Switching mechanism of automatic change-over switch

Abstract

A switching mechanism of an automatic change-over switch comprises an energy storage device and a motor, the energy storage device is used for controlling a contact system to act, the energy storage device comprises a driving part, a driven part, an elastic part and two limiting parts, the driving part is connected with the motor, the elastic part is connected between the driving part and the driven part, and the two limiting parts are arranged on the driving part. When rotating from the driving double-separation position to the driving common position and the driving standby position, the driving part can rotate relative to the driven part and enable the elastic part to store energy, and after rotating to the driving common position or the driving standby position, the driving part drives one of the limiting parts to unlock the driven part. The driven part is driven by the elastic part to rotate to the corresponding common position or standby position, meanwhile, the other limiting part locks the driven part so that the driven part can not rotate towards the double-separation position, the driven part is locked through the two limiting parts respectively so that the driven part can not rotate in the clockwise direction and the anticlockwise direction, and therefore the driven part can not rotate in the clockwise direction or the anticlockwise direction. And a driven part can be reliably limited in a double-split position, a common power supply position and a standby power supply position.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliances, and more specifically to a switching mechanism for an automatic transfer switch. Background Technology

[0002] Automatic transfer switches use a switching mechanism to connect and disconnect the primary and backup power supplies. For automatic transfer switches with short switching times, not only is sufficient contact pressure achieved through overtravel required, but also a sufficient contact gap is needed to ensure stable connection and disconnection between the primary and backup contacts. However, the contact system structure of existing automatic transfer switches is relatively complex, resulting in poor stability and susceptibility to malfunctions that can lead to product failure. Summary of the Invention

[0003] The purpose of this invention is to overcome at least one defect of the prior art and provide a switching mechanism for an automatic transfer switch.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An automatic transfer switch switching mechanism includes an energy storage device and a motor. The energy storage device is used to control the operation of a contact system. The energy storage device includes an active component, a passive component, an elastic component, and two limiting components. The active component is connected to the motor, and the elastic component is connected between the active component and the passive component. The active component can rotate between an active double-opening position, an active normal position, and an active standby position under the drive of the motor, driving the passive component to rotate between the double-opening position, the normal position, and the standby position accordingly. When the active component is in the active double-opening position, the passive component is in the double-opening position, and the two limiting components lock the passive component, preventing the passive component from rotating to the normal position or the standby position.

[0006] When the active component rotates from the active dual-position to the active normal position and the active standby position, it can rotate relative to the driven component and store energy in the elastic component. After the active component rotates to the active normal position or the active standby position, it drives one of the limiting components to unlock the driven component, so that the driven component rotates to the corresponding normal position or standby position under the action of the elastic component. At the same time, the other limiting component locks the driven component so that it cannot rotate to the dual-position.

[0007] Preferably, the driven member is provided with two limiting structures for each limiting member. The two limiting structures are a first limiting tooth and a second limiting tooth. When the two limiting members are in contact with the corresponding first limiting tooth, the driven member is locked in the double-position. When one limiting member is in contact with the corresponding second limiting tooth, the driven member is locked in one of the normal position and the spare position. When the other limiting member is in contact with the corresponding second limiting tooth, the driven member is locked in the other of the normal position and the spare position.

[0008] Preferably, the driven member has a central hole in its middle, the two limiting members are disposed in the middle of the central hole, the driving member is disposed between the two limiting members, the side wall of the central hole has a second protrusion protruding towards the rotation center, the two opposite ends of the second protrusion along the rotation direction of the driven member respectively form a second limiting tooth, the middle of the second protrusion has a first protrusion protruding towards the rotation center, the two opposite ends of the first protrusion along the rotation direction of the driven member respectively form a first limiting tooth, when the driven member is in the double-split position, the two limiting members clamp the first protrusion from both sides respectively, and respectively engage with the corresponding first limiting tooth for limiting.

[0009] Preferably, when the active member rotates from the active normal position or the active standby position to the active double-splitting position, it can rotate relative to the driven member and store energy in the elastic member. After rotating to the active double-splitting position, the active member pushes one of the limiting members that locks the driven member to unlock the driven member. After unlocking, the driven member is driven by the elastic member to rotate to the corresponding double-splitting position and is limited by the two limiting members to prevent it from rotating to the normal position or the standby position.

[0010] Preferably, the driven member has a fixed frame on its side, and a limiting arm is provided on the fixed frame. When the driven member rotates to the normal position or the standby position, the limiting arm limits the driven member so that the driven member cannot continue to rotate beyond the normal position or the standby position.

[0011] Preferably, the energy storage device includes a cover plate disposed opposite to the fixed frame. The active component, the passive component, the elastic component, and two limiting components are all disposed between the cover plate and the fixed frame. The cover plate is fixedly connected to the passive component via a connecting column. The cover plate is provided with a limiting groove. The two groove walls opposite to each other along the rotation direction of the passive component are respectively provided with limiting surfaces. The fixed frame is provided with a limiting arm inserted into the limiting groove. When the passive component is in the normal position or the standby position, the limiting arm contacts one of the limiting surfaces to prevent the passive component from continuing to rotate in the direction of the normal position or the standby position, thereby locking the passive component in the normal position or the standby position.

