JP2017007475A - Bicycle pedal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pedal in which a pedal body smoothly rotates when traveling by using the pedal, and the rotation of the pedal body is suppressed when traveling while releasing a foot from a pedal tread.SOLUTION: In a bicycle pedal, a stopper hole 2a formed in a stopper body 2 is mounted to a pedal shaft, and the stopper body 2 is mounted to a pedal body in a non-rotatable manner. An operation member 4 for bringing an inner wall of the stopper hole 2a of the stopper body away from or closer to the pedal shaft is joined to the stopper body 2 so as to transmit a rotational force of the operation member to the stopper body. A flap 5 for applying the rotational force to the operation member is provided in the operation member 4 so as to protrude from a pedal tread. In a state where the flap protrudes from the pedal tread, the inner wall of the stopper hole 2a of the stopper body 2 comes into contact with the pedal shaft. In a state where the rotational force is applied to the operation member 4 by stepping on the flap 5, the inner wall of the stopper hole 2a of the stopper body 2 and the pedal shaft are not in contact with each other.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a bicycle pedal suitable for rough road traveling on a mountain bike or the like.

When traveling on rough roads with mountain bikes, it is necessary to perform proper pedaling and balance. The important thing here is that when riding on a rough road on a mountain bike etc., not only the foot is on the pedal tread, but also the foot is moved away from the tread to balance in response to undulations. That is.
And the foot away from the tread must be able to return smoothly to the tread.

In normal traveling using a pedal, it is required that the pedal body rotates well with respect to the pedal shaft (the friction with the pedal shaft is small). However, a pedal that turns often keeps rotating at high speed even when the foot is released, so it may be difficult to catch the tread when trying to return the foot to the tread.
That is, in normal driving, the pedal body is required to turn well, and when returning a released foot, the pedal body is required to be difficult to turn.
A proposal of a bicycle pedal that satisfies such conflicting requirements has not been found as far as it is seen in the Patent Office Publication.

  The present invention provides a pedal in which the pedal body rotates smoothly when the pedal is running and the pedal body is prevented from rotating when the foot is removed from the pedal tread surface in view of the situation of the rough road running on the mountain bike or the like. Is an issue.

  In this invention, a stopper body provided with a stopper hole is attached to the pedal shaft, and the inner wall of the stopper hole is separated from the pedal shaft by the operating member, thereby increasing or decreasing the friction between the pedal shaft and the pedal body. It increases or decreases the rotational speed of the pedal body.

  A bicycle pedal is provided with a stopper body having a stopper hole inserted into the pedal shaft, and an operation member for separating and contacting the inner wall of the stopper hole of the stopper body with the pedal shaft. A stepping body for applying a rotational force is provided so as to protrude from the pedal tread surface. When the stepping body protrudes from the pedal tread surface, the inner wall of the stopper hole of the stopper body contacts the pedal shaft, and the stepping body is stepped on. Thus, the inner wall of the stopper hole of the stopper body and the pedal shaft are not in contact with each other when a rotational force is applied to the operating member.

The requirement of the stopper body is to provide a stopper hole that is separated from and in contact with the pedal shaft and to be mounted on the pedal body so as not to rotate, and the specific shape and appearance of the stopper hole are not limited. And it is not necessary to fix to a pedal body with a screw etc., and it should just be fixed in the state which does not rotate freely.
The movement of the stopper body may be either in the direction orthogonal to the axis of the pedal shaft as shown in the first and third embodiments or in the direction of the axis of the pedal shaft as shown in the second embodiment.

The requirement required for the operation member is that the rotational force generated by the stepping body being stepped on is transmitted to the stopper body, and there is an effect that a gap is formed between the inner wall of the stopper hole of the stopper body and the pedal shaft. It is.
The operation member according to claim 1, wherein the operation member for connecting the inner wall of the stopper hole of the stopper body to the pedal shaft is connected to the stopper body so that the rotational force of the operation member can be conducted to the stopper body. This means includes a structure in which the member and the stopper member are integrated to transmit rotational force, and a structure in which the member and the stopper member are joined via a transmission mechanism as in claims 3 and 4.
Further, the mounting hole of the operation member is mounted on the pedal shaft is a mode of mounting on the outside of the stopper body mounted on the pedal shaft as in the invention of claim 2, that is, indirect mounting. And a mode of being directly attached to the pedal shaft as in the third aspect of the invention. Further, as in the fourth aspect of the invention, it is also included to be mounted on another shaft parallel to the pedal shaft.

