Cable assembly

Abstract

To provide a cable assembly in which an electric wire holding force is increased and connection reliability is improved.SOLUTION: A female terminal 6 is attached to a terminal of a twisted pair cable 5. An inner housing 7 houses the female terminal 6. An outer terminal 8 houses the inner housing 7. The female terminal 6 has a locking piece 622 protruding upward. The inner housing 7 includes a main body portion 71 provided with a terminal housing chamber 711 housing the female terminal 6, a lid portion 72 opening and closing a terminal housing chamber 711, and a hinge portion 73 that is provided between a rear end portion of the lid portion 72 and the main body portion 71 and rotatably opens and closes the lid portion 72 about an axis in the left-right direction. The lid portion 72 is located on the rear side of the locking piece 622 in the closed position, and includes a locking projection 721 that locks with the locking piece 622.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a cable assembly. [Background technology]

[0002] A conventional shielded connector equipped with a shielded twisted pair cable includes a cable assembly as described in Patent Document 1. In the cable assembly of Patent Document 1, the sheath at the end of the cable is stripped to expose the braid. A sleeve is crimped around the outer periphery of the exposed braid, and the braid is folded back around the sleeve. The shielded terminal has a braid crimping piece that crimps the braid folded back around the sleeve, and a sheath crimping piece that crimps the sheath.

[0003] According to the cable assembly described above, when a pulling force is applied in a direction that moves the cable away from the shield terminal, the sleeve moves in the pulling direction, causing the sleeve and the sheath crimping piece to come into contact with each other. This prevents the cable from moving away from the shield terminal, improving the wire retention force and improving the reliability of the electrical connection with the mating connector.

[0004] However, the cable assembly of Patent Document 1 mentioned above cannot be applied to twisted pair cables that do not have a braid, and even if it is forcibly applied, there are problems in that the wire retention force is reduced and the connection reliability with the mating connector is reduced. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2022-836 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cable assembly which has an increased wire holding force and improved connection reliability. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, a cable assembly according to the present invention has the following features. Electric wires and an inner terminal attached to an end of the electric wire; an inner housing that accommodates the inner terminal; an outer terminal that accommodates the inner housing; A cable assembly, comprising: The inner terminal has a locking piece that protrudes in a radial direction of the electric wire, the inner housing has a main body portion provided with a terminal accommodating chamber for accommodating the inner terminal, a lid portion for opening and closing the terminal accommodating chamber, and a hinge portion provided in the lid portion between the end portion of the electric wire on the terminal side in the longitudinal direction and the main body portion, the hinge portion rotatably opening and closing the lid portion about an axis in a direction intersecting both the longitudinal direction of the electric wire and the protruding direction of the locking piece, The cover portion has a first locking portion that is located farther from the end in the longitudinal direction than the locking piece in the closed position and that locks with the locking piece. It is a cable assembly. [Effects of the Invention]

[0008] The cable assembly according to the present invention has the effect of increasing the wire holding force and improving the connection reliability.

[0009] The present invention has been briefly described above. The details of the present invention will become clearer by reading the following detailed description of the invention (hereinafter referred to as "embodiments") with reference to the accompanying drawings. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is an exploded perspective view of a shielded connector incorporating a cable assembly of the present invention. [Figure 2] FIG. 2 is a perspective view of the cable assembly shown in FIG. [Figure 3] FIG. 3 is an exploded perspective view of the cable assembly shown in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 5] FIG. 5 is a cross-sectional view taken along line BB in FIG. [Figure 6] FIG. 6 is a partial cross-sectional view taken along line CC in FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along line AA in FIG. 2 in a state where the female terminal is rotated. [Figure 8] 8A to 8C are cross-sectional views illustrating a manufacturing process of the cable assembly shown in FIG. [Figure 9] 9A to 9C are cross-sectional views illustrating a manufacturing process of the cable assembly shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0012] For the sake of convenience, the following definitions are used for "front," "rear," "left," "right," "upper," and "lower" as shown in Figures 1 to 9. The "front-rear direction," "left-right direction," and "upper-lower direction" are perpendicular to one another. The "upper-lower direction" corresponds to the "radial direction" and "projecting direction" of the present invention, the "front-rear direction" corresponds to the "longitudinal direction" of the present invention, and the "left-right direction" corresponds to the "intersecting direction" of the present invention.

