Split type ferrite core

Abstract

The utility model discloses a split type ferrite magnetic core, which belongs to the technical field of ferrite magnetic cores, and can ensure that the outer side of the magnetic core is not greatly changed after the split type magnetic core is mounted, and leads can be uniformly distributed and mounted at corresponding positions in the subsequent lead winding process. The effect of the magnetic core cannot be reduced, and the overall use effect of the subsequent magnetic core is not affected. The split type ferrite magnetic core comprises a first magnetic core frame body and a second magnetic core frame body, the first magnetic core frame body is of an inverted-U-shaped frame-shaped structure, the second magnetic core frame body is T-shaped, guide grooves are symmetrically formed in the inner side edge of the first magnetic core frame body, the second magnetic core frame body is arranged on the guide grooves in a sliding mode, and the two ends of the bottom of a cross rod of the second magnetic core frame body protrude out. An extrusion cavity is formed in the guide groove close to the top, and a positioning assembly for assisting in positioning the second frame body of the magnetic core is mounted in the extrusion cavity; the positioning assembly comprises a pressing frame, the pressing frame is of a 7-shaped platy structure, the interior of the pressing frame is hollow to form a cavity, and a supporting spring for assisting the pressing frame in outward supporting is installed in the cavity.

Description

Technical Field

[0001] The utility model belongs to the technical field of ferrite cores, and particularly relates to a split ferrite core. Background Art

[0002] A ferrite core is a high-frequency magnetic conductive material (the principle is the same as that of silicon steel sheets, but it is used in high-frequency environments). It is mainly used for high-frequency transformers (such as switching power supplies, flyback transformers, etc.), high-frequency magnetic rings (for anti-interference), etc. It increases the magnetic permeability and improves the inductance quality factor. In a transformer, the ferrite core is made of a dense and homogeneous ceramic-structured non-metallic magnetic material, has a low coercive force, and is also called a soft ferrite core. When a coil is wound around the ferrite core, an inductor or a transformer can be made.

[0003] The publication number "CN211265230U" discloses a split ferrite core, which includes a core body, an L-shaped fixing block, a C-shaped fixing block, a strip-shaped core, and a fastening bolt; the L-shaped fixing blocks are embedded in the left and right side corners of the core, a strip-shaped core is connected between the two L-shaped fixing blocks, the strip-shaped core is attached to the inner walls of the left and right columns of the core body, the C-shaped fixing block is sleeved outside the core, and the L-shaped fixing block and the C-shaped fixing block are connected by bolts. The split ferrite core of the utility model avoids the situation that the fixing buckle falls off during the use of the core; and because the strip-shaped core is attached to the inner walls of the left and right columns of the core, it prevents damage caused by different stresses at the splicing part of the core.

[0004] For the above-mentioned retrieved split ferrite core, when the overall installation of the split ferrite core is carried out, the overall installation of the split magnetism is realized through multiple groups of fixing blocks. After installation, due to the existence of the outer fixing blocks, it is easy to cause inconvenience in subsequent winding of the core, resulting in uneven distribution of the wires, affecting the subsequent functions of the core to enhance and concentrate the magnetic field. Therefore, a split ferrite core is needed to assist in solving this problem. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a split ferrite core. After the installation of the split core, there will be no major changes on the outside of the core, ensuring that during the subsequent process of winding the wire, the wire can be evenly distributed and installed at the corresponding positions, ensuring that the function of the core will not be reduced and affecting the overall use effect of the subsequent core.

[0007] (2) Technical Solutions

[0008] To solve the above technical problems, the present utility model provides such a split ferrite core, which includes a first core frame and a second core frame. The first core frame has an inverted U-shaped frame structure, and the second core frame has a T-shaped structure. Guide grooves are symmetrically formed on the inner side edges of the first core frame, and the second core frame is slidably arranged on the guide grooves. Both ends of the bottom of the cross bar of the second core frame protrude. An extrusion cavity is formed near the top of the guide groove, and a positioning component for assisting in positioning the second core frame is installed in the extrusion cavity;

[0009] The positioning component includes a pressing frame hingedly installed in the extrusion cavity. The pressing frame has a 7-shaped plate structure, and the inside of the pressing frame is hollow to form a cavity. A supporting spring for assisting the pressing frame to expand outwards is installed in the cavity. A sliding groove for one end of the pressing frame to slide is formed inside the first core frame, and one end of the pressing frame is slidably arranged in the sliding groove.

