JPH0884422A - Electric connection box and method for assembling elelctric connection box - Google Patents

Abstract

PURPOSE: To form the internal circuit of an electric connection box with an electric wire and a pressure-welded terminal. CONSTITUTION: The box is provided with wiring grooves 13A and 13B inside an upper case 10 and a lower case 11 and where an electric wire is inserted and retained at least on one surface, and is provided with an insulation plate 12 where a pressure-welded terminal drive part 26 with a wide groove is provided at a required part of the wiring groove. Then, a thin electric wire 14 and a heavy electric wire 15 are inserted and retained at the wiring groove, electric wire pressure-welded parts 16a and 17a are provided at one edge side, and pressure-welded terminals 16 and 17 with the output/input terminal parts 16b and 17b at the other edge side are struck against the pressure-welded terminal striking part for the electric wire which is inserted into and retained at the wiring groove of the insulation plate and at the same time the output/input terminal part is projected from a tarminal hole provided on the outer wall of the case and is connected to an external circuit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connection box for an automobile and a method for assembling the electric connection box.
In an electrical junction box in which electrical circuits including a large number of fuses, relays, etc. are centrally arranged to rationally perform branch connection of a wire harness, the internal circuit is mainly composed of electrical wires and pressure contact terminals. It is intended to simplify and surely perform the wiring, and to simplify and downsize the entire structure of the electric junction box.

[0002]

2. Description of the Related Art Conventionally, in an electric junction box for an automobile, a bus bar formed by punching a conductive metal plate is used as an internal circuit. However, in order to easily cope with a design change of the internal circuit, There is provided a part of a circuit that uses an electric wire and a pressure contact terminal for pressure contacting the electric wire.

When an internal circuit composed of the above-mentioned electric wires and pressure contact terminals is used as a part of the internal circuit, pressure contact terminals are attached to the upper case and / or the lower case of the electric connection box, and the pressure contact attached to the upper case and the lower case is applied. The wire is press-fitted and connected to the terminal.
(Japanese Utility Model Laid-Open No. 3-120627, Japanese Patent Laid-Open No. 6-9682)
No. 0 gazette, Sankaihei 1-164419 gazette, etc.)

Further, as disclosed in Japanese Utility Model Laid-Open No. 1-166419, when both a circuit composed of electric wires and pressure contact terminals and a circuit composed of bus bars are used as the internal circuit of the electric junction box, FIG. As shown in Fig. 5, the power supply side circuit connected to the battery requires a conductive material for a large current, while the load side circuit branch-connected to the power supply side circuit may use a conductive material for a small current and the circuit can be changed. Since there are many, the bus bar 1 is mainly used for the circuit connected to the power source, and the electric wire 2 and the pressure contact terminal 3 are mainly used for the circuit connected to the load side.
The bus bar 1 and the electric wire 2 are connected by a fuse 4.

When the above-mentioned electric wire and pressure contact terminal are used as an internal circuit of an electric connection box, the electric wire needs to be laid on the inner surfaces of the upper case and the lower case, but the pressure contact terminal is first driven into the case side. As a result, the pressure contact terminal interferes and it is not easy to lay the wire. Further, since the case has the peripheral wall, there is a problem that the wiring head interferes with the peripheral wall and the wiring space is limited.

For this reason, conventionally, the wiring die 5 shown in FIG. 18 has been used. The wiring die 5 has a groove 6 along the wiring pattern of the electric wire, and the electric wire 2 is inserted into the groove 6 while being fed by a head roller 8 from an electric wire feeder 7. After laying the electric wire 2 on the wiring die 5, the case (upper case, lower case) to which the pressure contact terminal is attached in advance is set in the die 5, and the electric wire 2 is pressure-contacted by the pressure contact terminal, and then the die. The push pin is projected from the bottom surface, and the case in which the pressure contact terminal and the electric wire are attached is pushed out from the wiring die.

[0007]

As described above, when a part of the internal circuit of the electric junction box is formed by the electric wire and the pressure contact terminal, a wiring die is required, and the wiring pattern is different depending on the difference. It becomes necessary to prepare many wiring dies. Also, a transfer process is required to connect the electric wire laid on the mold with the pressure contact terminal attached to the case.
There is a problem in that the cost and the number of work steps increase.

Further, as described in Japanese Utility Model Laid-Open No. 3-120627, when the pressure contact of the electric wire to the pressure contact terminal previously attached to the case and the assembling of the cases are simultaneously performed,
There is a problem that the quality of the pressure contact state between the wire and the pressure contact terminal cannot be confirmed.

Further, like the electric connection box described in Japanese Utility Model Laid-Open No. 1-166419, the power supply side circuit on the upstream side is constituted by a bus bar, and the load side circuit on the downstream side is provided with pressure contact terminals in the upper case and the lower case. If the electric wires are attached and the electric wires are pressed against the press-contacting terminals and combined together, the busbar and the electric wires and the press-connecting terminals are mounted in different manners, so that there is a problem that the number of steps for assembling the electric junction box increases.

