CN111403203B - Change-over switch device - Google Patents
Change-over switch device Download PDFInfo
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- CN111403203B CN111403203B CN201910004014.3A CN201910004014A CN111403203B CN 111403203 B CN111403203 B CN 111403203B CN 201910004014 A CN201910004014 A CN 201910004014A CN 111403203 B CN111403203 B CN 111403203B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
Abstract
The present invention relates to a transfer switch device, comprising: the first switch unit drives the first movable contact component by the pivoting motion of a first handle of the first switch unit, so that the first movable contact component can move between a closing state and an opening state; the second switch unit drives the second movable contact component by the pivoting motion of a second handle of the second switch unit, so that the second movable contact can move between a closing state and an opening state; an interlock disposed about a first pin at the moving end of the first handle and a second pin at the moving end of the second handle; an actuating device for actuating the interlock device, the first pin and the second pin such that the transfer switch device has the following operating states: the first moving contact is in a closing state, and the second moving contact is in an opening state; the second moving contact is in a closing state, and the first moving contact is in an opening state; the first moving contact and the second moving contact are in an opening state at the same time.
Description
Technical Field
The present invention relates to a transfer switch device, and more particularly, to a dual power Automatic Transfer Switch (ATS).
Background
The dual-power Automatic Transfer Switch (ATS) is a widely used switching device, and with the increasing attention on the continuity of power supply, it is applied to more and more occasions, and people have raised higher and higher requirements on the performance, which requires engineers to continuously research and develop new ATS products to meet new market requirements.
However, the development of ATS generally requires a long period, and its product itself has many similar features to switching appliances. How to reuse the switching appliances as the components of the ATS is a very valuable thing, and the method can shorten the development period of ATS products, reduce the development cost of the ATS products, inherit the performance of the reused switching appliances and ensure the quality of the products.
Disclosure of Invention
In order to solve the problems, the invention provides a change-over switch device based on a double-breakpoint switch.
According to an aspect of the present invention, there is provided a transfer switching apparatus including: the first switch unit comprises a first rack, a first handle, a first transmission mechanism and a first movable contact component, wherein the first handle is pivotally arranged on the first rack, the first movable contact component is connected to the first handle through the first transmission mechanism, the pivoting motion of the first handle drives the first movable contact component through the first transmission mechanism, so that the first movable contact of the first movable contact component can move between a closing state and an opening state, and the electrical connection between a first power source fixed contact and a load first terminal is connected and disconnected,
the second switch unit comprises a second rack, a second handle, a second transmission mechanism and a second movable contact component, the second handle is pivotally arranged on the second rack, the second movable contact component is connected to the second handle through the second transmission mechanism, the pivoting motion of the second handle drives the second movable contact component through the second transmission mechanism, so that the second movable contact of the second movable contact component can move between a closing state and an opening state, and the electrical connection between a second power static contact and a second load terminal is communicated and disconnected,
an interlock disposed about a first pin at the moving end of the first handle and a second pin at the moving end of the second handle such that the first and second pins are brought into proximity with each other to bring the first and second handles together,
an actuating device for actuating the interlock device, the first pin and the second pin such that the change-over switch device has the following operating states:
the interlocking device, the first pin and the second pin are positioned at a first position, the first moving contact is in a closing state, and the second moving contact is in an opening state;
the interlocking device, the first pin and the second pin are positioned at a second position, the second moving contact is in a closing state, and the first moving contact is in an opening state;
the interlocking device, the first pin and the second pin are arranged at the middle positions, and the first moving contact and the second moving contact are simultaneously in an opening state.
According to another aspect of the invention, the actuating device comprises:
a first actuating portion movable in a first direction and moving the interlock, the first pin, and the second pin from an intermediate position to the first position or from the second position to the intermediate position; a second actuating portion movable in a second direction and moving the interlock, the first pin, and the second pin from the intermediate position to the second position or from the first position to the intermediate position.
According to an embodiment of the invention, the actuation means comprises an electromagnet or an electric motor for driving the first and second actuation parts.
According to a preferred embodiment of the invention, the actuating means comprises a rod provided with a slot in which the first and second pins are arranged, the first and second actuating portions being inner edges of the slot, the inner edges of the slot pushing the first and second pins in the first or second direction when the rod is moved in the first or second direction.
