HK1135071B - Installation device of footboard for bicycle - Google Patents

Description

Mounting device for bicycle pedal

Technical Field

The present invention relates to a pedal attachment device for a bicycle.

Background

A bicycle pedal of a known art is fixed by screwing a pedal shaft and a pedal crank (pedal crank) to each other by providing a screw thread.

This configuration does not allow for the installation of the foot pedal by personnel without bicycle service skills. However, in recent years, although the sales channels of bicycles have been shifted to mass stores and the like other than the bicycle exclusive stores, such technicians are not required for the mass stores. Further, even if a mail-order (or online-order) system is adopted, it is desired that a general consumer who does not have this technology can carry out shipment with the foot board removed (disassembled) and can install the foot board by himself.

In addition, for a bicycle player, the pedals are sometimes exchanged according to the use conditions. However, since the known foot pedal requires a tool and time to attach and detach, a foot pedal that can be easily attached and detached is desired.

In order to solve the above problems, the applicant has proposed a mounting device of a foot board that does not require a tool (japanese patent laid-open No. 2000-289680).

The invention has the following structure:

the retainer is composed of a threaded collar having the same inner diameter as the outer shape of the pedal shaft, a locking body fitted in a through hole formed in the threaded collar, and a stopper collar slidably fitted to the outside of the threaded collar. The stopper collar has an annular stopper protrusion which presses the locking body in a direction of a central axis of the threaded collar to hold the locking body in a state locked in the locking recess of the pedal shaft, and a spring is disposed between the threaded collar and the stopper collar, the spring applying a biasing force to the stopper collar in a direction of the crankshaft, and the locking of the locking body and the locking recess is released by sliding the stopper collar in a direction of the pedal plate.

Patent document 1: japanese laid-open patent publication No. 2000-289680

In the above invention, although the stopper collar (stopper collar) is biased toward the crank side by the spring, in this state, the stopper collar is held in the state of being locked to the pedal shaft, but since the restriction of the movement of the stopper collar toward the pedal side is only dependent on the spring, there is a possibility that the stopper collar moves toward the pedal side when an unexpected force that is not considered is generated, and as a result, the pedal may come off.

Disclosure of Invention

The present invention is directed to provide a footrest mounting apparatus that is basically the same as the above-described conventional structure, but can solve the problem of the footrest falling due to an unaccounted for force.

The pedal plate mounting device of the present invention is configured by combining a receiving member mounted on a pedal plate shaft mounting hole of a pedal plate crank and a pedal plate shaft having a locking recess for locking a locking body provided on an outer periphery thereof.

The receiving member is composed of a threaded collar having an inner diameter equal to the outer shape of the pedal shaft, a locking body fitted in a through hole formed in the threaded collar, and a stopper collar slidably fitted to the outside of the threaded collar.

The stopper collar has a stopper protrusion portion that presses the locking body in a direction of a central axis of the screw collar and holds the locking body in a state of being locked in the locking recess portion of the pedal shaft, and a spring is disposed between the screw collar and the stopper collar. The spring is disposed so as to urge the threaded collar and the stopper collar in a direction to separate from each other or in a direction to attract each other, and to impart a rotational urging force therebetween.

The pedal plate mounting device for a bicycle is configured by providing a protrusion on the outside of the threaded collar, providing a groove in the axial direction for the protrusion to move on the peripheral wall of the stopper collar, aligning the groove and the protrusion with each other by rotating the stopper collar, and releasing the engagement between the engagement body and the engagement recess by sliding the stopper collar.

The locking body is preferably a spherical body (second aspect).

The locking body is preferably a ball, but any form may be adopted as long as it can be inserted into and removed from a through hole formed in the threaded collar and can be locked in a locking recess of the pedal shaft. The number of the through holes or the locking bodies is preferably plural, and particularly, when the locking bodies are spherical bodies, the number is preferably 4 or more, but the number is not limited.

Further, the axial groove formed in the stopper collar may be formed not in a slit shape but in a groove through which the protrusion of the threaded collar can pass, inside the peripheral wall of the stopper collar.

