JP3951238B2 - 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, in the pedal support structure as in Patent Document 1, when an impact load is input to the guide surface, this acts on the instrument panel reinforcement, but if it acts excessively, the instrument panel reinforcement may break in some cases. However, the instrument panel reinforcement cannot receive the reaction force when the pedal bracket is bent. In this case, the pedal bracket is surely deformed by an aimed amount, and a change in the posture cannot be sufficiently obtained, and a situation in which the relative movement of the pedal pad portion relative to the rear of the vehicle cannot be sufficiently suppressed may occur.

  In order to avoid this, it is possible to structurally strengthen the instrument panel reinforcement, but this is not desirable because it increases the size and weight. Moreover, in order to relieve the impact load acting on the instrument panel reinforcement, it is possible to set the inclination of the first half of the guide surface to be relatively gentle. For example, even in Patent Document 1, the guide surface of the vehicle body side sliding member has a relatively gentle slope in the first half portion in order to reduce the collision load against the instrument panel reinforcement and smoothly release the pedal bracket. In the latter half, the inclination is set to be steep so as to obtain a large change in the posture of the pedal bracket.

  However, in the pedal support structure of Patent Document 1, since such a function is realized using a single guide surface, the guide surface tends to be long in the front and rear and up and down directions, 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 and to make it compact.

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 A guide member is supported by an instrument panel reinforcement of the vehicle, and a first guide surface on which the first contact portion slides as the guide surface and a second slide on which the second contact portion slides. 2 guide planes The first and second abutment portions and the first and second guide surfaces when the bracket moves to the vehicle rear side, the first abutment against the first guide surface. The second abutting portion is provided so as to abut on the second guide surface after the sliding of the portion starts, and the first abutting portion is located closer to the front side of the vehicle than the second abutting portion, on the front side of the vehicle than the first guide surface is the second guide surface, their respective been placed, and, together with the offset arrangement of the first and second contact portions in the vehicle width direction, wherein By disposing the first and second guide surfaces in the vehicle width direction corresponding to the positions of the first and second contact portions, the first and second contact portions and the A pedal support structure for a vehicle is provided in which the first and second guide surfaces are arranged substantially horizontally.

  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.

Moreover, on the front side of the first vehicle than the abutting portion and the second contact portion, the front side of the vehicle than the first guide surface is the second guide surface, their respective been placed In addition, the first and second contact portions are arranged to be shifted in the vehicle width direction, and the first and second guide surfaces correspond to the positions of the first and second contact portions. Since the first and second contact portions and the first and second guide surfaces are disposed substantially horizontally by being shifted in the vehicle width direction, the first contact portion is It is possible to avoid a situation that is not originally planned such that the second guide surface or the second contact portion contacts the first guide surface, and the interval in the vehicle front-rear direction of each of these configurations. The layout can be made compact because it can be laid out. Furthermore, since these components are arranged in a substantially horizontal direction, the space in the vertical direction is reduced, so that the overall size can be extremely reduced.

  Further, by arranging these components in a substantially horizontal direction, the bracket can take a longer length in the vehicle front-rear direction than in a layout in which these components are arranged in the vertical direction. If the length of the bracket in the longitudinal direction of the vehicle can be increased, the impact load generally acts in the longitudinal direction of the vehicle, so that it is easy to apply a bending load to the bracket. Furthermore, it is possible to fix the bracket at two locations spaced in the longitudinal direction of the vehicle, and it is possible to more stably support the bracket during normal times.

In addition, among the first and second contact portions, the first contact portion is provided on the pedal and the second contact portion is provided on the bracket, so that the bracket can be made compact. As a result, the entire support structure can be made compact. In other words, the order acts impact load in the abutting portion, where high rigidity is required, by allocating only the front Stories second contact portion to the bracket, also sufficient in one place site to increase the rigidity As compared with the case where both the abutting portions are assigned, the portion where the rigidity should be increased is reduced, so that the bracket can be miniaturized and can be bent with a smaller load. Further, the pedal because they are designed inherently high stiffness does not cause the increase in size of the pedal be assigned before Symbol first contact portion.

  In the present invention, the bracket has an end portion on the vehicle rear side and an end portion on the vehicle front side fixed to the dash panel of the vehicle, and the pedal is connected to the bracket via the shaft. An upper end portion supported at an end portion on the vehicle rear side, and a lower end portion that constitutes the pad portion, wherein the first contact portion is formed on a part of the shaft, and The contact portion may be formed on the rear end surface of the end portion of the bracket on the vehicle rear side.

