Connectors and connector units

Abstract

To provide a connector that can suppress the effects of rotational force of a screw portion.SOLUTION: A connector 10 includes a connector housing 22 having an electric wire outlet 20, a terminal 16 accommodated in the connector housing 22, an electric wire 24 connected to the terminal 16 and drawn out of the connector housing 22 from the electric wire outlet 20, a screw portion 26 that is screwed into a mating screw portion 30 provided on the mating connector 14 side and generates mating force to the mating connector 14 by axial force acting between the mating screw portion 30 and the screw portion 26, and an abutting portion 28 that can abut against an abutted portion 32 provided on the mating connector 14 side, and the abutting portion 28 is provided on the wire 24 side of the screw portion 26, and as the screw portion 26 rotates, the abutting portion 28 abuts against the abutted portion 32 to prevent displacement of the connector housing 22 in the rotation direction of the screw portion 26.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to a connector and a connector unit.

Background Art

[0002] Conventionally, in order to electrically connect in-vehicle devices, a connector unit has been used in which a connector connected to one device side is fitted into a mating connector connected to the other device side. In recent years, due to an increase in the current of in-vehicle devices, etc., the connector has become larger, and the fitting force required for connector fitting has also increased. Therefore, in Patent Document 1, when fitting a connector into a mating connector, a screw portion (such as a bolt) provided on the connector is screwed into a mating screw portion (threaded hole) provided on the mating connector side, and the axial force acting between the two screw portions is used as the fitting force. A structure has been proposed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in order to generate an axial force that can be used as the fitting force between large connectors, both screw portions also become larger, and the rotational force generated during screwing also increases. Therefore, when fitting a connector into a mating connector, the entire connector may rotate due to the rotational force of the screw portion, and the rotational force of the screw portion may act on the resin housing and terminal portion of each connector. In particular, when the wire diameter increases due to an increase in the current of in-vehicle parts, etc., or when the wire crimping portion of the terminal becomes longer in the extending direction of the wire, the wire side is more likely to sway due to the rotational force of the screw portion than the screw portion.

[0005] Therefore, a connector and a connector unit that can suppress the influence of the rotational force of the screw portion are disclosed. [Means for solving the problem]

[0006] The connector of this disclosure comprises a connector housing having a wire outlet, a terminal housed in the connector housing, a wire connected to the terminal and drawn out from the wire outlet to the outside of the connector housing, a threaded portion that screws into a mating threaded portion provided on the mating connector side and generates a mating force to the mating connector by an axial force acting between it and the mating threaded portion, and a contact portion that can contact a contacted portion provided on the mating connector side, wherein the contact portion is provided on the wire side of the threaded portion, and as the threaded portion rotates, the contact portion contacts the contacted portion to prevent displacement of the connector housing in the direction of rotation of the threaded portion.

[0007] The connector unit of the present disclosure is a connector unit in which a connector and a mating connector are mated, wherein the connector is the connector of the present disclosure, and the mating connector has a mating threaded portion into which the threaded portion is screwed, and a contacted portion into which the contact portion is contacted. [Effects of the Invention]

[0008] The connector and connector unit of this disclosure make it possible to suppress the effects of rotational force on the screw portion. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view showing a connector unit according to Embodiment 1. [Figure 2] Figure 2 is a rear view of the connector unit shown in Figure 1. [Figure 3] Figure 3 is a cross-sectional view taken along line III-III in Figure 2. [Figure 4] Figure 4 is a cross-sectional view taken along line IV-IV in Figure 2. [Figure 5] Figure 5 is a cross-sectional view of the VV section in Figure 2. [Figure 6]Figure 6 is a cross-sectional view taken along the line VI-VI in Figure 2. [Figure 7] Figure 7 is a perspective view showing the connector and mating connector that make up the connector unit shown in Figure 1 in an unconnected state. [Figure 8] Figure 8 is a vertical cross-sectional view showing the connection between the connector shown in Figure 7 and the mating connector, and corresponds to Figure 4. [Figure 9] Figure 9 is a cross-sectional view taken along the line IX-IX in Figure 8. [Figure 10] Figure 10 is an exploded perspective view showing a partially disassembled version of the connector shown in Figure 7. [Figure 11] Figure 11 is a perspective view of the first retaining portion, which constitutes the connector shown in Figure 7, from the rear side. [Figure 12] Figure 12 is a rear view of the first holding part shown in Figure 11. [Figure 13] Figure 13 is a perspective view of the mating connector shown in Figure 7. [Modes for carrying out the invention]

[0010] <Description of Embodiments in this Disclosure> First, embodiments of this disclosure will be listed and described. The connector disclosed herein is (1) A connector housing having a wire outlet; a terminal housed in the connector housing; a wire connected to the terminal and pulled out from the wire outlet to the outside of the connector housing; a screw portion that screws into a mating screw portion provided on the mating connector side and generates a mating force to the mating connector by the axial force acting between it and the mating screw portion; and a contact portion that can contact a contacted portion provided on the mating connector side, wherein the contact portion is provided on the wire side of the screw portion, and as the screw portion rotates, the contact portion contacts the contacted portion to prevent displacement of the connector housing in the direction of rotation of the screw portion.

[0011] According to the connector of this disclosure, a contact portion provided on the wire side of the threaded portion that generates the mating force to the mating connector comes into contact with a contacted portion provided on the mating connector side as the threaded portion rotates, thereby preventing displacement of the connector housing in the direction of rotation of the threaded portion. As a result, in a type of connector (so-called bolt-assist type) that utilizes the axial force acting between the threaded portion and the mating threaded portion as the mating force of the connector to the mating connector, it is possible to utilize the mating force due to the screwing of the threaded portion while suppressing the effects of rotation of the threaded portion, which have been a problem in the past. In particular, because the contact portion is provided on the wire side of the threaded portion, displacement on the wire side, where vibrations due to the rotation of the threaded portion tend to be large, can be advantageously prevented, and displacement of the connector housing due to the rotation of the threaded portion can be prevented more reliably.

[0012] (2) In (1) above, it is preferable that one of the contact portion and the contacted portion includes the outer circumferential surface of a convex portion that protrudes toward the mating connector in the axial direction of the screw portion, and the other of the contact portion and the contacted portion includes the inner circumferential surface of a recess provided on the mating connector side and accommodating the convex portion. The contact portion or contacted portion configured using the outer circumferential surface of a convex portion that protrudes toward the mating connector in the axial direction of the screw portion is surrounded over the entire circumference in the circumferential direction by the contacted portion or contacted portion configured using the inner circumferential surface of a recess accommodating the convex portion. Therefore, the displacement of the connector housing due to the rotation of the screw portion is prevented in any direction by the contact of the contact portion with the contacted portion, and the displacement of the connector housing due to the rotation of the screw portion can be prevented more stably with a simple structure.

[0013] (3) In the above (1) or (2), it is further provided with a metal retainer that is connected to the connector housing and holds the electric wire drawn out from the electric wire outlet, and it is preferable that the contact portion is integrally provided on the metal retainer. Since the contact portion is integrally provided on the metal retainer that holds the electric wire drawn out from the electric wire outlet, the contact portion can be advantageously provided at a position separated from the screw portion toward the electric wire side by using the metal retainer. In addition, since the retainer that holds the electric wire drawn out from the electric wire outlet is made of metal, the contact portion integrally provided thereon can also be formed of metal. Therefore, the influence of the reaction force when contacting the contacted portion due to the rotation of the screw portion can also be advantageously avoided, and the displacement prevention performance of the connector housing by the contact of the contact portion with the contacted portion can be stably ensured.

[0014] (4) In the above (3), it is further provided with a metal shield shell that covers the connector housing and is connected to the connector housing. The shield shell has a first fastening portion provided with a first bolt insertion hole through which a first bolt having the screw portion is inserted. The metal retainer has a second fastening portion that is fastened to the fixed wall portion of the mating connector. The shield shell and the metal retainer are assembled to each other by combining an assembling portion provided on one side with an assembled portion provided on the other side. Between the opposing surfaces of the assembling portion and the assembled portion, there is a first tolerance absorption gap that extends in a first direction. The second bolt insertion hole that penetrates the second fastening portion constitutes the first tolerance absorption gap that extends in the first direction. The metal retainer is preferably assembled to be displaceable with respect to the shield shell by the amount of the first tolerance absorption gap.

[0015] When a shield shell for suppressing the intrusion of external noise is connected to cover the connector housing, the metal retainer can be assembled to the shield shell by being combined with the assembled part of the assembling part, and the detachment of the metal retainer from the shield shell can be advantageously prevented. Further, since the metal retainer is fastened to the fixed wall portion of the mating connector (for example, the housing of the device in which the mating connector is housed and fixed) at the second fastening portion, the external force transmitted from the electric wire can be advantageously suppressed or prevented from being transmitted from the metal retainer to the terminal side. In addition, there is a first tolerance absorption gap that extends in the first direction between the opposing surfaces of the assembling part and the assembled part, and the second bolt insertion hole that penetrates the second fastening portion constitutes a first tolerance absorption gap that extends in the first direction, and the metal retainer is assembled to the shield shell so as to be displaceable by the amount of the first tolerance absorption gap. Thereby, after the connector is fitted to the mating connector by rotating the screw portion and fastened at the first fastening portion, when the second fastening portion is fastened to the fixed wall portion of the mating connector, the tolerance can be absorbed by the first tolerance absorption gap, and it becomes possible to advantageously perform bolt fastening of the metal retainer to the fixed wall portion.