The present invention is intended to solve the above-mentioned problems, and an internal circuit of an electric connection box formed by an electric wire and a pressure contact terminal can be easily formed without using a wiring die, and The purpose is to make it possible to confirm the quality of the pressure contact state between the wire and the pressure contact terminal. In particular, it is an object of the present invention to easily form an internal circuit that has pressure contact terminals that project from both surfaces of the upper case and the lower case and that can be connected to external electrical components mounted on both surfaces of the case.

[0011]

In order to achieve the above-mentioned object, the present invention provides an electric circuit in a case composed of an upper case and a lower case according to claim 1, and an electric circuit is provided on at least one of upper and lower surfaces of the case. In an electrical connection box in which electrical components such as input / output connectors, relays, fuses, etc. are mounted, there is a wiring groove for inserting and holding an electric wire, which is mounted inside the case, and has a large groove width at a required portion of the wiring groove. And an insulating plate provided with a pressure contact terminal driving portion, an electric wire inserted and held in the wiring groove, an electric wire pressure contact portion at one end side and an output / input terminal portion at the other end side, and the insulating plate The electric wire inserted and held in the wiring groove is press-fitted at the press-connecting terminal driving portion to press-connect with the electric wire, and the output / input terminal portion is projected from the terminal hole provided on the outer wall of the case, and the connector,
Provided is an electrical connection box, which is equipped with a pressure contact terminal for connecting with an external electric component such as a relay or a fuse.

The pressure contact terminal is driven into both the upper case side and the lower case side of the electric wire laid in the wiring groove of the insulating plate and pressure-connected to the electric wire. The terminals are housed inside a case composed of an upper case and a lower case, and the input / output terminal portions of the pressure contact terminals project from both the upper case and the lower case. (Claim 2) When electrical components such as connectors, relays, fuses, etc. are mounted on only one side of the upper case or the lower case, the input / output terminal portion of the pressure contact terminal is connected to the upper case or the lower case. Needless to say, it is projected to one side.

A bus bar formed by punching out a conductive metal plate may be housed inside the case consisting of the upper case and the lower case. (Claim 3) In that case, the bus bar is housed between the upper case and the insulating plate and / or between the lower case and the insulating plate in a state in which the electric wire and the pressure contact terminal are held by the insulating plate assembled in advance. . Alternatively, a bus bar is attached to the upper case side or the lower case side for assembly.
That is, in the internal circuit of the electrical junction box, which is a circuit that needs to be connected to the power supply side to flow a large current and there are few circuit changes, it may be preferable to use a bus bar rather than an electric wire. Also combines the bus bar as an internal circuit.

The wiring grooves provided on one surface or both surfaces of the insulating plate may have different groove widths, and two or more kinds of electric wires of different sizes may be laid. (Claim 4) That is, a thin electric wire having a small groove width and a thick electric wire having a large groove width are provided, and wiring grooves having different groove widths are mixed on the same surface of the insulating plate. They may be formed in combination, or may be formed on both sides in a mixed manner. For example, in the wiring groove for a thick electric wire having a large groove width, a thick electric wire is laid and a large current circuit is formed by a press contact terminal pressed against the thick electric wire, while a groove width is small. A small electric wire is laid in the wiring groove for the small electric wire, and a small current circuit is configured with the press contact terminal pressed against the small electric wire.

The depth of the wiring groove is preferably set to be approximately twice the outer diameter of the electric wire to be inserted. (Claim 5) When the depth of the wiring groove is at least twice the outer diameter of the electric wire as described above, it becomes easy to directly insert the electric wire into the inside of the wiring groove by an automatic electric wire feeder. Furthermore, two or more electric wires can be wired in the wiring groove, and a plurality of electric wires can be laid in the same direction or crossed.

Further, the insulating plate is provided with a wide pool-shaped wiring groove having a depth not less than twice the outer diameter of the electric wire and capable of inserting a large number of electric wires, and the pool-shaped wiring groove has the other surface. It is preferable that the wiring grooves be further communicated with each other, and that the electric wires be linearly or bent to be inserted in the pool-shaped wiring grooves, and that the electric wires can be vertically crossed or parallel to each other. (Claim 6)

Further, the groove width of the wiring groove is set to be equal to or larger than the diameter of the electric wire to be inserted, and a rib projecting from the groove side surface to the inside of the groove is provided at a required position of the wiring groove. The setting is made below, and the electric wire is held by this rib forming portion. (Claim 7) Alternatively, the groove width of the wiring groove is set to be equal to or larger than the diameter of the electric wire to be inserted, and the wiring groove is formed to meander at a required position.
(Claim 8) A part of the electric wire forming the internal circuit may be laid on the inner surface of the upper case and / or the lower case on the case side. (Claim 9)

According to a tenth aspect of the present invention, the electric wire is inserted into the wiring groove and wired to the insulating plate having the wiring groove, and then the pressure contact terminals are connected to the electric wire from both sides of the insulating plate. The insulation plate, the electric wire and the pressure contact terminal are integrated in advance by press-fitting them, and they are housed in a case consisting of an upper case and a lower case, and the pressure contact terminal is provided through terminal holes provided on the upper and lower surfaces of the case. The present invention provides a method for assembling an electrical connection box, in which the input / output terminal portion is protruded and connected to electrical components such as a connector, a relay, and a fuse mounted on the outer surface of the case.

