be effectively prevented from acting on the foot portion.

  FIG. 1 shows a support structure for an operation pedal according to an 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 drop downward 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 body. 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 protrudes downward. . Further, the bracket body 7 of the pedal bracket 3 includes a pair of left and right vertical plates 9 extending from the left and right side portions of the mounting board 6 to the rear side of the vehicle body, and a pair of left and right extending from the lower end portion to the outer side in the vehicle width direction. Horizontal plate 10, a pair of left and right outer plates 11 extending downward from the outer end of the horizontal plate 10, and a pair of left and right extending obliquely from the lower end of the outer plate 11 toward the inner side in the vehicle width direction. The inclined plate 12 is provided.

  The vertical plate 9 of the bracket body 7 has a support hole 14 of a first support shaft (pedal support shaft) 13 serving as a swing support point of the pedal body 2 and an inclination extending obliquely rearward from the lower side portion of the support hole 14. A groove 15 is formed. Further, a notch portion 16 extending obliquely toward the support hole 14 is formed on the front side of the inclined groove portion 15, and a swing fulcrum of the rotating lever 5 is provided on the rear side of the support hole 14. A support hole 18 of a lever spindle composed of the second spindle 17 is formed.

  Below the inclined groove portion 15 and the notch portion 16 provided on the vertical plate 9 of the bracket body 7, the lower side portion of the vertical plate 9, the center portion in the front-rear direction of the horizontal plate 10, and the upper side of the outer plate 11. A substantially rectangular opening 19 is formed by cutting a side portion over a predetermined range, and a substantially trapezoidal support portion 20 is defined by the opening 19 and the inclined groove 15 and the notch 16. Has been. The support portion 20 is provided at the upper end portion of the opening portion 19 and includes a protrusion projecting from the front portion thereof toward the rear portion side with respect to the center portion of the first support shaft 13. One support shaft 13 is supported from below, and the downward movement thereof is restricted. Further, in the event of a vehicle collision, the support portion 20 is deformed in accordance with the rotational displacement of the rotational lever 5 as will be described later, so that the first support shaft 13 is allowed to fall below the support hole 14. It has come to be.

  And the fixing | fixed part provided in the right-and-left both ends of the 1st spindle 13 is press-contacted in the vehicle width direction with respect to the peripheral part of the support hole 14 formed in the vertical board 9 of the said pedal bracket 3, A 1st One spindle 13 is attached to the pedal bracket 3. That is, the shaft portion of the first support shaft 13 is inserted into the insertion hole provided in the support hole 14 of the bracket body 7 and the boss portion 21 of the pedal body 2, and at the distal end portion of the first support shaft 13. When the nut 22 is screwed, the bolt head portion 23 of the first support shaft 13 and the fixing portion made of the nut 22 are pressed against the peripheral portion of the support hole 14 in the vehicle width direction. A single support shaft 13 is attached to the pedal bracket 3, and the pedal body 2 is swingably supported with the first support shaft 13 as a fulcrum.

  The rotating lever 5 includes a pair of left and right legs 26 in which an insertion hole 25 of the second support shaft 17 is formed at the lower end, a pair of left and right side wall plates 27 provided at the upper end of the leg 26, A top plate 28 that connects the upper end portions of the left and right side wall plates 27 to each other. An extension portion 28a that extends obliquely downward toward the front side of the vehicle body from the leg body 26 is provided at the front portion of the top plate 28. In addition to being installed, an arcuate corner portion 29 is formed at the connecting portion between the leg body 26 and the side wall plate 27. Further, the side wall plate 27 is deformed by a reinforcing portion 30 which is inserted into the notch portion 16 of the pedal bracket 3 and reinforces the supporting portion 20 at a normal time, thereby suppressing deformation of the supporting portion 20. The restraining part projects from the front part of the corner part 29. Further, as shown in FIG. 4, a rear notch 31 is formed in the center of the front end of the extension 28 a, and the notch 31 is installed in a state of facing the pedal body 2. It is like that.

  Then, the shaft portion of the second support shaft 17 is inserted into the support hole 18 of the bracket body 7 and the insertion hole 25 of the rotation lever 5, and a nut is screwed to the tip portion of the second support shaft 17. By attaching the second support shaft 17 to the pedal bracket 3, the rotating lever 5 is supported so as to be swingable about the second support shaft 17 as a fulcrum. Further, the reinforcing portion 30 of the rotating lever 5 is inserted into the notch portion 16 of the pedal bracket 3, and the corner portion 29 of the rotating lever 5 is placed at a predetermined distance from the first support shaft 13. It is installed in a state facing the upper part. Further, the forward extending portion 28a provided on the top plate 28 is installed so as to extend further to the front side of the vehicle body than the installation portion of the first support shaft 13, so that They are arranged in a state of facing each other at a predetermined distance.

