JP2022181652A - electromagnetic shield connector - Google Patents

Abstract

To provide an electromagnetic shield connector in which a deformation of a core wire is hardly generated between an inner terminal mounted onto an inner housing so as to be connected to the core wire of a cable and a tip end surface of an insulation body derived from the cable.SOLUTION: An electromagnetic shield connector 11 comprises: an inner terminal 39 in which an outer periphery of an insulation body 17 coating a core wire 15 is connected to the core wire 15 of the cable 13 coated with a braiding 19; an inner housing 41 that houses the inner terminal 39 into an inner terminal housing chamber 83; a cylindrical shield sleeve 59 that extends from a shield main body 57 coating the outer periphery of the inner housing 41 and is inserted into between the insulation body 17 and the braiding 19; and a caulking member 61 in which a braiding caulking piece 79 is deformed along an outer shape of the shield sleeve 59 from an upper side of the braiding 19 and is caulked. On an open rear end surface 101 of the inner housing 41 into which the inner terminal 39 is inserted, a tip end surface 103 of the insulation body 17 from which the core wire 15 is derived is contacted.SELECTED DRAWING: Figure 3

Description

The present invention relates to an electromagnetic shield connector.

2. Description of the Related Art A terminal structure of a shielded wire that suppresses deterioration of transmission characteristics is known (see Patent Document 1).
The terminal structure of this shielded wire consists of an inner terminal connected to the conductor (core wire) exposed from the insulator at the end of the insulated wire, a long electromagnetic shield sheet covering the insulated wire, and an insulated wire. The sheath material (coating) wound on the insulating film layer covering the periphery of the insulator is crimped to the folded part of the electromagnetic shield sheet arranged so that the end of the insulator is exposed for a predetermined length. and a tubular outer terminal covering the inner terminal.
When connecting the outer terminal (shield assembly) to the end of the shielded wire (cable), the shield crimping part (braided crimping piece) of the outer terminal is crimped to the folded part of the electromagnetic shield sheet, and the outer terminal is A sheath crimping portion (coating crimping piece) is crimped to the end of the insulated wire.

JP 2017-195034 A

However, in the conventional terminal structure of the shielded wire described above, when connecting the outer terminal to the end of the shielded wire, if there is no means for regulating the relative crimping position of the outer terminal and the shielded wire, conductor crimping in the inner terminal cannot be achieved. There is a risk that the conductor between the rear end of the portion and the tip surface of the insulator of the shielded wire will be crimped in a deformed state. This deformed portion of the conductor becomes a factor of disturbance of impedance. For this reason, in an electromagnetic shield connector having an outer terminal connected to the end of a shield wire as a component, there is concern that the transmission performance may deteriorate due to disturbance of impedance caused by deformation of the conductor (core wire).

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its object is to prevent the core wire between the inner terminal connected to the core wire of the cable and mounted on the inner housing and the tip surface of the insulator led out from the cable. To provide an electromagnetic shield connector which is less likely to be deformed.

The above objects of the present invention are achieved by the following configurations.
(1) An inner terminal connected to the core wire of a cable in which the outer circumference of an insulator covering the core wire is covered with a braid, an inner housing accommodating the inner terminal in an inner terminal accommodating chamber, and an outer circumference of the inner housing being covered. A cylindrical shield sleeve extending from a shield body and inserted between the insulator and the braid, and a braid caulking piece deformed from above the braid so as to conform to the outer shape of the shield sleeve. and a tightened caulking member, wherein the front end face of the insulator from which the core wire is led out is in contact with the rear end face of the opening of the inner housing into which the inner terminal is inserted. shield connector.

