JPH0343914Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a bicycle brake operation device, particularly a bicycle brake operation device that can adjust the force of a return spring acting on a brake lever. Regarding.

(Prior Art) Conventionally, a brake operating device used for a bicycle is composed of a bracket B fixed to a handlebar H and a brake lever C pivoted to the bracket B, as shown in FIG. 8, for example. The brakes used with this brake operating device include a pair of brake arms F, F each having a brake unit E that comes into contact with the wheel rim D, and these brake arms. A support member G that swingably supports the brake arms F and F, and a support member G that is disposed between the support member G and the brake arms F and F, and that moves each of the brake arms F and F in the direction of the return position. and a return spring A for urging. Using an operating cable K consisting of an operating wire I and an outer tube O for guiding the wire W, one end of the operating wire W is supported by the brake lever C, and the other end is supported by the brake lever C. At the same time, one end of the outer cylinder O is supported by the bracket B, and the other end is supported by the brake gear.
The return spring A is supported on the other side of the springs F and F.
When the operating cable K is tensed and the brake lever C is operated forward by a stroke amount corresponding to the shoe clearance between the brake lever E and the wheel rim D during braking, the The brake arms F, F swing against the return spring A, press the brake units E, E against the wheel rim D to perform braking, and also release the brake when the brake is released. When the operation of the lever C is released, the brake arms F and F are returned by the force of the return spring A, and the return force of the brake arms F and F and the operation cable K are The signal is transmitted to the brake lever C via the brake lever C, and the brake lever C is returned to its original position.

(Problem to be solved by the invention) However, in the conventional bicycle brake operating device as described above, the return spring A is provided at the brake arm F, F of the brake and the support member G. Since the structure is such that the brake lever C is returned to its original position via the operating cable K with the force of
There was a problem in that it was not possible to increase or decrease the operating force required for E, E to contact the wheel rim D, or in other words, the response, depending on the driver's preference.

The present invention was developed in view of the above-mentioned conventional problems, and it is possible to arbitrarily adjust the operating force required from when the brake lever is gripped until the shoe contacts the braked object during braking operation. The main object of the present invention is to provide a bicycle brake operating device that allows a user to perform a braking operation with a feeling that suits the user's preference.

(Means for Solving the Problems) In order to achieve the above object, the present invention pivots a brake lever 4 to a bracket 3, and operates the brake lever 4 from its return position relative to the bracket 3. The brake operating device is configured to actuate a brake by operating an operating cable when the brake lever is operated to a position, and the brake lever 4 is always kept in a return position between the brake lever 4 and the bracket 3. A return spring 8 is provided for biasing the brake and releasing the brake by moving the brake force away from the braked object.
An adjustment means is provided for adjusting the force applied to the brake lever 4.

(Function) With the above configuration, the present invention allows the retarder to be adjusted by the adjustment means.
The force applied by the brake lever 4 to the return position of the brake lever 4 is adjusted, and the response from when the brake lever 4 starts to be gripped until the shoe comes into contact with the braked object can be made heavier according to the driver's preference. or make it lighter.

(Embodiments) The bicycle brake operating device according to the present invention will be described below with reference to embodiments shown in the drawings.

In the brake operating device of the embodiment shown in FIGS. 1 to 4, a bracket 3 is fixed to a bent rod portion h of a drop handle H via a band member 1 and a tightening body 2 that is threaded onto the band member 1. And this bracket 3
The base portion 41 of the brake lever 4, which has a base portion 41 and an operating portion 42, is swingably supported via a lever shaft 5.

