JP5828741B2 - Connector unit - Google Patents

Description

  The present invention relates to a connector unit used for a wire harness or the like that transmits a high-speed transmission signal.

  In high-speed transmission connector units used for wiring harnesses that transmit high-speed transmission signals consisting of high-frequency signals in wiring inside the vehicle, the characteristic impedance that comes from the connector shape affects the transmission characteristics, so the shape can be downsized. It has been demanded. However, since the reduction in size reduces the contact area between the terminal fittings of the connectors and the contact load, it becomes difficult to maintain the performance before miniaturization, and the size cannot be significantly reduced. Conventionally, in order to cope with these problems, the contact surface is treated with gold plating to improve the contact resistance. However, since gold plating is expensive, there is a problem that the improvement cost is reflected in the product price. For this reason, both miniaturization and low cost have been demanded.

  Therefore, an object of the present invention is to provide a connector unit that can be miniaturized for high-speed transmission and can obtain sufficient contact reliability.

The invention described in claim 1 for solving the above-mentioned problem is a first metal rod having a rod-like first metal member (12) and a first housing (11) for housing the first metal member (12). Connector (10), a rod-shaped second metal member (22), and a second housing (21) for accommodating the second metal member (22), and the first connector (10) A second connector (20) that can be fitted, and end surfaces (12B1, 22B1) of the tip portions (12B, 22B) of the first and second metal members (12, 22), respectively, The first and second housings (11, 21) are exposed, and the end surface (12B1) of the distal end portion (12B) of the first metal member (12) is the longitudinal direction of the first metal member (12). Formed in a direction perpendicular to the direction and the outer edge of the end face (12B1) It has a plurality of convex portions on the inside is convex from the end surface (12B1) and (12B2), the end surface of the distal end portion (22B) of the second metal member (22) (22B1), said second It formed in a direction perpendicular to the longitudinal direction of the metal member (22), and is concave from the end surface (22B1) on the inside of the outer edge of the end face (22B1) corresponding to said convex portion (12B2), a plurality of A concave portion (22B2) is provided, and by fitting the second connector (20) to the first connector (10), the distal end portions of the first and second metal members (12, 22) ( 12B, 22B) end surfaces (12B1, 22B1) are in contact with each other, the convex portion (12B2) and the concave portion (22B2) are in contact, and the plurality of convex portions and the plurality of concave portions are circular or annular. And concentrically arranged And said that you are.

  The invention according to claim 2 for solving the above-described problem is the connector unit according to claim 1, wherein the end surfaces (12B, 22B) of the front end portions (12B, 22B) of the first and second metal members (12, 22) are provided. 12B1, 22B1), the convex portion (12B2), and the concave portion (22B2) all over the plating layer (14) made of a metal material having a resistivity lower than that of the first and second metal members (12, 22). 24) is formed.

The invention according to claim 3 for solving the above-mentioned problem is a first metal member having a rod-like first metal member (12) and a first housing (11) for housing the first metal member (12). Connector (10), a rod-shaped second metal member (22), and a second housing (21) for housing the second metal member (22), and the first connector (10) A second connector (20) that can be fitted, and the first and second metals are respectively provided at the distal ends (12B, 22B) of the first and second metal members (12, 22). The base ends of the third and fourth metal members (13, 23) made of a metal material having a lower resistivity than the member and having the same diameter as the first and second metal members are joined together, The end surface (13A) of the tip of the third metal member (13) is the first metal member (1). Has become parallel to the direction perpendicular to the longitudinal direction of), and has a plurality of protrusions which is convex on the inside of the outer edge from the end face (13A) of said end face (13A) and (13B), the The end surface (23A) of the tip end portion of the fourth metal member (23) is parallel to the direction orthogonal to the longitudinal direction of the second metal member (22), and the outer edge of the end surface (23A). A plurality of concave portions (23B) corresponding to the convex portions (13B), which are concave from the end surface (23A) inside the second connector (2) to the first connector (10) ( 20), the end surfaces (13A, 23A) of the tip portions of the third and fourth metal members (13, 23) come into contact with each other, and the convex portion (13B) and the concave portion (23B) are brought into contact with each other. contacting said plurality of protrusions and the plurality of recesses form a circular or annular While being characterized by being arranged concentrically.

