Electric motor of spring setting device in air automatic switch

FIELD: electricity.

SUBSTANCE: electric motor includes the first frame provided with a hole to insert the bearing and a pair of holes to insert brush holders; the second frame having the hole to insert bearing and through hole for the shaft; bearings, each of which is inserted in holes for insertion of bearings, which are made in the first and the second frames; shaft with possibility of turn and connected to the first and the second frames through bearings due to the fact that shaft passes via through hole for shaft in the second frame; collector connected to shaft; stator winding rotating the shaft; brush holder connected to stator winding through electric line; and brush inserted in brush holder in position of elastic spring support for bringing it into contact with collector; at that, brush holder has the shape of rectangular parallelepiped and includes the plate interlocking the lower part and arranged at the bottom for interlocking of lower part; opened by being unbent during unbending process, and part fixing the electric line so that electric line can be attached to external wall by being bent during bending process.

EFFECT: reduction of prime cost of drive electric motor owing to excluding the insulator of brush holder, reduction of labour costs for soldering to attach the stator winding by means of improved design of brush holder and hole providing convenient and reliable insertion of brush holder into the first frame.

4 cl, 10 dwg

[Technical FIELD]

The following description relates generally to the motor, and in particular, to the motor device of the winding of the spring in the air circuit-breaker, in which the first and second frames are made of plastic with the addition of fiberglass to facilitate insertion into the bearing by dense planting and usually insulator brush holder removed to reduce the cost of the motor, and a brush holder and a hole for insertion of the brush holder in the first frame, in which is inserted into the brush holder, structurally enhanced to provide greater convenience and density of the fixed insertion of the brush holder into the hole for insertion of the brush holder in the first frame, and to reduce the labor required for the soldering for connection to the windings stator.

[PRIOR art]

In the General case air circuit breaker includes a stationary contactor and the movable contactor is moved in a United position for closing the conductive circuit by contact with the fixed contactor and the position of the interrupt (trip) for tripping conductive circuit by separating from the stationary contactor, and provides continuous movable and fixed contacts of the contactors for the current flow, but when the abnormal condition (forces the nom current, caused, for example, short circuit and ground fault)that emerged in the electrical line, such as a transmission line, distribution line and private transformer installation, the movable contactor is quickly separated from the stationary contactor to interrupt the current flow and thereby protect the unit load, such as motor, transformer or electric line, from the abnormal current. Air circuit breaker opens the movable and the fixed contactors for retracting the compressed air and the discovery of the electric arc generated when an abnormal current.

As noted above, the air circuit breaker is used for the transmission of high voltage current to the power station or distribution station or to disconnect power from them and installed, if necessary, with the Executive device for fast interrupt or branch point of contact between the fixed contactor and a movable contactor. Ways to actuate the actuating devices generally fall into the way of manual control, the control method using a solenoid and the way to steer by means of a spring.

In an air circuit-breaker with electro-mechanical control method through the Yu spring breaking spring elastically connected to one side of the axis of the Cam, collected clockwork Cam connected with a link, which, in turn, is connected to a movable contactor; a handheld device, winding, turning the axis of the Cam using a hand lever, or electric winding device that uses an electric motor connected to the axis of the Cam. The axis of the Cam is rotated until the main energy with the added torque maximum accumulated in breaking the spring using a winding device. Optionally releases the latch to rotate the axis of the Cam using the accumulated energy of the breaking of the spring, and consistently geared link separates the movable contactor from the fixed contactor to turn off the current.

FIGURE 1 is a General view of the configuration of a typical air circuit breaker, Figa, 2b and 2C are schematic image, sequentially showing the operating state of the actuator.

According to FIGURE 1, 2A, 2b and 2C typical air circuit breaker includes a connecting spring (11)selectively separating or connecting the point of contact between the fixed contactor (3) and a movable contactor (5) for opening and closing the conductive circuit, the actuating device (1)comprising a connection (15), disable the spring (21) of IAS Cam (30), the drive motor (50)rotates the axis of the Cam (30)and the winding device (40), including the site of the gearbox (60) and the secondary gear (70).

Next, with reference to Figa, 2b and 2C will be described actuator (10) typical air circuit breaker. On Figa shows the initial state of the actuator (1), in which the point of contact between the fixed contactor (3) and a movable contactor (5) is open.

