Breakpoint mechanism for switching device and switching device

Abstract

The embodiment of the invention provides a breakpoint mechanism for a switching device and the switching device. The breakpoint mechanism comprises a contact driving assembly which comprises a driven part and is coupled to a moving contact so as to drive the moving contact to move between an opening position and a closing position; the handle assembly is suitable for rotating around a pivot shaft and comprises an associated driving part and a telescopic driving part, the telescopic driving part keeps the length unchanged when rotating along with the handle assembly in the first rotating direction so as to drive the contact driving assembly to rotate along the second rotating direction, and then the moving contact is driven to move to the closing position; the telescopic driving part is suitable for retracting to avoid the driven part during rotation in the second rotation direction; and the auxiliary assembly is coupled to the associated driving part and is suitable for moving to a second position along the first moving direction in the tripping process of the switching device, so that the handle assembly rotates along the second rotating direction. The breakpoint mechanism is easy and convenient to operate and not prone to misoperation, and the free tripping function can be better supported.

Description

Technical Field

[0001] Example embodiments of the present disclosure relate generally to the field of electronic equipment protection, and more particularly to a breakpoint mechanism for a switch device and a switch device. Background Art

[0002] A switching device such as a solid-state circuit breaker is an electrical protection device used to interrupt the current in a circuit to protect electrical equipment from damage due to overload or short circuit. Unlike traditional mechanical circuit breakers, solid-state circuit breakers use semiconductor devices, such as thyristors or power transistors, to control the flow of current.

[0003] In order to provide reliable electrical isolation, solid-state circuit breakers usually have mechanical breakpoint modules. However, conventional solid-state circuit breakers with mechanical breakpoint modules have three stable states, namely, closed state, open state, and tripped state. In this case, after the solid-state circuit breaker is tripped, the rotary handle for controlling the opening and closing of the circuit breaker remains in the closed position, and the rotary handle needs to be reset before it can be reclosed after the trip. All these have caused the user operation to remain unchanged, thus affecting the user experience and other issues. Summary of the invention

[0004] In a first aspect of the present disclosure, a breakpoint mechanism for a switch device is provided. The breakpoint mechanism includes a contact drive assembly, including a driven portion, and coupled to a moving contact to drive the moving contact to move between an opening position and a closing position; a handle assembly, adapted to rotate about a pivot axis and including an associated drive portion and a retractable retractable drive portion, the retractable drive portion being adapted to be coupled with the driven portion, and maintaining a constant length during rotation of the handle assembly along a first rotation direction to drive the contact drive assembly to rotate along a second rotation direction opposite to the first rotation direction, thereby driving the moving contact to move from the opening position to the closing position, and the retractable drive portion being adapted to retract during rotation along the second rotation direction to avoid the driven portion; and an auxiliary assembly, coupled to the associated drive portion, and adapted to move from a first position to a second position along a first movement direction during the tripping process of the switch device, so as to rotate the handle assembly along the second rotation direction.

[0005] In some embodiments, the contact drive assembly further includes: a coupling portion adapted to be coupled to the moving contact to drive the moving contact; and a torsion spring adapted to provide an elastic force to allow the contact drive assembly to rotate along the first rotation direction.

[0006] In some embodiments, the associated driving portion is coupled to the auxiliary component so as to push the auxiliary component to move along the first movement direction during rotation of the handle component along the second rotation direction.

[0007] In some embodiments, the contact drive assembly further includes a stopped portion, and the auxiliary assembly further includes a stopping portion, and the stopping portion is arranged to stop the stopped portion when the auxiliary assembly is in the first position to prevent the contact drive assembly from rotating in the first rotational direction.

[0008] In some embodiments, the contact drive assembly also includes an interference portion, and the handle assembly also includes: a telescopic portion, which is suitable for contracting as the handle assembly touches the interference portion during rotation along the first rotation direction and extending after continuing to rotate to a coupling position coupled with the interference portion, wherein in the coupling position, the telescopic portion is arranged to be stopped by the interference portion to prevent the handle assembly from rotating along the second rotation direction.

