JP5459351B2 - Shield connector - Google Patents

Description

  The present invention relates to an automobile wire harness, and more particularly to a shield connector connected to a shielded cable such as a shielded twisted pair electric wire or a coaxial line, which is a transmission cable used in a LAN system mounted on a vehicle.

  In general, a twisted pair electric wire called STP (Shield Twisted Pair), which has two signal lines twisted together, is used inside a shield conductor. The feature is that the influence of electromagnetic induction can be reduced by reversing the direction of the magnetic field generated by the adjacent wire loops formed by this twisted twist and canceling each other's generated magnetic field. In this case, it is known that the outer side is further covered with a shield conductor, so that it is difficult to radiate electromagnetic induction noise to the outside and it is difficult to receive noise from the outside, and it is widely used as a LAN cable for high-speed transmission.

  Usually, such shielded twisted-pair electric wires are processed by terminal processing and connected to a dedicated connector called a modular connector. Recently, electric devices mounted on automobiles such as car navigation systems have been used with such shielded twisted-pair electric wires. May constitute an in-vehicle network.

  As a shield connection structure between the shield conductor of this shield twisted pair electric wire and the outer conductor shell of a shield connector usually used in an automobile or the like, there is, for example, the one disclosed in Patent Document 1 below.

ACT 7-18379

  In the shield connection structure of Patent Document 1, the crimping piece provided in the outer conductor shell is crimped from above the shield conductor exposed by peeling the sheath. However, when the crimping process is performed with a strong pressure, the inner twisted signal line This will cause the high frequency characteristics to deteriorate. For this reason, the caulking pressure must be reduced, and there is a problem that the pull-out strength of the connector with respect to the electric wire is weak, and there is a contact load sufficient to satisfy connection reliability sufficient for use in a vibrating vehicle such as an automobile. There was a problem that it could not be obtained.

  Therefore, the problem to be solved by the present invention is that sufficient contact between the crimping piece of the shield conductor and the outer conductor shell without affecting the signal line such as cross-sectional deformation when crimping the shield conductor with the crimping piece of the outer conductor shell. It is an object of the present invention to provide a shielded connector that can obtain a load and improve the pull-out strength of the shielded cable with respect to the outer conductor shell.

In order to solve the above problems, a shield connector according to the present invention includes a first member connected to a shield conductor covering the outside of a signal line and a terminal portion of a shielded cable having a sheath covering the outside , and the first member. An outer conductor shell having a second member that is caulked with respect to the member , wherein the first member includes the shield conductor and the skin exposed by peeling the sheath of the first shield cable terminal portion; A cylindrical connecting piece having a circular cross section to be inserted inside the terminal portion of the sheath is provided, and the second member is provided on the shield conductor of the portion where the cylindrical connecting piece is inserted. a pair of shielded conductor crimping portions to be caulked, crimped portion and a pair of sheath crimping piece is caulked onto the terminal portion of the sheath the tubular connection piece is inserted It provided opposite to serial tubular connection piece, in the state after the crimping process is kept in the shielded conductor crimping piece substantially true circle state with the tubular connecting piece, wherein the outer peripheral surface of the tubular connecting piece A projection is formed at a position facing the shield conductor crimping piece, and the projection is inserted into the shield conductor crimping piece in the crimping portion facing the projection together with the shield conductor during caulking. The gist is that the insertion hole is formed.

  In this case, the outer diameter of the cylindrical connection piece at the portion where the shield conductor crimping piece is crimped and the outer diameter of the cylindrical connection piece at the portion where the sheath crimping piece is crimped are approximately the same as the inner diameter of the shield conductor. It is better to have the same configuration.

  In addition, the outer peripheral surface of the cylindrical connecting piece is formed with an insertion hole in which both end portions of the shield conductor crimping piece are bent and fitted together with the shield conductor, and the shield conductor is in a state after crimping. It is preferable that the crimping piece is prevented from being lifted by springback. In addition, protrusions are formed at both ends of the shield conductor crimping piece, and the ends of the protrusions are bent while contacting each other during caulking, so that the outer periphery of the cylindrical connection piece It is good to set it as the structure inserted with the said shield conductor in the insertion hole formed in the surface. An insertion hole is formed on the outer peripheral surface of the cylindrical connecting piece so as to break through the sheath and fit with the shield conductor when both ends of the sheath crimping piece are bent. In this state, it is preferable that the sheath crimping piece is prevented from being lifted by a springback.