[0010] Furthermore, protruding blocks are prominently arranged on the inner side edge of the first core frame corresponding to the pressing frame and on the inner side edge of the pressing frame, and the supporting spring is snap-fitted between the two protruding blocks.

[0011] Furthermore, protruding blocks are integrally formed at both ends of the bottom of the second core frame, and the protruding blocks are snap-fitted with the top of the pressing frame.

[0012] Furthermore, a penetrating column is vertically fixed at the middle section of the bottom of the first core frame, and a penetrating hole is vertically formed in the middle section of the second core frame with a hollow inside. The penetrating column and the penetrating hole are inserted and matched with each other.

[0013] Furthermore, limiting strips are vertically protruded on both side edges of the penetrating hole, and limiting grooves are symmetrically formed on both side edges of the penetrating column. The limiting grooves and the limiting strips are inserted and matched with each other.

[0014] Furthermore, a bottom plate is horizontally fixed at the bottom of the second core frame, and guide blocks are prominently fixed at both ends of the top of the bottom plate. The guide blocks and the guide grooves are inserted and matched with each other.

[0015] Furthermore, a threaded mounting hole is horizontally penetrated through the guide block, and a guide through hole is horizontally formed at the bottom of the outer side edge of the first core frame. The guide through hole is communicated with the inside of the guide groove, and a positioning bolt is installed at the guide through hole. The positioning bolt is threadedly matched with the threaded mounting hole.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The present invention provides a plurality of guide grooves on the inner side of the first magnetic core frame and the cooperation between the positioning component and the T-shaped magnetic core second frame, so that the limit groove on the through-hole column and the limit strip are plugged into each other, and the magnetic core second frame is slidably arranged in the guide groove, pushing the bottom plate upward. During the pushing process of the bottom plate, the magnetic core second frame moves upward along the guide groove as a whole. When the guide groove reaches the bottom of the pressing frame, it continues to push the bottom plate, and the top of the second magnetic core frame squeezes the pressing frame during the squeezing process of the pressing frame, driving the supporting spring as a whole to be pushed and squeezed, thereby pushing the second magnetic core frame as a whole upward. When the second magnetic core frame reaches the upper part of the pressing frame, the pressing frame is pushed as a whole under the action of the compressed supporting spring, thereby being placed under the lower part of the second magnetic core frame, thereby assisting the clamping and positioning of the second magnetic core frame. After the split magnetic core is installed, the outer side of the magnetic core will not be greatly changed, ensuring that the wires can be evenly distributed and installed in the corresponding positions during the subsequent winding process, ensuring that the function of the magnetic core will not be reduced and affect the overall use effect of the subsequent magnetic core.

[0019] The utility model is provided with a bottom plate integrally formed with the second frame of the magnetic core and the cooperation between the guide block and the positioning bolt, etc., so that after the magnetic core is initially positioned and installed as a whole, the positioning bolt can be inserted and installed in the guide hole, and the positioning bolt and (61) are threadedly matched to complete the overall positioning of the guide block, thereby ensuring that the magnetic core can form a whole during subsequent work, and trying to avoid the situation where the pressing frame retracts under the action of centrifugal force during the rotation of the magnetic core, causing the second frame of the magnetic core to become loose as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model after partial disassembly;

[0023] Figure 3 This is a schematic diagram of the structure of the utility model when it is disassembled and unfolded as a whole;

[0024] Figure 4 It is a longitudinal cross-sectional view of the first frame of the magnetic core of the present invention corresponding to the positioning component.

[0025] The markings in the attached drawings are as follows: 1. The first core frame; 2. The threading post; 21. The limiting groove; 3. The second core frame; 4. The threading hole; 41. The limiting strip; 5. The bottom plate; 6. The guiding block; 7. The threaded mounting hole; 8. The guiding groove; 9. The positioning bolt; 10. The positioning component; 101. The sliding groove; 11. The pressing frame; 111. The protruding block; 12. The supporting spring. Detailed implementation mode

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] This detailed implementation mode is a split ferrite core, as Figure 1 , Figure 2 and Figure 3 shown. The split ferrite core includes the first core frame 1 and the second core frame 3. The first core frame 1 has an inverted U-shaped frame structure, and the second core frame 3 has a T-shaped structure. A threading post 2 is vertically fixed at the middle section of the bottom of the first core frame 1. A threading hole 4 is vertically and hollowly opened at the middle section of the second core frame 3. The threading post 2 and the threading hole 4 are cooperatively inserted. Limiting strips 41 protrude vertically on both sides of the threading hole 4. Limiting grooves 21 are symmetrically opened on both sides of the threading post 2. The limiting grooves 21 and the limiting strips 41 are cooperatively inserted. Through the cooperation between the limiting strips 41 and the limiting grooves 21, etc., it can play an auxiliary limiting role during the threading process of the threading post 2 and the threading hole 4 during work, ensuring that the first core frame 1 and the second core frame 3 can be stably clamped and connected to form a ferrite core frame later.

