JP2001185318A - Twist pair wire fitting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To aim at prevention of deterioration of contact reliability due to twist of a wire and at improvement of workability. SOLUTION: An extended part outside a housing connector 10 of a wire W held by the connector housing 10 in almost linear line is twisted into a twist pair wire Wp, and an insulation displacement terminal fitting 30 fitted in the connector housing 10 and the wire W are pressure welded. Since the two wires W can be connected to the connector housing 10 in almost parallel as they are, there is no need of cumbersome work of untwisting the wire W. Further, the pressure welding of the wire W and the pressure welded terminal fitting 30 comes after twisting of the wire W, so that there is no fear of contact failure of the wire W with the insulation displacement terminal fitting 30 resulting from twisting deformation of the wire W.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling twisted pair wires and a twisted pair wire connector.

[0002]

2. Description of the Related Art As a means for joining two twisted pair wires in which two electric wires are spirally twisted, there is a device disclosed in Japanese Patent Application Laid-Open No. 8-162183. This is to prepare a twisted pair wire for a trunk line and a twisted pair wire for a branch line, assemble them into a connector housing, press-contact the press-connecting terminal fittings provided on the connector housing, and connect both twisted pair wires via the press-connecting terminal fittings. The structure is such that electric wires are connected to each other.

[0003]

As described above, when assembling the connector housing and the twisted pair wire, it is necessary to perform the press-connecting step and the twisting step separately, but when the wire is pressed against the press-connecting terminal fitting and then twisted. In the point of contact stability, there is a concern that the press-contact part of the electric wire with the press-contact terminal fitting may be displaced in the direction crossing the axis due to torsional deformation, resulting in a decrease in contact reliability. It is desirable to twist before pressing. However, when crimping a twisted pair wire in which the wire has been twisted in advance, the troublesome work of returning the twist of the wire in a portion where the wire is assembled to the connector housing and the crimping to the crimp terminal fitting is performed is required. However, it is not preferable in terms of workability. In short, no matter which of the pressing step and the twisting step is performed first, a problem occurs.

In a connector in which a plurality of twisted pair wires are attached to one connector housing, when the wires constituting the twisted pair wires are installed in a straightened state and then the wires are twisted, the connector housing is fixed. In this state, the end of the wire extending from the connector housing to one side is twisted by chucking and rotating the end, and then the wire extending from the connector housing to the other side is twisted. The end portion is chucked and rotated to rotate the twisted portion. However, since the twist needs to be performed in two steps, the work efficiency is poor. It is conceivable to rotate both ends of the electric wire on both sides of the connector housing at the same time. However, in this case, since two rotation driving mechanisms are required, the equipment cost increases.

[0005]

According to a first aspect of the present invention, there is provided a method of attaching a wire constituting a twisted pair wire to a connector housing and pressing the wire and a press-connecting terminal fitting in the connector housing. An electric wire is held in the connector housing in a substantially straight line, a portion of the electric wire extending to the outside of the connector housing is twisted to form the twisted pair wire, and the press-connecting terminal fitting is assembled to the connector housing. The pressure contact terminal fitting and the electric wire were press-contacted.

According to a second aspect of the present invention, in the connector according to the first aspect, the connector housing is formed by combining a plurality of divided housings to which only two electric wires forming one twisted pair wire are attached. Both ends of the two electric wires held in the split housing in a state of being extended in a straight line and parallel to each other are fixed, and the split housing is substantially parallel to the two electric wires and substantially halfway between the two electric wires. By rotating around the axis passing through, the two electric wires are twisted to form the one twisted pair wire,
The split housing on which the twisted pair wires have been formed is combined.

According to a third aspect of the present invention, there is provided a connector housing in which a plurality of twisted pair wires formed by twisting two electric wires are attached, and one of the twisted pair wires and the other are respectively connected to one of the other twisted pair wires. And a joint member for individually joining the electric wire and the other electric wire, wherein the connector housing is capable of holding two electric wires constituting one twisted pair wire and being connectable to each other. It consisted of a plurality of split housings.

