KR200489570Y1 - Locking assembly for switch of manual motor starters - Google Patents

Locking assembly for switch of manual motor starters Download PDF

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Publication number
KR200489570Y1
KR200489570Y1 KR2020150008654U KR20150008654U KR200489570Y1 KR 200489570 Y1 KR200489570 Y1 KR 200489570Y1 KR 2020150008654 U KR2020150008654 U KR 2020150008654U KR 20150008654 U KR20150008654 U KR 20150008654U KR 200489570 Y1 KR200489570 Y1 KR 200489570Y1
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KR
South Korea
Prior art keywords
switch
side plate
circuit breaker
insertion tube
protection circuit
Prior art date
Application number
KR2020150008654U
Other languages
Korean (ko)
Other versions
KR20170002471U (en
Inventor
황적성
Original Assignee
엘에스산전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Priority to KR2020150008654U priority Critical patent/KR200489570Y1/en
Publication of KR20170002471U publication Critical patent/KR20170002471U/en
Application granted granted Critical
Publication of KR200489570Y1 publication Critical patent/KR200489570Y1/en

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    • 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
    • H01H71/1054—Means for avoiding unauthorised release
    • 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
    • H01H71/54—Manual reset mechanisms which may be also used for manual release actuated by tumbler
    • 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
    • H01H71/60—Manual reset mechanisms which may be also used for manual release actuated by closure of switch casing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Power Engineering (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

A switch lock assembly for a motor protection circuit breaker is disclosed.
According to an embodiment of the present invention, there is provided a switch lock assembly for a motor protection circuit breaker capable of locking a rocker type switch, comprising: a first body disposed through a switch; a first body passing through the switch on the opposite side of the first body, And a second body which is connected to the switch and is pulled out of the switch when the switch is locked to block the on-direction pressing operation of the switch.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a switch locking assembly for a motor protection circuit breaker,

The present invention relates to a switch lock assembly for a motor protection circuit breaker, and more particularly, to a switch lock assembly for a motor protection circuit breaker that prevents the ON operation of a rocker type switch and improves the safety of the product.

The motor protection circuit breaker (Manual Motor Starter, MMS) is used to prevent the motor from generating abnormal current and to protect the motor from short circuit.

Particularly, a circuit breaker for motor protection is widely used as an overcurrent protection device in a place where a motor is used. For example, it is widely used in a factory, a switchboard in a building, a panel of a motor control panel, and a hardware device.

Such a motor protection circuit breaker is divided into a high-break-down type having a rotary type switch and a standard type having a rocker type type switch. Among them, in the case of a motor protection circuit breaker having a rotary type switch, there is a locking structure for preventing the switch from being turned on, and some functions for installing a safety lock by installing a separate locking device have been introduced .

However, in the case of a motor protection circuit breaker having a standard type rocker-type switch, a lock structure that prevents the on-operation of the switch itself has not been introduced so far.

FIG. 1 is a view showing a state in which a rocker-type switch of a conventional motor protection circuit breaker is in an On state.

Referring to Fig. 1, the illustrated motor protection circuit breaker 1 includes a main body 3 and a cover 5 coupled to the top of the main body 3. Fig. An upper portion of the cover 5 is provided with a rocker type switch 10 which can be operated by being pushed in an on / off direction.

Particularly, the rocker-type switch 10 shown in Fig. 1 is pushed so that the motor protection circuit breaker 1 is turned on.

FIG. 2 is a view showing a state in which a rocker-type switch of a conventional motor protection circuit breaker is in an off state.

Referring to FIG. 2, the rocker-type switch 10 is pushed in the opposite direction to that shown in FIG. 1, and the motor protection circuit breaker 1 is turned off by the operation of the rocker- Off state.

However, in the conventional rocker type switch 10, when the motor protection circuit breaker 1 is operated to the off state, a circular hole (hereinafter, referred to as " hollow "Quot;) < / RTI >

A separate locking device is inserted and fixed through the hollow 11 so that a part of the rocker type switch 10 located at the upper part of the hollow 11 is not pushed inward of the cover 5. Thus, unlike the operator's intention, the motor protection circuit breaker 1 is prevented from being changed from the off state to the on state.

Unlike a rotary type switch, the locker type switch of the motor protection circuit breaker according to the conventional method does not have a lock structure for preventing the on-operation of the breaker by itself, and it is inconvenient to use a separate lock device at all times I followed.

A prior art related to the present invention is the Korean Utility Model Registration No. 20-0415995, which discloses a motor protection circuit breaker.

