JPS59212530A - Oil hydraulic multi-lief clutch - Google Patents

Abstract

PURPOSE:To enhance the operating feeling by engaging a clutch spring, to be supported by a clutch center, directly with a clutch lifter plate, and by imparting a friction plate pressing force to a clutch pressure plate. CONSTITUTION:A clutch lifter plate 39 is mounted on a boss 27g formed at a pressure plate 27. This lifter plate 39 is supported by a mounting bolt 40, screw- fitted on said boss 27g, through a sleeve 41 with possibility of relative movement to the above-mentioned pressure plate 27 by a distance corresponding to the clearance h in the axial direction. The periphery is energized outward by a clutch spring 42 to be in engagement with a clutch sensor 24. Also on the boss 27g, a control spring 48 is fitted so as to provide a certain clearance between the pressure plate 27 and lifter plate 39 in the state of clutch being out of engagement.

Description

[Detailed Description of the Invention] This invention provides a hydraulic multi-plate clutch with a hydraulic release mechanism in the clutch itself. It's from Irub.

Conventionally, there is a hydraulic multi-plate clutch as shown in FIG. 1 as a clutch used, for example, in a motorcycle.

This hydraulic multi-disc clutch includes a plurality of friction plates 3 that are provided on a clutch outer 1 so as to be slidable in the axial direction of a main shaft (i.e., transmission) 2, and a clutch center 4 that is provided with a plurality of friction plates 3 that are slidable in the axial direction of a main shaft (i.e., a main shaft) 2. 2111+ A plurality of ff friction plates slidably provided in the IIA direction are arranged alternately, and the clutch pressure brake 1-6 is used to connect the clutch by pressing both the friction plates 3.5.
A hydraulic chamber 7 is formed with a pressure receiving surface 6a perpendicular to the axial direction as a part of the chamber wall, and a hydraulic chamber 7 is formed with a pressure receiving surface 6a perpendicular to the axial direction of the clutch pressure plate 1-0. A hydraulic release mechanism 8 for releasing the hydraulic pressure in the hydraulic chamber 7 is provided on the pressure receiving surface 6a of the pressure plate (hereinafter abbreviated as pressure plate) 6.

As shown in an enlarged view in FIG. 2, this hydraulic release mechanism 8 includes a pressure brake 1-0 and a clutch center
A protruding part 6b is formed to pass through the web part 4a of the main shaft 2, and a roll bin 9 is fitted into the hollow part 6C formed inside the protruding part 6b so as to be slidable in the axial direction of the main shaft 2. 1 - A relief hole 6d is provided in the pressure receiving surface 6a on the same axis as the roll pin 9, and a reed valve 10 that closes the relief hole 6d is attached to the pressure receiving surface 6a, and a discharge hole is roughly connected to the outside from the hollow portion 6C. It is composed of 6e.

The clutch lifter plate 14 is attached to the pressure brake 1-6.As shown in the enlarged view of the main part in FIG. 1 (main seat) 1 (main seat) so that it can be spaced apart in 2 axial directions, and 1. () Plate 16/J'' is fixed via a sleeve 17, and the clutch spring 13 is disposed between the plate 16 and the clutch center 4. In other words, in the conventional case, the clutch spring 13 The clutch lifter plate 14 has a structure in which the clutch pressure plates 1 and 14 are directly biased in the direction of pushing the clutch spring 13, and the clutch lifter plate 14 does not directly receive the force of the clutch spring 13. )X” The law is designed to be free.

In the above-mentioned hydraulic multi-disc clutch, when the clutch is connected, a load is applied to the pressure brake 1-6 by the anti-horn of the clutch spring 13 and the hydraulic pressure in the hydraulic pressure Y7, and the main plates 3 and 5 are applied to the pressure brake 1-6. Shirt [・Axial direction outward (
Hereinafter, it is in a state where it is pushed in this direction (ie, the right side in FIG. 1 is simply referred to as outward, and the opposite direction is referred to as inward).

