JP3409651B2 - Automotive pedal bracket structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a pedal bracket for mounting pedals such as a brake pedal and an accelerator pedal of an automobile on a vehicle body.

[0002]

2. Description of the Related Art As a structure for mounting a pedal such as a brake pedal of an automobile, for example, as disclosed in Japanese Utility Model Laid-Open No. 6-1113, a pedal bracket of which the upper end portion is rotatably supported is used. The front wall is fastened and fixed to the dash lower panel with bolts and nuts, and the upper wall of the pedal bracket is fastened and fastened with bolts and nuts to the lower surface of the dash upper panel that is joined to the dash lower panel and projects toward the passenger compartment. It is known that the pedal bracket is fixedly mounted across the dash lower panel and the dash upper panel.

[0003]

As described above, the pedal bracket is fastened and fixed to the dash lower panel and the lower surface of the dash upper panel protruding toward the passenger compartment, respectively. When the pedal bracket is deformed to the room side and moves backward together with the dash lower panel, a diagonally upward turning moment is generated in the pedal bracket with the fastening point with the lower surface of the dash upper panel as a fulcrum, and the pedal bracket is slanted backward. It tends to retreat upwards.

On the other hand, inside the instrumental panel,
That is, since the steering member supporting the steering column is disposed in the front of the passenger compartment, diagonally above and behind the pedal bracket, the pedal bracket moves backward as described above in the case of a frontal collision of the vehicle. At times, the rear end of the pedal bracket may interfere with the steering member, and a collision input may act on the steering member.

Therefore, the present invention can prevent the pedal bracket from interfering with the steering member even if the pedal bracket moves backward due to the deformation of the dash lower panel toward the vehicle interior side during a frontal collision of the vehicle. A pedal bracket structure for an automobile is provided.

[0006]

According to a first aspect of the present invention, there is provided a pedal bracket in which an upper end portion of a pedal arm is rotatably rotatably supported so as to extend over a dash lower panel and a dash upper panel. The bracket is divided into a front bracket fixed to the dash lower panel and a rear bracket that pivotally supports the upper end of the pedal arm and is attached to the lower side of the dash upper panel, and the front bracket is attached to the rear bracket. It is characterized in that it is connected so that it can slide rearward.

According to a second aspect of the present invention, a bolt hole for inserting a bolt connecting the front bracket and the rear portion of the front bracket according to the first aspect is formed in a longitudinal hole in the front-rear direction. At the same time, the front bracket and the rear bracket are connected by inserting the bolt into the rear stop end of the bolt hole of the front bracket and the front stop end of the bolt hole of the rear bracket.

According to a third aspect of the present invention, when the upper wall of the rear bracket according to the first or second aspect of the present invention is brought into contact with the lower surface of the dash upper panel and the impact acting on the rear bracket in the backward direction exceeds a predetermined load. , It is characterized by being fixed so as to be separated from the dash upper panel.

According to a fourth aspect of the present invention, the upper wall of the rear bracket according to the third aspect is attached to the lower surface of the dash upper panel in a forwardly inclined state, and a fixing bolt is inserted through the upper wall. A bolt insertion hole is formed, and the bolt insertion hole is formed continuously on the front side of the bolt insertion hole with an opening width larger than that of the head portion of the bolt, and the rear bracket is pulled out from the head portion side of the bolt when the rear bracket moves backward. It is characterized in that a separation slit having a window is formed.

According to a fifth aspect of the present invention, the portion of the upper wall of the rear bracket where the bolt insertion hole is formed is bulged slightly higher than the general surface of the upper wall so as to be forwardly formed. It is characterized in that an inclined slope-shaped mounting surface is formed.

According to a sixth aspect of the present invention, the rear wall of the rear bracket according to any of the third to fifth aspects has a rear end of the upper wall which is disposed in the vehicle width direction behind the rear bracket. The feature is that it is set at a height position that is less than or equal to the part.

According to a seventh aspect of the present invention, the lower side portion of the steering member according to the third aspect is located at a position corresponding to the rear end portion of the rear bracket when the rear bracket moves backward. It is characterized in that a recess is formed so that it can pass through.

According to an eighth aspect of the present invention, the pedal arm rotatably supported by the pedal shaft provided on the rear bracket according to the first to seventh aspects urges the rearward turning force, and the pedal is rotated. The push rod lever rotatably supported on the shaft and connected to the push rod of the master back, and the pedal arm and the push rod lever in the normal state are integrally connected, and these are detected by the collision detection means. It is characterized in that a clutch means for separating the pedal arm and the push rod lever is provided.

