Dual-power change-over switch
By introducing a pair of locking elements into the dual power transfer switch, and using a rotating element to drive the locking elements to switch positions, the problem of the moving contact bouncing in the opposite direction is solved, thus preventing arcing during rapid power switching and reducing material costs.
Patent Information
- Application Number
- CN202520505592.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-21
AI Technical Summary
In dual-power transfer switches, the moving contact is prone to bounce in the opposite direction during rapid closing, leading to adverse consequences such as arcing, which is especially noticeable when the switching time is short.
The design employs a pair of locking components. The rotating component drives the locking component to switch between the unlocked and locked positions, preventing the mating component from rotating and thus locking the moving contact assembly in the closed position to prevent it from bouncing in the opposite direction.
It effectively prevents the moving contact from bouncing in the opposite direction during rapid closing, reduces arcing, and has a compact structure that reduces material costs.
Smart Images
Figure CN223911549U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Embodiments of the present disclosure generally relate to the technical field of electrical equipment, and more particularly, to dual power transfer switches. BACKGROUND
[0002] To achieve fast switching between a main power source and a backup power source, conventional dual power transfer switches usually have elements and structures capable of pre-storing energy in the mechanism, such as a main spring assembly, a movable contact head can be coupled to the main spring assembly, whereby the main spring assembly rapidly releases energy when switching power is needed, to quickly drive the contact head towards or away from the static contact head assembly. SUMMARY
[0003] In one aspect of the present disclosure, a dual power transfer switch is provided, comprising: a bracket; at least one engaging piece rotatably disposed on the bracket; at least one movable contact head assembly coupled to the at least one engaging piece and adapted to be driven by the at least one engaging piece; an energy storage assembly rotatably disposed on the bracket and comprising an energy storage shaft; a rotating piece coupled to the energy storage shaft and adapted to be driven by the energy storage shaft; and a pair of locking pieces each rotatably disposed on the bracket and each adapted to be driven by the rotating piece to switch between an unlocked position and a locked position, each of the pair of locking pieces adapted to prevent rotation of the corresponding engaging piece to lock the at least one movable contact head assembly when in the locked position.
[0004] According to embodiments of the present disclosure, each of the pair of locking pieces can be driven by the rotating piece and can prevent rotation of the corresponding engaging piece when in the locked position, and since the at least one movable contact head assembly is coupled to the at least one engaging piece, the at least one movable contact head assembly can be locked in the closed position. In this way, the at least one movable contact head assembly is prevented from bouncing in the opposite direction during fast closing, thereby effectively preventing arcing.
[0005] In some embodiments, the pair of locking pieces each comprises a rotating portion facing away from the rotating piece, and the bracket comprises a pair of rotating shafts, the rotating portions of the pair of locking pieces each being coupled to a corresponding rotating shaft of the pair of rotating shafts.
[0006] In some embodiments, the pair of locking pieces each further comprises a limiting portion connected to the rotating portion, and the limiting portion is adapted to be driven by the rotating piece.
[0007] In some embodiments, the rotating piece comprises a first portion disposed around the energy storage shaft and a second portion disposed peripherally to the first portion, and the second portion is adapted to drive the limiting portion.
[0008] In some embodiments, the at least one mating piece includes a pair of mating pieces, the at least one movable contact assembly includes a pair of movable contact assemblies, the pair of movable contact assemblies are each coupled to a respective mating piece of the pair of mating pieces and adapted to be driven by the respective mating piece to switch between a closed position and an open position, and each of the pair of locking pieces, when in the locking position, is adapted to prevent rotation of the respective mating piece to lock a respective movable contact assembly of the pair of movable contact assemblies in the closed position.
[0009] In some embodiments, the limiting portion includes a limiting surface, the pair of mating pieces each includes a protruding portion, and the protruding portion of a respective mating piece of the pair of mating pieces is adapted to abut against the limiting surface of a respective locking piece of the pair of locking pieces.
[0010] In some embodiments, the double power transfer switch further includes a pair of elastic pieces, and each of the pair of elastic pieces is coupled to a respective locking piece of the pair of locking pieces and the support.
