JPH09171737A - Breaker device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device which is formed compact with a built-in fuse, and has an excellent safety. SOLUTION: To a disk 34 furnishing movable electrodes 36 and a fuse 43 connected between both movable electrodes 36, a pair of locking projection pieces 50 are formed at the symmetric positions of the outer periphery. A casing 24 is covered on a base board fixing a fixed electrode, and an upper and a lower inward collars 51 and 52 to support the disk 34 turnable by holding the disk 34 at the center are formed. To the lower collar 52, a pair of cutting holes 53 are formed at the non-conforming positions. When the casing 24 is pulled up in the non-conforming condition of the locking projection pieces 50 and the cutting holes 53, the disk 34 is pulled up and the movable electrodes 36 is pulled out of the fixed electrode, so as to cut off between wires. When the disk 34 is turned to the position where the locking projection pieces 50 are conformed to the cutting holes 53 in a state of removing the casing 24, the disk 34 is removed, and the fuse 43 can be replaced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breaker device which is used, for example, as a power line of an electric vehicle.

[0002]

2. Description of the Related Art For example, a power cable of an electric vehicle is provided with a breaker capable of dividing the power cable for maintenance or the like and a fuse for preventing an excessive current flow. Is desirable. Therefore, conventionally,
If a knife switch type breaker and a holder containing a fuse are connected in series and placed on the power line, turn off the breaker for maintenance, and turn off the breaker once the fuse has blown and must be replaced. After that, the fuse in the holder was replaced.

[0003]

However, in the conventional device, two devices, a knife switch type breaker and a fuse holder, must be installed, and in particular, a large current flows through the power line of an electric vehicle. Since each device itself is large, there is a problem that it requires a lot of installation space. Further, since the breaker and the fuse are provided separately, there is a possibility that the fuse may be replaced without forgetting to turn off the breaker.

The present invention was completed in view of the above circumstances, and an object of the present invention is to provide a breaker device which has a built-in fuse, is compact, and is excellent in safety. is there.

[0005]

As means for achieving the above object, the invention of claim 1 is such that a casing is removably attached to a base provided with a pair of fixed electrodes, and Is characterized in that a pair of movable electrodes that are detachably connected to both the fixed electrodes are housed, and a fuse is detachably connected between the movable electrodes.

According to a second aspect of the present invention, a pair of fixed electrodes connected to the divided portion of the electric wire, a base on which the fixed electrodes are fixedly mounted, and a cylindrical shape detachably attached to the base. A casing, a disc movably and rotatably housed in the casing in an axial direction, and a penetratingly-provided end of the disc that is connected to one of the fixed electrodes in a removable manner. A pair of movable electrodes and a fuse removably connected between the protruding ends of the movable electrodes to the other surface side are provided, and a protrusion or a recess is provided at a part of the outer peripheral edge of the disk. The casing is characterized in that the inner surface of the casing is provided with a recess or projection that allows the projection or recess of the disk to be inserted in the axial direction.

[0007]

In the invention of claim 1, when the casing is removed from the base, both movable electrodes are pulled out from the corresponding fixed electrodes, whereby the electric wire is divided. When the fuse is replaced, the casing is removed, the movable electrode is pulled out, and the fuse is replaced with the fuse separated from the fixed electrode. By incorporating a fuse, the device can be compactly integrated, and since the fuse can be replaced only after the movable electrode is removed from the fixed electrode, it is excellent in safety. Furthermore, since the waterproof seal need only be provided at one place between the casing and the base, the waterproof reliability can be increased.

