KR20160123420A - Operating handle apparatus of circuit breaker - Google Patents

Abstract

The present invention provides an operation handle device of a circuit breaker for wiring. According to the present invention, the operation handle device of the circuit breaker for wiring connects an operation unit of a circuit breaker installed in a case to an external operation unit installed in a door configured to open or close the case through an axis to transfer rotation force from the external operation unit to the operation unit of the circuit breaker through the axis.

Description

[0001] OPERATING HANDLE APPARATUS OF CIRCUIT BREAKER [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an operation handle device for a circuit breaker, and more particularly, to an operation handle device for a wiring breaker that can ensure reliability when a circuit breaker is manually operated.

In general, a circuit breaker for a wiring breaker is an electrical device that automatically protects a load and a line by shutting off the circuit when an overload or short circuit of the circuit occurs.

Such a circuit breaker detects the current in the circuit breaker regardless of the artificial opening and closing of the circuit breaker when an abnormal current is generated and automatically cuts off the current, which is called a normal trip.

FIG. 1 is a perspective view showing a conventional handle device for a wiring breaker, and FIG. 2 is a cross-sectional view showing a conventional handle device for a wiring breaker.

The wiring breaker is installed inside the enclosure, and the enclosure is provided with a door 10 that is opened and closed to open and close the switchboard circuit breaker to the outside.

The wiring breaker is provided with an operating portion 1 for switching ON / OFF of the rotation force externally supplied to the rectilinear motion and performing a tripping operation.

One end of the shaft 3 is connected to the operating portion 1 so as to be connected thereto. Here, the shaft 3 has a predetermined length.

Further, the door 10 is provided with an external operation handle 2.

Therefore, when the door 10 is rotated to seal the housing, the external operating handle 2 is engaged with the other end of the shaft 3 described above.

With this configuration, when the external operation handle 2 is rotated while the door 10 is closed, the resulting rotational force can be transmitted to the operation unit 1 on the side of the wiring breaker via the shaft 3.

Therefore, in order to transmit the rotational force from the outside to the operation unit 1, the length of the shaft 3 must be accurate, and the other end of the shaft 3 and the external operation handle 2 are easily engaged with each other .

However, in a case where the operating portion 1, the shaft 3 and the external operating handle 2 of the above-described circuit breaker are applied to the respective enclosures having different thicknesses of doors, physical breakage or external operation of the operating portion 1 The operation of the handle 2 can be caused to malfunction.

The length of the shaft 3 is relatively long between the operating portion 1 and the external operating handle 2 when the thickness of the door 10 is thick.

Accordingly, the other end of the shaft 3 is coupled to the external operation handle 2 by forming an excessive coupling force, thereby increasing the load on the rotation operation of the external operation handle 2, so that normal operation is not performed .

Further, due to the above-described excessive coupling force, there arises a problem that parts in the operating portion 1 or the external operating handle 2 connected to the shaft 3 are broken.

Secondly, when the thickness of the door is less than a predetermined value, the length of the shaft 3 is relatively short between the operating portion and the external operating handle 1. [

Therefore, the shaft 3 connected to the operating portion 1 can not be coupled with the external operating handle 2 installed on the door due to a distance from the external operating handle 2, thereby failing to operate the operating portion 1 of the circuit breaker from the outside have.

A prior art related to the present invention is Korean Registered Patent Registration No. 20-0441992 (Sep. 22, 2008), which discloses a technique for locking an external handle of a circuit breaker for a wiring breaker.

An object of the present invention is to provide an operation handle device for a wiring breaker which can uniformly maintain a distance between an operation portion of a circuit breaker installed on a housing and an external operation portion provided on a door.

It is another object of the present invention to provide a circuit breaker which can facilitate the coupling between a shaft coupled to an operating portion of a circuit breaker and an external operating portion provided on the door to reduce damage to the component, The operation handle device of the present invention.

In one aspect, the present invention provides an operation handle device for a circuit breaker.