The bracket 3 has a pair of opposing side walls 3.
a, 3b, a front wall 3c, a rear wall 3d, and a top wall 3e connecting these side walls 3a, 3b, and the tightening body 2.
The intermediate wall 3f has a supporting surface 31, and is formed into a generally rectangular cross-sectional shape with a hollow interior.
The intermediate wall 3f has a through hole 31 through which the tightening body 2 is inserted toward the band member 1 side, and an operating wire W.
and an insertion hole 32 through which the operating cable K consisting of an outer tube O that guides the wire W is inserted, and the tightening body 2 is screwed from the through hole 31 to the band member 1. The bracket 3 is fixed to the handle H, and a lever insertion opening is formed between the rear wall 3d and the top wall 3e, allowing the base 41 of the lever 4 to intervene. A lever support part 33 is provided on the upper part of the wall 3d, and the lever 4 is supported by the support part 33 through the lever shaft 5 so as to be able to swing freely.

Further, at the rear end of the top wall 3e of the bracket 3, a contact surface is formed on which the front end surface of the lever 4 comes into contact.

Further, a support body 6 for supporting the wire W is attached to the tip end side of the base portion 41 of the brake lever 4.

Further, a flexible protective case 10 is placed around the bracket 3.

Further, the operating wire W in the operating rope K has one end supported by a support 6 attached to the brake lever 4, and the other end supported by, for example, a pair of brake levers and each of these switches. The outer cylinder O is fixed to one of the brake arms in a brake equipped with a pair of brake arms, and the outer cylinder O has one end supported on the intermediate wall 3f of the bracket 3. The other end is supported by the other brake arm, and each brake arm is actuated by operating the brake lever 4.

In the above configuration, the apparatus of the embodiment shown in FIG. A support shaft 82 is installed above the support portion 33 of the support plates 81, 81, and the support shaft 82
2, supporting a return spring 8 for always biasing the brake lever 4 to the return position and releasing the brake by moving the brake lever 4 away from the braked object; While bringing one end of the return spring 8 into contact with the inner surface of the upper wall of the brake lever 4,
The other end is inserted and locked into a screw hole 34 provided in the rear part of the lever shaft 5 of the support part 33 of the bracket 3 in a substantially vertical direction, and the brake of the return spring 8 is inserted into the screw hole 34. - An adjustment screw 9 is screwed in to adjust the force applied to the lever 4 to return to the return position.

The return spring 8 is wound in the middle, and the wound part is wound around the support shaft 82, and both ends are oriented in the tangential direction, so that the end on the side that is locked in the screw hole 34 is oriented in the tangential direction. The return spring 8 is bent at a right angle, and the tip of the adjustment screw 9 is brought into contact with this bent end to deflect the return spring 8.

Further, the brake lever of the return spring 8
4 is bent at right angles, and a sliding ring 80 made of a material with a small coefficient of friction such as synthetic resin is fitted into this bent end, and this sliding ring 80 is connected to the brake lever. I am trying to make it contact 4.

In this embodiment, the elastic restoring force of the return spring 8 is changed by screwing the adjustment screw 9 forward and backward, and the force acting on the brake lever 4 of the return spring 8 is changed. It is something to be adjusted.

By adjusting the force acting on the brake lever 4 of the return spring 8, when the lever 4 is started to be gripped, the tip of the brake arm (F, F in FIG. 8) attached to the tip of the wire W is brake system
Depending on the driver's preference, the driver can make the response until the brake comes into contact with a braked object such as a wheel rim heavier or lighter.

Further, when the brake lever 4 is released after being gripped against the return spring 8, the restoring action of the return spring 8 causes the brake lever 4 to The restoring force of the brake lever 4 is transmitted to the brake, for example, the brake arm, through the operating cable K, and the brake arm is returned to its original position.

Next, in the device of the embodiment shown in FIG. 2, an oblique screw hole 35 with a downwardly downward end is provided behind the lever shaft 5 of the support portion 33 of the bracket 3, and an adjusting screw 9 is screwed into the screw hole 35. At the same time, one end of the return spring 8 is brought into contact with the inner surface of the upper wall of the brake lever 4, and the other end is brought into contact with the upper surface of the lever shaft 5, and the return spring 8 is placed on the side of the support portion 33 of the bracket 3. The tip of the adjusting screw 9 screwed into the screw hole 35 is brought into contact with the winding portion of the return spring 8.

