A bobbin for a magnetic field generating device

Abstract

The present invention discloses a winding tube for a magnetic field generating device, comprising a tube body, a plurality of annular grooves are evenly spaced on the tube wall of the tube body along the tube core direction, a straight groove parallel to the tube core is also formed on the tube wall of the tube body, the annular grooves are connected to each other through the straight grooves, a through hole is also formed on the tube wall of the tube body, a circular groove is formed on the outer periphery of the through hole, and the circular groove is connected to the adjacent annular grooves. By forming through holes and circular grooves on the tube body of the winding tube, when the wire is wound around the through hole during winding, it can bypass the circular groove on the outer periphery of the through hole, so that the wire avoids the through hole, effectively improving the light transmittance of the coil; the provision of the through hole also allows the coil to have a larger gap, which is convenient for taking and placing objects when conducting magnetic field experiments, and is also conducive to the transmission of models in the magnetic field.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic field, and in particular relates to a magnetic coil bobbin for a magnetic field generating device. Background Art

[0002] Solenoid coils use current to pass through the wire of the coil to generate a uniform magnetic field and are widely used in the field of electromagnetic technology.

[0003] Traditional solenoid coils generally wind the wire around a circular winding tube, which has poor light transmittance. In order to ensure the uniformity of the generated magnetic field, the spacing between the solenoid coils is small, which will hinder the signal transmission in the middle of the coil. Due to this winding method, only light holes can be opened in the spacing between the coils. However, the aperture of the light hole opened in this way will be affected by the pitch of the coil. Generally, the aperture is relatively small. Although it has a certain light transmittance and signal transmission capability, the effect is poor. Summary of the invention

[0004] The object of the present invention is to solve the above-mentioned problem and provide a bobbin which improves light transmittance and signal transmission capability under the condition of ensuring magnetic field uniformity.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is: a winding tube for a magnetic field generating device, including a tube body, a tube wall of the tube body is provided with a plurality of annular grooves evenly spaced along the direction of the tube core, the tube wall of the tube body is also provided with straight grooves parallel to the tube core, the annular grooves are connected to each other through the straight grooves, the tube wall of the tube body is also provided with a through hole, the outer periphery of the through hole is provided with a circular groove, and the circular groove is connected to the adjacent annular grooves.

[0006] Furthermore, the core of the through hole is located on the middle plane of two adjacent annular grooves, and the circular groove is arranged concentrically with the through hole.

[0007] Furthermore, the circular groove is connected to four adjacent annular grooves.

[0008] Furthermore, there are three through holes, the hole cores of the three through holes are located on the same plane and the plane is perpendicular to the tube core of the tube body, and three circular grooves are arranged corresponding to the through holes.

[0009] Furthermore, the three through holes are arranged in a right-angled isosceles triangle on the plane where the hole cores are located.

[0010] Furthermore, two straight grooves are respectively arranged on the arc-shaped tube wall of the tube body corresponding to the right-angled sides of the right-angled isosceles triangle formed by the three through holes, and five straight grooves are respectively arranged on the arc-shaped tube wall of the tube body corresponding to the hypotenuse of the right-angled isosceles triangle formed by the three through holes, and the distance between two adjacent straight grooves located between two through holes is π / 6 radians, and the distance between two straight grooves located on both sides of the through hole is π / 3 radians.

[0011] Furthermore, the tube body is made of polytetrafluoroethylene material.

[0012] The beneficial effects of adopting the above technical solution are:

[0013] 1. The present invention provides a through hole and a circular groove on the body of the winding tube, so that when the wire is wound around the through hole, it can bypass the circular groove on the outer periphery of the through hole, so that the wire avoids the through hole, effectively improving the light transmittance of the coil; the provision of the through hole also allows the coil to have a larger gap, which is convenient for taking and placing objects during magnetic field experiments and is also beneficial to the transmission of models in the magnetic field.

[0014] 2. The center of the through hole and the circular groove is located in the middle of two adjacent annular grooves, that is, a number of annular grooves are symmetrically distributed on the upper and lower sides of the center of the through hole. When winding, the wire in the annular groove located on the upper side of the through hole center bypasses the groove in the upper half of the circular groove, and the wire in the annular groove located on the lower side of the through hole center bypasses the groove in the lower half of the circular groove. In this way, the wires can be symmetrical up and down at the through hole position, so that they can offset each other when generating a magnetic field, effectively ensuring the uniformity of the entire magnetic field. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 , 2 It is a schematic diagram of the structure of the present invention;

[0016] Figure 3 It is a front view of the present invention;

[0017] Figure 4 yes Figure 3 A-direction sectional view;

