switching device

Abstract

The application relates to the low-voltage electrical field, in particular to a switch device, one end of a movable contact of which is rotationally arranged on a mounting structure through a first guide structure, the other end of which is matched with a stationary contact, an operating member is respectively matched with a positioning structure at both ends of a swing stroke, one end of a first transmission structure is rotationally connected with the operating member, the other end of which is rotationally connected with one end of a second transmission structure through a first hinged structure, the other end of the second transmission structure is connected with a second hinged structure which is matched with a second guide structure of the movable contact and is slidably arranged on the second guide structure, a supporting structure is snap matched with an actuating structure, and the first hinged structure is slidably arranged on a supporting structure guide structure of the supporting structure; during the closing or disconnecting process of the movable contact and the stationary contact, the first guide structure moves relative to the mounting structure and the second guide structure moves relative to the second hinged structure; the operating system structure of the switch device is more compact, occupies less space, and the contact system has good conductivity.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical equipment, and more specifically to a switching device. Background Technology

[0002] Miniaturization and intelligence have become the development trend of low-voltage electrical components, so that low-voltage electrical products can achieve multiple functions in the smallest possible size to meet the application needs of different occasions.

[0003] As the most basic functional module inside electrical products, the operating mechanism occupies a large proportion of the overall structural layout of electrical products. The miniaturization and compactness of the operating mechanism have become key factors in realizing the miniaturization and intelligence of electrical products. Moreover, after long-term use, an oxide film will form on the moving and stationary contacts of the contact system of low-voltage electrical appliances, which will affect the conductivity of the contact system. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a switching device with a more compact operating system structure, smaller footprint, and good conductivity of the contact system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A switching device includes an operating system and a contact system. The contact system includes a movable contact, a stationary contact, and a mounting structure. The movable contact includes a first guide structure and a second guide structure respectively disposed at one end and the middle of the movable contact. The other end of the movable contact engages with the stationary contact. The movable contact is rotatably mounted on the mounting structure via the first guide structure. The operating system includes a positioning structure, an operating member, a support structure, and an actuation structure, all rotatably disposed, a first transmission structure, a second transmission structure, a second hinge structure, and a guide structure. The operating member is limited at both ends of its swing stroke by the positioning structure. The operating member is rotatably connected to one end of the first transmission structure. The other end of the first transmission structure is rotatably connected to one end of the second transmission structure via the first hinge structure. The other end of the second transmission structure is connected to the second hinge structure. The second hinge structure engages with the second guide structure and is slidably mounted on the guide structure. The support structure engages with the actuation structure. The support structure includes a support structure guide structure. The first hinge structure is slidably mounted on the support structure guide structure. During the closing or opening process of the movable contact and the stationary contact, the first guide structure moves relative to the mounting structure, and the second guide structure moves relative to the second hinge structure.

[0007] Preferably, the first guide structure is an oblong hole or oblong groove, and the second guide structure is an oblong hole or oblong groove; the mounting structure is a contact mounting shaft, and the second hinge structure is a contact hinge shaft; the guide structure is an oblong guide groove, and the contact hinge shaft is slidably inserted into the oblong guide groove.

[0008] Preferably, the contact system further includes a contact spring, one end of which is fixedly disposed, and the other end cooperates with the movable contact to apply a force to the movable contact. When the movable contact and the stationary contact are closed, the movable contact presses against the stationary contact. During the separation of the movable contact and the stationary contact, the contact spring provides a driving force for the movable contact to swing away from the stationary contact.

[0009] Preferably, the contact spring is a torsion spring, and the mounting structure is a contact mounting shaft, with the contact spring sleeved on the contact mounting shaft.

[0010] Preferably, one end of the contact spring is fixedly disposed, and the other end cooperates with the portion of the movable contact located between the first guide structure and the second guide structure.

[0011] Preferably, the switching device further includes a contact limiting structure, wherein after the movable contact and the stationary contact are separated, the movable contact is limited by the contact limiting structure.

