CN117253726A

CN117253726A - Operating assembly for a moving part and dual power transfer switch

Info

Publication number: CN117253726A
Application number: CN202210656236.5A
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: 2022-06-10
Filing date: 2022-06-10
Publication date: 2023-12-19

Abstract

The present invention provides an operation assembly for operating a moving member movable between a first position and a second position and including a first driven portion and a second driven portion, the operation assembly comprising: a guide feature; a drive member which is translationally movable between an initial position and a drive position at least under the guidance of the guide feature and comprises a first drive portion and a second drive portion; wherein when the moving member is at the first position, the first driving part drives the first driven part by the movement of the driving member from the initial position to the driving position so as to move the moving member from the first position toward the second position; and wherein the second driving portion drives the second driven portion by movement of the driving member from the initial position to the driving position when the moving member is in the second position, so that the moving member moves from the second position toward the first position.

Description

Operating assembly for a moving part and dual power transfer switch

Technical Field

The present invention relates to an operating assembly for a moving part and a dual power transfer switch including the same.

Background

In some mechanical devices, moving parts are often included, which can typically move between two positions. In the electrical field, a dual power Transfer Switch (TSE) is a relatively important electrical device switch for powering important loads to ensure electrical continuity. The TSE typically includes a moving contact lever, a two-position TSE having a normal position a (power on 1) and a standby position B (power on 2), as shown in fig. 5.

In the prior art, if the movable contact crank arm 1 needs to be switched between the positions A and B, driving forces in different directions need to be applied. The common scheme is that two sets of unidirectional driving devices are arranged for the crank arm 1 so as to apply driving forces along different directions respectively; or a set of devices capable of performing bidirectional driving is arranged. Both of these existing schemes have the disadvantages of complex structure, many parts and poor reliability.

Disclosure of Invention

In view of the above-mentioned problems and needs, the present disclosure proposes a novel technical solution, which solves the above-mentioned problems and brings about other technical effects due to the following technical features.

Preferably, the first driven portion and the first driving portion are close to each other and the second driven portion and the second driving portion are distant from each other when the moving member is in the first position, and the first driven portion and the first driving portion are distant from each other and the second driven portion and the second driving portion are close to each other when the moving member is in the second position.

Preferably, the driving member is configured to: after the first driving part drives the first driven part and reaches the driving position of the driving piece, the second driven part applies a force to the second driving part along with the movement part to enable the driving piece to return to the initial position, so that the first driving part is separated from the first driven part, and after the second driving part drives the second driven part and reaches the driving position of the driving piece, the first driven part applies a force to the first driving part along with the movement part to enable the driving piece to return to the initial position, so that the second driving part is separated from the second driven part.

Preferably, the moving component further comprises an energy storage mechanism, wherein the energy storage mechanism stores energy in the process of driving the first driven part by the first driving part, and releases energy after the first driving part is separated from the first driven part, so that the moving component moves to the second position; and the energy storage mechanism stores energy in the process of driving the second driven part by the second driving part, and releases energy after the second driving part is separated from the second driven part so as to enable the moving part to move to the first position.

Preferably, the energy storage mechanism is provided as a compression spring and is pivotally connected to one end of the moving member by a link, and the compression spring is in a dead-centre position when the driving member reaches the driving position.

Preferably, the driving member is formed as a plate-like member, a portion of its outer contour serving as the first driving portion and another portion of its outer contour serving as the second driving portion.

Preferably, the operating assembly further comprises an actuator movable between an initial position and an actuated position, wherein the actuator urges the drive member from the initial position to the drive position during movement from the initial position to the actuated position.

Preferably, the operating assembly further comprises a transmission member pivotally connected to the driving member by a pivot provided in a guide slot as a guiding feature on the frame of the operating assembly, the guide slot extending in the direction of translation of said driving member.

Preferably, the moving part is pivotally movable about its pivot axis between a first position and a second position, and the drive member has a chute extending in the translational direction as a guiding feature, and the pivot axis of the moving part is arranged in the chute such that the drive member is translationally movable relative to the pivot axis between an initial position and a drive position.

Preferably, a line between the pivot center of the pivot shaft and the pivot center of the pivot shaft of the moving member is provided along the translational direction of the driving member.

Preferably, the transmission member is provided with a limiting arm and a driven arm; wherein during movement of the actuating member from the initial position to the actuated position, the first end of the actuating member actuates the follower arm to hold the stop arm against the driver member such that the actuating member urges the driver member from the initial position to the driven position via the transmission member.

Preferably, the first end applies a first torque about the pivot of the transmission member to the driven arm during movement of the actuation member from the initial position to the actuated position such that the spacing arm of the transmission member is held against the drive member.

