JP3643149B2 - Footrests for motorcycles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a footrest on which a driver or a passenger puts his / her foot in a vehicle such as a motorcycle.
[0002]
[Prior art]
In motorcycles, the footrest on which the driver puts his feet is often used as a retractable type that turns around the vehicle body, that is, when traveling on a curve, i.e., when traveling on a bank, turning the vehicle body to avoid interference with the road surface. Yes. This type is provided with a return spring that is attached to the vehicle body so as to be tiltable and that always urges the footrest to return it to the normal use position. In the case of a two-seater motorcycle, a passenger's footrest is attached to the rear of the vehicle body. This passenger footrest is also generally retractable. However, a mechanism is provided to prevent the passenger from being easily returned to the use position while being stored in the storage position rotated toward the vehicle body. The mechanism is disclosed in, for example, Japanese Patent Application Laid-Open Nos. 59-45276 and 59-45179.
[0003]
The former footrest has a base end sandwiched between U-shaped brackets and is tiltably pin-coupled, and a steel ball interposed between the base end and the bracket and biased by a spring is attached to the bracket. By being engaged with the formed engagement hole, it is held at the storage position. In the latter case, the base end portion is similarly pin-coupled to the bracket, and a spring interposed between the bracket and the base end portion engages with an engaging protrusion formed on the base end portion. It is designed to be held in the storage position.
[0004]
[Problems to be solved by the invention]
In any of the above mechanisms, the base end portion of the footrest is attached to the bracket via a pin so as to be tiltable. In such a case, since there is a gap between the pin and the hole through which the pin passes (formed on both the footrest and the bracket), rattling in the direction perpendicular to the axis of the pin is inevitable. . In the former case, since the biasing force of the spring is applied in the axial direction of the pin, the rattling is not eliminated by the spring. On the other hand, in the latter case, rattling is prevented because the biasing direction of the spring is perpendicular to the pin. However, since this spring cannot be mounted without a fixing member such as a screw, the number of parts increases and the assembly becomes complicated.
[0005]
The present invention has been made in view of the above circumstances, and is compatible with prevention of rattling in a direction perpendicular to the axis of the pin for tilting mounting, and suppression of increase in the number of components and complication of assembly. The purpose is to provide footrests for motorcycles.
[0006]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and claim 1 can be tilted over two positions of a use position protruding toward the vehicle body side and a storage position stored on the vehicle body side. A footrest main body mounted via a pin on a fixed portion provided on the vehicle body side, and a biasing member that locks the footrest main body at the storage position, wherein the biasing member includes: By pivotally supporting the pin, in surface contact with the fixed portion and rotating together with the footrest, the footrest main body and the fixed portion apply a reaction force in a direction perpendicular to the axis of the pin, thereby The footrest main body is locked at the storage position .
According to a second aspect of the present invention, a recess is formed in the footrest body, and the biasing member is disposed in the recess.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a footrest according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
A. Configuration of the footrest The footrest 1 of the present embodiment shown in Figs. 1 to 3 is for passengers sitting on a rear seat of a motorcycle (not shown), and is provided on the left side of the rear portion of the vehicle body. 1 and 3 are front views of the footrest 1 as viewed from the front, and FIG. 2 is a view taken along the line II-II in FIG. In these drawings, reference numeral 2 denotes a footrest main body 2, FIG. 1 shows a position where the footrest main body 2 is in a use position in a state of protruding to the left side of the vehicle body, and FIG. Each case is shown.
[0008]
The footrest body 2 has a rectangular cross section, and a footrest portion 5 extends in a tapered shape from a base end portion 4 in which a groove (recess) 3 is formed. The plate 6 is attached. The footrest body 2 has a base end portion 4 attached to a bracket (fixed portion) 10 fixed to a vehicle body frame (not shown) via a pin 20 so as to be tiltable. The bracket 10 is a bifurcated member having a U-shaped cross section having a rear wall portion 11 and a pair of side wall portions 12, and the rear wall portion 11 is fixed to the vehicle body frame by means such as welding or bolting. The footrest body 2 has a base end portion 4 sandwiched between the side wall portions 11 of the bracket 10 and is pin-coupled by the pins 20 penetrating both sides. The pin 20 is retained by a split pin 21.
[0009]
The footrest body 2 rotates about 90 ° between the use position S1 of FIG. 1 and the storage position S2 of FIG. In the use position S1, the base end portion 4 comes into contact with the rear wall portion 11 of the bracket 10, the footrest portion 5 becomes substantially horizontal, the rubber plate 6 faces upward, and the bracket 10 receives a load. When the footrest body 2 is rotated upward from the use position S1, the footrest body 2 is folded to the storage position S2. In the storage position S2, further rotation is prevented by the moderation generated by the urging force of the spring 30, and the footrest portion 5 becomes substantially vertical.
[0010]
The state of the footrest body 2 is held by a spring (biasing member) 30 at two positions, a use position S1 and a storage position S2. The spring 30 is made of an elastically deformable material such as resin, and has a rectangular plate shape with a pin passage hole 31 formed in the center. A J-shaped slit 32 is formed around the pin passage hole 31. ing. An elastic piece 33 is provided outside the slit 32. The elastic piece 33 is divided into first and second elastic portions 33a and 33b from the end side. The spring 30 is fitted in the groove 3 of the base end portion 4 of the footrest main body 2, and the pin 20 is passed through the pin through hole 31 and stored in the bracket 10.
[0011]