[0016] Note that the assembling part and the assembled part may adopt any shape and structure as long as they can realize the assembly of the metal retainer to the shield shell. Further, the direction (first direction) in which the first tolerance absorption gap extends can be arbitrarily set in a direction in which a tolerance can occur, such as the same direction as the extending direction of the electric wire or a direction orthogonal to the extending direction of the electric wire. The first direction in which the first tolerance absorption gap extends may be set in one direction or may be set in a plurality of directions.

[0017] (5) In (3) or (4) above, it is preferable that the metal retainer has a second fastening portion that is fastened to the fixed wall portion of the mating connector, the second fastening portion protrudes toward the fixed wall portion along the axial direction of the screw portion, and the abutment portion is formed by the outer circumferential surface of the second fastening portion and is capable of abutting against the abutted portion provided on the fixed wall portion. Since the metal retainer is fastened to the fixed wall portion of the mating connector (for example, the housing of the equipment in which the mating connector is housed and fixed) at the second fastening portion, it is possible to advantageously suppress or prevent the transmission of external forces transmitted from the electric wire to the terminal side from the metal retainer. Moreover, by cleverly utilizing the outer circumferential surface of the second fastening portion which exhibits external force blocking performance that suppresses the transmission of external forces transmitted from the electric wire to the terminal side, it is possible to provide a abutment portion that is capable of abutting against the abutted portion provided on the fixed wall portion of the mating connector. This makes it possible to provide a connector with a small number of parts that prevents displacement of the connector housing in the rotational direction of the screw portion, while also offering excellent performance in blocking external forces transmitted from the electric wires.

[0018] (6) In (4) above, it is preferable that the opposing surfaces of the assembly portion and the assembled portion have a second tolerance-absorbing gap that widens in the bolt-fastening direction of the second fastening portion, and that the metal retainer is assembled so as to be displaceable relative to the shield shell by the amount of the second tolerance-absorbing gap. A second tolerance-absorbing gap that widens in the bolt-fastening direction of the second fastening portion is provided between the opposing surfaces of the assembly portion and the assembled portion, and the metal retainer is assembled so as to be displaceable relative to the shield shell by the amount of the second tolerance-absorbing gap. This allows the tolerance to be absorbed by the second tolerance-absorbing gap when connecting the second bolt-fastening portion to the mating side after the connector has been fitted to the mating connector by the rotation of the screw portion and fastened at the first bolt-fastening portion, and thus it is possible to advantageously fasten the bolt of the metal retainer to the mating side.

[0019] The connector unit disclosed herein is (7) A connector unit in which a connector and a mating connector are mated, wherein the connector is the connector described in any one of (1) to (6) above, and the mating connector has a mating threaded portion into which the threaded portion is screwed, and a contacted portion into which the contact portion can contact. By employing the connector according to the present disclosure, a connector unit can be provided that can achieve any one of the effects of (1) to (6) above.

[0020] <Details of the embodiments of this disclosure> Specific examples of the connectors of this disclosure are described below with reference to the drawings. However, this disclosure is not limited to these examples and is intended to include all modifications within the meaning and scope of the claims as provided by the claims.

[0021] <Embodiment 1> Hereinafter, the connector unit 10 of Embodiment 1 of this disclosure will be described with reference to Figures 1 to 13. The connector unit 10 is composed of a connector 12 and a mating connector 14 that are mated together. The connector 12 is equipped with terminals 16, and the mating connector 14 is equipped with mating terminals 18. When terminals 16 and mating terminals 18 come into contact with each other, the connector 12 and the mating connector 14 in the connector unit 10 become electrically conductive. The connector unit 10 can be positioned in any orientation, but in the following description, "up" refers to the top in Figure 2, "down" refers to the bottom in Figure 2, "front" refers to the left in Figure 3, "rear" refers to the right in Figure 3, "left" refers to the left in Figure 2, and "right" refers to the right in Figure 2. In addition, for multiple identical components, reference numerals may be assigned to only some of the components, while the reference numerals for other components may be omitted.

[0022] <Connector 12> The connector 12 includes a connector housing 22 having a wire outlet 20, a terminal 16 housed in the connector housing 22, and a wire 24 connected to the terminal 16 and drawn out from the wire outlet 20 to the outside of the connector housing 22. The connector 12 also includes a threaded portion 26 that screws into a mating threaded portion 30 (described later) provided on the mating connector 14, and generates a mating force to the mating connector 14 by the axial force acting between the connector 12 and the mating threaded portion 30, and a contact portion 28 that can contact a contacted portion 32 (described later) provided on the mating connector 14. In Embodiment 1, a pair of terminals 16, 16 are provided, and each terminal 16 is housed in the connector housing 22. As shown in Figure 2, these pair of terminals 16, 16 and the pair of connector housings 22, 22 are arranged to be separated from each other in the left-right direction.

[0023] <Mother connector 14> As shown in Figure 13 and other figures, the mating connector 14 includes a mating terminal 18 connected to terminal 16, a mating threaded portion 30 into which the threaded portion 26 on the connector 12 side is screwed, and a contacted portion 32 into which the contact portion 28 on the connector 12 side can contact. The mating connector 14 also includes a mating housing 34 that houses and holds the mating terminal 18, and a metal fixing wall portion 36 to which the mating housing 34 is fixed. In Embodiment 1, since the connector 12 is provided with a pair of terminals 16, 16, the mating connector 14 is provided with a pair of mating terminals 18, 18, and these mating terminals 18 are arranged to be separated from each other in the left-right direction. The mating housing 34 that holds these mating terminals 18 is fixed to a fixing wall portion 36 which is made of the housing of equipment (not shown). In the mating housing 34 fixed to the fixing wall portion 36, each mating terminal 18 is held in a state that protrudes backward.

[0024] In Embodiment 1, each mating terminal 18 is a pin terminal, and each mating terminal 18 is equipped with a columnar connecting portion 38. Furthermore, each mating terminal 18 is provided with a bolt insertion hole 40 at its base end (front end) (see Figures 1, 3, 6, etc.), and each mating terminal 18 is fixed to a terminal portion of equipment (not shown) by a bolt (not shown) inserted through the bolt insertion hole 40, for example.

[0025] Each of these mating terminals 18 is fixedly held in the mating housing 34. Although the method of fixing each mating terminal 18 to the mating housing 34 is not limited, in Embodiment 1, the mating housing 34 is formed as an integrally molded product equipped with each mating terminal 18 by inserting each mating terminal 18 into the molding cavity during the molding of the mating housing 34. As shown in Figure 13, etc., this mating housing 34 is integrally provided with a pair of legs 42, 42 that protrude downward, and the mating housing 34 to which each mating terminal 18 is fixed is fixed to the fixing wall portion 36 by bolts 44 inserted through each leg portion 42. In addition, an annular waterproof rubber 46 is attached to the outer circumferential surface of the mating housing 34, in the portion that is inserted into the insertion hole 50 in the fixing wall portion 36, which will be described later.

[0026] The fixed wall portion 36 is composed of the housing of equipment (not shown) and extends in a flat plate shape in plan view. For convenience, the fixed wall portion 36 shown in each figure is shown as a rectangular plate portion 48, with the main part cut out in a rectangular shape. An insertion hole 50 is formed in the upper part of the rectangular plate portion 48 through which the mating housing 34 is inserted. In addition, a first bolt fixing portion 52 is provided in the center in the left-right direction of the rectangular plate portion 48 below the insertion hole 50, into which the threaded portion 26 of the first bolt 108 (described later) is inserted. The first bolt fixing portion 52 is a roughly cylindrical portion that opens to the rear and has a predetermined front-to-back dimension, and a mating threaded portion 30 is formed on its inner circumferential surface, which is a female thread that screws into the threaded portion 26, which is a male thread.

[0027] Furthermore, in the rectangular plate portion 48, a second bolt fixing portion 54 is provided in the left-right center of the portion below the first bolt fixing portion 52, into which the male thread 188 of the second bolt 184, which will be described later, is inserted. The second bolt fixing portion 54 is a substantially cylindrical portion that opens to the rear, has a predetermined front-to-back dimension, and has a female thread 56 formed on its inner circumferential surface. The first bolt fixing portion 52 and the second bolt fixing portion 54 are provided separated from each other by a predetermined distance in the vertical direction.

[0028] In particular, on the rear end surface of the rectangular plate portion 48, a recess 58 opening to the rear is provided around the opening of the second bolt fixing portion 54, and the second bolt fixing portion 54 is provided opening approximately in the center of the bottom surface 59 of the recess 58. This recess 58 is formed with a larger opening area than the opening of the second bolt fixing portion 54, and in Embodiment 1, the recess 58 is formed with an approximately oval shape in which the vertical dimension is larger than the horizontal dimension. As will be described later, the contact portion 32 that the contact portion 28 on the connector 12 side can contact is formed including the inner circumferential surface of this recess 58. In addition, the bottom surface 59 of the recess 58 is an annular flat surface having a predetermined radial dimension.

[0029] <Terminal 16> In Embodiment 1, the mating terminal 18 is a pin terminal, and the specific structure of terminal 16 is not limited as long as it has a cylindrical connecting portion 60 into which the columnar connecting portion 38 of the mating terminal 18 is press-fitted, but for example, a structure such as the female terminal (10) described in Japanese Patent Application Publication No. 2021-28899 can be adopted. More specifically, terminal 16 in Embodiment 1 is composed of a terminal body 62 and a clip spring 64 as an elastic member attached to the tip (upper end) of the terminal body 62. A wire fixing portion 66 is provided at the base end (lower end) of each terminal body 62 to which each electric wire 24 is fixed.