Preferably, the driven arm of the transmission comprises a first profile and a second profile which is at an angle to the first profile and which is continuous, wherein the first end of the actuator is held against the first profile to apply the first torque during movement of the actuator from the initial position to the actuated position; wherein when the actuator reaches the actuated position, the first end of the actuator abuts the transition between the first profile and the second profile to apply a second torque about the pivot of the transmission, the second torque being opposite the first torque.

Preferably, the driven arm of the transmission member moves over the first end of the actuator member during the stop of the actuator member in the actuated position and the return of the drive member to the initial position.

Preferably, the first end of the actuator member moves along and away from the second profile of the transmission member during return of the actuator member from the actuated position to the initial position.

Preferably, the operating assembly further comprises a return spring capable of returning the driving member from the driving position to the initial position, the return spring being connected to the transmission member and applying a return torque to the transmission member in the same direction as the first torque.

Preferably, after the first end of the actuator member moves away from said second profile, the return spring rotates the transmission member about its pivot in said return torque direction to bring the first profile of the transmission member against the first end of the actuator member.

Preferably, the first driven portion, the second driven portion and/or the first end comprises a roller.

Preferably, the actuator comprises energy storage means which are capable of releasing energy from the actuator to move the actuator from an initial position to an actuated position.

Preferably, the energy storage device has a fixed pivot end and a movable pivot end pivotally connected to the actuator, wherein the energy storage device, when storing energy, causes the actuator to pivot from the actuated position to the initial position.

Preferably, the operating assembly further comprises a stop arranged to exert a stop effect on one of the actuator and the energy storage device to stop the actuator in its actuated position.

The invention also provides a double-power transfer switch which comprises the movable contact crank arm as a moving part and the operation assembly.

According to the invention, the free switching of the moving part between the first position and the second position can be realized by only one set of operating component mechanism through the unidirectional translational movement of the single driving piece, so that the structure is simpler, and the occupied space is less.

Drawings

FIGS. 1A and 1B are schematic views of an operating assembly according to the present invention, shown at different perspectives;

fig. 2A and 2B are schematic illustrations of different torques applied to a transmission by an actuator during operation of an operating assembly according to the present invention.

FIG. 3 is a schematic illustration of a process of moving a movable contact lever from a first position to a second position by an operating assembly according to the present invention;

FIG. 4 is a schematic illustration of the movement of the movable contact lever from the second position to the first position by the operating assembly according to the present invention;

FIG. 5 is a schematic view of the different on positions of the movable contact lever;

fig. 6A and 6B are schematic diagrams of a moving contact lever and its energy storage mechanism.

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.

According to the present invention, an operating assembly for a moving part is provided. And the invention is described hereinafter by way of example of an operating assembly for a moving contact lever in a TSE. It will be appreciated that the locking mechanism of the present invention may also be applied to any other electrical device, mechanical device, etc. including circuit breakers, relays, like moving parts.

As previously mentioned, fig. 5 shows a conventional lever 1 for a moving contact (as an example of the moving part) which can be moved between a first position and a second position (for example, corresponding to the normal position a and the standby position B shown in fig. 5, respectively), for example, with a pivoting movement about its pivot 10. The switching between the different positions of the lever 1 can be caused by, for example, a manual switching mechanism or an electric switching mechanism of the TSE or the like. In addition, the lever 1 generally comprises a charge spring 13 pivotally connected thereto. During the movement of the lever 1 from the normal position a or from the standby position B towards the intermediate position, the lever 1 charges the charge spring 13 (the spring is compressed), and when the lever 1 is in the intermediate position, the charge spring 13 is in the spring dead center position. It should be noted that although an intermediate position is described, the moving lever 1 does not stay in the intermediate position due to its inertia, but only moves between the first position and the second position without the other mechanism locking.

For example, according to one specific dual power transfer switch structure, as shown in fig. 6A and 6B, the lever 1 is implemented as a two-piece member with its pivot 10 passing through the lever 1. Also pivotally arranged on the pivot 10 are 4 links 14, pivotally connected to 4 energy storage springs 13, respectively. The energy storage spring 13 is sleeved on the spring rod 15, one end of the spring rod 15 is provided with a guide groove 151 along the longitudinal length of the spring rod 15, and one end of the connecting rod 14 is movably arranged in the guide groove 151. And a baffle may also be provided between the link 14 and the energy storage spring 13 to optimise the interaction between the link 14 and the energy storage spring 13. By setting the length of the guide groove 151, the compression and extension ranges of the spring can be limited. It should be understood that the specific forms and numbers of the crank arms 1, the connecting rods 14, the energy storage springs 13, etc. described above are merely exemplary, and may be implemented to have different numbers, configurations, and connection relationships in practical applications.

In addition, although not shown, the operating assembly further includes a frame, for example, may include a side plate, and by providing a mounting hole, a mounting groove, or the like on the side plate, various components that can be used for mounting relative fixation in the operating assembly, such as a pivot of the crank arm 1, a pivot end of the accumulator mechanism 13, a pivot of the actuator 3 described later, a pivot of the accumulator device 33, a fixed end of the return spring 24, a stopper 35, or the like. The housing may be part of a housing or frame of a dual power transfer switch.

