KR101676736B1

KR101676736B1 - switch handle device for contact breaker

Info

Publication number: KR101676736B1
Application number: KR1020150040243A
Authority: KR
Inventors: 윤여관
Original assignee: 윤여관
Priority date: 2015-03-23
Filing date: 2015-03-23
Publication date: 2016-11-17
Also published as: KR20160113908A

Abstract

The present invention enables detachment and coupling with the on / off switch device even in a state where the key knob is located on the off display portion, and furthermore, it is possible to prevent deterioration of the over- So that the anti-rotation setting can be made for the rotation in the ON mode direction.

Description

A switch handle for a breaker

The present invention relates to a switch handle for a circuit breaker, and more particularly, to a switch handle for a circuit breaker which enables separation and coupling with an on-off switching device even when the key knob is located on the off- The anti-rotation setting for the over-rotation in the mode direction and the anti-rotation setting for the rotation in the on-mode direction can be performed.

In general, the switch handle for a circuit breaker is detachably coupled to an on-off switching device coupled to the circuit breaker to provide a function to rotate the on-off button of the circuit breaker of the linear-rotating type in a rotary manner.

1 to 5B, a switch handle for a circuit breaker (hereinafter, referred to as a switch handle) 10 is described as an example of a switch handle for a circuit breaker used in the above- A handle body 14 detachably coupled to one surface of the handle body 14 and formed with an entrance hole 17, a key knob 12, a handle body 14 rotatably coupled to the key knob 12, Plate (16).

Specifically, a circular protrusion 20 protruding from the key knob 12 is formed on the surface of the key knob 12 corresponding to the handle 18, and the protrusion 20 has a through-hole 22 And the rotary plate 24 are fixedly coupled to each other.

At this time, the through hole 22 of the rotary plate 24 is arranged to coincide with the insertion groove 26 formed in the rotation protrusion 20. That is, the through hole 22 is formed in the same plane shape as that of the knob projection 104, which will be described later, from the front, and the insertion groove 26 is formed so as to include all the shape and area of the through hole 22.

The handle body 14 is provided therein with a rotation plate 24 which is fixed in a state of being placed on the rotation protrusion 20 and interlocked with the rotation protrusion 20 as described above, And a resilient member 48 for resiliently supporting the rotation plate 46. The rotation plate 46 is rotatably supported by the rotation plate 46. [

The knob projection 104 of the connecting rod 102 connected to the on-off switching device 100 may be inserted into the insertion groove 26 of the key knob 12 at the center of the rotary plate 24 A through hole 22 is formed.

A fixing protrusion 50 protrudes outwardly from the outer circumferential side of the rotary plate 24 at one side.

A stopper protrusion 54 is formed on the bottom surface of the handle body 14 so that the shoulder 52 formed on one side of the fixing protrusion 50 when the rotating plate 24 rotates is brought into close contact with the bottom surface of the handle body 14, . When the key knob 12 is positioned in the on display unit 40, the stopper protrusion 54 is in contact with the stopper protrusion 54 so that the protrusion 52 of the fixing protrusion 50 interlocking with the stopper protrusion 54 is in close contact with the stopper protrusion 54 Place it on the spot.

A rotating plate 46 having a predetermined length is disposed at one side of the handle body 14 so as to pass through the rotating plate 24 from one side toward the other side. One end of the pivoting plate 46 is coupled to a hinge shaft 56 formed at a predetermined position on the bottom of the handle body 14 and has a structure capable of pivoting with a radius.

An elastic member 48, which is a torsion spring, is coupled to the hinge shaft 56. The one end supporting portion 58 of the elastic member 48 is elastically supported by the one end of the rotation plate 46 and the other end supporting portion 60 is elastically supported on one side inner wall of the handle body 14. [ With this structure, the rotating plate (46) is always provided with a lancing force across the through hole (22) of the rotating plate (24) and passing from one side to the other side.

A key knob 12 is formed on one end of the rotation plate 46 so as to partially cover the through hole 22 of the rotation plate 24 by the ON display unit 40.

A guide protrusion (62) protrudes from the bottom surface of the pivot plate (46) spaced apart from the hinge shaft (56) by a predetermined distance. The guide protrusion 62 is moved along the outer circumference of the rotary plate 24 while rotating the rotary plate 24 in a state where the guide protrusion 62 is in contact with the outer circumference of the rotary plate 24.

