CN212751609U

CN212751609U - Position indicator for electric switch device

Info

Publication number: CN212751609U
Application number: CN202022073705.XU
Authority: CN
Inventors: 潘斌华; 李勇; 朱小民
Original assignee: Jiangsu Luokai Mechanical & Electrical Co ltd; Shanghai Liangcheng Electromechanical Technology Co Ltd
Current assignee: Jiangsu Luokai Mechanical & Electrical Co ltd; Shanghai Liangcheng Electromechanical Technology Co Ltd
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-03-19
Anticipated expiration: 2030-09-21

Abstract

The utility model discloses an electric switching device's position indication device, electric switching device include drawer device and circuit breaker body, and the relative position of circuit breaker body and drawer device includes: the separating position, the test position, insert the position that targets in place and connect the clamping position, can not close a floodgate at the separating position circuit breaker body, can close a floodgate at test position circuit breaker body, female the inserting electric connector that inserts completely of the position that targets in place, electric connector do not press from both sides tight female arranging, the circuit breaker can not close a floodgate, female the inserting electric connector that inserts completely of arranging of connecting the clamping position circuit breaker body and electric connector press from both sides tight female arranging, the circuit breaker body can close a floodgate. A position indicating device is mounted on the drawer arrangement, the position indicating device having three stable positions and two transition regions, the three stable positions including: a separation indication location, a trial indication location and a connection indication location, the two transition areas comprising: a split-test transition region and a test-join transition region.

Description

Position indicator for electric switch device

Technical Field

The utility model relates to an electrical apparatus field, more specifically say, relate to the electric switching device of pull-out type structure.

Background

Electrical switchgear generally has a draw-out configuration, and a common electrical switchgear includes: universal circuit breakers, molded case circuit breakers, automatic transfer switches with drawer devices, medium voltage circuit breakers, medium voltage switchgear, and the like. The device with the draw-out structure comprises a body and a drawer device. The body is provided with a bridge-type contact as a body busbar, and the drawer device is provided with a contact bridge for realizing electric connection with the body busbar. The contact bridge on the drawer device is connected with the external wire inlet and outlet end. When the body is pushed into the drawer device, the body busbar is contacted with the contact bridge to form a conductive path, and the body is communicated with an external wire inlet and outlet end. When the body is pulled out of the drawer device, the body busbar is separated from the contact bridge, the conductive path is cut off, and isolation is realized, so that the test or maintenance is facilitated. The body busbar and the contact bridge form an electric connection device of the electrical device with the draw-out structure. In some products, the bridge-type contact is also arranged on the draw-out device and the contact bridge is arranged on the body, but in the configuration, the electric connection device of the electric device with the draw-out structure is still formed by the busbar and the contact bridge, and the basic principle is the same as that of the structure.

The drawbacks of the electrical connection devices used in the prior art are introduced in the patent applications with publication numbers CN111403939A, CN111403938A, and in the patent with publication numbers CN211017487U, CN211045800U, which have been filed by the applicant of the present application, and a new structure of the electrical connection device is proposed. This novel structure's electric connection device will insert the withdrawal process and part with the clamping process, the operation degree of difficulty that reduces, the clamp force that also ensures simultaneously and the area of contact of electricity connection, the electric performance of the electricity connection of effective promotion. The structure of the novel electric connecting device is obviously different from that of the traditional electric connecting device, and an electric switch device using the novel electric connecting device needs to be matched with a driving operation mechanism corresponding to the electric switch device.

Both with conventional arrangements and with new electrical connection arrangements, the relative position of the body when it is advanced into or withdrawn from the drawer arrangement is critical to operation. The relative position of the body and the drawer device determines whether the closing operation can be performed. If the position information is wrong and the switch is closed at an incorrect position, serious circuit faults or accidents can be caused. If the erroneous indication is made at a position where the switch can be closed, the operator will be afraid of closing and the normal operation of the electrical switching apparatus will be affected.

SUMMERY OF THE UTILITY MODEL

According to an embodiment of the utility model, a position indication device of electric switching device is proposed, and electric switching device includes drawer device and circuit breaker body, and the relative position of circuit breaker body and drawer device includes: the separating position, experimental position, insert the position that targets in place and connect the clamping position, female arranging and the electric connector separation of separating position circuit breaker body, the circuit breaker body can not close a floodgate, female arranging and the electric connector separation of testing position circuit breaker body, the circuit breaker body can close a floodgate, female arranging inserting electric connector completely of inserting the position circuit breaker body that targets in place, electric connector does not press from both sides tight female arranging, the circuit breaker can not close a floodgate, female arranging inserting electric connector completely and electric connector presss from both sides tight female arranging at the connection clamping position circuit breaker body, the circuit breaker body can close a floodgate. A position indicating device is mounted on the drawer arrangement, the position indicating device having three stable positions including: a separation indicating position, a test indicating position and a connection indicating position. The circuit breaker body is located at a separation position, and the position indicating device is located at a separation indicating position. The circuit breaker body is located between separation position and experimental position, and the position indication device is in the region between separation instruction position and experimental instruction position. The circuit breaker body is located experimental position, and position indication device is in experimental instruction position. The circuit breaker body is located between the experimental device and the inserted position, and the position indicating device is located in the area between the experimental indicating position and the connection indicating position. The circuit breaker body is located at the insertion in-place position, and the position indicating device is located in the area between the test indicating position and the connection indicating position. The circuit breaker body is located and connects the clamping position, and position indication device is in and connects the instruction position.

In one embodiment, the circuit breaker body is moved from a test position to a connection clamping position, including an insertion process configuration and a position-in-place configuration. The circuit breaker body is located the insertion process form, and the circuit breaker body continues to remove, and female the arranging is deepened electric connection device gradually, and position indication device is in the region between experimental instruction position and the connection instruction position. The circuit breaker body is located the position form that targets in place, and the circuit breaker body no longer removes, and electric connection device carries out the action of pressing from both sides tight female arranging, and position indication device is in the region between experimental instruction position and the connection instruction position. And after the breaker body reaches the insertion position, the breaker body is converted into the position-in-place form from the insertion process form.

In one embodiment, the position indicating device comprises a snap ring and an indicating rod, the snap ring is arranged on a driving mechanism of the electric switch device and moves along with the driving mechanism, the indicating rod is connected with the snap ring, the movement of the snap ring is converted into the rotation of the indicating rod, and the indicating rod indicates three stable positions through the rotation: a separation indicating position, a test indicating position and a connection indicating position.

In one embodiment, the indicator stem includes an indicator member at a rear end, a locking member at a middle portion, and a drive member at a front end.

In one embodiment, the indicating member at the rear end of the indicating rod includes: pointer and sign, the pointer follows the guide bar and rotates, the sign is the arc and distributes, the sign includes three label and the connection region who is located between the label, and three label corresponds three steady state position respectively: separation indicating position, experimental indicating position and connection indicating position, the connection region between the label corresponds two transition regions: a split-test transition region and a test-join transition region.

In one embodiment, the locking feature includes a lock block and a lock assist. Have three locking groove on the locking piece, three locking groove corresponds separation indicating position, experimental indicating position respectively and connects the three steady state position in indicating position, and at this three steady state position, the locking piece will instruct the pole locking. The locking auxiliary member has a projection thereon.

In one embodiment, a snap ring is mounted on and follows a slide plate of the drive mechanism, the snap ring having protruding snap teeth thereon. The snap ring is sleeved on the indicating rod, a driving groove is formed in a driving part of the indicating rod and comprises a plurality of driving surfaces with radial displacement, the snap ring moves along with the sliding plate, and the snap teeth are in contact with different driving surfaces on the driving groove to drive the indicating rod to rotate.

In one embodiment, the driving groove comprises in sequence from back to front: a separation position drive face, a separation-test transition zone drive face, a test position drive face, a test-connection transition zone drive face, and a connection position drive face. Wherein the disengagement position drive faces, the trial position drive faces and the engagement position drive faces are curved surfaces with radial displacement and the disengagement-trial transition zone drive faces and the trial-engagement transition zone drive faces are flat surfaces without radial displacement.

In one embodiment, the length of the drive face of the trial-to-connect transition zone is greater than the length of the drive face of the separation-to-trial transition zone. The trial-and-connect transition zone drive face includes an insert drive face and a clamp drive face with no radial displacement therebetween. The circuit breaker body is: the insertion process state is that the latch is positioned on the insertion driving surface; the position is in a position state, and the latch is positioned on the clamping driving surface; the latch is located in the area of the connection of the insertion drive surface and the clamping drive surface.

