Clamping and fixing type patch transformer convenient to disassemble

Abstract

The utility model discloses a clamping and fixing type patch transformer convenient to disassemble, which relates to the technical field of transformers and comprises a wire winding framework, insulating bases are arranged on the left side and the right side of the wire winding framework, pins are arranged on the insulating bases, edges are formed on the left side and the right side of the wire winding framework, and a winding is wound between the two edges of the wire winding framework. The winding is provided with a lead electrically connected with the pin, and two magnetic cores which are mounted in pairs are arranged on two sides of the winding framework; a clamping sleeve of an n-shaped structure is arranged outside the two magnetic cores, the clamping sleeve comprises a top cover part and side clamping parts on the two sides of the top cover part, the side clamping parts on the two sides of the top cover part can be expanded towards the opposite sides and then clamp and fix the two magnetic cores through elastic deformation recovery, and the two magnetic cores can be clamped and fixed through the clamping force generated when the side clamping parts on the two sides of the clamping sleeve are expanded and subjected to elastic deformation recovery. According to the transformer, the two magnetic cores are clamped and fixed through the clamping sleeve, when the clamping sleeve needs to be disassembled, the clamping sleeve can be rapidly disassembled to relieve fixation of the two magnetic cores, and disassembly of the transformer and maintenance or replacement of the transformer are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a clamped type patch transformer which is convenient for disassembly. Background Technique

[0002] A transformer refers to a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are a coil skeleton, a coil wound around the coil skeleton, and an iron core. The main functions of a transformer are: voltage conversion, current conversion, impedance matching, isolation, voltage regulation, etc. Among them, a patch transformer, also known as an SMD transformer, is a miniaturized transformer using surface mount technology (SMT), mainly used in modern electronic devices. As electronic devices tend to be more miniaturized, miniaturized transformers with high-density surface mounting have become a direction for the miniaturization development of electronic devices, and patch transformers are increasingly used in the magnetic cores of various electronic devices.

[0003] In the prior art, in the structural design of a patch transformer, the magnetic core can be divided into two parts (such as E-I type or EC type). In this way, after inserting one side of the magnetic core, the other side of the magnetic core can be installed. After assembly, in this case, in order to fix the two magnetic cores, adhesives are usually used to fix the two magnetic cores to the skeleton. However, the fixing method of the adhesive is not convenient for disassembling the two magnetic cores, which is particularly important when the magnetic core or winding has problems and needs to be repaired or replaced.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above problems. Content of the Utility Model

[0005] The utility model aims to provide a technical solution that can solve the problem that the existing magnetic core fixing method is not convenient for disassembly to overcome the above situation.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A clamped type patch transformer which is convenient for disassembly, including a winding skeleton, insulating bases are arranged on both the left and right sides of the winding skeleton, pins are arranged on the insulating bases, edges are formed on both the left and right sides of the winding skeleton, a winding is wound between the two edges of the winding skeleton, leads electrically connected to the pins are arranged on the winding, and two paired magnetic cores are arranged on both sides of the winding skeleton;

[0007] A jacket with a "冂" - shaped structure is arranged outside the two magnetic cores. The jacket includes a top cover part and side clamping parts on both sides of the top cover part. The side clamping parts on both sides of the top cover part can be expanded to the opposite sides and then clamp and fix the two magnetic cores by using the elastic deformation recovery property.

[0008] As a further solution of the present invention: the left and right sides of the upper end of the insulating base are formed with ear edges, and the sleeve also includes straight edges formed at the lower ends of the clamping parts on both sides, and the lower ends of the two straight edges are formed with blocks on the opposite sides that can abut and cooperate with the ear edges.

[0009] As a further solution of the present invention: limit blocks are provided on both sides of the lower end surface along the edge of the hanging ear, and the two limit blocks are respectively located on both sides of the clamping block.

[0010] As a further solution of the present invention: ear lifting parts are provided on the front and rear sides of the straight edge part.

