Position indicating device for electric switching device

Abstract

The present invention discloses a position indicating device for an electric switch device, the electric switch device comprises a drawer device and a circuit breaker body, the relative positions of the circuit breaker body and the drawer device comprise: a separation position, a test position, an insertion position and a connection clamping position, the circuit breaker body cannot be closed at the separation position, the circuit breaker body can be closed at the test position, the busbar is fully inserted into the electric connection device at the insertion position, the electric connection device does not clamp the busbar, the circuit breaker cannot be closed at the connection clamping position, the busbar of the circuit breaker body is fully inserted into the electric connection device and the electric connection device clamps the busbar, the circuit breaker body can be closed at the connection clamping position. The position indicating device is installed on the drawer device, the position indicating device has three stable positions and two transition areas, the three stable positions comprise: a separation indicating position, a test indicating position and a connection indicating position, the two transition areas comprise: a separation-test transition area and a test-connection transition area.

Description

Technical Field

[0001] The present invention relates to the field of electrical devices, and more particularly to an electric switch device with a drawable structure. Background Art

[0002] The electric switch device usually has a withdrawable structure. Commonly used electric switch devices include: universal circuit breakers, molded case circuit breakers, automatic transfer switches with drawer devices, medium voltage circuit breakers, medium voltage switch cabinets, etc. The device with a withdrawable structure includes a body and a drawer device. A bridge-type contact is used as the body busbar on the body, and a contact bridge is provided on the drawer device for electrical connection with the body busbar. The contact bridge on the drawer device is connected to the external input and output terminals. When the body is pushed into the drawer device, the body busbar contacts the contact bridge to form a conductive path, and the body is connected to the external input and output terminals. 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 achieved for testing or maintenance. The body busbar and the contact bridge constitute the electrical connection device of the withdrawable structure electrical device. In some products, the bridge-type contact is also set on the withdrawable device and the contact bridge is set on the body, but in this configuration, the busbar and the contact bridge still constitute the electrical connection device of the withdrawable structure electrical device, which is the same as the aforementioned structure in basic principle.

[0003] In the patent applications with publication numbers CN111403939A and CN111403938A, and patents with announcement numbers CN211017487U and CN211045800U, which have been submitted by the applicant of the present application, the defects of the electrical connection devices used in the prior art are introduced, and an electrical connection device with a new structure is proposed. The electrical connection device with the new structure separates the insertion and withdrawal process from the clamping process, which reduces the difficulty of operation, while also ensuring the clamping force and the contact area of ​​the electrical connection, effectively improving the electrical performance of the electrical connection. The structure of the new electrical connection device is significantly different from that of the traditional electrical connection device, and the electrical switch device using the new electrical connection device needs to be equipped with a corresponding drive operating mechanism.

[0004] Whether it is an electric switch device with a traditional structure or an electric switch device with a new type of electrical connection device, the relative position of the two is crucial for operation when the main body is pushed in or out of the drawer device. The relative position of the main 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, it will cause serious circuit failure or accidents. If the wrong indication is in the position where the switch can be closed, the operator will not dare to close the switch, which will affect the normal operation of the electric switch device. Summary of the invention

[0005] According to one embodiment of the present invention, a position indicating device of an electric switch device is proposed. The electric switch device includes a drawer device and a circuit breaker body. The relative positions of the circuit breaker body and the drawer device include: a separation position, a test position, an insertion position and a connection clamping position. In the separation position, the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body cannot be closed. In the test position, the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body can be closed. In the insertion position, the busbar of the circuit breaker body is fully inserted into the electrical connection device, the electrical connection device does not clamp the busbar, and the circuit breaker cannot be closed. In the connection clamping position, the busbar of the circuit breaker body is fully inserted into the electrical connection device and the electrical connection device clamps the busbar, and the circuit breaker body can be closed. The position indicating device is installed on the drawer device, and the position indicating device has three stable positions, which include: a separation indicating position, a test indicating position and a connection indicating position. Among them, the circuit breaker body is located in the separation position, and the position indicating device is in the separation indicating position. The circuit breaker body is located between the separation position and the test position, and the position indicating device is located in the area between the separation indicating position and the test indicating position. The circuit breaker body is located in the test position, and the position indicating device is located in the test indicating 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 test indicating position and the connection indicating position. The circuit breaker body is located in the inserted 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 in the connection clamping position, and the position indicating device is located in the connection indicating position.

[0006] In one embodiment, the circuit breaker body moves from the test position to the connection clamping position, including an insertion process state and a position in place state. When the circuit breaker body is in the insertion process state, the circuit breaker body continues to move, the busbar gradually penetrates into the electrical connection device, and the position indicating device is in the area between the test indication position and the connection indication position. When the circuit breaker body is in the position in place state, the circuit breaker body no longer moves, the electrical connection device performs the action of clamping the busbar, and the position indicating device is in the area between the test indication position and the connection indication position. After the circuit breaker body reaches the insertion in place position, it switches from the insertion process state to the position in place state.

[0007] In one embodiment, the position indicating device includes a retaining ring and an indicating rod. The retaining ring is installed on the driving mechanism of the electric switching device and moves with the driving mechanism. The indicating rod is connected to the retaining ring. The movement of the retaining ring is converted into the rotation of the indicating rod. The indicating rod indicates three steady-state positions through rotation: a separation indicating position, a test indicating position and a connection indicating position.

[0008] In one embodiment, the indicating rod includes an indicating component located at a rear end, a locking component located in a middle portion, and a driving component located at a front end.

[0009] In one embodiment, the indicating component located at the rear end of the indicating rod includes: a pointer and a mark, the pointer rotates with the indicating rod, the mark is distributed in an arc shape, the mark includes three labels and a connecting area between the labels, the three labels correspond to three stable positions: a separation indicating position, a test indicating position and a connection indicating position, and the connecting area between the labels corresponds to two transition areas: a separation-test transition area and a test-connection transition area.

[0010] In one embodiment, the locking component includes a locking block and a locking auxiliary piece. The locking block has three locking grooves, which correspond to three stable positions of a separation indication position, a test indication position and a connection indication position, respectively. In the three stable positions, the locking block locks the indicator rod. The locking auxiliary piece has a protrusion.

[0011] In one embodiment, the snap ring is mounted on the sliding plate of the driving mechanism and moves with the sliding plate, and there are protruding snap teeth on the snap ring. The snap ring is sleeved on the indicator rod, and there is a driving groove on the driving component of the indicator rod, and the driving groove includes a plurality of driving surfaces with radial displacement. The snap ring moves with the sliding plate, and the snap teeth contact different driving surfaces on the driving groove, driving the indicator rod to rotate.

[0012] In one embodiment, the driving groove includes, from back to front, a separation position driving surface, a separation-test transition area driving surface, a test position driving surface, a test-connection transition area driving surface, and a connection position driving surface. The separation position driving surface, the test position driving surface, and the connection position driving surface are curved surfaces with radial displacement, and the separation-test transition area driving surface and the test-connection transition area driving surface are planes without radial displacement.

[0013] In one embodiment, the length of the driving surface of the test-connection transition region is greater than the length of the driving surface of the separation-test transition region. The driving surface of the test-connection transition region includes an insertion driving surface and a clamping driving surface, and there is no radial displacement between the insertion driving surface and the clamping driving surface. The circuit breaker body is in: the insertion process state, the latch teeth are located on the insertion driving surface; the position in place state, the latch teeth are located on the clamping driving surface; the insertion in place position, the latch teeth are located in the connection area between the insertion driving surface and the clamping driving surface.

[0014] In one embodiment, when the circuit breaker body is in the separation position, the snap ring contacts the separation position driving surface on the drive slot. When the circuit breaker body moves from the separation position to the test position, the snap ring contacts the separation-test transition area driving surface on the drive slot. When the circuit breaker body is in the test position, the snap ring contacts the test position driving surface on the drive slot. When the circuit breaker body moves from the test position to the insertion position, the snap ring contacts the insertion driving surface in the test-connection transition area driving surface on the drive slot. When the circuit breaker body is in the insertion position, the snap ring contacts the test-connection transition area driving surface on the drive slot, wherein the drive mechanism is in the insertion process form, the snap ring contacts the insertion driving surface in the test-connection transition area driving surface on the drive slot, and when the circuit breaker body is in the position-in-place form, the snap ring contacts the clamping driving surface in the test-connection transition area driving surface on the drive slot. When the circuit breaker is in the connection clamping position, the snap ring contacts the connection position driving surface on the drive slot.