The operation handle device of the wiring breaker of the present invention is characterized in that an operation portion of a circuit breaker provided inside the enclosure and an external operation portion provided on a door for opening and closing the enclosure are connected through a shaft to transmit a rotational force from the external operation portion to the circuit breaker To the operation portion of the circuit breaker.

Here, the axis is elastically variable in length so as to correspond to the distance between the operating portion of the circuit breaker and the external operating portion which varies according to the opening and closing operation of the door.

Preferably, the shaft includes a first shaft coupled to an operating portion of the circuit breaker, and a second shaft connected to the first shaft so as to be able to slidingly move elastically and selectively coupled to the external operating portion.

In addition, a sliding groove may be formed at an end of the first shaft.

A pair of position variable holes exposed to the sliding groove may be formed on both sides of the first shaft.

The end of the second shaft may be slidably inserted into the sliding groove.

A pair of latching protrusions that are moved along the pair of position variable holes may be formed at both ends of the end portion of the second shaft.

A first elastic spring for elastically supporting an end of the second shaft may be provided in the sliding groove.

In the inner circumference of the sliding groove, positioning grooves at even intervals may be formed along the longitudinal direction of the first shaft.

Preferably, the end of the second shaft is elastically flowable along the vertical direction of the second shaft, and the positioning protrusion is sequentially formed in the positioning grooves as the second shaft is slidably moved.

In another aspect, the outer operating portion according to the present invention is inclined to a predetermined engagement position for transmitting rotational force to the shaft.

The handle may include a handle body mounted on the door, a handle mounted on one side of the handle body and providing a rotational force at the engagement position, and a handle mounted on the handle body, And a second resilient spring for resiliently supporting the inclined guide member. The present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the scope of the present invention.

Preferably, the handle body is provided with a cover ring.

Preferably, the inclined guide member is located inside the cover ring and elastically flows by the second elastic spring.

It is preferable that a guide groove for guiding the movement of the rim of the inclined guide member is formed on the inner periphery of the covering.

The rim of the inclined guide member may be curved.

The present invention has the effect that the distance between the operating portion of the circuit breaker installed on the housing and the external operating portion provided on the door can be uniformly maintained.

In addition, the present invention facilitates coupling between a shaft coupled to an operation portion of the circuit breaker and an external operation portion provided on the door, thereby reducing damage to the components and improving operation reliability as the circuit breaker is operated from the outside.

1 is a perspective view showing an operation handle device of a conventional circuit breaker.
2 is a cross-sectional view showing the operation handle device of a conventional wiring breaker.
3 is a perspective view showing an operation handle device of the circuit breaker of the present invention.
4 is an exploded perspective view showing an axis according to the present invention.
5A is a perspective view showing a first axis according to the present invention.
Figure 5b is a perspective view showing a second axis according to the invention.
6 is a cross-sectional view showing an axis according to the present invention.
7 is a cross-sectional view showing another example of an axis according to the present invention.
8 is a view showing another example of an axis according to the present invention.
FIG. 9 is an exploded perspective view showing an external operating portion according to the present invention. FIG.
10 is a perspective view showing the inclined guide member according to the present invention.
11 to 13 are cross-sectional views illustrating the process of coupling the shaft to the external operating portion according to the present invention.
14 is a sectional view showing an example in which the flow of the inclined guide member according to the present invention is guided.
15 is a view showing another example of the inclined guide member according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an operation handle device for a wiring breaker of the present invention will be described with reference to the accompanying drawings.

FIG. 5 is a perspective view showing a first axis according to the present invention, and FIG. 5 (b) is a perspective view showing an operation handle device of a wiring breaker according to the present invention, FIG. 4 is an exploded perspective view showing an axis according to the present invention, FIG. 6 is a cross-sectional view showing an axis according to the present invention. FIG.

