Relay structure
The relay structure addresses heat dissipation challenges by using high thermal conductivity rod-shaped heat transfer bodies to efficiently transfer heat from contact points to conductors, enhancing heat dissipation and operational reliability without increasing size.
Patent Information
- Application Number
- JP2021004088
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-01-14
- Publication Date
- 2025-01-20
- Estimated Expiration
- 2041-01-14
AI Technical Summary
Conventional relays face challenges in efficiently dissipating heat due to high thermal resistance from the heat source inside the relay to the conductor, necessitating larger relay sizes and reduced current flow rates.
The relay structure incorporates a first and second conductor, an outer shell, and a cylindrical tube with rod-shaped heat transfer bodies having higher thermal conductivity than the fasteners, reducing thermal resistance by facilitating direct heat transfer from the fixed and movable contact points to the conductors.
This configuration enhances heat dissipation characteristics, allowing efficient heat transfer to the conductors, thereby improving operational reliability and preventing the need for larger relay sizes.
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Abstract
Description
[Technical field]
[0001] The present invention relates to a relay structure for use in various electrical devices. [Background technology]
[0002] A conventional relay device will be described below. Conventionally, in order to dissipate heat generated at the internal contacts of a relay to the outside of the relay, measures have been taken such as increasing the cross-sectional area of the conductor for current flow connected to the relay or connecting a heat sink or heat transfer insulator to the conductor for current flow.
[0003] As prior art document information related to the invention of this application, for example, Patent Document 1 is known. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] JP 2014-79093 A Summary of the Invention [Problem to be solved by the invention]
[0005] However, in conventional relays, the thermal resistance between the heat source inside the relay and the conductor connected to the relay is large, and the heat generated inside the relay is difficult to transfer to the heat sink outside the relay. As a result, in order to improve the heat dissipation characteristics of the relay, there is a problem that it is necessary to reduce the thermal resistance between the heat source inside the relay and the conductor connected to the relay by increasing the size of the relay, or to suppress the current value that can be passed.
[0006] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to improve the heat dissipation characteristics of a relay structure. [Means for solving the problem]
[0007] In order to achieve this object, the present invention provides a heat exchanger comprising a first conductor, a second conductor, an outer shell portion, a cylindrical first fixed contact portion and a cylindrical second fixed contact portion provided on the outer shell portion and partially exposed from the outer shell portion, a movable contact portion contained within the outer shell portion and provided so as to be in contact or not in contact with the first fixed contact portion and the second fixed contact portion, a first fastener for fastening the first fixed contact portion and the first conductor, and a second fastener for fastening the second fixed contact portion and the second conductor, wherein the first fastener and the second fastener are composed of a rod-shaped metal having a thread groove on its outer periphery and a canopy portion for pressing the first conductor and the second conductor, and a through hole is provided in the axial direction of the rod-shaped metal that passes through the rod-shaped metal and the canopy portion, and a rod-shaped heat transfer body having a higher thermal conductivity than the first fastener and the second fastener is disposed in the through hole. An insulating heat transfer body is further disposed on the opposite side of the canopy portion from the first conductor and the second conductor, and an end of the rod-shaped heat transfer body is in contact with the insulating heat transfer body. The feature of this invention is that Effect of the Invention
[0008] According to the present invention, The thermal resistance from the first fixed contact portion, the second fixed contact portion, or the movable contact portion, which are heat generating portions, to the first conductor and the second conductor is reduced by the rod-shaped heat transfer body with high thermal conductivity. As a result, heat generated in the first fixed contact portion, the second fixed contact portion, or the movable contact portion is easily transferred to the first conductor and the second conductor, making it possible to improve the heat dissipation characteristics of the relay structure. [Brief description of the drawings]
[0009] [Figure 1] FIG. 1 is a first cross-sectional view showing a configuration of a relay structure according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a second cross-sectional view showing the configuration of the relay structure according to the embodiment of the present invention; [Diagram 3] FIG. 3 is a third cross-sectional view showing the configuration of a relay structure according to an embodiment of the present invention. [Figure 4] FIG. 4 is a cross-sectional view showing the configuration of the relay structure according to the embodiment of the present invention. [Diagram 5] FIG. 5 is a cross-sectional view showing the configuration of a relay structure according to an embodiment of the present invention. [Figure 6] FIG. 6 is a cross-sectional view showing the configuration of the relay structure according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0011] (Embodiment) 1 is a first cross-sectional view showing the configuration of a relay structure 1 according to an embodiment of the present invention. The relay structure 1 includes a first conductor 2, a second conductor 3, an outer shell 4, a first fixed contact portion 5, a second fixed contact portion 6, a movable contact portion 7, a first fastener 8, a second fastener 9, and rod-shaped heat transfer bodies 13A and 13B.