[0015] The position indicating device of the electric switch device of the present invention cooperates with the electric switch device using the electric connection device of the new structure. The electric connection device can be configured with a large clamping force to clamp the main body busbar as needed, so that the overall contact resistance of the electrical device is greatly reduced, especially in long-term use, the power consumption is greatly reduced, and the use cost is greatly saved. The higher the rated current of the electrical device, the more significant this advantage is. On the other hand, the reduction of contact resistance reduces the temperature rise of the product and the heat generation of the electrical device. There is no need to consider a large heat dissipation space, which is conducive to reducing the size of the product and improving the reliability of long-term use. The electric switch device provides a drawer device, a drive mechanism, a locking mechanism and an interlocking mechanism that are matched with the electric connection device. Combined with the characteristics of the electric connection device, the electric switch device has four working positions: a separation position, a test position, an insertion position and a connection clamping position, which ensures the operability and safety of the electric switch device. The position indicating device of the present invention directly obtains the position signal from the drive component and can accurately indicate the current position of the electric switch device. For the four working positions of separation position, test position, insertion position and connection clamping position, the position indicating device of the present invention matches three steady-state positions: separation indicating position, test indicating position and connection indicating position and two transition areas: separation-test transition area and test-connection transition area. The electric switch device of the new structure of the electric connection device has an additional insertion position compared with the prior art, but with the new position indicating device, the original three-position display mode is retained for the user, so that the end user does not have to change the original usage configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always represent the same features, wherein:

[0017] Figure 1a and Figure 1b The structure diagram of an electric switch device according to an embodiment of the present invention is disclosed, wherein Figure 1a Reveals the state that the circuit breaker body has not yet entered the drawer device, Figure 1b The state of the circuit breaker body after entering the drawer device is disclosed.

[0018] Figure 2a , Figure 2b , Figure 2c and Figure 2d A structural diagram of a driving mechanism in an electric switch device according to an embodiment of the present invention is disclosed.

[0019] Figure 3 A structural diagram of a locking mechanism in an electric switch device according to an embodiment of the present invention is disclosed.

[0020] Figure 4 A structural diagram of a drawer interlocking member of an interlocking mechanism in an electric switch device according to an embodiment of the present invention is disclosed.

[0021] Figure 5 The overall structural diagram of an electric switch device according to an embodiment of the present invention is disclosed.

[0022] Figure 6 A side structural diagram of an electrical switch device in a disengaged position according to an embodiment of the present invention is disclosed.

[0023] Figure 7a and Figure 7b A structural diagram of a driving mechanism of an electric switch device in a disengaged position according to an embodiment of the present invention is disclosed.

[0024] Figure 8 A side structural diagram of an electric switch device in a test position according to an embodiment of the present invention is disclosed.

[0025] Figure 9a and Figure 9b A structural diagram of a driving mechanism of an electric switch device in a test position according to an embodiment of the present invention is disclosed.

[0026] Fig.10 A side structural view of an electrical switch device in an inserted position according to an embodiment of the present invention is disclosed.

[0027] Fig.11a and Fig.11b A structural diagram of a driving mechanism of an electric switch device according to an embodiment of the present invention is disclosed in an inserted position.

[0028] Fig.12A side structural diagram of an electric switch device in a connection clamping position according to an embodiment of the present invention is disclosed.

[0029] Fig.13a and Fig.13b A structural diagram of a driving mechanism of an electric switch device in a connection clamping position according to an embodiment of the present invention is disclosed.

[0030] Fig.14a , Fig.14b , Fig.14c and Fig.14d The matching relationship between the sliding plate and the main shaft in different positions is revealed.

[0031] Fig.15a and Fig.15b A structural diagram of an indicating rod in a position indicating device of an electric switch device according to an embodiment of the present invention is disclosed.

[0032] Fig.16 A structural diagram of a clamping ring in a position indicating device of an electric switch device according to an embodiment of the present invention is disclosed.

[0033] Fig.17a , Fig.17b and Fig.17c A schematic diagram of an indicating component of a position indicating device of an electric switch device according to an embodiment of the present invention is disclosed.

[0034] Fig.18a , Fig.18b and Fig.18c A schematic diagram of the working principle of a locking component of a position indicating device of an electric switch device according to an embodiment of the present invention is disclosed. DETAILED DESCRIPTION

[0035] The present invention discloses a position indicating device for an electric switch device. The working state of the position indicating device is closely related to the working state of the electric switch device, so the structure and working state of the electric switch device are first described as a whole. Figure 1a and Figure 1bThe structural diagram of an electric switch device according to an embodiment of the present invention is disclosed. The electric switch device includes: a drawer device 101, an electric connection device 102, a driving mechanism 103, a locking mechanism 104 and an interlocking mechanism. The circuit breaker body 105 enters or exits the drawer device 101. The electric connection device 102 is installed on the drawer device 101, and the electric connection device 102 has a clamping mechanism. The electric connection device 102 connects the busbar 151 of the circuit breaker body 105 and the external circuit. The driving mechanism 103 is installed on the drawer device 101, and the driving mechanism 103 drives the circuit breaker body 105 to move, so that the busbar 151 of the circuit breaker body contacts or separates from the electric 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 electric connection device 102, so that the electric connection device 102 clamps or releases the busbar 151 of the circuit breaker body. The interlocking mechanism is installed on the drawer device, and the interlocking mechanism is Figure 1a and Figure 1b It is not shown in the figure, but will be shown in the subsequent drawings. The interlocking mechanism cooperates with the tripping rod of the circuit breaker body to allow or prevent the circuit breaker body from closing. Compared with the electric switch device in the prior art, the electric switch device of the present invention uses an electric connection device 102 with a different structure. Regarding the specific structure of the electric connection device 102, the applicant of this application has submitted patent applications with publication numbers CN111403939A and CN111403938A, and patents with announcement numbers CN211017487U and CN211045800U. The above patent applications and patents are cited in this application. For the specific structure of the electric connection device 102, please refer to the above patent applications, and this application will not repeat the description. Since the structure and working process of the electric connection device are different from those in the prior art, correspondingly, the driving mechanism, locking mechanism and interlocking mechanism of the electric switch device of the present invention are also changed to adapt to the structural changes of the electric connection device. From an overall perspective, the biggest difference between the electric switch device of the present invention and the electric switch device of the prior art is that the electric switch device of the present invention has four positions: a separation position, a test position, an insertion position, and a connection clamping position. In the electric switch device of the prior art, since the busbar of the circuit breaker body is inserted into the electrical connection device, the busbar is put into place and clamped simultaneously, so there are only three positions: a separation position, a test position, and a connection position. In the prior art, the circuit breaker body enters the connection position, the busbar is inserted into the electrical connection device, and is clamped at the same time. In the electric switch device of the present invention, the busbar enters the electrical connection device and is clamped separately, so there are two positions in the connected state: the insertion position and the connection clamping position. Although the electric switch device of the present invention has four positions, it still needs to meet the basic principles in the process of connecting the circuit breaker body and the drawer device, that is, to ensure safety by limiting the closing function of the circuit breaker body: the driving mechanism drives the circuit breaker body to move, and the relative position of the circuit breaker body and the drawer device includes:

[0036] Separation position, in which the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body cannot be closed;

[0037] Test position, in which the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body can be closed;

[0038] Inserted into the in-place position, the busbar of the circuit breaker body is gradually pushed into the electrical connection device at the inserted in-place position, at which time the busbar may or may not contact the electrical connection device, the electrical connection device does not clamp the busbar, and the circuit breaker body cannot be closed; during the operation of the inserted in-place position, when the busbar is gradually pushed into the electrical connection device, the selection of the busbar not contacting the electrical connection device can further reduce the resistance of the pushing process;

[0039] The connection clamping position is where the busbar of the circuit breaker body contacts the electrical connection device, the electrical connection device clamps the busbar, and the circuit breaker body can be closed.

[0040] Figure 1a and Figure 1b The structure diagram of an electric switch device according to an embodiment of the present invention is disclosed, wherein Figure 1a Reveals the state that the circuit breaker body has not yet entered the drawer device, Figure 1b The state of the circuit breaker body after entering the drawer device is disclosed.

[0041] The structures of the driving mechanism, locking mechanism and interlocking mechanism in the electric switch device of the present invention are respectively introduced below.

