JP6298610B2 - Shield structure - Google Patents

Description

  The present invention relates to a shield structure realized by a shield shell and a shield member, and particularly to a shield member fixing structure for attaching a shield member to a shield shell constituting a shield connector.

  A shield connector is used for a wire harness used for a hybrid electric vehicle (HEV), an electric vehicle (EV), or the like. The shield connector includes a housing that houses a terminal connected to the end of the electric wire, and a shield shell that is assembled to the housing. The shield shell is electrically connected to a braid that is sheathed on the electric wire.

  As a structure for fixing the braid to the shield shell, the end of the braid is covered with a cylindrical fixing portion formed in the shield shell through which an electric wire is inserted, and a metal ring is caulked on the outer periphery of the braid (Patent Document) 1 and 2), and what crimps the crimping piece formed in the shield shell from the outside of the braid is known (see Patent Document 3).

JP 2010-268562 A JP2013-12403A JP 2013-115072 A

  By the way, a shield shell having a cylindrical fixing portion to which a braid is fixed by caulking a metal ring or caulking pieces is formed by drawing press, die casting or the like. When these methods are employed to manufacture a shield ring, the manufacturing cost increases due to the complexity of the manufacturing method. For this reason, the shield shell which can be manufactured by a simpler method is calculated | required.

  In addition, the fixing structure in which the braid is fixed by crimping a metal ring or caulking piece to the cylindrical fixing part of the shield shell is difficult to control the fixing strength, and the braid is shielded when it is not sufficiently fixed. There is a risk of detachment from the fixed part of the shell.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to produce a shield shell by a simple method and to shield a shield member easily and reliably on the shield shell. To provide a structure.

In order to achieve the above-described object, the shield structure according to the present invention is characterized by the following (1) to ( 7 ) .
( 1 ) a hollow cylindrical shield member;
A shield shell having a housing accommodating portion in which the housing is accommodated, and a shield member attaching portion whose outer periphery is covered by the shield member;
An annular member for fixing the shield member to the shield member mounting portion by rotating and tightening the shield member mounting portion whose outer periphery is covered by the shield member;
With
The shield member mounting portion includes a bottom wall extending from the housing accommodating portion, a first side wall extending from one end of the bottom wall, and a second wall extending from the other end of the bottom wall. A sidewall,
In the shield member mounting portion in which the first side wall and the second side wall are curved so that the front end portions of the first side wall and the second side wall approach each other, an external force acts on the shield member mounting portion. In the state where it is not, the tip portions of the first side wall and the second side wall are separated from each other,
The first side wall is formed with a first abutting surface at the tip,
A second abutting surface is formed at the tip of the second side wall,
The annular member tightens the bottom wall, the first side wall, and the second side wall in a state where the first abutting surface and the second abutting surface are in contact with each other.
Shield structure characterized by that.
( 2 ) The first side wall includes a part of the first side wall including the tip thereof that is bent with respect to the other part of the first side wall, and is located on the second side wall side in the part. A side surface is formed as the first abutting surface;
The second side wall includes a part of the second side wall including the tip that is bent with respect to the other part of the second side wall, and a side surface located on the first side wall side in the part. , Formed as the second abutment surface,
The shield structure as described in ( 1 ) above, wherein
( 3 ) A part of the first side wall including the tip is bent toward the bottom wall with respect to the other part of the first side wall.
A part of the second side wall including the tip is bent toward the bottom wall with respect to the other part of the second side wall.
The shield structure as described in ( 2 ) above, wherein
( 4 ) One of the first abutting surface and the second abutting surface is formed with a convex portion projecting toward the mating abutting surface,
On the other of the first abutting surface and the second abutting surface, a recess that fits into the convex portion formed on the mating abutting surface is formed.
The shield structure according to any one of ( 1 ) to ( 3 ) above, wherein
( 5 ) The annular member is a tie band that can be tightened by a binding tool.
The shield structure according to any one of (1) to ( 4 ) above, characterized in that:
( 6 ) The bottom wall, the first side wall, and the second side wall are formed with a restricting portion that restricts a position of the annular member.
The shield structure according to any one of (1) to ( 5 ) above, characterized in that:
( 7 ) Two ridges are formed along the circumferential direction on the bottom wall, the first side wall, and the second side wall,
The annular member circulates around the shield member attaching portion in a state located between the two ridges,
The shield structure according to any one of (1) to ( 5 ) above, characterized in that:

