Electrical connection device

Abstract

The invention provides an electric connection device, and aims to easily assemble a sealing part relative to a terminal in the electric connection device. An electrical connection device is provided with: a resin base (22); a terminal (30) having an embedded portion (32) located within the resin base; and a sealing part (40) interposed between the fitting part and the resin base (22). The sealing part is a heat-shrinkable tube which is thermally shrunk in a state of covering the fitting part.

Description

Technical Field

[0001] The present disclosure relates to electrical connection devices. Background Art

[0002] Patent Document 1 discloses a terminal block including a housing having a resin portion, a bus bar, and a sealing portion. In Patent Document 1, the sealing portion is formed of an adhesive sheet. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2017-147147 Summary of the invention Problems to be solved by the invention

[0004] Here, it is desired to make the assembly of the sealing part relative to the busbar easier.

[0005] Therefore, an object of the present disclosure is to facilitate assembly of a sealing portion with respect to a terminal in an electrical connection device. Solutions to Solve Problems

[0006] The electrical connection device disclosed in the present invention comprises: a resin base; a terminal having an embedded portion located in the resin base; and a sealing portion interposed between the embedded portion and the resin base, wherein the sealing portion is a heat shrinkable tube that is heat-shrunk while covering the embedded portion. Effects of the Invention

[0007] According to the present disclosure, it is possible to easily assemble the sealing portion with respect to the terminal in the electrical connection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a perspective view showing a terminal block. Figure 2 This is a perspective view showing a terminal block. Figure 3 yes Figure 1 Sectional view along line III-III. Figure 4 yes Figure 2 IV-IV line cross-sectional view. Figure 5 It is a perspective view showing a terminal and a sealing portion. Figure 6 This is an explanatory diagram showing an example of a work of inserting a terminal through a heat shrink tube. Figure 7 It is an explanatory diagram showing an example of placement of the terminal and the sealing portion in a mold. DETAILED DESCRIPTION

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be described below.

[0010] The electrical connection device of the present disclosure is described as follows.

[0011] (1) An electrical connection device comprising: a resin base; a terminal having an embedded portion located in the resin base; and a sealing portion interposed between the embedded portion and the resin base, the sealing portion being a heat shrinkable tube that is heat-shrunk while covering the embedded portion.

[0012] According to the electrical connection device, the sealing portion is a heat shrinkable tube that is heat-shrunk while covering the embedded portion. Therefore, if the heat shrinkable tube is heat-shrunk by heating after the terminal is passed through the heat shrinkable tube before heat shrinkage, the terminal can be easily assembled to the heat shrinkable tube. Therefore, the sealing portion can be easily assembled to the terminal. In addition, since the heat shrinkable tube surrounds the embedded portion in a uniform form, it is also expected that the sealing performance can be improved.

[0013] (2) Based on the electrical connection device of (1), it may also be that the terminal has a first end and a second end, the embedded portion is located between the first end and the second end, and the embedded portion is located inside the resin base when the first end and the second end are exposed from the resin base.

[0014] In this case, by electrically connecting the first end and the second end to different conductive paths, the different conductive paths are electrically connected via the terminals. A sealing portion for imparting sealing properties to the terminals for relaying different conductive paths can be easily mounted on the embedded portion.

[0015] (3) Based on the electrical connection device of (2), the resin base may have a mounting portion mounted on the device case in a manner to close the connection opening of the device case, and when the resin base is mounted on the device case, the terminal is supported on the resin base in a manner such that the first end faces outside the device case and the second end faces inside the device case through the connection opening.

[0016] In this case, the terminal penetrates the resin base while the resin base covers the connection opening. The conductive path inside the device case is electrically connected to the conductive path outside the device case by the terminal. In this case, the fluid intrusion along the terminal that penetrates the device case through the opening is suppressed by the sealing portion. Therefore, the sealing performance inside and outside the device case is improved.

[0017] (4) In any one of the electrical connecting devices (1) to (3), the entire sealing portion may be covered in the resin base.

[0018] In this case, the boundary between the terminal and the sealing portion is covered in the resin base, so that the infiltration of the fluid along the terminal can be more reliably suppressed.

[0019] [Details of the embodiments of the present disclosure] Hereinafter, specific examples of the electrical connection device of the present disclosure will be described with reference to the drawings. In addition, the present disclosure is not limited to these examples, but is indicated by the claims, and is intended to include all changes within the meaning and scope of the claims and their equivalents.

