JPH09177851A - Spring sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability when a spring sheet is assembled. SOLUTION: A spring sheet 32 is constituted to support the two ends of a small coil spring arranged between input and output rotation plates arranged in flush with each other and has a support side surface and a contact surface 36. Inclination surfaces 37 and 38 in a V-shape in cross section crossing each other are formed on a contact surface 36. The input and output rotation plates are brought into contact with the respective inclination parts on one side of the inclination parts 37 and 38 in a V-shape in cross section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring seat, and more particularly to a spring seat for receiving both ends of an elastic member used in a damper mechanism.

[0002]

2. Description of the Related Art A clutch disc assembly used for a vehicle clutch, for example, has a disc-shaped input side plate, an output side hub having a flange on its outer periphery, and a relative rotation between the input side plate and the flange. And a coil spring arranged to limit. Further, there is also provided a separated hub type clutch disc assembly in which the conventional flange is separated from the hub and the separated flange and the hub are connected by a coil spring having a low rigidity.

In the separated hub type clutch disc assembly, the coil spring connecting the flange and the hub is
It is accommodated in a notch formed in the hub side flange and a notch formed in the separation flange side. Resin spring seats are provided at both ends of the coil spring. The notches of the hub flange and the separation flange are in contact with the outer circumferential end surface of the spring seat.

[0004]

In the above-mentioned conventional clutch disc assembly, a sloped surface having a V-shaped cross section is formed at a portion of the spring seat where the notch of the separation flange and the flange of the hub come into contact with each other. This inclined surface is lowered inward in the circumferential direction from both sides in the radial direction toward the center. That is, the boundary line between the two inclined surfaces extends in the axial direction. The notches on the separation flange side and the hub side extend inward in the circumferential direction and are in contact with the two inclined surfaces, respectively.

In the conventional spring seat, an operator inserts the spring seats at both ends of the coil spring in the notches of the flange and the separation flange of the hub in an assembly line. At this time, it is necessary to align the V-shaped inclined surface of the spring seat with the inclined notch portions of the hub flange and the separation flange. That is, the direction in which the spring seat is mounted is limited, and for example, the spring seat cannot be mounted in a state rotated by 90 ° from the correct direction. As described above, since the worker needs to pay attention to the direction of the spring seat, the workability of assembling is poor.

An object of the present invention is to improve workability in assembling a spring seat.

[0007]

A spring seat according to claim 1 is for receiving both ends of an elastic member arranged between an input rotary plate and an output rotary plate arranged on the same plane, It has a receiving side surface and an opposite side surface. The receiving side surface receives the elastic member. On the other side,
A plurality of V-shaped sloping portions having cross sections are formed so as to intersect with each other. The input rotary plate and the output rotary plate are respectively in contact with the respective inclined portions of the plurality of V-shaped inclined portions.

An operator may bring any of the plurality of V-shaped inclined portions of the spring seat into contact with the input side plate and the output side plate when assembling. That is, the limitation of the direction of the spring seat is relaxed, and the workability of assembling is improved. In the spring seat according to the second aspect, the spring seat has a square shape, the plurality of V-shaped inclined portions in cross section are two, and extend so as to divide the opposite side surface of the spring seat into four squares. Conventionally, only one V-shaped sloped surface is formed on the opposite side of the spring seat, so the spring seat cannot be set unless the boundary line of the V-shaped sloped surface extends axially. That is, of the four sides of the square, only two of the four sides should be on the upper side. In the spring seat of the present invention, any of the four sides that come to the upper side may be used,
Assembly workability is good.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A clutch disc assembly 1 according to an embodiment of the present invention shown in FIG. 1 has torque from an engine (not shown) arranged on the left side of FIG. 1 arranged on the right side of FIG. It is a device for transmitting to and disconnecting from a transmission (not shown). In FIG. 1, OO
Is the axis of rotation of the clutch disc assembly 1.

The clutch disk assembly 1 mainly includes:
A hub 2 as an output side member, a clutch disc 3 and a retaining plate 4 as an input side member, a sub plate 5 as an intermediate member, and a relative rotation between the sub plate 5 and the hub 2 are restricted between the sub plate 5 and the hub 2. Of the small coil spring 6 arranged as described above, the large coil spring 7 arranged between the plates 3, 4 and the sub-plate 5 so as to limit the relative rotation therebetween, and the plates 3, 4 and the hub 2. And a frictional resistance generating mechanism 8 that generates a predetermined hysteresis torque when relative rotation occurs.

