KR20120015678A - Terminal cover mechanism for manual motor starter - Google Patents

Terminal cover mechanism for manual motor starter Download PDF

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Publication number
KR20120015678A
KR20120015678A KR1020100077987A KR20100077987A KR20120015678A KR 20120015678 A KR20120015678 A KR 20120015678A KR 1020100077987 A KR1020100077987 A KR 1020100077987A KR 20100077987 A KR20100077987 A KR 20100077987A KR 20120015678 A KR20120015678 A KR 20120015678A
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KR
South Korea
Prior art keywords
terminal cover
terminal
upper frame
circuit breaker
flow preventing
Prior art date
Application number
KR1020100077987A
Other languages
Korean (ko)
Other versions
KR101148282B1 (en
Inventor
조현근
Original Assignee
엘에스산전 주식회사
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Priority to KR1020100077987A priority Critical patent/KR101148282B1/en
Publication of KR20120015678A publication Critical patent/KR20120015678A/en
Application granted granted Critical
Publication of KR101148282B1 publication Critical patent/KR101148282B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/04—Cases; Covers
    • 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
    • H01H71/08—Terminals; Connections
    • 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
    • H01H73/02—Details
    • H01H73/20—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0264—Protective covers for terminals

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  • Breakers (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

An object of the present invention is to provide a terminal cover device of a circuit breaker for protecting a motor that is easy to connect an electric wire having a ring terminal, and according to the present invention, an upper frame covering an upper enclosure with an open upper enclosure and a lower enclosure. In the terminal cover device of the motor protection wiring breaker having a plurality of terminals connected to the power supply side and the load side for each phase (PHASE),
An insulating partition wall portion installed on the upper frame and standing on both sides of the plurality of terminals to insulate the terminals; And
And a terminal cover having a plurality of upper openings opened to access the terminal, the terminal cover being detachable from the upper frame to be detachably attached to the insulating partition wall. A cover device is disclosed.

Description

Terminal Cover Device for Motor Circuit Breaker {TERMINAL COVER MECHANISM FOR MANUAL MOTOR STARTER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor protective circuit breaker (also abbreviated to MMS), and more particularly, to a terminal cover device of a motor protective circuit breaker.

The motor protection wiring breaker (abbreviated as MMS) is not only a manual operation controller for motor operation and stop control but also detects an accident current such as over current or short circuit current between the power supply side and the motor and automatically It is a low voltage power device that can protect the motor from burnout by accident current by cutting off.

The circuit breaker for motor protection includes an operation handle for controlling the operation and stop of the motor, a movable contactor and a movable contactor which are movable to an off or trip position contacting the fixed contactor and the fixed contactor or separated from the fixed contactor. And a switching mechanism including a driving mechanism, and a trip mechanism for detecting an accidental current on a circuit and triggering the opening and closing mechanism to operate at the trip position. The circuit breaker for motor protection is generally configured to further include three terminals on the power supply and the load side, respectively, for a three-phase circuit generally connected to the power supply and the load (motor) side.

The present invention relates to a terminal cover device of such a circuit breaker for motor protection. Such a terminal cover device provides an effect of preventing dust and dust from entering the terminal portion and preventing an electric shock accident.

In the terminal cover device of the motor protection wiring breaker, the prior art has a structure in which a terminal cover portion is integrally provided on an upper frame or a so-called upper cover of the motor protection wiring breaker. .

However, since the terminal cover device of the circuit breaker for motor protection according to the related art having the upper frame integrated with the terminal cover part has a structure in which the upper frame covers the terminal, the power supply side or the load (motor) side electric wire having a ring type terminal part When connecting to the terminal, there was the inconvenience of disconnecting the entire upper frame and then connecting the wire with the ring terminal. In particular, the structure of the prior art in the domestic and Asian regions that use a wire having a ring-shaped terminal as a power and load-side connection line has a problem that gives a great inconvenience to the installer or the user to install a circuit breaker for motor protection.

