JP6404867B2 - Shield connector - Google Patents

Description

  The present invention relates to a shield connector provided with an outer terminal having a shield crimping portion that is crimped to a shield layer of a shielded electric wire.

Conventionally, high-frequency shielded electric wires have been used to transmit high-frequency electrical signals to control units of various electrical components such as car navigation mounted on automobiles and the like.
The shielded wire has a structure in which the outer periphery of the insulation coating covering the outer periphery of the conductor portion made of a conductive material is covered with a shield layer, and the shield layer arranged on the outer surface blocks the electrical influence from the outside. This enables high-frequency propagation.

  A shield connector is used for electrical connection of the shielded electric wire. A shielded connector is a shielded wire in which the outer periphery of an insulation coating covering the outer periphery of the conductor portion is covered with a shield layer, an inner terminal connected to the conductor portion, and the inner terminal is disposed inside, and is crimped to the shield portion. And an outer terminal provided with a shield crimping portion.

  For example, in Patent Document 1, a terminal for a shielded wire that is crimped to a shield layer and an outer layer sheath that are folded back to the outer layer side at the end of the outer sheath in which the barrel of the outer terminal (outer terminal) forms the exterior of the shielded wire The mounting structure of the bracket is described.

JP 2006-244816 A

  However, the attachment structure of the terminal fitting to the shielded wire described in Patent Document 1 is crimped to the outer periphery of the shield layer so that the end of the barrel of the outer terminal (outer terminal) overlaps, so that the inner side of the crimped portion There is a problem that the cross-sectional shape of the wire tends to be a deformed circle, the distance between the core wire (conductor portion) and the shield layer in the radial direction becomes non-uniform, and as a result, the impedance is disturbed.

  The present invention has been made in view of the above, and an object of the present invention is to provide a shield connector capable of preventing the impedance from being disturbed due to the non-uniform distance between the conductor portion and the shield layer in the radial direction. And

In order to solve the above-described problems and achieve the object, the shield connector according to claim 1 of the present invention is such that the outer periphery of the insulating coating covering the outer periphery of the conductor portion is covered with the shield layer, and the shield layer An outer wire provided with a shielded electric wire whose outer periphery is covered with an outermost insulating coating, an inner terminal connected to the conductor, and a shield crimping portion in which the inner terminal is disposed and crimped to the shield layer A shield connector having a terminal, wherein the shielded electric wire is a coaxial cable, and the shield crimping portion is substantially circular on the outer periphery of the shield layer in a state where the outermost insulating coating is peeled off and exposed. have a pair of barrel pieces projecting engaging portion for engaging the ends of each other and the concave engaging portions are respectively formed so as to be crimped, the shielding layer is made of braided, before The outer terminals, the disposed in the extending direction front side of the shielded wire with respect to the shield crimping portion, and having a braided loose preventing zone portion of the strip covering the shield layer along the circumference of said shield layer It is characterized by.

  The shield connector according to claim 2 of the present invention is the shield connector according to the above invention, wherein the outer terminal is located at a position separated from the shield crimping portion to be crimped to the outer periphery of the exposed shield layer. It has the insulation coating crimping | compression-bonding part crimped | bonded to an insulation coating.

  In the shield connector according to claim 3 of the present invention, in the above invention, the convex engagement portion has a shape in which a width is increased from the proximal end side in the protruding direction toward the distal end side, and the concave engagement member is provided. The joining portion has a concave shape corresponding to the convex engaging portion so that the convex engaging portion is fitted.

  In the shield connector according to claim 4 of the present invention, in the above invention, the state before the shield crimping portion is crimped to the conductor portion is substantially U-shaped, and the convex engagement. Each end of the pair of barrel pieces in which the concave portion and the concave engaging portion are formed is bent inward.

  Further, in the shield connector according to claim 5 of the present invention, in the above invention, the shield crimping portion has inner end faces on both sides of the base end position of the convex engagement portion, and the thickness of the barrel piece is at the end. An engagement guide inclined surface that guides the engagement between the convex engagement portion and the concave engagement portion is formed by being inclined so as to become thinner.

The shield connector according to claim 1 of the present invention, in the above invention, the shielding layer is made of a braided, the outer terminal, the extending direction front side of the shielded wire to the shield crimping portion It is arranged and has a belt-like braided anti-strip band portion covering the shield layer along the outer periphery of the shield layer.

