An automatic transfer switch device

Abstract

An automatic switching device is characterized in that: a manual operation opening area (1a) is provided on the mask (1), and a handle assembly (3) and an operation mode control module (4) are mounted on the bracket (2). The handle assembly (3) and the operation mode control module (4) are linked. When the operation mode control module (4) is in different operation states, the operation mode control module (4) can lock or unlock the handle assembly (3) accordingly. The entire device has a simple structure, which improves the reliability of position state realization. At the same time, after the manual operation is completed, the handle must be put back before operation can be performed, which prevents the handle from being lost.

Description

Technical Field

[0001] This invention belongs to the field of low-voltage electrical technology, specifically relating to an automatic transfer switch device. Background Technology

[0002] With social development, people's requirements for the power grid and its transmission and distribution processes are gradually increasing. In some important power distribution situations, the power supply system needs to ensure continuity to ensure electricity safety and that production and daily life are not interrupted. Automatic transfer switches have two or more sets of independent contact systems, which can control the connection / disconnection of the main power supply and the backup power supply under the action of the controller, so that the transmission and distribution lines can switch between the main power supply and the backup power supply. Therefore, automatic transfer switches are widely used in such situations.

[0003] Existing automatic transfer switches generally provide a switching device between three positions: automatic, manual, and padlock. Operators only need to operate the corresponding mode by manipulating the indicator on the panel. When the indicator shows the "automatic" position, the controller controls the opening and closing of the switch; the operator cannot operate the switch using a handle or other tools, and the padlock plate cannot be pulled out for locking. When the indicator shows the "manual" position, the controller is deactivated, and the operator can operate the switch by inserting a handle or other tools into the operating hole of the operating mechanism. In this case, the padlock plate still cannot be pulled out for locking. When the indicator shows the "padlock" position, the controller is deactivated, and the operator cannot operate the switch using a handle or other tools, but the padlock plate can be pulled out for locking. In some operating scenarios, if a malfunction occurs and maintenance is required, to ensure operator safety, the padlock plate can only be pulled out for locking when both positions are open. However, the existing structure has the following drawbacks: 1) The operation buttons on the panel are small, but the operating force is large, requiring a large operating force; 2) The manual operation handle is usually placed on the side of the switch or separated from the switch, and it is easy to not be able to find the handle during on-site operation or the handle is missing from the factory; 3) The three position states of automatic, manual and padlock are not related to each other, and it is easy to perform the operation of the other state while in one position state, which may lead to safety accidents.

[0004] Chinese Patent 201710833952.5 discloses a switching device for a switch, comprising: a handle including a first groove; a mode button operable to change the operating mode of the switch, the mode button including a second groove; a slider connected to the mode button and movable in a first direction in association with the movement of the mode button, the slider including a first block; and a lever operable to be rotatably opened and including a pin, wherein when the mode button is set to the service position, the first block is received in the first groove to hold the handle, and in response to the lever being rotatably opened, the pin is operable to pass through the second groove to prevent movement of the mode button. This achieves the goal that when the switch is operated in the service mode (also known as the padlock mode), both electric and manual operation are disabled by the locking mechanism. However, the technical solution provided by this patent mainly utilizes an electrical system to automatically switch between the automatic, manual, and padlock states of the switching device. The padlock can be engaged in any position, resulting in low reliability. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing automatic transfer switch devices by proposing a new automatic transfer switch device. Through a redesign of the device's structure, the operating force required for the control buttons on the panel is reduced. Furthermore, the linkage mechanisms between the automatic, manual, and padlock positions are interconnected, preventing accidental operation of other positions while in one position. The entire device has a simple structure, improving the reliability of position state implementation. Additionally, after manual operation, the handle must be returned before further operation can be performed, preventing the handle from being lost.

[0006] Technical solution

[0007] To achieve the above-mentioned technical objectives, the present invention proposes an automatic changeover switch device, characterized in that: it includes a mask and a bracket, the mask and the bracket being assembled together; the mask has a manual operation opening area; the bracket is equipped with a handle assembly and an operation mode control module; the handle assembly and the operation mode control module are linked; when the operation mode control module is in different operating states, the operation mode control module can lock or unlock the handle assembly accordingly; a hidden door mechanism is provided on the bracket corresponding to the manual operation opening area; when the handle assembly is in the locked or unlocked state, the hidden door mechanism can correspondingly close or open the manual operation opening area; the operation mode control module is connected to an operation mode locking module, the operation mode locking module ensuring that the operation mode control module can only perform padlocking when the automatic changeover switch is in the double-open position.

[0008] Furthermore, the mask and the bracket are assembled together to form a frame, and the handle assembly, operation mode control module, hidden door mechanism and operation mode locking module are located inside the frame structure.

[0009] Furthermore, the mask is provided with a handle receiving hole, a toggle receiving hole and a padlock receiving hole. The handle can move back and forth when placed in the handle receiving hole, the toggle's actuating part is located in the toggle receiving hole and can be toggled back and forth, and the padlock plate pull cover is located in the padlock receiving hole and can be pulled out from the padlock receiving hole.

[0010] Furthermore, the hidden door mechanism includes a hidden door, which is rotatably mounted inside the mask to correspondingly close or open the manual operation opening area. The hidden door is provided with a curved protrusion, and the handle assembly can drive the hidden door to rotate in the corresponding operation mode through the curved protrusion. The hidden door is connected to a hidden door return spring to enable the hidden door to rotate and return to its original position. The hidden door is provided with a baffle, and the baffle is linked with a lever to lock the lever in the corresponding operation mode.

