connector

Abstract

A connector (1) includes a plurality of terminals (10), a first member (20) made of a first resin to cover a part of a surface of each of the plurality of terminals (10), and a second member (30) made of a second resin to cover a part of a surface of each of the plurality of terminals (10) and a surface of the first member (20) on a side opposite to each of the terminals (10). The plurality of terminals (10) protrude to be exposed from a surface of the second member (30). A breaking energy in a transverse direction of the first resin is 2 J or more. A comparative tracking index of the second resin is 400 V or more.

Description

Technical Field

[0001] This invention relates to a connector. Background Technology

[0002] An electrical device, including a solenoid, is housed within the transmission of an automatic transmission along with automatic transmission fluid (ATF). The electrical device is electrically connected to external control units of the transmission via a connector located at an opening in the transmission. Such a connector needs to prevent ATF leakage from the transmission through the connector terminals, or to prevent moisture from the outside of the transmission from entering the transmission.

[0003] However, metal terminals typically have poor adhesion to resin housings, and liquids may leak or enter through the boundary between the metal terminals and the resin housing. Therefore, it is important to prevent the formation of minute gaps at the boundary between the resin and the metal. Patent document JP3467471B discloses a method for manufacturing a resin composite molded part to prevent such gaps. This method involves pre-chemically etching the surface of a metal part and inserting the metal part into a metal mold of an injection molding machine to inject and mold a specific thermoplastic resin. Summary of the Invention

[0004] Traditional techniques aim to prevent delamination of the molded part at the metal-resin boundary during the cooling process or in the operating environment. However, the metal and resin have different coefficients of linear expansion, and because the metal does not follow the resin as it expands or contracts due to temperature fluctuations in the operating environment, cracks may form in the resin.

[0005] In addition to sealing, small connector size is also required. However, simply reducing the size of the connector reduces the distance between the terminals, which may impede insulation between the terminals.

[0006] To address the conventional problems described above, the present invention provides a connector with high sealing performance and reduced size.

[0007] A connector according to one aspect of the present invention includes: a plurality of terminals; a first component made of a first resin to cover a portion of the surface of each of the plurality of terminals; and a second component made of a second resin to cover a portion of the surface of each of the plurality of terminals and a surface of the first component opposite to the respective terminals. The plurality of terminals protrude to expose themselves from the surface of the second component. The first resin has a transverse breaking energy of 2 J or more. The second resin has a tracking index of 400 V or more.

[0008] According to the present invention, it is possible to provide a connector with high sealing performance and reduced size. Attached Figure Description

[0009] Figure 1 This is a perspective view showing an example of a connector according to this embodiment.

[0010] Figure 2 It is along Figure 1 The cross-sectional view taken from line II-II.

[0011] Figure 3 It is along Figure 2 The cross-sectional view taken from line III-III.

[0012] Figure 4 It is along Figure 3 Cross-sectional view taken from the centerline IV-IV.

[0013] Figure 5 This is a schematic view of a test piece used in a crack initiation test.

[0014] Figure 6 This is a view showing an example of a situation where cracks have formed. Detailed Implementation

[0015] The connector according to this embodiment is described in detail below with reference to the accompanying drawings. The dimensions of the components in the drawings are enlarged for illustrative purposes and are not necessarily drawn to scale.

[0016] Figure 1 This is a perspective view showing an example of connector 1 according to this embodiment. Figure 2 It is along Figure 1 The cross-sectional view taken from line II-II. Figure 3 It is along Figure 2 The cross-sectional view taken from line III-III. Figure 4 It is along Figure 3 A cross-sectional view taken along centerline IV-IV. In the attached figure, the connection direction of the connector connected to terminal 10 (the length direction of terminal 10) is defined as the X direction, the direction of the short side of terminal 10 is defined as the Y direction, and the thickness direction of terminal 10 is defined as the Z direction. The X, Y, and Z directions are perpendicular to each other. Figures 1 to 4 As shown, connector 1 includes multiple terminals 10, a first component 20, and a second component 30.

[0017] The terminals 10 are arranged at intervals in the arrangement direction. Although this embodiment shows a connector 1 including three terminals 10, the number of terminals 10 can be appropriately determined. Each terminal 10 protrudes to be exposed from the surface of the second component 30. The portion of each terminal 10 exposed in the external space is electrically connected to a corresponding mating terminal (not shown). The two ends of each terminal 10 of the connector 1 can be connected to two different mating terminals.

