Terminal unit and connector provided with same

Abstract

An accommodation part (41) of an external terminal (40) provided in a terminal unit (14) is provided with main body parts (41a, 41b) and a pair of lid parts (41c1). The main body parts (41a, 41b) have a shape that is open in an opening direction that is a direction perpendicular to an axial direction. The lid parts (41c1) allow a dielectric member (30) to be disposed inside the main body parts (41a, 41b) from the opening direction in an open state, and cover the dielectric member (30) disposed inside the main body parts (41a, 41b) from the opening direction in a closed state.

Description

Terminal unit and connector including same

[0001] The present disclosure relates to a terminal unit and a connector including the same.

[0002] Patent Documents 1 and 2 disclose a terminal unit including an internal terminal, a dielectric member that houses the internal terminal, and an external terminal that has a housing portion that houses the internal terminal and the dielectric member.

[0003] JP 2024-002869 A JP 2008-181810 A

[0004] An object of the present disclosure is to provide a terminal unit that is efficient to assemble.

[0005] The terminal unit of the first aspect is a terminal unit that is attached to a shielded cable having an inner conductor, an outer conductor that shields the inner conductor, and a sheath that covers the outer conductor, and when the direction in which the tip of the shielded cable faces is referred to as one axial side, the terminal unit comprises: an inner terminal that is electrically connected to the inner conductor, a dielectric member that houses the inner terminal, and an outer terminal that has a accommodating portion that houses the inner terminal and the dielectric member, and the accommodating portion comprises a main body portion that has a shape that opens in an opening direction that is a direction perpendicular to the axial direction, and a lid portion that, when open, allows the dielectric member to be placed inside the main body portion from the opening direction, and when closed, covers the dielectric member placed inside the main body portion from the opening direction.

[0006] In this aspect, the terminal unit is attached to a shielded cable having an inner conductor, an outer conductor that shields the inner conductor, and a sheath that covers the outer conductor. The terminal unit includes an inner terminal electrically connected to the inner conductor, a dielectric member that houses the inner terminal, and an outer terminal having a housing that houses the inner terminal and the dielectric member.

[0007] In this aspect, the housing includes a main body and a lid. The main body has a shape that opens in an opening direction that is perpendicular to the axial direction. When open, the lid allows a dielectric member to be placed inside the main body from the opening direction, and when closed, the lid covers the dielectric member placed inside the main body from the opening direction. Therefore, with the lid open, the dielectric member can be placed inside the main body from a direction perpendicular to the front-to-rear direction (the opening direction), and then the lid is closed to cover the dielectric member placed inside the main body from the opening direction. Therefore, for example, there is no need to insert the dielectric member into the housing from one axial side or the other axial side, which makes it easier to assemble the dielectric member into the housing.

[0008] In the embodiments described below, the terminal unit includes a first additional member and a second additional member. However, this aspect is not limited to this, and the terminal unit may not include either the first additional member or the second additional member. In the embodiments described below, the dielectric member includes a first component member and a second component member that are assembled in a direction perpendicular to the axial direction. However, this aspect is not limited to this. In the embodiments described below, the accommodating portion includes a main body portion and a pair of lid portions. However, the accommodating portion of this aspect is not limited to this, and may include only one lid portion instead of a pair of lid portions.

[0009] In a second aspect of the terminal unit, in the first aspect, the cover portion includes an engaged portion that engages with a member to be accommodated in the accommodation portion when the cover portion is closed.

[0010] In this aspect, the lid includes an engaging portion that is engaged with the held member housed in the housing when the lid is closed, and thus can prevent the held member and the lid from separating when springback occurs.

[0011] In the embodiment described later, the held member is a dielectric member, but it may be the first connecting portion of the first addition member. In the embodiment described later, the first connecting portion of the first addition member contacts the lid in the closed state. However, this aspect is not limited to this.

[0012] A terminal unit according to a third aspect is the terminal unit of the first or second aspect, wherein the terminal unit comprises a conductive first additional member formed separately from the external terminal, the first additional member having a first connecting portion connected to the accommodating portion, and the first connecting portion of the first additional member being accommodated in the accommodating portion.

[0013] In this aspect, the terminal unit includes a conductive first addition member formed separately from the external terminal. The first addition member has a first connection portion that connects to the accommodation portion. The first connection portion of the first addition member is accommodated in the accommodation portion. Therefore, impedance can be adjusted by the first connection portion of the first addition member. Furthermore, with the lid portion open, the first connection portion of the first addition member can be placed inside the main body portion from a direction perpendicular to the front-to-rear direction (opening direction), and then the lid portion can be closed to accommodate the first connection portion of the first addition member in the accommodation portion. Therefore, for example, since there is no need to insert the first addition member into the accommodation portion from the other axial side, the first addition member can be easily placed in the accommodation portion.

[0014] A fourth aspect of the present invention provides the terminal unit of the third aspect, wherein the first connection portion contacts the cover portion in a closed state.

[0015] In this aspect, the first connection portion of the first addition member comes into contact with the lid portion in the closed state, and therefore the lid portion can be used to electrically connect the storage portion and the first addition member.

[0016] A terminal unit according to a fifth aspect is the terminal unit of the third or fourth aspect, wherein the first addition member has a second connection portion that is connected to the outer conductor.

[0017] In this aspect, the first addition member has a second connection portion that connects to the external conductor, and therefore the first addition member can electrically connect the accommodating portion of the external terminal and the external conductor.

[0018] A terminal unit according to a sixth aspect is the terminal unit of the fifth aspect, wherein the second connection portion of the first addition member contacts an exposed portion of the outer conductor that is a portion exposed from the sheath.

[0019] In this embodiment, the second connection portion of the first addition member contacts the exposed portion of the outer conductor that is exposed from the sheath, and therefore the first addition member is not inserted between the sheath and the outer conductor (see the sleeve in Patent Document 1), resulting in good assembly efficiency.

[0020] The terminal unit according to the seventh aspect is any of the third to sixth aspects, wherein the terminal unit comprises a conductive second additional member formed separately from the external terminal, the second additional member having a first connecting portion connected to the accommodating portion, and the first connecting portion of the second additional member being accommodated in the accommodating portion.

[0021] In this aspect, the terminal unit includes a conductive second additional member formed separately from the external terminal. The second additional member has a first connection portion that connects to the housing portion. The first connection portion of the second additional member is housed in the housing portion. Therefore, impedance can be adjusted by the first connection portion of the second additional member. Furthermore, with the lid portion open, the first connection portion of the second additional member can be placed inside the main body portion from a direction perpendicular to the front-to-rear direction (opening direction), and then the lid portion can be closed to house the first connection portion of the second additional member in the housing portion. Therefore, for example, since there is no need to insert the second additional member into the housing portion from the other axial side, the additional member can be easily placed in the housing portion.