In the shield structure having the configuration (1), the bottom wall extends from the housing accommodating portion, and the first side wall and the second side wall extend from the bottom wall. The shield shell can be formed by press working. For this reason, the manufacturing cost accompanying manufacture of a shield shell can be reduced.
In addition, when the shield member attachment portion is tightened by the annular member, a restoring force acts on the shield member attachment portion in a direction in which the distal end portions of the first side wall and the second side wall are about to separate. An external force from the inside to the outside acts on the shield member by this restoring force. On the other hand, an external force consisting of a fastening force directed from the outside to the inside is applied to the shield member by the annular member. Thus, since the shield member has a configuration in which an external force acts from the inside and the outside, the shield member is sandwiched and fixed between the shield member attaching portion and the annular member with a stronger gripping force .
Furthermore, in the shield structure having the above configuration ( 1 ), the first abutting surface is formed on the first side wall, and the second abutting surface is formed on the second side wall. It becomes easy for the end portions of the side wall and the second side wall to contact each other. For this reason, the workability | operativity which attaches a shield member to a shield shell improves.
In the shield structure having the configuration ( 2 ), the first abutting surface of the first side wall and the second abutting surface of the second side wall can be formed by press working by a relatively simple construction method. . For this reason, the manufacturing cost accompanying manufacture of a shield shell can be reduced.
In the shield structure having the above configuration ( 3 ), the first abutting surface consisting of a part of the first side wall and the first abutting surface consisting of a part of the second side wall are the outer periphery where the shield member is located. It bends inward on the opposite side. For this reason, the tips of the first side wall and the second side wall do not come into contact with the shield member to damage the shield member.
In the shield structure having the above configuration ( 4 ), when the shield member mounting portion is tightened with the annular member, the positions of the first abutting surface and the second abutting surface are obtained by fitting the convex portion into the concave portion. Deviation can be prevented.
In the shield structure having the above configuration ( 5 ), the fastening force with which the tie band tightens the shield member mounting portion can be maintained at a constant load by using the annular member as a tie band that can be tightened with a bundling tool. As in the prior art, when tightening with a metal ring, caulking is performed so that a part of the ring is pinched together, and the load is managed by the height of the pinched portion. As described above, when the shield member is fixed by the metal ring, it is difficult to manage the load, and the fixing strength of the shield member may vary. On the other hand, in this invention, compared with the case where a metal ring is swaged and tightened as in the prior art, the load management becomes simple and the fixing strength of the shield member can be stabilized.
In the shield structure having the above configuration ( 6 ), the workability when fixing the shield member can be improved by positioning the annular member by the restricting portion. Moreover, it can prevent that an annular member slips out from a shield member attaching part. Thereby, it can prevent that the shield member currently fixed to the shield member attaching part comes off from the shield member attaching part.
In the shield structure having the configuration ( 7 ), the workability when fixing the shield member can be improved by positioning the annular member with the two ridges. Moreover, it can prevent that an annular member slips out from a shield member attaching part. Thereby, it can prevent that the shield member currently fixed to the shield member attaching part comes off from the shield member attaching part.

  ADVANTAGE OF THE INVENTION According to this invention, the shield structure which can fix a shield member to a shield shell easily and reliably at low cost can be provided.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a perspective view of a shield connector for explaining a shield structure according to the first embodiment. FIG. 2 is a perspective view seen from the back side of the shield connector for explaining the shield structure according to the first embodiment. FIG. 3 is a cross-sectional view of the shield connector illustrating the shield structure according to the first embodiment. FIG. 4 is an exploded perspective view of the shield connector for explaining the shield structure according to the first embodiment. FIG. 5 is a perspective view of a shield shell constituting the shield connector. FIG. 6 is a plan view of a shield shell constituting the shield connector. FIG. 7 is a cross-sectional view of the braid fixing portion of the shield shell. FIG. 8 is a perspective view of a butt portion between the first butt surface of the first side wall and the second butt surface of the second side wall. FIG. 9A and FIG. 9B are diagrams showing a procedure for fixing the braid, and are perspective views of the shield connector, respectively. FIG. 10A and FIG. 10B are diagrams showing a braid fixing procedure, and are cross-sectional views of the braid fixing part, respectively. FIG. 11A and FIG. 11B are diagrams showing a braid fixing procedure and are perspective views of the braid fixing part, respectively. FIGS. 12 (a) and 12 (b) are diagrams showing a procedure for fixing the braid, where the first butted surface of the first side wall and the second butted surface of the second side wall are in contact with each other. FIG. FIG. 13 is a perspective view of a shield shell for explaining the shield structure according to the second embodiment. FIG. 14 is a cross-sectional view of the shield connector for explaining the shield structure according to the second embodiment. FIG. 15 is an enlarged view of part A in FIG. 16 (a) and 16 (b) are diagrams showing a braid fixing procedure and are side views of the shield connector, respectively.

