JPS60501Y2 - Plate support device for multi-plate clutch - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a plate support device for a multi-plate clutch that reduces the number of parts by changing the mounting structure of one of the drive plate or the driven plate.

A multi-disc clutch has one of a drive plate and a driven plate integrally supported with respect to a rotating shaft, the other rotatably supported, and a friction material interposed between these plates pressed together to generate power. It is something that communicates.

In general, both the drive plate and the driven plate are cup-shaped with a U-shaped cross section.

Pressure welding of the friction material is performed by an external operation.

Conventionally, the drive plate or driven plate on which the friction material is interposed is formed into two opposing plates, and this plate is installed on the outer periphery of the clutch center or clutch sleeve hub. It was connected by pushing it into the spline.

This has the problem of taking up space and requiring the clutch center or clutch sleeve hub to be a dedicated part for connecting the plates.

The object of this invention is to provide a plate support device for a multi-plate clutch that solves this problem.

Next, this invention will be explained with reference to FIG. 1 for an embodiment having both a multi-disc clutch and a shoe-type centrifugal clutch. It is rotatably supported by a bearing 3.

An inner peripheral portion of a drive plate 4 is rotatably fitted into the crankshaft 1.

The coupling structure between the drive plate 4 and the crankshaft 1 will be described later.

As shown in the figure, the drive plate 4 has a U-shaped cross section, and cooperates with another drive plate 5 to perform a driving function.

A portion of the drive plate 4 is cut and raised toward the other drive plate 5, and the inner peripheral portion of the drive plate 5 is supported by this cut and raised portion 6 (see FIG. 2).

7 is a hole after the cut and raised portion 6 is cut and raised, and 8 is a driven plate.

The driven plate 8 has a U-shaped cross section, and its inner peripheral portion is fixed to one end of a gear 10 rotatably supported by the crankshaft 1 through a bearing 9.

A plate 11 is provided inside the driven plate 8 and faces the two drive plates 4 and 5 via friction materials 12 and 13.

Note that a friction material 14 is also interposed between the drive plate 5 and the driven plate 8.

Reference numeral 15 denotes a shift plate, the outer circumference of which engages with the driven plate 8, and the vicinity of the inner circumference of which engages with the bearing 1.
6 is supported.

A disc spring 17 is interposed between the inside of the shift plate 15 and the outside end of the drive plate 4, and presses the drive plate 4 to the left in FIG.

As a result, the drive plates 4, 5 and the driven plate 8 are integrated.

A shoe support plate 18 is integrally attached to a part of the crankshaft 1 by spline connection, and the shoe support plate 18 has a le shoe 19 that expands due to centrifugal force when rotating together with the crankshaft 1. It is rotatably supported by.

A lining 21 is attached to the inner peripheral portion of the drive plate 4 facing the shoe 19.

Reference numeral 22 denotes a pressure plate, the base end of which is supported by the housing 2 through a shaft 23, and rotates clockwise around the shaft 23 when the tip is pushed to the left in FIG. This is to push the shift plate 15 to the left.

Reference numeral 24 denotes a pressure rod, which is supported by the housing 2 so as to be movable in the axial direction thereof, and is normally biased to the right in FIG. 1 by a spring means (not shown).

The aforementioned pressure plate 22 is engaged with the tip of the pressure rod 24, and the base end projects outside the housing 2 and is linked to a clutch lever via a lever or wire (not shown).

Reference numeral 25 denotes a countershaft, which is rotatably supported by a bearing 26, and which performs a speed change operation by meshing a plurality of gears 27 provided on the outer circumference of the countershaft with gears provided on a drive shaft (not shown). It is.

A gear 28 is integrally attached to the tip of the countershaft 25 by spline connection, and meshes with a gear 10 rotatably supported by the crankshaft 1.

This device configured as described above operates as follows.

First, when the crankshaft 1 rotates due to the operation of an engine (not shown), the shoe support plate 18 integrated therewith also rotates.

At this time, the shoe 19 naturally also rotates.

The shoe 19 does not come into contact with the lining 21 on the inner circumference of the drive plate 4 until the rotation speed of the crankshaft 1 reaches a certain value, but when the rotation speed of the crankshaft 1 increases and reaches a certain rotation speed, the shoe 19 is centrifugal. The shoe 19 expanded by the force comes into pressure contact with the lining 21, causing the drive plate 4 to rotate together.

Since the drive plate 4 is always pushed to the left in FIG. 1 by the disc spring 17 as described above, the friction materials 12 and
The drive plates 4 and 5 and the driven plate 8 are integral with each other through the drive plates 3 and 14 and the plate 11, and therefore the rotation of the drive plate 4 is transmitted to the gear 10 through the driven plate 8 and meshes with the gear 10. It will be transmitted to the countershaft 25 via the gear 28.

As the rotation speed of crankshaft 1 decreases, shoe 1
When the centrifugal force acting on shoe 9 becomes smaller, shoe 19 separates from lining 21, so power transmission is interrupted at this portion.

Next, to disengage the centrifugal clutch from the engaged state, the pressure rod 24 may be pushed to the left in FIG. 1 by, for example, squeezing the clutch lever (not shown).

As a result, the pressure plate 22, which rotates clockwise about the shaft 23, pushes the shift plate 15 to the left.

When the shift plate 15 is pushed to the left, the disc spring 17 reverses and pulls the drive plate 4 to the right.

This releases the friction material 12°13.14,
Power transmission will be cut off at this part.

In the above operation, the drive plate 5 rotates integrally with the drive plate 4 because the inner peripheral part is supported by the cut and raised part 6 formed by cutting and raising a part of the drive plate 4. It will move closer to and away from the plate 4.

Therefore, it does not take up much space and does not require special parts unlike the conventional ones mentioned above.

FIG. 3 shows the main part of an embodiment in which two or more drive plates 5 are used. In this embodiment, the cut-and-raised portion 6 of the drive plate 4 is only lengthened, and the same implementation is possible. can.

In the embodiments described above, this invention is applied to the drive plate side, but the present invention is not limited thereto and can also be applied to the driven plate side.

Since this device is configured as described above, it can take up less space than the conventional one, and it also eliminates the need for special parts, making it advantageous in terms of cost. Even if the number of sheets increases, there is an advantage that this can be accommodated simply by increasing the length of the cut and raised portion.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing the main parts of an embodiment of this invention;
This figure is a perspective view of the cut-and-beveled part in FIG. 1, and FIG. 3 is a sectional view showing the main part of another embodiment of this invention. 1...Crankshaft, 4,5...
Drive plate, 6...cut and raised part, butt...
...Driven plate, 11...Plate, 1
2. 13. 14...Friction material.

Claims (1)

[Scope of utility model registration request] A multi-plate system in which one of a drive plate and a driven plate is integrally supported and the other is rotatably supported relative to a rotating shaft, and driving force is transmitted by pressing a friction material interposed between them. In the clutch, one of the drive plate or the driven plate is formed of a plurality of plates so as to sandwich the friction material therebetween, and a part of one of the plurality of plates is cut and raised toward the other. A plate support device for a multi-disc clutch, characterized in that an inner peripheral portion of the other plate is supported by a cut and raised portion.