  As shown in FIG. 1, an instrument panel reinforcement 32 for supporting a steering column made of a pipe material is disposed at a predetermined distance on the rear side of the rotating lever 5. The reinforcement 32 is provided with a vehicle body side member 33 facing the rear end portion of the rotating lever 5 at a predetermined distance. Then, when the dash panel 1 and the pedal bracket 3 are retracted when the vehicle collides, and the rear end portion of the rotating lever 5 attached to the pedal bracket 3 comes into contact with the vehicle body side member 33, as shown in FIG. After the second support shaft 17 is pivoted and displaced in the direction in which the front end of the pivot lever 5 descends, the reinforcing portion 30 is detached from the notch 16 of the pedal bracket 3 to the lower side. The corner portion 29 of the turning lever 5 comes into contact with the boss portion 21 holding the first support shaft 13 and the first support shaft 13 is pushed downward.

  When the pedal bracket 3 is further retracted according to the collision load of the vehicle, as shown in FIG. 6, the support portion 20 provided on the pedal bracket 3 starts from the notch portion 16 provided at the front end portion thereof. By the plastic deformation so as to be pushed down, the inclined groove portion 15 is expanded and deformed. As a result, the support state of the first support shaft 13 by the support portion 20 is released, and the first support shaft 13 is slid downward along the guide portion including the inclined groove portion 15 expanded as described above. As a result, it moves into the opening 19 located below the support hole 14 and drops out of the support hole 14, and immediately after that, as shown in FIG. A fixed portion of the support shaft 13 is introduced between the left and right outer plates 11 through an opening 19 formed in the pedal bracket 3 so that the pedal body 2 is detached from the pedal bracket 3 accordingly. It has become.

  Further, after the first support shaft 13 is dropped downward, as shown in FIG. 8, the front portion (extending portion 28 a) of the top plate 28 provided on the rotating lever 5 is located on the upper front surface of the pedal body 2. By abutting, the upper part of the pedal body 2 is pushed to the rear side of the vehicle body, and the pedal body 2 is rotationally displaced with the installation portion of the push rod 35 that drives the brake booster 4 as a fulcrum. That is, at the time of a vehicle collision, the first support shaft 13 and the pedal body 2 are brought into contact with the front surface of the pedal body 2 at the lower portion of the first support shaft 13 that has fallen downward from the support portion of the pedal bracket 3. Backward moving means for moving the upper part to the rear side of the vehicle body is constituted by an extending portion 28a formed of a front portion of the top plate 28.

  As described above, the pedal bracket 3 attached to the dash panel 1 and extending toward the rear side of the vehicle body and the first support shaft 13 installed in the pedal bracket 3 and extending in the vehicle width direction are supported to be swingable. In the operation pedal support structure provided with the pedal body 2, the pedal bracket 3 is provided with a support hole 14 for the pedal support shaft including the first support shaft 13, and the first support shaft 13 is moved downwardly below the support hole 14. Since the opening 19 to be allowed and the support portion 20 that supports the first support shaft 13 from below are provided at the upper end portion of the opening 19, the first support shaft 13 is supported by the support portion 20 in a normal traveling state. Can be stably supported in the support hole 14 of the pedal bracket 3. Accordingly, the operational feeling when swinging the pedal body 2 with the first support shaft 13 as a fulcrum can be maintained in a good state, and even when a large external force or the like that biases the pedal body 2 downward is applied. As long as the support portion 20 is not deformed, the first support shaft (pedal support shaft) 13 does not drop out of the support hole, and a stable support state of the pedal body 2 can be obtained with a simple configuration. is there.

