Electric control cabinet

Abstract

The application discloses an electric control cabinet, which comprises a cabinet body, a circuit unit, a first door, a second door, a control handle and a blocking piece. The circuit unit is accommodated in the cabinet body; the first door and the second door are connected to the cabinet body and can move between a closed position and an open position; the control handle is installed to the first door and can move between an on position and an off position; when the first door is in the closed position, the control handle is operatively coupled with the circuit unit to make the circuit unit close and open; the blocking piece is operatively coupled with the second door and can move under the drive of the second door; the blocking piece blocks the first door when the second door is in the open position so that the first door cannot reach the closed position, and the blocking piece unblocks the first door when the second door is in the closed position so that the first door can reach the closed position. The electric control cabinet avoids closing the circuit breaker when the second door is not closed, and reduces the safety risks such as electric shock injury.

Description

Technical Field

[0001] This application relates to an electrical control cabinet. Background Technology

[0002] Electrical control cabinets, as common electrical equipment, are used to integrate and house electrical components and switching parts, providing support and protection. Typically, the circuit breaker cannot be closed and energized until the cabinet door is closed; conversely, the cabinet door cannot be opened when the circuit breaker is closed and energized. This prevents operators from touching live components inside the cabinet when it is powered on, thus achieving the function of electric shock protection and personnel safety. Summary of the Invention

[0003] Through long-term observation and research, the inventors of this application have discovered that for electrical control cabinets with two doors, left and right, the control handle is generally located on the left door and operates to turn the circuit unit on and off when the left door is closed. In order to prevent the circuit unit from being powered on by the closed left door before the right door is closed, thus exposing the live parts inside the cabinet, the prior art uses electronic control (such as by adding limit switches or using program control) to ensure that the circuit unit can only be powered on after the right door is closed. However, this method requires the addition of additional circuits or control components, which is costly and complex in structure.

[0004] To at least partially solve the above-mentioned technical problems, according to one aspect of this application, an electrical control cabinet is provided, including a cabinet body, a circuit unit, a first door, a second door, a control handle, and a blocking element. The circuit unit is housed in the cabinet and can be disconnected and closed; the first door is connected to the cabinet and can move between a first door closed position and a first door open position; the second door is connected to the cabinet and can move between a second door closed position and a second door open position; a control handle is mounted on the first door and can move between an on position and a off position, wherein when the first door is in the first door closed position, the control handle is operatively connected to the circuit unit to close and disconnect the circuit unit by moving between the on and off positions; a stop is operatively connected to the second door and can move under the drive of the second door, the stop being configured to block the first door so that it cannot reach the first door closed position when the second door is in the second door open position, and to release the obstruction of the first door so that it can reach the first door closed position when the second door is in the second door closed position.

[0005] According to some examples of this application, a mating blocking member is provided on the inner side of the first door, which is configured to cooperate with the blocking member to achieve blocking and unblocking of the first door.

[0006] According to some examples of this application, the blocking element is slidably mounted on the cabinet.

[0007] According to some examples of this application, the electrical control cabinet also includes a slide rail disposed on the bottom of the cabinet, through which the blocking member is mounted on the cabinet.

[0008] According to some examples of this application, the electrical control cabinet also includes a pull rod that operatively connects the stop to the second door.

[0009] According to some examples of this application, the blocking member is rotatably connected to the pull rod at its first end and includes a blocking portion near its second end and an extension located between the first end and the blocking portion; wherein, in the height direction of the cabinet, the blocking portion at least partially overlaps with the mating blocking member, and the extension is lower than the mating blocking member; and wherein the pull rod is rotatably connected to the second door.

[0010] According to some examples of this application, the blocking member is also configured to cooperate with the mating blocking member to prevent the second door from leaving the second door closed position when the second door is in the second door closed position and the first door is in the first door closed position.

[0011] According to some examples of this application, the circuit unit includes an operating lever; wherein, when the first door is in the closed position, the operating lever is connected to the control handle and is movable under the drive of the control handle to close and open the circuit unit.

[0012] According to some examples of this application, the control handle is provided with a hole to receive the operating lever, wherein the outer contour of the operating lever and the inner contour of the hole are matched in shape and are anti-rotational.

[0013] According to some examples of this application, the circuit unit is a circuit breaker.