  According to a fourth aspect of the present invention for solving the above-described problem, in the connector unit according to the third aspect, the end surfaces (13A, 23A) of the distal ends of the third and fourth metal members (13, 23) and A plating layer made of a metal material having a resistivity lower than that of the third and fourth metal members (13, 23) is formed on the entire surface of the protrusion (13B) and the recess (23B). Features.

  Note that the reference numerals in parentheses in the description of the means for solving the above-described problems correspond to the reference numerals of the constituent elements in the description of the mode for carrying out the invention below. It is not intended to limit the interpretation of the claims.

  According to the first aspect of the present invention, in the connector unit in which the first and second connectors are connected to each other by contacting the end surfaces of the tip portions of the metal members of the first and second connectors, The end surface of the distal end portion of the metal member has at least one convex portion, and the end surface of the distal end portion of the second metal member has at least one concave portion corresponding to the convex portion, By fitting the second connector to the connector, the end surfaces of the tip portions of the first and second metal members are in contact with each other and the convex portion and the concave portion are in contact with each other. As a result, the contact resistance is reduced, the size can be reduced and sufficient contact reliability can be obtained, and a connector unit useful for high-speed transmission can be obtained.

  According to the second aspect of the present invention, the resistivity of the first and second metal members over the entire surfaces of the end surfaces, the convex portions, and the concave portions of the first and second metal members having a large contact area. Since the plated layers 14 and 24 are formed of a metal material having a low thickness, the contact resistance is further reduced, and sufficient contact reliability is obtained. In addition, since the contact area of the end face of the metal member is large, it is possible to use inexpensive tin plating instead of expensive gold plating, thereby achieving both product cost and performance as a high-speed transmission connector for vehicles. Can be made.

  According to the invention described in claim 3, the first and second connectors are made of a metal material having a lower resistivity than the first and second metal members at the tip ends of the metal members of the first and second connectors, respectively. The base end portions of the third and fourth metal members having the same diameter as the metal member are joined, and the end surface of the distal end portion of the third metal member is orthogonal to the longitudinal direction of the first metal member. The end surface of the fourth metal member is parallel to the direction and has at least one convex portion protruding from the end surface inside the outer edge of the end surface. And having at least one concave portion corresponding to the convex portion that is parallel to the direction orthogonal to the longitudinal direction and that is concave from the end surface inside the outer edge of the end surface, to the first connector By fitting the second connector, the end surfaces of the tip portions of the third and fourth metal members are brought together. Touching and the convex part and concave part come into contact, so the contact area is larger than when the end face is flat, thereby reducing contact resistance, miniaturization and sufficient contact reliability, and high-speed transmission A useful connector unit can be obtained.

  According to the fourth aspect of the present invention, a metal material having a resistivity lower than that of the third and fourth metal members is provided on the entire surfaces of the end surfaces, the convex portions, and the concave portions of the tip portions of the third and fourth metal members. As a result, the contact resistance is further reduced, and sufficient contact reliability can be obtained. In addition, since the contact area of the end face of the metal member is large, it is possible to use inexpensive tin plating instead of expensive gold plating, thereby achieving both product cost and performance as a high-speed transmission connector for vehicles. Can be made.

1 shows a first embodiment of a connector unit of the present invention, (A) is a perspective view, (B) is a partial cross-sectional view. (First embodiment) It is an enlarged view of the front-end | tip part of a metal member, (A) is a perspective view, (B) is sectional drawing. (First embodiment) The modification of the end surface of a metal member is shown, (A) is before fitting and (B) is a schematic sectional drawing after fitting. (Modification 1) The other modification of the end surface of a metal member is shown, (A) is a perspective view, (B) is a fragmentary sectional view. (Modification 2) The 2nd Embodiment of the connector unit of this invention is shown, (A) is an expansion perspective view of the front-end | tip part of a metal member, (B) is a fragmentary sectional view. (Second Embodiment) It is sectional drawing of the front-end | tip part of the metal member which shows 3rd Embodiment of the connector unit of this invention. (Third embodiment)

  In summary, the present invention is a connector unit that connects connectors by bringing the tip portions of the metal members of the first and second connectors into contact with each other, and has a contact structure having an uneven portion on the contact surface between the tip portions. It is characterized by that.

