JPH0668307B2 - Anti-rotation structure for wet multi-plate clutch - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet multi-plate clutch for intermittently activating power, and more specifically, a driven shaft and a clutch operating member arranged in a moving core shape swinging on a case. A freely supported fork is configured to enable shift operation against the biasing force of the clutch, and a braking member that comes into contact with the driven side rotating member in conjunction with the shift operation of the clutch operating member in the clutch disengagement direction. The present invention relates to an anti-rotation structure for a wet multi-plate clutch supported by the clutch operating member.

[Conventional technology]

Conventionally, as an example of a rotation prevention structure for a wet multi-plate clutch having the above-described configuration, as shown in Japanese Utility Model Publication No. 62-86421, a control member for pressing and urging the driven side rotating member is directly attached to the clutch case. Techniques for engaging are known.

[Problems to be Solved by the Invention]

The wet multi-plate clutch is more durable than the dry single-plate clutch, but because it is immersed in oil for cooling and lubrication, the friction plate on the driven side is driven by the viscosity of the oil when the clutch is disengaged. There is a drawback in that a phenomenon of being dragged by the friction plate on the side, that is, so-called turning around, easily occurs.

The above-mentioned conventional technology is to prevent this entrainment, but since the braking member directly engages the outer circumference of the braking member to prevent rotation, the braking member has a large diameter and the cost of parts is increased. I was invited. Further, since the engaging portion for the braking member is formed on the inner surface of the clutch case, there are problems that the case shape becomes complicated and that the engaging portion needs to be machined.

The present invention aims to remedy the above drawbacks.

[Means for Solving the Problems]

In order to achieve the above object, the present invention is configured so that a clutch operating member arranged concentrically with a driven shaft can be shifted by a fork swingably supported by a case against a biasing force applied to the clutch. Along with the shift operation of the clutch operating member in the clutch disengagement direction, a braking mechanism is provided which causes the braking member supported by the clutch operating member and the driven side rotating member to come into contact with each other via the elastic portion. It is characterized in that it is engaged with the fork in a non-rotating state.

[Work]

According to the above characteristic structure, since the braking member cannot rotate due to the engagement with the fork, the driven rotating member in the clutch disengaged state which is biased by the braking member is brought into contact with the braking member. It will prevent you from going around. That is, since the originally existing fork is used to prevent the rotation of the braking member that is required to prevent accompanying rotation, a dedicated rotation preventing member is not required, and a braking member is provided in the clutch case as in the conventional case. No need to engage.

Further, since the braking member and the driven-side rotating member are in contact with each other via the elastic portion, braking can be performed with less shock even when the clutch is suddenly operated, and the braking member and the driven-rotating member can be slightly hit. Even if the error occurs, it will be absorbed by the deformation of the elastic portion, so that even if the contact surface is worn, the entrainment preventing effect can be stably exhibited.

〔The invention's effect〕

As a result, since the brake member can be prevented from rotating without any other component, and further, it is not necessary to engage with the clutch case, it is possible to stably exert a braking force for the accompanying structure in which the diameter of the brake member can be reduced. At the same time, the clutch case shape and the processing can be simplified while being provided.

〔Example〕

Hereinafter, an embodiment of a follow-up prevention structure for a wet multi-plate clutch according to the present invention will be described with reference to the drawings.

As shown in FIG. 1 and FIG. 3, a drum-shaped drive-side rotating member (2) mounted so as to rotate integrally with the drive shaft (1) and an outer fitting in a state of integrally rotating with the driven shaft (3). The driven side rotating member (4), the clutch operating member (6) for connecting and disconnecting the connecting and disconnecting portion (5) formed between the drive side rotating member (2) and the driven side rotating member (4), and the fork (7). A wet multi-plate clutch is composed of a braking mechanism (8) or the like that presses and urges the driven side rotating member (4) by being pressed.

Incidentally, FIG. 1 shows a clutch engaged state, and FIG. 2 shows a clutch disengaged state.

The drive shaft (1) is bearing-supported by the case (9), and a drum-shaped drive-side rotating member (2) is provided at an end of the case.
Is attached to the side surface so as to rotate integrally by riveting, and the driven shaft (3) and one end thereof are coaxial with the drive shaft (1), and
The drive shaft (1) is internally supported by bearings so as to be rotatable relative to each other. A plurality of ring-shaped drive-side friction plates (10) are slidable on the inner circumference of the drive-side rotating member (2) in the axial center (P ₁ ) direction of the drive shaft (1) and rotate integrally. The spline is fitted.