[0012] The first fixed contact portion 5 and the second fixed contact portion 6 are cylindrical and provided on the outer shell portion 4. A part of the first fixed contact portion 5 and a part of the second fixed contact portion 6 are exposed from the outer shell portion 4. The movable contact portion 7 is provided within the outer shell portion 4. The movable contact portion 7 is provided so as to be in contact with or out of contact with the second fixed contact portion 6 and the first fixed contact portion 5.
[0013] The first fastener 8 fastens the first fixed contact portion 5 and the first conductor 2. The second fastener 9 fastens the second fixed contact portion 6 and the second conductor 3. In detail, the first fastener 8 is composed of a rod-shaped metal 10A and a canopy portion 11A. The second fastener 9 is composed of a rod-shaped metal 10B and a canopy portion 11B. The rod-shaped metals 10A and 10B have thread grooves on their outer peripheries. The canopy portion 11A presses the first conductor 2, and the canopy portion 11B presses the second conductor 3.
[0014] The rod-shaped metal 10A and the canopy portion 11A are provided with a through hole 12A penetrating the rod-shaped metal 10A and the canopy portion 11A in the axial direction of the rod-shaped metal 10A. Similarly, the rod-shaped metal 10B and the canopy portion 11B are provided with a through hole 12B penetrating the rod-shaped metal 10B and the canopy portion 11B in the axial direction of the rod-shaped metal 10B. Furthermore, the through hole 12A is provided with a rod-shaped heat transfer material 13A having a higher thermal conductivity than the first fastener 8. Similarly, the through hole 12B is provided with a rod-shaped heat transfer material 13B having a higher thermal conductivity than the second fastener 9.
[0015] With the above configuration, the thermal resistance from the first fixed contact portion 5, the second fixed contact portion 6, or the movable contact portion 7, which are heat generating portions, to the first conductor 2 and the second conductor 3 is reduced by the rod-shaped heat transfer material with high thermal conductivity. As a result, heat generated in the first fixed contact portion 5, the second fixed contact portion 6, or the movable contact portion 7 is easily transferred to the first conductor 2 and the second conductor 3, making it possible to improve the heat dissipation characteristics of the relay structure 1.
[0016] The following describes in detail the relay structure 1. As described above, the relay structure 1 includes a first conductor 2, a second conductor 3, an outer shell 4, a first fixed contact portion 5, a second fixed contact portion 6, a movable contact portion 7, a first fastener 8, a second fastener 9, and rod-shaped heat transfer bodies 13A and 13B.
[0017] The first fixed contact portion 5 and the second fixed contact portion 6 have a tubular shape and are provided on the outer shell portion 4. In detail, the first fixed contact portion 5 and the second fixed contact portion 6 are tubular or cylindrical with a bottom, and openings 5A, 6A of the cylindrical with a bottom are exposed from the outer shell portion 4. The movable contact portion 7 is provided so as to be in contact with or not in contact with the bottom 5B of the first fixed contact portion 5 and the bottom 6B of the second fixed contact portion 6.
[0018] The first fastener 8 fastens the first conductor 2 by sandwiching the first conductor 2 between the canopy portion 11A of the first fastener 8 and the opening 5A of the first fixed contact portion 5. The second fastener 9 fastens the second conductor 3 by sandwiching the second conductor 3 between the canopy portion 11B of the second fastener 9 and the opening 6A of the second fixed contact portion 6. The first fastener 8 is composed of a rod-shaped metal 10A provided on the outer periphery as a male screw and the canopy portion 11A. The second fastener 9 is composed of a rod-shaped metal 10B provided on the outer periphery as a male screw and the canopy portion 11B. A female screw is provided on the inner periphery of the opening 6A of the second fixed contact portion 6. A female screw is provided on the inner periphery of the opening 5A of the first fixed contact portion 5. A female screw is provided on the inner periphery of the opening 6A of the second fixed contact portion 6.