  Since the contact resistance is proportional to the resistivity and length of the conductor and inversely proportional to the contact area (cross-sectional area) (contact resistance = resistivity × conductor length / contact area), the present invention provides a planar contact surface. By increasing the contact area compared to the contact structure between flat surfaces by providing an uneven portion on the surface, it is possible to reduce the contact resistance, thereby reducing the size and size of the connector unit that is useful for high-speed transmission. It is to provide.

  Hereinafter, an embodiment of a connector unit of the present invention will be described with reference to FIGS.

  (First Embodiment) FIGS. 1A and 1B show a connector unit according to a first embodiment of the present invention, in which FIG. 1A is a perspective view and FIG. 1B is a partial sectional view. FIG. 2 is an enlarged view of the configuration of the end face of the metal member, (A) is a perspective view, and (B) is a cross-sectional view. 3A and 3B show a modification of the end face of the metal member. FIG. 3A is a schematic cross-sectional view before fitting, and FIG. 3B is a schematic cross-sectional view after fitting. 4A and 4B show another modification of the end face of the metal member, where FIG. 4A is a perspective view and FIG. 4B is a partial cross-sectional view.

  As shown in FIG. 1, the connector unit 1 of the present invention includes a female connector 10 as a first connector and a male connector 20 as a second connector.

  The female connector 10 includes a housing 11 as a first housing and a rod-shaped metal member 12 as a first metal member housed in the housing 11. The housing 11 is a connection body between the covered wires 31 and 32 constituting the twisted wires 30 useful for high-speed transmission communication because of the electromagnetic wave shielding effect and the crosstalk reducing effect, and the metal member 12 connected to the ends of these covered wires. It is formed by insert molding. That is, the housing 11 is molded by injecting a heat-melted synthetic resin into the mold in a state where the connection body is inserted into the molding die, and cooling and solidifying the synthetic resin. The covered electric wires 31 and 32 have conductive core wires 31a and 32a and insulating covering portions 31b and 32b that cover the core wires, respectively.

  The housing 11 has a substantially rectangular parallelepiped shape. The end of the twisted wire 30 is inserted into one end of the rectangular parallelepiped, and a recess 11a for fitting the male connector 20 is formed at the other end. ing. Guide grooves 11b are respectively formed on the inner side of the upper wall and the lower wall that form the recess 11a.

  The metal member 12 is formed using a metal such as a copper alloy so as to have a cylindrical rod-like shape having a diameter substantially the same as the diameter of the covered wires 31 and 32 of the twisted wire 30, and its base end portion 12 </ b> A. Are connected to the core wires 31a, 32a of the covered electric wires 31, 32 by connection means such as welding. Alternatively, the base end portion 12A of the metal member 12 may have a caulking connection structure as a connecting means, and may be caulked and connected to the end portions of the covered electric wires 31 and 32. The distal end portion 12B of the metal member 12 is disposed so as to be exposed from the bottom wall of the recess 11a formed in the housing 11.

  The male connector 20 includes a housing 21 as a second housing and a rod-shaped metal member 22 as a second metal member accommodated in the housing 21. The housing 21 is formed by insert molding with respect to a connection body of the covered electric wires 41 and 42 constituting the twisted wire 40 and the metal member 22 connected to the ends of these covered electric wires. The covered electric wires 41 and 42 have conductive core wires 41a and 42a and insulating covering portions 41b and 42b, respectively.

  The housing 21 has a substantially rectangular parallelepiped shape. The end of the twisted wire 40 is inserted into one end of the rectangular parallelepiped, and the female connector 10 is fitted to the upper and lower sides of the outer periphery near the other end. A protrusion 21a that is inserted into the guide groove 11b of the recess 11a of the female connector 10 is formed.

