JP2000173685A - Insulation displacement contact joint connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out a connection process for each wire, whenever necessary and to provide a pressure contact joint connector applicable to multiple wire connection. SOLUTION: This insulation displacement contact joint connector is provided with an insulation displacement contact blade body 4 and a cylinder body 3. In the insulation displacement contact blade body 4, a plurality of tooth parts 7 are arranged, and between the adjacent tooth parts 7, insulation displacement contact grooves 8 are arranged respectively, while the cylinder body 3 housing the insulation displacement contact blade body 4 on the inside and having projection groove 10 protruding outward in a part of its inner circumferential face 3a is constructed freely rotatably relative to the insulation displacement contact blade body 4. In a position in which the projection groove 10 of the cylinder body 3 and the insulation displacement contact groove 8 of the insulation displacement contact blade body 4 match with each other, an electrical wire insertion hole 11 having a diameter larger than that of an electrical wire W at least is formed of the projection groove 10 and the insulation displacement contact groove 8. In the positions, in which the projection groove 10 of the cylinder body 3 and the insulation displacement contact groove 8 of the insulation displacement contact blade body 4 do not match with each other, an electrical wire insulation displacement contact hole 12 smaller than the diameter of the electrical wire W is constructed of the inner circumferential face 3a of the cylinder body 3 and the insulation displacement contact groove 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press-fit joint connector for interconnecting a plurality of electric wires.

[0002]

2. Description of the Related Art A conventional press-fit joint connector of this type is disclosed in Japanese Patent Application Laid-Open No. 6-251810. FIG. 4 is an exploded perspective view of the press-connecting connector 30, FIG. 5 is a perspective view of the press-connecting connector 30, and FIGS. 6A and 6B are front views of the rotary press-connecting terminal. 4 to 6, the press-fit joint connector 30
Are the external rotating body 31, the internal rotating body 32,
And 3. The external rotating body 31 is composed of a pair of semi-cylindrical divided bodies 31a and 31b, and the pair of divided bodies 31a and 31b are rotatably supported via one ends of each other. A locking means 34 is provided on the other end side of each of the divided bodies 31a and 31b, and is configured to be connectable by the locking means 34. Inside each of the divided bodies 31a and 31b, a housing chamber 35 is formed, and an electric wire insertion hole 36 communicating with each of the housing chambers 35 is formed. Further, a plurality of lock portions 37 are provided at equal intervals in the circumferential direction on the outer periphery of each divided body 35a.

The internal rotating body 32 is composed of a cylindrical body 32a and a support shaft 32b protruding from both sides thereof, and is rotatably housed in a housing chamber 35 of the external rotating body 31 together with a rotary pressure contact terminal 33. An arc-shaped wire insertion hole 3 is formed in the cylindrical body 32a.
8 are formed at two places, and a rotating arm 39 is provided so as to protrude from the outer peripheral surface of the cylindrical body 32a.

The rotary pressure contact terminal 33 has a disk shape and has a center hole 33a formed at the center. By inserting the shaft 32b of the internal rotating body 32 into the center hole 33a, the rotary press contact terminal 33 is configured to be integrally connected to the internal rotating body 32. In addition, the rotary press contact terminal 33 has a press contact hole 4.
0 are provided at two places, and each press-contact hole 40 has a large-diameter portion and a portion that gradually decreases from the large-diameter portion.

The two electric wires W1 and W2 each include a core wire (not shown) and an insulating sheath (not shown) covering the core wire.

In the above configuration, the rotary press terminal 33 is inserted into the support shaft 32b of the internal rotary body 32, and the internal rotary body 32 and the rotary press terminal 33 are connected to one of the divided bodies 31a, 31b of the external rotary body 31. And a pair of divided bodies 31a and 31b are joined to each other via locking means 34. Next, when the electric wires W1 and W2 are inserted from the electric wire insertion holes 36 of the external rotating body 31, the electric wires W1 and W2 pass through the press-contact holes 40 of the rotary press-connecting terminal 33 and the electric wire insertion holes 38 of the internal rotating body 32, respectively. The ends of the electric wires W1 and W2 are pulled out from the electric wire insertion holes 36 on the opposite side of the external rotating body 31. In this state, the electric wires W1 and W2 are located at the large diameter portion of the press contact hole 40 of the rotary press terminal 33 as shown in FIG.