  In the event of a vehicle collision, the first support shaft 13 is deformed by pushing the first support shaft 13 downward by the drop-off means comprising the rotating lever 5 to deform the support portion 20, thereby bringing the first support shaft 13 below the support hole 14. Since it is configured to drop off, there is an advantage that it is possible to effectively reduce the load acting on the foot of the driver placed on the pedal depression 34 when a collision accident occurs. That is, in the above embodiment, the front end portion of the vehicle body side member 33 is brought into contact with the rear end portion of the turning lever 5 when a frontal collision accident of the vehicle occurs and the dash panel 1 is pushed backward. Then, the rotary lever 5 is rotated and displaced with the second support shaft 17 as a fulcrum, thereby applying a pressing force for displacing the first support shaft 13 downward, and the support portion 20 is moved according to the pressing force. Since it is configured to be deformed, the support state of the first support shaft 13 by the support portion 20 can be released and the first support shaft 13 can be dropped below the support hole 14 when a collision accident occurs. As a result, even when a collision accident occurs with the driver's foot placed on the pedal stepping portion 34, the pedal stepping portion 34 is pushed to the rear side of the vehicle body together with the pedal body 2. As a result, it is possible to effectively prevent an excessive load from acting on the driver's foot.

In addition , as shown in the above-described embodiment, the first support shaft 13 is driven by the rotation lever 5 to constitute a drop-off means for dropping down below the support hole 14, and the first support shaft is provided on the rotation lever 5. A rearward movement means comprising an extension portion 28a extending to the front side of the vehicle body from the installation portion 13 is provided, and the extension portion 28a of the rotating lever 5 is connected to the first support shaft 13 of the pedal body 2 at the time of a vehicle collision. When the upper part of the pedal body 2 is moved to the rear side of the vehicle body by contacting the lower part (see FIG. 8), the first support shaft 13 is easily dropped from the support hole 14. In addition, by changing the lever ratio of the rotating lever 5 that drives the pedal body 2 thereafter, the upper portion of the pedal body 2 is largely displaced toward the rear side of the vehicle body with the installation portion of the push rod 35 as a fulcrum. With The pedaling section 34 is moved largely to the vehicle body front side can be effectively reduce the load acting on the foot portion of the driver.

  That is, when the dropping means is constituted by the rotating lever 5 as described above, when the corner 29 is brought into contact with the first support shaft 13 and the first support shaft 13 is removed from the support hole 14, The driving force of the rotating lever 5 can be increased by the lever principle, and the upper end portion of the pedal body 2 can be easily dropped downward with a large force. And since the upper part of the pedal body 2 can be moved to the rear side of the vehicle body without applying such a large driving force after the first support shaft 13 is dropped from the support hole 14, the above-mentioned The driven portion of the pedal body 2 driven by the extension portion 28 a of the rotating lever 5, that is, the contact portion of the extension portion 28 a is used as an installation portion of the push rod 35 that serves as a swing fulcrum of the pedal body 2. By setting the close position, the pedal body 2 can be greatly swung and displaced, and the pedal stepping portion 34 can be moved largely to the front side of the vehicle body. Therefore, the driver tries to move forward in response to the load input to the driver's foot from the pedal depression 34 provided at the lower end of the pedal body 2, that is, the frontal collision load of the vehicle. There is an advantage that the load acting on the driver's foot due to the inertial force can be effectively reduced.

  In particular, in the above-described embodiment, as shown in FIGS. 2 and 4, since the notch 31 having a rear narrowing is formed in the center of the front end portion of the top plate 28 of the rotation lever 5, the extension of the rotation lever 5 is extended. When the protruding portion 28a is brought into contact with the pedal body 2 and the pedal body 2 is oscillated and displaced, the pedal body 2 is pulled toward the center side in the vehicle width direction along the notch portion 31, thereby There is an advantage that it is possible to more effectively prevent the occurrence of a situation in which the pedal body 2 released from the restraint by the pedal bracket 3 is caught by the vehicle body constituent member due to a large lateral movement.

  In the above-described embodiment, the upper part of the pedal body 2 is moved to the rear side of the vehicle body by bringing the backward movement means comprising the extending portion 28a of the rotating lever 5 into contact with the pedal body 2. Instead, there is provided a rearward movement means composed of a tension coil spring or the like that urges the upper end of the pedal body 2 toward the rear side of the vehicle body, and the first support shaft 13 falls off from the support portion of the pedal bracket 3 when the vehicle collides. Immediately after the operation, the tension coil spring is used to drive the upper part of the pedal body 2 to the rear side of the vehicle body. In response to this, the pedal depression 34 provided at the lower end of the pedal body 2 is moved to the vehicle body. You may comprise so that it may move to the front side.

