Opening and closing type mutual inductor easy to assemble

Abstract

The open-close type mutual inductor easy to assemble comprises a first left shell, a first right shell, a second left shell and a second right shell, the first left shell and the first right shell are spliced in a left-right sealing mode to form an upper shell module, and the second left shell and the second right shell are spliced in a left-right sealing mode to form a lower shell module. One end of the upper shell module is rotationally connected with one end of the lower shell module, the other end of the upper shell module and the other end of the lower shell module are clamped and fixed to achieve up-down opposite splicing, U-shaped grooves used for being matched with the side wall of a wire are formed in the splicing faces of the upper shell module and the lower shell module respectively, an upper U-shaped iron core is installed in the upper shell module, and a lower U-shaped iron core is installed in the lower shell module. A lower U-shaped iron core is mounted in the lower shell module; when the upper shell module and the lower shell module are oppositely spliced up and down, the upper U-shaped iron core and the lower U-shaped iron core are configured to be sealed through ultrasonic welding so as to be connected to form a closed loop. According to the open-close type mutual inductor, the assembling process is simpler, more convenient and faster, and the assembling efficiency and safety are improved.

Description

Technical Field

[0001] This utility model relates to the field of openable current transformer technology, and specifically to an easy-to-assemble openable current transformer. Background Technology

[0002] Existing switchable current transformers have problems such as complex structure, cumbersome and time-consuming assembly process, and poor sealing and insulation, which easily lead to leakage risks and affect assembly efficiency and safety. Utility Model Content

[0003] The present invention aims to provide an easy-to-assemble openable current transformer to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: an easy-to-assemble openable current transformer, comprising a first left shell, a first right shell, a second left shell, and a second right shell. The first left shell and the first right shell are sealed together to form an upper shell module, and the second left shell and the second right shell are sealed together to form a lower shell module. One end of the upper shell module is rotatably connected to one end of the lower shell module, and the other end of the upper shell module is snapped and fixed to the other end of the lower shell module to achieve relative assembly. U-shaped grooves for fitting the sidewalls of conductors are respectively provided on the assembly surfaces of the upper shell module and the lower shell module. An upper U-shaped iron core is installed in the upper shell module, and a lower U-shaped iron core is installed in the lower shell module. When the upper shell module and the lower shell module are assembled relative to each other, the upper U-shaped iron core and the lower U-shaped iron core are configured to be sealed by ultrasonic welding to form a closed loop.

[0005] Preferably, the first left housing and the first right housing, as well as the second left housing and the second right housing, are all symmetrical structures. The first left housing and the first right housing are configured to be sealed together by ultrasonic welding, and the second left housing and the second right housing are configured to be sealed together by ultrasonic welding.

[0006] Preferably, the bottom surfaces of the first left shell and the first right shell are joined together to form the joining surface of the upper shell module, and the top surfaces of the second left shell and the second right shell are joined together to form the joining surface of the lower shell module.

[0007] Preferably, the two ends of the upper U-shaped iron core extend downward through the splicing surface of the upper shell module to form upper iron core welding parts, which are located on opposite sides of the U-shaped groove of the upper shell module; the two ends of the lower U-shaped iron core extend upward through the splicing surface of the lower shell module to form lower iron core welding parts, which are located on opposite sides of the U-shaped groove of the lower shell module; when the upper shell module and the lower shell module are spliced ​​together, the upper iron core welding parts and the lower iron core welding parts correspond one-to-one and are sealed together by ultrasonic welding.

[0008] Preferably, a surrounding wall is formed on the splicing surface of the upper shell module corresponding to the outer periphery of the upper iron core welding part, and a first receiving groove is formed inside the surrounding wall. The opening of the first receiving groove is higher than the extended end of the upper iron core welding part. A second receiving groove is formed on the splicing surface of the lower shell module corresponding to the outer periphery of the lower iron core welding part. When the upper shell module and the lower shell module are spliced ​​together, the two lower iron core welding parts will be respectively accommodated in the two first receiving grooves to contact the upper iron core welding part.

[0009] Preferably, when the upper shell module and the lower shell module are assembled opposite each other, and the bottom surface of the upper iron core welding part is in contact with the top surface of the lower iron core welding part, there is a gap between the assembly surfaces of the upper shell module and the lower shell module.

[0010] Preferably, the volume of the second receiving tank is greater than the volume of the first receiving tank.

[0011] Preferably, the cross-sectional dimensions and depth of the second receiving groove are greater than those of the first receiving groove.

[0012] Preferably, the lower shell module has a protrusion on its side, and the upper shell module has a buckle on its side that corresponds to and engages with the protrusion of the lower shell module.

[0013] Preferably, the upper shell module and the lower shell module are an integrated structure.