  According to the second aspect of the present invention, the mounting hole of the operation member is closely fitted to the stopper body, the stopper hole of the stopper body is positioned eccentric to the axis of the pedal shaft, and the stopper body is made of a synthetic resin having elasticity. And, when the stepping body of the operation member is stepped on and the rotational force is applied to the operation member, the stopper body is twisted so that the inner wall of the stopper hole of the stopper body does not contact the pedal shaft. is there.

  According to a third aspect of the present invention, the inner wall of the stopper hole of the stopper body has a shape corresponding to the tapered portion of the pedal shaft, the stopper body is mounted on the pedal shaft so as to be movable in the axial direction, and the operation member is rotatable on the pedal shaft. Install so that it cannot move in the axial direction. Then, the operating member and the stopper body are joined by a cam mechanism that converts the rotational motion of the operating member into the reciprocating motion of the stopper body in the pedal axis direction, and the operating member is stepped on and the rotational force is applied to the operating member. In the applied state, the stopper body moves along the pedal shaft so that the inner wall of the pedal insertion shaft of the stopper body does not come into contact with the pedal shaft.

In the invention of claim 4, the stopper body is mounted on the pedal body so as to be movable in a direction orthogonal to the pedal shaft. As for the mode, the one side of the pedal shaft is flat and the other side is curved, the stopper hole of the stopper body has a larger diameter than the pedal shaft, and the center thereof is positioned eccentric to the axis of the pedal shaft.
The operation member is rotatably mounted on an attachment shaft provided in parallel with the pedal shaft on one side and the other side of the pedal shaft. The operating member mounted on one mounting shaft pushes the stopper body toward the pedal axis in a state where the stepping body protrudes from the tread surface so that the inner wall of the stopper hole contacts the pedal shaft, and the stepping body is depressed. The operating member mounted on the other mounting shaft has a cam surface that protrudes from the tread surface, having a cam surface that has a cam function that releases the push-out of the stopper body in a state where rotational force is applied to the operating member. A cam function that pushes the stopper body in the direction of the other operation member in a state in which the stopper body pushed in the pedal axial direction by the other operation member is received and a rotational force is applied to the operation member Has a cam surface.
With this configuration, the inner wall of the stopper hole of the stopper body is in contact with the pedal shaft in a state where the stepping body protrudes from the pedal tread surface, and the stepping body of the operating member is stepped on and rotational force is applied to the operating member. The inner wall of the stopper hole of the stopper body and the pedal shaft are not in contact with each other.

In this invention, when the foot is not put on the tread (hereinafter referred to as “normal state”), the stepping body protrudes from the tread, and in this state, the inner wall of the stopper hole of the stopper body is in contact with the pedal shaft. The friction between the pedal shaft and the pedal body is large, and the rotation of the pedal shaft is suppressed. Note that it is only necessary to suppress the rotation of the pedal shaft, and it is not necessary to stop the rotation.
On the other hand, in the pedaling running state with feet on the tread, the stopper hole of the stopper body and the pedal shaft do not contact each other, and the pedal body rotates smoothly.
Since the increase / decrease of the friction is automatically performed by releasing or stepping on the foot, there is no need for the bicycle operator to be aware of it. Therefore, the pedal is suitable for traveling on a mountain bike or the like that repeats the operation of stepping on the tread or releasing the foot from the tread.

The perspective view of this invention Example 1 Same side view Similarly exploded perspective view of the main part A perspective view of the main part Cross-sectional view of the main part in the normal state Similarly, a cross-sectional view of the main part in the state where it is depressed Sectional drawing which similarly shows another aspect of a stepping body Sectional drawing which shows the further another aspect of a treading body similarly Similarly, a perspective view of a pedal incorporating the stepping body of FIG. The perspective view of this invention Example 2 Similarly exploded perspective view of the main part A perspective view of the main part The front view of the cam part The explanation perspective view of the principal part in normal state The explanation perspective view of the state where also stepped on the body The perspective view of this invention Example 3 Similarly exploded perspective view of the main part A perspective view of the main part Side view of the main part in the normal state Side view of the main part in the state where the pedal is also depressed

Preferred form for carrying out the invention

  Examples of the present invention will be described below.

Two stopper bodies 2, 2 are mounted side by side on the pedal shaft 1 of the bicycle pedal A. These stopper bodies 2 are cylindrical, and the insertion hole 2a to the pedal shaft 1 is provided in a position that is decentered in the horizontal direction from the central axis of the stopper body 2 with a circular cross section. As a result, the axis of the pedal shaft 1 and the center of the stopper hole 2a are eccentric. A square flange 2b is provided at one end of the stopper ring, and the lower surface of the flange 2b comes into contact with the receiving surface 3a of the cradle 3 fixed to the pedal body so that the stopper body 2 does not rotate. It is. The stopper body 2 is made of an elastic synthetic resin.

