KR20080046412A - Automatic recovery type leakage breaker of motor driving method - Google Patents

Abstract

An automatic recovery type leakage breaker of a motor driving scheme is provided to reduce a manufacturing cost by automatically recovering a power with a micro motor and a decelerator. A passive lever rotation axis(101) is installed on a main body(100). A passive lever(102) is rotatably coupled to the rotation axis. A lower contact point(103) is coupled to a power. An upper contact point(104) is lifted upward or downward by a switching operation of the passive lever. A lower contact point spring(105) provides a recovering force to the lower contact point. A rotation axis spring(106) provides a recovering force to the passive lever. A connection unit connects the passive lever to the upper contact point. A vertical guide bar(109) guides the connection unit. A guide bar rib(109b) limits an operation distance. A horizontal latch bar(111) holds or releases the vertical guide bar. A latch bar spring(112) maintains an elastic force of the horizontal latch bar. A micro motor rotates the passive lever to recover the upper/lower contact points. A decelerator increases a rotation force of the micro motor. A rotation cam(118) is coupled to the decelerator and rotates the passive lever passive lever.

Description

    Automatic Recovery Type Leakage Breaker of Motor Driving Method

1 is a cross-sectional view showing an automatic return device of a conventional operation knob for an earth leakage breaker;

Figure 2 is an operation showing the automatic return device of the conventional operation knob for earth leakage breaker.

Figure 3 is an assembly stage of the automatic recovery type earth leakage breaker of the motor drive system according to the present invention.

4 is a perspective view of a motor-driven self-recovering type earth leakage breaker according to the present invention.

5 is an exploded view of an auto-recovery type leakage circuit breaker of a motor driving method according to the present invention.

      try.

Figure 6 is a manual level of the automatic recovery type earth leakage breaker of the motor drive method according to the present invention

      Bur "on" also works.

Figure 7 is a motor of the automatic recovery type earth leakage breaker of the motor drive method according to the present invention

      Only operation.

Figure 8 is an automatic recovery of the automatic recovery type earth leakage breaker of the motor drive method according to the present invention

      Perspective view showing recovery operation.

Figure 9 is an automatic recovery of the automatic recovery type earth leakage breaker of the motor drive method according to the present invention

      Section showing recovery operation.

* Description of the main parts of the drawings

100: main body 101: manual lever rotating shaft

102: manual lever 102a: protrusion

102b: inclined portion 103: lower contact

103: lower contact 104: upper contact

105: lower contact spring 106: pivot shaft spring

109b: Guide bar rib 109: Vertical guide bar

110: ODP 111: horizontal latch bar

112: latch bar spring 117: micro motor

117a: reducer 118: rotary cam

The present invention is an automatic leakage circuit breaker which is installed in order to prevent damage to the product, damage or human life due to electric shock due to a short circuit or lightning, etc. The motor drive system can minimize the damage to important products and facilities operated using electricity by automatically recovering the interrupted power after the cause of interruption is eliminated so that the power can be supplied again quickly. It is about automatic recovery type earth leakage breaker.

As is well known, such a motor-driven self-recovering type earth leakage breaker has been conventionally disclosed in Korean Patent No. 10-0470435 (Invention: Automatic return device of an earth leakage breaker operation knob; hereafter referred to as 'citation invention'). There is an application, which is illustrated in FIGS.

As shown therein, the operating knob 14 is built into the housing 11 in a protruding state, and is hingedly coupled to the lower side of the operation knob 14 by rotating the rotary shaft 13 around the center point by external power. An earth leakage circuit breaker configured to open and close a pair of contact switches 16 formed on the bottom surface of the housing 11 by using the trip bar 15, wherein an auxiliary shaft ( A rotating lever 22 which is rotatable along 21 and a solenoid valve 25 acting according to an electrical signal are mounted, and a plunger 25a of the solenoid valve 25 is provided at one side of the rotating lever 22. At least one drive link 23 connected in a hinged manner and hinge-connected, at least one hinge-connected to the operation knob 14 and the trip bar 15 on the other side of the pivot lever 22. A ground fault, characterized in that the driven link 24 is hingedly connected. The device will be automatically returned to the control knob for short.

Referring to the operation state of the cited invention, first, when the surge current is applied to the solenoid valve 25 of the earth leakage breaker 10 to generate the electromagnetic force, the plunger 25a is sucked as shown in FIG. The rotating lever 22 connected to the drive link 23 to 25a rotates counterclockwise. For this reason, the operation knob 14 connected to the rotation lever 22 via the driven link 24 is pulled and rotated counterclockwise. In addition, since the trip bar 15 connected to the operation knob 14 through the driven link 24 is downward, the push bar 15a mounted on the trip bar 15 presses the contact switch 16 to release the earth leakage breaker. Keep it 'on'.