  According to this configuration, the first and second contact portions are provided at the end portion of the bracket on the vehicle rear side, so that they are close to each other, and further downsizing can be achieved. Furthermore, since the bracket receives a load from both ends thereof, a bending moment is applied to the bracket more greatly, so that the bending can be easily caused. Furthermore, since the second contact portion is disposed farther from the vehicle front side end portion fixed to the dash panel of the vehicle than the first contact portion, the second contact portion is When the second guide surface is slid, a larger bending moment is applied to the bracket, so that the bracket can be reliably deformed by an aimed amount.

  In the present invention, the rear end surface of the end portion of the bracket on the vehicle rear side may form a curved surface that is continuous with the upper end surface of the end portion. According to this configuration, after the rear end surface constituting the second contact portion slides on the second guide surface, the upper end surface of the bracket is also moved to the second guide surface. Can be slid. Therefore, further downsizing can be achieved while increasing the sliding distance with respect to the second guide surface. In addition, since the rear end surface forms a curved surface continuous with the upper end surface, the upper end surface smoothly slides on the second guide surface after the rear end surface slides on the second guide surface. Can be made.

  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, it is possible to improve the degree of freedom of the layout of the guide surface that guides the change in the posture of the pedal bracket and to make it compact.

  Preferred embodiments of the present invention will be described below with reference to the drawings. 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 integrally fixed to the arm portion 101, and the shaft 103 is inserted into and supported by a hole 201a provided in the pedal bracket 200.

  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 at 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 surface 203 formed in the rear end part which is an edge part, and the front-end part 204 formed in the vehicle front side of the side-plate part 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, a hole 201 a into which the shaft 103 of the brake pedal 100 is inserted is provided in the side plate portion 201 at the rear end portion of the pedal bracket 200, and the upper portion of the arm portion 101 of the brake pedal 100 is located between the side plate portions 201. Be placed. 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 surface 203 forms an arcuate curved surface that is continuous with the upper end surface of the upper end portion 202. The rear end surface 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 constituting the guide member 250 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, a shelf plate portion 302, and a side plate portion 301 formed at intervals in the vehicle width direction. And an attachment surface 303 for attaching the first guide member 300 to the second guide member 400. The mounting surface 303 is formed so that the surface direction is the vehicle width direction and is directed to the vertical direction of the vehicle at a predetermined angle. In the present embodiment, the mounting surface 303 is inclined downward toward the rear of the vehicle. 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. Since the pair of side plate portions 301 are formed at intervals, a space is formed between the side plate portions 301 so that the lower side is open. For this reason, the portion around the rear end surface 203 of the pedal bracket 200 is in a state of entering between the side plate portions 301.

  Next, a fixing portion 302 a for fixing the pedal bracket 200 is provided on the shelf plate portion 302 of the first guide member 300. 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 has a screw hole penetrating in the vertical direction, and the shelf plate portion 302 below the screw hole is also provided with a hole.

  Accordingly, the upper plate portion 202 of the pedal bracket 200 is overlapped under the shelf 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 the lower side of the upper plate portion 202 so as to pass through the slots 202 a and the holes of the shelf 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 shelf 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. In this embodiment, since 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 of the pedal bracket 200. . 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. However, the shaft 103 may be in contact with the first guide surface 301a from the beginning instead of contacting the shaft 103 and the first guide surface 301a apart from each other.

  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. A pair of side plate portions 402 formed at intervals, a mounting surface 403 formed on the front side of the vehicle to which the first guide member 300 is attached, and a second guide surface 404 formed on the front side of the vehicle. Prepare. The mounting surface 403 is similarly inclined in the same direction as the mounting surface 303.

  The second guide surface 404 functions as a guide surface on which the rear end surface 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. Is. In the present embodiment, the second guide surface 404 is disposed on the vehicle rear side with respect to the rear end surface 203 and is formed so as to be linearly inclined downward toward the vehicle rear. Further, the second guide surface 404 is arranged on the vehicle rear side of the first guide surface 301a so as to be aligned with the first guide surface 301a, and both are arranged in the front-rear direction of the vehicle. By doing so, it is possible to reduce the occupied space in the vehicle vertical direction of the first and second guide surfaces 301a and 404, and to achieve compactness.

  The shaft 103, the rear end surface 203, the first guide surface 301 a, and the second guide surface 404 are arranged so that the shaft 103 is the first guide when the pedal bracket 200 moves to the vehicle rear side relative to the vehicle body. The mutual arrangement relationship is set such that the rear end surface 203 slides in contact with the second guide surface 404 during or after the sliding of the surface 301a. 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.

