JP2001270343A - Structure of accelerator pedal for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the amount of an axial clearance in the bearing part of an accelerator pedal at a low cost with a simple structure. SOLUTION: This structure of an accelerator pedal for vehicle comprises a retainer 2 fixed onto the floor panel of a vehicle and having a pair of right and left side walls 21R and 21L for connecting an accelerator pedal pad 4, the accelerator pedal pad having an engaging recessed part for engaging the side walls for connecting the accelerator pedal pad and right and left boss parts 46R and 46L located on both sides of the fitting recessed part and allowing the right and left ends of a rotating pivot shaft for connection 3 to be fitted thereto, and the rotating pivot shaft for connection rotatably connecting the accelerator pedal pad to the retainer by fitting the right and left end parts to the right and left boss parts in the state of being passed through the side walls. A position limiting rib 45 for limiting the movement of the accelerator pedal pad in the outside direction of the rotating pivot shaft is disposed at a position opposed to the boss parts adjacent to each other through either of the pair of right and left side walls for connecting accelerator pedal pad on the retainer side of the accelerator pedal pad.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an accelerator pedal for a vehicle.

[0002]

2. Description of the Related Art There are several types of accelerator pedals for vehicles. In general, in the case of a vehicle such as a truck, a lower end 4a of an accelerator pedal pad 4 is connected via a retainer 2 as shown in FIG. A floor-supported accelerator pedal that is rotatably supported on the floor panel 1 side is often used.

As shown in FIG. 3, the accelerator pedal includes a retainer 2 having a front portion 2a and a rear portion 2b fixed on a floor panel 1 on a vehicle driver's seat side according to the surface shape of the floor panel 1. The lower end 4a side is rotatably supported via a connecting rotary support shaft 3 on a pair of left and right accelerator pedal pad connecting side walls 21L and 21R cut and raised above a rear portion 2b surface of the retainer 2. An accelerator pedal pad 4; a substantially U-shaped linkage arm 5 in which a lower end 5a side is relatively rotatably engaged with an engagement portion 4c having an elongated hole structure on the back surface on the upper end 4b side of the accelerator pedal pad 4; A turning lever 6 having an upper end 5b of the linking arm 5 connected and fixed to a center portion on the turning end 6a side, and predetermined mounting bracket portions 8b and 8c;
Is attached to the cowl side panel (not shown)
An accelerator pedal assembly 8 having a shaft support end 6b of the rotary lever 6 rotatably mounted via a rotation support shaft 7 on a side wall portion 8a in the substantially vertical plane direction, and one end side of the accelerator pedal assembly 8 A return spring 9 having the other end engaged with the rotating end of the rotating lever 6;
An accelerator outer cable connecting portion 13 provided at a lower portion 8d side of the accelerator pedal assembly 8, an accelerator inner cable connecting portion 10 provided at a tip end of the turning lever 6 at a turning end 6a, and an accelerator outer cable connecting portion; The accelerator outer cable 12 fixed to the portion 13 and the accelerator inner cable connecting portion 10
And an accelerator inner cable 11 connected thereto via an engagement projection 11a.

When the upper portion of the accelerator pedal pad 4 above the rotary support shaft 3 is stepped on in the direction shown by the arrow (a), the linkage frame 5 is turned in the direction shown by the arrow (b). The rotation lever 6 finally rotates through the link frame 5 in the direction of the arrow (c) in the figure.

As a result, the accelerator wire connecting portion 1
0, the accelerator inner cable 11 is pulled in the direction of arrow (d), and the throttle valve of the engine is opened.

By the way, the accelerator pedal pad 4 of the accelerator pedal is secured to the retainer 2 on the floor panel 1 side in a stable relationship without mutual loosening and rattling in order to ensure smooth operability. It is desirable to be pivotally supported. If the shaft support has looseness or backlash, the lateral rigidity is insufficient, and the accelerator pedal pad swings left and right when the accelerator pedal is depressed, giving an uncomfortable feeling.

[0007] For this reason, both of the conventional examples are connected to each other by a relatively stable connection engagement structure as shown in FIG. 4 or 5, for example.

