Mutual inductor in hasp connection mode

Abstract

The utility model discloses a hasp connection mode mutual inductor which comprises a semicircular upper shell and a semicircular lower shell, one end of the upper shell is rotatably connected with one end of the lower shell, the other end of the upper shell is fixedly connected with the other end of the lower shell through a hasp assembly, and the hasp assembly comprises a connecting seat fixedly connected to the outer wall of the opening and closing end of the upper shell. A pressing block is rotationally connected to the connecting base through a first rotating shaft pin, a hasp is rotationally connected to the middle position of the pressing block through a second rotating shaft pin, the hasp assembly further comprises a clamping block arranged on the outer wall of the opening and closing end of the lower shell, and a clamping groove allowing the clamping block to be clamped in is formed in the hasp; a locking structure is arranged between the pressing block and the upper shell and used for locking the position of the pressing block when the hasp and the clamping block are clamped, the current transformer is convenient to disassemble through the hasp assembly, the operation steps are simple and convenient, a disassembling tool is not needed, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a transformer with a buckle connection method. Background Art

[0002] The working principle of the current transformer is electromagnetic induction, and it is generally composed of a closed iron core and a winding. The function of the current transformer is mainly to convert a large current into a standard small current in proportion, so as to realize the standardization and miniaturization of measuring instruments, protection equipment and automatic control equipment. At present, the through-type current transformer is composed of a ring-shaped iron core, a secondary coil wound on the ring-shaped iron core and an insulating shell. In the prior art, the insulating shell of the current transformer is divided into two semicircular shells, one end of the two semicircular shells is hinged and rotated, and the other end is provided with a connecting seat. The connection bolts are passed through the connecting seats on the two semicircular shells and locked with the connecting nuts to achieve the closure of the opening and closing ends of the two semicircular shells. However, this connection method requires the use of tools such as contact wrenches to tighten the connecting nuts of the connecting bolts, and the installation operation is complicated. Therefore, it is necessary to design a transformer with a snap-on connection method to improve the above problems. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the purpose of the present utility model is to provide a current transformer with a snap-on connection method, which aims to solve the technical problem in the existing technology that the current transformer is locked and fixed by connecting bolts, connecting nuts and connecting seats, which requires the use of tools such as contact wrenches and the like, and the installation operation is complicated.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A mutual inductor with a snap connection method includes a semicircular upper shell and a lower shell, the upper shell is rotatably connected to one end of the lower shell, and the other end of the upper shell is connected and fixed by a snap assembly, the snap assembly includes a connecting seat fixedly connected to the outer wall of the opening and closing end of the upper shell, a pressing block is rotatably connected to the connecting seat through a first rotating shaft pin, and a snap is rotatably connected to the middle position of the pressing block through a second rotating shaft pin, the snap assembly also includes a clamping block arranged on the outer wall of the opening and closing end of the lower shell, the snap is provided with a clamping groove for the clamping block to be clamped into, and a locking structure is provided between the pressing block and the upper shell, which is used to lock the position of the pressing block when the snap is clamped with the clamping block.

[0006] Preferably, the bottom end of the clamping block is arranged downwardly and inclined toward the outside of the lower shell body, and the shape of the bottom end inside the clamping groove is adapted to the shape of the bottom end of the clamping block.

[0007] Preferably, a limiting strip is provided at the bottom of the clamping block along the length direction, and a limiting slot for the limiting strip to be inserted into is provided at the bottom end of the inner portion of the clamping slot.

[0008] Preferably, the locking structure includes a pressing rod and two insertion rods, a first accommodating groove is provided at the front end of the pressing block, the pressing rod is movably installed in the first accommodating groove, second accommodating grooves communicating with the first accommodating groove are symmetrically provided on both sides of the pressing block, the two insertion rods are movably installed in the two second accommodating grooves respectively, a ball is embedded in one end of the insertion rod close to the pressing rod, and an avoidance groove for the ball to enter is provided on the outer wall of the pressing rod in the circumferential direction.