Then the axis of the Cam (30) is rotated by a drive motor (50) or a crank arm (not shown)and the drive lever (16) is rotated due to rotation of the winding of the Cam (12), concatenated with the axis of the Cam to compress the connecting spring (11) in the condition depicted in .2b, that is, in the state of the completed winding. Clockwork Cam (12) due to the energy accumulated by the spring (11), supports the balance of forces due to the lever switch (14)in contact with the connector latch (13). The connecting link enable (17)in contact with the connecting solenoid (not shown), is in a position that provides a lever switch (14).

Then, when the user clicks the join button or rotate the lever on (14), allowing connection of the solenoid to move the connecting link enable (17) down the connective C is clicking (13) exempts the crown of the Cam (12), to pass the connection (15) the accumulated force of the spring (11) via the drive lever (16). Respectale-closing axis (10) is rotated clockwise, allowing the contacting of the contact points of the fixed contactor (3) and movable contactor (5) through respectale-closing lever (20), rotating in the clutch with respectale-closing axis (10), and stretching tripping spring (21), the condition which is presented on Figs. The contact condition of the contact points between the fixed contactor (3) and a movable contactor (5), i.e. the balance of forces of the United air circuit breaker, supported by razmetelovo lever (23) through the connection (15) and ratemycameltoe the latch (22).

Then, when the user presses the disconnect button (not shown), detecting the occurrence of abnormal current caused by a fault on an electric line, or rastically lever (23) is rotated under the action of a solenoid mechanism (not shown), tazmikella latch (22) is rotated to release the connection (15), switched call is in progress, and turn respectale-closing axis (10) in accordance with the effort of stretching tripping spring (21), so that the point of contact of the fixed contactor (3) and movable contactor (5) opens with providing state presented on Figa.

Meanwhile, figure 3 presents a section of a typical drive motor, shown in figure 1. Next will be described an electric motor used in the device winding the connecting springs typical air circuit breaker with reference to the accompanying drawings.

As shown in FIGURE 3, a typical engine (50) includes a shaft (130)mounted to rotate inside the first frame and the second frame (110, 120) on the bearing (135), firmly planted in the first and the second frame (110, 120), made of aluminum, the manifold (140)mounted on the press fit on one side of the shaft (130), the stator winding (170), enabling rotation of the shaft (130), the brush holder (160), inserted in the first frame (110), brush (150)contact manifold (140) by inserting in the brush holder (160) when the elastic support spring (not shown), and insulator (180) of the brush holder, an insulating brush holder (160) from the first frame (110).

However, this design is typical of the engine (50) has the following disadvantages.

First, the wiring connected to the stator winding (170) on one side of the brush holder (160), soldered to connect the brush holder (160) with a stator winding (170). The problem is that soldering is very difficult, and the electric motor (50) cannot be properly powered due to improper p is s, due to faulty work, and the disconnect operation of the air circuit breaker cannot be performed properly.

In addition, the first and the second frame (110, 120) is made of aluminum by casting under pressure, and may cause difficulties when you insert bearing installed in a dense planting in the first and the second frame (110, 120) to ensure a smooth rotation of the shaft (130). Another problem is that the cost of the air circuit breaker is increased, because the insulator (180) of the brush holder, an insulating brush holder (160) from the first frame (110), should be additionally secured to isolation from brush holder (160).

[TECHNICAL SOLUTION]

The present disclosure is provided to resolve the above problems, and the purpose of the disclosure is to provide a motor device of the winding of the spring in the air circuit-breaker, in which the first and second frames are made of plastic with the addition of fiberglass to facilitate a snug fit of the bearing, and the cost of the drive motor is reduced due to the exclusion of the insulator brush holder, which was a necessary part for isolation of brush holder. Another objective is that the brush holder and a hole for insertion of the brush holder in the first frame, which is advised to insert the brush holder, structurally enhanced to provide a convenient and reliable insertion of the brush holder into the hole for insertion of the brush holder in the first frame. Another goal is to reduce labor costs for soldering to connect the stator winding.

In one General aspect, the motor device of the winding of the spring in the air circuit-breaker includes: a first frame, made with a hole for insertion of the bearing and a pair of holes for insertion of the brush; the second frame, made with a hole for insertion of the bearing and a through hole for the shaft, bearings, each of which is inserted into the holes to insert bearings, made in the first and second frames; the shaft can be rotated associated with the first and second frames through the bearings due to the fact that the shaft passes through a through hole for the shaft in the second frame; a stator associated with the shaft; winding the stator of the rotating shaft; a brush holder, which is connected with the winding of the collector through an electric line by inserting hole for insertion of the brush holder; and a brush inserted into the brush holder in position of the elastic support spring to bring it into contact with the reservoir.

