JPH0240876A - Feeding circuit of electrical equipment - Google Patents

Abstract

PURPOSE:To prevent a fault by poor continuity by forming a feeding circuit for important protection parts of vehicle of a main circuit, and forming a feeding circuit for other important protection parts which is independent from the main circuit of a sub circuit. CONSTITUTION:A connecting device 15 for electrically connecting a main circuit 3 constituting a feeding circuit of important protection parts with a sub circuit 5 constituting a feeding circuit of other important protection parts which is independent from the main circuit 3 is provided. The connecting device 15 is provided with a connection regulating member 25 for displacing the connection terminal 16 of the main circuit 3 from connection regulating state to the connection permitting state to the connection terminal 17 of the sub circuit 5, according to the connection operation of connecting the connection terminal 16 at a proper estate. Thus, it can be easily and certainly judged whether the main circuit 3 is electrically connected or not without providing a particular inspection device or inspection circuit. Hence, a fault by poor connection can be prevented.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an electrical equipment exclusively for vehicles, which is equipped with a connection device to which connection parts of a plurality of circuits each consisting of a main circuit and a replica circuit are electrically connected. This relates to the power supply circuit of the product.

[Conventional technology]

Conventionally, as shown in, for example, χ Open/Close Publication No. 61-71556, an air pack installed in a steering wheel or the like, a sensor that detects a vehicle collision, and an inflator that inflates an air bag in response to a detection signal from this sensor are used. 1. When a vehicle crashes, the current supplied from the battery ignites the inverter and inflates the airbag.In important safety components such as the air pack device, check whether there is a failure in the sensor or inflator, etc. It is necessary to constantly detect whether or not the connection state of the connection device that connects the airbag device and the power supply is proper. In addition, it is necessary to provide a detection circuit or the like to constantly or periodically detect the suitability of the connection state during use, which results in complicated wiring and increased manufacturing costs.

The present invention has been made to solve the above-mentioned problems, and it is possible to ensure that the connection state of the connection device that connects important safety components such as airbags and power sources etc. is correct without providing a separate detection circuit. The present invention provides a power supply circuit for 74 components that can appropriately determine whether or not there are 74 components at the time of completion of manufacture and at the time of use.

(Means for Solving the Problems) The chair B-memoto I atmosphere is equipped with a connecting device that electrically connects a plurality of circuits each consisting of a main circuit and a sub-circuit,
This connection device is equipped with a connection restriction member that shifts from a connection restriction state to a connection permission state for the connection terminal of the sub circuit in response to a connection operation that connects the connection terminal of the main circuit in the proper state. A power supply circuit in which the main circuit constitutes a power supply circuit for important safety components of vehicles, etc., and the subcircuit constitutes a supply circuit for other important safety components independent of the main circuit. It is.

(Function) According to the above configuration, when the main circuit in the connection device is not properly connected, the connection restriction member restricts the connection of the sub-circuit.

For this reason, the suitability of the connection state of the main circuit that serves as the power supply circuit for important safety components such as airbag devices determines the suitability of the connection state of the subcircuit that serves as the power supply circuit for other important safety components such as horn devices. Therefore, they are determined at the same time.

〔Example〕

FIG. 1 shows an embodiment of a power supply circuit for electrical equipment according to the present invention. This power supply circuit is a main circuit 3 that connects the airbag device 1, which is an important safety component of the vehicle, and the power supply 2.
and a subcircuit 5 that connects a horn device 4 that generates an alarm sound and a power source 2.

The airbag device 2 includes an inflator 6 (not shown) that inflates an airbag, a dash sensor 7 for detecting a collision provided on a dash panel, etc., and a front sensor 8 provided on a front sensor or the like. When the dash sensor 7 and the front sensor 8 are turned on at the same time, current flows from the power source 2 to the inflator 6 and the inflator 6 is ignited, thereby inflating the airbag. There is. In addition, the main circuit 3 has an airbag'! i+'l detects a failure in Afm1 and stops the operation of the airbag device 1 when the failure occurs
A fIl unit 9 is installed. This control unit 9 is activated in response to the operation of an ignition switch 10, and is configured to detect malfunctions in the inflator 6, dash sensor 7, and front sensor 8, respectively, in response to detection signals supplied from monitor lines 11, 12, and 13. It is composed of

The sub-circuit 5 supplies current from the electric current rA2 to the horn device 4 in response to the operation of the horn main f-14. A connecting device 15 is installed which connects the connecting terminals 16 of the main circuit 3 and the sub-circuit 5 to each other, as shown in FIGS. 2 and 3. Bonding terminal 17 and both bonding terminals 1
6 and 17 are respectively inserted into the connector housing 18
It consists of The upper part of this connector housing 18 has a recess 19 into which the connecting terminal 16 of the main circuit 3 is inserted.
is formed on the bottom wall of this recess 19.
A joining protrusion 21 is provided in a protruding manner to be fitted into a joining hole 20 formed at the distal end of the joint member 6 . Further, a recess 22 into which the joining terminal 17 of the sub-circuit 5 is inserted is formed in the lower part of the connector housing 18, and a joining hole 23 formed at the tip of the joining terminal 17 is formed in the bottom wall of this recess 22. A joining protrusion 24 is formed to be fitted therein.

