Pressure structure

The pressing structure, featuring high-conductivity and high elastic modulus members in zigzag curved shapes and four-tear knitting, addresses the challenge of simultaneously achieving stable load and conduction characteristics, ensuring effective conductivity and heat transfer.

JP2025066295APending Publication Date: 2025-04-23NHK SPRING CO LTD
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Patent Information

Application Number
JP2023175780
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-10-11
Publication Date
2025-04-23

AI Technical Summary

Technical Problem

Existing pressing structures struggle to stably exhibit both load characteristics and conduction characteristics, such as conductivity and heat transfer, when prioritizing load characteristics.

Method used

A pressing structure comprising first members made of high-conductivity materials, such as copper or aluminum, and second members made of high elastic modulus materials, such as carbon steel or stainless steel, are formed in zigzag curved shapes and knitted in four-tear patterns, with the first members positioned outside the second members to ensure contact with the pressed bodies.

Benefits of technology

This configuration allows for stable exhibition of both load characteristics and conduction characteristics, ensuring reliable conductivity and heat transfer while maintaining load-bearing capabilities.

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Abstract

To provide a pressure structure which can stably exert both a load characteristic and a transmission characteristic of a spring.SOLUTION: A pressure structure which is arranged between two pressed bodies and applies pressure to the pressured bodies comprises: a first member extending in a first direction, and also extending while repeating inverted curved forms which are inverted with respect to each other when viewed from a second direction orthogonal to the first direction; and a second member extending in the second direction, and also extending while repeating inverted curved forms when viewed from the first direction. The first member is formed of a material which is high in a transmission characteristic of energy which transmitted between the pressed body and itself as compared with the second material. The second member is formed of a material which is high in elasticity compared with the first member. Irregularity directions of the first and second members are aligned in a third direction orthogonal to the first and second directions. The first member is located outside the second member in the third direction.SELECTED DRAWING: Figure 1
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Description

[Technical field]

[0001] The present invention relates to a pressing structure. [Background technology]

[0002] There is known a pressing structure that is placed between a first pressed body and a second pressed body and pressurizes one or both of them (see, for example, Patent Document 1). The pressing structure described in Patent Document 1 is composed of a ribbed abutment plate and a leaf spring stacked together, and the leaf spring presses against one of the pressed bodies to apply a load. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-11936 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, a pressing structure may be used to pass electric current or transmit heat. In this case, if the load characteristics of the springs are given priority in the design, there are cases where characteristics other than the load characteristics (conductive characteristics), such as electrical conductivity and heat transfer, cannot be stably exhibited.

[0005] The present invention has been made in view of the above, and has an object to provide a pressing structure that can stably exhibit both the load characteristics and the conduction characteristics of a spring. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the pressing structure of the present invention is a pressing structure that is arranged between two pressed bodies and applies pressure to the pressed bodies, comprising: a first member extending in a first direction and extending in a curved shape that is repeatedly inverted relative to each other when viewed from a second direction perpendicular to the first direction; and a second member extending in the second direction and extending in a curved shape that is repeatedly inverted relative to each other when viewed from the first direction, wherein the first member is formed using a material having higher conductivity characteristics for energy conducted between the first member and the pressed body than the second member, and the second member is formed using a material having a higher elastic modulus than the first member, the concave and convex directions of the first and second members are aligned in a third direction perpendicular to the first and second directions, and in the third direction, the first member is positioned outboard of the second member.

[0007] In addition, the pressing structure according to the present invention is characterized in that, in the above invention, the plurality of first and second members are formed by four-loop knitting.

[0008] In addition, the pressing structure according to the present invention, in the above invention, further comprises a first support portion that supports one ends of the plurality of first members in the first direction.

[0009] In addition, the pressing structure according to the present invention, in the above invention, further comprises a second support portion that supports one ends of the plurality of second members in the second direction.

[0010] In addition, the pressing structure according to the present invention, in the above invention, is characterized in that it further comprises a third support portion that supports the other ends of the plurality of second members in the second direction.

[0011] In addition, the pressing structure of the present invention, in the above invention, is characterized in that it further includes a second support portion supporting one end in the second direction of some of the second members among the plurality of second members, and a third support portion supporting the other end in the second direction of some of the second members among the plurality of second members other than the second members supported by the second support portion.

