JPH03239108A - Multipoint connector and branch connector - Google Patents

Abstract

PURPOSE:To prevent pressure-welded terminals from coming off and being pressure-welded incompletely by fitting terminal fixation rods in through holes in an insulating case to pass the terminal fixation rods through terminal fixation holes in the pressure welded terminals. CONSTITUTION:A plurality of electric wire insertion holes 3 and through holes 4 are made in the lower and upper parts of an insulating case 2 respectively. A plurality of connector fitting sections 51, 52, and 53 are made vertically on the upper face 2b and a plurality of terminal fitting holes 6 are made vertically piercingly across the electric wire insertion holes 3 and through holes 4. In assembling, the electric contacts 8 of pressure-welded terminals 7 are fitted in the terminal fitting holes 6 and terminal fixation holes 11 are made to correspond to the electric wire insertion holes 3. Electric wires 1 are inserted, the pressure welded terminals 7 are pushed in, and the electric wires 1 are connected to the slots 10 by press-fitting. Terminal fixation rods 12 are inserted into the through holes 4. Linkage rods 14 to connect the terminal fixation rods 12 are locked to the insulating case 2 by fitting locking claws 16 in locking holes 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a branch connector and a branch connector using electric wires as constituent members of a wiring pattern.

[Conventional technology]

Conventionally, as a branch connector of this type, there is a branch junction box as shown in FIG. 7 (Japanese Utility Model Application No. 61-36965).

In the figure, a is an upper case, b is a lower case, and wire storage ac is provided on the inner surface of both cases, and a group of connecting wires d pulled out from the wire harness W are connected in parallel between both cases through the groove C. Contain and clamp.

Reference numeral e designates a pressure contact terminal, which has one or more layered contact portions f on the negative side and a pressure contact portion g with a U-shaped slot 7) h cut thereon on the other side.

The layered contact part f of this press-contact terminal e is protruded from the upper surface of the upper case a, and the other connecting wire 62 of the wire harness W is
An insertion portion j for the connector 1 of the group is formed. In addition, pressure contact part g
protrudes from the back side of the upper case a, and the clamped electric wire d1 is press-fitted therein.

As a result, the wires d, d are drawn out via the pressure contact terminal e.
The two groups are interconnected and a branch circuit is centrally formed.

Other branch junction boxes include those that use flat wires for the above-mentioned connection wire group (Japanese Utility Model Application Publication No. 61161881), and those that connect pressure contact terminal connectors directly to the wires sandwiched between both cases (Japanese Utility Model Application Publication No. 61161881). 62-197507), etc.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, the case is divided into upper and lower parts, which requires a large number of separate parts, and the number of assembly steps increases accordingly, resulting in high costs.

In addition, when manufacturing branch junction boxes, the process of clamping the electric wires in parallel and the process of inserting the pressure contact terminals are separate processes, which lengthens the lead time for parts procurement and requires many process transfers for semi-finished products. Problems arise such as it becomes difficult to protect the terminal portion between them.

Furthermore, it is difficult to hold and position the wire when the pressure contact terminal and the wire are pressed together.

The present invention has been made with attention to the above-mentioned points, and it reduces the number of parts and the assembly process, makes it easy to hold and position electric wires during pressure welding connections, and ensures protection of terminals during process movement. An object of the present invention is to provide a branch connector and a branch connector.

[Means to solve the problem]

In order to achieve the above object, the branch connector of the present invention has a plurality of wire insertion holes or wire placement grooves arranged in parallel, as described in claim (11), and a plurality of wire insertion holes or wire placement grooves. an insulating case with a terminal accommodating hole provided perpendicularly to the terminal accommodating hole, and a crimping terminal inserted into the terminal accommodating hole, which has an electric wire crimping part that forms an electrical contact part for a mating terminal on one side and has a slot on the other side. A branch connector is provided with a formed pressure contact terminal and a wire wired through a wire insertion hole or a wire placement groove is press-fitted into a slot of the pressure contact terminal, and the pressure contact terminal is provided with a terminal locking hole, and the pressure contact terminal is provided with a terminal locking hole. A through hole communicating with the terminal locking hole is provided in the insulating case, and a terminal locking rod is inserted into the through hole to penetrate the terminal lock 7L, thereby preventing the pressure contact terminal from coming off and incomplete pressure contact. It is characterized by

This branch connector can be used as a normal branch junction box by providing a connector insertion part on the outer surface of the insulating case and accommodating and arranging the electrical contact parts of the pressure contact terminals (Claim (2)
)).