Further, in the connector housing 18, the connecting terminal 17 of the sub-circuit 5 is inserted into the lower recess 22 when the connecting terminal 16 of the main circuit 3 is not properly inserted into the upper recess 19. A connection regulating member 25 is installed to regulate the connection. The connection regulating member 25 is made of a plate material that is swingably supported on the side wall of the connector housing 18 by a rotating shaft 26, and has an attachment such as a torsion coil spring (not shown) fitted onto the rotating ring 26. Fishing club (
According to 4, under normal conditions, the tip of the recess 22 is downward.
When located inside, the rear end portion is biased so as to be in a bonding restricted state located within the upper recess 19. As shown in FIG. 4, when the connecting terminal 16 of the main circuit 3 is properly inserted into the upward recess 19 of the connector housing 18, the connection regulating member 25 is inserted as shown in FIG. The connection regulating member 25 is rotationally displaced when its rear end is pushed by the joining terminal 16, and the connecting terminal 17 of the sub-circuit 5 is inserted into the lower recess 22 to enter a connection permissible state. There is.

In this way, the main circuit 3 constitutes the power supply circuit for important safety components such as the air bag device 1, and the main circuit 3 constitutes the power supply circuit for other important safety components consisting of the horn device 4, which is independent from the main circuit 3. A connecting device 15 is provided to which the connecting terminals 17 and 5 of the sub-circuit 5 are electrically connected, respectively, and the connecting terminal 17 of the sub-circuit 5 is connected to the connecting device 15 in accordance with a connecting operation for connecting the connecting end F-16 of the main circuit 3 in a proper state. Since the connection regulating member 25 is provided, it is possible to easily check whether or not the main circuit 3 is electrically connected to the connecting device 15 without providing a special inspection device or inspection circuit. and can be reliably determined.

That is, as shown in FIG. 3, the connecting terminal 16 of the main circuit 3 is not inserted into the recess 19 above the connector housing 18, or as shown in FIG. If the bonding state is incomplete, the tip of the bonding regulating member 25 is located within the lower four parts 22, and this bonding regulating member 2
5 prevents the connection terminal 17 of the sub-circuit 3 from being inserted into the lower recess 22, so that a connection failure in the main circuit 3 can be immediately determined. Also, if you leave the wiring in this state and finish the wiring work,
A connection failure between the main circuit 3 and the sub-circuit 5 is detected at the same time by an operation test of the horn device 4 performed at the time of completion of the product.

In addition, if the connection terminals 16 and 17 are in a proper connection state at the time of completion of the product, but then the connection terminals 16 and 17 become defective, the horn device 4 will not be able to operate. As a result, the occurrence of a connection failure in the main circuit 5 is detected in the middle of the process, and this can be solved and corrected in advance. Therefore, the function of the airbag device 1 is to maintain the connection state of the main circuit 3 in a proper state at all times and to operate the inflation valve 6 of the airbag device 1 when the vehicle rains (15) to ensure the safety of the passenger. can be demonstrated reliably.

In the above embodiment, a case has been described in which the main circuit 3 constitutes a power supply circuit for one abutment device 1. However, the main circuit 3 is not limited to this, and can be used for various important security matters related to passenger safety, etc. It can be used as a power supply circuit for components. Furthermore, the sub-circuit 5 is not limited to the commercial circuit for the horn device 4, but is another safety-required component independent of the main circuit 3, and is capable of checking its operating state upon completion of manufacturing the headlight device, etc. It can be applied as a power supply circuit for divine electrical equipment whose quality is always inspected and where it can be easily determined whether the conduction state has become defective during operation.

〔Effect of the invention〕

As explained above, the present invention provides a connection device that electrically connects a plurality of circuits each consisting of a main circuit and a sub-circuit with a connection regulating member that regulates the connection of the joining terminals of the sub-circuits. A power supply circuit for important safety components of vehicles, etc., configured to displace the connection restriction member from a connection restriction state to a connection permission state in response to a connection operation to connect the joint terminals of the main circuit in a proper state, and the main circuit is configured to displace the connection restriction member from a connection restriction state to a connection permission state. At the same time, the subcircuit constitutes a power supply circuit for other important safety components that is independent of the above main circuit. Therefore, the connection state of the main circuit can be determined by determining the suitability of the connection state of the above subcircuit. At the same time, it is possible to determine whether or not the

Therefore, it is not necessary to inspect the connection state of the main circuit using a special inspection device after manufacturing is completed, or to provide a separate test circuit for detecting the connection state of the main circuit during use. This has the advantage of being able to accurately and quickly determine the conduction state of the main circuit and prevent failures due to poor conduction.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the power supply circuit for electrical equipment according to the present invention, Fig. 2 is a perspective view showing the configuration of the connecting device installed in the above power supply circuit, and Fig. 3 is the above-mentioned FIG. 4 is a cross-sectional view showing the configuration of the connecting device, FIG. 4 is a cross-sectional view showing the proper connection state of the joint terminals of the main circuit, and FIG. 5 is a cross-sectional view showing the poor connection state of the joint end f of the main circuit. 1... Airbag device (important safety part), 3... Main circuit, 4... Horn device (If!!/M safety part), 5... Rib circuit, 15... Connection yL installed, 1
6... Connection terminal for main circuit, 17... Connection terminal for rib circuit, 25... Connection regulating member.

Claims (1)

[Claims] 1. A connecting device is provided that electrically connects a plurality of circuits each consisting of a main circuit and a sub-circuit, and the connecting terminal of the main circuit is connected to this connecting device in an appropriate state according to a connecting operation. A power supply circuit for an electrical component that is provided with a connection restriction member that changes from a connection restriction state to a connection permissible state for a connection terminal of a sub-circuit, and the main circuit constitutes a power supply circuit for important safety components such as a vehicle. A power supply circuit for electrical equipment, characterized in that the subcircuit constitutes a power supply circuit for other important safety components independent of the main circuit.