Connector

Abstract

To provide a connector which can suppress galvanic corrosion between terminals.SOLUTION: A connector comprises: a first tabular terminal 21 having a fitting hole 27; a second terminal 51; a relay terminal 30 provided between the first terminal 21 and the second terminal 51; and a bolt member 40 which fastens and fixes the first terminal 21, second terminal 51, and the relay terminal 30 to one another. The first terminal 21 and the second terminal 51 are made of different types of metal. The relay terminal 30 is made of metal whose ionization tendency is in the middle of those of the first terminal 21 and the second terminal 51. The first terminal 21 has an oxide film on the surface, of the first terminal 21, including an inner circumferential surface of the fitting hole 27. The relay terminal 30 has a press-in fixing part 32 which is pressed in and fixed to the fitting hole 27. The press-in fixing part 32 has: an insertion part 34 which is inserted into the fitting hole 27; and a protruding part 35 which protrudes from an outer circumferential surface of the insertion part 34 so as to scrape the oxide film on the inner circumferential surface of the fitting hole 27.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to connectors. [Background technology]

[0002] For example, Patent Document 1 describes a connector including a plate-shaped first terminal, a second terminal, and a bolt that fastens the first terminal and the second terminal together. The first terminal and the second terminal are electrically connected to each other by contacting each other through the fastening of the bolt. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-155204 Summary of the Invention [Problem to be solved by the invention]

[0004] In a connector such as that described above, if the first terminal and the second terminal are made of different metals, there is a risk that galvanic corrosion (bimetallic corrosion) will occur if water adheres to the contact point between the first terminal and the second terminal.

[0005] An object of the present disclosure is to provide a connector that can suppress galvanic corrosion between terminals. [Means for solving the problem]

[0006] The connector of the present disclosure comprises a plate-shaped first terminal having a mounting hole, a second terminal, a relay terminal provided between the first terminal and the second terminal, and a bolt member fastening the first terminal, the second terminal, and the relay terminal together, wherein the first terminal and the second terminal are formed of different metals, the relay terminal is formed of a metal whose ionization tendency is intermediate between that of the first terminal and the second terminal, the first terminal has an oxide coating on its surface including the inner surface of the mounting hole, and the relay terminal has a press-fit fixing portion that is press-fitted and fixed into the mounting hole, and the press-fit fixing portion has an insertion portion that is inserted into the mounting hole and a protrusion that protrudes from the outer surface of the insertion portion and scrapes off the oxide coating on the inner surface of the mounting hole. [Effects of the Invention]

[0007] According to the connector of the present disclosure, it is possible to suppress galvanic corrosion between terminals. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a connector according to one embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the connector according to the embodiment. [Figure 3] 3 is a cross-sectional view of the connector of the embodiment taken along line 3-3 of FIG. 1. FIG. [Figure 4] FIG. 4 is a plan view of the relay terminal in the same embodiment. [Figure 5] FIG. 5 is a perspective view of a relay terminal in the same embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The connector of the present disclosure comprises: [1] A device comprising: a plate-shaped first terminal having a mounting hole; a second terminal; a relay terminal provided between the first terminal and the second terminal; and a bolt member fastening the first terminal, the second terminal, and the relay terminal together; the first terminal and the second terminal are formed of different metals; the relay terminal is formed of a metal whose ionization tendency is intermediate between that of the first terminal and the second terminal; the first terminal has an oxide coating on its surface including the inner surface of the mounting hole; the relay terminal has a press-fit fixing portion press-fitted into the mounting hole; and the press-fit fixing portion has an insertion portion inserted into the mounting hole and a protrusion protruding from the outer surface of the insertion portion to scrape off the oxide coating on the inner surface of the mounting hole.

