JPH1059146A - Pedal displacement control structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control displacement of a tread of a pedal for a vehicle when external force of a specified value or more is applied from forward the vehicle. SOLUTION: A slide bracket 44 is fixed on the back end side of a pedal bracket 26 for supporting a brake pedal 10, and the slide bracket 44 is detachably connected to a slide plate 50. On a pedal support part 56, an auxiliary bracket 72 provided with a pressure part 72D is installed. This pressure part 72D is closely disposed to a push rod 66 in a contactless condition. When external force of a specified value or more is applied from forward the vehicle, therefore, the auxiliary bracket 72 pushes the push rod 66 to bend it, so traction force ahead the vehicle is provided to the pedal support part 56, thereby displacement quantity of a pedal pad 58 roughly ahead the vehicle can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a pedal displacement control structure for a vehicle.

[0002]

2. Description of the Related Art Conventionally, various measures have been taken as a countermeasure when an external force exceeding a predetermined value acts from the front of a vehicle. As an example of this kind of countermeasure, there is a configuration disclosed in Japanese Utility Model Laid-Open No. 1-73664.

[0003] In brief, as shown in FIG. 13, in the configuration disclosed in this publication, a steering column 402 covering a steering shaft 400 includes a tilt bracket 408 including an upper plate member 404 and a pair of side plate members 406, and A shaft 410 penetrating between these side plate members 406 and supporting a lower edge of the steering column 402 is supported on the vehicle body side.

Further, the tilt bracket 408 described above is used.
A knee protector 412 having a substantially circular arc shape and capable of being elastically deformed is provided below. The knee protector 412 is elastically supported on the lower edge side of the steering column 402 via an elastically deformable stay 414.

According to the above structure, when an external force equal to or more than a predetermined value acts from the front of the vehicle, the occupant attempts to inertia move toward the front of the vehicle, and accordingly, the legs of the occupant flex in the same direction with the knee as a starting point. Try to inertia move to. For this reason,
If the knee protector 412 is not provided, the occupant's knee may contact the tilt bracket 408. However, if knee protector 412 is arranged below tilt bracket 408 as described above, the occupant's knee only comes into contact with knee protector 412.

It is considered that such a configuration in which the knee protector 412 is provided is effective as a countermeasure when an external force equal to or more than a predetermined value acts from the front of the vehicle. However, as a countermeasure in relation to the occupant's legs. It is also possible to approach from a different viewpoint, and it is important from the viewpoint of multiple protection that the countermeasures in relation to the occupant's legs be multifaceted.

As a result of repeated experiments conceived from such a viewpoint, the inventor of the present invention focused on the deformation and displacement behavior of the body panel and the like when an external force of a predetermined value or more was applied from the front of the vehicle, such as a brake pedal. It has been concluded that controlling the displacement of the vehicle pedal is also a very effective measure.

The present invention has been made in view of the above findings, and has as its object to provide a vehicle pedal displacement control structure capable of controlling displacement of a tread surface of a vehicle pedal when an external force of a predetermined value or more acts from the front of the vehicle. is there.

[0009]

According to a first aspect of the present invention, there is provided a vehicle pedal displacement control structure which is displaced substantially toward the rear of the vehicle when an external force of a predetermined value or more acts on the front of the vehicle. A pedal bracket having a front end coupled to a vehicle body-side component, and a rear end coupled to a second vehicle body-side component disposed substantially rearward of the first vehicle-side component; A suspension-type vehicle pedal on which a rotating shaft portion serving as a swing center is supported; transmission means for transmitting a pedaling force applied to a tread surface of the vehicle pedal to a master cylinder for hydraulic pressure conversion; Release means for releasing the connection between the rear end side of the pedal bracket and the second vehicle body side component during the action of the pedal, and releasing the rear end side of the pedal bracket from the second vehicle body side component; The rear end of the bracket When the tread surface of the vehicle pedal is displaced substantially forward by the displacement of the guide means for displacing the vehicle downward and the displacement of the rear end of the pedal bracket to the substantially vehicle lower side and the accompanying deformation of the transmission means. And a deformation assisting means for increasing the amount of displacement of the tread surface of the vehicle pedal substantially toward the front side by assisting the deformation of the transmission means.

According to a second aspect of the present invention, there is provided the vehicle pedal displacement control structure according to the first aspect, wherein the deformation assisting means transmits when an external force of a predetermined value or more acts on the front portion of the vehicle. Provided at a portion where the relative distance to the means changes,
Further, it is characterized in that the transmission means is caused to bend and deform.