In one embodiment, the circuit breaker body is in the disengaged position and the latch on the snap ring is in contact with the disengaged position drive surface on the drive slot. The circuit breaker body moves from the separation position to the test position, and the latch on the snap ring is contacted with the separation-test transition area driving surface on the driving groove. The circuit breaker body is in the experimental position, and the latch on the snap ring contacts with the experimental position driving surface on the drive groove. The circuit breaker body is moved from a testing position to an inserted position with the latch on the snap ring contacting an inserted drive face in the test-to-connect transition zone drive face on the drive slot. When the circuit breaker body is inserted to the in-place position, the latch on the snap ring is in contact with the driving surface of the test-connection transition area on the driving groove, wherein in the insertion process state of the driving mechanism, the latch on the snap ring is in contact with the insertion driving surface in the driving surface of the test-connection transition area on the driving groove, and when the circuit breaker body is in the in-place state, the latch on the snap ring is in contact with the clamping driving surface in the driving surface of the test-connection transition area on the driving groove. When the circuit breaker is at the connection clamping position, the latch on the snap ring is contacted with the connection position driving surface on the driving groove.

The utility model discloses an electric switching device's position indication device cooperates with the electric switching device who uses the electric connection device of new construction, and this electric connection device can dispose big clamp force as required and press from both sides tight body female arranging for electric device's whole contact resistance reduces substantially, especially reduces the consumption by a wide margin in long-term use, practices thrift use cost greatly, and electric device's rated current is higher, and this kind of advantage is then showing more. On the other hand, the reduction of contact resistance for the temperature rise of product reduces, and electrical apparatus generates heat and reduces, need not consider big heat dissipation space, and the size that is strong in reducing the product improves the reliability of long-term use. The electric switch device is provided with a drawer device, a driving mechanism, a locking mechanism and an interlocking mechanism which are matched with the electric switch device, and combined with the characteristics of the electric switch device, the electric switch device has four working positions, namely a separation position, a test position, an insertion in-place position and a connection clamping position, so that the operability and the safety of the electric switch device are ensured. The utility model discloses a position indication device directly obtains position signal from the driver part, can accurate instruction electric switching device's current position. To separation position, experimental position, insert four operating positions of position and connection clamping position that target in place, the utility model discloses a position indication device has matchd three steady state position: a separation indication position, a test indication position and a connection indication position and two transition areas: a split-test transition region and a test-join transition region. Compared with the prior art, the electric switch device of the electric connection device with the new structure has more in-place insertion positions, but is matched with a new position indicating device, so that the original three-position display mode is reserved for a user, and the original use configuration is not required to be changed by a terminal user.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which like reference numerals refer to like features throughout, and in which:

fig. 1a and 1b show a block diagram of an electrical switching device according to an embodiment of the present invention, wherein fig. 1a shows a state that a circuit breaker body has not entered a drawer device, and fig. 1b shows a state that the circuit breaker body has entered the drawer device.

Fig. 2a, 2b, 2c and 2d show a block diagram of a drive mechanism in an electrical switching apparatus according to an embodiment of the invention.

Figure 3 discloses a block diagram of a latching mechanism in an electrical switching apparatus according to an embodiment of the invention.

Fig. 4 illustrates a block diagram of a drawer interlock of an interlock mechanism in an electrical switching apparatus according to an embodiment of the present invention.

Figure 5 discloses an overall structure of an electric switching device according to an embodiment of the invention.

Figure 6 illustrates a side view of an electrical switching apparatus in a disengaged position in accordance with an embodiment of the present invention.

Figures 7a and 7b disclose a construction of a drive mechanism of an electric switching device according to an embodiment of the invention in a disengaged position.

Figure 8 discloses a side view of an electrical switching apparatus in a test position according to an embodiment of the invention.

Figures 9a and 9b disclose a construction of a drive mechanism of an electric switching device according to an embodiment of the invention in a test position.

Figure 10 illustrates a side view of an electrical switching apparatus in a position inserted into position according to an embodiment of the present invention.

Figures 11a and 11b disclose a block diagram of a drive mechanism of an electrical switching apparatus in a plug-in position according to an embodiment of the invention.

Figure 12 illustrates a side view of an electrical switching apparatus in a connection clamping position in accordance with an embodiment of the present invention.

Figures 13a and 13b disclose a block diagram of a drive mechanism of an electrical switching apparatus in a connecting clamping position according to an embodiment of the invention.

Fig. 14a, 14b, 14c and 14d illustrate the mating relationship of the sliding plate and the main shaft in different positions.

Fig. 15a and 15b disclose a configuration of an indication lever in a position indication device of an electric switching device according to an embodiment of the present invention.

Fig. 16 discloses a block diagram of a snap ring in a position indicating device of an electric switching device according to an embodiment of the present invention.

Figures 17a, 17b and 17c disclose schematic views of an indication member of a position indication device of an electrical switching device according to an embodiment of the invention.

Fig. 18a, 18b and 18c disclose schematic views of the operation of the locking member of the position indicating device of the electric switching device according to an embodiment of the present invention.

Detailed Description

The utility model discloses an electric switching device's position indication device. The operating state of the position indicating device is closely related to the operating state of the electric switching device, and therefore, first, the structure and the operating state of the electric switching device will be described in its entirety. Fig. 1a and 1b disclose a block diagram of an electrical switching device according to an embodiment of the invention. The electric switch device includes: a drawer arrangement 101, an electrical connection arrangement 102, a drive mechanism 103, a locking mechanism 104 and an interlocking mechanism. The breaker body 105 enters or exits the drawer arrangement 101. The electrical connection device 102 is mounted on the drawer device 101, the electrical connection device 102 has a clamping mechanism, and the electrical connection device 102 communicates with a busbar 151 of the circuit breaker body 105 and an external circuit. The driving mechanism 103 is installed on the drawer device 101, and the driving mechanism 103 drives the breaker body 105 to move, so that the busbar 151 of the breaker body is in contact with or separated from the electrical connection device 102. The locking mechanism 104 is installed on the drawer device 101, and the locking mechanism 104 drives the clamping mechanism of the electrical connection device 102, so that the electrical connection device 102 clamps or releases the busbar 151 of the circuit breaker body. An interlock mechanism is mounted on the drawer arrangement, the interlock mechanism not being shown in fig. 1a and 1b, as will be shown in subsequent figures. The interlocking mechanism is matched with a tripping rod of the circuit breaker body to allow or prevent the circuit breaker body from being switched on. Compared with the prior art electric switch device, the electric switch device of the present invention uses the electric connection device 102 with different structure, and regarding the specific structure of the electric connection device 102, the applicant of the present invention has already filed the patent applications with publication numbers CN111403939A, CN111403938A, and the patents with publication numbers CN211017487U, CN211045800U, which are cited in the present application, and the above patent applications can be referred to regarding the specific structure of the electric connection device 102, and the present application will not be described repeatedly. Because electric connecting device's structure and working process are different with prior art, it is corresponding with it, the utility model discloses an electric switching device's actuating mechanism, locking mechanism and interlocking device also with make the change to adapt to electric connecting device's structural change. From a general point of view, the electrical switching apparatus of the present invention is the most different from the electrical switching apparatus of the prior art in that: the utility model discloses an electric switching device has four positions: a separation position, a test position, an insertion in-place position and a connection clamping position. And prior art's electric switching device, because the female in-process of inserting electric connecting device of arranging of circuit breaker body, female arranging targets in place and presss from both sides tight synchronous completion, consequently only has three positions: a separation position, a test position and a connection position. In the prior art, the circuit breaker body enters a connection position, and the busbar is inserted into the electrical connection device and clamped simultaneously. And the utility model discloses an among the electric switching device, female row gets into electric connection device and is pressed from both sides tightly separately going on, consequently has two positions under the connected state: inserted into the position and connected to the clamping position. Although the utility model discloses an electric switching device has four positions, nevertheless still need satisfy the basic principle in circuit breaker body and the drawer device connection process, ensure the security through the combined floodgate function of restriction circuit breaker body promptly: actuating mechanism drive circuit breaker body removes, and the relative position of circuit breaker body and drawer device includes:

a separation position, at which the busbar of the breaker body is separated from the electric connection device and the breaker body cannot be switched on;

the test position is that the busbar of the breaker body is separated from the electric connecting device, and the breaker body can be switched on;

the bus bar is inserted into the in-place position, the bus bar of the breaker body is gradually pushed into the electric connection device at the in-place position, at the moment, the bus bar can be contacted with the electric connection device or can not be contacted with the electric connection device, the electric connection device does not clamp the bus bar, and the breaker body cannot be switched on; in the operation process of inserting the bus bar into the in-place position, when the bus bar is gradually pushed into the electric connection device, the resistance of the pushing process can be further reduced by selecting the bus bar not to be in contact with the electric connection device;

and connecting clamping positions, wherein the busbar of the breaker body is contacted with the electric connecting device at the connecting clamping positions, the electric connecting device clamps the busbar, and the breaker body can be switched on.

The structures of the driving mechanism, the locking mechanism and the interlocking mechanism in the electric switch device of the present invention are described below.