According to the electromagnetic shield connector described in (1) above, the shield sleeve extending from the shield body is arranged concentrically between the insulator and the braid, which are coaxially arranged. The inner terminal connected to the end of the cable is inserted into the shield sleeve and accommodated in the inner terminal accommodating chamber of the inner housing. At this time, the core wire between the rear end of the core wire connecting portion of the inner terminal and the front end surface of the insulator of the cable is a portion that is likely to bend and deform due to the peeling of the insulator. Therefore, the dimension of the electromagnetic shield connector of this configuration is set so that the front end face of the insulator of the cable contacts the rear end face of the opening of the inner housing at the same time when the inner terminal is completely attached to the inner terminal receiving chamber. Therefore, even if an external force in the insertion direction is applied from the base end side of the cable after the inner terminal is mounted in the inner terminal accommodating chamber, the external force in the insertion direction is applied from the tip surface of the insulator to the opening of the inner housing. It is applied to the end surface, and does not act on the portion of the core wire between the tip surface of the insulator and the inner terminal, which is susceptible to bending deformation. In the electromagnetic shield connector of this configuration, the braided crimping piece of the crimping member is applied to the shield sleeve from above the braid while the front end surface of the insulator at the end of the cable is in contact with the rear end surface of the opening of the inner housing. be tightened. In this way, the electromagnetic shield connector can be assembled in a state in which the portion of the core wire between the inner terminal connected to the end of the cable and the tip surface of the insulator, which is susceptible to bending deformation, is kept straight. That is, in the electromagnetic shield connector of this configuration, the deformed portion of the core wire, which occurs in the conventional structure, is less likely to occur.
Therefore, since the distance between the core wire and the inner peripheral surface of the shield sleeve is kept constant in the circumferential direction, it is possible to prevent the impedance from being disturbed and the deterioration of the transmission performance.

(2) The above (1), wherein the solder melted and solidified between the shield sleeve, the braid, and the braided crimping piece joins the shield sleeve, the braid, and the braided crimping piece. ), the electromagnetic shield connector described in

According to the electromagnetic shield connector described in (2) above, the braid having the shield sleeve inserted into the inner peripheral side is caulked by the braid caulking piece of the caulking member. At this time, the braid crimping piece is plastically deformed and crimped into a cylindrical shape along the outer shape of the shield sleeve with a crimping force that does not deform the shield sleeve located under the braid. The solder paste applied to the bottom of the braided crimping piece before crimping is melted during the reflow process, and then naturally cooled and solidified. When the solder paste is melted, a portion of the solder paste passes through the braid (mesh) of the braid and reaches the inner peripheral surface of the shield sleeve. The solder paste becomes solder when solidified, and integrally joins the shield sleeve, the braid, and the braid caulking piece with a predetermined strength (liquid phase joining in which the solder, which is the joining substance, is melted to join the base material). In the electromagnetic shield connector of this configuration, the solidified solder integrally joins the shield sleeve, the braid, and the braid crimping piece with a predetermined strength, so that when the braid crimping piece is crimped, the cylindrical shield sleeve is deformed. It is no longer necessary to apply a large crimping force to ensure connection strength and electrical connection reliability.
As a result, according to the electromagnetic shield connector of this configuration, the shield sleeve is not deformed, and the distance between the inner peripheral surface of the shield sleeve and the core wire is kept constant in the circumferential direction. A decrease in transmission performance can be prevented.

According to the electromagnetic shield connector of the present invention, deformation of the core wire is less likely to occur between the inner terminal connected to the core wire of the cable and mounted on the inner housing and the tip surface of the insulator led out from the cable.

The foregoing clearly discloses the present invention. Furthermore, the present invention can be read more clearly and fully from the description of the following modes for carrying out the invention (hereinafter referred to as "embodiments").

1 is a perspective view of an electromagnetic shield connector according to one embodiment of the present invention; FIG. FIG. 2 is an exploded perspective view of the electromagnetic shield connector shown in FIG. 1; FIG. 2 is a longitudinal sectional view of the electromagnetic shield connector shown in FIG. 1; FIG. 3 is an exploded perspective view of the shield assembly shown in FIG. 2; FIG. 4 is a vertical cross-sectional view of the inner terminal connected to the end of the cable before being inserted into the inner terminal accommodating chamber of the inner housing; FIG. 4 is a vertical cross-sectional view showing the inner housing and the end of the cable after the inner terminal is inserted into the inner terminal accommodating chamber, along with an enlarged view of the essential parts thereof; FIG. 4 is a vertical cross-sectional view of the shield assembly before the crimping member is crimped; FIG. 5 is a vertical cross-sectional view of the shield assembly after the crimping member is crimped; FIG. 9 is an enlarged view of part A in FIG. 8 ;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of an electromagnetic shield connector 11 according to one embodiment of the invention.
The electromagnetic shield connector 11 according to the present embodiment constitutes a cable with an electromagnetic shield connector by being attached to the end of the cable 13, as shown in FIG. A coaxial cable, for example, is used as the cable 13 .