According to a ninth aspect, either one of the push rod lever or the pedal arm according to the eighth aspect is slidably supported in the axial direction of the pedal shaft, and the clutch means is pushed with the pedal arm. The boss formed on each shaft of the rod lever is engaged with each other to engage with each other, and the push rod lever and the pedal arm are normally positioned to engage with each other. And a positioning means capable of allowing either the push rod lever or the pedal arm to move in the direction in which the engagement portion is disengaged along the axial direction of the pedal shaft. It has a feature.

According to a tenth aspect of the present invention, the positioning means according to the ninth aspect is axially slidably supported by an arm shaft provided in the rear bracket in parallel with the pedal shaft, so that the push rod lever or the pedal is provided. It is characterized in that it comprises a clutch arm connected to either one of the arms and a positioning member for positioning the clutch arm at a predetermined position in the axial direction of the arm shaft and for displacing the clutch arm when a predetermined load is exceeded.

According to an eleventh aspect, the collision detecting means according to the tenth aspect is provided on the rear portion of the front bracket by being rotatably supported by the arm shaft and moving the front bracket backward by the collision load. The collision detection lever that engages with the engaging portion and rotates, and the clutch arm and the end surface of the boss formed on each of the shaft support portions of the collision detection lever are engaged with each other, and the collision detection lever rotates. It is characterized in that the clutch arm is configured to move in the direction in which the engagement portion is disengaged along the axial direction of the arm shaft against the positioning force of the positioning member.

In the twelfth aspect, the tenth and eleventh aspects are provided.
The positioning member described in (1) is configured by a spring that biases the clutch arm in the axial direction of the arm shaft.

According to a thirteenth aspect, either the push rod lever or the pedal arm according to the eighth to twelfth aspects is engaged with the front and rear side edges of the other under normal conditions to connect them. In addition, a claw portion is provided that is disengaged when the push rod lever and the pedal arm are separated by the clutch means.

According to a fourteenth aspect of the present invention, a return spring is stretched over the rear bracket and the push rod lever according to the eighth to thirteenth aspects, and the pedal arm is turned rearward through the push rod lever. The feature is that the power is applied.

[0020]

According to the first aspect of the present invention, the pedal bracket is divided into a front bracket fixed to the dash lower panel and a rear bracket pivotally supporting the upper end of the pedal arm and attached to the lower side of the dash upper panel. Since the front bracket is connected to the rear bracket so as to be slidable rearward, the front bracket moves backward as the dash lower panel deforms toward the passenger compartment due to a frontal collision of the vehicle. Even if the front bracket only slides rearward with respect to the rear bracket, the rear bracket is restrained from moving backward, and the rear bracket interferes with the steering member disposed in the upper position near the rear end of the rear bracket. Can be avoided.

According to the second aspect, in addition to the effect of the first aspect, a bolt hole for inserting a bolt connecting the front bracket and the rear bracket is formed in the rear portion of the front bracket and the front portion of the rear bracket. The front bracket and the rear bracket are connected by inserting the bolts into the rear toe of the bolt hole of the front bracket and the front toe of the bolt hole of the rear bracket. It is possible to secure a sufficient sliding stroke with respect to the rear bracket.

According to claim 3, in addition to the effects of claims 1 and 2, the upper wall of the rear bracket is brought into contact with the lower surface of the dash upper panel, and the impact acting on the rear bracket in the backward direction causes a predetermined load. Since it is attached so as to separate from the dash upper panel when it crosses over, the front bracket slides backward relative to the rear bracket due to the deformation of the dash lower panel toward the passenger compartment side due to the frontal collision of the vehicle, but by any chance, Even if the amount of deformation of the dash lower panel exceeds the slide stroke of the front bracket and a collision load is input to the rear bracket, the rear bracket will disengage from the dash upper panel if the input exceeds a predetermined load. It is not restricted in movement and therefore supports the mounting point on the upper wall of the rear bracket. There is no possibility that moment behind rise occurs to.

As a result, the rear end portion of the rear bracket does not move backward and obliquely upward, and it is possible to avoid interference with the steering member disposed at the upper position near the rear end portion of the rear bracket. You can make it even more thorough.