According to another preferred embodiment of the invention, the actuating means comprises a first and a second lever, the first and second lever being provided with a first and a second slot, respectively, in which the first and second pins are provided, the first and second actuating portions being inner edges of the first and second slots, respectively, the inner edges of the first slot pushing the first and second pins in the first direction when the first lever is moved in the first direction and the inner edges of the second slot pushing the first and second pins in the second direction when the second lever is moved in the second direction.
According to a further embodiment of the present invention, a first return spring for biasing the first lever toward the second direction; a second return spring for biasing the second lever toward the first direction.
According to another aspect of the present invention, the first transmission mechanism includes a first elastic member, a first main link and a first sub link, the first main link is pivotably mounted on the first frame, a moving end of the first main link is connected to a moving end of the first handle via the first elastic member, one end of the first sub link is pivotably connected to the moving end of the first main link, and the other end of the first sub link is connected to the first movable contact assembly, whereby when the first handle is pivoted, the first elastic member applies a rotational moment to the first main link, and the first main link drives the first movable contact assembly to rotate via the first sub link, so that the first movable contact of the first movable contact assembly can move between a closing state and an opening state;
the second transmission mechanism comprises a second elastic component, a second main connecting rod and a second secondary connecting rod, the second main connecting rod is pivotally mounted on the second rack, the moving end of the second main connecting rod is connected to the moving end of the second handle through the second elastic component, one end of the second secondary connecting rod is connected to the moving end of the second main connecting rod, and the other end of the second secondary connecting rod is connected to the second movable contact component.
Preferably, the first frame comprises a first switching-off stopping part, and when the first switch unit is switched off, the first movable contact assembly rotates towards the switching-off direction until the first movable contact assembly abuts against the first switching-off stopping part; the second frame comprises a second brake separating stopping part, and when the second switch unit is switched off, the second movable contact assembly rotates towards the brake separating direction until the second movable contact assembly abuts against the second brake separating stopping part.
Therefore, in the process that the interlocking device, the first pin and the second pin move from the middle position to the first position, the first handle drives the first movable contact assembly to rotate through the first transmission mechanism, so that the first movable contact assembly moves from the opening state to the closing state, and the second movable contact is kept abutting against the second opening stopping part and is maintained in the opening state. And in the process that the interlocking device, the first pin and the second pin move from the middle position to the second position, the second handle drives the second movable contact component to rotate through the second transmission mechanism, so that the second movable contact component moves from the opening state to the closing state, and the first movable contact is kept abutting against the first opening stopping part and is maintained in the opening state.
According to a further aspect of the present invention, one end of the first movable contact can be electrically contacted with the first power source fixed contact, and the other end of the first movable contact can be electrically contacted with the load first terminal; one end of the second moving contact can be in electric contact with the second power source fixed contact, and the other end of the second moving contact can be in electric contact with the second load terminal.
In accordance with the above disclosure, the present invention provides a three position transfer switch assembly by reusing two double break switches. According to the invention, a high-performance dual-power automatic transfer switch is constructed by adding a small number of new parts, namely the interlocking device and the actuating device, in the two double-breakpoint switches. The transfer switch device fully inherits the excellent electrical service life of the double-breakpoint switch, and greatly reduces the time and cost in the development process of the transfer switch device.
Drawings
The present disclosure will be better understood and its advantages will become more apparent to those skilled in the art from the following drawings. The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations and are not intended to limit the scope of the present disclosure.
Fig. 1 shows an exemplary embodiment of a change-over switching device according to the present invention in a plan view;
fig. 2 shows partially in perspective view an exemplary embodiment of a diverter switch device according to the invention
Fig. 3 to 5 are schematic views of a transfer switching apparatus according to the present invention in different states.
Detailed Description
Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. The features and advantages of the present invention will be further understood by those skilled in the art from the accompanying drawings and the corresponding written description. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the description of the present invention, the directions or positional relationships indicated by "upper", "lower", "left", "right", and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the present invention products are conventionally placed when in use, or the directions or positional relationships that the skilled person conventionally understands, only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
Fig. 1 and 2 show an exemplary embodiment of a change-over switch device according to the invention in a plan view and a perspective view, respectively. The change-over switch device comprises a first switch unit 1 in an upper position and a second switch unit 2 in a lower position. The first switch unit 1 and the second switch unit 0 are, for example, double break switches.