[0028] Referring to Figure 1 , Figure 2 and Figure 4 shown, guiding grooves 8 are symmetrically opened on the inner side edges of the first core frame 1. The second core frame 3 is slidably arranged on the guiding grooves 8. Both ends of the bottom of the cross bar of the second core frame 3 protrude. An extrusion cavity is opened near the top of the guiding groove 8. A positioning component 10 for assisting in positioning the second core frame 3 is installed in the extrusion cavity. The positioning component 10 includes a pressing frame 11 hingedly installed in the extrusion cavity. The pressing frame 11 has a 7-shaped plate structure. The inside of the pressing frame 11 is hollow to form a cavity. A supporting spring 12 for assisting the pressing frame 11 to push outwards is installed in the cavity. A sliding groove 101 for one end of the pressing frame 11 to slide is opened inside the first core frame 1. One end of the pressing frame 11 is slidably arranged in the sliding groove 101.

[0029] By means of the cooperation between the guide groove 8 provided on the inner side of the first frame 1 of the magnetic core and the positioning component 10 and the T-shaped second frame 3 of the magnetic core, the limiting groove 21 on the penetrating column 2 is cooperated with the limiting bar 41 to be plugged into it, and the second frame 3 of the magnetic core is slidably set inside the guide groove 8, pushing the bottom plate 5 upward. In the process of pushing the bottom plate 5, the second frame 3 of the magnetic core moves upward as a whole along the guide groove 8. When the guide groove 8 reaches the bottom of the pressing frame 11, it continues to push the bottom plate 5, and the top of the second frame 3 of the magnetic core squeezes the pressing frame 11. In the process of squeezing the pressing frame 11, the support spring 1 is driven. 2 is pushed and squeezed as a whole, so that the second frame 3 of the magnetic core is pushed upward as a whole. When the second frame 3 of the magnetic core reaches the top of the pressing frame 11, the pressing frame 11 is pushed as a whole under the action of the compressed supporting spring 12, so that it is placed just below the second frame 3 of the magnetic core, thereby performing auxiliary clamping and positioning on the second frame 3 of the magnetic core. After the split magnetic core is installed, the outer side of the magnetic core will not be greatly changed, ensuring that the wires can be evenly distributed and installed in the corresponding positions during the subsequent winding process, ensuring that the effect of the magnetic core will not be reduced and affecting the overall use effect of the subsequent magnetic core

[0030] The inner side edge of the pressing frame 11 at the first frame 1 of the magnetic core and the inner side edge of the pressing frame 11 are both protrudingly provided with protruding blocks 111, and the support spring 12 is clamped and installed between the two protruding blocks 111. The protruding blocks 111 are set to ensure that the support spring 12 will not shift during the pressing or releasing process during operation.

[0031] A bottom plate 5 is fixed horizontally at the bottom of the second frame 3 of the magnetic core, and guide blocks 6 are protruding and fixed at both ends of the top of the bottom plate 5. The guide blocks 6 are plugged into the guide grooves 8. A threaded mounting hole 7 is horizontally penetrated on the guide block 6. A through hole is horizontally opened at the bottom of the outer side of the first frame 1 of the magnetic core. The through hole is connected to the inside of the guide groove 8. A positioning bolt 9 is installed at the through hole, and the positioning bolt 9 is threadedly engaged with the threaded mounting hole 7.

[0032] By setting the bottom plate 5 integrally formed with the second frame 3 of the magnetic core and cooperating with the guide block 6 and the positioning bolt 9, the positioning bolt 9 can be inserted and installed in the guide hole after the overall magnetic core is initially positioned and installed, and the positioning bolt 9 is threadedly matched with the threaded mounting hole 7 to complete the overall positioning of the guide block 6, thereby ensuring that the magnetic core can form a whole during subsequent work, and trying to avoid the situation where the pressing frame 11 retracts under the action of centrifugal force during the rotation of the magnetic core, causing the overall loosening of the second frame 3 of the magnetic core.