  Moreover, in the said embodiment, as shown in FIG. 9, the said support part 20 is comprised by the protrusion part which protrudes toward the back part side from the front part of the opening part 19 provided in the downward direction of the support hole 14, and vehicle At the time of collision, the support portion 20 is plastically deformed starting from the base end portion (front end portion) of the support portion 20, and the inclined groove portion 15 expanded according to the plastic deformation of the support portion 20, that is, the support portion 20. Since the first support shaft 13 is configured to drop downward from the support hole 14 through a guide portion disposed on the rear side of the first support shaft 13, the driving direction of the first support shaft 13 by the rotating lever 5 (see arrow) And by making this drop direction of the first support shaft 13 coincide, there is an advantage that the first support shaft 13 can be easily dropped from the support hole 14 at the time of a vehicle collision.

As shown in FIG. 10, an inclined groove portion 15a communicating with the support hole 14 is formed in the front portion of the opening portion 19 provided below the support hole 14, and a notch portion 16a is formed on the rear side thereof. For example, when the vehicle collides, a base end portion (rear end portion) of the support portion 20 is provided at the time of a vehicle collision. The support portion 20 may be plastically deformed at the starting point so that the first support shaft 13 is dropped from the support hole 14 downward. In the case of such a configuration, it is not necessary to provide an inclined groove portion communicating with the support hole 14 at the rear portion of the support portion 20 to which a reaction force when swinging the pedal body 2 is normally applied. Occurrence of the adverse effect caused by the inclined groove portion being formed in the rear portion of the support portion 20, that is, the situation where the support state of the first support shaft 13 becomes unstable and the operational feeling of the pedal body 2 deteriorates. There is an advantage that can be effectively prevented.

  Moreover, in the said embodiment, the other side part (back part) rather than the center part of the 1st spindle 13 from the one side part (front part or back part) of the said opening part 19 which accept | permits the downward movement of the 1st spindle 13 is demonstrated. Alternatively, the support portion 20 of the first support shaft 13 is formed by the protrusion portion protruding toward the front portion), and the support portion 20 is configured to cover substantially the entire upper end portion of the opening portion 19. Thus, there is an advantage that the operation state of the pedal body 2 can be maintained well by effectively stabilizing the support state of the first support shaft 13 in a normal state.

  Furthermore, in the said embodiment, the said protrusion part is formed by forming the notch part 16 extended in the diagonal direction toward the support hole 14 in the base end part of the protrusion part which comprises the support part 20 of the 1st spindle 13. As shown in FIG. Therefore, when the vehicle collides, the support portion 20 can be efficiently plastically deformed to easily drop the first support shaft 13 from the support hole 14.

  In particular, in the above-described embodiment, the deformation of the support portion 20 is deformed by detachably inserting the deformation suppressing portion including the reinforcing portion 30 protruding from the rotation lever 5 into the notch portion 16 of the pedal bracket 3. Is suppressed by the reinforcing portion 30, so that the first support shaft 13 can be stably supported by preventing plastic deformation of the support portion 20 during normal times, and the notch portion can be used in the event of a vehicle collision. By detaching the reinforcing portion 30 from 16, the support portion 20 can be easily plastically deformed and the first support shaft 13 can be reliably dropped from the support hole 14.

  The reinforcing portion 30 detachably inserted into the notch portion 16 can be provided separately from the rotating lever 5, but protrudes from the rotating lever 5 as described above. When the reinforcing portion 30 is configured to be removably inserted into the notch portion 16 of the pedal bracket 3, the deformation of the support portion 20 can be suppressed by the reinforcing portion 30 at a normal time with a simple configuration. There is an advantage that the support portion 20 can be easily plastically deformed by detaching the reinforcing portion 30 from the notch portion 16 in the event of a vehicle collision.

  Further, in the above-described embodiment, before the first support shaft 13 is pushed downward via the turning lever 5 in the event of a vehicle collision, the reinforcing portion 30 is supported according to the turning displacement of the turning lever 5. Since the support portion 20 is configured to be separated from the portion 20, the support portion 20 can be reinforced by the reinforcement portion 30 to prevent deformation of the support portion 20 in a normal state, and the reinforcement portion 30 is notched due to a vehicle collision. When the support part 20 is easily plastically deformed when it is led out of the part 16 and separated from the support part 20, the first support shaft 13 can be easily dropped from the support part. Therefore, in a normal traveling state, the first support shaft 13 is held in a stable support state, so that the feeling of operation when the pedal body 2 is swung with the first support shaft 13 as a fulcrum is improved. In addition to being able to maintain and at the time of a vehicle collision, the support portion 20 can be more easily plastically deformed and the first support shaft 13 can be easily dropped from the support portion than when the notch portion 16 is omitted. Can do.

