Operating mechanism of circuit breaker and circuit breaker

Abstract

The present invention relates to the technical field of low-voltage electrical appliances, and specifically discloses an operating mechanism of a circuit breaker and a circuit breaker. The closing-ready indicating members in the operating mechanism of the circuit breaker provided by the present invention are all arranged outside the side plates of the frame, which facilitates the installation and replacement of the closing-ready indicating members, reduces the maintenance cost, and can also selectively install the closing-ready indicating members, enabling the circuit breaker to have a function selection performance and meet the diversified requirements of the circuit breaker; the first linkage part of the closing-ready indicating member is directly linked with the energy storage unit, the second linkage part is directly linked with the closing and opening transmission unit, and the third connecting part is directly linked with the tripping transmission unit, which simplifies the connection structure between the closing-ready indicating member and the energy storage unit, the closing and opening transmission unit, and the tripping transmission unit, facilitating the operator to accurately judge whether the circuit breaker is in a closable state and avoiding ineffective closing.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and particularly to an operating mechanism of a circuit breaker and a circuit breaker. Background Art

[0002] As an electrical device for controlling the on-off of a transmission line, the performance of a circuit breaker directly affects the safety of downstream electrical devices. Any failure of the circuit breaker may cause huge economic losses or even casualties. The operating mechanism is the executive component of the circuit breaker and the core of the entire circuit breaker, responsible for providing the energy required for the opening and closing operations of the circuit breaker and performing the opening and closing operations.

[0003] The circuit breaker includes at least a pair of contacts and an operating mechanism for closing and separating the contacts, and the operating mechanism can be in multiple different states. To display the state of the operating mechanism, a component for indicating the state is also provided on the operating mechanism. The common state indicators of the operating mechanism include closing and opening indicators as well as energy storage and energy release indicators. When the state indicator component of the circuit breaker shows that the circuit breaker is in the open and energy storage states, it is generally considered that the circuit breaker is in a state where it can be closed. However, this is not the case in fact. When the tripping iron core of the under-voltage release in the circuit breaker is in the pushed-out position, the circuit voltage is lower than the normal allowable closing voltage range, and at this time the circuit breaker still cannot be closed. Therefore, the circuit breaker must meet the following three conditions to be closed: 1. The operating mechanism must be energized; 2. The circuit breaker must be in the off (i.e., open) state; 3. The tripping iron core of the under-voltage release must be in the retracted position.

[0004] In order to facilitate the operator to accurately judge whether the circuit breaker is in a closable state and avoid ineffective closing, a closable state indicating device of the circuit breaker is provided on the operating mechanism. However, the connection structure between the closable state indicating device of the prior art and the operating mechanism is complex, which is not convenient for installation and replacement, and increases the maintenance cost.

[0005] Therefore, there is an urgent need to provide an operating mechanism of a circuit breaker and a circuit breaker to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide an operating mechanism of a circuit breaker and a circuit breaker, which are convenient for installing and replacing the closing-ready indicator, reduce the maintenance cost, and also simplify the installation structure of the closing-ready indicator, so that the operator can accurately judge whether the circuit breaker is in a closable state and avoid ineffective closing.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] On the one hand, an operating mechanism of a circuit breaker is provided, including:

[0009] A frame, within which an energy storage unit, a closing and opening transmission unit, and a tripping transmission unit are provided;

[0010] A closing ready indicator, rotatably arranged outside the side plate of the frame. The closing ready indicator includes an indicator body, on which a first linkage part capable of being linked with the energy storage unit, a second linkage part capable of being linked with the closing and opening transmission unit, and a third linkage part capable of being linked with the tripping transmission unit are provided;

[0011] When the energy storage unit is in an energy storage state, the closing and opening transmission unit is in an opening state, and the tripping transmission unit is in a free state, the closing ready indicator is in a state of indicating that closing is possible;

[0012] When the energy storage unit is in an energy release state, or the closing and opening transmission unit is in a closing state, or the tripping transmission unit is in a non-free state, the closing ready indicator is in a state of indicating that closing is not possible.

[0013] As an alternative technical solution of the operating mechanism of the above circuit breaker, a fourth linkage part is provided on the indicator body, and a signal generator is provided outside the side plate of the frame;

[0014] When the closing ready indicator is in a state of indicating that closing is possible, the fourth linkage part triggers the signal generator;

[0015] When the closing ready indicator is in a state of indicating that closing is not possible, the fourth linkage part cannot trigger the signal generator.

[0016] As an alternative technical solution of the operating mechanism of the above circuit breaker, a closing ready indication part is provided on the indicator body;

[0017] When the closing ready indicator is in a state of indicating that closing is possible, the closing ready indication part indicates that closing is ready;

[0018] When the closing ready indicator is in a state of indicating that closing is not possible, the closing ready indication part indicates that closing is not ready.

