Terminal module

Abstract

To provide a terminal module which can suppress variation in impedance.SOLUTION: A terminal module 10 comprises: a shield wire 20 which has an end of a coated wire 21 exposed from a shield part 22; a terminal 30 connected to the end of the coated wire 21; a conductive impedance adjustment member 40 which covers an end region of the coated wire 21; and an insulative spacer member 50 which keeps a gap between the terminal 30 and the impedance adjustment member 40. The terminal module 10 may further comprise an insulative terminal housing member 60 which houses the terminal 30.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a terminal module. [Background technology]

[0002] The terminal module disclosed in Patent Document 1 includes a shielded electric wire, a terminal (inner conductor) connected to the covered electric wire exposed from the shielding portion at the end of the shielded electric wire, and an impedance adjusting member covering the covered electric wire exposed from the shielding portion. The impedance adjusting member has a function of suppressing a change in impedance between a portion of the covered electric wire that is covered with the shielding portion and a portion of the covered electric wire that is not covered with the shielding portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-106168 A Summary of the Invention [Problem to be solved by the invention]

[0004] By arranging the impedance adjustment member close to the terminal, the function of suppressing changes in impedance can be effectively exhibited. On the other hand, if the terminal and the impedance adjustment member are close enough to come into contact (short circuit), or if the distance between the terminal and the impedance adjustment member cannot be maintained constant, there is a concern that the impedance will be disturbed, making it difficult to suppress the impedance variation.

[0005] Therefore, an object of the present disclosure is to provide a terminal module capable of suppressing impedance variations. [Means for solving the problem]

[0006] The terminal module of the present disclosure is a terminal module comprising: a shielded electric wire having an end portion exposed from a shield portion; a terminal connected to the end portion of the coated electric wire; a conductive impedance adjusting member covering the end portion of the coated electric wire; and an insulating spacer member that maintains the distance between the terminal and the impedance adjusting member. Effect of the Invention

[0007] According to the present disclosure, it is possible to provide a terminal module capable of suppressing impedance variations. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a terminal module according to a first embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the terminal module according to the first embodiment. [Diagram 3] FIG. 3 is a side cross-sectional view of the terminal module according to the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the terminal module according to the first embodiment. [Diagram 5] FIG. 5 is a perspective view showing a state in which each spacer member individually covers an end region of each coated electric wire in the terminal module according to the first embodiment to maintain a distance between each terminal and the impedance adjustment member. [Figure 6] FIG. 6 is a perspective view of the impedance adjusting member in the terminal module according to the first embodiment. [Figure 7] FIG. 7 is a cross-sectional view of the terminal module according to the second embodiment. [Figure 8] FIG. 8 is a perspective view showing a state in which the spacer member collectively covers each of the end regions of each coated electric wire to maintain the distance between each terminal and the impedance adjustment member in the terminal module according to the second embodiment. [Figure 9] FIG. 9 is a side cross-sectional view of the terminal module according to the third embodiment. [Figure 10]FIG. 10 is a perspective view showing a state in which each spacer member individually covers an end region of each coated electric wire to maintain a distance between each terminal and the impedance adjustment member in the terminal module according to the third embodiment. [Figure 11] FIG. 11 is a perspective view showing a state in which the spacer member collectively covers each of the end regions of each coated electric wire in the terminal module according to the fourth embodiment, thereby maintaining the distance between each terminal and the impedance adjustment member. [Figure 12] FIG. 12 is a perspective view showing a state in which each spacer member individually covers an end region of each coated electric wire to maintain a distance between each terminal and the impedance adjustment member in the terminal module according to the fifth embodiment. [Figure 13] FIG. 13 is a perspective view showing a state in which each spacer member individually covers an end region of each coated electric wire to maintain a distance between each terminal and the impedance adjustment member in the terminal module according to the sixth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described. The terminal module of the present disclosure comprises: (1) A shielded electric wire having an end portion exposed from a shield portion, a terminal connected to the end portion of the shielded electric wire, a conductive impedance adjustment member covering the end region of the shielded electric wire, and an insulating spacer member that maintains a gap between the terminal and the impedance adjustment member. The above configuration (1) can prevent contact (short circuit) between the terminal and the impedance adjustment member by the insulating spacer member, and can maintain a constant distance between the terminal and the impedance adjustment member, thereby suppressing impedance variations.

[0010] (2) In the terminal module described above in (1), the spacer member is preferably a tubular member that covers an end region of the insulated wire between the terminal and the impedance adjustment member. The above configuration (2) can effectively suppress signal reflection at the end of the insulated electric wire by using the cylindrical spacer member.