The object of the present invention is to provide a switch lock assembly for a motor protection circuit breaker which improves the safety of the product by enhancing the locking function of the rocker type switch of the motor protection circuit breaker.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be understood by those skilled in the art from the following description.

According to an embodiment of the present invention, there is provided a switch lock assembly for a motor protection circuit breaker capable of locking a rocker type switch, comprising: a first body disposed through the switch; And a second body connected to the first body through the switch at the opposite side of the first body and disconnected from the switch when the switch is locked to block the on- A switch lock assembly for a motor protection circuit breaker.

Preferably, the first body includes a first side plate formed to face one side of the switch, and a first insertion tube connected to an inner center of the first side plate and inserted through the switch The second body may include a second side plate facing the other side of the switch and a second insertion tube connected to an inner center of the second side plate and inserted through the switch have.

In addition, the first side plate may have a fastening protrusion, and the fastening protrusion may be fastened through a fastening hole formed on one side of the switch to prevent the first body from flowing.

The first insertion tube has an annular protrusion on its outer circumference, an inner circumference surface of the second insertion tube is provided with a receiving groove for receiving the annular protrusion, and the first body and the second body The annular projection may be seated in the receiving groove.

In addition, the second insertion tube may have an annular projection on its outer circumference, an inner circumferential surface of the first insertion tube may have a receiving groove for receiving the annular projection, and the first body and the second body The annular projection may be formed to be seated in the receiving groove.

In addition, the upper end of the switch may be formed to have a flat surface for holding the second side plate.

The second side plate may further include an upwardly extending extension grip.

The cover of the motor protection circuit breaker may be provided with a guide groove for guiding the second body.

The guide groove may have a protruding protrusion protruding from the upper surface of the cover to prevent the second body from being detached when the second body is pulled out.

According to the present invention, since the lock assembly for locking and fixing the locker type switch can be held by itself, it is possible to easily and easily prevent the locker type switch from being changed to the On state without a separate locking device.

In addition, according to the present invention, when a lock assembly provided in a rocker type switch is used together with a separate lock device that has been used previously, the lock state can be maintained and thus the locking function can be enhanced.

FIG. 1 is a view showing a state in which a rocker-type switch of a conventional motor protection circuit breaker is in an On state.
FIG. 2 is a view showing a state in which a rocker-type switch of a conventional motor protection circuit breaker is in an off state.
FIGS. 3 and 4 are perspective views briefly showing the state before and after the locking operation of the switch lock assembly of the circuit breaker for protecting a motor according to an embodiment of the present invention. FIG.
FIGS. 5 and 6 are views showing operation states before and after a lock operation of the switch lock assembly of the circuit breaker for motor protection according to an embodiment of the present invention.
7 is an enlarged view of a switch lock assembly according to an embodiment of the present invention coupled to a rocker type switch.
8 is an enlarged view of only a rocker-type switch in which a switch lock assembly according to an embodiment of the present invention is detached.
FIG. 9 is an enlarged view of only a first body of a switch lock assembly according to an embodiment of the present invention; FIG.
10 is a view showing a switch lock assembly of a circuit breaker for motor protection according to another embodiment of the present invention.
11 is a view showing a switch lock assembly of a circuit breaker for motor protection according to another embodiment of the present invention.

Hereinafter, a switch lock assembly for a motor protection circuit breaker according to a preferred embodiment of the present invention will be described in detail.

The motor protection circuit breaker (Manual Motor Starter, MMS) is used to prevent the motor from generating abnormal current and to protect the motor from short circuit. Particularly, a circuit breaker for motor protection is widely used as an overcurrent protection device in a place where a motor is used. For example, it is widely used in a factory, a switchboard in a building, a panel of a motor control panel, and a hardware device.

FIGS. 3 and 4 are perspective views briefly showing the state before and after the locking operation of the switch lock assembly of the circuit breaker for protecting a motor according to an embodiment of the present invention. FIG.

Referring to FIGS. 3 and 4, the switch lock assembly 100 according to an embodiment of the present invention includes a first body 110 and a second body 130.

Here, the switch 10 (see FIG. 5) refers to a rocker type switch.

The first body 110 is disposed through the switch 10 (see FIG. 5) and may be fixed to one side of the switch to prevent flow.

The second body 130 may be disposed to pass through the switch 10 (see FIG. 5) on the opposite side of the first body 110 and may be connected to the first body 110.

The second body 130 may be pulled out from the first body 110 to the other side of the switch 10 when the switch 10 is locked in the off state as shown in FIG. . Thus, the on-direction pressing operation of the switch 10 can be interrupted.

Fig. 4 is a view after the locking operation of the switch lock assembly, showing the second body drawn out from the first body in the lengthwise extension direction. Fig.

