JPH10175568A - Pedal support structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate the rear end side of a pedal bracket from the car body side through simple constitution when an external force exceeding a given value is exerted from the front of a vehicle and besides to generate a stable separation load. SOLUTION: Floating bosses 52 and 54 are respectively formed at a slide bracket 44, arranged on the rear end side of a pedal bracket 26 and a slide plate 50 being a mounting mate corresponding thereto. The floating bosses 52 and 54 are intercoupled through spot welding. Further, the surface direction of the coupling surface is set in a manner to approximately coincide with the input load exerting direction (the direction F) to the pedal bracket 26. Thus, when an external force exceeding a given value is exerted from the front of a vehicle, a shearing load is effectively inputted to the coupling surface rigidity of which is reduced compared with a periphery. This structure separates the slide bracket 44 from the slide plate 50 through simple constitution and also stabilizes a separation load.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vehicle pedal support structure.

[0002]

2. Description of the Related Art Various proposals have conventionally been made as countermeasures 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] Briefly, as shown in FIG.
In the configuration disclosed in this publication, the steering column 402 covering the steering shaft 400 is
04 and a pair of side plate members 406, a tilt bracket 408, and a shaft 41 penetrating between the side plate members 406 and supporting a lower edge of the steering column 402.
0 supports the vehicle.

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.

In view of the support structure for a vehicle pedal from such a viewpoint, there has been a technique for detaching the rear end of the pedal bracket from the vehicle body side when an external force of a predetermined value or more acts from the front of the vehicle. Utilizing this technique to control the displacement of the vehicle pedal is considered to be an effective means.

In view of the above, the present invention allows the rear end side of the pedal bracket to be detached from the vehicle body side when an external force of a predetermined value or more acts from the front of the vehicle with a simple structure, and furthermore, a stable detachment load can be achieved. It is an object to obtain the resulting vehicle pedal support structure.

[0010]

According to the first aspect of the present invention, there is provided a vehicle pedal support structure according to the present invention, wherein a first vehicle body is displaced substantially rearward when an external force of a predetermined value or more acts on a front portion of the vehicle. The front end side is coupled to the side component member, and the second body side component member which is disposed substantially on the vehicle rear side with respect to the first vehicle body side component and hardly displaces substantially toward the vehicle rear side even when the external force acts. A pedal bracket having a rear end coupled thereto, a suspension-type vehicle pedal in which a rotation shaft serving as a swing center is supported by the pedal bracket, and a rear end of the pedal bracket when the external force is applied. A detaching means for detaching from the vehicle body side component member, and further inputting a surface direction of a coupling surface between the rear end side of the pedal bracket and the second vehicle body side component to the pedal bracket when the external force is applied. Direction of the applied load At the same time, the rear end side of the pedal bracket and the second vehicle body-side component are non-slidably connected to each other, and the rigidity around the coupling surface is set higher than the rigidity of the coupling surface. It is characterized by that.

According to a second aspect of the present invention, there is provided a vehicle pedal support structure according to the present invention, wherein a front end side of a first vehicle body side component member which is displaced substantially rearward when an external force of a predetermined value or more acts on the front portion of the vehicle. The rear end side is coupled to a second vehicle body-side component member that is disposed substantially on the vehicle rear side of the first vehicle body-side component member and hardly displaces substantially to the vehicle rear side even when the external force is applied. A pedal bracket, a suspended vehicle pedal on which a rotating shaft portion serving as a swing center is supported by the pedal bracket, and a second vehicle body-side constituent member which is configured to hold a rear end side of the pedal bracket when the external force acts on the pedal bracket. Release means for releasing the pedal bracket from the rear end of the pedal bracket and the second vehicle body component. To be approximately orthogonal to Together, the rear end side and a second vehicle body component member of the pedal bracket attached to the slide impossible between them, and characterized in that.