[0010] According to this configuration, the first terminal and the second terminal, which are made of different metals, are electrically connected via the relay terminal. The relay terminal is formed of a metal whose ionization tendency is intermediate between that of the first terminal and the second terminal. This makes it possible to suppress galvanic corrosion between the first terminal and the second terminal. Furthermore, the press-fit fixing portion of the relay terminal has an insertion portion that is inserted into the mounting hole and a protrusion that protrudes from the outer surface of the insertion portion and scrapes off the oxide film on the inner surface of the mounting hole. According to this configuration, by press-fitting the press-fit fixing portion into the mounting hole, the protrusion can remove part of the oxide film on the inner surface of the mounting hole. This reduces the contact resistance between the mounting hole and the press-fit fixing portion. Furthermore, since it is no longer necessary to remove the oxide film on the mounting hole before press-fitting the press-fit fixing portion into the mounting hole, the mounting process can be simplified.

[0011] [2] In the above [1], the connector may include an electric wire having a plate-shaped core wire and an insulating coating that covers the outer periphery of the core wire, the core wire having an exposed portion that is exposed from the insulating coating, and the first terminal may be formed integrally with the exposed portion.

[0012] According to this configuration, a part of the core wire can be configured as the first terminal, which contributes to reducing the number of parts. [3] In the above [2], the relay terminal may have a bolt insertion hole through which the bolt member is inserted, and the bolt insertion hole may have an elongated hole shape that is long along the length of the electric wire.

[0013] With this configuration, the bolt insertion hole of the relay terminal is elongated along the length of the electric wire, so the position of the bolt member inserted into the bolt insertion hole can be adjusted along the length of the electric wire. Therefore, even if the positions of the mounting hole and the relay terminal are shifted along the length of the electric wire due to thermal expansion of the electric wire or the like, the bolt member can be fastened by adjusting the position of the bolt member along the length.

[0014] [4] In any of the above [1] to [3], the relay terminal may have a bolt insertion hole through which the bolt member is inserted, and a locking protrusion that protrudes from the inner surface of the bolt insertion hole and locks onto the bolt member in the bolt axial direction, thereby preventing the bolt member from coming loose.

[0015] According to this configuration, the locking protrusion provided in the bolt insertion hole can prevent the bolt member from coming off the bolt insertion hole. [5] In any of the above [1] to [4], the relay terminal may have a contact surface that contacts the second terminal and a pressing surface that is pressed when the relay terminal is press-fitted into the mounting hole.

[0016] According to this configuration, the contact surface with the second terminal is not used as a surface to be pressed when the relay terminal is press-fitted into the mounting hole, and therefore the contact surface can be protected. [Details of the embodiments of the present disclosure] Specific examples of connectors according to the present disclosure are described below with reference to the drawings. For ease of explanation, some components may be exaggerated or simplified in the drawings. The dimensional proportions of the components may differ from one drawing to another. In this specification, "vertical" and "orthogonal" do not necessarily refer to strictly perpendicular or orthogonal configurations, but also include approximately perpendicular or orthogonal configurations within the scope of the functions and effects of the present embodiment. The term "cylindrical" as used herein does not only refer to a configuration having a continuous peripheral wall along the entire periphery, but also includes a configuration formed by combining multiple components and a configuration having a circumferential notch, such as a C-shape. The term "cylindrical" includes circular, elliptical, and polygonal shapes with pointed or rounded corners. The term "annular" as used herein may refer to any structure that forms a loop, a continuous shape without ends, or a generally loop-shaped structure with a gap, such as a C-shape. The term "annular" includes, but is not limited to, circular, elliptical, and polygonal shapes with pointed or rounded corners. In addition, the term "opposite" in this specification refers to surfaces or components facing each other, and includes not only cases where they are completely facing each other, but also cases where they are partially facing each other. Furthermore, in this specification, "opposite" includes both cases where a separate component is interposed between two components, and cases where nothing is interposed between the two components. Furthermore, terms such as "first" and "second" in this specification are used simply to distinguish between objects, and do not rank the objects. The present invention is not limited to these examples, but is defined by the claims, and all modifications within the meaning and scope of the claims are intended to be included.