Accordingly, the present invention solves the above problems with the prior art, and a first object of the present invention is to provide a terminal device of a circuit breaker for motor protection that is detachable from the upper frame.

A second object of the present invention is to provide a terminal device of a motor protection wire circuit breaker which can prevent flow in a detachable terminal device of a motor protection wire circuit breaker.

The first object of the present invention, the motor for protecting the motor having a plurality of terminals connected to each phase (PHASE) on the power supply side and the upper side (UPPER FRAME) to cover the lower enclosure and the upper open as an enclosure In the terminal cover device of the circuit breaker for motor protection,

An insulating partition wall portion installed on the upper frame and standing on both sides of the plurality of terminals to insulate the terminals; And

And a terminal cover having a plurality of upper openings opened to access the terminal and detachable from the insulating partition wall, the terminal cover being separate from the upper frame. It can be achieved by providing a terminal cover device of a circuit breaker.

The second object of the present invention is to prevent the flow of the terminal cover in the vertical direction, both sides of the terminal cover is provided with a flow preventing protrusion, the insulating partition wall is formed in the horizontal direction extending from the outer edge and the flow It can be achieved by providing a terminal cover device of a circuit breaker for protecting a motor according to the present invention, characterized in that it comprises a flow preventing groove provided to correspond to the prevention protrusion.

The second object of the present invention, to prevent the separation of the terminal cover, the upper frame is provided with a departure prevention groove, the terminal cover is provided corresponding to the separation prevention groove portion can be fitted into the separation prevention groove portion It can be achieved by providing a terminal cover device of a circuit breaker for motor protection according to the invention, characterized in that the departure prevention protrusion is provided.

The second object of the present invention, the terminal cover is provided with a first vertical left and right flow preventing vertical groove portion so that the left and right flow of the terminal cover, the insulating partition wall extending downward from the upper edge and the first left and right It is achieved by providing a terminal cover device of a circuit breaker for protecting a motor according to the present invention, which is provided corresponding to the flow preventing vertical groove and has a second left and right flow preventing vertical groove in which the first left and right flow preventing vertical groove is fitted. Can be.

The terminal cover device of the circuit protection circuit breaker for motor protection according to the present invention is provided with a terminal cover formed separately from the upper frame and detachable from an insulating partition wall part which is erected on both sides of the plurality of terminals to insulate the terminals and the insulating partition wall part. Since it is configured to include, even when connecting the wiring having a ring terminal can be obtained by the effect that can be easily connected or disconnected by removing the detachable separate terminal cover without having to remove the upper frame.

In addition, the terminal cover device of the circuit protection circuit breaker for motor protection according to the present invention, the anti-flow protrusions are provided at each side edge of the terminal cover, the insulating partition wall is formed extending in the horizontal direction from the outer edge and corresponding to the anti-flow protrusions. Since it is provided with a flow preventing groove portion, it is possible to obtain an effect that the vertical flow of the terminal cover can be prevented.

In addition, the terminal cover device of the motor protection wiring breaker according to the present invention, the upper frame is provided with a separation preventing groove portion, the terminal cover is provided to correspond to the separation preventing groove portion provided separation prevention stones that can be fitted into the separation prevention groove portion. Since the unit is provided, an effect that the separation of the terminal cover can be prevented can be obtained.

 In addition, the terminal cover device of the circuit breaker for motor protection according to the present invention, the terminal cover is provided with a first left and right flow preventing vertical groove portion, the insulating partition wall is formed extending downward from the upper edge and the first left and right flow preventing vertical groove portion It is provided corresponding to the first left and right flow preventing vertical groove portion is fitted with the second left and right flow preventing vertical groove portion, it is possible to obtain the effect that the left and right flow of the terminal cover can be prevented.