[0011] One end of the hidden door reset spring is installed in the hidden door reset spring mounting hole on the back of the hidden door, and the other end is installed in the hidden door reset spring mounting hole on the face mask.

[0012] Furthermore, the handle assembly includes a handle box, which is fixedly mounted on the bracket. The handle is mounted in the handle receiving cavity on the handle box and can move back and forth. The bottom of the handle receiving cavity is provided with a handle locking and unlocking component that can lock or unlock the handle in the corresponding operation mode. The upper end of the handle is linked to the operation mode control module, which can lock or unlock the handle in the corresponding operation mode.

[0013] The handle box is provided with a connecting protrusion, and the control box is provided with a connecting groove that matches the connecting protrusion. The connecting protrusion is installed in the connecting groove so that the handle box and the control box are in an L-shape or a T-shape.

[0014] When the handle is placed in or withdrawn from the handle receiving cavity, the handle is able to rotate the hidden door by pressing or releasing the pressure on the curved protrusion.

[0015] Furthermore, the handle locking and unlocking component includes a mounting housing, a pawl return spring, a limit lever, and a pawl. The mounting housing has a mounting groove, and the pawl can move up and down within the mounting groove. The mounting housing also has a guide rail slot. One end of the limit lever is connected to the pawl, and the other end corresponds to the guide rail slot, allowing the guide rail slot to limit the stroke position of the pawl within the mounting groove. One end of the pawl return spring is mounted in the mounting groove, and the other end abuts against the pawl to provide a reset force for the pawl.

[0016] Furthermore, an elastic pawl extends from the pawl, and a handle limiting groove corresponding to the elastic pawl is provided at the lower end of the handle. During the up-and-down movement of the handle in the handle receiving cavity, the pawl can move in conjunction with the pawl in the mounting groove. During the up-and-down movement of the pawl in the mounting groove, the elastic pawl can retract and extend into the handle limiting groove or expand and exit the handle limiting groove, thereby locking or unlocking the handle.

[0017] The mounting housing is fixedly installed in the handle locking / unlocking housing mounting slot at the bottom of the handle receiving cavity in the handle box.

[0018] Furthermore, the operation mode control module includes a control box, which is fixedly mounted on the bracket. A toggle block is installed in a toggle block sliding groove on the control box and can slide back and forth. A micro switch is installed on the control box. During the back and forth movement of the toggle block in the toggle block sliding groove on the control box, the micro switch can be activated to output a corresponding operation mode signal. One end of the toggle block is provided with a handle locking hole, and the upper end of the handle is provided with a handle locking slot corresponding to the handle locking hole. During the back and forth movement of the toggle block in the toggle block sliding groove on the control box, the toggle block can pass through the edge of the handle locking hole and enter the handle locking slot. To enable locking or unlocking of the handle in the corresponding operating mode, the control box is provided with a padlock slide groove hole. The padlock plate is installed in the padlock slide groove hole and can slide back and forth to cover or expose the padlock hole. The lever is provided with a lever limit plate. The padlock plate is provided with a padlock plate baffle at the corresponding position of the lever limit plate. During the back and forth sliding of the lever in the lever slide groove on the control box, the lever can achieve interlocking or unlocking with the padlock plate in the corresponding operating mode through the cooperation of the lever limit plate and the padlock plate baffle. The padlock plate is connected to a padlock plate return spring to provide a return force for itself to return to the padlock slide groove hole.

[0019] The padlock plate is connected to a padlock plate cover, which can pull the padlock plate to move within the padlock slide hole.

[0020] The control box has a sliding guide rail in the sliding groove of the toggle block, which cooperates with the sliding slot on the toggle block to ensure the sliding connection between the toggle block and the control box. The front of the control box has an operation mode control protrusion, and the toggle block has an operation mode control groove corresponding to the operation mode control protrusion. The operation mode control groove cooperates with the operation mode control protrusion to ensure that the toggle block switches between the corresponding operation mode positions during the back and forth sliding of the toggle block in the sliding groove of the control box. The micro switch is installed in the micro switch mounting groove on the side of the control box. The opening of the padlock sliding groove hole on the control box is provided with a padlock pull cover limiting protrusion to limit the stroke position of the padlock pull cover.

[0021] The toggle block is provided with a micro switch trigger protrusion for linkage with the micro switch, and a toggle block limiting plate is provided at the bottom of the tail of the toggle block to prevent the toggle block from falling out of the toggle block sliding groove.

[0022] The top of the padlock plate is provided with a connecting baffle that is connected to the connecting slot on the padlock cover. A stop plate is provided at the bottom of the padlock plate. The padlock plate is provided with a padlock hole for padding.

[0023] One end of the padlock plate return spring is installed in the padlock plate return spring mounting hole on the padlock plate, and the other end is installed in the spring mounting hole on the control box.

[0024] Furthermore, the operation mode locking module includes a cam and a rocker arm. The cam is mounted on the main shaft of the automatic changeover switch operating mechanism and can be driven by the main shaft to rotate back and forth. The rocker arm is rotatably mounted on the bracket. The cam is provided with a driving surface, and the rocker arm is provided with a linkage surface that corresponds to and contacts the driving surface. As the cam rotates back and forth with the main shaft, it can drive the linkage surface through the driving surface to make the rocker arm rotate back and forth around the rotation center. Balance springs are connected to both sides of the rocker arm to keep the rocker arm under force balance when it is driven by the cam to rotate. The upper end of the rocker arm is provided with a left limit protrusion and a right limit protrusion. An unlocking notch is provided between the left limit protrusion and the right limit protrusion. As the cam rotates back and forth with the main shaft, the left limit protrusion, the right limit protrusion, and the unlocking notch respectively act on the stop plate on the padlock plate, so that the padlock plate can only be pulled out of the padlock slide hole to realize padlock when the automatic changeover switch is in the double position.

