CN217690863U - Position indicating mechanism of double-power-supply change-over switch and double-power-supply change-over switch - Google Patents

Abstract

Disclosed is a position indicating mechanism of a dual power transfer switch, comprising: the driving disc is arranged to be rigidly connected with a moving contact of the dual-power transfer switch and is provided with a first driving part and a second driving part; the driven disc is provided with a first driven part corresponding to the first driving part and a second driven part corresponding to the second driving part, and has a first closing indication position, a second closing indication position and a closing indication position, the first driven part enables the driven disc to rotate from the closing indication position to the first closing indication position under the action of the first driving part, and the second driven part enables the driven disc to rotate from the closing indication position to the second closing indication position under the action of the second driving part; a first elastic reset member configured to reset the driven disc from a first closing indication position to an opening indication position; and the second elastic resetting component is arranged to reset the driven disc from the second closing indicating position to the opening indicating position. A dual power transfer switch is also disclosed that includes such a position indicating mechanism.

Description

Position indicating mechanism of double-power-supply change-over switch and double-power-supply change-over switch

Technical Field

The utility model relates to a dual power change over switch's position indication mechanism and dual power change over switch including it.

Background

The position indication is an important safety function module of the dual power transfer switch. For a three-position dual-power transfer switch product, the position indication indicates the contact position state of the switch to a user, such as S1 closing or S2 closing or OFF position. The correct position indication is important for the operation of the switch, which now has an isolating function, for example when the switch is in the OFF position, and the user can padlock and service the relevant equipment. If the indication is not accurate at this time, the switch is actually in the S1 or S2 on position, and the indication is directed to the OFF position, which is a great safety risk for the user.

There is a need for a resettable indicating mechanism that directly drives a position indicator from the output of a dual power transfer switch, and the output of the dual power transfer switch is rigidly connected to a movable contact, and that has a reliable closing position indication when S1 and S2 are closed, and that maintains an intermediate equilibrium position in the OFF position indicator under the action of the reset.

SUMMERY OF THE UTILITY MODEL

For this reason, according to the utility model discloses an aspect provides a position indication mechanism of dual power change-over switch, and it includes: a frame fixedly arranged; the driving disc is arranged to be rigidly connected with the moving contact of the dual-power transfer switch and is provided with a first driving part and a second driving part which are spaced from each other and are arranged oppositely; the driven disc is pivotally arranged on the rack and provided with a first driven part corresponding to the first driving part and a second driven part corresponding to the second driving part, the driven disc is provided with a first closing indication position, a second closing indication position and a switching-off indication position, the first driven part enables the driven disc to rotate from the switching-off indication position to the first closing indication position under the action of the first driving part, and the second driven part enables the driven disc to rotate from the switching-off indication position to the second switching-on indication position under the action of the second driving part; a first elastic resetting member connected between the driven disc and the frame and configured to reset the driven disc from the first closing indicating position to the opening indicating position; and the second elastic resetting component is connected between the driven disc and the rack and is used for resetting the driven disc from the second closing indicating position to the opening indicating position.

According to various embodiments of the present invention, the proposed position indication mechanism of the dual power transfer switch may comprise one or more of the following further developments.

In some embodiments, the driven plate is further provided with a first closing indication part indicating the first closing indication position, a second closing indication part indicating the second closing indication position, and an opening indication part indicating the opening indication position.

In some embodiments, the driven disc includes a driven plate and an indicating plate rotating together, the first driven part and the second driven part are disposed on the driven plate, the first closing indicating part, the second closing indicating part and the opening indicating part are disposed on the indicating plate, and the opening indicating part is located between the first closing indicating part and the second closing indicating part.

In some embodiments, the first and second resilient return members are connected in an opposing manner between the frame and the indicator panel.

In some embodiments, the first and second elastic return members are configured to be equally pre-tensioned in the opening indication position.

In some embodiments, the first resilient return member is arranged to store potential energy during rotation of the driven disc from the opening indicating position to the first closing indicating position; the second elastic reset member is configured to store potential energy during rotation of the driven disc from the opening indicating position to the second closing indicating position.

In some embodiments, the first driving part is disposed to abut against the first driven part at the first closing indication position to resist a reset force of the first elastic reset member; the second driving part is disposed to abut against the second driven part at the second closing indication position to resist a reset force of the second elastic reset member.

