Dual power transfer switch

Abstract

Embodiments of the present disclosure provide a dual power transfer switch. The dual power transfer switch includes a bracket, a pair of opening and closing mechanisms, a pair of energy storage gears, a driving gear, and a blocking assembly. The pair of opening and closing mechanisms are rotatably coupled to the bracket and each includes a pair of energy storage shafts. The pair of energy storage gears are rotatably coupled to the bracket and each is adapted to drive a corresponding opening and closing mechanism to rotate by the pair of energy storage shafts of the corresponding opening and closing mechanism. The driving gear is rotatably coupled to the bracket, the driving gear is engaged with the pair of energy storage gears and is adapted to rotate under the driving of a power component, and the driving gear includes a driving portion. The blocking assembly is rotatably coupled to the bracket and is adapted to switch between a first blocking position, a first dead point position, and a second blocking position. In a case where the blocking assembly is in the first blocking position or the second blocking position, the blocking assembly is in a rotation path of one of the pair of energy storage shafts of at least one opening and closing mechanism and the driving portion.

Description

Technical Field

[0001] The embodiments of this disclosure generally relate to the field of electrical equipment technology, and more specifically, to dual power transfer switches. Background Technology

[0002] Dual power transfer switches are an important type of electrical switch, widely used in hospitals, airports, fire stations, and other situations where power outages are not permitted.

[0003] In a dual-power transfer switch, the paired opening and closing mechanisms can move and drive corresponding actuators. Each actuator can drive a corresponding moving contact assembly via its output shaft, switching the moving contact assembly between a closed and an open state, thereby connecting the dual-power transfer switch to either the main power supply or the backup power supply. Utility Model Content

[0004] In one aspect of this disclosure, a dual-power transfer switch is provided, comprising a bracket; a pair of opening and closing mechanisms rotatably coupled to the bracket and each including a pair of energy storage shafts; a pair of energy storage gears rotatably coupled to the bracket and each adapted to drive a corresponding opening and closing mechanism to rotate via the pair of energy storage shafts of the corresponding opening and closing mechanism; a drive gear rotatably coupled to the bracket, the drive gear meshing with the pair of energy storage gears and adapted to rotate under the drive of a power component, and the drive gear including a drive portion; and a blocking assembly rotatably coupled to the bracket and adapted to switch between a first blocking position, a first dead position, and a second blocking position, wherein the first dead position is between the first blocking position and the second blocking position, wherein when the blocking assembly is in the first blocking position or the second blocking position, the blocking assembly is on the rotation path of one of the pair of energy storage shafts of at least one opening and closing mechanism and the drive portion.

[0005] According to embodiments of this disclosure, when the drive gear is driven by the power component, the drive gear drives the pair of energy storage gears to rotate, and drives the blocking assembly to rotate via the drive unit. In this way, the blocking assembly is driven by a dimensional chain composed of the power component and the drive gear, and the dimensional chain is shortened to ensure that the blocking assembly is smoothly switched to the first dead position. In addition, one of the pair of energy storage shafts of at least one of the opening and closing mechanisms is adapted to rotate to a position abutting against the blocking assembly, so that the blocking assembly is adapted to absorb most of the energy released by the main spring, thereby avoiding damage to the trip lever.

[0006] In some embodiments, the drive gear further includes a driving tooth and a driven tooth, the driving tooth being adapted to be driven by the power component, the driven tooth and the drive portion being disposed on one side of the drive gear adjacent to the support, and the driven tooth meshing with the paired energy storage gears.

[0007] In some embodiments, the dual power transfer switch further includes a first rotating shaft passing through the bracket and a pair of second rotating shafts, the driving gear, the driven gear and the blocking assembly being arranged around the first rotating shaft, the pair of opening and closing mechanisms being arranged around one end of the respective second rotating shaft, and the pair of energy storage gears being arranged around the other end of the respective second rotating shaft.

[0008] In some embodiments, the blocking assembly includes a rotating member and a pair of stop members. The rotating member is disposed around the first rotating shaft, and the pair of stop members are disposed on opposite sides of the rotating member along the radial direction of the first rotating shaft. When the blocking assembly is in the first blocking position or the second blocking position, each of the pair of stop members is located on the rotation path of one of the pair of energy storage shafts of the corresponding opening and closing mechanism. When the blocking assembly is near the first dead point position, one of the pair of stop members is located on the rotation path of one of the pair of energy storage shafts of the corresponding opening and closing mechanism.

