Connector and cable with connector

Abstract

A cable (1) with a connector has a cable (10) and a connector (20). The cable (10) has a covered electric wire (11) and a shield member (braided wire 14) that surrounds the outer periphery of the covered electric wire (11). The covered electric wire (11) has a core wire (12) and an insulating covering portion (13) that covers the outer periphery of the core wire (12). The connector (20) is connected to the end portion of the cable (10). The connector (20) has an electrically conductive inner conductor (30) that has a wire connecting portion (wire barrel 32) connected to the core wire (12) and a terminal connecting portion (31) electrically connected to a tab portion (T) of a counterpart terminal. The connector (20) also has a dielectric body (40) made of synthetic resin that has a cavity (45) that houses the inner conductor (30). The connector (20) also has an electrically conductive outer conductor (70) that surrounds the dielectric body (40). The dielectric body (40) has a first wall portion (interlayer spacing wall 47) adjacent to the inner conductor (30). A portion of the first wall portion is a thin wall portion (47B) having a thickness smaller than the thickness of other portions.

Description

Technical Field

[0001] The technology disclosed in this specification relates to connectors and cables with connectors. Background Technology

[0002] A cable with a connector is known, comprising a shielded wire and a connector connected to the end of the shielded wire. The shielded wire comprises a shielding wire, a shielding foil covering the outer periphery of the shielding wire, and a sheath covering the outer periphery of the shielding foil. The shielding wire comprises a core wire and an insulating covering portion covering the outer periphery of the core wire. The connector comprises a male terminal (inner conductor) connected to the core wire, an insulating inner shell covering the male terminal, and a shielding shell covering the inner shell.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2013-229255 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In the connector with the above structure, the inner conductor has more metal than the shield wire, resulting in a significant change in characteristic impedance between the core wire and the inner conductor. At the point of characteristic impedance change, signal reflection can occur, potentially degrading communication quality.

[0008] Solution for solving the problem

[0009] The connector disclosed in this specification is connected to the end of a cable, the cable having an insulated wire and a shielding member surrounding the outer periphery of the insulated wire, the insulated wire having a core wire and an insulating covering portion surrounding the outer periphery of the core wire, the connector having: a conductive inner conductor having a wire connection portion connected to the core wire and a terminal connection portion electrically connected to a counterparty terminal; a dielectric body made of synthetic resin having a cavity for receiving the inner conductor; and a conductive outer conductor surrounding the dielectric body, the dielectric body having a first wall portion adjacent to the inner conductor, a portion of the first wall portion being a thin-walled portion with a thickness smaller than that of other portions.

[0010] Furthermore, the connector-equipped cable disclosed in this specification comprises a cable and a connector. The cable includes an insulated wire and a shielding member surrounding the outer periphery of the insulated wire. The insulated wire includes a core wire and an insulating covering portion surrounding the outer periphery of the core wire. The connector is connected to the end portion of the cable. The connector includes: a conductive inner conductor having a wire connection portion connected to the core wire and a terminal connection portion electrically connected to a counterparty terminal; a dielectric body made of synthetic resin having a cavity for receiving the inner conductor; and a conductive outer conductor surrounding the dielectric body. The dielectric body has a first wall portion adjacent to the inner conductor, a portion of which is a thin-walled portion with a thickness smaller than that of other portions.

[0011] Invention Effects

[0012] The connectors and cables with connectors disclosed in this specification can suppress the degradation of communication quality caused by large variations in characteristic impedance. Attached Figure Description

[0013] Figure 1 This is a perspective view of a cable with a connector according to an embodiment.

[0014] Figure 2 This is an exploded perspective view of the cable with connector according to the embodiment.

[0015] Figure 3 This is a perspective view showing the state of the cable assembly with an inner conductor in the embodiment.

[0016] Figure 4 This is a three-dimensional view of the inner conductor in the implementation method.

[0017] Figure 5 This is a perspective view showing the state of the dielectric being assembled at the end of the inner conductor and cable in an embodiment.

[0018] Figure 6 This is a perspective view of the dielectric body of the embodiment.

[0019] Figure 7 This is a top view showing the state in which the dielectric body is assembled at the end of the inner conductor and the cable in the embodiment.

[0020] Figure 8 yes Figure 7 A sectional view along line AA.

[0021] Figure 9 yes Figure 7 BB line section view.

[0022] Figure 10 This is a perspective view of the top cover of the implementation method.

[0023] Figure 11 This is a perspective view showing the state of the dielectric material before the outer conductor is assembled in the embodiment.

[0024] Figure 12 This is a perspective view showing the state of the outer conductor before it is assembled into the housing in the embodiment. Detailed Implementation

[0025] [Summary of Implementation Methods]

[0026] (1) A connector disclosed in this specification is connected to the end of a cable, the cable having a sheathed wire and a shielding member surrounding the outer periphery of the sheathed wire, the sheathed wire having a core wire and an insulating sheathing portion surrounding the outer periphery of the core wire, the connector having: a conductive inner conductor having a wire connection portion connected to the core wire and a terminal connection portion electrically connected to a counterparty terminal; a dielectric body made of synthetic resin having a cavity for receiving the inner conductor; and a conductive outer conductor surrounding the dielectric body, the dielectric body having a first wall portion adjacent to the inner conductor, a portion of the first wall portion being a thin-walled portion with a thickness smaller than that of other portions.

