Drawer seat door opening and closing structure and circuit breaker

Abstract

The drawer seat door opening and closing structure comprises a first gear and a safety door, the first gear is rotationally arranged and can drive the circuit breaker body to move back and forth in the drawer seat, and the first gear is an incomplete gear and is provided with transmission teeth; the safety door comprises a movable partition plate and a static partition plate, the movable partition plate is arranged on the static partition plate in an up-down moving mode, a sliding plate guide rail is arranged on the sliding plate, a rotating fulcrum is arranged on the drawer base, and the sliding plate guide rail is matched with the rotating fulcrum to enable the sliding plate to be movably arranged on the drawer base. The sliding plate can move along the sliding plate guide rail and can rotate around the rotating fulcrum. The circuit breaker comprises the drawer seat door opening and closing structure. According to the drawer seat door opening and closing structure and the circuit breaker, the first gear which drives the circuit breaker body to move in the drawer seat and is rotatably arranged directly drives the sliding plate to realize door opening and closing of the drawer seat, the number of transmission stages is small, the action is stable and reliable, the reliability of door opening and closing of the drawer seat is improved, the number of parts is greatly reduced, and the assembly is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, and particularly relates to a drawer base switch door structure and a circuit breaker. Background Art

[0002] Existing universal circuit breakers (hereinafter referred to as circuit breakers) are divided into drawer-type and fixed-type products. Among them, the drawer-type universal circuit breaker can be divided into a circuit breaker body and a drawer base. The circuit breaker body can be rocked in and out of the drawer base, which is convenient for debugging and maintenance of the circuit breaker. In the drawer base switch door structure, usually the moving direction of the circuit breaker body is the front-back direction, and the direction of the drawer base switch door is the up-down direction. This requires the actuating mechanism for driving the circuit breaker body to achieve transmission steering through multiple levers to drive the drawer base switch door. Most of the existing drawer base switch door structures adopt a multi-stage transmission structure, with a large number of parts and a complex structure, which is more troublesome to process and manufacture, and the production efficiency is relatively low. Summary of the Invention

[0003] The purpose of the utility model is to overcome at least one defect of the prior art, and provide a drawer base switch door structure and a circuit breaker.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The drawer base switch door structure includes a first gear and a safety door. The first gear is rotatably arranged and can drive the circuit breaker body to move back and forth in the drawer base. The first gear is an incomplete gear and is provided with transmission teeth. The safety door includes a moving partition and a static partition. The moving partition is arranged to move up and down on the static partition. It also includes a sliding plate and an elastic member for resetting the sliding plate. The sliding plate is provided with a sliding plate guide rail. The drawer base is provided with a rotation fulcrum. The sliding plate guide rail cooperates with the rotation fulcrum to enable the sliding plate to move on the drawer base. The sliding plate can move along the sliding plate guide rail and can rotate around the rotation fulcrum.

[0006] During the process of the circuit breaker switching from the connected state to the separated state, while the first gear drives the circuit breaker body to move, it also drives the sliding plate to store energy in the elastic member. During the process of the circuit breaker switching from the separated state to the test state, while the first gear drives the circuit breaker body to move, it rotates to make the sliding plate guide rail slide under the action of the elastic member to be rotationally matched with the rotation fulcrum, and the safety door remains in the closed state. During the process of the circuit breaker switching from the test state to the connected state, while the first gear continues to rotate to drive the circuit breaker body to continue moving, it makes the sliding plate rotate around the rotation fulcrum under the action of the elastic member, so that the sliding plate drives the moving partition to move and the safety door switches to the open state.

[0007] Optionally, the sliding plate is provided with a driven part of the sliding plate for driving cooperation with the driving part of the first gear, a mounting part for connecting with the elastic member, and a driving part of the sliding plate for driving cooperation with the supporting part of the moving partition plate.

[0008] Optionally, the driven part of the sliding plate has an abutting surface and a first arc surface connected thereto. The driving part of the first gear is arranged on the contour of the first gear and has a lifting surface and a second arc surface connected thereto. When the circuit breaker is in the separated state, the abutting surface abuts against the lifting surface. When the circuit breaker is in the test state, the first arc surface abuts against the second arc surface.

[0009] Optionally, the driving part of the sliding plate, the rotation fulcrum, the mounting part and the driven part of the sliding plate are arranged in sequence in the up-down direction.

[0010] Optionally, the sliding plate extends outwards to form a bent arm with a notch. The notch of the bent arm faces the first gear and is back to the moving partition plate. The end of the bent arm is an arc-shaped driving part of the sliding plate. On the side of the root of the bent arm back to the notch, there is an avoidance groove for avoiding the supporting part.

[0011] Optionally, a stop protrusion for resisting cooperation with the supporting part and for limiting the rotation stroke of the sliding plate is arranged on the driving part of the sliding plate.

