JP2013241050A - Vehicular connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a vehicular connector at an optional location by obviating the need of fuse replacement work without limiting the installation location of the connector around a driver seat, and to reduce the number and length of wire harnesses constituting a vehicular electric circuit.SOLUTION: A vehicular connector 11 is connected to a vehicular electric circuit 31 connected to an on-vehicle electrical component, wherein a poly-switch breaker 12 or a variable resistor 13 is installed in a circuit of the connector.

Description

  The present invention relates to a vehicle connector, and more particularly to a vehicle connector connected to an electric circuit connected to an in-vehicle electrical component.

  The invention of the fuse connector described in Patent Document 1 states that “a fuse box is not required, power can be supplied to a plurality of branch circuits, and a fuse connector with good heat dissipation of the fuse is obtained, resulting in wire saving, small size and light weight. And to eliminate thermal problems. ” This fuse connector is composed of a housing, a joint terminal in which a fuse terminal fitting portion and a plurality of connector terminals are integrally formed, and a pressure contact blade and a fuse terminal fitting portion that are attached to the housing. Is inserted into the fuse terminal fitting portion of the joint terminal and the other is inserted into the fuse terminal fitting portion of the pressure contact terminal. Thus, a fuse is provided that electrically connects the joint terminal and the pressure contact terminal via the fusing part. "

  The invention of the fuse connector described in Patent Document 2 is “providing a fuse connector capable of sharing a plurality of types of fuses”. This fuse connector is provided with "a plurality of front stop portions that enable a plurality of types of fuses having different positional relationships between the case and the tab terminal in the assembly direction of the fuses to be individually locked. As a result, regardless of which of the multiple types of fuses are assembled, the fuses are stopped in place and the tab terminal is connected to the terminal fitting in an appropriate positional relationship. Only one housing is required for the fuse. "

On the other hand, in an electric circuit for a vehicle such as an automobile, a relay 121 and a fuse 122 are connected from a power source and also connected to a wire harness 123 as shown in a conventional engine room circuit 111 shown in FIG. .
Then, as in the conventional example illustrating the front of the vehicle interior driver illustrated in FIG. 7, the electrical components such as the ignition switch 102, the wiper switch 103, the wiper / washer motor 104, the outer mirror, the shift lock, and the cigar lighter are connected from the power source. They are connected by a circuit, and a fuse 101 is interposed in the circuit. As shown in FIG. 7, the circuit is provided around the wire harness 123 that reciprocates over both widths of the vehicle.
The conventional example shown in FIG. 8 improves the engine room circuit 111 shown in FIG. In other words, the junction box 113 is provided in the circuit 112 in the engine room. The junction box 113 has a structure in which a relay 121 and a fuse 122 are incorporated, and constitutes a part of a wire harness 123 circuit that is an electric circuit connected to an in-vehicle electrical component. The internal circuit of the junction box 113 is connected by a brass plate called a printed circuit board-like bus bar, so that the thick wire is deleted, the power to each wire harness, signal distribution, and joint absorption. Therefore, reduction in the number of wires in the wire harness, reduction in diameter, and improvement in reliability have been achieved.

Japanese Patent Laid-Open No. 9-063457 JP 2004-206910 A

In any of the fuse connectors described in Patent Documents 1 and 2, a fuse is inserted into the connector. Therefore, when the fuse is blown, there is a problem that requires a fuse replacement work. For this reason, it is necessary to select a place with good workability as a place for installing the connector. In the first place, these fuse connectors are not related to the vehicle connector connected to the electric circuit for connecting the on-vehicle electrical components.
The conventional example shown in FIGS. 6 and 7 has a problem that it is necessary to provide a circuit that reciprocates over both widths of the vehicle and the wire harness 123. Furthermore, in the conventional example shown in FIG. 8, which has the problems of weight increase and cost increase due to the routing and extension of circuit wires, circuit components such as fuses and resistors are concentrated in the junction box. It is common. Therefore, it has the subject of the weight increase by the routing and extension of a circuit wire, and the cost increase, and also has the subject which becomes heavy as the vehicle-mounted space of junction box itself becomes large.
Further, in the conventional example shown in FIGS. 7 and 8, replacement work is required every time the fuse is blown, but the replacement work is particularly troublesome because it is installed in a circuit for connecting electrical components of a vehicle such as an automobile. If it is not installed at a position where replacement work is easy, it is inferior in workability and must be installed around the driver's seat, making it difficult to install the vehicle connector at any place in the vehicle such as the rear seat. The problem was lacking in the degree of freedom.
Furthermore, since the required voltage of the lamp is low, the wire harness is extended to increase the resistance value, so that the mass of the wire harness becomes heavy and costs increase.

  The objective of this invention is providing the connector for vehicles connected to the electric circuit which connects vehicle-mounted electrical equipment which solves these subjects.

The vehicle connector of the present invention is
When the element temperature rises above a certain temperature due to overcurrent or overheating, the resistance value increases, limiting the circuit current, and limiting the circuit current reduces the element temperature and returns the device to its original resistance value. A vehicle connector connected to a vehicle electrical circuit connected to an in-vehicle electrical component,
Or
A vehicle connector connected to a vehicle electrical circuit connected to a vehicle-mounted electrical component while being installed in a circuit in the connector with a polyswitch circuit breaker,
Or
A vehicle connector connected to a vehicle electrical circuit connected to a vehicle-mounted electrical component, with a variable resistor installed in a circuit in the connector,
And comprising.