[0019]

In the structure of claim 1, in the electric connection box, the electric wire and the pressure contact terminal, which are internal circuits, are first inserted directly into the wiring groove of the insulating plate for wiring, and then the pressure contact terminal is pressure-welded to the electric wire. Then install. In this state, since the electric wire and the pressure contact terminal are attached to the insulating plate and not yet assembled with the case, it is possible to confirm the quality of the pressure contact state between the electric wire and the pressure contact terminal. The pressure contact of the pressure contact terminal to the wire and the attachment to the insulating plate can be performed in one process.

According to the second aspect of the present invention, when the input / output terminal portion of the pressure contact terminal, which is in pressure contact with the electric wire laid on the insulating plate, is projected from both the upper case and the lower case, connectors and relays are provided on both sides of the upper case and the lower case. , Electrical components such as fuses can be attached, and the electrical connection box can be used efficiently.

As described in claim 3, when the bus bar is housed inside the electric connection box having the electric wire and the pressure contact terminal as the main internal circuits, the large current circuit whose design change is small can be efficiently arranged.

According to a fourth aspect of the present invention, if the wiring grooves provided on the insulating plate have different groove widths so that two or more types of electric wires of different sizes can be laid, both thick and thin electric wires can be provided. It is possible to wire in the wiring groove of the insulating plate and press-contact with the press-contact terminal. Therefore, the thick electric wire can be used as a large current circuit and the thin electric wire can be used as a small current circuit, and an electric wire of an appropriate size can be laid according to the amount of current to be conducted.

As described in claim 5, the depth of the wiring groove is
If the outer diameter of the electric wire to be inserted is approximately twice or more, the electric wire can be easily inserted directly into the wiring groove from the automatic electric wire feeder. Further, when the pool-shaped wiring groove is provided as described in claim 6, the electric wire can be oriented in an arbitrary direction in the pool-shaped wiring groove, and the electric wire can be crossed with other electric wires or stacked vertically. Wiring can be performed in the same direction, and the flexibility of wiring can be improved. In particular,
When the wiring of the insulating plate is made with a single stroke, which is continuous from the start end to the end, the single stroke can be easily made by directing the electric wire in any direction in the pool-shaped wiring groove.

If the groove width of the wiring groove is equal to or larger than the diameter of the electric wire to be inserted, the electric wire feeder can quickly insert the electric wire into the wiring groove. , Productivity is improved. Moreover, since a rib or a meandering portion is provided at a required portion of the wiring groove to securely hold the electric wire inside the wiring groove, there is no problem caused by widening the wiring groove.

By laying the electric wires on the inner surfaces of the upper case and / or the lower case as described in claim 9, the density of the internal circuit of the electric junction box can be increased.

Further, in the method for assembling the electric connection box according to the tenth aspect, the insulating plate, the electric wire and the pressure contact terminal can be integrally assembled in advance before being attached to the case of the electric connection box. Since it suffices to store this inside the case consisting of the upper case and the lower case, the assembling workability is improved.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings. 1 to 6 show the electric junction box of the first embodiment, and as shown in FIGS. 1A and 1B, a thick insulating plate 12 is sandwiched between an upper case 10 and a lower case 11. It is a configuration. Lower surface 12a of the insulating plate 12
18 is provided with a plurality of wiring grooves 13 (13A, 13B) for inserting and holding electric wires according to the wiring pattern, and the thin electric wires 14 and the thick electric wires 15 are provided in the wiring grooves 13 as shown in FIG.
It is directly inserted from the electric wire feeder 7 shown in (B).
The pressure contact portions 16a and 17a of the pressure contact terminals 16 and 17 are press-fitted to the electric wires 14 and 15 held inside the wiring groove 13 for pressure contact connection, and the output / input terminal portion 16b at the other end of these pressure contact terminals is connected. 17b is projected from the terminal holes 19 and 20 formed on the outer walls of the upper case 10 and the lower case 11.

More specifically, the upper case 10, the lower case 11 and the insulating plate 12 are all made of an insulating resin such as polypropylene. As shown in FIG. 2, the upper case 10 has a fuse fitting portion 21 on the upper wall portion 10a.
And a connector accommodating portion 22 into which a connector (not shown) connected to an electric wire of a wire harness of an external circuit is fitted. The fuse fitting portion 21 and the connector accommodating portion 2 are formed.
The terminal holes 19 are formed on the inner surface surrounded by the peripheral walls of the two. On the other hand, in the lower case 11, a connector accommodating portion 23 into which a connector connected to an electric wire of a wire harness of an external circuit is fitted is projectingly provided on a lower wall portion 11a, and an inner surface surrounded by a peripheral wall of the connector portion 23 is provided. The terminal hole 20 is formed. Upper case 10 and lower case 1
The reference numeral 1 refers to the end faces of the outer peripheral walls 10b and 11b, respectively, to form an electric junction box for housing the internal circuit.