[0009] In some embodiments, the breaking point mechanism further comprises: an electromagnetic driving component, comprising a push rod, the push rod being operable to push the auxiliary component to move along the first moving direction to the second position when tripping.

[0010] In some embodiments, the breakpoint mechanism further comprises: an elastic member coupled to the auxiliary component and adapted to provide an elastic force when the auxiliary component is in the second position to allow the auxiliary component to move in a second moving direction opposite to the first moving direction.

[0011] In some embodiments, the stopper portion of the auxiliary component is arranged to be stopped by the interference portion during the period when the auxiliary component is in the second position, so as to prevent the auxiliary component from moving along the second moving direction.

[0012] In some embodiments, the breakpoint mechanism further includes: a bearing component, which bears the moving contact and is hinged to the coupling portion so as to drive the moving contact to move between the closing position and the opening position under the drive of the coupling portion.

[0013] In some embodiments, the breakpoint mechanism further includes: a compression spring, arranged between the load-bearing component and the moving contact, or arranged between the stationary contact and the housing of the switching device, to provide contact pressure at least when the moving contact is in the closed position.

[0014] According to the breakpoint mechanism of the embodiment of the present disclosure, the handle assembly of the switch device can return to the open position after tripping, thereby ensuring that the breakpoint mechanism has only two stable states, namely, the open state and the closed state. On the one hand, the user only needs one action to achieve opening or closing in any situation (including after tripping), making the operation more convenient and reducing the possibility of misoperation. On the other hand, according to the embodiment of the present disclosure, the free tripping function is also improved, thereby improving the reliability and user experience of the switch device.

[0015] In a second aspect of the present disclosure, a switch device is provided, which includes the breakpoint mechanism mentioned in the first aspect above and an electronic breakpoint module coupled to the breakpoint mechanism.

[0016] It should be understood that the contents described in this content section are not intended to limit the key features or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0018] Figure 1 A simplified schematic diagram showing a breakpoint mechanism in a closed position according to an embodiment of the present disclosure is shown;

[0019] Figure 2 A simplified schematic diagram showing a breakpoint mechanism in an open position according to an embodiment of the present disclosure is shown;

[0020] FIG. 3A to FIG. 3D Partial schematic diagrams of the telescopic driving part of the handle assembly and the driven part of the contact driving assembly according to some embodiments of the present disclosure are respectively shown;

[0021] Figure 4 A simplified schematic diagram of a breakpoint mechanism in a manual closing process according to some embodiments of the present disclosure is shown;

[0022] Figure 5 A simplified schematic diagram of a breakpoint mechanism in a manual opening process according to some embodiments of the present disclosure is shown;

[0023] Figure 6 A simplified schematic diagram showing a breakpoint mechanism in an electric opening process according to some embodiments of the present disclosure; and

[0024] Figure 7 A simplified schematic diagram of a breaking point mechanism in a free tripping process according to some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0025] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0026] It should be noted that the titles of any sections / subsections provided herein are not restrictive. Various embodiments are described throughout this article, and any type of embodiment may be included under any section / subsection. In addition, the embodiments described in any section / subsection may be combined in any manner with any other embodiments described in the same section / subsection and / or different sections / subsections.

[0027] In the description of the embodiments of the present disclosure, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions may be included below. The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may be included below.

[0028] Circuit breaker is a key component for connecting and disconnecting loads in power transmission and distribution lines. Its main function is to protect the circuit from abnormal current caused by faults and overloads, and to quickly cut off the faulty branch when a system fault occurs. Traditional mechanical circuit breakers protect the circuit by triggering the separation of mechanical contacts through thermal dipole and / or magnetic components, but the response time to faults is long and arcs are easily generated, increasing the risk of equipment damage and personal safety. With the rapid development of power semiconductor technology, replacing mechanical contacts with high-power solid-state contactless switches has become a research hotspot, and solid-state circuit breaker technology has developed rapidly.

