JPH0357583B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a connector used for connecting core wires such as communication cables.

"Prior art" Conventionally, as a connector used to connect the core wires of a communication cable, for example,
Techniques disclosed in JP-A No. 98990, Japanese Patent Application Laid-open No. 72373-1987, and the like have been proposed. In these conventional technologies, the connector is composed of parts that are divided into three or more parts, and after inserting the core wire of the cable between each part, each part is assembled and fixed together. and the core wire are integrated.

``Problems to be Solved by the Invention'' However, with such conventional technology, when performing wiring work such as series connection or branch connection of communication cables, each core wire is pulled out near the connector and each line is connected separately. There arises a need to connect while keeping them aligned. For this reason, there were problems that needed improvement, such as poor workability and the risk of erroneous wiring.

The present invention has been made in view of the above-mentioned circumstances, and has the following objects: to minimize the number of component parts of the connector, to improve handling by making it possible to easily fix the core wire to the top cover, and so on. The purpose is to

"Means for Solving the Problem" In order to achieve this purpose, by fitting the upper cover 2 to the upper part of the connector body 1, the parallel core wires a extended in the left and right direction are connected to the connector body 1.
In the connector for electrically connecting a plurality of contacts 4 embedded in the connector body 1, the ends of the contacts 4 are provided in a protruding state with the notches 16 facing upward, and the upper cover 2 includes:
A plurality of fixing parts 21 and 22 are provided at the lower surface position for supporting the core wire a and inserting the core wire a into the notch 16 of the contact 4 during fitting.
1 and 22, arcuate grooves 24 and 25 with openings facing downward for integrally holding the inserted core wire a are formed by plastically deforming both side walls so as to narrow the gap therebetween. The connector is characterized by:

"Operation" By fitting the top cover 2 onto the top of the connector body 1, the core wire a extending in the left-right direction becomes electrically connected to the contacts 4.

In addition, in the fixed parts 21 and 22, each core wire a
By inserting the tips of the core wires into the arcuate grooves 24 and 25, the core wire a is plastically deformed so as to narrow the distance between the side walls of the arcuate grooves 24 and 25, and the core wire a is held between the ends. Since it is integrated with the top cover 2, the cable can be transported and attached to and detached from the connector body 1 with the top cover 2 attached to the tip of the cable.
In this case, no parts other than the connector main body 1 and the top cover 2 are required to fix the core wire a.

A plurality of core wires a are connected to the fixing parts 21 and 2 on the lower surface of the upper lid 2.
When the top cover 2 is fitted onto the connector main body 1 while being supported by the contacts 2, the core wire a pushed into the arcuate grooves 24 and 25 is pushed into the notch 16 of the contact 4, thereby establishing an electrical connection. It will be done.

On the other hand, by removing the top cover 2 from the connector body 1, the electrical connection is released while the core wire a is supported by the top cover 2.

"Embodiments" Hereinafter, embodiments of the connector according to the present invention will be described with reference to FIGS. 1 to 7.

In the figure, 1 is the connector body, 2 is the upper cover, and a is the core wire. FIG. 1 shows a state in which a plurality of core wires a are connected linearly and in parallel to a connector (consisting of a connector body 1 and a pair of upper lids 2).

First, the connector main body 1 will be explained based on FIGS. 1 and 2. The connector body 1 is arranged in the left-right direction (the direction in which the core wires a are connected linearly) and the front-back direction (the direction in which the core wires a are arranged in parallel)
By loading a plurality of contacts 4 from above into an insulator 3 which has a symmetrical shape and is integrally molded from a material such as thermoplastic plastic, the contacts 4 are spaced apart in the front-rear direction. They are buried in parallel.

The upper part of the insulator 3 has an opening in the upper part in order to fit the upper cover 2 (or fit the lower part of the same type of connector main body as described later) and to insert and attach the contacts 4 during assembly. In addition, the recessed portion 5 has a symmetrical shape in the left-right direction and the front-back direction.
is provided. At the left and right center position of this recess 5,
A plurality of fitting guide pieces 6 are provided so as to protrude upward from the inner bottom of the recess 5 at the same pitch as the contacts 4 and shifted by half a pitch in the front-rear direction. Engagement slits 7 are provided on both sides of the fitting guide piece 6 along the vertical direction, and the upper lid 2
Alternatively, the connector body is positioned to be engaged with the lower part of the connector body of the same type.