According to the fourth aspect, in addition to the effect of the third aspect, the upper wall of the rear bracket is attached to the lower surface of the dash upper panel in a forwardly inclined state, and the fixing bolt is attached to the upper wall. A bolt insertion hole for inserting the bolt is formed, and the front side of the bolt insertion hole is continuously formed with an opening width larger than the head side of the bolt, and the head side of the bolt is moved when the rear bracket moves backward. When the rear slit moves backward due to the collision load input to the rear bracket because the deformation amount of the dash lower panel due to the front collision of the vehicle exceeds the slide stroke of the front bracket because the separation slit with the window part that comes out more is formed. , The head side of the bolt can be pulled out from this detaching slit without being caught, and the detaching action of the upper wall of the rear bracket can be smoothly performed. That.

According to claim 5, in addition to the effect of claim 4, a mounting surface is formed at a portion of the upper wall of the rear bracket where the bolt insertion hole is formed, which is slightly higher than the general surface of the upper wall. Since the contact area of the upper wall with the lower surface of the dash upper panel is small, the frictional resistance when the rear bracket retreats and separates can be reduced, and the mounting surface inclines forward. Since the bulging is formed in a slope shape, the detaching action of the rear bracket can be performed more smoothly.

According to Claim 6, in addition to the effects of Claims 3 to 5, the rear end of the upper wall of the rear bracket is disposed substantially rearward of the rear bracket in the vehicle width direction and has a substantially circular cross section. Since the rear bracket is moved backward due to the height position of the lower half and below, even if the rear end of the rear bracket interferes with the steering member, It is possible to prevent the collision input from acting on the steering member by slipping to the side.

According to the seventh aspect, in addition to the effects of the third to sixth aspects, when the rear bracket is moved backward, the rear end thereof can pass through the recess formed in the lower side portion of the steering member. It is possible to reliably prevent the rear bracket from interfering with the steering member.

According to the eighth aspect, in addition to the effects of the first to seventh aspects, in a normal state, the pedal arm and the push rod lever are integrally connected by the clutch means. The pedal arm and the push rod lever rotate integrally, and a master back operation can be performed which is the same as that of a general brake pedal device.

On the other hand, when the vehicle collides with the front surface, the clutch means is actuated by the detection action of the collision detection means to disconnect the pedal arm and the push rod lever, so that the master back moves backward or the dash lower panel is moved to the passenger compartment side. Even if the push rod of the master back moves backward due to deformation, it is possible to avoid the collision load from being input to the pedal arm by simply swinging and rotating the push rod lever.

According to the ninth aspect, in addition to the effect of the eighth aspect, the clutch means is provided on the end portions of the boss portions of the respective pivotal support portions of the pedal arm and the push rod lever, and the push rod lever or the pedal arm. Positioning either one of them along the axial direction of the pedal shaft so that the meshing portion engages, and displaces when a predetermined load is exceeded to allow movement of the meshing portion in the disengagement direction. Since it is configured as a mechanical clutch structure by the means, the structure is simple and can be obtained at a cost advantage.

According to claim 10, in addition to the effect of claim 9, since the clutch arm of the positioning means slides axially along an arm shaft parallel to the pedal shaft, a push rod lever or a pedal arm is provided. It is possible to smoothly perform axial sliding on either one of the pedal shafts and smoothly operate the clutch.

According to the eleventh aspect, in addition to the effect of the tenth aspect, since the collision detection means is mechanically constituted by the collision detection lever and the cam portion, the structure is simple and the cost is advantageously obtained. be able to.

According to the twelfth aspect, in addition to the effects of the tenth and eleventh aspects, since the positioning member is constituted by the spring, the structure is simple and the cost is advantageously obtained, and the vibration is absorbed by the spring. Thus, the rattling of the clutch arm can be eliminated and the quality feeling can be improved.

According to the thirteenth aspect, in addition to the effects of the eighth to twelfth aspects, either one of the push rod lever and the pedal arm is engaged with the front and rear side edges of the other under normal conditions, and both of them are engaged. Since there is provided a claw portion which is engaged and disengaged when the push rod lever and the pedal arm are disengaged by the clutch means, the connection strength between the pedal arm and the push rod lever in a normal state is improved. Can be increased.

According to the fourteenth aspect, in addition to the effects of the eighth to thirteenth aspects, the return spring is stretched over the push rod lever and the rear bracket. Since the biasing force of the return spring acting on the pedal arm is released by disconnecting the pedal arm, the load acting on the foot of the driver can be eliminated.