Each of the stopper bodies 2 is provided with an operation member 4 for bringing the inner wall of the insertion hole 2a of the stopper body 2 into and out of contact with the pedal shaft 1, and is closely fitted and integrated so as not to rotate freely.
Each operation member 4 is provided with two flaps 5 as a stepping body symmetrically in diameter. The flap 5 normally protrudes from the tread surface of the pedal A, and when the flap 5 is depressed, a rotational force is applied to the operation member 4. This rotational force is conducted to the stopper body 2.
Here, the flaps 5 of the two operating members 4 are in opposite directions. Therefore, when the flap 5 is stepped on, the two operation members 5 rotate in the opposite directions, and the two stopper bodies 2 are also given the opposite rotational force.

The relative positional relationship between the pedal shaft 1, the stopper body 2, and the operation member 4 is as follows. In a state where the flap 5 protrudes (normal state), the inner wall of the insertion hole 2 a of the stopper body 2 is in contact with the pedal shaft 1. In a state where the flap 5 is pushed down, the rotational force applied to the operation member 4 is transmitted to the stopper body 2 and the stopper body 2 made of elastic synthetic resin is twisted. By twisting, the inner wall of the insertion hole a of the stopper body 2 moves away from the pedal shaft 1, and the contact between the inner wall of the stopper ring 2 and the pedal shaft 1 is released, so that a gap is created between them.
As described above, the two stopper bodies 2 are imparted with a reverse rotational force and twisted in the opposite direction, so that the stopper hole 2a of one stopper body 2 is separated from and in contact with the front surface of the pedal shaft 1, and the other The stopper hole 2 a of the stopper body 2 is in contact with the rear surface of the pedal shaft 1. For this reason, in a normal state, the stopper holes are in contact with both the front and rear surfaces of the pedal shaft, and a strong braking force is obtained. In addition, even if only one set of the stopper body and the operation member is used, a constant braking force can be obtained, and the problem of the present invention can be solved.

  With the above configuration, when the rider repeats running with the pedal depressed and running with the foot off the pedal, the flap 5 is pushed down when the pedal is depressed, so the stopper of the stopper body 2 There is a gap between the inner wall of the hole 2a and the pedal shaft 1, and smooth pedal rotation can be obtained in the same manner as a normal pedal. On the other hand, when the foot is released from the pedal, the rotational force applied to the stopper body 2 and the operation member 4 is eliminated. Accordingly, the stopper body 2 generates a rotational force that eliminates the twist and returns to the original state. The rotational member returns the operating member 4 to the normal state, and the inner wall of the stopper hole 2a of the stopper body 2 contacts the pedal shaft 1. To do. Therefore, the rotation of the pedal is suppressed.

7 to 9 show another embodiment of the stepping body.
FIG. 7 shows a case where the flap 5 is thick, and FIG. 8 shows a case where the flat plate 6 protrudes horizontally and a protrusion 6a protruding from the tread surface is provided at the end. In both drawings, the broken line indicates the tread position. In each figure, (A) shows a normal state, and (B) shows a depressed state. FIG. 9 is a perspective view of a pedal equipped with the stepping body shown in FIG.

  A stopper body 11 having an inner wall-shaped stopper hole 11a corresponding to a tapered portion 1a formed on the distal end side of the pedal shaft 1 is inserted into the pedal shaft of the pedal shaft 1 of the bicycle pedal A. The hole 11a is mounted so as to be movable in the pedal axis direction. The outer shape of the stopper body 11 is square, and the lower surface is in contact with a receiving surface of a cradle (not shown) fixed to the pedal body so that the stopper body 11 does not rotate.

  An operation member 12 is mounted on the base side of the pedal shaft 1 with respect to the stopper body 11. The operation member 12 can rotate with respect to the pedal shaft 1 and cannot move in the axial direction. The operating member 12 is provided with two flaps 13 as stepping bodies symmetrically in diameter. The flap 13 normally protrudes from the tread surface of the pedal A, and when the flap 13 is depressed, a rotational force is applied to the operation member 12.