[0012] Preferably, the energy storage device includes two elastic elements, which are symmetrically arranged on both sides of the active element, and the two elastic elements are connected between the driven element and the active element.

[0013] Preferably, the driven member has two spring posts protruding to the side, the two spring posts are arranged opposite each other on both sides of the driving member, the two elastic members are respectively connected between the two spring posts and the driving member, and the spring posts are connected between the cover plate and the fixing frame.

[0014] Preferably, the two limiting members are rotatably configured. Each limiting member includes a limiting claw and a first connecting part that are disposed opposite to each other on both sides of the rotation center. The first connecting parts of the two limiting members are connected by a limiting spring. The limiting spring is used to drive the two limiting members to rotate, so that the first connecting parts of the two limiting members move closer to each other, while the limiting claws of the two limiting members rotate away from each other, thereby locking the driven member.

[0015] Preferably, the limiting member is curved, and the limiting claws at both ends of the limiting member and the first connecting portion are bent toward the other limiting member.

[0016] Preferably, the fixing frame is provided with a second limiting arm, which slides in cooperation with the side wall of the middle hole of the driven member.

[0017] Preferably, the actuator is provided with a plurality of micro switches around its perimeter, and the actuator is provided with a plurality of trigger parts that protrude radially. The plurality of trigger parts correspond to the plurality of micro switches respectively. When the actuator rotates, it drives the trigger parts to trigger the corresponding micro switches to switch the output state.

[0018] Preferably, the active component includes a rotating part connected to the motor shaft, and the rotating part has two radially protruding sides provided with unlocking parts for pushing the limiting component to rotate to unlock the driven component.

[0019] Preferably, the rotating part includes two planar first side surfaces disposed opposite each other on both sides, and two curved second side surfaces disposed opposite each other on the other two sides. The two second side surfaces are respectively connected between the two ends of the two first side surfaces. Each of the two second side surfaces is provided with an unlocking part. The unlocking part protrudes from one end of the second side surface and is connected to one of the first side surfaces. The side surface of the unlocking part is flush with the first side surface. Each of the two first side surfaces is provided with a second connecting part. The second connecting part is provided with a spring hole for connecting an elastic element.

[0020] Preferably, the active component includes a rotating part and a bracket. The rotating part and the bracket are respectively provided with a first drive hole and a second drive hole for connecting the motor shaft. The rotating part and the bracket are respectively connected to the motor shaft, and the motor shaft is connected to the motor. The bracket is provided with a spring hole for connecting an elastic element.

[0021] Preferably, the active component has an integrally formed indicator part on one radial side, the indicator part has an indicator mark, the energy storage device has an indicator window, and when the active component rotates, it drives the indicator part to swing, so that the indicator mark moves to the indicator window.

[0022] Preferably, the indicator part is provided with a handle hole for inserting the operating handle, and the driving member is used to drive the active member to rotate under the drive of the operating handle.

[0023] Preferably, the bracket and the rotating part are made of different materials, and the bracket is integrally formed with the rotating part as an insert.

[0024] The automatic transfer switch mechanism invented in this invention uses two limiting members to lock the driven member. When the driven member is in the dual-position, it can be locked by the two limiting members respectively, and the driven member cannot rotate in either clockwise or counterclockwise direction. When the driven member is unlocked by one of the limiting members and rotates to the corresponding normal power position or standby power position, the other limiting member can still remain locked and prevent the driven member from springing back. The driven member can not only quickly switch between the dual-position, normal power position and standby power position under the drive of the elastic member, but each position can also be reliably limited by at least one limiting member, which can effectively ensure the stability of the entire system.

[0025] Furthermore, by setting an annular driven member and placing the limiting member and the driving member in the middle of the driven member, the structure is compact and the volume can be reduced.

[0026] In addition, the driving member is pulled to rotate by two elastic members, which can balance the forces on both sides of the rotation center of the driving member and the driven member. Attached Figure Description

[0027] Figure 1 This is an exploded view of the switching mechanism of the automatic transfer switch created in this invention;

[0028] Figure 2 This is a schematic diagram of the switching mechanism of the automatic transfer switch created by the present invention;

[0029] Figure 3 This is a schematic diagram of the energy storage mechanism created by the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the fixing frame created in this invention;

[0031] Figure 5 This is a schematic diagram illustrating the interaction of the active component, the passive component, the limiting component, and the elastic component in this invention;

[0032] Figure 6 This is a schematic diagram of the structure of the active component of the present invention;

[0033] Figure 7-9 This is a structural diagram when both the driving and driven components are in the split position;

[0034] Figure 10-11 This is a schematic diagram of the structure when the driving member rotates from the split position to the normal position, but the driven member is locked in the split position;

[0035] Figure 12-14 This is a schematic diagram of the structure when the driven component rotates to its usual position under the drive of the elastic component after being unlocked;

[0036] Figure 15-17 This is a schematic diagram of the structure when the driving member rotates from the normal position to the split position, but the driven member is locked in the normal position;

[0037] Figure 18 This is a schematic diagram of the structure in the second embodiment of the drive mechanism;

[0038] Figure 19 This is a schematic diagram of the cooperation between the driving component and the active component in the second embodiment of the drive mechanism;