[0019] The rod-shaped metal 10A and the canopy portion 11A are provided with a through-hole 12A penetrating the rod-shaped metal 10A and the canopy portion 11A in the axial direction of an axis extending in the vertical direction of the rod-shaped metal 10A in the figure. Similarly, the rod-shaped metal 10B and the canopy portion 11B are provided with a through-hole 12B penetrating the rod-shaped metal 10B and the canopy portion 11B in the axial direction of an axis extending in the vertical direction of the rod-shaped metal 10B in the figure.
[0020] Furthermore, in the through hole 12A, a rod-shaped heat transfer body 13A having a higher thermal conductivity than the first fastener 8 is provided in a state of being in close contact with the inner circumference of the through hole 12A. Similarly, in the through hole 12B, a rod-shaped heat transfer body 13B having a higher thermal conductivity than the second fastener 9 is provided in a state of being in close contact with the inner circumference of the through hole 12B. Here, the rod-shaped heat transfer body 13A has a higher thermal conductivity than the first fastener 8, and the thermal conductivity per unit volume of the rod-shaped heat transfer body 13A is higher than the thermal conductivity per unit volume of the first fastener 8. Similarly, the rod-shaped heat transfer body 13B has a higher thermal conductivity than the second fastener 9, and the thermal conductivity per unit volume of the rod-shaped heat transfer body 13B is higher than the thermal conductivity per unit volume of the second fastener 9. Also, the electrical conductivity of the rod-shaped heat transfer body 13A is higher than the electrical conductivity of the first fastener 8. Similarly, the conductivity of the rod-shaped heat transfer body 13B is higher than the conductivity of the second fastener 9.
[0021] The outer shell 4 is provided with a drive unit 14 in addition to the first fixed contact unit 5, the second fixed contact unit 6, and the movable contact unit 7 described above. The drive unit 14 moves the movable contact unit 7 to switch the first fixed contact unit 5, the second fixed contact unit 6, and the movable contact unit 7 to a connected state or a disconnected state. The drive unit 14 has an iron core (not shown), a winding unit (not shown), a drive shaft (not shown), and a drive spring (not shown), but the mechanical structure of the drive unit 14 will not be described in detail here. The drive unit 14 may be completely contained within the outer shell 4, or a part of the drive unit 14 may be exposed from the outer shell 4. Alternatively, the entire drive unit 14 may be provided outside the outer shell 4. At least the terminal 15 described later is provided in a state exposed from the outer shell 4.
[0022] The drive unit 14 operates by receiving power supply from a drive circuit (not shown) provided outside the relay structure 1 through the terminal 15. For example, it is preferable that the drive circuit (not shown) applies a predetermined voltage to the terminal 15, thereby changing the position of the movable contact unit 7, and the first fixed contact unit 5 and the second fixed contact unit 6 switch from a disconnected state to a contacted state with the movable contact unit 7. Alternatively, it is preferable that the drive circuit (not shown) applies a predetermined voltage to the terminal 15, thereby changing the position of the movable contact unit 7, and the first fixed contact unit 5 and the second fixed contact unit 6 switch from a connected state to a disconnected state with the movable contact unit 7.
[0023] The outer shell 4 has the movable contact portion 7 disposed in a sealed space within the outer shell 4, and a gas such as hydrogen is sealed in the sealed space within the outer shell 4 to suppress arc discharge that may occur between the first fixed contact portion 5 and the second fixed contact portion 6 and the movable contact portion 7. The openings 5A, 6A of the first fixed contact portion 5 and the second fixed contact portion 6 are exposed from the outer shell 4, but the bottoms 5B, 6B of the first fixed contact portion 5 and the second fixed contact portion 6 are located in the sealed space within the outer shell 4 in an atmosphere of hydrogen or the like. The outer shell 4 is desirably made of a material with excellent insulating properties and heat resistance, such as resin or ceramic.
[0024] Here, when a large current flows through the first conductor 2 and the second conductor 3 while the first fixed contact portion 5 and the second fixed contact portion 6 are in contact with the movable contact portion 7, heat is generated due to the contact resistance that exists at the contact portion between the first fixed contact portion 5 and the second fixed contact portion 6 and the movable contact portion 7. Since the outer shell portion 4 is made of a material with excellent insulating and heat resistance such as resin or ceramic, the heat is concentrated in the first fixed contact portion 5 and the second fixed contact portion 6 rather than in the outer shell portion 4. Here, the flow of heat is transmitted from the bottoms 5B and 6B of the first fixed contact portion 5 and the second fixed contact portion 6 to the openings 5A and 6A, and from the openings 5A and 6A to the first fastener 8 and the second fastener 9 to the first conductor 2 and the second conductor 3. Here, through holes 12A and 12B formed in first fastener 8 and second fastener 9 are provided with rod-shaped heat transfer bodies 13A and 13B having high thermal conductivity.
