JP2000235824A - Breaker device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a breaker device allowing prevention of plastic deformation of a curved spring. SOLUTION: A movable electrode 12 of a breaker device is provided with an insulating base 13, a handle 14 tiltably mounted to the base 13 and a curved spring 30 forcingly applied to the handle 14 so as to hold the handle 14 with it standed and tilted. Tilting the handle 14, force so as to be dragged by the handle 14 is applied to either one of both sides of arches 32 arranged in the curved spring 30. The arches 32 are continued from one side of the base 13 to another side of that, thereby a part where the force is applied may not be greatly deformed because of support from the both sides. Accordingly, plastic deformation of the spring 30 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breaker device used for a power line or the like.

[0002]

2. Description of the Related Art An example of a breaker device is shown in FIGS. 1 and 2, in which a movable electrode 12 is inserted into and removed from a pair of fixed electrodes 11 provided in a main body case 10. , 11 are disconnected or connected. In addition, a handle 14 for performing an insertion / removal operation is provided on the insulating base 13 provided on the upper part of the movable electrode 12 in a tiltable manner, and the handle 14 is fixed to the insulating base 13 by a curved spring described below. As shown in (2), it is held in the upright position and the inclined position.

FIGS. 10 to 13 show, for example, Japanese Unexamined Patent Publication No. 9-2
The structure of the curved spring 1 in the conventional breaker device disclosed in Japanese Patent No. 23439 is enlarged. The curved spring 1 is attached to the insulating base 13 such that the metal plate is bent in a ring shape and the butted portions 2 at both ends thereof are directed upward. Then, the curved spring 1 is pressed against an inward surface 14A formed at a position distant from the tilt center of the handle 14, and the handle 14 is held at the upright position and the tilt position.

[0004]

By the way, the handle 1
When the lever 4 is tilted, the bending spring 1 receives a force to be dragged by the inward surface 14 </ b> A of the handle 14. In the conventional breaker device, since the curved spring 1 is discontinuous on the upper side, the curved spring 1 can receive a force only on one of the right and left sides of the discontinuous portion, as shown in FIG. In addition, there is a problem that the curved spring 1 is greatly opened and plastically deforms.

The present invention has been made in view of the above circumstances, and has as its object to provide a breaker device that can prevent plastic deformation of a curved spring.

[0006]

In order to achieve the above object, a breaker device according to the first aspect of the present invention connects a pair of fixed electrodes standing upright in parallel with each other by inserting and removing the fixed electrodes. Or a movable electrode to be cut, an insulating base provided integrally with the movable electrode, a handle tiltably provided on the insulating base, an inward surface formed on the handle away from the tilt center and facing the tilt center side, A breaker device having a curved spring fixed to a position facing the inward surface of the insulating base portion and pressed against the inward surface so as to hold the handle in an upright state and an inclined state; Is characterized in that the portion pressed against is provided with an arch portion extending continuously from one side of the insulating base to the other side across the tilting center of the handle.

A second aspect of the present invention is characterized in that, in the first aspect, the curved spring is formed by connecting ends of a metal plate which is curved in an annular shape.

[0008] The invention of claim 3 is claim 1 or claim 2.
In the described one, on the inward surface, a projection is projected toward the arch portion, and the arch portion has a pair of convex bay portions facing both sides of the projection in a standing state of the handle, and the biconvex bay portion is separated from each other. It is characterized in that a concave bay portion with a concave side is provided.

[0009]

When the handle is tilted, one of the left and right arch portions provided on the curved spring receives a force so as to be dragged by the inward surface of the handle. However, since the arch portion is continuous from one side portion to the other side portion of the insulating base portion, the portion receiving the force is supported from both sides and does not greatly deform,
This prevents plastic deformation of the curved spring.

<Invention of Claim 2> Since the metal plate constituting the curved spring has a closed annular shape, only a part of the metal plate is greatly deformed even if a force is applied to the curved spring from any direction. And the plastic deformation of the curved spring is more reliably prevented.

