An intelligent measuring plastic case circuit breaker

Abstract

The present invention relates to the technical field of circuit breakers, and discloses an intelligent measuring plastic case circuit breaker, which comprises a housing of the circuit breaker, a switch for controlling the closing and opening of the circuit breaker is arranged on the housing, a protective cover is arranged on the housing, an auxiliary part for assisting the switch in pushing is arranged on the protective cover, the auxiliary part is connected to the switch, the auxiliary part comprises an auxiliary block, and the auxiliary block is sleeved on the switch; the present invention effectively solves the problem that when the intelligent measuring plastic case circuit breaker is toggled, a user needs to exert a large force to toggle the switch, and the switch often slips out of the hand in the middle of toggling due to large resistance during the toggling process, which easily causes aggravated wear of parts and components in the long run, shortens the service life of the equipment, and the circuit breaker cannot be closed or disconnected in time, which also affects the normal operation of the entire power system.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an intelligent measuring plastic case circuit breaker. Background Art

[0002] With the continuous improvement of industrial automation and information technology, the power industry has an increasing demand for power equipment, especially in the fields of smart grid, new energy and industrial production lines, which put forward higher requirements for the intelligence, efficiency and reliability of power equipment. As an important component of low-voltage electrical appliances, plastic case circuit breakers are widely used in various power systems, and undertake key tasks such as protecting circuits, preventing overloads and short circuits.

[0003] Among them, the intelligent measuring plastic case circuit breaker is a circuit breaker product that integrates advanced technologies such as high-precision data acquisition, Internet of Things, edge computing, and big data platform. It can not only realize the circuit protection function of traditional circuit breakers, but also has significant advantages such as high-precision measurement, intelligent control, and remote monitoring and diagnosis. It shows broad application prospects in user-side power distribution facilities and energy consumption monitoring scenarios such as smart grids, buildings, parks, factories, hospitals, enterprises and institutions.

[0004] At present, when the intelligent measuring plastic case circuit breaker is toggling the switch, because it usually contains mechanical structures such as cams inside, these structures play a key role in the operation of the circuit breaker. When the switch is toggled, it is necessary to overcome the resistance of components such as the cam, especially when the switch is close to or exceeds the protruding point of the cam, the resistance will be relatively large, so the user needs to use greater force to toggle the switch of the circuit breaker. During the toggling process, due to the large resistance, the switch often slips out of the hand halfway through the toggle. The sudden rebound may cause an impact on the mechanical structure inside the circuit breaker, which may cause increased wear of components in the long run, shorten the service life of the equipment, and the circuit breaker cannot be closed or disconnected in time, which will also affect the normal operation of the entire power system. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that when the user is turning the switch of the intelligent measuring plastic case circuit breaker mentioned in the above background technology, the user needs to use a large force to turn the switch. During the turning process, due to the large resistance, the switch often slips out of the hand when it is halfway turned. In the long run, it is easy to cause increased wear of parts and shorten the service life of the equipment. In addition, the circuit breaker cannot be closed or opened in time, which will also affect the normal operation of the entire power system.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An intelligent measuring plastic case circuit breaker comprises a housing of the circuit breaker, the housing is provided with a switch for controlling the closing and opening of the circuit breaker, the housing is provided with a protective cover, the protective cover is provided with an auxiliary part for assisting in pushing the switch, the auxiliary part is connected to the switch, the auxiliary part comprises an auxiliary block, and the auxiliary block is sleeved on the switch.

[0008] Preferably, the auxiliary component includes an arc plate 1 and an arc plate 2, the arc plate 1 is arranged on the extended end of the switch, the arc plate 2 is movably arranged on the protective cover, a control component is arranged inside the protective cover, and the arc plate 1 and the arc plate 2 are transmission connected through the control component. The auxiliary component can reduce the force required for the user to flip the switch, and it is more convenient for the user to flip the switch over the protruding point of the cam, so that the user can quickly close or disconnect the circuit breaker, reducing the force required for the user to flip the switch.

