Concentric circle plane magnet magnetic flux detection device

Abstract

The utility model relates to the technical field of electronic equipment detection, in particular to a concentric circle plane magnet magnetic flux detection device, which comprises a protective shell and a detection coil, an installation cavity is arranged in the protective shell, a connecting part is arranged on one side of the protective shell in a protruding manner, and the connecting part is communicated with the installation cavity; the detection coil is spirally wound from the end face, facing the connecting part, of the protective shell to the side, away from the connecting part, of the mounting cavity, the detection coil comprises an outer coil and an inner coil, one end of the outer coil is connected to the connecting part, and the ends of the outer coil and the inner coil are both communicated with the connecting part; and the coil winding directions of the outer coil and the inner coil are opposite. The utility model aims to improve the detection precision of the magnetic flux of the concentric plane magnet.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment detection, in particular to a concentric circular planar magnet magnetic flux detection device. Background Art

[0002] Concentric planar dipole magnets are a type of magnet widely used in various permanent magnet adsorption applications, including mobile phones, toys, and various consumer electronic products. When testing the magnetic properties of such magnets, the detection device typically uses a Gaussmeter to measure the magnet density at a local point for evaluation. However, if the magnet is a spliced ​​magnetic ring and some of the spliced ​​blocks have high magnetic flux density, this can easily lead to inaccurate testing. Therefore, a new structure is needed to improve the accuracy of magnetic flux detection for concentric planar magnets. Utility Model Content

[0003] The main purpose of the utility model is to provide a concentric planar magnet magnetic flux detection device, aiming to improve the detection accuracy of the concentric planar magnet magnetic flux.

[0004] To achieve the above-mentioned purpose, the present invention proposes a concentric planar magnet magnetic flux detection device, comprising a protective shell and a detection coil:

[0005] A mounting cavity is provided in the protective shell, and a connecting portion is protruded from one side of the protective shell, and the connecting portion is connected to the mounting cavity;

[0006] The detection coil is spirally wound from the protective shell toward the end face of the connecting part to the side of the installation cavity away from the connecting part. The detection coil includes an outer coil and an inner coil. One end of the outer coil is connected to the connecting part, and the ends of the outer coil and the inner coil are both connected to the connecting part. The coils of the outer coil and the inner coil are wound in opposite directions.

[0007] In one embodiment of the present application, the outer coil and the inner coil are connected in series, the outer coil is provided with a winding turning end facing the inner coil, a conversion part is provided between the outer coil and the inner coil, and the winding turning end is connected to the conversion part.

[0008] In one embodiment of the present application, an outer wall of the protective shell is provided with an alignment groove relative to the conversion portion, and the alignment groove is in a circular ring shape.

[0009] In one embodiment of the present application, the detection coil is made of a multi-layer PCB in the shape of a multi-layer PCB coil.

[0010] In one embodiment of the present application, a flux meter is connected to one end of the connecting portion facing away from the protective shell, and the flux meter is connected to lead wires of the outer coil and the inner coil.

[0011] By adopting the above technical solution, the utility model has the following advantages:

[0012] 1. The structure of concentric planar magnets is generally a circular ring structure, and the inner and outer ring magnetic poles are opposite, and there is a normal zero Gauss line between the inner and outer rings. In order to improve the test accuracy, the detection coil is divided into an outer coil and an inner coil. The two coils are wound in opposite directions and can correspond to one pole of the magnet respectively. In conjunction with a fluxmeter, the relative magnetic flux of the concentric planar two-pole magnet can be compared. The fluxmeter is connected to the inner and outer coils to improve the test accuracy of the relative full magnetic flux value of the magnet through comparison, which can be used for magnetic performance evaluation of magnetic rings.

[0013] 2. The protective shell and the connection part are integrally formed, and the installation cavity is opened inside. The detection coil is installed through the installation cavity, which can be protected by the protective shell. At the same time, it is convenient to connect the cable led out of the connection part to the lead wire of the detection coil, so that the detection device is conveniently connected to the fluxmeter, making the equipment work more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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 the structures shown in these drawings without paying any creative work.

[0015] Figure 1 This is a structural schematic diagram of a concentric planar magnet magnetic flux detection device of the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of a concentric circular planar magnet magnetic flux detection device of the present invention;

[0017] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0018] Description of Figure Numbers:

[0019] 1. Protective shell; 11. Mounting cavity; 12. Alignment groove; 2. Connecting part; 3. Detection coil; 31. Outer coil; 32. Winding turning end; 33. Conversion part; 34. Inner coil.

[0020] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0022] Reference Figures 1 to 3 To achieve the above-mentioned purpose, the utility model proposes a concentric planar magnet magnetic flux detection device, comprising a protective shell 1 and a detection coil 3, wherein the protective shell 1 is provided with a mounting cavity 11, and a connecting portion 2 is protruding from one side of the protective shell 1, and the connecting portion 2 is connected to the mounting cavity 11; the detection coil 3 is spirally wound from the end face of the protective shell 1 toward the connecting portion 2 to the side of the mounting cavity 11 away from the connecting portion 2, and the detection coil 3 includes an outer coil 31 and an inner coil 34, one end of the outer coil 31 is connected to the connecting portion 2, and the ends of the outer coil 31 and the inner coil 34 are both connected to the connecting portion 2, and the outer coil 31 and the inner coil 34 are wound in opposite directions.