The first switching unit 1 includes a first frame 10 and a first movable contact assembly 16 mounted on the first frame 10. The first movable contact assembly 16 includes a first movable contact 160, one end of the first movable contact 160 can be electrically contacted with the first power source fixed contact 17, and the other end can be electrically contacted with the load first terminal 18. The first movable contact 160 is movable between a closed state and an open state. In a closing state, the first movable contact 160 is in communication with the electrical connection between the first power source fixed contact 17 and the load first terminal 18, and in an opening state, the first movable contact 160 disconnects the electrical connection between the first power source fixed contact 17 and the load first terminal 18.
The second switching unit 2 includes a second frame 20 and a second movable contact assembly 26 mounted on the second frame 20. The second movable contact assembly 26 includes a second movable contact 260 having one end capable of electrically contacting the second stationary power contact 27 and the other end capable of electrically contacting the second load terminal 28. The second movable contact 260 is capable of moving between a closed state and an open state. In a closing state, the second movable contact 260 is in communication with the electrical connection between the second power source fixed contact 27 and the load second terminal 28, and in an opening state, the second movable contact 260 disconnects the electrical connection between the second power source fixed contact 27 and the load second terminal 28.
The first stationary power source contact 17 is connected to a standby power source, for example, and the second stationary power source contact 27 is connected to a common power source, for example. The load first terminal 18 and the load second terminal 28 are both connected to a load.
Further, the first switch unit 1 further comprises a first handle 11, which is pivotally mounted on the first frame 10. As shown in fig. 1, the first handle 11 is mounted to the first frame 10, for example, at a pivot end 11-1 thereof, and is pivotally movable about the pivot end 11-1. The first switching unit 1 further comprises a first transmission 12 connecting the first handle 11 to the first movable contact 160 element to convert the pivoting movement of the first handle 11 into a rotational movement of the first movable contact 160 between the closing state and the opening state.
According to an exemplary embodiment of the present invention, the first transmission 12 may include a first resilient member 13 (e.g., a spring, as best shown in fig. 2, only schematically represented in fig. 1 by a dashed line for clarity), a first primary link 14, and a first secondary link 15. The first master link 14 is pivotally mounted on the first frame 10. The first handle 11 is mounted to the first housing 10, for example at its pivot end 11-1, and is pivotally movable about the pivot end 14-1. The moving end 14-2 of the first master link 14 is connected to the moving end 11-2 of the first handle 11 via a first elastic member 13. The first sub link 15 has one end pivotally connected to the moving end 14-2 of the first main link 14 and the other end connected to the first movable contact assembly 16.
Specifically, referring to fig. 2, the moving end 11-2 of the first handle 11 is provided with a first pin 110, and the moving end 14-2 of the first master link 14 is provided with a third pin 140. The first spring member is sleeved to first pin 110 of first handle 11 at one end and to third pin 140 of first handle 11 at the other end to connect first handle 11 and moving end 14-2 of first master link 14.
Thus, when the first handle 11 pivots, the first elastic component 13 applies a rotation moment to the first main link 14, and the rotation of the first main link 14 drives the rotation of the first movable contact assembly 16 via the first sub-link 15, so that the first movable contact 160 of the first movable contact assembly 16 can move between a closing state and an opening state.
Preferably, the first frame 10 comprises a first opening stop 101 (not shown), when said first switch unit 1 is opened, said first movable contact assembly 16 rotates towards the opening direction until it abuts against said first opening stop 101.
Likewise, the second switch unit 2 also comprises a second handle 21, which is pivotably mounted on the second frame 20. As shown in fig. 1, the second handle 21 is mounted to the second frame 20, for example, at a pivot end 21-1 thereof, and is pivotally movable about the pivot end 21-1. The second switching unit 2 further comprises a second transmission mechanism 22 connecting the second handle 21 to the second movable contact 260 element, so as to convert the pivoting movement of the second handle 21 into the rotating movement of the second movable contact 260 between the closing state and the opening state.
The second transmission mechanism 22 may include a second resilient member 23 (e.g., a spring, as best shown in fig. 2, and only schematically represented in fig. 1 by a dashed line for clarity), a second primary link 24, and a second secondary link 25. The second master link 24 is pivotally mounted to the second frame 20. The second handle 21 is mounted to the second frame 20, for example, at its pivot end 24-1, and is pivotally movable about the pivot end 24-1. The moving end 24-2 of the second master link 24 is connected to the moving end 21-2 of the second handle 21 via the second elastic member 23. The second sub link 25 has one end pivotally connected to the moving end 24-2 of the second main link 24 and the other end connected to the second movable contact assembly 26.
