JP2012135167A - Shield cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the operation, in which a shield cable is mechanically fixed to an apparatus side connection part and a shield part is electrically connected with the apparatus side connection part, to be conducted easily.SOLUTION: A shield cable 20 connects with an apparatus side connection part 12 having an insertion hole part 13. The shield cable 20 has electric wires 22, a shield part 24 covering outer peripheries of the electric wires 22, an inner side cylinder member 32 attached to the outer peripheral side of end parts of the electric wires 22, and an elastic engagement part 44 which engages with an inner peripheral surface of the insertion hole part 13. The shield cable 20 further includes an outer side cylinder member 40 attached to an outer periphery of the inner side cylinder member 32 so as to sandwich the shield part 24 with the inner side cylinder member 32.

Description

  The present invention relates to a technique for connecting an end of a shielded cable to a device.

  As high-voltage wiring for automobiles, a shielded cable in which the outer periphery of an electric wire is covered with a shield part such as a braid is used. Patent Documents 1 and 2 disclose a technique for connecting the end of such a shielded cable to a device.

  Patent Document 1 discloses a substantially cylindrical housing through which a shielded electric wire is inserted, and a metal shell that is attached to the housing in a state where the braided end of the shielded electric wire protruding from the housing is folded back to the outer peripheral surface of the housing. The terminal processing structure of the shielded electric wire provided with these is disclosed. In this terminal processing structure, the braid is grounded via the metal shell and the motor case by inserting the metal shell into the electric wire insertion opening of the motor case. In this state, the flange portion protruding from the housing is attached to the motor case with a bolt, so that the end of the shielded wire is mechanically fixed.

  Patent Document 2 discloses a shielded wire attachment device in which a stopper member and a retaining member are attached to a shielded wire. A support cylinder is externally fitted to the end of the sheath of the shielded electric wire. The shield layer is folded on the support cylinder, and a retaining member is fitted and crimped so as to cover the folded portion of the shield layer. In this shielded wire mounting device, when the retaining member is inserted into the shield case mounting hole, the stopper member and the resilient retaining piece of the retaining member abut against the hole edge of the mounting hole, thereby restricting the axial movement of the shielded wire. Is done. Further, in this state, the elastic contact portion at the tip of the elastic retaining piece comes into contact with the inner peripheral surface of the mounting hole, so that the shield layer of the shielded electric wire is connected to the shield case in a conductive manner.

Japanese Patent Laid-Open No. 10-12912 JP 2000-175341 A

  However, in the technique disclosed in Patent Document 1, since the flange portion protruding from the housing is configured to be attached to the motor case with a bolt, fixing work with the bolt is required in the assembly process to the device. Moreover, since the bolt fixing operation is a reliable bolt tightening operation, torque management and the like when tightening the bolt in the process are required, which is a complicated operation.

  Moreover, in the technique disclosed in Patent Document 2, since the retaining member is fixed by crimping, a crimping operation using a crimping die or the like is required. In addition, in the caulking work, it is necessary to manage the caulking amount, so that the work is also complicated.

  Then, this invention aims at enabling it to perform easily the operation | work which fixes a shielded cable mechanically to an apparatus side connection part, and electrically connects the shield part to an apparatus side connection part. .

  In order to solve the above-described problem, a first aspect is a shielded cable connected to a device-side connecting portion having an insertion hole, and includes an electric wire, a shield portion that covers the outer periphery of the electric wire, and an end of the electric wire. An inner cylindrical member mounted on the outer peripheral side of the portion and an elastic locking portion that can be locked and fixed to the inner peripheral surface of the insertion hole, and the shield portion is sandwiched and fixed between the inner cylindrical member And an outer cylinder member mounted on the outer periphery of the inner cylinder member.

  A 2nd aspect is a shielded cable which concerns on a 1st aspect, Comprising: The said inner side cylinder member is mounted | worn so that the outer periphery of the said shield part may be covered by the edge part of the said electric wire.

  A 3rd aspect is a shielded cable which concerns on the 1st or 2nd aspect, Comprising: The said shield part is return | folded by the front-end | tip part of the said inner side cylinder member, At least of the inner peripheral side part and the outer peripheral side part of the return | turnback part One is pinched and fixed between the inner cylinder member and the outer cylinder member.

  A fourth aspect is a shielded cable according to the third aspect, wherein the outer cylindrical member is formed with the elastic locking portion and is disposed on the outer peripheral side of the inner cylindrical member; It has a fitting part fitted in the inner peripheral part of the front-end | tip part of the said inner side cylinder member, and the said shield part is pinched and fixed between the inner peripheral part of the front-end | tip part of the said inner side cylinder member, and the said fitting part.

