Shielded connector

Abstract

The shielded connector includes an inner conductor (15), a dielectric (19) that houses the inner conductor (15), and an outer conductor (18) that surrounds the dielectric (19). The dielectric (19) has a stopper (34) that contacts the outer conductor (18) to stop the dielectric (19) from moving along the wall surface of the outer conductor (18). The contact between the stopper (34) and the outer conductor (18) prevents the dielectric (19) from being displaced relative to the outer conductor (18).

Description

Technical Field

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

[0002] Patent Document 1 discloses a shielded connector for use with shielded communications cables. This shielded connector comprises terminal components that connect to the shielded wires of the shielded cables, a housing (hereinafter referred to as a dielectric) that houses the terminal components, and a shield shell surrounding the housing. The shield shell has a cylindrical portion that is crimped to the shielded cable sheath. This type of shielded connector is also disclosed in Patent Document 2.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2013-229255

[0006] Patent Document 2: Japanese Patent Application Laid-Open No. 2012-18898 Summary of the Invention

[0007] Problems to be solved by the invention

[0008] In Patent Document 1, the sheath of the shielded wire is fixed by the barrel portion when the dielectric body is inserted into the shield shell. When the barrel portion is crimped, there is a possibility that the dielectric body may be displaced relative to the shield shell.

[0009] Therefore, an object of the present disclosure is to provide a shielded connector capable of preventing displacement of a dielectric body.

[0010] Solutions to Problems

[0011] The shielded connector disclosed herein comprises an inner conductor, a dielectric body accommodating the inner conductor, and an outer conductor surrounding the dielectric body. The dielectric body has a stopper that contacts the outer conductor to stop the dielectric body from moving along a wall surface of the outer conductor.

[0012] Effects of the Invention

[0013] According to the present disclosure, a shielded connector capable of preventing displacement of a dielectric body can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an exploded perspective view of a shielded connector.

[0015] Figure 2 is a side cross-sectional view of a shielded connector.

[0016] Figure 3 It is a cross-sectional view showing the outer conductor in a state after crimping.

[0017] Figure 4 It is a perspective view of a dielectric body housing an inner conductor.

[0018] Figure 5 It is a three-dimensional diagram of the supporting member.

[0019] Figure 6 It is a bottom view of the supporting structure.

[0020] Figure 7 It is a perspective view of the cover member.

[0021] Figure 8 It is a perspective view of the first outer conductor. DETAILED DESCRIPTION

[0022] [Description of Embodiments of the Present Disclosure]

[0023] First, embodiments of the present disclosure will be described below.

[0024] The connector of the present disclosure,

[0025] (1) A device comprising: an inner conductor; a dielectric member that houses the inner conductor; and an outer conductor that surrounds the dielectric member, wherein the dielectric member has a stopper that contacts the outer conductor to stop the dielectric member from moving along the wall surface of the outer conductor. For example, during crimping of the outer conductor, the stopper contacts the outer conductor, thereby stopping the dielectric member from moving along the wall surface of the outer conductor. Therefore, according to the above configuration, it is possible to prevent the dielectric member from being displaced relative to the outer conductor.

[0026] (2) Preferably, the dielectric body includes a support member for positioning the inner conductor and a cover member mounted on the support member, wherein the stopper is provided on the support member. Thus, in addition to being positioned by the support member, the inner conductor can also be positioned relative to the outer conductor via the stopper of the support member. Therefore, the distance between the inner and outer conductors can be maintained constant, enabling precise impedance adjustment.

[0027] (3) Preferably, the stopper is shaped to protrude into the space within the outer conductor. Thus, in the protruding region of the stopper within the outer conductor, the air layer that constitutes the space within the outer conductor is replaced by the resin or the like that constitutes the stopper. As a result, the stopper can function to adjust impedance.

