JPH0577626U - Damper disk - Google Patents

Abstract

(57) [Summary] [Purpose] In a damper disk that uses multiple types of elastic bodies, the load on the window holes of the flange is made uniform. [Structure] The damper disc includes a hub 1, a first outer peripheral torsion spring 14 and a second outer peripheral torsion spring 16
And a flow traverse 15, a clutch plate 8 and a retaining plate 9. The hub 1 has side plates 4 and 5 formed with a plurality of window holes 4a and 5a extending in the circumferential direction on the outer peripheral side. The clutch plate 8 and the retaining plate 9 are elastically connected to the side plates 4 and 5 in the circumferential direction via the three types of elastic bodies. Each of the three types of elastic bodies is arranged so as to be sequentially compressed between the plates 8 and 9 and the side plates 4 and 5, and the elastic bodies whose compression order is continuous have different window holes 4a and 5a. It is located inside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a damper disc, and more particularly to a damper disc that connects an input side rotating body and an output side member with a plurality of types of elastic bodies.

[0002]

[Prior Art]

 The damper disc is used, for example, as a clutch disc of a clutch arranged between an engine and a transmission of an automobile. A damper disk generally has a hub that has a flange on the outer peripheral side and can be connected to an output member, an input side rotating body, and a torsion spring that elastically connects the input side rotating body and the flange in the rotational direction. And an elastic body. The rotational force from the input side is transmitted to the hub and the output side member via the elastic body. The torque fluctuation input from the input side rotating body is attenuated by expansion and contraction of the elastic member and generation of hysteresis torque.

[0003]

[Problems to be solved by the device]

 In recent years, in particular, as a countermeasure against abnormal noise, multi-stage torsion characteristics of the damper disk have been implemented. In this case, a plurality of types of elastic bodies having different rigidity are used. These multiple elastic bodies are housed in the window holes of the hub flange, but due to the limited number of window holes, elastic bodies with different rigidity are housed in the same window hole. Has been done. For example, the elastic bodies used for the adjacent steps of the torsion characteristics are in one window hole, such as the first step and the second step, the third step and the fourth step, or the second step and the third step. It is arranged.

However, when the elastic bodies of adjacent steps are arranged in one window hole, the load on the window hole of the flange is biased depending on the region of torque fluctuation, and uneven wear occurs in the window hole of the flange. There is a problem that the hub and the flange are damaged due to stress concentration. An object of the present invention is to equalize loads on window holes of a flange in a damper disk that connects an input side rotating body and a hub connected to an output side member using a plurality of kinds of elastic bodies.

[0005]

[Means for Solving the Problems]

 The damper disk according to the present invention comprises a hub, three or more kinds of elastic bodies, and an input side rotating body. The hub has a flange on the outer peripheral side in which a plurality of windows extending in the circumferential direction are formed, and is connected to the output side member. The elastic body is arranged in the window hole of the flange. The input side rotating body is elastically connected to the flange in the circumferential direction via an elastic body. Further, each of the three or more types of elastic bodies is arranged so as to be sequentially compressed between the input side rotating body and the output side member, and the elastic bodies whose compression order is continuous are different in the window hole. It is located in.

[0006]

[Action]

 In the damper disk according to the present invention, the elastic bodies whose compression order is continuous are arranged in different window holes. Therefore, even if two types of elastic bodies expand and contract continuously in a region where a large amount of torque fluctuation occurs, the spring load is not biased to one window hole and is uniform.

[0007]

【Example】

 1 and 2 show a damper disk according to an embodiment of the present invention. Here, OO is the rotation center line. At the center of this damper disk, a hub 1 connected to a transmission shaft (not shown) as an output side member is arranged. The hub 1 has a spline 1a at the center thereof. Further, the hub 1 is integrally formed with a flange portion 2 projecting to the outer peripheral side. Four stopper notches 2 a are formed at equal intervals on the outer periphery of the flange portion 2. Further, four notches 2b for accommodating the inner circumferential side torsion spring 3 are formed between the adjacent notches 2a for stoppers. An inner circumferential torsion spring 3 having a low rigidity is housed in the two notches facing each other in the vertical direction of FIG.

On the other hand, a pair of side plates 4 and 5 are arranged on both sides of the flange portion 2. The pair of side plates 4 and 5 are substantially disk-shaped plate members rotatably arranged on the outer peripheral side of the hub 1. The outer circumferences of the side plates 4 and 5 in the radial direction are in close contact with each other, and both are fixed by rivets 6. On the outer circumferences of the pair of side plates 4 and 5, four window holes 4a and 5a are formed respectively at a predetermined angle in the circumferential direction. The side plates 4 and 5 have notches 4d and 5d opened to the outer peripheral side between the window holes 4a and 5a.

