Push type mechanical switch mechanism and circuit breaker

Abstract

The embodiment of the invention provides a push type mechanical switch mechanism and a circuit breaker. The switching mechanism includes: first and second mechanical contacts switchable between an on state and an off state; the first pressing piece is configured to switch the first mechanical contact and the second mechanical contact from the disconnected state to the connected state under the condition that the first mechanical contact and the second mechanical contact are in the disconnected state and the first pressing piece is pressed down; the second pressing piece is configured to switch the first mechanical contact and the second mechanical contact from the on state to the off state under the condition that the first mechanical contact and the second mechanical contact are in the on state and the second pressing piece is pressed down; the electromagnetic assembly is configured to switch the first mechanical contact and the second mechanical contact from the on state to the off state under the condition that the first mechanical contact and the second mechanical contact are in the on state and the first pressing piece is not pressed down and under the condition that the first mechanical contact and the second mechanical contact are in the on state and the first pressing piece is kept pressed down.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to the technical field of electrical equipment, and more particularly, to a push-type mechanical switch mechanism and a circuit breaker including the push-type mechanical switch mechanism. Background Art

[0002] Solid-state circuit breakers require a mechanical switch mechanism, also known as a mechanical breakpoint mechanism, to ensure insulation isolation requirements. Generally, the mechanical switch mechanism needs to have three basic functions, namely manual closing, manual opening, and electric opening. Since the mechanical switch mechanism in a conventional solid-state circuit breaker achieves closing and opening without power, the requirements for contact opening and closing speed and contact pressure do not need to be particularly high.

[0003] In some cases, there is a need for free tripping of the mechanical switch mechanism, that is, the closing action of the mechanical switch mechanism is still maintained after the manual closing is completed, and during this period, it is still hoped that the mechanical switch mechanism can still achieve the opening operation. Conventional solid-state circuit breakers cannot meet such requirements. Summary of the invention

[0004] An object of the present disclosure is to provide a push-type mechanical switch mechanism and a circuit breaker including the push-type mechanical switch mechanism to at least partially solve the above-mentioned problems.

[0005] In a first aspect of the present disclosure, a push-type mechanical switch mechanism is provided, comprising: a first mechanical contact and a second mechanical contact, capable of switching between an on state and an off state; a first pressing member, configured to switch the first mechanical contact and the second mechanical contact from an off state to an on state when the first mechanical contact and the second mechanical contact are in an off state and the first pressing member is pressed; a second pressing member, configured to switch the first mechanical contact and the second mechanical contact from an on state to an off state when the first mechanical contact and the second mechanical contact are in an on state and the second pressing member is pressed; and an electromagnetic component, configured to switch the first mechanical contact and the second mechanical contact from an on state to an off state when the first mechanical contact and the second mechanical contact are in an on state and the first pressing member is not pressed and when the first mechanical contact and the second mechanical contact are in an on state and the first pressing member remains pressed.

[0006] In some embodiments, the push-type mechanical switch mechanism also includes: a contact support member, supporting the first mechanical contact; a transmission member, configured to rotate and drive the contact support member to move under the drive of the first pressing member when the first pressing member is pressed, so that the first mechanical contact moves toward the second mechanical contact along a first predetermined direction; and a limit member, configured to lock the contact support member when the first mechanical contact and the second mechanical contact are in a connected state, and to unlock the contact support member when the second pressing member is pressed or the electromagnetic component is triggered.

[0007] In some embodiments, the first pressing member includes a first pressing portion and a rotating portion, the rotating portion being rotatably connected to the first pressing portion, wherein before the first pressing portion is pressed to a first predetermined position relative to the frame, the rotating portion is capable of moving together with the first pressing portion in a pressing direction relative to the frame to drive the transmission member to rotate, and after the first pressing portion is pressed to the first predetermined position relative to the frame, the rotating portion is capable of rotating relative to the first pressing portion and stopping driving the transmission member to rotate.

[0008] In some embodiments, the first pressing portion is connected to the frame via an elastic member and is restricted in an initial position by the frame when not pressed.

[0009] In some embodiments, the transmission member includes a first transmission part and a second transmission part, the first transmission part is movably connected to the first pressing member and can rotate under the drive of the first pressing member, and the second transmission part is configured to drive the contact support member to move under the drive of the first transmission part so that the first mechanical contact moves along the first predetermined direction toward the second mechanical contact.

[0010] In some embodiments, the contact support member includes: a sliding member, which can move relative to the frame along the first predetermined direction when the first pressing member is pressed; a supporting portion, which is connected to the sliding member and supports the first mechanical contact; a third transmission portion, which is connected to the sliding member and can be driven by the transmission member to move the sliding member along the first predetermined direction relative to the frame; and a first mating portion, which is connected to the sliding member and can be locked by the limit member.

