JP5334564B2 - Attaching the braided wire to the shield shell - Google Patents

Description

  The present invention relates to a mounting structure in which a conductive metal braided wire is electrically connected to a conductive metal shield shell, and an electrically conductive metal braided wire is electrically connected to a conductive metal shield shell. It is related with the attachment method attached so that it may connect.

  Various electronic devices are mounted on vehicles such as automobiles. A wire harness for supplying electric power, a control signal, and the like to an electronic device is routed in the automobile, and the wire harness includes a plurality of electric wires and a connector to which these electric wires are attached.

  In automobiles such as electric vehicles (EV), hybrid vehicles (HEV), and fuel cell vehicles, three-phase AC motors are sometimes used as driving motors. Since high-voltage power is supplied, electrical noise leaks from the terminal brackets of the wires and connectors that supply power to the motor, and other wires and other There was a problem that electrical noise flowed into the terminal fittings.

  As a technique for solving the above-mentioned problem, the leading end of the braided wire is folded back from the inner peripheral side to the outer peripheral side of the retaining ring arranged in front of the caulking ring and overlapped in the radial direction. There is a shield connector that mechanically crimps the caulking ring and fixes the braided wire after the portion is sandwiched between the shield shell and the caulking ring (see, for example, Patent Document 1 and Patent Document 2).

  However, the shield connector described above requires a plurality of parts such as a retaining ring and a caulking ring in order to fix the braided wire to the shield shell. For this reason, the number of parts is increased, and there is a problem that it is difficult to increase the manufacturing cost and reduce the weight. In addition, since the number of parts is large, the number of processes during assembly work and dismantling work increases, and the work process becomes complicated. Moreover, after crimping the braided wire with a caulking ring, a step of cutting the braided wire protruding from the opening of the shield shell is required.

JP 2002-329557 A JP 2005-276664 A

  The present invention has been made in view of the above-described circumstances, and the object thereof is to ensure that the braided wire is attached to the shield shell without requiring a complicated configuration or complicated assembly work for attaching the braided wire to the shield shell. An object of the present invention is to provide a braided wire attachment structure to a shield shell and a method for attaching a braided wire to a shield shell that can be connected and can be reduced in cost and weight.

To achieve the above mentioned object, the mounting method of the present invention is characterized by the following (1).
( 1 ) An attachment method for attaching a conductive metal braided wire formed in a hollow cylindrical shape to a conductive metal shield shell having a hollow cylindrical portion,
The open end of the tubular portion forming the end portion of the shield shell, so as to face the outer peripheral surface of the tubular portion, so that the and away from the outer peripheral surface toward the other end side of the shield shell The flange part is formed by folding back to
The shield shell from the other end side of the shield shell so that an attachment portion formed to protrude outward from the outer peripheral surface to the other end portion of the shield shell is positioned inward of the braided wire. In the state where the braided wire is extended to one end of the tube, the annular end of the braided wire is inserted into the recess between the outer peripheral surface of the tubular portion and the flange portion,
The annular end portion is pressed against the cylindrical portion by the flange portion and is crimped, and the inner and outer peripheral surfaces of the braided wire portion protruding from the concave portion are reversed along the extending direction of the braided wire.

In the mounting method of ( 1 ) above, the flange portion is formed by folding the opening end portion of the cylindrical portion of the shield shell so as to face the outer peripheral surface of the cylindrical portion, and the annular end portion of the braided wire is formed into a cylindrical shape. Arranged in the recess between the outer peripheral surface of the portion and the flange portion, and is crimped to the cylindrical portion by pressing the flange portion, and the inner and outer peripheral surface of the portion of the braided wire extending from the recess is extended in the direction of the braided wire Therefore, the braided wire is fixed to the shield shell without using parts for locking the braided wire, which are required in the conventional shield connector mounting structure, such as a retaining ring and a caulking ring. be able to. Moreover, since parts such as a retaining ring and a caulking ring are not required, the manufacturing cost can be reduced and the weight can be reduced. Moreover, since the number of parts can be reduced, the decomposability at the time of dismantling work is improved, and as a result, the recyclability of the parts material is improved. Further, since the end of the braided wire is disposed in the concave portion of the shield shell, a step of cutting an excess portion of the braided wire as in the conventional mounting structure such as a shield connector becomes unnecessary.
Further, in the above attachment method ( 1 ), since the flange portion is formed by folding the opening end portion outside the cylindrical portion, the braid is formed in the concave portion between the outer peripheral surface of the cylindrical portion and the flange portion. The end of the wire can be easily inserted .