[0011] In some embodiments, the at least one mating piece includes a single mating piece, the at least one movable contact assembly includes a single movable contact assembly, and the single movable contact assembly is coupled to the single mating piece and adapted to be driven by the single mating piece to switch between a first closed position and a second closed position.
[0012] In some embodiments, one of the pair of locking pieces, when in the locking position, is adapted to prevent rotation of the single mating piece to lock the single movable contact assembly in the first closed position, and another of the pair of locking pieces, when in the locking position, is adapted to prevent reverse rotation of the single mating piece to lock the single movable contact assembly in the second closed position.
[0013] In some embodiments, the limiting portion includes a limiting surface, the mating piece includes a protruding portion, and the protruding portion is adapted to abut against the limiting surface of a respective locking piece of the pair of locking pieces when the single movable contact assembly is in the first closed position or the second closed position.
[0014] In some embodiments, the double power transfer switch further includes a pair of elastic pieces, and each of the pair of elastic pieces is coupled to a respective locking piece of the pair of locking pieces and the support.
[0015] It should be understood that nothing in this section is intended to limit the key or important features of the embodiments of the present disclosure, nor is it meant to limit the scope of the present disclosure. Other features of the present disclosure will be better appreciated from the following description. BRIEF DESCRIPTION OF DRAWINGS
[0016] The above and other features, aspects and advantages of the present disclosure will become more apparent with reference to the following detailed description when taken in conjunction with the accompanying drawings wherein:
[0017] Figure 1 A partial structural schematic diagram of a dual power transfer switch is shown according to some embodiments of the present disclosure;
[0018] Figure 2 A partial structural schematic diagram of a dual power transfer switch is shown according to some embodiments of the present disclosure; Figure 1 A structural schematic diagram of the cooperating piece and the movable contact assembly is shown;
[0019] Figure 3 A structural schematic diagram of the cooperating piece and the movable contact assembly is shown; Figure 1 A structural schematic diagram of the locking piece is shown;
[0020] Figures 4 to 8 A working state schematic diagram of a dual power transfer switch is shown according to some embodiments of the present disclosure;
[0021] Figure 9 A partial structural schematic diagram of a dual power transfer switch is shown according to some embodiments of the present disclosure;
[0022] Figures 10 to 12 A working state schematic diagram of a dual power transfer switch is shown according to some embodiments of the present disclosure.
[0023] BRIEF DESCRIPTION OF DRAWINGS
[0024] 100 is a dual power transfer switch;
[0025] 1 is a support, 11 is a rotating shaft, and 12 is a main shaft;
[0026] 2 is a cooperating piece, and 21 is a protruding part;
[0027] 3 is a movable contact assembly, and 31 is a connecting shaft;
[0028] 4 is an energy storage assembly, and 41 is an energy storage shaft;
[0029] 5 is a rotating piece, 51 is a first part, and 52 is a second part;
[0030] 6 is a locking piece, 61 is a rotating part, 62 is a limiting part, and 621 is a limiting surface;
[0031] 7 is an elastic piece. DETAILED DESCRIPTION
[0032] Preferred embodiments of the present disclosure will be described in greater detail below, with reference made to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.
[0033] The term "comprising" and variations thereof as used herein are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "or" as used herein is intended to mean "and / or" unless otherwise indicated. The term "based on" means "based, at least in part, on" unless otherwise indicated. The terms "one example embodiment" and "an example embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "a first," "a second," etc. do not require that there be only one of the indicated objects.
[0034] As described above, the energy storage elements such as the main spring assembly and the energy storage structure can quickly release energy when the power needs to be switched, to quickly drive the moving contact towards or away from the stationary contact assembly, to achieve the closing operation and opening operation. Impact and vibration are prone to occur during the closing process, resulting in adverse consequences such as moving contact bounce, arc, etc. As an example, in a double power transfer switch with a short switching time (e.g. no more than 20 ms), the main spring assembly stores more energy in advance, resulting in faster energy release during switching, faster movement of the moving contact, and therefore greater impact of the moving contact on the stationary contact, making the moving contact bounce more violently. Embodiments of the present disclosure provide a double power transfer switch to at least partially solve the above problems. In the following, the double power transfer switch will be described in detail in conjunction with the accompanying drawings. Figures 1 to 12 The principles of the present disclosure are described.