[0012] Optionally, the elastic member is a spring, which has a fixed point for connecting with the drawer seat and a movable point for connecting with the sliding plate. In the up-down direction, the fixed point of the elastic member is located between the movable point of the elastic member and the rotation fulcrum. When the circuit breaker is in the separated state, in the front-back direction, the rotation fulcrum is located between the fixed point and the movable point of the elastic member. When the circuit breaker is in the connected state, in the front-back direction, the movable point of the elastic member is located between the fixed point and the rotation fulcrum of the elastic member.

[0013] Optionally, the sliding plate guide rail is a kidney-shaped hole that slides up and down in cooperation with the rotation fulcrum, and has an upper semi-circle and a lower semi-circle at the upper and lower ends. During the process of the circuit breaker switching from the separated state to the test state, the sliding plate guide rail slides down along the rotation fulcrum until the upper semi-circle rotates in cooperation with the rotation fulcrum. During the process of the circuit breaker switching from the test state to the connected state, the sliding plate rotates around the rotation fulcrum through the upper semi-circle to move the moving partition plate downwards.

[0014] Optionally, the sliding plate is provided with a limiting surface arranged in the up-down direction. The limiting surface slides in cooperation with the limiting fulcrum on the drawer seat in the up-down direction and is in limiting cooperation in the front-back direction. When the circuit breaker is in the separated state, in the up-down direction, the limiting fulcrum is located between the highest point and the lowest point of the limiting surface. When the circuit breaker is in the test state, the limiting fulcrum is higher than the highest point of the limiting surface.

[0015] Optionally, the slide plate is provided with a ramp surface connected to the limiting surface; when the circuit breaker is in the connected state, the ramp surface of the slide plate abuts against the limiting fulcrum.

[0016] Optionally, it further includes a base. The static partition is fixed to the front side of the base, the moving partition is stacked on the front side of the static partition. The static partition is provided with a supporting portion for supporting the moving partition, and the supporting portion of the moving partition is placed on the upper end of the supporting portion of the static partition.

[0017] Optionally, the static partition is provided with a mounting boss, and the mounting boss is a T-shaped block formed by connecting a horizontal block and a vertical block; the moving partition is provided with a mounting groove, and the mounting groove is a T-shaped groove formed by connecting a horizontal groove and a vertical groove. The horizontal block of the mounting boss passes through the horizontal groove of the mounting groove, and the vertical block of the mounting boss is vertically arranged with the vertical groove of the mounting groove and is in vertical sliding fit.

[0018] Optionally, the static partition is provided with a guide plate, and the guide plate is a flat plate structure with a width in the front-back direction and a length in the up-down direction; the moving partition is provided with a guide groove arranged in the up-down direction, and the guide plate is inserted into the guide groove.

[0019] Optionally, the guide plate is spaced from the side wall of the guide groove in the left-right direction, and the side surface of the guide plate is provided with a slider that is in up-down sliding fit with the side wall of the guide groove.

[0020] Optionally, the guide plate is provided with a limiting boss, and the limiting boss is in limiting cooperation with the side surface of the moving partition facing away from the static partition in the front-back direction.

[0021] Optionally, the side surface of the static partition facing away from the moving partition is provided with ribs for increasing the creepage distance.

[0022] A circuit breaker includes the drawer seat switch door structure according to any one of the above.

[0023] The drawer seat switch door structure and the circuit breaker of the present invention directly drive the slide plate through the first gear that rotates and drives the circuit breaker body to move in the drawer seat to realize the opening and closing of the drawer seat switch door. The number of transmission stages is small, the action is stable and reliable, the reliability of the drawer seat switch door is improved, and the number of parts is greatly reduced. Only one slide plate needs to be installed, and the assembly is convenient and fast.

[0024] In addition, the slide plate and the first gear are matched with a contact surface and a lifting surface, and the first arc surface and the second arc surface, so that the slide plate can smoothly switch from up-down sliding to rotation, and the slide plate is stably positioned in the separated and test states of the circuit breaker.

[0025] In addition, the arc design of the skateboard driving part enables the rotating skateboard to steadily lift the moving partition board, improving the stability of the drawer seat when opening the door. The setting of the stop protrusion enables the skateboard to be stably positioned in the circuit breaker connection state, improving the reliability of the drawer seat when opening the door.

