An operating mechanism for a changeover switch

Abstract

The application relates to an operating mechanism of a change-over switch, which comprises a shell, a change-over operating assembly, a rotating shaft arranged in the shell, two tension springs arranged between the shell and one end of the rotating shaft respectively, a handle arranged on the other end of the rotating shaft in linkage, two conical gears arranged on the rotating shaft symmetrically, a driving conical gear arranged on one side of the shell and meshing with the two conical gears, a driven conical gear arranged on the other side of the shell and meshing with the two conical gears, positioning members arranged on the rotating shaft between the two conical gears and abutting against the driving conical gear and the driven conical gear respectively, and a micro-motion switch monitoring module arranged in the shell and matched with the driving conical gear and the driven conical gear. The application has the advantages of simple structure, stable and reliable performance, long service life and high safety.

Description

Technical Field

[0001] This invention relates to the field of changeover switch technology, and more specifically to an operating mechanism for a changeover switch. Background Technology

[0002] Currently, a changeover switch is a switching device used to switch between two or more power sources or loads. Changeover switches are mostly used for infrequent connection and disconnection of circuits and for connecting electrical loads. Changeover switches have a wide range of applications, serving as circuit control switches, test equipment switches, motor control switches, and master control switches. Changeover switches can carry relatively large currents, therefore they typically require high safety features. However, the existing operating mechanisms of changeover switches have complex structural designs, resulting in defects such as unreliable performance, low safety, and short service life. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an operating mechanism for a changeover switch that is simple in structure, stable and reliable in performance, long in service life, and highly safe.

[0004] To achieve the above objectives, the present invention employs an operating mechanism for a changeover switch, comprising a housing and a changeover operating component. The changeover operating component includes a rotating shaft rotatably disposed within the housing, two tension springs respectively disposed between the housing and one end of the rotating shaft, a handle linked to the other end of the rotating shaft, two bevel gears symmetrically disposed on the rotating shaft, a driving bevel gear rotatably disposed on one side of the housing and meshing with the two bevel gears, and a driven bevel gear rotatably disposed on the other side of the housing and meshing with the two bevel gears. Positioning elements are respectively provided on the rotating shaft between the two bevel gears, abutting against the driving bevel gear and the driven bevel gear. A micro switch monitoring module that cooperates with the driving bevel gear and the driven bevel gear is disposed within the housing.

[0005] The beneficial effects of the above structure are as follows: The switching operation component of this operating mechanism adopts a bevel gear set structure design, which is simple in design and provides smoother transmission. Positioning components for the driving and driven bevel gears are provided on the rotating shaft, ensuring smoother and more reliable transmission between the two bevel gears and the driving and driven bevel gears. During operation, the handle drives the rotating shaft to rotate, and the two bevel gears respectively drive the driving and driven bevel gears to rotate. The driven bevel gear drives the moving contact frame of the contact system to rotate, thereby realizing the on / off operation of the operating mechanism. Furthermore, the micro-switch monitoring module can monitor the working positions of the driving and driven bevel gears, thus enabling monitoring of the operating status of the operating mechanism and improving its reliability. Therefore, the operating mechanism of this changeover switch has the advantages of simple structure, stable and reliable performance, long service life, and high safety.

[0006] Specifically, the microswitch monitoring module includes two cams, a lever disposed between the two cams, and a microswitch assembly disposed within the housing and cooperating with the lever. The two cams are respectively linked and mounted on the driving bevel gear and the driven bevel gear. The lever moves with the two cams and can trigger the microswitch assembly, thereby turning the microswitch assembly on or off. The microswitch monitoring module can monitor the working positions of the driving bevel gear and the driven bevel gear, thus enabling the monitoring of the operating status of the operating mechanism and improving its reliability and safety.

[0007] Specifically, the micro switch assembly includes a housing within the casing, two micro switches respectively disposed within the housing, a push rod slidably mounted on the housing and cooperating with the two micro switches, and a spring disposed between the push rod and the housing. A limiting part is provided on one side of the push rod, which engages with a lever. The push rod moves with the lever and can trigger the two micro switches, thus enabling the two micro switches to be switched on or off. The micro switches and push rod are housed within the housing, and the micro switch assembly is integrated and modularly assembled within the casing, making assembly more convenient and improving the assembly efficiency of the operating mechanism.