[0014] The electrical control cabinet of this application, through the cooperation of the blocking component with the first door, enables the second door to prevent the first door, which controls the power supply, from closing when it is in the open position, thereby preventing the circuit unit from being powered on when the second door is not closed.

[0015] Furthermore, this application achieves the above functions solely through mechanical structure, eliminating the need for additional components such as limit switches in the electrical control cabinet or for program control. It features a simple structure, low cost, and high reliability. Attached Figure Description

[0016] Figure 1A This is a perspective view of an electrical control cabinet according to an embodiment of this application; Figure 1B for Figure 1A The image shown is a 3D view of the electrical control cabinet behind its hidden door. Figure 2A for Figure 1A A schematic diagram showing the internal view of the electrical control cabinet from the cabinet door and bottom; Figure 2B for Figure 1A The diagram shows a cross-sectional view of the electrical control cabinet along section line AA; Figure 3A for Figure 1A A perspective view of the electrical control cabinet with the first door in the open position; Figure 3B for Figure 3A A schematic diagram showing the internal view of the electrical control cabinet from the cabinet door and bottom; Figure 3C for Figure 3A The diagram shows a cross-sectional view of the electrical control cabinet along section line BB; Figure 4A for Figure 1A A perspective view of the second door of the electrical control cabinet in the open position; Figure 4B for Figure 4A A schematic diagram showing the internal view of the electrical control cabinet from the cabinet door and bottom; Figure 4C for Figure 4A The diagram shows a cross-sectional view of the electrical control cabinet along section line CC.

[0017] It should be understood that the accompanying drawings are not necessarily drawn to scale, and some parts may be exaggerated to highlight the structural details of this application. Detailed Implementation

[0018] Various specific embodiments of this application will now be described with reference to the accompanying drawings, which form part of this specification. It should be understood that although directional terms such as "front," "rear," "upper," "lower," "left," "right," "top," and "bottom" are used in this application to describe various exemplary structural parts and elements, their use is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this application can be arranged in different orientations, these directional terms are for illustrative purposes only and should not be considered as limiting.

[0019] Figure 1A-1B An electrical control cabinet 100 according to an embodiment of this application is shown, wherein the cabinet doors (first door 112 and second door 114) are in the closed position. Figure 1A This is a 3D view of the electrical control cabinet 100. Figure 1B for Figure 1A The image shown is a 3D view of the electrical control cabinet 100 hidden behind the cabinet door.

[0020] like Figure 1A-1BAs shown, the electrical control cabinet 100 includes a cabinet body 104 and cabinet doors connected to the cabinet body 104. The cabinet body 104 has opposing top walls 131 and bottom walls 132, opposing front walls 134 and rear walls 135, and opposing left side walls 136 and right side walls 137. Two door openings are formed in the front wall 134. The cabinet doors include a first door 112 and a second door 114, which are respectively connected to the front wall 134 of the cabinet body 104 and are used to open and close the two door openings respectively. The first door 112 has a first closed position and a first open position, and is movable between the first closed position and the first open position. The second door 114 has a second closed position and a second open position, and is movable between the second closed position and the second open position. In the illustrated embodiment, the first door 112 and the second door 114 are hinged to the front wall 134 and rotate between the open and closed positions.

[0021] Those skilled in the art will understand that although the cabinet doors in the illustration open to the left and right, in some other embodiments, the cabinet doors may also open to other directions.

[0022] Continue as Figure 1A-1B As shown, the electrical control cabinet 100 also includes a circuit unit 102 and a control handle 122. In some embodiments, the circuit unit 102 is a circuit breaker. The circuit unit 102 is housed in the cabinet 104 and can be opened and closed to control the power supply and disconnection of electrical components in the cabinet 104. The control handle 122 is mounted on the first door 112 and has an on position and an off position, and is movable between the on position and the off position. When the first door 112 is in the first door closed position, the control handle 122 is operatively connected to the circuit unit 102 to close and open the circuit unit 102 by moving between the on position and the off position. The circuit unit 102 includes an operating lever 142, which is connected to the control handle 122 when the first door 112 is in the first door closed position and is movable under the drive of the control handle 122 to close and open the circuit unit 102. In some embodiments, the control handle 122 is rotatable relative to the first door 112. When the operator rotates the control handle 122, the control handle 122 can drive the operating lever 142 to rotate, thereby closing or opening the circuit unit 102.

