JP2002343506A - Power circuit disconnecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power circuit disconnecting device which electrically detects the fitting of connector housings, and connects the power circuit only when the fitting is detected. SOLUTION: The power circuit disconnecting device comprises a power source terminal 22, a connector housing 21 having a fitting detection terminal 23, a connector housing 40 made to freely fit to.separate from the connector 21, having a power source terminal 41 contacting the power source terminal 22 when fitted, and a fitting detection body 60 sliding freely held on the connector housing 40, made to freely fit to.separate from the fitting detection terminal of the connector housing 21, and made to freely touch with.separate from the fitting detection terminal 23. The power circuit is connected when the fitting detection terminal 23 of the connector housing 21 and a fitting detection terminal 61 of the fitting detection body 60 are connected to each other, and disconnected when the fitting detection terminals 23, 61 are separated from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply circuit disconnecting device for connecting and disconnecting a power supply circuit by fitting / removing one connector housing to / from another connector housing.

[0002]

2. Description of the Related Art Inspection and repair of an electric system of a device using a large capacity battery as a power source, such as an electric vehicle, has conventionally been carried out by shutting off a power supply circuit in order to ensure worker safety. Therefore, many means for safely and easily shutting off the power supply circuit have been proposed.

For example, there is a connector disclosed in Japanese Patent Application Laid-Open No. 9-219255 shown in FIG. 23 as a connector having a connector housing coupling structure applicable to this type of power supply circuit interrupting device. The connector 1 is a double lock connector, and includes a male connector housing 2, a mating female connector housing 13, and a fitting detection member 3.

A fitting detecting member 3 is slidably provided in the operating portion 9 of the flexible lock arm 6 of the male connector housing 2 in the connector fitting direction, and the fitting detecting arm 4 of the fitting detecting member 3 is locked. The projection 11 can be slidably engaged with the lock portion 8 of the flexible lock arm 6. This flexible lock arm 6
The male connector housing 2 is provided with an abutting projection 5 for the flexible detection arm 4 locked inside the flexible space 7 to prevent the flexible lock arm 6 from bending. Further, when the flexible detection arm 4 is locked, the operation plate 10
Cover the front end 12 of the mating female connector housing 13.

In this double lock connector fitting detection structure, the bending of the flexible lock arm 6 of the male connector housing 2 is prevented by the fitting detection member 3 and the male connector housing 2
Is prevented from coming off unexpectedly.

[0006]

However, in the conventional connector 1, since the fitting detection is only performed mechanically, this fitting detecting structure is provided with a power supply circuit for interrupting a high-voltage / high-current power supply circuit. If applied to the shut-off device as it is,
Arc discharge may occur when the two connector housings are separated.

In view of the above, the present invention has been made to solve the above-described problem, and it is possible to electrically detect the engagement of both connector housings and connect the power supply circuit only when the engagement is detected. It is an object of the present invention to provide a power supply circuit shut-off device capable of preventing accidental disengagement and disconnection of both connector housings and occurrence of arc discharge at the time of disengagement.

[0008]

According to a first aspect of the present invention, there is provided a connector housing having a power supply terminal and a fitting detection terminal, and a connector housing which is capable of being fitted to and detached from the connector housing. Another connector housing having a power terminal that contacts the power terminal of one connector;
The other connector housing is slidably supported, and when the two connector housings are fitted together, the one connector housing is made to be able to be fitted and disengaged from the fitting detection terminal side so that the fitting detection is performed. Detecting member having a fitting detecting terminal which can be freely contacted and non-contacted with the terminal for connection, and a power supply circuit is provided when the one connector housing and the fitting detecting terminal of the fitting detecting member come into contact with each other. And a power supply circuit shut-off device which cuts off the power supply circuit when the two fitting detection terminals are not in contact with each other.

In this power supply circuit shut-off device, when the two connector housings are detached from each other, the power supply circuit is interrupted only after one of the connector housings and each of the fitting detection terminals of the fitting detection body are separated. A state in which a voltage is applied to the power supply circuit when the power supply terminals of the connector housing are detached does not occur, and no arc discharge occurs between the power supply terminals.

According to a second aspect of the present invention, in the power supply circuit shut-off device according to the first aspect, locking portions for locking the fitted state of the two connector housings are provided on the both connector housings, respectively. A power supply circuit shut-off device characterized in that a release operation portion for releasing the locked state of the power supply circuit can be covered by the fitting detection body when the fitting detection body is fitted.

