JP2008001281A - Support structure for operation pedal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support structure for an operation pedal capable of securely regulating dropping of a pedal in normal time and of securely preventing retreat of the pedal at the time of vehicle collision. <P>SOLUTION: The support structure for the operation pedal is provided with a pedal main body swingably supported via a first support shaft supported by a pedal bracket; a rotating member swingably supported via a second support shaft supported by the pedal bracket and rotated around the second support shaft so as to enable downward displacement of the first support shaft at the time of vehicle collision; and a dropping regulating member positioned below the first support shaft, swingably supported by the pedal bracket in one end side and engaged with the rotating member in the other side, so as to regulate downward displacement of the first support shaft when downward load is applied to the pedal main body. At the time of vehicle collision, along with the rotation of the rotating member, the dropping regulating member is retreated from the lower direction of the first support shaft and displacement regulation of the first support shaft is released. At the time of application of downward load to the pedal main body, in the other side engaged with the rotating member, the dropping regulating member applies energizing force reverse to the direction of the downward displacement of the first support shaft by the rotating member. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

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

  A pedal body, such as a brake pedal or a clutch pedal, that is swung in the vehicle longitudinal direction is supported by a dash panel via a pedal bracket. That is, the pedal bracket is fixed to the dash panel, and the pedal body is swingably held in the front-rear direction with respect to the pedal bracket via the first support shaft extending in the vehicle width direction on the upper end side thereof, It is stepped on by the occupant at the lower end. Such a pedal body is required not to move largely rearward particularly at the lower end side in order to protect the occupant's foot during a vehicle collision (front collision).

  As a technique for meeting such a demand, for example, in Patent Document 1 below, a pivot lever is held swingably by a second support shaft that extends in the vehicle width direction with respect to a pedal bracket, so When the lever abuts on the vehicle body side member, the lever is rotated around the second support shaft, and the first support shaft supporting the pedal body is forcibly displaced rearward by the rotation of the rotation lever. It has been proposed to let Further, for example, in Patent Document 2 below, a rotation shaft serving as 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 vehicle rear side when the vehicle collides. In such a pedal support structure, a spring urging force is used to hold the rotating shaft in the upper initial position. Further, for example, in Patent Document 3 below, there is disclosed a mechanism that disengages the pedal body from the pedal bracket by expanding and deforming the pedal bracket that holds the support shaft of the pedal body in the vehicle width direction in the event of a vehicle collision. Yes.

JP 2005-510785 A Japanese Patent No. 3269372 European Patent Application No. 0659615

  In those described in Patent Documents 1 and 2 described above, the support shaft of the operation pedal is prevented from dropping during normal operation, but when a large downward load is applied due to the pedal depression operation by the driver. There is a risk that the support pedal shaft will fall off. Moreover, in what was described in patent document 3, when the pedal body is inclined due to an oblique load applied when the pedal bracket is expanded and deformed at the time of a vehicle collision, the pedal bracket of the pedal body is removed. It will be difficult to ensure a secure departure.

  The present invention has been made in view of the above technical problem, and can normally prevent inadvertent dropping of the pedal body at normal times and reliably prevent the pedal body from retreating in the event of a vehicle collision. An object of the present invention is to provide a support structure for an operation pedal that can be used.

  Accordingly, the invention according to claim 1 of the present application is a pedal structure provided on the rear side of the dash panel and operated to swing in the vehicle front-rear direction. The pedal is attached to the dash panel and extends to the rear side of the vehicle body. A bracket, a pedal bracket provided with a support portion for supporting a first support shaft and a second support shaft extending in the vehicle width direction, and swingable via a first support shaft supported by the pedal bracket It is supported by the pedal body supported by the pedal bracket and the second support shaft supported by the pedal bracket so as to be swingable. When the vehicle collides, it interferes with the vehicle body side member to rotate around the second support shaft. A rotation lever that is dynamically displaced and allows the first support shaft to be displaced with respect to the pedal bracket by pushing down the first support shaft; and a position of the rotation lever that is positioned below the first support shaft. The first support shaft when a downward load is applied to the pedal body by engaging the pivot lever at the other end while being pivotally supported by the pedal bracket at one end side. And a drop-off restricting member that restricts the downward displacement of the first support shaft, and the drop-off restricting member retracts from the lower side of the first support shaft as the turning lever rotates in the event of a vehicle collision. While the restriction on the support shaft is released, when a downward load is applied to the pedal body, the drop-off restricting member is engaged with the turning lever at the other end, and the turning lever is in the first position. It is characterized in that a force for urging the one support shaft in a direction opposite to the downward direction is applied to the rotating lever.

