JPH0750828Y2 - Electrical junction box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to improvements in electrical junction boxes such as fuse boxes, relay boxes and branch junction boxes.

[Prior Art] Conventionally, an electric connection box of this type as shown in FIG. 6 has been proposed (Japanese Utility Model Publication No. 63-30121).

That is, a is a case, and a plurality of insulated coated electric wires b constituting the wire harness W are drawn into the case and arranged in parallel.

A branch bar c has at least two terminals d with slots.

This branch bar c is made orthogonal to the insulating coated electric wire b group, and its slot e is press-fitted and connected to the electric wire b.

Then, by appropriately setting the number and positions of the slotted terminals d, desired insulation-coated electric wires b arranged in parallel are short-circuited to form a branch circuit in the case, and a branch portion from the electric junction box A is formed. It aims at simplifying the wiring form of the wire harness by wiring with parallel electric wires without a wire.

A terminal f is connected to the end of the insulation-covered electric wire b, and a connector g is formed so as to be exposed from the case a so that it can be connected to an electric component such as a fuse or a relay (not shown).

[Problems to be solved by the device]

The electric connection box A directly attached to the wire harness W as shown in FIG. 6 is usually assembled and manufactured by a harness manufacturer at the same time when the harness is manufactured.

However, it is rare for a car maker to just assemble the above electrical junction box A to the vehicle body. In order to connect in-vehicle electrical components and the like, another wire harness, which usually comes from another direction, must be connected to the box A.

Therefore, as shown in the wiring diagram of FIG. 7, the actual electrical junction box A'includes, in addition to the group of insulation-coated electric wires b drawn into the case a, another electric wire internally branched and connected by a branch bar c. It is necessary to pull out the b'group from the box A'to the outside, and attach the harness connecting connector h to the end portion.

However, in such a connection structure, the number of connecting electric wires is increased (insulation-covered electric wire b'group), the electric connection box is increased in size, and the cost is increased.

An object of the present invention is to solve the above problems, to provide an electric connection box that can reduce the number of connecting electric wires, reduce the size of the electric connection box, and reduce the cost.

[Means for Solving the Problems]

In order to achieve the above object, in the present invention, a plurality of electric wires drawn from a wire harness are arranged in parallel in a case, and a branch bar having at least one electric wire pressure contact portion intersects the electric wires. In the electrical connection box, the slots of the electric wire press-contact portion are press-fitted into the electric wire, and the desired electric wires are branched and connected by appropriately setting the number and positions of the electric wire press-contact portions of the branch bar. An external connection terminal is formed on at least one end of the branch bar, and the external connection terminal is exposed from the case to form a connection connector for another wire harness.

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

〔Example〕

In FIG. 1, reference numeral 1 denotes a box-shaped case of the electric junction box B. The case 1 comprises a front cover 1A and a back cover 1B, and both covers 1 are openably and closably fitted by locking means (not shown).

The case 1 has a plurality of fuse cavities 2 and relay cavities 3 on the upper side wall, and a connector housing 4 is formed on one end wall (right side in the figure).

An insulating substrate 5 is housed in the case 1, and a plurality of branch bars 6 are arranged and fixed in parallel to the lateral direction on both front and back surfaces of the plate 5. For fixing, a method of pressing into a groove (not shown) provided in the insulating substrate 5 is adopted, but a method such as an adhesive or ultrasonic welding may be used.

The branch bar 6 has a tab-shaped external connection terminal 7 at one end and an electric wire pressure contact portion 8 at the other end or in the middle, as shown in an enlarged view in FIG. The wire pressure contact portion 8 has a slot 8b on a standing piece 8a that is erected from both sides (or one side) of the branch bar 6.
Is provided. The number of the wire pressure contact portions 8 is not limited to two, but one or three or more can be provided, and the positions thereof can be set appropriately.

The external connection terminal 7 at one end of the branch bar 6 is housed so as to project into the insulating connector housing 4 to form a connector (4) for connecting to the connector 11 at the end of the wire harness W '.

In addition, the insulation-coated electric wire 9 is provided in the slot 8b of the electric wire pressure contact portion 8.
Is press-fitted and connected. That is, the wire harness W
A plurality of electric wires 9 drawn out from the electric wire 9 are arranged in parallel in the case 1 so as to intersect the branch bar 6 in a vertical direction, and the female terminal (or male terminal) 10 crimp-connected to the tip thereof is the fuse cavity 2 or It is housed in the relay cavity 3, and the middle portion is press-fitted and connected to the slot 8b of the branch bar 6.

(Operation) FIG. 3 is an example of a wiring diagram of the electrical junction box B of FIG. 1, in which F represents a fuse and R represents a relay.

As is apparent from FIG. 3, the electric wires 9 of the wire harness W arranged in the case 1 of the electric junction box B are short-circuited (joint) at appropriate points by the branch bar 6 to form a branch circuit. Has been done.