[0009] Preferably, a first expansion groove is opened in the first accommodating groove, a first baffle is fixedly connected to the pressing rod, the first baffle is placed in the first expansion groove, a first spring is arranged between the side of the first baffle away from the opening end of the first accommodating groove and the inner wall of the first expansion groove, and the first spring is sleeved on the outer side of the pressing rod.

[0010] Preferably, a second expansion groove is opened in the second accommodating groove, a second baffle is fixedly connected to the insertion rod, the second baffle is placed in the second expansion groove, a second spring is arranged between the side of the second baffle away from the pressing rod and the inner wall of the second expansion groove, and the second spring is sleeved on the outside of the insertion rod.

[0011] Preferably, the locking structure further comprises a pair of fixing plates fixedly connected to the outer wall of the upper shell, the pressing block is placed between the pair of fixing plates, and opposite sides of the pair of fixing plates are provided with insertion holes for inserting the insertion rod.

[0012] Preferably, a circle of sealing grooves is provided on the opening and closing end surfaces of the upper shell and the lower shell, and a sealing ring is embedded in the sealing groove, and the two sealing rings are staggered.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The locking mechanism of the upper and lower sealing grooves of the present invention is simple, and the sealing mechanism of the upper and lower sealing grooves of the present invention is simple and can be easily removed.

[0015] 2. The utility model sets a locking structure sealing groove. When the upper shell sealing groove and the lower shell sealing groove are locked and closed, the locking structure sealing groove fixes the position of the pressing block sealing groove, thereby avoiding the problem that the position of the pressing block sealing groove is offset during the use of the current transformer, which causes the locking failure of the upper shell sealing groove and the lower shell sealing groove and affects the installation of the current transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a transformer with a snap-on connection method;

[0017] Figure 2 This is a schematic diagram of the structure of the transformer with snap-on connection;

[0018] Figure 3 Schematic diagram of the pressing block and buckle structure;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the locking structure of the pressing block;

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure at the connection between the upper shell and the lower shell.

[0021] In the figure: 1. Upper shell; 2. Lower shell; 3. Connecting seat; 4. Pressing block; 401. First accommodating groove; 402. First expansion groove; 403. Second accommodating groove; 404. Second expansion groove; 5. Buckle; 501. Snap-fit ​​groove; 502. Limiting groove; 6. Snap-fit ​​block; 601. Limiting strip; 7. Locking structure; 701. Pressing rod; 7011. Avoiding groove; 702. First stop bar; 703. First spring; 704. Inserting rod; 705. Second stop bar; 706. Second spring; 707. Ball; 8. Fixing plate; 801. Inserting hole; 9. Sealing ring. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Example:

[0024] See also Figure 1-Figure 5The present embodiment provides a mutual inductor with a snap connection method, including a semicircular upper shell 1 and a lower shell 2, the upper shell 1 is rotatably connected to one end of the lower shell 2, and the other end of the upper shell 1 and the lower shell 2 are connected and fixed by a snap assembly, the snap assembly includes a connecting seat 3 fixedly connected to the outer wall of the opening and closing end of the upper shell 1, a pressing block 4 is rotatably connected to the connecting seat 3 through a first rotating shaft pin, and a buckle 5 is rotatably connected to the middle position of the pressing block 4 through a second rotating shaft pin, the buckle assembly also includes a clamping block 6 arranged on the outer wall of the opening and closing end of the lower shell 2, and a clamping groove 501 for the clamping block 6 to be clamped into the buckle 5 is opened on the buckle 5. When in use, the upper shell 1 and the lower shell 2 are rotated closed, and then Then rotate the buckle 5 to put it on the outside of the clamping block 6, so that the clamping block 6 is placed in the clamping groove 501 of the buckle 5, and then press the pressing block 4 in the direction of the upper shell 1. During this process, the pressing block 4 can drive the buckle 5 to move and adjust the position, so that the clamping block 6 is clamped into the clamping groove 501 of the buckle 5, which is used to quickly lock and fix the opening and closing ends of the upper shell 1 and the lower shell 2, which is convenient for the installation of the current transformer. When disassembling, only the pressing block 4 needs to be rotated to the outside of the upper shell 1 to rotate the buckle 5 and disengage it from the clamping block 6, quickly releasing the locking fixation of the opening and closing ends of the upper shell 1 and the lower shell 2, which is convenient for the disassembly of the current transformer. The operation steps are simple and no disassembly tools are required, which improves practicality.