[0019] As an alternative technical solution of the operating mechanism of the above circuit breaker, the first linkage part includes a first convex block protruding from the side surface of the indicator body. A first sliding groove is provided on the side plate of the frame. The first convex block passes through the first sliding groove and can be linked with the energy storage unit, and the first convex block can slide along the first sliding groove.

[0020] As an alternative technical solution of the operating mechanism of the circuit breaker described above, the energy storage unit includes a first cam plate, which is rotatably connected to the frame. The first cam plate is provided with a circumferential portion and a groove portion;

[0021] When the energy storage unit is in the energy storage state, the first protrusion is at the first end of the first chute and is disposed opposite to the groove portion, or the first protrusion is at the second end of the first chute and is placed inside the groove portion; when the energy storage unit is in the energy release state, the first protrusion is at the first end of the first chute and abuts against the circumferential portion.

[0022] As an alternative technical solution of the operating mechanism of the circuit breaker described above, the second linkage portion includes a second protrusion protruding from the side surface of the indicating member body. A second chute is provided on the side plate of the frame. The second protrusion passes through the second chute and can be linked with the closing and opening transmission unit, and the second protrusion can slide along the second chute.

[0023] As an alternative technical solution of the operating mechanism of the circuit breaker described above, the closing and opening transmission unit includes a closing and opening indicating member and a main shaft. The closing and opening indicating member and the main shaft are respectively rotatably connected to the frame. The closing and opening indicating member includes a first linkage plate, and a main shaft cantilever is provided on the main shaft;

[0024] When the closing and opening transmission unit is in the closing state, the main shaft cantilever presses against one side of the first linkage plate, the other side of the first linkage plate presses against the second protrusion, and the second protrusion is placed at the first end of the second chute; when the closing and opening transmission unit is in the opening state, the main shaft cantilever is separated from one side of the first linkage plate, and the second protrusion is placed at the first end or the second end of the second chute.

[0025] As an alternative technical solution of the operating mechanism of the circuit breaker described above, the third linkage portion includes a third protrusion provided at one end of the indicating member body. A third chute is provided on the side plate of the frame. One end of the tripping transmission unit passes through the third chute and can be linked with the third protrusion, and one end of the tripping transmission unit can slide along the third chute.

[0026] As an alternative technical solution of the operating mechanism of the circuit breaker described above, the tripping transmission unit includes a tripping half shaft, and a linkage shaft is provided on the tripping half shaft. The linkage shaft passes through the third chute;

[0027] When the tripping transmission unit is in the free state, the linkage shaft is placed at the first end of the third chute; when the tripping transmission unit is in the non-free state, the linkage shaft is placed at the second end of the third chute and presses against the third protrusion.

[0028] As an alternative technical solution of the operating mechanism of the circuit breaker described above, the closing-ready indicator further includes a first elastic member, which connects the indicator body and the frame. When the energy storage unit is in the energy storage state, the closing and opening transmission unit is in the opening state, and the tripping transmission unit is in the free state, the first elastic member makes the closing-ready indicator in the displayable closing state.

[0029] On the other hand, a circuit breaker is provided, including a circuit breaker body and the operating mechanism of the circuit breaker described in any one of the above, and the operating mechanism of the circuit breaker is arranged on the circuit breaker body.

[0030] Advantages of the present invention:

[0031] The closing-ready indicators in the operating mechanism of the circuit breaker provided by the present invention are all arranged outside the side plates of the frame, which is convenient for installing and replacing the closing-ready indicators, reduces the maintenance cost, and can also selectively install the closing-ready indicators, enabling the circuit breaker to have a function selection performance and meet the diversified requirements of the circuit breaker; the first linkage part of the closing-ready indicator is directly linked with the energy storage unit, the second linkage part is directly linked with the closing and opening transmission unit, and the third connection part is directly linked with the tripping transmission unit, simplifying the connection structure between the closing-ready indicator and the energy storage unit, the closing and opening transmission unit, and the tripping transmission unit. Moreover, the states of the energy storage unit, the closing and opening transmission unit, and the tripping transmission unit can make the closing-ready indicator in the displayable closing state or the non-displayable closing state, facilitating the operator to accurately judge whether the circuit breaker is in the closable state and avoiding ineffective closing. Description of the drawings

[0032] Figure 1 is a partial structural schematic diagram of the circuit breaker provided by the embodiment of the present invention;

[0033] Figure 2 is a partial structural schematic diagram of the operating mechanism provided by the embodiment of the present invention;

[0034] Figure 3 is a structural schematic diagram of the closing-ready indicator from the first perspective provided by the embodiment of the present invention;

[0035] Figure 4 is a structural schematic diagram of the closing-ready indicator from the second perspective provided by the embodiment of the present invention;

[0036] Figure 5 is a structural schematic diagram of the mask provided by the embodiment of the present invention;