The spring 30 rotates integrally with the footrest main body 2, and as shown in FIG. 1, when the footrest main body 2 is in the use position S <b> 1, the opening of the slit 32 faces downward and the first elastic piece 33 has a first opening. The elastic portion 33a comes into contact with the rear wall portion 11 of the bracket 10 in surface contact . As shown in FIG. 3, when the footrest body 2 is in the storage position S <b> 2, the second elastic portion 33 b of the elastic piece 33 comes into contact with the rear wall portion 11 of the bracket 10 in surface contact . The elastic piece 33 is always in elastic contact with the rear wall portion 11 of the bracket 10. Therefore, the footrest main body 2 and the bracket 10 give reaction force to each other in the direction orthogonal to the axis of the pin 20. Therefore, the footrest body 2 and the pin 20 are always urged by the spring 30 toward the side of the vehicle body (in the direction indicated by the arrow F in FIGS. 1 and 3) perpendicular to the axis of the pin 20.
[0012]
Further, during the rotation of the footrest body 2, the corner end surface 33 c formed by bending between the first and second elastic portions 33 a and 33 b is in sliding contact with the rear wall portion 11 of the bracket 10. The corner end surface 33c and the pin through hole 31 are concentric circles, and the distance (radius) R from the center of the pin through hole 31 to the corner end surface 33c and the end surfaces of the first and second elastic portions 33a and 33b. Comparing the distance L, R is set slightly larger. Therefore, during the pivoting operation of the footrest body 2, the corner end face 33c is strongly in contact with the rear wall portion 11 of the bracket 10, so that the resistance increases and the action of the snap ring is exhibited.
[0013]
B. Action and effect of footrest According to the footrest 1 of the present embodiment, when the footrest body 2 is rotated from the use position S1 to the storage position S2 or vice versa, the corner end face 33c is in the middle of the rotation. Is strongly abutted against the rear wall portion 11 of the bracket 10 to increase the resistance, and then is locked at any position by the action of a snap ring released from the resistance.
[0014]
In the use position S1, the first elastic portion 33a of the elastic piece 33 of the spring 30 is elastically deformed, and the reaction force causes the footrest body 2 and the pin 20 to always urge toward the side of the vehicle body perpendicular to the axis of the pin 20. Is done. As a result, the footrest body 2 always abuts against the pin 20 to prevent rattling between the two, and the footrest body 2 does not rotate upward even when a light force is applied, and is engaged with the use position S1. Stopped. Further, in the storage position S2, the second elastic portion 33b of the elastic piece 33 of the spring 30 is elastically deformed, and the footrest body 2 and the pin 20 are always on the side of the vehicle body perpendicular to the axis of the pin 20 by the reaction force. Be energized. As a result, the footrest body 2 always abuts against the pin 20 to prevent rattling between the two, and does not easily return to the use position S1.
[0015]
According to the footrest 1, rattling of the footrest body 2 in the direction orthogonal to the pins 20 is prevented by the urging force of the spring 30. Since the spring 30 is fitted by inserting the pin 20 through the groove 3 of the base end portion 4 of the footrest body 2, the spring 30 can be fitted without a fixing member such as a screw, and the number of parts is increased. Further, complication of assembly can be suppressed. Further, since the spring 30 is fitted in the groove 3, space saving is achieved.
[0016]
C. Modification Examples The present invention is not limited to the above-described embodiment, and various modifications can be made. Examples are listed below.
(1) Instead of the spring 30, the rubber 40 and the plate spring 41 shown in FIGS. Both of them have the same shape as the spring 30 and exhibit the first and second elastic portions 33a and 33b that elastically contact the rear wall portion 11 of the bracket 10 at the use position S1 and the storage position S2 and the snap ring action. Each corner end face 33c is formed.
(2) A thin metal plate or the like for preventing wear is attached to the end face of the elastic piece 33 of the spring 30 that is in sliding contact with the rear wall portion 11 of the bracket 10.
(3) Applicable to driver's footrest. Or if the torsion coil spring which always returns to use position S1 instead of a spring as a footrest for drivers | operators is mounted | worn, a footrest main body can be shared and it leads to a cost reduction.
[0017]
【The invention's effect】
As described above, according to the present invention, rattling in the direction orthogonal to the pins of the footrest body is prevented by the biasing force of the spring, and an increase in the number of parts for mounting the spring and complication of assembly are suppressed. There is an effect that is. Further, since the spring is disposed in the recess of the footrest body, space saving can be achieved.
[Brief description of the drawings]
FIG. 1 is a front view of a footrest in a use position according to an embodiment of the present invention.
FIG. 2 is a view taken along the line II-II in FIG.
FIG. 3 is a front view of the footrest in the storage position.
FIG. 4 is a front view of rubber as an example of a spring change.
FIG. 5 is a front view of a plate spring that is a modification of the spring.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Footrest, 2 ... Footrest main body, 3 ... Groove (recess), 10 ... Bracket, 20 ... Pin, 30 ... Spring, S1 ... Use position, S2 ... Storage position.

Claims (2)

A footrest body mounted via a pin on a fixed portion provided on the vehicle body side so as to be freely tiltable over two positions of a use position protruding toward the vehicle body side and a storage position stored on the vehicle body side; A footrest including a biasing member that locks the footrest body in the storage position,
The biasing member is pivotally supported by the pin, is in surface contact with the fixed portion and rotates together with the footrest, and the footrest body and the fixed portion react with each other in a direction perpendicular to the axis of the pin. A footrest for a motorcycle or the like, wherein the footrest main body is locked at the storage position by giving each other. A recess is formed in the footrest body,
The footrest of a motorcycle or the like according to claim 1, wherein the urging member is disposed in the recess.

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