CN213815887U

CN213815887U - Double-power-supply change-over switch

Info

Publication number: CN213815887U
Application number: CN202023014252.XU
Authority: CN
Inventors: 谌忠瑞; 刘振忠; 谢汐; 周斌; 周俊杰
Original assignee: Schneider Electric Industries SAS
Current assignee: Schneider Electric Industries SAS
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-07-27
Anticipated expiration: 2030-12-15
Also published as: EP4016573B1; ES2966592T3; EP4016573A1

Abstract

The utility model discloses a double power supply change-over switch, which comprises a driving disc; the first transmission rod and the second transmission rod respectively transmit the motion of the driving disc to the first moving contact and the second moving contact; the indicating piece is driven by the first transmission rod and the second transmission rod to perform linear motion; the blocking piece is driven by the indicating piece to rotate and comprises a first blocking part and a second blocking part; the manual operation disk is coaxial and synchronously rotated with the driving disk and comprises a first protruding part and a second protruding part, wherein when the contact is subjected to fusion welding, the manual operation disk cannot move continuously to the double-division position due to the abutting joint of the first blocking part and the first protruding part or the abutting joint of the second blocking part and the second protruding part, so that the safety of the contact during fusion welding is ensured.

Description

Double-power-supply change-over switch

Technical Field

The utility model relates to a dual supply change over switch.

Background

A dual power transfer switch (ATS) needs to switch between two different power sources to ensure the continuity of power supply to a load. An ATS has three positions, a first power-on position, a double-split position (also called an OFF position, where the load is not connected to the first and second power sources), and a second power-on position. An ATS with isolation capability, when the ATS product is in a double-split position, the user can padlock and overhaul the associated equipment. Therefore, the isolation performance of the dual split position becomes an important market demand.

Contact fusion welding refers to fusion and adhesion of contacts, which may be caused by the fact that the current passing through the contacts of the electrical equipment exceeds the rated current of the contacts, or the contact generates heat due to the fact that the electrical resistance between the contacts is increased due to the aging of the electrical equipment.

ATS products typically have indicator tabs that indicate the status of the location of the ATS product. When the contacts are welded, it is required that the indicator piece cannot be indicated to the double-division position, otherwise if the indicator piece is indicated to the double-division position, the ATS product is actually in the first power supply or second power supply switching-on position due to the contact welding, which would be a great safety risk to the user or the service man.

SUMMERY OF THE UTILITY MODEL

To above problem, according to the utility model discloses, a dual power transfer switch is proposed, include: a drive disc; the first transmission rod and the second transmission rod respectively transmit the motion of the driving disc to the first moving contact and the second moving contact, so that when the driving disc respectively moves to a first position, a middle position and a second position, the first moving contact and the second moving contact are correspondingly driven to enable the double-power-supply change-over switch to be respectively positioned at a first power supply switching-on position, a double-split position and a second power supply switching-on position; an indicator coupled to the first and second transmission rods and configured to be linearly movable in a first direction, wherein the indicator is driven to a first indication position, a middle indication position, and a second indication position when the dual power transfer switch is located at a first power on position, a double split position, and a second power on position, respectively, and wherein the indicator includes a slot; the blocking piece can rotate around the fixed shaft, comprises a first blocking part and a second blocking part which extend outwards from the rotating center, and further comprises a protrusion matched with the groove part, so that the straight-line motion of the indicating piece drives the blocking piece to rotate through the matching of the groove part and the protrusion, and the blocking piece is correspondingly positioned at a first blocking position, a middle blocking position and a second blocking position when the indicating piece is respectively positioned at the first indicating position, the middle indicating position and the second indicating position; the manual operating disc is coaxial and synchronously rotated with the driving disc and comprises a disc body and a first protruding part and a second protruding part which protrude outwards from the disc body in the radial direction, wherein the first protruding part, the second protruding part, the first blocking part and the second blocking part are designed in shapes and positions so that the first protruding part abuts against the first blocking part in the process of rotating the manual operating disc to the double-division position and the manual operating disc cannot move continuously under the condition that contact fusion welding occurs when the double-power-supply changeover switch is located at the first power-supply switching-on position; when the dual-power transfer switch is located at the second power switching-on position and the contact is welded, the second protruding part abuts against the second blocking part on the way that the manual operation panel rotates to the double-division position, so that the manual operation panel cannot move continuously.

The control panel according to the present invention may have one or more of the following features.

According to one embodiment, the dual power transfer switch further comprises an indicator piece, the indicator piece can rotate around a fixed axis and comprises a slot hole matched with a pin of the indicator piece, so that the indicator piece is driven to rotate by linear motion of the indicator piece, and when the indicator piece is located at the first indication position, the middle indication position and the second indication position respectively, the indicator piece indicates first closing, opening and second closing respectively.