[0012] Preferably, when the operating member drives the movable contact member to close or open with the stationary contact member through the first transmission structure and the second transmission structure, the support structure and the actuation structure maintain a latching engagement and remain stationary.

[0013] Preferably, when the switching device is in the closed state, the actuating structure is driven to rotate by an external force to release its latching engagement with the supporting structure, the first hinge structure drives the supporting structure to rotate, and at the same time the supporting structure drives the actuating structure to swing away from the supporting structure.

[0014] Preferably, one end of the support structure is rotatably mounted around the support structure mounting axis, and the other end is fastened to the actuation structure. One end of the actuation structure is rotatably mounted around the actuation structure mounting axis, and the operating component is rotatably mounted around the operating component mounting axis.

[0015] Preferably, the mounting structure is a contact mounting shaft, and the support structure mounting shaft, actuation structure mounting shaft, operating component mounting shaft and contact mounting shaft are arranged in parallel and located at the four vertices of a quadrilateral.

[0016] Preferably, when the movable contact and the stationary contact are closed, the torque applied by the first hinge structure to the support structure is equal in magnitude and opposite in direction to the torque applied by the actuation structure to the support structure, and the lever arm of the force applied by the actuation structure to the support structure is greater than the lever arm of the force applied by the first hinge structure to the support structure.

[0017] Preferably, the support structure guide structure is a waist-shaped guide hole provided on the support structure, the first hinge structure is a hinge shaft, the first transmission structure is rotatably connected to the second transmission structure through the hinge shaft, and the hinge shaft is slidably inserted into the waist-shaped guide hole of the jump buckle structure.

[0018] Preferably, the support structure includes a support structure locking part and a support structure driving part; the actuation structure includes an actuation structure locking part and an actuation structure driven part; the support structure locking part and the actuation structure locking part overlap and limit each other to make the support structure and the actuation structure fasten together; after the actuation structure is driven to rotate by an external force to release the fastening engagement with the support structure, the first hinge structure drives the support structure to rotate, and the support structure drives the actuation structure to rotate away from the support structure through the cooperation of the support structure driving part and the actuation structure driven part.

[0019] Preferably, the operating system further includes an actuation structure return spring, which is a torsion spring, sleeved on the actuation structure mounting shaft, with one end limited and the other end cooperating with the actuation structure.

[0020] The switching device of the present invention has a compact operating system structure and occupies little space. When the moving contact and the stationary contact are closed, the moving contact can slide relative to the stationary contact, thereby removing foreign matter from the surfaces of the moving and stationary contacts through relative friction, which helps to maintain and improve the conductivity of the contact system. Moreover, the moving and stationary contacts form a double slider mechanism, which helps to increase the distance of friction between the moving contact and the surface of the stationary contact, and further improves the effect of removing foreign matter. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the switching device of the present invention, with the switching device in the closed state;

[0022] Figure 2 This is a schematic diagram of the switching device of the present invention, showing the switching device in the open state;

[0023] Figure 3 This is a schematic diagram of the switching device of the present invention, with the switching device in the tripped state. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-3 The given embodiments further illustrate specific implementations of the switching device of the present invention. The switching device of the present invention is not limited to the descriptions of the following embodiments.