Specifically, referring to fig. 2, the moving end 21-2 of the second handle 21 is provided with a second pin 210, and the moving end 24-2 of the second master link 24 is provided with a fourth pin 240. The second elastic member 23 is sleeved to the second pin 210 of the second handle 21 at one end and to the fourth pin 240 of the second handle 21 at the other end to connect the second handle 21 and the moving end 24-2 of the second master link 24.
Therefore, when the second handle 21 pivots, the second elastic component 23 applies a rotation moment to the second main link 24, and the second main link 24 drives the second movable contact assembly 26 to rotate via the second secondary link 25, so that the second movable contact 260 of the second movable contact assembly 26 can move between a closing state and an opening state.
Preferably, the second frame 20 comprises a second opening stop 201 (not shown), when said second switch unit 2 is opened, said second movable contact assembly 26 rotates towards the opening direction until abutting against said second opening stop 201.
As shown in fig. 1 and 2, the transfer switch device according to the present invention further includes an interlock device 3 to move the first handle 11 and the second handle 21 together. According to an exemplary embodiment, the interlock device 3 is, for example, an oblong annular ring member disposed about a first pin 110 at the moving end 11-2 of the first handle 11 and a second pin 210 at the moving end 21-2 of the second handle 21. The first 110 and second 210 pins are always constrained inside the interlock 3 and close to each other during the movement of the first 11 and second 21 handles. On the one hand, the interlock device 3 cannot be undersized to ensure that its internal space provides freedom for the first pin 110 and the second pin 210 to move therein, thereby avoiding mechanical locking of the first handle 11 and the second handle 21 during the linkage. On the other hand, the interlock device 3 cannot be oversized to ensure that the first handle 11 and the second handle 21 move substantially synchronously.
The transfer switch device according to the invention further comprises an actuating device 4 for actuating the interlocking device 3, the first pin 110 and the second pin 210.
With reference to fig. 1 and 2, by way of example, said actuating means 4 comprise a first lever 41 and a second lever 42 arranged between the first switching unit 1 and the second switching unit 2. The first and second levers 41 and 42 are provided with first and second grooves 43 and 44, respectively. The first rod 41 extends from left to right and is provided at its right-hand end with a first groove 43, and the second rod 42 extends from right to left and is provided at its left-hand end with a second groove 44. It should be understood that the positions of the first and second grooves 43 and 44 on the first and second bars 41 and 42 are not limited to those described in the above embodiments, and the first and second grooves 43 and 44 may be provided at other positions on the first and second bars 41 and 42 as well, for example, at intermediate positions.
The first pin 110 of the first handle 11 and the second pin 210 of the second handle 21 are disposed in the first and second slots 43, 44. The first slot 43 includes a left inner edge 43-1 and a right inner edge 43-2, and the second slot 44 also includes a left inner edge 44-1 and a right inner edge 44-2 as shown in fig. 2. When the first lever 41 is moved leftward, the right inner edge 43-2 of the first slot 43 will engage with the first pin 110 or the second pin 210 and push the interlock device 3, the first pin 110, and the second pin 210 to move leftward. When the second lever 42 is moved to the right, the left inner edge 44-1 of the second slot 44 will engage with the first pin 110 or the second pin 210 and push the interlock 3, the first pin 110 and the second pin 210 to move to the right. In this case, the leftward and rightward movements of the interlock device 3, the first pin 110, and the second pin 210 are carried by the movements of the first lever 41 and the second lever 42, respectively.
According to a variant not shown, the actuation means 4 may comprise only one rod. The rod extends from left to right and is provided at its right-hand end with a slot as described above, or the rod extends from right to left and is provided at its left-hand end with a slot as described above. In this case, the lever may be moved to the left or right to actuate the interlock device 3, the first pin 110 and the second pin 210. When the lever is moved to the left, the right inside edge of the slot will engage with the first pin 110 or the second pin 210 and push the interlock 3, the first pin 110 and the second pin 210 to move to the left. When the lever is moved to the right, the left inner edge of the slot will engage with the first pin 110 or the second pin 210 and push the interlock 3, the first pin 110 and the second pin 210 to the right.