<Invention of Claim 3> When the handle is in the upright state, the protrusion protruding from the inward surface of the handle fits between the biconvex bay portions provided on the arch portion. From this standing state,
When the handle is tilted, the projection interferes with the convex portion, and a large resistance force is applied to return the handle to the upright state. As soon as the projection has passed over the convex bay portion, the projection escapes into the concave bay portion formed therein, and the above-described resistance force is suddenly released. Thereby, a sense of moderation when the steering wheel is tilted can be obtained.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A breaker device according to one embodiment of the present invention is shown in FIGS.
The basic structure other than the structure described above is common to the breaker device described in the prior art. Hereinafter, the configuration of the breaker device of the present embodiment will be described while supplementing the basic structure.

The breaker device according to the present embodiment is provided in the middle of a power line D of an electric vehicle. The pair of fixed electrodes 11 provided on the breaker device are erected on one side in the vertical width direction in the main body case 10, and the main body case 1
On the other side of the fuse 0, a fuse 20 is housed. The fixed electrode 11 is formed in a pin shape, and has a male screw (not shown) cut at the lower end. Then, a male screw of each fixed electrode 11 is screwed into a pair of female screw bodies (not shown) embedded in the bottom surface of the main body case 10 by insert molding, so that both fixed electrodes 11 and 11 stand upright in parallel. It is fixed to. In addition, a terminal D1 connected to one of the divided portions of the electric wire D is fastened to one of the fixed electrodes 11 on the left side in FIG.
Is connected to the other cut portion of the electric wire D via the fuse 20.

A pair of insertion holes 21 and 21 are formed in the ceiling wall of the main body case 10 just above the fixed electrodes 11 and 11. The louver terminals 12A, 12A described below provided on the movable electrode 12 are inserted into and removed from the pair of fixed electrodes 11, 11 in the main body case 10 through the insertion holes 21, 21. Is disconnected or connected.

On the other hand, the movable electrode 12 has a pair of louver terminals 12A, to which the tips of the fixed electrodes 11 can be fitted.
The bridge 12C has a structure in which the bridge 12C is connected across the base 12A, and is integrally provided with the elongated insulating base 13 made of synthetic resin by insert molding. Insulation base 1
The upper surface of the handle 3 is provided with a frame-shaped handle 14 having an inverted trapezoidal outer shape. Bearings provided at both ends in the longitudinal direction of the upper surface of the insulating base 13 and at both ends of the bottom side of the handle 14 are provided. The portions 22A and 22B are penetrated by the pins P, and the pins P
The handle 14 tilts about the axis.

As shown in FIG. 3, a raised portion 23 is formed on the upper surface of the center of the insulating base 13 in the longitudinal direction, and a top surface of the raised portion 23 is perpendicular to the longitudinal direction of the insulating base 13. A mounting projection 24 having an elongated flat rectangular prism shape is provided upright. A hook 25 is provided at the upper end of the mounting projection 24.
Are protruding.

On the other hand, the raised portion 23 of the handle 14
As shown in FIG. 6, an accommodation recess 26 capable of accommodating the curved spring 30 is formed in a portion opposing the curved spring 30, and the inner surface of the accommodation recess 26 is in contact with the curved spring 30 described below. It is an inward face 14A. Further, the inward face 1 of the present embodiment
4A, unlike the conventional one, the protrusion 27 is provided with the handle 1.
4 protrudes toward the tilt center.

A protruding portion 23 is provided with a curved spring 30 unique to the present embodiment. Curved spring 30
Is formed, for example, by punching a metal plate made of a spring steel plate as shown in a development view of FIG. 4 and bending it. Then, as shown in FIG. 3, a flat base 31 disposed on the upper surface of the raised portion 23 and an arch portion 32 rising from both side edges of the base 31 and extending over the base 31. Prepare. The base 31 has a rectangular hole 33 into which the mounting projection 24 is inserted, and a locking piece 34 that rises obliquely upward from the edge of the rectangular hole 33 and locks the hook 25. I have. Furthermore, arch part 3
A pair of convex ridges 35, 35 formed by bending a metal plate in a meandering shape protrudes upward from the top of 2.
Recessed sides 35, 36 formed by slightly recessing a metal plate inward are provided on the mutually separated sides of 35.

