JP6411456B2 - Spring member and pressing unit - Google Patents

Description

  The present invention relates to a spring member and a pressing unit using the spring member.

  A spring member is known that is installed between a first pressed body and a second pressed body and pressurizes one or both of them. Spring members are used in various devices. For example, a power conversion device (pressing unit) having a laminated structure configured by alternately laminating semiconductor modules and cooling pipes for cooling the semiconductor modules is known (see, for example, Patent Document 1).

  This power conversion device is provided at the end of the stacking direction of the semiconductor module and the cooling pipe between a spring member that generates a pressing force along the stacking direction and between the spring member and the stacking structure. A contact plate for generating a uniform pressing force. According to the power conversion device having such a configuration, the adjacent semiconductor module and the cooling pipe are brought into close contact with each other by the pressing force of the spring member, so that the semiconductor module can be sufficiently cooled.

  By the way, since the spring member which patent document 1 discloses is the structure which curved the strip | belt-shaped member in the arc shape, the load with respect to a to-be-pressed body does not apply to the whole surface. If it is going to apply a load to the whole surface to a pressed object using the spring member which patent documents 1 disclose, it is necessary to arrange a plurality of spring members, and if it does not attach with high-precision positioning Don't be. For this reason, the spring member which can apply a load to the whole surface with respect to a to-be-pressed body was calculated | required.

  In order to satisfy this demand, a spring member (for example, refer to Patent Document 2) having a peak portion and a valley portion, and a spring member (for example, a plurality of connection terminals having contact portions that rise from the base portion and extend) In addition, C-shaped two slits are formed in a flat base portion so that the openings of the slits face each other, and are separated from the base portion by the slits and are opposite to each other from the base portion. A spring member having two spring tongues rising in the direction and extending (for example, see Patent Document 4) has been proposed.

JP 2007-166820 A JP 2009-257491 A JP 2009-193883 A JP-A-2005-302729

  However, the spring member disclosed in Patent Document 2 is greatly deformed in the longitudinal direction (the direction in which the peaks and valleys are continuous) when the pressed body is pressed, and the pressed body slides with respect to the spring member, There is a possibility that the position at which the spring member presses the pressed body changes for each pressing unit. For this reason, there exists a possibility that the load which a spring member applies to a to-be-pressed body may vary for every press unit.

  Further, in the spring member disclosed in Patent Document 3, when the pressed body is pressed, the base portion is lifted due to the deformation of the contact portion, and the load applied to the pressed body by the contact portion may become unstable. Further, the spring member disclosed in Patent Document 4 is such that when the pressed body is pressed, a load is applied to the base end (end on the base portion side) due to the deformation of the two spring tongue pieces, and the base end is lifted up. There is a possibility that the load applied to the pressed body by the tongue piece becomes unstable.

  This invention is made | formed in view of the above, Comprising: It aims at providing the spring member and press unit which can apply the stable load with respect to a to-be-pressed body.

  In order to solve the above-described problems and achieve the object, a spring member according to the present invention includes a base, a flat plate, a first extending portion that rises and extends with respect to the flat plate, and the flat plate. A plurality of second extending portions extending from the portion different from the first extending portion in a direction opposite to the extending direction of the first extending portion and rising from the flat plate portion. And a plurality of connecting portions that respectively connect the base portion and the flat plate portion, wherein the plurality of functional portions are arranged in a staggered manner, and the functional portion includes a main surface of the flat plate portion and The first extending portion is orthogonal to the extending direction from the flat plate portion and has a symmetrical shape with respect to a plane passing through the central portion of the flat plate portion, and the first and second extending portions are A tapered shape is formed from the base end connected to the flat plate portion toward the tip end, and the connecting portion is a connection portion with the flat plate portion. Width in may be smaller than the width of said plate.

  In the spring member according to the present invention, the first extending portion extends in a first direction parallel to a main surface of the flat plate portion, and the second extending portion is The connecting portion extends in a direction opposite to the first direction, and the connecting portion is directed from a part of the flat plate portion to a second direction that is parallel to the main surface and substantially orthogonal to the first direction. It has at least one of the 1st protrusion part which protrudes, and the 2nd protrusion part which protrudes toward a direction opposite to the said 2nd direction from a part of said flat plate part, It is characterized by the above-mentioned.

  In the above invention, the spring member according to the present invention is the second flat plate portion and a portion of the second flat plate portion facing the first direction or the direction opposite to the first direction. A third extending portion extending up and extending with respect to the two flat plate portions, and a plurality of second functional portions respectively provided at both ends in the first direction, and a part of the second flat plate portion A third projecting portion projecting toward the second direction; and a fourth projecting portion projecting from a part of the second flat plate portion in a direction opposite to the second direction. The portion supports the plurality of third and fourth protrusions.

