JP2008153069A - Connecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting device with excellent heat radiation performance. <P>SOLUTION: The connecting device is for connecting a terminal 13 arranged at the tip of each conductive wire 11 and another terminal 14 arranged at the tip of each conductive wire 12, and includes a terminal board 4 for fixing the terminal 13 and the terminal 14. It also includes a wall part 2 formed so as to surround the terminal board 4, and a lid part 3 arranged at a top face of the wall part 2, as well as a resin member 5 arranged between the above two 4, 3. The resin member 5 is insulation displaced with the terminals 13 and the terminals 14 by being pinched between the lid part 3 and the terminal board 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a connection device. In particular, the present invention relates to a connection device for connecting a terminal of one conductor and a terminal of another conductor.

  In the electric circuit of the electric device, a connection portion between one conductor and another conductor may occur. One conducting wire and the other conducting wire are connected so that the inner core wires are electrically connected to each other. Alternatively, electrical conduction is achieved by contact between one contact portion and another contact portion.

  Japanese Patent Application Laid-Open No. 2002-10567 discloses a terminal box for a rotating electrical apparatus in which a terminal portion of a lead wire and a terminal portion of a cable are arranged in a sealed space formed inside the terminal box. . It is disclosed that after both are connected by an insulating coating sleeve, a granular filling material is filled in a sealed space formed in the terminal box, and the lead wire, the cable, and their connection portions are fixed and held. . According to the terminal box of the rotating electrical apparatus, it is disclosed that a strong connection structure can be realized without increasing the cost.

  In Japanese Patent Laid-Open No. 11-252895, an opening of a foil-shaped metal main body case is hermetically sealed with a metal lid so that the power electronic circuit is fixed to the bottom of the main body case. A circuit device is disclosed. In this device, it is disclosed that a smoothing capacitor as a heat-generating component is in contact with the inner main surface of the lid so as to be freely contacted and separated.

In Japanese Patent Application Laid-Open No. 2004-251161, a lid member is joined and fixed to the outside of the first housing component, and an electric motor is driven in an accommodation space surrounded by the first housing component and the lid member. An electric compressor that houses a motor drive circuit is disclosed. In this electric compressor, a motor drive circuit is attached to the lid member. In the assembly of the electric compressor, it is disclosed that the lid member is joined and fixed to the first housing component after the motor drive circuit is attached to the lid member.
JP 2002-10567 A Japanese Patent Laid-Open No. 11-252895 JP 2004-251161 A

  In order to electrically connect one conducting wire and another conducting wire to each other, a terminal is fixed to the tip of one conducting wire and the tip of the other conducting wire, and the terminals are connected to each other to make a connection. There is a way. The terminal fixed to one conductive wire and the terminal fixed to the other conductive wire come into contact with each other by being fixed to the surface of the terminal block with a bolt or the like, for example.

  In a connection device including such a terminal block, there is a problem that heat may be generated because contact resistance is generated at a contact portion between a terminal of one conductor and a terminal of another conductor. In addition, the terminal block is arranged inside a sealed box to ensure insulation from the outside, for example. Alternatively, the terminal block is disposed in a sealed space for waterproofing. As described above, since the terminal block is arranged in a sealed space, there is a problem that the generated heat is accumulated and it is difficult to release the heat to the outside.

  In particular, there is a problem that in a lead wire for passing a large current of about several tens of A, heat generation due to contact resistance increases and heat dissipation is difficult.

  An object of this invention is to provide the connecting device which has the outstanding heat dissipation performance.

  A connecting device of the present invention is a connecting device for connecting one terminal arranged at the tip of one conducting wire and another terminal arranged at the tip of another conducting wire. A terminal block for fixing the terminal and the other terminal so as to contact each other is provided. The wall part currently formed so that the circumference | surroundings of the said terminal block may be surrounded, and the cover part arrange | positioned at the top face of the said wall part are provided. A first resin member is provided between the terminal block and the lid. The first resin member is in pressure contact with the one terminal and the other terminal by being sandwiched between the lid portion and the terminal block.