According to the present invention, it is not necessary to replace the fuse, and an arbitrary location can be selected as the installation location of the vehicle connector.
The number and the length of the wire harnesses constituting the vehicle electric circuit can be reduced.
Furthermore, the resistance value of the circuit can be adjusted without extending the wire length of the wire harness constituting the vehicle electric circuit.

It is a perspective view of the connector for vehicles. It is a circuit diagram of a variable resistor. It is a circuit diagram of a polyswitch circuit breaker. It is a perspective view showing the concept of the operation state of the connector for vehicles. It is a conceptual diagram showing the installation state of the wire harness which concerns on the electric circuit for vehicles around a driver's seat. It is an electric circuit diagram for vehicles of a conventional example. It is a conceptual diagram showing the installation state of the wire harness which concerns on the electric circuit for vehicles of a prior art example. It is an electric circuit diagram for vehicles of other conventional examples.

One embodiment will be described with reference to FIGS.
Reference numeral 11 denotes a vehicle connector. The vehicle connector 11 is a distributed junction box connector. In the circuit of the vehicle connector 11 inside the vehicle connector 11, a polyswitch breaker 12 comprising the polyswitch illustrated in FIG. 1 and the circuit is connected. When the device temperature rises above a certain temperature due to overcurrent or overheating, the polyswitch suddenly increases the resistance value to limit the circuit current slightly, and by turning the power off once, the device temperature decreases, It is a device that returns to its original resistance value.
Instead of the polyswitch breaker 12, the variable resistor 13 shown in FIGS. 1 and 2 may be attached inside the vehicle connector 11.

Since the vehicle connector 11 has a connector shape, an engine control unit (ECU) 14, other smart ECU (not shown), a computer box in general (not shown), a wire to It is inserted into the wire connector 15 or the junction connector 16.
A commercially available general-purpose connector 21 terminal is inserted and fitted into the B end of the vehicle connector 11.

  In FIG. 5, which is a conceptual diagram showing the installation state of the wire harness related to the electric circuit 31 for a vehicle around the driver's seat, 31 is a wire harness. The wire harness 31 is installed around a driver's seat that is an electric circuit for a vehicle. Reference numeral 32 denotes an ignition switch, and 33 denotes a wiper switch, which is connected to the vehicle electric circuit, that is, the wire harness 31. The vehicle connector 11 is connected in the electric circuit of the wire harness 31. A fuse is not attached to the vehicle connector 11. When the fuse is connected, it is necessary to replace the fuse when it is blown. Therefore, it is difficult to replace the fuse when it is installed in a place where it cannot be easily replaced. Is no longer necessary. Therefore, the installation location of the vehicle connector 11 is not limited to around the driver's seat, which is often installed due to workability in the case of a fuse, and can be installed at any location in the vehicle such as a rear seat.

When an abnormal current flows in the vehicular electrical circuit 31, when the element temperature rises above a certain temperature due to overcurrent or overheating, the resistance value increases abruptly, and the circuit current is limited to a slight level. . Therefore, the polyswitch breaker 12 blocks the current flowing through the vehicle electrical circuit 31. When the power is turned off after the shut-off, the element temperature decreases, and when it returns to the normal current value, the polyswitch breaker 12 returns to the original resistance value, and the polyswitch breaker 12 returns to the original circuit state. Return.
Even when the variable resistor 13 is installed in place of the polyswitch breaker 12, it has a fuse function, but a device having a fuse function other than that may be connected.

Since the vehicular connector 11 has a fuse function, it is not necessary to install a fuse in the vehicular electrical circuit 31, so that the fuse replacement work is unnecessary and the junction box is not required, thereby reducing the weight.
Since the vehicle connector 11 gains resistance, the wire length of the harness can be omitted, and the resistance value of the circuit can be adjusted without extending the wire length of the wire harness 31 as well as the blocking function.
It is possible to make the wires thinner and to prevent the joint box from being enlarged by compactly incorporating a part having a blocking function by a fuse or a circuit distributing function by a bus bar inside the vehicle connector 11. It becomes.

Since the connector itself may be improved with a commercially available product, the cost can be reduced.
Since it has a connector shape, it is possible to use a junction connector 16 in addition to a wire-to-wire connector 15 as shown in FIG. By connecting to the junction connector 16, it has the function equivalent to a junction box, and can reduce mass compared with a junction box.

DESCRIPTION OF SYMBOLS 11 Vehicle connector 12 Poly switch circuit breaker 13 Variable resistor 31 Electric circuit for vehicles

Claims (3)

  When the element temperature rises above a certain temperature due to overcurrent or overheating, the resistance value increases, limiting the circuit current, and limiting the circuit current reduces the element temperature and returns the device to its original resistance value. A vehicle connector that is installed in a circuit in the vehicle and that is connected to an electric circuit for a vehicle connected to an in-vehicle electrical component   A vehicle connector connected to a vehicle electrical circuit connected to a vehicle-mounted electrical component while the polyswitch breaker is installed in a circuit in the connector.   A vehicle connector connected to an electric circuit for a vehicle connected to a vehicle-mounted electrical component while the variable resistor is installed in a circuit in the connector.

Images