3 and 4, the operation handle device of the circuit breaker of the present invention includes an operating portion 100 of a circuit breaker and an external operating portion 200 installed in a door (not shown) for opening and closing a case (not shown) And transmits the rotational force from the external operating unit 200 to the operating unit 100 of the breaker through the shaft 300. [

A breaker (not shown) is installed inside the enclosure, and the operation unit 100 of the breaker provides a physical force to convert the rotational force into a rectilinear motion so that the breaker can be turned on, off, or tripped.

Here, the operating portion 100 of the circuit breaker may be coupled to one end of the shaft 300 according to the present invention, as shown in FIG.

The shaft 300 is formed in a rectangular cross-sectional shape. Although not shown in the drawing, the operating portion 100 of the circuit breaker has a fitting groove into which the end of the shaft 300 is fitted.

Here, the fitting groove is also formed in a square groove shape, so that a coupling force can be formed so that the shaft 300 is not rotated in place.

On the other hand, the door is hinged to the housing and is rotatable, thereby opening and closing the interior of the housing.

When the door is closed to close the inside of the housing, the external operating unit 200 installed on the door is coupled to the other end of the shaft 300 and is capable of transmitting rotational force to the coupled shaft 300 .

The detailed configuration and operation of the external operation unit 200 will be described later.

The shaft 300 according to the present invention mainly comprises a first axis 310 and a second axis 320.

The first axis 310 has a first length L1 and the second axis 320 has a second length L2.

One end of the first shaft 310 is coupled to the operation unit 100 of the circuit breaker.

The other end of the second shaft 320 is selectively coupled to the external operation unit 200.

The other end of the first shaft 310 and one end of the second shaft 320 are connected such that the entire length of the shaft is elastically variable. Accordingly, the entire length of the shaft 300 can be elastically and variably regulated.

The connection structure of the first shaft 310 and the second shaft 320 will be described.

Referring to FIGS. 4, 5A, 5B and 6, a sliding groove 311 having a predetermined depth inward is formed at the other end of the first shaft 310.

A pair of position variable holes 312 having a predetermined length are formed on both sides of the other end of the first shaft 310 and the pair of position variable holes 312 are inserted into the sliding groove 311 .

The pair of position variable holes 312 are formed at positions facing each other.

A sliding shaft 321, which is inserted into the sliding groove 311 and is slidable, is formed at one end of the second shaft 320 along the longitudinal direction.

Here, the length of the sliding shaft 321 corresponds to a length that is elastically variable substantially along the length of the entire shaft 300.

And protruding latching protrusions 322 are fixed to both ends of one end of the second shaft 320.

The latching protrusion 322 is composed of a rivet 322a and a pin 322b which is engaged with the rivet 322a and is engaged with a pair of position variable holes 312 formed at the end of the first shaft 310 And can be moved along the position variable hole 312 in the state of FIG.

The locking protrusions 322 are fastened to each other through a fastening hole 320a formed in the sliding shaft 321 of the second shaft 320 and are disposed to pass through the pair of position variable holes 312, respectively.

That is, the latching protrusion 322 is slid along each position variable hole 312. The length of the position variable hole 312 can regulate the sliding movement range of the latching protrusion 322. [

A first elastic spring 330 is installed in the sliding groove 311 of the first shaft 310.

The first elastic spring 330 elastically supports the end of the sliding shaft 321 of the second shaft 320 inserted into the sliding groove 311.

Accordingly, the second shaft 320 can be elastically flown by the elastic force of the first elastic spring 330, and the elastic force of the first elastic spring 330, It is possible to return to the home position.

A pair of coupling protrusions 323 are formed on both sides of the second shaft 320 to be coupled to a handle body 210 of an external operation unit 200 described later.

The operation of the operation handle device of the circuit breaker of the present invention will be described with reference to the above configuration.

3 and 4, in a state in which the door is opened, the operation portion 100 of the circuit breaker installed in the housing and the external operation portion 200 installed in the door are separated from each other.

Here, the shaft 300 coupled to the operating portion 100 of the circuit breaker is waiting to protrude along the front of the case.

In this state, when the door is closed by rotating the door, the external operating unit 200 installed on the door can be engaged with the shaft 300.

