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] The utility model relates to the field of low-voltage electrical appliances, in particular to a switching mechanism of an automatic transfer switch. Background Art

[0002] Automatic transfer switches use a switching mechanism to connect and disconnect the primary and backup power sources. For automatic transfer switches with short transfer times, they require not only contact pressure achieved through overtravel but also sufficient contact spacing to ensure stable connection and disconnection between the primary and backup contacts. However, existing automatic transfer switches have a relatively complex contact system structure, resulting in poor stability and prone to malfunction, leading to product failure. Utility Model Content

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

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A switching mechanism for an automatic transfer switch 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 member, a passive member, an elastic member, and two limit members. The active member is connected to the motor, and the elastic member is connected between the active member and the passive member. The active member, driven by the motor, can rotate between an active double-off position, an active normal position, and an active standby position, driving the passive member to correspondingly rotate between the double-off position, the normal position, and the standby position. When the active member is in the active double-off position, the passive member is in the double-off position, and the two limit members respectively lock the passive member, preventing the passive member from rotating toward the normal position and the standby position.

[0006] When the active member rotates from the active double-split position to the active normal position and the active standby position, it can rotate relative to the driven member and cause the elastic member to store energy. After the active member rotates to the active normal position or the active standby position, it drives one of the limiting members to unlock the driven member, so that the driven member rotates to the corresponding normal position or the standby position under the drive of the elastic member, and at the same time the other limiting member locks the driven member so that it cannot rotate to the double-split position.

[0007] Preferably, the driven member is provided with two limiting structures corresponding to each limiting member, and the two limiting structures are respectively a first limiting tooth and a second limiting tooth. When the two limiting members are respectively in contact with the corresponding first limiting teeth, the driven member is locked in a double position. When one of the limiting members is in contact with the corresponding second limiting tooth, the driven member is locked in one of the normal position and the standby 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 standby position.

[0008] Preferably, a middle hole is provided in the middle of the driven member, the two limiting members are arranged in the middle of the middle hole, the active member is arranged between the two limiting members, and a second boss protruding toward the rotation center is provided on the side wall of the middle hole, and the second boss is provided with second limiting teeth at opposite ends along the rotation direction of the driven member, and a first boss protruding toward the rotation center is provided in the middle of the second boss, and the first boss is provided with first limiting teeth at opposite ends along the rotation direction of the driven member. When the driven member is in the double-split position, the two limiting members clamp the first boss from both sides respectively, and respectively cooperate with the corresponding first limiting teeth to limit the position.

[0009] Preferably, when the active part rotates from the active normal position or the active standby position to the active double-split position, it can rotate relative to the driven part and cause the elastic part to store energy. After the active part rotates to the active double-split position, the active part pushes a limit part that locks the driven part to unlock the driven part. After being unlocked, the driven part is driven by the elastic part and rotates to the corresponding double-split position, and is limited by the two limit parts and cannot rotate to the normal position and the standby position.

[0010] Preferably, a fixing frame is provided on the side of the driven member, and a limiting arm is provided on the fixing 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 arranged opposite to the fixed frame, the active member, the driven member, the elastic member and the two limiting members are all arranged between the cover plate and the fixed frame, the cover plate is fixedly connected to the driven member through a connecting column, the cover plate is provided with a limiting groove, and the two groove walls opposite to each other along the rotation direction of the driven member are respectively provided with limiting surfaces, and the fixed frame is provided with a limiting arm inserted into the limiting groove, and when the driven member is in the normal position or the standby position, the limiting arm contacts one of the limiting surfaces, which is used to prevent the driven member from continuing to rotate in the direction of the normal position or the standby position, thereby locking the driven member in the normal position or the standby position.

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

[0013] Preferably, the passive member is provided with two spring columns protruding to the side, the two spring columns are relatively arranged on both sides of the active member, the two elastic members are respectively connected between the two spring columns and the active member, and the spring columns are connected between the cover plate and the fixing frame.

