Position locking device for electric switch device

Abstract

The present invention discloses a position locking device for an electric switch device, the electric switch device comprises a drawer device and a circuit breaker body, and 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 position locking device is connected to a driving mechanism of the electric switch device, and the position locking device has three locking positions: a separation locking position, a test locking position and a connection locking position. In the locking position, the position locking device locks the driving mechanism so that the driving mechanism cannot drive the circuit breaker body and the drawer device to perform relative displacement. When the position locking device is unlocked and exits the locking position, the driving mechanism can drive the circuit breaker body and the drawer device to perform relative displacement.

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 locking device for 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 locking device is connected to the driving mechanism of the electric switch device. The position locking device has three locking positions: a separation locking position, a test locking position and a connection locking position. In the locking position, the position locking device locks the driving mechanism so that the driving mechanism cannot drive the circuit breaker body and the drawer device to perform relative displacement. The position locking device is unlocked and exits the locking position, and the driving mechanism can drive the circuit breaker body and the drawer device to perform relative displacement. Wherein, the circuit breaker body is in the separation position, the position locking device is in the separation locking position and locks the driving mechanism. The position locking device is unlocked and exits the separation locking position, and the driving mechanism drives the circuit breaker body to move between the separation position and the test position. The circuit breaker body is in the test position, the position locking device is in the test locking position and locks the driving mechanism. The position locking device is unlocked and exits the test locking position, and the driving mechanism drives the circuit breaker body to move between the test device and the insertion position. The circuit breaker body is in the insertion position, and the position locking device has not yet entered the connection locking position. The circuit breaker body and the drawer device are in the connection clamping position, and the position locking device is in the connection locking position and locks the driving mechanism.

[0006] In one embodiment, the circuit breaker body moves from the test position to the connection 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 locking device does not enter the connection locking 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 locking device still does not enter the connection locking 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 locking device includes: a locking component, an unlocking component and a positioning component. The locking component cooperates with the driving shaft in the driving mechanism, and the locking component can move close to the driving shaft and clamp the driving shaft so that the driving shaft cannot rotate, or the locking component can move away from the driving shaft so that the driving shaft can rotate. The locking component is unlocked and separated from the driving shaft, and the unlocking component limits the locking component to prevent the locking component from clamping the driving shaft again. The positioning component is provided with three positioning grooves, and the three positioning grooves correspond to the separation locking position, the test locking position and the connection locking position respectively. The positioning component uses the three positioning grooves to enable the locking component to lock the driving shaft in the separation locking position, the test locking position and the connection locking position.

[0008] In one embodiment, the locking component is a locking plate. A drive shaft hole is formed on the locking plate, through which the drive shaft passes, the size of the drive shaft hole is larger than the outer diameter of the drive shaft, the drive shaft hole has an inwardly protruding locking boss, and the drive shaft has a locking groove. When the locking plate moves, the locking boss approaches the drive shaft and is inserted into the locking groove on the drive shaft, so that the drive shaft cannot rotate. When the locking plate moves, the locking boss exits the locking groove and moves away from the drive shaft, so that the drive shaft can rotate.

[0009] In one embodiment, the positioning component is an arc block, the positioning component is mounted on the indicating rod of the position indicating device and rotates with the indicating rod, and the three positioning grooves are distributed on the arc block. The first end of the locking plate has a protruding positioning boss, the positioning boss is aligned with the positioning groove, the positioning boss enters the positioning groove, the locking plate moves toward the drive shaft and locks the drive shaft, the positioning boss is aligned with the rest of the arc block, the arc block supports the positioning boss, the locking plate is away from the drive shaft, and the drive shaft can rotate.

[0010] In one embodiment, the positioning component rotates following the indicating rod, and the locking plate locks the driving shaft in the separation locking position, the test locking position and the connection locking position respectively.

