Gasket for reducing sintering deformation of magnetic core
By designing a spacer for sintering magnetic cores, the problem of deformation during the sintering of large-size magnetic cores was solved. This enabled the magnetic core and spacer to shrink synchronously and uniformly, avoiding deformation and improving the yield.
Patent Information
- Application Number
- CN202520241275.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-14
AI Technical Summary
Large magnetic cores are prone to deformation during sintering, which affects the yield.
Design a pad body with a placement groove corresponding to the legs of the magnetic core. The pad body is made of the same material as the magnetic core, has the same density, has a draft angle, and its height is equal to the thickness of the back of the magnetic core. The inner wall distance is appropriate, so as to shrink synchronously and uniformly with the magnetic core.
This effectively avoids deformation of the magnetic core legs and improves the sintering yield.
Smart Images
Figure CN223651267U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of magnetic core sintering technology, specifically relating to a gasket that reduces magnetic core sintering deformation. Background Technology
[0002] With the rapid development of transformers, inductors, and especially new energy vehicles and charging piles, the use of ferrite cores is increasing, and the core size is also getting larger.
[0003] Currently, many large-sized magnetic cores, especially those with long legs, suffer severe deformation (outward or inward) during the sintering process, affecting the product yield and even preventing sintering altogether.
[0004] Therefore, there is an urgent need for a gasket to reduce core sintering deformation and improve the yield of sintered products. Utility Model Content
[0005] The purpose of this invention is to provide a gasket that reduces sintering deformation of magnetic cores, thereby solving the problems mentioned in the background art. The gasket provided by this invention reduces sintering deformation of magnetic cores and improves the yield of sintered products.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a gasket for reducing sintering deformation of magnetic cores, comprising a gasket body, wherein two placement grooves corresponding to the legs of the magnetic core are provided on the upper surface of the gasket body, and the length and width dimensions of the placement grooves are equal to the length and width dimensions of the end face of the legs of the magnetic core.
[0007] Furthermore, the depth of the placement groove is 0.5 mm.
[0008] To ensure that the spacer body and the magnetic core can shrink synchronously and uniformly during sintering, the material of the spacer body is the same as that of the magnetic core.
[0009] To ensure that the spacer body and the magnetic core can shrink synchronously and uniformly during sintering, the density of the spacer body is further equal to the density of the magnetic core.
[0010] To facilitate the assembly of the magnetic core and the pad body, draft angles are provided on both long sides of the placement slot. Each draft angle is 20°.
[0011] To ensure that the spacer body and the magnetic core can shrink synchronously and uniformly during sintering, the height h of the spacer body is further equal to the thickness t of the back of the magnetic core.
[0012] To ensure that the pad body and the magnetic core can shrink synchronously and uniformly during sintering, the distance w from the inner wall of the placement groove to the side of the corresponding pad body is further 5-10mm.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model is provided with a gasket body, and two placement grooves corresponding to the legs of the magnetic core are provided on the upper surface of the gasket body. The legs of the magnetic core are placed in the placement grooves, and the gasket body and the magnetic core are sintered together. The placement grooves can effectively prevent the legs of the magnetic core from deforming.
[0015] 2. The material of the gasket body is the same as that of the magnetic core, and the density of the gasket body is equal to that of the magnetic core, ensuring that the gasket body and the magnetic core can shrink synchronously and uniformly during sintering, thus avoiding deformation of the legs of the magnetic core.
[0016] 3. The two long sides of the placement groove of this utility model are provided with draft angles to facilitate the assembly of the magnetic core and the pad body;
[0017] 4. The height h of the gasket body of this utility model is equal to the thickness t of the back of the magnetic core. The distance w from the inner wall of the placement groove to the corresponding side of the gasket body is 5-10mm, which ensures that the gasket body and the magnetic core 3 can shrink synchronously and uniformly during sintering, and avoids deformation of the legs of the magnetic core. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the gasket body of this utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the magnetic core and the gasket body after assembly.
[0020] Figure 3 This is a top view of the gasket body of this utility model;
[0021] Figure 4 This utility model Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;
[0022] Figure 5 This is a schematic diagram of the magnetic core structure of this utility model;
[0023] In the diagram: 1. Gasket body; 2. Placement slot; 3. Magnetic core. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example 1
[0026] Please see Figures 1-5 The present invention provides the following technical solution: a gasket for reducing the sintering deformation of a magnetic core, comprising a gasket body 1, wherein two placement grooves 2 corresponding to the legs of a magnetic core 3 are provided on the upper surface of the gasket body 1, and the length and width dimensions of the placement grooves 2 are equal to the length and width dimensions of the end face of the legs of the magnetic core 3.