The on-off switching device 100 coupled to the circuit breaker 108 includes a support housing (not shown) coupled to the circuit breaker 108 so as to operate the on-off button 110 of the circuit breaker 108 in an on- A connection rod 102 rotatably coupled to the support housing 106 so as to have a length and adapted to turn on and off the on-off button 110 of the breaker 108 according to the rotation direction, And a knob protrusion 104 provided at one end of the key top 102 and coupled to the insertion groove 26 of the key knob 12. [

The operation of the switch handle 10 configured as above will be described. First, as shown in FIGS. 1 and 2B, the knob protrusion 104 provided on the connecting rod 102 of the on- The handle 10 is coupled to each other.

For such a coupling, the key knob 12 is further turned over in the off-mode direction in the off-mode direction so that the states of FIGS. 5A and 5B can be taken in the states of FIGS. 3A and 3B. At this time, the rotary plate 24 interlocked with the key knob 12 also over-rotates.

The guide protrusion 62 of the rotation plate 46 which moves along the outer circumference of the rotation plate 24 while the rotation plate 24 is overturned moves along the outer circumference of the fixing protrusion 50 of the rotation plate 24 So that the pivot plate 46 is completely out of the through hole 22 (see Figs. 3B and 5B).

The knob projection 104 is inserted into the insertion groove 26 of the key knob 12 through the through hole 22 of the rotary plate 24 in the above state.

When the key knob 12 is rotated so as to be positioned on the on-display unit 40 or the off-display unit 42 in such a state that the key knob 12 is engaged, the rotation plate 24, The plate 46 again covers one side portion of the through-hole 22.

That is, as shown in FIGS. 3A, 3B, 4A and 4B, the pivot plate 46 partially covers the through hole 22. The rotation plate 46 partially covering the through hole 22 is located rearwardly of the knob projection 104. As a result, the key knob 12 is placed on the ON display portion 40 and the OFF display portion 42 The knob projection 104 can not be separated from the insertion groove 26 of the key knob 12. [

5A and 5B, only when the key knob 12 completely rotates from the off-display unit 42, the pivot plate 46 is moved to completely open the through hole 22 of the rotary plate 24 The switch handle 10 and the on-off switching device 100 are separated from each other only in this state.

The switch handle 10 configured as described above is not in a state of intentional over-rotation of the key knob 12 for separating the knob protrusion 104 from the operator, but the state in which the key knob 12 is positioned on the on- The switch handle 10 and the knob protrusion 42 can be easily pivoted in a state in which the key knob 104 passes the off display portion 42 during the quick mode switching operation from the switch handle 10 to the off display portion 42, 104). &Lt; / RTI >

When the switch handle 10 is separated from the knob protrusion 104 during the off mode switching operation instead of the intentional separation as described above, there arises a problem of re-coupling with the knob protrusion 104, So that it is difficult for the operator to perform the switching operation in an urgent situation.

When the switch handle 10 is separated from the knob protrusion 104 in the process of switching off the mode, the user is inadvertently switched to the off mode due to the operator's re-combination process with the knob protrusion 104 The knob protrusion 104 is rotated to the ON mode, thereby causing the electric shock and electric power accident of the operator due to sudden power supply.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to enable separation and combination with an on-off switching device even when a key knob is located on an off- An object of the present invention is to provide a switch handle for a circuit breaker capable of preventing an anti-rotation setting for turning in the on-mode direction together with an anti-rotation setting for over-turning in the mode direction.