[0025] like Figure 1-3As shown, the switching device of the present invention includes an operating system and a contact system. The contact system includes a movable contact 6, a stationary contact 8, and a mounting structure 6s. The movable contact 6 includes a first guide structure 6-0 and a second guide structure 6-1 respectively disposed at one end and the middle of the movable contact 6. The other end of the movable contact 6 cooperates with the stationary contact 8. The movable contact 6 is rotatably mounted on the mounting structure 6s via the first guide structure 6-0. The operating system includes a positioning structure, an operating member 2, a support structure 4, and an actuation structure 5 respectively rotatably disposed, a first transmission structure 3, a second transmission structure 7, a second hinge structure 6-7m, and a guide structure 9. The operating member 2 is limited by the positioning structure at both ends of its swing stroke. The working part 2 is rotatably connected to one end of the first transmission structure 3. The other end of the first transmission structure 3 is rotatably connected to one end of the second transmission structure 7 through the first hinge structure. The other end of the second transmission structure 7 is connected to the second hinge structure 6-7m. The second hinge structure 6-7m cooperates with the second guide structure 6-1 and is slidably disposed on the guide structure 9. The support structure 4 is locked with the actuation structure 5. The support structure 4 includes a support structure guide structure 4-2. The first hinge structure is slidably disposed on the support structure guide structure 4-2. During the closing or opening process of the movable contact 6 and the stationary contact 8, the first guide structure 6-0 moves relative to the mounting structure 6s and the second guide structure 6-1 moves relative to the second hinge structure 6-7m. Furthermore, during the closing or opening process of the movable contact 6 and the stationary contact 8, the first hinge structure slides on the support structure guide structure 4-2; when the operating component 2 drives the operating system to perform the closing or opening operation, the support structure 4 and the actuating structure 5 maintain a latching engagement and remain stationary; after the actuating structure 5 rotates to release its latching engagement with the support structure 4, the operating system disengages, and the movable contact 6 and the stationary contact 8 separate.

[0026] The "fastening engagement between the support structure 4 and the actuation structure 5" refers to the two being detachably connected together through structural features to form a fastening engagement. The actuation structure 5 can disengage from the fastening engagement with the support structure 4 when driven by an external force. Specifically, for example... Figure 2 As shown, the support structure locking part 4-0 of the support structure 4 and the actuation structure locking part 5-0 of the actuation structure 5 overlap and limit each other to achieve the snap-fit ​​cooperation between the support structure 4 and the actuation structure 5.

[0027] The switching device of the present invention has a compact operating system structure and occupies little space. When the moving contact and the stationary contact are closed, the moving contact can slide relative to the stationary contact, thereby removing foreign matter (such as oxide film, impurity particles, etc.) from the surfaces of the moving contact and the stationary contact through relative friction, which is beneficial to maintaining and improving the conductivity of the contact system. Moreover, the moving contact and the stationary contact constitute a double slider mechanism, which is beneficial to increasing the distance of friction between the moving contact and the surface of the stationary contact, and further improving the effect of removing foreign matter.

[0028] like Figure 1-3 As shown, the first guide structure 6-0 is a waist-shaped hole or a waist-shaped groove, and the second guide structure 6-1 is a waist-shaped hole or a waist-shaped groove; the mounting structure 6s is a contact mounting shaft, and the second hinge structure 6-7m is a contact hinge shaft.

[0029] Specifically, in the switching device of the present invention, both the first guide structure 6-0 and the second guide structure 6-1 are preferably oblong holes, namely an end oblong hole and a middle oblong hole, respectively; for example Figure 2 As shown, when the switching device of the present invention is in the open state, the movable contact 6 and the stationary contact 8 are separated. The left end of the oblong hole at the end of the movable contact 6 is limited and matched with the contact mounting shaft. The operating member 2 is in the open position. When the operating member 2 drives the movable contact 6 to move through the first transmission structure 3 and the second transmission structure 7, the second hinge structure 6-7m slides along the guide structure 9 and the second guide structure 6-1 at the same time. When the operating member 2 swings towards the closed position, it drives the movable contact 6 to swing through the first transmission structure 3 and the second transmission structure 7. Before the movable contact 6 contacts the stationary contact 8, the end slotted hole forms a hinged connection with the contact mounting shaft. The movable contact 6 rotates around the contact mounting shaft. After the movable contact 6 contacts the stationary contact 8, the movable contact 6 slides along the contact surface of the stationary contact 8. At the same time, the movable contact 6 begins to rotate about the contact hinge shaft, causing the end slotted hole to begin to move relative to the contact mounting shaft. Moreover, the middle slotted hole of the movable contact 6 also moves relative to the contact hinge shaft. Thus, the movable contact 6 and the stationary contact 8 constitute a double slider mechanism.