Fig. 2a, 2b, 2c and 2d show a block diagram of a drive mechanism in an electrical switching apparatus according to an embodiment of the invention. Wherein fig. 2a discloses the structure of the slide plate, fig. 2b the structure of the spindle, fig. 2c the structure of the carrier plate and fig. 2d the structure of the assembled drive mechanism. In one embodiment, the drive mechanism comprises: a drive shaft 201, a slide plate 202, a spindle 203 and a pallet 204. One end of the driving shaft 201 is connected to a handle (not shown), and the driving shaft 201 is rotated by rotating the handle. The slide plate 202 is mounted on a drive shaft 201, and rotation of the drive shaft 201 is translated into translation of the slide plate 202. The driving shaft 210 is rotated by shaking the handle to drive the sliding plate 202 to translate, and the sliding plate 202 moves towards the inner side or the outer side of the drawer device 101 to drive the breaker body 105 to enter or exit the drawer device 101. The connection of the drive shaft to the slide plate is a conventional handle rocker structure, which is common in the art and will not be described in detail herein. In addition, for clarity and uniformity of description, the following definitions are made for the directions in the present invention: the direction in which the drawer device is separated from the breaker body is the "outer side", and the direction in which the drawer device is close to the breaker body is the "inner side". The inward movement means movement toward the inside of the drawer device, the outward movement means movement toward the opening of the drawer device, the inward end means one end close to the inside, and the outward end means one end close to the outside. A main shaft 203 is mounted on the drawer arrangement 101, the main shaft 203 being rotatable and cooperating with the sliding plate 202. The slide plate 202 is moved to the separation position, the trial position, the insertion-in-place position, and the connection clamping position, and the main shaft 203 is rotated to the separation angle, the trial angle, the insertion-in-place angle, and the connection clamping angle, respectively. The tray 204 is mounted on the drawer device 101, and the tray 204 can rotate. The breaker body 105 is mounted on a pallet 204, and the pallet 204 is engaged with the main shaft 203. The main shaft 203 is rotated to a separation angle, a test angle, an insertion in-place angle, and a connection clamping angle, the pallet 204 is correspondingly rotated to the separation angle, the test angle, the insertion in-place angle, and the connection clamping angle, and the breaker body 105 is brought to the separation position, the test position, the insertion in-place position, and the connection clamping position.

As shown in fig. 2a, 2b and 2d, the sliding plate 202 has a first driving groove 221, a second driving groove 222, an unlocking groove 223 and an interlocking groove 224. The main shaft 203 has a first arm 231 and a second arm 232 mounted thereon. The first suspension arm 231 has a bifurcated first driving lever 233 and an interlocking lever 234, and the second suspension arm 232 has a bifurcated second driving lever 235 and an unlocking lever 236. As shown, the first driving groove 221 and the interlocking groove 224 are aligned along a straight line, and the first driving groove 221 and the interlocking groove 224 form driving coupling with the first driving lever 233 and the interlocking lever 234 on the first arm. The opening angle of the first driving lever 233 and the interlocking lever 234 from the first cantilever 231 matches the interval of the first driving groove 221 and the interlocking groove 224. In operation, the first drive bar 233 engages the first drive slot 221 and the interlock lever 234 engages the interlock slot 224. Second drive slot 222 and unlock slot 223 are also aligned along a line and second drive slot 222 and unlock slot 223 form a drive coupling with second drive rod 235 and unlock rod 236 on the second arm. The angle of the opening of the second actuator arm 235 and the release lever 236 from the second arm 232 matches the spacing of the second actuator slot 222 and the release slot 223. In operation, the second drive bar 235 engages the second drive slot 222 and the release bar 236 engages the release slot 223. In the illustrated embodiment, the slide plate 202 further has a guide slot 225 therein, the guide slot 225 being guided when the slide plate is moved, the slide plate 202 moving along the guide slot 225.

As shown in fig. 2b, 2c and 2d, transmission gears 237 are mounted at both ends of the main shaft 203. The bottom of the supporting plate 204 is circular and has a transmission gear 241, the transmission gear 241 engages with the transmission gear 237, and the main shaft 203 rotates to drive the supporting plate 204 to rotate. Since the main shaft 203 and the supporting plate 204 are driven by the gear engagement, the rotation directions of the main shaft 203 and the supporting plate 204 are opposite. Referring to fig. 2c, the inner sidewall of the pallet 204 extends to the top to form an interlock plate 242, the inner end of the top of the pallet forms a driving groove 243, the outer end of the top of the pallet forms a connecting surface 244, and the top of the outer sidewall of the pallet is convex to form an exit driving portion 245.

Figure 3 discloses a block diagram of a latching mechanism in an electrical switching apparatus according to an embodiment of the invention. Referring to fig. 3, the locking mechanism includes: locking gear 301, locking drive shaft 302 and locking rack 303. The lock gear 301 is installed on the drawer device, and the lock gear 301 can be rotated. A lock drive shaft 302 connects the lock gear 301 with the clamping mechanism of the electrical connection device 102. In the illustrated embodiment, the lock transmission shaft 302 is coaxial with the lock gear 301, and the lock transmission shaft 302 and the lock gear 301 rotate in synchronization. The locking gear 301 rotates, the locking transmission shaft 302 rotates along with the locking gear 301, the locking transmission shaft 302 is connected to a clamping mechanism of the electric connection device, and the locking transmission shaft 302 drives the clamping mechanism to clamp or loosen a busbar of the circuit breaker body. The structure of the clamping mechanism of the electrical connection device to clamp or release the breaker bar is described in patent applications and patents such as CN111403939A, CN111403938A, CN211017487U, CN 211045800U. A locking rack 303 is formed on the sliding plate 202, and the locking rack 303 extends from the inner end of the sliding plate 202 toward the outer side. The sliding plate moves towards the inner side, the locking rack 303 is contacted and meshed with the locking gear 301 to drive the locking gear to rotate in the clamping direction, and the locking transmission shaft 302 drives the clamping mechanism to clamp the busbar of the breaker body. The sliding plate moves outwards to drive the locking gear 301 to rotate in the loosening direction, and the locking transmission shaft 302 drives the clamping mechanism to loosen the busbar of the breaker body. The sliding plate 202 continues to move outward, and since the position of the locking gear 301 is fixed, after the sliding plate 202 moves outward a sufficient distance, the locking rack 303 is disengaged from the locking gear 301, the locking gear 301 does not rotate any more, and the clamping mechanism of the electrical connection device does not operate any more. In one embodiment, the locking rack and the locking gear can also be configured to be engaged all the time, and correspondingly, the electrical connection device has a clamping stroke large enough to meet the requirement that the electrical connection device idles when the busbar is not inserted into the electrical connection device in the separation position and the test position. Specifically, after the sliding plate 202 is moved to the outside and outside to a proper position, the locking rack 303 and the locking gear 301 may still be in the contact engagement state, in this embodiment, the clamping stroke of the electrical connection device 102 needs to be large enough, and during the movement of the sliding plate at the separation position and the test position, the electrical connection device 102 is clamped in an idle manner but still has a sufficient space distance, so that the circuit breaker body busbar 151 is not clamped in the process of entering the electrical connection device 102. The advantage of this embodiment is that the locking rack 303 and the locking gear 301 are kept engaged so that the whole system is always in a coupled state, and the re-engagement due to the assembly clearance between the parts is avoided. Such an embodiment has a more stable operation performance.

The interlocking mechanism includes: drawer interlock 401, drawer push rod 402, and interlock plate 242. Fig. 4 illustrates a block diagram of a drawer interlock of an interlock mechanism in an electrical switching apparatus according to an embodiment of the present invention. The drawer interlock 401 is installed on the drawer device such that the drawer interlock 401 is installed near the outside of the drawer device 101. Referring to fig. 4, the outer and inner ends of the drawer interlock 401 form protruding interlocking

portions

411 and 412, respectively, and the middle of the drawer interlock forms a recessed release portion 413. Referring to fig. 5, the drawer push rod 402 can be seen, and fig. 5 shows an overall structure of an electric switch device according to an embodiment of the present invention. The drawer push rod 402 is installed on the drawer device, the drawer push rod 402 is located inside the drawer interlocking member 401, and the middle portion of the drawer push rod 402 is rotatably connected to the drawer device through a rotating shaft. At the top of the drawer push rod is a horizontal interlock lever 421 and at the bottom of the drawer push rod is a slanted trigger lever 422, the drawer push rod having an interlock position and a release position. In the locking position, the locking lever 421 is pushed down downward, and in the release position, the locking lever 421 is lifted upward, and the drawer push rod has a push rod spring (not shown), and the drawer push rod is rotated toward the release position by the spring force of the push rod spring. Interlocking plate 242 is formed by extending the inner sidewall of pallet 204 to the top, and interlocking plate 242 is shown with reference to fig. 2 c.