[0011] (3) In the terminal module described above in (1) or (2), it is preferable that the spacer member is arranged in a state in which positional deviation in the longitudinal direction of the insulated electric wire is restricted by the terminal and the impedance adjustment member. In the above configuration (3), a spacer member can be sandwiched between the terminal and the impedance adjustment member to hold them.

[0012] (4) In the terminal module described in any one of (1) to (3) above, it is preferable that the terminal module further comprises an insulating terminal accommodating member that accommodates the terminals, and that the terminal accommodating member has a spacer accommodating portion that accommodates the spacer member while restricting the movement of the spacer member. The above configuration (4) can restrict rattling of the spacer member accommodated in the spacer accommodating portion of the terminal accommodating member, and therefore can more effectively suppress variations in impedance.

[0013] (5) In the terminal module described in (4) above, it is preferable that at least two of the terminals are accommodated in the terminal accommodating member, and the spacer member is arranged to individually cover each of the end regions of the insulated electric wires extending from the two terminals. In the above configuration (5), for example, when one of the insulated electric wires extending from two terminals is changed, it is only necessary to replace the spacer member corresponding to that one insulated electric wire, and there is no need to replace the spacer member corresponding to the other insulated electric wire.

[0014] (6) In the terminal module described in (4) above, it is preferable that at least two of the terminals are accommodated in the terminal accommodating member, and the spacer member is integrally formed so as to collectively cover each of the end regions of the insulated electric wires extending from the two terminals. The above configuration (6) can maintain a constant distance between the ends of the insulated wires extending from the two terminals by using the spacer member, thereby preventing the occurrence of crosstalk, etc., and improving impedance matching.

[0015] (7) In the terminal module described in any one of (4) to (6) above, it is preferable that the terminal has a barrel portion that holds an end of the insulated electric wire, and the spacer member has a fixing portion that is clamped and fixed radially of the insulated electric wire between the end of the insulated electric wire and the barrel portion. The above configuration (7) can maintain constant relative positions of the spacer member with respect to each of the insulated electric wire and the terminal, and therefore can more effectively suppress variations in impedance.

[0016] (8) In the terminal module described in (7) above, it is preferable that the insulated electric wire has a core wire and an insulating coating surrounding an outer periphery of the core wire, and the fixing portion is tubular and covers the core wire protruding from the insulating coating at the end of the insulated electric wire. In the above configuration (8), the barrel portion can hold the core wire via the fixing portion, and the fixing portion can perform the function of an insulating coating for the insulated electric wire.

[0017] [Details of the embodiment of the present disclosure] Specific examples of the present disclosure will be described below with reference to the drawings. Note that 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.

[0018] <Embodiment 1> The first embodiment of the present disclosure illustrates a terminal module 10 for communication in a vehicle such as an electric vehicle or a hybrid vehicle. As shown in Figs. 2 and 3, the terminal module 10 according to the first embodiment includes a shielded electric wire 20, a terminal 30, an impedance adjusting member 40, a spacer member 50, a terminal accommodating member 60, and an outer conductor 70. The terminal module 10 is accommodated in a housing (not shown). In the following description, the front-rear direction refers to the tip side of the shielded electric wire 20 in the length direction as the front. The up-down direction refers to the up-down direction in each of Figs. 1 to 6. These directions do not necessarily coincide with the reference directions when the terminal module 10 is mounted on a vehicle (not shown).

[0019] (Shielded wire) 2, the shielded electric wire 20 has two covered electric wires 21, a shield portion 22 collectively surrounding the outer periphery of each covered electric wire 21, and a sheath 23 surrounding the outer periphery of the shield portion 22. The shield portion 22 is, for example, a braided wire in which a plurality of metal wires are braided into a cylindrical shape. The shield portion 22 may be a metal foil such as a copper foil.

[0020] The two coated electric wires 21 are, for example, twisted pair wires. Each coated electric wire 21 has a core wire 24 which is a conductor and an insulating coating 25 which surrounds the outer periphery of the core wire 24. The core wire 24 is made of a metal material such as copper, a copper alloy, aluminum, an aluminum alloy, etc. The core wire 24 may be a single metal wire, or may be a twisted wire in which a plurality of metal wires are twisted together. The sheath 23 and the insulating coating 25 are made of a synthetic resin and have insulating properties and flexibility. At the end (front end, terminal portion) of the shielded electric wire 20, terminal processing such as stripping is performed. Specifically, the sheath 23 is removed from the end of the shielded electric wire 20 by terminal processing, and the ends of each coated electric wire 21 and the braided wire are exposed. Of the shield portion 22, the part extending from the front end of the sheath 23 and exposed is folded back to form an inverted portion 26 which covers the outer periphery of the sheath 23. An end of each coated electric wire 21 forms an exposed portion 27 exposed forward from the inverted portion 26 of the shield portion 22. The end of the exposed portion 27 has the insulating coating 25 removed by terminal processing such as stripping, exposing the core wire 24. The exposed portion 27 is covered with an impedance adjusting member 40 and constitutes an end region of the coated electric wire 21. The end region of the coated electric wire 21 is also covered with a spacer member 50. In the case of the present embodiment 1, the end region of the coated electric wire 21 is constituted by the insulating coating 25 of the exposed portion 27.

