A switchgear cabinet

Abstract

A switch cabinet includes: a cabinet body; a drawer movable relative to the cabinet body, wherein in a disconnected position both primary and secondary circuits are disconnected, in a test position the primary circuit is disconnected and the secondary circuit is conductive, and in a connected position both primary and secondary circuits are conductive and the drawer closes the cabinet body; a connector fixed to the cabinet body and electrically connected to an external power source; and a plug-in, wherein when the plug-in is in a first position the secondary circuit is disconnected and when the plug-in is in a second position the secondary circuit is conductive; wherein the switch cabinet further includes a plug-in base fixed to the drawer, the plug-in base causing the plug-in to move with the plug-in base when the drawer moves between the disconnected and test positions, and the plug-in no longer moves with the plug-in base when the drawer moves between the test and connected positions.

Description

Technical Field

[0001] This utility model relates to a switch cabinet, and more specifically, to a switch cabinet including secondary plug-in components. Background Technology

[0002] The switchgear can operate in three states: disconnected, test, and connected. In the disconnected state, both the primary and secondary circuits are open. In the test state, the primary circuit is open, but the secondary circuit is connected. In the connected state, both the primary and secondary circuits are connected. The switchgear can be switched between these three states by inserting and opening its drawers. In existing technology, the secondary circuit has a large number of contacts for electrical connection to an external power source, which results in relatively high manufacturing costs for the switchgear.

[0003] Therefore, it is hoped that a switch cabinet can be proposed to improve the shortcomings of the existing technology. Utility Model Content

[0004] According to one aspect of this utility model, a switch cabinet is provided, comprising: a cabinet body; a drawer capable of moving sequentially between a disconnected position, a test position, and a connected position relative to the cabinet body along an insertion direction, or sequentially between a connected position, a test position, and a disconnected position along an opening direction, wherein in the disconnected position, both the primary and secondary circuits are disconnected; in the test position, the primary circuit is disconnected and the secondary circuit is conductive; and in the connected position, both the primary and secondary circuits are conductive and the drawer closes the cabinet body; a connector fixed to the cabinet body and electrically connected to an external power source; and a plug-in configured to move between a first position and a second position relative to the connector, wherein when the plug-in is in the first position, the plug-in separates from the connector, thereby disconnecting the secondary circuit; and when the plug-in is in the second position, the plug-in is inserted into the connector, thereby conducting the secondary circuit; wherein the switch cabinet further comprises a plug-in base fixed to the drawer and operatively connected to the plug-in, such that when the drawer moves between the disconnected and test positions, the plug-in moves together with the plug-in base between the first and second positions; and when the drawer moves between the test and connected positions, the plug-in remains in the second position and no longer moves together with the plug-in base.

[0005] According to this scheme, when the drawer moves between the disconnected and test positions, the plug-in moves along with the plug-in base. When the drawer moves between the test and connected positions, the plug-in no longer moves with the plug-in base. This provides a simple and cost-effective way to switch the switch cabinet between the disconnected, test, and connected positions.

[0006] In some designs, the insert base may include two parallel grooves, and the insert has two parallel guide rails configured to slide within the corresponding grooves.

[0007] In some designs, one side of the slide rail may have an elastic structure. This elastic structure may have a main body, a recess at one end of the elastic structure along the insertion direction, and an elastic protrusion located between the main body and the recess. The protrusion protrudes inward and has a ramp extending inwardly along the insertion direction. The recess has a first vertical surface adjacent to the ramp and a second vertical surface opposite to the first vertical surface along the insertion direction. The first and second vertical surfaces extend inwardly perpendicular to the main body, respectively. The guide rail has a protrusion. When the drawer moves from the disconnected position toward the test position, the protrusion contacts the first vertical surface and is actuated in the insertion direction by the first vertical surface. When the drawer moves from the test position toward the connected position, the protrusion slides relative to the guide rail from the first vertical surface past the protrusion to the main body under the action of an external force, causing the insertion piece to separate from the insertion base. When the drawer moves from the connected position toward the test position, the protrusion travels along the ramp relative to the elastic structure and slides into the recess. When the drawer moves from the test position toward the disconnected position, the protrusion contacts the second vertical surface and is actuated in the opening direction by the second vertical surface.

