JPH0963456A - Electric wire wiring structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify electric wire wiring structure, improve workability, lighten weight, and reduce the cost, by reducing a circuit of heavy electric wire, or change the heavy electric wire into a thin one, and shorten a wire length. SOLUTION: This electric wire wiring structure is provided with a battery 1, a heavy electric wire D, for connecting large capacity electrical equipment 9 to a battery 1, by interposing a large capacity fuse and a switch 7 in order and with a thin electric wire (d) connected to the wire D, between the switch 7 and the equipment 9, via a small capacity fuse, and connecting a small capacity electrical equipment 13 to the terminal. One side joint terminal, mounted on a joint fuse connector 21, is interposed in the wire D between the switch 7 and the equipment 9, and the other side joint terminal, to be connected to this one side joint terminal via the small capacity fuse, is provided to the joint fuse connector 21 to connected this other side joint terminal and the small capacity electric equipment 13 by the wire (d).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire wiring structure for a circuit in which a thick electric wire and a thin electric wire are used. More specifically, the thick electric wire is reduced or changed to a thin electric wire to obtain a wire length. And shortens the circuit and simplifies the circuit, and is particularly suitable for wiring the rear heating wire and the heater mirror in an automobile.

[0002]

2. Description of the Related Art A wiring box of an automobile is provided with a fuse box in order to prevent ignition due to an abnormal current. In the fuse box, fuses connected in series to each of the plurality of circuits are centrally arranged. On the other hand, some electrical components are desired to be ON / OFF controlled by the same open / close switch, but have different electrical capacities. For example, in the case of the rear heating wire, which is a large-capacity electrical component, and the heater mirror, which is a small-capacity electrical component,
ON / OF by the same switch for the rear heating wire arranged by the thick electric wire and the heater mirror arranged by the thin electric wire
Both F-controlled and thick electric wires and thin electric wires were routed via the fuse in the fuse box.

FIG. 5 is a vehicle electrical path diagram showing a conventional wire wiring structure of a rear heating wire and a heater mirror, and FIG. 6 is a circuit diagram of the wire wiring structure of FIG. In this conventional example, the thick electric wire D from the battery 1 is connected to the large capacity fuse 3 and the small capacity fuse 5 in the fuse box 6, and the thick electric wire D on the load side of the large capacity fuse 3 passes through the switch 7. Then, it is connected to the rear heating wire 9. The thick electric wire D is branched on the control side of the switch 7 and is grounded via the coil of the relay 11. On the other hand, the fine electric wire d is the small-capacity fuse 5
It was connected to the pair of heater mirrors 13 from the load side via the contacts of the relay 11.

In this conventional example, when the switch 7 is closed, the current from the battery 1 flows to the rear heating wire 9 via the large-capacity fuse 3, and the current flows to the coil of the relay 11 to close the contacts. The current from the small capacity fuse 5 flowed to the heater mirror 13.

FIG. 7 is a vehicle electric path diagram showing another electric wire wiring structure of the rear heating wire and the heater mirror, and FIG. 8 is a circuit diagram of the electric wire wiring structure of FIG. In this conventional example, the thick electric wire D from the battery 1 is connected to the large capacity fuse 3 in the fuse box 6, and the thick electric wire D on the load side of the large capacity fuse 3 is connected to the rear heating wire 9 via the switch 7. Connected. The thick electric wire D is branched on the control side of the switch 7 and connected to the small capacity fuse 5 in the fuse box 6. On the other hand, the thin electric wire d was connected to the pair of heater mirrors 13 from the load side of the small capacity fuse 5.

In this conventional example, when the switch 7 is closed, the current from the battery 1 flows to the rear heating wire 9 via the large-capacity fuse 3, and the current branched on the control side of the switch connects to the small-capacity fuse 5. Through the heater mirror 13.

