Automatic transfer switching equipment and dual-power equipment

Abstract

The utility model belongs to the technical field of low-voltage electrical appliances, and discloses an automatic transfer switching device and a dual-power supply device. The automatic transfer switching equipment comprises a shell, a display window is arranged on the shell, a contact system, an indicating structure, a rotating shaft, an operating mechanism and an electronic state indicating device are arranged in the shell, the indicating structure, the rotating shaft and the electronic state indicating device are arranged in the shell, and the operating mechanism drives the rotating shaft to rotate. When the moving contact is switched among a power supply I state, a power supply II state and a double-open state, the rotating shaft drives the indicating structure to rotate to a corresponding position so as to trigger a corresponding position of the electronic state indicating device and enable a corresponding indicating area to directly face a display window. A worker can conveniently identify whether the power supply II or the power supply I is used at the moment according to the information of the indication area observed from the display window, and the working stability of the automatic change-over switch is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to an automatic transfer switch and a dual power supply device. Background Technology

[0002] An automatic transfer switch is a device that can freely switch between two power sources (such as power source I and power source II). It is mainly used to ensure that the device automatically switches to power source II when power source I is interrupted, thereby maintaining the normal operation of the equipment.

[0003] In the prior art, when an automatic transfer switch switches between power supply I and power supply II, it is not possible to determine from the appearance whether power supply II or power supply I is being used.

[0004] Therefore, there is an urgent need to provide an automatic transfer switch and a dual power supply device to indicate the power status, facilitate timely identification, and ensure the stable operation of the automatic transfer switch. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic transfer switch and a dual power supply device to indicate the power status, facilitate timely identification, and ensure the working stability of the automatic transfer switch.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides an automatic transfer switch, which includes a housing, a display window on the housing, and a contact system, an indicator structure, a rotating shaft, an operating mechanism, and an electronic status indicator device inside the housing.

[0008] The contact system includes a first stationary contact, a second stationary contact, and a moving contact. The moving contact has a power supply state I connected to the first stationary contact, a power supply state II connected to the second stationary contact, and a dual-state disconnected from both the first and second stationary contacts. The rotating shaft is rotatably connected to the housing. One end of the rotating shaft is connected to the moving contact, and the other end of the rotating shaft is connected to the operating mechanism. The indicating structure is connected to the rotating shaft and has three indicating areas.

[0009] The operating mechanism is used to drive the rotating shaft to rotate, so that the moving contact rotates to switch between the power supply I state, the power supply II state and the dual state, and drive the indicator structure to rotate to trigger the corresponding position of the electronic status indicator device, and make the corresponding indicator area face the display window.

[0010] As an optional technical solution for an automatic transfer switch, the indicating structure includes a first gear and a second gear. The second gear is rotatably disposed within the housing. The first gear is fixed on the rotating shaft and meshes with the second gear. The indicating area is disposed on the second gear. The rotation of the rotating shaft drives the first gear to rotate to trigger the corresponding position of the electronic status indicating device, and the first gear drives the second gear to rotate so that the corresponding indicating area faces the display window.

[0011] As an optional technical solution for an automatic transfer switch, it also includes an electronic circuit board. The electronic status indicator includes three microswitches, all of which are electrically connected to the electronic circuit board. The three microswitches are a first switch, a second switch, and a third switch, with the second switch located between the first switch and the third switch.

[0012] The first gear has a tooth profile on its first side that meshes with the second gear, and a receiving groove on its second side;

[0013] When the moving contact is in the power supply II state, the first gear triggers the first switch and the second switch; when the moving contact is in the power supply I state, the first gear triggers the second switch and the third switch; when the moving contact is in the double-open state, the trigger button or spring of the second switch is placed in the receiving groove on the first gear to make the second switch in the released state.

[0014] As an optional technical solution for an automatic transfer switch, the first gear is provided with two anti-fooling protrusions, which are respectively located on two adjacent teeth of the first gear;

[0015] The second gear has a positioning tooth on its first side, and the three indicator areas are arranged sequentially along the circumferential surface of the second side of the second gear. The positioning tooth is arranged corresponding to the indicator area located in the middle position, and the positioning tooth is arranged between two adjacent tooth shapes with the anti-fooling protrusion.