[0022] The terminal unit according to an eighth aspect is the terminal unit of the seventh aspect, wherein the first connection portion of the second addition member contacts the bottom plate portion of the main body portion.

[0023] In this aspect, the first connection portion of the second addition member comes into contact with the bottom plate portion of the main body portion, and therefore the bottom plate portion of the main body portion can be used to electrically connect the accommodation portion and the second addition member.

[0024] The terminal unit of the ninth aspect is any one of the first to eighth aspects, in which the dielectric member comprises a first component member assembled to the internal terminal from one side in an assembly direction that is perpendicular to the axial direction, and a second component member assembled to the internal terminal from the other side in the assembly direction.

[0025] In this aspect, the dielectric member includes a first component member that is assembled to the internal terminal from one side in an assembly direction that is perpendicular to the axial direction, and a second component member that is assembled to the internal terminal from the other side in the assembly direction. Therefore, the internal terminal can be assembled to the dielectric member in a direction perpendicular to the axial direction, making the internal terminal less likely to buckle and facilitating assembly of the terminal unit.

[0026] In the embodiment described below, the first component member is integrated with the first additional member. However, the first component member of this embodiment is not limited to this. In other words, when assembling the terminal unit, the first component member and the first additional member may be handled separately. The same applies to the relationship between the second component member and the second additional member. Furthermore, the terminal unit of this embodiment may not necessarily include the first additional member or the second additional member.

[0027] A terminal unit according to a tenth aspect is the terminal unit of the ninth aspect, wherein the first component member and the second component member have the same shape.

[0028] In this aspect, the first and second components have the same shape, which allows the first and second components to share the same parts.

[0029] The terminal unit of the eleventh aspect is, in any of the third to eighth aspects, the dielectric member comprises a first component member assembled to the internal terminal from one side in an assembly direction that is perpendicular to the axial direction, and a second component member assembled to the internal terminal from the other side in the assembly direction, and the first additional member is integrated with the first component member.

[0030] In this aspect, the first addition member is integrated with the first component member, which allows the first addition member and the first component member to be handled as a single unit, thereby facilitating the assembly of the terminal unit.

[0031] In the embodiment described below, the first additional member is integrated with the first component member by being integrally molded (insert molded) with the first component member. However, this aspect is not limited to this. The first additional member may be integrated with the first component member by being press-fitted into the first component member, or may be integrated with the first component member by being adhered to the first component member with an adhesive. The same applies to the relationship between the second component member and the second additional member. Also, the terminal unit of this aspect does not necessarily have to include the second additional member.

[0032] 1 is a perspective view of a connector according to an embodiment; 2 is an exploded perspective view of a connector according to an embodiment; 3 is a perspective view of a coaxial terminal unit during assembly; 4 is a perspective view of a coaxial terminal unit during assembly; 5 is a perspective view of a coaxial terminal unit; 6 is a cross-sectional view of a coaxial terminal unit; 7 is a perspective view of an internal terminal of the coaxial terminal unit; 8 is a perspective view of a pair of additional members of the coaxial terminal unit; 9 is a cross-sectional view of a shielded cable to which the coaxial terminal unit is attached; 10 is an exploded perspective view of a differential terminal unit; 11 is a cross-sectional view of a differential terminal unit; 12 is a perspective view of an internal terminal of the differential terminal unit; 13 is a perspective view of a pair of additional members of the differential terminal unit; 14 is a cross-sectional view of a shielded cable to which the differential terminal unit is attached;

[0033] Hereinafter, preferred embodiments of a terminal unit and a connector including the same according to the present disclosure will be described.

[0034] (Connector 10) FIG. 1 is a perspective view of the connector 10, and FIG. 2 is an exploded perspective view of the connector 10. As shown in FIG.

[0035] In each figure, arrow X indicates the front direction of the connector, arrow Y indicates one side (left side) in the width direction of the connector, and arrow Z indicates the upper direction of the connector.

[0036] As shown in FIGS. 1 and 2, the connector 10 includes a housing 12 and a plurality of terminal units 14A, 14B housed in the housing 12.

[0037] The terminal units 14A, 14B are composed of a plurality of first terminal units 14A (coaxial terminal units) and a plurality of second terminal units 14B (differential terminal units). Hereinafter, when no distinction is made, they will be simply referred to as terminal units 14.

[0038] As shown in Figure 2, the housing 12 has unit accommodating sections 12a that accommodate the terminal units 14. The unit accommodating sections 12a are configured so that the terminal units 14 can be inserted from the rear of the connector. A plurality of unit accommodating sections 12a are provided in two rows, one above the other. Some of the unit accommodating sections 12a accommodate first terminal units 14A, and others accommodate second terminal units 14B, and these sections have different structures. The types of terminal units 14 accommodated in the region on one side of the housing 12 in the connector width direction are different from those accommodated in the region on the other side of the connector width direction.

[0039] The housing 12 has a locking operation portion 12b. The locking operation portion 12b is a portion for maintaining the connection between the connector 10 and a mating connector (a connection object, not shown). The connection between the connector 10 and the mating connector can be released by pressing down the locking operation portion 12b and displacing the claw portion. The locking operation portion 12b is formed on the upper part of the housing 12.

[0040] The connector 10 has a locking portion fixing member 16. When the locking portion fixing member 16 is attached to the housing 12, the deflection of the locking operation portion 12b is prevented. As a result, the connector 10 is prevented from being disconnected from the mating connector.

[0041] The connector 10 includes a retaining member 18. When the retaining member 18 is attached, the terminal unit 14 is prevented from slipping out of the unit accommodating portion 12a toward the rear of the connector. The retaining member 18 is inserted into the housing 12 from the outside in the connector width direction.

[0042] (First Terminal Unit 14A) Next, the first terminal unit 14A will be described.

[0043] In each figure, arrow X indicates the front direction of the unit (one axial direction), arrow Y indicates the upward direction of the unit, and arrow Z indicates one widthwise direction. That is, the first terminal unit 14A is disposed with its widthwise direction facing the vertical direction of the connector. Hereinafter, when the terms "front-rear direction," "up-down direction," and "widthwise direction" are used simply, they refer to the front-rear direction, up-down direction, and widthwise direction of the terminal unit 14.

[0044] As shown in FIG. 3, the first terminal unit 14A is attached to a first shielded cable 90A having one inner conductor 91a.

[0045] FIG. 9 is a cross-sectional view of the first shielded cable 90A.