  Further, according to the shield connector according to the present invention having the above-described configuration, the outer conductor shell provided in the shield connector includes the shield conductor exposed by peeling the sheath of the shield cable end portion and the end portion of the peeled sheath. A cylindrical connecting piece having a circular cross section inserted inside is provided, and a pair of shield conductor crimping pieces to be crimped on the shield conductor of the portion where the cylindrical connecting piece is inserted is provided, In the state after caulking, the shield conductor crimping piece and the cylindrical connection piece are maintained in a substantially round state, so that the shielded conductor crimping is not effected on the signal line located inside the shield conductor without affecting the cross section. By generating a compressive force in the normal direction of the outer periphery of the cylindrical connection piece against the shield conductor on the cylindrical connection piece by the piece, the cylindrical connection piece, the shield conductor, and the seal It is possible to get a good connection connection reliability of the conductor crimping pieces. In addition, a pair of sheath crimping pieces that are crimped on the end portion of the sheath into which the cylindrical connection piece is inserted are provided so as to face the cylindrical connection piece. It is possible to generate a compressive force in the normal direction of the outer periphery of the cylindrical connecting piece against the sheath of the sheath, thereby improving the pullout strength of the shield cable and improving the connection reliability against the bending stress of the shield cable. it can. In addition, since the cylindrical connecting piece has a circular shape, a uniform compressive stress is generated in the cross section during the caulking process, so that it does not bend in the middle, and after the deformation due to the caulking process The shape has a high mechanical strength. Furthermore, the outer conductor shell having such a configuration can be constituted by two members, for example, a member having a cylindrical connecting piece and a member having a shield conductor crimping piece and a sheath crimping piece. Thus, the number of members to be reduced can be reduced.

  In this case, the outer diameter of the cylindrical connection piece at the portion where the shield conductor crimping piece is crimped and the outer diameter of the cylindrical connection piece at the portion where the sheath crimping piece is crimped are approximately the same as the inner diameter of the shield conductor. If the configuration is the same, in the case of a shield conductor composed of a braided wire knitted with a plurality of strands, it is necessary to widen the shield conductor composed of the braided wire when inserting the cylindrical connection piece inside the shield conductor. And easy insertion. If the inner diameter of the shield conductor made of a braided wire is widened, the stitches of the strands will be scattered, but if the outer diameter of the cylindrical connecting piece having a circular cross section is substantially the same as the inner diameter of the shield conductor made of the braided wire Since the wire stitches do not fall apart, the shield conductor crimping piece can be uniformly crimped on the shield conductor, improving the connection reliability of the cylindrical connection piece, shield conductor, and shield conductor crimping piece, and shielding The pull-out strength of the conductor can be improved. Further, a protrusion is formed on the outer peripheral surface of the cylindrical connection piece at a position facing the shield conductor crimping piece, and the shield conductor crimping piece opposed to the protrusion has the protrusion when the crimping process is performed. If the insertion hole is formed so that the portion is inserted together with the shield conductor, it is possible to obtain a connection with good connection reliability of the cylindrical connection piece, the shield conductor, and the shield conductor crimping piece. The pull-out strength of can also be improved.

  In addition, the outer peripheral surface of the cylindrical connecting piece is formed with an insertion hole in which both end portions of the shield conductor crimping piece are bent and fitted together with the shield conductor, and the shield conductor is in a state after crimping. If the crimping piece is prevented from being lifted by the springback, a compressive force in the tangential direction to the shield conductor on the cylindrical connection piece by the shield conductor crimping piece can be generated. Connection with good connection reliability between the conductor and shield conductor crimping piece can be obtained, and the pullout strength of the shield conductor can be improved. In addition, the shield conductor crimping piece after caulking is prevented from being lifted by springback. In addition, protrusions are formed at both ends of the shield conductor crimping piece, and the ends of the protrusions are bent while contacting each other during caulking, so that the outer periphery of the cylindrical connection piece If the shield conductor is inserted into the insertion hole formed on the surface together with the shield conductor, the shield conductor is smoothly drawn into the insertion hole, and the shield conductor is located at the insertion hole position between the tips of the protrusions. Therefore, the shield conductor at the insertion hole position can be gripped without leakage.

  An insertion hole is formed on the outer peripheral surface of the cylindrical connecting piece so as to break through the sheath and fit with the shield conductor when both ends of the sheath crimping piece are bent. In this state, if the sheath crimping piece is prevented from being lifted by springback, a compressive force in the tangential direction with respect to the shield conductor and the sheath on the cylindrical connecting piece by the sheath crimping piece can be further generated. In addition to the contact between the sheath crimping piece and the shield conductor, the pullout strength of the shield cable can be improved, and the connection reliability against the bending stress of the shield cable is also improved. In addition, the sheath crimping piece after crimping is prevented from being lifted by the spring back.