As shown in FIG. 1, the insulating plate 12 is formed in such a shape that it just fits tightly into the internal space formed when the upper case 10 and the lower case 11 are in contact with each other. It is a flat plate with a constant thickness. As shown in FIGS. 4 to 6, wiring grooves 13 corresponding to the wiring pattern are provided on the lower surface 12a side of the insulating plate 12 which is in contact with the inner surface of the lower case 11. The wiring groove 13 is a small electric wire 1.
4 and a wiring groove 13B into which the thick electric wire 15 is inserted.

In the first embodiment, these wiring grooves 13A,
13B is set in correspondence with the outer diameter W1 of the electric wires 14 and 15, respectively, and the width W2 of the wiring grooves 13A and 13B is set to
It is substantially the same as W1, and the relationship between the depth H of the wiring groove 13 and the wire outer diameter W1 is set to H ≧ 2W1. The depth H of the wiring groove is not limited to the above relationship and may be larger than the electric wire diameter W1, but is preferably twice or more as described above.

Further, in the portion connecting the fine electric wire 14 to be inserted into the wiring groove 13A and the pressure contact terminal 16, the wiring groove 1
The side walls 13a and 13b of 3A are widened to form the pressure contact terminal driving portion 24 of the lower surface opening having the groove width W3. Also,
In the wiring groove 13B, a pressure contact terminal driving portion 25 having an upper surface opening that penetrates from the bottom surface portion to the upper surface 12b of the insulating plate 12 is formed. The press contact terminal driving portion 25 does not extend to the lower surface 12a of the insulating plate 12, but is formed from the upper surface 12b to an intermediate portion between the side walls 13a and 13b of the wiring groove 13.

Furthermore, a pressure contact terminal driving portion 26 is formed in a portion of the wiring groove 13A so as to be open to the upper surface 12b side of the insulating plate 12.
(Shown in FIG. 1). The pressure contact terminal driving part 24
Is opposed to the terminal hole 20 of the lower case 11, the press contact terminal driving portion 25 is opposed to the terminal hole 19 of the fuse fitting portion 21 of the upper case 10, and the press contact terminal driving portion 26 is the connector accommodating portion 22 of the upper case 10. It is provided at a position facing the terminal hole 19 of.

Press-contact terminal 1 press-contacted to the thick electric wire 15
7. As shown in FIG. 6, the press-contact terminal 16 press-contacting the thin electric wire 14 is formed of a conductive metal plate in the same shape as the conventional one, and has tab-shaped input / output terminal parts 16b, 17b on one side. It is equipped with a fork on the other side and a slot 16 in the center
It has a shape having wire pressure contact portions 16a and 17a having c and 17c. The wire pressure contact portion 1 of these pressure contact terminals 16 and 17
6a and 17a are the pressure contact terminal driving portions 24, 25 and 26.
The dimensions are almost the same as.

Next, an example of a method for assembling the electrical junction box made of the above members will be described. First, the lower surface 12a of the insulating plate 12
Is directed upward, and the fine electric wire 14 is sent out to the wiring groove 13A for the fine electric wire in the wiring groove 13 by using the electric wire feeder 7, and is directly inserted in a single stroke continuously from the start end to the end of the wiring groove 13A. . At this time, since the depth H of the wiring groove 13A is twice as deep as that of the electric wire 14, the wiring groove 1
Even if the thin electric wire 14 inserted into the 3A is bent, it can be surely held while being corrected in the wiring groove 13A.

Then, the thick electric wire 15 is sent out to the thick electric wire wiring groove 13B by using the electric wire feeder 7, and is similarly continuously inserted directly with one stroke. In this way, the wiring groove 13
After inserting the thin electric wire 14 and the thick electric wire 15 into A and 13B, required portions of these electric wires are cut to form a circuit.

When the wiring of the electric wires 14 and 15 to the wiring grooves 13A and 13B of the insulating plate 12 is completed, first, the pressure contact terminal 16 is
Is press-fitted into the press-connecting terminal driving part 24. At this time, pressure contact terminal 1
The wire pressure contact portion 16a of No. 6 cuts the insulating coating by sandwiching the thin electric wire 14 at both ends of the slot 16c. In the press contacting step, the press contact terminal 16 is electrically connected to the core wire of the electric wire 14, and at the same time, is attached to the insulating plate 12, and the output / input terminal portion 16b is provided.
Protrude from the lower surface side of the insulating plate 12.

