KR19990055497A - Position switch for vacuum breaker - Google Patents

Abstract

The present invention relates to a position switch of a vacuum circuit breaker, and the position switch for grasping the position of the trolley of the vacuum circuit breaker is installed in the trolley, and the position switch is smoothly operated so that the position switch is stably fixed to external impact. It is to prevent the damage and to accurately determine the position of the loan portion to improve the reliability of the product.

To this end, the present invention is a cradle (1), the balance portion (2) provided on the upper portion of the cradle (1), the main circuit portion (3) coupled to the rear of the balance portion (2), the balance portion ( A base (4) installed at the lower part of 2), a micro switch (6) installed to grasp the position of the trolley portion (2), and a switchboard (10) provided at an outer side to surround the respective components; It is composed of a trolley portion inlet and outlet means for drawing in and out of the trolley portion 2 and micro switch operating means for operating the micro switch 6 to grasp the trolley portion 2 inlet and release position.

Description

Position switch for vacuum breaker

The present invention relates to a vacuum circuit breaker, and more particularly, to a position switch for a vacuum circuit breaker.

In general, a vacuum circuit breaker is a device for protecting circuits and devices that quickly disconnects a circuit by arcing in a vacuum vessel generated during opening and closing of a normal load and breaking an accident current.

As shown in FIG. 1, the vacuum circuit breaker includes a cradle 1, a main circuit unit 3, a trolley 2, and an auxiliary device, and a base 4 is coupled to a lower portion of the trolley. All the parts are surrounded by the switchboard 10 installed at the outer side.

The main circuit part 3 is provided with a current conducting part, an insulating part, and an arc extinguishing device. The current interrupting part is a peripheral element constituting a contact. The contact is composed of a movable contact and a fixed contact. When the vacuum circuit breaker is in the 'closed' state in conjunction with the machine moving part, the fixed contact point and the movable contact point are in contact with each other, and sufficient pressure is applied to the movable contact point to withstand the fault current flowing in the circuit. The movable contact is separated at the proper speed to the proper breaking distance.

In addition, the insulating part has an insulating function and is made of an epoxy mold or a BMC resin.

In addition, the extinguishing device extinguishes the arc generated at the time of contact opening and closing of the fault current of the vacuum circuit breaker.

The trolley portion 2 refers to a mechanical mechanism for opening and closing the contact of the vacuum circuit breaker, and corresponds to all the operating devices configured on the front side of the vacuum circuit breaker.

In addition, the auxiliary device is an accessory device for operating the vacuum circuit breaker normally, and corresponds to a control device, an interlock device, a drawing device, and a drawing device.

As described above, the position of the vacuum circuit breaker bogie 2 (test or connector position) is determined by the position of the vacuum circuit breaker position switch provided in the cradle 3 of the trolley 2, the position of the vacuum circuit breaker position switch 2 and 3, the support 8 is fixedly coupled to the side of the cradle 1, the support 8 is installed in the Test (Test) and Connected (Connected) position, The micro switch 6 is coupled to the upper one side of the respective support 8, respectively, and operated according to the position of the trolley portion 2 to generate a signal, and rollers respectively formed below the micro switch 6; 7) and a guide 5 coupled to the outer surface of the trolley portion 2 in contact with the roller 7 to operate the micro switch 6.

The position switch for a conventional vacuum circuit breaker configured as described above is placed on the cradle 1 of the vacuum circuit breaker with the main circuit part 3 coupled thereon, and then pushes the cart 2 to the rear side of the vacuum circuit breaker. The guide 5 coupled to the outer surface of the cart 2 is in contact with the microswitch 6 provided at the front side of the cradle 1.

That is, when the cart 2 is moved to the rear side of the vacuum circuit breaker, the front side of the cradle 1 of the micro switches 6 respectively coupled to the upper one side of the support 8 fixedly coupled to the side of the cradle 1. The roller 7 formed in the lower part of the micro switch 6 provided in the contact with the guide 5, and the roller 7 is pushed by the guide 5 when pushing the cart 2 continuously.

When the roller 7 is pressed and the micro switch 6 is connected, a signal is generated from the micro switch 6, and the current position of the cart 2 is in a test position state by the generated signal. It is grasped.

When the cart 2 continues to the rear side of the vacuum circuit breaker after the test position, the roller 7 and the guide 5 of the micro switch 6 installed on the front side of the cradle 1 fall, When the roller 7 of the micro switch 6 and the guide 5 are separated, the cart 2 is pushed in continuously, and the cradle 1 of the micro switch 6 fixedly coupled to the cradle 1 is pushed in. The roller 7 and the guide 5 formed in the lower part of the micro switch 6 provided on the rear side of the () contact.

When the cart 2 is continuously pushed, the roller 7 of the micro switch 6 in contact with the guide 5 is pressed and the micro switch 6 is connected so that the signal generated by the micro switch 6 By this, it is understood that the current position of the cart 2 is in the connected position.