[0012] In addition, the pressing structure of the present invention is characterized in that, in the above invention, the first member is formed by curving a flat member, and the multiple second members are stacked on the first member with their extension directions aligned with each other. Effect of the Invention

[0013] According to the present invention, it is possible to stably exhibit both the load characteristics of the spring and the conduction characteristics such as electrical conductivity and thermal conductivity. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a plan view showing the configuration of a pressing structure according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view taken along line AA shown in FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along line BB shown in FIG. [Figure 4] FIG. 4 is a plan view showing a configuration of a pressing structure according to the first modification of the embodiment of the present invention. [Diagram 5] FIG. 5 is a plan view showing a configuration of a pressing structure according to the second modification of the embodiment of the present invention. [Figure 6] FIG. 6 is a plan view showing a configuration of a pressing structure according to the third modification of the embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view showing a configuration of a pressing structure according to the fourth modification of the embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] In the following description, a pressing structure will be described as a form for carrying out the present invention (hereinafter, referred to as an "embodiment"). The present invention is not limited to this embodiment. Furthermore, in the drawings, the same parts are given the same reference numerals. Furthermore, it should be noted that the drawings are schematic, and the relationship between the thickness and width of each member, the ratio of each member, etc., differ from reality. Furthermore, the drawings include parts with different dimensions and ratios.

[0016] (Embodiment) FIG. 1 is a plan view showing the configuration of a pressing structure according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. FIG. 3 is a cross-sectional view taken along line BB in FIG. 1. The pressing structure 1 according to the embodiment of the present invention is provided between a first pressed body and a second pressed body by elastic force, and applies pressure to both pressed bodies. For example, in the example shown in FIG. 1, the two pressed bodies are arranged so as to sandwich the pressing structure 1 in a direction perpendicular to the paper surface. In addition, in FIG. 1, one direction parallel to the paper surface (here, the left-right direction) is the X direction (first direction), a direction perpendicular to the X direction and parallel to the paper surface (here, the up-down direction) is the Y direction (second direction), and a direction perpendicular to the X direction and the Y direction (direction perpendicular to the paper surface) is the Z direction (third direction).

[0017] The pressing structure 1 includes a plurality of first members 11 and a plurality of second members 12.

[0018] The first member 11 is formed by bending a wire rod having a circular cross section, and extends in the X direction. At this time, the first member 11 is displaced in a zigzag manner in the Z direction, and extends in a repeating manner of curves that are inverted from each other when viewed from the Y direction (see FIG. 2). The first member 11 is formed using a material that has high conductivity, heat transfer, and other characteristics other than load characteristics, and that is, high conductivity characteristics of energy transferred between the first member 11 and the pressed body. The first member 11 is formed using, for example, copper or aluminum depending on the required characteristics such as conductivity and heat transfer. An example in which the first member 11 is formed using a material having high conductivity will be described below.

[0019] The second member 12 is formed by bending a wire rod having a circular cross section, and extends in the Y direction. At this time, the second member 12 is displaced in a zigzag manner in the Z direction, and extends in a manner in which the curved shapes are inverted from each other when viewed from the X direction (see FIG. 3). The second member 12 is formed of a material with good load characteristics, such as carbon steel or stainless steel with a high elastic modulus. The second member 12 is formed of a material with a higher Young's modulus than the first member 11, for example. Note that the Poisson's ratio may be used as the elastic modulus.

[0020] The multiple first members 11 and the multiple second members 12 are, for example, woven in a four-way manner with the directions of the members aligned. In this case, in the pressing structure 1, the first members 11 are positioned outside the second members 12. That is, in the pressing structure 1, the first members 11 are positioned outside the second members 12 in the Z direction. Note that, as long as the first member 11 comes into contact with the object to be pressed and the load characteristics can be ensured, the pressing structure 1 is not limited to a four-loop braid.

[0021] When two pressed bodies are placed in the pressing structure 1, the first member 11 and the second member 12 deform and apply a load to each pressed body. In the pressing structure 1, the spring characteristics can be adjusted by adjusting the curved shape. At this time, in the pressing structure 1, only the first member 11 comes into contact with the pressed body. Therefore, the pressed body and the conductive first member 11 come into contact with each other, and electrical conduction between them is ensured.

[0022] In the above-described embodiment, the first member 11 made of a material with high conductive properties (electrical conductivity in this case) and the second member 12 made of a material with high load characteristics are curved in a zigzag shape and woven together in a manner in which the first member 11 comes into contact with the pressed body to form the pressing structure 1. According to this embodiment, the load characteristics of the spring can be stably exhibited due to the characteristics of the second member 12, and the conductive characteristics can be stably exhibited due to the contact of the first member 11 with the pressed body.