To disengage the clutch, rotate the lever 11 counterclockwise in FIG.
2 rotates clockwise to move the ramp lifter plate 14, which is urged outward by the clutch spring 13, inward, and pushes the control bin 9 inward, causing the tip of the control bin 9 to lead. Push the valve 10 to open the relief hole 6d. As a result, the oil in the hydraulic chamber 7 is released and the pressure is lowered, creating a half-clutch state in which only the reaction force of the clutch spring 13 acts. Then, after the clamp lifter plate 14 moves to the clearance 11, the clutch lifter brakes 1 to 14 directly push the pressure brake 1-0 inward, completely removing the suppression horns that were applied to the pressure plates 3.5 on both sides. The clutch is released and the clutch is disconnected.

FIG. 4 shows an enlarged view of the vicinity of the takeaway bolt 15 in the clutch disengaged state.

(When operating the clutch, release lever 1
Release the restraint caused by 2. Slipping, clutch lift brake 1~
14 receives the reaction force of the clutch spring 1330 and moves outward together with the breath plates 1~ which move outward. At 1-0, the reaction force of the clutch spring 13 acts as a pusher, and then -1-14 is the gap t on the opposite side and 1 side shown in Figure 4. The control bottle 9 is moved away from the reed valve 10 to close the reed valve 10, and hydraulic pressure is applied to the pressure plate 6.

Considering the above operation, the relationship between the clutch transmission 1~ torque and the clutch operation stroke (the relationship between Shikatsu C, the load on the pressure plate 6 and the clutch operation ('+s1~]-1-ri) is 5 As shown in the diagram, there is C, spring control range 0∆ slope 3 = J l, u oil pressure -1 n 1~
The slope of the roll range ΔB is quite interesting.

By the way, w-II board 3 is created by Blessed Play 1 to G.
．． With this type of clutch that transmits transmission by pressing 5, the magnitude of the load on brake A7 brakes 1 to G (this force (Iwaru■1 hard plate 3.5 is pressed outward in the axial direction) Since the magnitude of the transmitted torque is determined by the amount of torque transmitted, the controllability of clutch operation (
However, as mentioned above, the difference between the slope of OA and the slope of OB in Fig. 5 is large, and the controllability increases before and after the failure point. As there is a significant difference in the
Operation feeling is not good.

This invention was made in order to solve the above-mentioned conventional drawbacks, and it improves the controllability of the clutch connection operation, and provides a hydraulic system that enables smooth latch connection with a good operation feeling. The purpose is to obtain a type multi-disc clutch, and its characteristics are: clutch preset 1, play 1 ~ I! ? i I? , press k.
The clutch spring supported by the clutch center is directly engaged with the clutch lifter brakes 1 to 1 so as to provide the desired speed.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 6, 20 is a main shift shaft 1 to 1, that is, a transmission shaft, and 21 is a driven gear that meshes with a driving fh gear A7 (not shown). The clutch outer 22 is housed in the dolipungi 1721.

The clutch outer 22 has a protruding portion 228 located on the driven gear 21 and is inserted into a circumferentially long elongated hole 21a so as to be rotatable relative to the driven gear A721 by a slight angle. It is coupled to driven=tr j721 via M'f'ks.

A clutch center 24 is fixed to the main shafts 17 Nos. 1 to 20, and the clutch outer 22 is connected to the main shaft 20 in the direction of the lll1ll line.
(abbreviated as "line direction") is provided so that 1 movement is possible. , : A 1-thickness plate 25 and a friction plate 26, which is also provided on the clutch center 24 in the same manner as 1-thickness, are arranged at the intersection H, and the above-mentioned IIL friction plate sign.

A clutch pressure plate 27 for connecting the clutch by pressing the clutch pressure plate 27 is fitted into the boss portion 24a of the clutch center 24 via an O-ring 28 so as to be able to slide in an oil-tight manner in the axial direction. In addition, this clutch preflex 1ν play-1 (hereinafter referred to as pressure plate) 27
is a pressure receiving surface portion 27a having a surface perpendicular to the axial direction.
and has a cylindrical portion 27b.

