JP2602896Y2 - Torsional vibration reduction device - 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 vibration reduction device used for a clutch device of a manual transmission of an automobile or a lock-up clutch of a torque converter.

[0002]

2. Description of the Related Art Conventionally, as this kind of torsional vibration reduction device, one shown in FIGS. 3 and 4 has been proposed.

In this torsional vibration reducing device, a pair of side plates 3 and 3 are arranged on both axial sides of a hub plate 2 projecting radially outward of a hub 1.
And windows 4 and 5 along the circumferential direction are formed at corresponding positions of the side plates 3 and 3, respectively. , 6 are accommodated. The hub 1 and the side plates 3, 3 are elastically connected in the rotation direction by engaging the ends of the windows 4, 5 with the end faces of the compression springs 6. An annular step 7 is provided at the radially inner end of the hub plate 2, and the hub 1 and the side plate 3 are provided between the step 7 and the inner surface of one of the side plates 3. an elastic member for preventing with three axial play
And a corrugated metal wire 8 is interposed. A bent portion 9 is formed in the inner peripheral edge portion of the side plate 3 in a ring shape, and the bent portion 9 suppresses the radially inward movement of the metal wire 8 . In addition, 10 is window 4,5
This is an idler for causing the inner compression springs 6, 6 to act in series along the circumferential direction.

[0004] Since the torsional vibration reducing device has the above-described structure, the torsional vibration of the power transmission system is reduced by the vibration absorbing action of the compression spring 6 that works with the relative rotation of the hub 1 and the side plates 3. .

The above technology is disclosed in, for example, Jpn.
No. 2121 and the like.

[0006]

However, in the above-mentioned conventional torsional vibration reducing device, the stepped portion 7 of the hub plate portion 2 is not provided.
Between the inner surface of the side plate 3 and the corrugated metal wire
8 and interposed, since a structure of only down the movement of the radially inward of the metal wire 8 with the bent portion 9 of the side plate 3, the metal wire 8 by an input such as a centrifugal force or impact easily shifted from a predetermined storage position in the radially outward direction, the deviation
The metal wire 8 is in side play with the hub plate 2
If it is caught between the three, the subsequent repair becomes difficult . In addition, at the time of assembly, the stepped portion 7 of the hub plate portion 2 and the bent portion 9 of the side plate 3 are required.
Thus, the side plate 3 must be assembled to the side of the hub plate portion 2 while positioning the metal wire 8 , and thus the assembly operation is complicated.

In view of the above, the present invention provides a wavy metal as an elastic body at a predetermined position between a hub plate and a side plate.
An object of the present invention is to provide a torsional vibration reduction device that can reliably support a metal wire and that can be easily assembled.

[0008]

According to the present invention, as a means for solving the above-mentioned problems, a hub and a pair of side plates arranged on both axial sides of a hub plate portion projecting radially outward of the hub are provided. A plate, a compression spring that elastically connects the pair of side plates and the hub in the rotational direction, and a compression spring interposed between a radially inner edge of the side plate and a side surface of the hub plate portion. And a corrugated metal wire for preventing the rattling of the two in the axial direction.
Annular recess with one opening edge lower than the radially outer opening edge
And forming a protrusion at the radially inward end of the side plate, the tip of which protrudes toward the recess, while accommodating the metal wire in the recess.
Axially overlaps only the radially outer opening edge of the part
I tried to make it.

[0009]

[Function] At the time of assembling, a corrugated metal wire is previously housed in the concave portion on the side surface of the hub plate portion, and the side plates are assembled on both sides of the hub plate portion in that state, and the tip of the protrusion of the side plate is attached to the hub. The projection protrudes toward the recess of the plate , and the projection is axially aligned with the radially outward opening edge of the recess.
Let it burlap.

In the assembled device, a space surrounded by the opening edge of the concave portion on the hub plate portion side and the tip of the projection on the side plate side is formed.
The corrugated metal wire is in the space and is prevented from moving by the opening edge of the recess and the projection. Above all, the diameter of the recess
The outside opening edge overlaps the protrusion in the axial direction.
Therefore, the movement of the corrugated metal wire outward in the radial direction is
This overlap is reliably prevented. Also,
The radially inner opening edge of the recess overlaps the protrusion in the axial direction.
Since there is no tap, there is a slight error in the projection angle of the protrusion, etc.
Even if it occurs, the protrusion does not interfere with the hub plate.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. It is to be noted that the same reference numerals are used for the same parts as the conventional one shown in FIGS.

In the drawings, reference numeral 1 denotes a hub whose inner peripheral edge is connected to a member on one of an input side and an output side of a power transmission system. And a pair of side plates coupled to the remaining one side member.

The hub 1 is integrally provided with a hub plate portion 2 protruding radially outward on the outer periphery thereof. The hub plate portion 2 has a plurality of substantially U-shaped windows 4 extending along the circumferential direction. Is formed. The side plate 3 is the hub plate 2
Are rotatably arranged on both sides in the axial direction, and the side plates 3, 3 are riveted to each other at the outer peripheral edge.
At the positions of the side plates 3 and 3 corresponding to the windows 4 of the hub plate portion 2, there are elongated windows 5 along the circumferential direction.
The windows 5 of the side plates 3 and 3 and the window 4 of the hub plate portion 2 accommodate a pair of compression springs 6 and 6 in series so as to straddle both. The compression spring 6 has double spring elements 6a and 6b having different coil diameters.
So-called nested type, each spring element 6
The end faces of a and 6b engage with the ends of the windows 4 and 5 of the hub plate 2 and the side plates 3 and 3. Therefore, the hub 1 and the side plates 3 are elastically connected via the compression spring 6 in the rotation direction. Reference numeral 10 denotes an annular movable element arranged on the outer periphery of the hub plate portion 2 so as to be freely rotatable with respect to the hub 1 and the side plates 3 and 3, and the movable element 10 is provided on the inner periphery. Compression springs 6, 6 in windows 4, 5
By interposing the compression springs, the compression springs 6 and 6 act in series along the circumferential direction.

