JP2000164079A - Breaker device - Google Patents

Abstract

(57) [Problem] To provide a breaker device that can open and close two electric lines with a single operation and can be downsized. SOLUTION: A fixed electrode 20 provided in a breaker device 10
The movable electrode 30 and the movable electrode 30 each have a double structure including electrodes disposed inside and outside, and the movable electrode 30 is connected to a conductive position inserted between the fixed electrodes 20 and 20 by a switch operation and to one of the fixed electrodes. To the non-conducting position unevenly distributed on the side, and is connected to the fixed electrode 20 by the two systems of electric circuits C1 and C2.
Is opened and closed. As described above, since the electrodes for opening and closing the two systems of the electric circuits C1 and C2 have a double structure, it is only necessary to slightly increase the space for accommodating the electrodes of only one system in the radial direction over the entire circumference. In addition, the size becomes smaller as compared to a breaker device in which electrodes for two systems are arranged side by side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a breaker device.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a conventional breaker device disclosed in Japanese Patent Application Laid-Open No. 10-172386. This breaker device is provided with a pair of fixed electrodes 3 and 3 fixed to both ends of a case 2, and extends so that they are close to each other, and is slidably fitted to the fixed electrode 3. By rotating the lever 5, the lever 4 can be moved to a conducting position between the fixed electrodes 3 and 3 and a non-conducting position unevenly distributed on one fixed electrode 3 side. . As a result, the electric circuits 6, 6 connected to the fixed electrodes 3, 3 are opened and closed.

[0003]

In a high-voltage circuit of an electric vehicle, for example, as a measure for preventing electric shock during maintenance, two circuits connected to the positive and negative poles of the battery are required.
It is necessary to completely cut off the electric circuit of the system. However, if the above-mentioned conventional breaker device is used, a large space for installing two breaker devices is required in the vehicle. Further, the lever 5 must be operated for each breaker device, and the operation is troublesome. On the other hand, it is conceivable that the fixed electrode and the movable electrode for two systems are arranged side by side in one case, but the problem that the breaker device becomes large in the width direction remains.

The present invention has been made in view of the above problems, and has as its object to provide a breaker device that can open and close two electric lines with a single operation and that can be downsized.

[0005]

According to a first aspect of the present invention, a cylindrical fixed electrode fixed to both ends of a case and extending close to each other is provided. The movable electrode is slidably fitted, and the movable electrode is moved by a switch operation between a conducting position between the fixed electrodes and a non-conducting position unevenly distributed on one fixed electrode side. In the breaker device that opens and closes the electric circuit connected to the fixed electrode, each fixed electrode is formed of an inner fixed electrode and an outer fixed electrode that are extended and held in a non-conductive state with each other in a double structure, and the movable electrode is , Consisting of an inner moving electrode and an outer moving electrode held in a non-conductive state with each other in a double structure corresponding to the fixed electrode, and the inner and outer moving electrodes both move to a conductive position and a non-conductive position. To do What has a feature where the two systems of paths that are connected separately in and out of the stationary electrode is opened and closed.

According to a second aspect of the present invention, in the breaker device according to the first aspect, the inner moving electrode and the outer moving electrode are integrally connected by an insulating resin.

[0007]

According to the structure of the first aspect, the two-system electric circuit can be opened and closed by a single switch operation. In addition, since the electrodes for opening and closing the two circuits have a double structure, the space for accommodating the electrodes for only one system only needs to be slightly widened radially over the entire circumference. As compared with a breaker device provided with electrodes for two systems side by side, the size of the entire breaker device can be reduced.

According to the second aspect of the present invention, the inner moving electrode and the outer moving electrode are integrally connected by the insulating resin, so that the inner and outer moving electrodes are fixed at a time. The circuit breaker can be assembled to an electrode or the like, and the work of assembling the breaker device becomes easy.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a breaker device according to the present invention will be described below with reference to FIGS. As shown in FIG. 1, the breaker device 10 according to the present embodiment accommodates a fixed electrode 20 and a movable electrode 30 in a synthetic resin case 11 and is mounted in the middle of a two-system electric circuit. .

The two-system electric circuit includes, for example, a positive electric circuit C1 connected to a positive electrode of a battery of an electric vehicle and a negative electric circuit C2 connected to a negative electrode. A round terminal T is fixed to the terminal.

The case 11 of the breaker device 10 has a substantially rectangular parallelepiped shape that is long in the left-right direction in FIG. 1, and its open upper surface is closed by a panel 12. Both ends in the longitudinal direction of the case 11 have a lower end side projecting outward to form a two-stage platform, and for each upper and lower step, a nut N is insert-molded such that a screw hole is opened to the upper surface. Mounting bases 13A and 13B are provided. An insertion hole 14 is formed near the lower end of the stepped surface between the two mounting bases 13A and 13B.
The mounting portion 26 provided at the bottom is inserted.