[0035] Figure 1 A partial structural schematic of a double power transfer switch 100 according to some embodiments of the present disclosure is shown. Figure 2 A partial structural schematic of a double power transfer switch 100 according to some embodiments of the present disclosure is shown. Figure 1 A structural schematic of the cooperating piece 2 and the moving contact assembly 3 is shown. As shown in the figure, Figure 1 And Figure 2 As shown, the double power transfer switch 100 described herein generally includes a bracket 1, at least one cooperating piece 2, at least one moving contact assembly 3, an energy storage assembly 4, a rotating piece 5, a pair of locking pieces 6, at least one elastic piece 7, and a main spring assembly (not shown in the figure).
[0036] Referring to Figure 1 And Figure 2In some embodiments, the energy storage assembly 4 can be rotatably arranged on the support 1 and can be driven by a driving gear of an electric motor (not shown in the figure). The energy storage assembly 4 can include a gear set structure, for example, and embodiments of the present disclosure do not repeat the description of this. The main spring assembly can be rotatably arranged on the support 1 and can be driven by the energy storage assembly 4, so that the main spring assembly can store energy and prepare for driving the movement of the at least one cooperating piece 2.
[0037] It can be understood that, in the energy release process, the main spring assembly can drive the at least one cooperating piece 2 to move, and since the at least one movable contact assembly 3 is coupled to the at least one cooperating piece 2, the at least one movable contact assembly 3 can be driven by the at least one cooperating piece 2, so that the at least one movable contact assembly 3 can move towards the stationary contact assembly to achieve the closing operation.
[0038] Further, the support 1 can include at least one main shaft 12. The at least one cooperating piece 2 can be coupled to the corresponding main shaft 12, so that the at least one cooperating piece 2 can be rotatably arranged on the support 1.
[0039] Continuing to refer to Figure 1 In some embodiments, the energy storage assembly 4 can include an energy storage shaft 41. The rotating piece 5 is coupled to the energy storage shaft 41 and can be driven by the energy storage shaft 41, so that the rotating piece 5 can rotate synchronously with the energy storage assembly 4. The pair of locking pieces 6 are each rotatably arranged on the support 1 and can each be driven by the rotating piece 5 to switch between the unlocked position and the locked position. In this way, each of the pair of locking pieces 6 can prevent the corresponding cooperating piece 2 from rotating to lock the at least one movable contact assembly 3 when in the locked position.
[0040] According to embodiments of the present disclosure, each of the pair of locking pieces 6 can be driven by the rotating piece 5 and can prevent the corresponding cooperating piece 2 from rotating when in the locked position, and since the at least one movable contact assembly 3 is coupled to the at least one cooperating piece 2, the at least one movable contact assembly 3 can be locked in the closed position. In this way, the at least one movable contact assembly 3 is prevented from bouncing in the opposite direction during the fast closing, thereby effectively preventing the arc. In addition, the double power transfer switch 100 of embodiments of the present disclosure can achieve the unlocking of the locking piece 6 by the movement of the mechanism itself, which is compact in structure and is conducive to reducing material costs.
[0041] In some embodiments, as shown in Figure 1 The double power transfer switch 100 can include a pair of cooperating pieces 2 and a pair of movable contact assemblies 3. Referring to Figure 1 and Figure 2, each of the pair of movable contact assemblies 3 is coupled to a corresponding one of the pair of mating pieces 2 and can be driven by the corresponding one of the pair of mating pieces 2 to switch between a closed position and an open position. It can be understood that the closed position is a position in which the corresponding one of the pair of movable contact assemblies 3 and the corresponding one of the pair of stationary contact assemblies are conductive, and the open position is a position in which the corresponding one of the pair of movable contact assemblies 3 and the corresponding one of the pair of stationary contact assemblies are non-conductive.