According to an aspect of the present invention, there is provided a key knob comprising: a key knob having a rotation protrusion having an insertion groove formed on one surface thereof, the rotation protrusion being rotatably coupled to a handle body; A rotary plate fixed to a rotation protrusion of the key knob and having a through hole at a position corresponding to the insertion groove; The movable knob is slidably disposed on the rotary plate in a state of being elastically supported in the ON and OFF mode directions, and the movable plate is moved in a direction in which the elastic plate is supported in a resiliently supporting direction, A slide plate on which a coupling hole is formed and arranged so as to partially cover the aperture; A guide protrusion protruding from the rotary plate at a position spaced apart from the through hole; A guide groove formed in the slide plate for engaging the guide protrusion and allowing the guide plate to be moved in a direction in which the slide plate is elastically supported according to a position at which the guide protrusion has a radius and is rotated in the on and off directions; The guide groove is formed in the slide plate so as to be movable in a direction in which the slide plate is elastically supported at the inflection point of the guide groove and a curved surface groove portion formed with a radius of curvature equal to the radius of rotation of the guide projection. A first boss provided on the inside of the handle body and including a straight groove portion; a first boss pivotably connected to the first boss, the slide plate being moved in the on mode direction, The first setting means includes a first blocking portion disposed horizontally to push the slide plate in the off mode direction and a second blocking portion connected to one side of the first blocking portion in a vertical direction, And a first hinge engaging groove portion coupled to the first hinge engaging groove portion so that an upper end of the first hinge engaging groove portion is inserted; A first pivot pin pivotably connected to the first boss and coupled with a first hinge engagement groove of the first pivot table; And a first receiving groove formed in the first hinge engaging groove so that one end of the first rotating pin is inserted and fixed in a state of being received in the first hinge engaging groove, The purpose can be achieved through the switch handle.
In addition, in the present invention, the first setting means includes a first stopper portion horizontally arranged to push the slide plate in the off-mode direction, and a second stopper portion vertically connected to one side of the first stopper portion, And a first hinge engaging groove portion coupled to the first hinge engaging groove portion so as to be coupled with the first hinge engaging groove portion; A first pivot pin pivotably connected to the first boss and coupled with a first hinge engagement groove of the first pivot table; And a first receiving groove formed in the first hinge engaging groove so that one end of the first rotating pin is inserted and fixed in a state of being received in the first hinge engaging groove, The purpose can be achieved through the switch handle.
In addition, in the present invention, a first latching protrusion is protruded on the inner surface of the first hinge-engaging groove portion which is in contact with the upper surface of the first boss, and a slide plate moved in the on- Off direction, so that the through hole can be completely included in the coupling hole, a first locking protrusion and a locking groove engaged with the first locking protrusion when the first locking block is rotated for setting or disengaging the setting, Purpose can be achieved.
Further, in the present invention, a purpose can be achieved through a switch handle for a circuit breaker which is protruded from the center of the first receiving groove in a state where the first fixing protrusion can be inserted and fixed into the coupling groove of the first turning pin.
According to the present invention, the second setting means is rotatably connected to the second boss provided inside the handle body, and the key knob is set so as to prevent the overtravel of the slide plate when the key knob is over rotated in the off- The purpose can be achieved through the switch handle for the breaker.
According to the present invention, the second setting means includes a second stopper portion horizontally disposed to prevent over-movement of the slide plate, and a second stopper portion vertically connected to one side of the second stopper portion, A second rotating base including a second hinge engaging groove portion coupled to the first hinge engaging groove; A second pivot pin pivotally connected to the second boss and coupled with a second hinge engagement groove of the second pivot table; And a second receiving groove formed in the second hinge engaging groove so that one end of the second rotating pin is inserted into the second hinge engaging recess when the second rotating pin is received in the second hinge engaging recess, The purpose can be achieved through the switch handle.
In addition, in the present invention, a second locking protrusion is protruded from the inner surface of the second hinge-engaging groove portion to be brought into contact with the upper surface of the second boss, and the upper surface of the second boss The object can be achieved through the switch handle for the circuit breaker, which is formed in the setting and setting release positions, respectively, when the second turning block for setting or unsetting is rotated, and the second latching protrusion and the latching groove for latching are respectively formed.
In the present invention, the second accommodating groove may be provided at the center thereof with a switch handle for a circuit breaker protruding from the second fixing protrusion, which can be inserted and fixed into the coupling groove of the second turning pin.

delete

As described above, by using the switch handle for a circuit breaker according to the present invention, it is possible to prevent the key knob from rotating in the on-mode direction in a state where the key knob is located on the off- It is possible to expect an effect of preventing power and electric shock accidents due to the rotation to the ON mode state by this effect.

In addition, when the switch handle for a circuit breaker according to the present invention is used, it is possible to prevent separation of the switch handle due to unintentional off-mode overrun when the key knob is quickly placed in the on- It is possible to solve the problem of re-coupling work between the switch handle and the knob projection due to the above-mentioned problems.