  In the above invention, preferably, the first resin member is formed to be elastically deformed by being sandwiched between the lid portion and the terminal block.

  In the above invention, preferably, the first resin member is made of silicon rubber.

In the above invention, the terminal block is preferably made of ceramics.
Preferably in the said invention, the 2nd resin member arrange | positioned between the base material, the said one terminal, said other terminal, and the surface of the said base material is provided. The wall portion is formed to stand from the surface of the base material. The terminal block is fixed to the surface of the base material. The second resin member is formed in contact with the terminal block and the base material.

  ADVANTAGE OF THE INVENTION According to this invention, the connection apparatus which has the outstanding heat dissipation performance can be provided.

(Embodiment 1)
With reference to FIG. 1 to FIG. 4, the connection device in the first embodiment will be described.

  FIG. 1 is a schematic exploded perspective view of a connection device according to the present embodiment. The connection device in the present embodiment is a device for electrically connecting one conductor 11 and another conductor 12 inside. In the present embodiment, three conducting wires 11 and three conducting wires 12 are connected to each other.

  In the present embodiment, the conductive wires connected to each other are power lines for passing a large current. The power line is connected to a power motor, for example. Alternatively, the conducting wire in the present embodiment is a so-called power line. The conducting wires 11 and 12 as power lines are formed so that, for example, power of 5 A or more can flow. In the case of a larger current, the conductors 11 and 12 are formed so that, for example, a current of 50 A or more can flow. As a conducting wire, it is not restricted to this form, The present invention can be applied to a conducting wire for flowing an electric current of an arbitrary magnitude.

  The connection device in the present embodiment is formed in a rectangular parallelepiped shape. The connection device in the present embodiment is disposed on the surface of the substrate 1 as a base material. Examples of the substrate 1 include an electric circuit substrate and an automobile body. The base material 1 in this Embodiment is formed with the metal. The substrate 1 is not limited to this form, and can be formed of any material.

  In the present embodiment, one terminal 13 is fixed to the tip of one conductor 11. Further, another terminal 14 is fixed to the tip end of the other conducting wire 12. The respective terminals 13 and 14 are fixed to the terminal block 4 by bolts 22 as fixing members. The terminals 13 and 14 come into contact with each other by being fixed to the terminal block 4.

  FIG. 2 shows a schematic perspective view of the terminal block in the present embodiment. The terminal block 4 is formed so that the cross-sectional shape is a convex shape. The terminal block 4 is disposed on the surface of the substrate 1. The terminal block 4 is fixed to the substrate 1 with bolts 21. A hole 4 a is formed on the top surface of the terminal block 4. The hole 4a is threaded. The hole 4a is formed so that the bolt 22 can be fixed.

  The terminal block 4 is made of an insulating material. The terminal block 4 in the present embodiment is made of a material having high thermal conductivity. The terminal block 4 in the present embodiment is made of ceramics.

  Referring to FIG. 1, the connection device in the present embodiment has a wall portion 2 formed so as to surround the terminal block 4. The wall 2 is formed so as to stand from the surface of the substrate 1. The wall 2 is formed so as to be substantially square when viewed in plan. The wall 2 is not limited to this form, and may be formed so as to surround the terminal block.

  The wall 2 in the present embodiment is made of metal. The wall 2 is not limited to this form, and can be formed of any material. In the present embodiment, insertion holes 2a are formed in the two wall portions 2 facing each other. The insertion hole 2 a is an opening for inserting the conducting wire 11 or the conducting wire 12.

  The conducting wires 11 and 12 pass through the wall portion 2 through the insertion hole 2a. A sealing material 31 is disposed between the conducting wire 11 and the insertion hole 2a in order to fill a gap and seal the inside of the box. Moreover, the sealing material 31 is also arranged between the conducting wire 12 and the insertion hole 2a.

  The connection device in the present embodiment has a lid 3. Lid 3 in the present embodiment is formed in a flat plate shape. The lid 3 is formed so that the planar shape is substantially a quadrangle. The lid 3 is fixed to the wall 2 by a bolt 23 as a fixing member as indicated by an arrow 41. The lid 3 is disposed on the top surface of the wall 2.