As described above, when the position of the cart portion 2 is in the connect position state, since the terminal of the main circuit portion 3 coupled to the rear of the cart portion 2 is completely inserted into the bushing terminal of the cradle 1, the vacuum is performed. The breaker is powered by the bus.

Here, when taking out the balance part 2, it is made in the reverse order to the above.

However, such a conventional position switch for a vacuum circuit breaker has a cumbersome problem of wiring to the micro switch is coupled to the cradle and connected to the switchboard.

In addition, since the micro switch is exposed to the outside of the vacuum circuit breaker, there was also a problem that the micro switch is damaged by contact or external impact when carrying the cart or cradle or when operating the switchboard.

The present invention has been made to solve the above problems, the position switch for grasping the position of the trolley of the vacuum circuit breaker is installed in the trolley, and the position switch is stably fixed by operating the position switch smoothly Its purpose is to improve the reliability of the product by preventing the damage caused by external impact and accurately grasping the position of the loan portion.

In order to achieve the above object, the present invention is to grasp the cradle, the trolley provided in the upper portion of the cradle, the main circuit portion coupled to the rear of the trolley, the base provided in the lower portion of the trolley, the position of the trolley What is claimed is: 1. A switch comprising: a micro switch installed to surround the switch; A position switch for a vacuum circuit breaker is provided, comprising: a loan unit inlet and an outlet unit for introducing and discharging the loan unit, and a micro switch operating unit for operating the micro switch to grasp the loan unit inlet and release position.

1 is a side view showing a conventional vacuum circuit breaker.

Figure 2 is a perspective view showing a state in which the conventional trolley portion of the vacuum circuit breaker pulled in, out.

3 is an operating state diagram showing a state in which a conventional position switch of the vacuum circuit breaker is operated.

Figure 4 is a perspective view showing the position switch of the present invention of the vacuum circuit breaker.

5 is an operating state diagram showing a state in which the position switch of the present invention of the vacuum circuit breaker is operated.

<Description of the symbols for the main parts of the drawings>

101: bracket 102: shaft

103: push plate 104: wing

105: worm gear 108: lever

109: projection 110: guide member

111: Longevity

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 4 and 5.

Since the vacuum circuit breaker has been mentioned in the conventional configuration, overlapping portions will be omitted, and the same reference numerals will be used for the same structure.

Figure 4 is a perspective view showing a position switch of the vacuum circuit breaker of the present invention, Figure 5 is an operating state diagram showing a state in which the position switch of the vacuum circuit breaker is operated, the present invention draws in and out the cart (2) of the vacuum circuit breaker A trolley pull-in / out means is provided, and a micro-switch operating means for operating the micro-switch 6 to grasp the pull-in / release position (test or connector position) of the trolley 2 is provided.

Brackets 101 are fixedly coupled to the base 4 of the trolley portion 2, and micro switches 6 are coupled to both sides of the brackets 101, respectively, and the brackets 101 are bolts 113. Is firmly coupled to the base (4).

The trolley inlet / outlet means is coupled to the shaft 102 on both sides of the base 4 of the trolley 2 so as to be rotatable, and the worm rotates the shaft 102 at an appropriate position of the shaft 102. A worm gear 105 composed of a 106 and a worm wheel 107 is coupled, and levers 108 pivoted with the shaft 102 are coupled to both ends of the shaft 102, respectively. Protrusions 109 are formed at the end of each), and the projections 109 are inserted and coupled to guide means in the switchboard 10 to guide the movement of the protrusions 109.

The guide means is provided with a guide member 110 on both sides of the inner surface of the switchboard 10, the long hole 111 for guiding the projection 109 so that the projection 109 is moved up and down on the guide member 110; ) Is formed.

The micro switch operating means has a push plate 103 coupled to a predetermined position on the outer periphery of the shaft 102, and a roller of the micro switch 6 coupled to the bracket 101 on the outer periphery of the push plate 103. A plurality of vanes 104 are formed in contact with 7 to operate the microswitch 6.

In order to prevent the push plate 103 from appearing on the outer circumference of the shaft 102, the push plate 103 is coupled to the shaft 102 by a hinge 112.

The operation of the present invention configured as described above is as follows.

First, in order to grasp the position state (test or connection position) of the trolley portion 2 of the vacuum circuit breaker, a plurality of micro switches 6 are placed on the bracket 101 fixed to the lower portion of the base 4 of the trolley portion 2. And a worm gear 105 is installed at a predetermined position of the shaft 102 rotatably coupled to both sides of the base 4 of the trolley portion 2 so that the worm 106 of the worm gear 105 is removed. When rotated, since the worm wheel 107 of the worm gear 105 engaged with the worm 106 rotates, the shaft 102 coupled to the worm gear 105 rotates.

Since the levers 108 are respectively coupled to both ends of the shaft 102 coupled to both sides of the base 4 of the cart 2, the levers 108 are pivoted along the shaft 102. 2) is moved along the top surface of the cradle (1), and the incoming and outgoing.

