CN117198779A

CN117198779A - Driving system for dual-power transfer switch and dual-power transfer switch

Info

Publication number: CN117198779A
Application number: CN202210602283.1A
Authority: CN
Inventors: 潘艳明; 刘振忠; 周斌
Original assignee: Schneider Electric Industries SAS
Current assignee: Schneider Electric Industries SAS
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2023-12-08

Abstract

The invention relates to a drive system for a dual power transfer switch, said drive system comprising: a brake-off energy storage assembly configured to independently store energy under an external driving force; a transmission operably coupled to the split brake energy storage assembly; an output member operatively coupled to the transmission mechanism and the breaking unit of the dual power transfer switch such that when the opening energy storage assembly releases energy, the output member drives the breaking unit to perform opening operation via the transmission mechanism; and the switching-on energy storage assembly is operably connected to the output piece, so that when the output piece drives the breaking unit to conduct breaking operation, the switching-on energy storage assembly stores energy, and when the switching-on energy storage assembly releases energy, the output piece can drive the breaking unit to conduct switching-on operation, and when the switching-off energy storage assembly releases energy, the first energy part is transmitted to the output piece to enable the breaking unit to conduct switching-off operation, and the second energy part is transmitted to the switching-on energy storage assembly to enable the switching-on energy storage assembly to store energy so as to conduct subsequent switching-on operation.

Description

Driving system for dual-power transfer switch and dual-power transfer switch

Technical Field

The invention relates to a driving system for a dual-power transfer switch and the dual-power transfer switch.

Background

At present, with increasing attention to power supply continuity, the switching speed of a dual-power product is also an important index, and the total switching time of 500ms becomes an important requirement. In this case, the product switched using the rotation of the motor is gradually replaced by the product directly pulled by the electromagnet.

On one hand, the switching device needs to have a rapid switching-on and switching-off speed so as to avoid the arcing from influencing the service life of a product, on the other hand, the moving contact and the fixed contact can be reliably contacted, and high contact pressure is needed to keep good contact, and the temperature rise is reduced, so that the main driving spring needs matched energy to perform switching-on and switching-off operation, and after the main driving spring is driven by an electromagnet, the electromagnet needs to obtain enough energy so as to achieve the purpose of energy storage and release in tens of ms, and the main driving spring is easy to test in a low-current product.

With the increase of the current level of the product, the energy of the main spring of the mechanism is correspondingly increased, and the NI required by the electromagnet is always increased under the condition of a certain voltage. If the current I is relatively large, a large voltage drop is generated during the operation of the electromagnet, so that other devices in the power distribution system may be affected, and in particular, malfunction of protection devices or electric equipment sensitive to the voltage drop may be caused. If the number of turns N of the coil is increased in order to control the current, it is necessary to increase the wire diameter in order to adjust to a certain resistance, resulting in a large increase in the copper consumption and a much larger outer diameter of the electromagnet.

Therefore, there is a need for a dual power transfer switch suitable for large power supplies that can be quickly switched.

Disclosure of Invention

The application relates to a drive system for a dual power transfer switch, comprising:

a brake-off energy storage assembly configured to independently store energy under an external driving force;

a transmission operably coupled to the split brake energy storage assembly;

an output member operatively coupled to the transmission mechanism and the breaking unit of the dual power transfer switch such that when the opening energy storage assembly releases energy, the output member drives the breaking unit to perform opening operation via the transmission mechanism;

a closing energy storage component which is operably connected to the output piece, so that when the output piece drives the breaking unit to conduct breaking operation, the closing energy storage component stores energy, and when the closing energy storage component releases energy, the output piece can drive the breaking unit to conduct closing operation,

when the opening energy storage component releases energy, the first energy part is transmitted to the output piece to enable the breaking unit to conduct opening operation, the second energy part is transmitted to the closing energy storage component to enable the closing energy storage component to store energy so as to conduct subsequent closing operation, and the speed of opening operation and closing operation can be changed by changing the ratio between the first energy part and the second energy part.

Advantageously, the split gate energy storage assembly comprises:

a first spring switchable between an energy storage state and an initial state;

a first cam pivotable about a first pivot axis, one end of the first spring being hingedly mounted to the frame and the other end being hingedly mounted to the first cam, the first spring being urged from an initial state to an stored energy state upon pivoting of the first cam, the first cam being provided with a first roller,

a drive member pivotable about a second pivot axis,

in an initial state of the first spring, when the driving member pivots in the first direction, the driving member abuts against the first roller, causing the first cam to also pivot in the first direction, which causes the first cam to urge the first spring from the initial state to the stored energy state.

Advantageously, the drive member comprises a first contour surface and a second contour surface, the shape of the first contour surface and the shape of the second contour surface being designed such that, when the drive member is pivoted in a first direction, the first contour surface first abuts the first roller and pivots the first cam in the first direction, and then the second contour surface abuts the first roller to pivot the first cam in a second direction opposite to the first direction by an angle, the first spring reaching the stored energy state, the first spring being able to release energy from the stored energy state to an initial state after the second contour surface has pivoted past the first roller and to pivot the first cam in a second direction opposite to the first direction to the initial position.

Advantageously, the transmission comprises:

a second cam mounted on the first cam, pivotable with the first cam about a first pivot axis;

and a third cam pivotable about a third pivot axis, the intermediate member being pivotably provided on the third cam and having a second roller, a first end of the intermediate member abutting the second cam via the second roller, a second end of the intermediate member being mounted to the third cam such that when the first spring is switched from the stored energy state to the initial state and the second cam pivots in the second direction with the first cam, the second cam urges the third cam to pivot in the second direction about the third pivot axis via the intermediate member, thereby causing the output member to drive the breaking unit to switch from the on state to the off state.

Advantageously, the second cam comprises a third profile surface against which the second roller of the intermediate piece abuts in the stored energy state of the first spring, the intermediate piece being non-pivotable relative to the third cam when the first spring is switched from the stored energy state to the initial state, the second roller of the intermediate piece being movable relative to the second cam along the third profile surface, the second roller of the intermediate piece being movable relative to the second cam against the fourth profile surface when the first spring is switched to the initial state.

Advantageously, the transmission further comprises a first return spring, one end of which is fixed, the other end of which is arranged on the second end of the intermediate piece, the third cam comprising a groove in which the second end of the intermediate piece is arranged, in the stored energy state of the first spring, the second end of the intermediate piece abuts against one end of the groove, the second cam pushing the third cam via the intermediate piece to pivot in the second direction when the first spring is switched from the stored energy state to the initial state, the first return spring being stretched, the first return spring pulling the third cam to pivot in the first direction when the first spring is switched to the initial state, and the fourth profile surface pushing the intermediate piece to start pivoting, such that the second end of the intermediate piece moves in the groove.

Advantageously, the first cam causes the second cam to pivot in the first direction as the first spring switches from the initial state to the stored energy state, the second roller moving from the fourth contoured surface into abutment with the third contoured surface.