[0008]

Operation and Effect of the Invention [Invention of claim 1] Since the electric wire can be attached to the connector housing while being substantially straight, there is no need for a troublesome work of twisting the electric wire back. In addition, since the wire and the press-connecting terminal fitting are pressed after the wire is twisted, there is no possibility that the wire and the press-connecting terminal fitting may have poor contact due to the twisting deformation of the wire. [Invention of claim 2] Since the step of twisting the wire extending from the split housing to one side and the step of twisting the wire extending to the other side can be performed simultaneously,
The efficiency of the twist process can be improved.

In the case where the connector housing to which a plurality of twisted pair wires are attached is a single component, the connector housing must be fixed when twisting the electric wire attached to the connector housing. However, in the present invention, since the connector housing is divided for each twisted pair wire, when twisting the wire, it is possible to rotate both ends of the wire by fixing both ends of the wire for each twisted pair wire. ing. Thereby, the electric wires extending to both sides of the housing can be simultaneously twisted by one rotation drive mechanism.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A first embodiment of the present invention will be described below with reference to FIGS. The twisted pair wire connector A of the present embodiment (hereinafter, referred to as the twisted pair connector A)
The connector housing 10),
It is composed of a holder 20 and a press-connecting terminal fitting 30. In the following description, FIG.
1 is the front side, the horizontal direction is based on FIG. 1, and the vertical direction is based on FIG.

The connector housing 10 is made of a synthetic resin, and has an electric wire accommodating chamber 11 opened on the upper surface. Locking projections 13 are formed on the inner surfaces of the left and right side walls of the electric wire accommodating chamber 11 at three places spaced apart in front and rear thereof. Four electric wires W are attached to the connector housing 10 in parallel in the front-rear direction. In the attached state, each electric wire W is attached along the bottom surface in the electric wire housing 11 and the inner surfaces of the left and right side walls of the connector housing 10, and extends from the electric wire housing 11 to the left and right sides of the connector housing 10. It will be in the state that was done. At the center in the left-right direction on the bottom surface of the wire housing chamber 11, four pairs of escape grooves 14 corresponding to the respective wires W are formed in pairs on the left and right.

The holder 20 is made of a synthetic resin and is attached to the connector housing 10. The main body 21 of the holder 20 closes the opening of the wire housing 11, and a wire holding claw 22 projecting downward toward the wire housing 11 is formed on the lower surface of the body 21. .
The electric wire holding claw 22 has a finger shape that sandwiches the electric wire W from the front and rear, and holds one electric wire W at two positions on the left and right thereof. That is, the wire holding claws 22 are paired on the left and right, and are formed in four pairs so as to be arranged in front and rear. In addition, electric wire relief portions 23 are formed at four front and rear portions on both right and left edges of the main body portion 21. Further, locking claws 24 project downward from both left and right side edges of the main body 21 so as to be located between the adjacent wire relief portions 23.

On the upper surface of the main body 21, two shallow recesses are formed. The first shallow recess 25 is formed in the communication portion recess 2 extending in the front-rear direction in a relatively left region of the main body 21.
5A and a pair of press contact recesses 25B and 25C protruding rightward from both front and rear ends of the communication recess 25A. The second shallow recess 26 includes a connecting portion recess 26A extending in the front-rear direction in a relatively right region of the main body portion 21 and a pair of press contact portion recesses 26B protruding to the left from both front and rear ends of the connecting portion recess 26A. 26C. These four press contact recesses are arranged in a row in the front and rear, and the press contact recesses 25B and 25C of the first shallow recess 25 are located at the forefront and third from the front. Recesses 26B, 26
C is located second and last from the front. Each of the recesses 25B, 25C, 26B, and 26C has a pair of left and right through-holes 27 each having a slit shape for allowing the press-contact blade 33 of the press-contact terminal fitting 30 to pass therethrough. These through holes 27 are provided in the escape grooves 1 of the electric wire accommodation chamber 11 respectively.
Corresponds to 4.