[0042] Each of the pair of movable contact assemblies 3 according to embodiments of the present disclosure can be coupled to the corresponding one of the pair of mating pieces 2 in any manner such that each of the pair of movable contact assemblies 3 can be rotated synchronously with the corresponding one of the pair of mating pieces 2. As shown in Figure 1 and Figure 2 In some embodiments, the pair of movable contact assemblies 3 can each include a connecting shaft 31 that can be connected to the corresponding one of the pair of mating pieces 2. It should be understood that in other embodiments, the pair of movable contact assemblies 3 and the corresponding one of the pair of mating pieces 2 can also be assembled in any other suitable manner, and embodiments of the present disclosure are not limited in this regard.
[0043] With continued reference to Figure 1 In some embodiments, each of the pair of locking pieces 6, when in the locked position, can prevent the corresponding one of the pair of mating pieces 2 from rotating to lock the corresponding one of the pair of movable contact assemblies 3 in the closed position. In this way, the reverse bouncing of each of the pair of movable contact assemblies 3 during the fast closing can be avoided, thereby effectively preventing the arc.
[0044] Figure 3 A structure diagram of the locking piece 6 is shown in Figure 1 As shown in Figure 1 and Figure 3 In some embodiments, the pair of locking pieces 6 can each include a rotating portion 61 that faces away from the rotating piece 5. Correspondingly, the bracket 1 can include a pair of rotating shafts 11. The rotating portion 61 of each of the pair of locking pieces 6 can be coupled to a corresponding one of the pair of rotating shafts 11. In this way, each of the pair of locking pieces 6 is rotatably arranged on the bracket 1.
[0045] With reference to Figure 1 and Figure 3 Further, each of the pair of locking pieces 6 can also include a limiting portion 62 connected to the rotating portion 61. The limiting portion 62 can be arranged adjacent to the rotating piece 5, and the limiting portion 62 can be driven by the rotating piece 5. In this way, each of the pair of locking pieces 6 can be driven by the rotating piece 5 to switch between the unlocked position and the locked position.
[0046] With continued reference to Figure 1In some embodiments, the rotating member 5 can include a first portion 51 and a second portion 52. The first portion 51 can be disposed around the energy storage shaft 41, and the second portion 52 can be disposed at the periphery of the first portion 51 and capable of driving the limiting portion 62. In this way, the rotating member 5 can drive the corresponding locking member 6 to switch from the locked position to the unlocked position through the second portion 52 during rotation.
[0047] With continued reference to Figure 3 In some embodiments, the limiting portion 62 can include a limiting surface 621. Correspondingly, each of the pair of cooperating members 2 can include a protruding portion 21. In the case where the corresponding locking member 6 in the pair of locking members 6 is in the locked position, the protruding portion 21 of the corresponding cooperating member 2 in the pair of cooperating members 2 can abut against the limiting surface 621 of the corresponding locking member 6 to prevent rotation of the corresponding cooperating member 2. It can be understood that since the moving contact assembly 3 is coupled to the corresponding cooperating member 2, the corresponding moving contact assembly 3 can be locked in the closed position. In this way, the corresponding moving contact assembly 3 can be prevented from bouncing in the opposite direction during fast closing, thereby effectively preventing arcing.
[0048] With continued reference to Figure 1 In some embodiments, one end of the elastic member 7 can be coupled to the limiting portion 62 of one of the pair of locking members 6, and the other end of the elastic member 7 can be coupled to the limiting portion 62 of the other of the pair of locking members 6. That is, the elastic member 7 is disposed between the limiting portions 62 of the pair of locking members 6 and is always in a pressed state. The elastic member 7 is used to drive the corresponding locking member 6 to rotate, so that the corresponding locking member 6 is reset from the unlocked position to the locked position. The working principle of the elastic member 7 will be described below in connection with Figures 4 to 8 .
[0049] The elastic member 7 according to embodiments of the present disclosure can be various types of elastic members 7 currently known or available in the future, and embodiments of the present disclosure do not limit this. For example, in some embodiments, the elastic member 7 can be a spring.