  A sealing material is disposed at a contact portion between the lid portion 3 and the top surface of the wall portion 2 so that water or the like does not enter from the generated gap. That is, in the present embodiment, when assembling, the lid 3 is fixed after the sealing material is disposed on the top surface of the wall 2. Lid 3 in the present embodiment is made of metal. The lid 3 is not limited to this form, and can be formed of any material.

  Lid 3 in the present embodiment has fins 3a on the outer surface. The fin 3 a is formed so as to stand from the surface of the main body of the lid 3. A plurality of fins 3a are formed. The fin 3a is formed in a plate shape. The plurality of fins 3a are arranged so that the extending direction is substantially parallel to one direction. The plurality of fins 3a are arranged at intervals.

  The connection device in the present embodiment includes a resin member 5 as a first resin member. The resin member 5 is disposed so as to be sandwiched between the terminal block 4 and the lid 3. The resin member 5 is formed to be elastically deformed by being sandwiched between the lid portion 3 and the terminal block 4.

  The resin member 5 in the present embodiment has electrical insulation. The resin member 5 in the present embodiment is made of silicon rubber. In the resin member 5, impurities are mixed in silicon rubber. The resin member 5 is not limited to this form and may have an insulating property.

  The resin member 5 is preferably a material having high thermal conductivity among materials having insulating properties. As the resin member 5, for example, a material obtained by kneading a filler with rubber such as fluorine rubber or acrylic rubber can be used. As the resin member 5, for example, a so-called heat radiating rubber can be used.

  The resin member 5 is formed so as to be in pressure contact with one terminal 13 and another terminal 14 fixed to the terminal block 4 by being sandwiched between the lid portion 3 and the terminal block 4. Alternatively, the resin member 5 is formed so as to be in pressure contact with the bolt 22 by being sandwiched between the lid portion 3 and the terminal block 4. The resin member 5 in the present embodiment has a recess 5a. The recess 5 a is formed so as to follow the shapes of the conducting wires 11, 12, terminals 13, 14, bolts 22 and terminal block 4. The resin member 5 in the present embodiment has a recess 5a formed in advance when resin molding is performed.

  FIG. 3 shows a schematic cross-sectional view of the connection device in the present embodiment. FIG. 3 is a schematic cross-sectional view when the lid is fixed to the wall. A sealing material 31 is disposed around the conducting wires 11 and 12 inserted through the insertion hole 2a of the wall 2. A lid 3 is fixed to the top surface of the wall 2. In this way, a box is formed by the wall 2 and the lid 3, and an internal space is formed in the box. The box is hermetically sealed so that water and moisture do not enter the internal space.

  In the present embodiment, the resin member 5 disposed between the terminal block 4 and the lid portion 3 is in pressure contact with the lid portion 3. The resin member 5 is in pressure contact with the terminals 13 and 14. The resin member 5 is in pressure contact with the terminal block 4 and the bolt 22. The resin member 5 is in pressure contact with the conducting wires 11 and 12. Thus, since the resin member 5 in this Embodiment is formed so that it may elastically deform, it press-contacts to each member.

  FIG. 4 is a schematic exploded perspective view of the terminal block portion, the resin member, and the lid portion in the present embodiment. Terminals 13 and 14 are fixed to the conducting wires 11 and 12, respectively. The terminals 13 and 14 are fixed to the top surface of the terminal block 4 with bolts 22. In assembly, the terminals 13 and 14 are fixed to the terminal block 4. Next, as shown by the arrow 42, after the resin member 5 is disposed on the surface of the terminal block 4, the lid portion 3 is fixed to the top surface of the wall portion 2.

  As shown in FIG. 3, in the connection device in the present embodiment, a sealed space is formed by the wall portion 2 and the lid portion 3, and the terminal block 4 is disposed in the sealed space. By arranging the terminal block 4 in the sealed space, the terminal can be protected from water and moisture.