[0007]

However, in the above-mentioned conventional wire wiring structure, since the large-capacity fuse 3 and the small-capacity fuse 5 are both housed in the fuse box 6, the rear heating wire 9 and the heater mirror 13 are connected to each other. All of the circuits must go through the fuse box 6,
There is a drawback that the number of wires increases. That is, in the electric wire routing structure shown in FIGS. 5 and 6, a thick electric wire D is required between the fuse box 6 and the switch 7, and a thin electric wire is also provided between the fuse box 6 and the relay 11. d is required, and at least two electric wires D and d are required between the fuse box 6 and the instrument panel. Also,
Also on the control side of the switch, the thick electric wire D ₂ had to be branched and grounded via the relay 11. Further, in this conventional example, there is a problem that the relay 11, which is an operating component, must be used. Further, in the electric wire wiring structure shown in FIGS. 7 and 8, a thick electric wire D is required between the fuse box 6 and the switch 7, and a thick electric wire is also provided between the control side of the switch and the fuse box 6. The electric wire D is required, and further, the fuse box 6 and the heater mirror 1
The thin electric wire d is also required between the fuse box 6 and the instrument panel 3, and at least three electric wires D, D, d are required between the fuse box 6 and the instrument panel. The present invention has been made in view of the above situation, and it is possible to reduce or change the circuit that is wired by a thick electric wire to a thin electric wire, and to provide an electric wire wiring structure that can also reduce the wire length, The purpose is to simplify the wire wiring structure, improve workability, reduce weight, and reduce costs.

[0008]

Means for Solving the Problems In order to achieve the above object, the structure of an electric wire wiring structure according to the present invention comprises a battery,
A thick electric wire connected to the battery and sequentially inserting a large-capacity fuse and an open / close switch to connect a large-capacity electric component to the end, and a small electric wire in the thick electric wire between the open / close switch and the large-capacity electric component. A thin electric wire that is connected through a fuse and connects a small-capacity electrical component to the end, and one joint attached to the joint fuse connector on the thick electrical wire between the open / close switch and the large-capacity electrical component Through the terminal,
The other joint terminal connected to the one joint terminal through the small capacity fuse is provided in the joint fuse connector, and the other joint terminal and the small capacity electrical component are connected by the fine electric wire. It is a feature. In this configuration, when the switch is closed, the current from the battery flows to the joint fuse connector via the large capacity fuse. The current that flows to the joint fuse connector is divided into the current that is directly supplied to the large-capacity electrical component and the current that is supplied to the small-capacity electrical component, and the current supplied to the small-capacity electrical component is attached to the joint fuse connector. It flows to the small-capacity electrical component via the small-capacity fuse that has been cut.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of an electric wire wiring structure according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a vehicle electric path diagram of a rear heating wire and a heater mirror showing an electric wire wiring structure according to the present invention, and FIG. 2 is a perspective view showing an inside of a joint fuse connector used in the electric wire wiring structure of FIG. 3 is a circuit diagram of the electric wire wiring structure of FIG. The same members as those shown in FIGS. 5 to 8 are designated by the same reference numerals, and the duplicate description will be omitted. In the electric wire wiring structure according to the present invention, the joint fuse connector 21 shown in FIG. 2 is used for the wiring. The joint fuse connector 21 has a substantially rectangular tubular housing 23.
Inside, a pair of joint terminals 25a and 25b are vertically mounted.

Each of the joint terminals 25a and 25b has a slit 27 cut in the central edge of the terminal plate portion to form a bifurcated male terminal 29. Further, fuse terminal fitting portions 31a and 31b are formed at the rear portion of the terminal plate portion, and the fuse terminal fitting portions 31a and 31b are projected in the direction opposite to the projecting direction of the male terminal 29. Joint terminal 25
A set of a and 25b, which are formed in the same manner, are mounted in the housing 23 in parallel in the vertical direction. The joint terminals 25a and 25b mounted in the housing 23 are
The four male terminals 29 are arranged in the fitting opening 33 on the front surface of the housing 23.

On the other hand, the fuse terminal fitting portions 31a and 31b
Are arranged on the rear side in the housing 23 so as to face each other in the vertical direction. A rectangular tube-shaped fuse fitting portion 37 is formed on the rear end surface of the housing 23, and the fuse terminal fitting portions 31a and 31b of the joint terminals 25a and 25b are arranged inside the fuse fitting portion 37. That is, by inserting the small-capacity fuse 5 into the fuse fitting portion 37, the pair of fuse terminals 5 a, 5 a of the small-capacity fuse 5 are inserted.
b is a pair of fuse terminal fitting portions 3 in the housing 23.
It is designed to be inserted into each of 1a and 31b.
Therefore, the pair of joint terminals 25a and 25b are
When the small-capacity fuse 5 is inserted, the conductive state is first established via the small-capacity fuse 5.