[0023] (Variation 1) Next, a first modified example of the present embodiment will be described with reference to Fig. 4. Fig. 4 is a plan view showing the configuration of a pressing structure according to the first modified example of the present embodiment. In this first modified example, a support part that supports each member is provided in addition to the configuration of the pressing structure 1 according to the embodiment. Hereinafter, the same components as those in the embodiment are given the same reference numerals, and the description thereof will be omitted.

[0024] The pressing structure 1A of this modified example 1 comprises a plurality of first members 11, a plurality of second members 12, a first support portion 13 supporting one ends of the plurality of first members 11, a second support portion 14 supporting one ends of the plurality of second members 12, and a third support portion 15 supporting the other ends of the plurality of second members 12.

[0025] The first support portion 13 extends in the Y direction and supports one end of each of the first members 11 in the X direction. The second support portion 14 extends in the X direction and supports one end of each of the second members 12 in the Y direction. The third support portion 15 extends in the X direction and supports the other end of each second member 12 in the Y direction.

[0026] The pressing structure 1A is obtained, for example, by bending the first member 11 and the second member 12 supported by the support part into a zigzag shape, and then inserting the first member 11 into the second member 12, thereby obtaining a structure in which the first member 11 and the second member 12 are woven in a four-way pattern. At this time, in the pressing structure 1A, the first member 11 is located outside the second member 12.

[0027] In the pressing structure 1A, similarly to the pressing structure 1, when two pressed bodies are disposed, the first member 11 and the second member 12 deform and apply a load to each of the pressed bodies. At this time, in the pressing structure 1A, only the first member 11 comes into contact with the pressed bodies. Therefore, the pressed body and the conductive first member 11 come into contact with each other, and electrical conduction between them is ensured.

[0028] In the above-mentioned modified example 1, similarly to the embodiment, a first member 11 made of a material with high conductive properties (conductivity in this case) and a second member 12 made of a material with high load characteristics are curved in a zigzag shape and woven together in a manner in which the first member 11 comes into contact with a body to be pressed, to form a pressing structure 1A. According to this modified example 1, the load characteristics of a spring can be stably exhibited due to the characteristics of the second member 12, and the conductive characteristics can be stably exhibited due to the contact of the first member 11 with the body to be pressed.

[0029] Furthermore, according to this modified example 1, the first member 11 is supported by the first support portion 13, and the second member 12 is supported by the second support portion 14 and the third support portion 15, so that the structure of the pressing structure 1A is stabilized without the first member 11 or the second member 12 coming off the pressing structure 1A.

[0030] (Variation 2) Next, a second modification of the present embodiment will be described with reference to Fig. 5. Fig. 5 is a plan view showing the configuration of a pressing structure according to the second modification of the present embodiment. In this second modification, in contrast to the configuration of the pressing structure 1 according to the embodiment, each second member 12 is supported by a second support portion 16 or a third support portion 17. Hereinafter, the same components as those in the embodiment are given the same reference numerals, and description thereof will be omitted.

[0031] The pressing structure 1B of this modified example 2 comprises a plurality of first members 11, a plurality of second members 12, a second support portion 16 that supports an end portion of a portion of the plurality of second members 12 (referred to as second member 12A) among the plurality of second members 12, and a third support portion 17 that supports an end portion of a portion of the plurality of second members 12 (referred to as second member 12B) other than the second member 12 supported by the second support portion 16.

[0032] The second support portion 16 extends in the X direction, and supports one end of the second member 12A in the Y direction. The third support portion 17 extends in the X direction, and supports the other end of the second member 12B in the Y direction. In addition, in the present modified example 2, an example in which the second members 12A and 12B are arranged alternately will be described, but the supporting manner by the supporting portion is not limited to this.

[0033] The pressing structure 1B is obtained, for example, by bending the first member 11 and the second member 12 supported by the support portion into a zigzag shape, adjusting the positional relationship between the second member 12A and the second member 12B, and overlapping the second member 12 on the curved portion of each first member 11. At this time, in the pressing structure 1B, the first members 11 are arranged with the same curved state in the X direction, and the second member 12 passes through the valley of the curve of the first member 11. In the pressing structure 1B, the first member 11 is located outside the second member 12.