Advantageously, the output member comprises:

a lever pivotable about a fourth pivot axis between a first position corresponding to the first closing position and a second position corresponding to the second closing position, the lever being operatively coupled to the breaking unit;

And a third roller connected to the lever and configured to be pushed by a fifth contour surface of the third cam when the third cam pivots in the second direction about the third pivot axis, thereby pivoting the lever in the second direction about the fourth pivot axis to cause the breaking unit to perform a breaking operation from the first closing position to the breaking position.

Advantageously, the output member further comprises a fourth roller connected to the lever and configured to be pushed by the sixth contoured surface of the third cam when the third cam is pivoted about the third pivot axis in the second direction, so as to pivot the lever about the fourth pivot axis in the first direction, causing the breaking unit to perform the breaking operation from the second closing position to the breaking position.

Advantageously, the closing energy storage assembly comprises:

a second spring, one end of which is hinged to the frame, and the other end of which is connected to the crank arm;

when the first spring is switched from the stored energy state to the initial state such that the third cam urges the lever to pivot about the fourth pivot axis in the first direction or the second direction, the lever urges the second spring to store energy.

Advantageously, the closing energy storage assembly further comprises a positioning plate and a link plate, the positioning plate being mounted to the frame via a projection, the projection being fixed to the machine, the link plate having a connecting portion and a mounting portion about which the second spring is mounted, the connecting portion being connected to the lever such that the second spring is sandwiched between the positioning plate and the connecting portion, the link plate having a recess in which the projection is disposed, the lever pushing the connecting portion and thus the link plate to move such that the second spring disposed between the connecting portion and the positioning plate is compressed to store energy when the first spring is switched from the stored energy state to the initial state such that the third cam pushes the lever to pivot about the fourth pivot axis in the first direction or the second direction.

Advantageously, when the first spring is switched to the initial state, the lever pivots about the fourth pivot axis in the second direction to switch the breaking unit from the first closing position to the opening position or pivots in the first direction to switch the breaking unit from the second closing position to the opening position, and at this time, the second spring is at the "dead point" position, so that under the action of inertia, the second spring releases energy to continue to pivot the lever in the second direction to switch the breaking unit from the opening position to the second closing position or continues to pivot in the first direction to switch the breaking unit from the opening position to the first closing position.

Advantageously, the drive system further comprises a hold and trip assembly configured to hold the first spring in the stored energy state after the first spring is stored energy and to release the hold of the first spring when needed, allowing the first spring to switch from the stored energy state to the initial state.

Advantageously, the driving member has a fifth roller, the holding and unbuckling assembly comprising:

a retainer pivotable about a fifth pivot axis, one end of the retainer abutting the fifth roller after the second contoured surface of the driver abuts the first roller, the other end abutting a stop that prevents the one end of the retainer from pivoting away from the fifth roller, thereby causing the retainer to stop the driver from continuing to pivot past the first roller in the first direction such that the first cam cannot pivot in the second direction to an initial position, the first spring being unable to switch from the stored energy state to the initial state;

And a release member pivotable about a sixth pivot axis and configured to pivot the blocking member out of abutment with the other end of the holding member under the action of an external force such that the one end of the holding member is out of abutment with the fifth roller, thereby enabling the first cam to pivot in the second direction to an initial position, the first spring being switched from the stored energy state to the initial state.

The application also provides a dual power transfer switch which is characterized by comprising the driving system.

Drawings

The advantages and objects of the present application will be better understood in the following detailed description of the preferred embodiments of the application, taken in conjunction with the accompanying drawings. To better illustrate the relationship of the various components in the figures, the figures are not drawn to scale.

Fig. 1 shows a block diagram of a drive system for a dual power transfer switch according to the application, the dual power transfer switch being shown as a dual station.

Fig. 2 shows a block diagram of a drive system for a dual power transfer switch according to the application, the dual power transfer switch being shown as three stations.

Fig. 3 shows a perspective view of a switching off energy storage assembly, a transmission, an output, a switching on energy storage assembly, a holding and tripping assembly of a drive system of a dual power transfer switch according to the application.

Fig. 4 shows a plan view of fig. 3.

Fig. 5 shows a plan view of the switching-off energy storage assembly of the drive system of the dual power transfer switch according to the application, the first spring being in an initial state.

Fig. 6 shows a plan view of the split energy storage assembly of the drive system of the dual power transfer switch according to the present application, with the drive member pivoted in a first direction such that the first contoured surface of the drive member abuts the first roller of the first cam and begins to pivot the first cam in the first direction.

Fig. 7 shows a plan view of the split energy storage assembly of the drive system of the dual power transfer switch according to the present application with the drive member continuing to pivot in the first direction such that the first contoured surface of the drive member continues to pivot the first cam in the first direction to fully charge the first spring.

Fig. 8 shows a plan view of the split energy storage assembly of the drive system of the dual power transfer switch according to the application, with the second contoured surface of the drive member abutting the first roller of the first cam such that the first roller is above the second contoured surface.

Fig. 9a-9d show the operation of the drive system when switching from the first to the second closing position.

Fig. 10a-10d show the operation of the drive system when switching from the second to the first closing position.

Fig. 11 shows a schematic view of the rotation of the trip member in the retention and trip assembly to allow the first spring to release energy.

Fig. 12 shows a lever according to a preferred embodiment of the present invention.

Fig. 13 is a schematic view of a locking assembly according to a preferred embodiment of the present invention wherein the tongue of the lever is to be held in a locked position.

Fig. 14 is a schematic view of the relationship between the locking bolt and the first locking member according to the preferred embodiment of the present invention.

Fig. 15 is a schematic view of another implementation of a biasing mechanism according to a preferred embodiment of the present invention.

Fig. 16 is a schematic view of a frame according to a preferred embodiment of the present invention.

17a-17d are schematic illustrations of a process for locking a lever moving from a second position toward a first position in a locked position in accordance with a preferred embodiment of the present invention.

Fig. 18 a-18 c are schematic views of the operation of the unlocking mechanism according to a preferred embodiment of the present invention.

Fig. 19 is a schematic view of a different implementation of an unlocking mechanism according to a preferred embodiment of the invention.

Fig. 20 is a schematic view of three positions of the lever arm (a first position I corresponding to a first closing position, a locking position II corresponding to a double-split position, and a second position III corresponding to a second closing position).

Detailed Description

In order to make the objects, technical solutions and advantages of the technical solutions of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the specific embodiments of the present disclosure. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Possible implementations within the scope of the present disclosure may have fewer components, have other components not shown in the drawings, different components, differently arranged components, differently connected components, etc., than the examples shown in the drawings. Furthermore, two or more of the elements in the figures may be implemented in a single element or a single element shown in the figures may be implemented as multiple separate elements.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Where the number of components is not specified, the number of components may be one or more; likewise, the terms "a," "an," "the," and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "mounted," "configured," "connected," or "connected" and the like are not limited to physical or mechanical mounting, configuration, connection, but may include electrical mounting, configuration, connection, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships when the apparatus is in use or positional relationships shown in the drawings, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly.