[0021] (Terminal) The terminal 30 is an inner conductor disposed inside the outer conductor 70. The terminal 30 is integrally formed by bending a conductive metal plate material or the like. As shown in Fig. 2, the terminal 30 is provided so as to be connectable to each of the two covered electric wires 21, and two terminals 30 are provided in one terminal module 10. The terminal 30 has a mating connection portion 31 at the front portion thereof to be connected to a mating terminal (mating inner conductor) not shown, and barrel portions 32, 33 at the rear portion thereof to be connected to the exposed portion 27 of the covered electric wire 21.

[0022] 3, the mating connection part 31 has therein a pair of upper and lower elastically deformable connection pieces 34. Each connection piece 34 is elastically deformable and is connected to a tab of a mating terminal (not shown) inserted into the mating connection part 31.

[0023] The barrel portion has a wire barrel portion 32 and an insulation barrel portion 33 disposed rearward of and alongside the wire barrel portion 32. The wire barrel portion 32 and the insulation barrel portion 33 each have an open barrel shape.

[0024] The wire barrel portion 32 is crimped so as to be wound around the core wire 24 exposed at the end of the exposed portion 27, and is electrically and mechanically connected to the core wire 24. The insulation barrel portion 33 is crimped so as to be wound around the insulating coating 25 at the end of the exposed portion 27, and is mechanically connected to the insulating coating 25.

[0025] (Impedance adjustment material) The impedance adjustment member 40 is integrally formed by bending a conductive metal plate, etc. As shown in Fig. 6, the impedance adjustment member 40 has a pair of left and right adjustment body parts 41 that cover the insulating coating 25 of the exposed part 27, which is the end region of each coated electric wire 21, and a connecting part 42 that connects the adjustment body parts 41 together. Each adjustment body portion 41 has a cylindrical shape with a C-shaped cross section, and is bent from the open state shown in Fig. 2 so as to fit along the outer circumferential surface of the insulating coating 25. The outer periphery of the insulating coating 25 is covered by the adjustment body portion 41. The connecting portion 42 is disposed between each adjustment body portion 41, and has an upwardly curved shape.

[0026] (Spacer material) The spacer member 50 is made of synthetic resin and has insulating properties. In the case of the present embodiment 1, as shown in FIG. 5, two spacer members 50 are provided so as to correspond to each of the two coated electric wires 21 individually. The spacer member 50 is tubular or annular and covers the end region of the coated electric wire 21 between the terminal 30 and the impedance adjustment member 40, for example, cylindrical or annular. The spacer member 50 has an electric wire insertion hole 51. The electric wire insertion hole 51 has an inner diameter corresponding to the outer diameter of the insulating coating 25 of the exposed portion 27. The spacer member 50 is fitted into the insulating coating 25 of the exposed portion 27. In the case of the present embodiment 1, the spacer member 50 has an electric wire insertion hole 51 with an inner diameter smaller than the outer diameter of the insulating coating 25, and is fitted into the insulating coating 25 in a state in which the insulating coating 25 is compressed in the radial direction (see FIG. 3).

[0027] The spacer member 50 has an outer diameter equal to or smaller than the outer diameter of the adjustment body 41, and is accommodated in a spacer accommodating portion 69 of the terminal accommodating member 60, described later, in a state in which its movement is restricted (see FIG. 4). The front and rear surfaces of the spacer member 50 are both formed along the radial direction of the spacer member 50. As shown in FIG. 3, when the spacer member 50 is accommodated in the spacer accommodating portion 69, the front surface of the spacer member 50 is arranged so as to be in contact with the rear end surface of the terminal 30, which is the rear end surface of the insulation barrel portion 33 in the case of the first embodiment. When the spacer member 50 is accommodated in the spacer accommodating portion 69, the rear surface of the spacer member 50 is arranged so as to be in contact with the front end surface of the impedance adjustment member 40. The length (thickness) of the spacer member 50 in the front-rear direction is sufficiently small, and is equal to the interval that is naturally formed between the impedance adjustment member 40 and the terminal 30 when the impedance adjustment member 40 is arranged close to the terminal 30 within an allowable range, for example. The spacer member 50 has a function of maintaining the distance between the terminal 30 and the impedance adjustment member 40 and keeping the terminal 30 and the impedance adjustment member 40 in an insulated state.