According to the second aspect of the present invention, when the casing is removed at the position where the projection and the recess are not aligned with each other, the disk is removed together while being locked, and both movable electrodes are pulled out from the corresponding fixed electrodes. The wire is cut. After removing the casing, turn the disk to a position where the protrusion and the recess are aligned,
The disk, the movable electrode and the fuse are removed from the casing, and the fuse can be replaced at a position separated from the fixed electrode. By a simple operation, the electric wire can be cut and the fuse can be safely replaced.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. In FIG.
Is a base made of synthetic resin, which is formed in a thick disk shape, and an attachment cylinder portion 2 for attaching a casing 24 described later from the upper surface side is formed on the upper surface thereof. The lower portion of the outer peripheral surface of the mounting tube portion 2 is thick, a circumferential groove 3 is formed in the thick portion and a seal ring 4 is fitted, and the upper side of the circumferential groove 3 is Tapered guide portions 5 are formed at appropriate angular intervals.

Insertion holes 7 of the terminal fittings 18 are formed so as to face each other at symmetrical positions with respect to the center of the outer peripheral surface of the base 1, and the ceiling surface on the back side of each insertion hole 7 is formed. The mounting hole 9 of the female fixed electrode 10 is opened, and the mounting hole 9 has a stepped shape with a reduced diameter on the lower side. The fixed electrode 10 is provided with a connection cylinder 11 on the upper end side, and a stepped locking collar 12 corresponding to the mounting hole 9 is formed on the outer peripheral surface at an intermediate position in the longitudinal direction.
A threaded rod 13 is formed on the lower end side. When the locking flange 12 of the fixed electrode 10 is fitted into the mounting hole 9, the connecting cylinder 11 projects above the ceiling surface of the insertion hole 7, and the screw rod 13 projects into the insertion hole 7. It is supported so that it cannot fall. In addition, on the inner surface of the upper end of the connection cylinder 11, a protrusion 14 that functions to lock a male movable electrode 36 described later is provided.

Reference numeral 15 is an electric wire, which is divided in the middle thereof, and lug terminal-shaped terminal fittings 18 are respectively fixed to the ends of the core wire 16 which is peeled and exposed at the divided portion. The center hole 19 of each terminal fitting 18 is inserted into the corresponding threaded rod 13 of the fixed electrode 10, and a nut 22 is screwed into the threaded rod 13 from an operation hole 20 formed in the lower surface of the base 1 via a washer 21. The terminal fittings 18 are connected to each fixed electrode 10 by fitting them together and tightening them. The insertion hole 7 of the terminal fitting 18 is potted and sealed.

A casing 24 attached to the above-mentioned base 1.
Has a cylindrical shape with an open lower surface, and an operating handle 25 is formed on the upper surface along the diametrical direction. Further, an outer wall 26 is provided around the outer peripheral surface on the lower end side of the casing 24 at a predetermined interval to form a double wall structure. The casing 24 is put on the base 1 by inserting the above-mentioned mounting cylinder portion 2 of the base 1 between the inner and outer walls thereof.

An outer peripheral surface of the outer wall 26 is formed with a locking projection 27 whose lower surface is a tapered surface over the entire circumference, and a predetermined position on the upper surface of the base 1 outside the mounting cylinder 2. The hook 3 that is locked to the locking protrusion 27.
The elastic lock member 30 provided with No. 1 is erected upright via the bracket 29, and the hook 31 of the elastic lock member 30 is elastically locked to the locking projection 27, so that the casing 24 comes off. It is designed to be locked in a stopped state. As shown by the chain line in FIG. 5, the elastic lock member 30 can be unlocked by hooking a finger or the like on the operation portion 32 provided on the outer side of the upper end and bending and deforming it outward. .

A disk 34 made of synthetic resin is accommodated in the casing 24. This disk 34
On the upper surface of the, a pair of fitting cylinder portions 35 are provided in a projecting manner at symmetrical positions with the center interposed therebetween. The fitting tubular portion 35 is for inserting the male movable electrode 36 connected to the fixed electrode 10 described above, and is formed corresponding to the fixed electrode 10.

