JP2003322186A - Stacked disc spring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stacked disc spring capable of being quickly, easily and accurately manufactured, and reducing the difficulty in stacking the disc springs. <P>SOLUTION: This stacked disc spring 10 is composed of plate-shaped disc springs 11, 12 having holes 13 in their centers, the disc springs 11, 12 are connected to each other at their peripheral edges, and connecting parts 14 are bent, respectively, whereby the disc springs 11, 12 are stacked in parallel or in series, and stacked in a state of combining parallel stacking and serial stacking. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined disc spring formed by stacking a plurality of disc springs in advance.

[0002]

2. Description of the Related Art Conventionally, a disc spring 1 is used which is a disc-shaped disc having a hole 2 in the center thereof and which is used by applying a load so that the dish becomes flat (see FIGS. 12 and 13). .).

The disc spring 1 has a large spring constant as a single body, but the spring constant can be variously changed by stacking a plurality of disc springs 1 as shown in FIG. For this reason, it is used in a device part where a large load is applied to a relatively small space.

The conventional disc spring 1 is, as shown in FIG.
As shown in FIG. 15, the convex surface 1a and the concave surface 1b are laminated in parallel so as to be stacked, and the convex surface 1a and the convex surface 1a are overlapped, or as shown in FIG. There is a series stack used by stacking the parts 1c. Further, there is a case where a combination of the parallel stack and the serial stack is used.

General spring characteristics obtained by stacking a plurality of the above-mentioned disc springs are shown in FIG. 17 in the case of parallel stacking and in FIG. 18 in the case of serial stacking. 17 and 18 show the magnitude N of the load P and the disc spring 1
3 is a characteristic curve between the number of stacked layers n and m. Note that h ₀ is a displacement constant.

The above-mentioned laminated construction of a plurality of disc springs is shown in FIG.
As shown in FIG. 4, the central hole 2 of each disc spring 1 is inserted into the shaft 3
16 or the disc springs 1 are inserted into the cylinder 4 so as to be superposed on each other, as shown in FIG. 3a is a locking part.

[0007]

However, the work of stacking a plurality of disc springs is artificially performed by an operator so that the disc springs 1 are superposed one by one on the axis of the shaft 3 or the cylinder 4. Often. For this reason, when stacking the disc springs 1, it is necessary to always consider the directions of the convex surface 1a and the concave surface 1b, and thus the work is generally troublesome. When the disc spring is extremely small, the work becomes more complicated.

In the laminated construction of the plurality of disc springs 1, the spring characteristics are largely different as described above due to the difference in the superposing form of the disc springs 1. Therefore, it is necessary to prevent an error in the superposing work. Becomes Especially, in the above-mentioned series stacking, since the stacking directions of the disc springs are different from each other,
There is a high possibility that an error in the stacked state will occur. In the case of the combination of the parallel stacking and the serial stacking, the complexity of the stacking work is extremely large, and particularly in the stacking work inside the cylinder 4, the stacking state of each disc spring 1 cannot be confirmed from the outside. Therefore, there is a drawback in that the difficulty in the overlaying work is further increased.

[0009] Therefore, an object of the present invention is to provide a laminated disc spring which can be manufactured easily and which can reduce the difficulty of superposing the disc springs and can be quickly and accurately manufactured. did.

[0010]

In order to achieve the above-mentioned object, the laminated disc spring of the present invention is a disc-shaped disc spring having a hole in the center thereof, and a plurality of the disc springs are mutually connected at their peripheral portions. It is characterized in that the disc springs are laminated by connecting them and bending these connecting portions respectively.

In the above-described laminated disc spring of the present invention, a plurality of disc springs are connected by the connecting portion at their peripheral edges,
By bending the connecting portion, the laminated structure of the disc springs can always be easily obtained at a fixed position. Each of the disc springs and the connecting portion is the same as the conventional one in that, for example, a thin steel plate is processed into a disc shape or the like and further processed so as to retain the spring action. Therefore, the bending process of the connecting portion of each disc spring can be performed artificially or mechanically.

Since a plurality of disc springs can be obtained in a series in a connected state, a required number of disc springs can be manufactured at once. Further, the stacking position of each disc spring is determined by the connecting portion, and the stacking process can be obtained not only by hand but also by mechanical work.