[0029] Solid-state circuit breakers disconnect or connect circuits by controlling semiconductor switches. They can respond quickly to current anomalies and quickly cut off the circuit when necessary to prevent damage to electrical equipment or fire. Compared with traditional mechanical circuit breakers, solid-state circuit breakers have many advantages, including faster action time, higher accuracy, smaller size, longer life and lower maintenance costs. Solid-state circuit breakers are often used in applications that require high-precision current protection and frequent switching, such as industrial automation systems, power distribution, motor control and renewable energy systems.

[0030] Solid-state circuit breakers can be divided into fully solid-state circuit breakers and hybrid solid-state circuit breakers. Hybrid solid-state circuit breakers are circuit breakers that use mechanical breakpoints (also known as mechanical switches) and electronic breakpoints (such as power semiconductor devices). When a hybrid solid-state circuit breaker is closed from an open state, the mechanical breakpoints close first, and at this time no current flows in the circuit. Then the electronic breakpoints close, so that current flows through the circuit to complete the closing process. When opening, the electronic breakpoints open first, and after no current flows in the circuit, the mechanical breakpoints open, thus completing the opening process. Mechanical breakpoints can achieve effective electrical isolation, thereby improving the reliability of solid-state circuit breakers.

[0031] However, there are still some problems in the use of traditional hybrid solid-state circuit breakers, which affect the user experience. For example, the current hybrid solid-state circuit breakers usually have three stable states, namely the closed state, the open state and the tripped state. After the current solid-state circuit breaker is tripped, the rotary handle used to control the opening and closing of the circuit breaker is usually still in the closed position. This requires resetting the rotary handle before reclosing the circuit breaker after the circuit breaker is tripped, which brings operational inconvenience. In addition, the free tripping function in traditional solid-state circuit breakers is not perfect. All of these affect the user experience.

[0032] The embodiments of the present disclosure provide a breakpoint mechanism for a switch device such as a solid-state circuit breaker to solve or at least partially solve the above-mentioned problems or other potential problems existing in the conventional switch device. The concept according to the present disclosure will be mainly described below by taking the breakpoint mechanism as a mechanical breakpoint of a solid-state circuit breaker as an example. It should be understood that other types of switch devices having similar mechanisms are also similar and will not be described separately below.

[0033] The scheme of the breakpoint mechanism of the switch device will be described mainly through the accompanying drawings below. It should be understood that the drawings of the present disclosure are only simplified schematic diagrams of the principle and are not intended to represent the scope of protection of the present disclosure. The length and shape of the lines in the drawings and the positional relationship between the lines are only shown for the convenience of describing the scheme principle of the embodiment of the present disclosure. As long as the functions described in the text can be achieved, they can have any appropriate shape, structure or positional relationship in the actual scheme. In addition, the fixed parts in the drawings of the present disclosure represent the housing of the switch device and / or the breakpoint mechanism or an appropriate structure in the housing, which will not be described separately below.

[0034] Figure 1 FIG. 1 shows a schematic diagram of the positions of various components or parts when the breakpoint mechanism according to an embodiment of the present disclosure is in a closed state, and Figure 2 The schematic diagram shows the positions of various components or parts when the breakpoint mechanism is in the open position. Figure 1 and Figure 2 In general, the breakpoint mechanism according to the embodiment of the present disclosure includes a contact drive assembly 101, a handle assembly 102 and an auxiliary assembly 103. In some embodiments, the breakpoint mechanism may further include an electromagnetic drive component 104 having a push rod 1041, which will be further described below.