It is the figure which showed the disassembled perspective view of the shield connector 1 which concerns on the 1st Embodiment of this invention. It is the figure which showed the external appearance perspective view after the assembly | attachment of the outer conductor shell 4 divided into two. It is the figure which showed the cross section of the shield connector 1 before a crimping process. (A) is the AA cross section of FIG. 3, (b) is the figure which showed the BB cross section of FIG. It is the figure which showed the cross section of the shield connector 1 after a crimping process. (A) is CC sectional view of FIG. 5, FIG.6 (b) is the figure which showed DD cross section of FIG. It is the figure which showed the disassembled perspective view of the shield connector 10 which concerns on the 2nd Embodiment of this invention. It is the figure which showed the cross section of the shield connector 10 before crimping. (A) is the EE cross section of FIG. 8, (b) is the figure which showed the FF cross section of FIG. It is the figure which showed the cross section of the shield connector 10 after a crimping process. (A) is the GG cross section of FIG. 10, (b) is the figure which showed the HH cross section of FIG.

  Embodiments of a shield connector according to the present invention will be described below with reference to the drawings. The shield connector according to this embodiment is applied to a multipolar shielded cable having a large number of signal lines. In this example, a case where the shield connector is applied to a shielded twisted pair electric wire having six signal lines will be described.

  First, the shield connector 1 according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view of the shield connector 1 according to the first embodiment. FIG. 2 shows an external perspective view after the outer conductor shell 4 divided into two parts is assembled. 3 is a cross-sectional view of the shield connector 1 before caulking, FIG. 4 (a) is a cross-sectional view taken along line AA in FIG. 3, and FIG. 4 (b) is a cross-sectional view taken along line BB in FIG. 5 is a sectional view of the shield connector 1 after crimping, FIG. 6A is a sectional view taken along the line CC in FIG. 5, and FIG. 6B is a sectional view taken along the line DD in FIG. In the following description, the description will be given with the fitting connection side with a mating connector (not shown) as the front.

  As shown in FIG. 1, the shield connector 1 connected to the terminal portion of the shield twisted pair electric wire W includes an inner conductor terminal 2, an inner housing 3, and an outer conductor shell 4.

  The inner conductor terminal 2 is connected to the signal conductor Wb of the signal line Wa of the shielded twisted pair electric wire W and transmits a high-frequency signal, and has a so-called female type terminal shape. The inner housing 3 that accommodates the inner conductor terminal 2 is for insulating the inner conductor terminal 2 and the conductor terminals of the outer conductor shell 4 and is formed of a resin insulating member having a predetermined dielectric constant. ing. The inner conductor terminal 2 is inserted and fixed from the rear of the inner housing 3.

  The outer conductor shell 4 is connected to the shield conductor Wd of the shield twisted pair electric wire W, covers the periphery of the inner conductor terminal 2 and electromagnetically shields it. The outer conductor shell 4 includes an outer conductor case 5 and an outer conductor cover 6 assembled to the outer conductor case 5.

  The outer conductor case 5 is formed in a substantially cylindrical shape by bending a conductive plate material. The inner housing 3 can be accommodated in the main body 5 a of the outer conductor case 5. An opening 5b is formed on the rear upper surface of the main body 5a in order to facilitate the accommodation of the inner housing 3. Concave portions 5c and 5c are formed at the front end portions of both walls of the opening 5b, and the bent pieces 6c and 6c of the outer conductor cover 6 assembled as shown in FIG. 2 are engaged. Yes. Further, engagement pieces 5d and 5d projecting inward are formed at the rear end portions of both walls of the opening 5b, and the flat plate portion 6d of the outer conductor cover 6 assembled as shown in FIG. The outer conductor cover 6 is not easily detached from the outer conductor case 5 by engaging with the upper surface.

  Behind the main body 5a of the outer conductor case 5 is provided a cylindrical connecting piece 7 having an arc-shaped cross section that opens upward. As shown in FIG. 3, the cylindrical connection piece 7 is covered with a shield conductor Wd, and the shield conductor crimping pieces 8a and 8a and the sheath crimping pieces 8b and 8b of the outer conductor cover 6 are caulked from above. Processed. The cylindrical connection piece 7 is composed of a large diameter portion 7a where the shield conductor crimping pieces 8a and 8a of the outer conductor cover 6 are crimped and a small diameter portion 7b where the sheath crimping pieces 8b and 8b are crimped. Yes.

  The cross section of the large-diameter portion 7a of the cylindrical connecting piece 7 has a shape with an arc angle of 180 degrees or more, in this embodiment about 270 degrees as shown in FIG. In addition, since the large-diameter portion 7a has a so-called bow-shaped arch shape in this way, a uniform compressive stress is generated in the cross-section during caulking, so that the large-diameter portion 7a is bent at an intermediate position. The mechanical strength after deformation by caulking is also high. At the center of both ends of the arc of the large-diameter portion 7a, projections 7c and 7c projecting obliquely upward on the inside are formed. The protrusions 7c and 7c are inserted into the insertion holes 8e and 8e formed in the crimping portion 8 of the outer conductor cover 6 as shown in FIG. 4A together with the shield conductor Wd during the caulking process. (See FIG. 6A).