  In the spring member according to the present invention, in the above invention, the first and second extending portions have a substantially S shape in which a distal end side is curved in a manner opposite to a curved manner on a proximal end side. It is characterized by.

  The pressing unit according to the present invention includes a first pressed body, a second pressed body that is disposed to face the first pressed body, the first pressed body, and the second pressed body. And a spring member according to the above invention, which is arranged between the pressed body and applies pressure to the first pressed body and the second pressed body.

  Moreover, the pressing unit according to the present invention includes a plurality of the spring members in the above invention, and the plurality of the spring members are overlapped to be between the first pressed body and the second pressed body. It arrange | positions at the feature.

  According to the present invention, there is an effect that a stable load can be applied to the pressed body.

FIG. 1 is a side view schematically showing a pressing unit using a spring member according to Embodiment 1 of the present invention. FIG. 2 is a plan view showing the configuration of the spring member according to the first embodiment of the present invention. FIG. 3 is a side view in the direction of arrow A in FIG. FIG. 4 is a schematic diagram illustrating a configuration of a main part of the spring member according to the first embodiment of the present invention. 5 is a cross-sectional view taken along line BB in FIG. FIG. 6 is a cross-sectional view illustrating the configuration of the main part of the spring member according to the first modification of the first embodiment of the present invention. FIG. 7: is sectional drawing which shows the structure of the principal part of the spring member concerning the modification 2 of Embodiment 1 of this invention. FIG. 8 is a schematic diagram illustrating a configuration of a pressing unit using a spring member according to Modification 3 of Embodiment 1 of the present invention. FIG. 9: is sectional drawing which shows the structure of the principal part of the press unit using the spring member concerning the modification 3 of Embodiment 1 of this invention. FIG. 10 is a plan view showing a configuration of a spring member according to Modification 4 of Embodiment 1 of the present invention. FIG. 11: is a top view which shows the structure of the spring member concerning the modification 5 of Embodiment 1 of this invention. FIG. 12 is a schematic diagram illustrating a configuration of a main part of the power conversion device according to the second embodiment of the present invention. FIG. 13 is a schematic diagram showing a configuration of a main part of the electric double layer capacitor according to the third embodiment of the present invention.

  In the following description, a pressing unit using a spring member will be described as a mode for carrying out the present invention (hereinafter referred to as “embodiment”). Moreover, this invention is not limited by this embodiment. Furthermore, the same code | symbol is attached | subjected to the same part in description of drawing. Furthermore, the drawings are schematic, and it should be noted that the relationship between the thickness and width of each member, the ratio of each member, and the like are different from the actual ones. Moreover, the part from which a mutual dimension and ratio differ also in between drawings.

(Embodiment 1)
FIG. 1 is a side view schematically showing a pressing unit using a spring member according to Embodiment 1 of the present invention. In the pressing unit according to the first embodiment of the present invention, the spring member 1 is arranged between the first pressed body 201 and the second pressed body 202 facing each other. The spring member 1 applies pressure to both the first pressed body 201 and the second pressed body 202 by elastic force.

  FIG. 2 is a plan view showing the configuration of the spring member according to the first embodiment. FIG. 3 is a side view in the direction of arrow A in FIG. FIG. 4 is a schematic diagram illustrating a configuration of a main part of the spring member according to the first embodiment. 5 is a cross-sectional view taken along line BB in FIG. The spring member 1 is formed using flat spring steel made of carbon tool steel (SK material), stainless steel (SUS), or the like.

  The spring member 1 protrudes from a plurality of first function parts 10 (function parts), two second function parts 11 and 12, and a part of the first function part 10 and the second function parts 11 and 12, respectively. And a support portion 15 that supports the plurality of first function portions 10 and the two second function portions 11 and 12 collectively by supporting the protrusion portions 13 and 14. The spring member 1 has a configuration in which a support portion 15 that forms a base portion and a plurality of functional portions (first functional portion 10 and second functional portions 11 and 12) are coupled by projecting portions 13 and 14 that are coupling portions. . Hereinafter, the support portion is described as a base portion, and the protruding portion is described as a connection portion.

  The first functional unit 10 includes a first flat plate portion 101 (flat plate portion) having a flat plate shape and a first direction parallel to the main surface of the first flat plate portion 101 from a part of the first flat plate portion 101 (see FIG. 2 extending in the X direction (negative direction)) with respect to the first flat plate portion 101, and a first direction from a part of the first flat plate portion 101. And a second extending portion 103 that rises and extends with respect to the first flat plate portion 101 in the opposite direction (forward direction). The first functional unit 10 is orthogonal to the first direction and has a symmetrical shape with respect to a plane that passes through the central portion of the first flat plate portion 101. In the first extension portion 102, “the first extension portion 102 extends in the first direction toward the first flat plate portion 101” means that the first extension portion 102 is in the first direction. Thus, it means that it extends in a direction including the direction extending from the first flat plate portion 101 as a component. The same applies to the second extending portion 103.