[0016] As an optional technical solution for an automatic transfer switch, the second gear has an auxiliary plate and a tooth profile for cooperating with the first gear on its first side. The auxiliary plate has two notches, and the tooth profile of the second gear protrudes and is connected to the auxiliary plate. The tooth profile of the second gear includes the positioning tooth, and the positioning tooth is located between the two notches. Each anti-fooling protrusion is movably inserted into one of the notches.

[0017] As an optional technical solution for an automatic transfer switch, the first gear is provided with a baffle and teeth that cooperate with the second gear. The teeth of the first gear are protruding and connected to the baffle, and the baffle closes one end of all the tooth slots of the first gear.

[0018] As an optional technical solution for an automatic transfer switch, the first gear has two positioning protrusions on its inner side, and the rotating shaft has positioning grooves that correspond one-to-one with the positioning protrusions along its axial direction. The positioning protrusions are embedded in the positioning grooves so that the first gear is fixed on the rotating shaft.

[0019] As an optional technical solution for an automatic transfer switch, the housing is provided with a handle groove and indicator marks. The indicator marks are located on one side of the handle groove and correspond one-to-one with the indicator areas. The indicator marks are spaced apart along the length of the handle groove. The operating mechanism is provided with an operating wrench. The operating wrench is inserted into the handle groove and placed on the outside of the housing. The rotation of the operating mechanism drives the rotating shaft to rotate and rotates the operating wrench to the corresponding position of the indicator mark.

[0020] As an optional technical solution for an automatic transfer switch, the bottom of the housing is provided with a groove, the groove wall is provided with an elastic element, the groove is used to be engaged on the guide rail, and the elastic element is used to press against the side wall of the guide rail.

[0021] This utility model provides a dual power supply device, which includes a guide rail and the aforementioned automatic transfer switch, wherein the automatic transfer switch is detachably installed on the guide rail.

[0022] Beneficial effects:

[0023] This utility model provides an automatic transfer switch, which includes a housing with a display window. Inside the housing are a contact system, an indicator structure, a rotating shaft, an operating mechanism, and an electronic status indicator. The contact system includes a first stationary contact, a second stationary contact, and a moving contact. The moving contact has a power supply state I connected to the first stationary contact, a power supply state II connected to the second stationary contact, and a dual-state disconnected from both the first and second stationary contacts. The rotating shaft is rotatably connected to the housing, with one end connected to the moving contact and the other end connected to the operating mechanism. The indicator structure is connected to the rotating shaft and has three indicator areas. The operating mechanism drives the rotating shaft to rotate, causing the moving contact to rotate to switch between power supply state I, power supply state II, and dual-state, and also drives the indicator structure to rotate to trigger the corresponding position of the electronic status indicator, so that the corresponding indicator area faces the display window. By setting an indicator structure, a rotating shaft, and an electronic status indicator device inside the housing, the rotating shaft is driven to rotate by the operating mechanism. When the moving contact switches between power supply I state, power supply II state, and dual state, the rotating shaft also drives the indicator structure to rotate to the corresponding position, thereby triggering the corresponding position of the electronic status indicator device. This ensures that the corresponding indicator area faces the display window, allowing the operator to identify whether power supply II or power supply I is being used based on the information observed from the indicator area in the display window. This effectively ensures the operational stability of the automatic transfer switch.

[0024] This utility model provides a dual-power supply device, which includes a guide rail and the aforementioned automatic transfer switch, which is detachably mounted on the guide rail. When power supply I of the dual-power supply device fails, the moving contact of the automatic transfer switch will switch to connect with the second stationary contact to connect power supply II, ensuring that the dual-power supply device continues to operate. Attached Figure Description

[0025] Figure 1 This is a first-view structural schematic diagram of the automatic transfer switch provided in this embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the indicating structure and electronic status indicating device provided in this embodiment of the utility model;

[0027] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0028] Figure 4 This is a partial structural schematic diagram of the rotating shaft provided in an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the second gear provided in an embodiment of the present invention;

[0030] Figure 6This is a schematic diagram of the first structure of the first gear and the second gear provided in this embodiment of the utility model;

[0031] Figure 7 This is a schematic diagram of the second structure of the first gear and the second gear provided in this embodiment of the utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the first gear provided in an embodiment of the present invention;

[0033] Figure 9 This is a second-view structural schematic diagram of the automatic transfer switch provided in this embodiment of the present invention.

