JP3951237B2 - Pedal support structure for vehicles - Google Patents

Description

  The present invention relates to a pedal support structure such as a brake pedal of a vehicle, and more particularly to a technique related to a so-called crushable pedal.

  At the time of a frontal collision of an automobile, the front part of the vehicle body may be crushed while absorbing the collision energy, and the engine arranged in the engine room may move to the rear of the vehicle. In this case, the dash panel that partitions the engine room and the passenger compartment is pressed and deformed rearward of the vehicle, and a pedal such as a brake pedal disposed on the rear side of the dash panel also moves rearward of the vehicle. As a result, the foot space of the driver is reduced, and the steering column or the like easily interferes with the feet of the driver who is stepping on a pad portion such as a brake pedal. Therefore, for example, as described in Patent Document 1, when a dash panel is deformed to the vehicle compartment side, a pedal support structure for an automobile in which a pedal portion such as a brake pedal is moved relative to the vehicle body relative to the vehicle front side. It has been known.

  In Patent Document 1, when a pedal bracket that rotatably supports a pedal moves to the vehicle rear side, a mechanism for changing the posture of the pedal bracket while bending the pedal bracket so that the pad portion of the pedal moves to the vehicle front side. Is disclosed. This mechanism provides a vehicle body side sliding member in an instrument panel reinforcement extending in the vehicle width direction in the instrument panel and a bracket side sliding portion in the pedal bracket, and when the pedal bracket moves to the vehicle rear side, The posture of the pedal bracket is changed by sliding the bracket side sliding portion along the guide surface of the vehicle body side sliding member. While the bracket side sliding portion slides, the pedal bracket changes its posture while being bent, and the reaction force when the pedal bracket is bent is received by the instrument panel reinforcement.

  Also, the pedal bracket is fixed at two locations, the dash panel and the vehicle body side sliding member, and the fixation between the vehicle body side sliding member and the pedal bracket is released when the pedal bracket moves to the vehicle rear side. The pedal bracket is configured to be allowed to move toward the vehicle rear side.

  That is, when the pedal bracket moves to the vehicle rear side due to the collision of the automobile, the bracket side sliding portion of the pedal bracket (hereinafter simply referred to as the pedal bracket) starts to slide on the guide surface of the vehicle body side sliding member, When the sliding is performed by a predetermined distance, the fixing of the pedal bracket and the vehicle body side sliding member is released. As the pedal bracket continues sliding on the guide surface, the posture of the pedal bracket changes so that the pad portion of the pedal moves relative to the front of the vehicle.

Japanese Patent Laid-Open No. 9-254821

  Here, the inclination of the guide surface is set so that the impact load is reduced when the impact load is input, and after the input, the pedal bracket is surely deformed by an aimed amount so that the pedal pad portion is It is necessary to set so that movement to the vehicle rear side is reliably suppressed. If an impact load acts strongly on the instrument panel reinforcement when the impact load is input, the instrument panel reinforcement may break and the instrument panel reinforcement may not be able to receive the reaction force when the pedal bracket is folded. is there.

  For this reason, also in the support structure of Patent Document 1, the guide surface of the vehicle body side sliding member is relatively inclined in the first half portion for reducing the collision load against the instrument panel reinforcement and for smoothly releasing the fixing of the pedal bracket. Is horizontal, and in the latter half, the inclination is set to be relatively vertical so as to obtain a large change in the posture of the pedal bracket.

  However, since the pedal support structure of Patent Document 1 realizes such a function using a single guide surface, the guide surface tends to be long in the front-rear or up-down direction, and the degree of freedom in layout is small.

  Accordingly, an object of the present invention is to improve the degree of freedom of the layout of the guide surface that guides the change in the posture of the pedal bracket.

According to the present invention, comprising: a pedal unit having a pedal and a bracket that rotatably supports the pedal; and a guide member having a guide surface on which a contact portion provided in the pedal unit slides, When the bracket moves to the vehicle rear side, the contact portion changes the posture of the pedal unit by sliding on the guide surface, and the pedal pad portion is prevented from moving to the vehicle rear side. in the configuration guide surface has been pedal support structure for a vehicle as, and a pre-Symbol second contact portion provided on the first of the bracket and the abutment portion provided on the pedal as an abutment, wherein The guide member is supported by the instrument panel reinforcement of the vehicle, and the first guide surface on which the first contact portion slides as the guide surface and the second contact portion on which the second contact portion slides. With the guide surface The first and second abutting portions and the first and second guide surfaces, when the bracket moves to the vehicle rear side, the first abutment with respect to the first guide surface. The second contact portion comes into contact with the second guide surface after the sliding of the portion starts, and the second contact portion comes into contact with the second guide surface, thereby the first contact. The portion is set so as to cause a relative displacement with respect to the first guide surface in a direction normal to the first guide surface and away from the first guide surface. A pedal support structure for a vehicle is provided.