  The first extending portion 102 and the second extending portion 103 are substantially trapezoidal in a plan view shown in FIG. Further, the first extension portion 102 and the second extension portion 103 rise from the first flat plate portion 101 in an arc shape with a predetermined curvature in a side view shown in FIG.

  The second functional unit 11 is provided at one end of the spring member 1 in the first direction. The second functional unit 11 includes a second flat plate portion 111 having a flat plate shape and a portion of the second flat plate portion 111 in the first direction or the direction opposite to the first direction. And a third extending portion 112 that rises and extends.

  The second functional unit 12 is provided at the other end of the spring member 1 in the first direction. The second functional unit 12 includes a second flat plate portion 121 having a flat plate shape, and the second flat plate portion 121 from a part of the second flat plate portion 121 toward the first direction or the direction opposite to the first direction. And a third extension part 122 that rises and extends. Hereinafter, the first flat plate portion 101 and the second flat plate portions 111 and 121 may be simply referred to as the flat plate portions 101, 111, and 121.

  As shown in a side view shown in FIG. 3, the second functional units 11 and 12 are respectively arranged with respect to the second flat plate portions 111 and 121 along the first direction so that the third extending portions 112 and 122 face each other. Standing up.

  The protruding portion 13 protrudes from a part of the first flat plate portion 101 in a second direction (Y direction in FIG. 2) that is parallel to the first flat plate portion 101 and substantially orthogonal to the first direction. And a second protrusion 13b protruding from a part of the first flat plate part 101 in the direction opposite to the second direction.

  The first projecting portion 13a and the second projecting portion 13b extend in a flat plate shape, the plate thickness is the same as the plate thickness of the first flat plate portion 101, and the main surface is the same as the main surface of the first flat plate portion 101. It is on a plane.

In the first protrusion 13 a and the second protrusion 13 b, the width d ₁ in the first direction at the connection portion with the first flat plate portion 101 is smaller than the width d _{2 in} the first direction of the first flat plate portion 101. Therefore, the two straight lines L1 and L2 that pass through the base ends of the first flat plate portion 101, the first extension portion 102, and the second extension portion 103 and are parallel to the second direction are the two straight lines L1. , L2 includes a protrusion 13.

  The protruding portion 14 protrudes from a part of the second flat plate portions 111 and 121 in the second direction and in the direction opposite to the second direction. The protruding portion 14 is opposite to the second direction from the third protruding portion 14a protruding from a part of the second flat plate portions 111 and 121 toward the second direction, respectively, and from the portion of the second flat plate portions 111 and 121, respectively. A fourth projecting portion 14b projecting in the direction.

  The support portion 15 supports the first functional portion 10 and the second functional portion 10 and the second functional portion 10 by supporting the protrusions 13 and 14 of the first functional portion 10 and the second functional portions 11 and 12 arranged in a staggered (orthogonal lattice) shape, respectively. The function units 11 and 12 are supported together. The support portion 15 has a substantially strip shape, the plate thickness is the same as the plate thickness of the protruding portions 13 and 14, and the main surface is on the same plane as the main surfaces of the protruding portions 13 and 14.

  The support portion 15 includes a first support portion 15a extending in a zigzag shape that repeats unevenness along the first direction, and a second support portion extending in a zigzag shape opposite to the first support portion 15a. 15b and a side of the first support portion 15a different from the side where the second support portion 15b is disposed, and the first support portion 15a side extends in a zigzag shape opposite to the first support portion 15a. The third support portion 15c is provided on a side different from the side on which the first support portion 15a of the second support portion 15b is disposed, and the second support portion 15b side is a zigzag shape opposite to the second support portion 15b. And a fourth support portion 15d extending in the manner described above.

  The 1st support part 15a and the 2nd support part 15b support the 1st protrusion part 13a and the 2nd protrusion part 13b in a corner | angular part, respectively. The 3rd support part 15c supports the 1st protrusion part 13a with a concave deep part. The fourth support portion 15d supports the second protruding portion 13b with a concave deep portion.