Then, with the insulating plate 12 with its upper side facing upward, the pressure contact terminal 16 for a small object is press-fitted into the pressure contact terminal driving portion 26 to connect the pressure contact terminal 16 and the thin object electric wire 14 and at the same time to the insulating plate 12. Attach the input / output terminal 16b to the insulating plate 12
Project from the upper surface side. Similarly, the pressure contact terminal 1 for thick objects
7 is press-fitted into the press-connecting terminal driving part 25 to electrically connect the press-connecting terminal 17 and the thick electric wire 15 and at the same time, is attached to the insulating plate 12, and the output / input terminal part 17b of the press-connecting terminal 17 is attached from the upper surface of the insulating plate 12. Make it protrude. Although the thick electric wire 15 is inserted after inserting the thin electric wire 14 in the above embodiment, the thin electric wire 14 may be inserted after inserting the thick electric wire 15. In addition, after inserting either the thin electric wire 14 or the thick electric wire 15 into the wiring grooves 13A and 13B, a required portion is cut to form a circuit, and then the thin electric wire 14 or the thick electric wire You may insert the other side of the electric wire 15 and cut a required part, and may form a circuit. In this way, the thin electric wire 14 or the thick electric wire 15 with respect to the insulating plate
The order of inserting the wire and cutting the electric wire for forming the circuit can be appropriately changed. Further, the output / input terminal portions 16b and 17b of the pressure contact terminals 16 and 17 which are pressure contacted with the electric wires 14 and 15, respectively.
If necessary, connect the relay terminal.

As described above, the wiring groove 13A of the insulating plate 12,
The pressure contact terminal 1 is attached to the wires 14 and 15 wired in 13B.
In the state where 6 and 17 are pressure-connected, since the upper case 10 and the lower case 11 are not attached to the upper and lower surfaces of the insulating plate 12, it is possible to confirm the quality of the pressure-contact state of the electric wires 14 and 15.

Next, the upper case 10 and the lower case 11 are assembled with the insulating plate 12 sandwiched therebetween. This time,
Terminal hole 19 of fuse fitting portion 21 of upper case 10
From which the output / input terminal portion 17b of the press contact terminal 17 connected to the thick electric wire 15 is projected, and the input / output terminal portion 16b of the press contact terminal 16 connected to the thin electric wire 14 is projected from the terminal hole 19 of the connector accommodating portion 22. . Also, the lower case 11
The output / input terminal portion 16b of the press contact terminal 16 connected to the fine electric wire 14 is projected from the terminal hole 20 of the connector housing portion 23 of FIG.

The internal circuit of the electric junction box assembled as described above is composed of the thin electric wire 14, the thick electric wire 15, and the pressure contact terminals 16 and 17 connected to them. The circuit constituted by the thick electric wire 15 and the pressure contact terminal 17 pressure-connected to the thick electric wire 15 is mainly used for a large current circuit connected to the power supply side, and the terminal portion 17b of the pressure contact terminal 17 is fuse-fitted. It is connected to a fuse (shown in FIG. 2) attached to the portion 21. On the other hand, the circuit composed of the thin electric wire 14 and the pressure contact terminal 16 pressure-connected to the thin electric wire 14 is mainly used for a small current circuit for supplying a current to each electric component, and the terminal portion 16b of the pressure contact terminal 16 is used. Is connected to the connectors fitted in the connector accommodating portions 22 and 23. In this way, the internal circuit of the electrical junction box can be constructed entirely of electric wires and pressure contact terminals without using a bus bar, and the circuit can be easily changed.

In the first embodiment described above, the wiring groove 13A for inserting a thin electric wire and the wiring groove 13B for inserting a thick electric wire are both formed as a lower surface opening on the lower surface side of the insulating plate 12 in a mixed manner. . However, the present invention is not limited to the above-described configuration, and the narrow wiring groove 13A for inserting a thin electric wire is formed by opening on the lower surface or the upper surface, and the wide wiring groove 13B for inserting a thick electric wire is opened on the upper surface or the lower surface. Then, wiring grooves may be formed on both surfaces of the insulating plate.

In the first embodiment, the thick wiring groove 13 is provided.
Since B and the wiring groove 13A for small objects are formed in a mixed manner in a plane, the area becomes large, and therefore, it can be suitably adopted when the space in the plane direction of the electric junction box is large. However, when the installation space of the insulating plate in the plane direction is narrow, as shown in the second embodiment of FIG. 7, the thickness of the insulating plate 12 is made larger, and the lower end portion of the insulating plate 12 has a lower end opening. The wiring groove 13A may be formed, and the wiring groove 13B having an upper end opening may be formed in the upper side portion.

FIG. 8 shows a third embodiment of the invention, in which the electric wire 1
The width W2 of the wiring groove 13 is made larger than the outer diameter W1 of the electric wire so that the wirings 4 and 15 can be easily inserted into the wiring groove 13.
<W2 is set so that the electric wire 14 or 15 can be smoothly inserted into the wiring groove 13. And wiring groove 1
A rib 30 for holding an electric wire is provided at a required position of No. 3 so as to project from both sides 13a and 13b of the wiring groove 13 so as to protrude from the ribs 30.
The width W4 between them is W1 ≧ W4 with respect to the wire outer diameter W1. That is, W2> W1 ≧ W4.

As shown in FIG. 9, the ribs 30 are installed at least when both ends P1 and P2 in the longitudinal direction of one wiring groove 13 for wiring one electric wire and the electric wire curved portion are present. Are provided at the curved end points P3 and P4 on the downstream side of the wiring. At the site where these ribs 30 are installed, the electric wire 14 or 15 is sandwiched between the openings of the wiring groove 13, but when the press-fitting operation of the press-connecting terminal is performed thereafter, the electric wires 14 and 15 are inserted.
Are pushed to the bottom of the wiring groove 13.