  Hereinafter, an example of an embodiment according to the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a perspective view of a shield connector for explaining a shield structure according to the first embodiment. FIG. 2 is a perspective view seen from the back side of the shield connector for explaining the shield structure according to the first embodiment. FIG. 3 is a cross-sectional view of the shield connector illustrating the shield structure according to the first embodiment. FIG. 4 is an exploded perspective view of the shield connector for explaining the shield structure according to the first embodiment. FIG. 5 is a perspective view of a shield shell constituting the shield connector. FIG. 6 is a plan view of a shield shell constituting the shield connector. FIG. 7 is a cross-sectional view of the braid fixing portion of the shield shell. FIG. 8 is a perspective view of a butt portion between the first butt surface of the first side wall and the second butt surface of the second side wall.

[Configuration of Each Member of First Embodiment]
As shown in FIGS. 1 to 4, the shield connector 10 to which the shield structure according to the present embodiment is applied is connected to end portions of a plurality of (three in this example) cables 11. A hollow cylindrical braid 12 is sheathed on the cable 11, and the cable 11 is shielded by the braid 12. The shield connector 10 is connected to a connection portion 3 provided in the housing 2 of the unit 1 which is various devices such as a motor and an inverter, and is fixed by a bolt 4.

  First, the shield connector 10 will be described in detail. The shield connector 10 includes a housing 21, a terminal 22, a front holder 23, a packing 24, a rear holder 25, and a shield shell 26.

  The housing 21 is molded from a synthetic resin. The housing 21 has a mounting portion 31 to be fitted into the connection hole 3a of the connection portion 3 of the housing 2 and a cable introduction portion 32 into which the cable 11 is introduced, and is formed in an L shape in a side view. . A terminal accommodating chamber for accommodating the terminal 22 is formed in the mounting portion 31. In addition, the mounting portion 31 is formed with a fitting recess 33 that accommodates the front holder 23. The cable introduction portion 32 is formed with a cable through hole that communicates with the terminal accommodating chamber of the mounting portion 31 and is penetrated by the cable 11.

  The terminal 22 is formed from copper or a copper alloy. The terminal 22 is formed in an L shape having a tab portion 22a and a joint portion 22b. The terminal 22 is connected to the end portion of each cable 11 at the joint portion 22b by various methods such as laser joining and ultrasonic joining. Thereby, conduction between the terminal 22 and the conductor of the cable 11 is achieved. These terminals 22 are accommodated in the mounting portion 31 of the housing 21. The terminal 22 accommodated in the mounting portion 31 has a tab portion 22 a protruding from the mounting portion 31 of the housing 21.

  The front holder 23 is molded from synthetic resin, and is fitted into the housing 21 by being fitted into a fitting recess 33 formed in the mounting portion 31 of the housing 21. A plurality of holding holes 35 are formed in the front holder 23, and the tab portions 22 a of the terminals 22 are inserted into these holding holes 35. Thus, the tab 22 a of the terminal 22 is held by the front holder 23. Then, when the front holder 23 is attached to the housing 21, the terminal 22 is held by the housing 21.

  The packing 24 is formed of an elastic material such as rubber, and is formed in an annular shape. The packing 24 is attached to the mounting portion 31 of the housing 21 and arranged on the outer peripheral side of the mounting portion 31.

  The rear holder 25 is molded from a synthetic resin and is attached to the cable introduction portion 32 of the housing 21 from the back side. The rear holder 25 is formed with the same number of holding grooves 37 as the cable 11, and the cable 11 is arranged in each holding groove 37 of the rear holder 25 by attaching the rear holder 25 to the cable introducing portion 32 of the housing 21. Retained.

  The shield shell 26 is formed from a conductive metal plate, and is attached to the housing 21 from the back side. Hereinafter, the structure of the shield shell 26 will be described in detail.

  As shown in FIGS. 5 and 6, the shield shell 26 has a housing accommodating portion 41 and a braided attachment portion 42. The housing accommodating portion 41 includes a bottom plate portion 44, a side plate portion 45 erected from both side edge portions of the bottom plate portion 44 toward the housing 21, and an edge portion on the opposite side of the braid mounting portion 42 in the bottom plate portion 44. And an end face plate portion 46 erected on the 21 side.

  In the housing accommodating portion 41, the housing 21 to which the rear holder 25 is attached is fitted and accommodated in a portion surrounded by the bottom plate portion 44, the side surface plate portion 45, and the end surface plate portion 46. Each side plate 45 is formed with a flange 48 extending laterally. Bolt insertion holes 49 are formed in the flanges 48, and the bolts 4 are inserted into the bolt insertion holes 49.

