Connector unit

Abstract

The present application provides a connector unit capable of realizing an airtight structure around a pin terminal and a receptacle terminal with a small number of components. The connector unit includes a receptacle connector including a receptacle terminal and a receptacle-side holder covering an outer peripheral surface of the receptacle terminal in an airtight manner; and a pin connector including a pin-shaped terminal and a pin-side holder covering an outer peripheral surface of the pin-shaped terminal in an airtight manner. The receptacle-side holder includes a recess into which the pin-side holder is inserted. An end surface of the receptacle terminal is in contact with the pin-side holder, and the pin-side holder is in contact with a bottom surface of the recess of the receptacle-side holder.

Description

Technical Field

[0001] The invention relates to a connector unit. Background Art

[0002] Generally, the connector unit preferably has a structure capable of controlling partial discharge (corona discharge) when the pin connector and the socket connector are connected. Fig. 27 As shown, the connector unit 100 according to patent document 1 (Japanese utility model patent registration publication number 2517429) includes a pin connector 103, in which the pin terminal 102 is formed by insert molding on the base 101; and a socket connector 106, in which the socket terminal 105 is formed by insert molding on the base 104.

[0003] The bottomed cylindrical portion 101a of the base 101 is covered with a sealing filler 107 made of a flexible synthetic resin. When the bottomed cylindrical portion 101a of the base 101 is engaged with the supporting cylinder 104a of the base 104, the end of the socket terminal 105 on the pin connector 103 side contacts the sealing filler 107, and the end of the supporting cylinder 104a of the base 104 on the pin connector 103 side contacts the sealing filler 107.

[0004] In this structure, the outer peripheral surface of the pin terminal 102 is covered in an airtight manner by the base 101, and the outer peripheral surface of the socket terminal 105 is covered in an airtight manner by the base 104. At the same time, in a state where the bottomed cylindrical portion 101a of the base 101 is fitted with the supporting cylindrical portion 104a of the base 104, the end of the socket terminal 105 on the pin connector 103 side contacts the sealing packing 107, and the end of the supporting cylindrical portion 104a of the base 104 on the pin connector 103 side contacts the sealing packing 107.

[0005] In this way, in the connector unit 100 according to Patent Document 1, in the connected state of the pin connector 103 and the receptacle connector 106, the area around the pin terminal 102 and the receptacle terminal 105 has an airtight structure, thereby controlling partial discharge.

[0006] Patent Document 1: Japanese Utility Model Patent Registration Publication No. 2517429. Summary of the invention

[0007] According to the connector unit 100 of patent document 1, in order to realize an airtight structure around the pin terminal 102 and the socket terminal 105 when the pin connector 103 and the socket connector 106 are connected, in addition to the base 101 of the pin connector 103 and the base 104 of the socket connector 106, a sealing filler 107 is also required.

[0008] Therefore, the connector unit 100 of Patent Document 1 has a problem that the number of parts is large in order to realize an airtight structure around the pin terminal 102 and the socket terminal 105 when the pin connector 103 and the socket connector 106 are connected.

[0009] An object of the present invention is to provide a connector unit which can realize an airtight structure around a pin terminal and a socket terminal with a small number of parts in a state where a pin connector and a socket connector are connected.

[0010] A connector unit according to one aspect of the present invention includes a socket connector including a socket terminal and a socket-side retainer, the socket-side retainer being configured to cover the outer peripheral surface of the socket terminal in an airtight manner; and a pin connector including a pin terminal connected to the socket terminal and a pin-side retainer, the pin-side retainer being configured to cover the outer peripheral surface of the pin terminal in an airtight manner, wherein: the socket-side retainer includes a recessed portion formed to surround an end surface of the socket terminal on a connection side connected to the pin connector, and an end portion of the pin-side retainer on a connection side connected to the socket connector is inserted into the recessed portion in a state where the socket connector and the pin connector are connected; the pin-side retainer is made of an elastic material; and in a state where the socket connector and the pin connector are connected, in the recessed portion of the socket-side retainer, the end surface of the socket terminal on the connection side connected to the pin connector contacts the pin-side retainer, and the pin-side retainer on the connection side connected to the socket connector contacts the bottom surface of the recessed portion of the socket-side retainer.

[0011] The connector unit according to one aspect of the present invention includes a socket connector, including a socket terminal and a socket side retainer, the socket side retainer being configured to cover the outer peripheral surface of the socket terminal in an airtight manner; and a pin connector, including a pin terminal connected to the socket terminal; a first pin side retainer being configured to cover the outer peripheral surface of the pin terminal in an airtight manner; and a biasing member being configured to apply a force toward the connection side connected to the socket connector to the first pin side retainer when the first pin side retainer is pushed to the side opposite to the connection side connected to the socket connector, wherein: the socket side retainer includes a recess, the recess being formed to surround the end surface of the socket terminal on the connection side connected to the pin connector, and when the socket connector and the pin connector are connected, the first pin side retainer is in contact with the first pin side retainer. The end of the connection side connected to the socket connector is inserted into the recess; the first pin side retaining piece is made of elastic material; when the socket connector is connected to the pin connector, in the recess of the socket side retaining piece, the end face of the socket terminal on the connection side connected to the pin connector contacts the first pin side retaining piece, and the first pin side retaining piece contacts the bottom surface of the recess of the socket side retaining piece at the end of the connection side connected to the socket connector; the first pin side retaining piece includes a flange portion, which is pushed by the biasing member; and an extension portion, which extends to the side opposite to the connection side connected to the socket connector relative to the flange portion; and the biasing member includes a plurality of split pieces, and is arranged to surround the extension portion of the first pin side retaining piece.

[0012] According to the present invention, there is provided a connector unit capable of realizing an airtight structure around a pin terminal and a socket terminal with a small number of parts in a connected state of a pin connector and a socket connector.

[0013] The above and other objects, features and advantages of the present invention will become more fully understood through the detailed description and accompanying drawings given below. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 1 is a perspective view viewed from the negative direction side of the y-axis, showing a state in which the receptacle connector and the pin connector are connected in the connector unit according to the first embodiment.

[0015] Figure 2 is a cross-sectional view showing a connection state of the receptacle connector and the pin connector in the connector unit according to the first embodiment.

[0016] Figure 31 is a perspective view, viewed from the positive direction side of the y-axis, showing a state in which the receptacle connector and the pin connector are not connected in the connector unit according to the first embodiment.

[0017] Figure 4 is a transparent perspective view showing the receptacle connector in the connector unit according to the first embodiment, as viewed from the positive y-axis direction side.

[0018] Figure 5 is a perspective view showing the receptacle connector in the connector unit according to the first embodiment, as viewed from the negative y-axis direction side.

[0019] Figure 6 is a cross-sectional view of the receptacle connector in the connector unit according to the first embodiment.

[0020] Figure 7 is a perspective view showing the receptacle terminal of the receptacle connector in the connector unit according to the first embodiment, as viewed from the positive direction side of the y-axis.

[0021] Figure 8 is a perspective view showing the pin connector in the connector unit according to the first embodiment, as viewed from the negative side in the y-axis direction.

[0022] Fig. 9 1 is an exploded view showing the pin connector in the connector unit according to the first embodiment, as viewed from the positive direction side of the y-axis.

[0023] Fig.10 is a cross-sectional view of the pin connector in the connector unit according to the first embodiment.

[0024] Fig.11 1 is a perspective view viewed from the negative direction side of the y-axis, showing a state in which the pin terminal of the pin connector in the connector unit according to the first embodiment is connected to the second wire.

[0025] Fig.12 1 is a perspective view showing a state in which the retainer of the pin connector and the pin terminal are integrally formed in the connector unit according to the first embodiment.

[0026] Fig.13 1 is a perspective view viewed from the negative direction side of the y-axis, showing a state in which the receptacle connector and the pin connector are connected in the connector unit according to the second embodiment.

[0027] Fig.14 is a cross-sectional view showing a connection state of the receptacle connector and the pin connector in the connector unit according to the second embodiment.

[0028] Fig.15 is a cross-sectional view showing in an enlarged manner the connection state of the receptacle connector and the pin connector in the connector unit according to the second embodiment.

[0029] Fig.16 is a perspective view, viewed from the negative direction side of the y-axis, showing a state in which the receptacle connector and the pin connector are not connected in the connector unit according to the second embodiment.

[0030] Fig.17 is a perspective view showing the receptacle connector in the connector unit according to the second embodiment, as viewed from the positive y-axis direction side.

[0031] Fig.18 1 is a view showing the receptacle connector in the connector unit according to the second embodiment, as viewed from the positive x-axis direction side.

[0032] Fig.19 1 is a view showing the receptacle connector in the connector unit according to the second embodiment, as viewed from the positive y-axis direction side.

[0033] Fig. 20 is a sectional view of the receptacle connector in the connector unit according to the second embodiment.

[0034] Fig.21 is a perspective view showing the pin connector in the connector unit according to the second embodiment, as viewed from the negative y-axis direction side.

[0035] Fig. 22 is a view showing the pin connector in the connector unit according to the second embodiment, as viewed from the positive x-axis direction side.

[0036] Fig.23 is a view showing the pin connector in the connector unit according to the second embodiment, as viewed from the negative side in the y-axis direction.

[0037] Fig.24 is a cross-sectional view of the pin connector in the connector unit according to the second embodiment.

[0038] Fig.25 is an exploded perspective view, viewed from the negative direction side of the y-axis, showing the pin terminal, the first holding member, the second holding member, etc. in the connector unit according to the second embodiment.

[0039] Fig.26 is a view showing an engagement structure of the second retainer and a biasing member of the pin connector in the connector unit according to the second embodiment.

[0040] Fig. 27Patent document 1 shows Figure 1 of the view. DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, the present invention is not limited to the following embodiments. In addition, the following description and the accompanying drawings will be appropriately shortened and simplified to make the explanation clearer. The following description uses a three-dimensional (XYZ) coordinate system to make the explanation clearer.

[0042] <First Embodiment>

[0043] Figure 1 1 is a perspective view viewed from the negative direction side of the y-axis, showing a state in which the receptacle connector and the pin connector are connected in the connector unit according to the present embodiment. Figure 2 is a cross-sectional view showing a connection state of the receptacle connector and the pin connector in the connector unit according to the present embodiment.

[0044] Figure 3 1 is a perspective view viewed from the positive direction of the y-axis, showing the state in which the socket connector and the pin connector in the connector unit according to the present embodiment are not connected. The connector unit 1 according to the present embodiment is, for example, a high-voltage connector unit, which includes a socket connector 2 and a pin connector 3, as shown in FIG. Figures 1 to 3 shown.

[0045] Figure 4 1 is a transparent perspective view showing the receptacle connector in the connector unit according to the present embodiment, as viewed from the positive direction side of the y-axis. Figure 5 1 is a perspective view, viewed from the negative direction side of the y-axis, showing the receptacle connector in the connector unit according to the present embodiment.