In this embodiment, the winding portion of the return spring 8 is pressed by screwing the adjustment screw 9 forward and backward, and the force acting on the brake lever 4 of the return spring 8 is adjusted. Then, the response from when the brake lever 4 is started to be gripped until the brake lever comes into contact with a braked object such as a wheel rim is made heavier or lighter depending on the driver's preference. .

Next, in the apparatus of the embodiment shown in FIGS. 3a and 3b, the lever shaft 5 is connected to a bolt member 51 whose head 51a is locked to the outer surface of one side wall of the brake lever 4, and to a bolt member 51 whose head 51a is locked to the outer surface of one side wall of the brake lever 4. It consists of a nut member 52 with a head 52a locked on the outer surface, and a brake of the bolt member 51.
One support plate 81a is inserted into the rectangular surface 51c of the thick shaft portion 51b on the inner side wall of the brake lever 4 in a state where free rotation is prevented, and the other support plate 81b is inserted into the side wall of the brake lever 4 of the nut member 52. It is inserted into the inner cylindrical portion 52b, and both support plates 81
A support shaft 82 is installed above the support portion 33 of the bracket 3 at 81b, and a retarder is attached to the support shaft 82.
A spring 8 is supported. This return spring 8
One end is brought into contact with the inner surface of the upper wall of the brake lever 4, and the other end is brought into contact with the top of the support portion 33 of the bracket 3. Further, as shown in FIG. 3b, the nut member side inner surface of the thick shaft portion 51b of the bolt member 51 constituting the lever shaft 5 is formed with a locking uneven surface 51d; Uneven surface 5
The opposing surface of the support portion 33 of the bracket 3, which is opposite to 1d, is also formed into a locking uneven surface 33a.

When the nut member 52 of the lever shaft 5 is loosened from the bolt member 51, the locking uneven surface 51d of the thick shaft portion 51b of the bolt member 51 and the locking uneven surface 33a of the support portion 33 of the bracket 3 are loosened. Since the lock is released, the bolt member 51 becomes free to rotate, and the bolt member 51 is rotated together with the support plate 81a in the direction of arrow a or b, and the return spring 8
Adjust the force acting on the brake lever 4,
At the rotational position of the support plate 81a where the desired acting force is obtained, the nut member 52 is tightened, and both of the locking uneven surfaces 5 are tightened.
1d and 35a are locked and fixed to fix the entire position.

In this way, by adjusting the force acting on the brake lever 4 of the return spring 8, the driver can feel the response from when he or she begins to grip the brake lever 4 until the brake lever comes into contact with the braked object. It can be made heavier or lighter depending on one's preference.

Next, in the apparatus of the embodiment shown in FIG. 4, the support plates 81, 81 supported on the lever shaft 5 are provided with a stopper 83 for preventing rotation in the counterclockwise direction with respect to the bracket 3. In addition, the support plate 8
The return spring 8 is supported on the support shaft 82 installed between 1 and 81, and a mounting piece 81c is provided on the support plate 81, and the adjusting screw 9 is screwed onto the mounting piece 81c. The tip of the screw 9 is brought into contact with one end of the return spring 8.

By screwing the adjustment screw 9 forward and backward, the force acting on the brake lever 4 of the return spring 8 is adjusted, and when the brake lever 4 is started to be gripped, the brake lever is applied to the braked object. The response to contact can be made heavier or lighter depending on the driver's preference.

Further, as another embodiment of this type of device, a shaft portion is provided on the front wall 3c of the bracket 3, and a retarder is attached to the shaft portion.
While supporting the return spring 8 and bringing one end of the return spring 8 into contact with the base 41 of the brake lever 4,
The other end is brought into contact with the tip of an adjusting screw screwed into a screw hole provided above the shaft portion of the front wall 3c of the bracket 3, and as the adjusting screw is screwed up and down, the return spring 8 Adjust the force acting on the brake lever 4 and start gripping the brake lever 4 to release the brake.
Check the response until the brake comes into contact with the braked object.
It can be made heavier or lighter depending on the driver's preference.

