JP2017174625A - Coaxial connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To aim for a further lower profile of a coaxial connector.SOLUTION: A ground contact conductor 200 has a cylindrical body 202 extending along an axis Ax, external terminals 204A, 204D provided closely to a wiring board, out of the body 202, in the axis Ax direction integrally therewith, while being bent for the body 202, and connected with the wiring board on the tip side, and a locking part 206A provided at the bottom edge 202b of the body 202. The external terminals 204A, 204D include principal surfaces S3, S4. The principal surface S3 is directed toward the wiring board side. The principal surface S4 is directed toward the opposite side to the wiring board for the principal surface S3. The position of the tip of the locking part 206A in the axis Ax direction is the same as the principal surface S4, or closer to the principal surface S3 side than the principal surface S4.SELECTED DRAWING: Figure 12

Description

  The present disclosure relates to a coaxial connector mounted on a wiring board (for example, a printed board such as a rigid board, a flexible printed board, and a rigid flexible board) on which various wirings are formed.

  In general, a large number of coaxial cables are wired inside a small terminal such as a cellular phone in order to connect wiring boards to each other and transmit a high-frequency signal therebetween. In addition, wiring boards are directly connected inside a small terminal. Patent Document 1 discloses a plug connector mounted on a wiring board as an example of a connector that electrically connects the wiring boards.

  The plug connector of Patent Document 1 includes an insulating housing, a signal contact conductor, and a ground contact conductor. A through hole through which the signal contact conductor can be inserted is provided at the center of the insulating housing. On the outer peripheral surface of the insulating housing, a pair of locking projections that project in the direction of radiation of the outer peripheral surface is provided.

  The ground contact conductor has a cylindrical main body portion extending along a predetermined axis and a pair of external terminal portions. The pair of external terminal portions are bent by approximately 90 ° with respect to the main body portion, and are integrally connected to one end edge in the axial direction of the main body portion. The main body portion is provided with a pair of locking pieces. The pair of locking pieces respectively engage with corresponding locking protrusions of the insulating housing. The pair of locking pieces are positioned so as to be adjacent to the base end portion of the external terminal portion in the axial direction. That is, in the axial direction, the base end portion and the locking piece of the external terminal portion are located side by side at different height positions.

  In assembling the plug connector of Patent Document 1, an insulating housing is inserted into the main body of the ground contact conductor. At this time, each locking piece abuts on the corresponding locking projection and deforms while overcoming the locking projection and is locked with the locking projection. As a result, the ground contact conductor is attached to the insulating housing.

JP 2013-187015 A

  In recent years, further miniaturization of small terminals such as mobile phones has progressed. Therefore, the inside of a small terminal is narrowed, and the coaxial connector is required to be further reduced in height. Specifically, a connector having a height of 1 mm or less after fitting between a plug connector and a receptacle connector has appeared.

  By the way, when the plug connector and the receptacle connector are fitted, the upper end edge in the axial direction of the main body portion of the ground contact conductor (on the side opposite to the wiring board at the time of mounting) from the viewpoint of stably maintaining the fitting of both connectors. It is preferable that the linear distance between the end located at the fitting port and the engaging projection of the insulating housing is not less than a predetermined length (see FIG. 8 of Patent Document 1). On the other hand, in order to reduce the height of the plug connector of Patent Document 1, it is desirable to dispose the locking piece of the ground contact conductor and the locking protrusion of the insulating housing as close to the external terminal portion (close to the wiring board) as possible. . However, in the plug connector of Patent Document 1, the base end portion is bent, and it is difficult to form a locking piece in the vicinity thereof. That is, conventionally, there is a contradictory relationship between stabilization after fitting the plug connector and the receptacle connector and reduction in height after fitting both the connectors, and it has been desired to achieve both of them.

  Thus, the present disclosure describes a coaxial connector that can further reduce the height.

  [1] A coaxial connector according to one aspect of the present disclosure includes a signal contact conductor, a ground contact conductor, and an insulating housing that insulates between the signal contact conductor and the ground contact conductor, and is fitted with a mating connector. The coaxial connector is configured to be compatible with each other and mounted on the wiring board. The insulating housing has a base portion provided with a receiving hole for receiving the signal contact conductor therein and a locked portion. The ground contact conductor is integrally provided near the wiring board in the axial direction of the cylindrical main body extending along a predetermined axis, is bent with respect to the main body, and the tip side is connected to the wiring board. At least one external terminal portion and at least one locking portion that is integrally provided near the wiring board in the axial direction in the main body portion and configured to be locked with the locked portion. The external terminal portion includes a pair of first and second main surfaces. The first main surface faces the wiring board side. The second main surface faces away from the wiring board. The position of the front end of the locking portion in the axial direction is the same as the second main surface or is closer to the first main surface than the second main surface.

  In the coaxial connector according to one aspect of the present disclosure, the ground contact conductor has at least one locking portion integrally provided near the wiring board in the axial direction in the main body portion, and is provided at the tip of the locking portion. The position in the axial direction is the same as the second main surface, or is closer to the first main surface than the second main surface. Therefore, as compared with the prior art, the height position of the locking portion approaches the height position of the external terminal portion, so that the coaxial connector can be further reduced in height.

  [2] In the coaxial connector as described in the above item 1, the ground contact conductor has a pair of engaging portions integrally provided at one end edge in the axial direction of the main body portion. The slit extending along the axial direction is provided, and the pair of locking portions are substantially lined with respect to the first virtual straight line that connects the shaft and the slit and extends parallel to the wiring board when viewed from the axial direction. You may arrange | position in the position which becomes symmetrical. In this case, the base portion of the insulating housing can be held in a balanced manner by the pair of locking portions.

  [3] In the coaxial connector according to the second aspect, the pair of locking portions are located on a second imaginary straight line that is orthogonal to both the shaft and the first imaginary straight line when viewed from the axial direction. At the same time, the axes may be opposed to each other. In this case, the base portion of the insulating housing can be held in a balanced manner by the pair of locking portions. Further, when the mating connector is fitted to the coaxial connector, the portion of the main body portion where the locking portion is located is relatively difficult to expand, so that the insulation housing can be prevented from falling off from the locking portion. Become.

  [4] In the coaxial connector according to the second or third aspect, the insulating housing further includes a wall portion extending in the axial direction and disposed outside the base portion, and the main body portion is formed on the outer peripheral surface of the base portion. It is attached to the base part so as to surround a part, and the wall part covers the slit and the area in the vicinity of the slit in the main body part from the outside, and is pushed outward by fitting with the mating connector. It may be configured to be able to come into contact with the region of the main body portion. In this case, when the mating connector is fitted to the coaxial connector, the slit tends to be opened widely, but since the region in the vicinity of the slit in the main body is pressed by the wall, the expansion of the slit is suppressed. . Therefore, a sufficient biasing force is applied from the main body portion to the mating connector, so that the fitting between the main body portion and the mating connector can be easily maintained.