[0009] In some embodiments, each of the paired stop members includes a first abutment portion and a second abutment portion. When the blocking assembly is in the first blocking position or the second blocking position, the first abutment portion of one of the paired stop members is on the rotation path of one of the paired energy storage shafts of the corresponding opening and closing mechanism, and the second abutment portion of the other stop member is on the rotation path of one of the paired energy storage shafts of the corresponding opening and closing mechanism.

[0010] In some embodiments, the blocking assembly further includes a protrusion disposed on the side of the rotating member adjacent to the drive gear and located on the rotation path of the drive unit.

[0011] In some embodiments, the first rotating shaft and the paired second rotating shafts extend along the same extending direction, wherein along the extending direction, the rotating member, the paired energy storage gears and the driving gear are arranged sequentially, and the rotating member is closer to the bracket than the paired energy storage gears and the driving gears.

[0012] In some embodiments, the drive portion is arc-shaped and arranged along the circumferential direction of the first rotating shaft, the drive portion includes a pair of abutment surfaces spaced apart from each other along the circumferential direction, and the protrusion is located on the rotation path of the pair of abutment surfaces.

[0013] In some embodiments, the blocking assembly further includes an extension disposed on the rotating member, and the dual power transfer switch further includes an elastic member, one end of which is connected to the bracket, and the other end of which is connected to the end of the extension opposite to the rotating member.

[0014] In some embodiments, when the blocking component is in the first blocking position or the second blocking position, the opposite sides of the paired stop members, which are facing away from each other, abut against the corresponding second pivot.

[0015] It should be understood that the description in this section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0016] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0017] Figure 1 A partial structural schematic diagram of a dual power transfer switch according to some embodiments of the present disclosure is shown;

[0018] Figure 2 It shows Figure 1 An exploded view of the dual power supply transfer switch shown.

[0019] Figure 3 A schematic diagram of the structure of a drive gear according to some embodiments of the present disclosure is shown;

[0020] Figure 4 A partial structural schematic diagram of a dual power transfer switch according to some embodiments of the present disclosure is shown;

[0021] Figures 5 to 8 A schematic operation of a dual power transfer switch according to some embodiments of the present disclosure is shown.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100 is a dual power supply transfer switch;

[0024] 1 is a support;

[0025] 2 is the opening and closing mechanism, 21 is the energy storage shaft, and 22 is the main spring;

[0026] 3 represents the energy storage gear;

[0027] 4 is the drive gear, 41 is the driving gear, 411 is the receiving groove, 42 is the driven gear, 43 is the driving part, and 431 is the contact surface;

[0028] 5 is a blocking component, 51 is a rotating component, 52 is a stopping component, 521 is a first abutting part, 522 is a second abutting part, 523 is a dividing groove, 53 is a protrusion, and 54 is an extension component.

[0029] 61 is the first pivot, and 62 is the second pivot;

[0030] 7 is an elastic element;

[0031] 81 is an electromagnet, 82 is a trip lever, and 83 is a driving component. Detailed Implementation

[0032] Embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present 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 its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0034] The paired opening and closing mechanism can move and drive the corresponding drive components. After the main spring in the paired opening and closing mechanism passes its dead center, it releases energy and drives the corresponding drive component to rotate to the position where it engages with the trip lever. The trip lever will break due to the impact of the drive component. Therefore, before the drive component impacts the trip lever, a blocking component needs to be installed to absorb some of the energy released by the main spring, thereby preventing damage to the trip lever. In addition, after the blocking component is impacted, the energy storage gear of the opening and closing mechanism needs to drive and push the blocking component away to avoid affecting the opening and closing operations of the dual power transfer switch.

[0035] However, in conventional dual-power transfer switches, the blocking element is driven by a chain of components consisting of a drive motor, a first drive gear, a gear shaft, a second drive gear, and an energy storage gear. This chain is relatively long, making it difficult to control the angle of motion transmission. When the drive motor signal is prematurely cut off, the rotation angle of the drive gear driven by the motor is insufficient, preventing the blocking element from reaching its dead position and thus affecting its blocking effect in subsequent cycles. Embodiments of this disclosure provide a dual-power transfer switch to at least partially solve the above problems. In the following sections, [further details will be provided]. Figures 1 to 8 The principles of this disclosure are described.