[0028] (4) The outer conductor has a cylindrical outer conductor main body that is open at the front and back, and the outer conductor main body has a stopper portion at the rear end for the stopper to contact. The rear portion of the outer conductor main body including the rear end is thicker than the front portion including the front end. The dielectric can be prevented from moving forward (misalignment) relative to the outer conductor by the stopper contacting the stopper portion. In particular, because the stopper portion is provided in the thick rear portion of the outer conductor main body, the possibility of deformation due to interference with the stopper portion can be reduced. On the other hand, because the front portion of the outer conductor main body is thinner than the rear portion, it can have a spring structure that can be flexed and deformed, for example.

[0029] [Details of the embodiments of the present disclosure]

[0030] Specific examples of the shielded connector disclosed herein will be described below with reference to the accompanying drawings. The present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0031] <Example 1>

[0032] like Figure 1 As shown, the shielded connector of the first embodiment includes a housing 10, a first outer conductor 11, a second outer conductor 12, a support member 13, a cover member 14, a pair of inner conductors 15, a clamp 16, and a sleeve 17. The first outer conductor 11 and the second outer conductor 12 are assembled together to form an outer conductor 18. The support member 13 and the cover member 14 are assembled together to form a dielectric body 19. The portion of the shielded connector other than the housing 10 is constituted as a terminal module 20 (see FIG. Figure 2 ). In addition, in the following description, the front-back direction is Figure 1 The lower left of the front is the front, and the up and down directions are Figure 1 The directions shown are reference only.

[0033] The terminal module 20 is connected to the terminal end of the shielded electric wire 90. Figure 1 As shown, shielded electrical wire 90 includes a pair of covered electrical wires 93 surrounding an inner conductor 91 with an insulating coating; a shield layer 94, such as a braided wire, surrounding the pair of covered electrical wires 93; and a sheath 95 surrounding shield layer 94. The front end of shield layer 94 is folded back rearward to overlap the outer periphery of sheath 95, forming a folded portion 96.

[0034] The sleeve 17 is made of metal and has a cylindrical shape. It is installed between the outer periphery of the sheath 95 and the folded portion 96 of the shield layer 94. The clamp 16 is made of metal and has a plate shape. It holds the distal ends of the pair of covered wires 93 in position.

[0035] The pair of inner conductors 15 are connected to the pair of internal conductors 91. Each inner conductor 15 is positioned on the support member 13 and is housed in the dielectric body 19 in a state of being sandwiched between the support member 13 and the cover member 14 (see Figure 2 ).

[0036] The dielectric body 19 (support member 13 and cover member 14 ) is made of synthetic resin.

[0037] The support member 13 constitutes the upper portion of the dielectric body 19. Figure 5 As shown, the support member 13 includes: a support body portion 21 in the shape of a rectangular plate along the front-to-back direction and the left-to-right direction (width direction); a front wall portion 22, which protrudes downward from the front side of the support body portion 21 and forms a rectangular outer shape when viewed from the front; and a pair of side wall portions 23 on the left and right sides, which protrude downward from the support body portion 21 on the front and rear sides of the left and right ends of the support body portion 21, respectively. Each side wall portion 23 is divided into front and back by a notch portion 24. The pair of side wall portions 23 on the front side are connected to the left and right ends of the front wall portion 22. Each notch portion 24 is open on the upper surface of the support body portion 21 through the left and right ends of the support body portion 21. The support body portion 21 has a pair of left and right locking protrusions 25 on the open end surface of each notch portion 24. Each locking protrusion 25 extends into each notch portion 24.

[0038] The front wall portion 22 has a pair of left and right insertion holes 26. When the shielded connector is mated with a mating connector (not shown), a pair of mating terminals attached to the mating connector are inserted through the pair of insertion holes 26. Each mating terminal is formed in a tab or pin shape and is connected to each inner conductor 15. The front wall portion 22 has a pair of upper and lower notch-like recesses 27 at the upper and lower ends of the front surface, located between the insertion holes 26 in the left and right directions.