According to a third aspect of the present invention, there is provided a vehicle pedal support structure according to the second aspect, wherein the rigidity around the coupling surface is set higher than the rigidity of the coupling surface. And

According to a fourth aspect of the present invention, there is provided a vehicle pedal support structure according to any one of the first to third aspects, wherein the coupling surface, the rear end side of the pedal bracket, and the second side. An air gap is provided between the vehicle body-side components and
It is characterized by:

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. Note that the second vehicle body side component hardly displaces substantially toward the vehicle rear side even when the external force acts. When the first vehicle-body-side component is displaced substantially rearward of the vehicle, the pedal bracket whose front end is coupled to the first vehicle-body-side component also displaces in the same direction. For this reason, the rear end side of the pedal bracket is separated from the second vehicle body-side constituent member by the separating means.

Here, in the present invention, the surface direction of the connecting surface between the rear end side of the pedal bracket and the second vehicle body-side component substantially coincides with the acting direction of the load input to the pedal bracket when the external force acts. Therefore, most of the load input to the joint surface between the rear end side of the pedal bracket and the second vehicle body-side component member is a shear load. In addition, in the present invention, since the rigidity around the coupling surface is set higher than the rigidity of the coupling surface, the rigidity changes abruptly between the coupling surface and the periphery thereof, and the stress due to the shear load tends to concentrate. That is, according to the present invention, it is possible to intentionally cause stress concentration to easily occur, and to apply a shear load intensively to a portion where the stress concentration is likely to occur.

In addition, in the present invention, the rear end side of the pedal bracket and the second vehicle body-side member are non-slidably connected to each other. Therefore, the two members are fastened using fasteners such as bolts and nuts. In addition, compared to a configuration in which a slit for releasing the fastener is formed by sliding the pedal bracket, there is no variation in the release load because it is not affected by rust or variation in the fastening torque.

Generally speaking, according to the present invention, the direction in which the rear end side of the pedal bracket and the second vehicle body-side component are connected is defined by the direction of the load applied to the pedal bracket when the external force is applied. The rear end side of the pedal bracket and the second vehicle body-side component member are non-slidably coupled to each other in a state where they are substantially matched with each other, and the rigidity around the coupling surface is higher than the rigidity of the coupling surface. With such a simple configuration, when an external force equal to or more than a predetermined value acts from the front of the vehicle, the rear end side of the pedal bracket can be separated from the vehicle body side, and a stable separation load can be obtained.

According to the second aspect of the present invention, the basic prerequisite components are the same.
Through a process similar to the described invention, the rear end side of the pedal bracket is separated from the second vehicle body-side constituent member.

Here, in the present invention, the surface direction of the joint surface between the rear end side of the pedal bracket and the second vehicle body-side constituent member is set with respect to the acting direction of the load input to the pedal bracket when the external force acts. Since they are substantially perpendicular to each other, a separation load in the peeling direction acts on the joint surface between the rear end side of the pedal bracket and the second vehicle body-side constituent member. For this reason, stress tends to concentrate on the joint surface between the rear end side of the pedal bracket and the second vehicle body side component member. Therefore, according to the present invention, similarly to the first aspect of the present invention, the rear end of the pedal bracket can be separated from the vehicle body with a simple configuration when an external force of a predetermined value or more acts from the front of the vehicle. .

Further, in the present invention, the rear end of the pedal bracket and the second vehicle body-side component are non-slidably connected to each other in the same manner as in the first aspect of the invention, so that the pedal bracket is stable. A detachment load is obtained.

According to the third aspect of the present invention, the rigidity around the joint surface between the rear end side of the pedal bracket and the second vehicle body component is set higher than the rigidity of the joint surface. The stress caused by the load in the peeling direction is more easily concentrated on the joint surface between the rear end side of the bracket and the second vehicle body side component member.

According to the present invention, the connecting surface between the rear end side of the pedal bracket and the second vehicle body side component, the rear end side of the pedal bracket and the second vehicle body side component member, Even if there is a slight deviation between the setting of the surface direction of the coupling surface and the direction of the load acting on the pedal bracket, the deviation is absorbed by the gap. Therefore, the load surely acts on the joint surface between the rear end side of the pedal bracket and the second vehicle body-side component.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] The first embodiment will be described below with reference to FIGS. Note that the first embodiment is
This corresponds to one embodiment of the present invention described in claims 1 and 4.