  A fifth aspect is a shielded cable according to any one of the first to fourth aspects, and a plurality of the elastic locking portions are formed around the outer periphery of the outer cylindrical member.

  A sixth aspect is a shielded cable according to any one of the first to fifth aspects, and a waterproof plug that can be press-fitted into the insertion hole is externally fitted to an end of the electric wire.

  According to the 1st aspect, if an outer side cylinder member is inserted in the insertion hole part of an apparatus side connection part, an elastic locking part will be latched and fixed to the internal peripheral surface of an insertion hole part. For this reason, the shield part is sandwiched between the inner cylinder member and the outer cylinder member, and the device-side connection part via the latching and fixing structure between the elastic locking part and the inner peripheral surface of the insertion hole part. It is mechanically fixed and also electrically connected. For this reason, it is possible to easily fix the shielded cable mechanically to the device-side connection portion and electrically connect the shield portion to the device-side connection portion.

  According to the 2nd aspect, a shield part can be protected by covering a shield part with an inner side cylinder member.

  According to the third aspect, since at least one of the inner peripheral portion and the outer peripheral portion of the folded portion of the shield portion is sandwiched and fixed between the inner cylindrical member and the outer cylindrical member, the sandwich fixing is performed. It can be done easily.

  According to the fourth aspect, the influence of the elastic deformation of the elastic locking portion is suppressed, and the shield portion is stably sandwiched and fixed between the inner peripheral portion of the distal end portion of the inner cylindrical member and the fitting portion. can do.

  According to the fifth aspect, by deforming each of the plurality of elastic locking portions, it is possible to easily perform an insertion operation and to achieve more reliable contact between the outer cylindrical member and the device side connection portion.

  According to the 6th aspect, an electric wire is positioned more reliably by inserting a waterproof stopper in an insertion hole.

It is a partial cross section side view which shows the state by which the shielded cable which concerns on embodiment was connected to the apparatus side connection part. It is a partial cross section side view which shows the state before a shielded cable is connected to an apparatus side connection part. It is a partially expanded sectional view of a shielded cable. It is a partial cross section side view which shows a cylinder member. It is explanatory drawing which shows the manufacturing process of a shielded cable. It is explanatory drawing which shows the manufacturing process of a shielded cable. It is explanatory drawing which shows the manufacturing process of a shielded cable. It is explanatory drawing which shows the shielded cable which concerns on a modification.

  Hereinafter, the shielded cable according to the embodiment will be described. FIG. 1 is a partial cross-sectional side view showing a state in which the shielded cable 20 is connected to the device-side connecting portion 12, and FIG. 2 is a part showing a state before the shielded cable 20 is connected to the device-side connecting portion 12. 3 is a sectional side view, FIG. 3 is a partially enlarged view of FIG. 2, and FIG. 4 is a partially sectional side view showing a cylindrical member 30. In FIG. 2, the inner member 50 and the waterproof plug 54 are omitted in the upper half of the shielded cable 20.

  The shielded cable 20 is used, for example, for connection wiring between electrical components in a vehicle, in particular, wiring for applying a high voltage, more specifically, wiring for connecting a motor generator and an inverter of the vehicle. The shield cable 20 includes at least one electric wire 22, a shield portion 24 that covers the outer periphery of the electric wire 22, and a cylindrical member 30. The cylinder member 30 includes an inner cylinder member 32 and an outer cylinder member 40.

  The electric wire 22 is a member in which the outer periphery of the linear conductor is covered with a covering portion formed by resin extrusion coating or the like. Here, an example in which there are three electric wires 22 will be described, but at least one electric wire 22 may be included. In addition, although an example in which the electric wire 22 has a circular cross section is described here, a flat shape may be used. Here, a terminal 23 is crimped to the end of the electric wire 22, and the main terminal 23 is electrically and mechanically connected to the terminal in the housing 11. But the electromechanical connection structure of the electric wire 22 and an apparatus is not restricted to the said structure, The case by the insertion connection of a male terminal and a female terminal etc. may be sufficient.

