Plug-in device for secondary circuit of intelligent switch cabinet

Abstract

The application discloses a plug device of a secondary circuit of an intelligent switch cabinet, which is used for closing of a secondary incoming line plug and a secondary incoming line socket in a drawer of the switch cabinet and comprises a fixed part arranged on the drawer and moving with the drawer, a movable part movably arranged on the fixed part, the secondary incoming line plug being arranged on the movable part, and a damping part connected to the fixed part and the movable part, wherein the movable part has a first closing position and a second closing position different from the first closing position relative to the fixed part, the damping part is used for damping movement of the movable part from the first closing position to the second closing position, and the movable part moves from the first closing position to the second closing position when the drawer is pushed into the cabinet body.

Description

Technical Field

[0001] This application relates to the field of power distribution cabinet technology, and more specifically, to a plug-in device for the secondary circuit of an intelligent switch cabinet. Background Technology

[0002] In intelligent switch cabinets, control devices and circuit breakers are integrated into the drawers. The control devices are used to monitor and control the circuit breakers. The circuit breakers are typically connected to the distribution busbar via a primary input plug and to the user via an output plug. The section from the primary input plug to the circuit breaker and to the output plug constitutes the primary circuit. The control devices constitute the secondary circuit section of the drawer. The primary circuit is connected with the primary input plug plugged into the distribution busbar, specifically, plugged into the bidirectional socket of the distribution busbar. The secondary circuit is connected with the secondary input plug plugged into the secondary input socket.

[0003] In actual use, as the drawer is inserted into the cabinet, it will transition sequentially from the isolation position, the testing position, and the working position.

[0004] At the working position, the primary circuit is connected, and the secondary circuit is also connected. At this time, the drawer is fully inserted into the cabinet.

[0005] At the test position, the primary circuit is disconnected, the secondary circuit is connected, and the drawer is inserted into the cabinet.

[0006] In the isolated position, the primary circuit is disconnected, the secondary circuit is also disconnected, and the drawer is partially pulled out of the cabinet.

[0007] In both the test and working positions, the secondary power input plug and socket need to be in complete contact. Therefore, the secondary power input plug needs to be long enough in the design to ensure that, in the test position (when the plug is just inserted into the socket), the drawer is not yet fully inserted into the cabinet, thus preventing the primary power input plug from connecting to the distribution busbar. However, excessively long secondary power input plugs place a heavy burden on their strength; the longer the plug, the more prone it is to bending during operation, reducing the equipment's lifespan. Summary of the Invention

[0008] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0009] As a first aspect of this application, in order to solve the problem that the secondary incoming line plug needs to be very long and is easy to bend, some embodiments of this application provide a plug-in device for the secondary circuit of an intelligent switch cabinet, for closing the secondary incoming line plug and the secondary incoming line socket in the drawer of the switch cabinet, and a fixing part, which is fixedly installed on the drawer.

[0010] The movable part is slidably mounted on the fixed part;

[0011] A damping element, connected to a fixed element and a moving element, to dampen the relative movement of the fixed element and the moving element;

[0012] When the damping component is in its normal state, the moving component is in the first closed position. When the moving component slides relative to the fixed component to compress the damping component, the moving component is in the second closed position. The direction in which the moving component moves from the first closed position to the second closed position is opposite to the direction in which the drawer is inserted into the cabinet.

[0013] When the movable part is in the first closed position, the secondary incoming line plug and the secondary incoming line socket are disconnected;

[0014] When the movable part is in the second closed position, the secondary incoming line plug is inserted into the secondary incoming line socket.

[0015] In this design, the movable part is slidably mounted on the fixed part and has two positions relative to the fixed part. Therefore, when the drawer is pushed so that the secondary input plug fixed on the movable part just makes contact with the secondary input socket, pushing the drawer further compresses the damping part. This damping part then applies a spring force to the movable part in the direction of the secondary input socket, making the contact between the secondary input plug and the secondary input socket more stable. This ensures the stability of the connection between the secondary input plug and the secondary input socket in the test position.

