Protective magnetic core testing fixture
By incorporating legs and sliding components into the magnetic core inspection fixture, contact between the magnetic core and the table is avoided, thus solving the problem of surface damage caused by friction during magnetic core inspection, reducing the scrap rate, and improving the stability and efficiency of the inspection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN AONA-HERO MAGNETIC TECH CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-05-08
AI Technical Summary
Existing magnetic core inspection tools lack protective features, causing the magnetic core to rub against the table during the inspection process, resulting in external damage and increasing the scrap rate.
A protective magnetic core inspection fixture was designed. The fixture height is increased by setting support legs. The structure of placement groove, mounting platform and drop groove ensures that the magnetic core does not come into contact with the table during the inspection. Sliding components and suction cups are used for fixation to avoid friction damage.
This effectively avoids damage to the magnetic core caused by friction during the testing process, reduces the scrap rate, and improves the stability and efficiency of the testing.
Smart Images

Figure CN224216008U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of magnetic core inspection tools, and more particularly to protective magnetic core inspection tools. Background Technology
[0002] Magnetic core inspection fixtures are specialized testing equipment used to inspect the dimensional accuracy of magnetic materials. They can quickly identify product defects through automated or manual methods, ensuring that the magnetic cores meet design standards. They are mainly used in the electronic component manufacturing, power equipment, and communications industries to ensure product quality stability.
[0003] Existing magnetic core inspection tools lack protective features. Without these features, the magnetic core may rub or bump against the table multiple times when being moved during inspection, leading to an increased scrap rate.
[0004] Therefore, in view of the problem that the existing magnetic core inspection fixtures lack protective functions, and the magnetic cores are damaged due to friction with the tabletop, resulting in an increased scrap rate, there is an urgent need to design a new type of protective magnetic core inspection fixture. Utility Model Content
[0005] To overcome the problem that existing magnetic core inspection tools lack protective functions, causing damage to the appearance of the magnetic core due to friction with the desktop, thus increasing the scrap rate.
[0006] The technical solution of this utility model is as follows: a protective magnetic core gauge, including an outer diameter gauge; it also includes a placement groove, an installation platform, a drop groove, support legs, and an inner diameter gauge. The outer diameter gauge has a placement groove in the middle of both its left and right sides. An installation platform is installed on the lower inner side of the outer diameter gauge. A drop groove is opened through the middle of the upper surface of the installation platform. Support legs are installed on the front and rear sides of the lower surface of the outer diameter gauge. A sliding component is provided between the two support legs. The inner diameter gauge is provided on the upper surface of the sliding component.
[0007] Preferably, by setting up support legs, the overall height of the outer diameter gauge is increased. Workers can easily insert the magnetic core into the outer diameter gauge through the placement slot. Then, by setting up an installation platform to block the magnetic core, and finally by opening a drop slot, after the magnetic core is placed, the inner diameter gauge is inserted into the magnetic core. Under the action of gravity, the inner diameter gauge passes through the drop slot and falls between the two support legs. This achieves the purpose of preventing the magnetic core from moving on the table during the test and being damaged. This solves the problem that the existing magnetic core gauge lacks protective function. Without protective function, the magnetic core may come into contact with the table and rub against it, causing damage to the appearance and thus increasing the scrap rate.
[0008] Preferably, the sliding assembly includes a sliding groove, a slider, and a base plate; a sliding groove is provided through the lower side of the front surface of each of the two legs, a slider is slidably connected inside the two sliding grooves, and a base plate is connected between the two sliders, with the upper surface of the base plate in contact with the lower surface of the inner diameter gauge.
[0009] Preferably, one end of a spring is connected to the inner right surface of the front sliding groove, and the other end of the spring is connected to the right surface of the front slider. A limit rod is provided on the inner right surface of the rear sliding groove, the limit rod passes through the rear slider, and the limit rod is slidably connected to the rear slider.
[0010] Preferably, a handle is provided on the front surface of the front slider, and the handle is fixed to the front slider by welding.
[0011] Preferably, the outer surface of the handle is covered with an anti-slip pad.
[0012] Preferably, a baffle is provided on the right surface of the base plate, and the baffle is fixed to the base plate by welding.
[0013] Preferably, connecting seats are provided on both the left and right sides of the lower surface of the two legs, and suction cups are installed on the lower surface of the connecting seats.