A first stopper pin 7 is provided on the inner peripheral portion of the pair of side plates 4 and 5 so as to be sandwiched between these side plates 4 and 5. The first stopper pin 7 sets the axial distance between the inner peripheral ends of the side plates 4 and 5. As is apparent from FIG. 1, the first stopper pin 7 is arranged so as to pass through the notch 2a provided in the flange portion 2 of the hub 1, and is formed as a circumferential wall of the notch 2a. It has a predetermined gap in the circumferential direction. In this way, when relative rotation occurs between the side plates 4 and 5 and the hub 1, the first stopper pin 7 abuts on the end face of the notch 2a so that the twist angle of both is regulated. It

Further, window holes are formed in the inner peripheral end portions of the side plates 4 and 5 at the portions corresponding to the cutouts 2 b of the flange 2. The seat members 3a provided at both ends of the inner circumference side torsion spring 3 extend in the axial direction, enter into the window hole, and contact with both ends thereof. That is, the side plates 4 and 5 are connected to the hub 1 via the inner peripheral side torsion springs 3 and function as flanges of the hub 1.

A clutch plate 8 and a retaining plate 9 as an input side rotating body are arranged on the outer sides of the side plates 4 and 5 in the axial direction. The clutch plate 8 and the retaining plate 9 are a pair of substantially disk-shaped members, and are rotatably engaged with the outer peripheral side of the hub 1. The clutch plate 8 and the retaining plate 9 are fixed on the outer peripheral portion by a second stopper pin 10. As shown in FIG. 2, the second stopper pin 10 is arranged so as to pass through the notches 4d and 5d formed at the outer peripheral ends of the side plates 4 and 5. A predetermined gap is circumferentially formed between the second stopper pin 10 and the notches 4d and 5d. As a result, when the clutch plate 8 and the retaining plate 9 rotate relative to the side plates 3 and 4, the second stopper pin 10 comes into contact with the notches 4d and 5d to restrict the twist angle.

A plurality of cushioning plates 12 are connected to the outer peripheral end of the clutch plate 8 by rivets 11, and friction facings 13 are provided on both surfaces of the cushioning plate 12. The retaining plate 9 and the clutch plate 8 are provided with spring accommodating portions 8a and 9a which are cut and raised outward in the axial direction at positions corresponding to the window holes 4a, 4b and 5a, 5b of the side plates 4 and 5, respectively. Have Plural kinds of outer peripheral side torsion springs are housed in the spring housing portions 9a, 8a and the window holes 4a, 5a of the side plates 3, 4 so that the plates 8, 9 and the side plates 4, 5 rotate in the rotating direction. It is elastically connected.

A first outer circumferential torsion spring 14 is arranged in a portion corresponding to the two window holes 4a and 5a facing each other in the left-right direction in FIG. Both ends of the first outer circumference torsion spring 14 are in contact with the circumferential end faces of the window holes 4a and 5a of the side plates 4 and 5, respectively. A flow traverser 15 having the highest rigidity is arranged on the inner circumference of the first outer circumferential torsion spring 14. A large gap is formed between the flow travers 15 and the circumferential end faces of the window holes 4a and 5a and the cut-and-raised parts 8a and 9a of the clutch plate 8 and the retaining plate 9.

A second outer peripheral side torsion spring 16 is arranged at a portion corresponding to the window holes 4a and 5a facing each other in the vertical direction in FIG. The second outer circumferential torsion spring 16 is composed of two types of springs 16a and 16b, and a relatively small gap is secured between the circumferential ends of the window holes 4a and 5a. The window holes 4a, 5a in which the second outer peripheral torsion spring 16 is arranged are arranged on the outer peripheral side in the radial direction of the notch 2b of the flange portion 2 in which the inner peripheral torsion spring 3 is housed. ..

A wave spring 17 and a first friction washer 18 are arranged between the inner peripheral end of the side plate 5 and the flange portion 2. A first friction plate 19 is arranged between the wave spring 17 and the first friction washer 18. As is apparent from FIG. 2, the first friction plate 19 is engaged with the first stopper pin 7 so as to rotate in the circumferential direction and slidably in the axial direction. A second friction washer 20 is arranged between the inner peripheral end of the side plate 4 and the flange portion 2. The friction washer and the wave spring 17 described above generate a predetermined hysteresis torque when the side plates 4 and 5 rotate relative to the flange portion 2.

A bush 21 is arranged between the radially inner peripheral ends of the side plate 4 and the clutch plate 8 and the outer peripheral surface of the hub 1. On the outer peripheral side of the bush 21 at the inner peripheral end of the side plate 4 and the inner peripheral end of the clutch plate 8, an annular cone spring 24 from the clutch plate 8 side, a second friction plate 23 fixed to the clutch plate 8 by rotation, A third friction washer 22 is arranged. A fourth friction washer 25 is arranged between the inner peripheral edge of the retaining plate 9 and the inner peripheral edge of the side plate 5. Due to the pressing force of the cone spring 24 and the third friction washer 22 and the fourth friction washer 25, a relatively large hysteresis torque is generated when the clutch plate 8 and the retaining plate 9 rotate relative to the side plates 4 and 5. It is supposed to do.

