JPH0245119Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to bicycle pedals, and more particularly to pedals suitable for racing bicycles.

(Prior Art) Conventionally, as described in Japanese Patent Application Laid-open No. 197478/1987, this type of pedal has a shoe plate at the front end of the pedal body which is rotatably supported on the pedal shaft. A first locking part is provided at the rear of the pedal main body, and a grooved support part parallel to the pedal shaft and a bearing hole extending in the front-rear direction and perpendicular to the axis of the pedal shaft are provided at the rear of the main body of the pedal. A locking body having a second locking portion for locking the rear end of the shoe plate and a shaft insertion hole is provided in the concave support portion at a predetermined interval, and the locking body has a shaft insertion hole rearwardly relative to the pedal main body. A spring bearing shaft that is inserted into the shaft insertion hole of the locking body is supported in the bearing hole, and between the front end of the spring bearing shaft and the rear end of the bearing hole. A compression spring is interposed to urge the locking body forward, and an adjustment nut is screwed onto a shaft portion of the spring bearing shaft that projects outward from the shaft insertion hole, and the adjustment nut is rotated. There is a known device in which the acting force of the spring can be adjusted by.

(Problems to be Solved by the Invention) However, according to this conventional pedal, in addition to the support part that supports the locking body, there is a
Since it is necessary to specially provide a bearing hole to support the spring bearing shaft, the structure is complicated and the cost is high. There is a problem in that the adjustment nut that adjusts the acting force of the spring protrudes significantly to the outside, and the support part of the locking body and the bearing hole are arranged in vertical positions at the rear of the main body of the pedal. Because there are
The vertical thickness of the rear side of the pedal body became thicker, which made the entire pedal heavier, and the road clearance could not be made smaller than a predetermined value.

The present invention was devised in view of the above-mentioned conventional problems.The purpose of the present invention is to simplify the structure while being able to adjust the spring force of the spring that biases the locking body. The spring force adjusting member for adjusting the force can protrude outward to a small extent.

(Means for Solving the Problems) Therefore, the present invention provides a first locking portion that locks the front end of the shoe plate of the shoe to the front portion of the pedal body 2 that is rotatably supported on the pedal shaft 1. 21,
The rear part of the pedal body 2 has a second locking part 51a that locks the rear end of the shoe plate, and when a pedal force is applied to the pedal body 2, it interferes with the shoe plate and locks the shoe plate. A locking body 5 that swings rearward with respect to the main body 2 is pivotally supported by a pivot shaft 4 parallel to the pedal shaft 1, and this pivot shaft 4 has a pair of spring feet. A coil spring 6 is wound around the pedal main body 2 to urge the pedal main body 2 forward, and a spring leg of the coil spring 6 on the pedal main body side and a spring receiver 7 for receiving the spring leg are housed in the rear of the pedal main body 2. A space 20 is provided, and the spring receiver 7 is movably installed inside the space 20, and the spring receiver 7 is screwed into the space 20, and the spring receiver 7 is moved by a rotational operation. An adjustment screw 8 for adjusting the spring force of the coil spring 6 is provided.

(Function) By locking the front end of the show plate to the first locking portion 21 and stepping on the rear end while interfering with the upper surface of the locking body 5, the locking body 5 is activated by the coil spring 6. The second locking portion 51a of the locking body 5 swings backward against the acting force of
For example, by twisting the show plate laterally and swinging the locking body 5 backward, the show plate is locked by the second locking portion 51a of the locking body 5. Since the coil spring 6 is wound around the pivot shaft 4 that pivotally supports the locking body 5, the structure can be simplified. Further, the spring force of the coil spring 6 can be adjusted by rotating the adjusting screw 8, and the adjusting screw 8, spring receiver 7, and spring foot for adjusting this spring force are provided on the pedal main body 2. Since it is located within the space 20, the protrusion of the spring force adjusting member to the outside can be reduced.