  Here, the inner member 50 is attached to the end of the electric wire 22 (see the lower half of FIG. 2). The inner member 50 is a member formed of resin or the like, and is a columnar member having an insertion hole 50h into which the electric wire 22 can be inserted. By inserting the end portion of the electric wire 22 into the insertion hole 50h, the inner member 50 is attached and fixed at a position more intermediate than the end portion of the electric wire 22. The inner member 50 may be formed of a simple mold made of a heat shrinkable tube, a photocuring resin, a thermosetting resin, or the like. However, the inner member 50 is basically a component that may be omitted.

  The shield part 24 is formed of a flexible conductive tubular member. Here, the shield part 24 is a member formed by knitting a thin metal wire formed of copper, stainless steel, aluminum, or the like into a tubular shape, and is a so-called braided member. The shield portion 24 covers the outer periphery of the electric wire 22 and can be electromagnetically shielded between the electric wire 22 and the outside by being grounded via the cylindrical member 30. Note that the shield 24 covers the outer periphery of the inner member 50 at the end of the electric wire 22.

  Further, the end portion of the shield portion 24 is mechanically fixed to the cylindrical member 30 and is electrically connected thereto. This configuration will be described in detail later.

  In addition, a protective member such as a corrugated tube is put on the outer periphery of the shield portion 24 in the middle portion in the longitudinal direction of the electric wire 22 as necessary. By this protective member, the shielded cable is protected and waterproofed.

  Here, the connection target device of the shielded cable 20 is an electric device such as a motor generator, and the device-side connection portion 12 is provided in the housing 11 of the electric device. The device-side connection portion 12 may be a portion integrally formed with the housing 11 or may be a member attached and fixed to the housing 11 by screwing or the like. The apparatus-side connecting portion 12 is grounded to the vehicle body or the like via a housing 11 formed of a conductive member or another grounding conductive path. Moreover, the apparatus side connection part 12 is formed with electroconductive members, such as copper, stainless steel, and aluminum, and has the insertion hole part 13. As shown in FIG. The insertion hole 13 penetrates the inside and outside of the device side connection part 12, and here has an outer large-diameter hole 14 and an inner small-diameter hole 16. The large-diameter hole portion 14 is a portion into which the cylindrical member 30 is inserted, and is formed in a hole shape corresponding to the outer diameter of the cylindrical member 30. Here, the large-diameter hole portion 14 is formed in a circular hole shape, and the diameter of the inner peripheral surface gradually increases from the back side toward the outside, and the diameter of the large-diameter hole portion 14 is rapidly reduced at a portion where the diameter is most widened. A locking recess 15 is formed. The annular peripheral surface of the locking recess 15 that rapidly decreases in diameter has a role as a locking annular surface 15a that can be locked so that a locking piece 44b of an elastic locking portion 44 described later is caught. The small-diameter hole portion 16 has a smaller diameter than the large-diameter hole portion 14 and is formed in a circular hole shape so that the electric wire 22 (here, the terminal 23 crimped to the end portion) can be inserted. And the edge part of the electric wire 22 extended from the cylindrical member 30 is guide | induced into an apparatus through the small diameter hole part 16, and is electrically and mechanically connected to the terminal etc. which are not shown in figure in the said apparatus.

  As described above, the cylindrical member 30 is configured by a combination of the inner cylindrical member 32 and the outer cylindrical member 40.

  The inner cylinder member 32 is configured to be attachable to the outer peripheral side of the end portion of the electric wire 22 by a conductive member. More specifically, the inner cylinder member 32 is a member formed by, for example, pressing a metal plate material such as copper, stainless steel, or aluminum. The inner cylindrical member 32 is cylindrical, more specifically, an inner diameter larger than the outer diameter of the electric wire 22 covered with the shield portion 24, here, an inner member 50 attached to the end of the bundled electric wires 22. It is formed in a cylindrical shape having an inner diameter slightly larger than the diameter covered with the shield portion 24. And this inner side cylinder member 32 is mounted | worn so that the outer periphery of the shield part 24 may be covered by the edge part of the electric wire 22. FIG. Here, the inner cylindrical member 32 has a cylindrical shape with the same inner diameter in the axial direction, but it is not always necessary. Here, the inner cylindrical member 32 has a substantially circular shape. However, depending on the shape of the electric wire 22, the inner member 50, the shape in which a plurality of electric wires 22 are bundled, etc. Also good. It is sufficient that the inner cylindrical member 32 is placed on the electric wire 22 and the inner member 50, and it is not necessary to crimp and fix them.