Further, referring to fig. 1A and 1B, wherein fig. 1A is a schematic view cut in half from the middle of the operating assembly so as to clearly show the relevant components; fig. 1B is a plan view of the view of fig. 1A. As shown, the lever 1 includes a first driven portion 11 and a second driven portion 12, which may be formed, for example, as a protrusion or the like at a suitable portion of the lever 1 for being driven by the operating assembly according to the present invention. In a preferred embodiment, the first driven part 11 and the second driven part 12 each comprise a roller, which can be configured to rotate about a pivot provided on the lever 1. By providing rollers, the interaction between the driving part and the driven part can be improved, friction can be reduced, and the movement between them can be smoother.

According to a preferred embodiment of the invention, the operating assembly comprises a guide feature and a driver 2 for driving the lever 1. The drive member 2 is translatable between an initial position and a drive position (as indicated by direction a in fig. 1B) at least under the guidance of the guide features, and comprises a first drive portion 21 and a second drive portion 22. The guide features may be implemented in a variety of forms. For example, in the preferred embodiment described hereinafter, the driver 2 is provided with a slide groove 23, and the pivot shaft 10 of the lever 1 is provided in this slide groove 23, while the frame of the operating assembly is provided with a guide groove 45, and the pivot shaft 40 on the driver 2 is provided in this guide groove 45, so that a mechanism for guiding the translational movement of the driver 2 is provided, whereby both the slide groove 23 for receiving the pivot shaft 10 and the guide groove 45 for receiving the pivot shaft 40 belong to guiding features. For another example, in another embodiment, not shown, it is possible to simply provide one of the projections or channels extending in the direction of translation on the driving member 2, while the other of the corresponding channels or projections is provided on the frame, so that by means of the cooperation between the projection extending in the direction of translation and the channel (both belonging to the guiding feature), the translational movement of the driving member 2 can be limited in the direction of translation a. Thus, in accordance with the principles of the present invention, those skilled in the art will also recognize that other guiding features for guiding translational movement of the driver 2 may be provided in a variety and number of locations without departing from the scope of the present invention. In addition, the guide features may also be used to support the driver 2.

According to the present invention, when the lever 1 is in the first position, the first driving part 21 drives the first driven part 11 by the movement of the driving member 2 from the initial position to the driving position to move the lever 1 from the first position toward the second position; when the lever 1 is in the second position, the second driving portion 22 drives the second driven portion 12 by the movement of the driver 2 from the initial position to the driving position to move the lever 1 from the second position toward the first position.

According to the present invention, since the positions of the lever 1 in the first position and the second position are different, the positions of the first driven portion 11 and the second driven portion 12 are also changed accordingly, and thus by properly setting the positions of the first driven portion 11 and the second driven portion 12 on the lever 1, it is possible to realize a state in which the lever 1 is to be driven by different driven portions when in different positions. For example, when the lever 1 is in the first position, the first driven portion 11 and the first driving portion 21 are close to each other and the second driven portion 12 and the second driving portion 22 are distant from each other; when the lever 1 is in the second position, the first driven portion 11 and the first driving portion 21 are away from each other and the second driven portion 12 and the second driving portion 22 are close to each other. It will be appreciated that with such "close" and "far" arrangements, during a single switch, only the drive and driven portions that are close to each other will interact, but the drive and driven portions that are "far" from each other will not interact, so that when the lever 1 is in either position, the driver 2 can drive the respective driven portions only by unidirectional movement towards the drive position, so that the lever 1 moves towards the other position.

Compared with the complex prior art that two sets of driving devices are respectively arranged for the movement towards two positions or a complex bidirectional driving mechanism is arranged in one set of driving device, the invention can realize the two-position driving of the crank arm 1 by only arranging a single driving piece capable of carrying out unidirectional movement. It should be understood that the "unidirectional movement" as described herein is that the driving direction of the driving member is unidirectional, but that the driving member may still return to the original position.

The specific structure of each component and the like in a preferred embodiment of the operation assembly according to the present invention will be described below.

As previously mentioned, the driver 2 may for example comprise a chute 23 which extends in the translational direction and which may be formed by two fork-like extensions 25 extending from the body of the driver 2. The extension of the fork-like extension 25 is in the direction of translation a of the driver 2. The pivot 10 of the lever 1 is arranged in this slide groove 23, so that the driver 2 is supported by the pivot 10 via the slide groove 23 for a translational movement relative to the pivot 10 between the initial position and the driving position. Since the driver 2 is arranged on the lever 1, the driver 2 will not disengage from the lever 1 all the time during operation of the driver 2, thereby ensuring a smooth operation of the whole assembly. Moreover, by making the driving member 2 perform a translational movement (i.e. driving the lever 1 in a translational manner), the travel of the relevant moving member can be optimized, further reducing the dimensions of the relevant member, making the operating assembly more compact.

