KR20170087997A - automatic return device the knob of earth leakage circuit breaker - Google Patents

automatic return device the knob of earth leakage circuit breaker Download PDF

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Publication number
KR20170087997A
KR20170087997A KR1020160007556A KR20160007556A KR20170087997A KR 20170087997 A KR20170087997 A KR 20170087997A KR 1020160007556 A KR1020160007556 A KR 1020160007556A KR 20160007556 A KR20160007556 A KR 20160007556A KR 20170087997 A KR20170087997 A KR 20170087997A
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KR
South Korea
Prior art keywords
operation knob
earth leakage
leakage breaker
fixing part
return device
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Application number
KR1020160007556A
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Korean (ko)
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KR101783693B1 (en
Inventor
배수근
Original Assignee
주식회사 삼호이즈
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Priority to KR1020160007556A priority Critical patent/KR101783693B1/en
Publication of KR20170087997A publication Critical patent/KR20170087997A/en
Application granted granted Critical
Publication of KR101783693B1 publication Critical patent/KR101783693B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/22—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
    • H01H73/28—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by rotatable knob or wheel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents

Abstract

The disclosed disclosure is based on the fact that several turning links used for returning the operation knob to the ON state are formed by a single lever so that the return device can operate accurately and smoothly without malfunction so that the reliability and stability of the product can be maximized However,
An automatic return device for an operation knob for an earth leakage breaker according to an embodiment of the present invention includes:
An automatic return device of an operation knob connected to an operation knob of an earth leakage breaker to return the operation knob to switch the earth leakage breaker to an on state, comprising:
The first fixing part is rotatably connected to any position below the operation knob which is rotatably mounted on the connection block of the earth leakage breaker and the second fixing part is formed to extend in a predetermined length to one side of the first fixing part, A handle bar having a pressing surface inclined at an arbitrary angle above the first fixing part and a pressing jaw formed on the other side of the first fixing part;
A solenoid valve for rotating the operation knob when the operation knob is driven by an external electrical signal to turn the earth leakage breaker on or off, and a top end of the plunger is rotatably connected to a slot of the handlebar by a fixing pin, And an automatic return device for an operation knob for an earth leakage breaker.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an automatic return device for an earth leakage breaker,

The present invention relates to an automatic return device for an operation knob, and more particularly, to an automatic return device for an operation knob for an electric leakage breaker that automatically cuts off a current when a short circuit, a short circuit, or an overload occurs.

Generally, an earth leakage breaker is a device installed in a distribution board to automatically shut off current when a leakage current such as a short circuit occurs. The leakage circuit breaker is used to protect the load side and the human life as the leakage current or ground fault, the electric shock of the human body, the short circuit current, and the abnormal current are detected and the circuit is quickly disconnected.

Fig. 6 is a schematic view of a conventional earth leakage breaker, and Fig. 7 is a view of an automatic return device of the operation knob in the earth leakage breaker shown in Fig.

6 and 7, an automatic return device for an operation knob for a circuit breaker according to the related art includes:

An operation knob 14 embedded in the state of being protruded from the housing 11 and rotated about the rotary shaft 13 by an external power, a trip bar 15 hingedly coupled to the lower side of the operation knob 14, (14) is provided in the inner space of the earth leakage breaker (10) by using a pair of contact switches (16) formed on the bottom surface of the housing (11) The return device 20 is mounted.

The return device 20 is equipped with a pivotal lever 22 fixed to the side of the operation knob 14 so as to be rotatable along the auxiliary shaft 21 and a solenoid valve 25 operating according to an electrical signal, At least one drive link 23 hingedly connected to the plunger 25a of the solenoid valve 25 is hingedly connected to one side of the pivotal lever 22, At least one passive link (24) hingedly connected to the operation knob (14) and the trip bar (15) is hingedly connected.

A connecting link 26 is connected between the pivoting lever 22 and the driven link 24.

The automatic return device 20 of the operation knob 14 is provided with a rotation lever 22 and a drive link 23, a driven link 24 and a connection link 26 are connected to each other to operate the return device 20, the return device 20 is formed as a five-joint type connecting means, so that the manufacturing cost is excessively increased and the assembling workability is poor.

The operation of the return device 20 from the driven link 24 connected to the operation knob 14 does not coincide with the operating axes of the drive link 23 and are shifted from each other, There is a problem that not only smooth operation but also malfunction occurs.

An automatic return device for an operation knob for an earth leakage breaker is disclosed in Application No. 10-2004-0089317.

An embodiment of the present invention is a system for reducing the cost of producing the return knob by returning the operation knob to the ON state and simplifying the structure of the return knob and thereby improving workability of assembling the earth leakage breaker And relates to an automatic return device of the operation knob.