The press-connecting terminal fitting 30 is formed by punching a conductive metal plate material into a predetermined shape and performing a bending process.
And press-contact portions 32 protruding sideways from both ends,
The press contact portion 32 is formed with a pair of left and right press contact blades 33 protruding downward from the left and right end edges. In the press contact blade 33,
A vertical slit 33A having an open lower end is formed, and a guide part 33B having a downwardly expanding tapered shape is formed at the lower end of the slit 33A.

Next, the operation of the present embodiment will be described. At the time of assembling, first, the wire W which remains substantially straight is fitted to the wire holding claw 22 of the holder 20. As a result, these four electric wires W are set so as to be parallel in the front-rear direction with their axes directed in the left-right direction. The holder 20 on which the four electric wires W are set is assembled to the connector housing 10. Along with the assembling, the electric wire W is bent along the bottom surface and the left and right inner side surfaces of the electric wire accommodating chamber 11 and fitted into the electric wire escape portion 23. Also, the holder 20
Of the connector housing 10 is locked to the connector housing 10 so that the holder 20 cannot be disengaged from the connector housing 10. In this state, the electric wire W
When viewed from above, the connector housing 10 extends from the connector housing 10 to both left and right sides in a substantially straight line and parallel to each other.

Thereafter, portions of the two front wires W extending outside the connector housing 10 are spirally twisted. Thus, one twisted pair line Wp is formed. Similarly, the portions of the two rear wires W extending outside the connector housing 10 are also twisted to form another twisted pair wire Wp. After forming the two twisted pair wires Wp in this way, the press-connecting terminal fitting 30 is attached to the connector housing 10. When assembling, press-fit terminal fitting 30 is inserted into shallow recess 2
Each of the press-contact blades 33 is inserted into the through hole 27 while corresponding to the first and second blades 5 and 26. Then, the press contact blade 33 is pressed against each electric wire W in the electric wire housing 11.

As described above, in the present embodiment, since the two electric wires W can be attached to the connector housing 10 while being substantially parallel, the twisted electric wires W are twisted at the attachment portion to the connector housing 10. There is no need for troublesome returning. In addition, since the wire W and the pressure contact terminal fitting 30 are pressed after the wire W is twisted, the wire W is displaced in a direction intersecting the axis due to the torsion deformation of the wire W. There is no danger of a poor contact with 30.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the connector housing 40 has a configuration different from that of the first embodiment. Other configurations are the same as those in the first embodiment, and thus the same configurations are denoted by the same reference numerals, and description of the structures, operations, and effects will be omitted. The twisted pair wire connector B of the present embodiment (hereinafter simply referred to as connector B) is a connector housing 4.
0, a holder 50, and a press-connecting terminal fitting 70 (a joint member which is a component of the present invention). still,
In the following description, the upper side of FIG. 9 is the front side in the front-rear direction, the horizontal direction is based on FIG. 9, and the vertical direction is based on FIG.

The connector housing 40 is made of a synthetic resin and is constituted by connecting the front and rear divided housings 40F and 40R. Front and rear split housing 4
Each of 0F and 40R is formed with an electric wire accommodating chamber 41 which is opened on the upper surface thereof. Engagement projections 42 are formed on the inner surfaces of the left and right side walls of the electric wire housing 41. Two electric wires W constituting one twisted pair wire Wp are attached to each of the split housings 40F and 40R in parallel in front and rear. In the attached state, each electric wire W is attached along the bottom surface in the electric wire accommodating chamber 41 and the inner surfaces of the left and right side walls of the connector housing 40, respectively, and extends to the outside of the split housings 40F and 40R on both left and right sides. . In addition, a relief groove 45 corresponding to each electric wire W is provided at a central position in the left-right direction on the bottom surface of the electric wire accommodating chamber 41.
Are paired on the left and right, and two pairs are formed on the front and back.