[0046] The first shielded cable 90A includes, in order from the center, an insulated wire 91, an outer conductor 92, and a sheath 93.

[0047] The insulated wire 91 includes, in order from the center, an inner conductor 91 a and an insulator 91 b. The inner conductor 91 a is, for example, a twisted wire made up of a plurality of single wires.

[0048] The outer conductor 92 includes, in order from the center, a first shielding portion 92 a and a second shielding portion 92 b. The first shielding portion 92 a is a conductive film, such as an aluminum tape. The second shielding portion 92 b is a braided wire.

[0049] The first terminal unit 14A includes an internal terminal 20A, a dielectric member 30 that houses the internal terminal 20A, an external terminal 40 that is electrically connected to the external conductor 92, a conductive first additional member 50A, and a conductive second additional member 50B.

[0050] The dielectric member 30 is composed of a first component member 31A that is assembled to the internal terminal 20A from above, and a second component member 31B that is assembled to the internal terminal 20A from below. The first component member 31A is integrally molded with a first additional member 50A, and the second component member 31B is integrally molded with a second additional member 50B.

[0051] The first terminal unit 14A is assembled as follows: (1) The crimping portion 24 of the internal terminal 20A is crimped to the internal conductor 91a of the first shielded cable 90A, which has been subjected to termination processing (see FIG. 3). (2) The first component member 31A, which is integrated with the first additional member 50A, is assembled to the first shielded cable 90A and the internal terminal 20A from above, and the second component member 31B, which is integrated with the second additional member 50B, is assembled from below (see FIG. 4). (3) The internal terminal 20A, the dielectric member 30, etc. are placed from above on the external terminal 40, which is in an open state. (4) The accommodating portion 41, the first tightening portion 43, and the second tightening portion 45 of the external terminal 40 are deformed to close the external terminal 40 (see FIG. 5).

[0052] The first shielded cable 90A after termination is configured as follows. As shown in FIG. 6 , the second shield portion 92b is folded back so that its tip end portion covers a cylindrical reinforcing member 95. Hereinafter, this folded back portion will be referred to as a folded back portion 92b1. The reinforcing member 95 is disposed radially outward of the unfolded portion of the second shield portion 92b and radially inward of the folded back portion 92b1 of the second shield portion 92b. The front end of the sheath 93 faces the rear end of the reinforcing member 95 in the front-rear direction. The reinforcing member 95 is made of, for example, metal. The first shield portion 92a is not folded back, and a portion of the first shield portion 92a near its tip end is exposed from the sheath 93 and the second shield portion 92b. Hereinafter, this exposed portion will be referred to as an exposed portion 92a1. The front end of the first shield portion 92a and the front end of the insulator 91b are aligned in the front-rear direction.

[0053] (Internal Terminal 20A) FIG. 7 shows an enlarged view of the internal terminal 20A.

[0054] The inner terminal 20A is a member that connects to the inner conductor 91 a of the first shielded cable 90 A. The inner terminal 20A is manufactured by bending a metal plate into a cylindrical shape, for example. The inner terminal 20A has a structure that is approximately symmetrical in the width direction (Z direction).

[0055] In the following description of the internal terminal 20A, the radial direction refers to a direction perpendicular to an imaginary central axis AX that passes through the center of the internal terminal 20A and is parallel to the front-to-rear direction of the unit, and the radially outward direction refers to a radial direction away from the central axis AX.

[0056] The internal terminal 20A includes a contact portion 21, a cylindrical portion 22, a connecting portion 23, a crimping portion 24, and an impedance adjusting portion 25, in this order from the front side to the rear side.

[0057] The contact portion 21 is a portion that comes into contact with a signal terminal (not shown) of a mating connector. The contact portion 21 has a pair of contact pieces 21 a. The pair of contact pieces 21 a contact the signal terminal of the mating connector so as to sandwich the connection object (the signal terminal) from the width direction.

[0058] The cylindrical portion 22 is a portion formed by bending a plate material into a cylindrical shape. The cross section of the cylindrical portion 22 perpendicular to the front-to-rear direction is circular. The ends of the plate material are butted together at a position on the upper side of the unit (+Y direction side) of the cylindrical portion 22. A locking hole 22a is formed in the cylindrical portion 22. By inserting a locking protrusion 34 (see FIG. 6) of the dielectric member 30 into the locking hole 22a, relative movement of the internal terminal 20A in the front-to-rear direction with respect to the dielectric member 30 is restricted. The locking hole 22a is formed in two places, one on the upper surface side (+Y direction side) and one on the lower surface side (-Y direction side, see FIG. 6) of the cylindrical portion 22.

[0059] The connecting portion 23 is a portion that connects the tubular portion 22 and the crimping portion 24. Specifically, the connecting portion 23 connects the lower portion of the tubular portion 22 and the lower portion of the crimping portion 24 in the front-to-rear direction. The cross-sectional shape of the connecting portion 23 (the cross-sectional shape perpendicular to the front-to-rear direction) is a substantially arc shape.

[0060] The crimping portion 24 is a portion that is crimped to the inner conductor 91a of the first shielded cable 90A.

[0061] The crimping portion 24 has a bottom plate portion 24a and a pair of crimping pieces 24b. The crimping portion 24 is crimped to the internal conductor 91a, thereby electrically connecting the internal conductor 91a and the internal terminal 20A. The crimping portion 24 has a substantially uniform cross-sectional structure along the front-rear direction. The width dimension of the crimping portion 24 is greater than the width dimension of the tubular portion 22.

[0062] The impedance adjusting portion 25 protrudes rearward from the bottom plate portion 24a of the crimping portion 24. The impedance adjusting portion 25 is composed only of an axially extending portion 25a. The axially extending portion 25a is located at the same position in the up-down direction as the bottom plate portion 41a of the crimping portion 24. The axially extending portion 25a is a carrier cutting portion. The carrier cutting portion is the portion that is cut last and separated from the carrier when manufacturing an internal terminal by progressive processing.

[0063] (Dielectric Member 30, First Additional Member 50A, Second Additional Member 50B) A space for accommodating the internal terminal 20A is formed inside the dielectric member 30, which is composed of the first component member 31A and the second component member 31B.

[0064] The first component 31A and the second component 31B share common components. In other words, the first component 31A and the second component 31B are made of the same material (dielectric) and have the same structure. The only difference between the first component 31A and the second component 31B is their position and orientation. Hereinafter, when no particular distinction is made, they will simply be referred to as component 31.