[0011] As a further solution of the present invention: the side clamping portion has an arc-shaped portion, and the arc-shaped portions of the side clamping portions on both sides have opposite sides as convex surfaces;

[0012] The width between the opposite side surfaces of the two arc-shaped portions is smaller than the width between the opposite side surfaces of the two magnetic cores.

[0013] As a further solution of the present invention: a guide slope is provided at the lower end of the clamping block, and an abutting slope corresponding to the guide slope is formed along the upper end of the edge of the hanging ear.

[0014] As a further solution of the present invention: the connecting corners between the top cover portion and the side clamping portion are rounded.

[0015] Compared with the existing technology, the beneficial effects of this technical solution are:

[0016] The two cores are clamped and fixed by the clamping force of the side clamps on both sides of the jacket that recover elastically after expansion. When the jacket needs to be removed for disassembly, the jacket can be quickly removed to release the fixation of the two cores, thereby facilitating the disassembly of the transformer and making it easier to repair or replace the transformer.

[0017] The arc-shaped part of the side clamping part can facilitate the installation and removal of the jacket;

[0018] The jacket not only holds the two cores together, but also abuts against the edges of the ears of the insulating base through the clamping blocks on the straight edges. This ensures that the jacket not only fixes the two cores together, but also fixes the two cores and the insulating base together, thereby improving the overall stability of the transformer.

[0019] At the same time, the lifting ears on the straight edge can be used to facilitate the removal of the jacket.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 It is another structural schematic diagram of the utility model;

[0024] Figure 3 It is a schematic diagram of the planar structure of the jacket of the utility model in its initial state;

[0025] Figure 4 yes Figure 2 A magnified schematic diagram of the local structure at center A;

[0026] The corresponding reference numerals in the accompanying drawings are described as follows:

[0027] 1. Wire winding skeleton; 2. Insulating base; 201. Ear edge; 2011. Abutment slope; 202. Limit block; 3. Pin; 4. Magnetic core; 5. Jacket; 501. Top cover; 502. Side clamping part; 5021. Arc-shaped part; 503. Straight edge; 5031. Ear lifting part; 504. Block; 5041. Guide slope. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-4 A clamp-type chip transformer that is easy to disassemble includes a bobbin 1, an insulating base 2 is provided on both sides of the bobbin 1, the insulating base 2 is provided with a pin 3, and edges are formed on both sides of the bobbin 1. A winding is wound between the two edges of the bobbin 1, and the winding is provided with a lead wire electrically connected to the pin. Two magnetic cores 4 are provided on both sides of the bobbin 1.

[0030] The entire insulating base 2 is made of insulating materials. The windings wound around the winding skeleton 1 can lead out leads and be wound and welded to the pins 3 of the insulating base 2. When performing SMT mounting, the pins will be docked with the solder paste at the preset position on the PCB board and be fixedly electrically connected to the PCB during reflow soldering, so that the patch transformer is mounted on the PCB board. Among them, the axis of the winding skeleton 1 has a through hole, and both magnetic cores 4 have magnetic columns corresponding to the through hole. When installing the two magnetic cores 4, the magnetic columns of the two magnetic cores 4 are correspondingly inserted into the through hole of the winding skeleton 1. At the same time, the two magnetic cores can be installed on both sides of the winding skeleton 1 by covering the through hole and obtain initial fixation, so as to facilitate the subsequent fixation of the two magnetic cores 4 and the insulating base 2.

[0031] There is a jacket 5 with a "冂"-shaped structure outside the two magnetic cores 4. The jacket 5 includes a top cover part 501 and side clamping parts 502 on both sides of the top cover part 501. The side clamping parts 502 on both sides of the top cover part 501 can be expanded to the opposite side and then clamp and fix the two magnetic cores 4 by the resilience of elastic deformation. Among them, the jacket 5 can be made of hard plastics with relatively high strength and good heat resistance, such as ABS materials, etc. The insulation of the plastic itself can avoid affecting the working effect of the transformer. In addition, the jacket 5 can also be made of non-magnetic metal alloys, such as stainless steel materials, to ensure that the material is non-magnetic so as not to affect the magnetic circuit performance of the transformer. At the same time, insulation measures such as insulating films and insulating paints are added to the outer layer of the jacket 5 to ensure electrical isolation to prevent short circuits.