[0036] Figure 1 A partial structural schematic diagram of a dual power transfer switch 100 according to some embodiments of the present disclosure is shown. Figure 2 It shows Figure 1 The exploded view of the dual power supply transfer switch 100 shown. Figure 3 A schematic diagram of the structure of a drive gear 4 according to some embodiments of the present disclosure is shown. Figure 4 A partial structural schematic diagram of a dual power supply transfer switch 100 according to some embodiments of the present disclosure is shown. For example... Figures 1 to 4 As shown, the dual-power transfer switch 100 described herein includes a bracket 1, a paired opening and closing mechanism 2, a paired energy storage gear 3, a drive gear 4, a blocking assembly 5, and a paired drive element 83. The paired opening and closing mechanism 2 is rotatably coupled to the bracket 1. The paired energy storage gear 3 is rotatably coupled to the bracket 1. The drive gear 4 is rotatably coupled to the bracket 1. The blocking assembly 5 is rotatably coupled to the bracket 1. The paired drive element 83 is rotatably coupled to the bracket 1.

[0037] refer to Figure 1 and Figure 4 In some embodiments, the paired opening and closing mechanisms 2 are each adapted to be driven by a corresponding energy storage gear 3. Specifically, each paired opening and closing mechanism 2 includes a pair of energy storage shafts 21 and a pair of main springs 22. The paired energy storage gears 3 are provided with openings, and each energy storage shaft 21 is disposed within an opening. Thus, when the paired energy storage gears 3 are driven, each energy storage gear 3 drives the corresponding opening and closing mechanism 2 to rotate via the paired energy storage shafts 21 of the corresponding opening and closing mechanism 2. Each pair of energy storage shafts 21 is coupled to a corresponding main spring 22, so that when the energy storage shaft 21 is driven, it can press the main spring 22 and cause the main spring 22 to store energy.

[0038] Each closing / opening mechanism 2 is adapted to rotate between a closed position, a dead position, and an open position. To distinguish it from the dead position of the blocking assembly 5 described below, the dead position of each closing / opening mechanism 2 may be referred to herein as the second dead position, while the dead position of the blocking assembly 5 may be referred to herein as the first dead position. The second dead position lies between the closed and open positions. Figure 4 The circuit breaker mechanism 2 shown has passed the second dead point position by a certain distance. The second dead point position can be understood as the position where the paired main springs 22 of the circuit breaker mechanism 2 are essentially connected in a straight line. (Reference) Figure 4 Before the opening and closing mechanism 2 rotates to the second dead point position, the paired energy storage gears 3 drive the corresponding opening and closing mechanism 2 to rotate through the paired energy storage shafts 21, and press the main spring 22. After the opening and closing mechanism 2 rotates past the second dead point position, the main spring 22 is in an unstable state. The main spring 22 releases energy and makes the opening and closing mechanism 2 continue to rotate without the need for the energy storage gears 3 to drive it.

[0039] Continue to refer to Figure 4 Each pair of drive members 83 is coupled to a corresponding opening / closing mechanism 2 and is adapted to be driven by that mechanism. The drive member 83 is coupled to a moving contact assembly (not shown in the figure). Thus, when the opening / closing mechanism 2 switches between the closed and open positions, it drives the moving contact assembly to rotate via the drive member 83, thereby changing the position between the moving contact assembly and the stationary contact assembly (not shown in the figure). When the opening / closing mechanism 2 is in the closed position, the moving contact assembly is connected to the stationary contact assembly. When the opening / closing mechanism 2 is in the open position, the moving contact assembly is disconnected from the stationary contact assembly.

[0040] In some embodiments, the drive gear 4 is adapted to rotate under the drive of a power component (not shown). The power component may include a motor and a drive gear. The drive gear meshes with the drive gear 4. (Reference) Figures 1 to 3 When the motor drives the power gear to rotate, the drive gear 4 rotates following the power gear. The drive gear 4 simultaneously meshes with the paired energy storage gears 3, thus the paired energy storage gears 3 are adapted to rotate with the drive gear 4, and the paired energy storage gears 3 drive the paired opening and closing mechanism 2 to rotate to the second dead center position. The drive gear 4 includes a drive section 43. The drive section 43 interacts with the blocking assembly 5 and is used to drive the blocking assembly 5 to rotate.

