Elastic component and elastic device

Abstract

The elastic component is a plate-shaped elastic component and comprises a plurality of belleville springs arranged on a plane; and a support part that is provided integrally with the plurality of belleville springs on the plane and around the plurality of belleville springs, and that supports the plurality of belleville springs.

Description

Technical Field

[0001] The invention relates to an elastic component and an elastic device. Background Art

[0002] Patent Document 1 below discloses a technique in which, in a semiconductor device, a semiconductor module is sandwiched between a heat sink and an elastic pressing plate, and a semiconductor module is fixed to a heat sink with a heat dissipation surface of the semiconductor module pressed against the heat sink.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2013-110241 Summary of the invention

[0004] <Problems to be Solved by the Invention>

[0005] However, in the technology of Patent Document 1, since only a thin metal plate is used as the pressing plate, the semiconductor module cannot be strongly pushed onto the heat sink. Therefore, in the technology of Patent Document 1, there is a possibility that the semiconductor module may shake or the cooling efficiency of the semiconductor module may decrease.

[0006] Furthermore, in recent years, in order to achieve miniaturization of various devices such as semiconductor modules, elastic components that can be arranged in a narrow gap and can apply a high load are required. However, in the pressure plate of Patent Document 1, even if it can be arranged in a narrow gap, a high load cannot be applied.

[0007] In order to solve the above-mentioned problems, an object of the present invention is to provide an elastic member capable of applying a high load in a narrow gap.

[0008] <Methods used to solve the problem>

[0009] To solve the above problems, an elastic component of one embodiment is a plate-shaped elastic component, including: a plurality of disc springs arranged in an array on a plane; and a supporting portion, which is integrally arranged with the plurality of disc springs on the plane and around the plurality of disc springs, and supports the plurality of disc springs.

[0010] <Effects of the Invention>

[0011] According to the elastic member of one embodiment, it is possible to provide an elastic member capable of applying a high load in a narrow gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is an exploded perspective view of an elastic device according to an embodiment.

[0013] Figure 2 is a partially enlarged side view of an elastic device according to an embodiment.

[0014] Figure 3 It is an exploded perspective view showing another structural example of the elastic device according to one embodiment.

[0015] Figure 4 It is a partially enlarged side view showing another structural example of the elastic device according to one embodiment.

[0016] Figure 5 : is a table showing the analysis results of the load characteristics of the elastic device according to one embodiment.

[0017] Figure 6 : is a graph showing the analysis results of the load characteristics of the elastic device according to one embodiment.

[0018] Figure 7 This is a diagram showing a usage example of an elastic member according to an embodiment.

[0019] Figure 8 It is a diagram showing a modification example of the elastic member according to one embodiment.

[0020] Fig. 9 It is a diagram showing a modified example of the elastic device according to one embodiment. DETAILED DESCRIPTION

[0021] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

[0022] (Structure of the elastic device 10)

[0023] Figure 1 is an exploded perspective view of an elastic device 10 according to one embodiment. Figure 2 FIG. 1 is a partially enlarged side view of an elastic device 10 according to an embodiment.

[0024] like Figure 1 As shown, the elastic device 10 of one embodiment has a thin and flat shape as a whole. The elastic device 10 has two elastic members 100 (elastic members 100-1, 100-2) and an intermediate plate 20. The elastic device 10 has a stacked structure in which the intermediate plate 20 is sandwiched between the two elastic members 100. Note that the two elastic members 100 are identical to each other, but are used in a state where the front and back sides are reversed.

[0025] Note that in this embodiment, for convenience, the thickness direction of the elastic device 10 is set to the up and down direction (Z-axis direction), the length direction of the elastic device 10 is set to the left and right direction (X-axis direction), and the width direction of the elastic device 10 is set to the front and back direction (Y-axis direction).

[0026] The elastic member 100 is a metal, flat plate-shaped member, and has a rectangular outer shape with the left-right direction (X-axis direction) as the longitudinal direction in a plan view. The elastic member 100 includes a plurality of disc springs 110 and a support portion 120 .