Main shaft 29-G;- is clutch outer 22
A clutch piston 29 is fitted between the clutch screws 1 to 24, and the outer peripheral parts of the clutch screws 1 to 29 are connected to the inner peripheral surface of the cylindrical part 27b of the pressure plate 1 via an O-ring 30. are in oil-tight and slidable contact with each other. In this way, the boss portion 24a of the clutch center 24 and the pressure receiving surface portions 2 of the preflex 1z brakes 1 to 27
7a and the inner surface of the cylindrical portion 27b and the clutch piston 2
9 forms a hydraulic chamber 31.

The main cylinder V71-20 is hollow, and a feed pipe 32 is inserted into the hollow portion 20a, and a communication passage 33 is provided for sending hydraulic pressure sent from the feed pipe 32 to the hydraulic chamber 31. There is. d3, one end of the feed pipe 32 is supported on the inner surface of the hollow part of the main cylinder 17 through the shaft sealing metal 50, and the other end is attached to the crankshaft 3/'l (= J-shaped base 35). It is connected via the A-replacement 36.

In the pressure play 1 to 27, as shown in the enlarged view of the main part in FIG.
A protrusion 27C is formed that passes through the hole 24C drilled in the hole 24C, and the pins 37 are fitted into the hollow part 27d formed inside the protrusion 27C so as to be slidable in the axial direction. 8 This 11th point [l-silvin 3f tip 37
a T,, i Pressure receiving surface part 2 of the bulletin plate 1-27
7a [Iυ in the through hole 2711; the thickness includes the middle part 371] ni l: +l+wa, 艷'f'', I
I 27 d Thickness and fin with space between, rear 3
7c is a hole that fits into the intermediate portion 27d. The control bin 37 is installed in the pressure plate lifter plate 39 (1), which will be described later. A reed valve 38 for closing the relief hole 27C is attached to the pressure receiving surface 27a, and a discharge hole 27f is provided at the tip of the protrusion 27c. 24b is provided with a communication hole 24d.The reed valve 38, the hollow portion 27d of the relief hole 27C1, the control bin 37, the discharge hole 27f, and the communication hole 24d constitute a hydraulic release mechanism.

A clutch lifter plate 39 is attached to another protrusion 27g provided on the pressure plate 27, as shown in the enlarged view of the main part in FIG. These three clutch lifter plates (hereinafter referred to as lifter plates 1, omitted) are connected to the sleeve 4 by the lever 40 screwed onto the protrusion 27o.
1, the clearance 1) is supported so as to be movable relative to the pressure plate 27 in the axial direction. (to the right in the figure). That is, in the present invention, the inner peripheral edge of the clutch spring 42 is connected to the lifter plate 3.
The three lifter plates are disposed so as to be in contact with the outer peripheral edge of 9 to urge the three lifter plates in the direction of 11j (long press).

A control spring 18 is fitted into the protruding portion 27g of the pressure plate 27, so that when the clutch is disengaged, the relationship between the press plate 27 and the lifter plate 39 is maintained at a constant clearance. 1, 2” control spring 48
are Breathi I Nobrate 27 and Lifter Play 1-39.
By determining the positional relationship between the two points, the shift of the point i at the start of clutch engagement is eliminated, and the dragging torque at the time of clutch engagement is avoided.
There is.

Further, at the end of the main shaft 20, a collar portion 43a is attached to the lifter plates 1 to 37;
The guide shaft part '1311 is in contact with the main shift shaft 2.
A lifter piece 43 is provided in the hollow portion 20a of 0 in the axial direction, with one movement per one movement. On the other hand, a cam shaft 46 that is orthogonal to the main shaft 0 is rotatably supported by the clutch cover 45, and this cam l1il1146
The lifter piece 4 is attached to a cam 46a formed on the outer periphery of the lifter piece 4.
The end faces of No. 3 are in contact with each other.

An arm 47 is fixed to the lower end of the camshaft 46, and a clutch wire (not shown) is connected to the tip 47a of the arm 47.

Next, the operation will be explained.