Then, a group of tab-shaped external connection terminals 7 formed at one end of each branch bar 6 is accommodated in the connector housing 4,
Wire harness W'from another direction (see Fig. 1)
To form a connector (4) to.

Comparing FIG. 3 with FIG. 7 showing a conventional example, a large number of electric wires (b ′) can be omitted by forming the terminal 7 for external connection on the branch bar 6 according to the present invention, and the electric connection box can be omitted. It can be seen that the simplification of the internal structure is achieved at the same time as the miniaturization of.

[Other Examples]

The electric junction box C shown in FIG. 4 is obtained by replacing the branch bar 6 and the electric wire 9 in FIG.

That is, the electric wire 9 pulled out from the wire harness W
The group is arranged in parallel with the insulating substrate 5 in the case 1, and a part of the group of electric wires 9'is passed through the case 1 as it is and led out to the outside, and a connector 4'is provided at the end thereof. It is a thing.

In this case, the branch bar 6'can be formed by forming a tab-shaped terminal 7'for connecting an electric component at one end and providing a pair of wire pressure contact portions 8 at the other end. The terminal 7'is a female-female relay terminal.
Electrical components such as fuses and relays (not shown) are connected via 12.

In this electric connection box C, a part of the electric wire 9 group (electric wire 9'group) constituting the wire harness W is used as it is for connecting to another wire harness W '(see FIG. 1), and the same saving as described above is performed. Linearization is achieved.

An electric junction box D shown in FIG. 5 shows an improved example of the electric junction box C, and an electric wire 9 ′ led out from the electric junction box C to the outside.
The group was abolished.

That is, the branch bar 6 ″ vertically arranged and fixed to the insulating substrate 5 has tab-shaped terminals 7 ″ at both ends and one wire pressure contact portion 8 in the middle.

The female-male relay terminal 12 is fitted into one of the terminals 7 "at both ends, and the other terminal 7" is housed so as to project into a connector housing 4 formed on the lower side wall of the case 1.

As a result, it is possible to eliminate the connector 4'which is suspended from the case 1 and protrudes from the case 1 like the electric junction box C shown in FIG.

[Effect of device]

As described above, according to the present invention, in the electric connection box directly attached to the wire harness, the cost can be reduced by reducing the number of connecting electric wires, downsizing the electric connection box, and simplifying the internal structure. it can.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of an electrical junction box showing an embodiment of the present invention, FIG. 2 is an enlarged perspective view of a branch bar of FIG. 1, and FIG. 3 is a circuit of the electrical junction box of FIG. A wiring diagram showing an example of the configuration, FIGS. 4 and 5 are partially cutaway perspective views of an electric connection box showing another embodiment of the present invention, and FIG. 6 is a main part showing a conventional electric connection box. A perspective view and FIG. 7 are wiring diagrams showing an example of the same circuit configuration. B, C, D …… electrical junction box, W, W ′ …… wire harness, 1
...... Case, 4, 4 '... Connector (housing), 5 ...
… Insulating board, 6,6 ′, 6 ″ …… Branching bar, 7,7 ′, 7 ″ …… Tab-shaped external connection terminal, 8 …… Wire crimping part, 8b …… Slot, 9 …… (insulation Coating) electric wire.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography SHO 56-31471 (JP, U) RIE 63-113423 (JP, U) ACT 61-161880 (JP, U)

Claims (3)

[Scope of utility model registration request] 1. A plurality of electric wires drawn out from a wire harness are arranged in parallel in a case, and a branch bar having at least one electric wire pressure contact portion is arranged crossing the electric wire, and the electric wire pressure contact portion is provided. At least one end of the branch bar in an electric connection box in which desired electric wires are branched and connected by press-fitting and connecting the slot of the electric wire to the electric wire and appropriately setting the number and positions of the electric wire press contact portions formed on the branch bar. An external connection terminal is formed in the external connection terminal, and the external connection terminal is exposed from the case so that the external connection terminal can be connected to a connection connector of another wire harness. 2. A plurality of electric wires drawn from a wire harness are arranged in parallel in a case, and a branch bar having at least one electric wire pressure contact portion is arranged so as to intersect with the electric wire, and the electric wire pressure contact portion is provided. At least one end of the branch bar in an electric connection box in which desired electric wires are branched and connected by press-fitting and connecting the slot of the electric wire to the electric wire and appropriately setting the number and positions of the electric wire press contact portions formed on the branch bar. An electric connection box characterized in that an external connection terminal is formed on a part of the plurality of electric wires, and a part of the plurality of electric wires is led out from the case, and the lead-out end can be connected to another wire harness connecting connector. . 3. The electrical junction box according to claim 2, wherein terminals for connecting electronic parts such as fuses and relays are formed at one end of the branch bar, and terminals for external connection are formed at the other end as necessary.