In some embodiments, the first drive portion is a first circumferential face of a first protrusion that protrudes relative to the main body portion of the drive plate; the second drive portion is a second circumferential surface of a second protrusion protruding with respect to the main body portion of the drive plate.

In some embodiments, the first driven portion is a first lobe projecting relative to a body plate of the driven disk; the second driven portion is a second lobe protruding with respect to a main body plate of the driven disk.

In some embodiments, in the opening indication position, the first driven part and the second driven part are located between the first driving part and the second driving part, and a gap is formed between the first driving part and the first driven part and/or a gap is formed between the second driving part and the second driven part.

In some embodiments, the drive plate is rigidly connected to the movable contact by a shaft passing through the drive plate and a rotational axis of the movable contact.

In some embodiments, the driving disc is provided with a first stopper and a second stopper, and the frame is provided with a first cooperating stopper and a second cooperating stopper, the first stopper cooperating with the first cooperating stopper to stop the driving disc from pivoting in a first direction, and the second stopper cooperating with the second cooperating stopper to stop the driving disc from pivoting in a second direction opposite to the first direction.

In some embodiments, the driven disc is provided with a third stopping portion and a fourth stopping portion, the frame is provided with a third matching stopping portion and a fourth matching stopping portion, the third stopping portion is matched with the third matching stopping portion to stop the driven disc from pivoting from the opening indicating position to the first closing indicating position, and the fourth stopping portion is matched with the fourth matching stopping portion to stop the driven disc from pivoting from the opening indicating position to the second closing indicating position.

According to the utility model discloses a another aspect provides a dual power transfer switch, and it includes moving contact and as above position indication mechanism, the moving contact can follow position indication mechanism's driving-disc pivot is in order to have first on position, second on position and branch floodgate position.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present disclosure and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings may be obtained from the drawings without inventive effort. In the drawings:

fig. 1 shows a schematic perspective view of a position indication mechanism of a dual power transfer switch according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a position indication mechanism of a dual power transfer switch according to an embodiment of the present invention from another direction;

fig. 3-5 are schematic diagrams illustrating a process of the position indication mechanism of the dual power transfer switch when the dual power transfer switch is switched from the open position to the second closed position according to an embodiment of the present invention, wherein fig. 5 shows the position indication mechanism when in the second closed position;

fig. 6 shows a schematic diagram of a position indication mechanism of a dual power transfer switch in the process of switching the dual power transfer switch from a second on position to an off position according to an embodiment of the present invention.

List of reference numbers:

10. position indicating mechanism

100. Frame

110. Rotating shaft

120. Convex pin

200. Driving disc

201. First stop part

202. Second stop part

210. A first protrusion

211. A first drive part

220. Second protrusion

221. A second drive part

240. Main body part

250. Shaft

300. Driven plate

301. Third stop part

302. Fourth stop part

310. First lobe

311. A first driven part

320. Second convex angle

321. Second driven part

340. Main board

370. Driven part

380. Indicating board

381. First closing indication part

382. Second closing indication part

383. Brake-off indicating part

400. First elastic reset component

500. Second elastic reset component

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Hereinafter, a position indication mechanism of a dual power transfer switch according to an embodiment of the present disclosure is described in detail with reference to the drawings. To make the objects, technical solutions and advantages of the present disclosure more apparent, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure, and it is to be understood that the described embodiments are some, but not all embodiments of the present disclosure.

Thus, the following detailed description of the embodiments of the present disclosure, presented in connection with the drawings, is not intended to limit the scope of the disclosure, as claimed, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

The singular forms include the plural unless the context otherwise dictates otherwise. Throughout the specification, the terms "comprises," "comprising," "has," "having," "includes," "including," "having," "including," and the like are used herein to specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

In addition, even though terms including ordinal numbers such as "first", "second", etc., may be used to describe various elements, the elements are not limited by the terms, and the terms are used only to distinguish one element from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the scope of the present disclosure.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally placed when the disclosed products are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used merely for convenience of describing and simplifying the present disclosure, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present disclosure.

As shown in fig. 1-6, according to one aspect of the present invention, a position indicating mechanism 10 for a dual power transfer switch is provided. More specifically, the dual power transfer switch may include a movable contact (not shown), and the movable contact may be switched to: a first on position to be connected to a first power source, a second on position to be connected to a second power source, and an off position to be disconnected from both the first power source and the second power source. The position indicating mechanism 10 provided by the present invention is used to correctly and effectively indicate which of the first switch-on position, the second switch-on position and the switch-off position the dual power transfer switch is in.

