An auxiliary circuit connector for a power distribution cabinet

Abstract

The utility model relates to power distribution cabinet connection technical field discloses a kind of power distribution cabinet auxiliary circuit connector, including movable insert, and test contact piece is provided on movable insert;Static insert, accommodating cavity inner wall is provided with static contact piece group, and static contact piece group includes first static contact piece and second static contact piece, and first static contact piece and second static contact piece are oppositely set on the inner wall of accommodating cavity;When movable insert is at least partially inserted in static insert, the first position of test contact piece and first static contact piece abut, and when movable insert is entirely inserted in static insert, test contact piece is separated from first static contact piece, and the second position of test contact piece and second static contact piece abut, the power distribution cabinet auxiliary circuit connector provided by the utility model saves the special test static contact piece in prior art, while realizing test function and normal conduction function, reduce material cost and processing procedure, simplify connector structure.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet connection technology, specifically to a power distribution cabinet auxiliary circuit connector. Background Technology

[0002] In drawer-type distribution cabinets, auxiliary circuit connectors are the core components for achieving electrical connection between the drawer unit and the fixed cabinet frame. Auxiliary circuit connectors typically consist of two parts: a moving connector installed at the drawer's outlet terminal that moves with the drawer, and a stationary connector fixed to the cabinet frame that connects to external auxiliary circuits. When the drawer is pushed into the connection position, the moving and stationary connectors engage tightly, forming a reliable low-resistance conductive path, ensuring stable power transmission from the fixed cabinet frame to the electrical components inside the drawer.

[0003] However, to achieve the testing function of the auxiliary circuit, namely verifying the secondary control circuit with the main circuit disconnected, existing technology typically adds a dedicated test contact to the moving insert. This test contact adopts a segmented design, with the front section protruding to form the contact point and the rear section recessed to form the disconnection gap. Correspondingly, the stationary insert has a dedicated test stationary contact with a protruding locking member. By inserting the moving insert into the stationary insert to a certain depth, the test contact makes contact with the front locking member of the test stationary contact, entering the test state; by continuing to push the moving insert until it is fully inserted into the stationary insert, the main contact and the stationary contact make contact, at which point the normal conduction state is achieved.

[0004] When the equipment is operating normally (i.e., the drawer is fully inserted), the test contact itself does not perform the function of transmitting current to the auxiliary circuit. The test contact is idle for the vast majority of the operating time, and its presence does not provide any additional value to the normal conductivity of the auxiliary circuit. Manufacturing and installing this dedicated test contact requires additional material costs and processing steps. Utility Model Content

[0005] In view of this, the present invention provides an auxiliary circuit connector for a power distribution cabinet to solve the problem that the use of dedicated test contact pieces in the prior art increases material costs and processing steps.

[0006] This utility model provides an auxiliary circuit connector for a power distribution cabinet, including:

[0007] A movable insert, wherein a test contact is provided on the movable insert;

[0008] A static insert has a receiving cavity suitable for the insertion of the moving insert. The inner wall of the receiving cavity is provided with a static contact plate group, which includes a first static contact plate and a second static contact plate. The first static contact plate and the second static contact plate are disposed opposite to each other on the inner wall of the receiving cavity.

[0009] The moving plug has a first position where the test contact abuts against the first stationary contact when it is at least partially inserted into the stationary plug, and a second position where the test contact separates from the first stationary contact and abuts against the second stationary contact when the moving plug is fully inserted into the stationary plug.

[0010] Optionally, the test contact includes:

[0011] A first connector is disposed on the movable plug, and a first end of the first connector is adapted to be electrically connected to an external line.

[0012] The second connector is oscillatingly disposed on the moving plug, and the first end of the second connector is adapted to abut against the second stationary contact piece when the moving plug is in the second position.

[0013] An elastic connector, one end of which is connected to the second end of the first connector, and the other end of which is connected to the second connector, the elastic connector being adapted to abut against the first stationary contact when the moving plug is in the first position, and to separate from the first stationary contact when the moving plug is in the second position.