[0039] like Figure 6 As shown, the support body 21 has rib-shaped partitions 28 extending in the front-to-back direction in the left and right center portions of its lower surface. The front ends of the partitions 28 are connected to the portion between the insertion holes 26 in the rear surface of the front wall 22. The partitions 28 are divided into front and back sections near the front wall 22 by an opening 29 extending through the support body 21. An impedance adjustment member (not shown) can be inserted into the opening 29 between the front and rear partitions 28.

[0040] The supporting member 13 has a pair of terminal receiving portions 31 on the left and right sides of the partition wall 28. The pair of terminal receiving portions 31 are defined as concave by the front wall portion 22, the partition wall 28 and each pair of side wall portions 23. A pair of inner conductors 15 are received in the pair of terminal receiving portions 31. The pair of side wall portions 23 on the front side have a pair of retaining portions 32 near the lower end. Each retaining portion 32 is formed in a protrusion shape and protrudes into each terminal receiving portion 31. Each inner conductor 15 is inserted into the corresponding terminal receiving portion 31 from below, as shown in FIG. Figure 2 As shown, the locking portion 32 is fitted into the locking receiving portion 33 of the box-shaped portion, thereby being positioned relative to the support member 13 in the front-rear direction.

[0041] The support member 13 includes a stopper 34. The stopper 34 is rib-shaped, projecting upward from the rear end of the upper surface of the support body 21 and extending in the left-right direction. The stopper 34 is positioned further rearward than the pair of rear sidewalls 23. Obviously, the stopper 34 is positioned at the rearmost end of the dielectric body 19.

[0042] like Figure 5 As shown, the stopper 34 forms a quadrilateral cross-sectional shape, and except for the left and right ends, it becomes a shape connected with a fixed protruding size (up and down size) in the left and right directions. The left and right ends of the stopper 34 are arranged close to a pair of side wall portions 23 on the rear side. The left and right ends of the stopper 34 are excluding the left and right corners, and have a pair of inclined surfaces 35 that are inclined downward toward both sides. The front surface of the stopper 34 becomes a vertical surface along the up and down directions and the left and right directions as a whole. The front surface of the stopper 34 can touch the stopper 53 described later (refer to Figure 2 ).

[0043] The cover member 14 constitutes the lower portion of the dielectric body 19. Figure 7 As shown, the cover member 14 includes a rectangular plate-shaped cover body 36 and a pair of locking pieces 37 projecting upward from the left and right ends of the cover body 36. Each locking piece 37 is formed into a door-shaped frame and has a locking hole 38 therein.

[0044] During the process of assembling the cover member 14 to the support member 13, each locking piece 37 interferes with each locking protrusion 25 and is deformed in a manner of expanding to both sides. Then, each locking piece 37 elastically recovers and enters each notch 24, and fits into each locking protrusion 25 in each locking hole 38 (see Figure 4 When the cover member 14 is assembled to the support member 13, the cover body 36 closes the lower surface openings of the pair of terminal receiving portions 31. The cover body 36 has a pair of left and right pressing portions 39 on its upper surface. Each pressing portion 39 is formed into a flat trapezoidal shape and holds each inner conductor 15 between itself and the support body 21.

[0045] The outer conductor 18 (the first outer conductor 11 and the second outer conductor 12 ) is a metal plate and surrounds the inner conductor 15 and the dielectric 19 .

[0046] like Figure 1 As shown, the second outer conductor 12 has a box-shaped covering portion 41 with an open bottom surface, and an open cylindrical crimping portion 42 protruding rearward from the rear end of the covering portion 41. A locking protrusion 43 is protruding from the front end of the upper surface of the covering portion 41. The locking protrusion 43 is locked with a lance 44 of the housing 10 (see FIG. Figure 2The covering portion 41 has a pair of retaining pieces 45 protruding downward from both left and right sides. The crimping portion 42 has a plurality of crimping pieces 46 protruding downward from both left and right sides.