[0027] The plurality of disc springs 110 are provided within the frame of the base portion 121 of the support portion 120 so as to be arranged in a row in the left-right direction (X-axis direction) on the same plane.

[0028] The disc spring 110 is a disc-shaped component having a circular opening 111 in the center and having elasticity in the up-down direction (Z-axis direction). The disc spring 110 has a shape that gradually bulges in the up-down direction (Z-axis direction) from the outer periphery toward the inner periphery. That is, the disc spring 110 has a truncated cone shape having a top in the center. Thus, the disc spring 110 can be elastically deformed in the up-down direction (Z-axis direction) to reduce the up-down width by pressing its top (that is, the central part where the opening 111 is provided). In addition, the disc spring 110 can use its own elastic force to apply a high load to the object pressing the disc spring 110.

[0029] Note that the number and arrangement of the disc springs 110 are not limited to Figure 1 For example, in Figure 1 In the example shown, the elastic member 100 has six disc springs 110. However, the elastic member 100 is not limited thereto, and may have five or less, or seven or more disc springs 110. Figure 1 In the example shown, the multiple disc springs 110 of the elastic component 100 are arranged in a row in the length direction (X-axis direction), but not limited to this, the multiple disc springs 110 of the elastic component 100 can also be arranged in multiple rows in the length direction (X-axis direction).

[0030] In addition, Figure 1 In the example shown, the plurality of disc springs 110 of the elastic member 100 are arranged in a straight line, but the elastic member 100 is not limited thereto, and two adjacent disc springs 110 may be arranged offset in the width direction (Y-axis direction) of the elastic member 100. In this case, the elastic member 100 can arrange the same number of disc springs 110 in a shorter range in the length direction (X-axis direction).

[0031] The support portion 120 is a flat plate-shaped and rectangular frame-shaped portion. The support portion 120 is provided integrally with the plurality of disc springs 110 on the same plane as and around the plurality of disc springs 110, and supports the plurality of disc springs 110. The support portion 120 has a frame-shaped base 121, and supports the plurality of disc springs 110 within the frame of the base 121. Specifically, the support portion 120 has a connection portion 122 connecting the base 121 and the disc spring 110 for each of the plurality of disc springs 110 within the frame of the base 121. Figure 1 In the example shown, the support portion 120 is alternately provided with a connection portion 122 connecting the disc spring 110 to the portion on the positive side of the Y axis of the base 121, and a connection portion 122 connecting the disc spring 110 to the portion on the negative side of the Y axis of the base 121 in the left-right direction (X-axis direction).

[0032] Note that Figure 1 In the example shown, the base 121 has a rectangular frame shape with the left-right direction (X-axis direction) as the length direction. However, the present invention is not limited thereto, and the base 121 may also have a frame shape other than a rectangle (e.g., a square, a circle, etc.). In addition, the base 121 may also have a shape other than a frame shape (e.g., a linear shape).

[0033] The elastic member 100 is made of any metal material (for example, stainless steel). Note that the elastic member 100 can be formed into a member having a plurality of disc springs 110 and a support portion 120 by stamping a single metal plate. For example, in the present embodiment, as an example, the elastic member 100 is formed into a member having a plurality of disc springs 110 and a support portion 120 by stamping a stainless steel plate having a thickness of 0.5 [mm]. In addition, a plurality of elastic members 100 can also be manufactured at once by stamping a single metal plate.

[0034] The intermediate plate 20 is a flat plate-like member, and has a rectangular shape with the left-right direction (X-axis direction) as the longitudinal direction in a plan view. The intermediate plate 20 is made of any metal material (for example, stainless steel).

[0035] like Figure 1 and Figure 2 As shown, in the elastic device 10, the elastic member 100-1 disposed on the upper side (Z-axis positive side) is arranged so that the tops of all the disc springs 110 face downward. On the other hand, in the elastic device 10, the elastic member 100-2 disposed on the lower side (Z-axis negative side) is arranged so that the tops of all the disc springs 110 face upward.

