JPH0669446U - Spring assembly - Google Patents

Abstract

(57) [Summary] [Purpose] Improvement of the spring assembly used for the clutch mechanism of the automatic transmission of automobiles. [Structure] Two disc-shaped substrates 1 are arranged inside and outside
In the spring assembly in which the set of compression coil springs S1 and S2 are attached at a constant interval,
The compression coil springs S arranged on the inside and outside of each of the mounting points of
Holding means 3 and 4 for fixing the respective end turn portions of 1 and S2 are individually formed, and the holding means 3 is fixed to the compression coil spring S2 on the inner side by caulking to the outside and compressed on the outer side. By fixing the holding means 4 to the coil spring S1 by crimping inward, the crimping work on the inside and the outside is very simple, and as the workability is improved, the compression coil on the outside is improved. Since it is not necessary to take a large clearance between the inner diameter of the spring S1 and the outer diameter of the inner compression coil spring S2, it is possible to effectively obtain the maximum load obtained from the two compression coil springs S1 and S2. Becomes

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a spring assembly used for a clutch mechanism or the like of an automatic transmission of an automobile.

[0002]

[Prior art]

 This type of conventional spring assembly consists of a single compression coil spring mounted on a disc-shaped substrate at regular intervals.Usually, multiple cylindrical holdings are made on the disc-shaped substrate at regular intervals. A wall or a pair of holding claws facing each other is formed by stamping or the like, and a state in which the end turn portion of the compression coil spring is fitted to each cylindrical holding wall or the facing claw is obtained, and these cylindrical holdings are held. The compression coil springs are fixed to the disc-shaped substrate at intervals by caulking the walls or the holding claws to the outside, but some of them require strong load or downsizing. Some compression coil springs described above use two compression coil springs having different winding directions and different diameters as a set.

In such a spring assembly, when the pair of compression coil springs is mounted between two disk-shaped substrates facing each other, for example, it is disclosed in Japanese Utility Model Publication No. 58-53932. As described above, it is possible to securely attach a set of two compression coil springs between the opposing disk-shaped substrates only by applying the above-mentioned fixing structure by crimping to the compression coil spring arranged inside. When the is used in a spring assembly having only one disk-shaped substrate, a structure for individually fixing the compression coil springs arranged inside and outside is inevitably required. Therefore, as one of the methods, although not specifically shown, the single compression coil spring fixing structure is used as it is, and the inner and outer compression coil springs are attached to the respective attachment points of one disk-shaped substrate. It is possible to fix a pair of compression coil springs by individually forming corresponding cylindrical holding walls or opposing holding claws and crimping all the cylindrical holding walls or each holding claw outward. Conceivable.

[0004]

[Problems to be solved by the device]

 However, it is needless to say that under this fixing structure, the caulking direction is the same on the inside and the outside, but the caulking work becomes troublesome, but in order to improve this, the outer side of the compression coil spring is If a large clearance is provided between the inner diameter and the outer diameter of the inner compression coil springs, then it becomes difficult to obtain the maximum load obtained from a pair of compression coil springs.

[0005]

[Means for Solving the Problems]

 The present invention was developed in order to effectively solve the problem of such a spring assembly, in which a pair of compression coil springs arranged on the inside and the outside are fixedly spaced on a single disk-shaped substrate. Assuming that the spring assembly is configured to be installed at a predetermined position, a retaining means for fixing each end turn portion of the compression coil spring arranged inside and outside is individually formed at each attachment point of the disk-shaped substrate, and For the compression coil spring, the holding means is swaged and fixed to the outside, and for the outside compression coil spring, the holding means is swaged and fixed to the inside.

[0006]

[Action]

 Therefore, in the present invention, by making the caulking directions of the holding means inside and outside different, the caulking work becomes much easier than the conventional one, and the workability is improved. Since it is not necessary to take a large clearance between the inner diameter of the outer compression coil spring and the outer diameter of the inner compression coil spring, the maximum load obtained from a pair of compression coil springs can be effectively obtained. Becomes

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. Also, the spring assembly according to the first embodiment basically corresponds to one disk-shaped substrate 1 in a winding direction and a diameter. It is premised that two sets of different compression coil springs S1 and S2 are attached to the inside and outside, but the feature is that, as shown in FIG. An annular convex stopper wall 2 for restricting the position of the compression coil spring S1 arranged on the outer side is provided in a projecting manner at the attachment point, and is arranged inside on the central concentric circle of the annular convex stopper wall 2. A pair of holding claws for fixing the end portion of the outer compression coil spring S1 to the outside of the annular convex stopper wall 2 while forming the cylindrical holding wall 3 for fixing the end winding portion of the compression coil spring S2. 4 are formed so as to face each other. Therefore, at least the outer diameter of the annular convex stopper wall 2 is substantially equal to or slightly smaller than the inner diameter of the outer compression coil spring S1, and the outer diameter of the cylindrical holding wall 3 is the inner diameter. The compression coil spring S2 has a diameter substantially equal to or slightly smaller than that of the compression coil spring S2.

[0008] Actually, when a set of two compression coil springs S1 and S2 is attached to each mounting portion of the disk-shaped substrate 1, as shown in FIG. The end-winding portion of the compression spring S2 on the inner side is fitted by fitting the end-winding portion of the le spring S2 to the outer periphery of the cylindrical holding wall 3 and mechanically crimping the holding wall 3 outward. Is securely fixed to the disc-shaped base plate 1, and the end of the large-diameter compression coil spring S1 arranged outside is fitted between the annular convex stopper wall 2 and the pair of holding claws 4. This time, if the holding claws 4 are crimped inward, the end turn portion of the compression coil spring S1 on the outer side can be reliably fixed to the disk-shaped substrate 1.