The hub 2 is arranged at the center of the clutch disc assembly 1 and is connected to a transmission shaft (not shown). The hub 2 has a cylindrical boss 2 extending in the axial direction.
a and a flange 2b integrally formed on the outer periphery of the boss 2a
It is composed of A spline hole 2e is formed on the inner peripheral side of the boss 2a for spline engagement with a shaft (not shown) of the transmission. On the flange 2b,
As shown in FIG. 2, a plurality of outer peripheral teeth 2 extending outward in the radial direction.
c is formed. Inner peripheral teeth 5d formed on the inner peripheral portion of the separation flange 5 are inserted between the outer peripheral teeth 2c. A predetermined gap is secured between the inner peripheral teeth 2c and the outer peripheral teeth 5d in the circumferential direction.

2 facing each other in the radial direction at the flange 2b
A notch 2d is formed at the location as shown in FIG. The support portions 2e formed on both sides of the notch 2d in the circumferential direction are inclined inward in the circumferential direction. The notch 5 is provided at a position corresponding to the notch 2d in the separation flange 5.
e is formed. The support portions 5f formed on both sides of the notch 5e in the circumferential direction are inclined inward in the circumferential direction.

A sub-plate 5 (separation flange) is arranged on the outer periphery of the flange 2b of the hub 2 in substantially the same plane. The sub-plate 5 is a disk-shaped plate. As is apparent from FIG. 2, the sub-plate 5 has four protrusions 5a extending radially outward. Each protruding portion 5a is formed with a window hole 5b extending in the circumferential direction. Outer notches 5c are formed between the protrusions 5a.

In the notches 2d and 5e, as shown in FIG. 4, a small coil spring 6 and a pair of spring seats 3 are provided.
2. A rubber float 31 is arranged. As apparent from FIGS. 5 and 6, the spring seat 32 includes a square main body 33 having a constant thickness and a protrusion 34 extending from the main body 33. The protruding portion 34 is formed on the receiving surface 35 side of the main body 33. The small coil spring 6 abuts on the receiving surface 35, and the protrusion 34 extends into the small coil spring 6. On the contact surface 36 opposite to the receiving surface of the main body 33, two orthogonal V-shaped cross-section inclined portions 37, 38 are provided.
Are formed. The contact surface 36 is divided into four squares by the inclined portions 37 and 38. Inclined portion 37,
38 is inclined so as to decrease from the center of the four sides toward the center of the contact surface 36. As a result, the supporting portion 2e and the supporting portion 5f may be brought into contact with either of the inclined surfaces 37 and 38 having a V-shaped cross section.

Conventionally, it was necessary to properly set the direction of the spring seat so that the inclined surface having a V-shaped cross section would be properly brought into contact with the supporting portion. That is, the spring seat cannot be set unless the boundary line of the V-shaped inclined surface extends in the axial direction, and the side of the square that should be on the upper side is only two of the four sides. In the spring seat of the present invention, any of the four sides that come to the upper side may be used, so that the workability of assembly is good.

The rubber float 31 is a coil spring 6
Is located within. The clutch plate 3 and the retaining plate 4 are arranged on both sides of the sub plate 5. The clutch plate 3 and the retaining plate 4 are a pair of substantially disk-shaped members, and are rotatably arranged on the outer peripheral side of the boss 2 a of the hub 2. The clutch plate 3 and the retaining plate 4 are fixed to each other by a contact pin 11 at the outer peripheral portion. The contact pin 11 is provided with an outer cutout 5c formed in the sub plate 5.
The inside is inserted. Since a predetermined gap is secured in the circumferential direction between the contact pin 11 and the outer notch 5c, the plates 3, 4 and the sub-plate 5 can be relatively rotated.

A friction coupling portion 10 is arranged on the outer periphery of the clutch disc 3. The friction connecting portion 10 mainly includes an annular cushioning plate 12 and a friction facing 13. The cushioning plate 12 has an annular portion 12 a fixed to the clutch plate 3 by a contact pin 11. Cushioning plate 1
2 A plurality of cushioning portions 12b are formed on the outer peripheral side. Friction facings 13 are fixed to both surfaces of the cushioning portion 12b.

Window holes 3a and 4a are formed in the clutch plate 3 and the retaining plate 4 at positions corresponding to the window holes 5b of the sub-plate 5, respectively. On both sides in the radial direction of each window hole 3a and window hole 4a, a pressing portion 3a and a pressing portion 4b which are cut and raised axially outward are formed. There are a total of four large coil springs 7, which are arranged in the window holes 5b of the sub-plate 5. A small coil spring is arranged inside the first coil spring 7 that faces in the radial direction. The large coil spring 7 is restricted from moving in the axial direction by the holding portion 4b of the retaining plate 4 and the holding portion 3b of the clutch plate 3.

Next, the frictional resistance generating mechanism 8 will be described. The frictional resistance generating mechanism 8 is composed of annular members disposed on the outer peripheral side of the boss 2a between the inner peripheral portion of the clutch plate 3 and the inner peripheral portion of the retaining plate 4 in the axial direction. The members constituting the frictional resistance generating mechanism 8 are
The first friction washer 14, the second friction washer 15, the first cone spring 16, the second cone spring 17, and the third friction washer 18.