[0033] Working principle:

[0034] When the core needs to be installed integrally, the limiting groove 21 on the penetrating column 2 is matched with the limiting strip 41 for insertion, and the second core frame body 3 is slidably arranged inside the guiding groove 8. Push the bottom plate 5 upward. During the pushing process of the bottom plate 5, the second core frame body 3 moves upward integrally along the guiding groove 8. When the guiding groove 8 reaches the bottom of the pressing frame 11, continue to push the bottom plate 5. The top of the second core frame body 3 presses the pressing frame 11. During the pressing process of the pressing frame 11, the supporting spring 12 is driven to be pushed and compressed integrally, so that the second core frame body 3 is pushed upward integrally. When the pressing frame 11 reaches directly above the second core frame body 3, under the action of the compressed supporting spring 12, the pressing frame 11 is driven to be pushed integrally, so as to be set directly below the second core frame body 3, thereby assisting in clamping and positioning the second core frame body 3. After the second core frame body 3 is pushed to the designated position, at this time, the guiding block 6 is inserted and installed on the guiding groove 8, the positioning bolt 9 is inserted and installed at the guiding through hole, and the positioning bolt 9 is in threaded fit with the threaded installation hole 7, thereby completing the overall positioning of the guiding block 6.

[0035] During disassembly, the positioning bolt 9 is disassembled in sequence, and the pressing frame 11 is pressed downward. When the pressing frame 11 is pushed, the supporting spring 12 is compressed. When the pressing frame 11 is flush with the bottom of the second core frame body 3, pulling the bottom plate 5 downward can realize the combined disassembly between the first core frame body 1 and the second core frame body 3.

[0036] All the technical features in this embodiment can be freely combined according to actual needs.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A split ferrite core, the split ferrite core comprising a first core frame (1) and a second core frame (3), characterized in that, The first core frame (1) is in an inverted U-shaped frame structure, the second core frame (3) is in a T-shaped structure. Guide grooves (8) are symmetrically formed on the inner side edges of the first core frame (1). The second core frame (3) is slidably arranged on the guide grooves (8). Both ends of the bottom of the cross bar of the second core frame (3) protrude. An extrusion cavity is formed near the top of the guide groove (8), and a positioning component (10) for assisting in positioning the second core frame (3) is installed in the extrusion cavity. The positioning component (10) includes a pressing frame (11) hinged and installed in the extrusion cavity. The pressing frame (11) is in a 7-shaped plate structure. The inside of the pressing frame (11) is hollow to form a cavity, and a supporting spring (12) for assisting the pressing frame (11) to expand outwards is installed in the cavity. A sliding groove (101) for one end of the pressing frame (11) to slide is formed inside the first core frame (1), and one end of the pressing frame (11) is slidably arranged in the sliding groove (101).

2. The split ferrite core according to claim 1, wherein, On the inner side edge of the first core frame (1) corresponding to the pressing frame (11) and on the inner side edge of the pressing frame (11), protruding blocks (111) are both protrudingly arranged. The supporting spring (12) is clamped and installed between the two protruding blocks (111).

3. The split ferrite core according to claim 2, characterized in that, At both ends of the bottom of the second core frame (3), protruding blocks are integrally formed, and the protruding blocks are clamped and matched with the top of the pressing frame (11).

4. A split ferrite magnetic core according to claim 1, wherein A penetrating column (2) is vertically fixed at the middle section of the bottom of the first core frame (1). A penetrating hole (4) is vertically formed in the middle section of the second core frame (3) and is hollow inside. The penetrating column (2) and the penetrating hole (4) are inserted and matched with each other.

5. The split ferrite magnetic core according to claim 4, characterized in that, Limiting strips (41) are vertically protrudingly arranged on both side edges of the penetrating hole (4). Limiting grooves (21) are symmetrically formed on both side edges of the penetrating column (2). The limiting grooves (21) and the limiting strips (41) are inserted and matched with each other.

6. The split ferrite core according to claim 1, characterized in that, A bottom plate (5) is horizontally fixed at the bottom of the second core frame (3). Guide blocks (6) are protrudingly fixed at both ends of the top of the bottom plate (5). The guide blocks (6) and the guide grooves (8) are inserted and matched with each other.

7. The split ferrite core according to claim 6, wherein, A threaded mounting hole (7) is horizontally penetrated through the guide block (6). A guide through hole is horizontally formed at the bottom of the outer side edge of the first core frame (1), and the guide through hole is communicated with the inside of the guide groove (8). A positioning bolt (9) is installed at the guide through hole, and the positioning bolt (9) and the threaded mounting hole (7) are in threaded cooperation with each other.

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