[0026] In addition, the kidney-shaped hole skateboard guide rail cooperates with the rotation fulcrum of the round shaft, with a simple structure. It can not only guide the up and down sliding of the skateboard, but also enable the skateboard to be stably positioned in the circuit breaker separation and connection states. Moreover, the skateboard can be hung on the rotation fulcrum of the drawer seat side plate through the skateboard guide rail to assemble the skateboard and the drawer seat side plate into one body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural view of the circuit breaker of the present utility model;

[0028] Figure 2 is a view of the circuit breaker of the present utility model in the separated state;

[0029] Figure 3 is a perspective view of the circuit breaker of the present utility model in the separated state;

[0030] Figure 4 is a view of the circuit breaker of the present utility model in the test state;

[0031] Figure 5 is a perspective view of the circuit breaker of the present utility model in the test state;

[0032] Figure 6 is a view of the circuit breaker of the present utility model in the connected state;

[0033] Figure 7 is a perspective view of the circuit breaker of the present utility model in the connected state;

[0034] Figure 8 is a schematic structural view of the drawer seat side plate of the present utility model;

[0035] Figure 9 is a schematic structural view of the first gear of the present utility model;

[0036] Figure 10 is a schematic structural view of the skateboard of the present utility model;

[0037] Figure 11 is a schematic structural view of the moving partition board of the present utility model;

[0038] Figure 12 is a schematic structural view of the static partition board from one perspective of the present utility model;

[0039] Figure 13 is a schematic structural view of the static partition board from another perspective of the present utility model;

[0040] Figure 14 It is a schematic structural view of the base of the present utility model;

[0041] Figure 15 It is an assembly drawing of the base and the safety door of the present utility model.

[0042] First gear 2; Lifting surface 21; Second arc surface 22; Rotation center 23; Sliding groove 24; Transmission teeth 25; Avoidance notch 26; Slide plate 3; Slide plate driving part 31; Stop projection 311; Avoidance groove 32; Slide plate guide rail 33; Upper semi-circle 331; Lower semi-circle 332; First arc surface 34; Installation part 35; Slope surface 36; Limiting surface 37; Abutting surface 38; Safety door 4; Movable partition 41; Supporting part 411; Guide groove 412; Installation groove 413; Static partition 42; Supporting part 421; Installation boss 422; Guide plate 423; Slide block 424; Limiting boss 425; Rib 426; First fixing hole 427; Base 5; Card slot 51; Second fixing hole 52; Elastic part 6; Drawer seat side plate 7; Rotation fulcrum 71; Limiting fulcrum 72; Installation fulcrum 73; Circuit breaker body 8; Drawer seat bottom plate 9; Indicator 91. Specific embodiments

[0043] The following embodiments given in conjunction with the drawings further illustrate the specific embodiments of the drawer seat switch door structure and the circuit breaker of the present utility model. The drawer seat switch door structure and the circuit breaker of the present utility model are not limited to the descriptions of the following embodiments.

[0044] As Figure 1 shown, the circuit breaker of this embodiment includes a circuit breaker body 8 and a drawer seat. The circuit breaker body 8 and the drawer seat of this embodiment are both prior arts. The circuit breaker body 8 can be rocked in and out of the drawer seat. During the process of the circuit breaker body 8 being rocked into the drawer seat, it successively enters the separated state, the test state, and the connected state. The drawer seat generally includes a drawer seat bottom plate 9, two drawer seat side plates 7 vertically arranged on both sides of the drawer seat bottom plate 9, a drawer seat rear plate vertically arranged at the rear of the drawer seat bottom plate 9 and between the two drawer seat side plates 7, and a drawer seat top plate vertically arranged between the two drawer seat side plates 7 and opposite to the drawer seat bottom plate 9. An indicator 91 for indicating the separated state, the test state, and the connected state of the circuit breaker is provided on the drawer seat bottom plate 9. It should be noted that the orientation descriptions in this article are based on the height direction of the circuit breaker as the up and down direction, the moving direction of the circuit breaker body 8 as the front and rear direction, and the arrangement direction of the two drawer seat side plates 7 as the left and right direction.

[0045] The circuit breaker further includes an operating screw and a transmission mechanism. The circuit breaker body 8 is slidably mounted in the drawer base through a sliding assembly. The operating screw is in transmission connection with the sliding assembly through the transmission mechanism. When the circuit breaker body 8 is rocked in or out, the operating screw is rotated to drive the sliding assembly to move linearly, and then drive the circuit breaker body 8 to move linearly. It should be noted that the sliding assembly generally includes a sliding guide rail installed on the side plate 7 of the drawer base and located between the side plate 7 of the drawer base and the circuit breaker body 8, and a sliding plate slidably arranged front and back. The sliding plate is slidably arranged on the side plate 7 of the drawer base through the sliding guide rail, and the circuit breaker body 8 is hung on the sliding plate. The transmission mechanism generally includes a rack, a transmission shaft and a gear set. The rack is meshed and connected with the operating screw. The gear set includes several gears sequentially in transmission connection, wherein the gear at the first end is meshed and connected with the rack, and the gear at the last end is in transmission connection with the sliding plate of the sliding assembly. The structures and operating principles of the transmission mechanism and the sliding assembly are prior art and will not be elaborated here.