[0025] As described above, the rod-shaped heat transfer bodies 13A and 13B have a higher thermal conductivity than the rod-shaped metal bodies 10A and 10B. Therefore, in order to improve the thermal conductivity of the first fastener 8 and the second fastener 9 including the rod-shaped heat transfer bodies 13A and 13B, it is preferable that the volume of the through holes 12A and 12B in the rod-shaped metal bodies 10A and 10B is larger than the volume of the rod-shaped metal bodies 10A and 10B that are substantially cylindrical. In other words, it is preferable that the rod-shaped metal bodies 10A and 10B that are substantially cylindrical are formed in a cylindrical shape with a thin wall thickness at a level that allows the fixing strength to the first fixed contact portion 5 and the second fixed contact portion 6 to be maintained. This improves heat transfer from the rod-shaped heat transfer bodies 13A, 13B to the first conductor 2 and the second conductor 3 via the rod-shaped metals 10A, 10B, or improves heat transfer from the rod-shaped heat transfer bodies 13A, 13B to the first conductor 2 and the second conductor 3 via the canopy portions 11A, 11B.
[0026] This increases the thermal conductivity of the first fastener 8 and the second fastener 9 including the rod-shaped heat transfer bodies 13A and 13B. As a result, the thermal resistance from the first fixed contact portion 5 and the second fixed contact portion 6, or the movable contact portion 7, which are heat generating portions, to the first conductor 2 and the second conductor 3 is reduced by the rod-shaped heat transfer bodies 13A and 13B, which have high thermal conductivity. Heat generated at the bottoms 5B and 6B of the first fixed contact portion 5 and the second fixed contact portion 6 is easily transferred to the first conductor 2 and the second conductor 3, making it possible to improve the heat dissipation characteristics of the relay structure 1.
[0027] This makes it possible to prevent adverse effects of heat on the drive unit 14 and the drive circuit (not shown), thereby improving the operational reliability of the relay structure 1. In addition, it becomes possible to prevent the relay structure 1 from becoming large.
[0028] Here, as shown in the second cross-sectional view of the relay structure 1 in the embodiment of the present invention in Fig. 2, it is preferable to use a heat pipe for the rod-shaped heat transfer bodies 13A and 13B. In other words, the rod-shaped heat transfer bodies 13A and 13B have sealed areas 16A and 16B. It is preferable that a fluid is sealed in the sealed areas 16A and 16B. For the rod-shaped heat transfer bodies 13A and 13B, a heat pipe having a higher thermal conductivity than a simple metal heat transfer body made of, for example, copper or a copper alloy is used.
[0029] As a result, rod-shaped heat transfer bodies 13A and 13B have high thermal conductivity, and the thermal conductivity of first fastener 8 and second fastener 9 including rod-shaped heat transfer bodies 13A and 13B is improved. As a result, the thermal resistance from first fixed contact portion 5 and second fixed contact portion 6, or movable contact portion 7, which are heat generating portions, to first conductor 2 and second conductor 3 is reduced by rod-shaped heat transfer bodies 13A and 13B, which have high thermal conductivity. Heat generated at bottoms 5B and 6B of first fixed contact portion 5 and second fixed contact portion 6 is easily transferred to first conductor 2 and second conductor 3, and the heat dissipation characteristics of relay structure 1 can be improved.
[0030] As described above, the first fixed contact portion 5 and the second fixed contact portion 6 are tubular and provided on the outer shell portion 4. In detail, the first fixed contact portion 5 and the second fixed contact portion 6 are tubular or cylindrical with a bottom, and the openings 5A, 6A of the cylindrical with a bottom are exposed from the outer shell portion 4. The movable contact portion 7 is provided opposite the bottom 5B of the first fixed contact portion 5 and the bottom 6B of the second fixed contact portion 6, and is provided so as to be in contact with or out of contact with the bottom 5B of the first fixed contact portion 5 and the bottom 6B of the second fixed contact portion 6.
