Waterproof current transformer
Through the connection design of the plug and interface, the waterproofing plate and water absorption block structure, the problem of insufficient waterproof performance of the current transformer in the outdoor ring grid cabinet is solved, and better waterproof performance and connection stability are achieved.
Patent Information
- Application Number
- CN202422441780.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The current transformer has poor waterproof performance in outdoor ring grid cabinets, which may affect the connection between the wiring tabs and wires and affect normal operation.
The plug and interface connection design is adopted to enable the connection wire to be connected to the internal circuit of the housing, and the interface is sealed through the plug, combining the water barrier, water absorbing block and fixed structure to reduce the possibility of moisture entering.
The waterproof performance of the current transformer is improved, making it suitable for humid environments, with more stable connections and reducing the impact of external moisture on the connection lines and lines.
Smart Images
Figure CN223296641U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of current transformers, and in particular to a waterproof current transformer. Background Art
[0002] A current transformer is an electrical device that works based on the principle of electromagnetic induction. It is used to convert high current on the primary side into low current on the secondary side. Current transformers can be used in indoor ring network cabinets or outdoor ring network cabinets.
[0003] In the related art, the current transformer includes a shell with multiple through holes, three terminal lugs, terminal slots, and terminal bolts. The terminal bolts pass through the wires and are inserted into the terminal slots to achieve connectivity between the wires and the circuit inside the shell.
[0004] Since the current transformer can be installed in an outdoor ring network cabinet, the outdoor ring network cabinet may become humid, causing some water droplets to affect the connection between the terminal block and the wire, affecting the normal operation of the current transformer. Therefore, the waterproof performance of the current transformer is poor. Utility Model Content
[0005] In order to improve the problem of poor waterproof performance of the current transformer, the present application provides a waterproof current transformer.
[0006] The present application provides a waterproof current transformer, which adopts the following technical solution:
[0007] A waterproof current transformer comprises a shell, an interface is provided on the shell, a plug is provided on the shell, and a connecting wire for connecting a conductor is provided on the plug. When the plug is inserted into the interface, the connecting wire can connect to the circuit in the shell.
[0008] By adopting the above technical solution, the plug is installed on the interface, so that the connecting line can be connected to the circuit inside the shell, so that the plug blocks the opening of the interface, reducing the possibility of moisture entering through the plug and the interface, improving the waterproof performance of the current transformer, and making the current transformer suitable for more humid scenarios.
[0009] Optionally, a protective cover is provided on the plug, and the connecting wire is located inside the protective cover.
[0010] By adopting the above technical solution, the connecting wire is located in the protective cover, so that the protective cover can protect the connecting wire and reduce the damage to the connecting wire from the outside; at the same time, external moisture cannot directly contact the connecting wire, so that the connection between the connecting wire and the conductor can be more stable, further improving the waterproof performance of the current transformer.
[0011] Optionally, a water retaining plate is provided on the interface, and the water retaining plate is located between the plug and the shell.
[0012] By adopting the above technical solution, the water retaining plate is located between the plug and the shell, so that the water retaining plate can limit the moisture from directly entering the shell through the gap between the plug and the interface, reducing the possibility of the connection between the connecting wire and the line in the shell being affected by moisture, and further improving the waterproof performance of the current transformer.
[0013] Optionally, a receiving groove is provided on the water retaining plate, a receiving spring is provided in the receiving groove, a water absorbing block is detachably connected to the receiving spring, and the receiving spring drives the water absorbing block to protrude from the receiving groove. When the plug is installed on the interface, the water absorbing block abuts the plug.
[0014] By adopting the above technical solution, the spring is used to drive the water-absorbing block to protrude from the receiving groove, so that the water-absorbing block can abut the plug, making it difficult for moisture to enter from the gap between the plug and the interface, further reducing the impact of moisture on the plug and the interface; at the same time, the spring is used to drive the water-absorbing sheet to protrude from the receiving groove, so that excess moisture can diffuse into the receiving groove, reducing the possibility of moisture spreading to the interface.
[0015] Optionally, a card slot for inserting a water absorbing block is provided on the surface of the plug, a sliding hole connected to the card slot is provided on the plug, a fixing strip is slidably connected in the sliding hole, and a limiting groove for inserting the fixing strip is provided on the water absorbing block. When the fixing strip is inserted into the limiting groove, the water absorbing block is fixed in the card slot.
[0016] By adopting the above technical solution, the fixing bar slides in the sliding hole, so that the fixing bar can be smoothly inserted into the limiting groove, so that the groove wall of the limiting groove limits the fixing bar, so that the fixing bar and the water absorbing block can be fixed to each other, making it difficult for the fixing bar to separate from the water baffle, reducing the possibility of sliding between the plug and the water baffle, and then allowing the plug to be stably fixed at the interface, reducing the occurrence of separation of the plug and the interface due to accidental touching of the plug by outsiders.