At the lower four corners of the case 11, legs (not shown) through which bolts penetrate in order to fix the breaker device 10 to equipment or the like are formed to extend laterally.

The fixed electrodes 20 are provided in pairs at both ends of the case 11, are fixed to the mounting bases 13A and 13B, extend to the side close to each other, and are separated and opposed on a coaxial line. ing. These two fixed electrodes 20,
20 have the same structure except for the overall lengths, which are different from each other.

Now, each fixed electrode 20 has a double structure, and is extended while being held in a non-conductive state with each other.
1 and an outer fixed electrode 24. The inner fixed electrode 21 is, as shown in FIG.
A round bar portion 23 is extended from one side surface of this round bar portion 2.
Reference numeral 3 denotes that the fixed electrode 20 on the right side of FIG. 1 is longer than that of the fixed electrode 20 on the left side. A hole 22A is formed through the mounting portion 22. A bolt is inserted into the hole 22A, and the hole 22A is fastened together with the round terminal T fixed to the positive circuit C1 to the mounting base 13A on the upper side of the case 11. Have been.

As shown in FIG. 3, the outer fixed electrode 24 has a crank shape as a whole. More specifically, the outer fixed electrode 24 has a cylindrical portion 25 extending in parallel in alternate directions and a flat mounting portion 2.
6 is communicated by a flat connecting portion 27. The outer fixed electrode 24 is connected to the case 1 as shown in FIG.
1, the mounting portion 26 is inserted into the insertion hole 14,
At the same time, the connecting portion 27 is brought into contact with the inner surface of the case 11. A hole 26A is formed through the mounting portion 26, and a bolt is passed through the hole 26A, and the hole 26A is fastened together with the round terminal T fixed to the negative circuit C2 to the lower mounting base 13B on the lower side of the case 11.

When the inner and outer fixed electrodes 21 and 24 are fixed to the case 11 as described above, the fixed electrode 20 is maintained in a non-conductive state, and the cylindrical portion 25 of the outer fixed electrode 24 is fixed inside. The electrode 21 is arranged concentrically around the round bar portion 23. Further, the tip of the cylindrical portion 25 and the tip of the round bar portion 23 are aligned at substantially the same position (FIG. 1).
reference).

On the other hand, the moving electrode 30 has an inner moving electrode 31 and an outer moving electrode 34 which are formed in a double structure corresponding to the fixed electrode 20 and are kept in a non-conductive state. The inner moving electrode 31 has a cylindrical shape that can be fitted to the outside of the round bar portion 23 of the inner fixed electrode 21, and has louvers R on inner surfaces at both ends.
(See FIG. 1), the louver R is slidably in contact with the round bar portion 23, and a conduction position (FIG. 1) inserted between the inner fixed electrodes 21 and 21 and one inner fixed electrode 21 are provided. It is slidable between a non-conducting position (FIG. 2) unevenly distributed on the side.

The outer movable electrode 34 is connected to the outer fixed electrode 2.
4 has a cylindrical shape that can be fitted to the outside of the cylindrical portion 25 and can be loosely fitted to the inner peripheral surface of the outer fixed electrode 24, and also has louvers R on the inner surfaces at both ends.
The conductive position (FIG. 1) inserted between the outer fixed electrodes 24, 24 while slidingly contacting the inner fixed electrode 21.
It is slidable between a non-conducting position (FIG. 2) unevenly distributed on the side.

The inner moving electrode 31 and the outer moving electrode 3
4 and are connected by a connecting body 35 made of insulating resin in a state where both ends are aligned and arranged concentrically. The connecting body 35 has a through hole (not shown) penetrating the inner moving electrode 31 and the outer moving electrode 34, for example, at a position near one end of the inner moving electrode 31 and the outer moving electrode 34, and the inner moving electrode 31 and the outer moving electrode 31 are formed through the through holes. It is formed by molding an insulating resin so as to be integrally connected over the inside and outside of. A connecting shaft 36 protrudes from both sides of the outer peripheral wall of the connecting body 35, and a lever 37 described below is connected to the connecting shaft 36. Then, as shown in FIG. 1, the movable electrode 30 is rotated with the inner movable electrode 31 fitted to the inner fixed electrode 21 and the outer movable electrode 34 fitted to the outer fixed electrode 24. Is slid along the fixed electrode 20.

The lever 37 is formed of a synthetic resin, and is disposed between the upper ends of the pair of arm pieces 38, 38.
9 is handed over. And the arm pieces 38, 38
It is inserted into the case 11 through the slits 12A, 12A formed in the panel 12 and straddles the fixed electrode 20,
The rotating shaft 40 is passed through the tip, and is rotatably attached to the case 11. A long hole 38B is formed in the middle of the arm piece 38, and the connecting shaft 36 of the connecting body 35 is fitted into the long hole 38B, thereby converting the turning operation of the lever 37 into the sliding movement of the movable electrode 30. ing.