[0036]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a brake pedal unit. The brake pedal unit 1 includes a pedal arm 2 having a pedal pad (not shown) at its lower end, and a pedal bracket composed of a front bracket 4A and a rear bracket 4B. 4, an upper end of the pedal arm 2 is rotatably supported by a pedal shaft 3 provided on a rear bracket 4B, and a return spring 33 (not shown) urges a rearward turning force. I am doing it.

The pedal bracket 4 includes a front lower wall 5 of the front bracket 4A and a dash lower panel 13 at two upper and lower positions.
The rear end of the upper wall 6 of the rear bracket 4B is strung over the lower surface of the dash upper panel 14, specifically, the lower surface of the dash upper panel 14 and the rear wall. The vehicle body side bracket 15 joined and arranged is fastened and fixed by a bolt 18 and a nut 19 joined and arranged to the vehicle body side bracket 15.

On the other hand, in the front bracket 4A and the rear bracket 4B, bolt holes 7 for inserting bolts 21 for connecting the front bracket 4A and the rear bracket 4B are formed in the front and rear direction in the rear portion of the front bracket 4A and the front portion of the rear bracket 4B. The front bracket 4A is formed and fastened by inserting the bolt 21 into the rear toe of the bolt hole 7 of the front bracket 4A and the front toe of the bolt hole 7 of the rear bracket 4B. It is connected to 4B so as to be slidable rearward.

On the upper wall 6 of the rear bracket 4B, there is formed a bolt insertion hole 8 elongated in the front-rear direction through which the bolt 18 is inserted, and a detachment slit 9 is formed on the front side of the bolt insertion hole 8. It is formed continuously.

The detachment slit 9 has a window portion 10 formed with a larger opening width than the head portion of the bolt 18, that is, the bolt head portion and the washer 20, and the window portion 10 and the bolt insertion hole 8 are connected to each other. The taper 11 formed on the installation portion.

The portion of the upper wall 6 of the rear bracket 4B where the bolt insertion hole 8 is formed is bulged slightly higher than the general surface of the upper wall 6 and is inclined forward to be continuous with the general surface. A slope-shaped mounting surface 12 is formed.

Inside the instrumental panel, not shown,
That is, a steering member 16 having a circular cross section (including a polygonal cross section close to a circle) for supporting a steering column (not shown) is disposed in the vehicle width direction at the upper position near the rear end of the rear bracket 4B in the front. However, in this embodiment, the height of the downward protrusion of the vehicle body side bracket 15 is made slightly larger, and the bolt 18 of the upper wall 6 of the rear bracket 4B is
The nut 19 is fixed at a height position such that the rear end of the upper wall 6 has a height of approximately the lower half or less of the steering member 16.

The lower side of the steering member 16 is located at a position corresponding to the rear end of the rear bracket 4B.
A recess 17 is formed at the rear end of the rear bracket 4B so that the recess 17 can pass through when the rear bracket 4B moves backward.

In FIG. 1, 23 is a dash insulator provided on the side surface of the dash lower panel 13 on the vehicle compartment side, and 24 is a dash lower panel 13 and the front wall 5 of the pedal bracket 4.
The collar inserted in the bolt insertion hole of and is shown.

According to the structure of the above embodiment, the pedal bracket 4 is attached to the lower surface of the dash upper panel 14 by pivotally supporting the front bracket 4A fixed to the dash lower panel 13 and the upper end of the pedal arm 2. Since the front bracket 4A is connected to the rear bracket 4B so as to be slidable rearward, the dash lower panel 13 is deformed toward the passenger compartment by a frontal collision of the vehicle. Even if the front bracket 4A moves backward due to the movement of the rear bracket 4A, the backward movement of the rear bracket 4B can be suppressed only by sliding the front bracket 4A rearward with respect to the rear bracket 4B. It is possible to avoid interference with the steering member 16 arranged in the upper position in the vicinity. .

In addition, the front bracket 4A and the rear bracket 4B are connected to each other at the rear portion of the front bracket 4A and the front portion of the rear bracket 4B by inserting bolt holes 7 through which bolts 21 for connecting the front bracket 4A and the front bracket 4B are elongated in the front-rear direction. The front bracket 4A and the rear bracket 4B by inserting the bolt 21 into the rear end of the bolt hole 7 of the front bracket 4A and the front end of the bolt hole 7 of the rear bracket 4B. Since they are connected, the slide stroke of the front bracket 4A with respect to the rear bracket 4B can be sufficiently secured.