[0011] In one embodiment, the unlocking component is adjacent to the locking component, the unlocking component is adjacent to the first end of the locking plate, the unlocking component is in the shape of an arc rod, the first end of the unlocking component has an axial hole, the sliding plate of the driving mechanism is installed with a rotating shaft, the axial hole of the unlocking component is installed on the rotating shaft, the unlocking component can rotate around the rotating shaft, and the second end of the unlocking component has a limiting block. The first end of the locking plate has a limiting step, the unlocking component rotates in the limiting direction, the limiting block clamps the limiting step, the unlocking component limits the locking component, the unlocking component rotates in the releasing direction, the limiting block is separated from the limiting step, and the unlocking component does not restrict the locking component.

[0012] In one embodiment, the positioning component is provided with an unlocking auxiliary component, which is an arc block, and the arc block is provided with three auxiliary unlocking grooves, which correspond to the separation locking position, the test locking position and the connection locking position respectively. The middle part of the unlocking component is a concave arc, and the arc surface of the concave arc matches the arc surface of the arc block of the unlocking auxiliary component. There is a limiting protrusion in the middle position of the concave arc of the unlocking component, and the shape and size of the limiting protrusion match the auxiliary unlocking groove on the arc block.

[0013] In one embodiment, the second end of the locking plate has a spring hanging rod and a toggle rod, the spring hanging rod is connected to a locking spring, and the locking spring pulls the locking plate toward the first end. The second end of the unlocking component has a spring hanging hole, the spring hanging hole is connected to a limit spring, and the limit spring pulls the unlocking component to rotate upward.

[0014] In one embodiment, in the separation locking position, the test locking position and the connection locking position, the positioning boss of the first end of the locking plate enters the corresponding positioning groove on the positioning component, and the limiting protrusion on the unlocking component is aligned with the corresponding auxiliary unlocking groove on the unlocking auxiliary component, the bottom surface of the limiting step of the locking plate abuts against the top of the limiting block of the unlocking component, and the unlocking component is pressed down. An external force is applied to the toggle rod of the locking plate, so that the locking plate moves toward the second end, the positioning boss of the locking plate exits the corresponding positioning groove on the positioning component, the bottom surface of the limiting step of the locking plate also releases the top of the limiting block of the unlocking component, the limiting spring pulls the unlocking component to rotate upward, the limiting protrusion on the unlocking component enters the corresponding auxiliary unlocking groove on the unlocking auxiliary component, so that the unlocking auxiliary component does not suppress the unlocking component to rotate upward, the side edge of the limiting block of the unlocking component abuts against the side edge of the limiting step of the locking plate, and the unlocking component limits the locking plate to prevent the locking plate from moving toward the first end. At positions other than the separation locking position, the test locking position and the connection locking position, the arc block of the positioning component presses against the positioning boss of the locking plate, the locking plate moves away from the drive shaft, and the arc block of the unlocking auxiliary component presses against the limiting boss of the unlocking component to press the unlocking component down.

[0015] In one embodiment, a guide groove is opened on the locking plate, and the guide groove is a long waist hole with a round hole at one end. A guide bolt is installed on the sliding plate of the driving mechanism, and the guide groove is installed on the guide bolt. The guide groove slides relative to the guide bolt so that the locking plate moves closer to or away from the driving shaft. The size of the long waist hole of the guide groove matches the size of the rod of the guide bolt, and the size of the round hole at one end of the guide groove matches the size of the head of the guide bolt, and the diameter of the round hole is larger than the diameter of the long waist hole.

[0016] The position locking 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 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, ensuring the operability and safety of the electric switch device. The position locking device of the present invention has three locking positions: a separation locking position, a test locking position and a connection locking position. In the locked position, the position locking device locks the driving mechanism so that the driving mechanism cannot drive the circuit breaker body and the drawer device to move relative to each other. When the position locking device is unlocked and exits the locked position, the driving mechanism can drive the circuit breaker body and the drawer device to move relative to each other. The electric switch device of the new structure of the electrical connection device has an additional insertion position compared to the prior art, but with the new position locking device, the original three-position locking 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

[0017] 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:

[0018] 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.

[0019] 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.

[0020] Figure 3 A structural diagram of a locking mechanism in an electric switch device according to an embodiment of the present invention is disclosed.

[0021] Figure 4A 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.