  [5] In the coaxial connector according to any one of the second to fourth aspects, the ground contact conductor is integrally provided on one end edge in the axial direction of the main body portion, and is arranged in order around the axis. The first to fourth external terminal portions are arranged, and one of the pair of locking portions is located between the first and fourth external terminal portions, The other of them may be located between the second and third external terminal portions. In this case, since the first to fourth external terminal portions and the pair of locking portions are unlikely to interfere with each other, it is necessary that the first to fourth external terminal portions be shaped to avoid the pair of locking portions. Without increasing the size of the first to fourth external terminal portions. Therefore, the coaxial connector can be reduced in size.

  [6] In the coaxial connector according to any one of the first to fifth aspects, the locking portion includes a locking piece protruding from the main body portion toward the shaft, and the locked portion is the locking piece. You may have a ditch | groove inserted inside.

  According to the coaxial connector according to the present disclosure, it is possible to further reduce the height.

FIG. 1 is a perspective view of the plug connector as viewed from the front upper side. FIG. 2 is a perspective view of the plug connector as viewed from the rear upper side. FIG. 3 is a perspective view of the plug connector as viewed from the front lower side. FIG. 4 is a top view showing the plug connector. FIG. 5 is a bottom view showing the plug connector. 6 is a sectional view taken along line VI-VI in FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 is a perspective view of the insulating housing as viewed from the front upper side. FIG. 9 is a perspective view of the insulating housing as seen from the front lower side. FIG. 10 is a perspective view of the ground contact conductor as viewed from the upper front side. FIG. 11 is a perspective view of the ground contact conductor as viewed from the upper rear side. FIG. 12 is a side view showing the ground contact conductor. FIG. 13 is a perspective view of the signal contact conductor as viewed from the upper front side. FIG. 14 is a perspective view of the signal contact conductor as viewed from the upper rear side. FIG. 15 is a perspective view of the signal contact conductor as viewed from the front lower side. 16 is a cross-sectional view taken along line XVI-XVI in FIG. FIG. 17 is a view for explaining a method of mounting the plug connector on the wiring board. FIG. 18 is a view for explaining a method of connecting the plug connector and the receptacle connector. FIG. 19 is a perspective view of another example of the ground contact conductor as seen from the upper rear side. FIG. 20 is a perspective view of another example of the signal contact conductor as viewed from the front upper side. FIG. 21 is a perspective view of another example of the signal contact conductor as viewed from the lower front side. FIG. 22 is a perspective view of another example of the insulating housing as viewed from the front lower side.

  Since the embodiment according to the present disclosure described below is an example for explaining the present invention, the present invention should not be limited to the following contents. In the following description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

[Plug connector]
The plug connector 1 is a coaxial connector mounted on a wiring board CB1 (see FIGS. 17 and 18) on which various wirings are formed. As shown in FIGS. 1 to 7, the plug connector 1 includes an insulating insulating housing 100, a conductive ground contact conductor 200, and a conductive signal contact conductor 300.

  The plug connector 1 is configured to be able to fit and remove from a receptacle connector 2 (see FIG. 18) mounted on the wiring board CB2 (see FIG. 18). Examples of the wiring boards CB1 and CB2 include printed boards such as rigid boards, flexible printed boards, and rigid flexible boards. In this specification, the side where the plug connector 1 and the receptacle connector 2 are mounted on the wiring boards CB1 and CB2, respectively, is “lower”, and the opposite side is “upper”.

[Insulated housing]
The insulating housing 100 is formed by, for example, injection molding an insulating material such as resin. The insulating housing 100 is configured to insulate between the ground contact conductor 200 and the signal contact conductor 300. As shown in FIGS. 1 to 9, the insulating housing 100 includes a base portion 102, a protruding portion 104, and a wall portion 106.

  The base portion 102 is a columnar member that extends in the vertical direction. As shown in FIGS. 1 to 9, the base portion 102 is provided with a receiving hole 108, a pair of locking protrusions 110 </ b> A and 110 </ b> B, and a fitting groove 112 (second fitting groove). . The accommodation hole 108 is configured to accommodate a connection piece 304 (described later) of the signal contact conductor 300 therein. Therefore, the insulating housing 100 can hold a part of the signal contact conductor 300 inside. The accommodation hole 108 extends in the vertical direction through the base portion 102. In this embodiment, the accommodation hole 108 is a through hole that penetrates the base portion 102 in the vertical direction. Therefore, in this embodiment, the base part 102 is a cylindrical body extended along the predetermined axis Ax direction.

  The locking projections 110 </ b> A and 110 </ b> B are located near the lower end of the base portion 102. The locking projections 110 </ b> A and 110 </ b> B protrude outward from the outer surface of the base portion 102. The locking protrusions 110A and 110B are disposed at positions that are substantially point-symmetric with respect to the axis Ax of the base portion 102 when viewed from above. Accordingly, the locking protrusions 110A and 110B are opposed to each other with respect to the axis Ax. That is, the locking protrusions 110A and 110B are located on a virtual straight line VL1 (second virtual straight line) extending perpendicularly to the axis Ax and parallel to the wiring board CB1 when viewed from the direction of the axis Ax, and the axis Ax Are facing each other.

  A flange 114 is provided near the lower end of the base portion 102. The flange 114 has an annular shape centered on the axis Ax, and projects outward from the base portion 102. As shown in FIGS. 3, 5, and 7 to 9, the flange 114 is formed with a pair of notches 116 </ b> A and 116 </ b> B (locked portions) at positions corresponding to the lock protrusions 110 </ b> A and 110 </ b> B, respectively. ing. The pair of cutouts 116 </ b> A and 116 </ b> B are opened from the outer peripheral surface of the base portion 102 toward the side and are opened downward from the bottom surface of the base portion 102.

  A portion of the flange 114 adjacent to the notch 116A in the axis Ax direction (vertical direction) functions as the locking protrusion 110A. A portion of the flange 114 adjacent to the notch 116B in the axis Ax direction (vertical direction) functions as the locking protrusion 110B. That is, it can be said that the locking protrusions 110 </ b> A and 110 </ b> B are part of the flange 114.