  The invention according to claim 2 of the present application is the invention according to claim 1, wherein the drop-off restricting member includes an extension portion extending rearward of the vehicle on the other end side engaged with the rotating lever. The rotating lever includes a protruding portion extending in the vehicle width direction so as to be engaged while supporting the extending portion, and when the vehicle collides, the protruding portion is extended with the rotation of the rotating lever. By displacing so as to be disengaged from the protruding portion, the drop-off restricting member is retracted from below the first support shaft, and when a downward load is applied to the pedal body, the load is Acting on the drop-off restricting member via the first support shaft, the extending portion is displaced while urging the projecting portion, so that the rotation lever pushes the first support shaft downward. It is characterized by being energized.

  Further, the invention according to claim 3 of the present application is the invention according to claim 2, wherein a surface of the extension part of the drop-out restricting member that engages with the protruding part of the turning lever faces downward from the drop-out restricting member. When the above load is applied, the extending portion is inclined so as to be displaced while urging the protruding portion.

  Furthermore, the invention according to claim 4 of the present application is the invention according to claim 2, wherein the protruding portion of the rotating lever is positioned below the front side of the second support shaft, and the extension regulating member extends. It is provided so that it may engage with a protrusion part.

  Furthermore, the invention according to claim 5 of the present application is the first support shaft support portion provided in the pedal bracket according to any one of claims 1 to 4, wherein the first support shaft is normally used. While the downward displacement of the support shaft is restricted, a restricting portion is provided that allows the first support shaft to drop downward according to the rotational displacement of the turning lever in the event of a vehicle collision. It is a thing.

  Furthermore, the invention according to claim 6 of the present application is configured such that, in the invention according to claim 5, the pedal body is detached from the pedal bracket immediately after the first support shaft is detached from the support portion. It is characterized by that.

  According to the invention of claim 1 of the present application, the pedal main body is dropped by releasing the restriction on the displacement of the first support shaft at the time of a vehicle collision. When a large downward load is applied, a force that urges the pivot lever in the direction opposite to the direction in which the first support shaft is pushed down acts on the pivot lever, thus ensuring reliable support of the pedal body against the load. can do.

  According to the invention of claim 2 of the present application, when the vehicle collides, the protruding portion is displaced so as to be disengaged from the extending portion as the rotating lever rotates, so that the drop-out restricting member is The pedal body is removed by being retracted from below the first support shaft and the displacement restriction of the first support shaft is released. On the other hand, when a downward load is applied to the pedal body, the load is reduced. It acts on the drop-off restricting member via the first support shaft, and the extension portion is displaced while urging the projecting portion, so that the rotating lever pushes the first support shaft downward. It is urged | biased to direction and the positive support of the pedal body with respect to a load is realizable.

  Further, according to the invention according to claim 3 of the present application, when a downward load is applied to the pedal body, the surface of the extension portion of the drop-off restricting member that engages with the protruding portion of the rotating lever is applied to the pedal body. The extension portion is inclined so as to be displaced while urging the protruding portion, whereby the same effect as that of the invention according to claim 1 can be obtained.

  Further, according to the invention of claim 4 of the present application, the position where the protruding portion of the rotating lever and the extending portion of the drop-out restricting member engage with each other is set to the lower front side of the second support shaft. Thus, the same effect as that of the first aspect of the invention can be achieved.

  Further, according to the invention according to claim 5 of the present application, the first support shaft is controlled in accordance with the rotational displacement of the rotary lever at the time of a vehicle collision while the downward displacement of the first support shaft is restricted during a normal time. By providing the restricting portion that allows the lower part to fall off, it is possible to restrict the downward displacement of the first support shaft during normal times.