In the clutch connected state, the lifter plate 1-39 is urged outward by the clutch spring 42, and the
The roll bin 37 is kept separated from the reed valve 38'hs, and the reed valve 38 closes the escape hole 2ae. Therefore, the hydraulic pressure supplied into the hydraulic chamber 31 via the mail pump J (not shown) through the refeed pipe 32 is maintained at a high pressure (J), and +U is applied to the pressure receiving surface 27a of the brake plate 27 toward the outer valve J in the axial direction. ], the pressure play 1-27 presses the first detection plates 25 and 26 both times, creating a high blood pressure between the two vibration plates 25 and 26, and connects the clutch. In this case, the force of the clutch spring 42 is also applied to the friction plate pressing of the pressure plays 1 to 27 as a force, which affects the clutch connection. In this way, the drive gear meshing with the drive gear (not shown) is caused by the clutch outer 22, the friction plates 25, 26, and the clutch center 2.
After passing through 4, I was informed that the main car was V7T-20L.

To disengage the clutch, operate the no-torage lever (not shown) to release the clutch. M) The camshaft 4 integrated with the arm 47 that rotates through the clutch cable.
6, rotate this camshaft A 6 (7) No. J surface 4
At 6a, lifter piece/I3 1. Jilt the ii 1st page
j, this lifter piece 43 is moved inward in the direction of the Ij+il+ line force. Therefore, lifter plays 1-39
is pushed by the first tape piece 43 and moves inward against the reaction force of the clutch spring 42. in this case,
1 nofter plate 39 is in state b) 114j of FIG.
Move the lever and place it on the outer end of the sleeve 41, away from the washer 1749, and then press the press lever 1-2.
Release the force of the clutch spring 42 that was acting on the controller 1 through the roll pin 37, and then push the node valve 38 inward from the hydraulic chamber 31 through the release hole 27.
Open e. Gakatsu(, Oil J: F '5' 31
The oil flows into the hollow part 27d from the relief hole 27e and is discharged from the discharge hole 27 [near the outer end of the hollow part 27d, so that the pressure in the hydraulic chamber 31 is released.

Therefore, the pressure plate 27 is pushed by hydraulic pressure =
J (Puka is also released and the clutch connection is disconnected.

In this state of clutch disengagement, pressure play 1-27
is the force biased leftward against the lifter plate 39 by the control spring 48 and the force exerted by the reed valve 3
8 is open, but in a position where the force pushed to the right by the slight pressure horn remaining in the hydraulic pressure unit 31 is balanced, that is, there is a small clearance h as shown in Fig. 9.
’ remains stable. In this manner, the control spring 48 establishes the positional relationship between the pressure plate 27 and the three lifter plates when the clutch is disengaged, thereby eliminating any misalignment of the points during the clutch engagement operation.

When reconnecting the clutch from the clutch disengaged state shown in FIG. J
, outside) ° or while moving by the gap t' on the side of the socket A and 49 arranged at the outer end of the sleeve 41, close the relief hole 27c of the valve 38C and close the hydraulic air 3.
Pressure is built up inside 1, and an oil force is applied to the plate 27 of the prefix 11. After the lifter plate 1/39 moves by the gap t' and contacts the washer 49,
The force by the clutch spring 42 is applied to the brake v-, i rate 27, and the hydraulic force pushes I.1 (pressure and push by the clutch spring 42=J force).

Judging from the above operations, the relationship between the transmission 1 herc and the latch operation stroke is the 10th F! J, the initial stage OA of the operating stroke is the hydraulic pressure range 21 to 1, and the later stage △B is the hydraulic pressure range from 2 to 1. Normally, the load due to hydraulic pressure is set to be sufficiently larger than the load due to the clutch spring 42, so in this embodiment, the distance b (, L, shown in Fig. 1O) is set in this way. The gradient of the oil pressure control range OA is as follows.
[1 - greater than the slope of the range OA. Therefore, the first
In Fig. 0, the difference in slope between OA and OB is smaller than the difference in slope between OA and OB in the conventional Fig. It is easy to adjust the transmitted i-lux, the clutch connection is performed smoothly, and the operation feeling is also good.

Contrary to the example, if the load by the clutch spring 42 is set larger than the load by the hydraulic pressure, the gradient of the spring control range OA in the conventional structure shown in FIG. The gradient of hydraulic control 1 to roll flU[l]OA in the structure of the invention is greater than that of the hydraulic controller 1 to roll flU[l]OA, and the transmission 1 to lux 1 operation stroke characteristics are reversed.