It is further preferable that the arrangement positions of the first driven portion 11 and the second driven portion 12 are also optimized, for example, in a state where the compression spring of the energy stocking mechanism 13 is at the dead point position (see stage ii of fig. 3), the first driven portion 11 and the second driven portion 12 are symmetrically arranged on both sides of the pivot shaft 10 with respect to the axis passing through the pivot center of the pivot shaft 10 and in the translational direction a.

The drive element 2 is preferably formed as a plate-shaped element, a part of its outer contour (or outer edge) being used as a first drive 21 and another part of its outer contour being used as a second drive 22. The driving member 2 may also be implemented in other shapes or structures according to the principle of the present invention, for example, may be formed in a rod shape or a block shape, and may include protruding portions as a first driving portion and a second driving portion, additional mounting members, and the like.

The power source of the driving member 2 may take a variety of forms. For example, an additional electric device can be provided for the drive element 2 simply to bring about a translation of the drive element 20. Alternatively, the driving member 2 may be actuated by an actuating member 3 described later, for example.

Further preferably, the driving member 2 may further include a return spring (not shown) that returns the driving member 2 from the driving position to the initial position. The return spring may be provided at any suitable location of the driver 2, for example, to assist in resetting the driver 2 when the power urging the movement of the driver 2 is removed.

Further preferably, the invention proposes to cause the movement of the driving member 2 from the initial position towards the driving position by means of an actuating member 3 as shown. In particular, the actuator 3 is arranged to be movable between an initial position and an actuated position, whereby the actuator 3 preferably also has the feature of unidirectional movement. The actuator 3 moves the driver 2 from the initial position to the driving position during the movement from the initial position to the actuating position. It will be appreciated that the unidirectional movement of the actuator 3 may also be a rotational movement or a translational movement. In the preferred embodiment shown in the drawings, the actuator 3 is embodied as a curved rod-shaped member having an end 31 facing the driver 2 and being rotatable about its pivot 30. Preferably, the end 31 may also be configured to include a roller.

The actuating member 3 may for example apply an actuating force directly to the driving member 2 to translate the driving member 2. In a preferred embodiment according to the invention, the actuation of the driving element 2 by the actuating element 3 is achieved by providing a transmission element 4.

In particular, the transmission element 4 can be embodied in a pivotal connection with the driving element 2 via a pivot 40. The pivot 40 may be provided on the driving member 2, for example, as a shaft integrally formed with the driving member 2 or as a shaft passing through a corresponding hole in the driving member 2, and the driving member 4 includes a pivot hole for inserting the shaft. Alternatively, the pivot 40 may be a shaft integrally formed with the driving member 4 or a shaft passing through a corresponding hole in the driving member 4 and inserted into a pivot hole in the driving member 2.

It is further preferred that the line between the pivot center of the pivot 40 of the transmission element 4 and the pivot center of the pivot 10 of the lever 1 is arranged along the translation direction a of said driving element 2, so as to optimize the transmission of the actuating force from the actuating element 3.

In a preferred embodiment according to the present invention, the driving member 2 and the transmitting member 4 are formed to have pivot holes (as shown in fig. 1A) for insertion of the pivot shaft 40 (as shown in fig. 1B). Further, the pivot 40 is disposed in a guide slot 45 in the frame of the operating assembly, as shown in phantom in fig. 1B. The guide groove 45 may be formed, for example, on a frame side plate (not shown) for accommodating the operating assembly. The direction of extension of the guide groove 45 is parallel to the direction of translation a of the driving member 2. And when the driving member 2 and the actuating member 3 are both located at the respective initial positions, the pivot shaft 40 is located at the end (right end in fig. 1B) of the guide groove 45 so as to be restrained by the end.

Preferably, the transmission 4 may also have a stop arm 41 and a follower arm 42. Further, during movement of the actuator 3 from the initial position to the actuated position, the first end 31 of the actuator 3 actuates the follower arm 42 to hold the limiter arm 41 against the driver 2, whereby the actuator 3 urges the driver 2 from the initial position to the driven position via the transmission 4. With this arrangement, the stop arm 41 is held against the driving member 2 during actuation, the driving member 2 and the transmission member 4 forming a whole for movement in the translational direction a. Specifically, the driving member 2 may be formed to have an abutted portion, which may be, for example, a slope inclined with respect to the translational direction a, so that the stopper arm 41 is stably abutted against the abutted portion.

It is further preferred that during movement of the actuator 3 from the initial position to the actuated position, the first end 31 applies a first torque about the pivot 40 (clockwise torque as shown by the arrow in fig. 2A) to the driven arm 42 such that the retaining arm 41 of the transmission 4 is held against the driver 2, thereby ensuring that the actuator 3 transmits an actuating force to the driver 2 via the transmission 4.