The cable 13 is composed of a core wire 15, an insulator 17, a braid 19, and a coating 21 from the center side (see FIG. 3). The conductive core wire 15 may be either a single wire or a twisted wire obtained by twisting a plurality of strands. The insulator 17 has electrical insulation and covers the core wire 15 . The braid 19 is conductive and covers the outer circumference of the insulator 17 . The coating 21 has electrical insulation and covers the outer circumference of the braid 19 .

Although the cable 13 is a coaxial cable having the braid 19 in this embodiment, other configurations are not limited as long as the cable 13 has the braid 19 .

The electromagnetic shield connector 11 connected to the cable 13 is divided into a male electromagnetic shield connector and a female electromagnetic shield connector according to the gender of the terminals to be accommodated. The electromagnetic shield connector 11 according to this embodiment can be used as both a male electromagnetic shield connector and a female electromagnetic shield connector. The main parts of the configuration according to the present invention are substantially the same for the male electromagnetic shield connector and the female electromagnetic shield connector. In the following description, the main part of the configuration according to the present invention will be described using a female electromagnetic shield connector as a representative example. Hereinafter, the female electromagnetic shield connector will simply be referred to as the electromagnetic shield connector 11 .

FIG. 2 is an exploded perspective view of the electromagnetic shield connector 11 shown in FIG.
The electromagnetic shield connector 11 is composed of an outer housing 23, a side spacer 25, and a shield assembly 27, as shown in FIG. The outer housing 23 is molded from an electrically insulating synthetic resin. The side spacers 25 are molded from an electrically insulating synthetic resin. The outer housing 23 has an elastically deformable locking arm 31 provided with a locking projection 29 .

FIG. 3 is a longitudinal sectional view along the core wire 15 of the electromagnetic shield connector 11 shown in FIG.
A terminal receiving chamber 33 is formed in the outer housing 23 so as to penetrate therethrough in the front-rear direction. An elastic locking piece 35 (flexible lance) is formed in the outer housing 23 so as to protrude into the terminal accommodating chamber 33 . A spacer insertion hole 37 is formed in the outer housing 23 so as to traverse a part of the terminal accommodating chamber 33 in the direction crossing the terminal insertion direction.

The shield assembly 27 is composed of an inner terminal 39, an inner housing 41, and a shield outer terminal 43 composed of three parts, a shield main body 57, a shield sleeve 59 and a crimping member 61, as will be described later. The inner terminal 39 is a female inner terminal made of a conductive metal and formed in a cylindrical shape. The inner housing 41 is molded from an electrically insulating synthetic resin. The shield outer terminal 43 is formed in a cylindrical shape or a pair of clamping pieces from a conductive metal. A shield assembly 27 is connected to the end of the cable 13 .

A shield assembly 27 connected to the end of the cable 13 is inserted into the terminal accommodating chamber 33 of the outer housing 23 . The shield assembly 27 inserted into the terminal accommodating chamber 33 of the outer housing 23 is secured to the outer housing 23 by engaging the locking projections 45 provided on the shield assembly 27 with the elastic locking pieces 35 of the terminal accommodating chamber 33 . is held in the terminal accommodating chamber 33 of the .

The side spacers 25 are assembled in the spacer insertion holes 37 of the outer housing 23 so as to be inserted in the direction across the terminal accommodating chambers 33 . In the outer housing 23 to which the shield assembly 27 is attached, when a pulling force is applied to the cable 13 in the left direction in FIG. , the elastic locking piece 35 tries to elastically deform. At this time, the side spacer 25 restricts the elastic deformation of the elastic locking piece 35 to ensure the locked state between the locking projection 45 of the shield assembly 27 and the elastic locking piece 35 .