[0042] Figure 2a , Figure 2b , Figure 2c and Figure 2d The present invention discloses a structural diagram of a driving mechanism in an electric switch device according to an embodiment of the present invention. Figure 2a The structure of the sliding plate is revealed. Figure 2b The structure of the spindle is revealed. Figure 2c The structure of the pallet is revealed. Figure 2dThe structure of the assembled drive mechanism is disclosed. In one embodiment, the drive mechanism includes: a drive shaft 201, a sliding plate 202, a main shaft 203 and a support plate 204. One end of the drive shaft 201 is connected to a handle (the handle is not shown in the figure), and the handle is turned to drive the drive shaft 201 to rotate. The sliding plate 202 is mounted on the drive shaft 201, and the rotation of the drive shaft 201 is converted into the translation of the sliding plate 202. The sliding plate 202 is driven to translate by shaking the handle to drive the drive shaft 210 to rotate, and the sliding plate 202 moves toward the inside or outside of the drawer device 101, driving the circuit breaker body 105 to enter or exit the drawer device 101. The connection method between the drive shaft and the sliding plate is a conventional handle rocker structure, which is commonly used in the art and will not be described in detail here. In addition, for the sake of clarity and uniformity of description, the direction is defined as follows in the present invention: the direction in which the drawer device is away from the circuit breaker body is "outside", and the direction in which the drawer device is close to the circuit breaker body is "inside". Moving inwards means moving toward the inside of the drawer device, moving outwards means moving toward the direction of the drawer device opening, the inner end means the end close to the inner side, and the outer end means the end close to the outer side. The main shaft 203 is installed on the drawer device 101, and the main shaft 203 can rotate and cooperate with the sliding plate 202. The sliding plate 202 moves to the separation position, the test position, the insertion position and the connection clamping position, and the main shaft 203 rotates to the separation angle, the test angle, the insertion position and the connection clamping angle accordingly. The support plate 204 is installed on the drawer device 101, and the support plate 204 can rotate. The circuit breaker body 105 is mounted on the support plate 204, and the support plate 204 cooperates with the main shaft 203. The main shaft 203 rotates to the separation angle, the test angle, the insertion position angle and the connection clamping angle, and the support plate 204 rotates to the separation angle, the test angle, the insertion position angle and the connection clamping angle accordingly, and drives the circuit breaker body 105 to the separation position, the test position, the insertion position and the connection clamping position.

[0043] Combination Figure 2a , Figure 2b and Figure 2dAs shown, the sliding plate 202 is provided with a first driving groove 221, a second driving groove 222, an unlocking groove 223 and an interlocking groove 224. The first cantilever 231 and the second cantilever 232 are installed on the main shaft 203. The first cantilever 231 has a forked first driving rod 233 and a first interlocking rod 234, and the second cantilever 232 has a forked second driving rod 235 and an unlocking rod 236. As shown, the first driving groove 221 and the interlocking groove 224 are arranged along a straight line, and the first driving groove 221 and the interlocking groove 224 form a driving coupling with the first driving rod 233 and the first interlocking rod 234 on the first cantilever. The first driving rod 233 and the first interlocking rod 234 match the interval of the first driving groove 221 and the interlocking groove 224 from the opening angle of the first cantilever 231. When in action, the first driving rod 233 cooperates with the first driving groove 221, and the first interlocking rod 234 cooperates with the interlocking groove 224. The second driving groove 222 and the unlocking groove 223 are also arranged in a straight line, and the second driving groove 222 and the unlocking groove 223 form a driving coupling with the second driving rod 235 and the unlocking rod 236 on the second cantilever. The second driving rod 235 and the unlocking rod 236 match the interval between the second driving groove 222 and the unlocking groove 223 from the opening angle of the second cantilever 232. When in action, the second driving rod 235 cooperates with the second driving groove 222, and the unlocking rod 236 cooperates with the unlocking groove 223. In the illustrated embodiment, the sliding plate 202 is also provided with a guide groove 225, which guides when the sliding plate moves, and the sliding plate 202 moves along the guide groove 225.

[0044] Combination Figure 2b , Figure 2c and Figure 2d As shown, transmission gears 237 are installed at both ends of the main shaft 203. The bottom of the support plate 204 is circular and has transmission teeth 241. The transmission teeth 241 mesh with the transmission gears 237. The rotation of the main shaft 203 drives the support plate 204 to rotate. Since the main shaft 203 and the support plate 204 are driven by the gear meshing, the rotation directions of the main shaft 203 and the support plate 204 are opposite. Figure 2c As shown, the inner wall of the support plate 204 extends toward the top to form an interlocking plate 242, the inner end of the top of the support plate forms a driving groove 243, the outer end of the top of the support plate forms a connecting surface 244, and the top of the outer wall of the support plate is a convex angle to form an exit drive portion 245.

[0045] Figure 3 The structure diagram of the locking mechanism in the electric switch device according to one embodiment of the present invention is disclosed. Figure 3As shown, the locking mechanism includes: a locking gear 301, a locking transmission shaft 302 and a locking rack 303. The locking gear 301 is installed on the drawer device, and the locking gear 301 can rotate. The locking transmission shaft 302 connects the locking gear 301 and the clamping mechanism of the electrical connection device 102. In the illustrated embodiment, the locking transmission shaft 302 is coaxial with the locking gear 301, and the locking transmission shaft 302 and the locking gear 301 rotate synchronously. When the locking gear 301 rotates, the locking transmission shaft 302 rotates with the locking gear 301, and the locking transmission shaft 302 is connected to the clamping mechanism of the electrical connection device, and the locking transmission shaft 302 drives the clamping mechanism to clamp or release the busbar of the circuit breaker body. The structure of the clamping mechanism of the electrical connection device to clamp or release the busbar of the circuit breaker is described in patent applications and patents such as CN111403939A, CN111403938A, CN211017487U, and CN211045800U. The 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 outside. The sliding plate moves inward, and the locking rack 303 contacts and engages with the locking gear 301, driving the locking gear to rotate in the clamping direction, and driving the clamping mechanism to clamp the busbar of the circuit breaker body through the locking transmission shaft 302. The sliding plate moves outward, driving the locking gear 301 to rotate in the release direction, and driving the clamping mechanism to release the busbar of the circuit breaker body through the locking transmission shaft 302. The sliding plate 202 continues to move outward. 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, and the locking gear 301 no longer rotates, and the clamping mechanism of the electrical connection device no longer acts. In one embodiment, the locking rack and the locking gear can also be configured to always be engaged. Correspondingly, the electrical connection device has a sufficiently large clamping stroke to meet the requirement of the electrical connection device idling when the busbar has not been inserted into the electrical connection device in the separation position and the test position. Specifically, after the sliding plate 202 moves outward and into position, the locking rack 303 and the locking gear 301 can still be in a contacting and engaging state. In this embodiment, the clamping stroke of the electrical connection device 102 needs to be large enough. During the movement of the sliding plate in the separation position and the test position, the electrical connection device 102 is idling and clamped, but there is still enough space, so that the busbar 151 of the circuit breaker body is not subjected to the clamping force during 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 remain engaged so that the entire system is always in a coupled state, avoiding the re-engagement caused by the assembly gap between the parts. This embodiment has more stable working performance.

[0046] The interlocking mechanism includes: a drawer interlocking member 401 , a drawer push rod 402 and an interlocking plate 242 . Figure 4The structure diagram of the drawer interlocking member of the interlocking mechanism in the electric switch device according to one embodiment of the present invention is disclosed. The drawer interlocking member 401 is installed on the drawer device, and the installation position of the drawer interlocking member 401 is close to the outer side of the drawer device 101. Figure 4 As shown, the outer end and the inner end of the drawer interlocking member 401 respectively form a protruding first interlocking portion 411 and a second interlocking portion 412, and the middle of the drawer interlocking member forms a recessed release portion 413. Figure 5 , Figure 5 The overall structural diagram of an electric switch device according to an embodiment of the present invention is disclosed. A drawer push rod 402 is installed on the drawer device, and the drawer push rod 402 is located on the inner side of the drawer interlocking member 401. The middle part of the drawer push rod 402 is rotatably connected to the drawer device via a rotating shaft. The top of the drawer push rod is a horizontal second interlocking rod 421, and the bottom of the drawer push rod is an inclined trigger rod 422. The drawer push rod has an interlocking position and a release position. In the interlocking position, the second interlocking rod 421 is pressed downward, and in the release position, the second interlocking rod 421 is lifted upward. The drawer push rod has a push rod spring (not shown in the figure), and the spring force of the push rod spring causes the drawer push rod to rotate toward the release position. The interlocking plate 242 is formed by extending from the inner side wall of the support plate 204 to the top. The interlocking plate 242 can refer to Figure 2c shown.

[0047] Figure 5 The overall structural diagram of an electric switch device according to an embodiment of the present invention is disclosed. Figure 5 The drawer device and the circuit breaker body are removed to more clearly show the structure of the electrical connection device 102, the drive mechanism, the locking mechanism and the interlocking mechanism. Figure 5 The locking gear and locking transmission shaft in the middle locking mechanism are not shown, but the locking rack located at the inner end of the sliding plate is clearly visible. Figure 5 The assembled drive shaft 201, sliding plate 202, main shaft 203 and support plate 204 can be seen in FIG. Figure 5 In the illustrated embodiment, the driving mechanism further includes a side slide 205, on which there are an entry shaft pin 251 and an exit shaft pin 252, and the circuit breaker body is mounted on the side slide 205. The entry shaft pin 251 and the exit shaft pin 252 of the side slide 205 cooperate with the support plate 204 to drive the circuit breaker body to enter or exit the drawer device. Figure 5 The position of the drawer interlock 401 and the drawer push rod 402 are shown in the figure. The drawer interlock 401 and the drawer push rod 402 cooperate with the trip rod 501 on the circuit breaker body. The trip rod 501 determines whether the circuit breaker body can be closed. When the trip rod 501 is locked, the circuit breaker body cannot be closed. When the trip rod 501 is released, the circuit breaker body can be closed.