[0013] As shown in FIG. 1, the shielded connector 1 includes an outer housing 2, a Terminal Position Assurance (TPA) 3, and a cable assembly 4. The outer housing 2 is a resin housing that houses the cable assembly 4, which will be described later. The TPA 3 is provided so that it can be attached to the outer housing 2 from below. The TPA 3 is provided so that it can be locked to the outer housing 2 at a temporary locking position and a full locking position. At the temporary locking position, the TPA 3 allows the cable assembly 4 to be inserted into the outer housing 2. At the full locking position, the TPA 3 locks onto the cable assembly 4, preventing it from slipping out of the outer housing 2.

[0014] As shown in Figures 2 and 3, the cable assembly 4 has a twisted pair cable 5 as an electric wire, a metal female terminal 6 (see Figure 3) as an inner terminal attached to the end of the twisted pair cable 5, a resin inner housing 7 that accommodates the female terminal 6, and a metal outer terminal 8 that accommodates the inner housing 7.

[0015] 3, the twisted pair cable 5 has a twisted electric wire 51 formed by twisting two electric wires together, and an insulating sheath 52 that covers the twisted electric wire 51. In the twisted pair cable 5 of this embodiment, the twisted electric wire 51 is directly covered by the sheath 52 and does not have a braid.

[0016] The sheath 52 at the end of the twisted pair cable 5 is removed, exposing the end of the twisted electric wire 51. The coverings at the end of the two electric wires that make up the twisted electric wire 51 are removed, exposing the core wires. Two female terminals 6 are provided. The two female terminals 6 are electrically connected to the core wires of the two electric wires that make up the twisted electric wire 51, respectively.

[0017] The female terminal 6 has a terminal connecting portion 61, a locking portion 62, and a core wire crimping portion 63. The terminal connecting portion 61 is connected to a terminal of a mating connector. The locking portion 62 is provided rearward of the terminal connecting portion 61 and is locked to the inner housing 7. As shown in FIG. 4, the locking portion 62 has a bottom plate portion 621 having an arc-shaped cross section and a pair of locking pieces 622, 622 erected upward from both left and right sides of the bottom plate portion 621. The pair of locking pieces 622, 622 are erected obliquely so that their tips contact each other and the distance between them narrows toward the tips.

[0018] As shown in Fig. 3, the core wire crimping portion 63 is provided rearward of the locking portion 62 and is crimped to the core wires of the two electric wires that make up the twisted electric wire 51. As shown in Fig. 5, the core wire crimping portion 63 has a bottom plate portion 631 on which the core wire is mounted, and a pair of crimping pieces 632, 632 that stand upright from both the left and right sides of the bottom plate portion 631 and are crimped toward the core wire. As shown in Fig. 3, the pair of locking pieces 622, 622 are provided to protrude upward from the terminal connection portion 61 and the core wire crimping portion 63.

[0019] The inner housing 7 has a main body 71, a lid 72 that covers the main body 71, and a hinge 73 that rotatably opens and closes the lid 72. The main body 71 is provided with terminal accommodating chambers 711 that accommodate the female terminals 6, a locking wall 712 for locking the lid 72, and a contact protrusion 713 (see FIG. 6) that contacts the front side of the female terminal 6. When viewed from the front, the main body 71 is provided in the shape of an ellipse that is long in the left-right direction, and in the shape of a column that extends in the front-rear direction. In this embodiment, the main body 71 is provided with two terminal accommodating chambers 711, 711 that are aligned in the left-right direction.

[0020] More specifically, through holes penetrating in the front-to-rear direction are provided side by side in the left-to-right direction in front of and behind the lid portion 72 of the main body portion 71, and these two through holes serve as terminal accommodating chambers 711. As shown in Fig. 6, the terminal accommodating chamber 711 in front of the lid portion 72 accommodates the terminal connecting portion 61 of the female terminal 6. The terminal accommodating chamber 711 behind the lid portion 72 accommodates the electric wires that constitute the twisted electric wires 51 behind the female terminal 6.