[0046] Figure 6 is a cross-sectional view of the receptacle connector in the connector unit according to the present embodiment. Figure 7 1 is a perspective view showing the receptacle terminal of the receptacle connector in the connector unit according to the present embodiment, as viewed from the positive direction side of the y-axis.

[0047] like Figures 4 to 6 As shown, the socket connector 2 includes a socket terminal 4 and a retaining member 5. The socket terminal 4 is made of a conductive metal material and is Figure 6 and Figure 7 As shown, it includes a first tubular portion 4a, a second tubular portion 4b, a partition wall 4c and a flange portion 4d.

[0048] like Figure 7 As shown, the first tubular portion 4a is substantially cylindrical and extends along the y-axis direction. Figure 2As shown, the internal space of the first tubular portion 4a serves as a first insertion portion 4e, and the end of the pin terminal 10 on the negative side in the y-axis direction in the pin connector 3 is inserted into the first insertion portion 4e.

[0049] like Figure 7 As shown, the second tubular portion 4b is substantially cylindrical and extends in the y-axis direction. The second tubular portion 4b is arranged on the negative y-axis side relative to the first tubular portion 4a and is continuous with the first tubular portion 4a in the y-axis direction.

[0050] like Figure 6 As shown, the central axis AX1 of the second tubular portion 4b is preferably arranged to substantially overlap the central axis AX2 of the first tubular portion 4a. In addition, the outer diameter of the second tubular portion 4b is preferably smaller than the outer diameter of the first tubular portion 4a, and the inner diameter of the second tubular portion 4b is preferably smaller than the inner diameter of the first tubular portion 4a.

[0051] like Figure 6 As shown, the inner space of the second tubular portion 4b serves as the second insertion portion 4f, and the conductor 6a of the first wire 6 is inserted into the second insertion portion 4f. In a state where the conductor 6a of the first wire 6 is inserted into the second insertion portion 4f, the socket terminal 4 is connected to the conductor 6a of the first wire 6 by soldering or the like.

[0052] like Figure 6 and Figure 7 As shown, the end portion of the second tubular portion 4b on the negative side in the y-axis direction preferably has a notch 4g for connecting the conductor 6a of the first lead 6 to the second tubular portion 4b by soldering.

[0053] For example, Figure 6 and Figure 7 As shown, the notch 4g is preferably provided at the positive z-axis side of the end of the second tubular portion 4b on the negative y-axis side, and is curved toward the negative z-axis side as viewed from the x-axis direction.

[0054] like Figure 6 As shown, the partition wall 4c is provided between the first tubular portion 4a and the second tubular portion 4b to divide the internal space of the first tubular portion 4a from the internal space of the second tubular portion 4b.

[0055] like Figure 6 As shown, the surface of the partition wall 4c on the positive direction side of the y-axis is preferably formed in a substantially conical shape, and its diameter increases as it goes toward the positive direction side of the y-axis, so that the pin terminal 10 of the pin connector 3 can be inserted in a proper manner. In addition, the surface of the partition wall 4c on the negative direction side of the y-axis is preferably formed in a substantially conical shape, and its diameter increases as it goes toward the negative direction side of the y-axis, so that the conductor 6a of the first lead 6 can be inserted in a proper manner.

[0056] like Figure 7 As shown in FIG. 1 , the flange portion 4d protrudes from the end portion of the first tubular portion 4a on the negative side of the y-axis to the radially outer side of the first tubular portion 4a and is generally annular when viewed from the y-axis direction. Figure 6 As shown, the flange portion 4d is preferably arranged slightly on the positive side in the y-axis direction relative to the partition wall 4c.

[0057] The holder (socket side holder) 5 is made of an insulating resin material and is Figure 4 and Figure 6 As shown, it covers the outer peripheral surface of the socket terminal 4 in an airtight manner. The retaining member 5 is generally cylindrical and extends along the y-axis direction. Figure 5 As shown, an external thread 5 a is formed on a portion of the outer peripheral surface of the holder 5 on the positive side in the y-axis direction.

[0058] For example, Figure 6 As shown, the retainer 5 is preferably integrally formed with the socket terminal 4 by insert molding to airtightly cover a portion of the outer peripheral surface of the socket terminal 4 on the positive y-axis direction side from the end of the second tubular portion 4b on the positive y-axis direction side.

[0059] Therefore, if Figure 6 As shown, the inner peripheral surface of the holder 5 is in close contact with the end of the second tubular portion 4b on the positive side of the y-axis direction and the flange portion 4d and the outer peripheral surface of the first tubular portion 4a in the socket terminal 4, thereby realizing an airtight structure.

[0060] In this way, the retainer 5 is formed to cover the flange portion 4d of the socket terminal 4, which enables the socket terminal 4 to be firmly fixed to the retainer 5. Figure 4 and Figure 5 As shown, the notch 4g of the second tubular portion 4b of the socket terminal 4 protrudes from the holder 5 to the negative side in the y-axis direction.

[0061] like Figure 2 and Figure 6 As shown in the figure, the internal space of the retainer 5 is located on the positive side of the y-axis relative to the socket terminal 4 as an insertion portion (i.e., a recessed portion) 5b, and the retainer 12 of the pin connector 3 is inserted into the insertion portion 5b. The end surface 4h on the positive side of the y-axis of the socket terminal 4 is exposed to the end surface 5c on the negative side of the y-axis of the insertion portion 5b (i.e., the bottom surface of the insertion portion 5b).

[0062] like Figure 6 As shown, the diameter of the insertion portion 5b is larger than the outer diameter of the first tubular portion 4a of the socket terminal 4. The end surface 5c of the insertion portion 5b on the negative y-axis side is arranged substantially parallel to the xz plane and substantially flush with the end surface 4h of the socket terminal 4 on the positive y-axis side.

[0063] like Figure 4 and Figure 5As shown, it is preferred that a plane 5d roughly parallel to the yz plane is formed at the end of the retaining member 5 on the positive side of the x-axis and the end on the negative side of the x-axis so that the operator can hold the socket connector 2 when connecting the socket connector 2 and the pin connector 3.

[0064] Figure 8 1 is a perspective view, viewed from the negative direction side of the y-axis, showing the pin connector in the connector unit according to the present embodiment. Fig. 9 1 is an exploded view viewed from the positive direction side of the y-axis, showing the pin connector in the connector unit according to the present embodiment. Fig.10 is a cross-sectional view of the pin connector in the connector unit according to the present embodiment.

[0065] Fig.11 1 is a perspective view viewed from the negative direction side of the y-axis, showing a state in which the pin terminal of the pin connector in the connector unit according to the present embodiment is connected to the second wire. Fig.12 1 is a perspective view showing a state in which the retainer of the pin connector and the pin terminal are integrally formed in the connector unit according to the present embodiment.

[0066] like Figures 8 to 10 As shown, the pin connector 3 includes a pin terminal 10, a contact 11, a retainer 12, a cover 13, and a biasing member 14. The pin terminal 10 is made of a conductive metal material and includes a columnar portion 10a, a conical portion 10b, a tubular portion 10c, and a flange portion 10d.

[0067] like Fig.11 As shown, the columnar portion 10 a is substantially columnar and extends along the y-axis direction. The diameter of the columnar portion 10 a is smaller than the inner diameter of the first insertion portion 4 e of the socket terminal 4 in the socket connector 2 .

[0068] like Fig.11 As shown, the conical portion 10b is formed in a substantially conical shape, and its diameter decreases toward the negative y-axis direction. The conical portion 10b is arranged on the negative y-axis direction side relative to the columnar portion 10a, and is continuous with the columnar portion 10a in the y-axis direction.

[0069] like Fig.10 As shown, the center axis AX3 of the conical portion 10b is preferably set to roughly overlap the center axis AX4 of the columnar portion 10a. In addition, the outer diameter of the end portion on the positive side of the y-axis direction of the conical portion 10b is preferably roughly equal to the inner diameter of the first insertion portion 4e of the socket terminal 4 in the socket connector 2.

[0070] Furthermore, the total length including the length of the columnar portion 10 a in the y-axis direction and the length of the tapered portion 10 b in the y-axis direction is preferably slightly shorter than the length of the first insertion portion 4 e of the socket terminal 4 in the socket connector 2 in the y-axis direction.

[0071] like Fig.11 As shown, the tubular portion 10c is substantially cylindrical and extends in the y-axis direction. The tubular portion 10c is arranged on the positive y-axis direction side relative to the columnar portion 10a and is continuous with the columnar portion 10a in the y-axis direction.

[0072] like Fig.10 As shown, the central axis AX5 of the tubular portion 10c is preferably arranged to substantially overlap the central axis AX4 of the columnar portion 10a. In addition, the outer diameter of the tubular portion 10c is preferably substantially equal to the outer diameter of the columnar portion 10a.

[0073] like Fig.10 As shown, the inner space of the tubular portion 10c serves as an insertion portion 10e, into which the conductor 15a of the second wire 15 is inserted. The pin terminal 10 is connected to the conductor 15a of the second wire 15 by forging the tubular portion 10c while the conductor 15a of the second wire 15 is inserted into the insertion portion 10e.

[0074] like Fig.11 As shown, the flange portion 10d protrudes radially outward from the end of the columnar portion 10a on the positive side of the y-axis and is generally annular when viewed from the y-axis direction. The outer diameter of the flange portion 10d is preferably approximately equal to the inner diameter of the first insertion portion 4e of the socket terminal 4 in the socket connector 2.

[0075] The contact member 11 is made of a conductive metal material, such as Figure 8 and Fig. 9 More specifically, the contact 11 includes a first tubular portion 11a, a second tubular portion 11b, and a leaf spring body 11c. The first tubular portion 11a is a plate body bent into a substantially C-shape when viewed from the y-axis direction, and extends along the y-axis direction.

[0076] like Fig.10 As shown, the inner diameter of the first tubular portion 11a is substantially equal to the diameter of the columnar portion 10a of the pin terminal 10. In addition, the outer diameter of the first tubular portion 11a is slightly smaller than the inner diameter of the first insertion portion 4e of the socket terminal 4 in the socket connector 2. Figure 8 and Fig. 9 As shown, the second tubular portion 11 b has substantially the same shape as the first tubular portion 11 a and is disposed on the positive side in the y-axis direction relative to the first tubular portion 11 a .

[0077] like Figure 8 and Fig. 9As shown in FIG. 1 , the leaf spring body 11c is a plate body that is bent into a convex shape toward the radial outer side of the contact 11 and extends in the y-axis direction. The leaf spring bodies 11c are arranged at intervals along the circumferential direction of the contact 11 and connect the first tubular portion 11a and the second tubular portion 11b. A contact point 11d that protrudes toward the radial outer side of the contact 11 is formed at the bent portion of the leaf spring body 11c.

[0078] like Figure 8 and Fig.10 As shown, in a state where the columnar portion 10 a of the pin terminal 10 is disposed in the contact 11 , the contact 11 is disposed between the conical portion 10 b and the flange portion 10 d of the pin terminal 10 .