[0011] In some embodiments, the sliding member is connected to the frame via an elastic member, and can be pulled toward a direction opposite to the first predetermined direction when the limiting member releases the locking of the contact support member.

[0012] In some embodiments, the contact support further includes: an indication portion connected to the sliding member and capable of indicating a connection state between the first mechanical contact and the second mechanical contact.

[0013] In some embodiments, the limit member is rotatably connected to the frame and includes a fourth transmission portion and a second matching portion, and the fourth transmission portion can be driven by the second pressing member or the electromagnetic assembly to rotate the limit member along a second predetermined direction relative to the frame, wherein before the limit member rotates along the second predetermined direction relative to the frame to a second predetermined position, the second matching portion locks the contact support, and after the limit member rotates along the second predetermined direction relative to the frame to the second predetermined position, the second matching portion releases the lock on the contact support.

[0014] In some embodiments, a torsion spring is disposed on the limiting member, and when the second pressing member is released or the electromagnetic assembly is not triggered, the torsion spring drives the limiting member to rotate in a direction opposite to the second predetermined direction.

[0015] In some embodiments, the electromagnetic assembly includes an iron core, wherein when the electromagnetic assembly is triggered, the iron core extends and is capable of driving the limiting member to release the lock on the contact support member.

[0016] In some embodiments, the second pressing member is connected to the frame via an elastic member and is restricted in an initial position by the frame when not pressed.

[0017] In some embodiments, the second mechanical contact is connected to the chassis via an elastic member.

[0018] In some embodiments, the first mechanical contact is connected to the contact support via a resilient member.

[0019] In a second aspect of the present disclosure, a solid-state circuit breaker is provided, comprising the push-type mechanical switch mechanism according to the first aspect of the present disclosure.

[0020] According to the embodiments of the present disclosure, the first mechanical contact and the second mechanical contact can be switched between the two stable states of the on state and the off state only by a simple pressing action. In addition, the mechanical switch mechanism of the embodiments of the present disclosure can realize the free tripping of the circuit breaker, that is, after the mechanical switch mechanism completes the manual closing and maintains the closing action, the opening operation can still be realized, so that the circuit breaker can be freely tripped.

[0021] It should be understood that the content described in this content section is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it 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

[0022] 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:

[0023] Figure 1 An operation flow chart showing a conventional solid-state circuit breaker connecting and disconnecting a main circuit;

[0024] Figure 2 An operation flow chart of a push-type mechanical switch mechanism according to an embodiment of the present disclosure is shown;

[0025] Figure 3 A schematic structural diagram of a push-type mechanical switch mechanism in a closed state according to an embodiment of the present disclosure is shown;

[0026] Figure 4 A schematic structural diagram of a push-type mechanical switch mechanism in an open state according to an embodiment of the present disclosure is shown;

[0027] FIG. 5A to FIG. 5D The manual closing process of the push-type mechanical switch mechanism according to one embodiment of the present disclosure is shown;

[0028] FIG. 6A to FIG. 6D The manual opening process of the push-type mechanical switch mechanism according to one embodiment of the present disclosure is shown;

[0029] Figure 7 The electric opening process of the push-type mechanical switch mechanism according to one embodiment of the present disclosure is shown; and

[0030] FIG. 8A to FIG. 8E The free tripping process of the push-type mechanical switch mechanism according to one embodiment of the present disclosure is shown.

[0031] Description of reference numerals:

[0032] Boxes 101-106, 201-203;

[0033] 10 racks;

[0034] 21 first pressing member;

[0035] 211 first pressing portion;

[0036] 212 rotating part;

[0037] 22 second pressing member;

[0038] 30 transmission parts;

[0039] 301 first transmission part;

[0040] 302 second transmission part;

[0041] 40 contact support;

[0042] 401 sliding part;

[0043] 402 support part;

[0044] 403 third transmission unit;

[0045] 404 first matching portion;

[0046] 405 Instruction Department;

[0047] 50 limiter;

[0048] 501 fourth transmission unit;

[0049] 502 second matching portion;

[0050] 60 electromagnetic components;

[0051] 601 iron core;

[0052] 71 compression spring;

[0053] 72 tension spring;

[0054] 73 torsion spring;

[0055] 81 first mechanical contact;

[0056] 82 Second mechanical contact. DETAILED DESCRIPTION

[0057] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred 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 limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0058] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects.

