Cable connection structure and cable with connector

Abstract

To provide a cable connection structure and a cable with a connector capable of miniaturization.SOLUTION: A cable connection structure 1 includes two cables 2 with two connectors 5 attached to the ends of cables 3. The connector 5 has a housing 51 having a first portion 511 into which the end of the cable 3 is inserted and a second portion 512 formed on the outer peripheral side of the first portion 511. The two cables 2 with connectors are electrically connected to each other by fitting the second portions 512 of the two cables 2 with two connectors to each other in the axial direction X of the cable 3.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a cable connection structure and a cable with a connector. [Background technology]

[0002] FIG. 4 of Patent Document 1 discloses a high-voltage equipment system in which two high-voltage cables installed on the roof of a railway vehicle are connected via a direct joint device. The high-voltage equipment system described in Patent Document 1 includes two high-voltage cables, two cable connector portions into which the respective high-voltage cables are inserted, and a direct joint device that electrically connects the two cable connector portions. The cable connector portions have a base tubular portion into which the high-voltage cables are inserted and a fitting tubular portion formed perpendicular to the base tubular portion, and are formed generally in a T-shape overall. The direct joint device also has a base portion and two joint connector portions protruding from one side of the base portion. The two cable connector portions are fitted into different joint connector portions in the extension direction of the fitting tubular portion (i.e., the direction perpendicular to the high-voltage cables). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-147635 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the high-voltage equipment system described in Patent Document 1 tends to become large in size in the direction in which the two cable connector portions and the direct joint device are arranged, and there is room for improvement in terms of miniaturization.

[0005] The present invention has been made in view of the above circumstances, and has an object to provide a cable connection structure and a cable with a connector that can be made smaller. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the present invention provides a cable connection structure comprising two connectorized cables with connectors attached to the ends of the cables, the connectors having a housing with a first portion into which the ends of the cables are inserted and a second portion formed on the outer periphery of the first portion, and the second portions of the two connectorized cables are fitted together in the axial direction of the cables, thereby electrically connecting the two connectorized cables to each other.

[0007] In addition, in order to achieve the above-mentioned object, the present invention provides a connector-equipped cable comprising a cable and a connector attached to the end of the cable, the connector having a housing having a first portion into which the end of the cable is inserted and a tubular second portion formed along the outer periphery of the first portion. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a cable connection structure and a cable with a connector that can be made smaller. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a plan view of a connectorized cable according to a first embodiment. [Figure 2] 1 is a plan view of a cable connection structure according to a first embodiment. [Figure 3] 1 is a cross-sectional view of a cable connection structure according to a first embodiment. [Figure 4] FIG. 4 is an enlarged view of a part of FIG. 3. [Figure 5] 1 is an exploded plan view of a cable connection structure according to a first embodiment. [Figure 6] 1 is an exploded cross-sectional view of a cable connection structure according to a first embodiment. [Figure 7] FIG. 2 is a front view of a connecting conductor according to the first embodiment. [Figure 8] FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 7. [Figure 9] FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 7. [Figure 10] 1 is a plan view of a railway vehicle equipped with a cable connection structure according to a first embodiment. [Figure 11] FIG. 10 is a plan view of a connectorized cable according to a modified example of the first embodiment. [Figure 12] FIG. 10 is a front view of a connecting conductor according to a second embodiment. [Figure 13] FIG. 13 is a cross-sectional view taken along the line XIII-XIII in FIG. 12. [Figure 14] FIG. 16 is a cross-sectional view taken along the line XVI-XVI in FIG. [Figure 15] FIG. 10 is a front view of a connecting conductor in a modified example of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] [First embodiment] A first embodiment of the present invention will be described with reference to Figures 1 to 11. The embodiment described below is shown as a preferred specific example for carrying out the present invention, and although various technically preferable technical matters are specifically exemplified, the technical scope of the present invention is not limited to this specific embodiment.

[0011] Fig. 1 is a plan view of a connectorized cable 2 in this embodiment. Fig. 2 is a plan view of a cable connection structure 1 in this embodiment. Fig. 3 is a cross-sectional view of the cable connection structure 1 in this embodiment. Fig. 4 is an enlarged view of a portion of Fig. 3. Fig. 5 is an exploded plan view of the cable connection structure 1 in this embodiment. Fig. 6 is an exploded cross-sectional view of the cable connection structure 1 in this embodiment.