[0079] The retaining member (pin side retaining member) 12 is made of an insulating elastic material such as silicon. Fig. 9 , Fig.10 and Fig.12 As shown, the outer peripheral surface of the pin terminal 10 is covered in an airtight manner. The retainer 12 is preferably formed integrally with the pin terminal 10 by insert molding, and covers, for example, the end of the flange portion 10d on the positive side of the y-axis direction of the pin terminal 10 and the outer peripheral surface of the tubular portion 10c and the connection portion between the pin terminal 10 and the second wire 15 in an airtight manner.

[0080] like Fig. 9 , Fig.10 and Fig.12 As shown, the retainer 12 includes a tubular portion 12a and a flange portion 12b. The tubular portion 12a is generally cylindrical and extends along the y-axis direction. The inner circumferential surface of the tubular portion 12a is in close contact with the end of the flange portion 10d on the positive y-axis side of the pin terminal 10 and the outer circumferential surface of the tubular portion 10c and the connection portion between the pin terminal 10 and the second wire 15, thereby achieving an airtight structure.

[0081] like Figure 2 As shown, the outer diameter of the tubular portion 12a is substantially equal to the diameter of the insertion portion 5b of the retainer 5 in the receptacle connector 2. Fig.12 As shown, the end surface 12c of the tubular portion 12a on the negative side in the y-axis direction (ie, the end surface of the holder 12 on the negative side in the y-axis direction) is arranged substantially parallel to the xz plane.

[0082] like Fig. 9 and Fig.12 As shown in FIG. 1 , the flange portion 12b protrudes from the end portion of the tubular portion 12a on the positive side in the y-axis direction toward the radially outer side of the tubular portion 12a. Figure 2 As shown, the length of the portion of the tubular portion 12a on the negative side in the y-axis direction relative to the flange portion 12b is substantially equal to the length of the insertion portion 5b of the holding member 5 of the receptacle connector 2 in the y-axis direction.

[0083] like Fig. 9 and Fig.12 As shown in FIG. 1 , the flange portion 12b is generally annular when viewed from the y-axis direction. Figure 2 As shown, the outer diameter of the flange portion 12 b is smaller than the outer diameter of the retainer 5 of the receptacle connector 2 .

[0084] like Fig.12 As shown in FIG. 1 , the end surface of the flange portion 12 b on the negative y-axis direction side is preferably formed in a substantially conical shape, and its diameter increases as it goes toward the positive y-axis direction side. Fig. 9 As shown, the end surface of the flange portion 12b on the positive y-axis direction side is preferably arranged substantially parallel to the xz plane. In addition, a plane 12d substantially parallel to the yz plane is preferably formed at the ends of the flange portion 12b on the positive x-axis direction side and the negative x-axis direction side.

[0085] The cover 13 is made of, for example, an insulating resin material and Fig. 9 As shown, it includes a tubular portion 13a and a flange portion 13b. The outer shape of the tubular portion 13a is substantially rectangular when viewed from the y-axis direction, for example, and the inner shape of the tubular portion 13a is substantially circular.

[0086] like Figure 2 As shown, the inner space of the tubular portion 13a serves as an insertion portion 13c, into which the end of the holder 5 in the receptacle connector 2 on the positive y-axis direction side is inserted. The inner diameter of the tubular portion 13a is substantially equal to the outer diameter of the holder 5 in the receptacle connector 2.

[0087] like Figure 2 As shown, an internal thread 13d for screwing with the external thread 5a of the retainer 5 in the socket connector 2 is formed on the inner peripheral surface of the tubular portion 13a. Figure 8 As shown, a protrusion 13e extending in the y-axis direction is preferably formed on the outer peripheral surface of the tubular portion 13a so that the operator's hand will not slip when the internal thread 13d of the cover body 13 is screwed into the external thread 5a of the retaining member 5 in the socket connector 2.

[0088] like Fig. 9 As shown in FIG. 1 , the flange portion 13b protrudes from the end of the tubular portion 13a on the positive direction side of the y-axis to the radially inner side of the tubular portion 13a. In addition, when viewed from the y-axis direction, a through hole 13f extending in the y-axis direction is formed at the approximate center of the flange portion 13b. The diameter of the through hole 13f is larger than the diameter of the second conductive wire 15.

[0089] like Fig.10 As shown, the cover 13 allows the second wire 15 to pass through, thereby covering the portion of the holder 12 on the positive side of the y-axis. When the shrink tube 16 through which the second wire 15 passes is fixed to the portion of the second wire 15 on the negative side of the y-axis, the cover 13 is prevented from moving to the positive side of the y-axis.

[0090] The biasing member 14 is made of an insulating resin material and is Fig. 9 As shown, for example, it can be a Teflon (registered trademark) gasket. Fig.10 As shown, the biasing member 14 allows the second wire 15 to pass through and be disposed in the insertion portion 13 c of the cover 13 , thereby being disposed between the flange portion 12 b of the holder 12 and the flange portion 13 b of the cover 13 .

[0091] Although in Fig. 9 The example shown includes two biasing members 14, but the number of biasing members 14 can be modified appropriately. In addition, the biasing member 14 can be a coil spring or the like, and can have any structure as long as it can apply a force to the holder 12 toward the negative y-axis direction side.

[0092] The following describes an example of the assembly process of the socket connector 2 of the connector unit 1 of the present embodiment. The socket connector 2 is assembled by integrally molding the y-axis positive side portion of the socket terminal 4 and the retainer 5 by insert molding from the y-axis positive side end of the second tubular portion 4b.

[0093] An example of the assembly process of the pin connector 3 of the connector unit 1 of the present embodiment is described below. First, the shrink tube 16 is passed through the second wire 15 and fixed. Next, the conductor 15a of the second wire 15 is inserted into the insertion portion 10e of the pin terminal 10, and the tubular portion 10c is forged, thereby connecting the pin terminal 10 and the second wire 15.

[0094] Then, the pin terminal 10 is inserted into the contact 11, and the contact 11 is placed between the conical portion 10b and the flange portion 10d of the pin terminal 10. Furthermore, the second lead 15 connected with the pin terminal 10 is passed from the positive side of the y-axis direction through the through hole 13f of the flange portion 13b of the cover body 13 to the negative side of the y-axis direction, and then through the biasing member 14.

[0095] After that, the cover 13 and the biasing member 14 are placed along the second lead 15 on the positive side of the y-axis, and the end of the flange portion 10d on the positive side of the y-axis and the tubular portion 10c in the pin terminal 10 and the connection portion between the pin terminal 10 and the second lead 15 are integrally molded with the retainer 12 by insert molding, thereby assembling the pin connector 3. It should be noted that, although the pin connector 3 includes the second lead 15 in the present embodiment, it may be configured so that the second lead 15 is not connected.

[0096] The following is a description of the connection process between the socket connector 2 and the pin connector 3 of the connector unit 1 of the present embodiment. For example, the conductor 6a of the first wire 6 is connected to the socket terminal 4 of the socket connector 2, and the cover 13 of the pin connector 3 is moved to the positive direction side of the y-axis along the second wire 15, and then the end of the pin terminal 10 and the contact 11 on the negative direction side of the y-axis in the pin connector 3 are inserted into the first insertion portion 4e of the socket terminal 4 in the socket connector 2.

[0097] Then, a portion of the retaining member 12 on the negative side of the y-axis of the pin connector 3 is inserted into the insertion portion 5b of the retaining member 5 in the socket connector 2, and the end face 12c of the retaining member 12 on the negative side of the y-axis in the pin connector 3 is brought into contact with the end face 4h of the socket terminal 4 on the positive side of the y-axis in the socket connector 2.

[0098] At the same time, the end face 12c on the negative y-axis direction side of the holder 12 in the pin connector 3 is brought into contact with the end face 5c of the insertion portion 5b on the negative y-axis direction side of the holder 5 in the receptacle connector 2. Furthermore, the outer peripheral surface of the tubular portion 12a of the holder 12 in the pin connector 3 is brought into contact with the outer peripheral surface of the insertion portion 5b of the holder 5 in the receptacle connector 2.

[0099] Since the retaining member 12 of the pin connector 3 is made of elastic material, the end face 12c on the negative side of the y-axis of the retaining member 12 in the pin connector 3 is in close contact with the end face 4h on the positive side of the y-axis of the socket terminal 4 in the socket connector 2, thereby realizing an airtight structure.

[0100] At the same time, the end face 12c on the negative y-axis direction side of the holder 12 in the pin connector 3 is in close contact with the end face 5c of the insertion portion 5b on the negative y-axis direction side of the holder 5 in the socket connector 2, thereby realizing an airtight structure. In addition, the outer peripheral surface of the tubular portion 12a of the holder 12 in the pin connector 3 is in close contact with the outer peripheral surface of the insertion portion 5b of the holder 5 in the socket connector 2, thereby realizing an airtight structure.

[0101] Furthermore, the outer peripheral surface of the socket terminal 4 in the socket connector 2 is covered by the holder 5 in an airtight manner to achieve an airtight structure, and the outer peripheral surface of the pin terminal 10 in the pin connector 3 is covered by the holder 12 in an airtight manner to achieve an airtight structure.

[0102] Then, move the cover body 13 of the pin connector 3 toward the negative direction of the y-axis along the second wire 15, insert the portion of the retaining member 12 in the pin connector 3 on the positive direction of the y-axis and the portion of the retaining member 5 in the socket connector 2 on the positive direction of the y-axis into the insertion portion 13c of the cover body 13, and screw the internal thread 13d of the cover body 13 into the external thread 5a of the retaining member 5 in the socket connector 2, thereby connecting the socket connector 2 to the pin connector 3.

[0103] At this time, the biasing member 14 applies a force toward the negative direction of the y-axis to the retaining member 12, and at the same time applies a reaction force to the flange portion 13b of the cover body 13, so that the end face 12c on the negative direction side of the y-axis of the retaining member 12 in the pin connector 3 contacts the end face 4h on the positive direction side of the y-axis of the socket terminal 4 in the socket connector 2, and the end face 12c on the negative direction side of the y-axis of the retaining member 12 in the pin connector 3 contacts the end face 5c of the insertion portion 5b on the negative direction side of the y-axis of the retaining member 5 in the socket connector 2.

[0104] In this way, the connector unit 1 according to this embodiment can control partial discharge in the state where the receptacle connector 2 is connected to the pin connector 3 by using the above-mentioned airtight structure. The connector unit 1 according to this embodiment adopts an elastic member as the holder 12 for holding the pin terminal 10 of the pin connector 3.