[0025] Beneficial effects

[0026] The present invention provides an automatic transfer switch device, which, through a redesign of the structure of the automatic transfer switch device, has the following advantages compared with existing automatic transfer switch devices:

[0027] (1) Modular design, simple and convenient installation, flexible configuration;

[0028] (2) Use the same part to achieve different functions, reduce the number of parts and save costs;

[0029] (3) The front of the mask has a handle receiving cavity and clear markings. After manual operation, the handle must be put back before operation can be performed to avoid the problem of the handle being easily lost after manual operation.

[0030] (4) The padlock plate can only be pulled out for padlocking when the switch is in the double open position, ensuring the safety and reliability of on-site maintenance for users;

[0031] (5) This reduces the operating force required to operate the switch device on the panel;

[0032] (6) The linkage mechanism between the three position states of automatic, manual and padlock is interconnected, which avoids the misoperation of other position states when a certain position state is in one position state. Attached Figure Description

[0033] Appendix Figure 1 This is a schematic diagram of the overall assembly of the switching device in an embodiment of the present invention;

[0034] Appendix Figure 2 This is a schematic diagram of the installation structure of the hidden door structure in an embodiment of the present invention;

[0035] Appendix Figure 3 This is a schematic diagram of the mask structure in an embodiment of the present invention;

[0036] Appendix Figure 4 This is a schematic diagram of the hidden door mechanism in an embodiment of the present invention;

[0037] Appendix Figure 5 This is a schematic diagram of the handle assembly, operation mode control module, and operation mode locking module in an embodiment of the present invention;

[0038] Appendix Figure 6 This is a schematic diagram of the operation mode control module structure in an embodiment of the present invention;

[0039] Appendix Figure 7 This is a schematic diagram of the handle assembly structure in an embodiment of the present invention;

[0040] Appendix Figure 8a This is a schematic diagram of the handle box structure in an embodiment of the present invention;

[0041] Appendix Figure 8b This is a schematic diagram of the control box structure in an embodiment of the present invention;

[0042] Appendix Figure 9a This is a schematic diagram of the toggle block structure in an embodiment of the present invention. Figure 1;

[0043] Appendix Figure 9b This is a schematic diagram of the toggle block structure in an embodiment of the present invention. Figure 2 ;

[0044] Appendix Figure 10 This is a schematic diagram of the padlock plate pull-out structure in an embodiment of the present invention;

[0045] Appendix Figure 11 This is a schematic diagram of the padlock plate structure in an embodiment of the present invention;

[0046] Appendix Figure 12 This is a schematic diagram of the cam structure in an embodiment of the present invention;

[0047] Appendix Figure 13 This is a schematic diagram of the rocker arm structure in an embodiment of the present invention;

[0048] Appendix Figure 14 This is a schematic diagram of the handle structure in an embodiment of the present invention;

[0049] Appendix Figure 15a This is an exploded view of the handle locking and unlocking components in an embodiment of the present invention;

[0050] Appendix Figure 15b This is a schematic diagram of the handle locking / unlocking component in a retracted state in an embodiment of the present invention;

[0051] Appendix Figure 15c This is a schematic diagram of the handle locking / unlocking component in the expanded state in an embodiment of the present invention;

[0052] Appendix Figure 16a This is a schematic diagram of the handle assembly and operation mode control module in automatic mode in an embodiment of the present invention. Figure 1 ;

[0053] Appendix Figure 16b This is a schematic diagram of the handle assembly and operation mode control module in automatic mode in an embodiment of the present invention. Figure 2 ;

[0054] Appendix Figure 16c This is an inner schematic diagram of the operation mode control module in the automatic state in an embodiment of the present invention;

[0055] Appendix Figure 17a This is a schematic diagram of the handle assembly and operation mode control module in manual mode in this embodiment of the invention. Figure 1 ;

[0056] Appendix Figure 17b This is a schematic diagram of the handle assembly and operation mode control module in manual mode in this embodiment of the invention. Figure 2 ;

[0057] Appendix Figure 18aThis is a schematic diagram of the handle assembly and operation mode control module in a padlock state in an embodiment of the present invention. Figure 1 ;

[0058] Appendix Figure 18b This is a schematic diagram of the handle assembly and operation mode control module in a padlock state in an embodiment of the present invention. Figure 2 ;

[0059] Appendix Figure 19 This is a schematic diagram of the dual-position state in an embodiment of the present invention;

[0060] Appendix Figure 20 This is a schematic diagram of the power-on state in an embodiment of the present invention. Detailed Implementation

[0061] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0062] In the description of this invention, it should be noted that the terms "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0064] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0065] Example

[0066] As attached Figure 1 and 5As shown, an automatic changeover switch device includes a face mask 1 and a bracket 2, which are assembled together. The face mask 1 has a manual operation opening area 1a. The bracket 2 is equipped with a handle assembly 3 and an operation mode control module 4. The handle assembly 3 and the operation mode control module 4 are linked. When the operation mode control module 4 is in different operating states, it can lock or unlock the handle assembly 3 accordingly. A hidden door mechanism 5 is provided on the bracket 2 at a position corresponding to the manual operation opening area 1a. When the handle assembly 3 is in the locked or unlocked state, the hidden door mechanism 5 can close or open the manual operation opening area 1a accordingly. The operation mode control module 4 is connected to an operation mode locking module 6, which ensures that the operation mode control module 4 can only perform padlocking when the automatic changeover switch is in the double-open position. In this embodiment, the face mask 1 and the bracket 2 are assembled together to form a frame, and the handle assembly 3, the operation mode control module 4, the hidden door mechanism 5, and the operation mode locking module 6 are located inside the frame structure.