According to the laminated disc spring of the present invention,
It can be a series stack or a combination of these. Since the disc springs are obtained in a laminated state in this way, it is possible to stack multiple laminated disc springs further and to combine various laminated disc springs without error. Therefore, the overlapping work is extremely easy.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. A laminated disc spring 1 according to an embodiment shown in FIGS. 1 and 2.
0 was shown. The laminated disc spring 10 includes a disc spring 11 and a disc spring 1
2 and 2 are connected by the connecting portion 14. Reference numeral 13 is a hole at the central position of the disc springs 11 and 12.

That is, the laminated disc spring 10 has the concave surface 11b of the disc spring 11 and the disc spring 12 via the bent connecting portion 14.
The convex surface 12a is overlapped with the convex surface 12a. Therefore, the disc springs 11 and 12 are stacked in parallel so that the disc springs 11 and 12 are in contact with each other, and the holes 13 of the disc springs are arranged in series.

The laminated disc spring 10 is made of thin steel disc springs 11,
It is possible to use those which are integrally molded into the shapes of 12 and the connecting portion 14 and which have been subjected to processing such as quenching and tempering so as to retain the spring action. Therefore, a plurality of disc springs 11, 12 and the like can be obtained at the same time, so that the manufacturing thereof can be performed easily and quickly.

The laminated disc spring 15 shown in FIG. 3 is similar to the laminated disc spring 10 in that the disc spring 11 and the disc spring 12 are connected by a connecting portion 14, and each hole 13 is also a series. Is configured. The laminated disc spring 15 can be manufactured similarly to the laminated disc spring 10.

In the laminated disc spring 15, the bent connecting portion 14
The peripheral edge 11c of the disc spring 11 and the peripheral edge 1 of the disc spring 12
2c and 2c are overlapped.
Therefore, the disc spring 11 and the disc spring 12 are laminated in a form of direct overlap with their peripheral edges in contact with each other.

The laminated disc springs 10 and 15 can be used by being superposed on the shaft or cylinder. FIG. 4 shows a state in which a plurality of laminated disc springs 10 are superposed on the shaft 16. In this superposition, the laminated disc spring 10 is attached to the shaft shaft 16a so as to be in a parallel superposition state.
The hole 13 was inserted. Layered disc spring 10 at the bottom
Is supported by the seat 16b of the shaft, and another laminated disc spring 10 is stacked on top of it.

When the laminated disc springs 10 are superposed on the shaft 16 to complete the laminated constitution of the disc springs, the superposition time is reduced by half and the superposition target is enlarged, so that the number of used discs can be confirmed. It is simple and the stacking work can be performed accurately and quickly. Such an operation is the same when a plurality of laminated disc springs 10 are inserted into the cylinder. In the superposition of the plurality of laminated disc springs 10, spring characteristics similar to those of the conventional parallel superposition are produced.

FIG. 5 shows a state in which a plurality of laminated disc springs 15 are stacked. In this superposition configuration, a plurality of laminated disc springs 15 are placed in series in a cylinder 17 in a stacked state. Reference numeral 18 denotes a movable shaft for transmitting the spring action of the laminated disc springs 15 superposed in the cylinder 17 to the outside.

In this case, since the convex surfaces 11a and 12a of the disc springs 11 and 12 are in contact with each other with respect to the laminated disc spring 15, the direction of the laminated disc spring 15 is not taken into consideration, and the laminated disc springs 15 are superposed. You can do the work. In the superposed structure of the plurality of laminated disc springs 15, spring characteristics similar to those of the conventional series-laid spring are generated.

FIG. 6 shows the laminated disc spring 20. The laminated disc spring 20 has the disc spring 2 through the bent connecting portion 24.
1, 22, and 23 are stacked in parallel to form a triple layer.

As shown in FIGS. 7 and 8, the laminated disc spring 20 has disc springs 21, 22 and 23 connected to a connecting portion 24, respectively.
Are connected to each other to be integrally formed, and each connecting portion 24 is bent. Therefore, it can be easily manufactured similarly to the laminated disc springs 10 and 15 described above. Reference numeral 26 is a slit formed from the hole 25 of each disc spring 21, 22 and 23 to the disc surface. These slits 26 are for increasing the spring action of each disc spring.

According to the laminated disc spring 20, it is possible to perform the superposing work on the shaft, the cylinder or the like more easily, quickly and more accurately.

FIG. 9 shows the laminated disc spring 30. The laminated disc spring 30 has the disc spring 3 through the bent connecting portion 35.
1, 32, 33, and 34 are laminated by a combination of parallel and series.