The terminal hole can be provided separately from the slot or continuously (Claim (3)), and when provided continuously,
As in claims (41 and 51), either a closed body or an open body may be adopted.

It is convenient for the terminal locking rod to be formed as a chain rod as described in claim (6).

By providing a wire holding groove corresponding to a group of electric wires on one side of the frame member of the chain rod, it can be used as a holding member for electric wires.

Further, the branch connector of the present invention includes a joint terminal in which a plurality of slots of a conductive metal plate are arranged in parallel and a terminal locking hole is provided at the lower end of the slot, and a rectangular parallelepiped or cubic shape. This connector body has a terminal insertion groove recessed in the upper surface thereof, a plurality of terminal insertion holes in the upper row of both opposing sides, and a plurality of through holes in the lower row with the same bevel as the slot. The connector cover has a rectangular cross-section with a connector main body and a side plate hanging down on one side of the top plate, and the side plate has a long wire lead-out groove,
It consists of a connector cover with a plurality of terminal locking rods protruding from the flesh surface of the side plate in a comb-teeth shape, and the wire insertion hole is inserted into the terminal insertion groove of the connector body and the terminal locking hole of the joint terminal is inserted into the terminal insertion groove of the connector body. inserting an electric wire through the slot, pressing the joint l terminal downward to press fit the electric wire into the slot, and inserting a terminal locking rod of the connector cover through the through hole to penetrate the terminal locking hole; It is characterized by being able to prevent the joint terminal from coming off and from being incompletely pressed.

[For production]

The branch connector or branch connector according to the present invention requires only one insulating case (or connector body) to accommodate and press-contact the electric wire and the pressure contact terminal (or joint terminal), and the number of parts can be reduced.

By continuously forming slots and terminal locking holes,
After temporarily inserting the pressure contact terminal (or joint terminal) into the insulation case (or connector body), pass the wire through the terminal locking hole that is continuous with the slot, and press the pressure contact terminal (or joint terminal). By doing so, a plurality of electric wires can be press-fitted into the slot at once, which simplifies the process.

After pressure welding is completed, by inserting the terminal locking rod through the through hole of the insulating case (or the connector body) and passing it through each terminal locking hole, the terminals are prevented from coming off and loose, and incomplete pressure welding is also prevented. You can get a product with a highly reliable connection.

Hereinafter, the above configuration and operation will be specifically explained with reference to drawings showing embodiments.

〔Example〕

In FIGS. 1 and 2, A is a branch junction box,
A plurality of insulated wires l, an insulating case 2 that accommodates them
, a pressure contact terminal 7 and a terminal locking rod 12.

The insulating case 2 made of synthetic resin is an upright body, with left and right end walls';! Between a and 2a', a plurality of wire insertion holes 3 are provided in the lower stage, and a plurality of through holes 4 are provided in the upper stage in parallel. Further, on the top surface 2b, a plurality of connector insertion portions 58,
5□, 53 are arranged upright, and in each insertion part, a plurality of terminal receiving holes 6 cross the wire insertion hole 3 and the through hole 4,
Upper and lower surfaces 2b.

2b'.

The pressure contact terminal 7 is formed by punching a conductive metal plate, and -
For example, it has an electric contact part 8 with respect to a mating terminal, and a pressure contact part 9 with a slot 10 on the other side.
A terminal locking hole 11 is continuously provided at one end of the terminal 0, that is, on the side of the electrical contact portion 8.