[0014] This utility model has the following beneficial effects:

[0015] This utility model discloses a retractable current transformer. The upper shell module is formed by sealing and assembling a first left shell and a first right shell, and the lower shell module is formed by sealing and assembling a second left shell and a second right shell. This allows internal components such as the upper U-shaped iron core and the lower U-shaped iron core to be quickly and conveniently installed into the upper and lower shell modules. Then, one end of the upper shell module is rotatably connected to one end of the lower shell module. The lead wire is then placed into the U-shaped groove between the mating surfaces of the upper and lower shell modules. The other end of the upper shell module is snapped and fixed to the other end of the lower shell module to achieve relative assembly. Finally, the upper U-shaped iron core and the lower U-shaped iron core are sealed by ultrasonic welding to form a closed loop, thus realizing the assembly process of the retractable current transformer. This assembly process is simpler and faster, with a simpler structure, better sealing and insulation, and improved assembly efficiency and safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the openable current transformer in the open state according to an embodiment of the present invention.

[0017] Figure 2 This is a side view of the openable current transformer in the assembled state according to an embodiment of the present invention.

[0018] Figure 3 This is a perspective view of the openable current transformer in the assembled state according to an embodiment of the present invention.

[0019] Figure 4 This is a top view of the openable current transformer in the assembled state according to an embodiment of the present invention.

[0020] Figure 5 yes Figure 4 Sectional view at point AA.

[0021] Figure 6 yes Figure 4 Sectional view at point BB.

[0022] Figure labels: 1 Upper shell module, 11 First left shell, 12 First right shell, 2 Lower shell module, 21 Second left shell, 22 Second right shell, 3 Upper U-shaped iron core, 31 Upper iron core welding part, 4 Lower U-shaped iron core, 41 Lower iron core welding part, 5 Enclosure, 6 First receiving groove, 7 Second receiving groove, 8 Protrusion, 9 Buckle. Detailed Implementation

[0023] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] See Figure 1-6 As shown in the figure, as an embodiment of the present invention, an easy-to-assemble open-type current transformer is provided. The open-type current transformer specifically includes a first left housing 11, a first right housing 12, a second left housing 21, and a second right housing 22. The first left housing 11 and the first right housing 12 are sealed together to form an upper housing module 1, and the second left housing 21 and the second right housing 22 are sealed together to form a lower housing module 2. One end of the upper housing module 1 is rotatably connected to one end of the lower housing module 2, and the other end of the upper housing module 1 is snapped and fixed to the other end of the lower housing module 2 to achieve relative assembly. U-shaped grooves for fitting the sidewalls of conductors are respectively opened on the assembly surfaces of the upper housing module 1 and the lower housing module 2. An upper U-shaped iron core 3 is installed in the upper housing module 1, and a lower U-shaped iron core 4 is installed in the lower housing module 2. When the upper housing module 1 and the lower housing module 2 are assembled relative to each other, the upper U-shaped iron core 3 and the lower U-shaped iron core 4 are configured to be sealed by ultrasonic welding to form a closed loop.

[0027] In assembling the openable current transformer of this utility model, the internal components such as the upper U-shaped iron core 3 and the lower U-shaped iron core 4 are first installed. Then, the first left housing 11 and the first right housing 12 are sealed together to form the upper housing module 1, and the second left housing 21 and the second right housing 22 are sealed together to form the lower housing module 2. The internal components such as the upper U-shaped iron core 3 and the lower U-shaped iron core 4 are then installed into the upper housing module 1 and the lower housing module 2 respectively. Next, one end of the upper housing module 1 is rotatably connected to one end of the lower housing module 2. Then, the lead wire is placed into the U-shaped groove between the mating surfaces of the upper housing module 1 and the lower housing module 2. The other end of the upper housing module 1 is connected to the lower housing module 2. The other end is snapped in place to achieve relative assembly of the upper and lower parts. The upper U-shaped iron core 3 and the lower U-shaped iron core 4 are finally sealed by ultrasonic welding to form a closed loop, thus realizing the assembly process of the open-type current transformer. Since the upper shell module 1 is formed by sealing and assembling the first left shell 11 and the first right shell 12 from left to right, and the lower shell module 2 is formed by sealing and assembling the second left shell 21 and the second right shell 22 from left to right, the internal components such as the upper U-shaped iron core 3 and the lower U-shaped iron core 4 can be quickly and conveniently installed into the upper shell module 1 and the lower shell module 2. The assembly process is simpler and faster, and the structure is simpler, with better sealing and insulation, which improves assembly efficiency and safety.