Figure 5 discloses an overall structure of an electric switching device according to an embodiment of the invention. Fig. 5 shows the drawer arrangement and the circuit breaker body removed to more clearly show the structure of the electrical connection device 102, the actuating mechanism, the locking mechanism and the interlocking mechanism. Due to the angle, the locking gear and the locking drive shaft in the locking mechanism are not shown in fig. 5, but the locking rack at the inner end of the sliding plate is clearly visible. The assembled drive shaft 201, slide plate 202, spindle 203 and pallet 204 are visible in fig. 5. In the embodiment shown in fig. 5, the drive mechanism further comprises a side sled 205, the side sled 205 having an entry pin 251 and an exit pin 252, the circuit breaker body being mounted on the side sled 205. The entry pin 251 and exit pin 252 of the side slide 205 cooperate with the tray 204 to drive the circuit breaker body into and out of the drawer arrangement. In fig. 5, the positions of the drawer interlocking part 401 and the drawer pushing rod 402 are shown, the drawer interlocking part 401 and the drawer pushing rod 402 are matched with a tripping rod 501 on the breaker body, and the tripping rod 501 determines whether the breaker body can be switched on. The trip bar 501 is locked, the circuit breaker body cannot be closed, the trip bar 501 is released, and the circuit breaker body can be closed.

The states of the breaker body and the drawer device in four relative positions will be described below. In the process that the breaker body enters the drawer device, the breaker body sequentially passes through a separation position, a test position, an insertion in-place position and a connection clamping position.

First is the disengaged position. The requirement at the separation position is that the busbar of the circuit breaker body is separated from the electrical connection device and the circuit breaker body cannot be closed. Figure 6 illustrates a side view of an electrical switching apparatus in a disengaged position in accordance with an embodiment of the present invention. Figures 7a and 7b disclose a construction of a drive mechanism of an electric switching device according to an embodiment of the invention in a disengaged position. As shown in fig. 7a and 7b, in the disengaged position, the main shaft 203 is at the disengaged angle, the first driving lever 233 is located in the first driving groove 221, and the second driving lever 235 is located in the second driving groove 222. The unlocking lever 236 and the unlocking groove 223 are not separated from each other, and the interlocking lever 234 and the interlocking groove 224 are also not separated from each other. With reference to fig. 6, 7a and 7b, in the disengaged position, the spindle 203 is at a disengagement angle and the pallet 204 is also at the disengagement angle. The entry pin 251 of the side slide 205 is located in the drive recess 243 of the pallet 204. The circuit breaker body placed on the side slide is located at the separated position. In the disengaged position, the interlocking portion 411 of the outer end of the drawer interlock 401 presses and locks the trip lever 501 so that the circuit breaker body cannot be closed. In the disengaged position, the locking gear is disengaged from the locking rack, so that the locking mechanism does not act. As previously described, in the case of an electrical connection device with a sufficiently large clamping travel, it is also possible in some embodiments to arrange the locking rack and the locking gear in a constantly engaged manner.

Then the test site. The requirement at the test position is that the busbar of the circuit breaker body is separated from the electric connection device, but the circuit breaker body can be switched on. The test position is mainly used for testing the operation function of the electric switch device on the breaker body and testing the switching-on and switching-off operations, so that the breaker body is required to be capable of switching-on and switching-off operations at the test position. However, the test position is only a test for the operation function of the breaker body, and the breaker body is not connected to the main circuit, so that the busbar of the breaker body is still separated from the electrical connection device. Figure 8 discloses a side view of an electrical switching apparatus in a test position according to an embodiment of the invention. Figures 9a and 9b disclose a construction of a drive mechanism of an electric switching device according to an embodiment of the invention in a test position. As shown in fig. 9a and 9b, in the process of moving from the separated position to the test position, the sliding plate 202 moves toward the inner side of the drawer device along the guide groove 225 by the driving shaft 201, the outer side end of the first driving groove 221 pushes the first driving lever 233, and the outer side end of the second driving groove 222 pushes the second driving lever 235. Because the first suspension arm 231 and the second suspension arm 232 are fixed on the main shaft, the first driving rod and the second driving rod move under the pushing of the first driving groove and the second driving groove, so as to drive the first suspension arm and the second suspension arm to move, and drive the main shaft 203 to rotate, so that the main shaft 203 rotates to a test angle from a separation angle. In the process, the unlocking rod and the unlocking groove do not act, and the interlocking rod and the interlocking groove do not act. Referring to fig. 8, 9a and 9b, when the spindle 203 is moved from the separation position to the test position, the carrier 204 engaged with the spindle through the transmission gear 237 is also rotated from the separation angle to the test angle. It should be noted that, since the pallet 204 is engaged with the spindle 203 through a gear, the rotation directions of the pallet and the spindle are opposite, and when the spindle rotates clockwise, the pallet rotates counterclockwise. When the main shaft rotates anticlockwise, the supporting plate rotates along the pointer. The outer end of the driving recess 243 of the pallet pushes the entering shaft pin 251 of the side sliding plate 205. The pallet rotates from the separation angle to the test angle, and the breaker body is driven to move from the separation position to the test position through the side sliding plate 205. In the process of moving from the disconnecting position to the testing position, the breaker body moves inward, and the trip lever 501 also moves inward and enters the recessed release 413 in the middle of the drawer interlock 401. The release portion 413 is recessed inward, so that the trip lever 501 is released, and the circuit breaker body can perform closing operation to meet the requirement of a test position. In the test position, the locking gear and the locking rack are still disengaged, so that the locking mechanism does not act. As previously described, in the case of an electrical connection device with a sufficiently large clamping travel, it is also possible in some embodiments to arrange the locking rack and the locking gear in a constantly engaged manner.

Followed by insertion into position. The requirement of the position inserted in place is that the busbar of the breaker body is in contact with the electric connecting device, the electric connecting device does not clamp the busbar, and the breaker body cannot be switched on. And when the test position is reached to the insertion in-place position, the busbar of the circuit breaker body enters the area of the electric connection device. However, before the busbar is completely inserted into the electrical connection device and clamped, the main circuit needs to be kept in an open state, and thus the breaker body cannot be closed in the process. Figure 10 illustrates a side view of an electrical switching apparatus in a position inserted into position according to an embodiment of the present invention. Figures 11a and 11b disclose a block diagram of a drive mechanism of an electrical switching apparatus in a plug-in position according to an embodiment of the invention. As shown in fig. 11a and 11b, during the movement from the test position to the inserted position, the slide plate 202 continues to move toward the inside of the drawer device along the guide groove 225 by the driving shaft 201. The outer end of the first driving groove 221 pushes the first driving rod 233 until the first driving rod 233 comes out of the first driving groove 221 (refer to fig. 11 b). The outer end of the second driving groove 222 pushes the second driving rod 235 until the second driving rod 235 exits the second driving groove 222 (refer to fig. 11 b). This rotates spindle 203 to the plunge-into-position angle. The first and second driving levers of the main shaft at the insertion angle have already escaped from the first and second driving grooves. Interlock lever 234 has not yet entered interlock slot 224. However, although the lock release lever 236 enters the lock release groove 223, the lock release groove 223 is a relatively long groove, and thus the lock release lever 236 and the lock release groove 223 do not work at this position. Thus, after reaching the insertion position, the slide plate and the main shaft temporarily do not interact with each other. Referring to fig. 10, 11a and 11b, when the spindle 203 is rotated from the trial position to the insertion position, the carrier 204 engaged with the spindle by the transmission gear 237 is also rotated from the trial angle to the insertion position. In this process, the outer end of the driving groove 243 pushes the entrance pin 251 of the side slider 205, and the breaker body is moved from the test position to the insertion position by the side slider 205. When the main shaft and the blade are rotated to the insertion position angle, the side slide and the breaker body reach the insertion position, and the entry pin 251 is disengaged from the driving recess 243 and stays on the connection surface 244 of the blade 204. The connecting surface 244 is a continuous arc surface so that when the entrance pin 251 is located on the connecting surface 244, the connecting pin 251 is not pushed any more by the continued rotation of the blade 204, i.e., the blade 204 continues to rotate and the positions of the side slide and the circuit breaker body do not move. In the process of moving from the trial position to the insertion position, the breaker body moves inward, the trip lever 501 comes out of the release portion 413 of the drawer interlock 401, and is pressed and locked again by the interlock portion 412 at the inner end of the drawer interlock, so that the breaker body cannot be closed. The circuit breaker body continues to move inwardly and the interlock plate 242 on the tray 204 rotates with the tray and contacts the trigger lever 422 of the drawer push rod 402. Under the action of the interlocking plate 242, the drawer push rod 402 is rotated from the release position to the interlocking position against the spring force of the push rod spring, and the interlocking rod 421 of the drawer push rod 402 is pressed downward. After the trip lever 501 moves inward following the breaker body and is separated from the drawer interlock 401, the trip lever 501 continues to be pressed and locked by the interlock lever 421 of the drawer push rod 402, and the breaker body remains in a state where it cannot be closed.