  A fitting hole 7d is formed at the lower surface of the large diameter portion 7a. As shown in FIG. 4A, the projecting portions 8c and 8c of the shield conductor crimping pieces 8a and 8a of the outer conductor cover 6 are fitted into the fitting hole 7d together with the shield conductor Wd during the caulking process. (See FIG. 6A). At this time, the shield conductor Wd is fixed to the large diameter portion 7a by caulking of the shield conductor crimping pieces 8a, 8a.

  The cross section of the small diameter portion 7b of the cylindrical connecting piece 7 has a shape with an arc angle of about 180 degrees as shown in FIG. In addition, since the cross section of the small diameter portion 7b has a so-called bow-like arch shape in this way, a uniform compressive stress is generated in the cross section during caulking, so that the small diameter portion 7b may be bent at an intermediate position. do not do. As shown in FIG. 3, the small-diameter portion 7b covers the sheath We together with the shield conductor Wd. Then, the sheath We is fixed to the small diameter portion 7b together with the shield conductor Wd by caulking of the sheath crimping pieces 8b and 8b of the outer conductor cover 6 as shown in FIG. (Refer FIG.6 (b)).

  As with the outer conductor case 5, the outer conductor cover 6 is formed in a substantially lid shape by bending a conductive plate material. The outer conductor cover 6 includes a cover portion 6a that closes the opening 5b of the outer conductor case 5 described above, and a crimping portion 8 that is provided behind the cover portion 6a. Since the opening 5b of the outer conductor case 5 described above is closed by the outer conductor cover 6, a decrease in shielding performance is suppressed.

  The cover portion 6a includes an inclined portion 6b that is inclined rearward from the midway position. At both ends of the front portion of the inclined portion 6b, bent pieces 6c, 6c are formed that are bent downward. The bent pieces 6c and 6c are engaged with the recesses 5c and 5c when the outer conductor case 5 is assembled to the opening 5b, and the downward movement of the outer conductor cover 6 is restricted. Yes. Further, the upper surface of the flat plate portion 6d at the rear portion of the inclined portion 6b is engaged with the engagement pieces 5d and 5d when the outer conductor case 5 is assembled to the opening 5b, so that the outer conductor cover 6 is engaged with the outer conductor. It should not be easily removed from the case 5.

  A crimping portion 8 is provided behind the cover portion 6 a of the outer conductor cover 6. The crimping portion 8 is composed of a pair of shield conductor crimping pieces 8a and 8a opened downward and a pair of sheath crimping pieces 8b and 8b similarly opened downward.

  The shield conductor crimping pieces 8 a, 8 a are extended downward from the upper part of the crimping part 8. Protrusions 8c and 8c bent inward are formed at the lower center of the shield conductor crimping pieces 8a and 8a. The protrusions 8c and 8c are inserted into the insertion hole 7d formed in the large-diameter portion 7a of the outer conductor cover 6 together with the shield conductor Wd during caulking. The protrusions 8c and 8c of the shield conductor crimping pieces 8a and 8a are previously set so that the shield conductor Wd is pushed in when the large diameter portion 7a is inserted into the insertion hole 7d as shown in FIG. It is bent inward. As a result, the projections 8c, 8c smoothly push the shield conductor Wd into the insertion hole 7d of the large diameter portion 7a.

  Further, on the upper surface of the crimping portion 8 at the position of the shield conductor crimping pieces 8a, 8b, a bulging portion 8d bulging inward is provided. Insertion holes 8e and 8e are formed in the bulging portion 8d so that the protruding portions 7c and 7c of the large-diameter portion 7a of the cylindrical connecting piece 7 are inserted together with the shield conductor Wd during the caulking process. It has become.

  The sheath crimping pieces 8b, 8b are extended downward from the upper portion of the crimping portion 8. By sheathing the sheath crimping pieces 8b, 8b, the sheath We is fixed together with the shield conductor Wd on the small diameter portion 7b of the cylindrical connecting piece 7 described above. In this case, as shown in FIG. 6B, crimping is performed so that one crimping piece 8b of the pair of sheath crimping pieces 8b, 8b overlaps and overlaps the other crimping piece 8b.

  The connection process of the shielded twisted pair electric wire W to the shielded connector 1 having such a structure includes i) exposing the signal conductor Wb and the shielded conductor Wd to a predetermined length by peeling off the shielded twisted pair electric wire W terminal, ii) the signal conductor Crimping the crimp portion of the inner conductor terminal 2 to Wb, iii) Inserting the inner conductor terminal 2 into the inner housing 3, iv) Storing the inner housing 3 in the outer conductor case 5 and simultaneously shielding the cylindrical connecting piece 7 into the shield conductor V) Cover the outer conductor cover 6 to the opening 5b of the outer conductor case 5, and simultaneously crimp the sealing conductor Wd and the sheath We by the crimping portion 8 of the outer conductor cover 6 and the cylindrical connecting piece 7. It is a process of performing.