[0023] Those skilled in the art will understand that in some other embodiments, the control handle 122 may also be configured to perform other movements relative to the first door 112, such as translation, and drive the operating lever 142 to move through translation, thereby closing or opening the circuit unit 102.

[0024] Figure 2A-4CThe electrical control cabinet 100 is shown in three states from an internal perspective: the first door 112 and the second door 114 are both in the closed position; the first door 112 is in the open position and the second door 114 is in the closed position; and the first door 112 and the second door 114 are both in the open position.

[0025] Figure 2A-2B This is a view of the electrical control cabinet 100 with both the first door 112 and the second door 114 in the closed position. Figure 2A This is the internal view of the electrical control cabinet 100 facing the cabinet door and bottom 132. Figure 2B for Figure 1A The electrical control cabinet 100 is shown in a cross-sectional view along the cutting line AA.

[0026] like Figure 2A-2B As shown, the electrical control cabinet 100 also includes a blocking member 206, which is operably connected to the second door 114 and can move under the drive of the second door 114. When the second door 114 is in the open position, the blocking member 206 prevents the first door 112 from reaching the closed position. When the second door 114 is in the closed position, the blocking member releases the obstruction of the first door 112, allowing it to reach the closed position. Thus, the first door 112 can only close after the second door 114 is closed, ensuring that the circuit unit 102 is closed by the control handle 122 on the first door 112 only when both the first door 112 and the second door 114 are in the closed position. Furthermore, the blocking member 206 can also cooperate with the first door 112 to prevent the second door 114 from leaving the closed position after both the second door 114 and the first door 112 are in the closed position, further ensuring that the second door will not be opened after the circuit unit 102 is closed.

[0027] The electrical control cabinet 100 also includes a pull rod 202 and a slide rail 204. The slide rail 204 is disposed on the bottom 132 of the cabinet body 104, and the blocking member 206 is slidably mounted on the cabinet body 104 via the slide rail 204, thereby enabling it to reciprocate linearly along the bottom 132 of the cabinet body 104. The pull rod 202 is rotatably connected to the second door 114 at its first end 202a, and the blocking member 206 is rotatably connected to the second end 202b of the pull rod 202 at its first end 206a, thereby operably connecting the pull rod 202 to the blocking member 206 and the second door 114.

[0028] Continue as Figure 2A-2BAs shown, the blocking member 206 includes a blocking portion 212 near its second end 206b and an extension portion 211 located between its first end 206a and the blocking portion 212. A mating blocking member 214 is provided on the inner side of the first door 112, which cooperates with the blocking member 206 to block and release the first door 112. In the illustrated embodiment, both the blocking portion 212 and the mating blocking member 214 of the blocking member 206 are blocks. In the height direction of the cabinet 104, the blocking portion 212 and the mating blocking member 214 at least partially overlap, and the height of the top surface of the extension portion 211 is lower than the height of the bottom surface of the mating blocking member 214.

[0029] During the movement of the first door 112, the mating blocking member 214 has an interference position and a non-interference position. When the first door 112 is in the first door closed position, the mating blocking member 214 is in the interference position; when the first door 112 is in the first door open position, the mating blocking member 214 is in the non-interference position. Since the blocking part 212 and the mating blocking member 214 overlap at least partially in the height direction, the blocking part 212 can interfere with the movement of the mating blocking member 214. This allows the blocking part 212 to prevent the mating blocking member 214 from moving to the interference position when the second door 114 is in the second door open position, thereby preventing the first door 112 from moving to the first door closed position. Similarly, the mating blocking member 214 can also interfere with the movement of the blocking part 212. This allows the mating blocking member 214, in the interference position, to prevent the second door 114 from leaving the second door closed position when both the first door 112 and the second door 114 are in the second door closed position. Since the extension 211 is lower than the mating stop 214 in the height direction, the extension 211 will not interfere with the movement of the mating stop 214. Specifically, when both the first door 112 and the second door 114 of the control cabinet 100 are in the closed position, the stop 206 is at the rightmost end of the sliding position shown in the figure on the slide rail 204. The mating stop 214, which is in the interference position, is located to the left of the blocking part 212 of the stop 206 and is partially above the extension 211. This prevents the blocking part 212 from sliding to the left along the slide rail 204 due to the restriction of the mating stop 214. Therefore, the pull rod 202 cannot pull the stop 206, and the second door 114 cannot be opened. At the same time, since the stop 206 is at the rightmost end of the sliding position on the slide rail 204, the movement of the mating stop 214 between the interference position and the non-interference position is not affected by the stop 206. Therefore, the first door 112 can move from the first door closed position shown in the figure to the first door open position.