[0041] In some embodiments, the blocking component 5, when driven by the driving unit 43, is adapted to switch between a first blocking position, a first dead point position, and a second blocking position. The first dead point position is between the first blocking position and the second blocking position. Figure 4 The blocking component 5 shown is in either the first blocking position or the second blocking position. (Continue referring to...) Figure 4 When the blocking component 5 is in the first blocking position or the second blocking position, the blocking component 5 is on the rotation path of one of the paired energy storage shafts 21 of at least one opening and closing mechanism 2, and on the rotation path of the drive unit 43.

[0042] Continue to refer to Figure 4When the paired opening and closing mechanisms 2 pass the second dead point position and rotate towards the closing or opening position, one of the paired energy storage shafts 21 of the corresponding opening and closing mechanisms 2 rotates to a position abutting against the blocking assembly 5. At this time, the driving member 83 is not engaged with the corresponding tripping rod 82, that is, the driving member 83 is spaced apart from the corresponding tripping rod 82, so the blocking assembly 5 absorbs most of the energy of the main spring 22. After the blocking assembly 5 is impacted, the driving part 43 abuts against the blocking assembly 5.

[0043] Continue to refer to Figure 4 As the drive gear 4 continues to rotate, the drive unit 43 is adapted to drive the blocking assembly 5 to rotate towards the first dead center position, so that the blocking assembly 5 is misaligned with one of the paired energy storage shafts 21 of the corresponding opening and closing mechanism 2. Then, under the energy release action of the main spring 22, the opening and closing mechanism 2 continues to rotate towards the closing position or the opening position until the drive member 83 engages with the corresponding trip lever 82 and is blocked by the corresponding trip lever 82. It can be understood that since the blocking assembly 5 has absorbed most of the energy of the main spring 22, the impact force of the drive member 83 on the corresponding trip lever 82 is reduced, thereby avoiding damage to the trip lever 82. At this time, the opening and closing mechanism 2 is in the closing preparation position or the opening preparation position.

[0044] Continue to refer to Figure 4 The trip lever 82 is rotatably coupled to the bracket 1, and the electromagnet 81 is also coupled to the bracket 1. The trip lever 82 is connected to the push rod of the electromagnet 81 (not shown in the figure) and is adapted to rotate to a position offset from the drive member 83 under the push of the push rod. At this time, the drive member 83 is released from obstruction, and under the energy release action of the main spring 22, the opening and closing mechanism 2 continues to rotate to the closing position or the opening position.

[0045] The operation of the dual power transfer switch 100 will be explained in the following text. Figures 4 to 8 Detailed description.

[0046] According to embodiments of this disclosure, when the drive gear 4 is driven by the power component, the drive gear 4 drives the pair of energy storage gears 3 to rotate, and drives the blocking assembly 5 to rotate via the drive unit 43. In this way, the blocking assembly 5 is driven by a dimensional chain formed by the power component and the drive gear 4. The dimensional chain is shortened, making the transmission simple and reliable, and ensuring that the blocking assembly 5 is smoothly switched to the first dead position. In addition, one of the pair of energy storage shafts 21 is adapted to rotate to a position abutting against the blocking assembly 5, so the blocking assembly 5 is adapted to absorb most of the energy released by the main spring 22, thereby avoiding damage to the trip lever 82. Furthermore, the drive unit 43 is adapted to drive the blocking assembly 5 to rotate towards the first dead position to push the blocking assembly 5 away, avoiding affecting the opening and closing operations of the dual power supply transfer switch 100.

[0047] Return to reference Figure 3In some embodiments, the drive gear 4 may further include a driving gear 41 and a driven gear 42. The driving gear 41 may mesh with and be driven by the power gear of the power component. The driven gear 42 and the drive unit 43 may be disposed on one side of the drive gear 4 adjacent to the support 1. The driven gear 42 meshes with and is adapted to drive the pair of energy storage gears 3. In this way, the power component, the drive gear 4, and the pair of energy storage gears 3 form a drive chain.

[0048] Return to reference Figures 1 to 3 In some embodiments, the dual-power transfer switch 100 may further include a first rotating shaft 61 and a pair of second rotating shafts 62 passing through the bracket 1. The first rotating shaft 61 and the pair of second rotating shafts 62 are fixed to the bracket 1. The driving gear 41, the driven gear 42, and the blocking assembly 5 may be arranged around the first rotating shaft 61 and are adapted to rotate around the first rotating shaft 61. The paired opening and closing mechanisms 2 may each be arranged around one end of the corresponding second rotating shaft 62 and are adapted to rotate around the second rotating shaft 62. The paired energy storage gears 3 may each be arranged around the other end of the corresponding second rotating shaft 62 and are adapted to rotate around the second rotating shaft 62.