  The braid mounting portion 42 is formed at a portion connected to the bottom plate portion 44 of the housing accommodating portion 41. The braid mounting portion 42 includes a bottom wall 50, a first side wall 51, and a second side wall 52. The bottom wall 50 extends from the bottom plate portion 44 of the housing accommodating portion 41 to the side opposite to the side where the end face plate portion 46 is located. The first side wall 51 extends from one side end of the bottom wall 50. The second side wall 52 extends from the other side end of the bottom wall 50. The first side wall 51 is curved on the side close to the bottom wall 50 so that the tip is directed to the second side wall 52 side. Further, the second side wall 52 is curved on the side close to the bottom wall 50 so that the tip is directed to the first side wall 51 side. As described above, in the braided attachment portion 42, the first side wall 51 and the second side wall 52 are curved so that the front end portions of the first side wall 51 and the second side wall 52 approach each other. Further, the first side wall 51 has a part on the front end side of the first side wall 51 excluding a curved portion substantially parallel to the bottom wall 50. Similarly, in the second side wall 52, a part on the tip side of the second side wall 52 excluding a curved portion is substantially parallel to the bottom wall 50.

  Further, in the braided attachment portion 42, the front end portions of the first side wall 51 and the second side wall 52 are separated from each other in a state where no external force is applied. A gap G is formed between the end portions of the two side walls 52. A first abutting surface 53 is formed at the tip of the first side wall 51, and a second abutting surface 54 is formed at the tip of the second side wall 52. In the first side wall 51, a part of the first side wall 51 including the tip is bent toward the bottom wall 50 with respect to the other part of the first side wall 51, and the second side wall 52 in this part. A side surface located on the side is formed as a first abutting surface 53. Similarly, the second side wall 52 is formed such that a part of the second side wall 52 including the tip is bent toward the bottom wall 50 with respect to the other part of the second side wall 52, and the first side wall 52 in this part. A side surface located on the side wall 51 side is formed as a second abutting surface 54. The first butting surface 53 and the second butting surface 54 are arranged to face each other with a gap G therebetween.

  The first abutting surface 53 formed on the first side wall 51 is formed with a convex portion 53 a that projects toward the second abutting surface 54. Further, the second abutting surface 54 is formed with a concave portion 54a into which the convex portion 53a formed on the first abutting surface 53 is fitted.

  In the braided attachment portion 42, a portion surrounded by the bottom wall 50, the first side wall 51, and the second side wall 52 is a cable housing space portion CS, and the cable 11 passes through the cable housing space portion CS. Has been accommodated.

  The shield shell 26 includes a first side wall between the bottom wall 50 of the braid mounting portion 42 and a bottom plate portion 44 which is a part of the housing accommodating portion 41 located on the same plane as the bottom wall 50. A first slit 55 extending toward one end of the bottom wall 50 in the direction in which 51 extends, and a second slit extending toward the other end of the bottom wall 50 in the direction in which the second side wall 52 extends. 56 are formed. Further, the bottom plate portion 44 that is a part of the housing accommodating portion 41 has a third slit 57 that extends toward the base side of the first slit 55 and communicates with the first slit 55, and a second slit. A fourth slit 58 extending toward the base side of 56 and communicating with the second slit 56 is formed. The third slit 57 and the fourth slit 58 are curved toward the center of the bottom plate portion 44 of the housing accommodating portion 41.

  The braid 12 is formed by hollowing a strand made of copper or a copper alloy into a hollow cylinder. The braid 12 is a member corresponding to a shield member. Examples of the braid 12 include a braided wire obtained by plating a stretchable fiber such as nylon. The front end portion of the braid 12 in the longitudinal direction is put on the braid mounting portion 42 of the shield shell 26. As a result, the outer periphery of the braid mounting portion 42 is covered by the braid 12. The shield member of the present invention is not limited to braiding. A conductive member (such as a metal foil) formed in a hollow cylindrical shape can be applied as the shield member of the present invention.

  As shown in FIG. 7, the annular member 61 is wound around the braid mounting portion 42 whose outer periphery is covered by the braid 12. The annular member 61 is, for example, a tie band formed from a synthetic resin, and includes a band portion 62 formed in a linear shape and a lock portion 63 that locks the band portion 62. The lock part 63 is formed with a lock hole, and the band part 62 is inserted into the lock hole of the lock part 63. The lock part 63 locks the band part 62 inserted into the lock hole, and restricts movement in the direction opposite to the insertion direction. The annular member 61 is wound around the braid mounting portion 42 whose outer periphery is covered by the braid 12 and is tightened by a bundling tool. As a result, the annular member 61 is circulated and tightened to the braid mounting portion 42 whose outer periphery is covered by the braid 12, so that the braid 12 is fixed to the braid mounting portion 42, and the shield shell 26 and the braid 12 are electrically connected. Has been. The annular member of the present invention is not limited to a tie band. A member having a function of turning and braiding the braided attachment portion 42 and maintaining the state thereof can be applied as the shield member of the present invention. A shield ring can also be used as an annular member.