Fig. 1 shows a schematic block diagram of a drive system for a dual power transfer switch according to the invention, which is two-position. The two stations comprise a first closing position and a second closing position. The drive system comprises a split brake energy storage assembly 1 capable of independently storing energy under the influence of an external driving force, such as applied by operating a handle or motor. By "independent" is understood that switching of the split gate energy storage assembly between the initial state and the energy storage state does not affect the position of the other components. The breaking energy storage component 1 is used for enabling breaking units of the dual-power transfer switch to conduct breaking operation when energy is released. The energy released by the opening energy storage component 1 is transmitted to the output member 3 and the closing energy storage component 4 through the transmission mechanism 2, for example, the opening energy storage component 1 transmits a first energy part to the output member 3, so that the output member 3 drives the breaking unit to move to realize opening operation, and simultaneously transmits a second energy part to the closing energy storage component 4, so that the closing energy storage component 4 stores the second energy part, and when the second energy part is released, the output member 3 drives the breaking unit to move to realize closing operation. Therefore, the opening speed and the closing speed, such as quick opening and extinguishing, low-speed closing and bouncing reduction, can be controlled by changing the ratio between the first energy part and the second energy part. The holding and unbuckling assembly 5 is used to hold the split brake energy storage assembly 1 in an energy storage state, and release the holding when needed, allowing the split brake energy storage assembly 1 to release energy.

Fig. 2 shows a functional block diagram of a drive system for a dual power transfer switch according to the invention, which is three-position. The drive system differs from the drive system shown in fig. 1 in that: the drive system of fig. 2 comprises a locking assembly 6 which can lock the output member in a locking position corresponding to the breaking unit's breaking position, while the closing energy storage assembly cannot release energy and thus remains in the stored energy state due to the locking assembly 6 locking the output member in the locking position, the various assemblies and mechanisms described in fig. 1 and 2 being described in detail below.

Fig. 3 and 4 show a perspective view and a plan view, respectively, of the opening energy storage assembly 1, the transmission 2, the output 3, the closing energy storage assembly 4 and the holding and tripping assembly 5 of the drive system according to the invention.

Fig. 5 shows a plan view of the split gate energy storage assembly, in an initial state, without energy stored. The split brake energy storage assembly 1 comprises a first spring 11, one end of which is hinged to a frame (not shown) and the other end of which is hinged to a first cam 12, which first cam 12 is pivotable about a first pivot axis 121, whereby the first spring 11 is switchable between an initial state and an energy storage state in connection with the pivoting of the first cam 12. The driver 13 is pivotable about the second pivot axis 131 under the influence of an external driving force, which is applied, for example, by an operating handle or a motor.

When the driving member 13 is pivoted about the second pivot axis 131 in a first direction (as indicated by arrow A1) under the action of an external driving force, the driving member 13 is able to abut the first roller 122 of the first cam 12 and push the first cam 12 via the first roller 122 also to pivot in the first direction, which causes the first cam to push the first spring 11 such that the first spring starts storing energy, as shown in fig. 6.

The driver 13 includes a first contoured surface 132 and a second contoured surface 133, the first contoured surface 132 first abutting the first roller 122 during rotation of the driver 13, the first contoured surface being shaped to pivot the first cam in a first direction. As the driver 13 pivots, the second contoured surface 133 will begin to abut the first roller 122, at which point the force of the first roller 122 on the driver 13 is above the second pivot axis, as shown in fig. 7. The shape of the second contoured surface 133 is configured to pivot the first cam a small angle in a second direction opposite the first direction, the driving force of this pivoting action being from the release of energy from the first spring 11 (the first spring 11 will extend a small distance) against which the first roller 122 presses, at which point the force of the first roller 122 against the driving member 13 is below the second pivot axis, as shown in fig. 8. At this time, the first spring 11 is in the stored energy state, and if the holding and releasing assembly is present, the first spring 11 is held in the stored energy state. In the absence of a hold and unbuckle assembly, the driver 13 would continue to pivot in the first direction under the drive of the first roller 122, further, the second contoured surface would pivot past the first roller 122, eventually freeing the first roller 122 from any abutment, so that the first spring 11 can release energy.

The process of switching the breaking unit of the double power transfer switch from the first closing position (when the lever is in the first position) to the second closing position (when the lever is in the second position) in the case where the first spring 11 releases the energy will be described below with reference to fig. 9a to 9 d. Fig. 9a-9d are views of the drive system shown from the opposite direction from fig. 3-8.

Fig. 9a shows a plan view of the first spring 11 when it starts to release energy, at which time the breaking unit is in the first closing position. When the first spring 11 releases energy, it pushes the first cam 12 to pivot in a second direction (shown by arrow A3) opposite to the first direction along arrow A2. A second cam 21 is provided on the first cam 12, which second cam 21 can be understood as part of the transmission mechanism, which second cam 21 can be pivoted together with the first cam about the first pivot axis in a second direction (as indicated by arrow A3). The transmission mechanism 2 further comprises an intermediate member 22 and a third cam 23, the intermediate member 22 being connected between the second cam 21 and the third cam 23, being pivotably arranged on the third cam. Specifically, the first end of the intermediate member 22 is provided with a second roller 223, which second roller 223 abuts against the second cam 21, and the second end of the intermediate member 22 is pivotably arranged on the third cam 23, for example in a groove 231 on the third cam 23. The transmission 2 further comprises a first return spring 24, fixed at one end and arranged at the other end on the second end of the intermediate piece, which first return spring acts to return the third cam 23 on the one hand and the intermediate piece 22 on the other hand, as will be described in detail below.

The second cam 21 comprises a third profile surface 211 and a fourth profile surface 212, and in the state shown in fig. 9a, the second roller 223 abuts against the third profile surface 211 of the second cam 21, and when the second cam 21 is pivoted in the second direction indicated by arrow A3, the third cam 23 is pushed via the second roller 223 to pivot about the third pivot axis 232 also in the second direction, and the first return spring 24 is stretched, in the process, the second roller 223 moves along the third profile surface 211 of the second cam 21, eventually reaching the state shown in fig. 9b, at which time the second roller 223 is located on the fourth profile surface 212 of the second cam 21.

The third cam 23 comprises a fifth profile surface 233 and a sixth profile surface 234, which fifth profile surface 233 will abut a third roller 32, which third roller 32 can be understood as part of the output member 3, which is connected to the lever 31, which lever 31 can pivot about the fourth pivot axis 311, as the third cam 23 pivots in the second direction during the changeover of fig. 9a to 9 b. Thus, as the fifth contoured surface 233 pushes against the third roller 32, the lever 31 is able to pivot about the fourth pivot axis 311 in the second direction as well.