[0059] Figure 1 The following is a flowchart showing the operation of a conventional solid-state circuit breaker for connecting and disconnecting the main circuit. Figure 1 As shown, in frame 101, the solid-state circuit breaker is in an open state. In frame 102, the mechanical contacts of the solid-state circuit breaker are turned on, so that the solid-state circuit breaker is in a standby state, and no current flows through the solid-state circuit breaker at this time. In frame 103, the electronic switch of the solid-state circuit breaker is turned on, so that current flows through the solid-state circuit breaker. In frame 104, when both the mechanical contacts and the electronic switch are turned on, the solid-state circuit breaker is in a closed state. In frame 105, the electronic switch is disconnected, so that the solid-state circuit breaker is in a standby state, and no current flows through the solid-state circuit breaker at this time. In frame 106, the mechanical contacts are disconnected. When both the mechanical contacts and the electronic switch are disconnected, the solid-state circuit breaker is in an open state. The mechanical switch mechanism in a conventional solid-state circuit breaker realizes closing and opening without power, so the requirements for the contact opening and closing speed and contact pressure do not need to be particularly high.

[0060] In some cases, there is a need for free tripping of the mechanical switch mechanism, that is, the closing action of the mechanical switch mechanism is still maintained after the manual closing is completed, and during this period, it is still hoped that the mechanical switch mechanism can achieve the opening operation. Conventional solid-state circuit breakers cannot meet such a demand. The embodiment of the present disclosure provides a push-type mechanical switch mechanism (also referred to as a push-type mechanical breakpoint mechanism in this article), which can switch between two stable states, the on state and the off state, and can achieve free tripping of the circuit breaker. The following will be combined with Figures 2 to 8E Embodiments of the present disclosure are described.

[0061] Figure 2 FIG. 2 shows an operation flow chart of a push-type mechanical switch mechanism according to an embodiment of the present disclosure. Figure 2 As shown, in frame 201, the first pressing member (e.g., the on button) is pressed to manually close the push-type mechanical switch mechanism. In frame 202, the second pressing member (e.g., the off button) is pressed to manually open the push-type mechanical switch mechanism. In frame 203, the electromagnetic assembly is energized and triggered, thereby electrically opening the push-type mechanical switch mechanism. In an embodiment of the present disclosure, when the first pressing member remains pressed, the electromagnetic assembly is triggered to open the push-type mechanical switch mechanism, thereby achieving free tripping.

[0062] Figure 3 A schematic structural diagram of a push-type mechanical switch mechanism in a closed state according to an embodiment of the present disclosure is shown. Figure 4 Shows Figure 3 The schematic diagram of the structure of the push-type mechanical switch mechanism in the open state is shown.

[0063] In one embodiment, Figure 3 and Figure 4 As shown, the push-type mechanical switch mechanism described herein generally includes a frame 10, a first push member 21, a second push member 22, a transmission member 30, a contact support member 40, a limit member 50, an electromagnetic assembly 60, a first mechanical contact 81 and a second mechanical contact 82.

[0064] The frame 10 mainly plays a supporting role, and is used to support at least a part of other components in the push-type mechanical switch mechanism. For example, one or more components of the first pressing member 21, the second pressing member 22, the transmission member 30, the contact support member 40, the stop member 50, the electromagnetic assembly 60, the first mechanical contact 81, and the second mechanical contact 82 can be directly connected to the frame 10 or connected to the frame 10 via one or more intermediate connectors.

[0065] The first pressing member 21 is used to implement a manual closing operation of the push-type mechanical switch mechanism. When the push-type mechanical switch mechanism is in an open state, the push-type mechanical switch mechanism can be switched to a closed state by pressing the first pressing member 21 .

[0066] The second pressing member 22 is used to implement the manual opening operation of the push-type mechanical switch mechanism. When the push-type mechanical switch mechanism is in the closed state, the push-type mechanical switch mechanism can be switched to the open state by pressing the second pressing member 22. The open state and the closed state are two stable states of the push-type mechanical switch mechanism. The push-type mechanical switch mechanism will be in one of the open state and the closed state when stable.

[0067] When the first pressing member 21 is pressed, the transmission member 30 can move relative to the frame 10 driven by the first pressing member 21 and drive the contact support member 40 to move relative to the frame 10 along a first predetermined direction (eg, leftward direction in the figure).

[0068] The contact support 40 is used to support the first mechanical contact 81, and can move relative to the frame 10 along a first predetermined direction (e.g., the left direction in the figure) and a direction opposite to the first predetermined direction (e.g., the right direction in the figure) so that the first mechanical contact 81 is connected or disconnected with the second mechanical contact 82. The first mechanical contact 81 may also be referred to as a moving contact in this article, and the second mechanical contact 82 may also be referred to as a stationary contact in this article.

[0069] The stopper 50 is used to lock the contact support 40 when the first mechanical contact 81 and the second mechanical contact 82 are in the connected state, so as to prevent the contact support 40 from moving relative to the frame 10, thereby keeping the first mechanical contact 81 and the second mechanical contact 82 in the connected state.

