High-precision mutual inductor iron core

Abstract

The high-precision mutual inductor iron core comprises a first inner core body and a second inner core body, clamping grooves are formed in the outer surfaces of the first inner core body and the second inner core body and located at the same position, a first outer core body and a second outer core body are inserted into the two clamping grooves, and the two ends of the first outer core body and the two ends of the second outer core body are fixedly arranged. Positioning grooves are formed in the two ends of the first inner core, positioning blocks are fixedly connected to the two ends of the second inner core, and the outer surfaces of the two positioning blocks are connected with the interiors of the two positioning grooves in an inserted mode respectively. According to the utility model, the first inner core and the second inner core are spliced and positioned through the positioning block and the positioning groove, then the first outer core and the second outer core are inserted into the clamping groove, and the two butt joints are respectively inserted into the butt joint grooves for splicing, so that the rapid assembly of the iron core is realized, and the assembly efficiency is improved; and the production efficiency of the iron core is indirectly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of iron core, concretely to a high accuracy mutual -inductor iron core. BACKGROUND

[0002] The mutual -inductor is the collective name of current transformer and voltage transformer, can become low voltage from high voltage, big current from small current, is used for measurement or protection system, and the mutual -inductor iron core is an important component of mutual -inductor, and the performance of mutual -inductor is directly influenced by the pros and cons, is mainly used for the generation and conversion of magnetic field, and can prevent the coil from being damaged due to excessive current during operation.

[0003] In the prior art, such as Chinese patent CN213958737U discloses "a high-precision current transformer iron core", including the inner core body, the inner core body includes first inner core part and second inner core part, the first inner core part and the second inner core part upper end are provided with fastening bolt, the inner core body upper and lower end are fixedly provided with outer shell, two outer shells are fixedly provided with connecting shell between two outer shells, the inner core body outer end is provided with outer core body, the outer core body includes the outer core part of both sides and connecting part, the connecting part is fixedly arranged between the front and rear ends of two outer core parts, the front and rear ends of two outer core parts are provided with connecting groove, the first connecting hole is arranged on the upper end of the connecting groove, the connecting part both sides are fixedly provided with connecting piece, the second connecting hole is arranged on the upper end surface of the connecting piece.

[0004] Although the above-mentioned utility model produces by dividing the iron core into multiple modules, and then assembles, the production efficiency of the mutual -inductor iron core is improved, but the outer core part and the connecting part need to be assembled by bolt after being butted on the core body in the assembling process, and the first inner core part and the second inner core part are prone to shaking in the assembling process, which makes the assembling inconvenient and the assembling efficiency low. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a high-precision mutual -inductor iron core to solve the problems in the above background technology.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a high-precision mutual -inductor iron core, including one inner core and two inner cores, the outer surface of the one inner core and the two inner cores is provided with a clamping groove at the same position, a one outer core and a two outer core are inserted in the two clamping grooves, the one outer core and the two outer core are fixedly arranged at both ends, the one inner core is provided with a positioning groove at both ends, the two inner cores are fixedly connected with a positioning block at both ends, and the outer surface of the two positioning blocks is respectively inserted with the two positioning grooves.

[0007] As a further preferred of the technical solution, the top and bottom ends of the first and second inner cores are provided with outer shells, and a butt joint shell is fixedly connected between the two outer shells, and the inner surface of the butt joint shell is tightly attached to the outer surfaces of the first and second inner cores.

[0008] As a further preferred of the technical solution, the two ends of the first outer core are provided with butt joint grooves, and the two ends of the second outer core are fixedly connected with butt joints, and one end of each of the two butt joints is inserted into the inside of the two butt joint grooves.

[0009] As a further preferred of the technical solution, the outer surface of the first outer core is provided with a first butt joint through hole near the two ends, and the top end of each of the two butt joints is provided with a second butt joint through hole at the position of the first butt joint through hole.

[0010] As a further preferred of the technical solution, the top end of the first and second inner cores is provided with a threaded through hole at the position of the first butt joint through hole, and the inside of each of the two threaded through holes is threadedly connected with a fixing bolt, and the bottom end of each of the two fixing bolts is inserted into the inside of the first and second butt joint through holes.

[0011] The utility model provides a high accuracy mutual -inductor core, has the following beneficial effects:

[0012] The utility model discloses through the positioning block and the positioning slot splice positioning between the first and second inner cores, then inserts the first and second outer cores into the clamping groove and makes two butt joints respectively insert into the butt joint groove and splice, realizes the quick assembly to the iron core, has improved the efficiency of assembly, and indirectly has improved the production efficiency of the iron core. ACCURACY

[0013] Figure 1 It is the overall structure of the utility model's schematic diagram;

[0014] Figure 2 It is the exploded schematic diagram of the overall structure of the utility model;

[0015] Figure 3 It is the exploded schematic diagram of the structure between the first and second inner cores of the utility model.