[0049] Continue to refer to Figure 2 and Figure 4 In some embodiments, the blocking assembly 5 may include a rotating member 51 and a pair of stop members 52. The rotating member 51 may be disposed about a first axis of rotation 61, and the first axis of rotation 61 passes through the middle of the rotating member 51. The pair of stop members 52 are disposed on opposite sides of the rotating member 51 along the radial direction of the first axis of rotation 61. That is, one of the stop members 52 is disposed on one side of the rotating member 51, and the other stop member 52 is disposed on the other side of the rotating member 51 along the radial direction. Continuing to refer to... Figure 4 When the blocking assembly 5 is in the first blocking position or the second blocking position, the paired stop members 52 are each on the rotation path of one of the paired energy storage shafts 21 of the corresponding opening and closing mechanism 2. In this way, one of the paired energy storage shafts 21 of the corresponding opening and closing mechanism 2 is adapted to rotate to a position abutting against the corresponding stop member 52, and the blocking assembly 5 is adapted to absorb most of the energy released by the main spring 22 through the stop member 52, thereby avoiding damage to the trip lever 82.

[0050] Continue to refer to Figure 2In some embodiments, each of the paired stop members 52 includes a first abutment portion 521 and a second abutment portion 522. The first abutment portion 521 and the second abutment portion 522 are located at one end of the stop member 52 facing away from the rotating member 51. For example, each of the paired stop members 52 has a dividing groove 523 at one end facing away from the rotating member 51, which divides one end of each stop member 52 into a first abutment portion 521 and a second abutment portion 522. The first abutment portion 521 or the second abutment portion 522 of each stop member 52 abuts against the corresponding energy storage shaft 21 to block the corresponding opening and closing mechanism 2.

[0051] Continue to refer to Figure 2 and Figure 4 In some embodiments, when the blocking assembly 5 is in the first blocking position or the second blocking position, the first abutting portion 521 of one of the paired stop members 52 is located on the rotational path of one of the paired energy storage shafts 21 of the corresponding opening and closing mechanism 2. The second abutting portion 522 of the other stop member 52 is located on the rotational path of one of the paired energy storage shafts 21 of the corresponding opening and closing mechanism 2. In this way, during the switching process of the paired opening and closing mechanism 2 from the second dead point position to the closed position or the open position, the first abutting portion 521 of one of the paired stop members 52 is adapted to block the rotation of the corresponding opening and closing mechanism 2. The second abutting portion 522 of the other stop member 52 is adapted to block the rotation of the corresponding opening and closing mechanism 2. Therefore, the blocking component 5 is suitable for blocking the rotation of the paired opening and closing mechanism 2 and the paired drive member 83, and is suitable for absorbing the energy released by the main spring 22, thereby avoiding the problem of the drive member 83 hitting the corresponding trip rod 82 and damaging the corresponding trip rod 82.

[0052] To facilitate the driving of the blocking component 5 by the drive gear 4, please refer to... Figure 2 In some embodiments, the blocking assembly 5 may further include a protrusion 53. The protrusion 53 may be disposed on the side of the rotating member 51 adjacent to the drive gear 4, that is, on the side of the rotating member 51 opposite to the bracket 1. Continuing to refer to... Figure 3 and Figure 4 The protrusion 53 is located on the rotation path of the drive unit 43. It can be understood that after each of the paired stop members 52 is struck by one of the paired energy storage shafts 21 of the corresponding opening and closing mechanism 2, the drive gear 4 drives the blocking assembly 5 to rotate toward the first dead center position via the protrusion 53. In this way, each of the paired stop members 52 rotates to a position offset from one of the paired energy storage shafts 21 of the corresponding opening and closing mechanism 2, at which point the blocking assembly 5 no longer blocks the paired opening and closing mechanism 2 and the paired drive members 83. It should be understood that in other embodiments, the blocking assembly 5 can also adopt any other suitable structure to cooperate with the drive gear 4 so as to be driven by the drive gear 4.