The brake operating device according to the embodiment shown in FIGS. 5 to 7 includes a band member 1 and a tightening body 2 screwed onto the band member 1 on the bent rod portion of a drop handle (not shown).
A brake lever 4 is supported between both side walls of the bracket 3 in a freely swingable manner via a lever shaft 5, and an operating cable K is fixed to the front wall 3c of the bracket 3. It is designed to be pulled outward from the inside. Furthermore, a flexible protective case 10 is placed around the bracket 3.

In the above configuration, the device of the embodiment shown in FIGS. 5a and 5b has a shaft support 11 having an L-shaped arm portion 11a and a shaft insertion hole 11b in the support hole of the bracket 3 that supports the lever shaft 5. At the same time as inserting the support shaft portion 11c, the outer surface of the support shaft portion 11c of the support body 11 is formed into a locking uneven surface 11d, and a tool fitting hole 11e is formed in the center of the locking uneven surface 11d. The outer surface of the bracket 3 at the insertion position of the support 11 has a locking uneven surface 12a that can be locked to the locking uneven surface 11d of the support 11.
A locking lid body 12 having a convex shape at the center and having a handle insertion hole 12b penetrating from the outside thereof is attached and fixed with a small screw, and a lever is inserted into the shaft insertion hole 11b of the support body 11 via a spring 13. - Insert the shaft 5, fit and fix the side wall of the brake lever 4 to the lever shaft 5, and place the retarder at a substantially central position between the side walls of the brake lever 4 on the lever shaft 5. Spring 8
One end of the return spring 8 is in contact with the inner surface of the upper wall of the brake lever 4, and the other end is fixed to the tip of the L-shaped arm 11a of the support 11. It is.

Therefore, the device of this embodiment has the above configuration.
Insert a tool such as an Allen key into the handle insertion hole 12b of the locking lid 12, fit it into the tool fitting hole 11e of the support 11, and push the support 11 against the spring 13. Both locking uneven surfaces 12a,
11d and by turning the tool, the force acting on the brake lever 4 of the return spring 8 is adjusted to obtain the required force.
When the tool is released at rotation position 1, the support body 11 returns to its original position due to the elasticity of the spring 13, and both locking concave and convex surfaces 11d and 12a lock, and the support body 11 returns to its original position. Fixed in position.

In this way, the force acting on the brake lever 4 of the return spring 8 is adjusted, and the driver can feel the response from when he or she begins to grip the brake lever 4 until the brake lever comes into contact with the braked object. You can make it heavier or lighter depending on your preference.

Next, the apparatus of the embodiment shown in FIGS. 6a and 6b is as follows:
A locking groove 53 is formed by cutting out a part of the peripheral surface of the lever shaft 5 in the longitudinal direction at right angles, and the inner surface of the head 5a of the lever shaft 5 is formed into a locking uneven surface 54. , the bracket 3 facing the locking uneven surface 54
forming an opposing surface as a locking uneven surface 36, inserting the lever shaft 5 into the support hole of the bracket 3,
A side wall of the brake lever 4 is supported on the lever shaft 5, and a return spring 8 is inserted into the center position of the lever shaft 5 between both side walls of the brake lever 4.
One end of the spring 8 is brought into contact with the upper wall of the brake lever 4, and the other end is inserted and locked into the locking groove 53 of the lever shaft 5, and the male threaded portion 5 of the end of the lever shaft 5 is inserted and locked.
A nut 55 is screwed onto b.

Therefore, the device of this embodiment has the above configuration.
Loosen the nut 55 to disengage the locking uneven surface 54 on the inner surface of the head 5a of the lever shaft 5 and the locking uneven surface 36 of the bracket 3, and rotate the lever shaft 5 with a screwdriver or the like. Then, the brake of return spring 8
After adjusting the force acting on the lever 4 and obtaining the required force, tighten the nut 55,
The lever shaft 5 is fixed by locking both the locking uneven surfaces 54 and 36.