In this power supply circuit shut-off device, the fitting detecting body covers the releasing operation portion of the locking portion when the two connector housings are fitted, so that the accidental disengagement of the two connector housings is prevented.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 7, a power supply circuit breaker 20 includes a connector housing 21 having a power supply terminal 22 and a fitting detection terminal 23, and a connector housing 21 fitted with the connector housing 21. The other connector housing 40 having a power terminal 41 which is detachable and comes into contact with the power terminal 22 of the one connector housing 21 at the time of fitting, and is slidably supported by the other connector housing 40. At the same time, when the two connector housings 21 and 40 are fitted together, the fitting is detachably fitted to and detached from the fitting detecting terminal 23 of one of the connector housings 21, and the fitting is made contactable and non-contactable with the fitting detecting terminal 23. And a fitting detection body 60 having a matching detection terminal 61.

As shown in FIGS. 1 and 4 (a) and 4 (b), one connector housing 21 has an open upper surface,
A substantially box-shaped peripheral wall 31 of which the front center is recessed inward and a substantially U-shaped connector housing accommodating chamber 28 surrounded by the peripheral wall 31 and the bottom wall portion 32 are formed in a substantially box shape. is there. A power supply terminal accommodating portion 26 is protruded substantially at the center of the bottom wall portion 32, and a fitting detection terminal accommodating portion 27 is protruded on the right front side of the bottom wall portion 32. Power supply terminal housing 2
6, a pair of power supply wirings 24, 24 extending from the power supply circuit 80 shown in FIG. 22 and a pair of power supply terminals 22, 22 provided at the ends of the power supply wirings 24 are provided. Have been. A pair of fitting detection wirings 25, 25 extended from a relay circuit 83 that controls the power supply circuit 80, and each of the fitting detection wirings 2
5, a pair of fitting detection terminals 23, 23
Are arranged.

When the other connector housing 40 and the mating detecting body 60 are inserted into the connector housing accommodating chamber 28, the other connector housing 40 to be described later is fitted to the inner wall of the recessed portion inside the peripheral wall 31. A locking portion 30 that fits and locks with the locking portion 48 is provided.

The bottom wall portion 32 has a locking portion 29 that engages with the fitting detection body 60 when the other connector housing 40 and the fitting detection body 60 are inserted into the connector housing accommodating chamber 28. , Are provided integrally toward the opening on the upper surface side.

As shown in FIGS. 4A, 4B and 5, one connector housing 21 is fixed at a desired mounting position by a support bolt 34 inserted into a bolt insertion hole 33.

As shown in FIGS. 1 to 7, the other connector housing 40 has a substantially box shape with upper and lower sides opened, and a fuse accommodating chamber 53 is provided in an opening on the upper side.
In the fuse accommodating chamber 53, cylindrical fuses 51 are fixed at both ends with bolts 52. The opening of the normal fuse storage chamber 53 is closed by a cover 54 so that the cover 54 can be removed when the fuse 51 is inspected or replaced.

A power supply terminal receiving chamber 42 is provided in an opening on the lower surface side of the other connector housing 40, and a pair of power supply terminals 41, 41 are provided substantially in the center of the power supply terminal receiving chamber 42. It is projected. Each of the power supply terminals 41 is connected to each of the terminals of the fuse 51. Further, the power supply terminal accommodating chamber 42 is fitted with the power supply terminal accommodating chamber 42 when the connector housings 21 and 40 are fitted, so that the power supply terminals 22 and 41 come into contact with each other.

Also, as shown in FIGS.
Reference numeral 0 includes two housings 70 and 71 whose lower surfaces are open, and an operation plate 69 that connects the upper surfaces of these housings 70 and 71. The one housing 71 is disposed at a position facing the fitting detection terminal accommodating portion 27 of the one connector housing 21, and the one housing 71 has a fitting detection terminal formed of a U-shaped bus bar. 61 are buried. Then, when the fitting detection body 60 is fitted into the one connector housing 21, the fitting detection terminals 23 of the fitting detection terminal receiving chamber 27 and the respective fitting detection terminals 61 come into contact with each other. ing.

