JPH01275296A - Pedal for bicycle, position of which can be adjusted - Google Patents

Abstract

PURPOSE: To arrange a pedal at a position close to a crank arm in response to a size of a shoe or an ankle by providing a means for adjusting relative position of a pedal main body to a pin in a direction nearly parallel with a shaft of the pin. CONSTITUTION: A bicycle pedal 1 capable of being adjusted in the axial direction of a pedal pin 3 is provided with a pedal main body 2 installed freely to be rotated in the pin 3 fixed to a pedal crank 4, and provided with a means for adjusting relative position of the pedal main body 2 to the pin 3 in a direction nearly parallel with a shaft of the pin 3. With this structure, a cyclist can move the pedal 1 along a line parallel with the shaft of the pedal pin 3, and the pedal 1 can be arranged at a position as close as possible to the crank arm 4 in response to the size of a shoe and an ankle of the cyclist.

Description

[Detailed Description of the Invention] <Industry> Second Field of Application The present invention is used for bicycles, etc., which are operated by the cyclist's shoes and are equipped with a pedal body rotatably attached to a pedal pin fixed to a pedal crank. The present invention relates to a bicycle pedal in which the position of the pedal pin is adjustable in the axial direction.

BACKGROUND OF THE INVENTION Mounting the pedals close to the crank minimizes the bending and torsional deformation of the crank arm that occurs when a cyclist pedals, thereby reducing wasted power. The ideal position of the pedals varies from person to person depending on the shape and size of the cyclist's shoes or ankles.

Most of the cycling shoes sold today have a structure in which the appropriate position with respect to the pedals can be slightly adjusted using studs, and the foot position can be moved somewhat along the axis of the pedal pin.

<Problems to be Solved by the Invention> However, the amount of adjustment is relatively small, and it is necessary to make the adjustment with the shoes removed from the pedals.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bicycle pedal in which the relative position of the pedal to the pedal pin can be adjusted over a wide range without removing the shoe from the pedal.

<Means for Solving the Problems> In order to achieve the above object, a bicycle pedal of the present invention whose position is adjustable in the axial direction of the pedal pin is rotatably mounted on a pin fixed to a pedal crank. The present invention is characterized in that it includes a pedal body and means for adjusting the relative position of the pedal body and the pin in a direction approximately parallel to the axis of the pin.

<Function> By providing means for widely adjusting the position of the pedal body in the axial direction of the pedal pin, it becomes possible for any cyclist to move the pedal body to an optimal position.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 4 show a bicycle pedal 1, which is operated by the cyclist's shoes and is rotatably mounted on a pedal pin 3 fixed to the outer end of a crank arm 4 of the pedal. The pedal body 2 is provided with a pedal body 2.

When the pedal is in the position shown in FIGS. 1 and 2, when the cyclist applies a force F to the pedal, a torsional moment FXb acts on the crank arm of the pedal.

Here, the symbol is the line on which force F acts and the crank arm 4
It shows the distance between. This torsional moment causes a torsional deformation of the crank, which results in part of the force applied by the cyclist being wasted.

The position shown in Figures 3 and 4, i.e. 4
At the 5° angle position, a twisting moment of FXb×cos 45° and a bending moment of FXbx 5in45° act on the crank arm 4. In this case, a portion of the force applied by the cyclist will be wasted causing both torsional and bending deformations of the crank arm 4.

Using the pedals of the invention, the cyclist can
It is now possible to adjust the position of the shoe in the axial direction of the crank arm, allowing the shoe to be placed as close as possible to the crank arm.

5 to 7, the main body 2 of the pedal 1 according to the invention is rotatably mounted on a pin 3 via a cylindrical casing 5. As shown in FIGS. The casing 5 has a rolling bearing 6
．． A retaining link 8.9 is rotatably attached to the pin 3 by 7 and prevents relative movement in the axial direction with respect to the pin 3.
It is maintained by The casing 5 is further slidably inserted into a cylindrical hole 10 formed in the pedal body 2 with its axis aligned with the pin axis. As shown in FIG. 7, the casing 5 has holes 1 on its outside.
The rib 11 is formed in the longitudinal direction and is slidably fitted into the groove I2 formed in the wall of the 0. in this way,
The pedal body 2 is slidably mounted on the casing 5 in the axial direction of the pin 3, but is connected to the casing 5 in the circumferential direction in order to rotate together with the casing 5.

A nut 13 is mounted on the inner end of the casing 5 and is screwed into a threaded shaft 14 .

The threaded shaft 14 is mounted in a hole 15 formed in the wall 16 of the pedal body 2 so as to be rotatable around the pin shaft. The threaded shaft 14 is also held against axial movement with respect to the wall 16 by a retaining ring 17;
This retaining ring 17 fits into a circumferential groove formed in the shaft 14 and is locked to the inner surface of the wall portion 16.