1 is an exploded state diagram of a motor protection wiring breaker and a terminal cover showing a detachable structure of the terminal cover device of the motor protection wiring breaker according to the present invention;
Figure 2 is a perspective view showing a detailed configuration of the terminal cover device of the motor protective wiring breaker according to the present invention is a partially enlarged perspective view showing the configuration of the flow preventing protrusion provided in the terminal cover and the flow preventing groove provided in the insulating partition wall,
Figure 3 is a perspective view showing a detailed configuration of the terminal cover device of the circuit breaker for motor protection according to the present invention, is provided corresponding to the separation prevention groove portion provided in the upper frame and the separation prevention groove portion provided in the terminal cover inserted into the separation prevention groove portion. Configuration of the separation prevention protrusion which can be formed, and a configuration of the second left and right flow preventing vertical groove provided in the terminal cover and the first left and right flow preventing vertical groove provided in the insulating partition wall. Is a perspective view showing a loupe,

The object of the present invention and the configuration and effect of the present invention to achieve the same will be more clearly understood by the following description of the preferred embodiment of the present invention with reference to the accompanying drawings.

First, an exploded state diagram of a motor protection wiring breaker and a terminal cover showing a detachable structure of the terminal cover device of the motor protection wiring breaker according to the present invention will be described with reference to FIG. 1.

As shown in FIG. 1, a motor protection wiring breaker 100 mounted with a terminal cover device of a motor protection wiring breaker according to an exemplary embodiment of the present invention includes a lower enclosure 1 and an upper frame UPPER frame 2. And the plurality of terminals 3.

The lower enclosure (1) and the upper frame (UPPER FRAME) (2) constitute the enclosure of the motor circuit breaker circuit breaker 100, the lower enclosure (1) is an artificial resin material having a box-type electrical insulation having an open top It is formed by casting.

The upper frame 2 is a member covering the lower enclosure and has a vertical cross-sectional view in which the letter “T” is inverted as shown in FIG. 1, and manually turns the motor circuit breaker 100 for motor protection on or off. The handle 4 is mounted as an operation means which can be performed. Terminals are provided at both ends of the upper frame 2 in the longitudinal direction (upper and lower end in FIG. 1), respectively, and terminals 3 to be electrically connected to the power supply side and the load (motor) side, respectively, are provided in the three-phase phase terminals, for example. As three are provided.

As for the motor protection wiring breaker, the terminal cover device of the motor protection wiring breaker according to the preferred embodiment of the present invention includes an insulating partition wall portion 6 and a terminal cover 5.

The insulating partition 6 may be separately installed on the upper frame 2 to be integrally cast with the upper frame 2. The insulating partition wall part 6 is provided as a means which stands on both sides of the terminal 3 with respect to each of the some terminal 3, and insulates the terminals 3 from each other. The insulating partition 6 may be configured as a thin plate-shaped artificial resin plate having electrical insulation.

One terminal cover 5 is provided for each of the power supply terminal 3 and the load terminal 3, and each terminal cover (to access the terminal 3 to tighten or loosen the wire fixing screw) 5) has a plurality of open top openings. Here, in the case of the three-phase motor protection wiring circuit breaker 100, the upper opening per one terminal cover 5 is composed of three. In addition, the terminal cover 5 is detachable from the insulating partition wall portion 6 and is formed separately from the upper frame 2.

On the other hand with reference to Figures 2 and 3 will be described in detail the configuration of the terminal cover device of the circuit breaker for protecting the motor according to the preferred embodiment of the present invention.

As shown in FIG. 2, the flow preventing protrusions 5a are provided at both edges of the terminal cover 5 so as to prevent upward and downward flow of the terminal cover 5. As can be seen in FIG. 2 relative to the flow preventing protrusion 5a, the insulating partition wall part 6, in particular, the two outermost insulating partition wall parts of the four insulating partition parts 6 in the illustrated embodiment ( 6) has a flow preventing groove portion 6a extending in the horizontal direction from the outer edge and provided corresponding to the flow preventing protrusion 5a.