  In this pedal support structure, by providing the first and second abutting portions and the first and second guide surfaces, two sliding portions are formed, and the first guide surface is provided with respect to the first guide surface. The second contact portion comes into contact with the second guide surface after the first contact portion starts to slide. Thus, for example, with respect to the first guide surface, the second guide surface is reduced so as to reduce an impact load from the pedal unit to the instrument panel reinforcement and to cause initial deformation of the bracket. It is possible to assign the function of each sliding part, such as reliably deforming the bracket by an aimed amount and ensuring that the pedal pad part moves to the rear side of the vehicle. Since the first and second guide surfaces can be set separately, the degree of freedom in layout can be improved.

Here, since the direction of the impact load is not necessarily constant, when two sliding portions are configured in this way, depending on the direction of the impact load, one contact portion slides on one guide surface. After that, when the other abutment portion slides on the other guide surface, each abutment portion slides on each guide surface at the same time to cause biting, and the planned operation may not be performed. Concerned. Unless each abutment portion slides smoothly on each guide surface, the intended posture change of the pedal bracket or the like cannot be obtained. With regard to this point, in the pedal support structure of the present invention, the first contact portion is in the normal direction of the first guide surface by the second contact portion being in contact with the second guide surface. Since the first guide surface is displaced in a direction away from the first guide surface, the first and second contact portions and the first and second guide surfaces are separated from each other. You can avoid the situation of meshing. Therefore, when the sliding part is composed of two parts, the transition from the sliding at one sliding part to the sliding at the other sliding part can be made smoother, and the above-described problem does not occur. .

In the present invention, the first guide surface and the second guide surface are inclined downward toward the rear of the vehicle, and an interval between the first guide surface and the second guide surface is set. It can also be configured such that it is gradually narrowed downward and the distance between the first contact part and the second contact part is constant. According to this configuration, the distance between the first guide surface and the second guide surface is formed so as to gradually narrow downward, while the first contact portion and the second guide surface are formed. Since the distance between the first abutting portion and the first abutting portion is constant, as the second abutting portion slides on the first guide surface, the distance between the first and second abutting portions is increased. And a difference arises in the space | interval of a 2nd guide surface. Therefore, with a relatively simple configuration, the first contact portion comes into contact with the second guide surface, so that the first contact portion moves away from the first guide surface. A relative displacement can be generated with respect to one guide surface.

In the present invention, the first guide surface and the second guide surface are inclined downward in parallel toward each other toward the rear of the vehicle, and the second abutting portion includes the second contact surface. As the contact portion slides on the second guide surface, the contact portion may be formed in a planar shape so that the distance from the first contact portion gradually increases. According to this configuration, when the first guide surface and the second guide surface are parallel to each other, the distance between the two becomes constant. As the abutting portion slides on the second guide surface, the distance between the first abutting portion and the first abutting portion is gradually increased, so that the second abutting portion is As the first guide surface slides, a difference occurs between the distance between the first and second contact portions and the distance between the first and second guide surfaces. Therefore, with a relatively simple configuration, the first contact portion comes into contact with the second guide surface, so that the first contact portion moves away from the first guide surface. A relative displacement can be generated with respect to one guide surface.

In the present invention, the guide member allows the bracket to move toward the vehicle rear side when a constant load is applied to the bracket toward the vehicle rear side. A fixing portion for fixing the bracket so that the first and second abutting portions and the first and second guide surfaces are separated from each other; and the bracket is fixed to the fixing portion and a dash panel of the vehicle May be.

  As described above, according to the present invention, the first and second abutting portions and the guide surface are provided, and the sliding portion is configured in two places, so that the guide surface for guiding the change in the posture of the pedal bracket is guided. The degree of freedom in layout can be improved. Moreover, it is possible to make the transition from sliding at one sliding location to sliding at the other sliding location more smooth.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

<First Embodiment>
FIG. 1 is a schematic view of a pedal support structure A according to an embodiment of the present invention, and FIG. 2 is a schematic view of a front part of a left-hand drive vehicle to which the pedal support structure A is applied. The dash panel 1 is disposed so as to define an engine room 3 in which the engine 2 is accommodated and a vehicle compartment 4. An instrument panel (not shown) is provided on the rear side of the dash panel 1 and an instrument panel reinforcement 5 is provided in the interior of the dash panel 1 in the vehicle width direction to support each component in the instrument panel. It is configured as follows. The instrument panel reinforcement 5 is supported by a pair of front pillars 6 provided on the left and right sides of the vehicle body. A hanger bracket 7 that supports the steering column 8 is attached to the instrument panel reinforcement 5. A steering shaft 9 is inserted through the steering column 8, and a steering wheel 10 is attached to the end of the steering shaft 9. An accelerator pedal 11 and a brake pedal 100 are disposed below the hanger bracket 7. The pedal support structure A of this embodiment is applied to the brake pedal 100.