[0025] Furthermore, the bottom end of the clamping block 6 is arranged downwardly and inclined toward the outside of the lower shell body 2, and the shape of the bottom end inside the clamping groove 501 is adapted to the shape of the bottom end of the clamping block 6, so that when the buckle 5 and the clamping block 6 are clamped, the bottom end of the clamping block 6 abuts against the bottom end inside the clamping groove 501, forming a hook effect, thereby improving the clamping effect between the buckle 5 and the clamping block 6.

[0026] Furthermore, if Figure 2 and Figure 3 As shown, a limiting strip 601 is provided at the bottom of the snap-in block 6 along the length direction, and a limiting groove 502 for the limiting strip 601 to be inserted into the bottom end of the snap-in groove 501. When the buckle 5 and the snap-in block 6 are clamped, the limiting strip 601 of the snap-in block 6 is clamped into the limiting groove 502 of the snap-in groove 501, which plays a role of limiting and preventing slipping, and further improves the clamping effect of the buckle 5 and the snap-in block 6.

[0027] In this embodiment, if Figure 2 、 Figure 3 and Figure 4 As shown, a locking structure 7 is provided between the pressing block 4 and the upper shell 1, which is used to lock the position of the pressing block 4 when the buckle 5 is engaged with the clamping block 6. When the upper shell 1 and the lower shell 2 are locked and closed, the position of the pressing block 4 is fixed by the locking structure 7, so as to avoid the position of the pressing block 4 from being offset during the use of the current transformer, thereby causing the locking failure of the upper shell 1 and the lower shell 2 to affect the installation of the current transformer.

[0028] Among them, the locking structure 7 includes a pressing rod 701 and two insertion rods 704. The two insertion rods 704 are on the same axis. The pressing rod 701 and the insertion rod 704 are arranged vertically. A first accommodating groove 401 is provided at the front end of the pressing block 4. The pressing rod 701 is movably installed in the first accommodating groove 401. Second accommodating grooves 403 that communicate with the first accommodating groove 401 are symmetrically provided on both sides of the pressing block 4. The two insertion rods 704 are movably installed in the two second accommodating grooves 403 respectively. A ball 707 is embedded in the end of the insertion rod 704 close to the pressing rod 701, and an avoidance groove 7011 for the ball 707 to enter is provided on the outer wall of the pressing rod 701 in the circumferential direction.

[0029] A first expansion groove 402 is opened in the first accommodating groove 401, and a first stop bar 702 is fixedly connected to the pressing rod 701. The first stop bar 702 is placed in the first expansion groove 402. A first spring 703 is provided between the side of the first stop bar 702 away from the open end of the first accommodating groove 401 and the inner wall of the first expansion groove 402. The first spring 703 is sleeved on the outer side of the pressing rod 701.

[0030] A second expansion groove 404 is opened in the second accommodating groove 403, and a second baffle 705 is fixedly connected to the insertion rod 704. The second baffle 705 is placed in the second expansion groove 404. A second spring 706 is provided between the side of the second baffle 705 away from the pressing rod 701 and the inner wall of the second expansion groove 404. The second spring 706 is sleeved on the outer side of the insertion rod 704.

[0031] The locking structure 7 further includes a pair of fixing plates 8 fixedly connected to the outer wall of the upper shell 1 , the pressing block 4 is placed between the pair of fixing plates 8 , and opposite sides of the pair of fixing plates 8 are each provided with a socket 801 for inserting the insertion rod 704 .