[0020] [Implementation Method] The following is a description of the electrical connection device involved in the embodiment. In this embodiment, an example in which the electrical connection device is a terminal block is described. The terminal block is fixed to the device and is a component for electrically connecting the device to other electrical devices. The terminal is a component for electrical connection and is a wiring component. The device may be, for example, a rotating motor, an inverter, a battery, a DC-DC converter, or a junction box.

[0021] Figure 1 and Figure 2 It is a perspective view showing the terminal block 20 . Figure 3 yes Figure 1 Sectional view along line III-III. Figure 4 yes Figure 2 IV-IV line cross-sectional view. Figure 1 and Figure 3 In FIG. 1 , the device housing 12 of the device 10 is indicated by a two-dot chain line.

[0022] The device 10 is configured to accommodate electrical components in a device housing 12. A connection opening 12h is formed in the device housing 12. The connection opening 12h is an opening that passes through the inside and outside of the device housing 12. The terminal 30 is configured to pass through the connection opening 12h. The connection opening 12h is not particularly limited in shape as long as it is a through hole that allows the terminal 30 to pass through. The connection opening 12h may be formed in a long hole shape, for example.

[0023] The terminal block 20 includes a resin base 22, terminals 30, and a sealing portion 40. In the present embodiment, the terminal block 20 includes a plurality of terminals 30, more specifically, six terminals 30. The number of terminals included in the terminal block is arbitrary.

[0024] The resin base 22 is a part formed of resin. The resin base 22 is a part obtained by, for example, molding with resin.

[0025] The terminal 30 is a conductive component having an embedded portion 32. The terminal 30 is a metal component formed by, for example, stamping a metal plate. The terminal 30 is an elongated component, and a portion of the length thereof is the embedded portion 32. The embedded portion 32 is a portion located inside the resin base 22.

[0026] The sealing portion 40 is a portion interposed between the embedding portion 32 and the resin base 22. The sealing portion 40 plays a role in suppressing the intrusion of a fluid along the interface between the embedding portion 32 and the resin base 22.

[0027] The sealing portion 40 is a heat shrinkable tube that is heat-shrunk in a state of covering the embedded portion 32. The heat shrinkable tube is a resin member that is pre-formed into a cylindrical shape and can shrink due to heat and become thinner than the initial thickness. The terminal 30 can be easily inserted into the heat shrinkable tube before heating, which is thicker than the heat shrinkable tube after heating. In addition, the heat shrinkable tube after heating becomes thinner due to heat shrinkage and is pressed against the surface of the embedded portion 32. As a result, the inner circumferential surface of the heat shrinkable tube contacts the surface of the embedded portion 32, and the embedded portion 32 and the sealing portion 40 are sealed.

[0028] Since the sealing portion 40 covers the embedded portion 32, the sealing portion 40 is also located in the resin base 22. The resin base 22 is molded using the embedded portion 32 and the sealing portion 40 covering the embedded portion 32 as an insert. When molten resin is injected into the mold, the resin flows along the outer peripheral surface of the sealing portion 40, so that the space between the sealing portion 40 and the resin base 22 is also sealed.

[0029] The structure of each part will be described in more detail.

[0030] Figure 5 3 is a perspective view showing the terminal 30 and the sealing portion 40. Figure 1 to Figure 5 As shown in FIG. 1 , the terminal 30 is a member obtained by punching a metal plate. Therefore, the terminal 30 has a single-layer structure. The terminal 30 may also be bent as required.

[0031] In the present embodiment, the terminal 30 has the above-mentioned embedding portion 32, a first end portion 34, and a second end portion 36. In the extension direction of the terminal 30, the embedding portion 32 is located between the first end portion 34 and the second end portion 36.

[0032] More specifically, the terminal 30 is a strip-shaped metal plate, and is a member bent at a bent portion 30V located near one end thereof. In the present embodiment, the bent portion 30V is bent at a right angle, and the terminal 30 is bent in an L-shape as a whole.

[0033] The bent portion 30V of the terminal 30 and the short side portion extending from the bent portion 30V toward one end constitute a first end portion 34. The first end portion 34 has an insertion hole 34h.

[0034] The end of the terminal 30 opposite to the first end 34 is the second end 36. That is, the end region of the long side portion of the terminal 30 from the bend 30V toward the other end, which is away from the bend 30V, is the second end 36. An insertion hole 36h is formed in the second end 36. The second end 36 can be screwed and fastened to the connection object conductor by using the insertion hole 36h.