  In the state where the braid mounting portion 42 is tightened by the annular member 61 and the braid 12 is fixed in this manner, the braid mounting portion 42 includes the first side wall 51 and the second side wall in which the gap G is formed. In this state, the first butting surface 53 and the second butting surface 54 of each of the leading ends of 52 are in contact with each other. That is, the annular member 61 clamps the bottom wall 50, the first side wall 51, and the second side wall 52 in a state where the first abutting surface 53 and the second abutting surface 54 are in contact with each other.

  Thus, the restoring force acts on the braided attachment portion 42 tightened by the annular member 61 in such a direction that the leading end portions of the first side wall 51 and the second side wall 52 are about to leave. Therefore, as shown in FIG. 7, an external force Fo from the inside to the outside acts on the braid 12 by this restoring force. On the other hand, an external force Fi that is a fastening force directed from the outside to the inside is applied to the braid 12 by the annular member 61. Thus, the braid 12 is clamped by the external force Fo from the inside and the external force Fi from the outside, and is fixed to the braid mounting portion 42.

  Further, with the braid 12 fixed in this manner, as shown in FIG. 8, the convex portion 53 a formed on the first abutting surface 53 is a concave portion 54 a formed on the second abutting surface 54. Thus, the first side wall 51 and the second side wall 52 are positioned, and the first side wall 51 is aligned along the first butting surface 53 and the second butting surface 54. And the position shift which the 2nd side wall 52 moves can be prevented.

  The shield connector 10 is attached to the unit 1 by fitting the attachment portion 31 of the housing 21 into the connection hole 3a of the connection portion 3 of the housing 2, and can be electrically connected to the bus bar in the unit 1. Then, with the mounting portion 31 fitted in the connection hole 3 a, the bolt 4 is inserted into the bolt insertion hole 49 of the shield shell 26, and the bolt 4 is formed in the vicinity of the connection hole 3 a of the connection portion 3. By screwing to 3b, the shield connector 10 is fixed to the housing 2 of the unit 1, and the braid 12 is grounded to the GND of the unit 1 through the shield shell 26 (see FIG. 2).

  As described above, since the cable 11 is covered with the braid 12 and the shield shell 26, the shield connector 10 in which the braid 12 is fixed to the shield shell 26 realizes a good shield function.

[Procedure for fixing the braid to the shield shell]
Next, a procedure for fixing the braid 12 to the shield shell 26 of the shield connector 10 will be described.

  FIG. 9A and FIG. 9B are diagrams showing a procedure for fixing the braid, and are perspective views of the shield connector, respectively. FIG. 10A and FIG. 10B are diagrams showing a braid fixing procedure, and are cross-sectional views of the braid fixing part, respectively. FIG. 11A and FIG. 11B are diagrams showing a braid fixing procedure and are perspective views of the braid fixing part, respectively. FIGS. 12 (a) and 12 (b) are diagrams showing a procedure for fixing the braid, where the first butted surface of the first side wall and the second butted surface of the second side wall are in contact with each other. FIG.

  First, as shown in FIG. 9A, the longitudinal end of the braid 12 is put close to the braid mounting portion 42 of the shield shell 26. Then, as shown in FIG. 10A, the annular member 61 is wound around the periphery, and the band portion 62 of the annular member 61 is inserted into the lock hole of the lock portion 63.

  Here, since the first slit 55 and the second slit 56 are provided in the shield shell 26, rigidity when the first side wall 51 and the second side wall 52 are curved is reduced. For this reason, the work of attaching the braid 12 to the braid attaching part 42 can be easily performed. When the third slit 57 that communicates with the first slit 55 and the fourth slit 58 that communicates with the second slit 56 bend the first side wall 51 and the second side wall 52, The stress acting on the roots of the slit 55 and the second slit 56 is dispersed. For this reason, damage to the shield shell 26 is suppressed.

  At this time, since the annular member 61 is not tightened, no external force is applied to the braid mounting portion 42. For this reason, as shown in FIG. 9A, FIG. 10A, FIG. 11A, and FIG. 12A, the braid mounting portion 42 is provided on each of the first side wall 51 and the second side wall 52. The leading end is separated and a gap G is formed.

  From this state, the band part 62 is pulled with respect to the lock part 63 using a binding tool. In this way, as shown in FIGS. 9B, 10B, and 11B, the annular portion of the annular member 61 wound around the braid mounting portion 42 is reduced, and the braid 12 is covered. The braid mounting portion 42 is tightened from the periphery by the annular member 61.

