JPS632387Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a brake device in which the brakes of a motorcycle can be operated independently by both a pedal and a brake lever on a handlebar.

A brake device in which the rear brakes of a motorcycle can be operated independently and individually by foot operation using a pedal and manual operation using a brake lever on a handlebar is known from Utility Model Publication No. 49-29897.

In this prior art, two plates are arranged axially apart on the spindle of the brake pedal, one of which is connected to the brake rod so that it can be freely engaged with and detached from the brake pedal, and the other plate is connected to the brake rod. This is connected to the brake lever on the handle side by a wire so that it can be freely engaged and disengaged from the brake lever.By operating the pedal, this is engaged with one plate using pins and protrusions, and rotational force is transmitted to the plate, and the brake lever is also connected to the brake lever. When operated, the other plate is rotated, and this is transmitted to one plate using a pin, so that the operating force of the hands and feet is transmitted individually to the brakes.

In the above conventional technology, the operating force of each of the pedals and brake levers acts on the left and right sides of one of the plates, and a biased operating load acts on the input member for operating the brake rod, and the plates are arranged in the axial direction. The amount of lateral protrusion becomes large, and there is room for improvement, contrary to the desire to reduce the width as much as possible.

The present invention has been developed in view of the above, and its purpose is to provide an arm portion protruding outward in the circumferential direction of the shaft support base of the brake pedal, and to provide left and right side pieces into which the arm portion is inserted, and The left and right side pieces each have an extending hanging piece that hangs downwardly at the rear, a front piece that connects the front lower part of the left and right side pieces, and a window that opens forward above the front piece. A transmission arm consisting of a top piece connecting the left and right side pieces is provided, and a mounting hole is formed at the upper part of the left and right side pieces of the transmission arm to pivotally attach a pin portion at the tip of the brake rod, and a mounting hole is formed in the upper part of the left and right side pieces of the transmission arm, and a mounting hole is formed in the extending hanging piece. forms a vertically elongated play hole, inserts the arm portion of the brake pedal between the left and right side pieces of the transmission arm, and pivots the arm portion at approximately the center of the left and right side pieces when viewed from the side; , the end of the input cable is slidably engaged in the play hole of the transmission arm, and independent operation is possible using both the brake pedal and the brake lever, and the above is applied to the operation force to the transmission arm. It is an object of the present invention to provide a brake device capable of achieving accurate transmission and being as compact as possible in the width direction.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a side view of a motorcycle 1, in which a front fork 4 supporting a front wheel 5 is supported in a freely steerable manner via a head tube 3 at the front end of a frame 2.
A handlebar 7 is mounted on the top bridge 6, a fuel tank 8 is mounted on the upper front part of the frame 2, and an engine 9 is mounted below this, and a rear fork 11 supports a rear wheel 10 rearward from the lower part of the rear part of the frame.
A rear action unit 12 is interposed between the frame 2 and the rear fork 11, and the rear action unit 12 is of a single type in the embodiment. L-shaped link plate 13
A seat 15 is provided on a seat rail 14 extending rearward from the rear upper part of the frame 2.

In the above, the bracket 16 of the rear fork 11 is extended below the pivot portion 11a, and the boss portion 1 is attached to the extending portion 16a of the bracket 16 as shown in FIG.
7 is provided, and a boss portion 18a of a foot brake pedal 18 is pivotally attached to this via a support shaft 32 through a mounting hole 18b provided therein. A foot pedal section 18 is provided at the tip of the brake pedal arm 18c.
d is provided, and arm 1 is activated by stepping on the pedal portion 18d.
8c is swung about the shaft 32 as a fulcrum, and the arm 1
Return spring 2 is inserted between the base of 8c and bracket 16.
0, and the return swing is performed after the foot brake is released.

A connecting arm 19 is integrally provided on a boss portion 18a at the base of the brake pedal 18, and a forward protruding portion 19a is provided at the tip of the arm 19. An intermediate brake arm 2 is provided at the middle or upper part of the arm 19.
The base of the arm 21 is pivotally connected by a pin 22, and the arm 21 has a bifurcated shape as shown in FIG.
It is provided with left and right side pieces 21a, 21a, a front piece 21b connecting the front ends thereof, and a top piece 21c connecting the upper ends thereof, and a window 21d opened forward in the middle or upper part of the front piece 21b. Furthermore, side pieces 21a, 21a
The rear part is provided with an extending hanging piece 21e that hangs downward, and the side pieces 21a, 21a have mounting holes 21f on the upper part.
In addition, a mounting hole 21g is provided in the lower part, and a vertically long locking hole 21h is provided in the extending hanging piece 21e.

The side piece 21a of the above intermediate brake arm 21,
The connecting arm 19 is sandwiched between the connecting arms 21a, the mounting hole 19b provided at the lower part of the connecting arm 19 and the mounting hole 21g are aligned, and both are pivotally connected via the pin 22, so that the protrusion 19a of the connecting arm 19 faces the window 21d. . A projecting piece 18 extending diagonally rearward and downward from the rear of the pivot portion 22 of the intermediate brake arm 21 and the brake pedal boss portion 18a.
e is connected to the set spring 23, and the pin portion 25 at the tip of the brake rod 24 is rotatably pivoted between the mounting hole 21f provided at the upper side of the intermediate brake arm 21, and the rod 24 is provided on the brake panel 26. Connected to the final brake arm 27, the brake panel 26 is connected to the rear fork 11 by a restraining link 28.