[0009] Preferably, the switch includes a toggle end, the switch is provided with an extension end, the arc plate 1 is provided on the extension end, the arc plate 1 is coaxially arranged with the switch, the arc plate 1 is coaxially arranged with the switch to ensure that the arc plate 1 and the switch move at synchronized angles when rotating, the shell includes an inner shell and an outer shell, the inner shell is provided with a movable slot hole for the extension end and the arc plate 1 to rotate, the outer shell is provided with a fixing hole, and the protective cover is provided in the fixing hole.

[0010] Preferably, the auxiliary block is provided with a through hole, and the auxiliary block is sleeved on the toggle end through the through hole. The auxiliary block is provided with a connecting plate, and the auxiliary block is connected to the movable plate through the connecting plate. There is a gap between the upper and lower sides of the through hole on the auxiliary block and the upper and lower sides of the toggle end of the switch. When the user toggles the switch, the auxiliary block can give it an additional thrust to assist the user in toggling the switch.

[0011] Preferably, the control member includes a rotating rod 1 and a rotating rod 2, the rotating rod 1 is provided with a transmission gear, the rotating rod 1 and the rotating rod 2 are connected to each other through a speed change gear set, the rotating rod 2 is also provided with a one-way transmission member 1 and a one-way transmission member 2, the one-way transmission member 1 and the one-way transmission member 2 are both connected to the movable plate, and the speed change gear set can make the angle of movement of the movable plate greater than the angle of rotation of the switch when in use, and can provide a continuous thrust to the switch.

[0012] Preferably, the one-way transmission component includes a ratchet and an arc-shaped plate. A plurality of ratchet teeth cooperating with the ratchet are equidistantly arranged on the arc-shaped plate. A moving rod and a spring are arranged on the side of the arc-shaped plate away from the ratchet teeth. The spring set is arranged on the outside of the moving rod. The ratchet and the ratchet teeth on the arc-shaped plate can only cooperate in one direction.

[0013] Preferably, two moving grooves are provided on the moving plate, and moving holes are provided in the moving grooves. The arc plate 2 on the one-way transmission member 1 and the one-way transmission member 2 are respectively located in the two moving grooves, and the moving rods on the one-way transmission member 1 and the one-way transmission member 2 are respectively located in the moving holes in the two moving grooves. The end of the spring 1 away from the arc plate 2 is connected to the moving plate, and the spring 1 can make the arc plate 2 automatically reset after moving into the moving groove.

[0014] Preferably, the two movable grooves are respectively opened on the movable plate in an alternating manner up and down, and the tooth direction of the ratchet and ratchet on the one-way transmission member one is opposite to the tooth direction of the ratchet and ratchet on the one-way transmission member two. When the switch is toggled in different directions up and down, the movable plate can be driven to move by the one-way transmission member one and the one-way transmission member two respectively.

[0015] Preferably, the protective cover is provided with an installation cavity and a slide groove, the rotating rod one and the rotating rod two are both rotatably arranged in the protective cover installation cavity, and sliding ends are provided on both sides of the movable plate. The sliding ends are in the slide groove, and the sliding ends can slide in the slide groove, so that the moving process of the movable plate is made more stable through the sliding ends.

[0016] Preferably, a movable hole is provided on the connecting plate, a connecting end is provided on the auxiliary block, guide rods and spring 2 are provided on the upper and lower sides of the connecting end, the spring 2 is sleeved on the outside of the guide rod, and the two ends of the spring 2 are respectively connected to the auxiliary block and the connecting plate, and two guide holes corresponding to the movable hole are opened on the connecting plate, the connecting end is in the movable hole, and the guide rod is in the guide hole. When the connecting plate moves, it will first squeeze the spring 2, and then push the auxiliary block to move with a thrust. When the switch passes over the cam protrusion, the spring 2 can absorb and relieve the extra force, so as to avoid the auxiliary block having a large thrust on the switch after the switch passes over the cam protrusion.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The auxiliary member provided in the present invention enables the user to have an auxiliary force to push the switch in the same direction when toggling the switch, thereby reducing the force required by the user to toggle the switch, and making it easier for the user to toggle the switch over the cam protruding point position, so that the user can quickly close or disconnect the circuit breaker, effectively avoiding the phenomenon of frequently slipping out of the hand when toggling the switch halfway, thereby protecting the circuit breaker, and closing and disconnecting the circuit breaker in time, thereby preventing the normal operation of the entire power system from being affected;