[0017] Optionally, a fixing spring is provided on the fixing bar, and the fixing spring drives the fixing bar to be inserted into the limiting groove.
[0018] By adopting the above technical solution, the fixing bar is driven to move by the fixing spring, so that the fixing bar is inserted into the limiting groove, making it difficult for the fixing bar to separate from the limiting groove, thereby allowing the fixing bar and the water absorbing block to be fixed to each other, reducing the possibility of separation of the fixing bar and the water absorbing block.
[0019] Optionally, a fixing block is rotatably connected to the fixing bar, and a fixing groove for inserting the fixing block is provided on the plug. When the fixing block is inserted into the fixing groove, the fixing bar is not inserted into the limiting groove.
[0020] By adopting the above technical solution, the staff rotates the fixed block and inserts the fixed block into the fixed groove, so that the fixed block restricts the fixed bar, reducing the movement of the fixed bar toward the limit groove, so that the fixed bar will not affect the movement of the water absorbing block, so that the water absorbing block can be smoothly inserted into the slot. Then the staff rotates the fixed block and allows the fixing spring to drive the fixed bar to move, so that the fixed bar can be smoothly inserted into the limit groove, thereby realizing the mutual fixation of the fixed bar and the water absorbing block.
[0021] Optionally, a accommodating plate is provided on the accommodating spring, a dovetail block is provided on the accommodating plate, a dovetail groove for the dovetail block to slide is provided on the water absorbing block, a groove for the dovetail block to be inserted is provided on the water absorbing block, and the groove is connected to the dovetail groove; when the dovetail block is located in the dovetail groove, the water absorbing block is fixed on the accommodating plate; when the dovetail block is located in the groove, the water absorbing block can be detached from the accommodating plate.
[0022] By adopting the above technical solution, the dovetail block is located in the groove, so that the dovetail block can be taken out from the containing plate through the groove, so that the containing plate and the water absorbing block can be separated, and the water absorbing block can be replaced, avoiding the problem of poor water absorption effect after the water absorbing block absorbs water; the dovetail block is in the dovetail groove, so that the groove wall of the dovetail groove restricts the dovetail block, so that the containing plate and the water absorbing block can be fixed to each other, so that the water absorbing block can be stably fixed to the containing plate, reducing the possibility of separation of the water absorbing block and the containing spring.
[0023] Optionally, the interface is provided with a stop sleeve for the connection line to pass through, and the stop sleeve and the plug can be threadedly connected.
[0024] By adopting the above technical solution, the plug can be fixed on the interface through the threaded connection between the stop sleeve and the plug, making it difficult for the plug and the interface to be separated from each other, thereby allowing the connecting line and the circuit inside the shell to be stably connected.
[0025] In summary, this application includes at least one of the following beneficial technical effects:
[0026] 1. The plug is installed on the interface so that the connecting wire can be connected to the circuit inside the shell, so that the plug can block the interface, reducing the possibility of moisture entering through the plug and interface, improving the waterproof performance of the current transformer, and making the current transformer suitable for more humid scenes.
[0027] 2. The fixing strip slides in the sliding hole so that the fixing strip can be smoothly inserted into the limiting groove, so that the groove wall of the limiting groove limits the fixing strip, so that the fixing strip and the water absorbent block can be fixed to each other, making it difficult for the fixing strip to separate from the water baffle, reducing the possibility of sliding between the plug and the water baffle, and thus allowing the plug to be stably fixed at the interface, reducing the occurrence of separation of the plug and the interface caused by accidental touching of the plug by outsiders. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 is a schematic structural diagram of Example 1;
[0029] Figure 2 It is along Figure 1 Partial cross-sectional view along line AA;
[0030] Figure 3 is a schematic structural diagram of Example 2;
[0031] Figure 4 It is along Figure 3 Partial cross-sectional view of the midline BB;
[0032] Figure 5 is an exploded schematic diagram highlighting the dovetail groove in Example 2;
[0033] Figure 6 yes Figure 4 Enlarged schematic diagram of part C.
[0034] Figure numerals: 1. Shell; 11. Interface; 12. Water retaining plate; 13. Stop sleeve; 14. Accommodating groove; 141. Accommodating spring; 142. Accommodating plate; 143. Dovetail block; 15. Water absorbing block; 151. Groove; 152. Dovetail groove; 153. Limiting groove; 2. Plug; 21. Connecting wire; 22. Protective cover; 23. Card slot; 24. Sliding hole; 241. Fixing bar; 25. Accommodating groove; 251. Accommodating plate; 252. Fixing spring; 26. Fixing block; 261. Fixing groove. DETAILED DESCRIPTION
[0035] The following is combined with Figure 1-6 This application is described in further detail.