Further preferably, as shown in fig. 2A and 2B, the driven arm 42 of the transmission 4 may comprise a first profile 421 and a second profile 422 that is at an angle to and continues from the first profile 421. The first profile 421 and the second profile 422 are preferably formed as straight-sided profiles, or may also be formed as arcuate profiles. The transition between the first profile 421 and the second profile 422 may be provided as rounded corners. Further, by setting the shape and orientation of the first profile 421, the first end 31 of the actuator 3 can be caused to apply the first torque as described above to the first profile 421. The interaction between the first end 31 of the actuator 3 and the first profile 421 and the second profile 422 of the transmission member 4 will be further described in connection with the operation of the operating assembly.

As previously described, the driving member 2 may be reset by a reset spring. In the preferred embodiment shown in the drawings, the operating assembly according to the invention may comprise a return spring 24 which is connected to the transmission member 4, for example to the end of a spring arm 43 extending from the transmission member 4, and which applies a return torque to the transmission member 4 in the same direction as the first torque, so that the transmission member 4 may also to some extent be urged reliably against the driving member 2.

The return spring 24 may be stretched during the movement of the actuating member 3 to urge the actuating member 2 towards the actuated position and return the actuating member 2 to its initial position when the return spring 24 releases its elastic potential energy. Although the return spring 24 is not directly connected to the driving member 2, the force of the return spring 24 can be transmitted to the driving member 2 through the transmission member 4 pivotally connected to the driving member 2 to return the driving member 2.

Preferably, two sub-components (one of which is shown in the semi-cut view of fig. 1A) constituting the actuator 3 may be provided on both sides of the transmission member 4, the first end 31 of the actuator 3 comprising a roller between the two sub-components.

According to the invention, the actuating member 3 may be caused to exert an actuating action on the driving member 2 by any suitable means or mechanism. For example, an electromotive device can be used simply for the actuator 3 in order to rotate the actuator 3 between the initial position and the actuating position.

According to a preferred embodiment of the invention, the actuator 3 may comprise energy storage means 33 which are able to release energy to the actuator 3 to move the actuator 3 from the initial position to the actuated position. The energy storage device 33 may be operated by an external mechanism, not shown, which is typically actively operated by a user. In particular, the energy storage means 33 may comprise, for example, a compression spring. The energy storage device 33 may have a fixed pivot end 331 and a movable pivot end 332 pivotally connected to the actuator 3. The movable pivot end 332 may be directly pivotally connected to a suitable location of the actuator 3, such as at a second end 32 of the actuator 3 opposite the first end 31, as shown.

With this construction, the energy storage device 33 can drive the actuator 3 from the actuated position to the initial position when energy is stored, and the energy storage device 33 can drive the actuator 3 from the initial position to the actuated position when energy is released. The functional relationship between the energy storage device 33 and the actuator 3 will be described later in connection with the operation of the operating assembly.

Furthermore, the operating assembly according to the invention may further comprise a stop member 35 arranged to exert a stop effect on one of the actuator member 3 and the energy storage device 33 to stop the actuator member 3 in its actuated position. In the preferred embodiment shown in the figures, the stop 35 is embodied as a pin against which the second end 32 of the actuator 3 will abut when the actuator position is reached and stop in the actuated position, from which the actuator 3 will not return to the initial position until the energy storage means 33 of the actuator 3 are operated by an external mechanism.

The operation of the operating assembly according to the present invention is described below in connection with the staged illustrations of fig. 3 and 4.

Referring to stage I shown in fig. 3, before the operating assembly begins to operate, the lever 1 is in the first position and the energy storage device 33 of the actuator 3 is in the stored energy state (i.e. the compression spring is in the compressed state). From this state, if the energy storage device 33 is de-energized (e.g. according to an active operation by the user), the energy storage device 33 will simultaneously rotate and its compression spring will extend. The actuator 3, which is pivotally connected to the energy storage means 33, will rotate counter-clockwise from the initial position towards the actuated position. The actuator 3 will then push the driven arm 42 of the transmission member 4 through its first end 31, i.e. on the first profile 421. The stop arm 41 of the transmission member 4 is held against the driving member 2 due to the effect of the first torque as described above, thereby pushing the driving member 2 through the transmission member 4 to translate from the initial position towards the driving position. The return spring 24 connected to the spring arm 43 of the transmission 4 will also be stretched. As shown in this stage I, the first driving portion 21 of the driver 2 is located close to the first driven portion 11 of the lever 1.

