Mutual inductor connected in button mode

Abstract

The utility model discloses a mutual inductor connected in a button mode, which comprises an upper shell and a lower shell, both the upper shell and the lower shell are semicircular, one end of the upper shell is rotatably connected with one end of the lower shell, and the other end of the upper shell and the other end of the lower shell are provided with a button connecting structure. The button connecting structure is used for quickly disassembling and assembling the opening and closing ends of the upper shell and the lower shell; the button connecting structure comprises a button assembly installed at the opening and closing end of the upper shell and a retention block installed at the opening and closing end of the lower shell. The button assembly comprises a pair of pressing rods and a clamping rod, a mounting groove penetrating through the opening and closing end is formed in the opening and closing end of the upper shell, and the pair of pressing rods are movably mounted on the two sides of the mounting groove. The disassembly and assembly efficiency is improved, the use is convenient, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, specifically a current transformer connected by a push-button connection. Background Technology

[0002] Current transformers operate on the principle of electromagnetic induction and generally consist of a closed iron core and windings. The main function of a current transformer is to proportionally transform large currents into standard small currents, enabling the standardization and miniaturization of measuring instruments, protection devices, and automatic control equipment. Currently, the through-core type current transformer consists of a toroidal iron core, a secondary coil wound around the toroidal iron core, and an insulating shell. In existing technology, the insulating shell of the current transformer is divided into two semi-circular shells, hinged at one end and connected to a connecting seat at the other end. Closure of the two semi-circular shells is achieved by passing connecting bolts through the connecting seats and tightening them with connecting nuts. However, this connection method, relying on tightening the connecting bolts and nuts, is complex to install and requires tools such as wrenches. Furthermore, the connecting seats are prone to damage with prolonged use, leading to malfunctions of the current transformer. Therefore, a button-type current transformer is needed to address these issues. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a current transformer with a push-button connection. This aims to solve the technical problem that existing current transformers are locked and fixed by connecting bolts and nuts with connecting seats, requiring the use of tools such as wrenches, resulting in complex installation and operation. Furthermore, the connecting seats are prone to damage after prolonged use, leading to the current transformer's inability to function properly.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A current transformer with a button connection includes an upper housing and a lower housing. Both the upper housing and the lower housing are configured as semi-circular rings. The upper housing and the lower housing are rotatably connected at one end, and a button connection structure is provided at the other end of the upper housing and the lower housing. The button connection structure is used to quickly detach and assemble the opening and closing ends of the upper housing and the lower housing.

[0006] The button connection structure includes a button assembly installed on the opening and closing end of the upper housing and a retaining block installed on the opening and closing end of the lower housing.

[0007] The button assembly includes a pair of pressing rods and a locking rod. The opening and closing end of the upper housing has a through mounting groove. The pair of pressing rods are movably mounted on both sides of the mounting groove. The ends of the pressing rods that are far apart extend out of the mounting groove. The locking rod is disposed on the outer wall of the pressing rod. The locking rod and the pressing rod are detachably installed. The end face of the opening and closing end of the upper housing has a through groove communicating with the mounting groove. The through groove is used for the locking rod to pass through.

[0008] The retaining block is disposed on the opening and closing end of the lower housing. The retaining block and the lower housing are detachably installed. The retaining block has a receiving cavity for the pressing rod to enter on the side near the button assembly. Both sides of the receiving cavity have locking rod slots for the pressing rod to be engaged.

[0009] Preferably, a return spring is provided between the two pressing rods and within the mounting groove, and a spring limiting groove is provided on the opposite side of the two pressing rods, with the two ends of the return spring respectively installed into the spring limiting grooves of the two pressing rods.

[0010] Preferably, guide ramps are provided on both sides of the top of the receiving cavity, and the bottom end of the locking rod is provided with an inclined surface that slides in cooperation with the guide ramps.

[0011] Preferably, a positioning slot is provided on the outer wall of the pressing rod, one end of the locking rod is inserted into the positioning slot, and the locking rod and the pressing rod are fixedly connected by screws.