[0014] Preferably, the two limit members are rotatable respectively, and the limit members include limit claws and a first connecting part relatively arranged on both sides of the rotation center. The first connecting parts of the two limit members are connected by a limit spring, and the limit spring is used to drive the two limit members to rotate so that the first connecting parts of the two limit members are close to each other, and at the same time, the limit claws of the two limit members are rotated away from each other to lock the actuated member.

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

[0016] Preferably, the fixing bracket is provided with a second limiting arm, and the second limiting arm is in sliding engagement with the side wall of the middle hole of the driven member.

[0017] Preferably, a plurality of micro switches are provided around the actuated member, and a plurality of trigger parts protruding radially are provided on the actuated member. The plurality of trigger parts correspond to the plurality of micro switches respectively. When the actuated member rotates, the trigger parts drive the corresponding micro switches to switch the output state.

[0018] Preferably, the active member includes a rotating part connected to the motor shaft, and radial protrusions on both sides of the rotating part are provided with unlocking parts for pushing the limiting member to rotate to unlock the driven member.

[0019] Preferably, the rotating portion includes two first flat side surfaces relatively arranged on both sides, and two second curved side surfaces relatively arranged on the other two sides, the two second side surfaces are respectively connected between the two ends of the two first side surfaces, and the two second side surfaces are respectively provided with an unlocking portion, the unlocking portion protrusion is provided on one end of the second side surface connected to one of the first side surfaces, the side surface of the unlocking portion is flush with the first side surface, and the two first side surfaces are respectively provided with a second connecting portion, and the second connecting portion is provided with a spring hole for connecting an elastic member.

[0020] Preferably, the active part includes a rotating part and a bracket, and 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 electric motor. The bracket is provided with a spring hole for connecting the elastic part.

[0021] Preferably, an integrally formed indicating portion is provided on one radial side of the active member, an indicating mark is provided on the indicating portion, and the energy storage device is provided with an indicating window. When the active member rotates, the indicating portion is driven to swing, so that the indicating mark moves to the indicating window.

[0022] Preferably, the indicating portion is provided with a handle hole for inserting an operating handle, and the driving member is driven by the operating handle to drive the active member to rotate.

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

[0024] The switching mechanism of the automatic transfer switch of the present invention locks the activated part respectively by two limit members. When the activated part is in the double-off position, it can be locked by the two limit members respectively, and the activated part cannot rotate in both clockwise and counterclockwise directions. When the activated part is unlocked by one of the limit members and rotates to the corresponding normal power position or backup power position, the other limit member can still remain locked and prevent the activated part from rebounding. The activated part can not only quickly switch between the double-off position, the normal power position and the backup power position under the drive of the elastic member, but each position can also be reliably limited by at least one limit member, which can effectively ensure the stability of the operation of the entire system.

[0025] In addition, by providing an annular driven member, the limiting member and the driving member are arranged in the middle of the driven member, which has the characteristics of a compact structure and can reduce the volume.

[0026] In addition, the active member pulls the active member to rotate via the two elastic members, so that the forces on both sides of the rotation center of the active member and the driven member can be balanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an exploded view of the conversion mechanism of the automatic transfer switch of the utility model;

[0028] Figure 2 This is a structural diagram of the conversion mechanism of the automatic transfer switch of the utility model;

[0029] Figure 3 It is a structural diagram of the energy storage mechanism of the utility model;

[0030] Figure 4 It is a structural diagram of the fixing frame of the utility model;

[0031] Figure 5 This is a schematic diagram of the cooperation of the active part, the driven part, the limit part and the elastic part of the utility model;

[0032] Figure 6 It is a structural diagram of the active part of the utility model;

[0033] Figure 7-9 It is a structural diagram when both the active member and the driven member are in the double-split position;

[0034] Figure 10-11 This is a structural diagram when the active member rotates from the double open position to the normal position, but the passive member is locked in the double open position;

[0035] Figure 12-14 It is a structural diagram of the driven member when it is unlocked and rotated to the common position under the drive of the elastic member;

[0036] Figure 15-17 This is a schematic diagram of the structure when the active member rotates from the normal position to the double open position, but the passive member is locked in the normal position;