  An annular projecting portion 34 is formed on the inner peripheral portion of the one end side opening edge portion of the inner cylindrical member 32. Here, the annular protrusion 34 is formed by folding back the peripheral edge of the opening on the one end side of the inner cylindrical member 32 to the inner peripheral side. And the fitting part 46 (after-mentioned) of the outer side cylinder member 40 is latched by this cyclic | annular protrusion part 34 in a retaining shape. However, it is not essential to form the annular protrusion 34 by folding. The annular projecting portion 34 may be omitted, or instead of the annular projecting portion 34, a partial uneven portion capable of positioning the outer tubular member on the inner tubular member may be formed by pressing or the like.

  Here, the shield portion 24 extends through the inner cylindrical member 32 to one end side of the inner cylindrical member 32. A portion of the shield portion 24 extending to one end side of the inner cylindrical member 32 is folded at one end portion of the inner cylindrical member 32 to cover the outer periphery of the inner cylindrical member 32. The extension length of the shield portion 24 from the one end portion of the inner cylindrical member 32 is preferably shorter than the axial length of the outer cylindrical member 40. Thereby, the end part of the shield part 24 can be prevented from protruding outward from the outer cylindrical member 40, the quality is stabilized by suppressing fraying of the end part of the shield part 24, and the trauma is suppressed by the end part of the shield part 24. Etc. can be achieved. However, the end of the shield part 24 may protrude outward from the outer cylindrical member 40. Further, the extension length of the shield portion 24 may be a length dimension such that the shield portion 24 is sandwiched between the other end portion (front side in the insertion direction) of the outer cylinder main body portion 42 to be described later and the inner cylinder member 32. preferable.

  The outer cylindrical member 40 has an elastic locking portion 44 that can be locked and fixed to the locking recess 15 on the inner peripheral surface of the insertion hole portion 13, and the shield portion 24 is sandwiched and fixed between the inner cylindrical member 32. In this manner, the inner cylinder member 32 is configured to be attachable to the outer periphery.

  More specifically, the outer cylindrical member 40 is a cylindrical member formed by, for example, pressing a metal plate material such as copper, stainless steel, and aluminum, and includes an outer cylindrical main body portion 42, a fitting portion 46, and the like. have.

  The outer cylinder main body 42 is formed in a cylindrical shape that covers a portion from one end of the inner cylinder member 32 (the distal end in the connection direction with respect to the insertion hole 13) to the middle in the axial direction of the inner cylinder member 32, and the inner cylinder member. 32 is arranged on the outer peripheral side. In addition, here, one end portion of the outer cylinder main body portion 42 (tip end portion in the connection direction with respect to the insertion hole portion 13) has an inner diameter substantially the same as the outer diameter of the inner cylinder member 32, and the other end portion of the outer cylinder main body portion 42. The rear end portion in the connection direction with respect to the insertion hole 13 also has an inner diameter that is substantially the same as the outer diameter of the inner cylindrical member 32. For this reason, the one end part and the other end part of the outer cylinder main-body part 42 are externally fitted to the inner cylinder member 32 in a close contact state.

  An elastic locking portion 44 is formed on the outer cylinder main body portion 42. More specifically, a plurality of slits 42S along the axial direction are formed at intervals around the outer periphery of the intermediate portion of the outer cylinder main body 42 in the axial direction, and the strips between the slits 42S are elastic. The locking portion 44 is formed. The elastic locking portion 44 includes an inclined piece 44a extending so as to sequentially protrude from one end portion of the outer cylinder main body portion 42 toward the other end portion in accordance with the inner peripheral shape of the large-diameter hole portion 14, and the inclined piece. And a locking piece 44b extending from the most projecting portion of 44a toward the outer peripheral surface of the other end of the outer cylinder main body 42. In addition, the inclination angle with respect to the outer peripheral surface of the outer cylinder main body 42 is larger in the locking piece 44b than in the inclined piece 44a. Accordingly, the elastic locking portion 44 is disposed in the locking recess 15 formed on the inner peripheral surface of the large-diameter hole portion 14, and the locking piece 44 b is attached to the locking annular surface 15 a in the disposed state. By being disposed so as to face each other, the tubular member 30 can be prevented from being removed from the insertion hole 13. Further, since the distal end portion of the locking piece 44 b is continuous with the peripheral edge portion on the other end side of the outer cylinder main body portion 42, it is in surface contact with the outer peripheral surface of the inner cylinder member 32. For this reason, the front-end | tip part of the locking piece 44b can move smoothly with respect to the outer peripheral surface of the inner side cylinder member 32. FIG.