[0030] Each electric wire 24 is an insulated electric wire, consisting of a core wire 68 and an insulating coating 70 made of synthetic resin that covers the core wire 68 over substantially its entire length. At the end of each electric wire 24, the insulating coating 70 is stripped off, exposing the core wire 68, and the exposed core wire 68 is fixed to the electric wire fixing portion 66 of each terminal body 62, thereby connecting each terminal body 62 to each electric wire 24. The method of fixing the electric wire fixing portion 66 to the core wire 68 is not limited and may be by adhesive, welding, or crimping with a crimping piece.

[0031] <Connector Housing 22> As shown in Figures 2 and 3, the connector housing 22 has a substantially rectangular cylindrical terminal housing portion 72 that accommodates the upper end portion of each electric wire 24 and each terminal 16 fixed to the end of each electric wire 24. As described above, in Embodiment 1, a pair of connector housings 22, 22 are provided, and each connector housing 22 has a terminal housing portion 72. Each connector housing 22 (each terminal housing portion 72) is separated from each other in the left-right direction and extends in the vertical direction, opening downwards. Each electric wire 24 housed in each terminal housing portion 72 is pulled out to the outside space through the lower opening of each connector housing 22 (each terminal housing portion 72), and the lower opening of each connector housing 22 constitutes an electric wire outlet 20 from which each electric wire 24 is pulled out. In other words, each of the two connector housings 22, 22 houses a terminal 16, and two wires 24, 24 connected to the two terminals 16 are led out of the connector housing 22 from each wire outlet 20.

[0032] In Embodiment 1, as shown in Figure 3, each connector housing 22 consists of a connector housing body 74 and a connector housing cover 76 that is assembled to the connector housing body 74. Specifically, the upper part of the front wall of the connector housing body 74 is provided with a window that penetrates in the thickness direction (front-to-back direction), and the connector housing cover 76 is assembled to cover this window. Furthermore, in the connector housing cover 76, at a position corresponding to the cylindrical connecting portion 60 of the terminal 16, an insertion hole 78 is formed through which the columnar connecting portion 38 of the mating terminal 18 is inserted when connecting the connector 12 and the mating connector 14, which will be described later.

[0033] <Shield Shell 80> Furthermore, the connector 12 includes a metal shield shell 80 that covers each connector housing 22 and connects to each connector housing 22. The method of fixing each connector housing 22 to the shield shell 80 is not limited, but in Embodiment 1, as will be described later, each connector housing 22 is inserted into the shield shell 80 through a lower opening. Then, for example, each connector housing 22 is connected to and fixed to the shield shell 80 by the fitting of protrusions and indentations provided on the outer surface of each connector housing 22 and the inner surface of the shield shell 80.

[0034] As described above, each wire 24 that is pulled downward from the wire outlet 20 of each connector housing 22 has an annular waterproof rubber 82 fitted to it, and each waterproof rubber 82 is inserted into the shield shell 80 through the lower opening. Below each waterproof rubber 82, a metal retainer 128, which will be described later, is provided to hold each wire 24 pulled out from each wire outlet 20. In Embodiment 1, the metal retainer 128 is assembled to the lower opening of the shield shell 80, and the metal retainer 128 also prevents each waterproof rubber 82 from falling off.

[0035] The shield shell 80 is shaped to cover substantially the entirety of the pair of connector housings 22, 22. Specifically, the shield shell 80 includes a rear wall portion 84 that covers the rear of each connector housing 22, a front wall portion 86 that covers the front of each connector housing 22, a left wall portion 88 that covers the left connector housing 22 from the left, a right wall portion 90 that covers the right connector housing 22 from the right, and an upper wall portion 92 that covers the top of each connector housing 22. The shield shell 80 also includes a partition portion 94 provided between the left and right connector housings 22 to divide the internal space of the shield shell 80 in the left-right direction.

[0036] The upper portion of the front wall 86 of the shield shell 80 has a through-window 96 that penetrates the front wall 86 in the front-rear direction, and an inner cylindrical portion 98 and an outer cylindrical portion 100 are provided around the periphery of the through-window 96. A front retainer 104 having a through-hole 102 is assembled to the inner cylindrical portion 98. As a result, when connecting the connector 12 and the mating connector 14, the columnar connecting portion 38 of each mating terminal 18 is press-fitted into the cylindrical connecting portion 60 of each terminal 16 through the through-hole 102, the through-window 96, and the insertion hole 78. An annular waterproof rubber 106 is attached to the inner cylindrical portion 98 by being fitted onto it.

[0037] Here, in the partition portion 94 of the shield shell 80, below the lower portion of the outer cylindrical portion 100, a first bolt insertion hole 110 is formed that penetrates in the front-rear direction, through which a first bolt 108 having a threaded portion 26 is inserted. By inserting the first bolt 108 through this first bolt insertion hole 110 and fixing it to the first bolt fixing portion 52 on the fixed wall portion 36, which is the mating side, the shield shell 80 is bolted to the fixed wall portion 36. Therefore, upon fastening of the first bolt 108, the portion of the shield shell 80, particularly the area around the first bolt insertion hole 110, is fixed to the fixed wall portion 36. Thus, the first fastening portion 111 in the shield shell 80, through which the threaded portion 26 (first bolt 108) is inserted and bolted to the fixed wall portion 36, is composed of the area around the first bolt insertion hole 110. In other words, a first bolt insertion hole 110 is formed in the shield shell 80, penetrating the first fastening portion 111 in the front-rear direction, and the first fastening portion 111 has a first bolt insertion hole 110 through which a first bolt 108 is inserted.

[0038] In Embodiment 1, a contact portion 112 is provided that protrudes forward from the front wall portion 86 at the position where the first bolt insertion hole 110 is formed, and the contact portion 112 has a substantially rectangular outer surface shape. A substantially circular recess 114 is formed opening forward at approximately the center of the contact portion 112. The protruding tip surface (front end surface) of this contact portion 112 is a substantially annular flat surface 116.

[0039] Furthermore, an annular ring mounting groove 118 opening to the outer circumference is provided in the longitudinal middle portion of the first bolt 108, and in Embodiment 1, a C-ring 120 is mounted in this ring mounting groove 118. When the C-ring 120 is mounted on the first bolt 108, the C-ring 120 protrudes outward from the outer surface of the first bolt 108 in a substantially annular shape with a predetermined diameter and width. This allows the first bolt 108 to be displaced in the front-rear direction relative to the first bolt insertion hole 110, while preventing the first bolt 108 from falling out of the first bolt insertion hole 110. In addition, the projection dimension of the C-ring 120 outward from the outer surface of the first bolt 108 is smaller than the radial width dimension of the recess 114. As a result, when the first bolt 108 is displaced backward relative to the first bolt insertion hole 110, the rear end of the C-ring 120 abuts against the bottom surface of the recess 114, thereby limiting the displacement of the first bolt 108 relative to the first bolt insertion hole 110. In Embodiment 1, the first bolt 108 has a male screw portion 26 located on the tip side (front end side) of the mounting position of the C-ring 120 (the position where the ring mounting groove 118 is formed).

[0040] In particular, in Embodiment 1, the tightening force of the first bolt 108 when bolting the first fastening portion 111 to the fixed wall portion 36, which is the mating side, is used to press-fit the columnar connecting portion 38 of each mating terminal 18 into the cylindrical connecting portion 60 of each terminal 16. That is, the connector 12 of Embodiment 1 is a so-called bolt-assist type connector, and by bolting the first fastening portion 111 to the fixed wall portion 36, which is the mating side, each terminal 16 is fitted into each mating terminal 18. Furthermore, since the first bolt 108 is displaceable relative to the first bolt insertion hole 110 and cannot fall out, the first bolt 108 can be displaced backward when it comes into contact with the opening of the first bolt fixing portion 52. Therefore, the portion of the first bolt 108 that protrudes forward may be less likely to interfere with the press-fitting operation of each terminal 16 into each mating terminal 18. Furthermore, with the first bolt 108 partially screwed into the first bolt fixing portion 52, the press-fitting operation of each terminal 16 into each mating terminal 18 can be started, thereby reducing the risk of damage to the opening of the first bolt fixing portion 52 during the press-fitting operation.

[0041] <Assembly part 122> Here, the lower ends of the rear wall portion 84 and the front wall portion 86 of the shield shell 80 are provided with a part to be assembled 122, which is combined with each assembly portion 150 of the metal retainer 128, described later. Specifically, at the lower end portions of the rear wall portion 84 and the front wall portion 86, a concave housing portion 124 is formed in the center in the left-right direction, opening outward in the front-rear direction, and a substantially rectangular block-shaped assembly projection 126 is provided at the lower end of the bottom surface of the housing portion 124, projecting outward in the front-rear direction. As will be described later, the first holding portion 130 and the second holding portion 132 are superimposed on the lower end of the shield shell 80 from the front-rear direction outward, so that each assembly portion 150 is housed in each housing portion 124, and each assembly projection 126 is inserted into each assembly area 156. Therefore, in Embodiment 1, the part to be assembled 122, which is combined with the assembly portion 150, is formed including the housing portion 124 and the assembly projection 126. These housing sections 124 and assembly protrusions 126 each have predetermined dimensions in the vertical, horizontal, and front-to-back directions.