During the process of moving from the test position to the insertion position, the locking mechanism has two realization modes: in the first mode, in the process of moving from the test position to the insertion in-place position, the sliding plate 202 and the circuit breaker body move inwards, the busbar of the circuit breaker body gradually enters the electric connection device 102, the locking rack 303 is meshed with the locking gear 301, and along with the movement of the sliding plate, the locking rack synchronously drives the locking gear to rotate in the clamping direction. In the first mode, the locking rack 303 is long and extends a long distance from the inner end of the sliding plate, and after the sliding plate passes through the test position, the locking rack starts to be engaged with the locking gear, so that the action of the busbar of the circuit breaker entering the electrical connection device and the action of the electrical connection device clamping the busbar are performed synchronously, but the electrical connection device does not contact the busbar. In the second mode, the sliding plate and the breaker body move inwards when the test position is moved to the insertion position, the busbar of the breaker body gradually enters the electric connection device, and the locking rack and the locking gear still keep being separated. In the second mode, the locking rack 303 is shorter and extends a shorter distance from the inner end of the sliding plate, the locking rack and the locking gear are always separated before the sliding plate reaches the insertion position, and the action of the busbar of the circuit breaker body entering the electrical connection device and the action of the electrical connection device clamping the busbar are separately performed. As previously described, in the case of an electrical connection device with a sufficiently large clamping travel, it is also possible in some embodiments to arrange the locking rack and the locking gear in a constantly engaged manner.

And finally the connection clamping position. The requirement of the connection clamping position is that a busbar of the breaker body is in contact with an electric connecting device, the electric connecting device clamps the busbar, and the breaker body can be switched on. The connection clamping position is a normal use position, the busbar of the circuit breaker body is fully contacted with the electric connecting device and clamped, and the circuit breaker body is connected into the main loop and works normally, so that the circuit breaker body can be switched on at the connection clamping position. Figure 12 illustrates a side view of an electrical switching apparatus in a connection clamping position in accordance with an embodiment of the present invention. Figures 13a and 13b disclose a block diagram of a drive mechanism of an electrical switching apparatus in a connecting clamping position according to an embodiment of the invention. As shown in fig. 13a and 13b, moving from the inserted position to the coupling clamping position, the sliding plate 202 continues to move toward the inside of the drawer device along the guide groove 225 by the driving shaft 201. At this time, the unlocking bar 236 is located in the unlocking slot 223, and since the unlocking slot 223 is a relatively long slot, before the outer end of the unlocking slot 223 contacts the unlocking bar 236, there is no interaction between the sliding plate 202 and the main shaft 203, and the main function of the sliding plate moving inwards is to enable the locking rack 303 arranged at the inner end of the sliding plate to drive the locking gear to rotate, so that the electric connection device clamps the busbar of the circuit breaker body. After locking in place, the slide plate 202 is moved to the connection clamping position, at which time the outer ends of the unlocking slots 223 contact and push the unlocking levers 236 to rotate the main shaft 203 to the connection clamping angle. Meanwhile, when the spindle is rotated to the connection clamping angle, the interlocking lever 234 enters the interlocking groove 224, but the interlocking lever 234 does not interact with the interlocking groove 224. The interlocking rod 234 enters the interlocking slot 224 so that the circuit breaker body can be locked again from closing by using the interlocking rod 234 and the interlocking slot 224 when the circuit breaker body exits. Referring to fig. 12, 13a and 13b, after moving from the insertion position to the connection clamping position, the main shaft 203 is rotated from the insertion position angle to the connection clamping angle, and the carrier plate 204 engaged with the main shaft through the transmission gear 237 is also rotated from the insertion position angle to the connection clamping angle. In this process, the entrance pin 251 of the side sled 205 slides on the attachment face 244 of the blade 204, there is no interaction between the blade 204 and the entrance pin 251, and thus neither the side sled nor the circuit breaker body position moves. During movement from the inserted position to the connection clamping position, the pallet 204 rotates from the inserted position angle to the connection clamping angle, and although no longer interacting with the side slide, the interlock plate 242 rotates with the pallet 204 and disengages from the trigger lever 422 of the drawer push rod 402. At this time, the drawer push rod 402 is rotated again from the interlocking position to the release position by the push rod spring, the interlocking rod 421 of the drawer push rod 402 releases the trip lever 501, and the breaker body can be closed. In one embodiment, the plate 204 can continue to rotate a release allowance angle after the clamping angle is engaged to ensure that the interlock plate 242 can also disengage from the trigger lever 422 of the drawer push rod 402 under part dimensional or assembly tolerances. In one embodiment, the blade continues to rotate by a release margin angle of about 3 degrees.

With the locking mechanism, whichever of the aforementioned modes (the locking rack being long or the locking rack being short) is used, the locking rack engages with the locking gear during movement from the inserted-in position to the attachment clamping position. In the process, the breaker body is not moved, the busbar of the breaker body completely enters the electric connection device, the sliding plate 202 continues to move towards the inner side, the locking rack 303 is meshed with the locking gear to drive the locking gear to continue to rotate in the clamping direction, and the clamping mechanism clamps the busbar of the breaker body.

Fig. 14a, 14b, 14c and 14d illustrate the mating relationship of the sliding plate and the main shaft in different positions. The mating of the first drive slot 221, the second drive slot 222, the unlatching slot 223, and the interlock slot 224 on the slide plate 202 with the first arm 231 of the main shaft, the first drive lever 233 on the second arm 232, the interlock lever 234, the second drive lever 235, and the interlock lever 236 during advancement of the circuit breaker body is further illustrated. In the disengaged position, shown with reference to fig. 14a, the spindle is at the disengaged angle, the first drive lever is in the first drive slot (the first drive lever and the first drive slot are obscured in fig. 14a due to the angular relationship), the second drive lever 235 is in the second drive slot 222, the unlatching lever 236 is disengaged from the unlatching slot 223 and is not actuated, and the interlock lever 234 is disengaged from the interlock slot 224 and is not actuated. Moving from the disengaged position to the testing position, the slide plate 202 is moved towards the inside of the drawer arrangement, as shown with reference to fig. 14b, the direction indicated by the arrow in fig. 14a, 14b, 14c and 14d being the direction of movement of the slide plate 202. The outboard end of the first drive slot pushes the first drive lever (the first drive lever and the first drive slot are hidden in fig. 14b due to the angular relationship), and the outboard end of the second drive slot 222 pushes the second drive lever 235, so that the spindle rotates to the test angle, the unlock lever 236 does not act on the unlock slot 223, and the interlock lever 234 does not act on the interlock slot 224. Moving from the testing position to the inserted position, referring to fig. 14c, the slide plate 202 continues to move toward the inside of the drawer arrangement, the outside end of the first drive slot pushes the first drive rod until the first drive rod exits the first drive slot (which is obscured in fig. 14c due to the angular relationship between the first drive rod and the first drive slot), and the outside end of the second drive slot 222 pushes the second drive rod 235 until the second drive rod exits the second drive slot. So that the main shaft is rotated to the insertion position angle. At this time, the unlocking lever 236 enters the unlocking groove 223, but the unlocking groove 223 is a relatively long groove, so the unlocking lever 236 does not act on the unlocking groove 223, and the interlocking lever 234 does not yet enter the interlocking groove 224, so the interlocking lever 234 does not act on the interlocking groove 224. Moving from the inserted position to the connection clamping position, as shown with reference to fig. 14d, the sliding plate 202 continues to move toward the inside of the drawer device, the outside end of the unlocking slot 223 contacts the unlocking lever 236 and pushes the unlocking lever 236 so that the main shaft rotates to the connection clamping angle. When the spindle is rotated to the connection clamping angle, the interlock rod 234 enters the interlock slot 224 but the interlock rod 234 does not interact with the interlock slot 224. The interlocking bar 234 enters the interlocking slot 224 so that the inner end of the interlocking slot 224 can act on the interlocking bar 234 when exiting, so that the trip bar of the circuit breaker body is locked from closing.

The process of withdrawing the breaker body from the drawer device is just opposite to the process, and the breaker body sequentially passes through a connecting clamping position, an inserting in-place position, a testing position and a separating position.

In the connection clamping position, reference is made to fig. 12, 13a and 13 b. Spindle 203 is at the connection clamp angle, interlock lever 234 is in interlock slot 224, unlock lever 236 is in unlock slot 223, the first drive lever is not active with the first drive slot, and the second drive lever is not active with the second drive slot. In the connection clamping position, the spindle 203 is at the connection clamping angle, the pallet 204 is also at the connection clamping angle, the entry pin 251 of the side slide 205 is on the connection surface 244 of the pallet 204, and the exit pin 252 of the side slide 205 is not in contact with the pallet 204. In the connection clamping position, the interlocking plate 242 is separated from the trigger lever 422 of the drawer push rod 402, the drawer push rod 402 is located at the release position under the action of the push rod spring, the interlocking lever 421 is lifted upwards, the trip lever 501 is released, and the breaker body can be closed. In one embodiment, there is a release margin angle so that during ejection the pallet 204 is first rotated back through the release margin angle and back to the connection clamping angle. In one embodiment, the blade release margin angle is about 3 degrees.