[0027] Furthermore, the connector-equipped cable disclosed in this specification comprises a cable and a connector. The cable includes an insulated wire and a shielding member surrounding the outer periphery of the insulated wire. The insulated wire includes a core wire and an insulating covering portion surrounding the outer periphery of the core wire. The connector is connected to the end portion of the cable. The connector includes: a conductive inner conductor having a wire connection portion connected to the core wire and a terminal connection portion electrically connected to a counterparty terminal; a dielectric body made of synthetic resin having a cavity for receiving the inner conductor; and a conductive outer conductor surrounding the dielectric body. The dielectric body has a first wall portion adjacent to the inner conductor, a portion of which is a thin-walled portion with a thickness smaller than that of other portions.

[0028] Based on the above structure, compared to the case where the first wall portion does not have a thin-walled portion, the amount of synthetic resin constituting the first wall portion is less than that of the other portions, and correspondingly, a void exists around the inner conductor. Since the dielectric constant of air is lower than that of synthetic resin, by reducing the amount of synthetic resin around the inner conductor and creating voids, the decrease in characteristic impedance can be suppressed. Furthermore, the voids created by providing the thin-walled portion can be used as space to insert a disassembly jig when removing the inner conductor from the dielectric.

[0029] (2) Alternatively, the terminal connection portion may have an open end with an opening and a connecting cylinder portion that receives the other terminal inside, wherein the thin-walled portion and the portion of the connecting cylinder portion that is different from the open end are arranged adjacent to each other.

[0030] With this structure, the thin-walled portion is positioned adjacent to the connecting cylinder portion, which has a higher metal content in the inner conductor than other parts, thereby effectively suppressing the decrease in characteristic impedance. Furthermore, the thin-walled portion is positioned to avoid the open ends of the connecting cylinder portion where a decrease in insulation withstand voltage is likely to occur, thus ensuring insulation withstand voltage.

[0031] (3) Alternatively, the dielectric may have a second wall portion adjacent to the inner conductor, and the second wall portion may have a through hole.

[0032] With this structure, compared to the case where the second wall does not have a through hole, the amount of synthetic resin constituting the second wall is less than that of the other parts, and correspondingly, space exists around the inner conductor. Because the dielectric constant of air is lower than that of synthetic resin, the amount of synthetic resin around the inner conductor can be reduced, and by configuring the space, the decrease in characteristic impedance can be suppressed.

[0033] Furthermore, the second wall portion can be the same as the first wall portion or a different wall portion.

[0034] (4) Alternatively, the terminal connection portion may have an open end with an opening and a connecting cylinder portion that receives the other terminal inside, and the through hole may be arranged adjacent to a portion of the connecting cylinder portion that is different from the open end.

[0035] With this structure, the connecting cylinder portion, where the metal content in the inner conductor is greater than that in other parts, is positioned adjacent to the through hole, thereby effectively suppressing the decrease in characteristic impedance. Furthermore, by positioning the through hole away from the open end of the connecting cylinder portion where a decrease in insulation withstand voltage is likely to occur, the insulation withstand voltage is ensured.

[0036] (5) Alternatively, the terminal connection portion may have a contact portion that contacts the other terminal, and the through hole may be disposed adjacent to the portion of the inner conductor in which the contact portion is disposed.

[0037] The portion of the terminal connection where the contact point is located tends to have a higher metal content compared to other parts. By arranging a through hole adjacent to this portion, the decrease in characteristic impedance can be effectively suppressed.

[0038] (6) Alternatively, the dielectric may have a retaining protrusion that protrudes into the cavity and engages with the inner conductor, thereby retaining the inner conductor inside the cavity. The retaining protrusion and the through hole are arranged in a direction orthogonal to the second wall portion.

[0039] Based on this structure, the through hole can be used as a punch to form a retaining protrusion when the dielectric is formed.

[0040] (7) Alternatively, the dielectric may comprise: a dielectric body having the first wall portion; and a cover assembled to the dielectric body to cover the first wall portion. Or, the dielectric may comprise: a dielectric body having the second wall portion; and a cover assembled to the dielectric body to cover the second wall portion.

[0041] This structure prevents foreign objects from entering the interior of the space created by the thin-walled section or through-hole.

[0042] [Details of the implementation method]

[0043] The following is a reference to the appendix. Figure 1 Specific examples of the technology disclosed in this specification are illustrated below. Furthermore, the invention is not limited to these examples, but as indicated by the claims, it is intended to include all modifications within the meaning and scope equivalent to the claims.

[0044] <Implementation Method>

[0045] While referring to Figures 1 to 12 The implementation method will be described below. This implementation method illustrates the following example: a cable 1 with a connector for communication: a wired communication path mounted on a vehicle such as an automobile, between an in-vehicle electrical installation (car navigation system, ETC, monitor, etc.) and an external device (camera, etc.), or between in-vehicle electrical installations.

[0046] like Figure 1 and Figure 2 As shown, the cable 1 with connector includes a cable 10 and a connector 20 connected to the end of the cable 10. The cable 10 includes a sheathed wire 11. In the following description, the extension direction of the sheathed wire 11 will be... Figure 2 The Y-axis direction is taken as the front and back direction, and one of the two directions perpendicular to the extension direction of the covered wire 11 is taken as the back and front direction. Figure 2 The X-axis direction is used as the left and right direction, and the other direction ( Figure 2 The Z-axis direction is used as the up and down direction. For multiple components, sometimes only some components are labeled with reference numerals, while the reference numerals for other components are omitted.