[0050] Figures 4 to 8 A working state schematic diagram of the dual power transfer switch 100 according to some embodiments of the present disclosure is shown.
[0051] As Figure 4As shown, the left-side mating member 2 (which can be referred to as the first mating member for easy distinction) and the left-side moving contact assembly 3 (which can be referred to as the first moving contact assembly for easy distinction) are in the open position. Correspondingly, the right-side mating member 2 (which can be referred to as the second mating member for easy distinction) and the right-side moving contact assembly 3 (which can be referred to as the second moving contact assembly for easy distinction) are in the closed position. The left-side locking member 6 (which can be referred to as the first locking member for easy distinction) is pressed by the rotating member 5 and is in the unlocked position. The right-side locking member 6 (which can be referred to as the second locking member for easy distinction) is not pressed by the rotating member 5 and is in the locked position to lock the second mating member and the second moving contact assembly in the closed position. At this time, the elastic member 7 is in the pressed state.
[0052] It should be noted that when the first moving contact assembly is in the open position and the second moving contact assembly is in the closed position, the dual power supply changeover switch 100 is in a state of connecting the second power supply and disconnecting the first power supply. Conversely, when the first moving contact assembly is in the closed position and the second moving contact assembly is in the open position, the dual power supply changeover switch 100 is in a state of connecting the first power supply and disconnecting the second power supply.
[0053] like Figure 4 and Figure 5 As shown, the energy storage shaft 41 of the energy storage component 4 rotates clockwise and drives the main spring assembly to store energy. Simultaneously, the energy storage shaft 41 drives the rotating member 5 to rotate clockwise. The rotating member 5 presses the limiting part 62 of the second locking member, causing the second locking member to rotate counterclockwise around the rotating shaft 11 to switch from the locked position to the unlocked position, thus unlocking the second mating member. Because the second locking member rotates counterclockwise and presses the elastic member 7, the elastic member 7 stores energy and applies a force F1 to the first locking member, driving it to rotate counterclockwise towards the locked position. During this counterclockwise rotation, the first locking member rotates to a position abutting against the protrusion 21 of the first mating member. In other words, the first locking member has not reached the locked position. At this time, the dual power switch 100 maintains a steady state, releasing energy from the main spring assembly to prepare for driving the first moving contact assembly to close and the second moving contact assembly to open.
[0054] like Figure 5 and Figure 6 As shown, the main spring assembly coupled to the second mating member releases energy and drives the second mating member to rotate counterclockwise, and the second mating member can drive the second moving contact assembly to switch from the closed position to the open position. The two sets of main spring assemblies release energy sequentially. After the second moving contact assembly switches to the open position, the main spring assembly coupled to the first mating member begins to release energy and drives the first mating member to rotate counterclockwise, so that the first moving contact assembly switches from the open position to the closed position. At this time, the limiting part 62 of the first locking member still abuts against the protrusion 21 of the first mating member.
[0055] As shown in Figure 6 and Figure 7 , the main spring assembly coupled to the first cooperating member continues to release energy and drive the first cooperating member to continue to rotate counterclockwise. When the first moving contact assembly is adjacent to the closed position, the protruding portion 21 of the first cooperating member rotates to a position where it is separated from the limiting portion 62 of the first locking member. As can be seen, the protruding portion 21 of the first cooperating member no longer restricts the limiting portion 62 of the first locking member.
[0056] As shown in Figure 7 and Figure 8 , the first locking member quickly rotates counterclockwise under the action of the force F1 and rotates to a position where the limiting surface 621 of the first locking member abuts against the protruding portion 21 of the first cooperating member, i.e., a locked position. Thus, the first locking member is switched to the locked position and can prevent the first cooperating member from rotating, thereby locking the first moving contact assembly. In this way, the first moving contact assembly can be prevented from bouncing in the opposite direction after impacting the corresponding static contact assembly, thereby avoiding adverse consequences such as arc drawing.
