Segmented magnetic core bonding positioning jig

Abstract

The utility model discloses a sectional type magnetic core bonding positioning fixture, including jig body, the inside of jig body is equipped with the inner chamber of through, be equipped with a plurality of corresponding overflow glue groove with the magnetic core air gap on the inner wall of inner chamber. The utility model discloses the inside of jig body is equipped with the inner chamber of through, and the jig body is sleeved on the middle column of magnetic core and is limited, avoids the shift of the magnetic sheet on the middle column of magnetic core in the process of bonding solidification to improve bonding accuracy and bonding yield. The utility model discloses corresponding overflow glue groove with the magnetic core air gap on the inner wall of inner chamber, is used to accommodate the overflowed glue in the solidification process, avoids the middle column bonding of jig body and magnetic core. The utility model discloses jig body is stainless steel material, realizes the recyclable utilization of jig body.

Description

Technical Field

[0001] This utility model belongs to the field of positioning fixture technology, specifically relating to a segmented magnetic core bonding positioning fixture. 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 structure of cores is becoming more and more diversified.

[0003] To meet performance requirements such as inductance and loss, many magnetic cores have multiple air gaps in the center column before bonding. Bonding requires heating to dry and cure the adhesive. During the heating process, the adhesive expands due to heat, which can easily cause the magnetic core to shift, resulting in bonding gaps and making the magnetic core unusable.

[0004] Therefore, there is an urgent need for a segmented magnetic core bonding and positioning fixture to improve the bonding accuracy and yield of magnetic cores. Utility Model Content

[0005] The purpose of this invention is to provide a segmented magnetic core bonding and positioning fixture to solve the problems mentioned in the background art. The segmented magnetic core bonding and positioning fixture provided by this invention has the characteristics of improving the bonding accuracy and yield of magnetic cores.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a segmented magnetic core bonding and positioning fixture, comprising a fixture body, the fixture body having a through-hole cavity inside, and the inner wall of the cavity having a plurality of overflow grooves corresponding to the air gap of the magnetic core.

[0007] Furthermore, in this invention, the width d of the overflow groove is 1mm.

[0008] Furthermore, in this invention, the depth h of the overflow groove is 0.5 mm.

[0009] To achieve recyclability of the fixture body, the fixture body is further made of stainless steel.

[0010] To ensure that the fixture body and the central column of the magnetic core do not interfere with each other, the inner diameter of the inner cavity is further 0.1 mm larger than the outer diameter of the central column of the magnetic core.

[0011] To ensure smooth assembly and prevent burrs on the fixture body from causing assembly failure, chamfers are further provided on the edges at both the top and bottom ends of the inner cavity. Chamfers are also provided on the edges at both the top and bottom ends of the fixture body.

[0012] To ensure smooth assembly and prevent the core of the magnetic core from being scratched by the body, the upper and lower sides of the glue overflow groove are provided with R-angles between them and the inner wall of the inner cavity.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The fixture body of this utility model has a through-hole cavity inside. The fixture body is fitted onto the central column of the magnetic core for positioning, which prevents the magnetic sheet on the central column of the magnetic core from shifting during the bonding and curing process, thereby improving the bonding accuracy and bonding yield.

[0015] 2. This utility model has an overflow groove on the inner wall of the inner cavity that corresponds to the air gap of the magnetic core, which is used to contain the glue overflowing during the curing process and prevent the fixture body from sticking to the central column of the magnetic core.

[0016] 3. The fixture body of this utility model is made of stainless steel, which enables the fixture body to be recycled.

[0017] 4. The inner diameter of the cavity of this utility model is 0.1mm larger than the outer diameter of the magnetic core column, ensuring that the fixture body and the magnetic core column will not interfere with each other.

[0018] 5. The jig body and the upper and lower edges of the inner cavity of this utility model are respectively provided with chamfers to ensure smooth assembly and prevent burrs on the jig body from causing assembly failure.

[0019] 6. The upper and lower sides of the overflow groove of this utility model are provided with R-angles between them and the inner wall of the inner cavity to ensure smooth assembly and prevent the body from scratching and damaging the central column of the magnetic core. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 3 This is a partial structural diagram of the glue overflow tank of this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of this utility model after it is combined with the magnetic core.