[0014] Optionally, the second connector is rotatably mounted on the moving insert via a rotating shaft, the moving insert is provided with a first limiting member, and the second stationary contact piece is provided with a second limiting member;

[0015] When the movable component is in the first position, the first limiting member abuts against the second connecting member, causing the elastic connecting member to abut against the first stationary contact piece; when the movable component moves from the first position to the second position, the second limiting member first abuts against the first end of the second connecting member, causing the first end of the second connecting member to rotate away from the second limiting member and abut against the second stationary contact piece; when the movable component is in the second position, the second connecting member abuts against the second stationary contact piece under the action of the second limiting member.

[0016] Optionally, the movable insert is further provided with a third limiting member, which is adapted to abut against the second connecting member when the movable insert is in the second position.

[0017] Optionally, the stationary insert is further provided with a flexible insulating member, which is fixedly disposed on the inner wall of the receiving cavity and partially covers the surface of the first stationary contact piece. When the moving insert is in the second position, the flexible insulating member is deformed by the compression of the moving insert and covers the elastic connector.

[0018] Optionally, it also includes:

[0019] A movable contact piece, wherein the movable contact piece and the test contact piece are respectively disposed on both sides of the movable plug-in, and the movable contact piece is adapted to abut against the second stationary contact piece when the movable plug-in is inserted into the stationary plug-in.

[0020] Optionally, the portion of the second stationary contact near the opening of the receiving cavity protrudes outward to form a locking portion, which is adapted to abut against the moving contact.

[0021] Optionally, the movable plug is provided with a conventional contact, and the conventional contact is provided with a wiring assembly, and the movable plug is adapted to be electrically connected to an external line through the wiring assembly.

[0022] Optionally, the wiring assembly includes:

[0023] A snap ring connector, which is adapted to snap and fix an electrical wire in the conventional contact and abut against the movable contact.

[0024] Optionally, the wiring assembly further includes:

[0025] A push button is disposed on the movable insert and is connected to the rotating arm of the snap ring connector. By pressing the push button, the wire can be separated from the movable contact piece.

[0026] Beneficial effects

[0027] The auxiliary circuit connector for the power distribution cabinet provided by this utility model includes a moving connector with a test contact piece; and a stationary connector with a receiving cavity suitable for insertion of the moving connector. The inner wall of the receiving cavity is provided with a set of stationary contact pieces, including a first stationary contact piece and a second stationary contact piece, which are disposed opposite to each other on the inner wall of the receiving cavity. The moving connector has a first position where, when at least partially inserted into the stationary connector, the test contact piece abuts against the first stationary contact piece, and a second position where, when the moving connector is fully inserted into the stationary connector, the test contact piece separates from the first stationary contact piece and abuts against the second stationary contact piece.

[0028] The auxiliary circuit connector for the distribution cabinet provided by this utility model allows the test contact on the moving connector to abut or separate from the first and second stationary contacts on the stationary connector at different insertion positions, eliminating the need for a dedicated test stationary contact in the prior art. While achieving the testing function and normal conduction function, it reduces material costs and processing steps, and simplifies the connector structure. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a front view of an auxiliary circuit connector for a power distribution cabinet according to an embodiment of the present utility model;

[0031] Figure 2 This is a cross-sectional view of the auxiliary circuit connector of the power distribution cabinet in the first state according to an embodiment of the present utility model.

[0032] Figure 3 This is a cross-sectional view of the auxiliary circuit connector of the power distribution cabinet in the second state according to an embodiment of the present utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Moving insert; 11. Test contact; 111. First connector; 112. Second connector; 113. Elastic connector; 12. Rotating shaft; 13. First limiting element; 14. Third limiting element; 15. Moving contact; 16. Conventional contact; 17. Snap ring connector; 18. Pressing element; 19. Test contact;

[0035] 2. Static insert; 21. First static contact piece; 22. Second static contact piece; 23. Second limiting component; 24. Flexible insulating component. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0038] According to an embodiment of this utility model, a power distribution cabinet auxiliary circuit connector is provided, comprising:

[0039] Moving plug 1, with a test contact 11 provided on it;

[0040] The static insert 2 is provided with a receiving cavity suitable for the insertion of the moving insert 1. The inner wall of the receiving cavity is provided with a static contact plate group, which includes a first static contact plate 21 and a second static contact plate 22. The first static contact plate 21 and the second static contact plate 22 are disposed opposite to each other on the inner wall of the receiving cavity.