[0032] Based on the above solution, during the process of locking and closing the upper shell 1 and the lower shell 2, the pressing rod 701 is pressed into the first receiving groove 401, and the position of the pressing rod 701 in the first receiving groove 401 is adjusted so that the avoidance groove 7011 of the pressing rod 701 moves to the second receiving groove 403. During this process, the first stop bar 702 squeezes and contracts the first spring 703. At the same time, under the action of the second spring 706, the insertion rod 704 is pushed toward the pressing rod 701, so that the ball 707 enters the avoidance groove 7011. 011, retract the insertion rod 704 into the pressing block 4. When the upper shell 1 and the lower shell 2 are closed and locked, the pressing block 4 rotates to between a pair of fixed plates 8. At this time, release the pressing rod 701, and the first spring 703 pushes the pressing rod 701 to reset. At the same time, the ball 707 disengages from the avoidance groove 7011 and abuts against the side wall of the pressing rod 701, which is used to push the insertion rod 704 to move, so that one end of the insertion rod 704 extends out of the pressing block 4 and is inserted into the socket 801, thereby locking the position of the pressing block 4.

[0033] In this embodiment, a circle of sealing grooves is provided on the opening and closing end faces of the upper shell 1 and the lower shell 2, and a sealing ring 9 is embedded and installed in the sealing groove. The two sealing rings 9 are staggered. When the upper shell 1 and the lower shell 2 are closed and locked, the two sealing rings 9 are used to improve the sealing of the connection. Among them, one end of the sealing ring 9 extends out of the sealing groove and the end face is provided with a double waterproof line. The double waterproof line has a double waterproof effect, further improving the sealing performance. Limiting convex rings are provided on the inner and outer walls of the sealing ring 9, and limiting grooves for the limiting convex rings to be inserted are provided on the inner walls on both sides of the sealing groove, which are used to fix the sealing ring 9 firmly in the sealing groove, prevent the sealing ring 9 from detaching from the sealing groove, avoid water invasion, ensure the stable operation of the current transformer, and improve the service life.

[0034] Working principle: When installing the current transformer, the upper shell 1 and the lower shell 2 are sleeved on the outside of the cable, so that the opening and closing ends of the upper shell 1 and the lower shell 2 are closed, and then the buckle 5 is rotated and sleeved on the outside of the clamping block 6, so that the clamping block 6 is placed in the clamping groove 501 of the buckle 5, and then the pressing rod 701 is pressed into the first receiving groove 401, and the position of the pressing rod 701 in the first receiving groove 401 is adjusted so that the avoidance groove 7011 of the pressing rod 701 moves to the second receiving groove 403, and then the second receiving groove 403 is opened. Under the action of spring 706, the insertion rod 704 is pushed toward the pressing rod 701, so that the ball 707 enters the avoidance groove 7011, and the insertion rod 704 is retracted into the pressing block 4. Then, the pressing block 4 is pressed toward the upper shell 1. In this process, the pressing block 4 can drive the buckle 5 to move and adjust its position, so that the clamping block 6 is clamped into the clamping groove 501 of the buckle 5, which is used to quickly lock and fix the opening and closing ends of the upper shell 1 and the lower shell 2. The bottom end of the clamping block 6 abuts against the bottom end of the inner side of the clamping groove 501. The locking cam 706 is locked and the locking cam 707 is unlocked, and the locking cam 706 is unlocked, and the locking cam 706 is unlocked, and the locking cam 706 is unlocked. The position of the pressing block 4 is locked in the hole 801. When disassembling the current transformer, you only need to press the pressing rod 701 again to disengage the insertion rod 704 from the socket 801 of the fixing plate 8, thereby releasing the locking effect on the pressing block 4. By rotating the pressing block 4 toward the outside of the upper shell 1, the buckle 5 can be rotated and disengaged from the clamping block 6, quickly releasing the locking fixation of the opening and closing ends of the upper shell 1 and the lower shell 2, thereby facilitating the disassembly of the current transformer. The operation steps are simple and no disassembly tools are required, thereby improving practicality.