  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 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 102 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. As described above, in the present embodiment, by providing two sets of the contact portion (the shaft 103, the rear end surface 203) and the guide surfaces (the first guide surface 301a and the second guide surface 404), the layout can be improved as compared with the case of one set. The degree of freedom can be increased. 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. And the degree of freedom in layout can be improved.

  In the present embodiment, the shaft 103 and the rear end surface 203 are disposed in the vehicle front-rear direction, and the first guide surface 301a and the second guide surface 404 are disposed in the vehicle front-rear direction. Further, when viewed from the front of the vehicle, the portion of the shaft 103 that contacts the first guide surface 301a (the portion protruding from the side plate portion 201 of the pedal bracket 200) is located on the left and right of the rear end surface 203. They are shifted in the vehicle width direction. And the 1st guide surface 301a is located in the right and left of the 2nd guide surface 404 corresponding to the position of the contact part of the axis | shaft 103, and the rear-end surface 203, These are also arrange | positioned and shifted | deviated to the vehicle width direction. .

  The advantages of such a structure are as follows. First, when the pedal bracket 200 moves to the rear of the vehicle due to a frontal collision of an automobile, the shaft 103 and the rear end surface 203 move in the same direction (vehicle rear side), but the shaft 103 moves to the second guide surface 404 or Thus, it is possible to avoid a situation that is not originally planned such that the rear end surface 203 comes into contact with the first guide surface 301a. In addition, a layout in which the intervals in the vehicle front-rear direction of each of these components are narrowed is possible, so that the size can be reduced. Further, as shown in the figure, the shaft 103, the rear end surface 203, the first guide surface 301a, and the second guide surface 404 can be linearly arranged in a substantially horizontal direction, and the shaft 103, the rear end surface 203, and the second guide surface are arranged. Each position in the vertical direction of the surface 404 can be configured to fall within the range of the vertical width of the first guide surface 301a. Therefore, the space in the vertical direction is also reduced, and as a whole, it can be extremely compact. As described above, in this embodiment, the vertical width of the second guide surface 404 is within the range of the vertical width of the first guide surface 301a. However, even if they are shifted in the vertical direction, they overlap. (For example, in FIG. 1, when one of the upper end and the lower end of the second guide surface 404 protrudes from the range of the vertical width of the first guide surface 301a), the size can be reduced. It can be said that they are arranged substantially horizontally.

  Further, by arranging these components in a substantially horizontal direction, the pedal bracket 200 can have a longer length in the vehicle front-rear direction than in a layout in which these components are arranged in the vertical direction. When a frontal collision or the like of the automobile occurs, the pedal bracket 200 receives an impact load from the front end portion 204 in the vehicle front-rear direction, while the first guide surface 301a or the second guide surface via the shaft 103 or the rear end surface 203. A bending moment is applied by receiving a reaction force from 404, but if the length of the pedal bracket 200 in the vehicle front-rear direction can be increased, the position where the impact load is applied and the position where the reaction force is applied become longer, resulting in a larger bending. Moment acts. As a result, the pedal bracket 200 can be easily bent. Further, as shown in FIG. 1 and the like, the pedal bracket 200 is fixed at two locations of the dash panel 1 and the fixing portion 302a. However, since these distances can be further increased, the bracket is more stable during normal times. Can also be supported.

  Next, in the present embodiment, one of the two contact portions is set to the rear end surface 203 and the other is set to the shaft 103 integrated with the pedal 100. According to this configuration, the pedal bracket 200 can be made compact, and the support structure A as a whole can be made compact. That is, since an impact load is applied to the contact portion, high rigidity is required. However, by assigning only one contact portion (rear end surface 203) to the pedal bracket 200, there is also a portion where rigidity is increased. Compared to the case where both portions are sufficient and the both abutting portions are assigned, the number of portions where the rigidity should be increased is reduced, so that the pedal bracket 200 can be reduced in size. Moreover, since rigidity can be lowered as a whole, it is possible to bend with a smaller load. Since the pedal 100 is originally designed to be highly rigid, the existing pedal 100 can be used even if the shaft 103 is used as the contact portion, and the size of the pedal 100 is not increased.

  Next, the first guide member 300 and the second guide member 400 are integrated by bringing the attachment surface 303 and the attachment surface 403 into surface contact and fixing with a fastener such as a bolt. The second guide member 400 is supported by the instrument panel reinforcement 5 via the hanger bracket 7 by fixing the mounting surface 401 to the hanger bracket 7 with a fastener such as a bolt. For this reason, the first guide member 300 and the entire second guide member 400 are supported by the instrument panel reinforcement 5. However, the first guide member 300 may be fixed to the hanger bracket 7, or both the first guide member 300 and the second guide member 400 may be individually fixed to the hanger bracket 7.