[0035] The portion of the terminal 30 between the first end 34 and the second end 36 is the embedded portion 32. That is, the middle area of ​​the long side portion of the terminal 30 from the curved portion 30V toward the other end, away from the curved portion 30V and close to the curved portion 30V is the embedded portion 32. A through hole 31h may also be formed in the embedded portion 32. The through hole 31h may be formed at a position close to the first end 34. It is better for the sealing portion 40 to cover the embedded portion 32 at a position avoiding the through hole 31h.

[0036] In addition, the terminal does not have to be bent on the way, and the terminal can also be formed into a straight strip. Therefore, the first end does not have to have a bent portion. The first end and the second end can be formed into a plate-like shape without a through hole as long as they are parts that can contact the connection object conductor. The first end and the second end can also be a structure with a spring part that can elastically contact the connection object conductor. The terminal does not have to be strip-shaped. For example, the terminal can also be a round rod or a polygonal rod.

[0037] The sealing portion 40 covers the above-mentioned fitting portion 32. In the present embodiment, the sealing portion 40 is formed in a flat square tube shape matching the outer peripheral surface of the fitting portion 32.

[0038] As described above, the sealing portion 40 is a heat shrinkable tube that has been heat shrunk. Figure 6 The heat shrinkable tube 40B before heat shrinkage is shown in FIG.

[0039] For example, a heat shrinkable tube is manufactured by stretching a resin member formed into a cylindrical shape by extrusion into a thicker cylindrical shape while heating and then cooling the tube. The heat shrinkable tube manufactured in this way has a shape memory property that it shrinks to the thin cylindrical shape before being stretched when heated.

[0040] The inner circumference of the heat shrink tube 40B before heat shrinkage is larger than the outer circumference of the embedded portion 32, preferably larger than the outer circumference of the second end 36. Therefore, the second end 36 and the embedded portion 32 of the terminal 30 can be easily inserted into the heat shrink tube 40B before heat shrinkage.

[0041] When the heat shrink tube 40B is in the minimum heat shrink tube state of the minimum size that can be heat shrunk, the size of the inner circumference in the minimum heat shrink tube state is equal to or smaller than the size of the outer circumference of the embedded portion 32. Therefore, the heat shrink tube 40B can be heat shrunk in a manner that fastens the embedded portion 32, and the sealing portion 40 can be in contact with the outer circumferential surface of the embedded portion 32 in the entire circumferential direction of the embedded portion 32. The sealing portion 40 is maintained in contact with the outer circumferential surface of the embedded portion 32 at least by the heat shrinkage force of the sealing portion 40.

[0042] As the material of the heat shrinkable tube, for example, a thermoplastic synthetic resin can be used. As the thermoplastic resin, it is preferred to use, for example, a thermoplastic resin having a cross-linked structure. The cross-linked structure can be obtained by irradiating an electron beam. The material of the thermoplastic resin can also be a synthetic resin whose main component is a polyolefin resin such as cross-linked polyethylene or cross-linked polypropylene. If the material of the thermoplastic resin is a resin whose main component is the same resin as the resin base 22, the adhesion between the sealing portion 40 and the resin base 22 will be improved, but this is not necessary. The material of the heat shrinkable tube can be a single material or a material obtained by appropriately combining two or more materials.

[0043] The heat shrink tube may also contain an adhesive. For example, the heat shrink tube may also have a tube base that serves as a substrate and a layer of adhesive covering the inner circumference of the tube base. The adhesive may be a resin having a melting point or glass transition temperature lower than that of the tube base. Thus, the adhesive melts before the tube base melts, and the adhesive can be in close contact with the inner circumference of the tube base and the outer circumference of the embedded portion 32.

[0044] The adhesive may be bonded to the surface of the tube base and the embedded portion 32 by an anchoring effect, by intermolecular forces, or by chemical bonds.

[0045] The sealing portion 40 may cover only the embedded portion 32, or may cover the first end portion 34 or the second end portion 36. The entire sealing portion 40 may also be covered in the resin base 22. Thus, the opening of the sealing portion 40 will not be exposed to the outside from the resin base 22, making it difficult for fluid to enter the boundary between the opening of the sealing portion 40 and the terminal 30.

[0046] In this embodiment, the sealing portion 40 is located inside the boundary between the embedded portion 32 and the first end portion 34 and inside the boundary between the embedded portion 32 and the second end portion 36. Therefore, the sealing portion 40 is buried in the resin base 22 together with the embedded portion 32 and is not exposed outside the resin base 22.