  The fitting portion 46 is formed at one end portion of the outer cylinder main body portion 42 so as to be fitted into the inner peripheral portion of one end portion (tip portion) of the inner cylinder member 32. More specifically, the fitting portion 46 is a portion that is folded inward from one end portion of the outer cylinder main body portion 42, and includes an annular portion 47 provided on the inner peripheral side of one end portion of the outer cylinder main body portion 42, and an annular portion And a retaining edge 48 provided on the front end side of the.

  The annular portion 47 is formed in an annular shape that can be disposed on the inner side of the annular protrusion 34 of the one end opening of the inner cylindrical member 32. Between the outer peripheral surface of the annular portion 47 and the inner peripheral surface of the outer cylinder main body portion 42, an annular gap into which one end of the inner cylinder member 32 and the annular protrusion 34 can be inserted is formed.

  The retaining edge portion 48 has a divided piece 48a obtained by dividing the distal end peripheral portion of the fitting portion 46 into a plurality along the circumferential direction. Each divided piece 48 a has a shape that protrudes toward the inner peripheral surface of the inner cylindrical member 32. The split piece 48a preferably has a substantially U-shape that is convex toward the inner peripheral surface of the inner cylindrical member 32, more specifically, from the base end side toward the distal end side of the inner cylindrical member 32. After being bent in the direction approaching the inner peripheral surface, it is formed in a shape bent toward the direction away from the inner peripheral surface of the inner cylindrical member 32 (see FIG. 3).

  Each split piece 48a is provided in a state where the one end side opening portion of the inner cylinder member 32 and the annular projecting portion 34 are disposed between the one end side opening portion of the outer cylinder main body portion 42 and the annular portion 47 of the fitting portion 46. The outer cylindrical member 40 is attached to the inner cylindrical member 32 by being locked to the peripheral edge of the tip of the annular projecting portion 34 in a retaining manner. At this time, the shield portion 24 is folded and disposed at one end portion of the inner cylindrical member 32 so that the shield portion 24 is sandwiched between the inner peripheral portion of the distal end portion of the inner cylindrical member 32 and the fitting portion 46. It is supposed to be fixed.

  Here, a waterproof plug 54 is externally fitted to the end of the electric wire 22. The waterproof plug 54 is a member formed of an elastomer such as rubber, and is formed as a columnar member having an insertion hole 54h into which the electric wire 22 can be inserted. The insertion hole 54 h is slightly smaller than the outer diameter of the electric wire 22. Therefore, when inserting the electric wire 22 into the insertion hole 54h, the insertion work is performed while elastically expanding the insertion hole 54h. Thereby, in the state where the electric wire 22 is inserted into the insertion hole 54 h, the inner peripheral surface of the insertion hole 54 h is brought into close contact with the electric wire 22, and the electric wire 22 is positioned and fixed with respect to the waterproof plug 54. In addition, the outer periphery of the waterproof plug 54 has a tube insertion portion 56 and a seal portion 55. The cylinder insertion portion 56 is formed in a cylindrical shape that can be inserted into the cylinder member 30 from one end side thereof. On the outer peripheral surface of the seal portion 55, one or a plurality of annular protrusions 55a are provided along the axial direction. The outer diameter of the annular projecting portion 55a is set larger (slightly larger) than the inner diameter of the small-diameter hole portion 16 of the insertion hole portion 13. When the main seal portion 55 is press-fitted into the small-diameter hole portion 16, The protrusion 55 a is pressed against the inner peripheral surface of the small diameter hole 16. As a result, the waterproof plug 54 is positioned and fixed with respect to the insertion hole 13, and water intrusion between the waterproof plug 54 and the small-diameter hole 16 is suppressed.

  A method for manufacturing the shielded cable 20 configured as described above will be described.

  First, as shown in FIG. 5, the inner member 50 is attached to the end of the electric wire 22 and the electric wire 22 is covered with the shield portion 24. The shield portion 24 extends to some extent with respect to the inner member 50. When the inner member 50 is omitted, it is only necessary to cover the electric wire 22 with the shield portion 24. Here, although the terminal 23 is crimped | bonded to the edge part of the electric wire 22, the terminal 23 may be crimped | bonded by a next process.

  Then, the end portion of the electric wire 22 is inserted into the inner cylindrical member 32 together with the end portion of the shield portion 24. Thereby, as shown in FIG. 6, the end portion of the electric wire 22 extends from one end portion of the inner cylindrical member 32, and the shield portion 24 extends from one end portion of the inner cylindrical member 32.