Although the rib 30 has a semicircular shape, the shape is not limited, and the rib 30 has a quadrangular shape as shown in FIG. 10A and the triangular rib 30 as shown in FIG. 10B.
As shown in (C), an inverted triangular rib 30 may be used.

In FIG. 10D, the groove width W2 is the wire diameter W.
In the state of 1 or more, the protruding portions 30 are alternately provided from both sides of the wiring groove at intervals in the length direction of the electric wire,
I try to make the wire meander. In this way the protrusion 3
When the electric wire is meandered at 0, it is possible to prevent the electric wire from protruding from the wiring groove, which is likely to occur in a straight portion, by the meandering. The degree of meandering is set so as not to affect the insertion of the electric wire by the automatic electric wire feeder.

FIG. 11 shows a fourth embodiment, and similarly to the third embodiment, the groove width W2 of the wiring groove 13 is set to be equal to or larger than the outer diameter W1 of the electric wire 14 or 15, and the rib 30 is installed at the same position. A pair of projecting portions 33 projecting inward from both sides of the open end of the wiring groove 13 are formed at these positions after inserting the electric wire 14 or 15 into the wiring groove 13. That is, the wiring groove 1
After inserting the wire 14 or 15 into the wiring 3, the wiring groove 13
Edges on both sides of the opening end are crushed into the groove opening to form a pair of protrusions 33. With this protrusion 33,
Since the groove opening width becomes narrow, the electric wires 14 and 15 cannot come out of the wiring groove.

FIG. 12 shows a fifth embodiment of the present invention in which a pool-shaped wiring groove 60 is provided in the insulating plate 12. The pool-shaped wiring groove 60 communicates with a large number of wiring grooves 13A in multiple directions, as shown by the cross-hatched dashed line in the figure, and the electric wires 14 that are inserted through these wiring grooves 13A are linearly arranged in the pool-shaped wiring groove 60. The wiring is made in multiple directions by tilting or refracting. Moreover, since the pool-shaped wiring groove 60 is twice or more the outer diameter of one electric wire, two or three electric wires may be vertically overlapped and crossed. In this way, when the pool-shaped wiring groove 60 is provided, the electric wire 14 can be wired in an arbitrary direction within the pool-shaped wiring groove 60, and the degree of freedom of wiring can be increased, and
When the electric wire feeder inserts the electric wire 14 into the wiring groove and lays the wire, the wire can be continuously drawn from the start end to the end with one stroke.

FIGS. 13 and 14 show a sixth embodiment of the present invention. Similar to the above embodiment, wiring grooves 13A and 13B are provided on both surfaces of the insulating plate 12 to wire the electric wires 14 and 15. Together with these electric wires 14 and 15, pressure contact terminals 42 and 4
3 is driven in from both the upper and lower sides and pressure-contacted to form an internal circuit including an electric wire and a pressure-contact terminal in advance. Further, a bus bar 45 formed by punching out a conductive metal plate between the upper surface side of the insulating plate 12 and the upper case 10 (in FIG. 14,
Black Nuri). In the bus bar 45,
An upwardly bent male tab-shaped terminal 45a is provided, the terminal 45a is projected from a terminal hole provided in the upper case 10, and is connected to an external electric component mounted on the upper surface of the upper case 10.

The portion for accommodating the bus bar 45 is shown in FIG.
As shown in FIG. 4, a recess 46 for housing the bus bar is provided on the upper surface of the insulating plate 12. The electric wire 15 is wired along the bottom surface of the recess 46, and the bus bar 45 is disposed above the recess 46 so as to be flush with the upper surface of the insulating plate 12.

When the bus bar 45 is also used as an internal circuit, the insulating plate 12 is integrally assembled with the electric wire and the pressure contact terminal, and the bus bar 45 may be fitted into the recess 46 of the insulating plate 12. Like this, bus bar 4
Since 5 is also pre-assembled to the insulating plate 12, the insulating plate 12
By simply assembling the upper case 10 and the lower case 11, it is possible to easily assemble the internal circuit formed by combining the internal circuit including the electric wire and the pressure contact terminal and the internal circuit including the bus bar inside the case of the electric junction box. it can.

When the bus bar is combined, the bus bar is not limited to the above-mentioned embodiment, and the bus bar may be attached to the upper case and / or the lower case side. in this case,
Since the insulating plate to which the electric wire and the pressure contact terminal are attached and the case to which the bus bar is previously attached are combined, the electric connection box can be easily assembled.

FIG. 15 shows a seventh embodiment of the present invention, in which the wiring grooves 13E and 13F provided in the insulating plate 12 are connected to the electric wires 14 and 1, respectively.
5 or more times the outer diameter of 5 and wiring grooves 13E and 13F
It is formed by crossing and. Therefore, the electric wire 14 inserted into the wiring groove 13E and the electric wire 15 inserted into the wiring groove 13F can be crossed and wired.