[0065] The first addition member 50A and the second addition member 50B share common components. In other words, the first addition member 50A and the second addition member 50B are formed from the same material (conductive material) and have the same structure. The first addition member 50A and the second addition member 50B are the same as the first component member 31A and the second component member 31B except for their positions and orientations. Hereinafter, when no particular distinction is made, they will simply be referred to as additional members 50.

[0066] The first component member 31A and the second component member 31B face each other in the vertical direction across the center of the first terminal unit 14A, and the first additional member 50A and the second additional member 50B face each other in the vertical direction across the center of the first terminal unit 14A.

[0067] Hereinafter, the vertical direction may be referred to as the facing direction. Furthermore, the vertical direction toward the center of the first terminal unit 14A may be referred to as the inner facing direction, and the vertical direction away from the center of the first terminal unit 14A may be referred to as the outer facing direction.

[0068] The component 31 is resin-molded by insert molding using the additional member 50 as an insert component. As a result, the component 31 is integrated with the additional member 50. Therefore, when assembling the first terminal unit 14A, the component 31 and the additional member 50 can be handled as a single unit.

[0069] The component 31 has a recess 32 and a protrusion 33. The recess 32 and the protrusion 33 fit together, thereby fixing the first component 31A and the second component 31B together.

[0070] The component 31 has locking projections 34. The locking projections 34 protrude inward in the opposing direction and are inserted into upper and lower locking holes 22a (see FIG. 6) of the internal terminal 20A.

[0071] As shown in FIG. 8 , the additional member 50 includes a first connecting portion 51 , a second connecting portion 52 , and a linking portion 53 .

[0072] 6 , the first connecting portion 51 connects to the accommodation portion 41 of the external terminal 40. Specifically, the outer surface of the first connecting portion 51 of the first addition member 50A in the opposing direction contacts the pair of lid portions 41c1 of the accommodation portion 41. The outer surface of the first connecting portion 51 of the second addition member 50B in the opposing direction contacts the bottom plate portion 41a of the accommodation portion 41.

[0073] The first connecting portion 51 has a flat plate shape with its thickness oriented in the opposing direction. The radially outer surface of the first connecting portion 51 is exposed and not covered by the resin of the component 31, while the other surface of the first connecting portion 51 is covered by the resin of the component 31.

[0074] The first connecting portion 51 has a pair of through holes 51a. The through holes 51a are holes through which the locked portions 47 of the cover portion 41c1, which will be described later, pass.

[0075] The second connection portion 52 is connected to the outer conductor 92. Specifically, the second connection portion 52 comes into contact with an exposed portion 92a1, which is an exposed portion of the first shield portion 92a of the outer conductor 92, from the outside in the opposing direction.

[0076] The second connecting portion 52 has a cross-sectional shape of an arc that is convex outward in the opposing direction. The second connecting portion 52 has a front portion 52a that is narrower and a rear portion 52b that is wider.

[0077] The connecting portion 53 connects the rear end of the first connecting portion 51 and the front end of the second connecting portion 52. The rear end of the first connecting portion 51 is located outward of the front end of the second connecting portion 52 in the opposing direction.

[0078] The connecting portion 53 has a vertical portion 53a extending generally parallel to the opposing direction, thereby reducing the distance in the front-to-rear direction between the rear end of the first connecting portion 51 and the front end of the second connecting portion 52. In the front-to-rear direction, the position of the connecting portion 53 generally coincides with the position of the rear end of the crimping portion 24 of the internal terminal 20A.

[0079] As a result, the first connecting portion 51, the second connecting portion 52, and the linking portion 53 of the additional member 50 form a conductive path between the accommodation portion 41 and the first shield portion 92a of the outer conductor 92. Hereinafter, the first connecting portion 51, the second connecting portion 52, and the linking portion 53 may be referred to as conductive path forming portions 51, 52, 53.

[0080] The first addition member 50A includes a pair of widthwise lateral extension portions 54. The pair of lateral extension portions 54 have the same structure.

[0081] The lateral extension portion 54 extends outward in the width direction from the rear end portion of the first connection portion 51 .

[0082] The lateral extending portion 54 has a first extending portion 54a and a second extending portion 54b. The first extending portion 54a extends outward in the width direction from the first connecting portion 51 and then extends inward in the opposing direction. The second extending portion 54b extends rearward from the first extending portion 54a and then extends inward in the width direction.

[0083] The outer surface in the width direction of the first extending portion 54 a is exposed and not covered by the resin of the component 31 , but the other surface of the first extending portion 54 a is covered by the resin of the component 31 .

[0084] Most of both surfaces of the second extending portion 54b in the plate thickness direction are covered with the resin of the component 31. As a result, the second extending portion 54b functions to increase the holding force of the component 31 to the additional member 50. The second extending portion 54b also functions to narrow the opening on the rear side of the accommodation portion 41.

[0085] The additional member 50 also includes a carrier disconnecting portion 59 that protrudes rearward from the rear end of the second connecting portion 52 .

[0086] (External Terminal 40) The external terminal 40 is manufactured by bending a metal plate material or the like.

[0087] The external terminal 40 includes a housing portion 41 , a first connecting portion 42 , a first fastening portion 43 , a second connecting portion 44 , and a second fastening portion 45 .

[0088] The storage section 41 has main body sections 41a, 41b that are open upward (opening direction). Specifically, the main body sections 41a, 41b have a generally U-shaped cross section that is open upward (opening direction). The main body sections 41a, 41b are composed of a bottom plate section 41a whose thickness direction is oriented in the vertical direction and a pair of side plate sections 41b whose thickness direction is oriented in the width direction.

[0089] The storage section 41 also has a pair of lids 41c1. The lids 41c1 extend from the upper ends of the pair of side plate sections 41b. The lids 41c1 form a top plate section 41c whose thickness is oriented in the up-down direction. The top plate section 41c closes the space between the upper ends of the pair of side plate sections 41b. The front end of the top plate section 41c is located rearward of the front ends of the main body sections 41a and 41b.

[0090] 4 shows a state in which the pair of lid portions 41c1 are open. When the pair of lid portions 41c1 are open, no curved portion is formed between the lid portion 41c1 and the side plate portion 41b. When the lid portion 41c1 is open, the dielectric member 30 is allowed to be placed inside the main body portions 41a, 41b from above (the opening direction). A notch 46 extending in the front-rear direction is formed on the inner surface in the width direction of the portion between the lid portion 41c1 and the side plate portion 41b.

[0091] The first connecting portion 42 connects the lower portion of the storage portion 41 and the lower portion of the first tightening portion 43. The first connecting portion 42 has a generally U-shaped or C-shaped cross section that is open upward from its front end to its rear end. The width dimension of the lower portion of the first tightening portion 43 is smaller than the width dimension of the lower portion of the storage portion 41. In addition, the lower end of the first tightening portion 43 is located above the lower end of the storage portion 41.