The movable electrode 36 is rod-shaped, has a threaded portion 37 for mounting a fuse 43, which will be described later, formed on the upper end thereof, and a locking collar 38 formed on the outer periphery below the threaded portion 37. In addition, the lower end is the connecting cylinder 11 of the fixed electrode 10.
It is a connection portion 39 fitted inside. The fixed electrode 10 is fitted from above the fitting tubular portion 35, the locking flange 38 is applied to the upper surface of the fitting tubular portion 35, and the retaining ring 40 is fitted to the portion protruding from the lower surface of the fitting tubular portion 35. ,
It is supported so that it cannot move up and down. A groove 41 into which the protrusion 14 of the connection tube 11 of the fixed electrode 10 is fitted is cut on the outer periphery of the connection portion 39 of the movable electrode 36.

A fuse 4 is provided between the upper ends of the movable electrodes 36.
3 is attached. At both ends of the fuse 43,
A connecting plate 44 is formed so as to open the mounting hole 45, and each mounting hole 45 is inserted into a corresponding screw portion 37 of the movable electrode 36, and the nut 4 is inserted into the screw portion 37 via a washer 47.
The fuse 43 is connected between both movable electrodes 36 by screwing 8 and tightening.

The above-mentioned disk 34, as shown in FIG.
As a whole, the casing 24 is formed to have a diameter that fits into the inner peripheral surface of the casing 24 with a clearance, and a pair of locking protrusions is provided at a position corresponding to both ends in the longitudinal direction of the fuse 43 on the outer peripheral edge thereof. 50 are formed.

On the other hand, on the inner peripheral surface of the casing 24, upper and lower two inward flanges 51 and 52 are approximately equal to the thickness of the disk 34 at a height position substantially corresponding to the ceiling surface 55 of the outer wall 26 described above. It is formed at intervals. Both Tsuba 51,
The reference numeral 52 projects inward by a size that allows the disc 34 to pass in the vertical direction. Also, the lower collar 52
A pair of cutout holes 53 are formed in the upper surface of the disk 34 so that the locking projections 50 of the disk 34 can be inserted in the vertical direction. As shown in FIG. 3, the two cutout holes 53 are formed at symmetrical positions corresponding to both ends of the handle 25 in the longitudinal direction.

Further, the mark 5 is provided at a predetermined position on the ceiling surface 55 of the outer wall 26 of the casing 24, in this embodiment, as shown in FIGS.
6 is formed, and when the movable electrode 36 is attached to the disk 34 and is inserted into the fixed electrode 10, the casing 24 is set in a rotation posture in which the mark 56 corresponds to the elastic lock member 30, As shown in FIG.
3 is set to be aligned with the locking protrusion 50 of the disk 34.

This embodiment has the above-described structure,
Subsequently, the operation will be described. FIG. 1 shows a use state, in which a pair of movable electrodes 36 attached to the disk 34 are inserted and connected to a corresponding pair of fixed electrodes 10, and on the upper surface side of the disk 34, between the movable electrodes 36. The fuse 43 is attached and connected. Further, the casing 24 is in a rotation posture in which the mark 56 is aligned with the elastic lock member 30, that is, as shown in FIG. 4, the locking protrusion 50 of the disc 34 and the notch hole 53 of the lower collar 52 are aligned. In the moving posture, the mounting cylinder portion 2 of the base 1 is sandwiched between the double walls, and the elastic lock member 30 is flexed outwardly and is covered from above, and the locking projection 50 of the disk 34 is cut out. It is pushed through 53 until it hits the upper flange 51. Then, the elastic locking member 30 returns inward and the hook 31 is locked to the locking projection 27, so that the hook 31 is locked in the retaining state. In FIG. 1, the casing 24 is further rotated 90 degrees, and as shown in FIG.
The phase is 0 degrees out of phase.

