JP2014061857A - Bicycle pedal and bicycle comprising the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bicycle pedal that enables anyone to readily stretch the calf and Achilles' tendon of his/her leg, and a bicycle comprising the same.SOLUTION: A first tread 6 on the side of one surface of a pedal body 5 rotatably fixed to a pedal shaft 4 of a pedal 3 is formed as an inclined plane inclined to descend toward the side of a rear tread 6b from the side of a front tread 6a. A protrusion-like heel locking part 8 is formed along the width direction of the first tread 6, on the rear end surface of the first tread 6.

Description

  The present invention relates to a bicycle pedal and a bicycle including the bicycle pedal, and more particularly to a bicycle pedal including the bicycle pedal and the bicycle pedal that can stretch a calf and an Achilles tendon of a lower limb by pedal rotation.

  Stretching the calves of the lower limbs and the Achilles tendon are widely adopted as pre-sport preparatory exercises and post-sport organizing exercises. In addition, even for people who lack exercise, those who sit on a chair for a long time, work on a computer, etc., or those who drive a car for a long time, by stretching the calf and Achilles tendon of the lower limb, Effects such as relieving tension and removing swelling can be obtained.

  Stretching the calf and Achilles tendon of the lower limbs can be performed without using a dedicated device, but devices that can stretch the calf and Achilles tendon more effectively and easily have been proposed (for example, , See Patent Document 1).

  The device of Patent Document 1 is such that the legs are placed on a footboard inclined to the toe-up, and both feet are placed on the footboard, and the calf of the lower limbs and the Achilles tendon are maintained by holding the handrail. Is to stretch.

JP 2003-180720 A

  By the way, the device of Patent Document 1 is large in size and has a dedicated installation space so that the user can hold an upright posture by placing both feet on an inclined footboard and grasping a handrail. Is required. For this reason, since the installation location of the device is limited, it is difficult for anyone to stretch the calf and Achilles tendon of the lower limbs easily.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a bicycle pedal and a bicycle equipped with the bicycle pedal, which anyone can easily stretch the calf and Achilles tendon of the lower limbs.

  In order to achieve the above object, a bicycle pedal according to the present invention is a bicycle pedal attached to a crank arm of a bicycle, one end of which is connected to the crank arm, and the other end of the pedal shaft is rotated. A bearing portion that is pivotally supported, and a pedal body that is fixed to the bearing portion and is rotatable with respect to the pedal shaft, wherein the pedal body has at least one surface side on which a bicycle rider's feet are placed. The pedal tread is formed as an inclined surface that is inclined so as to descend from the front tread toward the rear tread, and a protrusion-like hook locking portion extends along the width direction of the pedal tread on the rear end surface of the pedal tread. It is characterized by being formed.

  A bicycle according to the present invention includes the bicycle pedal according to claim 1.

  According to the present invention, the pedal tread on at least one side of the pedal body for placing a bicycle rider's foot is formed as an inclined surface that is inclined so as to descend from the front tread toward the rear tread. On the rear end face of the tread, there is a protrusion-like hook locking part that is formed along the width direction of the pedal tread so that the bicycle driver steps on the rear tread on the pedal tread near the sole of the sole. Rotate.

  Therefore, by rotating the pedal with the ankle bent so that the toe side is above the heel, the calves of the lower limbs and the muscles and tendons of the Achilles tendon are moderately stretched, and the calves and Achilles tendon can be easily stretched it can.

The perspective view which shows the principal part of the bicycle provided with the bicycle pedal which concerns on Embodiment 1 of this invention. (A) is a perspective view which shows the bicycle pedal which concerns on Embodiment 1 of this invention, (b) is the side view, (c) is the top view. The figure which shows the state which puts a foot on the 1st tread of the bicycle pedal which concerns on Embodiment 1 of this invention, and has stepped on. The figure which shows the state which puts a foot on the tread surface of the normal bicycle pedal as a comparative example, and is stepping on. The perspective view which shows the bicycle pedal which concerns on Embodiment 2 of this invention. The perspective view which shows the bicycle pedal which concerns on Embodiment 3 of this invention. 1 is a perspective view showing a stationary bicycle (aero bike) including a bicycle pedal according to Embodiment 1 of the present invention.

Hereinafter, the present invention will be described based on the illustrated embodiments.
<Embodiment 1>
FIG. 1 is a perspective view showing a main part of a bicycle provided with a bicycle pedal according to Embodiment 1 of the present invention.