Next, when a rotational force in the direction of the arrow a in FIG. 5 is applied to the rotating arm 39, the rotating arm 39 is rotated while receiving a slight rotation inhibiting force from each lock portion 37. When the rotation arm 39 rotates in this manner, the rotation pressure contact terminal 33 together with the internal rotation body 32 with respect to the external rotation body 31.
Rotates, and the positions of the electric wires W1 and W2 gradually move to the small diameter portion of the press contact hole 40. Then, as shown in FIG. 6B, the insulation sheath of each of the electric wires W <b> 1 and W <b> 2 is broken, and the core wire is brought into pressure contact with the rotary pressure contact terminal 33. Thereby, each electric wire W
1 and W2 are electrically connected to the rotary pressure contact terminal 33, and the two electric wires W1 and W2 are electrically connected by the pressure contact joint connector 30. Thus, the two electric wires W1, W
Without terminal processing such as peeling and terminal punching the connection of 2,
And it can be performed without a large-scale tool.

Another conventional press-fit joint connector is disclosed in Japanese Patent Application Laid-Open No. 6-251810. FIG. 7 is an exploded perspective view of the press-connecting joint connector 30. FIG.
It is a perspective view of. 7 and 8, the press-connecting joint connector 30 is connected to the external rotating body 3 in the same manner as in the conventional example.
1, an internal rotating body 32, and a rotary press contact terminal 33. The external rotator 31 has a cylindrical shape with one end open and the other end closed.
2 can be inserted. A rotation guide groove 41 is formed on the inner peripheral surface of the outer rotating body 31.

The internal rotating body 32 is composed of a pair of semi-cylindrical divided bodies 42a and 42b.
a and 42b are configured to be connectable. Internal rotating body 3
2, a housing chamber 43 is formed.
The rotary press contact terminal 33 is configured to be accommodated therein. or,
An electric wire insertion hole 4 communicating with the accommodation chamber 43 is provided in the internal rotating body 32.
4 are provided in two places.

The rotary pressure contact terminal 33 has a disk shape, and is provided with two pressure contact holes 40 having the same configuration as that of the conventional example. A rotation guide projection 45 is provided on the outer periphery of the rotary pressure contact terminal 33 so as to protrude therefrom.

The two electric wires W1 and W2 are also formed of a core wire (not shown) and an insulating sheath (not shown) for covering the core wire, similarly to the conventional example.

In the above configuration, the rotary pressure contact terminal 33 is accommodated in the accommodation chamber 43 in one of the divided bodies 42a and 42b of the internal rotating body 32, and the pair of divided bodies 42a and 42b are joined. Next, each electric wire W1, W2 is connected to the internal rotating body 3
2, each of the wires W1, W
2 is inserted into the press contact hole 40 of the rotary press terminal 33. In this state, the wires W1 and W2 are
It is located at the large diameter portion of the press contact hole 40 of the rotary press terminal 33.

Next, the internal rotating body 32 is inserted into the external rotating body 31 with a predetermined alignment. Then, the rotation guide projection 45 of the rotary press contact terminal 33 is connected to the external rotating body 3.
The rotation press contact terminal 33 is rotated in conjunction with the insertion of the internal rotating body 32 by engaging with the first rotation guide groove 41. Due to the rotation of the rotary press terminal 33, the position of each of the wires W1 and W2 gradually moves to the small diameter portion of the press contact hole 40, and the insulating sheath of each of the wires W1 and W2 is broken and the core wire becomes the rotary press terminal as in the conventional example. 33 is brought into a pressed state. As a result, the electric wires W1 and W2 are electrically conducted to the rotary press contact terminal 33, and the two electric wires W1 and W2 are electrically connected by the press-connecting joint connector 30. In this other conventional example, similarly to the above-mentioned conventional example, the connection of the two electric wires W1 and W2 can be performed without terminal treatment such as peeling or terminal punching and without a large-scale tool. is there.

[0014]

However, in each of the conventional press-connecting connectors 30, the wires W1, W
The two connection steps had to be performed at once, and one connection could not be performed at any time. In addition, the above-described respective configurations aim at one-to-one electric wire connection, and a large number of electric wire connections cannot be made.

Accordingly, the present invention has been made to solve the above-mentioned problems, and the connecting process of each wire can be performed as needed, and is suitable for connecting a large number of wires. It is an object of the present invention to provide a press-fit joint connector having a simple structure.