1 is a perspective view showing a state in which a switch handle for a general circuit breaker is separated from a circuit breaker on-off switching device.
FIGS. 2A and 2B show a rear view of the switch handle for the circuit breaker shown in FIG. 1, wherein FIG. 2A is an exploded perspective view and FIG. 2B is a combined perspective view.
FIGS. 3A and 3B show an off-mode state. FIG. 3A is a plan view showing a pivotal position of the key knob, and FIG. 3B is an operation rear view of FIG.
FIGS. 4A and 4B show on-mode states. FIG. 4A is a plan view showing the pivotal position of the key knob, and FIG. 4B is an operation rear view of FIG. 4A.
FIGS. 5A and 5B show a state in which the key knob is over-rotated in an off-mode state, FIG. 5A is a plan view showing an over-turning position of the key knob, and FIG. 5B is an operation rear view of FIG.
FIGS. 6A and 6B show a switch handle for a circuit breaker according to the present invention, wherein FIG. 6A is a front perspective view and FIG. 6B is a rear perspective view.
7A is an exploded perspective view illustrating a part of a switch handle for a circuit breaker according to the present invention.
7B is a perspective view illustrating a state in which the slide plate is coupled to the rotation plate of FIG. 7A.
Figs. 8A and 8B are plan sectional views schematically showing respectively the first setting means of Fig. 7B.
Fig. 8C is a front sectional view showing the first setting means of Fig. 8A. Fig.
Figs. 9A and 9B are plan sectional views schematically showing respectively the second setting means of Fig. 7B.
FIG. 9C is a front sectional view showing the second setting means of FIG. 9A. FIG.
Figs. 10A and 10B show an off-mode state, Fig. 10A is a plan view showing a pivotal position of the key knob, and Fig. 10B is an operation rear view of Fig. 10A.
Figs. 11A and 11B show the ON mode states. Fig. 11A is a plan view showing the pivotal position of the key knob, and Fig. 11B is an operation rear view of Fig. 11A.
Figs. 12A and 12B show a state in which the key knob is over-rotated in an off-mode state, Fig. 12A is a plan view showing an over-turning position of the key knob, and Fig. 12B is an operation rear view of Fig.
13 is an operation rear view showing a state in which the switch handle according to the present invention is separated in a state where the key knob is located on the off display portion.
Fig. 14 is an operation rear view showing a state in which the over-rotation is prevented in the off-mode state of Fig. 10b.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The key knob 202 and the key knob 202 are arranged in the same manner as in the prior art, as shown in FIGS. 6A to 9B. A cover body 204 detachably coupled to the other surface of the handle body 204 corresponding to the key knob 202 and having an entry hole 206 formed at the center thereof, (208).

Specifically, the key knob 202 is rotatably coupled to one surface of the handle body 204 by a rotation protrusion 210 formed on a surface of the key knob 202 in a circular shape.

The rotary plate 214 having the through hole 212 formed at the center and the guide protrusion 213 rising from the surface is coupled and fixed to the rotary protrusion 210 in an interlocking manner.

The through hole 212 of the rotating plate 214 thus formed is formed to coincide with a part of the insertion groove 216 formed in the rotation protrusion 210. In other words, the through hole 212 of the rotary plate 214 and the insertion groove 216 of the rotation protrusion 210 are inserted into the insertion groove 216 while the knob projection 104 described in the background art passes through the through hole 212 The knob projection 104 is formed so as to coincide with the planar shape seen from the front side (see FIG. 1).

As described above, the handle body 204 includes a rotation plate 214 interlocked with the rotation protrusion 210 of the key knob 202, And a slide plate 218 which is elastically supported by the elastic member 220 and slides in the on and off directions while being elastically supported by the elastic member 220.

The first and second fixing protrusions 222 and 224 protrude outward from the outer circumference of the rotary plate 214. The first and second fixing protrusions 222 and 224 are formed on the bottom surface of the handle body 204, Stopper projections 228 are formed to prevent rotation of the first and second projecting portions 222, 224.

Specifically, when the key knob 202 interlocked with the rotation plate 214 is over-rotated in the off-mode direction in the off-display unit 246 and the first fixing protrusion 222 is in close contact with the stopper protrusion 228, The turned key knob 202 is no longer able to turn over. That is, the key knob 202 functions to set an over-rotating position of the key knob 202.

When the key knob 202 interlocked with the rotation plate 214 rotates in the on mode direction and the second fixing protrusion 224 is closely attached to the stopper protrusion 228, It becomes a state in which it is correctly positioned. That is, the key knob 202 functions to prevent the key knob 202 from being over-rotated in the on-mode direction when the key knob 202 is positioned on the on-display unit 236.

The guide protrusion 213 of the rotary plate 214 is accommodated in the guide groove 219 of the slide plate 218 placed on the rotary plate 214. The guide groove 219 formed in the slide plate 218 is formed at a position spaced apart in one direction from the center of the slide plate 218 and is formed as a circular arc having the same curvature as the path along the rotation radius of the guide projection 213 And a linear groove 219b having an inflection point P in communication with one side of the curved groove 219a.

The straight groove 219b pushes the slide plate 218 in the direction of the elastic member 220, that is, in the off mode, with the guide protrusion 213 having a radius from the inflection point P toward the off mode As shown in Fig.

Therefore, when the guide protrusion 213 moves along the curved surface groove 219a at the inflection point P, the movement path of the guide protrusion 213 coincides with the curved surface groove 219a, Only the key knob 202 rotates in the on mode direction.