  As shown in FIG. 1, a bicycle 1 according to the present embodiment is a general bicycle mainly used for commuting, commuting, shopping, and the like, and pedals 3 to be described later are connected to the ends of a pair of crank arms 2. Has been. The bicycle 1 remains normal except for the pedal 3 which is a feature of the present invention.

  As shown in FIGS. 2A, 2B, and 2C, the pedal 3 is rotatable through a bearing shaft 9 and a pedal shaft 4 connected to the crank arm 2 by screwing. And a pedal body 5 connected to the pedal. In the pedal 3 shown in FIGS. 2A, 2B, and 2C, the left side in the figure is the pedal front side, and the right side in the figure is the pedal rear side. 2 (a), (b), and (c) are on the left side (left foot side), the right side (right foot side) has the same configuration.

  The resin pedal body 5 is integrally formed with a first tread surface 6 on one surface and a second tread surface 7 on the other surface by resin molding. Further, on the rear end surface of the first tread surface 6, a protrusion-like hook locking portion 8 is integrally formed along the entire width direction of the first tread surface 6 (the axial direction of the pedal shaft 4). The pedal body 5 is formed such that the front-rear direction (the left-right direction in FIG. 2C) of the pedal body 5 is longer than the width direction (the up-down direction in FIG. 2C).

  In addition, in the center part along the front-back direction of this pedal main body 5 in the pedal main body 5, the metal bearing part 9 which supported the pedal shaft 4 rotatably (refer FIG.2 (b), (c)). Is provided along the width direction of the pedal body 5.

  The first tread surface 6 is formed in an inclined surface that is inclined so as to be smoothly lowered from the front tread surface 6a toward the rear tread surface 6b. This inclined surface is curved to have a little R (R). An anti-slip groove is formed on the surface of the first tread surface 6.

  The second tread surface 7 is a flat tread surface provided on a general pedal, and this second tread surface 7 is used when performing a general pedal rotating operation of depressing the tread surface on the toe side.

  A hollow portion 10 is formed between the front portion of the pedal body 5 and the bearing portion 9 along the width direction. As shown in FIG. 1, the hollow portion 10 is formed so that the first tread surface 6 of the pedal body 5 is in a substantially horizontal state when the pedal shaft 4 of the pedal 3 is screwed into the crank arm 2 of the bicycle 1. This is for adjusting the weight balance between the front part and the rear part across the bearing part 9 of the pedal body 5.

  That is, since the first tread surface 6 is inclined so as to be lowered rearward, the front side of the pedal body 5 is heavier than the rear side unless the cavity 10 is provided, and the pedal shaft of the pedal 3 is placed on the crank arm 2. In a state where 4 is screwed, the pedal body 5 is lowered forward. In addition, weight reduction of the pedal main body 5 can also be achieved by providing the cavity part 10. FIG.

  Then, as shown in FIG. 3, the bicycle driver puts his / her foot (the back of the shoe) 11 on the first tread surface 6 of the left and right pedal bodies 5 and steps on the pedal 3 (crank arm 2) to rotate clockwise. The bicycle 1 (see FIG. 1) travels. At this time, the first tread 6 is inclined so as to be lowered rearward, and the rear portion of the heel is locked by the heel locking portion 8 so that the rear tread of the first tread 6 near the heel of the sole. Depress the 6b side and rotate the pedal 3.

  Therefore, by rotating the pedal 3 with the ankle bent so that the toe side is above the heel, the muscles and tendons of the calf 12 and the Achilles tendon 13 of the lower limbs are moderately stretched, and the calf 12 and the Achilles tendon 13 are stretched. can do.

  As described above, in the bicycle 1 including the pedal 3 according to the present embodiment, for example, when going to school, commuting, shopping, or the like, the foot 3 is placed on the first tread surface 6 of the pedal body 5 and stepped on. Anyone can easily stretch the calf and Achilles tendon of the lower limbs when going to school, commuting to work, shopping, etc., simply by performing the normal pedal rotation operation, such as rotating the foot.

  In the embodiment described above, the protrusion-like hook locking portion 8 provided on the rear end face of the first tread surface 6 is integrally formed along the entire width direction of the first tread surface 6. The hook locking portion 8 may be separated and screwed to the rear end surface of the first tread surface 6.