[0092] The first tightening portion 43 tightens the exposed portion 92a1 of the first shield portion 92a, the second connecting portion 52 of the first addition member 50A, and the second connecting portion 52 of the second addition member 50B. The first tightening portion 43 has a substantially circular cross-sectional shape in the closed state.

[0093] The second connecting portion 44 connects the lower portion of the first tightening portion 43 and the lower portion of the second tightening portion 45. The second connecting portion 44 has a generally C-shaped cross section that is open upward from its front end to its rear end. The width dimension of the lower portion of the second tightening portion 45 is greater than the width dimension of the lower portion of the first tightening portion 43. The lower end of the second tightening portion 45 is located lower than the lower end of the first tightening portion 43.

[0094] The second tightening portion 45 tightens the portion of the first shielded cable 90A where the cylindrical reinforcing member 95 is provided. Specifically, the second tightening portion 45 tightens the cylindrical reinforcing member 95 and a folded portion 92b1 of the second shield portion 92b that is folded back to cover the reinforcing member 95. In the closed state, the second tightening portion 45 has a substantially circular cross-sectional shape that is larger than the first tightening portion 43.

[0095] Each of the pair of cover portions 41c1 has a locked portion 47. The locked portion 47 is a portion that is locked to the dielectric member 30 housed in the housing portion 41. Specifically, the locked portion 47 is press-fitted into a locking recess 35 of the dielectric member 30, thereby being locked to the dielectric member 30. The locking recess 35 is opened upward by a through-hole 51a of the first connecting portion 51 of the first addition member 50A.

[0096] The pair of side plate portions 41b of the accommodation portion 41 include guide protrusions 41b1 that protrude inward in the width direction. The guide protrusions 41b1 fit into the guide recesses 36 of the dielectric member 30. This positions the dielectric member 30 relative to the accommodation portion 41.

[0097] The guide protrusions 41b1 and the locked portions 47 are positioned in the same front-rear direction, so that the locked portions 47 pass through the guide recesses 36 of the dielectric member 30 when the dielectric member 30 is disposed inside the main body portions 41a and 41b.

[0098] The top plate portion 41c of the accommodation portion 41 is configured to come into contact with the first connecting portion 51 of the first addition member 50A. Specifically, the inner ends in the width direction of the pair of lid portions 41c1 are configured to come into contact with the first connecting portion 51 of the first addition member 50A. The curved portion 41d between the side plate portion 41b and the lid portion 41c1 is bent at an angle of 90 degrees or more.

[0099] The bottom plate portion 41a of the accommodation portion 41 contacts the first connection portion 51 of the second addition member 50B. Specifically, the bottom plate portion 41a has a pair of protruding portions 41a1 that contact the first addition member 50A. Note that one of the pair of protruding portions 41a1 is hidden in Fig. 4. The pair of protruding portions 41a1 are aligned in the width direction and each extend in the front-rear direction.

[0100] The first connecting portion 42 and the first tightening portion 43 of the external terminal 40 form a conductive path between the accommodating portion 41 and the first shield portion 92a of the external conductor 92. Furthermore, the first connecting portion 42, the first tightening portion 43, the second connecting portion 44, and the second tightening portion 45 of the external terminal 40 form a conductive path between the accommodating portion 41 and the second shield portion 92b of the external conductor 92. The first connecting portion 42 and the first tightening portion 43 may be referred to as conductive path-forming portions 42, 43, and the first connecting portion 42, the first tightening portion 43, the second connecting portion 44, and the second tightening portion 45 may be referred to as conductive path-forming portions 42, 43, 44, 45.

[0101] 10 to 15, the second terminal unit 14B will be described. Note that components similar to those in the first terminal unit 14A will be denoted by the same reference numerals and descriptions thereof will be omitted where appropriate, and only differences from the first terminal unit 14A will be described.

[0102] The second terminal unit 14B is disposed with its width direction facing the vertical direction of the connector, similar to the first terminal unit 14A.

[0103] The second terminal unit 14B is attached to a second shielded cable 90B (see FIG. 10) having two inner conductors 91a.

[0104] FIG. 15 is a cross-sectional view of the second shielded cable 90B.

[0105] The second shielded cable 90B has two insulated wires 91. The two insulated wires 91 are twisted together. The outer conductor 92 is provided to shield the two insulated wires 91.

[0106] The second terminal unit 14B includes two internal terminals 20B, a dielectric member 30 that houses the two internal terminals 20B, an external terminal 40 that is electrically connected to the external conductor 92, a conductive first additional member 50A, and a conductive second additional member 50B.

[0107] The dielectric member 30 is composed of a first component member 31A that is assembled to the internal terminal 20B from above, and a second component member 31B that is assembled to the internal terminal 20B from below. The first component member 31A is integrally molded with the first additional member 50A, and the second component member 31B is integrally molded with the second additional member 50B.

[0108] The second terminal unit 14B is assembled as follows: (1) The crimping portions 24 of the two internal terminals 20B are crimped to the two internal conductors 91a of the second shielded cable 90B, which has been terminated. (2) The first component member 31A, which is integrated with the first additional member 50A, is assembled from above to the second shielded cable 90B and the two internal terminals 20B, and the second component member 31B, which is integrated with the second additional member 50B, is assembled from below. (3) The internal terminals 20B, the dielectric member 30, etc. are placed from above on the external terminal 40 (not shown) in an open state. (4) The accommodating portion 41, the first tightening portion 43, and the second tightening portion 45 of the external terminal 40 are deformed to close the external terminal 40.

[0109] In the second shielded cable 90B that has been subjected to terminal processing, the front end of the first shield portion 92a is located rearward of the front ends of the insulators 91b of the two insulated wires 91.

[0110] (Internal Terminal 20B) FIG. 13 shows an enlarged view of the internal terminal 20B of the second terminal unit 14B.

[0111] In the internal terminal 20B, the impedance adjusting portion 25 has a radially extending portion 25b extending radially outward and an axially extending portion 25a extending axially. In this embodiment, the radially extending portion 25b extends radially outward in a direction inclined toward the other axial side. The axially extending portion 25a is a carrier disconnection portion.

[0112] (Dielectric member 30, first additional member 50A, second additional member 50B) In the second terminal unit 14B, the first component member 31A and the second component member 31B share common parts, and the first additional member 50A and the second additional member 50B share common parts. Hereinafter, when no particular distinction is made, they will simply be referred to as component member 31 and additional member 50.

[0113] In the second terminal unit 14B as well, the component member 31 is formed from resin by insert molding using the additional member 50 as an insert component.

