JPH0797888B2 - Branch connector and branch connector - Google Patents

Description

TECHNICAL FIELD The present invention relates to a branch connector and a branch connector using an electric wire as a constituent member of a wiring pattern.

[Conventional technology]

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

In the figure, a is an upper case, b is a lower case, and an electric wire accommodating groove c is provided on the inner surface of both cases, and the connecting electric wire drawn from the wire harness W by the groove c.
d Group ₁ is housed in parallel between both cases and attached.

Reference numeral e denotes a press contact terminal, which has one or more male contact parts f on one side and a press contact part g with a U-shaped slot h cut on the other side.

The male contact part f of the press contact terminal e is projected to the upper surface of the upper case a to form the insertion part j of the connector 1 of the other connecting electric wire d ₂ group of the wire harness W. Further, the press contact portion g projects to the back side of the upper case a, and the sandwiched electric wire d ₁
Press-fit and connect.

As a result, the groups of lead wires d ₁ and d ₂ are interconnected via the pressure contact terminal e, and branch circuits are formed intensively.

As another branch connection box, a flat wire is used for the above-mentioned connecting wire group (Japanese Utility Model Laid-Open No. 61-161881), and one in which a pressure contact terminal connector is directly connected to the wire sandwiched between both cases (actually, (Kaisho 62-197507).

[Problems to be Solved by the Invention]

In the above-mentioned conventional technique, the number of separate items is large, such as the case being divided into upper and lower parts, and the number of assembling steps is accordingly increased, resulting in high cost.

Also, when manufacturing a branch junction box, the process of attaching wires in parallel and the process of inserting pressure contact terminals are separate processes, leading to a long lead time for parts procurement and many process movements for semi-finished products. During this time, problems such as difficulty in protecting the terminal portion occur.

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

The present invention has been made in view of the above points, the number of parts and the assembling process are reduced, the electric wire can be easily held and positioned at the time of press contact connection, and the terminal can be surely protected during the process movement. An object is to provide a branch connector and a branch connector.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the branch connector of the present invention has a plurality of electric wire insertion holes or electric wire arrangement grooves arranged side by side as well as an electric wire insertion hole or electric wire arrangement as described in claim (1). An insulating case having a terminal accommodating hole formed orthogonally to the groove, and a pressure contact terminal inserted in the terminal accommodating hole, the electric contact part having an electric contact portion for the mating terminal formed on one side and a slot on the other side. In a branch connector comprising a press-connecting terminal formed with, and press-connecting an electric wire wired by an electric wire insertion hole or an electric wire arranging groove into a slot of the press-connecting terminal, the press-connecting 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 locking hole so that the pressure contact terminal can be prevented from coming off and incomplete pressure contact. It is characterized by

This branch connector can be used as an ordinary branch connection box by providing a connector insertion portion on the outer surface of the insulating case and accommodating and arranging the electric contact portions of the press contact terminals (claim (2)).

The terminal locking hole can be provided separately from the slot or continuously (claim (3)).
As in claims (4) and (5), either a closed body or an open body may be adopted.

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

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

Further, as described in claim (8), the branch connector of the present invention has 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 a lower end of the slot, and a rectangular parallelepiped or a cube. The connector body is shaped like a connector, and has a terminal insertion groove formed in the upper surface thereof, and a plurality of terminal insertion holes are formed in the upper stages of the opposing side surfaces, and a plurality of through holes are formed in the lower stage at the same pitch as the slots. A connector cover having an L-shaped cross section in which a side plate is hung vertically from one side of a connector body provided on the top plate, and a long wire lead-out groove is formed in the side plate, and a plurality of terminals are locked on the inner surface of the side plate. It is composed of a connector cover with a rod protruding in a comb shape, and the electric wire is inserted through the electric wire insertion hole into the terminal locking hole of the joint terminal inserted in the terminal insertion groove of the connector body, and the joint terminal is directed downward. Press to slot The electric wire is press-fitted and connected, and the terminal locking rod of the connector cover is inserted through the through hole to penetrate the terminal locking hole so that the joint terminal can be prevented from coming off and incomplete press contact. And

[Work]

The branch connector or the branch connector according to the present invention needs only one insulating case (or connector body) for accommodating and press-connecting the electric wire and the press-connecting terminal (or the joint terminal), and the number of parts can be reduced.