[0012] 2 to 6, the cable connection structure 1 includes two connectorized cables 2, each having a connector 5 attached to the end of the cable 3, and a relay member 6 that mechanically and electrically relays the two connectorized cables 2. Hereinafter, the direction in which the central axis of the cable 3 extends will be referred to as the axial direction X.

[0013] The two connectorized cables 2 are arranged symmetrically with respect to each other in the axial direction X and have the same configuration. Hereinafter, the description may focus on one of the two connectorized cables 2, but unless otherwise specified, the other connectorized cable 2 will also have the same configuration.

[0014] The connectorized cable 2 mainly includes a cable 3, a cable terminal 4 fixed to the cable center conductor 31 of the cable 3, and a connector 5 into which an end of the cable 3 is inserted. As shown in FIG. 1 , in this embodiment, the connectorized cable 2 is provided with a pair of connectors 5 at both ends of the cable 3. The pair of connectors 5 provided on the connectorized cable 2 have the same configuration. When the cable 3 is stretched straight without twisting, the pair of connectors 5 are arranged so that second portions 512, described below, face each other in the axial direction X. Note that, as shown in FIG. 11 , when the cable 3 is stretched straight without twisting, the sides on which the second portions 512 are located relative to the first portion 511, described below, may be opposite each other in the pair of connectors 5. Furthermore, the connectorized cable 2 is only required to have a connector 5 provided on at least one end of the cable 3. Furthermore, the pair of connectors 5 provided on the connectorized cable 2 do not need to be the same. For example, the connector 5 described in this embodiment may be provided at one end of the connectorized cable 2, and a connector having a different shape from the connector 5 described in this embodiment may be provided at the other end of the connectorized cable 2.

[0015] As shown in Figures 3 and 4, the cable 3 includes, from the center, a cable central conductor 31, a cable internal semiconductive layer (not shown), a cable insulator 32, a cable external semiconductive layer 33, a cable shield layer (not shown), and a cable sheath 34. The cable central conductor 31 is made of a stranded wire. The cable internal semiconductive layer and the cable external semiconductive layer 33 are made of a polymer material that is made conductive by dispersing conductive powder, and serve to reduce electric field concentration. The cable shield layer is formed, for example, by winding a wire spirally around the cable external semiconductive layer 33, and is connected to ground potential when the cable connection structure 1 is in use. The cable sheath 34 is made, for example, of electrically insulating rubber, and constitutes the outermost layer of the cable 3. Hereinafter, one side in the axial direction X, where the cable 3 is pulled out from the housing 51, will be referred to as the axial base end side, and the opposite side will be referred to as the axial tip side. 2 and 3, for the right-side connectorized cable 2, the axial tip side is on the left side of the page and the axial base side is on the right side of the page, whereas for the left-side connectorized cable 2, the axial tip side is on the right side of the page and the axial base side is on the left side of the page. The cable 3 is step-stripped to expose the cable core conductor 31, cable insulator 32, and cable outer semiconductive layer 33, in that order from the axial tip side. A cable terminal 4 is fixed to the exposed cable core conductor 31 of the cable 3.

[0016] The cable terminal 4 is made of a substantially cylindrical conductor extending in the axial direction X. As shown in FIGS. 4 and 6 , the cable terminal 4 has a crimping hole 41 that opens to an end face on the base end side in the axial direction and an internally threaded hole 42 that opens to an end face on the tip end side in the axial direction. The cable terminal 4 is inserted into the crimping hole 41 and crimped toward the cable core conductor 31, thereby mechanically and electrically connecting the cable core conductor 31 and the cable terminal 4. As shown in FIG. 4 , a bolt B1 is threaded into the internally threaded hole 42 formed in the cable terminal 4 to mechanically and electrically connect the cable terminal 4 to a connecting conductor 52 (described later). The cable insulator 32 and the cable core conductor 31 exposed in the cable 3, and the cable terminal 4 are inserted into a housing 51 of the connector 5.