[0016] If the drawer is pushed further, the secondary input plug will remain in the plugged-in position with the secondary input socket, while simultaneously moving relative to the fixing component towards the second closed position. Therefore, after the secondary input plug is inserted into the secondary input socket, the damping component applies a spring force to the plug, ensuring the stability of the connection between the plug and socket in the working position.

[0017] Meanwhile, the displacement of the movable part from the first closed position to the second closed position essentially constitutes the extension of the secondary incoming line plug. When the secondary incoming line plug is just inserted into the secondary incoming line socket, the movable part is in the first closed position; when the secondary incoming line plug is fully inserted into the secondary incoming line socket, the movable part moves to the second closed position. Therefore, this can be equivalent to the secondary incoming line plug extending forward a certain distance when it is just connected to the secondary incoming line socket. Thus, in this solution, although the length of the secondary incoming line plug is not directly increased, it ensures that in the test position when the secondary incoming line plug is just inserted into the secondary incoming line socket, the drawer is not yet fully inserted into the cabinet. Therefore, the secondary incoming line plug does not need to be very long to achieve the effect of a very long secondary incoming line plug.

[0018] The direction of movement of the movable parts is opposite to the direction of the drawer being inserted into the cabinet. This ensures that when the secondary power supply plug and the secondary power supply socket just make contact, the distance between the first closed position and the second closed position constitutes the part of the secondary power supply plug extending towards the secondary power supply socket. Thus, when the secondary power supply plug and the secondary power supply socket just make contact, the drawer still has a relatively long distance that is not fully inserted into the cabinet.

[0019] If the moving direction of the movable part is parallel to the direction in which the secondary cable plug is inserted into the secondary cable socket, then the movable part will always be aligned with the secondary cable socket and the secondary cable plug when it moves. This will prevent the secondary cable plug and the secondary cable socket from becoming misaligned after they are aligned due to the movement of the movable part.

[0020] Furthermore, the movable part is provided with a guide, the fixed part is provided with a guide groove, the guide is inserted into the guide groove, and a bushing is rotatably provided on the guide.

[0021] Furthermore, at least two guide members are provided, with the two guide members respectively located on both sides of the central axis of the moving part.

[0022] Two guide members enable the moving parts to slide more smoothly.

[0023] In this design, a guide element is provided on the moving part, and a guide groove is provided on the fixed part. This allows the guide element and guide groove to form a guiding fit, resulting in smoother sliding of the moving part. Furthermore, the bushing rotatably mounted on the guide groove further reduces friction between the guide element and the inner wall of the guide groove, thus reducing sliding resistance.

[0024] Because a large number of electrical components need to be integrated into the drawer body, the volume of each part needs to be minimized. In the closing device, if the elastic element is directly set as a spring, the circle formed by the spring also needs to have a certain diameter due to the requirements of spring life and elasticity. Therefore, sufficient gaps need to be reserved between the moving parts and the fixed parts to accommodate the spring. This causes the closing device to extend too far into the center of the drawer body, affecting the layout of other electrical components.

[0025] To address this problem, this application provides the following technical solution:

[0026] The damping element is constructed as a torsion spring, and a support rod is provided on the fixing element. The support rod is located in the middle of the two guide elements, and the torsion spring is sleeved on the support rod. The two ends of the damping element are connected to the two guide elements respectively.

[0027] In this design, the damping element is constructed as a torsion spring. This allows the steel wires constituting the damping element to be coiled into a sufficiently large circle, reducing the number of coils in the torsion spring. As a result, the height of the torsion spring is relatively small, but the diameter is large enough. Thus, after the damping element is fitted onto the support rod, it can provide stable elastic force to the two guides respectively, while preventing the guides from protruding outward.

[0028] Furthermore, the distance between the guide and the support rod at the closest position is b1, and the distance between the guide and the support rod at the closest position is b2, where b1 / b2 = c, and c ∈ [1.7, 2.2].

[0029] In this scheme, c is within this range, which ensures that the guide component can apply sufficient deformation to the damping component when the displacement is only a small distance, thereby ensuring the elastic force applied by the damping component; at the same time, it can avoid applying too much pressure to the damping component, which would damage the damping component.