According to some embodiments of the present invention, as shown in fig. 1 to 6, the position indicating mechanism 10 for dual power transfer switch provided by the present invention may include a fixedly disposed frame 100, a driving disc 200 and a driven disc 300 pivotably disposed with respect to the frame 100, and a first elastic reset member 400 and a second elastic reset member 500 connected between the driven disc 300 and the frame 100. It should be noted that when the position indicating mechanism 10 is used in a dual power transfer switch, the fixedly disposed housing 100 may be part of a dual power transfer switch housing. Wherein the driven plate 300 is provided to be able to have a first closing indication position, a second closing indication position, and an opening indication position. More specifically, a first closing indication position of the driven board 300 corresponds to a first closing position of the dual power transfer switch, a second closing indication position of the driven board 300 corresponds to a second closing position of the dual power transfer switch (as shown in fig. 5), and a closing indication position of the driven board 300 corresponds to a closing position of the dual power transfer switch (as shown in fig. 1). Wherein, the driving disc 200 is configured to switch the driven disc 300 from the opening indicating position to the first closing indicating position or the second closing indicating position, the first elastic resetting member 400 is configured to reset the driven disc 300 from the first closing indicating position to the opening indicating position, and the second elastic resetting member 500 is configured to reset the driven disc 300 from the second closing indicating position to the opening indicating position.

More specifically, the utility model provides a driving-disc 200 is constructed and is connected with dual power transfer switch's moving contact rigid coupling to can drive the moving contact and switch over corresponding rotation often between first closing position, second closing position and separating brake position. In an alternative embodiment, as shown, the drive plate 200 is rigidly connected to the movable contact by a shaft 250 passing through the drive plate 200 and a rotating shaft (not shown) of the movable contact. It should be noted that such a rigid connection is merely illustrative and not restrictive, and the driving disk 200 may be rigidly connected to the movable contacts in any feasible other manner to carry the movable contacts together. In addition, as shown in the figure, the driving disc 200 is provided with a first driving part 211 and a second driving part 221 which are spaced apart from and opposite to each other, and the driven disc 300 is provided with a first driven part 311 corresponding to the first driving part 211 and a second driven part 321 corresponding to the second driving part 221, so that when the driving disc 200 rotates from the opening position to the first closing position or the second closing position with the movable contact, the first driving part 211 of the driving disc 200 can act on the first driven part 311 to rotate the driven disc 300 from the opening indication position to the first closing indication position, or correspondingly, the second driving part 221 of the driving disc 200 can act on the second driven part 321 to rotate the driven disc 300 from the opening indication position to the second closing indication position.

In some embodiments, as shown in fig. 1-6, drive disc 200 may include a main body portion 240, with main body portion 240 being, for example, in the form of a cam disc, and including first and second projections 210, 220 projecting relative to main body portion 240 and angled relative to one another in a circumferential direction, with first and second circumferential surfaces of first and second projections 210, 220 facing one another in the circumferential direction forming first and second drive portions 211, 221, respectively. In a more specific embodiment, the driven disk 300 includes a main body plate 340 and first and second lobes 310 and 320 extending from the main body plate 340, the first and second lobes 310 and 320 forming first and second driven portions 311 and 321, respectively.

In some embodiments, as shown in fig. 1, in the opening indicating position, the first driven part 311 and the second driven part 321 of the driven disc 300 are located between the first driving part 211 and the second driving part 221 of the driving disc 200, and a gap is provided between the first driving part 211 and the first driven part 311 and/or a gap is provided between the second driving part 221 and the second driven part 321, so as to prevent the first driven part 311 and the second driven part 321 from being jammed between the first driving part 211 and the second driving part 221 and being unable to be driven.

