KR100458820B1 - Circuit breaker - Google Patents

Abstract

The present invention provides a circuit breaker having a movable contactor and a fixed contactor. Allow the member to move the movable contactor to disconnect or connect the switch. A latch including a movable device controls the initial movement of the member but the member moves independently of the latch. The movable device may cause the latch to be released manually or by other means. The other means may be an electromagnet, or an inertial body that is releasable from the stop position in response to excessive acceleration.

Description

Circuit breaker

The present invention relates to circuit breakers for breaking electrical circuits in various cases for electrical safety in vehicles.

For electric safety in vehicles such as vehicles, it is often required to cut off the electric circuit in response to various cases including excessive speeding, remote operation and manual operation, and the present invention provides a circuit for responding to the various cases as described above. It is about a breaker.

SUMMARY OF THE INVENTION The present invention aims to provide a circuit breaker that corresponds to various cases, and provides a circuit breaker with replaceable parts such that the replaceable part may be replaced for one or more cases listed according to various replaceable parts. Its purpose is to make it work.

In order to achieve the above object, the present invention provides a circuit breaker having a movable contactor and a fixed contactor.

1 is a cross-sectional view of one embodiment of a circuit breaker according to the present invention;

2 is a cross-sectional view of another embodiment of a circuit breaker according to the present invention;

3 is an exploded perspective view to show which elements of the two embodiments are common;

<Description of the symbols for the main parts of the drawings>

11: casing 13: fixed terminal

14: fixed contactor 15: movable contactor

17: reset button 18: spring

23 cylindrical plunger 24 head

25 ball 26 cylindrical member

27: spring 29: shoulder surface

31: Manual Button 41: Armature

51: inertia 53: magnet

54: spider

The circuit breaker of the present invention includes a fixed contactor, a movable contact configured to be movable to change an electrical connection state of the fixed contactor, and the movable contactor electrically connected to the fixed contactor. A movable device movable to the operating position for changing the state from the first state to the second state, first means for moving the movable device to the operating position, and moving the movable device to the operating position It is characterized by consisting of a manual means for.

The movable device is preferably movable by the first means and / or the manual means by the release of the latch so as to be movable to change an electrical connection state between the latch and the fixed contactor, which is releaseable by the first means and the manual means. It is composed of a moving means which is movable independently of the means.

The manual means is preferably provided to move the movable device independently of the first means.

The circuit breaker also includes reset means for moving the moving means in the opposite direction to reset the latch upon release of the latch.

The first means may be composed of an electromagnet having an armature that is movable to move the movable device. Another configuration of the first means may be an inertial body that is movable in response to an acceleration exceeding a given threshold inside the chamber for moving the movable device.

The manual means preferably comprises a plurality of members extending around the outer surface of the chamber.

When a plurality of members located around the chamber are provided, a spider having an arm equal to the number of the members is used.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A casing 11 made of an insulating material having two fixing holes 12 to be attached to a structure in which a circuit breaker is used is included in a part common to FIGS. 1 and 2. On both sides there are two fixed terminals 13, each connected to a fixed contactor 14 which can be led by a movable contactor 15 extending across the center of the circuit breaker. The movable contactor 15 is shown in the lowered position connecting the two fixed contactors 14 and the casing 11 is the movable contactor 15 is raised to establish a conductive path between the two fixed contactors 14. Provide a space 16 to block. Above the movable contactor 15 there is a reset button 17 supported by the compression spring 18 and covered by an elastic cover 19 which is fixed by a lip which is inserted into the groove 21. The cover protects the reset button and channel 22 from the ingress of dust and moisture inside the top of the casing.

Below the movable contactor 15 is a cylindrical plunger 23 with a protruding head 24, which is adapted for radial movement in a hollow cylindrical support at the initial position of the circuit breaker. It is aligned with a plurality of balls that are supported and engage the inner diameter of the hollow cylindrical member 26 located slightly below the movable contactor 15 at the initial position of the circuit breaker. The member 26 is connected to move with the button 17. When the member 26 is in the lower latched position as shown in FIG. 1, the spring 18 exerts a force on the movable contactor 15 to make an electrical connection with the fixed contactor 14. The spring 27 is interlocked with the underside of the upper lip 28 on the cylindrical member 26 and biased upwards and the inner hole of the member 26 has a shoulder face 29 having an inward and upward direction. . In the initial position of the circuit breaker, the cylindrical member 26 cannot move upwards in a spring biased state because the shoulder surface 29 engages with a ball which impedes movement in the centrifugal direction. These elements thus cause the plunger's protruding head 24 to rise above the center of the ball by the upward movement of the plunger and cause the ball to move in an inward thin axis away from the shoulder face 29 of the cylindrical member. , Lifting the movable contactor 15 from the fixed contactor 14 by enabling upward movement of the cylindrical member 6 under the bias of the spring 27 and making contact with the bottom surface of the movable contactor 15. Thus, a latch is formed to block the circuit between the terminals 13.

The latch is reset by pressing the button 17 and the member 26 until the shoulder face 29 is moved downwards to the bottom of the ball 25 and moves outwards in the centrifugal direction. The member 26 has a bridge under the movable contactor 15 and by further pressing of the button 17 the bridge delivers gravity when the plunger 23 is returned to its lower initial position. The protruding head 24 of the cylindrical plunger tapers from the wide diameter of the lower end to the narrow diameter of the upper end and inhibits the upward movement of the plunger 23 from releasing the latch by the vibration of the circuit breaker. The description is shown in enlarged form in FIG.