[0039] Figure 20 This is a schematic diagram of the active component in the second embodiment of the drive mechanism;

[0040] Figure 21 This is a structural schematic diagram of the third embodiment of the drive mechanism;

[0041] Figure 22 This is a schematic diagram of the cooperation between the driving component and the active component in the third embodiment of the drive mechanism;

[0042] Figure 23 This is a structural schematic diagram of the fourth embodiment of the drive mechanism;

[0043] Figure 24 This is a schematic diagram of the cooperation between the connecting rod, the driving member, and the driving member in the fourth embodiment of the drive mechanism;

[0044] Figure 25 This is a schematic diagram of the cooperation between the driving member and the driven member in the fourth embodiment of the drive mechanism;

[0045] Figure 26 This is a schematic diagram of the connecting rod and driving component in the fourth embodiment of the drive mechanism;

[0046] In the picture:

[0047] 1. Electric motor

[0048] 3 Active components

[0049] 4. Passive component

[0050] 5. Elastic components

[0051] 6 Limiting components

[0052] 7. Micro switch

[0053] 11 Motor Shaft

[0054] 20 fixed pins

[0055] 21 Fixture

[0056] 22 Cover plate

[0057] 23 Limiting groove

[0058] 24 limiting surfaces

[0059] 25 Limiting Arm

[0060] 26 Second Limiting Arm

[0061] 31 Rotating part

[0062] 32 stents

[0063] 33. Instruction Department

[0064] 34 Connecting pins

[0065] 41 First limiting tooth

[0066] 42 Second limiting tooth

[0067] 43 Second Protrusion

[0068] 44 First protrusion

[0069] 45 Spring Column

[0070] 46 Guide groove

[0071] 61 Limiting claw

[0072] 62 First connecting part

[0073] 63 Limit Spring

[0074] 81 Driver

[0075] 82 Handle Hole

[0076] 83 First Gear

[0077] 84 Second Gear

[0078] 85 Linkage

[0079] 86 guide shaft

[0080] 87 Guide Hole

[0081] 88 guide head

[0082] 310 First driving hole

[0083] 311 First side view

[0084] 312 Second side view

[0085] 313 Unlocking Department

[0086] 314 Second connecting part

[0087] 315 Spring Hole

[0088] 320 Second Drive Hole

[0089] 341 Middle section

[0090] 342 Insertion section Detailed Implementation

[0091] The following embodiments, in conjunction with the accompanying drawings, further illustrate specific implementations of the automatic transfer switch mechanism of the present invention. The automatic transfer switch mechanism of the present invention is not limited to the descriptions in the following embodiments.

[0092] like Figure 1 As shown, the switching mechanism of the automatic transfer switch in this embodiment includes a contact system (not shown in the diagram), an energy storage device, and a motor 1. The contact system has at least two pairs of stationary contacts and a moving contact disposed between the at least two pairs of stationary contacts. The two pairs of stationary contacts are respectively connected to the main power supply and the backup power supply. The motor 1 is used to store energy for the energy storage device. When the energy storage device releases energy, it drives the contact system to operate, thereby switching between the main power supply and the backup power supply, or simultaneously disconnecting the main power supply and the backup power supply.

[0093] like Figure 2-8 As shown, an improvement in this embodiment is that the energy storage device includes a fixed frame 21 and a cover plate 22 opposite to the fixed frame 21, and a fixing pin 20 connecting the fixed frame 21 and the cover plate 22. The fixed frame 21 and the cover plate 22 are provided with an active member 3, a passive member 4, an elastic member 5 and two limiting members 6. The active member 3 is connected to the motor 1. The elastic member 5 is connected between the active member 3 and the passive member 4. The passive member 4 is directly or indirectly connected to the moving contact of the contact system. The active member 3 can rotate between the active dual-position, the active normal position and the active standby position under the drive of the motor 1, and drives the passive member 4 to rotate between the dual-position, the normal position and the standby position accordingly. The passive member 4 is provided with a limiting structure for each limiting member 6. When the active member 3 is in the active dual-position, the passive member 4 is in the dual-position and the two limiting members 6 lock the passive member 4 through the limiting structure, so that the passive member 4 cannot rotate to the normal position and the standby position.

[0094] When the active member 3 rotates from the active dual-position to the active normal position and the active standby position, it can rotate relative to the driven member 4 and store energy in the elastic member 5. After the active member 3 rotates to the active normal position or the active standby position, it drives one of the limiting members 6 to unlock the driven member 4, so that the driven member 4 rotates to the corresponding normal position or standby position under the action of the elastic member 5. At the same time, the other limiting member 6 locks the driven member 4 so that it cannot rotate to the dual-position.

[0095] When the driven member 4 rotates to the double-separated position, it causes the two ends of the moving contact to separate from both pairs of stationary contacts and disconnect the normal power supply and the backup power supply. When the driven member 4 rotates to the normal position, the two ends of the moving contact contact one of the pairs of stationary contacts and conduct the normal power supply. When the driven member 4 rotates to the backup position, the two ends of the moving contact contact the other pair of stationary contacts and conduct the backup power supply.