[0017] (Configuration of Connector 10) As shown in FIG. 1, the connector 10 includes a first connector 11 and a second connector 12 that are connected to each other. The connector 10 electrically connects, for example, electrical devices for a vehicle. Examples of electrical devices for a vehicle include a high-voltage battery, an inverter, a motor, and a relay box. The first connector 11 is configured to be detachably attached to the second connector 12. The second connector 12 is attached to an attachment target, such as a case of an electrical device (not shown). In other words, the second connector 12 is, for example, an equipment connector.

[0018] (Configuration of first connector 11) 1 and 2, the first connector 11 includes electric wires 22 including first terminals 21, relay terminals 30, and bolt members 40. The first connector 11 is provided with one or more electric wires 22. Also, one or more relay terminals 30 and bolt members 40 are provided corresponding to the number of electric wires 22.

[0019] The electric wire 22 has a core wire 23 formed by a plate-shaped bus bar and an insulating coating 24 that covers the outer periphery of the core wire 23. The core wire 23 is a single-core wire made of, for example, a single metal material. The core wire 23 can be made of, for example, a copper-based or aluminum-based metal material. The core wire 23, which is a bus bar, has a flat shape that is thin in thickness in the direction along the axis L1 of the bolt member 40. The insulating coating 24 covers, for example, the outer periphery of the core wire 23 over the entire circumferential direction. The insulating coating 24 is made of, for example, an insulating resin material.

[0020] The length direction D1 of the electric wire 22 is perpendicular to the direction along the axis L1. The tip end of the core wire 23 in the length direction D1 is configured as an exposed portion 25 exposed from the insulating coating 24. That is, the core wire 23 has the exposed portion 25 exposed from the insulating coating 24 and a core wire body 26 covered by the insulating coating 24. The core wire 23 has a shape in which, for example, the exposed portion 25 and the core wire body 26 are located on the same plane.

[0021] The first terminal 21 of the first connector 11 is formed integrally with, for example, the tip end of the exposed portion 25 of the core wire 23. That is, the first terminal 21 is a part of the core wire 23. That is, the first terminal 21 is in the form of a plate with a thin thickness in the direction along the axis L1. An oxide coating is provided on the surface of the core wire 23. That is, an oxide coating is provided on the surface of the first terminal 21, which is a part of the core wire 23. The first terminal 21 has a mounting hole 27 that penetrates the first terminal 21 in its plate thickness direction (axis L1 direction). The mounting hole 27 has an elongated hole shape that is long along the length direction D1 of the electric wire 22. An oxide coating is provided on the inner peripheral surface of the mounting hole 27. A metal relay terminal 30 is attached to the mounting hole 27.

[0022] (Configuration of relay terminal 30) 2, 3, and 4, the relay terminal 30 includes a base 31, a press-fit fixing portion 32 protruding from the base 31, and a bolt insertion hole 33. The base 31 has, for example, a circular shape centered on the axis L1. When the first connector 11 is connected to the second connector 12, the base 31 of the relay terminal 30 is located between the first terminal 21 and a second terminal 51 (described later) in the direction of the axis L1.

[0023] The press-fit fixing portion 32 protrudes from the base 31 along the axis L1. The press-fit fixing portion 32 is formed to have a larger diameter than the press-fit fixing portion 32. The bolt insertion hole 33 passes through the base 31 and the press-fit fixing portion 32 along the axis L1. A bolt member 40 is inserted into the bolt insertion hole 33.