Referring to FIG. 4, the first body 110 includes a first side plate 111, and a first insertion tube 113.

The first side plate 111 is formed to face one side of the switch 10 (see FIG. 5), and may be formed in the shape of an annular plate.

The first insertion tube 113 is connected to the center of the inner side of the first side plate 111 and may be inserted through the switch 10 (see FIG. 5).

Meanwhile, the second body 130 includes a second side plate 131 and a second insertion tube 133.

The second side plate 131 may be formed to face the other side of the switch 10 (see FIG. 5), and may be formed in the shape of an annular plate.

And may have the same size and shape as the first side plate 111, but is not limited thereto.

The second insertion tube 133 may be connected to the inner center of the second side plate 131 and inserted through the switch 10 (see FIG. 5).

Specifically, the second insertion tube 133 may be coupled to surround the outer surface of the first insertion tube 113.

In other words, the inner diameter of the second insertion tube 133 may be larger than the outer diameter of the first insertion tube 113, and the second insertion tube 133 may be formed in the first insertion tube 113 And can be moved back and forth.

Alternatively, although not shown separately, the first insertion tube 113 may be coupled to surround the outer surface of the second insertion tube 133.

FIGS. 5 and 6 are views showing operation states before and after a lock operation of the switch lock assembly of the circuit breaker for motor protection according to an embodiment of the present invention.

5, the first body 110 and the second body 130 constituting the switch lock assembly 100 are provided on one side and the other side of the switch 10, . This shows a state before the switch 10 is locked in the off state. That is, it shows a state in which the on-direction pushing operation of the switch 10 is possible.

The guide groove 151 may be formed at the other side of the switch 10 with a predetermined length through the upper surface of the cover 5 of the circuit breaker 1 for protecting the motor. A protruding protrusion 153 may be provided at the distal end of the protrusion 153.

Most of the motor protection circuit breaker 1 includes a main body 3 and a cover 5 covering the top of the main body 3. The guide groove 151 is formed through the cover 5.

The guide groove 151 allows the second body 130 to be drawn out to the other side of the switch 10 and accurately guides the second body 130 to be drawn out.

Referring to FIG. 6, it can be seen that the second body 130 is drawn to the other side of the switch 10 through the guide groove 151 (see FIG. 5).

The second insertion tube 133 is drawn out to the other side of the switch 10 and the second side plate 131 is connected to the protruding jaw provided at the end of the guide groove 151 (Not shown).

The protruding protrusion 153 restricts the pull-out distance of the second body 130 drawn out by the guide groove 151 (see FIG. 5) so that the second body 130 is separated from the apparatus .

Preferably, the protruding jaws 153 may protrude from the second body 130 at a maximum withdrawal position to prevent the second body 130 from being separated from the second body 130, for example, And can have various shapes.

 7 is an enlarged view of a switch lock assembly according to an embodiment of the present invention coupled to a rocker type switch.

Referring to FIG. 7, the rocker-type switch 10 is provided on the cover 5 of the circuit breaker for protecting the motor, and the switch 10 is pressed in the off state.

The first body 110 and the second body 130 included in the switch lock assembly 100 are disposed to face one side and the other side of the switch 10, So that the second body 130 can be drawn out from the first body 110.

At this time, a flat surface 10a may be formed on the upper end of the switch 10. [ The flat surface 10a is formed so that a user can easily grasp the second side plate 131 for drawing out the second body 130. The upper surface of the flat surface 10a is formed by cutting As shown in FIG.

8 is an enlarged view of only a rocker-type switch in which a switch lock assembly according to an embodiment of the present invention is detached.

8, the switch 10 has a hollow 11 through which the first body 110 (see FIG. 3) and the second body 130 (see FIG. 3) The flat surface 10a described above is formed at the upper end of the base 10.

On the other hand, a coupling hole 10b may be formed on one side of the switch 10. The fastening hole 10b corresponds to a hole through which the fastening protrusion 115 (see FIG. 4) of the first body is inserted and fastened.

FIG. 9 is an enlarged view of only a first body of a switch lock assembly of a circuit breaker for protecting a motor according to an embodiment of the present invention.

9, a fastening protrusion 115 is provided on the inner side of the first side plate 111. The fastening protrusion 115 is inserted through the fastening hole 10b (see FIG. 8) 1 to prevent the flow of the body 110.

5, when the second body 130 is brought into close contact with the first body 110 to the maximum extent (that is, when the second body 130 is not drawn out), the switch 10 The flow of the first body 110 does not occur.