Therefore, the clutch spring/! Depending on the magnitude of the load due to 2 and the load due to hydraulic pressure, if the former is large, the conventional structure is selected, and if the latter is large, the structure of the present invention is selected.

As explained above, according to the present invention, the Kurasochi spring directly engages with the clutch lifter brake 1 to directly shift the clutch lifter brake 1 to I? 'l? The plate pressing force is applied in the direction J:C, and the load for clutch connection acting on the clutch pressure brake 1~ is at the beginning of the clutch operation 11~. The control characteristic is controlled by the hydraulic pressure, and in the later stage, when a load is added to the hydraulic pressure, the control characteristic is controlled by the clutch spring. In the case of the normal setting method, the oil control [1-
Before and after switching between the clutch control range and the clutch control range, it is possible to reduce the difference in controllability by d'3. It becomes easier, the clamp connection is smoothly connected, and the operation feeling is good.1

[Brief explanation of the drawing]

Figures 1 to 5 show conventional examples. Figure 1 is a sectional view of a hydraulic multi-disc clutch, Figure 2 is an enlarged view of the hydraulic release mechanism section J3 in Figure 1, and Figure 3. is an enlarged view of the part where the clutch lifter plate is removed at d5 in Fig. 1, Fig. 4 is an enlarged view of the part where the clutch lifter plate is attached to the clutch lifter plate 1 in the clutch disengaged state, and Fig. 5 is an enlarged view of the clutch lifter plate 1 to low-cool transmission torque characteristics in the clutch disengaged state. 6 and 6 show an embodiment of the present invention. FIG. 6 is a sectional view of a hydraulic multi-disc clutch, FIG. 7 is an enlarged view of the hydraulic release mechanism shown in FIG. 6, and FIG. Figure 8 is an enlarged view of the clutch lifter plate installation in Figure 6, and Figure 9 is the clutch lifter plate installation (l+) in the clutch disengaged state.
FIG. 10 is an enlarged view of the section, and FIG. 10 is an operation stroke-transmission 1 to torque characteristic diagram. 20... Main shaft 17 fl- (transmission shaft), 22
... Clap outer, 24 ... Clutch center, 25° 26 ... I information board, 27 ...
...Clutch pressure brake 1~. 27a...
... Pressure receiving surface part, 27e ... Hollow part, 270.
...Escape hole, 27 holes...Ejection hole, 27
(1...protrusion, 31...hydraulic chamber, 3
7... Conmil roll bottle, 38...
Reed valve, 39...Clutch lifter play 1~. 40...Tori (qL Pubol 1~.41...
... Sleeve, 42 ... Kuratu J-Sublink, 43 ... Lifter piece, 46 ...
・Cam shaft. Applicant: Honda Motor Co., Ltd.

Claims (1)

[Claims] a clutch outer including friction plates slidable in the axial direction of the transmission shaft; a clutch center including friction plates arranged alternately with the W-plates also slidable in the axial direction of the transmission shaft;
A latch pressure V plate that is slidable in the axial direction of the transmission shaft for pressing the two friction plates to connect the clutch, and a pressure receiving surface portion of the clutch pressure plate having a surface perpendicular to the axial direction of the transmission shaft are attached to the chamber wall. a clutch lifter plate attached to the clutch brake 1 knob plate so as to have a constant clearance with respect to the clutch brake 11 play 1 and to be able to be separated from each other in the axial direction of the transmission shaft; a clutch spring supported by the clutch center so as to bias the friction plate in the direction of pressing the friction plate; Tori (=J
In a hydraulic multi-disc clutch equipped with a hydraulic release mechanism that releases the pressure in the hydraulic chamber by opening a reed valve provided on the pressure receiving surface of the clutch pressure plate using a control bin that has been opened, the clutch spring is connected to the clutch lifter plate. The hydraulic multi-plate clutch is characterized in that it is arranged so as to directly engage with the clamp lifter plate and directly push the friction plate and force it in the downward direction.