JP5019469B2 - Connector terminal with shielded wire - Google Patents

Description

  The present invention relates to a connector terminal with a shielded wire used for connection of a counterpart terminal, and in particular, when the connector terminal is attached to the connector housing, the state of engagement of the connector terminal by the elastic locking piece of the connector housing is inadvertent. The present invention relates to a connector terminal with a shielded wire that can be prevented from being released.

7 to 10 show a connector terminal (terminal body) 3 connected to one end of the coaxial cable 1 in order to connect the coaxial cable 1 which is a kind of shielded wire to a counterpart terminal (not shown), The prior art example which has the terminal locking structure by the connector housing 5 for accommodating and holding the connector terminal 3 is shown.
Note that the connector terminal 3 and the connector housing 5 shown here have the configuration disclosed in Patent Document 1, and the connector terminal 3 is a so-called plug-type terminal connected to the end of the coaxial cable 1.

  As shown in FIG. 7, the coaxial cable 1 includes a central conductor (core wire) 11 that is an internal conductor and an insulator (inner covering) that extends in the longitudinal direction of the central conductor 11 while surrounding the outer peripheral surface of the central conductor 11. ) 13, an outer conductor 15 extending in the longitudinal direction while surrounding the outer peripheral surface of the insulator 13 as a shield member, and an insulating sheath (external) extending in the longitudinal direction while surrounding the outer peripheral surface of the outer conductor 15 Coating) 17. Then, at one end portion (tip portion) in the longitudinal direction, one end portions of the center conductor 11, the insulator 13, the outer conductor 15, and the insulating outer shell 17 are exposed.

  That is, one end portion of the coaxial cable 1 attached to the connector terminal 3 is partially arranged so that the outer conductor 15 is exposed by a predetermined length L1 from the front end of the insulating sheath 17 before being attached to the connector terminal 3. The insulating conductor 13 is partially cut away from the tip of the outer conductor 15 so as to be exposed by a predetermined length L2, and the center conductor 11 is exposed from the tip of the insulator 13 by a predetermined length L3. As a result, the central conductor 11, the insulator 13, and the outer conductor 15 are exposed at one end in the longitudinal direction of the coaxial cable 1.

  Further, in this conventional terminal locking structure, as shown in FIGS. 9 and 10, when the connector terminal 3 is mounted on the connector housing 5, an elastic locking piece (lance) provided on the connector housing 5. The retainer 33 is detachably prevented from being engaged with the connector housing 5 by the engagement with the housing 31a, and the double lock for restricting the movement of the elastic lock piece 31a in the disengagement direction is realized by the retainer 33 movably assembled to the housing body 31. Has been.

As shown in FIG. 7, the connector terminal 3 is electrically connected to the central conductor 11 at one end portion of the coaxial cable 1 by crimping connection, and electrically connects the central conductor 11 to the counterpart terminal. A center conductor conducting terminal (core wire conducting terminal: generally called “center contact”) 21 made of conductive metal and the center conductor 11 in a state where the center conductor conducting terminal 21 is electrically connected to the center conductor 11. Between the outer conductor 15 and the insulator 13 at one end of the coaxial cable 1 and an insulating member (for example, a foamed dielectric material made of polyethylene or the like) 25 formed with a through-hole 25a penetrating and locked therewith. A first cylindrical portion 23 a is disposed at one end, and the center conductor conductive terminal 21 is fitted to the insulating member 25 and surrounds the center conductor conductive terminal 21 through the insulating member 25. Branch A conductive metal shield terminal 23 that is electrically connected to the outer conductor 15 and a conductor crimping piece 27a. A crimping member 27 for crimping and connecting the outer conductor 15 to the first cylindrical portion 23a by crimping the outer conductor 15 at a portion where the first cylindrical portion 23a is interposed at one end portion of the coaxial cable 1 with 27a. I have. In addition, an open portion 23c for attaching the crimp member 27 is provided between the first cylindrical portion 23a and the second cylindrical portion 23b of the shield terminal 23, and the above-described elastic locking is provided. An engaging recess 23d for engaging with the piece 31a is provided in the lower part of the shield terminal 23 (see FIG. 9).
It should be noted that the insulation 13 is prevented from being deformed when the conductor caulking piece 27a of the crimping member 27 is caulked due to the interposition of the first cylindrical portion 23a described above, and the insulating member 25 prevents the shield terminal from being deformed. A predetermined dielectric constant is ensured between the central conductor conduction terminal 21 and the shield terminal 23 inserted into the inside of the terminal 23.

