JPS58149878A - Regulator for operating wire in brake operating device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that can automatically adjust the extension θ of an operating wire in a brake operating device for a motorcycle or the like by K11m.

Generally, in motorcycles, etc., brake operating levers are connected between brake devices and the operating force of the brake operating lever is transmitted to the brake device. This is undesirable because the idle stroke of the operating wire increases due to the excessive extension of the brake, which may change the feel of the brake operation to some extent.

Therefore, the present invention provides an operating wire adjusting device K that detects the stroke of the inner wire and rotates the adjuster lever by feeding and rotating the adjuster to feed out the adjuster to substantially lengthen the length of the book wire. To provide a device which can reduce the operating range 8 of an adjustment lever to reduce long-term loss, and can also reliably prevent over-adjustment F.

To explain one embodiment shown below, the motorcycle 1
An operation lever 3 rotatably provided on the steering handle 2 of the
The operating wire 7 that connects the operating lever 6 of the brake device 5 of the rear wheel 4 is composed of an outer wire 8 and inner wires 9 and K inserted through the outer wire 8, as usual.

An automatic adjusting device 10 for adjusting the idle stroke of the operating lever 3, that is, the elongation of the inner wire 9, is interposed in the middle of the operating wire 7.

Next, the structure of this 1+1 IJI device 10 will be explained.
As shown in FIG. 1, a two-part housing 11 is sand-thrown at a suitable location on a motorcycle 1. This housing 11 is connected to the end of the outer wire 8 on the operating lever 3 side so as to constitute a part of the operating wire 7, and the inner wire 9 passes vertically through the housing 11.

An adjustment bolt 12 is loosely inserted into the housing 11 from one end (the right end in FIGS. 2 and 3) in the axial direction, and a wire 9 is connected to the adjustment bolt 12.
is inserted, and the end of the outer wire 8 of the brake device 5 is fixed to the outer end of the outer wire 8 of the brake device 5.
It cannot be rotated.

Also, in the housing 11, the adjustment pole) 12
It is inserted into the tf cylindrical adjuster 13, and the male thread 12 & of the adjuster 12 is connected to the female thread 131 of the adjuster 13.
Both ends of the adjuster 130 are rotatably supported by a bearing portion 14 formed within the housing 11 and an ISK.

A ratchet wheel 16 is integrally provided in the middle of the adjuster 13 for rotating the adjuster 13 in one direction to extend the adjustment bolt 12.

A U-shaped claw piece 11 is fixed inside the housing 11, and the tip of this claw piece 17 engages with the ratchet teeth 16a of the ratchet wheel 16 to prevent the ratchet wheel from rotating 160 times in the clockwise direction in FIG. are doing. A disc spring 20 is interposed between one side 18 of the bearing portion 14 of the housing 11 and one side of the ratchet wheel 16 via a catch 19. 13 to the right in FIGS. 1 and 3, and the bearing 1s1
A gap δ□ is formed between one side 18 of the ratchet wheel 18 and one side of the ratchet wheel 16. Also, inside the housing 11,
The adjuster 13 is the disc spring 20 in Figures 1 to q.
An adjuster receiving portion 21 is formed, which is brought into contact with the ratchet wheel 16 and its rotation is stopped when the ratchet wheel 16 moves to the left against the above-mentioned gap δ1.

An adjustment lever 22 is pivotally supported within the housing 11 by a pin 23 close to the adjuster 13.

This adjustment lever 22 has a first lever 22 and a receiving piece 24 that faces an actuator 30, which will be described later, and a second check wheel 16 when the adjustment lever 22 is rotated.
It is divided into a second colleper <-22b having a ratchet F melon s25 that engages with the ratchet F teeth 16a of
) is engaged with the adjustment lever bin 2T provided in the first.
'a'th Leno (1 22a, 22b1MHC) Normally, both levers 22&, 22b rotate together, and the adjustment lever 22 is large.

As shown in FIG. 7, when a force is applied, the adjustment lever spring 28 is attached so that the first lever 22a can escape along the long groove 26, and both levers 221t22t)
is configured. Further, the other end of a return spring 29, one end of which is locked to the housing 11, is attached to the second lever 22b, and due to this tensile force, the adjustment lever 22t rotates counterclockwise in Figures C and Q. to bias it in such a way. The spring force of this return spring 29 is set to be weaker than that of the adjustment lever spring 28.

Further, an actuator 30 is fixed to the inner wire 8 of the operating wire 7 in the housing 11, and a dose line δ□ is formed, and when the inner wire 9 is towed and moved to the left in FIG.
It is designed to be able to rotate clockwise in FIG. 1 against the tensile force of 9. Further, the inner end surface 30b of the actuator 30 faces the inner end surface 12b of the adjustment bolt 12 so as to be able to engage with the inner end surface 12b.

The space between both ends of the housing 11 and the outer wire 8 is covered by boots 31, 32.

Next, to explain the operation of this embodiment, in order to apply braking to the brake device 5, when the operating lever 3tIiii is operated and the inner wire 9 of the operating wire 7 is pulled to the right in Figs. 1 and 3, the normal Braking can be applied by operating the brake device 115 (-6) as shown in FIG.

When the idle stroke amount of the operating wire 1 is appropriate, the inner wire 9 is moved as shown in Fig. 1 by operating the brake.
When pulled to the left in FIG.
When the first lever 22a'i rotates clockwise in FIG. 1, the spring force of the adjustment lever spring 28 is greater than that of the return spring 29, ) also rotates, and even if the ratchet pawl portion 25 moves forward, the ratchet of the ratchet wheel 16 is within the pitch of the teeth 16a, so no adjustment is made to the elongation of the inner wire 9.