[0037] Figure 6 is a position structural schematic diagram of the closing-ready indicator from the first perspective when the energy storage unit is in the energy release state provided by the embodiment of the present invention;

[0038] Figure 7 It is a schematic diagram of the positional structure of the closing readiness indicator at the second perspective when the energy storage unit provided by the embodiment of the present invention is in the energy release state;

[0039] Figure 8 It is a schematic diagram of the partial structure of the energy storage unit provided by the embodiment of the present invention;

[0040] Figure 9 It is a schematic diagram of the positional structure of the closing readiness indicator at the first perspective when the circuit breaker provided by the embodiment of the present invention is in the closed state;

[0041] Figure 10 It is a schematic diagram of the positional structure of the closing readiness indicator at the second perspective when the circuit breaker provided by the embodiment of the present invention is in the closed state;

[0042] Figure 11 It is a schematic diagram of the structure of the main shaft provided by the embodiment of the present invention;

[0043] Figure 12 It is a schematic diagram of the structure of the closing and opening indicator provided by the embodiment of the present invention;

[0044] Figure 13 It is a schematic diagram of the positional structure of the closing readiness indicator at the first perspective when the tripping transmission unit provided by the embodiment of the present invention is in the non-free state;

[0045] Figure 14 It is a schematic diagram of the positional structure of the closing readiness indicator at the second perspective when the tripping transmission unit provided by the embodiment of the present invention is in the non-free state;

[0046] Figure 15 It is a schematic diagram of the structure of the opening half shaft provided by the embodiment of the present invention;

[0047] Figure 16 It is a schematic diagram of the structure of the under-voltage release provided by the embodiment of the present invention;

[0048] Figure 17 It is a schematic diagram of the structure of the closing readiness indicator at the first perspective when it shows the state of being ready to close;

[0049] Figure 18 It is a schematic diagram of the structure of the closing readiness indicator at the second perspective when it shows the state of being ready to close.

[0050] In the figure:

[0051] 1. Frame; 11. Side plate; 111. First chute; 112. Second chute; 113. Third chute; 12. Second mounting portion; 13. Limit shaft;

[0052] 2. Energy storage unit; 21. First cam plate; 211. Circumferential part; 212. Groove part; 22. Camshaft; 23. Second cam plate; 24. Energy storage display indicator

[0053] 3. Closing and opening transmission unit; 31. Closing and opening indicator; 311. First linkage plate; 312. Closing and opening display part; 32. Main shaft; 321. Main shaft cantilever; 33. Second elastic member

[0054] 4. Tripping transmission unit; 41. Opening half shaft; 42. Linkage shaft; 43. Opening cantilever

[0055] 5. Closing ready indicator; 51. Indicator body; 52. First linkage part; 53. Second linkage part; 54. Third linkage part; 55. Fourth linkage part; 56. Closing ready indication part; 57. First elastic member; 58. First mounting part; 59. Limit block; 510. Limit chute; 511. Indicator connecting rod

[0056] 6. Signal generator

[0057] 7. Face mask; 71. Observation window

[0058] 100. Circuit breaker body; 200. Under-voltage release; 201. Tripping iron core

[0059] 301. First direction; 302. Second direction; 303. Third direction; 304. Fourth direction Detailed implementation manners

[0060] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention

[0061] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations

[0062] In the present invention, unless otherwise clearly specified or limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0063] As Figures 1 to 3 shown, this embodiment provides an operating mechanism for a circuit breaker. The operating mechanism of this circuit breaker includes a frame 1, and an energy storage unit 2, a closing and opening transmission unit 3, and a tripping transmission unit 4 are arranged inside the frame 1. A closing ready indicator 5 is rotatably arranged on the outer side of the side plate 11 of the frame 1, which facilitates the installation and replacement of the closing ready indicator 5, reduces the maintenance cost, and can also selectively install the closing ready indicator 5, enabling the circuit breaker to have a function selection performance and meet the diverse requirements of the circuit breaker. The closing ready indicator 5 includes an indicator body 51, and a first linkage portion 52 capable of being linked with the energy storage unit 2, a second linkage portion 53 capable of being linked with the closing and opening transmission unit 3, and a third linkage portion 54 capable of being linked with the tripping transmission unit 4 are arranged on the indicator body 51, which simplifies the connection structure between the closing ready indicator 5 and the energy storage unit 2, the closing and opening transmission unit 3, and the tripping transmission unit 4.

[0064] When the energy storage unit 2 is in an energy storage state, the closing and opening transmission unit 3 is in an opening state, and the tripping transmission unit 4 is in a free state, the closing ready indicator 5 is made to be in a state of indicating that closing is possible. When the energy storage unit 2 is in an energy release state, or the closing and opening transmission unit 3 is in a closing state, or the tripping transmission unit 4 is in a non-free state, the closing ready indicator 5 is made to be in a state of indicating that closing is not possible. The states of the energy storage unit 2, the closing and opening transmission unit 3, and the tripping transmission unit 4 can make the closing ready indicator 5 be in a state of indicating that closing is possible or in a state of indicating that closing is not possible, which facilitates the operator to accurately judge whether the circuit breaker is in a state where closing is possible and avoid ineffective closing.