[0042] <Metal retainer 128> Furthermore, the connector 12 is connected to each connector housing 22 and further includes a metal retainer 128 that holds each wire 24 drawn out from each wire outlet 20. In Embodiment 1, the metal retainer 128 is connected to each connector housing 22 via a shield shell 80. The metal retainer 128 has a rear first holding portion 130 and a front second holding portion 132 that clamp and hold each wire 24 from both sides perpendicular to the axis of each wire 24 (both front and rear sides) and fix them together. The metal retainer 128 also includes a second fastening portion 134 that is bolted to the fixed wall portion 36 on the mating side by a second bolt 184, which will be described later.

[0043] As shown in Figures 11 and 12, the first retaining portion 130 is provided with a roughly rectangular block-shaped first main body portion 136, in which the left-right dimension is larger than the vertical dimension when viewed from the front or back. A groove 138 with a roughly semicircular cross-section that opens forward is formed on the front surface of the first main body portion 136. This groove 138 extends in the vertical direction, and when the metal retainer 128 is fixed to each electric wire 24, the inner circumferential surface of the groove 138 is in close contact with the outer circumferential surface of each electric wire 24 (the outer circumferential surface of the insulating coating 70). In Embodiment 1, since the pair of electric wires 24, 24 are spaced apart from each other in the left-right direction, the first retaining portion 130 is provided with a pair of grooves 138, 138 spaced apart from each other in the left-right direction. The pair of grooves 138, 138 are connected by a connecting portion 140 in the left-right central portion of the first main body portion 136. Each groove 138 has a larger vertical dimension than the first main body portion 136, and the semi-cylindrical portion constituting each groove 138 is integrally formed, protruding downward from the first main body portion 136.

[0044] Furthermore, in Embodiment 1, as also shown in Figure 3, a pressing projection 142 is provided on the upper portion of the inner circumferential surface of each groove 138, projecting inward (radially inward). Each pressing projection 142 is formed with predetermined vertical and circumferential dimensions.

[0045] Furthermore, a rear insertion hole 144 is formed in the left-right central portion (connecting portion 140) of the first main body portion 136, through which the second bolt 184, described later, is inserted. The rear insertion hole 144 penetrates the connecting portion 140 in the front-rear direction and, as shown in Figure 12, has an inner circumferential surface shape that is approximately oval, with the vertical dimension being larger than the left-right dimension. In Figure 12, the second bolt 184 inserted into the rear insertion hole 144 is indicated by a dashed line. The inner diameter of the rear insertion hole 144 is larger than the outer diameter of the second bolt 184, and the gap between the inner circumferential surface of the rear insertion hole 144 and the outer circumferential surface of the second bolt 184 is the approximately annular rear gap 146. The radial width dimension of the rear gap 146 is larger in the vertical direction β (see Figure 12) than in the left-right direction α (see Figure 12). Furthermore, a circular recess 148 opening to the rear is formed on the rear surface of the first main body portion 136, and the bottom surface of the circular recess 148 is in communication with the rear insertion hole 144. When the second bolt 184 is inserted through the rear insertion hole 144, the head 185 of the second bolt 184 is accommodated in the circular recess 148.

[0046] <Assembly section 150> Furthermore, at the rear end portion of the first main body 136, an assembly portion 150 is provided projecting upward from the center in the left-right direction, which engages with the assembly portion 122 of the shield shell 80. The metal retainer 128 is then assembled to the shield shell 80 by the assembly portion 150 and the assembly portion 122 engaging together. In Embodiment 1, the assembly portion 150 has a substantially rectangular frame shape and includes upper projections 152 on both the left and right sides that project upward from the first main body 136, and connecting portions 154 that connect the protruding ends (upper ends) of each upper projection 152. As a result, an assembly region 156, which is substantially rectangular in a front view, is formed in the area enclosed by the first main body 136, each upper projection 152, and the connecting portion 154, and the left-right dimension of the assembly region 156 is larger than the vertical dimension.

[0047] Furthermore, on the rear surface of the first main body portion 136, locking projections 158 are provided on both the left and right sides of the circular recess 148. In addition, rear fixing portions 160 are provided at both ends of the first main body portion 136 in the left and right directions, that is, outside the left and right directions of each groove 138, to which fixing bolts 178, described later, are fixed. Each rear fixing portion 160 is substantially cylindrical with an opening to the front and protrudes outward in the left and right directions from both ends of the first main body portion 136. Female threads are formed on the inner circumferential surface of each of these rear fixing portions 160 to engage with the male threads of the fixing bolts 178.

[0048] The second retaining portion 132 has substantially the same shape as the first retaining portion 130 overall, and includes a second main body portion 162 which is substantially rectangular in plan view. A pair of grooves 138, 138 are provided on both the left and right sides of the rear surface of the second main body portion 162, and these grooves 138 are connected by a connecting portion 140. In Embodiment 1, the second retaining portion 132 is also provided with pressing protrusions 142 that project inward (radially inward) on the upper portion of the inner circumferential surface of each groove 138.

[0049] Furthermore, a front insertion hole 164 is formed in the left-right central portion (connecting portion 140) of the second main body portion 162, through which the second bolt 184, described later, is inserted. In particular, the connecting portion 140 of the second main body portion 162 is integrally provided with a cylindrical portion 166 as a convex portion that protrudes toward the fixed wall portion 36 located forward in the front-rear direction, which is the axial direction of the screw portion 26. Furthermore, the front insertion hole 164 is formed by penetrating these connecting portion 140 and cylindrical portion 166 in the front-rear direction. The front insertion hole 164 has the same inner circumferential surface shape as the rear insertion hole 144, and is an approximately oval shape in which the vertical dimension is larger than the left-right dimension. As a result, the gap between the inner circumferential surface of the front insertion hole 164 and the outer circumferential surface of the second bolt 184 is an approximately annular front gap 168, and the radial width dimension of the front gap 168 is larger in the vertical dimension β than in the left-right dimension α. Furthermore, in Embodiment 1, the protruding tip surface (front end surface) of the cylindrical portion 166 is a substantially annular flat surface 170.

[0050] Furthermore, in the front end portion of the second main body 162, an assembly portion 150 is provided in the central part in the left-right direction, similar to the first holding portion 130. That is, in the second holding portion 132 as well, the assembly portion 150 includes upper protrusions 152 on both the left and right sides, and connecting portions 154 that connect the protruding ends (upper ends) of each upper protrusion 152. The assembly region 156, which is roughly rectangular in shape when viewed from the front, is formed by the region enclosed by the second main body 162, each upper protrusion 152, and the connecting portion 154.

[0051] Furthermore, screw fixing portions 172 are provided on both the left and right sides of the front surface of the second main body portion 162, flanking the cylindrical portion 166, to which fixing screws 204, described later, are fastened. Front fixing portions 174 are provided on both the left and right ends of the second main body portion 162, that is, on the left and right sides outward from each groove 138, to which fixing bolts 178, described later, are fixed. Each front fixing portion 174 has a bolt insertion hole formed through it in the front-to-back direction through which the fixing bolt 178 is inserted, and each front fixing portion 174 protrudes outward in the left and right direction from both the left and right ends of the second main body portion 162. On the outer circumferential surface of the second main body portion 162, at both the left and right ends, there are receiving recesses 176 that accommodate the heads of each fixing bolt 178.

[0052] The metal retainer 128 is constructed by overlapping the first retaining portion 130 and the second retaining portion 132, which are shaped as described above, with each electric wire 24 sandwiched between them from both the front and rear sides, and then bolting them together with fixing bolts 178. Specifically, the rear fixing portions 160 of the first retaining portion 130 and the front fixing portions 174 of the second retaining portion 132 are overlapped with each other in the front and rear direction, and the fixing bolts 178 are inserted through each front fixing portion 174 and fastened to each rear fixing portion 160, thereby fixing the first retaining portion 130 and the second retaining portion 132 together. As a result, a retainer bolt fixing portion 180 is constructed, which includes each rear fixing portion 160 and each front fixing portion 174, and to which each fixing bolt 178 is fixed.

[0053] Furthermore, by fixing the first retaining portion 130 and the second retaining portion 132 to each other in this manner, the circumferential end faces of each groove 138 in the first retaining portion 130 and the circumferential end faces of each groove 138 in the second retaining portion 132 abut against each other in the front-rear direction, and the grooves 138 on both the front and rear sides form wire housing holes 182 that clamp the electric wires 24. In other words, by fixing the first retaining portion 130 and the second retaining portion 132 to each other, two wire housing holes 182, 182 that clamp the two electric wires 24, 24 are arranged in parallel in the left-right direction. Then, in the parallel direction (left-right direction) of these two wire housing holes 182, 182, retainer bolt fixing portions 180 are provided on both sides of each wire housing hole 182.

[0054] Here, the first holding portion 130 and the second holding portion 132 are fixed in a state where they are clamping each electric wire 24, so that the pressing protrusions 142 in the first and second holding portions 130 and 132 press against each insulating coating 70 of each electric wire 24, causing elastic deformation of the front and rear sides of each insulating coating 70. In Figure 6, the insulating coatings 70 before being pressed and elastically deformed by the pressing protrusions 142 are shown by dashed lines. Each insulating coating 70 that has been elastically deformed by each pressing protrusion 142 may be deformed to bulge outwards on both sides in the left and right directions, and each insulating coating 70 that has been deformed to bulge outwards on both sides in the left and right directions may be in close contact with the inner circumferential surfaces on both sides of each electric wire housing hole 182.