[0024] The press-fit fixing portion 32 is press-fitted and fixed into the mounting hole 27 of the first terminal 21. The press-fit fixing portion 32 has an insertion portion 34 inserted into the mounting hole 27 and multiple protrusions 35 protruding from the outer peripheral surface of the insertion portion 34. The outer diameter of the insertion portion 34 is smaller than the diameter of the mounting hole 27. The multiple protrusions 35 are provided at approximately equal intervals in the circumferential direction of the insertion portion 34. When the press-fit fixing portion 32 is press-fitted into the mounting hole 27, each protrusion 35 bites into the inner peripheral surface of the mounting hole 27, scraping away the oxide coating on the inner peripheral surface of the mounting hole 27. That is, a portion of the oxide coating on the inner peripheral surface of the mounting hole 27 is scraped away and removed by each protrusion 35. The oxide coating formed on the surface of the core wire 23 including the first terminal 21 becomes electrical resistance. Therefore, each protrusion 35 scrapes off the oxide film on the inner circumferential surface of the mounting hole 27 and bites into the inner circumferential surface of the mounting hole 27 , and serves as an electrical contact point with the first terminal 21 in the relay terminal 30 .

[0025] The bolt insertion hole 33 has a first portion 33a penetrating the base portion 31 and a second portion 33b penetrating the press-fit fixing portion 32. The first portion 33a and the second portion 33b are aligned along the axis L1 and communicate with each other. As shown in FIG. 5, the first portion 33a of the bolt insertion hole 33 has, for example, a circular shape centered on the axis L1. The second portion 33b of the bolt insertion hole 33 has a smaller diameter than the first portion 33a. The second portion 33b has an oblong hole shape that is long along the longitudinal direction D1 of the electric wire 22 (see FIGS. 2 and 4).

[0026] 3 and 5, a pressing surface 36 is formed in the bolt insertion hole 33 at a step portion where the first portion 33a transitions to the second portion 33b. At least a portion of the pressing surface 36 is perpendicular to the axis L1. The pressing surface 36 is pressed by a press-fitting jig (not shown) when the press-fit fixing portion 32 of the intermediate terminal 30 is press-fitted into the mounting hole 27.

[0027] The bolt insertion hole 33 has a locking protrusion 37 that protrudes from the inner peripheral surface of the bolt insertion hole 33. The locking protrusion 37 is provided in the middle of the bolt insertion hole 33 in the direction of the axis L1. The locking protrusion 37 is provided at the end of the first portion 33a of the bolt insertion hole 33 on the second portion 33b side in the direction of the axis L1. The locking protrusion 37 is also provided around the entire circumference of the first portion 33a.

[0028] The base 31 of the relay terminal 30 has a contact surface 38 that comes into contact with a second terminal 51 (described later). The contact surface 38 is formed on one end surface of the base 31 in the direction of the axis L1. The contact surface 38 has, for example, an annular shape centered on the axis L1. The contact surface 38 is also perpendicular to the axis L1. The contact surface 38 is plated with, for example, tin or the like.

[0029] (Configuration of bolt member 40) As shown in Fig. 3, the bolt member 40 includes, for example, a metal bolt body 41 and an insulating cap 42 made of synthetic resin. The bolt body 41 has a head 43 and a shank 44 extending from the head 43 along an axis L1. A thread 44a is formed on the outer periphery of the shank 44. The insulating cap 42 is attached to the bolt body 41 so as to cover the head 43 of the bolt body 41.

[0030] The shank 44 of the bolt member 40 is inserted into the bolt insertion hole 33 of the relay terminal 30 attached to the mounting hole 27. Here, when the length of the inner diameter of the locking protrusion 37 of the bolt insertion hole 33 in the direction along the longitudinal direction D1 of the electric wire 22 is defined as the major axis and the length in the direction perpendicular to the major axis is defined as the minor axis, the minor axis is set to be smaller than the diameter of the thread 44a of the bolt member 40. In other words, the locking protrusion 37 of the bolt insertion hole 33 locks onto the thread 44a of the shank 44 of the bolt member 40 in the direction of the axis L1, thereby preventing the bolt member 40 from coming off the bolt insertion hole 33.