[0070] The electromagnetic assembly 60 is used to realize the electric opening operation of the push-type mechanical switch mechanism. When the push-type mechanical switch mechanism is in the closed state and the first pressing member 21 is not pressed, by energizing the electromagnetic assembly 60, the electromagnetic assembly 60 can drive the limiter 50 to move to release the lock on the contact support 40, so that the first mechanical contact 81 is separated from the second mechanical contact 82, and the push-type mechanical switch mechanism is switched to the opening state. In addition, when the push-type mechanical switch mechanism is in the closed state and the first pressing member 21 remains pressed, by energizing the electromagnetic assembly 60, the electromagnetic assembly 60 can also drive the limiter 50 to move to release the lock on the contact support 40, so that the first mechanical contact 81 is separated from the second mechanical contact 82, and the free tripping of the solid-state circuit breaker is realized.

[0071] In some embodiments, Figure 3 and Figure 4 As shown, the first pressing member 21 includes a first pressing portion 211 and a rotating portion 212. The rotating portion 212 can be rotatably connected to the first pressing portion 211 via a hinge or any appropriate connection structure. The first pressing portion 211 can be connected to the frame 10 via a compression spring 71.

[0072] When the first pressing portion 211 is pressed, the compression spring 71 can be compressed and shortened. Before the first pressing portion 211 is pressed to a predetermined position relative to the frame 10, the rotating portion 212 will be restricted by the frame 10, and thus will move relative to the frame 10 together with the first pressing portion 211, and will not rotate relative to the first pressing portion 211. In this case, the rotating portion 212 can drive the transmission member 30 to move relative to the frame 10. After the first pressing portion 211 is pressed to a predetermined position relative to the frame 10, the rotating portion 212 is no longer restricted by the frame 10, and thus the rotating portion 212 will rotate relative to the first pressing portion 211 and bend.

[0073] When the first pressing portion 211 is released (ie, not pressed), the compression spring 71 may resume the extended state, and the frame 10 may prevent the movement of the first pressing portion 211 , thereby maintaining the first pressing portion 211 in an initial position where it is not pressed.

[0074] In some embodiments, the first pressing portion 211 may also be connected to the frame 10 via a tension spring. In such an embodiment, when the first pressing portion 211 is pressed, the tension spring may be stretched and elongated. When the first pressing portion 211 is released (i.e., not pressed), the tension spring may return to its initial state. In this way, the pressing operation of the first pressing portion 211 may also be achieved in a simple manner.

[0075] In some embodiments, Figure 3 and Figure 4As shown, the transmission member 30 can be rotatably connected to the frame 10 via a hinge or any appropriate connection structure. When the first pressing member 21 is pressed, the transmission member 30 can rotate relative to the frame 10 driven by the first pressing member 21, and the drive contact support member 40 can move relative to the frame 10.

[0076] In some embodiments, Figure 3 and Figure 4 As shown, the transmission member 30 includes a first transmission part 301 and a second transmission part 302. The first transmission part 301 can be movably connected to the first pressing member 21, for example, connected to the rotating part 212. When the first pressing member 21 is pressed relative to the frame 10, the first pressing member 21 can generate a force on the first transmission part 301, thereby driving the transmission member 30 to rotate relative to the frame 10. At this time, the second transmission part 302 can drive the contact support member 40 to move relative to the frame 10 under the drive of the first transmission part 301.

[0077] In some embodiments, Figure 3 and Figure 4 As shown, when the first pressing member 21 is not pressed, the second transmission part 302 can be separated from the contact support 40. In some embodiments, when the first pressing member 21 is not pressed, the second transmission part 302 can also contact the contact support 40 to a certain extent, which is not limited in the embodiments of the present disclosure.

[0078] In some embodiments, Figure 3 and Figure 4 As shown, the contact support member 40 includes a sliding member 401, a support portion 402, a third transmission portion 403 and a first matching portion 404. The sliding member 401 can move relative to the frame 10 in a predetermined direction (for example, to the left or to the right). The support portion 402 is connected to the sliding member 401 to support the first mechanical contact 81. When the sliding member 401 slides relative to the frame 10 in a predetermined direction, the support portion 402 can drive the first mechanical contact 81 to approach or move away from the second mechanical contact 82 so that the two contacts are connected or disconnected. The third transmission portion 403 is connected to the sliding member 401 and is correspondingly arranged with the second transmission portion 302. The first matching portion 404 is connected to the sliding member 401 and can cooperate with the limiter 50 to achieve the locking of the contact support member 40 by the limiter 50.

[0079] When the first pressing member 21 is pressed relative to the frame 10, the transmission member 30 can rotate relative to the frame 10, so that the second transmission part 302 applies a force to the third transmission part 403, thereby driving the sliding member 401 to move leftward. In this way, the first mechanical contact 81 can be brought into contact with the second mechanical contact 82.