  In the crimping member 27, a sheath crimping piece 27b for crimping the insulating sheath 17 of the coaxial cable 1 is connected to the rear (right side in the figure) of the conductor crimping piece 27a, and in front of the conductor crimping piece 27a (see FIG. In the middle left), there is provided a shielding portion 27 c that covers the open portion 23 c of the shield terminal 23 and enhances the shielding performance of the shield terminal 23.

  In the conventional connector terminal 3 having the above-described configuration, the central conductor conducting terminal 21 is crimped (conducted) to the central conductor 11 at one end of the coaxial cable 1 subjected to the end treatment, and then connected to one end of the coaxial cable 1. The connected central conductor conducting terminal 21 is inserted into the shield terminal 23, and the central conductor conducting terminal 21 is passed through the inside of the insulating member 25 positioned in the second cylindrical portion 23b of the shield terminal 23 in advance. At the same time, the first cylindrical portion 23a of the shield terminal 23 is placed inside the outer conductor 15 exposed at one end of the coaxial cable 1 so as to be disposed between the outer conductor 15 and the insulator 13. To do.

  In this state, the conductor conductor crimping piece 27a of the crimping member 27 is applied to the outer conductor 15 exposed at one end portion of the coaxial cable 1, and the outer sheath of the crimping portion 27 is applied to the insulating sheath 17 exposed at this one end portion. By crimping the crimping pieces 27b, the connector terminal 3 is fixed to the tip of the coaxial cable 1 as shown in FIG. Then, as shown in FIG. 8, the connector terminal 3 fixed to the tip of the coaxial cable 1 is attached to the connector housing 5.

  Here, when the connector terminal 3 is attached to the connector housing 5, the connector housing 5 previously brings the retainer 33 movably assembled to the housing main body 31 into the unlocked state in which the retainer 33 is pushed downward as shown in FIG. Keep it. In this unlocked state, the lance restraining portion 33a provided in the retainer 33 is spaced apart from the outer surface of the elastic locking piece 31a with a predetermined distance. Elastic displacement behavior of the elastic locking piece 31a when receiving insertion is possible.

  After the connector terminal 3 to which the coaxial cable 1 is connected is attached to the terminal accommodating chamber 35 of the housing main body 31 in which the retainer 33 is unlocked, the elastic locking piece 31a is engaged with the engaging recess 23d. As shown in FIG. 10, the retainer 33 is pushed inward of the housing main body 31 to be in a locked state.

In this locked state, as shown in FIG. 10, the lance restraining portion 33a of the retainer 33 approaches or contacts the outer surface of the elastic locking piece 31a, and the engaging recess 23d and the elastic locking piece 31a are engaged. For example, by restricting the elastic displacement of the elastic locking piece 31a to the outside due to, for example, tension acting on the coaxial cable 1, the engagement state of the elastic locking piece 31a with the connector terminal 3 is inadvertently released. It is preventing. That is, the double locking state is realized by the elastic locking piece 31a and the lance restraining portion 33a. In addition, the structure which implement | achieves this double latching state is also hereafter called "double latching structure" for convenience of explanation.
That is, by adopting such a double locking structure, for example, even when a certain level of stress acts on the elastic locking piece 31a from the connector terminal 3, an elastic displacement for releasing the engagement at the elastic locking piece 31a is achieved. Occurrence can be prevented, and inadvertent dropping of the connector terminal 3 can be prevented.

JP 2003-297493 A

  However, in the case of the conventional connector terminal 3 described above, in order to realize a double locking structure for preventing the connector housing 5 from coming off, a retainer 33 as a dedicated component for realizing this is incorporated in the connector housing 5. However, there is a problem that the number of components on the connector housing 5 side increases and the structure of the connector housing 5 is complicated, and there is room for improvement.

  Further, the crimping member 27 used in the conventional connector terminal 3 is vertically attached to the outer conductor 15 exposed on one end side of the coaxial cable 1, that is, temporarily supported, and then a conductor crimping piece 27a. Since the outer crimping piece 27b is crimped, if the support is removed (disintegrated) before the crimping of the conductor crimping piece 27a or the outer crimping claw 27b is completed, the outer crimping piece 27b will fall off, causing a delay in the work. There was a risk, leading to inefficient work.

  Further, in order to make the conventional connector terminal 3 attached to the connector housing 5 as shown in FIG. 10, the connector terminal 3 is completed in a state where the connector terminal 3 is assembled to the coaxial cable 1 as shown in FIG. After that, as shown in FIGS. 9 and 10, assembly work to the connector housing 5 must be performed, and a number of assembly steps are required to obtain the final form shown in FIG. There was a problem that it was difficult to improve.

  The present invention has been made in view of the above-described problems, and an object thereof is an engagement state between the elastic locking piece of the connector housing and the connector terminal when the connector terminal (terminal body) is attached to the connector housing. It is an object of the present invention to provide a connector terminal with a shielded electric wire that can prevent unintentional release of the cable with a simple structure.

