Air gap detection tool of Z-type magnetic bridge air gap magnetic core

Abstract

The utility model discloses an air gap detection tool for a Z-type magnetic bridge air gap magnetic core, which comprises a detection mechanism and a base, the detection mechanism comprises a guide groove arranged corresponding to the periphery of the magnetic core, the guide groove is sequentially provided with a first detection block and a second detection block along the length direction of the guide groove, the first detection block is two parallelogram blocks, and the second detection block is two parallelogram blocks. The size of the first detection block is the lower limit of the size of a Z-shaped magnetic bridge air gap, the second detection blocks are two parallelogram blocks, and the size of the second detection blocks is the upper limit of the size of the Z-shaped magnetic bridge air gap. An efficient, accurate and convenient detection mode is provided, and the quality reliability of the Z-shaped magnetic bridge magnetic core in the production process is ensured. The tool has high practical value in practical application, and is suitable for modern magnetic core manufacturing and quality control.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for magnetic core production, and in particular to an air gap detection tool for Z-type magnetic bridge air gap magnetic cores. Background Technology

[0002] A magnetic core is a component made of high-permeability metal strip and widely used in the magnetic circuit of current sensors; it is the core component of a current sensor. Air-gap magnetic cores are one type of magnetic core. For ordinary air-gap magnetic cores, the applicant previously applied for a magnetic core air-gap width detector (authorization announcement number CN218410989U), which includes an inclined slide plate with several detection blocks fixedly arranged at the bottom. The top of each detection block has a stepped detection end, including a first protrusion and a second protrusion. The width of the first protrusion is the lower limit of the opening width, and the width of the second protrusion is the upper limit of the opening width, used to detect the width of the air gap. In subsequent research, the applicant developed a Z-type magnetic bridge air-gap magnetic core. The aforementioned device cannot effectively detect the air gap of this type of magnetic core; therefore, a Z-type magnetic bridge air-gap magnetic core air-gap detection tool is proposed. Utility Model Content

[0003] Purpose of the Invention: The purpose of this invention is to provide an air gap detection tool for Z-type magnetic bridge air gap cores. This tool, through a rational design and incorporating components such as guide grooves, detection blocks, guide posts, and a base, provides an efficient, accurate, and convenient detection method, ensuring the reliability of Z-type magnetic bridge core quality during the production process. This tool has high practical value and is suitable for modern magnetic core manufacturing and quality control.

[0004] Technical solution:

[0005] An air gap detection tool for a Z-type magnetic bridge air gap core includes a detection mechanism and a base. The detection mechanism includes a guide groove corresponding to the outer periphery of the magnetic core. A first detection block and a second detection block are sequentially arranged along the length of the guide groove. The first detection block consists of two parallelogram blocks, and the size of the first detection block is the lower limit of the Z-type magnetic bridge air gap. The second detection block consists of two parallelogram blocks, and the size of the second detection block is the upper limit of the Z-type magnetic bridge air gap.

[0006] Preferably, the guide groove is inclined, and the side of the guide groove near the upper end along its length is open.

[0007] Preferably, the angle between the length direction of the guide groove and the horizontal plane is 30° to 60°.

[0008] Preferably, the first and second detection blocks for detecting the outer air gap are fixedly mounted on the side wall of the guide groove.

[0009] Preferably, a guide post is provided at the center of the guide groove corresponding to the magnetic core window. The size of the guide post is less than or equal to that of the magnetic core window. The first detection block and the second detection block for detecting the inner air gap are fixedly arranged on the side wall of the guide post.

[0010] Preferably, multiple detection mechanisms are provided along the length of the base for simultaneous detection.

[0011] Preferably, the size of the first detection block is 90% to 99% of the Z-shaped magnetic bridge air gap.

[0012] Preferably, the size of the second detection block is 101% to 110% of the Z-shaped magnetic bridge air gap.

[0013] Beneficial Effects: This Z-type magnetic bridge air gap core air gap detection tool, through its rational design and integration of components such as guide grooves, detection blocks, guide pillars, and a base, provides an efficient, accurate, and convenient detection method, ensuring the reliability of Z-type magnetic bridge core quality during the production process. This tool has high practical value in real-world applications and is suitable for modern magnetic core manufacturing and quality control.

[0014] Working principle: The inserted magnetic core passes through a first detection block and a second detection block to determine if the air gap is within the specified range. If it passes through the first detection block smoothly but fails to pass through the second detection block, the air gap meets the standard. If it fails to pass through the first detection block smoothly, the air gap of the magnetic core is smaller than the standard size. If it passes through both the first and second detection blocks, the air gap of the magnetic core is larger than the standard size. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a perspective view of the first working state of this utility model;

[0017] Figure 3 This is a perspective view of the second working state of this utility model;

[0018] Figure 4 This is a perspective view of the third working state of this utility model;

[0019] Figure 5 This is a structural diagram showing the location of the detection block in this utility model. Detailed Implementation

[0020] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] like Figure 1-5 As shown, an air gap detection tool for a Z-type magnetic bridge air gap core includes a detection mechanism and a base 4. The detection mechanism includes a guide groove 1 corresponding to the outer periphery of the magnetic core. A first detection block 2 and a second detection block 3 are sequentially arranged along the length of the guide groove 1. The first detection block 2 consists of two parallelogram blocks, and its size represents the lower limit of the Z-type magnetic bridge air gap. The second detection block 3 consists of two parallelogram blocks, and its size represents the upper limit of the Z-type magnetic bridge air gap. The guide groove is correspondingly arranged to the outer periphery of the Z-type magnetic bridge core and is mainly used to guide the detection blocks into the air gap region. The first and second detection blocks are parallelograms, including squares, and are arranged according to the structure of the magnetic core, magnetic bridge, and air gap.