[0105] This eliminates the need to prepare sealing packing in addition to the retainer 5 of the socket connector 2 and the retainer 12 of the pin connector 3, thereby achieving an airtight structure around the socket terminal 4 and the pin terminal 10 in the connected state of the socket connector 2 and the pin connector 3, and can achieve an airtight structure around the socket terminal 4 and the pin terminal 10 with a small number of parts compared to the connector unit 100 of Patent Document 1. This enables the connector unit 1 according to the present embodiment to be reduced in size and manufactured at a lower cost and with a simpler process compared to the connector unit 100 according to Patent Document 1.

[0106] In particular, since in the connector unit 1 of the present embodiment, the retaining member 12 of the pin connector 3 is an elastic member, even if a manufacturing error occurs in the retaining member 12, etc., the end face 12c of the retaining member 12 on the negative side of the y-axis of the pin connector 3 can be brought into contact with the end face 4h of the socket terminal 4 on the positive side of the y-axis of the socket connector 2, and the end face 12c of the retaining member 12 on the negative side of the y-axis of the pin connector 3 can be brought into contact with the end face 5c of the insertion portion 5b of the retaining member 5 on the negative side of the y-axis of the socket connector 2.

[0107] Furthermore, in the connector unit 1 according to the present embodiment, the outer peripheral surface of the tubular portion 12a of the retainer 12 in the pin connector 3 contacts the outer peripheral surface of the insertion portion 5b of the retainer 5 in the receptacle connector 2. Therefore, when the end surface 12c on the negative direction side of the y-axis of the retainer 12 in the pin connector 3 contacts the end surface 4h of the receptacle terminal 4 on the positive direction side of the y-axis in the receptacle connector 2, and the end surface 12c on the negative direction side of the y-axis of the retainer 12 in the pin connector 3 contacts the end surface 5c of the insertion portion 5b on the negative direction side of the y-axis of the retainer 5 in the receptacle connector 2, the retainer 12 of the pin connector 3 can be prevented from being deformed in the radial direction of the retainer 12, thereby avoiding the malfunction of the above-mentioned connection state.

[0108] In addition, according to the connector unit 1 of the present embodiment, when the end face 4h on the positive direction side of the socket terminal 4 in the socket connector 2 and the end face 5c of the insertion portion 5b on the negative direction side of the y-axis of the retaining member 5 are approximately flush with each other, the end face 4h on the positive direction side of the y-axis of the socket terminal 4 in the socket connector 2 and the end face 5c of the insertion portion 5b on the negative direction side of the y-axis of the retaining member 5 can be easily brought into contact with the end face 12c on the negative direction side of the y-axis of the retaining member 12 in the pin connector 3.

[0109] Furthermore, in the connector unit 1 according to the present embodiment, when the socket terminal 4 and the retainer 5 are integrally formed by insert molding, it is possible to easily realize a structure in which the retainer 5 covers the outer peripheral surface of the socket terminal 4 in an airtight manner. When the retainer 5 is formed to cover the flange portion 4d of the socket terminal 4, the socket terminal 4 is firmly fixed to the retainer 5.

[0110] Similarly, in the connector unit 1 according to the present embodiment, when the pin terminal 10 and the retaining member 12 are integrally formed by insert molding, it is possible to easily realize a structure in which the retaining member 12 covers the outer peripheral surface of the pin terminal 10 and the connection portion between the pin terminal 10 and the second electric wire 15 in an airtight manner.

[0111] Furthermore, in the connector unit 1 according to the present embodiment, when the holder 12 includes the flange portion 12 b , the contact area between the biasing member 14 and the holder 12 increases, thereby appropriately applying a force on the negative y-axis direction to the holder 12 .

[0112] It should be noted that the structures of the socket connector 2 and the pin connector 3 according to the present embodiment are merely exemplary, and they may have any structure as long as the retaining member 12 of the pin connector 3 is an elastic member, and when the socket connector 2 and the pin connector 3 are connected, the end face 12c of the retaining member 12 on the negative side in the y-axis direction of the pin connector 3 contacts the end face 4h of the socket terminal 4 on the positive side in the y-axis direction of the socket connector 2, and the end face 12c of the retaining member 12 on the negative side in the y-axis direction of the pin connector 3 contacts the end face 5c of the insertion portion 5b of the retaining member 5 on the negative side in the y-axis direction of the socket connector 2.

[0113] In addition, the assembly process of the socket connector 2 and the pin connector 3 according to the present embodiment is only exemplary, and the assembly sequence is not particularly limited.

[0114] <Second Embodiment>

[0115] Fig.13 1 is a perspective view viewed from the negative direction side of the y-axis, showing a state in which the receptacle connector and the pin connector are connected in a connector unit according to the present embodiment. Fig.14is a cross-sectional view showing a connection state of the receptacle connector and the pin connector in the connector unit according to the present embodiment.

[0116] Fig.15 1 is a cross-sectional view showing in an enlarged manner the connection state of the receptacle connector and the pin connector in the connector unit according to the present embodiment. Fig.16 2 is a perspective view viewed from the negative direction of the y-axis, showing a state in which the socket connector and the pin connector in the connector unit according to the present embodiment are not connected. The connector unit 21 according to the present embodiment includes a socket connector 22 and a pin connector 23, for example Figures 13 to 16 shown.

[0117] Fig.17 1 is a perspective view showing the receptacle connector in the connector unit according to the present embodiment, as viewed from the positive direction side of the y-axis. Fig.18 1 is a view showing the receptacle connector in the connector unit according to the present embodiment, as viewed from the positive x-axis direction side. Fig.19 1 is a view showing the receptacle connector in the connector unit according to the present embodiment, as viewed from the positive direction side of the y-axis. Fig. 20 is a cross-sectional view of the receptacle connector in the connector unit according to the present embodiment.

[0118] like Figures 17 to 20 As shown, the socket connector 22 includes a socket terminal 24, a first holder 25, a second holder 26, an insulator 27, a resin member 28, and a housing 29. The socket terminal 24 is made of a conductive metal material and includes a first tubular portion 24a, a second tubular portion 24b, a partition wall 24c, and a flange portion 24d.

[0119] like Figure 14 to Figure 15 and Fig. 20 As shown, the first tubular portion 24a is substantially cylindrical and extends along the y-axis direction. The inner space of the first tubular portion 24a serves as a first insertion portion 24e, into which the end of the pin terminal 31 on the negative y-axis side of the pin connector 23 is inserted.

[0120] like Fig. 20 As shown, the second tubular portion 24b is substantially cylindrical and extends in the y-axis direction. The second tubular portion 24b is arranged on the negative y-axis side relative to the first tubular portion 24a and is continuous with the first tubular portion 24a in the y-axis direction.

[0121] like Fig. 20As shown, the central axis of the second tubular portion 24b is preferably configured to substantially overlap the central axis of the first tubular portion 24a. The internal space of the second tubular portion 24b serves as the second insertion portion 24f, and the end of the core wire 30 on the positive direction side of the y-axis is inserted into the second insertion portion 24f. When the end of the core wire 30 on the positive direction side of the y-axis is inserted into the second insertion portion 24f, the socket terminal 24 is electrically connected to the core wire 30.

[0122] like Fig. 20 As shown, the partition wall 24c is disposed between the first tubular portion 24a and the second tubular portion 24b to divide the internal space of the first tubular portion 24a and the internal space of the second tubular portion 24b.

[0123] like Fig.14 , Fig.15 and Fig. 20 As shown, the surface of the partition wall 24c on the positive direction side of the y-axis is preferably formed into a substantially conical shape, and its diameter increases as it goes toward the positive direction side of the y-axis, so that the pin terminal 31 of the pin connector 23 can be inserted in a proper manner. In addition, the surface of the partition wall 24c on the negative direction side of the y-axis is preferably formed into a substantially conical shape, and its diameter increases as it goes toward the negative direction side of the y-axis, so that the core wire 30 can be inserted in a proper manner.

[0124] like Fig. 20 As shown, the flange portion 24d protrudes radially outward from the end of the first tubular portion 24a on the negative y-axis direction side and is generally annular when viewed from the y-axis direction. The flange portion 24d is preferably arranged slightly on the positive y-axis side relative to the partition wall 24c.

[0125] The first holder (socket side holder) 25 is made of an insulating resin material and is Fig. 20 As shown, it covers the outer peripheral surface of the socket terminal 24 in an airtight manner. The first retaining member 25 is generally cylindrical and extends in the y-axis direction. A notch 25a cut out of the outer peripheral surface of the first retaining member 25 is preferably formed at the end of the first retaining member 25 on the positive y-axis direction side. The notch 25a is generally annular when viewed from the y-axis direction.

[0126] For example, Fig. 20 As shown, the first retainer 25 is preferably integrally formed with the socket terminal 24 by insert molding, thereby covering the outer peripheral surface of the socket terminal 24 in an airtight manner from the end of the first tubular portion 24a on the negative side of the y-axis to the end on the positive side of the y-axis.

[0127] So, for example Fig. 20As shown, the inner peripheral surface of the first retainer 25 is in close contact with the outer peripheral surface of the first tubular portion 24a and the outer peripheral surface of the flange portion 24d in the socket terminal 24, thereby realizing an airtight structure. In this structure, the first retainer 25 protrudes relative to the socket terminal 24 in the positive direction of the y axis.

[0128] like Fig.14 , Fig.15 and Fig. 20 As shown in the figure, the internal space of the first retainer 25 protruding toward the positive direction of the y-axis relative to the socket terminal 24 is used as an insertion portion (i.e., a recessed portion) 25b, and the end of the first retainer 33 on the negative direction side of the y-axis in the pin connector 23 is inserted into the insertion portion 25b. The end surface 24g on the positive direction side of the y-axis of the socket terminal 24 is exposed at the end surface 25c on the negative direction side of the y-axis of the insertion portion 25b.

[0129] like Fig. 20 As shown, the diameter of the insertion portion 25b is larger than the outer diameter of the first tubular portion 24a of the socket terminal 24. The end surface 25c of the insertion portion 25b on the negative y-axis side is arranged substantially parallel to the xz plane and substantially flush with the end surface 24g of the socket terminal 24 on the positive y-axis side.

[0130] The second retaining member 26 is made of an insulating resin material. Fig. 20 As shown in FIG. 2 , the second retaining member 26 is substantially cylindrical and extends along the y-axis direction. The inner circumferential surface of the second retaining member 26 has a shape corresponding to the outer circumferential surface of the first retaining member 25 .

[0131] like Fig. 20 As shown, the second holder 26 holds the first holder 25 in a state where the first holder 25 is inserted into the second holder 26, thereby covering the first holder 25. The end of the first holder 25 on the negative side in the y-axis direction and the end of the second holder 26 on the negative side in the y-axis direction are preferably arranged at substantially the same position in the y-axis direction.

[0132] For example Fig. 20 As shown, it is preferred that an external thread 26a is formed on the outer peripheral surface of the second retaining member 26. In addition, for example, Fig.17 and Fig.19 As shown, an insertion portion 26 b is preferably formed at the end of the second holder 26 on the positive side in the y-axis direction, and a tool for screwing and fixing the second holder 26 to the first penetration portion 27 a of the insulator 27 is inserted into the insertion portion 26 b.