  Then, the braid mounting portion 42 is elastically deformed, and as shown in FIGS. 10 (b) and 12 (b), the first abutting surface 53 and the second abutting surface 53 provided at the tip of the first side wall 51 are used. The second abutting surface 54 provided at the tip of the side wall 52 is abutted against each other. And the convex part 53a formed in the 1st abutting surface 53 is fitted by the recessed part 54a formed in the 2nd abutting surface 54, and the 1st side wall 51 and the 2nd side wall 52 are positioned. In addition, the movement of the first side wall 51 and the second side wall 52 along the first butting surface 53 and the second butting surface 54 is prevented.

  In this way, when tightened by the annular member 61, the external force Fo, which is a restoring force in a direction in which the tip portions of the first side wall 51 and the second side wall 52 are about to separate, and the annular member 61 from the outside to the inside. The braided attachment portion 42 is securely clamped and fixed by the external force Fi consisting of the facing fastening force.

[Effect of the first embodiment]
As described above, according to the shield structure according to the first embodiment, the housing accommodating portion 41 includes the side plate portion 45 extending from the bottom plate portion 44 and the end surface plate portion 46 extending from the bottom plate portion 44. The flange 48 extends from the side plate 45. The braided attachment portion 42 has a configuration in which the bottom wall 50 is extended from the bottom plate portion 44 of the housing accommodating portion 41 and the first side wall 51 and the second side wall 52 are extended from the bottom wall 50. . The shield shell 26 having this configuration is formed by folding a single metal flat plate at a desired location. For this reason, the shield shell 26 can be formed by press working by a relatively simple construction method. For this reason, the manufacturing cost accompanying manufacture of the shield shell 26 can be reduced.

  Further, when the braid mounting part 42 is tightened by the annular member 61, a restoring force acts on the braid mounting part 42 in the direction in which the respective distal end portions of the first side wall 51 and the second side wall 52 are about to separate. . An external force Fo from the inside to the outside acts on the braid 12 by this restoring force. On the other hand, an external force Fi consisting of a fastening force directed from the outside to the inside is applied to the braid 12 by the annular member 61. In this way, the braid 12 is configured such that the external forces Fo and Fi act from the inside and the outside, so that the braid 12 is sandwiched and fixed between the braid mounting portion 42 and the annular member 61 with a stronger gripping force.

  Further, in the braid mounting portion 42, the front end portions of the first side wall 51 and the second side wall 52 face each other, so that the front end portions of the first side wall 51 and the second side wall 52 can easily come into contact with each other. Become. For this reason, the workability of attaching the braid 12 to the shield shell 26 is improved.

  In particular, the first abutting surface 53 is formed on the first side wall 51, and the second abutting surface 54 is formed on the second side wall 52, so that the first side wall 51 and the second side wall 51 are formed. It becomes easy for the front-end | tip part of each 52 to contact | abut. For this reason, the workability of attaching the braid 12 to the shield shell 26 is improved.

  Moreover, the first abutting surface 53 of the first side wall 51 and the second abutting surface 54 of the second side wall 52 can be formed by press working with a relatively simple construction method. For this reason, the manufacturing cost accompanying manufacture of the shield shell 26 can be reduced.

  Further, the first abutting surface 53 formed of a part of the first side wall 51 and the first abutting surface 54 formed of a part of the second side wall 52 are opposite to the outer periphery on which the braid 12 is located. It is bent inward. For this reason, the tips of the first side wall 51 and the second side wall 52 do not come into contact with the braid 12 and the braid 12 is not damaged.

  Further, when the braid mounting portion 42 is tightened with the annular member 61, the convex portion 53a of the first abutting surface 53 is fitted into the concave portion 54a of the second abutting surface 54, whereby the first abutting It is possible to prevent displacement of the first side wall 51 and the second side wall 52 along the surface 53 and the second abutting surface 54.

  Further, by making the annular member 61 a tie band that can be tightened by a bundling tool, the fastening force with which the tie band tightens the braid mounting portion 42 can be maintained at a constant load. By the way, when tightening with a metal ring as in the prior art, caulking is performed so that a part of the ring is pinched together, and the load is managed by the height of the pinched part. As described above, when the braid is fixed by the metal ring, it is difficult to manage the load, and the fixing strength of the braid may vary. On the other hand, according to this embodiment, compared with the case where a metal ring is swaged and tightened as in the prior art, the load management becomes simpler, and the fixing strength of the braid 12 can be stabilized. it can.

  In the above embodiment, the convex portion 53a is formed on the first abutting surface 53 and the concave portion 54a is formed on the second abutting surface 54. However, the concave portion is formed on the first abutting surface 53, A convex portion that can be fitted into the concave portion may be formed on the second abutting surface 54.

  In the above embodiment, a part of the first side wall 51 on the front end side is substantially parallel to the bottom wall 50, and a part of the second side wall 52 on the front end side is substantially parallel to the bottom wall 50. It was. The present invention is not limited to this aspect.