[0048] The following describes the states of the circuit breaker body and the drawer device in four relative positions. When the circuit breaker body enters the drawer device, it will pass through the separation position, the test position, the insertion position and the connection clamping position in sequence.

[0049] The first is the separation position. The requirement in 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 A side structural diagram of an electrical switch device in a disengaged position according to an embodiment of the present invention is disclosed. Figure 7a and Figure 7b The present invention discloses a structural diagram of a driving mechanism of an electric switch device in a disengaged position according to an embodiment of the present invention. Figure 7a and 7b As shown, in the separation position, the main shaft 203 is at the separation angle, the first driving rod 233 is located in the first driving groove 221, and the second driving rod 235 is located in the second driving groove 222. The unlocking rod 236 and the unlocking groove 223 are separated from each other and do not function, and the first interlocking rod 234 and the interlocking groove 224 are also separated from each other and do not function. Figure 6 , Figure 7a and Figure 7b In the separation position, the main shaft 203 is located at the separation angle, and the support plate 204 is also located at the separation angle. The entry shaft pin 251 of the side slide 205 is located in the driving groove 243 of the support plate 204. The circuit breaker body placed on the side slide is in the separation position. In the separation position, the first interlocking portion 411 at the outer end of the drawer interlock 401 presses and locks the trip rod 501, so that the circuit breaker body cannot be closed. In the separation position, the locking gear is disengaged from the locking rack, so the locking mechanism will not operate. As described above, when the electrical connection device has a sufficiently large clamping stroke, in some embodiments, the locking rack and the locking gear can also be configured to always be in meshing form.

[0050] Then comes the test position. The requirement in the test position is that the busbar of the circuit breaker body is separated from the electrical connection device, but the circuit breaker body can be closed. The test position is mainly to test the operating function of the electrical switch device for the circuit breaker body, and to test the closing and opening operations. Therefore, the circuit breaker body needs to be able to close and open in the test position. However, the test position is only a test of the operating function of the circuit breaker body. The circuit breaker body has not yet been connected to the main circuit, so the busbar of the circuit breaker body is still separated from the electrical connection device. Figure 8 A side structural diagram of an electric switch device in a test position according to an embodiment of the present invention is disclosed. Figure 9a and Figure 9b The present invention discloses a structural diagram of a driving mechanism of an electric switch device in a test position according to an embodiment of the present invention. Figure 9a and 9bAs shown, in the process of moving from the separation position to the test position, the sliding plate 202 moves toward the inner side of the drawer device along the guide groove 225 under the action of the drive shaft 201, and the outer end of the first drive groove 221 pushes the first drive rod 233, and the outer end of the second drive groove 222 pushes the second drive rod 235. Since the first cantilever 231 and the second cantilever 232 are fixed on the main shaft, the first drive rod and the second drive rod move under the push of the first drive groove and the second drive groove, driving the first cantilever and the second cantilever to move, driving the main shaft 203 to rotate, so that the main shaft 203 rotates from the separation angle to the test angle. In this process, the unlocking rod and the unlocking groove do not work, and the interlocking rod and the interlocking groove do not work. Figure 8 , Figure 9a and Figure 9b , moving from the separation position to the test position, the main shaft 203 rotates from the separation angle to the test angle, and the support plate 204 engaged with the main shaft through the transmission gear 237 is also driven to rotate from the separation angle to the test angle. It should be noted that because the support plate 204 and the main shaft 203 are engaged through gears, the rotation directions of the support plate and the main shaft are opposite. When the main shaft rotates clockwise, the support plate rotates counterclockwise. When the main shaft rotates counterclockwise, the support plate rotates clockwise. The outer end of the driving groove 243 of the support plate pushes the entry shaft pin 251 of the side slide 205. The support plate rotates from the separation angle to the test angle, and the circuit breaker body is driven to move from the separation position to the test position through the side slide 205. In the process of moving from the separation position to the test position, the circuit breaker body moves inward, and the trip rod 501 also moves inward and enters the recessed release portion 413 in the middle of the drawer interlock 401. The release portion 413 is recessed inward, so the tripping rod 501 is released, and the circuit breaker body can be closed, meeting the requirements of the test position. In the test position, the locking gear and the locking rack are still disengaged, so the locking mechanism will not work. As described above, in the case where the electrical connection device has a sufficiently large clamping stroke, in some embodiments, the locking rack and the locking gear can also be configured to always be engaged.

[0051] Next is the insertion position. The requirement for the insertion position is that the busbar of the circuit breaker body is in contact with the electrical connection device. The circuit breaker body cannot be closed if the electrical connection device does not clamp the busbar. From the test position to the insertion position, the busbar of the circuit breaker body begins to enter the area of ​​the electrical connection device. However, before the busbar is fully inserted into the electrical connection device and clamped, the main circuit needs to remain disconnected, so the circuit breaker body cannot be closed during this process. Fig.10 A side structural view of an electrical switch device in an inserted position according to an embodiment of the present invention is disclosed. Fig.11a and Fig.11b The present invention discloses a structural diagram of a driving mechanism of an electric switch device according to an embodiment of the present invention in an inserted position. Fig.11aand 11b As shown, in the process of moving from the test position to the inserted position, the sliding plate 202 continues to move toward the inner side of the drawer device along the guide groove 225 under the action of 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 escapes from the first driving groove 221 (refer to Fig.11b ). The outer end of the second driving groove 222 pushes the second driving rod 235 until the second driving rod 235 escapes from the second driving groove 222 (refer to Fig.11b ). This is when the spindle 203 rotates to the insertion position. The first drive rod and the second drive rod of the spindle at the insertion position have been disengaged from the first drive slot and the second drive slot. The first interlocking rod 234 has not yet entered the interlocking slot 224. Although the unlocking rod 236 has entered the unlocking slot 223, the unlocking slot 223 is a relatively long slot, so the unlocking rod 236 and the unlocking slot 223 do not interact at this position. Therefore, after reaching the insertion position, the sliding plate and the spindle do not interact with each other temporarily. Combined Fig.10 , Fig.11a and Fig.11b, moving from the test position to the insertion position, the main shaft 203 rotates from the test angle to the insertion angle, and the support plate 204 engaged with the main shaft through the transmission gear 237 is also driven to rotate from the test angle to the insertion angle. In this process, the outer end of the driving groove 243 pushes the entry axis pin 251 of the side slide 205, and the circuit breaker body is driven to move from the test position to the insertion position through the side slide 205. When the main shaft and the support plate are rotated to the insertion angle, and the side slide and the circuit breaker body also reach the insertion position, the entry axis pin 251 escapes from the driving groove 243 and stays on the connection surface 244 of the support plate 204. The connection surface 244 is a continuous arc surface, so when the entry axis pin 251 is located on the connection surface 244, the continued rotation of the support plate 204 will no longer push the entry axis pin 251, that is, the support plate 204 continues to rotate, and the position of the side slide and the circuit breaker body no longer moves. During the process of moving from the test position to the inserted position, the circuit breaker body moves inward, the tripping rod 501 escapes from the release portion 413 of the drawer interlocking member 401, and is pressed and locked by the second interlocking portion 412 at the inner end of the drawer interlocking member again, so that the circuit breaker body cannot be closed. The circuit breaker body continues to move inward, and the interlocking plate 242 on the support plate 204 rotates with the support plate and contacts the triggering rod 422 of the drawer push rod 402. Under the action of the interlocking plate 242, the drawer push rod 402 overcomes the spring force of the push rod spring and rotates from the release position to the interlocking position, and the second interlocking rod 421 of the drawer push rod 402 presses downward. After the tripping rod 501 moves inward with the circuit breaker body and separates from the drawer interlocking member 401, the tripping rod 501 continues to be pressed down and locked by the second interlocking rod 421 of the drawer push rod 402, and the circuit breaker body still maintains a state where it cannot be closed.

