JPH0322069Y2 - - 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 portion is provided at the rear of the pedal main body, and the first locking portion is provided at the rear of the pedal main body, and operates by interfering with the shu plate when applying pedal force to the pedal main body, and engages the rear end of the shu plate. A locking body having a second locking portion for locking is provided so as to be swingable toward the rear with respect to the pedal main body, and the locking body is attached forward between the locking body and the pedal main body. A compression spring is provided at a contact portion of the locking body with the show plate, and the locking body is swung against the spring by a lateral twisting force of the show plate. It is known that the show plate is provided with a control surface for releasing the second locking portion of the show plate.

By the way, in this conventional pedal, the front end of the shoe plate attached to the bottom surface of the shoe is locked to the first locking portion of the pedal main body, and the shoe plate is placed on the tread surface of the pedal main body. By bringing the rear end of the shoe plate into contact with the upper surface of the locking body and depressing the pedal body in this state, the locking body swings backward with respect to the pedal body against the spring. , the rear end of the show plate enters inside the second locking part of the locking body, and the locking body moves back by the force of the spring, so that the rear end of the show plate moves into the second locking part of the locking body. The shoe plate is held on the pedal by engaging with the second locking portion, and by twisting the shoe plate in the lateral direction about the locking position of the shoe to the first locking portion, the shoe plate is held by the pedal. The rear end of the show plate comes into contact with the control surface of the locking body, causing the locking body to swing rearward with respect to the pedal main body against the spring, and the second The locking by the locking portion is released.

(Problems to be Solved by the Invention) However, in the conventional pedal, when the shoe plate is attached to the pedal and when removed from the pedal,
Since the structure is such that the locking body is swung by deflecting a compression spring that biases the locking body, even if the shoe is unexpectedly twisted in the lateral direction during racing, the shoe plate remains stable. In order to prevent the pedal from coming off the pedal, it is necessary to set the force of the spring to be large. However, if the force of this spring is increased, a large pedal force is required to attach the shoe plate to the pedal, making it difficult to attach the shoe plate.

The object of the present invention is to enable a shoe plate to be easily attached to a pedal with a small pedal effort, and to also enable the shoe plate to be firmly attached so that it will not come off unexpectedly during racing.

(Means for Solving the Problems) Accordingly, the present invention provides a first locking portion that locks the front end of the shoe plate of the shoe on the front portion of the pedal main body 2 that is rotatably supported on the pedal shaft 1. 21 is provided at the rear of the pedal main body 2, and a second lock is provided at the rear of the pedal main body 2, which operates by interfering with the shu plate and locks the rear end of the shu plate when a pedal force is applied to the pedal main body 2. a locking body 5 having a portion 51; and a locking body 5 having a latching portion 51, and a lateral movement centering on the locking position of the shoe to the first locking portion 21 without interfering with the shoe plate when applying pedal force to the pedal main body 2. By twisting in the direction of
A first spring 7 and a first spring 7 are provided between the locking body 5 and the release body 6 and the pedal main body 2 so as to be retractable toward the rear. In addition to providing a second spring 8,
At the contact portion of the release body 6 with the show plate, the release body 6 and the locking body 5 are moved back against the respective springs 7 and 8 by a lateral twisting force of the show plate. , a control surface 61 is provided for releasing the locking of the show plate by the second locking portion 51.

(Function) When attaching the show plate to the pedal, the front end of the show plate is locked to the first locking part 21, and the rear end is stepped on while interfering with the upper surface of the locking body 5.
This pedaling force causes the locking body 5 to retreat against the first spring 7, and the rear end of the shoe plate is moved to the second locking portion 51 without interfering with the release body 6.
Since the release body 6 is not actuated, the show plate can be easily attached with a small pedal force. Further, in order to remove the shoe plate from the pedal, twist the shoe plate laterally, transmit this twisting force from the control surface 61 to the locking body 5 via the release body 6, and remove the shoe plate from the pedal. The release body 6 and the locking body 5 are moved backward against the first and second springs 7 and 8 to release the second locking portion 51 of the show plate. Since the shoe plate will not come off unless it is activated, it is possible to prevent the shoe plate from accidentally coming off the pedal when racing.