[0057] In addition, in order to prevent the protruding portion 21 of the first cooperating member from pushing open the first locking member due to a large force F2 acting on the first locking member during the reverse bouncing process, as shown in Figure 8 , the force F2 can generate a moment that causes the first locking member to continue to rotate counterclockwise toward the first cooperating member. Thus, in the case where the protruding portion 21 of the first cooperating member exerts a force F2 on the first locking member, the first locking member can continue to rotate counterclockwise under the influence of the force F2, thereby preventing the force F2 from being too large to push open the first locking member.
[0058] It should be noted that only the working process of switching the first moving contact assembly from the open position to the closed position and switching the second moving contact assembly from the closed position to the open position is described above. Accordingly, the working process of switching the first moving contact assembly from the closed position to the open position and switching the second moving contact assembly from the open position to the closed position is similar to the above working process, and the embodiments of the present disclosure will not be described again.
[0059] Figure 9 A partial structural schematic diagram of a double power transfer switch 100 according to some other embodiments of the present disclosure is shown. Figure 9 The double power transfer switch 100 shown is similar in structure to the double power transfer switch 100 shown in Figure 1 , and the main difference is that, Figure 9 The double power transfer switch 100 in includes a single cooperating member 2 and a single moving contact assembly 3. In the following, the differences between the two will be mainly described, and for the same parts, no further description will be given.
[0060] As shown in Figure 9As shown, in some embodiments, the single moving contact assembly 3 can be coupled to the single mating piece 2 and can be driven by the single mating piece 2 to switch between the first closed position and the second closed position. It can be appreciated that the stationary contact assemblies are arranged in pairs, and in the case that the moving contact assembly 3 is in the first closed position, the moving contact assembly 3 is in conduction with one of the stationary contact assemblies. In the case that the moving contact assembly 3 is in the second closed position, the moving contact assembly 3 is in conduction with the other stationary contact assembly. In addition, in the case that the moving contact assembly 3 is in any position between the first closed position and the second closed position, the moving contact assembly 3 is in disconnection with the pair of stationary contact assemblies.
[0061] It should be noted that in the case that the single moving contact assembly is in the first closed position, the double power transfer switch 100 is in a state of connecting the first power source and disconnecting the second power source. Conversely, in the case that the single moving contact assembly is in the second closed position, the double power transfer switch 100 is in a state of connecting the second power source and disconnecting the first power source.
[0062] Referring to Figure 9 In some embodiments, one of the pair of locking pieces 6, when in the locked position, can block the rotation of the single mating piece 2 to lock the single moving contact assembly 3 in the first closed position. The other of the pair of locking pieces 6, when in the locked position, can block the rotation of the single mating piece 2 in the opposite direction to lock the single moving contact assembly 3 in the second closed position.
[0063] Referring to Figure 9 In some embodiments, the limiting portion 62 can include a limiting surface 621, and the mating piece 2 can include a protruding portion 21. In the case that the single moving contact assembly 6 is in the first closed position or the second closed position, the protruding portion 21 is adapted to abut against the limiting surface 621 of the corresponding locking piece 6 of the pair of locking pieces 6. It can be appreciated that since the moving contact assembly 3 is coupled to the mating piece 2, the moving contact assembly 3 can be locked in the first closed position or the second closed position. In this way, the moving contact assembly 3 is prevented from bouncing in the opposite direction during the process of fast closing, thereby effectively preventing the arc.
[0064] Continuing to refer to Figure 9 In some embodiments, the elastic piece 7 can be arranged in pairs. The pair of elastic pieces 7 can each be coupled to the corresponding locking piece 6 of the pair of locking pieces 6 and the bracket 1. That is, one of the pair of elastic pieces 7 is coupled to one of the pair of locking pieces 6 and the bracket 1, and the other of the pair of elastic pieces 7 is coupled to the other of the pair of locking pieces 6 and the bracket 1. The working principle of the elastic piece 7 will be described below in conjunction with Figures 9 to 12 the description of the working principle of the double power transfer switch 100.