[0067] To better understand the structure and operation of this automatic transfer switch, the following detailed description of each component is provided in conjunction with the accompanying drawings:

[0068] As attached Figure 3 As shown, the mask 1 is provided with a handle receiving hole 1b, a toggle receiving hole 1c, and a padlock receiving hole 1d. The handle 3b is placed in the handle receiving hole 1b and can move back and forth. The toggle part 4b01 of the toggle 4b is located in the toggle receiving hole 1c and can be toggled back and forth. The padlock plate pull cover 4e is located in the padlock receiving hole 1d and can pull the padlock plate 4d out of the padlock receiving hole 1d. In this embodiment, the toggle part 4b01 is protruding.

[0069] The hidden door mechanism 5 includes, as shown in the appendix Figure 4 The hidden door 5a shown is attached. Figure 2 As shown, the hidden door 5a is rotatably mounted inside the face shield 1, thereby correspondingly closing or opening the manual operation opening area 1a. The hidden door 5a is provided with a curved protrusion 5a01. The handle assembly 3 can drive the hidden door 5a to rotate in the corresponding operating mode via the curved protrusion 5a01. The hidden door 5a is connected to a hidden door return spring 5b, which can cause the hidden door 5a to rotate and return to its original position. The hidden door 5a is provided with a baffle 5a02, which is linked with a lever 4b to lock the lever 4b in the corresponding operating mode. One end of the hidden door return spring 5b is installed in the hidden door return spring mounting hole 5a03 on the back of the hidden door 5a, and the other end is installed in the hidden door return spring mounting hole 1e on the face shield 1.

[0070] As attached Figure 7 As shown, the handle assembly 3 includes a handle box 3a, which is fixedly mounted on the bracket 2. The handle 3b is housed in a handle receiving cavity 3a01 on the handle box 3a and can move back and forth. A handle locking / unlocking component 3c is provided at the bottom of the handle receiving cavity 3a01, which can lock or unlock the handle 3b in corresponding operating modes. The upper end of the handle 3b is linked to the operating mode control module 4, which can lock or unlock the handle 3b in corresponding operating modes. (See attached diagram) Figure 8a and 8b As shown, the handle box 3a has a connecting protrusion 3a02, and the control box 4a has a connecting groove 4a01 that matches the connecting protrusion 3a02. The connecting protrusion 3a02 is installed in the connecting groove 4a01, making the handle box 3a and the control box 4a L-shaped or T-shaped. When the handle 3b is placed in or pulled out of the handle receiving cavity 3a01, the handle 3b can correspondingly rotate the hidden door 5a by pressing the curved protrusion 5a01 or releasing the pressure on the curved protrusion 5a01. (See attached diagram) Figure 15a As shown, the handle locking and unlocking component 3c further includes a mounting housing 3c01, a pawl return spring 3c02, a limit lever 3c03, and a pawl 3c04. The mounting housing 3c01 is fixedly installed in the handle locking and unlocking component housing mounting groove 3a03 at the bottom of the handle receiving cavity 3a01 in the handle box 3a. The mounting housing 3c01 is provided with a mounting groove 3c0101. The pawl 3c04 is placed in the mounting groove 3c0101 and can move up and down. The mounting housing 3c01 is provided with a guide rail slot 3c0102. One end of the limiting lever 3c03 is connected to the pawl 3c04, and the other end corresponds to the guide rail slot 3c0102. The guide rail slot 3c0102 can limit the stroke position of the pawl 3c04 in the mounting groove 3c0101, thereby limiting the up and down movement position of the pawl 3c04. One end of the pawl return spring 3c02 is installed in the mounting groove 3c0101, and the other end abuts against the pawl 3c04 to provide a return force for the pawl 3c04.

[0071] As attached Figure 15a As shown in 15b and 15c, in this embodiment, an elastic pawl 3c0401 extends from the pawl 3c04, as shown in the attached figure. Figure 14As shown, the lower end of the handle 3b is provided with a handle limiting groove 3b01 corresponding to the elastic pawl 3c0401. During the up-and-down movement of the handle 3b in the handle receiving cavity 3a01, it can be linked with the pawl 3c04 to move in the mounting groove 3c0101. During the up-and-down movement of the pawl 3c04 in the mounting groove 3c0101, the elastic pawl 3c0401 can retract and extend into the handle limiting groove 3b01 or expand and exit the handle limiting groove 3b01, thereby locking or unlocking the handle 3b.