The implementation of this aspect may include one or more of the following features.

The first and second frames are made of plastic with the addition of Steklova is the Korean people's army.

The brush holder may have a rectangular cylindrical shape and include a plate that blocks the lower part and placed at the bottom to lock the lower part, which is opened by bending during operation of the bending and fixing of electric lines to attach an electric line to the outer wall by the reflection in the process of clinching operation. The hole for insertion of the brush holder can be made with a focus on the inner side surface and the brush holder can additionally be performed on the outer wall with the first latch, which is fixed focus, and the second latch, which is fixed to the upper edge of the openings for insertion of the brush holder.

The second frame can additionally be performed with the first and second ribs for structural strengthening of the second frame.

[ADVANTAGES]

The advantage of using an electric motor device of the winding of the spring in the air circuit-breaker is that the first and second frames are made of plastic with the addition of fiberglass to facilitate a snug fit of the bearing, and the cost of the drive motor is reduced due to the exclusion of the insulator brush holder, which was a necessary part for insulation, in addition, structurally improved decoders the tel and the hole for mounting the brush holder in the first frame, in which is inserted into the brush holder, to ensure easy and reliable insertion of the brush holder into the hole for insertion of the brush holder in the first frame, which reduces labor costs by soldering for connecting the stator winding.

[DESCRIPTION of DRAWINGS]

Figure 1 presents a General view of a typical air circuit breaker.

On Figa, 2b, and 2C presents schematic views which sequentially illustrated design and operating condition of the actuator shown in figure 1.

Figure 3 presents the typical incision of the motor shown in figure 1.

4 shows the section of the motor device of the winding of the spring in the air circuit-breaker in accordance with an example implementation.

On Figa presents a General view of the first frame, the brush and brush holder of the motor shown in FIGURE 4.

On .5b section a-a in FIGU when the brush holder is inserted.

On Figs presents a General view of the state in which the brush holder shown in Figa, is connected with a brush and an electric line for connecting the stator winding shown in Figa.

Figure 6 presents a General view of the second frame of the motor, shown in figure 4, from different sides.

[PRINCIPLE of OPERATION of the INVENTION]

Examples of implementation nm is the engine of the device of the winding of the spring in the air circuit-breaker in accordance with this new principle will be described in detail with reference to the attached drawings.

4 shows the section of the motor device of the winding of the spring in the air circuit-breaker in accordance with an example implementation, Figa presents a General view of the first frame, the brush and brush holder of the motor, shown in figure 4, on .5b section a-a in FIGU when the brush holder is inserted, Figs presents a General view of the state in which the brush holder shown in Figa, is connected with a brush and an electric line for connecting the stator winding shown in Figa, and figure 6 presents a General view of the second frame of the motor, shown in figure 4, from different sides.

According to FIGURE 4-6 motor (200)used for winding the connecting spring is in the air circuit breaker includes a first frame (210), made with a hole (212) for insertion of the bearing, and a pair of holes (214) for insertion of the brush holders. The second frame (220), is made with a through hole (221) for shaft and hole (222) for insertion of the bearing, is made with the specified location from the first frame (210). The first and the second frame (210, 220) is made of plastic with the addition of fiberglass. The second frame (220) is performed with the first and second ribs (224, 226) for strengthening reinforced.

Bearing (235) installed in each of the holes (212, 222) for installation of the bearing, made in what erway and second frames (210, 220), for dense planting. In one example implementation is achieved, convenience snug bearing (235) due to the fact that the first and the second frame (210, 220) is made of plastic with the addition of fiberglass, while the typical first and second frames are made from aluminium.

In the inner space formed by the first and second frames (210, 220)is a shaft (230), mounted for rotation in first and second frames (210, 220) through a bearing (235) through the through hole (221) in the second frame (220). As shown in figure 1, the shaft (230) is connected to the node of the gearbox (60) for transmission of rotational effort to the secondary gear (70). On the shaft (230) densely planted collector (240). Shaft (230) outwardly out of alignment with the stator winding (270), torque shaft (230) through the formation of a magnetic field under the action of an applied current.

In the hole (213) for insertion of the brush holder, made in the first frame (210), permanently installed brush holder (260), made integral with a brush (see below). As noted above, in one embodiment, the first and the second frame (210, 220) is made of plastic with the addition of fiberglass, so that eliminates the insulator (180, see figure 3) brush holder for brush holder insulation typically required in the prior art.