By continuously forming the slot and the terminal locking hole,
After the pressure contact terminal (or joint terminal) is temporarily inserted into the insulating case (or connector body), the wire is passed through the terminal locking hole that is continuous with the slot, and the pressure contact terminal (or joint terminal) is pressed. As a result, a plurality of electric wires can be collectively press-fitted and connected to the slots, so that the process is also simplified.

After completion of the pressure welding, by inserting the terminal locking rod through the through hole of the insulating case (or connector body) and penetrating it through each terminal locking hole, the terminal dropout and rattling are prevented, and incomplete pressure welding is prevented in advance. A product with highly reliable connection can be obtained.

Hereinafter, the above configuration and operation will be specifically described with reference to the drawings showing an embodiment.

〔Example〕

In FIGS. 1 and 2, A is a branch connection box,
It is composed of a plurality of insulating covered electric wires 1, an insulating case 2 for accommodating them, a pressure contact terminal 7 and a terminal locking rod 12.

Insulation case 2 made of synthetic resin is a vertical solid, and the left and right end walls
Between 2a 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, a plurality of connector insertion portions 5 ₁ , 5 ₂ , 5 ₃ are erected on the upper surface 2b, and a plurality of terminal accommodating holes 6 cross the electric wire insertion hole 3 and the through hole 4 in each insertion portion, It is provided so as to penetrate the upper and lower surfaces 2b, 2b '.

The pressure contact terminal 7 is formed by stamping a conductive metal plate, has an electric contact portion 8 for a mating terminal on one side, and has a pressure contact portion 9 having a slot 10 opened on the other side. A terminal locking hole 11 is continuously provided on the electric contact portion 8 side. The slot 10 and the terminal locking hole 11 are formed as a keyhole-shaped closing body, and the hole diameter of the hole 11 is formed so that the electric wire 1 can be easily inserted.

The terminal locking rod 12 is formed as a chain rod 14 protruding in a comb-like shape on a frame member 13 having a U-shaped cross section, and between the upper and lower holding plates 13a of the frame member 13 and the insulating case 2. A lock hole 15 and a lock claw 16 which respectively constitute a lock means are provided. An electric wire holding groove 17 is provided in the lower holding plate 13a corresponding to the electric 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 can be inserted from both left and right end walls as shown. It may be formed short. The terminal locking rod 12 and the frame member 13
Either are made of synthetic resin, or on the other hand, especially the terminal locking rod
12 may be made of metal such as aluminum or iron, and the point is that the insulating property of the terminal locking rod 12 between each terminal is maintained.

Next, the assembly of the branch connection box A will be described.

First, as shown in FIG. 2, the electrical contact portion 8 of the press contact terminal 7 is inserted into the required terminal receiving hole 6 from the back surface 2b 'side of the insulating case 2 and each terminal locking hole 11 is inserted as shown in FIG. 3a. To the electric wire insertion hole 3 of the insulating case 2. When the press-fitting terminals 7 are completely inserted, the electric wire 1 is inserted into the wire-inserting holes 3 and the terminal engaging holes 11 of the press-connecting terminals 7 are made to penetrate therethrough.

Therefore, as shown in FIG. 3B, all the pressure contact terminals 7 are collectively pushed down using a pressure contact jig (not shown), and the electric wires 1 are press-fitted into the slots 10. It is to be noted that each wire 1 is fixed at both ends during press contact so that an appropriate tension is maintained.

The pressure contact of the electric wire causes the pressure contact terminal 7 to enter the inside of the terminal accommodating hole 6, and the terminal locking hole 11 reaches the through hole 4 of the insulating case 2.

Therefore, by inserting the terminal locking rod 12 into the through hole 4 as shown in FIG. 3C, the rod 12 penetrates the terminal locking hole 11 and the pressure contact terminal 7 is locked. Further, the chain rod 14 is locked to the insulating case 2 by the lock hole 15 and the lock claw 16.
At this time, if necessary, the end portion of each electric wire 1 may be bent and led out from the electric wire holding groove 17 of the frame member 13, so that the electric wire 1 can be reliably held.

FIG. 3d is a sectional view taken along the line dd of FIG. 3c, showing the pressure contact state of the electric wire 1 and the locked state of the pressure contact terminal 7.