  Hereinafter, the configuration of the pedal support structure A will be described in detail with reference to FIGS. 1 and 3. FIG. 3 is an exploded view (partially broken) of components of the pedal support structure A. FIG. The pedal support structure A includes a brake pedal 100 and a pedal bracket 200 that rotatably supports the brake pedal 100, and these constitute a brake pedal unit. The brake pedal 100 includes an arm portion 101 and a pad portion 102 attached to the lower end portion of the arm portion 101. The pedal 100 is rotatably supported by the pedal bracket 200 via a shaft 103 at the upper end portion of the arm portion 101, and swings in the vehicle front-rear direction in response to the driver stepping on the pad portion 102. In the case of this embodiment, the shaft 103 is fixed to the arm portion 101, and the shaft 103 is inserted into a hole 201 a provided in the pedal bracket 200 and is supported.

  One end of the return spring 12 is attached to the middle of the arm portion 101. The return spring 12 is provided so as to apply a counterclockwise turning force in FIG. 1 to the brake pedal 100. After the driver steps on the pad portion 102, the pad portion 102 returns to the vehicle rear side. This is a configuration for doing so. In the middle of the arm portion 101, one end portion of the operating rod 13 is rotatably attached. The operating rod 13 passes through a hole 1 a provided in the dashboard 1, and the other end is connected to a master cylinder (not shown) disposed in the engine room 3 via a master back 14. Yes. When the pedal portion 102 is depressed and the brake pedal 100 is rotated in the clockwise direction in FIG. 1, the master back 14 is actuated by the operating rod 13, and the master back 14 increases the pressing force on the master cylinder. And the wheel is braked by the hydraulic pressure from the master cylinder.

  The pedal bracket 200 includes a pair of side plate portions 201 formed at intervals in the vehicle width direction, an upper plate portion 202 formed on an upper portion of the side plate portion 201 on the vehicle rear side, and a vehicle rear side of the side plate portion 201. The rear end portion 203 formed and the front end portion 204 formed on the vehicle front side of the side plate portion 201 are provided. The pedal bracket 200 is fixed to the dash panel 1 at the front end portion 204. For example, the pedal bracket 200 is fixed to the dash panel 1 by fastening the dash panel 1 to the master back 14 with a bolt or the like so as to be sandwiched between the front end portion 204 and the master back 14. Next, the side plate portion 201 is provided with a hole 201 a into which the shaft 103 of the brake pedal 100 is inserted, and the upper portion of the arm portion 101 of the brake pedal 100 is disposed between the side plate portions 201. The shaft 103 is set so as to protrude from the side plate portion 201 by a certain amount to the side, and this constitutes a contact portion described later. Next, the rear end portion 203 has an arcuate curved surface and is smoothly continuous with the upper plate portion 202. The rear end portion 203 also constitutes a contact portion described later. The upper plate portion 202 is provided with two rows of slots 202a that open forward in the vehicle direction. As will be described later, the pedal bracket 200 is fixed to the first guide member 300 through the slot 202a. That is, in this embodiment, the pedal bracket 200 is fixed at two locations by the dashboard and the first guide member 300.

  The first guide member 300 is disposed on the vehicle rear side with respect to the pedal bracket 200, and has a pair of side plate portions 301, an upper plate portion 302, and a side plate portion 201 formed at intervals in the vehicle width direction. And a rear end portion 303 formed on the vehicle rear side. The rear end 303 constitutes an attachment surface for attaching the first guide member 300 to the second guide member 400. The side plate portion 301 has an edge on the vehicle front side that is bent outward, and the lower surface of the bent portion constitutes the first guide surface 301a. The first guide surface 301a functions as a guide surface on which the shaft 103 serving as the first contact portion comes into contact and slides when the pedal bracket 200 moves to the vehicle rear side due to a frontal collision or the like. In this embodiment, while being arrange | positioned with respect to the axis | shaft 103 at the vehicle rear side, it forms so that it may incline linearly downward toward the vehicle rear.