[0133] For example Figures 17 to 20As shown, the insulator 27 is generally cylindrical and extends along the y-axis direction. The insulator 27 includes a first penetration portion 27a, a second penetration portion 27b, an insertion portion 27c and a groove 27d. The first penetration portion 27a is arranged on the y-axis positive direction side of the insulator 27. The diameter of the first penetration portion 27a is substantially the same as the outer diameter of the second retaining member 26.

[0134] For example Fig. 20 As shown, an internal thread 27e is preferably formed on the circumferential surface of the first penetration portion 27a, and the external thread 26a of the second retaining member 26 is preferably screwed into the internal thread 27e of the first penetration portion 27a, and the second retaining member 26 is inserted into the first penetration portion 27a and fixed to the insulator 27.

[0135] like Fig. 20 As shown, the second penetration portion 27b is continuous with the first penetration portion 27a and is arranged on the negative y direction side relative to the first penetration portion 27a. The central axis of the second penetration portion 27b is preferably substantially overlapped with the central axis of the first penetration portion 27a.

[0136] like Fig. 20 As shown, the second penetration portion 27b includes a first portion 27f and a second portion 27g. The first portion 27f is arranged on the positive side of the y-axis relative to the second portion 27g. The diameter of the first portion 27f is preferably smaller than the outer diameter of the flange portion 24d of the socket terminal 24.

[0137] For example Fig. 20 As shown, the diameter of the second portion 27g is preferably larger than the diameter of the first portion 27f. Therefore, a flange portion 27h protruding radially inward of the second penetration portion 27b is provided between the first penetration portion 27a and the second portion 27g of the second penetration portion 27b.

[0138] This enables the first holder 25 and the second holder 26 to be positioned in a state where the ends of the first holder 25 and the second holder 26 on the negative y-axis side are in contact with the ends of the flange 27h on the positive y-axis side. Fig. 20 The core wire 30 is inserted into the second penetration portion 27b. The core wire 30 preferably protrudes from the insulator 27 to the negative side in the y-axis direction.

[0139] like Fig.14 , Fig.15 and Fig. 20 As shown, the insertion portion 27c is formed at the end of the insulator 27 on the positive side of the y-axis, and the end of the insulator 35 on the negative side of the y-axis in the pin connector 23 is inserted therein. Fig.17 As shown, the insertion portion 27c is a substantially annular recessed portion, and is arranged to surround the first penetration portion 27a when viewed from the y-axis direction.

[0140] like Fig.18 and Fig. 20 As shown, in order to increase the creepage distance, a groove 27d is formed on the outer peripheral surface of the insulator 27. Fig.17 As shown, the grooves 27d extend along the circumferential direction of the insulator 27 and are arranged at substantially equal intervals in the y-axis direction.

[0141] like Fig. 20 As shown, the resin member 28 fills the second penetration portion 27b of the insulator 27. The resin member 28 fixes the socket terminal 24 and the core wire 30. The housing 29 includes a tubular portion 29a and a flange portion 29b.

[0142] like Figures 17 to 20 As shown, the tubular portion 29a is generally cylindrical and extends in the y-axis direction. The tubular portion 29a includes, for example, an external thread 29c and an insertion portion 29d. The external thread 29c is formed on a portion of the outer peripheral surface of the tubular portion 29a on the positive direction side of the y-axis. The external thread 29c is preferably, for example, a multi-start thread.

[0143] like Fig.14 , Fig.15 and Fig. 20 As shown, the insertion portion 29d is formed at the end of the tubular portion 29a on the positive side of the y-axis, and the end of the third housing 41 on the negative side of the y-axis in the pin connector 23 is inserted therein. When viewed from the y-axis direction, the insertion portion 29d is generally annular and is a notch cut out of the inner peripheral surface of the insertion portion 29d. Fig.17 and Fig.19 As shown, the insertion portion 29d preferably has a recessed portion 29e extending in the y-axis direction.

[0144] like Fig. 20 As shown, the flange portion 29b protrudes from the radially outer side of the tubular portion 29a. The flange portion 29b is used, for example, to fix the socket connector 22 to the housing of the electronic device. For example, when the insulator 27 is inserted into the housing 29, the housing 29 is fixed to a portion of the insulator 27 on the positive side of the y-axis.

[0145] Fig.21 1 is a perspective view, viewed from the negative direction side of the y-axis, showing the pin connector in the connector unit according to the present embodiment. Fig. 22 1 is a view viewed from the positive direction side of the x-axis, showing the pin connector in the connector unit according to the present embodiment. Fig.23 1 is a view viewed from the negative direction side of the y-axis, showing the pin connector in the connector unit according to the present embodiment.

[0146] Fig.24 is a cross-sectional view of the pin connector in the connector unit according to the present embodiment. Fig.251 is an exploded perspective view viewed from the negative direction side of the y-axis, showing a pin terminal, a first holding member, a second holding member, etc. in the connector unit according to the present embodiment.

[0147] like Figure 21 to Figure 24 As shown, the pin connector 23 includes a pin terminal 31 , a contact 32 , a first retainer 33 , a second retainer 34 , an insulator 35 , a biasing member 36 , a resin member 37 , a first housing 38 , a second housing 39 , an insulator 40 , a third housing 41 , and a fourth housing 42 .

[0148] The pin terminal 31 is made of a conductive metal material and is Fig.24 As shown in FIG. 1 , it includes a columnar portion 31a, a conical portion 31b, a tubular portion 31c and a flange portion 31d. The columnar portion 31a is generally columnar and extends along the y-axis direction. Fig.14 and Fig.15 As shown, the diameter of the columnar portion 31 a is smaller than the inner diameter of the first insertion portion 24 e of the receptacle terminal 24 in the receptacle connector 22 .

[0149] like Fig.24 and Fig.25 As shown in FIG. 1 , the conical portion 31 b is substantially conical, and its diameter decreases as it moves toward the negative direction of the y-axis. The conical portion 31 b is arranged on the negative direction side of the y-axis relative to the columnar portion 31 a, and is continuous with the columnar portion 31 a in the y-axis direction. Fig.14 and Fig.15 As shown, the outer diameter of the end portion of the tapered portion 31 b on the positive side in the y-axis direction is preferably substantially equal to the inner diameter of the first insertion portion 24 e of the socket terminal 24 in the socket connector 22 .

[0150] like Fig.24 and Fig.25 As shown, the tubular portion 31c is arranged at the end of the columnar portion 31a on the positive direction side of the y-axis. The tubular portion 31c is roughly cylindrical and protrudes from the columnar portion 31a to the positive direction side of the y-axis. The central axis of the columnar portion 31a, the central axis of the conical portion 31b, and the central axis of the tubular portion 31c are preferably arranged to roughly overlap each other. The end of the core wire 43a of the conductor 43 on the negative direction side of the y-axis is inserted into the tubular portion 31c and is electrically connected to the tubular portion 31c.

[0151] like Fig.24 and Fig.25 As shown in FIG. 1 , the flange portion 31d is arranged on the positive side of the y-axis relative to the conical portion 31b. The flange portion 31d protrudes from the columnar portion 31a toward the radially outer side of the columnar portion 31a and is generally annular when viewed from the y-axis direction. Fig.14 and Fig.15 As shown, the outer diameter of the flange portion 31 d is substantially equal to the inner diameter of the first insertion portion 24 e of the receptacle terminal 24 in the receptacle connector 22 .

[0152] like Fig.14 and Fig.15 As shown, relative to the end of the flange portion 31d on the positive side of the y-axis, the length of a portion of the pin terminal 31 on the negative side of the y-axis in the y-axis direction is preferably approximately equal to the length of the first insertion portion 24e of the socket terminal 24 in the socket connector 22 in the y-axis direction.

[0153] like Fig.25 As shown, the contact piece 32 has a shape substantially the same as the contact piece 11 of the first embodiment, and when a portion of the columnar portion 31a on the negative side of the y-axis of the pin terminal 31 is inserted into the contact piece 32, the contact piece 32 is arranged between the conical portion 31b and the flange portion 31d of the pin terminal 31.

[0154] The first retaining member (first pin side retaining member) 33 is made of an insulating elastic material such as silicon, and is Fig.24 and Fig.25 As shown, the outer peripheral surface of the pin terminal 31 is covered in an airtight manner. The first retainer 33 is preferably formed integrally with the pin terminal 31 by insert molding, and covers a portion of the pin terminal 31 on the positive y-axis side, for example, including the end of the flange portion 31d on the positive y-axis side, in an airtight manner.

[0155] like Fig.24 and Fig.25 As shown, the first retaining member 33 has a tubular portion 33a, a flange portion 33b and an extending portion 33c. The tubular portion 33a is substantially cylindrical and extends along the y-axis direction.

[0156] like Fig.14 and Fig.15 As shown, the outer diameter of the tubular portion 33a is substantially equal to the diameter of the insertion portion 25b of the first retaining member 25 in the receptacle connector 22. Fig.24 and Fig.25 As shown, the end surface 33d of the tubular portion 33a on the negative side in the y-axis direction (ie, the end surface of the first holder 33 on the negative side in the y-axis direction) is arranged substantially parallel to the xz plane.

[0157] like Fig.24 and Fig.25 As shown in FIG. 1 , the flange portion 33b protrudes from the end of the tubular portion 33a on the positive direction side of the y-axis to the radially outer side of the tubular portion 33a. When viewed from the y-axis direction, the flange portion 33b is generally annular. For example, the end surface 33e on the negative direction side of the y-axis of the flange portion 33b is preferably formed in a generally conical shape, and its diameter increases as it goes toward the positive direction side of the y-axis.

[0158] For example Fig.24 and Fig.25As shown, the end face 33f of the flange portion 33b on the positive y-axis direction side is preferably arranged substantially parallel to the xz plane. In addition, it is preferred that a plane 33g substantially parallel to the yz plane is formed at the end portion on the positive x-axis direction side and the end portion on the negative x-axis direction side of the flange portion 33b.

[0159] like Fig.24 and Fig.25 As shown, the extension portion 33c is substantially cylindrical and protrudes from the tubular portion 33a to the positive direction of the y-axis. The outer diameter of the extension portion 33c is preferably smaller than the outer diameter of the tubular portion 33a.

[0160] like Fig.24 and Fig.25 As shown, the inner peripheral surface of the tubular portion 33a and the inner peripheral surface of the extension portion 33c are in close contact with a portion of the outer peripheral surface of the pin terminal 31 between the end of the flange portion 31d on the positive direction side of the y-axis and the tubular portion 31c, thereby realizing an airtight structure. Therefore, with respect to the end of the flange portion 31d on the positive direction side of the y-axis, a portion of the pin terminal 31 on the negative direction side of the y-axis and the tubular portion 31c of the pin terminal 31 are exposed from the first retainer 33.