According to one embodiment, the blocking element is also unable to rotate in the event of contact fusion welding, so that the indicator piece is unable to indicate opening.

According to one embodiment, when the dual power transfer switch works normally, the first protruding portion does not abut against the first blocking portion, and the second protruding portion does not abut against the second blocking portion.

According to one embodiment, when the dual power transfer switch is in the first power on position, the blocking member is rotated to a position where the first blocking portion is closest to the manual manipulation panel; when the dual power transfer switch is located at the second power switching-on position, the blocking piece rotates to the position where the second blocking part is closest to the manual operation panel.

According to one embodiment, the blocking element comprises a body in the shape of a V that opens facing the manual operating disc, the first blocking portion and the second blocking portion forming two arms in the shape of a V.

According to one embodiment, the bodies are joined at a root of the V to form a reinforcement.

According to one embodiment, the projection protrudes upward from the plane of the body of the blocking member and is formed in a cylindrical shape.

According to one embodiment, the groove portion is formed as a U-shaped groove and has a width equal to or slightly greater than a diameter of the protrusion.

According to one embodiment, the first projection and the second projection are formed as arcs centered on the center of the manual operation panel.

According to the utility model discloses a dual power transfer switch, when taking place contact fusion welding, because manual operation dish and the interact who stops for can not instruct two branch positions, thereby guaranteed safety function. Moreover, the safety of the dual-power transfer switch when the contact is subjected to fusion welding at two working positions (a first power supply switching-on position and a second power supply switching-on position) can be ensured through a blocking part, and the dual-power transfer switch is simple and reliable in structure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.

Fig. 1 is a perspective view of a portion of a dual power transfer switch according to the present invention.

Fig. 2 is a perspective view of a portion of a dual power transfer switch according to the present invention, viewed in the opposite direction to fig. 1.

Fig. 3 is a perspective view of a portion of a dual power transfer switch according to the present invention, more clearly showing the blocking member and the manually operated dial.

Fig. 4 is an enlarged view of a blocking member of a dual power transfer switch according to the present invention.

Fig. 5 is a view of a dual power transfer switch according to the present invention in a first power on position.

Fig. 6 is a view of the dual power transfer switch according to the present invention with the contacts fusion welded when in the first power on position.

Fig. 7 is a view of a dual power transfer switch in a second power on position according to the present invention.

Fig. 8 is a view of the contact fusion welding that occurs when the dual power transfer switch is in the second power on position, according to the present invention.

List of reference numerals

10 drive plate

21 first driving lever

22 second driving lever

31 first moving contact

32 second moving contact

40 indicator

41 groove part

50 barrier

51 first stop

52 second stop

53 convex

54 reinforcing part

60 hand-operated panel

61 first projection

62 second projection

63 disc body

70 indicating sheet

Detailed Description

In order to make the technical solution of the present invention, its purpose, technical solution and advantages become clearer, the drawings of the embodiments of the present invention will be combined hereinafter, and the technical solution of the embodiments of the present invention will be clearly and completely described. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The present invention is described in detail below by way of describing example embodiments.

The dual power transfer switch can be switched between two different power supplies and has a first power supply switching-on position, a double-branch position and a second power supply switching-on position. As shown in fig. 1, the dual power transfer switch according to the present invention may include a driving disk 10, and the driving disk 10 may be driven by an electric drive or a manual drive. The dual power transfer switch may further include a transmission mechanism to transmit the motion of the driving disk 10 to the movable contacts, and since the dual power transfer switch has the first movable contact 31 and the second movable contact 32, the transmission mechanism may include the first transmission rod 21 and the second transmission rod 22 to transmit the motion of the driving disk 10 to the first movable contact 31 and the second movable contact 32, respectively. It is understood that the transmission mechanism may further include a third transmission rod and a fourth transmission rod to symmetrically drive the movable contacts, as shown in fig. 1. It is also understood that the first movable contact 31 may comprise four first movable contacts 31 corresponding to three first phase poles and one first neutral pole, respectively; likewise, the second movable contact 32 may comprise four second movable contacts 32 corresponding to three second poles and one second neutral pole, respectively, of which only one first movable contact 31 and one second movable contact 32 are shown in fig. 1 for clarity. When the driving disc 10 moves to the first position, the middle position, and the second position, the first moving contact 31 and the second moving contact 32 are driven correspondingly, so that the dual-power transfer switch is located at the first power switching-on position (the first moving contact 31 is located at the switching-on position, and the second moving contact 32 is located at the switching-off position), the dual-branch position (the first moving contact 31 and the second moving contact 32 are both located at the switching-off position), and the second power switching-on position (the second moving contact 32 is located at the switching-on position, and the first moving contact 31 is located at the switching-off position).