[0055] Furthermore, by fixing the first retaining portion 130 and the second retaining portion 132 to each other, the rear insertion hole 144 in the first retaining portion 130 and the front insertion hole 164 in the second retaining portion 132 communicate with each other in the front-rear direction, forming a second bolt insertion hole 186 through which the second bolt 184 is inserted. The second bolt 184 is then inserted through this second bolt insertion hole 186 and fixed to the second bolt fixing portion 54 on the fixing wall portion 36, which is the mating side, thereby bolting the metal retainer 128 to the fixing wall portion 36. In other words, the tip side (front end side) of the second bolt 184 has a male screw 188 that screws into the female screw 56 on the second bolt fixing portion 54. Therefore, when the second bolt 184 is fastened, the metal retainer 128, in particular the part around the second bolt insertion hole 186, is fixed to the fixing wall portion 36. Therefore, the second fastening portion 134 of the metal retainer 128, which is bolted to the fixed wall portion 36, is composed of the portion surrounding the second bolt insertion hole 186, for example, the connecting portion 140 of the first holding portion 130, the connecting portion 140 of the second holding portion 132, the cylindrical portion 166, etc. In other words, the second bolt insertion hole 186 is formed by penetrating the second fastening portion 134 of the metal retainer 128 in the front-rear direction.

[0056] When the second bolt 184 is inserted into the second bolt insertion hole 186 to fasten the second fastening portion 134 to the fixed wall portion 36, the protruding tip (front end) of the cylindrical portion 166 of the second holding portion 132 enters into the recess 58 of the fixed wall portion 36, so that the flat surface 170, which is the protruding tip surface of the cylindrical portion 166, and the bottom surface 59 of the recess 58 overlap each other. Here, the entry of the protruding tip of the cylindrical portion 166 into the recess 58 is achieved by screwing the threaded portion 26 of the first bolt 108 into the mating threaded portion 30 of the first bolt fixing portion 52. As the cylindrical portion 166 enters the recess 58, rotational displacement of each connector housing 22, that is, the shield shell 80 and metal retainer 128 connected to each connector housing 22, due to the rotation of the first bolt 108 (threaded portion 26), is prevented by the contact between the inner circumferential surface of the recess 58 (contacted portion 32) and the outer circumferential surface of the cylindrical portion 166. In other words, the contact portion 28 that can contact the contacted portion 32 is formed by the outer circumferential surface of the cylindrical portion 166 that constitutes the second fastening portion 134. This contact portion 28 is provided on the metal retainer 128 connected to the lower end of the shield shell 80 and is located on the side of each electric wire 24 than the first fastening portion 111 (essentially the threaded portion 26) which is provided in the upper and lower middle part of the shield shell 80.

[0057] <First tolerance absorption gap 190, 192> When the second bolt 184 is inserted through the second bolt insertion hole 186, the rear gap 146 and the front gap 168 are in communication with each other in the front-rear direction, and a roughly annular or roughly cylindrical first tolerance absorption gap 190 is formed between the opposing surfaces of the inner circumferential surface of the second bolt insertion hole 186 and the outer circumferential surface of the second bolt 184. In other words, in Embodiment 1, the second bolt insertion hole 186 has the first tolerance absorption gap 190. The direction in which this first tolerance absorption gap 190 expands is the first direction, and in Embodiment 1, the first direction is the direction (left-right direction and up-down direction) perpendicular to the fastening direction of the second bolt 184. As a result, when fixing the second bolt 184 to the second bolt fixing part 54, even if the second bolt insertion hole 186 and the second bolt fixing part 54 are misaligned, the tolerance can be absorbed by displacing the second bolt 184 within the first tolerance absorption gap 190. In particular, as mentioned above, the first tolerance absorption gap 190 (rear gap 146 and front gap 168) has a larger radial width dimension β in the vertical direction compared to the radial width dimension α in the horizontal direction, so tolerances in the vertical direction can be absorbed more effectively than tolerances in the horizontal direction.

[0058] Furthermore, as described above, when the metal retainer 128 is assembled to the shield shell 80, the assembly portions 150 on both the front and rear sides of the metal retainer 128 and the assembled portions 122 on both the front and rear sides of the shield shell 80 are combined. Specifically, each assembly projection 126 is inserted into the assembly area 156 of each assembly portion 150. Here, each assembly portion 150 (including the assembly area 156) has predetermined dimensions in the up / down, left / right, and front / back directions.

[0059] In other words, as shown in Figure 4, the vertical separation distance D1 between the upper inner surface of the housing portion 124 and the assembly projection 126 is made larger than the vertical dimension D2 of the connecting portion 154 in the assembly portion 150. As a result, when each assembly portion 150 and each assembled portion 122 are combined and each assembly projection 126 is inserted into each assembly region 156, a gap of a predetermined size A1 or A2 (see Figure 4 in both cases) is formed vertically between the opposing surfaces 191 of the assembly portion 150 and the assembled portion 122 (between the opposing surfaces of the upper inner surface 124a of the housing portion 124 and the upper end surface 154a of the connecting portion 154, or between the opposing surfaces of the lower end surface 154b of the connecting portion 154 and the upper end surface 126a of the assembly projection 126). This gap is the first tolerance-absorbing gap 192 between the opposing surfaces of each assembly part 150 and each assembled part 122.

[0060] Furthermore, as shown in the enlarged view on the left side of Figure 5, on either the left or right side, the lateral separation distance D3 between the left-right inner surface of the housing portion 124 (for example, the left inner surface) and the assembly projection 126 is made larger than the lateral dimension D4 of the upward projection 152 of the assembly portion 150. As a result, when each assembly portion 150 and each assembled portion 122 are combined and each assembly projection 126 is inserted into each assembly area 156, a gap of a predetermined size B1 or B2 (see Figure 5 in both cases) is formed between the opposing surfaces 191 of the assembly portion 150 and the assembled portion 122 (between the opposing surfaces of the left-right outward inner surface 124b of the housing portion 124 and the left-right outer surface 152a of the upward projection 152, or between the opposing surfaces of the left-right inner surface 152b of the upward projection 152 and the left-right outer surface 126b of the assembly projection 126). This gap is also the first tolerance absorption gap 192 between the opposing surfaces of each assembly part 150 and each assembled part 122.

[0061] Thus, a first tolerance absorption gap 192 is provided between each assembly part 150 and each assembled part 122, extending in a first direction (vertical and horizontal) which is the same direction as the first tolerance absorption gap 190 between the second bolt 184 and the second bolt insertion hole 186. As a result, when each assembly part 150 and each assembled part 122 are combined and the metal retainer 128 is assembled to the shield shell 80, in particular, before the cylindrical part 166 of the metal retainer 128 enters the recess 58 of the fixed wall part 36, the assembly projection 126 is displaceable in the vertical and horizontal directions within the assembly region 156. And, by the amount by which the assembly projection 126 is displaceable within the assembly region 156, for example by the size of the gap A2 in the vertical direction, or by the size of the gap B2 in the horizontal direction, the metal retainer 128 is displaceable in the vertical and / or horizontal directions relative to the shield shell 80. Therefore, the metal retainer 128 is assembled so as to be displaceable relative to the shield shell 80 by the amount of the first tolerance absorption gap 192.

[0062] Furthermore, after the cylindrical portion 166 enters the recess 58 during mating between the connector 12 and the mating connector 14, the displacement of the metal retainer 128 relative to the shield shell 80 is also limited, for example, by the contact between the inner circumferential surface of the recess 58 (contact portion 32) and the outer circumferential surface of the cylindrical portion 166 (contact portion 28). That is, as shown in Figure 4, when the cylindrical portion 166 enters the recess 58, the metal retainer 128 may be able to displace relative to the shield shell 80 by the amount of the vertical gap A3 or A4 between the contact portion 32 and the contact portion 28. Specifically, when the metal retainer 128 is displaced in the direction approaching (upward) relative to the shield shell 80, it is able to displace by the smaller of the gaps A1 and A3. Similarly, when the metal retainer 128 is displaced in the direction of separation (downward) from the shield shell 80, it is allowed to be displaced by the smaller of the two gaps A2 and A4.

[0063] Furthermore, in the left-right direction, the displacement of the metal retainer 128 relative to the shield shell 80 may also be limited by contact between, for example, the inner circumferential surface of the recess 58 (contact portion 32) and the outer circumferential surface of the cylindrical portion 166 (contact portion 28). That is, as shown in Figure 6, when the cylindrical portion 166 is inserted into the recess 58, gaps B3 and B4 are formed in the left-right direction between the contact portion 32 and the contact portion 28. When the metal retainer 128 is displaced to the left relative to the shield shell 80, it is only able to displace by the smallest amount of the gaps B1, B2, and B3. Similarly, when the metal retainer 128 is displaced to the right relative to the shield shell 80, it is only able to displace by the smallest amount of the gaps B1, B2, and B4.

[0064] Furthermore, by making the gaps (B3 and B4) between the contacted portion 32 and the contact portion 28 in the left-right direction sufficiently small (approaching zero), it is possible to make the metal retainer 128 virtually immobile in the left-right direction relative to the shield shell 80 when the cylindrical portion 166 is inserted into the recess 58. In this way, by making the metal retainer 128 immobile in the left-right direction relative to the shield shell 80, the rotational displacement of each connector housing 22 (and the shield shell 80 and metal retainer 128 connected to each connector housing 22) due to the rotation of the first bolt 108 (threaded portion 26) can be suppressed more effectively.

