JP2007296873A - Supporting structure of operation pedal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supporting structure of an operation pedal for regulating falling-off of a spindle of the operation pedal when downward load is applied to the operation pedal and making the spindle of the operation pedal fall off at the time of a vehicle collision. <P>SOLUTION: When the downward load is applied to a brake pedal 2, a first projection part 29b of a lock member 29 is engaged to a claw part 7a of a pedal bracket 3 and a second projection part 29c is engaged to a projection part 26b of a rotating lever 5, and thereby the rotation of the lock member 29 is regulated and falling-off of the first spindle 13 is regulated. In the case of a front collision of the vehicle, engagement of the second projection part 29c of the lock member 29 to the projection part 26b of the rotating lever 5 is evaded and the lock member 29 is rotated around the first spindle 13, and thereby falling-off of the first spindle 13 is permitted and the first spindle 13 comes off from the pedal bracket 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

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

  In general, at the time of a car collision (front collision), the brake pedal of the car will collide without stopping even though the driver steps on the brake pedal to brake the car to avoid the collision. There are many collisions in the depressed state.

  In that case, the front part of the vehicle body collapses while absorbing the collision energy due to the collision, and the engine disposed in the engine room moves backward while pushing the dash panel that partitions the engine room located on the rear side from the vehicle compartment. . A brake boost is provided on the vehicle body front side of the dash panel, and a brake pedal positioned behind the dash panel is connected to the brake boost via a push rod. For this reason, as the dash panel (brake boost) moves backward, the brake pedal is also pushed through the push rod to move backward. As a result, there is a problem that a large kickback occurs due to the collision load acting on the foot of the driver who is stepping on the brake pedal just before the collision, and the driver's foot is impacted.

  Therefore, conventionally, various countermeasures have been proposed to deal with such problems. For example, in Patent Document 1, a front end portion is fixed to a dash panel, a pedal bracket that supports a support shaft of an operation pedal at a central portion, and a rotation lever that is rotatably supported at the rear end portion of the pedal bracket. A pedal mounting device is disclosed. In this pedal mounting device, the pivot lever is in contact with the vehicle body side member at the time of a collision and pivots so as to push the pivot of the operation pedal downward. It is made to fall down along the guide part.

  Patent Document 2 includes a pedal bracket having a front end portion fixed to a dash panel and supporting a support shaft of an operation pedal at a rear portion, and a rotation lever rotatably supported at the rear end portion of the pedal bracket. A pedal structure in which a spring is provided between the rotating lever and the vehicle body side member is disclosed. In this pedal structure, the pivot lever is pivoted by the contact with the vehicle body side member and the urging force of the spring in the event of a collision so as to push the pivot of the manipulation pedal downward, thereby supporting the manipulation pedal. The shaft is made to fall down.

In both cases, as described above, the operation pedal support shaft is dropped, so that the pedal depression portion of the brake pedal is prevented from moving to the rear of the vehicle body, and the dash panel is deformed, A large space is maintained under the driver's seat to mitigate the impact on the driver's feet.
JP 2005-510785 A Japanese Patent No. 3269372

  By the way, in the thing of the said patent document 1 and 2, although the spindle of an operation pedal does not drop normally, for example, when a downward impact is added to an operation pedal, the spindle of an operation pedal falls off. There is a risk that.

  Therefore, the inventors of the present invention have a simple configuration, and when a downward load is applied to the operation pedal, the operation pedal support shaft is prevented from dropping, and in the event of a collision, the operation pedal support shaft is dropped. Led to the development.

  The present invention has been made in view of such points, and the object of the present invention is to regulate the dropping off of the support pedal shaft when a downward load is applied to the operation pedal, while at the time of a vehicle collision. An object of the present invention is to provide a support structure for an operation pedal for dropping the support pedal shaft.

  1st invention is the support structure of the operation pedal provided in the vehicle rear of a dash panel, Comprising: It attaches to the said dash panel, extends from the dash panel to the vehicle rear, and extends the said operation pedal in the vehicle width direction. A pedal bracket that is swingably supported via a support shaft and a second support shaft that is pivotally supported by the pedal bracket via a second support shaft that extends in the vehicle width direction. A pivot lever that pivots around two pivots to push the first pivot downward and drop off the pedal bracket; and a washer-like lock member rotatably coupled to and supported by the first pivot A first protrusion and a second protrusion projecting outwardly from each other on the outer periphery of the lock member, and the pedal bracket or the rotation lever includes both the lock member. An engagement portion that engages with a recess between the raised portions is provided, and the lock member is configured such that when the downward load is applied to the operation pedal, the first protrusion comes into contact with the engagement portion and the second While the protrusion is in contact with the rotating lever, the first support shaft is prevented from falling off, and in the event of a vehicle collision, the rotation of the rotating lever causes the second protrusion to contact the rotating lever. Is configured to allow the first support shaft to drop off by rotating around the first support shaft.