[0016]

According to a first aspect of the present invention, there is provided a pressure contacting device having a plurality of teeth spaced apart in an outer peripheral direction, and a press contact groove formed between the adjacent teeth. A blade body, which accommodates the press-contact blade body therein, and has a convex groove protruding outward on a part of the inner peripheral surface, and is configured to be rotatable relative to the press-contact blade body. With a cylinder,
At a position where the convex groove of the cylindrical body and the press-contact groove of the press-contact blade body coincide with each other, an electric wire insertion hole having a diameter at least larger than a diameter of an electric wire is formed by the convex groove and the press-contact groove, At each location where the convex groove of the cylindrical body and the press-contact groove of the press-contact blade body do not coincide, an electric wire press-contact hole smaller than the diameter of the electric wire was formed by the inner peripheral surface of the cylindrical body and the press-contact groove. It is characterized by the following.

In this press-fit joint connector, when the electric wire is inserted into the wire insertion hole and the cylindrical body is rotated relative to the press-contact blade to a position where the position of the convex groove coincides with the adjacent press-contact groove, this rotation causes The space into which the wire is inserted changes into a wire pressure contact hole, and the insulation sheath of the wire is broken by the pressure contact blade, and the wire and the pressure contact blade are electrically connected to each other. And the wire insertion hole is formed at this position.

According to a second aspect of the present invention, there is provided the press-connecting connector according to the first aspect, wherein the tubular body has a wall portion for preventing the inserted distal end of the electric wire from being pulled out to the outside. And

In this press-fit joint connector, in addition to the operation of the first aspect of the present invention, the distal end of the wire inserted into the cylinder cannot be pulled out of the cylinder, so that the end of the wire serves as an electrical connection point.

According to a third aspect of the present invention, there is provided the press-fitting joint connector according to the first aspect, wherein the tubular body has an electric wire outlet for drawing out a tip end of the inserted electric wire to the outside.

In this press-fit joint connector, in addition to the operation of the first aspect, by pulling out the distal end side of the electric wire inserted into the cylindrical body from the electric wire outlet, an intermediate position of the electric wire can be used as an electrical connection point.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1A is a perspective view of a press-connecting joint connector 1 according to a first embodiment of the present invention, and FIG.
FIG. 2A is a cross-sectional view taken along the line AA, and FIG. 2 is a cross-sectional view of the press-fit joint connector 1 showing a wire press-contact state.

1 and 2, the press-connecting joint connector 1 is composed of an internal housing 2 and a cylindrical body 3 in which the internal housing 2 is housed. The inner container 2 includes a support shaft 6, a press-contact blade 4 fixed to the support shaft 6, and a gear-shaped body 5. A jig engaging hole 6a is formed in the support shaft 6 in the axial direction, and the jig 20 can be inserted into the jig engaging hole 6a. The jig engaging hole 6a and the jig 20 are provided with rotation preventing means (not shown) such as a key groove and a key projection.

The pressure contact blade 4 is formed of a conductive member in a gear shape. That is, a plurality of teeth 7 are provided at regular intervals in the outer peripheral direction, and the side surface of each tooth 7 is formed in a blade shape. The space between the adjacent teeth 7 is formed as a press contact groove 8. In the first embodiment, eight teeth 7 are provided. The pressure contact blade 4 is disposed at a substantially central position in the cylindrical body 3, and each tip of the plurality of teeth 7 is substantially close to the inner peripheral surface 3 a of the cylindrical body 3.

The gear-shaped member 5 is made of resin and has substantially the same gear shape as the pressure-contact blade 4. However, the side surface of each tooth 9 of the gear-shaped body 5 is not formed in a blade shape.
The gear-shaped body 5 is disposed on one end side of the cylindrical body 3, and each tip of the plurality of teeth 9 is substantially close to the inner peripheral surface 3 a of the cylindrical body 3.

The cylindrical body 3 has a cylindrical shape as a basic shape,
It is configured to be rotatable relative to the internal container 2. At one location on the inner peripheral surface 3a of the cylindrical body 3, a convex groove 10 protruding outward is provided. An electric wire insertion hole 11 is formed by the convex groove 10 and the press contact groove 8 at a position where the convex groove 10 and the press contact groove 8 of the press contact blade body 3 coincide with each other. The diameter of the wire insertion hole 11 is larger than the diameter of the wire W described below. Also, at each location where the convex groove 10 and the press contact groove 8 do not match, the inner peripheral surface 3a of the cylindrical body 3 and the press contact groove 8
Thus, the wire pressure contact hole 12 is formed. The wire pressure contact hole 12 has a diameter smaller than the diameter of the wire W described below, specifically, a diameter slightly smaller than the inner core wire wa.