[0012] Preferably, the lower housing has a receiving groove on its opening and closing end, the retaining block is embedded in the receiving groove, a retaining plate is fixedly connected to one side of the retaining block, a retaining groove for receiving the retaining plate is provided on one side of the receiving groove, and the retaining plate is fixedly connected to the lower housing by screws.

[0013] Preferably, a sealing groove is formed at the edge of the opening and closing end face of both the upper and lower housings, and a sealing ring is embedded in the sealing groove.

[0014] Preferably, the two sealing rings are staggered, one end of each sealing ring extends into a sealing groove and the end face is provided with a double waterproof line, the inner wall and outer wall of each sealing ring are provided with a limiting protrusion, and the inner walls on both sides of the sealing groove are provided with a limiting groove for the limiting protrusion to be inserted.

[0015] Preferably, waterproof rings are embedded in the inner walls of both ends of the mounting groove, and the inner walls of the waterproof rings abut against the pressing rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model utilizes a button connection structure to close the opening and closing ends of the upper and lower housings, allowing the pressing rod to be inserted into the receiving cavity of the retaining block. After the upper and lower housings are closed in place, the return spring pushes the two sets of pressing rods and locking rods away from each other, causing the locking end of the locking rod to engage with the locking rod slot in the receiving cavity, thus locking and fixing the opening and closing ends of the upper and lower housings. When the upper and lower housings are to be opened and disassembled, simply press both pressing rods simultaneously towards the upper housing to retract the pressing rods into the mounting slots, thereby moving the two pressing rods closer together and disengaging them from the locking rod slots, releasing the locking installation of the upper and lower housings. This facilitates quick disassembly of the current transformer. The current transformer is easy to assemble and disassemble without tools, improving efficiency and making it convenient and highly practical. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a current transformer with a push-button connection.

[0019] Figure 2 This is a schematic diagram of the upper and lower shells in their open state.

[0020] Figure 3 This is a cross-sectional view of the button assembly on the upper housing.

[0021] Figure 4 This is a schematic diagram showing the disassembled structure of the pressing rod and the locking rod;

[0022] Figure 5 This is a schematic diagram of the disassembled structure of the retaining block and the lower shell;

[0023] Figure 6 This is a schematic diagram of the sealing ring structure.

[0024] In the diagram: 1. Upper housing; 11. Mounting groove; 12. Through groove; 2. Lower housing; 21. Receiving groove; 22. Retaining groove; 3. Button assembly; 31. Pressing rod; 311. Positioning slot; 32. Snap-fit ​​rod; 33. Return spring; 4. Retaining block; 41. Receiving cavity; 42. Snap-fit ​​rod slot; 43. Guide ramp; 44. Retaining plate; 5. Sealing ring; 51. Limiting protrusion; 52. Double waterproof line. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example:

[0027] Please see Figures 1-6 This embodiment provides a current transformer with a button-type connection, including an upper housing 1 and a lower housing 2. Both the upper housing 1 and the lower housing 2 are set as semi-circular rings. The upper housing 1 and the lower housing 2 are rotatably connected at one end, and the upper housing 1 and the lower housing 2 are spliced ​​to form a complete ring. The connection end of the upper housing 1 and the lower housing 2 is fixedly connected. The upper housing 1 and the lower housing 2 are provided with coils inside. Such a structure has been fully disclosed in the prior art and will not be elaborated here. In this utility model, the other end of the upper housing 1 and the lower housing 2 is provided with a button connection structure. The button connection structure is used to quickly disassemble and assemble the opening and closing ends of the upper housing 1 and the lower housing 2. The button connection structure facilitates the quick closing and opening of the upper housing 1 and the lower housing 2, making the current transformer easy to disassemble and assemble without the need for tools, improving disassembly and assembly efficiency, making it convenient to use, and highly practical.

[0028] In this embodiment, as Figure 2 As shown, the button connection structure includes a button assembly 3 installed on the opening and closing end of the upper housing 1 and a retaining block 4 installed on the opening and closing end of the lower housing 2.