  As shown in FIG. 1, when the spring member 1 is disposed between the first pressed body 201 and the second pressed body 202, the first extending portion 102, the second extending portion 103, and The third extending portions 112 and 122 are in contact with the first pressed body 201 at both ends, and the flat plate portions 101, 111, 121 and the support portion 15 are in contact with the second pressed body 202. When the distance between the first pressed body 201 and the second pressed body 202 is reduced, the first extending portion 102, the second extending portion 103, and the third extending portions 112, 122 It is elastically deformed, and pressure is applied to both the first pressed body 201 and the second pressed body 202 by the elastic force generated by the elastic deformation.

  The first function unit 10 and the second function units 11 and 12 define boundaries between the flat plate units 101, 111, and 121 and the first extension unit 102, the second extension unit 103, and the third extension units 112 and 122. Each elastically deforms as a fulcrum. Since the load due to the elastic deformation of the first extension portion 102, the second extension portion 103, and the third extension portions 112 and 122 is the largest at this boundary, the first extension portion 102 and the second extension portion 103 are the same. When the third extending portions 112, 122 are elastically deformed, the boundaries between the flat plate portions 101, 111, 121 and the first extending portion 102, the second extending portion 103, and the third extending portions 112, 122 are It becomes the maximum stress position.

Here, as described above, the width _{d 2} of the flat plate portion 101, larger than the width _{d 1} of the first projecting portion 13a and the second projecting portion 13b, a flat plate portion 101 first protrusion 13a and second protrusion The connection part with the part 13b has shifted | deviated from the maximum stress position. For this reason, almost no load is applied to the protruding portion 13 due to the elastic deformation of the first functional portion 10. Thereby, durability with respect to the elastic deformation of the 1st function part 10 of the protrusion part 13 can be improved.

  In addition, since the load due to the elastic deformation of the first functional unit 10 is hardly applied, the rising length of the first extending portion 102 and the second extending portion 103, for example, the length in the first direction, the flat plate portion 101, and the like. The degree of freedom of design for the height from the height is improved. In other words, the rising heights of the first extending portion 102 and the second extending portion 103 can be designed without considering the load on the protruding portion 13. Further, if the width of the first flat plate portion 101 in the first direction is reduced, the arrangement region of the first extension portion 102 and the second extension portion 103 can be increased.

  In addition, in the protrusion part 14, it is the width | variety of the 3rd protrusion part 14a and the 4th protrusion part 14b, Comprising: The width | variety of the 1st direction in the connection part with the 2nd flat plate part 111,121 is the 2nd flat plate part 111, If it is smaller than the width of 121 in the first direction, as described above, almost no load is applied to the protruding portion 14 due to the elastic deformation of the first functional portion 10, and the second functional portions 11 and 12 of the protruding portion 14 are not affected. This is preferable because durability against elastic deformation can be improved.

  Moreover, since the 1st function part 10 has symmetry, even if it is a case where the 1st extension part 102 and the 2nd extension part 103 each elastically deform, the stress added to the flat plate part 101 is canceled. The floating of the flat plate portion 101 can be suppressed.

  By providing a plurality of first function parts 10, each first function can be compared with a structure in which the same load is applied using an arcuate spring member (for example, a spring member having only one first function part 10). The rising heights of the first extension part 102 and the second extension part 103 of the part 10 can be lowered, and the overall height of the spring member 1 can be reduced.

  Further, since the plurality of first function parts 10 are arranged in a staggered manner and the first extension part 102 and the second extension part 103 have a substantially trapezoidal shape, it is compared with the case where a rectangular extension part is arranged. Thus, the spring member 1 can be reduced in size and efficiency.

  Moreover, the surface pressure at the time of applying a load to the 1st to-be-pressed body 201 and the 2nd to-be-pressed body 202 can be equalize | homogenized by having arrange | positioned the 1st functional part 10 and having symmetry. At this time, the first extending portion 102 and the second extending portion 103 have a substantially trapezoidal shape that tapers from the proximal end to the distal end of the flat plate portion 101, thereby uniformizing the stress from the pressed body, The spring constant which the 1st function part 10 has can be reduced.

  Moreover, since the 1st function part 10 and the 2nd function parts 11 and 12 are comprised as the spring member 1 integrated by the support part 15, it is not necessary to position a some function part for every function part, The pressing unit can be easily disposed between the first pressed body 201 and the second pressed body 202.

  Furthermore, the elastic force of the 1st function part 10 and the 2nd function parts 11 and 12 can be enlarged by laminating | stacking the some spring member 1 in the direction orthogonal to the 1st and 2nd direction. At this time, if the stacked-side spring member 1 (lower-layer spring member 1) and the stacked-side spring member 1 (upper-layer spring member 1) are displaced in the second direction, the first spring member 1 of the lower layer is moved. Since the side surfaces of the extension portion 102, the second extension portion 103, and the third extension portions 112 and 122 abut on the side surface of the support portion 15 of the upper layer spring member 1, each spring member of the lower layer and the upper layer The shift of the relative position of 1 can be suppressed.