[0065] As Figure 9As shown, the mating part 2 and the moving contact assembly 3 are in the first closed position. The energy storage shaft 41 of the energy storage assembly 4 rotates clockwise and can drive the main spring assembly to store energy. At the same time, the energy storage shaft 41 can drive the rotating part 5 to rotate clockwise. The rotating part 5 can press the limiting part 62 of the upper locking part 6 (for ease of distinction, it can be called the first locking part), and the upper elastic part 7 (for ease of distinction, it can be called the first elastic part) is pressed and stores energy. Because it is pressed by the rotating part 5, the first locking part can rotate counterclockwise around the rotating shaft 11 to switch from the locked position to the unlocked position. At the same time, because the lower locking part 6 (for ease of distinction, it can be called the second locking part) is released by the rotating part 5, and the lower elastic part 7 (for ease of distinction, it can be called the second elastic part) is in a pressed state, the second locking part can switch from the unlocked position to the locked position under the action of the second elastic part. During the switching process of the second locking member, the limiting part 62 of the second locking member abuts against the protrusion 21 of the mating member 2, and the second elastic member can apply a force F1 to the second locking member. At this time, the dual power switch 100 maintains a steady state, preparing to release energy from the main spring assembly and drive the moving contact assembly 3 to switch to the second closing position.
[0066] like Figure 9 and Figure 10 As shown, the main spring assembly releases energy and drives the mating member 2 and the moving contact assembly 3 to switch to the second closed position. Since the first locking member is in the unlocked position, it does not obstruct the rotation of the mating member 2. During the counterclockwise rotation, the mating member 2 still abuts against the limiting part 62 of the second locking member, thus limiting the second locking member and preventing it from rotating.
[0067] like Figure 10 and Figure 11 As shown, the main spring assembly continues to release energy and drive the mating member 2 to continue rotating counterclockwise. When the moving contact assembly 3 is near the second closed position, the protrusion 21 of the mating member 2 rotates to a position where it separates from the limiting part 62 of the second locking member, and the protrusion 21 of the mating member 2 no longer constrains the limiting part 62 of the second locking member.
[0068] like Figure 11 and Figure 12 As shown, under the action of force F1, the second locking member rotates rapidly counterclockwise until its limiting surface 621 abuts against the protrusion 21 of the mating member 2, which is the locked position. Thus, the second locking member is in the locked position and can prevent the mating member 2 from rotating in the opposite direction, thereby locking the moving contact assembly 3. In this way, the moving contact assembly 3 can be prevented from bouncing in the opposite direction after impacting the corresponding stationary contact assembly, thereby avoiding adverse consequences such as arcing.
[0069] Furthermore, to prevent the protrusion 21 of the mating part 2 from exerting a large force F2 on the second locking part during the reverse bounce process, thus opening the second locking part, such asFigure 12 As shown, the force F2 can generate a moment of force that causes the second locking piece to continue to rotate counterclockwise towards the fitting piece 2. Thus, in the case that the protruding portion 21 of the fitting piece 2 exerts the force F2 on the second locking piece, the second locking piece can continue to rotate counterclockwise, thereby preventing the force F2 from being too large to push open the second locking piece.
[0070] It should be noted that only the working process of switching the movable contact assembly 3 from the first closed position to the second closed position is described above. Accordingly, the working process of switching the movable contact assembly 3 from the second closed position to the first closed position is similar, and the embodiments of the present disclosure do not make redundant descriptions here.
[0071] The anti-rebound design according to the embodiments of the present disclosure can be applied to various double power transfer switches to at least partially solve the above problems. It should be understood that the anti-rebound design according to the embodiments of the present disclosure can also be applied to other electrical components, and the embodiments of the present disclosure do not limit this.
[0072] The above has described various embodiments of the present disclosure, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical application, or technical improvement in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.