In this state, the electric wire 15 on one side is connected to the electric wire 15 from the fixed electrode 10 and the movable electrode 36 via the fuse 43, and on the other side via the movable electrode 36 and the fixed electrode 10 on the other side. It is electrically connected to the electric wire 15. Also,
A space between the casing 24 and the base 1 is sealed by a seal ring 4 fitted on the outer circumference of the mounting cylinder 2.

When performing maintenance or the like,
From the state of FIG. 1, the elastic lock member 30 is flexed outward as shown by the chain line in FIG.
When the casing 24 is pulled up as shown by the arrow in the figure while holding 5, the locking projection 50 and the notch hole 53 are out of phase and the lower flange 52 hits the locking projection 50. 34 is lifted upward together with the casing 24 while being locked, and the movable electrode 36 is pulled out from the fixed electrode 10 while removing the ridge 14 from the groove 41. As a result, the electric wires 15 are separated from each other.

On the other hand, when the fuse 43 is blown and needs to be replaced, the casing 24 is removed as shown in FIG. 5, and then the disc 34 is rotated 90 degrees as shown in FIG.
Then, since the locking projection 50 and the cutout hole 53 are aligned with each other, the locking projection 50 passes through the cutout hole 53, and as shown in FIG. 6, the disk 34, the movable electrode 36, and the fuse 43 are removed from the casing 24. Removed. Therefore, the fuse 43 can be removed by removing the nut 48 and can be replaced with a new fuse 43. After the fuse 43 is replaced, the disk 34 and others are stored in the casing 24 in the state shown in FIG. 5 in the reverse order of the above, and the casing 24 is covered on the base 1 while inserting the movable electrode 36 into the fixed electrode 10. .

As described above, in the breaker device of this embodiment, the fuse 43 is built in, so that the device can be compactly assembled and the installation space can be greatly reduced. Further, the fuse 43 is replaced after the casing 24 is removed, that is, after the movable electrode 36 is removed from the fixed electrode 10, so that the safety is excellent. As for waterproofing, it is sufficient to mount the seal ring 4 only at one place between the casing 24 and the mounting tube portion 2 of the base 1, so that the reliability of waterproofing can be improved.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) Contrary to the above embodiment, a cutout hole may be formed in a part of the outer circumference of the disk, and a protrusion that can be inserted into the cutout hole may be formed on the inner surface of the casing. (2) Further, the means for locking the casing is not limited to that of the above-described embodiment, and other appropriate means may be used.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of one embodiment of the present invention.

FIG. 2 is a perspective view of a casing and a disk.

FIG. 3 is a sectional view taken along line XX of FIG. 1;

FIG. 4 is a cross-sectional view when a disc is rotated 90 degrees.

FIG. 5 is a vertical sectional view showing an electrode separating operation.

FIG. 6 is a vertical sectional view showing a disc removing operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base 4 ... Seal ring 10 ... Fixed electrode 15 ... Electric wire 24 ... Casing 34 ... Disk 36 ... Movable electrode 43 ... Fuse 50 ... Locking protrusion 52 ... Collar 53 ... Notch hole

Claims (2)

[Claims] 1. A casing is removably attached to a base provided with a pair of fixed electrodes, and a pair of movable electrodes that are detachably connected to the both fixed electrodes are accommodated in the casing. A breaker device is characterized in that a fuse is detachably connected between both movable electrodes. 2. A pair of fixed electrodes connected to a divided part of an electric wire, a base on which the fixed electrodes are fixedly mounted, a cylindrical casing detachably attached to the base, and a casing thereof. A disk that is rotatably and rotatably housed in the axial direction, and a pair of movable electrodes that are provided in a penetrating shape in the disk and that have projecting ends toward one surface that are removably connected to the fixed electrodes. A fuse that is detachably connected between the protruding ends of the movable electrodes to the other surface side, a protrusion or a recess is provided in a part of the outer peripheral edge of the disk, and the casing The breaker device is characterized in that the inner surface of the disk is provided with a recess or a projection that can be inserted through the projection or the recess of the disk in the axial direction.