[0017] As shown in Figures 4 and 6, the connector 5 comprises a housing 51, a connecting conductor 52 held in the housing 51, a first plug member 53 and a first cover 54 that close an opening at the axial tip end side of a first portion 511 of the housing 51 described below, and a second plug member 55 and a second cover 56 that close an opening at the axial base end side of a second portion 512 of the housing 51 described below.

[0018] The housing 51 includes an insulator 51a, a first semiconductive layer 51b, a second semiconductive layer 51c, a tubular member 51d, and a protective cover 51e, which are integrally molded with one another. The housing 51 can be manufactured by insert molding, in which the components constituting the housing 51 (i.e., the first semiconductive layer 51b, the second semiconductive layer 51c, the tubular member 51d, and the protective cover 51e) and the connecting conductor 52 are placed in a mold for forming the insulator 51a, and a molten resin constituting the insulator 51a is injected into the mold and cured.

[0019] The insulator 51a is made of a polymer-based material such as silicone rubber, ethylene propylene rubber (EPM), or ethylene propylene diene rubber (EPDM). The first and second semiconductive layers 51b and 51c are each made of a polymer-based material imparted with conductivity by dispersing conductive powder. As shown in FIG. 4, the first semiconductive layer 51b is disposed around the connecting conductor 52 and the end of the cable terminal 4 and the cable 3, thereby reducing electric field concentration around the connecting conductor 52, the cable terminal 4, and the end of the cable 3. The second semiconductive layer 51c is disposed around the cable insulator 32 and the cable outer semiconductive layer 33, thereby reducing electric field concentration around the cable insulator 32. The tubular member 51d is provided at the axially proximal end of the first portion 511 (described later) of the housing 51 and forms an insertion opening for inserting the cable 3 into the housing 51. The space between the tubular member 51d and the cable 3 is sealed by a sealing portion 7 to provide a watertight seal. The tubular member 51d is made of a material that has good adhesion to the sealing portion 7. For example, the sealing portion 7 is formed by wrapping polyethylene tape, epoxy tape, or the like with an adhesive, and the tubular member 51d is made of a metal such as brass or an aluminum alloy. The protective cover 51e is made of a metal such as brass or an aluminum alloy. The protective cover 51e forms the outer surface of the connector 5 and protects the connector 5.

[0020] The housing 51 comprises a cylindrical first portion 511 into which the end of the cable 3 is inserted, a cylindrical second portion 512 formed parallel to the first portion 511 on the outer circumferential side of the first portion 511, and a third portion 513 connecting the first portion 511 and the second portion 512 to each other.

[0021] Each of the first portion 511 and the second portion 512 is formed in a cylindrical shape that is long in the axial direction X. The first portion 511 and the second portion 512 are formed side by side so that their central axes are approximately parallel to each other. In the axial direction X, the second portion 512 is formed to be shorter than the first portion 511. As shown in FIG. 3 , two connector-attached cables 2 are fitted together in the axial direction X at their respective second portions 512 via a relay member 6. To facilitate the fitting of the second portions 512, the end portion of the second portion 512 on the axial tip side protrudes further toward the axial tip side than the end portion of the first portion 511 on the axial tip side. The third portion 513 connects the first portion 511 and the second portion 512 at a position closer to the axial tip side than the central position of the first portion 511 in the axial direction X. Hereinafter, the direction perpendicular to the axial direction X and in which the first portion 511 and the second portion 512 are arranged will be referred to as the arrangement direction Y. The connecting conductor 52 is provided so as to penetrate the third portion 513 in the arrangement direction Y.

[0022] FIG. 7 is a front view of the connecting conductor 52 in this embodiment. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7. FIG. 9 is a cross-sectional view taken along line VXI-VXI in FIG. 7. The connecting conductor 52 is made of a material with high conductivity, such as a copper alloy. The connecting conductor 52 is formed in a plate shape that is long in the arrangement direction Y and has a thickness in the axial direction X. Both surfaces of the connecting conductor 52 in the axial direction X are formed in a flat shape perpendicular to the axial direction X. The outer peripheral surface 52a of the connecting conductor 52 is curved in a cross-sectional arc shape, and approximately the entire outer peripheral surface 52a is in contact with the first semiconductive layer 51b.