However, when the guide protrusion 213 is over-moved in the off-mode direction along the straight groove 219b at the inflection point P, the rotation path of the guide protrusion 213 coincides with the forming direction of the straight groove 219b As a result, the slide plate 218 is pulled in the off-mode direction while the guide protrusion 213 rotates along the path, that is, while the guide protrusion 213 moves along the straight groove 219b The slide plate 218 makes an over movement in the direction of the elastic member 220, that is, in the off mode direction.

When the slide plate 218 is slid, a guide member 248 for guiding the edge of the slide plate 218 is disposed corresponding to each side of the slide plate 218 And is fixed to the corresponding position of the handle body 204 in the state of FIG.

The first and second bosses 252 and 254 having the first and second hinge holes 252 and 254 formed on both sides of the bottom surface of the handle body 204 on which the slide plate 218 is moved in the on- (256, 258), respectively.

The first and second bosses 256 and 258 are provided with first and second setting means 232 and 234, respectively.

When the key knob 202 is positioned on the off-display unit 246, the first setting unit 232 determines that the insertion hole 216 of the rotation protrusion 210 and the through hole 212 of the rotation plate 214 And the slide plate 218 is partially obscured by the through hole 250 formed in the center of the slide plate 218 and the rotary plate 214 And a setting function for preventing the key knob 202 from rotating in the on mode direction.

A first stopper 260 which is horizontally disposed and which pushes a corresponding side of the slide plate 218 and a second stopper 260 which is vertically disposed on one side of the first stopper 260, And a first hinge connection groove portion 262 connected to the first boss 256 in a state of being exposed to the front surface of the handle body 204 so as to be rotatably coupled to the first boss 256 And a first pivot pin 240 coupled with the first hinge engagement recess 262 of the first pivot 238.

The first hinge coupling groove 262 is formed with a first receiving groove 264 so that one end of the first turning pin 240 is inserted into the first hinge coupling groove 262 while being inserted into the first hinge coupling groove 262. [ ).

A first fixing protrusion 268 is formed in the center of the first receiving groove 264 so as to be inserted and fixed into a coupling groove 266 of the first turning pin 240, .

A first locking protrusion 270 protrudes from a corresponding inner surface of the first hinge engagement groove 262, which is in contact with the upper surface of the first boss 256.

As described above, the upper surface of the first boss 256 is set and disengaged so as to maintain the overlapping state of the through holes 250 of the slide plate 218 including the through holes 212. In addition, The setting position and the setting release position of the first pivot 238 are set at the time of the rotation of the first pivot 238 for setting and disabling the turning of the knob 202 in the on- And hooking grooves 272 and 274 are formed at corresponding setting positions at which the first hooking protrusion 270 is hooked so as to inform the user (see FIG. 8C).

The second setting means 234 may include a setting function for inhibiting over movement of the slide plate 218 in order to prevent arbitrary over-rotation of the key knob 202 pivoted by the off- And a setting release function for the over movement of the slide plate 218. [

A second stopper portion 276 disposed horizontally and blocking the slide plate 218 and a second stopper portion 276 extending vertically to one side of the second stopper portion 276 toward the bottom inner surface of the handle body 204 A second turning base 242 including a second hinge engaging groove 278 connected to the second boss 258 and being rotatably coupled to the second boss 258 in a state exposed to the front surface of the handle body 204, And a second pivot pin 244 coupled to the second hinge engagement recess 278 of the second pivot 242.

A second receiving groove 280 is formed in the center of the second hinge engaging groove 278 so that the second receiving hole 274 is inserted into the second hinge engaging groove 278, ). In addition, a second fixing protrusion 284, which can be inserted and fixed into the coupling groove 282 of the second turning pin 244, is protruded and formed at the center of the second receiving groove 280.

A second locking protrusion 286 protrudes from the inner surface of the second hinge engagement groove 278 which is in contact with the upper surface of the second boss 258. The upper surface of the second boss 258 When the key knob 202 rotated by the off-display unit 246 is set to inhibit an arbitrary over-rotation in the off-mode direction or when the second turn table 242 is turned to release such setting, (See FIG. 9C) are formed at corresponding positions where the second locking protrusion 286 is hooked so as to notify the setting position and the setting release position of the second locking protrusion 242, respectively.

The slide plate 218 is formed at the center thereof with a coupling hole 250 having a shape that can completely accommodate the through hole 212 as described above. At this time, the slide plate 218 is turned on and off The knob protrusion 104 is in a state in which the knob protrusion 104 can pass through the coupling hole 250 or can not pass through the coupling hole 250 according to the position where the coupling hole 250 and the through hole 212 are overlapped with each other .

An elastic member 220, which constantly pushes the slide plate 218 in the ON mode direction, is elastically supported between one side surface of the slide plate 218 and the inner side surface of the handle body 204.