[0036] And, if Figure 2As shown, the elastic device 10 is arranged between two elastic components 100 in such a manner that the intermediate plate 20 is sandwiched between the tops of multiple disc springs 110 facing downward and arranged on the upper side (positive side of the Z axis) and the tops of multiple disc springs 110 facing upward and arranged on the lower side (negative side of the Z axis).

[0037] Since the elastic member 100 according to one embodiment includes six disc springs 110 , although the elastic member 100 is thin as a whole, it is possible to obtain a load six times the load obtained by one disc spring 110 .

[0038] Furthermore, since the elastic member 100 according to one embodiment has a thin and flat shape as a whole, it can be disposed in a narrow gap, and a high load can be applied uniformly over a wide range in the gap.

[0039] In addition, since the elastic member 100 of one embodiment has a plurality of disc springs 110, the load obtained as a whole can be easily adjusted by adjusting the number, arrangement, shape, outer diameter, inner diameter, etc. of the disc springs 110. Figure 1 In the illustrated example, the plurality of disc springs 110 are formed to have the same shape and the same size as each other, but the present invention is not limited thereto, and the plurality of disc springs 110 may be formed to have different shapes and different sizes than each other.

[0040] Furthermore, in the elastic component 100 of one embodiment, since the plurality of disc springs 110 are supported by the support portion 120 , the plurality of disc springs 110 can be maintained in a state of being arranged at a predetermined position without being scattered, thereby facilitating the handling of the plurality of disc springs 110 .

[0041] In addition, in the elastic device 10 of one embodiment, since two elastic members 100 are overlapped, the height dimension of each disc spring 110 can be reduced, and at the same time, the overall deflection amount can be doubled. Note that in the elastic device 10 of one embodiment, by reducing the height dimension of each disc spring 110, the disc spring 110 can be made less likely to flip over.

[0042] In addition, in the elastic device 10 of one embodiment, two elastic members 100 are overlapped so that the tops of the plurality of disc springs 110 of the elastic member 100-1 on the upper side (Z-axis positive side) and the tops of the plurality of disc springs 110 of the elastic member 100-2 on the lower side (Z-axis positive side) face each other. Therefore, the elastic device 10 of one embodiment can make the load obtained as a whole equal to the load obtained by one elastic member 100, and at the same time make the overall deflection amount doubled.

[0043] Furthermore, since the elastic device 10 of one embodiment has a thin and flat shape as a whole, it can be installed in a narrow gap and a high load can be applied uniformly over a wide range in the gap.

[0044] In addition, in the elastic device 10 of one embodiment, since the intermediate plate 20 is provided between the two elastic components 100, the top of each disc spring 110 can be reliably and evenly pressed against the surface of the intermediate plate 20, that is, the load from each disc spring 110 can be reliably borne by the intermediate plate 20.

[0045] Furthermore, in the elastic device 10 according to one embodiment, since the intermediate plate 20 is provided between the two elastic members 100 , the overall thickness can be easily adjusted by adjusting the thickness of the intermediate plate 20 .

[0046] Note that, in the elastic device 10 of one embodiment, two elastic members 100 may be overlapped so that the bottoms of the plurality of disc springs 110 of the elastic member 100-1 on the upper side (Z-axis positive side) and the bottoms of the plurality of disc springs 110 of the elastic member 100-2 on the lower side (Z-axis positive side) face each other. In this case, the elastic device 10 of one embodiment can also make the load obtained as a whole equal to the load obtained by one elastic member 100, and at the same time make the overall deflection amount doubled.

[0047] In addition, in the elastic device 10 of one embodiment, two elastic members 100 may be overlapped so that the bottom of each of the plurality of disc springs 110 of the elastic member 100-1 on the upper side (positive side of the Z axis) and the top of each of the plurality of disc springs 110 of the elastic member 100-2 on the lower side (positive side of the Z axis) face each other. In this case, the elastic device 10 of one embodiment can make the load obtained as a whole twice that obtained by one elastic member 100, and at the same time make the overall deflection amount twice.