[0030] During the connection between the secondary input plug and the secondary input socket, there is a certain amount of resistance when the secondary input plug is inserted into the secondary input socket. Therefore, when the secondary input plug and the secondary input socket are in the test position, the moving part is in the first closed position, and the force supporting the moving part is the elastic force of the damping element. However, the deformation of the damping element is small at this time, and the elastic force provided is small. Therefore, it cannot guarantee that the secondary input plug can overcome the resistance and be inserted into the secondary input socket. This can easily lead to the secondary input plug not being able to be stably inserted into the secondary input socket in the test position.

[0031] Furthermore, the secondary circuit connection device of the intelligent switch cabinet also includes a locking member and an unlocking member; the locking member has a first locking position and a second locking position that are different from the fixed member, and when the locking member is in the first locking position, it locks the movable member in the first closed position; the unlocking member has a first unlocking position and a second unlocking position that are different from the fixed member, and when the secondary incoming line plug is inserted into the secondary incoming line socket, the unlocking member moves from the first unlocking position to the second unlocking position and pushes the locking member from the first locking position to the second locking position.

[0032] In this design, the movable component is positioned in the first open position by the locking component. Therefore, when the unlocking component is in the first locked position, the movable component cannot move. Consequently, when the secondary cable plug is just inserted into the secondary cable socket, because the movable component cannot move, the force applied to the secondary cable plug is the force that pushes the drawer, rather than the spring force of the damping component. In this way, the secondary cable plug can be stably pushed into the secondary cable socket without inserting too much of the secondary cable plug into the secondary cable socket, thus reducing the amount of the drawer protruding from the cabinet.

[0033] Furthermore, the direction in which the moving part moves from the first closed position to the second closed position is not parallel to the direction in which the locking part moves from the first locked position to the second locked position.

[0034] This avoids the problem of the moving part pushing the locking part from the first unlocking position and moving directly to the second closing position under the push of the elastic part.

[0035] To ensure that the unlocking component locks the moving part each time it moves to the first unlocked position under the push of the damping component, this solution provides the following approach:

[0036] Furthermore, the plug-in device for the secondary circuit of the intelligent switch cabinet also includes a reset component, which is connected to the locking component and the fixing component. The reset component is used to reset the locking component from the second locking position to the first locking position.

[0037] In this solution, the locking element can be automatically reset to the first locking position by the reset element, making it more convenient to use as it does not require manual reset.

[0038] Furthermore, the locking element is rotatably mounted on the fixed element.

[0039] After the locking component is rotated, its direction of movement relative to the fixed component changes, while the direction of movement of the movable component remains fixed. Therefore, the directions of movement of the locking component and the movable component are not likely to be the same, ensuring that the locking component can better lock the movable component.

[0040] Furthermore, the reset component is constructed with a torsion spring, and the fixing component is provided with a rotating pin and a limiting rod. The reset component is sleeved on the rotating pin, with one end of the reset component abutting against the locking component and the other end abutting against the limiting rod.

[0041] Compared to springs, torsion springs have a smaller volume in the axial direction, which can prevent the closing device, secondary input plug, and control module from taking up space inside the drawer and affecting the layout of other electrical components. Attached Figure Description

[0042] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0043] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0044] In the attached diagram:

[0045] Figure 1 This is a perspective view of the secondary circuit connection device of the intelligent switch cabinet shown in Embodiment 1 of this application after the secondary input plug has been assembled.

[0046] Figure 2 This is a perspective view of the secondary circuit connection device of the intelligent switch cabinet shown in Embodiment 1 of this application, after the damping member is moved from the back side of the fixing member to the front side of the fixing member.

[0047] Figure 3 This is an exploded view of the plug-in device for the secondary circuit of the intelligent switchgear shown in Embodiment 1 of this application;

[0048] Figure 4 This is an exploded view of a conductive component;

[0049] Figure 5 The plug-in device for the secondary circuit of the intelligent switch cabinet shown in Embodiment 1 of this application is a front view of the movable part when it is in the first closed position.

[0050] Figure 6 The plug-in device for the secondary circuit of the intelligent switchgear shown in Embodiment 1 of this application is a front view of the movable part when it is in the second closed position.

[0051] Figure 7 This is a perspective view of the secondary circuit connection device of the intelligent switch cabinet shown in Embodiment 2 of this application.