[0023] 4 and 6, the connecting conductor 52 has an embedded portion 521 embedded in the first semiconductive layer 51b, a cable connecting portion 522 exposed inside the first portion 511, and a relay member connecting portion 523 exposed inside the second portion 512. The cable connecting portion 522 and the relay member connecting portion 523 are formed with bolt insertion holes 522a and 523a, respectively, that penetrate in the axial direction X. The cable connecting portion 522 is fastened to the cable terminal 4 using a bolt B1, and the relay member connecting portion 523 is fastened to the relay member 6 using a bolt B2.

[0024] 4, the cable insulator 32 and cable central conductor 31 exposed in the cable 3, and the cable terminal 4 are inserted into the axial base end side of the cable connection portion 522 inside the first section 511. In a free state (i.e., a state in which the cable 3 is not inserted), the inner diameter of the section of the first section 511 in which the cable insulator 32 is inserted is smaller than the outer diameter of the cable insulator 32 in a free state (i.e., a state in which the cable 3 is not inserted into the first section 511). When the cable 3 is inserted into the first section 511, the cable insulator 32 is inserted into the first section 511 while widening the inner diameter of the first section 511.

[0025] When the cable 3 is inserted into the first section 511, the first semiconductive layer 51b is in contact with the end of the cable insulator 32 on the axially distal side over the entire circumference, and the second semiconductive layer 51c is in contact with the cable insulator 32 and the cable outer semiconductive layer 33 over the entire circumference at a position axially closer to the proximal end than the first semiconductive layer 51b. When the cable 3 is inserted inside the first section 511, the bolt B1 is inserted into the bolt insertion hole 522a of the cable connecting portion 522 and screwed into the female threaded hole 42 of the cable terminal 4, thereby mechanically and electrically connecting the cable connecting portion 522 and the cable terminal 4.

[0026] The bolt B1 has a male thread B1b extending from a head B1a to the tip end in the axial direction. The male thread B1b is screwed into the first plug member 53.

[0027] The first plug member 53 includes a metal nut member 531 having a female threaded hole 531a into which the male threaded portion B1b is threaded, a metal fitted member 532 having a square hole 532a into which the drive angle of a socket wrench (not shown) is fitted, and a molded resin 533 that integrates the nut member 531 and the fitted member 532. The first plug member 53 is fixed to the bolt B1 by threading the male threaded portion B1b of the bolt B1 into the female threaded hole 531a of the nut member 531 using a socket wrench. The first plug member 53 closes an opening on the axial tip side of the first portion 511. When the opening on the axial tip side of the first portion 511 is closed by the first plug member 53, the end on the axial tip side of the first portion 511 is covered with a first cover 54 made of a polymer material (such as silicone rubber, ethylene propylene rubber (EPM), or ethylene propylene diene rubber (EPDM)).

[0028] The relay member 6 includes a relay conductor portion 61 that electrically connects the relay member connection portions 523 of the two connector-attached cables 2, and an electrically insulating relay insulator 62 that covers the outer periphery of the relay conductor portion 61. The relay conductor portion 61 is formed long in the axial direction X, and both ends of the relay conductor portion 61 in the axial direction X are exposed from the relay insulator 62. Female threaded holes 611 for threading bolts B2 are formed at both ends of the relay conductor portion 61 in the axial direction X. The relay insulator 62 is made of an electrically insulating resin and covers the entire periphery of the relay conductor portion 61. The relay insulator 62 includes an annular ring portion 621 in the center in the axial direction X, and tapered portions 622 on both sides of the annular ring portion 621 in the axial direction X, the outer diameter of which decreases with increasing distance from the annular ring portion 621. The annular ring portion 621 is formed to protrude radially outward beyond the tapered portions 622.