[0114] FIG. 14 shows the additional member 50 of the second terminal unit 14B.

[0115] As shown in FIG. 14 , the additional member 50 includes a first connecting portion 51 , a second connecting portion 52 , and a linking portion 53 .

[0116] 14 , the first connecting portion 51 has a flat plate shape with its thickness oriented in the opposing direction. The radially outer surface of the first connecting portion 51 is exposed and not covered by the resin of the component 31, while the other surfaces of the first connecting portion 51 are covered by the resin of the component 31.

[0117] A pair of side portions 55 are provided on both sides in the width direction of the first connecting portion 51. The first connecting portion 51 and the pair of side portions 55 constitute front portions 51, 55 of the additional member 50. The front portions 51, 55 have a substantially U-shaped cross section that is open inward in the opposing direction.

[0118] The second connecting portion 52 has a cross-sectional shape of an arc that is convex outward in the opposing direction. The second connecting portion 52 has the same width dimension from the front end to the rear end.

[0119] The connecting portion 53 connects the rear ends of the front portions 51, 55 to the front end of the second connecting portion 52. The cross-sectional shape of the front end of the connecting portion 53 is substantially U-shaped, and the cross-sectional shape of the rear end of the front portion 53b is arc-shaped.

[0120] The connecting portion 53 has a front portion 53b, a middle portion 53c, and a rear portion 53d. The front end of the front portion 53b has a generally U-shaped cross section, and the rear end of the front portion 53b has an arc-shaped cross section. The middle portion 53c and the rear portion 53d each have an arc-shaped cross section. The cross-sectional size of the middle portion 53c does not change from front to back.

[0121] The connecting portion 53 has a generally U-shaped or arc-shaped (generally C-shaped) cross section that opens inward in the opposing direction from its front end to its rear end. This improves high-speed transmission performance. In particular, with the second shielded cable 90B, the distance in the front-to-rear direction from the front end of the first shield portion 92a to the front end of the insulator 91b tends to be large due to the relationship with the two twisted insulated electric wires 91. For this reason, the above-described structure of the connecting portion 53 is effective.

[0122] 12 and 14, the connecting portion 53 does not have a vertical portion (see vertical portion 53a in FIG. 6) extending substantially parallel to the opposing direction. In the second terminal unit 14B, the distance in the front-to-rear direction between the rear end of the first connecting portion 51 and the front end of the second connecting portion 52 is greater than that in the first terminal unit 14A. In the front-to-rear direction, the position of the front portion 53b of the connecting portion 53 substantially coincides with the position of the rear end of the crimping portion 24 of the internal terminal 20B.

[0123] <Operation and Effect> Next, the operation and effect of this embodiment will be described.

[0124] Hereinafter, when describing the effects common to the first terminal unit 14A and the second terminal unit 14B, they will be described as the effects of the terminal unit 14. Furthermore, when there is no need to distinguish between the internal terminals 20A and 20B, they will simply be referred to as the internal terminals 20.

[0125] 2, the terminal unit 14 is attached to a shielded cable 90 (see FIGS. 9 and 15) having an inner conductor 91a, an outer conductor 92 that shields the inner conductor 91a, and a sheath 93 that covers the outer conductor 92. As shown in FIGS. 3 and 10, the terminal unit 14 includes an inner terminal 20 that is electrically connected to the inner conductor 91a, a dielectric member 30 that houses the inner terminal 20, and an outer terminal 40 that has a housing portion 41 that houses the inner terminal 20 and the dielectric member 30.

[0126] 3 and 10 , in this embodiment, the terminal unit 14 includes a conductive first addition member 50A that is formed separately from the external terminal 40. As shown in FIGS. 6 and 12 , the first addition member 50A has a first connection portion 51 that connects to the accommodating portion 41, and a second connection portion 52 that connects to the external conductor 92. Therefore, the first addition member 50A can electrically connect the accommodating portion 41 of the external terminal 40 and the external conductor 92.

[0127] 3 and 10, in this embodiment, the second connection portion 52 of the first addition member 50A comes into contact with an exposed portion 92a1, which is a portion of the outer conductor 92 that is exposed from the sheath 93. Therefore, the first addition member 50A is not inserted between the sheath 93 and the outer conductor 92 (see the sleeve in Patent Document 1), and therefore assembly efficiency is good.

[0128] 3 and 10, the second connecting portion 52 of the first addition member 50A is disposed so as to cover the exposed portion 92a1 from the radially outer side perpendicular to the axial direction, which makes it easy to dispose the first addition member 50A.

[0129] 4 and 11, the terminal unit 14 includes a first tightening portion 43 that tightens the second connecting portion 52 and the exposed portion 92a1 of the first addition member 50A. Therefore, the first tightening portion 43 can ensure reliable contact between the second connecting portion 52 of the first addition member 50A and the exposed portion 92a1 of the outer conductor 92.

[0130] 4 and 11 , in the present embodiment, the first tightening portion 43 is provided as a part of the external terminal 40. Therefore, compared to an embodiment in which the first tightening portion 43 is provided as a member separate from the external terminal 40, the number of parts can be reduced.

[0131] 8 and 14, the second connection portion 52 of the first addition member 50A has an arc-shaped cross-sectional shape, which makes it possible to prevent the cross-sectional shape of the shielded cable 90 from being distorted by the fastening force of the first fastening portion 43.

[0132] In this embodiment, as shown in FIGS. 9 and 15 , the outer conductor 92 includes a first shield portion 92a and a second shield portion 92b provided radially outward of the first shield portion 92a. As shown in FIGS. 3 and 10 , the exposed portion 92a1 is a portion of the first shield portion 92a that is exposed from the sheath 93 and the second shield portion 92b. As shown in FIGS. 6 and 12 , the external terminal 40 includes a second tightening portion 45. The second tightening portion 45 tightens the reinforcing member 95 and a folded portion 92b1 of the second shield portion 92b that is folded back to cover the reinforcing member 95. Therefore, the tip side of the second shield portion 92b is folded back to cover the reinforcing member 95, and this folded portion (folded portion 92b1) and the reinforcing member 95 are tightened by the second tightening portion 45. The reinforcing member 95 functions to prevent the cross-sectional shape of the shielded cable 90 from changing when the folded-back portion 92b1 is tightened by the second tightening portion 45. Furthermore, when the folded-back portion 92b1 of the second shield portion 92b is firmly sandwiched between the reinforcing member 95 and the second tightening portion 45, the external terminal 40 and the shielded cable 90 will not separate even if the shielded cable 90 is pulled. As a result, it is possible to prevent a decrease in high-speed transmission performance due to a change in the cross-sectional shape of the shielded cable 90 and to firmly fix the external terminal 40 and the shielded cable 90.