On the other hand, when the surge current applied to the solenoid valve 25 disappears after a predetermined time elapses, as shown in FIG. 2A, the plunger 25a protrudes, and thus, the rotation lever connected to the plunger 25a through the drive link 23. (22) rotates clockwise. For this reason, the operation knob 14 connected to the rotation lever 22 via the driven link 24 rotates clockwise.

In addition, since the trip bar 15 connected to the operation knob 14 via the driven link 24 is upward, the push bar 15a holding the contact switch 16 is returned to its original state, and the earth leakage breaker is 'off'. Keep it in a state.

This cited invention consists of an earth leakage breaker and automatically returns the operation knob to rotate along the hinge axis.If the earth leakage breaker is 'on', when a certain time elapses, the operation knob is automatically operated without the continuous driving current of the solenoid. Is returned to minimize the power consumption of implementing the mechanism in the ground fault circuit breaker, and it also has the effect of minimizing additional losses such as food decay due to the continuous interruption of the power supply, but the voltage of the supplied power supply is high or low. In irregular cases, there is a problem in that the solenoid cannot be smoothly operated. Especially, the inrush current for starting the solenoid reaches about 7 times the normal current. Require frequent maintenance Which it will have a problem.

      The object of the present invention is to solve the above problems,

In an earth leakage circuit breaker in which the ODP operates to cut off the power due to overcurrent or lightning, after the power is applied, the power is turned off after a predetermined time by using a micro motor with low current consumption and a reduction gear to increase the torque. It is to provide a motor-driven auto-recovery type circuit breaker to recover the power supply automatically after the cause of the interruption disappears.

In order to achieve the above object, the present invention is known in that the return operation of the operation lever is made by the solenoid suction force,

In order to manually turn on or off the power supplied from the power supply side, a manual lever hinged to the fixed shaft of the main body to rotate and a projection piece are formed on the side of the rotation section of the manual lever. Cam to rotate while pushing up, micro motor with reducer to ensure the cam's rotational force, and connected to one side of the manual lever and one side of the main body at the bottom to restore to the off state when the manual lever is on A spring for providing a restoring force, a vertical link and a vertical lever that are coupled to stand or bend in a vertical state under the rotational force of the manual lever, and a direction in which the vertical link and the vertical lever stand or break vertically without departing from their position. The vertical guide bar to guide the wheel, the bottom contact connected to the power supply, and the pressure It is to have a top contact for supplying power to the load side in contact with the bottom contact.

Accordingly, the present invention, unlike the conventional solenoid type recovery device, by using a micro-motor can be driven with a small current, there is no fear of burnout, the number of parts required is extremely small and simple to improve productivity as well as manufacturing cost There is an effect that can be significantly reduced.

The present invention will be described with reference to the accompanying drawings.

Figure 3 is a cross-sectional view of the self-recovering type earth leakage breaker of the motor drive method according to the invention, Figure 4 is a perspective view of the self-recovering type earth leakage breaker of the motor drive method according to the present invention, Figure 5 is a motor drive according to the present invention The exploded perspective view of the automatic recovery type earth leakage breaker of the type is shown.