[0022] Figure 5 The overall structural diagram of an electric switch device according to an embodiment of the present invention is disclosed.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Fig.18 A structural diagram of a locking component in a position locking device of an electric switch device according to an embodiment of the present invention is disclosed.

[0036] Fig.19 A structural diagram of an unlocking component in a position locking device of an electric switch device according to an embodiment of the present invention is disclosed.

[0037] Fig.20a and Fig.20b A structural diagram of a positioning component in a position locking device of an electric switch device according to an embodiment of the present invention is disclosed.

[0038] Fig.21a , Figure 21b and Fig.21c A schematic diagram of the working principle of a position locking device for an electric switch device according to an embodiment of the present invention is disclosed. DETAILED DESCRIPTION

[0039] The present invention discloses a position locking device for an electric switch device. The working state of the position locking 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 1b The 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 1bIt 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:

[0040] 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;

[0041] 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;

[0042] 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;

[0043] 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.

[0044] 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.

[0045] The structures of the driving mechanism, locking mechanism and interlocking mechanism in the electric switch device of the present invention are respectively introduced below.

[0046] 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.

[0047] 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 first guide groove 225, and the first guide groove 225 guides when the sliding plate moves, and the sliding plate 202 moves along the first guide groove 225.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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 first 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.

[0055] 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.11a and 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 first 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.

[0056] 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.

[0057] 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 first 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.

[0058] 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 completely enters 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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 first 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.

[0063] 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 first 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.

[0064] 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 first 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.

[0065] 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, it actually includes two different working processes: the insertion process form and the position in place form. In the insertion process form, the circuit breaker body still moves relative to the drawer device, and 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.

[0066] The relative position between the circuit breaker body and the drawer device is indicated by the position indicating 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:

[0067] The circuit breaker body is in the separation position, and the position indicating device is in the separation indicating position;

[0068] 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;

[0069] The circuit breaker body is in the test position, and the position indicator is in the test indication position;

[0070] 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;

[0071] The circuit breaker body is located in the inserted position, and the position indicating device is in the test-connection transition area; for the two forms in the inserted position, the corresponding relationship is as follows: the circuit breaker body and the drawer device are located in the insertion process form 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 locking device has not entered the connection locking position; the circuit breaker body and the drawer device are located in the position-in-place form of the inserted position, the circuit breaker body no longer moves, the electrical connection device performs the action of clamping the busbar, and the position locking device still does not enter the connection locking position.

[0072] The circuit breaker body is located at the connection clamping position, and the position indicating device is at the connection indicating position.

[0073] 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.

[0074] 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 .

[0075] 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.

[0076] 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".

[0077] The locking component located in the middle of the indicator rod 701 includes a locking block 704 and a locking auxiliary member 705. The locking block 704 is a positioning component in the position locking device, and the locking auxiliary member 705 is an unlocking auxiliary member in the position locking device. These two components will be described together with the position locking device below.

[0078] 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 insertion into the position: the insertion process form and the position into the position form, the driving surface of the test-connection transition area can be considered to include two driving surfaces: the in-position driving surface and the clamping driving surface. There is no radial displacement between the in-position driving surface and the clamping driving surface. The in-position driving surface and the clamping driving surface can be connected as a whole to form a continuous plane, just like Fig.15a and Fig.15b The in-position 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 following: the insertion process form, the latch teeth are located on the insertion drive surface; the in-position form, the latch teeth are located on the clamping drive surface; the insertion in-position position, the latch teeth are located in the connection area between the insertion drive surface and the clamping drive surface.

[0079] The corresponding relationship between the contact relationship between the latch teeth and each driving surface on the driving groove and the position of the sliding plate is as follows:

[0080] 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;

[0081] 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;

[0082] 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;

[0083] The circuit breaker body moves from the test position to the inserted position, and the clamping teeth on the clamping ring contact with the in-position driving surface in the test-connection transition area driving surface on the driving groove;

[0084] When the circuit breaker body is in the inserted position, the teeth on the clamping ring contact 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 contact the in-position 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 contact the clamping driving surface of the driving surface of the test-connection transition area on the driving groove;

[0085] 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.