In FIGS. 3B and 3C, if the pressure contact of the electric wire 1 is insufficient, that is, if the pressure contact terminal 7 is not pushed into the terminal accommodating hole 6 by a predetermined stroke, the terminal locking rod 12 cannot be inserted. Also useful for checking. Also a slot
Since 10 is formed as a closed body, there is little risk of spreading when the electric wire is pressure-welded, and a stable contact pressure can be obtained.

4A to 4C show modified examples of the pressure contact terminal 7.

The pressure contact terminal 7A shown in FIG. 4a has two male electric contact portions 8 and the terminal locking holes 11 are provided in the electric contact portions 8 of the slots 10.
It is provided at the end opposite to.

In the pressure contact terminal 7B shown in FIG. 4b, a terminal locking hole 11 is provided in an intermediate portion of the slot 10, and a passage 11a communicating with the outside is provided at one side of the hole 11, and the terminal locking rod 12 is provided in the slot 10. The slot 10 or the terminal locking hole 11 is formed as an open body by the passage 11a so that the contact pressure at the wire pressure contact portion can be softened.

The press contact terminal 7C of FIG. 4c has a slot 10 similar to that of FIG. 4a.
A square terminal locking hole 11 'is provided at the end of the
The a'is provided at the end of the press contact portion 9.

The arrows in FIGS. 4a to 4c indicate the pressure contact direction of the pressure contact terminals with respect to the electric wire, and the pressure contact terminals 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 has a connector body 18 and a connector cover 25.
And a chain-like joint terminal 29.

The connector body 18 has a rectangular parallelepiped or cubic shape,
Collar portions 18a are projectingly provided on both sides of the lower end portion. Connector body 1
Two terminal insertion grooves 21 are provided on the upper surface 19 of 8, and through holes 22 are formed on the lower side and wire insertion holes 23 are formed on the upper side on both side surfaces 20 in the longitudinal direction at equal intervals. They are laid side by side, and again
A lock groove 24 is provided on one side surface 20.

The connector cover 25 is formed to have an L-shaped cross section in which a side plate 25b is vertically provided on one side edge of the top plate 25a. A long wire drawing groove 26 is formed in the side plate 25b and a plurality of terminal locking rods 27 are formed on the inner surface. Are projected in a comb shape. A lock claw 28 that engages with the lock groove 24 is formed on the other side edge of the top plate 25a.

The joint terminal 29 includes a pair of opposing leg plates 30 and 30 formed by bending a conductive metal plate into a U-shape or a U-shape, and a plurality of slots 31 arranged side by side, and a terminal locking hole 32 at the lower end of each slot. Is provided.

To assemble the branch connector B, as shown in FIG. 6A, insert the joint terminal 29 into the terminal insertion groove 21 of the connector body 18 and the leg plate 30, and align the terminal locking hole 32 with the wire insertion hole 23. ,
With the wire 1 passing through each hole 23, the joint terminal 29
Is pressed downward with a jig (not shown). The electric wire 1 is pressed against the slot 31 as in the case of FIGS.

Therefore, in a state where the pressure-welded group of electric wires 1 is led out from the electric wire drawing groove 26 of the connector cover 25, the terminal locking rod 27 is inserted into the through hole 22 as shown in FIG. The lock groove 24 is engaged and locked.

As a result, the branch connector B in which the 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 the two slots 31, a stable electric contact can be obtained, and the terminal 29 is locked by the terminal locking rod 27 so that there is no fear of coming out.

〔The invention's effect〕

As described above, in the branch connector according to the present invention, the electric wire forming the pattern is penetrated through the terminal locking hole of the pressure contact terminal previously inserted in the terminal accommodation hole of the insulating case, and the terminal is positioned and prevented from coming off. However, all the pressure contact terminals can be collectively pressure-bonded to the electric wire, which simplifies the assembly process.
There is no risk of the press-connecting terminal coming out when moving to the press-connecting process after inserting the press-connecting terminal and the electric wire into the insulating case.

Then, after the electric wires are pressure-welded, the respective pressure-contact terminals are locked by the terminal locking rods to prevent extraction and rattling, and a stable electrical connection state is maintained.

Further, only one insulating case is required for housing and fixing the electric wire and the pressure contact terminal, and the number of parts is reduced.