FIG. 1 schematically shows a peripheral structure of a suspension type brake pedal 10 as a vehicle pedal. Hereinafter, the overall configuration of the peripheral structure including the brake pedal 10 will be described with reference to FIG.

A dash panel 16 as a first vehicle body-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 the front side of a cowl inner panel 18 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 is provided. A hydraulic pressure conversion master cylinder 22 for converting to hydraulic pressure and a reservoir tank 24 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 is configured. 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.

The suspended 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. Note that a return spring 59 is locked to the pedal support portion 56 of the brake pedal 10, and the return spring 59 constantly urges the brake pedal 10 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, thereby forming the rotating shaft portion 60.

Further, a distal end of a push rod (operating rod) 66 projecting from the brake booster 20 and penetrating through 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 disposed in an inserted state, and both sides of the clevis 68 and the pedal support 5 are provided.
The push rod 66 and the pedal support 56 are rotatably connected to each other by a clevis pin 70 penetrating therethrough.

Next, a description will be given of a structure for connecting the above-mentioned pedal bracket 26 to the vehicle-body-side constituent member. At the four front corners of the base plate portion 28 of the pedal bracket 26,
Stud bolt 38 protruding from brake booster 20
A cylindrical collar 40 for allowing the through hole to pass therethrough is fixed. The base plate portion 28 is fixed to the dash panel 16 by screwing a nut 42 to a stud bolt 38 inserted therein, with the collars 40 abutting the dash panel 16. Thereby, the front end side of the pedal bracket 26 is connected to the dash panel 1.
6. In addition, a weld nut may be welded to the front surface of the dash panel 16 in advance, and the mounting bolt may be screwed in from the base plate portion 28 side and fixed. A dash insulator (not shown) used as a sound insulating material is interposed between the dash panel 16 and the base plate portion 28.

On the other hand, as shown in FIG. 2, on the rear end side of the pedal bracket 26, a top wall 44A and both side walls 44B
Is fixed by welding or the like in a partially superposed state. Immediately above the slide bracket 44, a front end portion of a slide plate 50 that is arranged so as to protrude from the instrument panel reinforcement 48 substantially toward the front of the vehicle is disposed. 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. 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 serves as a top wall 44 of the slide bracket 44 of the pedal bracket 26.
A is used as a sliding guide surface.

Here, the slide bracket 44 described above is used.
At the front end of the top wall 44A, there is formed a floating boss 52 projecting in a semicircular shape substantially upward of the vehicle. Thus, the rigidity of the peripheral portion 52A of the floating boss 52 is higher than the rigidity of the top surface 52B of the floating boss 52.
Similarly, a floating boss 54 is formed at the front end of the slide plate 50 so as to project in a semicircular shape substantially downward of the vehicle. Therefore, also in the floating boss portion 54, the rigidity of the peripheral portion 54A is higher than the rigidity of the bottom surface 54B. Each of the floating boss portions 52 and 54 is formed integrally when the slide bracket 44 and the slide plate 50 are pressed.

Then, these slide brackets 44
Surface 52B of the floating boss portion 52 and the slide plate 50
In a state where the bottom surface 54B of the floating boss portion 54 is in contact with (close contact with) the top surface 52B and the bottom surface 54B of the floating boss portion 54 are joined by spot welding at their central portions. "X" mark). This allows
The rear end side of the pedal bracket 26 is a slide plate 50
Is joined to.