(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 rotatably supported on the pedal shaft 1, and the pedal main body 2 has a central pedal part 2a supported on the pedal shaft 1, a horseshoe-shaped front pedal part 2b, and opposing side walls. Rear step 2c equipped with
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 end portion 2b of the pedal main body 2.
1, and a single pivot shaft 4 is installed between the side walls of the rear pedal part 2c of the pedal main body 2, and on this pivot shaft 4,
A second locking portion 51 that operates by interfering with the lower surface of the second engaging portion 32 of the shoe plate 3 to lock the second engaging portion 32 when applying a pedal force to the pedal main body 2;
a locking body 5 with The engaging surface 33a of the recessed portion 33 in the show plate 3 due to twisting in the direction
A release body 6 having an abutting portion that comes into contact with the pedal body 2 is supported so as to be retractable toward the rear with respect to the pedal body 2, and between the locking body 5 and the release body 6 and the pedal body 2, the A first spring 7 and a second spring 8 are provided to urge the locking body 5 and the release body 6 forward, and the abutment portion of the release body 6 with the engagement surface 33a of the shoe plate 3 is provided with the The release body 6 and the locking body 5 are pulled together by the springs 7 and 8 by the lateral twisting force of the show plate 3.
a control surface 61 for retracting the show plate 3 against the second locking portion 51;
was established.

In the above configuration, the locking body 5 includes the seventh,
8 As shown in Figure 8, the pedal main body 2 is formed into a box shape with an open front, and the rear part of the pedal main body 2 is closed, and a receiving recess 52 is provided in the upper wall of the locking body 5 to receive the upper part of the release body 6. In addition, an inclined surface 53 is provided on the front end surface of the upper wall, and is inclined downwardly toward the front and engages with the lower surface of the second engaging portion 32 when applying pedal force to the pedal main body 2; A shaft hole 54 through which the pivot shaft 4 is inserted, and a detent piece 55 protruding forward from the shaft hole 54 are provided at the lower part of both side walls, and the first spring 7 is provided at the lower part of the rear wall. A spring hook 56 that engages one end is provided, and the locking body 5 is swingably supported with respect to the pedal main body 2 by inserting the pivot shaft 4 into the shaft hole 54 .

Further, the release body 6 has a head portion 6a having the control surface 61 on the front surface as shown in FIGS. and a pair of legs 6c having a shaft hole 63 through which the pivot shaft 4 is inserted.
the rear part thereof is in contact with the inner surface of the rear wall of the locking body 5, or
The heads 6 are opposed to each other with a slight interval therebetween.
The control surface 61 portion of a is connected to the inclined surface 53 of the locking body 5.
The release body 6 is supported in a swingable manner relative to the pedal main body 2 by being inserted into the shaft hole 63 of the pivot shaft 4 . Further, two control surfaces 61 are provided so as to be inclined toward the center toward the front. Moreover, this control surface 61 is
It slopes downward toward the front. Further, the head portion 6a of the release body 6 is provided with a protruding portion that protrudes into the receiving recess 52 of the locking body 5.

Further, the upper wall of the locking body 5 and the head 6a of the release body 6 protrude outward from the upper surface of the pedal main body 2.

Further, each of the springs 7 and 8 is a torsion spring whose middle portion is wound and both ends are extended in the tangential direction. It is supported on the pivot shaft 4.
By doing so, the winding portions of the springs 7 and 8 are attached to the locking body 5 and the release body 6, in addition to the support portion that supports the locking body 5 and the release body 6 on the pedal main body 2. Since there is no need to provide a special supporting part, the vertical thickness of the pedal main body 2 on the rear side can be made thinner than in the conventional example using a compression spring, and the pedal can be made lighter accordingly. Road clearance can also be reduced.

Further, a lid body 9 is provided on the upper rear side of the pedal main body 2.
Also, an adjusting screw 10 is installed between the bottom and the lid 9 so that it can rotate freely, and a spring receiver 11 that locks the other end of the second spring 8 is screwed onto the adjusting screw 10. The spring receiver 11 can be moved up and down by rotating the adjustment screw 10, and the spring force of the second spring 8 can be adjusted. Rotation stopper piece 5
A lock lever 12 having a contact portion 12a that can come into contact with the pedal body 2 is pivotally supported, and the tip of this lever 12 is made to protrude outward from a long hole 22 provided in the side wall of the pedal main body 2. By swinging the lever 12, the abutting portion 12a is brought into contact with the rotation preventing piece 55, thereby preventing the locking body 5 from retreating.

In addition, 13 in the figure is a disc spring.

