JP2015138679A - Terminal block and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal board having excellent performance, and to provide a manufacturing method of the terminal board.SOLUTION: A terminal board 1 includes a housing 2 having a resin mold part 21, a tabular bus bar 3 and a seal part 4. The bus bar 3 integrally includes a buried part 32 buried in the resin mold part 21 and a connection part 31 projected from an aperture end 211 of the resin mold part 21 to the external. The seal part 4 is arranged on a part of a gap 5 existing between the buried part 32 and the resin mold part 21 to seal the gap 5. The seal part 4 contains halogen-containing rubber of 100 pts.mass and antioxidant of 1 pts.mass or more.

Description

  The present invention relates to a terminal block and a manufacturing method thereof.

  For example, some terminal blocks used for connecting automobile wire harnesses have a metal bus bar and a housing, and the bus bar is fixed to a resin portion of the housing by insert molding. The resin portion of the housing is usually difficult to adhere to metal, and is likely to undergo dimensional changes due to molding shrinkage or the like. Therefore, a gap is inevitably formed between the housing and the bus bar. On the other hand, the terminal block may be required to liquid-tightly seal between the bus bar and the housing. In this case, usually, a sealing means for sealing the gap in a liquid-tight manner is provided between the housing and the bus bar.

  For example, Patent Document 1 discloses an example of a connector in which a metal bus bar and a resin connector housing are integrally formed by insert molding. In this connector, a seal portion is provided in advance in a portion of the bus bar embedded in the connector housing. Therefore, the resin portion and the seal portion of the housing are bonded during insert molding. Thereby, the clearance gap between a bus-bar and a connector housing is block | closed, and both are sealed liquid-tightly.

JP2013-45510A

  Generally, a resin-based adhesive is used for the seal portion of the terminal block. However, resin-based adhesives have a problem of softening as heat aging progresses. For this reason, there is a concern that the adhesive leaks from the connector housing when the terminal block is used for a long period of time. In recent years, there has been a demand for a terminal block that can suppress the leakage of the adhesive for a longer period of time. With conventional adhesives, it has become difficult to satisfy the required performance.

  The present invention has been made in view of such a background, and intends to provide a terminal block having excellent performance and a method for manufacturing the terminal block.

One aspect of the present invention is a housing having a resin molded portion;
A plate-like bus bar integrally provided with an embedded portion embedded in the resin molded portion and a connecting portion protruding outward from an opening end of the resin molded portion;
It is arranged in a part of a gap existing between the embedded part and the resin molded part, and has a seal part for sealing the gap,
The seal portion is a terminal block comprising 100 parts by mass of a halogen-containing rubber and 1 part by mass or more of an anti-aging agent.

According to another aspect of the present invention, there is provided a plate integrally including a housing having a resin molded portion, an embedded portion embedded in the resin molded portion, and a connection portion protruding outward from an opening end of the resin molded portion. A method of manufacturing a terminal block having a shaped bus bar and a seal portion disposed in a part of a gap existing between the embedded portion and the resin molded portion and sealing the gap,
A step of preparing an adhesive formed by mixing 100 parts by mass of an uncrosslinked halogen-containing rubber, 1 part by mass or more of an anti-aging agent, and a solvent;
Applying the adhesive to the buried portion of the bus bar;
Forming the resin molded part by insert molding, crosslinking the halogen-containing rubber, and forming the seal part in the gap by heating the adhesive. It is in.

  The terminal block has a seal portion that is disposed in a part of a gap existing between the embedded portion and the resin molded portion and seals the gap. And the said seal | sticker part contains a halogen containing rubber and anti-aging agent in the ratio of the said specific range. The halogen-containing rubber adheres firmly to the resin molded part and can also adhere firmly to the buried part of the bus bar due to the presence of halogen atoms. Therefore, the gap can be sealed in a liquid-tight manner.

  Moreover, since the progress of heat aging becomes slow by the said anti-aging agent, the said seal | sticker part is suppressed softening. Therefore, the said terminal block can suppress the leakage of a seal part over a long period compared with the case where it does not have an anti-aging agent.

  Moreover, in the manufacturing method of the said terminal block, the adhesive agent which mixes uncrosslinked halogen-containing rubber, anti-aging agent, and a solvent is used. Therefore, by adjusting the amount of the solvent, the viscosity of the adhesive can be adjusted so as to have a property suitable for application. And the said adhesive agent can be apply | coated on the said bus bar seamlessly by using the said adhesive agent which adjusted the viscosity. As a result, it is easy to liquid-tightly seal the gap with the seal portion formed by heating the adhesive.