  According to the shield connector 1 having such a configuration, the cylindrical connecting piece 7 having an arc-shaped cross section that is inserted into the inner position of the shield conductor Wd exposed by peeling off the sheath We of the shield twisted pair electric wire W terminal portion, A pair of shield conductor crimping pieces 8 a, 8 a that are crimped on the shield conductor Wd at the portion where the cylindrical connection piece 7 is inserted and that are opposed to the cylindrical connection piece 7 are provided on the outer conductor shell 4. Therefore, a compressive force in the normal direction is generated on the shield conductor Wd on the cylindrical connection piece 7 by the shield conductor crimping pieces 8a and 8a without affecting the inner signal line Wa, such as cross-sectional deformation. A connection with good connection reliability between the shield conductor Wd and the shield conductor crimping pieces 8a, 8a can be obtained.

  Furthermore, since the outer conductor shell 4 is provided with a pair of sheath crimping pieces 8b and 8b that are crimped on the end portion of the sheath We into which the cylindrical connection piece 7 is inserted, the sheath crimping pieces 8b and 8b are used. By generating a compressive force in the normal direction with respect to the sheath We on the cylindrical connection piece 7, the connection reliability with respect to the bending stress can be improved together with the pull-out strength of the shield pair electric wire W.

  Further, such an outer conductor shell 4 is divided into two members, an outer conductor case 5 and an outer conductor cover 6, a cylindrical connecting piece 7 is provided in the outer conductor case 5, and a crimping portion 8 is provided in the outer conductor cover 6. Therefore, the outer conductor shell 4 can be configured with a small number of members.

  In this case, since the arc angle of the large-diameter portion 7a of the cylindrical connecting piece 7 before the caulking process is 180 degrees or more, the caulking is caused by the deformation of the cylindrical connecting piece 7 having the arc-shaped cross section during the caulking process. Since the cross-section of the cylindrical connecting piece 7 is almost perfectly round after processing, there is no possibility that the signal line Wa located inside the cylindrical connecting piece 7 will be affected by deformation of the cross-section, and the shield conductor crimping pieces 8a, 8a. The cylindrical connecting piece 7, the shield conductor Wd, and the shield conductor crimping piece are generated by generating a compressive force in the normal direction of the outer circumference of the large diameter portion 7a against the shield conductor Wd on the large diameter portion 7a of the cylindrical connecting piece 7 Connections with good connection reliability 8a and 8a can be obtained.

  Further, at the position facing the cylindrical connection piece 7 on the inner surface of the shield conductor crimping pieces 8a, 8a, the projections 7c, 7c at both ends of the arc of the large diameter portion 7a are fitted together with the shield conductor Wd at the time of caulking. Since the insertion hole 8e is formed, a compressive force in the tangential direction of the outer periphery of the large diameter portion 7a can be further generated with respect to the shield conductor Wd on the large diameter portion 7a by the shield conductor crimping pieces 8a and 8a. Further, it is possible to obtain a connection with good connection reliability between the cylindrical connection piece 7, the shield conductor Wd, and the shield conductor crimping pieces 8a and 8a, and it is possible to improve the pull-out strength of the shield conductor Wd.

  Further, since the insertion holes 8e, 8e of the shield conductor crimping pieces 8a, 8a are formed in the bulging portion 8d in which a part of the inner surface of the shield conductor crimping pieces 8a, 8a bulges inward, the shield conductor crimping pieces 8a, 8a can be easily shielded. The fitting holes 8e and 8e can be provided on the inner surfaces of the conductor crimping pieces 8a and 8a. Further, since the bulging portion 8d is also in contact with the shield conductor Wd, the connection reliability is improved and the pull-out strength of the shield conductor Wd can be improved.

  In this case, the bottom surface of the large-diameter portion 7a of the cylindrical connecting piece 7 has a fitting hole 7d into which the projections 8c and 8c at both ends of the shield conductor crimping pieces 8a and 8a are bent and fitted together with the shield conductor Wd. Since it is formed, it is possible to further generate a compressive force in the tangential direction of the outer periphery of the large-diameter portion 7a with respect to the shield conductor Wd on the large-diameter portion 7a of the cylindrical connecting piece 7 by the shield conductor crimping pieces 8a, 8a. Therefore, it is possible to obtain a connection with good connection reliability between the shield conductor Wd and the shield conductor crimping pieces 8a and 8a and to improve the pull-out strength of the shield conductor Wd. Further, the shield conductor crimping pieces 8a and 8a after caulking are prevented from being lifted by springback.