[0037] Figure 18 is a schematic structural diagram of a second embodiment of a driving mechanism;

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

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

[0040] Figure 21 is a schematic structural diagram of a third embodiment of a driving mechanism;

[0041] Figure 22 1 is a schematic diagram of the cooperation between the driving member and the active member in the third embodiment of the driving mechanism;

[0042] Figure 23 is a schematic structural diagram of a fourth embodiment of a driving mechanism;

[0043] Figure 24 is a schematic diagram of the coordination of the connecting rod, the active member and the driving member in the fourth embodiment of the driving mechanism;

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

[0045] Figure 26 is a schematic structural diagram of a connecting rod and a driving member in a fourth embodiment of a driving mechanism;

[0046] In the picture:

[0047] 1 Electric motor

[0048] 3 Active parts

[0049] 4 Actuator

[0050] 5 elastic parts

[0051] 6 Limiting parts

[0052] 7 Micro switch

[0053] 11 Motor shaft

[0054] 20 Fixing pin

[0055] 21 Fixing bracket

[0056] 22 Cover

[0057] 23 limit slot

[0058] 24 Limiting surface

[0059] 25 Limiting arm

[0060] 26 Second limiting arm

[0061] 31 Rotating part

[0062] 32 bracket

[0063] 33 Instruction Department

[0064] 34 Connecting pin

[0065] 41 First limiting tooth

[0066] 42 Second limiting tooth

[0067] 43 Second boss

[0068] 44 First boss

[0069] 45 Spring Column

[0070] 46 guide groove

[0071] 61 Limit claw

[0072] 62 First connection

[0073] 63 limit spring

[0074] 81 driving parts

[0075] 82 handle hole

[0076] 83 First Gear

[0077] 84 Second Gear

[0078] 85 connecting rod

[0079] 86 guide shaft

[0080] 87 guide hole

[0081] 88 guide head

[0082] 310 First drive hole

[0083] 311 First side

[0084] 312 Second side

[0085] 313 Unlocking Department

[0086] 314 Second connection

[0087] 315 spring hole

[0088] 320 Second drive hole

[0089] 341 middle part

[0090] 342 Insertion DETAILED DESCRIPTION

[0091] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the conversion mechanism of the automatic transfer switch of the present invention. The conversion mechanism of the automatic transfer switch of the present invention is not limited to the description of the following embodiments.

[0092] like Figure 1 As shown, the conversion mechanism of the automatic transfer switch of this embodiment includes a contact system (not shown in the figure), an energy storage device and a motor 1. The contact system is provided with at least two pairs of static contacts and a moving contact arranged between the at least two pairs of static contacts. The two pairs of static contacts are respectively connected to the normal power supply and the backup power supply. The motor 1 is used to store energy for the energy storage device. The energy storage device is used to drive the contact system to operate when releasing energy, thereby realizing switching between the normal power supply and the backup power supply, or disconnecting the normal power supply and the backup power supply at the same time.

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

[0094] When the active member 3 rotates from the active double-split position to the active normal position and the active standby position, it can rotate relative to the driven member 4 and cause the elastic member 5 to store energy. 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 the standby position under the drive 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 double-split position.

[0095] When the actuator 4 rotates to the double-open position, the two ends of the moving contact are driven to separate from the two pairs of static contacts and disconnect the normal power supply and the backup power supply. When the actuator 4 rotates to the normal position, the two ends of the moving contact contact with one of the pairs of static contacts and conduct the normal power supply. When the actuator 4 rotates to the backup position, the two ends of the moving contact contact with the other pair of static contacts and conduct the backup power supply.