[0047] like Figure 8 As shown, the first outer conductor 11 has a square cylindrical outer conductor main body 47 and a protrusion 49 protruding rearward from the rear end of a lower plate portion 48 of the outer conductor main body 47. The outer conductor main body 47 has an upper plate portion 51, a lower plate portion 48 located below the upper plate portion 51, and a pair of left and right side plate portions 52 connecting the left and right ends of the upper plate portion 51 and the left and right ends of the lower plate portion 48. The rear end of the upper plate portion 51 is arranged in a straight line along the left-right direction. The rear end of the upper plate portion 51 constitutes a stopper portion 53 (see FIG. 3 ) that the stopper portion 34 contacts. Figure 2 ).

[0048] like Figure 8 As shown, the upper plate portion 51 and the lower plate portion 48 have a pair of upper and lower protrusions 54 bent inwardly in a mutually opposing manner at the left and right central portions of their respective front ends. Each protrusion 54 is formed into a rectangular plate shape and can be embedded in each recess 27 (refer to Figure 2 The upper plate portion 51 and the lower plate portion 48 each have a pair of left and right elastic portions 55. Each of the left and right side plate portions 52 has a single elastic portion 55. Each elastic portion 55 is positioned between slits 56 extending parallel to the front-to-back direction in each plate portion 48, 51, and 52. Furthermore, each elastic portion 55 is bent into a mountain shape toward the outer surface of the outer conductor body portion 47. Each elastic portion 55 is capable of flexing and deforming with its front and rear ends serving as fulcrums.

[0049] A step 57 is formed along the entire circumference of the inner surface of the outer conductor main body 47 in the inner and outer directions (radial direction). In the outer conductor main body 47, the front portion 58 on the front side is formed thinner than the rear portion 59 on the rear side, on both sides of the step 57. Figure 2 As shown, the inner surface of the front portion 58 is arranged so as to be recessed one step further outward than the rear portion 59 via a step 57. On the other hand, the outer surface of the front portion 58 is connected flush with the outer surface of the rear portion 59.

[0050] The front portion 58 is formed in the region extending from the front end of the outer conductor main body 47 to the step 57. Each elastic portion 55 is contained in the front portion 58. Since the front portion 58 is thinner than the rear portion 59, the elastic portions 55 can be smoothly flexed. Meanwhile, the rear portion 59 is formed in the region extending from the step 57 to the rear end of the outer conductor main body 47. The stopper 53 is contained in the rear portion 59. Since the rear portion 59 is thicker than the front portion 58, the durability of the stopper 53 can be improved.

[0051] Next, a method of manufacturing and operation of the terminal module 20 will be described.

[0052] First, each inner conductor 15 is inserted into each terminal receiving portion 31. The locking tabs 37 and the locking protrusions 25 engage, locking the cover member 14 to the support member 13, thereby forming the dielectric body 19. Each inner conductor 15 is positioned by the locking portion 32 of the support member 13 and is held between the support member 13 and the cover member 14.

[0053] Next, the dielectric 19 is inserted into the outer conductor body 47 from the rear. As the protrusions 54 of the outer conductor body 47 are fitted into the recesses 27 of the front wall 22, the front surface of the stopper 34 contacts the stopper 53 of the outer conductor body 47, thereby stopping the insertion of the dielectric 19. When the dielectric 19 is properly inserted into the outer conductor body 47, the folded portion 96 of the shield layer 94 is placed on the protrusion 49. A gap is formed between the outer surface of the dielectric 19 and the inner surface of the front portion 58 (see FIG. 1 ). Figure 2 Each elastic portion 55 can be bent and deformed toward the gap side.

[0054] Next, the covering portion 41 is positioned so as to cover the rear portion of the outer conductor main body portion 47 from above. In this state, the retaining pieces 45 are bent inwardly to crimp the lower plate portion 48, and the crimping portion 42 is crimped against the outer periphery of the folded portion 96. The tip of each crimping piece 46 is locked with the protrusion 49, thereby connecting the outer conductor 18 and the shield layer 94 to a conductive state.