The driven side rotating member (4) externally fitted and fixed to the driven shaft (3)
Is located on the inner peripheral side of the drive side rotating member (2) and has a plurality of ring-shaped driven side friction plates (11) fitted on the spline so as to be slidable in the axial center (P ₁ ) direction.

The drive side friction plate (10) and the driven side friction plate (11) are alternately arranged in the axial center (P ₁ ) direction to form the interrupted portion (5), and the axial center of the interrupted portion (5) ( The P ₁ ) direction is surrounded by the outer peripheral side surface (4a) of the driven side rotating member (4) and the clutch operating member (6).

Clutch operation member (6), together are slidably fitted on the axis (P ₁₎ direction to the driven side rotating member (4), the axis exist multiple locations in the circumferential direction (P ₁₎ projects in a direction The guide part (12) that has been moved to the side surface part (4
Insert b) in a loosely fitted state and attach a flange (13) to the end face.
Are bolted together. The flange (13) rotates integrally with the clutch operating member (6) without interfering with the driven shaft (3), and the side surface portion of the flange (13) and the side surface portion of the driven side rotating member (4) ( A spring (14) is interposed between the spring and the guide portion (12) so as to surround the guide portion (12).

A braking mechanism (8) is fitted on the opposite side of the flange (13) from the guide portion (12) via a bearing so as to be relatively rotatable.
The braking mechanism (8) includes a braking member (8a) fitted on a bearing, a contact surface (8b) which is a contact portion with the outer peripheral side surface (4a) of the driven side rotating member (4), and an elastic portion (8c). ) Via an integrated connection.

As shown in FIG. 2, the braking member (8a) has an elastic portion (8c).
With multiple locations riveting the flange to receive the pressing action by the fork (7) which is pivotally supported by the casing (9) side of the drive shaft axis of (1) (P ₁₎ and perpendicular to the axis (P ₂₎ 180 with respect to the part (8d) and the shaft center (P ₁ ) of the driven shaft (3)
゜ A pair of fork arms (7a) and (7
Cut surfaces (8e) and (8e), which are surface-contact with the parallel inner surface portions (7b) and (7b) of a) and serve as rotation preventing portions, are formed.

Next, the operation will be described.

When the fork (7) does not press the braking member (8a),
Since the clutch operating member (6) connected through the flange (13) is not pressed, the side surface portion of the flange (13) and the driven side rotating member (4) is urged by the bias of the compression set spring (14). The direction in which (4b) is separated, that is, the intermittent portion (5) surrounded by the outer peripheral side surface (4a) of the driven side rotation member (4) and the clutch operating member (6) is compressed, and the clutch is engaged. It is maintained in the state where it did.

Then, when the fork (7) is rotated to push the braking member (8) toward the drive shaft (1) side, the flange (13) and the side surface portion (4b) of the driven-side rotating member (4) form a spring ( 14)
The clutch operating member (6) cuts off the contact between the friction plates (10) and (11) to bring the clutch into a disengaged state, and the fork (7).
The contact surface (8b) connected to the braking member (8a), which is prevented from rotating by, presses and biases the outer peripheral side surface (4a) of the driven side rotating member (4) by the deformation of the elastic portion (8c). This prevents the driven side rotating member (4) from rotating along with the viscosity of the lubricating oil.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of an anti-rotation structure for a wet multi-plate clutch according to the present invention. Fig. 1 is a longitudinal sectional view showing a clutch engaged state, Fig. 2 is a side view of a main portion, and Fig. 3 is a clutch disengaged state. FIG. (3) …… Driven shaft, (4) …… Driven side rotating member, (6)
...... Clutch operating member, (7) …… Fork, (8)…
… Brake mechanism, (8a) …… Brake member, (9) …… Case.

Claims (1)

[Claims] 1. A clutch operating member (6) arranged concentrically with a driven shaft (3) is shifted by a fork (7) swingably supported by a case (9) against a biasing force applied to the clutch. In addition to being operable, the braking member (8a) supported by the clutch operating member (6) and the driven side rotating member (4) are interlocked with the shift operation of the clutch operating member (6) in the clutch disengagement direction. ) With a braking mechanism (8) that makes contact with the fork (7) via an elastic portion (8c), and the braking mechanism (8a) is engaged with the fork (7) in a non-rotating state. Anti-rotation structure.