The outer housing 23 includes a fitting detection member 47 (CPA: Connector Position Assurance) that detects and assures proper fitting with a mating outer housing (not shown). The fitting detection member 47 is attached to the side surface of the outer housing 23 so as to be movable between a temporary locking position and a full locking position in the connector fitting direction. The fitting detecting member 47 detects when the outer housing 23 and the mating outer housing are completely fitted, that is, when the electromagnetic shield connector (female electromagnetic shield connector) 11 and the male electromagnetic shield connector are completely fitted. It is possible to move from the temporary locking position to the final locking position (fitting assurance position).

When the electromagnetic shield connector 11 is inserted and fitted into the hood portion (not shown) of the male electromagnetic shield connector, the lock protrusion 29 of the lock arm 31 engages with the locked portion (not shown). As a result, the mated state between the electromagnetic shield connector 11 and the male electromagnetic shield connector is maintained.

In the fitted state, the fitting detection member 47 provided on the outer housing 23 is moved from the temporary locking position to the final locking position which is slid leftward in FIG. 3 from the temporary locking position. . The fitting detecting member 47 is connected to the electromagnetic shield connector 11 by engaging the detecting portion 51 provided at the tip of the detecting arm 49 with the locking projection 29 engaged with the locked portion (not shown). Detects proper mating with an electromagnetic shield connector. Further, when the fitting detecting member 47 is moved to the final locking position, the lock arm restricting portion 53 is inserted into the unlocking space of the unlocking piece 55 of the lock arm 31, thereby disabling unlocking of the lock arm 31. do. In other words, the fitting detection member 47 detects proper fitting and operates to assure proper fitting.

In the fitted state, the electromagnetic shield connector 11 connected to the terminal of one cable 13 and the male electromagnetic shield connector connected to the terminal of the other cable 13 (not shown) are electrically connected. That is, the inner terminal 39 and the male inner terminal (not shown) are electrically connected, and the core wires of the cable 13 are electrically connected to form a communication circuit. At the same time, the shield outer terminal 43 and the mating shield outer terminal (not shown) are electrically connected, and the braids of the cable 13 are electrically connected to form a shield circuit.

FIG. 4 is an exploded perspective view of shield assembly 27 shown in FIG.
The shield assembly 27 comprises an inner terminal 39, an inner housing 41 and a shield outer terminal 43, as shown in FIG. The shield outer terminal 43 is composed of three parts, a shield main body 57 , a shield sleeve 59 and a crimping member 61 .

The inner terminal 39 is electrically connected to the core wire 15 of the cable 13 by crimping. That is, the inner terminal 39 is connected to the core wire 15 of the cable 13 in which the outer periphery of the insulator 17 covering the core wire 15 is covered with the braid 19 .

The shield body 57 is substantially cylindrical. The shield body 57 is made of conductive metal, and is formed to have a front cylindrical connection portion 63 and an enlarged diameter portion 65 extending from the front to the rear. An inner housing chamber 67 is formed in the shield body 57 so as to penetrate therethrough in the front-rear direction. In this specification, "forward" refers to the direction in which the connector advances in the mating direction, and "backward" refers to the opposite direction.

An elastically deformable contact piece 69 is cut and raised on the front cylindrical connecting portion 63 . The contact piece 69 constitutes a mechanism for elastically contacting and electrically connecting with a mating shield outer terminal (not shown) in a state where a male electromagnetic shield connector (not shown) is fitted. The shield main body 57 has a pair of parallel standing pieces 71 cut and raised at the rear portion of the enlarged diameter portion 65 . The upright piece 71 is inserted into a guide groove 72 (see FIG. 3) formed in the outer housing 23 to constitute a stabilizer that determines the insertion posture of the shield assembly 27 .

The shield sleeve 59 is formed in a substantially cylindrical shape. The shield sleeve 59 is made of a conductive metal, and is formed in a cylindrical shape in which an insertion portion 73 and a braid covered portion 75 are continuous from the front to the rear. The fitting portion 73 has a cylindrical shape with a diameter larger than that of the braid covered portion 75 and is coaxial with the braid covered portion 75 . The shield sleeve 59 is formed with an insertion space penetrating therethrough in the front-rear direction.