[0080] The sliding member 401 is also connected to the frame 10 via the tension spring 72. When the first pressing member 21 is not pressed and the stopper 50 releases the lock on the contact support 40, the tension spring 72 can pull the sliding member 401, so that the first mechanical contact 81 moves to the right in a direction away from the second mechanical contact 82, thereby separating the first mechanical contact 81 from the second mechanical contact 82. In some embodiments, the frame 10 can limit the range of movement of the contact support 40 in a direction away from the second mechanical contact 82.

[0081] In some embodiments, the sliding member 401 may also be connected to the frame 10 via a compression spring. For example, the compression spring is disposed on the left side of the sliding member 401. When the first pressing member 21 is not pressed and the stopper 50 releases the lock on the contact support member 40, the compression spring may push the sliding member 401, so that the first mechanical contact 81 moves rightward in a direction away from the second mechanical contact 82, thereby separating the first mechanical contact 81 from the second mechanical contact 82.

[0082] In some embodiments, Figure 3 and Figure 4 As shown, the contact support 40 further includes an indicator 405. The indicator 405 can indicate the state of the push-type mechanical switch mechanism. Specifically, the indicator 405 can indicate the connection state between the first mechanical contact 81 and the second mechanical contact 82. Figure 3 As shown, when the first mechanical contact 81 contacts the second mechanical contact 82, the indicator 405 can indicate that the two contacts are in the ON state. Figure 4 As shown, when the first mechanical contact 81 is separated from the second mechanical contact 82 , the indicator 405 may indicate that the two contacts are in an OFF state.

[0083] In one embodiment, Figure 3 and Figure 4 As shown, the second mechanical contact 82 is connected to the frame 10 via the compression spring 71. When the first mechanical contact 81 and the second mechanical contact 82 are in the connected state, the compression spring 71 is compressed and shortened, thereby increasing the contact force between the two contacts and making the contact more stable and reliable.

[0084] In some embodiments, the second mechanical contact 82 is also connected to the frame 10 via a tension spring. For example, the tension spring can be arranged on the right side of the second mechanical contact 82. When the first mechanical contact 81 and the second mechanical contact 82 are in the connected state, the tension spring is stretched and elongated, which can also increase the contact force between the two contacts, making the contact more stable and reliable.

[0085] In some embodiments, the first mechanical contact 81 can be connected to the contact support 40 via an elastic member. The elastic member can also be a compression spring or a tension spring. With such an arrangement, the contact force between the two contacts can also be increased, making the contact more stable and reliable.

[0086] The second pressing member 22 is used to realize the manual opening operation of the push-type mechanical switch mechanism. When the second pressing member 22 is pressed, the second pressing member 22 can drive the limiting member 50 to rotate relative to the frame 10, thereby releasing the lock on the contact support member 40.

[0087] In one embodiment, Figure 3 and Figure 4 As shown, the second pressing member 22 can be connected to the frame 10 via a compression spring 71. When the second pressing member 22 is pressed, the compression spring 71 can be compressed and shortened. When the second pressing member 22 is released (i.e., not pressed), the compression spring 71 can restore the extended state, and the frame 10 can limit the range of motion of the second pressing member 22, thereby keeping the second pressing member 22 in an initial position that is not pressed.

[0088] In some embodiments, the second pressing member 22 may also be connected to the frame 10 via a tension spring. In such an embodiment, when the second pressing member 22 is pressed, the tension spring may be stretched and elongated. When the second pressing member 22 is released (i.e., not pressed), the tension spring may return to its initial state. In this way, the pressing operation of the second pressing member 22 can also be achieved.

[0089] In one embodiment, Figure 3 and Figure 4 As shown, the electromagnetic assembly 60 may include an iron core 601. When the electromagnetic assembly 60 is triggered, the iron core 601 may extend, thereby driving the limiting member 50 to rotate relative to the frame 10, thereby releasing the lock on the contact support member 40.

[0090] In one embodiment, Figure 3 and Figure 4 As shown, the stopper 50 can be rotatably connected to the frame 10 via a hinge or any appropriate connection structure. When the second pressing member 22 is pressed or the electromagnetic assembly 60 is triggered, the stopper 50 can be driven by the second pressing member 22 or driven by the electronic assembly 60 to rotate relative to the frame 10 along a second predetermined direction (e.g., counterclockwise in the figure), thereby releasing the lock on the contact support 40.

[0091] In one embodiment, Figure 3 and Figure 4As shown, the limit member 50 includes a fourth transmission part 501 and a second matching part 502. When the second pressing member 22 is pressed, the second pressing member 22 can generate a force on the fourth transmission part 501, thereby driving the limit member 50 to rotate relative to the frame 10, for example, in the counterclockwise direction as shown in the figure. Similarly, when the electromagnetic assembly 60 is triggered, the iron core 601 of the electromagnetic assembly 60 can extend, thereby generating a force on the fourth transmission part 501, driving the limit member 50 to rotate relative to the frame 10, for example, in the counterclockwise direction as shown in the figure. The second matching part 502 is used to cooperate with the contact support 40 to lock the contact support 40 when the first mechanical contact 81 and the second mechanical contact 82 are in the connected state.