One end of the lever 31 is connected to a connecting plate 41, which connecting plate 41 can be understood as part of the closing energy storage assembly 4. The closing energy storage assembly 4 comprises a second spring 42, one end of which rests on a positioning plate 43 and the other end is connected to the connecting plate 41. The link plate 41 has a connecting portion 411 and a mounting portion 412, the second spring 42 being mounted around the mounting portion 412, the connecting portion 411 being connected to the crank arm 31 such that the second spring 42 is sandwiched between the positioning plate 43 and the connecting portion 411, the link plate 41 having a groove 413, a projection 414 being provided in the groove 413, the projection 414 being fixed to a frame (not shown), the positioning plate 43 being abutted against the projection 414. When the lever 31 is pivoted about the fourth pivot axis in the second direction, the lever will push the connection part and thus the link plate 41 in the direction of arrow A4, so that the protrusion 414 moves relatively in the groove 413, whereby the second spring 42 arranged between the connection part 411 and the positioning plate 43 is compressed to store energy, and finally the state shown in fig. 9b is reached, and the breaking unit is switched from the first closing position to the double-breaking position (or breaking position). In the present application, although there is no actual "double position" in the case of the double station, for convenience of explanation, it is assumed that there is a virtual "double position" in the case of the double station, which is the same as the actual "double position" in the case of the triple station.

In the state shown in fig. 9b, the protrusion 414, the fourth pivot axis 311, and the connection point S of the lever 31 and the connection portion 411 are positioned on the same line, so that the second spring 42 is in the "dead point" position. In this position, under the effect of inertia, the lever 31 continues to pivot in the second direction, the point S moves to the left of the line connecting the protrusion 414 and the fourth pivot axis 311, the driving moment direction of the lever 31 by the second spring 42 is the same as the second direction, and the second spring 42 releases energy to continue to pivot the lever 31 in the second direction, so that the breaking unit is switched from the double-breaking position to the second switching-on position, as shown in switching from fig. 9b to 9 c.

In the state shown in fig. 9b, the third cam is pivoted in the first direction (as indicated by arrow A1) under the action of the first return spring 24, and the second roller of the intermediate piece is located on the fourth contoured surface 212 of the second cam 21, since the lever 31 continues to pivot in the second direction by releasing energy from the second spring 42. Thus, under the action of the first return spring 24 pulling the third cam to pivot in the first direction and the second roller to move along the fourth contoured surface 212, the intermediate member will pivot in the second direction such that the second end of the intermediate member moves within the channel 231 to the position shown in fig. 9 c.

In the state of fig. 9c, when the first spring 11 is restoring energy in the direction indicated by the arrow A5, the first cam 12 drives the second cam 21 to pivot in the first direction, so that the intermediate member 22 pivots in the first direction under the action of the first return spring, and the second roller 223 moves from the fourth profile surface to the third profile surface, as shown in fig. 9d, at which time the breaking unit is in the second closing position.

Having described the process of reaching the second closing position from the first closing position via the double-split position, the process of reaching the first closing position from the second closing position via the double-split position is described below with reference to fig. 10a to 10d, and since it is basically the same in principle as the process of 9a to 9d, the differences from fig. 9a to 9d will be mainly described.

In the second closing position shown in fig. 10a, the first spring 11 starts to release energy, causing the first cam 12 to pivot the second cam 21 in the second direction, and thus the third cam in the second direction, the process being the same as described above. The pivoting of the third cam causes the sixth contoured surface 234 to abut and push against the fourth roller 33, which is also connected to the lever 31. This causes the lever arm 31 to pivot in the first direction, compressing the second spring 42 to store energy, to the state shown in fig. 10b, corresponding to the double-split position of the breaking unit. At this time, the protrusion 414, the fourth pivot axis 311, and the connection point S of the lever 31 and the connecting portion 411 are positioned on the same line, so that the second spring 42 is at the "dead point" position. In this position, under the effect of inertia, the lever 31 continues to pivot in the first direction, the point S moves to the right of the line connecting the protrusion 414 and the fourth pivot axis 311, the driving moment direction of the lever 31 by the second spring 42 is the same as the first direction, and the second spring 42 releases energy to continue to pivot the lever 31 in the first direction, so that the breaking unit is switched from the double-breaking position to the first switching-on position, as shown in switching from fig. 10b to 10 c. The switch from fig. 10c to fig. 10d is substantially the same as the switch from fig. 9c to fig. 10d, and thus will not be described again.

Having described the operation of the drive system without the presence of the hold and trip assembly, the following describes how the hold and trip assembly holds the split brake energy storage assembly in the stored energy state and trips.

As shown in fig. 4, which shows the holding and tripping assembly holding the brake release energy storage assembly in the energy storage state, the fifth roller 134 of the drive member 13, the holding and tripping assembly 5 comprises a holding member 51 in the form of a lever pivotable about a fifth pivot axis 511. In the condition shown in fig. 4, one end of the retainer abuts against the fifth roller 134 and the other end abuts against a blocking member 52, the blocking member 52 prevents the one end of the retainer from pivoting away from the fifth roller 134, thereby allowing the retainer to block the drive member 13 from continuing to pivot past the first roller 122 in the first direction such that the first cam cannot pivot in the second direction to the initial position and the first spring cannot switch from the stored energy condition to the initial condition.

The holding and releasing assembly 5 further comprises a release member 53 pivotable about a sixth pivot axis 531. As shown in fig. 11, when the first spring is required to release energy, the trip member 53 can pivot about the sixth pivot axis in the direction indicated by arrow A3 by an external force, pushing the blocking member to pivot the blocking member in the direction indicated by arrow A3 out of abutment with the other end of the retaining member, such that one end of the retaining member continues to pivot in the first direction out of abutment with the fifth roller, whereby the first cam can pivot in the second direction to the initial position, and the first spring can release energy. The external force for pivoting the unlocking member is applied by, for example, a manual actuation button 54 or an electromagnet 55 shown in fig. 11, both of which can push the unlocking member 53 via a pressing member 56 to pivot in the direction indicated by arrow A1.

The locking assembly 6 for locking the lever in a locking position between the first and second positions (when the breaking unit is in the double position) is described in detail below.

To lock the lever 31 in the locking position, a lock tongue 312 is provided on the lever 31 for cooperating with the locking assembly according to the present invention to lock the lever 31 in the off position (hereinafter referred to as locking position). The tongue 312 may have any suitable form, and may be, for example, a protrusion from the lever 31, or an additional component mounted on the lever 31, or the like.

Referring specifically to fig. 12-17d, a locking assembly according to a preferred embodiment of the present invention includes a first locking member 61 and a second locking member 62. By the relative movement between the first locking piece 61 and the second locking piece 62, an openable and closable locking port 63 is formed between the first locking end 611 of the first locking piece 61 and the second locking end 621 of the second locking piece 62 (see fig. 17 c). Further, the locking port 63 is capable of receiving the locking tab 312 and retaining the locking tab 312 between the first locking end 611 of the first locking member 61 and the second locking end 621 of the second locking member 62 during movement of the lever 31 between the first and second positions (see fig. 17 d) to lock the lever 31 in the locked position between the first and second positions.