[0034] In the pressing structure 1B, similarly to the pressing structure 1, when two pressed bodies are disposed, the first member 11 and the second member 12 deform and apply a load to each pressed body. At this time, in the pressing structure 1B, only the first member 11 comes into contact with the pressed body. Therefore, the pressed body and the conductive first member 11 come into contact with each other, and electrical conduction between them is ensured.

[0035] In the above-mentioned modified example 2, similarly to the embodiment, a first member 11 made of a material with high conductive properties (conductivity in this case) and a second member 12 made of a material with high load characteristics are curved in a zigzag shape and woven together in a manner in which the first member 11 comes into contact with the pressed body to form a pressing structure 1B. According to this modified example 2, the load characteristics of the spring can be stably exhibited due to the characteristics of the second member 12, and the conductive characteristics can be stably exhibited due to the contact of the first member 11 with the pressed body.

[0036] Furthermore, according to the present modified example 2, the second member 12 is disposed so as to overlap and pass through the valley portion of the first member 11, so that the structure can be produced more easily than a structure formed by four-eye knitting.

[0037] (Variation 3) Next, a third modification of the present embodiment will be described with reference to Fig. 6. Fig. 6 is a plan view showing the configuration of a pressing structure according to the third modification of the present embodiment. In the third modification, the pressing structure 1B according to the second modification has a flat plate-like shape, unlike the configuration of the first members 11. Hereinafter, the same components as those in the embodiment are given the same reference numerals, and the description thereof will be omitted.

[0038] The pressing structure 1C of this modified example 3 comprises a plurality of first members 11A, a plurality of second members 12, a second support portion 16 that supports an end portion of a portion of the plurality of second members 12 (referred to as second member 12A) among the plurality of second members 12, and a third support portion 17 that supports an end portion of a portion of the plurality of second members 12 (referred to as second member 12B) other than the second member 12 supported by the second support portion 16.

[0039] The first member 11A is formed by bending a flat plate-like member and extends in the X direction. At this time, the first member 11A is displaced in a zigzag manner in the Z direction and forms a repeated S-shape when viewed from the Y direction. The first member 11A is formed using a material that has high conductivity of energy conducted between the first member 11A and the pressed body.

[0040] The pressing structure 1C is obtained, for example, by bending the first member 11A and the second member 12 supported by the support portion into a zigzag shape, and then inserting the second member 12 into the curved portion of the first member 11A. At this time, in the pressing structure 1C, the second member 12 passes through each valley of the curve of the first member 11A. In the pressing structure 1C, the first member 11A is located outside the second member 12.

[0041] In the pressing structure 1C, similarly to the pressing structure 1, when two pressed bodies are arranged, the first member 11A and the second member 12 are deformed and apply a load to each pressed body. At this time, in the pressing structure 1C, only the first member 11A comes into contact with the pressed body. Therefore, the pressed body and the conductive first member 11A come into contact with each other, and electrical conduction between them is ensured.

[0042] In the above-mentioned modified example 3, similarly to the embodiment, a first member 11A made of a material with high conductive properties (conductivity in this case) and a second member 12 made of a material with high load characteristics are curved in a zigzag shape, and a pressing structure 1C is formed by weaving the first member 11 in a manner that makes contact with a pressed body. According to this modified example 3, the load characteristics of the spring can be stably exhibited by the characteristics of the second member 12, and the conductive characteristics can be stably exhibited by the contact of the first member 11A with the pressed body.

[0043] Furthermore, according to the present modified example 3, the second member 12 is disposed so as to pass through each of the valleys of the first member 11A, and therefore, compared to a structure formed by four-eye knitting, the structure can be produced more easily.

[0044] In addition, in the present modifications 1 to 3, the material forming the support part may be the same as the material of the member to be supported, or may be a different material. For example, the first support part 13 may be made of the same material as the first member 11 and may be formed integrally with it, or may be formed separately. When the first member 11 and the first support part 13 are separate bodies, the materials forming the respective parts may be the same or different materials.

[0045] (Variation 4) Next, a fourth modified example of the present embodiment will be described with reference to Fig. 7. Fig. 7 is a cross-sectional view showing the configuration of a pressing structure according to the fourth modified example of the present embodiment. Fig. 7 corresponds to the AA cross section shown in Fig. 1, for example. In the fourth modified example, the cross-sectional shapes of the wires of the first member 11 and the second member 12 are different from those of the pressing structure 1 according to the embodiment. Hereinafter, the same components as those in the embodiment are given the same reference numerals, and the description thereof will be omitted.