(Example) In the figure, 1 is a pedal shaft attached to the free end of the crank arm of a bicycle crank,
Reference numeral 2 denotes a pedal main body which is rotatably supported on the pedal shaft 1, and this pedal main body 2 has a central pedal part 2a supported on the pedal shaft 1, a horseshoe-shaped front pedal part 2b, and a rear pedal part 2c. It is formed by Further, reference numeral 3 denotes a show plate attached to the bottom surface of the shoe S, and the front end of this show plate 3 is provided with a first engaging part 31, and the rear end thereof is provided with a second engaging part 32. and a substantially V-shaped recessed portion 33 having an engaging surface 33a that slopes downward toward the front.

Therefore, in the illustrated embodiment, a first locking portion 2 that engages with the first engaging portion 31 of the shoe plate 3 is provided at the front end portion of the front pedal portion 2b of the pedal main body 2.
1, and a space 20 is provided on the side of the rear pedal part 2c of the pedal main body 2, the rear surface of which is open, leaving side walls that face each other in the lateral direction, and between the side walls, there is provided a space 20 that is parallel to the pedal shaft 1. A pivot shaft 4 is constructed, and a second locking portion 51 for locking the second engaging portion 32 of the shoe plate 3 is provided at both end portions of the pivot shaft 4, and the second locking portion 51 locks the second engaging portion 32 of the shoe plate 3. When a pedal force is applied, a locking body 5 that interferes with the shoe plate 3 and swings backward with respect to the pedal main body 2 is pivotally supported, and the pivot shaft 4 has a pair of spring feet. A coil spring 6 is wound around the locking body 5 to urge it forward with respect to the pedal main body 2, and a spring leg of the coil spring 6 on the side of the pedal main body and a spring receiver 7 for receiving the spring leg are placed in the space 20. The spring receiver 7 is movable within the space 20, and the spring support 7 is movable within the space 20.
An adjusting screw 8 is provided which is screwed into the spring receiver 7 and moves the spring receiver 7 through rotational operation to adjust the acting force of the coil spring 6.

In the above configuration, the locking body 5 includes a locking main body 51 having the second locking portion 51a and an engaging surface 33 of the recessed portion 33 in the shoe plate 3.
a release body 5 having a control surface 52a in contact with a
The locking body 51 is formed into a box shape with an open front as shown in FIGS. 7 and 8, and closes the rear surface of the space 20 of the pedal body 2. 51 on the upper wall, the release body 5
A receiving recess 51b is provided on the front end surface of the upper wall to receive the upper part of the 2, and the receiving recess 51b is inclined downwardly toward the front.
An inclined surface 51c is provided which engages with the lower surface of the second engaging portion 32 when a pedal force is applied to the pedal main body 2, and a shaft hole 51d through which the pivot shaft 4 is inserted is provided at the lower part of both side walls. , a rotation prevention piece 51e protruding forward from the shaft hole 51d portion, and
A spring hook 51f is provided at the lower part of the rear wall, and the locking main body 51 is movably supported with respect to the pedal main body 2 by inserting the pivot shaft 4 into the shaft hole 51d.

As shown in FIGS. 5 and 6, the release body 52 includes a head portion having the control surface 52a on the front surface, a body portion having a spring hook portion 52b, and a shaft hole 52c through which the pivot shaft 4 is inserted. This release body 52 is arranged inside the locking main body 51, and the rear part of the release body 52 is in contact with the inner surface of the rear wall of the locking main body 51, or is slightly spaced apart from the rear wall of the locking main body 51. The control surface 52a of the head part is made to protrude forward with respect to the inclined surface 51c of the locking main body 51, and the release body 52 is moved by inserting the pivot shaft 4 into the shaft hole 52c. It is swingably supported with respect to the pedal main body 2.

Further, two control surfaces 52a are provided so as to be inclined toward the center toward the front. Further, this control surface 52a is inclined downwardly toward the front. Further, the head portion of the release body 52 is provided with a protruding portion that protrudes into the receiving recess 51b of the locking main body 51.

Also, the upper wall of the locking main body 51 and the release body 5
The head part 2 projects outward from the upper surface of the pedal main body 2.