[0036] Example 1
[0037] This embodiment discloses a current transformer with waterproof function. Figure 1 and Figure 2 A waterproof current transformer includes a shell 1, an interface 11 is provided on the surface of the shell 1, a water retaining plate 12 is fixedly connected to the interface 11, and the surface of the water retaining plate 12 is away from the shell 1 and is not coplanar with the shell 1, that is, the water retaining plate 12 protrudes from the shell 1.
[0038] Reference Figure 1 and Figure 2 The housing 1 is provided with a plug 2 that can be inserted into the interface 11. Plug 2 is provided with multiple connecting wires 21 that can be connected to the wires. A protective cover 22 is fixedly connected to the plug 2, and the multiple connecting wires 21 are all located within the protective cover 22. Multiple circuits are provided inside the housing 1, and the circuits can communicate with the connecting wires 21. When the plug 2 is inserted into the interface 11, the connecting wires 21 communicate with the circuits within the housing 1.
[0039] Reference Figure 1 and Figure 2 A stopper sleeve 13 is fixedly connected to the surface of the water retaining plate 12, through which the connecting wire 21 can be inserted and connected to the circuit inside the housing 1. The outer surface of the stopper sleeve 13 is provided with an external thread. The inner wall of the plug 2 is provided with an internal thread, that is, the plug 2 and the stopper sleeve 13 can be threadedly connected to each other, thereby fixing the plug 2 and the interface 11 to each other.
[0040] The implementation principle of Example 1 is as follows: the staff fixes the plug 2 and the interface 11 so that the connecting line 21 is connected to the internal circuit of the shell 1, so that the circuit is not exposed on the shell 1, reducing the interference of external moisture on the circuit.
[0041] Example 2
[0042] Reference Figure 3 and Figure 4 This embodiment differs from Embodiment 1 in that a receiving groove 14 is formed on the surface of the water retaining plate 12, and the receiving groove 14 is arranged in an annular shape. A plurality of receiving springs 141 are fixedly connected to the bottom wall of the receiving groove 14, and the plurality of receiving springs 141 are arranged in an array along the length of the receiving groove 14. A receiving plate 142 is fixedly connected to the surface of the receiving springs 141 away from the bottom wall of the receiving groove 14, and the receiving plate 142 is annular.
[0043] Reference Figure 4 and Figure 5 A dovetail block 143 is fixedly attached to the surface of the receiving plate 142 away from the receiving spring 141. A water absorbing block 15 is provided on the receiving plate 142. This water absorbing block 15 is annular and capable of absorbing water. A groove 151 is defined on the surface of the water absorbing block 15 for insertion of the dovetail block 143. A dovetail slot 152 is defined on the surface of the water absorbing block 155 for sliding of the dovetail block 143. The dovetail slot 152 is connected to the groove 151. Once the dovetail block 143 is inserted into the dovetail slot 152, it cannot be directly removed from the dovetail slot 152.
[0044] Reference Figure 4 and Figure 5When the dovetail block 143 is inserted into the groove 151, the water absorbing block 15 is placed on the receiving plate 142. The water absorbing block 15 is then rotated to insert the dovetail block 143 into the dovetail groove 152, thereby fixing the water absorbing block 15 on the receiving plate 142. The receiving spring 141 drives the water absorbing block 15 out of the receiving groove 14; that is, when the water absorbing block 15 is protruding from the receiving groove 14, the receiving spring 141 is in a non-stressed state; when the water absorbing block 15 is located in the receiving groove 14, the receiving spring 141 is in a compressed state.
[0045] Reference Figure 6 The surface of the plug 2 is provided with a ring-shaped card slot 23 for inserting the water absorbent block 15. The outer surface of the plug 2 is provided with a sliding hole 24 connected to the card slot 23. A fixing bar 241 is slidably connected to the sliding hole 24 and can be inserted into the card slot 23.
[0046] Reference Figure 6 A limiting groove 153 is provided on the surface of the water absorbing block 15 for inserting the fixing strip 241. When the fixing strip 241 is inserted into the limiting groove 153, the water absorbing block 15 is located in the card slot 23. At this time, the fixing strip 241 and the water absorbing block 15 are fixed to each other.