[0030] like Figure 1-3 As shown, the guide structure 9 is a waist-shaped guide groove, and the contact hinge shaft is slidably inserted into the waist-shaped guide groove. Furthermore, the extending direction of the waist-shaped guide groove intersects the extending direction of the central waist-shaped hole. Specifically, the waist-shaped guide groove is fixedly installed and can be installed on a separate component or on a mounting housing or bracket used to install and accommodate the operating system.

[0031] like Figure 1-3As shown, the positioning structure includes a first positioning structure 1-0 and a second positioning structure 1-1 arranged at relatively intervals, which respectively limit the operation member 2 at both ends of its swing stroke. The operator moves the operation member 2 to switch between the two ends of its swing stroke to drive the switch device to close or open. Specifically, the positioning structure can be implemented by a mounting housing or bracket for installing and accommodating the operating system, or it can be implemented separately.

[0032] like Figure 1-3 As shown, the operating component 2 includes an operating component operating part 2-0 and an operating component connecting part 2-1. The operating component connecting part 2-1 is rotatably disposed and rotatably connected to one end of the first transmission structure 3. The operating component operating part 2-0 is connected to the operating component connecting part 2-1 and swings between the first positioning structure 1-0 and the second positioning structure 1-1. At both ends of the swing stroke of the operating component 2, it is respectively limited and cooperated with the first positioning structure 1-0 and the second positioning structure 1-1.

[0033] The contact system also includes a contact spring. One end of the contact spring is fixed, and the other end cooperates with the movable contact 6, applying a force to the movable contact 6. When the movable contact 6 and the stationary contact 8 are closed, the movable contact 6 presses against the stationary contact 8 to ensure a certain closing pressure between them, thereby ensuring good conductivity of the contact system. During the separation process of the movable contact 6 and the stationary contact 8, the contact spring provides a driving force for the movable contact 6 to swing away from the stationary contact 8, thereby enabling the movable contact 6 to quickly separate from the stationary contact 8, which helps improve the breaking performance of the switching device. Specifically, as shown... Figure 1 In the direction shown, when the movable contact 6 and the stationary contact 8 are closed, the contact spring applies a force to the movable contact 6, causing the movable contact 6 to tend to rotate clockwise around the contact hinge axis 6-7m, thus pressing the movable contact 6 against the stationary contact. Figure 1 and 2 In the direction shown, during the separation process between the movable contact 6 and the stationary contact 8, the contact spring applies a force to the movable contact 6, causing it to first rotate clockwise around its contact point with the stationary contact 8, so that the left end of the end slot (i.e., the first guide structure 6-0) contacts the contact mounting shaft (i.e., the mounting structure 6s). Then, the contact spring causes the movable contact 6 to rotate counterclockwise around the contact mounting shaft, causing the movable contact 6 to separate from and move away from the stationary contact 8. It should be noted that the "separation process between the movable contact 6 and the stationary contact 8" includes the separation process caused by the operating system performing a tripping operation driven by the operating component 2, and the separation process caused by the operating system tripping.

[0034] One end of the contact spring is fixedly mounted, and the other end mates with the portion of the movable contact 6 located between the first oblong hole 6-0 and the second oblong hole 6-1. Furthermore, the fixed end of the contact spring can be fixedly mounted on the mounting housing or bracket.

[0035] The contact spring is a torsion spring, which is sleeved on the contact mounting shaft.

[0036] In other embodiments, the contact spring may also be a tension spring or a torsion spring.