[0029] 4 , a portion of the relay member 6 where the tapered portion 622 is formed is inserted into the second portion 512 on the axial tip side of the relay member connecting portion 523. A step portion 512b having an inner diameter larger than that of a portion adjacent to the axial base end side is formed at an end portion of the second portion 512 on the axial tip side, and when the tapered portion 622 is inserted into the second portion 512, the annular portion 621 of the relay member 6 is fitted into the step portion 512b. When the portion of the relay member 6 where the tapered portion 622 is formed is inserted into the second portion 512, the bolt B2 is inserted into the bolt insertion hole 523a of the relay member connecting portion 523 and screwed into the female threaded hole 611 of the relay conductor portion 61, thereby mechanically and electrically connecting the relay member connecting portion 523 and the relay conductor portion 61. By connecting the relay member 6 to the two second portions 512, the second portions 512 of the two connectorized cables 2 are fitted together in the axial direction X via the relay member 6, and the two connectorized cables 2 are electrically connected to each other.

[0030] Like bolt B1, bolt B2 has a male thread portion B2b extending from head B2a toward the axial tip end. Male thread portion B2b is threadedly engaged with second plug member 55. Second plug member 55 has the same configuration as first plug member 53, and therefore a redundant description will be omitted.

[0031] 2 and 3, when two connectorized cables 2 and the relay member 6 are connected, the second portions 512 of the two connectorized cables 2 abut against each other in the axial direction X, and the relay member 6 is housed inside the two second portions 512. Note that this is not limited to this, and a gap may be formed between the two second portions 512 in the axial direction X, and a part of the relay member 6 (for example, the annular portion 621) may be exposed from the gap. Furthermore, the two first portions 511 are arranged in positions overlapping each other in the axial direction X, and the two second portions 512 are arranged in positions overlapping each other in the axial direction X. When viewed from the axial direction X, the central axes of the two first portions 511 are formed at approximately the same position as each other, and the central axes of the two second portions 512 are formed at approximately the same position as each other.

[0032] FIG. 10 is a plan view of a railway vehicle 10 equipped with a cable connection structure 1 according to this embodiment. The cable connection structure 1, which includes two connector-equipped cables 2 and a relay member 6, can be disposed on the roof 101 of the railway vehicle 10, for example, and used to mechanically and electrically connect two cables 3. When the cable connection structure 1 is installed on the roof 101 of the railway vehicle 10, the cable connection structure 1 is fixed to the roof 101 in an orientation in which both the axial direction X and the alignment direction Y are horizontal. This prevents the entire cable connection structure 1 from significantly protruding vertically upward from the roof 101, thereby reducing air resistance when the railway vehicle 10 is traveling. The cable connection structure 1 is fixed to the roof 101, for example, by using a fixing bracket such as a U-shaped saddle band to press the cables 3 against the roof 101.

[0033] (Functions and Effects of the First Embodiment) In the cable connection structure 1 of this embodiment, the connector 5 has a housing 51 having a first portion 511 into which an end of the cable 3 is inserted and a second portion 512 formed on the outer periphery of the first portion 511. Furthermore, the second portions 512 of the two connectorized cables 2 are fitted together in the axial direction X, thereby electrically connecting the two connectorized cables 2 to each other. This makes it possible to reduce the size of the cable connection structure 1 in the alignment direction Y. By comparison, in the configuration described in Patent Document 1 (JP 2012-147635 A), two high-voltage cables are connected via a direct joint device arranged alongside the cable connector portion in a direction perpendicular to the axial direction X, which tends to lead to an increase in size in the direction perpendicular to the axial direction X in which the cable connector portion and the direct joint device are aligned.

[0034] Furthermore, the end portion of the second portion 512 on the axial tip side protrudes further toward the tip side than the end portion of the first portion 511 on the axial tip side. Therefore, when fitting the two second portions 512 in the axial direction X, it is possible to prevent the first portions 511 from interfering with each other, for example, and thereby reduce workability.

[0035] Furthermore, the relay member 6 is inserted into the two second parts 512, and connects the two relay member connecting portions 523. Therefore, the mechanical and electrical connection between the two second parts 512 can be achieved with a simple configuration.

[0036] Furthermore, the first portions 511 of the two connectorized cables 2 are arranged in positions that overlap with each other in the axial direction X, and the second portions 512 of the two connectorized cables 2 are arranged in positions that overlap with each other in the axial direction X. This allows the entire cable connection structure 1 to be made even more compact.

