JP3459378B2 - Automotive brake pedal device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle brake pedal device.

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Laid-Open No. 6-1113, a brake pedal device for an automobile includes a dash lower panel and a dash lower panel which includes a pedal bracket rotatably supporting an upper end of a pedal arm. It is fastened and fixed to the lower surface of the dash upper panel that is joined to the lower panel and protrudes toward the passenger compartment side. , The master back is activated.

[0003]

When the master back or the dash lower panel fixing the master back is deformed and moves backward toward the passenger compartment during a frontal collision of the vehicle,
A turning force in a direction opposite to the stepping direction may act on the pedal arm via the push rod of the masterback, and the stepped position of the brake pedal may be displaced rearward to cause a feeling of strangeness.

In view of this, the present invention prevents the occurrence of discomfort by preventing the collision load from acting on the pedal arm via the push rod of the master back during a frontal collision of the vehicle. Is provided.

According to the invention of claim 1, a pedal bracket fixed to the dash panel, a pedal arm rotatably supported by a pedal shaft provided on the pedal bracket, and freely rotatable on the pedal shaft. is pivotally supported on the structure and a push rod lever which is connected to the master back of the push rod, fixes the front wall of the pedal bracket to the dash lower panel, an upper wall of the pedal bracket in the rear of the dash lower panel While being fixed to the lower surface of the vehicle body member positioned so as to be relatively movable in the front-rear direction, a notch formed by opening a groove in the forward direction is provided at the front end of either the pedal arm or the push rod lever, and the notch is provided as a link member. To the clevis pin provided on the pedal arm or push rod lever and the link member. And the pedal arm and the push rod lever are connected via the link member so that the pedaling force of the pedal arm is transmitted to the master back via the push rod, and at the bottom surface of the vehicle body member, A slide plate is provided to push the link member forward to disengage the clevis pin from the cutout portion of the pedal arm or the push rod lever when the lower surface portion and the pedal bracket relatively move in the front-rear direction. I am trying.

According to a second aspect of the present invention, an elongated slide hole is formed in the upper wall of the pedal bracket according to the first aspect, and the upper wall of the pedal bracket is attached to the body member through the slide hole. It is characterized in that it is fixed to the lower surface so as to be slidable in the front-rear direction with respect to a load of a predetermined value or more.

According to the invention of claim 3, claims 1 and 2 are provided.
The slide plate described in (1) is characterized in that it is fastened together with the pedal bracket to the lower surface of the vehicle body member.

According to the invention of claim 4, claims 1 to 3 are provided.
The notch described in (1) is characterized in that it is formed in a protruding portion that protrudes forward of the pedal shaft through hole of the pedal arm.

According to a fifth aspect of the invention, the link member according to the fourth aspect and the push rod lever are connected by a front protrusion formed on the push rod lever. The pedal arm is positioned below the protrusion of the pedal arm, and is bent toward the pedal arm, and the protrusion of the pedal arm is bent toward the push rod lever. There is.

In the invention of claim 6, the link member according to claim 5 has a plate member arranged so as to sandwich the projecting portion and the front projecting portion, and the clevis pin is provided with these plate members. On the other hand, while connecting the members, the slide plate is provided with a pair of pressing portions protruding downward and spaced apart, and the pressing portions face both ends of the clevis pin.

[0011]

[0012]

According to the first aspect of the present invention, since the pedal arm and the push rod lever are integrally connected via the link member in the normal state, the pedal arm is depressed by depressing the pedal arm. The push rod lever and the push rod lever are integrally rotated, 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 dash lower panel fixed to the master back is deformed toward the passenger compartment, and a predetermined point is fixed at the fixing point between the upper wall of the pedal bracket fixed to the dash lower panel and the lower surface of the vehicle body member. When a collision load of a value or more is applied, the upper wall of the pedal bracket moves rearward relative to the lower surface of the vehicle body member.