  Moreover, in the said embodiment, although the 1st abutting surface 53 and the 2nd abutting surface 54 were formed by bending the front-end | tip part of the 1st side wall 51 and the 2nd side wall 52, this invention is 1st. The first butting surface 53 and the second butting surface 54 are not limited to those formed by this bending. The tip portions of the first side wall 51 and the second side wall 52 may be formed so as to be thicker than other portions, and the metal plate forming the shield shell 26 is sufficient in thickness. For example, the tip surfaces of the first side wall 51 and the second side wall 52 may function as the first butting surface 53 and the second butting surface 54.

  Moreover, in the said embodiment, the cyclic | annular member 61 demonstrated the form clamp | tightened in the state which the 1st abutting surface 53 and the 2nd abutting surface 54 contact | abutted. When the restoring force of the first side wall 51 and the second side wall 52 is large, the front end surfaces of the first side wall 51 and the second side wall 52 may be separated in a state where they are tightened by the annular member 61. Even in this case, the braid 12 is configured such that the external forces Fo and Fi act from the inside and the outside, so that the braid 12 is sandwiched and fixed between the braid mounting portion 42 and the annular member 61 with a stronger gripping force. . Therefore, the configuration in which the tip surfaces of the first side wall 51 and the second side wall 52 are in contact with each other in the state of being tightened by the annular member 61 is not essential.

[Second Embodiment]
Next, the shield structure according to the second embodiment will be described.

  FIG. 13 is a perspective view of a shield shell for explaining the shield structure according to the second embodiment. FIG. 14 is a cross-sectional view of the shield connector for explaining the shield structure according to the second embodiment. FIG. 15 is an enlarged view of part A in FIG. FIG. 16 is a diagram illustrating a braid fixing procedure, and (a) and (b) are side views of the shield connector, respectively.

[Configuration of Each Member of Second Embodiment]
The second embodiment of the present invention differs from that of the first embodiment in the shape of the shield shell. For this reason, in the second embodiment, the shape of the shield shell will be described. In addition, since members other than the shield shell are common to the first embodiment, the description thereof is omitted.

  As shown in FIG. 13, in the second embodiment, a restricting portion 71 is formed on the bottom wall 50, the first side wall 51, and the second side wall 52 that constitute the braid mounting portion 42 of the shield shell 26. The restricting portion 71 restricts the position of the annular member 61 and is composed of two ridges 72. These ridges 72 are formed on the bottom wall 50, the first side wall 51, and the second side wall 52 so as to protrude outward along the circumferential direction, and are formed at positions spaced from each other. Yes. The ridge 72 is formed by striking a surface opposite to the surface on which the ridges 72 of the bottom wall 50, the first side wall 51, and the second side wall 52 are formed. As shown in FIGS. 14 and 15, the braid mounting portion 42 has an annular member 61 tightened in a state where the braid 12 is put on the outer periphery, and the annular member 61 is disposed between the ridges 72. ing.

  In order to attach the braid 12 to the braid attaching part 42 in which such ridges 72 are formed, the end part of the braid 12 is put on the braid attaching part 42 as shown in FIG. Next, as shown in FIG. 16B, the annular member 61 is wound between the ridges 72 on the outer periphery of the braid mounting portion 42 covered with the braid 12 and tightened. At this time, the annular member 61 is positioned by the two ridges 72. Further, the annular member 61 is locked to the ridge 72 and its position is regulated.

[Effects of Second Embodiment]
Thus, according to the shield structure according to the second embodiment, the workability when fixing the braid 12 is improved by positioning the annular member 61 by the restricting portion 71 composed of the two ridges 72. Can be planned.

  Further, it is possible to prevent the annular member 61 from coming off from the braid mounting portion 42. Thereby, it is possible to prevent the braid 12 fixed to the braid mounting portion 42 from coming off from the braid mounting portion 42.

  The restricting portion 71 is not limited to the two ridges 72 but may be a groove portion into which the annular member 61 can be engaged.

  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.