[0041] The moving plug 1 has a first position where the test contact 11 abuts against the first stationary contact 21 when it is at least partially inserted into the stationary plug 2, and a second position where the test contact 11 separates from the first stationary contact 21 and abuts against the second stationary contact 22 when the moving plug 1 is fully inserted into the stationary plug 2.

[0042] It should be noted that when the moving plug 1 is in the first position and partially inserted into the stationary plug 2, the test contact 11 abuts against the first stationary contact 21, which meets the test requirements of the secondary control circuit when the auxiliary circuit is disconnected, ensuring the reliable realization of the test function. In the second position, the moving plug 1 is fully inserted into the stationary plug 2, the test contact 11 separates from the first stationary contact 21 and abuts against the second stationary contact 22. This not only ensures the normal conduction and transmission of electrical energy in the auxiliary circuit, but more importantly, even if there are problems such as poor contact or looseness in the connection structure of the auxiliary circuit, the stable abutment between the test contact 11 and the second stationary contact 22 can still form an effective conductive path, avoiding the inability of the distribution cabinet to operate normally due to the connection failure of the auxiliary circuit, thus improving the reliability and fault tolerance of the equipment operation.

[0043] The auxiliary circuit connector for the power distribution cabinet provided in this embodiment allows the test contact 11 on the moving plug 1 to abut or separate from the first stationary contact 21 and the second stationary contact 22 on the stationary plug 2 at different plug positions, eliminating the need for a dedicated test stationary contact in the prior art. While achieving the test function and normal conduction function, it reduces material costs and processing steps, and simplifies the connector structure.

[0044] Furthermore, the test contact 11 includes:

[0045] The first connector 111 is disposed on the movable plug 1, and the first end of the first connector 111 is adapted to be electrically connected to an external line.

[0046] The second connector 112 is oscillatingly disposed on the moving plug 1, and the first end of the second connector 112 is adapted to abut against the second stationary contact piece 22 when the moving plug 1 is in the second position.

[0047] The elastic connector 113 has one end connected to the second end of the first connector 111 and the other end connected to the second connector 112. The elastic connector 113 is adapted to abut against the first stationary contact piece 21 when the moving plug 1 is in the first position and to separate from the first stationary contact piece 21 when the moving plug 1 is in the second position.

[0048] Specifically, the test contact 11 consists of a first connector 111, a second connector 112, and an elastic connector 113. The first connector 111 is fixed to the movable plug 1, and its first end is used to connect to an external circuit. The second connector 112 is swayably mounted on the movable plug 1. When the movable plug 1 is in the second position, its first end can abut against the second stationary contact 22. The elastic connector 113 is connected to the second end of the first connector 111 and the second connector 112 at its two ends, respectively. When the movable plug 1 is in the first position, the elastic connector 113 abuts against the first stationary contact 21, and when it is in the second position, it separates from the first stationary contact 21.

[0049] Specifically, in this embodiment, the elastic connector 113 is an elastic metal sheet. One end of the metal sheet is fixedly connected to the second end of the first connector 111, and the other end is fixedly connected to the second connector 112. The elastic deformation of the metal sheet itself is used to achieve contact and separation with the first stationary contact piece 21. Of course, in some optional embodiments, elastic elements such as springs can also be provided to increase the elastic deformation capability of the elastic connector 113.