In detail, according to the closing operation of the door, the other end of the second shaft 320 is coupled to the external operation unit 200, and receives an external force due to the coupling.

The second shaft 320 is pressed by an external force and the sliding shaft 321 formed at one end of the second shaft 320 is inserted into the sliding groove 311 of the first shaft 310, .

At this time, the latching protrusions 322 formed at the end of the sliding axis 321 are slid along the position variable holes 312 formed at the other end of the first axis 310.

In addition, the first elastic spring 330 can be compressed by inserting the sliding shaft 321 of the second shaft 320 into the sliding groove 311.

Therefore, the shaft 300 according to the present invention can be slidably moved with respect to the first shaft 310 by the second shaft 320, and thus the overall length of the shaft 300 can be changed, The distance between the external operation unit 200 and the external operation unit 200 is changed.

The length of the shaft 300 is relatively long between the operation unit 100 and the external operation unit 200. The length of the shaft 300 and the external operation unit 200 It is possible to reduce the load due to the rotation operation of the external operation unit 200 and to perform the normal rotation operation.

Also, it is possible to prevent the excessive coupling force from being formed as described above, thereby preventing the components of the operation unit 100 or the external operation unit 200 connected to the shaft 300 from being damaged.

The total length of the shaft 300 according to the present invention is greater than or equal to the length of the operation unit 100 of the circuit breaker and the external operation unit 200 so that the operation unit 100 So that the shaft 300 coupled to the outer operating portion 200 can be normally coupled.

In addition, the second length L2 of the second axis 320 according to the present invention may be shorter than the first length L1 of the first axis 310. [

The second shaft 320 is formed as a free end and is physically coupled to an external operating unit 200 installed on the door when the door is closed.

Since the sliding shaft 321 of the second shaft 320 is inserted into the sliding groove 311 of the first shaft 310 and is slidably moved, the shaft on the sliding side (the second shaft 320) Should be formed shorter than the length of the first shaft 310, the shaft deformation during the flow can be small.

7 is a cross-sectional view showing another example of an axis according to the present invention.

7, a plurality of positioning grooves 311a are formed in the inner circumference of the sliding groove 311 formed in the first shaft 310 along the longitudinal direction of the first shaft 310 at equal intervals .

The positioning groove 311a may be formed as a semicircular groove so that a positioning projection 343 having a spherical shape to be described later can be fitted.

A pair of positioning members 340 are formed on both sides of the sliding shaft 321 of the second shaft 320.

The positioning member 340 is resiliently moved along the vertical direction of the sliding shaft 321.

Each of the positioning members 340 is constituted by an installation groove 341, a spring 342 and a hemispherical positioning projection 343.

The installation groove 341 is formed to have a certain depth from both sides of the sliding shaft 321.

The hemispherical positioning protrusion 343 is located in the mounting groove 341.

The spring 342 is installed in the mounting groove 341 to elastically support the positioning protrusion 343.

Therefore, when the external force is applied, the positioning protrusion 343 is inserted into the mounting groove 341. When the external force is removed, the positioning protrusion 343 protrudes outward of the mounting groove 341 due to the elasticity of the spring 342. [

When the sliding shaft 321 is inserted into the sliding groove 311 formed in the first shaft 310, the positioning shaft 343 is inclined at a certain angle along the other end from one end of the sliding shaft 321 So that it can be easily inserted into the installation groove 311a.

The length of the elastically variable shaft 300 is kept constant after the door is closed and the shaft 310 and the external operating part 200 installed on the operating part 100 of the circuit breaker are coupled to each other .

That is, the sliding shaft 321 of the second shaft 320 is inserted into the sliding groove 311 of the first shaft 310, and the positioning protrusions 343 at the inserted position protrude from the mounting groove 341 And is inserted and positioned in each of the positioning grooves 311a at the corresponding position.

8 is a view showing another example of an axis according to the present invention.