First, in order to couple the knob protrusion 104 formed on the connecting rod 102 of the on-off switching device 100 and the switch handle 200 to each other, When the key knob 202 is further turned over in the off-mode direction in the off-display mode as shown in FIGS. 12A and 12B, the rotation plate 214 interlocked with the key knob 202 rotates together .

The guide protrusion 213 of the rotary plate 214 is positioned at the inflection point 219 of the guide groove 219 of the slide plate 218 while the rotary plate 214 is over- P and moves along the linear groove 219b. While the guide protrusion 213 rotates and moves along the linear groove 219b, the slide plate 281 further moves in the off-mode direction to compress the elastic member 220 as described above .

When the key knob 202 is overcoupled and the over slide of the slide plate 218 is completed, the through hole 212 of the rotary plate 214 is completely contained in the engagement hole 250 of the slide plate 218 And overlapped in the arrangement state. In this state, the knob protrusion 104 is inserted into the insertion groove 216 of the key knob 202 through the coupling hole 250 and the through hole 212. Of course, in this state, the knob protrusion 104 inserted into the insertion groove 216 of the key knob 202 can be pulled out again.

When the key knob 202 is rotated back to the position of the off-display unit 246 in a state where the key knob 202 is over-rotated as described above, the elastic member 220 The slide plate 218 moves in the ON mode direction and stops moving in a state where the slide plate 218 is in contact with the guide member 248 positioned in the corresponding direction. In addition, the guide protrusion 213 of the rotation plate 214 And is again located at the inflection point (P) of the guide groove (219).

When the key knob 202 is positioned on the off-display portion 246 as described above, the engaging hole 250 of the slide plate 218 partially deviates from one side of the through hole 212 of the swing plate 214, The slide plate 218 overlaps with one side of the through hole 212 in a partially obscured state.

Since the slide plate 218 is positioned behind the knob protrusion 104 when the slide plate 218 partially covers one side of the through hole 212 as described above, The knob protrusion 104 inserted into the groove 216 is in a state of being locked in the separating direction by the slide plate 218. [

As a result, the knob projection 104 is not separated from the insertion groove 216 of the key knob 202 (see FIG. 7B).

11A and 11B, when the key knob 202 is positioned on the ON display part 236, the guide protrusion 213 is moved from the inflection point P to the curved surface groove part of the slide plate 218 219a. At this time, the slide plate 218 remains in a stopped state.

When the key knob 202 is positioned on the display unit 236, the slide plate 218 overlaps the one side of the through hole 212 of the rotating plate 214, Since the slide plate 218 partially covering the knob projection 218 is positioned behind the knob projection 104 as described above, even when the key knob 202 is positioned on the ON display portion 236, The key hole 104 is not separated from the through hole 212 as well as the insertion groove 216 of the key knob 202. [

13 is an operation rear view illustrating a state in which the switch handle according to the present invention is detached in a state where the key knob 202 is positioned on the off-display portion 246 as shown in FIG. 10A.

7A, 8A, 8B, and 8C, when the first turning pin 240 of the first setting means 232 is rotated from the front surface of the handle body 204 by using a tool such as a driver, The first stopper portion 260 of the first pivot 238 is rotated as shown in FIG. 8C. The first locking protrusion 270 is located in the locking groove 272 and is set to be locked in the locking groove 274.

Accordingly, the first stopper 260 of the first pivot 238 pushes the slide plate 218 in the off-mode direction. In other words, the key knob 202 is moved to the position where the slide plate 218 is located in the over-turn state at the off-display portion 246. As a result, the through hole 212 of the rotary plate 214 is partially overlapped with the through hole 212 in the coupling hole 250 of the slide plate 218 partially covering the through hole 212.

As a result, the knob 202 can be separated from the coupling hole 250 of the slide plate 218 in a state where the key knob 202 is positioned on the off-display portion 246, And the on / off switching device 100 can be easily separated from each other.

When the first stopper portion 260 moves the slide plate 218 in the off-mode direction as described above, the guide protrusion 213 of the rotary plate 214 moves to the corresponding position facing the inflection point P That is, the contact point S of the guide groove 219.

When the guide protrusion 213 positioned at the inflection point P is brought into close contact with the contact point S as described above, the guide protrusion 213 is rotated in the ON direction, that is, The path of the curved surface groove 219a of the guide groove 219 is not aligned with the movement of the slide plate 218, that is, the path of the curved surface groove 219a deviates from the onward turning locus of the guide protrusion 213 State.