As shown in FIG. 3, in order to prevent separation of the terminal cover 5, a separation preventing groove part 2a is provided on the front surface of the upper frame 2 between the two insulating partition wall parts 6. The terminal cover 5 is provided with a release preventing protrusion 5b which is provided on a side facing the release preventing groove 2a to correspond to the release preventing groove 2a and can be fitted into the release preventing groove 2a. Here, the anti-separation protrusion (5b) is configured in accordance with a preferred embodiment as an inclined protrusion that the protrusion height is lowered from the top to the bottom. When the terminal cover 5 is detached according to the configuration of the inclined protrusion, a screwdriver is inserted into the gap between the front surface of the terminal cover 5 and the front surface of the upper frame 2, and the terminal cover 5 is pushed forward. ) Can be easily separated from the upper frame (2).

3, the terminal cover 5 is provided with a first vertical flow preventing vertical groove 5c so that the left and right flow of the terminal cover 5 is prevented. The insulating partition wall part 6 extends downward from the upper edge and is formed to correspond to the first left and right flow preventing vertical groove portion 5c, and the second left and right flow preventing vertical groove portion 5c to which the first left and right flow preventing vertical groove portion 5c is fitted ( 6b).

The assembling process of the terminal cover device of the circuit breaker for motor protection according to the preferred embodiment of the present invention configured as described above will be described.

First, a motor protection wiring breaker having four insulating partitions 6 integrally formed in the upper frame 2 is prepared.

Next, as long as it is provided on both side edges of the terminal cover 5, the flow preventing protrusions 5a formed in the two outermost insulating partitions 6 of the four insulating partitions 6 extending in the horizontal direction from the outer edges. Fit each pair of anti-flow protrusions (5a).

Next, the upper surface of the inner two insulating partitions 6 of the four insulating partitions 6 is fitted to the first left and right flow preventing vertical grooves 5c of the terminal cover 5, and then the terminal cover 5 is fitted. The front side of the bar is inserted into the second left and right flow preventing vertical groove portion 6b extending downward in the insulating partition 6, and the first left and right flow preventing vertical groove portion 5c is fitted and at the same time prevents the separation of the terminal cover 5. The protrusions 5b are pushed until they fit into the escape preventing grooves 2a of the upper frame 2. When the assembling process is performed for each of the terminal parts of the power supply side and the load side as shown in FIG. 1, the assembling process of the terminal cover device of the circuit breaker for motor protection according to the preferred embodiment of the present invention is completed.

On the other hand, in the terminal cover device of the circuit breaker for motor protection according to the preferred embodiment of the present invention configured as described above, an operation of connecting a wire having a ring terminal to the terminal while the terminal cover is installed will be described.

First, the terminal cover 5 is separated from the upper frame 2 by inserting a flat head screwdriver into a gap between the front surface of the terminal cover 5 and the front surface of the upper frame 2 and pushing forward.

Next, loosen the terminal screw, put the ring terminal of the wire having a ring terminal (not shown) on the terminal 3 to the terminal 3, and then tighten the terminal screw again to complete the connection between the wire and the terminal 3 do.

Next, the flow preventing protrusions 5a of the insulation partition wall portion 6 are fitted to the flow preventing protrusions 5a of the terminal cover 5, respectively, and the first left and right flow preventing vertical groove portions 5c of the terminal cover 5 are fitted. 2) the second left and right flow preventing vertical grooves 6b extending downward from the insulating partition wall 6 by fitting the upper surfaces of the inner two insulating partitions 6 to each other and then pushing the front surface of the terminal cover 5. The reassembly of the terminal cover is completed when the first left / right flow preventing vertical groove portion 5c is fitted in the same position and the release preventing protrusion 5b of the terminal cover 5 is fitted into the release preventing groove portion 2a of the upper frame 2. do..

The terminal cover device of the circuit breaker for motor protection according to the preferred embodiment of the present invention configured as described above can minimize dust and dust from entering the terminal portion and protect the user from electric shock due to exposure of the terminal portion. Can provide an effect.