  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 surface 203 and the second guide surface 404 are separated from each other, and the pedal bracket 200 is in the first state. The guide member 300 is fixed to the fixing portion 302a. Here, when an automobile to which the pedal support structure A is applied causes a frontal collision with an obstacle and an impact load acts on the pedal bracket 200 toward the rear side of the vehicle, as described with reference to FIG. The fixing of the pedal bracket 200 by the fixing portion 302a is released, the pedal bracket 200 and the pedal 100 slightly move toward the vehicle rear side, and the shaft 103 abuts on the first guide surface 301a (FIG. 5B). The rear end surface 203 and the second guide surface 404 are still separated.

  Thereafter, as shown in FIG. 5C, the shaft 103 is guided by the first guide surface 301a and slides on the first guide surface 301a, and the postures of the pedal bracket 200 and the pedal 100 are 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. As a result, 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 is moved to the vehicle rear side. Backward movement is suppressed. At this time, the pedal bracket 200 receives a load at the front end portion 204 from the dash panel 1 side and bends by receiving a reaction force from the first guide surface 301a supported by the instrument panel reinforcement 5 via the shaft 103. become. At this time, since the shaft 103 is provided at the rear end portion of the pedal bracket 200 in this embodiment, the distance between the shaft 103 and the front end portion 204 is long, and a large bending moment can be applied to the pedal bracket 200. The bending can be easily caused.

  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 is detached from the first guide surface 301a and the rear end surface. 203 abuts on the second guide surface 404 and slides (FIG. 5D). At this time, since the rear end surface 203 is located farther from the front end portion 204 than the shaft 103, a larger bending moment can be applied to the pedal bracket 200, and the pedal bracket 200 is reliably deformed by an aimed amount. It becomes possible. In the course of such a process, the pedal bracket 200 is further bent, and eventually reaches the elastic limit and bends. Although not shown in the figure, the operation rod 13 is also bent.

  Thereafter, the posture of the pedal bracket 200 and the pedal 100 is changed when the rear end surface 203 slides on the second guide surface 404, and the pad portion 102 is guided further forward of the vehicle. In the present embodiment, since the rear end surface 203 forms an arcuate curved surface that is continuous with the upper end surface of the upper end portion 202, even after the rear end surface 203 reaches the sliding end point of the lower end portion of the second guide surface 404. The upper plate 202 slides in contact with the lower end portion of the second guide surface 404 (FIG. 5E). For this reason, even if it is a compact structure, a longer sliding distance can be obtained and the guidance of the change of the attitude | position of the pedal bracket 200 and the pedal 100 is continued longer. Thus, in this embodiment, even when a frontal collision or the like occurs, the driver's foot space can be secured.

<Other embodiments>
In the above-described embodiment, each guide surface (301a, 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 surface 203 are the contact portions, but the position of the contact portions is not limited to this, and can be set as appropriate at any position of the pedal 100 and the pedal bracket 200. The contact portion may be formed by fixing a member different from the pedal 100 or the pedal bracket 200 integrally therewith.

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 (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 surface (contact portion)
250 Guide member 300 First guide member 301a First guide surface 400 Second guide member 404 Second 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 the first contact surface on which the first contact portion slides and the second contact portion slide as the guide surface. A second guide surface,
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
On the front side of the vehicle than the first contact portion and the second contact portion, the front side of the first vehicle even guide surface than the second guide surface of their respective been placed, and ,
The first and second contact portions are arranged to be shifted in the vehicle width direction, and the first and second guide surfaces are arranged in correspondence with the positions of the first and second contact portions. A pedal support structure for a vehicle, wherein the first and second contact portions and the first and second guide surfaces are arranged substantially horizontally by being shifted in the width direction. The bracket has an end portion on the vehicle rear side, and an end portion on the vehicle front side fixed to a dash panel of the vehicle,
The pedal has an upper end portion supported at an end portion of the bracket on the vehicle rear side via a shaft, and a lower end portion that constitutes the pad portion,
2. The first contact portion is formed on a part of the shaft, and the second contact portion is formed on a rear end surface of an end portion of the bracket on the vehicle rear side. The pedal support structure for a vehicle according to the above. The pedal support structure for a vehicle according to claim 2 , wherein a rear end surface of an end portion of the bracket on the vehicle rear side forms a curved surface continuous with an upper end surface of the end portion. 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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