Magnetic ring structure

Abstract

The utility model discloses a magnetic ring structure which comprises a magnetic ring body arranged on the side face of a sensor, the sensor is parallel to the axial direction of the magnetic ring body, a chamfer is arranged on the edge of the magnetic ring body, and a magnetic ring accessory is installed in an installation groove of the magnetic ring body through a connecting mechanism. According to the utility model, the structural design is scientific and reasonable, the two chamfers are arranged on the side surface of the radially magnetized magnetic ring body, and the angles of the chamfers can enable the magnetic field direction of the magnetic ring body to have more components in the X and Y directions of the sensor plane, so that the sensor can feel more X and Y magnetic fields; after the magnetic ring is magnetized in the radial direction, the magnetic field intensity in the X direction and the Y direction on a large plane can also be generated on the sensor which is axially placed in parallel with the magnetic ring, the placing range of the sensor for sensing an effective magnetic field is expanded, the flexibility of placing the sensor on a PCBA (Printed Circuit Board Assembly) is facilitated, the lower-grade magnetic ring can be used, the assembly is facilitated, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic ring equipment, and particularly relates to a magnetic ring structure. Background Technique

[0002] During the off-axis application of the existing 360° angle sensor, generally the sensor is perpendicular to the axial direction of the magnetic ring. At this time, the sensor can sense that the magnetic field intensities in the X and Y directions are very high, so that the angle deviation of the sensor is small. However, there is an off-axis sensor application that requires the sensor to be parallel to the axial direction of the magnetic ring. In this case, if the magnet magnetic field is radially magnetized, it will cause the sensor to feel that the effective magnetic field intensities in the X and Y directions are not high, and it will also cause a large angle deviation. At the same time, the position range where the sensor can sense the effective magnetic field is very narrow. For this reason, we propose a magnetic ring structure. Content of the Utility Model

[0003] The purpose of the utility model is to provide a magnetic ring structure to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: A magnetic ring structure includes a magnetic ring body arranged on the side of the sensor. The sensor is parallel to the axial direction of the magnetic ring body. A chamfer is arranged at the edge of the magnetic ring body. A magnetic ring accessory is installed in the installation groove of the magnetic ring body through a connection mechanism.

[0005] In the above scheme, the magnetic ring body is a cylindrical injection-molded ferrite.

[0006] In the above scheme, the angle of the chamfer is 30 - 60 degrees.

[0007] In the above scheme, the connection mechanism includes a clamping block arranged on the outer side of the magnetic ring accessory. The clamping block is slidably clamped in the movable channel on the inner side of the magnetic ring body.

[0008] In the above scheme, the thicknesses of the magnetic ring body and the magnetic ring accessory are the same.

[0009] In the above scheme, a positioning hole is opened at the bottom of the magnetic ring accessory.

[0010] In the above scheme, the outer wall of the magnetic ring accessory is closely attached to the inner wall of the magnetic ring body.

[0011] Compared with the prior art, the beneficial effects of the utility model are: The magnetic ring structure has a simple and reasonable structural design and strong practicability. Two chamfers are arranged on the side of the radially magnetized magnetic ring body. The angle of this chamfer can make the magnetic field direction of the magnetic ring body have more components in the X and Y directions of the sensor plane, so that the sensor can sense more magnetic fields in the X and Y directions;

[0012] After the magnetic ring is radially magnetized, a relatively large magnetic field intensity in the X and Y directions on the plane can also be generated on the sensor placed parallel to the axial direction of the magnetic ring, expanding the placement range of the effective magnetic field it senses. This not only facilitates the flexibility of placing the sensor on the PCBA board but also allows the use of lower-grade magnetic rings, which is convenient for assembly and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present utility model.

[0014] Figure 2 It is a schematic diagram of the internal structure of the magnetic ring body of the present utility model.

[0015] Figure 3 It is a schematic diagram of the internal structure of the magnetic ring body of the present utility model.

[0016] In the figure: 1, magnetic ring body; 2, sensor; 3, chamfer; 4, installation groove; 5, magnetic ring accessory; 6, clamping block; 7, movable channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-3 , the present utility model provides a technical solution: a magnetic ring structure, including a magnetic ring body 1 arranged on the side of a sensor 2, the sensor 2 being parallel to the axial direction of the magnetic ring body 1, a chamfer 3 being arranged at the edge of the magnetic ring body 1, and a magnetic ring accessory 5 being installed in the installation groove 4 of the magnetic ring body 1 through a connection mechanism.