As the brakes are repeatedly operated, the amount of free stroke during brake operation gradually increases due to elongation of the inner wire 9 (elongation of the inch wire itself and wear of the blade dP9). When it becomes larger, when the adjustment lever 22 is rotated via the actuator 30t by the pull of the inner wire 9, the ratchet pawl portion 25 of the first collever 22b moves clockwise in FIG. Since the ratchet wheel 16 is rotated for more than 1 minute, it engages with the 2-chatch tooth 1Sa and rotates the ratchet wheel 16/
The adjuster 13 is rotated by the pitch, and the adjuster 13 is also rotated by the same amount in the same direction to adjust the idle stroke amount due to the elongation of the inner wire 9. When the brake operation is released, the adjustment lever 22 returns to its original position by the biasing force of the return spring 29.

When the adjustment lever 22 is rotated by pulling the inner wire 9, the amount of movement of the ratchet pawl 25 is equal to the amount of movement of the ratchet wheel 16) 116a/
As long as the pitch is longer than the pitch, the above adjustment is repeated to make the idle stroke amount of the inner wire 9 appropriate.

By the way, even though the idle stroke amount of the operating wire 7 is appropriate, if the brake operation input is too large and the inner wire 9 is forcibly pulled, the operating wire 7
However, this over-adjustment is prevented by the following action.

When the inner wire 9 of the operation wire T is pulled to the left with a force greater than the normal brake operation input, the inner wire 9 is strongly tensed, and the outer wire 8Fi is subjected to the compressive force in its longitudinal direction, causing its connection. When the spring 2G (the spring force is set so as not to be compressed by the normal brake operation input) is compressed, the pressure is lost and it comes into contact with the ratchet wheel 16Fi adjuster receiver 21, increasing the rotational friction, and the adjuster is does not rotate,
The first lever 22a rotates against the adjustment lever spring 28 so as to escape along the long groove 26 as shown in FIG. q, and no adjustment is made. Furthermore, even if adjustable elongation occurs in the inner wire 8, the lock stroke of the adjuster 13 will be larger than the 7 pitches of the ratchet *16a,
By rotating the lever 220, the third collever 22b
At a position where the ratchet claw portion 25 engages with the ratchet tooth 1BaK and the ratchet wheel 22 is slightly rotated, it abuts against the adjuster receiving portion 21 of the ratchet wheel 16, and the adjuster 13Fi is locked. Then, when the brake operation is released, the ratchet pawl portion 25 of the second colleper 22a has rotated a little to the teeth in front of the ratchet teeth 1651, so the ratchet pawl portion 25 falls to the teeth in front of the ratchet teeth 1651, and the next time the brake is applied, the ratchet wheel 16 is The adjusting gilt 12 is fed out and the length of the actuator wire 8 is extended to adjust the idle stroke of the brake. By repeating this process, when the amount of play is adjusted to an appropriate level, the ratchet pawl 25 will no longer fall onto the ratchet teeth 16a.
i Stop. Naturally, over-adjustment is also prevented in this case.

As shown in IjI#1 and above, the adjustment lever that adjusts the play stroke of the operating wire by the feed shear adjustment is divided into parts, and the adjustment lever spring can normally be used as a single unit.If excessive force is applied, one side can be used. Since only the lever can be rotated, the operating range of the adjustment lever can be adjusted to a small extent, the play stroke can be adjusted with little input loss, and over-adjustment can be reliably prevented.

[Brief explanation of drawings]

Figure 1 is a front view of a motorcycle in which the device of the present invention is assembled, Figure 3 is a front view of the device of the present invention, Figure 3 is a cross section of Figure 1 of the company, and Figure 3 shows the main parts during over-adjustment. FIG. 7 is a positive threshold diagram showing the relationship between the tllFi adjuster lever and the ratchet wheel. 3 buzzing operation lever, 6 operating lever, 7 operating wire, 8
is outer wire, 9 is inner wire, 10 is automatic 11!
I device, 11 is the housing, 12 adjustment bolts,
13 is an adjuster, 14.15 is a bearing part, 16Jd ratchet wheel, 16a is a ratchet tooth, 19 is a catch seat,
2o disc spring, 211d7 gear xl receiver, 21 is adjustment lever, 2Zaa first lever, 22b is lever, 23 is pin, 24 is receiver piece, 25 is ratent claw part, 2
6 long levers, 27 adjustment lever pins, 28 adjustment lever springs, 29 return springs, 30
is an actuator.

Claims (1)

[Claims] 1. In an operation wire adjustment device that changes the relative length of the inner wire and the actuator wire by rotating the shear adjuster to feed the adjustment lever by 11kK and rotating the adjustment lever by detecting the stroke of the inner wire, the adjustment lever is rotated. The first lever is divided into a first lever having a receiving piece for detecting the stroke of the inner wire, and a second lever having a 2-chat sf that engages with 2-chat teeth of a ratchet wheel integrally formed with the adjuster. The adjustment lever spring provided on the formed long groove K11l colleper is engaged, and the adjustment lever spring, which has more bias than the return spring of the adjustment lever suspended between the first colleper and the housing, is normally attached to the first. When the first colleper rotates integrally and a large force is applied to the adjustment lever, the first lever can escape along the long groove. A disc spring is attached to the third lever connection, and a disc spring is inserted between the ratchet wheel and the housing to bias the adjuster in the axial direction to form a stopper connection, and to eliminate the stopper gap when an excessive input is applied. An operating wire adjusting device for a brake operating device, characterized in that a receiving portion for locking an adjuster is formed in a housing.