The above-described object of the present invention is achieved by the following configuration.
(1) A core wire that is an internal conductor, an inner coating that extends in the longitudinal direction of the core wire while surrounding the outer peripheral surface of the core wire, and a shield member that extends in the longitudinal direction while surrounding the outer peripheral surface of the inner coating An outer coating extending in the longitudinal direction while surrounding the outer peripheral surface of the shield member, and one end of each of the core wire, the inner coating, and the shield member is exposed at one end in the longitudinal direction. Shielded wire,
A terminal body that is coupled to the one end of the shielded wire and attached to the connector housing having an elastic locking piece, and is prevented from being detached from the connector housing by engagement with the elastic locking piece;
A connector terminal with a shielded wire comprising
The terminal body is
A conductive metal core conducting terminal for electrically connecting the core wire to a counterpart terminal, electrically connected to the core wire at the one end of the shielded wire;
An insulating member formed with a through-hole penetrating and locked with the core wire in a state where the core wire conduction terminal is electrically connected to the core wire;
The one end portion of the shielded electric wire has a first cylindrical portion disposed between the shield member and the inner sheath at one end portion, and is fitted on the insulating member and surrounds the core wire conduction terminal. While having the second cylindrical portion that supports the core wire conduction terminal via the insulating member at the other end, and a shield terminal made of conductive metal that is electrically connected to the shield member,
A crimping member;
And the crimp member is crimped and connected to the first cylindrical portion by crimping the shield member at a portion where the first cylindrical portion is interposed at the one end of the shielded electric wire. A crimping part to be
A locking piece holding part that is integrally formed so as to extend from the edge of the crimping part, and is positioned so as to be close to or in contact with the elastic locking piece when the terminal body is attached to the connector housing;
Have
The connector terminal with a shielded wire, wherein the operation of the elastic locking piece in the disengagement direction is restricted by the locking piece holding part.
(2) The crimping portion surrounds the outer sheath of the shielded electric wire in a circumferential direction in a state before the shield member is caulked at a portion where the first cylindrical portion is interposed in the one end portion of the shielded electric wire. The connector terminal with a shielded wire according to (1), wherein the connector terminal is formed in a substantially hollow cylindrical shape.
(3) The connector terminal with a shielded wire according to (2), wherein the locking piece holding portion is formed in a substantially hollow cylindrical shape and is arranged so as to be substantially concentric with the crimping portion. .
(4) a core wire which is an inner conductor, an inner coating extending in the longitudinal direction of the core wire while surrounding the outer peripheral surface of the core wire, and a shield member extending in the longitudinal direction while surrounding the outer peripheral surface of the inner coating An outer coating extending in the longitudinal direction while surrounding the outer peripheral surface of the shield member, and one end of each of the core wire, the inner coating, and the shield member is exposed at one end in the longitudinal direction. A shielded wire preparation process for preparing the shielded wire,
A conductive metal core conducting terminal for electrically connecting the core wire to a counterpart terminal, electrically connected to the core wire at the one end of the shielded wire;
An insulating member formed with a through-hole penetrating and locked with the core wire in a state where the core wire conduction terminal is electrically connected to the core wire;
The one end portion of the shielded electric wire has a first cylindrical portion disposed between the shield member and the inner sheath at one end portion, and is fitted on the insulating member and surrounds the core wire conduction terminal. While having the second cylindrical part supporting the core wire conduction terminal via the insulating member at the other end, and a shield terminal made of conductive metal for being electrically connected to the shield member, ,
A crimping part that crimps and connects the shield member to the first cylindrical part by crimping the shield member at a portion where the first cylindrical part is interposed at the one end of the shielded wire; and an edge of the crimping part And a locking piece holding portion that is integrally formed so as to extend from the portion and is positioned so as to be close to or in contact with the elastic locking piece when the terminal body is attached to the connector housing. When,
A terminal body preparation step of preparing a terminal body having
A core wire conduction terminal connecting step of conducting the core wire conduction terminal to the core wire exposed at the one end of the shielded wire;
A connector housing assembly step of incorporating the shield terminal into the connector housing such that the shield terminal with the insulating member attached is engaged and held by the elastic locking piece of the connector housing;
With the crimping member attached to the shielded electric wire, the shielded electric wire is retracted to a position away from the exposed portion located at the one end of the shield member, and the shielded electric wire is connected by the core wire conduction terminal connecting step. The core wire conduction terminal insertion step of inserting the core wire conduction terminal connected to the one end portion into the shield terminal incorporated in the connector housing by the connector housing assembly step,
After the core wire conducting terminal insertion step, the locking piece restraining portion is brought close to or in contact with the elastic locking piece by moving the crimping portion of the crimping member to a predetermined position for crimping connection of one end of the shielded electric wire. The connector terminal with an electric wire is in an assembled state in which the shield terminal and the shield member are crimped and connected to one end of the shielded electric wire by crimping the crimped portion to the shielded electric wire. Assembly process;
A method of assembling a connector terminal with a shielded electric wire, comprising:

According to the configuration of the above (1), it is formed so as to be integrally extended from the edge of the crimping portion of the crimping member and positioned so as to approach or come into contact with the elastic locking piece when the terminal body is attached to the connector housing. The locking piece holding part to be controlled restricts the operation of the elastic locking piece in the disengagement direction. That is, it is possible to regulate the operation of the elastic locking piece in the disengagement direction with a simple structure by simply forming the locking piece holding part integrally with the crimping member which is a component of the terminal body, For example, it is not necessary to separately provide a part for performing this restriction on the connector housing side, and the overall structure including the structure of the connector housing can be simplified. Therefore, highly reliable shielded wire connector connection can be realized with a small number of component configurations, and costs can be reduced by reducing the number of components.
According to the configuration of (2) above, the crimping portion of the crimping member surrounds the outer sheath of the shielded wire in a state before crimping the shield member in the portion where the first cylindrical portion is interposed at one end of the shielded wire. Since it is formed in a substantially hollow cylindrical shape so that it can be surrounded over the direction, the crimping member can be preliminarily attached to the shielded electric wire even during assembly. For this reason, compared to the conventional type with shielded cables attached vertically, there is no risk of the support member coming off during assembly work and the crimping member falling off, preventing the parts from falling off, facilitating assembly work, and improving workability To increase productivity.
According to the configuration of (3) above, like the crimping part of the crimping part, the locking piece holding part is formed in a substantially hollow cylindrical shape, and is arranged so as to be substantially concentric with the crimping part. The terminal body can be attached to the connector housing without worrying about the position of the elastic locking piece provided on the connector housing, and the usability can be improved.
According to the configuration of the above (4), it is not necessary to complete the assembly of the terminal body before being assembled into the connector housing, that is, the connector connection and the assembly of the terminal body can be performed substantially simultaneously, The state in which the terminal main body connected to the connector housing is mounted on the connector housing can be realized with a small number of assembly steps, so that the productivity can be improved and the manufacturing cost can be reduced by reducing the assembly cost.

  According to the present invention, when a connector terminal (terminal body) is attached to a connector housing, prevention of inadvertent release of the engagement state between the elastic locking piece of the connector housing and the connector terminal is realized with a simple structure. A connector terminal with a shielded wire that can be provided can be provided.

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

Hereinafter, a preferred embodiment of a connector terminal with a shielded wire (hereinafter also simply referred to as a connector terminal) according to the present invention will be described with reference to the drawings.
In the shielded electric wire of this embodiment, the central conductor that is a core wire is covered with an insulator that is an inner coating, and this insulator is further covered with an outer conductor that is a braid (that is, a shield member), A coaxial cable having a structure in which an outer conductor is covered with an insulating sheath (that is, an outer covering) that protects the inside from an external impact or the like is employed.

  Here, FIG. 1 shows a connector housing in which a shield terminal of a connector terminal with a shielded wire according to an embodiment of the present invention is mounted, and a shielded wire in which a core wire conduction terminal inserted into the shielded wire is mounted. It is a disassembled perspective view. 2 is a longitudinal sectional view showing a state before assembly of the connector housing to which the shield terminal of the connector terminal according to the embodiment of the present invention shown in FIG. 1 is mounted and the crimping member inserted into the connector housing. . FIG. 3 is a perspective view showing a state in which the core wire conduction terminal connected to the end of the shielded electric wire is inserted into the shield terminal held in the connector housing of FIG. 4 is a longitudinal sectional view showing the assembled state shown in FIG. FIG. 5 is a perspective view of a state in which the tip end portion of the crimping member is moved into the connector housing from the state shown in FIG. 6 is a longitudinal sectional view of the assembled state shown in FIG.

  The terminal main body 43a of the connector terminal 43 according to the present embodiment is a plug-type terminal (male connector) connected to the tip of the coaxial cable 1 in order to connect the coaxial cable 1 which is a kind of shielded wire to the counterpart terminal. It is configured as.