[0047] Reference Figure 6 Two receiving grooves 25 are formed on the wall of the sliding hole 24, extending along the length of the sliding hole 24. Two receiving plates 251 are fixedly connected to the surface of the fixing bar 241, and the receiving plates 251 are capable of sliding within the receiving grooves 25. A fixing spring 252 is fixedly connected to the surface of the receiving plate 251. The fixing spring 252 drives the fixing bar 241 to be inserted into the slot 23 through the receiving plate 251, thereby fixing the fixing bar 241 and the water absorbent block 15 to each other. When the fixing bar 241 is located in the limiting groove 153, the fixing spring 252 is in a non-stressed state; when the fixing bar 241 is not in the limiting groove 153, the fixing spring 252 is in a compressed state.
[0048] Reference Figure 6 The end surface of the fixing bar 241 away from the slot 23 is rotatably connected to the fixing block 26. A fixing groove 261 is formed on the outer surface of the plug 2 for the fixing block 26 to be inserted into. The fixing groove 261 is connected to the sliding hole 24. When the fixing block 26 is inserted into the fixing groove 261, the fixing bar 241 cannot be inserted into the limiting groove 153. When the fixing block 26 is located in the sliding hole 24, the fixing bar 241 can be inserted into the limiting groove 153, thereby fixing the fixing bar 241 and the water absorbent block 15 to each other.
[0049] The implementation principle of Example 2 is as follows: the staff rotates the fixing block 26 to insert the fixing block 26 into the fixing groove 261, so that the fixing bar 241 does not limit the water absorbing block 15. The staff inserts the plug 2 into the interface 11 to connect the connecting line 21 and the line. The staff then rotates the fixing block 26 to allow the fixing spring 252 to drive the fixing bar 241 to insert into the limiting groove 153, thereby realizing the mutual fixation of the fixing bar 241 and the water absorbing block 15.
[0050] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present application should be included in the scope of protection of the present application.
Claims
1. A waterproof current transformer, comprising a housing (1), characterized in that: The housing (1) is provided with an interface (11), the housing (1) is provided with a plug (2), the plug (2) is provided with a connecting wire (21) for connecting a wire, and when the plug (2) is inserted into the interface (11), the connecting wire (21) can be connected to the circuit in the housing (1); The interface (11) is provided with a water retaining plate (12), and the water retaining plate (12) is located between the plug (2) and the housing (1).
2. The waterproof current transformer according to claim 1, characterized in that: The plug (2) is provided with a protective sleeve (22), and the connecting wire (21) is located inside the protective sleeve (22).
3. The waterproof current transformer according to claim 1, characterized in that: The water retaining plate (12) is provided with a receiving groove (14), a receiving spring (141) is provided in the receiving groove (14), a water absorbing block (15) is detachably connected to the receiving spring (141), the receiving spring (141) drives the water absorbing block (15) to protrude from the receiving groove (14), and when the plug (2) is installed on the interface (11), the water absorbing block (15) abuts against the plug (2).
4. The waterproof current transformer according to claim 3, characterized in that: A card slot (23) for inserting the water absorbing block (15) is provided on the surface of the plug (2), a sliding hole (24) communicating with the card slot (23) is provided on the plug (2), a fixing bar (241) is slidably connected in the sliding hole (24), and a limiting groove (153) for inserting the fixing bar (241) is provided on the water absorbing block (15), and when the fixing bar (241) is inserted into the limiting groove (153), the water absorbing block (15) is fixed in the card slot (23).
5. The waterproof current transformer according to claim 4, characterized in that: A fixing spring (252) is provided on the fixing bar (241), and the fixing spring (252) drives the fixing bar (241) to be inserted into the limiting groove (153).
6. The waterproof current transformer according to claim 5, characterized in that: The fixing bar (241) is rotatably connected to a fixing block (26), and the plug (2) is provided with a fixing slot (261) for inserting the fixing block (26). When the fixing block (26) is inserted into the fixing slot (261), the fixing bar (241) is not inserted into the limiting slot (153).
7. The waterproof current transformer according to claim 3, characterized in that: The accommodating spring (141) is provided with an accommodating plate (142), the accommodating plate (142) is provided with a dovetail block (143), the water absorbing block (15) is provided with a dovetail groove (152) for the dovetail block (143) to slide, the water absorbing block (15) is provided with a groove (151) for the dovetail block (143) to be inserted into, and the groove (151) is connected to the dovetail groove (152); when the dovetail block (143) is located in the dovetail groove (152), the water absorbing block (15) is fixed to the accommodating plate (142); when the dovetail block (143) is located in the groove (151), the water absorbing block (15) can be separated from the accommodating plate (142).
8. The waterproof current transformer according to claim 1, characterized in that: The interface (11) is provided with a stop sleeve (13) for the connection line (21) to pass through, and the stop sleeve (13) and the plug (2) can be threadedly connected.