[0092] In one embodiment, Figure 3 and Figure 4 As shown, a torsion spring 73 is provided on the limit member 50. When the second pressing member 22 is released or the iron core 601 of the electromagnetic assembly 60 is retracted, the torsion spring 73 can drive the limit member 50 to rotate relative to the frame 10, for example, in the clockwise direction as shown in the figure. During the process of the first pressing member 21 being pressed, the leftward movement of the contact support 40 can drive the limit member 50 to rotate in the counterclockwise direction as shown in the figure. When the first pressing member 21 is released, the torsion spring 73 can drive the limit member 50 to rotate relative to the frame 10, for example, in the clockwise direction as shown in the figure to a position where the contact support 40 is locked.

[0093] Next, we will combine FIG. 5A to FIG. 8E To describe the manual closing, manual opening, electric opening and free tripping processes of the push-type mechanical switch mechanism.

[0094] FIG. 5A to FIG. 5D The manual closing process of a push-type mechanical switch mechanism according to an embodiment of the present disclosure is shown.

[0095] like Figure 5A As shown, the push-type mechanical switch mechanism is in the process of being closed, that is, in the process of switching from the open state to the closed state. The first pressing member 21 moves in the negative direction Y under the action of the external force F. The first pressing member 21 transmits power to the transmission member 30 through the contact point between the rotating part 212 and the first transmission part 301, so that the transmission member 30 rotates relative to the frame 10 in the clockwise direction. The transmission member 30 transmits power to the contact support member 40 through the contact point between the second transmission part 302 and the third transmission part 403, so that the contact support member 40 moves in the negative direction X, thereby driving the first mechanical contact 81 to move toward the second mechanical contact 82. The contact support member 40 causes the limit member 50 to rotate counterclockwise through the first contact point between the first matching part 404 and the second matching part 502. At this time, the limit member 50 has not yet locked the contact support member 40.

[0096] like Figure 5B As shown, the first pressing member 21 is continuously pressed in the negative direction Y, so that the contact support member 40 is further moved in the negative direction X, until the first contact point between the first matching portion 404 and the second matching portion 502 is separated. At this time, the limiting member 50 rotates in the clockwise direction under the action of the torsion spring 73, buckles into the contact support member 40, and forms a second contact point between the first matching portion 404 and the second matching portion 502. The first matching portion 404 and the second matching portion 502 are mutually limited, so that the limiting member 50 locks the contact support member 40, thereby keeping the first mechanical contact 81 and the second mechanical contact 82 in the connected state.

[0097] like Figure 5C As shown, the first pressing member 21 continues to be pressed along the negative direction Y, and the rotating portion 212 is no longer restricted by the frame 10, so the rotating portion 212 rotates relative to the first pressing portion 211 and bends.

[0098] like Figure 5D As shown, when the external force F is removed, the first pressing member 21 rebounds to the initial position when no external force F is applied under the action of the compression spring 71 .

[0099] pass FIG. 5A to FIG. 5D The manual closing process shown can reliably switch the mechanical switch mechanism from the open state to the closed state through simple operation.

[0100] FIG. 6A to FIG. 6D The manual opening process of the push-type mechanical switch mechanism according to one embodiment of the present disclosure is shown.

[0101] like Fig. 6A As shown, when the mechanical switch mechanism is in the closed state, an external force F is applied to the second pressing member 22 along the negative direction Y. The second pressing member 22 moves along the negative direction Y, and the limiting member 50 rotates counterclockwise through the contact point between the second pressing member 22 and the fourth transmission part 501, so that the first matching portion 404 and the second matching portion 502 are separated from the second contact point.

[0102] like Figure 6B As shown, the second pressing member 22 is continuously pressed along the negative direction Y, so that the first matching portion 404 and the second matching portion 502 are completely separated from the second contact point. At this time, the stopper 50 releases the lock on the contact support member 40.

[0103] like Figure 6C As shown, the contact support 40 is pulled by the tension spring 72 in the X direction, thereby moving in the positive direction X. The contact support 40 can move in the positive direction X to a position limited by the frame 10, so that the first mechanical contact 81 is separated from the second mechanical contact 82.

[0104] like Fig.6D As shown, when the external force F is removed, the second pressing member 22 rebounds to the initial position when no external force F is applied under the action of the compression spring 71. The limiting member 50 rotates clockwise under the action of the torsion spring 73 and returns to the first contact point between the first matching portion 404 and the second matching portion 502.