[0035] In response to the action of the handle assembly 102 and / or the electromagnetic drive component 104, the contact drive assembly 101 is used to drive the moving contact 201 to move between the open position and the closed position. The contact drive assembly 101 is coupled to the moving contact 201 and includes a driven portion 1011. The handle assembly 102 is adapted to rotate around the pivot axis 1021 in response to the operation of the user and / or the action of some components (e.g., the tension spring 1031) to be mentioned later. For example, in some embodiments, the handle assembly 102 may include a handle 1025 located outside the housing, and the handle 1025 can be operated by the user to rotate between the closed position and the open position.

[0036] The handle assembly 102 further includes a retractable retractable driving portion 1023. The retractable driving portion 1023 can be coupled with the driven portion 1011 of the contact driving assembly 101, so that the contact driving assembly 101 drives the moving contact 201 to move between the closing position and the opening position in response to the position change of the handle assembly 102. FIG. 3A to FIG. 3D FIG. 1 is a partial schematic diagram showing the telescopic driving part 1023 of the handle assembly 102 and the driven part 1011 of the contact driving assembly 101. Figure 3A and Figure 3B As shown, the telescopic drive portion 1023 can maintain its length in response to the handle assembly 102 rotating along the first rotation direction R1 (e.g., clockwise), thereby driving the driven portion 1011 of the contact driving assembly 101 to rotate along the second rotation direction R2 (e.g., counterclockwise) opposite to the first rotation direction R1, thereby driving the moving contact 201 to move from the open position to the closed position.

[0037] Figure 3C and Figure 3D A partial schematic diagram of the two structures of the telescopic drive part 1023 of the handle assembly 102 and the driven part 1011 of the contact drive assembly 101 is shown in the process of the handle assembly 102 automatically resetting to the opening position after tripping. Specifically, after tripping, during the period when the handle assembly 102 rotates along the second rotation direction R2 (for example, counterclockwise), the telescopic drive part 1023 can retract (i.e., shorten or shrink) to avoid the driven part 1011, thereby allowing the handle assembly 102 to reset to the opening position. Here, the process of the telescopic drive part 1023 of the handle assembly 102 and the driven part 1011 of the contact drive assembly 101 are described by simple examples and partial views, and the process of how the breakpoint mechanism performs opening, closing and tripping will be further explained below.

[0038] The handle assembly 102 further includes an associated driving portion 1022. The auxiliary assembly 103 is coupled to the associated driving portion 1022 via a tension spring 1031. During the tripping process of the switch device, the auxiliary assembly 103 can move from a first position to a second position along a first moving direction D1 (e.g., a direction from left to right as shown in the figure), so that the handle assembly 102 rotates along a second rotation direction R2 to an opening position.

[0039] In order to facilitate the movement of the auxiliary component 103, a sliding guide component or structure is included on the housing. The auxiliary component 103 can be coupled to the sliding guide component or structure, thereby facilitating the movement of the auxiliary component 103 in the first movement direction D1 and the second movement direction D2 opposite thereto. It should be understood that as long as the function of facilitating the above-mentioned sliding of the auxiliary component 103 can be achieved, any appropriate sliding guide component or structure is possible and is not limited herein.

[0040] According to the breakpoint mechanism of the embodiment of the present disclosure, the handle assembly 102 of the switch device can return to the open position after the tripping, thereby ensuring that the breakpoint mechanism has only two stable states, namely, the open state and the closed state. On the one hand, the user only needs one action to achieve the opening or closing of the switch regardless of the situation (including the situation after the tripping), making the operation more convenient and reducing the possibility of misoperation. On the other hand, according to the embodiment of the present disclosure, the free tripping function is also improved, thereby improving the reliability and user experience of the switch device.