First, in the case of the connection structure shown in FIG. 4, the accelerator pedal pad 4 is made of a synthetic resin material, has a U-shaped cross section, has thick side walls 41L and 41R on the left and right sides, and the inside thereof. A plurality of reinforcing ribs 42a, 42a, 42b, 42b
Are integrally formed to be as light as possible and yet have sufficiently high rigidity. The upper and lower two and right and left reinforcing ribs 4 are provided at the connecting portion with the lower end 4 a side retainer 2.
2c, 42d, 43, 43 are integrally provided, and two left and right connecting side walls 21 of the lower retainer 2 which are parallel to each other.
Bosses 46L, 46R of a thick-walled cylindrical structure having fitting holes for fitting and holding the respective ends 3a, 3b of the above-mentioned connecting rotary support shaft 3 on both sides of the concave portion for fitting the L, 21R. Is provided. Then, the rotary support shaft 3 having the engagement serration formed on the tip end 3a side is sequentially penetrated in the direction from the right boss portion 46R and the right connection side wall 21R to the left connection side wall 21L to finally obtain the left boss portion 46L. The accelerator pedal pad 4 and the retainer 2 are rotatably connected to each other by press-fitting and fixing as shown in the fitting holes.

In the case of the coupling structure shown in FIG. 4, the play in the axial direction of the rotation fulcrum is caused by the fulcrum width a ₁ of the retainer 2 constituting the rotation fulcrum of the accelerator pedal pad 4 and the fulcrum width b _{1 of the} accelerator pedal pad 4. It is determined by the gap amount c ₁ which is the minimum required from the rotation performance and assembling of the relationship between the machining tolerance of.

Next, in the case of the structure shown in FIG. 5, the accelerator pedal pad 4 is also made of a synthetic resin material, has a U-shaped cross section, and has thick left and right side walls 41L and 41R. A plurality of reinforcing ribs 42a, 42a, 42b, 42
are formed as one body so as to be as light as possible and yet have sufficiently high rigidity. On the other hand, two upper and lower and two left and right reinforcing ribs 42c, 42d, 43, 43 are integrally provided at the connection portion with the lower end 4a side retainer 2, and the lower side retainer 2 has parallel left and right sides. Two connecting side walls 2
The inner ends of the left and right side wall portions 41L and 41R on which the 1L and 21R are fitted are provided with both ends 3a,
Bosses 48L and 48R of a thick-walled cylindrical structure having an insertion hole for inserting and holding 3b are provided at predetermined intervals.
Then, the connecting rotary support shaft 3 having the E-ring fitting groove formed on the tip end 3a side is connected to the right connecting side wall 21R and the right boss portion 4.
6R side left boss 48L and left connecting side wall 21
L-direction side wall 21L
By fitting the E-ring into the more protruding E-ring fitting groove and fixing it as shown, the accelerator pedal pad 4 and the retainer 2 are rotatably connected to each other.

Also in the case of the connecting structure shown in FIG. 5, the play in the direction of the rotation support shaft is caused by the width of the fulcrum a ₂ of the retainer 2 constituting the rotation fulcrum of the accelerator pedal pad 4 and the width of the fulcrum of the accelerator pedal pad 4. The minimum clearance c ₂ and the E-ring groove position tolerance on the tip 3 a side and the connection side wall 21 which are required at least from the relationship between the machining tolerance b ₂ and the rotation performance and the assembling property.
In consideration of the outer width dimension tolerance of L and 21R and the thickness tolerance of the E-ring, its assemblability was considered (not shown).
Determined by adding the amounts.

[0012]

In any of the connection structures shown in FIGS. 4 and 5, in order to minimize the variation in the play in the direction of the rotation support shaft, the machining tolerance a _1, b _1, a _2, it is necessary to as much as possible strictly b _2.

On the other hand, in order to secure the rigidity and strength of the rotating shaft portion, or for the convenience of the vehicle layout, etc.
A minimum required fulcrum width (generally about 50 mm) is required. The processing tolerances a ₁ , b ₁ , a ₂ , and b ₂ are generally limited by the size of the dimension to which the tolerance is applied (the larger the applied dimension, the larger the tolerance). Although there is no other way but to minimize the tolerance, the method has limitations due to cost and the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem. A regulating member for regulating the relative movement of an accelerator pedal pad and a retainer in the direction of the rotation support shaft is provided, and the rotation support shaft direction is improved. It is an object of the present invention to provide an accelerator pedal for a vehicle in which the backlash amount is minimized.