Further, according to Figo brush holder (260) has the shape of a rectangular computers is piped and provided with a bottom plate (266), blocking the lower part, which is opened by the bending process of bending operation. In other words, the spring (252)connected to the lower part of the brush (250)is inserted into the brush holder (260), supported bent plate (266), blocking the lower part, whereby the brush (250) is inserted into the brush holder in a state of elastic support spring (252). Brush (250) is positioned to contact the collector (240) due to the elastic action of a spring (252).

On the outer wall of the brush holder (260) there is a portion for fixing (268) electric line, to mount an electric line (290) for electrical connection with the stator winding (270) through the reflection in the process of clinching operation. In other words, as shown in Figs, peripheral bare end of the electric line (290) is located on the side surface part for fixing (268) electric line existing on the outer wall of the brush holder (260), and a portion for fixing (268) electric lines bent to provide the pressing of the exposed peripheral end part to fix (268) electric line (290) to the outer wall of the brush holder (260), whereby the electric line (290) conveniently may be still connected to the brush holder (260).

The result can be a reduced amount of soldering to connect the of electric lines and you can also avoid problems caused by poor soldering works.

On the outer wall of the brush holder (260) may be a pair of first elastic latches (262), and on the inner surface of the hole (214) for insertion of the brush holder in the first frame (210) may be performed stop (a) to engage the first latch (262). In addition, on the outer wall of the brush holder (260) may be the second elastic latch. As a result, when the brush holder (260) must be inserted into the hole (214) for insertion of the brush holder in the first frame (210), as shown in Figa and 5b, the second latch (264) engages the top edge (214b) holes (214) for insertion of the brush holder, while the first latch (262) brush holder (260) engages stop (a), made on the inner surface of the hole (214) for insertion of the brush holder, thereby fixing the brush holder (260) in the hole (214) for insertion of the brush holder in the first frame (210). On the other hand, when the brush holder (260) should be extracted from the hole (214) for insertion of the brush holder, the second latch (264) can be pressed to release the engagement state, and brush (250) may be pushed toward the left side in the drawing, so that it was convenient to remove the brush holder (260).

Although the present invention is shown and described only for examples of its implementation, the General principle of izopet the tion is not limited to the foregoing embodiments. Specialists in the art will understand that there are a variety of changes in form and details therein without departure from the essence and scope of the present invention defined in the following claims.

[INDUSTRIAL APPLICABILITY]

The motor device of the winding of the spring in the air circuit-breaker is one in which the first and second frames are made of plastic with the addition of fiberglass to facilitate a snug fit of the bearing, and the cost of the drive motor is reduced due to the exclusion of the insulator brush holder, which was a necessary part for isolation of the brush holder, in addition, a brush holder and a hole for insertion of the brush holder in the first frame, to insert the brush holder, structurally enhanced to provide a convenient and reliable insertion of the brush holder into the hole for insertion of the brush holder in the first frame, which reduces labor costs by soldering for connecting the stator winding.

1. The motor device of the winding of the spring in the air circuit-breaker, characterized in that it contains: first frame is made with a hole for insertion of the bearing and a pair of holes for insertion of the brush; the second frame, made with a hole for insertion of the bearing and a through hole for VA is a; bearings, each of which is inserted into the holes to insert bearings, made in the first and second frames; the shaft can be rotated associated with the first and second frames through the bearings due to the fact that the shaft passes through a through hole for the shaft in the second frame; a header associated with the shaft; a stator winding of the rotating shaft; a brush holder connected to the stator winding via an electric line; and a brush inserted into the brush holder in position of the elastic support spring to bring it into contact with the reservoir, the brush holder has a shape of a rectangular parallelepiped and includes a plate, a blocking the lower part and placed at the bottom to lock the lower part, which is opened by bending during operation of the bending and fixing of electric lines to attach an electric line to the outer wall by the reflection in the process of clinching operation.

2. The electric motor according to claim 1, characterized by the first and second frames are made of plastic with the addition of fiberglass.

3. The electric motor according to claim 1, characterized in that the hole for insertion of the brush holder is additionally performed with emphasis on the inner side surface and the brush holder is additionally performed on the outer wall with the first latch, which is fixed focus, and the second tashelka is, which is fixed the upper edge of the hole for insertion of the brush holder.

4. The electric motor according to claim 1, characterized in that the second frame is performed with the first and second ribs for structural strengthening of the second frame.