  As shown in FIG. 11, a pair of front and rear projections 37 are provided opposite to the upper end of the opening 19 formed in the lower part of the support hole 14 where the first support shaft 13 is supported. The support portion composed of the portion 37 restricts the downward movement of the first support shaft 13 in a normal state, and causes the protrusion 37 to be plastically deformed or elastically deformed according to the rotational displacement of the rotational lever 5 in the event of a vehicle collision. Thus, the first support shaft 13 may be allowed to fall below the support hole 14. According to this configuration, while simplifying the structure of the pedal bracket 3, the first support shaft 13 can be held in a stable support state in a normal traveling state, and the support portion 20 can be used in the event of a vehicle collision. The first support shaft 13 can be easily detached from the support portion by plastic deformation.

  In the embodiment described above, the first support shaft 13 is introduced into the left and right outer plates 11, 11 through the opening 19 immediately after the first support shaft 13 is dropped, thereby introducing the first support shaft 13. Since the pedal body 3 is released from the pedal bracket 3, the restraint state of the pedal body 2 by the pedal bracket 3 is released, so that the driver's feet are placed on the pedal stepping portion 34 provided at the lower end portion of the pedal body 2. When an accident occurs in the state where the pedal is placed, an excessive load acts on the driver's foot due to the pedal stepping portion 34 being pushed to the rear side of the vehicle body together with the pedal body 2. There is an advantage that can be effectively prevented.

  Further, as shown in the above embodiment, the pair of left and right vertical plates 9 constituting the pedal bracket 3 are provided with support holes 14 for the first support shaft 13 and provided at both left and right ends of the first support shaft 13. When the left and right end portions of the first support shaft 13 are attached to the pedal bracket 3 by pressing the fixing portions (the nut 22 and the bolt head portion 23) to the peripheral portion of the support hole 14, the normal Sometimes, the first support shaft 13 can be stably supported by the pedal bracket 3, and the first support shaft 13 detached from the support portion at the time of a vehicle collision is moved downward along the vertical plate 9. Thus, there is an advantage that it is possible to effectively prevent occurrence of a situation where the pedal bracket 3 is caught.

  In particular, in the above embodiment, the pair of left and right outer plates 11 are provided below the support portion of the first support shaft 13, that is, below the vertical plate 9 in which the support hole 14 is formed. When the fixed portion of the first support shaft 13 that has fallen downward from the support portion is introduced between the outer plates 11, the lateral movement of the first support shaft 13 is controlled by the lateral movement restricting portion made of the outer plate 11. Since the amount is restricted to a certain value or less, the occurrence of a situation where the first support shaft 13 detached from the support hole 14 is caught by the pedal bracket 3 due to a large lateral movement is more effectively prevented. Can be prevented.

Further, as shown in the embodiment, a pair of left and right inclined plates 12 extending obliquely toward the inner side in the vehicle width direction below the outer plate 11 serving as a lateral movement restricting portion of the first support shaft 13. when was provided, at the time of collision of the vehicle, in accordance with the first support shaft 13 which is off from the support portion of the pedal bracket 3 is moved downward, by the lateral movement restricting portion comprising the lateral movement allowable range of the inclined plate 12 Even if the pedal body 2 temporarily moves laterally after the restraint of the pedal body 2 by the pedal bracket 3 is released, the pedal body 2 moves downward. Accordingly, the lateral movement state can be gradually corrected. Therefore, there is an advantage that it is possible to effectively prevent the occurrence of a situation in which the pedal body 2 released from the restraint by the pedal bracket 3 is caught on the vehicle body constituent member due to a large lateral movement.

Immediately after the first support shaft 13 is removed, the fixing portion of the first support shaft 13 is introduced into the left and right outer plates 11 through the opening 19 so that the first support shaft 13 is connected to the pedal bracket. In place of the above-described embodiment configured to be detached from 3, an opening 19a made of a guide groove extending from the lower end of the support hole 14 to the rear side of the vehicle body may be formed as shown in FIG. When the vehicle collides, as shown in FIG. 13, the rear end portion of the turning lever 5 is brought into contact with the vehicle body side member composed of the instrument panel reinforcement 32 and the turning lever 5 is turned. By pushing the first support shaft 13 downward, the support portion including the projection 37 provided at the upper end of the opening 19a is deformed and dropped from the support hole 14, and the rotating lever 5 Thus, the first support shaft 13 may be guided to the rear side of the vehicle body along the opening 19a by, for example, pushing the upper portion of the pedal body 2 backward. In such a configuration, the pedal provided at the lower end portion of the pedal body 2 by moving the upper end portion of the pedal body 2 to the rear side of the vehicle body without detaching from the pedal bracket 3 at the time of a vehicle collision. By largely moving the stepping portion 34 to the front side of the vehicle body, there is an advantage that the load input from the pedal stepping portion 34 to the driver's foot portion can be effectively reduced.