[0028] (Terminal housing material) The terminal accommodating member 60 is a dielectric material made of synthetic resin and has insulating properties. As shown in Fig. 2, the terminal accommodating member 60 has a lower member 61 and an upper member 62 attached to the lower member 61 from above. The lower member 61 has a flat plate-shaped lower main body portion 63 and a pair of frame-shaped lower locking portions 64 rising from both left and right end portions of the lower main body portion 63. The upper member 62 has a flat plate-shaped upper main body portion 65 and a pair of rib-shaped upper locking portions 66 (only one is shown in Fig. 2) protruding from both left and right end portions of the upper main body portion 65.

[0029] As shown in Fig. 4, the upper member 62 has a pair of side portions 67 protruding downward from both left and right end portions of the upper main body portion 65, and a partition portion 68 protruding downward from the left and right central portion of the upper main body portion 65. Each of the side portions 67 and the partition portion 68 is plate-shaped, with the plate surface facing the left and right direction. The rear portion of the upper member 62 has a pair of spacer housing portions 69 on both left and right sides of the partition portion 68. Each spacer member 50 is inserted and housed in each spacer housing portion 69 in a state where it is fitted into the insulating coating 25 of the exposed portion 27.

[0030] Each lower lock portion 64 engages each upper lock portion 66, thereby holding the lower member 61 and the upper member 62 in a state in which separation is restricted. Each spacer accommodating portion 69 is partitioned by the lower member 61 and the upper member 62 in a state in which the spacer member 50 is accommodated. As shown in Fig. 4, the spacer member 50 is sandwiched between the partition portion 68 and the side portion 67 to be restricted in its left-right movement, and is sandwiched between the upper main body portion 65 and the lower main body portion 63 to be restricted in its up-down movement. In other words, the spacer member 50 is restricted in its up-down and left-right movement in a state in which it is accommodated in the spacer accommodating portion 69.

[0031] (Outer conductor) The outer conductor 70 is formed by bending a conductive metal plate. As shown in Figs. 1 and 2, the outer conductor 70 has a main body member 71 and a cover member 72. The main body member 71 has a square tube portion 73 that covers the outer periphery of the terminal accommodating member 60 (the lower member 61 and the upper member 62 in a combined state) and an extension portion 74 that extends rearward from the tube portion 73. The tube portion 73 has a plurality of elastic contact portions 75 that can be connected to a mating outer conductor (not shown). As shown in Fig. 3, the extension portion 74 contacts the lower surface of the inverted portion 26 of the shield portion 22. As shown in Fig. 1, the cover member 72 is placed on the rear portion of the main body member 71 from above. The cover member 72 is also bent to cover the outer periphery of the inverted portion 26 and is closely attached to the outer surface of the extension portion 74 (see Fig. 3). The outer conductor 70 can form a part of the ground circuit by electrically and mechanically connecting the extension portion 74 and the cover member 72 to the shield portion 22. The terminal accommodating member 60 keeps each terminal 30 and the outer conductor 70 in an insulated state.

[0032] (Terminal module function) An example of a manufacturing method of the terminal module 10 will be described below. First, the exposed portion 27 of each coated electric wire 21 is inserted into the electric wire insertion hole 51 of each spacer member 50. In this state, the wire barrel portion 32 of each terminal 30 is crimped to the core wire 24 of the exposed portion 27 of each coated electric wire 21, and the insulation barrel portion 33 of each terminal 30 is crimped to the insulating coating 25 of the exposed portion 27 of each coated electric wire 21. Next, the front surface of each spacer member 50 is abutted against the rear end surface of the insulation barrel portion 33 of each terminal 30. Furthermore, the front end of each adjustment main body portion 41 of the impedance adjustment member 40 in the open state is abutted against the rear surface of the spacer member 50, and in this state, each adjustment main body portion 41 is bent.

[0033] As a result, each adjustment body 41 is crimped to the insulating coating 25 of the exposed portion 27 of each insulated electric wire 21, and the front end of each adjustment body 41 can contact the rear surface of each spacer member 50. Each spacer member 50 is sandwiched in the front-rear direction between the insulation barrel portion 33 of each terminal 30 and each adjustment body portion 41 of the impedance adjustment member 40, so that the spacer member 50 is arranged in a state in which its positional deviation in the front-rear direction is restricted with respect to the insulating coating 25 of the exposed portion 27 of each insulated electric wire 21 (see FIG. 3). A predetermined interval (a predetermined interval that is constant between products) corresponding to the length (thickness) of each spacer member 50 in the front-rear direction is maintained between the insulation barrel portion 33 of each terminal 30 and each adjustment body portion 41 of the impedance adjustment member 40.

