JPS5953290A - Pedal for bicycle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bicycle pedal, and more particularly, to a pedal whose pedal body is rotatably supported on a crank arm of a bicycle crank via a pedal shaft. A pedal body is rotatably supported on a pedal shaft via a bearing, a tread is provided on one side of the pedal body, and the crank is rotated by placing a foot on the tread and stepping on the pedal. There is.

By the way, in cycling cars and competition bicycles, a balance weight is provided on the pedal body so that the tread surface is always in an upward position, but in this case, an unbalanced load acts on the pedal body. If the pedal body is prone to wobbling in the front and back directions relative to the pedal axis, the tread surface will also wobble in the front and back direction, making it difficult to step on the road surface, and there is also the risk of not stepping on the tread surface. It was expensive.

Furthermore, even in the case of a pedal without a balance weight, if the pedal body is rotated about the pedal axis so that the tread surface that is facing downward or sideways is facing upward, the pedal body may It wobbled back and forth, making it difficult to step on the tread.

The present invention was invented in view of the above points, and the purpose is to suppress the wobbling of the pedal body with respect to the pedal axis when the tread is in an upward position, and to make it easier to step on the road surface provided on the pedal body and to make it difficult to step off. The point is to provide pedals that can be used.

Accordingly, the present invention provides a bicycle pedal in which a pedal body is rotatably supported on a pedal shaft, and a tread is provided on one side of the pedal body, and the tread is provided between the pedal shaft and the pedal body. The present invention is characterized in that a resistance applying means is provided for applying resistance to the rotation of the pedal body with respect to the pedal shaft within a predetermined angular range with respect to a reference position of the pedal body located horizontally in an upward state.

In addition, in Kibatsu q, the pedal shaft includes not only the shaft itself but also a fixed member fixed to the pedal shaft, such as a ball pusher, and the pedal body includes not only the body itself but also the body. It includes a fixing member that is fixed to the pedal body and rotates together with the pedal body, such as a camp that protects the bearing part of the pedal body.

Embodiments of the pedal of the present invention will be explained below based on the drawings.

In the figure, (1) is a pedal shaft, (2) is a pedal body rotatably supported on this pedal shaft (1), and the pedal shaft (1) is a mounting shaft that is attached to a bicycle crank. (11), and a support shaft (12) extending axially outward from one end of the mounting shaft (11), and a screw (13) is provided on the outer periphery of the mounting shaft (11), and , a ball bearing surface (14) is provided on the outer periphery of the base end of the support shaft (12),
Screws (15) are provided on the outer periphery of each tip, and a ball pusher 3) having a single ball receiving surface (31) is screwed into the thread I5).

The pedal body (2) also includes a first body piece (21) extending in the axial direction of the pedal shaft (1), and a first body piece (21) disposed on both front and rear sides with the first body piece (21) in between. 2. Eighth body piece (22).

(23) and these first to third body parts (21) to
(23) connects both ends in the left and right direction; 4° It consists of fifth body parts (24) and (25), and the upper surface of each of these body parts (2I) to (25) has a tread (2a). has been established. Further, the first body piece (21) is provided with a through hole (26) for receiving the support shaft portion (12) of the pedal shaft (1), and bearings are provided at both axial ends of the through hole (26). Part (2
7), (28) are provided, and these bearing parts (27), (28) are provided.
) A bowl (4), (5) having ball receiving surfaces (41), (51) opposite to the ball receiving surfaces (14), (81) is provided,
Between the ball receiving surfaces (14) and (41) and between the ball receiving surfaces (81) and (5
1) Spheres (6), (6) are respectively interposed between the pedal shafts (1) to support the pedal shaft (1) in a freely rotatable manner. A cap (7) is attached to the outer end of the bearing (28) to prevent rainwater from entering into the supporting portion of the sphere (6).The present invention provides a pedal constructed as described above. , the reference position of the pedal body (2) in which the tread surface (2a) is located horizontally in an upward state between the pedal shaft (1) and the pedal body (2), for example, the X-ray in FIG. resistance applying means (for resisting rotation of the pedal body (2) with respect to the pedal shaft (1) in a predetermined angular range with respect to the position;
8).