[0018] Each terminal 10 has a rectangular column shape, with its minor axis located in a direction parallel to the arrangement direction (Y direction) of the terminals 10, and its major axis located in a direction perpendicular to the arrangement direction (X direction). The shape of each terminal 10 is not limited to the shape shown in the figure, and can be any shape such as a cylinder. Each terminal 10 may be provided with a stepped portion. Each terminal 10 may have the same shape, or may have different shapes.

[0019] Each terminal 10 is made of a conductive material. The material used for each terminal 10 may include at least one metal selected from the group consisting of pure copper, copper alloys, pure aluminum, aluminum alloys, and stainless steel. The surface of each terminal 10 may, but does not necessarily, undergo electroplating.

[0020] The surfaces of each terminal 10 may be provided with protrusions and recesses to improve adhesion to the first component 20 or the second component 30. The protrusions and recesses can be formed by, for example, chemical etching or physical etching. Examples of etching include sandblasting, chemical treatment, and laser treatment. The protrusions and recesses may be formed on the plated surfaces of each terminal 10. Each terminal 10 may be bonded to the first component 20 or the second component 30 by an adhesive.

[0021] The first component 20 covers a portion of the surface of each terminal 10. In other words, the remaining portion of each terminal 10 is exposed to the external space. The first component 20 may cover at least a portion of the outer peripheral surface of each terminal 10 in the short axis direction, or it may cover the entire periphery of each terminal 10.

[0022] The connector 1 may include a plurality of first components 20 that are separate from each other, or it may include a single continuous first component 20. When the connector 1 includes a plurality of first components 20, each first component 20 may cover the surface of the corresponding terminal 10. When the connector 1 includes a single continuous first component 20, the first component 20 may cover each surface of the terminal 10.

[0023] The tensile strength of the first resin in a direction orthogonal to the length direction (X direction) of each terminal 10 (Y or Z direction) is preferably 50 MPa or more, and more preferably 60 MPa or more. The length direction of each terminal 10 generally corresponds to the machine direction (MD). The direction perpendicular to the length direction of each terminal 10 generally corresponds to the transverse direction (TD). When the tensile strength of the first resin in the TD is high, cracks or peeling around each terminal 10 can be avoided or reduced.

[0024] The first component 20 is made of a first resin. The first resin has a fracture energy of two joules (J) or more on the fracture surface TD. The first resin, with a fracture energy of 2J or more on the fracture surface TD, combines rigidity and flexibility. Therefore, if the first resin or the second resin expands or contracts during the resin curing period during molding or due to temperature fluctuations after molding, the first resin absorbs a high amount of energy until fracture. This prevents the first component 20 from peeling off from each terminal 10 or prevents the generation of cracks in the first component 20. Since leakage or entry of liquid through the boundary between each terminal 10 and the first component 20 or through cracks can be prevented, a connector 1 with high sealing performance can be obtained. The fracture energy on the fracture surface TD is more preferably 3J or more, and even more preferably 4J or more. The first resin may have a higher fracture energy on the fracture surface TD than the second resin.

[0025] The first component 20 covering each terminal 10 preferably has the following characteristics: it is able to avoid cracking when the processing cycle of cooling the first component 20 at -40°C for 30 minutes and then heating it at 150°C for 30 minutes is repeated 1000 times. When the first component 20 does not crack under such conditions, the connector 1 can maintain its sealing performance in harsh environments such as vehicle environments where temperatures fluctuate repeatedly between high and low temperatures. Therefore, this embodiment can provide a connector 1 with high reliability.

[0026] The first resin includes, for example, a thermoplastic resin. The first resin preferably includes at least one of engineering plastics and super engineering plastics. Engineering plastics may include at least one resin selected from the group consisting of polybutylene terephthalate (PBT), polyamide 66 (PA66), and polyamide 6 (PA6). Super engineering plastics may include at least one resin selected from the group consisting of liquid crystal polymers (LCP), polyphenylene sulfide (PPS), aramid (PA6T), and syndiotactic polystyrene (SPS). The first resin preferably includes at least one of polyphenylene sulfide (PPS) and polybutylene terephthalate (PBT), which has small dimensional changes due to water absorption and a small difference in the coefficient of linear expansion between MD and TD.