For example, in this state, when the key knob 202 is turned in the ON direction, the guide protrusion 213 pushes the slide plate 218 in the ON mode direction, while the guide protrusion 213 turns in the ON direction, that is, Since the state in which the first stopper portion 260 prevents the slide plate 218 from moving in the on mode direction is the same as the condition before the key knob 202 is moved to the state in which the path of the curved groove portion 219a coincides with the path of the curved groove portion 219a, So that the on-mode rotation of the motor can not be performed at all. Accordingly, it is possible to prevent a power accident or an electric shock accident during operation due to the on-mode rotation of the key knob 202 at the time of assembling and separating.

When the key knob 202 is overlapped with the through hole 212 in a state where the key knob 202 is positioned on the off display portion 246 and the ON display portion 236, The slide plate 218 partially covers one side of the through hole 212. As a result, In addition, when the key knob 202 is in an over-rotating state in the off-mode direction from the off-display unit 246 or when the key knob 202 is located in the off-display unit 246 and the slide plate 218 is over- The coupling hole 250 is formed in a shape that can include the entire through hole 212. [

Fig. 14 is an operation rear view showing a state in which the over-rotation is prevented in the off-mode state of Fig. 10A.

14 and 10A, the second turning pin 234 of the second setting means 234 exposed on the front surface of the handle body 204 in a state in which the key knob 202 is rotated by the OFF display portion 246, 244 are rotated using a tool such as a screwdriver to rotate the second stopper portion 276 of the second pivot table 242 interlocked with the screw. At this time, as shown in Figs. 7A, 9A, 9B, and 9C, the second locking protrusion 286 is set to be engaged with the locking groove 290 in the locking groove 288. [

The second stopper portion 276 is brought into a state of being in close contact with one surface of the slide plate 218 which is slidably moved in accordance with the off-display portion 246. In this state, when the key knob 202 is further turned over from the off-display unit 246 in the off-mode direction, the guide protrusion 213 of the rotating plate 214 interlocking with the key knob 202 moves the slide plate 218 in the off- However, as described above, since the second stopper portion 276 prevents movement of the slide plate 218 in the off-mode direction, the over-rotation of the key knob 202 is consequently accomplished .

Accordingly, when the operator switches the key knob 202 from the on-display unit 236 to the off-display unit 246 in a prompt mode switching operation, the overcurrent of the off mode causes the knob 202 to move between the handle body 204 and the knob projection 104 It is possible to prevent an arbitrary separation accident.

When the switch handle 200 for a circuit breaker according to the present invention is used, the position of the slide plate 218 is further moved in the off-mode direction by using the first pivot 238 of the first setting means 232 The rotation of the guide protrusion 213 can be restrained so that the key knob 202 is rotated in the on mode direction in the process of detaching and rejoining the key knob 202 in the off- And electric power accident can be prevented.

When the switch handle 200 for a circuit breaker according to the present invention is used, the slide plate 218 is prevented from moving in the off mode direction by using the second turn table 242 of the second setting means 234, It is possible to prevent the switch handle 200 from being separated due to the unintentional off-mode overrun when the key knob 202 is quickly shifted from the on-display portion 236 to the off-display portion 246.

When the first and second turning tables 238 and 242 of the first and second setting means 232 and 234 rotate to set or unset the moving position of the slide plate 218, The first and second locking protrusions 270 and 286 formed on the second turning blocks 238 and 242 respectively have the locking grooves 272 and 274 and 288 formed in the corresponding first and second bosses 256 and 258, 290 so that it is possible to prevent arbitrary setting or arbitrary setting cancellation due to vibrations, shocks, and self weight transmitted from the outside.

Since the first and second pivots 238 and 242 are made of synthetic resin and can easily be elastically deformed, the first and second pivots 270 and 286 are elastically deformed to deform the first and second bosses 256, and 258 can be easily engaged with or disengaged from the engaging grooves 272, 274, 288, and 290.

10, 200: Switch handle
12, 202: key knob
14, 204: handle body
16, 208: cover plate
17, 206: entry ball
18: Handle portion
20, 210: turning projection
22, 212: through hole
24, 214:
26, 216: insertion groove
40, and 236:
42, 246:
46: Rotating plate
48, 220: elastic member
50: Fixing projection
52: jaw
54, 228: Stopper projection
56: Hinge shaft
58:
60:
62, 213: guide projection
100: ON / OFF switching device
102: connecting rod
104: Knob projection
106: Support housing
108: Breaker
110: On-off button
218: slide plate
219: Guide groove
222: first fixing protrusion
224: second fixing protrusion
232: first setting means
234: second setting means
238: 1st turning circle
240: first rotating pin
242: The second turning base
244: second rotating pin
248: Guide member
250: coupling ball
252: First hinge ball
254: second hinge ball
256: 1st boss
258: The second boss
260:
262: first hinge engagement groove
264: first receiving groove
266, 282:
268: first fixing projection
270: First stopping motion
272, 274, 288, 290:
276:
278: second hinge engagement groove
280: second receiving groove
284: second fixing projection
286: a second obstacle

