Switching mechanism of automatic change-over switch

Abstract

A switching mechanism of an automatic change-over switch comprises a driving part, a driven part, an elastic part and two limiting parts, the driving part comprises a rotating part and a spring part rotating along with the rotating part, the driven part is rotationally arranged between the rotating part and the spring part, the elastic part is connected between the driven part and the spring part, and when the driving part is located at a driving double-separation position, the elastic part is located at a driving double-separation position. The driven piece is located at the double-separation position and is locked by the two limiting pieces respectively, so that the driven piece cannot rotate to the common position and the standby position; after the driving part rotates to the driving common position or the driving standby position, the driving part drives a limiting part used for preventing the driven part from moving to the corresponding common position or standby position to unlock the driven part, and the driven part is driven by the elastic part to rotate to the corresponding common position or standby position with the axis of the driven part as the rotation center. Meanwhile, the other limiting piece locks the driven piece so that the driven piece can not rotate towards the double-separation position, and each position of the driven piece can be reliably limited by at least one limiting piece.

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 motor-operated 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, comprising an energy storage device

[0006] The energy storage device includes an active member, a driven member, an elastic member and two limit members, the elastic member is connected between the active member and the driven member, the active member can rotate between an active double-split position, an active normal position and an active standby position, driving the driven member to rotate correspondingly between the double-split position, the normal position and the standby position, the active member includes a rotating part and a spring part that rotates with the rotating part, the driven member is rotatably arranged between the rotating part and the spring part, the elastic member is connected between the driven member and the spring part, when the active member is in the active double-split position, the driven member is in the double-split position and the two limit members respectively lock the driven member so that the driven member cannot rotate to the normal position and the standby position; after the active member rotates to the active normal position or the active standby position, it drives a limit member used to prevent the driven member from moving to the corresponding normal position or standby position to unlock the driven member, so that the driven member rotates to the corresponding normal position or standby position with its own axis as the rotation center under the drive of the elastic member, and at the same time, the other limit member locks the driven member so that it cannot rotate to the double-split position.

[0007] Preferably, the driven part includes a driving part and a limiting part relatively arranged at both ends of the axial direction, the driving part is connected to the active part through an elastic part, the limiting part and the two limiting parts are located on the same side of the active part, and the limiting part is inserted between the two limiting parts, and the limiting part is provided with a limiting structure corresponding to each limiting part, and the two limiting parts lock the limiting part through the corresponding limiting structure.

[0008] Preferably, the limiting portion 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-split 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.

[0009] Preferably, a limiting spring is provided between the two limiting members, the limiting spring is connected between one ends of the two limiting members, and one end of the two limiting members away from the limiting spring serves as a rotation center respectively.

[0010] 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.

[0011] Preferably, the active member includes two swing parts respectively connected to the rotating part.

[0012] The two swing parts are arranged opposite to each other, and a spring groove for accommodating the elastic member is provided between the two swing parts. One end of the two swing parts away from the rotating part is provided with a spring part for connecting the elastic member, and the spring part is connected between the two swing parts.

[0013] The rotating part is provided with a driving groove communicated with the spring groove, and the driving part of the driven member is arranged in the driving groove and connected with the elastic member.

[0014] Preferably, a first guide groove is provided on the side wall of the driving groove, and when the active member is located in the active double-split position, the driving portion is located in the middle of the first guide groove; when the active member is located in the active normal position, the driving portion is located at one end of the first guide groove; when the active member is located in the active standby position, the driving portion is located at the other end of the first guide groove.

[0015] Preferably, the rotating part is provided with an arc-shaped second guide groove connected to the driving groove, the first guide groove and the second guide groove are relatively arranged on both sides of the driving groove, and the driving part is provided with a guide shaft for inserting into the second guide groove for sliding fit.

[0016] Preferably, the active member, the driven member and the limiting member are all arranged between the bracket and the fixed frame, and the bracket is provided with two blocking parts, and the two blocking parts are relatively arranged on both sides of the swinging direction of the swinging part, and the two blocking parts are respectively used to block the swinging part in the active normal position and the active standby position, and prevent the active member from crossing the active normal position and the active standby position.

[0017] Preferably, the rotating part is provided with a raised first trigger part on the side close to the limit part, and the first trigger part is inserted between the two limit parts. The two limit parts are respectively provided with a first unlocking part corresponding to the first trigger part. When the active part rotates from the active dual position to the active normal position and the active standby position, the first unlocking part of the corresponding limit part is pushed by the first trigger part to unlock the driven part, so that the driven part can move to the normal position or the standby position accordingly.