[0021] As shown in Fig. 3, a pair of grooves 711A, 711A that constitute the terminal accommodating chamber 711 is provided in the portion of the main body 71 that is covered by the lid 72. The pair of grooves 711A, 711A are open at the top. The pair of grooves 711A, 711A extend in the front-rear direction and communicate with the terminal accommodating chamber 711, which is a through-hole, located in front of and behind the lid 72. Each of the pair of grooves 711A, 711A has a first groove portion 711A-1 (see Fig. 4) that accommodates the bottom plate portion 621 of the locking portion 62, and a second groove portion 711A-2 (see Fig. 5) that is provided behind the first groove portion 711A-1 and accommodates the crimping piece 632 of the female terminal 6.

[0022] As shown in Fig. 4, the first groove 711A-1 is formed in a substantially semicircular shape, and the bottom plate portion 621 of the locking portion 62 is fitted into the first groove 711A-1. That is, the diameter of the first groove 711A-1 and the diameter of the bottom plate portion 621 are formed to be substantially the same. As shown in Fig. 5, the second groove 711A-2 is formed in a shape whose cross section is circular and slightly cut away above the center. The diameter of the second groove 711A-2 is set to be larger than the width in the left-right direction and the height in the up-down direction of the core wire crimping portion 63.

[0023] The locking wall 712 is provided standing upward from between the second groove portions 711A-2 of the main body portion 71. A pair of locking protrusions 712A, 712A serving as second locking portions are provided on both left and right sides of the locking wall 712. The upper surfaces of the pair of locking protrusions 712A, 712A are provided with inclined surfaces that protrude downward.

[0024] As shown in FIG. 6, the contact protrusion 713 is provided on the lower side of the hinge portion 73, and protrudes rearward from the main body portion 71.

[0025] The cover 72 has a locking projection 721 (see FIG. 6) as a first locking portion, a pair of recesses 722, 722 (see FIG. 4), and a clamping portion 723 (see FIGS. 3 and 5). As shown in FIG. 6, the locking projection 721 is provided so as to protrude downward from the cover 72 in the closed position. In the closed position, the locking projection 721 is located rearward of the locking piece 622 of the female terminal 6 and is locked by the locking piece 622.

[0026] As shown in FIG. 4, the pair of recesses 722, 722 are provided in front of the locking projection 721 and cover the locking piece 622 from above. The pair of recesses 722, 722 face the pair of first groove portions 711A-1, 711A-1 in the up-down direction and accommodate the locking portion 62 of the female terminal 6 between them. The pair of recesses 722, 722 are provided in a semicircular shape. The diameter of the recess 722 is set to be larger than the diameter of the first groove portion 711A-1. The diameter of the recess 722 is set so that the locking piece 622 does not interfere with (come into contact with) the cover portion 72 even when the female terminal 6 rotates around an axis in the front-to-rear direction, as shown in FIG.

[0027] 3 and 5, the clamping portion 723 is provided at the rear end of the lid portion 72 and clamps both left and right sides of the locking wall 712. As shown in FIG. 5, the clamping portion 723 is provided with a pair of locking protrusions 723A, 723A as third locking portions that vertically lock with the pair of locking protrusions 712A, 712A provided on the locking wall 712. The pair of locking protrusions 723A, 723A protrude in the left-right direction from the clamping portion 723. The lower surfaces of the pair of 723A, 723A are provided with inclined surfaces that protrude upward.

[0028] The hinge portion 73 is disposed between the front end of the lid portion 72 and the main body portion 71 and is thinner than the lid portion 72. The hinge portion 73 allows the lid portion 72 to rotate about an axis that passes through the hinge portion 73 and extends in the left-right direction, allowing the front end of the lid portion 72 to open and close in the up-down direction. Specifically, the lid portion 72 is rotatable between a closed position and an open position. In the closed position, the lid portion 72 covers the first groove 711A-1 and the second groove 711A-2 formed in the main body portion 71, as shown in FIGS. 4 and 5. In the open position, the rear end of the lid portion 72 is positioned upward and forward, exposing the first groove 711A-1 and the second groove 711A-2 of the main body portion 71, as shown in FIG. 8. In the closed position, the lid portion 72 is vertical in the up-down direction, as shown in FIG. 6. In the open position, the lid portion 72 is vertical in the front-rear direction, as shown in FIG. 8.