[0029] Specifically, such as Figure 3 As shown, the button assembly 3 includes a pair of pressing rods 31 and a locking rod 32. A mounting groove 11 is provided on the opening / closing end of the upper housing 1, through which the pressing rods 31 pass. The pair of pressing rods 31 are movably mounted on both sides of the mounting groove 11, with the ends of the pressing rods 31 extending out of the mounting groove 11. The locking rod 32 is disposed on the outer wall of the pressing rod 31, and the locking rod 32 is detachably mounted to the pressing rod 31. A through groove 12 communicating with the mounting groove 11 is provided on the end face of the opening / closing end of the upper housing 1. The through groove 12 is used for receiving the locking rod. A return spring 33 is provided between the two pressing rods 31 and within the mounting groove 11, through which the connecting rod 32 passes. A spring limiting groove is provided on the opposite side of each of the two pressing rods 31. The two ends of the return spring 33 are respectively installed into the spring limiting grooves of the two pressing rods 31. When the upper housing 1 and the lower housing 2 are open, the two pressing rods 31 are pushed away from each other by the action of the return spring 33, so that the two locking rods 32 are also moved away from each other, and the distance between the two pressing rods 31 is at its maximum.

[0030] The retaining block 4 is set on the opening and closing end of the lower housing 2. The retaining block 4 and the lower housing 2 can be detachably installed. The retaining block 4 has a receiving cavity 41 for the pressing rod 31 to enter on the side near the button assembly 3. Both sides of the receiving cavity 41 have a locking rod slot 42 for the pressing rod 31 to be inserted.

[0031] Based on the above scheme, when the upper housing 1 and the lower housing 2 are closed and locked, the opening and closing ends of the upper housing 1 and the lower housing 2 are closed and in contact, so that the pressing rod 31 is inserted into the receiving cavity 41 of the fixing block 4. After the upper housing 1 and the lower housing 2 are closed in place, the two sets of pressing rods 31 and locking rods 32 are pushed away from each other by the action of the return spring 33, so that the locking end of the locking rod 32 is locked into the locking rod slot 42 of the receiving cavity 41, thereby realizing the locking and fixing of the opening and closing ends of the upper housing 1 and the lower housing 2, which facilitates the quick installation of the current transformer. When the upper housing 1 and the lower housing 2 are opened and disassembled, it is only necessary to press the two pressing rods 31 simultaneously towards the upper housing 1, so that the pressing rods 31 can be moved back into the mounting groove 11, thereby driving the two pressing rods 31 to move closer, so that the pressing rods 31 are disengaged from the locking rod slot 42, thereby releasing the locking installation of the upper housing 1 and the lower housing 2, which facilitates the quick disassembly of the current transformer. The structure is simple and easy to use.

[0032] Furthermore, such as Figure 5 As shown, guide ramps 43 are provided on both sides of the top of the receiving cavity 41. The bottom end of the locking rod 32 is provided with an inclined surface that slides in cooperation with the guide ramps 43. When the housing 1 and the lower housing 2 are closed, the locking rod 32 gradually enters the receiving cavity 41. The inclined surface of the locking rod 32 slides in cooperation with the guide ramps 43. Under the action of the return spring 33, the position of the locking rod 32 is automatically adjusted so that the locking rod 32 can smoothly enter the receiving cavity 41 and be locked into the locking rod slot 42, realizing convenient locking and fixing of the upper housing 1 and the lower housing 2.

[0033] In this embodiment, as Figure 4 As shown, a positioning slot 311 is provided on the outer wall of the pressing rod 31. One end of the locking rod 32 is inserted into the positioning slot 311. The locking rod 32 and the pressing rod 31 are fixedly connected by screws. A first fixing hole is provided on the pressing rod 31, and a second fixing hole corresponding to the position of the first fixing hole is provided on the inner wall of the positioning slot 311. The locking rod 32 and the pressing rod 31 are connected and fixed by screws passing through the first fixing hole and the second fixing hole, which facilitates the disassembly and replacement of the locking rod 32. By inserting the locking rod 32 into the positioning slot 311 of the pressing rod 31 for installation and positioning, it helps to locate the installation position of the locking rod 32, ensures the consistency of the installation position of the locking rod 32, and can provide sufficient support for the connection between the locking rod 32 and the pressing rod 31, avoiding the problem of breakage and separation due to excessive force at the connection between the locking rod 32 and the pressing rod 31.