[0027] The first resin may contain fillers to have various types of functions. The first resin may contain at least one filler selected from the group consisting of glass fibers, carbon fibers, and aramid fibers. The first resin containing such fillers has a small coefficient of linear expansion, thereby reducing the difference in coefficients of linear expansion between the first resin and each terminal 10. This reduces the effects of thermal expansion and contraction on the resin.

[0028] The second component 30 covers a portion of the surface of each terminal 10 and the surface of the first component 20 on the opposite side of each terminal 10. A portion of the second component 30 contacts each terminal 10 via the first component 20, and other portions are in direct contact with each terminal 10. In addition to covering each terminal 10, the second component 30 also covers the entire periphery of the first component 20, thus isolating the first component 20 from the external space via the second component 30. That is, the first component 20 is not exposed to the external space.

[0029] Each terminal 10 protrudes to be exposed from the surface of the second component 30. The second component 30 may include a terminal holding portion 31 and a flange 32. The terminal holding portions 31 and the flange 32 are integrally integrated with each other. Each terminal holding portion 31 has a rectangular cylindrical shape and covers the periphery of each terminal 10. The terminal holding portion 31 is provided with a rib 33 protruding from its surface. The flange 32 is provided on the periphery of each terminal holding portion 31 and extends into a flat plate shape extending from each terminal holding portion 31 in the Y and Z directions.

[0030] The second component 30 is made of a second resin. The second resin has a tracking index of 400V or higher. When the tracking index is 400V or higher, the second resin can prevent electrical breakdown between multiple terminals 10, thus helping to shorten the distance between the terminals 10. This reduces the area where the connector 1 holds each terminal 10, thereby helping to reduce the size of the connector 1. The tracking index of the second resin can be 600V or higher. The tracking index of the second resin is preferably as large as possible. For example, the tracking index can be 10000V, but the upper limit is not limited to a specific value. The second resin can have a larger tracking index than the first resin.

[0031] The tracking index can be measured according to JIS C2134:2007 (IEC 60112:2003). The tracking index represents the maximum voltage at which the resin can withstand 50 drops of the test solution without causing tracking failure or a sustained flame. The term "tracking failure" refers to electrical breakdown caused by tracking between conductive parts. The term "tracking" refers to the gradual formation of a conductive path due to the combined effects of electrolysis and electrolytic contamination on or within a solid insulating material, or both.

[0032] According to UL standards, the tracking index is defined as follows: above 600V, PLC0; above 400V and below 600V, PLC1; above 250V and below 400V, PLC2; above 175V and below 250V, PLC3; above 100V and below 175V, PLC4; and below 100V, PLC5.

[0033] The flexural strength of the second resin after being impregnated in oil at 150°C for 1000 hours is preferably 85% or more relative to the flexural strength of the unimpregnated second resin. When the second resin has a flexural strength of 85% or more, it allows connector 1 to be used in parts that come into contact with oil, such as hydraulic fluid in a vehicle. The oil to be used is, for example, automatic transmission fluid. Automatic transmission fluid is, for example, ACDelco DEXRON (registered trademark) VI, which is available from General Motors Company. The flexural strength can be measured at room temperature (approximately 23°C) at a test speed of 10 mm / min according to ASTM D790.

[0034] The second resin comprises, for example, a thermoplastic resin. The second resin preferably comprises a super engineering plastic with high heat resistance and oil resistance. In particular, the second resin preferably comprises at least one resin selected from the group consisting of polyphenylene sulfide (PPS), syndiotactic polystyrene (SPS), polyamides (PA) including aramids (PA6T), and liquid crystal polymers (LCP). The second resin preferably comprises at least one of polyphenylene sulfide (PPS) and syndiotactic polystyrene (SPS) particularly possessing high heat resistance and oil resistance. The second resin may comprise a resin of the same type as the first resin, or it may comprise a resin of a different type than the first resin.

[0035] The second resin may contain fillers to perform various functions. The second resin may contain at least one filler selected from the group consisting of glass fibers, carbon fibers, and aramid fibers. The second resin containing such fillers has a small coefficient of linear expansion, thereby reducing the difference in coefficients of linear expansion between the second resin and each terminal 10. This reduces the impact of thermal expansion and contraction on the resin.