In a state where the two floating bosses 52 and 54 are connected to each other, the top surface 52B and the bottom surface 54B which are the connecting surfaces of the two floating bosses 52 and 54 are slid due to their protruding shapes. A predetermined gap 55 between the top wall 44A of the bracket 44 and the front end of the slide plate 50
(See FIG. 1). Further, a top surface 52B and a bottom surface 54B, which are the connecting surfaces of the floating boss portions 52, 54, are provided.
The surface direction substantially coincides with the direction of action of the load input to the pedal bracket 26 in response to the rearward displacement of the dash panel 16 when an external force equal to or more than a predetermined value acts from the front of the vehicle (the direction of arrow F in FIG. 1). Is set to

Next, the operation and effect of this embodiment will be described. As shown by the solid line in FIG. 1, when the brake is not operated, the brake pedal 10 is held at the initial position by the urging force of the return spring 59. When the occupant applies a pedaling force to the pedal pad 58 of the brake pedal 10 from this state, the brake pedal 10 swings substantially around the rotation shaft 60 toward the front of the vehicle, and the push rod 66 is pressed substantially toward the front of the vehicle. Is done. This allows
The occupant's treading force 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 a two-dot chain line in FIG. 1, the dash panel 16 may be displaced substantially toward the rear of the vehicle (and substantially toward the upper side of the vehicle).

In this case, a load substantially toward the rear of the vehicle (a load in the direction of arrow F) is input to the pedal bracket 26 in accordance with the rearward displacement of the dash panel 16. , Slide bracket 44)
Since the slide plate 50 and the instrument panel reinforcement 48 to be attached thereto are both high-strength members, the slide plate 50 and the instrument panel reinforcement 48 are hardly displaced substantially toward the vehicle rear side. In addition, since the opening 34 is formed in the pair of side plate portions 30 of the pedal bracket 26,
The pedal bracket 26 has low rigidity substantially in the vehicle longitudinal direction. From these facts, the load in the arrow F direction received from the dash panel 16 and the reaction force received from the instrument panel reinforcement 48 act on the pedal bracket 26 to buckle the pedal bracket 26 substantially in the vehicle front-rear direction. The connection state of the slide bracket 44 of the pedal bracket 26 and the slide plate 50 by spot welding is released, and the slide bracket 44 is detached 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 toward the lower side of the vehicle. In addition, since the beads 36 are formed on the upper edges of the pair of side plates 30 of the pedal bracket 26, the rigidity of the upper edges of the side plates 30 in the vehicle longitudinal direction is partially increased. . Therefore,
As a result, as shown by a two-dot chain line in FIG. 1, the pedal bracket 26 is rotationally displaced substantially toward the front of the vehicle, and as a whole is deformed into a substantially “H” shape in side view. Therefore, the pedal pad 58 of the brake pedal 10 supported by the pedal bracket 26 is also displaced substantially toward the front of the vehicle.

In other words, according to the present embodiment, when an external force equal to or more than a predetermined value acts from the front of the vehicle, control is performed so that the pedal pad 58 of the brake pedal 10 is largely displaced substantially toward the front of the vehicle. Becomes possible. 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. .

The above is the basic and overall operation and effect of the present embodiment. In this embodiment, the following operation and effect can be obtained.

First, in this embodiment, since the floating bosses 52 and 54 having the same shape are formed on the slide bracket 44 and the slide plate 50, stress concentration is likely to occur. That is, the peripheral portions 52A of the floating boss portions 52, 54,
Since the rigidity of the bottom surface 54B is higher than the rigidity of the top surface 52B and the bottom surface 54B, the floating boss portions 52 and 54 function as sudden rigidity changing portions. For this reason, the top surface 52B having low rigidity,
Stress concentration tends to occur on the bottom surface 54B.

In this embodiment, the floating boss 52,
54, the slide bracket 44 and the slide plate 5 are spot-welded at the top surface 52B and the bottom surface 54B.
0, the two are fastened using fasteners such as bolts and nuts, and the slide bracket 44 is fastened.
The release load is stabilized as compared with a configuration in which a slit for releasing the fastener is formed by the slide. That is, if a configuration using a fastener is adopted, various variations occur at the time of assembly or due to aging. For example, factors that cause variations at the time of assembly include the fastening torque of the fastener, the surface treatment of the joint surface, the surface roughness, the surface flatness, the joint area, and the like. Factors that cause variation over time include rust. Therefore, from these facts, it is difficult to stabilize the detachment load by adopting the configuration using the fastener. On the other hand, in the case of spot welding, the release load is determined by the variations in the material strength of the pressed part, the plate thickness, and the nugget diameter, but since these are all controlled, a stable release load can be obtained. In addition, if the structure using the fastener is adopted, work restrictions are imposed from the viewpoint of the fastening direction of the fastener, but according to the present embodiment, such disadvantage does not occur.