Further, the shaft 14 includes a holding head 18 with a large diameter provided inside a cylindrical spacer 19 interposed between the bearing 7 and the nut 13. A polygonal recess 20 is provided at the inner end of the shaft i4, and by inserting an operation key 21 into the recess 20 and rotating it, the shaft 14 can be rotated. The end of the shaft 14 is threaded and is locked in a particular position by a lock nut 22 which is threaded onto this end.

If the shaft 14 is rotated by the operation key 21, the nut 13 will move in the axial direction with respect to the shaft 14, and as a result,
With respect to the pin 3 and the casing 5, the entire pedal 2 moves along the axis of the pin 3. FIG. 5 shows a state in which the pedal body 2 approaches the threaded end 3a of the pin 3 screwed to the crank. FIG. 6 shows a state in which the pedal body 2 is separated from the end portion 3a.

It should be noted that the present invention is not limited to the embodiments described above, and those skilled in the art will be able to imagine various modifications. It should be understood that such modifications are included within the scope of the present invention as long as they do not depart from the spirit of the present invention.

<Effects of the Invention> Since the present invention is configured as described above, the cyclist can move the pedals along a line parallel to the axis of the pedal pin, and the size of the cyclist's shoes or ankles can be adjusted. Accordingly, the pedal can be placed as close as possible to the crank arm.

[Brief explanation of the drawing]

1 and 2 are a front view and a side view of a bicycle pedal equipped with a crank; FIGS. 3 and 4 are a front view and a side view of the pedal in a different position from those in FIGS. 1 and 2; Fifth
FIG. 6 is a cross-sectional view of the pedal according to the present invention in the first operating position, FIG. 6 is a partial cross-sectional plan view of the pedal according to the present invention, and FIG.
The figure is a sectional view taken along the line ■--■ in FIG. 6. ■ Pedal, 2 ・Pedal body, 3...Pin, 4...Crank arm, 5 Casing, IO...Cylindrical hole, 1
4...shaft, 2o...recess, 21...operation key, 22
・Rocknut patent applicant Campagnolo Esse・
Engineering, Shi Erle Representative Patent Attorney 1 person prGi 1 06.3 MIG, 2 r+6.4

Claims (1)

[Scope of Claims] 1. A bicycle pedal that is operated with a cyclist's shoes and includes a pedal body (2) rotatably attached to a pin (3) fixed to a pedal crank (4); (
3) A bicycle pedal whose position is adjustable, characterized in that it is provided with means for adjusting the relative position of the pedal body (2) with respect to the pin (3) in a direction substantially parallel to the axis of the pedal body (2). 2 The pedal body (2) is fitted with a cylindrical casing (5) rotatably attached to a predetermined position of the pedal pin (3), and is rotatably attached to the pin (3) via this casing (5). Claim 1, characterized in that the pedal body (2) is provided with means for adjusting the relative position of the pedal body (2) with respect to the casing (5) along the axis of the pedal pin (3).
Bicycle pedals with adjustable position as described. 3. The casing (5) has a pair of rolling bearings (6, 7)
3. The adjustable bicycle pedal according to claim 2, wherein the bicycle pedal is rotatably mounted on the pin (3). 4. The casing (5) has a cylindrical body and is slidably mounted in a cylindrical hole (10) formed in the pedal body (2) coaxially with the pedal pin (3). 3. An adjustable bicycle pedal according to claim 2. 5. The casing (5) is provided with at least one rib (11) in the longitudinal direction of the outside thereof, which is slidably fitted into a groove (12) formed in the wall of the cylindrical hole (10), 5. The position-adjustable bicycle pedal according to claim 4, wherein the pedal body (2) does not rotate with respect to (5). 6. The means for adjusting the axial position of the pedal body (2) with respect to the casing (5) includes screws and nuts (1).
3. The position-adjustable bicycle pedal according to claim 2, characterized in that it is constructed by a combination of 3 and 14). 7. The combination of screws and nuts (13, 14) consists of a nut (13) that threads into a threaded shaft (14) mounted on the casing (5), and this threaded shaft (14)
7. The adjustable bicycle pedal according to claim 6, wherein the pedal pin (3) is rotatably held at a predetermined axial position relative to the pedal body (2). 8. The threaded shaft (14) has an end protruding from the pedal body (2) and a polygonal recess for inserting the operation key, and the outside thereof is threaded so that the shaft (14) can be placed in any position. 8. An adjustable bicycle pedal according to claim 7, characterized in that it is threadedly engaged with a lock nut (22) for locking the bicycle pedal.