The operating member 12 and the stopper body 11 are joined by a cam mechanism that converts the rotational motion of the operating member 12 into a reciprocating motion of the stopper body 11 and conducts it. That is, the cam groove 12a is formed on the end surface of the operation member 12, and the protrusion 11b that fits into the cam groove 12a is formed on the end surface of the stopper body 11.
The relative relationship between the cam groove 12a and the projection 11b is that when the operation member 12 is in a normal state, the stopper body 11 is close to the operation member 12, and the stopper 11 is separated from the operation member 12 in a state where the operation member 12 is rotated. It is designed to be located on the tip side of the shaft 1.
Reference numeral 14 in the figure denotes a spring that biases the stopper body toward the operation member 12.

  The relative positional relationship among the tapered portion 1a of the pedal shaft 1, the stopper body 11, and the operation member 12 is as follows. In a state where the flap 13 protrudes (normal state), the inner wall of the stopper hole 11 a of the stopper body 11 is in contact with the tapered portion 1 a of the pedal shaft 1. In a state where the flap 13 is pushed down, the operating member 12 is rotated by the rotational force applied to the operating member 12, and the stopper body 11 is moved to the tip end side of the pedal shaft 1 by the cam mechanism. By this movement, the contact between the inner wall of the stopper hole 11a of the stopper body 11 and the pedal shaft 1 is released, and a gap is formed between them.

  With the above configuration, when the rider repeats running with the pedal depressed and running with the foot off the pedal, the flap 13 is pushed down and the operating member 12 is rotated when the pedal is depressed. The stopper body 11 is located on the distal end side of the pedal shaft 1. Therefore, there is a gap between the inner wall of the stopper hole 11a of the stopper body 11 and the pedal shaft 1, and smooth pedal rotation can be obtained in the same manner as a normal pedal. On the other hand, when the foot is released from the pedal, the rotational force applied to the operation member 12 is eliminated. Accordingly, the stopper body 11 is retracted to a deep portion of the cam groove 12a of the operation member 12 by the spring 14. As a result, the inner wall of the stopper hole 11a of the stopper body 11 comes into contact with the pedal shaft 1, and the rotation of the pedal body is suppressed.

Two stopper bodies 21 are mounted side by side on the pedal shaft 1. One side surface of the stopper body 21 is a vertical surface 21a, and the other side surface is a curved surface 21b. The stopper hole 21c of the stopper body 21 has a diameter larger than that of the pedal shaft 1, and its center is normally left and right with respect to the axis of the pedal shaft 1. It is an eccentric position. The two stopper bodies 21 are mounted so that the directions of the plane and the curved surface are reversed.
The operation member 22 is rotatably mounted on attachment shafts 23 and 23a provided in parallel with the pedal shaft on both front and rear sides of the pedal shaft 1, respectively. The operation member 22 has a cam surface 24 in contact with the curved surface 21b of the stopper body 21 and a cam surface 25 in contact with the vertical surface 21b of the stopper body 21 in the pedal axis direction. Is provided. The positions of the cam surface 24 and the cam surface 25 of the operation member 22 attached to the attachment shaft 23 and the operation member 22 attached to the attachment shaft 23a are opposite.

The cam surface 24 is a curved surface that normally pushes the stopper body 21 in the pedal axial direction and releases the force pushing the stopper body when the flap is pushed down. In addition, the cam surface 25 normally has a flat surface 25a that abuts on the vertical surface 21a of the stopper body 21 pushed out by the cam surface 22a, and pushes the stopper body 21 in the pedal axial direction when the flap is pushed down. A flat surface 25 b that comes into contact with the vertical surface 21 a of the body 21 is provided.
Reference numeral 27 in the figure denotes a spring for returning the operating member to a normal state.

The relative positional relationship between the stopper body 21 and the operation member 22 is as follows. In the state where the flap 26 protrudes (normal state), the stopper body 21 is pushed out to the pedal shaft side by the cam surface 24, and the inner wall of the stopper hole 21 a is in contact with the pedal shaft 1. In this embodiment, since two stopper bodies are provided, the pedal shaft 1 is pressed from both sides.
In a state where the flap 26 is pushed down, the operating member 22 is rotated by the rotational force applied to the operating member 22, and the stopper body 21 is moved away from the pedal shaft by the cam surface 25. By this movement, the contact between the inner wall of the stopper hole 21a of the stopper body 21 and the pedal shaft 1 is released, and a gap is formed between them.

  With the above configuration, when the rider repeats running with the pedal depressed and running with the foot off the pedal, the flap 26 is pushed down and the operating member 22 is rotated when the pedal is depressed. There is a gap between the inner wall of the stopper hole 21a and the pedal shaft 1, and smooth pedal rotation can be obtained in the same manner as a normal pedal. On the other hand, when the foot is released from the pedal, the operation member 22 returns to the original position by the action of the spring 27. As a result, the inner wall of the stopper hole 21a of the stopper body 21 comes into contact with the pedal shaft 1, and the rotation of the pedal body is suppressed.

