A transformer core
By introducing symmetrical fixing seats and limiting plate structures into the transformer core, and using a combination of threaded rods, nuts and positioning bolts for fixing, the problem of loose connection caused by core vibration is solved, and the number of cores can be flexibly adjusted and the connection can be stably connected to adapt to changes in the winding area of the electromagnetic coil.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI MINGQI TECH CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-12
AI Technical Summary
During operation, the connecting screws and nuts of existing transformer cores are prone to loosening due to vibration, affecting the fixing effect, and the number of cores is difficult to adjust flexibly.
The structure employs two symmetrical fixed seats and a limiting plate, which are fixed by a combination of threaded rods, nuts and positioning bolts to increase the tightness between the iron core and the fixed seat. The stable combination of the iron core and the flexible adjustment of the number are achieved by the sliding block and the slotted joint.
It achieves a stable connection between the iron core and the fixed base, prevents the nut from coming off, and allows for flexible increases or decreases in the number of iron cores to meet the needs of different electromagnetic coil winding areas.
Smart Images
Figure CN224355084U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer technology, specifically to a transformer core. Background Technology
[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. It has a common iron core and several windings connected to it, and the spatial positions of them remain unchanged. When a winding receives alternating current energy from a power source, it changes the voltage through the principle of electromagnetic induction, where inductance generates magnetism and magnetism generates electricity. The alternating current energy is transmitted to the other windings at the same frequency but with different voltages. The transformer core is the core magnetic circuit component of the transformer, and its function, materials, structure, and manufacturing process directly affect the performance and efficiency of the transformer.
[0003] Utility model CN221079779U discloses a transformer core, including a core, a fixing ring, and a clamping plate. The core is formed by stacking iron chips, with the edges of the iron chips arranged in a stepped manner from the inside to the outside. An insulating partition is provided on the outside of the iron chips. The insulating partition has a trapezoidal cross-section and rounded edges. A receiving groove for accommodating the fixing ring is provided on the insulating partition, and the bottom of the receiving groove has an arc structure. The fixing ring includes a strapping band, a mounting buckle, and a limiting block. The mounting buckle has through holes for the two ends of the strapping band to pass through.
[0004] The above technical solution involves insulating partitions at both ends of the iron core, which serve to insulate the iron core and prevent direct contact between it and the clamping plate. The insulating partitions have slots for the strapping tape to pass through, reducing wear between the strapping tape and the iron core. The strapping tape has rounded edges and is connected at both ends with mounting buckles, resulting in a more regular shape, reducing the length of the strapping tape extending outwards and minimizing space usage. The top of the strapping tape is limited by a limiting block, whose sides are also rounded to reduce wear with other components. However, the number of iron cores bundled cannot be easily increased or decreased. Changing the number makes it difficult to fix the position of the iron core. Furthermore, during operation, vibrations in the transformer can cause the connecting screws and nuts to loosen, easily slipping and detaching, affecting the fixation. Utility Model Content
[0005] The purpose of this invention is to provide a transformer core to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A transformer core includes two symmetric fixed seats, and several combined cores are arranged between the two fixed seats. Fixing plates are provided at the upper surfaces of the fixed seats near the left ends. Symmetric sliding grooves are formed at the middle positions of the opposite surfaces of the two fixed seats. Trapezoidal grooves are formed on the opposite surfaces of the two fixed seats outside the sliding grooves. A limiting plate is slidably inserted on the fixed seat, and threaded rods are symmetrically arranged between the limiting plate and the fixing plate.
[0008] Nuts are provided at the ends of the threaded rods. A threaded hole is formed on the outer wall of one of the nuts, and a positioning bolt is arranged in the threaded hole.
[0009] Further, the core is in the shape of a "day" character. Sliders are provided at the corresponding positions of both ends of the core corresponding to the sliding grooves. The sliders and the core are integrally formed structures, and the width of the outer wall of the slider is adapted to the width of the inner wall of the sliding groove.
[0010] In the present utility model, electromagnetic coils to be used are wound on the side columns of the core, and the sliders are inserted and matched with the sliding grooves, increasing the tightness of the insertion of the core and the fixed seat and the tightness of the fit.
[0011] Specifically, limiting holes are formed at the corresponding positions of the core surface corresponding to the threaded rods. First through holes and second through holes are respectively formed at the corresponding positions of the fixing plate and the limiting plate corresponding to the threaded rods.