  FIG. 4 shows a normal pedal 20 attached to a general bicycle as a comparative example, and the tread surfaces 21a and 21b provided on both surfaces of the pedal body 21 of the pedal 20 are formed flat. Has been. The pedal body 21 is integrally formed of a resin material or a rubber material.

  In the case of a general pedal 20 as shown in FIG. 4, the bicycle rider steps on the toe side from the center of the flat tread surface 21 a to the front side and rotates the pedal 20. In this case, since the sole is in a substantially horizontal state, the muscles and tendons of the calf 12 of the lower limbs and the Achilles tendon 13 are not stretched. Therefore, in the case of a bicycle equipped with a general pedal 20, the calf and the Achilles tendon are not stretched even if a normal pedal rotation operation is performed.

<Embodiment 2>
In the first embodiment, only the first tread surface 6 of the pedal body 5 is an inclined surface that is inclined so as to be smoothly lowered from the front tread surface 6a toward the rear tread surface 6b. Although it was the structure which provided the latching | locking part 8, like the pedal 3a which concerns on this embodiment shown in FIG. 5, the 2nd tread 7 of the pedal main body 5 is similarly toward the rear tread 7b from the front tread 7a. It is also possible to provide an inclined surface that is inclined so as to be smoothly lowered and to provide a protruding hook locking portion 8 on the rear end surface of the second tread surface 7.

  In this way, both the first tread surface 6 and the second tread surface 7 of the pedal body 5 are inclined surfaces that are inclined so as to be smoothly lowered to the rear side, and the protrusion-like hook locking portion 8 is provided on the rear end surface. Therefore, even if the bicycle rider puts his / her foot on either tread, he can stretch the calf and the Achilles tendon by rotating the pedal 3 with the ankle bent so that the toe side is above the heel .

<Embodiment 3>
As shown in FIG. 6, in the pedal 3b according to the present embodiment, the first tread surface 6 is formed as an inclined surface that is inclined so as to be linearly lowered from the front tread surface 6a toward the rear tread surface 6b. The first tread surface 6 is formed with a plurality of anti-slip lateral grooves 6 c parallel to the axial direction of the pedal shaft 4. A vertical groove 6d is formed. Other configurations are the same as those of the first embodiment.

  Also in the present embodiment, as in the first embodiment, the calf and the Achilles tendon can be stretched by rotating the pedal 3b with the ankle bent so that the toe side is above the heel.

  In each of the above-described embodiments, a recess may be formed so that the shoe side of the shoe enters the rear tread from the vicinity of the center of the first tread 6 of the pedal. By putting the shoe heel side into this recess, it is possible to prevent the shoe heel from rattling, so that the pedal 3 can be rotated stably.

  Further, in each of the above-described embodiments, the protruding heel locking portion 8 provided on the rear end surface of the first tread surface 6 of the pedal may be curved in accordance with the shape of the heel rear portion of the shoe. By putting the back part of the shoe into the curved heel locking part 8, it is possible to prevent the back part of the shoe from rattling, so that the pedal 3 can be rotated stably.

  In the first embodiment, an example of a general bicycle as shown in FIG. 1 is used. However, the bicycle according to the present invention includes sports bicycles, road racers, mountain bikes, electric motors in addition to such general bicycles. An assist bicycle is also included, and a stationary bicycle (aerobike) 30 for indoor training as shown in FIG. 7 is also included.

  By attaching the pedal 3 of each of the above-described embodiments (the pedal 3 of the first embodiment in FIG. 7) to the stationary bicycle (aerobike) 30, a calf and an Achilles tendon are performed while performing aerobic exercise to rotate the pedal 3. Can be stretched.

DESCRIPTION OF SYMBOLS 1 Bicycle 2 Crank arm 3, 3a, 3b Pedal 4 Pedal shaft 5 Pedal main body 6 1st tread (pedal tread)
8 Hook engagement part

Claims (2)

A bicycle pedal attached to a bicycle crank arm,
A pedal shaft having one end connected to the crank arm;
A bearing that rotatably supports the other end of the pedal shaft;
A pedal body fixed to the bearing portion and rotatable with respect to the pedal shaft;
The pedal tread on at least one side of the pedal body for placing a bicycle rider's foot is formed as an inclined surface that slopes downward from the front tread toward the rear tread, and the rear end surface of the pedal tread The bicycle pedal is characterized in that a protruding hook locking portion is formed along the width direction of the pedal tread surface.   A bicycle comprising the bicycle pedal according to claim 1.