  Next, a shield connector according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is an exploded perspective view of the shield connector 10 according to the second embodiment. 8 is a cross-sectional view of the shield connector 10 before caulking, FIG. 9A is a cross-sectional view taken along line EE in FIG. 8, and FIG. 9B is a cross-sectional view taken along line FF in FIG. 10 is a sectional view of the shield connector 10 after crimping, FIG. 11A is a sectional view taken along the line GG in FIG. 10, and FIG. 11B is a sectional view taken along the line HH in FIG.

  In addition, about the same structure as the shield connector 1 which concerns on 1st Embodiment mentioned above, the same code | symbol is attached | subjected and description is abbreviate | omitted and it demonstrates centering on a different point.

  As shown in FIG. 7, a cylindrical connecting piece 11 having a circular cross section is provided behind the main body portion 5 a of the outer conductor case 5 provided in the shield connector 10. As shown in FIG. 8, the cylindrical connection piece 11 is covered with a shield conductor Wd, and the shield conductor crimping pieces 12a and 12a and the sheath crimping pieces 12b and 12b of the outer conductor cover 6 are caulked from above. Processed. The cylindrical connection piece 11 is composed of a large diameter portion 11a where the shield conductor crimping pieces 12a and 12a of the outer conductor cover 6 are crimped and a small diameter portion 11b where the sheath crimping pieces 12b and 12b are crimped. Yes. In this case, the outer diameters of the large-diameter portion 11a and the small-diameter portion 11b of the cylindrical connecting piece 11 are formed slightly larger than the inner diameter of the shield conductor Wd, and the cylindrical connecting piece 11 is inserted inside the shield conductor Wd. Is easier to do. When the shield conductor Wd is composed of a braided wire obtained by braiding a plurality of strands, if the inner diameter of the shield conductor Wd is widened, the stitches of the strands will be separated, but the outer diameter of the cylindrical connecting piece 11 having a circular cross section Is substantially the same as the inner diameter of the shield conductor Wd made of a braided wire, the stitches of the strands do not fall apart, so that the shield conductor crimping pieces 12a and 12a can be uniformly crimped on the shield conductor Wd, It is possible to improve the connection reliability of the strip-shaped connecting piece 11, the shield conductor Wd, and the shield conductor crimping pieces 12a and 12a and the pull-out strength of the shield conductor Wd.

  The cross section of the large-diameter portion 11a of the cylindrical connection piece 11 has a substantially perfect circle shape as shown in FIG. Since the large-diameter portion 11a has a substantially circular shape in this way, a uniform compressive stress is generated in the cross section during the caulking process, so that the caulking process does not bend at an intermediate position. The mechanical strength after deformation due to the shape is also high. A protruding portion 11c that protrudes upward is formed on the upper surface of the large-diameter portion 11a. The protrusion 11c is inserted into the insertion hole 12d formed in the crimping portion 12 of the outer conductor cover 6 as shown in FIG. 9A together with the shield conductor Wd during the caulking process ( (See FIG. 11 (a)).

  An insertion hole 11d is formed in the lower surface of the large diameter portion 11a. As shown in FIG. 9A, the projections 12c and 12c of the shield conductor crimping pieces 12a and 12a of the outer conductor cover 6 are fitted into the insertion hole 11d together with the shield conductor Wd during the caulking process. (See FIG. 11A). In this case, when the shield conductor crimping pieces 12a and 12a are bent during caulking, the protrusions 12c and 12a are bent inward while the tips of the protrusions 12c and 12c inclined slightly inward are in contact with each other. Each tip of 12c pushes the shield conductor Wd into the fitting hole 11d of the large diameter portion 11a. Therefore, to the insertion hole 7d of the large-diameter portion 7a of the shield conductor Wd by the protrusions 8c and 8c bent so as to be pressed inward in advance to the shield conductor crimping pieces 8a and 8a described in the first embodiment. The projecting portions 12c and 12c can push the shield conductor Wd into the insertion hole 11d of the large diameter portion 11a more smoothly than the push-in. In this way, the shield conductor Wd is smoothly drawn into the insertion hole 11d, and the shield conductor Wd at the insertion hole 11d position is held inside so that the tips of the respective protrusions 12c and 12c do not escape to the outside. Therefore, the shield conductor Wd at the position of the insertion hole 11d can be gripped without leakage. At this time, the shield conductor Wd is fixed to the large-diameter portion 11a by caulking of the shield conductor crimping pieces 12a and 12a.

  The cross section of the small diameter portion 11b of the cylindrical connection piece 11 has a substantially perfect circle shape as shown in FIG. As described above, since the small diameter portion 11b has a substantially perfect circle shape, a uniform compressive stress is generated in the cross section during the caulking process. The mechanical strength after deformation is also high. As shown in FIG. 8, the small diameter portion 11b is covered with a sheath We together with a shield conductor Wd.