As shown in Fig. 8.4, the resistance applying means includes an arcuate resistance applying surface (81) extending in the same direction as the circumferential direction of the pedal shaft (I), a resistance ring (82), and a resistance ring K. configure,
The resistance imparting surface (81) is disposed outside the bearing portion (28) of the pedal body (2), and the
) and facing the outer circumferential surface (la) of the tip part of the pedal shaft (1) at a predetermined interval, and the outer circumferential surface (la) of the tip part of the pedal shaft (1).
K supports the center hole (82a) of the resistance ring (82) so as to freely rotate;
) due to the weight of the resistance ring (82), the resistance imparting surface (8
1) to reduce the contact resistance of the resistance ring outer circumferential surface (82a) with the pedal shaft outer circumferential surface (la) and the resistance ring outer circumferential surface (82a).
The contact resistance with the resistance imparting surface (81) of 2b) provides resistance to the rotation of the pedal body (2) with respect to the pedal shaft (1). Note that the resistance imparting surface (81) is
The pedal body (2) is formed over a rotation range of a predetermined angle with respect to the reference position (X), and in a rotation range beyond this, the resistance imparting surface (81) is formed as shown in Figure @4. The relief surface (83) has a circular arc shape with a radius of curvature larger than the radius of curvature, so as not to come into contact with the resistance ring (82). That is, within the range where the resistance ring (82) contacts the resistance imparting surface (81), it provides resistance to the rotation of the pedal body (2) with respect to the pedal shaft (1);
In the range where the resistance ring (82) does not contact the resistance imparting surface (81), the pedal body (2) is connected to the pedal shaft (1).
This allows for free rotation.

The resistance ring (82) has a center hole (82a) having an inner diameter larger than the outer diameter of the outer circumferential surface (la) of the tip end of the pedal shaft (1), and is supported on the outer circumferential surface (la). At that time, due to its own weight, one side of the inner circumferential surface of the center hole (82a) is connected to the outer circumferential surface (la) and the outer circumferential surface of the resistance ring (82).
The negative side part of b) is made to contact the resistance imparting surface (81).

Note that the resistance imparting surface (81) is connected to the pedal body (2).
) is installed directly on the outer side of the bearing part (28).
Alternatively, it may be provided on a separate member and fixed by fitting, adhesive, set screws, or other fixing means. Further, the outer circumferential surface (Ia) of the tip end of the pedal shaft (1) is a smooth surface as shown, but the screw (15) may remain thereon, or it may be a rough surface.

Further, other means of the resistance applying means (8) include a resistance applying shaft (84) extending in the axial direction of the pedal shaft (1), the resistance ring (82), and the like as shown in FIG. 6.7. The cap (7) K is configured such that the resistance imparting shaft (84) is disposed outside the bearing portion (28) of the pedal body (2).
The distal end of the resistance imparting shaft (84) is opposed to the distal end of the pedal shaft (1) with a slight interval, and the outer peripheral surface (la) of the distal end of the pedal shaft (1) and the outer circumference of the resistance imparting shaft are arranged. The resistance ring (82) is freely rotatably supported between the resistance ring (82) and the resistance ring inner circumferential surface (82a) and the pedal shaft outer circumferential surface (1a) and the resistance-applying shaft outer circumferential surface (84a). Due to the contact resistance of the pedal body (2), the pedal shaft (
It provides resistance to rotation relative to 1). in this case,
The resistance imparting shaft (84) is formed, for example, in a semicircular shape as shown in FIG. Within the range of rotation by a predetermined angle with respect to the reference position (X),
bringing the resistance ring (82) into contact with the resistance imparting shaft (84);
In a rotation range beyond this, the resistance ring (82) is prevented from coming into contact with the resistance imparting shaft (84) as shown in FIG. The resistance imparting shaft (84) may be provided on the pedal body (2), or may be provided separately from the pedal body (1), for example on the bowl (5).