[0086] The position locking device is connected to the driving mechanism of the electric switch device, and the position locking device is linked to the position indicating device. When the position indicating device indicates three stable positions: the separation indicating position, the test indicating position and the connection indicating position, the position locking device has three locking positions accordingly: the separation locking position, the test locking position and the connection locking position. In the locking position, the position locking device locks the driving mechanism so that the driving mechanism cannot drive the circuit breaker body and the drawer device to perform relative displacement, that is, when the position indicating device indicates the stable position, the position locking device will lock the driving mechanism so that the driving mechanism cannot continue to move.

[0087] When the position locking device is unlocked and exits the locking position, the driving mechanism can drive the circuit breaker body and the drawer device to move relative to each other. Correspondingly, the position indicating device is also in two transition areas: the separation-test transition area and the test-connection transition area. Specifically, the corresponding relationship between the four relative positions of the circuit breaker body and the drawer device and the position locking device is as follows:

[0088] The circuit breaker body is in the separated position, and the position locking device is in the separated locking position and locks the driving mechanism;

[0089] The position locking device is unlocked and exits the separation locking position, and the driving mechanism drives the circuit breaker body to move between the separation position and the test position;

[0090] The circuit breaker body is in the test position, the position locking device is in the test locking position and locks the drive mechanism;

[0091] The position locking device is unlocked to exit the test locking position, and the driving mechanism drives the circuit breaker body to move between the experimental device and the inserted position;

[0092] The circuit breaker body is in the inserted position, and the position locking device has not yet entered the connection locking position;

[0093] The circuit breaker body is located in the connection clamping position, and the position locking device is in the connection locking position and locks the driving mechanism.

[0094] The position locking device of the present invention includes: a locking component, an unlocking component 802 and a positioning component 803. The locking component cooperates with the driving shaft 201 in the driving mechanism. The locking component can move close to the driving shaft 201 and clamp the driving shaft so that the driving shaft cannot rotate. When unlocking, the locking component can move away from the driving shaft 201 so that the driving shaft can rotate. When the locking component is unlocked and separated from the driving shaft 201, the unlocking component 802 limits the locking component to prevent the locking component from clamping the driving shaft again. The positioning component 803 has three positioning grooves, and the three positioning grooves correspond to the separation locking position, the test locking position and the connection locking position respectively. The positioning component 803 uses the three positioning grooves to enable the locking component to lock the driving shaft in the separation locking position, the test locking position and the connection locking position.

[0095] Fig.18 The structural diagram of the locking component in the position locking device of the electric switch device according to one embodiment of the present invention is disclosed. In the illustrated embodiment, the locking component is a locking plate 801. The locking plate 801 is provided with a drive shaft hole 811, through which the drive shaft 201 passes. The size of the drive shaft hole 811 is larger than the outer diameter of the drive shaft 201, so that the drive shaft 201 can rotate freely in the drive shaft hole 811 under normal circumstances. The drive shaft hole 811 has a locking boss 812 protruding inwardly, and the drive shaft 201 has a locking groove. Fig.21a , Figure 21b and Fig.21cAs shown, a series of locking grooves can be arranged along the circumference of the drive shaft 201, such as four locking grooves arranged in the illustrated embodiment. A large number of locking grooves allows the drive shaft to be locked in most cases. The locking plate 801 moves, and the locking boss 812 approaches the drive shaft 201 and is inserted into the locking groove on the drive shaft, so that the drive shaft cannot rotate. When unlocking, the locking plate moves, the locking boss 812 exits the locking groove and moves away from the drive shaft 201, and the drive shaft can rotate. The first end (the right end in the figure) of the locking plate 801 has a protruding positioning boss 813, and the first end of the locking plate also has a limiting step 814 below the positioning boss 813. The second end (the left end in the figure) of the locking plate 801 has a spring hanging rod 815 and a toggle rod 816. The spring hanging rod 815 is connected to a locking spring (not shown in the figure), and the locking spring pulls the locking plate toward the first end. The toggle lever 816 is used to receive external force, such as manually toggling the toggle lever 816 to move the locking plate toward the second end to unlock. The locking plate 801 is also provided with a plurality of second guide grooves 817. The second guide grooves 817 are long waist holes with a round hole at one end. Fig.21a , Figure 21b and Fig.21c As shown, a guide bolt 901 is installed on the sliding plate 202 of the driving mechanism, and the second guide groove 817 is installed on the guide bolt 901. The guide groove slides relative to the guide bolt, so that the locking plate 801 moves closer to the driving shaft 201 or away from the driving shaft. The size of the long waist hole of the second guide groove 817 matches the size of the rod of the guide bolt 901, and the size of the round hole at one end of the second guide groove 817 matches the size of the head of the guide bolt 901. The diameter of the round hole is larger than the diameter of the long waist hole, so that the guide bolt 901 will not fall out when it is located in the long waist hole.