[0016] In the drawing: 1, the first inner core;2, the second inner core;3, the clamping groove;4, the first outer core;5, the second outer core;6, the butt joint;7, the butt joint groove;8, the threaded through hole;9, the first butt joint through hole;10, the second butt joint through hole;11, the positioning block;12, the positioning slot;13, the outer shell;14, the butt joint shell;15, the fixing bolt. CONCRETE IMPLEMENTATION

[0017] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0018] The utility model provides technical scheme: as Figures 1-3 As shown in the figure, in the embodiment, a high-precision mutual inductor core includes a first inner core 1 and a second inner core 2, a clamping groove 3 is formed on the outer surface of the first inner core 1 and the second inner core 2 at the same position, a first outer core 4 and a second outer core 5 are inserted into the two clamping grooves 3, the first outer core 4 and the second outer core 5 are fixedly arranged at both ends, a positioning groove 12 is formed at both ends of the first inner core 1, a positioning block 11 is fixedly connected to both ends of the second inner core 2, the outer surfaces of the two positioning blocks 11 are respectively inserted into the two positioning grooves 12, wherein, by arranging the clamping groove 3, the first outer core 4 and the second outer core 5 can be accommodated, the occupied space is reduced, by arranging the positioning groove 12 and the positioning block 11, the first inner core 1 and the second inner core 2 can be quickly assembled.

[0019] As shown in the figure, Figure 1 And Figure 2 As shown in the figure, the top end and the bottom end of the first inner core 1 and the second inner core 2 are provided with an outer clamping shell 13, the two outer clamping shells 13 are fixedly connected with a butt joint clamping shell 14, the inner surface of the butt joint clamping shell 14 is tightly attached to the outer surface of the first inner core 1 and the second inner core 2, by arranging the outer clamping shell 13 and the butt joint clamping shell 13, the core can be protected.

[0020] As shown in the figure, Figure 3 The two ends of the first outer core 4 are provided with a butt joint groove 7, the two ends of the second outer core 5 are fixedly connected with a butt joint 6, one end of the two butt joints 6 is respectively inserted into the two butt joint grooves 7, and the first outer core 4 and the second outer core 5 are tightly connected.

[0021] As shown in the figure, Figure 3 A first butt joint through hole 9 is formed through the outer surface of the first outer core 4 and close to the position of the two ends, a second butt joint through hole 10 is formed through the top end of the two butt joints 6 and located at the position of the first butt joint through hole 9, so that the fixing bolt 15 can be conveniently limited.

[0022] As shown in the figure, Figure 3 A threaded through hole 8 is formed through the top end of the first inner core 1 and the second inner core 2 and located at the position of the first butt joint through hole 9, a fixing bolt 15 is threadedly connected in the two threaded through holes 8, the bottom ends of the two fixing bolts 15 are respectively inserted into the first butt joint through hole 9 and the second butt joint through hole 10, and the overall connection and fixing effect is realized.

[0023] The utility model provides a kind of high-precision mutual inductor core, specific working principle as follows:

[0024] In the process of assembling the transformer core, the first inner core 1 and the second inner core 2 are spliced and positioned through the positioning block 11 and the positioning groove 12, then the first outer core 4 and the second outer core 5 are inserted into the clamping groove 4 and the two butt joints 6 are inserted into the butt joint groove 7 respectively to splice, finally the first inner core 1, the second inner core 2, the first outer core 4 and the second outer core 5 are tightly connected together by using the fixing bolt 15 to realize the assembly of the core.

[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision transformer core comprising a first inner core (1) and a second inner core (2), characterized in that: The first inner core (1) and the second inner core (2) are provided with clamping grooves (3) on the outer surface at the same position, a first outer core (4) and a second outer core (5) are inserted into the two clamping grooves (3), the first outer core (4) and the second outer core (5) are fixedly arranged at both ends, the first inner core (1) is provided with positioning grooves (12) at both ends, and the second inner core (2) is fixedly connected with positioning blocks (11) at both ends. The first inner core (1) and the second inner core (2) are provided with outer clamping shells (13) at the top and bottom, the outer clamping shells (13) are fixedly connected with butt clamping shells (14) between them, and the inner surface of the butt clamping shell (14) is closely attached to the outer surface of the first inner core (1) and the second inner core (2). The first outer core (4) is provided with butt grooves (7) at both ends, and the second outer core (5) is fixedly connected with butt joints (6) at both ends.

2. A high-precision transformer core according to claim 1, characterized in that: The first outer core (4) is provided with a first butt through hole (9) penetrating through the outer surface near both ends, and the top of the butt joint (6) is provided with a second butt through hole (10) penetrating through the first butt through hole (9).

3. A high-precision transformer core according to claim 2, characterized in that: The first inner core (1) and the second inner core (2) are provided with threaded through holes (8) penetrating through the top at the position of the first butt through hole (9), and the threaded through holes (8) are internally screwed with fixing bolts (15), and the bottom of the fixing bolts (15) is inserted into the first butt through hole (9) and the second butt through hole (10).

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