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CN-224203913-U - Shell structure of current transformer

CN224203913UCN 224203913 UCN224203913 UCN 224203913UCN-224203913-U

Abstract

The utility model provides a shell structure of a current transformer, which comprises a base and a cover plate, wherein one side of the base is provided with a mounting support plate fixed with a metal plate, the depth of the cover plate is smaller than that of the base, a mounting groove for mounting a terminal is formed in the cover plate, the terminal is connected with a coil lead, the cover plate is shallow in depth, an operation space is wide, the terminal and a coil can be mounted on the wide cover plate during assembly, so that the operation is more convenient, the coil and the terminal can be fixed on the cover plate after the cover plate is filled with glue, and then assembled with the base after the glue is solidified.

Inventors

  • JIN ZHIFENG
  • WANG ZHINENG
  • MOU YUFENG

Assignees

  • 德力西集团有限公司

Dates

Publication Date
20260505
Application Date
20260407

Claims (7)

  1. 1. The utility model provides a shell structure of current transformer, its characterized in that, includes base (1) and apron (2), one side of base (1) is equipped with and installs extension board (6) fixed with the panel beating, the degree of depth of apron (2) is less than the degree of depth of base (1), the shaping has mounting groove (23) that are used for installing terminal (22) on apron (2), terminal (22) are used for linking to each other with the coil lead wire, the coil install in after on apron (2), through the encapsulating with apron (2) are fixed, base (1) with the middle part of apron (2) is equipped with respectively and is connected and be hollow first projection (3) and second projection (4) to inserting, the shaping has annular step (24) on the inner wall of first projection (3), the shaping on second projection (4) with second lug (25) that annular step (24) offset.
  2. 2. The housing structure of a current transformer according to claim 1, wherein the base (1) comprises a bottom plate (5), and a mounting support plate (6) and two opposite side plates (7) which are vertically arranged on the bottom plate (5), one side of each side plate (7) is the mounting support plate (6), the other side forms a first opening (8), a guiding structure for inserting the first convex column (3) and the second convex column (4) is arranged between the cover plate (2) and the base (1), and the guiding structure comprises: The guide ribs (9) are formed on the inner walls of the two side plates (7) adjacent to the first openings (8), and the extending direction of the guide ribs (9) is perpendicular to the bottom plate (5); The baffle (10) is arranged on one side of the cover plate (2) and extends towards the direction of the bottom plate (5), the baffle (10) is inserted into the first opening (8) in a sliding manner along the guide convex ribs (9), and the baffle (10) and the two side plates (7) and the mounting support plate (6) are enclosed to form a containing cavity (11) for placing coils.
  3. 3. The housing structure of a current transformer according to claim 2, characterized in that the two sides of the baffle plate (10) are provided with a convex edge (12), the convex edge (12) being slidably abutted against a first end surface (13) corresponding to the side plate (7).
  4. 4. A housing structure of a current transformer according to claim 2 or 3, characterized in that the bottom plate (5) is formed with a first slot (14) into which the end of the baffle plate (10) remote from the cover plate (2) is inserted.
  5. 5. The housing structure of a current transformer according to claim 4, characterized in that a reinforcing rib (21) is arranged between the baffle plate (10) and the bottom plate (5).
  6. 6. The housing structure of a current transformer according to claim 1, characterized in that a protective cover (26) for shielding the terminal (22) is detachably mounted on an outer wall of the cover plate (2).
  7. 7. The shell structure of the current transformer according to claim 6, wherein the protective cover (26) is fixed with the cover plate (2) through a screw (27), and a first perforation (28) and a second perforation (29) for lead sealing wires to penetrate are formed on the screw (27) and the protective cover (26) respectively.

Description

Shell structure of current transformer Technical Field The utility model relates to the technical field of transformers, in particular to a shell structure of a current transformer. Background The through type current transformer is generally composed of a base and a cover plate which are buckled with each other, an installation support plate used for being fixed with a metal plate is integrally formed on one side of the base, the contact area with the metal plate is increased by adopting a wide installation support plate in consideration of installation firmness and structural stability of the transformer, the depth of the base formed by integral injection molding with the installation support plate is deepened accordingly, a special groove for installing two terminals of a coil is formed in the bottom of the base, after the coil is placed into the base, a worker needs to manually and accurately press the two terminals into a bottom installation groove in a narrow space, the operation space is limited, the terminal installation is difficult and easy to be in place, and the assembly quality and the production efficiency of a product are affected. Disclosure of utility model Therefore, the technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a shell structure of the current transformer with convenient installation. The utility model provides a shell structure of a current transformer, which comprises a base and a cover plate, wherein one side of the base is provided with an installation support plate fixed with a metal plate, the depth of the cover plate is smaller than that of the base, an installation groove for installing a terminal is formed in the cover plate, the terminal is used for being connected with a coil lead, the coil is fixed with the cover plate through glue filling after being installed on the cover plate, the middle parts of the base and the cover plate are respectively provided with a first convex column and a second convex column which are connected in an opposite-inserting way and are hollow, an annular step is formed in the inner wall of the first convex column, and a second convex block which is propped against the annular step is formed in the second convex column. The base comprises a bottom plate, an installation support plate and two oppositely arranged side plates, wherein the installation support plate and the two oppositely arranged side plates are vertically arranged on the bottom plate, a first opening is formed in one side of each side plate, a guide structure for inserting the first convex column and the second convex column is arranged between the cover plate and the base, the guide structure comprises guide convex ribs, the guide convex ribs are formed on the inner walls, adjacent to the first opening, of the two side plates, the extending directions of the guide convex ribs are perpendicular to the bottom plate, a baffle is arranged on one side of the cover plate and extends towards the direction of the bottom plate, the baffle is inserted into the first opening in a sliding mode along the guide convex ribs, and the baffle, the two side plates and the installation support plate are enclosed to form a containing cavity for placing coils. The baffle plate is characterized in that convex edges are arranged on two sides of the baffle plate and can slide against the first end face of the corresponding side plate. The bottom plate is provided with a first slot for inserting the end part of the baffle far away from the cover plate. And reinforcing ribs are arranged between the baffle plate and the bottom plate. And the outer wall of the cover plate is detachably provided with a protective cover for shielding the terminal. The protection cover is fixed with the cover plate through a screw, and a first perforation and a second perforation for the lead sealing wire to penetrate are formed on the screw and the protection cover respectively. The technical scheme of the utility model has the following advantages: 1. According to the shell structure of the current transformer, the mounting groove for mounting the terminal is formed in the cover plate, the cover plate is shallow in depth, the operation space is wide, the terminal and the coil can be mounted on the cover plate which is wide in operation during assembly, the operation is more convenient, the coil and the terminal can be fixed on the cover plate after glue is filled in the cover plate and then assembled with the base after glue is solidified, in addition, the first convex column and the second convex column which are connected in an opposite-plug mode and are hollow are respectively arranged in the middle of the base and the cover plate, annular steps are formed on the inner wall of the first convex column, the second convex column is formed on the second convex column and is propped against the annular steps, axial limiting of the two pairs of the cover plate a