[0037] Furthermore, in this embodiment, the relay member 6 and the two connectorized cables 2 are fastened in the axial direction X using the bolt B2. Therefore, the space on the axial base end side of the second part 512 serves as a work space for fastening the relay member 6 and the two connectorized cables 2. Therefore, there is no need to ensure work space in an area adjacent to the connectorized cables 2 in a direction perpendicular to the axial direction X. Therefore, even if the space on the roof 101 of the railway vehicle 10 is narrow, for example, it is possible to place the cable connection structure 1 on the roof 101 and perform the work of fastening the relay member 6 and the two connectorized cables 2.

[0038] As described above, according to this embodiment, it is possible to provide a cable connection structure and a cable with a connector that can be made smaller.

[0039] [Second embodiment] FIG. 12 is a front view of a connecting conductor 52 in this embodiment. FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. 12. FIG. 14 is a cross-sectional view taken along line XVI-XVI in FIG. 12. This embodiment has the same basic structure as the first embodiment, but the configuration of the connecting conductor 52 is modified. As shown in FIG. 14, the connecting conductor 52 in this embodiment has a cable connecting portion 522 and a relay member connecting portion 523 each formed in a plate shape having a thickness in the axial direction X, and as shown in FIG. 13, the embedded portion 521 has a substantially circular cross section. Each of the cable connecting portion 522 and the relay member connecting portion 523 has flat surfaces on both sides in the axial direction X, and an outer peripheral surface 52a curved in an arc-like cross section. The embedded portion 521 is formed so that its diameter increases toward the center in the arrangement direction Y. That is, the cross-sectional shape of the embedded portion 521 varies depending on the position in the arrangement direction Y.

[0040] Other configurations of this embodiment are the same as those of the first embodiment. It should be noted that, among the symbols used in the second and subsequent embodiments, the same symbols as those used in the previously described embodiments represent the same components, etc. as those in the previously described embodiments, unless otherwise specified.

[0041] (Functions and Effects of the Second Embodiment) In this embodiment, the cross-sectional shape of the embedded portion 521 varies depending on the position in the arrangement direction Y. This makes it easy to ensure close contact between the embedded portion 521 and the first semi-conductive layer 51b, and prevents misalignment between the embedded portion 521 and the first semi-conductive layer 51b. Furthermore, each of the cable connecting portion 522 and the relay member connecting portion 523 is formed in a plate shape having a thickness in the axial direction X, and both surfaces in the axial direction X are formed flat. This makes it easy to ensure electrical connectivity between the cable connecting portion 522 and the cable terminal 4, and between the relay member connecting portion 523 and the relay member 6. In addition, the second embodiment has the same effects as the first embodiment.

[0042] 15, the embedded portion 521 may be formed so that the diameter decreases toward the center in the arrangement direction Y. In this case as well, it is possible to suppress misalignment between the embedded portion 521 and the first semiconductive layer 51b.

[0043] (Summary of the embodiment) Next, the technical ideas grasped from the above-described embodiments will be described by using the reference numerals and the like in the embodiments. However, the reference numerals and the like in the following description do not limit the components in the claims to the members and the like specifically shown in the embodiments.

[0044] [1] A cable connection structure (1) comprising two connector-equipped cables (2) each having a connector (5) attached to the end of a cable (3), the connector (5) having a housing (51) having a first portion (511) into which the end of the cable (3) is inserted and a second portion (512) formed on the outer periphery of the first portion (511), and the second portions (512) of the two connector-equipped cables (2) are fitted together in the axial direction (X) of the cable (3), thereby electrically connecting the two connector-equipped cables (2) to each other.

[0045] [2] In the cable with connector (2), when the side opposite to the side where the cable (3) is pulled out from the housing (51) is the tip side, the tip end of the second part (512) protrudes further towards the tip side than the tip end of the first part (511), in the cable connection structure (1) described in [1].