[0035] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A buckle connection type mutual inductor, comprising a semicircular upper shell (1) and a lower shell (2), characterized in that: The upper shell (1) is rotatably connected to one end of the lower shell (2), and the other end of the upper shell (1) and the lower shell (2) are connected and fixed by a buckle assembly. The buckle assembly includes a connecting seat (3) fixedly connected to the outer wall of the opening and closing end of the upper shell (1), a pressing block (4) is rotatably connected to the connecting seat (3) through a first rotating shaft pin, and a buckle (5) is rotatably connected to the middle position of the pressing block (4) through a second rotating shaft pin. The buckle assembly also includes a clamping block (6) arranged on the outer wall of the opening and closing end of the lower shell (2), and a clamping groove (501) for the clamping block (6) to be clamped is provided on the buckle (5). A locking structure (7) is provided between the pressing block (4) and the upper shell (1) for locking the position of the pressing block (4) when the buckle (5) is clamped to the clamping block (6).

2. The buckle connection transformer according to claim 1, characterized in that: The bottom end of the clamping block (6) is arranged downwardly and tilted toward the outside of the lower housing (2), and the shape of the bottom end inside the clamping groove (501) is adapted to the shape of the bottom end of the clamping block (6).

3. The buckle connection mutual inductor according to claim 2, characterized in that: A limiting strip (601) is provided at the bottom of the clamping block (6) along the length direction, and a limiting slot (502) for the limiting strip (601) to be clamped into is provided at the bottom end of the inner portion of the clamping slot (501).

4. The buckle connection transformer according to claim 1, characterized in that: The locking structure (7) includes a pressing rod (701) and two inserting rods (704), a first receiving groove (401) is provided at the front end of the pressing block (4), the pressing rod (701) is movably installed in the first receiving groove (401), and second receiving grooves (403) communicating with the first receiving groove (401) are symmetrically provided on both sides of the pressing block (4), the two inserting rods (704) are movably installed in the two second receiving grooves (403), and a ball (707) is embedded and installed at one end of the inserting rod (704) close to the pressing rod (701), and an avoidance groove (7011) for the ball (707) to enter is provided on the outer wall of the pressing rod (701) along the circumferential direction.

5. The buckle connection mutual inductor according to claim 4, characterized in that: A first expansion groove (402) is provided in the first receiving groove (401), a first stop bar (702) is fixedly connected to the pressing rod (701), the first stop bar (702) is placed in the first expansion groove (402), a first spring (703) is provided between the side of the first stop bar (702) away from the opening end of the first receiving groove (401) and the inner wall of the first expansion groove (402), and the first spring (703) is sleeved on the outer side of the pressing rod (701).

6. The buckle connection mutual inductor according to claim 4, characterized in that: A second expansion groove (404) is provided in the second receiving groove (403), a second stop bar (705) is fixedly connected to the insertion rod (704), the second stop bar (705) is placed in the second expansion groove (404), a second spring (706) is provided between the side of the second stop bar (705) away from the pressing rod (701) and the inner wall of the second expansion groove (404), and the second spring (706) is sleeved on the outer side of the insertion rod (704).

7. The buckle connection transformer according to claim 4, characterized in that: The locking structure (7) further comprises a pair of fixing plates (8) fixedly connected to the outer wall of the upper shell (1), the pressing block (4) being placed between the pair of fixing plates (8), and a socket (801) for inserting the insertion rod (704) is provided on opposite sides of the pair of fixing plates (8).

8. The buckle connection mutual inductor according to claim 1, characterized in that: A circle of sealing grooves is provided on the opening and closing end surfaces of the upper shell (1) and the lower shell (2), and a sealing ring (9) is embedded and installed in the sealing groove, and the two sealing rings (9) are staggered.

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