[0072] As attached Figure 6 As shown, the operation mode control module 4 includes a control box 4a, which is fixedly mounted on the bracket 2. A toggle block 4b is installed in a toggle block sliding groove 4a02 on the control box 4a and can slide back and forth. In this embodiment, a sliding guide rail 4a0201 is provided in the toggle block sliding groove 4a02 on the control box 4a, which cooperates with the sliding slot 4b04 on the toggle block 4b to ensure the sliding connection between the toggle block 4b and the control box 4a. A micro switch 4c is installed on the control box 4a. During the back and forth sliding of the toggle block 4b in the toggle block sliding groove 4a02 on the control box 4a, the micro switch 4c can be linked to output a corresponding operation mode signal, as shown in the attached figure. Figure 6 and 9a As shown in Figure 9b, one end of the lever 4b is provided with a handle locking hole 4b02, and the upper end of the handle 3b is provided with a handle locking slot 3b02 corresponding to the handle locking hole 4b02. During the back-and-forth sliding of the lever 4b within the lever sliding groove 4a02 on the control box 4a, the lever 4b can move in and out of the handle locking slot 3b02 through the edge of the handle locking hole 4b02 to lock or unlock the handle 3b in the corresponding operating mode. The control box 4a is provided with a padlock sliding groove hole 4a03, as shown in the attached figure. Figure 11 The padlock plate 4d shown is installed in the padlock slide groove hole 4a03 and can slide back and forth to cover or expose the padlock hole 4d01. The lever 4b is provided with a lever limit plate 4b03, and the padlock plate 4d is provided with a padlock plate baffle 4d02 corresponding to the lever limit plate 4b03. During the back and forth sliding of the lever 4b in the lever slide groove 4a02 on the control box 4a, it can achieve interlocking or unlocking with the padlock plate 4d in the corresponding operating mode through the cooperation of the lever limit plate 4b03 and the padlock plate baffle 4d02. The padlock plate 4d is connected to a padlock plate return spring to provide a return force for itself to return to the padlock slide groove hole 4a03. Further, for ease of operation, as shown in the attached... Figure 6 As shown, the padlock plate 4d is connected to the attached... Figure 10The padlock plate cover 4e shown is capable of pulling the padlock plate 4d within the padlock slide hole 4a03.

[0073] Furthermore, in this embodiment, in order to realize the functions of each part of the operation mode control module, as shown in the attached figure... Figure 8b As shown, the specific structure of each component is as follows: The front of the control box 4a is provided with an operation mode control protrusion 4a04, as shown in the attached figure. Figure 9a The toggle block 4b shown has an operation mode control groove 4b05 corresponding to the operation mode control protrusion 4a04. The operation mode control groove 4b05 cooperates with the operation mode control protrusion 4a04 to ensure that the toggle block 4b switches between corresponding operation mode positions during the back-and-forth sliding of the toggle block 4b in the toggle block sliding groove 4a02 on the control box 4a. The micro switch 4c is installed in the micro switch mounting groove 4a05 on the side of the control box 4a. The opening of the padlock sliding groove hole 4a03 on the control box 4a is provided with a padlock pull cover limiting protrusion 4a0301 to limit the stroke position of the padlock pull cover 4e. The toggle block 4b has a micro switch triggering protrusion 4b06 for linkage with the micro switch 4c. The toggle block limiting plate 4b03 is provided at the bottom of the tail of the toggle block 4b to prevent the toggle block 4b from falling out of the toggle block sliding groove 4a02. The top of the padlock plate 4d is provided with a connecting baffle 4d03, which cooperates with the connecting slot 4e01 on the padlock cover 4e. A stop plate 4d04 is provided at the bottom of the padlock plate 4d. The padlock plate 4d has a padlock hole 4d01 for padlocking. One end of the padlock plate return spring is installed in the padlock plate return spring mounting hole 4d05 on the padlock plate 4d, and the other end is installed in the spring mounting hole 4a05 on the control box 4a.

[0074] As attached Figure 6 As shown, in this embodiment, the operation mode locking module 6 includes a cam 6a and a rocker arm 6b. The cam 6a is mounted on the main shaft 7 of the automatic changeover switch operating mechanism and can be driven by the main shaft 7 to rotate back and forth. The rocker arm 6b is rotatably mounted on the bracket 2, as shown in the attached figure. Figure 12 As shown, the cam 6a is provided with a driving surface 6a01, as illustrated in the attached figure. Figure 13As shown, the rocker arm 6b has a linkage surface 6b01 that corresponds to the driving surface 6a01. During the reciprocating rotation of the main shaft 7, the cam 6a can drive the linkage surface 6b01 through the driving surface 6a01, causing the rocker arm 6b to rotate back and forth around the rotation center. Balance springs 6c are connected to both sides of the rocker arm 6b to maintain force balance when the rocker arm 6b is driven to rotate by the cam 6a. A left limiting protrusion 6b02 is provided on the upper side of the rocker arm 6b. A right limiting protrusion 6b03 is provided, and an unlocking notch 6b04 is provided between the left limiting protrusion 6b02 and the right limiting protrusion 6b03. As the cam 6a rotates back and forth with the main shaft 7, the left limiting protrusion 6b02, the right limiting protrusion 6b03 and the unlocking notch 6b04 respectively act on the stop plate 4d04 on the padlock plate 4d, so that the padlock plate 4d can only be pulled out of the padlock slide hole 4a03 to realize padlock when the automatic changeover switch is in the double position.

[0075] As attached Figure 1 As shown in 4, 5, and 16a, 16b, and 16c, when the toggle part 4b01 on the front of the toggle block 4b is moved to the top of the control box 4a, the microswitch trigger protrusion 4b06 on the side of the toggle block 4b releases the toggle of the microswitch 4c. At this time, the microswitch 4c transmits a signal to the controller, the control signal is received, and the switch is in the "automatic" position. At this time, the lower end of the handle locking hole 4b02 on the toggle block 4c is located in the handle locking slot 3b02 on the upper end of the handle 3b, and the handle 3b cannot be pulled out. The curved protrusion 5a01 on the hidden door 5a contacts the outer edge of the handle 3b, and the hidden door 5a is closed by the pushing force of the curved protrusion 5a01. The manual operation opening area 1a is blocked, and the padlock plate baffle 4d02 on the padlock plate 4d cannot be pulled out for padlocking due to the action of the toggle block limiting plate 4b03.