Further, on both sides of the recessed portion 5, “comb-shaped” fitting side pieces 8 are provided at the same pitch as the fitting guide pieces 6, and between each fitting side piece 8, the contact 4 is The fitting side piece 8 has a notch 9 with a part facing outward on both sides, and the upper lid 2 is formed by passing through this in the left and right direction.
Alternatively, a holding hole 10 is provided for maintaining the state when engaged with the lower part of the connector main body of the same type. At the lower position of these fitting side pieces 8, an engagement recess 11 is provided for tightly engaging the fitting guide piece 6 of the connector main body of the same type. A locking protrusion 12 is provided for fitting into the locking slit 7 of the main body.

On the other hand, a slit 13 of the same type is provided at the outer bottom of the insulator 3 so that a part of each contact 4 (a connecting piece to be described later) faces downward, and the tip of the contact 4 of the same type of connector body can be inserted thereinto. A plurality of engagement holes 14 are provided into which the fitting side pieces 8 of the connector body of the same type are inserted, and the fitting side pieces 8 of the connector body of the same type are inserted into the left and right inner wall surfaces of the engagement holes 14. A locking protrusion 1 that engages with the holding hole 10 when the
5 are provided respectively.

To supplement the explanation of the contact 4 based on FIG. 3, as shown in FIG. line a
By inserting the insulating coating b, a notch 16 is provided for electrical connection with the conductor c by breaking the insulation coating b, and the connecting piece 17 connecting the left and right sides is connected to the notch 1 of the contact 4 in the connector body of the same type.
6, the thickness of the portion facing downwardly by the slit 13 in the front-rear direction is slightly larger than the interval between the notches 16. A protruding stopper 18 is provided so as to bite into the wall of the insulator 3 and fit into the wall of the insulator 3 when the insulator 4 is attached to the insulator 3.

Next, the upper lid 2 will be explained based on FIG. 4. The upper lid 2 is integrally molded in a symmetrical shape in the front-rear direction using engineering plastic that can be plastically deformed when heated or at room temperature, and a pair of the upper lids 2 are fitted into the recesses 5 of the connector body 1. The lower part of the upper cover 2 has different amounts of downward protrusion, and as shown in FIGS. 4B, D, and E,
Step-shaped fixing parts 21 and 22 for supporting the tip of the core wire a at a plurality of positions spaced apart in the left-right direction (lengthwise direction of the core wire a), both fixing parts 21,
A plurality of sets of guide grooves 23 located between the contacts 22 are provided in accordance with the pitch of the contacts 4, and as shown in FIG. It is set to protrude downward.

These fixing parts 21 and 22 have arcuate grooves 24 whose lengths are aligned in the left-right direction and whose openings are directed downward, in order to fix each core wire a in a stretched state as described later. , 25 are provided. Fixing part 21 and guide groove 23 that protrude large downward
A plurality of connection holes 26 are provided in a portion located between the contact holes 26 for accommodating the tips of the contacts 4 when the top cover 2 is fitted into the recess 5.

In addition, fitting grooves 27 and 28 are provided on both sides of the upper lid 2, respectively, for fitting the fitting guide piece 6 and the fitting side piece 8 in the vertical direction.
These fitting grooves 27 and 28 include locking protrusions 29 that fit into the holding holes 10 of the fitting side pieces 8 and the engagement slits 7 of the fitting guide pieces 6 to prevent them from coming off.
30 are provided. Reference numeral 31 in the figure is a marking hole provided near one end of the upper surface of the upper lid 2 in the front-rear direction.

When a communication cable is connected using a connector configured in this manner, the combination of the connector body 1 and the top cover 2 is changed depending on the circuit connection method.

Further, each core wire a of the communication cable is fixed to the top cover 2 by the procedure shown in FIG. That is,
As shown by the double arrow in FIG.
The two side walls 4 and 25 are plastically deformed by heating or at room temperature so as to narrow the distance between them, and the core wire a is tightly held between the two side walls and fixed in the state shown in FIG. 5B. When the cable is fixed in this way, the tip of each core wire a is integrated with the top cover 2, so that it can be transported or detached from the connector body 1 freely with the top cover 2 attached to the tip of the cable. You will get it.

For example, when arranging a plurality of core wires a in a cable in a line equal to the number of contacts 4 and connecting them in a straight line in the left-right direction, connect the core wires a as only one side (left side) is shown in FIG. The top cover 2 in this state is moved in the direction of the arrow to fit it into the connector main body 1, respectively. As a result of this fitting operation, as shown by the chain line in FIG.
The conductor c and the contact 4 are connected to each other by breaking the insulation coating b. By fitting a pair of upper covers 2 on both sides of the connector main body 1 in this way, the left and right core wires a are connected via the contacts 4. Then, the two fixing parts 21,
When the core wires a are fixed to the wires 22 in an uneven manner, when a tensile force is applied to the core wires a, the core wires a are stretched, but as shown by the chain lines in FIG.
Since the core wire a is bent in the vicinity of the outer fixing part 21, a component force is generated in which the core wire a is pressed against the arcuate groove 24, and a frictional force acts, increasing the resistance force. Become.