[0030] Continue as Figure 2AAs shown, the control handle 122 has a hole 252 at one end inside the first door 112 for receiving the operating lever 142. The outer contour of the operating lever 142 matches the inner contour of the hole 252 and is anti-rotational, such as square or hexagonal. Specifically, similar to the control handle 122, the operating lever 142 also has an on position and an off position, and can move between the on and off positions. Only when both the control handle 122 and the operating lever 142 are in the off position can the hole 252 of the control handle 122 receive the operating lever 142, thus enabling the control handle 122 to move the operating lever 142. If the control handle 122 is in the on position and the operating lever 142 is in the off position, the hole 252 of the control handle 122 cannot receive the operating lever 142. In this case, the control handle 122 needs to be rotated to the off position for the control handle 122 to receive the operating lever 142. In actual operation, when the first door 112 moves from the open position to the closed position and the control handle 122 is in the off position, the hole 252 of the control handle 122 can receive the operating lever 142. After receiving the operating lever 142, the movement of the control handle 122 between the on and off positions can drive the operating lever 142 to move, thereby closing or opening the circuit unit 102, so as to realize the power supply or power cut-off of the electrical components in the electrical control cabinet 100.

[0031] Figures 3A-3C The diagram shows the first door 112 of the electrical control cabinet 100 in the open position, wherein... Figure 3A This is a 3D view of the first door 112 of the electrical control cabinet 100 in the open position. Figure 3B This is a schematic diagram showing the internal view of the electrical control cabinet 100 from the cabinet door and bottom 132. Figure 3C for Figure 3A The diagram shows a cross-sectional view of the electrical control cabinet 100 along the section line BB.

[0032] like Figures 3A-3C As shown, when the first door 112 of the electrical control cabinet 100 is in the first door open position and the second door 114 is in the second door closed position, the mating blocking member 214 on the first door 112 is in a non-interference position that does not obstruct the movement of the blocking member 206. This allows the blocking member 206 to move freely on the slide rail 204. Therefore, the pull rod 202 can pull the blocking member 206, so that the second door 114 can move from the second door closed position to the second door open position as shown in the figure.

[0033] Figures 4A-4C The diagram shows the second door 114 of the electrical control cabinet 100 in the open position. Figure 4A This is a 3D view of the second door 114 of the electrical control cabinet 100 in the open position. Figure 4B This is a schematic diagram showing the internal view of the electrical control cabinet 100 from the cabinet door and bottom 132. Figure 4C for Figure 4A The diagram shows a cross-sectional view of the electrical control cabinet along section line CC.

[0034] like Figures 4A-4C As shown, when the second door 114 of the electrical control cabinet 100 is in the open position, the blocking part 212 of the blocking member 206 is in the middle sliding position shown in the figure on the slide rail 204. Since the blocking part 212 and the mating blocking member 214 overlap at least partially in the height direction, the blocking member 206 can prevent the mating blocking member 214 from moving to the interference position in this middle sliding position, thereby preventing the first door 112 from moving to the first door closed position. Thus, it is possible to prevent the first door 112 from closing when the second door 114 is in the open position, so that the control handle 122 and the operating lever 142 of the circuit unit 102 cannot be connected, thereby preventing the electrical components in the cabinet 104 from being energized by operating the control handle 122.

[0035] Those skilled in the art will understand that in some other embodiments, the electrical control cabinet 100 may also include a third door or even more doors as needed. Based on the same working principle that the second door 114 blocks the first door 112 from closing when the second door is open, the third door or even more doors may also be configured to block the first door 112 from closing when they are in their respective open positions. At the same time, based on the same working principle that the first door 112 blocks the second door 114 from opening when the first door is closed, the third door or even more doors may also be configured to be blocked and unable to open when the first door 112 is closed.