[0015]

Means for Solving the Problems In order to achieve the above object, the present invention is provided with the following means for solving the problems.

That is, in the structure of the accelerator pedal for a vehicle according to the embodiment of the present invention, a pair of right and left accelerator pedal pad connecting side walls fixed on the floor panel of the vehicle and facing each other at a predetermined interval from each other. And a fitting recess for fitting the pair of left and right accelerator pedal pad connecting side walls of the retainer, and right and left ends of the connecting rotary support shaft on both sides of the fitting recess. An accelerator pedal pad having left and right boss portions, and left and right ends are fitted to the left and right boss portions in a state of penetrating the side wall for connecting the accelerator pedal pad. A floor-supported vehicle accelerator pedal comprising a connecting rotary support shaft connected to be relatively rotatable, wherein the retainer for the accelerator pedal pad is provided. A position restricting rib for restricting the movement of the accelerator pedal pad in the outward direction of the rotation support shaft is provided at a position opposed to the boss portion with either one of the pair of left and right accelerator pedal pad connecting side walls interposed therebetween. It is characterized by that.

In such a configuration, the outward movement of the rotary support shaft can be increased by sandwiching the retainer-side connecting side wall between the position regulating rib on the accelerator pedal pad side and the boss for fitting the rotary support shaft. Can be regulated to accuracy,
By setting the dimension on the accelerator pedal pad side to the minimum, the applicable range of the processing tolerance can be minimized.
At the same time, only the processing tolerance of the plate thickness is applied to the plate of the connecting side wall on the retainer side (in the case of a steel plate retainer, only the thickness tolerance is applied). Can be minimized.

Therefore, it is possible to minimize the backlash in the direction of the rotating shaft without increasing the cost.

[0019]

1 and 2 show the structure of an accelerator pedal for a vehicle according to an embodiment of the present invention.

The vehicle accelerator pedal of this embodiment is located near the rotation fulcrum of the accelerator pedal pad.
The retainer-side connecting side wall is sandwiched between the accelerator pedal pad-side boss portion and the slide in the direction of the rotation support shaft is regulated.

For this purpose, the accelerator pedal pad and the retainer in this embodiment are interconnected by, for example, an engagement structure as shown in FIG.

That is, in the case of the structural example shown in FIG. 1, the accelerator pedal pad 4 is made of a synthetic resin material in the same manner as in the prior art.
L, 41R, and a plurality of reinforcing ribs 42a, 42
are integrally formed to be as light as possible and yet have sufficiently high rigidity. Two upper and lower and two left and right reinforcing ribs 42c, 42d, 43, 43 are integrally provided at the connecting portion with the lower end 4a side retainer 2, and the lower left side retainer 2 is parallel to each other. Boss portion having a thick-walled cylindrical structure having fitting holes for fitting and holding the ends 3a, 3b of the above-mentioned rotary support shaft 3 on both sides of a concave portion in which the two connecting side walls 21L, 21R are fitted. 46L, 46
R is provided. Then, the rotation support shaft 3 having the engagement serration formed on the tip 3a side is inserted from the rotation support shaft insertion hole side of the right boss portion 46R and the right connection side wall 21R to the rotation support shaft insertion hole of the left connection side wall 21L. Side, and press-fit into the rotary support shaft press-fitting hole of the left boss portion 46L via a serration portion to fix the accelerator pedal pad 4 and the retainer 2 as shown in FIG. Is rotatably connected to

In this connection state, the right boss portion 46R and the tip 45a of the position regulating rib 45 face each other via the upper end of the right connection side wall 21R, and the right boss portion 46R and the right connection portion 21R are opposed to each other. The collision of the accelerator pedal pad 4 in the axial direction of the rotation support shaft 3 and the backlash are surely restricted by the abutment with the side wall 21R in both the left and right directions.