[0041] In some embodiments, the contact drive assembly 101 further includes a coupling portion 1012 and a torsion spring 1013. The coupling portion 1012 can be coupled to the moving contact 201 to drive the moving contact 201 to move. In order to facilitate the coupling between the contact drive assembly 101 and the moving contact 201, in some embodiments, the breakpoint mechanism may further include a bearing component 106 for bearing the moving contact 201. The bearing component 106 is hinged to the coupling portion 1012 of the contact drive assembly 101 to drive the moving contact 201 to move between the closing position and the opening position under the drive of the coupling portion 1012. In some embodiments, the housing of the breakpoint mechanism also includes an appropriate sliding guide component or structure, so that at least a portion of the bearing component 106 slides along the sliding guide component or structure, so that the movement of the moving contact 201 between the closing position and the opening position is more reliable and smooth.

[0042] In some embodiments, the breakpoint mechanism further includes a compression spring 1061 arranged between the bearing member 106 and the moving contact 201. The compression spring 1061 can provide contact pressure at least when the moving contact 201 is in the closed position. On the one hand, the contact pressure can ensure that the moving contact 201 and the static contact 202 maintain good contact during the closed position. On the other hand, the contact pressure can also promote the separation of the moving contact 201 from the static contact 202 in the opening operation or tripping, thereby improving the electrical performance of the switch device.

[0043] The torsion spring 1013 in the contact drive assembly 101 can provide elastic force to make the contact drive assembly 101 rotate along the first rotation direction R1 (that is, drive the moving contact 201 to move toward the opening position). The torsion spring 1013 can provide a driving force in the opening operation and tripping conditions to drive the moving contact 201 to move toward the opening position, thereby separating from the static contact 202 to complete the opening.

[0044] In some embodiments, the contact drive assembly 101 further includes an interference portion 1015. Correspondingly, the handle assembly 102 further includes a telescopic portion 1024. The telescopic portion 1024 can be retracted by contacting the interference portion 1015 during the rotation of the handle assembly 102 along the first rotation direction R1 (e.g., the clockwise direction for closing operation). As the handle assembly 102 continues to rotate along the first rotation direction R1, and extends after rotating to the coupling position coupled with the interference portion 1015, the telescopic portion 1024 can be stopped by the interference portion 1015 at the coupling position to prevent the handle assembly 102 from rotating along the second rotation direction R2, so that the handle assembly 102 remains in the closing position.

[0045] In some embodiments, the telescopic portion 1024 may have a spherical or similar curved shape at the end and a compression spring component in the middle, so that it can contract when touched, and extend again with further movement and be stopped by the interference portion 1015 at the coupling position.

[0046] In some embodiments, the auxiliary component 103 further includes a stopper 1032. Correspondingly, the contact drive component 101 further includes a stopped portion 1014. The stopper 1032 is arranged to stop the stopped portion 1014 when the auxiliary component 103 is in the first position (corresponding to when the moving contact 201 is in the closed position), so as to prevent the contact drive component 101 from rotating along the first rotation direction R1 (e.g., clockwise) to the open position.

[0047] In some embodiments, the associated driving portion 1022 of the handle assembly 102 is also coupled to the auxiliary assembly 103 so that the auxiliary assembly 103 is pushed to move along the first moving direction D1 during the rotation of the handle assembly 102 along the second rotation direction R2 (for example, counterclockwise moving toward the opening position), thereby enabling the auxiliary assembly 103 to move to the second position (corresponding to the moving contact 201 being in the opening position), which is the driven condition of the auxiliary assembly 103 during the manual opening process.

[0048] The auxiliary component 103 can also move along the first moving direction D1 to the second position under the drive of the electromagnetic drive component 104. This is the driven condition of the auxiliary component 103 in the electric opening process (i.e., the tripping process). The electromagnetic drive component 104 includes a tripping coil and a push rod 1041. The tripping coil can push the push rod 1041 to move along the first moving direction D1 from the initial position when powered on (i.e., when tripping is required), thereby pushing the auxiliary mechanism to move along the first moving direction D1 to the second position. The push rod 1041 can return to the initial position after the tripping coil loses power.