A connecting groove 43 is formed on the rear outer surface of the front split housing 40F in the form of a dovetail groove in the left-right direction. The front outer surface of the rear split housing 40R has a connecting rib 44 in the left-right direction. Are formed. The front and rear split housings 40F and 40R are formed by connecting grooves 43 and connecting ribs 44.
The connector housing 40 is integrated into the connector housing 40 by sliding to the left and right while fitting. Holder 50
Is made of a synthetic resin and is attached to the upper surface of the connector housing 40 so as to cover the opening of the wire housing chamber 41.
As in the case of 0, it is composed of two front and rear divided bodies 50F and 50R.
Each divided body 50F, 50R is connected to each divided housing 40F,
Corresponding to 40R, the main body 51 closes the opening of the wire housing chamber 41.

On the lower surface of the main body 51 in each of the front and rear divided bodies 50F and 50R, a wire holding claw 52 projecting downward toward the wire housing chamber 41 is formed. The electric wire holding claw 52 has a finger shape that sandwiches the electric wire W from the front and rear, and holds one electric wire W at two places on the left and right thereof. That is, one divided body 50F, 50
In R, two pairs of wire holding claws 52 are formed so as to form a pair on the left and right, and to line up front and back. In addition, electric wire relief portions 53 are formed at both left and right edges of the main body portion 51. Further, locking claws 54 project downward from both left and right side edges of the main body 51 so as to be located between the adjacent wire relief portions 53.

Also, on the rear outer surface of the front divided body 50F,
A connecting groove 55 having a dovetail shape in the left-right direction is formed, and a connecting rib 56 in the left-right direction is formed on the front outer surface of the rear divided body 50R. Front and rear split body 50F, 50R
By sliding the connecting groove 55 and the connecting rib 56 to the left and right while being fitted, the single-piece holder 50 is obtained. Further, two shallow recesses 57 and 58 are formed on the upper surface of the main body 51 in the front divided body 50F. The first shallow concave portion 57 includes a connecting portion concave portion 57A extending in the front-rear direction in a relatively left region of the main body portion 51,
The connecting portion concave portion 57A has a press contact portion concave portion 57B protruding rightward from the front end thereof, and has an L-shape. The second shallow recess 58 includes a connecting portion recess 58 </ b> A extending in the front-rear direction in a relatively right region of the main body 51, and a connecting portion recess 58.
A has an L-shaped portion having a press contact portion concave portion 58B protruding leftward from the front end of A.

On the other hand, two shallow recesses 59 and 60 are also formed on the upper surface of the main body 51 in the rear divided body 50R. The third shallow concave portion 59 has a concave portion 59A for a communication portion extending in the front-rear direction in a relatively left region of the main body portion 51, and a concave portion 59B for a press contact portion protruding rightward from a rear end of the concave portion 59A for the communication portion. , L-shaped. Fourth shallow recess 60
Has a concave portion 60A for the connecting portion extending in the front-rear direction in a relatively right region of the main body portion 51, and a concave portion 60B for the press contact portion protruding leftward from the rear end of the concave portion 60A for the connecting portion.
L-shaped.

In a state where the front and rear divided bodies 50F and 50R are connected to each other, the connecting portion concave portions 57A and 59A of the first and third shallow concave portions 57 and 59 are connected to each other back and forth, and the second and fourth shallow concave portions are connected. Concave portions 58A, 60A for connecting portions of concave portions 58, 60
They are continuous back and forth. Also, in order from the front, a first press-contact portion concave portion 57B, a second press-contact portion concave portion 58B, a third press-contact portion concave portion 59B, and a fourth press-contact portion concave portion 60B are arranged.
The first and third shallow recesses 57, 59 have a press contact recess 57B,
59B are connected to each other via the connecting portion recesses 57A, 59A, and the press contact portions 58B, 60B of the second and fourth shallow recesses 58, 60 are connected to the connecting portion recesses 58A, 60A.
Connected through. Furthermore, the recesses 57B, 58
Each of B, 59B, and 60B is formed with a pair of left and right through holes 61 each having a slit shape for allowing the press contact blade 73 of the press contact terminal fitting 70 to pass therethrough. These through holes 6
Numerals 1 correspond to the escape grooves 45 of the electric wire accommodating chamber 41, respectively.