In the shield connector according to claim 6 of the present invention, in the above invention, the outer terminal includes an outer terminal body in which the inner terminal is accommodated and disposed, and the outer terminal body and the shield crimping portion. The braided anti-belt portion before being bent along the outer periphery of the shield layer, in a state before being crimped to the outer periphery of the shield layer. It is characterized by projecting from the connecting portion in the direction substantially perpendicular to the extending direction of the shielded electric wire, which is equal to the projecting direction of the pair of barrel pieces.

In the shielded connector according to claims 1 and 7 of the present invention, the shielded electric wire is a coaxial cable, and the shield crimping portion is formed on the outer periphery of the shield layer in a state where the outermost insulating coating is peeled off and exposed. By connecting the end portions of the barrel pieces to each other by engaging the convex engaging portion and the concave engaging portion, and crimping the barrel pieces along the circular outer periphery of the insulating coating without being affected by bending or the like. The shield layer can be pressure-bonded so as to maintain a perfect circle shape by engagement with the convex engagement portion and the concave engagement portion, so the radial direction between the conductor portion and the shield layer As a result, it is possible to prevent the impedance from being disturbed by the non-uniform distance in the radial direction between the conductor portion and the shield layer.

  The shield connector according to claim 2 of the present invention is capable of crimping the shield crimping portion and the insulating coating crimping portion in a state of being separated from each other. The influence of deformation is eliminated, and the shield crimping portion can be crimped to the shield layer closer to a perfect circle.

In the shielded connector according to claims 3 and 7 of the present invention, the convex engaging portion changes the width in a simple shape, and the concave engaging portion is formed corresponding to the convex engaging portion. Therefore, the convex engagement part and the concave engagement part are easily engaged with each other and can be firmly engaged.

In the shield connector according to claims 4 and 7 of the present invention, the state before the shield crimping part is crimped to the conductor part is substantially U-shaped, and the convex engagement part and the concave engagement part Since the end portions of the pair of barrel pieces formed with the portions are bent inward, the end portions of the pair of barrel pieces can be brought close to each other in the initial stage of the crimping, and the shield crimping portion As a result, the shield crimping portion can be easily crimped into a perfect circle.

In the shield connector according to claims 5 and 7 of the present invention, since the shield crimping portion is formed with an engagement guide inclined surface, the concave engagement in the process in which the shield crimping portion is crimped to the shield layer. The end surface of the barrel piece formed with the portion is bent so that the concave engaging portion overlaps with the lower side of the convex engaging portion by being guided in sliding contact with the inclined surface of the engaging guide. Therefore, the shield crimping portion is easily bent in a circular shape, and as a result, the shield crimping portion can be easily crimped in a perfect circle.

Shielded connector according to claim 1 of the present invention, the engagement portion prior Symbol braided loose preventing zone portion, including said convex engagement portion and the concave engaging portion of the pair of barrel pieces of the shield crimping portion By preventing the shield layer from breaking in between, the shield layer that breaks in between the engagement portions of the pair of barrel pieces weakens the engagement strength of the pair of barrel pieces, The pair of barrel pieces can be prevented from being disengaged due to an external load applied to the shield crimping portion such as the shield electric wire being pulled, and consequently opening.

The shield connector according to claim 6 of the present invention is in a state before the braided detachment prevention band portion is bent along the outer periphery of the shield layer and before being crimped to the outer periphery of the shield layer. The pair of barrel pieces are crimped to the shield layer, because the pair of barrel pieces are protruded from the connecting portion in a direction substantially perpendicular to the extending direction of the shielded electric wire, which is equal to the protruding direction of the pair of barrel pieces. Similarly, since the braided anti-shoulder band can be bent along the outer periphery of the shield layer, the shape of a mold or the like is not complicated to bend the braided anti-shoulder band, In addition, the braided anti-strip belt portion can be bent along the outer periphery of the shield layer by effectively using the connecting portion.