[0031] (Configuration of second connector 12) As shown in FIGS. 1 and 3, the second connector 12 includes a metal second terminal 51 and a housing 52 that holds the second terminal 51. One or more second terminals 51 are provided corresponding to the number of electric wires 22 of the first connector 11. The second terminal 51 has a cylindrical shape that extends along the axis L1. The second terminal 51 is made of a different type of metal material from that of the core wire 23 including the first terminal 21. For example, a copper-based or aluminum-based metal material can be used for the second terminal 51.

[0032] The housing 52 is made of, for example, a synthetic resin. The housing 52 is, for example, molded onto the second terminal 51 so as to cover most of the second terminal 51. The second terminal 51 has an exposed surface 53 at its tip end surface in the direction of the axis L1. The exposed surface 53 is exposed to the outside of the housing 52. The exposed surface 53 has, for example, an annular shape centered on the axis L1. An internally threaded hole 54 into which the shank 44 of the bolt member 40 is threaded is formed on the inner peripheral surface of the second terminal 51 (see FIG. 3). For ease of explanation, the housing 52 of the second connector 12 is not shown in FIG. 2.

[0033] The housing 52 has an inner circumferential wall portion 55 and an outer circumferential wall portion 56 at its tip portion in the direction of the axis L1. The inner circumferential wall portion 55 is cylindrical and protrudes along the axis L1 from a position more inward than the exposed surface 53. The inner space of the inner circumferential wall portion 55 communicates with the female threaded hole 54 of the second terminal 51. When the bolt member 40 is fastened, the shank 44 of the bolt member 40 is threaded into the female threaded hole 54 of the second terminal 51 through the inner space of the inner circumferential wall portion 55.

[0034] The outer peripheral wall 56 of the housing 52 has a cylindrical shape that protrudes along the axis L1 from a position radially outward of the exposed surface 53. The inner peripheral wall 55 and the outer peripheral wall 56 protrude in the same direction. That is, the inner peripheral wall 55 and the outer peripheral wall 56 face each other in a direction perpendicular to the axis L1. When the second connector 12 is viewed in a direction along the axis L1, the exposed surface 53 is located between the inner peripheral wall 55 and the outer peripheral wall 56. The distance between the inner peripheral wall 55 and the outer peripheral wall 56 and the strength of the inner peripheral wall 55 and the outer peripheral wall 56 are set to ensure safety against finger contact with the exposed surface 53. Therefore, the inner peripheral wall 55 and the outer peripheral wall 56 prevent finger contact with the exposed surface 53.

[0035] 2, the second terminal 51 is formed with material inlet holes 57 that communicate with the inner and outer circumferential sides of the second terminal 51 so as to enable the molding of the inner circumferential wall portion 55. For example, two material inlet holes 57 are provided. The two material inlet holes 57 are provided at positions that are 180° apart in the circumferential direction about the axis L1.

[0036] (Regarding material settings for relay terminal 30) The relay terminal 30 is made of a metal whose ionization tendency is intermediate between that of the first terminal 21 and the second terminal 51. For example, if the core wire 23 including the first terminal 21 is made of an aluminum alloy and the second terminal 51 is made of pure copper, the metal for forming the relay terminal 30 is, for example, aluminum bronze.

[0037] (Action of this embodiment) The operation of this embodiment will be described below. When connecting the first connector 11 to the second connector 12, the shank 44 of the bolt member 40 protruding from the bolt insertion hole 33 of the relay terminal 30 attached to the mounting hole 27 is screwed into the female threaded hole 54 of the second terminal 51. As a result, the first terminal 21, the second terminal 51, and the relay terminal 30 are fastened and fixed by the bolt member 40. At this time, the base 31 of the relay terminal 30 is inserted between the inner circumferential wall portion 55 and the outer circumferential wall portion 56 of the second connector 12, and the contact surface 38 of the base 31 contacts the exposed surface 53 of the second terminal 51. As a result, the relay terminal 30 and the second terminal 51 are electrically connected to each other.