[0027] By adopting the above technical solution, this utility model provides a pad body 1, and two placement grooves 2 corresponding to the legs of the magnetic core 3 are provided on the upper surface of the pad body 1. The legs of the magnetic core 3 are placed in the placement grooves 2, and the pad body 1 and the magnetic core 3 are sintered together. The placement grooves 2 can effectively prevent the legs of the magnetic core 3 from deforming.
[0028] Specifically, the depth of the placement slot 2 is 0.5mm.
[0029] Specifically, the material of the gasket body 1 is the same as that of the magnetic core 3.
[0030] By adopting the above technical solution, it is ensured that the gasket body 1 and the magnetic core 3 can shrink synchronously and uniformly during sintering.
[0031] Specifically, the density of the gasket body 1 is equal to the density of the magnetic core 3.
[0032] By adopting the above technical solution, it is ensured that the gasket body 1 and the magnetic core 3 can shrink synchronously and uniformly during sintering.
[0033] Example 2
[0034] The difference between this embodiment and embodiment 1 is that, specifically, both long sides of the placement groove 2 are provided with draft angles. Each draft angle is 20°.
[0035] By adopting the above technical solution, it is convenient to assemble the magnetic core 3 with the pad body 1.
[0036] Example 3
[0037] The difference between this embodiment and embodiment 1 is that, specifically, the height h of the pad body 1 is equal to the thickness t of the back of the magnetic core 3.
[0038] By adopting the above technical solution, it is ensured that the gasket body 1 and the magnetic core 3 can shrink synchronously and uniformly during sintering.
[0039] Specifically, the distance w from the inner wall of the placement groove 2 to the side of the corresponding gasket body 1 is 5-10 mm. In this embodiment, 5 mm is preferred.
[0040] By adopting the above technical solution, it is ensured that the gasket body 1 and the magnetic core 3 can shrink synchronously and uniformly during sintering.
[0041] Example 4
[0042] The difference between this embodiment and embodiment 1 is that, specifically, for the E-type magnetic core, this utility model only needs to set three placement slots 2 corresponding to the legs of the E-type magnetic core on the top of the pad body 1.
[0043] In summary, this invention features a gasket body 1 with two placement grooves 2 on its upper surface corresponding to the legs of the magnetic core 3. The legs of the magnetic core 3 are placed in the placement grooves 2, and the gasket body 1 and magnetic core 3 are sintered together. The placement grooves 2 effectively prevent deformation of the legs of the magnetic core 3. The material of the gasket body 1 is the same as that of the magnetic core 3, and the density of the gasket body 1 is equal to that of the magnetic core 3, ensuring that the gasket body 1 and magnetic core 3 can shrink synchronously and uniformly during sintering, preventing deformation of the legs of the magnetic core 3. The two long sides of the placement grooves 2 are provided with draft angles to facilitate the assembly of the magnetic core 3 and the gasket body 1. The height h of the gasket body 1 is equal to the thickness t of the back of the magnetic core 3, and the distance w from the inner wall of the placement groove 2 to the corresponding side of the gasket body 1 is 5-10 mm, ensuring that the gasket body 1 and magnetic core 3 can shrink synchronously and uniformly during sintering, preventing deformation of the legs of the magnetic core 3.
[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A gasket for reducing sintering deformation of magnetic cores, characterized in that: It includes a gasket body, and the upper surface of the gasket body is provided with two placement grooves corresponding to the magnetic core legs. The length and width of the placement grooves are equal to the length and width of the end face of the magnetic core legs.
2. The gasket for reducing sintering deformation of magnetic cores according to claim 1, characterized in that: The depth of the placement groove is 0.5 mm.
3. The gasket for reducing sintering deformation of magnetic cores according to claim 1, characterized in that: The material of the gasket body is the same as that of the magnetic core.
4. A gasket for reducing sintering deformation of magnetic cores according to claim 1, characterized in that: The density of the gasket body is equal to the density of the magnetic core.
5. A gasket for reducing sintering deformation of magnetic cores according to claim 1, characterized in that: The placement groove has draft angles on both long sides.
6. A gasket for reducing sintering deformation of a magnetic core according to claim 5, characterized in that: The draft angle of a single specimen is 20°.
7. A gasket for reducing sintering deformation of magnetic cores according to claim 1, characterized in that: The height h of the pad body is equal to the thickness t of the back of the magnetic core.
8. A gasket for reducing sintering deformation of magnetic cores according to claim 1, characterized in that: The distance w from the inner wall of the placement groove to the side of the corresponding gasket body is 5-10mm.