  On the other hand, heat is generated by the contact resistance of the portion where the terminal 13 and the terminal 14 are in contact. In the present embodiment, since the resin member 5 is disposed between the terminal block 4 and the lid portion 3, heat is transmitted to the lid portion 3 through the resin member 5. Heat is released from the lid 3 into the atmosphere. Thus, in the present embodiment, heat can be efficiently radiated even if the space in which the terminal block is arranged is sealed.

  Further, referring to FIG. 3, resin member 5 in the present embodiment presses bolt 22. For this reason, it can suppress that the volt | bolt 22 loosens by use. When the bolt 22 is loosened, a backlash (gap) is generated between the terminals 13 and 14. The respective terminals 13 and 14 can be moved. As a result, the contact resistance increases and the terminals 13 and 14 become high temperature. However, in this Embodiment, it can suppress that the volt | bolt 22 which is fixing the terminals 13 and 14 loosens.

  The resin member 5 in the present embodiment is formed so as to be elastically deformed by being sandwiched between the lid portion 3 and the terminal block 4. With this configuration, the resin member can be pressed against the terminals 13 and 14, the bolt 22, or the terminal block 4, and heat can be efficiently transferred to the resin member. Alternatively, the heat transfer area through which heat is transferred to the resin member is increased by being in close contact with the terminals 13, 14 and the like. As a result, heat dissipation can be further improved.

  In the resin member 5 in the present embodiment, a recess 5 a is formed so as to follow the shape of the terminals 13 and 14. With this configuration, the recess 5 a is in close contact with the terminals 13 and 14. Heat generated at the terminals 13 and 14 can be efficiently transmitted to the resin member 5.

  As the resin member 5, it is not restricted to this form, The recessed part 5a does not need to be formed. Alternatively, the resin member has sufficient elasticity, and the resin member is deformed by the fastening force of the fixing member when the lid portion 3 is fixed to the top surface of the wall portion 2, and is in close contact with the terminals 13, 14 or the bolts 22. It may be formed so as to.

  Further, since the resin member 5 has elasticity, it is possible to absorb the vibration of the whole connecting device and the vibrations of the conductors 11 and 12. As a result, it is possible to prevent loosening of the bolt 22 that fixes the terminals 13 and 14 to the terminal block 4.

  The resin member 5 in the present embodiment is formed of silicon rubber. With this configuration, it is possible to give elasticity to the first resin member while ensuring the insulation of the first resin member.

  In the present embodiment, since the insulating resin member 5 is disposed between the lid 3 and the terminals 13 and 14, the distance between the terminals 13 and 14 and the lid 3 is reduced. Can do. That is, instead of securing insulation with air, insulation can be secured with the resin member 5, and the insulation distance between the terminals 13, 14 and the lid 3 can be shortened. As a result, the height of the wall portion 2 can be reduced, and the connection device can be reduced in size.

  In the present embodiment, the terminal block 4 is made of ceramics. Since the terminal block 4 is formed of ceramics, for example, the thermal conductivity can be made higher than when the terminal block 4 is formed of resin or the like. Moreover, high insulation can be ensured.

  In the present embodiment, lid 3 is made of metal. With this configuration, heat from the resin member 5 can be efficiently transmitted to the lid 3. Furthermore, heat can be efficiently radiated from the lid 3 to the atmosphere.

  In the present embodiment, fins 3 a are formed on lid 3. With this configuration, the heat dissipation from the lid 3 to the atmosphere can be improved. In the present embodiment, the fin 3a is formed on the lid 3. However, the present invention is not limited to this configuration, and the fin 3a may not be formed. Or the fin may be formed in the wall part. Alternatively, a water jacket or the like for cooling the lid portion may be disposed instead of the fins. Thus, the cooling device may be arranged on the lid or the wall.

  The resin member 5 in the present embodiment is assembled in a state where it is separated from the lid portion 3, but is not limited to this form. For example, the resin member 5 may be fixed to the lid portion 3 in advance. Absent.

(Embodiment 2)
With reference to FIG. 5, the connection apparatus in Embodiment 2 is demonstrated.