  As described above, the terminal block can seal the gap in a liquid-tight manner and can suppress leakage of the seal portion over a long period of time. Therefore, the terminal block has excellent performance. Moreover, the said terminal block can be easily produced by using the said manufacturing method.

The front view of the terminal block in an Example. The top view of the terminal block in an Example. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. Sectional drawing which expanded the seal | sticker part vicinity in FIG.

  In the terminal block, a thermoplastic resin such as an aromatic nylon-based resin reinforced with glass fiber or a polybutylene terephthalate-based resin reinforced with glass fiber is used for the resin molding portion. These resins satisfy the characteristics required for the terminal block such as heat resistance and insulation, and have good adhesion to the seal portion. Therefore, the performance of the terminal block can be further improved.

  Examples of the halogen-containing rubber contained in the seal portion include epichlorohydrin rubber (CO), epichlorohydrin-ethylene oxide copolymer (ECO), chlorosulfonated polyethylene (CSM), chloroprene rubber (CR), and acrylic acid. An ester-2-chloroethyl vinyl ether copolymer (ACM) or the like can be used. From the viewpoint of adhesive strength with the bus bar and heat resistance, it is preferable to use epichlorohydrin rubber as the halogen-containing rubber.

  As the anti-aging agent, conventionally known anti-aging agents can be used, and one or more compounds selected from the group consisting of ketone-amine condensates, aromatic amines and organic thioates are used. Is preferred.

  Examples of the ketone-amine condensate include 2,2,4-trimethyl-1,2-dihydroquinoline (TMDQ), 6-ethoxy-2,2,4-trimethyl-1,2 dihydroquinoline (ETMDQ), and acetone. -Diphenylamine condensate (ADPAL) etc. can be used. Examples of aromatic amines include N-isopropyl-N′-phenyl-p-phenylenediamine (IPPD), N-1,3-dimethylbutyl-N′-phenyl-p-phenylenediamine (6PPD), and Paraphenylenediamines such as N, N′-di-2-naphthyl-p-phenylenediamine (DNPD), octylated diphenylamine (ODPA), styrenated diphenylamine (SDPA) and 4,4′-dicumyldiphenylamine (CD) Diphenylamines such as can be used. Moreover, as organic thioacid salts, for example, dithiocarbamate such as nickel dibutyldithiocarbamate (NiDBC) can be used.

  As the content of the anti-aging agent increases, the effect of suppressing softening of the seal portion increases, and leakage of the seal portion can be suppressed over a longer period. From the viewpoint of suppressing leakage of the seal portion from the terminal block, the content of the antioxidant is 1 part by mass or more with respect to 100 parts by mass of the halogen-containing rubber. Thereby, the leakage of the seal part from the terminal block can be suppressed for a long time, and the required performance can be sufficiently satisfied. When the content of the anti-aging agent is less than 1 part by mass, the softening of the seal part proceeds quickly, so that the period until the seal part leaks from the terminal block becomes shorter.

  Moreover, it is more preferable that a seal part contains 1-5 mass parts anti-aging agent with respect to 100 mass parts halogen-containing rubber. In this case, the effect of suppressing the softening of the seal portion described above can be sufficiently obtained, and a state where the adhesion between the seal portion and the resin molding portion and the adhesion between the seal portion and the embedded portion is high is maintained for a long time. Can be maintained across. As a result, the space between the embedded portion and the resin molded portion can be liquid-tightly sealed for a longer period.

  As described above, since the terminal block has excellent performance, it is possible to liquid-tightly seal between the embedded portion and the resin molded portion even under severe use conditions, and to keep the sealed state for a long time. Can be maintained. Therefore, the said terminal block can be used suitably as a terminal block for connecting the wire harness for motor vehicles from which the outstanding performance was requested | required compared with the products for general consumers.

  Next, a method for manufacturing the terminal block will be described. The adhesive is prepared by mixing 100 parts by mass of an uncrosslinked halogen-containing rubber, 1 part by mass or more of an anti-aging agent and a solvent. Thus, by using an uncrosslinked halogen-containing rubber, mixing with a solvent can be easily performed, and as a result, a uniformly mixed adhesive can be easily obtained. Various solvents can be used as long as they can be uniformly mixed with a halogen-containing rubber or the like.