[0065] Referring to Figure 2 and Figure 3As shown, the indicator body 51 is rotatably connected to the side plate 11 of the frame 1. Specifically, a first mounting portion 58 is provided on the indicator body 51, and a second mounting portion 12 is provided on the side plate 11 of the frame 1. The first mounting portion 58 is rotatably connected to the second mounting portion 12, thereby realizing the rotatable connection between the ready-to-close indicator 5 and the frame 1. Optionally, the first mounting portion 58 includes a mounting hole that passes through the indicator body 51, and the second mounting portion 12 includes a mounting shaft that is vertically connected to the side plate 11 of the frame 1, and the mounting shaft is inserted into the mounting hole, and the ready-to-close indicator 5 can rotate around the mounting shaft.

[0066] In some embodiments, in combination Figure 1 , Figure 2 and Figure 3 As shown, the ready-to-close indicator 5 also includes a first elastic member 57, which connects the indicator body 51 and the frame 1. When the energy storage unit 2 is in the energy storage state, the opening and closing transmission unit 3 is in the opening state, and the tripping transmission unit 4 is in the free state, the first elastic member 57 makes the ready-to-close indicator 5 in a state indicating that the switch can be closed.

[0067] Optionally, the first elastic member 57 is a torsion spring, which is sleeved on the end of the above-mentioned installation shaft away from the frame 1. The torsion spring can limit the displacement of the indicator body 51 in the axial direction of the installation shaft. One end of the torsion spring is connected to the indicator body 51, and the other end of the torsion spring is connected to the frame 1. The torsion spring provides a force to make the closing-ready indicator 5 in a state indicating that the closing state can be displayed.

[0068] In order to fix the two ends of the torsion spring, a limit block 59 is provided on the indicator body 51, and a receiving groove is provided on the limit block 59, and one end of the torsion spring is limited in the receiving groove. A limit shaft 13 is provided on the side plate 11 of the frame 1, and one end of the limit shaft 13 passes through the indicator body 51 and is placed on the side of the indicator body 51 away from the frame 1. A limit groove is provided on one end of the limit shaft 13, and the other end of the torsion spring is limited in the limit groove. In order not to affect the rotation of the ready-to-close indicator 5, a limit slide groove 510 is provided on the indicator body 51, and one end of the limit shaft 13 slides through the limit slide groove 510, so that the limit shaft 13 will not limit the rotation of the ready-to-close indicator 5.

[0069] In some embodiments, a fourth linkage portion 55 is provided on the indicating member body 51, and a signal generator 6 is provided outside the side plate 11 of the frame 1. When the closing-ready indicating member 5 is in the state of indicating that closing is ready, the fourth linkage portion 55 triggers the signal generator 6, and the signal generator 6 outputs a signal indicating that closing is ready. This reminder signal is an electrical signal, which facilitates the operator to accurately judge whether the circuit breaker is in a state where closing is possible, and avoids ineffective closing. When the closing-ready indicating member 5 is in the state of indicating that closing is not possible, the fourth linkage portion 55 cannot trigger the signal generator 6, and thus the signal generator 6 cannot output a signal indicating that closing is ready, so as to inform the operator that the circuit breaker cannot be closed at this time.

[0070] The signal generator 6 is also provided outside the side plate 11 of the frame 1. The signal generator 6 can be selectively installed, so that the circuit breaker has a function selection performance, meeting the diverse requirements of the circuit breaker.

[0071] The fourth linkage portion 55 includes a triggering protrusion provided on the side of the indicating member body 51 facing away from the frame 1. The signal generator 6 is a microswitch, and the triggering protrusion can contact the triggering portion of the microswitch to trigger the microswitch to output an electrical signal.

[0072] In some other embodiments, as Figure 4 shown, a closing-ready indicating portion 56 is provided on the indicating member body 51. When the closing-ready indicating member 5 is in the state of indicating that closing is ready, the closing-ready indicating portion 56 indicates that closing is ready. This display signal is a mechanical signal, and the operator can directly view it to obtain information on whether closing is possible, which is intuitive and clear. When the closing-ready indicating member 5 is in the state of indicating that closing is not possible, the closing-ready indicating portion 56 indicates that closing is not ready, so as to inform the operator that the circuit breaker cannot be closed at this time.

