JPH0662227U - Hydraulic clutch - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] Eliminates the rotation when the clutch is off, standardizes the components of the drive plate, and extends the life of the components. [Structure] A plurality of grooves are provided on the outer circumference of a hub integrated with an input shaft, and a plurality of projections projecting on the inner circumference of a plurality of clutch disks 3 are provided side by side in engagement with the grooves of the hub.
A plurality of protrusions provided on the outer periphery of the drive plate 4 interposed between the clutch housing 2 and the output shaft 12
In a hydraulic clutch that engages with a plurality of grooves drilled on the outer periphery of the drive disc and hydraulically connects and disconnects the clutch disc 3 and the drive plate 4, a small hole is formed at a portion deviated from the center of the width of the protrusion of the drive plate 4. Perforated and drive plate 4
Every other side so that the small hole positions of the opposing protrusions are displaced in the circumferential direction, and then flip them over and mount them on the clutch housing 2. Insert the elastic body into the small holes of the protrusions of the drive plate 4 that is placed every other side. And the tip end thereof is brought into contact with the plate surface of the opposing projection.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wet multi-plate hydraulic clutch used for a power transmission system of a general machine or a general vehicle.

[0002]

[Prior art]

 A plurality of grooves are provided on the outer circumference of the hub integrated with the input shaft, and a plurality of projections protruding from the inner circumference of the plurality of clutch discs are engaged with the grooves of the hub to be installed side by side. A plurality of protrusions provided on the outer periphery of the drive plate interposed between the clutch plate and the drive shaft are hydraulically connected to each other by engaging a plurality of grooves formed on the outer periphery of the clutch housing that is integral with the output shaft. Hydraulic clutches that are disengaged to intermittently drive power are already known.

[0003]

[Problems to be solved by the device]

 In the previously known hydraulic clutch, even if the hydraulic pressure is set to 0 and the pressure on the contact surface between the clutch disk and the drive plate is removed, the clutch force is completely disengaged due to the adhesive force due to the viscosity of the oil present on the contact surface. It may not be the case, but it may be accompanied by a little and cause the appearance. Therefore, small holes are drilled in the protrusions of the drive plate, these drive plates are attached to the clutch housing, and elastic bodies are inserted into the small holes of the protrusions of the drive plates every other sheet so that when the clutch is engaged, it is elastic. When the body comes into contact with the protrusions of every other drive plate and compresses slightly, and when the clutch is off, the repulsive force of the compressed elastic body positively separates the contact between the clutch disk and the drive plate. However, if the small hole is located on the center line of the width of the drive plate, the contact surface of the elastic body will always contact the back surface of the small hole of the opposing drive plate, which shortens the life of the elastic body. It was In addition, in order to avoid the above-mentioned drawbacks, if the opposite drive plates are made non-perforated and are assembled alternately with and without holes, not only the number of parts is increased but also the assembling work is complicated. Furthermore, there is also a method in which an elastic body is inserted into and mounted on protrusions that fly one by one in the circumferential direction, and the protrusions are offset in phase from each other to assemble, but the number of elastic bodies is halved and the repulsive force of the elastic bodies causes The effect of positively separating the contact between the clutch disk and the drive plate is also halved, which defeats the original purpose.

[0004]

[Means for Solving the Problems]

 According to the present invention, a plurality of grooves are provided on the outer circumference of the hub portion which is integral with one shaft, and a plurality of projections projecting on the inner circumference of a plurality of clutch disks are provided side by side by engaging with the grooves of the hub portion. , The plurality of protrusions provided on the outer periphery of the drive plate interposed between the clutch disks are engaged with the plurality of grooves formed on the outer periphery of the clutch housing integral with the other shaft, and these clutch discs are In a hydraulic clutch that connects and disconnects the drive plate by hydraulic pressure to interrupt power, a small hole is punched in a portion deviated from the center of the width of the protrusion of the drive plate, and the drive plates are opposed to each other. Every other sheet is flipped over so that the small holes on the protrusions are displaced in the circumferential direction, and then mounted on the clutch housing. By its tip is into contact with the plate surface of the opposing projections by out, it solves the problems described above.