[0065] <Second tolerance absorption gap 194> Furthermore, as shown in the enlarged view on the right in Figure 5, the depth dimension (front-to-back dimension) D5 of the housing portion 124 is made larger than the front-to-back dimension D6 of the assembly portion 150 (upper projection portion 152 and connecting portion 154). As a result, when each assembly portion 150 and each assembled portion 122 are combined and each assembly projection portion 126 is inserted into each assembly area 156, a gap of a predetermined size C (see Figure 5) in the front-to-back direction is formed between the opposing surfaces 193 of the assembly portion 150 and the assembled portion 122 (between the opposing surfaces of the bottom surface 124c of the housing portion 124 and the front-to-back inner surfaces 152c, 154c of the upper projection portion 152 and connecting portion 154). This gap is the second tolerance absorption gap 194 that widens in the bolt fastening direction (front-to-back direction) of the second bolt 184 in the second fastening portion 134.

[0066] As a result, when each assembly part 150 and each assembled part 122 are combined and the metal retainer 128 is assembled to the shield shell 80, in particular, before the cylindrical part 166 of the metal retainer 128 fits into the recess 58 of the fixed wall part 36, the metal retainer 128 can be displaced in the front-rear direction relative to the shield shell 80 by the amount C of the second tolerance absorption gap 194. Therefore, the metal retainer 128 is assembled so that it can be displaced relative to the shield shell 80 by the amount of the second tolerance absorption gap 194.

[0067] Furthermore, after the cylindrical portion 166 enters the recess 58 during mating between the connector 12 and the mating connector 14, the displacement of the metal retainer 128 in the front-rear direction relative to the shield shell 80 is also limited, for example, by the contact between the bottom surface 59 of the recess 58 and the protruding tip surface (flat surface 170) of the cylindrical portion 166. In other words, by allowing the metal retainer 128 to be displaceable in the front-rear direction relative to the shield shell 80 when the connector 12 and the mating connector 14 are mated, the bottom surface 59 of the recess 58 and the protruding tip surface (flat surface 170) of the cylindrical portion 166 can be made to contact more reliably, as shown in Figures 4 and 6. This allows a shield path to be formed even at the point where the bottom surface 59 of the recess 58 and the protruding tip surface (flat surface 170) of the cylindrical portion 166 contact, thereby improving shielding performance. In particular, in Embodiment 1, since both the bottom surface 59 and the flat surface 170 are flat, a sufficiently large contact area can be secured, thereby further improving the shielding performance.

[0068] Furthermore, in Embodiment 1, the lower portion of the metal retainer 128 is covered by a metal shield bracket 196. The shield bracket 196 has a stepped cylindrical wall portion 198, and locking frames 200 projecting upward are provided on both the left and right sides of the rear end of the cylindrical wall portion 198. Also, portions projecting upward are provided on both the left and right sides of the front end of the cylindrical wall portion 198, and screw holes 202 are formed at the upwardly projecting ends. The shield bracket 196 is fixed to the metal retainer 128 by fitting the cylindrical wall portion 198 of the shield bracket 196 onto the lower portion of the metal retainer 128, engaging each locking projection 158 with each locking frame 200, and fixing the fixing screws 204 to each screw fixing portion 172 through each screw hole 202. Furthermore, a shielding member, such as a metal braided wire (not shown), which covers each electric wire 24, may be fixed to the cylindrical wall portion 198 of the shield bracket 196.

[0069] <Assembly of connector unit 10> The following describes a specific example of how to assemble the connector unit 10 by mating connector 12 with the mating connector 14. However, the assembly method of the connector unit 10 is not limited to the configuration described below.

[0070] First, the insulation coating 70 is stripped from the end of each wire 24 to expose the core wire 68, which is then fixed to the wire fixing portion 66 of each terminal body 62. At the same time, each clip spring 64 is attached to the upper end of each terminal body 62. This fixes each terminal 16 to the end of each wire 24. Then, each waterproof rubber 82 is fitted onto each wire 24.

[0071] Next, each wire 24, with each terminal 16 and each waterproof rubber 82 attached, is inserted through the lower opening of each connector housing body 74. After each terminal 16 is inserted to its predetermined position, the connector housing cover 76 is attached to the connector housing body 74, thereby fixing each terminal 16 in its predetermined position within the terminal housing portion 72 of each connector housing 22. Then, each connector housing 22 with each terminal 16 attached is inserted through the lower opening of the shield shell 80, and each connector housing 22 is connected and fixed to the shield shell 80, for example, by interlocking protrusions and recesses. In addition, the front retainer 104 is attached to the inner cylindrical portion 98 of the shield shell 80 from the front.

[0072] Next, as shown in Figure 10, the first retaining part 130 and the second retaining part 132 are positioned opposite each other in the front-to-back direction so as to sandwich each electric wire 24 extending downward from the shield shell 80 from both the front and rear sides. Then, the assembly parts 150 of the first and second retaining parts 130 and 132 are combined with each assembly part 122 of the shield shell 80, and the first main body part 136 of the first retaining part 130 and the second main body part 162 of the second retaining part 132 are overlapped. Then, the fixing bolts 178 are inserted through each front fixing part 174 and fastened to each rear fixing part 160, thereby bolting the first retaining part 130 and the second retaining part 132 to each other at each retainer bolt fixing part 180. In this way, the metal retainer 128 is assembled to the shield shell 80. Next, the electric wires 24 are inserted through the cylindrical wall portion 198 of the shield bracket 196, the lower part of the metal retainer 128 is covered with the cylindrical wall portion 198, the locking projections 158 are locked to the locking frames 200, and the fixing screws 204 are fixed to the screw fixing portions 172 via the screw holes 202.

[0073] Furthermore, the first bolt 108 is inserted from the rear into the first bolt insertion hole 110 in the shield shell 80. As a result, the front portion of the first bolt 108 protrudes forward from the shield shell 80, and the C-ring 120 is assembled to the ring mounting groove 118 of the first bolt 108 from the side (in a direction perpendicular to the front-rear direction). This completes the connector 12.

[0074] Furthermore, after integrally forming each mating terminal 18 and the mating housing 34, the mating housing 34 is inserted through the insertion hole 50 of the fixing wall portion 36, and the mating housing 34 is fixed to the fixing wall portion 36 with bolts 44. This completes the mating connector 14.

[0075] The connector 12 and the mating connector 14 assembled in this manner are positioned facing each other in the front-to-back direction, as shown in Figure 7. Then, the connector 12 and the mating connector 14 are brought closer to each other, and the threaded portion 26 of the first bolt 108 is started to be screwed into the mating threaded portion 30 of the first bolt fixing portion 52 in the fixing wall portion 36. After that, with the threaded portions 26 and the mating threaded portion 30 screwed together to a certain extent, the columnar connecting portion 38 of each mating terminal 18 is started to be press-fitted into the cylindrical connecting portion 60 of each terminal 16. Furthermore, as the screwing of the threaded portion 26 and the mating threaded portion 30 (i.e., the press-fitting of the columnar connecting portion 38 into the cylindrical connecting portion 60) progresses to a certain extent, the connector 12 and the mating connector 14 move even closer to each other, and as shown in Figure 8, the cylindrical portion 166 of the metal retainer 128 begins to enter the recess 58 in the fixing wall portion 36. In the state shown in Figure 8, the contact area between the threaded portion 26 and the mating threaded portion 30 increases, and the rotational force generated during screwing and the axial force acting between the threaded portion 26 and the mating threaded portion 30 also gradually increase. Therefore, in the state shown in Figure 8 and beyond, the rotational force generated during screwing of the threaded portion 26 and the mating threaded portion 30 may cause the connector 12 to rotate relative to the mating connector 14. Even in that case, because the cylindrical portion 166 of the metal retainer 128 is positioned within the recess 58 of the fixed wall portion 36, as shown in Figure 9, the contact portion 28 formed by the outer circumferential surface of the cylindrical portion 166 displaces in the rotational direction indicated by arrow a and comes into contact with the contacted portion 32 formed by the inner circumferential surface of the recess 58, thereby suppressing or preventing such rotational displacement. Then, by further screwing the threaded portion 26 and the mating threaded portion 30, the connector 12 and the mating connector 14 come into contact with each other, completing the tightening of the first bolt 108. At this stage, the press-fitting of the columnar connecting portion 38 into the cylindrical connecting portion 60 is complete, and the connector 12 and the mating connector 14 are electrically connected.

[0076] Furthermore, at this stage, if the second bolt insertion hole 186 in the connector 12 and the second bolt fixing portion 54 in the fixing wall portion 36 are misaligned in the vertical or horizontal direction, the first tolerance absorption gap 192 is used to displace the metal retainer 128 relative to the shield shell 80 to align the second bolt insertion hole 186 and the second bolt fixing portion 54. Moreover, at this stage, if the bottom surface 59 in the recess 58 and the flat surface 170 in the cylindrical portion 166 are separated in the front-rear direction, the second tolerance absorption gap 194 is used to displace the metal retainer 128 forward relative to the shield shell 80 to bring the bottom surface 59 and the flat surface 170 into contact. Furthermore, it is not necessary to bring the bottom surface 59 and the flat surface 170 into contact. When the second bolt 184 is fastened to the second bolt fixing portion 54, the head 185 of the second bolt 184 pushes the metal retainer 128 forward, causing the bottom surface 59 and the flat surface 170 to come into contact naturally.

[0077] Subsequently, the second bolt 184 is inserted through the second bolt insertion hole 186 in the metal retainer 128 and fixed to the second bolt fixing portion 54 in the fixing wall portion 36. This bolts the second fastening portion 134 of the metal retainer 128 to the fixing wall portion 36. As a result, the connection between the connector 12 and the mating connector 14 is completed, and the connector unit 10 is finished.