[0046] As Figures 2 - 8 shown, the drawer base switch door structure of this embodiment includes a first gear 2 and a safety door 4. In this embodiment, the gear at the last end in the gear set of the transmission mechanism is the first gear 2. The first gear 2 is rotatably arranged and can drive the circuit breaker body 8 to move back and forth in the drawer base through the sliding plate of the sliding assembly. As Figure 2 and Figure 9As shown, the first gear 2 is an incomplete gear, with transmission teeth 25 provided on a partial contour. The first gear 2 has a special-shaped contour and a rotation center 23. The special-shaped contour is similar to a dragon head shape, and is also called a dragon head gear. The rear side portion of the special-shaped contour of the first gear 2 is provided with the transmission teeth 25 for meshing with a gear adjacent to the first gear 2 in a transmission mechanism. The first gear 2 is provided with a sliding groove 24 extending from the front side to the rear side and located below the rotation center 23. The sliding groove 24 is curved, and a roller on a sliding plate is slidably arranged in the sliding groove 24 of the first gear 2; rotating an operating screw drives the first gear 2 to rotate, causing the sliding groove 24 of the first gear 2 to hook up or fall, thereby driving the roller on the sliding plate, and enabling the roller to drive the sliding plate to move backward or forward, so as to realize the backward movement (rocking into the drawer seat) or forward movement (rocking out of the drawer seat) of the circuit breaker body 8 hung on the sliding plate. This is the prior art and will not be elaborated here. The safety door 4 is installed in the drawer seat, between the rear plate of the drawer seat and the circuit breaker body 8. The safety door 4 includes a moving partition 41 and a static partition 42. The moving partition 41 is movably arranged up and down on the static partition 42. The drawer seat switch door structure further includes a sliding plate 3 and an elastic member 6 for resetting the sliding plate 3. The sliding plate 3 is connected to the moving partition 41. The sliding plate 3 is provided with a sliding plate guide rail 33. A rotating fulcrum 71 protruding in the left-right direction is provided on the side plate 7 of the drawer seat. The sliding plate guide rail 33 cooperates with the rotating fulcrum 71 to enable the sliding plate 3 to be movably arranged on the drawer seat. The sliding plate 3 can move along the sliding plate guide rail 33 and can rotate around the rotating fulcrum 71.

[0047] During the process of the circuit breaker switching from the connected state as shown in Figures 6 - 7 to the separated state as shown in Figures 2 - 3 , that is, when the transmission mechanism drives the sliding plate to drive the circuit breaker body 8 to rock out of the drawer seat away from the bridge-type contact on the drawer seat, while the first gear 2 directly or indirectly drives the sliding plate to drive the circuit breaker body 8 to move, the first gear 2 drives the sliding plate 3 to store energy in the elastic member 6; during the process of the circuit breaker switching from the separated state as shown in Figures 2 - 3 to the connected state as shown in Figures 6 - 7 , the elastic member 6 releases energy to make the sliding plate 3 move. Specifically, during the process of the circuit breaker switching from the separated state as shown in Figures 2 - 3 , the safety door 4 is in the closed state. During the process of the circuit breaker switching from the separated state as shown in Figures 2 - 3 to the test state as shown in Figures 4 - 5 , the first gear 2 rotates to drive the circuit breaker body 8 to move backward toward the rear of the bridge-type contact on the drawer seat. At the same time, the first gear 2 rotates to make the sliding plate guide rail 33 slide to be rotationally matched with the rotating fulcrum 71 under the action of the elastic member 6, and the safety door 4 remains in the closed state; during the process of the circuit breaker switching from the test state as shown in Figures 4 - 5 to the state as shown in Figures 6 - 7During the process of the connection state shown, the first gear 2 drives the circuit breaker body 8 to continue moving into the drawer base to approach the bridge contact on the drawer base. At the same time, the first gear 2 continues to rotate, causing the slide plate 3 to rotate around the rotation fulcrum 71 under the action of the elastic member 6. As a result, the slide plate 3 drives the moving partition 41 to move, switching the safety door 4 to the open state, enabling the conductive system of the circuit breaker body 8 to pass through the perforation and connect with the bridge contact on the drawer base. In this embodiment, when the circuit breaker switches from the test state as shown in Figures 4 - 5 to the connection state as shown in Figures 6 - 7 , the elastic member 6 drives the slide plate 3 to rotate around the rotation fulcrum 71 and reaches the position shown in Figures 6 - 7 . The bent arm on the contour of the first gear 2 that forms the sliding groove 24 and the avoidance notch 26 does not push the slide plate 3 to rotate. Obviously, as other embodiments, before reaching the connection state shown in Figures 6 - 7 , the bent arm of the first gear 2 can also be used to push the slide plate 3 to rotate, or when reaching the connection state shown in Figures 6 - 7 , the bent arm of the first gear 2 can also be used to limit the slide plate 3.