[0050] It is easy to understand that, through the elastic characteristics of the elastic connector 113 and the swing characteristics of the second connector 112, reliable contact and separation of the test contact 11 between the first position and the first stationary contact 21, and between the second position and the second stationary contact 22 can be ensured, thereby improving the stability of switching between different states; at the same time, the division of labor among the components is clear, which facilitates processing and assembly, and further optimizes the overall performance of the connector.

[0051] Furthermore, the second connector 112 is rotatably mounted on the moving insert 1 via the rotating shaft 12. The moving insert 1 is provided with a first limiting member 13, and the second stationary contact piece 22 is provided with a second limiting member 23.

[0052] When the movable plug 1 is in the first position, the first limiting member 13 abuts against the second connecting member 112, causing the elastic connecting member 113 to abut against the first stationary contact piece 21; when the movable plug 1 moves from the first position to the second position, the second limiting member 23 first abuts against the first end of the second connecting member 112, causing the first end of the second connecting member 112 to rotate away from the second limiting member 23 and abut against the second stationary contact piece 22; when the movable plug 1 is in the second position, the second connecting member 112 abuts against the second stationary contact piece 22 under the action of the second limiting member 23.

[0053] Specifically, the second connecting member 112 is rotatably mounted on the moving member 1 via the rotating shaft 12. The moving member 1 is provided with a first limiting member 13, and the second stationary contact piece 22 is provided with a second limiting member 23. When the moving member 1 is in the first position, the first limiting member 13 abuts against the second connecting member 112, causing the elastic connecting member 113 to remain in contact with the first stationary contact piece 21. During the movement of the moving member 1 from the first position to the second position, the second limiting member 23 first contacts the first end of the second connecting member 112, pushing the first end of the second connecting member 112 to rotate away from the second limiting member 23, and then abuts against the second stationary contact piece 22. When the moving member 1 is in the second position, the second connecting member 112 stably abuts against the second stationary contact piece 22 under the action of the second limiting member 23.

[0054] It is easy to understand that by using the rotating shaft 12 to rotate the second connector 112, and in conjunction with the function of the first limiting member 13 and the second limiting member 23, the state of the second connector 112 in different positions can be controlled to ensure the stable and reliable contact or separation between the test contact 11 and the stationary contact group; the setting of the limiting members makes the actions of each component connected in an orderly manner, improves the accuracy and stability of the connector operation, and reduces failures caused by poor contact.

[0055] In an alternative embodiment, the pivot 12 can be replaced with a hinge, which connects the second connector 112 and the moving plug 1, thus achieving the same rotation function of the second connector 112.

[0056] Furthermore, the movable plug 1 is also provided with a third limiting member 14. When the movable plug 1 is in the second position, the third limiting member 14 is adapted to abut against the second connecting member 112.

[0057] It is easy to understand that the third limiting member 14 added to the moving plug 1 abuts against the second connecting member 112 when the moving plug 1 is in the second position. Together with the second limiting member 23, it can form a bidirectional limiting on the second connecting member 112, further enhancing the stability of the contact between the second connecting member 112 and the second stationary contact piece 22, effectively avoiding contact loosening caused by factors such as equipment vibration, and improving the reliability of the auxiliary circuit in the conducting state.

[0058] Furthermore, the stationary insert 2 is also provided with a flexible insulating member 24. The flexible insulating member 24 is fixedly disposed on the inner wall of the receiving cavity and partially covers the surface of the first stationary contact piece 21. When the moving insert 1 is in the second position, the flexible insulating member 24 is deformed by the moving insert 1 and covers the elastic connector 113.

[0059] In an easy-to-understand way, when the moving plug 1 is in the second position, the flexible insulating part 24 is deformed by compression and covers the elastic connector 113, which can reliably isolate the elastic connector 113 from the first stationary contact piece 21, preventing accidental contact between the two from causing circuit interference or malfunction. At the same time, the flexible material can adapt to the deformation requirements during the compression process, avoiding damage to the components due to hard contact, thus improving the safety and durability of the connector.