[0018] Preferably, the two limiting members are respectively provided with a raised second unlocking portion on the side close to the active member, the second unlocking portions of the two limiting members are relatively arranged on both sides of the rotating member, and the rotating member is respectively provided with a second triggering portion on both sides close to the two second unlocking portions. When the active member is rotated from the active normal position and the active standby position to the active double-split position, one of the second triggering portions drives the corresponding limiting member to unlock the driven member, so that the driven member can be rotated from the normal position and the standby position to the double-split position.

[0019] Preferably, the active member is provided with a handle hole for inserting an operating handle, and the operating handle is used to drive the active member to rotate.

[0020] Preferably, the active member is provided with a driving hole, which is also the rotation center of the active member. The driven member is arranged between the rotation center of the rotating part and the spring part. The motor drives the rotating part to rotate through the motor shaft.

[0021] Preferably, the energy storage device further includes a triggering member connected to the driven member, and a micro switch provided corresponding to the triggering member, wherein the driven member drives the triggering member to rotate through the indicating portion, so that the triggering member triggers the micro switch to switch the output state.

[0022] Preferably, the energy storage device includes three micro switches, which are two first micro switches and one second micro switch. The second micro switch is arranged between the two first micro switches. The second micro switch is used to feedback a dual position signal, and the two first micro switches are used to feedback a normal position signal and a standby position signal respectively.

[0023] Preferably, the trigger member includes two first trigger edges arranged on both sides relative to each other along the rotation direction, one end of the two first trigger edges is connected by a second trigger edge, and the two first trigger edges are provided with a curved indicating edge at one end away from the avoidance groove, and the indicating edge is connected between the two first trigger edges, the two first trigger edges correspond to the two first micro switches respectively, the second trigger edge corresponds to the second micro switch, and the middle part of the second trigger edge is provided with an avoidance groove; when the affected member is in the double-split position, the two first trigger edges are spaced apart from their respective corresponding first micro switches, and the avoidance groove is used to avoid the second micro switch, so that none of the three micro switches contacts the trigger member; when the affected member is in the normal position or the standby position, one of the first trigger edges pushes the corresponding first micro switch, and the second trigger edge pushes the second micro switch, so that one of the first micro switches and the second micro switch switches the output feedback signal to indicate that the affected member is in the normal position.

[0024] Preferably, the trigger member is provided with an indicating edge in a curved shape, and an indicating mark is provided on the indicating edge. The energy storage device is provided with an indicating window. When the trigger member rotates with the driven member, it can drive the corresponding indicating mark to move to the indicating window.

[0025] Preferably, the driven part also includes an indicating part, and the indicating part, the limiting part and the driving part are arranged in sequence along the axial direction. The driving part is provided with a connecting part protruding along the radial direction, and the connecting part is used to connect the elastic part. The limiting part protrudes along the radial direction to form the limiting structure.

[0026] The switching mechanism of the automatic switching switch of the present invention does not require the rotation centers of the active part and the passive part to be arranged to coincide with each other, which can avoid the complex structure of arranging two limit members on the inner side of the passive part and the active part between the two limit members. Instead, the rotation centers of the active part and the passive part are staggered and connected between the active part and the passive part through an elastic part. The passive part can not only quickly switch between the dual position, the normal power position and the backup power position under the drive of the elastic part, but also has fewer parts, a simpler structure and higher stability. When the passive part is unlocked by one of the limit members and rotates to the corresponding normal power position or the backup power position, the other limit member can also remain locked by the corresponding other limit structure and prevent the passive part from rebounding, ensuring that each position can be reliably limited by at least one limit member, which can effectively improve the stability of the operation of the entire system. 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 2-4 Schematic diagram showing that the active member is in the active double-open position and the driven member is in the double-open position;

[0029] Figure 3 This is a schematic diagram of the cooperation between the active component and the bracket in the double split position;

[0030] Figure 4 This is a schematic diagram of the coordination between the indicator and the micro switch in the double-open position;

[0031] Figure 5 It is a structural diagram of the active part of the utility model;

[0032] Figure 6-8 This is a schematic diagram showing that the active member rotates from the active double-open position to the active normal position, but the driven member has not rotated and is still in the double-open position;

[0033] Figure 9-11 This is a schematic diagram showing that the active member is in the active normal position and the driven member is rotated to the normal position;

[0034] Figure 12-14 This is a schematic diagram showing that the active member rotates from the active normal position to the active double-split position, but the driven member has not yet rotated and is still in the normal position;

[0035] In the picture:

[0036] 1 Electric motor

[0037] 2 Fixing bracket

[0038] 3 Active parts

[0039] 4 Actuator

[0040] 5 elastic parts

[0041] 6 Limiting parts

[0042] 7 Trigger

[0043] 8 micro switches

[0044] 21 bracket

[0045] 22 blocking part

[0046] 30 handle hole

[0047] 31 Rotating part

[0048] 32 Spring

[0049] 33 Swinging part

[0050] 34 drive hole

[0051] 35 Spring slot

[0052] 36 drive slots

[0053] 37 First guide groove

[0054] 38 Second guide groove

[0055] 41 Drive unit

[0056] 42 Limiting part

[0057] 43 Instruction Department

[0058] 44 Connection

[0059] 45 Install the shaft

[0060] 60 limit spring

[0061] 61 First Unlocking Section

[0062] 62 Second Unlocking Part

[0063] 63 limit claw

[0064] 71 First trigger edge

[0065] 72 Avoidance slot

[0066] 73 Indicator Edge

[0067] 74 Second trigger edge

[0068] 81 First micro switch

[0069] 82 Second micro switch

[0070] 311 First Trigger Unit

[0071] 312 Second trigger unit

[0072] 411 guide shaft

[0073] 421 First limit tooth

[0074] 422 second limiting tooth DETAILED DESCRIPTION

[0075] 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.

[0076] like Figure 1As 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.

[0077] like Figure 1-4 As shown, an improvement of this embodiment is that the energy storage device includes a fixed frame 2 and an active member 3, a driven member 4, an elastic member 5 and two limit members 6 respectively arranged on the fixed frame 2, the motor 1 is connected to the active member 3, the elastic member 5 is connected between the active member 3 and the driven member 4, the motor 1 can drive the active member 3 to rotate between the active double position, the active normal position and the active standby position, and drive the driven member 4 to rotate between the double position, the normal position and the standby position accordingly, the driven member 4 is directly or indirectly connected to the moving contact of the contact system, the two limit members 6 are used to lock the driven member 4, the active member 3 includes a rotating part 31 connected to the motor 1, and a rotating member 32 connected to the motor 1. The spring portion 32 rotates the moving part 31, and the driven part 4 is arranged between the rotating part 31 and the spring portion 32. An elastic member 5 is provided between the driven part 4 and the spring portion 32, and the elastic member 5 is connected between the driven part 4 and the spring portion 32. The active member 3 can rotate relative to the driven part 4 with the rotating part 31 as the rotation center under the drive of the motor 1, and store energy for the elastic member 5. When the active member 3 rotates to the active double-split position, the active normal position and the active standby position respectively, it can drive the limit member 6 to unlock the driven part 4 and release the elastic member 5, so that the driven part 4 can rotate to the double-split position, the normal position and the standby position respectively with its own axis as the rotation center under the drive of the elastic member 5.

[0078] 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, so that the driven member 4 cannot rotate to the normal position and the standby position; after the active member 3 rotates to the active normal position or the active standby position, it drives a limit member 6 used to prevent the driven member 4 from moving to the corresponding normal position or standby position to unlock the driven member 4, so that the driven member 4 is driven by the elastic member 5 to rotate to the corresponding normal position or standby position with its own axis as the rotation center, and at the same time, the other limit member 6 locks the driven member 4 so that it cannot rotate to the double-split position.

[0079] In the switching mechanism of the automatic transfer switch of this embodiment, the driven member 4 is rotatably arranged between the rotating portion 31 and the spring portion 32. There is no need to arrange the rotation centers of the active member 3 and the driven member 4 to coincide with each other, which can avoid the complex structure in which two limit members 6 are arranged on the inner side of the driven member 4 and the active member 3 is arranged between the two limit members 6. Instead, the rotation centers of the active member 3 and the driven member 4 are staggered and connected between the active member 3 and the driven member 4 by an elastic member 5. The driven member 4 can not only quickly switch between the dual-point position, the normal power position and the backup power position under the drive of the elastic member 5, but also has fewer parts, a simpler structure and higher stability.

[0080] Further, if Figure 2-3 As shown, further, the active member 3 is provided with a handle hole 30 for inserting an operating handle (not shown in the figure), and the operating handle is used to manually drive the active member 3 to rotate. It should be noted that the conversion mechanism of the automatic transfer switch can also drive the active member 3 to rotate not through the motor 1, but through other automatic mechanisms.

[0081] Specifically, the driven member 4 is rotatably mounted on the fixing frame 2 via a mounting shaft 45. The driven member 4 includes a driving portion 41 and a limiting portion 42 relatively arranged at both ends of the axial direction. The driving portion 41 is located on the same side as the active member 3, and the driving portion 41 is connected to the active member 3 via an elastic member 5. The limiting portion 42 is located on the same side as the two limiting members 6, that is, the limiting portion 42 and the two limiting members 6 are located on the same side of the active member 3, and the limiting portion 42 is inserted between the two limiting members 6. The limiting portion 42 is provided with a limiting structure corresponding to each limiting member 6. When the driven member 4 is in the double-split position, the two limiting members 6 respectively lock the limiting portion 42 via the limiting structure, so that the driven member 4 cannot rotate to the normal position and the standby position.