  Next, the upper plate portion 302 of the first guide member 300 is provided with a fixing portion 302a for fixing the pedal bracket 200. Hereinafter, the structure for fixing the pedal bracket 200 by the first guide member 300 will be described with reference to FIG. FIG. 4A is a cutaway view showing a fixing structure of the pedal bracket 200 by the first guide member 300 in a normal state (that is, in a state where no frontal collision or the like has occurred). The fixing portion 302a is provided with a screw hole penetrating in the vertical direction, and the upper plate portion 302 below the screw hole is also provided with a hole. Thus, the upper plate portion 202 of the pedal bracket 200 is overlaid under the upper plate portion 302 of the first guide member 300 so that the slot 202a of the pedal bracket 200 is positioned below the fixed portion 302a. Two bolts 15 are inserted from below the upper plate portion 202 so as to pass through the spacers 16, the slots 202 a, and the holes of the upper plate portion 302. Then, the pedal bracket 200 is fixed to the first guide member 300 by screwing the bolt 15 into the screw hole of the fixing portion 302a and fastening it. Further, as shown in the figure, in this embodiment, the shaft 103 serving as the first contact portion does not contact the guide surface 301a, and the pedal bracket 200 is fixed in a state of being separated from the guide surface 301a. Note that the vehicle rear side portion of the pedal bracket 200 is disposed between the side plate portions 301 of the first guide member 300.

  Next, with reference to FIG. 4B, an operation when the fixing of the pedal bracket 200 by the first guide member 300 is released will be described. FIG. 4B is a diagram showing an operation when the fixing of the pedal bracket 200 by the first guide member 300 is released from the state of FIG. As shown by the arrow in the figure, when a load acts on the pedal bracket 200 toward the vehicle rear side, the pedal bracket 200 is biased by this and the pedal bracket 200 is relative to the first guide member 300 on the vehicle rear side. Try to move to. At this time, the movement of the pedal bracket 200 is restricted by fastening between the bolt 15 and the fixing portion 302a, but the load on the pedal bracket 200 exceeds a certain range because the vehicle front side of the slot 202a is open. The pedal bracket 200 moves relative to the first guide member 300 toward the vehicle rear side so that the upper plate portion 202 of the pedal bracket 200 slides on the lower surface of the upper plate portion 302 of the first guide member 300. .

  Thereafter, the bolt 15 passes through the slot 202a, and the fixing of the pedal bracket 200 by the first guide member 300 is completely released. Although the shaft 103 and the first guide surface 301a may be in contact with each other from the beginning, in this embodiment, the shaft 103 and the first guide surface 301a are in contact with each other from a separated state. The first guide surface 301a does not restrain the movement of the pedal bracket 200 when releasing the fixation. Therefore, the fixing of the pedal bracket 200 can be reliably released. The distance separating the shaft 103 and the first guide surface 301a can be determined, for example, such that the bolt 15 passes through the slot 202a when the shaft 103 reaches the first guide surface 301a. With such a configuration, in the present embodiment, in a normal state, the pedal bracket 200 is temporarily fixed by the first guide member 300, so to speak, while it is temporarily fixed, while facing the pedal bracket 200 toward the vehicle rear side. When a certain load is applied, the fixing is released and the pedal bracket 200 is allowed to move to the vehicle rear side.

  Next, returning to FIGS. 1 and 3, the second guide member 400 will be described. The second guide member 400 is disposed further to the rear side of the vehicle than the first guide member 300 with respect to the pedal bracket 200, and a right side plate portion 401 that serves as a mounting surface for the hanger bracket 7 and a left side plate portion 402. And an attachment surface 403 formed on the vehicle front side to which the first guide member 300 is attached, and a second guide surface 404 formed on the vehicle front side. The second guide member 400 is supported by the instrument panel reinforcement 5 via the hanger bracket 7 by fixing the side plate portion 401 to the hanger bracket 7 with a fastener such as a bolt. In addition, the first guide member 300 has its rear end portion 303 fixed to the mounting surface 403 of the second guide member 400 with a fastener such as a bolt so that the instrument panel reinforcement is provided via the hanger bracket 7 and the second guide member 400. 5 is supported.