According to one embodiment, the movement of the rod may be driven by a driving means, such as an electromagnet or a motor. As an example, as shown in fig. 2, the first lever 41 is driven by one of the unidirectional electromagnets 5, and when the coil of the unidirectional electromagnet 5 is energized, the first lever 41 moves leftward. Likewise, the second rod 42 is driven by another unidirectional electromagnet 6 (not shown), and when the coil of this unidirectional electromagnet 6 is energized, the second rod 42 moves to the right.
Furthermore, the first rod 41 and the second rod 42 may be provided with a first return spring 45 and a second return spring 46, respectively, which are not shown. When the first lever 41 is moved leftward from the initial position shown in fig. 2, the first return spring 45 biases the first lever 41 rightward, returning the first lever 41 to the initial position after the coil of the electromagnet 5 is deenergized. When the second lever 42 moves rightward from the initial position shown in fig. 2, the second return spring 46 biases the second lever 42 leftward, returning the second lever 42 to the initial position after the coil of the electromagnet 6 is deenergized.
Of course, other forms of actuating and driving means are also contemplated by those skilled in the art to effect movement of the first and second pins 110, 210 in both directions, represented in FIG. 1 as both left and right directions.
The change-over switch device according to the invention can have the following operating states under the action of the actuating device 4 as described above.
The interlock device 3, the first pin 110 and the second pin 210 are in the first position, the first movable contact 160 is in the closed state, and the second movable contact 260 is in the open state (see fig. 3);
the interlock device 3, the first pin 110 and the second pin 210 are in the second position, the second movable contact 260 is in the closed state, and the first movable contact 160 is in the open state (see fig. 5);
the interlock device 3, the first pin 110 and the second pin 210 are in the intermediate position, and the first movable contact 160 and the second movable contact 260 are simultaneously in the open state (see fig. 4).
The operation of the transfer switching apparatus according to the present invention will be described below with reference to fig. 3 to 5.
In fig. 4, the interlock device 3, the first pin 110 and the second pin 210 are in the neutral position, the first movable contact 160 of the first switch element 1 is in the open state and in its maximum open position, and the second movable contact 260 of the second switch element 2 is also in the open state and in its maximum open position.
Starting from the neutral position in fig. 4, when the first lever 41 is moved leftward, the right inner edge 43-2 of the first slot 43 engages with the first pin 110 or the second pin 210 and pushes the interlock device 3, the first pin 110, and the second pin 210 to move leftward.
On the first switch unit 1 side, the first handle 11 is rotated clockwise from the position shown in fig. 4, and the first elastic member 13 applies a rotational moment to the first master link 14 and rotates it counterclockwise. The rotation of the first main link 14 drives the first movable contact assembly 16 to rotate clockwise toward the closing direction through the first secondary link 15 until the first movable contact 160 reaches the closing state shown in fig. 3, and at this time, the first movable contact 160 is in communication with the electrical connection between the first power source fixed contact 17 and the load first terminal 18.
On the side of the second switch unit 2, the second handle 21 is rotated counterclockwise from the position shown in fig. 4. Since the second movable contact assembly 26 is held against the second opening stop 201, that is, the second opening stop 201 blocks the counterclockwise rotation of the second movable contact assembly 26, the second elastic member 23 is stretched but does not rotate the second main link 24 and the second secondary link 25, and the second movable contact 260 is maintained in the opening state as shown in fig. 3.
Contrary to the above described procedure, starting from the position shown in fig. 3, when the second lever 42 moves to the right, the left inner edge 44-1 of the second slot 44 engages with the first pin 110 or the second pin 210 and pushes the interlocking device 3, the first pin 110 and the second pin 210 to move to the right, returning them to the intermediate position shown in fig. 4, in which the first movable contact 160 and said second movable contact 260 are simultaneously in the open state.
Starting from the neutral position in fig. 4, when the second lever 42 is moved leftward, the left inner edge 44-2 of the second slot 44 engages with the first pin 110 or the second pin 210 and pushes the interlock device 3, the first pin 110, and the second pin 210 to move leftward.