[0028] In this embodiment, the first left shell 11 and the first right shell 12, and the second left shell 21 and the second right shell 22 are all symmetrical structures, which makes the assembly more stable. The first left shell 11 and the first right shell 12 are configured to achieve left-right sealing by ultrasonic welding, and the second left shell 21 and the second right shell 22 are configured to achieve left-right sealing by ultrasonic welding. This allows the components inside the upper shell module 1 and the lower shell module 2 to be isolated from the outside world, and further improves the sealing and insulation of the assembly, resulting in higher safety.

[0029] In this embodiment, the bottom surfaces of the first left shell 11 and the first right shell 12 are joined together to form the joining surface of the upper shell module 1, and the top surfaces of the second left shell 21 and the second right shell 22 are joined together to form the joining surface of the lower shell module 2. The two ends of the upper U-shaped iron core 3 extend downward through the splicing surface of the upper shell module 1 to form the upper iron core welding part 31, which is located on opposite sides of the U-shaped groove of the upper shell module 1. The two ends of the lower U-shaped iron core 4 extend upward through the splicing surface of the lower shell module 2 to form the lower iron core welding part 41, which is located on opposite sides of the U-shaped groove of the lower shell module 2. When the upper shell module 1 and the lower shell module 2 are spliced ​​together, the upper iron core welding part 31 and the lower iron core welding part 41 are connected in a one-to-one correspondence by ultrasonic welding to achieve a sealed connection. By directly using the U-shaped iron core as the welding part for ultrasonic welding, the upper shell module 1 and the lower shell module 2 can not only ensure the performance of the openable current transformer of this utility model when they are spliced ​​together, but also save welding materials and reduce production costs.

[0030] In this embodiment, a surrounding wall 5 is formed on the splicing surface of the upper shell module 1, corresponding to the outer periphery of the upper iron core welding part 31. A first receiving groove 6 is formed inside the surrounding wall 5, and the opening of the first receiving groove 6 is higher than the extended end of the upper iron core welding part 31. A second receiving groove 7 is formed on the splicing surface of the lower shell module 2, corresponding to the outer periphery of the lower iron core welding part 41. When the upper shell module 1 and the lower shell module 2 are spliced ​​together, the two lower iron core welding parts 41 will be respectively accommodated in the two first receiving grooves 6 to contact the upper iron core welding part 31. In this way, the upper iron core welding part 31 and the lower iron core welding part 41 are in contact. During ultrasonic welding, the molten solder first accumulates in the first receiving tank 6. When the amount of solder exceeds the volume of the first receiving tank 6, it overflows into the second receiving tank 7. This results in the solder accumulating mainly near the welding positions of the upper iron core welding part 31 and the lower iron core welding part 41, allowing the upper shell module 1 and the lower shell module 2 to be more tightly joined and fixed together. Of course, those skilled in the art should understand that in other embodiments, the positions of the first receiving tank 6 and the second receiving tank 7 can be interchanged, and are not limited to the specific implementation method disclosed in this embodiment.

[0031] In this embodiment, when the upper shell module 1 and the lower shell module 2 are assembled relative to each other, and the bottom surface of the upper iron core welding part 31 is in contact with the top surface of the lower iron core welding part 41, there is a gap between the assembly surface of the upper shell module 1 and the assembly surface of the lower shell module 2, so as to prevent the upper shell module 1 and the lower shell module 2 from being damaged by ultrasonic welding when welding the upper iron core welding part 31 and the lower iron core welding part 41. It is understood that in this embodiment, when the upper shell module 1 and the lower shell module 2 are assembled, there is a gap between the mating surfaces of the upper shell module 1 and the lower shell module 2. Then, ultrasonic welding is used to melt the bottom surface of the upper iron core welding part 31 and the top surface of the lower iron core welding part 41 to achieve a tight connection. During the melting process, the gap between the mating surfaces of the upper shell module 1 and the lower shell module 2 continuously decreases. When the mating surfaces of the upper shell module 1 and the lower shell module 2 are just touching, the ultrasonic welding is stopped. In this way, the openable current transformer of this utility model not only achieves good sealing and insulation effects, but also prevents damage to the upper shell module 1 and the lower shell module 2 during welding.

[0032] In this embodiment, the volume of the second receiving groove 7 is greater than that of the first receiving groove 6. Specifically, the cross-sectional dimensions and depth of the second receiving groove 7 are greater than those of the first receiving groove 6, respectively. This allows the molten solder between the bottom surface of the upper iron core welding part 31 and the top surface of the lower iron core welding part 41 to first accumulate in the smaller first receiving groove 6 and then overflow outward into the larger second receiving groove 7. This ensures that the solder can be more concentrated at the welding position of the upper iron core welding part 31 and the lower iron core welding part 41, thus ensuring the welding sealing and stability.