Therefore, when the driving disk 200 drives the movable contact rigidly connected to the driving disk to switch from the opening position to the first closing position (the driving disk should rotate counterclockwise in fig. 1), the first driving portion 211 of the driving disk 200 may drive the first driven portion 311 of the driven disk 300, so as to drive the driven disk 300 to rotate from the opening indicating position to the first closing indicating position (the driven disk should rotate clockwise in fig. 1); preferably, in this process, it is ensured that the first driving portion 211 can always apply a torque to the first driven portion 311. Similarly, when the driving disc 200 drives the movable contact to switch from the opening position to the second closing position, as shown in fig. 2 to 5, at this time, the driving disc 200 rotates clockwise, and the second driving portion 221 of the driving disc 200 may drive the second driven portion 321 of the driven disc 300, so as to thereby drive the driven disc 300 to rotate from the opening indicating position to the second closing indicating position, and the driven disc 300 rotates counterclockwise in fig. 2 to 5; preferably, in this process, it is ensured that the second driving part 221 can always apply a torque to the second driven part 321.

In some embodiments, as shown in fig. 1-2 and 4-5, the driven disk 300 may further be provided with a first closing indication portion 381 indicating a first closing indication position, a second closing indication portion 382 indicating a second closing indication position, and an opening indication portion 383 indicating an opening indication position, so as to indicate to a user which position the driven disk 300 is in explicitly, and thus indicate to the user which position the dual power transfer switch is in the first closing position, the second closing position, or the opening position explicitly. In some more specific embodiments, as shown, the driven disk 300 may be configured to include a driven plate 370 and an indicator plate 380 that rotate together, i.e., the driven plate 370 and the indicator plate 380 may be configured to rotate synchronously about a rotational axis 110 fixedly disposed with respect to the frame 100, and the driven plate 370 and the indicator plate 380 may be provided as a single piece or may be provided as two separate pieces fixedly coupled together. In a more specific embodiment, the first follower 311 and the second follower 321 may be disposed on the follower plate 370, the first closing instruction part 381, the second closing instruction part 382, and the opening instruction part 383 are disposed on the indicator plate 380, and the opening instruction part 383 is located between the first closing instruction part 381 and the second closing instruction part 382. This allows the full use of available space, such as available space within a dual power transfer switch, to flexibly set the driven plate 370 and the indicator plate 380 as needed to give an unambiguous position indication. As shown in the figures, the driven plate 370 may be provided having an elongated body plate 340 and first and second lobes 310, 320 extending from the elongated body plate 340; the indicating plate 380 may be provided as a sector plate, and a first closing indicating part 381, a second closing indicating part 382, and a switching-off indicating part 383 are sequentially provided on an outer circumference of the sector plate.

It should be noted that the position indication mechanism 10 or the dual power transfer switch using the position indication mechanism 10 will be configured such that the first closing indication portion 381, the second closing indication portion 382 and the opening indication portion 383 can be easily observed from the outside, for example, via an observation window in a corresponding housing (not shown) or cabinet (not shown).

As shown in fig. 2 and 5, in some embodiments, the first and second elastic return members 400 and 500 are connected between the frame 100 and the driven plate 300 in an opposing manner. More specifically, a boss pin 120 eccentric with respect to the rotation axis 110 of the driven disc 300 may be provided on the frame 100, and the first and second elastic restoring members 400 and 500 are connected between the boss pin 120 and the driven disc 300 in such a manner as to face each other. In embodiments where the driven plate 300 includes a driven plate 370 and an indicator plate 380, the first and second resilient return members 400, 500 may then be coupled between the eccentric cam pin 120 on the chassis 100 and the indicator plate 380 in an opposing manner to each other, e.g., the first and second resilient return members 400, 500 may each have a first end coupled to the cam pin 120 and a second end coupled at two spaced locations on the periphery of the indicator plate 380.

Alternatively, as shown in fig. 2, the first and second elastic return members 400 and 500 are arranged to be equally pre-tensioned when the driven disc 300 is in the opening indicating position. Thereby, it can be ensured that the driven disc 300 is kept in the intermediate equilibrium position, i.e. in the opening indicating position, under the co-action of the first elastic return member 400 and the second elastic return member 500.

In some embodiments, the first elastic return member 400 is configured to store potential energy, e.g. be elongated, during the rotation of the driven disc 300 from the opening indicating position to the first closing indicating position; the second elastic reset member 400 is configured to store potential energy, for example, to be elongated, during the rotation of the driven plate 300 from the opening indicating position to the second closing indicating position, as shown in fig. 5, which shows the second elastic reset member 500 storing potential energy, when the driven plate 300 is in the second closing indicating position, which indicates that the dual power transfer switch is in the second closing position.