  Further, according to the invention of claim 6 of the present application, the pedal body can be reliably prevented from retreating with a simple configuration in which the pedal body is detached from the pedal bracket immediately after the first support shaft is detached.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
(Embodiment 1)
FIG. 1 is a side view of a brake pedal support structure according to Embodiment 1 of the present invention. In FIG. 1, a brake booster 2 and a pedal bracket 10 that swingably supports a brake pedal 3 in the vehicle front-rear direction are attached to a dash panel 1 that partitions an engine room and a vehicle compartment. The brake pedal 3 extends obliquely downward from the support shaft toward the inner side in the vehicle width direction, and a pedal stepping portion 3a is provided at the lower end thereof. A pivot lever 20 is pivotally supported on the pedal bracket 10 so as to drop the support shaft of the brake pedal 3 downward from the pedal bracket 10 in the event of a vehicle front collision. The brake booster 2 is connected to the brake pedal 3 via a push rod 2a. An instrument panel reinforcement 5 made of a pipe for supporting a steering column is disposed on the rear side of the rotation lever 20, and the instrument panel reinforcement 5 includes a rotation lever 20 at a normal time. A vehicle body side member 5a facing the rear end portion by a predetermined distance is provided.

  2 and 3 are an exploded perspective view of the support structure of the brake pedal 3 and a side view of the support structure of the brake pedal 3 in a normal state, respectively. The pedal bracket 10 basically includes a mounting board 11 that is bolted to the dash panel 1 and a pair of left and right side plates 12 that extend rearward from the left and right edge portions of the mounting board 11. Each side plate 12 is formed with a circular first support hole 13a for inserting and supporting the first support shaft 40 of the brake pedal 3 extending in the vehicle width direction. And the peripheral part of each 1st support hole 13a comprises the support part 13 for supporting the 1st spindle 40, respectively.

  In the present embodiment, as the first support shaft 40, a bolt in which a screw 40a is cut at one end and a bolt head 40b is provided at the other end is employed. The screw 40a is cut so as to be positioned on the outer side in the vehicle width direction from the outer surface of the right side plate after the first support shaft 40 is attached to the pedal bracket 10. Then, with the first support shaft 40 inserted through each first support hole 13a and the insertion hole 3c formed in the boss 3b on the upper end side of the brake pedal 3, the nut 41 is inserted into the screw 40a of the first support shaft. The brake pedal 3 is supported by the pedal bracket 10 so as to be swingable about the first support shaft 40 by being screwed through the washer 42. Further, according to the configuration of the screw 40 a and the washer 42, it is possible to prevent the screw 40 a from damaging the support portion 13 of the pedal bracket 10 when a load is applied to the first support shaft 40 when the brake pedal 3 is operated. it can.

  Furthermore, an opening 13b having a width smaller than the shaft diameter of the first support shaft 40 is formed below the first support hole 13a of each support portion 13, and protrudes to the rear and front of the vehicle, respectively. A pair of front and rear projections 13c (regulators) facing each other through the opening 13b is disposed. Each projection 13c supports the first support shaft 40 during normal times other than the time of a vehicle front collision and restricts its downward drop. The first support shaft 40 is deformed by being pushed downward to allow the first support shaft 40 to drop off. A notch portion 14 having a width larger than the shaft diameter of the first support shaft 40 is formed below the opening 13 b of each support portion 13. Moreover, in this embodiment, the protrusion pin 18 is provided in the vehicle width direction inner side from the side plate inner surface at the front lower side of the first support hole 13a of each side plate 12.

  In addition, as can be clearly seen from FIG. 2, a second circular shape for inserting and supporting the second support shaft 50 of the rotation lever 20 extending in the vehicle width direction is provided behind the first support hole 13 a of each side plate 12. Support holes 15 are formed. As the second spindle 50, a bolt in which a screw 50a is cut on one end side and a bolt head 50b is provided on the other end side is employed. Then, in a state where the second support shaft 50 is inserted into each second support hole 15 and each insertion hole 21 a formed in the rotation lever 20, a nut (not shown) is attached to the screw 50 a of the second support shaft 50. By screwing, the rotation lever 20 is supported by the pedal bracket 10 so as to be rotatable about the second support shaft 50.