The crimp terminal fitting 70 has the same form as the crimp terminal fitting 30 of the first embodiment. That is, a conductive metal plate material is punched into a predetermined shape and subjected to a bending process, and includes a connecting portion 71 extending in the front-rear direction and press-contact portions 72 protruding laterally from both ends of the connecting portion 71. The press contact portion 72 is formed with a pair of left and right press contact blades 73 protruding downward from both left and right edges. The press-contact blade 73 is formed with a vertical slit 73A having an open lower end edge, and a tapered guiding portion 73B that extends downward at the lower end of the slit 73A.

Next, the operation of the present embodiment will be described. When assembling, first, the connector housing 40 is separated into two divided housings 40F and 40R.
The holder 50 is kept separated into two divided bodies 50F and 50R. Then, two electric wires W, each of which remains substantially straight when viewed from above, are fitted into the electric wire holding claws 52 of the divided bodies 50F, 50R, respectively. As a result, the two electric wires W are set so as to be parallel in the front-rear direction with the axis line oriented in the left-right direction. The divided bodies 50F and 50R on which the two electric wires W are set as described above are assembled to the corresponding divided housings 40F and 40R, respectively. With the assembly, the electric wire W is bent along the bottom surface and the left and right inner side surfaces of the electric wire accommodating chamber 41, and the electric wire release portion 5 is formed.
3 is fitted. Further, the locking claws 54 of the divided bodies 50F, 50R are locked to the locking projections 42 in the electric wire accommodating chamber 41, so that the divided bodies 50F, 50R are separated from the divided housings 40F, 4F.
Locked irremovably with respect to 0R. In this state, the electric wires W extend from the divided housings 40F and 40R to both left and right sides in a substantially straight line and substantially parallel to each other.

Thereafter, the divided housings 40F, 40R
In each case, individually, the divided housings 40F in the electric wire W,
The portion extending to the outside of 40R is spirally twisted. In this twisting step, both ends of the electric wire W are fixed and held by fixtures (not shown), and the divided housings 40F and 40R are fixed to a rotating member (not shown).
Then, the rotating member to which the divided housings 40F and 40R are fixed is rotated about an imaginary axis that is substantially parallel to the two extending wires W and passes through substantially the middle between the two wires W. This operation is performed in both of the divided housings 40F and 40R, so that the divided housings 40F and 40R
A twisted pair line Wp is formed for each R.

In this manner, the two twisted pair wires Wp
Is formed, the split housings 40F and 40R are connected to form the connector housing 40, and the split bodies 50F and 50R are connected to form the holder 50. At this time, the connecting grooves 43 and the connecting ribs 44 of the split housings 40F and 40R are fitted together, and at the same time, the split bodies 50F and 50R are
The connection groove 55 of R and the connection rib 56 are also fitted. After this,
The press-connecting terminal fitting 70 is attached to the connector housing 40. When assembling, each press-connecting blade 73 is made to correspond to the press-connecting terminal fitting 70 to the shallow recess 57, 58, 59, 60.
Into the through-hole 61. At this time, the press-connecting terminal fitting 70 extends between the divided housings 40F and 40R. With the installation of the insulation displacement terminal fitting 70,
In the electric wire accommodating chamber 41, the press contact blade 73 is pressed against each electric wire W.

As described above, in the present embodiment, the two electric wires W can be attached to the connector housing 40 while being substantially parallel, so that the twisted electric wires W are twisted at the attachment portion to the connector housing 40. There is no need for troublesome returning. Further, since the wire W and the press-connecting terminal fitting 70 are pressed after the wire W is twisted, the wire W is displaced in a direction intersecting the axis due to the torsional deformation of the wire W. There is no danger of a poor contact with 70.