[0014] The beneficial effects of this utility model are:
[0015] 1. By setting up support legs, the support legs raise the reference height of the outer diameter gauge. The operator can easily embed the magnetic core into the outer diameter gauge cavity vertically through the placement slot. The installation platform forms a physical limiting barrier at the end of the magnetic core embedding path. After the magnetic core is fixed in the outer diameter detection station, the operator inserts the inner diameter gauge along the axis of the magnetic core's central hole. Driven by its own weight, the inner diameter gauge passes through the preset drop groove channel and finally falls vertically between the two support legs. This achieves the purpose of preventing the magnetic core from moving on the table during the test and being damaged. This solves the problem that the existing magnetic core gauge lacks protection. Without protection, the magnetic core may come into contact with the table and rub against it, causing damage to the appearance and thus increasing the scrap rate. Attached Figure Description
[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the protective magnetic core inspection tool of this utility model;
[0017] Figure 2 The diagram shown is a structural schematic of the outer diameter gauge of the protective magnetic core gauge of this utility model.
[0018] Figure 3 The diagram shown is a schematic representation of the support leg structure of the protective magnetic core inspection tool of this utility model.
[0019] Figure 4The diagram shown is a schematic diagram of the sliding groove structure of the protective magnetic core gauge of this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1. Outer diameter gauge; 2. Placement groove; 3. Mounting platform; 4. Drop groove; 5. Support leg; 601. Sliding groove; 602. Slider; 603. Base plate; 7. Inner diameter gauge; 8. Spring; 9. Limiting rod; 10. Handle; 11. Anti-slip pad; 12. Baffle; 13. Connecting seat; 14. Suction cup. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Please see Figures 1-4 This utility model provides an embodiment of a protective magnetic core gauge, including an outer diameter gauge 1; it also includes a placement groove 2, a mounting platform 3, a drop groove 4, support legs 5, and an inner diameter gauge 7. Placement grooves 2 are provided in the middle of both the left and right sides of the outer diameter gauge 1. The mounting platform 3 is installed on the lower inner side of the outer diameter gauge 1. A drop groove 4 is provided through the middle of the upper surface of the mounting platform 3. Support legs 5 are installed on the front and rear sides of the lower surface of the outer diameter gauge 1, near the edges. A sliding assembly is provided between the two support legs 5, and the upper surface of the sliding assembly is provided with an inner diameter gauge. The gauge 7, by setting the support legs 5, raises the overall height of the outer diameter gauge 1. The operator can easily insert the magnetic core into the outer diameter gauge 1 through the placement slot 2. Then, the installation platform 3 is set to block the magnetic core. Finally, by opening the drop slot 4, after the magnetic core is placed, the inner diameter gauge 7 is inserted into the magnetic core. The inner diameter gauge 7 will pass through the drop slot 4 and fall between the two support legs 5 under the action of gravity. This achieves the purpose of preventing the magnetic core from moving on the table and being damaged during the test.
[0023] Please see Figures 1-4In this embodiment, the sliding assembly includes a sliding groove 601, a slider 602, and a base plate 603. A sliding groove 601 is provided through the lower side of the front surface of each of the two support legs 5. A slider 602 is slidably connected inside each of the two sliding grooves 601. A base plate 603 is connected between the two sliders 602. The upper surface of the base plate 603 is in contact with the lower surface of the inner diameter gauge 7. A baffle 12 is provided to catch any falling inner diameter gauge 7. Since the baffle 12 can slide via the sliders 602 on both sides, the operator can slide the sliders 602 to move the baffle 12 and send the inner diameter gauge 7 out, thus facilitating the operator's work. One end of a spring 8 is connected to the inner right surface of the front sliding groove 601, and the other end of the spring 8 is connected to the right surface of the front slider 602. A limiting device is provided on the inner right surface of the rear sliding groove 601. The positioning rod 9 passes through the rear slider 602 and is slidably connected to it. A spring 8 is provided; when the operator extends the baffle 12, the spring 8 is stretched and continuously exerts a retracting force. When the operator releases their grip and the front slider 602 is no longer in its restricted position, the front slider 602 is pulled back to its original position by the retracting force of the spring 8. The positioning rod 9 further restricts the freedom of the rear slider 602, preventing the baffle 12 from tilting during movement, thus achieving the goal of automatic rebound of the extended baffle 12. A handle 10 is provided on the front surface of the front slider 602, and the handle 10 is welded to it. The handle 10 provides a gripping point for the operator when moving the front slider 602, making it easier to move and improving work efficiency.
[0024] Please see Figures 1-4 In this embodiment, the outer surface of the handle 10 is covered with an anti-slip pad 11. By setting the anti-slip pad 11, the contact friction can be increased when the operator pushes the handle 10, avoiding slippage and thus reducing the error rate. A baffle 12 is set on the right surface of the base plate 603. The baffle 12 is fixed to the base plate 603 by welding. By setting the baffle 12, the inner diameter gauge 7 can be prevented from rolling backward when it falls, and the inner diameter gauge 7 can be prevented from rolling backward when the base plate 603 moves too fast, thus improving the stability of the device. Connecting seats 13 are set on the left and right sides of the lower surface of the two legs 5. Suction cups 14 are installed on the lower surface of the connecting seats 13. By setting the suction cups 14, the legs 5 can be firmly connected to the tabletop, so that the magnetic core gauge will not be displaced when the operator pushes the handle 10.