  An insertion hole 11e is formed at the lower surface position of the small diameter portion 11b. As shown in FIG. 9B, the protrusions 12e and 12e of the sheath crimping pieces 12b and 12b of the outer conductor cover 6 are inserted into the insertion hole 11e together with the shield conductor Wd through the sheath We during the caulking process. (See FIG. 11B). In this case, when the sheath crimping pieces 12b and 12b are bent during caulking, the protrusions 12e and 12e are bent inward while the tips of the protrusions 12e and 12e inclined slightly inward are in contact with each other. Thus, the shield conductor Wd is pushed into the insertion hole 11e of the small diameter portion 11b while the tip of each breaks through the sheath We. At this time, the sheath We is fixed to the small diameter portion 11b together with the shield conductor Wd by caulking of the sheath crimping pieces 12b and 12b (see FIG. 11B).

  A crimping portion 12 is provided behind the cover portion 6 a of the outer conductor cover 6. The crimping portion 12 is composed of a pair of shield conductor crimping pieces 12a and 12a opened downward and a pair of sheath crimping pieces 12b and 12b similarly opened downward.

  The shield conductor crimping pieces 12 a and 12 a are extended downward from the upper part of the crimping part 12. At the center of the lower end of the shield conductor crimping pieces 12a, 12a, protrusions 12c, 12c projecting slightly inward are formed. The protrusions 12c and 12c are inserted into the insertion hole 11d formed in the large diameter portion 11a of the outer conductor case 5 together with the shield conductor Wd during caulking.

  An insertion hole 12d having an opening is provided on the upper surface of the crimping portion 12 at the position of the shield conductor crimping pieces 12a and 12a. The protrusion 11c of the large-diameter portion 11a of the cylindrical connecting piece 11 is inserted into the insertion hole 12d together with the shield conductor Wd during caulking.

  The sheath crimping pieces 12b, 12b are extended downward from the upper portion of the crimping portion 12. At the center of the lower end of the sheath crimping pieces 12b, 12b, protrusions 12e, 12e are formed that protrude slightly inward. The protrusions 12e and 12e are inserted into the insertion hole 11e formed in the small-diameter portion 11b of the outer conductor case 5 together with the shield conductor Wd through the sheath We during the caulking process. Thereby, the sheath We is fixed to the small diameter portion 11b of the cylindrical connecting piece 11 together with the shield conductor Wd.

  According to the shield connector 10 having such a configuration, the cylindrical connection piece 11 having a circular cross section inserted into the inner position of the shield conductor Wd exposed by peeling the sheath We of the shield twisted pair electric wire W terminal portion, A pair of shield conductor crimping pieces 12 a and 12 a that are crimped on the shield conductor Wd in the portion where the cylindrical connection piece 11 is inserted and that are opposed to the cylindrical connection piece 11 are provided on the outer conductor shell 4. Therefore, without affecting the inner signal line Wa, such as cross-sectional deformation, the shield conductor crimping pieces 12a, 12a are in the normal direction of the outer periphery of the cylindrical connection piece 11 with respect to the shield conductor Wd on the cylindrical connection piece 11. Thus, it is possible to obtain a connection with good connection reliability between the shield conductor Wd and the shield conductor crimping pieces 12a and 12a.

  Furthermore, since the outer conductor shell 4 is provided with a pair of crimped crimping pieces 12b and 12b that are crimped on the end portion of the sheath We into which the cylindrical connecting piece 11 is inserted, the sheath crimping pieces 12b and 12b are used. The pulling strength of the shield twisted pair electric wire W can be improved by generating a compressive force in the normal direction of the outer periphery of the cylindrical connecting piece 11 with respect to the sheath We on the cylindrical connecting piece 11.

  Further, such an outer conductor shell 4 is divided into two members, an outer conductor case 5 and an outer conductor cover 6, a cylindrical connecting piece 11 is provided in the outer conductor case 5, and a crimping portion 12 is provided in the outer conductor cover 6. Therefore, the outer conductor shell 4 can be configured with a small number of members.

  In this case, a projection 11c is formed at a position facing the shield conductor crimping pieces 12a, 12a on the upper surface of the large-diameter portion 11a of the cylindrical connecting piece 11, and the shield conductor crimping piece 12a facing the projection 11c. 12a is formed with a fitting hole 12d into which the protruding portion 11c is fitted together with the shield conductor Wd at the time of caulking, so that the connection reliability of the cylindrical connection piece 11, the shield conductor Wd, and the shield conductor crimping pieces 12a, 12a In addition to obtaining a good connection, the pullout strength of the shield conductor Wd can also be improved.