[0133] 3 and 10 , in this embodiment, the terminal unit 14 includes a conductive second additional member 50B formed separately from the external terminal 40. As shown in FIGS. 6 and 12 , the second additional member 50B has a first connecting portion 51 that connects to the accommodating portion 41, and a second connecting portion 52 that connects to the external conductor. Therefore, the second additional member 50B can electrically connect the accommodating portion 41 of the external terminal 40 and the external conductor 92.

[0134] Furthermore, in this embodiment, the second connection portion 52 of the second addition member 50B comes into contact with an exposed portion 92a1, which is a portion of the outer conductor 92 that is exposed from the sheath 93. For this reason, the second addition member 50B is not inserted between the sheath 93 and the outer conductor 92 (see the sleeve in Patent Document 1), and therefore assembly efficiency is good.

[0135] In this embodiment, as shown in FIGS. 4 and 10 , the housing 41 includes main body portions 41a and 41b and a pair of lid portions 41c1. The main body portions 41a and 41b have a shape that opens in an opening direction that is perpendicular to the axial direction. When the lid portion 41c1 is open, it allows the dielectric member 30 to be placed inside the main body portions 41a and 41b from the opening direction. When the lid portion 41c1 is closed, it covers the dielectric member 30 placed inside the main body portions 41a and 41b from the opening direction. Therefore, first, with the lid portion 41c1 open, the dielectric member 30 is placed inside the main body portions 41a and 41b from the direction perpendicular to the axial direction (opening direction). Then, with the lid portion 41c1 closed, the dielectric member 30 placed inside the main body portions 41a and 41b can be covered by the lid portion 41c1 from the opening direction. Therefore, for example, it is not necessary to insert the dielectric member 30 into the housing portion 41 from one axial side or the other axial side, which makes it easy to assemble the dielectric member 30 into the housing portion 41.

[0136] 4 and 11, the lid portion 41c1 includes an interlocking portion 47. When the lid portion 41c1 is closed, the interlocking portion 47 is interlocked with the held members 30, 50 housed in the housing portion 41. Therefore, when springback occurs, the interlocking portion 47 can prevent the held members 30, 50 and the lid portion 41c1 from separating from each other.

[0137] In this embodiment, the terminal unit 14 includes a conductive first addition member 50A formed separately from the external terminals 40. The first addition member 50A has a first connection portion 51 that connects to the accommodation portion 41. The first connection portion 51 of the first addition member 50A is accommodated in the accommodation portion 41. Therefore, impedance can be adjusted by the first connection portion 51 of the first addition member 50A. Furthermore, with the lid portion 41c1 open, the first connection portion 51 of the first addition member 50A is placed inside the main body portions 41a, 41b from a direction perpendicular to the axial direction (opening direction), and then the lid portion 41c1 is closed, whereby the first connection portion 51 of the first addition member 50A can be accommodated in the accommodation portion 41. Therefore, for example, there is no need to insert the first addition member 50A into the accommodation portion 41 from the other axial side, making it easier to place the first addition member 50A in the accommodation portion 41.

[0138] In addition, in this embodiment, the first connection portion 51 of the first addition member 50A comes into contact with the pair of lid portions 41c1 in the closed state. Therefore, the pair of lid portions 41c1 can be used to electrically connect the accommodation portion 41 and the first addition member 50A.

[0139] In this embodiment, the terminal unit 14 includes a conductive second addition member 50B formed separately from the external terminals 40. The second addition member 50B has a first connection portion 51 that connects to the accommodation portion 41. The first connection portion 51 of the second addition member 50B is accommodated in the accommodation portion 41. Therefore, the impedance can be adjusted by the first connection portion 51 of the second addition member 50B. Furthermore, with the lid portion 41c1 in an open state, the first connection portion 51 of the second addition member 50B is arranged inside the main body portions 41a, 41b from a direction perpendicular to the axial direction (opening direction), and then the lid portion 41c1 is closed, whereby the first connection portion 51 of the second addition member 50B can be accommodated in the accommodation portion 41. Therefore, for example, there is no need to insert the second addition member 50B into the accommodation portion 41 from the other axial side, which makes it easier to arrange the second addition member 50B in the accommodation portion 41.

[0140] Furthermore, in this embodiment, the first connection portion 51 of the second addition member 50B comes into contact with the bottom plate portions 41a of the main body portions 41a, 41b. Therefore, the accommodation portion 41 and the second addition member 50B can be electrically connected using the bottom plate portions 41a of the main body portions 41a, 41b.

[0141] 6 and 12 , in this embodiment, the external terminal 40 includes conductive path-forming portions 42, 43, 44, and 45 that form a conductive path between the accommodating portion 41 and the external conductor 92. The terminal unit 14 also includes a conductive first additional member 50A formed separately from the external terminal 40. The first additional member 50A includes conductive path-forming portions 51, 52, and 53 that form a conductive path between the accommodating portion 41 and the external conductor 92. The conductive path-forming portions 42, 43, 44, and 45 of the external terminal 40 and the conductive path-forming portions 51, 52, and 53 of the first additional member 50A face each other across the internal conductor 91a. Therefore, the conductive path-forming portions 42, 43, 44, and 45 of the external terminal 40 and the conductive path-forming portions 51, 52, and 53 of the first additional member 50A form a pair of conductive paths that face each other across the internal conductor 91a. As a result, a terminal unit 14 with excellent high-speed transmission performance can be realized.

[0142] 6 and 12 , in this embodiment, the terminal unit 14 includes a conductive second additional member 50B formed separately from the external terminal 40. The second additional member 50B includes conductive path-forming portions 51, 52, and 53 that form a conductive path between the accommodation portion 41 and the external conductor 92. The conductive path-forming portions 51, 52, and 53 of the first additional member 50A and the conductive path-forming portions 51, 52, and 53 of the second additional member 50B face each other across the internal conductor 91a. The conductive path-forming portions 51, 52, and 53 of the second additional member 50B are located radially inward of the conductive path-forming portions 42, 43, 44, and 45 of the external terminal 40. Therefore, the conductive path-forming portions 51, 52, and 53 of the first additional member 50A and the conductive path-forming portions 51, 52, and 53 of the second additional member 50B can form a pair of conductive paths that face each other across the internal conductor 91a. Compared to an embodiment in which the second additional member 50B is not provided, the pair of conductive paths can be easily made to have the same or similar structures, thereby improving high-speed transmission performance.