  As a result, when a downward load is applied to the operation pedal, the first protrusion of the lock member comes into contact with the engagement portion and the second protrusion comes into contact with the rotation lever, so that the lock member rotates. Is restricted, and the dropping of the first support shaft of the operation pedal that connects and supports the lock member is restricted. On the other hand, at the time of a vehicle collision, the contact of the second protrusion of the lock member with the rotation lever is avoided by the rotation of the rotation lever, and the lock member rotates about the first support shaft. Dropping of the spindle is permitted. As described above, when a downward load is applied to the operation pedal, the first support shaft of the operation pedal is prevented from falling off by a lock member having a simple structure. Can be dropped.

  According to a second aspect, in the first aspect, the support portion of the first support shaft of the pedal bracket regulates the dropout of the first support shaft during normal operation, and the rotation lever rotates during a vehicle collision. Therefore, it has a restricting part which permits dropping of the first support shaft.

  As a result, the support portion of the first support shaft of the pedal bracket is provided with a restricting portion that restricts the drop of the first support shaft in a normal state and permits the first support shaft to be removed by the rotation of the turning lever when the vehicle collides. Since it is provided, the dropout of the first support shaft can be reliably controlled during normal times.

  According to a third aspect, in the second aspect, the operation pedal is detached from the pedal bracket immediately after the first support shaft is detached from the support portion of the pedal bracket. .

  Thus, since the operating pedal is detached from the pedal bracket immediately after the first supporting shaft is dropped from the support portion of the first supporting shaft of the pedal bracket, it is possible to reliably suppress the operation pedal from moving to the rear of the vehicle. it can.

  According to the present invention, when a downward load is applied to the operation pedal, the rotation of the lock member is restricted, and the drop of the first support shaft of the operation pedal that connects and supports the lock member is restricted. In the event of a collision, the first support shaft is allowed to drop off. When a downward load is applied to the operation pedal, the lock member having a simple structure restricts the first support shaft from falling off. At the time of a collision, the first support shaft can be dropped.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a side view of a brake pedal support structure according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the brake pedal support structure, and FIG. 3 is a normal brake pedal support structure. 4 is a side view of the brake pedal, FIG. 5 is a side view of the brake pedal support structure when a downward load is applied to the brake pedal, and FIG. FIG. 7 is a side view of the brake pedal support structure in the initial stage of the collision, FIG. 7 is a side view of the brake pedal support structure in the middle stage of the vehicle front collision, and FIG. 8 is the first support of the brake pedal. It is a side view of the support structure of a brake pedal in the state where a shaft dropped off. In FIG. 2, the illustration of the lock member is omitted.

  A support structure for a brake pedal (corresponding to an operation pedal) provided on the rear side of a dash panel according to an embodiment of the present invention is mounted on a right-hand drive vehicle. 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 brake pedal 2 so as to be swingable in the vehicle front-rear direction, a brake booster 4, and the like. Is attached. The brake pedal 2 extends obliquely downward from the support shaft inward in the vehicle width direction, and a pedal stepping portion 2a is provided at the lower end portion. A pivot lever 5 that pivots the support shaft of the brake pedal 2 downward from the pedal bracket 3 in the event of a frontal collision of the vehicle (corresponding to a vehicle collision) is pivotally supported on the pedal bracket 3. The brake booster 4 is connected to the brake pedal 2 via a push rod 4a. An instrument panel reinforcement 32 made of a pipe for supporting a steering column is disposed behind the pivot lever 5 of the pedal bracket 3. The instrument panel reinforcement 32 includes a pivot lever. A vehicle body side member 33 is provided to face the rear end portion of 5 at a predetermined distance.

  As shown in FIGS. 2 and 3, the pedal bracket 3 includes a mounting board 6 bolted to the dash panel 1 and a pair of left and right side plates 7, 7 extending from the left and right edges of the mounting board 6 to the rear of the vehicle. And have.