See stage II of fig. 3. From stage I to stage II, as the actuator 3 rotates under the pushing of the energy storage device 33, the first driving portion 21 of the driver 2 pushes the first driven portion 11, so that the lever 1 further rotates, and the rotation of the lever 1 also causes the energy storage mechanism 13 thereof to store energy (i.e. the compression spring is compressed). To the state shown in this phase II, the relevant components are in the following states:

the first driving part 21 of the driving member 2 has completed driving the crank arm 1, and the driving member 2 reaches the driving position, and at this time, the second driving part 22 of the driving member 2 also reaches a position close to the second driven part 12;

the compression spring of the energy storage mechanism 13 of the crank arm 1 is in the under dead point position (i.e. has not yet reached the true spring dead point position), thereby ensuring that the crank arm 1 cannot rotate further as the crank arm 1 reaches the spring dead point while the driver 2 reaches the driving position;

the actuator 3 reaches the actuated position and the actuator 3 can stay in this actuated position temporarily without returning to the initial position (the return of the actuator 3 will depend on when its energy storage means 33 is operated by an external mechanism); the first end 31 of the actuator 3 disengages from the first profile 421 of the driven arm 42 of the transmission 4 and moves onto the transition between its first profile 421 and second profile 422; with further reference to fig. 2B, in this state, the first end 31 will exert a second torque (counterclockwise torque as indicated by the arrow in fig. 2B) about the pivot 40 of the transmission 4, and the second torque is opposite to the first torque.

See stage III of fig. 3. Since the crank arm 1 always moves under the drive of the driving member 2 from stage I to stage II, even if the driving member 2 has reached the driving position, the moving crank arm 1 can still move under the inertia effect thereof, and after the first driving portion 21 is separated from the first driven portion 11, the spring dead point of the energy storage mechanism 13 passes, and the energy storage mechanism 13 releases its elastic potential energy after passing the dead point, further pushing the crank arm 1 to rotate toward the second position.

With further rotation of the lever 1, the second driven portion 12 thereof will exert a force on the second driving portion 22 of the driving member 2 to urge the driving member 2 to translate from the driving position back to the initial position. At the same time, due to the action of the second torque as described above, the first end 31 of the actuator 3 will disengage from the transition between the first profile 421 and the second profile 422 after a slight counter-clockwise rotation of the transmission member 4, so that the movement of the transmission member 4 and the drive member 2 connected thereto in the return direction (i.e. in the direction of the arrow in stage iii of fig. 3) is not hindered. And at the same time as the driver 2 pushes the driver 4 towards the initial position, the return spring 24 will contract, whereby the return spring 24 pulls the driver 4 further and the driver 2 back towards the initial position via the spring arm 43 of the driver 4. During this process, the second profile 422 of the follower arm 42 of the transmission member 4 is held against the first end 31 of the actuator member 3 and moves thereon (to the right in the orientation of the drawing). By the end of this phase III, the driving element 2 returns to the initial position and the lever 1 reaches the second position, thus completing the switching of the double power transfer switch from the normal position to the standby position.

Stage IV of fig. 3 mainly relates to the energy storage operation of the energy storage device 33 of the actuator 3. Specifically, the energy storing means 33 of the actuator 3 may be operated by an external mechanism, not shown, to compress its compression spring again, while the energy storing means 33 will rotate counterclockwise, and thus the actuator 3 pivotally connected thereto will rotate clockwise towards its initial position; during the rotation of the actuator 3, the first end 31 thereof remains in contact with the second profile 422 of the follower arm 42 of the transmission 4 and moves with respect to this second profile 422 until the first end 31 of the follower 3 breaks away from the second profile 422 when the actuator member 3 returns to its initial position. The return spring 24 then further contracts, causing the transmission member 4 to rotate about its pivot 40 in the direction of the return torque, so that the first contour 421 of the transmission member 4 again abuts against the first end 31 of the actuating member 3, and the stop arm 41 of the transmission member 4 again abuts against the driving member 2. So far, the parts of the operating assembly have returned to their respective initial positions and are ready for the switching operation of the lever 1 from the second position towards the first position.

Fig. 4 shows the switching of the lever 1 from the second position into the first position under the operation of the operating assembly according to the invention. Thus, following the stage numbering of fig. 3, the process of fig. 4 is labeled stage IV, stage V, stage VI, stage VII.

Due to the "single driving member-unidirectional movement" feature of the present invention, the operation mode of the operation assembly during the switching process of fig. 4 is different only in the driving stage of the driving member 2 on the crank arm 1, except for the state of the crank arm 1, which is different from that of fig. 3, compared with the operation process shown in fig. 3. And at the end of the operating procedure shown in fig. 4 (stage VII), the lever 1 and the operating assembly also return to the same state as stage I in fig. 3.

The operation procedure shown in fig. 4 is briefly described below, and the description of the same is simplified as that in fig. 3.

In particular, starting from phase IV of fig. 4, if the energy storage means 33 is de-energized, the actuator 3 pivotally connected thereto will also rotate counter-clockwise from the initial position towards the actuated position. The actuator 3 will then push the driving member 2 through the transmission member 4 from the initial position towards the driving position in a translational movement. The second driving part 22 of the driving element 2 is located close to the second driven part 12 of the pushing lever 1.