From the connection clamping position to the insertion position, refer to fig. 10, 11a and 11 b. The slide plate 202 is moved toward the outside of the drawer apparatus along the guide groove 225 by the driving shaft 201, and the inner end of the interlock groove 224 pushes the interlock lever 234 until the interlock lever 234 is released from the interlock groove 224, so that the main shaft 203 is rotated to the insertion-in-place angle. Before the spindle is rotated to the insertion position angle, the unlocking lever 236 is only located in the unlocking groove 223 but the unlocking lever 236 does not act on the unlocking groove 223. The first driving rod does not act on the first driving groove, and the second driving rod does not act on the second driving groove. When the spindle 203 is rotated from the attachment clamping angle to the insertion position angle by moving from the attachment clamping position to the insertion position, the blade 204 engaged with the spindle by the transmission gear 237 is also rotated from the attachment clamping angle to the insertion position angle. The entry pin 251 slides on the connection surface 244 of the blade 204, the exit pin 252 has not yet contacted the blade 204, the blade 204 does not interact with the entry pin 251 and the exit pin 252, and neither the side sled 205 nor the circuit breaker body moves. When the side sliding plate and the breaker body do not move although moving from the connection clamping position to the insertion position, the interlocking plate 242 rotates along with the supporting plate 204 and contacts with the trigger bar 422 of the drawer push rod 402, the drawer push rod 402 rotates from the release position to the interlocking position against the spring force of the push rod spring under the action of the interlocking plate 242, the interlocking bar 421 of the drawer push rod 402 presses and locks the trip bar 501, and the breaker body cannot be closed. The connecting and clamping position is moved to the inserting position, the side sliding plate and the breaker body are not moved, the sliding plate moves outwards, the locking rack 303 is meshed with the locking gear, and the locking rack 303 drives the locking gear to rotate in the loosening direction, so that the clamping mechanism loosens the busbar of the breaker body. In the mode using the short locking rack (corresponding to the second mode), when the short locking rack reaches the insertion position, the locking rack is separated from the locking gear, and the action that the electric connection device loosens the busbar and the busbar of the circuit breaker body exits from the electric connection device is separately performed. In the mode of using a longer locking rack (corresponding to the first mode), when the locking rack reaches the insertion position, the locking rack and the locking gear are still engaged but are not separated, but no contact force exists between the electric connecting device and the busbar, and the loosening of the electric connecting device and the action of withdrawing the busbar of the circuit breaker body from the electric connecting device are synchronously performed. As previously described, in the case of an electrical connection device with a sufficiently large clamping travel, it is also possible in some embodiments to arrange the locking rack and the locking gear in a constantly engaged manner. If in a form of constant engagement, the locking rack and the locking gear do not disengage.

From the inserted position to the trial position, reference is made to fig. 8, 9a and 9 b. The sliding plate 202 moves toward the outside of the drawer device along the guide groove 225 by the driving shaft 201, and the inside end of the unlocking groove 223 pushes the unlocking lever 236, so that the main shaft 203 rotates from the insertion-in-place angle to the test angle. In this process, the first driving lever 233 enters the first driving groove 221, and the second driving lever 235 enters the second driving groove 222. The inside end of the unlocking groove 223 continuously pushes the unlocking lever 236 until the unlocking lever 236 is disengaged from the unlocking groove 233, then the inside end of the first driving groove 221 continuously pushes the first driving lever 233, and the inside end of the second driving groove 222 continuously pushes the second driving lever 235, so that the main shaft 203 continuously rotates until the test angle is reached. From the insertion position to the trial position, the spindle 203 is rotated from the insertion position angle to the trial angle, and the blade 204 engaged with the spindle by the transmission gear 237 is also rotated from the insertion position angle to the trial angle. The withdrawing driving part 245 of the pallet 204 contacts and pushes the withdrawing shaft pin 252, so that the side sliding plate 205 drives the breaker body to move outward, and simultaneously the entering shaft pin 251 enters the driving groove 243 from the connecting surface of the pallet. The supporting plate 204 continues to rotate, the withdrawing shaft pin 252 is separated from the withdrawing driving portion 245 of the supporting plate, and then the side sliding plate 205 drives the circuit breaker body to continue moving outwards to the testing position by pushing the side end of the driving groove 243 of the supporting plate to enter the shaft pin 251. In another embodiment, the withdrawing shaft pin 252 may be always pushed by the withdrawing driving part 245 to the test position, and the entering shaft pin 251 does not participate in the withdrawing process. In the process from the insertion position to the test position, the breaker body moves outward, the trip lever 501 is separated from the interlocking lever 421 of the drawer push rod 402 but is continuously pressed and locked by the interlocking portion 413 of the inner end of the drawer interlocking member 401, and the breaker body cannot be closed. The breaker body moves to the test position, the trip bar 501 enters the recessed release portion 413 in the middle of the drawer interlock 401, the trip bar 501 is released, and the breaker body can be closed. From inserting the position to the experimental position in place, sliding plate and circuit breaker body move to the outside, and the female arranging of circuit breaker body is progressively withdrawed from electric connection device. Under the mode that uses longer locking rack (corresponding to aforementioned first mode), locking rack and locking gear still interlock, drive locking gear and continue to rotate according to the direction of relaxing, and clamping mechanism continues to relax, and sliding plate and circuit breaker body move to experimental position to the outside, and female arranging and the electric connector separation of circuit breaker body, locking rack and locking gear break away from. In the mode using the short locking rack (corresponding to the aforementioned second mode), the locking rack and the locking gear are already separated at the insertion in-place position, and from the insertion in-place position to the test position, the sliding plate and the circuit breaker body move outward, and the busbar of the circuit breaker body gradually exits from the electrical connection device. As previously described, in the case of an electrical connection device with a sufficiently large clamping travel, it is also possible in some embodiments to arrange the locking rack and the locking gear in a constantly engaged manner. If in a form of constant engagement, the locking rack and the locking gear do not disengage.

From the test position to the detached position, reference is made to fig. 6, 7a and 7 b. The sliding plate 202 moves toward the outside of the drawer device along the guide groove 225 by the driving shaft 201, the inner side end of the first driving groove 221 pushes the first driving lever 233, the inner side end of the second driving groove 222 pushes the second driving lever 235, so that the main shaft rotates to a separation angle, the first driving lever 233 is held in the first driving groove 221, and the second driving lever 235 is held in the second driving groove 222, ready for the next entering process. From the test position to the separation position, the main shaft rotates from the test angle to the separation angle, the supporting plate 204 meshed with the main shaft through the transmission gear 237 is also driven to rotate from the test angle to the separation angle, and the inner end of the driving groove 243 pushes the shaft pin 251, so that the side sliding plate 205 and the breaker body move to the separation position to the outer side. In another embodiment, the withdrawing shaft pin 252 may be always pushed by the withdrawing driving part 245 to the separating position, and the entering shaft pin 251 does not participate in the withdrawing process. From the test position to the separated position, the breaker body moves outward, the trip lever 501 comes out of the release portion 413 of the drawer interlock 401, and is locked by the interlock portion 411 at the outer end of the drawer interlock, so that the breaker body cannot be closed. From the test position to the separation position, the locking gear is separated from the locking rack, and the locking mechanism does not act. As previously described, in the case of an electrical connection device with a sufficiently large clamping travel, it is also possible in some embodiments to arrange the locking rack and the locking gear in a constantly engaged manner. If in a form of constant engagement, the locking rack and the locking gear do not disengage.

Above introduced electric switching device's structure and operating condition, made clear the utility model provides an electric switching device includes drawer device and circuit breaker body, and the relative position of circuit breaker body and drawer device includes: a separation position, a test position, an insertion in-place position and a connection clamping position. The busbar of the breaker body is separated from the electric connecting device at the separation position, and the breaker body cannot be switched on. At the test position, the busbar of the breaker body is separated from the electric connecting device, and the breaker body can be switched on. The busbar inserted into the position where the breaker body is in place is completely inserted into the electric connecting device, the electric connecting device does not clamp the busbar, and the breaker cannot be switched on. The busbar of the circuit breaker body at the connecting and clamping position is completely inserted into the electric connecting device, the electric connecting device clamps the busbar, and the circuit breaker body can be switched on. The transition from the test position to the connection clamping position actually involves two different working processes. The method comprises an insertion process form and a position in-place form: in the insertion process form, the breaker body still moves relative to the drawer device, and the busbar is partially inserted into the electric connection device in the process of gradually inserting the busbar into the electric connection device. In the position-to-position state, the busbar is completely inserted into the electric connection device, the circuit breaker body does not move relative to the drawer device, and the subsequent displacement of the sliding plate does not drive the circuit breaker body to move, but drives the electric connection device to perform the action of clamping the busbar. The electric connecting device does not complete the clamping action on the busbar in the insertion process shape and the position in-place shape, and the breaker cannot be switched on. The busbar connected with the circuit breaker body at the clamping position is contacted with the electric connecting device, the electric connecting device clamps the busbar, and the circuit breaker body can be switched on.