[0023] In this embodiment, the guide groove 1 is inclined, and the side of the guide groove near the upper end along its length is open. The guide groove 1 is inclined, and the side near the upper end has an opening, which facilitates the insertion and removal of the detection block, and also allows the operator to observe it.

[0024] In this embodiment, the angle between the length direction of the guide groove 1 and the horizontal plane is 30° to 60°. This helps to improve the convenience and accuracy of operation.

[0025] In this embodiment, the first detection block 2 and the second detection block 3 for detecting the outer air gap are fixedly disposed on the side wall of the guide groove 1.

[0026] In this embodiment, a guide post 5 is provided at the center of the guide groove 1 corresponding to the core window. The size of the guide post is less than or equal to that of the core window. The first detection block 2 and the second detection block 3, used to detect the inner air gap, are fixedly mounted on the side wall of the guide post 5. They serve the same function as the guide groove, guiding the Z-shaped magnetic bridge core.

[0027] In this embodiment, multiple detection mechanisms are arranged along the length of the base 4, which can simultaneously detect multiple Z-shaped magnetic bridge air gap cores, thereby improving detection efficiency.

[0028] Understandably, in practice, it is impossible to produce magnetic core air gaps that perfectly match the wire dimensions, so a qualified range needs to be defined. In this embodiment, the size of the first detection block 2 is 90% to 99% of the Z-shaped magnetic bridge air gap, and cannot be equal to 100%, otherwise the magnetic core 6 will have difficulty passing through.

[0029] In this embodiment, the size of the second detection block 3 is 101% to 110% of the Z-shaped magnetic bridge air gap.

[0030] Furthermore, the base can also be equipped with a rotating mechanism to facilitate the removal of the magnetic core after testing.

[0031] Working principle: The inserted magnetic core passes through a first detection block and a second detection block to determine if the air gap is within the specified range. If it passes through the first detection block smoothly but fails to pass through the second detection block, the air gap meets the standard. If it fails to pass through the first detection block smoothly, the air gap of the magnetic core is smaller than the standard size. If it passes through both the first and second detection blocks, the air gap of the magnetic core is larger than the standard size. Figure 2 This corresponds to the working state diagram where the air gap of the magnetic core is smaller than the standard size. Figure 3 This corresponds to the working state diagram where the air gap of the magnetic core is qualified. Figure 4 This corresponds to the working state diagram when the air gap of the magnetic core is larger than the standard size.

[0032] This Z-type magnetic bridge air gap core air gap testing tool, through its rational design and integration of guide grooves, testing blocks, guide posts, and a base, provides an efficient, accurate, and convenient testing method, ensuring the reliability of Z-type magnetic bridge core quality during the production process. This tool has high practical value and is suitable for modern magnetic core manufacturing and quality control.

[0033] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A tool for detecting the air gap of a Z-type magnetic bridge air gap core, characterized in that: The device includes a detection mechanism and a base (4). The detection mechanism includes a guide groove (1) corresponding to the outer periphery of the magnetic core. The guide groove (1) is provided with a first detection block (2) and a second detection block (3) in sequence along its length. The first detection block (2) is two parallelogram blocks. The size of the first detection block (2) is the lower limit of the size of the Z-type magnetic bridge air gap. The second detection block (3) is two parallelogram blocks. The size of the second detection block (3) is the upper limit of the size of the Z-type magnetic bridge air gap.

2. The air gap detection tool for a Z-type magnetic bridge air gap core according to claim 1, characterized in that: The guide groove (1) is inclined, and the side of the guide groove near the upper end along its length is open.

3. The air gap detection tool for a Z-type magnetic bridge air gap core according to claim 2, characterized in that: The angle between the length direction of the guide groove (1) and the horizontal plane is 30° to 60°.

4. The air gap detection tool for a Z-type magnetic bridge air gap core according to claim 1, characterized in that: The first detection block (2) and the second detection block (3) used to detect the outer air gap are fixedly installed on the side wall of the guide groove (1).

5. The air gap detection tool for a Z-type magnetic bridge air gap core according to claim 1, characterized in that: The center of the guide groove (1) is provided with a guide post (5) corresponding to the magnetic core window. The size of the guide post is less than or equal to the magnetic core window. The first detection block (2) and the second detection block (3) used to detect the inner air gap are fixedly set on the side wall of the guide post (5).

6. The air gap detection tool for a Z-type magnetic bridge air gap core according to claim 1, characterized in that: Multiple detection mechanisms are provided along the length of the base (4) for simultaneous detection.

7. The air gap detection tool for a Z-type magnetic bridge air gap core according to claim 1, characterized in that: The size of the first detection block (2) is 90% to 99% of the air gap of the Z-type magnetic bridge.

8. The air gap detection tool for a Z-type magnetic bridge air gap core according to claim 1, characterized in that: The size of the second detection block (3) is 101% to 110% of the Z-type magnetic bridge air gap.

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