JPS5855107Y2 - bicycle pedals - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a bicycle pedal, and more particularly to a bicycle pedal in which a pedal body with a tread surface is supported in a cantilevered manner on a pedal shaft screwed onto the crank of the bicycle.

As bicycle pedals, the pedal body is supported in a cantilevered manner on a pedal shaft that is screwed onto the crank, and the tread surface of the body is always directed upward, so that the pedal can be depressed when riding a bicycle. There are things that make it easier to do.

Conventionally, this type of pedal has been designed by inserting the offset shaft portion of the pedal body into the pedal shaft that is screwed onto the crank, and forming annular grooves at two opposing surfaces of the pedal shaft and the body shaft portion, respectively. Rolling elements are held in a row in the annular groove, and the two rows of rolling elements are used to support the body rotatably around the pedal shaft.

Therefore, according to this pedal, the outer diameter of the pedal shaft is large due to the provision of rolling elements within the pedal shaft, so it cannot be installed on a general rank, and a special crank is required. be.

Moreover, since the pedal body is supported by two rows of rolling elements, the pedal has the disadvantage that the structure is complicated, the assembly work is troublesome, and the pedal is expensive.
In addition, the part of the pedal body that attaches to the crank may bulge outward, causing the part to hit your foot.
Moreover, the bending moment caused by the pedal body when the pedal is depressed increases by the amount of the bulge, which causes a problem of lowering the strength of the crank.

The present invention was devised to solve the above problems, and includes a cylindrical boss section on one side of the pedal body, a threaded section on the pedal shaft that is screwed onto the crank, and a mantle on the boss section. A receiving part to be fitted is provided, an annular groove is formed between the boss part and the receiving part, and the rolling elements are held in a line in the annular groove, so that the O-row of rolling elements holds the pedal body. By supporting the pedal body with a row of rolling elements, the pedal structure is simplified and assembly work is facilitated, and the attachment part of the pedal body to the crank is minimized. The small width was designed to prevent this part from coming into contact with the foot, and to reduce the bending moment caused by the body, thereby increasing the strength of the crank.

In addition, by providing a receiving part on the crank side part of the pedal shaft and supporting the body by interposing a row of rolling elements between this receiving part and the boss part of the body, the threaded part of the pedal shaft can be made larger. There is no need to do so, and the pedal can be attached to a general crank.

Next, the bicycle pedal of the present invention will be explained with reference to the embodiments shown in the drawings.

In the figure, reference numeral 1 denotes a pedal shaft, which has an operating hole 2 on one side, and a threaded portion 5 that is screwed into a screw hole 4 of a crank 3 on a part of the outer periphery on the operating hole 2 side. A large-diameter receiving portion 6 is provided on the other side of the threaded portion 5 of the shaft 1, and an annular groove 7 having a semicircular arc shape is formed on the outer periphery of the receiving portion 6.

Reference numeral 8 designates a pedal body which is to be rotatably supported on the pedal shaft 1, and has a cylindrical boss portion 9 on one side that can be fitted into the receiving portion 6) of the pedal shaft 1; It consists of a metal support body 10 that extends in the axial direction offset from the axis of the machine, and a plastic foot body 12 whose upper surface is a tread surface 11, and the foot body 12 is inserted into the support body 10. It is constructed by fixing them in one piece.

Thus, an annular body 14 having an inclined surface 13 on the inner end surface is integrally fitted inside the boss portion 9 of the support body 10, and an inclined surface 15 is provided on the inner end surface on the opening side of the boss portion 9. This annular body 14 and the pressing body 16 are screwed together.
The inclined surfaces 13 and 15 form one V-shaped annular groove 17 that faces the annular groove 7 of the receiving portion 6 of the pedal shaft 1.

A large number of rolling elements 18 are arranged in a line between the annular grooves 7 and 17 formed by the receiving part 6 of the pedal shaft 1 and the annular body 14 and the pressing body 16 supported by the boss part 9 of the support body 10. The pedal body 8 is rotatably supported on the pedal shaft 1 by this row of rolling elements 18.

Incidentally, the pedal of the present invention can also be constructed as shown in FIG.

That is, one annular groove 19 having a semicircular arc shape is formed on the inner circumferential surface of the boss portion 9 of the support body 10, while an inclined surface 20 is provided on the outer end surface of the receiving portion 6 of the pedal shaft 1. A tapped hole 21 is formed in the axial center of the pedal shaft 1, and a pressing body 24 is provided in the tapped hole 21, which has an inclined surface 23 that faces the inclined surface 20 and forms a V-shaped annular groove 22. , a large number of rolling elements 18 are threaded through the outer opening 25 of the boss part 9 and are disposed between the annular grooves 19 and 22 formed by the annular groove 19 of the boss part 9 and the pedal shaft 1 and the pressing body 24. It is also possible to charge the pedals in a row and use the row of rolling elements 18 to rotatably support the pedal body 8 on the pedal shaft 1.

As explained above, in the bicycle pedal of the present invention, the boss part of the pedal body and the receiving part of the pedal shaft each have IT.
One annular groove is formed, rolling elements are inserted in a row between each annular groove, and the row of rolling elements supports the pedal body freely around the pedal shaft. The structure and assembly work of the pedal body can be simplified, and it can be provided at low cost, and the part where the pedal body is attached to the crank, that is, the part where the body is attached to the crank, that is, the boss part of the body, can be made narrow. The pedal can be rotated smoothly without the foot touching the part when rotating the pedal, and by making the width of the boss part small, the bending moment of the body relative to the crank can be made small. This increases the strength of the crank.

Moreover, in the present invention, a receiving part is provided on the side part of the pedal shaft, the boss part of the body is fitted into the receiving part, and a row of rolling elements is interposed between the receiving part and the boss part. is supported on the pedal shaft, there is no need to make the threaded part of the pedal shaft large in diameter, and the threaded part of the shaft can be made small in diameter. Therefore, there is no need to use a dedicated crank as in the past. It was now possible to attach eccentric cantilevered pedals to general-purpose cranks.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view of the pedal according to the present invention;
The figure is a sectional view showing another example of the pedal. 1...Pedal shaft, 3...Crank, 5
...Threaded part, 6...Receiving part, 7, 17,
19, 22... Annular groove, 8... Pedal body, 9... Boss portion, 11... Tread surface, 18... Rolling element.

Claims (1)

[Scope of utility model registration request] A bicycle pedal comprising a pedal body having a tread surface supported in a cantilever manner on a pedal shaft screwed onto the crank of a bicycle, the pedal body having a cylindrical boss portion on one side, and a cylindrical boss portion provided on one side of the pedal body; a threaded portion to be screwed onto the crank of the bicycle, and a receiving portion to be fitted over the boss portion; one annular groove is formed on each opposing surface of the boss portion and the receiving portion; A bicycle pedal, characterized in that rolling elements are held in a row between the grooves, and the pedal body is rotatably supported on a pedal shaft by one row of the rolling elements.