The embodiment of the present invention is characterized in that an operation knob for an earth leakage breaker is provided so that the return device is smoothly operated to secure reliability and stability by forming several turning links used for returning the operation knob to the ON state, Of the automatic return device.

To achieve these and other advantages and in accordance with the purpose of the present invention,

An automatic return device of an operation knob connected to an operation knob of an earth leakage breaker to return the operation knob to switch the earth leakage breaker to an on state, comprising:

The first fixing part is rotatably connected to any position below the operation knob which is rotatably mounted on the connection block of the earth leakage breaker and the second fixing part is formed to extend in a predetermined length to one side of the first fixing part, A handle bar having a pressing surface inclined at an arbitrary angle above the first fixing part and a pressing jaw formed on the other side of the first fixing part;

A solenoid valve for rotating the operation knob when the operation knob is driven by an external electrical signal to turn the earth leakage breaker on or off, and a top end of the plunger is rotatably connected to a slot of the handlebar by a fixing pin, And an automatic return device for an operation knob for an earth leakage breaker.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein,

An automatic return device of an operation knob connected to an operation knob of an earth leakage breaker to return the operation knob to switch the earth leakage breaker to an on state, comprising:

A first fixing part is rotatably connected to a first hinge pin which is rotatably connected to the operating knob of the earth leakage breaker and is rotatably connected to the first hinge pin and extends obliquely downward at an arbitrary angle from the first fixing part, The second fixing part being rotatably connected to a connection pin mounted at a predetermined position below the second fixing part, the handle bar extending to one end of the second fixing part so as to secure an arbitrary length and having a bent part formed at an end thereof;

A solenoid valve for restricting the bent portion of the handle bar to the fixing pin of the plunger in a free-end form in order to turn the operation knob when the electric knob is driven by application of an electrical signal from the outside to switch the electric leakage breaker to the ON or OFF state And an automatic return device for an operation knob for an earth leakage breaker.

According to the embodiment of the present invention configured as described above, since the structure of the return device for returning the operation knob to the ON state is simplified, the number of parts is reduced and the manufacturing cost is reduced, The efficiency can be improved.

Further, since several turning links used for returning the operating knob to the ON state are formed as a single lever, the return device operates accurately and smoothly without malfunction, thereby maximizing the reliability and stability of the product.

1 is a perspective view of an earth leakage breaker according to a preferred embodiment of the present invention;
2 (a), (b) and (c) are diagrams showing the use states of the handle bar and the handlebar in the earth leakage breaker shown in Fig. 1,
Fig. 3 is a diagram showing an OFF state of the earth leakage breaker in the earth leakage breaker shown in Fig. 1,
Fig. 4 is a diagram showing the on-state of the earth leakage breaker in the earth leakage breaker shown in Fig. 1,
5 (a), (b) and (c) are diagrams showing the use states of the deformed handle bars and handle bars in the earth leakage breaker shown in Fig. 1,
6 is a schematic view of a conventional circuit breaker,
Fig. 7 is a diagram of an automatic return device of the operation knob in the earth leakage breaker shown in Fig. 6;

Hereinafter, an automatic return device for an operation knob for an earth leakage breaker according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4, an automatic return device for an operation knob for an earth leakage breaker according to an embodiment of the present invention includes:

An automatic return device of an operation knob connected to an operation knob of an earth leakage breaker to return the operation knob to switch the earth leakage breaker ON, comprising:

The first fixing part 53 is fixed to the connection block 51 of the earth leakage breaker 50 at a position below the operation knob 52 rotatably mounted by the first hinge pin P1, A slot 55 is formed in the second fixing part 54 which is rotatably connected to the first fixing part 53 by a predetermined length and is extended to a predetermined length on one side of the first fixing part 53, A handle bar 58 formed with a pressing surface 56 inclined at an arbitrary angle above the fixing portion 53 and having a pressing jaw 57 at the other side of the first fixing portion 53;

(55) of the handle bar (58) for turning the operation knob (52) to turn the electric leakage circuit breaker (50) on or off when the electric actuator And a solenoid valve 60 rotatably connected to the upper end of the plunger 59 by a fixing pin 61.

At this time, preferably, the angle θ formed by the pressing surface 56 and the pressing step 57 is 90 ° to 110 °, and more preferably, the angle θ is 105 °.

The first hinge pin P1 of the operation knob 52 for returning the operation knob 52 to the initial position due to the descent of the plunger 59, The center distance between the plungers 59 becomes long, so that the size of the housing A becomes large.

On the other hand, when the angle [theta] is 90 degrees or less, the first hinge pin P1 of the operation knob 52 for returning the operation knob 52 to the initial position due to the descent of the plunger 59 And the plunger 59 is shortened, it is difficult to match the rotation angle of the operation knob 52. [

A lower portion of the operation knob 52 is provided with an elastic member 71 so as to be moved up and down by interlocking with the left and right rotation of the operation knob 52 to connect the connection terminal 67 to the input terminal D, And the pressing member 66 is restrained or released from the trip 70 to control the contact state of the connecting terminal 67 and the input terminal D at the upper end of the pressing member 66 The engaging member 65 is formed.