[0053] Return to reference Figure 1 and Figure 2 In some embodiments, the first rotating shaft 61 and the paired second rotating shafts 62 may extend along the same extending direction X, and the first rotating shaft 61 may be located between the paired second rotating shafts 62. Along the extending direction X, the rotating member 51, the paired energy storage gears 3, and the drive gear 4 are arranged sequentially. The paired energy storage gears 3 are distributed on both sides of the first rotating shaft 61. The rotating member 51 is closer to the support 1 than the paired energy storage gears 3 and the drive gear 4, and the paired energy storage gears 3 are closer to the support 1 than the drive gear 4. In this way, based on the drive gear 4 driving the blocking assembly 5 and the paired energy storage gears 3, the arrangement space can be reduced, thereby facilitating a reduction in the size of the dual power supply transfer switch 100.

[0054] To further reduce the layout space, refer to Figure 2 and Figure 3 In some embodiments, the driving tooth 41 may include a receiving groove 411 facing the support 1. One end of the driven tooth 42 may be disposed on the bottom of the receiving groove 411, and the other end of the driven tooth 42 may extend out of the receiving groove 411 to mesh with the paired energy storage gears 3. The drive unit 43 may be disposed within the receiving groove 411. The protrusion 53 may extend into the receiving groove 411 and be disposed on the rotation path of the drive unit 43 to ensure that the blocking assembly 5 is suitable for being driven by the drive gear 4. In this way, the arrangement space is further reduced, thereby facilitating a reduction in the size of the dual power supply changeover switch 100.

[0055] Continue to refer to Figure 2 and Figure 3 In some embodiments, the drive unit 43 may be arc-shaped and arranged along the circumferential direction of the first rotating shaft 61. The drive unit 43 includes a pair of abutment surfaces 431 spaced apart from each other along the circumferential direction. One of the abutment surfaces 431 is located at one end of the drive unit 43, and the other abutment surface 431 is located at the other end of the drive unit 43. The protrusion 53 may be located on the rotation path of the pair of abutment surfaces 431. In this way, after the pair of stop members 52 are each struck by one of the pair of energy storage shafts 21 of the corresponding opening and closing mechanism 2, the drive gear 4 drives the blocking assembly 5 to rotate toward the first dead point position via the corresponding abutment surface 431 of the pair of abutment surfaces 431.

[0056] Continue to refer to Figure 1 and Figure 2In some embodiments, the blocking assembly 5 further includes an extension 54 disposed on the rotating member 51. Correspondingly, the dual power transfer switch 100 may also include an elastic member 7. The elastic member 7 may include, for example, any elastic component such as a spring or a sheet. One end of the elastic member 7 is connected to the bracket 1, and the other end of the elastic member 7 is connected to the end of the extension 54 opposite to the rotating member 51. Continuing to refer to... Figure 4 When the drive gear 4 drives the blocking assembly 5 to rotate from one of the first blocking positions and the second blocking position through the first dead point position, the elastic element 7 is compressed and stores energy. At this time, the elastic element 7 releases energy and causes the blocking assembly 5 to continue rotating toward the other of the first and second blocking positions without the need for the drive gear 4 to drive it.

[0057] Figures 5 to 8 A schematic operation of a dual power supply transfer switch 100 according to some embodiments of the present disclosure is shown. (The following will be combined with...) Figures 4 to 8 Describe the working process of the dual power supply transfer switch 100.

[0058] For ease of description, Figures 4 to 8 The opening and closing mechanism 2 located on the left side is called the first opening and closing mechanism, and correspondingly, the opening and closing mechanism 2 located on the right side is called the second opening and closing mechanism. Furthermore, Figures 4 to 8 The stop member 52 located on the left is called the first stop member, and correspondingly, the stop member 52 located on the right is called the second stop member.

[0059] refer to Figure 4 and Figure 5 The blocking component 5 is in one of the first and second blocking positions. The paired opening and closing mechanism 2 has passed the second dead point position for a certain distance. At this time, continue to refer to... Figure 5 Each of the opposite sides of the paired stop members 52 abuts against a corresponding second rotating shaft 62. That is, the second abutting portion 522 of the first stop member abuts against the corresponding second rotating shaft 62, and the first abutting portion 521 of the second stop member abuts against the corresponding second rotating shaft 62, so that the blocking assembly 5 is held in a first blocking position or a second blocking position under the action of the elastic member 7. One of the paired energy storage shafts 21 of the first opening and closing mechanism rotates to abut against the first abutting portion 521 of the first stop member, and one of the paired energy storage shafts 21 of the second opening and closing mechanism rotates to abut against the second abutting portion 522 of the second stop member, so as to block the paired opening and closing mechanisms 2 by the blocking assembly 5. The drive member 83 is not engaged with the corresponding trip lever 82, that is, the drive member 83 is spaced apart from the corresponding trip lever 82, therefore the blocking assembly 5 is adapted to absorb most of the energy of the main spring 22, thereby avoiding damage to the trip lever 82.