A female connector 41 to which four circuits are connected is fitted to the joint fuse connector 21.
Inside the female connector 41, female terminals (not shown) connected to the thick electric wires D ₅ , D ₆ and the thin electric wires d ₃ , d ₄ are accommodated, and the female connector 41 is connected to the joint fuse connector 21.
The female terminals are fitted to the male terminals 29, respectively.

At this time, the thick electric wires D ₅ and D ₆ are connected to the upper joint terminal 25a inside the housing 23, and the thin electric wires d ₃ and d ₄ are connected to the lower joint terminal 25b inside the housing 23. Therefore, a thick electric wire D with a large current capacity
₅ and D ₆ are joint terminals 2 on the upper side in the housing 23.
It will be directly connected by 5a. Further, since the upper joint terminal 25a is connected to the lower joint terminal 25b via the small capacity fuse 5, the large-current thick electric wires D ₅ and D ₆ can be connected to each other via the small capacity fuse 5 to generate a small current. It will be branched into the fine electric wires d ₃ and d ₄ having a capacity.

In the electric wire wiring structure according to this embodiment,
The above-mentioned joint fuse connector 21 is provided on the instrument panel side. Then, the thick electric wire D from the battery 1 is connected to the switch 7 via the large-capacity fuse 3 in the fuse box 6. The control side of the switch 7 is connected to the joint fuse connector 21 via the thick electric wire D ₅ . Futomono wire D ₅ is connected to Futomono wire D ₆ via the joint terminal 25a, Futomono wire D ₆ is connected to the rear hot wire 9 is a large-capacity electrical component.

On the other hand, in the joint fuse connector 21, thin electric wires d ₃ , d are connected to the joint terminal 25b connected to the joint terminal 25a via the small capacity fuse 5.
₄ is connected, and the fine electric wires d ₃ and d ₄ are connected to the heater mirror 13 which is a pair of small-capacity electric components. FIG.
As shown, the connection to the heater mirror 13, be those connected to only one of the joint terminal 25b to Hosobutsu wire d _3, d _4, is branched and connected it to the respective heater mirror 13 May be.

In the electric wire wiring structure thus arranged, when the switch 7 is closed, the current from the battery 1 flows to the joint fuse connector 21 via the fuse box 6. Joint fuse connector 2
The current flowing to 1 is divided into a current directly supplied to the rear heating wire 9 and a current supplied to the heater mirror 13,
The current supplied to the heater mirror 13 flows to the heater mirror 13 via the small capacity fuse 5 attached to the joint fuse connector 21.

According to this wire wiring structure, the joint fuse connector 21 having the small-capacity fuse 5 mounted thereon is arranged on the instrument panel side, and the joint fuse connector 21 connects the thick electric wires D ₅ and D _{6 to} the relay connection. In addition to the above, it is possible to branch to the fine electric wires d ₃ and d ₄ , so that the electric wire to the heater mirror 13 does not have to pass through the fuse box 6, and the space between the fuse box 6 and the instrument panel can be eliminated. It becomes possible to perform wiring with only one thick electric wire D.

Further, there is no need to branch other thick electric wires, and the rear heating wire 9 and the heater mirror 1 can be arranged in the shortest distance.
Since the wires can be routed to 3, the thick wires can be reduced and the circuit line length can be shortened, and the routing structure can be simplified and lightened, and the cost can be reduced.

In the joint fuse connector 21 described above, one of the housings 23 is used as a front end face, the front end face side is fitted with the female connector 41, and the small capacity fuse 5 is mounted from the rear end face side. The joint fuse connector 21 has a housing 23, as shown in FIG.
Female connector fitting openings 5 on the front end face and the rear end face of the
1, 53, 55, 57 may be formed.
At this time, the joint terminals 25a and 25b are mounted in the housing 23 with the male terminals 29 arranged on opposite sides on a straight line passing through the front and rear of the housing 23. The fuse terminal fitting portions 31a and 31b are formed so as to face each other in the housing 23, and can be connected by the small-capacity fuse 5 that is opened in the upper surface of the housing 23 and is attached to the fuse fitting portion 37. To do.