Next, the operation will be described. When the torque is transmitted to the friction facing 13, the torque is transmitted to the clutch plate 8 and the retaining plate 9 as the input side rotating body. Then, the torque transmitted to these plates 8 and 9 is transmitted to the side plates 4 and 5 via the first outer peripheral torsion spring 14 and further transmitted to the hub 1. At this time, in the case of a low load, the portion having the lowest rigidity, that is, the inner circumferential side torsion spring 3 is compressed, and the torsion angle-torsion torque characteristic according to this spring characteristic is obtained.

When the load is increased and the transmission torque is increased, the inner circumference side torsion spring 3 is further compressed, and the first stopper pin 7 rotates to come into contact with the end of the notch 2 a of the hub 1. .. As a result, the side plates 4, 5 are integrated with the hub 1 and the flange portion 2. When the load is further increased, relative rotation occurs between the clutch plate 8 and the retaining plate 9 and the side plates 4 and 5. Then, as the twist angle increases, the clutch plate 8 and the retaining plate 9 compress the first outer circumferential torsion spring 14. During the compression, the clutch plate 8 and the retaining plate 9 start to compress the second outer peripheral side torsion spring 16. After that, the first outer peripheral torsion spring 14 and the second outer peripheral torsion spring 16 have a combined spring characteristic, and a torsion angle-torsion torque characteristic corresponding to this spring characteristic can be obtained. .. When the twist angle further increases, the clutch plate 8 and the retaining plate 9 start compressing the flow traverser 15. When the second stopper pin 10 comes into contact with the cutouts 4d and 5d, the plates 8 and 9 and the side plates 4 and 5 rotate together thereafter.

In the twisting operation described above, when the side plates 4 and 5 are twisted by the hub 1 while compressing the inner circumferential side torsion spring 3, the wave spring 17, the first friction washer 18, and The second friction washer 20 generates a small first-step hysteresis torque. When the clutch plate 8 and the retaining plate 9 are twisted with respect to the side plates 4 and 5, a large second stage hysteresis torque is generated by the cone spring 24, the third friction washer 22 and the fourth friction washer 25. To do. As a result, the input torque fluctuation is attenuated.

Further, in this embodiment, three kinds of outer peripheral side torsion springs (first outer peripheral side torsion springs 14 and 15) are provided in the window holes of the side plates 4 and 5 functioning as the flanges of the hub 1. The second outer circumference side torsion spring 16 and the rubber float 15) are arranged so that a multi-stage spring characteristic can be obtained. The first outer peripheral side torsion spring 14 and the second outer peripheral side torsion spring 16 are separately arranged in different window holes 4a. The rubber float 15 functioning as the third outer peripheral side torsion spring is different from the second functioning second outer peripheral side torsion spring 16 in that it accommodates the first outer peripheral side torsion spring 14. It is arranged in the window hole 4a. That is, the elastic bodies that are successively compressed are arranged in different window holes. Therefore, when the first outer circumference side torsion spring 14 and the second outer circumference side torsion spring 16 repeatedly expand and contract due to torque fluctuation, conventionally, only two of the four window holes are loaded. However, in this embodiment, the spring load is distributed to the two sets of the window holes 4a and 5a facing each other, and the load is equalized. As a result, uneven wear of the perforations 4a and 5a is prevented. Further, the stress concentration generated in the side plates 4, 5, the flange portion 2, and the hub 1 is reduced, and damage is prevented. Further, it is possible to prevent eccentricity of these members.

[0021]

[Effect of the device]

 In the damper disk according to the present invention, the elastic bodies whose compression order is continuous are arranged in different window holes. Therefore, when the torque fluctuation is transmitted from the input side rotating body and the elastic body repeatedly expands and contracts, the load applied to the window hole of the flange becomes uniform. As a result, wear and damage of the flange and the hub are prevented. Also, eccentricity of the flange and hub is prevented.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a damper disk according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

[Explanation of symbols]

 1 Hub 2 Flange Part 4, 5 Side Plate 4a, 5a Window Hole 8 Clutch Plate 9 Retaining Plate 14 First Outer Side Torsion Spring 15 Flow Travers 16 Second Outer Side Torsion Spring

Claims (1)

[Scope of utility model registration request] 1. A hub having a flange formed with a plurality of window holes extending in the circumferential direction on the outer peripheral side and connected to an output side member, and three or more kinds of hubs arranged in the window holes of the flange. An elastic body and an input-side rotating body that is elastically connected to the flange in the circumferential direction via the elastic body. Each of the three or more types of elastic bodies includes the input-side rotating body and the flange. The damper disk is arranged so as to be sequentially compressed with respect to the window holes, and the elastic bodies whose compression order is continuous are arranged in the different window holes.