  The coaxial cable 1 may have substantially the same structure as that shown in FIG. 7, and as shown in FIG. 1, the central conductor (core wire) 11 that is an internal conductor and the central conductor 11 are enclosed while surrounding the outer peripheral surface of the central conductor 11. 11, an insulator (inner coating) 13 extending in the longitudinal direction, an outer conductor 15 of a braid extending in the longitudinal direction surrounding the outer peripheral surface of the insulator 13 as a shield member, and an outer peripheral surface of the outer conductor 15 Insulating skin (outer coating) 17 extending in the longitudinal direction while surrounding the housing. And the one end part of each of the center conductor 11, the insulator 13, the outer conductor 15, and the insulation outer shell 17 is exposed in the one end part of the longitudinal direction.

  That is, one end of the coaxial cable 1 attached to the terminal main body 43a is a part so that the outer conductor 15 is exposed by a predetermined length L1 from the tip of the insulating outer shell 17 before being attached to the terminal main body 43a. The insulator 13 is partially cut away from the tip of the outer conductor 15 so that the insulator 13 is exposed by a predetermined length L2, and the center conductor 11 is cut from the tip of the insulator 13 by a predetermined length L3. The central conductor 11, the insulator 13, and the outer conductor 15 are exposed at one end in the longitudinal direction of the coaxial cable 1 by being partially cut so as to be exposed.

  As shown in FIG. 6, the terminal body 43a is coupled to one end of the coaxial cable 1 and is engaged with an elastic locking piece (lance) 45a provided on the connector housing 45 when attached to the connector housing 45. This prevents the connector housing 45 from coming off, and realizes double locking that restricts movement of the elastic locking piece 45a in the disengagement direction by a locking piece restraining portion 71 of the crimping member 67 described later. Yes.

  As shown in FIGS. 4 and 6, the terminal main body 43 a is electrically connected to the center conductor 11 by crimp connection at one end of the coaxial cable 1, for electrically connecting the center conductor 11 to the counterpart terminal. A center conductor conduction terminal (core wire conduction terminal: generally called “center contact”) 61 and the center conductor conduction terminal 61 are electrically connected to the center conductor 11 as shown in FIG. An insulating member (for example, a foamed dielectric made of polyethylene or the like) 65 formed with a through-hole 65a that passes through and is locked with the central conductor 11, an outer conductor 15 and an insulator 13 at one end of the coaxial cable 1 The central conductor conducting terminal 61 has a first cylindrical part 63a disposed between the two ends of the first cylindrical part 63a at one end (the left part in the figure) and is fitted around the insulating member 65 and surrounds the center conductor conducting terminal 61. The insulation member A shield terminal 63 made of a conductive metal having a second cylindrical portion 63b supported via 5 at the other end (right side in the figure) and electrically connected to the outer conductor 15, and the coaxial cable 1 It is made of a metal material having a crimping portion 67a for crimping and connecting the outer conductor 15 to the first cylindrical portion 63a by crimping the outer conductor 15 at one end portion where the first cylindrical portion 63a is interposed. And a crimping member 67.

  Here, when the crimping portion 67a of the crimping member 67b is caulked by the above-described first cylindrical portion 63a, deformation of the insulator 13 is prevented, and the outer peripheral surface of the first cylindrical portion 63a is A plurality of grooves are formed in the circumferential direction to enhance the crimping performance of the outer conductor 15 at the time of crimping connection. In addition, the insulating member 65 ensures a predetermined dielectric constant between the central conductor conduction terminal 61 inserted into the shield terminal 63 and the shield terminal 63.

  In addition, the crimping portion 67a can surround the insulating sheath 17 of the coaxial cable 1 in the circumferential direction in a state before crimping the outer conductor 15 in a portion where the first cylindrical portion 63a is interposed at one end portion of the coaxial cable 1. Thus, it is formed in a substantially hollow cylindrical shape (so-called sleeve shape) and is attached to the coaxial cable 1 by a crown. Further, when the crimping portion 67a is positioned on the outer conductor 15 exposed at one end portion of the coaxial cable 1, the outer conductor 15 located on the inner side of the outer conductor 15 is compressed by being crushed by caulking, for example. By being pressed in the radial direction, a crimped connection state in which the outer conductor 15 is in close contact with the first cylindrical portion 63a is realized.

  Further, in the case of the present embodiment, when the terminal main body 43 a is attached to the connector housing 45, the locking piece restraining portion 71 positioned so as to be close to or in contact with the elastic locking piece 45 a is the crimping of the crimping member 67. It is integrally formed so as to extend from the edge part (right part in the drawing) of the part 67 a and to go to the inside of the connector housing 45 along the longitudinal direction of the coaxial cable 1. Thereby, the double locking structure which restrict | limits the movement to the disengagement direction (outer diameter direction) of the elastic locking piece 45a is implement | achieved.