The slot 1O and the terminal locking hole 11 are shaped as a keyhole-shaped closure, and the diameter of the hole 11 is set to a size that allows the electric wire 1 to be inserted easily.

The terminal locking rod 12 is in the form of a chain rod 14 protruding from a frame member 13 having a U-shaped cross section in a comb-teeth shape.
A lock hole 15 and a lock pawl 16, which constitute locking means, are provided between the lower holding plate 13a and the insulating case 2, respectively. Furthermore, a wire holding guide I7 is provided in the lower holding plate 13a in correspondence with the wire insertion hole 3.

The length of the terminal locking rod 12 is the same as that of the insulating case 2, so that it can reach from one end wall 2a to the other end wall 2a', or it can be inserted from both left and right end walls as shown in the figure. It may be short and formal. The terminal locking rod 12 and the frame member 13 may both be made of synthetic resin, or in particular, the terminal locking rod 12 may be made of metal such as aluminum or iron.
The point is that the insulation of the terminal locking rod 12 between each terminal is maintained.

Next, assembly of the branch junction box A will be explained.

First, as shown in FIG. 2, the electrical contact part 8 of the pressure contact terminal 7 is inserted into the required terminal receiving hole 6 from the back surface 2b' side of the insulating case 2, and as shown in FIG. 3a, each terminal locking hole 11 Align it with the wire insertion hole 3 of the insulation case 2. When all the pressure contact terminals 7 have been inserted, the electric wire 1 is inserted into the wire insertion hole 3 and passed through the terminal locking hole 11 of each pressure contact terminal 7.

Therefore, as shown in Figure 3, all the pressure contact terminals 7 were pressed down at once using a pressure contact jig (not shown).
Press-fit and connect electric wire 1 to . It should be noted that each electric wire 1 is fixed at both ends during pressure welding so that an appropriate tension is maintained.

By press-welding the electric wire, the press-contact terminal 7 enters the inner part of the terminal receiving hole 6, and the terminal locking hole 11 is connected to the through-hole 4 of the insulating case 2.
reach.

Therefore, by inserting the terminal locking rod 12 into the through hole 4 as shown in FIG. 3C, the rod 12 passes through the terminal locking hole 11 and the pressure contact terminal 7 is locked. Further, the chain attachment 4 is locked to the insulating case 2 by a lock hole 15 and a lock claw 16. At this time, if necessary, the ends of each electric wire 1 are bent and led out from the wire holding groove 17 of the frame member 13, so that the electric wire 1 can be held securely.

FIG. 3d is a cross-sectional view taken along the line dd in FIG. 3C, showing the electric wire 1 in a press-contact state and the press-contact terminal 7 in a locked state.

In Figures 3 and C, the pressure of the electrode '4IAI is insufficient.
That is, unless the pressure contact terminal 7 is pushed into the terminal receiving hole 6 by a predetermined stroke, the terminal locking rod 12 cannot be inserted, which is useful for checking incomplete pressure contact. Also,
Since the slot throat 10 is designed as a closed body, there is little risk of the wires spreading during pressure welding, and stable contact pressure can be obtained.

4a"-c show a modification of the pressure contact terminal 7. FIG.

The pressure contact terminal 7A of FIG. 4a has two layered electrical contact parts 8.
In addition, a terminal locking hole 11 is provided at the end of the slot 10 opposite to the electrical contact portion 8.

The pressure contact terminal 7B shown in FIG. In addition to being able to insert it from the side,
The slot IO or the terminal locking hole 11 is formed as an open body by the passage 11a to soften the contact pressure at the wire pressure welding part.

The pressure contact terminal 7C in Fig. 4C is connected to the slot 1 as in Fig. 4a.
A rectangular terminal locking hole 11' is provided at the end of the pressure contact portion 9, and a passage 11a' is provided at the end of the pressure contact portion 9.

The arrows in FIGS. 4A to 4C each indicate the direction in which the pressure contact terminal contacts the electric wire, and the pressure contact terminal 7B can be pressure contacted from either the upper or lower direction.