[0029] 3, the outer terminal 8 has an accommodating portion 81 that accommodates the main body 71 of the inner housing 7, and a crimping portion 82 that crimps the sheath 52 of the twisted pair cable 5. The accommodating portion 81 is formed in an elongated cylindrical shape, and the main body 71 is accommodated inside. That is, the lid portion 72 is covered by the accommodating portion 81. The crimping portion 82 crimps the end of the sheath 52.

[0030] Next, a manufacturing procedure for the cable assembly 4 configured as described above will be described. First, a female terminal 6 is attached to each of the two electric wires that make up the twisted electric wire 51. Next, as shown in Fig. 8, with the cover 72 of the inner housing 7 in the open position, the female terminal 6 attached to the twisted electric wire 51 is inserted into the terminal accommodating chamber 711. At this time, the female terminal 6 is inserted from the rear opening of the terminal accommodating chamber 711 and directed toward the front.

[0031] Because the lid portion 72 is in the open position, the lid portion 72 allows and does not obstruct the insertion of the female terminal 6. When the female terminal 6 is moved toward the front side within the terminal accommodating chamber 711, the locking piece 622 of the female terminal 6 abuts against the abutment protrusion 713. This abutment position is the correct position of the female terminal 6 within the terminal accommodating chamber 711.

[0032] Once the locking piece 622 of the female terminal 6 abuts against the abutment protrusion 713, the rear end of the lid portion 72 is then rotated downward and forward to place the lid portion 72 in the closed position, as shown in Fig. 9. This positions the locking protrusion 721 of the lid portion 72 behind the locking piece 622 of the female terminal 6. As a result, even if a backward force is applied to the twisted pair cable 5, the locking piece 622 of the female terminal 6 is locked by the locking protrusion 721 of the lid portion 72, preventing the female terminal 6 from moving backward.

[0033] 5, when the rear end of the lid portion 72 is pushed downward, the pair of locking protrusions 723A, 723A provided on the lid portion 72 rides up over the pair of locking protrusions 712A, 712A provided on the main body portion 71 and is positioned below the pair of locking protrusions 712A, 712A. As a result, the locking protrusions 723A, 723A provided on the lid portion 72 and the pair of locking protrusions 712A, 712A provided on the main body portion 71 lock together in the vertical direction, and the lid portion 72 is locked in the closed position.

[0034] Thereafter, the main body 71 is accommodated in the accommodation portion 81 of the outer terminal 8, and the crimping portion 82 of the outer terminal 8 is crimped onto the sheath 52 of the twisted pair cable 5, thereby completing the cable assembly 4.

[0035] According to the embodiment described above, when the cover 72 is rotated to the open position, the female terminal 6 is allowed to be inserted into the terminal accommodating chamber 711, and when the cover 72 is rotated to the closed position, the locking protrusion 721 of the cover 72 is locked with the locking piece 622 of the female terminal 6. This increases the holding force of the twisted pair cable 5, thereby improving the connection reliability.

[0036] According to the above-described embodiment, the housing portion 81 of the outer terminal 8 is provided so as to cover the lid portion 72. When the twisted pair cable 5 is pulled rearward, the lid portion 72 tends to open, but since the lid portion 72 is covered by the housing portion 81, the opening of the lid portion 72 can be prevented. This further increases the holding force of the twisted pair cable 5, thereby improving the connection reliability.

[0037] According to the embodiment described above, the locking protrusions 712A, 712A are provided on the locking wall 712 that stands between the second groove portion 711A-2 (terminal accommodating chamber 711). A clamping portion 723 that sandwiches the locking wall 712 in the left-right direction is provided at the rear end of the lid portion 72, and a pair of locking protrusions 723A, 723A that vertically lock with the pair of locking protrusions 712A, 712A is provided on the clamping portion 723. This vertically locks the lid portion 72 and the main body portion 71, further increasing the holding force of the twisted pair cable 5 and improving connection reliability.