6, when the second body 130 is drawn out from the first body 110 to the other side of the switch 10, the first body 110 is connected to the switch 10 The flow of the first body 110 can be generated because there is no coupling structure in the first body 110. [

According to the embodiment of the present invention, even in this case, the generation of the flow of the first body 110 can be completely prevented by the coupling between the fastening protrusion 115 and the fastening hole 10b (see FIG. 8).

The present invention is not limited to the embodiments and the number of the fastening protrusions 115 and the fastening holes 10b (see Fig. 8) shown, but can be used in different forms and in various numbers.

9, an annular protrusion 114 is provided on the outer circumferential surface of the first insertion tube 113. As shown in FIG. Although not shown separately, the inner circumferential surface of the second insertion tube 133 (see FIG. 4) may be provided with a receiving groove (not shown) for receiving the annular protrusion 114.

The annular protrusion 114 is formed in a state in which the first body 110 and the second body 130 (see FIG. 4) are in maximum contact with each other, that is, 4), which are provided on the inner circumferential surface. Accordingly, when the first body 110 and the second body 130 (see FIG. 4) are brought into close contact with each other as much as possible, they can be kept separated from each other without exerting a force.

In addition, when the user pulls out the second body 130 (see FIG. 4) from the first body 110 to lock the off state of the switch, the annular projection 114 of the first body 110, The second body 130 (see FIG. 4) is detached in an interference fit state to fix the pulled state of the second body 130 (see FIG. 4). Thereby, the locked state of the switch can be fixed.

The first insertion tube 113 may be coupled to surround the outer surface of the second insertion tube 133, although not shown as another embodiment. In this case, the annular protrusion 114 is provided on the outer circumferential surface of the second insertion tube 133, and the receiving groove may be provided on the inner circumferential surface of the first insertion tube 113, . In addition, when the second body 130 (see FIG. 4) is pulled out from the first body 110 and the lock function for preventing the pushing operation of the switch in the on direction is exerted, So that the double locking function can be performed.

10 is a view showing a switch lock assembly of a circuit breaker for motor protection according to another embodiment of the present invention.

Referring to FIG. 10, unlike the above-described embodiment, the second side plate 131 may further include an extension grip 131a protruding upwardly from the upper side of the second side plate 131 as a means for more easily pulling the second body 130 . The extension grip 131a is a portion that can be easily grasped by the user, and is not limited to the illustrated shape and may have various shapes.

11 is a view showing a switch lock assembly of a circuit breaker for motor protection according to another embodiment of the present invention.

Referring to FIG. 11, the connecting portion between the first and second bodies 110 and 130 is not a pipe but a quadrangular prism, but the present invention is not limited thereto and may have various shapes.

As described above, according to the configuration and the operation of the present invention, the lock assembly for locking and unlocking the locker type switch can be retained by itself, so that the locker type switch can be easily and easily (On) state can be prevented.

Furthermore, when a separate lock device, which has been used in combination with a lock assembly provided in a rocker type switch, is used together, the locked state can be doubly maintained and the locking function can be enhanced.

Although the switch lock assembly of the motor protection circuit breaker has been described so far, it is apparent that various modifications can be made within the scope of the present invention.

It is to be understood that the above-described embodiments are illustrative in all aspects and should not be construed as limiting, and the scope of the present invention will be indicated by the claims for utility model registration described below rather than the detailed description, And all equivalents and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

1: Circuit breaker for motor protection
3: Body
5: cover
10: Rocker type switch (or switch)
10a: Flat surface
10b: fastening hole
11: hollow
100: Switch lock assembly
110: first body
111: first side plate
113: first insertion tube
114: annular projection
115: fastening projection
120: hollow
130: Second body
131: second side plate
131a: Extension grip
133: second insertion tube
151: guide groove
153: protruding chin

Claims (9)