FIG. 1 is an exploded perspective view of a shield connector according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the terminal-attached electric wire shown in FIG. FIG. 3 is a cross-sectional view taken along line AA of the electric wire with terminal shown in FIG. FIG. 4 is a top view of the outer terminal showing the periphery of the shield crimping portion. FIG. 5 is a diagram showing only the shield crimping part before the outer terminal is crimped. FIG. 6 is a view of the shield crimping portion and the insulation coating crimping portion before crimping the outer terminal as viewed from the extending direction side of the shielded electric wire. FIG. 7 is a development view of the outer terminal. FIG. 8 is a view showing a state in which the shield crimping portion is crimped to the shield layer using the upper and lower molds. FIGS. 9A and 9B are views of the shield crimping portion before the start of crimping as viewed from the extending direction of the shielded electric wire, FIG. 9A is a perspective view of (A1), and FIG. It is the figure which started the crimping | compression-bonding, and the state which the edge part of a pair of barrel piece approached mutually was seen from the extending direction of a shield electric wire, (B2) is a perspective view of (B1). FIG. 10 is a view of (C1) viewed from the extending direction of the shielded electric wire in a state where the deformation for crimping to the shield layer has progressed and the shield crimping portion is bent in a circular shape, (C2 ) Is a perspective view of (C1), (D1) is a view of a state where the shield crimping portion has been crimped to the shield layer, as viewed from the extending direction of the shielded electric wire, and (D2) is a perspective view of (D1). It is. 11A is an exploded perspective view of a shield connector according to Embodiment 2 of the present invention, and FIG. 11B is a perspective view of the outer terminal shown in FIG. It is. FIG. 12 is a perspective view of the shielded electric wire with the outer terminal attached. FIG. 13 is a cross-sectional view of the shielded electric wire with the outer terminal attached. FIG. 14 is a development view of the outer terminal.

  Hereinafter, preferred embodiments of a shield connector according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an exploded perspective view of a shield connector 1 according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the terminal-attached electric wire 20 shown in FIG. FIG. 3 is a cross-sectional view of the terminal-attached electric wire 20 shown in FIG. FIG. 4 is a top view of the outer terminal 40 showing the periphery of the shield crimping portion 50. FIG. 5 is a view showing only the shield crimping portion 50 before the outer terminal 40 is crimped. FIG. 6 is a view of the shield crimping part 50 and the insulation coating crimping part 42 before crimping the outer terminal 40 as viewed from the extending direction side of the shielded electric wire 30. FIG. 7 is a development view of the outer terminal 40. FIG. 8 is a diagram illustrating a state in which the shield crimping portion 50 is crimped to the shield layer 33 using the upper and lower molds T1 and T2.

  The shield connector 1 according to the first embodiment of the present invention is for transmitting a high-frequency electric signal by being electrically connected to a control unit of various electrical components mounted on an automobile or the like via a shielded electric wire. .

  The shield connector 1 includes a connector housing 10 and a terminal-attached electric wire 20 in which an outer terminal 40 is accommodated in the connector housing 10.

First, the connector housing 10 will be described.
The connector housing 10 is made of an insulating material such as a synthetic resin material, and the outer terminal 40 is accommodated in a space 11 formed so as to penetrate in the front-rear direction.

  The inner terminal 60 is disposed inside the outer terminal 40 accommodated in the connector housing 10, and a partner connection terminal (not shown) inserted into the space 11 from the front end opening 10 a of the connector housing 10 and the inner terminal 60 are provided. It is designed to be electrically connected.

Next, the electric wire 20 with a terminal is demonstrated.
The terminal-attached electric wire 20 includes a shielded electric wire 30, an outer terminal 40, an inner terminal 60, and a dielectric 70.

The shielded electric wire 30 is a coaxial cable in which the outer periphery of the insulating coating 32 covering the outer periphery of the conductor portion 31 is covered with the shield layer 33 and the outer periphery of the shield layer 33 is covered with the outermost insulating coating 34.
More specifically, in the shielded electric wire 30, the outer periphery of the conductor portion 31 made of a single core wire is covered with an insulating coating 32, and the outer periphery of the insulating coating 32 is covered with a shield layer 33 made of a braided wire. The outer periphery is covered with the outermost insulating coating 34.

In the shielded electric wire 30, the inner terminal 60 is pressure-bonded to the outer periphery of the conductor portion 31 that is exposed when the outermost insulating coating 34 and the insulating coating 32 whose end portions are on the front end side are peeled off for a predetermined interval.
The shielded wire 30 has the outer terminal 40 on the outer periphery of the shield layer 33 exposed by peeling the outermost insulating coating 34 around the exposed conductor portion 31 by a predetermined interval because the inner terminal 60 is attached. Crimped.
That is, in the shielded electric wire 30, the conductor 31 part and the shield layer 33 are exposed in predetermined order in the order from the distal end side, the inner terminal 60 is crimped to the exposed conductor part 31, and the outer terminal 40 is applied to the exposed shield layer 33. Is crimped.

  In addition, in this Example 1, although the conductor part 31 illustrated what is a single core wire, not only this but the other conductor part 31 may be used if the shielded electric wire 30 is a coaxial cable. For example, a conductor portion 31 in which a plurality of strands are twisted may be used.

The outer terminal 40 is a terminal connected to the shield layer 33, and is formed into a predetermined shape by pressing a plate-like metal member or the like.
More specifically, the plate-like metal member M is formed into a predetermined shape by being die-cut as shown in the development view shown in FIG. 7 and then subjected to a process such as bending.