[0052] In the process of moving from the test position to the inserted position, the locking mechanism has two implementation modes: in the first mode, in the process of moving from the test position to the inserted position, the sliding plate 202 and the circuit breaker body move inward, the busbar of the circuit breaker body gradually enters the electrical connection device 102, the locking rack 303 engages with the locking gear 301, and as the sliding plate moves, the locking rack synchronously drives the locking gear to rotate in the clamping direction. In the first mode, the locking rack 303 is relatively long and extends a relatively long distance from the inner end of the sliding plate. After the sliding plate passes the test position, the locking rack begins to engage with the locking gear, and the busbar of the circuit breaker body enters the electrical connection device and the electrical connection device clamps the busbar synchronously, but the electrical connection device does not contact the busbar. In the second mode, when moving from the test position to the inserted position, the sliding plate and the circuit breaker body move inward, the busbar of the circuit breaker body gradually enters the electrical connection device, but the locking rack and the locking gear remain disengaged. In the second mode, the locking rack 303 is shorter and extends a shorter distance from the inner side of the sliding plate. Before the sliding plate reaches the inserted position, the locking rack and the locking gear are always separated, and the busbar of the circuit breaker body enters the electrical connection device and the electrical connection device clamps the busbar separately. As described above, in the case where the electrical connection device has a sufficiently large clamping stroke, in some embodiments, the locking rack and the locking gear can also be configured to always be engaged.

[0053] Finally, there is the connection clamping position. The requirement at the connection clamping position is that the busbar of the circuit breaker body contacts the electrical connection device, the electrical connection device clamps the busbar, and the circuit breaker body can be closed. The connection clamping position is the position of normal use, the busbar of the circuit breaker body is fully in contact with the electrical connection device and is clamped, the circuit breaker body is connected to the main circuit and works normally, so the circuit breaker body must be able to be closed at the connection clamping position. Fig.12 A side structural diagram of an electric switch device in a connection clamping position according to an embodiment of the present invention is disclosed. Fig.13a and Fig.13b The present invention discloses a structural diagram of a driving mechanism of an electric switch device in a connection clamping position according to an embodiment of the present invention. Fig.13a and 13bAs shown, from the inserted position to the connection clamping position, the sliding plate 202 continues to move toward the inner side of the drawer device along the guide groove 225 under the action of the drive shaft 201. At this time, the unlocking rod 236 is located in the unlocking groove 223. Since the unlocking groove 223 is a relatively long groove, there is no interaction between the sliding plate 202 and the main shaft 203 before the outer end of the unlocking groove 223 contacts the unlocking rod 236. At this time, the main function of the sliding plate continuing to move inward is to make the locking rack 303 set at the inner end of the sliding plate drive the locking gear to rotate, so that the electrical connection device clamps the busbar of the circuit breaker body. After being locked in place, the sliding plate 202 moves to the connection clamping position. At this time, the outer end of the unlocking groove 223 contacts and pushes the unlocking rod 236 to rotate the main shaft 203 to the connection clamping angle. At the same time, when the main shaft rotates to the connection clamping angle, the first interlocking rod 234 enters the interlocking groove 224, but the first interlocking rod 234 and the interlocking groove 224 do not interact. The first interlocking rod 234 enters the interlocking slot 224 so that when the circuit breaker body is withdrawn, the first interlocking rod 234 and the interlocking slot 224 can be used to re-lock the circuit breaker body and prevent it from closing. Fig.12 , Fig.13a and Fig.13b After moving from the inserted position to the connection clamping position, the main shaft 203 rotates from the inserted position angle to the connection clamping angle, and the support plate 204 engaged with the main shaft through the transmission gear 237 is also driven to rotate from the inserted position angle to the connection clamping angle. In this process, the entry shaft pin 251 of the side slide plate 205 slides on the connection surface 244 of the support plate 204, and there is no interaction between the support plate 204 and the entry shaft pin 251, so the positions of the side slide plate and the circuit breaker body do not move. In the process of moving from the inserted position to the connection clamping position, the support plate 204 rotates from the inserted position angle to the connection clamping angle. Although it no longer interacts with the side slide plate, the interlocking plate 242 rotates with the support plate 204 and separates from the trigger rod 422 of the drawer push rod 402. At this time, the drawer push rod 402 rotates from the interlocking position to the release position again under the action of the push rod spring, and the second interlocking rod 421 of the drawer push rod 402 releases the tripping rod 501, and the circuit breaker body can be closed. In one embodiment, the support plate 204 can continue to rotate to a release margin angle after reaching the connection clamping angle to ensure that the interlocking plate 242 can also be separated from the trigger rod 422 of the drawer push rod 402 under part size error or assembly error. In one embodiment, the release margin angle of the support plate continuing to rotate is about 3 degrees.

[0054] For the locking mechanism, no matter which of the above modes is used (long locking rack or short locking rack), the locking rack will mesh with the locking gear during the process of moving from the inserted position to the connection clamping position. In this process, the circuit breaker body does not move, the busbar of the circuit breaker body is completely inserted into the electrical connection device, the sliding plate 202 continues to move inward, the locking rack 303 meshes with the locking gear, driving the locking gear to continue to rotate in the clamping direction, and the clamping mechanism clamps the busbar of the circuit breaker body.

[0055] Fig.14a , Fig.14b , Fig.14c and Fig.14d The matching relationship between the sliding plate and the main shaft in different positions is disclosed. The matching process between the first driving groove 221, the second driving groove 222, the unlocking groove 223 and the interlocking groove 224 on the sliding plate 202 and the first cantilever 231 and the first driving rod 233, the first interlocking rod 234, the second driving rod 235 and the unlocking rod 236 on the second cantilever 232 of the main shaft during the advancement of the circuit breaker body is further shown. In the separated position, refer to Fig.14a As shown, the main shaft is at the separation angle, and the first drive rod is located in the first drive groove (due to the angle relationship, the first drive rod and the first drive groove are at Fig.14a The second driving rod 235 is located in the second driving slot 222, the unlocking rod 236 is separated from the unlocking slot 223 and does not function, and the first interlocking rod 234 is separated from the interlocking slot 224 and does not function. Move from the separated position to the test position, refer to Fig.14b As shown, the sliding plate 202 moves toward the inner side of the drawer device, Fig.14a , Fig.14b , Fig.14c and Fig.14d The direction indicated by the arrow in the middle is the moving direction of the sliding plate 202. The outer end of the first driving groove pushes the first driving rod (due to the angle between the first driving rod and the first driving groove) Fig.14b The outer end of the second driving slot 222 pushes the second driving rod 235, so that the main shaft rotates to the test angle, the unlocking rod 236 and the unlocking slot 223 do not work, and the first interlocking rod 234 and the interlocking slot 224 do not work. Move from the test position to the inserted position, refer to Fig.14c As shown, the sliding plate 202 continues to move toward the inner side of the drawer device, and the outer end of the first driving groove pushes the first driving rod until the first driving rod escapes from the first driving groove (due to the angle between the first driving rod and the first driving groove). Fig.14cThe outer end of the second driving slot 222 pushes the second driving rod 235 until the second driving rod escapes from the second driving slot. This causes the main shaft to rotate to the insertion position. At this time, the unlocking rod 236 enters the unlocking slot 223, but the unlocking slot 223 is a relatively long slot, so the unlocking rod 236 and the unlocking slot 223 do not interact. The first interlocking rod 234 has not yet entered the interlocking slot 224, so the first interlocking rod 234 and the interlocking slot 224 do not interact. Move from the insertion position to the connection clamping position, refer to Fig.14d As shown, the sliding plate 202 continues to move toward the inner side of the drawer device, and the outer end of the unlocking groove 223 contacts the unlocking rod 236 and pushes the unlocking rod 236 to rotate the main shaft to the connection clamping angle. When the main shaft rotates to the connection clamping angle, the first interlocking rod 234 enters the interlocking groove 224, but the first interlocking rod 234 and the interlocking groove 224 do not act. The first interlocking rod 234 enters the interlocking groove 224 so that the inner end of the interlocking groove 224 can act on the first interlocking rod 234 when withdrawing, so that the tripping rod of the circuit breaker body is locked and cannot be closed.

[0056] The process of the circuit breaker body withdrawing from the drawer device is exactly the opposite of the above process, and it passes through the connection clamping position, the insertion position, the test position and the separation position in sequence.

[0057] In the connection clamping position, refer to Fig.12 , Fig.13a and Fig.13b The main shaft 203 is located at the connection clamping angle, the first interlocking rod 234 is located in the interlocking groove 224, the unlocking rod 236 is located in the unlocking groove 223, the first driving rod does not interact with the first driving groove, and the second driving rod does not interact with the second driving groove. In the connection clamping position, the main shaft 203 is located at the connection clamping angle, the support plate 204 is also located at the connection clamping angle, the entry axis pin 251 of the side slide plate 205 is located on the connection surface 244 of the support plate 204, and the exit axis pin 252 of the side slide plate 205 does not contact the support plate 204. In the connection clamping position, the interlocking plate 242 is separated from the trigger rod 422 of the drawer push rod 402, and the drawer push rod 402 is located in the release position under the action of the push rod spring, the second interlocking rod 421 is lifted upward, the tripping rod 501 is released, and the circuit breaker body can be closed. In one embodiment, there is a release margin angle, so during the withdrawal process, the support plate 204 first reverses to the release margin angle and returns to the connection clamping angle. In one embodiment, the pallet relief angle is approximately 3 degrees.