  The locking piece restraining portion 71 is formed in a substantially hollow cylindrical shape, is disposed so as to be substantially concentric with the crimping portion 67 a, and is cylindrical around the elastic locking piece 45 a of the connector housing 45. Is inserted into the holding portion insertion groove 45b formed on the outer periphery of the elastic locking piece 45a so as to surround the outer periphery of the elastic locking piece 45a in a substantially tight contact state and restrict the displacement of the elastic locking piece 45a in the disengagement direction. Become.

  In this way, the crimp member 67 of the substantially hollow cylindrical structure in which the locking piece restraining portion 71 is integrally formed at one end portion (right portion in the drawing) of the crimping member 67 is, for example, substantially the same diameter as the locking piece restraining portion 71. This metallic hollow cylindrical body can be easily formed by drawing.

Next, an assembly method until the assembly state shown in FIG. 6 is obtained will be described.
First, the coaxial cable 1 in which each of the center conductor 11, the insulator 13, and the outer conductor 15 is exposed at one end as described above (shielded wire preparation step) is prepared, and the above-described center conductor conduction terminal 61, A terminal body 43a having an insulating member 65, a shield terminal 63, and a crimping member 67 is prepared (terminal body preparation step).

  Then, a center conductor conducting terminal connecting step (core wire conducting terminal connecting step) for conducting and connecting the center conductor conducting terminal 61 to the center conductor 11 exposed at one end of the coaxial cable 1 is performed, as shown in FIG. The coaxial cable 1 having the central conductor conduction terminal 61 connected to one end is manufactured. At this time, the crimping member 67 is attached to the coaxial cable 1 in a crowned state in a state where it is retracted from the exposed portion located at one end of the coaxial cable 1.

On the other hand, a connector housing assembly process is performed in which the shield terminal 63 with the insulating member 65 attached is inserted into (incorporated into) the connector housing 45 and engaged with and held by the elastic locking piece 45a of the connector housing 45. As shown in FIGS. 1 and 2, a connector housing 45 in which the incorporation of the shield terminal 63 and the insulating member 65 is completed is prepared.
At the time of this insertion, the first cylindrical portion 63 a of the shield terminal 63 is disposed between the outer conductor 15 and the insulator 13.

  Next, as shown in FIGS. 3 and 4, the position where the crimping member 67 is separated from the exposed portion located at one end of the coaxial cable 1 as described above while the crimping member 67 is mounted on the crown of the coaxial cable 1. In the retracted state, the center conductor conducting terminal 61 connected to one end portion of the coaxial cable 1 by the above-described center conductor conducting terminal connecting step is a shield terminal incorporated into the connector housing 45 by the above-described connector housing assembling step. A center conductor conduction terminal insertion step of inserting into 63 is performed.

  Then, as shown in FIGS. 5 and 6, by moving the crimping portion 67 a of the crimping member 67 to a predetermined position for crimping connection at one end of the coaxial cable 1 (that is, the outer periphery of the exposed outer conductor 15). The locking piece restraining portion 71 integrally formed at one end of the crimping member 67 is inserted into the restraining portion insertion groove 45b in the connector housing 45 so as to be positioned close to or in contact with the elastic locking piece 45a. Further, the crimping portion 67a of the crimping member 67 is crimped to the outer conductor 15 using a predetermined tool or the like. As a result, an assembled state is obtained as the connector terminal 43 in which the shield terminal 63 and the outer conductor 15 are fixed by crimping to one end of the coaxial cable 1. In addition, as shown in FIG. 6, the locking piece restraining portion 71 surrounds the outer periphery of the elastic locking piece 45a of the connector housing 45, and the engagement of the elastic locking piece 45a with the shield terminal 63 is released. Since the double locking structure in which the behavior in the direction (outward in the radial direction) is restricted is obtained, the mounting of the connector terminal 43 on the connector housing 45 by the double locking structure is also completed.

As described above, according to the present embodiment, the elastic locking piece 45 a is formed when the terminal main body 43 a is attached to the connector housing 45 and is integrally extended from the edge of the crimping portion 67 a of the crimping member 67. The locking piece restraining portion 71 positioned so as to approach or come into contact regulates the operation of the elastic locking piece 45a in the disengagement direction.
That is, it is possible to regulate the operation of the elastic locking piece 45a in the disengagement direction with a simple structure in which the locking piece holding portion 71 is formed integrally with the crimping member 67 which is a component of the terminal body 43a. For example, it is not necessary to separately provide a part for performing this restriction on the connector housing 45 side, and the overall structure including the structure of the connector housing 45 can be simplified. Therefore, highly reliable coaxial cable 1 connector connection can be realized with a small number of component configurations, and costs can be reduced by reducing the number of components.