The dual power transfer switch may further include an indicator 40, and the indicator 40 is cooperatively connected with the first transmission lever 21 and the second transmission lever 22 and configured to be linearly movable in a first direction (shown as a left-right direction in fig. 1). The cooperation of the indicator 40 with the first and second transmission levers 21 and 22 is such that the indicator 40 can be driven to the first indicating position, the intermediate indicating position, and the second indicating position, respectively, when the dual power transfer switch is in the first power on position, the double split position, and the second power on position, respectively. For example, the intermediate indicating position is between the first indicating position and the second indicating position, the second indicating position being to the left of the intermediate indicating position and the first indicating position being to the right of the intermediate indicating position in fig. 1. In the embodiment of fig. 1, the indicator 40 is provided in the form of a vertically extending strip.

The dual power transfer switch may further include an indicator sheet 70, as shown in fig. 1, the indicator sheet 70 being disposed above the indicator 40 and rotatable about a fixed axis. The indicating piece 70 may be provided with a slot spaced apart from a fixed axis, which may be engaged with a pin provided on the indicating member 40, such that the left and right linear movement of the indicating member 40 rotates the indicating piece 70 about the fixed axis, and the indicating piece 70 indicates first closing, opening, and second closing when the indicating member 40 is located at the first indicating position, the middle indicating position, and the second indicating position, respectively. For example, the slot hole is formed as a racetrack-shaped through hole, and the width of the through hole is equal to or slightly larger than the diameter of the pin. The indication sheet 70 may be provided with marks "I", "O", "II" to indicate the state of the dual power transfer switch to a user. The housing of the dual power transfer switch may be provided with a transparent indicator window to display indicia on the indicator sheet 70.

The dual power transfer switch may further include a blocking member 50 that is rotatable about a fixed shaft. Fig. 4 shows an enlarged view of the blocking member 50, and the blocking member 50 may include a first blocking portion 51 and a second blocking portion 52 extending outward from the rotation center. Specifically, the blocking member 50 may include a body having a V shape, and the first blocking portion 51 and the second blocking portion 52 form two arms of the V shape, and the width of the two arms may increase as being away from the rotation center. Preferably, the body of the barrier 50 is joined at the root of the V to form the stiffener 54 so that the barrier 50 has sufficient stiffness. As shown in fig. 4, the blocking member 50 may further include a protrusion 53, and the protrusion 53 may be engaged with the groove portion 41 provided on the indicator 40. For example, the projection 53 may protrude upward from the plane of the body of the blocking member 50 and be formed in a cylindrical shape, and the groove portion 41 of the indicator 40 may be formed in a U-shaped groove that opens to the projection 53 and has a width equal to or slightly greater than the diameter of the projection 53, and the groove portion 41 of the indicator 40 may be seen from fig. 2. By the cooperation of the groove 41 and the protrusion 53, the left and right linear motion of the indicator 40 drives the blocking member 50 to rotate around the fixed axis thereof, so that the blocking member 50 is located at the first blocking position, the middle blocking position and the second blocking position when the indicator 40 is located at the first indicating position, the middle indicating position and the second indicating position, respectively.

The dual power transfer switch may further include a manual manipulation dial 60, and the manual manipulation dial 60 may be coaxially and synchronously rotated with the driving dial 10. As shown in fig. 3, the manual manipulation disc 60 may include a disc body 63 and first and

second protrusions

61 and 62 protruding radially outward from the disc body 63, and the first and

second protrusions

61 and 62 may be arcs centered on the center of the manual manipulation disc 60. The V-shaped body of the stopper opens towards the manual operating plate 60.

Hereinafter, how the dual power transfer switch according to the present invention performs the protection function at the time of contact fusion welding will be described in detail with reference to fig. 5 to 8.

Referring first to fig. 5, at this time, the dual power transfer switch is located at the first power switching-on position, and it can be seen that the first moving contact 31 is switched on and the second moving contact 32 is switched off. Meanwhile, the indicating member 40 is in the first indicating position, the indicating piece 70 indicates the first closing, and the blocking member 50 is located in the first blocking position, i.e., rotated to a position where the first blocking portion 51 is closest to the manual manipulation plate 60 as shown in fig. 5. At this time, if the contacts are welded, that is, the first movable contact 31 and the first fixed contact are welded and adhered, and a user attempts to switch the dual power transfer switch to the dual-split position, the manual operating panel 60 moves clockwise from fig. 5 to the position of fig. 6, and the first protrusion 61 of the manual operating panel 60 abuts against the first blocking portion 51 of the blocking member 50, so that the manual operating panel 60 cannot move continuously, the blocking member 50 cannot rotate, and the indication piece 70 cannot indicate opening. Therefore, the user does not obtain the information of opening from the indication sheet 70, and the safety is ensured.