1: lower enclosure 2: upper frame
2a: Detachment groove 3: Terminal
4: Handle 5: Terminal Cover
5a: flow preventing protrusion 5b: release preventing protrusion
5c: first vertical flow prevention vertical groove
6: insulation partition 6a: flow preventing groove
6b: second vertical flow prevention vertical groove 100: motor circuit breaker

Claims (5)

A motor protection wiring circuit breaker for a motor protection wiring circuit breaker having an upper frame (UPPER FRAME) covering the upper and lower enclosures having an upper opening as an enclosure, and having a plurality of terminals connected to each phase (PHASE) on the power supply side and the load side, respectively. In the terminal cover device of
An insulating partition wall portion installed on the upper frame and standing on both sides of the plurality of terminals to insulate the terminals; And
And a terminal cover having a plurality of upper openings opened to access the terminal, the terminal cover being detachable from the upper frame to be detachably attached to the insulating partition wall. Cover device. The method of claim 1,
Flow preventing protrusions are provided at both edges of the terminal cover, respectively, so that the vertical flow of the terminal cover is prevented, and the insulating partition wall extends horizontally from the outer edge and is provided to correspond to the flow preventing protrusion. A terminal cover device for a circuit breaker for motor protection, comprising a groove portion. The method of claim 1,
In order to prevent the terminal cover from being separated, the upper frame is provided with an anti-separation groove, and the terminal cover is provided with an anti-separation protrusion which is provided corresponding to the anti-separation groove and can be fitted into the anti-separation groove. Terminal cover device of the circuit breaker for motor protection. The method of claim 3,
The terminal cover device of the circuit protection circuit breaker for motor protection, characterized in that the separation prevention protrusion of the terminal cover is composed of an inclined protrusion that the height of the projection is lowered from the top to the bottom so that the terminal cover can be easily separated. The method of claim 1,
The terminal cover has a first left and right flow preventing vertical grooves so that the left and right flow of the terminal cover is prevented, and the insulating partition wall extends downward from the upper edge and is provided to correspond to the first left and right flow preventing vertical grooves. And a second left and right flow preventing vertical groove portion into which the first left and right flow preventing vertical groove portion is inserted.
KR1020100077987A 2010-08-12 2010-08-12 Terminal cover mechanism for manual motor starter KR101148282B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100077987A KR101148282B1 (en) 2010-08-12 2010-08-12 Terminal cover mechanism for manual motor starter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100077987A KR101148282B1 (en) 2010-08-12 2010-08-12 Terminal cover mechanism for manual motor starter

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KR20120015678A true KR20120015678A (en) 2012-02-22
KR101148282B1 KR101148282B1 (en) 2012-05-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180001418U (en) * 2016-11-03 2018-05-11 엘에스산전 주식회사 Button Padlock Device of Air Circuit Breaker
KR102263922B1 (en) * 2020-11-26 2021-06-11 (주) 에치케이씨 Rotation angle precise control actuator
KR102681439B1 (en) * 2024-02-08 2024-07-04 상도일렉트릭 주식회사 Circuit breaker safety cover

Families Citing this family (2)

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KR200476673Y1 (en) 2013-11-19 2015-03-19 주식회사 대륙 Auxiliary unit safety cover for magnetic contactor
KR102358058B1 (en) 2020-05-12 2022-02-04 우리산전 주식회사 Terminal cover for circuit breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200422657Y1 (en) 2006-04-17 2006-07-31 한국 전기안전공사 A circuit breaker possess protection covers
KR200431095Y1 (en) * 2006-09-05 2006-11-14 만 석 김 Braker cover with a terminal cover
JP2008140598A (en) * 2006-11-30 2008-06-19 Fuji Electric Fa Components & Systems Co Ltd Terminal cover of electromagnetic contactor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180001418U (en) * 2016-11-03 2018-05-11 엘에스산전 주식회사 Button Padlock Device of Air Circuit Breaker
KR200486691Y1 (en) * 2016-11-03 2018-07-20 엘에스산전 주식회사 Button Padlock Device of Air Circuit Breaker
KR102263922B1 (en) * 2020-11-26 2021-06-11 (주) 에치케이씨 Rotation angle precise control actuator
KR102681439B1 (en) * 2024-02-08 2024-07-04 상도일렉트릭 주식회사 Circuit breaker safety cover

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Publication number Publication date
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