[0052] Figure 8 This is a partial schematic diagram of the locking and moving parts;

[0053] Figure 9 This is a front view of the secondary circuit connection device of the intelligent switch cabinet shown in Embodiment 2 of this application in the isolated position;

[0054] Figure 10 This is a front view of the secondary circuit connection device of the intelligent switch cabinet shown in Embodiment 2 of this application in the test position;

[0055] Figure 11 This is a front view of the secondary circuit connection device of the intelligent switch cabinet shown in Embodiment 2 of this application in its operating position;

[0056] Figure 12 This is a schematic diagram of the guide member and support rod on the fixing member as shown in Embodiment 1 of this application;

[0057] Figure 13 This is a schematic diagram of the guide member and support rod on the fastener shown in Embodiment 1 of this application, with the positions of a and b marked.

[0058] Figure label:

[0059] Example 1:

[0060] 100. Connecting devices for secondary circuits in intelligent switchgear;

[0061] 101. Fixing element; 1011. Second guide structure; 1011a. Guide groove; 1011b. Support rod;

[0062] 102. Moving part; 102a. First closing position; 102b. Second closing position; 1021. First guide structure; 1022. Guide component; 1022a. Screw; 1022b. Bushing; 1022c. Nut;

[0063] 103. Damping components;

[0064] 100a, secondary incoming line plug;

[0065] 100b, secondary incoming line socket;

[0066] Example 2:

[0067] 200. Connecting devices for secondary circuits of intelligent switchgear;

[0068] 201. Fasteners;

[0069] 202, Moving part; 202a, First closing position; 202b, Second closing position; 2021, Locking groove; 2022, Groove; 203, Damping component;

[0070] 204. Locking element; 2041a. First locking position; 2041b. Second locking position; 2041. Unlocking part; 2042. Locking part; 2043. Locking protrusion;

[0071] 205. Unlocking component; 2051. First unlocking position; 2052. Second unlocking position;

[0072] 206. Reset component;

[0073] 200b, secondary incoming line socket; Detailed Implementation

[0074] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0075] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0076] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0077] Example 1:

[0078] Reference Figures 1-6 The secondary circuit plug-in device 100 of the intelligent switchgear is used for closing the secondary incoming plug 100a and secondary incoming socket 100b in the switchgear drawer. The secondary incoming plug 100a is connected to the control module inside the switchgear, which is the control center for detecting the circuit breaker. The secondary incoming socket 100b is connected to the server or other control mechanisms of the switchgear. The drawer can be pulled out and pushed in from the switchgear. When pulled out, the secondary incoming plug 100a and secondary incoming socket 100b are separated; when pushed in, the secondary incoming plug 100a is inserted into the secondary incoming socket 100b. The above is only a brief introduction to the application background of this application and should not be construed as a limitation of this solution.

[0079] The secondary circuit connection device 100 of the intelligent switch cabinet includes a fixing member 101, a movable member 102, and a damping member 103. The fixing member 101 is mounted on the drawer and has a plate-like structure. The fixing member 101 is fixedly connected to the side wall of the drawer. Specifically, the fixing member 101 can be fixed to the drawer by screwing, welding, snap-fitting, etc. The movable member 102 is movably mounted on the drawer, and the secondary inlet plug 100a is mounted on the movable member 102. The movable member 102 has a first closing position 102a and a second closing position 102b that are different from those of the fixing member 101. The damping member 103 is used to dampen the movement of the movable member 102 from the first closing position 102a to the second closing position 102b. When the drawer is pushed into the cabinet, the movable member 102 moves from the first closing position 102a to the second closing position 102b.

[0080] refer to Figure 2 Furthermore, the movable member 102 and the fixed member 101 form a sliding connection. The movable member 102 moves in a direction parallel to and opposite to the direction in which the secondary input plug 100a is inserted into the secondary input socket 100b. Thus, when the drawer is pushed so that the secondary input plug 100a and the secondary input socket 100b are just connected, the movable member 102 is in the first closed position 102a. As the drawer is pushed further, the secondary input plug 100a is inserted into the secondary input socket 100b, and the movable member 102 moves towards the second closed position 102b. Therefore, the movable member 102 will move backward a certain distance.