The crimping member 61 is made of conductive metal and formed in a U shape. In the caulking member 61 , a braided caulking piece 79 and a covered caulking piece 81 are connected in the front-rear direction and integrally formed through a connecting portion 77 .

The inner terminal 39 of the shield assembly 27 connected to the end of the cable 13 is accommodated in the inner terminal accommodating chamber 83 of the inner housing 41 . The inner housing 41 accommodating the inner terminal 39 is accommodated in the inner housing accommodating chamber 67 of the shield body 57 . The inner housing 41 has a large-diameter portion 85 at the central portion in the insertion direction, and a front cylindrical portion 87 and a rear cylindrical portion 89 having smaller diameters than the large-diameter portion 85 at the front and rear sides of the large-diameter portion 85 .

Also, the fitting portion 73 of the shield sleeve 59 is fitted into the enlarged diameter portion 65 of the shield body 57 . The shield main body 57 and the shield sleeve 59 are integrated, and the enlarged diameter portion 65 and the insertion portion 73 are press-fitted and then electrically joined and held by solder 91 (see FIG. 9). Note that the enlarged diameter portion 65 and the fitting portion 73 may be held only by press-fitting, only by soldering, or by a locking mechanism or the like.

Also, the braid 19 of the cable 13 is arranged on the braid covered portion 75 of the shield sleeve 59 so as to cover the outer circumference of the braid covered portion 75 . The shield sleeve 59 extends from the shield body 57 that covers the outer circumference of the inner housing 41, and the braid covered portion 75 is inserted between the insulator 17 and the braid 19 (see FIG. 3). The crimping member 61 is crimped so that the braid crimping piece 79 covers the outer circumference of the braid 19 . At this time, a solder paste 95 is applied to the U-shaped bottom portion 93 (see FIG. 4) of the braid crimping piece 79 .

A solder paste 95 is applied to the bottom portion 93 of the braid crimping piece 79 . The braided crimping piece 79 of the crimping member 61 has three grooves 97 perpendicular to the longitudinal direction of the cable 13 on its inner peripheral surface 99 . The groove 97 is formed so as to be recessed from the inner peripheral surface 99 of the braid crimping piece 79 . The crimping member 61 having the groove 97 on the inner peripheral surface 99 of the braided crimping piece 79 is crimped by deforming the braided crimping piece 79 from above the braid 19 so as to follow the outer shape of the shield sleeve 59 .

The braid crimping piece 79 deformed from above the braid 19 so as to follow the outer shape of the braid covered portion 75 of the shield sleeve 59 and the shield sleeve 59 are integrally joined (brazed) with solder 91 . That is, the braided crimping piece 79, which is the base material, and the shield sleeve 59 are joined (liquid phase joining) by the solder 91, which is the joining substance.

The covering crimping piece 81 of the crimping member 61 is crimped onto the covering 21 of the cable 13 from the outer circumference. That is, the shield assembly 27 has the crimping member 61 fixed to both the braid 19 and the coating 21 .

Next, a method of manufacturing the shield assembly 27 to be connected to the end of the cable 13 described above will be described.

5 is a longitudinal sectional view of the inner terminal 39 connected to the end of the cable 13 before being inserted into the inner terminal accommodating chamber 83 of the inner housing 41. FIG.
After cutting the cable 13 to a predetermined length, the insulator 17 and the coating 21 are partly cut off at the end to expose the core wire 15 and the braid 19 .
The inner terminal 39 is electrically connected to the core wire 15 of the cable 13 by crimping, as shown in FIG.
The braid 19 is loosened and the diameter of the braid 19 is expanded so as to create a gap between the braid 19 and the insulator 17 .

FIG. 6 is a longitudinal sectional view showing the inner housing 41 and the end of the cable 13 after the inner terminal 39 has been inserted into the inner terminal accommodating chamber 83, together with an enlarged view of the essential parts thereof.
At the same time as inserting the inner terminal 39 into the inner terminal accommodating chamber 83 of the inner housing 41 , the braid covered portion 75 of the shield sleeve 59 is inserted between the braid 19 and the insulator 17 .
At this time, the front end surface 103 of the insulator 17 abuts the open rear end surface 101 of the inner housing 41 into which the inner terminal 39 is inserted.
In order to cover the outer circumference of the braid-covered portion 75 of the shield sleeve 59 with the braid 19, the diameter of the braid 19 that has been expanded is reduced.