[0082] When the active member 3 rotates from the active double-split position to the active normal position and the active standby position, since the driven member 4 is locked by the limit member 6, the active member 3 can rotate relative to the driven member 4 and stretch the elastic member 5. After the active member 3 rotates to the active normal position or the active standby position, it drives the limit member 6 corresponding to the normal position or the standby position to unlock the driven member 4, so that the driven member 4 rotates to the normal position or the standby position accordingly under the drive of the elastic member 5. At the same time, another limit member 6 locks the driven member 4 so that it cannot rotate to the double-split position.

[0083] The switching mechanism of the automatic transfer switch of this embodiment is such that when the driven 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 also lock the driven member 4 and prevent the driven member 4 from rebounding, thereby ensuring that each position can be reliably limited by at least one limit member 6, which can effectively improve the stability of the entire system operation.

[0084] like Figure 1-2 As shown, the fixing frame 2 is provided with a bracket 21, the active member 3, the driven member 4 and the limit member 6 are all arranged between the bracket 21 and the fixing frame 2, a limit spring 60 is provided between the two limit members 6, the limit spring 60 is connected between one end of the two limit members 6, and the ends of the two limit members 6 away from the limit spring 60 are respectively connected to the bracket 21 as the rotation center. The two limit members 6 can also be directly or indirectly connected to the fixing frame 2 in other ways. The middle of the limit member 6 is respectively provided with a limit claw 63. The positioning portion 42 is provided with two limiting structures corresponding to each limiting member 6. These two limiting structures are respectively a first limiting tooth 421 and a second limiting tooth 422. When the two limiting members 6 respectively contact the corresponding first limiting tooth 421, the driven member 4 is locked in the double-open position. When one limiting member 6 contacts the corresponding second limiting tooth 422, 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 422, the driven member 4 is locked in the other of the normal position and the standby position. In other words, 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 an alternative embodiment, the driven member 4 may be provided with only one limiting structure corresponding to each limiting member 6, solely for locking the driven member 4 in the double-open position. While this embodiment only requires one limiting spring 60, other embodiments may also provide two limiting springs 60, each connected to each of the two limiting members 6.

[0085] like Figure 3 、 5As shown, the active member 3 includes a rotating portion 31 and two swinging portions 33 respectively connected to the rotating portion 31. The active member 3 is provided with a driving hole 34 for being sleeved on the motor shaft. The motor 1 drives the rotating portion 31 to rotate through the motor shaft. The driving hole 34 is also the rotation center of the active member 3. The driven member 4 is arranged between the rotation center of the rotating portion 31 and the spring portion 32. The two swinging portions 33 are arranged opposite to each other. A spring groove 35 for accommodating the elastic member 5 is provided between the two swinging portions 33. One end of the two swinging portions 33 away from the rotating portion 31 is provided with a spring groove 35 for connecting the elastic member 5. The spring portion 32 of the active member 5 is connected between the two swinging portions 33. The rotating portion 31 is provided with a driving groove 36 connected to the spring groove 35. The rotating portion 31 is provided with a first guide groove 37 on one axial side of the driving groove 36. The driving portion 41 of the passive member 4 is disposed within the driving groove 36 and passes through the first guide groove 37 to connect with the limiting portion 42. The end of the driving portion 41 inserted into the driving groove 36 is provided with a connecting portion 44, on which a connecting shaft connected to the elastic member 5 is mounted. The limiting portion 42 is located outside the driving groove 36, that is, outside the rotating portion 31. When the active member 3 rotates relative to the passive member 4, the first guide groove 37 guides and avoids the driving portion 41 of the passive member 4.

[0086] Further, if Figure 3 、 5 As shown, the rotating portion 31 is provided with an arcuate second guide groove 38 that communicates with the driving groove 36. The first guide groove 37 and the second guide groove 38 are arranged on opposite sides of the driving groove 36. The driving portion 41 is provided with a guide shaft 411 for insertion and sliding engagement into the second guide groove 38. The second guide groove 38 and the first guide groove 37 have the same arcuate shape, but are of different sizes. By inserting the guide shaft 411 into the second guide groove 38 and sliding engagement therewith, the driven member 4 not only guides the rotation of the driven member 4 relative to the driving member 3 but also ensures a more balanced force on the driven member 4. In this embodiment, the provision of the second guide groove 38 on the driving member 3 not only guides the movement of the driving member 3 when the driving member 3 rotates relative to the driven member 4, but also limits the position of the driven member 4, preventing the driven member 4 from exceeding the double position, the normal position, and the standby position.