In the drawings, reference character A denotes a housing, B denotes an output terminal, C denotes a bimetal which is bent when an overcurrent occurs and drives the trip 70, and D denotes an input terminal.

4, when the surge current is applied to the solenoid valve 60 of the earth leakage breaker 50, the plunger 59 of the solenoid valve 60 is sucked, The slot 55 of the second fixing part 54 is fixed to the plunger 59 by the suction of the lancer 59 and the one end of the handle bar 58 fixed by the fixing pin 61 (To be referred to as a side 54) of the connecting pin 62 in the vertical direction while rotating the connecting pin 62 counterclockwise about the central axis.

At this time, the operation knob 52 is rotated counterclockwise about the first hinge pin P1 as a center axis by the pressing jaw 57 of the handle bar 58. [

The fixing pin 61 that rotatably fixes the handle bar 58 to the plunger 59 is positioned at the inner circumferential edge of the slot 55 of the second fixing part 54. Therefore, the plunger 59 is not further lowered.

The operation knob 52 rotatably fixed by the first hinge pin P1 to the linkage 51 due to the descent of the plunger 59 is moved to the center of the first hinge pin P1 The lower portion of the operation knob 52 fixed to the first fixing portion 53 of the handle bar 58 is rotated counterclockwise about the first hinge pin 53 as a center axis, Direction.

When the operating knob 52 is rotated in the counterclockwise direction, the connecting pin 62 connecting the operating knob 52 and the connecting rod 51 is lowered by an arbitrary height, and the slot 51a ) In the lower end of the lower portion.

When the operation knob 52 is lowered along the slot 51a when the operation pin 52 is rotated counterclockwise about the first hinge pin P1 as the center axis, And the locking member 65 is pressed in the vertical direction by the rotation. The engaging member 65 is vertically lowered to press the pressing member 66 and the pressing member 66 presses the connecting terminal 67 so that the connecting terminal 67 is grounded, ) Is maintained in the ON state.

3, when the surge current applied to the solenoid valve 60 disappears after a lapse of a predetermined time, the plunger 59 of the solenoid valve 60 protrudes upward The fixing pin 61 which rotatably fixes the plunger 59 to the slot 55 of the second fixing portion 54 is positioned at a middle position of the slot 55).

The plunger 59 is lifted to rotate the handle bar 58 clockwise about the first hinge pin P1 as a center axis.

The first fixing part 53 of the handle bar 58 is rotated in the clockwise direction around the first hinge pin P1 so that the first hinge pin P1 ) In the clockwise direction and is elevated by an arbitrary height.

The operating knob 52 presses the engaging protrusion 52a of the operating knob 52 by the pressing surface 56 of the handle bar 58 so that the operating knob 52 rotates about the first hinge pin P1 And is rotated clockwise.

At this time, when the operation knob 52 is rotated, the connecting pin 62 connecting the operating knob 52 and the connecting rod 51 ascends by an arbitrary height along the slot 51a of the connecting rod 51, .

Therefore, the latching member 65, which is tentatively supported by the rotation of the operation knob 52, is raised, and the pressing member 66 pressing the connection terminal 67 is elastically pressed upward, 67 are raised and short-circuited to keep the earth leakage breaker 50 in the OFF state.

5 (a), (b) and (c), an automatic return device for an operation knob for an earth leakage breaker according to another embodiment of the present invention

An automatic return device of an operation knob connected to an operation knob of an earth leakage breaker to return the operation knob to switch the earth leakage breaker to an on state, comprising:

A first fixing part (80) is rotatably connected to a first hinge pin (P1) mounted on a connecting rod (51) of the earth leakage breaker (50) and rotatably connecting the operating knob The second fixing portion 81 is rotatably connected to the second hinge pin P2 extended downward at an arbitrary angle to the lower portion of the operation knob 52 and mounted at a predetermined position below the operation knob 52 A handle bar 58 extending to one side of the second fixing part 81 so as to secure an arbitrary length and having a bent part 61 at an end thereof;

(52) of the handle bar (58) in order to turn the earth leakage breaker (50) to the ON or OFF state when the operation knob (52) 82 to the fixing pin 61 of the plunger 59 in a free-end form.

The handle bar (58)

A protrusion 59 formed at an outer end of the bent portion 82 for preventing the handle bar 58 from being detached from the fixing pin 61 of the plunger 59 when the plunger 59 is driven, (83).