FIG. 16 shows an eighth embodiment of the present invention, in which electric wires 55 are also laid on the inner surface of the upper wall 10a of the upper case 10. The electric wire 55 is wired along a guide 57 projectingly provided on the inner surface of the upper case 10, and the electric wire 55 is laid while pressure-contacting the pressure-contacting terminal 58 that is previously driven in the upper case 10. Or upper case 1
After arranging the electric wire 55 to 0, the pressure contact terminal 58 may be driven into the upper case to press the electric wire 55.

As described above, the electric wires 14 and 1 are attached to the insulating plate 12 assembled between the upper case 10 and the lower case 11.
When 5 is wired to provide an internal circuit that is pressure-connected to the pressure contact terminal, and the electric wire 55 is also wired to the upper case side to form an internal circuit with the pressure contact terminal 58, the internal circuit accommodated in the electrical junction box Can have a high density. Needless to say, the lower case 11 side can be wired.

[0056]

As is apparent from the above description, in the electric junction box according to claim 1 of the present invention, an electric wire and a pressure contact terminal connected to the electric wire and connected to an external circuit are used as the internal circuit. Therefore, if the design change of the internal circuit occurs,
It can be dealt with easily. In addition, since the wiring groove is formed in the insulating plate and wiring is performed by the automatic electric wire feeder, the conventionally required wiring die becomes unnecessary. Further, the step of press-contacting the press-contact terminal to the electric wire wired on the insulating plate and the step of attaching the press-contact terminal to the insulating plate are performed in one step. On the other hand, conventionally, the step of fixing the pressure contact terminal to the case, the step of laying the electric wire in the wiring die, and the step of transferring the wire laid in this wiring die to the case and pressure welding Since the step of pressing the terminal is necessary, the number of steps can be significantly reduced.

In the electrical junction box of the present invention, since the input / output terminal portions of the pressure contact terminals assembled to the insulating plate can be projected from both sides of the upper case and the lower case, connectors and relays can be provided on both upper and lower sides of the electrical junction box. , Electrical components such as fuses can be attached and connected to the internal circuit via the pressure contact terminals. In this way, efficient use of the electrical junction box can be achieved,
Therefore, the electric junction box can be downsized.

In the electric connection box of claim 3, the bus bar is housed inside the electric connection box whose main circuit is the electric wire and the pressure contact terminal, and the bus bar is used in combination. A large current circuit can be efficiently arranged.

In the electrical junction box of the fourth aspect, since the wiring grooves provided in the insulating plate have different groove widths and two or more kinds of electric wires of different sizes can be laid, the electric wire corresponding to the electric current value to be conducted. Can be used.

In the electric connection box of claims 5 and 6, since the depth of the wiring groove is about twice or more the outer diameter of the electric wire to be inserted, a plurality of electric wires are stacked in the wiring groove. Wiring can be performed in the same direction, or wirings can be crossed to improve the degree of freedom of wiring. Further, when the pool-shaped wiring groove is provided, the electric wire can be arbitrarily bent in a straight line direction, an inclined direction, or bent in the pool-shaped wiring groove, and the electric wire can be oriented in a desired direction. Therefore, by providing the pool-shaped wiring groove, the electric wire can be laid with a single stroke on the insulating plate.

In the electric connection box of claims 7 and 8, since the groove width of the wiring groove is equal to or larger than the diameter of the electric wire to be inserted,
An automatic wire feeder can quickly insert wires into the wiring groove, improving productivity. Moreover, since a rib or a meandering portion is provided at a required portion of the wiring groove to securely hold the electric wire inside the wiring groove, there is no problem caused by widening the wiring groove.

In the electric connection box of the ninth aspect, since the electric wires are laid on the inner surface of the upper case and / or the lower case, the density of the internal circuit of the electric connection box can be increased.

In the method for assembling the electrical junction box according to claim 10,
Instead of assembling the electric wire on the case side as in the conventional method, the electric wire is inserted into the wiring groove of the insulating plate and laid, and the pressure contact terminal is connected to the electric wire. The terminals can be connected, and the pressure-contact terminals can be connected at high density. Further, the insulating plate, the electric wire, and the pressure contact terminal can be integrally assembled in advance, and it is only necessary to store this inside the case including the upper case and the lower case, so that the assembling workability is improved.

[Brief description of drawings]

FIGS. 1A and 1B are vertical cross-sectional views of a main part of a first embodiment of an electric junction box of the present invention.

FIG. 2 is a plan view of an upper case of the electrical junction box of the first embodiment.

FIG. 3 is a bottom view of a lower case of the electrical junction box of the first embodiment.

FIG. 4 is a bottom view of the insulating plate of the electrical junction box of the first embodiment.

5 is a perspective view of a main part of the insulating plate shown in FIG.

6 is a cross-sectional view showing an inserted state of the electric wire and the pressure contact terminal into the insulating plate shown in FIG.

FIG. 7 is a sectional view of an essential part of an insulating plate according to a second embodiment.