[0031] Here, as shown in the third cross-sectional view of the configuration of the relay structure 1 in the embodiment of the present invention in Fig. 3, the heat transfer end portions 17A, 17B, which are one end of the rod-shaped heat transfer bodies 13A, 13B, may be in contact with the bottom portions 5B, 6B. When a large current flows through the first conductor 2, the second conductor 3 while the first fixed contact portion 5 and the second fixed contact portion 6 are in contact with the movable contact portion 7, heat is generated due to the contact resistance present at the contact portion between the first fixed contact portion 5 and the second fixed contact portion 6 and the movable contact portion 7. Since the heat transfer end portions 17A, 17B are in contact with the bottom portions 5B, 6B, heat is transferred efficiently from the bottom portions 5B, 6B, which are essentially heat generating portions, to the rod-shaped heat transfer bodies 13A, 13B.
[0032] As a result, the thermal resistance from the first fixed contact portion 5, the second fixed contact portion 6, or the movable contact portion 7, which are heat generating portions, to the first conductor 2 and the second conductor 3 is reduced by rod-shaped heat transfer bodies 13A and 13B, which have high thermal conductivity. Heat generated at bottoms 5B and 6B of first fixed contact portion 5 and second fixed contact portion 6 is easily transferred to the first conductor 2 and the second conductor 3, making it possible to improve the heat dissipation characteristics of the relay structure 1.
[0033] Here, as shown in the fourth cross-sectional view of the configuration of the relay structure 1 in the embodiment of the present invention in FIG. 4, the insulating heat transfer bodies 18A and 18B are disposed on the upper surfaces of the canopy portion 11A of the first fastener 8 and the canopy portion 11B of the second fastener 9 in the drawing. In other words, the insulating heat transfer bodies 18A and 18B are disposed on the opposite side of the canopy portions 11A and 11B from the first conductor 2 and the second conductor 3. In other words, the insulating heat transfer bodies 18A and 18B are disposed in close contact with the first conductor 2 and the second conductor 3 on the opposite side from the side where the outer shell portion 4 of the first conductor 2 and the second conductor 3 is disposed. Here, the heat transfer body ends 19A and 19B, which are the other ends of the rod-shaped heat transfer bodies 13A and 13B, are in contact with the insulating heat transfer bodies 18A and 18B.
[0034] This increases the thermal conductivity of the first fastener 8 and the second fastener 9 including the rod-shaped heat transfer body 13A and the rod-shaped heat transfer body 13B, and further improves the efficiency of heat transfer from the rod-shaped heat transfer body 13A and the rod-shaped heat transfer body 13B to the insulating heat transfer body 18A and the rod-shaped heat transfer body 18B. As a result, the thermal resistance from the first fixed contact portion 5 and the second fixed contact portion 6, or the movable contact portion 7, which are heat generating portions, to the first conductor 2 and the second conductor 3 is reduced by the rod-shaped heat transfer body 13A and the rod-shaped heat transfer body 13B, which have high thermal conductivity. Then, the heat transferred from the first fixed contact portion 5 and the second fixed contact portion 6 to the rod-shaped heat transfer body 13A and the rod-shaped heat transfer body 13B is easily transferred to the insulating heat transfer body 18A and the rod-shaped heat transfer body 18B and the first conductor 2 and the second conductor 3 through the heat transfer body ends 19A and the rod-shaped heat transfer body 19B, and the heat dissipation characteristic of the relay structure 1 can be improved.
[0035] 5, a top heat sink 20 is further disposed on the insulating heat transfer bodies 18A, 18B on the side opposite to the canopy portions 11A, 11B. In other words, the top heat sink 20 is provided in close contact with the insulating heat transfer bodies 18A, 18B on the side opposite to the side on which the first conductor 2 and the second conductor 3 are disposed on the insulating heat transfer bodies 18A, 18B.
[0036] As a result, the heat transferred from the first fixed contact portion 5 and the second fixed contact portion 6 to the rod-shaped heat transfer body 13A and the rod-shaped heat transfer body 13B can be easily transferred through the heat transfer body ends 19A, 19B, and then through the insulating heat transfer body 18A, 18B to the top surface heat dissipation body 20, thereby improving the heat dissipation characteristics of the relay structure 1.