[0038] (Effects of this embodiment) The effects of this embodiment will be described below. (1) The connector 10 includes a plate-shaped first terminal 21 having a mounting hole 27, a second terminal 51, a relay terminal 30 provided between the first terminal 21 and the second terminal 51, and a bolt member 40 that fastens the first terminal 21, the second terminal 51, and the relay terminal 30 together. The first terminal 21 and the second terminal 51 are formed of different metals. The relay terminal 30 is formed of a metal whose ionization tendency is intermediate between those of the first terminal 21 and the second terminal 51. With this configuration, the first terminal 21 and the second terminal 51, which are made of different metals, are electrically connected via the relay terminal 30. The relay terminal 30 is formed of a metal whose ionization tendency is intermediate between those of the first terminal 21 and the second terminal 51. Therefore, compared to a configuration in which the first terminal 21 and the second terminal 51 are in direct contact with each other, it is possible to suppress galvanic corrosion between the first terminal 21 and the second terminal 51. Furthermore, the press-fit fixing portion 32 of the intermediate terminal 30 has an insertion portion 34 that is inserted into the mounting hole 27 and a protruding portion 35 that protrudes from the outer surface of the insertion portion 34 and scrapes off the oxide film on the inner surface of the mounting hole 27. With this configuration, by press-fitting the press-fit fixing portion 32 into the mounting hole 27, the protruding portion 35 can remove part of the oxide film on the inner surface of the mounting hole 27. This reduces the contact resistance between the mounting hole 27 and the press-fit fixing portion 32. Furthermore, since it is no longer necessary to remove the oxide film on the mounting hole 27 before press-fitting the press-fit fixing portion 32 into the mounting hole 27, the mounting process can be simplified.

[0039] (2) The connector 10 includes an electric wire 22 having a plate-shaped core wire 23 and an insulating coating 24 that covers the outer periphery of the core wire 23. The core wire 23 has an exposed portion 25 that is exposed from the insulating coating 24. The first terminal 21 is formed integrally with the exposed portion 25. With this configuration, a portion of the core wire 23 can be configured as the first terminal 21, which contributes to reducing the number of parts.

[0040] (3) The relay terminal 30 has a bolt insertion hole 33 through which the bolt member 40 is inserted. The bolt insertion hole 33 has an elongated hole shape that is long along the length direction D1 of the electric wire 22. With this configuration, since the bolt insertion hole 33 of the relay terminal 30 has an elongated hole shape that is long along the length direction D1 of the electric wire 22, it is possible to adjust the position of the bolt member 40 inserted into the bolt insertion hole 33 in the length direction D1 of the electric wire 22. Therefore, even if the positions of the mounting hole 27 and the relay terminal 30 are shifted in the length direction D1 of the electric wire 22 due to thermal expansion of the electric wire 22 or the like, it is possible to fasten the bolt member 40 to the second terminal 51 by adjusting the position of the bolt member 40 in the length direction D1 within the bolt insertion hole 33.

[0041] (4) The relay terminal 30 has a locking protrusion 37 that protrudes from the inner circumferential surface of the bolt insertion hole 33 and locks onto the bolt member 40 in the bolt axial direction (direction along the axis L1), thereby preventing the bolt member 40 from coming off. According to this configuration, the locking protrusion 37 provided in the bolt insertion hole 33 can prevent the bolt member 40 from coming off the bolt insertion hole 33.

[0042] (5) The relay terminal 30 has a contact surface 38 that comes into contact with the second terminal 51 and a pressing surface 36 that is pressed when the relay terminal 30 is press-fitted into the mounting hole 27. With this configuration, the contact surface 38 that comes into contact with the second terminal 51 is not used as the surface that is pressed when the relay terminal 30 is press-fitted into the mounting hole 27, so the contact surface 38 can be protected. For example, this can prevent plating applied to the contact surface 38 from being peeled off due to contact with a press-fitting jig.

[0043] (Other embodiments) The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other to the extent that no technical contradiction occurs.