  Moreover, you may mix the crosslinking agent which bridge | crosslinks a halogen-containing rubber as needed with an adhesive agent. In the case where the halogen-containing rubber has self-crosslinking property, it is possible to adopt a configuration in which a crosslinking agent is not mixed. Moreover, you may mix | blend the additive generally used for rubber | gum, such as a filler and a lubricant, with an adhesive agent further.

  The adhesive configured as described above causes the halogen-containing rubber to be crosslinked at the same time as the solvent volatilizes due to heat and pressure received during insert molding. Thereby, a seal part is formed. Further, since the crosslinking reaction of the halogen-containing rubber proceeds in a state where both the resin molded portion and the bus bar are in contact, the seal portion is firmly bonded to each of the bus bar and the resin molded portion.

(Example)
Examples of the terminal block will be described with reference to FIGS. As shown in FIGS. 1 to 4, the terminal block 1 includes a housing 2 having a resin molded portion 21, a plate-like bus bar 3, and a seal portion 4. As shown in FIG. 3, the bus bar 3 is integrally provided with an embedded portion 32 embedded in the resin molded portion 21 and a connection portion 31 protruding outward from the opening end 211 of the resin molded portion 21. As shown in FIGS. 3 and 4, the seal portion 4 is disposed in a part of the gap 5 existing between the embedded portion 32 and the resin molding portion 21 and seals the gap 5. Moreover, the seal | sticker part 4 contains 100 mass parts halogen containing rubber and 1 mass part anti-aging agent so that it may mention later.

  As shown in FIGS. 1 to 4, the housing 2 of the terminal block 1 has a substantially flat plate shape, and a resin molding portion 21 is provided at the center thereof. Further, a plurality of bus bars 3 are disposed through the resin molding portion 21. The plurality of bus bars 3 are arranged in the width direction of the embedded portion 32. The bus bar 3 is arranged so that the longitudinal direction of the embedded portion 32 faces the thickness direction of the housing 2. In the following, the arrangement direction of the bus bars 3 is referred to as “lateral direction Y”. The longitudinal direction of the embedded portion 32 is referred to as “height direction Z”, and the thickness direction of the embedded portion 32 is referred to as “vertical direction X”.

  As shown in FIG.1 and FIG.2, the housing 2 has the resin molding part 21 which consists of thermoplastic resins. The resin molding part 21 has the flow-path wall part 212 which covers the embedding part 32 of the bus-bar 3, as shown in FIGS. The flow path wall portion 212 covers the flow path 51 of the seal portion 4, which is a region from the opening end 211 in the gap 5 to the seal portion 4, from four directions in the vertical direction X and the horizontal direction Y. In addition, the resin molding part 21 of this example is formed from the aromatic nylon resin reinforced with glass fiber.

  Moreover, in this example, the thickness dimension d (refer FIG. 4) of the flow-path wall part 212 in the thickness direction (vertical direction X) of the embedment part 32 is 3 mm. In this way, by setting the thickness dimension d to 3 mm or less, deformation due to thermal expansion when the terminal block 1 is heated can be reduced, and consequently, the gap 5 is prevented from being excessively widened in the vertical direction X. it can. As a result, in a state where the terminal block 1 is heated, it is possible to prevent the resistance when the seal portion 4 flows through the flow path 51 from being reduced, and leakage of the seal portion 4 can be suppressed for a longer period. In addition, from the same viewpoint, it is more preferable that the thickness dimension d of the flow path wall portion 212 in the thickness direction (vertical direction X) of the embedded portion 32 is 2 mm or less.

  The bus bar 3 is composed of a tin-plated copper plate and, as shown in FIGS. 1 to 3, penetrates the resin molding portion 21 and is fixed to the resin molding portion 21 by insert molding. The bus bar 3 of this example has a rectangular shape in which a cross section perpendicular to the longitudinal direction has a width of 12.5 mm and a thickness of 2.5 mm.

  As shown in FIG. 3, the bus bar 3 has connection portions 31 at both ends of an embedded portion 32 embedded in the resin molding portion 21. Each connecting portion 31 has a fastening hole 311 and a fastening nut 312 for fastening a wire harness or the like.

  The seal part 4 is provided in a part of the gap 5 and seals between the embedded part 32 and the resin molding part 21 in a liquid-tight manner. In this example, epichlorohydrin rubber (manufactured by Daiso Corporation, “Epichromer (registered trademark) H”) is used as the halogen-containing rubber contained in the seal portion 4. Moreover, as an anti-aging agent, an anti-aging agent containing nickel dibutyldithiocarbamate (“NOCRACK (registered trademark) NBC” manufactured by Ouchi Shinsei Chemical Co., Ltd.) is used.