At this time, the position of the incoming and outgoing bogie 2 is rotated together along the shaft 102 by the push plate 103 hinged to the predetermined position of the outer periphery of the shaft 102, and the outer periphery of the push plate 103. One of the blades 104 of the plurality of blades 104 formed at the edge is in contact with the roller 7 of the micro switch 6 of any one of the plurality of micro switches 6 coupled to the bracket 101 Since the switch 6 is connected, the position (test or connection position) of the balance unit 2 is grasped according to the signal generated by the micro switch 6.

In more detail, when the worm 106 of the worm gear 105 coupled to the proper position of the shaft 102 is rotated clockwise in the drawing, the worm wheel 107 engaged with the worm 106 is counterclockwise. The shafts 102 hinged to the worm wheel 107 are rotated counterclockwise, so that the levers 108 coupled to both ends of the shaft 102 are also counterclockwise, that is, the front of the vacuum circuit breaker. It is rotated to the side.

At this time, the projection 109 rotatably hinged to the end of each lever 108 is inserted into the long hole 111 of the guide member 110 coupled to both sides of the inner surface of the switchboard 10, so that the half The projection 109 is moved along the long hole 111 by the lever 108 rotated in the clockwise direction, thereby introducing the cart 2 into the rear side of the vacuum circuit breaker, that is, the cart 2.

When the trolley portion 2 is retracted, the push plate 103 coupled to a predetermined position of the outer periphery of the shaft 102 rotates counterclockwise along the rotated axis 102 so that the outer circumference of the push plate 103 is achieved. One of the plurality of blades 104 formed in the edge of the micro switch 6 of any one of the micro switch 6 is fixed to the bracket 101 coupled to the lower surface of the base (4) Since the micro switch 6 is connected by pressing the roller 7, it is understood that the position of the cart 2 is in the connected position by the signal generated by the micro switch 6.

When the worm 106 of the worm gear 105 is rotated counterclockwise, the worm wheel 107 engaged with the worm 106 is rotated in a clockwise direction, and the shaft coupled to the worm wheel 107 ( 102 also rotates clockwise, so the lever 108 hinged to both ends of the shaft 102 is rotated to the rear side of the vacuum circuit breaker.

When the lever 108 is rotated to the rear side of the vacuum circuit breaker, the projection 109 of each lever 108 is moved along the long hole 111 of the guide member 110 coupled to both sides of the inner surface of the switchboard 10. The trolley portion 2 is moved to the front side of the vacuum circuit breaker, that is, the trolley portion 2 is drawn out.

At this time, any one of the blades 104 of the blade 104 of the push plate 103 coupled to the shaft 102 when the cart portion 2 is pulled out, the micro switch of any one of the micro switch 6 ( The micro switch 6 is connected to contact the roller 7 of 6) and the signal is generated at the micro switch 6 by the signal generated by the micro switch 6 because the micro switch 6 is connected. It is understood that the position of the cart 2 is in a test state.

As described above, the present invention has an effect of preventing the position switch from being damaged due to external impact or worker's sub-circumference by providing a position switch in the balance portion that grasps the position of the balance portion.

In addition, since a plurality of vanes are formed at the outer periphery of the plate and the plurality of vanes are formed at the outer periphery of the shaft rotated to pull in and release the trolley, and the plurality of vanes are formed by the vanes. Since the operation of the switch is smoothly the operation of the micro-switch also has the effect of improving the reliability of the product.

Claims (6)

A cradle, a trolley provided at the top of the cradle, a main circuit unit coupled to the rear of the trolley, a base provided at the bottom of the trolley, a micro switch provided to grasp the position of the trolley, In a switchboard configured to be enclosed to enclose; A loan loan inlet and a means for introducing and withdrawing the loan; Position switch for a vacuum circuit breaker, characterized in that composed of a micro switch operating means for operating the micro switch to determine the incoming and outgoing position of the cart. The method of claim 1, Fixing the bracket to the base of the trolley portion, the position switch for the vacuum circuit breaker, characterized in that the micro switch is coupled to both sides of the bracket. The method of claim 1, The trolley retracting and discharging means includes a shaft rotatably coupled to both sides of the base of the trolley, A worm gear coupled to an appropriate position of the shaft to rotate the shaft; Levers coupled to both ends of the shaft and each having protrusions formed at end portions thereof so as to rotate like shafts, Position switch for a vacuum circuit breaker, characterized in that consisting of the guide means installed in the switchboard to guide the movement of the projection is inserted into the projection. The method of claim 3, The guide means includes guide members respectively provided on both sides of the inner surface of the switchboard; The position switch for the vacuum circuit breaker, characterized in that formed in the guide member consisting of a long hole for guiding the projection to move up and down. The method according to claim 1 or 2, Micro-switch operating means is a push plate coupled to a predetermined position on the outer periphery of the shaft, A plurality of position switches for the vacuum circuit breaker is formed on the outer periphery of the push plate, the blades for operating the micro switch while in contact with the roller of the micro switch coupled to the bracket. The method of claim 5, And a push plate coupled to the outer periphery of the shaft by a hinge so as to prevent the push plate from appearing when the shaft rotates.