The laminated disc spring 30 is, as shown in FIG.
The disc springs 31, 32, 33 and 34 are connected to the connecting portion 35, respectively.
And is integrally formed by bending, and each connecting portion 35 is bent. Therefore, the laminated disc springs 10 and 15 and the laminated disc spring 20 described above can be easily manufactured.

In this case, the disc springs 31, 32, 33 and 3
As for No. 4, first, as to the disc springs 31 and 34 at both ends, the connecting portions 35 at corresponding positions are bent and stacked in parallel. Then, the disc springs 31 and 32 and the disc springs 33 and 34 that are stacked in parallel are bent in the connecting portion 35 at the central position to be stacked in a serially stacked state, whereby the stacked disc spring 30 according to the combination is obtained.

According to the laminated disc springs 30 thus laminated, it is possible to perform the superposing work of the disc springs in the intended mode on the shaft, the cylinder, etc. more easily, quickly, and more accurately. it can.

[0030]

Since the present invention is constructed as described above, the following effects are exhibited. According to the laminated disc spring of the present invention, since a plurality of disc springs can be preliminarily laminated, it is possible to easily, swiftly and accurately perform the superposing work on the shaft or the cylinder. In particular, according to the laminated disc spring in the serially stacked form, the stacking work can be performed without the need to determine the direction of the stacking, so the reduction effect in the stacking work is high.

In the laminated disc spring of the present invention, since each disc spring can be integrally formed via the connecting portion, its manufacture is as simple as the conventional one. Further, the bending work for the connecting portion can be performed manually as well as mechanically, which is suitable for mass production.

In the laminated disc spring of the present invention, in addition to parallel lamination and series lamination, a complicated laminated disc spring can be formed by combining these, so that it is possible to easily obtain a superposed structure of various complicated disc springs. it can.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a laminated disc spring according to an embodiment of the present invention.

FIG. 2 is a plan view of a laminated disc spring according to an embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a laminated disc spring of another embodiment according to the invention.

FIG. 4 is a vertical cross-sectional view illustrating a form in which the laminated disc spring of the embodiment according to the present invention is superposed on the shaft.

FIG. 5 is a vertical cross-sectional view for explaining a form in which a laminated disc spring of another embodiment according to the present invention is superposed in a cylinder.

FIG. 6 is a vertical cross-sectional view of a laminated disc spring according to another embodiment of the present invention.

FIG. 7 is a developed vertical sectional view of a laminated disc spring according to another embodiment of the present invention.

FIG. 8 is a developed plan view of a laminated disc spring according to another embodiment of the present invention.

FIG. 9 is a longitudinal sectional view of a laminated disc spring of another embodiment according to the invention.

FIG. 10 is a developed vertical sectional view of a laminated disc spring according to another embodiment of the present invention.

FIG. 11 is a vertical cross-sectional view showing a state in which a part of a laminated disc spring according to another embodiment of the present invention is expanded.

FIG. 12 is a vertical sectional view of a conventional disc spring.

FIG. 13 is a plan view of a conventional disc spring.

FIG. 14 is a vertical cross-sectional view when a plurality of conventional disc springs are stacked in parallel.

FIG. 15 is a vertical cross-sectional view when two conventional disc springs are stacked in series.

FIG. 16 is a vertical cross-sectional view showing a state in which a plurality of conventional disc springs are stacked in series in a stacked state.

FIG. 17 is a diagram showing a spring characteristic curve when a plurality of conventional disc springs are stacked in parallel.

FIG. 18 is a diagram showing a spring characteristic curve when a plurality of conventional disc springs are stacked in series.

[Explanation of symbols]

10 stacked disc springs 11, 12 Disc spring 11a, 12a convex surface 11b, 12b concave 11c, 12c peripheral 13 holes 14 Connection 15 Stacked disc springs 16 shafts 16a shaft axis 17 cylinders 20 stacked disc springs 21, 22, 23 Disc spring 24 Connection 25 holes 26 slits 30 stacked disc springs 31, 32, 33, 34 Disc spring 35 Connection 36 holes

Claims (4)

[Claims] 1. A disc-shaped disc spring having a hole in the center thereof, wherein a plurality of the disc springs are connected to each other at their peripheral portions, and the disc springs are laminated by bending the connecting portions respectively. A laminated disc spring characterized by the above. 2. The laminated disc spring according to claim 1, wherein a plurality of the disc springs are laminated in parallel. 3. The laminated disc spring according to claim 1, wherein the laminated state of the plurality of disc springs is a series stack. 4. The laminated disc spring according to claim 1, wherein the laminated state of the plurality of disc springs is a combination of parallel lap and series lap.