[0048] On the contrary, in the elastic device 10 of one embodiment, the tops of the plurality of disc springs 110 of the elastic member 100-1 on the upper side (Z-axis positive side) and the bottoms of the plurality of disc springs 110 of the elastic member 100-2 on the lower side (Z-axis positive side) may be mutually opposed, so that two elastic members 100 are overlapped. In this case, the elastic device 10 of one embodiment can also make the load obtained as a whole twice that obtained by one elastic member 100, and at the same time make the deflection amount of the whole twice.

[0049] (Other structural examples of the elastic device 10)

[0050] Figure 3It is an exploded perspective view showing another structural example of the elastic device 10 according to one embodiment. Figure 4 It is a partially enlarged side view showing another structural example of the elastic device 10 according to one embodiment.

[0051] Figure 3 and Figure 4 The elastic device 10 shown in the figure has a flat plate-shaped rigid body 30 at the uppermost part (the upper side of the elastic member 100-1) and the lowermost part (the lower side of the elastic member 100-2). Figure 4 The elastic device 10 shown has a Figure 1 The elastic device 10 shown is a structure sandwiched between two rigid bodies 30 (rigid bodies 30 - 1 and 30 - 2 ).

[0052] Each of the two rigid bodies 30 has a first surface 31 facing inward and facing the plurality of disc springs 110, and a second surface 32 which is the back side of the first surface, facing outward and facing the object to which the load is applied from the elastic device 10. Each of the two rigid bodies 30 is formed with a constant thickness using any metal material so as not to be easily elastically deformed.

[0053] Figure 4 The elastic device 10 shown includes two rigid bodies 30 , and can receive the load applied from the plurality of disc springs 110 via the entire first surfaces 31 of the two rigid bodies 30 , thereby evenly applying the load to the object via the entire second surfaces of the two rigid bodies 30 .

[0054] (Load Characteristics of the Elastic Device 10)

[0055] Figure 5 : is a table showing the analysis results of the load characteristics of the elastic device 10 according to one embodiment. Figure 6 Graph showing analysis results of the load characteristics of the elastic device 10 according to one embodiment.

[0056] Note that the elastic device 10 involved in the present analysis results has a length of 135 [mm] in the longitudinal direction (X-axis direction) and a width of 35 [mm] in the width direction (Y-axis direction).

[0057] In addition, the thickness of the elastic device 10 in the non-pressed state is 2.72 [mm], and the elastic device 10 according to the present analysis result is an extremely thin structure.

[0058] In the elastic device 10 according to the present analysis results, the height, outer diameter, and inner diameter of each disc spring 110 are adjusted so as to satisfy the following required performances (1) and (2).

[0059] ·When the displacement is 0.3[mm], the load is 930[N] (1)

[0060] ·When the displacement is 0.82[mm], the load is 1300[N] (2)

[0061] like Figure 5 and Figure 6 As shown, it was confirmed that the elastic device 10 involved in the present analysis results can obtain an extremely high load of 930 [N] when the thickness during pressing is 2.42 [mm] (that is, the displacement is 0.3 [mm]), and can meet the required performance.

[0062] In addition, if Figure 5 and Figure 6 As shown, it was confirmed that the elastic device 10 involved in the present analysis results can obtain an extremely high load of 1300 [N] when the thickness during pressing is 1.9 [mm] (that is, the displacement is 0.82 [mm]), and can meet the required performance.

[0063] Note that Figure 5 and Figure 6 As shown, the elastic device 10 involved in the analysis result has a first load characteristic from 0 to 0.3 [mm] (an example of a "first value"), and a second load characteristic from 0.3 [mm] to 0.82 [mm] (an example of a "second value"), and the increase rate of the load of the first load characteristic is greater than the increase rate of the load of the second load characteristic. That is, the elastic device 10 involved in the analysis result can obtain a high load with a small displacement after the start of pressing.