  In this embodiment, two stopper bodies are mounted and each operation member is provided with cam surfaces 24 and 25. However, one stopper body is provided, and only one cam member 24 is provided on one operation member. Only the cam surface 25 may be provided on the other operation member facing this.

  The present invention is suitable for traveling on a mountain bike or the like, and has industrial applicability.

A bicycle pedal 1 pedal shaft 2 stopper body 2a stopper hole 3 cradle 4 operation member 5 flap 11 stopper body 11a insertion hole 12 operation member 12a cam groove 13 flap 21 stopper body 21c stopper hole 22 operation member 24 cam surface 25 cam surface

Claims (4)

In the pedal for a bicycle, provided with a stopper body having a stopper hole inserted through the pedal shaft, and an operation member for bringing the inner wall of the stopper hole of the stopper body into and out of contact with the pedal shaft,
The stopper body is mounted on the pedal body so as not to rotate,
The operating member includes a mounting hole, and the mounting hole is rotatably mounted on a pedal shaft or an axis parallel to the pedal shaft.
A stepping body for applying a rotational force to the operation member by stepping on the operation member is provided so as to protrude from the pedal tread surface,
The operating member and the stopper body are joined so that the rotational force of the operating member can be conducted to the stopper body,
When the stepping body protrudes from the pedal tread surface, the inner wall of the stopper hole of the stopper body contacts the pedal shaft, and when the stepping body is stepped on and rotational force is applied to the operation member, the stopper of the stopper body The inner wall of the hole was not in contact with the pedal shaft.
Bicycle pedal. The stopper hole of the stopper body has a diameter larger than that of the pedal shaft, and the center of the stopper hole is decentered from the axis of the pedal shaft.
The stopper body is an elastic synthetic resin,
The mounting hole of the operation member is closely fitted to the stopper body,
The stopper body in a state where the inner wall of the stopper hole of the stopper body is in contact with the pedal shaft in a state where the stepping body protrudes from the pedal tread surface and the stepping body of the operating member is stepped on and rotational force is applied to the operating member. The bicycle pedal according to claim 1, wherein the inner wall of the stopper hole of the stopper body and the pedal shaft are not brought into contact with each other by twisting. The inner wall of the stopper hole of the stopper body has a shape corresponding to the taper portion of the pedal shaft, and is mounted on the pedal shaft so as to be movable in the axial direction.
The operating member is mounted on the pedal shaft so as to be rotatable and immovable in the axial direction.
The operating member and the stopper body are joined by a cam mechanism that converts the rotational motion of the operating member into the reciprocating motion of the stopper body in the pedal axis direction,
The stopper body in a state where the inner wall of the stopper hole of the stopper body is in contact with the pedal shaft in a state where the stepping body protrudes from the pedal tread surface and the stepping body of the operating member is stepped on and rotational force is applied to the operating member. The bicycle pedal according to claim 1, wherein the inner wall of the stopper insertion shaft of the stopper body and the pedal shaft are not brought into contact with each other by moving along the pedal shaft. The stopper body
It is mounted on the pedal body so that it can move in the direction perpendicular to the pedal axis.
One side is flat, the other side is curved,
The stopper hole of the stopper body has a diameter larger than that of the pedal shaft, and the center of the stopper hole is decentered from the axis of the pedal shaft.
The operation member is
It is rotatably mounted on the mounting shaft provided in parallel with the pedal shaft on both the front and rear sides of the pedal shaft,
The operating member mounted on one of the mounting shafts pushes the stopper body in the pedal axis direction in a state where the stepping body protrudes from the tread surface so that the inner wall of the stopper hole contacts the pedal shaft, and the stepping body is stepped on to operate the operating member. A cam surface having a cam function for releasing the stopper body in a state where a rotational force is applied to the stopper body,
The operating member mounted on the other mounting shaft receives the stopper body pushed out in the pedal axis direction by the other operating member in a state where the stepping body protrudes from the tread surface. A cam surface having a cam function to push the stopper body toward the other operation member in the applied state;
The inner wall of the stopper hole of the stopper body is in contact with the pedal shaft in a state where the stepping body protrudes from the pedal tread surface, and the stopper member is pressed in the state where the stepping body of the operating member is stepped on and rotational force is applied to the operating member. The bicycle pedal according to claim 1, wherein the inner wall of the stopper hole and the pedal shaft are not in contact with each other.