[0037] like Figure 1-3 As shown, the switching device further includes a contact limiting structure 1-2, which is fixedly installed. After the movable contact 6 and the stationary contact 8 separate, the movable contact 6 is limited by the contact limiting structure 1-2. Furthermore, after the movable contact 6 and the stationary contact 8 separate, a contact spring applies a force to the movable contact 6, causing it to abut against the contact limiting structure 1-2 and engage with it. The contact limiting structure 1-2 and the stationary contact 8 are located on opposite sides of the movable contact 6.

[0038] Specifically, the positioning structure can be implemented by a portion of the mounting housing or bracket for installing and accommodating the operating system, or by a separate configuration.

[0039] like Figure 1-3 As shown, one end of the support structure 4 is rotatably mounted around the support structure mounting shaft 4s, and the other end is locked with the actuation structure 5. One end of the actuation structure 5 is rotatably mounted around the actuation structure mounting shaft 5s, and the operating member 2 is rotatably mounted around the operating member mounting shaft 2s.

[0040] like Figure 1-3 As shown, the support structure mounting shaft 4s, actuation structure mounting shaft 5s, operating component mounting shaft 2s, and contact component mounting shaft are arranged in parallel and located at the four vertices of a quadrilateral. Further, as... Figure 1-3 As shown, the support structure mounting shaft 4s, the actuation structure mounting shaft 5s, and the operating component mounting shaft 2s are respectively located at the three vertices of a triangle. Further, as... Figure 1-3 As shown, the support structure mounting shaft 4s, the actuation structure mounting shaft 5s, and the operating component mounting shaft 2s are respectively located at the three vertices of an obtuse triangle, and the operating component mounting shaft 2s is located at the vertex corresponding to the obtuse angle of the triangle; the length of the line connecting the operating component mounting shaft 2s and the actuation structure mounting shaft 5s is less than the length of the line connecting the support structure mounting shaft 4s and the contact component mounting shaft, and the operating component mounting shaft 2s and the actuation structure mounting shaft 5s are located on the same side of the line connecting the support structure mounting shaft 4s and the contact component mounting shaft.

[0041] like Figure 1As shown, when the movable contact 6 and the stationary contact 8 are closed, the torque applied by the first hinge structure to the supporting structure 4 is equal in magnitude and opposite in direction to the torque applied by the actuating structure 5 to the supporting structure 4. The lever arm of the force applied by the actuating structure 5 to the supporting structure 4 is greater than the lever arm of the force applied by the first hinge structure to the supporting structure 4. Furthermore, the lever arm of the force applied by the actuating structure 5 to the supporting structure 4 is six times that of the force applied by the first hinge structure to the supporting structure 4, which can effectively reduce the force exerted by the supporting structure 4 on the actuating structure 5, thereby reducing the frictional force when the two separate, and thus helping to reduce the tripping force of the operating mechanism. Specifically, as... Figure 1 In the indicated direction, the first hinge structure applies a torque to the support structure 4, causing it to rotate clockwise, and the actuation structure 5 applies a torque to the support structure 4, actually causing it to rotate clockwise.

[0042] like Figure 1-3 As shown, the support structure guide structure 4-2 is a support structure waist-shaped guide hole provided on the support structure 4, the first hinge structure is a hinge shaft, the first transmission structure 3 is rotatably connected to the second transmission structure 7 through the hinge shaft, and the hinge shaft is slidably inserted into the support structure waist-shaped guide hole.

[0043] In another embodiment, the supporting structure guide structure 4-2 can also be a guide rib, and the first hinge structure is provided with a guide groove that cooperates with the guide rib for guidance and limiting.

[0044] The operating system also includes an actuation structure return spring, which is a torsion spring, sleeved on the actuation structure mounting shaft 5s, with one end limited and the other end engaging with the actuation structure 5; the actuation structure return spring applies a reset force to the actuation structure 5, causing the actuation structure 5 to return to the locking position to restore the locking engagement with the support structure 4.

[0045] In other embodiments, the actuation structure return spring may also be a tension spring or a compression spring.

