JPH11208564A - Connecting structure of crank pedal shaft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow anyone to simply fit or remove a pedal to or from a crank by using a pedal fixing tool and a release stop hook tool. SOLUTION: A crank 1 is inserted into the storage section (a) of a pedal fixing tool 5, and a pedal receiver 4 is screwed to the female screw 7 of the shaft hole 8 of the crank 1 to fix them. The shaft 3 of a pedal 2 is inserted into the pedal receiver 4 until the tip of the pedal shaft 3 reaches a storage section (b). A release stop hook tool 6 is inserted into the storage section (b), the curled hook ring 14 of the release stop hook tool 6 is coupled with a circular peripheral groove 9 formed at the tip of the pedal shaft 3, and it is further thrust to couple the tip pawls 16 of suspension sections 15 with pawl reception sections 17. When the pedal 2 is to be removed from the crank 1, the suspension sections 15 are pushed from the right and left by utilizing the holes 18 provided above the pawl reception sections 17, the coupling between the pawls 16 and the pawl reception sections 17 is released, then the release stop hook tool 6 may be extracted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel coupling structure between a bicycle pedal and a crank.

[0002]

2. Description of the Related Art In recent years, bicycles are often sold through non-specialty stores, and bicycles are assembled by persons with little technical knowledge of bicycles. Have been. In particular, bicycle pedals protrude in the width direction, and therefore are often assembled for the first time at the time of sale at a store, and an assembly structure of the pedal and the crank is desired to have a simple structure that is easy to work.

In assembling the pedal and the crank,
A structure is adopted in which the distal end of the pedal shaft is made to correspond to the shaft hole of the crank, and both are screwed by a female screw provided in the shaft hole of the crank and a male screw provided in the distal end of the pedal shaft. Then, since the pedal is depressed forward, in the direction in which the tightening screw is tightened by the depression, that is, a left screw is provided in the right pedal shaft and crank shaft hole, and a right screw is provided in the left pedal shaft and crank shaft hole. Is cut.

However, it is not easy to assemble the pedal to the crank, and as described above, the screws engraved on the pedal shaft are formed by the left and right pedals in reverse. It is necessary to screw each pedal to the crank above, and when screwing the left and right pedals to the crank, these pedal shafts are rotated according to the screw directions formed respectively, and a predetermined force is applied. , And preferably requires a special tool.

[0005]

That is, since the assembling work of the left and right pedals is not standardized in the conventional structure, especially when a person having little technical knowledge performs the assembling work, the work is not performed. Is troublesome. SUMMARY OF THE INVENTION The present invention provides a structure for connecting a pedal shaft to a bicycle crank, which can be easily and quickly assembled by an unskilled person.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and the gist of the invention is to provide a structure in which a pedal shaft is connected to a bicycle crank. A pedal shaft provided with: a shaft hole in which a female screw for inserting the distal end portion of the pedal shaft is formed in the crank; a pedal receiving member screwed to the female screw; And a storage part b for receiving a locking member for retaining, and a pedal fixing tool having a through hole formed through the storage part a and the storage part b and into which the pedal receiver is inserted, and The locking device has a curl-shaped locking ring in the center and locking hooks hanging right and left across the locking ring, and the accommodating portion b has claw receiving portions on the left and right sides. Insert the tip of the crank into the storage part a of the pedal fixture, and insert it into the shaft hole. Screwed Dar female component to secure the pedal fixture cranks, insert the pedal shaft the pedal bracket as,
Next, a locking device for retaining is inserted into the storage portion b, and a curl-shaped locking ring is fitted into an annular circumferential groove formed at the tip of the pedal shaft, and a claw receiving portion formed with a locking claw in the storage portion b. The present invention relates to a connection structure between a crank and a pedal shaft, which is fitted into a part.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is as described above. The conventional crank and pedal can be connected as they are. This eliminates the inconvenience that the coupling structure differs between the left and right pedals as in the related art.

The locking of the crank and the pedal shaft by the pedal fixing device and the retaining locking device is extremely simple.
The curl-shaped locking ring naturally fits in the annular peripheral groove of the pedal shaft only by storing the locking stopper in the storage portion b with respect to the pedal shaft inserted into the pedal fixing device, Here, the pedal shaft is prevented from coming off.

At the same time, the engagement between the pedal fixing device and the locking stopper is locked by the claw and the claw receiving portion engaging with the claw. The locking can be easily released by elastically deforming the portion. In the embodiment to be described later, an example in which the hanging portion is released from the outside by pressing the hanging portion from the outside is shown. However, the present invention is not limited to this. You can also stop it.

That is, the pedal shaft is locked only by inserting the retaining lock into the storage portion b of the pedal fixing device, and the engagement can be easily released by bending the pawl of the retaining lock inward. That allows you to attach pedals,
The removal was extremely easy, and even an amateur could work without the need for special tools.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a structure for connecting a bicycle crank and a pedal shaft according to the present invention. FIG.
FIG. 2 is a perspective view showing a connection structure between a crank and a pedal shaft according to the present invention, and FIG. 2 is an exploded view thereof. In the figure, reference numeral 1 denotes a crank, 2 denotes a pedal, and 3 denotes a pedal shaft. Reference numeral 4 denotes a pedal receiver, reference numeral 5 denotes a pedal fixing device, and reference numeral 6 denotes a locking stopper. Now, a shaft hole 8 in which a female screw 7 is cut is formed at the tip of the crank 1. On the other hand, the pedal shaft 3 is provided with an annular peripheral groove 9 at its tip. The pedal receiver 4 includes a flange portion 10 and a male screw portion 11. In this example, a rotation groove 12 is formed in the flange portion 10. Are combined.