[0060] Continue to refer to Figure 4 and Figure 6 After the blocking component 5 is impacted, the drive unit 43 abuts against the protrusion 53 of the blocking component 5. As the drive gear 4 continues to rotate, the drive unit 43 is adapted to drive the blocking component 5 to rotate to the first dead center position, and during this process, the blocking component 5 and one of the paired energy storage shafts 21 of the corresponding opening and closing mechanism 2 are misaligned. Since the corresponding opening and closing mechanism 2 is not blocked by the blocking component 5, the paired opening and closing mechanism 2 and the paired drive unit 83 continue to rotate under the energy release action of the main spring 22. The paired drive unit 83 each rotates to the position of engaging with the corresponding trip lever 82 and is blocked by the corresponding trip lever 82. At this time, the first opening and closing mechanism is in the opening preparation position, and the second opening and closing mechanism is in the closing preparation position.

[0061] Continue to refer to Figure 6 and Figure 7 When the drive gear 4 drives the blocking assembly 5 to rotate from one of the first blocking positions and the second blocking position through the first dead point position, the elastic member 7 is compressed and stores energy. At this time, the elastic member 7 releases energy and causes the drive gear 4 to continue rotating toward the other blocking position of the first and second blocking positions, and the energy-storing gear 3 does not need to continue driving. Then, the opposite sides of the paired stop members 52, which are facing away from each other, abut against the corresponding second rotating shaft 62. That is, the first abutting part 521 of the first stop member abuts against the corresponding second rotating shaft 62, and the second abutting part 522 of the second stop member abuts against the corresponding second rotating shaft 62, so that the blocking assembly 5 is held in the other blocking position of the first and second blocking positions by the action of the elastic member 7, thereby preparing for the next blocking.

[0062] When the first opening / closing mechanism is in the opening preparation position and the second opening / closing mechanism is in the closing preparation position, the paired electromagnets 81 are adapted to operate based on a closing signal or an opening signal, thereby each pushing the corresponding trip lever 82 to rotate to a position offset from the corresponding driving member 83 via a push rod. Under the energy release action of the corresponding main spring 22, the first opening / closing mechanism rotates to the opening position, and then the second opening / closing mechanism rotates to the closing position.

[0063] When the blocking component 5 still cannot reach the first dead point position or remains near the first dead point position, such as Figure 8As shown, the dual-power transfer switch 100 first opens and then closes to prevent the main power supply and backup power supply from being turned on simultaneously. The first opening / closing mechanism can open normally and reach the opening position. If the blocking component 5 cannot reach the first dead point position or is close to the first dead point position, one of the paired stop members 52 is on the rotation path of one of the paired energy storage shafts 21 of the corresponding opening / closing mechanism 2. That is, the second stop member is located on the rotation path of one of the paired energy storage shafts 21 of the opening / closing mechanism 2 (i.e., the second opening / closing mechanism) performing the closing operation. In this way, when the second opening / closing mechanism performs the closing operation, one of the paired energy storage shafts 21 of the second opening / closing mechanism is adapted to push the blocking component 5 past the first dead point position, thereby reaching the other blocking position between the first and second blocking positions.

[0064] The dual power transfer switch 100 according to the embodiments of this disclosure is designed with redundancy to ensure that the blocking component 5 can pass through the first dead point position smoothly, thereby preparing for the next blocking.