[0032] Specifically, the jacket 5 is pushed down from top to bottom towards the two assembled magnetic cores 4. During the pushing-down process, the side clamping parts 502 on both sides are first expanded outwards, so that the side clamping parts 502 of the jacket 5 cover the two magnetic cores 4. At the same time, after the side clamping parts 502 cover the two magnetic cores 4, the side clamping parts 502 are loosened, so that the side clamping parts 502 clamp the two magnetic cores 4 while restoring their original shape, thereby clamping and fixing the two magnetic cores 4. When disassembly is required, the jacket 5 can be directly pulled upwards to separate it from the two magnetic cores 4, or the side clamping parts 502 on both sides can be first expanded outwards on both sides and then the entire jacket 5 can be taken away from the two magnetic cores 4, which can quickly release the fixation of the two magnetic cores 4, so as to facilitate the disassembly of the transformer and facilitate the repair or replacement of the transformer.

[0033] Preferably, the side clamping part 502 has an arc part 5021, and the arc parts 5021 of the two side clamping parts 502 are both convex surfaces with respect to the opposite side;

[0034] Among them, the width between the opposite sides of the two arc parts 5021 is smaller than the width between the opposite sides of the two magnetic cores 4, such as Figure 3As shown, the initial state of the sleeve 5 is that the width between the protruding parts of the two arc-shaped parts 5021 is smaller than the width of the two magnetic cores, so that when the sleeve is installed, the clamping parts 502 on both sides first expand outward using the arc-shaped parts 5021, and then after the two magnetic cores are wrapped, the elastic deformation is restored and the force toward the middle is used to clamp the two magnetic cores in place.

[0035] When the sleeve 5 is put on the two magnetic cores 4, after the arc-shaped portion 5021 of the side clamping portion 502 contacts the side corner of the magnetic core 4, due to the downward pressure force and the arc line of the arc-shaped portion 5021, the side clamping portion 502 gradually deforms and expands to both sides until the two arc-shaped portions 5021 clamp the two magnetic cores 4 in the middle. At this time, the clamping force of the side clamping portion 502 restored to the middle enables the two arc-shaped portions 5021 to clamp and fix the two magnetic cores 4, and when disassembling, the sleeve 5 can be easily removed from the two magnetic cores 4 as a whole.

[0036] In some embodiments, as Figure 2 and Figure 4 The insulating base 2 has a hanging ear edge 201 formed on both sides of the upper end. The jacket 5 also includes a straight edge 503 formed at the lower end of the clamping portion 502 on both sides. The lower ends of the two straight edges 503 are formed with a clamping block 504 on the opposite side thereof, which can abut against the hanging ear edge 201.

[0037] The lower end of the block 504 is provided with a guide slope 5041, and the upper end of the hook edge 201 is formed with an abutting slope 2011 corresponding to the guide slope 5041.

[0038] Specifically, when the jacket 5 is installed, the side clamping parts 502 on both sides expand outwards and move downwards at the same time, and the guide inclined surface 5041 of the clamping block 504 at the lower end of the straight edge 503 abuts against the abutting inclined surface 2011 of the edge 201 of the hanging ear. As the jacket 5 continues to move downwards as a whole, the straight edge 503 expands outwards, and the clamping block 504 passes over the edge 201 of the hanging ear. After that, as the material recovers to the middle, the upper end surface of the clamping block 504 is aligned with the lower end of the edge 201 of the hanging ear. The surfaces of the two magnetic cores 4 are against each other, so that the jacket 5 not only fixes the two magnetic cores 4 together, but also fixes the two magnetic cores 4 and the insulating base 2 together, which can improve the overall stability of the transformer and prevent loosening between the components. When the jacket 5 needs to be removed due to disassembly, the side clamping parts 502 can be expanded downward and outward through both sides of the side clamping parts 502 or the straight edge parts 503, so that the block 504 is separated from the edge 201 of the hanging ear, and then the jacket 5 is removed.