  According to the present invention, a complicated configuration for attaching the braided wire to the shield shell and a complicated assembly operation are not required, and the braided wire can be reliably connected to the shield shell, and cost reduction and weight reduction are achieved. be able to.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of a main part of a shield shell to which a braided wire according to a first embodiment of the present invention is attached and a member to be attached to which the shield shell is attached, and FIG. 2 is a view before attaching the braided wire. 3 is an exploded perspective view of the shield shell and the braided wire, FIG. 3 is a schematic diagram showing the relationship between the shield shell and the braided wire, and FIG. 4 is a diagram showing the movement of the braided wire from the other end of the shield shell toward one end of the shield shell. FIG. 5 is a cross-sectional view showing a state in which the annular end of the braided wire is inserted into the recess at one end of the shield shell, and FIG. 5 shows that the flange portion is crimped over the entire circumference by a crimping die, and the inside of the recess is pressed by the flange portion. FIG. 6 is a cross-sectional view showing a state in which the annular end of the braided wire is crimped to the cylindrical portion, and FIG. 6 is taken out from the crimping die of FIG. It is a cross-sectional view for explaining the use of braided wire shielded shell inverted state along the extension direction of the line. FIG. 7 is a view for explaining the use of the shield shell with a braided wire according to the second embodiment of the present invention, which is formed by folding the opening end of the tubular portion inside the tubular portion. The inner and outer peripheral surfaces of the portion protruding from the concave portion of the braided wire in which the annular end is crimped to the tubular portion by pressing with the flange portion are crimped over the entire circumference by another crimping die. It is sectional drawing of the shield shell with a braided wire of the state reversed along the extension direction of a line.

<First Embodiment>
As shown in FIG. 1, the first embodiment of the mounting structure according to the present invention is made of a conductive metal formed in a hollow cylindrical shape on a conductive metal shield shell 1 having a hollow cylindrical portion 11. The braided wire 2 is attached so as to be electrically connected. Further, as shown in FIG. 2, the flange portion 13 is formed by folding the opening end portion of the cylindrical portion 11 forming one end portion of the shield shell 1 outward so as to face the outer peripheral surface of the cylindrical portion 11. Has been. The annular end portion of the braided wire 2 is disposed in the recess 13 a between the outer peripheral surface of the tubular portion 11 and the flange portion 13, and is crimped to the tubular portion 11 by pressing the flange portion 13.

The mounting structure thus configured will be described in detail below.
The shield shell 1 further includes an attachment portion 12 formed at the other end of the cylindrical portion 11. The shield shell 1 is formed, for example, by pressing a cylindrical conductive metal material. The flange portion 13 is formed over the entire circumference of the outer edge that defines the opening at one end of the cylindrical portion 11, and the mounting portion 12 is provided over the entire circumference of the outer edge that defines the opening at the other end of the cylindrical portion 11. The flange portion 13 and the attachment portion 12 protrude outward. The mounting portion 12 is provided with a pair of screw holes 12a, and these screw holes 12a are for screwing with screws 30 (see FIG. 6) for mounting the mounting portion 12 to the mounted member 3. is there.

  As shown in FIG. 1, the mounted member 3 includes a pair of screw holes 3 a and an insertion hole 3 b. The attached member 3 is an outer wall arranged in the vertical direction of the shield case, and is formed of a conductive metal material. A three-phase AC motor or the like is accommodated in the shield case, and power from the AC / DC converter is supplied to the AC motor via the electric wire WH (see FIG. 6) inserted through the insertion hole 3b. The When the attachment portion 12 of the shield shell 1 is overlapped with the attached member 3, the screw hole 12a of the attachment portion 12 communicates with the screw hole 3a of the attachment member 3, and screws 30 (see FIG. 6) Is inserted and screwed.

  The braided wire 2 is a shield member that is formed of a woven wire made of a conductive metal material such as copper, and has flexibility. As a whole, the braided wire 2 is formed in a cylindrical shape that can be expanded in a bag shape, and a plurality of electric wires WH (see FIG. 6) are inserted into the inside thereof. As shown in FIGS. 4 to 6, the braided wire 2 is attached to the shield shell 1 in a state where the inner diameter of the end portion is widened. Specifically, as shown in FIG. 6, the end 2 a of the braided wire 2 is sandwiched and crimped between the flange portion 13 of the shield shell 1 and the outer peripheral surface of the tubular portion 11. Since the braided wire 2 covers the electric wire WH, the electric wire WH is electromagnetically shielded from noise such as electromagnetic waves from the outside of the braided wire 2, or the braided wire 2 is electromagnetic so that noise such as electromagnetic waves does not leak from the electric wire WH to the outside. Shield.

  The electric wire WH has a core wire made of a conductive metal material and a covering portion made of an insulating synthetic resin and covering the outer peripheral surface of the core wire. The electric wire WH is electrically connected to an AC / DC converter, for example.