  As shown in FIGS. 3, 6, and 9, the fitting groove 112 is provided in the base portion 102. The fitting groove 112 is adjacent to the accommodation hole 108. The fitting groove 112 extends along the axis Ax direction and is recessed from the lower end of the base portion 102 toward the upper end side. Therefore, the opening of the fitting groove 112 is opened toward the lower surface side of the base portion 102. A bent piece 306 (described later) of the signal contact conductor 300 is inserted into the fitting groove 112. The size of the fitting groove 112 is set to be smaller than that of the bent piece 306, and the fitting groove 112 and the bent piece 306 are fitted together by press-fitting the bent piece 306 into the fitting groove 112.

  The protruding portion 104 protrudes outward from the base portion 102. Specifically, the protrusion 104 protrudes along a virtual straight line VL2 (first virtual straight line) that is orthogonal to both the axis Ax and the virtual straight line VL1 and extends in parallel with the wiring board CB1. The virtual straight line VL2 is also a direction orthogonal to the extending direction of the accommodation hole 108. Therefore, in other words, the protruding portion 104 protrudes from the base portion 102 along a direction orthogonal to the extending direction of the accommodation hole 108. A lower end portion of the protruding portion 104 is integrally connected to a lower end portion of the base portion 102. In this specification, the side on which the protruding portion 104 protrudes from the base portion 102 is referred to as “rear”.

  The protruding portion 104 includes a pair of protruding pieces 104A and 104B. The pair of projecting pieces 104A and 104B project separately from the base portion 102 in the extending direction of the virtual straight line VL2. In other words, the protruding direction of the protruding portion 104 is the extending direction of the virtual straight line VL2. The pair of protruding pieces 104A and 104B are opposed to each other in the extending direction of the virtual straight line VL1. The protruding piece 104A (first protruding piece) has an outer surface S1 facing outward in the extending direction of the virtual straight line VL1. The protruding piece 104B (second protruding piece) has an outer surface S2 facing outward in the extending direction of the virtual straight line VL1.

  The wall portion 106 is disposed outside the base portion 102 and extends in the axis Ax direction. The wall portion 106 protrudes outward from the base portion 102 on the side opposite to the protruding portion 104 with respect to the axis Ax. That is, the wall part 106 protrudes along the virtual straight line VL2. The lower end portion of the wall portion 106 is integrally connected to the lower end portion of the base portion 102. In the present specification, the side from which the wall portion 106 protrudes with respect to the base portion 102 is referred to as “front”.

  As shown in FIGS. 3, 5, 6, and 9, an accommodation groove 118 is provided on the bottom surface of the insulating housing 100. The housing groove 118 extends from the housing hole 108 of the base portion 102 to the front end of the wall portion 106 in the extending direction of the virtual straight line VL2. In other words, the accommodation groove 118 extends from the accommodation hole 108 toward the side opposite to the fitting groove 112. The accommodating groove 118 functions as a space for accommodating a terminal piece 302 (described later) of the signal contact conductor 300.

  A pair of protrusions 120 are provided on both side walls of the accommodation groove 118. The pair of protrusions 120 face each other in the extending direction of the virtual straight line VL1. The separation distance between the pair of protrusions 120 is set to be slightly smaller than the width of the terminal piece 302 of the signal contact conductor 300.

[Ground contact conductor]
The ground contact conductor 200 is formed by stamping and bending a metal plate having conductivity and elasticity. The surface of the metal plate may be subjected to metal plating such as nickel, silver, and gold. As shown in FIGS. 1 to 7, the ground contact conductor 200 is attached to the insulating housing 100 so as to be located outside the base portion 102. As shown in FIGS. 1 to 7 and FIGS. 10 to 12, the ground contact conductor 200 includes a main body portion 202, external terminal portions 204 </ b> A to 204 </ b> D, and locking portions 206 </ b> A and 206 </ b> B.

  The main body 202 is a cylindrical body that extends along the axis Ax. In the present embodiment, the main body portion 202 is disposed coaxially with the axis Ax of the base portion 102 so as to partially cover the outer peripheral surface of the base portion 102. In addition, when the later-described slit SL is not provided in the main body portion 202, the main body portion 202 may entirely cover the outer peripheral surface of the base portion 102. The main body 202 is attached to the base 102 via the locking portions 206A and 206B.

  The main body 202 is provided with a slit SL and a bridge 208. The slit SL extends along the axis Ax direction. That is, the main body 202 has an arc shape when viewed from the direction of the axis Ax. The main body 202 can be fitted to the receptacle connector 2 so as to cover the outside of the ground contact conductor 2b (see FIG. 18) of the receptacle connector 2. The main body 202 may be fitted to the receptacle connector 2 so as to be covered from the outside by the ground contact conductor 2b of the receptacle connector 2.

  The slit SL is disposed so as to face the wall portion 106. That is, the slit SL is located in the front. The direction in which the slit SL, the axis Ax, and the protrusion 104 are aligned is also the extending direction of the virtual straight line VL2. The slit SL and the region R (see FIGS. 1, 2, 4, 6, 10, and 11) in the vicinity of the slit SL in the main body 202 are covered with the wall 106 from the outside. When the main body 202 is engaged with the receptacle connector 2, the gap between the slits SL is widened, and the region R in the vicinity of the slit SL in the main body 202 is particularly elastically deformed. Therefore, when the main body portion 202 (region R) is pushed outward by the fitting of the plug connector 1 and the receptacle connector 2, the region R contacts the wall portion 106.

  The upper end edge 202a of the main body 202 (the other end of the main body 202 in the axis Ax direction) is bent after being reduced in diameter radially inward of the axis Ax as it goes from the lower side to the upper side. The diameter is increased toward the outside in the radial direction. That is, the upper edge 202a has a substantially C shape when cut along a virtual plane including the axis Ax.

  The bridge 208 is a portion that connects a carrier of a lead frame (not shown) and the ground contact conductor 200 when the ground contact conductor 200 is punched and bent from a metal plate. The bridge 208 is cut and separated from the carrier in the final process of processing the ground contact conductor 200. In the present embodiment, the bridge 208 is disposed on the upper end edge 202a side of the main body portion 202 and between the pair of protruding pieces 104A and 104B (between the external terminal portions 204A and 204B). That is, the bridge 208 is located rearward.

  All of the external terminal portions 204A to 204D are plate-shaped bodies. The external terminal portions 204A to 204D are integrally provided on the lower end edge 202b of the main body portion 202 (one end edge in the axis Ax direction of the main body portion 202). The external terminal portions 204A to 204D are arranged so as to be arranged in this order around the axis Ax (clockwise as viewed from above in the present embodiment). Specifically, the external terminal portion 204A (first external terminal portion) and the external terminal portion 204B (second external terminal portion) are opposite to the slit SL with respect to the axis Ax, and the bridge 208 is Arranged to be in between. As shown in FIGS. 1 to 5, in a state where the ground contact conductor 200 is attached to the insulating housing 100, the external terminal portion 204 </ b> A and the external terminal portion 204 </ b> B face each other with the protruding portion 104 therebetween. The external terminal portion 204B and the external terminal portion 204C (third external terminal portion) are arranged so that the locking portion 206B is interposed therebetween. The external terminal portion 204C and the external terminal portion 204D (fourth external terminal portion) are disposed on the slit SL side with respect to the axis Ax so that the slit SL is interposed therebetween. The external terminal portion 204D and the external terminal portion 204A are arranged so that the locking portion 206A is interposed therebetween.

  External terminal portions 204 </ b> A to 204 </ b> D are each bent with respect to main body portion 202 so as to protrude outward from main body portion 202. The external terminal portions 204A to 204D include a pair of main surfaces S3 and S4 that are substantially orthogonal to the axis Ax. The main surface S3 (first main surface) faces the wiring substrate CB1 side in a state where the plug connector 1 is mounted on the wiring substrate CB1. That is, the main surface S3 is the lower surface of the external terminal portions 204A to 204D. The main surface S4 (second main surface) faces the side opposite to the wiring board CB1 (the upper end edge 202a side of the main body 202). That is, the main surface S4 is the upper surface of the external terminal portions 204A to 204D.

  External terminal portions 204A and 204B include inner side surfaces S5 and S6 that face each other in the extending direction of virtual straight line VL1. As shown in FIGS. 1 to 5, in a state where the ground contact conductor 200 is attached to the insulating housing 100, the inner side surface S <b> 5 of the external terminal portion 204 </ b> A is opposed to the outer side surface S <b> 1 of the protruding piece 104 </ b> A. Yes. In a state where the ground contact conductor 200 is attached to the insulating housing 100, the inner side surface S6 of the external terminal portion 204B is opposed to the outer side surface S2 of the protruding piece 104B. That is, in a state where the ground contact conductor 200 is attached to the insulating housing 100, the inner side surfaces S5 and S6 are opposed to the outer side surfaces S1 and S2 of the protruding portion 104, respectively. The distance between the outer surface S1 and the inner surface S5 and the distance between the outer surface S2 and the inner surface S6 may be, for example, about 0.03 mm to 0.1 mm. Alternatively, the outer surface S1 and the inner surface S5 may be in contact with each other, or the outer surface S2 and the inner surface S6 may be in contact with each other.

  External terminal portions 204 </ b> A to 204 </ b> D each include a proximal end portion 210 and a distal end portion 212. The base end portion 210 is integrally connected to the lower end edge 202 b of the main body portion 202 and is also a bent portion that is bent with respect to the lower end edge 202 b of the main body portion 202. The base end portion 210 extends radially from the main body portion 202 about the axis Ax.

  The distal end portion 212 is integrally connected to the distal end of the proximal end portion 210. The distal end portion 212 extends linearly along the extending direction of the virtual straight line VL2. For this reason, the side surface (surface that extends substantially parallel to the axis Ax) of each tip portion 212 does not have irregularities and is a flat surface.

  The distal end portions 212 of the external terminal portions 204A and 204B extend along the outer surfaces S1 and S2 of the protruding portion 104 toward the same side (rear side) as the protruding direction of the protruding portion 104. The distal end portions 212 of the external terminal portions 204C and 204D extend toward the side (front side) opposite to the protruding direction of the protruding portion 104. The length of the distal end portion 212 of the external terminal portions 204A and 204B is longer than the length of the distal end portion 212 of the external terminal portions 204C and 204D.

  Specifically, as shown in FIG. 4, in the state where the ground contact conductor 200 is attached to the insulating housing 100, the end portions 212 of the external terminal portions 204 </ b> A and 204 </ b> B It extends outside 202. In other words, in a state where the ground contact conductor 200 is attached to the insulating housing 100, the distal end of the distal end portion 212 of the external terminal portions 204A and 204B is orthogonal to the virtual straight line VL2 and passes through the rearmost portion of the main body portion 202. It is located on the side farther from the axis Ax than VS1.

  On the other hand, in a state where the ground contact conductor 200 is attached to the insulating housing 100, the distal end portions 212 of the external terminal portions 204C and 204D do not extend outward from the main body portion 202 in the extending direction of the virtual straight line VL2. In other words, in a state where the ground contact conductor 200 is attached to the insulating housing 100, the distal end of the distal end portion 212 of the external terminal portions 204C and 204D is orthogonal to the virtual straight line VL2 and passes through the foremost portion of the main body portion 202. It is located closer to the axis Ax than VS2.

  As shown in FIGS. 1 to 3 and FIGS. 10 to 12, the locking portions 206 </ b> A and 206 </ b> B are integrally connected to the lower end edge 202 b of the main body portion 202. The locking portions 206A and 206B protrude downward from the lower end edge 202b of the main body portion 202 and extend along the axis Ax direction. As shown in FIG. 12, the positions of the tips T of the locking portions 206A and 206B in the axis Ax direction (the height position of the tips T of the locking portions 206A and 206B) are the main surfaces S4 of the external terminal portions 204A to 204D. Or the main surface S3 side of the main surface S4.

  Each of the locking portions 206A and 206B includes a locking piece 214 as shown in FIGS. 1 to 4, 7, and 10 to 12. The locking piece 214 is inclined so as to approach the axis Ax side from the lower side toward the upper side. The lower end of the locking piece 214 is integrally connected to the locking portions 206A and 206B. Therefore, the locking piece 214 can swing so as to approach and separate from the axis Ax with the lower end as a fulcrum.

  When the ground contact conductor 200 is attached to the insulating housing 100 and the ground contact conductor 200 is lowered toward the insulating housing 100 from above the insulating housing 100, the locking piece 214 of the locking portion 206A is locked to the locking protrusion 110A. And the locking piece 214 of the locking part 206B contacts the locking protrusion 110B. When the ground contact conductor 200 is further lowered in this state, the respective locking pieces 214 are pushed by the respective locking protrusions 110A and 110B and swing outward. When the ground contact conductor 200 is further lowered and each locking piece 214 gets over each locking projection 110A, 110B, each locking piece 214 swings inward to return to its original shape, and each notch 116A. 116B. Thus, the locking piece 214 of the locking portion 206A is locked to the locking projection 110A, and the locking piece 214 of the locking portion 206B is locked to the locking projection 110B. Therefore, the locking portion 206A is configured to be locked with the locked portion (the locking protrusion 110A and the notch 116A) of the insulating housing 100. The locking portion 206B is configured to be locked with the locked portion (the locking protrusion 110B and the notch 116B) of the insulating housing 100.

  In the present embodiment, the locking portions 206A and 206B are disposed substantially symmetrically with respect to the virtual straight line VL2 when viewed from the axis Ax direction. In the present embodiment, the locking portions 206A and 206B are located on the virtual straight line VL1 and are opposed to each other with the axis Ax therebetween when viewed from the direction of the axis Ax. Therefore, as shown in FIG. 5, the locking portion 206A is connected to a virtual straight line (virtual straight line VL1) that connects the locking portion 206A and the axis Ax and extends in parallel with the wiring board CB1 when viewed from the axis Ax direction. The angle formed by the imaginary straight line VL2 is −90 ° starting from the position of the slit SL. When viewed from the direction of the axis Ax, the locking portion 206B connects the locking portion 206B and the axis Ax and the angle formed between the virtual straight line VL2 and the virtual straight line VL2 starts from the position of the slit SL. It is located at + 90 °.

[Signal contact conductor]
The signal contact conductor 300 is formed by stamping and bending a metal plate having conductivity and elasticity. The surface of the metal plate may be subjected to metal plating such as nickel, silver, and gold. The signal contact conductor 300 is attached to the insulating housing 100 as shown in FIGS. As shown in FIGS. 1 to 7 and FIGS. 13 to 16, the signal contact conductor 300 includes a terminal piece 302, a pair of connection pieces 304, and a bent piece 306.

  The terminal piece 302 is a plate member having a rectangular shape. When the plug connector 1 is mounted on the wiring board CB1, one end side (base end side) of the terminal piece 302 is connected to a terminal electrode TE2 (described later) of the wiring board CB1.

  The terminal piece 302 has a pair of main surfaces S7 and S8 that face each other. The terminal piece 302 is provided with a reinforcing portion 308 extending along the extending direction of the terminal piece 302 between one end side (base end side) and the other end side (tip end side). The starting point of the reinforcing portion 308 may be located in a region where the base end side of the terminal piece 302 and the terminal electrode TE2 of the wiring board CB1 overlap. The end point of the reinforcing portion 308 may be located in a region of the terminal piece 302 to which the connection piece 304 is connected.

  In the present embodiment, the reinforcing portion 308 is a concavo-convex portion composed of a protrusion 308A and a concave groove 308B. The protrusion 308A protrudes from the main surface S7 (first main surface). The concave groove 308B is recessed at a position corresponding to the protrusion 308A in the main surface S8 (second main surface).

  The pair of connection pieces 304 are cantilever plate members having an L shape. The pair of connection pieces 304 is erected on the terminal piece 302 on the distal end side of the terminal piece 302. Specifically, each of the pair of connection pieces 304 is integrally connected to each side edge of the terminal piece 302. The pair of connection pieces 304 protrude from the main surface S7 side so as to extend along the opposing direction of the main surfaces S7 and S8 while being bent from each side edge of the terminal piece 302. Therefore, the side from which the pair of connection pieces 304 protrudes is the same as the side from which the protrusion 308A protrudes. It can be said that the protruding direction of the pair of connection pieces 304 from the terminal piece 302 is the opposing direction of the main surfaces S7 and S8.

  As shown in FIGS. 1 to 7, the pair of connection pieces 304 is disposed in the accommodation hole 108 of the base portion 102 of the insulating housing 100. Therefore, both the base portion 102 and the main body portion 202 of the ground contact conductor 200 are located outside the pair of connection pieces 304.

  The pair of connection pieces 304 is configured to be able to be fitted to a signal contact conductor 2 a (described later) of the receptacle connector 2. When the pair of connection pieces 304 are fitted to the signal contact conductor 2a of the receptacle connector 2, the pair of connection pieces 304 are pushed outward by the signal contact conductor 2a and elastically fitted to the signal contact conductor 2a. .

  As shown in FIGS. 6 and 13 to 16, the bent piece 306 is a cantilever plate member having an L shape. The bent piece 306 is erected on the terminal piece 302 on the distal end side of the terminal piece 302. Specifically, the bent piece 306 is integrally connected to the distal end edge of the terminal piece 302. The bent piece 306 protrudes toward the main surface S7 so as to extend along the opposing direction of the main surfaces S7 and S8 while being bent from the leading edge of the terminal piece 302. Therefore, the side from which the bent piece 306 protrudes is the same as the side from which the protrusion 308A and the pair of connection pieces 304 protrude.

  When the signal contact conductor 300 is attached to the insulating housing 100, the terminal piece 302 is press-fitted between the pair of protrusions 120 so that the terminal piece 302 is positioned in the receiving groove 118 of the insulating housing 100. Thereby, the terminal piece 302 is fixed in the accommodation groove 118 by the pair of protrusions 120. Further, the bent piece 306 is press-fitted into the fitting groove 112 so that the bent piece 306 is positioned in the fitting groove 112 of the insulating housing 100. Thereby, the bending piece 306 is fixed in the fitting groove 112.

[How to use plug connector]
Then, the usage method of the plug connector 1 is demonstrated. First, as shown in FIG. 17, a plug connector 1 and a wiring board CB1 are prepared. The wiring board CB1 includes a ground conductive path (not shown) for electrical connection with a ground potential, a signal conductive path (not shown) for transmitting an electrical signal, and a ground conductive path. A terminal electrode TE1 electrically connected and a terminal electrode TE2 electrically connected to the signal conductive path are formed.

  Next, the external terminal portions 204A to 204D of the plug connector 1 are placed on the corresponding terminal electrodes TE1. Further, the base end portion of the terminal piece 302 of the signal contact conductor 300 of the plug connector 1 is placed on the terminal electrode TE2. Next, the external terminal portions 204A to 204D and the corresponding terminal electrode TE1 are joined by soldering, and the base end portion of the terminal piece 302 and the terminal electrode TE2 are joined by soldering. Thereby, the plug connector 1 is mounted on the wiring board CB1.

  Next, as shown in FIG. 18, the receptacle connector 2 mounted on the wiring board CB2 is prepared. The receptacle connector 2 includes a cylindrical signal contact conductor 2a and a cylindrical ground contact conductor 2b arranged so as to surround the signal contact conductor 2a. Similarly to the wiring board CB1, the wiring board CB2 includes a ground conductive path (not shown) for electrical connection with a ground potential and a signal conductive path (not shown) for transmitting an electrical signal. And a terminal electrode (not shown) electrically connected to the ground conductive path and a terminal electrode (not shown) electrically connected to the signal conductive path. The signal contact conductor 2a is electrically connected to the signal conductive path through the terminal electrode. The ground contact conductor 2b is electrically connected to the ground conductive path via the terminal electrode.

  Next, the plug connector 1 mounted on the wiring board CB1 and the receptacle connector 2 mounted on the wiring board CB2 are connected. Specifically, the plug connector 1 and the receptacle connector 2 are disposed so as to face each other, and both are brought close to each other. At this time, the signal contact conductor 2 a is inserted between the pair of connection pieces 304, and the ground contact conductor 2 b is inserted between the base portion 102 of the insulating housing 100 and the main body portion 202 of the ground contact conductor 200. Thus, the pair of connection pieces 304 are elastically fitted to the signal contact conductor 2a, and the main body 202 (upper edge 202a) is elastically fitted to the ground contact conductor 200. As described above, the signal contact conductor 300 of the plug connector 1 and the signal contact conductor 2a of the receptacle connector 2 are electrically and physically connected to form a signal transmission circuit.

[Action]
When the plug connector 1 and the receptacle connector 2 are fitted and the signal contact conductor 300 of the plug connector 1 is pushed by the signal contact conductor 2a of the receptacle connector 2, the vicinity of the base end of the terminal piece 302 and the terminal piece 302 A force is particularly likely to be applied in the vicinity of the connection piece 304. Therefore, these portions of the terminal piece 302 are very easily bent. However, in the present embodiment, the terminal piece 302 is provided with a reinforcing portion 308 extending from the base end side of the terminal piece 302 to the connection piece 304. Therefore, the vicinity of the proximal end of the terminal piece 302 and the vicinity of the connection piece 304 are reinforced by the reinforcing portion 308, and the rigidity of the terminal piece 302 is enhanced. Therefore, since the bending of the terminal piece 302 (signal contact conductor 300) is suppressed by the reinforcing portion 308, a sufficient effective fitting length with the receptacle connector 2 can be obtained. As a result, more reliable contact and connection between the signal contact conductor 300 of the plug connector 1 and the signal contact conductor 2a of the receptacle connector 2 are possible.

  In the present embodiment, the reinforcing portion 308 includes a protrusion 308A that protrudes from the main surface S7. Therefore, although the configuration of the reinforcing portion 308 is simple, the bending of the terminal piece 302 (signal contact conductor 300) can be sufficiently suppressed by the reinforcing portion 308.

  In the present embodiment, the reinforcing portion 308 is a concavo-convex portion composed of a protrusion 308A and a concave groove 308B. Therefore, the reinforcing portion 308 (uneven portion) can be easily obtained simply by pressing the terminal piece 302 having a plate shape. Therefore, even though the configuration of the reinforcing portion 308 is simple and easy to manufacture, the bending of the terminal piece 302 (the signal contact conductor 300) can be sufficiently suppressed by the reinforcing portion 308.

  In the present embodiment, the signal contact conductor 300 includes a bent piece 306 that protrudes on the same side as the connection piece 304, and the fitting groove 112 that fits the bent piece 306 is provided in the insulating housing 100. Therefore, it is not necessary to increase the height of the insulating housing 100 and separately secure a region for forming the fitting groove 112 in the insulating housing. Accordingly, the height of the plug connector 1 can be reduced.

  In the present embodiment, the ground contact conductor 200 has locking portions 206A and 206B integrally provided near the wiring board CB1 in the axis Ax direction in the main body 202, and the tips T of the locking portions 206A and 206B. The position in the axis Ax direction (the height position of the tip T of the locking portions 206A and 206B) is the same as the main surface S4 or is closer to the main surface S3 than the main surface S4. Therefore, the locking portions 206A and 206B are not adjacent to the base end portion 210 of the external terminal portions 204A to 204D in the axis Ax direction, but rather are adjacent to the external terminal portions 204A to 204D in the circumferential direction of the main body portion 202. Yes. Therefore, the height positions of the locking portions 206A and 206B approach the height positions of the external terminal portions 204A to 204D as compared with the prior art, so that the plug connector 1 can be further reduced in height.

  In the present embodiment, the engaging portions 206A and 206B are disposed substantially symmetrically with respect to the virtual straight line VL2 when viewed from the axis Ax direction. Therefore, the base portion 102 of the insulating housing 100 can be held in a balanced manner by the locking portions 206A and 206B.

  In the present embodiment, the locking portions 206A and 206B are located on the virtual straight line VL1 when viewed from the direction of the axis Ax, and face the axis Ax therebetween. Therefore, when the receptacle connector 2 is fitted to the plug connector 1, the portion of the main body 202 where the locking portions 206A and 206B are located is relatively difficult to expand. Therefore, it is possible to prevent the insulating housing 100 from dropping from the locking portions 206A and 206B while holding the base portion 102 of the insulating housing 100 in a balanced manner by the locking portions 206A and 206B.

  In the present embodiment, the insulating housing 100 includes a wall portion 106 that extends in the axis Ax direction and is disposed outside the base portion 102. The wall portion 106 covers the slit SL and the region R of the main body portion 202 near the slit SL from the outside. Therefore, when the plug connector 1 and the receptacle connector 2 are fitted together, the region R of the main body 202 that has been expanded outwardly comes into contact with the wall 106 even if the slit SL is greatly opened. Accordingly, since the region R is pressed by the wall portion 106, the expansion of the slit SL is suppressed. As a result, a sufficient urging force is applied from the main body 202 to the receptacle connector 2, so that the fitting between the main body 202 and the ground contact conductor 2 b of the receptacle connector 2 can be easily maintained.

  In the present embodiment, the external terminal portion 204B and the external terminal portion 204C are arranged so that the locking portion 206B is interposed therebetween. The external terminal portion 204D and the external terminal portion 204A are arranged so that the locking portion 206A is interposed therebetween. For this reason, the external terminal portions 204A to 204D and the locking portions 206A and 206B are unlikely to interfere with each other. Therefore, the external terminal portions 204A to 204D do not have to be shaped to avoid the locking portions 206A and 206B. The increase in size of 204A to 204D is suppressed. Therefore, the plug connector 1 can be reduced in size.

  In the present embodiment, the external terminal portions 204A and 204B are disposed so as to face each other with the protruding portion 104 therebetween, and have inner side surfaces S5 and S6 that face the outer side surfaces S1 and S2 of the protruding portion 104 in close proximity. . Therefore, the protruding portion 104 of the insulating housing 100 is sandwiched between the external terminal portions 204A and 204B. Accordingly, even if a load is applied to the main body 202 in the circumferential direction of the axis Ax, the inner surface S5 of the external terminal portion 204A comes into contact with the outer surface S1 of the protruding portion 104 (the protruding piece 104A) or the external terminal portion. The inner surface S6 of 204B is in contact with the outer surface S2 of the protrusion 104 (protrusion piece 104B). That is, the protruding portion 104 functions as a rotation restricting portion that restricts the rotation of the ground contact conductor 200. As a result, the rotation of the ground contact conductor 200 around the axis Ax relative to the insulating housing 100 can be suppressed. Thereby, more reliable positioning of the ground contact conductor 200 with respect to the insulating housing 100 is realized. Furthermore, when the plug connector 1 is mounted on the wiring board CB1, the external terminal portions 204A to 204D of the ground contact conductor 200 are unlikely to protrude from the terminal electrodes TE1 and TE2 on the wiring board CB1, so that the connection is improved. Yes.

  In the present embodiment, the external terminal portions 204C and 204D are disposed on the slit SL side with respect to the axis Ax. Therefore, when the plug connector 1 is mounted on the wiring board CB1, and the external terminal portions 204C and 204D located on the slit SL side are fixed to the terminal electrode TE1 of the wiring board, the plug connector 1 and the receptacle connector 2 When the are fitted, the slit SL is prevented from being greatly opened. Accordingly, a sufficient biasing force is applied from the main body 202 to the ground contact conductor 2b of the receptacle connector 2, so that the fitting between the main body 202 and the ground contact conductor 2b of the receptacle connector 2 can be easily maintained.

  In the present embodiment, the leading end portions 212 of the external terminal portions 204A and 204B extend along the outer surfaces S1 and S2 of the protruding portion 104 toward the same side (rear side) as the protruding direction of the protruding portion 104. In the present embodiment, the distal end portions 212 of the external terminal portions 204C and 204D extend toward the opposite side (front side) to the protruding direction of the protruding portion 104. In the present embodiment, the length of the distal end portion 212 of the external terminal portions 204A and 204B is longer than the length of the distal end portion 212 of the external terminal portions 204C and 204D. By the way, when the main body 202 rotates around the axis Ax, the distal end portions 212 of the external terminal portions 204A and 204B (the distal ends of the external terminal portions 204A and 204B) come into contact with the protruding portion 104. Here, the longer the external terminal portions 204A and 204B are, the smaller the rotation angle of the main body 202 is. Therefore, if the length of the tip portion 212 of the external terminal portions 204A and 204B is longer than the tip portion 212 of the external terminal portions 204C and 204D, the rotation of the ground contact conductor 200 around the axis Ax relative to the insulating housing 100 is further suppressed. It becomes possible. On the other hand, the length of the distal end portion 212 of the external terminal portions 204C and 204D is shorter than the length of the distal end portion 212 of the external terminal portions 204A and 204B. In this case, since the size of the external terminal portions 204C and 204D is relatively small, the plug connector 1 can be downsized.

[Other Embodiments]
As mentioned above, although embodiment concerning this indication was described in detail, you may add various deformation | transformation to said embodiment within the range of the summary of this invention. For example, in the above embodiment, the present invention is applied to the plug connector 1, but the present invention may be applied to the receptacle connector 2.

  As shown in FIG. 19, the bridge 208 may be disposed on the lower end edge 202b side of the main body 202 and between the pair of protruding pieces 104A and 104B (between the external terminal portions 204A and 204B).

  As shown in FIGS. 20 and 21, the terminal piece 302 may be provided with a pair of protrusions 310. The pair of protrusions 310 protrude in a direction orthogonal to both the protruding direction of the connection piece 304 from the terminal piece 302 and the extending direction of the reinforcing portion 308 (the extending direction of the terminal piece 302). That is, the pair of protrusions 310 protrude from the side edges of the terminal piece 302 toward the side. In addition, as shown in FIG. 22, the accommodation groove 118 of the insulating housing 100 may be provided with a pair of fitting grooves 122 (first fitting grooves) instead of the protrusions 120. Each of the pair of fitting grooves 122 is configured such that the corresponding protrusion 310 can be fitted. In this case, the signal contact conductor 300 is more securely held in the housing groove 118 (insulating housing 100) by press-fitting the pair of protrusions 310 into the corresponding fitting grooves 122 and fitting them together. Accordingly, even when the signal contact conductor 300 is pushed by the receptacle connector 2 when the plug connector 1 and the receptacle connector 2 are fitted, the deformation of the signal contact conductor 300 can be suppressed. Note that both the pair of protrusions 120 and the pair of fitting grooves 122 are provided in the housing groove 118, and each side edge of the terminal piece 302 and the pair of protrusions 120 are fitted, and the pair of protrusions 310 and the pair of protrusions are fitted. The fitting groove 122 may be fitted.

  The terminal piece 302 may be provided with at least one protrusion 310. The housing groove 118 may not be provided with the protrusion 120 or may be provided with at least one protrusion 120.

  In the above embodiment, the locked portion of the insulating housing 100 is configured by the combination of the locking protrusions 110A and 110B and the notches 116A and 116B. However, the locked portion of the insulating housing 100 is notched 116A and 116B. It may be constituted by. That is, the flange 114 may not be provided near the lower end of the base portion 102, and only the notches 116 </ b> A and 116 </ b> B may be provided near the lower end of the base portion 102. Instead of the notches 116A and 116B, holes that can be engaged with the protruding pieces 104A and 104B may be used. The hole is opened laterally from the outer peripheral surface of the base portion 102, but is not opened downward from the bottom surface of the base portion 102.

  The locked portion of the insulating housing 100 may be configured by locking protrusions 110A and 110B. That is, as long as the locking protrusions 110A and 110B protrude laterally from the outer peripheral surface of the base portion 102, the notches 116A and 116B do not have to be provided near the lower end of the base portion 102. The locking protrusions 110A and 110B may be integrated instead of separate. When the locking protrusions 110 </ b> A and 110 </ b> B are integrated, an annular member protruding sideways from the outer peripheral surface of the base portion 102 can be considered.

  When viewed from the axis Ax direction, the locking portion 206A has an angle formed between a virtual straight line (virtual straight line VL1) and a virtual straight line VL2 that connects the locking portion 206A and the axis Ax and extends parallel to the wiring board CB1. For example, it may be located at −45 ° from the position of. At this time, when the locking portion 206B is viewed from the direction of the axis Ax, the angle formed between the virtual straight line VL2 and the virtual straight line VL2 that connects the locking portion 206B and the axis Ax and extends parallel to the wiring board CB1 is the position of the slit SL. For example, it may be located at + 45 ° from the starting point. That is, the locking portions 206A and 206B do not have to be positioned on the virtual straight line VL1 as long as they are arranged substantially symmetrically with respect to the virtual straight line VL2 when viewed from the axis Ax direction.