[0096] Fig.19 The structure diagram of the unlocking component in the position locking device of the electric switch device according to one embodiment of the present invention is disclosed. The unlocking component 802 is adjacent to the locking component, and the unlocking component 802 is adjacent to the first end of the locking plate 801. The unlocking component 802 is an arc rod, and the first end (the right end in the figure) of the unlocking component has an axial hole 821, referring to Fig.21a , Figure 21b and Fig.21cAs shown, a rotating shaft 902 is installed on the sliding plate 202 of the driving mechanism, and the shaft hole 821 of the unlocking component is installed on the rotating shaft 902, and the unlocking component 802 can rotate around the rotating shaft 902. The second end (the left end in the figure) of the unlocking component 802 has a limit block 822. The second end of the unlocking component also has a spring hanging hole 823, and a limit spring (not shown in the figure) is connected to the spring hanging hole 823, and the limit spring pulls the unlocking component 802 to rotate upward. The middle part of the unlocking component 802 is a concave arc, and there is a limiting protrusion 824 in the middle position of the concave arc of the unlocking component. The unlocking component 802 rotates upward, and the limit block 822 lifts up and clamps the limit step 814 of the locking plate 801, so that the locking plate 801 can no longer approach the driving shaft 201, and the unlocking component limits the locking component. The unlocking component 802 rotates downward, and the limit block 822 is pressed down and disengaged from the limit step 814, and the unlocking component does not limit the locking component. It should be noted that in the illustrated embodiment, in order to match the structure of the locking component, the unlocking component is configured to rotate upward to limit and rotate downward to release. However, if the structure of the locking component changes, the limiting and releasing directions of the unlocking component may also change. From the perspective of the function of the unlocking component: the unlocking component rotates in the limiting direction, the limiting block catches the limiting step, the unlocking component limits the locking component, the unlocking component rotates in the releasing direction, the limiting block disengages from the limiting step, and the unlocking component does not restrict the locking component.

[0097] Fig.20a and Fig.20b A structural diagram of a positioning component in a position locking device of an electric switch device according to an embodiment of the present invention is disclosed. Fig.20aThe structure of the positioning component is disclosed. As shown in the figure, the positioning component 803 is an arc block. The positioning component 803 is installed on the indicator rod 701 of the position indicating device and rotates with the indicator rod. The positioning component 803 is the aforementioned locking block 704. Three positioning grooves 831 are distributed on the arc block. The three positioning grooves 831 correspond to the separation locking position, the test locking position and the connection locking position respectively. The positioning boss 813 of the locking plate is aligned with the positioning groove 831, the positioning boss enters the positioning groove, and the locking plate moves toward the drive shaft and locks the drive shaft. The positioning boss 813 is aligned with the rest of the arc block, the arc block supports the positioning boss, the locking plate is away from the drive shaft, and the drive shaft can rotate. As described above, the positioning component 803 will rotate with the indicator rod 701. When it rotates to the separation locking position, the test locking position and the connection locking position, the positioning boss 813 will enter the positioning groove 831 corresponding to the position, which allows the locking plate 801 to have space to move toward the first end. Under the action of the locking spring, the locking plate 801 moves toward the first end, and the locking boss 812 approaches the drive shaft 201 and is inserted into the locking groove on the drive shaft to lock the drive shaft. In this way, the positioning groove is used to allow the locking plate 801 to lock the drive shaft in the separation locking position, the test locking position and the connection locking position respectively. The positioning component also has an unlocking auxiliary member 804, which is the aforementioned locking auxiliary member 705, and is also installed on the indicator rod 701 and rotates with the indicator rod 701. The unlocking auxiliary member 804 and the positioning component 803 rotate synchronously. Fig.20b The structure of the unlocking auxiliary member is disclosed. As shown in the figure, the unlocking auxiliary member 804 is also an arc-shaped block, and the arc-shaped block has three auxiliary unlocking grooves 841, which correspond to the separation locking position, the test locking position and the connection locking position respectively. The middle part of the unlocking component 802 described above is a concave arc, and the arc surface of the concave arc matches the arc surface of the arc block of the unlocking auxiliary member 804. The shape and size of the limiting protrusion 824 in the middle position of the concave arc of the unlocking component matches the auxiliary unlocking groove 841 on the arc block.