[0064] (One example of use of the elastic member 100)

[0065] Figure 7 FIG. 1 is a diagram showing an example of use of an elastic member 100 according to an embodiment. Figure 7 As shown, since a plurality of disc springs 110 are connected by a support portion 120 in an elastic component 100 of one embodiment, three disc springs 110 can be overlapped with another three disc springs 110 by bending them in the middle position in the length direction (X-axis direction), thereby doubling the overall thickness for use.

[0066] (A Modification of the Elastic Member 100)

[0067] Figure 8 FIG. 1 is a diagram showing an elastic member 100A which is a modified example of the elastic member 100 according to one embodiment.

[0068] The elastic member 100A is a metal, flat plate-shaped member, with the left-right direction (X-axis direction) as the longitudinal direction in a plan view. The elastic member 100A includes a first disc spring row L1, a second disc spring row L2, and a support portion 120A.

[0069] The first disc spring row L1 and the second disc spring row L2 are arranged side by side with the support portion 120A therebetween. The first disc spring row L1 is arranged on the positive side of the Y axis from the support portion 120A. The second disc spring row L2 is arranged on the negative side of the Y axis from the support portion 120A.

[0070] Each of the first disc spring row L1 and the second disc spring row L2 includes a plurality of disc springs 110 arranged in a row in the left-right direction (X-axis direction) on the same plane. The disc springs 110 included in the elastic member 100A are the same as the disc springs 110 included in the elastic member 100 .

[0071] Note that in the first disc spring array L1 and the second disc spring array L2, the number of disc springs 110 is not limited to Figure 8 For example, in Figure 8 In the example shown, the first disc spring row L1 and the second disc spring row L2 include five disc springs 110. However, the present invention is not limited thereto, and the first disc spring row L1 and the second disc spring row L2 may include four or less, or six or more disc springs 110.

[0072] In addition, Figure 8 In the example shown, in the first disc spring row L1 and the second disc spring row L2, a plurality of disc springs 110 are arranged in a straight line, but the present invention is not limited thereto. In the first disc spring row L1 and the second disc spring row L2, two adjacent disc springs 110 may be arranged offset in the width direction (Y-axis direction). In this case, the first disc spring row L1 and the second disc spring row L2 can be arranged with the same number of disc springs 110 in a shorter range in the length direction (X-axis direction).

[0073] The support portion 120A is provided integrally with the disc springs 110 on the same plane as the disc springs 110 and between the first disc spring row L1 and the second disc spring row L2, and supports the disc springs 110. The support portion 120A has a base portion 121 extending linearly in the left-right direction (X-axis direction), and supports the disc springs 110 on both outer sides of the base portion 121. Specifically, the support portion 120A has a connection portion 122 connecting the base portion 121 and the disc spring 110 for each of the disc springs 110 on both outer sides of the base portion 121. Figure 8In the example shown, the support portion 120A has a plurality of connection portions 122 for connecting the plurality of disc springs 110 included in the first disc spring column L1 to the base 121 on the first disc spring column L1 side (positive side of the Y axis) relative to the base 121, and has a plurality of connection portions 122 for connecting the plurality of disc springs 110 included in the second disc spring column L2 to the base 121 on the second disc spring column L2 side (negative side of the Y axis) relative to the base 121.

[0074] The elastic component 100A is made of any metal material (for example, stainless steel). Note that the elastic component 100A can be formed into a component having a plurality of disc springs 110 and a support portion 120A by stamping a sheet of metal. For example, in the present embodiment, as an example, the elastic component 100A is formed into a component having a plurality of disc springs 110 and a support portion 120A by stamping a stainless steel plate having a thickness of 0.5 [mm]. In addition, a plurality of elastic components 100A can also be manufactured at once by stamping a sheet of metal.