[0047] [Cable 10]

[0048] like Figure 2 and Figure 3As shown, the cable 10 includes multiple (four in this embodiment) sheathed wires 11, a braided wire 14 (an example of a shielding member) covering the multiple sheathed wires 11 together, and a sheath 15 covering the outer periphery of the braided wire 14. Each sheathed wire 11 has a conductive core wire 12 and an insulating covering portion 13 surrounding the outer periphery of the core wire 12. The core wire 12 can be a core wire made of a single metal wire, or it can be a core wire made of multiple metal wires twisted together. The insulating covering portion 13 and the sheath 15 are made of insulating synthetic resin. The braided wire 14 is a member in which multiple fine metal wires (metal wires) are braided into a mesh and formed into a cylindrical shape. The multiple sheathed wires 11 are covered by the braided wire 14 and the sheath 15 in a twisted state.

[0049] At the end of cable 10, the sheath 15 is stripped, exposing the ends of the braided wires 14. The exposed ends of the braided wires 14 are folded back towards the sheath 15 and overlap with the outer side of the sheath 15. A metal sleeve 16 is crimped to the outer periphery of the sheath 15, outside the end of the sheath 15 and inside the braided wires 14 that overlap with the end of the sheath 15. Figure 2 The image shows the state where the sheath 15 has been peeled off, and the ends of the braided threads 14 are exposed from the sheath 15. Figure 3 The diagram shows the braided wire 14 folded back and overlapping with the outer sides of the sheath 15 and sleeve 16. Furthermore, the end of the covered wire 11 is exposed from the sheath 15 and braided wire 14 in a de-twisted state. At the end of the covered wire 11, the insulation covering 13 is stripped, exposing the core wire 12 from the insulation covering 13.

[0050] [Connector 20]

[0051] The connector 20 includes: a conductive inner conductor 30 connected to the sheathed wire 11; an insulating dielectric 40 surrounding the inner conductor 30; a conductive outer conductor 70 surrounding the dielectric 40; and a housing 90 that houses all of these components.

[0052] [Inner conductor 30]

[0053] The inner conductor 30 is a female terminal formed by stamping a metal sheet. For example... Figure 3 and Figure 4 As shown, the inner conductor 30 includes: a terminal connection portion 31, which is electrically connected to a male terminal that serves as the opposite terminal; and a wire spool 32 (an example of a wire connection portion), which is connected to the terminal connection portion 31 and connected to the sheathed wire 11.

[0054] like Figure 9As shown, the terminal connection portion 31 includes: a cylindrical connection portion 33 that houses the protrusion T of the male terminal; and an elastic contact piece 38 disposed inside the connection portion 33 and in contact with the protrusion T.

[0055] like Figure 4 , Figure 8 as well as Figure 9 As shown, the connecting cylindrical portion 33 is a square tube open at both ends. One of the two open ends 33A and 33B becomes the first open end 33A into which the tab T is inserted, and the other becomes the second open end 33B. The connecting cylindrical portion 33 is constructed by a bottom wall 34, a pair of first side walls 35A and 35B, and a top wall 36. The bottom wall 34 is an elongated plate with a pair of side edges. Each of the pair of first side walls 35A and 35B is an elongated plate, rising vertically from the two side edges of the bottom wall 34 relative to the bottom wall 34. The two first side walls 35A and 35B are arranged opposite each other. The top wall 36 is an elongated plate, connected to one of the first side walls 35A, extending toward the other first side wall 35B, and arranged opposite the bottom wall 34. Two overlapping plates 37A and 37B are disposed overlappingly on the outer surface of the top wall 36. The two overlapping plates 37A and 37B are connected to the other first side wall 35B and extend toward the first side wall 35A. One of the two overlapping plates 37A and 37B is a first overlapping plate 37A disposed adjacent to the first opening end 33A, and the other is a second overlapping plate 37B disposed adjacent to the second opening end 33B.

[0056] The elastic contact piece 38 is in the shape of a leaf spring, such as... Figure 9 As shown, it is arranged along the top wall 36. One end of the elastic contact piece 38 becomes a base end 38A connected to the first opening end 33A, and the other end becomes a free end 38B. The portion of the elastic contact piece 38 on the base end 38A side gradually moves away from the top wall 36 as it moves away from the first opening end 33A, and the remaining portion of the elastic contact piece 38 near the free end 38B forms a mountain shape that gradually approaches the top wall 36 as it moves away from the first opening end 33A. The apex of the mountain bulges out in a dome shape towards the bottom wall 34, becoming a contact point 38C that contacts the protruding piece T.

[0057] like Figure 9 As shown, a portion of the bottom wall 34 opposite to the contact portion 38C bulges out toward the contact portion 38C. This bulging portion becomes the pressure-receiving portion 34A, which clamps the tab portion T between itself and the contact portion 38C to ensure contact pressure with the tab portion T.

[0058] like Figure 4 As shown, the spool 32 extends from the second open end 33B, as... Figure 3 As shown, it is crimped onto the core wire 12 exposed from the insulating covering portion 13 of the covered wire 11 and electrically connected to the core wire 12.

[0059] [Dielectric 40]

[0060] Dielectric 40 is made of synthetic resin, such as Figure 5 As shown, it includes a dielectric body 41 and an upper cover 51A (an example of a cover) and a lower cover 51B (an example of a cover) assembled on the dielectric body 41.

[0061] like Figure 6 As shown, the dielectric body 41 is generally formed into a cuboid shape that is longer in the front-to-back direction. The dielectric body 41 has an inner conductor holding portion 42 and a first wire holding portion 61A. The inner conductor holding portion 42 has a front wall 43 and a pair of left and right second side walls 44 extending vertically from the front wall 43.