  The outer terminal 40 includes an outer terminal main body 41 in which the inner terminal 60 is accommodated and disposed therein, a shield crimping portion 50 that is crimped to the shield layer 33, and an insulating coating crimping portion 42 that is crimped to the outermost insulating coating 34. Have.

The outer terminal main body 41 has a substantially cylindrical shape, and the inner terminal 60 is locked at a predetermined position in the cylinder by a locking structure (not shown).
The outer terminal body 41 is inserted into the connector housing 10 and is locked at a predetermined position by a locking structure (not shown).

  The shield crimping portion 50 is connected to the outer terminal main body 41 and the bottom wall 51 via a connecting portion 40 a continuous with the bottom wall of the outer terminal main body 41, and a pair of barrel pieces 52 </ b> A and 52 </ b> B stands from both sides of the bottom wall 51. It is provided as follows.

  The pair of barrel pieces 52A and 52B are convex engagements that engage with each other so that the outermost insulating coating 34 is peeled off and exposed to the outer periphery of the shield layer 33 in a substantially circular shape. A joining portion 52a and a concave engaging portion 52b are formed.

  The convex engagement portion 52a has a shape whose width is increased from the proximal end side in the protruding direction toward the distal end side, and the concave engagement portion 52b is convex engagement so that the convex engagement portion 52a is fitted. It has a shape corresponding to the portion 52a.

  Such a pair of barrel pieces 52A and 52B has the outer circumference of the shield layer 33 as a whole of the shield crimping portion 50 in a state where the lengthwise dimension is engaged with the convex engagement portion 52a and the concave engagement portion 52b. It is adjusted so that it can be enclosed in a perfect circle.

In addition, as shown in FIGS. 5 and 6, the shield crimping portion 50 is substantially U-shaped before being crimped to the shield layer 33, and has a convex engagement portion 52a and a concave engagement portion 52b. Each end portion of the pair of barrel pieces 52A and 52B formed with the bent is bent inward.
The end portions of the pair of barrel pieces 52A and 52B in which the convex engagement portion 52a and the concave engagement portion 52b are formed in this way are bent inwardly, so that a pair of barrels are formed at the initial stage of pressure bonding. The ends of the pieces 52A and 52B can be brought close to each other, and the shield crimping portion 50 is easily deformed into a circle.
Note that the bending angles of the end portions of the pair of barrel pieces 52A and 52B are the convex engagement portions 52a and the concave shapes when bent while sliding on the arch-shaped curved surface (see FIG. 8) of the upper mold T1. The mutual end portions where the engaging portions 52b are formed are adjusted so as to be arranged at positions where they can easily engage the convex engaging portions 52a and the concave engaging portions 52b.

  In addition, the shield crimping portion 50 is formed so that the inner end surfaces on both sides of the base end position of the convex engagement portion 52a are inclined so that the thickness of the barrel piece 52A becomes thinner toward the distal end. An engagement guide inclined surface 53 is formed to guide the engagement between 52a and the concave engagement portion 52b.

The engagement guide inclined surface 53 is bent while sliding in contact with the end surface of the barrel piece 52B on which the engagement portion 52b is formed, so that the concave engagement portion 52b is below the convex engagement portion 52a. It has a function to guide it so that it is arranged at the overlapping position on the side.
That is, the engagement guide inclined surface 53 guides the convex engagement portion 52a and the concave engagement portion 52b to be easily engaged, and guides the shield crimping portion 50 to be bent in a perfect circle. It has a function to do.

Furthermore, as shown in FIG. 7, the shield crimping portion 50 has a concavo-convex portion 54 formed on the inner surface serving as a pressure-bonding surface to the shield layer 33.
When the shield crimping part 50 is crimped to the outer periphery of the shield layer 33, the concavo-convex part 54 bites into the shield layer 33 so as to be firmly attached to the shield layer 33.

As shown in FIG. 8, the shield crimping portion 50 is crimped to the outer periphery of the shield layer 33 in a perfect circle by clamping the upper mold T1 and the lower mold T2.
For this reason, as shown in FIG. 3, the distance D of the conductor part 31 of the shielded electric wire 30 which is a coaxial cable, and the shield layer 33 can be made uniform.

Further, the shield crimping portion 50 is not crimped to the shield layer 33 that is folded back on the outer periphery of the end portion of the outermost insulating coating 34, but is crimped to the outer periphery of the shield layer 33 that is exposed by peeling off the outermost insulating coating 34. It is like that.
For this reason, the shield crimping part 50 can eliminate one of the factors that make the distance between the conductor part 31 and the shield layer 33 uneven, such as wrinkles of the shield layer 33 caused by the folding of the shield layer 33.

