JPS5921110Y2 - Berake adjustment device for motorcycles - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for adjusting the effectiveness of the brake in a motorcycle.

Generally, this type of adjustment device adjusts the effectiveness of the brake at the connection point between the brake arm led out from the brake and the operating rod connected to the brake pedal, etc., but when the wheel is removed from the vehicle body, the Since it is removed together with the wheel, the connection points mentioned above must be separated.

However, in the past, in order to disconnect the brake arm from the rod, the adjustment nut had to be loosened and removed, so when the wheel was reattached to the vehicle body, the brake adjustment using the adjustment nut had to be done from the beginning. It had to be redone and was extremely tedious.

This invention has been made to solve the above-mentioned drawbacks, and is intended to provide a brake adjustment device for a motorcycle that can disconnect the brake arm from the rod without the need to operate an adjustment nut.

An embodiment of this invention will be described below based on the drawings.

FIG. 1 shows a rear wheel of a motorcycle with a portion cut away, where 1 is a bub, 2 is a spoke, 3 is a rim, and 4 is a tire.

A brake device (not shown) is provided inside the bubble 1, and one side thereof is closed by a brake plate 5.

This bubble 1 is removably attached via a wheel shaft 8 between left and right brackets (only one shown) 7 welded to left and right rear swing arms (only one shown) 6.

Further, a camshaft 9 is led out from the brake plate 5, and a base end of a brake arm 10 is connected to this camshaft 9.

This brake arm 10 has one end connected to a brake operating rod 11 connected to a brake pedal (not shown).

The connection structure between the brake arm 10 and the rod 11 is shown in detail in FIGS. 2 to 4, and will be explained below based on these.

That is, the brake arm 10 has a bifurcated support portion 12.12 at its tip, and a pin 13 is bridged between these support portions 12.12.

This pin 13 is rotatably attached between the supports 12 and 12 via a collar 14', a washer 15, and a cock pin 16.

A concave groove 17 is formed on the outer peripheral upper surface of the pin 13 so as to intersect with the axial direction thereof, and the rod 11 is slidable in the axial direction within this concave groove 17 and in the opening direction of the concave groove 17, that is. It is inserted removably in the upper direction in the figure.

The rod 11 has a male threaded portion 18 carved into its tip, and is integrally provided with a collar 19 for a spring holder at a position spaced from the end of the notch of the male threaded portion 18 to the right in the drawing.

A plate 20 is fitted into the rod 11 so as to be slidable in the axial direction, with the spring receiver facing the circumferential flange 19. A coil spring 21 is provided in between, and the spring receiver always presses and biases the plate 20 toward the left side in the figure.

This spring receiver has a locking member 22 welded to the plate 20 on the opposite side of the coil spring 21.

The locking member 22 is, for example, a plate bent into a U-shape, and has locking grooves 23 on both end walls serving as a U-shaped locking portion that fits into the outer surface of the pin 13. .23 are formed, and these locking grooves 23.23 fit into the outer surface of the pin 13, since the spring holder is pressed by the spring 21 that engages the plate 20 and the locking member 22. It is removably attached.

Further, on the male threaded portion 18 of the rod 11 facing this locking member 22, an adjustment nut 24 consisting of a butterfly-shaped nut is attached.
is screwed into the adjusting nut 24 so as to be able to move forward and backward, and the tip of the adjusting nut 24 is brought into contact with the pin 13, and the pin 13 is inserted between the locking grooves 23 and 23 of the locking member 22. .

In FIGS. 1 and 5, reference numeral 25 is a suspension arm, and a metal plate 26 for a rod hook is welded to this arm 25.

However, the operation of the embodiment with such a configuration will be explained.

When the brake pedal is depressed, the rod 11 is pulled in the direction of arrow A, so that the brake arm 10 connected to this rod 11 is rotated in the direction of arrow B.

Therefore, since the camshaft 9 is also rotated together in the direction of arrow B, the brake shoe hits the lining (none of which is shown) and braking is performed.

When the brake lining etc. are worn out due to long-term use, braking becomes ineffective unless the brake pedal is depressed with a longer stroke. Therefore, by screwing the adjustment nut 24 in the direction of arrow A, the brake arm 10 is moved in the direction of arrow B. To adjust the rotational displacement so that braking is effective without increasing the depression stroke of the brake pedal.