The first friction washer 14 is a resin disk-shaped member. First friction washer 14
Is in contact with the side surface of the flange 2b of the hub 2 on the transmission side. A first cone spring 16 is arranged in a compressed state between the first friction washer 14 and the retaining plate 4 in the axial direction. The second friction washer 15 is a resin disk-shaped member, and is arranged on the outer peripheral side of the first friction washer 14. The second friction washer 15 is in contact with the inner peripheral end surface of the sub plate 5. The second friction washer 15 is engaged with the first friction washer 14 such that it cannot rotate relative to the first friction washer 14. Second friction washer 1
Reference numeral 5 has a protrusion that engages with the retaining plate 4 such that it cannot rotate relative to the retaining plate 4 and is movable in the axial direction. The second cone spring 17 includes the second friction washer 15
And the retaining plate 4 are arranged in a compressed state in the axial direction.

A third friction washer 18 is arranged axially between the inner peripheral portion of the clutch plate 3 and the flange 2b of the hub 2 and the inner peripheral end of the sub plate 5. Next, the operation of the clutch disk assembly 1 will be described. When the friction facing 13 is pressed against a flywheel (not shown) on the engine side, the torque of the flywheel on the engine side is input to the clutch plate 3 and the retaining plate 4. This torque is transmitted to the hub 2 via the large coil spring 7, the sub-plate 5, and the small coil spring 6, and is further transmitted to a transmission-side shaft (not shown).

Engine side flywheel (not shown)
When the torsional vibration is transmitted from the clutch disc assembly 1 to the clutch disc assembly 1, periodic relative rotation occurs between the plates 3 and 4, the sub plate 5, and the hub 2. At this time, the small coil spring 6 and the large coil spring 7 are compressed, and the friction generating mechanism 8 generates hysteresis torque. The twist characteristic will be described. In the range where the twist angle is small, the plates 3 and 4 and the sub plate 5 rotate integrally, and relative rotation occurs between them and the hub 2. At this time, the small coil spring 6 is compressed in the circumferential direction, and the first friction washer 14 and the third friction washer 1 are
8 slides on the flange 2b of the hub 2. When the twisting angle becomes large, the flow traverser 31 moves to the spring seat 3
Compressed to 2. This continues until the outer peripheral teeth 2c and the inner peripheral teeth 5d come into contact with each other. Thus, the characteristics of low rigidity and low hysteresis torque are obtained.

In the range where the twisting angle is large, the sub-plate 5 and the hub 2 rotate integrally, and these, the plates 3 and 4 are rotated.
Relative rotation occurs between and. At this time, the large coil spring 7 is compressed, the first friction washer 14 slides on the flange 2b of the hub 2, the second friction washer 15 slides on the inner peripheral side surface of the sub plate 5, and the third friction washer is further moved. The washer 18 slides on the flange 2b of the hub 2 and the inner peripheral portion of the sub plate 5. This continues until the contact pin 11 and the notch 5c make contact. Thus, the characteristics of high rigidity and high hysteresis torque are obtained.

[0024]

In the spring seat according to the aspect of the present invention, the operator, when assembling, causes any one of the plurality of V-shaped inclined portions of the spring seat to contact the input side plate and the output side plate. Is also good. That is, the limitation of the direction of the spring seat is relaxed, and the workability of assembling is improved.

In the spring seat according to another aspect of the present invention, since the four sides that come on the upper side may be any of four sides, the workability of assembling is good.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional view of a clutch disc assembly according to an embodiment of the present invention.

FIG. 2 is a partially cut-away view taken along the arrow II in FIG.

FIG. 3 is an enlarged view of circle A in FIG.

FIG. 4 is a partially enlarged view of FIG. 2;

FIG. 5 is a side view of a spring seat.

6 is a view on arrow VI in FIG.

[Explanation of symbols]

 1 Clutch Disc Assembly 2 Hub 3 Clutch Plate 4 Retaining Plate 5 Sub Plate 6 Small Coil Spring 7 Large Coil Spring 8 Frictional Resistance Generation Mechanism 31 Rubber Float 32 Spring Seat 33 Main Body 35 Bearing Surface 36 Abutting Surface 37, 38 Cross Section V V-shaped slope

Claims (2)

[Claims] 1. A spring seat for receiving both ends of an elastic member arranged between an input rotary plate and an output rotary plate arranged on the same plane, wherein a receiving side surface for receiving the elastic member intersects with each other. A spring seat, which has an opposite side surface on which a plurality of V-shaped cross-section inclined portions are formed, and wherein the input rotary plate and the output rotary plate abut on each one of the plurality of V-shaped cross-sectional inclined portions. 2. The spring seat is square, the plurality of V-shaped inclined portions in cross section is two, and extends so as to divide the opposite side surface of the spring seat into four squares. The described spring seat.