According to a third aspect of the present invention, there is provided the vehicle pedal displacement control structure according to the first aspect, wherein the deformation assisting means is provided when an external force greater than a predetermined value acts on the front portion of the vehicle. It is characterized in that the transmitting means is contracted and deformed by assisting the application of an axial compressive load to the transmitting means.

According to the first aspect of the present invention, when an external force equal to or more than a predetermined value acts on the front portion of the vehicle, the first vehicle body side component is displaced substantially toward the rear side of the vehicle. Therefore, the pedal bracket connected to the first vehicle body-side component member at the front end side is also displaced in the same direction, and at this time, the rear end side of the pedal bracket and the second vehicle body-side component member are connected by the release means. The state is released. For this reason, the rear end side of the pedal bracket is guided by the guide means and is displaced substantially downward of the vehicle.
Accordingly, when the pedal bracket is viewed from the side, the pedal bracket is rotationally displaced substantially toward the front of the vehicle while being displaced substantially toward the rear of the vehicle. Further, with the rotational displacement of the pedal bracket, the transmission means for transmitting the pedaling force applied to the tread surface of the vehicle pedal to the master cylinder is deformed by bending or the like. As a result, the tread surface of the vehicle pedal is displaced substantially forward by the displacement of the rear end of the pedal bracket toward the substantially lower side of the vehicle and the accompanying deformation of the transmission means.

In the present invention, since the deformation assisting means is provided to assist the deformation of the transmission means when the transmission means is deformed, the transmission means is easily deformed and the tread surface of the vehicular pedal is deformed. The amount of displacement substantially toward the front of the vehicle is increased. As a result, according to the present invention, the displacement of the tread surface of the vehicle pedal when an external force equal to or more than a predetermined value acts on the front portion of the vehicle becomes a desired one, that is, the tread surface of the vehicle pedal is substantially in front of the vehicle. It is possible to perform control such that the displacement is large.

According to the second aspect of the present invention, the deformation assisting means is provided at a portion where the relative distance to the transmitting means changes when an external force of a predetermined value or more acts on the front portion of the vehicle,
In addition, since the deformation assisting means causes the transmission means to bend and deform, the bending deformation can be reliably and easily caused to the transmission means. That is, according to the present invention, the bending deformation of the transmission means can be used as the traction force for effectively displacing the tread surface of the vehicle pedal substantially forward of the vehicle. As a result, also in the present invention, it is possible to effectively control the displacement of the tread surface of the vehicle pedal when the external force equal to or more than the predetermined value acts on the front portion of the vehicle so that the displacement becomes desired.

According to the third aspect of the present invention, when an external force equal to or more than a predetermined value acts on the front portion of the vehicle, the transmission means is assisted by applying an axial compressive load, and the transmission means is subjected to contraction deformation. Because of this configuration, it is possible to surely and easily cause contraction deformation of the transmission means. That is, according to the present invention, by causing the transmitting means to contract and deform, the reaction force from the transmitting means to act on the vehicle pedal is effectively absorbed, and thereby the tread surface of the vehicle pedal is substantially in front of the vehicle. The displacement to the side can be facilitated and smoothed. As a result, also in the present invention, it is possible to effectively control the displacement of the tread surface of the vehicle pedal when the external force equal to or more than the predetermined value acts on the front portion of the vehicle so that the displacement becomes desired.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] A first embodiment will now be described with reference to FIGS.
A first embodiment according to an embodiment of the present invention will be described.

FIG. 1 schematically shows a peripheral structure of a suspension type brake pedal 10 as a vehicle pedal, and FIGS. 2 and 3 show enlarged views of necessary parts. I have. Hereinafter, the overall configuration of the peripheral structure including the brake pedal 10 will be described with reference to these drawings.

A dash panel 16 as a first vehicle-side component is disposed substantially vertically at a position separating the engine room 12 and the vehicle interior space 14. The upper end of the dash panel 16 is fixed by spot welding or the like to a front surface of a cowl inner panel (not shown), which is arranged with the vehicle width direction as a longitudinal direction and forms a part of the cowl. The lower end of the dash panel 16 is fixed to a floor panel (not shown) by spot welding or the like.