[0019] The one-way transmission member 1 and the one-way transmission member 2 are set, so that when the switch is toggled up and down, the movement of the movable plate is controlled by the one-way transmission member 1 and the one-way transmission member 2 respectively, so that when the switch passes the protruding point of the internal cam, the spring inside the circuit breaker releases the stored energy to pull the switch to the specified position instantly, and when the switch is subsequently pulled to move by the spring of the circuit breaker itself, because the ratchet wheel in the one-way transmission member 1 and the arc plate 2 have already completed the cooperation, the subsequent movement of the switch will no longer continue to provide driving force through the auxiliary block, thereby providing a staged auxiliary thrust to the switch, avoiding a large thrust on the switch after it reaches the specified position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a separation view of the outer shell and the inner shell of the present invention;

[0023] Figure 3 This is a view showing the outer housing and the switch being separated from the inner housing of the present invention;

[0024] Figure 4 This is a view of the protective cover and the auxiliary parts of the present invention being separated;

[0025] Figure 5 An exploded view of the auxiliary component structure of the present invention;

[0026] Figure 6 A structural view of a one-way transmission member of the present invention;

[0027] Figure 7 It is a position view of the mobile slot of the present invention;

[0028] Figure 8 This is a separate view of the moving plate and the auxiliary block of the present invention.

[0029] Explanation of the figure numbers: 1. Shell; 11. Inner shell; 111. Moving slot; 12. Outer shell; 2. Switch; 21. Toggle end; 22. Extension end; 3. Auxiliary part; 31. Arc plate 1; 32. Control part; 321. Turn rod 1; 322. Transmission gear; 323. Turn rod 2; 324. Speed ​​gear set; 325. One-way transmission part 1; 3251. Ratchet; 3252. Arc plate 2; 3253. Ratchet; 3254. Moving rod; 3255. Spring 1; 326. One-way transmission part 2; 33. Moving plate; 331. Sliding end; 332. Moving slot; 34. Connecting plate; 341. Movable hole; 342. Guide hole; 35. Auxiliary block; 351. Guide rod; 352. Spring 2; 4. Protective cover; 41. Mounting cavity; 42. Slide groove. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings.

[0031] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be used for other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0032] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0033] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity. Example

[0034] See also Figure 1-Figure 8, an intelligent measuring plastic case circuit breaker, which includes a housing 1 of the circuit breaker, a switch 2 for controlling the closing and opening of the circuit breaker is arranged on the housing 1, a protective cover 4 is arranged on the housing 1, an auxiliary part 3 for assisting the switch 2 in pushing is arranged on the protective cover 4, the auxiliary part 3 is connected to the switch 2, the auxiliary part 3 includes an auxiliary block 35, the auxiliary block 35 is sleeved on the switch 2, the auxiliary part 3 includes an arc plate 1 31 and an arc plate 2 3252, the arc plate 1 31 is arranged on the extended end 22 of the switch 2, the arc plate 2 3252 is movably arranged on the protective cover 4, a control part 32 is arranged in the protective cover 4, the arc plate 1 31 and the arc plate 2 3252 are connected by the control part 32 for transmission, the auxiliary part 3 can reduce the force required by the user to toggle the switch 2, and it is more convenient for the user to toggle the switch 2 over the cam protrusion point position, so that the user can quickly close or disconnect the circuit breaker, reducing the force required by the user to toggle the switch 2.

[0035] The switch 2 includes a toggle end 21, an extension end 22 is provided on the switch 2, an arc plate 31 is provided on the extension end 22, the arc plate 31 is coaxially arranged with the switch 2, the arc plate 31 and the switch 2 are coaxially arranged to ensure that the arc plate 31 and the switch 2 move at synchronized angles when rotating, the housing 1 includes an inner housing 11 and an outer housing 12, the inner housing 11 is provided with a movable slot 111 for the extension end 22 and the arc plate 31 to rotate, the outer housing 12 is provided with a fixing hole, and the protective cover 4 is arranged in the fixing hole.