When the connector main body 1 and the upper cover 2 are in a fitted state, the engagement slit 7 of the fitting guide piece 6 and the locking protrusion 30 of the fitting groove 28 are engaged, and the fitting side piece 8 The holding hole 10 and the locking protrusion 29 of the fitting groove 27 are engaged with each other, and the upper cover 2 is prevented from shifting in the vertical and horizontal directions.

Next, a case where cables are branched and connected will be explained. As shown in FIG. 7, a plurality of connector bodies 1 can be used to connect to each other in a staggered manner.

For example, as shown in FIG.
By fitting a pair of upper lids 2 on both the left and right sides of the recessed portion 5, one connector main body and one upper lid of the same type can be connected to the core wire a in the left-right direction according to FIG. 1. Can be used to connect branches. In other words, in the lower right half of FIG. 7 of the outer bottom of the connector main body 1 with the pair of left and right upper covers 2 fitted,
The upper left half of the connector main body 1 of the same type without the upper cover 2 fitted on the left side is engaged.
Due to this engagement, the connecting piece 1 of the original contact 4
7 is electrically connected to the notch 16 of the contact 4 of the same type, and the fitting side piece 8 is connected to the locking protrusion 15 of the engagement hole 14.
The holding hole 10 of the fitting guide piece 6 is engaged, and the locking protrusion 12 of the engagement recess 11 is engaged with the engagement slit 7 of the fitting guide piece 6, thereby being held in a stable state. Connection between a connector body of the same type and a branch cable can be easily made by fitting the right half of the top cover 2 connected to each core wire a of the branch cable. In this way, by applying the method shown in FIG. 7, the connector body 1 can be connected in a stepwise or pyramidal manner, so that branching of the circuit can be changed freely.

In addition, when separating the connector main body 1 and the top cover 2, when separating the connector main body 1 and a connector main body of the same type, it is done by separating them from each other in the vertical direction, and by separating them once. It is also possible to connect them in combination again.

"Effects of the Invention" As is clear from the above explanation, the connector according to the present invention consists of two types, the connector body and the top cover, so the types of component parts of the connector are compared with those of the conventional example. can be reduced.

A fixing part is provided on the underside of the top lid, and
Since it is fixed by plastically deforming both side walls of the arc-shaped groove of the fixing part and holding the core wire, there is no need for an increase in the number of parts for fixing, and it is also possible to attach the core wire to the top lid. Managed as a fixed state and independent from the connector body,
Can be transported.

The fixing part on the top cover allows for efficient circuit connection and disconnection while the cable core remains fixed to the top cover, and the core wire does not come loose, preventing wiring errors when the circuit continues. can be prevented.

It has the following effects.

[Brief explanation of drawings]

The drawings show one embodiment of the connector according to the present invention, in which Fig. 1 is a perspective view of the connected and assembled state of the core wires, Fig. 2A is a plan view of the connector main body, Fig. 2B, C and D are respectively shown in Figure 2A.
Fig. 3A is a front view of the contact portion;
Figures 3B, C, and D are views taken along lines B-B, CC, and D-D in Figure 3A, Figure 4A is a bottom view of the upper lid, and Figures 4B to 4 Figure F is a view taken along line B-B or F-F in Figure 4A, respectively. Figures 5A, B, and C are explanatory views of the core wire fixing work. Figure 6 is the fitting between the top cover and the connector body. FIG. 7 is a front view illustrating the attachment process, and a perspective view illustrating an example in which the connector bodies are connected in a staggered manner. a... Core wire, b... Insulation coating, c... Conductor, 1... Connector body, 2... Top cover, 3... Insulator, 4... Contact, 5... Recess, 9... Notch, 16... Notch, 2
1, 22... Fixed part, 23... Guide groove, 24, 25
...Arc-shaped groove, 26...Connection hole.

Claims (1)

[Claims] 1 A connector for electrically connecting parallel core wires a extended in the left-right direction to a plurality of contacts 4 embedded in the connector body by fitting a top cover 2 onto the top of the connector body 1. In the connector main body, the ends of the contacts are provided in a protruding state with the notches 16 facing upward, and the upper lid is provided at a lower surface position to support the core wires and prevent the core wires from being inserted into the contacts when mating. A plurality of fixing parts 21 and 22 are provided to be inserted into the notch, and each of the fixing parts has an opening for integrally holding the inserted core wire by plastically deforming both side walls to narrow the gap therebetween. Arc-shaped groove 2 facing downward
A connector characterized in that numbers 4 and 25 are formed.