[0049] In some embodiments, the breakpoint mechanism further includes an elastic member 105 disposed between the auxiliary component 103 and the housing. The elastic member 105 can provide elastic force when the auxiliary component 103 is in the second position, so that the auxiliary component 103 has a tendency to move in a second moving direction D2 (i.e., a direction from right to left in the figure) opposite to the first moving direction D1. In some embodiments, the elastic member 105 can be a compression spring coupled to the auxiliary component 103. For example, the compression spring can provide a compressive force at least during the period when the auxiliary component 103 is in the second position, so that the auxiliary component 103 has a tendency to move in the second moving direction D2, and can move the auxiliary component 103 in the second moving direction D2 at an appropriate time.

[0050] In some alternative embodiments, the elastic member 105 may also be a tension spring. The tension spring is arranged at a suitable position between the auxiliary component 103 and the housing, and can provide a tensile force at least when the auxiliary component 103 is in the second position, so that the auxiliary component 103 has a tendency to move along the second moving direction D2, and can move the auxiliary component 103 in the second moving direction D2 at a suitable time.

[0051] In some embodiments, the stopper 1032 of the auxiliary component 103 is arranged to be stopped by the interference portion 1015 of the contact drive component 101 during the auxiliary component 103 is in the second position, so as to prevent the auxiliary component 103 from moving along the second moving direction D2. In addition, in some embodiments, the breakpoint mechanism may further include a limiting component 203. The limiting component 203 can stop the auxiliary component 103 after the auxiliary component 103 moves to the first position along the second moving direction D2, so as to keep the auxiliary component 103 in an appropriate position.

[0052] The following will further combine Figures 4 to 7 To describe the operation process of the breakpoint mechanism of the embodiment of the present disclosure. Figure 4 shows the breakpoint mechanism from Figure 2 The open state shown is moved to the closed state by manually closing the handle assembly 102. Figure 1 A schematic diagram of an intermediate state of the closing state is shown.

[0053] During the manual closing process, the handle assembly 102 rotates in the clockwise direction (i.e., the first rotation direction R1 mentioned above) in response to the user's closing operation, and the contact drive assembly 101 rotates in the counterclockwise direction (i.e., the second rotation direction R2 mentioned above) through the contact and coupling between the telescopic drive part 1023 of the handle assembly 102 and the driven part 1011 of the contact drive assembly 101. In this process, the bearing member 106 moves downward in the direction shown in the figure. At the same time, the associated drive part 1022 of the handle assembly 102 is separated from the auxiliary assembly 103, and the auxiliary assembly 103 moves in the second movement direction D2 (i.e., from right to left in the figure) under the action of the elastic member 105 (e.g., compression spring) and the tension spring 1031.

[0054] The handle assembly 102 is continuously rotated, and the stopper 1032 of the auxiliary assembly 103 contacts the interference portion 1015 and the stopped portion 1014 of the contact driving assembly 101 in sequence during the movement. Figure 1 As shown, the telescopic driving part 1023 of the handle assembly 102 separates from the driven part 1011 after completing the contact, and the contact driving assembly 101 rotates clockwise under the action of the torsion spring 1013 to a position where the stopped part 1014 of the contact driving assembly 101 is restricted from rotating by the stop part 1032 of the auxiliary assembly 103. The telescopic part 1024 of the handle assembly 102 moves to the coupling position and is constrained by the interference part 1015 of the contact driving assembly 101 and the housing to reach a balanced state, thereby achieving Figure 1 The stable closed state is shown.

[0055] Figure 5 shows the breakpoint mechanism from Figure 1The closing state shown is moved to the closing state by manually opening the handle assembly 102. Figure 2 The schematic diagram of an intermediate state of the opening state is shown in FIG. Figure 5 As shown, during the period when the handle assembly 102 rotates in the counterclockwise direction (i.e., the second rotation direction R2 in the foregoing text) in response to the user's opening operation, the handle assembly 102 will push the auxiliary assembly 103 to move in the first moving direction D1 (i.e., the direction from left to right in the figure) through the associated driving portion 1022, until the stopped portion 1014 and the interference portion 1015 of the contact driving assembly 101 successively break away from the stop portion 1032 of the auxiliary assembly 103, and the contact driving assembly 101 rotates clockwise under the action of the torsion spring 1013 to open the moving contact 201, achieving the following effect. Figure 2 The stable open state is shown.