The insulation coating crimping part 42 is connected to the shield crimping part 50 and the bottom wall 43 via a connecting part 40b continuous to the bottom wall 51 of the shield crimping part 50, and as shown in FIG. Are provided so as to stand up from both sides of the bottom wall 43.
Such an insulating coating crimping portion 42 is crimped to the outermost insulating coating 34 at a position spaced from the shield crimping portion 50 by connecting to the shield crimping portion 50 with the connecting portion 40b interposed therebetween. .
That is, the shield crimping portion 50 is crimped to the shield layer 33 independently of the insulating coating crimping portion 42. Thereby, the shield crimping portion 50 is not easily affected by deformation that occurs when the insulating coating crimping portion 42 is crimped to the outermost insulating coating 34.

  The inner terminal 60 includes a substantially cylindrical mating terminal connection portion 61 to which a connection mating terminal (not shown) is connected, and a crimping portion 62 that is crimped to the exposed conductor portion 31.

The dielectric 70 is disposed so as to be interposed between the outer terminal 40 and the inner terminal 60 and has a predetermined dielectric constant.
The dielectric 70 is made of an insulating material having a substantially cylindrical shape, and is disposed in the outer terminal main body 41 in a state where the inner terminal 60 is press-fitted into the cylinder, so that the inner terminal 60 is moved inside the outer terminal main body 41. The outer terminal 40 can be supported in an insulated state.

  Such a shield connector 1 exposes each of the conductor portion 31 and the shield layer 33 in order from the distal end side of the shielded electric wire 30 for a predetermined section, and crimps the crimp portion 62 of the inner terminal 60 to the exposed conductor portion 31. The inner terminal 60 is disposed in the outer terminal body 41 while being pressed into the dielectric 70, the shield crimping portion 50 of the outer terminal 40 is crimped to the outer periphery of the shield layer 33, and the insulation coating crimping portion 42 is further coated on the outermost insulation coating. The electric wire 20 with a terminal is completed by crimping to 34, and the outer terminal 40 of the electric wire 20 with a terminal is accommodated in the connector housing 10.

Next, the manner in which the shield crimping portion is crimped to the outer periphery of the shield layer will be described in detail with reference to FIGS. 9 and 10.
FIGS. 9A and 9B are views of the shield crimping portion 50 before the start of crimping as viewed from the extending direction of the shielded electric wire 30, (A2) is a perspective view of (A1), and (B1) is a shield layer. 33 is a view of the state in which crimping to 33 is started and the ends of the pair of barrel pieces 52A and 52B are close to each other, as viewed from the extending direction of the shielded electric wire 30, and (B2) is a perspective view of (B1). . FIG. 10 is a view of the state where (C1) is deformed for crimping to the shield layer 33 and the shield crimping portion 50 is bent in a circular shape as viewed from the extending direction of the shielded electric wire 30. (C2) is a perspective view of (C1), (D1) is a view of the state where crimping of the shield crimping part 50 to the shield layer 33 is completed, as viewed from the extending direction of the shielded electric wire 30, (D2) It is a perspective view of (D1).
9 and 10 show only the shield crimping part extracted.

  As shown in FIGS. 9A1 and 9A2, the shield crimping portion 50 is substantially U-shaped before the start of crimping to the shield layer 33, and has a convex engagement portion 52a and a concave engagement portion. Each end portion of the pair of barrel pieces 52A and 52B formed with 52b is bent inward.

When pressure bonding to the shield layer 33 is started using the upper and lower molds T1 and T2 (see FIG. 8) from the state before the pressure bonding to the shield layer 33, as shown in FIGS. 9 (B1) and (B2), The pair of barrel pieces 52A and 52B are bent so that the ends thereof are close to each other.
As described above, the end portions of the pair of barrel pieces 52A and 52B can approach each other at the initial stage of the start of crimping because the convex engaging portion 52a and the concave engaging portion 52b are in a state before the crimping is started. This is because the end portions of the formed pair of barrel pieces 52A and 52B are bent inward.

  When the crimping to the shield layer 33 further progresses, the shield crimping portion 50 has an engagement guide inclined surface as shown in FIGS. 10C1 and 10C2 where the end face of the barrel piece 52B in which the concave engagement portion 52b is formed. By being guided in sliding contact with the surface 53, the concave engaging portion 52b is bent so as to overlap with the lower side of the convex engaging portion 52a. In this way, the shield crimping portion 50 is bent in a substantially circular shape.