[0062] like Figure 6 , Figure 7 , Figure 8 as well as Figure 9 As shown, the inner conductor holding portion 42 has multiple cavities 45 (four chambers in this embodiment) between the two second sidewalls 44, each accommodating a plurality of inner conductors 30. The four chambers 45 are arranged in two layers, with two chambers in each layer. The two chambers 45 constituting the upper cavity row (first cavity row 45L1) are grooves extending perpendicularly to the front wall 43 and open at the top. The two chambers 45 constituting the lower cavity row (second cavity row 45L2) are grooves extending perpendicularly to the front wall 43 and open at the bottom. Furthermore, for ease of viewing in the drawings, in… Figure 7 and Figure 8 The inner conductor 30, which is partially housed in cavity 45, is not shown in the diagram.

[0063] like Figure 6 , Figure 7 , Figure 8 as well as Figure 9 As shown, the inner conductor holding portion 42 includes a column spacer 46 (an example of the second wall portion) and a layer spacer 47 (an example of the first wall portion). The column spacer 46 is arranged perpendicularly to the second sidewall 44 and connects between two second sidewalls 44. The column spacer 46 separates the cavities 45 constituting the first cavity row 45L1 and the cavities 45 constituting the second cavity row 45L2. The layer spacer 47 extends perpendicularly from the column spacer 46 and separates two adjacent cavities 45 of the first cavity row 45L1 and two adjacent cavities 45 of the second cavity row 45L2.

[0064] like Figure 6 , Figure 7 , Figure 8 as well as Figure 9 As shown, the column partition wall 46 has a through hole 46A, which communicates with the cavity 45 constituting the first cavity column 45L1 and the cavity 45 constituting the second cavity column 45L2.

[0065] like Figure 6 and Figure 7 As shown, the partition wall 47 has a recess 47A that is recessed from the surface opposite to the inner conductor 30 housed inside the cavity 45. One partition wall 47 has two recesses 47A arranged back-to-back. One of the two recesses 47A is disposed on the surface opposite to one of the two inner conductors 30 housed in the two cavities 45 disposed on both sides of the partition wall 47. The other recess is disposed on the surface opposite to the other of the two inner conductors 30. The portion of the partition wall 47 located between the two recesses 47A is a thin-walled portion 47B with a thickness smaller than the other portions.

[0066] like Figure 6 , Figure 8 as well as Figure 9 As shown, the inner conductor holding portion 42 includes a holding protrusion 48. One holding protrusion 48 is provided for each cavity 45. Each holding protrusion 48 holds the inner conductor 30 inside the cavity 45 by protruding into the inside of the cavity 45 and engaging with it.

[0067] like Figure 8 As shown, retaining protrusions 48 protruding into one cavity 45 constituting the first cavity row 45L1, retaining protrusions 48 protruding into other cavities 45 adjacent to the first cavity 45 and constituting the second cavity row 45L2, and through holes 46A disposed between these two cavities 45 are arranged in a row along the vertical direction, that is, perpendicular to the row spacer wall 46. Furthermore, the retaining protrusions 48 disposed in one cavity 45 protrude from the second side wall 44, and the retaining protrusions 48 disposed in the other cavities 45 protrude from the layer spacer wall 47. In other words, the retaining protrusions 48 disposed in one cavity 45 and the retaining protrusions 48 disposed in the other cavities 45 protrude from walls on different sides relative to the inner conductor 30. With this structure, the through holes 46A can be used as punches for forming the retaining protrusions 48 during the forming of the inner conductor 30.

[0068] like Figure 9 As shown, the front wall 43 has a tab insertion hole 43A that communicates with multiple cavities 45 and allows the tab portion T to be inserted. Additionally, as... Figure 6 As shown, the inner conductor holding portion 42 has a plurality of locking protrusions 49 protruding outward from each of the left and right second sidewalls 44.

[0069] like Figure 6 As shown, the first wire holding part 61A is block-shaped and connected to the rear end of the inner conductor holding part 42. The first wire holding part 61A has a first wire holding groove 62A that communicates with each of the four chambers 45. Each first wire holding groove 62A is a groove defined by a U-shaped pool-shaped inner wall surface along the outer peripheral surface of the insulating covering part 13 in the covered wire 11.

[0070] like Figure 10 As shown, the upper cover 51A includes a plate-shaped cover body 52, plate-shaped locking plates 53 extending from both sides of the cover body 52, and a second wire holding portion 61B connected to the rear end of the cover body 52. ​​The second wire holding portion 61B has two second wire holding grooves 62B. Each second wire holding groove 62B is defined by a U-shaped, pool-shaped inner wall surface that runs along the outer peripheral surface of the insulating covering portion 13 in the covered wire 11. The locking plate 53 has a locking hole 53A that receives a locking protrusion 49 provided in the dielectric body 41. Figure 5 and Figure 10 As shown, the top cover 51A is assembled to the dielectric body 41 from the top. The cover body 52 is arranged parallel to the column spacer wall 46, covering the inner conductor 30 housed in the cavity 45 constituting the first cavity column 45L1 from the top.

[0071] The lower cover 51B is assembled to the dielectric body 41 from the bottom, covering the inner conductor 30 housed in the cavity 45 constituting the second cavity row 45L2 from the bottom. Since the lower cover 51B has the same structure as the upper cover 51A, the same reference numerals are used for the same structure, and the description is omitted.