It should be appreciated that the relative movement of the first locking member 61 and the second locking member 62 may take a variety of forms, such as translational relative movement, rotational relative movement, and a combination of translational and rotational movement, provided that an openable and closable locking port 63 can be formed therebetween, in accordance with the principles of the present invention. In addition, the relative movement between the first locking member 61 and the second locking member 62 may be triggered by various means, for example, a respective driving mechanism may be provided for the two locking members, respectively, or may be triggered by the action of the lock tongue 312 as in the preferred embodiment described later, or a linkage mechanism may be provided therebetween so as to cause the two to move in opposite directions in synchronization, i.e., either close to each other or away from each other. The actions of opening the locking port 63 and closing the locking port 63 may also be accomplished by different components or mechanisms, so long as the locking port 63 is closed after receiving the locking tongue 312 to hold the locking tongue 312 in the locked position. It will be appreciated that the locking port 63 is normally kept closed and opened as needed to receive the locking bolt 312, and then to retain the locking bolt 312 between the first locking end 611 and the second locking end 621. The closing of the locking port 63 does not mean that the first locking end 611 and the second locking end 621 have to be in abutting contact with each other, but that they may have a certain gap in advance in order to avoid unnecessary interaction forces between them.

The specific structure of the components and the like in a preferred embodiment of the locking assembly according to the present invention will be described. Referring specifically to fig. 13-16, in the preferred embodiment, the first locking member 61 is formed as a generally zig-zag member having locking and unlocking lever arms 612, 613 that lie in two different planes and extend in opposite directions, and an intermediate lever arm 614 connecting the locking and unlocking lever arms 612, 613. The first lock 61 may include a first pivot 615. The first pivot 615 may be provided, for example, at a connection between the lock lever arm 612 and the intermediate lever arm 614 of the first locking member 61, such that the first locking member 61 is capable of pivotal movement about the first pivot 615. The lock lever arm 612 of the first lock 61 includes a first locking end 611. The unlocking lever arm 613 of the first locking member 61 can also be actuated to rotate the first locking end 611 away from the retained locking tongue 312 (the unlocking process will be described in more detail later).

The second locking member 62 may have the same structure as the first locking member 61 and a mirror-symmetrical arrangement of the two. I.e. the second locking member 62 is formed with a locking lever arm and an unlocking lever arm, which lie in two different planes and extend in opposite directions, and an intermediate lever arm connecting the locking lever arm and the unlocking lever arm. The second lock 62 may include a second pivot 622. The second pivot 622 may be provided, for example, at a connection between the lock lever arm and the intermediate lever arm of the second lock member 62. The lock lever arm of the second lock 62 includes a second locking end 621. The unlocking lever arm of the second locking member 62 can be actuated to rotate the second locking end 621 away from the retained tongue 312.

It should be understood that while in the preferred embodiment shown in the drawings, the first and second locking members 61, 62 are formed as generally Z-shaped members comprising multiple lever arms, various modifications may be made to the specific shape and configuration of the locking members and the functions described above and below may be accomplished without departing from the scope of the present invention after understanding the principles of the present invention. For example, the first locking piece 61 and the second locking piece 62 may be formed as plate-like or block-like members, instead of lever-like members having lever arms; the pivot setting positions of the two can also be changed.

According to a further preferred embodiment of the present invention, the first locking member 61 further comprises a first biasing mechanism 616, which first biasing mechanism 616 applies a force to the first locking member 61 tending to close the locking port 63 (the force will be described in detail later).

The first biasing mechanism 616 may be formed, for example, as a spring and is disposed on the intermediate lever arm 614 of the first locking member 61. Further preferably, referring to fig. 14, the crank arm 31 may apply a clockwise torque to the first locking end 611 of the first locking member 61 through the locking tongue 312, and the first biasing mechanism 616 of the first locking member 61 also applies a clockwise torque to the first locking member 61, both in the same direction (such a same direction torque will be described in detail later). A preferred embodiment for achieving such a torque in the same direction is that the first locking end 611 of the first locking member 61 is formed to have an arc surface (shown as a dotted circle in fig. 14) whose center (shown as a cross symbol in fig. 14) is disposed to be eccentric to the rotation center (shown as a solid circle in fig. 14) of the first pivot shaft 615.

Similarly, the second locking member 62 also includes a second biasing mechanism 623, the second biasing mechanism 623 applying a force to the second locking member 62 tending to cause the second locking member 62 to close the locking aperture 63. The second biasing mechanism 623 may also be formed, for example, as a spring and is provided on the lever arm of the second locking member 62. It is further preferred that the torque applied by the lever 31 to the second locking end 621 of the second locking member 62 through the tongue 312 is in the same direction as the torque applied to the second locking member 62 by the second biasing mechanism 623 of the second locking member 62. Although not shown, the second locking end 621 of the second locking piece 62 may also be formed to have an arc surface whose center is disposed to be eccentric to the rotation center of the second pivot shaft 622.

Due to this "non-concentric" arrangement, the force exerted by the locking bolt on the locking element always urges the locking element to rotate in the reset direction. This preferred "non-concentric" configuration ensures that the locking member will not be deflected by the strike as the locking tab strikes the locking end of the locking member during the corresponding opening action described below, thereby ensuring that the locking tab will push the locking member smoothly and open the locking aperture.

It is to be understood that the particular form of the locking ends of the two locking members, their relationship to the pivot center, and the location and form of the biasing mechanism arrangement may be modified without departing from the scope of the invention after understanding the principles of the present invention. For example, as shown in fig. 15, the biasing mechanisms 616 and 623 may be combined into one biasing mechanism 616/623, which may simply be implemented as an extension spring, mounted in place on the first locking member 61 and the second locking member 62 to apply spring forces on both the first locking member 61 and the second locking member 62.

According to a further preferred embodiment of the present invention, a mechanism is also proposed that allows the first locking member 61 and the second locking member 62 to rapidly open and close the locking port 63. Specifically, the first locking member 61 and the second locking member 62 may be connected by a link mechanism 64 to synchronize the reverse movement of the first locking member 61 and the second locking member 62 and to transmit the force between the first locking member 61 and the second locking member 62. For example, when the first locking member 61 and the second locking member 62 are moved toward or away from each other to close or open the locking port 63, the locking port 63 can be quickly closed or quickly opened to an appropriate size without the first locking member 61 and the second locking member 62 each having to be moved too far due to the presence of the link mechanism 64. In addition, due to the presence of linkage 64, biasing mechanisms 616 and 623 are equivalent to being connected in parallel, and the biasing forces from biasing mechanisms 616 and 623 also create a resultant force that facilitates, among other things, reliably holding locking bolt 312 and providing a return force for the respective locking member.

Preferably, the link mechanism 64 may include a first link 641 pivotally connected to the first pivot 615 of the first locking member 61, a second link 642 pivotally connected to the second pivot 622 of the second locking member 62, and an intermediate link 643 pivotally connecting the first link 641 and the second link 642.

Further preferably, the locking assembly of the present invention may also include a frame 65, which frame 65 may be a plate member mounted in the housing of the TSE, as shown in FIG. 16. The intermediate link 643 of the linkage 64 may be pivotally mounted on the frame 65 by its pivot 6431.