Next, the operation and effect of the breaker device 10 having the above configuration will be described. The breaker device 10 is connected to a positive circuit C1 and a negative circuit C2 connected to a battery, and is fixed inside the electric vehicle. Here, in the breaker device 10 of the present embodiment, the electrodes for opening and closing the two circuits C1 and C2 have a double structure, so that the space for accommodating only one system of electrodes is slightly reduced in the radial direction over the entire circumference. It is only necessary to spread them out one by one, and the size is smaller than that of the breaker device due to the two-system electrodes provided side by side. Thereby, the breaker device 10 of the present embodiment can be attached to a narrow space of the electric vehicle.

When the electric vehicle is maintained, the breaker device 10 is turned off. For this purpose, the lever 37 is turned to the right in FIG. Then, the inner surface of the long hole 38A formed in the lever 37 pushes the connecting shaft 36 provided in the connecting body 35 in the horizontal direction, and the connecting body 35
Inner and outer moving electrodes 31 and 34 integrated by
Move along the inner and outer fixed electrodes 21 and 24 to the right in FIG. As a result, as shown in FIG. 2, the inner and outer movable electrodes 31, 34 are separated from the inner and outer fixed electrodes 21, 24 on the left side of FIG. 2, and both electric paths C1, C2 are turned off.

When the maintenance is completed, the breaker device 1
To turn 0 on, the lever 37 is turned to the left in FIG. Then, the inner and outer movable electrodes 31 and 34 move to the left side in FIG. 1 together along the inner and outer fixed electrodes 21 and 24. As a result, as shown in FIG.
Is inserted between the inner fixed electrodes 21 and 21 to make the positive electric circuit C1 conductive, and the outer moving electrode 34 is inserted between the outer fixed electrodes 24 and 24 to form the negative electric circuit C2.
Becomes conductive.

As described above, the breaker device 10 of the present embodiment
In this case, the two circuits C1 and C2 can be opened and closed by a single switch operation, so that the opening and closing operations are facilitated. In addition, this prevents the user from forgetting to open or close one of the two electric paths C1 and C2, thereby reliably preventing electric shock.

<Other Embodiments> The present invention is not limited to the embodiments. For example, the following embodiments are also included in the technical scope of the present invention. Various changes can be made without departing from the scope of the invention.

(1) Both inner and outer moving electrodes 3 of the above embodiment
The components 1 and 34 are integrated by the connecting member 35 before assembling the breaker device 10, but may be configured such that, for example, an insulating resin shaft is inserted into both moving electrodes at the time of assembling. However, if the inner moving electrode 31 and the outer moving electrode 34 are integrally connected before the breaker device is assembled as in the above embodiment, the inner and outer moving electrodes 31 and 34 are fixed at a time. The breaker device 10 can be assembled to the electrode 20 or the like, and the work of assembling the breaker device 10 becomes easy.

(2) The inner and outer electrodes of the above embodiment are
Although they are arranged concentrically, they need not necessarily be arranged concentrically as long as they have a double structure.

[Brief description of the drawings]

FIG. 1 is a side sectional view when a breaker device according to an embodiment of the present invention is in an ON state.

FIG. 2 is a side sectional view when the breaker device is in an off state.

FIG. 3 is a perspective view showing inner and outer fixed electrodes and a movable electrode.

FIG. 4 is a side sectional view of a conventional breaker device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Breaker apparatus 11 ... Case 20 ... Fixed electrode 21 ... Inner fixed electrode 24 ... Outer fixed electrode 30 ... Moving electrode 31 ... Inner moving electrode 34 ... Outer moving electrode C1: Positive electric circuit C2 ... Negative electric circuit

Claims (2)

[Claims] 1. A cylindrical movable electrode is slidably fitted to a pair of fixed electrodes fixed to both ends of a case and extended to be close to each other, and the movable electrode is fixed to the two by a switch operation. In a breaker device that moves to a conductive position inserted between the electrodes and a non-conductive position unevenly distributed on one fixed electrode side, and opens and closes an electric circuit connected to the fixed electrode, each of the fixed electrodes is An inner fixed electrode and an outer fixed electrode are extended while being held in a non-conductive state with each other in a double structure, and the movable electrode is formed in a double structure corresponding to the fixed electrode and is non-conductive with each other. It is composed of an inner moving electrode and an outer moving electrode held in a state, and by moving the inner and outer moving electrodes together to the conducting position and the non-conducting position, the inner moving electrode and the outer moving electrode are separately separated into the inner and outer fixed electrodes. Breaker device characterized by electrical path connection to two systems is opened and closed. 2. The breaker device according to claim 1, wherein the inner moving electrode and the outer moving electrode are integrally connected by an insulating resin.