[0075] The elastic device 10 according to one embodiment may use the elastic member 100A instead of the elastic member 100. In this case, the elastic device 10 according to one embodiment can also achieve the same effects as when the elastic member 100 is used.

[0076] (A modified example of the elastic device 10)

[0077] Fig. 9 1 is a diagram showing a modification of the elastic device 10 according to one embodiment. In the elastic device 10 according to one embodiment, two elastic members 100 which are identical members may be overlapped without their front and back surfaces being reversed.

[0078] For example, Fig. 9 As shown, in an elastic device 10 of one embodiment, two elastic components 100 can be overlapped by sandwiching the intermediate plate 20 in such a manner that the tops of the multiple disc springs 110 of the elastic component 100-1 on the upper side (positive side of the Z axis) are each facing upward, and the tops of the multiple disc springs 110 of the elastic component 100-2 on the lower side (negative side of the Z axis) are also facing upward.

[0079] In this case, the elastic device 10 according to one embodiment can make the load obtained as a whole equal to the load obtained by one elastic member 100 and at the same time double the amount of overall deflection.

[0080] As mentioned above, although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims.

[0081] For example, the elastic members 100 and 100A may be used alone or assembled into the elastic device 10 for use.

[0082] In addition, the elastic device 10 may also have a structure in which three or more elastic members 100, 100A are overlapped. In this case, the elastic device 10 may have an intermediate plate 20 between two overlapping elastic members 100, 100A.

[0083] This international application claims priority based on Japanese Patent Application No. 2022-089903 filed on June 1, 2022, and all the contents of the Japanese Patent Application are incorporated herein by reference.

[0084] Description of Reference Numerals

[0085] 10 Elastic device

[0086] 20 Middle plate

[0087] 30, 30-1, 30-2 Rigid body

[0088] 100, 100-1, 100-2, 100A elastic parts

[0089] 110 disc spring

[0090] 111 Opening

[0091] 120, 120A Support

[0092] 121 base

[0093] 122 Connection

Claims

1. An elastic component, which is in the shape of a plate, comprising: A plurality of disc springs are arranged in a plane; as well as The support portion is provided on the plane and around the plurality of disc springs, is integrally provided with the plurality of disc springs, and supports the plurality of disc springs.

2. The elastic member according to claim 1, wherein The support portion has a frame-shaped base portion, and the plurality of disc springs are held within the frame of the base portion.

3. The elastic member according to claim 2, wherein: The base has a rectangular frame shape.

4. The elastic member according to claim 3, wherein: The plurality of disc springs are arranged in a row along a longitudinal direction of the base portion within a frame of the base portion of the support portion.

5. The elastic member according to claim 1, wherein The support portion has a linear base portion, and the plurality of disc springs are held on both outer sides of the base portion.

6. The elastic member according to claim 5, wherein: The plurality of disc springs are arranged on both outer sides of the base portion of the support portion along the length direction of the base portion.

7. An elastic device comprising: Two elastic members according to any one of claims 1 to 6 are arranged overlapping each other.

8. The elastic device according to claim 7, wherein: The two elastic members are arranged to overlap each other so that top portions of the plurality of disc springs included in one of the two elastic members and top portions of the plurality of disc springs included in the other of the two elastic members face each other.

9. The elastic device according to claim 8, wherein: The elastic device comprises: an intermediate plate, which is arranged between the two elastic components.

10. The elastic device according to claim 7, wherein: The two elastic members are arranged to overlap each other so that the tops of the plurality of disc springs included in one of the two elastic members and the tops of the plurality of disc springs included in the other of the two elastic members face the same direction.

11. The elastic device according to claim 10, wherein: The elastic device comprises: an intermediate plate, which is arranged between the two elastic components.

12. The elastic device according to claim 7, wherein: The elastic device has: A first load characteristic from when the displacement amount changes from 0 to when it reaches a first value; and a second load characteristic from the first value to the second value of the displacement, The load increase rate of the first load characteristic is greater than the load increase rate of the second load characteristic.

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