See stage V of fig. 4. From stage IV to stage V, with the rotation of the actuator 3, the second driving portion 22 of the driver 2 pushes the second driven portion 12 to further rotate the lever 1, and the energy storage mechanism 13 thereof stores energy. To the state shown in this phase V, the relevant components are in the following states:

The second driving part 22 of the driving member 2 has completed driving the crank arm 1, the driving member 2 reaches the driving position, and the first driving part 21 of the driving member 2 also reaches a position close to the first driven part 11;

the compression spring of the energy storage mechanism 13 of the crank arm 1 is at a dead-point position;

the actuator 3 reaches an actuated position and the actuator 3 can temporarily stay in the actuated position without returning to the initial position; the first end 31 of the actuator 3 disengages the first profile 421 and moves onto the transition between the first profile 421 and the second profile 422 to apply the second torque.

See stage VI of fig. 4. Since the moving crank arm 1 continues to move under the inertia effect, after the first driving part 21 is separated from the first driven part 11, the spring dead point of the energy storage mechanism 13 is passed, and the energy storage mechanism 13 further pushes the crank arm 1 to rotate towards the first position after passing the dead point.

With further rotation of the lever 1, the first driven part 11 thereof will exert a force on the first driving part 21 of the driving member 2 to urge the driving member 2 to translate from the driving position back to the initial position. At the same time, the first end 31 of the actuator 3 is disengaged from the transition between the first profile 421 and the second profile 422, thanks to the action of the second torque as described above, the return spring 24 pulls the transmission member 4 and the driving member 2 back towards the initial position. During this process, the second profile 422 of the driven arm 4 of the transmission member 4 is held against the first end 31 of the actuating member 3 and moves thereon. By the end of this phase VI, the driving member 2 returns to the initial position and the lever 1 reaches the first position, thus completing the switching of the double power transfer switch from the standby position to the normal position.

Stage VII of fig. 4 also mainly relates to the energy storage operation of the energy storage device 33 of the actuator 3. Briefly, the energy storage means 33 of the actuator 3 can store energy again, the actuator 3 is rotated clockwise towards its initial position until, when the actuator 3 returns to its initial position, its first end 31 is disengaged from the second contour 422, after which the return spring 24 is further contracted, causing the transmission 4 to rotate in the direction of the return torque, so that the first contour 421 of the transmission 4 again abuts against the first end 31 of the actuator 3, and the stop arm 41 of the transmission 4 again abuts against the driver 2. So far, the components of the operating assembly have been returned to the initial position (the same as the phase I state in fig. 3) and are ready for the switching operation of the lever 1 from the first position towards the second position.

The exemplary implementation of the present disclosure has been described in detail hereinabove with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and adaptations to the specific embodiments described above may be made and that various combinations of the technical features and structures set forth in the present disclosure may be practiced without departing from the scope of the present disclosure, which is defined in the appended claims.

Claims

1. An operating assembly for operating a moving member movable between a first position and a second position and comprising a first driven portion (11) and a second driven portion (12), the operating assembly comprising:

a guide feature;

a drive (2) which is translationally movable between an initial position and a drive position at least under the guidance of the guide feature and comprises a first drive (21) and a second drive (22);

wherein when the moving member is in the first position, the first driving part (21) drives the first driven part (11) by the movement of the driving member (2) from the initial position to the driving position so as to move the moving member from the first position toward the second position; and

wherein when the moving member is in the second position, the second driving part (22) drives the second driven part (12) by the movement of the driving member (2) from the initial position to the driving position, so that the moving member moves from the second position toward the first position.

2. The operating assembly of claim 1, wherein,

when the moving member is in the first position, the first driven portion (11) and the first driving portion (21) are close to each other and the second driven portion (12) and the second driving portion (22) are distant from each other, and

When the moving member is in the second position, the first driven portion (11) and the first driving portion (21) are away from each other and the second driven portion (12) and the second driving portion (22) are close to each other.

3. An operating assembly according to claim 1, wherein the driving member (2) is arranged to:

after the first driving part (21) drives the first driven part (11) and reaches the driving position of the driving piece (2), the second driven part (12) applies a force to the second driving part (22) along with the movement of the moving part towards the second position so as to promote the driving piece (2) to return to the initial position, thereby the first driving part (21) is separated from the first driven part (11), and

after the second driving part (22) drives the second driven part (12) and reaches the driving position of the driving piece (2), the first driven part (11) applies a force to the first driving part (21) along with the movement of the moving part towards the first position so as to promote the driving piece (2) to return to the initial position, and thus the second driving part (22) is separated from the second driven part (12).