  According to the first embodiment described above, a plurality of flat plate portions 101 having a flat plate shape, and a first extending portion 102 and a second extending portion 103 that rise and extend with respect to the flat plate portion 101. The first functional unit 10, the width of the first direction is smaller than the width of the flat plate portion 101 in the first direction, and the plurality of first functional units 10 are supported by supporting the plurality of protruding portions 13. And the support portion 15 that supports the first functional portions 10 arranged in an orthorhombic lattice, so that the first pressed body 201 and the second pressed body 201 are provided. A stable load can be applied to the pressed body 202.

  In addition, in Embodiment 1 mentioned above, even if it is the structure which does not have the 2nd function parts 11 and 12, it is applicable. That is, the some 1st function part 10 may be arrange | positioned, and this some 1st function part 10 may be supported by the support part 15 via the protrusion part 13. FIG.

  In the first embodiment described above, the first flat plate portion 101 has been described as having an octagonal shape having at least four end portions in the first and second directions (X and Y directions) orthogonal to each other. As long as four end portions are provided in the first and second directions substantially orthogonal to each other, a polygonal shape such as a quadrangular shape may be used, or a circle or an ellipse may be formed.

  Further, in the first embodiment described above, the first extending portion 102 and the second extending portion 103 may have the same shape, or may have different sizes and curved forms. . It is preferable to design appropriately depending on how the load is applied to the pressed body. Note that the same shape means the same shape in design and includes manufacturing errors.

(Modification 1 of Embodiment 1)
FIG. 6 is a cross-sectional view illustrating the configuration of the main part of the spring member according to the first modification of the first embodiment. In the first embodiment described above, the first extending portion 102, the second extending portion 103, and the third extending portions 112, 122 have been described as having their leading ends on the rising side having an arc shape along the rising. However, like the 1st extension part 102a and the 2nd extension part 103a concerning this modification 1, it is a mode contrary to the curve mode of a base end part (end part on the side connected to the 1st flat plate part 101). It may be a curved substantially S-shape. Since the first extending portion 102a and the second extending portion 103a are in contact with the first pressed body 201, the first extending portion 102a and the second extending portion 103a are damaged by the contact with the first pressed body 201. It becomes possible to suppress more reliably as compared with the first mode.

(Modification 2 of Embodiment 1)
FIG. 7 is a cross-sectional view illustrating the configuration of the main part of the spring member according to the second modification of the first embodiment. In the first embodiment described above, the first extending portion 102, the second extending portion 103, and the third extending portions 112, 122 are described as rising in an arc shape with a predetermined curvature. Like the 1st extension part 102b concerning the modification 2, and the 2nd extension part 103b, even if it extends in the shape of a flat plate from the base end part (the end part on the side connected to the first flat plate part 101). Good. In other words, the first extension portion 102b and the second extension portion 103b according to the second modification have a shape extending linearly from the base end portion when viewed from the direction orthogonal to the cut surface shown in FIG. ing.

(Modification 3 of Embodiment 1)
FIG. 8 is a schematic diagram illustrating a configuration of a pressing unit using a spring member according to the third modification of the first embodiment. FIG. 9 is a cross-sectional view illustrating the configuration of the main part of the pressing unit using the spring member according to the third modification of the first embodiment. In the first embodiment described above, the first extension part 102 and the second extension part 103 are arranged symmetrically in the first function part 10, while in the second function parts 11 and 12, the third extension part. Since only 112 and 122 are present, the second flat plate portions 111 and 121 slightly float according to the elastic deformation of the third extending portions 112 and 122. In the third modification, the spring member 1 is fixed to the pressed body by using the floating of the second flat plate portions 111 and 121 of the second functional portions 11 and 12.

  In the pressing unit according to the third modification of the first embodiment, the spring member 1 is disposed between the first pressed body 203 and the second pressed body 204 that face each other. The spring member 1 applies pressure to both the first pressed body 203 and the second pressed body 204 by elastic force.

  In the third modification, the upper surface of the second pressed body 204 that is a surface in contact with the first flat plate portion 101 and the second flat plate portions 111 and 121 protrudes from both end portions of the upper surface and faces each other. Claw portions 204a and 204b that are substantially L-shaped in a side view that is bent in the direction are provided. In the second modification, the distance between the claw portions 204a and 204b and the length of the spring member 1 in the first direction will be described as being substantially equal.