[0012] In the present utility model, the diameters of the first through hole, the second through hole and the limiting hole are all adapted. The threaded rod passes through the first through hole, the limiting hole and the second through hole at one time, realizing the combined fixation between the core, the fixing plate and the limiting plate.
[0013] It should be noted that the fixing plate is trapezoidal, the bottom of the fixing plate is welded and fixed to the upper surface of the fixed seat, and the width of the outer wall of the fixing plate is adapted to the width of the outer wall of the limiting plate. <00000,30>In the present utility model, the corresponding core is clamped between the fixing plate and the limiting plate, and the distance between the limiting plate and the fixing plate is adjusted to realize the stable combined fixation of different numbers of cores.
[0015] It is worth supplementing that the threaded rod passes through the first through hole on the fixing plate, passes through the limiting hole, and extends into the second through hole. The nut is threadedly connected to the end of the threaded rod, the positioning bolt is threadedly connected to the threaded hole, and the end of the positioning bolt penetrates into the nut and is close to the outer wall of the threaded rod.
[0016] In the present utility model, the nut is threadedly connected to the threaded rod, and the positioning bolt is threadedly connected to the nut. The end of the positioning bolt is close to and in contact with the threaded rod, and the position of the nut is fixed under the action of friction, preventing the nut from disengaging from the threaded rod during vibration. <00000,35>
[0017] Furthermore, the bottom of the limiting plate is symmetrically provided with trapezoidal blocks, the trapezoidal blocks and the limiting plate are integrally formed, the width of the outer wall of the trapezoidal block is adapted to the width of the inner wall of the trapezoidal groove, and the trapezoidal block and the trapezoidal groove are slidably inserted into each other.
[0018] In this invention, the trapezoidal block slides with the trapezoidal groove, enabling the limiting plate to move horizontally on the fixed seat, thus preventing the limiting plate from detaching from the fixed seat and affecting the clamping fit between it and the fixed plate.
[0019] In addition, the iron cores are evenly spaced and adjacent iron cores are closely fitted together. The trapezoidal groove and the sliding groove both extend from the right end of the fixed base and communicate with the outside space.
[0020] In this invention, multiple iron cores are closely fitted together. Increasing or decreasing the number of iron cores facilitates increasing or decreasing the area of the iron cores, thereby increasing or decreasing the area of the electromagnetic coil winding. Furthermore, the trapezoidal groove facilitates the sliding of the limiting plate from the right end of the fixed plate, while the sliding groove restricts the iron core from sliding out from the right end. Without disassembling the threaded rod, the iron core can only be pulled out or installed in one direction.
[0021] Compared with the prior art, the beneficial effects of this utility model are:
[0022] 1. This utility model sets two fixed seats and multiple iron cores for clamping and cooperation. Under the combination of the limiting plate and the fixed plate, the corresponding threaded rod passes through the fixed plate and the iron core and exits from the limiting plate. With the cooperation of the nut with the positioning bolt, the distance between the limiting plate and the fixed plate is fixed. The positioning bolt fixes the position of the nut on the threaded rod under the action of friction. Different positions of the nut on the threaded rod achieve tight fitting and fixation between different numbers of iron cores.
[0023] 2. This utility model, by setting a slider and a groove to fit together, facilitates the tight insertion and installation of the iron core and the fixed seat, increasing the stability of the assembly. The trapezoidal block and the trapezoidal groove fit together to realize the stable horizontal movement of the limiting plate on the fixed seat, preventing the limiting plate from detaching from the fixed seat. With the cooperation of the first through hole, the second through hole and the limiting hole, it is convenient for the threaded rod to pass through and fix the assembly. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0025] Figure 2 This is a schematic diagram of the core adjustment and fixing of this utility model;
[0026] Figure 3 This is a schematic diagram of the fixing base structure of this utility model;
[0027] Figure 4 This is a schematic diagram of the separation structure of the fixing seat and the limiting plate of this utility model;
[0028] Figure 5 Schematic diagram of the threaded rod structure of the present utility model;
[0029] Figure 6 Schematic diagram of the iron core structure of the present utility model.