Further, even if the deformation amount of the dash lower panel 13 exceeds the sliding stroke of the front bracket 4A and a collision load is input to the rear bracket 4B,
Since the rear bracket 4B is attached so as to separate from the dash upper panel 14 when the input exceeds a predetermined load, the rear bracket 4B is not restricted in movement by the dash upper panel 14, and therefore,
There is no occurrence of a rearward rising moment with the mounting point of the upper wall 6 of the rear bracket 4B as a fulcrum.

As a result, the rear bracket 4B does not move backward obliquely upward, and interference with the steering member 16 disposed in the upper position near the rear end of the rear bracket 4B is further avoided. Can be thorough.

Moreover, when the rear bracket 4B is disengaged from the dash upper panel 14 as described above, a disengagement slit 9 including a bolt insertion hole 8 and a window 10 is formed in the upper wall 6 of the rear bracket 4B. Therefore, the head side of the bolt 21 can be removed from the detachment slit 9 without being caught, and the detaching action of the upper wall 6 of the rear bracket 4B can be smoothly performed.

Further, since the mounting surface 12 is formed at a portion of the upper wall 6 of the rear bracket 4B where the bolt insertion hole 8 is formed, the mounting surface 12 being slightly higher than the general surface of the upper wall 6, the upper wall 6 is formed.
Has a small contact area with the lower surface of the dash upper panel 14 and therefore can reduce the frictional resistance when the rear bracket 4B moves backward and separates, and the mounting surface 12 has a slope shape inclined forward. Since it is bulged, the detaching action of the rear bracket 4B can be performed more smoothly.

A rear end of the upper wall 6 of the rear bracket 4B is set at a height position which is lower than a substantially lower half portion of a steering member 16 which is disposed rearward of the rear bracket 4B in the vehicle width direction and has a substantially circular cross section. As a result, the rear bracket 4B moves backward, and the rear end of the rear bracket 4B should move to the steering member 1 by any chance.
Even if the steering member 16 interferes with the steering member 16, it is possible to prevent the steering member 16 from slipping down and the collision input acting on the steering member 16.

In particular, since the recess 17 is formed in the lower portion of the steering member 16 at a position corresponding to the rear end of the rear bracket 4B, when the rear bracket 4B moves backward as described above. , The rear end is this recess 1
It is possible to pass through the portion where 7 is formed, and it is possible to reliably prevent the rear bracket 4B from interfering with the steering member 16.

In the above embodiment, the brake pedal has been described as an example, but it goes without saying that it can be applied to a structure for mounting an accelerator pedal or a clutch pedal.

FIGS. 3 to 7 show a second embodiment of the present invention. In this embodiment, a bush 25 is attached to the pedal shaft 3 provided on the rear bracket 4B of the brake pedal unit 1 in the first embodiment. Cylindrical collar 2
4, a cylindrical boss portion 26 is provided at the upper end of the pedal arm 2, and the pedal arm 2 is rotatably fitted to the collar 24 via the boss portion 26. .

27 is fixed to the side surface of the dash lower panel 13 on the engine room side.
2 shows a master back for generating a hydraulic pressure in a brake unit (not shown) by pushing a push rod 28 penetrating through the pedal arm 2 by depressing the pedal arm 2.

The push rod 28 of the master back 27 is connected to the lower end of a push rod lever 29 rotatably supported on the pedal shaft 3 via a pin 30.

The push rod lever 29 is provided with a cylindrical boss portion 31 at the upper end thereof, and is rotatably and axially slid on the collar 24 of the pedal shaft 3 via the boss portion 31. It is fitted freely.

The above-mentioned pedal arm 2 and push rod lever 29 are integrally connected by a clutch means 32 in a normal state, but a collision detection means 41 described later is provided.
The pedal means 2 and the push rod lever 29 are separated by the operation of the clutch means 32 by the detection action of.

Further, in this embodiment, a return spring 33 is stretched between the pin 30 of the push rod lever 29 and the rear bracket 4B, and the pedal arm 2 is rotated rearward via the push rod lever 29. Power is applied.

In the present embodiment, the clutch means 32 is provided with a meshing portion 34 which is formed on the opposing end surfaces of the boss portion 26 of the pedal arm 2 and the boss portion 31 of the push rod lever 29, and which engage with each other. The push rod lever 29 is constituted by a positioning means 35 which urges the push rod lever 29 along the axial direction of the pedal shaft 3 in a direction in which the meshing portion 34 is engaged, that is, toward the pedal arm 2 side.