[0008] Specifically, the housing includes a bracket and a cover plate mounted on the bracket. The two microswitches are respectively disposed in slots on one side of the bracket, and a sliding groove is provided on the other side of the bracket. The push rod is slidably disposed in the sliding groove of the bracket, and the cover plate is provided with a sliding hole through which the limiting part can pass. The two microswitches and the push rod are integrated on the bracket and form a modular design, which facilitates the assembly of the microswitch monitoring module with the housing and improves the assembly efficiency of the operating mechanism.

[0009] Specifically, the cover plate has multiple hooks on one side, which respectively engage with one side of the bracket, forming a snap-fit ​​connection between the cover plate and the bracket. This snap-fit ​​assembly method facilitates easier and more convenient assembly of the cover plate and bracket.

[0010] Specifically, a handle operating groove is provided on one side of the driving bevel gear, protruding from the housing. This handle operating groove allows the user to operate the mechanism from the side, enabling multi-directional operation and facilitating user convenience. Attached Figure Description

[0011] Figure 1 This is a perspective view of an embodiment of the present invention.

[0012] Figure 2 This is a cross-sectional view of an embodiment of the present invention.

[0013] Figure 3This is an internal structural diagram of the present invention.

[0014] Figure 4 This is a perspective view of the micro switch assembly after removing the cover plate in an embodiment of the present invention.

[0015] Figure 5 This is a perspective view of the cover plate of the present invention. Detailed Implementation

[0016] like Figures 1-5 As shown, this embodiment of the invention provides an operating mechanism for a changeover switch, including a housing 10 and a changeover operating component 20. The changeover operating component 20 includes a rotating shaft 21 rotatably disposed within the housing 10, two tension springs 22 respectively disposed between one end of the housing 10 and one end of the rotating shaft 21, a handle 23 linked to the other end of the rotating shaft 21, two bevel gears 24 symmetrically disposed on the rotating shaft 21, a driving bevel gear 25 rotatably disposed on one side of the housing 10 and meshing with the two bevel gears 24, and a driven bevel gear 26 rotatably disposed on the other side of the housing 10 and meshing with the two bevel gears 24. Positioning elements 27 are provided on the rotating shaft 21 corresponding to the two bevel gears 24, respectively abutting against the driving bevel gear 25 and the driven bevel gear 26. A microswitch monitoring module 30, cooperating with the driving bevel gear 25 and the driven bevel gear 26, is disposed within the housing 10. A handle operating groove 251 is provided on one side of the driving bevel gear 25, protruding outside the housing 10. A handle operating groove is provided on the active bevel gear, allowing the user to operate the mechanism from the side, thus enabling multi-directional operation and facilitating user operation.

[0017] like Figure 3 , 4As shown in Figure 5, the microswitch monitoring module 30 includes two cams 31, a lever 32 disposed between the two cams 31, and a microswitch assembly 40 disposed within the housing 10 and cooperating with the lever 32. The two cams 31 are respectively linked to the driving bevel gear 25 and the driven bevel gear 26. The lever 32 moves with the two cams 31 and can trigger the microswitch assembly 40, thereby turning the microswitch assembly 40 on or off. The microswitch monitoring module can monitor the working positions of the driving bevel gear and the driven bevel gear, thereby enabling the monitoring of the working status of the operating mechanism and improving the reliability and safety of the operating mechanism. The microswitch assembly 40 includes a housing 41 disposed within the housing 10, two microswitches 42 respectively disposed within the housing 41, a push rod 43 slidably disposed on the housing 41 and cooperating with the two microswitches 42, and a spring 44 disposed between the push rod 43 and the housing 41. A limiting part 431 is provided on one side of the push rod 43, which is linked and cooperates with the lever 32. The push rod 43 moves with the lever 32 and can trigger the two microswitches 42, thereby turning the two microswitches 42 on or off. The microswitches and push rod are disposed within the housing, and the microswitch assembly is integrated and modularly assembled within the housing, making assembly more convenient and improving the assembly efficiency of the operating mechanism. The housing 41 includes a bracket 411 and a cover plate 412 mounted on the bracket 411. Two microswitches 42 are respectively disposed in slots 413 on one side of the bracket 411. A sliding groove 414 is provided on the other side of the bracket 411. A push rod 43 is slidably disposed in the sliding groove 414 of the bracket 411. The cover plate 412 has a sliding hole 415 through which the limiting part 431 passes. The two microswitches and the push rod are integrated on the bracket and form a modular design, facilitating the assembly of the microswitch monitoring module with the housing and improving the assembly efficiency of the operating mechanism. Multiple hooks 416 are provided on one side of the cover plate 412, which respectively engage with one side of the bracket 411, forming a snap-fit ​​connection between the cover plate 412 and the bracket 411. The snap-fit ​​assembly of the cover plate and the bracket facilitates assembly and makes assembly more convenient.