As shown in FIGS. 1 to 7, the other connector housing 40 is used in combination with the fitting detecting body 60 so that the connector housing accommodating chamber 2 of the one connector housing 21 is provided.
8. On the other connector housing 40 side of the mating surface of the other connector housing 40 and the fitting detection body 60, a fitting locking portion 48 and a release operation portion 47 are provided, and fit with one connector housing 21. At this time, the locking portion 30 and the fitting locking portion 48 are engaged. The locking portion 30 and the fitting locking portion 48
In order to release the engagement, the release operation section 47 can be operated to release the engagement.

On the other connector housing 40 side of the mating surface of the other connector housing 40 and the fitting detection body 60, a pair of slide rails 43, 43, a slide locking portion 44, and a locking projection are provided. 45 and a stopper 46 are provided. Further, a locking member 63, a locking projection 68, and a stopper 67 are provided on the fitting detection body 60 side of the mating surface between the other connector housing 40 and the fitting detection body 60.

When the other connector housing 40 and the fitting detecting body 60 are combined and the fitting detecting body 60 is slid in the vertical direction, when the sliding is performed in the upward direction, the stoppers 46 and 67 interfere with each other, and the fitting detecting is performed. The movement of the body 60 is prevented.

When the fitting detecting body 60 is slid downward, the locking projection 45 and the first locking portion of the locking member 63 interfere with each other, so that the fitting detecting body 60 is prevented from moving. ing. Therefore, in a state where the other connector housing 40 and the fitting detection body 60 are combined, the fitting detection body 6
0 cannot be slid up and down, and the fitting detection body 60 is held at the fitting start position.

Before the fitting detector 60 slides down with respect to the other connector housing 40, the fitting detector 60 is provided on the other connector housing 40 as shown in FIG. The first locking portion 65 of the locking member 63 and the locking projection 45 provided on the other connector housing engage to prevent the fitting detector 60 from sliding downward. .

As shown in FIG. 8, the locking member 63 of the fitting detection body 60 includes a first locking portion 65, a second locking portion 66, and an arm portion 64, and the engagement of the other connector housing 40 is performed. The stop projection 45 engages with the first locking portion 65, and further,
The stopper 67 of the fitting detection body 60 and the stopper 46 provided on the other connector housing 40 interfere with each other, and FIG.
Cannot be pulled out upward.
Therefore, when the two connector housings are separated from each other, the fitting detection body 60 cannot be slid in the vertical direction, and is held at the fitting start position.

The first locking portion 65 of the two locking portions 65 and 66 provided at the lower end of the arm portion 64 is connected to the other connector housing 40 in a state where both connector housings 21 and 40 are detached. The fitting detection body 60 is held at the fitting start position by interfering with the provided locking projection 45. The second locking portion 66 contacts the locking portion 29 protruding from the one connector housing 21 in a state where the other connector housing 40 is fitted to the one connector housing 21, and has a flexible arm. The portion 64 flexes. Thereby, the engagement between the first locking portion 65 of the fitting detection body 60 and the locking projection 45 of the other connector housing 40 is released, and the fitting detection body 6 is released.
0 can slide freely along the slide rail portion 43.

As shown in FIGS. 9 to 14, the two connector housings 21 and 40 are detached from each other, and the other connector housing 40 is fitted into the connector housing accommodating chamber 28 provided in the one connector housing 21. When the power supply terminals 22 and 41 of the housings 21 and 40 are in contact with each other, the locking member 63 of the fitting detection body 60
The second locking portion 66 and the locking portion 29 interfere with each other. However, since the surface of the second locking portion 66 that interferes with the locking portion 29 is a slope, the arm portion 64 is bent, and the second locking portion 66 is bent. 66 can be slidably slid on the locking portion 29.

As shown in FIG. 22, a power supply circuit 80 includes a load section 82 and a power supply section 81 for supplying power to the load section 82.
The power supply circuit breaker 20 and the relay circuit 83 of the present embodiment are connected in series between the load section 82 and the power supply section 81.

The relay circuit 83 is provided with two mating detection terminals 2.
3 and 61 are turned on at the time of connection, and both fitting detection terminals 23,
It is turned off when 61 is not connected. In addition, the power supply terminal 22,
Since the system main relay 83 is turned on by connecting the fitting detection terminals 23 and 61 after the connection of 41, it is shown that arc discharge does not occur at the power supply terminals 22 and 41. I have.