[0081] refer to Figure 3 Furthermore, the movable component 102 is provided with a first guide structure 1021, and the fixed component 101 is provided with a second guide structure 1011. The first guide structure 1021 and the second guide structure 1011 form a guiding fit. One of the first guide structure 1021 and the second guide structure 1011 is constructed as a guide groove 1011a, and the other is constructed as a guide member 1022. The guide member 1022 and the guide groove 1011a form a guiding fit. In this embodiment, the movable component 102 is provided with a guide member 1022, and the fixed component 101 is provided with a guide groove 1011a.

[0082] refer to Figure 4Specifically, the movable component 102 is provided with a guide component 1022, which includes a screw 1022a, a bushing 1022b, and a nut 1022c. The screw 1022a passes sequentially through the movable component 102, the bushing 1022b, the fixed component 101, and the nut 1022c, with the nut 1022c screwed onto the screw 1022a. The fixed component 101 is provided with a guide groove 1011a, which penetrates the fixed component 101. The screw 1022a passes through the guide groove 1011a, and the bushing 1022b is disposed within the guide groove 1011a. The bushing 1022b is rotatably connected to the screw 1022a, and the bushing 1022b is in a guiding fit with the sidewall of the guide groove 1011a. In this way, the movable component 102 can slide on the fixed component 101. In this scheme, when the guide member 1022 is located in the guide groove 1011a at one end close to the secondary incoming plug 100a, the movable member 102 is in the first closed position 102a. When the guide member 1022 is located in the guide groove 1011a at one end away from the secondary incoming plug 100a, the movable member 102 is in the second open position.

[0083] Furthermore, at least two sets of guide members 1022 and guide grooves 1011a are provided, and the damping member 103 is constructed as a torsion spring, with its two ends connected to different guide members 1022 respectively. Thus, when the guide member 1022 is positioned at the second open position, the damping member 103 is compressed, thereby providing a restoring force to the guide member 1022. In this design, by setting the damping member 103 as a torsion spring, the restoring operation of the two guide members 1022 can be completed simultaneously. Moreover, constructing the damping member 103 as a torsion spring, compared to a regular spring, reduces the required thickness of the torsion spring, avoiding a large space between the fixing member 101 and the drawer.

[0084] Specifically, a support rod is provided on the fixing component, the support rod is located in the middle of the two guide components, the torsion spring is sleeved on the support rod, and the two ends of the damping component are respectively connected to the two guide components; the distance between the guide component and the support rod at the closest position is b1, and the distance between the guide component and the support rod at the closest position is b2, b1 / b2=c, c∈[1.7, 2.2].

[0085] refer to Figures 7-11 Example 2: The difference between Example 2 and Example 1 is that a locking component and an unlocking component are configured.

[0086] The secondary circuit connection device 200 of the intelligent switchgear also includes a locking member and an unlocking member 205. The locking member is movably mounted on the fixed member 201. The locking member 204 has a first locking position 2041a and a second locking position 2041b relative to the fixed member 201. When the locking member 204 is in the first locking position, it locks the movable member 202 in the first closed position 202a. The locking member 204 is rotatably mounted on the fixed member 201. The direction in which the movable member 202 moves from the first closed position 202a to the second closed position 202b is not parallel to the direction in which the locking member 204 moves from the first locking position 2041a to the second locking position 2041b.

[0087] Specifically, the locking element includes an unlocking part 2041 and a locking part 2042. The unlocking parts 2041 and 2042 are fixedly perpendicular to each other in their extension directions, so that the unlocking element 205 is formed in an "L" shape. A rotating hole is provided at the junction of the unlocking part 2041 and the connecting part. A rotating shaft is provided on the fixing member 201 and passes through the rotating hole, so that the unlocking element 205 is rotatably mounted on the fixing member 201. Therefore, the unlocking element 205 has at least two different positions relative to the fixing member 201.