More specifically, the metal plate constituting the curved spring 30 is provided with a pair of rectangular regions 4 elongated in the left-right direction of FIG.
It is stamped into a structure provided with 1, 41, and has a symmetrical shape as a whole up, down, left and right. Then, the belt-shaped region 40 is curved to form the arch portion 32 of the curved spring 30, while the rectangular regions 41, 41 abut each other, and a flat plate-like connecting member 37 (see FIG. 3) therebetween. ) And spot-welding the curved spring 30.
Is formed. In each of the rectangular regions 41, a part of an edge portion away from the band-shaped region 40 is formed by a slit 42.
And the locking piece 34 is formed.

FIG. 4 shows a valley fold line in the metal plate by a chain line, and a mountain fold line by a dash-dot line. FIG. 5 shows a state in which the metal plate is being bent. It is shown.

This embodiment has a structure as described above,
Subsequently, the operation will be described. The breaker device usually has a state in which the movable electrode 12 is inserted into the fixed electrode 11 and the handle 14 is tilted in the engine room of the electric vehicle. When the handle 14 is in a tilted state, as shown in FIG. 8, the inward surface 1 provided on the handle 14 is provided on the base end side of the arch portion 32 provided on the curved spring 30.
4A is pressed, and the handle 14 is held by the reaction force so as not to tilt. Here, since the protrusion 27 is provided on the inward surface 14A, the protrusion 27 bites into the curved spring 30 to increase the holding force.

For example, at the time of maintenance of an electric vehicle, the movable electrode 12 of the breaker device is pulled out from the fixed electrode 11 in order to keep the power line D in a non-conductive state and ensure safety. At this time, the handle 14 is tilted from the tilted state to the upright state. Here, when the handle 14 is raised, the projection 27 is gradually moved upward while being pressed against the curved spring 30 while remembering a large resistance. Then, when the handle 14 is inclined, the projection 27 escapes into the recess 36 formed in the curved spring 30, and the above-described resistance force is suddenly released. As a result, it is possible to confirm that the handle 14 is not tilted with a sense of moderation.

When the handle 14 is further raised, the projection 27 comes into contact with the convex ridge 35 on the right side in FIG. Then, when the protrusion 27 gets over the top of the convex bay portion 35, the middle portions of the projection 27 and the convex bay portion 35 are in sliding contact with each other, and the projection 27 is located at the center of the both convex bay portions 35, 35. , The handle 14 is brought upright (see FIG. 6). The handle 14 in the upright state is non-tiltably held by the elastic force of the curved spring 30 pressed against the inward surface 14A and the locking force between the projection 27 and the convex bay portion 35. When the movable electrode 12 is pulled out of the fixed electrode 11 by pulling the handle 14,
The power line D enters a non-conductive state.

When the maintenance is completed, the handle 14 in the upright state is grasped, and the movable electrode 12 is fixed to the fixed electrode 11.
Insert into 11. At this time, the handle 14 is not tilted and held by the elastic force of the curved spring 30 and the locking force between the protrusion 27 and the convex ridge portion 35 as described above. The insertion operation can be easily performed.

After the movable electrode 12 is inserted, the handle 1
4 is changed from the standing state to the tilting state. Therefore, for example, when the handle 14 is tilted to the right in FIG. 6, the protrusion 27 interferes with the convex ridge portion 35, and a large resistance force is applied to return the handle 14 to the upright state. When the handle 14 is tilted in opposition to the resistance, the right portion of the arch portion 32 of the curved spring 30 in FIG.
Receive power to be dragged by However, since the arch portion 32 is continuous from one side of the insulating base 13 to the other side, the portion receiving the force is supported from both sides and does not significantly deform. Then, as soon as the handle 14 is tilted obliquely and the protrusion 27 gets over the convex bay portion 35, the projection 27 escapes into the concave bay portion 36, and the above-described resistance force is suddenly released. Thus, a sense of moderation when the handle 14 is depressed can be obtained.

When the handle 14 is further pushed down, the protrusion 2
The curved spring 30 is bent so that the base 7 of the handle 1 bites into the base end of the curved spring 30, and the handle 1
4 is held in a tilted state.