[0005]

[Action]

 The power input to one of the shafts is transmitted to a plurality of projections provided on the inner circumference of a plurality of clutch discs that engage with a plurality of grooves provided on the outer circumference of the hub integral with the shaft, and further to the clutch housing. The hydraulic pressure from the back is transmitted to the drive plates by the frictional force of the contact surfaces with the plurality of drive plates interposed between the clutch disks. Since the plurality of projections provided on the outer periphery of the drive plate are engaged with the plurality of grooves formed on the outer periphery of the clutch housing that is integral with the output shaft coaxial with the input shaft, the power is transmitted to the input shaft. Is transmitted to the output shaft. On the other hand, when the clutch is turned off, the pressure on the contact surface between the clutch disk and the drive plate is removed by setting the hydraulic pressure to 0, and further, when the clutch is engaged, it is slightly compressed and every other drive plate is placed. The opposing drive plates are positively separated by the repulsive force of the elastic body that is inserted into the small hole, so there is no entrainment phenomenon and a complete clutch-off state is obtained. In addition, a small hole is bored at a position deviated from the center of the width of the plurality of protrusions protruding on the outer periphery of the drive plate, and an elastic body protruding on both sides is inserted into the small hole of every other drive plate. Since the same drive plate is simply turned over and assembled when it is inserted, the elastic body is always in contact with the plate surface of the protrusion, so that the sufficient number of elastic bodies can be attached and the life of the elastic body is extended.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a hub portion 1a integral with an input shaft 1 is inserted into an outer cylinder 2a of a clutch housing 2 and a plurality of grooves 1b are formed on the outer periphery thereof. It is provided. Clutch linings 3a are attached to both sides of the groove 1b, and a plurality of clutch discs 3 having a plurality of protrusions 3b corresponding to the number of the grooves 1b engaged with the inner periphery of the clutch lining 3a are arranged so as to be axially movable. It is set up.

A drive plate 4 is interposed between the clutch disks 3, and a plurality of protrusions 4 a projecting from the outer periphery of the drive plate are provided in a plurality of outer cylinders 2 a of the clutch housing 2. The grooves 2b are arranged side by side so as to be engaged with the grooves 2b so as to be movable in the axial direction.

A retaining ring 5 is inserted into an inner peripheral groove at the outer end of the clutch housing 2 on the opening side of the outer cylinder 2 a, and a plurality of sets of clutches are inserted through a disc spring 6 and a back plate 7 inside the retaining ring 5. It serves as an outer stopper for the combination of the touch disk 3 and the drive plate 4.

A piston 8 supported by the inner diameter of the outer cylinder 2 a and the outer diameter of the boss portion 2 c is installed inside the clutch housing 2, and the other end of the piston 8 is the outer periphery of the boss portion 2 c of the clutch housing 2. In addition, the retaining ring 9 and the backup ring 10 are in contact with the return spring 11 that serves as a stopper, and the back surface of the piston 8 is always urged in the direction of contacting the wall of the clutch housing 2. When hydraulic pressure is applied from the rear surface of the piston 8, the piston 8 is moved outward against the urging force of the return spring 11, and pressure is applied to the combination of the plurality of sets of the clutch disk 3 and the drive plate 4 to cause the clutch. Power is transmitted to the drive plate 4 by the frictional force of the contact surface between the clutch lining 3a of the disk 3 and the drive plate 4. The plurality of protrusions 4a provided on the outer periphery of the drive plate 4 are engaged with the plurality of grooves 2b provided on the outer periphery of the clutch housing 2 which is integral with the output shaft 12 coaxial with the input shaft 1. The power is transmitted from the input shaft 1 to the output shaft 12.

On the other hand, when the clutch is turned off, the oil is released from the oil passage 13 provided in the wall of the clutch housing 2 and the hydraulic pressure from the rear surface of the piston 8 is set to 0, whereby the clutch disk 3 and the drive plate are The pressure on the contact surface of 4 is removed. In this state, the clutch force may not be completely turned off due to the adhesive force due to the viscosity of the oil present on the contact surface, and a slight entrainment phenomenon may occur.