[0036] An adhesive can be applied to the boundary between the first component 20 and the second component 30, or the first component 20 and the second component 30 can be directly bonded to each other. The adhesive used can be of any type capable of bonding the first component 20 and the second component 30 together. A suitable method for directly bonding the first component 20 and the second component 30 can be determined, and for example, the first component 20 and the second component 30 can be bonded to each other by known welding methods such as two-color molding, vibration welding using ultrasound, laser welding, and friction stir welding (FSW). Prior to direct bonding, the first component 20 can undergo chemical or physical surface treatment.

[0037] The manufacturing process of connector 1 according to this embodiment is described below. The manufacturing method of connector 1 includes, for example, a first step and a second step. The first step is to form a first component 20 from a first resin to cover a portion of the surface of each terminal 10. The second step is to form a second component 30 from a second resin to cover a portion of the surface of each terminal 10 and the surface of the first component 20 on the opposite side to each terminal 10.

[0038] The surface of each terminal 10 may have an anchor structure, which is provided with protrusions and recesses patterned by laser processing at sub-millimeter depths and intervals. The anchor structure of each terminal 10 allows the first resin and the second resin to enter into the recesses on the surface of the terminal 10 and to tightly adhere the first component 20 and the second component 30 to each other, so that the connector 1 has high liquid resistance.

[0039] The first component 20 and the second component 30 can be formed, for example, by injection molding. The first component 20 and the second component 30 can be bonded together by two-color molding. Alternatively, the first component 20 can be surface-treated before forming the second component 30, followed by the step of bonding the first component 20 and the second component 30 together. Alternatively, an adhesive can be applied to the surface of the first component 20 to bond the first component 20 and the second component 30 together. Alternatively, the first component 20 and the second component 30 can be bonded together by known welding methods such as vibration welding using ultrasound and laser welding.

[0040] As described above, the connector 1 according to this embodiment includes a plurality of terminals 10 and a first component 20, the first component 20 being made of a first resin to cover a portion of the surface of each terminal 10. The connector 1 also includes a second component 30, the second component 30 being made of a second resin to cover a portion of the surface of each terminal 10 and the surface of the first component 20 on the opposite side to each terminal 10. Each terminal 10 protrudes to be exposed from the surface of the second component 30. The first resin has a breaking energy of 2J or more on a TD. The second resin has a tracking index of 400V or more.

[0041] A first component 20, made of a first resin, covers a portion of the surface of each terminal 10, wherein the first resin has a fracture energy of 2J or more. Because the first resin, with a fracture energy of 2J or more on the TD, combines strength and flexibility, it absorbs a high amount of energy until fracture if the first or second resin expands or contracts during resin curing during molding or due to temperature fluctuations after molding. This prevents the first component 20 from peeling off from the terminals 10 or prevents the formation of cracks in the first component 20. It also prevents liquid from leaking or entering through the boundary between the terminals 10 and the first component 20 or through cracks, thus providing a connector 1 with high sealing performance.

[0042] A second component 30, made of a second resin, covers a portion of the surface of each terminal 10 and the surface of the first component 20, and each terminal 10 protrudes to be exposed from the surface of the second component 30. The second resin, having a tracking index of 400V or higher, provides high insulation to each terminal 10, contributing to a shorter distance between them. Therefore, a connector 1 with a reduced size can be provided.

[0043] Since the first component 20 is made of the first resin and the second component 30 is made of the second resin, as described above, the connector 1 can also be integrally formed by two-color molding. This eliminates the need for O-rings or retainers made of acrylic resin, which are typically used in conventional connectors to ensure a seal. This also helps to further reduce the size of the connector 1.

[0044] As described above, this embodiment provides a connector 1 with high sealing performance and reduced size. The connector 1 according to this embodiment is applicable to hermetically sealed structures used in electronic devices, automotive / electrical components, transformer / coil power modules, and wiring harnesses for devices, relays, and sensors. The connector 1 according to this embodiment can be used not only in underfloor wiring harnesses or air conditioning wiring harnesses for vehicles such as automobiles, but also in engine wiring harnesses (such as engine connectors or engine terminal blocks) and transmission connectors with oil-cooled structures.

[0045] Example

[0046] The present embodiment is described in more detail below with reference to embodiments and comparative examples, but is not limited to the embodiments described below.