[0034] In the picture:

[0035] 10. Outer casing; 101. Display window; 102. Recess; 103. U-shaped groove; 104. Handle groove; 105. Indicator mark;

[0036] 2. Indicator structure; 21. First gear; 211. Receiving groove; 212. Anti-foolproof protrusion; 213. Baffle; 214. Positioning protrusion; 22. Second gear; 221. First indicating area; 222. Second indicating area; 223. Third indicating area; 224. Positioning tooth; 225. Auxiliary plate; 2251. Notch;

[0037] 3. Rotating shaft; 31. Positioning groove;

[0038] 4. Electronic status indicator; 41. First switch; 42. Second switch; 43. Third switch;

[0039] 7. Elastic components;

[0040] 8. Operating mechanism; 81. Operating wrench. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0045] like Figures 1 to 6 As shown, this embodiment provides an automatic transfer switch, which includes a housing 10 with a display window 101. Inside the housing 10 are a contact system, an indicator structure 2, a rotating shaft 3, an operating mechanism 8, and an electronic status indicator 4. The contact system includes a first stationary contact, a second stationary contact, and a moving contact. The moving contact has a power supply state I connected to the first stationary contact, a power supply state II connected to the second stationary contact, and a dual-state disconnected from both the first and second stationary contacts. The rotating shaft 3 is rotatably connected to the housing 10, with one end connected to the moving contact and the other end connected to the operating mechanism 8. The indicator structure 2 is connected to the rotating shaft 3 and has three indicator areas. The operating mechanism 8 drives the rotating shaft 3 to rotate, causing the moving contact to rotate and switch between power supply state I, power supply state II, and dual-state. It also drives the indicator structure 2 to rotate, triggering the corresponding position of the electronic status indicator 4 and positioning the corresponding indicator area opposite the display window 101.

[0046] By setting an indicator structure 2, a rotating shaft 3, and an electronic status indicator 4 inside the housing 10, and using the operating mechanism 8 to drive the rotating shaft 3 to rotate, when the moving contact switches between power supply I state, power supply II state, and dual state, the rotating shaft 3 will also drive the indicator structure 2 to rotate to the corresponding position, thereby triggering the corresponding position of the electronic status indicator 4, and making the corresponding indicator area face the display window 101. This allows the operator to identify whether power supply II or power supply I is being used based on the information observed from the indicator area in the display window 101, effectively ensuring the working stability of the automatic transfer switch.

[0047] It is understood that the first stationary contact is connected to power supply I, and the second stationary contact is connected to power supply II. When the moving contact switches between power supply I, power supply II, and dual-state states, the corresponding indicator area of ​​the indicator structure 2 is exposed from the display window 101 to indicate the state of the moving contact, thereby determining whether power supply II or power supply I is being used. For power supply I and power supply II, one is the primary power supply and the other is the backup power supply. In this embodiment, power supply I is the primary power supply, and power supply II is the backup power supply.

[0048] Optionally, the housing 10 is provided with a handle groove 104 and an indicator mark 105. The indicator mark 105 is located on one side of the handle groove 104 and corresponds to the indicator area. The indicator marks 105 are spaced apart along the length of the handle groove 104. The operating mechanism 8 is provided with an operating wrench 81. The operating wrench 81 is inserted into the handle groove 104 and placed outside the housing 10. The rotation of the operating mechanism 8 drives the rotating shaft 3 to rotate and rotates the operating wrench 81 to the position of the corresponding indicator mark 105.

[0049] By providing a handle groove 104 on the outer casing 10, and inserting the operating wrench 81 into the handle groove 104 and placing it outside the outer casing 10, when the operating mechanism 8 rotates, the operating wrench 81 rotates and moves within the handle groove 104. By observing the indicator mark 105 corresponding to the position of the operating wrench 81, the state of the operating mechanism 8 at this time can be determined.