[0048] The drawer base door opening and closing structure and the circuit breaker of this embodiment directly drive the slide plate 3 through the first gear 2 that drives the movement of the circuit breaker body 8 in the drawer base and is rotatably arranged to achieve the opening and closing of the drawer base door. The number of transmission stages is small, the action is stable and reliable, the reliability of the drawer base door opening and closing is improved, and the number of parts is greatly reduced. Only one slide plate 3 needs to be installed, and the assembly is convenient and fast.

[0049] It should be noted that the technology of the open state and the closed state of the safety door 4 is prior art. Usually, perforations are provided on the moving partition 41 and the static partition 42. When the perforations on the moving partition 41 and the static partition 42 are aligned, the safety door 4 is in the open state, and the conductive system of the circuit breaker body 8 can pass through the perforation and connect with the bridge contact on the drawer base; when the perforations on the moving partition 41 and the static partition 42 are misaligned, the safety door 4 is in the closed state, and the conductive system of the circuit breaker body 8 cannot pass through the perforation and thus cannot connect with the bridge contact on the drawer base.

[0050] As shown in Figures 8 - 11 , in the drive structure between the slide plate 3, the first gear 2, and the moving partition 41 of this embodiment, the slide plate 3 is provided with a slide plate driven part for driving cooperation with the drive part of the first gear 2, a mounting part 35 for connecting with the elastic member 6, and a slide plate drive part 31 for driving cooperation with the support part 411 of the moving partition 41. The slide plate drive part 31, the rotation fulcrum 71, the mounting part 35, and the slide plate driven part are arranged in sequence in the vertical direction. Specifically, as shown in Figures 9 - 10As shown, the driven part of the slide plate has an abutting surface 38 and a first arc surface 34 connected thereto; the driving part of the first gear 2 is arranged on the contour of the first gear 2 and has a connected lifting surface 21 and a second arc surface 22. The lifting surface 21 is arranged at the upper end of the first gear 2 and is adjacent to the transmission teeth 25. On one side of the upper end of the first gear 2 away from the driving part, there is an avoidance notch 26 for avoiding the driven part of the slide plate. As Figures 2 - 3 shown, when the circuit breaker is in the separated state, the abutting surface 38 abuts on the lifting surface 21; as Figures 4 - 5 shown, when the circuit breaker is in the test state, the first arc surface 34 abuts on the second arc surface 22. The slide plate 3 and the first gear 2 are matched with each other by the abutting surface 38 and the lifting surface 21, and the first arc surface 34 and the second arc surface 22, so that the slide plate 3 can smoothly switch from sliding up and down to rotating, and the slide plate 3 is stably positioned in the separated and test states of the circuit breaker.

[0051] Preferably, as Figures 10 - 11 shown, the slide plate 3 extends outwards to form a bent arm with a notch. The bent arm is similar to a "︹" shape to form the notch. The notch of the bent arm faces the first gear 2 and backs away from the moving partition 41. The end of the bent arm is an arc-shaped slide plate driving part 31. The root of the bent arm is a straight structure arranged in the up and down direction. On one side of the root of the bent arm away from the notch, there is an avoidance groove 32 for avoiding the supporting part 411 of the moving partition 41. The arc design of the slide plate driving part 31 enables the rotating slide plate 3 to steadily lift the moving partition 41, improving the stability of opening the drawer seat. Further, a stop protrusion 311 that abuts against the supporting part 411 and is used to limit the rotation stroke of the slide plate 3 is arranged on the slide plate driving part 31; when the circuit breaker switches from the test state as Figures 4 - 5 shown to the connected state as Figures 6 - 7 shown, the slide plate 3 rotates until the stop protrusion 311 is abutted by the supporting part 411. The setting of the stop protrusion 311 enables the slide plate 3 to be stably positioned in the connected state of the circuit breaker, improving the reliability of opening the drawer seat. It should be noted that as other embodiments, the bent arm of the slide plate 3 can also be provided with multiple bends or no notch, as long as the slide plate driving part 31 is formed. The slide plate driving part 31 can be arc-shaped or other structures such as inclined planes. As other embodiments, the avoidance groove 32 and the stop protrusion 311 that abuts against the supporting part 411 can also be not provided, and it can abut against other components such as the static partition 42 or the side plate 7 of the drawer seat.