[0087] When the active member 3 is in the active double-split position, the driving portion 41 is located in the middle of the first guide groove 37, and the corresponding guide shaft 411 is located in the middle of the second guide groove 38; when the active member 3 is in the active normal position, the driving portion 41 is located at one end of the first guide groove 37, and the corresponding guide shaft 411 is located at one end of the second guide groove 38; when the active member 3 is in the active standby position, the driving portion 41 is located at the other end of the first guide groove 37, and the corresponding guide shaft 411 is located at the other end of the second guide groove 38.

[0088] Further, if Figure 2 As shown, the rotating part 31 is provided with a raised first trigger part 311 on the side close to the limit member 6, and the first trigger part 311 is arranged between the two limit members 6. The two limit members 6 are respectively provided with a first unlocking part 61 corresponding to the first trigger part 311 on the side of their respective limit claws 63 close to the limit spring 60. When the active member 3 is rotated from the active double-split position to the active normal position and the active standby position, the first unlocking part 61 of the corresponding limit member 6 is pushed by the first trigger part 311 to unlock the driven member 4, so that the driven member 4 can be moved to the normal position or the standby position accordingly. When moving from the double-split position to the normal position or the standby position, unlocking can be achieved through the first trigger part 311, and the structural processability is simpler.

[0089] Further, if Figure 3 As shown, the two limiting members 6 are respectively provided with a raised second unlocking portion 62 on the side close to the active member 3, and the second unlocking portions 62 of the two limiting members 6 are relatively arranged on both sides of the rotating portion 31, and the rotating portion 31 is respectively provided with a second triggering portion 312 on both sides close to the two second unlocking portions 62. When the active member 3 is rotated from the active normal position and the active standby position to the active double-split position, one of the second triggering portions 312 drives the corresponding limiting member 6 to unlock the driven member 4, so that the driven member 4 can be rotated from the normal position and the standby position to the double-split position.

[0090] In this embodiment, the rotating portion 31 is provided with two triggering portions, namely a first triggering portion 311 and a second triggering portion 312. One triggering portion pushes a limiting member 6 to unlock the driven member 4 when the active member 3 rotates from the active double-open position to the active normal position and the active standby position, and the other triggering portion pushes a limiting member 6 to unlock the driven member 4 when the active member 3 rotates from the active normal position and the active standby position to the active double-open position, thereby making the driving engagement more reliable. Obviously, only one triggering portion can also be provided, and when the active member 3 rotates from the active double-open position to the active normal position and the active standby position, or when it rotates from the active normal position and the active standby position to the active double-open position, the same triggering portion pushes the limiting member 6 to unlock the driven member 4.

[0091] like Figure 2-4 As shown, the active member 3 is located in the active double-split position, and the corresponding driven member 4 is located in the double-split position. The limiting claws 63 of the two limiting members 6 cooperate with the two first limiting teeth 421 of the driven member 4 to lock the driven member 4 in the double-split position. The driving part 41 is located in the middle of the first guide groove 37, and the corresponding guide shaft 411 is located in the middle of the second guide groove 38.

[0092] like Figure 6-8As shown, when the active member 3 rotates from the active double-split position to the active normal position and the active standby position, the driven member 4 is locked by the limit member 6 and cannot rotate. The active member 3 can rotate relative to the driven member 4. The active member 3 stretches the elastic member 5 through the spring portion 32 and stores energy in the elastic member 5. The driving portion 41 slides from the middle of the first guide groove 37 to one end of the first guide groove 37 (not shown in the figure) to prevent the driven member 4 from blocking the rotation of the active member 3. The corresponding guide shaft 411 on the driving portion 41 moves to one end of the second guide groove 38.

[0093] like Figure 9-11 As shown, when the active member 3 rotates to the active normal position and the active standby position and triggers the limit member 6 to unlock the passive member 4, the elastic member 5 releases energy, and the passive member 4 rotates to the corresponding normal position or standby position under the pull of the elastic member 5. At this time, the passive member 4 rotates around its own axis, and the driving part 41 is still located at one end of the first guide groove 37, and the corresponding guide shaft 411 on the driving part 41 is still located at one end of the second guide groove 38. Specifically, when the active member 3 rotates to the active normal position and the active standby position, see Figure 9 The first triggering part 311 pushes the right limiting member 6, causing the right limiting claw 63 to avoid the first limiting tooth 421 of the driven member 4. The driven member 4 rotates clockwise to the corresponding normal position or standby position under the pull of the elastic member 5. The limiting claw 63 of the left limiting member 6 cooperates with the second limiting tooth 422 on the left side of the driven member 4, locking the driven member 4 so that the driven member 4 cannot rotate to the double open position. Figure 10 Figure 9 As shown in the back view, when the first trigger portion 311 pushes the limiting member 6 on the right side, the driven member 4 also pushes the second unlocking portion 62 of the limiting member 6 through the second trigger portion 312, thereby jointly driving the limiting member 6 to unlock the driven member 4.