  The metal member 22 is formed using a metal such as a copper alloy so as to have a cylindrical rod-like shape having a diameter substantially the same as the diameter of the covered wires 41 and 42 of the twisted wire 40, and its base end portion 22A. Are connected to the core wires 41 a and 42 a of the covered electric wires 41 and 42 by the same connecting means as the base end portion of the metal member 12 of the female connector 10. The distal end portion 22 </ b> B of the metal member 22 is disposed so as to be exposed from the other end portion of the housing 21.

  FIG. 2 is an enlarged view of the tip portions 12B and 22B of the metal members 12 and 22. As shown in FIG. A plurality of tip portions 12B of the metal member 12 are convex from the end surface 12B1 inside the outer edge of the end surface 12B1 formed so as to be flat in a direction orthogonal to the longitudinal direction of the metal member 12 (four in this embodiment are shown). However, at least one may be provided.) Convex portions 12B2 projecting in a concentric shape (ripple shape) are formed.

  Similarly, the front end portion 22B of the metal member 22 is recessed in a plurality of concentric circles that are recessed from the end surface 22B1 inside the outer edge of the end surface 22B1 formed so as to be flat in a direction orthogonal to the longitudinal direction of the metal member 22. A recess 22B2 is formed. The concave portions 22B2 are formed in a number corresponding to the convex portions 12B2.

  The convex portion 12B2 and the concave portion 22B2 can be surfaces having an arbitrary curvature. For example, the convex portion 12B2 has a semicircular cross section, and the concave portion 22B2 corresponds to the semicircular shape of the convex portion 12B2. It is set as the recessed part shape which has a negative curvature.

  When the connector unit 1 configured as described above is used, the male connector 20 is inserted into the recess 11a of the female connector 10 so that the distal end portion 12B of the metal member 12 and the distal end portion 22B of the metal member 22 are in contact with each other. To fit. When fitting, the protrusion 21a of the male connector 20 is inserted into the guide groove 11b of the female connector 10 to guide the fitting of both connectors.

  Specifically, the contact between the distal end portion 12B and the distal end portion 22B by fitting between the connectors is such that the end surfaces 12B1 and 22B1 are in contact with each other, and the convex portion 12B2 and the concave portion 22B2 corresponding to the convex portion 12B2B. Will be in contact.

  Although not shown, in order to ensure the contact between the metal members 12 and 22, a biasing means (such as an elastic engagement member) that biases the connector in the direction of strengthening the fitting when the connectors are fitted together. Etc.) is preferably provided on one or both of the female connector 10 and the male connector 20.

  Thus, in the present invention, when the metal members 12 and 22 that function as terminal fittings are in contact with each other, contact between the end surfaces of the end surface 12B1 and the end surface 22B1 and contact between the convex portion 12B2 and the concave portion 22B2 occur. The contact area of the metal member is increased and the contact resistance is reduced as compared to contact between planar end surfaces having no single convex portion or concave portion on the end surface. For example, when the cross section of the convex portion 12B2 is a semicircular shape and the concave portion 22B2 is a concave shape having a negative curvature corresponding to the semicircular shape of the convex portion 12B2, the contact area is the convex portion 12B and the concave portion. It is about 1.5 (π / 2) times larger than the contact between the planar end faces in the same region as 22B2.

  In general, the contact portion between the connectors has a relationship that the contact resistance increases as the contact area decreases. Therefore, when the contact area between the connectors is reduced by downsizing the connector unit, the contact resistance increases. Therefore, in the present invention, if one surface is concave so that both surfaces in contact with the contact surfaces of the metal members match, the other forms a convex portion to increase the contact area.

  Therefore, according to the present invention, by connecting the female connector and the male connector by bringing the end faces of the metal members into contact with each other in the connector unit, the contact reliability can be achieved with a small and low contact load with a sufficiently low contact resistance. Therefore, a connector unit having a performance useful as a high-speed transmission connector for a vehicle can be realized.

  Further, according to the present invention, the end surfaces of the metal members having substantially the same diameter as the diameter of the covered electric wire are brought into contact with each other so that the connectors are electrically connected to each other. The size of the connector can be reduced, thereby connecting the connectors by inserting the male terminal of the male connector through the insertion hole of the female connector and contacting the spring-shaped female terminal. The connector unit can be downsized.