Further preferably, the frame 65 may further include a first sliding slot 651 and a second sliding slot 652. The first sliding slot 651 is configured to receive the first pivot 615 of the first locking member 61 and limit a range of movement of the first locking member 61; the second slide 652 is adapted to receive the second pivot 622 of the second locking member 62 and limit the range of motion of the second locking member 62. Specifically, in the orientation of the figure, the upper end of the first slide slot 651 defines an upper limit position of the second opening motion of the first locking member 61, and the lower end of the second slide slot 652 defines a lower limit position of the first opening motion of the second locking member 62. And the pivots of the locking members slide in the corresponding slide grooves during the corresponding opening actions of the two locking members.

In addition, a set of link mechanisms 64 may be installed on each side of the first and second locking members 61 and 62, respectively, to more stably transmit movement and force. Further, the frame 65 may include two side plates for mounting the linkage and other components that need to be mounted to the frame, with corresponding slide slots 651 and 652 provided on each side plate.

The process when the crank arm 31 is moved from the second position toward the first position and locked in the intermediate position in the preferred embodiment according to the present invention will be described with reference to fig. 17a to 17 d. For clarity, the illustration of lever 31 is omitted in fig. 17a-17d, and only its tongue 312 is shown.

In fig. 17a, lever 31 starts to rotate clockwise from the second position, at which time locking opening 63 between first locking member 61 and second locking member 62 remains closed.

In fig. 17b, the lever 31 has made a first preliminary movement of the first locking member 61 to partially open the locking port 63-preferably, as the lever 31 rotates, its tongue 312 will contact the first locking member 61 and thereby push the first locking member 61 to rotate about its pivot 615, thereby partially opening the locking port 63. It should be understood that this first preliminary action may be achieved not by the lever 31 but by a sensor provided for the lever and a driving means provided for the locking member, for example, by sensing the position of the lever 31 and then driving the first locking member 61 by the driving means in a timely manner so that the first locking member 61 makes an action of avoiding the lock tongue 312 and partially opening the locking port 63. Therefore, the first preliminary action is not an essential action.

In fig. 17c, the lever 31 applies a first opening action to the second locking piece 62 which fully opens the locking opening 63-preferably, during clockwise rotation of the lever 31, its second spring 42 is progressively compressed for storing energy; further, as the tongue 312 of the lever 31 will push the locking end 621 of the second locking member 62, causing the second locking member 62 to move downwardly until reaching the extreme position of the second locking member 62 as shown in fig. 17c, at which time the lever 31 rotates past the spring dead point of its second spring 42, the tongue 312 is in a position slightly beyond the locking position and the second spring 42 applies a force urging the lever 310 to rotate clockwise, wherein the extreme position herein means that the first locking member 61 or the second locking member 62 moves to a position furthest away from the center plane between the first locking member 61 and the second locking member 62 (the plane perpendicular to the paper surface as shown by the dash-dot line in fig. 17 a); in the process, due to the presence of the linkage 64 and the biasing mechanism, the first locking member 61 moves in opposite directions (as indicated by the arrow) synchronously with the second locking member 62, which are away from each other, and the biasing mechanisms 16 and 26 thereof will apply a biasing force, F, to the first locking member 61 by the first biasing mechanism 616 ₁ And a biasing force F applied to the second locking member 62 by the second biasing mechanism 623 ₂ A resultant force F is formed by the linkage 64, which in turn acts on the tongue 312 in contact therewith through the locking end of the second locking member 62; meanwhile, since the tongue 312 has moved away from the first locking member 61, the first locking member 61 will move in a direction opposite to the direction of the first preliminary movement by the torque applied by the first biasing mechanism 616 thereof, returning to its non-rotated state.

In fig. 17d, after the second locking member 62 has moved to its extreme position during the first priming action as described previously, the second locking member 62 causes the lever 31 to make a first return action towards the locking position-preferably, as the first and second locking members 61, 62 move away from each other under the urging of the lever 31 in fig. 17c, the biasing force of their respective biasing mechanisms gradually increases, when the second locking member 62 moves to its extreme position such that the resultant force F from the biasing mechanism is greater than the clockwise rotational force of the second spring 42 acting on the lever 31, the second locking member 62 will prevent further clockwise rotation of the lever 31 and will push the lever 31 back in a counter-clockwise direction, and the first and second locking members 61, 62 will also move synchronously towards each other (as indicated by the arrow) and eventually lock the tongue 312 in the locking position; at this time, the second spring 42 also returns to the spring dead point position. In this locked position, the first and second biasing mechanisms 616, 623 always apply biasing forces to the first and second locking members 61, 62, respectively, making the locking of the tongue 312 more secure. Thereby realizing the conversion from the second closing position to the double-dividing position.

The process of moving the lever 31 from the first position toward the second position and being locked in the intermediate position is similar to that described above. Briefly, during the movement of the lever 31 from the first position to the second position, the lever 31 applies a second opening movement to the first locking member 61 that completely opens the locking opening 63, and before this second opening movement the lever 31 also enables the second locking member 62 to make a second preliminary movement (as previously mentioned, this second preliminary movement is not a necessary step) that partially opens the locking opening 63. After the first locking member 61 moves to its limit position during the second opening movement, the first locking member 61 makes the lever 31 perform a second returning movement toward the locking position, thereby locking the tongue 312 in the locking position.

In the process, the connecting rod mechanism is arranged, when any locking piece is pushed open by the lock tongue to move, the other locking piece opposite to the lock tongue moves reversely, so that the lock tongue can be opened by a small angle from the dead point position of the energy storage spring, and the lock tongue can smoothly enter the lock opening, thereby being beneficial to reducing impact. Moreover, because the resistance of the stored energy spring after passing the dead point is relatively small, the spring bolt is pushed by the biasing mechanism with smaller force value, so that the stored energy spring is restored to the spring dead point position.

Also in the preferred embodiment, the first biasing mechanism and the second biasing mechanism are connected in parallel by providing a linkage. When the bolt is slightly deflected from the center of the locking hole to any direction, the bolt is separated from one locking piece immediately and pushed back by the other locking piece, and the pushing back force is the resultant force of the first biasing mechanism and the second biasing mechanism which are combined through the connecting rod mechanism, so that the required force value of each biasing mechanism is reduced, namely the volume of the biasing mechanism is reduced.

Furthermore, in the preferred embodiment, the biasing mechanism of each locking element provides both a force to return the locking element to the locking position and a torque to return the locking element, with a single biasing mechanism achieving both effects, resulting in a simpler construction and reduced parts count.