Claims
1. A dual power transfer switch (100), characterized in that, The dual power transfer switch (100) comprises: a support (1); at least one cooperating piece (2) rotatably arranged on the support (1); at least one movable contact assembly (3) coupled to the at least one cooperating piece (2) and adapted to be driven by the at least one cooperating piece (2); an energy storage assembly (4) rotatably arranged on the support (1) and comprising an energy storage shaft (41); a rotating piece (5) coupled to the energy storage shaft (41) and adapted to be driven by the energy storage shaft (41); and a pair of locking pieces (6) each rotatably arranged on the support (1) and each adapted to be driven by the rotating piece (5) to switch between an unlocked position and a locked position, each of the pair of locking pieces (6) adapted to prevent rotation of a corresponding cooperating piece (2) to lock the at least one movable contact assembly (3) when in the locked position.
2. The dual power transfer switch (100) of claim 1, characterized in that The pair of locking pieces (6) each comprises a rotating portion (61) facing away from the rotating piece (5), the support (1) comprises a pair of rotating shafts (11), and the rotating portion (61) of each of the pair of locking pieces (6) is coupled to a corresponding rotating shaft (11) of the pair of rotating shafts (11).
3. The dual power transfer switch (100) of claim 2, characterized in that The pair of locking pieces (6) each further comprises a limiting portion (62) connected to the rotating portion (61), and the limiting portion (62) is adapted to be driven by the rotating piece (5).
4. The dual power transfer switch (100) of claim 3, characterized in that The rotating piece (5) comprises a first portion (51) arranged around the energy storage shaft (41) and a second portion (52) arranged peripherally to the first portion (51), and the second portion (52) is adapted to drive the limiting portion (62).
5. The dual power transfer switch (100) of claim 3, wherein, The at least one cooperating piece (2) comprises a pair of cooperating pieces (2), the at least one movable contact assembly (3) comprises a pair of movable contact assemblies (3), each of the pair of movable contact assemblies (3) is coupled to and adapted to be driven by a corresponding cooperating piece (2) of the pair of cooperating pieces (2) to switch between a closed position and an open position, and each of the pair of locking pieces (6) is adapted to prevent rotation of a corresponding cooperating piece (2) to lock a corresponding movable contact assembly (3) of the pair of movable contact assemblies (3) in the closed position when in the locked position.
6. The dual power transfer switch (100) of claim 5, characterized in that The limiting portion (62) comprises a limiting face (621), each of the pair of cooperating pieces (2) comprises a protruding portion (21), and the protruding portion (21) of a corresponding cooperating piece (2) of the pair of cooperating pieces (2) is adapted to abut against the limiting face (621) of a corresponding locking piece (6) of the pair of locking pieces (6).
7. The dual power transfer switch (100) of claim 5, wherein, The dual power transfer switch (100) further comprises a resilient piece (7) having one end coupled to the limiting portion (62) of one locking piece (6) of the pair of locking pieces (6) and the other end coupled to the limiting portion (62) of the other locking piece (6) of the pair of locking pieces (6).
8. The dual power transfer switch (100) of claim 3, wherein, The at least one mating piece (2) comprises a single mating piece (2), and the at least one movable contact assembly (3) comprises a single movable contact assembly (3) coupled to the single mating piece (2) and adapted to be driven by the single mating piece (2) to switch between the first closed position and the second closed position.
9. The dual power transfer switch (100) of claim 8, characterized in that One of the pair of locking pieces (6) is adapted to prevent rotation of the single mating piece (2) to lock the single movable contact assembly (3) in the first closed position when in the locking position, and the other of the pair of locking pieces (6) is adapted to prevent reverse rotation of the single mating piece (2) to lock the single movable contact assembly (3) in the second closed position when in the locking position.
10. The dual power transfer switch (100) of claim 8, wherein, The limiting portion (62) comprises a limiting surface (621), and the mating piece (2) comprises a protruding portion (21) adapted to abut against the limiting surface (621) of the corresponding locking piece (6) of the pair of locking pieces (6) when the single movable contact assembly (3) is in the first closed position or the second closed position.
11. The dual power transfer switch (100) of claim 8, wherein, The dual power transfer switch (100) further comprises a pair of elastic pieces (7), and each of the pair of elastic pieces (7) is coupled to the corresponding locking piece (6) of the pair of locking pieces (6) and the support (1).