  In addition, according to one Embodiment mentioned above, although the convex part formed in the end surface of a metal member has several concentric circular convex, it is not restricted to this, A convex part and a recessed part are the outer edges of an end surface. At least one may be formed on the inside of the connector, and a convex portion and a concave portion are formed on the end surface of one metal member of one connector, and a corresponding concave portion and convex portion are formed on the metal member of the other connector. May be.

  (Modification 1) FIGS. 3A and 3B show a modification of the end face of the metal member. FIG. 3A is a schematic sectional view before fitting, and FIG. 3B is a schematic sectional view after fitting. In FIG. 3A, one convex portion 12B3 and two concave portions 12B4 are formed in a corrugated shape inside the outer edge of the end surface 12B of the metal member 12 of the female connector, and on the end surface 22B of the metal member 22 of the male connector. The two convex portions 22B3 and one concave portion 22B4 are formed in a corrugated shape so as to correspond to the convex portion 12B3 and the concave portion 12B4 of the end face 12B, respectively.

  As shown in FIG. 3B, when the connectors are fitted together, the end surfaces of the metal member 22 of the male connector 20 corresponding to the end surfaces 12B1, 12B3, and 12B4 of the metal member 12 of the female connector 10, respectively. 22B1, recessed part 22B4, and convex part 22B3 contact, and the contact area is enlarged.

  (Modification 2) FIGS. 4A and 4B show another modification of the end face of the metal member. FIG. 4A is a perspective view and FIG. 4B is a partial cross-sectional view. In FIG. 4 (A), a plurality of (arbitrary number, at least one) convex arm-shaped convex portions 12B5 are formed inside the outer edge of the end surface 12B1 of the metal member 12 of the female connector. Correspondingly, a recess having a shape opposite to the shape of the protrusion 12B5 is formed on the end face of the metal member of the male connector (not shown). When the connectors are fitted to each other, the convex portions 12B5 on the end surface 12B1 of the metal member 12 of the female connector 10 are brought into contact with the concave portions on the end surfaces of the corresponding metal members of the male connector, thereby increasing the contact area. ing.

  The convex portion 12B5 and the concave portion can have curved surfaces having arbitrary curvatures. For example, the convex portion 12B5 has a spherical cross section, and the concave portion has a curvature corresponding to the spherical shape of the convex portion 12B5. It has a concave shape having.

  (Second Embodiment) FIG. 5 shows a second embodiment of the connector unit of the present invention, in which (A) is an enlarged perspective view of tip portions 12B and 22B of the metal members 12 and 22, and (B) is a partial view. It is sectional drawing. As shown in FIG. 5, the metal member 12 has a sheet metal-like third metal having the same diameter as that of the metal member 12 on an end surface 12B1 formed at the tip so as to be flat in a direction orthogonal to the longitudinal direction. One surface (base end portion end surface) of the metal member 13 as a member is joined by an appropriate joining method (joining with an adhesive, welding, or the like). A plurality (four in this embodiment) projecting from the surface 13A are shown on the inside of the outer edge of the other surface (end surface end surface) 13A of the metal member 13 parallel to the end surface 12B1 of the metal member 12. However, at least one may be provided.) Convex portions 13B protruding in a concentric shape (ripple shape) are formed.

  The metal member 22 has a metal plate 23 as a fourth metal member having the same diameter as that of the metal member 22 on an end surface 22B1 formed at the tip so as to be flat in a direction perpendicular to the longitudinal direction. One surface (base end portion end surface) is joined by an appropriate joining method (joining with an adhesive, welding, or the like). On the inner side of the outer edge of the other surface (tip end surface) 23A of the metal member 23 that is parallel to the end surface 22B1 of the metal member 22, a plurality of concentric recesses 23B that are recessed from the surface 23A are formed. ing. The concave portions 23B are formed in a number corresponding to the convex portions 13B.

  The convex portion 13B and the concave portion 23B can be surfaces having arbitrary curvatures. For example, the convex portion 13B has a semicircular cross section, and the concave portion 23B corresponds to the semicircular shape of the convex portion 13B. It is set as the recessed part shape which has a negative curvature.