  When the distance between the 1st to-be-pressed body 203 and the 2nd to-be-pressed body 204 is made small in the 2nd function parts 11 and 12, the spring member 1 will become the 3rd extension parts 112 and 122. The second flat plate portions 111 and 121 are lifted by elastic deformation and elastic force generated by the elastic deformation. At this time, the raised second flat plate portions 111 and 121 are engaged with the claw portions 204a and 204b, respectively. For example, the 2nd flat plate part 121 shown in FIG. 8 will be in the state which contacted and latched the nail | claw part 204a. Thereby, in a state where the pressing unit is assembled, the spring member 1 is fixed to the second pressed body 204 by the second flat plate portions 111 and 121 and the claw portions 204a and 204b.

  In the above-described first embodiment and the third modification of the first embodiment, the two second functional units 11 and 12 are described. However, the second functional unit 11 and the second functional unit have three or more second functional units. May be. If a plurality of second function parts are provided, the spring member 1 can be more firmly fixed to the second pressed body 204.

(Modification 4 of Embodiment 1)
FIG. 10 is a plan view showing the configuration of the spring member according to the fourth modification of the first embodiment. In Embodiment 1 described above, the first extending portion 102, the second extending portion 103, and the third extending portions 112 and 122 have been described as having a substantially trapezoidal shape in plan view. As long as the length in the second direction decreases from the base end connected to 101 to the front end, for example, the extension portion according to Modification 4 has a triangular shape in plan view. There may be.

  The spring member 1a according to the modification 4 includes a plurality of first function parts 16 (function parts), two second function parts 17 and 18, and a part of the first function part 16 and the second function parts 17 and 18. Projecting portions 13 and 14 projecting from the first and second support portions 15 and 14, respectively, by supporting the projecting portions 13 and 14, and supporting the first functional portion 16 and the second functional portions 17 and 18 collectively.

  The first functional unit 16 has a flat plate-shaped first flat plate portion 161 (flat plate portion) and a part from the first flat plate portion 161 in a first direction parallel to the main surface of the first flat plate portion 161. A first extending portion 162 rising and extending with respect to the first flat plate portion 161, and the first flat plate portion from a part of the first flat plate portion 161 in a direction opposite to the first direction. And a second extending portion 163 that rises and extends with respect to 161.

  The first extension part 162 and the second extension part 163 have a triangular shape in plan view. Further, the first extending portion 162 and the second extending portion 163 rise from the first flat plate portion 161 in an arc shape with a predetermined curvature.

  The protruding portion 13 has a first protruding portion 13a protruding from a part of the first flat plate portion 161 toward a second direction substantially orthogonal to the first direction, and the second protruding portion 13b is a first protruding portion 13b. Projecting from a part of the flat plate portion 161 in the direction opposite to the second direction.

  The 2nd function part 17 is provided in one edge part of the 1st direction of the spring member 1a. The second functional unit 15 includes a second flat plate portion 171 having a flat plate shape, and the second flat plate portion 171 from a part of the second flat plate portion 171 toward the first direction or the direction opposite to the first direction. And a third extending portion 172 that rises and extends.

  The 2nd function part 18 is provided in the other edge part of the 1st direction of the spring member 1a. The second functional unit 16 includes a second flat plate portion 181 having a flat plate shape, and the second flat plate portion 181 from a part of the second flat plate portion 181 toward the first direction or the direction opposite to the first direction. And a third extending portion 182 that rises and extends.

  The third extending portions 172 and 182 have a triangular shape in plan view. Further, the third extending portions 172 and 182 rise from the second flat plate portions 171 and 181 in an arc shape with a predetermined curvature.

  The protruding portion 14 has a first protruding portion 14a protruding from a part of the second flat plate portions 171 and 181 in a second direction substantially orthogonal to the first direction, and a second protruding portion 14b. , Projecting from a part of the second flat plate portions 171 and 181 in the direction opposite to the second direction.

(Modification 5 of Embodiment 1)
FIG. 11 is a plan view showing the configuration of the spring member according to the fifth modification of the first embodiment. In Embodiment 1 mentioned above, although the support part 15 demonstrated as what supports the both ends of the 1st function part 10 via the protrusion part 13 (1st protrusion part 13a and 2nd protrusion part 13b), 2nd The first functional unit 10 located at both ends in the direction of the direction may have a protruding portion only on the side of the first functional unit 10 adjacent in the second direction. Thus, a part may support only one end side of the first functional unit 10.

  In the spring member 1b according to the modified example 5, a part of the plurality of first functional parts 10 (functional parts) is connected to the protruding part 13 (the first protruding part 13a and the second protruding part 13b), and The other 1st function part 10 is connected with either one of the 1st protrusion part 13a and the 2nd protrusion part 13b. Specifically, in the fifth modified example, the first functional portions 10 positioned at both ends in the second direction are the first projecting portions 13 a or the second projecting portions only on the side adjacent to the other first functional portions 10. One of the protrusions of the part 13b is provided.