[0034] Thereafter, the terminals 30 are accommodated in the spaces on both the left and right sides of the partition portion 68 in the upper member 62, and the spacer members 50 are accommodated in the spacer accommodating portions 69, so that the upper member 62 and the lower portion are held in a combined state. By accommodating the spacer members 50 in the spacer accommodating portions 69, the movement of the spacer members 50 is restricted, as described above (see FIG. 4).

[0035] As described above, the terminal module 10 according to the first embodiment includes an insulating spacer member 50 that maintains the distance between the terminal 30 and the impedance adjustment member 40. The spacer member 50 prevents contact (short circuit) between the terminal 30 and the impedance adjustment member 40 and maintains a constant distance between the terminal 30 and the impedance adjustment member 40, thereby suppressing impedance variations. The spacer member 50 is a cylindrical member that covers the end region (exposed portion 27) of the coated electric wire 21, and therefore can effectively suppress signal reflection at the end region of the coated electric wire 21.

[0036] Moreover, the spacer member 50 is sandwiched between the terminal 30 and the impedance adjustment member 40, and is held in a state in which positional deviation in the front-rear direction, which is the length direction of the coated electric wire 21, is restricted. Furthermore, the spacer member 50 is accommodated in the spacer accommodating portion 69 of the terminal accommodating member 60 in a state in which its own movement is restricted. Therefore, in addition to being able to determine the position of the spacer member 50 relative to each of the terminal 30 and the impedance adjustment member 40, it is also possible to restrict the spacer member 50 from rattling relative to the terminal accommodating member 60. Thus, the configuration of the first embodiment can stably maintain the distance between the terminal 30 and the impedance adjustment member 40 via the spacer member 50, and can more effectively suppress impedance variations.

[0037] Furthermore, in the case of the first embodiment, the spacer member 50 is provided so as to individually cover each of the covered electric wires 21 extending from the two terminals 30. Therefore, for example, when one of the two covered electric wires 21 is changed, it is only necessary to replace the spacer member 50 corresponding to one of the covered electric wires 21, and it is not necessary to replace the spacer member 50 corresponding to the other covered electric wire 21.

[0038] <Embodiment 2> 7 and 8, a terminal module 10A according to a second embodiment of the present disclosure differs from those of the first embodiment in a spacer member 50A and a spacer accommodating portion 69A that accommodates the spacer member 50A. The rest is the same as the first embodiment. In the following description of the second embodiment, structures that are the same as or equivalent to those of the first embodiment are given the same reference numerals, and duplicated descriptions will be omitted.

[0039] The spacer member 50A is an integrated type that collectively covers each of the end regions (exposed portions 27) of each coated electric wire 21. The spacer member 50A is plate-shaped and has a thickness in the front-rear direction. Specifically, the spacer member 50A has a track-shaped cross section, linear upper and lower surfaces extending along the left-right direction, and left and right side surfaces extending in a curved manner in the up-down direction. The thickness of the spacer member 50A in the front-rear direction is the same as that of the spacer member 50A in the first embodiment, and is large enough to maintain a predetermined distance between the terminal 30 and the impedance adjustment member 40.

[0040] The front and rear surfaces of the spacer member 50A are both formed along the radial direction of the spacer member 50A. The front surface of the spacer member 50A is arranged so as to be in contact with the rear end surface of the insulation barrel portion 33 of the terminal 30. The rear surface of the spacer member 50A is arranged so as to be in contact with the front end surface of the impedance adjustment member 40.

[0041] The spacer member 50A has a plurality of electric wire insertion holes 51A (two in the second embodiment) corresponding to the number of each of the coated electric wires 21. The electric wire insertion holes 51A are arranged side by side at intervals in the left-right direction in the spacer member 50A. The inner diameter of each electric wire insertion hole 51A is the same as the inner diameter of the spacer member 50A in the first embodiment.

[0042] 7, the rear portion of the terminal accommodating member 60 has one spacer accommodating portion 69A that does not have a portion corresponding to the partition portion 68 of the above-mentioned first embodiment. The spacer member 50A is accommodated in the spacer accommodating portion 69A, and is sandwiched between the left and right side portions 67 to restrict its movement in the left-right direction, and is sandwiched between the upper main body portion 65 and the lower main body portion 63 to restrict its movement in the up-down direction. In other words, the spacer member 50A is restricted from moving in the up-down direction and the left-right direction while being accommodated in the spacer accommodating portion 69A.

[0043] According to the second embodiment, as in the first embodiment, the insulating spacer member 50A maintains the distance between each terminal 30 and the impedance adjustment member 40, thereby suppressing the variation in impedance. Furthermore, in the case of the second embodiment, the spacer member 50A maintains a constant distance between each exposed portion 27 adjacent in the left-right direction, thereby preventing the occurrence of crosstalk between each exposed portion 27 adjacent in the left-right direction, and improving the impedance consistency.