  Each side plate 7 is formed with a circular first support hole 14 extending in the vehicle width direction and inserting and supporting the first support shaft 13 of the brake pedal 2. The peripheral portion of each first support hole 14 constitutes a support portion 20 of the first support shaft 13. The first support shaft 13 is a bolt in which a screw 13a is cut at one end and a bolt head 13b is provided at the other end. The screw 13 a 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 7 after the first support shaft 13 is attached to the pedal bracket 3. Then, in a state where the first support shaft 13 is inserted into each first support hole 14 and the insertion hole 21 a of the boss portion 21 of the brake pedal 2, the nut 22 is inserted into the screw 13 a of the first support shaft 13 via the washer 23. By screwing, the brake pedal 2 is supported by the pedal bracket 3 so as to be swingable about the first support shaft 13. Further, the configuration of the screw 13 a and the washer 23 as described above prevents the screw 13 a from damaging the support portion 20 of the pedal bracket 3 when the first support shaft 13 receives a load when the brake pedal 2 is operated. Can do.

  An opening 15 having a width smaller than the shaft diameter of the first support shaft 13 is formed below the first support hole 14 of each support portion 20, and protrudes from the rear and the front of the vehicle, respectively. A pair of front and rear projecting portions 16 and 16 (corresponding to a restricting portion) that are opposed to each other through the opening 15 are disposed. Each of the protrusions 16 supports the first support shaft 13 during normal times other than the time of the frontal collision of the vehicle and restricts the downward movement (movement) of the first support shaft 13. The first support shaft 13 is allowed to drop by being deformed by the movement. A notch 19 having a width larger than the shaft diameter of the first support shaft 13 is formed below the opening 15 of each support portion 20.

  A circular second support hole 18 is formed on the rear side of the first support hole 14 of each side plate 7 and extends in the vehicle width direction to insert and support the second support shaft 17 of the rotating lever 5. The second support shaft 17 is a bolt in which a screw is cut at one end and a bolt head is provided at the other end. Then, a nut (not shown) is screwed into a screw of the second support shaft 17 in a state where the second support shaft 17 is inserted into each second support hole 18 and each insertion hole 25 of the rotation lever 5. Thus, the rotation lever 5 is supported by the pedal bracket 3 so as to be rotatable about the second support shaft 17.

  A claw portion 7a (corresponding to an engagement portion) is provided on the rear side of the first support hole 14 of each side plate 7 so as to extend inward in the vehicle width direction.

  The pivot lever 5 is formed in a substantially U-shaped cross section, and extends along the inner surface of each side plate 7 of the pedal bracket 3 and has a pair of left and right sides formed with circular insertion holes 25 at the lower end. It has side plates 26 and 26 and a top plate 27 that connects the upper edge portions of the side plates 26 and 26 to each other.

  A portion of each side plate 26 facing the first support shaft 13 (the boss portion 21 of the brake pedal 2) is formed in an arc shape to form an arc portion 26a, and the arc portion 26a is a cylindrical boss portion. The outer surface of 21 is provided with a gap. On the lower side of the insertion hole 25 of each side plate 26, a protruding portion 26b that protrudes obliquely forward toward the lower side is provided.

  As shown in FIGS. 3 and 4, two washer-like (substantially annular) lock members 29, 29 are connected and supported on the first support shaft 13 so as to be rotatable around the first support shaft 13. Yes. The two lock members 29, 29 are plate-shaped and are respectively disposed between the boss portion 21 of the brake pedal 2 and the left and right side plates 7, 7 of the pedal bracket 3. The left and right side plates 26 are located on the outer side in the vehicle width direction than the outer surfaces of the side plates 26, 26. A circular insertion hole 29a is formed at the center of the lock member 29, and the lock member 29 can be rotated around the first support shaft 13 by inserting and supporting the first support shaft 13 through the insertion hole 29a. Supported by First and second projecting portions 29b and 29c are provided on the rear portion of the outer peripheral portion of each lock member 29 so as to project radially outward from each other by a predetermined distance. Each first protrusion 29b is disposed above each second protrusion 29c. A protruding portion 29d that protrudes inward in the vehicle width direction is provided at the tip of the inner surface of each second protrusion 29c. The claw portions 7a of the pedal bracket 3 are engaged with the recesses 29e between the protrusions 29b and 29c of the lock members 29. Each first projection 29b comes into contact with each claw 7a of the pedal bracket 3 when a downward load is applied to the brake pedal 2. Each second protrusion 29c has a protrusion 29d that abuts on the upper edge of each protrusion 26b of the rotating lever 5 when a downward load is applied to the brake pedal 2. The contact of the protrusion 29d with each protrusion 26b is avoided by the rotation of the protrusion 5.