  The second guide surface 404 functions as a guide surface on which the rear end portion 203 of the pedal bracket 200 serving as the second contact portion contacts and slides when the pedal bracket 200 moves to the vehicle rear side due to a frontal collision or the like. To do. In the present embodiment, the second guide surface 404 is disposed on the vehicle rear side with respect to the rear end portion 203 and is formed so as to be linearly inclined downward toward the vehicle rear. The second guide surface 404 is arranged on the vehicle rear side of the first guide surface 301a so as to be aligned therewith. The shaft 103, the rear end portion 203, the first guide surface 301 a, and the second guide surface 404 are arranged so that the shaft 103 is the first when the pedal bracket 200 moves relative to the vehicle body toward the vehicle rear side. The mutual arrangement relationship is set so that sliding starts after coming into contact with the guide surface 301a, and the rear end 203 slides in contact with the second guide surface 404 during the sliding after the start of sliding. ing. In other words, in this embodiment, the two guide surfaces 301a and 404 are used to guide the change in the posture of the pedal unit in two stages. In the present embodiment, the rear end portion 203 abuts on the second guide surface 404 so that the shaft 103 is displaced relative to the first guide surface 301a in a direction away from the first guide surface 301a. The details will be described later.

  The inclination angles of the two guide surfaces 301a and 404 may be substantially the same. However, the inclination angle of the first guide surface 301a causes the pedal bracket 200 to undergo initial deformation while the shaft 103 is in contact with the guide surface 301a. Is set to be relatively horizontal so that it does not act excessively on the instrument panel reinforcement 5, and the inclination angle of the second guide surface 404 is reliably deformed by an amount aimed at the pedal bracket 200, so that the pad portion 103 is It can also be set relatively vertical to ensure that it does not move backward, and can be set according to the intended function. In the case of this embodiment, the inclination angle of the guide surface 404 is set to be more vertical than the guide surface 301a. As described above, in the present embodiment, two sets of the contact portion (the shaft 103, the rear end portion 203) and the guide surface (the first guide surface 301a and the second guide surface 404) are provided, and two sliding portions are provided. Thus, the degree of freedom in layout can be increased as compared with the case of one set. In particular, it is possible to obtain a longer sliding distance by shortening the length of the guide surface in the vertical direction than when the contact portion and the guide surface are set as one set. Furthermore, the position of the two guide surfaces can be set independently by providing two contact portions and two guide surfaces instead of one contact portion sliding on the two guide surfaces. This can save space.

  Next, the pedal support structure A having such a configuration will be described with reference to FIG. FIG. 5A shows a normal mode, in which the shaft 103 and the first guide surface 301a and the rear end portion 203 and the second guide surface 404 are separated from each other, and the pedal bracket 200 is in the first state. 1 It is in the state fixed to the fixing | fixed part 302a of the guide member 300. FIG. Here, when the automobile to which the pedal support structure A is applied causes a frontal collision with an obstacle and the impact load is applied to the pedal bracket 200 toward the rear side of the vehicle as shown in FIG. As described with reference to FIG. 5, the fixing of the pedal bracket 200 by the fixing portion 302a is released, the pedal bracket 200 and the pedal 100 move slightly toward the vehicle rear side, and the shaft 103 abuts on the first guide surface 301a. Start sliding. The rear end portion 203 and the second guide surface 404 are still separated from each other. And as shown in FIG.5 (c), the axis | shaft 103 is guided to the 1st guide surface 301a, slides this, and the attitude | position of the pedal bracket 200 and the pedal 100 is changed. More specifically, the pedal bracket 200 and the pedal 100 move downward toward the vehicle rear side, and the pedal bracket 200 starts to bend and the vehicle rear side portion of the pedal bracket 200 rotates clockwise in FIG. Begin to. For this reason, the pad portion 102 of the pedal 100 moves to the normal position shown in FIG. 5 (a) or the vehicle front side even though the pedal bracket 200 moves to the vehicle rear side. Backward movement is suppressed.

  When the pedal bracket 200 further moves to the vehicle rear side, the postures of the pedal bracket 200 and the pedal 100 further change to move the pad portion 102 to the vehicle front side, and at the rear end portion 203 as shown in FIG. Comes into contact with the second guide surface 404. When the rear end portion 203 comes into contact with the second guide surface 404 and starts to slide, the shaft 103 is separated from the first guide surface 302a as shown in FIG. Is prevented from biting into the second guide surface 404 and the first guide surface 301a. A configuration in which the shaft 103 is relatively displaced in the direction away from the first guide surface 302a when the rear end portion 203 abuts on the second guide surface 404 in this manner will be described with reference to FIG. FIG. 6A is a diagram showing a design example of the surface of the rear end portion 203.