[0047] like Figure 1 to Figure 4As shown, the resin base 22 is a part fixed to the device 10 while holding the terminal 30. The resin base 22 is formed of a resin that is an insulator. The resin forming the resin base 22 may be the same as or different from the resin forming the sealing portion 40. The terminal 30 is supported at a certain position relative to the device 10 by the resin base 22.

[0048] The resin base 22 includes a mounting portion 24 , an outer extended holding portion 26 , and an inner extended holding portion 28 .

[0049] The mounting portion 24 is a portion mounted on the device box 12 in a manner that closes the connection opening 12h of the device box 12. In the present embodiment, the mounting portion 24 is formed in a shape that closes the outer opening of the connection opening 12h of the device box 12 and covers the outer opening peripheral portion of the connection opening 12h, and is formed in a rectangular plate shape that is larger than the outer opening of the connection opening 12h. A concave portion for weight reduction or a rib shape for reinforcement may also be formed in the mounting portion 24.

[0050] Insertion holes 24h are formed at the outer periphery of the mounting portion 24, here, at the four corners. The outer periphery of the mounting portion 24 overlaps with the outer surface of the device case 12 at the connection opening 12h. In this state, the screw S is passed through the insertion hole 24h and screwed and fastened with the nut provided in the device case 12. Thus, the resin base 22 is fixed to the device case 12 in a state where the connection opening 12h is closed.

[0051] The mounting portion 24 has an annular sealing portion 25 that seals between the resin base 22 and the connection opening 12h. The annular sealing portion 25 is an annular elastic member, for example, a rubber member. The annular sealing portion 25 is arranged in the mounting portion 24 at a portion facing the outer surface of the device box 12 at the periphery of the connection opening 12h. The annular sealing portion 25 can also be mounted on the mounting portion 24 by an embedded structure or the like.

[0052] When the mounting portion 24 is mounted on the device housing 12, the annular sealing portion 25 is compressed in the entire circumferential direction of the connection opening 12h between the mounting portion 24 and the device housing 12. Thus, the mounting portion 24 and the device housing 12 are sealed, and the fluid is prevented from entering through the gap between the mounting portion 24 and the device housing 12.

[0053] The outer extension holding portion 26 protrudes from the mounting portion 24 to the outside of the device box 12. The inner extension holding portion 28 protrudes from the mounting portion 24 toward the inside of the device box 12. The outer extension holding portion 26 and the inner extension holding portion 28 are located on the same straight line along the axial direction of the connection opening 12h. The embedded portion 32 passes through the mounting portion 24 and is disposed inside the outer extension holding portion 26 and the inner extension holding portion 28.

[0054] A placement recess 26g in which a nut N can be placed is formed at the outer end of the outer extension holding portion 26. The nut N placed in the placement recess 26g faces the front end side of the outer extension holding portion 26. The first end portion 34 is exposed from the outer extension holding portion 26 in front of the curved portion 30V and overlaps with the nut N. In this state, the insertion hole 34h of the first end portion 34 is arranged at a position overlapping with the screw hole of the nut N. The first end portion 34 can be screwed and fastened to the conductor to be connected by the insertion hole 34h and the nut N.

[0055] A placement recess 28g in which a nut N can be placed is formed at the inner end of the inner extended holding portion 28. The nut N placed in the placement recess 28g faces one side of the front end of the inner extended holding portion 28. The second end portion 36 is exposed from the inner extended holding portion 28 in front of the placement recess 28g and overlaps with the nut N. In this state, the insertion hole 36h of the second end portion 36 is arranged at a position overlapping with the screw hole of the nut N. The second end portion 36 can be screwed and fastened to the conductor to be connected by the insertion hole 36h and the nut N.

[0056] The counterpart conductor connected to the first end portion 34 and the counterpart conductor connected to the second end portion 36 are electrically connected via the embedding portion 32 .

[0057] A plurality of (six in this case) combinations of the outer extended holding portion 26 and the inner extended holding portion 28 are provided corresponding to the terminals 30 .

[0058] The plurality of outer extension holding portions 26 are arranged at intervals in the longitudinal direction of the connection opening 12h. The resin base 22 has a peripheral wall 22w surrounding the plurality of outer extension holding portions 26 arranged at intervals.