[0046] The pressing structure according to the fourth modification includes a plurality of first members 11B and a plurality of second members 12C.

[0047] The first member 11B is made by bending a wire rod having a rectangular cross section, and extends in the X direction. At this time, the first member 11B is displaced in a zigzag manner in the Z direction, and forms a repeated S-shape when viewed from the Y direction. The first member 11B is made of a material that has high conductivity of energy conducted between the first member 11B and the pressed body.

[0048] The second member 12C is formed by bending a wire rod having a rectangular cross section, and extends in the Y direction. At this time, the second member 12 is displaced in a zigzag manner in the Z direction, and has a shape that repeats mutually inverted curved patterns when viewed from the X direction. The second member 12 is formed using a material with good load characteristics.

[0049] The first members 11B and the second members 12C are, for example, woven in a four-way manner with the directions of the members aligned in the same direction. In this case, in the pressing structure, the first members 11B are positioned outside the second members 12C.

[0050] In the pressing structure according to the fourth modification, when two pressed bodies are disposed, the first member 11B and the second member 12C are deformed and apply a load to each pressed body. In the pressing structure, the spring characteristics can be adjusted by adjusting the curved shape. At this time, in the pressing structure, only the first member 11B comes into contact with the pressed body. Therefore, the pressed body and the conductive first member 11B come into contact with each other, and electrical conduction between them is ensured.

[0051] In the above-mentioned modification 4, as in the embodiment, a pressing structure is formed by bending a first member 11B made of a material with high conductive properties (conductivity in this case) and a second member 12C made of a material with high load characteristics in a zigzag shape and weaving the first member 11B in a manner that the first member 11B contacts the pressed body. According to this modification 4, the spring load characteristics can be stably exhibited by the characteristics of the second member 12C, and the first member 11B can be stably exhibited by contacting the pressed body.

[0052] In the fourth modification, the thickness of the first member 11B may be made thinner than that of the second member 12C, so long as characteristics other than the load characteristics are ensured.

[0053] In this way, the present invention can include various embodiments not described here, and various design changes can be made without departing from the technical idea specified by the claims. For example, the first member and the second member may have different cross-sectional shapes, for example, a pressing structure may be formed using a wire material having a circular cross section and a plate material having a rectangular cross section.

[0054] In addition, in the pressing structure, before the first member and the second member are combined, the first member does not necessarily have to have a shape as shown in Figure 2, etc., but may have, for example, a flat plate shape (a linear band shape) and have a shape as shown in Figure 2 when assembled to the second member.

[0055] As described above, the pressing structure according to the present invention is suitable for stably exhibiting both the load characteristics of a spring and the conductive characteristics such as electrical conductivity and thermal conductivity. [Explanation of symbols]

[0056] 1, 1A~1C Pressing structure 11, 11A, 11B First member 12, 12A to 12C Second member 13 First support part 14, 16 Second support part 15, 17 Third support part

Claims

1. A pressing structure that is disposed between two pressed bodies and applies pressure to the pressed bodies, A first member extends in a first direction and extends in a manner in which the curved shapes are inverted from each other when viewed from a second direction perpendicular to the first direction; A second member extending in the second direction and repeating curved patterns that are inverted from each other when viewed from the first direction; Equipped with the first member is formed using a material having a higher conductivity characteristic of energy transmitted between the first member and the pressed body than the second member; The second member is formed using a material having a higher elastic modulus than the first member, The concave and convex directions of the first and second members are aligned in a third direction perpendicular to the first and second directions, and the first member is positioned outward from the second member in the third direction. A pressing structure characterized by:

2. The first and second members are braided in a four-way pattern.

2. The pressing structure according to claim 1 .

3. a first support portion that supports one end of each of the first members in the first direction; The pressing structure according to claim 1 , further comprising:

4. a second support portion that supports one end of each of the second members in the second direction; The pressing structure according to claim 1 or 3, further comprising:

5. a third support portion that supports the other ends of the second members in the second direction; The pressing structure according to claim 4, further comprising:

6. A second support portion that supports one end in the second direction of some of the second members among the plurality of second members; a third support portion that supports the other end in the second direction of the second member other than the second member supported by the second support portion among the plurality of second members; The pressing structure according to claim 1 , further comprising:

7. The first member is formed by bending a flat plate-like member, The second members are stacked on the first member with their extension directions aligned with each other.

7. The pressing structure according to claim 6.

Citation Information

Patent Citations

  • Power converter

    JP2014011936A