[0046] like Figure 1-2As shown, when the operating component 2 drives the movable contact 6 to close or open with the stationary contact 8 through the first transmission structure 3 and the second transmission structure 7, the support structure 4 and the actuation structure 5 maintain a latching engagement and remain stationary (that is, the support structure guide structure 4-2 remains stationary), and the first hinge structure slides along the support structure guide structure 4-2. The positioning structure, operating component 2, first transmission structure 3, second transmission structure 7, and movable contact 6 constitute a five-bar linkage mechanism with 2 degrees of freedom (a five-bar linkage mechanism without a cam has 4 movable links and 5 hinge pairs, with degrees of freedom = 4x3 - 2x5 = 2). Since the first hinge structure slides on the cam formed by the support structure guide structure 4-2, it restricts 1 degree of freedom, thus forming a cam-five-bar linkage mechanism with 1 degree of freedom. When the switching device is normally closed or opened, the tripping mechanism (that is, the support structure 4 and the actuation structure 5) is in a stationary state, which helps to improve the operational reliability of the operating system. Specifically, as shown... Figure 1-2 As shown, the operating member 2 rotates clockwise or counterclockwise to drive the movable contact member 6 and the stationary contact member 8 to close or open via the first transmission structure 3 and the second transmission structure 7, that is, to drive the switching device to close or open.

[0047] like Figure 1 and 3 As shown, when the switching device is in the closed state, the actuating structure 5 is driven to rotate by an external force (such as the driving force of a short-circuit protection mechanism, an overload protection mechanism, or a shunt trip unit) to release its latching engagement with the supporting structure 4. The first hinge structure drives the supporting structure 4 to rotate, while the supporting structure 4 drives the actuating structure 5 to swing away from the supporting structure 4 and limits the actuating structure 5 to the tripped position to prevent the actuating structure 5 from swinging closer to the supporting structure 4 (e.g., ...). Figure 3 As shown, the support structure 4 and the actuation structure 5 are mutually restrictive to prevent clockwise rotation. After the actuation structure 5 and the support structure 4 are released from their latching engagement, the original cam-five-bar linkage mechanism is transformed into a six-bar linkage mechanism. The six-bar linkage mechanism has two degrees of freedom, and the movable contact 6 rotates to the disconnected position under the drive of the contact spring. The short-circuit protection mechanism is preferably an electromagnetic trip unit, and the overload protection mechanism is preferably a thermal trip unit.

[0048] like Figure 1-3As shown, the support structure 4 includes a support structure locking part 4-0 and a support structure driving part 4-1; the actuation structure 5 includes an actuation structure locking part 5-0 and an actuation structure driven part 5-1; when the support structure locking part 4-0 and the actuation structure locking part 5-0 overlap and limit the engagement, the support structure 4 and the actuation structure 5 are engaged; after the actuation structure 5 is driven to rotate by an external force to release the engagement with the support structure 4, the first hinge structure drives the support structure 4 to rotate, and the support structure 4, through the cooperation of the support structure driving part 4-1 and the actuation structure driving part 5-1, drives the actuation structure 5 to rotate away from the support structure 4 and limits the actuation structure 5 to the disengaged position.

[0049] like Figure 2 As shown, when the switching device is in the open state, the moving contact 6 and the stationary contact 8 are separated, and there is a fitting gap between the support structure locking part 4-0 and the actuation structure locking part 5-0 to ensure that the support structure 4 and the tripping structure 5 can be reliably engaged when the switching device is closed.