Further, in this embodiment, the floating boss 5
Since the surface directions of the top surface 52B and the bottom surface 54B, which are the connecting surfaces of the base plates 2 and 54, substantially match the direction of action of the load input from the dash panel 16 to the pedal bracket 26 (the direction of the arrow F in FIG. 1), Top surface 52B and bottom surface 54B
Is subjected to a shear load. For this reason, the top surface 52B of the floating boss portion 52 of the slide bracket 44 is easily broken from the bottom surface 54B of the floating boss portion 54 of the slide plate 50.

Generally speaking, according to this embodiment, the rear end side of the pedal bracket 26 (slide bracket 44)
The rear end of the pedal bracket 26 and the slide plate 50 are fastened to each other in a state in which the surface direction of the connecting surface between the slide bracket 50 and the slide plate 50 substantially coincides with the direction of the load applied to the pedal bracket 26 when the external force is applied. It is a simple configuration in which spot welding is used in place of the structure using a tool and the rigidity around the joint surface is set higher than the rigidity of the joint surface. When acted on, the rear end of the pedal bracket 26 can be detached from the slide plate 50, and a stable detachment load can be obtained. As a result, the basic effects of the present embodiment (that is, when an external force equal to or greater than a predetermined value acts from the front of the vehicle,
Is controlled so as to be displaced substantially toward the front of the vehicle) (in other words, a guarantee function for the basic effect of the present embodiment is obtained).

Further, according to the present embodiment, the top surface 52B and the bottom surface 54B which are the connecting surfaces of the floating boss portions 52, 54 are formed.
A predetermined gap 55 is formed between the dash panel 16 and the front end of the slide plate 50 and the top wall 44A of the slide bracket 44 and the front end portion of the slide plate 50. Even if the load slightly shifts with respect to the plane direction of the slide plate, the load still
It is not absorbed (lost) on the front end side of 0,
The top surface 52B and the bottom surface 54B of the floating boss portions 52 and 54 are surely provided.
Can be acted upon.

Further, according to the present embodiment, the slide bracket 44 and the slide plate 5 are spot-welded.
Since the configuration is such that the connection is made with the zero, space saving can be achieved as compared with a case where a detachment configuration using a fastener is adopted.

In this embodiment, the floating boss 52 on the slide bracket 44 and the floating boss 54 on the slide plate 50 are connected by spot welding. However, the present invention is not limited to this. Are all applicable, for example, the mutual floating boss 5
The two and 54 may be connected to each other by a share pin. Second Embodiment Next, a second embodiment will be described with reference to FIGS. Note that the second embodiment corresponds to one embodiment of the invention described in claims 2 to 4. The same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof will be omitted.

In the embodiment shown in FIG. 3, instead of the slide bracket 44 in the first embodiment described above,
A slide bracket 82 having a hook-shaped bent portion 80 that is bent substantially toward the front of the vehicle at its upper end is used. Correspondingly, instead of the above-described slide plate 50, a slide plate 86 having a hook-shaped bent portion 84 bent at a substantially lower side of the vehicle at the front end is used.

The front end surface of the bent portion 80 of the slide bracket 82 and the rear end surface of the bent portion 84 of the slide plate 86 are oriented substantially in the vertical direction of the vehicle, and therefore correspond to the direction in which the input load acts on the pedal bracket 26 described above. The front end face of the slide bracket 82 and the rear end face of the slide plate 86 are arranged substantially orthogonal to the direction of arrow F (see FIG. 1). Then, in a state where the front end face and the rear end face are in contact with each other, they are connected to each other by spot welding.