-Operation of brake pedal support structure-
Hereinafter, the operation of the brake pedal support structure will be described.

  First, the operation of the brake pedal support structure when a downward load is applied to the brake pedal 2 will be described.

  When a downward load is applied to the brake pedal 2, the first support shaft 13 is pulled downward together with the boss portion 21 of the brake pedal 2. At this time, the lock member 29 is pushed downward by the first support shaft 13. Accordingly, as shown in FIG. 5, the first protrusion 29 b of the lock member 29 is engaged with the claw 7 a of the pedal bracket 3, and the second protrusion 29 c is engaged with the protrusion 26 b of the rotating lever 5. Match. For this reason, the rotation of the lock member 29 is restricted, and the dropping of the first support shaft 13 that connects and supports the lock member 29 is restricted.

  Next, the operation of the brake pedal support structure at the time of vehicle front collision will be described.

  As shown in FIG. 6, when the vehicle collides forward, the dash panel 1 and the pedal bracket 3 move to the rear of the vehicle, and the rear end portion of the side plate 26 of the turning lever 5 contacts the vehicle body side member 33. Accordingly, the rotation lever 5 rotates about the second support shaft 17 counterclockwise as shown in FIG. For this reason, the engagement of the second protrusion 29c of the lock member 29 with the protrusion 26b of the rotating lever 5 is avoided.

  And the circular arc part 26a of the rotation lever 5 contacts the boss | hub part 21 of the brake pedal 2, and pushes this downward. For this reason, the 1st spindle 13 is pushed below. Then, as shown in FIG. 7, the protrusion 16 of the pedal bracket 3 is deformed and the opening 15 is expanded and deformed. At this time, the first protrusion 29b of the lock member 29 contacts the claw portion 7a of the pedal bracket 3, and the lock member 29 rotates about the first support shaft 13 counterclockwise as shown in FIG. To do. As a result, dropping of the first support shaft 13 is permitted.

  Then, as shown in FIG. 8, the support of the first support shaft 13 with respect to the support portion 20 is released, and the first support shaft 13 falls off from the pedal bracket 3 through the notch portion 19 together with the lock member 29. Immediately thereafter (almost simultaneously), the brake pedal 2 is also detached (dropped) from the pedal bracket 3.

-Effect-
As described above, according to the present embodiment, when a downward load is applied to the brake pedal 2, the first protrusion 29 b of the lock member 29 contacts the claw 7 a of the rotating lever 5 and the second protrusion When 29c contacts the rotation lever 5, the rotation of the lock member 29 is restricted, and the first support shaft 13 of the brake pedal 2 that connects and supports the lock member 29 is restricted. On the other hand, at the time of a frontal collision of the vehicle, the rotation of the rotation lever 5 prevents the second protrusion 29c of the lock member 29 from contacting the rotation lever 5, and the lock member 29 rotates around the first support shaft 13. By moving, dropping of the first support shaft 13 is permitted. As described above, when a downward load is applied to the brake pedal 2, the lock member 29 having a simple structure restricts the first support shaft 13 from dropping off, while the vehicle front impact is the same as before. The first support shaft 13 can be dropped off.

  Further, the support portion 20 of the first support shaft 13 of the pedal bracket is prevented from dropping off the first support shaft 13 at normal times, and the first support shaft 13 is removed by turning of the turning lever 5 at the time of a vehicle front collision. Since the permitting protrusion 16 is provided, the dropout of the first support shaft 13 can be reliably controlled during normal times.

  Further, since the brake pedal 2 is detached from the pedal bracket 3 immediately after the first support shaft 13 is detached from the support portion 20 of the first support shaft 13 of the pedal bracket, it is ensured that the brake pedal 2 moves rearward of the vehicle. Can be suppressed.

(Other embodiments)
In the above embodiment, the brake pedal support structure is mounted on a right-hand drive vehicle, but may be mounted on a left-hand drive vehicle.

  Moreover, in the said embodiment, although the two lock members 29 are provided, it is not restricted to this, For example, you may provide only one.