Referring to FIG. 8, the sliding shaft 321 'of the second shaft 320 according to the present invention is formed in a circular bar shape, and the sliding groove 311' of the first shaft 310 is connected to the sliding shaft 321 ' May be formed to have a cylindrical shape.

Accordingly, when the sliding shaft 321 'slides in the state of being inserted into the sliding groove 311', when the entire length of the shaft 300 is varied by minimizing the frictional force generated, an excessive force is applied to the shaft 300 itself It can be prevented from being damaged and damaged.

Next, an external operating portion coupled to the other end of the second shaft will be described.

FIG. 9 is an exploded perspective view showing an outer operating part according to the present invention, FIG. 10 is a perspective view showing a tilting guide member according to the present invention, and FIGS. 11 to 13 show a process of coupling an axis to an outer operating part according to the present invention Sectional views.

9 and 10, the external operation unit 200 includes a handle body 210, a handle 220, an inclined guide member 230, a second elastic spring 240, and a cover ring 250, .

The handle body 210 is installed on the door so as to be positioned at a position corresponding to the operation unit 100 of the circuit breaker.

The handle 220 is rotatably mounted on one side of the handle body 210 and includes a coupling member 221 penetrating the center of the handle body 210 and coupled to the other end of the second shaft 320, .

Here, a position where the coupling member 221 and the other end of the second shaft 320 are coupled is referred to as a coupling position.

The inclined guide member 230 is installed on the other side of the handle body 210.

The inclined guide member 230 has a ring-shaped rim 231 and a center hole 232a penetrating through the rim 231. The inclined guide member 230 has an inclined surface 232b having an inclined surface 232b inclined from the inner periphery of the rim 231 And a body 232.

The coupling position can be exposed to the outside by the center hole 232a.

The cover ring 250 is installed at the other surface of the handle body 210 and covers the outer side surface of the tilt guide member 230 and the rim 231.

The second elastic spring 240 elastically supports the other surface portion of the handle body 210 and the bottom surface of the rim 231 of the inclined guide member 230.

Accordingly, the second elastic spring 240 allows elastic flow when the inclined guide member 230 is covered with the cover ring 250.

The operation of the external operation unit 200 will be described with reference to the above configuration.

11 to 13, when the door is closed, the shaft 300 coupled to the operating portion 100 of the circuit breaker approaches the external operating portion 200, And is coupled with the member 221.

At this time, the shaft 300 can be turned downward due to the load of the shaft 300 itself, so that the second shaft 320 can be dislocated at the joining position of the external operation unit 100. [

In this state, when the other end of the second shaft 320 gradually contacts the sloped surface 232b of the sloped guide member 230, the other end of the second shaft 320 is brought into contact with the sloped surface 232b of the sloped body 232 To the center hole 232a formed at the center of the inclined body 232 along the guide groove 232b.

At the same time, the inclined guide member 230 elastically flows by the second elastic spring 240, thereby absorbing the impact due to the contact or collision with the second shaft 320, and the inclination of the inclined body 232 So that the other end of the second shaft 320 can be easily moved to the center hole 232a.

Accordingly, the other end of the second shaft 320, which is obliquely guided by the inclined surface 232b of the inclined body 232, is easily guided to the engagement position, and the engagement member 221 of the handle 220 positioned at the engagement position Can be combined.

14 is a sectional view showing an example in which the flow of the inclined guide member according to the present invention is guided.

Referring to FIG. 14, a guide groove 251 for guiding movement of the rim 231 of the inclined guide member 230 may be formed on the inner circumference of the covering 250 'according to the present invention.

With this configuration, when the other end of the second shaft 320 contacts the tilting guide member 230, the tilting guide member 230 is elastically flowed while being pressed, and the rim 231 of the tilting guide member 230 The guiding groove 251 formed on the inner periphery of the covering 250 'guides the movement of the inclined guiding member 230 while being guided by the guide groove 251, thereby preventing the guiding member 230 from being excessively twisted inside the covering 250'.