  The rotary lever 20 is formed in a substantially U-shaped cross section, and extends along the inner surface of each side plate 12 of the pedal bracket 10, and a circular insertion hole 21 a for the second support shaft 50 is formed at the lower end. A pair of left and right side plates 21 and a top plate 22 for connecting upper end edges of both side plates 21 to each other are provided. In the rotating lever 20, an arc portion 21b formed in an arc shape is formed in a portion of each side plate 21 facing the first support shaft 40 (strictly, the boss portion 3b of the brake pedal 3). In the assembled state, the rotating lever 20 is set so that each arc portion 21b is positioned with a slight clearance with respect to the outer peripheral surface of the cylindrical boss portion 3b. Further, a protruding pin (protruding portion) 23 that protrudes outward in the vehicle width direction is provided in the vicinity of the lower end portion of each side plate 21. Further, a bent portion 22a is formed at the lower end portion of the top plate 22, and the bent portion 22a abuts on a stopper 12a provided on the side plate 12 of the pedal bracket 10, so that the rotating lever 20 rotates clockwise. The rotation of is controlled.

  Furthermore, in this embodiment, in order to prevent the brake pedal 3 from being inadvertently dropped when a relatively large load is applied to the brake pedal 3 when the pedal is depressed by the driver, for example, 30 is adopted. The drop-off restricting member 30 has a substantially U-shaped cross section, and a pair of left and right side plates 31 extending along the inner surface of each side plate 12 of the pedal bracket 10 and the outer surface of each side plate 21 of the rotating lever 20, respectively. And a connecting portion 32 that connects the lower end edges of the side plates 31 to each other.

  Each side plate 31 of the drop-off restricting member 30 is formed with an insertion hole 33 through which the first support shaft 40 is inserted. In the present embodiment, a hole having a diameter larger than the shaft diameter of the first support shaft 40 is formed as the insertion hole 33. In the assembled state, each side plate 31 of the drop-off restricting member 30 is disposed along the left and right end surfaces of the boss portion 3b so that the insertion hole 33 corresponds to the insertion hole 3c formed in the boss portion 3b of the brake pedal 3. The Rukoto.

  In addition, a pin receiving portion 34 that engages with the protruding pin 18 provided on the inner surface of the side plate of the pedal bracket 10 from above is provided in front of the lower end of the drop-off restricting member 30. During normal operation, the pin receiving portion 34 and the projecting pin 18 are engaged with each other, so that the drop-off restricting member 30 is swingably supported by the pedal bracket 10. Further, an extension portion 35 that engages with the protruding pin 23 provided on the outer surface of the side plate of the rotation lever 20 from above is provided behind the lower end of the drop-off restricting member 30. In the extended portion 35, a lower side surface (hereinafter referred to as an engagement surface) 35 a that engages with the protruding pin 23 is inclined so as to be positioned downward as it is positioned rearward of the vehicle.

  As shown in FIG. 3, in the normal state, the first support shaft 40 is inserted and supported by the first support hole 13 a, and the rotating lever 20 has an arc portion 21 b on the outer peripheral surface of the boss portion 3 b of the brake pedal 3. On the other hand, it is set so as to be located through a slight clearance. Further, the drop-off restricting member 30 is supported at one end side so that the pin receiving portion 34 engages with the projecting pin 18 on the pedal bracket 10 side so as to be swingable, while the extension portion is provided at the other end side. 35 is supported by engaging the protruding pin 23 on the rotating lever 20 side.

Hereinafter, the operation of the support structure for the brake pedal 3 will be described.
FIG. 4 is a side view of the support structure of the brake pedal 3 when a downward load is applied to the brake pedal 3. First, when a downward load is applied to the brake pedal 3, the first support shaft 40 is pulled downward together with the boss portion 3 b of the brake pedal 3. Accordingly, the projection 13c of the pedal bracket 10 is deformed, and the opening 13b is expanded and deformed. Then, the first support shaft 40 is slightly displaced downward together with the boss portion 3 b of the brake pedal 3. At this time, as shown in FIG. 4, the first support shaft 40 comes into contact with the lower peripheral edge portion of the insertion hole 33 formed in the drop-out restricting member 30 and pushes the drop-out restricting member 30 downward. As a result, a downward load is applied to the extension portion 35 of the drop-off restricting member 30, and the extension portion 35 is displaced while urging the protruding pin 23 downward, so that the rotating lever 20 is moved to the brake pedal. 3 is biased in the direction opposite to the direction in which the boss 3b and the first support shaft 40 are pushed downward (the direction indicated by the arrow D1) (as described above, the stopper 12a causes the rotating lever 20 to rotate clockwise. Rotation is regulated). This prevents a load from being applied to the boss portion 3b of the brake pedal 3 from the turning lever 20. During this time, the drop-off restricting member 30 is supported by the projecting pins 18 and 23 in the front and rear of the vehicle, and the first support shaft 40 is held in the insertion hole 33 of the drop-off restricting member 30, so that the brake pedal 3 is prevented from falling off.