When the shield crimping portion 50 is completely crimped to the shield layer 33, as shown in FIGS. 10D1 and 10D2, the convex engagement portion 52a and the concave engagement portion 52b are completely engaged, The pair of barrel pieces 52A and 52B are formed in a perfect circle shape with the ends thereof being completely connected.
Here, the shield crimping part 50 is finished in a perfect circle shape by completing the mold clamping of the upper and lower molds T1, T2.

  In the shielded connector 1 according to the first embodiment of the present invention, the shielded electric wire 30 is a coaxial cable, and the shield crimping portion 50 is exposed on the outer periphery of the shield layer 33 with the outermost insulating coating 34 peeled off. By connecting and crimping the convex engaging portions 52a and the concave engaging portions 52b at the ends of the pieces 52A and 52B to each other, the circular outer periphery of the insulating coating 32 is not affected by bending or the like. The shield layer 33 can be crimped so as to maintain a perfect circle shape by engagement with the convex engagement portion 52a and the concave engagement portion 52b, so that the diameter of the conductor portion 31 and the shield layer 33 can be reduced. The distance in the direction becomes uniform, and as a result, it is possible to prevent the impedance from being disturbed by the non-uniform distance in the radial direction between the conductor portion 31 and the shield layer 33.

  In addition, since the shield connector 1 according to the first embodiment of the present invention can be crimped with the shield crimping portion 50 and the insulation coating crimping portion 42 separated from each other, the insulation coating crimping portion 42 with respect to the shield crimping portion 50 is provided. Therefore, the shield crimping part 50 can be crimped to the shield layer 33 closer to a perfect circle.

  Further, in the shielded connector 1 according to the first embodiment of the present invention, the convex engaging portion 52a changes the width in a simple shape, and the concave engaging portion 52b is formed corresponding to the convex engaging portion 52a. Therefore, the convex engaging portion 52a and the concave engaging portion 52b can be easily engaged with each other and can be firmly engaged.

  In the shield connector 1 according to the first embodiment of the present invention, the state before the shield crimping portion 50 is crimped to the conductor portion 31 is substantially U-shaped, and the convex engagement portion 52a and the concave engagement are provided. Since the ends of the pair of barrel pieces 52A and 52B formed with the portion 52b are bent inward, the ends of the pair of barrel pieces 52A and 52B can be brought close to each other in the initial stage of the crimping. Since the shield crimping portion 50 can be easily deformed into a circle, the shield crimping portion 50 can be easily crimped into a perfect circle as a result.

  Further, in the shield connector 1 according to the first embodiment of the present invention, since the shield crimping portion 50 is formed with the engagement guide inclined surface 53, in the process in which the shield crimping portion 50 is crimped to the shield layer 33, the concave connector The end face of the barrel piece 52B in which the joint portion 52b is formed is guided by sliding in contact with the engagement guide inclined surface 53, so that the concave engagement portion 52b overlaps with the lower side of the convex engagement portion 52a. Therefore, the shield crimping portion 50 is easily bent in a circular shape, and as a result, the shield crimping portion 50 can be easily crimped in a perfect circle.

Next, the shield connector 2 according to the second embodiment of the present invention will be described with reference to FIGS.
11A is an exploded perspective view of the shield connector 2 according to the second embodiment of the present invention, and FIG. 11B is a view of the outer terminal 80 shown in FIG. FIG. FIG. 12 is a perspective view of the shielded electric wire 30 in a state where the outer terminal 80 is completely attached. FIG. 13 is a cross-sectional view of the shielded electric wire 30 in a state where the outer terminal 80 is completely attached. FIG. 14 is a development view of the outer terminal 80.
The shield connector 2 according to the second embodiment is different from the shield connector 1 according to the first embodiment in that the outer terminal 80 further includes a braided detachment prevention band portion 81 that covers the shield layer 33 made of a braid.
Other configurations are the same as those of the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

The outer terminal 80 is a terminal connected to the shield layer 33, and is formed into a predetermined shape by pressing a plate-like metal member or the like.
More specifically, the plate-like metal member is formed into a predetermined shape by being die-cut as shown in the development view shown in FIG. 14 and then subjected to a treatment such as bending.

  The outer terminal 80 includes an outer terminal main body 41 in which the inner terminal 60 is accommodated and disposed therein, a shield crimping portion 50 that is crimped to the shield layer 33, and an insulating coating crimping portion 42 that is crimped to the outermost insulating coating 34. And a braided anti-strip strip 81.