[0047] The embodiments and comparative examples use the following materials for the first resin and the second resin:

[0048] Polyphenylene sulfide (PPS): Torelina (registered trademark) A675GS1; PPS-I-(GF+MD)50, available from Toray Industries, Inc.

[0049] Polyphenylene sulfide (PPS): Torelina (registered trademark) A660EX; PPS-I-(GF+MD)65, available from Toray Industries, Inc.

[0050] Syndiotactic polystyrene (SPS): XAREC (registered trademark) C142; PS-ST-GF40, available from Idemitsu Kosan Co., Ltd., Japan.

[0051] Polybutylene terephthalate (PBT): DURANEX (registered trademark) 531HS; PBT-I-GF30, available from Polyplastics Co., Ltd.

[0052] [evaluate]

[0053] The evaluation of the first and second resins is as follows:

[0054] <Tension Test>

[0055] A sample of the first resin, 60 mm long, 20 mm wide, and 2 mm thick, was prepared, wherein the direction perpendicular to the flow direction during injection molding (TD) corresponds to the length direction. The tensile strength (MPa) on the TD at break was measured using a precision general-purpose tester, Autograph AG-1 (registered trademark), available from Shimadzu Corporation, at room temperature (approximately 23°C) and a speed of 10 mm / min. The tensile direction was set to be perpendicular to the fiber orientation.

[0056] Tensile fracture energy

[0057] Tensile tests were performed on the first and second resins in the same manner as described above, and the fracture energy was determined based on the SS curve, which represents the relationship between indicative stress (tensile strength) and strain (elongation). Specifically, the tensile fracture energy at TD was obtained from the area between the SS curve and the 0 MPa stress.

[0058] <Crack formation>

[0059] like Figure 5 As shown, the test piece 50 is prepared by insertion molding, such that one end of the terminal 51 is exposed and the periphery of the other end of the terminal 51 is covered by the first resin 52. The terminal 51 is made of SUS304, which has a coefficient of linear expansion of 17.3 × 10⁻⁶. -6 / ℃ and has a rectangular shape of 14mm × 14mm × 46mm. Although not shown, the four corners of terminal 51 are each cut into right-angled isosceles triangles of 0.1mm. Next, the test piece 50 is subjected to a cycle of cooling at -40℃ for 30 minutes and then heating at 150℃ for 30 minutes, and this cycle is repeated 1000 times. The test piece 50 is visually observed, and the condition is checked until the following occurs. Figure 6 The number of cycles for which crack 53 was generated was counted. Test piece 50 was visually inspected every 50 cycles to measure the number of cycles that generated crack 53.

[0060] <Compared to the tracking index>

[0061] The tracking index was measured according to JIS C2134:2007 (IEC 60112:2003). Specifically, test pieces were prepared by stacking 20 100mm × 100mm plates with a thickness of 3mm using a first resin and a second resin, respectively. Solution A was prepared as the measurement solution. Approximately 0.1% by mass of anhydrous ammonium chloride of analytical purity (≥99.8%) was dissolved in deionized water with a conductivity of less than 1 mS / m, resulting in a resistivity of 3.95 Ωm ± 0.05 Ωm at a temperature of 23°C ± 1°C. Platinum electrodes were then placed on the surface of the test pieces, and solution A was dropped between the platinum electrodes at predetermined time intervals while a voltage was applied between them. The measured tracking index was the maximum voltage at which five test pieces could withstand 50 drops of solution A without causing tracking damage.

[0062] <Flexural Strength>

[0063] Test pieces with a thickness of 1.6 mm and a diameter of 127 mm × 12.7 mm were prepared, made from a first resin and a second resin, respectively. Each test piece was immersed in Automatic Transmission Fluid (ATF) at 150°C for 1000 hours, and then removed from the ATF and wiped clean to allow them to stand until they returned to room temperature (approximately 23°C). The ATF used was ACDelco DEXRON (registered trademark) VI, available from General Motors. Each test piece was then placed in a fixture and subjected to a bending test according to ASTM D790. Bending strength was measured using a precision universal testing instrument, Autograph (registered trademark) AG-1, obtained from Shimadzu Corporation, at room temperature (approximately 23°C) and a bending speed of 10 mm / min. The bending test was repeated 5 times for both the ATF-impregnated and unimpregnated test pieces, and the average bending strength of each test piece was calculated. In addition, the flexural strength of the second resin impregnated with ATF was calculated relative to the flexural strength of the second resin not impregnated with ATF.