  The terminal block 1 of this example can be manufactured by the following manufacturing method. First, the process of preparing the adhesive agent which mixes 100 mass parts uncrosslinked halogen containing rubber, 1 mass part anti-aging agent, and a solvent is implemented. The detailed composition of the adhesive is as follows.

・ Halogen-containing rubber (Daiso Co., Ltd., product name “Epichromer (registered trademark) H”); 100 parts by mass. Stearic acid (Kao Co., Ltd., “Lunac (registered trademark) S-50V”); Parts / magnesium oxide (manufactured by Kamishima Chemical Co., Ltd., “CX150”); 3 parts by mass / crosslinking agent (manufactured by Kawaguchi Chemical Industry Co., Ltd., “Accel® 22-S”); 1 part by mass / ageing Inhibitor (Ouchi Shinsei Chemical Co., Ltd., “NOCRACK (registered trademark) NBC”); 1 part by mass / solvent; 210 parts by mass The solvent includes toluene, xylene, ethyl acetate and methyl ethyl ketone. Yes.

  Subsequently, the process of apply | coating an adhesive agent to the part used as the embedding part 32 in the bus bar 3 prepared separately is implemented. In this example, the thickness of the adhesive at the time of application was in the range of 0.02 to 0.3 mm. Moreover, the process which air-drys an adhesive agent after application | coating was implemented.

  Thereafter, a step of forming the resin molding portion 21 by insert molding and crosslinking the halogen-containing rubber to form the seal portion 4 formed by heating the adhesive in the gap 5 is performed. By performing the insert molding, the resin heated to the molten state and the adhesive come into contact with each other, so that the adhesive is heated. Thereby, the solvent is volatilized and the halogen-containing rubber is crosslinked by the crosslinking agent. As a result, the seal portion 4 is formed in the gap 5 between the embedded portion 32 and the resin molded portion 21. Thus, the terminal block 1 can be obtained.

  Next, the function and effect of this example will be described. The terminal block 1 has a seal portion 4 that is disposed in a part of the gap 5 that exists between the embedded portion 32 and the resin molding portion 21 and seals the gap 5. And the seal | sticker part 4 contains a halogen containing rubber and anti-aging agent in the ratio of the said specific range. Therefore, the terminal block 1 can seal the gap 5 in a liquid-tight manner.

  Moreover, the progress of thermal aging is slowed by the anti-aging agent, and the sealing part 4 is suppressed from softening. Therefore, the terminal block 1 can suppress the leakage of the seal part 4 over a longer period of time compared to the case where the anti-aging agent is not included.

  Further, the terminal block 1 can be manufactured by the above-described manufacturing method. Therefore, the viscosity of the adhesive can be adjusted, and as a result, the adhesive can be applied onto the bus bar 3 without interruption. As a result, it is easy to liquid-tightly seal the gap 5 with the seal portion 4 formed by heating the adhesive.

  As described above, the terminal block 1 can seal the gap 5 in a liquid-tight manner and can suppress leakage of the seal portion 4 over a long period of time. Therefore, the terminal block 1 has excellent performance. Moreover, the terminal block 1 can be easily produced by using the said manufacturing method.

(Experimental example 1)
This example is an experimental example in which the terminal block 1 in which the content of the anti-aging agent was variously changed was produced and the performance was evaluated. The terminal block 1 (test body 1 to test body 5) of this example uses the five types of adhesives (adhesive A to adhesive E) in which the components are mixed at the ratios shown in Table 1, and is the same as in Example 1. It was produced by the method. In addition, the test body 5 was produced using the adhesive agent E which does not contain an anti-aging agent for the comparison with the test bodies 1 to 4. The following evaluation was performed using these five types of adhesives and test specimens.

  First, the elongation and shear bond strength of the adhesive after the heat aging treatment heated at 150 ° C. for 1200 hours were measured for each of adhesive A to adhesive E. The measurement method will be described below.

<Elongation of adhesive>
After forming the adhesive into a sheet, the halogen-containing rubber was crosslinked by heating at 150 ° C. for 30 minutes. Then, the heat aging process mentioned above was performed to the obtained sheet-like adhesive agent. And the tension test was done using the adhesive agent after heat aging treatment, and elongation was measured. The results are shown in Table 1.