[0044] <Embodiment 3> As shown in Figures 9 and 10, a terminal module 10B according to embodiment 3 of the present disclosure has a spacer member 50B that is different from that of embodiment 1. Also, in the end region (exposed portion 27) of each coated electric wire 21, the amount of core wire 24 protruding from the insulating coating 25 is longer than in embodiment 1. The rest is the same as embodiment 1. In the following description of embodiment 3, structures that are the same as or equivalent to embodiment 1 are given the same reference numerals, and duplicated descriptions will be omitted.

[0045] The spacer member 50B has a top hat shape (convex shape) in side view, and includes a spacer body 52B and a fixing portion 53B protruding forward from the spacer body 52B. The spacer body 52B has a tubular or annular shape, for example, a cylindrical or annular shape. The fixing portion 53B also has a tubular or annular shape, for example, a cylindrical or annular shape. The fixing portion 53B is slightly smaller than the spacer body 52B in front view, and has an outer circumferential surface that is concentric with the spacer body 52B.

[0046] The front and rear surfaces of the spacer body 52B are both formed along the radial direction of the spacer member 50B. The front surface of the spacer body 52B is connected at a right angle to the outer peripheral surface of the fixing portion 53B. The outer peripheral surface of the fixing portion 53B is formed along the front-rear direction. The front surface of the spacer body 52B is arranged so as to be able to come into contact with the rear end surface of the insulation barrel portion 33 of the terminal 30. The rear surface of the spacer body 52B is arranged so as to be able to come into contact with the front end surface of the impedance adjustment member 40. The outer peripheral surface of the fixing portion 53B is arranged so as to be able to come into contact with the insulation barrel portion 33 of the terminal 30 in a tight contact state.

[0047] The spacer member 50B has an electric wire insertion hole 51B therein, which penetrates in the front-rear direction from the spacer body portion 52B to the fixing portion 53B. The electric wire insertion hole 51B has an inner diameter corresponding to the outer diameter of the core wire 24 exposed at the end of the exposed portion 27.

[0048] In the third embodiment, the spacer member 50B is provided so as to cover the end region (exposed portion 27) of each coated electric wire 21 individually, as in the first embodiment. However, unlike the first embodiment, the core wire 24 exposed at the end of the exposed portion 27 is inserted into the electric wire insertion hole 51B of the spacer member 50B. The fixing portion 53B of the spacer member 50B is crimped by the insulation barrel portion 33 and is fixed (held) in a state of being compressed in the radial direction between the insulation barrel portion 33 and the core wire 24. The rear surface of the spacer main body portion 52B is arranged so as to be able to come into contact with the front end surface of the impedance adjustment member 40 and the front end surface of the insulating coating 25 (see FIG. 9).

[0049] According to the third embodiment, as in the first embodiment, the insulating spacer member 50B maintains the distance between the terminal 30 and the impedance adjustment member 40, so that the impedance variation can be suppressed. In addition, in the third embodiment, the spacer member 50B has a fixing portion 53B that is sandwiched and fixed between the end region (exposed portion 27) of the coated electric wire 21 and the insulation barrel portion 33 in the radial direction of the coated electric wire 21. Therefore, the configuration of the third embodiment can maintain the relative position of the spacer member 50B constant with respect to each of the coated electric wire 21 and the terminal 30, and can more effectively suppress the impedance variation. In particular, the fixing portion 53B has a cylindrical shape that covers the core wire 24 protruding from the insulating coating 25 at the end of the coated electric wire 21, and can function as the insulating coating 25 of the coated electric wire 21. As a result, the diameter dimension of the insulation barrel portion 33 in the crimped state (closed state) can be suppressed.

[0050] <Embodiment 4> 11, a terminal module 10C according to the fourth embodiment of the present disclosure includes an integrated spacer member 50C that collectively covers each end region (exposed portion 27) of each coated electric wire 21. The spacer member 50C has a plate-shaped spacer body portion 52C having a thickness in the front-rear direction. The spacer body portion 52C has a track-shaped cross section and has the same outer shape as the spacer member 50A of the second embodiment.

[0051] The spacer member 50C has two fixing portions 53C protruding forward from a spacer body portion 52C. The fixing portions 53C protrude side by side at intervals in the left-right direction from the spacer body portion 52C. Each fixing portion 53C has the same shape as the fixing portion 53B of the third embodiment.