[0096] In this embodiment, the switching mechanism of the automatic transfer switch locks the actuator 4 with two limiting members 6. When the actuator 4 is in the dual-position, it can be locked by the two limiting members 6 respectively, and the actuator 4 cannot rotate in both clockwise and counterclockwise directions. When the actuator 4 is unlocked by one of the limiting members 6 and rotates to the corresponding normal power position or backup power position, the other limiting member 6 can still keep it locked and prevent the actuator 4 from rebounding. The actuator 4 can not only quickly switch between the dual-position, normal power position and backup power position under the drive of the elastic member 5, but each position can also be reliably limited by at least one limiting member 6, which can effectively ensure the stability of the entire system.

[0097] like Figure 2 As shown, the driven member 4 in this embodiment is annular, with a central hole in the middle. The two limiting members 6 are located in the middle of the central hole, and the driving member 3 is located between the two limiting members 6. The sidewall of the central hole is provided with two limiting structures corresponding to each limiting member 6. The two limiting structures are a first limiting tooth 41 and a second limiting tooth 42, that is, the sidewall of the central hole is provided with two first limiting teeth 41 and two second limiting teeth 42. The two first limiting teeth 41 are located between the two second limiting teeth 42. When the two limiting members 6 contact the corresponding first limiting teeth 41, they lock the driven member 4 in a double-position. When one limiting member 6 contacts the corresponding second limiting tooth 42, it locks the driven member 4 in one of the normal position and the spare position. When the other limiting member 6 contacts the corresponding second limiting tooth 42, it locks the driven member 4 in the other of the normal position and the spare position. That is, the two limiting members 6 are used not only to lock the driven member 4 in the split position, but also to lock the driven member 4 in the normal position and the spare position. As another inferior embodiment, the driven member 4 may also be provided with only one limiting structure for each limiting member 6, which is only used to lock the driven member 4 in the split position.

[0098] In this embodiment, a second protrusion 43 protruding towards the rotation center is provided on the side wall of the intermediate hole. The two opposite ends of the second protrusion 43 along the rotation direction of the driven member 4 respectively form second limiting teeth 42. A first protrusion 44 protruding towards the rotation center is provided in the middle of the second protrusion 43. The two opposite ends of the first protrusion 44 along the rotation direction of the driven member 4 respectively form first limiting teeth 41. When the driven member 4 is in the split position, the two limiting members 6 respectively engage with the corresponding first limiting teeth 41, clamping the first protrusion 44 from both sides. When the driven member 4 is in the normal or standby position, one limiting member 6, driven by the driving member 3, avoids the corresponding first limiting teeth 41 and second limiting teeth 42 to unlock the driven member 4, while the other limiting member 6 separates from the corresponding first limiting tooth 41 and engages with the corresponding second limiting tooth 42. This embodiment features a ring-shaped driven member 4, with the limiting members 6 and the driving member 3 located in the middle of the driven member 4, resulting in a compact structure and reduced volume.

[0099] Furthermore, the two limiting members 6 are rotatably configured. Each limiting member 6 includes limiting claws 61 and first connecting portions 62 positioned opposite each other on either side of the rotation center. The limiting member 6 is curved, with the limiting claws 61 and first connecting portions 62 at both ends bending towards the other limiting member 6. The first connecting portions 62 of the two limiting members 6 are connected by a limiting spring 63. The limiting spring 63 drives the two limiting members 6 to rotate, bringing the first connecting portions 62 of the two limiting members 6 closer together while simultaneously causing the limiting claws 61 of the two limiting members 6 to rotate away from each other, thereby locking the driven member 4, i.e., contacting the corresponding limiting structures on the sidewall of the middle hole of the driven member 4. Of course, two limiting springs 63 can also be provided, with the two limiting springs 63 driving the two limiting members 6 to lock the driven member 4 respectively, or the limiting springs 63 can be torsion springs or springs of other shapes, all of which fall within the protection scope of this invention.

[0100] Furthermore, the driven member 4 is fixedly connected to the cover plate 22 via a connecting post. In this embodiment, the driven member 4 is connected to the moving contact via the cover plate 22, and the cover plate 22 is provided with a hole or shaft for connecting to the moving contact.

[0101] Further, refer to Figure 9 , 14 17. A limiting arm 25 is provided on the side of the driven member 4. When the driven member 4 rotates to the normal position or the standby position, the limiting arm 25 limits the driven member 4 so that it cannot continue to rotate beyond the normal position or the standby position. The limiting arm 25 can be one or two. As another inferior embodiment, the limiting arm 25 can be omitted. After the elastic member 5 releases energy to drive the driven member 4 to rotate to the equilibrium position, it will stop rotating. However, this is prone to rebound and swaying, resulting in poor reliability.

[0102] In this embodiment, the edge of the cover plate 22 is provided with an inwardly recessed limiting groove 23. The two groove walls of the limiting groove 23, which are opposite to each other along the rotation direction of the driven member 4, are respectively provided with limiting surfaces 24. The fixing frame 21 is provided with a limiting arm 25 inserted into the limiting groove 23. The limiting arm 25 is used to block the two limiting surfaces 24 of the limiting groove 23. When the driven member 4 is in the normal position or the standby position, the limiting arm 25 contacts one of the limiting surfaces 24 to prevent the driven member 4 from continuing to rotate in the direction of the normal position or the standby position, thereby locking the driven member 4 in the normal position or the standby position. The maximum rotation angle of the driven member 4 is indirectly limited by limiting the maximum rotation angle of the cover plate 22.