[0052] As Figure 2 shown, the elastic member 6 in this embodiment is a spring, which has a fixed point for connecting to the drawer seat and a movable point for connecting to the slide plate 3. The fixed point of the elastic member 6 is connected to the installation fulcrum 73 on the side plate 7 of the drawer seat, and the movable point of the elastic member 6 is connected to the installation part 35(Figure 10 ), the mounting fulcrum 73 and the mounting portion 35 may be structures such as holes, grooves, or protrusions; the elastic member 6 is inclined, and the fixed point of the elastic member 6 is located Figure 2 at a position that is right and slightly lower than the middle of the moving point, so that the elastic member 6 provides a downward and rightward acting force on the slide plate 3, which can cause the slide plate 3 to slide downward and can also cause the slide plate 3 to rotate clockwise around the rotation fulcrum 71. In the up and down direction, the fixed point of the elastic member 6 is located between the moving point of the elastic member 6 and the rotation fulcrum 71. As Figures 2 - 3 shown, when the circuit breaker is in the separated state, in the front and back direction, the rotation fulcrum 71 is located between the fixed point and the moving point of the elastic member 6; as Figures 6 - 7 shown when the circuit breaker is in the connected state, in the front and back direction, the moving point of the elastic member 6 is located between the fixed point of the elastic member 6 and the rotation fulcrum 71. Of course, the elastic member 6 can also be a torsion spring, a spring sheet, etc.

[0053] As Figure 10 shown, in the moving setting structure of the slide plate 3 in this embodiment, the slide plate guide rail 33 is a kidney-shaped hole that slidably cooperates with the rotation fulcrum 71 in the up and down direction, and has an upper semi-circle 331 and a lower semi-circle 332 at the upper and lower ends. As Figures 2 - 3 shown, when the circuit breaker is in the separated state, the rotation fulcrum 71 is within the lower semi-circle 332; when the circuit breaker switches from the separated state as Figures 2 - 3 shown to the test state as Figures 4 - 5 shown, the slide plate guide rail 33 slides downward along the rotation fulcrum 71 to rotatably cooperate with the upper semi-circle 331 and the rotation fulcrum 71; when the circuit breaker switches from the test state as Figures 4 - 5 shown to the connected state as Figures 6 - 7 shown, the slide plate 3 rotates around the rotation fulcrum 71 through the upper semi-circle 331 to move the moving partition 41 downward. The kidney-shaped hole slide plate guide rail 33 cooperates with the circular shaft rotation fulcrum 71, has a simple structure, can not only guide the up and down sliding of the slide plate 3, but also stably position the slide plate 3 in the separated and connected states of the circuit breaker. Moreover, the slide plate 3 can be hung on the rotation fulcrum 71 of the drawer seat side plate 7 through the slide plate guide rail 33 to assemble the slide plate 3 and the drawer seat side plate 7 into one body.

[0054] Furthermore, the slide plate 3 is provided with a limiting surface 37 arranged in the up and down direction, and the limiting surface 37 slidably cooperates with the limiting fulcrum 72 on the drawer seat side plate 7 in the up and down direction and is in limiting cooperation in the front and back direction; as Figures 2 - 3 shown, when the circuit breaker is in the separated state, in the up and down direction, the limiting fulcrum 72 is located between the highest point and the lowest point of the limiting surface 37; as Figures 4 - 5As shown in the figure, when the circuit breaker is in the test state, the limiting fulcrum 72 is higher than the highest point of the limiting surface 37. The limiting surface 37 cooperates with the limiting fulcrum 72 to limit the up and down sliding of the slide plate 3, so that the up and down sliding of the slide plate 3 is stable and reliable, and the structure is simple. The slide plate 3 is provided with a slope surface 36 connected to the limiting surface 37. As Figures 6 - 7 shown in the figure, when the circuit breaker is in the connected state, the slope surface 36 of the slide plate 3 abuts against the limiting fulcrum 72.

[0055] As Figure 14 and Figure 15 shown in the figure, the drawer seat switch door structure of this embodiment further includes a base 5. The base 5 in this embodiment is also the so-called drawer seat rear plate provided at the rear side of the drawer seat. The static partition 42 is fixed to the front side of the base 5. The moving partition 41 is stacked on the front side of the static partition 42. A rib 426 for increasing the creepage distance is provided on the side of the static partition 42 facing away from the moving partition 41. The static partition 42 is provided with a supporting portion 421 for supporting the moving partition 41. The supporting portion 411 of the moving partition 41 is placed on the upper end of the supporting portion 421 of the static partition 42 so that the safety door is kept in the closed state. A clamping groove 51 is provided on the base 5. The lower end of the static partition 42 is clamped into the clamping groove 51 of the base 5. The static partition 42 and the base 5 are also fastened by fixing screws. The first fixing hole 427 at the upper end of the static partition 42 and the second fixing hole 52 at the upper end of the base 5 are correspondingly arranged and cooperate with the fixing screws. Obviously, as other embodiments, the static partition 42 and the base 5 can be integrally formed, or it can be said that the base 5 can also be used as the static partition 42, which belongs to the protection scope of the present invention.