Further, a peripheral portion 88 (enclosed by a dashed line) of the front end surface of the bent portion 80 serving as a coupling surface and the rear end surface of the bent portion 84.
Is bent, the rigidity of this portion is higher than the rigidity of the coupling surface. Therefore, also in the present embodiment, a function as a sudden change in rigidity similar to the above-described floating bosses 52 and 54 is secured.

The behavior of the pedal bracket 26 when the external force equal to or greater than a predetermined value acts from the front of the vehicle (separation, sliding, and rotational displacement of the pedal bracket 26) is the same as in the first embodiment described above. Is omitted.
The difference between the present embodiment and the above-described first embodiment is the manner in which the pedal bracket 26 is detached. That is, in the present embodiment, the surface direction of the connecting surface between the slide bracket 82 and the slide plate 86 is set to a direction substantially orthogonal to the direction in which the input load is applied to the pedal bracket 26. When acting from the front,
A peeling load, not a shear load, acts on the front end surface of the bent portion 80 of the slide bracket 82 and the rear end surface of the bent portion 84 of the slide plate 86. The peeling load causes the bent portion 80 of the slide bracket 82 to break (peel) from the bent portion 84 of the slide plate 86 and to be separated. Also in the present embodiment, as described above, the front end surface of the bent portion 80 and the peripheral portion 88 of the rear end surface of the bent portion 84 that are to be the connection surfaces are bent to have higher rigidity than the connection surface, so that the connection is made. Stress concentration on the surface is likely to occur.

From the above, this embodiment is the same as the above-described first embodiment in that it is a detaching structure using spot welding, but the surface direction of the coupling surface is substantially orthogonal to the input load acting direction. Due to the relationship, only the peeling load is applied instead of the shearing load, and the structure is essentially the same. Therefore, also in the present embodiment, the same effects as those in the first embodiment can be obtained.

Next, some other embodiments having the same structure as the embodiment shown in FIG. 3 will be described.

In the embodiment shown in FIG. 4, the front end wall 80A of the bent portion 80 of the slide bracket 82 and the rear end wall 84A of the bent portion 84 of the slide plate 86 are joined by rivets 90 instead of spot welding. I have. Also in this case, a peeling load is applied to the joint surface between the bent portion 80 of the slide bracket 82 and the bent portion 84 of the slide plate 86, so that the rivet 90 breaks and the slide bracket 82 comes off the slide plate 86. Become. In the present embodiment, spot welding is used, and a configuration is adopted in which joining is performed using rivets 90. However, since it is not a configuration in which fasteners are slid and released, a variation in fastening torque and a reduction in sliding resistance due to generation of rust are adopted. No variation occurs. Therefore, the detachment load does not become unstable.

In the embodiment shown in FIG. 5, a through hole 92 having a predetermined diameter is formed in the rear end wall 84A of the bent portion 84 of the slide plate 86, and the bent portion of the slide bracket 82 is inserted into the through hole 92. The periphery of the hole formed in the front end wall 80A of the 80 is caulked to connect the two. Also in this case, the bent portion 8 of the slide bracket 82
0 and the bent portion 84 of the slide plate 86 are subjected to a peeling load, and the caulking portion 94 of the slide bracket 82 is plastically deformed.
From the through-hole 92 of FIG.

In the embodiment shown in FIGS. 6 and 7, a through hole 96 formed of a circular hole 96A and a linear slit 96B is formed in a rear end wall 84A of a bent portion 84 of a slide plate 86. It is characterized in that the slide bracket 82 and the slide plate 86 are connected by the rivets 90. According to this configuration, since the through-hole 96 is easily deformed by the formation of the slit 96 </ b> B, the slide bracket 82 is easily separated from the slide plate 86.