Here, the characteristics of the above-described embodiment of the shield structure according to the present invention are briefly summarized and listed in the following (1) to (9), respectively.
(1) a hollow cylindrical shield member (braid 12);
A shield shell (26) having a housing accommodating portion (41) in which the housing (21) is accommodated, and a shield member attaching portion (braided attaching portion 42) whose outer periphery is covered by the shield member;
An annular member (61) for fixing the shield member to the shield member attaching portion by rotating and tightening the shield member attaching portion whose outer periphery is covered by the shield member;
With
The shield member attaching portion includes a bottom wall (50) extending from the housing accommodating portion, a first side wall (51) extending from one end of the bottom wall, and the other end of the bottom wall. A second side wall (52) provided,
In the shield member mounting portion in which the first side wall and the second side wall are curved so that the front end portions of the first side wall and the second side wall approach each other, an external force acts on the shield member mounting portion. In the state where it is not, the tip of each of the first side wall and the second side wall is separated (gap G),
The annular member tightens the bottom wall, the first side wall and the second side wall;
Shield structure characterized by that.
(2) In the first side wall, a part of the first side wall excluding a curved portion is substantially parallel to the bottom wall,
In the second side wall, a part of the second side wall excluding a curved portion is substantially parallel to the bottom wall.
The shield structure according to (1) above, wherein
(3) A first abutting surface (53) is formed at the tip of the first side wall,
A second abutting surface (54) is formed at the tip of the second side wall,
The annular member tightens the bottom wall, the first side wall, and the second side wall in a state where the first abutting surface and the second abutting surface are in contact with each other.
The shield structure according to (1) or (2) above, wherein
(4) The first side wall includes a part of the first side wall including the tip thereof that is bent with respect to the other part of the first side wall, and is located on the second side wall side in the part. A side surface is formed as the first abutting surface;
The second side wall includes a part of the second side wall including the tip that is bent with respect to the other part of the second side wall, and a side surface located on the first side wall side in the part. , Formed as the second abutment surface,
The shield structure according to (3) above, wherein
(5) In the first side wall, a part of the first side wall including a tip is bent toward the bottom wall with respect to the other part of the first side wall,
A part of the second side wall including the tip is bent toward the bottom wall with respect to the other part of the second side wall.
The shield structure according to (4) above, wherein
(6) On one of the first abutting surface and the second abutting surface, a convex portion (53a) projecting toward the mating abutting surface is formed,
On the other of the first abutting surface and the second abutting surface, a concave portion (54a) that fits into the convex portion formed on the counterpart abutting surface is formed.
The shield structure according to any one of (3) to (5) above, wherein
(7) The annular member is a tie band that can be tightened by a binding tool.
The shield structure according to any one of (1) to (6) above, wherein
(8) On the bottom wall, the first side wall, and the second side wall, a regulation portion (71) that regulates the position of the annular member is formed.
The shield structure according to any one of (1) to (7) above, wherein
(9) Two convex strips (72) are formed along the circumferential direction on the bottom wall, the first side wall, and the second side wall,
The annular member circulates around the shield member attaching portion in a state located between the two ridges,
The shield structure according to any one of (1) to (7) above, wherein

DESCRIPTION OF SYMBOLS 10 Shield connector 12 Braid 21 Housing 26 Shield shell 41 Housing accommodating part 42 Braid attachment part 50 Bottom wall 51 1st side wall 52 2nd side wall 53 1st abutting surface 53a Convex part 54 2nd abutting surface 54a Recessed part 61 annular member 71 regulating portion 72 ridge

Claims (4)

A hollow cylindrical shield member;
A shield shell having a housing accommodating portion in which the housing is accommodated, and a shield member attaching portion whose outer periphery is covered by the shield member;
An annular member for fixing the shield member to the shield member mounting portion by rotating and tightening the shield member mounting portion whose outer periphery is covered by the shield member;
With
The shield member mounting portion includes a bottom wall extending from the housing accommodating portion, a first side wall extending from one end of the bottom wall, and a second wall extending from the other end of the bottom wall. A sidewall,
In the shield member mounting portion in which the first side wall and the second side wall are curved so that the front end portions of the first side wall and the second side wall approach each other, an external force acts on the shield member mounting portion. In the state where it is not, the tip portions of the first side wall and the second side wall are separated from each other,
The first side wall is formed with a first abutting surface at the tip,
A second abutting surface is formed at the tip of the second side wall,
The annular member tightens the bottom wall, the first side wall, and the second side wall in a state where the first abutting surface and the second abutting surface are in contact with each other.
Shield structure characterized by that. The first side wall includes a part of the first side wall including the tip that is bent with respect to the other part of the first side wall, and a side surface of the part located on the second side wall side , Formed as the first abutment surface,
The second side wall includes a part of the second side wall including the tip that is bent with respect to the other part of the second side wall, and a side surface located on the first side wall side in the part. , Formed as the second abutment surface,
The shield structure according to claim 1 , wherein: One of the first abutting surface and the second abutting surface is formed with a convex portion projecting toward the mating abutting surface,
On the other of the first abutting surface and the second abutting surface, a recess that fits into the convex portion formed on the mating abutting surface is formed.
The shield structure according to any one of claims 1 and 2 . The annular member is a tie band that can be tightened by a binding tool.
The shield structure according to any one of claims 1 to 3 , wherein:

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