[0052] The spacer member 50C has two wire insertion holes 51C therein, which penetrate in the front-rear direction from the spacer body 52C to each fixing portion 53C. Like the wire insertion holes 51B in the third embodiment, each wire insertion hole 51C has an inner diameter corresponding to the outer diameter of the core wire 24 exposed at the end of the exposed portion 27.

[0053] In the case of the fourth embodiment, the core wire 24 exposed at the end (exposed portion 27) of each coated electric wire 21 is inserted into each electric wire insertion hole 51C. The front end face of the insulating coating 25 at the end of each coated electric wire 21 is arranged so as to be able to come into contact with the rear surface of the spacer main body portion 52C. The front end face of the impedance adjustment member 40 is also arranged so as to be able to come into contact with the rear surface of the spacer main body portion 52C. Each fixing portion 53C is crimped by the insulation barrel portion 33 of each terminal 30, and is fixed (held) in a radially compressed state between the insulation barrel portion 33 and the core wire 24.

[0054] According to the fourth embodiment, as in the first embodiment, the insulating spacer member 50C maintains the interval between the terminal 30 and the impedance adjustment member 40, so that the impedance variation can be suppressed. In addition, in the case of the fourth embodiment, the spacer member 50A maintains the interval between the exposed portions 27 adjacent in the left-right direction constant, so that the occurrence of crosstalk between the exposed portions 27 adjacent in the left-right direction can be prevented, and the impedance consistency can be improved. Furthermore, the relative position of the spacer member 50C with respect to each of the coated electric wire 21 and the terminal 30 can be maintained constant by each fixing portion 53C, so that the impedance variation can be suppressed more effectively. In particular, each fixing portion 53C has a cylindrical shape that covers the core wire 24 protruding from the insulating coating 25 at the end of the coated electric wire 21, so that it can function as the insulating coating 25 of the coated electric wire 21.

[0055] <Embodiment 5> As shown in FIG. 12, a terminal module 10D according to embodiment 5 of the present disclosure includes a spacer member 50D that individually covers each end region (exposed portion 27) of each coated electric wire 21, and a terminal 30D that does not have a portion corresponding to the insulation barrel portion 33 of embodiment 1 above.

[0056] The barrel portion of the terminal 30D is composed only of the wire barrel portion 32. The terminal 30D is shorter in the front-rear direction than the terminal 30 of the above-mentioned embodiment 1 because it does not have a portion corresponding to the insulation barrel portion 33. The rear end surface of the wire barrel portion 32 becomes the rear end surface of the terminal 30D.

[0057] The spacer member 50D has a tubular or annular shape, for example, a cylindrical or annular shape, and has an outer shape similar to that of the spacer member 50 of the first embodiment.

[0058] The spacer member 50D has an electric wire insertion hole 51D. The inner diameter of the electric wire insertion hole 51D corresponds to the outer diameter of the core wire 24 exposed at the end of the exposed portion 27. The core wire 24 exposed at the exposed portion 27 is inserted into the electric wire insertion hole 51D. The front surface of the spacer member 50D is arranged so as to be in contact with the rear end surface of the wire barrel portion 32. The rear surface of the spacer member 50D is arranged so as to be in contact with the front end surface of the impedance adjustment member 40. In addition, the rear surface of the spacer member 50D is arranged so as to be in contact with the front end surface of the insulating coating 25 of the exposed portion 27.

[0059] According to the fifth embodiment, an insulating spacer member 50D is sandwiched and held between the wire barrel portion 32 of the terminal 30D and the impedance adjustment member 40 in a state in which movement is restricted. As in the first embodiment, the distance between the terminal 30D and the impedance adjustment member 40 is maintained, so that the impedance variation can be suppressed. In addition, in the fifth embodiment, the barrel portion of the terminal 30D is composed only of the wire barrel portion 32, so that the terminal module 10D can be shortened in the front-rear direction.

[0060] <Embodiment 6> As shown in FIG. 13, a terminal module 10E according to embodiment 6 of the present disclosure includes an integrated spacer member 50E that collectively covers each end region (exposed portion 27) of each coated electric wire 21, and a terminal 30E that does not have a portion corresponding to the insulation barrel portion 33 of embodiment 1 above.

[0061] The barrel portion of the terminal 30E is composed only of the wire barrel portion 32. The rear end surface of the wire barrel portion 32 becomes the rear end surface of the terminal 30E.

[0062] The spacer member 50E is plate-shaped and has a thickness in the front-rear direction. The spacer member 50E has a track-shaped cross section and has the same outer shape as the spacer member 50A of the second embodiment. The spacer member 50E has two electric wire insertion holes 51E. The electric wire insertion holes 51E are arranged side by side at intervals in the left-right direction in the spacer member 50E. The inner diameter of each electric wire insertion hole 51E corresponds to the outer diameter of the core wire 24 exposed at the end of each exposed portion 27. The core wire 24 exposed at the end of each exposed portion 27 is inserted into each electric wire insertion hole 51E.