On the front side of the dash panel 16 described above, a brake booster 20 functioning as a pedaling force increasing means for increasing the pedaling force of the occupant applied to the brake pedal 10, and a pressure increased by the brake booster 20. A hydraulic pressure conversion master cylinder 22 for converting to hydraulic pressure, and a reservoir tank (not shown) for storing and replenishing brake fluid following a change in volume of the hydraulic system are integrally provided.

On the other hand, on the rear side of the dash panel 16,
A pedal bracket 26 for swingably supporting the brake pedal 10 is provided. The pedal bracket 26 is
A base plate portion 28 constituting a mounting seat surface to the dash panel 16, and a pair of side plate portions 30 extending from the base plate portion 28 substantially parallel to the vehicle rear side.
And a top plate portion (not shown) connecting the upper edges of the side plate portions 30 facing each other. Therefore, the pedal bracket 26 as a whole is formed in a U-shaped cross section, which is substantially long in the vehicle front-rear direction and has an open bottom surface. An opening 34 for reducing rigidity in the vehicle longitudinal direction is formed at a predetermined position on the front end side of each side plate portion 30, and rigidity in the vehicle longitudinal direction is partially increased on the upper edge side. Is formed.

At the four front corners of the base plate portion 28 of the pedal bracket 26, cylindrical collars 40 through which stud bolts 38 protruding from the brake booster 20 are inserted are fixed. Base plate part 2
8 is a state in which the collar 40 is brought into contact with the dash panel 16 and a nut 42 is screwed into a stud bolt 38 inserted therein.
It is fixed to. Thereby, the pedal bracket 26
Is connected to the dash panel 16. In addition, a weld nut is welded to the front surface of the dash panel 16 in advance, and the mounting bolt is attached to the base plate portion 28.
It is also possible to screw in from the side and fix it. A dash insulator (not shown) used as a sound insulating material is interposed between the dash panel 16 and the base plate portion 28.

A slide bracket 44 having a substantially U-shaped cross section is fixed to the rear end of the pedal bracket 26 in a partially overlapped state. As shown in FIG.
In the top wall portion 44A of the slide bracket 44, a slit 46 as a detaching means including a narrow portion 46A having a narrow opening width and a wide portion 46B communicating with the narrow portion 46A and having a wide opening width. Are formed. A front end of a slide plate 50 is disposed directly above the slide bracket 44 so as to protrude from the instrument panel reinforcement 48 substantially toward the front of the vehicle. The instrument panel reinforcement 48 is a high-strength member arranged with the vehicle width direction as a longitudinal direction, and the slide plate 50 is also set to a predetermined high strength. Then, the fixing bolt 52 is inserted through the narrow portion 46A of the slit 46 and the front end of the slide plate 50 from the back side of the top wall portion 44A of the slide bracket 44 and screwed with the nut 54, so that the pedal bracket 26 The rear end side is connected to the slide plate 50.

Further, the narrow portion 4 of the slit 46 described above is used.
The opening width of 6A is set slightly larger than the shaft diameter of the fixing bolt 52 and smaller than the head diameter, and the opening width of the wide portion 46B is set larger than the head diameter. Therefore, the narrow portion 4 where the fixing bolt 52 is at the assembly position is located.
When the pedal bracket 26 is located at 6A, the rear end side (slide bracket 44) of the pedal bracket 26 remains connected to the slide plate 50, but is fixed by the pedal bracket 26 being displaced substantially rearward of the vehicle. Bolt 5
When the second bracket 2 is relatively positioned at the wide portion 46 </ b> B, the rear end side of the pedal bracket 26 is separated from the slide plate 50. Further, the lower end surface of the slide plate 50 is inclined at a predetermined angle toward the lower side of the vehicle, and the inclined surface 50A is used as a slide guide surface for the pedal bracket 26 with the top wall portion 44A of the slide bracket 44.

The suspension type brake pedal 10 is disposed between the pair of side plate portions 30 of the pedal bracket 26 described above. The brake pedal 10 includes a pedal support portion 56 formed by appropriately bending a narrow plate material,
A pedal pad 58 is provided at the lower end of the pedal support portion 56 and serves as a tread surface to which an occupant's treading force is applied. A return spring (not shown) is locked to the pedal support portion 56 of the brake pedal 10, and the brake spring 10 is constantly biased by the return spring in a direction to return to the initial position.