[0103] When the driven member 4 rotates from the double split position to the normal position or the spare position, the limiting arm 25 contacts one of the limiting surfaces 24 when the driven member 4 rotates to the position, preventing the driven member 4 from continuing to rotate. At the same time, the unlocked limiting member 6 prevents the driven member 4 from rebounding.

[0104] When the driven member 4 rotates from the normal position or the spare position to the double split position, the limiting arm 25 moves between the two limiting surfaces 24 and does not contact the two limiting surfaces 24. The driven member 4 is limited in the double split position by the two limiting members 6.

[0105] It is understood that the limiting groove 23 can also be set on the driven member 4, and the driven member 4 can be directly limited by the limiting arm 25 on the fixing frame 21. Both of these fall within the protection scope of this invention.

[0106] Furthermore, the fixing frame 21 is provided with a second limiting arm 26, which is in a limiting engagement with the side wall of the middle hole of the driven member 4. The second limiting arm 26 is used to guide the movement of the driven member 4.

[0107] like Figure 5 As shown, the energy storage device includes two elastic elements 5, which are symmetrically arranged on both sides of the active element 3. Both elastic elements 5 are tension springs. The driven element 4 is provided with two spring posts 45 protruding to the side. The two spring posts 45 are arranged opposite to each other on both sides of the active element 3. The two elastic elements 5 are respectively connected between the two spring posts 45 and the active element 3.

[0108] In this embodiment, the driving member 3 pulls the driven member 4 to rotate through two elastic members 5, which can balance the forces on both sides of the rotation center of the driving member 3 and the driven member 4. Preferably, the spring column 45 is connected between the cover plate 22 and the driven member 4, and acts as a connecting column while connecting the elastic members 5.

[0109] Of course, the active member 3 can also pull the passive member 4 to rotate through an elastic member 5. There can also be more than three elastic members 5. The three or more elastic members 5 are arranged symmetrically at the center, which can also improve the balance on both sides of the rotation center of the active member and the passive member 4.

[0110] like Figure 7-9 As shown, when the driven member 4 is in the double split position, the limiting claws 61 of the two limiting members 6 respectively contact the hole wall of the middle hole in the middle part of the driven member 4, and cooperate with the first limiting tooth 41 on the hole wall as a limiting structure to lock the driven member 4, so that the driven member 4 cannot rotate to the normal position and the spare position.

[0111] like Figure 10-11 As shown, when the active member 3 rotates from the active dual-position to the active common position or the active standby position, the active member 3 pushes one of the limiting members 6 to rotate while stretching the elastic member 5. This causes the limiting member 6 to drive the limiting claw 61 away from the first limiting tooth 41, which is a limiting structure, to unlock the driven member 4. The driven member 4 cannot rotate before unlocking. At this time, the rotation of the active member 3 causes the elastic member 5 to store energy.

[0112] like Figure 12-14 As shown, after unlocking, the driven member 4 is driven by the elastic member 5 to rotate from the dual-position to the commonly used or spare position, causing the other limiting member 6 to be limited by the second limiting tooth 42, which is another limiting structure. At the same time, the limiting arm 25 is limited by one of the limiting surfaces 24 in the limiting groove 23. The forward and reverse rotation of the driven member 4 is restricted by the limiting member 6 and the limiting arm 25 respectively, preventing it from rotating. Specifically, as shown... Figure 13 As shown, Figure 13 The upper limiting member 6 is driven by the active member 3 to release from the limiting of the driven member 4. The driven member 4 rotates counterclockwise under the drive of the elastic member 5. When the driven member 4 rotates to the normal position or the standby position, the limiting arm 25 restricts it from continuing to rotate counterclockwise. At the same time, the lower limiting member 6 cooperates with the second limiting tooth 42 of the driven member 4 to limit the driven member 4, so that the driven member 4 cannot rotate clockwise to the double split position.

[0113] like Figure 15-17 As shown, when the active member 3 rotates from the active normal position or the active standby position to the active double-split position, it can rotate relative to the driven member 4 and cause the elastic member 5 to store energy. After rotating to the active double-split position, the active member 3 pushes and locks one of the limiting members 6 of the driven member 4, that is, pushes the limiting member 6 that is limited by the second limiting tooth 42. Figure 16 The lower middle limiting member 6 separates the limiting member 6 from the second limiting tooth 42 and unlocks the driven member 4. The driven member 4 cannot rotate before unlocking. At this time, the rotation of the driving member 3 causes the elastic member 5 to store energy.

[0114] like Figure 7-9As shown, after unlocking, the driven member 4 is driven by the elastic member 5 to rotate back to the split position, where it is limited by the two limiting members 6, preventing the driven member 4 from rotating to the normal position or the spare position. When rotating from the split position to the other of the normal position and the spare position, it is in contact with... Figure 10-14 The actions are the same, only the rotation direction is opposite. When the driven member 4 rotates to the split position, the two limiting members 6 limit the driven member 4 from both sides.