In such a modification, the thick electric wires D ₅ , D
₆ and the fine electric wires d ₃ and d ₄ can be connected in a linear direction. Therefore, it is suitable for use when the power supply side and the branch circuit side are arranged in opposite directions. Then, in this case, by fixing the lower surface side of the housing 23 to another component or the body panel, the small-capacity fuse 5 is exposed on the upper surface, and the heat dissipation and exchangeability of the small-capacity fuse 5 can be improved. .

In the above-mentioned embodiment, the electric wire wiring structure for the rear heating wire and the heater mirror has been described as an example. However, the electric wire wiring structure according to the present invention may be used for other electric components such as small lamps, power sheets, It is also suitable for use in a large current circuit such as a heating sheet.

[0022]

As described in detail above, according to the electric wire routing structure of the present invention, the joint fuse connector that enables the relay connection of the thick electric wire is provided, and the small capacity fuse is attached to the joint fuse connector. Since it is possible to branch the thick electric wire into a plurality of small electric wires through a small capacity fuse, it is possible to avoid passing the electric wire to the small capacity electrical equipment to the fuse box, and to connect the fuse box to the joint fuse connector. The space can be installed with only one thick electric wire. As a result, it is possible to reduce the number of circuits that were conventionally routed with thick electric wires or change them to thin electric wires, and also to shorten the wire length, simplifying the electric wire wiring structure, improving workability, and reducing weight. The cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a vehicle electric path diagram of a rear heating wire and a heater mirror showing an electric wire wiring structure according to the present invention.

FIG. 2 is a perspective view of the inside of a joint fuse connector used in the electric wire routing structure of FIG. 1 seen through.

FIG. 3 is a circuit diagram of the wire wiring structure of FIG.

FIG. 4 is a perspective view showing a modified example of the joint fuse connector of FIG.

FIG. 5 is a vehicle electric path diagram showing a conventional electric wire wiring structure of a rear heating wire and a heater mirror.

FIG. 6 is a circuit diagram of the wire wiring structure of FIG.

FIG. 7 is a vehicle electrical path diagram showing another conventional wire wiring structure for the rear heating wire and the heater mirror.

FIG. 8 is a circuit diagram of the electric wire wiring structure of FIG. 7.

[Explanation of symbols]

 1 Battery 3 Large-capacity fuse 5 Small-capacity fuse 7 Open / close switch 9 Rear heating wire (large-capacity electrical component) 13 Heater mirror (small-capacity electrical component) 21 Joint fuse connector 25a, 25b Joint terminal 29 Male terminal (multiple terminals) 41 Connector D Thick electric wire d Thin electric wire

Claims (4)

[Claims] 1. A battery, a thick electric wire connected to the battery and sequentially connecting a large-capacity fuse and an opening / closing switch to connect a large-capacity electrical component to the end, and between the opening / closing switch and the large-capacity electrical component. A thin electric wire that is connected to the thick electric wire via a small-capacity fuse and connects a small-capacity electrical component to the end, and the thick electrical wire between the open / close switch and the large-capacity electrical component,
One joint terminal attached to the joint fuse connector is interposed, and the other joint terminal connected to the one joint terminal via the small capacity fuse is provided in the joint fuse connector, and the other joint terminal is provided. An electric wire routing structure characterized in that the small-capacity electric component is connected to the small electric wire. 2. The electric wire routing structure according to claim 1, wherein the thick electric wire and the thin electric wire connected to the joint fuse connector are connected via a connector. 3. The electric wire routing according to claim 1, wherein a plurality of terminals are formed on the other joint terminal, and each of the terminals is connected to the plurality of small-capacity electrical components by the thin electric wire. Construction. 4. The electric wire routing structure according to claim 1, wherein the small-capacity fuse is detachable from the joint fuse connector.