[0050] In this embodiment, the operating mechanism 8 includes a manual drive component and an automatic drive component. The manual drive component is operated by a worker who operates the wrench 81 to rotate the rotating shaft 3. The automatic drive component is controlled by a circuit board to drive the rotating shaft 3. The specific structure of the operating mechanism 8 can be set with reference to the prior art.

[0051] Furthermore, the indicator structure 2 includes a first gear 21 and a second gear 22. The second gear 22 is rotatably disposed inside the housing 10. The first gear 21 is fixed on the rotating shaft 3 and meshes with the second gear 22. The indicator area is disposed on the second gear 22. The rotation of the rotating shaft 3 drives the first gear 21 to rotate to trigger the corresponding position of the electronic status indicator device 4, and drives the second gear 22 to rotate through the first gear 21 to align the corresponding indicator area with the display window 101.

[0052] By setting the first gear 21 and the second gear 22, the structure is compact, the motion transmission is reliable and the transmission ratio is constant, and it has high precision and transmission efficiency.

[0053] In this embodiment, the second gear 22 has a half tooth shape on one side and an indicator area on the other side, the first gear 21 is fan-shaped, and the outer arc surface of the first gear 21 has a tooth shape that cooperates with the second gear 22.

[0054] See Figure 3 , Figure 4 and Figure 6 Two positioning protrusions 214 are arranged opposite each other on the inner side of the first gear 21. The rotating shaft 3 has positioning grooves 31 along its axial direction that correspond one-to-one with the positioning protrusions 214. The positioning protrusions 214 are embedded in the positioning grooves 31 to fix the first gear 21 onto the rotating shaft 3. By machining the positioning protrusions 214 on the inner side of the first gear 21 and the positioning grooves 31 on the rotating shaft 3, axial fixation is achieved through the interlocking of the positioning protrusions 214 and the positioning grooves 31. The arrangement of two opposing positioning protrusions 214 helps improve positioning accuracy and ensures the stability and reliability of the gear transmission. In this embodiment, the cross-section of the positioning protrusion 214 is rectangular, and the shape of the positioning groove 31 matches that of the positioning protrusion 214.

[0055] Specifically, the automatic transfer switch also includes an electronic circuit board, and the electronic status indicator 4 includes three microswitches, all of which are electrically connected to the electronic circuit board. The three microswitches are a first switch 41, a second switch 42, and a third switch 43, with the second switch 42 located between the first switch 41 and the third switch 43. The first gear 21 has teeth on its first side that mesh with the second gear 22, and a receiving groove 211 on its second side. When the moving contact is in power supply state II, the first gear 21 triggers the first switch 41 and the second switch 42. When the moving contact is in power supply state I, the first gear 21 triggers the second switch 42 and the third switch 43. When the moving contact is in the double-open state, the trigger button or spring of the second switch 42 is placed in the receiving groove 211 on the first gear 21, so that the second switch 42 is in the released state.

[0056] By setting up an electronic circuit board and three microswitches, the electronic circuit board can correctly receive and process signals when the microswitches are triggered, thereby realizing status indication. By setting a receiving groove 211 on the first gear 21, when the moving contact switches from power supply II state or power supply I state to the dual-open state, the triggering of the second switch 42 can be used to determine whether the first gear 21 has rotated to the correct position. When the moving contact switches from the dual-open state to power supply II state, the triggering of the first switch 41 can be used to determine whether the first gear 21 has rotated to the correct position. When the moving contact switches from the dual-open state to power supply I state, the triggering of the third switch 43 can be used to determine whether the first gear 21 has rotated to the correct position, thereby reflecting whether the operating mechanism 8 is in position, which is accurate and reliable.

[0057] In this embodiment, the first switch 41, the second switch 42, and the third switch 43 are spaced apart around the first gear 21. The first switch 41 and the third switch 43 are each equipped with a trigger button and a reed, while the second switch 42 is only equipped with a trigger button. For the first switch 41 and the third switch 43, the first gear 21 presses against the reed to trigger the corresponding microswitch's trigger button, thus putting the microswitch in the triggered state. For the second switch 42, the first gear 21 directly presses against the trigger button to put the second switch 42 in the triggered state. When the moving contact is in the double-open state, the trigger button of the second switch 42 is placed in the receiving groove 211 on the first gear 21, putting the second switch 42 in the released state. By using the first gear 21 to directly trigger the trigger button of the second switch 42, the space occupied by the reed can be saved, making the structure more compact.