At the bottom of the casing 11 is a button 31, operable by hand, within the stretchable cover 32. The mechanical linkage described later transmits the upward movement of the button 31 to the plunger 23.

FIG. 3 shows an exploded view of parts of the device common to all embodiments and on the left side of FIG. 3 elements 41 to 46 applicable to the embodiment of FIG. 1 and to the embodiment of FIG. 2 on the right side of FIG. 3. An exploded view of the elements 51-56 is shown. All other elements described so far are common to both embodiments.

The latch can be released by two different means. The first means has two different embodiments and has been described in FIGS. 1 and 2 respectively. The second means is a manually operable button 31 and a mechanical linkage acting therewith.

In FIG. 1, the first means for moving the plunger 23 is formed by an armature 41 wound around a solenoid by a spring 42 and at its upper end interlocking with the bottom of the cylindrical plunger 23 inside the casing. In order to have a narrow neck 43 passing through the hole 44. The perimeter of the hole 44 serves to stop the cylindrical plunger after the cylindrical plunger is returned to the initial position by the pressing of the button 17. The electrical contact 45 is provided on the right side of the casing, and the upper end of the narrow neck 43 of the armature is raised upwards in contact with the bottom of the cylindrical plunger so that the ball moves in the centrifugal direction so that the cylindrical member 26 is movable contactor. It is connected to the coil 46 of the chariot seat that causes the armature to rise against its spring bias to push up 15 to close the electrical connection. In this embodiment the button 31 is operated via a mechanical linkage in the form of an armature 41 to raise the plunger 23.

In the embodiment of Figure 2 the electromagnet and the armature are replaced by an inertial detector of general construction. It consists of a spherical inertial body which is normally located in a conical seat and is biased to the rest position by the attraction of the permanent magnet under the conical sheet. A spider with three arms 54 is positioned above the inertial body to support the bottom of the plunger.

In FIG. 2, the manually operable button and plunger connection is a three-arm structure with its upper end in contact with the three arms of the spider 54 and extending across the top of the manual button 31 around the inertial detector. 55). The button 31 therefore operates independently of the inertial sensor for the movement of the spider 54.

When the circuit breaker of FIG. 2 experiences excessive acceleration causing the inertial body 51 to move away from the rest position against the attraction of the magnet 53, the spider 54 is lifted by the inertial body 51 and the plunger Raise (23) to cause the ball to move in the centrifugal direction as previously described. Similarly, pressing the manual button 31 lifts the spider with the same effect as lifting the structure 55. Once the acceleration experienced is reduced, the inertial body returns to its original stop position and the device can be reset by pressing the reset button 17 previously described.

Elements common to both embodiments of the present invention above both elements are fitted together for complete sub-assembly. As shown in FIG. 3, there is a base 57 having an elastic upright arm 58 that engages a corresponding latch 59 of the upper portion 61 of the casing 11. The component 61 comprises two shielded holes for the terminal 13 and has a central rectangular fence 62 with a groove 21 formed thereunder and an elastic cap 19 fixed thereto. The movable contactor 15 is mounted in a cage that provides a connection between the button 17 and the member 26. The plunger 23 and the ball 25 are suitably engaged in the central column of the base 57.

The lower part of the casing 11 defines a chamber for the inertial body 51 or a coil for the electromagnet plunger 41 and associated chambers. Once the small part combination described above is made, a suitable combination of parts 41 to 46 or 51 to 56 is made at the bottom and the two parts of the casing are joined to form a complete circuit breaker.

As described in detail above, the present invention provides a circuit breaker having a movable contactor and a fixed contactor so as to respond to various cases including excessive speeding, remote operation, and manual operation for electrical safety in a vehicle or the like. It is accompanied by the effect of effectively breaking the circuit.

Claims (10)

Fixed contactors; A movable contactor configured to be movable to change an electrical connection state with the fixed contactor; An actuator device that is movable between an initial position and an operating position to control the movable contactor to convert a state electrically connected to the fixed contactor between a closed position and an open position; First means for moving the actuator device to the operating position; And A circuit breaker installed independently of said first means and comprising manual means for moving said actuator device to said operating position through manual operation. The method according to claim 1, The movable device, A latch releaseable by the first means and the manual means; Circuit breakers, characterized in that said moving means are movable by releasing said latches so as to be movable independent of said first means and said manual means to change an electrical connection state with said fixed contactor. The method according to claim 1 or 2, The manual means allows the movable device to move independently of the first means. The method according to claim 1 or 2, The circuit breaker further comprises reset means for resetting the latch by moving the moving means in the opposite direction when the latch is released. The method according to claim 1 or 2, And said first means is comprised of an electromagnet having an armature made movable to move said movable device. The method according to claim 1 or 2, And said first means comprises an inertial body that is movable within the chamber for moving said movable device. The method according to claim 6, The manual means circuit breaker, characterized in that consisting of a member extending around the outer surface of the chamber. The method according to claim 7, And said manual means comprises two or more members positioned around said chamber. The method according to claim 8, Wherein the circuit breaker further comprises a spider having the same number of arms as the number of members positioned around the chamber. The method according to claim 9, And a region interworking with the movable device is located at the center of the spider.

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