  As described above, in the present embodiment, the inclination angle of the second guide surface 404 is set to be more vertical than the first guide surface 301a. Accordingly, as shown in FIG. 6A, the distance (shortest distance) between the first guide surface 301a and the second guide surface 404 becomes narrower as it goes downward. Therefore, as shown in the figure, the distance between the shaft 103 and the surface of the rear end portion 203 is set within a certain range by forming the surface of the rear end portion 203 into an arcuate surface having a constant distance R from the shaft 103. And constant. By setting the dimensions in this way, the more the rear end 203 slides below the second guide surface 404, the more the shaft 103 and the rear than the distance between the first guide surface 301a and the second guide surface 404. The distance from the surface of the end 203 becomes longer, and the shaft 103 can be displaced relative to the first guide surface 301a toward the front side of the vehicle and separated.

  It should be noted that the inclination angle of the second guide surface 404 is not set to be more vertical than that of the first guide surface 301a as in the present embodiment, and the first guide surface 301a and the first guide surface 301a as shown in FIG. When the two guide surfaces 404 are set in parallel, the distance between them is substantially constant at any location. In this case, as shown in FIG. 6B, the same effect can be obtained by forming the surface of the rear end portion 203 in an arcuate plane shape in which the distance gradually changes from the shaft 103. In FIG. 6B, the distance between the surface of the rear end portion 203 and the shaft 103 is formed in an arcuate surface shape that gradually changes in R1 to R5 (R1 <R2 <R3 <R4 <R5). Therefore, when the rear end portion 203 slides while rotating clockwise with respect to the second guide surface 404 in the same figure, the distance between the shaft 103 and the contact point of the second guide surface 404 of the rear end portion 203. Becomes gradually longer, and the shaft 103 can be separated from the first guide surface 301a toward the front side of the vehicle. In order to obtain such an effect, the inclination angle of the second guide surface 404 is set to be more vertical than the first guide surface 301a as shown in FIG. ), The shape of the surface of the rear end portion 203 may be set.

  Returning to FIG. 5, when the pedal bracket 200 further moves toward the vehicle rear side, the rear end portion 203 slides on the second guide surface 404 in a state where the shaft 103 is separated from the first guide surface 301 a, and the pedal bracket 200 and The posture of the pedal 100 is further changed. In the course of these series of processes, the pedal bracket 200 bends further and eventually reaches the elastic limit and bends. Although not shown in the figure, the operation rod 13 is also bent. Then, the pad portion 102 is guided further forward of the vehicle. In the present embodiment, the rear end portion 203 has an arcuate curved surface and is smoothly continuous with the upper plate portion 202. Therefore, as shown in FIG. 5 (f), the rear end portion 203 is the second guide surface 404. Even after reaching the sliding end point of the lower end portion, the upper plate portion 202 abuts against the lower end portion of the second guide surface 404 and slides, and guidance for changes in the posture of the pedal bracket 200 and the pedal 100 continues for a longer time. Is done. Thus, in this embodiment, even when a frontal collision or the like occurs, the driver's foot space can be secured. In particular, when the sliding of the shaft 103 with respect to the first guide surface 301a shifts to the sliding of the rear end portion 203 with respect to the second guide surface 404, the shaft 103 is separated from the first guide surface 302a, so A situation in which the shaft 103 bites into the second guide surface 404 and the first guide surface 301a is avoided, and smooth transition and sliding can be realized.

Second Embodiment
Next, a second embodiment of the present invention will be described. In the first embodiment, the rear end 203 is in contact with the second guide surface 404 while the shaft 103 slides on the first guide surface 301a. However, the shaft 103 is the end of the first guide surface 301a. It is also possible to set the rear end portion 203 so as to contact the second guide surface 404 after reaching the portion and being separated. In this case, when the rear end portion 203 comes into contact with the second guide surface 404, it is desirable that the impact and the change in the moving speed of the pedal bracket 200 are mitigated as much as possible. Therefore, the present embodiment employs the configuration shown in FIG. FIG. 7 is a schematic view of a main part of a pedal support structure B according to the second embodiment of the present invention. Here, the configuration different from the pedal support structure A will be mainly described. Further, the configuration of the pedal support structure B corresponding to the pedal support structure A is denoted by “′”.

  In the pedal support structure B of the present embodiment, an inclined portion 301a ″ is provided at the lower end portion of the first guide surface 301a ′ of the first guide member 300 ′. The inclined portion 301a ″ is formed on the first guide surface 301a ′. The inclination is set to be different from that of the other part.In the case of this embodiment, the surface is formed so that the inclination is more vertical than that of the other part and slightly curved downward. ing. A portion other than the inclined portion 301 a ″ of the first guide surface 301 a ′ is linearly inclined. This inclined portion 301 a ″ is a sliding end portion of the shaft 103. In the present embodiment, the second guide surface 404 ′ of the second guide member 400 ′ is set linearly in parallel with the first guide surface 301a ′ (excluding the inclined portion 301a ″). The 'rear end portion 203' is dimensioned so that the shaft 103 contacts the second guide surface 404 'after sliding on the inclined portion 301a "of the first guide surface 301a' and moving downward. Yes.