While the locking assembly and its locking process have been described above with respect to a preferred embodiment of the present invention, it is to be understood that changes may be made in the specific mechanism of the locking assembly and its manner of operation without departing from the scope of the invention. For example, although in the preferred embodiment, for each locking element, the respective priming and return actions are effected by the same biasing mechanism, separate biasing mechanisms (or return mechanisms) may be provided for the priming action, such as a torsion spring may be provided for the pivot of the locking element which enables the locking element to return after the priming action is completed. Further, the biasing mechanism may be configured to apply only the biasing force that achieves the return action described above to the corresponding locking member, i.e., the biasing force may also be configured to pass through the pivot center of the corresponding locking member, and the force of the tongue 312 on each locking end may also be configured to pass through the respective pivot center. For example, an active driving device (instead of a passive biasing mechanism) may be provided for the locking piece, and for example, a sensor may be provided for the lever and a driving device may be provided for the locking piece, and after the position of the lever 31 is sensed, the locking piece may be driven by the driving device in a timely manner to cause the locking piece to apply a return motion to the lever. For another example, although in the preferred embodiment the preliminary movement of the locking members is by rotational movement about respective pivots, a mechanism for translational movement of the locking members may be provided so long as the locking members are temporarily retracted from the locking tongues 312 so that the locking tongues 312 exert a corresponding opening movement on the respective locking members.

Further preferably, referring to fig. 16, the housing 65 of the locking assembly may further include: a first limiting structure 653 for limiting the range of the first preliminary movement of the first locking member 61; and a second stopper 654 for restricting the range of the second preliminary movement of the second locking member 62. This limiting effect may be achieved in a variety of suitable ways. For example, referring further to fig. 13, in a preferred embodiment according to the present invention, the first locking member 61 may include a protrusion 617, and the first limiting structure 653 of the frame 65 may be implemented in the form of a limiting groove whose side limits the range of motion of the first locking member 61 by limiting the protrusion 617. Similarly, the second locking member 62 may include a tab 624 and the second retaining structure 654 may be embodied in the form of a retaining groove.

By providing such a limiting structure, taking the first locking member 61 as an example, the left side edge of the limiting groove limits the range of rotation of the first locking member 61 in the reset direction, because the same directional torque applied by the biasing mechanism 616 and the locking tongue 312 to the first locking member 61 causes the first locking member 61 to move in the reset direction, the left side edge of the limiting groove can resist the same directional torque from the biasing mechanism 616 and the locking tongue 312 to limit the range of the reset movement. In the state shown in fig. 16 in which the tongue 312 has been locked in place, the projection 617 of the first locking member 61 abuts against the left side edge of the limit groove, and the first locking member 61 is stably held in the position shown in the figure. On the other hand, when the first locking member 61 performs the second opening motion and the tongue 312 pushes the first locking member 61, as described above, the first pivot 615 of the first locking member 61 slides in the slide slot 651, and the protrusion 617 slides against the left side of the limit slot, which guides the second opening motion of the first locking member 61, thereby ensuring a smooth translational motion of the first locking member 61.

The second locking member 62 has a similar condition to the first locking member 61. Briefly, the left side of the limiting groove may resist the same direction of torque from the biasing mechanism 623 and the locking tab 312 to limit rotation of the second locking member 62 in the reset direction. In the state shown in fig. 16 in which the tongue 312 is locked in place, the projection 624 (not shown in fig. 16) of the second locking piece 62 abuts against the left side edge of the stopper groove. When the second locking member 62 performs the first opening operation and the tongue 312 pushes the second locking member 612, the protrusion 624 slides against the left side of the limit groove, and the limit groove guides the first opening operation of the second locking member 62, thereby ensuring a smooth translational movement of the second locking member 62.

According to a further preferred embodiment of the present invention, the present invention also provides an unlocking mechanism 67 for unlocking the locking assembly, which can actuate the first locking member 61 or the second locking member 62 to release the holding of the tongue 312 by the first locking member 61 and the second locking member 62.

Preferably, the locking assembly 6 may include: a first actuator arranged to urge the first locking member 61 away from the tongue 312; and a second actuating member configured to urge the second locking member 62 away from the tongue 312. The first and second actuators may be implemented with a variety of suitable shapes and configurations. Preferably, the first and second actuation tabs 671, 672 may be configured as members rotatable about respective pivots, such as the generally triangular shaped tab shown in fig. 18.

Further preferably, referring to fig. 18a, the unlocking mechanism 67 may also simply comprise a single handle 673 for driving the first and second actuation tabs 671, 672. The first actuating plate 671 may be configured to include an end for actuating the movement of the first locking member 61 and another end driven by the single handle 673. The second actuation tab 672 may be configured to include an end for actuating movement of the second lock 62 and another end which is actuated by the single handle 673. Accordingly, the single handle 673 may be configured to pivot about its pivot axis and have a head for driving the other end of the first actuation tab 671 and the other end of the second actuation tab 672, respectively, and a handle portion that may be operated by a user. Preferably, the handle may be located remotely from the locking assembly, avoiding danger to the user.

According to a preferred embodiment, illustrated in fig. 18a, the first actuation tab 671 can be rotated under the drive of a single handle 673 to push the unlocking lever arm 613 of the first locking member 61 at its end, enabling the first locking member 61 to be rotated about its first pivot 615 away from the tongue 312, preferably moving the first locking member 61 in the same direction as the direction of the first preliminary movement. Similarly, the second actuating plate 672 can be rotated by actuation of the single handle 673 to cause the distal end thereof to push the unlocking lever arm of the second locking member 62, which enables the second locking member 62 to rotate about its second pivot 622 away from the tongue 312, preferably causing the second locking member 62 to move in the same direction as the direction of the second priming action.

The process of unlocking from the locking position of the tongue 312 and moving the lever towards the second position, which corresponds to the switching from the double-split position to the second closing position, is described below with reference to fig. 18a-18 c.

In fig. 18a, the bolt 312 is locked in the locked position II (as shown in fig. 20), which corresponds to the breaking unit being in the double position. At this time, by rotating the handle 673 clockwise, the lock on the lock tongue 312 can be released, and the crank arm 31 can be moved toward the second position III.

In fig. 18b, as the handle 673 is rotated clockwise, the head thereof causes the first actuation tab 61 to pivot about its pivot axis, the distal end of the first actuation tab 61 pushing on the unlocking lever arm 613 of the first locking member 61 such that the first locking member 61 rotates about its first pivot axis 615 away from the locking tongue 312; further, the resultant force of the biasing force applied to the second locking member 62 by the second biasing mechanism 623 and the biasing force applied to the locking member 1 by the first biasing mechanism 616 transmitted through the link mechanism 64 will urge the tongue 312 to rotate counterclockwise by the locking end 621 of the second locking member 62, and correspondingly the crank arm 31 will also move away from its spring dead center position of the second spring 42.

In fig. 18c, after the lever 31 leaves the spring dead point position of the second spring 42, the second spring 42 continues to release the stored energy to apply the power for rotating the lever 31 toward the second position, and finally rotate the lever 31 to the second position, that is, the switching from the double-split position to the second closing position is completed.

The above describes how to unlock the locking of the lever arm, so that the breaking unit is switched from the double-breaking position to the second closing position, and for those skilled in the art, it can be easily thought how to switch the breaking unit from the double-breaking position to the first closing position, so that a detailed description is omitted. Moreover, in connection with the descriptions of fig. 9a-9d and fig. 10a-10d, those skilled in the art will understand how to switch between the first closing position, the double opening position and the second closing position for the three-position double power transfer switch, and will not be repeated herein.