As described above, according to the breaker device of the present embodiment, since the arch portion 32 provided on the curved spring 30 is continuous from one side of the insulating base 13 to the other side, it receives a force. The portion is supported from both sides and is not greatly deformed, so that the plastic deformation of the curved spring 30 is prevented. In addition, since the metal plate forming the curved spring 30 is joined by the connecting member 37 to form a closed ring, only a part of the metal plate is greatly deformed even when a force is applied to the curved spring 30 from any direction. Therefore, the plastic deformation of the curved spring 30 is more reliably prevented.

<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) The curved spring 30 of the above-described embodiment has a closed ring shape as a whole by connecting the ends of the metal plates with the connecting member 37, but the curved spring has at least an arch portion. May be discontinuous in portions other than the arch portion. For example, a configuration in which the connecting member 37 is not provided in the base 31 of the curved spring 30 in the above embodiment is also included in the technical scope of the present invention.

(2) Also, as shown in FIG. 9, in the configuration in which the connecting member 37 is not provided on the base 31 of the curved spring 30 in the above-described embodiment, both sides of the base 31 sandwiching the discontinuous portion are provided. The locking holes 50, 50 are formed to penetrate, and the insulating base 13 is made to correspond to the locking holes 50, 50.
It is good also as a structure which provided the locking projections 51 and 51 in. With such a configuration, the engagement between the locking protrusion 51 and the locking hole 50 restricts the opening of the discontinuous portion of the curved spring 30.

(3) In the above embodiment, the handle 14 is held in the upright state or the inclined state by pressing the curved spring 30 and the inward surface 14A. However, the toggle mechanism is constituted by the curved spring and the inward surface. Alternatively, the handle may be held in the upright state and the tilted state by the toggle action.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the structure of a breaker device according to an embodiment of the present invention.

FIG. 2 is a side view of the breaker device.

FIG. 3 is a perspective view showing a mounting portion of a curved spring.

FIG. 4 is a development view of a curved spring.

FIG. 5 is a perspective view showing a stage in the middle of bending a curved spring.

FIG. 6 is an enlarged side sectional view showing a standing state of a handle;

FIG. 7 is an enlarged sectional side view showing a state in which the handle is being tilted.

FIG. 8 is an enlarged sectional side view showing a tilted state of the steering wheel.

FIG. 9 is a perspective view showing a modification of the curved spring.

FIG. 10 is an enlarged sectional view showing an upright state of a handle of a conventional breaker device.

FIG. 11 is an enlarged cross-sectional view showing a tilted state of a handle of a conventional breaker device.

FIG. 12 is a perspective view showing a mounting portion of a curved spring in a conventional breaker device.

FIG. 13 is an enlarged sectional side view showing a state in which the handle of the conventional breaker device is being tilted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Fixed electrode 12 ... Movable electrode 13 ... Insulating base 14 ... Handle 14A ... Inward surface 27 ... Projection 30 ... Curved spring 32 ... Arch part 35 ... Convex bay part 36 ... Concave bay part 37 ... Connecting member

Claims (3)

[Claims] 1. A pair of fixed electrodes standing upright in parallel, a movable electrode inserted into and removed from the fixed electrode to connect or disconnect between the two fixed electrodes, an insulating base provided integrally with the movable electrode, A handle provided to be tiltable on the base, an inward face formed on the handle away from the tilt center and facing the tilt center side, and the insulating base is fixed to a position facing the inward face of the insulating base; A breaker device comprising: a curved spring pressed against the inward surface so as to hold the handle in the upright state and the tilted state. A part of the curved spring pressed against the inward surface includes tilting of the handle. A breaker device, comprising: an arch portion extending continuously from one side of the insulating base to the other side across the center. 2. The breaker device according to claim 1, wherein said curved spring is formed by connecting ends of metal plates which are curved in an annular shape. 3. A projection protruding from the inward surface toward the arch portion. The arch portion has a pair of convex bay portions facing both sides of the projection in a standing state of the handle; The breaker device according to claim 1, further comprising a concave bay portion in which the remote sides of the convex bay portion are recessed from each other.