  And the edge part of the shield part 24 extended from the one end part of the inner side cylinder member 32 is turned up. As a result, as shown in FIG. 7, the folded back end portion of the shield portion 24 is put on the outer peripheral side of the one end portion of the inner cylindrical member 32.

  Thereafter, the outer cylindrical member 40 is externally fitted and inserted from one end side of the inner cylindrical member 32. At this time, the fitting portion 46 is pressed against the opening on the one end side of the outer cylinder main body portion 42 via the folded portion of the shield portion 24, so that the fitting portion 46 becomes the outer cylinder main body portion. It is spread in a direction away from the inner peripheral surface of 42. Thereby, the one end side opening part and the annular protrusion part 34 of the inner side cylinder member 32 are arrange | positioned between the fitting part 46 and the outer side cylinder main-body part 42. As shown in FIG. When the split piece 48 a of the fitting portion 46 gets over the annular protrusion 34, the fitting portion 46 elastically returns in a direction approaching the inner peripheral surface of the outer cylinder main body portion 42. Accordingly, the fitting portion 46 of the outer cylindrical member 40 is locked to the distal end portion of the annular projecting portion 34 via the shield portion 24 in a retaining manner. Thereby, the outer cylinder member 40 is attached to the inner cylinder member 32 in a state where the shield portion 24 is sandwiched between the inner cylinder member 32 and the outer cylinder member 40. At the same time, the shield portion 24 is sandwiched and fixed between the inner cylinder member 32 and the outer cylinder member 40. In particular, in the present embodiment, the shield part 24 is sandwiched and fixed between the annular projecting part 34 and the fitting part 46. The shield portion 24 is also sandwiched and fixed between the outer peripheral surface of the inner cylinder member 32 and one end and the other end of the outer cylinder main body 42.

  Finally, when the electric wire 22 is inserted into the insertion hole 54h of the waterproof plug 54 and the waterproof plug 54 is attached to the end of the electric wire 22, the shielded cable 20 is manufactured.

  This shielded cable 20 is connected to the apparatus side connection part 12 as follows. First, the end portion of the electric wire 22 extending to one end portion of the cylindrical member 30 is inserted into the insertion hole portion 13. Then, the waterproof plug 54 is pushed into the small diameter hole 16 and the cylindrical member 30 is pushed into the large diameter hole 14. Then, the waterproof plug 54 is press-fitted into the small diameter hole 16. Thereby, the space between the waterproof plug 54 and the small-diameter hole 16 is sealed, and the intrusion of water through the space is suppressed. In addition, the waterproof plug 54 is fixed at a fixed position along the axial direction of the insertion hole portion 13, and the electric wire 22 held by the waterproof plug 54 is also positioned and held along the axial direction of the insertion hole portion 13.

  For the cylindrical member 30, first, the inclined pieces 44 a of the plurality of elastic locking portions 44 provided around the outer periphery of the cylindrical member 30 come into contact with the outer peripheral surface of the large-diameter hole portion 14. As the tubular member 30 is pushed in, the plurality of elastic locking portions 44 around the outer circumference of the tubular member 30 are pushed toward the inside of the tubular member 30. As a result, the elastic locking portion 44 reduces its protruding dimension while mainly elastically deforming the base end portion of the inclined piece 44a, the boundary portion between the inclined piece 44a and the locking piece 44b, and the distal end portion of the locking piece 44b. It is elastically deformed. Furthermore, the cylindrical member 30 is pushed in, and the most protruding portion of the inclined piece 44a (the boundary portion between the inclined piece 44a and the locking piece 44b) is between the opening edge of the large-diameter hole 14 and the locking annular surface 15a. If the part is climbed over, the elastic locking part 44 is elastically restored toward the original shape. Accordingly, the elastic locking portion 44 is disposed in the locking recess 15, and the locking piece 44 b is locked to the locking annular surface 15 a via the shield portion 24. Thereby, the cylinder member 30 is fixed to the apparatus side connection part 12 in a retaining shape.

  Further, the shield part 24 sandwiched and fixed between the inner cylinder member 32 and the outer cylinder member 40 is in contact with the inner peripheral surface of the cylinder member 30, in particular, the insertion hole 13 of the device side connection part 12. It is maintained in a state of being in electrical contact with the device side connection portion 12 via the member 40 and is grounded via the device side connection portion 12. At this time, since the elastic locking portion 44 tries to return to the original shape by both the elastic restoring force on the inclined piece 44a side and the elastic restoring force on the locking piece 44b side, the shield portion 24 has a larger diameter with a larger force. It is pushed toward the inner peripheral surface of the hole 14. For this reason, the shield part 24 is more reliably pressed toward the inner peripheral surface of the large-diameter hole part 14, and electrical contact between the two is more reliably obtained.