[0073] Optionally, an indicating connecting rod 511 is connected to the indicating member body 51. One end of the indicating connecting rod 511 is connected to the indicating member body 51, and the other end of the indicating connecting rod 511 is provided with a closing-ready indicating portion 56. When the closing-ready indicating member 5 is installed outside the side plate 11 of the frame 1, the end of the indicating connecting rod 511 having the closing-ready indicating portion 56 extends toward the inside of the frame 1. A mask 7 is provided outside the operating mechanism of the circuit breaker, and an observation window 71 is provided at a position corresponding to the closing-ready indicating portion 56. The operator can observe the current state of the circuit breaker through the observation window 71 (see the mask 7 and the observation window 71 in Figure 5 shown).

[0074] Continue to refer to Figure 4As shown, the closing preparation ready indication part 56 can display "OK" and "OK", with "OK" set above "OK", and the closing preparation ready indication part 56 moves up and down to switch between "OK" and "OK". "OK" indicates that the circuit breaker is in a closable state or a closing preparation ready state, and "OK" indicates that the circuit breaker is in a non-closable state or a closing preparation unready state.

[0075] The closing preparation ready indication part 56 can also display fonts such as "Closable" and "Non-closable" to inform the operator of the current state of the circuit breaker.

[0076] The signal of closing preparation ready can adopt the above-mentioned way of electrical signal output, or the above-mentioned way of mechanical signal output, or a combination of the two ways, so as to output the signal of closing preparation ready more accurately.

[0077] Such as Figure 3 、 Figure 6 、 Figure 7 and Figure 8 As shown, the first linkage part 52 can be linked with the energy storage unit 2. In some embodiments, the first linkage part 52 includes a first convex block protruding from the side of the indicating part body 51. A first sliding groove 111 is provided on the side plate 11 of the frame 1. The first convex block passes through the first sliding groove 111 and is linked with the energy storage unit 2 placed in the frame 1. The first convex block can slide along the first sliding groove 111 to enable the closing preparation ready indicating part 5 to rotate. By arranging the first convex block on the indicating part body 51 to be linked with the energy storage unit 2, the structure is simple, and the indicating part body 51 can be directly connected with the energy storage unit 2 through the first convex block, so as to accurately and precisely control the state of the closing preparation ready indicating part 5.

[0078] Optionally, the energy storage unit 2 includes a first cam plate 21, and the first cam plate 21 is rotatably connected with the frame 1. Specifically, the first cam plate 21 is arranged on the camshaft 22, and the camshaft 22 is rotatably connected with the frame 1, and the first cam plate 21 can rotate with the camshaft 22.

[0079] The first cam piece 21 is provided with a circumferential portion 211 and a groove portion 212. When the energy storage unit 2 is in the energy storage state, the first bump is at the first end a of the first chute 111 and is disposed opposite to the groove portion 212 or the first bump is at the second end b of the first chute 111 and is placed inside the groove portion 212. Further explanation is needed. If the closing readiness indicator 5 is in the state indicating that closing is ready, the first bump is at the second end b of the first chute 111 and is placed inside the groove portion 212. If the closing readiness indicator 5 is in the state indicating that closing is not ready, the first bump is placed at the first end a of the first chute 111 and is separated from the groove portion 212. When the energy storage unit 2 is in the energy storage state, the closing readiness indicator 5 rotates around the first direction 301, and the first bump placed at the second end b of the first chute 111 separates from the groove portion 212 and slides to the first end a of the first chute 111. The above-mentioned fourth linkage portion 55 does not trigger the signal generator 6 and / or the closing readiness indicating portion 56 to display that the closing readiness is not ready. The closing readiness indicator 5 rotates around the second direction 302, and the second direction 302 is opposite to the first direction 301. The first bump placed at the first end a of the first chute 111 slides to the second end b of the first chute 111, and the first bump slides into the groove portion 212. The fourth linkage portion 55 triggers the signal generator 6 and / or the closing readiness indicating portion 56 to display that the closing readiness is ready.

[0080] When the energy storage unit 2 is in the energy release state, the first bump is at the first end a of the first chute 111 and abuts against the circumferential portion 211. Specifically, when the energy storage unit 2 releases energy, the first cam piece 21 rotates around the first direction 301, so that the first bump gradually separates from the groove portion 212. And as the first cam piece 21 rotates, the circumferential portion 211 contacts the first bump and pushes the first bump to slide from the second end b to the first end a of the first chute 111. The closing readiness indicating portion 56 rotates around the first direction 301, and the fourth linkage portion 55 does not trigger the signal generator 6 and / or the closing readiness indicating portion 56 to display that the closing readiness is not ready.

[0081] The energy storage unit 2 further includes a second cam piece 23 and an energy storage display indicator 24. The second cam piece 23 is parallel to and spaced from the first cam piece 21 on the camshaft 22. The second cam piece 23 cooperates with the energy storage display indicator 24 to make the energy storage display indicator 24 display that the energy storage unit 2 is in the energy storage state or the energy release state. The cooperation structure and principle between the energy storage display indicator 24 and the second cam piece 23 are prior arts and will not be specifically described herein. The energy storage unit 2 further includes other structures, which are prior arts and will not be specifically introduced herein.