[0050] like Figure 1-3 As shown, this is one layout of the switching device of the present invention: the operating member 2 and the first transmission structure 3 are located on one side of the actuation structure 5, the movable contact member 6 and the guide structure 9 are located on the other side of the actuation structure 5, one end of the second transmission structure 7 is rotatably connected to the first transmission structure 3, and the other end is connected to the contact member hinge shaft; the operating member mounting shaft 2s and the support structure mounting shaft 4s are located on one side of the actuation structure 5, and the contact member mounting shaft is located on the other side of the actuation structure 5; the operating member mounting shaft 2s, the actuation structure mounting shaft 5s, the support structure mounting shaft 4s and the contact member mounting shaft are located on a quadrilateral. At the four vertices of the quadrilateral, the operating component mounting shaft 2s and the actuation structure mounting shaft 5s are located at the two ends of one side of the quadrilateral, and the support structure mounting shaft 4s and the contact component mounting shaft are located at the two ends of the other side of the quadrilateral. The two sides are arranged opposite each other. The vertex angle of the quadrilateral corresponding to the operating component mounting shaft 2s is obtuse, the vertex angle of the quadrilateral corresponding to the actuation structure mounting shaft 5s is obtuse, the vertex angle of the quadrilateral corresponding to the support structure mounting shaft 4s is acute, and the vertex angle of the quadrilateral corresponding to the contact component mounting shaft is acute. The short-circuit protection mechanism and the overload protection mechanism are located on both sides of the movable contact 6.

[0051] It should be noted that the layout of the switching device of the present invention described above is only one embodiment. The layout of the switching device can be adjusted according to actual needs. For example, of the operating element mounting shaft 2s, actuation structure mounting shaft 5s, support structure mounting shaft 4s, and contact element mounting shaft, three are located at the three vertices of a triangle, and the other is located on one side of the triangle. For example, the vertex angle of the quadrilateral corresponding to the operating element mounting shaft 2s can also be designed as an acute angle or a right angle as needed. In summary, all foreseeable adjustments based on the layout of the switching device of the present invention should fall within the protection scope of the present invention, and the protection scope of the switching device of the present invention is not limited to the embodiments listed in the text.

Claims

1. A switching device comprising an operating system and a contact system; characterized in that: The contact system includes a movable contact (6), a stationary contact (8), and a mounting structure (6s). The movable contact (6) includes a first guide structure (6-0) and a second guide structure (6-1) respectively disposed at one end and the middle of the movable contact (6). The other end of the movable contact (6) cooperates with the stationary contact (8). The movable contact (6) is rotatably mounted on the mounting structure (6s) via the first guide structure (6-0). The operating system includes a positioning structure, a rotating operating component (2), a support structure (4), and an actuation structure (5), a first transmission structure (3), a second transmission structure (7), a second hinge structure (6-7m), and a guide structure (9). The operating component (2) is limited by the positioning structure at both ends of its swing stroke. The operating component (2) and the first transmission structure (6-1) are respectively engaged with the positioning structure. 3) One end is rotatably connected, and the other end of the first transmission structure (3) is rotatably connected to one end of the second transmission structure (7) through the first hinge structure. The other end of the second transmission structure (7) is connected to the second hinge structure (6-7m). The second hinge structure (6-7m) cooperates with the second guide structure (6-1) and is slidably disposed on the guide structure (9). The support structure (4) is fastened to the actuation structure (5). The support structure (4) includes a support structure guide structure (4-2). The first hinge structure is slidably disposed on the support structure guide structure (4-2). During the closing or opening process of the movable contact (6) and the stationary contact (8), the first guide structure (6-0) moves relative to the mounting structure (6s) and the second guide structure (6-1) moves relative to the second hinge structure (6-7m).

2. The switching device according to claim 1, characterized in that: The first guide structure (6-0) is a waist-shaped hole or a waist-shaped groove, and the second guide structure (6-1) is a waist-shaped hole or a waist-shaped groove; the mounting structure (6s) is a contact mounting shaft, and the second hinge structure (6-7m) is a contact hinge shaft; the guide structure (9) is a waist-shaped guide groove, and the contact hinge shaft is slidably inserted into the waist-shaped guide groove.