  FIG. 5 is a schematic cross-sectional view of the connection device in the present embodiment. The connection device in the present embodiment includes a resin member 6 as a second resin member. The resin member 6 in the present embodiment is formed of the same material as the resin member 5 as the first resin member.

  The resin member 6 is formed so as to surround the terminal block 4. The resin member 6 is sandwiched between the substrate 1, the terminals 13 and 14 and the conducting wires 11 and 12. The resin member 6 is formed so as to contact the substrate 1. The resin member 6 is formed so as to contact the side surface of the terminal block 4. Resin member 6 in the present embodiment is in pressure contact with conductive wires 11 and 12 and terminals 13 and 14.

  The device in the present embodiment includes an exterior plate 7. The exterior plate 7 constitutes the outermost casing. In the present embodiment, the outside of the exterior plate 7 is the outside of the device, and the inside of the exterior plate 7 is the inside of the device. The exterior board 7 has a hole 7a. The connecting device is formed so that the lid 3 is exposed from the hole 7a. The wall 2 is disposed inside the exterior plate 7. As for the cover part 3, the fin 3a is exposed toward the outer side.

  In the present embodiment, a resin member 6 as a second resin member is arranged so as to contact the terminal block 4 and the substrate 1. With this configuration, heat generated by the contact resistance between the terminals 13 and 14 can be transmitted to the substrate 1 through the resin member 6. In this way, the heat dissipation path can be increased, and the heat dissipation performance is improved. Further, the resin member 6 is in contact with the terminals 13 and 14. With this configuration, heat generated by the terminals 13 and 14 can be transmitted to the substrate 1 through the resin member 6. As a result, the heat dissipation characteristics are improved.

  Moreover, in this Embodiment, the connection apparatus is formed so that the cover part 3 may be exposed from the hole 7a of the exterior board 7 of an apparatus. With this configuration, the lid 3 can be exposed to the outside air, and the heat dissipation performance can be improved.

  Since other configurations, operations, and effects are the same as those in the first embodiment, description thereof will not be repeated here.

  In the respective drawings described above, the same or corresponding parts are denoted by the same reference numerals.

  In addition, the said embodiment disclosed this time is an illustration in all the points, Comprising: It is not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

1 is a schematic exploded perspective view of a connection device according to Embodiment 1. FIG. FIG. 3 is a schematic perspective view of a terminal block in the first embodiment. 1 is a schematic cross-sectional view of a connection device in a first embodiment. FIG. 3 is an exploded perspective view of a terminal block, a resin member, and a lid in the first embodiment. FIG. 5 is a schematic cross-sectional view of a connection device in a second embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Board | substrate, 2 Wall part, 2a Insertion hole, 3 Cover part, 3a Fin, 4 Terminal block, 4a Hole part, 5,6 Resin member, 5a Recessed part, 7 Exterior plate, 7a Hole part, 11,12 Conductor, 13, 14 terminals, 21-23 bolts, 31 sealing material, 41, 42 arrows.

Claims (5)

A connection device for connecting one terminal arranged at the tip of one conducting wire and another terminal arranged at the tip of another conducting wire,
A terminal block for fixing the one terminal and the other terminal so as to contact each other;
A wall formed so as to surround the terminal block;
A lid portion disposed on the top surface of the wall portion;
A first resin member disposed between the terminal block and the lid,
The connection device, wherein the first resin member is in pressure contact with the one terminal and the other terminal by being sandwiched between the lid portion and the terminal block.   The connection device according to claim 1, wherein the first resin member is formed to be elastically deformed by being sandwiched between the lid portion and the terminal block.   The connection device according to claim 1, wherein the first resin member is formed of silicon rubber.   The connection device according to claim 1, wherein the terminal block is made of ceramics. A substrate;
A second resin member disposed between the one terminal and the other terminal and the surface of the substrate;
The wall portion is formed to stand from the surface of the base material,
The terminal block is fixed to the surface of the base material,
The connection device according to claim 1, wherein the second resin member is formed so as to contact the terminal block and the base material.

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