Furthermore, in a further embodiment, in the first closing indicating position, the first elastic resetting member 400 has stored potential energy, the first driving portion 211 of the driving disc 200 abuts against the first driven portion 311 of the driven disc 300 to resist the resetting force of the first elastic resetting member 400, and at this time, the first driven portion 311 will be stopped under the combined action of the abutment of the first driving portion 211 and the resetting force of the first elastic resetting member 400, so that the driven disc 300 is maintained at the first closing indicating position. Similarly, as shown in fig. 4-5, in the second closing indicating position, the second elastic resetting member 500 has stored potential energy, the second driving portion 221 of the driving disc 200 abuts against the second driven portion 321 of the driven disc 300 to resist the resetting force of the second elastic resetting member 500, and at this time, the second driven portion 321 will be stopped under the combined action of the abutment of the second driving portion 221 and the resetting force of the second elastic resetting member 500, so that the driven disc 300 is maintained at the second closing indicating position.

More specifically, when the driving disc 200 drives the movable contact to rotate from the first closing position to the opening position, the first driving portion 211 of the driving disc 200 no longer abuts against the first driven portion 311 of the driven disc 300, and at this time, the driven disc 300 will be reset from the first closing indication position to the opening indication position under the action of the potential energy released by the first elastic resetting member 400. When the driving part 200 drives the movable contact to rotate from the second closing position to the opening position, the second driving part 221 of the driving disc 200 no longer abuts against the second driven part 321 of the driven disc 300, and at this time, the driven disc 300 is reset from the second closing indicating position to the opening indicating position under the action of the potential energy released by the second elastic resetting member 500. It should be noted that in this process, driving disc 200 generally rotates at a faster speed than driven disc 300, so that driving disc 200 does not block the return rotation of driven disc 300. More specifically, as shown in fig. 6, when the driving disk 200 drives the movable contact to rotate from the second closing position to the opening position, the driven disk 300 will be reset from the second closing indication position to the opening indication position, and in this process, a gap is always kept between the first driving portion 211 and the second driving portion 221 of the driving disk 200 and the first driven portion 311 and the second driven portion 321 of the driven disk 300, so that interference between the driving disk 200 and the driven disk 300 does not occur, and resetting of the driven disk 300 is not affected, so as to prevent the driven disk 300 from giving inaccurate position indication.

In some embodiments, as shown in fig. 1, 3-4 and 6, the driving disc 200 may be provided with a first stopping portion 201 and a second stopping portion 202, and the rack 100 is provided with a first cooperating stopping portion and a second cooperating stopping portion (not shown), the first stopping portion 201 cooperates with the first cooperating stopping portion to stop the driving disc 200 from pivoting the movable contact from the open position to the first closed position, and the second stopping portion 202 cooperates with the second cooperating stopping portion to stop the driving disc 200 from pivoting the movable contact from the open position to the second closed position.

In some embodiments, as shown in fig. 1, 3-4 and 6, the driven disc 300 is provided with a third stopping portion 301 and a fourth stopping portion 302, and the frame 100 is provided with a third cooperating stopping portion and a fourth cooperating stopping portion (not shown), the third stopping portion 301 cooperates with the third cooperating stopping portion to stop the pivoting of the driven disc 300 from the opening indicating position to the first closing indicating position, and the fourth stopping portion 302 cooperates with the fourth cooperating stopping portion to stop the pivoting of the driven disc 300 from the opening indicating position to the second closing indicating position.

According to another aspect of the present invention, a dual power transfer switch is provided, which includes a movable contact and the position indication mechanism 10 as described above, wherein the movable contact can be driven by the driving disc 200 of the position indication mechanism 10 to pivot so as to be located at the first switch-on position, the second switch-on position and the switch-off position. It should be noted that, more specifically, the driving disk 200 is a power mechanism of the entire dual power transfer switch, which is configured to transmit the driving force to the movable contacts.

The exemplary embodiment of the position indication mechanism for dual power transfer switch provided by the present invention has been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations of the various technical features and structures provided by the present invention can be made without departing from the scope of the present invention.

The scope of the present disclosure is not defined by the above-described embodiments but is defined by the appended claims and equivalents thereof.