[0059] The plurality of inner extension holding portions 28 are continuously arranged in the longitudinal direction of the connection opening 12h. A partition wall 28w is provided between each of the inner extension holding portions 28.

[0060] The terminals 30 are held in parallel at intervals in the resin base 22. The plurality of terminals 30 are held by the resin base 22 in a state of being insulated from one another.

[0061] The embedded portion 32 of the terminal 30 is embedded in the resin base 22. When the resin base 22 is mounted on the device case 12, the first end portion 34 is exposed from the outer extension holding portion 26 and faces the outside of the device case 12. In this state, the second end portion 36 is exposed from the inner extension holding portion 28 and faces the inside of the device case 12 through the connection opening 12h.

[0062] In the present embodiment, the terminal block 20 includes a relay connector device 60. The relay connector device 60 is a device for relaying a connector inside the device case 12 and a connector outside the device case 12 separately from the terminal 30. The relay connector device 60 may be omitted.

[0063] <Laws> An example of a method of manufacturing the terminal block 20 will be described.

[0064] like Figure 6 As shown, a heat shrink tube 40B before heat shrinkage is prepared, which is cut into a length suitable for covering a portion of the embedding portion 32 in the longitudinal direction. Then, the embedding portion 32 of the terminal 30 is inserted into the heat shrink tube 40B. The work of inserting the embedding portion 32 into the heat shrink tube 40B can also be performed by an automatic insertion robot.

[0065] In this state, the heat shrink tube 40B is heated. Then, the heat shrink tube 40B is heat-shrunk and becomes in close contact with the outer periphery of the embedded portion 32. The heat shrinkage of the heat shrink tube 40B can be performed in less than one minute, for example. Therefore, the assembly operation of the sealing portion 40 with respect to the embedded portion 32 can be performed in a short time.

[0066] In order to keep the heat shrink tube 40B at a certain position relative to the embedding portion 32 during heat shrinkage, the heat shrink tube 40B may be temporarily bonded to the embedding portion 32 using an adhesive. The bonding work using an adhesive may also be performed by an automatic robot.

[0067] Afterwards, if Figure 7 As shown, the terminal 30 equipped with the sealing portion 40 is placed in a mold 70 for molding the resin base 22. At this time, the first end 34 and the second end 36 are installed in the positioning recess formed in the mold 70, so that the embedded portion 32 is arranged in the space inside the mold. In addition, in the case where there is a part in the resin base 22 that is difficult to process by a single mold molding, the resin base 22 can also be divided into a primary mold molding part and a secondary mold molding part, and a core can also be used for molding. Figure 7 In the example shown, the terminal 30 on which the end of the inner extended holding portion 28 of the resin base 22 is molded at one time is set in the mold 70 .

[0068] Then, by injecting molten resin into the mold space, the molten resin fills the space between the embedded portion 32, the sealing portion 40 and the mold surface. After that, the molten resin is cooled and solidified. Therefore, the resin constituting the resin base 22 is fixed in a state of close contact with the surface of the sealing portion 40 according to the filling pressure during injection molding. The resin constituting the resin base 22 can be bonded to the surface of the sealing portion 40 by an anchoring effect, can be bonded by intermolecular force, or can be bonded by chemical bonds.

[0069] The surface of the sealing portion 40 may be melted by the temperature of the resin injected into the mold 70 , so that the resin and the surface of the sealing portion 40 may be more closely bonded.

[0070] In addition, even if the temperature of the resin injected into the mold 70 exceeds the melting point of the sealing portion 40, at least the contact state between the terminal 30 and the sealing portion 40 can be maintained in the state of heat shrinkage in consideration of the time that the sealing portion 40 is exposed to the high temperature resin. In addition, by appropriately setting the conditions during mold molding, the thickness of the sealing portion 40 can also be maintained constant.

[0071] <Effects, etc.> According to the terminal block 20 constructed as described above, the sealing portion 40 is a heat shrinkable tube that is heat-shrunk in a state where the embedded portion 32 is covered. Therefore, if the heat shrinkable tube 40B is heat-shrunk by heating after the terminal 30 passes through the heat shrinkable tube 40B before heat shrinkage, the heat shrinkable tube can be easily assembled to the terminal 30 as the sealing portion 40. In addition, the sealing portion 40 obtained by heat shrinking the heat shrinkable tube 40B surrounds the embedded portion 32 with a uniform thickness and a uniform width. Therefore, the state in which the sealing portion 40 covers the embedded portion 32 is stable, and it is also possible to expect an improvement in the sealing performance.