[0036] A through hole is provided on the auxiliary block 35, and the auxiliary block 35 is sleeved on the toggle end 21 through the through hole. A connecting plate 34 is provided on the auxiliary block 35, and the auxiliary block 35 is connected to the movable plate 33 through the connecting plate 34. There is a gap between the upper and lower sides of the through hole on the auxiliary block 35 and the upper and lower sides of the toggle end 21 of the switch 2. When the user toggles the switch 2, the auxiliary block 35 can give it an additional thrust to assist the user in toggling the switch 2.

[0037] Furthermore, the control member 32 includes a rotating rod 1 321 and a rotating rod 2 323. The rotating rod 1 321 is provided with a transmission gear 322. The rotating rod 1 321 and the rotating rod 2 323 are connected to each other through a transmission gear set 324. The rotating rod 2 323 is also provided with a one-way transmission member 1 325 and a one-way transmission member 2 326. The one-way transmission member 1 325 and the one-way transmission member 2 326 are both connected to the movable plate 33. When in use, the speed gear set 324 can make the angle of movement of the movable plate 33 greater than the rotation angle of the switch 2, and can provide a continuous thrust to the switch 2.

[0038] Furthermore, the one-way transmission member 325 includes a ratchet 3251 and an arc plate 3252. A plurality of ratchet teeth 3253 cooperating with the ratchet 3251 are equidistantly arranged on the arc plate 3252. A moving rod 3254 and a spring 3255 are arranged on the side of the arc plate 3252 away from the ratchet teeth 3253. The spring 3255 is sleeved on the outside of the moving rod 3254. The ratchet 3251 and the ratchet teeth 3253 on the arc plate 3252 can only cooperate in one direction.

[0039] Two moving grooves 332 are provided on the moving plate 33, and moving holes are provided in the moving grooves 332. The arc plate 2 3252 on the one-way transmission member 1 325 and the one-way transmission member 2 326 are respectively located in the two moving grooves 332, and the moving rods 3254 on the one-way transmission member 1 325 and the one-way transmission member 2 326 are respectively located in the moving holes in the two moving grooves 332. The spring 1 3255 is connected to the moving plate 33 at one end away from the arc plate 2 3252. The spring 1 3255 can make the arc plate 2 3252 automatically reset after moving into the moving groove 332.

[0040] It should be noted that the two moving grooves 332 are respectively opened on the moving plate 33 in an alternating manner up and down, and the tooth directions of the ratchet 3251 and the ratchet 3253 on the one-way transmission member 1 325 are opposite to the tooth directions of the ratchet 3251 and the ratchet 3253 on the one-way transmission member 2 326. When the switch 2 is toggled in different directions up and down, the moving plate 33 can be driven to move by the one-way transmission member 1 325 and the one-way transmission member 2 326 respectively.

[0041] It should be supplemented that a mounting cavity 41 and a slide groove 42 are provided on the protective cover 4, and the rotating rod 1 321 and the rotating rod 2 323 are both rotatably arranged in the mounting cavity 41 of the protective cover 4. Sliding ends 331 are provided on both sides of the movable plate 33, and the sliding ends 331 are in the slide groove 42. The sliding ends 331 can slide in the slide groove 42, and the sliding ends 331 make the moving process of the movable plate 33 more stable.

[0042] Among them, a movable hole 341 is provided on the connecting plate 34, a connecting end is provided on the auxiliary block 35, and guide rods 351 and spring 2 352 are provided on the upper and lower sides of the connecting end. The spring 2 352 is sleeved on the outside of the guide rod 351, and the two ends of the spring 2 352 are respectively connected to the auxiliary block 35 and the connecting plate 34. Two guide holes 342 corresponding to the movable hole 341 are opened on the connecting plate 34, and the connecting end is in the movable hole 341, and the guide rod 351 is in the guide hole 342. When the connecting plate 34 moves, it will first squeeze the spring 2 352, and then push the auxiliary block 35 to move with a thrust. When the switch 2 passes over the cam protrusion, the spring 2 352 can absorb and relieve the extra force, so as to avoid the auxiliary block 35 having a large thrust on the switch 2 after the switch 2 passes over the cam protrusion.