[0024] In the diagram: 1. Fixture body; 2. Inner cavity; 3. Glue overflow groove; 4. Chamfer; 5. R-angle; 6. Magnetic core. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] Please see Figures 1-4 This utility model provides the following technical solution: a segmented magnetic core bonding and positioning fixture, comprising a fixture body 1, wherein the fixture body 1 has a through-hole cavity 2, and the inner wall of the cavity 2 has three glue overflow grooves 3 corresponding to the air gap of the magnetic core, the width d of the glue overflow grooves 3 is 1mm, and the depth h of the glue overflow grooves 3 is 0.5mm.

[0028] By adopting the above technical solution, the fixture body 1 of this utility model has a through-hole cavity 2 inside, which limits the fixture body 1 when it is fitted onto the central column of the magnetic core 6, preventing the magnetic sheet on the central column of the magnetic core from shifting during the bonding and curing process, thereby improving the bonding accuracy and bonding yield. This utility model also has an overflow groove 3 on the inner wall of the cavity 2, corresponding to the air gap of the magnetic core, used to collect the overflowing glue during the curing process, preventing the fixture body 1 from bonding to the central column of the magnetic core.

[0029] Specifically, the jig body 1 is made of stainless steel.

[0030] By adopting the above technical solution, the jig body 1 can be recycled.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that, specifically, the inner diameter of the inner cavity 2 is 0.1 mm larger than the outer diameter of the central column of the magnetic core.

[0033] By adopting the above technical solution, it is ensured that the fixture body 1 and the central column of the magnetic core 6 will not interfere with each other.

[0034] Example 3

[0035] The difference between this embodiment and embodiment 1 is that, specifically, chamfers 4 are provided on the upper and lower edges of the fixture body 1 and the inner cavity 2.

[0036] By adopting the above technical solution, we can ensure smooth assembly and prevent burrs on the fixture body 1 from causing assembly failure.

[0037] Example 4

[0038] The difference between this embodiment and embodiment 1 is that, specifically, an R-angle 5 is provided between the upper and lower sides of the overflow groove 3 and the inner wall of the inner cavity 2.

[0039] By adopting the above technical solution, smooth assembly is ensured, so as to prevent the body 1 from scratching and damaging the central column of the magnetic core 6.

[0040] In summary, the fixture body 1 of this invention has a through-hole cavity 2 inside, which limits the position of the fixture body 1 on the central column of the magnetic core 6, preventing displacement of the magnetic sheet on the central column of the magnetic core during the bonding and curing process, thereby improving bonding accuracy and bonding yield. This invention also has an overflow groove 3 on the inner wall of the cavity 2, corresponding to the air gap of the magnetic core, to collect the overflowing glue during the curing process, preventing the fixture body 1 from bonding with the central column of the magnetic core. The fixture body 1 of this invention is made of stainless steel, enabling its recyclability. The inner diameter of the cavity 2 of this invention is 0.1mm larger than the outer diameter of the central column of the magnetic core, ensuring that the fixture body 1 and the central column of the magnetic core 6 will not interfere. The fixture body 1 and the upper and lower ends of the cavity 2 of this invention are respectively provided with chamfers 4 to ensure smooth assembly and prevent burrs on the fixture body 1 from causing assembly failure. The overflow groove 3 of this utility model has an R-angle 5 between its upper and lower sides and the inner wall of the inner cavity 2 to ensure smooth assembly and prevent the body 1 from scratching and damaging the central column of the magnetic core 6.

[0041] 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 segmented magnetic core bonding and positioning fixture, comprising a fixture body, characterized in that: The fixture body has a through-hole cavity inside, and the inner wall of the cavity has several overflow grooves corresponding to the air gap of the magnetic core.

2. The segmented magnetic core bonding and positioning fixture according to claim 1, characterized in that: The width d of the overflow groove is 1 mm.

3. The segmented magnetic core bonding and positioning fixture according to claim 1, characterized in that: The depth h of the overflow groove is 0.5 mm.

4. The segmented magnetic core bonding and positioning fixture according to claim 1, characterized in that: The fixture body is made of stainless steel.

5. A segmented magnetic core bonding and positioning fixture according to claim 1, characterized in that: The inner diameter of the cavity is 0.1 mm larger than the outer diameter of the column in the magnetic core.

6. The segmented magnetic core bonding and positioning fixture according to claim 1, characterized in that: The inner cavity has chamfered edges at both the top and bottom ends.

7. The segmented magnetic core bonding and positioning fixture according to claim 1, characterized in that: The jig body also has chamfers on the edges at both the top and bottom ends.

8. A segmented magnetic core bonding and positioning fixture according to claim 1, characterized in that: The overflow groove has rounded corners between its upper and lower sides and the inner wall of the cavity.

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