[0065] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A dual-power transfer switch (100), characterized in that, The dual power supply transfer switch (100) includes: Scaffold (1); A pair of opening and closing mechanisms (2) are rotatably coupled to the bracket (1) and each includes a pair of energy storage shafts (21); A pair of energy storage gears (3) are rotatably coupled to the bracket (1) and each is adapted to drive the corresponding opening and closing mechanism (2) to rotate via the pair of energy storage shafts (21) of the corresponding opening and closing mechanism (2); A drive gear (4), rotatably coupled to the bracket (1), meshing with the paired energy storage gears (3) and adapted to rotate under the drive of a power component, and the drive gear (4) includes a drive section (43); and A blocking assembly (5) is rotatably coupled to the bracket (1) and adapted to switch between a first blocking position, a first dead point position and a second blocking position, wherein the first dead point position is between the first blocking position and the second blocking position, wherein when the blocking assembly (5) is in the first blocking position or the second blocking position, the blocking assembly (5) is on the rotation path of one of the paired energy storage shafts (21) of at least one opening and closing mechanism (2) and the drive unit (43).

2. The dual power supply transfer switch (100) according to claim 1, characterized in that, The drive gear (4) further includes a driving tooth (41) and a driven tooth (42). The driving tooth (41) is adapted to be driven by the power component. The driven tooth (42) and the drive unit (43) are disposed on the side of the drive gear (4) adjacent to the bracket (1), and the driven tooth (42) meshes with the paired energy storage gears (3).

3. The dual power supply transfer switch (100) according to claim 2, characterized in that, The dual power transfer switch (100) also includes a first rotating shaft (61) passing through the bracket (1) and a pair of second rotating shafts (62). The driving gear (41), the driven gear (42) and the blocking assembly (5) are arranged around the first rotating shaft (61). The pair of opening and closing mechanisms (2) are each arranged around one end of the corresponding second rotating shaft (62), and the pair of energy storage gears (3) are each arranged around the other end of the corresponding second rotating shaft (62).

4. The dual power supply transfer switch (100) according to claim 3, characterized in that, The blocking assembly (5) includes a rotating member (51) and a pair of stop members (52). The rotating member (51) is arranged around the first rotating shaft (61), and the pair of stop members (52) are arranged on opposite sides of the rotating member (51) along the radial direction of the first rotating shaft (61). When the blocking assembly (5) is in the first blocking position or the second blocking position, each of the paired stop members (52) is on the rotation path of one of the paired energy storage shafts (21) of the corresponding opening and closing mechanism (2). When the blocking assembly (5) is near the first dead point position, one of the paired stop members (52) is on the rotation path of one of the paired energy storage shafts (21) of the corresponding opening and closing mechanism (2).

5. The dual power supply transfer switch (100) according to claim 4, characterized in that, Each of the paired stop members (52) includes a first abutting portion (521) and a second abutting portion (522). When the blocking assembly (5) is in the first blocking position or the second blocking position, the first abutting portion (521) of one of the stop members (52) is on the rotation path of one of the paired energy storage shafts (21) of the corresponding opening and closing mechanism (2), and the second abutting portion (522) of the other stop member (52) is on the rotation path of one of the paired energy storage shafts (21) of the corresponding opening and closing mechanism (2).

6. The dual power supply transfer switch (100) according to claim 4, characterized in that, The blocking assembly (5) further includes a protrusion (53) which is disposed on the side of the rotating member (51) adjacent to the drive gear (4) and is located on the rotation path of the drive unit (43).

7. The dual power supply transfer switch (100) according to claim 6, characterized in that, The first rotating shaft (61) and the paired second rotating shafts (62) extend along the same extension direction (X), wherein along the extension direction (X), the rotating member (51), the paired energy storage gears (3) and the driving gear (4) are arranged in sequence, and the rotating member (51) is closer to the bracket (1) than the paired energy storage gears (3) and the driving gear (4).

8. The dual power supply transfer switch (100) according to claim 7, characterized in that, The drive unit (43) is arc-shaped and arranged along the circumferential direction of the first rotating shaft (61). The drive unit (43) includes a pair of abutting surfaces (431) spaced apart from each other along the circumferential direction, and the protrusion (53) is located on the rotation path of the pair of abutting surfaces (431).

9. The dual power supply transfer switch (100) according to claim 4, characterized in that, The blocking assembly (5) further includes an extension (54) disposed on the rotating member (51), and the dual power supply changeover switch (100) further includes an elastic member (7), one end of the elastic member (7) is connected to the bracket (1), and the other end of the elastic member (7) is connected to the end of the extension member (54) opposite to the rotating member (51).

10. The dual power supply transfer switch (100) according to claim 9, characterized in that, When the blocking assembly (5) is in the first blocking position or the second blocking position, the opposite sides of the paired stop members (52) that are facing away from each other abut against the corresponding second rotating shaft (62).

Images