[0076] As attached Figure 1As shown in 5, 6, 17a, and 17b, when the toggle part 4b01 on the toggle block 4b is moved so that the toggle block 4b is in the middle position of the control box 4a in the "manual" position, the micro switch trigger protrusion 4b06 contacts the toggle piece of the micro switch 4c. At this time, the micro switch 4c is turned on, and the controller receives a signal to exit control. At this time, the limit of the handle locking slot 3b02 located at the upper end of the handle 3b is released. Pressing the handle 3b pushes the handle 3b due to the handle locking unlocking part 3c. The force causes the mask 1 to be ejected about 5-10 mm from its surface, making it easy to pull out. After the handle 3b is pulled out, the limit of the hidden door 5a is released. Under the force of the hidden door reset spring 5b, it rotates inward and opens, exposing the manual operation opening area 1a on the mask 1. At this time, the manual operation lever on the operating mechanism is exposed, allowing manual operation of the first power switch on, double switch off, and second power switch on. At this time, the limit of the padlock plate 4d has not yet been released, and it still cannot be pulled out. At this time, the baffle 5a02 set on the hidden door 5a contacts the sliding slot 4b04, preventing the toggle block 4b from moving. When the manual operation ends and the handle 3b is returned to the handle receiving cavity 3a01, the curved protrusion 5a01 set on the hidden door 5a is pushed by the downward movement of the handle 3b. The hidden door 5a rotates outward under the pushing force of the curved protrusion 5a01 until the handle 3b is returned. Press the handle 3b again, and the handle locking and unlocking part 3c retracts the elastic claw 3c0401 to lock the handle limiting slot 3b01 at the lower end of the handle 3b. At this time, the handle 3b is returned to its position, the hidden door 5a rotates to its position, and the manual operation opening area 1a is blocked again to prevent the handle 3b from being easily lost at the operation site.

[0077] As shown in Attachments 1, 6 and 18a, 18b, when the toggle block 4b is in the "padlock" position at the lower end of the control box 4a, the lever of the micro switch 4c is still pressed, and the controller is in the disengaged state. At this time, the upper end of the handle locking hole 4b02 on the toggle block 4b is located in the handle locking slot 3b02 at the upper end of the handle 3b, and the handle 3b cannot be pulled out. The curved protrusion 5a01 on the hidden door 5a contacts the outer edge of the handle 3b, and the hidden door 5a is pushed by the curved protrusion 5a01. When the force is applied in a closed state, the manual operation opening area 1a is blocked. At this time, the toggle block limiting plate 4b03 set on the toggle block 4b is located at the lower end of the padlock plate baffle 4d02, and the limit of the padlock plate 4d is released. The padlock plate 4d can be manually pulled out for padlocking. When the padlock plate 4d is pulled out, the toggle block limiting plate 4b03 set on the toggle block 4b is subjected to the action of the padlock plate baffle 4d02 set on the padlock plate 4d, and cannot be pushed upward, realizing the interlock between the three positions of "automatic", "manual" and "padlock".

[0078] Simultaneously, when cam 6a rotates with the operating mechanism to the positions of first power on, double off, and second power on, when the operating mechanism is in the first power on position, cam 6a rotates to the left with the operating mechanism. The linkage surface 6b01 of rocker arm 6b is subjected to force and rotates to the right. The upper end of rocker arm 6b is subjected to the force of balance spring 6c and rotates to the right, causing the left limit protrusion 6b02 on the left side of rocker arm 6b to contact the stop plate 4d04 on padlock plate 4d, preventing padlock plate 4d from being pulled out. (See attached diagram) Figure 19 As shown in the attached document Figure 20 As shown, when the operating mechanism is in the split position, the cam 6a rotates to the middle position, the limit of the rocker arm 6b is released, and it stops at the middle position under the action of the balance springs 6c at both ends. At this time, the stop plate 4d04 on the padlock plate 4d is located at the unlocking notch 6b04 on the rocker arm 6b, the limit of the stop plate 4d04 is released, and the padlock plate 4d can be pulled out. When the operating mechanism is in the second power-on position, the cam 6a rotates to the right with the operating mechanism, and the linkage surface 6b01 at the lower end of the rocker arm 6b is driven by the driving surface 6a01 and rotates to the left. The rocker arm 6b is rotated to the left by the force of the balance spring 6c, so that the right limit protrusion 6b03 on the right side of the rocker arm 6b contacts the stop plate 4d04 on the padlock plate 4d, so that the padlock plate 4d cannot be pulled out, ensuring that the padlock plate 4d can only be pulled out in the split position.