[0058] In other embodiments, a reed can also be provided on the second switch 42. The first gear 21 presses against the reed of the second switch 42, thereby triggering the trigger button of the second switch 42, so that the second switch 42 is in the triggered state. Then, when the moving contact is in the double-open state, the reed of the second switch 42 is placed in the receiving groove 211 on the first gear 21, so that the second switch 42 is in the released state.

[0059] See Figure 5 In this embodiment, the three indicator areas are a first indicator area 221, a second indicator area 222, and a third indicator area 223, with the first indicator area 221 located between the second indicator area 222 and the third indicator area 223. The first indicator area 221 is engraved with "O", the second indicator area 222 is engraved with "I", and the third indicator area 223 is engraved with "II". Correspondingly, see [link to relevant documentation]. Figure 1The indicator mark 105 also includes three marks: "I", "II", and "O". Understandably, when the second indicator area 222 is directly opposite the display window 101, the display window 101 will show the "I" mark. At this time, the operating wrench 81 should also be in the corresponding position marked with the "I" mark on the indicator mark 105. If the mark shown on the display window 101 does not match the corresponding mark on the operating wrench 81, it can be determined that the automatic transfer switch has malfunctioned.

[0060] See Figure 7 and Figure 8 Optionally, the first gear 21 is provided with two anti-mistake protrusions 212, which are located on two adjacent teeth of the first gear 21 respectively; the second gear 22 has a positioning tooth 224 on its first side, and three indicator areas are arranged sequentially along the circumferential surface of the second side of the second gear 22. The positioning tooth 224 is arranged corresponding to the indicator area located in the middle position, and the positioning tooth 224 is arranged between two adjacent teeth with anti-mistake protrusions 212.

[0061] In this embodiment, a tooth in the middle of one side of the second gear 22 serves as a positioning tooth 224. The positioning tooth 224 is correspondingly arranged with the first indicator area 221. The two anti-fooling protrusions 212 are also located in the middle of the first gear 21.

[0062] By providing a foolproof protrusion 212 on the first gear 21, the second gear 22 and the first gear 21 can be installed with reference to the position of the foolproof protrusion 212 during installation. This ensures that the rotation of the first gear 21 drives the rotation of the second gear 22, aligning the corresponding indicator area with the display window 101. This avoids multiple adjustments to the installation position, saving installation time and improving installation efficiency. In other embodiments, a tooth profile at another position of the second gear 22 can be selected as the positioning tooth 224, and the foolproof protrusion 212 can be provided at the corresponding position of the first gear 21.

[0063] Optionally, the second gear 22 has an auxiliary plate 225 and a tooth profile for engaging with the first gear 21 on its first side. The auxiliary plate 225 has two notches 2251. The tooth profile of the second gear 22 protrudes and connects to the auxiliary plate 225. The tooth profile of the second gear 22 includes a positioning tooth 224 located between the two notches 2251. Each anti-fooling protrusion 212 is movably inserted into one notch 2251. By providing an auxiliary plate 225 on the second gear 22 with two notches 2251 and the positioning tooth 224 located between the two notches 2251, the positioning tooth 224 can be quickly identified during installation through the notches 2251. The first gear 21 and the second gear 22 can then be installed by referring to the positions of the positioning tooth 224 and the two anti-fooling protrusions 212, avoiding multiple adjustments that waste installation time. In other embodiments, a specific mark can also be provided on a tooth profile in the middle of one side of the second gear 22 as the positioning tooth 224 to quickly determine its position.

[0064] Optionally, the first gear 21 is provided with a baffle 213 and teeth that mate with the second gear 22. The teeth of the first gear 21 are protruding and connected to the baffle 213, and the baffle 213 closes one end of all the tooth slots of the first gear 21. By providing the baffle 213 on the first gear 21 and closing one end of all the tooth slots of the first gear 21, when the first gear 21 and the second gear 22 mesh, the teeth of the second gear 22 insert into the tooth slots of the first gear 21. At this time, the baffle 213 can block the teeth of the second gear 22 from one end of the tooth slots, preventing the first gear 21 and the second gear 22 from misaligning or even disengaging from each other.