That is, in the structure of the accelerator pedal for a vehicle according to the embodiment of the present invention, a pair of left and right accelerator pedal pads fixed on the floor panel 1 of the vehicle and opposed to each other with a predetermined interval therebetween are provided. Side walls 21L, 21
R, and side walls 21L, 21R for connecting the pair of left and right accelerator pedal pads of the retainer 2
And an accelerator pedal pad 4 having left and right boss portions 46L, 46R on both sides of the fitting concave portion and the left and right ends 3a, 3b of the connecting rotary support shaft 3 to be fitted.
And the side walls 21L, 2 for connecting the accelerator pedal pad.
By connecting the left and right ends 3a, 3b to the left and right bosses 46L, 46R in a state where the accelerator pedal pad 4 penetrates the retainer 2, the connecting rotation is connected to the retainer 2. In a floor-supported vehicle accelerator pedal including a support shaft 3, a pair of left and right side walls 21R (21L or 21R) for connecting a pair of left and right accelerator pedal pads of the accelerator pedal pad 4 on the retainer 2 side. The boss portions 46R (46
L or 46R), a position regulating rib 45 for regulating the movement of the accelerator pedal pad 4 in the outward direction of the connecting rotary support shaft 3 is provided.

In such a configuration, the position regulating rib 45 on the side of the accelerator pedal pad 4 and the boss 46R (either 46L or 46R) for fitting the connecting rotary support shaft 3 adjacent to the position regulating rib 45 are provided. The connecting side wall 21R (either 21L or 21R) on the retainer 2 side is sandwiched between them so that the movement of the accelerator pedal pad 4 in the outward direction of the rotation support shaft 3 can be regulated with high precision. Thus, by minimizing the dimension on the accelerator pedal pad 4 side, it is possible to minimize the tolerance d with respect to the applicable dimension, and at the same time, one of the connecting side walls 21R (21L or 21R) on the retainer 2 side. ) Is applied only to the processing tolerance t of the plate thickness (in the case of a steel plate retainer, only the minimum tolerance t of the plate thickness is applied), so the gap amount to be further secured is minimized. DOO becomes possible, regardless of the gap amount c ₁ to be secured conventionally, since the application tolerances of machining tolerances a _1, b _1, c ₁ can be minimized (c _2), backlash comprehensively them Occurrence can be minimized.

Therefore, it is possible to minimize the play in the direction of the rotary support shaft 3 without increasing the cost.

[Brief description of the drawings]

FIG. 1 is a rear view of a main part showing a structure of a vehicle accelerator pedal according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1;

FIG. 3 is a side view showing the entire structure of an accelerator pedal of a conventional vehicle.

FIG. 4 is a rear view of a main part showing a first connection structure example of the accelerator pedal to a retainer of an accelerator pedal pad.

FIG. 5 is a rear view of a main part showing a second connection structure example of the accelerator pedal to a retainer of an accelerator pedal pad.

[Explanation of symbols]

1 is a floor panel, 2 is a retainer, 3 is a rotating shaft, 3a
Is the tip, 3b is the proximal end, 4 is the accelerator pedal pad, 4a
Is the lower end, 21L is the left side wall, 21R is the right side wall, 4
5 is a position regulating rib, 46L is a left boss, and 46R is a right boss.

Claims (1)

[Claims] 1. A retainer fixed on a floor panel of a vehicle and having a pair of left and right accelerator pedal pad side walls facing each other at a predetermined interval from each other, and the pair of left and right accelerator pedal pads of the retainer. An accelerator pedal pad having a fitting recess for fitting the side wall for connection, and left and right boss portions on both sides of the fitting recess to which left and right ends of the connecting rotary support shaft are fitted, and the accelerator pedal pad connection A left and right end portion fitted to the left and right boss portions in a state penetrating the side wall for connection, and a connecting rotary support shaft for connecting the accelerator pedal pad to the retainer so as to be relatively rotatable. In one embodiment, one of a pair of left and right side walls for connecting the accelerator pedal pad of the accelerator pedal pad is provided. And a position restricting rib for restricting the movement of the accelerator pedal pad in the outward direction of the rotation support shaft is provided at a position facing the adjacent boss portion.