[0079] This automatic transfer switch device, through a redesign of its structure, reduces the operating force required for the operation buttons on the panel. Furthermore, the linkage mechanism between the automatic, manual, and padlock positions is interconnected, preventing accidental operation of other positions while in one position. The entire device has a simple structure, improving the reliability of position state implementation. Additionally, after manual operation, the handle must be returned before further operation can be performed, preventing the handle from being lost.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic transfer switch apparatus, characterized by: It includes a mask (1) and a support (2), the mask (1) and the support (2) are assembled together, the mask (1) is provided with a manual operation opening area (1a), the support (2) is provided with a handle assembly (3) and an operation mode control module (4), the handle assembly (3) and the operation mode control module (4) are linked, when the operation mode control module (4) is in different operation states, the operation mode control module (4) can lock or unlock the handle assembly (3) correspondingly, the support (2) is provided with a hidden door mechanism (5) corresponding to the manual operation opening area (1a), when the handle assembly (3) is in a locked or unlocked state, the hidden door mechanism (5) can close or open the manual operation opening area (1a) correspondingly, the operation mode control module (4) is connected with an operation mode locking module (6), the operation mode locking module (6) makes the operation mode control module (4) can only realize the padlock when the automatic switching switch is in the double split position; The mask (1) is provided with a dial block containing hole (1c), and the dialing part (4b01) of the dial block (4b) is located in the dial block containing hole (1c) and can be dialled back and forth; The hidden door mechanism (5) includes a hidden door (5a), the hidden door (5a) is rotatably assembled in the inside of the mask (1) to correspondingly close or open the manual operation opening area (1a), the hidden door (5a) is provided with a bent foot protrusion (5a01), the handle assembly (3) can drive the hidden door (5a) to rotate in the corresponding operation mode through the bent foot protrusion (5a01), the hidden door (5a) is connected with a hidden door reset spring (5b) to make the hidden door (5a) rotate reset, the hidden door (5a) is provided with a baffle (5a02), the baffle (5a02) is linked with the dial block (4b) to make the dial block (4b) be locked in the corresponding operation mode.

2. An automatic transfer switch apparatus as defined in claim 1, wherein: The mask (1) and the support (2) are assembled together to form a frame shape, the handle assembly (3), the operation mode control module (4), the hidden door mechanism (5) and the operation mode locking module (6) are located in the inside of the frame shape structure.

3. An automatic transfer switch apparatus as defined in claim 1, wherein: The mask (1) is provided with a handle containing hole (1b) and a padlock containing hole (1d), the handle (3b) is placed in the handle containing hole (1b) and can move back and forth, the padlock plate pull cover (4e) is located in the padlock containing hole (1d) and can pull out the padlock plate (4d) from the padlock containing hole (1d).

4. An automatic transfer switch apparatus as defined in claim 1, wherein: One end of the hidden door reset spring (5b) is assembled in the hidden door reset spring mounting hole (5a03) on the back of the hidden door (5a), and the other end is assembled in the hidden door reset spring mounting hole (1e) on the mask (1).

5. An automatic transfer switch apparatus as defined in claim 1, wherein: The handle assembly (3) comprises a handle box (3a) fixedly mounted on the support (2), a handle (3b) movably mounted in a handle accommodating cavity (3a01) of the handle box (3a), a handle locking and unlocking member (3c) provided at the bottom of the handle accommodating cavity (3a01) and capable of locking or unlocking the handle (3b) in a corresponding operation mode, and an upper end of the handle (3b) connected with the operation mode control module (4) and capable of being locked or unlocked in the corresponding operation mode.

6. An automatic transfer switch apparatus as defined in claim 5, wherein: The handle box (3a) is provided with a connecting protrusion (3a02), and the control box (4a) is provided with a connecting groove (4a01) matched with the connecting protrusion (3a02), the connecting protrusion (3a02) is mounted in the connecting groove (4a01) to make the handle box (3a) and the control box (4a) in L shape or T shape.

7. An automatic transfer switch apparatus as defined in claim 5, wherein: When the handle (3b) is placed in or pulled out of the handle accommodating cavity (3a01), the handle (3b) is correspondingly capable of rotating the hidden door (5a) by pressing or releasing the pressing of the bent leg protrusion (5a01).

8. An automatic transfer switch apparatus as defined in claim 5, wherein: The handle locking and unlocking member (3c) comprises a mounting shell (3c01), a pawl reset spring (3c02), a limiting lever (3c03) and a pawl (3c04), the mounting shell (3c01) is provided with a mounting groove (3c0101), the pawl (3c04) is movably arranged in the mounting groove (3c0101), the mounting shell (3c01) is provided with a guide rail slot (3c0102), one end of the limiting lever (3c03) is connected with the pawl (3c04), the other end is correspondingly connected with the guide rail slot (3c0102) and capable of being limited in the guide rail slot (3c0102) to limit the stroke position of the pawl (3c04) in the mounting groove (3c0101), one end of the pawl reset spring (3c02) is mounted in the mounting groove (3c0101), and the other end abuts against the pawl (3c04) to provide a reset force for the pawl (3c04).

9. An automatic transfer switch apparatus as defined in claim 8, wherein: The pawl (3c04) is provided with an elastic clamping paw (3c0401), a lower end of the handle (3b) is provided with a handle limiting clamping groove (3b01) corresponding to the elastic clamping paw (3c0401), the handle (3b) is movably arranged in the handle accommodating cavity (3a01) and capable of moving the pawl (3c04) in the mounting groove (3c0101), and the elastic clamping paw (3c0401) is capable of being retracted into the handle limiting clamping groove (3b01) or expanded out of the handle limiting clamping groove (3b01) to lock or unlock the handle (3b) during the up-and-down movement of the pawl (3c04) in the mounting groove (3c0101).

10. An automatic transfer switch apparatus as defined in claim 9, wherein: The mounting shell (3c01) is fixedly installed in the handle lock / unlock element shell mounting slot (3a03) at the bottom of the handle accommodating cavity (3a01) in the handle box (3a).