[0056] As Figures 11 - 13 shown in the figure, for the up and down sliding structure of the moving partition 41 in this embodiment, the static partition 42 is provided with a mounting boss 422. The mounting boss 422 is a T-shaped block formed by connecting a horizontal block and a vertical block. The moving partition 41 is provided with a mounting groove 413. The mounting groove 413 is a T-shaped groove formed by connecting a horizontal groove and a vertical groove. The horizontal block of the mounting boss 422 passes through the horizontal groove of the mounting groove 413. The vertical block of the mounting boss 422 is vertically arranged with the vertical groove of the mounting groove 413 and is in up and down sliding fit. The up and down sliding of the moving partition 41 and the static partition 42 is realized by the cooperation of the mounting groove 413 and the mounting boss 422. The structure is simple and the types of parts are reduced.

[0057] Optionally, the static partition plate 42 is provided with a guide plate 423, and the guide plate 423 is a flat plate structure with a width in the front-rear direction and a length in the up-down direction; the moving partition plate 41 is provided with a guide groove 412 arranged in the up-down direction, and the guide plate 423 is inserted into the guide groove 412. The arrangement of the guide plate 423 can increase the creepage distance. The thickness of the guide plate 423 is less than the width of the guide groove 412, so that the guide plate 423 is spaced from the side wall of the guide groove 412 in the left-right direction, and a slider 424 that is slidably matched with the side wall of the guide groove 412 in the up-down direction is arranged on the side surface of the guide plate 423. The side surface of the slider 424 for cooperating with the side wall of the guide groove 412 is preferably an arc surface. The slider 424 on the guide plate 423 is slidably matched with the side wall of the guide groove 412 to prevent the moving partition plate 41 from getting stuck when moving. A limiting boss 425 is arranged on the guide plate 423, and the limiting boss 425 is in limiting cooperation with the side surface of the moving partition plate 41 facing away from the static partition plate 42 in the front-rear direction to prevent the moving partition plate 41 from tilting up.

[0058] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when in use and commonly placed, and is only for the convenience of description, rather than indicating that the device or element referred to must have a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating relative importance.

[0059] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A drawer seat switch door structure, comprising a first gear (2) and a safety door (4), wherein the first gear (2) is rotatably arranged to drive a circuit breaker body (8) to move forward and backward in the drawer seat, and the first gear (2) is an incomplete gear and is provided with a transmission tooth (25); the safety door (4) comprises a moving partition (41) and a static partition (42), and the moving partition (41) is movably arranged on the static partition (42) up and down, and is characterized in that: It also comprises a slide plate (3) and an elastic member (6) for resetting the slide plate (3); the slide plate (3) is provided with a slide plate guide rail (33); the drawer seat is provided with a rotation fulcrum (71); the slide plate guide rail (33) cooperates with the rotation fulcrum (71) to enable the slide plate (3) to be moved and arranged on the drawer seat; the slide plate (3) can move along the slide plate guide rail (33) and can rotate around the rotation fulcrum (71); During the process of switching the circuit breaker from the connected state to the disconnected state, the first gear (2) drives the circuit breaker body (8) to move and drives the slide plate (3) to store energy in the elastic member (6); during the process of switching the circuit breaker from the disconnected state to the test state, the first gear (2) drives the circuit breaker body (8) to move and rotates so that the slide plate guide rail (33) slides to rotate with the rotation fulcrum (71) under the action of the elastic member (6), and the safety door (4) remains in the closed state; during the process of switching the circuit breaker from the test state to the connected state, the first gear (2) continues to rotate to drive the circuit breaker body (8) to continue to move and causes the slide plate (3) to rotate around the rotation fulcrum (71) under the action of the elastic member (6), so that the slide plate (3) drives the partition plate (41) to move and switches the safety door (4) to the open state.

2. The drawer seat switch door structure according to claim 1, characterized in that: The slide plate (3) is provided with a slide plate driven portion for drivingly cooperating with a driving portion of a first gear (2), a mounting portion (35) for connecting with an elastic member (6), and a slide plate driving portion (31) for drivingly cooperating with a supporting portion (411) of a movable partition plate (41).

3. The drawer seat switch door structure according to claim 2, characterized in that: The slide plate driven portion has a connected abutment surface (38) and a first arcuate surface (34); the driving portion of the first gear (2) is arranged on the contour of the first gear (2), and has a connected lifting surface (21) and a second arcuate surface (22); when the circuit breaker is in a separated state, the abutment surface (38) abuts against the lifting surface (21); when the circuit breaker is in a test state, the first arcuate surface (34) abuts against the second arcuate surface (22).

4. The drawer seat switch door structure according to claim 2, characterized in that: The slide plate driving part (31), the rotation fulcrum (71), the mounting part (35) and the slide plate driven part are arranged in sequence in the up and down directions.