[0078] When the connection between connector 12 and the mating connector 14 is complete, as shown in Figure 4, the front end surface (flat surface 170) of the cylindrical portion 166 protruding forward from the metal retainer 128 abuts against the bottom surface 59 of the recess 58, and the front end surface (flat surface 116) of the contact portion 112 protruding forward from the shield shell 80 and the front end surface of the outer cylindrical portion 100 in the upper part of the shield shell 80 are in close contact with the rear surface of the rectangular plate portion 48 of the fixed wall portion 36 with virtually no gap. In other words, the metal components of the connector 12, namely the shield shell 80 and the metal retainer 128, and the metal component of the mating connector 14, namely the fixed wall portion 36, are in contact with each other at multiple points where they are separated. This ensures that a stable shield path is secured from the metal retainer 128 and the shield shell 80 to the fixed wall portion 36. In particular, since the overlapping surfaces of connector 12 and mating connector 14 at these contact points are both composed of flat surfaces, a sufficient contact area can be secured, thereby improving shielding performance.

[0079] In the connector unit 10 with the structure described above, in the bolt-assist type connector 12, it is necessary to screw the threaded portion 26 and the mating threaded portion 30 together in order to obtain the press-fitting force (mating force) required to press-fit each mating terminal 18 into each terminal 16. However, when the threaded portion 26 (first bolt 108) is rotated, there is a risk that each connector housing 22 (and the shield shell 80 and metal retainer 128 connected to each connector housing 22) will also be rotated relative to the mating connector 14 along with the threaded portion 26. Here, by providing a contact portion 28 and a contacted portion 32 in the connector 12 and the mating connector 14 that come into contact with each other as the threaded portion 26 rotates, further rotational displacement of each connector housing 22 can be prevented. This allows for stable screwing of the threaded portion 26 and also avoids damage to the connector 12 and the mating connector 14 due to unintentional rotational displacement of each connector housing 22.

[0080] The contact portion 28 is configured to include the outer circumferential surface of the cylindrical portion 166 as a convex portion, and the contacted portion 32 is configured to include the inner circumferential surface of the concave portion 58. As a result, the contact portion 28 and the contacted portion 32 can contact each other over the entire circumference in the circumferential direction, and for example, when the screw portion 26 is rotated in any circumferential direction, the contact portion 28 and the contacted portion 32 can be brought into contact, thereby suppressing further rotational displacement of each connector housing 22.

[0081] The connector housing 22 is connected to a metal retainer 128 that holds each wire 24 drawn out from the wire outlet 20, and a contact portion 28 is integrally provided on the metal retainer 128. By making the retainer that holds each wire 24 out of metal, material wear and tear is suppressed compared to, for example, when the retainer is made of synthetic resin, and the holding effect of each wire 24 can be stably exerted. Furthermore, by integrally providing the contact portion 28 on the metal retainer 128, an increase in the number of parts is avoided, and deformation of the contact portion 28 when it comes into contact with the contacted portion 32 can be avoided. As a result, the effect of preventing displacement of each connector housing 22 due to the rotation of the screw portion 26 can be stably exerted.

[0082] A second fastening portion 134 is provided in the metal retainer 128, and a contact portion 28 is formed by the outer circumferential surface of the cylindrical portion 166 that constitutes the second fastening portion 134. The connector 12 can be fixed to the mating connector 14 by the first fastening portion 111 and the second fastening portion 134, which are spaced apart from each other. As a result, even when external forces such as vibrations are input from each wire 24, the connector 12 itself is prevented from vibrating relative to the mating connector 14, and the transmission of external forces input from each wire 24 to each terminal 16 is suppressed. In particular, by cleverly utilizing the second fastening portion 134 to form the contact portion 28, an increase in the number of parts is also avoided.

[0083] Each connector housing 22 is covered by a shield shell 80 that connects to each connector housing 22, and a metal retainer 128 is assembled to the shield shell 80 with first tolerance absorption gaps 190, 192. As a result, when fastening the second bolt 184 to the second bolt fixing part 54, even if the second bolt insertion hole 186 and the second bolt fixing part 54 are misaligned, the first tolerance absorption gaps 190, 192 can be used to displace the metal retainer 128 relative to the shield shell 80, thereby aligning the second bolt insertion hole 186 and the second bolt fixing part 54 with each other. As a result, the second bolt 184 can be fastened stably, and the connector 12 and the mating connector 14 can be mated more efficiently. Furthermore, it is preferable that the recess 58 is larger than the outer shape of the cylindrical portion 166 so that the cylindrical portion 166 can be displaced within the recess 58 in accordance with the displacement of the metal retainer 128 relative to the shield shell 80. The recess 58 can be, for example, an oval or elliptical shape that extends in the direction of extension of the first tolerance absorption gaps 190 and 192.

[0084] A second tolerance-absorbing gap 194 is provided between the opposing surfaces of each assembled portion 122 in the shield shell 80 and each assembled portion 150 in the metal retainer 128, allowing the metal retainer 128 to be displaced in the front-rear direction by the amount of the second tolerance-absorbing gap 194 relative to the shield shell 80. This further ensures that the flat surface 170 of the cylindrical portion 166 and the bottom surface 59 of the recess 58 come into contact, thereby improving shielding performance.

[0085] <Variation> While Embodiment 1 has been described in detail above as a specific example of the present disclosure, the present disclosure is not limited by this specific description. Modifications, improvements, etc., to the extent that they can achieve the objectives of the present disclosure are included in the present disclosure. For example, the following modifications of the embodiments are also included in the technical scope of the present disclosure.

[0086] (1) In the above embodiment, the threaded portion 26 was made up of a male screw provided on the first bolt 108 arranged in the first fastening portion 111, and the mating threaded portion 30 was made up of a female screw provided on the inner circumferential surface of the first bolt fixing portion 52. However, the specific structure of each threaded portion can be any structure and is not limited thereto. For example, depending on the structure of the equipment on which the mating connector is provided, the threaded portion 26 may be made up of a female screw provided on the inner circumferential surface of the first bolt insertion hole 110, and the mating threaded portion 30 may be made up of a male screw provided on the outer circumferential surface of a bolt inserted into the first bolt insertion hole 110.

[0087] (2) In the above embodiment, when the threaded portion 26 and the mating threaded portion 30 have been threaded to a certain extent (as shown in Figures 8 and 9), the protruding tip of the cylindrical portion 166 enters the recess 58 on the fixed wall portion 36 side, and the rotation-preventing effect of each connector housing 22 is achieved by the contact between the outer surface of the cylindrical portion 166 (contact portion 28) and the inner surface of the recess 58 (contacted portion 32). However, the embodiment is not limited to this. That is, for example, the protrusion constituting the contact portion may be provided separately from the second fastening portion through which the second bolt is inserted, or fixing to the fixed wall portion with a metal retainer by the second bolt may not be adopted. For example, a solid, substantially cylindrical or substantially frustoconical protrusion may be provided that protrudes toward the fixed wall portion, and a recess having an inner diameter larger than the outer diameter of the protrusion may be provided toward the fixed wall portion, so that the protrusion enters the recess almost simultaneously with the start of threading between the threaded portion of the first bolt and the mating threaded portion on the fixed wall portion side. As a result, the rotation-preventing effect of each connector housing is activated almost simultaneously with the start of rotation of the screw portion (first bolt), thus more reliably achieving effects such as avoiding damage to each connector housing due to rotation prevention.

[0088] (3) In the above embodiment, the metal retainer 128 is provided with a cylindrical portion 166 as a protrusion projecting toward the fixed wall portion 36, and the fixed wall portion 36 is provided with a recess 58 so that the cylindrical portion 166 fits into the recess 58 when the connector 12 and the mating connector 14 are mated. However, the embodiment is not limited to this. That is, for example, the fixed wall portion is provided with a protrusion projecting toward the metal retainer, and the metal retainer is provided with a recess into which the protrusion fits, so that rotational displacement of the connector is prevented by the contact between the contact portion formed from the outer circumferential surface of the protrusion and the contacted portion formed from the inner circumferential surface of the recess. In the above embodiment, the contact portion 28 was formed by the outer circumferential surface of the protrusion (cylindrical portion 166) and the contacted portion 32 was formed by the inner circumferential surface of the recess 58. However, the contacted portion may be formed by the outer circumferential surface of the protrusion and the contact portion may be formed by the inner circumferential surface of the recess.

[0089] (4) In the above embodiment, the first tolerance absorption gaps 190 and 192 were provided in both the second bolt insertion hole 186 and between the opposing surfaces of the assembly part 150 and the assembled part 122. However, the first tolerance absorption gap may be provided in only one of the two locations, or not in either location. Also, in the above embodiment, the first tolerance absorption gap 192 provided between the opposing surfaces of the assembly part 150 and the assembled part 122 and the first tolerance absorption gap 190 provided in the second bolt insertion hole 186 both extended in the vertical and horizontal directions. However, for example, they may extend in only one of the two directions, vertical or horizontal. Furthermore, the first tolerance absorption gap provided between the opposing surfaces of the assembly part and the assembled part and the first tolerance absorption gap provided in the first bolt insertion hole may extend in different directions from each other. Furthermore, in the above embodiment, a second tolerance absorption gap 194 extending in the front-rear direction was provided between the opposing surfaces of the assembly portion 150 and the assembled portion 122, but the second tolerance absorption gap is not essential in the connector and connector unit according to this disclosure. In addition, the recess may be shaped to extend more in the vertical and horizontal directions than the cylindrical portion to match the first tolerance absorption gap which extends in the vertical and horizontal directions, but for example, as in the above embodiment, the gap in the horizontal direction between the cylindrical portion and the recess may be made smaller to further prevent vibration of the connector, or the recess may be made into an oval shape that extends in the horizontal direction to make it easier to align the second bolt insertion hole and the second bolt fixing portion in the horizontal direction.