[0072] [Outer conductor 70]

[0073] The outer conductor 70 is made of metal, such as Figure 11 As shown, it has a first outer conductor 71 assembled from the bottom of the dielectric 40 and a second outer conductor 81 assembled from the top of the dielectric 40.

[0074] The first outer conductor 71 includes: a lower wall 72 disposed along the cover body 52 of the lower cover 51B; a pair of third sidewalls 73 and a pair of locking tabs 74 extending from the two side edges of the lower wall 72 and disposed opposite to each other; and a strip-shaped fixing sleeve 75 connected to the rear end of the lower wall 72 and wound around the portion of the braided wire 14 folded back at the end of the sheath 15. The pair of third sidewalls 73 have L-shaped slits 76, the portion defined by the slits 76 becoming an outwardly bulging portion 77. The locking tabs 74 have locking holes 74A that receive locking protrusions 49 provided in the dielectric body 41.

[0075] The second outer conductor 81 includes: an upper wall 82 disposed along the cover body 52 of the upper cover 51A; a pair of fourth side walls 83 extending from both sides of the upper wall 82 and disposed on the outer side of the third side wall 73 and the locking plate 74; and a tongue 84 extending from the upper wall 82. Each fourth side wall 83 has a receiving hole 83A, which receives a bulge 77 of the third side wall 73. The tongue 84 is an elongated plate-shaped piece that extends rearward from the rear end of the upper wall 82.

[0076] [Shell 90]

[0077] The casing 90 is made of synthetic resin, such as Figure 12 As shown, the overall structure is a square tube shape with openings at both ends. A locking arm 91 is provided on the peripheral wall of the housing 90, which can elastically deform in the direction of approaching or moving away from the upper wall 82. The locking arm 91 has a locking part (not shown) that protrudes into the interior of the housing 90 and can be locked onto the outer conductor 70.

[0078] [Assembly process of cable 1 with connector]

[0079] Next, an example of the assembly process of the connector-equipped cable 1 in this embodiment will be described.

[0080] First, perform end treatment of cable 10 (refer to...). Figure 2 , Figure 3 At the end of cable 10, the sheath 15 is stripped to a predetermined length, exposing the braided wire 14. The braided wire 14 is then cut to a predetermined length, exposing the insulated wire 11. Next, at the end of the insulated wire 11, the insulation sheath 13 is stripped to a predetermined length, exposing the core wire 12. Then, a sleeve 16 is fitted over the end of the sheath 15. By folding back the braided wire 14 exposed from the sheath 15, the braided wire 14 covers the outside of the sleeve 16. The end treatment of cable 10 is thus completed.

[0081] Next, the inner conductor 30 is assembled onto the cable 10 (see reference). Figure 3 The inner conductor 30 is connected to the end of the covered wire 11 by crimping the core wire 12 exposed at the end of each covered wire 11 with the wire spool 32. As described above, the assembly process of the inner conductor 30 is completed.

[0082] Next, dielectric 40 is assembled at the inner conductor 30 and the end of the cable 10 (see reference). Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 11 Each inner conductor 30 is housed inside its respective cavity 45 with its first open end 33A facing the front wall 43. Additionally, the end portion of the insulating covering 13, adjacent to the portion of the core wire 12 exposed in the covered wire 11, is housed inside each first wire holding groove 62A. Next, the upper cover 51A is assembled to the dielectric body 41 from above, and the lower cover 51B is assembled to the dielectric body 41 from below. The upper cover 51A and the lower cover 51B are fixed to the dielectric body 41 by the locking protrusion 49 entering the locking hole 53A of the locking plate 53 and engaging with the edge of the locking hole 53A. Thus, the assembly process of the dielectric body 40 is completed.

[0083] In the state where the dielectric 40 is assembled, such as Figure 8 and Figure 9 As shown, each inner conductor 30 is housed within the cavity 45 with its bottom wall 34 facing the column spacer 46, one of the two first sidewalls 35A and 35B facing the layer spacer 47, and the other facing the second sidewall 44. The inner conductor 30 is prevented from detaching from the cavity 45 by being secured to the rear end of the first overlapping piece 37A by each retaining protrusion 48. Figure 7 As shown, the thin-walled portion 47B is arranged to avoid the opening ends 33A and 33B, with its entirety adjacent to one of the first side walls 35A and 35B. That is, the thin-walled portion 47B is arranged at a position different from the opening ends 33A and 33B, with its entirety adjacent to the wall of the connecting cylinder portion 33. Furthermore, the thin-walled portion 47B is arranged at a different position in the connecting cylinder portion 33 than in the portion where the two overlapping pieces 37A and 37B are arranged. Additionally, as... Figure 9 As shown, the through hole 46A is positioned to avoid the opening ends 33A and 33B, with its entirety adjacent to the bottom wall 34. That is, the through hole 46A is positioned at a different location from the opening ends 33A and 33B, with its entirety adjacent to the wall of the connecting cylinder portion 33. Furthermore, the through hole 46A is positioned adjacent to the portion of the inner conductor 30 where the contact portion 38C is located.