[0055] Here, the stopper portion 34 is arranged in the space inside the second outer conductor 12, in front of the folded portion 96 and below the boundary region between the covering portion 41 and the crimping portion 42 (see FIG. Figure 2 The upper surface of the stopper portion 34 is arranged to be in contact with or close to the inner surface of the second outer conductor 12. During the crimping process of each crimping portion 42, the left and right end portions of the upper wall of the second outer conductor 12 are deformed in a downwardly curved manner. Figure 3 As shown, the deformed portion of the upper wall of the second outer conductor 12 ( Figure 3 The portions indicated by A in FIG. 3 are arranged close to the left and right ends of the stopper portion 34 but away from the inclined surfaces 35. In other words, the inclined surfaces 35 of the stopper portion 34 are shaped so as to be offset from the deformed portion of the upper wall of the second outer conductor 12.

[0056] Furthermore, during the crimping process of the crimping portions 42 and the like, the first outer conductor 11 and the dielectric 19 receive a crimping force from the second outer conductor 12 , and a displacement force acts on the dielectric 19 to move the dielectric 19 forward relative to the first outer conductor 11 .

[0057] However, in the case of the first embodiment, even if the above-mentioned displacement force acts on the dielectric body 19, the front surface of the stopper portion 34 is maintained in a state of being stopped by the stopper portion 53 of the outer conductor main body 47 or blocked by the stopper portion 53, thereby preventing the dielectric body 19 from moving forward relative to the first outer conductor 11. As a result, the relative position of the outer conductor 18 and the dielectric body 19 is maintained constant, and the distance between each inner conductor 15 and the outer conductor 18 is also maintained constant, thereby suppressing fluctuations in impedance.

[0058] Furthermore, when the aforementioned displacing force acts on the dielectric 19, the inner bottom surface of each recess 27 also contacts the protruding pieces 54, thereby preventing the dielectric 19 from moving relative to the first outer conductor 11. However, because the front portion 58 is thin and the protrusions 54 are small, the function of restricting the displacement of the dielectric 19 by the inner bottom surface of each recess 27 contacting the protruding pieces 54 is limited to the function of the auxiliary stopper 34 to restrict displacement.

[0059] The terminal module 20 completed as described above is inserted into the housing 10, and the locking protrusion 43 is locked with the lance 44, thereby preventing it from falling out in the housing 10 (see Figure 2 Then, the housing 10 is fitted with a mating connector (not shown), and the cylindrical mating outer conductor (not shown) surrounds the outer periphery of the front portion 58 of the outer conductor main body 47, and each elastic portion 55 is in conductive contact with the inner periphery of the mating outer conductor.

[0060] As described above, according to this embodiment, when the second outer conductor 12 is crimped to the first outer conductor 11, the dielectric 19 can be stopped by the contact of the stopper 34 with the outer conductor 18, moving forward along the inner surface (wall surface) of the outer conductor body 47. This prevents the dielectric 19 from being displaced relative to the first outer conductor 11 and, consequently, the outer conductor 18.

[0061] Furthermore, since the stopper 34 is provided on the support member 13 and the support member 13 includes the locking portion 32 for positioning each inner conductor 15 , the relative positions of each inner conductor 15 and the outer conductor 18 are also positioned, and the impedance can be adjusted with high accuracy.

[0062] Furthermore, since the stopper portion 34 is shaped so as to protrude into the space within the outer conductor 18, the space within the outer conductor 18 is filled by the protruding region of the stopper portion 34. In other words, in the protruding region of the stopper portion 34 within the outer conductor 18, the air layer that constitutes the space within the outer conductor 18 is replaced by the resin layer that constitutes the stopper portion 34. Therefore, the stopper portion 34 can function to adjust the impedance.

[0063] Furthermore, since the rear portion 59 of the outer conductor body 47 having the stopper portion 53 is thicker than the front portion 58, the possibility of deformation due to interference with the stopper portion 34 can be reduced. On the other hand, since each elastic portion 55 is provided in the front portion 58, which is thinner than the rear portion 59, it can be smoothly flexed and deformed.