[0082] Such as Figure 3 And Figures 9 to 12As shown, the second linkage part 53 is linked with the closing and opening transmission unit 3. In some embodiments, the second linkage part 53 includes a second convex block protruding from the side surface of the indicating member body 51. A second sliding groove 112 is provided on the side plate 11 of the frame 1. The second convex block passes through the second sliding groove 112 and can be linked with the closing and opening transmission unit 3. The second convex block can slide along the second sliding groove 112 so that the closing ready indicator 5 can rotate. By providing the second convex block on the indicating member body 51 to be linked with the closing and opening transmission unit 3, the structure is simple, and the indicating member body 51 can be directly connected with the closing and opening transmission unit 3 through the second convex block, and the state of the closing ready indicator 5 can be accurately and precisely controlled.

[0083] Optionally, the closing and opening transmission unit 3 includes a closing and opening indicator 31 and a main shaft 32. The closing and opening indicator 31 and the main shaft 32 are respectively rotatably connected to the frame 1. The closing and opening indicator 31 includes a first linkage plate 311, and a main shaft cantilever 321 is provided on the main shaft 32.

[0084] When the closing and opening transmission unit 3 is in the closing state, the main shaft cantilever 321 presses against one side of the first linkage plate 311, the other side of the first linkage plate 311 presses against the second convex block, and the second convex block is placed at the first end c of the second sliding groove 112. Specifically, during the closing process of the circuit breaker, the main shaft 32 rotates around the second direction 302, and then drives the main shaft cantilever 321 to rotate around the second direction 302, and makes the main shaft cantilever 321 press against one side of the first linkage plate 311. And as the main shaft cantilever 321 rotates, the first linkage plate 311 rotates around the first direction 301, and the first linkage plate 311 pushes the second convex block to slide from the second end d of the second sliding groove 112 to the first end c, thereby driving the closing ready indicator 5 to rotate and be in the state of indicating non-closing. The closing and opening indicator 31 further includes a closing and opening display part 312. At this time, the closing and opening display part 312 displays "closed" to indicate that the circuit breaker is in the closing state.

[0085] When the opening and closing transmission unit 3 is in the opening state, the main shaft cantilever 321 is separated from one side of the first linkage plate 311, and the second convex block is placed at the first end c or the second end d of the second chute 112. Specifically, during the opening process of the circuit breaker, the main shaft 32 rotates around the first direction 301, thereby driving the main shaft cantilever 321 to rotate around the first direction 301. The main shaft cantilever 321 gradually stops applying pressure to the first linkage plate 311 and separates from the first linkage plate 311. The first linkage plate 311 rotates around the second direction 302, and the opening and closing display portion 312 displays "open" to indicate that the circuit breaker is in the opening state. If the energy storage unit 2 is in the energy storage state and the tripping transmission unit 4 is in the free state, the second convex block slides from the first end c of the second chute 112 to the second end d. The second convex block can abut against the other side of the first linkage plate 311, and the closing readiness indicator 5 rotates and is in the state of indicating that closing is ready; if the energy storage unit 2 is in the energy release state or the tripping transmission unit 4 is in the non-free state, the second convex block is placed at the position of the first end c of the second chute 112, and the closing readiness indicator 5 does not rotate and is in the state of indicating that closing is not ready.

[0086] The above-mentioned opening and closing indicator 31 is connected with a second elastic member 33. During the closing process of the circuit breaker, when the opening and closing indicator 31 rotates around the first direction 301, the second elastic member 33 stores energy. During the opening process of the circuit breaker, after the main shaft cantilever 321 is separated from the first linkage plate 311, the second elastic member 33 releases energy to make the opening and closing indicator 31 rotate around the second direction 302 until the opening and closing display portion displays "open". Optionally, the second elastic member 33 is a compression spring. During the closing process of the circuit breaker, the compression spring is stretched, and during the opening process of the circuit breaker, the compression spring resets.

[0087] As Figure 3 and Figures 13 to 16 As shown, the third linkage portion 54 can be linked with the tripping transmission unit 4. In some embodiments, the third linkage portion 54 includes a third convex block provided at one end of the indicator body 51, and the third convex block is placed outside the frame 1. A third chute 113 is provided on the side plate 11 of the frame 1. One end of the tripping transmission unit 4 passes through the third chute 113 and can be linked with the third convex block. One end of the tripping transmission unit 4 can slide along the third chute 113 to enable the closing readiness indicator 5 to rotate. By providing the third convex block on the indicator body 51 to be linked with the tripping transmission unit 4, the structure is simple, and the indicator body 51 can be directly connected with the tripping transmission unit 4 through the third convex block, which can accurately and precisely control the state of the closing readiness indicator 5.