FIG. 8 is a perspective view of a main part of an insulating plate according to a third embodiment.

FIG. 9 is a schematic plan view of an insulating plate according to a third embodiment.

10 (A), (B), (C), and (D) are schematic diagrams showing a modification of the third embodiment.

FIG. 11 is a sectional view of an essential part of an insulating plate according to a fourth embodiment.

FIG. 12 is a plan view of an essential part of an insulating plate according to a fifth embodiment.

FIG. 13 is an exploded perspective view of a sixth embodiment.

FIG. 14 is a cross-sectional view of essential parts of a sixth embodiment.

FIG. 15 is a sectional view of an essential part of an insulating plate according to a seventh embodiment.

FIG. 16 is a sectional view of an essential part of an eighth embodiment.

FIG. 17 is a wiring diagram showing an internal circuit of a conventional electrical junction box.

18A and 18B show a conventional method for laying an electric wire, wherein FIG. 18A is a partial perspective view of a wiring die, and FIG. 18B is a schematic view showing a wiring state of the electric wire.

[Explanation of symbols]

 10 Upper Case 11 Lower Case 12 Insulation Plate 13 Wiring Groove 13A Wiring Groove for Fine Electric Wire 13B Wiring Groove for Heavy Electric Wire 14 Fine Electric Wire 15 Thick Electric Wire 16, 17 Pressure Contact Terminal 16a, 17a Electric Wire Pressure Contact Section 16b, 17b Input / Output Terminal Part 19, 20 Terminal hole 24, 25, 26 Pressure contact terminal driving part 30 Rib 60 Pool-shaped wiring groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshito Oka, Yoshito Oka, No. 14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd. (72) Masami Kobayashi, No. 14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Denso Co., Ltd.

Claims (10)

[Claims] 1. An electrical connection box in which an electric circuit is housed in a case consisting of an upper case and a lower case, and electrical components such as a connector, a relay, and a fuse for outputting and outputting electricity to and from at least one of upper and lower surfaces of the case are mounted. An insulating plate which is mounted inside the case, has a wiring groove for inserting and holding an electric wire, and is provided with a pressure contact terminal driving portion having a large groove width at a required position of the wiring groove, and is inserted into the wiring groove. The held wire and the wire pressure contact part on one end side and the output / input terminal part on the other end side are pressed into the wire groove inserted and held in the wiring groove of the insulating plate at the pressure contact terminal driving part. And a pressure contact terminal for projecting the input / output terminal portion from a terminal hole provided on the outer wall of the case and connecting with an external electric component such as the connector, relay, fuse, or the like. Electricity Connection box. 2. The pressure contact terminal is driven into both the upper case side and the lower case side of an electric wire laid in a wiring groove of an insulating plate and pressure-connected to the electric wire. The electrical junction box according to claim 1, wherein the pressure contact terminal and the pressure contact terminal are housed inside a case composed of an upper case and a lower case, and the input / output terminal portions of the pressure contact terminal are projected from both the upper case and the lower case. 3. The electrical junction box according to claim 1, wherein a bus bar formed by punching out a conductive metal plate is housed inside a case composed of the upper case and the lower case. 4. The electrical junction box according to claim 1, wherein the wiring grooves provided on one surface or both surfaces of the insulating plate have different groove widths, and two or more kinds of electric wires of different sizes are laid. 5. The electrical junction box according to claim 1, wherein the depth of the wiring groove is set to be approximately twice or more the outer diameter of the electric wire to be inserted. 6. The insulating plate is provided with a wide pool-shaped wiring groove having a depth not less than twice the outer diameter of the electric wire and capable of inserting a large number of electric wires, and the pool-shaped wiring groove has the other surface. The electrical connection box according to claim 1, wherein the wiring grooves are communicated with each other, and the electric wires can be inserted linearly or bent in the pool-shaped wiring grooves, and can be wired vertically or in parallel. 7. The groove width of the wiring groove is made equal to or larger than the diameter of the electric wire to be inserted, and a rib projecting from the groove side surface to the inside of the groove is provided at a required position of the wiring groove. The electric connection box according to claim 1, wherein the electric wire is held by the rib forming portion set as follows. 8. The electrical junction box according to claim 1, wherein a width of the wiring groove is equal to or larger than a diameter of an electric wire to be inserted, and the wiring groove is formed by meandering at a required position. 9. The electrical junction box according to claim 1, wherein electric wires are laid on the inner surfaces of the upper case and / or the lower case. 10. An insulating plate having a wiring groove is provided with an electric wire inserted into the wiring groove and laid, and then press-fitting terminals are press-fitted to the electric wire from both sides of the insulating plate to mount the insulating wire. A plate, an electric wire, and a pressure contact terminal that are integrated in advance are housed inside a case consisting of an upper case and a lower case, and the input / output terminal portion of the pressure contact terminal is projected from terminal holes provided on the upper and lower surfaces of the case. , A method for assembling an electrical connection box that connects to electrical components such as connectors, relays, fuses, etc. that are mounted on the outer surface of the case.