[0038] According to the embodiment described above, the diameter of the recess 722 is set to be larger than the diameter of the first groove 711A-1. As a result, as shown in Fig. 7, even when the female terminal 6 rotates, the locking piece 622 does not interfere with the lid portion 72, and therefore the locking piece 622 of the female terminal 6 does not get caught in the lid portion 72, improving workability.

[0039] The present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, etc. Furthermore, the material, shape, size, number, location, etc. of each component in the above-described embodiments are arbitrary and not limited as long as they can achieve the present invention.

[0040] According to the above-described embodiment, the housing portion 81 of the outer terminal 8 is provided so as to cover the lid portion 72, but this is not limited thereto. The outer terminal 8 does not have to cover the lid portion 72.

[0041] According to the embodiment described above, the cover 72 is provided with the clamping portion 723 that clamps the locking wall 712, but this is not limited to this. It is not essential to provide the clamping portion 723, and it does not have to be provided.

[0042] According to the embodiment described above, the semicircular recesses 722, 722 are provided in the cover portion 72, but this is not limited to this. If it is not necessary to allow rotation of the female terminal 6, the shape of the recesses 722, 722 does not have to be semicircular.

[0043] According to the above-described embodiment, the female terminal 6 is provided in a substantially cylindrical shape, but this is not limited thereto. If the impedance disturbance is tolerable, the female terminal 6 may be provided in a rectangular cylindrical shape.

[0044] Here, the features of the above-described embodiments of the cable assembly according to the present invention will be briefly summarized and listed below in [1] to [4].

[0045] [1] Electric wire (5), an inner terminal (6) attached to an end of the electric wire (5); an inner housing (7) that accommodates the inner terminal (6); and an outer terminal (8) that accommodates the inner housing (7). A cable assembly (4), The inner terminal (6) has a locking piece (622) that protrudes in the radial direction of the electric wire (5), The inner housing (7) has a main body (71) provided with a terminal accommodating chamber (711) that accommodates the inner terminal (6), a lid (72) that opens and closes the terminal accommodating chamber (711), and a hinge (73) that is provided in the lid (72) between the end of the terminal side (front side) in the longitudinal direction (front-rear direction) of the electric wire (5) and the main body (71) and that rotatably opens and closes the lid (72) about an axis in a transverse direction (left-right direction) that intersects both the longitudinal direction (front-rear direction) of the electric wire (5) and the protruding direction (up-down direction) of the locking piece (622). The cover portion (72) has a first locking portion (721) that is located on a side (rear side) farther from the end in the longitudinal direction (front-rear direction) than the locking piece (622) in the closed position and that locks with the locking piece (622). Cable assembly (4).

[0046] According to the cable assembly (4) having the configuration [1] above, when the cover (72) is rotated to the open position, the inner terminal (6) is allowed to be inserted into the terminal accommodating chamber (711), and when the cover (72) is rotated to the closed position, the first locking portion (721) of the cover (72) locks with the locking piece (622) of the inner terminal (6). This increases the wire retention force and improves the connection reliability.

[0047] [2] In the cable assembly (4) according to [1], The outer terminal (8) is cylindrical and has an accommodating portion (81) for accommodating the inner housing (7) and a crimping portion (82) for crimping onto the electric wire (5). The storage portion (81) is provided to cover the lid portion (72). Cable assembly (4).

[0048] According to the cable assembly (4) having the configuration [2] above, when the electric wire (5) is pulled toward the side (rear) away from the end in the longitudinal direction (front-rear direction), the lid portion (72) tries to open, but the lid portion (72) is covered by the housing portion (81), so the opening of the lid portion (72) can be prevented. This further increases the electric wire holding force and improves the connection reliability.

[0049] [3] In the cable assembly (4) according to [1], The main body (71) is provided with a plurality of terminal accommodating chambers (711, 711) arranged in the intersecting direction (left-right direction), The main body (71) has a locking wall (712) standing in the protruding direction (vertical direction) between the terminal accommodating chambers (711) adjacent to each other in the transverse direction (horizontal direction), The cover portion (72) has a clamping portion (723) at an end portion on the side (rear side) away from the terminal in the longitudinal direction (front-rear direction) that clamps both sides of the locking wall (712) in the transverse direction (left-right direction), The locking wall (712) is provided with second locking portions (712A, 712A) on both sides in the crossing direction (left and right direction), The clamping portion (723) is provided with third locking portions (723A, 723A) that lock onto the second locking portions (712A, 712A) in the protruding direction (vertical direction), Cable assembly (4).