  As described above, the engaging surface 35a of the extending portion 35 is inclined so as to be positioned downward as it is positioned rearward of the vehicle. Specifically, the engaging surface 35a is configured to be a drop-off regulating member. When a downward load is applied to 30, the extending portion 35 is inclined so as to be displaced while urging the protruding pin 23.

  In this way, when a relatively large downward load is applied to the brake pedal 3, for example, when the pedal is depressed, an urging force opposite to the direction in which the rotation lever 20 pushes down the first support shaft 40 is rotated. Since it acts on the lever 20, it is possible to realize reliable support of the brake pedal against the load.

  Next, the operation of the support structure for the brake pedal 3 at the time of a vehicle front collision will be described. FIGS. 5 and 6 are a side view of the support structure of the brake pedal 3 in the initial stage at the time of a vehicle front collision, and a side view of the support structure of the brake pedal 3 in a state where the first support shaft 40 of the brake pedal 3 is dropped. FIG. At the time of a frontal collision of the vehicle, the dash panel 1 (see FIG. 1) and the pedal bracket 3 move to the rear of the vehicle, and the rear end portion of the side plate 21 of the turning lever 20 contacts the vehicle body side member 5a. Accordingly, the rotation lever 20 rotates about the second support shaft 50 in the direction (counterclockwise) indicated by the symbol D2. 5 and 6, the rear end portion of the turning lever 20 before turning is indicated by a one-dot chain line. As the pivot lever 20 pivots, the arc portion 21b pushes the boss portion 3b of the brake pedal 3 downward, whereby the first support shaft 40 is pushed downward.

  When the first support shaft 40 is displaced downward, the projection 13c of the pedal bracket 10 is deformed and the opening 13b is expanded and deformed as shown in FIG. At the same time, the projecting pin 23 of the turning lever 20 is displaced rearward of the vehicle and is disengaged from the extending portion 35 of the drop-off restricting member 30. As a result, the support of the first support shaft 40 by the support portion 13 is released, and the engagement support of the drop-off restricting member 30 by the protruding pin 23 is released. As a result, the drop-off restricting member 30 of the first support shaft 40 is released. Retracting from below, the first support shaft 40 falls off the pedal bracket 10 as shown in FIG. As a result, the brake pedal 3 falls off.

  In the present embodiment, since the engaging surface 35a of the extending portion 35 of the drop-off restricting member 30 is inclined, the first support shaft 40 is dropped when the turning lever 20 is turned to the symbol D2. In the stroke up to this point, a force is applied in the direction in which the drop-off restricting member 30 is lifted. By forming, a predetermined clearance is ensured, and it is possible to prevent the first support shaft 40 from being lifted as the drop-off restricting member 30 is lifted.

  In this way, when the vehicle is in front of the vehicle, the drop-out restricting member 30 and the first support shaft 40 drop off as the turning lever 20 turns, so that the brake pedal 3 drops out. Can be prevented. In the present embodiment, the engaging portion between the projecting pin 23 and the engaging surface 35a of the extending portion 35 is a straight line connecting the engaging portion and the engaging portion between the protruding pin 18 and the pin receiving portion 34. When the load is applied to the brake pedal 3 in a downward direction with respect to the straight line that intersects the straight line at right angles and passes through the center of the second support shaft 50, a downward load is applied to the brake pedal 3. A clockwise biasing force will act.

(Embodiment 2)
Next, with reference to FIGS. 7 and 8, a support structure for the brake pedal 3 that employs a pivot lever and a drop-off restricting member that are different from those in the first embodiment will be described. In the following, the same components as those in the first embodiment described above are denoted by the same reference numerals, and further description thereof is omitted.