The rotation angle of the threaded collar and the stopper collar by the spring is preferably about 90 degrees, but is not limited thereto.

Further, the urging force direction of the axial direction of the spring includes: the embodiment shows the manner in which the force is applied in a distal direction to the threaded collar and the retainer collar; and a method of applying a force to both in a pulling (attracting) direction. In the latter case, the locking body is held in a state in which the locking body is locked in the locking groove of the pedal shaft in a state in which the stopper collar is pulled toward the threaded collar side, and the locking of the locking body can be released by pulling the stopper collar toward the pedal plate side when the pedal plate is attached and detached.

The pedal plate mounting device of the present invention is used in a state that the receiving member is mounted in the threaded hole of the crank shaft. That is, when a bicycle is shipped from a bicycle shop or the like, the socket is first attached to the crank shaft, and in a sales shop or the like, the pedal is attached in a state where the socket is attached to the crank shaft in advance.

The retainer collar of the adapter is rotated to align its groove with the protrusion of the threaded collar, and the retainer collar is then slid. In this case, since the locking body is released from the concave portion of the stopper projection, the pedal shaft can be inserted into the receiver without interfering with the locking body. When the hand is removed from the stopper collar, the stopper collar is moved toward the pedal plate side by the biasing force of the spring, and the stopper protrusion presses the stopper body toward the stopper recess of the pedal shaft, thereby fixing the pedal plate.

Therefore, no tool is required, and the foot pedal can be fixed by the same condition regardless of having a technique. Further, the pedal plate can be removed by sliding the stopper collar to release the locking of the locking body. Therefore, the mounting device is configured to be mounted without requiring any technique and to be capable of easily attaching and detaching the footrest.

Further, the stopper collar is held in the locked state by the spring, and the stopper collar does not move unless the stopper collar is rotated against the spring, so that the pedal plate can be prevented from falling off during the operation of the bicycle even with a relatively simple structure.

Drawings

Fig. 1 is an exploded perspective view of an embodiment of the present invention.

Fig. 2 is a perspective view of the same fixing.

Fig. 3 is a perspective view of the same socket.

Fig. 4 is a partial sectional view of the same retainer in the locked state.

Fig. 5 is a partial sectional view of the same retainer in the unlocked state.

Description of the symbols

A: a foot pedal; 1: a pedal shaft; 2: a locking concave part; 3: a crank; 4: a receiving member; 5: a threaded collar; 6: a locking body; 7: through holes; 8: a retainer collar; 9: a stopper protrusion; 10: a large diameter portion; 11: a protrusion; 12: a groove; 13: spring (spring)

Detailed Description

As shown in fig. 1 to 6, a locking recess 2 is formed in a ring shape on a step shaft 1 of a step a, and the step a is fixed to a step crank 3 by detachably locking the locking recess 2 to a receiver 4 fixed to the step crank 3.

The specific structure of the locking member is as follows.

A mounting hole for mounting a pedal shaft is provided at the distal end portion of the pedal crank 3, a screw groove is provided on the inner wall of the mounting hole, and the screw collar 5 is mounted by screwing the screw groove into a screw groove 5a provided on the outer wall of the base portion of the screw collar 5 as a cylindrical body.

On the peripheral wall of the threaded collar 5, 4 through holes 7 for attaching the locking bodies 6 are formed at equal intervals on the same circumference, and the locking bodies 6 as balls are attached to the through holes 7, respectively.

A stopper collar 8 is attached to the outside of the threaded collar 5. On the pedal plate side of the stopper collar 8, a small-diameter stopper protrusion 9 is annularly formed to press the stopper body 6 toward the locking recess 2 of the pedal shaft 1, and the pedal plate side of the stopper protrusion 9 is a large-diameter portion 10 for releasing the stopper body 6 from the locking recess 2.

The size of the large diameter portion 10 is such that the locking body 6 does not fall out of the through hole 7 of the threaded collar 5 when the stopper collar is slid toward the crank side.

The receiving tool 4 is composed of the threaded collar 5, the locking body 6, and the stopper collar 8.