[0034] In this embodiment, as Figure 5As shown, the lower housing 2 has a receiving groove 21 on its opening and closing end. The retaining block 4 is embedded in the receiving groove 21. A retaining plate 44 is fixedly connected to one side of the retaining block 4. The retaining plate 44 and the retaining block 4 are integrally formed. A retaining groove 22 for receiving the retaining plate 44 is provided on one side of the receiving groove 21. The retaining plate 44 and the lower housing 2 are fixedly connected by screws. A third fixing hole is provided on the retaining plate 44. A fourth fixing hole corresponding to the position of the third fixing hole is provided on the inner wall of the retaining groove 22. Screws are passed through the third fixing hole and the fourth fixing hole to connect the retaining plate 44 and the retaining block 4 to the lower housing 2, which facilitates the disassembly and replacement of the retaining block 4. It enables quick replacement of the worn locking rod 32 and the retaining block 4, ensuring the locking and closing stability of the upper housing 1 and the lower housing 2. It eliminates the need to replace the entire current transformer, reduces costs, and has high practicality.

[0035] In this embodiment, as Figure 2 and Figure 6 As shown, a sealing groove is formed at the edge of the opening and closing end face of both the upper housing 1 and the lower housing 2. A sealing ring 5 is embedded in the sealing groove. The two sealing rings 5 ​​are staggered. When the upper housing 1 and the lower housing 2 are closed and locked, the two sealing rings 5 ​​improve the sealing performance of the connection. One end of each sealing ring 5 extends out of the sealing groove and the end face is provided with a double waterproof line 52. A limiting protrusion 51 is provided on both the inner and outer walls of the sealing ring 5. A limiting groove is formed on the inner walls on both sides of the sealing groove for the limiting protrusion 51 to be inserted. The two mounting grooves 11 are... Waterproof rings are embedded in the inner walls of each end, and the inner walls of the waterproof rings abut against the pressing rod 31. The sealing ring 5 is inserted into the limiting groove of the sealing groove by the limiting protrusion 51, which is used to fix the sealing ring 5 firmly in the sealing groove and prevent the sealing ring 5 from falling out of the sealing groove. The double waterproof line 52 provides a double waterproof effect, which greatly improves the sealing performance. The waterproof rings improve the sealing performance between the pressing rod 31 and the mounting groove 11 of the upper housing 1, prevent water intrusion, ensure the stable operation of the current transformer, and improve its service life.

[0036] Working principle: When installing this current transformer, the upper housing 1 and lower housing 2, in their open state, are placed outside the cable. Then, the opening and closing ends of the upper housing 1 and lower housing 2 are closed, allowing the locking rod 32 to gradually enter the receiving cavity 41. The inclined surface of the locking rod 32 slides in cooperation with the guide ramp 43, and under the action of the return spring 33, the position of the locking rod 32 is automatically adjusted, allowing the locking rod 32 to smoothly enter the receiving cavity 41 and lock into the rod slot 42, thereby locking and fixing the upper housing 1 and lower housing 2, achieving rapid installation of the current transformer. The sealing performance at the connection between the upper housing 1 and lower housing 2 is improved by two staggered sealing rings 5, and the double waterproof line 52 set on the sealing rings 5 ​​further enhances the sealing performance. Achieving double waterproofing and further improving sealing, the waterproof rings between the inner walls of the mounting groove 11 and the pressing rod 31 at both ends enhance the seal between the pressing rod 31 and the mounting groove 11 of the upper housing 1, preventing water intrusion, ensuring stable operation of the current transformer, and extending its service life. When disassembling the current transformer, simply press both pressing rods 31 simultaneously towards the upper housing 1 to retract them into the mounting groove 11, thereby moving the two pressing rods 31 closer together and disengaging them from the locking rod slot 42, thus releasing the locking installation of the upper housing 1 and the lower housing 2. This makes the current transformer easy to assemble and disassemble without tools, improving efficiency, ease of use, and high practicality.