The coil spring 6 has two first and second springs 6 wound in the middle and extending in the tangential direction at both ends.
1 and 62, and the wound portions of these springs 61 and 62 are supported on the pivot shaft 4 which pivotally supports the locking main body 51 and the release body 52, and as shown in FIG.
One side spring foot 61a of the spring 61 is locked to the spring hook portion 51f of the locking main body 51, and the other side spring foot 6
1b is brought into contact with the inner surface of the lid body 9 attached to the rear upper part of the pedal main body 2, and the second
One end side spring foot 62a of the spring 62 is brought into contact with the spring receiver 7, and the other end side spring foot 62b is locked to the spring hook portion 52b of the release body 52.

Further, the adjusting screw 8 is attached freely to rotate between the rear bottom of the pedal main body 2 and the lid 9, and the spring receiver 7 is moved up and down by the rotational operation of the adjusting screw 8. The spring force of the second spring 62 can be adjusted.

Further, on the rear side of the pedal main body 2 and on the upper end side of the adjustment screw 8, a lock lever 10 having a contact portion 10a that can come into contact with the rotation prevention piece 51e of the locking main body 51 is pivotally supported. The tip of the lever 10 is made to protrude outward from a long hole 22 provided in the side wall of the pedal main body 2, and by swinging the lever 10 with this protrusion, the abutting portion 10a is secured to the rotation prevention piece 51e. The locking main body 51 is brought into contact with the locking main body 51.
We are trying to prevent a retreat.

In addition, 11 in the figure is a disc spring.

The present invention is constructed as described above, and when attaching the shoe plate 3 of Shoes S to the pedal,
The first engagement part 31 of the shoe plate 3 is engaged with the first engagement part 21 of the pedal main body 2, and the second engagement part 31 is engaged with the first engagement part 21 of the pedal main body 2.
The lower surface of the engaging portion 32 is connected to the inclined surface 5 of the locking main body 51.
1c and step on it. At this time, the recessed portion 33 of the show plate 3 vertically faces the head of the release body 52 so that the release body 52 does not interfere with the show plate 3.

As a result, the locking main body 51
A backward force acts on the inclined surface 51c of the ninth
As shown, only the locking main body 51 swings backward against the first spring 61, and the lower surface of the second engaging portion 32 comes out of contact with the inclined surface 51c. Then, the locking main body 51 is returned by the force of the first spring 61, the second locking portion 51a engages with the second engaging portion 32, and the show plate 3 is locked to the locking main body 51. and will be immovably mounted. At this time, the engagement surface 33a of the recessed portion 33 in the show plate 3 is in contact with the control surface 52a of the release body 52.

As described above, when the show plate 3 is attached, only the locking main body 51 swings and the release body 52 does not swing. can be installed.

When removing the show plate 3, the show S is attached to the first locking portion 2 of the show plate 3.
1, and this twisting force is applied from the engagement surface 33a of the show plate 3 to the control surface 52a of the release body 52.

Therefore, due to the twisting force, the control surface 52
A backward component force acts on a, and the release body 52 swings backward against the second spring 62, and the release body 52 abuts on the locking main body 51, and this locking main body 51 and the release body 52 are integrated and swing backward against the first and second springs 61 and 62, and as shown in FIG.
Second engaging portion 32 in show plate 3 of 1a
The show plate 3 can be removed from the engagement with the show plate 3.

As described above, when removing the show plate 3, the release body 52 and the locking main body 51 are swung, so that a twisting force sufficient to bend the first and second springs 61, 62 is applied to the show plate 3. Otherwise, the show plate 3 cannot be removed. Therefore, the sum of the spring force of the first spring 61 and the spring force of the second spring 62 can be applied to the locking of the shoe plate 3 by the locking body 51 even if the shoe is unexpectedly twisted in the lateral direction during racing. By setting the spring force to such a level that the locking body 5 does not come off, it is possible to reliably prevent the show plate 3 from coming off unexpectedly.
Since the coil spring 6 is wound around the pivot shaft 4 that supports the coil spring 6, there is no need to provide a special support structure for supporting the coil spring 6, which simplifies the structure. By rotating the coil spring 6, the spring force of the coil spring 6 can be arbitrarily adjusted according to the driver's physical strength and preference.
Further, the locking body 5 consisting of the locking main body 51 and the release body 52 is used, and the first and second springs 6 are used.
1 and 62, for example, the spring force of the second spring 62 is increased and the spring force of the first spring 61 is decreased within the range of the set spring force to swing the locking main body 51. Since the pedal force required for this can be made very small, the shoe plate 3 can be easily attached with a small pedal force.