By the rearward movement of the pedal bracket, the slide plate relatively moves forward and pushes the link member forward, and the notch formed in either the pedal arm or the push rod lever is connected to the link member. , The link member is disconnected from the pedal arm or the push rod lever, and the pedal arm and the push rod lever are disconnected, so the master back moves backward or the body member deforms toward the passenger compartment. Even if the push rod of the master back moves backward, the push rod lever simply swings and rotates, and the collision load is not input to the pedal arm. Therefore, the depressed position of the pedal arm shifts backward, which causes a feeling of strangeness. Can be avoided.

According to the invention described in claim 2, claim 1
In addition to the above effect, a long slide hole is formed in the upper wall of the pedal bracket, and the upper wall of the pedal bracket is passed through the slide hole to the lower surface of the vehicle body member in the front-back direction with respect to a load of a predetermined value or more. Since it is attached so as to be slidable relatively to, the grand rearward movement of the pedal bracket can be smoothly performed, and the link member and the pedal arm can be promptly released.

According to the third aspect of the present invention, in addition to the effects of the first and second aspects, the slide plate is fastened together with the pedal bracket to the lower surface of the vehicle body member. It is possible to reduce the man-hours for assembling to the vehicle body.

According to the invention of claim 4, claim 1
In addition to the effects of ~ 3, since the notch is formed in the protruding portion that protrudes forward of the pedal shaft through hole of the pedal arm, the amount of downward protrusion of the slide plate can be small, and the size can be reduced. You can

According to the invention of claim 5, claim 4
In addition to the effect of, the link member and the push rod lever are connected by a front protrusion formed on the push rod lever, and the front protrusion is located below the protrusion of the pedal arm. In addition, since it is bent toward the pedal arm and the protruding portion of the pedal arm is bent toward the push rod lever, the size of the brake pedal device itself in the axial direction of the pedal shaft is relatively small. In addition to being able to reduce the size, when the pedal arm and the push rod lever are separated, the rotations thereof are in the directions away from each other, so that they can be prevented from interfering with each other.

According to the invention of claim 6, claim 5
In addition to the effect of, the link member has a plate member arranged so as to sandwich the projecting portion and the front projecting portion, and the clevis pin connects these plate members, while the slide plate has , A pair of pressing portions projecting downward and spaced from each other, and the pressing portions face both end portions of the clevis pin, so that when the vehicle body member relatively moves rearward, both pressing portions are provided at both end portions of the clevis pin. By pressing, the engagement between the notch and the clevis pin can be more reliably released.

[0020]

[0021]

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

1 to 5, 1 is a pedal bracket having a substantially U-shaped cross section, and 2 is both side walls 1 of the pedal bracket 1.
It is a pedal arm whose upper end is rotatably supported on a pedal shaft 3 fixed to C and 1C, and a pedal pad (not shown) is provided at the lower end. I am urged.

The pedal bracket 1 is formed in a side-reverse L-shape, and its front wall 1A is attached to a dash lower panel 4.
Of the dash upper panel 5 which is fastened and fixed by bolts and nuts (not shown), and the rear end portion of the upper wall 1B is joined to the dash lower panel 4 and protrudes to the vehicle compartment side (rear of the dash lower panel 4). A vehicle body side bracket 6 that is joined and arranged across the lower surface portion, specifically, the lower surface of the dash upper panel 5 and the rear wall, can be relatively moved in the front-rear direction by a bolt 7 and a nut WN (disclosed only in FIG. 3). It is fastened and fixed.

In particular, in this embodiment, the attachment hole of the upper wall 1B of the pedal bracket 1 is formed as an elongated hole as the slide hole 16.

A push rod lever 8 is rotatably supported on the pedal shaft 3 so as to be installed in parallel with the pedal arm 2. The push rod lever 7 has a lower end on a side surface of the dash lower panel 4 on the engine room side. Push rod 9 extended from a master back (not shown) fixed to the
Are connected via a pin 10.