[0044] The materials of the core wire 23 including the first terminal 21, the material of the relay terminal 30, and the material of the second terminal 51 are not limited to those in the above embodiment, but can be changed as appropriate within a range that has the effect of suppressing galvanic corrosion between the first terminal 21 and the second terminal 51.

[0045] The configuration of the relay terminal 30, such as its shape, is not limited to the above embodiment and can be modified as appropriate. For example, at least one of the pressing surface 36 and the locking protrusion 37 may be omitted from the relay terminal 30. Also, for example, the bolt insertion hole 33 in the relay terminal 30 may be circular, with the axis L1 as its center.

[0046] The first terminal 21 to which the relay terminal 30 is attached may be configured as a separate body from the core wire 23 of the electric wire 22. In this case, for example, the core wire 23 may be a stranded wire made by twisting together a plurality of metal wires, and the first terminal made of a metal plate may be fixed to the tip of the stranded wire.

[0047] In the second connector 12 of the above embodiment, the female threaded hole 54 into which the bolt member 40 is screwed is formed in the second terminal 51, but this is not limited thereto, and the female threaded hole into which the bolt member 40 is screwed may be provided in a member other than the second terminal 51 of the second connector 12.

[0048] The configuration of the bolt member 40, such as its shape, is not limited to that of the above embodiment and may be modified as appropriate. For example, the insulating cap 42 of the bolt member 40 may be omitted. The embodiments disclosed herein are illustrative in all respects, and the present invention is not limited to these examples. That is, the scope of the present invention is defined by the claims, and it is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0049] 10 Connectors 11 First connector 12 Second connector 21 1st terminal 22 Electric wire 23 core wire 24 Insulation coating 25 Exposed part 26 Core wire body 27 Mounting hole 30 Relay terminal 31 Base 32 Press-fit fixing part 33 Bolt insertion hole 33a Part 1 33b 2nd part 34 Insertion section 35 Protrusion 36 Pressing surface 37 Locking protrusion 38 Contact surface 40 Bolt member 41 Bolt body 42 Insulating cap 43 Head 44 Shaft 44a thread 51 2nd terminal 52 Housing 53 Exposed surface 54 female threaded hole 55 Inner peripheral wall 56 Outer wall 57 Material inlet hole D1 Length of the wire L1 axis

Claims

1. a plate-shaped first terminal having a mounting hole; A second terminal; a relay terminal provided between the first terminal and the second terminal; a bolt member that fastens the first terminal, the second terminal, and the relay terminal together, the first terminal and the second terminal are formed of different metals, the relay terminal is formed of a metal having an ionization tendency intermediate between that of the first terminal and that of the second terminal, the first terminal has an oxide coating on a surface of the first terminal including an inner circumferential surface of the mounting hole; the relay terminal has a press-fit fixing portion that is press-fitted and fixed into the mounting hole, The press-fitting portion has an insertion portion that is inserted into the mounting hole, and a protrusion that protrudes from an outer peripheral surface of the insertion portion and scrapes the oxide film on the inner peripheral surface of the mounting hole. connector.

2. the connector includes an electric wire having a core wire formed by a plate-shaped bus bar and an insulating coating covering the outer periphery of the core wire, the core wire has an exposed portion exposed from the insulating coating, The first terminal is integrally formed with the exposed portion. The connector according to claim 1 .

3. the relay terminal has a bolt insertion hole through which the bolt member is inserted, The bolt insertion hole has an elongated hole shape that is long along the length direction of the electric wire. The connector according to claim 2 .

4. The relay terminal has a bolt insertion hole through which the bolt member is inserted, and a locking protrusion that protrudes from an inner peripheral surface of the bolt insertion hole and locks with the bolt member in the bolt axial direction to prevent the bolt member from coming out. The connector according to claim 1 .

5. The relay terminal has a contact surface that comes into contact with the second terminal and a pressing surface that is pressed when the relay terminal is press-fitted into the mounting hole. The connector according to claim 1 .

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