[0008] According to this design, when the drawer moves between the disconnected and test positions, the protrusion of the plug-in is located in the recess of the plug-in base, causing the plug-in to move with the plug-in base. When the drawer moves between the test and connected positions, the protrusion of the plug-in is no longer located in the recess, causing the plug-in to no longer move with the plug-in base.

[0009] In some designs, the plug-in base may have a spring clip configured to hold the drawer.

[0010] According to this scheme, the spring can limit the swaying of the plug-in base in the lateral direction, thereby limiting the swaying of the plug-in in the lateral direction, and thus realizing the pre-tightening effect of the plug-in base on the plug-in.

[0011] In some designs, the connector-facing end of the plug-in may have a guide portion, and the connector-facing end of the plug-in may have a mating guide portion. The guide portion includes a guide plane and a guide ramp. The guide plane extends along the insertion direction, and the guide ramp is arranged adjacent to the guide plane along the insertion direction and extends outwardly at an angle along the insertion direction. The mating guide portion includes a mating guide plane, which extends along the insertion direction. When the plug-in and the connector are mated, the guide ramp guides the mating process to align the guide plane with the mating guide plane.

[0012] According to this scheme, the accurate mating between the plug and the connector is ensured through the cooperation between the guide part and the mating guide part.

[0013] In some designs, the connector may have a resilient hook, and the plug may have a protrusion with the resilient hook protruding toward the plug. When the plug is in the second position, the protrusion is arranged adjacent to the resilient hook along the insertion direction and is limited by the resilient hook. When the plug moves from the second position toward the first position, the protrusion squeezes the resilient hook and causes the resilient hook to deform, thereby passing over the resilient hook in the opening direction.

[0014] According to this design, when the plug and connector are mated, the elastic latch can prevent the plug from detaching from the connector.

[0015] In some designs, the connector can have a female interface and the plug-in can have a male interface, with the female interface and the corresponding male interface interlocking.

[0016] In some designs, the connector may include multiple pin sockets and / or RJ45 sockets, with corresponding multiple pin plugs and / or RJ45 plugs on the plug.

[0017] In some designs, the connector can be electrically connected to an external power source via an interface on the side wall of the cabinet.

[0018] In some schemes, the secondary circuit may include a motor protector and / or a fault indicator. Attached Figure Description

[0019] Figure 1 A schematic diagram of a switch cabinet according to an embodiment of the present invention is shown;

[0020] Figure 2 An exploded internal view of a switch cabinet according to an embodiment of the present invention is shown;

[0021] Figure 3 A schematic diagram of a plug-in base according to an embodiment of the present invention is shown;

[0022] Figure 4 Another schematic diagram of the plug-in base according to an embodiment of the present invention is shown;

[0023] Figure 5 A schematic diagram of a plug-in according to an embodiment of the present invention is shown;

[0024] Figure 6 A schematic diagram of a connector according to an embodiment of the present invention is shown;

[0025] Figure 7 A schematic diagram of a secondary plug-in according to an embodiment of the present invention is shown.