Reference numeral 11 denotes a link member for connecting the pedal arm 2 and the push rod lever 8 to each other.
1 is composed of two plate members 11A and 11A and a clevis pin 12 provided at the upper end portion thereof so as to connect the plate members 11A and 11A. A notch 13 provided by opening a groove in a forward direction at the front end of the protrusion 2B in front of the through hole 2A.
Through the through holes 11B and 11 provided at the lower ends of the plate members 11A and 11A.
B and a through hole 8C provided in a forward projecting portion 8B below the through hole 8A of the pedal shaft 3 of the bush rod lever 8 and above the connecting position of the push rod 9 with the pin 14
The pedal force of the pedal arm 2 is transmitted to a master back (not shown).

Reference numeral 15 denotes a slide plate provided with pressing portions 15A, 15A projecting downward at a predetermined distance from the front side thereof, and the slide plate 15 is the vehicle body side bracket 6 which is a lower surface portion of the dash upper panel 5. When the vehicle body side bracket 6 and the pedal bracket 1, which are the lower surface portion of the dash upper panel 5, are fixedly mounted on the lower surface of the vehicle and are relatively moved in the front-rear direction, the vehicle body side bracket 6 and the pedal bracket 1 are relatively opposed to the pedal bracket 1. By sliding forward, the pressing portions 15A, 15A are moved to the upper end portion of the link member 11, specifically, the plate member 1 of the clevis pin 12.
Both ends projecting in the axial direction (vehicle width direction) from 1A and 11A are pushed forward to disengage the clevis pin 12 and the notch 13 of the pedal arm 2.

The protrusion 2B of the pedal arm 2 in the previous term
Is gently bent toward the push rod lever 8 side, and the front protruding portion 8B of the push rod lever 8 is
Is gently bent toward the side of the pedal arm 2 so that the projecting portions 2B and 8B overlap each other when viewed from above (see FIG. 5).

As a result, the pedal arm 2 and the push rod lever 8 can be installed slightly apart from each other on the pedal shaft 3, so that they can be prevented from interfering with each other when they are disengaged.

Since the plate members 11A and 11A of the link member 11 are positioned so as to sandwich the both protruding portions 2B and 8B, both protruding portions of the link member 11 in the vehicle width direction (the axial direction of the pedal shaft 3). Can be made as small as possible, and the vehicle width direction of the slide plate 15 can be kept small accordingly.

The protrusion amount of the clevis pin 12 from the plate member 12A in the vehicle width direction is set to be larger than that of the pin 14, and the pressing portions 15A and 15A reliably push out the clevis pin 12 when the slide plate 15 slides. Is set to.

2C is a link member when the clevis pin 12 and the notch 13 of the pedal arm 2 are disengaged from each other and the pedal arm 2 is rotated forward or the push rod lever 8 is rotated backward. 15B is a notch portion for avoiding interference that delays the interference with the pedal arm 2.
Is a notch escape portion for preventing interference of the protruding portion 2B when the pedal arm 2 is rotated.

Further, particularly in this embodiment, the slide plate 15 is fixed together with the pedal bracket 1 to the vehicle body side bracket 6 which is the lower surface portion of the dash upper panel 5 by the bolt 7.

6A and 15C are bolt through holes through which the bolts 7 formed on the vehicle body side bracket 6 and the slide plate 15 pass.

Reference numeral 17 in the drawing denotes a stopper for restricting the backward rotation of the pedal arm 2.

According to the structure of the above embodiment, since the pedal arm 2 and the push rod lever 8 are integrally connected via the link member 11 in the normal state, the pedal arm 2 is depressed by operating the pedal arm 2. The arm 2 and the push rod lever 8 rotate integrally, and a master back operation can be performed which is the same as that of a general brake pedal device.

At this time, the rotation direction RD of the pedal arm 2
Since it is in a direction intersecting with the groove direction OD of the notch 13, the stepping operation force does not act in the direction in which the clevis pin 12 comes off.