A rotary shaft 60 is provided at the upper end of the pedal support 56 of the brake pedal 10, and the rotary shaft 60 is supported by a pair of side plate portions 30 of the pedal bracket 26. . It should be noted that a brief description of an example of the configuration of the rotary shaft 60 will be given below.
A substantially cylindrical pedal boss was inserted into a through hole formed at the upper end of the boss, cylindrical bushes were respectively fitted to both ends of the pedal boss, and a cylindrical collar was inserted into both bushes. Thereafter, the mounting bolt 62 is inserted from the outside of the one side plate portion 30, and the nut 64 is screwed from the outside of the other side plate portion 30 via a washer (not shown) to form the rotating shaft portion 60. .

Further, a tip end of a push rod (operating rod) 66 as a transmission means projecting from the brake booster 20 and penetrating the dash panel 16 is connected to an intermediate portion of the pedal support portion 56 of the brake pedal 10. . Specifically, a clevis 68 having a substantially U-shaped cross section is attached to the tip of the push rod 66. Inside the clevis 68, a pedal support 56 is provided.
Are arranged in an inserted state, the clevis pin 70 penetrates both sides of the clevis 68 and the pedal support 56, and a retaining ring, a β pin or the like is fitted to the penetrating end and the push rod is prevented from being pulled out. The pedal 66 and the pedal support 56 are connected to be relatively rotatable.

Here, as shown in FIGS. 1 and 2,
At a predetermined position of the pedal support portion 56 of the brake pedal 10 (in the vicinity of an intermediate portion between the rotating shaft portion 60 and the clevis 68), as a deformation assisting means projecting obliquely forward and downward toward the push rod 66 side. Are attached. As shown in FIG. 4A in an enlarged manner, the auxiliary bracket 72 is formed by appropriately punching and bending a single plate. Specifically, the auxiliary bracket 72 includes a pair of side plate portions 72A arranged in parallel with each other, and a pair of side plate portions 72A extending integrally from the rear ends of the side plate portions 72A to the rear side and the pedal support portions 5A.
6 and a connecting portion 72C that connects the lower end portions of the side plate portions 72A to each other. In the auxiliary bracket 72, both the mounting portion 72B and the pedal support portion 56 are jointly fastened with the bolt 74 and the nut 76 (may be screws or welding) in a state where the pedal support portion 56 is sandwiched between the pair of mounting portions 72B. As a result, it is fixed to the pedal support 56.

Further, at the front end of the above-mentioned auxiliary bracket 72, a substantially "Ω" -shaped pressing portion 72D is formed integrally with the side plate portion 72A. This pressing portion 72D
Is slightly separated from the outer peripheral surface of the push rod 66 in the assembled state. Therefore, no sliding resistance is applied to the push rod 66 during a normal brake operation.

In this embodiment, the auxiliary bracket 7
A pressing portion 72 having a substantially “Ω” shape is provided at the tip of the second side plate portion 72A.
D is integrally formed, but is not limited to this.
As shown in FIG. 4B, a configuration may be adopted in which the pressing pin 78 is pivotally supported at the tip of the side plate portion 72A, or FIG.
As shown in (C), a configuration may be adopted in which the pressing roller 80 is pivotally supported at the tip of the side plate portion 72A.

Further, the pressing portion 72D is substantially "Ω"
The reason why the pressing member 78 and the pressing roller 80 are formed into a shape is to cause the relative sliding of the pressing portion 72D and the like to the push rod 66 smoothly when a load is applied. .

Next, the operation and effect of this embodiment will be described. As shown in FIG. 5, when the brake is not operated, the brake pedal 10 is held at the initial position by the urging force of the return spring. When the occupant applies a pedaling force to the pedal pad 58 of the brake pedal 10 from this state, the brake pedal 10
The push rod 66 is swung about substantially forward of the vehicle, and is pushed substantially forward of the vehicle. Thereby, the pedaling force of the occupant applied to the pedal pad 58 is transmitted to the brake booster 20 via the push rod 66 and is increased, and then converted into hydraulic pressure by the master cylinder 22.

On the other hand, when an external force equal to or more than a predetermined value acts from the front of the vehicle, the load at that time is input to the dash panel 16 via the master cylinder 22 and the brake booster 20. For this reason, as shown by the two-dot chain line in FIG.
May be displaced.