[0065] See Figure 7 The auxiliary plate 225 closes one end of the tooth groove of the second gear 22; the teeth of the first gear 21 and the teeth of the second gear 22 are both located between the auxiliary plate 225 and the baffle 213; the auxiliary plate 225 and the baffle 213 work together to limit the rotation of the first gear 21 and the second gear 22, effectively preventing the first gear 21 and the second gear 22 from misaligning or even separating from each other.

[0066] See Figure 9 Optionally, the bottom of the housing 10 is provided with a groove 102, and the groove wall of the groove 102 is provided with an elastic element 7. The groove 102 is used to engage with the guide rail, and the elastic element 7 is used to press against the side wall of the guide rail. By providing a groove 102 on the housing 10 to fit on the guide rail, and providing an elastic element 7 between the groove wall of the groove 102 and the guide rail, the elastic element 7 can enhance the installation stability of the automatic transfer switch.

[0067] In this embodiment, the elastic element 7 is generally shaped like a "Z" and the outer shell 10 is also provided with a U-shaped groove 103. The U-shaped groove 103 is connected to the groove 102. The elastic element 7 is disposed in the middle of the U-shaped groove 103 and its two ends are inserted into the groove 102. Multiple U-shaped grooves 103 are provided at intervals along the length direction of the outer shell 10, and each U-shaped groove 103 is provided with an elastic element 7. The elastic element 7 can be a spring.

[0068] Another aspect of this embodiment provides a dual-power supply device, which includes a guide rail and the aforementioned automatic transfer switch, the automatic transfer switch being detachably mounted on the guide rail. When power supply I of the dual-power supply device fails, the moving contact of the automatic transfer switch will switch to connect with the second stationary contact to connect power supply II, ensuring that the dual-power supply device continues to operate.

[0069] See Figure 2 and Figure 5 The following is the specific usage process of automatic transfer switch electrical appliances:

[0070] When the automatic transfer switch is in standby closing position, the top of the moving contact of the contact system contacts the second stationary contact; the first gear 21 presses down the standby first switch 41, and the "II" on the second gear 22 is exposed from the display window 101.

[0071] When the automatic transfer switch is in the normal closing position, the bottom end of the moving contact of the contact system contacts the first stationary contact; the first gear 21 presses down the standby third switch 43, and the "I" on the second gear 22 is exposed from the display window 101.

[0072] When the automatic transfer switch is in the double open position, the moving contact of the contact system is separated from both the first stationary contact and the second stationary contact. At this time, the reed of the second switch 42 extends into the receiving groove 211 of the first gear 21, the second switch 42 is released, and the "O" on the second gear 22 is exposed from the display window 101. The moving contact is in a balanced state.

[0073] When the automatic transfer switch is switched from the standby closed position to the double open position, the second gear 22 rotates from the II position to the O position, and the first gear 21 rotates clockwise with the rotating shaft 3, driving the second gear 22 to rotate counterclockwise.

[0074] When the automatic transfer switch moves from the open position to the normally closed position, the second gear 22 moves from the O position to the I position, and the first gear 21 rotates clockwise with the rotating shaft 3, driving the second gear 22 to rotate counterclockwise.

[0075] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An automatic transfer switch, characterized in that, Includes a housing (10), on which a display window (101) is provided, and inside the housing (10) are a contact system, an indicator structure (2), a rotating shaft (3), an operating mechanism (8) and an electronic status indicator device (4); The contact system includes a first stationary contact, a second stationary contact, and a moving contact. The moving contact has a power supply I state connected to the first stationary contact, a power supply II state connected to the second stationary contact, and a dual-state disconnected from both the first and second stationary contacts. The rotating shaft (3) is rotatably connected to the housing (10). One end of the rotating shaft (3) is connected to the moving contact, and the other end of the rotating shaft (3) is connected to the operating mechanism (8). The indicating structure (2) is connected to the rotating shaft (3) and has three indicating areas. The operating mechanism (8) is used to drive the rotating shaft (3) to rotate, so that the moving contact rotates to switch between the power supply I state, the power supply II state and the dual state, and drive the indicator structure (2) to rotate to trigger the corresponding position of the electronic status indicator device (4), and make the corresponding indicator area face the display window (101).