[0036] Those skilled in the art will understand that the control handle 122 includes a locking element and a handle (not shown) located outside the first door 112, wherein the locking element moves under the actuation of the handle. When the first door 112 is in the closed position, the control handle 122 can be set to the on or off position by manipulating the handle outside the first door 112 (e.g., turning the handle). In the on position, the handle drives the locking element to a position that locks the first door 112; in the off position, the handle drives the locking element to a position that unlocks the first door 112. The locking element can achieve the function of locking the first door 112 by interlocking with the cabinet 104 or the operating lever 142.

[0037] Although this application has been described with reference to examples of embodiments outlined above, various alternatives, modifications, variations, improvements, and / or substantially equivalents, whether known or currently or soon to be foreseen, will likely be apparent to those skilled in the art. Furthermore, the technical effects and / or technical problems described herein are exemplary and not limiting, and the disclosures herein may be used to solve other technical problems and have other technical effects and / or can solve other technical problems. Therefore, the examples of embodiments of this application as set forth above are intended to be illustrative and not limiting. Various changes can be made without departing from the spirit or scope of this application. Therefore, this application is intended to include all known or previously developed alternatives, modifications, variations, improvements, and / or substantially equivalents.

Claims

1. An electrical control cabinet (100), characterized in that... include: Cabinet (104); A circuit unit (102) is housed in the cabinet (104) and can be disconnected and closed; The first door (112) is connected to the cabinet (104) and is movable between the first door closed position and the first door open position; The second door (114) is connected to the cabinet (104) and is movable between the second door closed position and the second door open position; A control handle (122) is mounted on the first door (112) and movable between an on and off position, wherein when the first door (112) is in the closed position, the control handle (122) is operably connected to the circuit unit (102) to close and open the circuit unit (102) by moving it between the on and off positions; and A blocking member (206) is operably connected to the second door (114) and is movable under the drive of the second door (114). The blocking member (206) is configured to block the first door (112) from reaching the first door closed position when the second door (114) is in the second door open position, and to release the obstruction of the first door (112) from reaching the first door closed position when the second door (114) is in the second door closed position.

2. The electrical control cabinet as described in claim 1, characterized in that: The first door (112) has a mating blocking member (214) on its inner side. The mating blocking member (214) is configured to cooperate with the blocking member (206) to block and release the first door (112).

3. The electrical control cabinet as described in claim 2, characterized in that: The blocking element (206) is slidably mounted on the cabinet (104).

4. The electrical control cabinet as described in claim 3, characterized in that, Also includes: The slide rail (204) is provided on the bottom of the cabinet (104), and the blocking member (206) is installed on the cabinet (104) via the slide rail (204).

5. The electrical control cabinet as described in claim 3, characterized in that, Also includes: A lever (202) operably connects the stop (206) to the second door (114).

6. The electrical control cabinet as described in claim 5, characterized in that, The blocking member (206) is rotatably connected to the pull rod (202) at its first end (206a) and includes a blocking portion (212) and an extension (211) located between the first end (206a) and the blocking portion (212). In the height direction of the cabinet (104), the blocking portion (212) at least partially overlaps with the mating blocking member (214), and the extension portion (211) is lower than the mating blocking member (214); and The pull rod (202) is rotatably connected to the second door (114).

7. The electrical control cabinet as described in claim 1, characterized in that: The blocking member (206) is also configured to cooperate with the first door (112) to prevent the second door (114) from leaving the second door closed position when the second door (114) is in the second door closed position and the first door (112) is in the first door closed position.

8. The electrical control cabinet as described in claim 1, characterized in that, The circuit unit (102) includes: Control lever (142); When the first door (112) is in the closed position, the operating lever (142) is connected to the control handle (122) and can move under the drive of the control handle (122) to close and open the circuit unit (102).

9. The electrical control cabinet as described in claim 8, characterized in that: The control handle (122) has a hole (252) to receive the operating lever (142), wherein the outer contour of the operating lever (142) and the inner contour of the hole (252) are matched and are anti-rotation shapes.

10. The electrical control cabinet as described in claim 1, characterized in that: The circuit unit (102) is a circuit breaker.

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