[0060] Specifically, in this embodiment, the flexible insulating component 24 is supported by silicone rubber and fixed to the position of the first stationary contact piece 21 on the inner wall of the receiving cavity through a vulcanization process. The part of it covering the surface of the first stationary contact piece 21 has an arc-shaped protrusion structure. When the moving plug 1 is in the second position, the outer wall of the moving plug 1 squeezes the arc-shaped protrusion to deform it, thereby completely covering the elastic connector 113 and forming a tight insulation isolation.

[0061] In an alternative embodiment, the flexible insulating member 24 can be replaced with a folded insulating sheet made of fluororubber, which is fixed to the inner wall of the receiving cavity by bolts. The folded part faces the elastic connector 113. When the moving insert 1 moves to the second position, the folded part is squeezed open and wraps the elastic connector 113. Alternatively, a structure of polyurethane foam wrapped with insulating cloth can be adopted, which uses the elastic deformation of the foam to achieve the covering and insulation of the elastic connector 113.

[0062] Furthermore, it also includes:

[0063] The movable contact 15 and the test contact 11 are respectively disposed on both sides of the movable plug 1. The movable contact 15 is adapted to abut against the second stationary contact 22 when the movable plug 1 is inserted into the stationary plug 2.

[0064] Furthermore, the portion of the second stationary contact 22 near the opening of the receiving cavity protrudes outward to form a locking portion, which is adapted to abut against the moving contact 15.

[0065] As is easily understood, the moving contact 15 and the test contact 11 are respectively located on both sides of the moving plug 1, and when the moving plug 1 is inserted into the stationary plug 2, it abuts against the second stationary contact 22. With the cooperation of the protruding snap-fit ​​part of the second stationary contact 22 abutting against the moving contact 15, a dual conductive path can be formed, which enhances the reliability of the auxiliary circuit conduction. At the same time, the design of the snap-fit ​​part can improve the tightness of the contact between the moving contact 15 and the second stationary contact 22, reduce the contact resistance, reduce the loss in the power transmission process, and further ensure the stable operation of the distribution cabinet.

[0066] Furthermore, the movable plug-in 1 is provided with a conventional contact 16, and the conventional contact 16 is provided with a wiring component. The movable plug-in 1 is suitable for electrical connection with an external line through the wiring component.

[0067] It should be noted that the moving plug-in 1 is also equipped with a test contact 19, which has a structure similar to the conventional contact 16, and will not be described in detail here.

[0068] Furthermore, the wiring assembly includes:

[0069] The snap ring connector 17 is adapted to snap and fix the wire in the conventional contact 16 and abut against the moving contact 15.

[0070] In an easy-to-understand way, the snap ring connector 17 snaps and fixes the wire in the conventional contact 16 and abuts against the moving contact 15. This not only enables the wire to be quickly fixed to the conventional contact 16, but also ensures a stable conductive connection between the wire and the moving contact 15. This reduces wiring operation time, avoids poor contact caused by loose wiring, and also avoids the tedious steps of repeatedly tightening and loosening bolts when using conventional bolt connections, as well as contact failures caused by loose or corroded bolts.

[0071] Furthermore, the wiring assembly also includes:

[0072] The pusher 18 is mounted on the moving insert 1 and is connected to the rotating arm of the snap ring connector 17. By pressing the pusher 18, the wire can be separated from the moving contact piece 15.

[0073] It is easy to understand that the pusher 18 is connected to the rotating arm of the snap ring connector 17. By pressing the pusher 18, the wire can be separated from the moving contact 15. The wire can be quickly disassembled without the aid of tools, simplifying the wire disassembly operation, shortening the operation time, and improving the convenience of operation.

[0074] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A connector for auxiliary circuits in a power distribution cabinet, characterized in that, include: A moving plug (1) is provided with a test contact (11); A stationary insert (2) is provided with a receiving cavity suitable for the insertion of the moving insert (1). The inner wall of the receiving cavity is provided with a set of stationary contact pieces. The set of stationary contact pieces includes a first stationary contact piece (21) and a second stationary contact piece (22). The first stationary contact piece (21) and the second stationary contact piece (22) are disposed opposite to each other on the inner wall of the receiving cavity. When the moving plug (1) is at least partially inserted into the stationary plug (2), the test contact (11) abuts against the first stationary contact (21), and when the moving plug (1) is fully inserted into the stationary plug (2), the test contact (11) separates from the first stationary contact (21) and abuts against the second stationary contact (22).