As shown in this figure, a projection piece coupled to the manual lever pivot shaft 101 installed on the main body 100 to turn on or off to supply the power supplied from the power supply side to the load side and becomes a rotation section. A rotating cam 118 installed at a lower portion of the projection piece 102a to rotate the manual lever 102 and the manual lever 102 so that the manual lever 102 can be restored to a power-on state when it is automatically operated. And a reducer 117a and a micromotor 117 to allow the rotational cam 118 to sufficiently rotate the manual lever 102, and are connected to a power source and are made of a conductive metal piece to be compressed. In order to be energized at the time of falling off the contact is fixed to the lower contact 103, the upper and lower according to the opening and closing operation of the manual lever 102 while maintaining the compression or spacing with the lower contact 103 in the upper portion of the lower contact 103 The lower contact spring 105 for providing the restoring force when the lower contact 103 rises to be restored below the lower contact 103, the lower contact spring 103, and the manual lever 102 attempt to recover. The upper contact 104 and the lower contact 103 are brought into contact with or released from the rotation shaft spring 106 fitted to the manual lever pivot shaft 101 and the manual lever 102 to provide a restoring force. In order to ensure that one end is connected to the manual lever 102 and the other end is connected to the upper contact 104, the connecting means arranged in the vertical link 107 and the vertical lever 108 connected by the link axis 107a at the center And, to guide the vertical link 107 and the vertical lever 108 to move up and down in the standing state is formed a link shaft guide port 109a made of long holes, one end is connected to the main body 100, the other end is a movable vertical guide Vertical link around bar 109 and link axis 107a Guide bar ribs 109b provided on one side of the main body so as to limit the moving distance of the vertical guide bar 109 so that the 107 and the vertical lever 108 do not exceed the limit of the standing angle, and the manual lever 102 In the on state, the vertical lever 108 and the vertical link 107 are lowered so that the vertical guide bar 109 is locked so that the upper and lower contacts 104 and 103 can be completely in contact with each other. Alternatively, the vertical link bar 107 and the vertical lever 108 may be bent by the ODP 110 to turn off the upper and lower contacts 104 and 103 due to the overcurrent, and the vertical guide bar may be raised as the standing state is released. In order to release the locking state of the 109, the horizontal latch bar 111, the guide bar locking jaw (109c) is formed, and the horizontal latch bar 111 to maintain the elasticity that can hang or loosen the vertical guide bar 109 One end is fixed to the main body and the other end is horizontal latch It is to be provided with a latch bar spring 112 connected to one side of the bar (111).

Referring to the accompanying drawings, the operation of the present invention is as follows.

6 is a cross-sectional view illustrating a state in which power is supplied by operating the manual lever 102 in an on position in a lever pivot structure of an earth leakage breaker according to the present invention. When the manual lever 102 is operated and pushed to the " on " position, the manual lever 102 overcomes the elasticity of the rotation shaft spring 106 and rotates about the manual lever rotation shaft 101 to be perpendicular to the manual lever 102. The link 107 and the vertical lever 108 connected thereto are pushed downward. The vertical link 107 and the vertical lever 108 are coupled to each other by the link axis 107a at the center of the link shaft 107a. The tip portion is coupled to the link shaft guide opening 109a formed in the vertical guide bar 109, the side of the vertical guide bar 109 touches the guide bar rib 109b formed in the main body 100, the end of which is horizontal The guide bar engaging jaw 109c formed in the Chiba 111 is to be connected to the vertical link 107 and the vertical lever 108 is not bent be able to maintain the state standing up and down vertically. Therefore, the upper contact point 104 is connected to the vertical lever 108 and pressed so that the lower contact point 103 may be in contact with the lower contact point 103 so that power may be supplied to the load side through the lower contact point 103 and the upper contact point 104. Will be.

In addition, when power is being supplied while the upper contact 104 and the lower contact 103 are in contact with each other, overcurrent flows due to a short circuit or an overload on the load side, thereby preventing occurrence of an electric fire or human accident. In order to install the ODP (Oil Dash Pot) so that the power can be automatically cut off, the operation of the power cut off by this ODP will be described with reference to FIG.

As shown here, one end of the coarse copper wire 113 wound on the iron core 114 is connected to the upper contact point 104, but the other end is connected to the load, but the ODP 110 is connected to the single phase. In the case of being installed in each of the two power lines, the power supply is connected to the load side through the copper wire 113, so the iron core 114 wound around the copper wire 113 by the current flowing in the copper wire is a predetermined magnetic force is generated If a large current flows in the copper wire 113 when a sudden overcurrent flows while operating in a state, the iron core 114 on which the copper wire 113 is wound generates strong magnetic force and pulls the iron piece 115 installed on the upper side of the iron piece 115. The front end 116 is to raise the horizontal latch bar (111). In this way, when the horizontal latch bar 111 is in contact with the tip end portion 116 around the latch bar rotation shaft 111a, the opposite side formed with the guide bar locking jaw 109c wins the elasticity of the latch bar spring 112, Since the vertical guide bar 109 is to be moved away from the guide bar engaging jaw (109c), the vertical guide bar 109 is fitted to the link shaft guide port (109a) formed in the vertical guide bar 109 is coupled by the link shaft 107a and vertical The vertical link 107 and the vertical lever 108, which maintain the standing state, are forced upward by the elasticity of the lower contact spring 105 supporting the lower contact 103 coupled thereto. Since it is lost and bent, the upper and lower contacts 104 and 103 may fall even when the position of the manual lever 102 is at the "on" side to cut off the power supplied to the load, thereby preventing an electric fire or a human accident. With The other hand, the manual lever 102 will be rotated to the off position by the resiliency of the spring pivot shaft 106. The

In this way, while operating the manual lever 102 to the on position while supplying power, the manual lever 102 automatically moves to the off position due to overload or lightning, so that the power supply is cut off for a long time, Inconvenience of not using the facilities operated by using and a fatal damage to the management of food, such as a refrigeration facility is generated, so the action that can quickly recover the power cut off by the automatic recovery type circuit breaker of the motor drive method of the present invention 8 to 9 will be described as follows.