  The support part 150 supports the plurality of first function parts 10 in a lump by supporting the first protrusion part 13 a and / or the second protrusion part 13 b connected to the first function part 10. The support portion 150 includes a first support portion 15a extending in a zigzag shape that repeats uneven shapes along the first direction, and a second support portion extending in a zigzag shape opposite to the first support portion 15a. 15b. In the fifth modification, the support portion 150 does not include the third support portion 15c and the fourth support portion 15d described above.

  According to the fifth modification, the spring member can be reduced in size in the second direction as compared with the spring member 1 according to the first embodiment described above. Furthermore, by adopting a configuration that does not include the second functional portions 11 and 12, it is possible to provide a spring member that is reduced in size in the first and second directions.

(Embodiment 2)
Next, a second embodiment of the present invention will be described. FIG. 12 is a schematic diagram illustrating a configuration of a main part of the power conversion device according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same component as the component mentioned above in FIG. In the second embodiment, a power conversion device that is a pressing unit will be described as an application example of the spring member 1. The power conversion device 300 shown in the figure is a device that generates a drive current that flows to a travel motor for an electric vehicle, for example. In addition, although the following example demonstrates as what was provided with the spring member 1 of the above-mentioned Embodiment 1, you may use the spring member concerning the modifications 1, 3, and 4 of Embodiment 1. FIG.

  The power conversion device 300 includes a semiconductor stacked unit (first pressed body) 302 including semiconductor elements, a spring member 1 that presses the semiconductor stacked unit 302 from one side surface, and the semiconductor stacked unit 302 and the spring member 1. A flat contact plate 304 interposed therebetween, and a housing (second pressed body) 305 that accommodates the semiconductor stacked unit 302, the spring member 1, and the contact plate 304 are provided. The power conversion device 300 includes a control circuit for controlling the semiconductor module 321 and the like in addition to the illustration.

  The semiconductor lamination unit 302 has a structure in which semiconductor modules 321 and cooling pipes 322 are alternately laminated. In the case shown in FIG. 12, two semiconductor modules 321 are arranged between cooling pipes 322 adjacent in the stacking direction.

  The semiconductor module 321 includes an IGBT element for supplying power and a flywheel diode element provided to smoothly rotate the motor between a pair of heat sinks, and is sealed with resin so that the pair of heat sinks are exposed. Stopped and integrally molded.

  The cooling pipe 322 is a flat pipe having a refrigerant flow path inside. In this refrigerant flow path, for example, natural refrigerants such as water and ammonia, water mixed with ethylene glycol antifreeze, fluorocarbon refrigerants such as fluorinate, Freon refrigerants such as HCFC123 and HFC134a, alcohols such as methanol and alcohol, etc. A cooling medium such as a system refrigerant or a ketone refrigerant such as acetone is circulated.

  The plurality of cooling pipes 322 are connected to each other via a connection pipe 323 extending along the stacking direction of the semiconductor stacking unit 302. A refrigerant introduction port 324 and a refrigerant discharge port 325 connected to a cooling pipe 322 disposed at the end of the connection pipe 323 are provided at the end of the connection pipe 323. The cooling pipe 322, the connecting pipe 323, the refrigerant inlet 324, and the refrigerant outlet 325 are realized using, for example, aluminum.

  The main surface 322 a of the cooling pipe 322 is in close contact with the heat sink of the semiconductor module 321 by the pressing force from the spring member 1. Thereby, heat exchange can be performed between the semiconductor module 321 and the cooling pipe 322.

  According to the second embodiment described above, by using the spring member 1, the semiconductor stacked unit 302 can be pressed in the stacking direction uniformly in a plane with a sufficient pressing force. Therefore, the cooling efficiency of the semiconductor stacked unit 302 by the cooling pipe 322 can be improved.

(Embodiment 3)
Next, a third embodiment of the present invention will be described. FIG. 13 is a schematic diagram showing a configuration of a main part of the electric double layer capacitor according to the third embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same component as the component mentioned above in FIG. In the third embodiment, an electric double layer capacitor that is a pressing unit will be described as an application example of the spring member 1. In addition, although the following example demonstrates as what was provided with the spring member 1 of the above-mentioned Embodiment 1, you may use the spring member concerning the modifications 1, 3, and 4 of Embodiment 1. FIG.