By the way, when removing the rear wheel from the vehicle body, that is, the bracket 7, the spring holder first pushes the plate 20 in the direction of arrow A against the coil spring 21, and this spring holder is integrally attached to the plate 20. Similarly, the locking member 22 is slid in the direction of arrow A.

Then, the locking groove 23.23 of this locking member 22 is connected to the pin 13.
The outer surface of the connector is uncoupled from the fitting.

Therefore, in this state, if the rod 11 is pushed up in the direction crossing the pin 13, that is, upward in FIG.
The link with 0 is released.

The rod 11 removed in this manner is supported by hooking the receiver provided on the suspension arm 25 onto the metal 26.

If the wheel shaft 8 is pulled out in this state, the wheel can be removed from between the brackets 7.

When the wheel is reattached to the vehicle body, the wheel shaft 8 is passed through the bub 1 inserted between the brackets 7 and fixed, and then the rod 11 is inserted into the recessed groove 17 of the pin 13.

In this case as well, the spring receiver shifts the plate 20 in the direction of arrow A against the coil spring 21, and after the rod 11 is inserted so as to penetrate into the recessed groove 17, the spring receiver stops pressing the plate 20. Then, the locking grooves 23 and 23 of the locking member 22 are fitted into the outer surface of the pin 13.

Then, the rod 11 is fixed via the locking member 22 because the locking grooves 23 and 23 engage the pin 13 with the adjustment nut 24, and the rod 11 can be pulled out from the recessed groove 17 of the pin 13. There is no.

Therefore, there is no risk that the rod 11 and the brake arm 10 will become disconnected even if the vehicle receives vibrations or shocks while driving.

By doing this, there is no need to operate the adjustment nut 24 when removing the rod 11 from the brake arm 10 or when connecting the rod 11 to the brake arm 10, so that the wheel can be reattached to the vehicle body as described above. There is no need to adjust the effectiveness of the brake after installing the brake.

As described in detail above, according to this invention, a concave groove is formed in the pin provided on the brake arm on the wheel side, and the brake operating rod can be freely slid in the axial direction within this concave groove, and the concave groove A locking member that is inserted into and removably in the opening direction and is biased toward the pin by a spring is provided on this rod so as to be slidable in the axial direction, and this locking member is removably engaged with the pin. A locking part is provided to prevent the rod from being pulled out of the concave groove, and the pin is inserted between this locking member and an adjustment nut screwed from the tip of the rod, so that the rod can be locked. By disengaging the part, the rod can be pulled out from the recessed groove, so the rod and brake arm are separated, and if the rod is inserted into the recessed groove and the locking part is engaged with the pin, the rod and brake arm can be separated. It will be connected to the brake arm.

Therefore, when attaching and detaching the rod, the work can be done without operating the adjustment nut at all, so there is no need to re-adjust the brake every time the wheel is attached or detached.Therefore, the task of attaching and detaching the wheel can be done easily and in a short time. It has the advantage of

[Brief explanation of drawings]

The drawings show one embodiment of this invention, in which Fig. 1 is a side view showing the main parts of the rear wheel, Fig. 2 is a sectional view taken along line II-II in Fig. 1, and Fig. 3 is a cross-sectional view in Fig. 4 is a sectional view taken along line II--III, FIG. 4 is a sectional view taken along line Iv--V in FIG. 2, and FIG. 5 is a sectional view taken along line V--■ in FIG. 1...Wheel bubble, 10...Brake arm, 11
...Brake operation rod, 13...pin, 17.
...Concave groove, 18...Male thread part, 20...Spring holder is plate, 21...Coil spring, 22...Locking member, 23
... Attachment groove, 24... Adjustment nut.

Claims (1)

[Scope of utility model registration request] A pin is provided on the brake arm led out from the brake of the wheel, and a recessed groove is formed on the outer peripheral surface of this pin, and a brake operating rod is slidable in the axial direction within this recessed groove, and an opening of the recessed groove is provided. Insert it in the direction so that it can be inserted and removed freely,
A locking member that is biased toward the pin by a spring is provided on the rod so as to be slidable in the axial direction, and the locking member is removably locked on the pin to prevent the rod from coming out of the recessed groove. A brake adjustment for a motorcycle, characterized in that a locking part is provided to prevent the pin from being pulled out, and the pin is inserted between the locking member and an adjustment nut screwed from the tip of the rod. Device.