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

[0097] like Figure 2 As shown, the driven member 4 of this embodiment is annular, and a middle hole is provided in the middle of the driven member 4, the two limiting members 6 are arranged in the middle of the middle hole, and the active member 3 is arranged between the two limiting members 6, and two limiting structures are provided on the side wall of the middle hole corresponding to each limiting member 6, and the two limiting structures are respectively a first limiting tooth 41 and a second limiting tooth 42, that is, two first limiting teeth 41 and two second limiting teeth 42 are provided on the side wall of the middle hole, and the two first limiting teeth 41 are located between the two second limiting teeth 42. When the two limiting members 6 respectively contact the corresponding first limiting teeth 41, the driven member 4 is locked in the double-split position. When one limiting member 6 contacts the corresponding second limiting tooth 42, the driven member 4 is locked in one of the normal position and the standby 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 standby position. That is, the two limiting members 6 are used not only to lock the driven member 4 in the double open position, but also to lock the driven member 4 in the normal position and the standby position. As another modified embodiment, the driven member 4 may be provided with only one limiting structure corresponding to each limiting member 6, which is used only to lock the driven member 4 in the double open position.

[0098] In this embodiment, the sidewall of the middle hole is provided with a second boss 43 protruding toward the center of rotation. The second boss 43 has two opposing ends along the rotation direction of the driven member 4, each forming a second limiting tooth 42. A first boss 44 is provided in the middle of the second boss 43, protruding toward the center of rotation. The first boss 44 has two opposing ends along the rotation direction of the driven member 4, each forming a first limiting tooth 41. When the driven member 4 is in the dual-position, the two limiting members 6 engage with the corresponding first limiting teeth 41, respectively, and clamp the first boss 44 from both sides. When the driven member 4 is in the normal position or the standby position, one of the limiting members 6, driven by the active member 3, clears the corresponding first limiting tooth 41 and second limiting tooth 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 provides an annular driven member 4, with the limiting member 6 and active member 3 positioned in the middle of the driven member 4, resulting in a compact structure and reduced size.

[0099] Furthermore, the two limiting members 6 are rotatably arranged, and the limiting members 6 include limiting claws 61 and first connecting portions 62 relatively arranged on either side of the rotation center. The limiting members 6 are curved, and the limiting claws 61 and first connecting portions 62 at both ends of the limiting member 6 are respectively bent in a direction close to 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 is used to drive the two limiting members 6 to rotate, so that the first connecting portions 62 of the two limiting members 6 approach each other, while causing the limiting claws 61 of the two limiting members 6 to rotate away from each other, thereby locking the actuated member 4, that is, respectively contacting the corresponding limiting structures on the side walls of the middle hole of the actuated member 4. Of course, two limiting springs 63 can also be provided, and the two limiting springs 63 can respectively drive the two limiting members 6 to lock the actuated member 4, or the limiting spring 63 can be a torsion spring or a spring of other shapes, all of which fall within the scope of protection of the present utility model.

[0100] Furthermore, the driven member 4 is fixedly connected to the cover plate 22 via a connecting column. 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 connected to the moving contact.

[0101] Further, refer to Figure 9 、 14 17. A limit arm 25 is provided on the upper side of the driven member 4. When the driven member 4 rotates to the normal position or the standby position, the limit arm 25 limits the driven member 4 so that the driven member 4 cannot rotate beyond the normal position or the standby position. The limit arm 25 may be one or two. As another inferior embodiment, the limit arm 25 may not be provided. The elastic member 5 releases energy to drive the driven member 4 to the equilibrium position and then stops rotating. However, this method is prone to rebound swing and poor reliability.

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

[0103] When the actuator 4 rotates from the double-open position to the normal position or the standby position, the limiting arm 25 contacts one of the limiting surfaces 24 when the actuator 4 rotates to the desired position, thereby preventing the actuator 4 from further rotating. At the same time, the unlocked limiting member 6 prevents the actuator 4 from rebounding.

[0104] When the driven member 4 rotates from the normal position or the standby position to the double open 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 open position by the two limiting members 6.

[0105] It is understandable that the limiting groove 23 may also be provided on the driven member 4, and the driven member 4 may be directly limited by the limiting arm 25 on the fixing frame 21, which all falls within the protection scope of the present utility model.