  7 and 8 are an exploded perspective view of the support structure for the brake pedal 3 according to the second embodiment and a side view of the support structure for the brake pedal 3 in a normal state, respectively. In this embodiment, the rotating lever 60 extends along the inner surface of each side plate 12 of the pedal bracket 10 and has a pair of left and right side plates 61 each having a circular insertion hole 61a for the second support shaft 50 formed at the lower end. And a top plate 62 that connects the upper edge portions of the side plates 61 to each other. In the rotating lever 60, an arc portion 61b formed in an arc shape is formed at a portion of each side plate 61 facing the first support shaft 40 (strictly speaking, the boss portion 3b of the brake pedal 3). In the assembled state, the rotation lever 60 is set so that each arc portion 61b is positioned with a slight clearance with respect to the outer peripheral surface of the cylindrical boss portion 3b. In addition, a protruding portion 63 that protrudes outward in the vehicle width direction is provided at the lower end portion of each side plate 61. The protrusion 63 is positioned below the front side of the insertion hole 61a for the second support shaft 50. Further, the lower end portion of the top plate 62 is in contact with the stopper 12a provided on the side plate 12 of the pedal bracket 10 in the same manner as the bending lever 22a of the rotating lever 20 in the first embodiment described above, and the rotating lever 20 Is formed with a bent portion 62a that restricts clockwise rotation.

  On the other hand, the drop-off restricting member 70 connects a pair of left and right side plates 71 extending along the inner surface of each side plate 12 of the pedal bracket 10 and the outer surface of each side plate 61 of the rotating lever 60 and the lower edge of both side plates 71 to each other. And a connecting portion 72. Each side plate 71 of the drop-off restricting member 70 is formed with an insertion hole 73 through which the first support shaft 40 is inserted. In the assembled state, each side plate 71 of the drop-off restricting portion 70 is disposed along the left and right end surfaces of the boss portion 31 so that the insertion hole 73 corresponds to the insertion hole 3c formed in the boss portion 3b of the brake pedal 3. The Rukoto.

  In addition, a pin receiving portion 74 is provided at the front end portion of the drop-out restricting member 70 so as to sandwich and engage the protruding pin 19 provided on the inner surface of the side plate of the pedal bracket 10. During normal operation, the pin receiving portion 74 and the protruding pin 19 engage with each other, so that the drop-off restricting member 70 is swingably supported by the pedal bracket 10. Further, an extension portion 75 that engages with a protrusion 63 provided on the outer surface of the side plate of the rotation lever 60 from above is provided behind the lower end of the drop-off restricting member 70.

  As shown in FIG. 8, in the normal state, the first support shaft 40 is inserted and supported by the first support hole 13a, and the rotating lever 60 has an arc portion 61b on the outer peripheral surface of the boss portion 3b of the brake pedal 3. On the other hand, it is set so as to be located through a slight clearance. Further, the drop-out restricting member 70 is supported at one end side so that the pin receiving portion 74 engages with the protruding pin 19 on the pedal bracket 10 side so as to be swingable, while at the other end side, the extension portion is provided. 75 is supported by engaging the protrusion 63 on the rotating lever 60 side. In the present embodiment, as described above, in the rotating lever 60, the protruding portion 63 is provided so as to be positioned below the front side of the insertion hole 61 a for the second support shaft 50. The portion 75 is engaged with each other on the lower front side of the second support shaft 50.

  Regarding the support structure of the brake pedal 3 having such a configuration, the operation when a downward load is applied to the brake pedal 3 and the operation at the time of a frontal collision of the brake pedal 3 according to the first embodiment are shown in FIGS. The operation is the same as that described with reference to FIG.

It should be noted that the present invention is not limited to the illustrated embodiments, and it goes without saying that various improvements and design changes can be made without departing from the scope of the present invention.
In the above-described embodiment, if the downward displacement of the first support shaft 40 can be regulated, the first support shaft 40 is not inserted and supported. For example, in the vehicle front-rear direction below the first support shaft 40 A drop-out restricting member having another shape, such as a drop-out restricting member that supports the first support shaft 40 by extending in the direction, may be employed. Further, in the above-described embodiment, as the rotation lever 20 is rotated, the boss 3b of the brake pedal 3 is pushed downward, and at the same time, the disengagement restriction members 30 and 70 are disengaged. A predetermined amount of clearance is set between the boss portion 3b and the arc portion 21b of the turning lever, and the turning lever 20 pushes the boss portion 3b downward after the engagement of the drop-off restricting members 30 and 70 is released. May be. Furthermore, in the above-described embodiment, the example in which the present invention is applied to the support structure of the brake pedal 3 has been taken up. However, the present invention is not limited to this, and the present invention can be applied to other accelerator pedals, clutch pedals, and the like. The same applies to the operation pedal.