  According to the shielded cable 20 configured as described above, the shield portion 24 is sandwiched and fixed between the inner cylinder member 32 and the outer cylinder member 40. Further, when the outer cylindrical member 40 is inserted into the insertion hole portion 13, the elastic locking portion 44 is locked and fixed to the inner peripheral surface of the insertion hole portion 13. For this reason, the shield portion 24 is connected to the device side via a sandwiching and fixing structure between the inner cylindrical member 32 and the outer cylindrical member 40 and a locking and fixing structure between the elastic locking portion 44 and the inner peripheral surface of the insertion hole portion 13. It is mechanically fixed to the connecting portion 12 and is also electrically connected. Thereby, the operation | work which fixes the shield cable 20 to the apparatus side connection part 12 mechanically, and electrically connects the shield part 24 to the apparatus side connection part 12 can be performed easily.

  Moreover, since it is the structure which latches the elastic latching | locking part 44 of the cylindrical member 30 to the internal peripheral surface of the insertion hole part 13, compared with the structure which latches a part from the both-sides opening edge part of an insertion hole part, it is a number of parts. Can be reduced. In addition, bolt torque management, caulking amount caulking amount management, and the like are unnecessary, and quality can be stabilized.

  Further, since the shield part 24 is covered by the inner cylinder member 32, the shield part 24 can be protected by the inner cylinder member 32.

  Further, the shield portion 24 is folded at the tip of the inner cylindrical member 32, and the inner peripheral side portion and the outer peripheral side portion of the folded portion are sandwiched between the one end side opening of the inner cylindrical member 32 and the outer cylindrical member 40. It is fixed. For this reason, the outer cylinder member 40 is externally fitted from one end side of the inner cylinder member 32, whereby the shield part 24 can be easily clamped and fixed.

  In particular, the outer cylinder member 40 has an outer cylinder main body portion 42 and a fitting portion 46, and the shield portion 24 is sandwiched and fixed between the inner peripheral portion of the distal end portion of the inner cylinder member 32 and the fitting portion 46. Therefore, the influence of the elastic deformation of the elastic locking portion 44 can be suppressed, and the shield portion 24 can be stably sandwiched and fixed between the inner cylindrical member 32 and the outer cylindrical member 40. That is, when the outer cylindrical member 40 is inserted into the insertion hole portion 13, the elastic locking portion 44 comes into contact with the inner peripheral surface of the insertion hole portion 13 and elastically deforms. The contact state with the tube main body 42 varies. For this reason, between the outer peripheral surface of the inner side cylinder member 32 and the outer side cylinder main-body part 42, there exists a possibility that the clamping state of the shield part 24 may become unstable. On the other hand, the contact state between the inner peripheral portion of the distal end portion of the inner cylindrical member 32 and the fitting portion 46 is hardly affected by the elastic deformation of the elastic locking portion 44. Therefore, the shield part 24 can be stably sandwiched and fixed between the inner cylinder member 32 and the outer cylinder member 40.

  However, the fitting portion 46 may be omitted, and only the outer peripheral side portion of the folded portion of the shield portion may be sandwiched between the inner cylindrical member and the outer cylindrical member. Further, the inner cylindrical member is separated from the outer cylindrical member at the outer peripheral side portion of the folded portion of the shield portion 24, and the inner peripheral side of the folded portion of the shield portion between the inner cylindrical member and the fitting portion of the outer cylindrical member. The structure which pinches | interposes only a part may be sufficient.

  Further, when the cylindrical member 30 is inserted into the insertion hole portion 13, the cylindrical member 30 can be elastically deformed so as to reduce the projecting dimension of each of the plurality of elastic locking portions 44 formed on the outer periphery of the cylindrical member 30. . For this reason, the insertion force of the cylindrical member 30 can be made as small as possible so that the insertion operation can be performed easily. Further, each of the plurality of elastic locking portions 44 presses the shield portion 24 against the inner peripheral surface of the insertion hole portion 13, thereby achieving more reliable contact between the shield portion 24 and the inner peripheral surface of the insertion hole portion 13. Can do.

  However, it is not essential that there are a plurality of elastic locking portions 44, and there may be one elastic locking portion.