[0058] Move from the connection clamping position to the insertion position, refer to Fig.10 , Fig.11a and Fig.11b. Under the action of the drive shaft 201, the sliding plate 202 moves along the guide groove 225 toward the outside of the drawer device, and the inner end of the interlocking groove 224 pushes the first interlocking rod 234 until the first interlocking rod 234 escapes from the interlocking groove 224, so that the main shaft 203 rotates to the insertion angle. Before the main shaft rotates to the insertion angle, the unlocking rod 236 is only located in the unlocking groove 223, but the unlocking rod 236 and the unlocking groove 223 do not interact. The first drive rod and the first drive groove do not interact, and the second drive rod and the second drive groove do not interact. Moving from the connection clamping position to the insertion position, the main shaft 203 rotates from the connection clamping angle to the insertion angle, and the support plate 204 engaged with the main shaft through the transmission gear 237 is also driven to rotate from the connection clamping angle to the insertion angle. The entry axis pin 251 slides on the connection surface 244 of the support plate 204, and the exit axis pin 252 has not yet contacted the support plate 204. The support plate 204 and the entry axis pin 251 and the exit axis pin 252 do not act, and the side slide plate 205 and the circuit breaker body do not move. Move from the connection clamping position to the insertion position, although the side slide plate and the circuit breaker body do not move, the interlocking plate 242 rotates with the support plate 204 and contacts the trigger rod 422 of the drawer push rod 402. Under the action of the interlocking plate 242, the drawer push rod 402 overcomes the spring force of the push rod spring and rotates from the release position to the interlocking position. The second interlocking rod 421 of the drawer push rod 402 presses down and locks the tripping rod 501, and the circuit breaker body cannot be closed. When the connection clamping position is moved to the inserted position, the side slide plate and the circuit breaker body do not move, the sliding plate moves outward, the locking rack 303 is engaged 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 circuit breaker body. In the mode of using a shorter locking rack (corresponding to the second mode mentioned above), when the insertion position is reached, the locking rack is disengaged from the locking gear, and the actions of the electric connection device loosening the busbar and the busbar of the circuit breaker body exiting the electric connection device are performed separately. In the mode of using a longer locking rack (corresponding to the first mode mentioned above), when the insertion position is reached, the locking rack and the locking gear are still engaged and have not been disengaged, but there is no contact force between the electric connection device and the busbar, and the actions of the electric connection device loosening and the busbar of the circuit breaker body exiting the electric connection device are performed synchronously. As described above, when the electric connection device has a sufficiently large clamping stroke, in some embodiments, the locking rack and the locking gear can also be configured to always be engaged. If it is in the form of always meshing, the locking rack and the locking gear will not be disengaged.

[0059] From the inserted position to the test position, refer to Figure 8 , Figure 9a and Figure 9b. Under the action of the drive shaft 201, the sliding plate 202 moves along the guide groove 225 toward the outside of the drawer device, and the inner side end of the unlocking groove 223 pushes the unlocking rod 236, so that the main shaft 203 rotates from the insertion position angle to the test angle. In this process, the first driving rod 233 enters the first driving groove 221, and the second driving rod 235 enters the second driving groove 222. The inner side end of the unlocking groove 223 continues to push the unlocking rod 236 until the unlocking rod 236 escapes from the unlocking groove 223, and then, the inner side end of the first driving groove 221 continues to push the first driving rod 233, and the inner side end of the second driving groove 222 continues to push the second driving rod 235, so that the main shaft 203 continues to rotate until it rotates to the test angle. From the insertion position to the test position, the main shaft 203 rotates from the insertion position angle to the test angle, and the support plate 204 engaged with the main shaft through the transmission gear 237 is also driven to rotate from the insertion position angle to the test angle. The withdrawal drive part 245 of the support plate 204 contacts and pushes the withdrawal axis pin 252, so that the side slide plate 205 drives the circuit breaker body to move outward, and at the same time, the entry axis pin 251 enters the driving groove 243 from the connection surface of the support plate. The support plate 204 continues to rotate, and the withdrawal axis pin 252 is separated from the withdrawal drive part 245 of the support plate. Then, the entry axis pin 251 is pushed by the inner side end of the driving groove 243 of the support plate, so that the side slide plate 205 drives the circuit breaker body to continue to move outward to the test position. In another embodiment, the withdrawal drive part 245 can also always push the withdrawal axis pin 252 to the test position, and the entry axis pin 251 does not participate in the withdrawal process. In the process from the inserted position to the test position, the circuit breaker body moves outward, the trip rod 501 is separated from the second interlocking rod 421 of the drawer push rod 402, but continues to be pressed down and locked by the second interlocking part 412 of the inner side end of the drawer interlocking member 401, and the circuit breaker body cannot be closed. The circuit breaker body moves to the test position, the trip rod 501 enters the recessed release portion 413 in the middle of the drawer interlock 401, the trip rod 501 is released, and the circuit breaker body can be closed. From the inserted position to the test position, the sliding plate and the circuit breaker body move outward, and the busbar of the circuit breaker body gradually withdraws from the electrical connection device. In the mode of using a longer locking rack (corresponding to the first mode mentioned above), the locking rack and the locking gear are still engaged, driving the locking gear to continue to rotate in the loosening direction, the clamping mechanism continues to loosen, the sliding plate and the circuit breaker body move outward to the test position, the busbar of the circuit breaker body is separated from the electrical connection device, and the locking rack is disengaged from the locking gear. In the mode of using a shorter locking rack (corresponding to the second mode mentioned above), the locking rack and the locking gear are already disengaged at the inserted position, and from the inserted position to the test position, the sliding plate and the circuit breaker body move outward, and the busbar of the circuit breaker body gradually withdraws from the electrical connection device.As described above, when the electrical connection device has a sufficiently large clamping stroke, in some embodiments, the locking rack and the locking gear can also be configured to always be engaged. If they are always engaged, the locking rack and the locking gear do not disengage.

[0060] From the test position to the separation position, refer to Figure 6 , Figure 7a and Figure 7b Under the action of the drive shaft 201, the sliding plate 202 moves along the guide groove 225 toward the outside of the drawer device, the inner side end of the first drive groove 221 pushes the first drive rod 233, and the inner side end of the second drive groove 222 pushes the second drive rod 235, so that the main shaft rotates to the separation angle, the first drive rod 233 remains in the first drive groove 221, and the second drive rod 235 remains in the second drive groove 222, ready for the next entry process. From the test position to the separation position, the main shaft rotates from the test angle to the separation angle, and the support plate 204 engaged 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 side end of the driving groove 243 pushes the entry shaft pin 251, so that the side slide plate 205 and the circuit breaker body move outward to the separation position. In another embodiment, the exit drive unit 245 can also always push the exit shaft pin 252 to the separation position, and the entry shaft pin 251 does not participate in the exit process. From the test position to the separation position, the circuit breaker body moves outward, the trip rod 501 escapes from the release portion 413 of the drawer interlock 401, and is locked by the first interlock portion 411 at the outer end of the drawer interlock, so that the circuit breaker body cannot be closed. From the test position to the separation position, the locking gear is disengaged from the locking rack, and the locking mechanism does not work. As described above, in the case where the electrical connection device has a sufficiently large clamping stroke, in some embodiments, the locking rack and the locking gear can also be configured to always be engaged. If it is in the form of always being engaged, the locking rack and the locking gear are not disengaged.

[0061] The structure and working state of the electric switch device are introduced above, and it is clarified that the electric switch device in the present invention includes a drawer device and a circuit breaker body, and the relative positions of the circuit breaker body and the drawer device include: a separation position, a test position, an insertion position and a connection clamping position. In the separation position, the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body cannot be closed. In the test position, the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body can be closed. In the insertion position, the busbar of the circuit breaker body is fully inserted into the electrical connection device, the electrical connection device does not clamp the busbar, and the circuit breaker cannot be closed. In the connection clamping position, the busbar of the circuit breaker body is fully inserted into the electrical connection device and the electrical connection device clamps the busbar, and the circuit breaker body can be closed. From the test position to the connection clamping position, there are actually two different working processes. It includes an insertion process form and a position in place form: in the insertion process form, the circuit breaker body still moves relative to the drawer device, the busbar is still in the process of gradually inserting the electrical connection device, and the busbar is partially inserted into the electrical connection device. In the in-position state, the busbar has been completely inserted into the electrical connection device, the circuit breaker body no longer moves relative to the drawer device, and the subsequent displacement of the sliding plate no longer drives the circuit breaker body to move, but drives the electrical connection device to clamp the busbar. In both the insertion process state and the in-position state, the electrical connection device has not completed the clamping action on the busbar, and the circuit breaker cannot be closed. In the connection clamping position, the busbar of the circuit breaker body contacts the electrical connection device, the electrical connection device clamps the busbar, and the circuit breaker body can be closed.