[0094] like Figure 12-14 As shown, when the active member 3 rotates from the active normal position and the active standby position to the active double-split position, the passive member 4 is locked by the limit member 6 and cannot rotate. The active member 3 can rotate relative to the passive member 4 and causes the elastic member 5 to store energy. The driving portion 41 slides from one end of the first guide groove 37 to the middle of the first guide groove 37, and the guide shaft 411 on the corresponding driving portion 41 moves to the middle of the second guide groove 38.

[0095] like Figure 2-4As shown, after the active member 3 moves to the active double-open position and triggers the limiter 6 to unlock the passive member 4, the active member 3 pushes one of the limiters 6 that lock the passive member 4 to unlock the passive member 4, and the elastic member 5 releases energy. After being unlocked, the passive member 4 is driven by the elastic member 5 and rotates to the corresponding double-open position. It is limited by the two limiters 6 and cannot rotate to the normal position and the standby position. The driving part 41 still remains in the middle of the first guide groove 37. Specifically, when the active member 3 rotates to the double-open position, see Figure 3 , Figure 3 The second trigger portion 312 on the right side of the middle active member 3 pushes the second unlocking portion 62 of the right limit member 6, that is, Figure 2 The limiting member 6 on the left side of the middle makes the limiting claw 63 of the limiting member 6 avoid the second limiting tooth 422, Figure 2 The driven member 4 in the middle rotates clockwise to the double-open position, and at the same time, the limiting claws 63 of the limiting members 6 on both sides cooperate with the first limiting teeth 421 on both sides of the driven member 4 to lock the driven member 4.

[0096] It should be noted that the spring portion 32 and the connecting shaft for connecting the elastic member 5 can also be replaced by other structures. For example, through holes are respectively provided on the active member 3 and the passive member 4, so that the two ends of the elastic member 5 are directly hung on the active member 3 and the passive member 4, which all fall within the scope of protection of the present utility model.

[0097] Furthermore, the bracket 21 is provided with two blocking parts 22, and the two blocking parts 22 are relatively arranged on both sides of the swinging direction of the swinging part 33. The two blocking parts 22 are respectively used to block the swinging part 33 in the active normal position and the active standby position, preventing the active part 3 from crossing the active normal position and the active standby position.

[0098] It is understandable that a blocking portion 22 for limiting the swinging portion 33 may be provided on the fixing frame 2, or a third guide groove (not shown in the figure) may be provided on one or both of the fixing frame 2 and the bracket 21, and a guide shaft 411 slidingly fitted through the slide groove may be provided on the swinging portion 33, all of which fall within the scope of protection of the present utility model.

[0099] like Figure 1 、 4 As shown, a trigger member 7 and a micro switch 8 are provided on the side of the bracket 21 away from the actuated member 4. The actuated member 4 is provided with an indicating portion 43 connected to the trigger member 7. The indicating portion 43, the limiting portion 42 and the driving portion 41 are arranged in sequence along the axial direction. The driving portion 41 is provided with a connecting portion 44 protruding in the radial direction. The connecting portion 44 is used to connect the elastic member 5. The limiting portion 42 protrudes in the radial direction to form the limiting structure. A through hole for passing the indicating portion 43 is provided on the bracket 21. The actuated member 4 drives the trigger member 7 to rotate through the indicating portion 43, so that the trigger member 7 triggers the micro switch 8 to switch the output state, and the position of the actuated member 4 is fed back through the signal output by the micro switch 8.

[0100] Specifically, the present embodiment provides three micro switches 8, which are respectively two first micro switches 81 and one second micro switch 82. The second micro switch 82 is provided between the two first micro switches 81. The second micro switch 82 is used to feedback a dual position signal. The two first micro switches 81 are used to feedback a common position signal and a standby position signal respectively. The trigger member 7 includes two planar first trigger edges 71 arranged on both sides opposite to each other along the rotation direction. One end of the two first trigger edges 71 is connected by a curved second trigger edge 74. The ends of the two first trigger edges 71 away from the avoidance groove 72 are provided with a curved indicating edge 73. The indicating edge 73 is connected between the two first trigger edges 71. The two first trigger edges 71 correspond to the two first micro switches 81 respectively, and the second trigger edge 74 corresponds to the second micro switch 82. The middle part of the second trigger edge 74 is provided with an avoidance groove 72.

[0101] When the actuator 4 is in the open position, the two first trigger edges 71 are spaced apart from their corresponding first micro switches 81, and the avoidance groove 72 is used to avoid the second micro switch 82, so that none of the three micro switches 8 contacts the trigger 7, and none of the three micro switches 8 outputs a signal for feedback, indicating that the actuator 4 is in the open position.