On the other hand, when the vehicle collides with the front surface, as shown in FIG. 4, the dash lower panel 4 to which the master back (not shown) is fixed is deformed toward the passenger compartment, and the upper wall of the pedal bracket 1 fixed to the dash lower panel 4 is deformed. When a collision load of a predetermined value or more is applied to the fixing point between the lower surface of the vehicle body side bracket 6 which is the lower surface of the dash upper panel 5, the upper wall 1B of the pedal bracket 1 with respect to the upper surface of the dash upper panel 5. Move relatively to the back.

Due to the backward movement of the pedal bracket 1, the slide plate 15 is moved to the pedal bracket 1.
With respect to the link member 11 by pushing the link member 11 forward by moving the notch 13 of the pedal arm 2 relatively.
Then, the link member 11 and the pedal arm 2 are disconnected from the clevis pin 12.

Therefore, since the pedal arm 2 and the push rod lever 8 are separated, the master back (not shown) moves backward, or the dash lower panel 4 is moved.
Even when the push rod 9 of the master back (not shown) moves backward due to the deformation of the vehicle toward the passenger compartment side, the push rod lever 8 only idles and rotates, and the collision load is not input to the pedal arm 2. Therefore, it is possible to prevent the stepped position of the pedal arm 2 from being shifted backward and causing a feeling of strangeness.

In particular, according to this embodiment, the bolt hole for fastening and fixing the upper wall 1B of the pedal bracket 2 is formed in the slide hole 1.
6 is formed as a long hole, and the upper wall 1 of the pedal bracket 1 is formed.
B through the slide hole 16 to the dash upper panel 5
Since it is attached to the lower surface of the vehicle body side bracket 6 which is the lower surface part of the vehicle so as to be relatively slidable in the front-rear direction with respect to a load equal to or more than a predetermined value, the pedal bracket 1 can be relatively moved rearward. As a result, the link member 11 and the pedal arm 2 can be promptly released from the connection.

Further, since the slide plate 15 is fixed together with the pedal bracket 1 to the lower surface of the vehicle body side bracket 6 which is the lower surface portion of the dash upper panel 5 with the bolts 7, the parts management man-hours and the vehicle body can be improved. It is possible to reduce the number of assembly work steps.

Further, the opening groove direction OD of the cutout portion 13 is set lower than the extending direction PD of the protruding portion 2B so that the slide plate 15 can be depressed when the pedal arm 2 is depressed.
If it is made to substantially coincide with the sliding movement direction of, the connection can be released relatively smoothly.

In the above embodiment, the notch 13 is formed on the pedal arm 2 side and the pin 14 is formed on the push rod lever 8 side.
Although the through hole 8C is formed, the notch is formed on the push rod lever 8 side and the through hole is formed on the pedal arm 2 side.
Connect the link member 11 to the clevis pin 12 and the through holes 11B, 1
The position of 1B may be upside down.

In this case, the amount of downward projection of the pressing portions 15A, 15A of the slide plate 15 is increased and the width of the pressing portions 15A, 15A is increased so as not to interfere with the pin 14 positioned on the upper side. Moreover, it is necessary to make the amount of protrusion of the clevis pin 12 positioned on the lower side in the vehicle width direction relatively large so as to easily interfere with the pressing portions 15A, 15A.

In the above embodiment, the pedal arm 2 is used.
Although the protruding portion 8B of the push rod lever 8 is located below the protruding portion 2B, the vertical relationship may be reversed as shown in FIG.

In this case, when the dash lower panel 4 or the like moves backward, the protruding portion 8'B of the push rod lever 8'will rotate downward, so that the protruding portion 8'B.
It is necessary to set both protrusions 2'B and 8'B so that they do not overlap each other in the vehicle width direction so that the protrusion 2'B of the pedal arm 2'will not be pushed by. It becomes a factor in which it becomes larger in the vehicle width direction than the shape.

On the other hand, in the embodiment of FIGS. 1 to 5, when the dash lower panel 4 or the like is moved backward, the protrusions 2B,
8B act in a direction away from each other, so both protrusions 2
Even if B and 8B overlap each other in the vehicle width direction, it is unlikely to cause a problem.