Therefore, in the first embodiment, the cylindrical holding wall 3 is swaged outward, and the pair of holding claws 4 are swaged inward, so that the caulking directions on the inside and outside are different. Needless to say, this makes caulking work easier than in the past, but as workability improves, the inner diameter of the outer compression coil spring S1 and the outer diameter of the inner compression coil spring S2 increase. Since it is not necessary to take a large amount of clearance, the maximum load obtained from a set of two compression coil springs S1 and S2 can be effectively obtained, and it can be incorporated in the clutch mechanism of the automatic transmission. Therefore, even if the compression coil springs S1 and S2 repeatedly expand and contract, there is no concern that they will accidentally fall off from the disk-shaped substrate 1. In addition, in the first embodiment, when the outer compression coil spring S1 is fixed, it is possible to fix the outer compression coil spring S1 while restricting its position by the annular convex stopper wall 2. The outer compression coil springs S1 and S2 also have a great advantage that they are always accurately positioned and fixed on the concentric circles without inadvertently interfering with each other.

Next, the spring assembly according to the second embodiment will be described. In the second embodiment, as shown in FIG. Compression coil springs S1 and S2 define the circular recess 5 into which the respective end turn portions are fitted together, and fix the end turn portion of the inner compression coil spring S2 on the central concentric circle of the circular recess portion 5. While the cylindrical holding wall 3 is formed, a plurality of pressing portions 6 are formed on the outer peripheral edge of the recess 5 at regular intervals. Therefore, in the second embodiment, the end portions of the compression coil springs S1 and S2 on the inner and outer sides are fitted together in the circular recess 5 to form a cylindrical holding wall as shown in FIG. If 3 is swaged outward, the end turn portion of the compression coil spring S2 on the inside is securely fixed to the disc-shaped base plate 1, and the pressing portion 6 is pressed to separate the pressing portions 6 individually. If the inner side is swaged inward, the end turn portion of the compression coil spring S1 on the outer side can be surely fixed to the disc-shaped substrate 1 as well, so that the same effect as the first embodiment can be expected. Becomes

Finally, the spring assembly according to the third embodiment will be described. The spring assembly according to the third embodiment is a modification of the above-described first embodiment, and as shown in FIG. With the wall 2 omitted, the cylindrical holding wall 3 for fixing the end turn portion of the inner compression coil spring S2 and the end turn portion of the outer compression coil spring S1 are simply attached to the respective mounting points of the disk-shaped substrate 1. Only a pair of holding claws 4 for fixing the above are formed. Therefore, also in this third embodiment, as shown in FIG. 6, the end turn portion of the compression coil spring S2 disposed inside is fitted to the outer periphery of the cylindrical holding wall 3 to hold the holding wall. If 3 is swaged outward, the compression coil spring S2 on the inner side is securely fixed to the disc-shaped substrate 1, and the end coil portion of the compression coil spring S1 arranged on the outer side is held by a pair of holding claws. If the holding claws 4 are fitted in between and the holding claws 4 are crimped inward, the outer compression coil spring S1 is also securely fixed to the disk-shaped substrate 1, so that It is possible to expect the same effect as that of the embodiment. However, in this case, for fixing the inner compression coil spring S2, it is also optional to use a pair of holding claws 4A as shown in FIG. 7 instead of the cylindrical holding wall 3 depending on the implementation.

[0012]

[Effect of device]

 As described above, according to the present invention, since the caulking direction is made different by the holding means on the inside and outside, the caulking work becomes much easier than the conventional one, and it goes without saying that the workability is improved. With the improvement of such workability, it is not necessary to increase the inner diameter of the compression coil spring arranged on the outside and the outer diameter of the compression coil spring arranged on the inner side, so that a set of two The maximum load that can be obtained from the compression coil spring is effectively obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part of a spring assembly according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of essential parts showing a state in which a pair of compression coil springs are fixed to a disk-shaped substrate under the embodiment.

FIG. 3 is a perspective view of relevant parts showing a structure of a spring assembly according to a second embodiment on the side of a disk-shaped substrate.

FIG. 4 is a main-portion cross-sectional view showing a state in which a pair of compression coil springs are fixed to a disk-shaped substrate under the embodiment.

FIG. 5 is a perspective view of relevant parts showing a structure of a spring assembly according to a third embodiment on the side of a disk-shaped substrate.

FIG. 6 is a main-portion cross-sectional view showing a state in which a pair of compression coil springs is fixed to a disk-shaped substrate under the embodiment.

FIG. 7 is a perspective view of an essential part showing a modified example of the third embodiment.

[Explanation of symbols]

 1 Disc-shaped substrate 3 Cylindrical holding wall (holding means) 4 Holding claw (holding means) 4A Holding claw (holding means) 6 Pressing part (holding means) S1 Compression coil spring arranged outside S2 Compression arranged inside Coil spring

Claims (1)

[Scope of utility model registration request] 1. A spring assembly in which a pair of compression coil springs arranged inside and outside are attached to a single disc-shaped substrate at regular intervals, and at each attachment point of the disc-shaped substrate. , Individually forming a holding means for fixing each end turn portion of the compression coil spring arranged on the inside and outside, and for the compression coil spring on the inside, the holding means is fixed by crimping the outside, A spring assembly characterized in that a holding means for the compression coil spring on the outside is crimped and fixed inward.