As described above, the resistance imparting means (8) includes the outer circumferential surface (la) of the pedal shaft (1), the resistance imparting surface (81), and the resistance ring (82), or the outer circumferential surface (Xa) of the pedal shaft (1). ), a resistance imparting shaft (84), and a resistance ring (82), but other structures may be used. Further, the resistance applying means (8) is connected to the pedal shaft (1) as shown in FIG.
) and the pedal body (2) itself, or (c) the cap (1) is fixed to the pedal shaft (1) itself and the pedal body (2) and rotates together with the pedal body (2) as shown in FIG. 7) Alternatively, it may be provided between a fixing member such as the bowl (5), or between a fixing member such as the body pusher 8) fixed to the pedal shaft (1) and the pedal body (2) itself. Alternatively, it may be provided between the fixing member on the pedal shaft (1) side and the fixing member on the pedal body (2) side. For example, it is possible to provide resistance to rotation of the pedal body (2) with respect to the pedal shaft (1) within a predetermined angular range with respect to a reference position (X) of the pedal body located in the horizontal direction in the horizontal direction. It's good.

Further, in the figure, (29) is an anti-slip protrusion provided on the tread (2a), (9) is a beam 7 receiver, and (10) is a lock nut.

In the pedal constructed as described above, the mounting shaft (II) of the pedal shaft (l) is screwed into the mounting hole provided at the free end of the crank arm of the bicycle crank. The pedal is positioned a predetermined angle forward in the depression direction from the top dead center of the crank, and the pedal is depressed by placing the foot K on the tread surface (2a) of the pedal body (2). When the pedal is depressed, the resistance imparting means, such as the resistance ring (82), comes into contact with the resistance imparting surface (81) and provides resistance to the rotation of the pedal body (2) with respect to the pedal shaft (I). Pedal body (2)
It is possible to suppress the wobbling of the pedal body (2) and the wobbling of the road surface (2a) provided on the pedal body (2).
a) is easy to depress, and there is little risk of stepping off the tread (2a).Also, when the pedal body (2) is reversed and the tread (2a) is in a downward position, Since the resistance @C82) is far away from contacting the resistance applying surface (81), the pedal shaft (1) of the pedal body (2)
), and therefore by applying a small force to the pedal body (2), the pedal body (2) can be rotated with respect to the pedal shaft (1) and the tread surface (2) can be rotated relative to the pedal shaft (1).
a) can be turned upward.

As described above, in the present invention, the pedal is provided between the pedal shaft and the pedal body in a predetermined angular range with respect to the reference position of the pedal body, in which the tread surface provided on one side of the pedal body is positioned horizontally in a downward state. Since the resistance providing means for providing resistance to the rotation of the body with respect to the pedal shaft is provided, it is possible to suppress wobbling of the pedal body with respect to the pedal shaft when the tread is in the upper state. Therefore, the tread surface provided on one side of the pedal body can be made easier to step on, and at the same time, can be made difficult to depress. Moreover, when the tread is in the downward position, the application of rotational resistance to the pedal body can be canceled, so that the tread can be moved upward by simply applying a small force to the pedal body.

Moreover, since the resistance applying means can be configured with an extremely simple structure consisting of, for example, the outer circumferential surface of the pedal shaft, the resistance applying surface, and the resistance ring, it can be provided at a low cost while suppressing wobbling of the pedal body.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the pedal of the present invention, Fig. 2 is a rear view, Fig. 8 is a sectional view taken along the line III, Fig. 1, and Fig. 4 is a sectional view taken along the line IV-IV of Fig. 1. A sectional view, FIG. 5 is an explanatory view when the tread is in a downward state, FIGS. 6 to 8 show other embodiments, and FIG. 6 is a sectional view corresponding to FIG. 8. , Fig. 7 is a sectional view corresponding to Fig. 4, and Fig. 8 is an explanatory view when the tread is in a downward position. 2)...Pedal body (2a)...
...Tread (8)...Resistance imparting means agent Patent attorney Tsu 1) Hisashi Nao

Claims (1)

[Claims] A bicycle pedal in which a pedal body is rotatably supported on a pedal shaft, and a tread surface is provided on one side of the pedal body, and the first surface is horizontal with the first surface facing upward between the pedal shaft and the pedal body. A bicycle pedal comprising: a resistance applying means for applying resistance to rotation of the pedal body with respect to a pedal shaft within a predetermined angular range with respect to a reference position of the pedal body located in the direction.