[0090] (5) In the above embodiment, the second bolt 184 was inserted through the second bolt insertion hole 186 from rear to front and fastened to the second bolt fixing portion 54 in the fixing wall portion 36, but the invention is not limited to this embodiment. For example, a stud bolt protruding rearward may be provided in the fixing wall portion, or a bolt that penetrates the fixing wall portion and protrudes from front to rear may be provided, and the bolt may be inserted through the second bolt insertion hole and fastened to a nut at the rear of the metal retainer. Furthermore, the structure for fixing the metal retainer to the fixing wall portion is not limited to a bolt-nut structure, and conventionally known fixing structures such as fitting by grooves and protrusions or press-fitting may be adopted. Note that in the connector and connector unit of this disclosure, the metal retainer does not need to be fixed to the fixing wall portion. In other words, in the above embodiment, the contact portion 28 was formed by the outer circumferential surface of the cylindrical portion 166 through which the second bolt 184 is inserted. However, the second bolt for fixing the metal retainer to the fixed wall portion is not essential. For example, a solid, substantially cylindrical or frustoconical protrusion may be provided protruding from the metal retainer toward the fixed wall portion, and the outer circumferential surface of this protrusion may form a contact portion that can come into contact with the contact portion on the fixed wall portion side.

[0091] (6) In the above embodiment, the retainer assembled to the shield shell 80 was made of metal (metal retainer 128), but the retainer does not need to be made of metal and may be made of synthetic resin, for example. Note that the retainer is not essential in the connector and connector unit according to the present disclosure. Also, in the above embodiment, a shield shell 80 was provided that covered each connector housing 22 and connected to each connector housing 22, but the present disclosure is not limited to this form and the shield shell is not essential in the connector and connector unit according to the present disclosure. That is, in the above embodiment, the contact portion 28 was provided on the metal retainer 128, but for example, a contact portion that protrudes forward at the lower end of the shield shell or connector housing may be provided and come into contact with a contacted portion provided on the mating connector, thereby preventing rotational displacement of the connector.

[0092] (7) In the above embodiment, the first retaining part 130 and the second retaining part 132 were fixed by a fixing bolt 178, but the invention is not limited to this embodiment. The first retaining part and the second retaining part can be fixed by any method other than bolt fixing, such as crimping or lock fitting. Furthermore, even when fixing bolts are used as in the above embodiment, the fixing bolts may be inserted in the opposite direction to that of the above embodiment (from rear to front). Also, the first retaining part and the second retaining part do not need to be separate parts, and the first retaining part and the second retaining part may be formed as a single unit. For example, a hinge may be provided at one end in the circumferential direction of the first retaining part and the second retaining part to allow the first retaining part and the second retaining part to be opened and closed, and after the electric wire is sandwiched, the first retaining part and the second retaining part may be fixed to each other by a fixing mechanism provided at the other end in the circumferential direction of the first retaining part and the second retaining part.

[0093] (8) The shape of the terminal 16 in the above embodiment is merely illustrative and not limiting. That is, in the above embodiment, the terminal 16 had a cylindrical connecting portion 60 into which a pin-shaped mating terminal 18 was inserted, but the invention is not limited to this form. The mating terminal may be flat tab-shaped, for example, as described in International Publication No. 2021 / 145197, in which case the terminal only needs to have a substantially rectangular terminal insertion gap.

[0094] (9) In the above embodiment, a pair of connector housings 22, 22 were provided, and each terminal 16 was housed in each of the connector housings 22. However, the connector housings may be made of a single material, and a single connector housing may house multiple (for example, a pair) of terminals. In addition, the number of terminals and wires in the connector according to the present disclosure is not limited; there may be one of each, or there may be three or more of each. [Explanation of Symbols]

[0095] 10 Connector Units 12 connectors 14. Other connector 16 terminals 18. Opposite terminal 20 Wire outlet 22 Connector Housing 24 Electric wire 26 Screw part 28 Contact part 30 Mating threaded section 32 Abutted part 34. Other party housing 36 Fixed wall section 38 Columnar connection part 40 bolt insertion holes 42 Legs 44 volts 46 Waterproof rubber 48 Rectangular plate section 50 Through hole 52 First bolt fixing section 54 Second bolt fixing section 56 Female screw 58 recess 59 Bottom 60 Cylindrical connecting part 62 terminal body 64 Clip Springs 66 Wire fixing part 68 core wires 70 Insulating coating 72 Terminal housing section 74 Connector housing body 76 Connector housing cover 78 Through hole 80 Shield Shell 82 Waterproof rubber 84 Rear wall 86 Front wall section 88 Left wall 90 Right wall 92 Upper wall 94 Partition Section 96 Through-window 98 Inner cylinder part 100 Outer cylinder part 102 Through hole 104 Front retainer 106 Waterproof rubber 108 First bolt 110 First bolt insertion hole 111 1st fastening section 112 Contact area 114 recess 116 Flat surface 118 Ring mounting groove 120 C-ring 122 Assembled part 124 Storage Unit 124a Upper inner surface 124b Inner surface on the left-right outer side 124c bottom 126 Assembly protrusion 126a Top surface 126b Lateral outer surface 128 Metal retainer 130 1st holding part 132 Second holding part 134 Second fastening part 136 First Main Body 138 groove 140 Connection part 142 Pressing protrusion 144 Rear insertion hole 146 Rear gap 148 Circular recess 150 Assembly section 152 Upper protrusion 152a Lateral outer surface 152b Inner side in left and right direction 152c Front-to-back inner surface 154 Connection part 154a Top surface 154b Lower end surface 154c Inner surface in anteroposterior direction 156 Assembly area 158 Locking projection 160 Rear fixed part 162 Second Main Body 164 Front insertion hole 166 Cylindrical part (protruding part) 168 Front gap 170 Flat surface 172 Screw fixing part 174 Front fixed part 176 Recessed recess 178 Fixing bolts 180 Retainer bolt fixing part 182 Wire housing holes 184 Second bolt 185 Head 186 Second bolt insertion hole 188 Male screw 190 First tolerance absorption gap 191 Between opposing surfaces 192 First tolerance absorption gap 193 Between opposing surfaces 194 Second tolerance absorption gap 196 Shield Bracket 198 Cylinder wall 200 Locking frame 202 Screw holes 204 Fixing screw

Claims

1. A connector housing having a wire outlet, The terminals housed in the connector housing, A wire connected to the terminal and pulled out from the wire outlet to the outside of the connector housing, A threaded portion that screws into a mating threaded portion provided on the mating connector, and generates a mating force to the mating connector by the axial force acting between it and the mating threaded portion, It comprises a contact portion that can contact a contact portion provided on the side of the mating connector, The contact portion is provided on the wire side of the screw portion, A connector in which, as the screw portion rotates, the contact portion contacts the contacted portion to prevent displacement of the connector housing in the direction of rotation of the screw portion.

2. The contact portion and the contacted portion are configured to include the outer circumferential surface of a convex portion that protrudes toward the mating connector in the axial direction of the screw portion, The connector according to claim 1, wherein the other of the contact portion and the contacted portion includes the inner circumferential surface of a recess provided on the mating connector side for accommodating the protrusion.

3. The connector housing is further equipped with a metal retainer that is connected to the connector housing and holds the wire drawn out from the wire outlet, The connector according to claim 1 or claim 2, wherein the contact portion is integrally provided on the metal retainer.

4. The connector housing is further provided with a metal shield shell that covers the connector housing and is connected to the connector housing, The shield shell has a first fastening portion provided with a first bolt insertion hole through which the first bolt having the threaded portion is inserted. The metal retainer has a second fastening portion that is fastened to the fixed wall portion of the mating connector, The shield shell and the metal retainer are assembled together by a fitting portion provided on one side fitting together with a part to be fitted on the other side. The connector according to claim 3, wherein the opposing surfaces of the assembly portion and the assembled portion have a first tolerance-absorbing gap that expands in a first direction, the second bolt insertion hole that penetrates the second fastening portion constitutes the first tolerance-absorbing gap that expands in the first direction, and the metal retainer is assembled so as to be displaceable relative to the shield shell by the amount of the first tolerance-absorbing gap.

5. The metal retainer has a second fastening portion that is fastened to the fixed wall portion of the mating connector, The second fastening portion protrudes toward the fixed wall portion along the axial direction of the screw portion, The connector according to claim 3, wherein the contact portion is formed by the outer circumferential surface of the second fastening portion and is capable of contacting the contacted portion provided on the fixed wall portion.

6. The connector according to claim 4, wherein the opposing surfaces of the assembly portion and the assembled portion have a second tolerance-absorbing gap that extends in the bolt-fastening direction of the second fastening portion, and the metal retainer is assembled so as to be displaceable relative to the shield shell by the amount of the second tolerance-absorbing gap.

7. A connector unit in which a connector and a mating connector are mated, The connector is the connector described in claim 1 or claim 2. The mating connector is a connector unit having a mating threaded portion into which the threaded portion is screwed, and a contacted portion into which the contact portion can make contact.

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