In this case, the operating force from the pedal arm 2'to the push rod lever 8'is the link member 11 '.
It acts in the upward direction on the push direction.

On the other hand, in the embodiments of FIGS. 1 to 5, the input of the normal stepping operation acts on the link member 11 in the pulling direction, which is also advantageous in terms of operation.

Further, the pedal bracket 1 is fixed to the lower surface of the dash upper panel 5, but the invention is not limited to this, and the vehicle body such as a steering member located behind the dash lower panel, for example, extending in the vehicle width direction. It may be a member.

[Brief description of drawings]

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

FIG. 2 is an exploded perspective view of the same embodiment.

FIG. 3 is a side view showing a connected state of the same embodiment.

FIG. 4 is a side view showing the connection release state of the same embodiment.

FIG. 5 is a view in which some of the components shown by arrow A in FIG. 1 or FIG. 3 of the same embodiment are omitted.

FIG. 6 is an exploded perspective view corresponding to FIG. 2 showing another embodiment of the present invention.

[Explanation of symbols]

1 pedal bracket 1A front wall 1B Upper wall 2 pedal arm 3 pedal shaft 4 dash lower panel 5 Dash upper panel (body parts) 8 Push rod lever 9 push rod 11 Link members 12 clevis pin 13 Notch 15 slide plate 16 slide holes

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaharu Ishizuke 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Naoyuki Sugiyama 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) References JP-A-9-286256 (JP, A) JP-A-11-20493 (JP, A) JP-A-11-5517 (JP, A) JP-A-11-115699 (JP, A) 51-136225 (JP, U) 52-26862 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60T 7/06

Claims (6)

(57) [Claims] 1. A pedal bracket fixed to a dash panel, a pedal arm rotatably supported by a pedal shaft provided on the pedal bracket, and a master back which is rotatably supported by the pedal shaft. in and a push rod lever which is connected to the push rod structure, the front wall of the pedal bracket is fixed to the dash lower panel, the lower surface portion of the vehicle body member positioned an upper wall of the pedal bracket in the rear of the dash lower panel While it is fixed so as to be relatively movable in the front-rear direction, a forwardly open notch is provided at the front end of either the pedal arm or the push rod lever, and the notch engages with the clevis pin provided on the link member. Connect the pedal arm or push rod lever to the link member, and connect the link member. The pedal arm is connected to the push rod lever via the pedal arm so that the pedaling force of the pedal arm is transmitted to the master back via the push rod. A brake pedal device for an automobile, comprising a slide plate that pushes the link member forward to disengage the clevis pin from the cutout portion of the pedal arm or the push rod lever when the slide plate moves relative to each other in the direction. 2. An elongated slide hole is formed in the upper wall of the pedal bracket, and the upper wall of the pedal bracket is passed through the slide hole to the lower surface of the vehicle body member in the front-back direction with respect to a load of a predetermined value or more. The brake pedal device for an automobile according to claim 1, wherein the brake pedal device is fixed so as to be relatively slidable relative to. 3. The brake pedal device for an automobile according to claim 1, wherein the slide plate is fixed together with the pedal bracket to a lower surface portion of the vehicle body member. 4. The brake pedal device for an automobile according to claim 1, wherein the cutout portion is formed in a protruding portion that protrudes forward of the pedal shaft through hole of the pedal arm. 5. The link member and the push rod lever are connected by a front protrusion formed on the push rod lever, and the front protrusion is located below the protrusion of the pedal arm. The brake pedal device for an automobile according to claim 4, wherein the brake pedal device is bent toward the pedal arm, and the protrusion of the pedal arm is bent toward the push rod lever. 6. The link member has a plate member arranged so as to sandwich the protrusion and the front protrusion, and the clevis pin connects these plate members, while the slide plate has The brake pedal device for an automobile according to claim 5, further comprising a pair of pressing portions projecting downward and spaced apart, the pressing portions facing both ends of the clevis pin.