[0106] Furthermore, the fixing frame 21 is provided with a second limiting arm 26 , which is engaged with the side wall of the middle hole of the driven member 4 in a limiting manner. 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 members 5, which are symmetrically arranged on both sides of the active member 3. The two elastic members 5 are tension springs. The passive member 4 is provided with two spring columns 45 protruding to the side. The two spring columns 45 are relatively arranged on both sides of the active member 3. The two elastic members 5 are respectively connected between the two spring columns 45 and the active member 3.

[0108] In this embodiment, the active member 3 pulls the passive member 4 to rotate via two elastic members 5, thereby balancing the forces on both sides of the rotation center of the active member 3 and the passive member 4. Preferably, the spring column 45 is connected between the cover plate 22 and the passive member 4, connecting the elastic members 5 and also serving as a connecting column.

[0109] Of course, the active member 3 can also pull the driven member 4 to rotate through an elastic member 5. The elastic members 5 can also be provided with more than three. The three or more elastic members 5 are centrally symmetrically arranged, which can also improve the balance on both sides of the rotation center of the active member and the driven 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 of the driven member 4, and cooperate with the first limiting teeth 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 standby position.

[0111] like Figure 10-11 As shown, when the active member 3 rotates from the active double-split position to the active normal 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, so that the limiting member 6 drives the limiting claw 61 away from the first limiting tooth 41 serving as the limiting structure to unlock the driven member 4. The driven member 4 cannot rotate before being unlocked. 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 and rotates from the double-open position to the normal position or the standby position, so that the other limiting member 6 is limited by the second limiting tooth 42 as another limiting structure, and at the same time, the limiting arm 25 is limited by a limiting surface 24 in the limiting groove 23. The positive and reverse rotations of the driven member 4 are respectively limited by the limiting member 6 and the limiting arm 25 and cannot be rotated. Figure 13 As shown, Figure 13 The upper limit member 6 is driven by the active member 3 to release the limit from 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 limit arm 25 restricts it from continuing to rotate counterclockwise. At the same time, the lower limit member 6 cooperates with the second limit tooth 42 of the driven member 4 to prevent the driven member 4 from rotating 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 open position, it can rotate relative to the driven member 4 and cause the elastic member 5 to store energy. After the active member 3 rotates to the active double open position, the active member 3 pushes a limiting member 6 that locks the driven member 4, that is, pushes the limiting member 6 that is limited by the second limiting tooth 42. Figure 16 The limiting member 6 at the lower middle position separates the limiting member 6 from the second limiting tooth 42 and unlocks the driven member 4. The driven member 4 cannot rotate before being unlocked. At this time, the rotation of the active 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 and rotates back to the double open position, and is limited by the two limit members 6, so that the driven member 4 cannot rotate to the normal position and the standby position. Figure 10-14 The same action process is shown, only the rotation direction is opposite. When the driven member 4 rotates to the double-open position, the two limiting members 6 limit the driven member 4 from both sides.

[0115] Furthermore, a plurality of micro switches 7 are provided on the fixing frame 21, and the plurality of micro switches 7 are surrounded by the driven member 4. The driven member 4 is provided with a plurality of trigger parts protruding along the radial direction, and the plurality of trigger parts correspond to the plurality of micro switches 7 respectively. When the driven member 4 rotates, the trigger part drives the corresponding micro switch 7 to switch the output state. The micro switch 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.