[0084] In addition, such as Figure 11 As shown, the end portion of the insulation-covered portion 13 is held by the wire holding portion 61, which is composed of a first wire holding portion 61A, an upper cover 51A, and a lower cover 51B, and a second wire holding portion 61B. More specifically, the wire holding portion 61 has a wire holding hole 62, which is defined by the inner peripheral surface of each first wire holding groove 62A and the inner peripheral surface of each second wire holding groove 62B opposite to it. The wire holding hole 62 has an inner diameter that is approximately equal to the outer diameter of the insulation-covered portion 13. Furthermore, the end portion of the insulation-covered portion 13 is tightly received inside the wire holding hole 62. Here, at the end of the cable 10, the end portion of the covered wire 11 is exposed from the sheath 15 in an untwisted state. In this part, the spacing between the multiple covered wires 11 can easily change, which may cause characteristic impedance disorder and reduced communication quality. However, in this embodiment, since the end portion of the insulation-covered portion 13 is held by the wire holding portion 61, characteristic impedance disorder can be suppressed. Furthermore, by not providing an insulating cylinder that is pressed against the end of the insulating covering portion 13 in the inner conductor 30, the posture of the covered wire 11 can be controlled, thus enabling the inner conductor 30 to be miniaturized.

[0085] Furthermore, the four cavities 45, the column spacers 46, the layer spacers 47, and the inner conductor 30 housed within the cavities 45 are surrounded on all four sides by a pair of second sidewalls 44 and a pair of cover bodies 52. This prevents foreign objects from entering the interior of the dielectric 40. In particular, in this embodiment, the layer spacers 47 have recesses 47A, and the column spacers 46 have through holes 46A; however, because the layer spacers 47 and column spacers 46 are covered by the upper cover 51A and the lower cover 51B, foreign objects are prevented from entering the interior of these recesses 47A and through holes 46A.

[0086] Next, the outer conductor 70 is assembled on the dielectric 40 (refer to...). Figure 11 , 12 First, the first outer conductor 71 is assembled to the dielectric body 40 from the bottom. Each locking protrusion 49 enters the interior of the locking hole 74A of each locking piece 74 and engages with the edge of the locking hole 74A, thereby fixing the first outer conductor 71 to the dielectric body 41. Next, the second outer conductor 81 is assembled to the dielectric body 40 and the first outer conductor 71 assembled to the dielectric body 40 from the top. It enters the interior of the receiving hole 83A through the protrusion 77 and engages with the edge of the receiving hole 83A, thereby fixing the second outer conductor 81 to the first outer conductor 71. In this state, the tongue 84 overlaps with the end of the braided wire 14, which is folded back in a manner that overlaps with the end of the sheath 15. Next, the fixing sleeve 75 is pressed against it by winding around the end of the folded-back braided wire 14 and the tongue 84. As described above, the assembly process of the outer conductor 70 is completed. The outer conductor 70 is formed into a cylindrical shape by combining the first outer conductor 71 and the second outer conductor 81, which surrounds the end of the cable 10 and the dielectric 40.

[0087] Next, the housing 90 is assembled on the outer conductor 70 (refer to...). Figure 1 , Figure 12 The outer conductor 70 is inserted into the housing 90. When the outer conductor 70 is in its proper storage position within the housing 90, it is held in place by a spear-shaped part (not shown). As described above, the assembly process of the cable 1 with connector is complete.

[0088] [Assembly of cable 1 with connector and the other connector]

[0089] When assembling cable 1 with connector to the other connector, such as Figure 9 As shown, the male terminal of the other connector has a protruding tab T that enters the interior of the connecting sleeve 33. The protruding tab T is held by the contact portion 38C and the pressure receiving portion 34A, thereby electrically connecting the inner conductor 30 to the other terminal.

[0090] [Removal of inner conductor 30]

[0091] When removing the inner conductor 30 from the dielectric 40 for maintenance or other reasons, first remove the upper cover 51A and lower cover 51B from the dielectric body 41. Next, insert the jig into the recess 47A and remove the inner conductor 30 from the cavity 45.

[0092] [Effects]

[0093] As described above, the connector-equipped cable 1 of this embodiment includes a cable 10 and a connector 20 connected to the end of the cable 10. The cable 10 includes a sheathed wire 11 and a braided wire 14 surrounding the outer periphery of the sheathed wire 11. The sheathed wire 11 includes a core wire 12 and an insulating sheath 13 surrounding the outer periphery of the core wire 12. The connector 20 includes: a conductive inner conductor 30, a spool 32 connected to the core wire 12, and a terminal connection portion 31 electrically connected to a tab T of a counterpart terminal; a dielectric body 40 made of synthetic resin having a cavity 45 for receiving the inner conductor 30; and a conductive outer conductor 70 surrounding the dielectric body 40. The dielectric body 40 includes a layer spacer 47 adjacent to the inner conductor 30, a portion of which is a thin-walled portion 47B with a thickness smaller than that of other portions.

[0094] According to the above structure, compared with the case where the interlayer spacer 47 does not have the thin-walled portion 47B, the amount of synthetic resin constituting the interlayer spacer 47 is less than that of other parts, and correspondingly, a void exists around the inner conductor 30. Since air has a lower dielectric constant than synthetic resin, the amount of synthetic resin around the inner conductor 30 can be reduced, and by configuring the void, the decrease in characteristic impedance can be suppressed. In addition, the void created by providing the thin-walled portion 47B can be used as space to insert a disassembly jig when removing the inner conductor 30 from the dielectric 40.

[0095] In addition, the terminal connection portion 31 has open ends 33A and 33B with openings, and a connecting cylinder portion 33 that receives the tab T of the other terminal inside. The thin-walled portion 47B is arranged adjacent to the portion of the connecting cylinder portion 33 that is different from the open ends 33A and 33B.