<Shear bond strength>
A test plate having a shape defined in JIS K 6850 was prepared, in which a tin-plated copper plate and a glass plate reinforced resin plate made of aromatic nylon resin overlapped, and an adhesive was provided in the overlapping portion. . In addition, the preparation procedure of the test piece was based on the manufacturing method of the terminal block 1 mentioned above. That is, first, an adhesive was applied to a tin-plated copper plate with a thickness of 0.03 to 0.2 mm, and then the adhesive was dried. Next, a resin plate was formed by insert molding so as to overlap the adhesive. And after performing the heat aging process mentioned above to the obtained test piece, the tension test was done according to the method prescribed | regulated to JISK6850, and the shear bond strength of the adhesive agent was measured. The results are shown in Table 1.

  Next, for the five types of terminal blocks 1 (test body 1 to test body 5) produced using the adhesive A to the adhesive E, the evaluation of the presence or absence of leakage of the seal portion 4 and the adhesion of the seal portion 4 are performed. A leak test was conducted to evaluate. The evaluation method will be described below.

<Evaluation of presence or absence of leakage of seal part 4>
The terminal block 1 was fixed so that the longitudinal direction of the bus bar 3 was parallel to the vertical direction. In this state, the heat aging treatment described above was applied to the terminal block 1, and the presence or absence of leakage of the seal portion 4 after the heat aging treatment was visually observed. The results are shown in Table 2.

<Leak test>
Compressed air having a pressure of 100 kPa was introduced into the flow path 51 from one open end 211a (see FIG. 3) in the resin molding portion 21 of the terminal block 1 that had been subjected to heat aging treatment in advance. And the presence or absence of the leakage of the compressed air from the other opening end 211b was determined. The results are shown in Table 2.

  As is known from Tables 1 and 2, since the test body 1 to the test body 3 contain 1 part by mass or more of the anti-aging agent, the seal part 4 did not leak after the heat aging treatment.

  Moreover, the test body 1 and the test body 2 did not leak compressed air from the other opening end 211b in the leak test, and the seal portion 4 showed excellent adhesion. On the other hand, in the test body 3 in which the content of the anti-aging agent is 10 parts by mass, the compressed air leaks from the other opening end 211b in the leak test, and the adhesion of the seal part 4 compared to the test body 1 and the test body 2 Was slightly inferior. As shown in Table 1, the elongation and shear bond strength of the adhesive C after the heat aging treatment are lower than those of the adhesive A and the adhesive B, and the seal part 4 is peeled off from the resin molded part 21 and the bus bar 3. It is thought that it is easy to do.

(Experimental example 2)
In this example, the anti-aging agent contained in the seal portion 4 is 2,2,4-trimethyl-1,2-dihydroquinoline (Ouchi Shinsei Chemical Co., Ltd., “NOCRACK (registered trademark) 224”). A terminal block 1 (test bodies 11 to 15) was produced in the same manner as in Experimental Example 1 except that the performance was evaluated.

  Table 3 shows the composition of the adhesive (adhesive F to adhesive J) used in this example. Table 3 shows the measurement results of the elongation and shear bond strength of the adhesives F to J after the heat aging treatment.

Moreover, about 5 types of terminal blocks 1 (test body 11-test body 15) produced using the adhesive F-adhesive J, the evaluation result of the presence or absence of the leakage of the seal part 4 after implementing heat aging treatment Table 4 shows the results of the leak test.

  As shown in Tables 3 and 4, since the test bodies 11 to 13 contained 1 part by mass or more of the anti-aging agent, the seal part 4 did not leak after the heat aging treatment.

  Moreover, the test body 11 and the test body 12 did not leak compressed air in the leak test, and the seal part 4 showed the outstanding adhesiveness. On the other hand, the test body 13 having an anti-aging content of 10 parts by mass leaks compressed air in the leak test, resulting in slightly inferior adhesion of the seal part 4 to the test body 11 and the test body 12. It was. As shown in Table 3, the elongation and shear bond strength of the adhesive H after the heat aging treatment are lower than those of the adhesive F and the adhesive G, and the seal part 4 is peeled off from the resin molded part 21 and the bus bar 3. It is thought that it is easy to do.

(Experimental example 3)
In this example, the anti-aging agent contained in the seal portion 4 is N, N′-di-2-naphthyl-p-phenylenediamine (manufactured by Ouchi Shinsei Chemical Co., Ltd., “NOCRACK (registered trademark) White”). A terminal block 1 (test bodies 21 to 25) was prepared in the same manner as in Experimental Example 1 except that the performance was evaluated.