Furthermore, since the adjustment screw 8, the spring holder 7, and the pedal main body side spring foot for adjusting the spring force of the coil spring 6 are located within the space 20 of the pedal main body 2, the protrusion of the spring force adjustment member to the outside is minimized. It can be done.

(Effect of the invention) As described above, according to the invention, the locking body 5 urged by the coil spring 6 can be swung to attach and detach the shoe plate to and from the pedal main body 2. Moreover, by utilizing the pivot shaft 4 that pivots the locking body 5 to the pedal main body 2, this pivot shaft 4
Since the coil spring 6 is wound around the coil spring 6, there is no need to provide a special support structure for supporting the coil spring 6, which simplifies the structure and reduces costs. The upper and lower thicknesses on the rear side of the pedal can be made thinner, which allows the pedal to be made lighter and the road clearance to be reduced.

Furthermore, a space 20 is provided at the rear of the pedal main body 2 to accommodate a spring leg of the coil spring 6 on the side of the pedal main body and a spring receiver 7 for receiving the spring leg, and the spring receiver 7 is inserted into the space 20. The interior is movable, and an adjustment screw 8 is provided in the space 20, which is screwed into the spring receiver 7 and adjusts the spring force of the coil spring 6 by moving the spring receiver 7 through rotational operation. Therefore, while the spring force can be adjusted arbitrarily by rotating the adjusting screw 8,
Moreover, the outward protrusion of this spring force adjusting member can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted plan view showing an embodiment of the pedal of the present invention, Fig. 2 is a vertical side view with the locking body omitted, Fig. 3 is a longitudinal side view with the release body omitted, and Fig. 4 is a longitudinal side view with the release body omitted. The figure is a longitudinal rear view, Figure 5 is a perspective view of only the release body, Figure 6 is a plan view of the same, Figure 7 is a perspective view of only the locking body, Figure 8 is a plan view of the same, and Figure 9 is a schematic view. FIG. 10 is an explanatory diagram when the You plate is attached, FIG. 10 is an explanatory diagram when the You plate 3 is removed, FIG. 11 is a plan view of only the You plate, and FIG. 12 is a sectional view thereof. 1...Pedal axis, 2...Pedal main body, 21...
First locking portion, 4... Pivot shaft, 5... Locking body, 51
a...Second locking portion, 6...Coil spring, 7...Spring receiver, 8...Adjustment screw, 20...Space.

Claims (1)

[Scope of utility model registration request] A pedal main body 2 rotatably supported on a pedal shaft 1
A first locking portion 21 for locking the front end of the shoe plate of the shoe is provided at the front of the pedal main body 2.
has a second locking portion 51a that locks the rear end of the shoe plate, and when applying pedal force to the pedal main body 2, it interferes with the shoe plate and prevents the pedal main body 2. Locking body 5 that swings backwards
is pivoted by a pivot shaft 4 parallel to the pedal shaft 1,
A coil spring 6 having a pair of spring legs and urging the locking body 5 forward with respect to the pedal main body 2 is wound around the pivot shaft 4, while a coil spring 6 is wound around the rear of the pedal main body 2. A space 20 for accommodating the spring leg of the spring 6 on the side of the pedal main body and the spring receiver 7 for receiving the spring leg.
is provided, the spring receiver 7 is movably installed inside the space 20, and the spring receiver 7 is screwed into the space 20, and the spring receiver 7 is inserted into the space 20 by a rotational operation.
A bicycle pedal characterized in that an adjustment screw 8 is provided for adjusting the spring force of the coil spring 6 by moving the pedal.