  When the connector unit 1 configured as described above is used, the male connector 20 is inserted into the recess 11a of the female connector 10 so that the distal end portion 12B of the metal member 12 and the distal end portion 22B of the metal member 22 are in contact with each other. To fit. Specifically, the contact between the tip 12B of the metal member 12 and the tip 22B of the metal member 22 due to the fitting between the connectors is such that the end surfaces of the surface 13A of the metal member 13 and the surface 23B of the metal member 23 are in contact with each other. The convex portion 13B comes into contact with the concave portion 23B corresponding to the convex portion 13B.

  Thus, in the second embodiment of the present invention, the joined body of the metal member 12 and the metal member 13 and the joined body of the metal member 22 and the metal member 23 each function as a terminal fitting. When the terminal fittings are in contact with each other, the contact between the surface 13A of the metal member 12 and the surface 23A of the metal member 23 and the contact between the convex portion 13B and the concave portion 23B occur, so that one convex portion is formed on the end surface. Compared with the contact between flat surfaces having no recesses, the contact area is increased and the contact resistance is reduced.

  (Third Embodiment) FIG. 6 shows a third embodiment of the connector unit of the present invention. FIG. 6A is a cross-sectional view of the tip portions 12B and 22B of the metal members 12 and 22. FIG. As shown in FIG. 6, as in the first embodiment described above, the distal end portion 12 </ b> B of the metal member 12 is an outer edge of the end surface 12 </ b> B <b> 1 formed so as to be flat in a direction orthogonal to the longitudinal direction of the metal member 12. A plurality of concentric protrusions (ripples) protruding from the end face 12B1 are formed on the inner side of the protrusion 12B2.

  Moreover, the front-end | tip part 22B of the metal member 22 was dented in the concentric form which becomes concave from the end surface 22B1 inside the outer edge of the end surface 22B1 formed so that it might become a plane in the direction orthogonal to the longitudinal direction of the metal member 22. A recess 22B2 is formed. The concave portions 22B2 are formed in a number corresponding to the convex portions 12B2.

  Further, the entire surface of the end surface 12B1 and the convex portion 12B2 of the tip end portion 12B is subjected to a surface treatment by metal plating using an inexpensive metal material having a lower resistivity than the metal member 12, such as tin, and the plating layer 14 is formed. Is formed. That is, the plating layer 14 is formed of the plating end surface 14B1 and the plating projection 14B2 that cover the end surface 12B1 and the projection 12B2 with the same thickness.

  Similarly, the entire surface of the end face 22B1 and the recess 22B2 of the tip 22B is subjected to a surface treatment by metal plating using a metal material having a lower resistivity than the metal member 22, such as tin, so that the plating layer 24 is formed. Is formed. That is, the plating layer 24 is formed by the plating end surface 24B1 and the plating recess 24B that cover the end surface 22B1 and the recess 22B2 with the same thickness.

  The contact between the distal end portion 12B of the metal member 12 and the distal end portion 22B of the metal member 22 by fitting between the connectors is performed by the plating layer 14 formed on the distal end portion 12B and the plating layer 24 formed on the distal end portion 22B. Specifically, the end surfaces of the plating end surface 14A and the plating end surface 24A are in contact with each other, and the plating convex portion 14B and the plating concave portion 24B corresponding to the plating convex portion 14B are in contact with each other.

  As described above, in the third embodiment, the metal member 12 and the plating layer 14, and the metal member 22 and the plating layer 24 function as terminal fittings, respectively. When the terminal fittings are in contact with each other, the contact between the plating end surface 14A and the plating end surface 24A and the contact between the plating convex portion 14B and the plating concave portion 24B occur, so there is no single convex portion or concave portion on the end surface. Compared with the contact between the planar end faces, the contact area is increased and the contact resistance is reduced. Therefore, an inexpensive tin plating can be achieved without using the gold plating utilized for reducing the contact resistance, and the cost can be reduced. Accordingly, in the connector unit, contact reliability can be obtained with a small and low contact load with sufficiently low contact resistance, and useful performance as a high-speed transmission connector for a vehicle can be achieved, and the gold plating of the contact portion surface treatment can be achieved. Since it becomes unnecessary, the product cost is reduced, and both product cost and performance can be achieved.