Although not shown in the figure, if the cause of the power interruption is a short circuit or a lightning strike, it is determined that there is no problem of a fire or an electric shock. When the cause is eliminated and the micro motor 117 is driven by the motor driving unit, the rotational force is increased while being decelerated through the reducer 117a to rotate the rotary cam 118 in a clockwise direction. As such, the protrusion piece 102a formed on the side of the manual lever 102 in the off position is raised upward by the rotation of the rotary cam 118. The inclined portion 102b is formed on one side of the protrusion piece 102a. Since the rotating cam 118 is rotated while sliding along the inclined portion (102b) will be able to rotate the manual lever 102 to the on position smoothly. In addition, in order to allow the manual lever 102 to rotate and stop at the on position, a micro switch is installed at a predetermined position where the rotary cam 118 rotates to connect the power supplied to the micro motor 117 through the micro switch. By rotating the rotary cam 118, the protrusion piece 102a is completed to rise, and then presses the knob of the micro switch to be turned off so that the power supplied to the micro motor 117 is cut off so that the micro motor 117 is turned off. It was to stop the rotation. By the projection piece 102a, the manual lever 102 overcomes the elasticity of the rotational shaft spring 106 and rotates about the manual lever rotational shaft 101 to the vertical link 107 connected to the manual lever 102, The vertical lever 108 connected thereto is pushed downward, and in the state where the vertical link 107 and the vertical lever 108 are coupled by the center link shaft 107a, the tip portion of the link shaft 107a is vertical guide bar. It is coupled to the link shaft guide 109a formed in the 109, the side of the vertical guide bar 109 touches the guide bar rib 109b formed in the main body 100, the end is formed in the horizontal latch bar 111 The hooking portion of the guide bar engaging jaw (109c) is to maintain the vertical standing and lowered state of the vertical link 107 and the connection portion of the vertical lever 108 vertically without bending. Therefore, the upper contact 104 is connected to the vertical lever 108 is pressed to be in contact with the lower contact 103 can be restored to the power-on state.

In this way, the present invention can automatically recover the power cut off by the micro motor and the speed reducer which can be driven with low current, and can significantly reduce the occurrence of defects due to burnout, etc., compared to the conventional solenoid method. The manufacturing cost can be reduced by minimizing the number and size of the whole, and it is possible to achieve the object of the present invention by replacing only a few parts in a new product as well as an existing product which is not equipped with an automatic recovery device.

Claims (3)

The manual lever rotating shaft 101 installed on the main body 100, the manual lever 102 coupled to and rotated, the lower contact 103 connected to the power supply, and the vertical lever up and down according to the opening and closing operation of the manual lever 102. A lower contact spring 105 for providing a restoring force to the upper contact 104, a lower contact 103, a pivot shaft spring 106 for providing a restoring force to the manual lever 102, and a manual lever ( A connecting means connecting the 102 and the upper contact 104, a vertical guide bar 109 for guiding the connecting means, a vertical guide bar 109, a guide bar rib 109b for limiting the working distance, The horizontal guide bar 111 for catching or releasing the vertical guide bar 109, the latch bar spring 112 for maintaining elasticity on the horizontal latch bar 111, and the ODP 110 due to overcurrent or lightning. ) Rotates the manual lever 102 to restore the upper and lower contacts 104 and 103 where the contact is broken. Micro-motor 117, a reduction gear 117a for increasing the rotational force of the micro-motor 117, and a rotation cam 118 for rotating the manual lever 102 in connection with the reduction gear 117a, Motor-driven automatic recovery type earth leakage breaker, characterized in that. The method according to claim 1, The above-described manual lever 102 is a motor-driven automatic recovery type circuit breaker, characterized in that the projection piece (102a) is formed on one side. The method according to claim 2, The above-mentioned protrusion piece (102a) is an auto-recovery type earth leakage breaker of the motor drive method, characterized in that the inclined portion (102b) is formed.

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