[0030] The meanings of each label in the figure are as follows:
[0031] 1. Fixed seat; 10. Fixed plate; 100. First through hole; 11. Slide groove; 12. Trapezoidal groove;
[0032] 2. Iron core; 20. Limiting hole; 21. Slide block;
[0033] 3. Limiting plate; 30. Trapezoidal block; 31. Second through hole;
[0034] 4. Threaded rod; 40. Nut; 400. Threaded hole; 41. Positioning bolt. Specific embodiments
[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0036] Please refer to Figures 1-6 , this embodiment provides a technical solution:
[0037] A transformer iron core includes two symmetrical fixed seats 1, and a plurality of combined iron cores 2 are provided between the two fixed seats 1. The iron core 2 is in a "day" shape. At both ends of the iron core 2, slide blocks 21 are provided corresponding to the slide grooves 11. The slide blocks 21 and the iron core 2 are integrally formed structures, and the width of the outer wall of the slide blocks 21 is adapted to the width of the inner wall of the slide grooves 11.
[0038] In the present utility model, an electromagnetic coil to be used is wound around the side columns of the iron core 2, and the slide blocks 21 are inserted and matched with the slide grooves 11, which increases the tightness of the insertion of the iron core 2 and the fixed seat 1 and also increases the tightness of the fit.
[0039] Furthermore, fixed plates 10 are provided at the upper surfaces of the fixed seats 1 near the left ends. The fixed plates 10 are trapezoidal in shape. The bottom of the fixed plates 10 is welded and fixed to the upper surface of the fixed seats 1, and the width of the outer wall of the fixed plates 10 is adapted to the width of the outer wall of the limiting plates 3.
[0040] In this utility model, the corresponding iron core 2 is clamped between the fixing plate 10 and the limiting plate 3, and the distance between the limiting plate 3 and the fixing plate 10 is adjustable to achieve stable combination and fixation for different numbers of iron cores 2.
[0041] Specifically, two fixed seats 1 are symmetrically provided with sliding grooves 11 in the middle of their opposing sides. Trapezoidal grooves 12 are provided on the outer side of the sliding grooves 11 on the opposing sides of the two fixed seats 1. The fixed seats 1 are also provided with slidingly inserted limiting plates 3. Trapezoidal blocks 30 are symmetrically provided at the bottom of the limiting plates 3. The trapezoidal blocks 30 and the limiting plates 3 are integrally formed. The width of the outer wall of the trapezoidal blocks 30 is adapted to the width of the inner wall of the trapezoidal grooves 12. The trapezoidal blocks 30 and the trapezoidal grooves 12 are slidably inserted.
[0042] In this utility model, the trapezoidal block 30 slides with the trapezoidal groove 12, so that the limiting plate 3 can move horizontally on the fixed seat 1, thus preventing the limiting plate 3 from detaching from the fixed seat 1 and affecting the clamping and cooperation with the fixed plate 10.
[0043] Secondly, threaded rods 4 are symmetrically provided between the limiting plate 3 and the fixing plate 10;
[0044] It should be noted that each end of the threaded rod 4 is provided with a nut 40, and one of the outer walls of the nut 40 is provided with a threaded hole 400, and each threaded hole 400 is provided with a positioning bolt 41.
[0045] Furthermore, the threaded rod 4 passes through the first through hole 100 on the fixed plate 10 and exits through the limiting hole 20, extending into the second through hole 31. The nut 40 is threadedly connected to the end of the threaded rod 4, and the positioning bolt 41 is threadedly connected to the screw hole 400. The end of the positioning bolt 41 is inserted into the nut 40 and close to the outer wall of the threaded rod 4.
[0046] In this utility model, the nut 40 is threadedly connected to the threaded rod 4, and the positioning bolt 41 is threadedly connected to the nut 40. The end of the positioning bolt 41 is close to the threaded rod 4 and fixes the position of the nut 40 under the action of friction, so as to prevent the nut 40 from coming off the threaded rod 4 during vibration.
[0047] Specifically, limit holes 20 are provided on the surface of the iron core 2 at the position corresponding to the threaded rod 4, and the first through hole 100 and the second through hole 31 are respectively provided on the fixing plate 10 and the limit plate 3 at the position corresponding to the threaded rod 4.
[0048] In this utility model, the diameters of the first through hole 100, the second through hole 31 and the limiting hole 20 are all matched. The threaded rod 4 passes through the first through hole 100, the limiting hole 20 and the second through hole 31 in one go, so as to realize the combination and fixation between the iron core 2 and the fixing plate 10 and the limiting plate 3.
[0049] It is worth adding that the iron cores 2 are evenly spaced, and the two adjacent iron cores 2 are closely fitted together. The trapezoidal groove 12 and the sliding groove 11 both extend from the right end of the fixed seat 1 and communicate with the outside space.