[0088] More specifically, the locking part 2042 is provided with a locking protrusion 2043, and the movable part 202 is provided with a locking groove 2021. The side wall of the locking groove 2021 is also provided with an inwardly facing groove 2022. After the locking part 2042 is partially inserted into the locking groove 2021, the locking protrusion 2043 is inserted into the groove 2022, thus forming a hook-shaped connection structure between the locking part 2042 and the movable part 202. At this time, the unlocking part 205 is located in the first locking position 2041a. When the unlocking part 205 rotates a certain angle so that the locking protrusion 2043 rotates out of the groove 2022, the unlocking part 205 is located in the second locking position 2041b.

[0089] In this embodiment, the locking member is rotated so that when it moves from the first locking position 2041a to the second locking position 2041b, the direction in which the movable member 202 moves from the first closed position 202a to the second closed position 202b is not parallel to the direction in which the locking member 204 moves from the first locking position 2041a to the second locking position 2041b. Of course, in other embodiments, the locking member can lock or unlock the movable member 202 along a direction perpendicular to the surface of the fixed member 201.

[0090] Furthermore, the unlocking component 205 has a first unlocking position 2051 and a second unlocking position 2052 that are different from those of the fixing component 201;

[0091] When the secondary input plug is inserted into the secondary input socket 200b, the unlocking member 205 moves from the first unlocking position 2051 to the second unlocking position 2052 and pushes the locking member 204 from the first locking position 2041a to the second locking position 2041b.

[0092] Specifically, the unlocking component 205 is fixedly mounted on the secondary incoming line socket 200b. This means that the unlocking component 205 is fixed to the cabinet relative to the drawer, and it does not move with the drawer when it is pulled out. Therefore, when the drawer moves the fixing component 201, the unlocking component 205 will have at least a first unlocking position 2051 and a second unlocking position 2052 relative to the fixing component 201.

[0093] In this embodiment, the unlocking component 205 is fixed to the secondary incoming line socket 200b. In other embodiments, the unlocking component 205 can be slidably mounted on the fixing component 201. When the drawer slides into the cabinet and the unlocking component 205 comes into contact with the cabinet, the unlocking component 205 can still have two different positions relative to the fixing component 201.

[0094] More specifically, to facilitate the reset of the locking member 204, the secondary circuit connection device 200 of the intelligent switch cabinet also includes a reset member 206. The reset member 206 is connected to the fixing member 201 and the locking member 204. The reset member 206 is used to reset the locking member 204 from the second locking position 2041b to the first locking position 2041a. More specifically, the reset member 206 is constructed as a torsion spring. A rotating pin and a limiting rod are provided on the fixing member 201. The reset member 206 is sleeved on the rotating member, and one end of the reset member 206 abuts against the locking member 204. One end of the reset member abuts against the locking member, and the other end abuts against the limiting rod. Because the locking member 204 will twist the reset member 206 when it rotates, the reset member 206 can push the locking member 204 to reset. The rotating pin and the limiting rod are both screwed onto the fixing member and fixedly connected to the fixing member.

[0095] To better illustrate the technical solution of this application, the working principle of the secondary circuit plug-in device 200 of the intelligent switchgear is described below in the isolation position, test position and operation position.

[0096] refer to Figure 9 When in the isolated position, the drawer is pulled out of the cabinet, and the secondary power supply plug and the secondary power supply socket 200b do not come into contact with each other;

[0097] The movable part 202 is in the first closed position 202a, located as close as possible to the secondary incoming socket 200b. The locking part 204 is in the first locked position 2041a, locking the movable part 202. At this time, the movable part 202 cannot move. The movable part 202 and the drawer are integrated, and there is no relative position between the movable part 202 and the drawer.

[0098] When moving from the isolation position to the test position, the drawer is pushed into the cabinet, and the secondary cable plug is inserted into the secondary cable socket 200b, with the secondary cable plug and the secondary cable socket 200b making contact with each other.

[0099] refer to Figure 10 The movable part 202 is in the first closed position 202a, located as close as possible to the secondary incoming line socket 200b. The locking part 204 is in the first locked position 2041a, locking the movable part 202. At this time, the movable part 202 cannot move, so the force for the secondary incoming line plug to be inserted into the secondary incoming line socket 200b is directly replaced by the force of pushing the drawer, without the need for the reset part 206. At this time, the unlocking part 205 has not yet reached the second unlocking position 2052, but is only in contact with the locking part 204, without pushing the locking part 204 open.