FIG. 5 shows an embodiment of the branch connector.

The branch connector B consists of a connector body 18, a connector cover 25, and a chain-shaped joint terminal 29.

The connector main body 18 has a rectangular parallelepiped or cubic shape, and has flanges 18a protruding from both sides of the lower end. Two terminal insertions 121 are recessed in the upper surface 19 of the connector main body 18, and through holes 22 are provided in the lower part of both side surfaces 20 in the elongated direction.
A plurality of electric wire insertion holes 23 are provided in the upper row at equal intervals, and a lock groove 24 is provided in one side surface 20.

The connector cover 25 is attached to a side plate 25b on one side edge of the top plate 25a.
The side plate 25b has a long electric wire lead-out hole 26 and a plurality of terminal locking rods 27 protruding from the inner surface in a comb-teeth shape. In addition, the top plate 25a
A lock pawl 28 that engages with the lock groove 24 is provided on the other side edge.
is formed.

The two joint terminals are formed by a pair of opposing leg plates 30 and 30 formed by bending a conductive metal plate into a U-shape or a U-shape.
A plurality of slots and throats 31 are arranged in parallel, and a terminal locking hole 32 is provided at the lower end of each slot.

To assemble the branch connector B, insert the joint terminal 29 into the terminal insertion a21 of the connector body 18 on the leg F as shown in FIG.
Insert the i30 and connect the terminal locking hole 32 to the wire insertion hole 2.
3, with the electric wire 1 passing through the hole 23,
The joint terminal 29 is pressed downward with a jig (not shown). Figure 3a.

The electric wire 1 is pressed into the slot 31 as in case b.

Therefore, the terminal locking rod 27 is inserted into the through hole 22 as shown in FIG.
is engaged with the lock groove 24 of the connector body 18 and locked.

Thereby, a branch connector B in which a plurality of electric wires 1 are branched and connected to each other by the joint terminal 29 is obtained. Since each electric wire 1 is pressed into two slots 31, a stable electrical contact can be obtained, and the terminal 29 is locked by the terminal locking rod 27, so there is no need to worry about it coming out.

〔Effect of the invention〕

As explained above, the branch connector according to the present invention allows the electric wires forming the pattern to pass through the terminal locking holes of the pressure contact terminals that have been inserted into the terminal receiving holes of the insulating case in advance, thereby positioning the terminals and preventing them from coming off. However, all the pressure contact terminals can be pressure connected to the electric wire at once, which simplifies the assembly process.

After inserting the pressure contact terminal and wire into the insulation case, there is no need to worry about the pressure contact terminal coming out when moving to the pressure welding process.

After the electric wire is press-connected, each press-contact terminal is locked by a terminal locking rod to prevent rattling when pulled out, and a stable electrical connection state is maintained.

Furthermore, one insulating case is sufficient for housing and fixing the electric wires and press-contacting terminals, reducing the number of parts.

The above effects are the same in the case of branch connectors.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of essential parts of a branch junction box showing an embodiment of the present invention, Fig. 2 is a perspective view of the insulating case 2 and pressure contact terminal 7 of Fig. 1 seen from the back side, Fig. 3 a y d 3 is a cross-sectional view of the main parts showing the assembly and operating state of the branch junction box in FIG. 1, and FIG. 3D is a sectional view of FIG.
It is a sectional view taken along the line dd. Figure 4 a''-c are the pressure contact terminals 7 in Figure 1, respectively.
FIG. 5 is an exploded perspective view of the branch connector according to the present invention; FIGS. 6 a and b are sectional views showing the same assembly and operation state, respectively; FIG. 7 is a conventional branch connection box. FIG. A... Branch connection box, B... Branch connector, 1...
Electric wire, 2... Insulation case, 3... Wire insertion hole, 4.
...Through hole, 6...Terminal accommodation hole, 7,7A~7C...
- Pressure contact terminal, 8... Electrical contact part, 9... Pressure contact part, 1
0... Throat, 11.11'-... Terminal locking hole,
lla, lla - passage, 12... terminal locking rod, 1
3... Frame member, 14... Chain rod, 15.16...
Mouth/tsuk hole (as a mouth/tsuk means), lock claw, 17
... Wire holding groove, 18 ... Connector body, 21 ...
・Terminal insertion groove, 22... Through hole, 23... Wire insertion hole, 25... Connector cup\-126... Wire pull-out groove, 27... Terminal locking rod, 29... Joint terminal, 0... Leg plate, 1... Slot, 2... End progeny stop hole.