[0161] The second retaining member (second pin side retaining member) 34 is made of an insulating resin material. Fig.24 and 25 As shown, the second retaining member 34 is generally cylindrical and extends in the y-axis direction. The shape of the inner peripheral surface of the second retaining member 34 corresponds to a portion of the outer peripheral surface on the negative side of the y-axis direction of the first retaining member 33, including the end of the flange portion 33b on the positive side of the y-axis direction.

[0162] like Fig.24 As shown, the second holder 34 holds the first holder 33 while the first holder 33 is inserted into the second holder 34 to cover the portion of the first holder 33 on the negative side in the y-axis direction, including the end of the flange portion 33 b on the positive side in the y-axis direction.

[0163] The end of the flange 33b of the first holder 33 on the positive y-axis direction (i.e., the end surface 33f of the flange 33b on the positive y-axis direction) and the end of the second holder 34 on the positive y-axis direction are preferably arranged at substantially the same position in the y-axis direction. The first holder 33 protrudes from the second holder 34 to the negative y-axis direction.

[0164] For example Fig.24 As shown, it is preferred that an external thread 34a is formed on the outer peripheral surface of the second retaining member 34. Fig.23 As shown, an insertion portion 34 b is preferably formed at the end of the second holder 34 on the negative side in the y-axis direction, and a tool for screwing the second holder 34 into the first penetration portion 35 a fixed to the insulator 35 is inserted into the insertion portion 34 b.

[0165] Fig.26 FIG. 2 is a view showing the engagement structure of the second retaining member and the biasing member of the pin connector in the connector unit according to the present embodiment. Fig.26 As shown, a small diameter portion 34 c is formed at the end portion of the second holder 34 on the positive direction side of the y-axis. The diameter of the small diameter portion 34 c is smaller than the diameter of the portion of the second holder 34 on the negative direction side of the y-axis.

[0166] like Fig.26 As shown, an engaging portion 34d is formed on the small diameter portion 34c. The engaging portion 34d engages with the engaging portion 36c of the biasing member 36. The engaging portion 34d preferably includes a flat portion 34e, an insertion portion 34f, and a recess 34g.

[0167] like Fig.26 As shown, the flat portion 34e is formed by cutting off the ends of the small diameter portion 34c on the positive x-axis direction and the negative x-axis direction. The flat portions 34e are substantially parallel to the yz plane and face each other in the x-axis direction.

[0168] like Fig.26 As shown, the insertion portion 34f is formed in each flat portion 34e and is a groove extending in the z-axis direction. The end of each insertion portion 34f on the positive direction side of the z-axis and the end on the negative direction side of the z-axis are open. The recessed portion 34g is formed at the bottom of the insertion portion 34f and is arranged at intervals in the z-axis direction in each insertion portion 34f. The recessed portion 34g is recessed toward the other insertion portion 34f.

[0169] The insulator 35 is made of an insulating resin material. Fig.24 As shown, the insulator 35 is substantially cylindrical and extends along the y-axis direction. The insulator 35 includes a first penetration portion 35a, a second penetration portion 35b, a first insertion portion 35c and a second insertion portion 35d.

[0170] like Fig.24 As shown, the second holder 34 holding the pin terminal 31 and the first holder 33 and the wire 43 are inserted into the first penetration portion 35a. The diameter of the first penetration portion 35a on the negative side of the y-axis is substantially equal to the outer diameter of the second holder 34.

[0171] For example Fig.24 As shown, preferably, an internal thread 35e is formed on a portion of the peripheral surface of the first penetration portion 35a on the negative side of the y-axis. It is further preferred that the external thread 34a of the second retainer 34 is screwed into the internal thread 35e of the first penetration portion 35a, the second retainer 34 is inserted into the first penetration portion 35a, and fixed to the insulator 35.

[0172] In addition, if Fig.24As shown, it is preferred that a first step portion 35f and a second step portion 35g are formed on the first penetration portion 35a. The first step portion 35f is arranged at a boundary portion having a smaller diameter than a portion of the first penetration portion 35a on the negative side in the y-axis direction.

[0173] like Fig.24 As shown, the second step portion 35g is arranged at a boundary portion having a larger diameter than a portion of the first penetration portion 35a at the boundary of the first step portion 35f having a reduced diameter. A dielectric member 43b covering the core wire 43a of the conductive wire 43 is preferably arranged at a portion of the first penetration portion 35a on the positive y-axis direction side relative to the second step portion 35g.

[0174] like Fig.24 As shown, the second penetration portion 35b is continuous with the first penetration portion 35a and arranged on the negative side of the y-axis relative to the first penetration portion 35a. A portion of the pin terminal 31 protruding from the second holder 34 to the negative side of the y-axis together with the first holder 33 is arranged in the second penetration portion 35b.

[0175] like Fig.14 and Fig.15 As shown, a portion of the radially inner side of the insulator 27 is inserted into the second penetration portion 35b relative to the insertion portion 27c of the insulator 27 in the socket connector 22. The end of the insulator 35 on the negative y-axis direction side is inserted into the insertion portion 27c of the insulator 27 of the socket connector 22.

[0176] like Fig.24 As shown, the first insertion portion 35c is disposed at the end of the insulator 35 on the negative side of the y-axis. The first insertion portion 35c is a notch cut out at the end of the outer peripheral surface of the insulator 35 on the negative side of the y-axis, and is generally annular when viewed from the y-axis direction. Fig.14 and Fig.15 As shown, with respect to the insertion portion 27 c of the insulator 27 in the receptacle connector 22 , a portion of the radially outer side of the insulator 27 is inserted into the first insertion portion 35 c .

[0177] like Fig.24 As shown, the second insertion portion 35d is disposed at the end portion on the positive y-axis direction side of the insulator 35. The second insertion portion 35d is a notch cut out at the end portion of the outer peripheral surface on the positive y-axis direction side of the insulator 35 and has a substantially annular shape when viewed from the y-axis direction.

[0178] The biasing member 36 is made of, for example, an insulating elastic material. Fig.24 As shown, the biasing member 36 is preferably a plate body that is substantially annular when viewed from the y-axis direction. The biasing member 36 is disposed in the first penetration portion 35 a of the insulator 35 .

[0179] like Fig.24As shown, the extension portion 33 c of the first retainer 33 is inserted into the biasing member 36 and is interposed between the flange portions 33 b of the first and second retainers 33 and 34 and the first step portion 35 f of the first penetration portion 35 a of the insulator 35 .

[0180] In this structure, the flange portion 33b of the first retainer 33 is sandwiched between the biasing member 36 and the second retainer 34. Thus, the positions of the pin terminal 31 and the first retainer 33 in the y-axis direction are restricted, and when the first retainer 33 is pushed to the positive direction side of the y-axis, the first retainer 33 is biased to the negative direction side of the y-axis by the elastic force of the biasing member 36.

[0181] Although detailed functions will be described later, the biasing member 36 is preferably divided into a plurality of parts. Fig.26 As shown, the biasing member 36 is preferably divided into a first divided piece 36a and a second divided piece 36b. It should be noted that since the first divided piece 36a and the second divided piece 36b are planar symmetrical with respect to the xy plane, the first divided piece 36a is used as a representative in the following description.

[0182] like Fig.26 As shown, the first split piece 36a is a component that splits the biasing member 36 into two halves along the z-axis direction, and has a joint portion 36c. The joint portion 36c has a recessed portion 36d, an insertion portion 36e, and a protruding portion 36f. The recessed portion 36d is formed at the end of the first split piece 36a on the negative side of the y-axis direction, and is a groove extending in the z-axis direction.

[0183] like Fig.26 As shown, the insertion portion 36e protrudes from the end of the x-axis positive direction side and the end of the x-axis negative direction side of the recess 36d to the inner side of the recess 36d. The insertion portions 36e are opposite to each other in the x-axis direction and extend in the z-axis direction. The protrusion 36f protrudes from each insertion portion 36e to the inner side of the recess 36d along the x-axis direction.

[0184] In a state where the small diameter portion 34c of the second holder 34 is inserted into the recessed portion 36d of the first split member 36a from the positive direction side of the z-axis, and the insertion portion 36e of the first split member 36a is inserted into the insertion portion 34f of the second holder 34, the protrusion 36f of the first split member 36a engages with the recessed portion 34g of the second holder 34, thereby fixing the first split member 36a to the second holder 34. Therefore, the first split member 36a and the second split member 36b are fixed in a state of surrounding the extension portion 33c of the first holder 33.

[0185] like Fig.24As shown, the resin member 37 fills a portion of the first penetration portion 35a of the insulator 35 located on the positive side in the y-axis direction relative to the biasing member 36. The resin member 37 fixes the pin terminal 31, the connection portion between the pin terminal 31 and the core wire 43a of the wire 43, and a portion of the wire 43 located on the positive side in the y-axis direction relative to the connection portion with the pin terminal 31.

[0186] The first housing 38 is made of a conductive metal material. Fig.24 As shown, the first housing 38 includes a tubular portion 38a and a flange portion 38b. The tubular portion 38a is generally cylindrical and extends in the y-axis direction. The flange portion 38b protrudes inwardly along the radial direction of the tubular portion 38a from the end of the tubular portion 38a on the positive side of the y-axis. When viewed from the y-axis direction, the flange portion 38b is generally annular.

[0187] like Fig.24 As shown, the first housing 38 is configured to cover a portion of the insulator 35 on the positive y-axis direction side. The lead wire 43 is led out to the flange portion 38b of the first housing 38. The tubular portion 38a of the first housing 38 is inserted into the second insertion portion 35d of the insulator 35 to cover the portion of the insulator 35 on the positive y-axis direction side.

[0188] The second housing 39 is made of a conductive metal material. Fig.24 As shown, the second housing 39 includes a tubular portion 39a and a flange portion 39b. The tubular portion 39a is generally cylindrical and extends in the y-axis direction. The flange portion 39b protrudes inwardly along the radial direction of the tubular portion 39a from the end of the tubular portion 39a on the positive direction side of the y-axis. When viewed from the y-axis direction, the flange portion 39b is generally annular.

[0189] like Fig.24 As shown, the second housing 39 is configured to cover the first housing 38. The wire 43 is led out into the flange portion 39b of the second housing 39. The ground shield 43c of the wire 43 is placed between the first housing 38 and the second housing 39, and the conductive gasket 44 is interposed between the two, thereby establishing a ground path. The tubular portion 39a of the second housing 39 protrudes from the first housing 38 to the negative direction side of the y-axis, and, for example, preferably, an internal thread 39c is formed on the inner peripheral surface of the protruding portion.

[0190] like Fig.14 and Fig.24 As shown, the insulating member 40 covers a portion of the wire 43 from which the insulating member 43d is stripped, so that the portion from which the insulating member 43d is stripped to expose the ground shield 43c in the wire 43 is not exposed from the pin connector 23. The insulating member 40 is inserted into the flange portion 39b of the second housing 39, and the wire 43 is inserted into the insulating member 40.