[0050] According to the cable assembly (4) having the configuration [3] above, the cover (72) and the main body (71) are engaged in the protruding direction (vertical direction), which further enhances the wire retention force and improves the connection reliability.

[0051] [4] In the cable assembly (4) according to [1], The inner terminal (6) has a bottom plate portion (621) having an arc-shaped cross section, The locking pieces (622) are erected on both sides of the bottom plate portion (621) in the cross direction (left and right direction), and are arranged so that the distance between them becomes narrower toward the tip, The main body (71) is provided with a semicircular groove (711A-1) into which the bottom plate (621) is fitted, The cover portion (72) is provided with a recess (722) having a semicircular cross section that receives the locking piece (622) and mates with the groove portion (711A-1) to form the terminal accommodating chamber (711), The diameter of the recess (722) is set larger than the diameter of the groove (711A-1). Cable assembly (4).

[0052] According to the cable assembly (4) having the configuration [4] above, the diameter of the recess (722) is set larger than the diameter of the groove (711A-1). As a result, even when the inner terminal (6) rotates, the locking piece (622) does not interfere with the cover (72), and the locking piece (622) of the inner terminal (6) does not get caught in the cover (72), improving workability. [Explanation of symbols]

[0053] 4 Cable Assembly 5 Twisted pair cable (electric wire) 6 female terminal (inner terminal) 7 Inner housing 8 outer terminal 71 Main body 72 Lid 73 Hinge part 81 Storage unit 82 Crimping part 621 Bottom plate part 622 Locking piece 711 Terminal housing 712 Retaining Wall 712A Locking protrusion (second locking part) 711A-1 First groove (groove) 721 Locking protrusion (first locking part) 722 recess 723 Clamping part 723A Locking protrusion (3rd locking part)

Claims

1. Electric wires and an inner terminal attached to an end of the electric wire; an inner housing that accommodates the inner terminal; an outer terminal that accommodates the inner housing; A cable assembly, comprising: The inner terminal has a locking piece that protrudes in a radial direction of the electric wire, the inner housing has a main body portion provided with a terminal accommodating chamber for accommodating the inner terminal, a lid portion for opening and closing the terminal accommodating chamber, and a hinge portion provided in the lid portion between the end portion of the electric wire on the terminal side in the longitudinal direction and the main body portion, the hinge portion rotatably opening and closing the lid portion about an axis in a direction intersecting both the longitudinal direction of the electric wire and the protruding direction of the locking piece, the cover portion has a first locking portion that is located farther from the end in the longitudinal direction than the locking piece in the closed position and that locks with the locking piece; Cable assembly.

2. 2. The cable assembly according to claim 1, The outer terminal is cylindrical and has an accommodating portion that accommodates the inner housing and a crimping portion that is crimped to the electric wire, The storage section is provided to cover the lid section. Cable assembly.

3. 2. The cable assembly according to claim 1, The main body portion has a plurality of the terminal accommodating chambers arranged in the intersecting direction, the main body portion has a locking wall that stands in the protruding direction between the terminal accommodating chambers adjacent in the crossing direction, the cover portion has a clamping portion at an end portion away from the terminal in the longitudinal direction, the clamping portion clamping both sides of the locking wall in the intersecting direction, The locking wall is provided with a second locking portion on each of both side surfaces in the cross direction, The clamping portion is provided with a third locking portion that locks with the second locking portion in the protruding direction. Cable assembly.

4. 2. The cable assembly according to claim 1, The inner terminal has a bottom plate portion having an arc-shaped cross section, The locking pieces are provided upright on both sides of the bottom plate portion in the intersecting direction, and the distance between the locking pieces becomes narrower toward the tip, The main body portion is provided with a semicircular groove portion into which the bottom plate portion is fitted, The cover portion is provided with a recess having a semicircular cross section that accommodates the locking piece and that combines with the groove portion to form the terminal accommodating chamber, The diameter of the recess is set larger than the diameter of the groove. Cable assembly.

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