[0023] The structure of a concentric planar magnet is generally a circular ring structure, and the inner ring magnetic pole is opposite to the outer ring magnetic pole, and there is a normal zero Gauss line between the inner and outer rings. In order to improve the test accuracy, the detection coil 3 is divided into an outer coil 31 and an inner coil 34. The two coils are wound in opposite directions and can correspond to one pole of the magnet respectively. In conjunction with a fluxmeter, the relative magnetic flux of the concentric planar two-pole magnet can be compared and measured. The fluxmeter is connected to the inner coil 34 and the outer coil 31 to improve the test accuracy of the relative full magnetic flux value of the magnet through comparison, which can be used for the magnetic performance evaluation of the magnetic ring.

[0024] The protective shell 1 and the connecting part 2 are integrally formed, and the installation cavity 11 is opened inside. The detection coil 3 is installed through the installation cavity 11, and the protective shell 1 can be used for protection. At the same time, it is convenient for the cable led out of the connecting part 2 to be connected to the lead wire of the detection coil 3, which facilitates the connection of the detection device to the fluxmeter, making the equipment work more stably.

[0025] See also Figures 2 to 3 In one embodiment of the present application, the outer coil 31 and the inner coil 34 are connected in series, the outer coil 31 is provided with a winding turning end 32 facing the inner coil 34, a conversion part 33 is provided between the outer coil 31 and the inner coil 34, and the winding turning end 32 is connected to the conversion part 33.

[0026] The inner and outer coils 31 are connected in series, so the fluxmeter only needs to connect one end of the outer coil 31 and the other end of the inner coil 34 away from the connection part 2 to complete the connection detection device and make it work normally. The connection between the inner and outer coils 31 is connected by the winding turning end 32. The conversion part 33 can be positioned through the winding turning end 32. The conversion part 33 can correspond to the position of the normal zero Gauss line of the concentric planar magnet, making the test more accurate.

[0027] See also Figure 1 In one embodiment of the present application, an outer wall of the protective shell 1 is provided with an alignment groove 12 relative to the conversion portion 33, and the alignment groove 12 is in a circular shape.

[0028] By providing an alignment groove 12 on the protective shell 1 corresponding to the conversion portion 33, the normal zero Gaussian line of the magnet can be placed at a specified position, and the two magnetic poles of the magnet can be respectively aligned with the inner and outer coils 31, thereby improving the test accuracy.

[0029] See also Figures 1 to 3 In one embodiment of the present application, the detection coil 3 is made of a multi-layer PCB in the shape of a multi-layer PCB coil.

[0030] The use of a multi-layer PCB instead of a conventional coil can improve the stability of the test and make the detection device easier to use.

[0031] See also Figures 1 to 3 In one embodiment of the present application, a flux meter is connected to the end of the connecting portion 2 facing away from the protective shell 1 , and the flux meter is connected to the lead wires of the outer coil 31 and the inner coil 34 .

[0032] The connecting part 2 is used to connect the fluxmeter. The connecting line can be passed through the connecting part 2 and protected by the connecting part 2, thereby improving the stability of the test work of the entire device.

[0033] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A concentric planar magnet magnetic flux detection device, characterized in that: include: A protective shell, wherein a mounting cavity is provided in the protective shell, and a connecting portion is protruded from one side of the protective shell, the connecting portion being connected to the mounting cavity; The detection coil is spirally wound from the protective shell toward the end face of the connecting part to the side of the installation cavity away from the connecting part. The detection coil includes an outer coil and an inner coil. One end of the outer coil is connected to the connecting part. The ends of the outer coil and the inner coil are both connected to the connecting part. The outer coil and the inner coil are wound in opposite directions.

2. The concentric circular planar magnet magnetic flux detection device according to claim 1, characterized in that: The outer coil and the inner coil are connected in series, the outer coil is provided with a winding turning end facing the inner coil, a conversion part is provided between the outer coil and the inner coil, and the winding turning end is connected to the conversion part.

3. The concentric circular planar magnet magnetic flux detection device according to claim 2, characterized in that: An outer wall of the protective shell is provided with an alignment groove relative to the conversion portion, and the alignment groove is in a circular ring shape.

4. A concentric planar magnet magnetic flux detection device according to any one of claims 1 to 3, characterized in that: The detection coil is made of a multi-layer PCB and is in the shape of a multi-layer PCB coil.

5. A concentric circular planar magnet magnetic flux detection device according to any one of claims 1 to 3, characterized in that: One end of the connecting portion facing away from the protective shell is connected to a flux meter, and the flux meter is connected to the lead wires of the outer coil and the inner coil.

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