A projection 11 is provided on the screw groove side of the screw collar 5, and a groove 12 in which the projection 11 is movable in the axial direction is provided on the crank-side peripheral wall of the stopper collar 8 so that the stopper collar 8 can be moved in the crank direction.

A coil spring (coil spring)13 is disposed between the threaded collar 5 and the stopper collar 8. The above-described threaded collar 5 and the stopper collar 8 are urged toward each other in the direction of separation by this spring 13, and a rotational force (90 degrees) is applied therebetween. Then, the stopper collar 8 is normally pressed down by the force of the spring so that the stopper protrusion 9 is positioned at a position corresponding to the locking body 6, the locking body 6 is locked in the locking recess 2 of the step shaft, and the protrusion 11 of the screw collar 5 is locked to the crank side end edge of the stopper collar 8.

The stopper collar 8 is rotated by 90 degrees so that the groove 12 formed in the peripheral wall of the stopper collar 8 is aligned with the position of the stopper pin 11, and the stopper collar 8 is pushed in the crank direction, whereby the stopper collar 8 is moved in the axial direction, the stopper protrusion 9 is moved from the position corresponding to the locking body, and the depression of the locking body 5 is released.

Hereinafter, a method of using the mounting device of the present embodiment will be described.

When the stopper collar 8 is rotated against the spring 13 to match (align) the position of the projection 11 with the groove 12 and then pushed toward the crank side when the foot pedal a is attached, the stopper stepped portion 9 of the stopper collar 8 moves toward the crank side and the stopper stepped portion 9 releases the pressing of the stopper stepped portion 9 against the locking body 5. In this state, when the foot pedal shaft 1 is inserted into the screw collar 5 and then the hand is released from the stopper collar 8 and returned to the original position by the force of the spring 13, the locking body 5 is pressed by the stopper protrusion 9 and locked in the locking recess 2 of the foot pedal shaft.

When the foot pedal a is removed, the foot pedal shaft 1 may be removed after the stopper collar 8 is pushed in and the locking body 5 is released from being pushed in, as described above.

In the above description, the engaged state cannot be released unless the pedal is rotated or pushed into the retainer collar 8 in two stages. I.e. both axial and rotational forces are required. Further, since it is difficult to assume that the forces in both directions are generated simultaneously by accident, the pedal attached to the device is less likely to fall off by an unconscious force (unexpected force) during use.

Industrial applicability

According to the present invention, since the spring installed between the threaded collar and the stopper collar has both the axial force and the rotational force therebetween, the both forces need to be applied simultaneously when the pedal is removed. Therefore, the pedal attachment device can be provided that can solve the risk of the pedal falling due to unexpected force, and can be easily and safely attached and detached, and is industrially applicable.

Claims (2)

1. A mounting device for a bicycle pedal, characterized in that:

the mounting device is composed of a bearing piece mounted on a pedal shaft mounting hole of a pedal crank and a pedal shaft provided with a stop concave part for stopping a stop body on the outer periphery,

the receiving member is composed of a threaded collar having an inner diameter equal to the outer shape of the pedal shaft, a locking body fitted in a through hole formed in the threaded collar, and a stopper collar slidably fitted to the outside of the threaded collar,

the retainer collar has a retainer protrusion that presses the locking body in a direction of a central axis of the threaded collar and holds the locking body in a state locked in the locking recess of the pedal shaft,

a spring is provided between the threaded collar and the retainer collar,

the spring is arranged to apply a force in a direction to move the threaded collar and the stopper collar away from each other or in a direction to attract each other, and to impart a force in a rotational direction therebetween,

a protrusion is provided on the outside of the threaded collar, a groove in the axial direction for moving the protrusion is provided on the peripheral wall of the retainer collar,

sliding the stopper collar by rotating the stopper collar so that the positions of the groove and the projection are aligned with each other, thereby releasing the engagement of the engagement body with the engagement recess,

when the installed pedal is removed, it is necessary to apply a force in the axial direction of the pedal shaft and a force in the rotational direction.

2. The mounting device for a bicycle pedal according to claim 1, wherein:

the clamping body is a sphere.