[0026] Figure Labels

[0027] 10 Switchgear

[0028] 12 cabinets

[0029] 14 drawers

[0030] 100 Plug-in Dock

[0031] 110 Elastic Structure

[0032] 120 Main Section

[0033] 130 Protrusion

[0034] 132 bevel

[0035] 140 recess

[0036] 141 end

[0037] 142 First Vertical Plane

[0038] 144 Second Vertical Plane

[0039] 150 shrapnel

[0040] 160 groove

[0041] 200 plugins

[0042] 210 Public Interface

[0043] 220 guide rail

[0044] 222 Protrusion

[0045] 230 Guidance Department

[0046] 232 Guide plane

[0047] 234 Guiding Incline

[0048] 240 Protrusion

[0049] 300 connector

[0050] 310 Female Interface

[0051] 320 Coordination and Guidance Department

[0052] 322 Matching guide plane

[0053] 324 Beveled Joint

[0054] 330 Flexible Hook

[0055] 340 Actuator Detailed Implementation

[0056] To make the objectives, solutions, and advantages of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0057] For clarity, unless otherwise explicitly stated, the directional terms used in this document are defined as follows: insertion direction refers to the direction in which the drawer is pushed into the cabinet; opening direction refers to the direction in which the drawer is pushed out of the cabinet; vertical direction refers to the vertical direction perpendicular to the horizontal plane; and horizontal direction refers to the direction perpendicular to both the insertion direction and the vertical direction.

[0058] Figure 1 A schematic diagram of a switch cabinet 10 according to an embodiment of the present invention is shown. The switch cabinet 10 mainly includes a cabinet body 12 and a drawer 14, which is movable relative to the cabinet body 12 in an insertion direction or an opening direction. During the movement of the drawer 14 relative to the cabinet body 12, the switch cabinet 10 can be in three different states: a disconnected state, a test state, and a connected state. When the drawer 14 is fully pulled out of the cabinet body 12 in the opening direction (i.e., the disconnected position), the switch cabinet 10 is in the disconnected state, and both the primary and secondary circuits in the switch cabinet 10 are disconnected. When the drawer 14 is pushed a distance in the insertion direction from the fully pulled-out position (i.e., the test position), the switch cabinet 10 is in the test state, and the primary circuit in the switch cabinet 10 is disconnected while the secondary circuit is connected. In the test state, components such as motor protectors and fault indicators (e.g., fault indicator lights) in the secondary circuit are energized. The operator can determine whether there is a fault in switch cabinet 10 based on the status of the fault indicator. If there is a fault in switch cabinet 10, the operation of inserting drawer 14 is suspended and switch cabinet 10 is inspected. If there is no fault in switch cabinet 10, the drawer 14 is inserted to make the primary circuit conductive. When drawer 14 is fully pushed into the cabinet 12 (i.e., the connected position), switch cabinet 10 is in the connected state, and both the primary and secondary circuits in switch cabinet 10 are conductive.

[0059] Figure 2An exploded internal view of a switch cabinet 10 according to an embodiment of the present invention is shown. The switch cabinet 10 also includes a plug-in base 100 fixed to a drawer 14, a plug-in 200 movable relative to a connector 300 to be inserted into or separated from the connector 300, and a connector 300 fixed to a cabinet body 12. The plug-in base 100, plug-in 200, and connector 300 together form a secondary plug-in for a secondary circuit. The connector 300 is electrically connected to an external power source, for example, via an interface on the side wall of the cabinet body 12. The plug-in 200 is electrically connected to components of the secondary circuit. When the plug-in 200 is inserted into the connector 300, the components of the secondary circuit (e.g., motor protectors and fault indicator lights) are energized; when the plug-in 200 is disconnected from the connector 300, the components of the secondary circuit are de-energized. Optionally, the connector 300 may be provided with a female interface 310, and the plug-in 200 may be provided with a male interface 210, with the female interface 310 inserting into the corresponding male interface 210. Furthermore, connector 300 may include multiple pin sockets and / or RJ45 sockets, and plug 200 is provided with corresponding multiple pin plugs and / or RJ45 plugs. It should be understood that this invention is not intended to limit the specific type and number of interfaces of connector 300 and plug 200; different interface modules can be easily installed and replaced.

[0060] The plug-in base 100 is operatively connected to the plug-in 200 to drive the plug-in 200 to move under certain conditions. Specifically, when the drawer 14 moves between the disconnected position and the test position, the plug-in base 100 drives the plug-in 200 to move together; however, when the drawer 14 moves between the test position and the connected position, the plug-in base 100 no longer drives the plug-in 200 to move together. In other words, when the drawer 14 moves between the test position and the connected position, the plug-in 200 is in an interlocked state with the connector 300 fixed to the cabinet 12 and no longer moves, while the plug-in base 100 continues to move with the drawer 14.