[0115] Furthermore, the fixed frame 21 is provided with a plurality of micro switches 7, which surround the driven member 4. The driven member 4 is provided with a plurality of trigger parts that protrude radially, and the plurality of trigger parts correspond to the plurality of micro switches 7 respectively. When the driven member 4 rotates, it drives the trigger parts to trigger the corresponding micro switches 7 to switch the output state. The micro switches 7 can be used to output auxiliary contact signals when opening and closing the circuit breaker, and can also be used to output alarm signals when tripping the circuit breaker.

[0116] like Figure 6 As shown, the active member 3 includes a rotating part 31 with an oval cross section. The middle part of the rotating part 31 is provided with a first drive hole 310 for connecting the motor shaft 11. The two radial sides of the rotating part 31 are provided with unlocking parts 313 for pushing the limiting member 6 to rotate to unlock the driven member 4. In this embodiment, the rotating part 31 includes two planar first side surfaces 311 disposed opposite to each other on both sides, and two curved second side surfaces 312 disposed opposite to each other on the other two sides. The two second side surfaces 312 are respectively connected between the two ends of the two first side surfaces 311. The two second side surfaces 312 are respectively provided with unlocking parts 313 for pushing the limiting member 6 to rotate to unlock the driven member 4. The unlocking part 313 protrudes from one end of the second side surface 312 and is connected to one of the first side surfaces 311. The side surface of the unlocking part 313 is flush with the first side surface 311. The two first side surfaces 311 are respectively provided with second connecting parts 314. The second connecting parts 314 are provided with spring holes 315 for connecting the elastic member 5. When the unlocking part 313 on the second side surface 312 pushes one of the limiting members 6, the planar first side surface 311 can be used to avoid the other limiting member 6.

[0117] like Figure 1 In this configuration, the active component 3 includes a rotating part 31 and a bracket 32. The bracket 32 ​​has a second drive hole 320 for connecting the motor shaft 11 and a spring hole 315 for connecting the elastic element 5. The bracket 32 ​​is used to connect the elastic element 5 and is linked to the rotating part 31 via the motor shaft 11. The bracket 32 ​​is equivalent to a second connecting part 314 integrally formed with the connecting part. Of course, the bracket 32 ​​and the rotating part 31 can also be an integral structure, and the bracket 32 ​​and the rotating part 31 can also be made of two different materials, with the bracket 32 ​​serving as an insert integrally formed with the rotating part 31.

[0118] like Figure 5 As shown, the active component 3 has an integrally formed indicator part 33 on one radial side, and the indicator part 33 has an indicator mark. The energy storage device has an indicator window. When the active component 3 rotates, it drives the indicator part 33 to swing, causing the indicator mark to move to the indicator window, thereby indicating the opening and closing status of the moving contact. Of course, the indicator part 33 can also be separate from the active component 3 and installed on the active component 3.

[0119] An improvement in this embodiment is that the energy storage device is further provided with a manual operating mechanism, which includes a drive member 81. The drive member 81 is provided with a handle hole 82 (not shown in the figure) for inserting the operating handle. The drive member 81 is used to drive the active member 3 to rotate under the drive of the operating handle.

[0120] like Figure 5 The first embodiment of the manual operating mechanism is shown. In this embodiment, the manual operating mechanism includes the indicator part 33, which serves as the driving member 81 of the manual operating mechanism. The indicator part 33 is provided with the handle hole 82. The indicator part 33 has both indicating and operating functions, which is very convenient. Obviously, the manual operating mechanism may also not have an indicating function, that is, the driving member 81 is radially connected to the active member 3, and the driving member 81 is provided with the handle hole 82. Preferably, the driving member 81 and the active member 3 are integrally formed, the driving member 81 is located on one side of the active member 3 radially, and the end of the driving member 81 away from the active member 3 is provided with the handle hole 82. Preferably, the driving member 81 and the active member 3 are made of two different materials, and the driving member 81 is integrally formed with the active member 3 as an insert.

[0121] like Figure 18-20 A second embodiment of the manual operating mechanism is shown. The driving member 81 is rotatably mounted on the fixed frame 21. The driving member 81 is provided with a first gear 83, and the driving member 3 is provided with a second gear 84. The first gear 83 and the second gear 84 mesh. When the driving member 81 rotates, it drives the driving member 3 to rotate through the first gear 83 and the second gear 84. Preferably, the cover plate 22 is provided with an indicator part 33, and the energy storage device is provided with an indicator window. The cover plate 22 has multiple bending structures that bend towards the side closer to the driven member 4. The indicator part 33 is curved and is installed on the outside of the multiple bending structures. When the driven member 4 rotates, it drives the indicator part 33 to rotate through the cover plate 22. The working status can be directly observed through the indicator window. Of course, the indicator part 33 can also be integrally formed with the cover plate 22, both of which fall within the protection scope of this invention.