4. The operating assembly of claim 3, wherein,

the moving part further comprises an energy storage mechanism (13), wherein,

the energy storage mechanism (13) stores energy in the process of driving the first driven part (11) by the first driving part (21), and after the first driving part (21) is separated from the first driven part (11), the energy storage mechanism (13) releases energy so as to enable the moving part to move to the second position; and

The energy storage mechanism (13) stores energy in the process that the second driving part (22) drives the second driven part (12), and after the second driving part (22) is separated from the second driven part (12), the energy storage mechanism (13) releases energy so as to enable the moving part to move to the first position.

5. An operating assembly according to claim 4, wherein the energy storage mechanism (13) is provided as a compression spring and is pivotally connected to one end of the moving part by a link, and the compression spring is in a dead-centre position when the drive member (2) reaches the drive position.

6. An operating assembly according to claim 1, wherein the driving member (2) is formed as a plate-like member, a part of its outer contour serving as the first driving portion (21) and another part of its outer contour serving as the second driving portion (22).

7. The operating assembly according to any one of claims 1-6, further comprising an actuator (3) movable between an initial position and an actuated position,

wherein the actuator (3) urges the driver (2) from the initial position to the driving position during movement from the initial position to the actuated position.

8. The operating assembly according to claim 7, further comprising a transmission member (4) pivotally connected to the driving member (2) by a pivot (40) arranged in a guide slot (45) as a guiding feature on the frame of the operating assembly, which guide slot extends in the direction of translation of the driving member (2).

9. An operating assembly according to claim 8, wherein the moving part is pivotally movable about its pivot (10) between a first position and a second position, and the drive member (2) has a chute (23) extending in the translational direction as a guiding feature, and the pivot (10) of the moving part is arranged in the chute (23) such that the drive member (2) is translationally movable relative to the pivot between an initial position and a drive position.

10. An operating assembly according to claim 9, wherein the line between the pivot centre of the pivot (40) and the pivot centre of the pivot (10) of the moving part is arranged along the translation direction of the driving member (2).

11. The operating assembly of claim 8, wherein the transmission member (4) has a limit arm (41) and a driven arm (42);

wherein, during the movement of the actuating member (3) from the initial position to the actuated position, the first end (31) of the actuating member (3) actuates the driven arm (42) to hold the limit arm (41) against the driving member (2), so that the actuating member (3) urges the driving member (2) from the initial position to the driving position via the transmission member (4).

12. An operating assembly according to claim 11, wherein the first end (31) applies a first torque about the pivot (40) of the transmission member (4) to the driven arm (42) during movement of the actuating member (3) from the initial position to the actuated position, such that the limit arm (41) of the transmission member (4) is held against the driving member (2).

13. An operating assembly as claimed in claim 12, wherein the driven arm (42) of the transmission (4) comprises a first profile (421) and a second profile (422) at an angle to and continuing from the first profile (421),

wherein during movement of the actuator (3) from the initial position to the actuated position, the first end (31) of the actuator (3) is held against said first profile (421) to apply said first torque;

wherein, when the actuator (3) reaches the actuated position, the first end (31) of the actuator (3) abuts against a transition between said first profile (421) and said second profile (422) to exert a second torque about the pivot (40) of the transmission (4), and which is opposite to the first torque.

14. An operating assembly according to claim 13, wherein the driven arm (42) of the transmission member (4) moves over the first end (31) of the actuator member (3) during the stop of the actuator member (3) in the actuated position and the return of the drive member (2) to the initial position.

15. An operating assembly according to claim 14, wherein the first end (31) of the actuator (3) moves along the second contour (422) of the transmission member (4) and away from the second contour (422) during the return of the actuator (3) from the actuated position to the initial position.

16. An operating assembly according to claim 15, further comprising a return spring (24) which enables the driving member (2) to return from the driving position to the initial position, the return spring being connected to the transmission member (4) and exerting a return torque on the transmission member (4) in the same direction as the first torque.

17. An operating assembly according to claim 16, wherein after the first end (31) of the actuator (3) moves away from said second contour (422), the return spring (24) rotates the transmission member (4) about its pivot (40) in said return torque direction to bring the first contour (421) of the transmission member (4) against the first end (31) of the actuator (3).

18. The operating assembly of claim 11, wherein the first driven portion (11), the second driven portion (12) and/or the first end (31) comprises a roller.

19. An operating assembly according to claim 7, wherein the actuating member (3) comprises energy storage means (33) which are capable of releasing energy to the actuating member (3) to move the actuating member (3) from the initial position to the actuated position.

20. The operating assembly according to claim 19, wherein the energy storage device (33) has a fixed pivot end (331) and a movable pivot end (332) pivotally connected to the actuator (3), wherein the energy storage device (33) when storing energy brings the actuator (3) to pivot from the actuated position to the initial position.

21. An operating assembly according to claim 19, further comprising a stop member (35) arranged to exert a stop effect on one of the actuator member (3) and the energy storage device (33) to stop the actuator member (3) in its actuated position.

22. A dual power transfer switch comprising a moving contact lever as a moving part and an operating assembly as claimed in any one of claims 1 to 21.