[0105] pass FIG. 6A to FIG. 6D The manual opening process shown can reliably switch the mechanical switch mechanism from the closed state to the open state through simple operation.

[0106] Figure 7 FIG. 2 shows the electric opening process of a push-type mechanical switch mechanism according to an embodiment of the present disclosure. Figure 7 As shown, when the mechanical switch mechanism is in the closed state, the electromagnetic assembly 60 is triggered, so that the iron core 601 is pushed out and contacts the limiter 50 at the contact point between the iron core 601 and the fourth transmission part 501. Under the thrust of the iron core 601, the limiter 50 will rotate in the counterclockwise direction, so that the limiter 50 and the contact support 40 are separated from the second contact point, that is, the buckle between the limiter 50 and the contact support 40 is disengaged. At this time, the contact support 40 moves in the positive direction X under the action of the tension spring 72, so that the first mechanical contact 81 is separated from the second mechanical contact 82. The contact support 40 moves to the position limited by the frame 10, and the triggering instruction of the electromagnetic assembly 60 is removed, so that the iron core 601 retracts, and the limiter 50 is also restored to the position with the first contact point with the contact support 40 under the action of the torsion spring 73.

[0107] As described above, when the push-type mechanical switch mechanism is in the closed state and the first push member 21 remains pressed, by energizing the electromagnetic assembly 60, the electromagnetic assembly 60 can also drive the limit member 50 to move to release the lock on the contact support member 40, thereby separating the first mechanical contact 81 from the second mechanical contact 82, thereby achieving free tripping of the solid-state circuit breaker. FIG. 8A to FIG. 8E The free tripping process of the push-type mechanical switch mechanism according to one embodiment of the present disclosure is shown.

[0108] like Fig. 8A As shown, after the first pressing portion 211 is pressed to a predetermined position relative to the frame 10 , the rotating portion 212 is no longer restricted by the frame 10 , and thus the rotating portion 212 rotates relative to the first pressing portion 211 and bends.

[0109] like Figure 8BAs shown, the electromagnetic assembly 60 is triggered, so that the iron core 601 is pushed out and contacts the stopper 50 at the contact point between the iron core 601 and the fourth transmission part 501. Under the thrust of the iron core 601, the stopper 50 will rotate counterclockwise, so that the stopper 50 and the contact support 40 are separated from the second contact point, that is, the buckle between the stopper 50 and the contact support 40 is disengaged.

[0110] like Figure 8C As shown, when the stopper 50 releases the lock on the contact support 40, the contact support 40 moves in the positive direction X under the action of the tension spring 72, so that the first mechanical contact 81 is separated from the second mechanical contact 82. The contact support 40 moves to a position limited by the frame 10.

[0111] like Fig.8D As shown, the triggering instruction of the electromagnetic assembly 60 is removed, so that the iron core 601 retracts, and the limiting member 50 is restored to the position where it has the first contact point with the contact support member 40 under the action of the torsion spring 73 .

[0112] like Fig. 8E As shown, the external force F applied to the first pressing member 21 is removed, so that the first pressing member 21 returns to its initial position. At this point, the free tripping process of the mechanical switch mechanism is completed.

[0113] pass FIG. 8A to FIG. 8E In the manner shown, free tripping can be achieved even when the push-type mechanical switch mechanism is in the closed state and the first push piece 21 remains pressed, thereby further improving the safety performance of the circuit breaker.

[0114] The embodiments of the present disclosure also provide a circuit breaker, including any one of the push-type mechanical switch mechanisms described above. As an example, the circuit breaker may include a solid-state circuit breaker. It should be understood that the push-type mechanical switch mechanism may also be applied to other types of circuit breakers, and the embodiments of the present disclosure are not limited thereto.

[0115] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A push-type mechanical switch mechanism, comprising: A first mechanical contact (81) and a second mechanical contact (82) capable of switching between an on state and an off state; A first pressing member (21) is configured to switch the first mechanical contact (81) and the second mechanical contact (82) from an off state to an on state when the first mechanical contact (81) and the second mechanical contact (82) are in an off state and the first pressing member (21) is pressed; a second pressing member (22) configured to switch the first mechanical contact (81) and the second mechanical contact (82) from the on state to the off state when the first mechanical contact (81) and the second mechanical contact (82) are in the on state and the second pressing member (22) is pressed; and The electromagnetic assembly (60) is configured to switch the first mechanical contact (81) and the second mechanical contact (82) from the connected state to the disconnected state when the first mechanical contact (81) and the second mechanical contact (82) are in the connected state and the first pressing member (21) is not pressed, and when the first mechanical contact (81) and the second mechanical contact (82) are in the connected state and the first pressing member (21) remains pressed.