In this case, since the slide plate 50 to which the rear end side of the pedal bracket 26 is coupled and the instrument panel reinforcement 48 to which the slide plate 50 is attached are both high-strength members, the pedal bracket 26 is attached to the rearward displacement of the dash panel 16. Accordingly, a load substantially toward the rear side of the vehicle is input, while a reaction force at that time is input as a load substantially toward the front side of the vehicle from the instrument panel reinforcement 48 side.
In addition, since the openings 34 are formed in the pair of side plate portions 30 of the pedal bracket 26, the pedal bracket 26 has a low rigidity substantially in the vehicle longitudinal direction. For these reasons, the pedal bracket 26 buckles substantially in the vehicle longitudinal direction. At this time, the pedal bracket 26
A bead 36 is provided on the upper edge side of the pair of side plate portions 30.
Is formed, the rigidity of the upper edge side of the side plate portion 30 in the substantially vehicle longitudinal direction is partially increased. Therefore, the pedal bracket 26 as a whole will buckle in a substantially “H” shape in side view.

Further, at this time, since a load substantially toward the vehicle rear side is input to the slide bracket 44 fixed to the rear end side of the pedal bracket 26, the slide bracket 44 is substantially moved with respect to the slide guide plate 50. Sliding slightly toward the rear of the vehicle. Therefore, the fixing bolt 52 located at the narrow portion 46A of the slit 46 is relatively located at the wide portion 46B of the slit 46. Therefore,
The head of the fixing bolt 52 comes off from the wide portion 46B of the slit 46, and the slide bracket 44 is separated from the slide plate 50.

The detached slide bracket 44 is guided by the inclined surface 50A of the slide plate 50 and slides on the inclined surface 50A substantially toward the rear of the vehicle and substantially below the vehicle. As a result, the pedal bracket 26 is rotationally displaced as shown by a two-dot chain line in FIG. When the external force of a predetermined value or more acts from the front of the vehicle, the rear end side of the pedal bracket 26 is detached from the slide plate 50, so that the pedal bracket 26 and the instrument panel reinforcement 48 are moved through the slide bracket 50. It is possible to prevent a relatively large load from being input.

The pedal bracket 26 is rotated and displaced.
The push-out protruding from the brake booster 20
The shroud 66 is pressed substantially below the vehicle. others
Therefore, the push rod 66 rotates around the base end. You
That is, the push rod 66 is connected to the brake booster 20.
Position that intersects the axis from the normal state located on the axis of
The state changes by rotating to. Imitating this
This will be described with reference to FIG. 6 which is schematically shown.
The brake pedal 10 is equivalent to the pedal bracket 26
Link A₁, Link B₁As well as push rod 66
Link C ₁Supported by parallel links
It can be seen that it is in a state. From this state,
When the above external force acts from the front of the vehicle, the slide
The link A₁Is phosphorus
Link A rotates around the rotation center P_TwoReach the position
Also, the support point Q on the rear end side of the pedal bracket₁To Q_TwoRank
Position. Accordingly, link C₁Also link
Link C rotating around C rotation center R_TwoWhen you reach the position
Both are link C attachment points S₁S_TwoTo the position
You. By such link motion, brake pedal
The dull 10 itself is rotationally displaced substantially toward the front of the vehicle, and as a result
The dull pad 58 moves from the position shown by the solid line to the position shown by the dashed line.
And it is displaced substantially forward of the vehicle.

Here, in this embodiment, in addition to the above, since the auxiliary bracket 72 is set on the pedal support 56, the pressing portion 72D of the auxiliary bracket 72 is connected to the link C when the pedal support 56 is rotationally displaced. ₁ (Push rod 6
6) The intermediate part in the axial direction is pressed substantially forward and downward of the vehicle.
Therefore, link C ₁ does not become link C ₂ ,
It is bent at an axially intermediate portion to link C _3. Thus, the bending force at the time acts as a pulling force substantially toward the front of the vehicle with respect to the pedal support 56, actually link C attachment point S ₁ is displaced to S ₃ is substantially vehicle front side than the S ₂ You. As a result, the pedal pad 58 is displaced from the position shown by the solid line to the position shown by the two-dot chain line, further to the position shown by the two-dot chain line, substantially toward the front of the vehicle.