[0116] like Figure 6 As shown, the active member 3 includes a rotating portion 31 with a waist-shaped cross-section, a first driving hole 310 for connecting to the motor shaft 11 is provided in the middle of the rotating portion 31, and the radial protrusions on both sides of the rotating portion 31 are provided with unlocking portions 313 for pushing the limiting member 6 to rotate to unlock the driven member 4. In this embodiment, the rotating portion 31 includes two planar first side surfaces 311 relatively arranged on both sides, and two curved second side surfaces 312 relatively arranged 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, and the two second side surfaces 312 are respectively provided with an unlocking portion 313 for pushing the limiting member 6 to rotate to unlock the driven member 4, the unlocking portion 313 is protruded and arranged on one end of the second side surface 312 connected to one of the first side surfaces 311, and the side surface of the unlocking portion 313 is flush with the first side surface 311, the two first side surfaces 311 are respectively provided with a second connecting portion 314, and the second connecting portion 314 is provided with a spring hole 315 for connecting the elastic member 5. When the unlocking portion 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 the embodiment, the active member 3 includes a rotating portion 31 and a bracket 32. The bracket 32 ​​is provided with a second drive hole 320 for connecting to the motor shaft 11. The bracket 32 ​​is provided with a spring hole 315 for connecting to the elastic member 5. The bracket 32 ​​is used to connect to the elastic member 5 and is linked to the rotating portion 31 through the motor shaft 11. The bracket 32 ​​is equivalent to the second connecting portion 314 provided separately from the connecting portion. Of course, the bracket 32 ​​and the rotating portion 31 can also be an integral structure, and the bracket 32 ​​and the rotating portion 31 can also be made of two different materials, with the bracket 32 ​​being integrally formed with the rotating portion 31 as an insert.

[0118] like Figure 5 As shown, an integrally formed indicator portion 33 is provided on one radial side of the active member 3. The indicator portion 33 is provided with an indicator mark, and the energy storage device is provided with an indicator window. When the active member 3 rotates, the indicator portion 33 swings, 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 portion 33 can also be separated from the active member 3 and installed on the active member 3.

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

[0120] like Figure 5 The first embodiment of the manual operating mechanism is shown. In this embodiment, the manual operating mechanism includes the indicating portion 33. The indicating portion 33 serves as the driving member 81 of the manual operating mechanism. The indicating portion 33 is provided with the handle hole 82. The indicating portion 33 has both the indicating and operating functions, which is very convenient. Obviously, the manual operating mechanism may not have the 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 is integrally formed with the active member 3, the driving member 81 is located on one side of the active member 3 in the radial direction, and the handle hole 82 is provided at the end of the driving member 81 away from the active member 3. 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 hand-operated mechanism is shown, in which the driving member 81 is rotatably arranged on the fixed frame 21, and a first gear 83 is provided on the driving member 81, and a second gear 84 is provided on the active member 3. The first gear 83 is meshed with the second gear 84, and when the driving member 81 rotates, the active member 3 is driven to rotate by the first gear 83 and the second gear 84. Preferably, an indicator portion 33 is provided on the cover plate 22, and the energy storage device is provided with an indicator window. The cover plate 22 is provided with a plurality of bending structures bent toward the side close to the actuated member 4, and the indicator portion 33 is arranged in a curved shape. The indicator portion 33 is installed on the outside of the plurality of bending structures. When the actuated member 4 rotates, the indicator portion 33 is driven to rotate by the cover plate 22, and the working status can be directly observed through the indicator window. Of course, the indicator portion 33 can also be integrally formed with the cover plate 22, and both fall within the scope of protection of the present utility model.

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

[0123] like Figure 23-26 A fourth embodiment of the hand-operated mechanism is shown, in which the driving member 81 is rotatably arranged on the driven member 4, and the driven member 4 is provided with an arc-shaped guide groove 46, the arc center of the guide groove 46 coincides with the rotation center of the active member 3, and the hand-operated mechanism further comprises two connecting rods 85, which are relatively arranged on both sides of the rotation center of the active member 3, one end of the two connecting rods 85 is respectively rotatably connected to the active member 3, and the ends of the two connecting rods 85 away from the active member 3 are respectively rotatably connected to the driving member 81. When the driving member 81 slides toward 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 active member 3, and drive one of the connecting rods 85 to push the active member 3, and at the same time drive the other connecting rod 85 to pull the active member 3, so that the active member 3 rotates.

[0124] It is understandable that the driving member 81 may also be disposed between the driven member 4 and the fixing frame 21 and rotatably disposed on the fixing frame 21 , and all of these fall within the scope of protection of the present invention.