Claims (14)

1. A position indication mechanism of a dual power transfer switch, the position indication mechanism comprising:

a frame fixedly arranged;

the driving disc is arranged to be rigidly connected with the movable contact of the dual-power transfer switch and is provided with a first driving part and a second driving part which are spaced from each other and are arranged oppositely;

the driven disc is pivotally arranged on the rack and provided with a first driven part corresponding to the first driving part and a second driven part corresponding to the second driving part, the driven disc is provided with a first closing indicating position, a second closing indicating position and a closing indicating position, the first driven part enables the driven disc to rotate from the closing indicating position to the first closing indicating position under the action of the first driving part, and the second driven part enables the driven disc to rotate from the closing indicating position to the second closing indicating position under the action of the second driving part;

a first elastic resetting member connected between the driven disc and the frame and configured to reset the driven disc from the first closing indicating position to the opening indicating position;

and a second elastic resetting member connected between the driven disc and the frame and configured to reset the driven disc from the second closing indicating position to the opening indicating position.

2. The position indicating mechanism according to claim 1, wherein the driven disk is further provided with a first closing indicating section indicating the first closing indicating position, a second closing indicating section indicating the second closing indicating position, and an opening indicating section indicating the opening indicating position.

3. The mechanism according to claim 2, wherein the driven plate includes a driven plate and an indicating plate that rotate together, the first driven part and the second driven part are provided on the driven plate, the first closing indicating part, the second closing indicating part, and the opening indicating part are provided on the indicating plate, and the opening indicating part is located between the first closing indicating part and the second closing indicating part.

4. The position indicating mechanism of claim 3, wherein the first resilient return member and the second resilient return member are connected in an opposing manner between the frame and the indicator plate.

5. Position indicator mechanism according to any of claims 1 to 4, characterized in that the first and second elastic return members are arranged to be equally pretensioned in the opening indication position.

6. The position indicating mechanism according to any one of claims 1 to 4, characterized in that:

the first elastic resetting member is arranged to store potential energy during the rotation of the driven disc from the opening indicating position to the first closing indicating position;

the second elastic reset member is configured to store potential energy during rotation of the driven disc from the opening indicating position to the second closing indicating position.

7. The position indicating mechanism of claim 6, wherein:

the first driving part is arranged to abut against the first driven part at the first closing indication position to resist a reset force of the first elastic reset member;

the second driving portion is disposed to abut against the second driven portion at the second closing indication position to resist a reset force of the second elastic reset member.

8. The position indicating mechanism according to any one of claims 1 to 4, characterized in that:

the first drive part is a first circumferential surface of a first protrusion protruding relative to the main body part of the drive disc;

the second drive portion is a second circumferential surface of a second projection projecting with respect to the main body portion of the drive disc.

9. The position indicating mechanism of claim 8, wherein:

the first driven portion is a first lobe protruding with respect to a main body plate of the driven disk;

the second driven portion is a second lobe protruding with respect to a main body plate of the driven disk.

10. The position indicating mechanism according to any one of claims 1 to 4, wherein in the open indicating position, the first driven part and the second driven part are located between the first driving part and the second driving part, and there is a gap between the first driving part and the first driven part and/or there is a gap between the second driving part and the second driven part.

11. The position indicating mechanism of any one of claims 1 to 4, wherein the drive plate is rigidly connected to the movable contact by a shaft passing through the rotational axes of the drive plate and the movable contact.

12. The position indicating mechanism of claim 11, wherein said drive disc is provided with a first stop and a second stop, and said frame is provided with a first cooperating stop and a second cooperating stop, said first stop cooperating with said first cooperating stop to stop pivoting of said drive disc in a first direction, and said second stop cooperating with said second cooperating stop to stop pivoting of said drive disc in a second direction opposite to said first direction.

13. The position indicating mechanism according to any one of claims 1 to 4, wherein the driven disc is provided with a third stopper and a fourth stopper, and a third cooperating stopper and a fourth cooperating stopper are provided on the frame, the third stopper cooperating with the third cooperating stopper to stop the pivoting of the driven disc from the opening indicating position to the first closing indicating position, and the fourth stopper cooperating with the fourth cooperating stopper to stop the pivoting of the driven disc from the opening indicating position to the second closing indicating position.

14. A dual power transfer switch comprising a moveable contact and a position indicating mechanism as claimed in any one of claims 1 to 13, the moveable contact being pivotable with a drive plate of the position indicating mechanism to have a first on position, a second on position and an off position.

Images