[0098] Fig.21a , Figure 21b and Fig.21c The working principle diagram of the position locking device of an electric switch device according to an embodiment of the present invention is disclosed. The working process of the position locking device is as follows:

[0099] refer to Fig.21a, in three locking positions: separation locking position, test locking position and connection locking position. The positioning boss at the first end of the locking plate 801 enters the corresponding positioning groove on the positioning component 803. The limiting protrusion on the unlocking component 802 is aligned with the corresponding auxiliary unlocking groove on the unlocking auxiliary component 804. The bottom surface of the limiting step of the locking plate 801 abuts against the top of the limiting block of the unlocking component 802, and the unlocking component 802 is pressed down by the locking plate 801. At this time, the locking plate 801 moves toward the first end (right side) under the action of the locking spring, and the locking boss is stuck in the locking groove on the drive shaft 201, and the drive shaft 201 is locked and can no longer rotate.

[0100] refer to Figure 21b , an external force is applied to the toggle rod of the locking plate, so that the locking plate 801 moves toward the second end (left side), and the external force can be manually applied by the operator. The positioning boss of the locking plate 801 withdraws from the corresponding positioning groove on the positioning component 803, and the bottom surface of the limiting step of the locking plate 801 also releases the top of the limiting block of the unlocking component 802. Under the pull of the limiting spring, the unlocking component 802 rotates upward. Because the limiting protrusion is aligned with the auxiliary unlocking groove at this time, the limiting protrusion on the unlocking component 802 enters the corresponding auxiliary unlocking groove on the unlocking auxiliary component 804, and the unlocking component 802 has space to rotate upward. The unlocking auxiliary component 804 does not suppress the unlocking component from rotating upward. After the unlocking component rotates upward, the side of the limiting block supports the side of the limiting step of the locking plate, so that the unlocking component limits the locking plate and prevents the locking plate from moving toward the first end, which can prevent the locking plate from moving toward the first end again during the unlocking process and locking the drive shaft. After the locking plate 801 moves to the second end, the locking boss withdraws from the locking groove on the drive shaft 201, and the drive shaft is no longer restricted and can rotate. Shake the handle to continue to drive the drive shaft to rotate. Figure 21b As shown, under the action of the limit block of the unlocking component 802, the position of the locking plate 801 is limited to ensure that the driving shaft will not be locked.

[0101] refer to Fig.21c , in other positions other than the separation locking position, the test locking position and the connection locking position, that is, in the process of the sliding plate moving position. The arc surface portion of the arc block of the positioning component 803 bears against the positioning boss of the locking plate 801, referring to Fig.21c As shown, when the positioning boss is supported by the arc surface portion of the arc block, the locking boss is separated from the locking groove on the drive shaft 201, and the drive shaft can rotate. At the same time, the arc surface portion of the arc block of the unlocking auxiliary member 804 supports the limiting protrusion of the unlocking component 802, pressing the unlocking component 802 down, so that the unlocking component 802 will not interfere with the locking component in this state.