Since the present invention is constructed as described above,
When attaching the show plate 3 to the pedal, the first engagement part 31 of the show plate 3 is engaged with the first engagement part 21 of the pedal main body 2, and the lower surface of the second engagement part 32 is attached to the pedal body 2. It is pressed into contact with the inclined surface 53 of the locking body 5. At this time, the recessed portion 33 of the show plate 3 vertically faces the head of the release body 6, so that the release body 6 does not interfere with the show plate 3.

As a result of the stepping, a rearward force acts on the inclined surface 53 of the locking body 5, and only the locking body 5 swings backward against the first spring 7, as shown in FIG. and the inclined surface 5 of the lower surface of the second engaging portion 32
The contact with 3 is lost. Then, the locking body 5 is returned by the force of the first spring 7, the second locking part 51 engages with the second engaging part 32, and the show plate 3 is locked to the locking body 5. and will be immovably mounted. At this time, show plate 3
The engaging surface 33a of the recessed portion 33 is in contact with the control surface 61 of the release body 6.

As described above, when the show plate 3 is attached, only the locking body 5 swings and the release body 6 does not swing. Therefore, the force necessary to bend the first spring 7 is applied to the show plate 3 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 61 of the release body 6.

Therefore, due to the twisting force, the control surface 61
A backward component force acts on the release body 6.
swings backward against the second spring 8, and the release body 6 comes into contact with the locking body 5, and the locking body 5 and the release body 6 are integrated to release the first and second springs. 7 and 8, the second locking portion 51 is disengaged from the second engaging portion 32 of the show plate 3 as shown in FIG. can be removed.

As described above, when the show plate 3 is removed, the release body 6 and the locking body 5 are swung, so that a twisting force sufficient to deflect the first and second springs 7 and 8 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 7 and the spring force of the second spring 8 can be applied to the locking of the shoe plate 3 by the locking body 5 even if the shoe is unexpectedly twisted in the lateral direction during racing. By setting the spring force to a value that does not allow the show plate 3 to detach unexpectedly, it is possible to prevent the show plate 3 from detaching unexpectedly.Moreover, for example, by increasing the spring force of the second spring 8 within the range of the set spring force, Since the spring force of the first spring 7 can be made small and the pedal force required to swing the locking body 5 can be made very small, the shoe plate 3
It can be easily installed with a small amount of pedal effort.

In the embodiment described above, the locking body 5 and the release body 6 are provided to be swingable, but they may also be provided to be movable in the front-rear direction of the pedal main body 2, for example.

Further, although the release body 6 is provided with two control surfaces 61 that are inclined toward the center toward the front, there may be only one control surface 61. The control surface 61 may be a surface that slopes downwardly toward the front, or may be a surface that does not slope. It is sufficient if the structure is such that the locking by the second locking portion 51 of the show plate 3 is released by moving it backward relative to the second locking portion 51 of the show plate 3. Moreover, the locking body 5
The structure of the release body 6 is not particularly limited.

(Effect of the invention) As described above, the present invention provides the locking body 5 biased by the first spring 7 and the release body 6 biased by the second spring 8, and the locking body 5 and the release body 6, when the show plate is attached, only the locking body 5 is operated to lock the show plate to this locking body 5, and when the show plate is removed, the show plate is Since the locking body 5 and the release body 6 are actuated by the twisting force in the lateral direction to release the locking of the show plate by the locking body 5, the show plate is It can be easily attached with a small pedal force that only deflects the spring 7, and moreover, it is possible to prevent the locking of the shoe plate by the locking body 5 from being released unexpectedly during racing.

[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 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 part, 5...Latching body, 51...Second locking part, 6...Release body, 61...Control surface, 7...
1st spring, 8...2nd spring.

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.
When applying pedal force to the pedal main body 2, at the rear of the pedal,
a locking body 5 having a second locking part 51 that operates by interfering with the shoe plate and locking the rear end of the shoe plate; The shoe plate has an abutting portion that comes into contact with the rear end of the shoe plate by twisting in the lateral direction around the locking position of the shoe to the first locking portion 21 without interfering with the shoe plate. A release body 6 is provided so as to be retractable toward the rear with respect to the pedal main body 2, and these locking bodies 5 and release bodies 6
A first spring 7 and a second spring 8 that bias the locking body 5 and the release body 6 forward are provided between the pedal main body 2 and the pedal main body 2, and a first spring 7 and a second spring 8 are provided between the release body 6 and the shoe plate. The release body 6 is released at the contact portion by the lateral twisting force of the show plate.
and a control surface 61 for retracting the locking body 5 against the respective springs 7 and 8 and releasing the locking by the second locking portion 51 of the show plate. pedal.