[0056] Figure 6 shows the breakpoint mechanism from Figure 1 The closing state shown is moved to the state where the electromagnetic drive component 104 is electrically opened (ie, tripped) by the electromagnetic drive component 104. Figure 2 The schematic diagram of an intermediate state of the opening state is shown in FIG. Figure 6 As shown, when the tripping condition is met, the electromagnetic drive component 104 is triggered, and the push rod 1041 pushes the auxiliary component 103 along the first moving direction D1 (i.e., the direction from left to right shown in the figure), so that the auxiliary component 103 moves along the first moving direction D1, and at the same time, the auxiliary component 103 drives the handle component 102 to rotate in the counterclockwise direction (i.e., the second rotation direction R2 mentioned above) through the tension spring 1031. When the auxiliary component 103 is pushed to a predetermined position by the push rod 1041, the handle component 102 also rotates to the opening position. In this process, the stopped portion 1014 and the interference portion 1015 of the contact drive component 101 successively break away from the stop of the stop portion 1032 of the auxiliary component 103. When the stopped portion 1014 and the interference portion 1015 are completely separated from the stop portion 1032 of the auxiliary component 103, the contact driving component 101 rotates clockwise under the action of the torsion spring 1013, driving the moving contact 201 to move toward the opening position until the bearing component 106 is limited by the housing, thereby achieving Figure 2 The stable open state is shown.

[0057] It can be seen from this process that, as mentioned above, even in an electric opening operation (i.e., a tripping operation), the handle assembly 102 can move to the opening position, so that the breakpoint mechanism has only two stable states, i.e., the opening state and the closing state. In this way, the user only needs to perform one action to close or open the switch device, which reduces the risk of misoperation and improves reliability.

[0058] Figure 7FIG. 2 shows the intermediate process of the free tripping of the breakpoint mechanism according to the embodiment of the present disclosure. Figure 7 As shown, according to the requirement of free tripping, the user keeps the closing force F on the handle 1025 of the handle assembly 102, and the electromagnetic drive component 104 is triggered, pushing the auxiliary component 103 along the first moving direction D1 (i.e., the direction from left to right shown in the figure) until the stopped portion 1014 and the interference portion 1015 of the contact drive assembly 101 successively break away from the stop of the stop portion 1032 of the auxiliary component 103, and the contact drive assembly 101 rotates in the clockwise direction under the action of the torsion spring 1013, and the moving contact 201 is driven to the opening position. After the electromagnetic drive component 104 loses power, the push rod 1041 is reset to the initial position on the left side, and the auxiliary component 103 moves along the second moving direction D2 (i.e., the direction from right to left in the figure) under the action of the elastic member 105 (e.g., compression spring) until the stop portion 1032 of the auxiliary component 103 is stopped by the interference portion 1015 of the contact drive assembly 101 and stops moving. When the closing force F is removed from the handle 1025, the handle assembly 102 is driven to the opening position by the tension spring 1031 and returns to the Figure 2 The stable open state is shown.

[0059] The above descriptions of various implementations of the present disclosure are exemplary, non-exhaustive, and not limited to the disclosed implementations. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described implementations. The selection of terms used herein is intended to best explain the principles of the implementations, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the various implementations disclosed herein.