A substantially similar relationship is established between the cylindrical body 3 and the gear-shaped body 5, and a portion where the convex groove 10 of the cylindrical body 3 and the tooth portion 9 of the gear-shaped body 5 coincide with each other is an electric wire. It is configured as an insertion slot (especially, without reference numeral).

Further, a wall portion 13 is provided on the other end side of the cylindrical body 3, that is, on the opposite side where the gear-shaped body 5 is arranged, so that the tip of the inserted electric wire W is not pulled out to the outside. It has become.

Each of the electric wires W is composed of a core wire wa and an insulating sheath wb covering the core wire wa, as in the conventional example.

Next, the operation of the above configuration will be described. The jig 20 is inserted into the jig engaging hole 6 a of the support shaft 6, and the electric wire W is inserted from an electric wire insertion opening (particularly without a reference numeral) between the cylindrical body 3 and the gear-shaped body 5. Then, as shown in FIG. 1B, the distal end of the electric wire W passes through the electric wire insertion hole 11 between the cylindrical body 3 and the press-contact blade body 4 and is inserted to a position where it comes into contact with the wall portion 13. Next, the inner container 2 is fixed by the jig 20 so as not to rotate, and the cylindrical body 3 is rotated, for example, counterclockwise to a position where the position of the convex groove 10 coincides with the adjacent pressure contact groove 8. Then, due to this rotation, the space into which the electric wire W is inserted gradually changes into the small-diameter electric wire pressure contact hole 12, and the insulating sheath wb of the electric wire W is broken by the teeth 9 and the core wire wa and the press contact blade body 4.
Are brought into a pressure contact state, whereby the electric wire W and the pressure contact blade body 4 are electrically conducted.

The rotation of the cylindrical body 3 causes the convex groove 10 of the cylindrical body 3 to move to the position of the adjacent pressure contact groove 8 as shown in FIG. 2, and a new wire insertion hole 11 is formed at this position. Is done. The electric wire W can be connected to the new electric wire insertion hole 11 by performing the insertion operation of the electric wire W and the rotating operation of the cylindrical body 3 in the same manner as described above. The electric wire W can be electrically connected.

Therefore, similarly to the above-mentioned conventional example, the connection of the electric wire W is performed without any terminal treatment such as peeling or terminal punching, and
Can be done without large tools. Further, the connection of each electric wire W can be performed at any time. Further, since the connection can be made by the number of the tooth portions 7 (the number of the press-contact grooves 8), 1
It is not intended for one-to-one electrical connection, but is suitable for connection of a large number of electric wires W.

In the first embodiment, since the distal end of the electric wire W inserted into the cylindrical body 3 cannot be pulled out from the cylindrical body 3, the end of the electric wire W becomes an electrical connection point, and is suitable for a terminal joint. ing.

FIG. 3 is a perspective view of a press-fit joint connector 1 according to a second embodiment of the present invention. In FIG. 3, the second embodiment is compared with the first embodiment. In the first embodiment, the wall 13 is provided on the other end side of the cylindrical body 3. Is different in that the wall portion 13 is not provided and the electric wire outlet 14 is formed. Since other configurations are the same, the same reference numerals are given to the drawings and the description is omitted.

The second embodiment has the same functions and effects as those of the first embodiment. Further, unlike the first embodiment, the distal end side of the electric wire W inserted from the electric wire insertion opening (particularly without a reference numeral) of the cylindrical body 3 and the gear-shaped body 5 is, as shown in FIG. It can be pulled out from the wire outlet 14 of the cylinder 3. Therefore, an arbitrary intermediate portion of the electric wire W can be used as an electrical connection portion, and is suitable for an intermediate wire joint. Further, the distal end side of the inserted electric wire W is
If it is set at a position where it is not pulled out from the other end side, the end of the electric wire W can be used as an electrical connection point, and can also be used as a terminal joint.

According to each of the above-described embodiments, the pressing blade 4
Although the case where the number of the teeth 7 is eight is shown, the number of teeth of the teeth 7 is not limited to this and can be set to two or more.
The number of teeth of the tooth portion 7 may be set to a maximum necessary number according to the purpose of use of the press-connecting connector 1 and the like.