Similarly, referring to fig. 7, the dual power transfer switch is located at the second power switching-on position, and it can be seen that the second movable contact 32 is switched on and the first movable contact 31 is switched off. Meanwhile, the indicating member 40 is in the second indicating position, the indicating piece 70 indicates the second closing, and the blocking member 50 is in the second blocking position, i.e., rotated to a position where the second blocking portion 52 is closest to the manual manipulation plate 60 as shown in fig. 7. At this time, if the contacts are welded, that is, the second movable contact 32 and the second fixed contact are welded and adhered, and a user attempts to switch the dual power transfer switch to the dual-split position, the manual operating panel 60 moves counterclockwise from fig. 7 to the position of fig. 8, and the second protrusion 62 of the manual operating panel 60 abuts against the second blocking portion 52 of the blocking member 50, so that the manual operating panel 60 cannot move continuously, the blocking member 50 cannot rotate, and the indication piece 70 cannot indicate opening. Therefore, the user does not obtain the information of opening from the indication sheet 70, and the safety is ensured.

The exemplary embodiment of the dual power transfer switch proposed 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 improvements 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 proposed by the present invention can be made without departing from the scope of the present invention.

Claims

1. A dual power transfer switch, comprising:

a drive disc;

the first transmission rod and the second transmission rod respectively transmit the motion of the driving disc to the first moving contact and the second moving contact, so that when the driving disc respectively moves to a first position, a middle position and a second position, the first moving contact and the second moving contact are correspondingly driven to enable the double-power-supply change-over switch to be respectively positioned at a first power supply switching-on position, a double-split position and a second power supply switching-on position;

an indicator coupled to the first and second transmission rods and configured to be linearly movable in a first direction, wherein the indicator is driven to a first indication position, a middle indication position, and a second indication position when the dual power transfer switch is located at a first power on position, a double split position, and a second power on position, respectively, and wherein the indicator includes a slot;

the blocking piece can rotate around the fixed shaft, comprises a first blocking part and a second blocking part which extend outwards from the rotating center, and further comprises a protrusion matched with the groove part, so that the straight-line motion of the indicating piece drives the blocking piece to rotate through the matching of the groove part and the protrusion, and the blocking piece is correspondingly positioned at a first blocking position, a middle blocking position and a second blocking position when the indicating piece is respectively positioned at the first indicating position, the middle indicating position and the second indicating position; and

a manual operation disk, coaxial and synchronous with the driving disk, including a disk body and a first protrusion and a second protrusion protruding radially outward from the disk body,

the shapes and positions of the first protruding part, the second protruding part and the first blocking part and the second blocking part are designed to ensure that the first protruding part abuts against the first blocking part in the process of rotating the manual operating panel to the double-division position to prevent the manual operating panel from continuously moving under the condition that the contact is welded when the double-power-supply changeover switch is positioned at the first power-supply switching-on position; when the dual-power transfer switch is located at the second power switching-on position and the contact is welded, the second protruding part abuts against the second blocking part on the way that the manual operation panel rotates to the double-division position, so that the manual operation panel cannot move continuously.

2. The dual power transfer switch of claim 1, further comprising an indicator tab that is rotatable about a fixed axis, the indicator tab including a slot that engages a pin of an indicator such that linear movement of the indicator tab rotates the indicator tab, and the indicator tab indicates a first closing, a second opening, and a third closing when the indicator tab is in a first indicating position, a middle indicating position, and a second indicating position, respectively.

3. The dual power transfer switch of claim 2, wherein the blocking member is also prevented from rotating in the event of contact fusion welding, such that the indicator piece is prevented from indicating opening.

4. The dual power transfer switch of claim 1, wherein the first protrusion does not abut the first stop and the second protrusion does not abut the second stop when the dual power transfer switch is operating normally.

5. The dual power transfer switch of any of claims 1-4, wherein when the dual power transfer switch is in the first power on position, the blocking member rotates to a position where the first blocking portion is closest to the manually operated dial; when the dual power transfer switch is located at the second power switching-on position, the blocking piece rotates to the position where the second blocking part is closest to the manual operation panel.

6. The dual power transfer switch of any of claims 1-4, wherein the blocking member comprises a V-shaped body that opens facing a manual operating panel, the first blocking portion and the second blocking portion forming two arms of the V-shape.

7. The dual power transfer switch of claim 6, wherein the bodies are joined at a root of the V to form a stiffener.

8. The dual power transfer switch of claim 6, wherein the protrusion protrudes upward from a plane of the body of the blocking member and is formed in a cylindrical shape.

9. The dual power transfer switch of claim 8, wherein the slot is formed as a U-shaped slot and has a width equal to or slightly greater than a diameter of the protrusion.

10. The dual power transfer switch of any of claims 1-4, wherein the first protrusion and the second protrusion are formed as arcs centered on a center of a manual dial.