The positioning means 35 engages the clutch arm 36 that operates the push rod lever 29 in the axial direction of the collar 24, and pushes the clutch arm 36 to one side to engage the push rod lever 29 with the meshing portion 34. Spring 37 as a positioning member for axially urging
It consists of and.

The clutch arm 36 includes a cylindrical boss portion 38 and a fork portion 39, and an arm shaft 40 fixed to the pedal bracket 4 in parallel with the pedal shaft 3.
Is rotatably fitted through the boss portion 38 and slidably in the axial direction of the arm shaft 40, and the fork portion 39 is provided on both left and right side portions of the upper edge of the push rod lever 29. The push rod lever 29 is connected so as to be movable in the axial direction of the collar 24 by engaging with the upper and lower portions of the boss portion 31 straddling over the.

The spring 37 is mounted on the arm shaft 41 between one side wall of the pedal bracket 4 and the boss portion 38 of the clutch arm 36.

Reference numeral 41 is a collision detecting means for detecting the front collision of the vehicle and disengaging and operating the clutch means 32. In this embodiment, the collision detecting means 41 is rotatably supported by the arm shaft 40 via a boss portion 43. The collision detection lever 42 that rotates by engaging with the engagement portion 44 provided on the rear portion of the front bracket 4A, and the boss portion 43 of the collision detection lever 42.
And a cam portion 45 formed on each of opposite end surfaces of the boss portion 38 of the clutch arm 36 and engaged with each other.

The collision detecting lever 42 engages with the engaging portion 44 at the rear portion of the front bracket 4A to rotate when the front collision of the vehicle causes the front bracket 4A to slide rearward with respect to the rear bracket 4B. By this rotation, the cam portion 45 moves the clutch arm 36 in the axial direction of the arm shaft 40 against the spring force of the spring 37, and the engagement portion 34 of the clutch means 32 is disengaged. . That is, the spring 37 is displaced when a predetermined load is exceeded.

Therefore, the cam portion 45 is formed by the boss portions 38, 4
The end faces of No. 3 are formed as slopes with the same required lead angle so as to be in close contact with each other.

In this embodiment, the push rod lever 29 is normally engaged with the front and rear side edges of the pedal arm 2 to connect them, and the clutch means 32 allows the push rod lever 29 to move. A claw portion 47 is provided which is disengaged when the pedal arm 2 and the pedal arm 2 are separated.

In FIG. 3, reference numeral 46 denotes a stopper for restricting the backward rotation of the pedal arm 2.

As shown in FIG. 5, a bead 48 is provided at the base of the engaging portion 44 so that the bead 48 does not deform when it slides rearward and engages with the lever 42.

According to the structure of the second embodiment described above, in addition to the effects of the first embodiment, in the normal state, the meshing portion 34 of the clutch means 32 is in the engaged state, and the pedal arm 2 and the push rod are engaged. Since the lever 29 is integrally connected, the pedal arm 2 and the push rod lever 29 are integrally rotated by depressing the pedal arm 2, so that the push rod 28 is pushed like a general brake pedal device. The master back 27 can be operated by moving.

On the other hand, when the vehicle collides with the front surface and other functional components in the engine room interfere with the master back 27 and are pushed rearward, or the functional components in the engine room interfere with the dash lower panel 13, The dash lower panel 13 is deformed to the passenger compartment side, and the dash lower panel 1
When the front bracket 4A slides rearward with respect to the rear bracket 4B as the vehicle 3 is deformed toward the vehicle compartment side, the engagement portion 44 at the rear portion of the front bracket 4A and the collision detection lever 42 of the collision detection means 41 are engaged. Combine and rotate backward.

When the collision detecting lever 42 is rotated rearward, the guide arm of the cam portion 45 causes the clutch arm 36 of the clutch means 32 to move axially on the arm shaft 40 against the spring force of the spring 37. The push rod lever 29 is engaged by the clutch arm 36 with the engaging portion 3
The push rod lever 29 is disengaged from the pedal arm 2 by moving the push rod lever 29 in the disengaging direction.

As a result, even if the master back 27 moves backward and its push rod 28 exerts a rearward pressing force on the push rod lever 29, only the push rod lever 29 only idles and rotates. The collision load is not input to the arm 2, and it is possible to avoid causing a feeling of strangeness or giving a shock due to the load acting on the foot of the driver who depresses the pedal arm 2.