The above effects are the same in the case of a branch connector.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part of a branch connection box showing an embodiment of the present invention, FIG. 2 is a perspective view of the insulation case 2 and the pressure contact terminal 7 shown in FIG. 1 from the back side, and FIGS. FIG. 3 is a sectional view of an essential part showing an assembled and operating state of the branch connection box of FIG. 1, and FIG. 3d is a d of FIG. 3c.
It is a d-line sectional view. 4a to 4c are perspective views showing modified examples of the pressure contact terminal 7 in FIG. 1, FIG. 5 is an exploded perspective view of a branch connector according to the present invention, and FIGS. Sectional drawing which shows a state, FIG. 7 is explanatory drawing of the conventional branch connection box. A: branch junction box, B: branch connector, 1 ... electric wire,
2 ... Insulation case, 3 ... Wire insertion hole, 4 ... Through hole,
6 ... Terminal accommodating hole, 7,7A to 7C ... Pressure contact terminal, 8 ... Electrical contact part, 9 ... Pressure contact part, 10 ... Slot, 11,11 '...
Terminal locking hole, 11a, 11a '... passage, 12 ... terminal locking rod, 1
3 …… Frame member, 14 …… Chain rod, 15,16 …… Lock hole, lock claw (as locking means), 17 …… Wire holding groove, 18…
… Connector body, 21 …… Terminal insertion groove, 22 …… Through hole, 23
...... Wire insertion hole, 25 ...... Connector cover, 26 ...... Wire drawing groove, 27 ...... Terminal locking rod, 29 ...... Joint terminal, 30 ...
… Leg plate, 31 …… Slot, 32 …… Terminal locking hole.

Claims (10)

[Claims] 1. An insulating case in which a plurality of electric wire insertion holes or electric wire installation grooves are provided in parallel, and a terminal accommodation hole is provided orthogonally to the electric wire insertion holes or electric wire installation grooves, and is inserted into the terminal accommodation hole. And a pressure contact terminal in which an electric contact portion is formed on one side with respect to the mating terminal and an electric wire pressure contact portion having a slot is formed on the other side. In a branch connector formed by press-fitting and connecting to a slot of a pressure contact terminal, the pressure contact terminal is provided with a terminal locking hole, and the insulating case is provided with a through hole communicating with the terminal locking hole. A branch connector in which a stopper rod is inserted to penetrate a terminal locking hole so as 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 the outer surface thereof, and the electric contact portion of the pressure contact terminal projects and is housed in the connector insertion portion. 3. The branch connector according to claim 1, wherein the terminal locking hole is continuously provided in the slot of the wire pressure contact portion. 4. The branch connector according to claim 3, wherein the slot and the locking hole in the wire pressure contact portion are formed as a keyhole-shaped closing body. 5. The branch connector according to claim 3, wherein a part of the slot or the terminal locking hole in the wire pressure contact 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 connected to a frame member in a comb-teeth shape, and a locking means is provided between the frame member and the insulating case. ) To (5). 7. The branch connector according to claim 6, wherein wire holding grooves for a plurality of wires are provided 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 a lower end of the slot, and a rectangular parallelepiped or cube-shaped connector main body,
A terminal insertion groove is provided on the upper surface of the connector body, and a plurality of terminal insertion holes are formed on the upper stages of the opposite side surfaces, and a plurality of through holes are formed on the lower stage at the same pitch as the slot.
A connector cover having an L-shaped cross section in which a side plate is vertically provided on one side of a top plate. A long wire lead-out groove is formed in the side plate, and a plurality of terminal locking rods are formed in a comb shape on the inner surface of the side plate. It consists of a protruding connector cover, and inserts an electric wire through the electric wire insertion hole into the terminal locking hole of the joint terminal inserted in the terminal insertion groove of the connector body, and presses the joint terminal downward into the slot. The electric wire is press-fitted and connected, and the terminal locking rod of the connector cover is inserted through the through hole to penetrate the terminal locking hole so that the joint terminal can be prevented from coming off and incomplete press contact. And a branch connector. 9. A branch connector according to claim 8, wherein a locking means is provided between the connector body and the connector cover. 10. A joint terminal is provided with a pair of opposing leg plates formed by bending a conductive metal plate into a U-shape or a U-shape, and a plurality of slots are provided in parallel, and a terminal locking hole is provided at a lower end of the slot. The branch connector according to claim 8 or 9, wherein the connector body is provided with two terminal insertion grooves on the upper surface of the connector body for the pair of leg plates.