The braided detachment prevention band portion 81 is disposed on the front side in the extending direction of the shielded electric wire 30 with respect to the shield crimping portion 50 and covers the shield layer 33 along the outer periphery of the shield layer 33.
The braided anti-shoulder band 81 is provided in a connecting portion 40a that connects the outer terminal body 41 and the shield crimping portion 50 so as to be continuous on the bottom wall.
More specifically, the braided detachment prevention band portion 81 is provided so as to extend in a band shape from a position inside the tip end of the shield layer 33 on the end face of the connecting portion 40a.
As shown in the developed view of FIG. 14, the braided anti-belt portion 81 is a barrel piece before being crimped to the outer periphery of the shield layer 33 before being bent along the outer periphery of the shield layer 33. The connecting portion 40a protrudes in the direction substantially perpendicular to the extending direction of the shielded electric wire 30 in the same direction as the protruding direction of 52A and 52B.

Such a braided detachment prevention band portion 81 is moved from the unfolded state as shown in FIG. 14 to the shield layer 33 along the outer periphery of the shield layer 33 as shown in FIG. Bent to cover.
For this reason, the braided detachment prevention band portion 81 covers the peripheral portion of the tip of the shield layer 33 exposed on the front side in the extending direction of the shielded electric wire 30 with respect to the shield crimping portion 50 along the outer periphery of the shield layer 33. It has become.
Further, the braided anti-shoulder band 81 includes the shield layer 33 at the engagement portion in a state where the convex engagement portions 52a and the concave engagement portions 52b of the pair of barrel pieces 52A and 52B of the shield crimping portion 50 are engaged. The shield layer 33 is covered at a position corresponding to the position in the circumferential direction.
It should be noted that the braided detachment prevention band portion 81 may cover substantially the entire circumference of the shield layer 33.
As a result, even when the shield crimping portion 50 is crimped to the shield layer 33 that is a braid, even if the shield layer 33 is in a loose state, the loose shield layer 33 is shielded by the braided loose prevention band portion 81. Deformation or movement is prevented, and it is possible to prevent the pair of barrel pieces 52A and 52B of the shield crimping portion 50 from entering between the engagement portions including the convex engagement portions 52a and the concave engagement portions 52b. .

  The shield connector 2 according to the second embodiment of the present invention has the same effect as the shield connector 1 according to the first embodiment, and the braided anti-shoulder band 81 has a convex relationship between the pair of barrel pieces of the shield crimping portion 50. The separated shield layer 33A and 52B are separated from each other by preventing the broken shield layer 33 from entering between the engaging portions including the joining portion 52a and the concave engaging portion 52b. The layer 33 weakens the engagement strength of the pair of barrel pieces 52A and 52B, and the pair of barrel pieces 52A and 52B is disengaged by an external load applied to the shield crimping portion 50 such as the shield wire 30 being pulled. Can be prevented.

  Further, in the shield connector 2 according to the second embodiment of the present invention, the braided anti-belt portion 81 is in a state before being bent along the outer periphery of the shield layer 33, before being crimped to the outer periphery of the shield layer 33. The pair of barrel pieces 52A, 52B are shielded from the pair of barrel pieces 52A, 52B because they project from the connecting portion 40a in the direction substantially perpendicular to the extending direction of the shielded electric wire 30 in the same direction as the protruding direction of the pair of barrel pieces 52A, 52B. Since the braided anti-strip band 81 can be bent along the outer periphery of the shield layer 33 in the same manner as the pressure bonding to the layer 33, the shape of a mold or the like is used to bend the braided anti-strip band 81. In addition, the braided anti-belt portion 81 can be bent along the outer periphery of the shield layer 33 by effectively using the connecting portion 40a.

  In the shield connector 1 according to the first and second embodiments of the present invention, the convex engagement portion 52a has a shape in which the width is increased from the proximal direction in the protruding direction toward the distal end, and the concave engagement portion 52b is provided. The shape corresponding to the convex engagement portion 52a is illustrated, but not limited to this, the convex engagement portion 52a and the concave engagement portion 52b can hold the shield crimping portion 50 in a perfect circle shape. As long as the end portions of the pair of barrel pieces 52A and 52B are engaged with each other, the shapes of the convex engagement portions 52a and the concave engagement portions 52b may be other shapes.

  The invention made by the present inventor has been specifically described based on the above-described embodiments of the invention. However, the present invention is not limited to the above-described embodiments of the invention and does not depart from the gist thereof. Various changes can be made.