15 is a view showing another example of the inclined guide member according to the present invention.

Referring to FIG. 15, the rim 231 of the inclined guide member 230 may be curvature R treated.

With this configuration, when the other end of the second shaft 320 is in contact with the inclined guide member 230 so that the inclined guide member 230 is elastically flowed while being pressed, the edge 231 of the inclined guide member 230 And the inner circumference of the cover ring 250 can be minimized and the edge 231 of the inclined guide member 230 is deformed.

As described with reference to Figs. 14 and 15, since the problem of turning the inclined guide member 230 within the coverings 250 and 250 'is solved, by maintaining the state of being distorted inside the coverings 250 and 250' 200 can be prevented from being damaged.

As described above, a specific embodiment of the operation handle device of the circuit breaker of the present invention has been described. However, it is obvious that various modifications are possible within the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

It is to be understood that the foregoing embodiments are illustrative and not restrictive in all respects and that the scope of the present invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100:
200:
210: handle body
220: Handle
230: inclined guide body
240: second elastic spring
300: Axis
310: 1st axis
311: Sliding groove
312: Positional variable hole
313: Positioning groove
320: 2nd axis
321: Sliding shaft
322:
330: first elastic spring

Claims (11)

An operating portion of a breaker installed inside the enclosure;
An external operating unit installed on a door that opens and closes the housing;
And a shaft for transmitting a rotational force from the external operating portion to an operating portion of the breaker,
Wherein the shaft is elastically variable in length so as to correspond to a distance between the operating portion of the breaker and the external operating portion that varies according to opening and closing operations of the door.
The method according to claim 1,
The axis,
A first shaft coupled to an operating portion of the circuit breaker,
And a second shaft connected to the first shaft so as to be slidable resiliently and selectively engaged with the external operating portion.
3. The method of claim 2,
A sliding groove is formed at an end of the first shaft,
A pair of position variable holes exposed in the sliding groove are formed on both sides of the first shaft,
A sliding shaft is formed at an end of the second shaft so as to be slidably inserted into the sliding groove,
A pair of latching protrusions which are moved along the pair of position variable holes are formed at both end portions of the end portion of the second shaft,
And a first elastic spring for elastically supporting an end of the second shaft is provided in the sliding groove.
The method of claim 3,
On the inner circumference of the sliding groove,
Wherein the positioning grooves are formed at regular intervals along the longitudinal direction of the first shaft,
And a positioning protrusion that is elastically flowable along a vertical direction of the second shaft and is sequentially engaged with the positioning grooves as the second shaft is slidably moved is formed at an end of the second shaft. .
3. The method of claim 2,
Wherein,
And an end of the second shaft is tilted and engaged with the second shaft.
3. The method of claim 2,
The first axis forming a first length and the second axis forming a second length,
And the second length is shorter than the first length.
An operating portion of a breaker installed inside the enclosure;
An external operating unit installed on a door that opens and closes the housing;
And a shaft for transmitting a rotational force from the external operating portion to an operating portion of the breaker,
Wherein,
And wherein the operating handle unit is inclined to a predetermined engagement position for transmitting a rotational force to the shaft.
8. The method of claim 7,
Wherein,
A handle body mounted on the door,
A handle provided at one side of the handle body and providing a rotational force at the engagement position,
An inclined guide member installed at the other surface of the handle body and guiding the end of the shaft to the engagement position so that the end of the shaft and the handle are engaged;
And a second resilient spring for resiliently supporting the inclined guide member.
9. The method of claim 8,
The handle body is provided with a cover ring,
The inclined guide member is located inside the cover ring and elastically flows by the second elastic spring,
In the inner periphery of the covering,
Wherein a guide groove for guiding the movement of the rim of the inclined guide member is formed.
10. The method of claim 9,
Wherein an edge of the inclined guide member is subjected to curvature processing.
8. The method of claim 7,
Wherein the shaft is elastically variable in length by an external force generated when the shaft is engaged with the external operating portion at the engagement position.

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