Therefore, small holes 14 are bored in a portion deviated from the center of the width of the protrusions 4a of the drive plate 4 as shown in FIG. 2, and the drive plates 4 are attached to the small holes of the protrusions 4a facing each other. Every other sheet is flipped over so that the position shifts in the circumferential direction, and mounted in the groove 2b of the clutch housing 2, and the rubber plugs 15 are inserted through the small holes 14 of the protrusions 4a of the one-piece drive plate 4 to project to both sides. The tip of the drive plate 4 is configured to abut against the plate surface of the opposing projection 4a. Therefore, the opposing drive plate 4 is driven by the repulsive force of the rubber plug 15 which is slightly compressed when the clutch is engaged due to hydraulic pressure. The positively separating action works and the contact between the clutch disk 3 and the drive plate 4 separates, so there is no entrainment phenomenon and a complete clutch-off state can be obtained. Became. Further, the rubber plug 15 can be inserted into the small holes 14 of all the protrusions 4a on the outer periphery of the drive plate 4 placed every other sheet, and a strong repulsive force can be obtained to prolong the life of the rubber plug 15. Is now possible. The O-rings 16 and 17 are seals for separating the high pressure side and the clutch side.

[0012]

[Effect of device]

 According to the present invention, a plurality of grooves 1b are provided on the outer circumference of the hub portion 1a which is integral with one shaft, and a plurality of projections 3b projecting on the inner circumference of a plurality of clutch disks 3 are provided on the groove 1b of the hub portion 1a. A plurality of projections 4a that are engaged with each other and project on the outer periphery of the drive plate 4 interposed between the clutch disks 3 are formed on the outer periphery of the clutch housing 2 that is integral with the other shaft. In a hydraulic clutch that engages with the groove 2b and connects and disconnects the clutch disk 3 and the drive plate 4 by hydraulic pressure to interrupt the power, it is deviated from the center of the width of the protrusion 4a of the drive plate 4. Small holes 14 are punched in the parts, and the drive plates 4 are flipped over every other so that the small holes of the opposing projections 4a are displaced in the circumferential direction, and mounted on the clutch housing 2. The elastic body is inserted into the small hole 14 of the projection 4a of the plate 4 so that the elastic body is projected to both sides so that the tip end of the elastic body abuts the plate surface of the opposed projection 4a. In addition, due to the strong repulsive force of mounting the rubber plug 15 on each protrusion 4a, the entrainment phenomenon is eliminated when the clutch is off, and the life of the rubber plug 15 can be further extended.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a hydraulic clutch.

FIG. 2 is a front view of a drive plate.

FIG. 3 is a plan view of a clutch housing groove.

[Explanation of symbols]

 1 Input Shaft 2 Clutch Housing 3 Clutch Disc 4 Drive Plate 8 Piston 11 Return Spring 12 Output Shaft 14 Small Hole 15 Rubber Plug

Claims (1)

[Scope of utility model registration request] 1. A plurality of grooves 1b are provided on the outer circumference of a hub portion 1a which is integral with one shaft, and a plurality of projections 3b projecting on the inner circumference of a plurality of clutch disks 3 are provided on the hub portion 1a.
A plurality of protrusions 4 which are provided on the outer periphery of the drive plate 4 which is provided between the clutch disks 3 by being engaged with
a is engaged with a plurality of grooves 2b formed in the outer circumference of the clutch housing 2 which is integral with the other shaft, and the clutch disks 3 and the drive plate 4 are hydraulically connected and separated to interrupt the power. In the hydraulic clutch, small holes 14 are bored in a portion deviated from the center of the width of the protrusion 4a of the drive plate 4, and the drive plate 4
Are placed on the clutch housing 2 by flipping every other sheet so that the small holes of the opposing projections 4a are displaced in the circumferential direction.
An elastic body is inserted into the small hole 14 of the protrusion 4a of the drive plate 4 placed every other sheet so that the elastic body is protruded to both sides so that the tip end thereof abuts the plate surface of the opposing protrusion 4a. Hydraulic clutch to.