At this time, when the surge current applied to the solenoid valve 60 disappears and the plunger 59 is projected upward, the handle bar 58 is rotated clockwise about the first hinge pin P1 as a center axis So that the operation knob 52 is rotated in the clockwise direction. The connection pin 62 is lifted to the inner peripheral upper end of the slot 51a of the connection block 51 by the rotation of the operation knob 52, (67) is short-circuited to maintain the OFF state of the earth leakage breaker (50)

When the surge current is applied to the solenoid valve 60 and the plunger 59 is sucked in the vertical direction, the handle bar 58 is rotated counterclockwise about the first hinge pin P1 as a center axis The operation knob 52 is rotated so that the connection pin 62 can be lowered to the peripheral lower end of the slot 51a of the connection block 51. [ Therefore, in order to maintain the on-state of the earth leakage breaker 50 by grounding the connection terminal 67 due to the lowering of the latching member 65,

A bent portion 82 extended to one end of the second fixing portion 81 of the handle bar 58 and secured to the fixing pin 61 of the plunger 59 in a free- The configuration except for the handle bar 58 in the form of a single lever formed at the end portion is the same as that of the automatic return device for the operation knob for the earth leakage breaker according to the embodiment of the present invention, Brief description of the drawings.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims. And changes may be made without departing from the spirit and scope of the invention.

50; Earth leakage breaker
51; Connections
52; Operation knob
53; The first fixing part
54; The second fixing portion
56; Pressure face
57; Pressure jaw
58; Handlebar
59; Plunger
60; Solenoid valve
61; Fixing pin
62; Connecting pin
65; Engaging member
66; Pressing member
67; Connection terminal

Claims (4)

An automatic return device of an operation knob connected to an operation knob of an earth leakage breaker to return the operation knob to switch the earth leakage breaker to an on state, comprising:
The first fixing part is rotatably connected to any position below the operation knob which is rotatably mounted on the connection block of the earth leakage breaker and the second fixing part is formed to extend in a predetermined length to one side of the first fixing part, A handle bar having a pressing surface inclined at an arbitrary angle above the first fixing part and a pressing jaw formed on the other side of the first fixing part;
A solenoid valve for rotating the operation knob when the operation knob is driven by an external electrical signal to turn the earth leakage breaker on or off, and a top end of the plunger is rotatably connected to a slot of the handlebar by a fixing pin, And an automatic return device for an operation knob for an earth leakage breaker. The method according to claim 1,
Wherein an angle formed by the pressing surface and the pressing jaw is formed in a range of 90 to 110 degrees. An automatic return device of an operation knob connected to an operation knob of an earth leakage breaker to return the operation knob to switch the earth leakage breaker to an on state, comprising:
A first fixing part is rotatably connected to a first hinge pin which is rotatably connected to the operating knob of the earth leakage breaker and is rotatably connected to the first hinge pin and extends obliquely downward at an arbitrary angle to the first fixing part, The second fixing part being rotatably connected to a connection pin mounted at a predetermined position below the second fixing part, the handle bar extending to one end of the second fixing part so as to secure an arbitrary length and having a bent part formed at an end thereof;
A solenoid valve for restricting the bent portion of the handle bar to the fixing pin of the plunger in a free-end form in order to turn the operation knob when the electric knob is driven by application of an electrical signal from the outside to switch the electric leakage breaker to ON or OFF state And an automatic return device for an operation knob for an earth leakage breaker. 4. The apparatus of claim 3, wherein the handle bar
And an escape prevention protrusion formed at an outer end of the bent portion to prevent the handle bar from being separated from the support pin of the plunger when the plunger is driven. Device.
KR1020160007556A 2016-01-21 2016-01-21 automatic return device the knob of earth leakage circuit breaker KR101783693B1 (en)

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Application Number Priority Date Filing Date Title
KR1020160007556A KR101783693B1 (en) 2016-01-21 2016-01-21 automatic return device the knob of earth leakage circuit breaker

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Application Number Priority Date Filing Date Title
KR1020160007556A KR101783693B1 (en) 2016-01-21 2016-01-21 automatic return device the knob of earth leakage circuit breaker

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KR20170087997A true KR20170087997A (en) 2017-08-01
KR101783693B1 KR101783693B1 (en) 2017-11-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102329552B1 (en) * 2021-03-26 2021-11-23 주식회사 텔라움 Auto recovery type circuit breaker

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102539220B1 (en) * 2021-06-14 2023-06-01 차기만 Handle driving apparatus for a leakage breaker with automatic recovery function

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100771921B1 (en) * 2006-10-17 2007-11-01 엘에스산전 주식회사 Counter apparatus for air circuit breaker
KR101028656B1 (en) * 2010-12-30 2011-04-11 장영식 Automatic return apparatus the knob of earth leakage circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102329552B1 (en) * 2021-03-26 2021-11-23 주식회사 텔라움 Auto recovery type circuit breaker

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