In this way, the force acting on the brake lever 4 of the return spring 8 is adjusted, and the response from when the lever 4 is started to be gripped until the brake lever comes into contact with the braked object can be adjusted to the driver's preference. Depending on the weight,
Or make it lighter.

Next, in the apparatus of the embodiment shown in FIGS. 7a and 7b, an operating plate 14 made of synthetic resin is rotatably supported on the lever shaft 5, and a position near one end of the operating plate 14 is directed inwardly. An elastically deformable projection 14b having a locking uneven surface 14a is provided, and the locking uneven surface 14a of the projection 14b is locked to a locking uneven surface 37 provided on the opposite surface of the bracket 3. Face to face removably,
One end of the return spring 8 inserted inside the side wall of the brake lever 4 of the lever shaft 5 is connected to the brake lever 4.
The other end is fixed to the other end of the operation plate 14.

Therefore, the device of this embodiment has the above configuration.
The operation plate 14 is rotated to adjust the force exerted by the return spring 8 on the brake lever 4 to obtain a desired force.

In this way, by adjusting the force acting on the brake lever 4 of the return spring 8, the driver can feel the response from when he or she begins to grip the brake lever 4 until the brake lever comes into contact with the braked object. It can be made heavier or lighter depending on one's preference.

Further, as another embodiment of this type of device, although not shown, a return spring 8 supported by the lever shaft 5 may be used.
One end is brought into contact with the upper wall of the brake lever 4, and the other end is brought into contact with the tip of an adjusting screw screwed into the front wall of the bracket 3, and by screwing the adjusting screw forward and backward, the reversal is performed. It is also possible to adjust the force acting on the brake lever 4 of the spring 8.

(Effects of the invention) As described above, the present invention provides a mechanism between the brake lever 4 and the bracket 3 to constantly bias the brake lever 4 to the return position and prevent brake failure in the brake. A return spring 8 is provided for releasing the brake by moving the object away from the brake object, and an adjusting means is provided for adjusting the force of the return spring 8 to return the brake lever 4 to the return position. Therefore, even if a return spring is provided auxiliary on the brake side, it is also important to adjust the force of the return spring 8 toward the return position of the brake lever 4 to a small value. It can also be adjusted, and this adjustment can be done simply and easily using the lever. With this adjustment, brake lever 4
The driver can freely increase or decrease the operating force, or response, required from when he/she starts to grip the brake until the brake lever comes into contact with the braked object, depending on the driver's preference. Even the driver can operate the brakes with a feeling that suits the driver's preference. Furthermore, since the force acting on the return spring to return the brake lever to the return position itself is adjusted, if the operating force applied to the brake lever is released, the brake can be adjusted regardless of the magnitude of the force acting on the brake lever. The lever can be quickly returned from the operating position to the return position, which also improves the driver's feedback.
This makes the ring better.

[Brief explanation of the drawing]

FIG. 1a is a longitudinal sectional view showing an embodiment of the present invention;
FIG. 1b is a cross-sectional view approximately at the center thereof, FIGS. 2 to 7a and 7b are sectional views of main parts of other embodiments, and FIG. 8 is an explanatory diagram showing a conventional example. 3...Bracket, 4...Brake lever, 8
...Return spring.

Claims (1)

[Scope of utility model registration request] A brake operating device in which a brake lever 4 is pivotally supported on a bracket 3, and when the brake lever 4 is operated from a return position relative to the bracket 3 to an operating position, an operating cable is operated to operate the brake. Between the brake lever 4 and the bracket 3, the brake lever 4 is always urged to the return position and the brake lever of the brake is moved away from the braked object. A return spring 8 is provided to release the brake.
A bicycle brake operating device characterized in that an adjusting means is provided for adjusting the force exerted by the spring 8 on the brake lever 4 to the return position.