  When the shield shell 1 to which the braided wire 2 is attached is screwed to the member 3 to be attached, electrical noise that leaks to the outside from the electric wire WH inside them, and electrical noise that flows into the interior, The braided wire 2, the shield shell 1, and the attached member 3 are grounded.

  Next, a method for attaching the braided wire 2 to the shield shell 1 will be described. The shield shell 1 is press-molded into a shape as shown in FIGS. 2 and 3 in advance. First, as shown in FIG. 3, the braided wire 2 having a widened opening on the annular end 2a side is arranged so as to face the flange portion 12 of the shield shell 1, and the braided wire 2 is arranged in the direction of arrow A. Move to cover shield shell 1. Specifically, as shown in FIG. 4, the annular end 2 a of the braided wire 2 is inserted into the recess 13 a of the shield shell 1. Then, as shown in FIG. 5, with the end 2a of the braided wire 2 inserted into the recess 13a, the pair of halves 4a of the crimping die 4 are moved in the direction toward the tubular portion 11 of the shield shell 1. Then, the flange portion 13 is pressed against the outer peripheral surface side of the tubular portion 11 using the half portion 4 a, and the end portion 2 a of the braided wire 2 is crimped to the outer peripheral surface of the tubular portion 11 by the flange portion 13. Then, after crimping the shield shell 1 and the braided wire 2 in this manner, as shown in FIG. 6, the braided wire 2 is reversed (that is, turned over), and the braided wire 2 is used to open the flange 13 side from the opening. Cover the drawn wire WH.

  In the mounting structure configured as described above, the braided wire 2 is shielded without using parts for locking the braided wire required in the conventional mounting structure such as a shield connector such as a retaining ring and a caulking ring. It can be fixed to the shell 1. Moreover, since parts such as a retaining ring and a caulking ring are not required, the manufacturing cost can be reduced and the weight can be reduced. Moreover, since the number of parts can be reduced, the decomposability at the time of dismantling work is improved, and as a result, the recyclability of the parts material is improved. Further, since the end 2a of the braided wire 2 is disposed in the recess 13a of the shield shell 1, a step of cutting an excess portion of the braided wire as in a conventional shield connector is not necessary.

  Further, in the shield shell mounting structure configured as described above, the flange portion 13 of the shield shell 1 is formed by folding the opening end portion of the cylindrical portion 11 to the outside of the cylindrical portion 11, so that the concave portion 13 a is formed. The end 2a of the braided wire 2 can be easily inserted into the inside.

Second Embodiment
Next, a second embodiment of the mounting structure according to the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the component same as 1st Embodiment, the equivalent code | symbol is attached | subjected about the component close | similar to the component of 1st Embodiment, and the description is abbreviate | omitted or simplified.

  As shown in FIG. 7, the flange portion 13 ′ of the shield shell 1 ′ opposes the opening end portion of the tubular portion 11 ′ that forms one end portion of the shield shell 1 ′ to the inner peripheral surface of the tubular portion 11 ′. It is formed by folding inward. The flange portion 13 ′ is also formed over the entire circumference of the outer edge that defines the opening at one end of the cylindrical portion 11 ′. Further, a recess 13a 'is formed between the inner peripheral surface of the cylindrical portion 11' and the flange portion 13 '. The annular end of the braided wire 2 is disposed in the recess 13a 'and is crimped to the tubular portion 11' by pressing the flange portion 13 '.

  The attachment method according to the second embodiment is substantially the same as the attachment method of the first embodiment, but is slightly different because the flange portion 13 ′ is folded back toward the inside of the tubular portion 11 ′. For the shield shell 1 ', a pre-pressed one similar to the attachment method of the first embodiment is used. In short, the shield shell 1' is press-formed into a shape in which the annular end of the braided wire 2 can be inserted into the recess 13a '. Is used. First, the braided wire 2 is passed through the hollow portion of the cylindrical portion 11 ′ of the shield shell 1 ′, the mouth is widened to the annular end 2 a side, and the annular end 2 a of the braided wire 2 is connected to the shield shell 1 ′. Into the recess 13a '. Then, with the end 2a of the braided wire 2 inserted into the recess 13a ′, the flange portion 13 ′ is pressed against the inner peripheral surface of the tubular portion 11 ′ using another crimping die (not shown). The end portion 2a of the braided wire 2 is crimped to the outer peripheral surface of the tubular portion 11 ′ by “. Then, after crimping the shield shell 1 'and the braided wire 2 in this way, as shown in FIG. 7, the braided wire 2 is reversed (that is, turned over), and the braided wire 2 causes the flange 13' side to be reversed. The electric wire drawn from the opening (see FIG. 6) is covered.