As described above, in this embodiment, when an external force equal to or more than a predetermined value acts from the front of the vehicle, the push rod 6
An auxiliary bracket 72 is provided on the pedal support portion 56 for applying a tractive force to the pedal support portion 56 substantially toward the front side by pressing and bending the intermediate portion in the axial direction from above on the pedal support portion 56. , The amount of displacement of the pedal pad 58 substantially toward the front of the vehicle can be increased. In other words, according to the present embodiment, the displacement of the pedal pad 58 of the brake pedal 10 when the external force equal to or more than the predetermined value acts on the front portion of the vehicle is a desired one, that is, the pedal pad of the brake pedal 10 58 can be controlled so as to be largely displaced substantially toward the front of the vehicle. As a result, the knee of the leg due to the inertial movement of the occupant when the external force equal to or more than the predetermined value acts from the front of the vehicle can be suppressed, and the occupant's knee can be moved away from the steering column. .

In this embodiment, the auxiliary bracket 7
2 is attached to the pedal support 56, but it is not always necessary to attach it to the pedal support 56. When an external force equal to or more than a predetermined value acts from the front of the vehicle, the relative distance to the push rod 66 as the transmission means is reduced. What is necessary is just to be provided in the part which changes. Therefore, for example, as shown in FIG. 7, a configuration may be adopted in which the auxiliary bracket 72 is attached to the side plate portion 30 of the pedal bracket 26. In this case, the auxiliary bracket 72 may be bent at an appropriate position so that the pressing portion 72D is disposed close to the push rod 66. In addition to arranging the auxiliary bracket 72 on the pedal bracket 26,
It may be arranged on the slide bracket 44.

An auxiliary bracket may be provided at the lower end of the base plate portion 28 toward the push rod 66, and the push rod 66 may be bent upward from below.

Further, in this embodiment, the push rods 66 having the same diameter are used. However, the present invention is not limited to this. As shown in FIG. Push rod 82 provided may be used. In this case, the auxiliary bracket 7 is located immediately above the reduced diameter portion 82A.
By disposing the push rod 2, the push rod 82 bends easily and smoothly from the reduced diameter portion 82A when the push bracket 82 receives a pressing force from above by the auxiliary bracket 72. There is an advantage that the traction force of the vehicle increases.

In addition, in the above-described embodiment, the pedal bracket 26 and the slide bracket 44 fixed to the rear end side are the “pedal bracket” in the present invention.
And the instrument panel reinforcement 48 and the slide plate 50 fixed thereto correspond to the “second vehicle body-side component” in the present invention, and the “second vehicle body-side component”
The inclined surface 50A of the slide plate 50 which also has a function as a function corresponds to the "guide means" in the present invention. [Second Embodiment] A second embodiment according to one embodiment of claims 1 and 3 will be described below with reference to FIGS. Note that the same components as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

FIG. 9 shows a suspension type brake pedal 10.
Is schematically shown, and FIG. 10 shows an enlarged state of a main part. As shown in these drawings, in the present embodiment, an auxiliary bracket 100 as a deforming auxiliary means having a triangular shape in side view and a U-shaped cross section is attached to the base plate portion 28 of the pedal bracket 26. The auxiliary bracket 100 is disposed at a position immediately below a valve body 102 which is disposed at an axial center of a power piston (not shown) which projects from the brake booster 20 and penetrates the base plate portion 28. The valve body 102 is a rigid body having a substantially cylindrical shape, and a push rod 104 as transmission means is disposed at an axial center thereof. The valve body 102 is covered by a valve body guard 106 made of an elastic material.

Further, as shown in FIG. 11, in this embodiment, the push rod 104 has a double pipe structure. That is, the push rod 104 is constituted by a cylindrical outer rod 108 and a rod-shaped (or cylindrical) inner rod 110 disposed partially inserted in the outer rod 108. Further, the outer rod 108 and the inner rod 110 are connected by a shear pin 112 at these overlapping portions. The shear pin 112 does not shear under the load applied during a normal brake operation, but is set to such a strength that it shears when an external force of a predetermined value or more is applied from the front of the vehicle.

According to the above configuration, when an external force equal to or more than a predetermined value acts from the front of the vehicle, the slide bracket 44 of the pedal bracket 26 separates from the slide plate 50 as in the above-described embodiment, and is substantially on the rear side of the vehicle. Sliding almost downward of the vehicle causes rotational displacement. Accordingly, an axial compressive load also acts on the push rod 104 to some extent, so that the shear pin 112 is sheared and the inner rod 110 slightly enters into the outer rod 108 (that is, contracts and deforms). As a result, the pedal pad 58 of the brake pedal 10 is displaced by a predetermined amount substantially toward the front of the vehicle.