[0102] For the two forms of the inserted position, the insertion process form and the position-in-place form, the position-in-place form is particularly explained as follows: in the position-in-place form, the circuit breaker body has been moved into place, and the busbar is fully inserted into the electrical connection device, but the electrical connection device has not yet clamped the busbar, and it cannot be considered that the connection action is completed. The drive shaft still needs to rotate to drive the sliding plate to continue to move so that the electrical connection device can clamp the busbar. Therefore, the position-in-place form still belongs to the inserted position, and the positioning component has not rotated to the connection position at this position, and the locking member cannot lock the drive shaft and the positioning component. Only when the busbar is clamped in place by the electrical connection device will the positioning component rotate to the connection locking position, and at this time the locking boss and the positioning boss of the locking plate respectively clamp the drive shaft and the positioning component to achieve locking. Combined with the previous figures, in the position-in-place form, before the unlocking rod 236 of the second cantilever 232 is driven by the unlocking groove 223, the locking member does not perform locking. When the unlocking rod 236 of the second cantilever 232 is driven into position by the unlocking groove 223, it is formally switched from the inserted position to the connection clamping position. Only then does the locking member perform locking to ensure the unlocking and interlocking margin of the closing lock.

[0103] 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, ensuring the operability and safety of the electric switch device. The position locking device of the present invention has three locking positions: a separation locking position, a test locking position and a connection locking position. In the locked position, the position locking device locks the driving mechanism so that the driving mechanism cannot drive the circuit breaker body and the drawer device to move relative to each other. The position locking device is unlocked to exit the locked position, and the driving mechanism can drive the circuit breaker body and the drawer device to move relative to each other.

[0104] 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 locking 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 locking device is connected to the driving mechanism of the electric switch device, and the position locking device has three locking positions: a separation locking position, a test locking position and a connection locking position. In the locking position, the position locking device locks the driving mechanism so that the driving mechanism cannot drive the circuit breaker body and the drawer device to perform relative displacement. When the position locking device is unlocked and exits the locking position, the driving mechanism can drive the circuit breaker body and the drawer device to perform relative displacement. Wherein, the circuit breaker body is in the separated position, the position locking device is in the separated locking position and locks the driving mechanism; The position locking device is unlocked and exits the separation locking position, and the driving mechanism drives the circuit breaker body to move between the separation position and the test position; The circuit breaker body is in the test position, the position locking device is in the test locking position and locks the drive mechanism; The position locking device is unlocked to exit the test locking position, and the driving mechanism drives the circuit breaker body to move between the test device position and the inserted position; The circuit breaker body is in the inserted position, and the position locking device has not yet entered the connection locking position; The circuit breaker body and the drawer device are located at a connection clamping position, and the position locking device is at a connection locking position and locks the drive mechanism; and The position locking device comprises a locking component, which is a locking plate; a drive shaft hole is formed on the locking plate, the drive shaft passes through the drive shaft hole, the size of the drive shaft hole is larger than the outer diameter of the drive shaft, the drive shaft hole has a locking boss protruding inwardly, and the drive shaft has a locking groove, when the locking plate moves, the locking boss approaches the drive shaft and is inserted into the locking groove on the drive shaft, so that the drive shaft cannot rotate, when the locking plate moves, the locking boss exits the locking groove and moves away from the drive shaft, and the drive shaft can rotate; The position locking device comprises a positioning component, which has three positioning grooves. The positioning component is an arc block, which is mounted on the indicating rod of the position indicating device and rotates with the indicating rod. The three positioning grooves are distributed on the arc block. The first end of the locking plate has a protruding positioning boss, which is aligned with the positioning groove. The positioning boss enters the positioning groove, and the locking plate moves toward the drive shaft and locks the drive shaft. The positioning boss is aligned with the rest of the arc block, and the arc block supports the positioning boss. The locking plate is away from the drive shaft, and the drive shaft can rotate, wherein The positioning component rotates following the indicating rod, and the locking plate locks the driving shaft at the separation locking position, the test locking position and the connection locking position respectively.