[0039] Preferably, limit blocks 202 are provided on both sides of the lower end surface of the edge 201 of the hanging ear, and the two limit blocks 202 are respectively located on both sides of the clamping block 504.

[0040] Specifically, after the clamping block 504 forms an abutment fit with the ear edge 201 to fix the two magnetic cores 4 to the insulating base 2, the clamping block 504 is limited by the limit blocks 202 on both sides of the lower end of the ear edge 201 to prevent the clamping block 504 and the entire jacket 5 from moving.

[0041] More preferably, ear lift portions 5031 are provided on the front and rear sides of the straight edge portion 503 .

[0042] Specifically, the straight edge portion 503 and the side clamping portion 502 can be easily expanded outward through the lifting ears 5031 on both sides, further facilitating the removal of the jacket 5 .

[0043] Furthermore, the connecting corners between the top cover portion 501 and the side clamping portion 502 are rounded.

[0044] Specifically, through this arrangement, when the side clamping portion 502 is deformed and expanded, the stress on the connecting corner can be relatively dispersed, thereby avoiding excessive concentration of deformation stress and resulting in a short service life of the material.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A clamp-type chip transformer that is easy to disassemble, characterized in that: It includes a winding skeleton (1). Insulating bases (2) are provided on both the left and right sides of the winding skeleton (1). The insulating bases (2) are provided with pins (3). Along edges are formed on both the left and right sides of the winding skeleton (1). A winding is wound between the two along edges of the winding skeleton (1). The winding is provided with leads electrically connected to the pins. Two magnetic cores (4) for paired installation are provided on both sides of the winding skeleton (1). A jacket (5) with a "冂"-shaped structure is provided outside the two magnetic cores (4). The jacket (5) includes a top cover part (501) and side clamping parts (502) on both sides of the top cover part (501). The side clamping parts (502) on both sides of the top cover part (501) can be expanded to the opposite sides and then clamp and fix the two magnetic cores (4) by elastic deformation recovery.

2. The clamp-type easily disassembled chip transformer according to claim 1, characterized in that: An arc part (5021) is provided on the side clamping part (502). The arc parts (5021) of the two side clamping parts (502) are both convex surfaces on the relative side. Among them, the width between the opposite sides of the two arc parts (5021) is smaller than the width between the opposite sides of the two magnetic cores (4).

3. The clamp-type easily disassembled chip transformer according to claim 2, characterized in that: Hanging ear edges (201) are formed on the upper left and right sides of the insulating base (2). The jacket (5) further includes straight edge parts (503) formed at the lower ends of the two side clamping parts (502). Clamping blocks (504) that can be in abutting fit with the hanging ear edges (201) are formed on the opposite sides of the lower ends of the two straight edge parts (503).

4. The clamp-type easily disassembled chip transformer according to claim 3, characterized in that: Limit blocks (202) are provided on both sides of the lower end surface of the hanging ear edge (201), and the two limit blocks (202) are respectively on both sides of the clamping block (504).

5. The clamp-type easily disassembled chip transformer according to claim 4, characterized in that: Lifting ear parts (5031) are provided on the front and back sides of the straight edge part (503).

6. The clamp-type easily disassembled chip transformer according to claim 3, characterized in that: A guiding inclined surface (5041) is provided at the lower end of the clamping block (504), and an abutting inclined surface (2011) corresponding to the guiding inclined surface (5041) is formed at the upper end of the hanging ear edge (201).

7. The clamp-type easily disassembled chip transformer according to claim 2, characterized in that: The connection corners between the top cover part (501) and the side clamping part (502) are subjected to rounded corner treatment.

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