2. The automatic transfer switch according to claim 1, characterized in that, The indicator structure (2) includes a first gear (21) and a second gear (22). The second gear (22) is rotatably disposed inside the housing (10). The first gear (21) is fixed on the rotating shaft (3) and meshes with the second gear (22). The indicator area is disposed on the second gear (22). The rotating shaft (3) rotates to drive the first gear (21) to rotate to trigger the corresponding position of the electronic status indicator device (4), and the first gear (21) drives the second gear (22) to rotate so that the corresponding indicator area faces the display window (101).

3. The automatic transfer switch according to claim 2, characterized in that, It also includes an electronic circuit board. The electronic status indicator (4) includes three micro switches. All three micro switches are electrically connected to the electronic circuit board. The three micro switches are a first switch (41), a second switch (42), and a third switch (43). The second switch (42) is located between the first switch (41) and the third switch (43). The first gear (21) has a tooth profile on its first side that meshes with the second gear (22), and the first gear (21) has a receiving groove (211) on its second side; When the moving contact is in the power supply II state, the first gear (21) triggers the first switch (41) and the second switch (42); when the moving contact is in the power supply I state, the first gear (21) triggers the second switch (42) and the third switch (43); when the moving contact is in the double-open state, the trigger button or spring of the second switch (42) is placed in the receiving groove (211) on the first gear (21) to make the second switch (42) in the released state.

4. The automatic transfer switch according to claim 2, characterized in that, The first gear (21) is provided with two anti-fooling protrusions (212), and the two anti-fooling protrusions (212) are respectively located on two adjacent teeth of the first gear (21); The second gear (22) has a positioning tooth (224) on its first side. The three indicator areas are arranged sequentially along the circumferential surface of the second side of the second gear (22). The positioning tooth (224) is arranged corresponding to the indicator area located in the middle position. The positioning tooth (224) is arranged between two adjacent teeth with the anti-fooling protrusion (212).

5. The automatic transfer switch according to claim 4, characterized in that, The second gear (22) has an auxiliary plate (225) and a tooth profile for cooperating with the first gear (21) on its first side. The auxiliary plate (225) has two notches (2251). The tooth profile of the second gear (22) is protruding and connected to the auxiliary plate (225). The tooth profile of the second gear (22) includes the positioning tooth (224) and the positioning tooth (224) is located between the two notches (2251). Each anti-fooling protrusion (212) is movably inserted into one of the notches (2251).

6. The automatic transfer switch according to claim 2, characterized in that, The first gear (21) is provided with a baffle (213) and a tooth profile that cooperates with the second gear (22). The tooth profile of the first gear (21) is protruding and connected to the baffle (213). The baffle (213) closes one end of all the tooth grooves of the first gear (21).

7. The automatic transfer switch according to claim 2, characterized in that, The first gear (21) has two positioning protrusions (214) arranged opposite to each other on its inner side. The rotating shaft (3) has positioning grooves (31) that correspond one-to-one with the positioning protrusions (214) along its axial direction. The positioning protrusions (214) are embedded in the positioning grooves (31) so that the first gear (21) is fixed on the rotating shaft (3).

8. The automatic transfer switch according to claim 1, characterized in that, The outer casing (10) is provided with a handle groove (104) and an indicator mark (105). The indicator mark (105) is located on one side of the handle groove (104) and corresponds one-to-one with the indicator area. The indicator marks (105) are spaced apart along the length of the handle groove (104). The operating mechanism (8) is provided with an operating wrench (81). The operating wrench (81) is inserted into the handle groove (104) and placed outside the outer casing (10). The operating mechanism (8) rotates to drive the rotating shaft (3) to rotate and causes the operating wrench (81) to rotate to the corresponding position of the indicator mark (105).

9. The automatic transfer switch according to claim 1, characterized in that, The bottom of the outer shell (10) is provided with a groove (102), and the groove (102) is provided with an elastic element (7). The groove (102) is used to be engaged on the guide rail, and the elastic element (7) is used to press against the side wall of the guide rail.

10. A dual-power supply device, characterized in that, It includes a guide rail and an automatic transfer switch as described in any one of claims 1-9, wherein the automatic transfer switch is detachably mounted on the guide rail.

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