[0037] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A current transformer connected by a push-button mechanism, comprising an upper housing (1) and a lower housing (2), wherein both the upper housing (1) and the lower housing (2) are configured as semi-circular rings, characterized in that: The upper housing (1) and the lower housing (2) are rotatably connected at one end, and a button connection structure is provided at the other end of the upper housing (1) and the lower housing (2). The button connection structure is used to quickly detach and install the opening and closing ends of the upper housing (1) and the lower housing (2). The button connection structure includes a button assembly (3) installed on the opening and closing end of the upper housing (1) and a retaining block (4) installed on the opening and closing end of the lower housing (2); The button assembly (3) includes a pair of pressing rods (31) and a locking rod (32). The upper housing (1) has an opening and closing end with a through mounting groove (11). The pair of pressing rods (31) are movably installed on both sides of the mounting groove (11). The ends of the pressing rods (31) that are far apart extend out of the mounting groove (11). The locking rod (32) is set on the outer wall of the pressing rod (31). The locking rod (32) and the pressing rod (31) are detachably installed. The end face of the opening and closing end of the upper housing (1) has a through groove (12) that communicates with the mounting groove (11). The through groove (12) is used for the locking rod (32) to pass through. The retaining block (4) is disposed on the opening and closing end of the lower housing (2). The retaining block (4) and the lower housing (2) are detachably installed. The retaining block (4) has a receiving cavity (41) for the pressing rod (31) to enter on the side near the button assembly (3). Both sides of the receiving cavity (41) have locking rod slots (42) for the pressing rod (31) to be inserted.

2. The current transformer connected by a button according to claim 1, characterized in that: A reset spring (33) is provided between the two pressing rods (31) and in the mounting groove (11). A spring limiting groove is provided on the opposite side of the two pressing rods (31). The two ends of the reset spring (33) are respectively installed into the spring limiting grooves of the two pressing rods (31).

3. A current transformer connected by a button according to claim 1, characterized in that: The top of the receiving cavity (41) is provided with guide ramps (43) on both sides, and the bottom end of the snap rod (32) is provided with an inclined surface that slides in cooperation with the guide ramps (43).

4. A current transformer connected by a button according to claim 1, characterized in that: The outer wall of the pressing rod (31) is provided with a positioning slot (311), one end of the snap-fit ​​rod (32) is inserted into the positioning slot (311), and the snap-fit ​​rod (32) and the pressing rod (31) are fixedly connected by screws.

5. A current transformer connected by a button according to claim 1, characterized in that: The lower housing (2) has a receiving groove (21) on its opening and closing end. The retaining block (4) is embedded in the receiving groove (21). A retaining plate (44) is fixedly connected to one side of the retaining block (4). A retaining groove (22) for receiving the retaining plate (44) is provided on one side of the receiving groove (21). The retaining plate (44) is fixedly connected to the lower housing (2) by screws.

6. A current transformer connected by a button according to claim 1, characterized in that: A sealing groove is provided at the edge of the opening and closing end face of the upper shell (1) and the lower shell (2), and a sealing ring (5) is embedded in the sealing groove.

7. A current transformer connected by a button according to claim 6, characterized in that: The two sealing rings (5) are staggered. One end of each sealing ring (5) extends out of a sealing groove and the end face is provided with a double waterproof line (52). The inner and outer walls of the sealing ring (5) are provided with a limiting protrusion (51). The inner walls on both sides of the sealing groove are provided with a limiting groove for the limiting protrusion (51) to be inserted.

8. A current transformer connected by a button according to claim 4, characterized in that: Waterproof rings are embedded in the inner walls of both ends of the mounting groove (11), and the inner walls of the waterproof rings abut against the pressing rod (31).

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