[0122] like Figure 21-22The third embodiment of the manual operating mechanism is shown. In this embodiment, the driving member 81 does not need to be rotatably mounted on the fixed frame 21, but is rotatably mounted on the driven member 4. The driving member 81 is provided with a first gear 83, and the driving member 3 is provided with a second gear 84. The first gear 83 and the second gear 84 mesh. Since the driven member 4 is locked by the limiting member 6, the operating handle can drive the driving member 81 to rotate. The first gear 83 on the driving member 81 drives the driving member 3 to rotate through the second gear 84.

[0123] like Figure 23-26 The fourth embodiment of the manual operating mechanism is shown. The driving member 81 is rotatably mounted on the driven member 4. The driven member 4 is provided with an arc-shaped guide groove 46. The center of the arc of the guide groove 46 coincides with the rotation center of the driving member 3. The manual operating mechanism also includes two connecting rods 85. The two connecting rods 85 are arranged opposite each other on both sides of the rotation center of the driving member 3. One end of the two connecting rods 85 is rotatably connected to the driving member 3, and the end of the two connecting rods 85 away from the driving member 3 is rotatably connected to the driving member 81. When the driving member 81 slides towards one end of the guide groove 46 under the drive of the operating handle, the driving member 81 can rotate around the rotation center of the driving member 3, and drive one of the connecting rods 85 to push the driving member 3, while driving the other connecting rod 85 to pull the driving member 3, so that the driving member 3 rotates.

[0124] It is understood that the driving component 81 can also be disposed between the driven component 4 and the fixed frame 21, and rotatably disposed on the fixed frame 21, all of which fall within the protection scope of this invention.

[0125] Furthermore, the active component 3 includes a rotating part 31 and a bracket 32. The bracket 32 ​​is provided with a second drive hole 320 for connecting the motor shaft 11. The second drive hole 320 is coaxially arranged with the first drive hole 310 of the rotating part 31 and has the same shape. The motor shaft 11 passes through the bracket 32 ​​and the rotating part 31 respectively, so that the active component 3 and the bracket 32 ​​are respectively connected to the motor shaft 11. The motor shaft 11 can drive the bracket 32 ​​and the active component 3 to rotate simultaneously. The ends of the two connecting rods 85 away from the driving component 81 are respectively rotatably connected to the two ends of the bracket 32. When the bracket 32 ​​rotates under the drive of the driving component 81, it drives the active component 3 to rotate through the motor shaft 11. When the bracket 32 ​​rotates under the drive of the motor 1, it drives one of the connecting rods 85 to push the driving component 81, and at the same time drives the other connecting rod 85 to pull the driving component 81, so that the driving component 81 slides along the guide groove 46. The manual mode is generally used only when the manual mode or the automatic mode fails, so it will not affect the operation of the motor 1.

[0126] Furthermore, the device includes two brackets 32, with a connecting pin 34 between them. A connecting rod 85 is hinged to the bracket 32 ​​via the connecting pin 34. The connecting pin 34 connects the two brackets 32, and the connecting rod 85 extends between the two brackets 32 and is rotatably connected to the connecting pin 34. The connecting pin 34 includes a central portion 341 and two insertion portions 342 oppositely disposed on both sides of the central portion 341. The diameter of the central portion 341 is larger than the diameter of the two insertion portions 342, and one of the insertion portions 342 is inserted into one of the brackets 32. In the middle, another insertion part 342 passes through the connecting rod 85 and is inserted into another bracket 32, so that the two brackets 32 are arranged opposite each other on both sides of the middle part 341. The end of the elastic member 5 is provided with a hook, which is inserted between the two brackets 32 and hooked onto the middle part 341 for connection. The middle part 341 with a protrusion on the connecting pin 34 can not only limit the two brackets 32, but also connect the elastic member 5. At the same time, since the elastic member 5 is located on the plane between the two brackets 32, interference between the elastic member 5 and the bracket 32 ​​can be avoided.

[0127] It is understood that the bracket 32 ​​can also be integrally formed with the rotating part 31, that is, the second connecting part 314 provided on the rotating part 31. The second connecting part 314 is provided with a spring hole 315. The spring hole 315 can be directly connected to the elastic member 5. The connecting rod 85 is provided with a connecting pin 34 which is directly rotatably connected to the rotating part 31. Alternatively, the connecting rod 85 is provided with a connecting pin 34 which passes through the spring hole 315 and is connected to the elastic member 5. Both of these are within the protection scope of this invention.

[0128] Furthermore, the drive member 81 is provided with a guide hole 87 for mounting the guide shaft 86. One end of the guide shaft 86 is inserted into the guide hole 87 and fixed. The other end of the guide shaft 86 away from the guide hole 87 passes through the guide groove 46 and is connected to the guide head 88. The guide head 88 is limited and engaged with the driven member 4. The middle part of the guide shaft 86 is slidably engaged in the guide groove 46 to guide the drive member 81 to slide along the direction of the guide groove 46.

[0129] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship conventionally placed during use. They are used only for ease of description and do not indicate that the device or element referred to must have a specific orientation. Therefore, they should not be construed as limiting this invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating relative importance.