  Next, the pedal support structure B will be described with reference to FIG. The operation of the pedal support structure B is substantially the same as the operation of the pedal support structure A, but from the sliding of the shaft 103 with respect to the first guide surface 301a ′ to the sliding of the rear end portion 203 ′ with respect to the second guide surface 404 ′. The mode of migration is different. In the normal mode shown in FIG. 7, the shaft 103 and the first guide surface 301a ′ and the rear end portion 203 ′ and the second guide surface 404 ′ are separated from each other, and the pedal bracket 200 ′ is the first. The guide member 300 ′ is fixed to the fixing portion 302a ′.

  Here, when an automobile to which the pedal support structure B is applied causes a frontal collision with an obstacle and an impact load is applied to the pedal bracket 200 toward the rear side of the vehicle, the fixed portion is the same as in the pedal support structure A. The fixing of the pedal bracket 200 ′ by 302a ′ is released, the pedal bracket 200 ′ and the pedal 100 ′ are slightly moved to the rear side of the vehicle, the shaft 103 comes into contact with the first guide surface 301a ′, and starts to slide ( FIG. 8 (a)). The rear end portion 203 and the second guide surface 404 are still separated from each other.

  Then, as shown in FIG. 8B, the shaft 103 is guided by the first guide surface 301 a ′ and slides to change the postures of the pedal bracket 200 ′ and the pedal 100. Therefore, the pad portion 102 of the pedal 100 moves to the normal position shown in FIG. 7 or the vehicle front side, even though the pedal bracket 200 ′ is moved to the vehicle rear side, and the vehicle rear side. The movement to is suppressed.

  When the pedal bracket 200 ′ further moves to the vehicle rear side, the postures of the pedal bracket 200 ′ and the pedal 100 further change to move the pad portion 102 to the vehicle front side, and the shaft 103 as shown in FIG. Reaches the sliding end portion at the lower end of the first guide surface 301a ′. As described above, the sliding end portion is formed with the inclined portion 301a ″ that is steeper than the other portions of the first guide surface 301a ′, so that the pedal bracket 200 ′ and the pedal 100 are located on the vehicle rear side. 8 (d), the shaft 103 is detached from the first guide surface 301a and separated from the first guide surface 301a, and the rear end portion 203 ′ is in contact with the second guide surface 404 ′. .

  Therefore, it is avoided that the shaft 103 and the rear end portion 203 'slide simultaneously. At this time, since the shaft 103 passes through the inclined portion 301a ″ immediately before, the speed toward the vehicle rear side as a whole of the pedal bracket 200 ′ is once decelerated. Therefore, in part of the pedal bracket 200 ′. The speed toward a vehicle rear side of a certain rear end portion 203 ′, that is, the speed toward the second guide surface 404 ′ is also once reduced, and the rear end portion 203 ′ is compared with the case where the inclined portion 301a ″ is not provided. Colliding with the second guide surface 404 ′ at a slower speed. For this reason, the impact at the time of rear end part 203 'colliding with 2nd guide surface 404' can be relieved.

  Thereafter, as shown in FIG. 8 (e), the rear end 203 ′ slides on the second guide surface 404 ′ with the shaft 103 and the first guide surface 301a ′ spaced apart, and the pedal bracket 200 ′ and the pedal The posture of 100 is further changed. In the course of these series of processes, the pedal bracket 200 'bends further and eventually breaks when reaching the elastic limit. Although not shown in the figure, the operation rod 13 is also bent. Then, the pad portion 102 is guided further forward of the vehicle.

  Thus, in the pedal support structure B of the present embodiment, the shaft 103 and the rear end portion 203 ′ are prevented from sliding simultaneously, and the inclined portion 301a ″ is provided at the sliding end portion of the first guide surface 201a ′. Since it is formed, it is possible to reduce the impact when the rear end portion 203 ′ collides with the second guide surface 404 ′ and the change in the moving speed of the pedal bracket 200, and to realize smooth transition and sliding. The inclined portion 301a ″ Since the purpose is to reduce the speed of the rear end portion 203 ′ toward the second guide surface 404, the inclination angle of the rear end portion 203 ′ is higher than that of the other portions of the first guide surface 301a ′. What is necessary is just to set so that it may come closer to the direction orthogonal to the direction which goes to 2 guide surface 404 '. In the present embodiment, since the second guide surface 404 ′ is disposed on the vehicle rear side with respect to the rear end portion 203 ′, the inclination angle of the inclined portion 301 a ″ is set to be more vertical as described above.