And the position indicating device needs to accurately indicate the relative position of the breaker body and the drawer device. In one embodiment, the position indicating device is mounted on the drawer arrangement, the position indicating device having three stable positions and two transition regions, the three stable positions including: a separation indication location, a trial indication location and a connection indication location, the two transition areas comprising: a split-test transition region and a test-join transition region. The corresponding relation between the four relative positions of the breaker body and the drawer device and the three steady-state positions and the two transition areas of the position indicating device is as follows:

the circuit breaker body is at a separation position, and the position indicating device is at a separation indicating position;

the breaker body is positioned between a separation position and a test position, and the position indicating device is positioned in a separation-test transition region;

the circuit breaker body is at a test position, and the position indicating device is at a test indicating position;

the circuit breaker body is positioned between the experimental device and the insertion in-place position, and the position indicating device is positioned in a test-connection transition area;

the circuit breaker body and the drawer device are positioned at the insertion in-place position, and the position indicating device is positioned in a test-connection transition area; for the two configurations from the test position into the connection clamping position, the correspondence is as follows: the circuit breaker body and the drawer device are positioned in an insertion process form of an in-place insertion position, the circuit breaker body continues to move, the bus bar continues to be inserted into the electric connection device, and the position indicating device is positioned in a test-connection transition region; the circuit breaker body and the drawer device are in a position in-place state inserted into the in-place position, the circuit breaker body does not move any more, the electric connecting device executes the action of clamping the busbar, and the position indicating device is located in a test-connection transition region;

the circuit breaker body and the drawer device are located at a connecting and clamping position, and the position indicating device is located at a connecting and indicating position.

In one embodiment, the position indicating device includes a snap ring and an indicator stem. The snap ring is installed on electric switching device's actuating mechanism and is followed actuating mechanism and removed, and the pilot lever is connected with the snap ring, and the removal of snap ring turns into the rotation of pilot lever, and the pilot lever instructs three steady state position through rotating: a separation indication position, a trial indication position and a connection indication position, and two transition regions: a split-test transition region and a test-join transition region.

Fig. 16 discloses a block diagram of a snap ring in a position indicating device of an electric switching device according to an embodiment of the present invention. In one embodiment, the snap ring 601 is mounted on the slide plate 202 of the drive mechanism and follows the slide plate 202, and as previously described, the slide plate 202 has four positions: the separation position, the test position, the insertion in-place position and the connection clamping position correspond to the relative positions of the breaker body and the drawer device. The snap ring 601 follows the slide plate 202 and also moves through these four positions. Referring to fig. 16, the snap ring 601 has a protruding snap tooth 602, and the snap tooth 602 is located at the inner circle of the snap ring 601.

Fig. 15a and 15b disclose a configuration of an indication lever in a position indication device of an electric switching device according to an embodiment of the present invention. Referring to fig. 15a and 15b, the indicating lever 701 includes an indicating member at a rear end, a locking member at a middle portion, and a driving member at a front end.

The indicating member located at the rear end of the indicating rod 701 includes: a pointer 702 and an identification 703. The pointer 702 is fixed on the indicating rod 701 and rotates along with the indicating rod 701, and the marks 703 are distributed around the pointer 702 in an arc shape. Figures 17a, 17b and 17c disclose schematic views of an indication member of a position indication device of an electrical switching device according to an embodiment of the invention. As shown, indicia 703 includes three tags and a linking area located between the tags. Three tags correspond to three steady-state positions: the "separation" corresponds to a separation indication position, the "test" corresponds to a test indication position, and the "connection" corresponds to a connection indication position. The connection area between the tags corresponds to two transition areas: the blank areas between "split" and "test" correspond to split-test transition areas, and the blank areas between "test" and "connection" correspond to test-connection transition areas. Fig. 17a, 17b and 17c show different indication states, respectively, in fig. 17a the needle pointing to the label "detach", in fig. 17b the needle pointing to the label "test", and in fig. 17c the needle pointing to the label "connect".

The locking member located at the middle of the indication lever 701 includes a locking block 704 and a locking auxiliary 705. Fig. 18a, 18b and 18c disclose schematic views of the operation of the locking member of the position indicating device of the electric switching device according to an embodiment of the present invention. As shown, the locking block 704 has three locking grooves corresponding to three stable positions, namely, a separation indication position, a test indication position and a connection indication position. With the aid of the projections on the locking plate 801 of the position lock, when the indicating lever 701 is rotated to three stable positions, the disengagement indicating position, the trial indicating position and the connection indicating position, the projections on the locking plate 801 are exactly aligned with the positions of the grooves on the locking block 704. The lug is snapped into the groove so that the indication rod 701 can not rotate any more, and the indication rod is locked by the locking block. The locking aid 705 has a protrusion thereon. Referring to fig. 18a, 18b and 18c, the protrusions on the lock aid 705 act to assist the locking of the locking plate 801. Below the indicator lever 701 is a detent lever 802, and when the detent lever 802 is raised, the latch plate 801 is blocked and the tab on the latch plate 801 does not enter the slot on the latch block 704. When the detent lever 802 is depressed, the detent lever 802 no longer blocks the latch plate 801 and the tab on the latch plate 801 can enter the slot on the latch block 704. The protrusion on the locking aid 705 functions to depress the detent lever 802. When the indicating lever 701 is rotated so that the projection on the lock aid 705 is directed downward, the detent lever 802 is depressed, and when the indicating lever 701 is rotated so that the recessed position on the lock aid 705 is directed downward, the detent lever 802 is raised.

The connection between the indicator rod 701 and the snap ring 601 is such that the snap ring fits over the indicator rod, and this connection can be seen with reference to the state shown in fig. 5, 9a, 11a and 13 a. Referring to fig. 15a and 15b, a driving groove is formed on a driving part located at the front end of the indication lever 701. The drive slot is a curved slot and there is a displacement in the radial direction of the indicator rod. The driving groove comprises a plurality of driving surfaces with radial displacement, and the driving surfaces jointly form the driving groove. The position of the indicating rod 701 is not moved, and the snap ring 601 moves along with the sliding plate 202, the snap teeth 602 on the snap ring will contact with different driving surfaces on the driving groove along with the movement of the sliding plate, and because radial displacement exists between the driving surfaces, the movement can be converted into rotation through the matching of the snap teeth and the driving surfaces, and the indicating rod 701 is driven to rotate. In the illustrated embodiment, the driving groove comprises, in order from the rear to the front: disengagement position drive face 706, disengagement-trial transition zone drive face 707, trial position drive face 708, trial-connection transition zone drive face 709, and connection position drive face 710. Disengagement position drive surface 706, trial position drive surface 708, and engagement position drive surface 710 are curved surfaces that are radially displaced and when latch 602 contacts disengagement position drive surface 706, trial position drive surface 708, or engagement position drive surface 710, relative radial movement occurs, which is manifested as rotation of indicator stem 701 as indicator stem 701 being restricted from lateral movement by the slider plate. While the separation-trial transition zone drive face 707 and trial-connection transition zone drive face 709 are planar with no radial displacement. When the latch 602 is in contact with the separation-trial transition zone drive surface 707 and the trial-connection transition zone drive surface 709, no relative radial movement occurs, so the indicator stem 701 does not rotate. In the illustrated embodiment, the length of trial-and-connect transition zone drive face 709 is substantially greater than the length of separation-and-trial transition zone drive face 707. In considering two modalities of insertion into place: the trial-and-connect transition zone drive face may be considered to comprise two drive faces based on the insertion process configuration and the position-in-place configuration: the insert drive surface and the clamp drive surface are free of radial displacement therebetween. The insertion drive face and the clamping drive face may be integrally connected as a continuous plane, as in the form shown in fig. 15a and 15 b. The insertion drive face and the clamping drive face may be two separate faces, separated but not radially displaced, which are located on the same axial line. The circuit breaker body is: the insertion process state is that the latch is positioned on the insertion driving surface; the position is in a position state, and the latch is positioned on the clamping driving surface; the latch is located in the area of the connection of the insertion drive surface and the clamping drive surface. The correspondence between the contact relationship of the latch with each of the drive faces on the drive channel and the position of the slide plate is as follows:

the circuit breaker body is at a separation position, and the latch on the snap ring is in contact with a separation position driving surface on the driving groove;

the circuit breaker body moves from a separation position to a test position, and the latch on the snap ring is contacted with a separation-test transition area driving surface on the driving groove;

the circuit breaker body is at a test position, and the latch on the snap ring is contacted with a test position driving surface on the driving groove;

the circuit breaker body moves from a test position to an insertion in-place position, and the clamping teeth on the clamping ring are in contact with an insertion driving surface in a test-connection transition area driving surface on the driving groove;

when the circuit breaker body is inserted to the in-place position, the latch on the snap ring is contacted with the test-connection transition area driving surface on the driving groove, wherein in the insertion process form of the circuit breaker body, the latch on the snap ring is contacted with the insertion driving surface in the test-connection transition area driving surface on the driving groove, and when the circuit breaker body is in the in-place form, the latch on the snap ring is contacted with the clamping driving surface in the test-connection transition area driving surface on the driving groove;

the circuit breaker body is in the connection clamping position, and the latch on the snap ring is in contact with the connection position driving surface on the driving groove.