[0061] Figure 3A schematic diagram of a plug-in base 100 according to an embodiment of the present invention is shown. The plug-in base 100 may include two parallel sliding grooves 160, and the plug-in 200 is provided with two parallel guide rails 220, which are configured to slide in the corresponding sliding grooves 160. Specifically, an elastic structure 110 is formed on one side of the sliding groove 160. The elastic structure 110 may have a main body segment 120, a protrusion 130, a recess 140, and an end portion 141. The main body segment 120 occupies most of the length of the elastic structure 110, the recess 140 is provided at one end of the elastic structure 110 along the insertion direction, and the protrusion 130 is elastic and located between the main body segment 120 and the recess 140. The protrusion 130 protrudes inward and has a bevel 132 extending inwardly at an inclination along the insertion direction. The recess 140 has a first vertical surface 142 adjacent to the bevel 132 and a second vertical surface 144 opposite to the first vertical surface 142 along the insertion direction. The first vertical surface 142 and the second vertical surface 144 extend inwardly perpendicular to the main body section 120, respectively. The end portion 141 can be actuated by the actuating portion 340 of the connector 300, thereby undergoing outward elastic deformation to release the plug-in 200 from the elastic structure 110. The guide rail 220 of the plug-in 200 has a protrusion 222, which cooperates with the elastic structure 110 of the plug-in base 100 to realize the switching of the switch cabinet 10 between the disconnected state, the test state, and the connected state.

[0062] The following is combined Figure 7 The operation process of the switch cabinet 10 of this utility model is described in detail.

[0063] (1) Drawer 14 moves from the disconnected position toward the test position:

[0064] When drawer 14 is in the disconnected position, the protrusion 222 of plug-in 200 is located in the recess 140 of plug-in base 100 and contacts the first vertical surface 142. As drawer 14 is pushed into cabinet 12 in the insertion direction, protrusion 222 is pushed in by the first vertical surface 142 in the insertion direction, thereby causing plug-in 200 to move along with plug-in base 100 in the insertion direction. When drawer 14 is pushed into the test position, plug-in 200 and connector 300 are mated, thereby making the secondary circuit conductive.

[0065] (2) Drawer 14 moves from the test position toward the connection position:

[0066] When drawer 14 is in the test position, the protrusion 222 of plug 200 remains in the recess 140 of plug base 100. As drawer 14 continues to be pushed inward into cabinet 12, plug 200 is blocked by connector 300 and no longer moves in the insertion direction because plug 200 has already been inserted with connector 300, while plug base 100 continues to move in the insertion direction along with drawer 14. This causes plug 200 to move in the opening direction relative to plug base 100. Specifically, end 141 of elastic structure 110 is actuated by actuation part 340 of connector 300, thereby undergoing outward elastic deformation, so that elastic structure 110 releases plug 200. Protrusion 222 of plug 200 first slides relative to elastic structure 110 from first vertical plane 142 across the inclined surface 132 of protrusion 130 to body section 120, and then slides relative to plug base 100 in the opening direction on body section 120. When drawer 14 is pushed into the connection position, the primary circuit is activated and drawer 14 closes cabinet 12. At this time, plug 200 moves to the farthest position relative to plug base 100 in the opening direction.

[0067] (3) Drawer 14 moves from the connection position toward the test position:

[0068] When drawer 14 is in the connected position, plug 200 is at its furthest position relative to plug base 100 in the opening direction. As drawer 14 is pulled out of cabinet 12, plug 200 remains in an engaged state with connector 300 and remains stationary, while plug base 100 moves with drawer 14 in the opening direction, causing plug 200 to move relative to plug base 100 in the insertion direction. Specifically, protrusion 222 of plug 200 first moves relative to guide rail 110 on guide rail body section 120 in the insertion direction relative to plug base 100, and then slides across the ramp 132 of protrusion 130 into recess 140. When drawer 14 is pulled out to the test position, protrusion 222 of plug 200 is located in recess 140 of plug base 100.