3. The switching device according to claim 1, characterized in that: The contact system also includes a contact spring, one end of which is fixedly set and the other end cooperates with the movable contact (6) to apply force to the movable contact (6). When the movable contact (6) and the stationary contact (8) are closed, the movable contact (6) presses the stationary contact (8) together. During the process of the movable contact (6) and the stationary contact (8) separating, the contact spring provides a driving force for the movable contact (6) to swing away from the stationary contact (8).

4. The switching device according to claim 3, characterized in that: The contact spring is a torsion spring, and the mounting structure (6s) is a contact mounting shaft, with the contact spring sleeved on the contact mounting shaft.

5. The switching device according to claim 3 or 4, characterized in that: One end of the contact spring is fixedly installed, and the other end cooperates with the part of the movable contact (6) located between the first guide structure (6-0) and the second guide structure (6-1).

6. The switching device according to claim 3, characterized in that: The switching device also includes a contact limiting structure (1-2). After the movable contact (6) and the stationary contact (8) are separated, the movable contact (6) is limited by the contact limiting structure (1-2).

7. The switching device according to claim 1, characterized in that: When the operating element (2) drives the movable contact element (6) to close or open with the stationary contact element (8) through the first transmission structure (3) and the second transmission structure (7), the support structure (4) and the actuation structure (5) maintain the latching engagement and remain stationary.

8. The switching device according to claim 1 or 7, characterized in that: When the switch is in the closed state, the actuation structure (5) is driven to rotate by external force to release its latching engagement with the support structure (4). The first hinge structure drives the support structure (4) to rotate, and at the same time the support structure (4) drives the actuation structure (5) to swing away from the support structure (4).

9. The switching device according to claim 1, characterized in that: One end of the support structure (4) is rotatably mounted around the support structure mounting shaft (4s), and the other end is fastened to the actuation structure (5). One end of the actuation structure (5) is rotatably mounted around the actuation structure mounting shaft (5s), and the operating component (2) is rotatably mounted around the operating component mounting shaft (2s).

10. The switching device according to claim 9, characterized in that: The mounting structure (6s) is a contact mounting shaft; the support structure mounting shaft (4s), actuation structure mounting shaft (5s), operating component mounting shaft (2s) and contact component mounting shaft are arranged in parallel and are located at the four vertices of a quadrilateral respectively.

11. The switching device according to claim 1 or 9, characterized in that: When the active contact (6) and the stationary contact (8) are closed, the torque applied by the first hinge structure to the support structure (4) is equal in magnitude and opposite in direction to the torque applied by the actuation structure (5) to the support structure (4). The lever arm of the actuation structure (5) to the support structure (4) is greater than the lever arm of the first hinge structure to the support structure (4).

12. The switching device according to claim 1, characterized in that: The support structure guide structure (4-2) is a waist-shaped guide hole of the support structure (4) and the first hinge structure is a hinge shaft. The first transmission structure (3) is rotatably connected to the second transmission structure (7) through the hinge shaft and the hinge shaft is slidably inserted into the waist-shaped guide hole of the jump buckle structure.

13. The switching device according to claim 8, characterized in that: The support structure (4) includes a support structure locking part (4-0) and a support structure driving part (4-1); the actuation structure (5) includes an actuation structure locking part (5-0) and an actuation structure driven part (5-1); the support structure locking part (4-0) and the actuation structure locking part (5-0) overlap and limit each other to make the support structure (4) and the actuation structure (5) hook together; after the actuation structure (5) is driven to rotate by external force to release the hook together with the support structure (4), the first hinge structure drives the support structure (4) to rotate, and the support structure (4) drives the actuation structure (5) to rotate away from the support structure (4) through the cooperation of the support structure driving part (4-1) and the actuation structure driven part (5-1).

14. The switching device according to claim 9, characterized in that: The operating system also includes an actuation structure return spring, which is a torsion spring, sleeved on the actuation structure mounting shaft (5s), with one end limited and the other end cooperating with the actuation structure (5).

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