[0096] With this structure, the thin-walled portion 47B is arranged adjacent to the connecting cylinder portion 33, which has a larger metal content than other parts of the terminal connection portion 31, thereby effectively suppressing the decrease in characteristic impedance. In addition, by arranging the thin-walled portion 47B away from the open ends 33A and 33B in the connecting cylinder portion 33, where a decrease in insulation withstand voltage is likely to occur, the insulation withstand voltage can be ensured.

[0097] Additionally, the dielectric 40 has a column spacer 46 adjacent to the inner conductor 30, and the column spacer 46 has a through hole 46A.

[0098] According to this structure, compared with the case where the column spacer 46 does not have through holes 46A, the amount of synthetic resin constituting the column spacer 46 is less than that of other parts, and correspondingly, space exists around the inner conductor 30. Because the dielectric constant of air is lower than that of synthetic resin, the amount of synthetic resin around the inner conductor 30 can be reduced, and by configuring the space, the decrease in characteristic impedance can be suppressed.

[0099] In addition, the terminal connection portion 31 has open ends 33A and 33B with openings, and a connecting sleeve portion 33 that receives the other terminal inside. The through hole 46A is arranged adjacent to the portion of the connecting sleeve portion 33 that is different from the open ends 33A and 33B.

[0100] With this structure, the through hole 46A is positioned adjacent to the connecting sleeve portion 33, which has a larger metal content than other parts of the terminal connection portion 31, thereby effectively suppressing the decrease in characteristic impedance. Furthermore, by positioning the through hole 46A away from the openings 33A and 33B in the connecting sleeve portion 33, where a decrease in insulation withstand voltage is likely to occur, insulation withstand voltage can be ensured.

[0101] In addition, the terminal connection portion 31 has a contact portion 38C that contacts the tab portion T of the other terminal, and the through hole 46A is disposed adjacent to the portion of the terminal connection portion 31 in which the contact portion 38C is disposed.

[0102] The portion of the terminal connection 31 where the contact portion 38C is located tends to have a higher metal content compared to other portions. By arranging the through hole 46A adjacent to this portion, the decrease in characteristic impedance can be effectively suppressed.

[0103] Additionally, the dielectric 40 has a retaining protrusion 48, which protrudes into the cavity 45 and engages with the inner conductor 30, thereby retaining the inner conductor 30 inside the cavity 45. The retaining protrusion 48 and the through hole 46A are arranged in a direction orthogonal to the column spacer 46.

[0104] According to this structure, the through hole 46A can be used as a punch for forming the retaining protrusion 48 when the dielectric 40 is formed.

[0105] Additionally, the dielectric 40 includes: a dielectric body 41 having a layer spacer 47 and a column spacer 46; and a lower cover 51B and an upper cover 51A, assembled to the dielectric body 41 to cover the layer spacer 47 and the column spacer 46. With this structure, foreign objects can be prevented from entering the interior of the space created by the thin-walled portion 47B or the through hole 46A.

[0106] <Other Implementation Methods>

[0107] (1) In the above embodiment, the cable 10 has four covered wires 11, but the number of covered wires in the cable is arbitrary.

[0108] (2) In the above embodiment, in the dielectric 40, the cavities 45 of the 4 chambers are arranged in a manner that they are divided into two layers, each with two chambers. However, the total number of cavities, the number of layers, and the number of cavities constituting a layer of the dielectric are arbitrary.

[0109] (3) In the above embodiment, the layer partition 47 has a thin-walled portion 47B and the column partition 46 has a through hole 46A. However, the wall portion in the dielectric where the thin-walled portion and the through hole are provided is arbitrary. For example, the layer partition may have a through hole and the column partition may have a thin-walled portion. Alternatively, a wall portion may have both a thin-walled portion and a through hole.

[0110] (4) In the above embodiment, the thin-walled portion 47B is arranged adjacent to the wall surface of the first side wall 35A, 35B. However, the thin-walled portion may also be arranged adjacent to a wall of the peripheral wall constituting the connecting cylinder portion. For example, it may be adjacent to the bottom wall or the top wall.

[0111] (5) In the above embodiment, the through hole 46A is arranged adjacent to the wall surface of the bottom wall 34. However, the thin-walled portion may also be arranged adjacent to a certain wall of the peripheral wall constituting the connecting cylinder portion. For example, it may be adjacent to the first side wall or the top wall.

[0112] (6) In the above embodiment, the wire holding part 61 has a wire holding hole 62, which is a hole defined by the inner peripheral surfaces of each first wire holding groove 62A and each second wire holding groove 62B opposite to it. However, the structure of the wire holding part is not limited to the above embodiment. For example, the dielectric body may also have a wire holding groove that houses the end portion of the insulating covering part.

[0113] (7) In the above embodiment, the dielectric 40 includes: a dielectric body 41 having a layer spacer 47 and a column spacer 46; and a lower cover 51B and an upper cover 51A assembled to the dielectric body 41 to cover the layer spacer 47 and the column spacer 46, but the cover may also be a cover that covers one of the first wall portion and the second wall portion.