According to the power supply circuit shut-off device 20 configured as described above, when the two connector housings 21 and 40 are separated from each other as shown in FIGS. 40 and 40 can be separated. As shown in FIG. 7, when both connector housings 21 and 40 are detached, both power supply terminals 22 and 41 and both fitting detection terminals 23 and 61 are shut off. Even if the two connector housings 21 and 40 are fitted and disengaged in this state, the two power supply terminals 22 and
No arc discharge occurs between 41.

Further, when checking and replacing the fuse 51, the other connector housing 40 is detached from the one connector housing 21 before the operation.
Since the fuse storage chamber 53 is separated from the power supply circuit,
Inspection and replacement work of the fuse 51 can be performed safely.

When the other connector housing 40 is fitted into the connector housing accommodating chamber 28 provided in the one connector housing 21 from the state where the two connector housings 21 and 40 are detached as shown in FIGS. Power supply terminals 22, 41 of housings 21, 40
Contact each other.

At this time, as shown in FIG. 14, the two connector housings 21 and 40 are fitted. However, since the fitting detection body 60 is located above the other connector housing 40, one connector housing The fitting detection terminals 23 and 61 of the housing 21 and the fitting detection body 60 are separated (the fitting detection switch SW including both the fitting detection terminals 23 and 61 is turned off), and the power supply circuit 80 is shut off. Therefore,
Even if the two connector housings 21 and 40 are fitted / removed in this state, no arc discharge occurs between the two power supply terminals 22 and 41.

As shown in FIG. 16, when the power supply terminals 22 and 41 of the connector housings 21 and 40 are in contact with each other, the fitting detection body 60 is slid along the slide rail 43 to detect the fitting. When the body 60 is fitted in the connector housing accommodating chamber 28 of the one connector housing 21, the second locking portion 66 is engaged with the locking portion 29 and is held at the fitting completed position. As a result, as shown in FIG. 20, the two fitting detection terminals 23 and 61 come into contact with each other (the fitting detection switch S
W is turned on), and a voltage is applied to the power supply circuit 80. At this time, since the power supply terminals 22 and 41 have already contacted,
No arc discharge occurs.

Further, as shown in FIG.
Is held at the mating completion position, the release operation portion 47 for disengaging the connector housings 21 and 40 cannot be operated by the mating detecting body 60. Connector housing 21
Of the other connector housing 40 from the connector housing accommodating chamber 28, that is, disengagement.

In the present embodiment, the other connector housing and the fitting detection body have a shape that can be separated separately. However, even if they are an integral shape that cannot be separated, an arc discharge occurs when fitting and disengaging the connector housing. Can be prevented from occurring. Also, after the mating is completed, the upper surface of the other connector housing is covered with the operation plate of the mating detection body, and even if the operation release portion is not accessible, the connector housing can be prevented from falling off due to unnecessary operation. it can.

That is, a structure is provided in which the power supply circuit is connected when both the fitting detection terminals of the connector housing and the fitting detection body are in contact, and the power supply circuit is cut off when the two fitting detection terminals are not in contact. The two connector housings are provided with both locking portions for holding the fitted state of the two connector housings, respectively, and a release operation portion for releasing the engaged state of the both locking portions is fitted when the fitting detection body is fitted. The invention is not limited to the above-described embodiment as long as it has a structure that can be covered by the detector.

[0039]

As described above, according to the first aspect of the present invention, when the two connector housings are detached, the power supply circuit is shut off after the fitting detection switch is turned off without fail. Thus, a state in which a voltage is applied does not occur, and it is possible to prevent the occurrence of arc discharge when each power supply terminal of both connector housings is detached.

According to the second aspect of the present invention, at the time of fitting of the fitting detecting body, since the fitting detecting body covers the releasing operation portion of the locking portion of the connector housing, the two connector housings are unexpectedly fitted. Detachment can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a power supply circuit disconnecting device of an embodiment of the present invention is connected to a power supply circuit.

FIG. 2 is a front view showing a cut-off state in which the power supply circuit cut-off device of the present embodiment cuts off the power supply circuit and does not detect the fitting, so that no current flows in the power supply circuit.

FIG. 3 is a side view showing a cut-off state in which the power supply circuit cut-off device of the present embodiment cuts off the power supply circuit and does not detect a fitting, so that no current flows in the power supply circuit.