When the connector housing to which a plurality of twisted pair wires Wp are attached is made as a single component, the connector housing 40 must be fixed when twisting the electric wire W attached to the connector housing. In the present embodiment, since the connector housing 40 is divided for each twisted pair wire Wp, when the electric wire W is twisted, both ends of the electric wire W are fixed for each twisted pair wire Wp and the divided housings 40F, 40
It is possible to rotate R. This allows
A step of twisting an electric wire W extending to one side from the split housings 40F and 40R and an electric wire W extending to the other side
And the step of twisting can be performed simultaneously,
The efficiency of the twist process can be improved. Further, since only one rotation drive mechanism is used in the twisting step, the equipment cost can be reduced.

[Other Embodiments] The present invention is not limited to the embodiment described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) In the above embodiment, a case where two twisted pair wires are joined has been described, but the present invention can also be applied to a case where three or more twisted pair wires are joined.

(2) In the second embodiment, one connector housing is constituted by two divided housings. However, according to the present invention, one connector may be constituted by three or more divided housings. (3) In the second embodiment, the joint member has a shape in which a plurality of press contact blades pressed against the electric wire of each split housing are integrated. However, according to the present invention, a separate press contact terminal fitting is provided for each split housing. The press-connecting terminal fittings may be connected to each other by connecting the mounting and split housings.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state where an electric wire according to a first embodiment is attached to a connector housing.

FIG. 2 is a plan view showing a state where a press-contact terminal fitting is attached.

FIG. 3 is a sectional view of a separated state.

FIG. 4 is a sectional view of an assembled state.

FIG. 5 is a sectional view of a state before the press-connecting terminal fitting is assembled.

FIG. 6 is a perspective view of an insulation displacement terminal fitting.

FIG. 7 is a plan view showing a state where an electric wire is attached to a front split housing according to the second embodiment.

FIG. 8 is a plan view showing a state where an electric wire is assembled to a rear split housing.

FIG. 9 is a plan view showing a state where the divided housing and the divided body are connected to each other.

FIG. 10 is a plan view showing a state where the press-connecting terminal fitting is assembled.

FIG. 11 is a sectional view showing a state before the press-connecting terminal fitting is assembled.

FIG. 12 is a side view showing a state where assembly is completed.

[Explanation of symbols]

 A: Connector Wp: Twisted pair wire W: Electric wire 10: Connector housing 30: Pressure contact terminal fitting B: Connector Wp: Twisted pair wire W: Electric wire 40: Connector housing 40F: Split housing 40R: Split housing 70: Press contact terminal fitting (joint member)

Claims (3)

[Claims] 1. A method of attaching an electric wire constituting a twisted pair wire to a connector housing and press-contacting the electric wire and a press-connecting terminal fitting in the connector housing, wherein the electric wire is substantially linearly connected to the connector housing. Holding, twisting an extended portion of the electric wire to the outside of the connector housing to form the twisted pair wire, and assembling the press-contact terminal metal to the connector housing to press-contact the press-connect terminal metal to the electric wire. A method for assembling a twisted pair wire, characterized in that: 2. The connector housing according to claim 1, wherein a plurality of split housings to which only two electric wires constituting one twisted pair wire are attached are combined.
In the above description, both ends of the two electric wires held in the divided housing in a state of being extended substantially linearly and parallel to each other are fixed, and the divided housing is substantially parallel to the two electric wires. The two wires are twisted to form the one twisted pair wire by rotating about an axis passing through substantially the middle of the two wires, and the split housing having the twisted pair wire formed is united. Assembling method of twisted pair wire. 3. A connector housing to which a plurality of twisted pairs formed by twisting two electric wires are attached.
A joint member for individually joining one wire and the other wire in each twisted pair wire to one wire and the other wire of the other twisted pair wire, wherein the connector housing has one A twisted pair wire connector comprising a plurality of split housings capable of holding two electric wires constituting a twisted pair wire and being connectable to each other.