11. An automatic transfer switch apparatus as defined in claim 1, wherein: The operation mode control module (4) comprises a control box (4a) fixedly installed on the support (2), a dial block (4b) installed in a dial block sliding slot (4a02) on the control box (4a) and capable of sliding back and forth, a micro switch (4c) installed on the control box (4a), the dial block (4b) capable of linking the micro switch (4c) to output corresponding operation mode signals during back-and-forth sliding in the dial block sliding slot (4a02) on the control box (4a), the dial block (4b) provided with a handle locking hole (4b02) at one end, the handle (3b) provided with a handle locking clamping groove (3b02) corresponding to the handle locking hole (4b02), the dial block (4b) capable of realizing locking or unlocking of the handle (3b) in the corresponding operation mode by the hole edge of the handle locking hole (4b02) in and out of the handle locking clamping groove (3b02) during back-and-forth sliding in the dial block sliding slot (4a02) on the control box (4a), the control box (4a) provided with a padlock sliding slot hole (4a03), a padlock plate (4d) installed in the padlock sliding slot hole (4a03) and capable of sliding back and forth to realize shielding or exposure of a padlock hole (4d01), the dial block (4b) provided with a dial block limiting plate (4b03), the padlock plate (4d) provided with a padlock plate baffle (4d02) corresponding to the dial block limiting plate (4b03), the dial block (4b) capable of realizing interlocking or unlocking with the padlock plate (4d) in the corresponding operation mode by cooperation of the dial block limiting plate (4b03) and the padlock plate baffle (4d02) during back-and-forth sliding in the dial block sliding slot (4a02) on the control box (4a), and the padlock plate (4d) connected with a padlock plate return spring for providing a return force for itself to retreat into the padlock sliding slot hole (4a03).

12. An automatic transfer switch apparatus as defined in claim 11, wherein: The padlock plate (4d) is connected with a padlock plate pull cover (4e), and the padlock plate pull cover (4e) can pull the padlock plate (4d) to move in the padlock sliding slot hole (4a03).

13. An automatic transfer switch apparatus as defined in claim 11, wherein: The sliding guide rail (4a0201) in the dial block sliding groove (4a02) on the control box (4a) is matched with the sliding clamping groove (4b04) on the dial block (4b), which can ensure the sliding connection of the dial block (4b) and the control box (4a). The front surface of the control box (4a) is provided with an operation mode control protrusion (4a04), and the dial block (4b) is provided with an operation mode control groove (4b05) corresponding to the operation mode control protrusion (4a04). The operation mode control groove (4b05) and the operation mode control protrusion (4a04) can ensure the switching between the corresponding operation mode positions during the back-and-forth sliding of the dial block (4b) in the dial block sliding groove (4a02) on the control box (4a). The micro switch (4c) is installed in the micro switch installation groove (4a05) on the side surface of the control box (4a). The lock hole (4a03) on the control box (4a) is provided with a lock plate pull cover limiting protrusion (4a0301) at the hole opening, which is used to limit the stroke position of the lock plate pull cover (4e).

14. An automatic transfer switch apparatus as defined in claim 11, wherein: The dial block (4b) is provided with a micro switch trigger protrusion (4b06) for linkage with the micro switch (4c). The dial block limiting plate (4b03) is arranged at the tail bottom end of the dial block (4b) to prevent the dial block (4b) from falling out of the dial block sliding groove (4a02).

15. An automatic transfer switch apparatus as defined in claim 11, wherein: The top end of the lock plate (4d) is provided with a connecting baffle (4d03) connected with the connecting clamping groove (4e01) on the lock plate pull cover (4e). The stop plate (4d04) is arranged at the bottom of the lock plate (4d). The lock plate (4d) is provided with a lock hole (4d01) for hanging a lock.

16. An automatic transfer switch apparatus as defined in claim 11, wherein: One end of the lock plate reset spring is arranged in the lock plate reset spring mounting hole (4d05) on the lock plate (4d), and the other end is arranged in the spring mounting hole (4a05) on the control box (4a).

17. An automatic transfer switch apparatus as defined in claim 1, wherein: The operation mode locking module (6) comprises a cam (6a) and a rocker (6b), the cam (6a) is mounted on the main shaft (7) of the automatic transfer switch operating mechanism and can be driven by the main shaft (7) to rotate back and forth, the rocker (6b) is rotatably mounted on the bracket (2), the cam (6a) is provided with a driving surface (6a01), the rocker (6b) is provided with a linkage surface (6b01) corresponding to the driving surface (6a01), the cam (6a) can drive the linkage surface (6b01) to make the rocker (6b) rotate back and forth around the rotation center (o) through the driving surface (6a01) during the back and forth rotation of the main shaft (7), the rocker (6b) is connected with a balance spring (6c) on both sides for keeping the rocker (6b) balanced when it is driven to rotate by the cam (6a), the upper end side of the rocker (6b) is provided with a left limiting protrusion (6b02) and a right limiting protrusion (6b03), an unlocking gap (6b04) is arranged between the left limiting protrusion (6b02) and the right limiting protrusion (6b03), during the back and forth rotation of the cam (6a) along with the main shaft (7), the left limiting protrusion (6b02) and the right limiting protrusion (6b03) and the unlocking gap (6b04) correspondingly act on the stop plate (4d04) on the padlock plate (4d) respectively, so that the padlock plate (4d) can only be pulled out of the padlock sliding slot hole (4a03) to realize the padlock when the automatic transfer switch is in the double split position.

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