[0019] In the above solution, the magnetic ring body 1 is a cylindrical injection-molded ferrite.

[0020] In the above solution, the angle of the chamfer 3 is 30 - 60 degrees. Further, the specific angle of the chamfer 3 can be adjusted according to the use requirements.

[0021] Two chamfers 3 are machined on the side of the radially magnetized magnetic ring body 1, and the angle of this chamfer 3 can make the components of the magnetic field direction of the magnetic ring body 1 in the X and Y directions on the plane of the sensor 2 more, so that the sensor 2 can sense more magnetic fields in the X and Y directions;

[0022] After the magnetic ring body 1 is radially magnetized, a magnetic field intensity in the X and Y directions on a relatively large plane can also be generated on the sensor 2 placed parallel to the axis of the magnetic ring body 1, expanding the placement range for it to sense the effective magnetic field. This not only facilitates the flexibility of placing the sensor 2 on the PCBA board, but also allows the use of lower-grade magnetic rings, facilitating assembly and saving costs.

[0023] In the above solution, the connecting mechanism includes a clamping block 6 arranged on the outer side of the magnetic ring accessory 5, and the clamping block 6 is slidably clamped in the movable channel 7 inside the magnetic ring body 1. Specifically, the clamping block 6 can move within the movable channel 7, so that the magnetic ring accessory 5 can rotate to a certain extent within the installation groove 4, thereby facilitating the adjustment of the device.

[0024] In the above solution, the magnetic ring body 1 and the magnetic ring accessory 5 have the same thickness.

[0025] In the above solution, a positioning hole is provided at the bottom of the magnetic ring accessory 5. The design of the positioning hole facilitates the installation of the magnetic ring accessory 5.

[0026] In the above solution, the outer wall of the magnetic ring accessory 5 is in close fit with the inner wall of the magnetic ring body 1.

[0027] Working principle:

[0028] For this kind of magnetic ring structure, two chamfers 3 are machined on the side of the radially magnetized magnetic ring body 1. The angle of these chamfers 3 can make the components of the magnetic field direction of the magnetic ring body 1 in the X and Y directions on the plane of the sensor 2 more, enabling the sensor 2 to sense more magnetic fields in the X and Y directions;

[0029] After the magnetic ring body 1 is radially magnetized, a magnetic field intensity in the X and Y directions on a relatively large plane can also be generated on the sensor 2 placed parallel to the axis of the magnetic ring body 1, expanding the placement range for it to sense the effective magnetic field. This not only facilitates the flexibility of placing the sensor 2 on the PCBA board, but also allows the use of lower-grade magnetic rings, facilitating assembly and saving costs.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic ring structure, comprising a magnetic ring body (1) arranged on the side of a sensor (2), characterized in that: The sensor (2) is parallel to the axial direction of the magnetic ring body (1); a chamfer (3) is provided at the edge of the magnetic ring body (1); and a magnetic ring accessory (5) is installed in the installation groove (4) of the magnetic ring body (1) via a connecting mechanism.

2. A magnetic ring structure according to claim 1, characterized in that: The magnetic ring body (1) is a cylindrical injection-molded ferrite.

3. A magnetic ring structure according to claim 1, characterized in that: The angle of the chamfer (3) is 30-60 degrees.

4. A magnetic ring structure according to claim 1, characterized in that: The connection mechanism comprises a clamping block (6) arranged on the outside of the magnetic ring attachment (5), and the clamping block (6) can be slidably clamped in a movable channel (7) on the inside of the magnetic ring body (1).

5. A magnetic ring structure according to claim 1, characterized in that: The magnetic ring body (1) and the magnetic ring attachment (5) have the same thickness.

6. A magnetic ring structure according to claim 1, characterized in that: A positioning hole is provided at the bottom of the magnetic ring attachment (5).

7. A magnetic ring structure according to claim 1, characterized in that: The outer wall of the magnetic ring attachment (5) is tightly fitted to the inner wall of the magnetic ring body (1).

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