[0063] The spacer member 50E is sandwiched and held between the wire barrel portion 32 of each terminal 30E and the impedance adjustment member 40 in a state where its movement is restricted. As in the above-mentioned embodiment 1, the insulating spacer member 50E maintains the interval between each terminal 30E and the impedance adjustment member 40, so that the variation in impedance can be suppressed. In addition, in the case of the embodiment 6, since the barrel portion of the terminal 30E is composed only of the wire barrel portion 32, the terminal module 10E can be shortened in the front-rear direction. Furthermore, since the spacer member 50E maintains a constant interval between the exposed portions 27 adjacent in the left-right direction, the occurrence of crosstalk between the exposed portions 27 adjacent in the left-right direction can be prevented, and the impedance consistency can be improved.

[0064] [Another embodiment of the present disclosure] The above-described embodiments 1 to 6 disclosed herein should be considered as illustrative in all respects and not restrictive. In the above-mentioned embodiments 1 to 6, the spacer member has a shape that covers the entire outer periphery of the end region of the insulated electric wire. In contrast, according to other embodiments, the spacer member may have a part that does not cover the outer periphery of the end region of the insulated electric wire, and may be formed, for example, in a C-shaped cross section. In the above-mentioned embodiments 3, 4, and 6, the spacer member has a cylindrical fixing portion that covers the outer periphery of the core wire exposed at the end of the insulated electric wire. In contrast, according to other embodiments, the spacer member may have a cylindrical fixing portion that covers the outer periphery of the insulating coating at the end of the insulated electric wire. In the above-mentioned embodiments 1-6, two terminals and two insulated electric wires are accommodated in one terminal accommodating member, whereas in other embodiments, one or three or more terminals and one or three or more insulated electric wires may be accommodated in one terminal accommodating member. [Explanation of symbols]

[0065] 10, 10A, 10B, 10C, 10D, 10E...Terminal module 20…Shielded wire 21…Coated wire 22…Shield section 23…Sheath 24…Core wire 25…Insulating coating 26…Inverted section 27...Exposed part 30, 30D, 30E…Terminals 31…Mating connection part 32...Wire barrel part (barrel part) 33…Insulation barrel part (barrel part) 34…Connecting piece 40...Impedance adjustment member 41…Adjustment body 42...Connection part 50, 50A, 50B, 50C, 50D, 50E...Spacer members 51, 51A, 51B, 51C, 51D, 51E... Electric wire insertion hole 52B, 52C...Spacer body 53B, 53C…Fixed part 60...Terminal receiving member 61...Lower member 62...Upper member 63…Lower body 64…Lower lock part 65…Upper body 66…Upper lock section 67…Side 68…Partition 69, 69A…Spacer housing 70…Outer conductor 71...Main body material 72…Cover member 73...Cylinder part 74...Extension part 75...Elastic contact part

Claims

1. a shielded electric wire having an end portion of the coated electric wire exposed from a shield portion; A terminal connected to an end of the coated electric wire; a conductive impedance adjustment member covering an end region of the coated electric wire; and an insulating spacer member that maintains a distance between the terminal and the impedance adjustment member.

2. The terminal module according to claim 1 , wherein the spacer member is a cylindrical member covering an end region of the coated electric wire between the terminal and the impedance adjustment member.

3. 2. The terminal module according to claim 1, wherein the spacer member is arranged in a state in which positional deviation in a longitudinal direction of the insulated wire is restricted by the terminal and the impedance adjustment member.

4. The terminal housing further includes an insulating terminal housing member for housing the terminal. The terminal module according to claim 1 , wherein the terminal accommodating member has a spacer accommodating portion that accommodates the spacer member while restricting movement of the spacer member.

5. At least two of the terminals are accommodated in the terminal accommodating member, The terminal module according to claim 4 , wherein the spacer members are provided so as to individually cover each of the end regions of the covered electric wires extending from the two terminals.

6. At least two of the terminals are accommodated in the terminal accommodating member, The terminal module according to claim 4 , wherein the spacer member is provided integrally so as to collectively cover each of the end regions of the insulated electric wires extending from the two terminals.

7. The terminal has a barrel portion for holding an end of the insulated electric wire, The terminal module according to claim 4 , wherein the spacer member has a fixing portion that is sandwiched and fixed radially between the end of the insulated electric wire and the barrel portion.

8. The coated electric wire has a core wire and an insulating coating surrounding an outer periphery of the core wire, The terminal module according to claim 7 , wherein the fixing portion has a tubular shape that covers the core wire protruding from the insulating coating at the end of the coated electric wire.

Images