Furthermore, according to the present embodiment, the crimping portion 67a of the crimping member 67 is in a state before crimping the outer conductor 15 in the portion where the first cylindrical portion 63a is interposed at one end portion of the coaxial cable 1. Since the outer covering 17 is formed in a substantially hollow cylindrical shape so as to surround the outer covering 17 in the circumferential direction, the crimping member 67 can be pre-mounted on the coaxial cable 1 even during assembly. For this reason, compared with the conventional one with the coaxial cable 1 attached vertically, there is no possibility that the support is detached during the assembly work and the crimping member 67 falls off, and the assembly work is facilitated by preventing the parts from falling off. Can improve productivity and increase productivity. In addition, similarly to the crimping part 67a of the crimping part 67, the locking piece restraining part 71 is formed in a substantially hollow cylindrical shape and is arranged so as to be substantially concentric with the crimping part 67a. The terminal body 43a can be attached to the connector housing 45 without worrying about the position of the elastic locking piece 45a provided on the connector housing 45, and the usability can be improved.
Further, a component in which the crimping portion 67a and the locking piece restraining portion 71 are integrated, that is, the crimping member 67 can be easily mass-produced by drawing a metallic hollow cylindrical body or the like, and the component cost can be reduced by mass production. Can also be planned.

  Furthermore, according to the assembling method of the present embodiment, it is not necessary to complete the assembly of the terminal body 43a before being assembled into the connector housing 45, that is, the connector connection and the assembly of the terminal body 45a can be performed substantially simultaneously. Since the terminal body 43a connected to one end of the coaxial cable 1 can be mounted in the connector housing 45 with a small number of assembly steps, productivity can be improved and manufacturing can be performed by reducing assembly costs. Cost can be reduced.

  In addition, the electric wire connected by the connector terminal according to the present invention is not limited to the coaxial cable shown in the above-described embodiment. For example, various coaxial cables 1 including a central conductor and an outer conductor for shielding. It can also be applied to. For example, in the above-described embodiment, the outer conductor provided between the insulator and the insulating outer shell has been described as having the braid, but the outer conductor is not limited thereto, and the outer conductor is formed of an aluminum foil, a copper foil, Further, a metal foil such as an aluminum foil or a copper foil wound around the outer periphery of the insulator may be further provided. The coaxial cable may be provided with a spiral shield wire instead of the braid.

  Further, the connector terminal according to the present invention is not limited to the plug type shown in the above-described embodiment, but can be applied to a jack or receptacle type.

  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.

It is a disassembled perspective view of the connector housing with which the shield terminal of the connector terminal with a shielded electric wire of one Embodiment concerning this invention was mounted | worn, and the shielded electric wire with which the core wire conduction | electrical_connection terminal inserted in the inside of this shielded electric wire was mounted | worn. It is a longitudinal cross-sectional view of the state before the assembly of the connector housing with which the shield terminal of the connector terminal of one Embodiment which concerns on this invention shown in FIG. 1 was mounted | worn, and the crimping member inserted in this connector housing. It is a perspective view which shows the state by which the core wire conduction | electrical_connection terminal connected to the edge part of a shielded electric wire was penetrated by the shield terminal hold | maintained at the connector housing of FIG. It is a longitudinal cross-sectional view which shows the assembly state shown in FIG. FIG. 4 is a perspective view of a state where the tip end portion of the crimping member is moved into the connector housing from the state shown in FIG. 3 and the crimping member is crimped. It is a longitudinal cross-sectional view of the assembly state shown in FIG. It is a disassembled perspective view which shows the structure of the conventional connector terminal with a shield wire. It is a longitudinal cross-sectional view of the assembly state of the connector terminal with a shield wire shown in FIG. It is a longitudinal cross-sectional view which shows the structure of the connector terminal shown in FIG. 8, and the connector housing to which this connector terminal is mounted | worn. It is a longitudinal cross-sectional view of the assembly state of the connector housing and connector terminal shown in FIG.

Explanation of symbols

1 Coaxial cable (shielded wire)
11 Center conductor (core wire)
13 Insulator (inner coating)
15 Outer conductor (shield member)
17 Insulation skin (outer coating)
43 Connector terminal (Connector terminal with shielded wire)
43a Terminal body 45 Connector housing 45a Elastic locking piece (lance)
45b Holding portion insertion groove 61 Center conductor conduction terminal (core wire conduction terminal)
63 Shield terminal 63a First cylindrical portion 63b Second cylindrical portion 65 Insulating member 67 Crimp member 67a Crimp portion 71 Locking piece restraining portion

Claims (4)