  The electric double layer capacitor 350 according to the third embodiment of the present invention includes a cell stack (first pressed body) 352 including a plurality of package cells 351, and a spring member 1 that presses the cell stack 352 from one side surface. A flat contact plate 354 interposed between the cell stack 352 and the spring member 1, and a housing (second pressed body to be accommodated) that houses the cell stack 352, the spring member 1 and the contact plate 354. 355. The electric double layer capacitor 350 has a connection terminal with an external circuit in addition to the illustration. The cell stack 352 is electrically connected to a connection terminal with an external circuit.

  The cell stack 352 is configured by stacking a plurality of package cells 351. Each package cell 351 has an innermost layer and an outermost layer made of an insulating film, and includes a positive electrode collector electrode and a negative electrode collector electrode. Inside each package cell 351, a laminated body in which a plurality of collector electrodes are overlapped via a separator is accommodated together with an electrolytic solution. The positive electrode terminal and the negative electrode terminal of each collector electrode are connected to the positive electrode collector electrode and the negative electrode collector electrode, respectively. The plurality of package cells 351 are connected in series by connecting the positive and negative electrode collectors of adjacent package cells 351 with connection terminals.

  According to the third embodiment described above, the energy density per unit volume is reduced by pressing the cell multilayer body 352 of the electric double layer capacitor 350 in the laminating direction by the spring member 1 to limit the expansion of the polarizable electrode. It becomes possible to improve.

  In the second and third embodiments described above, the load applied between the first pressed body and the second pressed body can be increased by using the plurality of spring members 1 stacked and stacked. it can.

  Further, in the above-described second embodiment, the power conversion device is taken as an example of a pressing unit that needs to be pressed by the spring member 1, and in the above-described third embodiment, the electric double layer capacitor needs to be pressed by the spring member 1. Although given as an example of the pressing unit, the pressing unit to which the spring member 1 according to the first embodiment is applied includes the spring member 1 disposed between the first pressed body and the second pressed body, Any one may be used as long as the first pressed body and the second pressed body are pressed by the spring member 1.

  As described above, the spring member and the pressing unit according to the present invention are suitable for applying a stable load to the pressed body.

1, 1a, 1b Spring member 10, 16 1st function part (function part)
11, 12, 17, 18 Second functional part 13, 14 Protruding part 13a First projecting part 13b Second projecting part 14a Third projecting part 14b Fourth projecting part 15,150 Support part 15a First support part 15b Second support Part 15c 3rd support part 15d 4th support part 101,161 1st flat plate part (flat plate part)
102, 102a, 102b, 162 First extension part 103, 103a, 103b, 163 Second extension part 111, 121, 171, 181 Second flat plate part 112, 122, 172, 182 Third extension part

Claims (5)

The base,
A flat plate portion, a first extending portion that rises with respect to the flat plate portion and extends in a first direction parallel to the main surface of the flat plate portion, and a portion different from the first extended portion of the flat plate portion A plurality of functional parts having a second extending part extending from the flat plate part in a direction opposite to the first direction from the second extending part;
A plurality of connecting portions for connecting the base portion and the flat plate portion respectively;
With
The plurality of functional units are arranged in a staggered manner,
The functional part is perpendicular to the main surface of the flat plate part and the extending direction of the first extending part from the flat plate part, and has a symmetrical shape with respect to a plane passing through the central part of the flat plate part,
The first and second extending portions have a tapered shape from the proximal end to the distal end connected to the flat plate portion,
The connecting portion is
Width at the connecting portion between said plate is rather smaller than the width of said plate,
From a part of the flat plate part, a first protruding part that protrudes in a second direction that is parallel to the main surface and substantially orthogonal to the first direction, and a part of the flat plate part from the first part. A spring member having at least one of second protrusions protruding in a direction opposite to the direction of 2 . A second flat plate portion, and a third extension that extends from the part of the second flat plate portion to the first flat plate portion or in a direction opposite to the first direction. A plurality of second functional units provided at both ends in the first direction,
A third projecting portion projecting from a part of the second flat plate portion toward the second direction;
A fourth projecting portion projecting from a part of the second flat plate portion in a direction opposite to the second direction;
Further comprising
The base portion, the spring member according to claim 1, characterized in that it supports a plurality of said third and fourth projecting portions. 3. The spring member according to claim 1, wherein the first and second extending portions have a substantially S shape in which a distal end side is curved in a manner opposite to a curved manner on a proximal end side. A first pressed body;
A second pressed body disposed opposite to the first pressed body;
Disposed between the second pressed body and the first pressed bodies, one of the claims 1-3 for applying pressure to the first pressed body and the second pressed body A spring member according to claim 1,
A pressing unit comprising: A plurality of the spring members;
The pressing unit according to claim 4 , wherein a plurality of the spring members are overlapped and disposed between the first pressed body and the second pressed body.

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