[0072] In addition, the operation of inserting the terminal 30 into the heat shrink tube 40B is easy, and the operation of heat shrinking the heat shrink tube 40B can also be easily performed in a short time. Therefore, the terminal block 20 provided with the sealing portion 40 in the embedding portion 32 can be easily manufactured in a short time.

[0073] That is, heat shrink tubes are generally used for mechanical protection, waterproofing, or insulation of electric wires. In addition, waterproofing is for the purpose of waterproofing the portion covered by the heat shrink tube from the outside, which is different in principle from the entry of fluid along the surface of the portion covered by the heat shrink tube. According to these purposes, the embedded portion 32 is covered by the resin base 22, achieving the purpose of mechanical protection, waterproofing from the outside, and insulation. Therefore, if it is for the usual purpose of the heat shrink tube, it is not conceivable to cover the embedded portion 32 with a heat shrink tube.

[0074] According to the unique perspective of the inventors of the present application, it was found that by placing a sealing portion 40 formed of a heat-shrinkable tube between the embedded portion 32 and the resin base 22, it is possible to suppress the intrusion of the fluid along the gap between the embedded portion 32 and the resin base 22. Thus, the sealing performance between the two ends of the terminal 30 in the terminal block 20 can be improved by easily forming the sealing portion 40.

[0075] The terminal 30 is a relay terminal having a first end 34 and a second end 36. By electrically connecting the first end 34 and the second end 36 to different conductive paths, the different conductive paths are electrically connected via the terminal 30. A sealing portion 40 for imparting sealing properties to the terminal 30 for relaying different conductive paths can be easily assembled to the embedded portion 32.

[0076] In addition, the resin base 22 is a terminal base installed in the device case 12. When the resin base 22 covers the connection opening 12h, the terminal 30 passes through the resin base 22, with the first end 34 facing the outside of the device case 12 and the second end 36 facing the inside of the device case 12. Therefore, the conductive path inside the device case and the conductive path outside the device case are electrically connected via the terminal 30. In this case, the resin base 22 closes the connection opening 12h, which can play a role in sealing the inside and outside of the device case 12. The intrusion of the fluid along the terminal 30 that passes through the resin base 22 is suppressed by the sealing portion 40. Therefore, the sealing performance is improved inside and outside the device case 12.

[0077] In addition, since the entire sealing portion 40 is covered in the resin base 22, the boundary between the terminal 30 and the sealing portion 40, especially the boundary between the opening of the sealing portion 40 and the terminal 30, is covered in the resin base 22. Therefore, the entry of the fluid along the terminal 30 can be more reliably suppressed.

[0078] [Modifications] Furthermore, the electrical connection device may not be a terminal block, but may be a connector in which the terminals are insert-molded in resin or a connector in which the terminals are directly insert-molded in a housing of a device.

[0079] In addition, the respective configurations described in the above-mentioned embodiment and the respective modifications can be appropriately combined as long as there is no contradiction between them. Description of Reference Numerals

[0080] 10. Equipment 12 Equipment box 12h connection opening 20 Terminal Block 22 Resin base 22w Peripheral wall 24 Installation 24h plug-in hole 25 Annular seal 26 Outer extension retaining part 26g placement recess 28 Inner extension retaining part 28g placement recess 28w partition wall 30 terminals 30V Bend 31h Through hole 32 Embedded Section 34 First end 34h, 36h through hole 36 Second end 40 Sealing part 40B Heat Shrink Tube 60 Relay connector device 70 Mould N Nut S screw

Claims

1. An electrical connection device, comprising: Resin base; a terminal having an embedded portion located within the resin base; and a sealing portion, interposed between the embedding portion and the resin base, The sealing portion is a heat shrinkable tube that is heat-shrunk while covering the embedding portion.

2. The electrical connection device according to claim 1, wherein: The terminal has a first end and a second end, and the embedded portion is located between the first end and the second end. The embedded portion is located in the resin base in a state where the first end portion and the second end portion are exposed from the resin base.

3. The electrical connection device according to claim 2, wherein: The resin base has a mounting portion mounted on the device box in a manner of closing a connection opening of the device box. When the resin base is mounted on the device case, the terminal is supported by the resin base in such a manner that the first end faces outside the device case and the second end faces inside the device case through the connection opening.

4. The electrical connection device according to any one of claims 1 to 3, wherein: The entire sealing portion is covered in the resin base.

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