[0114] Explanation of reference numerals in the attached figures

[0115] 1: Cable with connector

[0116] 10: Cable

[0117] 11: Sheathed wires

[0118] 12: Core wire

[0119] 13: Insulation Covering Part

[0120] 14: Braided wire (shielding component)

[0121] 15: Sheath

[0122] 16: Sleeve

[0123] 20: Connector

[0124] 30: Inner conductor

[0125] 31: Terminal connection part

[0126] 32: Cable reel (electrical wire connector)

[0127] 33: Connecting cylinder section

[0128] 33A: First open end (open end)

[0129] 33B: Second open end (open end)

[0130] 34: Bottom wall

[0131] 34A: Pressure-bearing section

[0132] 35A, 35B: First sidewall

[0133] 36: Top Wall

[0134] 37A: First overlapping piece

[0135] 37B: Second overlapping piece

[0136] 38: Flexible contact piece

[0137] 38A: Base end

[0138] 38B: Free end

[0139] 38C: Contact section

[0140] 40: Dielectric

[0141] 41: Dielectric body

[0142] 42: Inner conductor holding part

[0143] 43: Anterior wall

[0144] 43A: Protrusion through hole

[0145] 44: Second lateral wall

[0146] 45: cavity

[0147] 45L 1: First cavity row

[0148] 45L2: Second cavity

[0149] 46: Column partition wall (second wall section)

[0150] 46A: Through hole

[0151] 47: Partial partition wall (first wall section)

[0152] 47A: concave part

[0153] 47B: Thin-walled section

[0154] 48: Maintain the protrusion

[0155] 49: Locking Protrusion

[0156] 51A: Top cover (lid)

[0157] 51B: Lower cover (cap)

[0158] 52: Cover body

[0159] 53: Locking plate

[0160] 53A: Keyhole

[0161] 61: Wire retaining part

[0162] 61A: First wire retaining section

[0163] 61B: Second wire holding part

[0164] 62: Wire retaining hole

[0165] 62A: First wire retaining slot

[0166] 62B: Second wire holding slot

[0167] 70: External conductor

[0168] 71: First outer conductor

[0169] 72: Lower wall

[0170] 73: Third lateral wall

[0171] 74: Locking plate

[0172] 74A: Keyhole

[0173] 75: Fixed Cylinder

[0174] 76: Slit

[0175] 77: Drumming section

[0176] 81: Second outer conductor

[0177] 82: Up the wall

[0178] 83: Fourth lateral wall

[0179] 83A: Receiving port

[0180] 84: Tongue slices

[0181] 90: Shell

[0182] 91: Locking Arm

[0183] T: Protrusion part (opposite terminal)

Claims

1. A connector connected to a terminal portion of an electric cable, the electric cable having a covered electric wire and a shield member surrounding an outer periphery of the covered electric wire, the covered electric wire having a core wire and an insulating covering portion covering an outer periphery of the core wire, the connector having: an electrically conductive inner conductor having a wire connecting portion connected to the core wire and a terminal connecting portion electrically connected to a counterpart terminal; a dielectric made of synthetic resin having a cavity accommodating the inner conductor; and an electrically conductive outer conductor surrounding the dielectric, the dielectric having a first wall portion adjacent to the inner conductor, a portion of the first wall portion being a thin wall portion having a thickness smaller than that of other portions, the dielectric having a second wall portion adjacent to the inner conductor, the second wall portion having a through hole, the second wall portion dividing an inner portion of the dielectric into a plurality of the cavities, the through hole communicating the cavities divided by the second wall portion with each other.

2. The connector according to claim 1, wherein the terminal connecting portion has an opening end having an opening portion and a connecting cylinder portion internally receiving the counterpart terminal, the thin wall portion is disposed adjacent to a portion of the connecting cylinder portion other than the opening end.

3. The connector according to claim 1, wherein the terminal connecting portion has an opening end having an opening portion and a connecting cylinder portion internally receiving the counterpart terminal, the through hole is disposed adjacent to a portion of the connecting cylinder portion other than the opening end.

4. The connector according to claim 1 or claim 3, wherein the terminal connecting portion has a contact portion contacting the counterpart terminal, the through hole is disposed adjacent to a portion of the inner conductor in which the contact portion is disposed.

5. The connector according to claim 1 or claim 3, wherein the dielectric has a holding protrusion holding the inner conductor inside the cavity by protruding into the inside of the cavity and being caught by the inner conductor, the holding protrusion and the through hole are arranged in a direction orthogonal to the second wall portion.

6. The connector according to claim 1 or claim 2, wherein the dielectric has a dielectric main body having the first wall portion and a cover assembled to the dielectric main body covering the first wall portion.

7. The connector according to claim 1 or claim 3, wherein the dielectric has a dielectric main body having the second wall portion and a cover assembled to the dielectric main body covering the second wall portion.

8. A cable with connector having an electric cable and a connector, the electric cable having a covered electric wire and a shield member surrounding an outer periphery of the covered electric wire, the covered electric wire having a core wire and an insulating covering portion covering an outer periphery of the core wire, the connector being connected to a terminal portion of the electric cable, the connector having: an electrically conductive inner conductor having a wire connecting portion connected to the core wire and a terminal connecting portion electrically connected to a counterpart terminal; a dielectric made of synthetic resin having a cavity accommodating the inner conductor; and an electrically conductive outer conductor surrounding the dielectric, the dielectric having a first wall portion adjacent to the inner conductor, a portion of the first wall portion being a thin wall portion having a thickness smaller than that of other portions, the dielectric having a second wall portion adjacent to the inner conductor, the second wall portion having a through hole, the second wall portion dividing an inner portion of the dielectric into a plurality of the cavities, the through hole communicating the cavities divided by the second wall portion with each other. The dielectric body has a first wall portion adjacent to the inner conductor, A portion of the first wall portion is a thin wall portion having a thickness smaller than that of other portions, The dielectric body has a second wall portion adjacent to the inner conductor, The second wall portion has a through hole, The second wall portion separates an inner portion of the dielectric body into a plurality of the cavities, The through hole communicates the cavities separated by the second wall portion with each other.

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