[0018] The switching mechanism's operating component employs a bevel gear set structure, which is simple and provides smoother transmission. Positioning components for the driving and driven bevel gears are installed on the rotating shaft, ensuring smoother and more reliable transmission between the two bevel gears and their respective driving and driven bevel gears. During operation, the handle drives the rotating shaft, which in turn drives the driving and driven bevel gears. The driven bevel gear then drives the moving contact frame of the contact system, thus enabling the connection or disconnection of the operating mechanism. Furthermore, the microswitch monitoring module can monitor the working positions of the driving and driven bevel gears, thereby monitoring the operating status of the mechanism and improving its reliability.

Claims

1. An operating mechanism for a changeover switch, comprising a housing and a changeover operating component, characterized in that: The switching operation component includes a rotating shaft rotatably disposed within the housing, two tension springs respectively disposed between the housing and one end of the rotating shaft, a handle linked to the other end of the rotating shaft, two bevel gears symmetrically disposed on the rotating shaft, a driving bevel gear rotatably disposed on one side of the housing and meshing with the two bevel gears, and a driven bevel gear rotatably disposed on the other side of the housing and meshing with the two bevel gears. Positioning elements are respectively provided on the rotating shaft between the two bevel gears, abutting against the driving and driven bevel gears. A micro-switch monitoring module that cooperates with the driving and driven bevel gears is disposed within the housing. A handle operation slot is provided on one side of the driving bevel gear, protruding outside the housing. During operation, the handle drives the rotating shaft to rotate, and the two bevel gears respectively drive the driving and driven bevel gears to rotate. The driven bevel gear can drive the moving contact frame of the contact system to rotate, thereby realizing the on / off operation of the operating mechanism.

2. The operating mechanism of the changeover switch according to claim 1, characterized in that: The micro switch monitoring module includes two cams, a lever disposed between the two cams, and a micro switch assembly disposed inside the housing and cooperating with the lever. The two cams are respectively linked on the driving bevel gear and the driven bevel gear. The lever moves with the two cams and is used to trigger the micro switch assembly to realize the connection or disconnection of the micro switch assembly.

3. The operating mechanism of the changeover switch according to claim 2, characterized in that: The micro switch assembly includes a housing inside the casing, two micro switches respectively disposed inside the housing, a push rod slidably disposed on the housing and cooperating with the two micro switches, and a spring disposed between the push rod and the housing. A limiting part is provided on one side of the push rod, which is linked and cooperates with the lever. The push rod moves with the lever and is used to trigger the two micro switches to realize the connection or disconnection of the two micro switches.

4. The operating mechanism of the changeover switch according to claim 3, characterized in that: The housing includes a bracket and a cover plate mounted on the bracket. The two microswitches are respectively mounted in slots on one side of the bracket. A sliding groove is provided on the other side of the bracket. The top rod is slidably mounted in the sliding groove of the bracket. A sliding hole is provided on the cover plate for the limiting part to pass through.

5. The operating mechanism of the changeover switch according to claim 4, characterized in that: The cover plate has multiple hooks on one side, which are respectively engaged with one side of the bracket, forming a snap-fit ​​connection between the cover plate and the bracket.

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