5. The drawer seat switch door structure according to claim 2, characterized in that: The slide plate (3) extends outward to form a bending arm with a notch, the notch of the bending arm faces the first gear (2) and faces away from the movable partition (41), the end of the bending arm is an arc-shaped slide plate driving portion (31), and a side of the root of the bending arm facing away from the notch is provided with an avoidance groove (32) for avoiding the support portion (411).

6. The drawer seat switch door structure according to claim 5, characterized in that: The slide plate driving portion (31) is provided with a stop protrusion (311) which cooperates with the support portion (411) and is used to limit the rotational travel of the slide plate (3).

7. The drawer seat switch door structure according to claim 1, characterized in that: The elastic member (6) is a spring having a fixed point for connecting with the drawer seat and a movable point for connecting with the slide plate (3); the fixed point of the elastic member (6) is located between the movable point of the elastic member (6) and the rotation fulcrum (71) in the up-down direction; when the circuit breaker is in a separated state, the rotation fulcrum (71) is located between the fixed point and the movable point of the elastic member (6) in the front-to-back direction; when the circuit breaker is in a connected state, the movable point of the elastic member (6) is located between the fixed point and the rotation fulcrum (71) in the front-to-back direction.

8. The drawer seat switch door structure according to any one of claims 1 to 7, characterized in that: The slide rail (33) is a waist-shaped hole that slides up and down with the rotating fulcrum (71), and has an upper semicircle (331) and a lower semicircle (332) located at the upper and lower ends; when the circuit breaker is switched from the separated state to the test state, the slide rail (33) slides downward along the rotating fulcrum (71) to the upper semicircle (331) and rotates with the rotating fulcrum (71); when the circuit breaker is switched from the test state to the connected state, the slide rail (3) rotates around the rotating fulcrum (71) through the upper semicircle (331) to move the movable partition (41) downward.

9. The drawer seat switch door structure according to claim 8, characterized in that: The slide plate (3) is provided with a limit surface (37) arranged in the up-down direction, and the limit surface (37) and the limit support point (72) on the drawer seat are slidably matched in the up-down direction and are limited in the front-back direction; when the circuit breaker is in a separated state, the upper limit support point (72) in the up-down direction is located between the highest point and the lowest point of the limit surface (37); when the circuit breaker is in a test state, the limit support point (72) is higher than the highest point of the limit surface (37).

10. The drawer seat switch door structure according to claim 9, characterized in that: The slide plate (3) is provided with a slope surface (36) connected to the limit surface (37); when the circuit breaker is in a connected state, the slope surface (36) of the slide plate (3) abuts against the limit support point (72).

11. The drawer seat switch door structure according to claim 1, characterized in that: It also includes a base (5), the static partition (42) is fixed on the front side of the base (5), the dynamic partition (41) is stacked on the front side of the static partition (42), the static partition (42) is provided with a supporting portion (421) for supporting the dynamic partition (41), and the supporting portion (411) of the dynamic partition (41) is placed on the upper end of the supporting portion (421) of the static partition (42).

12. The drawer seat switch door structure according to claim 1 or 11, characterized in that: The static partition (42) is provided with a mounting boss (422), and the mounting boss (422) is a T-shaped block formed by connecting a transverse block and a longitudinal block; the dynamic partition (41) is provided with a mounting groove (413), and the mounting groove (413) is a T-shaped groove formed by connecting a transverse groove and a longitudinal groove, and the transverse block of the mounting boss (422) passes through the transverse groove of the mounting groove (413), and the longitudinal block of the mounting boss (422) is vertically arranged with the longitudinal groove of the mounting groove (413) and slides up and down to fit.

13. The drawer seat switch door structure according to claim 1 or 11, characterized in that: The static partition (42) is provided with a guide plate (423), and the guide plate (423) is a flat plate structure with a width along the front-to-back direction and a length along the up-down direction; the dynamic partition (41) is provided with a guide groove (412) arranged along the up-down direction, and the guide plate (423) is inserted into the guide groove (412).

14. The drawer seat switch door structure according to claim 13, characterized in that: The guide plate (423) is spaced apart from the side wall of the guide groove (412) in the left-right direction, and a sliding block (424) is provided on the side surface of the guide plate (423) and is slidably matched with the side wall of the guide groove (412) up and down.

15. The drawer seat switch door structure according to claim 13, characterized in that: The guide plate (423) is provided with a limiting boss (425), and the limiting boss (425) cooperates with the side surface of the moving partition (41) facing away from the static partition (42) to limit the position in the front-to-back direction.

16. The drawer seat switch door structure according to claim 1 or 11, characterized in that: A convex rib (426) for increasing the creepage distance is provided on the side of the static partition (42) facing away from the dynamic partition (41).

17. A circuit breaker, characterized in that: It comprises the drawer seat switch door structure as described in any one of claims 1-16.

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