[0037] Here, the top surface heat dissipation body 20 may be a metal plate or heat dissipation fins made of copper, copper alloy, aluminum, aluminum alloy, etc. The top surface heat dissipation body 20 may also be a water cooler mainly made of aluminum or aluminum alloy.
[0038] Here, as shown in the sixth cross-sectional view of the configuration of the relay structure 1 in the embodiment of the present invention in Fig. 6, a first heat sink 21A is further disposed between the canopy portion 11A and the first conductor 2, and a second heat sink 21B is further disposed between the canopy portion 11B and the second conductor 3. In other words, starting from the side where the outer shell portion 4 is disposed, which is the lower side in the figure, the first heat sink 21A is disposed in close contact with the first conductor 2, and an insulating heat conductor 18A is disposed on the first heat sink 21A. Similarly, starting from the side where the outer shell portion 4 is disposed, which is the lower side in the figure, the second heat sink 21B is disposed in close contact with the second conductor 3, and an insulating heat conductor 18B is disposed on the second heat sink 21B.
[0039] As a result, the heat transferred from the first fixed contact 5 and the second fixed contact 6 to the rod-shaped heat transfer body 13A and the rod-shaped heat transfer body 13B is transferred through the heat transfer body ends 19A and 19B, and from the insulating heat transfer body 18A and 18B to the first heat sink 21A and the second heat sink 21B. The transferred heat is then transferred from the first heat sink 21A and the second heat sink 21B to the first conductor 2 and the second conductor 3.
[0040] As a result, heat transferred from the outer shell 4 is transferred through the first fastener 8 and the second fastener 9 to the first conductor 2, the second conductor 3 and the first heat sink 21A and the second heat sink 21B, and is further transferred from the insulating heat sinks 18A and 18B through the heat sink ends 19A and 19B to the first heat sink 21A and the second heat sink 21B. This increases the number of paths for heat transfer and heat dissipation, making it possible to improve the heat dissipation characteristics of the relay structure 1.
[0041] Here, the first heat sink 21A and the second heat sink 21B may be metal plates made of copper, a copper alloy, aluminum, an aluminum alloy, or the like. [Industrial Applicability]
[0042] The relay structure of the present invention has the effect of improving heat dissipation characteristics, and is useful in various electric devices. [Explanation of symbols]
[0043] 1 Relay structure 2 First Conductor 3 Second Conductor 4 Outer shell 5 1st fixed contact section 5A opening 5B Bottom 6 Second fixed contact section 6A opening 6B Bottom 7 Movable contact section 8 First fastener 9 Second fastener 10A Rod metal 10B Rod-shaped metal 11A Canopy 11B Canopy 12A through hole 12B through hole 13A Rod-shaped heat transfer body 13B Rod-shaped heat transfer body 14 Drive unit 15 Terminals 16A Sealed area 16B Sealed area section 17A Heat transfer end 17B Heat transfer end 18A Insulating heat transfer material 18B Insulating heat transfer material 19A Heat transfer end 19B Heat transfer end 20 Top heat sink 21A 1st heat sink 21B Second heat sink
Claims
1. A first conductor; A second conductor; An outer shell; a first fixed contact portion and a second fixed contact portion each having a cylindrical shape and provided on the outer shell portion and partially exposed from the outer shell portion; a movable contact portion that is contained within the outer shell portion and is provided so as to be in contact with or in non-contact with the first fixed contact portion and the second fixed contact portion; a first fastener for fastening the first fixed contact portion and the first conductor; a second fastener for fastening the second fixed contact portion and the second conductor; Equipped with the first fastener and the second fastener are each composed of a rod-shaped metal having a thread groove on an outer periphery and a top portion that presses the first conductor and the second conductor, A through hole is provided in the axial direction of the metal rod, penetrating the metal rod and the canopy portion, a rod-shaped heat transfer body having a thermal conductivity higher than that of the first fastener and the second fastener is disposed in the through hole; an insulating heat transfer body is further disposed on the canopy portion on an opposite side of the first conductor and the second conductor; The end of the rod-shaped heat transfer body is in contact with the insulating heat transfer body. Relay structure.
2. A top surface heat dissipation body is further disposed on the insulating heat transfer body on the opposite side to the top portion. The relay structure of claim 1 .
3. A first heat sink is further disposed between the canopy portion and the first conductor, and a second heat sink is further disposed between the canopy portion and the second conductor.
3. The relay structure of claim 2.
Citation Information
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