DESCRIPTION OF SYMBOLS 1, 2 Shield connector 10 Connector housing 10a Front end opening 11 Space 20 Electric wire with terminal 30 Shielded wire 31 Conductor part 32 Insulation coating 33 Shield layer 34 Outermost insulation coating 40, 80 Outer terminal 40a, 40b Connecting part 41 Outer terminal body 41a Elasticity Locking piece 42 Insulation coating crimping part 43 Bottom wall 44 Barrel piece 50 Shield crimping part 51 Bottom wall 52A, 52B Barrel piece 52a Convex engagement part 52b Concave engagement part 53 Engagement guide inclined surface 54 Concavity and convexity part 60 Inner terminal 61 Mating terminal connecting part 62 Crimping part 70 Dielectric 81 Braided anti-shoulder band T1 Upper mold T2 Lower mold

Claims (7)

The outer periphery of the insulating coating covering the outer periphery of the conductor portion is covered with a shield layer, and the shielded electric wire whose outer periphery of the shield layer is covered with the outermost insulating coating; the inner terminal connected to the conductor portion; and In a shield connector having an inner terminal disposed inside and an outer terminal having a shield crimping part that is crimped to the shield layer,
The shielded wire is
A coaxial cable,
The shield crimping part is
A convex engagement portion and a concave engagement portion that engage the ends of the shield layer so that the outermost insulating coating is peeled off and exposed on the outer periphery of the shield layer in a substantially circular shape, respectively. have a pair of barrel pieces formed,
The shield layer is
Consisting of a braid,
The outer terminal is
It has a belt-like braided anti-shoulder band disposed on the front side in the extending direction of the shielded electric wire with respect to the shield crimping section and covering the shield layer along the outer periphery of the shield layer. Shield connector. The outer terminal is
2. The shield according to claim 1, further comprising: an insulation coating crimping portion that is crimped to the outermost insulation coating at a position spaced from the shield crimping portion that is crimped to the outer periphery of the shield layer in the exposed state. connector. The convex engagement portion is
In the protruding direction, the shape is expanded from the proximal side to the distal side,
The concave engaging portion is
The shield connector according to claim 1 or 2, wherein the shield connector has a concave shape corresponding to the convex engagement portion so that the convex engagement portion is fitted. The shield crimping part is
The state before being crimped to the conductor portion is substantially U-shaped, and each end portion of the pair of barrel pieces formed with the convex engagement portion and the concave engagement portion faces inward. The shield connector according to claim 1, 2 or 3, wherein the shield connector is bent. The shield crimping part is
The inner end surfaces on both sides of the base end position of the convex engaging portion are inclined so that the thickness of the barrel piece becomes thinner toward the distal end, thereby the convex engaging portion and the concave engaging portion. The shield connector according to claim 4, wherein an engagement guide inclined surface that guides the engagement of the shield connector is formed. The outer terminal is
An outer terminal body in which the inner terminal is accommodated and disposed;
A connecting portion for connecting the outer terminal body and the shield crimping portion;
Having
The braided anti-shoulder band is
In a state before being bent along the outer periphery of the shield layer, the projection direction of the pair of barrel pieces in a state before being crimped to the outer periphery of the shield layer is substantially equal to the extending direction of the shield wire. The shield connector according to claim 1, wherein the shield connector protrudes from the connecting portion in a direction . The outer periphery of the insulating coating covering the outer periphery of the conductor portion is covered with a shield layer, and the shielded electric wire whose outer periphery of the shield layer is covered with the outermost insulating coating; the inner terminal connected to the conductor portion; and In a shield connector having an inner terminal disposed inside and an outer terminal having a shield crimping part that is crimped to the shield layer,
The shielded wire is
A coaxial cable,
The shield crimping part is
A convex engaging portion and a concave engaging portion that engage with each other without overlapping each other so that the outermost insulating coating is peeled off and exposed on the outer periphery of the shield layer in a substantially circular shape. A pair of barrel pieces each formed with a joint
Have
The convex engagement portion is
In the protruding direction, the shape is expanded from the proximal side to the distal side,
The concave engaging portion is
A concave shape corresponding to the convex engagement portion is formed so that the convex engagement portion is fitted,
The shield crimping part is
The state before being crimped to the conductor portion is substantially U-shaped, and each end portion of the pair of barrel pieces formed with the convex engagement portion and the concave engagement portion faces inward. Is bent,
The shield crimping part is
The inner end surfaces on both sides of the base end position of the convex engaging portion are inclined so that the thickness of the barrel piece becomes thinner toward the distal end, thereby the convex engaging portion and the concave engaging portion. An engagement guide inclined surface is formed to guide the engagement of the
Shield connector characterized by that.

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