[0038]

As described above, according to the first aspect of the present invention, a pressing blade having a plurality of teeth and having a pressing groove formed between adjacent teeth is provided. A cylindrical body accommodating the press-contact blade body therein, and having a convex groove protruding outward in a part of the inner peripheral surface, and configured to be rotatable relative to the press-contact blade body. A wire insertion hole is formed at a position where the convex groove of the cylindrical body and the press-contact groove of the press-contact blade body coincide with each other, and the convex groove of the cylindrical body and the press-contact groove of the press-contact blade body are provided. Wire crimping holes are configured at each of the locations that do not match, so insert the wire into the wire insertion hole, and rotate the cylinder to the position where the position of the convex groove matches the adjacent crimping groove with respect to the crimping blade Then, this rotation changes the space where the wire is inserted into a wire pressure welding hole, and the insulation sheath of the wire is broken by the pressure welding blade. Since the electric wire and the press-connecting blade are electrically connected to each other, and the rotation of the tube moves the convex groove of the tube to the position of the adjacent press-contact groove, an electric wire insertion hole is formed at this position. The connection process of the electric wires can be performed as needed, and the configuration is suitable for connecting a large number of electric wires.

According to the second aspect of the present invention, in the press-fitting joint connector according to the first aspect, since the cylindrical body has a wall for preventing the inserted wire from being pulled out to the outside with respect to the distal end thereof. In addition to the effects of the first aspect of the present invention, since the distal end side of the electric wire inserted into the cylindrical body cannot be pulled out from the cylindrical body, the end of the electric wire serves as an electrical connection point and is suitable for a terminal joint.

According to a third aspect of the present invention, in the press-fitting joint connector according to the first aspect, the cylindrical body has an electric wire outlet for drawing out a distal end side of the inserted electric wire to the outside. In addition to the effects of the first aspect of the present invention, the middle part of the electric wire can be used as an electrical connection part by pulling out the distal end side of the electric wire inserted into the cylindrical body from the electric wire outlet, so that it is suitable for a mid-wire joint.

[Brief description of the drawings]

FIG. 1A is a perspective view of a press-fitting joint connector according to a first embodiment of the present invention, and FIG. 1B is a sectional view taken along line AA of FIG.
It is a line sectional view.

FIG. 2 is a cross-sectional view of the press-fit joint connector showing a wire press-contact state according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a press-fit joint connector according to a second embodiment of the present invention.

FIG. 4 is an exploded perspective view of a conventional press-fit joint connector.

FIG. 5 is a perspective view of a conventional press-fit joint connector.

FIGS. 6A and 6B are front views of a rotary pressure contact terminal according to a conventional example.

FIG. 7 is an exploded perspective view of another conventional pressure welding joint connector.

FIG. 8 is a perspective view of another conventional pressure joint connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Press-fitting joint connector 3 Cylindrical body 3a Inner peripheral surface 4 Press-fitting blade body 7 Teeth 8 Press-fitting groove 10 Convex groove 11 Wire insertion hole 12 Wire press-fitting hole 13 Wall portion 14 Wire outlet

Claims (3)

[Claims] 1. A press-contact blade having a plurality of teeth spaced apart in an outer peripheral direction, and a press-contact groove formed between adjacent teeth, and the press-contact blade being internally provided. A cylindrical body that accommodates, and has a convex groove protruding outward in a part of the inner peripheral surface, and that is configured to be rotatable relative to the press-contact blade body; At a position where the convex groove and the pressure contact groove of the pressure contact blade body coincide with each other, the electric wire W is formed by the convex groove and the pressure contact groove.
An electric wire insertion hole having a diameter at least larger than the diameter of the cylindrical body is formed, and at each position where the convex groove of the cylindrical body does not coincide with the press-contact groove of the press-contact blade body, the inner peripheral surface of the cylindrical body and the press-contact A press-fit joint connector, wherein a wire press-contact hole smaller than the diameter of the wire W is formed by the groove. 2. The pressure-welding joint connector according to claim 1, wherein the tubular body has a wall portion that prevents the inserted wire W from being pulled out to the outside. connector. 3. The pressure-welding joint connector according to claim 1, wherein the tubular body has a wire outlet for drawing out a distal end side of the inserted wire W to the outside.