FIG. 7 is a longitudinal sectional view of the shield assembly 27 before the crimping member 61 is crimped.
A predetermined amount of solder paste 95 is applied to the bottom portion 93 of the braided crimping piece 79 before crimping, as shown in FIG. In this embodiment, the predetermined amount is an amount that the solder paste 95 melted by the reflow process passes through the braid 19 and spreads sufficiently between at least the braid crimping piece 79 and the shield sleeve 59 .

By applying the solder paste 95 to the U-shaped bottom portions 93 of the pair of braid crimping pieces 79 , it is possible to apply the solder paste more easily than, for example, applying the solder paste to the outer peripheral surface of the braid 19 . Further, the applied solder paste 95 can be fixed and stored on the U-shaped bottom portion 93 by gravity. This is effective in facilitating the caulking operation of the braided caulking piece 79 in the post-process.

FIG. 8 is a longitudinal sectional view of the shield assembly 27 after the crimping member 61 is crimped.
The braided crimping piece 79 of the crimping member 61 is crimped so as to cover the outer circumference of the braid 19 . Also, the covering crimping piece 81 of the crimping member 61 is crimped onto the covering 21 of the cable 13 from the outer periphery. That is, the shield assembly 27 has the crimping member 61 fixed to both the braid 19 and the coating 21 . At this time, the inner peripheral surface 99 of the braid crimping piece 79 is crimped to the extent that it is in contact with the braid 19 covering the shield sleeve 59 . That is, the braided crimping piece 79 is not in a crimping state that compressively deforms the braid 19 and the shield sleeve 59 . As a result, the braid-covered portion 75 of the shield sleeve 59 maintains its cylindrical shape.

Also, the cable 13 is maintained in a state in which the front end surface 103 of the insulator 17 is in contact with the opening rear end surface 101 of the inner housing 41 . In other words, the core wire 15 between the tip surface 103 of the insulator 17 and the inner terminal 39 is configured so that an axial compressive force due to the caulking work does not act.

The braid crimping piece 79 that covers the outer circumference of the braid 19 and is crimped is heated by reflow treatment, for example. This heating melts the solder paste 95 . The solder paste 95 may be melted by irradiating the braid crimping piece 79 with laser light spotwise using a laser irradiation device.

Here, a gap exists between the inner surface of the braid crimping piece 79 in which the groove 97 is formed and the outer circumference of the braid 19 . The solder paste 95 melted by the reflow process flows into this gap. The melted solder paste 95 spreads upward through the gap between the inner surface of the groove 97 and the outer circumference of the braid 19 due to capillary action.

9 is an enlarged view of part A in FIG. 8. FIG.
At the same time as spreading upward on the inner surface of the braid crimping piece 79 , the melted solder paste 95 also spreads in the axial direction (back and forth) so that the outer peripheral surface of the shield sleeve 59 and the braid 19 are in contact with the braid 19 . eye, and extends between the inner peripheral surface 99 of the braid crimping piece 79 and the braid 19 . Finally, it spreads over at least the entire inner peripheral surface 99 of the braided crimping piece 79 . Then, the melted solder paste 95 becomes solder 91 by solidifying. The solder 91 integrally joins (liquid phase joining) the braid crimping piece 79 deformed along the outer shape of the shield sleeve 59 from above the braid 19 and the shield sleeve 59 .

That is, the braided crimping piece 79, which is the base material, and the shield sleeve 59 are joined (liquid phase joining) by solder 91, which is a joining substance. Thus, in the electromagnetic shield connector 11 , the shield sleeve 59 , the braid 19 , and the braid caulking piece 79 are electrically joined by the solder 91 . The braid covered portion 75 , the braid 19 , the braid caulking piece 79 , and the solder 91 joining them constitute the braid caulking portion 105 .