[0025] During operation, the baffle 12 catches the falling inner diameter gauge 7. Since the baffle 12 can slide via the sliders 602 on both sides, the operator can slide the sliders 602 to move the baffle 12 and send out the inner diameter gauge 7, thus facilitating the operator's work. A spring 8 is provided; when the operator sends out the baffle 12, the spring 8, being stretched, continuously exerts a retracting force. When the operator releases their grip and is no longer in the restricted position of the front slider 602, the front slider 602 is brought back to its original position by the retracting force of the spring 8. Furthermore, a limiting rod 9 restricts the freedom of the rear slider 602, thus preventing the baffle 12 from tilting during movement, achieving the goal of automatic rebound after the baffle 12 is sent out. By setting the handle 10, the operator has a gripping point when moving the front slider 602, making it easier to move the front slider 602 and thus improving work efficiency. By setting the anti-slip pad 11, the operator can increase the contact friction when pushing the handle 10, preventing slippage and thus reducing the error rate. By setting the baffle 12, the operator can prevent the inner diameter gauge 7 from rolling backward when it falls, and from rolling backward when the base plate 603 moves too fast, thus improving the stability of the device. By setting the suction cup 14, the operator can firmly connect the support leg 5 to the tabletop, preventing the magnetic core gauge from shifting when the operator pushes the handle 10.
[0026] Through the above steps, by setting support legs 5, the support legs 5 raise the reference height of the outer diameter gauge 1. The operator can conveniently embed the magnetic core into the cavity of the outer diameter gauge 1 vertically through the placement groove 2. The installation platform 3 forms a physical limiting barrier at the end of the magnetic core embedding path. After the magnetic core is fixed at the outer diameter detection station, the operator inserts the inner diameter gauge 7 along the axis of the magnetic core's central hole. Driven by its own weight, the inner diameter gauge 7 passes through the preset drop groove 4 channel and finally falls vertically between the two support legs 5. This achieves the purpose of preventing the magnetic core from being moved on the table during the test and being damaged. This solves the problem that the existing magnetic core gauges lack protective functions. Without protective functions, the magnetic core may come into contact with the table and rub against it, causing damage to the appearance and thus increasing the scrap rate.
Claims
1. A protective magnetic core gauge, comprising an outer diameter gauge (1); characterized in that: It also includes a placement slot (2), an installation platform (3), a drop trough (4), support legs (5), and an inner diameter gauge (7). The middle of the left and right sides of the outer diameter gauge (1) is provided with a placement slot (2). The lower inside of the outer diameter gauge (1) is provided with an installation platform (3). The middle of the upper surface of the installation platform (3) is provided with a drop trough (4). Support legs (5) are provided on the front and rear sides of the lower surface of the outer diameter gauge (1). A sliding component is provided between the two support legs (5). The upper surface of the sliding component is provided with an inner diameter gauge (7).
2. The protective magnetic core inspection tool according to claim 1, characterized in that: The sliding assembly includes a sliding groove (601), a slider (602), and a base plate (603); the lower side of the front surface of each of the two legs (5) is provided with a sliding groove (601), and the slider (602) is slidably connected inside the two sliding grooves (601). The base plate (603) is connected between the two sliders (602), and the upper surface of the base plate (603) is in contact with the lower surface of the inner diameter gauge (7).
3. The protective magnetic core inspection tool according to claim 2, characterized in that: One end of a spring (8) is connected to the inner right surface of the front sliding groove (601), and the other end of the spring (8) is connected to the right surface of the front slider (602). A limit rod (9) is provided on the inner right surface of the rear sliding groove (601). The limit rod (9) passes through the rear slider (602) and is slidably connected to the rear slider (602).
4. The protective magnetic core inspection tool according to claim 2, characterized in that: A handle (10) is provided on the front surface of the front slider (602), and the handle (10) is fixed to the front slider (602) by welding.
5. The protective magnetic core inspection fixture according to claim 4, characterized in that: The outer surface of the handle (10) is covered with an anti-slip pad (11).
6. The protective magnetic core inspection tool according to claim 2, characterized in that: A baffle (12) is provided on the right surface of the base plate (603), and the baffle (12) is fixed to the base plate (603) by welding.
7. The protective magnetic core inspection tool according to claim 1, characterized in that: Connecting seats (13) are provided on the left and right sides of the lower surface of the two legs (5), and suction cups (14) are installed on the lower surface of the connecting seats (13).