On the second switch unit 2 side, the second handle 21 is rotated clockwise from the position shown in fig. 4, and the second elastic member 23 applies a rotational moment to the second master link 24 and rotates it counterclockwise. The rotational movement of the second main link 24 drives the second movable contact assembly 26 to rotate clockwise toward the closing direction through the second secondary link 25 until the second movable contact 260 reaches the closing state shown in fig. 5, at which time the second movable contact 260 communicates with the electrical connection between the second power source fixed contact 27 and the load second terminal 28.
On the first switch unit 1 side, the first handle 11 is rotated counterclockwise from the position shown in fig. 4. Since the first movable contact assembly 16 is held against the first trip stopper 101, that is, the first trip stopper 101 blocks the counterclockwise rotation of the first movable contact assembly 16, the first elastic member 13 is stretched but does not rotate the first main link 14 and the first sub-link 15, and the first movable contact 160 is maintained in the trip state as shown in fig. 5.
Contrary to the above described procedure, starting from the position shown in fig. 5, when the first lever 41 is moved to the left, the right inner edge 43-2 of the first slot 43 engages with the first pin 110 or the second pin 210 and pushes the interlocking device 3, the first pin 110 and the second pin 210 to move to the left, returning them to the intermediate position shown in fig. 4, in which the first movable contact 160 and said second movable contact 260 are simultaneously in the open state.
It is worth noting that due to the presence of the interlocking device 3, the first handle 11 and the first pin 110 and the second pin 210 of the second handle 21 are always close to each other during the movement, so that at most only one of the first switching unit 1 and the second switching unit 2 can be in the closed state, without the occurrence of the situation where both switching units are in the closed state.
Further features of the invention can be found in the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description and further features and feature combinations described in the figures and/or shown in the figures alone are used not only in the respectively indicated combination but also in other combinations or alone without departing from the scope of the invention. Details of the invention which are not explicitly shown and explained in the figures, but which are present from the explained details and can be produced by individual feature combinations, are hereby included and disclosed. Accordingly, details and combinations of features not owned by the originally formed independent claims should also be considered disclosed.
Claims (9)
1. A transfer switch apparatus, comprising:
the first switch unit (1) comprises a first rack (10), a first handle (11), a first transmission mechanism (12) and a first movable contact assembly (16), wherein the first handle (11) is pivotally mounted on the first rack (10), the first movable contact assembly (16) is connected to the first handle (11) through the first transmission mechanism (12), and the first movable contact assembly (16) is driven by the pivoting motion of the first handle (11) through the first transmission mechanism (12) so that a first movable contact (160) of the first movable contact assembly (16) can move between a closing state and an opening state to connect and disconnect the electric connection between a first power source fixed contact (17) and a load first terminal (18);
a second switch unit (2) comprising a second frame (20), a second handle (21), a second transmission mechanism (22) and a second movable contact assembly (26), wherein the second handle (21) is pivotally mounted on the second frame (20), the second movable contact assembly (26) is connected to the second handle (21) through the second transmission mechanism (22), and the pivoting motion of the second handle (21) drives the second movable contact assembly (26) through the second transmission mechanism (22), so that the second movable contact (260) of the second movable contact assembly (26) can move between a closing state and an opening state, and the electrical connection between the second power source fixed contact (27) and the load second terminal (28) is connected and disconnected;
-an interlock (3) arranged around a first pin (110) at the moving end (11-2) of the first handle (11) and a second pin (210) at the moving end (21-2) of the second handle (21) so that the first pin (110) and the second pin (210) are brought close to each other to bring the first handle (11) and the second handle (21) together;
-actuating means (4) for actuating the interlocking means (3), the first pin (110) and the second pin (210) so that the change-over switch device has the following operating states:
the interlocking device (3), the first pin (110) and the second pin (210) are in a first position, the first movable contact (160) is in a closing state, and the second movable contact (260) is in an opening state;
the interlocking device (3), the first pin (110) and the second pin (210) are in a second position, the second movable contact (260) is in a closing state, and the first movable contact (160) is in an opening state;
the interlocking device (3), the first pin (110) and the second pin (210) are in a middle position, and the first movable contact (160) and the second movable contact (260) are in an opening state at the same time.
2. A diverter switch device according to claim 1, the actuating means (4) comprising:
a first actuating portion (43-2) movable in a first direction and moving the interlock (3), the first pin (110), and the second pin (210) from an intermediate position to a first position or from a second position to an intermediate position;
a second actuating portion (44-1) movable in a second direction and moving the interlock (3), the first pin (110), and the second pin (210) from an intermediate position to the second position or from the first position to the intermediate position.