[0191] For example Fig.21 and Fig. 22As shown, it is preferred that a flat portion 39d substantially parallel to the yz plane protrudes from the flange portion 39b of the second housing 39 to the positive y-axis direction side, and the insulating member 40 is sandwiched between the insertion components 45 in the x-axis direction, and the insertion components 45 are arranged across the flat portion 39d on both sides of the wire 43 in the z-axis direction. In this way, the wire 43 can be firmly fixed to the second housing 39.

[0192] The third housing 41 is made of a conductive metal material. Fig.24 As shown, the third housing 41 is substantially cylindrical and extends along the y-axis direction. The third housing 41 is supported by the insulator 35, so that when the insulator 35 is inserted into the third housing 41, the third housing 41 can rotate around the y-axis, thereby covering a portion of the insulator 35 on the negative side of the y-axis.

[0193] like Fig.24 As shown, the end of the third housing 41 on the negative side of the y-axis is arranged at substantially the same position in the y-axis direction as the end of the insulator 35 on the negative side of the y-axis. In addition, a portion of the third housing 41 on the positive side of the y-axis is arranged between the insulator 35 and the tubular portion 39a of the second housing 39.

[0194] like Fig.24 As shown, for example, an external thread 41a is preferably formed on a portion of the outer peripheral surface on the positive side of the y-axis of the third housing 41. The external thread 41a of the third housing 41 is preferably screwed with the internal thread 39c of the tubular portion 39a of the second housing 39. This enables the third housing 41 to be fixed to the second housing 39.

[0195] In addition, if Fig.21 and Fig.23 As shown, for example, a protrusion 41b for inserting into the recess 29e of the housing 29 of the receptacle connector 22 is preferably formed on a portion of the outer peripheral surface on the negative side of the y-axis direction of the third housing 41. The protrusion 41b extends in the y-axis direction.

[0196] The fourth housing 42 is made of a conductive metal material. Fig.21 and Fig.24 As shown, the fourth housing 42 is substantially cylindrical and extends along the y-axis direction. The inner diameter of the fourth housing 42 is greater than the outer diameter of the third housing 41. Fig.15 As shown, an internal thread 42 a is formed on the inner peripheral surface of the fourth housing 42 , and the external thread 29 c of the housing 29 of the receptacle connector 22 is inserted into the internal thread 42 a .

[0197] like Fig.24 As shown, the fourth housing 42 is supported by the third housing 41 so that when the third housing 41 is inserted into the fourth housing 42, the fourth housing 42 can rotate around the y-axis, thereby covering a portion of the third housing 41 protruding from the second housing 39 to the negative side of the y-axis.

[0198] An example of the assembly process of the socket connector 22 in the connector unit 21 according to the present embodiment is described below. First, the end of the core wire 30 on the positive direction side of the y-axis is electrically connected to the second tubular portion 24b of the socket terminal 24. Next, the socket terminal 24 is integrally molded with the first retainer 25 by insert molding, and the socket terminal 24 is covered with the first retainer 25.

[0199] Then, the first holder 25 is inserted into the second holder 26, and the first holder 25 is covered with the second holder 26. Thereafter, the core wire 30 is passed through the first penetration portion 27a and the second penetration portion 27b of the insulator 27 from the positive y-axis direction side, and the external thread 26a of the second holder 26 is screwed into the internal thread 27e of the insulator 27.

[0200] Thus, the socket terminal 24, the first retaining member 25 and the second retaining member 26 are inserted into the first penetration portion 27a of the insulator 27, and the end of the first retaining member 25 on the negative side of the y-axis and the end of the second retaining member 26 on the negative side of the y-axis are in contact with the flange portion 27h of the insulator 27.

[0201] Thus, the socket terminal 24, the first retainer 25, the second retainer 26, and the core wire 30 are fixed to the insulator 27. Preferably, a tool is inserted into the insertion portion 26b of the second retainer 26 to screw the second retainer 26 in. In this way, the second retainer 26 can be easily screwed in and fixed to the first penetration portion 27a of the insulator 27.

[0202] The housing 29 is preferably fixed to the insulator 27 in advance. Thereafter, the resin member 28 is introduced into the second penetration portion 27 b of the insulator 27 , thereby assembling the receptacle connector 22 .

[0203] An example of the assembly process of the pin connector 23 of the connector unit 21 according to the present embodiment is described below. First, the contact 32 is passed through the pin terminal 31 and fixed thereto, and the end of the core wire 43a of the wire 43 on the negative side in the y-axis direction is electrically connected to the tubular portion 31c of the pin terminal 31. Next, the pin terminal 31 and the wire 43 are inserted into the flange portion 39b of the second housing 39 through the insulating member 40, and the insulating member 43d of the wire 43 is stripped to expose the ground shield 43c.

[0204] Next, the pin terminal 31, the core wire 43a of the wire 43, and the dielectric member 43b are inserted into the flange portion 38b of the first housing 38. In this step, the ground shield 43c of the wire 43 is arranged between the first housing 38 and the second housing 39.

[0205] Then, the first housing 38 is inserted into the second housing 39 so that the ground shield 43c of the wire 43 is located between the first housing 38 and the second housing 39, and the spacer 44 is interposed between the first housing 38 and the second housing 39. In this step, the core wire 43a and the dielectric member 43b of the wire 43 are pulled toward the negative direction side of the y-axis so that the following steps are performed on the first housing 38 and the second housing 39.

[0206] After that, the pin terminal 31, the core wire 43a of the wire 43, and the dielectric member 43b are passed through the first penetration portion 35a and the second penetration portion 35b of the insulator 35, and the core wire 43a of the wire 43 and the dielectric member 43b are exposed from the insulator 35 on the negative side of the y-axis. This step is preferably performed by mounting the third housing 41 and the fourth housing 42 on the insulator 35.

[0207] Then, the pin terminal 31 and the first holder 33 are integrally molded by insert molding, and the pin terminal 31 is covered with the first holder 33. Thereafter, the first holder 33 is inserted into the second holder 34 so that the second holder 34 covers the first holder 33.

[0208] Then, the recessed portion 36d of the first divided piece 36a of the biasing member 36 is inserted into the small diameter portion 34c of the second holder 34 from the positive direction side of the z-axis, and the insertion portion 36e of the first divided piece 36a is inserted into the insertion portion 34f of the second holder 34. Furthermore, the protruding portion 36f of the first divided piece 36a is engaged with the recessed portion 34g of the second holder 34, thereby fixing the first divided piece 36a to the second holder 34.

[0209] Likewise, the recessed portion 36d of the second split piece 36b of the biasing member 36 is inserted from the negative z-axis direction side into the small diameter portion 34c of the second holder 34, and the insertion portion 36e of the second split piece 36b is inserted into the insertion portion 34f of the second holder 34. Furthermore, the protruding portion 36f of the second split piece 36b is engaged with the recessed portion 34g of the second holder 34, thereby fixing the second split piece 36b to the second holder 34.

[0210] Since the biasing member 36 has such a split structure, even after the wire 43 is inserted into the first housing 38 and the second housing 39 and the pin terminal 31 is insert-molded in the first retainer 33, the first retainer 33 in which the pin terminal 31 is insert-molded can be easily surrounded by the biasing member 36. Thus, the first split piece 36a and the second split piece 36b are fixed to the second retainer 34 in a state of surrounding the extension portion 33c of the first retainer 33.

[0211] Then, the lead wire 43 is pulled toward the positive direction of the y-axis. In addition, the pin terminal 31, the first retainer 33, the second retainer 34, and the biasing member 36 are pulled into the first penetration portion 35a and the second penetration portion 35b of the insulator 35, and the external thread 34a of the second retainer 34 is screwed into the internal thread 35e of the insulator 35, so that the end of the biasing member 36 on the positive direction side of the y-axis contacts the first step portion 35f of the insulator 35.

[0212] It is preferred to insert a tool into the insertion portion 34 b of the second retainer 34 to screw the second retainer 34 in. This makes it possible to easily screw and fix the second retainer 34 into the first penetration portion 35 a of the insulator 35 .

[0213] In this step, the flange portion 33b of the first holder 33 is placed between the biasing member 36 and the second holder 34. The biasing member 36 is placed between the second holder 34 and the first step portion 35f of the insulator 35. In addition, the pin terminal 31 is fixed to the first holder. Thus, the pin terminal 31 and the first holder 33 are fixed to the insulator 35.

[0214] In this state, the resin 37 is introduced into the first penetration portion 35a of the insulator 35. Since the pin terminal 31 and the first retainer 33 are fixed to the insulator 35 as described above, it is not necessary to fix the lead wire 43 with a clamp or the like to prevent the pin terminal 31 and the first retainer 33 from moving in the y-axis direction before the resin 37 is cured, so that the pin terminal 31 can be easily and accurately arranged.

[0215] Then, the insulator 35 to which the lead wire 43, the pin terminal 31, etc. are fixed is pulled toward the positive direction of the y-axis. At the same time, a portion of the insulator 35 on the positive direction of the y-axis is inserted into the first housing 38, and the external thread 41a of the third housing 41 is screwed into the internal thread 39c of the second housing 39 to insert a portion of the third housing 41 on the positive direction of the y-axis between the insulator 35 and the second housing 39.

[0216] Then, the x-axis insulating member 40 is placed between the insertion parts 45 of the flat portions 39 d extending across the z-axis wires 43 in the second housing 39 , and the wires 43 are fixed to the second housing 39 , thereby assembling the pin connector 23 .

[0217] The following describes the connection process of the socket connector 22 and the pin connector 23 of the connector unit 21 according to this embodiment. Fig.14 and Fig.15As shown, a portion of the insulator 27 on the radially inner side of the insertion portion 27c of the insulator 27 in the socket connector 22 is connected to the second penetration portion 35b of the insulator 35 in the pin connector 23, and further a portion of the insulator 27 on the positive side of the y-axis in the socket connector 22 is inserted into the first insertion portion 35c of the insulator 35 in the pin connector 23.

[0218] At the same time, if Fig.14 and Fig.15 As shown, a portion of the insulator 35 on the negative side of the y-axis in the pin connector 23 is inserted into the insertion portion 27c of the insulator 27 in the socket connector 22, and further a portion of the third shell 41 on the negative side of the y-axis is inserted into the insertion portion 29d of the shell 29 in the socket connector 22.

[0219] In this step, the protrusion 41b of the third housing 41 in the pin connector 23 is inserted into the recess 29e of the housing 29 in the receptacle connector 22. This prevents relative displacement of the receptacle connector 22 and the pin connector 23 about the y-axis.

[0220] Then, if Fig.14 and Fig.15 As shown, a portion of the pin terminal 31 on the negative side in the y-axis direction and the contact 32 of the pin connector 23 are inserted into the first insertion portion 24 e of the socket terminal 24 of the socket connector 22 .