[0062] The position indicating device needs to accurately indicate the relative position between the circuit breaker body and the drawer device. In one embodiment, the position indicating device is installed on the drawer device, and the position indicating device has three stable positions and two transition areas. The three stable positions include: a separation indicating position, a test indicating position, and a connection indicating position. The two transition areas include: a separation-test transition area and a test-connection transition area. The correspondence between the four relative positions between the circuit breaker body and the drawer device and the three stable positions and two transition areas of the position indicating device is as follows:

[0063] The circuit breaker body is in the separation position, and the position indicating device is in the separation indicating position;

[0064] The circuit breaker body is located between the separation position and the test position, and the position indicator is in the separation-test transition area;

[0065] The circuit breaker body is in the test position, and the position indicator is in the test indication position;

[0066] The circuit breaker body is located between the test device and the inserted position, and the position indicator is in the test-connection transition area;

[0067] The circuit breaker body and the drawer device are located at the inserted position, and the position indicator device is in the test-connection transition area; for the two states from the test position to the connection clamping position, the corresponding relationship is as follows: the circuit breaker body and the drawer device are located at the insertion process state of the inserted position, the circuit breaker body continues to move, the busbar continues to be inserted into the electrical connection device, and the position indicator device is in the test-connection transition area; the circuit breaker body and the drawer device are located at the inserted position position in the position in-place state, the circuit breaker body no longer moves, the electrical connection device performs the action of clamping the busbar, and the position indicator device is in the test-connection transition area;

[0068] The circuit breaker body and the drawer device are located at the connection clamping position, and the position indicating device is at the connection indicating position.

[0069] In one embodiment, the position indicating device comprises a snap ring and an indicating rod. The snap ring is mounted on a driving mechanism of the electric switch device and moves with the driving mechanism, the indicating rod is connected to 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 rotation: a separation indicating position, a test indicating position and a connection indicating position, and two transition areas: a separation-test transition area and a test-connection transition area.

[0070] Fig.16 The structure diagram of the snap ring in the position indicating device of the electric switch device according to one embodiment of the present invention is disclosed. In one embodiment, the snap ring 601 is installed on the sliding plate 202 of the driving mechanism and moves with the sliding plate 202. As described above, the sliding plate 202 has four positions: a separation position, a test position, an insertion position and a connection clamping position, corresponding to the relative position of the circuit breaker body and the drawer device. The snap ring 601 will also move through these four positions following the sliding plate 202. Fig.16 As shown, there are protruding teeth 602 on the snap ring 601 , and the teeth 602 are located on the inner circle of the snap ring 601 .

[0071] Fig.15a and Fig.15b The structure diagram of the indicating rod in the position indicating device of the electric switch device according to one embodiment of the present invention is disclosed. Fig.15a and Fig.15b As shown, the indicator rod 701 includes an indicator component located at the rear end, a locking component located in the middle, and a driving component located at the front end.

[0072] The indicating component located at the rear end of the indicating rod 701 includes: a pointer 702 and a mark 703. The pointer 702 is fixed on the indicating rod 701 and rotates with the indicating rod 701, and the mark 703 is distributed around the pointer 702 in an arc shape. Fig.17a , Fig.17b and Fig.17cA schematic diagram of an indicating component of a position indicating device of an electric switch device according to an embodiment of the present invention is disclosed. As shown in the figure, the mark 703 includes three labels and a connecting area between the labels. The three labels correspond to three steady-state positions: "Separation" corresponds to the separation indicating position, "Test" corresponds to the test indicating position, and "Connection" corresponds to the connection indicating position. The connecting area between the labels corresponds to two transition areas: the blank area between "Separation" and "Test" corresponds to the separation-test transition area, and the blank area between "Test" and "Connection" corresponds to the test-connection transition area. Fig.17a , Fig.17b and Fig.17c Different indication states are shown respectively. Fig.17a The middle pointer points to the label "Separate", Fig.17b The middle pointer points to the label "Test". Fig.17c The middle pointer points to the label "Connect".

[0073] The locking component located in the middle of the indicator rod 701 includes a locking block 704 and a locking auxiliary component 705 . Fig.18a , Fig.18b and Fig.18c The schematic diagram of the working principle of the locking component of the position indicating device of an electric switch device according to an embodiment of the present invention is disclosed. As shown in the figure, there are three locking grooves on the locking block 704, and the three locking grooves correspond to the three stable positions of the separation indicating position, the test indicating position and the connection indicating position respectively. With the help of the protrusion on the locking plate 801 of the position lock, when the indicating rod 701 rotates to the three stable positions of the separation indicating position, the test indicating position and the connection indicating position, the protrusion on the locking plate 801 is just aligned with the position of the groove on the locking block 704. The protrusion is stuck in the groove, so that the indicating rod 701 can no longer rotate, and the indicating rod is locked by the locking block. There is a protrusion on the locking auxiliary part 705. Reference Fig.18a , Fig.18b and Fig.18c As shown, the protrusion on the locking auxiliary member 705 serves to assist the locking of the locking plate 801. There is a stopper rod 802 below the indicator rod 701. When the stopper rod 802 is lifted, the locking plate 801 is blocked, and the protrusion on the locking plate 801 will not enter the groove on the locking block 704. When the stopper rod 802 is pressed down, the stopper rod 802 no longer blocks the locking plate 801, and the protrusion on the locking plate 801 can enter the groove on the locking block 704. The protrusion on the locking auxiliary member 705 serves to press down the stopper rod 802. When the indicator rod 701 rotates so that the protrusion on the locking auxiliary member 705 is downward, the stopper rod 802 is pressed down, and when the indicator rod 701 rotates so that the recessed position on the locking auxiliary member 705 is downward, the stopper rod 802 is lifted.

[0074] The connection method between the indicator rod 701 and the snap ring 601 is that the snap ring is sleeved on the indicator rod. Figure 5 , Figure 9a , Fig.11a and Fig.13a The status displayed. Fig.15a and Fig.15b , there is a driving groove on the driving component at the front end of the indicator rod 701. The driving groove is a curved groove and has displacement in the radial direction of the indicator rod. The driving groove includes several driving surfaces with radial displacement, and these driving surfaces together constitute the driving groove. The position of the indicator rod 701 does not move, while the snap ring 601 moves with the sliding plate 202. The snap teeth 602 on the snap ring will contact different driving surfaces on the driving groove as the sliding plate moves. Since there is radial displacement between each driving surface, the movement can be converted into rotation through the cooperation of the snap teeth and the driving surface, and the indicator rod 701 can be driven to rotate. In the illustrated embodiment, the driving groove includes, from back to front, a separation position driving surface 706, a separation-test transition area driving surface 707, a test position driving surface 708, a test-connection transition area driving surface 709, and a connection position driving surface 710. The separation position driving surface 706, the test position driving surface 708 and the connection position driving surface 710 are curved surfaces with radial displacement. When the latch 602 contacts the separation position driving surface 706, the test position driving surface 708 or the connection position driving surface 710, relative radial movement will occur. Since the indicator rod 701 and the snap ring 601 are restricted from lateral movement by the sliding plate, this relative radial movement is manifested as the rotation of the indicator rod 701. The separation-test transition area driving surface 707 and the test-connection transition area driving surface 709 are planes without radial displacement. When the latch 602 contacts the separation-test transition area driving surface 707 and the test-connection transition area driving surface 709, no relative radial movement will occur, so the indicator rod 701 does not rotate. In the illustrated embodiment, the length of the test-connection transition area driving surface 709 is significantly greater than the length of the separation-test transition area driving surface 707. Based on the two forms of the inserted position: the insertion process form and the position in place form, the test-connection transition area driving surface can be considered to include two driving surfaces: the insertion driving surface and the clamping driving surface, and there is no radial displacement between the insertion driving surface and the clamping driving surface. The insertion driving surface and the clamping driving surface can be connected as a whole to form a continuous plane, just like Fig.15a and Fig.15bThe form shown. The insertion drive surface and the clamping drive surface can also be two separate surfaces. Although the two surfaces are separated, there is no radial displacement, and the two surfaces are located on the same axial connection line. The circuit breaker body is in: the insertion process form, the latch tooth is located on the insertion drive surface; the position in place form, the latch tooth is located on the clamping drive surface; the insertion in place position, the latch tooth is located in the connection area between the insertion drive surface and the clamping drive surface. The corresponding relationship between the contact relationship between the latch tooth and each drive surface on the drive groove and the position of the sliding plate is as follows:

[0075] When the circuit breaker body is in the separation position, the clamping teeth on the clamping ring are in contact with the separation position driving surface on the driving groove;

[0076] The circuit breaker body moves from the separation position to the test position, and the clamping teeth on the clamping ring contact the separation-test transition area driving surface on the driving groove;

[0077] When the circuit breaker body is in the test position, the clamping teeth on the clamping ring are in contact with the test position driving surface on the driving groove;

[0078] The circuit breaker body moves from the test position to the inserted position, and the clamping teeth on the clamping ring contact the insertion driving surface in the test-connection transition area driving surface on the driving groove;

[0079] When the circuit breaker body is in the inserted position, the teeth on the clamping ring are in contact with the driving surface of the test-connection transition area on the driving groove, wherein when the circuit breaker body is in the insertion process state, the teeth on the clamping ring are in contact with the insertion driving surface of the driving surface of the test-connection transition area on the driving groove, and when the circuit breaker body is in the in-position state, the teeth on the clamping ring are in contact with the clamping driving surface of the driving surface of the test-connection transition area on the driving groove;

[0080] When the circuit breaker body is at the connection clamping position, the clamping teeth on the clamping ring are in contact with the connection position driving surface on the driving groove.

[0081] The position indicating device obtains the position signal directly from the sliding plate through the cooperation of the clamp ring and the indicating rod. The sliding plate is the basic component that determines the relative position between the circuit breaker body and the drawer device, so the position signal from the sliding plate is the most accurate and effective. The position indicating device avoids the complex multi-channel transmission mechanism, eliminates the position deviation caused by the size deviation of the components and the assembly error during the transmission process of the multi-channel transmission mechanism, and makes the position indication more accurate.

[0082] The closing lock of the electric switch device of the present invention cooperates with the electric switch device using the electric connection device of the new structure. The electric connection device can be configured with a large clamping force to clamp the main body busbar as needed, so that the overall contact resistance of the electrical device is greatly reduced, especially in long-term use, the power consumption is greatly reduced, and the use cost is greatly saved. The higher the rated current of the electrical device, the more significant this advantage is. On the other hand, the reduction in contact resistance reduces the temperature rise of the product and the heat generation of the electrical device. There is no need to consider a large heat dissipation space, which is conducive to reducing the size of the product and improving the reliability of long-term use. The electric switch device provides a drawer device, a drive mechanism, a locking mechanism and an interlocking mechanism that are matched with the electric connection device. Combined with the characteristics of the electric connection device, the electric switch device has four working positions: a separation position, a test position, an insertion position and a connection clamping position, which ensures the operability and safety of the electric switch device. The position indicating device of the present invention directly obtains the position signal from the drive component and can accurately indicate the current position of the electric switch device. For the four working positions of separation position, test position, insertion position and connection clamping position, the position indicating device of the present invention matches three steady-state positions: separation indication position, test indication position and connection indication position and two transition areas: separation-test transition area and test-connection transition area.

[0083] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A position indicating device for an electric switch device, the electric switch device comprising a drawer device and a circuit breaker body, characterized in that: The relative positions of the circuit breaker body and the drawer device include: a separation position, a test position, an insertion position and a connection clamping position. In the separation position, the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body cannot be closed. In the test position, the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body can be closed. In the insertion position, the busbar of the circuit breaker body is fully inserted into the electrical connection device, the electrical connection device does not clamp the busbar, and the circuit breaker cannot be closed. In the connection clamping position, the busbar of the circuit breaker body is fully inserted into the electrical connection device and the electrical connection device clamps the busbar, and the circuit breaker body can be closed. The position indicating device comprises a snap ring and an indicating rod, wherein the snap ring is mounted on a sliding plate of a driving mechanism and moves with the sliding plate, the snap ring is provided with protruding snap teeth, the indicating rod is connected with the snap ring, the snap ring is sleeved on the indicating rod, a driving groove is provided on a driving component of the indicating rod, the driving groove comprises a plurality of driving surfaces with radial displacement, the snap teeth are in contact with different driving surfaces on the driving groove, and the indicating rod is driven to rotate, the movement of the snap ring is converted into the rotation of the indicating rod, and the indicating rod indicates three steady-state positions by rotating: a separation indicating position, a test indicating position and a connection indicating position; wherein The indicator rod comprises an indicator component at the rear end, a locking component at the middle part and the driving component at the front end, wherein the locking component comprises a locking block and a locking auxiliary component; the locking block has three locking grooves, and the three locking grooves correspond to three stable positions of a separation indication position, a test indication position and a connection indication position, respectively. In the three stable positions, the locking block locks the indicator rod, and the locking auxiliary component has a protrusion; The position indicating device is installed on the drawer device, and the position indicating device has three stable positions, which include: a separation indicating position, a test indicating position and a connection indicating position; Wherein, the circuit breaker body is located at the separation position, and the position indicating device is at the separation indicating position; The circuit breaker body is located between the separation position and the test position, and the position indicating device is located in the area between the separation indicating position and the test indicating position; The circuit breaker body is in the test position, and the position indicator is in the test indication position; The circuit breaker body is located between the test position and the inserted position, and the position indicator is located in the area between the test indication position and the connection indication position; The circuit breaker body is located at the inserted position, and the position indicator is located in the area between the test indication position and the connection indication position; The circuit breaker body is located at the connection clamping position, and the position indicating device is at the connection indicating position.

2. The position indicating device of an electric switch device according to claim 1, characterized in that: The circuit breaker body moves from the test position to the connection clamping position, including the insertion process and the position in place; The circuit breaker body is in the insertion process state, the circuit breaker body continues to move, the busbar gradually penetrates into the electrical connection device, and the position indication device is in the area between the test indication position and the connection indication position; The circuit breaker body is in the position in place, the circuit breaker body no longer moves, the electrical connection device performs the action of clamping the busbar, and the position indication device is in the area between the test indication position and the connection indication position; After the circuit breaker body reaches the inserted position, it switches from the insertion process state to the position in place state.

3. The position indicating device of an electric switch device according to claim 1, characterized in that: The indicating component located at the rear end of the indicating rod includes: a pointer and a mark. The pointer rotates with the indicating rod. The mark is distributed in an arc shape. The mark includes three labels and a connecting area between the labels. The three labels correspond to three stable positions: a separation indicating position, a test indicating position and a connection indicating position. The connecting area between the labels corresponds to two transition areas: a separation-test transition area and a test-connection transition area.

4. The position indicating device of an electric switch device according to claim 1, characterized in that: The driving groove includes, from back to front, a separation position driving surface, a separation-test transition area driving surface, a test position driving surface, a test-connection transition area driving surface and a connection position driving surface; The separation position driving surface, the test position driving surface and the connection position driving surface are curved surfaces with radial displacement, and the separation-test transition area driving surface and the test-connection transition position area driving surface are planes without radial displacement.

5. The position indicating device of an electric switch device according to claim 4, characterized in that: The length of the driving surface in the test-connection transition region is greater than the length of the driving surface in the separation-test transition region; Test-connection transition area driving surface includes an insertion driving surface and a clamping driving surface, and there is no radial displacement between the insertion driving surface and the clamping driving surface; The circuit breaker body is: Insertion process form, the latch teeth are located on the insertion drive surface; In the positional state, the latch teeth are located on the clamping drive surface; When inserted into the final position, the latch teeth are located at the connection area between the insertion drive surface and the clamping drive surface.

6. The position indicating device of an electric switch device according to claim 4, characterized in that: When the circuit breaker body is in the separation position, the clamping teeth on the clamping ring are in contact with the separation position driving surface on the driving groove; The circuit breaker body moves from the separation position to the test position, and the clamping teeth on the clamping ring contact the separation-test transition area driving surface on the driving groove; When the circuit breaker body is in the test position, the clamping teeth on the clamping ring are in contact with the test position driving surface on the driving groove; The circuit breaker body moves from the test position to the inserted position, and the clamping teeth on the clamping ring contact the insertion driving surface in the test-connection transition area driving surface on the driving groove; When the circuit breaker body is in the inserted position, the teeth on the clamping ring are in contact with the driving surface of the test-connection transition area on the driving groove, wherein when the driving mechanism is in the insertion process state, the teeth on the clamping ring are in contact with the insertion driving surface of the driving surface of the test-connection transition area on the driving groove, and when the circuit breaker body is in the in-position state, the teeth on the clamping ring are in contact with the clamping driving surface of the driving surface of the test-connection transition area on the driving groove; When the circuit breaker is in the connection clamping position, the clamping teeth on the clamping ring are in contact with the connection position driving surface on the driving groove.

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