3. A diverter switch device according to claim 2, said actuating means (4) comprising an electromagnet or an electric motor for driving said first (43-2) and second (44-1) actuating portions.
4. A diverter switch device according to claim 2 or 3, said actuating means (4) comprising a rod provided with a slot in which said first (110) and second (210) pins are arranged, said first (43-2) and second (44-1) actuating portions being the inner edges of said slot,
when the lever is moved in the first direction or the second direction, the inner edge of the slot pushes the first pin (110) and the second pin (210) in the first direction or the second direction.
5. The transfer switch device of claim 2 or 3, the actuating device (4) comprising a first lever (41) and a second lever (42), the first lever (41) and the second lever (42) being provided with a first slot (43) and a second slot (44), respectively, the first pin (110) and the second pin (210) being provided within the first slot (43) and the second slot (44), the first actuating portion (43-2) and the second actuating portion (44-1) being an inner edge (43-2) of the first slot (43) and an inner edge (44-1) of the second slot (44), respectively,
when the first lever (41) moves in a first direction, the inner edge (43-2) of the first slot (43) pushes the first pin (110) and the second pin (210) in the first direction,
when the second lever (42) moves in a second direction, the inner edge (44-1) of the second slot (44) pushes the first pin (110) and the second pin (210) in the second direction.
6. The transfer switch apparatus of claim 5, comprising:
a first return spring (45) for biasing the first lever (41) toward the second direction;
a second return spring (46) for biasing the second lever (42) toward the first direction.
7. A transfer switch apparatus according to any one of claims 1 to 3,
the first transmission mechanism (12) comprises a first elastic component (13), a first main connecting rod (14) and a first secondary connecting rod (15), the first main connecting rod (14) is pivotally installed on the first frame (10), a moving end (14-2) of the first main connecting rod (14) is connected to a moving end (11-2) of the first handle (11) through the first elastic component (13), one end of the first secondary connecting rod (15) is pivotally connected to the moving end (14-2) of the first main connecting rod (14), and the other end of the first secondary connecting rod is connected to a first movable contact component (16);
the second transmission mechanism (22) comprises a second elastic component (23), a second main link (24) and a second secondary link (25), the second main link (24) is pivotally installed on the second frame (20), the moving end (24-2) of the second main link (24) is connected to the moving end (21-2) of the second handle (21) through the second elastic component (23), one end of the second secondary link (25) is connected to the moving end (24-2) of the second main link (24), and the other end of the second secondary link is connected to the second movable contact component (26).
8. The transfer switch apparatus of any one of claims 1 to 3,
the first frame (10) comprises a first switch-off stop (101), when the first switch unit (1) is switched off, the first movable contact assembly (16) rotates towards the switch-off direction until abutting against the first switch-off stop (101);
the second frame (20) comprises a second switching stop (201), and when the second switch unit (2) is switched off, the second movable contact assembly (26) rotates towards the switching direction until abutting against the second switching stop (201).
9. The transfer switch apparatus of claim 1, wherein
One end of the first movable contact (160) can be electrically contacted with a first power source fixed contact (17), and the other end of the first movable contact (160) can be electrically contacted with a load first terminal (18);
one end of the second movable contact (260) can be electrically contacted with the second power source fixed contact (27), and the other end of the second movable contact (260) can be electrically contacted with the load second terminal (28).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910004014.3A CN111403203B (en) | 2019-01-03 | 2019-01-03 | Change-over switch device |
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| CN201910004014.3A CN111403203B (en) | 2019-01-03 | 2019-01-03 | Change-over switch device |
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| CN111403203B true CN111403203B (en) | 2022-09-27 |
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| US7446271B2 (en) * | 2006-02-10 | 2008-11-04 | Siemens Energy & Automation, Inc. | Circuit breaker interlock devices, systems, and methods |
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| CN201084574Y (en) * | 2007-07-27 | 2008-07-09 | 施耐德万高（天津）电气设备有限公司 | A manual locking device of an automatic switch appliance |
| CN101834073A (en) * | 2009-03-13 | 2010-09-15 | 李新利 | Common-mode excitation high-speed PC type dual power automatic transfer switching equipment |
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