An elastic body is provided between one side surface of the hub plate portion 2 and the inner side surface of the side plate 3.
A corrugated metal wire 8 is interposed, and the metal wire 8 prevents axial play between the hub 1 and the side plate 3. An annular concave portion 12 is formed on one radially inner side surface of the hub plate portion 2,
An annular protrusion 13 whose tip projects toward the recess 12 is formed by coining at a radially inward end of the side plate 3 opposed thereto. Here, in the case of this embodiment, the radially inner opening edge 12a of the concave portion 12 is formed lower than the outer opening edge 12b, but the tip of the projection 13 has only the outer opening edge 12b. They overlap in the axial direction. The metal wire 8 includes the recess 12 and the protrusion 13.
The elastic force acts between the bottom surface of the concave portion 12 and the tip of the protrusion 13.

Since the torsional vibration reducing device has the above-described configuration, when a driving torque is input to the hub 1 and one of the side plates 3 and 3, the torque is transmitted to the other side through the compression spring 6. At this time, the torsional vibration of the power transmission system is reduced by the vibration absorbing action of the compression spring 6. The axial play between the hub 1 and the side plates 3 is absorbed by the pressing action of the metal wire 8 accommodated in the recess 12.

In the case of this torsional vibration reducing device, the tip of the projection 13 of the side plate 3 is made to project into the recess 12 while the metal wire 8 is accommodated in the recess 12 of the hub plate 2, and the projection 13 is A radially outer opening edge 12b of
Due to the axial overlap, even if the axial gap between the hub plate portion 2 and the side plate 3 fluctuates,
The opening edge 1 in which the portion of the concave portion 12 is radially outward from the radially outward portion
2b is closed by the overlap between the protrusion 13 and the gold.
Even if a centrifugal force or impact is input to the metal wire 8, the metal wire 8 does not move radially outward. In addition, this device
In addition, the protrusion 13 of the side plate 3 is a hub plate portion.
2 in the axial direction with the radially inner opening edge 12a of the concave portion 12.
-Since it is set not to wrap,
3 does not interfere with the hub plate 2
You.

[0017] In addition, in the case of this device, when assembled, gold
The side wire 3 can be assembled to the hub 1 such that the metal wires 8 are stored in the recesses 12 in a positioned state in advance, and in this state, the tips of the protrusions 13 project into the recesses 12. For this reason, the assembling work becomes extremely easy as compared with the conventional one in which the side plate 3 is assembled to the hub 1 while positioning the metal wire 8 .

[0018] The embodiments of this invention are not limited to those described above, for example, in the above embodiment, the metal wire
Although the example in which the metal wire 8 is interposed only between the hub plate portion 2 and one side plate 3 has been described, the metal wire 8 may be further interposed between the hub plate portion 2 and the other side plate 3. good.

[0019]

[Effects of the Invention] As described above, the present invention provides a hub plate portion.
The radially inner opening edge is the radially outer opening edge
Lower circular recess, and a metal wire is inserted into this recess.
While accommodating, on the radially inner edge of the side plate
The tip forms a projection projecting toward the recess, and the projection
Axially over only the radially outward opening edge of the recess.
-The metal wire is corrugated even if the axial gap between the hub plate and side plate fluctuates.
Movement of wood radially outward of is reliably prevented by the overlap of the opening edge and the projection of the radially outward constantly concave, waves
The shape of the metal wire changes in the radial direction due to the input of centrifugal force or impact, etc.
Shift outward and engage between the hub plate and side plate.
It will not be impregnated. In the present invention,
The side plate protruding part is only the radially outward opening edge of the concave part.
Axially overlap with each other to form a radially inward opening edge.
Over time to prevent overlap
An error occurred in the projection angle of the projection due to deformation due to
Even if the protrusions interfere with the hub plate
No longer occurs and unnecessary friction increases
Malfunctions and deterioration of vibration absorption performance do not occur. Further, at the time of assembling, since the elastic body can be stored in the recessed portion of the hub plate portion in advance, the assembling work can be performed easily and reliably as compared with the conventional one. .

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line AA of FIG. 2 showing one embodiment of the present invention.

FIG. 2 is a partially broken front view showing the same embodiment.

FIG. 3 is a partially broken front view showing a conventional technique.

FIG. 4 is an exemplary sectional view taken along the line BB of FIG. 3 showing the same technique;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hub, 2 ... Hub plate, 3 ... Side plate, 6 ... Compression spring, 8 ... Corrugated metal wire, 12 ... Concave part, 13 ... Protrusion.

Claims (1)

(57) [Scope of request for utility model registration] 1. A hub, a pair of side plates disposed on both sides in the axial direction of a hub plate portion projecting radially outward of the hub, and the pair of side plates and the hub are elastically rotated in a rotating direction. And a wave which is interposed between the radially inner edge of the side plate and the side surface of the hub plate to prevent the axial play of the both.
A torsional vibration reduction device comprising a metal wire having a shape , wherein a radially inner opening edge has a diameter on a side surface of the hub plate portion.
An annular recess lower than the opening edge outward in the direction
While the metal wire is accommodated in the concave portion, a protrusion is formed at the radially inner end edge of the side plate so that a tip portion protrudes toward the concave portion. of
A torsional vibration reduction device characterized in that only the opening edge is overlapped in the axial direction .