Here, in the present embodiment, the auxiliary bracket 100 is disposed immediately below the valve body 102.
When the push rod 104 and the valve body 102 are deformed substantially toward the lower side of the vehicle and try to rotate (see the two-dot chain line in FIG. 5) in the same manner as in the above-described embodiment, the valve body 102 interferes with the auxiliary bracket 100. Inhibit its deformation. For this reason, the valve body 102 does not deform substantially to the lower side of the vehicle, while the pedal bracket 26 is rotationally displaced substantially to the lower side and to the lower side of the vehicle as described above. A larger axial compressive load acts. Therefore, the reaction force acting on the pedal support portion 56 from the push rod 104 is effectively absorbed, and the amount of the inner rod 110 entering the outer rod 108 increases. As a result, the amount of displacement of the pedal pad 58 substantially toward the front of the vehicle increases.

As described above, in this embodiment, when an external force equal to or more than a predetermined value acts from the front of the vehicle, the valve body 1
By arranging the auxiliary bracket 100 directly below the 02,
Since the configuration is such that the axial compressive load acting on the push rod 104 is increased, the amount of displacement of the pedal pad 58 substantially toward the front of the vehicle when the external force acts can be increased. In other words, according to the present embodiment, the displacement of the pedal pad 58 of the brake pedal 10 when the external force equal to or more than the predetermined value acts on the front portion of the vehicle is a desired one, that is, the pedal pad of the brake pedal 10 58 can be controlled so as to be largely displaced substantially toward the front of the vehicle. As a result, also in the present embodiment, the bending of the knees of the legs due to the inertial movement of the occupant when the external force equal to or more than the predetermined value acts from the front of the vehicle can be suppressed, and the knees of the occupant's legs can be steered. You can keep it away from the column.

In this embodiment, the push rod 1
04 has a double-pipe structure with an outer rod 108 and an inner rod 110 and a structure in which both are connected by a shear pin 112, thereby achieving the contraction structure of the push rod 104. However, the present invention is not limited to this. Any structure can be applied as long as the structure can compress the push rod by applying a compressive load. For example, as shown in FIG. 12, in a push rod 114 as a transmission means including the outer rod 108 and the inner rod 110, the outer rod 108 bites into the outer peripheral portion of the inner rod 110 by compressing the outer periphery of the end portion of the outer rod 108. The aperture portion 116 may be formed. In this case, when a relatively large axial compressive load acts on the push rod 114, the throttle portion 116
Is plastically deformed, so that the inner rod 110 enters the outer rod 108.

In the above-described embodiment, the present invention is applied to a suspended main brake pedal.
The application object of the present invention is not limited to this, and is also applicable to a suspension type clutch pedal.

In this embodiment, the slit 46 is formed in the slide bracket 44 and the slit 4 is formed.
6, the slide bracket 44 is detached from the slide plate 50. However, the present invention is not limited to this, and when a load equal to or more than a predetermined value is input, the rear end side of the pedal bracket 26 is separated from the slide plate 50. Any configuration that can be separated is applicable. For example, various configurations can be applied, such as joining the slide bracket 44 and the slide plate 50 with a shear pin that is sheared by a load equal to or more than a predetermined value.

[0051]

As described above, in the vehicle pedal displacement control structure according to the first aspect of the present invention, the rear end of the pedal bracket is displaced substantially downward of the vehicle, and the deformation of the transmission means is thereby changed. Deformation assisting means for increasing the amount of displacement of the tread surface of the vehicle pedal substantially toward the front side by assisting the deformation of the transmission means when the tread surface of the vehicle pedal is substantially displaced toward the front side of the vehicle. Therefore, there is an excellent effect that the displacement of the tread surface of the vehicle pedal can be controlled when an external force equal to or more than a predetermined value acts from the front of the vehicle.

According to a second aspect of the present invention, in the vehicle pedal displacement control structure according to the first aspect, the deformation assisting means transmits when an external force of a predetermined value or more acts on the front portion of the vehicle. It is provided at a portion where the relative distance to the means changes, and since the transmission means causes bending deformation, the transmission means can reliably and easily cause bending deformation,
This has an excellent effect that the displacement of the tread surface of the vehicle pedal can be effectively controlled to a desired value when an external force equal to or more than a predetermined value acts on the front portion of the vehicle.