2. The push-type mechanical switch mechanism according to claim 1, further comprising: A contact support (40) supporting the first mechanical contact (81); A transmission member (30) configured to rotate under the drive of the first pressing member (21) and drive the contact support member (40) to move when the first pressing member (21) is pressed, so that the first mechanical contact (81) moves toward the second mechanical contact (82) along a first predetermined direction; as well as The limit member (50) is configured to lock the contact support member (40) when the first mechanical contact (81) and the second mechanical contact (82) are in an on state, and to release the lock on the contact support member (40) when the second pressing member (22) is pressed or the electromagnetic assembly (60) is triggered.

3. The push-type mechanical switch mechanism according to claim 2, wherein the first pressing member (21) comprises a first pressing portion (211) and a rotating portion (212), the rotating portion (212) being rotatably connected to the first pressing portion (211), wherein before the first pressing portion (211) is pressed to a first predetermined position relative to the frame (10), the rotating portion (212) is capable of moving together with the first pressing portion (211) along a pressing direction relative to the frame (10) to drive the transmission member (30) to rotate, and after the first pressing portion (211) is pressed to the first predetermined position relative to the frame (10), the rotating portion (212) is capable of rotating relative to the first pressing portion (211) and stopping driving the transmission member (30) to rotate.

4. The push-type mechanical switch mechanism according to claim 3, wherein the first pressing portion (211) is connected to the frame (10) via an elastic member and is restricted in an initial position by the frame (10) when not pressed.

5. The push-type mechanical switch mechanism according to claim 2, wherein the transmission member (30) comprises a first transmission part (301) and a second transmission part (302), the first transmission part (301) being movably connected to the first pressing member (21) and being capable of rotating under the drive of the first pressing member (21), and the second transmission part (302) being configured to drive the contact support member (40) to move under the drive of the first transmission part (301), so that the first mechanical contact (81) moves along the first predetermined direction toward the second mechanical contact (82).

6. The push-type mechanical switch mechanism according to claim 2, wherein the contact support member (40) comprises: a sliding member (401) capable of moving relative to the frame (10) along the first predetermined direction when the first pressing member (21) is pressed; A support portion (402) connected to the sliding member (401) and supporting the first mechanical contact (81); a third transmission part (403), connected to the sliding member (401) and capable of being driven by the transmission member (30) so as to move the sliding member (401) relative to the frame (10) along the first predetermined direction; as well as A first matching portion (404) is connected to the sliding member (401) and can be locked by the limiting member (50).

7. A push-type mechanical switch mechanism according to claim 6, wherein the sliding member (401) is connected to the frame (10) via an elastic member, and can pull the sliding member (401) in a direction opposite to the first predetermined direction when the limit member (50) releases the lock on the contact support member (40).

8. The push-type mechanical switch mechanism according to claim 6, wherein the contact support member (40) further comprises: An indicating portion (405) is connected to the sliding member (401) and is capable of indicating a connection state between the first mechanical contact (81) and the second mechanical contact (82).

9. The push-type mechanical switch mechanism according to claim 2, wherein the limit member (50) is rotatably connected to the frame (10) and comprises a fourth transmission part (501) and a second matching part (502), wherein the fourth transmission part (501) can be driven by the second pressing member (22) or the electromagnetic assembly (60) to rotate the limit member (50) relative to the frame (10) along a second predetermined direction, wherein before the limit member (50) rotates relative to the frame (10) along the second predetermined direction to a second predetermined position, the second matching part (502) locks the contact support (40), and after the limit member (50) rotates relative to the frame (10) along the second predetermined direction to the second predetermined position, the second matching part (502) releases the lock on the contact support (40).

10. The push-type mechanical switch mechanism according to claim 9, wherein a torsion spring (73) is provided on the limit member (50), and when the second push member (22) is released or the electromagnetic assembly (60) is not triggered, the torsion spring (73) drives the limit member (50) to rotate in a direction opposite to the second predetermined direction.

11. A push-type mechanical switch mechanism according to any one of claims 2 to 10, wherein the electromagnetic component (60) includes an iron core (601), wherein when the electromagnetic component (60) is triggered, the iron core (601) extends and is able to drive the limit member (50) to release the lock on the contact support member (40).

12. The push-type mechanical switch mechanism according to any one of claims 1 to 10, wherein the second pressing member (22) is connected to the frame (10) via an elastic member and is restricted in an initial position by the frame (10) when not pressed.

13. The push-type mechanical switch mechanism according to any one of claims 1 to 10, wherein the second mechanical contact (82) is connected to the frame (10) via an elastic member.

14. The push-type mechanical switch mechanism according to any one of claims 2 to 10, wherein the first mechanical contact (81) is connected to the contact support (40) via an elastic member.

15. A circuit breaker comprising the push-type mechanical switch mechanism according to any one of claims 1 to 14.

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