A switch lock assembly for a motor protection circuit breaker capable of locking a rocker type switch,
A first body disposed through the switch; And
And a second body connected to the first body through the switch at the opposite side of the first body and disconnected from the switch when the switch is locked to block the ON operation of the switch,
The first body includes a first side plate formed to face one side of the switch and a first insertion tube connected to an inner center of the first side plate and inserted through the switch,
The second body includes a second side plate facing the other side of the switch and a second insertion tube connected to an inner center of the second side plate and inserted through the switch,
The first side plate is provided with a fastening protrusion, and the fastening protrusion is fastened through a fastening hole formed on one side of the switch to prevent the first body from flowing
Switch lock assembly of motor protection circuit breaker.
delete delete A switch lock assembly for a motor protection circuit breaker capable of locking a rocker type switch,
A first body disposed through the switch; And
And a second body connected to the first body through the switch at the opposite side of the first body and disconnected from the switch when the switch is locked to block the ON operation of the switch,
The first body includes a first side plate formed to face one side of the switch and a first insertion tube connected to an inner center of the first side plate and inserted through the switch,
The second body includes a second side plate facing the other side of the switch and a second insertion tube connected to an inner center of the second side plate and inserted through the switch,
Wherein an annular projection is provided on an outer peripheral surface of the first insertion tube,
And an inner circumferential surface of the second insertion tube is provided with a receiving groove for receiving the annular projection,
When the first body and the second body are in maximum contact with each other, the annular projection is formed to be seated in the receiving groove
Switch lock assembly of motor protection circuit breaker.
A switch lock assembly for a motor protection circuit breaker capable of locking a rocker type switch,
A first body disposed through the switch; And
And a second body connected to the first body through the switch at the opposite side of the first body and disconnected from the switch when the switch is locked to block the ON operation of the switch,
The first body includes a first side plate formed to face one side of the switch and a first insertion tube connected to an inner center of the first side plate and inserted through the switch,
The second body includes a second side plate facing the other side of the switch and a second insertion tube connected to an inner center of the second side plate and inserted through the switch,
Wherein an annular projection is provided on an outer peripheral surface of the second insertion tube,
Wherein an inner circumferential surface of the first insertion tube is provided with a receiving groove for receiving the annular projection,
When the first body and the second body are in maximum contact with each other, the annular projection is formed to be seated in the receiving groove
Switch lock assembly of motor protection circuit breaker.
A switch lock assembly for a motor protection circuit breaker capable of locking a rocker type switch,
A first body disposed through the switch; And
And a second body connected to the first body through the switch at the opposite side of the first body and disconnected from the switch when the switch is locked to block the ON operation of the switch,
The first body includes a first side plate formed to face one side of the switch and a first insertion tube connected to an inner center of the first side plate and inserted through the switch,
The second body includes a second side plate facing the other side of the switch and a second insertion tube connected to an inner center of the second side plate and inserted through the switch,
The upper end of the switch is formed to have a flat surface for holding the second side plate
Switch lock assembly of motor protection circuit breaker.
A switch lock assembly for a motor protection circuit breaker capable of locking a rocker type switch,
A first body disposed through the switch; And
And a second body connected to the first body through the switch at the opposite side of the first body and disconnected from the switch when the switch is locked to block the ON operation of the switch,
The first body includes a first side plate formed to face one side of the switch and a first insertion tube connected to an inner center of the first side plate and inserted through the switch,
The second body includes a second side plate facing the other side of the switch and a second insertion tube connected to an inner center of the second side plate and inserted through the switch,
The second side plate may further include an upwardly extending extension grip
Switch lock assembly of motor protection circuit breaker.
8. The method according to any one of claims 1 to 7,
The cover of the motor protection circuit breaker is provided with a guide groove for guiding the pulling out of the second body
Switch lock assembly of motor protection circuit breaker.
9. The method of claim 8,
And a protrusion protruding from the upper surface of the cover to prevent the second body from being detached when the second body is drawn out is provided at a distal end of the guide groove
Switch lock assembly of motor protection circuit breaker.
KR2020150008654U 2015-12-30 2015-12-30 Locking assembly for switch of manual motor starters KR200489570Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020150008654U KR200489570Y1 (en) 2015-12-30 2015-12-30 Locking assembly for switch of manual motor starters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020150008654U KR200489570Y1 (en) 2015-12-30 2015-12-30 Locking assembly for switch of manual motor starters

Publications (2)

Publication Number Publication Date
KR20170002471U KR20170002471U (en) 2017-07-10
KR200489570Y1 true KR200489570Y1 (en) 2019-07-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2020150008654U KR200489570Y1 (en) 2015-12-30 2015-12-30 Locking assembly for switch of manual motor starters

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000011842A (en) * 1998-06-22 2000-01-14 Kawamura Electric Inc Circuit breaker handle lock device
JP2002222623A (en) * 2001-01-26 2002-08-09 Matsushita Electric Works Ltd Handle locking device of circuit breaker
JP2007066681A (en) * 2005-08-31 2007-03-15 Sunx Ltd Lock structure of pushbutton switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000011842A (en) * 1998-06-22 2000-01-14 Kawamura Electric Inc Circuit breaker handle lock device
JP2002222623A (en) * 2001-01-26 2002-08-09 Matsushita Electric Works Ltd Handle locking device of circuit breaker
JP2007066681A (en) * 2005-08-31 2007-03-15 Sunx Ltd Lock structure of pushbutton switch

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