In the embodiment shown in FIG. 8, a circular hole 98 is formed in the rear end wall 84A of the bent portion 84 of the slide plate 86.
It is characterized in that a slide bracket 82 and a slide plate 86 are connected by rivets 90 after forming a through-hole 98 formed of A and a cross-shaped slit 98B. According to this configuration, the rigidity around the through-hole 98 is further reduced compared to the embodiment illustrated in FIGS. 6 and 7, and the slide bracket 82 is more easily deformed, so that the slide bracket 82 is more easily detached from the slide plate 86.

Although the rivets 90 are used in the embodiments shown in FIGS. 6 to 8, the present invention is not limited to this, and bolts may be used. In this case, since the bolt is not slid, it is not affected by variations in the fastening torque.

Similar effects can be obtained by forming the above-described through holes 96 and 98 on the bent portion 84 side of the slide plate 86.

In the embodiment described above, the pedal bracket 26 and the slide brackets 44 and 82 fixed to the rear end side correspond to the “pedal bracket” of the present invention, and include the instrument panel reinforcement 48 and the slide plate fixed thereto. Reference numerals 50 and 86 correspond to the “second vehicle body side component member” in the present invention. FIG.
In the embodiment shown in FIG. 3 to FIG. 3, a connection configuration by spot welding that shears or peels off at a predetermined load, in the embodiment shown in FIG. 4, a connection configuration using a rivet 90 that breaks at a predetermined load, and in the embodiment shown in FIG. In the embodiment shown in FIGS. 6 to 8, the rivet 90 is plastically deformed by a predetermined load, and the rivet 90 is plastically deformed by a load.
The connection configuration using the through-holes 92, 96, and 98 that allows the pull-out (removal) of each of them corresponds to the "removal means" in the present invention.

In other words, the inclined surface 5 of the slide plate 50 also having a function as a “second vehicle body side component”
0A can be grasped as "a guide means for rotating and displacing the pedal bracket substantially toward the front side of the vehicle in a side view by displacing the rear end side of the pedal bracket after disengagement substantially toward the lower side of the vehicle". The configuration of the guide means is not limited to the above-described configuration, and may be such that the pedal for the vehicle is buckled after being disengaged by pressing the pedal for the vehicle with the pressing member fixed to the instrument panel reinforcement 48. That is, any structure may be used as long as the rear end side of the pedal bracket 26 is displaced in a desired direction (in this case, displaced substantially downward of the vehicle).

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

[0064]

As described above, in the vehicle pedal support structure according to the first aspect of the present invention, the surface direction of the connecting surface between the rear end side of the pedal bracket and the second vehicle body side component is adjusted by the external force. And the rear end side of the pedal bracket and the second vehicle body-side component are non-slidably connected between the pedal bracket and the second vehicle body-side component member. Since the rigidity around the surface is set higher than the rigidity of the coupling surface, the rear end side of the pedal bracket can be detached from the vehicle body side with a simple configuration when an external force of a predetermined value or more acts from the front of the vehicle. And has an excellent effect that a stable separation load can be obtained.

According to a third aspect of the present invention, there is provided a vehicle pedal support structure according to the present invention, wherein a surface direction of a connecting surface between a rear end side of a pedal bracket and a second vehicle body side component is input to the pedal bracket when the external force acts. To be substantially perpendicular to the acting direction of the applied load, and to the rear end side of the pedal bracket and the second
The rear end of the pedal bracket can be disengaged from the vehicle body side when an external force of a predetermined value or more is applied from the front of the vehicle with a simple configuration. And has an excellent effect that a stable separation load can be obtained.

In the vehicle pedal support structure according to the third aspect of the present invention, the rigidity around the coupling surface is set higher than the rigidity of the coupling surface in the second aspect of the invention.
The stress caused by the load in the peeling direction can be further concentrated on the joint surface between the rear end side of the pedal bracket and the second vehicle body-side component member, thereby ensuring the separation of the rear end side of the pedal bracket. It has an excellent effect that it can be produced.