FIG. 4A is a top view of one connector housing of the power supply circuit breaker of the present embodiment, and FIG. 4B is a top view of the other connector housing of the power supply circuit breaker of the present embodiment.

FIG. 5 shows a power supply circuit device of the present embodiment,
It is sectional drawing which follows the A line.

FIG. 6 shows a power supply circuit device of the present embodiment,
It is sectional drawing which follows the B line.

FIG. 7 shows a power supply circuit device of the present embodiment,
It is sectional drawing which follows the C line.

FIG. 8 is a perspective view of a locking member provided on the fitting detection member of the present embodiment.

FIG. 9 is a front view showing a semi-connected state in which no current flows in the power supply circuit because the power supply circuit cutoff device of the present embodiment has connected the power supply circuit but has not performed fitting detection.

FIG. 10 is a side view showing a semi-connected state in which no current flows in the power supply circuit because the power supply circuit breaker of the present embodiment has connected the power supply circuit but has not performed fitting detection.

FIG. 11 is a top view showing a semi-connected state in which no current flows in the power supply circuit because the power supply circuit breaker of the present embodiment has connected the power supply circuit but has not performed fitting detection.

FIG. 12 is a cross-sectional view of the power supply circuit device according to the present embodiment, taken along line AA of FIG. 11;

FIG. 13 is a sectional view of the power supply circuit device according to the present embodiment, taken along line BB of FIG. 11;

FIG. 14 is a cross-sectional view of the power supply circuit device according to the present embodiment, taken along line CC of FIG. 11;

FIG. 15 is a plan view showing a connection completed state in which the power supply circuit disconnecting device of the present embodiment connects the power supply circuit, performs fitting detection, and allows current to flow through the power supply circuit.

FIG. 16 is a side view showing a connection completed state in which the power supply circuit disconnecting device of the present embodiment connects the power supply circuit, performs fitting detection, and allows current to flow through the power supply circuit.

FIG. 17 is a top view showing a connection completed state in which the power supply circuit disconnecting device of the present embodiment connects the power supply circuit, performs fitting detection, and allows current to flow through the power supply circuit.

FIG. 18 is a cross-sectional view of the power supply circuit device according to the present embodiment, taken along line AA of FIG. 17;

19 shows the power supply circuit device of the present embodiment, and is a cross-sectional view along the line BB of FIG.

FIG. 20 is a cross-sectional view of the power supply circuit device according to the present embodiment, taken along line CC of FIG. 17;

21 is a cross-sectional view of the power supply circuit device according to the present embodiment, taken along line DD in FIG. 17;

FIG. 22 is a schematic circuit diagram of a power supply circuit in which the power supply circuit breaker of the present embodiment is introduced.

FIG. 23 is a cross-sectional view showing an embodiment of the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 Power supply circuit interrupter 21 One connector housing 22 Power supply terminal 23 Fitting detection terminal 40 The other connector housing 41 Power supply terminal 60 Fitting detection body 61 Fitting detection terminal

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Satoru Satoru 206-1 Nunobikihara, Haibara-cho, Haibara-gun, Shizuoka Prefecture Inside Yazaki Parts Co., Ltd. Parts Co., Ltd. F-term (reference) 5E021 FA03 FA09 FA14 FA16 FB07 FB20 FB21 FC14 FC31 FC36 FC38 HA07 HC11 JA05 KA08 KA15 MA25 MB20

Claims (2)

[Claims] 1. A connector housing having a power supply terminal and a fitting detection terminal, which is fitted and detachable from the connector housing, and comes into contact with the power supply terminal of the one connector housing at the time of fitting. A second connector housing having a power supply terminal, slidably supported by the other connector housing, and fitted to the fitting detection terminal side of the one connector housing when the two connector housings are fitted to each other; A mating detector having a mating detection terminal which is made to be able to be fitted and disengaged and is made to be able to contact and non-contact with the mating detection terminal, wherein the one connector housing and the mating detection body A power supply circuit is connected when the two mating detection terminals are in contact with each other, and the power supply circuit is cut off when the two mating detection terminals are not in contact with each other. Power source circuit breaker. 2. The power supply circuit shut-off device according to claim 1, wherein a locking portion for locking the fitted state of the two connector housings is provided on each of the two connector housings, and the locking state of each locking portion is determined. A power supply circuit shut-off device, characterized in that a release operation portion to be released is freely covered by the fitting detection body when the fitting detection body is fitted.