It is a side view of the support structure of a brake pedal concerning Embodiment 1 of the present invention. It is a disassembled perspective view of the support structure of the said brake pedal. It is a side view of the support structure of the above-mentioned brake pedal at the normal time. It is a side view of the support structure of a brake pedal when a downward load is applied to the brake pedal. It is a side view of the support structure of the above-mentioned brake pedal in the initial stage at the time of vehicle front collision. It is a side view of the support structure of a brake pedal in the state where the 1st spindle of the above-mentioned brake pedal fell off. It is a disassembled perspective view of the support structure of the brake pedal which concerns on Embodiment 2 of this invention. It is a side view of the support structure of the brake pedal at the normal time which concerns on the said Embodiment 2. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Dash panel, 3 ... Brake pedal, 3b ... Boss part, 5a ... Car body side member, 10 ... Pedal bracket, 13 ... Support part, 13a ... 1st support hole, 13b ... Opening part, 13c ... Projection part, 15 ... 2nd support hole, 18, 19 ... projecting pin, 20, 60 ... rotating lever, 21b, 61b ... arc portion, 23 ... projecting pin, 30, 70 ... drop-off restricting member, 33, 73 ... insertion hole, 34, 74 ... Pin receiving part, 35, 75 ... Extension part, 35a ... Engagement surface, 40 ... First support shaft, 50 ... Second support shaft, 63 ... Projection part.

Claims (6)

In the support structure of the operation pedal that is provided at the rear of the dash panel and is operated to swing in the vehicle longitudinal direction,
A pedal bracket attached to the dash panel and extending to the rear side of the vehicle body, the pedal bracket provided with a support portion supporting the first and second support shafts extending in the vehicle width direction;
A pedal body that is swingably supported via a first support shaft supported by the pedal bracket;
The second support shaft supported by the pedal bracket is swingably supported, and at the time of a vehicle collision, the first support shaft is pivotally displaced around the second support shaft by interfering with a vehicle body side member. A rotation lever that allows the first support shaft to be displaced with respect to the pedal bracket by pushing down the support shaft;
A downward load is applied to the pedal body by being positioned below the first support shaft and supported by the pedal bracket so as to be swingable on one end side, and engaging the rotation lever on the other end side. A drop-off restricting member that restricts the downward displacement of the first support shaft when
In the event of a vehicle collision, the drop-off restricting member retreats from the lower side of the first support shaft with the rotation of the rotating lever, thereby releasing the restriction on the displacement of the first support shaft, while a downward load is applied to the pedal body. When applied, the drop-off regulating member applies a force at the other end side engaged with the turning lever to urge the turning lever in a direction opposite to the direction of pushing down the first support shaft. A support structure for an operating pedal, characterized in that the operating pedal is configured to act on a moving lever. The drop-out restricting member includes an extension portion extending rearward of the vehicle on the other end side engaged with the rotation lever, and the rotation lever is engaged with the extension portion while supporting the extension portion. It has a protrusion that extends in the width direction,
In the event of a vehicle collision, the drop-off restricting member is retracted from below the first support shaft by displacing the protruding portion so as to be disengaged from the extending portion as the rotating lever rotates. On the other hand, when a downward load is applied to the pedal body, the load acts on the drop-out restricting member via the first support shaft, and the extension portion is displaced while urging the protruding portion. 2. The operating pedal support structure according to claim 1, wherein the rotating lever is biased in a direction opposite to a direction in which the first support shaft is pushed downward.   In the extension part of the drop-off restricting member, the surface engaged with the protrusion part of the turning lever is configured such that the extension part urges the protrusion part when a downward load is applied to the drop-off restricting member. The operation pedal support structure according to claim 2, wherein the operation pedal support structure is inclined so as to be displaced.   The protrusion part of the said rotation lever is located in the front lower side of the said 2nd spindle, and it is provided so that it may engage with the extension part of the said drop-off restriction member. Support pedal support structure.   The support portion for the first support shaft provided on the pedal bracket normally restricts the downward displacement of the first support shaft, while the first support shaft according to the rotation displacement of the rotation lever at the time of a vehicle collision. The support structure for an operation pedal according to any one of claims 1 to 4, further comprising a restriction portion that allows the support shaft to fall downward.   The operation pedal support structure according to claim 5, wherein the pedal body is detached from the pedal bracket immediately after the first support shaft is dropped from the support portion.

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