According to a fourth aspect of the present invention, there is provided a vehicle pedal support structure according to any one of the first to third aspects, wherein the coupling surface, the rear end side of the pedal bracket, and the second vehicle body. Since there is a gap between the side components
Even if there is a slight deviation between the setting of the surface direction of the connecting surface and the direction of the load acting on the pedal bracket, the load can be securely connected to the rear end side of the pedal bracket and the second vehicle body side component member. It has an excellent effect that it can act on a surface.

[Brief description of the drawings]

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

FIG. 2 is an enlarged perspective view showing a state where a slide bracket and a slide plate shown in FIG. 1 are separated.

FIG. 3 is a side view showing a main part of a vehicle pedal support structure according to a second embodiment.

FIG. 4 is a sectional view showing an embodiment using rivets instead of spot welding in the configuration shown in FIG. 3;

FIG. 5 is a cross-sectional view showing an embodiment using caulking instead of a rivet in the configuration shown in FIG. 4;

FIG. 6 is a perspective view of an essential part showing an embodiment in which a through hole having a linear slit is used and then connected by rivets.

FIG. 7 is a front view showing the through hole shown in FIG. 6 as viewed from the front side of the vehicle.

FIG. 8 is a front view corresponding to FIG. 7, showing an improved example of the through hole shown in FIG. 7;

FIG. 9 is a perspective view showing a conventional structure.

[Explanation of symbols]

Reference Signs List 10 brake pedal (vehicle pedal) 16 dash panel (first vehicle body component) 26 pedal bracket 44 slide bracket (pedal bracket) 48 instrument panel reinforcement (second vehicle body component) 50 slide plate (second vehicle body) 52A Peripheral part (periphery of coupling surface) 52B Top surface (periphery of coupling surface) 54A Peripheral part (periphery of coupling surface) 54B Bottom surface (periphery of coupling surface) 55 Air gap 58 Pedal pad (tread surface) 60 Rotating shaft part 82 Slide bracket (Pedal bracket) 86 Slide plate (second body side component member) 90 Rivets (removing means) 92 Through hole (removing means) 94 Caulked portion (removing means) 96 Through hole (removing means) 98 Through hole (removing means)

Claims (4)

[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 having a rear end coupled to a second vehicle body side component member which is disposed substantially on the rear side of the vehicle and hardly displaces substantially rearwardly of the vehicle even when the external force acts thereon, and a rotation about which the pedal bracket pivots A suspension-type vehicle pedal on which a shaft portion is supported, and release means for releasing the rear end side of the pedal bracket from the second vehicle body-side constituent member when the external force is applied. The surface direction of the connecting surface between the rear end side of the bracket and the second vehicle body side component is made substantially coincident with the acting direction of the load input to the pedal bracket when the external force is applied, and the rear end side of the pedal bracket is The second body side And a formation member slide impossible coupled therebetween, moreover, the rigidity of the periphery of the bonded surface is set higher than the rigidity of the coupling surfaces, the vehicle pedal support structure, characterized in that. 2. A front end side is coupled to a first vehicle body side component member which is displaced substantially to the vehicle rear side 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 has A pedal bracket having a rear end coupled to a second vehicle body side component member which is disposed substantially on the rear side of the vehicle and hardly displaces substantially rearwardly of the vehicle even when the external force acts thereon, and a rotation about which the pedal bracket pivots A suspension-type vehicle pedal on which a shaft portion is supported, and release means for releasing the rear end side of the pedal bracket from the second vehicle body-side constituent member when the external force is applied. The surface direction of the joint surface between the rear end side of the bracket and the second vehicle body side component is substantially orthogonal to the direction of application of the load input to the pedal bracket when the external force is applied, and the rear end of the pedal bracket Side and second Bound slid impossible therebetween and a body side component, the vehicle pedal support structure, characterized in that. 3. The vehicle pedal support structure according to claim 2, wherein the rigidity around the coupling surface is set higher than the rigidity of the coupling surface. 4. The air conditioner according to claim 1, wherein a gap is provided between the coupling surface, a rear end side of the pedal bracket, and a second vehicle body-side component member. Vehicle pedal support structure.