  As described above, one embodiment of the present invention has been described. However, the present invention is not limited to this, and various modifications and applications are possible.

  For example, the outer shape of the female connector and the male connector is formed in a rectangular parallelepiped shape in the above embodiment, but may be other shapes such as a columnar shape.

  In the above embodiment, a twisted wire is used as the transmission line, but other types of electric wires may be used.

  In the second embodiment, the metal member having the same diameter as that of the metal member is joined to the tip of the metal member. However, the shape of the metal member is not limited to the sheet metal shape, and may be a rod shape or the like. Other shapes may be used.

  Similarly to the third embodiment, the end surfaces of the tips of the metal members 13 and 23 and the entire surfaces of the protrusions and the recesses of the second embodiment are made of a metal material having a resistivity lower than that of the metal members 13 and 23. A plating layer (for example, tin plating) may be formed.

  The formation of the plating layer in the third embodiment can also be applied to the tip of the metal member shown in FIGS.

1 Connector unit 10 Female connector (first connector)
11 Housing (first housing)
12 Metal member (first metal member)
12B tip part 12B1 end face 12B2 convex part 13 metal member (third metal member)
13A End face 13B Convex part 14 Plating layer 20 Male connector (second connector)
21 Housing (second housing)
22 Metal member (second metal member)
22B tip portion 22B1 end face 22B2 convex portion 23 metal member (fourth metal member)
23A End portion end face 23B Convex portion 24 Plating layer

Claims (4)

A first connector having a rod-shaped first metal member and a first housing for housing the first metal member;
A second metal member having a rod shape and a second housing that accommodates the second metal member, and a second connector that can be fitted to the first connector;
The end surfaces of the tip portions of the first and second metal members are exposed from the first and second housings, respectively.
The end surface of the front end portion of the first metal member is formed in a direction orthogonal to the longitudinal direction of the first metal member, and includes a plurality of convex portions protruding from the end surface inside the outer edge of the end surface. Have
The end surface of the tip portion of the second metal member is formed in a direction orthogonal to the longitudinal direction of the second metal member, and is recessed from the end surface inside the outer edge of the end surface. Correspondingly has a plurality of recesses,
By fitting the second connector to the first connector, the end surfaces of the tip portions of the first and second metal members are in contact with each other, and the convex portion and the concave portion are in contact with each other ,
The plurality of convex portions and the plurality of concave portions are formed in a circular shape or an annular shape, and are arranged concentrically . The connector unit according to claim 1,
A plating layer made of a metal material having a resistivity lower than that of the first and second metal members is formed on the entire end surfaces of the first and second metal members and on the entire surfaces of the protrusions and the recesses. Connector unit characterized by being made. A first connector having a rod-shaped first metal member and a first housing for housing the first metal member;
A second metal member having a rod shape and a second housing that accommodates the second metal member, and a second connector that can be fitted to the first connector;
The tip portions of the first and second metal members are each made of a metal material having a lower resistivity than the first and second metal members and have the same diameter as the first and second metal members. The base ends of the third and fourth metal members having
The end surface of the tip portion of the third metal member is parallel to a direction orthogonal to the longitudinal direction of the first metal member, and a plurality of convex surfaces protrude from the end surface inside the outer edge of the end surface. Has a convex part,
The end surface of the distal end portion of the fourth metal member is parallel to a direction orthogonal to the longitudinal direction of the second metal member, and is recessed from the end surface inside the outer edge of the end surface, It has a plurality of concave parts corresponding to the convex parts,
By fitting the second connector to the first connector, the end surfaces of the tip portions of the third and fourth metal members are in contact with each other, and the convex portion and the concave portion are in contact with each other ,
The plurality of convex portions and the plurality of concave portions are formed in a circular shape or an annular shape, and are arranged concentrically . In the connector unit according to claim 3,
A plating layer made of a metal material having a resistivity lower than that of the third and fourth metal members is formed on the entire end surfaces of the tip portions of the third and fourth metal members and the entire surfaces of the convex portions and the concave portions. A connector unit characterized by

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