[0043] When the present invention is in use, when the user toggles the switch 2, the switch 2 rotates upward or downward. When the switch 2 rotates, it drives the arc plate 1 31 to rotate together. When the arc plate 1 31 rotates, it drives the meshing transmission gear 322 to rotate, and then drives the rotating rod 1 321 to rotate. When the rotating rod 1 321 rotates, it drives the speed change gear set 324 to run, and then drives the rotating rod 2 323 to rotate. The rotating rod 2 323 drives the ratchet 3251 to rotate synchronously with it. When the ratchet 3251 rotates, it drives the arc plate 2 3252 that cooperates with it to move. When the arc plate 2 3252 moves, it drives the moving plate 33 to move. The moving plate 33 passes through the auxiliary block 3 5 Press the toggle end 21 in the same direction as the switch 2 rotates, so that when the user toggles the switch 2 through the toggle end 21, the auxiliary block 35 can have an auxiliary force to push the switch 2 in the same direction, which can reduce the force required by the user to toggle the switch 2, and make it easier for the user to toggle the switch 2 over the cam protrusion point position, so that the user can quickly close or disconnect the circuit breaker, reducing the force required by the user to toggle the switch 2, and effectively avoiding the phenomenon of frequent hand slipping in the middle of toggling, thereby protecting the circuit breaker, and closing and disconnecting the circuit breaker in time, which can prevent the normal operation of the entire power system from being affected;

[0044] When the switch 2 is toggled upward, the ratchet 3251 in the one-way transmission member 1 325 drives the arc plate 2 3252 matched therewith to move, and then through the above method, the auxiliary block 35 is pushed upward, and there is an auxiliary force that continuously pushes upward. When the ratchet 3251 in the one-way transmission member 1 325 drives the arc plate 2 3252 matched therewith to complete the movement, the switch 2 just passes the protruding point position of the internal cam, and then relies on the circuit breaker's own spring to release the stored energy to pull the switch 2 to the specified position instantly. When the switch 2 is subsequently pulled to move by the circuit breaker's own spring, because the ratchet 3251 in the one-way transmission member 1 325 and the arc plate 2 3252 have completed the cooperation, the subsequent movement of the switch 2 will no longer be continuously driven by the auxiliary block 35. At the same time, when the switch 2 moves subsequently, the arc plate 2 326 in the one-way transmission member 2 The arc plate 2 3252 will contact with the ratchet 3251 matched with it, but at this time, the ratchet 3253 in the one-way transmission member 2 326 will not mesh with the ratchet 3253 on the arc plate 2 3252, and the ratchet 3251 in the one-way transmission member 2 326 will move the ratchet 3253 in the direction of the spring 1 3255 connected to itself, so that the arc plate 2 3252 in the one-way transmission member 2 326 passes through the ratchet 3251. When the switch 2 moves upward to the specified position, the ratchet 3251 in the one-way transmission member 2 326 meshes with the ratchet 3253 on the arc plate 2 3252. When the switch 2 is toggled downward, the movable plate 33 is driven to move through the one-way transmission member 2 326. When the switch 2 is toggled up and down, the movement of the movable plate 33 is controlled by the one-way transmission member 1 325 and the one-way transmission member 2 326 respectively.