Claims (10)

[Claims] (1) An insulating case in which a plurality of wire insertion holes or wire placement grooves are arranged in parallel and a terminal receiving hole is provided perpendicularly to the wire insertion holes or wire placement grooves, and a terminal receiving hole is inserted into the terminal receiving hole. The pressure contact terminal is equipped with a pressure contact terminal in which an electrical contact part with a mating terminal is formed on one side and a wire pressure contact part with a slot is formed on the other side, and the pressure contact terminal is capable of pressure contacting electric wires wired through wire insertion holes or wire arrangement grooves. In a branch connector that is press-fitted into a slot of a terminal, a terminal locking hole is provided in the pressure contact terminal, a through hole communicating with the terminal locking hole is provided in the insulating case, and a terminal locking rod is installed in the through hole. A branch connector characterized in that the terminal is inserted through the terminal locking hole to prevent the pressure contact terminal from coming off and incomplete pressure contact. (2) The branch connector according to claim (1), wherein the insulating case has a connector insertion portion on its outer surface, and the electrical contact portion of the pressure contact terminal is arranged to protrude into the connector insertion portion. (3) The branch connector according to claim (1) or (2), wherein the terminal locking hole is provided continuously to the slot of the wire pressure welding portion. (4) The branch connector according to claim (3), wherein the slot and the locking hole in the wire pressure welding portion are formed as a keyhole-shaped closure. (5) The branch connector according to claim (3), wherein a part of the slot or terminal locking hole in the wire pressure welding portion is formed as an open body having a passage communicating with the outside. (6) A plurality of terminal locking rods are formed as a chain rod in which a frame member is connected in a comb-teeth shape, and a locking means is provided between the frame member and the insulating case. (5
) branch connector. (7) The branch connector according to claim (6), wherein wire holding grooves for a plurality of electric wires are arranged in parallel on one side of the frame member. (8) A joint terminal in which a plurality of slots are arranged in parallel on a conductive metal plate and a terminal locking hole is provided at the lower end of the slot;
A connector body in the shape of a rectangular parallelepiped or cube, with a terminal insertion groove recessed in its upper surface, a plurality of terminal insertion holes in the upper row of both opposing sides, and a plurality of through holes in the lower row, each of which is the same as the slot. The connector cover has an L-shaped cross section with a connector main body inserted at pitches and a side plate hanging down on one side of the top plate.The side plate has a long wire lead-out groove, and the inner surface of the side plate has a plurality of grooves. It consists of a connector cover with a terminal locking rod protruding in a comb-tooth shape, and an electric wire is inserted into the terminal locking hole of the joint terminal inserted into the terminal insertion groove of the connector body through the wire insertion hole, and the electric wire is inserted into the joint. Press the terminal downward to press-fit and connect the electric wire into the slot, and at the same time, insert the terminal locking rod of the connector cover through the through hole to pass through the terminal locking hole to prevent the joint terminal from coming off and incomplete pressure connection. A branch connector characterized in that it can be blocked. (9) The branch connector according to claim (8), wherein a locking means is provided between the connector body and the connector cover. (10) The joint terminal has a plurality of slots arranged in parallel on a pair of opposing leg plates formed by bending a conductive metal plate into a U-shape or a U-shape, and a terminal locking hole is provided at the bottom end of the slot. 10. The branch connector according to claim 8, wherein the upper surface of the connector body is provided with two terminal insertion grooves for the pair of leg plates.