In particular, in this embodiment, the return spring 33 of the pedal arm 2 is stretched over the pin 30 connecting the push rod 28 at the lower end of the push rod lever 29 and the rear bracket 4B. As described above, when the clutch means 32 is disengaged and operated, the push rod lever 29 is instantaneously rotated by the backward biasing force of the return spring 33 to the disengaged position of the meshing portion 34 to freely move the pedal arm 2. At the same time, since the urging force of the return spring 33 on the pedal arm 2 is released, no load acts on the foot of the driver.

In addition to the fact that the collision detecting means 41 is mechanically constituted by the collision detecting lever 42 pivotally supported on the arm shaft 40 and the cam portion 45, the clutch means 32 is also engaged with the meshing portion 34 and the arm shaft 40. Since it is mechanically configured by the clutch arm 36 and the positioning means 35 including the spring 37, the structure can be simplified and the cost can be advantageously obtained.

Moreover, since the spring 37 can absorb the vibration and eliminate the rattling of the clutch arm 36, the quality feeling can be improved.

Further, since the clutch arm 46 slides in the axial direction along the arm shaft 40 which is parallel to the pedal shaft 3, the push rod lever 29 is allowed to slide smoothly on the pedal shaft 3 in the axial direction. Thus, the clutch can be operated smoothly.

In addition, since the push rod 29 is provided with the claw portion 47 which is normally engaged with the pedal arm 2, the connection strength between the pedal arm 2 and the push rod lever 29 in the normal state can be enhanced.

As the positioning member, instead of the spring 37 described above, a cylindrical collar which deforms in the axial direction when a predetermined load is exceeded may be used. In this case, it deforms in the axial direction when the predetermined load is exceeded. As described above, it is preferable that the collar is provided with a slit or the like so as to trigger the deformation.

In addition to the above, an electromagnetic clutch can be used as the clutch means 32, and a collision sensor that normally operates an air bag device mounted on a vehicle can be shared as the collision detection means 41. it can.

Further, although the push rod lever 29 side is slidable in the above embodiment, it may be slidable on the pedal arm 2 side. In this case, the push rod lever 29 is extended downward in FIG. It becomes an arm, and the pedal arm 2 in FIG. 3 is shortened to become a push rod lever.

Further, although the claw portion 47 is formed on the push rod 29 side, it goes without saying that it may be formed on the pedal arm 2.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a plan view of the pedal bracket of the same embodiment.

FIG. 3 is a side view showing a second embodiment of the present invention.

FIG. 4 is a plan view of a pedal bracket according to a second embodiment.

FIG. 5 is an enlarged explanatory view of the engaging portion of FIG.

FIG. 6 is a cross-sectional view showing the main parts of the second embodiment.

7 is a sectional view showing an engaged state of the claw portion of FIG.

[Explanation of symbols]

2 pedal arm 3 Pedal shaft (support shaft) 4 pedal bracket 4A front bracket 4B rear bracket 6 Upper wall 7 bolt holes 8 bolt insertion holes 9 Detachment slit 10 windows 11 taper 12 Mounting surface 13 Dash lower panel 14 Dash upper panel 16 Steering member 17 recess 18 volt 21 bolts 26 Pedal arm boss 27 Masterback 28 push rod 29 Push rod lever 31 Push rod lever boss 32 clutch means 33 Return spring 34 Mating part 35 Positioning means 36 clutch arm 37 Spring (positioning member) 38 Clutch arm boss 40 arm shaft 41 Collision detection means 42 Collision detection lever 43 Boss of collision detection lever 44 Engagement part 45 Cam part 47 Claw

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-254821 (JP, A) JP-A-10-147221 (JP, A) Actually open 62-145769 (JP, U) Actually open 57- 107664 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60K 26/02 B60T 7/06 B62D 1/19 B62D 25/08

Claims (14)