[0130] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A switching mechanism for an automatic transfer switch, comprising an energy storage device and a motor (1), wherein the energy storage device is used to control the operation of a contact system, characterized in that: The energy storage device includes an active component (3), a passive component (4), an elastic component (5), and two limiting components (6). The active component (3) is connected to the motor (1), and the elastic component (5) is connected between the active component (3) and the passive component (4). The active component (3) can rotate between the active dual-position, the active normal position, and the active standby position under the drive of the motor (1), and drive the passive component (4) to rotate between the dual-position, the normal position, and the standby position accordingly. When the active component (3) is in the active dual-position, the passive component (4) is in the dual-position and the two limiting components (6) lock the passive component (4) respectively, so that the passive component (4) cannot rotate to the normal position and the standby position. When the active member (3) rotates from the active dual-position to the active common position and the active standby position, it can rotate relative to the driven member (4) and store energy in the elastic member (5). After the active member (3) rotates to the active common position or the active standby position, it drives one of the limiting members (6) to unlock the driven member (4), so that the driven member (4) rotates to the corresponding common position or standby position under the action of the elastic member (5). At the same time, the other limiting member (6) locks the driven member (4) so ​​that it cannot rotate to the dual-position.

2. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The driven member (4) is provided with two limiting structures for each limiting member (6). The two limiting structures are a first limiting tooth (41) and a second limiting tooth (42). When the two limiting members (6) contact the corresponding first limiting tooth (41), the driven member (4) is locked in the double position. When one of the limiting members (6) contacts the corresponding second limiting tooth (42), the driven member (4) is locked in one of the normal position and the spare position. When the other limiting member (6) contacts the corresponding second limiting tooth (42), the driven member (4) is locked in the other of the normal position and the spare position.

3. The switching mechanism of the automatic transfer switch according to claim 2, characterized in that: The driven member (4) has a central hole in the middle, and the two limiting members (6) are located in the middle of the central hole. The driving member (3) is located between the two limiting members (6). The side wall of the central hole has a second boss (43) protruding towards the rotation center. The two ends of the second boss (43) opposite to each other in the rotation direction of the driven member (4) respectively form a second limiting tooth (42). The middle of the second boss (43) has a first boss (44) protruding towards the rotation center. The two ends of the first boss (44) opposite to each other in the rotation direction of the driven member (4) respectively form a first limiting tooth (41). When the driven member (4) is in the double split position, the two limiting members (6) clamp the first boss (44) from both sides and respectively cooperate with the corresponding first limiting tooth (41).

4. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: When the active member (3) rotates from the active normal position or the active standby position to the active double position, it can rotate relative to the driven member (4) and store energy in the elastic member (5). After the active member (3) rotates to the active double position, the active member (3) pushes a limit member (6) that locks the driven member (4) to unlock the driven member (4). After unlocking, the driven member (4) is driven by the elastic member (5) to rotate to the corresponding double position and is limited by the two limit members (6) to prevent it from rotating to the normal position and the standby position.

5. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The driven member (4) has a fixing frame (21) on its side. A limiting arm (25) is provided on the fixing frame (21). When the driven member (4) rotates to the normal position or the standby position, the limiting arm (25) limits the driven member (4) so ​​that the driven member (4) cannot continue to rotate beyond the normal position or the standby position.

6. The switching mechanism of the automatic transfer switch according to claim 5, characterized in that: The energy storage device includes a cover plate (22) disposed opposite to the fixed frame (21). The active member (3), the passive member (4), the elastic member (5), and two limiting members (6) are all disposed between the cover plate (22) and the fixed frame (21). The cover plate (22) is fixedly connected to the passive member (4) through a connecting column. The cover plate (22) is provided with a limiting groove (23). The two groove walls of the limiting groove (23) opposite to each other along the rotation direction of the passive member (4) are respectively provided with limiting surfaces (24). The fixed frame (21) is provided with a limiting arm (25) inserted into the limiting groove (23). When the passive member (4) is in the normal position or the standby position, the limiting arm (25) contacts one of the limiting surfaces (24) to prevent the passive member (4) from continuing to rotate in the direction of the normal position or the standby position, and lock the passive member (4) in the normal position or the standby position.

7. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The energy storage device includes two elastic elements (5), which are symmetrically arranged on both sides of the active element (3). The two elastic elements (5) are connected between the driven element (4) and the active element (3).

8. The switching mechanism of the automatic transfer switch according to claim 7, characterized in that: The driven member (4) is provided with two spring posts (45) protruding to the side. The two spring posts (45) are arranged opposite each other on both sides of the driving member (3). The two elastic members (5) are respectively connected between the two spring posts (45) and the driving member (3). The spring posts (45) are connected between the cover plate (22) and the fixing frame (21).

9. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The two limiting members (6) are rotatably configured. Each limiting member (6) includes a limiting claw (61) and a first connecting part (62) disposed opposite to each other on both sides of the rotation center. The first connecting parts (62) of the two limiting members (6) are connected by a limiting spring (63). The limiting spring (63) is used to drive the two limiting members (6) to rotate, so that the first connecting parts (62) of the two limiting members (6) move closer to each other, while the limiting claws (61) of the two limiting members (6) rotate away from each other, which is used to lock the driven member (4).

10. The switching mechanism of the automatic transfer switch according to claim 9, characterized in that: The limiting member (6) is curved, and the limiting claws (61) and the first connecting part (62) at both ends of the limiting member (6) are bent toward the other limiting member (6).

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