  In addition, on the lower surface of the large-diameter portion 11a of the cylindrical connecting piece 11, a fitting hole 11d is formed in which the protruding portions 12c and 12c at both ends of the shield conductor crimping pieces 12a and 12a are bent and fitted together with the shield conductor Wd. Therefore, it is possible to further generate a compressive force in the tangential direction with respect to the shield conductor Wd on the cylindrical connection piece 11 by the shield conductor crimping pieces 12a, 12a, and therefore, the shield conductor Wd and the shield conductor crimping pieces 12a, 12a. In addition to obtaining a connection with good connection reliability, it is possible to improve the pull-out strength of the shield conductor Wd. Further, the shield conductor crimping pieces 12a and 12a after caulking are prevented from being lifted by springback.

  Further, when the projections 12e and 12e at both ends of the sheath crimping pieces 12b and 12b are bent, they are inserted into the lower surface of the small diameter portion 11b of the cylindrical connection piece 11 together with the shield conductor Wd. Since the fitting hole 11e is formed, it is possible to further generate a compressive force in the tangential direction with respect to the shield conductor Wd and the sheath We on the cylindrical connection piece 11 by the sheath crimping pieces 12b and 12b. 12b and the shield conductor Wd can be contacted, and the pull-out strength of the shield twisted pair electric wire W can be improved. In addition, the sheath crimping pieces 12b, 12b after crimping are prevented from being lifted by springback.

  The embodiment of the shield connector according to the present invention has been described above. However, the present invention is not limited to such an example, and can of course be implemented in various modes without departing from the gist of the present invention. It is. For example, in the embodiment, the shielded cable has been described using a shielded twisted pair electric wire having six signal lines, but the present invention can also be applied to a coaxial cable having one signal line, and the number of signal lines is not limited. Needless to say, the shield connector can be applied to both male and female connectors.

DESCRIPTION OF SYMBOLS 1 Shield connector 4 Outer conductor shell 5 Outer conductor case 6 Outer conductor cover 7 Cylindrical connection piece 7a Large diameter part 7b Small diameter part 7c Projection part 7d Insertion hole 8 Crimp part 8a Shield conductor crimp piece 8b Sheath crimp piece 8c Projection part
8d bulging part 8e insertion hole 10 shield connector 11 cylindrical connecting piece 11a large diameter part 11b small diameter part 11c projection part 11d insertion hole 11e insertion hole 12 crimping part 12a shield conductor crimping piece 12b sheath crimping piece 12c projection part 12d fitting hole 12e Protrusion W Shield twisted pair electric wire Wa Signal line Wb Signal conductor Wd Shield conductor We Sheath

Claims (6)

An outer part having a first member connected to a shield conductor covering the outside of the signal line and a terminal part of a shielded cable having a sheath covering the outside, and a second member crimped to the first member With a conductor shell ,
In the first member, the shield conductor exposed by skinning of the sheath of the first shielded cable terminal portion and the cylindrical shape of a circular cross section inserted inside the sheathed terminal portion of the sheath A connecting piece is provided,
The second member includes a pair of shield conductor crimping pieces that are crimped onto the shield conductor of the portion where the cylindrical connection piece is inserted, and the end portion of the sheath where the cylindrical connection piece is inserted substantially true crimping portion comprising a pair of sheath crimping portions to be swaged is provided opposite to the tubular connecting piece onto the shielded conductor crimping portions with the tubular connection piece in a state after the crimping process is Kept in a circle,
A protrusion is formed at a position of the outer peripheral surface of the cylindrical connecting piece facing the shield conductor crimping piece, and the shield conductor crimping piece at the crimping part facing the protrusion is subjected to caulking. An insertion hole into which the projection is inserted together with the shield conductor is formed.   The outer diameter of the cylindrical connecting piece at the portion where the shield crimping piece is crimped and the outer diameter of the cylindrical connecting piece at the portion where the sheath crimping piece is crimped are substantially the same as the inner diameter of the shield conductor. The shielded connector according to claim 1.   On the outer peripheral surface of the cylindrical connecting piece, both end portions of the shield conductor crimping piece are bent to form fitting holes to be fitted together with the shield conductor, and the shield conductor crimping piece is in a state after crimping. The shield connector according to claim 1, wherein the shield connector is prevented from being lifted by a springback.   Protrusions are formed at both ends of the shield conductor crimping piece, and at the time of caulking, the ends of the protrusions are bent while being in contact with each other on the outer peripheral surface of the cylindrical connecting piece. The shield connector according to claim 3, wherein the shield connector is inserted into the formed insertion hole together with the shield conductor.   On the outer peripheral surface of the cylindrical connecting piece, there is formed an insertion hole that breaks through the sheath and is inserted together with the shield conductor when both ends of the sheath crimping piece are bent. The shield connector according to any one of claims 1 to 4, wherein the sheath crimping piece is prevented from being lifted by a springback.   6. The shield connector according to claim 5, wherein protrusions are formed at both ends of the sheath crimping piece.

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