[0100] refer to Figure 11 When the drawer is moved from the test position to the operating position, it is pushed into the cabinet, and the secondary cable plug 200a is fully inserted into the secondary cable socket 200b. At the same time, the unlocking member 205 moves to the second unlocking position 2052, and then the unlocking member 205 pushes the locking member 204 to rotate. The locking member 204 reaches the second locking position 2041b, and the locking protrusion 2043 disengages from the groove 2022. As a result, the moving member 202 and the locking member 204 are no longer locked to each other, so the moving member 202 moves relative to the fixed member 201. Then, as the drawer continues to be pushed into the cabinet, the moving member 202 can move towards the second closed position 202b. At the same time, the moving member 202 compresses the damping member 203, and the elastic force generated by the damping member 203 will push the moving member 202, thereby ensuring that the secondary cable plug can be stably inserted into the secondary cable socket 200b.

[0101] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A plug-in device for the secondary circuit of an intelligent switchgear, used for closing the secondary incoming plug and secondary incoming socket in the drawer of the switchgear, characterized in that, include: The fastener is fixedly installed on the drawer; the fastener is equipped with a support rod. The movable part is slidably mounted on the fixed part; the movable part is provided with guide members; there are at least two guide members, which are respectively located on both sides of the central axis of the movable part; the support rod is located in the middle of the two guide members; A damping element is connected to a fixed element and a movable element to dampen the relative movement between the fixed element and the movable element; the damping element is constructed as a torsion spring, which is sleeved on a support rod, and the two ends of the damping element are respectively connected to two guide elements. When the damping component is in its normal state, the moving component is in the first closed position. When the moving component slides relative to the fixed component to compress the damping component, the moving component is in the second closed position. The direction in which the moving component moves from the first closed position to the second closed position is opposite to the direction in which the drawer is inserted into the cabinet and is parallel to each other. The distance between the guide and the support rod at the closest point is b1, and the distance between the guide and the support rod at the closest point is b2, where b1 / b2 = c, and c ∈ [1.7, 2.2]. When the movable part is in the first closed position, the secondary incoming line plug and the secondary incoming line socket are disconnected; When the movable part is in the second closed position, the secondary incoming line plug is inserted into the secondary incoming line socket.

2. The plug-in device for the secondary circuit of the intelligent switchgear according to claim 1, characterized in that: The fixing component is provided with a guide groove, the guide component is inserted into the guide groove, and a bushing is rotatably provided on the guide component.

3. The plug-in device for the secondary circuit of the intelligent switchgear according to any one of claims 1 to 2, characterized in that: The secondary circuit connection device of the intelligent switch cabinet also includes locking and unlocking components; The locking member has a first locking position and a second locking position that are different from the fixed member. When the locking member is in the first locking position, it locks the moving member in the first closed position. The unlocking component has a first unlocking position and a second unlocking position that are different from those of the fixing component; When the secondary cable plug is inserted into the secondary cable socket, the unlocking member moves from the first unlocking position to the second unlocking position and pushes the locking member from the first locking position to the second locking position.

4. The plug-in device for the secondary circuit of the intelligent switchgear according to claim 3, characterized in that: The direction in which the moving part moves from the first closing position to the second closing position is not parallel to the direction in which the locking part moves from the first locking position to the second locking position.

5. The plug-in device for the secondary circuit of the intelligent switchgear according to claim 3, characterized in that: The secondary circuit connection device of the intelligent switch cabinet also includes a reset component, which is connected to the locking component and the fixing component. The reset component is used to reset the locking component from the second locking position to the first locking position.

6. The plug-in device for the secondary circuit of the intelligent switchgear according to claim 3, characterized in that: The locking element is rotated and mounted on the fixed element.

7. The plug-in device for the secondary circuit of the intelligent switchgear according to claim 3, characterized in that: The reset component is constructed with a torsion spring, and the fixing component is provided with a rotating pin and a limiting rod. The reset component is sleeved on the rotating pin, with one end of the reset component abutting against the locking component and the other end abutting against the limiting rod.

Images