[0102] When the actuator 4 is in the normal position, one of the first trigger edges 71 pushes the corresponding first microswitch 81, and the second trigger edge 72 pushes the second microswitch 82, so that the first microswitch 81 and the second microswitch 82 switch to output feedback signals to indicate that the actuator 4 is in the normal position;

[0103] When the actuator 4 is in the standby position, the other first trigger edge 71 pushes the corresponding first micro switch 81, and the second trigger edge 72 pushes the second micro switch 82, so that the first micro switch 81 and the second micro switch 82 switch to output feedback signals to indicate that the actuator 4 is in the standby position.

[0104] This embodiment does not output a feedback signal in the double-open position, and only outputs a signal in the normal position and the standby position. It not only has the characteristics of reasonable design, but also does not require the driven member 4 to directly trigger the micro switch 8. The micro switch 8 is triggered by an independent triggering member 7, which has the characteristics of reliable triggering.

[0105] Furthermore, an indicator mark is provided on the indicator edge 73 of the trigger member 7. In this embodiment, three indicator marks are provided, and the three indicator marks are used to indicate the double position, the normal position and the standby position respectively. The energy storage device is provided with an indicator window. When the trigger member 7 rotates with the driven member 4, it can drive the corresponding indicator mark to move to the indicator window.

[0106] 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.

[0107] 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, characterized in that: The energy storage device comprises an active member (3), a driven member (4), an elastic member (5) and two limit members (6); the active member (3) can rotate between an active split position, an active common position and an active standby position, driving the driven member (4) to rotate correspondingly between the split position, the common position and the standby position; the active member (3) comprises a rotating portion (31) and a spring portion (32) rotating with the rotating portion (31); the driven member (4) is rotatably arranged between the rotating portion (31) and the spring portion (32); the elastic member (5) is connected between the driven member (4) and the spring portion (32); the active member (3) is located When in the active double-split position, the driven member (4) is located in 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; after the active member (3) rotates to the active normal position or the active standby position, it drives a limiting member (6) for preventing the driven member (4) from moving to the corresponding normal position or the standby position to unlock the driven member (4), so that the driven member (4) rotates to the corresponding normal position or the standby position with its own axis as the rotation center under the drive of the elastic member (5), and 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) comprises a driving portion (41) and a limiting portion (42) which are relatively arranged at two axial ends. The driving portion (41) is connected to the active member (3) through an elastic member (5). The limiting portion (42) and the two limiting members (6) are located on the same side of the active member (3), and the limiting portion (42) is inserted between the two limiting members (6). The limiting portion (42) is provided with a limiting structure corresponding to each limiting member (6), and the two limiting members (6) lock the limiting portion (42) through the corresponding limiting structure.

3. The switching mechanism of the automatic transfer switch according to claim 2, characterized in that: The limiting portion (42) is provided with two limiting structures corresponding to each limiting member (6), and the two limiting structures are respectively a first limiting tooth (421) and a second limiting tooth (422). When the two limiting members (6) are in contact with the corresponding first limiting teeth (421), the driven member (4) is locked in a double position. When one limiting member (6) is in contact with the corresponding second limiting tooth (422), 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 (422), the driven member (4) is locked in the other of the normal position and the standby position.

4. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: A limiting spring (60) is provided between the two limiting members (6), the limiting spring (60) is connected between one ends of the two limiting members (6), and one end of the two limiting members (6) away from the limiting spring (60) serves as a rotation center respectively.

5. 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.

6. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The active member (3) includes two swinging parts (33) respectively connected to the rotating part (31). The two swinging parts (33) are arranged opposite to each other, and a spring groove (35) for accommodating the elastic member (5) is provided between the two swinging parts (33). One end of the two swinging parts (33) away from the rotating part (31) is provided with a spring part (32) for connecting to the elastic member (5), and the spring part (32) is connected between the two swinging parts (33). The rotating part (31) is provided with a driving groove (36) communicating with the spring groove (35); the driving part (41) of the driven member (4) is arranged in the driving groove (36) and connected to the elastic member (5).

7. The switching mechanism of the automatic transfer switch according to claim 6, characterized in that: A first guide groove (37) is provided on the side wall of the driving groove (36); when the active member (3) is located in the active double-split position, the driving portion (41) is located in the middle of the first guide groove (37); when the active member (3) is located in the active normal position, the driving portion (41) is located at one end of the first guide groove (37); when the active member (3) is located in the active standby position, the driving portion (41) is located at the other end of the first guide groove (37).

8. The switching mechanism of the automatic transfer switch according to claim 7, characterized in that: The rotating portion (31) is provided with an arc-shaped second guide groove (38) communicating with the driving groove (36); the first guide groove (37) and the second guide groove (38) are relatively arranged on both sides of the driving groove (36); and the driving portion (41) is provided with a guide shaft (411) for inserting into the second guide groove (38) for sliding engagement.

9. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The active member (3), the driven member (4) and the limit member (6) are all arranged between the bracket (21) and the fixed frame (2); the bracket (21) is provided with two blocking parts (22); the two blocking parts (22) are relatively arranged on both sides of the swinging direction of the swinging part (33); the two blocking parts (22) are respectively used to block the swinging part (33) in the active normal position and the active standby position, and prevent the active member (3) from passing the active normal position and the active standby position.

10. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The rotating part (31) is provided with a protruding first triggering part (311) on the side close to the limiting part (6), and the first triggering part (311) is inserted between the two limiting parts (6). The two limiting parts (6) are respectively provided with a first unlocking part (61) corresponding to the first triggering part (311). When the active part (3) rotates from the active dual position to the active normal position and the active standby position, the first unlocking part (61) of the corresponding limiting part (6) is pushed by the first triggering part (311) to unlock the driven part (4), so that the driven part (4) can move to the normal position or the standby position accordingly.

11. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The two limiting members (6) are respectively provided with a raised second unlocking portion (62) on the side close to the active member (3); the second unlocking portions (62) of the two limiting members (6) are relatively arranged on both sides of the rotating member (31); the rotating member (31) is respectively provided with a second triggering portion (312) on both sides close to the two second unlocking portions (62); when the active member (3) rotates from the active normal position and the active standby position to the active double-split position, one of the second triggering portions (312) drives the corresponding limiting member (6) to unlock the passive member (4), so that the passive member (4) can rotate from the normal position and the standby position to the double-split position.

12. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The active member (3) is provided with a handle hole (30) for inserting an operating handle, and the operating handle is used to drive the active member (3) to rotate.

13. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The active member (3) is provided with a driving hole (34), which is also the rotation center of the active member (3). The driven member (4) is arranged between the rotation center of the rotating part (31) and the spring part (32). The motor (1) drives the rotating part (31) to rotate through the motor shaft.

14. The switching mechanism of the automatic transfer switch according to claim 1, characterized in that: The energy storage device further comprises a triggering member (7) connected to the driven member (4), and a micro switch (8) arranged corresponding to the triggering member (7); the driven member (4) drives the triggering member (7) to rotate via the indicating portion (43), so that the triggering member (7) triggers the micro switch (8) to switch the output state.

15. The switching mechanism of the automatic transfer switch according to claim 14, characterized in that: The energy storage device comprises three micro switches (8), the three micro switches (8) being respectively two first micro switches (81) and one second micro switch (82), the second micro switch (82) being arranged between the two first micro switches (81), the second micro switch (82) being used to feed back a dual position signal, and the two first micro switches (81) being used to feed back a normal position signal and a standby position signal.

16. The switching mechanism of the automatic transfer switch according to claim 15, characterized in that: The trigger member (7) comprises two first trigger edges (71) arranged on both sides relative to each other along the rotation direction, one end of the two first trigger edges (71) is connected via a second trigger edge (74), one end of the two first trigger edges (71) away from the avoidance groove (72) is provided with a curved surface-shaped indicating edge (73), the indicating edge (73) is connected between the two first trigger edges (71), the two first trigger edges (71) correspond to two first micro switches (81) respectively, the second trigger edge (74) corresponds to the second micro switch (82), and the middle part of the second trigger edge (74) is provided with an avoidance groove (72); when the actuated member ( 4) When the actuator (4) is in the double-split position, the two first trigger edges (71) are spaced apart from their respective corresponding first micro switches (81), and the avoidance groove (72) is used to avoid the second micro switch (82), so that none of the three micro switches (8) contacts the trigger member (7); when the actuator (4) is in the normal position or the standby position, one of the first trigger edges (71) pushes the corresponding first micro switch (81), and the second trigger edge (72) pushes the second micro switch (82), so that one of the first micro switches (81) and the second micro switch (82) switches to output feedback signals to indicate that the actuator (4) is in the normal position.

17. The switching mechanism of the automatic transfer switch according to claim 14, characterized in that: The triggering member (7) is provided with a curved indicating edge (73), an indicating mark is provided on the indicating edge (73), and the energy storage device is provided with an indicating window. When the triggering member (7) rotates with the driven member (4), the corresponding indicating mark can be driven to move to the indicating window.

18. The switching mechanism of the automatic transfer switch according to claim 2, characterized in that: The driven member (4) further comprises an indicating portion (43), wherein the indicating portion (43), the limiting portion (42) and the driving portion (41) are sequentially arranged along the axial direction, wherein the driving portion (41) is provided with a connecting portion (44) protruding in the radial direction, wherein the connecting portion (44) is used to connect to the elastic member (5), and the limiting portion (42) protrudes in the radial direction to form the limiting structure.

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