A brake lever 29 is swingably provided in front of the grip portion 7a of the handle 7 via a bracket 29a, and the brake lever 29 is connected to an inner 30a of a brake cable 30, and the inner 30a is slidable inside the outer 30b. The downstream end of this is led out from the outer 30b and connected to the pin 31, and the pin 31 is slidably engaged between the locking holes 21h of the hanging pieces 21e and 21e within the range of the elongated hole.

Next, to explain the operation and effect in detail, when the pedal 18d of the brake pedal 18 is depressed, the arm 18c swings clockwise in FIG. The connecting arm 19, which is integral with the main body, swings in the same direction. Arm 1
9 is pivotally connected to the base of the intermediate brake arm 21 by a pin 22, so it is moved in the same direction, and the arm 21 is pivotally connected to the base of the intermediate brake arm 21 by a pin 22, but the front piece 21
The protrusion 19a at the tip of the arm protrudes from the window 21d above b, and its lower front edge 19c comes into contact with the rear surface of the front piece 21b, so that from this point on, the arm 21 swings integrally with the linking arm 19 in the same direction. The brake rod 24 is pulled, the final brake arm 27 is swung, the brake shoe (not shown) in the brake panel 26 is expanded, and the shoe is pressed against the brake drum 33 to effect braking.

By the way, although the intermediate brake arm 21 swings, the engagement hole 21 h is engaged with the engagement hole 21h and the pin 31.
The h side, that is, the arm 21 side, slides against the pin 31, and the pin 31, that is, the cable 30, is left behind.
Braking operations are performed while being insulated from the system of the manual brake lever 29.

On the other hand, when the brake lever 29 is grasped by hand, it swings in the direction of the grip, and the cable inner 30a is pulled, and the pin 31 of this is pulled into the engagement hole 21.
h, but is locked at the end of this, lifting the intermediate brake arm 21 upwards, and the arm 21
swings clockwise in FIG. 2 using the pin 22 as a fulcrum, pulls the rod 24, and performs braking in the same manner as described above, and this braking operation is performed separately from the foot brake pedal system. The Rukoto.

In this way, braking operations and braking actions are performed separately with the hands and feet, and since the hands and feet can be operated separately and the braking action is performed separately, it is necessary to grasp the brake lever on the handlebar side and operate the motorcycle. The brake is fixed and can be used as a parking brake.

6 to 9 show a second embodiment, and since the basic structure is the same as that described above, the same parts are given the same reference numerals, and new numbers are given to the same parts.

The intermediate brake arm 121 is formed by punching a single pressed steel plate, and the plate material is expanded so as to be continuous at the front piece 121h at the middle part of the front end, and then bent at this part, and the upper parts 121a' of the left and right side pieces 121a, 121a are formed. bulge inward and overlap and join together, and the lower part 121a'' that hangs down at the rear is joined in the same way, and the attachment hole 121f for the brake rod 30 is made in the upper part, and the attachment hole for the connecting arm 19 in the middle part. 121g, and a locking hole 121h was formed in the lower part.

According to this embodiment, the intermediate brake arm can be manufactured easily, and its thickness in the width direction can be made as thin as possible.

As is clear from the above, according to the present invention, braking operations can be performed separately with the hands and feet, and the braking action can be obtained separately. Since the arm is actuated, no torsional force is applied to the transmission members for each swing and operating force, and the braking operating force can be transmitted smoothly and reliably to the brake rod, etc. Since the above-mentioned components can be accommodated within the width of , the amount of outward protrusion from the frame can be made as small as possible, which is advantageous in this respect as well, and furthermore, the structure is simple and has many other advantages.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic side view of a motorcycle, Fig. 2 is an explanatory diagram of a brake device, and Figs. 4-4 line sectional view, FIG. 5 is an exploded perspective view of the main parts, FIG. 6 is a perspective view of the second embodiment, FIG. 7 is a side view, FIG. 8 is a front view, and FIG. It is a rear view of the same. In the drawing, 18 is a brake pedal, 19 is an arm part, 21 and 121 are transmission arms, 24 is an input member, 21h is a play part, 29 is a brake lever, 3
0 is the cable.

Claims (1)

[Scope of utility model registration request] An arm part is provided circumferentially outwardly protruding from the shaft support base of the brake pedal, left and right side pieces into which the arm parts are inserted, and extending hanging pieces that are respectively provided on the left and right side pieces and hang down from the rear. , a transmission arm is provided, comprising a front piece that connects the lower front surfaces of the left and right side pieces, and a top piece that forms a window that opens forward above the front piece and connects the left and right side pieces; A mounting hole is formed in the upper part of the left and right side pieces of the transmission arm for pivotally mounting the pin part at the tip of the brake rod, and a vertically elongated play hole is formed in the extending hanging piece. The arm portion of the brake pedal is inserted between the arms, and the arm portion is pivotally connected at substantially the center of the left and right side pieces when viewed from the side, and the input cable is slidably inserted into the play hole of the transmission arm. A brake device for a motorcycle, etc., characterized in that its ends are engaged.