[0069] (4) Drawer 14 moves from the test position toward the disconnected position:

[0070] When drawer 14 is in the test position, the protrusion 222 of plug-in 200 is located in the recess 140 of plug-in base 100 and contacts the second vertical surface 144. As drawer 14 is pulled out of cabinet 12 in the opening direction, the actuating part 340 of connector 300 disengages from elastic structure 110, causing end 141 of elastic structure 110 to return inward to its initial state, thus preventing elastic structure 110 from releasing plug-in 200. Protrusion 222 is pushed out by second vertical surface 142 in the opening direction, causing plug-in 200 to move with plug-in base 100 in the opening direction. When drawer 14 is pulled out to the disconnected position, plug-in 200 disengages from connector 300, thus disconnecting the secondary circuit.

[0071] Preferably, such as Figure 4 As shown, the plug-in base 100 may be provided with a spring piece 150, which is configured to hold the drawer 14. In this way, the spring piece 150 can limit the lateral movement of the plug-in base 100, thereby limiting the lateral movement of the plug-in 200, and thus achieving the pre-tightening effect of the plug-in base 100 on the plug-in 200. Thus, during the mating of the plug-in 200 and the connector 300, only the vertical movement freedom of the plug-in 200 needs to be considered. The vertical movement freedom of the plug-in 200 is constrained by the guide portion 230 of the plug-in 200 (described in detail below), thereby ensuring that the plug-in 200 can be smoothly mated into the connector 300.

[0072] Preferably, such as Figure 5 and Figure 6 As shown, the end of the plug-in 200 facing the connector 300 may be provided with a guide portion 230, and the end of the connector 300 facing the plug-in 200 may be provided with a mating guide portion 320. The guide portion 230 includes a guide plane 232 and a guide ramp 234. The guide plane 232 extends along the insertion direction, and the guide ramp 234 is arranged adjacent to the guide plane 232 along the insertion direction, extending outwardly at an angle. The mating guide portion 320 includes a mating guide plane 322, which extends along the insertion direction. When the plug-in 200 and the connector 300 are mated, the guide ramp 234 guides the mating process to align the guide plane 232 with the mating guide plane 322. After the plug-in 200 and the connector 300 are mated, the guide plane 232 contacts the mating guide plane 322, and the guide ramp 234 contacts the mating ramp 324. In this way, the accurate mating between the plug 200 and the connector 300 is ensured through the cooperation between the guide part 230 and the mating guide part 320.

[0073] Preferably, the connector 300 may be provided with a resilient hook 330, and the plug-in 200 may be provided with a protrusion 240, with the resilient hook 330 protruding toward the plug-in 200. When the plug-in 200 and the connector 300 are fully mated, the protrusion 240 is arranged adjacent to the resilient hook 330 along the insertion direction and is limited by the resilient hook 330. When the plug-in 200 moves from its mating position with the connector 300 along the opening direction to disengage from the connector 300, the protrusion 240 presses against the resilient hook 330 and causes the resilient hook 330 to deform, thereby passing over the resilient hook 330 along the opening direction. In this way, when the plug-in 200 and the connector 300 are fully mated, the resilient hook 330 can prevent the plug-in 200 from disengaging from the connector 300. When the plug 200 is pulled out of the connector 300, due to the elasticity of the elastic hook 330, the plug 200 can overcome the constraint of the elastic hook 330 under the action of external force (specifically, the thrust provided by the second vertical surface 144 of the plug base 100) and move together with the plug base 100 in the opening direction.

[0074] This document describes in detail several exemplary embodiments of the present disclosure with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present disclosure, and various technical features and structures proposed in the present disclosure can be combined without exceeding the protection scope of the present disclosure, the protection scope of the present disclosure being determined by the appended claims.