According to a third aspect of the present invention, there is provided a vehicle pedal displacement control structure according to the first aspect, wherein the deformation assisting means transmits when an external force of a predetermined value or more acts on the front portion of the vehicle. Assisting the means to apply an axial compressive load to cause the transmitting means to contract and deform, so that the transmitting means can cause contracting deformation reliably and easily,
This has an excellent effect that the displacement of the tread surface of the vehicle pedal can be effectively controlled to a desired value when an external force equal to or more than a predetermined value acts on the front portion of the vehicle.

[Brief description of the drawings]

FIG. 1 is a side view showing an overall configuration of a vehicle pedal displacement control structure according to a first embodiment.

FIG. 2 is an enlarged side view showing the auxiliary bracket shown in FIG. 1 in an enlarged manner.

FIG. 3 is an enlarged perspective view showing a detachment configuration of a slide bracket and a slide plate shown in FIG. 1;

FIG. 4 is a sectional view showing a configuration of a pressing portion of the auxiliary bracket shown in FIG. 1;

FIG. 5 is a side view showing a state before an external force equal to or more than a predetermined value acts from the front of the vehicle and a state after the external force acts on the vehicle in the first embodiment.

FIG. 6 is a schematic diagram for explaining the behavior of each part before and after an external force is applied.

FIG. 7 is a side view corresponding to FIG. 2, showing an embodiment in which an auxiliary bracket is provided on a pedal bracket side.

FIG. 8 is a side view showing a push rod provided with a reduced diameter portion for facilitating bending deformation.

FIG. 9 is a side view showing the overall configuration of a vehicle pedal displacement control structure according to a second embodiment.

FIG. 10 is an enlarged side view showing the auxiliary bracket shown in FIG. 9 in an enlarged manner.

11 is a cross-sectional view illustrating a contraction structure of the push rod illustrated in FIG.

FIG. 12 is a sectional view of a push rod showing another contraction structure.

FIG. 13 is a perspective view showing a conventional structure.

[Explanation of symbols]

Reference Signs List 10 brake pedal (vehicle pedal) 16 dash panel (first body side component member) 22 master cylinder 26 pedal bracket 44 slide bracket (pedal bracket) 46 slit (release means) 48 instrument panel reinforcement (second body side component member) 50) Slide plate (second body side component member) 50A Inclined surface (guide means) 58 Pedal pad (tread surface) 60 Rotary shaft 66 Push rod (transmission means) 72 Auxiliary bracket (deformation auxiliary means) 82 Push rod ( Transmission means) 100 Auxiliary bracket (deformation assistance means) 104 Push rod (Transmission means) 114 Push rod (Transmission means)

Claims (3)

[Claims] 1. A front end side is coupled to a first vehicle body side component member which is displaced substantially rearward when an external force equal to or more than a predetermined value acts on the vehicle front portion, and the first vehicle body side component member is displaced from the first vehicle body side component member. A pedal bracket in which a rear end side is coupled to a second vehicle body side component member disposed substantially on the vehicle rear side; and a suspension type vehicle pedal in which a rotary shaft portion serving as a swing center is supported by the pedal bracket. A transmitting means for transmitting a treading force applied to the tread surface of the vehicular pedal to a master cylinder for hydraulic pressure conversion; and a coupling state between a rear end side of the pedal bracket and a second vehicle body side component when the external force acts. Release means for releasing the rear end side of the pedal bracket from the second vehicle body-side component member, guide means for displacing the rear end side of the released pedal bracket substantially below the vehicle, End side approximate car When the tread surface of the vehicle pedal is displaced substantially toward the front side of the vehicle due to the downward displacement and the accompanying deformation of the transmission means, the tread surface of the vehicle pedal is substantially assisted by assisting the deformation of the transmission means. A deformation assisting means for increasing the amount of displacement toward the front of the vehicle, and a pedal displacement control structure for a vehicle, comprising: 2. The deformation assisting means is provided at a portion where a relative distance from the transmission means changes when an external force of a predetermined value or more acts on a front portion of the vehicle, and causes bending deformation of the transmission means. The vehicle pedal displacement control structure according to claim 1, wherein: 3. The deformation assisting means assists in applying an axial compressive load to the transmission means when an external force equal to or more than a predetermined value acts on the front portion of the vehicle, and causes the transmission means to contract and deform. The vehicle pedal displacement control structure according to claim 1, wherein: