Shield connector

Abstract

To prevent damage to a housing caused by a shield terminal.SOLUTION: A first shield connector includes a shield terminal 20 having a first inner conductor 21, a first dielectric body 22, and a first outer conductor 23, and a housing 11 into which the shield terminal 20 is inserted from behind. The first outer conductor 23 is composed of a metal plate material 25, and is constituted by disposing, in a line in the front-rear direction, a front-side cylindrical member 24 and a rear-side cylindrical member 50 that have axial lines oriented in the front-rear direction. The front-side cylindrical member 24 has an integrally formed mis-insertion prevention part 35 which has a shape bent so as to extend in a cantilever manner and protrude radially outward, and of which the front surface is constituted only from a surface other than shear surfaces 25S, 25R. A support part 55 that supports an extended end part 35E of the mis-insertion prevention part 35 is formed in the rear-side cylindrical member 50.SELECTED DRAWING: Figure 7

Description

[Technical field]

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

[0002] Patent Document 1 discloses a connector including a terminal metal fitting connected to an end of a shielded electric wire and a housing made of synthetic resin into which the terminal metal fitting is inserted. The terminal metal fitting includes an inner conductor, a dielectric in which the inner conductor is housed, and an outer conductor surrounding the dielectric. Since the terminal metal fitting is cylindrical, a first stabilizer and a second stabilizer protruding radially outward are formed on the outer peripheral surface of the outer conductor. When the terminal metal fitting is inserted into the housing in a proper position, the first stabilizer and the second stabilizer are inserted into the first guide groove and the second guide groove of the housing. The inserted terminal metal fitting is held in a non-removable state by the second stabilizer engaging with the lance. When the terminal metal fitting is inserted into the housing in an incorrect position, the front end faces of the first stabilizer and the second stabilizer abut against the rear surface of the housing, thereby preventing the terminal metal fitting from being inserted in an incorrect position. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-114489 A Summary of the Invention [Problem to be solved by the invention]

[0004] The outer conductor is formed by bending a metal plate that has been punched into a predetermined shape. The first and second stabilizers are formed by bending a part of the metal plate along a fold in the axial direction. The sheared surface of the metal plate that was punched out is exposed on the front end surface of the first stabilizer. Therefore, when the front end surface of the first stabilizer hits the rear surface of the housing, there is a risk that the edge of the sheared surface of the first stabilizer will bite into the rear surface of the housing.

[0005] The shielded connector of the present disclosure was developed based on the above circumstances, and has an object to prevent damage to the housing by the shield terminal. [Means for solving the problem]

[0006] The shielded connector of the present disclosure comprises: a shield terminal having an inner conductor, a dielectric and an outer conductor; a housing into which the shield terminal is inserted from the rear, The outer conductor is made of a metal plate and is configured by connecting two cylindrical members in the front-rear direction, the two cylindrical members having axes aligned in the front-rear direction. One of the two cylindrical members is integrally formed with an erroneous insertion prevention part, the erroneous insertion prevention part having a cantilevered shape and a bent shape so as to protrude radially outward, and a front surface of the erroneous insertion prevention part being composed only of surfaces other than the shear surface, The other of the two tubular members is formed with a support portion that supports the extending end portion of the erroneous insertion prevention portion. Effect of the Invention

[0007] According to the shielded connector of the present disclosure, it is possible to prevent the housing from being damaged by the shield terminal. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a shielded connector according to a first embodiment, seen obliquely from above and from the front, showing a state in which a shielded terminal is inserted into a housing. FIG. [Diagram 2] FIG. 2 is a perspective view of the shield terminal as viewed obliquely from below and from the front. [Diagram 3] FIG. 3 is a front view of the shield terminal. [Figure 4] FIG. 4 is a plan view of the shield terminal. [Diagram 5] FIG. 5 is a bottom view of the shield terminal. [Figure 6] FIG. 6 is a side cross-sectional view showing a state in which the shield terminal is inserted into the housing. [Figure 7] FIG. 7 is a partially enlarged cross-sectional view showing a state in which the erroneous insertion prevention portion abuts against the rear surface of the housing. [Figure 8] FIG. 8 is a schematic rear view showing a state in which the shield terminal is inserted into the housing in a proper posture. [Figure 9] FIG. 9 is a schematic rear view showing a state in which the shield terminal is inserted into the housing in an incorrect position. [Figure 10] FIG. 10 is a side cross-sectional view showing a state in which the shield terminal and the mating terminal are connected. [Figure 11] FIG. 11 is a front sectional view showing a state in which the shield terminal and the mating terminal are connected. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. Any combination of the following embodiments without causing any contradiction is also included in the embodiment for carrying out the present invention. The shielded connector of the present disclosure comprises: (1) A shield terminal having an inner conductor, a dielectric, and an outer conductor, and a housing into which the shield terminal is inserted from the rear, the outer conductor being made of a metal plate material and configured by connecting two cylindrical members in the front-rear direction with their axes oriented in the front-rear direction, one of the two cylindrical members being integrally formed with an erroneous insertion prevention part that extends in a cantilevered manner and has a bent shape so as to protrude radially outward, and the front surface of the erroneous insertion prevention part is formed only with surfaces other than the sheared surface, and the other of the two cylindrical members is formed with a support part that supports the extended end of the erroneous insertion prevention part. According to this configuration, when the insertion posture of the shield terminal with respect to the housing is incorrect, the front surface of the erroneous insertion prevention part abuts against the rear surface of the housing. Here, since the front surface of the erroneous insertion prevention part is formed only with surfaces other than the sheared surface, the sheared surface of the erroneous insertion prevention part does not come into contact with the rear surface of the housing. Therefore, it is possible to prevent the rear surface of the housing from being damaged by the sheared surface of the erroneous insertion prevention part.

[0010] (2) In (1), it is preferable that the rear end of the one tubular member is fitted onto the front end of the other tubular member, the mis-insertion prevention part extends backward in a cantilevered manner and has a V-shaped bent shape, and the extended end of the mis-insertion prevention part is supported by the outer circumferential surface of the other tubular member. According to this configuration, when the mis-insertion prevention part abuts against the rear surface of the housing and a rearward reaction force acts on the mis-insertion prevention part from the housing side, the mis-insertion prevention part tries to displace radially inward with its front end as a fulcrum, so that the extended end of the mis-insertion prevention part abuts against the outer circumferential surface of the other tubular member so as to bite into it. Therefore, deformation of the mis-insertion prevention part due to the reaction force from the housing side can be prevented.

[0011] (3) In (1) or (2), it is preferable that the two tubular members are fixed at spot welds with their ends coaxially fitted together, a pair of slits extending in the front-rear direction is formed in the end of one of the tubular members, and the erroneous insertion prevention part is a part of the one of the tubular members partitioned by the pair of slits. With this configuration, even if the length of the slits is increased to increase the radial protrusion dimension of the erroneous insertion prevention part, a wide setting area for the spot welds can be secured.

[0012] (4) In (1) or (2), it is preferable that an end of the one tubular member is fitted onto an end of the other tubular member, a pair of slits extending in the front-rear direction is formed in the end of the one tubular member, the erroneous insertion prevention part is made of a part of the one tubular member partitioned by the pair of slits, and the end of the other tubular member blocks at least a part of an opening formed between the pair of slits. According to this configuration, in the region of the outer conductor where the erroneous insertion prevention part is formed, no opening region that communicates the inside and outside of the outer conductor is formed, or the area of ​​the opening region can be reduced. Therefore, it is possible to suppress a deterioration in the shielding function caused by the formation of the erroneous insertion prevention part.

[0013] (5) In (1) or (2), it is preferable that a clearance-reducing protrusion protruding radially outward is formed on the outer peripheral surface of the outer conductor in a region opposite the erroneous insertion prevention portion with respect to the axis of the outer conductor. With this configuration, the clearance-reducing protrusion abuts against the inner peripheral surface of the housing, displacing the position of the shield terminal within the housing in the same direction as the protruding direction of the erroneous insertion prevention portion. Therefore, even if the radial protrusion of the erroneous insertion prevention portion is small, an incorrect insertion posture of the shield terminal can be detected.

[0014] (6) In (1) or (2), it is preferable that a locking portion is formed on the outer peripheral surface of the shielded terminal at a position rearward of the mis-insertion prevention portion, a lance is formed in the housing for preventing the shielded terminal from being pulled out when inserted by locking with the locking portion, and the mis-insertion prevention portion is disposed in a region different from the lance in the circumferential direction. According to this configuration, since the formation position of the lance and the formation position of the mis-insertion prevention portion are different in the circumferential direction, the mis-insertion prevention portion does not come into contact with the lance during the process of inserting the shielded terminal into the housing. Since it is not necessary to perform a chamfering process on the mis-insertion prevention portion to prevent the lance from being damaged, the manufacturing man-hours for the shielded terminal can be reduced.

[0015] [Details of the embodiment of the present disclosure] [Example 1] A connector device according to a first embodiment of the present disclosure will be described with reference to Figs. 1 to 11. The present invention is not limited to these examples, but is defined by the claims, and includes all modifications within the meaning and scope equivalent to the claims. In this first embodiment, the F direction in Figs. 1, 2, 4 to 7, and 10 is defined as the front with respect to the front-rear direction. The front-rear direction and the axial direction are used synonymously. The H direction in Figs. 1 to 3, 6, and 8 to 11 is defined as the upward direction with respect to the up-down direction. The R direction in Figs. 1 to 5, 8, 9, and 11 is defined as the rightward direction with respect to the left-right direction.

[0016] The connector device includes a first shielded connector 10 and a second shielded connector 70 that can be mated and separated in the front-rear direction. As shown in Fig. 1, the first shielded connector 10 has an elongated shape in the front-rear direction as a whole. The first shielded connector 10 includes a housing 11 and a first shielded terminal 20.

[0017] The housing 11 is a synthetic resin part having an elongated shape in the front-rear direction as a whole. As shown in Figs. 5, 6, 8, and 9, a terminal accommodating chamber 12 for accommodating the first shield terminal 20 is formed in the housing 11. As shown in Figs. 8 and 9, the terminal accommodating chamber 12 is circular in rear view of the housing 11 from the rear. As shown in Figs. 6, 8, and 9, a lance 13 is formed at the lower end of the terminal accommodating chamber 12. The lance 13 is cantilevered forward and can be elastically deformed in the radial direction. The lance 13 is formed with a retaining projection 14 that protrudes radially inward. The rear end of the terminal accommodating chamber 12 opens as a terminal insertion port 15 at the rear surface of the housing 11.

[0018] 8 and 9, an escape groove 16 and a rotation restriction groove 17 are formed on the inner peripheral surface of the terminal accommodating chamber 12. The escape groove 16 and the rotation restriction groove 17 each have a shape that extends linearly in the front-rear direction and are open to the rear end surface of the housing 11. In rear view, the escape groove 16 is located at a position lower and left of the upper end of the terminal accommodating chamber 12 and above the mid-height of the terminal accommodating chamber 12. The rotation restriction groove 17 is located at a position lower and right of the upper end of the terminal accommodating chamber 12 and above the mid-height of the terminal accommodating chamber 12.

[0019] 6 and 10, the first shield terminal 20 is configured by assembling a first inner conductor 21, a first dielectric 22, and a first outer conductor 23. The first inner conductor 21 is a female terminal having a cylindrical shape. A core wire 61 of a coaxial cable 60 is connected to a rear end portion of the first inner conductor 21. The first inner conductor 21 is housed inside the first dielectric 22.

[0020] The first outer conductor 23 is a cylindrical member surrounding the entire first dielectric 22. As shown in Figs. 1, 2, 4 to 6, the first outer conductor 23 is configured by combining a front cylindrical member 24 having an axis oriented in the front-rear direction and a rear cylindrical member 50 having an axis oriented in the front-rear direction. The front cylindrical member 24 is made of a metal plate 25 sheared into a predetermined shape by press forming. As shown in Figs. 2 and 5, the front cylindrical member 24 is a single member formed into a cylindrical shape by bending the metal plate 25 and butting and fitting the circumferential edges 25E of the metal plate 25 having an uneven shape. The center of the circle of the front cylindrical member 24 (first outer conductor 23) in a front view is defined as the axis C (see Figs. 3, 8, and 9).

[0021] The front cylindrical member 24 has a small diameter portion 26, an expanded diameter portion 27, and a large diameter portion 28 having an outer diameter larger than that of the small diameter portion 26. The small diameter portion 26 is a cylindrical portion constituting the first outer conductor 23 and the front end portion of the front cylindrical member 24. A pair of fixed contact portions 29 and one spring group 30 are formed in the small diameter portion 26. The pair of fixed contact portions 29 are arranged at a circumferential interval at the lower end portion of the small diameter portion 26 (front cylindrical member 24). The fixed contact portion 29 is a contact that does not displace relative to the small diameter portion 26. The pair of fixed contact portions 29 are arranged only within the range of the minor arc of the front cylindrical member 24.

[0022] 3 and 11, the spring group 30 is composed of four spring portions 31 arranged at intervals in the circumferential direction. Each spring portion 31 is capable of elastically deforming in the radial direction. The spring portion 31 has a movable contact portion 32 that protrudes radially outward. The spring group 30 is arranged only within the range of the major arc of the small diameter portion 26. The pair of fixed contact portions 29 and the four movable contact portions 32 are arranged in different regions in the circumferential direction of the small diameter portion 26.

[0023] The expanded diameter portion 27 is disposed at the rear end of the small diameter portion 26 and is a portion that protrudes radially outward like a flange. The large diameter portion 28 is a cylindrical portion that extends coaxially rearward from the outer circumferential edge of the expanded diameter portion 27 and constitutes the rear end portion of the front cylindrical member 24. The large diameter portion 28 is formed with one erroneous insertion prevention portion 35, one rotation restriction portion 42, and a pair of backlash-reducing protrusions 44.

[0024] 1, 2 and 4, the erroneous insertion prevention portion 35 is disposed at the rear end portion 24R of the large diameter portion 28 (front cylindrical member 24). The rear end portion 24R is a common portion of the front cylindrical member 24 and the large diameter portion 28.

[0025] 3, 8 and 9, in the circumferential direction, the mis-insertion prevention portion 35 is disposed at a position lower and to the left of the upper end of the large diameter portion 28 and higher than the axis C of the large diameter portion 28 (first outer conductor 23). In other words, the mis-insertion prevention portion 35 is disposed diagonally above and to the left of the axis C of the first outer conductor 23. In a front view of the front cylindrical member 24 parallel to the axis, the mis-insertion prevention portion 35 is disposed within the range in which the spring group 30 is formed.

[0026] 1 and 4, a pair of slits 36 spaced apart in the circumferential direction are formed in the area of ​​the large diameter portion 28 where the erroneous insertion prevention portion 35 is formed. The pair of slits 36 extend linearly in the front-rear direction and are open at the rear end edge of the large diameter portion 28. The area of ​​the large diameter portion 28 between the pair of slits 36, i.e., the area partitioned by the pair of slits 36, functions as the erroneous insertion prevention portion 35.

[0027] As shown in Figs. 1, 4 and 7, the large diameter portion 28 is formed with a first bent portion 37 along a virtual line (not shown) connecting the front ends of the pair of slits 36. The erroneous insertion prevention portion 35 extends backward from the first bent portion 37 in a cantilever shape. The erroneous insertion prevention portion 35 has a second bent portion 38 located rearward of the first bent portion 37 and radially outward of the first bent portion 37. As shown in Figs. 4 and 7, the extension end portion 35E of the erroneous insertion prevention portion 35 is located rearward of the second bent portion 38 and radially inward of the second bent portion 38. The extension end portion 35E is accommodated inside a first opening 40 formed between the pair of slits 36. When the erroneous insertion prevention portion 35 is viewed in the circumferential direction, the erroneous insertion prevention portion 35 has a bent shape in a mountain shape (inverted V shape) and protrudes radially outward from the outer circumferential surface of the large diameter portion 28.

[0028] A portion of the outer surface of the mis-insertion prevention portion 35 between the first bent portion 37 and the second bent portion 38 functions as a contact surface 39. As shown in FIG. 7, the outer surface of the portion of the large diameter portion 28 adjacent to the contact surface 39 via the first bent portion 37 forms an obtuse angle with the contact surface 39. The contact surface 39 constitutes the front surface of the mis-insertion prevention portion 35. Surfaces along the outer peripheral edge of the mis-insertion prevention portion 35 and intersecting with the outer surface of the mis-insertion prevention portion 35 (both side surfaces and the rear end surface of the mis-insertion prevention portion 35) are sheared surfaces 25S, 25R (fracture surfaces) sheared by a cutter when the metal plate material 25 is press-processed (see FIGS. 2 to 4). The sheared surfaces 25S, 25R face in a direction other than the forward direction. The sheared surface 25S along the side edge of the mis-insertion prevention portion 35 faces in the circumferential direction. The sheared surface 25R along the rear end edge of the mis-insertion prevention portion 35 faces in an oblique direction with respect to the axis. The contact surface 39 is a smooth surface formed in a rolling process before the press working, and faces obliquely forward.

[0029] As shown in Figs. 1 and 4, the rotation restricting portion 42 is disposed at the rear end 24R of the large diameter portion 28 (front cylindrical member 24) in the same manner as the erroneous insertion prevention portion 35. As shown in Figs. 3, 8, and 9, in the circumferential direction, the rotation restricting portion 42 is disposed at a position lower right than the upper end of the large diameter portion 28 and higher than the axis C of the large diameter portion 28 (first outer conductor 23). In other words, the rotation restricting portion 42 is disposed diagonally above and to the upper right of the axis C of the first outer conductor 23. In a front view, the rotation restricting portion 42 is disposed within the formation range of the spring group 30. As shown in Fig. 4, the rotation restricting portion 42 is a portion in which a part of the large diameter portion 28 is bent along a fold 43 in the front-rear direction and protrudes radially outward from the outer circumferential surface of the large diameter portion 28. The rotation restricting portion 42 is flat and disposed so that the plate thickness direction faces the circumferential direction.

[0030] As shown in Fig. 5, the pair of backlash-eliminating projections 44 are disposed at the rear end 24R of the large diameter portion 28. As shown in Figs. 3, 8 and 9, when the front cylindrical member 24 is viewed in the axial direction, one of the backlash-eliminating projections 44 is disposed at a position opposite the erroneous insertion prevention portion 35 across the axis C of the front cylindrical member 24. The other backlash-eliminating projection 44 is disposed at a position opposite the rotation restricting portion 42 across the axis C of the front cylindrical member 24. The backlash-eliminating projections 44 are portions that protrude radially outward from the outer circumferential surface of the large diameter portion 28.

[0031] As shown in Figs. 1, 2 and 6, the rear cylindrical member 50 has a cylindrical main body 51 and a cylindrical connecting portion 52 having a smaller diameter than the cylindrical main body 51. The cylindrical main body 51 is a cylindrical portion constituting the rear end portion of the first outer conductor 23 and most of the rear cylindrical member 50. The cylindrical main body 51 is fixed to a shielding member 62 (braided wire) of the coaxial cable 60 so as to be conductive. The cylindrical connecting portion 52 is a cylindrical portion protruding forward from the front end of the cylindrical main body 51. A front end portion 50F of the rear cylindrical member 50 (cylindrical connecting portion 52) is coaxially fitted inside the rear end portion 24R of the front cylindrical member 24. The front end portion 50F is a portion common to the rear cylindrical member 50 and the cylindrical connecting portion 52.

[0032] The front end 50F of the rear cylindrical member 50 and the rear end 24R of the front cylindrical member 24 are fixed to each other in a conductive manner at four spot welds 53 spaced apart in the circumferential direction. As shown in Fig. 4, two of the four spot welds 53 are disposed between the erroneous insertion prevention portion 35 and the rotation restricting portion 42 in the circumferential direction. As shown in Fig. 5, the remaining two spot welds 53 are disposed between a pair of backlash-reducing protrusions 44 in the circumferential direction.

[0033] 4, the rear end 24R of the front cylindrical member 24 has a first opening 40 formed by forming the erroneous insertion prevention portion 35 and a second opening 54 formed by forming the rotation restriction portion 42. The front end 50F of the rear cylindrical member 50 is arranged so as to overlap the rear end 24R of the front cylindrical member 24 coaxially from the inner circumferential side. The front end 50F of the rear cylindrical member 50 is positioned so as to block the first opening 40 and the second opening 54 from the inside.

[0034] 7, an area of ​​the outer circumferential surface of the front end 50F of the rear cylindrical member 50 (cylindrical connecting portion 52) that closes the first opening 40 functions as a support portion 55. The support portion 55 is positioned to face the extending end portion 35E of the erroneous insertion prevention portion 35 located in the first opening 40 from the radially inner side. The sheared surface 25R at the rear end of the extending end portion 35E faces the support portion 55 from an obliquely forward direction. As a result, an edge portion 56, which is a boundary between the sheared surface 25R at the rear end and the inner surface of the extending end portion 35E, is positioned to face the support portion 55 from the radially outer side.

[0035] As shown in Fig. 6, a circumferential groove 57 is formed between the rear end 24R of the large diameter portion 28 and the front end 50F of the cylindrical main body 51 of the rear cylindrical member 50 by the difference in diameter between the outer diameter of the large diameter portion 28 and the outer diameter of the cylindrical connecting portion 52. The groove 57 is formed by recessing the outer circumferential surface of the first outer conductor 23 over the entire circumference. The lower end of the rear end 24R of the front cylindrical member 24 facing the groove 57 functions as a locking portion 58 that can be locked to the lance 13. The locking portion 58 is formed on the outer circumferential surface of the first outer conductor 23 and is located only in the region between the pair of fixed contact portions 29 in the circumferential direction.

[0036] When attaching the first shield terminal 20 to the housing 11, the first shield terminal 20 is inserted into the terminal accommodating chamber 12 from the rear of the housing 11. At this time, as shown in FIG. 8, if the circumferential orientation of the first shield terminal 20 with respect to the housing 11 is correct, the erroneous insertion prevention portion 35 enters the relief groove 16 and the rotation restriction portion 42 enters the rotation restriction groove 17 when the insertion of the first shield terminal 20 progresses to a certain extent. When the orientation of the first shield terminal 20 is correct, the erroneous insertion prevention portion 35 is located in a region different from the lance 13 in the circumferential direction. During the process of inserting the first shield terminal 20 into the terminal accommodating chamber 12, the lower end portion of the first outer conductor 23 where the fixed contact portion 29 is formed slides against the retaining projection 14 of the lance 13, elastically deforming the lance 13 radially outward.

[0037] 6, when the first shield terminal 20 reaches the correct insertion position, the lance 13 elastically returns to its original position, allowing the retaining projection 14 to engage with the locking portion 58 from behind. Even if the first shield terminal 20 is pulled rearward, the locking portion 58 engages with the retaining projection 14, thereby holding the first shield terminal 20 in a retained state relative to the housing 11. This completes the attachment of the first shield terminal 20 to the housing 11.

[0038] If an attempt is made to insert the first shield terminal 20 into the housing 11 in an improper position, the erroneous insertion prevention portion 35 interferes with the housing 11 during insertion, as shown in Fig. 7. In detail, the abutment surface 39 of the erroneous insertion prevention portion 35 abuts against the opening edge of the terminal insertion opening 15 of the terminal accommodating chamber 12. The abutment surface 39 abutting against the opening edge of the terminal insertion opening 15 is a smooth surface, unlike the sheared surfaces 25S, 25R. Therefore, there is no risk that the opening edge of the terminal insertion opening 15 made of synthetic resin will be damaged by the metal erroneous insertion prevention portion 35.

[0039] The second shielded connector 70 has a second shielded terminal 71 that is elongated in the front-rear direction as a whole. As shown in Fig. 10, the second shielded terminal 71 is configured by assembling a second inner conductor 72, a second dielectric 73, and a second outer conductor 74. The second inner conductor 72 is a male terminal having a tab 75. A core wire (not shown) of a coaxial cable (not shown) is connected to the second inner conductor 72. The second inner conductor 72 is housed inside the second dielectric 73.

[0040] The second outer conductor 74 is a cylindrical member that surrounds the entire second dielectric 73. The tip of the second outer conductor 74 functions as a cylindrical fitting portion 76. The inner diameter of the fitting portion 76 is set to a dimension smaller than the inner diameter of an imaginary circle (not shown) that circumscribes at least three of the two fixed contact portions 29 and the four movable contact portions 32 when the spring portion 31 is in a free state in which it is not elastically deformed.

[0041] When the first shield terminal 20 of the first shield connector 10 and the second shield terminal 71 of the second shield connector 70 are mated, the first inner conductor 21 and the second inner conductor 72 are connected, and the mating portion 76 of the second outer conductor 74 is fitted onto the first outer conductor 23 as shown in Fig. 10. When the first outer conductor 23 and the second outer conductor 74 are mated, the four spring portions 31 are elastically deformed radially inward, and the six contact portions (the pair of fixed contact portions 29 and the four movable contact portions 32) come into contact with the inner circumferential surface of the mating portion 76 as shown in Fig. 11. At this time, the elastic restoring forces of the four spring portions 31 act as radially inward reaction forces from the mating portion 76 to the four spring portions 31. These reaction forces connect the six contact portions 29, 32 and the mating portion 76 with a predetermined contact pressure.

[0042] The first shielded connector 10 of the first embodiment includes a housing 11 and a first shielded terminal 20. The first shielded terminal 20 includes a first inner conductor 21, a first dielectric 22, and a first outer conductor 23. The first shielded terminal 20 is inserted into the housing 11 from the rear. The first outer conductor 23 is made of a metal plate 25, and is configured by connecting a front cylindrical member 24 and a rear cylindrical member 50, whose axes are oriented in the front-rear direction, in the front-rear direction. The front cylindrical member 24 (one of the cylindrical members) of the front cylindrical member 24 and the rear cylindrical member 50 is integrally formed with an erroneous insertion prevention portion 35 that extends in a cantilever shape and is bent so as to protrude radially outward. The front surface (abutment surface 39) of the erroneous insertion prevention portion 35 is configured only by surfaces other than the sheared surfaces 25S and 25R. Of the front tubular member 24 and the rear tubular member 50, the rear tubular member 50 (the other tubular member) is formed with a support portion 55 that supports the extending end portion 35E of the erroneous insertion prevention portion 35.

[0043] According to this configuration, when the insertion posture of the first shield terminal 20 relative to the housing 11 is incorrect in the circumferential direction, the front surface (contact surface 39) of the incorrect insertion prevention portion 35 abuts against the rear surface of the housing 11. Here, since the contact surface 39 is composed only of surfaces other than the shear surfaces 25S, 25R, the shear surfaces 25S, 25R of the incorrect insertion prevention portion 35 do not come into contact with the rear surface of the housing 11. Therefore, the rear surface of the housing 11 can be prevented from being damaged by the shear surfaces 25S, 25R of the incorrect insertion prevention portion 35.

[0044] The rear end 24R of the front cylindrical member 24 is fitted onto the front end 50F of the rear cylindrical member 50. The erroneous insertion prevention part 35 extends backward in a cantilever shape and is bent into a V shape. The extending end 35E of the erroneous insertion prevention part 35 is supported by the outer circumferential surface (supporting part 55) of the rear cylindrical member 50. When the erroneous insertion prevention part 35 hits the rear surface of the housing 11, a rearward reaction force acts on the erroneous insertion prevention part 35 from the housing 11 side. Due to this reaction force, the erroneous insertion prevention part 35 tries to displace radially inward with its front end (first bent part 37) as a fulcrum. With this displacement, the edge part 56 of the extending end 35E of the erroneous insertion prevention part 35 abuts against the outer circumferential surface (supporting part 55) of the rear cylindrical member 50 so as to bite into it. This makes it possible to prevent the erroneous insertion prevention part 35 from being significantly deformed radially inward due to the reaction force from the housing 11 side.

[0045] The front tubular member 24 and the rear tubular member 50 are fixed to each other at spot welds 53 in a state in which the rear end 24R of the front tubular member 24 and the front end 50F of the rear tubular member 50 are coaxially fitted together. A pair of slits 36 extending in the front-rear direction are formed in the front end 50F of the front tubular member 24. The erroneous insertion prevention portion 35 is made up of a portion of the front tubular member 24 that is partitioned by the pair of slits 36. With this configuration, even if the length of the slits 36 is increased to increase the radial protruding dimension of the erroneous insertion prevention portion 35, a wide setting area for the spot welds 53 can be secured.

[0046] The rear end 24R of the front cylindrical member 24 is fitted onto the front end 50F of the rear cylindrical member 50. The front end 50F of the rear cylindrical member 50 closes at least a part of the first opening 40 formed between the pair of slits 36. With this configuration, in the region of the first outer conductor 23 where the erroneous insertion prevention portion 35 is formed, the area of ​​the opening region connecting the inside and outside of the first outer conductor 23 is reduced or no opening region is formed. Therefore, it is possible to suppress a decrease in the shielding function caused by the formation of the erroneous insertion prevention portion 35.

[0047] A gap-eliminating protrusion 44 protruding radially outward is formed on the outer peripheral surface of the first outer conductor 23 in a region opposite the erroneous insertion prevention portion 35 with respect to the axis (axis center C) of the first outer conductor 23. With this configuration, the gap-eliminating protrusion 44 comes into contact with the inner peripheral surface of the housing 11 (terminal accommodating chamber 12), displacing the position of the first shield terminal 20 in the housing 11 in the same direction as the protruding direction of the erroneous insertion prevention portion 35. Therefore, even if the radial protruding dimension of the erroneous insertion prevention portion 35 is small or the dimensional difference between the outer diameter of the first shield terminal 20 and the inner diameter of the terminal accommodating chamber 12 is large, an incorrect insertion posture of the first shield terminal 20 can be detected.

[0048] A locking portion 58 is formed on the outer peripheral surface of the first shield terminal 20 at a position rearward of the erroneous insertion prevention portion 35. A lance 13 is formed in the housing 11 to lock the first shield terminal 20 in the inserted state against removal by locking with the locking portion 58. When the first shield terminal 20 is inserted into the housing 11 in the correct orientation, the erroneous insertion prevention portion 35 is disposed in a region different from the lance 13 in the circumferential direction. According to this configuration, the lance 13 and the erroneous insertion prevention portion 35 are formed at different positions in the circumferential direction, so that the erroneous insertion prevention portion 35 does not come into contact with the lance 13 during the process of inserting the first shield terminal 20 into the housing 11. Since it is not necessary to perform a chamfering process on the erroneous insertion prevention portion 35 to prevent the lance 13 from being damaged, the number of manufacturing steps for the first shield terminal 20 can be reduced.

[0049] The first shielded connector 10 of the first embodiment includes a first shielded terminal 20 and a housing 11. The first shielded terminal 20 has a first inner conductor 21, a first dielectric 22, and a first outer conductor 23. The first shielded terminal 20 is inserted into the housing 11 from the rear. An erroneous insertion prevention part 35 is formed on the outer peripheral surface of the first shielded terminal 20, which contacts the rear surface of the housing 11 when the insertion posture of the first shielded terminal 20 relative to the housing 11 is incorrect. A locking part 58 is formed on the outer peripheral surface of the first shielded terminal 20 at a position rearward of the erroneous insertion prevention part 35. A lance 13 is formed in the housing 11 to lock the locking part 58 and prevent the first shielded terminal 20 from being removed in the inserted state. When the first shielded terminal 20 is inserted into the housing 11 in the correct orientation, the erroneous insertion prevention part 35 is disposed in a region different from the lance 13 in the circumferential direction. According to this configuration, the erroneous insertion prevention portion 35 does not come into contact with the lance 13 during the process of inserting the first shield terminal 20 into the housing 11. Since the erroneous insertion prevention portion 35 does not require a chamfering process for preventing the lance 13 from being damaged, the number of manufacturing steps for the first shield terminal 20 can be reduced.

[0050] The first outer conductor 23 is made of a metal plate 25. The first outer conductor 23 is cylindrical with circumferential edges 25E of the metal plate 25 butted against each other and with an axis oriented in the front-rear direction. In a region of the first outer conductor 23 forward of the erroneous insertion prevention portion 35, a spring group 30 is arranged, which is made of a plurality of spring portions 31 that are elastically deformable in the radial direction and can come into contact with the second outer conductor 74 (the mating outer conductor). The erroneous insertion prevention portion 35 is arranged only within a range of the first outer conductor 23 where the spring group 30 is formed in the circumferential direction. With this configuration, the lance 13 can be formed in a region different from the spring group 30 in the circumferential direction. This makes it possible to avoid interference between the lance 13 and the spring portion 31 during the process of inserting the first shield terminal 20 into the housing 11.

[0051] It is preferable that the first outer conductor 23 has a fixed contact portion 29 that can come into contact with the second outer conductor 74 (mating outer conductor) formed at a position closer to the circumferential edge 25E than the spring group 30 in the circumferential direction. When the spring portion 31 and the fixed contact portion 29 are brought into contact with the second outer conductor 74, stress is concentrated on the spring portion 31 that elastically deforms. Since the stress generated at the circumferential edge 25E of the metal plate material 25 where the fixed contact portion 29 is formed is kept small, misalignment between the circumferential edges 25E is unlikely to occur. This makes it possible to suppress deformation of the first outer conductor 23 caused by misalignment between the circumferential edges 25E.

[0052] The first outer conductor 23 is formed with a pair of slits 36 extending in the front-rear direction. The erroneous insertion prevention portion 35 is formed by bending a portion of the first outer conductor 23 defined by the pair of slits 36. A part of the region between the pair of slits 36 in the first outer conductor 23 becomes a notched region (first opening 40) by bending the erroneous insertion prevention portion 35. Here, since the slits 36 extend in the front-rear direction, not in the circumferential direction, the notched region (first opening 40) between the slits 36 does not expand in the circumferential direction even if the length of the slits 36 is increased to increase the radial protruding dimension of the erroneous insertion prevention portion 35. This makes it possible to prevent the opening edge of the notched region (first opening 40) between the slits 36 from interfering with the lance 13 during the process of inserting the first shield terminal 20 into the housing 11.

[0053] [Other Examples] The present invention is not limited to the embodiments described above and shown in the drawings, but is indicated by the claims. The present invention includes the equivalent meaning of the claims and all modifications within the scope of the claims, including the following embodiments. The incorrect insertion prevention portion may be in a shape other than the V shape. The erroneous insertion prevention portion may be in a shape that extends forward in a cantilever manner. The erroneous insertion prevention portion may be formed on the rear cylindrical member, and the extending end portion of the erroneous insertion prevention portion may be supported by the front cylindrical member. The erroneous insertion prevention portion may be formed by bending a portion protruding rearward from the rear end edge of the front tubular member (one of the tubular members). At least a portion of the erroneous insertion prevention portion may be located outside the area in the circumferential direction where the spring group is formed. The slit for forming the erroneous insertion prevention portion may extend in the circumferential direction. The outer conductor may have no backlash-reducing projection. The fixed contact portion may be disposed within a range of an area in which the spring group is formed in the circumferential direction. The rear tubular member (the other tubular member) may be configured not to close a part of or the whole of the opening formed between the slits. The front end portion of the rear tubular member (the other tubular member) may be fitted onto the rear end portion of the front tubular member (one of the tubular members).

[0054] [Second Disclosure] The connector described in JP 2019-114489 A has the following problem. That is, in the process of inserting the terminal fitting, the second stabilizer slides against the lance to elastically deform the lance. At this time, a chamfered surface is formed on the front end of the second stabilizer to prevent the lance from being damaged by the sheared surface of the second stabilizer. Therefore, a process for forming the chamfered surface is required when manufacturing the terminal fitting.

[0055] The following shielded connector has been developed based on the above circumstances, and aims to reduce the number of manufacturing steps for the shielded terminal.

[0056] As a means for solving the above problems, the shielded connector of the second disclosure comprises: a shield terminal having an inner conductor, a dielectric and an outer conductor; a housing into which the shield terminal is inserted from the rear, an erroneous insertion prevention portion is formed on an outer peripheral surface of the shield terminal, the erroneous insertion prevention portion being brought into contact with a rear surface of the housing when the shield terminal is inserted into the housing in an incorrect position; a locking portion is formed on an outer peripheral surface of the shield terminal at a position rearward of the erroneous insertion prevention portion, A lance is formed in the housing to lock the shield terminal in the locking portion, and the shield terminal is prevented from being pulled out when the shield terminal is inserted. The erroneous insertion prevention portion is disposed in a different region from the lance in the circumferential direction.

[0057] According to the shielded connector of the second disclosure, the effect of the invention is that it is possible to reduce the number of manufacturing steps for the shielded terminal.

[0058] Hereinafter, the embodiments of the second disclosure will be described as a mode for carrying out the invention. Any combination of the following multiple embodiments without causing any contradiction is also included in the mode for carrying out the invention.

[0059] The shielded connector of the second disclosure includes: (1) A shield terminal having an inner conductor, a dielectric, and an outer conductor, and a housing into which the shield terminal is inserted from the rear, the outer peripheral surface of the shield terminal is formed with an erroneous insertion prevention part that abuts against the rear surface of the housing when the shield terminal is inserted into the housing in an incorrect position, a locking part is formed on the outer peripheral surface of the shield terminal at a position rearward of the erroneous insertion prevention part, a lance is formed in the housing to lock the locking part and prevent the shield terminal from being pulled out in the inserted state, and the erroneous insertion prevention part is disposed in a region different from the lance in the circumferential direction. With this configuration, the erroneous insertion prevention part does not come into contact with the lance during the process of inserting the shield terminal into the housing. Since a chamfering process for preventing damage to the lance is not required for the erroneous insertion prevention part, the manufacturing man-hours for the shield terminal can be reduced.

[0060] (2) In (1), the outer conductor is preferably made of a metal plate, the circumferential edges of the metal plate are butted against each other, and the cylindrical shape has an axis in the front-rear direction, and a spring group consisting of a plurality of spring portions that are elastically deformable in the radial direction and can contact the mating outer conductor is disposed in a region of the outer conductor forward of the mis-insertion prevention portion, and the mis-insertion prevention portion is preferably disposed only within the formation range of the spring group in the circumferential direction of the outer conductor. With this configuration, the formation position of the lance in the circumferential direction can be set in a region different from the spring group. This makes it possible to prevent the lance from interfering with the spring portions during the process of inserting the shield terminal into the housing.

[0061] (3) In (2), it is preferable that a fixed contact portion capable of coming into contact with the mating outer conductor is formed in a position of the outer conductor closer to the circumferential edge than the group of springs in the circumferential direction. With this configuration, when the spring portion and the fixed contact portion are brought into contact with the mating outer conductor, stress is concentrated in the elastically deformed spring portion. Since the stress generated in the circumferential edge of the metal plate where the fixed contact portion is formed is kept small, misalignment between the circumferential edges is unlikely to occur. This makes it possible to suppress deformation of the outer conductor caused by misalignment between the circumferential edges.

[0062] (4) In (1) to (3), it is preferable that the outer conductor has a pair of slits extending in the front-rear direction, and the erroneous insertion prevention portion is formed by bending a portion of the outer conductor defined by the pair of slits. According to this configuration, a part of the region between the pair of slits in the outer conductor becomes a notch region by bending the erroneous insertion prevention portion. Here, since the slits extend in the front-rear direction rather than the circumferential direction, even if the length of the slits is increased to increase the radial protrusion dimension of the erroneous insertion prevention portion, the notch region between the slits does not expand in the circumferential direction. This makes it possible to prevent the opening edge of the notch region between the slits from interfering with the lance during the insertion process of the shield terminal. [Explanation of symbols]

[0063] 10...First shield connector (shielded connector) 11. Housing 12...Terminal chamber 13. Lance 14…Prevention protrusion 15...Terminal insertion port 16...Relief groove 17...Rotation restriction groove 20...First shield terminal (shield terminal) 21...First inner conductor (inner conductor) 22...First dielectric (dielectric) 23...First outer conductor (outer conductor) 24...Front cylindrical member (one cylindrical member) 24R...Rear end portion (end portion of one of the cylindrical members) 25...Metal plate material 25E…Circumferential edge 25R…Shear plane 25S…Shear plane 26…Small diameter part 27... Expanded diameter part 28…Large diameter section 29…Fixed contact part 30…Spring group 31...Spring part 32...Movable contact part 35…Misinsertion prevention part 35E…Extended end of incorrect insertion prevention part 36…Slit 37...First bending part 38…Second bending part 39...Abutment surface (front surface of incorrect insertion prevention part) 40…First opening (opening) 42...Rotation restriction part 43…Fold 44…Protrusion with backlash 50...Rear cylindrical member (the other cylindrical member) 50F...Front end portion of rear cylindrical member (end portion of the other cylindrical member) 51...Cylindrical main body 52...Cylindrical joint 53…Spot weld 54…Second opening 55...Support part 56…Edge section 57…Groove 58…Latching part 60…Coaxial cable 61...Core wire 62...Shielding material 70…Second shield connector 71…Second shield terminal 72…Second inner conductor 73...Second dielectric 74…Second outer conductor 75…tab 76…Fitting part C…Axis center

Claims

1. a shield terminal having an inner conductor, a dielectric and an outer conductor; a housing into which the shield terminal is inserted from the rear, The outer conductor is made of a metal plate and is configured by connecting two cylindrical members in the front-rear direction, the two cylindrical members having axes aligned in the front-rear direction. One of the two cylindrical members is integrally formed with a mis-insertion prevention part having a cantilevered shape and a bent shape so as to protrude radially outward, and a front surface of the mis-insertion prevention part is composed only of surfaces other than the shear surface, A shielded connector, in which the other of the two tubular members is formed with a support portion for supporting the extending end portion of the erroneous insertion prevention portion.

2. a rear end portion of the one tubular member is fitted onto a front end portion of the other tubular member, The erroneous insertion prevention portion extends rearward in a cantilever shape and is bent in a V shape, 2. The shielded connector according to claim 1, wherein the extending end of the erroneous insertion prevention portion is supported by an outer circumferential surface of the other tubular member.

3. the two tubular members are fixed to each other at spot welds in a state in which the ends of the two tubular members are coaxially fitted together, A pair of slits extending in a front-rear direction are formed in the end portion of the one cylindrical member, 3. The shielded connector according to claim 1, wherein the erroneous insertion prevention portion is formed of a portion of the one of the cylindrical members defined by the pair of slits.

4. an end portion of the one tubular member is fitted onto an end portion of the other tubular member, A pair of slits extending in a front-rear direction are formed in the end portion of the one cylindrical member, the erroneous insertion prevention portion is a portion of the one tubular member that is partitioned by the pair of slits, 3. The shielded connector according to claim 1, wherein the end of the other tubular member closes at least a portion of an opening formed between the pair of slits.

5. 3. A shielded connector as described in claim 1 or claim 2, wherein a clearance-reducing protrusion protruding radially outward is formed in an area of ​​the outer peripheral surface of the outer conductor opposite the mis-insertion prevention portion with respect to the axis of the outer conductor.

6. a locking portion is formed on an outer peripheral surface of the shield terminal at a position rearward of the erroneous insertion prevention portion, A lance is formed in the housing to lock the shield terminal in the locking portion, and the shield terminal is prevented from being pulled out when the shield terminal is inserted.

3. The shielded connector according to claim 1, wherein the erroneous insertion prevention portion is disposed in a circumferential region different from the lance.

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