  Moreover, in the said embodiment, although the engaging part was comprised by the nail | claw part 7a, as long as it engages with the recessed part 29c of the lock member 29, what kind of engaging part may be sufficient.

  Moreover, in the said embodiment, although the nail | claw part 7a is provided in the pedal bracket 3, you may provide in the rotation lever 5. FIG.

  Moreover, in the said embodiment, although the control part is comprised by the projection part 16, as long as it controls the drop-off | omission of the 1st spindle 13 at the time of a vehicle front, the fall of the 1st spindle 13 is permitted at the time of a vehicle front collision, The restriction unit may be any type.

  Moreover, in the said embodiment, although the 1st spindle 13 is completely dropped from the pedal bracket 3, it is not necessary to drop completely.

  In the above embodiment, the brake pedal 2 is completely detached from the pedal bracket 3 immediately after the first support shaft 13 is detached from the pedal bracket 3, but the present invention is not limited to this. It may be separated after a while from falling off, and may not be completely detached from the pedal bracket 3.

  In the above embodiment, when a downward load is applied to the brake pedal 2, the second protrusion 29 c is engaged with the upper edge of the protrusion 26 b of the rotating lever 5. First, for example, by changing the configuration and arrangement position of the rotation lever 5 and the lock member 29, the second protrusion 29c is engaged with the tip of the protrusion 26b of the rotation lever 5, as shown in FIG. You may make it match. Also in this case, the rotation of the lock member 29 is restricted, and the first support shaft 13 that connects and supports the lock member 29 is restricted.

  The present invention is not limited to the embodiments, and can be implemented in various other forms without departing from the spirit or main features thereof.

  As described above, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the operation pedal support structure according to the present invention regulates the dropping off of the operation pedal support shaft when a downward load is applied to the operation pedal, while the operation pedal support structure supports a vehicle collision. Applicable for applications such as dropping the shaft.

It is a side view of the support structure of a brake pedal concerning an embodiment of the present invention. It is a disassembled perspective view of the support structure of a brake pedal. It is a side view of the support structure of a brake pedal at the normal time. It is a figure which shows a locking member, (a) is a front view of a locking member, (b) is a side view of a locking member. 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 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 middle 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 a brake pedal fell off. It is a side view of the support structure of a brake pedal when a downward load is applied to the brake pedal.

Explanation of symbols

1 Dash panel 2 Brake pedal (operating pedal)
3 Pedal bracket 5 Rotating lever 7 Side plate 7a Claw part (engaging part)
13 1st spindle 15 Opening part 16 Protrusion part (regulation part)
17 Second support shaft 19 Notch portion 20 Support portion 26 Side plate 26a Arc portion 26b Projection portion 29 Lock member 29b First projection portion 29c Second projection portion 29e Recess 33 Car body side member

Claims (3)

A support structure for an operation pedal provided at the rear of the dash panel vehicle,
A pedal bracket attached to the dash panel and extending rearward from the dash panel and supporting the operation pedal in a swingable manner via a first support shaft extending in the vehicle width direction;
The first support shaft is supported by the pedal bracket through a second support shaft extending in the vehicle width direction so as to be rotatable, and abuts against a vehicle body side member and rotates around the second support shaft in the event of a vehicle collision. A pivot lever that pushes down to drop off the pedal bracket,
A washer-like lock member rotatably connected to and supported by the first support shaft,
First and second protrusions that protrude outward are respectively disposed on the outer periphery of the lock member.
The pedal bracket or the rotation lever is provided with an engaging portion that engages with a recess between the two protrusions of the lock member,
When a downward load is applied to the operation pedal, the lock member is configured such that the first projection comes into contact with the engagement portion and the second projection comes into contact with the rotating lever. While the shaft is prevented from falling off, in the event of a vehicle collision, the rotation of the rotation lever avoids contact of the second protrusion with the rotation lever and rotates around the first support shaft. A structure for supporting an operating pedal, wherein the first support shaft is allowed to drop off. The operation pedal support structure according to claim 1,
The support portion of the first support shaft of the pedal bracket restricts dropping of the first support shaft during normal operation and permits the first support shaft to drop by turning of the turning lever at the time of a vehicle collision. A support structure for an operation pedal, comprising: In the operation pedal support structure according to claim 2,
The operation pedal support structure according to claim 1, wherein the operation pedal is detached from the pedal bracket immediately after the first support shaft is detached from the support portion of the pedal bracket.

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