  The locking portions 206A and 206B do not have to be arranged substantially line-symmetrically with respect to the virtual straight line VL2 when viewed from the axis Ax direction.

  The ground contact conductor 200 may have at least one locking portion.

  The insulating housing 100 may be provided with a member having the same function as the locking piece 214 of the ground contact conductor 200, instead of the locked portion. At this time, the ground contact conductor 200 may be provided with a member having the same function as the locked portion of the insulating housing 100 instead of the locking portion.

  In a state where the ground contact conductor 200 is attached to the insulating housing 100, the distal end portions 212 of the external terminal portions 204A and 204B may not extend outward from the main body portion 202 in the extending direction of the virtual straight line VL2. That is, in a state where the ground contact conductor 200 is attached to the insulating housing 100, the tips of the tip portions 212 of the external terminal portions 204A and 204B may be located closer to the axis Ax than the virtual plane VS1.

  In a state where the ground contact conductor 200 is attached to the insulating housing 100, the distal end portions 212 of the external terminal portions 204C and 204D may extend outward from the main body portion 202 in the extending direction of the virtual straight line VL2. That is, in the state where the ground contact conductor 200 is attached to the insulating housing 100, the tips of the tip portions 212 of the external terminal portions 204C and 204D may be located on the side farther from the axis Ax than the virtual plane VS2.

  The position of the slit SL provided in the main body 202 of the ground contact conductor 200 is not particularly limited, and may be a desired position. For example, the slit SL may be positioned on the external terminal portions 204A and 204B side.

  The slit SL may not be provided in the main body 202 of the ground contact conductor 200.

  The protrusion 308A constituting the reinforcing portion 308 of the signal contact conductor 300 may protrude from at least one of the main surfaces S7 and S8. The protrusion 308A may protrude from both surfaces of the main surfaces S7 and S8. Therefore, the reinforcement part 308 does not need to include the concave groove 308B. One or more ridges 308A may be provided.

  The reinforcing portion 308 may extend linearly, may extend in a curved shape, or may extend while meandering.

  DESCRIPTION OF SYMBOLS 1 ... Plug connector, 2 ... Receptacle connector, 2a ... Signal contact conductor, 2b ... Ground contact conductor, 100 ... Insulating housing, 102 ... Base part, 104 ... Projection part, 104A ... Projection piece (1st projection piece), 104B ... projecting piece (second projecting piece), 106 ... wall portion, 108 ... receiving hole, 110A, 110B ... locking projection (locked portion), 112 ... fitting groove (second fitting groove), 116A 116B ... Notch (locked part), 118 ... Housing groove, 120 ... Projection, 122 ... Fitting groove (first fitting groove), 200 ... Ground contact conductor, 202 ... Body part, 202a ... Upper edge , 202b ... lower end edge, 204A ... external terminal part (first external terminal part), 204B ... external terminal part (second external terminal part), 204C ... external terminal part (third external terminal part), 204D ... External terminal (Fourth external terminal portion), 206A, 206B ... locking portion, 210 ... base end portion, 212 ... tip end portion, 214 ... locking piece, 300 ... signal contact conductor, 302 ... terminal piece, 304 ... connection piece, 306 ... bending piece, 308 ... reinforcing part (uneven portion), 308A ... projection, 308B ... concave groove, 310 ... protrusion, Ax ... axis, CB1, CB2 ... wiring board, R ... region, S1, S2 ... outer side, S3 ... main surface (first main surface), S4 ... main surface (second main surface), S5, S6 ... inner surface, S7 ... main surface (first main surface), S8 ... main surface (second Main surface), SL ... slit, T ... tip, TE1, TE2 ... terminal electrode, VL1 ... virtual straight line (second virtual straight line), VL2 ... virtual straight line (first virtual straight line), VS1, VS2 ... virtual plane.

Claims (6)

A signal contact conductor, a ground contact conductor, and an insulating housing that insulates between the signal contact conductor and the ground contact conductor, and is configured to be matable with a mating connector and mounted on a wiring board. A coaxial connector,
The insulating housing has a base portion provided with a receiving hole for receiving the signal contact conductor therein, and a locked portion;
The ground contact conductor is:
A cylindrical main body extending along a predetermined axis;
At least one external terminal portion provided integrally with an edge of the main body portion near the wiring board in the axial direction, bent with respect to the main body section, and having a distal end connected to the wiring board;
The main body part is provided integrally with an edge near the wiring board in the axial direction, and has at least one locking part configured to be locked with the locked part,
The external terminal portion includes a pair of first and second main surfaces,
The first main surface faces the wiring board side,
The second main surface faces away from the wiring board;
The coaxial connector has a position in the axial direction of a tip of the locking portion that is the same as the second main surface or is closer to the first main surface than the second main surface. The ground contact conductor has a pair of the locking portions provided integrally with one end edge in the axial direction of the main body portion,
The main body portion is provided with a slit extending along the axial direction,
The pair of locking portions are arranged at positions that are substantially line symmetric with respect to a first imaginary straight line that connects the shaft and the slit and extends parallel to the wiring board when viewed from the axial direction. The coaxial connector according to claim 1.   The pair of locking portions are located on a second imaginary straight line that is orthogonal to both the axis and the first imaginary straight line when viewed from the axial direction, and are opposed to each other with the axis in between. The coaxial connector according to claim 2. The insulating housing further includes a wall portion extending in the axial direction and disposed outside the base portion,
The main body is attached to the base so as to surround a part of the outer peripheral surface of the base.
The wall is
Covering the slit and the region of the main body near the slit from the outside,
The coaxial connector according to claim 3, wherein the coaxial connector is configured to be able to come into contact with the region of the main body that is expanded outward by fitting with the mating connector. The ground contact conductor is provided integrally with one end edge in the axial direction of the main body portion, and has first to fourth external terminal portions arranged so as to be sequentially arranged around the axis,
One of the pair of locking portions is located between the first and fourth external terminal portions,
The coaxial connector according to claim 2, wherein the other of the pair of locking portions is located between the second and third external terminal portions. The locking part has a locking piece protruding from the main body part toward the shaft,
The coaxial connector according to claim 1, wherein the locked portion has a concave groove through which the locking piece is inserted.

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