In addition, while the preferred embodiment shown in FIGS. 18a-18c includes an unlocking mechanism comprised of a single handle and two actuation tabs, those skilled in the art will appreciate that the unlocking mechanism may be implemented in a variety of ways without departing from the scope of the present invention.

For example, instead of providing a single handle 673, the unlocking mechanism may comprise different mechanisms (e.g., two handles) for driving the first and second actuation tabs 61, 62, respectively.

As another example, fig. 19 shows that the first actuator of the unlocking mechanism may be configured as an electromagnetic drive 68 having a coil 681 and a plunger 682 arranged to actuate the first locking member 61; similarly, the second actuator may also be configured as an electromagnetic drive 69 having a coil 691 and a plunger 692 configured to actuate the second lock 62. Thus, in the orientation of fig. 19, the plunger of each electromagnetic actuator may be pulled to the left to respectively actuate the unlocking lever arms of the corresponding locking members to effect an electrical operation of unlocking the locking assemblies, such as by depressing the corresponding control buttons on the external console. Moreover, in the embodiment shown in fig. 19, the manual unlocking and the electrical unlocking may coexist, without interfering with each other, independently of each other.

Further preferably, the unlocking mechanism may further include a resetting member 674 for resetting the first actuating plate 671 and a limiting member 675 for limiting the movement range of the first actuating plate 671. The return member 674 may preferably be implemented as a tension spring coupled to the distal end of the first actuation tab 671. The stop member 675 may preferably be implemented as a stop that can block the other end of the first actuation tab 671. Similarly, the unlocking mechanism may further include a return member 676 for returning the second actuation tab 672 and a stop member 677 for limiting the range of motion of the second actuation tab 672. The return member 676 may preferably be embodied as a tension spring connected to the end of the second actuation tab 672. The stop 677 may preferably be implemented as a stop that can block the other end of the second actuation tab 672. Further, by adjusting the tension spring, the operation force of the handle 673 can also be adjusted.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A drive system for a dual power transfer switch, the drive system comprising:

a transmission operably coupled to the split brake energy storage assembly;

a closing energy storage component operatively coupled to the output member such that when the output member drives the breaking unit to perform a breaking operation, the closing energy storage component stores energy and the closing energy storage component is capable of releasing the stored energy, thereby causing the output member to drive the breaking unit to perform a closing operation,

When the opening energy storage component releases energy, a first energy part of the released energy is transmitted to the output piece to enable the breaking unit to conduct opening operation, and a second energy part of the released energy is transmitted to the closing energy storage component to enable the closing energy storage component to store energy so as to conduct subsequent closing operation.

2. The drive system of claim 1, wherein the split gate energy storage assembly comprises:

a first spring switchable between an energy storage state and an initial state;

a drive member pivotable about a second pivot axis,

3. The drive system of claim 2, wherein the drive member includes a first contoured surface and a second contoured surface, the first contoured surface and the second contoured surface being shaped such that when the drive member is pivoted in a first direction, the first contoured surface first abuts the first roller and causes the first cam to pivot in the first direction, and then the second contoured surface abuts the first roller to cause the first cam to pivot an angle in a second direction opposite the first direction, the first spring switching to the stored energy state, the first spring being capable of releasing energy from the stored energy state to the initial state and causing the first cam to pivot in a second direction opposite the first direction to the initial position after the second contoured surface pivots past the first roller.

4. A drive system as claimed in claim 3, wherein the transmission mechanism comprises:

5. The drive system of claim 4, wherein the second cam includes a third contoured surface and a fourth contoured surface, the second roller of the intermediate member abutting the third contoured surface in the stored energy state of the first spring, the intermediate member being non-pivotable relative to the third cam when the first spring is switched from the stored energy state to the initial state, the second roller of the intermediate member moving relative to the second cam along the third contoured surface, the second roller of the intermediate member moving relative to the second cam into abutment with the fourth contoured surface when the first spring is switched to the initial state.

6. The drive system of claim 5, wherein the transmission further comprises a first return spring having one end fixed and the other end disposed on the second end of the intermediate member, the third cam including a groove in which the second end of the intermediate member is disposed, the second end of the intermediate member abutting against one end of the groove in the stored energy state of the first spring, the second cam pushing the third cam to pivot in the second direction via the intermediate member upon switching of the first spring from the stored energy state to the initial state, the first return spring being stretched, the first return spring pulling the third cam to pivot in the first direction when the first spring is switched to the initial state, and the fourth contoured surface pushing the intermediate member to begin pivoting such that the second end of the intermediate member moves in the groove.

7. The drive system of claim 6, wherein the first cam pivots the second cam in the first direction as the first spring switches from the initial state to the stored energy state, the second roller moving from the fourth contoured surface into abutment with the third contoured surface.

8. The drive system of claim 4, wherein the output member comprises:

9. The drive system of claim 8, wherein the output member further comprises a fourth roller coupled to the lever and configured to be urged by a sixth contoured surface of the third cam when the third cam pivots about the third pivot axis to pivot the lever about the fourth pivot axis in the first direction to cause the breaking unit to perform a breaking operation from the second closing position to the breaking position.

10. The drive system of claim 8, wherein the closing energy storage assembly comprises:

11. The drive system of claim 10, wherein the closing energy storage assembly further comprises a positioning plate and a link plate, the positioning plate being hingedly mounted to the frame via a protrusion, the protrusion being secured to the frame, the link plate having a connecting portion and a mounting portion about which the second spring is mounted, the connecting portion being connected to the lever such that the second spring is sandwiched between the positioning plate and the connecting portion, the link plate having a recess within which the protrusion is disposed, the lever pushing the connecting portion and thereby pushing the link plate to move such that the protrusion moves relatively within the recess when the first spring is switched from the energy storage state to the initial state such that the third cam pushes the lever to pivot about the fourth pivot axis in the first direction or the second direction, such that the second spring disposed between the connecting portion and the positioning plate is compressed to store energy.

12. A drive system as claimed in claim 10, wherein when the first spring is switched to the initial state, the lever pivots about the fourth pivot axis in the second direction to switch the breaking unit from the first closing position to the opening position or in the first direction to switch the breaking unit from the second closing position to the opening position, and the second spring is in the "dead centre" position, such that the second spring releases energy under the influence of inertia to continue to pivot the lever in the second direction to switch the breaking unit from the opening position to the second closing position or in the first direction to switch the breaking unit from the opening position to the first closing position.

13. The drive system of claim 3, further comprising a hold and trip assembly configured to hold the first spring in the stored energy state after the first spring is stored energy and to release the hold of the first spring when needed, allowing the first spring to switch from the stored energy state to the initial state.

14. The drive system of claim 13, wherein the drive member has a fifth roller, and the hold and trip assembly comprises:

15. A dual power transfer switch comprising a drive system according to any one of claims 1-14.