2. The position locking device of the electric switch device according to claim 1, characterized in that: The circuit breaker body moves from the test position to the connection 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 locking device does not enter the connection locking 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 locking device still does not enter the connection locking 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 locking device of the electric switch device according to claim 2, characterized in that: The position locking device also includes an unlocking component, the locking component is unlocked and separated from the drive shaft, and the unlocking component limits the locking component to prevent the locking component from re-jamming the drive shaft; The locking component cooperates with the driving shaft in the driving mechanism, and the locking component can move close to the driving shaft and clamp the driving shaft so that the driving shaft cannot rotate, or the locking component can move away from the driving shaft so that the driving shaft can rotate; as well as The three positioning grooves correspond to the separation locking position, the test locking position and the connection locking position respectively. The positioning component enables the locking component to lock the drive shaft in the separation locking position, the test locking position and the connection locking position through the three positioning grooves.

4. The position locking device of the electric switch device according to claim 3, characterized in that: The unlocking component is adjacent to the locking component, the unlocking component is adjacent to the first end of the locking plate, the unlocking component is in the shape of an arc rod, the first end of the unlocking component has an axial hole, a rotating shaft is installed on the sliding plate of the driving mechanism, the axial hole of the unlocking component is installed on the rotating shaft, the unlocking component can rotate around the rotating shaft, and the second end of the unlocking component has a limit block; The first end of the locking plate has a limiting step. The unlocking component rotates in the limiting direction, the limiting block clamps the limiting step, the unlocking component limits the locking component, the unlocking component rotates in the releasing direction, the limiting block disengages from the limiting step, and the unlocking component does not restrict the locking component.

5. The position locking device of the electric switch device according to claim 4, characterized in that: The positioning component is provided with an unlocking auxiliary piece, which is an arc-shaped block, and the arc-shaped block is provided with three auxiliary unlocking grooves, which respectively correspond to a separation locking position, a test locking position and a connection locking position; The middle part of the unlocking component is a concave arc, and the arc surface of the concave arc matches the arc surface of the arc block of the unlocking auxiliary component. There is a limiting protrusion in the middle position of the concave arc of the unlocking component, and the shape and size of the limiting protrusion match the auxiliary unlocking groove on the arc block.

6. The position locking device of the electric switch device according to claim 5, characterized in that: The second end of the locking plate has a spring hanging rod and a toggle rod, the spring hanging rod is connected to a locking spring, and the locking spring pulls the locking plate toward the first end; The second end of the unlocking component is provided with a spring hanging hole, and a limit spring is connected to the spring hanging hole. The limit spring pulls the unlocking component to rotate upward.

7. The position locking device of the electric switch device according to claim 6, characterized in that: In the separation locking position, the test locking position and the connection locking position, the positioning boss at the first end of the locking plate enters the corresponding positioning groove on the positioning component, and the limiting convex block on the unlocking component is aligned with the corresponding auxiliary unlocking groove on the unlocking auxiliary component, the bottom surface of the limiting step of the locking plate abuts against the top of the limiting block of the unlocking component, and the unlocking component is pressed down; The locking member is then released from the locking mechanism and the locking member is engaged with the locking member so that the locking member is not engaged with the first end and the locking member is not engaged with the first end. At positions other than the separation locking position, the test locking position and the connection locking position, the arc block of the positioning component presses against the positioning boss of the locking plate, the locking plate moves away from the drive shaft, and the arc block of the unlocking auxiliary component presses against the limiting boss of the unlocking component to press the unlocking component down.

8. The position locking device of an electric switch device according to claim 1, characterized in that: A guide groove is provided on the locking plate, and the guide groove is a long waist hole with a round hole at one end. A guide bolt is installed on the sliding plate of the driving mechanism, and the guide groove is installed on the guide bolt. The guide groove slides relative to the guide bolt so that the locking plate moves closer to or away from the driving shaft. The size of the long waist hole of the guide groove matches the size of the rod of the guide bolt, and the size of the round hole at one end of the guide groove matches the size of the head of the guide bolt, and the diameter of the round hole is larger than the diameter of the long waist hole.

Images