  Table 5 shows the compositions of the adhesives (adhesive K to adhesive P) used in this example. Table 5 shows the measurement results of the elongation and shear bond strength of the adhesives K to P after the heat aging treatment.

Moreover, about five types of terminal blocks 1 (test body 21-test body 25) produced using the adhesive K-adhesive P, the evaluation result of the presence or absence of the leakage of the seal part 4 after implementing heat aging treatment Table 6 shows the results of the leak test.

  As shown in Table 5 and Table 6, since the test bodies 21 to 23 contained 1 part by mass or more of the anti-aging agent, the seal part 4 did not leak after the heat aging treatment.

  Moreover, the test body 21 and the test body 22 did not leak compressed air in the leak test, and the seal part 4 showed the outstanding adhesiveness. On the other hand, the test body 23 having an anti-aging content of 10 parts by mass leaks compressed air in the leak test, resulting in slightly inferior adhesion of the seal part 4 to the test body 21 and the test body 22. It was. As shown in Table 5, the elongation and shear bond strength of the adhesive M after the heat aging treatment are lower than those of the adhesive K and the adhesive L, and the seal part 4 is peeled off from the resin molded part 21 and the bus bar 3. It is thought that it is easy to do.

  As is known from Experimental Example 1 to Experimental Example 3 above, the seal part 4 contains 1 part by mass or more of anti-aging agent with respect to 100 parts by mass of the halogen-containing rubber, thereby suppressing softening due to heat aging treatment. Thus, leakage of the seal portion 4 can be suppressed over a long period of time. Moreover, by making content of an anti-aging agent in the range of 1-5 mass parts, the adhesiveness of the seal part 4 and the resin molding part 21 and the adhesiveness of the seal part 4 and the embedded part 32 are high. It can be maintained for a long time. As a result, the resin molded portion 21 and the embedded portion 32 can be liquid-tightly sealed for a longer period.

DESCRIPTION OF SYMBOLS 1 Terminal block 2 Housing 21 Resin molding part 211 Open end 3 Bus bar 31 Connection part 32 Buried part 4 Seal part 5 Crevice

Claims (9)

A housing having a resin molded portion;
A plate-like bus bar integrally provided with an embedded portion embedded in the resin molded portion and a connecting portion protruding outward from an opening end of the resin molded portion;
It is arranged in a part of a gap existing between the embedded part and the resin molded part, and has a seal part for sealing the gap,
The terminal block characterized in that the seal part contains 100 parts by mass of a halogen-containing rubber and 1 part by mass or more of an anti-aging agent.   The terminal block according to claim 1, wherein the halogen-containing rubber is epichlorohydrin rubber.   The said anti-aging agent is 1 type, or 2 or more types of compounds chosen from the group which consists of a ketone-amine condensate, aromatic amines, and organic thioacid salts, The Claim 1 or 2 characterized by the above-mentioned. Terminal block.   The terminal block according to any one of claims 1 to 3, wherein the seal part contains 100 parts by mass of the halogen-containing rubber and 1 to 5 parts by mass of the anti-aging agent.   It is a terminal block for connecting the wire harness for motor vehicles, The terminal block of any one of Claims 1-4 characterized by the above-mentioned. A housing having a resin molded portion, a plate-shaped bus bar integrally provided with an embedded portion embedded in the resin molded portion and a connection portion protruding outward from an opening end of the resin molded portion, the embedded portion, and the above A method of manufacturing a terminal block, which is disposed in a part of a gap existing between the resin molded portion and has a seal portion for sealing the gap,
A step of preparing an adhesive formed by mixing 100 parts by mass of an uncrosslinked halogen-containing rubber, 1 part by mass or more of an anti-aging agent, and a solvent;
Applying the adhesive to the buried portion of the bus bar;
Forming the resin molded part by insert molding, crosslinking the halogen-containing rubber, and forming the seal part in the gap by heating the adhesive. .   The method for manufacturing a terminal block according to claim 6, wherein the halogen-containing rubber is epichlorohydrin rubber.   The anti-aging agent is one or two or more compounds selected from the group consisting of ketone-amine condensates, aromatic amines and organic thioates. Manufacturing method of terminal block.   9. The terminal block according to claim 6, wherein the adhesive contains 100 parts by mass of the halogen-containing rubber and 1 to 5 parts by mass of the anti-aging agent. Production method.

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