[0033] In this embodiment, the lower shell module 2 has a protrusion 8 on its side and the upper shell module 1 has a buckle 9 on its side that corresponds to the protrusion 8 of the lower shell module 2. The lower shell module 2 and the upper shell module 1 are fixed by the corresponding engagement of the protrusion 8 and the buckle 9.

[0034] In this embodiment, the upper shell module 1 and the lower shell module 2 are an integral structure. However, those skilled in the art should understand that in other embodiments, the upper shell module 1 and the lower shell module 2 may also be other structures, and are not limited to the specific implementation methods disclosed in this embodiment.

[0035] The installation process of this utility model is as follows:

[0036] When it is necessary to measure the current of the conductor, the conductor must first be clamped into the U-shaped groove of the lower shell module 2. Then, the upper shell module 1 and the lower shell module 2 are rotated relative to each other to achieve the upper and lower assembly. The buckle 9 on the upper shell module 1 is clamped into the protrusion 8 on the lower shell module 2. Finally, the first iron core welding part and the second iron core are tightly welded together by ultrasonic welding. When the splicing surfaces of the upper shell module 1 and the lower shell module 2 are just touching, the ultrasonic welding is stopped immediately, which achieves a tight connection between the upper shell module 1 and the lower shell module 2, thereby making the open-type current transformer have better sealing and insulation.

[0037] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. An easy-to-assemble openable current transformer, characterized in that: The system includes a first left shell, a first right shell, a second left shell, and a second right shell. The first left shell and the first right shell are sealed together to form an upper shell module. The second left shell and the second right shell are sealed together to form a lower shell module. One end of the upper shell module is rotatably connected to one end of the lower shell module, and the other end of the upper shell module is snapped and fixed to the other end of the lower shell module to achieve relative assembly. U-shaped grooves for fitting the sidewalls of the conductors are respectively opened on the assembly surfaces of the upper shell module and the lower shell module. An upper U-shaped iron core is installed in the upper shell module, and a lower U-shaped iron core is installed in the lower shell module. When the upper shell module and the lower shell module are assembled relative to each other, the upper U-shaped iron core and the lower U-shaped iron core are configured to be sealed by ultrasonic welding to form a closed loop.

2. The easily assembled openable current transformer according to claim 1, characterized in that: The first left housing and the first right housing, as well as the second left housing and the second right housing, are all symmetrical structures. The first left housing and the first right housing are configured to be sealed together by ultrasonic welding, and the second left housing and the second right housing are configured to be sealed together by ultrasonic welding.

3. The easily assembled openable current transformer according to claim 1, characterized in that: The bottom surfaces of the first left shell and the first right shell are joined together to form the joining surface of the upper shell module, and the top surfaces of the second left shell and the second right shell are joined together to form the joining surface of the lower shell module.

4. The easily assembled openable current transformer according to claim 1, characterized in that: The two ends of the upper U-shaped iron core extend downward through the splicing surface of the upper shell module to form the upper iron core welding part, which is located on opposite sides of the U-shaped groove of the upper shell module; the two ends of the lower U-shaped iron core extend upward through the splicing surface of the lower shell module to form the lower iron core welding part, which is located on opposite sides of the U-shaped groove of the lower shell module; when the upper shell module and the lower shell module are spliced ​​together, the upper iron core welding part and the lower iron core welding part correspond one-to-one and are sealed together by ultrasonic welding.

5. The easily assembled openable current transformer according to claim 4, characterized in that: On the mating surface of the upper shell module, a wall protrudes outward from the outer periphery of the upper iron core welding part, and a first receiving groove is formed inside the wall. The opening of the first receiving groove is higher than the extended end of the upper iron core welding part. On the mating surface of the lower shell module, a second receiving groove is recessed inward from the outer periphery of the lower iron core welding part. When the upper shell module and the lower shell module are mated together, the two lower iron core welding parts will be respectively accommodated in the two first receiving grooves to contact the upper iron core welding part.

6. The easily assembled openable current transformer according to claim 5, characterized in that: When the upper shell module and the lower shell module are assembled side by side, and the bottom surface of the upper iron core welding part contacts the top surface of the lower iron core welding part, there is a gap between the assembly surfaces of the upper shell module and the lower shell module.

7. The easily assembled openable current transformer according to claim 6, characterized in that: The volume of the second container is greater than the volume of the first container.

8. The easily assembled openable current transformer according to claim 7, characterized in that: The cross-sectional dimensions and depth of the second receiving tank are larger than those of the first receiving tank.

9. The easily assembled openable current transformer according to claim 1, characterized in that: The lower shell module has a protrusion on its side, and the upper shell module has a buckle on its side that corresponds to and engages with the protrusion of the lower shell module.

10. The easily assembled openable current transformer according to any one of claims 1-9, characterized in that: The upper shell module and the lower shell module are integrated into one unit.

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