[0064] [Table 1]

[0065]

[0066] [Table 2]

[0067]

[0068] In Example 1, the first resin used was PPS A675GS1, and the second resin used was SPS C142. The first resin has a breaking energy of 2J or more on the TD (Dielectric Tear) and does not crack in the first component after more than 1000 cycles, and also has a tracking index of 400V or more. In Example 2, the first resin used was PPS A675GS1, and the second resin used was PPS A660EX. The first resin has a breaking energy of 2J or more on the TD (Dielectric Tear) and does not crack in the first component after more than 1000 cycles, and also has a tracking index of 400V or more. Example 2 also demonstrates good bonding between the first and second resins.

[0069] In Example 3, the first resin used was PBT 531HS, and the second resin used was SPS C142. The first resin has a breaking energy of 2J or more on the TD (Transient Voltage Regulator), and does not crack in the first component within 1000 cycles or more, and also has a tracking index of 400V or more. In Example 4, the first resin used was PBT 531HS, and the second resin used was PPS A660EX. The first resin has a breaking energy of 2J or more on the TD, and does not crack in the first component within 1000 cycles or more, and also has a tracking index of 400V or more.

[0070] In Examples 1 to 4, a connector was manufactured in which the terminals were covered by a first resin, and the first resin was further covered by a second resin. Crack formation was evaluated in the same manner as described above. As shown in the "First Material / Second Material" row in Table 1, no cracks were generated. In Examples 1 and 2, the "flexural strength of the second resin impregnated with ATF" was more than 85% of the "flexural strength of the second resin not impregnated with ATF," and the oil resistance (ATF) was also high. The evaluation also showed that when the tensile strength on the MD was 50 MPa or more, no cracks were generated in the first component after more than 1000 cycles in Examples 1 to 4.

[0071] In Comparative Example 1, both the first and second resins used were PPS A675GS1. The first resin had a breaking energy of 2J or more on the TD and a tensile strength of 50MPa or more on the MD, and no cracks were generated in the first component after more than 1000 cycles, while the tracking index was as low as 150V. In Comparative Example 2, both the first and second resins used were PPS A660EX. Although the tracking index was as high as 400V or more, the first resin had a breaking energy of less than 2J on the TD and a tensile strength of less than 50MPa on the MD, and cracks were generated in the first component after the 50th cycle. In Comparative Example 3, both the first and second resins used were SPS C142. Although the tracking index was as high as 400V or more, the first resin had a breaking energy of less than 2J on the TD and a tensile strength of less than 50MPa on the MD, and cracks were generated in the first component after the 200th cycle.

[0072] Evaluation results of the examples and comparative examples suggest that when the fracture energy on the TD of the first resin is 2J or more and the second resin has a tracking index of 400V or more, it is speculated that a connector with high sealing performance and reduced size can be obtained.

[0073] Although this embodiment has been described above with reference to various embodiments, it should be understood that this embodiment is not limited to the above embodiments, and various modifications can be made within the scope of this embodiment.

Claims

1. A connector, comprising: Multiple terminals; A first component, made of a first resin, is used to cover a portion of the surface of each of the plurality of terminals; as well as A second component, made of a second resin, covers a portion of the surface of each of the plurality of terminals and the surface of the first component on the opposite side to each terminal. The plurality of terminals protrude to be exposed from the surface of the second component. The transverse fracture energy of the first resin is 2J or more, and The second resin has a comparative tracking index of over 400V.

2. The connector according to claim 1, wherein, The comparative tracking index of the second resin is greater than that of the first resin.

3. The connector according to claim 1 or 2, wherein, The flexural strength of the second resin after being impregnated in oil at 150°C for 1000 hours is more than 85% of the flexural strength of the second resin not impregnated in oil.

4. The connector according to claim 1 or 2, wherein, The transverse fracture energy of the first resin is greater than that of the second resin.

5. The connector according to claim 1 or 2, wherein: The first resin comprises at least one of polyphenylene sulfide and polybutylene terephthalate; and The second resin comprises at least one resin selected from the group consisting of polyphenylene sulfide, syndiotactic polystyrene, polyamide and liquid crystal polymer.

6. The connector according to claim 1 or 2, wherein, The adhesive is applied to the boundary between the first component and the second component, or the first component and the second component are directly bonded to each other.

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