[0050] In this utility model, multiple iron cores 2 are closely fitted together. Increasing or decreasing the number of iron cores 2 facilitates increasing or decreasing the area of the iron cores 2, thereby increasing or decreasing the area of the electromagnetic coil winding. With the cooperation of the trapezoidal groove 12, the limiting plate 3 can slide out from the right end of the fixed seat 1. With the cooperation of the sliding groove 11, the iron core 2 is restricted from sliding out from the right end. Without disassembling the threaded rod 4, the iron core 2 can only be pulled out or installed in one direction.
[0051] In this embodiment, when the transformer core is used, the core 2 to be assembled is first installed between two fixed seats 1 by a slider 21. The slider 21 is inserted into the groove 11. Then, the corresponding limiting plate 3 is inserted into the trapezoidal groove 12 by a trapezoidal block 30. The threaded rod 4 passes through the first through hole 100 on the fixed plate 10, passes through the limiting hole 20, and passes through the second through hole 31. The nut 40 is threadedly connected to the threaded rod 4, and the positioning bolt 41 is threadedly connected to the screw hole 400 to fix the position of the nut 40.
[0052] When the number of iron cores 2 needs to be reduced or replaced, the positioning bolt 41 is removed, the nut 40 is removed, the corresponding limiting plate 3 slides out from the right end of the fixed seat 1, the corresponding iron core 2 is taken out from the threaded rod 4 or replaced, and then the limiting plate 3 is inserted and installed into the corresponding fixed seat 1. The nut 40 is threadedly connected to the threaded rod 4, and the positioning bolt 41 is fixed on the nut 40, fixing the position of the nut 40 under the action of friction.
Claims
1. A transformer core, comprising two symmetrical mounting bases (1), and a plurality of combined cores (2) disposed between the two mounting bases (1), characterized in that: On the upper surface of the fixed seat (1) near the left end, fixing plates (10) are provided. In the middle of the opposing surfaces of the two fixed seats (1), sliding grooves (11) are symmetrically formed. On the opposing surfaces of the two fixed seats (1) and outside the sliding grooves (11), trapezoidal grooves (12) are formed. A limiting plate (3) that is slidably inserted is also provided on the fixed seat (1). Symmetrically arranged threaded rods (4) are provided between the limiting plate (3) and the fixing plate (10). Nuts (40) are provided at the ends of the threaded rods (4). On one outer wall surface of the nut (40), a threaded hole (400) is formed. A positioning bolt (41) is provided in each of the threaded holes (400).
2. The transformer core according to claim 1, characterized in that: The iron core (2) is in the shape of a Chinese character 'Ri'. At both ends of the iron core (2) corresponding to the sliding grooves (11), sliders (21) are provided. The sliders (21) and the iron core (2) are of an integrally formed structure. The width of the outer wall of the slider (21) is adapted to the width of the inner wall of the sliding groove (11).
3. The transformer core according to claim 1, characterized in that: Limiting holes (20) are formed on the surface of the iron core (2) corresponding to the threaded rods (4). First through holes (100) and second through holes (31) are respectively formed on the fixing plate (10) and the limiting plate (3) corresponding to the threaded rods (4).
4. The transformer core according to claim 3, characterized in that: The fixing plate (10) is trapezoidal. The bottom of the fixing plate (10) is fixedly welded to the upper surface of the fixed seat (1). The width of the outer wall of the fixing plate (10) is adapted to the width of the outer wall of the limiting plate (3).
5. The transformer core according to claim 1, characterized in that: The threaded rod (4) passes through the first through hole (100) on the fixing plate (10), passes through the limiting hole (20), extends into the second through hole (31). The nut (40) is threadedly connected to the end of the threaded rod (4). The positioning bolt (41) is threadedly connected to the threaded hole (400), and the end of the positioning bolt (41) penetrates into the nut (40) and is close to the outer wall of the threaded rod (4).
6. The transformer core according to claim 1, characterized in that: Trapezoidal blocks (30) are symmetrically provided at the bottom of the limiting plate (3). The trapezoidal blocks (30) and the limiting plate (3) are of an integrally formed structure. The width of the outer wall of the trapezoidal block (30) is adapted to the width of the inner wall of the trapezoidal groove (12). The trapezoidal block (30) is slidably inserted into the trapezoidal groove (12).
7. The transformer core according to claim 1, characterized in that: The iron cores (2) are evenly distributed, and adjacent two iron cores (2) are closely fitted and close to each other. The trapezoidal grooves (12) and the sliding grooves (11) both penetrate out of the right end of the fixed seat (1) and communicate with the external space.