(57) [Claims] 1. A front bracket in which the pedal bracket is fixed to the dash lower panel in a structure in which a pedal bracket rotatably rotatably supporting an upper end portion of a pedal arm is mounted over a dash lower panel and a dash upper panel, Support the upper end of the pedal arm,
A vehicle pedal bracket structure characterized by being formed separately from a rear bracket attached to the lower side of a dash upper panel, and a front bracket being connected to the rear bracket so as to be slidable rearward. 2. A rear hole of the front bracket and a front part of the rear bracket are formed with a long hole in the front-rear direction for inserting a bolt connecting them, and a rear end of the bolt hole of the front bracket. The pedal bracket structure for an automobile according to claim 1, wherein the front bracket and the rear bracket are connected to each other by inserting the bolt into a portion and a front end of the bolt hole of the rear bracket. 3. An upper wall of the rear bracket is brought into contact with a lower surface of the dash upper panel, and the rear bracket is fixed so as to be separated from the dash upper panel when an impact acting in a backward direction on the rear bracket exceeds a predetermined load. The pedal bracket structure for an automobile according to claim 1 or 2. 4. The upper wall of the rear bracket is attached to the lower surface of the dash upper panel in a forwardly inclined state, and the upper wall is formed with a bolt insertion hole through which a fixing bolt is inserted. The front side of the bolt insertion hole is formed continuously with a larger opening width than the head side of the bolt, and a detachment slit having a window part that comes out from the head side of the bolt when the rear bracket is moved backward is formed. Claim 3 characterized by
The automobile pedal bracket structure described in. 5. A slope-shaped mounting surface which is bulged slightly higher than a general surface of the upper wall and is inclined forward is formed in a portion of the upper wall of the rear bracket where the bolt insertion hole is formed. The pedal bracket structure for an automobile according to claim 4, wherein. 6. A rear bracket upper wall rear end is set at a height position which is equal to or lower than a substantially lower half portion of a steering member having a substantially circular cross-section disposed rearward of the rear bracket in the vehicle width direction. The pedal bracket structure for an automobile according to claim 3, wherein the pedal bracket structure is for an automobile. 7. A lower part of the steering member is provided with a recess at a position corresponding to the rear end of the rear bracket so that the rear end of the rear bracket can pass through when the rear bracket moves backward. Item 7. A pedal bracket structure for an automobile according to any one of items 3 to 6. 8. A pusher of a master back is provided by urging a turning force backward to a pedal arm rotatably supported by a pedal shaft provided on a rear bracket and rotatably supported by the pedal shaft. A push rod lever connected to the rod and, in a normal state, the pedal arm and the push rod lever are integrally connected, and clutch means for disconnecting the pedal arm and the push rod lever by the detection action of the collision detection means. The pedal bracket structure for an automobile according to any one of claims 1 to 7, characterized in that. 9. A boss end face in which either one of the push rod lever and the pedal arm is slidably supported in the axial direction of the pedal shaft, and the clutch means is formed on each shaft portion of the pedal arm and the push rod lever. The meshing portion formed on each other and the meshing portion of the push rod lever and the pedal arm are normally positioned so as to be engaged with each other, and the push rod lever or the pedal arm is displaced when a predetermined load is exceeded. 9. A pedal bracket for an automobile according to claim 8, wherein either one of them is a positioning means capable of allowing the engagement of the engagement portion to be disengaged along the axial direction of the pedal shaft. Construction. 10. A clutch arm in which the positioning means is axially slidably supported by an arm shaft provided in the rear bracket in parallel with the pedal shaft and connected to either one of a push rod lever and a pedal arm.
10. The pedal bracket structure for an automobile according to claim 9, wherein the clutch arm is positioned at a predetermined position in the axial direction of the arm shaft and is formed by a positioning member that is displaced when a predetermined load is exceeded. 11. The collision detection means is rotatably supported by an arm shaft, and is rotated by being engaged with an engagement portion provided at a rear portion of the front bracket when the front bracket moves backward by a collision load. The collision detection lever is formed on the end faces of the bosses formed on the clutch arm and the shaft support parts of the collision detection lever, and engages with each other.The rotation of the collision detection lever resists the positioning force of the positioning member to move the clutch arm. 11. The pedal bracket structure for an automobile according to claim 10, wherein the pedal portion structure comprises a cam portion that moves in a direction in which the engagement portion is disengaged along the axial direction of the arm shaft. 12. The pedal bracket structure for an automobile according to claim 10, wherein the positioning member is constituted by a spring for urging the clutch arm in the axial direction of the arm shaft. 13. A push rod lever or a pedal arm is normally engaged with the front and rear side edges of the other to connect them, and the clutch means allows these push rod lever and pedal arm to be connected. The pedal bracket structure for an automobile according to any one of claims 8 to 12, wherein a claw portion that is disengaged when the arm is separated is provided. 14. A return spring is stretched between the rear bracket and the push rod lever so as to urge rearward turning force to the pedal arm through the push rod lever. The pedal bracket structure for an automobile according to any one of 13 above.