  Further, since the inclined portion 301a ″ can be formed by only slightly bending the lower end portion of the first guide surface 301a ′, the speed of the rear end portion 203 ′ toward the second guide surface 404 ′ can be reduced with a simple configuration. In addition, the inclined portion 301a ″ may be linearly inclined, but by forming it with a curved surface, the shaft 103 can slide more smoothly.

  Further, in the present embodiment, the first guide surface 301a 'and the second guide surface 404' are configured in parallel and linearly. In such a configuration, assuming that the input load on the pedal bracket 200 ′ is substantially constant during the sliding of the shaft 103 and the rear end portion 203 ′, the load acting on the instrument panel reinforcement 5 is also substantially constant. No sudden fluctuation occurs.

<Other embodiments>
In the above embodiment, each guide surface (301a, 301a ′, 404, 404 ′) is configured to be inclined linearly, but may be a curved surface. Furthermore, in the above embodiment, the shaft 103 and the rear end portion 203 are the contact portions. However, the position of the contact portion is not limited to this, and can be appropriately set to any position of the pedal 100 and the pedal bracket 200. Moreover, you may form a contact part by fixing the member different from the pedal 100 or the pedal bracket 200 to this integrally.

It is the schematic of the pedal support structure A which concerns on one Embodiment of this invention. It is a figure which shows the outline of the compartment front part of the left-hand drive vehicle to which the pedal support structure A was applied. It is an exploded view (partially broken) of the component parts of the pedal support structure A. (A) is a cutaway view showing a fixing structure of the pedal bracket 200 by the first guide member 300 in a normal state, and (b) is a state where the fixing of the pedal bracket 200 by the first guide member 300 is released from the state of FIG. FIG. (A) thru | or (f) is an effect | action explanatory drawing of the pedal support structure A. FIG. (A) is a figure which shows the example of a design of the surface of the rear-end part 203, It is a principal part schematic of the pedal support structure B which concerns on 2nd Embodiment of this invention. (A) thru | or (e) is an effect | action explanatory drawing of the pedal support structure A. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dashboard 5 Instrument panel reinforcement 100 Pedal 102 Pad part 103 Axis (contact part)
200 Pedal bracket 203 Rear end (contact portion)
300 1st guide member 301a 1st guide surface 400 2nd guide member 404 2nd guide surface

Claims (4)

A pedal unit having a pedal and a bracket that rotatably supports the pedal, and a guide member having a guide surface on which a contact portion provided in the pedal unit slides,
When the bracket moves to the vehicle rear side, the contact portion changes the posture of the pedal unit by sliding on the guide surface, and the pedal pad portion is prevented from moving to the vehicle rear side. In the vehicle pedal support structure in which the guide surface is set to
And a second contact portion provided before and Symbol first abutting portion provided on the pedal as an abutment on the bracket,
The guide member is supported by an instrument panel reinforcement of a vehicle, and a first guide surface on which the first contact portion slides and a second contact portion on which the first contact portion slides as the guide surface. 2 guide surfaces,
The first and second contact portions and the first and second guide surfaces are
When the bracket moves to the rear side of the vehicle, the second contact portion comes into contact with the second guide surface after the first contact portion starts to slide with respect to the first guide surface; and When the second abutting portion abuts on the second guide surface, the first abutting portion is in a normal direction of the first guide surface and is separated from the first guide surface. A pedal support structure for a vehicle, wherein the pedal support structure is set so as to cause a relative displacement in a direction with respect to the first guide surface. The first guide surface and the second guide surface are inclined downward toward the rear of the vehicle, and the distance between the first guide surface and the second guide surface is gradually lowered downward. Formed to be narrow,
The vehicle pedal support structure according to claim 1, wherein a distance between the first contact portion and the second contact portion is constant. The first guide surface and the second guide surface are inclined downwardly toward the rear of the vehicle in parallel with each other,
The second contact portion is formed in a planar shape so that the interval between the second contact portion and the first contact portion gradually increases as the second contact portion slides on the second guide surface. The pedal support structure for a vehicle according to claim 1, wherein the pedal support structure is used. The guide member is
When a certain load is applied to the bracket toward the rear side of the vehicle, the bracket is allowed to move toward the rear side of the vehicle. On the other hand, the first and second contact portions and the first portion are normally allowed. A fixing portion for fixing the bracket so that the first and second guide surfaces are separated from each other;
The pedal support structure for a vehicle according to claim 1, wherein the bracket is fixed to the fixing portion and a dash panel of the vehicle.

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