  Further, by inserting the waterproof plug 54 into the small-diameter hole portion 16 of the insertion hole portion 13, the intrusion of water through the insertion hole portion 13 is suppressed, and the waterproof plug 54 ensures that the electric wire 22 is more reliably placed at a certain position. Positioned.

  In addition, since the waterproof plug 54 is also fitted into the cylindrical member 30, it also serves to position the electric wire 22 and the cylindrical member 30 to some extent.

{Modifications}
In the above embodiment, the one end side opening of the inner cylinder member 32 is sandwiched between the inner peripheral surface of the one end opening of the outer cylinder main body 42 of the outer cylinder member 40 and the outer peripheral surface of the fitting portion 46. Although it is set as the structure which unites and fixes the inner side cylinder member 32 and the outer side cylinder member 40, it is not necessarily required. A configuration in which the outer cylinder member is simply fitted onto the outer peripheral side of the inner cylinder member in a close contact manner may be employed.

  The configuration in which the shield portion 24 is sandwiched between the inner cylinder member 32 and the outer cylinder member 40 is not limited to the above example. For example, the structure which pinches | interposes a shield part between the outer peripheral surface of an inner cylinder member and the inner peripheral surface of an outer cylinder member may be sufficient.

  Further, the shield portion 24 may be drawn to the distal end side through the outer peripheral side of the inner cylindrical member 32, and may be folded back to the inner peripheral side of the inner cylindrical member 32 at the distal end portion of the inner cylindrical member 32.

  Moreover, in the said embodiment, although the elastic latching | locking part 44 was a piece partially cut and raised from the outer cylinder main-body part 42, it is not necessarily required. You may use the part which made a part of the outer side cylinder member 40 protrude to the outer peripheral side as an elastic latching | locking part.

  Moreover, it is not essential that there are a plurality of elastic locking portions, and there may be one.

  Moreover, as shown in FIG. 8, the inner cylinder member 132 corresponding to the inner cylinder member 32 and the outer cylinder member 140 corresponding to the outer cylinder member 40 may be formed in an elliptic cylinder shape. In FIG. 8, the electric wires 22 and the like are omitted. In this case, one or more elastic locking portions 144 corresponding to the elastic locking portions 44 may be formed on the outer peripheral portion extending along the major axis direction of the ellipse. This modification can be adopted according to, for example, the layout of the connection destination device.

  In addition, each structure demonstrated in the said embodiment and each modification can be suitably combined unless it mutually contradicts.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 12 Equipment side connection part 13 Insertion hole part 14 Large diameter hole part 15 Locking recessed part 15a Locking annular surface 20 Shield cable 22 Electric wire 24 Shield part 32,132 Inner cylinder member 34 Annular protrusion part 40,140 Outer cylinder member 44,144 Elastic locking part 46 Fitting part 54 Waterproof plug

Claims (6)

A shielded cable connected to a device side connection having an insertion hole,
Electric wires,
A shield part covering the outer periphery of the electric wire;
An inner cylindrical member mounted on the outer peripheral side of the end of the electric wire;
It has an elastic locking portion that can be locked and fixed on the inner peripheral surface of the insertion hole portion, and is attached to the outer periphery of the inner cylindrical member in such a manner that the shield portion is sandwiched and fixed with the inner cylindrical member. An outer cylindrical member,
Shielded cable with The shielded cable according to claim 1,
The inner cylindrical member is a shielded cable that is mounted so as to cover an outer periphery of the shield part at an end of the electric wire. The shielded cable according to claim 1 or 2,
The shield part is folded at the tip of the inner cylindrical member, and at least one of the inner peripheral part and the outer peripheral part of the folded part is sandwiched and fixed between the inner cylindrical member and the outer cylindrical member. There is a shielded cable. The shielded cable according to claim 3,
The outer cylinder member has an outer cylinder main body part formed on the outer peripheral side of the inner cylinder member in which the elastic locking part is formed, and a fitting part fitted into the inner peripheral part of the distal end part of the inner cylinder member. And
A shielded cable, wherein the shield part is sandwiched and fixed between an inner peripheral part of a tip part of the inner cylindrical member and the fitting part. The shielded cable according to any one of claims 1 to 4,
A shielded cable in which a plurality of the elastic locking portions are formed around the outer periphery of the outer cylindrical member. A shielded cable according to any one of claims 1 to 5,
A shielded cable in which a waterproof plug that can be press-fitted into the insertion hole is externally fitted to an end of the electric wire.

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