[0088] Optionally, the tripping transmission unit 4 includes a tripping half shaft 41, and a linkage shaft 42 is provided on the tripping half shaft 41. The linkage shaft 42 passes through the third chute 113.

[0089] When the trip drive unit 4 is in the free state, the linkage shaft 42 is placed at the first end e of the third chute 113. Specifically, during the process of the trip drive unit 4 switching from the non-free state to the free state, the opening half shaft 41 rotates about the third direction 303, and the linkage shaft 42 slides from the second end f of the third chute 113 to the first end e, and the linkage shaft 42 does not apply pressure to the third convex block. If the energy storage unit 2 is in the energy storage state and the opening and closing drive unit 3 is in the opening state, the closing ready indicator 5 rotates about the fourth direction 304 until the closing ready indicator 5 is in the state of indicating that closing is possible, and the fourth direction 304 is opposite to the third direction 303. If the energy storage unit 2 is in the energy release state or the opening and closing drive unit 3 is in the closing state, the closing ready indicator 5 does not rotate, and the closing ready indicator 5 is in the state of indicating that closing is not possible.

[0090] When the trip drive unit 4 is in the non-free state, the linkage shaft 42 is placed at the second end f of the third chute 113 and presses against the third convex block. Specifically, during the process of the trip drive unit 4 switching from the free state to the non-free state, the opening half shaft 41 rotates about the fourth direction 304, and the linkage shaft 42 slides from the first end e of the third chute 113 to the second end f, and the linkage shaft 42 applies pressure to the third convex block, and the closing ready indicator 5 rotates about the third direction 303 to be in the state of indicating that opening is not possible.

[0091] An opening cantilever 43 is further provided on the opening half shaft 41. The circuit breaker includes an under-voltage release 200. When the under-voltage release 200 is in the power-off or under-voltage non-operating state, the release iron core 201 of the under-voltage release 200 extends and can abut against the opening cantilever 43, and pushes the opening cantilever 43 to rotate about the fourth direction 304, thereby driving the opening half shaft 41 to rotate about the fourth direction 304. The linkage shaft 42 slides from the first end e of the third chute 113 to the second end f, and the trip drive unit 4 is in the non-free state. When the under-voltage release 200 is in the powered-on operating state, the release iron core 201 of the under-voltage release 200 retracts, and the release iron core 201 no longer presses against the opening cantilever 43. The opening half shaft 41 rotates about the third direction 303, and the linkage shaft 42 slides from the second end f of the third chute 113 to the first end e, and the trip drive unit 4 is in the free state.

[0092] Such as Figure 17 and Figure 18As shown in the figure, the circuit breaker is in the ready-to-close state when three conditions are met simultaneously, namely: 1. The energy storage unit 2 is in the energy storage state; 2. The closing and opening transmission unit 3 is in the opening state; 3. The tripping transmission unit 4 is in the free state. When all of the above three conditions are met simultaneously, the ready-to-close indicator 5 is in the state of indicating that closing is possible, that is, "OK" is displayed on the ready-to-close indicating portion 56 of the ready-to-close indicator 5. When any one of the above three conditions is not met, the ready-to-close indicator 5 is in the state of indicating that closing is not possible, that is, "OK" is displayed on the ready-to-close indicating portion 56 of the ready-to-close indicator 5.

[0093] Continue to refer to Figure 1 As shown in the figure, this embodiment also provides a circuit breaker, which includes a circuit breaker body 100 and the operating mechanism of the circuit breaker described in any of the above solutions, and the operating mechanism of the circuit breaker is arranged on the circuit breaker body 100.

[0094] The circuit breaker further includes an under-voltage release 200, and the under-voltage release 200 cooperates with the opening cantilever 43 of the above-mentioned opening half shaft 41, and the specific cooperation relationship is as described above.