Solidifying the molten solder paste 95 into solder 91 completes the manufacture of the shield assembly 27 that is connected to the end of the cable 13 .

Next, the operation of the electromagnetic shield connector 11 according to the embodiment described above will be described.
In the electromagnetic shield connector 11 according to this embodiment, the braid covered portion 75 of the shield sleeve 59 extending from the shield body 57 is arranged concentrically between the insulator 17 and the braid 19 coaxially arranged. . A shield assembly 27 is connected to the terminal of the cable 13 . At this time, an inner terminal 39 is fixed to the tip of the core wire 15 from which the insulator 17 has been removed at the end of the cable 13 . The inner terminal 39 is inserted into the braid covered portion 75 of the shield sleeve 59 . The shield sleeve 59 is formed with a fitting portion 73 on the tip side of the braid covered portion 75 . The fitting portion 73 of the shield sleeve 59 is inserted inside the shield body 57 (the enlarged diameter portion 65) and fixed integrally. An inner housing 41 having an inner terminal accommodating chamber 83 is fitted to the inner periphery of the fitting portion 73 .

Therefore, the inner terminal 39 is finally mounted in the inner terminal accommodating chamber 83 of the inner housing 41 fitted inside the fitting portion 73 .

As shown in FIG. 9, in the cable 13, the core wire 15 between the rear end 109 of the core wire connecting portion 107 of the inner terminal 39 and the tip surface 103 of the insulator 17 of the cable 13 is stripped. As a result, it is a portion that is likely to bend and deform. For example, after the inner terminal 39 is mounted in the inner terminal accommodating chamber 83 of the inner housing 41, the portion of the core wire 15 that is prone to bending deformation is peeled off when an external force is applied from the proximal end side of the cable 13 in the insertion direction. The insulator 17 having a large outer diameter, which is not wrapped, applies compressive force in the axial direction and may be deformed (buckled).

Therefore, in the electromagnetic shield connector 11 of the present embodiment, the front end surface 103 of the insulator 17 of the cable 13 is brought into contact with the opening rear end surface 101 of the inner housing 41 at the same time that the inner terminal 39 is completely attached to the inner terminal receiving chamber 83. sized to touch. Therefore, even if an external force in the insertion direction is applied from the base end side of the cable 13 after the inner terminal 39 is mounted in the inner terminal accommodating chamber 83 , the external force in the insertion direction is applied from the distal end surface 103 of the insulator 17 . It is applied to the opening rear end surface 101 of the inner housing 41 and does not act on the portion of the core wire 15 between the front end surface 103 of the insulator 17 and the inner terminal 39 that is susceptible to bending deformation.

In the electromagnetic shield connector 11 of this embodiment, the braided crimping piece 79 of the crimping member 61 is held in a state in which the front end surface 103 of the insulator 17 at the end of the cable 13 is in contact with the opening rear end surface 101 of the inner housing 41 . is crimped over the braid 19 to the braid covered portion 75 of the shield sleeve 59 .

The shield assembly 27 maintains the portion of the core wire 15 between the inner terminal 39 connected to the end of the cable 13 and the front end surface 103 of the insulator 17 that is susceptible to bending deformation in a straight line, thereby preventing electromagnetic shielding. Connector 11 can be assembled. That is, the electromagnetic shield connector 11 of the present embodiment is less likely to have a deformed portion of the core wire unlike the conventional structure.

Therefore, since the distance between the core wire 15 and the inner peripheral surface of the shield sleeve 59 is kept constant in the circumferential direction, it is possible to prevent the impedance from being disturbed and to prevent (suppress) the deterioration of the transmission performance.

In addition, in the electromagnetic shield connector 11 of the present embodiment, the braid 19 having the shield sleeve 59 inserted on the inner peripheral side thereof is crimped by the braid crimping piece 79 of the crimping member 61 . At this time, the braid crimping piece 79 is plastically deformed and crimped into a cylindrical shape along the outer shape of the shield sleeve 59 with a crimping force that does not deform the shield sleeve 59 positioned below the braid 19 .