Claims

1. A switch cabinet, characterized in that, include: Cabinet; The drawer is capable of moving sequentially between a disconnected position, a test position, and a connected position relative to the cabinet body along the insertion direction, or sequentially between a connected position, a test position, and a disconnected position along the opening direction. In the disconnected position, both the primary and secondary circuits are disconnected. In the test position, the primary circuit is disconnected and the secondary circuit is connected. In the connected position, both the primary and secondary circuits are connected and the drawer closes the cabinet body. The connector is fixed to the cabinet and electrically connected to an external power source; The plug is configured to move between a first position and a second position relative to the connector. When the plug is in the first position, the plug is separated from the connector, thereby disconnecting the secondary circuit. When the plug is in the second position, the plug is inserted into the connector, thereby making the secondary circuit conductive. The switch cabinet further includes a plug-in base, which is fixed to the drawer and operatively connected to the plug-in, such that when the drawer moves between the disconnected position and the test position, the plug-in moves together with the plug-in base between the first position and the second position; when the drawer moves between the test position and the connected position, the plug-in remains in the second position and no longer moves together with the plug-in base.

2. The switchgear according to claim 1, characterized in that, The plug-in base includes two parallel sliding grooves, and the plug-in is provided with two parallel guide rails, which are configured to slide in the corresponding sliding grooves.

3. The switchgear according to claim 2, characterized in that, One side of the slide may be provided with an elastic structure, the elastic structure having a main body section, a recess disposed at one end of the elastic structure along the insertion direction, and an elastic protrusion located between the main body section and the recess. The protrusion protrudes inward and has a slope extending inwardly along the insertion direction. The recess has a first vertical surface adjacent to the slope and a second vertical surface opposite to the first vertical surface along the insertion direction. The first vertical surface and the second vertical surface extend inwardly perpendicular to the main body section, respectively. The guide rail is provided with a protrusion. When the drawer moves from the disconnected position toward the test position, the protrusion contacts the first vertical surface and is actuated by the first vertical surface in the insertion direction; When the drawer moves from the test position toward the connection position, the protrusion slides relative to the elastic structure from the first vertical plane across the protrusion to the main body section under the action of external force, causing the movement of the plug-in to separate from the movement of the plug-in base; As the drawer moves from the connection position toward the test position, the protrusion travels along the ramp relative to the elastic structure and slides into the recess; As the drawer moves from the test position toward the disconnected position, the protrusion contacts the second vertical surface and is actuated by the second vertical surface in the opening direction.

4. The switch cabinet according to claim 3, characterized in that, The plug-in base is provided with a spring clip, which is configured to hold the drawer.

5. The switchgear according to claim 1, characterized in that, The plug-in has a guide portion at the end facing the connector, and the connector has a mating guide portion at the end facing the plug-in. The guide portion includes a guide plane and a guide ramp. The guide plane extends along the insertion direction, and the guide ramp is arranged adjacent to the guide plane along the insertion direction. The guide ramp extends outwardly at an angle along the insertion direction. The mating guide includes a mating guide plane, which extends along the insertion direction; When the plug is inserted into the connector, the guide bevel guides the insertion process so that the guide plane aligns with the mating guide plane.

6. The switchgear according to claim 1, characterized in that, The connector is provided with a flexible hook, and the plug is provided with a protrusion, with the flexible hook protruding toward the plug; When the plug is in the second position, the protrusion is arranged adjacent to the elastic hook along the insertion direction and is limited by the elastic hook; When the plug moves from the second position toward the first position, the protrusion squeezes the elastic hook and causes the elastic hook to deform, thereby passing over the elastic hook in the opening direction.

7. The switchgear according to claim 1, characterized in that, The connector has a female interface, and the plug has a male interface. The female interface is plugged into the corresponding male interface.

8. The switch cabinet according to claim 7, characterized in that, The connector includes multiple pin sockets and / or RJ45 sockets, and the plug is provided with corresponding multiple pin plugs and / or RJ45 plugs.

9. The switchgear according to claim 1, characterized in that, The connector is electrically connected to an external power source via an interface on the side wall of the cabinet.

10. The switchgear according to claim 1, characterized in that, The secondary circuit includes a motor protector and / or a fault indicator.

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