[0046] [3] The cable connection structure (1) according to [1] or [2], wherein the two second portions (512) are fitted to each other in the axial direction (X) via a relay member (6), the second portion (512) is formed in a cylindrical shape that opens toward the side opposite to the side where the cable (3) is pulled out from the housing (51), the housing (51) holds a connection conductor (52) having a cable connection portion (522) exposed in the first portion (511) and connected to the cable (3) and a relay member connection portion (523) exposed in the second portion (512), and the relay member (6) is inserted inside each of the two second portions (512) and connects the two relay member connection portions (523) to each other.

[0047] [4] The cable connection structure (1) described in any one of [1] to [3], wherein the first portions (511) of the two connectorized cables (2) are arranged in a position where they overlap in the axial direction (X), and the second portions (512) of the two connectorized cables (2) are arranged in a position where they overlap in the axial direction (X).

[0048] [5] A connector-equipped cable (1) comprising a cable (3) and a connector (5) attached to the end of the cable (3), the connector (5) having a housing (51) having a first portion (511) into which the end of the cable (3) is inserted, and a tubular second portion (512) formed along the outer periphery of the first portion (511).

[0049] [6] The connector-equipped cable (1) described in [5], wherein when the side opposite to the side where the cable (3) is pulled out from the housing (51) is the tip side, the tip end of the second part (512) protrudes further toward the tip side than the tip end of the first part (511).

[0050] [7] The connector-equipped cable (1) described in [5] or [6], wherein the housing (51) holds a connecting conductor having a cable connection portion (522) exposed in the first portion (511) and connected to the cable (3) and a portion (523) exposed in the second portion (512).

[0051] Although the embodiments of the present invention have been described above, the invention according to the claims is not limited to the above-described embodiments. It should be noted that not all of the combinations of features described in the embodiments are necessarily essential to the means for solving the problems of the invention. Furthermore, the present invention can be appropriately modified and implemented within the scope of its spirit. [Explanation of symbols]

[0052] 1... Cable connection structure 2... Cable with connector 3...Cable 5...Connector 51...Housing 511...First part 512...Second portion 52...Connecting conductor 522... Cable connection part 523... Relay member connection part 6...Relay member X...Axial direction

Claims

1. two connectorized cables each having a connector attached to an end of the cable; the connector has a housing having a first portion into which the end of the cable is inserted and a second portion formed on an outer circumferential side of the first portion, a cable connection structure in which the second portions of the two connectorized cables are fitted together in an axial direction of the cables, thereby electrically connecting the two connectorized cables to each other, In the connector-attached cable, when the side opposite to the side where the cable is pulled out from the housing is defined as the tip side, the tip side end of the second part protrudes further toward the tip side than the tip side end of the first part. Cable connection structure.

2. The two second portions are fitted to each other in the axial direction via a relay member, the second portion is formed in a cylindrical shape that opens toward the side opposite to the side where the cable is pulled out from the housing, the housing holds a connection conductor having a cable connection portion exposed in the first portion and connected to the cable, and a relay member connection portion exposed in the second portion, The relay member is inserted into the two second portions and connects the two relay member connection portions to each other. The cable connection structure according to claim 1 .

3. the first portions of the two connector-attached cables are arranged to overlap each other in the axial direction, the second portions of the two connector-attached cables are arranged to overlap each other in the axial direction; The cable connection structure according to claim 1 or 2.

4. Cable and a first connector attached to one end of the cable; the first connector includes a first housing having a first first portion into which the end of the cable is inserted, and a cylindrical first second portion formed along the first first portion on the outer circumferential side of the first first portion; a second connector attached to the other end of the cable; the second connector has a second housing having a second first portion into which the end of the cable is inserted, and a cylindrical second second portion formed along the second first portion on the outer circumferential side of the second first portion, When the side opposite to the side where the cable is pulled out from the first housing is defined as a tip side, an end portion of the tip side of the first second part protrudes further toward the tip side than an end portion of the tip side of the first first part, When the side opposite to the side where the cable is pulled out from the second housing is defined as a tip side, the tip side end of the second second part protrudes further to the tip side than the tip side end of the second first part. Cable with connector.

5. the first housing holds a connecting conductor having a cable connecting portion exposed in the first portion and connected to the cable, and a portion exposed in the first second portion. The connectorized cable according to claim 4.

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