[0045] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. An intelligent measuring plastic case circuit breaker, characterized in that: It comprises a housing (1) of a circuit breaker, wherein a switch (2) for controlling the closing and opening of the circuit breaker is provided on the housing (1); The housing (1) is provided with a protective cover (4), the protective cover (4) is provided with an auxiliary component (3) for assisting in pushing the switch (2), the auxiliary component (3) is connected to the switch (2), the auxiliary component (3) comprises an auxiliary block (35), and the auxiliary block (35) is sleeved on the switch (2); The auxiliary component (3) comprises an arc-shaped plate 1 (31) and an arc-shaped plate 2 (3252), wherein the arc-shaped plate 1 (31) is arranged on the extended end (22) of the switch (2), and the arc-shaped plate 2 (3252) is movably arranged on the protective cover (4), and a control component (32) is arranged in the protective cover (4), and the arc-shaped plate 1 (31) and the arc-shaped plate 2 (3252) are connected in a transmission manner via the control component (32); The switch (2) comprises a toggle end (21), the switch (2) is provided with an extension end (22), the arc-shaped plate 1 (31) is provided on the extension end (22), and the arc-shaped plate 1 (31) is provided coaxially with the switch (2); The auxiliary block (35) is provided with a through hole, the auxiliary block (35) is sleeved on the toggle end (21) through the through hole, the auxiliary block (35) is provided with a connecting plate (34), the auxiliary block (35) is connected to the movable plate (33) through the connecting plate (34), and there is a gap between the upper and lower sides of the through hole on the auxiliary block (35) and the upper and lower sides of the toggle end (21) of the switch (2); The control member (32) comprises a rotating rod 1 (321) and a rotating rod 2 (323); a transmission gear (322) is sleeved on the rotating rod 1 (321); the rotating rod 1 (321) and the rotating rod 2 (323) are connected to each other via a transmission gear set (324); the rotating rod 2 (323) is also provided with a one-way transmission member 1 (325) and a one-way transmission member 2 (326); the one-way transmission member 1 (325) and the one-way transmission member 2 (326) are both connected to the moving plate (33); The one-way transmission member 1 (325) comprises a ratchet (3251) and an arc-shaped plate 2 (3252), wherein the arc-shaped plate 2 (3252) is provided with a plurality of ratchet teeth (3253) which cooperate with the ratchet (3251) at equal intervals, and a moving rod (3254) and a spring 1 (3255) are provided on the side of the arc-shaped plate 2 (3252) away from the ratchet teeth (3253), wherein the spring 1 (3255) is sleeved on the outside of the moving rod (3254).

2. The intelligent measuring plastic case circuit breaker according to claim 1, characterized in that: The movable plate (33) is provided with two movable grooves (332), wherein the movable grooves (332) are provided with movable holes, wherein the arc-shaped plate 2 (3252) on the one-way transmission member 1 (325) and the one-way transmission member 2 (326) are respectively located in the two movable grooves (332), wherein the movable rods (3254) on the one-way transmission member 1 (325) and the one-way transmission member 2 (326) are respectively located in the movable holes in the two movable grooves (332), and the end of the spring 1 (3255) away from the arc-shaped plate 2 (3252) is connected to the movable plate (33).

3. The intelligent measuring plastic case circuit breaker according to claim 2, characterized in that: The two movable grooves (332) are respectively arranged on the movable plate (33) in an upper and lower staggered manner, and the tooth directions of the ratchet wheel (3251) and the ratchet teeth (3253) on the one-way transmission member (325) are opposite to the tooth directions of the ratchet wheel (3251) and the ratchet teeth (3253) on the one-way transmission member (326).

4. The intelligent measuring plastic case circuit breaker according to claim 3, characterized in that: The protective cover (4) is provided with a mounting cavity (41) and a slide groove (42); the first rotating rod (321) and the second rotating rod (323) are both rotatably disposed in the mounting cavity (41) of the protective cover (4); sliding ends (331) are provided on both sides of the movable plate (33); and the sliding ends (331) are located in the slide groove (42).

5. The intelligent measuring plastic case circuit breaker according to claim 4, characterized in that: The connecting plate (34) is provided with a movable hole (341), the auxiliary block (35) is provided with a connecting end, the connecting end is provided with a guide rod (351) and a second spring (352) on both sides thereof, the second spring (352) is sleeved on the outside of the guide rod (351), the two ends of the second spring (352) are respectively connected to the auxiliary block (35) and the connecting plate (34), the connecting plate (34) is provided with two guide holes (342) corresponding to the movable hole (341), the connecting end is located in the movable hole (341), and the guide rod (351) is located in the guide hole (342).

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