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

[0126] Furthermore, it includes two of the brackets 32, a connecting pin 34 is provided between the two brackets 32, a connecting rod 85 is hinged to the bracket 32 ​​through the connecting pin 34, the connecting pin 34 is connected between the two brackets 32, 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 middle portion 341 and two inserting portions 342 arranged on both sides of the middle portion 341, the diameter of the middle portion 341 is larger than the diameter of the two inserting portions 342, and one of the inserting portions 342 is inserted into one bracket 32. In the middle, another insertion portion 342 passes through the connecting rod 85 and is inserted into the other bracket 32, so that the two brackets 32 are relatively arranged on both sides of the middle portion 341. The end of the elastic member 5 is provided with a hook, which is inserted between the two brackets 32 and hooked on the middle portion 341 for connection. The raised middle portion 341 is provided on the connecting pin 34, which not only limits the two brackets 32, but also plays the role of connecting the elastic member 5. At the same time, since the elastic member 5 is located in the plane between the two brackets 32, interference between the elastic member 5 and the bracket 32 ​​can also be avoided.

[0127] It can be understood that the bracket 32 ​​can also be integrally formed with the rotating part 31, that is, the second connecting part 314 is provided on the rotating part 31, and 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. A connecting pin 34 is provided on the connecting rod 85 to be directly rotatably connected to the rotating part 31, or a connecting pin 34 is provided on the connecting rod 85 to pass through the spring hole 315 for connection, and the elastic member 5 is then connected to the connecting pin 34, all of which fall within the protection scope of the present utility model.

[0128] Furthermore, the driving member 81 is provided with a guide hole 87 for installing the guide shaft 86. One end of the guide shaft 86 is inserted into the guide hole 87 for fixation, and the 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 limitedly engaged with the driven member 4, and the middle part of the guide shaft 86 slides in the guide groove 46 to guide the driving member 81 to slide along the direction of the guide groove 46.

[0129] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0130] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall 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, and wherein: The energy storage device comprises an active member (3), a driven 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 driven member (4); the active member (3) is driven by the motor (1) to rotate between an active double-split position, an active normal position and an active standby position, and drives the driven member (4) to rotate between the double-split position, the normal position and the standby position accordingly; when the active member (3) is located at the active double-split position, the driven member (4) is located at the double-split position and the two limiting members (6) respectively lock the driven member (4), so that the driven member (4) cannot rotate to the normal position and the standby position; When the active member (3) rotates from the active double-split position to the active normal position and the active standby position, it can rotate relative to the driven member (4) and cause the elastic member (5) to store energy. 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 the standby position under the drive 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 double-split 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 corresponding to each limiting member (6), and the two limiting structures are respectively a first limiting tooth (41) and a second limiting tooth (42). When the two limiting members (6) are in contact with the corresponding first limiting teeth (41), the driven member (4) is locked in a double position. When one limiting member (6) is in contact with the corresponding second limiting tooth (42), the driven member (4) is locked in one of the normal position and the standby position. When the other limiting member (6) is in contact with the corresponding second limiting tooth (42), the driven member (4) is locked in the other of the normal position and the standby position.

3. The switching mechanism of the automatic transfer switch according to claim 2, characterized in that: The middle part of the driven member (4) is provided with a middle hole, the two limiting members (6) are arranged in the middle part of the middle hole, the active member (3) is arranged between the two limiting members (6), the side wall of the middle hole is provided with a second boss (43) protruding toward the rotation center, the second boss (43) has two opposite ends along the rotation direction of the driven member (4) respectively forming a second limiting tooth (42), the middle part of the second boss (43) is provided with a first boss (44) protruding toward the rotation center, the first boss (44) has two opposite ends along the rotation direction of the driven member (4) respectively forming a first limiting tooth (41), when the driven member (4) is in the double-split position, the two limiting members (6) respectively clamp the first boss (44) from both sides, and respectively cooperate with the corresponding first limiting tooth (41) to limit the position.

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-split position, it can rotate relative to the driven member (4) and cause the elastic member (5) to store energy. After the active member (3) rotates to the active double-split position, the active member (3) pushes a limiting member (6) that locks the driven member (4) to unlock the driven member (4). After being unlocked, the driven member (4) is driven by the elastic member (5) to rotate to the corresponding double-split position and is limited by the two limiting members (6) so as not to rotate to the normal position and the standby position.

5. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: A fixing frame (21) is provided on the side of the driven member (4), and 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 comprises a cover plate (22) arranged opposite to a fixing frame (21); the active member (3), the passive member (4), the elastic member (5) and the two limiting members (6) are all arranged between the cover plate (22) and the fixing frame (21); the cover plate (22) is fixedly connected to the passive member (4) via a connecting column; the cover plate (22) is provided with a limiting groove (23); 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 fixing 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, thereby locking 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 comprises two elastic members (5), the two elastic members (5) are symmetrically arranged on both sides of the active member (3), and the two elastic members (5) are connected between the passive member (4) and the active member (3).

8. The switching mechanism of the automatic transfer switch according to claim 7, characterized in that: The passive member (4) is provided with two spring columns (45) protruding toward the side, the two spring columns (45) are arranged oppositely on both sides of the active member (3), the two elastic members (5) are respectively connected between the two spring columns (45) and the active member (3), and the spring columns (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 arranged respectively. The limiting members (6) include limiting claws (61) and first connecting parts (62) relatively arranged 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) are close to each other, and at the same time, the limiting claws (61) of the two limiting members (6) are rotated away from each other, so as to lock the actuated 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 portion (62) at both ends of the limiting member (6) are respectively bent in a direction close to the other limiting member (6).

11. The switching mechanism of the automatic transfer switch according to claim 5, characterized in that: The fixing frame (21) is provided with a second limiting arm (26), and the second limiting arm (26) is in sliding engagement with the side wall of the middle hole of the driven member (4).

12. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: A plurality of micro switches (7) are provided around the driven member (4), and a plurality of triggering parts protruding in the radial direction are provided on the driven member (4). The plurality of triggering parts correspond to the plurality of micro switches (7) respectively. When the driven member (4) rotates, the triggering parts drive the corresponding micro switches (7) to switch output states.

13. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The active member (3) comprises a rotating portion (31) connected to the motor shaft (11), and radially protruding projections on both sides of the rotating portion (31) are provided with unlocking portions (313) for pushing the limiting member (6) to rotate to unlock the driven member (4).

14. The switching mechanism of the automatic transfer switch according to claim 13, characterized in that: The rotating portion (31) comprises two first side surfaces (311) arranged on two opposite sides and being planar, and two second side surfaces (312) arranged on the other two opposite sides and being curved. 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 an unlocking portion (313). The unlocking portion (313) is convexly arranged on one end of the second side surface (312) connected to one of the first side surfaces (311). The side surface of the unlocking portion (313) is flush with the first side surface (311). The two first side surfaces (311) are respectively provided with a second connecting portion (314). The second connecting portion (314) is provided with a spring hole (315) for connecting the elastic member (5).

15. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The active member (3) comprises a rotating portion (31) and a bracket (32); the rotating portion (31) and the bracket (32) are respectively provided with a first driving hole (310) and a second driving hole (320) for connecting to a motor shaft (11); the rotating portion (31) and the bracket (32) are respectively connected to the motor shaft (11); the motor shaft (11) is connected to the electric motor (1); and the bracket (32) is provided with a spring hole (315) for connecting to an elastic member (5).

16. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: An integrally formed indicating portion (33) is provided on one radial side of the active member (3), an indicating mark is provided on the indicating portion (33), and an indicating window is provided on the energy storage device. When the active member (3) rotates, the indicating portion (33) is driven to swing, causing the indicating mark to move to the indicating window.

17. The switching mechanism of the automatic transfer switch according to claim 16, characterized in that: The indicating portion (33) is provided with a handle hole (82) for inserting an operating handle, and the driving member (81) is driven by the operating handle to drive the active member (3) to rotate.

18. The switching mechanism of the automatic transfer switch according to claim 15, characterized in that: The bracket (32) and the rotating part (31) are made of different materials, and the bracket (32) is formed integrally with the rotating part (31) as an insert.

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