[0064] [Other embodiments]

[0065] The embodiments disclosed this time should be considered in all respects as illustrative and non-restrictive.

[0066] In the first embodiment, the outer conductor main body is formed in a square cylindrical shape. However, in another embodiment, the outer conductor main body may be formed in a cylindrical shape.

[0067] In the first embodiment, the outer conductor is composed of two members, namely the first outer conductor and the second outer conductor. However, as another embodiment, the outer conductor may be composed of a single, inseparable member.

[0068] In the first embodiment described above, the dielectric body is composed of the support member and the cover member. However, as another embodiment, the dielectric body may be composed of a single inseparable member.

[0069] In the first embodiment, the stopper is configured to abut against the rear end of the outer conductor main body. However, as another embodiment, the stopper may abut against a step portion provided midway along the outer conductor in the front-rear direction.

[0070] In the first embodiment, the stopper is configured to restrict the forward movement of the dielectric relative to the outer conductor. However, as another embodiment, the stopper may be configured to restrict the rearward or sideward movement of the dielectric relative to the outer conductor.

[0071] In the above-mentioned embodiment 1, a pair of inner conductors are provided. However, as other embodiments, the number of inner conductors is not limited and can be one or three or more.

[0072] Description of Reference Numerals

[0073] 10: Shell

[0074] 11: First outer conductor

[0075] 12: Second outer conductor

[0076] 13: Supporting member

[0077] 14: Cover member

[0078] 15: Inner conductor

[0079] 16: Clamping parts

[0080] 17: Casing

[0081] 18: Outer conductor

[0082] 19: Dielectric

[0083] 20: Terminal module

[0084] 21: Support main body part

[0085] 22: Anterior wall

[0086] 23: Side wall

[0087] 24: Notch

[0088] 25: Locking protrusion

[0089] 26: Through hole

[0090] 27: concave part

[0091] 28: Next Door

[0092] 29: Opening

[0093] 31: Terminal storage

[0094] 32: Stopper

[0095] 33: Locking receiving part

[0096] 34: Stopper

[0097] 35: Bevel

[0098] 36: Cover body

[0099] 37: Cleats

[0100] 38: Keyhole

[0101] 39: Pressing part

[0102] 41: Covering

[0103] 42: Crimping part

[0104] 43: Locking protrusion

[0105] 44: Spear

[0106] 45: Keep piece

[0107] 46: Crimping piece

[0108] 47: Outer conductor body

[0109] 48: Lower plate

[0110] 49: Protrusion

[0111] 51: Upper plate part

[0112] 52: Side panel

[0113] 53: Stopper

[0114] 54: Tab

[0115] 55: Elastic part

[0116] 56: Slit

[0117] 57: Stairs

[0118] 58: Front part

[0119] 59: rear part

[0120] 90: Shielded wire

[0121] 91: Inner conductor

[0122] 93: Coated wire

[0123] 94: Shielding layer

[0124] 95: Sheath

[0125] 96: Turnback

[0126] A: Deformed part

Claims

1. A shielded connector comprising: inner conductor; a dielectric body for housing the inner conductor; and an outer conductor surrounding the dielectric body, The dielectric body has a stopper portion, and the stopper portion contacts the outer conductor to stop the movement of the dielectric body along the wall surface of the outer conductor. The outer conductor includes a first outer conductor and a second outer conductor, The first outer conductor has a cylindrical outer conductor main body portion opened at the front and rear ends. The rear end of the outer conductor main body forms a stopper for the stopper to contact. The rear portion of the outer conductor main body including the rear end is thicker than the front portion including the front end. The stopper is formed at the rear end of the dielectric body in the shape of a rib protruding upward and extending in the width direction. The upper surface of the stopper is configured to be in contact with or close to the inner surface of the outer conductor, The stopper is shaped to protrude into the space within the outer conductor.

2. The shielded connector according to claim 1, wherein: The dielectric body includes a support member for positioning the inner conductor and a cover member mounted on the support member. The stopper is provided on the supporting member.

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