  In the mounting structure configured as described above, the braided wire 2 is shielded without using parts for locking the braided wire required in the conventional mounting structure such as a shield connector such as a retaining ring and a caulking ring. It can be fixed to the shell 1 '. Moreover, since parts such as a retaining ring and a caulking ring are not required, the manufacturing cost can be reduced and the weight can be reduced. Moreover, since the number of parts can be reduced, the decomposability at the time of dismantling work is improved, and as a result, the recyclability of the parts material is improved. Further, since the end 2a of the braided wire 2 is disposed in the recess 13a 'of the shield shell 1', a step of cutting an excess portion of the braided wire as in the conventional shield connector is not necessary.

  In the mounting structure thus configured, the flange portion 13 ′ of the shield shell 1 ′ is folded inward so that the opening end portion of the cylindrical portion 11 ′ is opposed to the inner peripheral surface of the cylindrical portion 11 ′. Since the flange portion 13 ′ does not protrude from the cylindrical portion 11 ′ of the shield shell 1 ′, the outer dimension of the shield shell 1 ′ can be reduced. The size of the entire structure can be reduced.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  In the above-described embodiment, the example in which the mounting portion of the shield shell is fixed to the mounted member with a screw has been described. However, the present invention is not limited to screwing. As long as the mounting portion can be fixed to the member to be mounted, for example, fixing by a notch and a locking projection or fixing by an engaging member may be used. Or you may fix an attaching part to a to-be-attached member using a volt | bolt and a nut.

  In addition, instead of using the braided wire used as the shield member in the above embodiment, it is formed of a woven wire made of a conductive metal material such as copper, for example, and has flexibility and is expanded in a bag shape in advance. Even if a sheet-like material that is not formed into a possible cylindrical shape is rolled into a hollow cylindrical shape, it can be implemented in the same manner as described above.

  Moreover, in the said embodiment, although the flange part is formed over the substantially whole periphery of the outer edge which defines the opening of the one end part of a cylindrical part, it is not limited to this, What is formed over the substantially whole periphery of the said outer edge It may be. Alternatively, for example, the flange portion may be press-molded into a plurality of pieces such as a rotating saw tooth, and a braided wire may be crimped at a plurality of locations.

It is a principal part perspective view of the shield shell to which the braided wire which concerns on 1st Embodiment of this invention was attached, and the to-be-attached member used as the attachment destination to which this shield shell is attached. It is a disassembled perspective view of the shield shell and the braided wire before attaching the braided wire. It is a schematic diagram which shows the relationship between a shield shell and a braided wire. It is sectional drawing which shows the state which inserted the cyclic | annular end part of the braided wire into the recessed part of the one end part of a shield shell, moving a braided wire toward the one end part of a shield shell from the other end part side of a shield shell. It is sectional drawing which shows the state by which the flange part was crimped over the perimeter by the crimping | compression-bonding die, and the cyclic | annular end part of the braided wire in a recessed part was crimped | bonded to the cylindrical part by the pressing by this flange part. Sectional drawing for demonstrating use of the shield shell with a braided wire of the state which took out from the crimping | compression-bonding die | dye of FIG. 5, and the inner peripheral surface of the part of the braided wire which protruded from the recessed part was reversed along the extension direction of this braided wire It is. It is a figure for demonstrating use of the shield shell with a braided wire which concerns on 2nd Embodiment of this invention, Comprising: The flange part formed by folding the opening edge part of a cylindrical part inside a cylindrical part is others The inner and outer peripheral surfaces of the portion protruding from the concave portion of the braided wire that is crimped over the entire circumference by the crimping die and pressed by the flange portion and the annular end is crimped to the tubular portion in the extending direction of the braided wire It is sectional drawing of the shield shell with a braided wire of the state reversed along.

Explanation of symbols

1: Shield shell 11: Cylindrical portion 12: Mounting portion 12a: Screw hole 13: Flange portion 13a: Recessed portion 2: Braided wire 2a: End portion of braided wire 3: Mounted member 3a: Screw hole 3b: Insertion hole 30: Screw WH: Multiple wires

Claims (1)

An attachment method for attaching a conductive metal braided wire formed in a hollow cylindrical shape to a conductive metal shield shell having a hollow cylindrical portion,
The open end of the tubular portion forming the end portion of the shield shell, so as to face the outer peripheral surface of the tubular portion, so that the and away from the outer peripheral surface toward the other end side of the shield shell The flange part is formed by folding back to
The shield shell from the other end side of the shield shell so that an attachment portion formed to protrude outward from the outer peripheral surface to the other end portion of the shield shell is positioned inward of the braided wire. In the state where the braided wire is extended to one end of the tube, the annular end of the braided wire is inserted into the recess between the outer peripheral surface of the tubular portion and the flange portion,
The annular end portion is pressed against the cylindrical portion by the flange portion to be crimped, and the inner and outer peripheral surfaces of the braided wire portion that protrudes from the concave portion are reversed along the extending direction of the braided wire. And mounting method.

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