[0143] 8 and 14, in this embodiment, the conductive path-forming portions 51, 52, and 53 of the first addition member 50A and the conductive path-forming portions 51, 52, and 53 of the second addition member 50B have the same shape. This allows the conductive paths formed by the conductive path-forming portions 51, 52, and 53 of the first addition member 50A and the conductive paths formed by the conductive path-forming portions 51, 52, and 53 of the second addition member 50B to have the same structure. This makes it possible to improve high-speed transmission performance.

[0144] Furthermore, in this embodiment, as shown in FIGS. 8 and 14, the first addition member 50A and the second addition member 50B have the same shape. Therefore, the first addition member 50A and the second addition member 50B can share parts.

[0145] 3 and 10 , in this embodiment, the dielectric member 30 includes a first component 31A that is assembled to the internal terminal 20 from one side in the opposing direction, which is a direction perpendicular to the axial direction, and a second component 31B that is assembled to the internal terminal 20 from the other side in the opposing direction. Therefore, the internal terminal 20 can be assembled to the dielectric member 30 in the direction perpendicular to the axial direction (the opposing direction), making the internal terminal 20 less likely to buckle and facilitating the assembly of the terminal unit 14.

[0146] Furthermore, in this embodiment, the first addition member 50A is integrated with the first component member 31A. Therefore, the first addition member 50A and the first component member 31A can be handled as a single unit. This makes it easier to assemble the terminal unit.

[0147] Furthermore, in this embodiment, the second addition member 50B is integrated with the second component member 31B. Therefore, the second addition member 50B and the second component member 31B can be handled as a single unit, which makes it easier to assemble the terminal unit.

[0148] In this embodiment, the first addition member 50A and the second addition member 50B have the same shape, and the first component member 31A and the second component member 31B have the same shape. Therefore, it is possible to share parts not only between the first addition member 50A and the second addition member 50B, but also between the first component member 31A and the second component member 31B.

[0149] [Supplementary explanation of the above embodiment] Although the preferred embodiment of the connector of the present disclosure has been described above, the present disclosure is not limited thereto. The following explanation is a supplementary explanation just to be sure.

[0150] In the above embodiment, the impedance adjusting portion 25 of the internal terminal 20 of the first terminal unit 14A (coaxial terminal unit) does not have the radially extending portion 25 b, and the impedance adjusting portion 25 of the internal terminal 20 of the second terminal unit 14B (differential terminal unit) has the radially extending portion 25 b. However, the present disclosure is not limited to this.

[0151] In the above embodiment, the internal terminal 20 includes the impedance adjusting portion 25 connected to the crimping portion 24. This increases the capacitance of the crimping portion 24 and reduces the impedance of the crimping portion 24. However, the internal terminal of the present disclosure is not limited to this.

[0152] In the above embodiment, the storage unit 41 includes the main body portions 41 a and 41 b and the pair of lid portions 41 c 1. The pair of lid portions 41 c 1 constitute the top plate portion 41 c. However, the top plate portion may be constituted by a single lid portion instead of the pair of lid portions 41 c 1.

[0153] DESCRIPTION OF SYMBOLS 10 Connector 12 Housing 14A First terminal unit (terminal unit) 14B Second terminal unit (terminal unit) 20A Internal terminal of first terminal unit (internal terminal) 20B Internal terminal of second terminal unit (internal terminal) 30 Dielectric member (held member) 31A First component member 31B Second component member 40 External terminal 41 Holding portion 41a, 41b Main body portion 41a Bottom plate portion 41b Side plate portion 41c Top plate portion 41c1 Lid portion 43 First tightening portion 45 Second tightening portion 47 Locked portion 42, 43, 44, 45 Conductive path forming portion 50 Additional member (held member) 50A First additional member (additional member, held member) 50B Second additional member (additional member, held member) 51, 52, 53 Conductive path forming portion 51 First connection portion 52 Second connection portion 90A First shielded cable (shielded cable) 90B Second shielded cable (shielded cable) 91 Insulated wire 91a Inner conductor 91b Insulator 92 Outer conductor 92a First shield portion 92a1 Exposed portion 92b Second shield portion 92b1 Folded portion 93 Sheath 95 Reinforcing member

Claims

1. A terminal unit to be attached to a shielded cable having an inner conductor, an outer conductor that shields the inner conductor, and a sheath that covers the outer conductor, wherein when the direction in which the tip of the shielded cable faces is referred to as one axial side, the terminal unit comprises: an inner terminal electrically connected to the inner conductor, a dielectric member that houses the inner terminal, and an outer terminal having a housing portion that houses the inner terminal and the dielectric member, wherein the housing portion comprises: a main body portion having a shape that opens in an opening direction that is a direction perpendicular to the axial direction, and a lid portion that, in an open state, allows the dielectric member to be placed inside the main body portion from the opening direction, and, in a closed state, covers the dielectric member placed inside the main body portion from the opening direction.

2. The terminal unit according to claim 1, wherein the cover portion has a latch portion that latches onto a member to be accommodated in the accommodating portion when the cover portion is closed.

3. The terminal unit according to claim 1, wherein the terminal unit comprises a conductive first additional member formed separately from the external terminal, the first additional member having a first connecting portion connected to the accommodating portion, and the first connecting portion of the first additional member being accommodated in the accommodating portion.

4. The terminal unit according to claim 3, wherein the first connection portion contacts the cover portion in the closed state.

5. The terminal unit according to claim 3, wherein the first additional member has a second connection portion that connects to the outer conductor.

6. The terminal unit according to claim 5, wherein the second connection portion of the first additional member contacts an exposed portion of the outer conductor that is exposed from the sheath.

7. A terminal unit according to claim 3, wherein the terminal unit comprises a conductive second additional member formed separately from the external terminal, the second additional member having a first connecting portion connected to the accommodating portion, and the first connecting portion of the second additional member being accommodated in the accommodating portion.

8. The terminal unit according to claim 7, wherein the first connection portion of the second addition member contacts the bottom plate portion of the main body portion.

9. A terminal unit as described in claim 1, wherein the dielectric member comprises: a first component member that is assembled to the internal terminal from one side in an assembly direction that is perpendicular to the axial direction; and a second component member that is assembled to the internal terminal from the other side in the assembly direction.

10. The terminal unit according to claim 9, wherein the first component member and the second component member have the same shape.

11. A terminal unit as described in claim 3, wherein the dielectric member comprises a first component member that is assembled to the internal terminal from one side in an assembly direction that is perpendicular to the axial direction, and a second component member that is assembled to the internal terminal from the other side in the assembly direction, and the first additional member is integrated with the first component member.

12. A connector comprising: the terminal unit according to claim 1; and a housing for holding the terminal unit.

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