The pedal fixing device 5 has a storage portion a for accommodating the crank 1 and a storage portion b for accommodating a retaining / locking device 6 to be described later, in which a through hole 13 for inserting the pedal shaft 3 is formed. I have. On the other hand, the retaining locking device 6 has a curl-shaped locking ring 14 in the center, hanging portions 15 on the left and right sides thereof, and claws 16 on the outside of the tip. The hanging parts 15 have elasticity, and the nails 16 are locked and released by the elasticity.

As described above, the pedal fixing device 5 is provided with a storage portion b for accommodating the retaining locking device 6.
The nail receiving portions corresponding to the claws 16, 16 of the above-mentioned retaining locking device 6, holes 17, 17 in this example are formed on the left and right, and a hanging portion 15 is provided above the nail receiving portions 17, 17. , 15
Holes 18 are formed to press the outer surface of the body from outside. That is, when the hanging portions 15, 15 are pushed inward from the holes 18, the engagement between the claw 16 and the claw receiving portion 17 is released. In the figure, a step 19 at the top of the storage portion b is a portion for accommodating the flange 20 at the top of the locking device 6 for retaining.

Here, the details of the connection structure in the connection structure of the present invention will be described. First, the crank 1 is inserted into the accommodating portion a of the pedal fixing device 5, and the pedal receiving member 4 is fixed to the shaft of the clamp 1 in order to fix both. The female screw 7 of the hole 8 is screwed. Next, the shaft 3 of the pedal 2 is attached to the pedal support 4 by the pedal shaft 3.
Is inserted to reach the storage section b. Here, the locking stopper 6 is inserted into the storage portion b, and the pedal shaft 3
The annular peripheral groove 9 formed at the tip of the hook and the curl-shaped locking ring 14 of the retaining lock 6 are fitted together, and further pushed in, whereby the claw 16 at the tip of the hanging portion 15 and the claw receiving portion 17 are pressed.
Are fitted. As described above, according to the coupling structure of the crank and the pedal shaft of the present invention, both can be coupled with each other easily, and even a layman can easily perform the coupling operation.

On the other hand, the pedal 2 is detached from the crank 1 by using the holes 18 provided above the claw receiving portion 17 and pressing the hanging portions 15 from the left and right.
The locking between the hook 6 and the claw receiving portion 17 is easily released, and then the locking stopper 6 may be pulled out.

[0016]

According to the present invention, the attachment of the crank to the pedal is very easy for anyone to use and can be removed by using the pedal fixing device and the retaining locking device. Is extremely large. Since there is no need to specially process a conventional crank or pedal shaft at the time of connecting the two, it can be used as it is, and the cost is low.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a coupling structure between a crank and a pedal shaft according to the present invention.

FIG. 2 is an exploded view of the coupling structure of FIG.

[Explanation of symbols]

 1 ‥‥ crank, 2 ‥‥ pedal, 3 ‥‥ pedal axle, 4 受 pedal receiver, 5 固定 pedal fixing tool, 6 ‥‥ locking stopper, 7 ‥‥ female screw carved in shaft hole 8) Crank hole at the tip of crank, 9) Circular groove at the tip of pedal shaft, 10) Flange part of pedal receiver, 11) Male thread part of pedal receiver, 12) Turn of pedal receiver Groove for movement, 13 ‥‥ through-hole for inserting the pedal shaft of the pedal fixing device, 14 カ curl-shaped locking ring provided for the locking device, 15 ‥‥ hanging part provided on the left and right of the locking device 16 ‥‥ Hanging part at the tip of the lower part, 17 ‥‥ Claw receiving part, 18 ‥‥ Hole for pressing the lower part, 19 ‥‥ Step to accommodate locking stopper, a ‥‥ Crank storage provided on the pedal fixture B, a locking stopper storage portion provided on the pedal fixing device.

Claims (1)

[Claims] 1. A structure in which a pedal axle is coupled to a bicycle crank, the pedal axle having an annular peripheral groove at a tip end;
A shaft hole in which a female screw for inserting the tip of the pedal shaft is inserted is formed in the crank, a pedal receiving member is screwed to the female screw, a storage portion a for receiving the tip of the crank, and a retaining lock. And a pedal fixing device having a through-hole through which the pedal receiving member is inserted through the storage portion a and the storage portion b. A claw-shaped locking ring, and locking claws hanging right and left with the locking ring interposed therebetween. The accommodating portion b has claw receiving portions formed on the left and right sides thereof. Into the accommodating portion a of the pedal fixing device, screw the pedal receiving device into the shaft hole to fix the pedal fixing device to the crank, insert the pedal shaft into the pedal receiving device, and then store the locking stopper. A curl-shaped locking ring is fitted into an annular peripheral groove formed at the tip of the pedal shaft by inserting it into the portion b. Both coupling structure of the crank and the pedal shaft comprising fitted into claw receiving portion forming the locking claw in the housing portion b.