[0095] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. The operating mechanism of a circuit breaker, characterized in that, Comprising: A frame (1), within which an energy storage unit (2), a closing and opening transmission unit (3) and a tripping transmission unit (4) are provided; A closing readiness indicator (5), rotatably arranged outside a side plate (11) of the frame (1), the closing readiness indicator (5) comprising an indicator body (51), on which a first linkage portion (52) capable of being linked with the energy storage unit (2), a second linkage portion (53) capable of being linked with the closing and opening transmission unit (3) and a third linkage portion (54) capable of being linked with the tripping transmission unit (4) are provided. An indicating connecting rod (511) is further connected to the indicator body (51), one end of the indicating connecting rod (511) is connected to the indicator body (51), and a closing readiness indicating portion (56) is provided at the other end of the indicating connecting rod (511). The end of the indicating connecting rod (511) where the closing readiness indicating portion (56) is provided extends towards the inside of the frame (1), and the closing readiness indicating portion (56) is used for indicating a closable state or a non-closable state; The first linkage portion (52) comprises a first protrusion protruding from a side surface of the indicator body (51). A first chute (111) is provided on the side plate (11) of the frame (1). The first protrusion passes through the first chute (111) and can be linked with the energy storage unit (2), and the first protrusion can slide along the first chute (111); The energy storage unit (2) comprises a first cam plate (21), a second cam plate (23), an energy storage display indicator (24) and a camshaft (22). The camshaft (22) is rotatably connected to the frame (1). The first cam plate (21) and the second cam plate (23) are arranged in parallel and at intervals on the camshaft (22). The second cam plate (23) cooperates with the energy storage display indicator (24) to enable the energy storage display indicator (24) to indicate that the energy storage unit (2) is in an energy storage state or an energy release state. A circumferential portion (211) and a groove portion (212) are provided on the first cam plate (21); When the energy storage unit (2) is in an energy storage state, the first protrusion is at a first end of the first chute (111) and is disposed opposite to the groove portion (212) or the first protrusion is at a second end of the first chute (111) and is placed within the groove portion (212); when the energy storage unit (2) is in an energy release state, the first protrusion is at the first end of the first chute (111) and abuts against the circumferential portion (211); The second linkage portion (53) comprises a second protrusion protruding from a side surface of the indicator body (51). A second chute (112) is provided on the side plate (11) of the frame (1). The second protrusion passes through the second chute (112) and can be linked with the closing and opening transmission unit (3), and the second protrusion can slide along the second chute (112); The closing and opening transmission unit (3) includes a closing and opening indicating member (31) and a main shaft (32). The closing and opening indicating member (31) and the main shaft (32) are respectively rotatably connected to the frame (1). The closing and opening indicating member (31) includes a first linkage plate (311) and a closing and opening display portion (312). A main shaft cantilever (321) is provided on the main shaft (32). When the closing and opening transmission unit (3) is in the closing state, the main shaft cantilever (321) presses against one side of the first linkage plate (311), the other side of the first linkage plate (311) presses against the second bump and the second bump is placed at the first end of the second chute (112), and the closing and opening display portion (312) displays closing; when the closing and opening transmission unit (3) is in the opening state, the main shaft cantilever (321) separates from one side of the first linkage plate (311), the second bump is placed at the first end or the second end of the second chute (112), and the closing and opening display portion (312) displays opening; The third linkage portion (54) includes a third bump provided at one end of the indicating member body (51). A third chute (113) is provided on the side plate (11) of the frame (1). One end of the tripping transmission unit (4) passes through the third chute (113) and can be linked with the third bump, and one end of the tripping transmission unit (4) can slide along the third chute (113); When the energy storage unit (2) is in the energy storage state, the closing and opening transmission unit (3) is in the opening state, and the tripping transmission unit (4) is in the free state, the closing ready indicating member (5) is in the state of displaying closability; When the energy storage unit (2) is in the energy release state, or the closing and opening transmission unit (3) is in the closing state, or the tripping transmission unit (4) is in the non-free state, the closing ready indicating member (5) is in the state of displaying non-closability.

2. The operating mechanism of the circuit breaker according to claim 1, characterized in that, A fourth linkage portion (55) is provided on the indicating member body (51). A signal generator (6) is provided outside the side plate (11) of the frame (1); When the closing ready indicating member (5) is in the state of displaying closability, the fourth linkage portion (55) triggers the signal generator (6); When the closing ready indicating member (5) is in the state of displaying non-closability, the fourth linkage portion (55) cannot trigger the signal generator (6).

3. The operating mechanism of the circuit breaker according to claim 1, wherein When the closing ready indicating member (5) is in the state of displaying closability, the closing ready indicating portion (56) displays that closing is ready; When the closing ready indicating member (5) is in the state of displaying non-closability, the closing ready indicating portion (56) displays that closing is not ready.

4. The operating mechanism of the circuit breaker according to claim 1, characterized in that, The tripping transmission unit (4) includes a tripping half shaft (41). A linkage shaft (42) is provided on the tripping half shaft (41). The linkage shaft (42) passes through the third chute (113); The tripping drive unit (4) is in a free state, and the linkage shaft (42) is placed at the first end of the third chute (113); when the tripping drive unit (4) is in a non-free state, the linkage shaft (42) is placed at the second end of the third chute (113) and presses against the third bump.

5. The operating mechanism of the circuit breaker according to claim 1, characterized in that, The closing readiness indicator (5) further includes a first elastic member (57). The first elastic member (57) connects the indicator body (51) and the frame (1). When the energy storage unit (2) is in an energy storage state, the closing and opening drive unit (3) is in an opening state, and the tripping drive unit (4) is in a free state, the first elastic member (57) makes the closing readiness indicator (5) in a state indicating that closing is possible.

6. Circuit breaker, characterized in that, It includes a circuit breaker body (100) and an operating mechanism of the circuit breaker according to any one of claims 1-5, and the operating mechanism of the circuit breaker is arranged on the circuit breaker body (100).

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