A core wire that is an internal conductor; an inner sheath that extends in the longitudinal direction of the core wire while surrounding the outer peripheral surface of the core wire; a shield member that extends in the longitudinal direction while surrounding the outer peripheral surface of the inner sheath; and the shield An outer covering that extends in the longitudinal direction while surrounding an outer peripheral surface of the member, and a shield in which one end of each of the core wire, the inner covering, and the shield member is exposed at one end in the longitudinal direction. Electric wires,
A terminal body that is coupled to the one end of the shielded wire and attached to the connector housing having an elastic locking piece, and is prevented from being detached from the connector housing by engagement with the elastic locking piece;
A connector terminal with a shielded wire comprising
The terminal body is
A conductive metal core conducting terminal for electrically connecting the core wire to a counterpart terminal, electrically connected to the core wire at the one end of the shielded wire;
An insulating member formed with a through-hole penetrating and locked with the core wire in a state where the core wire conduction terminal is electrically connected to the core wire;
The one end portion of the shielded electric wire has a first cylindrical portion disposed between the shield member and the inner sheath at one end portion, and is fitted on the insulating member and surrounds the core wire conduction terminal. While having the second cylindrical portion that supports the core wire conduction terminal via the insulating member at the other end, and a shield terminal made of conductive metal that is electrically connected to the shield member,
A crimping member;
And the crimp member is crimped and connected to the first cylindrical portion by crimping the shield member at a portion where the first cylindrical portion is interposed at the one end of the shielded electric wire. A crimping part to be
A locking piece holding part that is integrally formed so as to extend from the edge of the crimping part, and is positioned so as to be close to or in contact with the elastic locking piece when the terminal body is attached to the connector housing;
Have
The connector terminal with a shielded wire, wherein the operation of the elastic locking piece in the disengagement direction is restricted by the locking piece holding part. The crimping part may surround the outer covering of the shielded electric wire in a circumferential direction in a state before crimping the shield member at a portion where the first cylindrical part is interposed at the one end of the shielded electric wire. The connector terminal with a shielded wire according to claim 1, wherein the connector terminal is formed in a substantially hollow cylindrical shape. The connector terminal with a shielded electric wire according to claim 2, wherein the locking piece holding portion is formed in a substantially hollow cylindrical shape and is arranged so as to be substantially concentric with the crimping portion. A core wire that is an internal conductor; an inner sheath that extends in the longitudinal direction of the core wire while surrounding the outer peripheral surface of the core wire; a shield member that extends in the longitudinal direction while surrounding the outer peripheral surface of the inner sheath; and the shield An outer covering that extends in the longitudinal direction while surrounding an outer peripheral surface of the member, and a shield in which one end of each of the core wire, the inner covering, and the shield member is exposed at one end in the longitudinal direction. A shielded wire preparation process for preparing an electric wire;
A conductive metal core conducting terminal for electrically connecting the core wire to a counterpart terminal, electrically connected to the core wire at the one end of the shielded wire;
An insulating member formed with a through-hole penetrating and locked with the core wire in a state where the core wire conduction terminal is electrically connected to the core wire;
The one end portion of the shielded electric wire has a first cylindrical portion disposed between the shield member and the inner sheath at one end portion, and is fitted on the insulating member and surrounds the core wire conduction terminal. While having the second cylindrical part supporting the core wire conduction terminal via the insulating member at the other end, and a shield terminal made of conductive metal for being electrically connected to the shield member, ,
A crimping part that crimps and connects the shield member to the first cylindrical part by crimping the shield member at a portion where the first cylindrical part is interposed at the one end of the shielded wire; and an edge of the crimping part And a locking piece holding portion that is integrally formed so as to extend from the portion and is positioned so as to be close to or in contact with the elastic locking piece when the terminal body is attached to the connector housing. When,
A terminal body preparation step of preparing a terminal body having
A core wire conduction terminal connecting step of conducting the core wire conduction terminal to the core wire exposed at the one end of the shielded wire;
A connector housing assembly step of incorporating the shield terminal into the connector housing such that the shield terminal with the insulating member attached is engaged and held by the elastic locking piece of the connector housing;
With the crimping member attached to the shielded electric wire, the shielded electric wire is retracted to a position away from the exposed portion located at the one end of the shield member, and the shielded electric wire is connected by the core wire conduction terminal connecting step. The core wire conduction terminal insertion step of inserting the core wire conduction terminal connected to the one end portion into the shield terminal incorporated in the connector housing by the connector housing assembly step,
After the core wire conducting terminal insertion step, the locking piece restraining portion is brought close to or in contact with the elastic locking piece by moving the crimping portion of the crimping member to a predetermined position for crimping connection of one end of the shielded electric wire. The connector terminal with an electric wire is in an assembled state in which the shield terminal and the shield member are crimped and connected to one end of the shielded electric wire by crimping the crimped portion to the shielded electric wire. Assembly process;
A method of assembling a connector terminal with a shielded electric wire, comprising:

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