That is, the shield sleeve 59, the braid 19 and the braid crimping piece 79 are arranged concentrically and assembled. The solder paste 95 applied to the bottom portion 93 of the braided crimping piece 79 before crimping is melted during the reflow process and then naturally cooled and solidified. When the solder paste 95 is melted, part of it passes through the braid (mesh) of the braid 19 and reaches the inner peripheral surface of the shield sleeve 59 . The solder paste 95 solidifies into solder 91, and integrally joins the shield sleeve 59, the braid 19, and the braid caulking piece 79 with a predetermined strength (a liquid that melts the solder, which is the joining substance, to join the base material). phase bonding).

Thus, in the electromagnetic shield connector 11 of this embodiment, the solidified solder 91 integrally joins the braid covered portion 75 of the shield sleeve 59, the braid 19 and the braid caulking piece 79 with a predetermined strength. Therefore, in the electromagnetic shield connector 11, when crimping the braid crimping piece 79, there is no need to apply a crimping force large enough to deform the cylindrical shield sleeve 59 to ensure connection strength and electrical connection reliability. .

As a result, in the electromagnetic shield connector 11 of the present embodiment, the shield sleeve 59 is not deformed, the braided covered portion 75 becomes cylindrical, and the braided crimping portion 105 tightens the inner peripheral surface of the shielded sleeve 59 (braided covered portion). 75) and the core wire 15 is kept constant in the circumferential direction, it is possible to prevent the impedance from being disturbed and to prevent the deterioration of the transmission performance.

Therefore, according to the electromagnetic shield connector 11 according to this embodiment, the inner terminal 39 connected to the core wire 15 of the cable 13 and attached to the inner housing 41, and the tip surface 103 of the insulator 17 led out from the cable 13 are connected to each other. The deformation of the core wire 15 between is less likely to occur.

It should be noted that the present invention is not limited to the above-described embodiments, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, number, location, etc. of each component in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved.

Here, the features of the embodiments of the electromagnetic shield connector according to the present invention described above are summarized and listed briefly in [1] to [2] below.
[1] an inner terminal (39) connected to the core wire (15) of a cable (13) in which the outer periphery of an insulator (17) covering the core wire (15) is covered with a braid (19);
an inner housing (41) accommodating the inner terminal (39) in the inner terminal accommodating chamber (83);
a cylindrical shield sleeve (59) extending from a shield body (57) covering the outer periphery of the inner housing (41) and inserted between the insulator (17) and the braid (19);
a crimping member (61) in which a braided crimping piece (79) is crimped by being deformed from above the braid (19) so as to conform to the outer shape of the shield sleeve (59),
The front end surface (103) of the insulator (17) from which the core wire (15) is led out is in contact with the opening rear end surface (101) of the inner housing (41) into which the inner terminal (39) is inserted. An electromagnetic shield connector (11), characterized in that:
[2] The solder (91) melted and solidified between the shield sleeve (59), the braid (19), and the braid crimping piece (79) spreads between the shield sleeve (59) and the braid (19). and the braided crimping piece (79).

11... Electromagnetic shield connector 13... Cable 15... Core wire 17... Insulator 19... Braid 39... Inner terminal 41... Inner housing 57... Shield body 59... Shield sleeve 61... Crimp member 79... Braid crimp piece 83... Inner terminal accommodation Chamber 91 Solder 101 Opening rear end surface 103 Front end surface

Claims (2)

an inner terminal connected to the core wire of a cable in which the outer circumference of the insulator covering the core wire is covered with a braid;
an inner housing accommodating the inner terminal in an inner terminal accommodating chamber;
a cylindrical shield sleeve extending from a shield body covering the outer periphery of the inner housing and inserted between the insulator and the braid;
a crimping member in which a braid crimping piece is crimped by being deformed from above the braid so as to conform to the outer shape of the shield sleeve;
An electromagnetic shield connector, wherein a front end face of said insulator from which said core wire is led out is in contact with a rear end face of an opening of said inner housing into which said inner terminal is inserted. 2. The method according to claim 1, wherein the solder melted and solidified between the shield sleeve, the braid, and the braid crimping piece joins the shield sleeve, the braid, and the braid crimping piece. Electromagnetic shield connector.

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