Claims

1. A breakpoint mechanism for a switch device, comprising: A contact driving assembly (101), comprising a driven part (1011), and coupled to a moving contact (201) to drive the moving contact (201) to move between an opening position and a closing position; A handle assembly (102) adapted to rotate about a pivot axis (1021) and comprising an associated driving portion (1022) and a retractable retractable driving portion (1023), wherein the retractable driving portion (1023) is adapted to be coupled with the driven portion (1011) and to maintain a constant length during rotation along a first rotation direction (R1) with the handle assembly (102) so as to drive the contact driving assembly (101) to rotate along a second rotation direction (R2) opposite to the first rotation direction (R1), thereby driving the moving contact (201) to move from the opening position to the closing position, and the retractable driving portion (1023) is adapted to retract during rotation along the second rotation direction (R2) so as to avoid the driven portion (1011); as well as The auxiliary component (103) is coupled to the associated driving part (1022) and is adapted to move from a first position to a second position along a first moving direction (D1) during the tripping process of the switch device, thereby causing the handle component (102) to rotate along the second rotation direction (R2).

2. The breakpoint mechanism according to claim 1, wherein the contact drive assembly (101) further comprises: A coupling portion (1012) coupled to the moving contact (201) to drive the moving contact (201); as well as A torsion spring (1013) is adapted to provide an elastic force to allow the contact drive assembly (101) to rotate along the first rotation direction (R1).

3. The breakpoint mechanism according to claim 1, wherein the associated drive portion (1022) is coupled to the auxiliary component (103) so as to push the auxiliary component (103) to move along the first movement direction (D1) during the rotation of the handle assembly (102) along the second rotation direction (R2).

4. The breakpoint mechanism according to any one of claims 1 to 3, wherein the contact drive assembly (101) further comprises a stopped portion (1014), and The auxiliary component (103) further comprises a stopper (1032), and the stopper (1032) is arranged to stop the stopped portion (1014) when the auxiliary component (103) is in the first position, so as to prevent the contact drive component (101) from rotating along the first rotation direction (R1).

5. The breakpoint mechanism according to claim 4, wherein the contact drive assembly (101) further comprises an interference portion (1015), and The handle assembly (102) further includes: The telescopic portion (1024) is adapted to contract when the handle assembly (102) contacts the interference portion (1015) during rotation of the handle assembly (102) along the first rotation direction (R1), and to extend after continuing to rotate to a coupling position coupled with the interference portion (1015). Wherein, in the coupling position, the telescopic portion (1024) is arranged to be stopped by the interference portion (1015) to prevent the handle assembly (102) from rotating along the second rotation direction (R2).

6. The breakpoint mechanism according to any one of claims 1 to 3 and 5, further comprising: The electromagnetic driving component (104) comprises a push rod (1041), wherein the push rod (1041) is operable to push the auxiliary component (103) to move along the first moving direction (D1) to the second position when tripping.

7. The breakpoint mechanism according to claim 5, further comprising: An elastic member (105) is coupled to the auxiliary component (103) and is adapted to provide an elastic force when the auxiliary component (103) is in the second position, so as to allow the auxiliary component (103) to move in a second moving direction (D2) opposite to the first moving direction (D1).

8. The breakpoint mechanism according to claim 7, wherein the stop portion (1032) of the auxiliary component (103) is arranged to be stopped by the interference portion (1015) during the period when the auxiliary component (103) is in the second position to prevent the auxiliary component (103) from moving along the second movement direction (D2).

9. The breakpoint mechanism according to claim 2, further comprising: A bearing component (106) bears the moving contact (201) and is hinged to the coupling portion (1012) so as to drive the moving contact (201) to move between the closing position and the opening position under the drive of the coupling portion (1012).

10. The breakpoint mechanism according to claim 9, further comprising: A compression spring (1061) is arranged between the bearing component (106) and the moving contact (201) or between the stationary contact (202) of the switching device and the housing to provide contact pressure at least when the moving contact (201) is in the closed position.

11. A switch device, comprising: The breakpoint mechanism according to any one of claims 1 to 10; as well as An electronic breakpoint module is coupled to the breakpoint mechanism.

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