[0221] In addition, if Fig.14 and Fig.15 As shown, the end of the first retaining member 33 on the negative side of the y-axis in the pin connector 23 is inserted into the insertion portion 25b of the first retaining member 25 in the socket connector 22, so that the end face 33d of the first retaining member 33 on the negative side of the y-axis in the pin connector 23 contacts the end face 24g of the socket terminal 24 on the positive side of the y-axis in the socket connector 22.

[0222] At the same time, if Fig.14 and Fig.15 As shown, the end surface 33d on the negative side in the y-axis direction of the first holder 33 in the pin connector 23 is brought into contact with the end surface 25c of the insertion portion 25b on the negative side in the y-axis direction of the first holder 25 in the receptacle connector 22. In addition, the outer peripheral surface of the tubular portion 33a of the first holder 33 in the pin connector 23 is brought into contact with the peripheral surface of the insertion portion 25b of the first holder 25 in the receptacle connector 22.

[0223] Since the first retaining member 33 in the pin connector 23 is made of elastic material, the end face 33d on the negative side of the y-axis of the first retaining member 33 in the pin connector 23 is in close contact with the end face 24g on the positive side of the y-axis of the socket terminal 24 in the socket connector 22, thereby realizing an airtight structure.

[0224] At the same time, the end surface 33d on the negative y-axis direction side of the first retainer 33 in the pin connector 23 is in close contact with the end surface 25c of the insertion portion 25b on the negative y-axis direction side of the first retainer 25 in the socket connector 22, thereby realizing an airtight structure. In addition, the outer peripheral surface of the tubular portion 33a of the first retainer 33 in the pin connector 23 is in close contact with the peripheral surface of the insertion portion 25b of the first retainer 25 in the socket connector 22, thereby realizing an airtight structure.

[0225] Furthermore, the outer peripheral surface of the socket terminal 24 in the socket connector 22 is covered by the first holder 25 in an airtight manner to achieve an airtight structure, and the outer peripheral surface of the pin terminal 31 in the pin connector 23 is covered by the first holder 33 in an airtight manner to achieve an airtight structure.

[0226] Then, the fourth housing 42 of the pin connector 23 is rotated, and the internal thread 42 a of the fourth housing 42 is screwed into the external thread 29 c of the housing 29 in the socket connector 22 , thereby connecting the socket connector 2 and the pin connector 3 .

[0227] At this time, the biasing member 36 applies a force toward the negative direction of the y-axis to the first retaining member 33, and at the same time applies a reaction force to the first step portion 35f of the insulator 35, so that the end face 33d of the first retaining member 33 on the negative direction side of the y-axis in the pin connector 23 contacts the end face 24g of the socket terminal 24 on the positive direction side of the y-axis in the socket connector 22, and further contacts the end face 33d of the first retaining member 33 on the negative direction side of the y-axis in the pin connector 23 contacts the end face 25c of the insertion portion 25b of the first retaining member 25 on the negative direction side of the y-axis in the socket connector 22.

[0228] In this way, through the above-mentioned airtight structure, the connector unit 21 according to the present embodiment can also control partial discharge in the connection state of the socket connector 22 and the pin connector 23. The connector unit 21 according to the present embodiment adopts an elastic member as the first retaining member 33 that retains the pin terminal 31 of the pin connector 23.

[0229] This eliminates the need to prepare sealing packing in addition to the first retainer 25 of the socket connector 22 and the first retainer 33 of the pin connector 23, thereby achieving an airtight structure around the socket terminal 24 and the pin terminal 31 in the connected state of the socket connector 22 and the pin connector 23, and the airtight structure around the socket terminal 24 and the pin terminal 31 can be achieved with a small number of parts compared to the connector unit 100 of Patent Document 1. This enables the connector unit 21 according to the present embodiment to be reduced in size and manufactured at a lower cost and with a simpler process compared to the connector unit 100 according to Patent Document 1.

[0230] In particular, since the biasing member 36 is configured as a split structure in the connector unit 21 according to the present embodiment, the first holder 33 in which the pin terminal 31 is insert-molded is allowed to be easily surrounded by the biasing member 36 .

[0231] In addition, in the connector unit 21 according to the present embodiment, when the first retaining member 33 to which the pin terminal 31 is fixed is placed between the biasing member 36 and the second retaining member 34 and fixed to the insulator 35, for example, before the resin member 37 is cured, there is no need to fix the wire 43 with a clamp or the like to prevent the pin terminal 31 and the first retaining member 33 from moving in the y-axis direction, thereby enabling the pin terminal 31 to be easily and accurately configured.

[0232] It should be noted that the structures of the socket connector 22 and the pin connector 23 according to the present embodiment are merely exemplary, and they may have any structure as long as the first retaining member 33 of the pin connector 23 is an elastic member, and when the socket connector 22 and the pin connector 23 are connected, the end face 33d of the first retaining member 33 on the negative side of the y-axis in the pin connector 23 contacts the end face 24g of the socket terminal 24 on the positive side of the y-axis in the socket connector 22, and further the end face 33d of the first retaining member 33 on the negative side of the y-axis in the pin connector 23 contacts the end face 25c of the insertion portion 25b of the first retaining member 25 on the negative side of the y-axis in the socket connector 22, and the biasing member 36 has a split structure.

[0233] In addition, the assembly process of the socket connector 22 and the pin connector 23 according to the present embodiment is only exemplary, and the assembly sequence is not particularly limited.

[0234] From the above disclosure, it is obvious that the multiple embodiments of the present invention can be changed in many ways. These changes should not be regarded as departing from the spirit and scope of the present invention, and all such modifications obvious to those skilled in the art are intended to be included in the scope of the appended claims.

Claims

1. A connector unit, characterized in that: The connector unit comprises: A socket connector including a socket terminal and a socket-side holder configured to cover an outer peripheral surface of the socket terminal in an airtight manner; and A pin connector, comprising a pin terminal connected to the socket terminal and a pin-side retainer, the pin-side retainer being configured to cover the outer peripheral surface of the pin terminal in an airtight manner, wherein: The socket-side retainer includes a recessed portion formed to surround an end surface of the socket terminal on the connection side connected to the pin connector, and the pin-side retainer is inserted into the recessed portion at an end portion on the connection side connected to the socket connector when the socket connector and the pin connector are connected. The pin-side retaining member is made of elastic material, and When the socket connector is connected to the pin connector, in the recess of the socket side retainer, the end surface of the socket terminal on the connection side connected to the pin connector contacts the pin side retainer, and the end of the pin side retainer on the connection side connected to the socket connector contacts the bottom surface of the recess of the socket side retainer.

2. The connector unit according to claim 1, characterized in that: In a state where the socket connector and the pin connector are connected, a peripheral surface of the end portion of the pin-side holder on the connection side connected to the socket connector contacts a peripheral surface of the recess of the socket-side holder.

3. The connector unit according to claim 1 or 2, characterized in that: In the recessed portion of the socket-side holder, the end surface of the socket terminal on the connection side to be connected to the pin connector and the bottom surface of the recessed portion of the socket-side holder are flush with each other.

4. The connector unit according to claim 1 or 2, characterized in that: The pin connector includes a biasing member, which is configured to apply a force to the pin side retaining member toward the connection side connected to the socket connector when the socket connector and the pin connector are connected and the pin side retaining member is pushed to the side opposite to the connection side connected to the socket connector.

5. The connector unit according to claim 4, characterized in that: The pin-side retainer includes a flange portion, and the flange portion is urged by the biasing member.

6. The connector unit according to claim 1 or 2, characterized in that: The socket-side retainer is integrally formed with the socket terminal by insert molding.

7. The connector unit according to claim 6, characterized in that: The socket terminal has a flange portion, and the socket-side retainer is formed to cover the flange portion of the socket terminal.

8. The connector unit according to claim 1 or 2, characterized in that: The pin-side retainer is integrally formed with the pin terminal by insert molding.

9. A connector unit, characterized in that: The connector unit comprises: A socket connector including a socket terminal and a socket-side holder configured to cover an outer peripheral surface of the socket terminal in an airtight manner; and A pin connector, comprising a pin terminal connected to the socket terminal; a first pin side retainer configured to cover the outer peripheral surface of the pin terminal in an airtight manner; and a biasing member configured to apply a force to the first pin side retainer toward the connection side connected to the socket connector when the first pin side retainer is pushed to the side opposite to the connection side connected to the socket connector, wherein: The socket-side retainer includes a recessed portion formed to surround an end surface of the socket terminal on a connection side connected to the pin connector, and the first pin-side retainer is inserted into the recessed portion at an end portion on the connection side connected to the socket connector in a state where the socket connector and the pin connector are connected. The first pin-side retaining member is made of elastic material, In a state where the socket connector is connected to the pin connector, in the recess of the socket side retainer, the end surface of the socket terminal on the connection side connected to the pin connector contacts the first pin side retainer, and the end of the first pin side retainer on the connection side connected to the socket connector contacts the bottom surface of the recess of the socket side retainer. The first pin-side retainer includes a flange portion, the flange portion is pushed by the biasing member; and an extension portion, the extension portion extending relative to the flange portion to the side opposite to the connection side connected to the socket connector, and The biasing member includes a plurality of divided pieces and is disposed to surround the extending portion of the first pin-side retaining member.

10. The connector unit according to claim 9, characterized in that: The connector unit includes: a second pin-side retainer configured to retain the first pin-side retainer; an insulator having a penetration portion for inserting the second pin-side retaining member that retains the first pin-side retaining member; and a resin member inserted into a portion of the penetration portion of the insulator on the side opposite to the connection side connected to the receptacle connector with respect to the second pin-side retaining member; wherein the biasing member is disposed between the second pin-side retainer and a step portion formed in the penetration portion of the insulator.

11. The connector unit according to claim 10, characterized in that: The split piece of the biasing member includes a joint portion, The second pin-side retainer includes an engaging portion that engages with an engaging portion of the biasing member, and In a state where the engaging portion of the split piece of the biasing member is engaged with the engaging portion of the second pin-side retaining member, the split piece of the biasing member is fixed to surround the extending portion of the first pin-side retaining member.

12. The connector unit according to claim 9 or 10, characterized in that: In a state where the socket connector and the pin connector are connected, a peripheral surface of the end portion of the first pin-side retainer on the connection side connected to the socket connector contacts a peripheral surface of the recess of the socket-side retainer.

13. The connector unit according to claim 9 or 10, characterized in that: In the recessed portion of the socket-side holder, the end surface of the socket terminal on the connection side to be connected to the pin connector and the bottom surface of the recessed portion of the socket-side holder are flush with each other.

14. The connector unit according to claim 9 or 10, characterized in that: The socket-side retainer is integrally formed with the socket terminal by insert molding.

15. The connector unit according to claim 14, characterized in that: The socket terminal includes a flange portion, and the socket-side retainer is formed to cover the flange portion of the socket terminal.

16. The connector unit according to claim 9 or 10, characterized in that: The first pin-side retainer is integrally formed with the pin terminal by insert molding.

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