2. The auxiliary circuit connector for the power distribution cabinet according to claim 1, characterized in that, The test contact (11) includes: A first connector (111) is disposed on the moving plug (1), and the first end of the first connector (111) is adapted to be electrically connected to an external line. The second connector (112) is oscillatingly disposed on the moving plug (1), and the first end of the second connector (112) is adapted to abut against the second stationary contact piece (22) when the moving plug (1) is in the second position; An elastic connector (113) is provided, one end of which is connected to the second end of the first connector (111), and the other end of which is connected to the second connector (112). The elastic connector (113) is adapted to abut against the first stationary contact piece (21) when the moving plug (1) is in the first position, and to separate from the first stationary contact piece (21) when the moving plug (1) is in the second position.

3. The auxiliary circuit connector for the power distribution cabinet according to claim 2, characterized in that, The second connector (112) is rotatably mounted on the moving insert (1) via a rotating shaft (12). The moving insert (1) is provided with a first limiting member (13), and the second stationary contact piece (22) is provided with a second limiting member (23). When the moving plug (1) is in the first position, the first limiting member (13) abuts against the second connecting member (112), causing the elastic connecting member (113) to abut against the first stationary contact piece (21); when the moving plug (1) moves from the first position to the second position, the second limiting member (23) first abuts against the first end of the second connecting member (112), causing the first end of the second connecting member (112) to rotate away from the second limiting member (23) and abut against the second stationary contact piece (22); when the moving plug (1) is in the second position, the second connecting member (112) abuts against the second stationary contact piece (22) under the action of the second limiting member (23).

4. The auxiliary circuit connector for the power distribution cabinet according to claim 3, characterized in that, The movable plug (1) is also provided with a third limiting member (14). When the movable plug (1) is in the second position, the third limiting member (14) is adapted to abut against the second connecting member (112).

5. The auxiliary circuit connector for the power distribution cabinet according to claim 3, characterized in that, The stationary insert (2) is also provided with a flexible insulating member (24). The flexible insulating member (24) is fixedly disposed on the inner wall of the receiving cavity and partially covers the surface of the first stationary contact piece (21). When the moving insert (1) is in the second position, the flexible insulating member (24) is squeezed and deformed by the moving insert (1) and covers the elastic connector (113).

6. The auxiliary circuit connector for the distribution cabinet according to any one of claims 1-5, characterized in that, Also includes: The movable contact (15) and the test contact (11) are respectively disposed on both sides of the movable plug (1). The movable contact (15) is adapted to abut against the second static contact (22) when the movable plug (1) is inserted into the static plug (2).

7. The auxiliary circuit connector for the power distribution cabinet according to claim 6, characterized in that, The portion of the second stationary contact (22) near the opening of the receiving cavity protrudes outward to form a snap-fit ​​portion, which is adapted to abut against the moving contact (15).

8. The auxiliary circuit connector for the power distribution cabinet according to claim 6, characterized in that, The movable plug (1) is provided with a conventional contact (16), and the conventional contact (16) is provided with a wiring component. The movable plug (1) is adapted to be electrically connected to an external line through the wiring component.

9. The auxiliary circuit connector for the power distribution cabinet according to claim 8, characterized in that, The wiring assembly includes: A snap ring connector (17) is adapted to snap and fix the wire in the conventional contact (16) and abut against the movable contact (15).

10. The auxiliary circuit connector for the power distribution cabinet according to claim 9, characterized in that, The wiring assembly also includes: A pusher (18) is disposed on the moving insert (1) and is connected to the rotating arm of the snap ring connector (17). By pressing the pusher (18), the wire can be separated from the moving contact piece (15).

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