The position indicating device obtains position signals directly from the sliding plate through the matching of the clamping ring and the indicating rod. The sliding plate is a basic component for determining the relative position of the breaker body and the drawer device, so the position signal from the sliding plate is most accurate and effective. The position indicating device avoids a complex multi-channel transfer mechanism, eliminates the position deviation caused by the size deviation and the assembly error of parts in the transfer process of the multi-channel transfer mechanism, and ensures that the position indication is more accurate.

The utility model discloses an electric switching device's closing lock cooperates with the electric switching device who uses the electric connecting device of new construction, and this electric connecting device can dispose big clamp force as required and press from both sides tight body female arranging for electric device's whole contact resistance reduces substantially, especially reduces the consumption by a wide margin in long-term use, practices thrift use cost greatly, and electric device's rated current is higher, and this kind of advantage is then showing more. On the other hand, the reduction of contact resistance for the temperature rise of product reduces, and electrical apparatus generates heat and reduces, need not consider big heat dissipation space, and the size that is strong in reducing the product improves the reliability of long-term use. The electric switch device is provided with a drawer device, a driving mechanism, a locking mechanism and an interlocking mechanism which are matched with the electric switch device, and combined with the characteristics of the electric switch device, the electric switch device has four working positions, namely a separation position, a test position, an insertion in-place position and a connection clamping position, so that the operability and the safety of the electric switch device are ensured. The utility model discloses a position indication device directly obtains position signal from the driver part, can accurate instruction electric switching device's current position. To separation position, experimental position, insert four operating positions of position and connection clamping position that target in place, the utility model discloses a position indication device has matchd three steady state position: a separation indication position, a test indication position and a connection indication position and two transition areas: a split-test transition region and a test-join transition region.

The above-described embodiments are provided to enable persons skilled in the art to make or use the invention, and many modifications and variations may be made to the above-described embodiments by persons skilled in the art without departing from the inventive concept of the present invention, so that the scope of the invention is not limited by the above-described embodiments, but should be accorded the widest scope consistent with the innovative features set forth in the claims.

Claims

1. A position indicating device for an electrical switching apparatus comprising a drawer arrangement and a circuit breaker body, wherein the relative position of the circuit breaker body to the drawer arrangement comprises: the circuit breaker comprises a separation position, a test position, an insertion in-place position and a connection clamping position, wherein a bus bar of a circuit breaker body at the separation position is separated from an electric connecting device, the circuit breaker body cannot be switched on, the bus bar of the circuit breaker body at the test position is separated from the electric connecting device, the circuit breaker body can be switched on, the bus bar of the circuit breaker body at the insertion in-place position is completely inserted into the electric connecting device, the electric connecting device does not clamp the bus bar, the circuit breaker cannot be switched on, the bus bar of the circuit breaker body at the connection clamping position is completely inserted into the electric connecting device;

the position indicating device is mounted on the drawer arrangement, the position indicating device having three stable positions including: a separation indicating position, a test indicating position and a connection indicating position;

the circuit breaker body is located at a separation position, and the position indicating device is located at a separation indicating position;

the circuit breaker body is located between a separation position and a test position, and the position indicating device is located in a region between the separation indicating position and the test indicating position;

the circuit breaker body is located at a test position, and the position indicating device is located at a test indicating position;

the circuit breaker body is positioned between the experimental device and the insertion in-place position, and the position indicating device is positioned in a region between the experimental indicating position and the connection indicating position;

the circuit breaker body is located at an insertion in-place position, and the position indicating device is located in a region between a test indicating position and a connection indicating position;

the circuit breaker body is located and connects the clamping position, and position indication device is in and connects the instruction position.

2. Position indicating device of an electric switching device according to claim 1,

the circuit breaker body is connected with a clamping position from a test position, and comprises an insertion process form and a position in-place form;

the circuit breaker body is in an insertion process shape, the circuit breaker body continues to move, the bus bar gradually penetrates into the electric connection device, and the position indicating device is located in a region between the test indicating position and the connection indicating position;

the circuit breaker body is in a position in-place state, the circuit breaker body does not move any more, the electric connecting device executes the action of clamping the busbar, and the position indicating device is positioned in the area between the test indicating position and the connection indicating position;

and after the breaker body reaches the insertion position, the breaker body is converted into the position-in-place form from the insertion process form.

3. A position indicating device for an electrical switching apparatus according to claim 1, wherein the position indicating device comprises a snap ring and an indicating rod, the snap ring being mounted on and movable with the actuating mechanism of the electrical switching apparatus, the indicating rod being connected to the snap ring, the movement of the snap ring being converted into a rotation of the indicating rod, the indicating rod indicating three stable positions by rotation: a separation indicating position, a test indicating position and a connection indicating position.

4. A position indicating device for an electric switching device according to claim 3, characterized in that the indicating rod comprises an indicating member at the rear end, a locking member in the middle and an actuating member at the front end.

5. A position indicating device of an electric switching device as claimed in claim 4, characterized in that the indicating member at the rear end of the indicating rod comprises: pointer and sign, the pointer follows the guide bar and rotates, the sign is the arc and distributes, the sign includes three label and the connection region who is located between the label, and three label corresponds three steady state position respectively: separation indicating position, experimental indicating position and connection indicating position, the connection region between the label corresponds two transition regions: a split-test transition region and a test-join transition region.

6. A position indicating device of an electric switching device as claimed in claim 4, characterized in that said locking member comprises a locking piece and a locking aid;

the locking block is provided with three locking grooves which respectively correspond to three stable positions, namely a separation indication position, a test indication position and a connection indication position, and the locking block locks the indication rod at the three stable positions;

the locking auxiliary member has a projection thereon.

7. The position indicating device of an electric switching device as claimed in claim 4, wherein the snap ring is mounted on and moves along the sliding plate of the actuating mechanism, and the snap ring has a protruding snap tooth;

the snap ring is sleeved on the indicating rod, a driving groove is formed in a driving part of the indicating rod and comprises a plurality of driving surfaces with radial displacement, the snap ring moves along with the sliding plate, and the snap tooth is in contact with different driving surfaces on the driving groove to drive the indicating rod to rotate.

8. A position indicating device of an electric switching device according to claim 7, characterized in that said driving groove comprises, in order from the rear to the front: a disengagement position drive face, a disengagement-testing transition zone drive face, a testing position drive face, a testing-connection transition zone drive face, and a connection position drive face;

wherein the disengagement position drive face, the trial position drive face and the engagement position drive face are curved surfaces with radial displacement, and the disengagement-trial transition zone drive face and the trial-engagement transition zone drive face are flat surfaces without radial displacement.

9. Position indicating device of an electric switching device according to claim 8,

the length of the drive face of the test-connect transition zone is greater than the length of the drive face of the separation-test transition zone;

the trial-and-connect transition zone drive face includes an insertion drive face and a clamping drive face, there being no radial displacement between the insertion drive face and the clamping drive face;

the circuit breaker body is:

the insertion process state is that the latch is positioned on the insertion driving surface;

the position is in a position state, and the latch is positioned on the clamping driving surface;

the latch is located in the area of the connection of the insertion drive surface and the clamping drive surface.

10. Position indicating device of an electric switching device according to claim 8,

when the circuit breaker body is inserted to the in-place position, the latch on the snap ring is contacted with the test-connection transition area driving surface on the driving groove, wherein in the insertion process state of the driving mechanism, the latch on the snap ring is contacted with the insertion driving surface in the test-connection transition area driving surface on the driving groove, and when the circuit breaker body is in the in-place state, the latch on the snap ring is contacted with the clamping driving surface in the test-connection transition area driving surface on the driving groove;

when the circuit breaker is at the connection clamping position, the latch on the snap ring is contacted with the connection position driving surface on the driving groove.