It is a side view which shows embodiment of the support structure of the operation pedal which concerns on this invention. It is a disassembled perspective view which shows the specific structure of the support structure of the said operation pedal. It is a side view which shows the support state of the pedal main body in the normal time. It is front sectional drawing which shows the specific structure of the support structure of the said operation pedal. It is a side view which shows the support state of the pedal main body in the collision initial stage. It is a side view which shows the state which the 1st spindle fell off. It is front sectional drawing which shows the state of the pedal main body in the latter stage of a collision. It is a front view which shows the state of the pedal main body in the latter stage of a collision. It is explanatory drawing which shows the specific structure of the support part which supports the lower end part of a 1st spindle. It is explanatory drawing which shows another specific example of the support part which supports the lower end part of a 1st spindle. It is explanatory drawing which shows another specific example of the support part which supports the lower end part of a 1st spindle. It is explanatory drawing which shows another embodiment of the support structure of the operation pedal which concerns on this invention. It is explanatory drawing which shows the displacement state of the pedal main body in the said embodiment.

DESCRIPTION OF SYMBOLS 1 Dash panel 2 Pedal body 3 Pedal bracket 5 Rotating lever 9 Vertical plate 10 Horizontal plate 11 Outer plate (lateral movement control part)
12 Inclined plate (lateral movement restricting part)
13 First spindle 15 Inclined groove (guide part)
17 Second support shaft 19 Opening portion 20 Support portion 22 Nut (fixed portion)
23 Bolt head (fixed part)
28a Extension part (backward movement means)
30 Reinforcing part 38 Cover plate (interference suppression part)

Claims (9)

A support structure for an operation pedal that is pivotally supported by the dash panel and swings in the front-rear direction of the vehicle body. The pedal bracket is attached to the dash panel and extends to the rear side of the vehicle body, and is installed on the pedal bracket. A pedal body that is swingably supported via a pedal support shaft that extends in the vehicle width direction, and a swingable support that is supported by a lever support shaft that is installed in the pedal bracket and extends in the vehicle width direction. A pivot lever formed separately from the pedal support shaft, the pedal bracket is provided with a support hole for the pedal support shaft, and an opening for allowing downward movement of the pedal support shaft is provided below the support hole. at the upper end of the opening is provided a support portion for supporting the pedal support shaft from below, turning the rotating lever during a collision of the vehicle may interfere with the vehicle body-side member of the lever support shaft as a fulcrum By coordinating it, while pushing the pedal pivot downward, the operating pedal, characterized in that it is configured to drop out of the pedal shaft by deforming the support portions below the supporting hole supporting structure . The support portion of the pedal support is configured by a projecting portion that protrudes from the one side portion of the opening that allows the pedal support shaft to move downward toward the other side portion from the center portion of the pedal support shaft. Item 4. The operation pedal support structure according to Item 1. 3. The operation pedal support according to claim 2 , wherein a support portion of the pedal support shaft is constituted by a protruding portion that protrudes from the front portion of the opening portion that allows the pedal support shaft to move downward toward the rear portion side. Construction. 4. The operation pedal support structure according to claim 3, wherein a notch for promoting plastic deformation of the protrusion is formed at a base end of the protrusion constituting the support portion of the pedal support shaft. A deformation suppressing portion that suppresses plastic deformation of the protruding portion in a normal running state by being detachably inserted into a notch portion formed at the base end portion of the protruding portion that supports the pedal support shaft. The support structure for an operation pedal according to claim 4. 6. The operation pedal support structure according to claim 5, wherein the deformation suppressing portion that is removably inserted into the notch portion is provided on a rotating lever . 7. The structure according to claim 6, wherein the deformation restraining portion of the turning lever is detached from the notch portion before the pedal support shaft is pushed downward by the turning lever when the vehicle collides. The operation pedal support structure described. 2. The operation pedal support structure according to claim 1 , wherein a support portion of the pedal support shaft is configured by a pair of front and rear projections provided at an upper end portion of an opening portion that allows the pedal support shaft to move downward . The structure according to any one of claims 1 to 8, wherein the pedal body is detached from the pedal bracket immediately after the pedal support shaft drops downward from a support hole provided in the pedal bracket at the time of a vehicle collision. The operation pedal support structure according to Item .

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