JP3319002B2 - Torsion damper disk - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torsional damper disk used for a clutch disk of an automobile or the like.

[0002]

2. Description of the Related Art Conventionally, this kind of technology has been
There is a technique disclosed in Japanese Patent Application Laid-Open No. -22498. this is,
A window edge is formed integrally with the window portion, and the window edge has a constant cross-sectional shape.

[0003]

Since both ends of the window edge slide with the torsion spring due to the torque load and the centrifugal force, wear occurs. Therefore, in the above-described conventional technique, the area of the sliding portion between the window edge and the torsion spring is small, and the surface pressure applied to the sliding portion is large, so that the wear resistance is low.

An object of the present invention is to improve the abrasion resistance of a sliding portion of a window edge with a torsion spring.

[0005]

In order to solve the above-mentioned technical problems, the technical means adopted in the present invention is to arrange a pair of annular side plates on both sides of an annular flange formed on a central hub. A window hole is provided at a position opposing the side plate and the flange, and a torsion spring extending substantially in the circumferential direction is interposed in the window hole, and the hub and the side plate are elastically connected in the circumferential direction. Side damper disc, a side press
Thereby integrally forming a window frame for covering the outer periphery of the disk portion of the torsion spring in the axial direction outside the over bets, periphery of window edges
The both ends and the central part in the direction are
Cover the outer periphery of the disc spring
This means that both ends of the window edge are formed arbitrarily larger than the center in the radial direction of the rate .

[0006]

The operation of the present invention will be described. On the outer edge of the window hole,
The window edge that covers only the outer peripheral portion of the disk of the torsion spring is formed integrally, and both end portions of the window edge are formed arbitrarily larger than the central portion, so that the area of the sliding portion of the window edge with the torsion spring is reduced. As the size increases, the surface pressure applied to the sliding portion can be reduced, and the wear resistance can be improved.

[0007]

An embodiment according to the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a damper disk according to this embodiment, and FIG. 2 is a view in the direction of arrow A in FIG. In the figure, a hub 10 having a center line O as a center has a spline 10a fitted on an output shaft (not shown) on an inner peripheral surface, and a flange 11 is integrally formed on an outer peripheral surface. Hysteresis torque generating portion 1 is formed annularly along the inner peripheral portions on both sides of flange 11.
2 and 13 are disposed, and a pair of annular side plates 1 are provided on both sides of the flange 11 with the torque generating portions 12 and 13 interposed therebetween.
4 and 15 are arranged. A plurality of window holes 20, 21, 22 (only one is shown) are provided at predetermined intervals in the circumferential direction of the clutch disc at portions near the outer periphery of the flange 11 and both side plates 14, 15. ,
Each set of three windows 20, 21, 22 opposes in the direction of the center line O, and the torsion spring 16 is fitted in each set of windows 20, 21, 22. Each torsion spring 1
Numeral 6 extends in the circumferential direction of the clutch disk, and the flange 11 and the two plates 14, 15 are elastically connected to each other in the circumferential direction of the clutch disk by a torsion spring 16. The outer peripheral portions of both side plates 14 and 15 are
The flanges 11 are integrally connected to each other by a stop pin 17 that fits into the notch 11a on the outer peripheral portion with play in the circumferential direction of the clutch disc. The cushioning plate 1 is provided on the outer periphery of one side plate 14.
8 is fixed to the cushioning plate 1
An annular facing 19 is fixed to both surfaces of 8. The facing 19 is arranged between a not-shown engine-side flywheel (not shown) and a pressure plate (not shown).

The window holes 21 of both side plates 14 and 15
22, the window edge 30 is integrally formed only at the outer peripheral portion, and the window edge 30 covers the disk outer peripheral portion of the torsion spring 16 so that the torsion spring 16 does not protrude. Furthermore, both ends of the window edge 30
The torsion spring 16 is formed to be larger than the central portion so as to cover the outer peripheral portion of the disk.

Next, the operation of this embodiment will be described.

When the facing 19 is pressed against the flywheel of the engine by a pressure plate (not shown), torque is applied from the flywheel to the facing 19, the cushioning plate 18, the two side plates 14, 1 and 2.
5, torsion spring 16, flange 11, hub 1
0 to the output shaft. In that case, the hub 10
On the other hand, the torsion spring 16 is compressed in response to the torsional torque applied to the facing 19, and the side plates 14, 15 are twisted with respect to the flange 11.
Slip occurs in the torque generating units 12 and 13. Due to the slip, a hysteresis torque is generated in the torsion torque-torsion angle characteristic, and the torque vibration is absorbed by the hysteresis torque, thereby preventing abnormal vibration and abnormal noise of the power transmission mechanism.

Here, when the disk rotates at high speed about the center line O, the torsion spring 16 receives centrifugal force and presses the window edges 30 to the outer peripheral side.
Because the flow end of is formed larger than the center,
The sliding area with the torsion spring 16 is large, which leads to improvement in wear resistance.

[0013]

The effects of the present invention will be described. A pair of annular side plates are arranged on both sides of an annular flange formed on a central hub, window holes are provided at positions opposite to the both side plates and the flange, and each of the window holes extends in a substantially circumferential direction. In a torsion damper disk in which a hub and a side plate are elastically connected in the circumferential direction with a spring interposed, a window edge that covers only the disk outer peripheral portion of the torsion spring is integrally formed with an outer peripheral edge of the window hole. A torsion damper disk wherein both ends of the window edge are formed arbitrarily larger than the center portion, and the area of the sliding portion of the window edge with the torsion spring is increased. The surface pressure applied to the moving part can be reduced, and the wear resistance is improved.

[Brief description of the drawings]

FIG. 1 shows a sectional view of a torsional damper disk according to the present invention.

FIG. 2 is a view showing a direction indicated by an arrow A in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Hub 11 ... Flange 14, 15 ... Side plate 16 ... Torsion spring 19 ... Facing 20, 21, 22 ... Window hole 30 ... Window edge

Claims (1)

(57) [Claims] 1. A pair of annular side plates are disposed on both sides of an annular flange formed on a central hub, and window holes are provided at positions facing the both side plates and the flange, respectively.
In a torsion damper disk in which a hub and the side plate are elastically connected in the circumferential direction by interposing a torsion spring extending substantially in the circumferential direction in the window hole, an outer peripheral edge of the window hole is provided. Outside the axial direction of the side plate
Thereby integrally forming a window frame for covering the outer periphery of the disk portion of the torsion spring on the side, you in the circumferential direction of the window edges
The both ends and the central part of the torsion
Cover the outer peripheral portion of the disk of the
A torsion damper disk wherein both end portions of the window edge are formed arbitrarily larger than a center portion in a radial direction of the rate .