Claims

A key knob 202 having a rotation protrusion 210 on one side of which an insertion groove 216 is formed and to which the rotation protrusion 210 is rotatably coupled to the handle body 204;
A rotation plate 214 fixed to the rotation protrusion 210 of the key knob 202 and having a through hole 212 at a position corresponding to the insertion groove 216;
In a state in which the key knob 202 is elastically supported in the direction of the on and off modes, the key knob 202 is slidably moved on the rotation plate 214, A slide plate 218 which is arranged so as to entirely include the through hole 212 of the rotary plate 214 in accordance with the rotation or in which the engagement hole 250 is formed so as to partially cover the through hole 212;
A guide protrusion 213 protruding from the rotary plate 214 at a position spaced apart from the through hole 212;
The guide protrusion 213 formed on the slide plate 218 for interlocking with the guide protrusion 213 and interlocked with the turn plate 214 has a radius and is moved in the on and off directions depending on the position of the slide plate 218 A guide groove 219 for allowing the guide member 219 to move in a direction in which it is elastically supported;
The guide groove 219 has a curved surface groove 219a formed in the slide plate 218 at a curvature radius equal to the radius of rotation of the guide protrusion 213 and a curved surface 219a at the inflection point P of the guide groove 219, 218) is disposed so as to be movable in a direction in which it is elastically supported, and a linear groove portion (219b) connected to the curved groove portion (219a)
A first boss 256 provided inside the handle body 204 and a state in which the slide plate 218 pivotally connected to the first boss 256 and moved in the ON mode direction is moved in the off direction The first setting means (232)
The first setting means 232 includes a first stopping portion 260 horizontally arranged to push the slide plate 218 in the off mode direction and a second stopping portion 260 vertically connected to one side of the first stopping portion 260 And a first hinge engagement groove (262) coupled with the upper end of the first boss (256).
A first pivot pin 240 pivotally connected to the first boss 256 and coupled with the first hinge engagement recess 262 of the first pivot 238;
The first hinge connection groove 262 is formed in the first hinge connection groove 262 and the first hinge connection groove 262 is formed in the first hinge connection groove 262, And a groove (264).

delete

The method according to claim 1,
A first locking protrusion 270 protrudes from the inner surface of the first hinge engagement groove 262 which is in contact with the upper surface of the first boss 256, The slide plate 218 moved in the mode direction is pushed in the off direction so that the through hole 212 can be completely contained in the engaging hole 250. When the first pivot 238 rotates for setting or disengaging the setting, (272, 274) to be engaged with the switch body (270) are formed at the setting and setting release positions, respectively.

The method according to claim 1,
Wherein a first fixing protrusion (268) that can be inserted and fixed into the coupling groove (266) of the first rotation pin (240) protrudes from the center of the first receiving groove (264) Switch handle.

The method according to claim 1,
And the key knob 202 is pivotably connected to the second boss 258 provided in the handle body 204 so that the key knob 202 prevents the over slide of the slide plate 218 when the key knob 202 over- And a second setting means (234) for setting the second switch means (234).

8. The method of claim 7,
The second setting means 234 includes a second blocking portion 276 disposed horizontally so as to block the over movement of the slide plate 218 and a second blocking portion 276 vertically connected to one side of the second blocking portion 276 A second turning base 242 including a second hinge engaging groove 278 coupled with a structure in which the upper end of the second boss 258 is inserted;
A second pivot pin 244 pivotably connected to the second boss 258 and coupled with the second hinge engagement recess 278 of the second pivot 242;
The second hinge connection groove 278 is formed in the second hinge connection groove 278 and the second hinge connection groove 278 is formed in the second hinge connection groove 278, And a groove (280) formed on the bottom surface of the switch handle.

9. The method of claim 8,
A second locking protrusion 286 protrudes from the inner surface of the second hinge engagement groove 278 which is in contact with the upper surface of the second boss 258. The upper surface of the second boss 258 The engaging grooves 288 and 290 engaged with the second engaging protrusion 286 during the rotation of the second pivot 242 for setting or disengaging the overrunning of the plate 218 are set and reset Respectively, of the switch handle.

9. The method of claim 8,
And a second fixing protrusion (284) protruding from the center of the second receiving groove (280) so as to be inserted and fixed into the coupling groove (282) of the second turning pin (244) Switch handle.