[0018] Figure 5 yes Figure 3 Enlarged view of part B. DETAILED DESCRIPTION

[0019] In conjunction with the accompanying drawings, a winding bobbin for a magnetic field generating device comprises a tube body 10, a plurality of annular grooves 11 are evenly spaced on the tube wall of the tube body 10 along the tube core direction, a straight groove 12 is also formed on the tube wall of the tube body 10 parallel to the tube core, the annular grooves 11 are connected to each other through the straight grooves 12, a through hole 13 is also formed on the tube wall of the tube body 10, a circular groove 14 is formed on the outer periphery of the through hole 13, and the circular groove 14 is connected to the adjacent annular groove 11. By forming the through hole 13 and the circular groove 14 on the tube body 10 of the winding bobbin, when the wire of the solenoid coil is wound around the through hole 13, it can bypass the circular groove 14 on the outer periphery of the through hole 13, so that the wire avoids the through hole 13, and the light transmittance of the coil is effectively improved; the setting of the through hole 13 also makes the coil have a larger gap, which is convenient for taking and placing objects when conducting magnetic field experiments, and is also conducive to the transmission of models in the magnetic field.

[0020] In the specific setting, the hole core of the through hole 13 is located on the middle plane of two adjacent annular grooves 11, and the circular groove 14 is arranged concentrically with the through hole 13, and the circular groove 14 is connected with four adjacent annular grooves 11. The center of the through hole 13 and the circular groove 14 is located in the middle of two adjacent annular grooves 11, that is, a number of annular grooves 11 are symmetrically distributed on the upper and lower sides of the center of the through hole 13. When winding, the wires in the two annular grooves 11 located on the upper side of the center of the through hole 13 bypass the grooves in the upper half of the circular groove 14, and the wires in the two annular grooves 12 located on the lower side of the center of the through hole 13 bypass the grooves in the lower half of the circular groove 14. In this way, the wires can achieve upper and lower symmetry at the position of the through hole 13, so that they can offset each other when generating a magnetic field, which not only effectively ensures the uniformity of the entire magnetic field, but also effectively improves the transmittance of the magnetic field.

[0021] Furthermore, there are three through holes 13, the cores of the three through holes 13 are on the same plane and the plane is perpendicular to the core of the tube body 10, and three circular grooves 14 are provided corresponding to the through holes 13. The three through holes 13 are arranged in a right-angled isosceles triangle on the plane where the cores are located. The provision of three through holes 13 can better improve the light transmittance of the magnetic field. The three through holes 13 are arranged on a plane and in a right-angled isosceles triangle arrangement, which can further effectively prevent the irregularity of the coil from affecting the magnetic field and ensure the uniformity of the magnetic field generated by the coil.

[0022] Furthermore, two straight grooves 12 are respectively arranged on the arc-shaped tube wall of the tube body 10 corresponding to the right angle side of the right isosceles triangle formed by the three through holes 13, and five straight grooves 12 are respectively arranged on the arc-shaped tube wall of the tube body 10 corresponding to the hypotenuse of the right isosceles triangle formed by the three through holes 13. The distance between two adjacent straight grooves 12 located between two through holes 13 is π / 6 radians, and the distance between two straight grooves 12 located on both sides of the through hole 13 is π / 3 radians. A plurality of straight grooves 12 are arranged, and the interval is basically π / 6 radians, so that the winding tube can be applied to the winding of various coils. When used to generate a three-dimensional magnetic field, it can not only be used to wind a solenoid coil, but also to wind a saddle-shaped coil. One tube has multiple uses, which is not only convenient, but also can greatly reduce the volume of the three-dimensional magnetic field generating device.

[0023] The tube body 10 is made of polytetrafluoroethylene (PTFE), which is a high molecular polymer with good insulation effect. When used as a winding tube material, it can effectively reduce interference with the magnetic field.

Claims

1. A bobbin for a magnetic field generating device, characterized in that: The invention comprises a tube body (10), wherein a plurality of annular grooves (11) are evenly spaced apart on the tube wall of the tube body (10) along the tube core direction, and a straight groove (12) parallel to the tube core is also formed on the tube wall of the tube body (10), and the annular grooves (11) are interconnected via the straight groove (12). A through hole (13) is also formed on the tube wall of the tube body (10), and a circular groove (14) is formed on the outer periphery of the through hole (13); The core of the through hole (13) is located on the middle plane of two adjacent annular grooves (11); the circular groove (14) is arranged concentrically with the through hole (13); and the circular groove (14) is connected with four adjacent annular grooves (11); There are three through holes (13), the cores of the three through holes (13) are located on the same plane and the plane is perpendicular to the core of the tube body (10), and three circular grooves (14) are arranged corresponding to the through holes (13); The three through holes (13) are arranged in the form of a right-angled isosceles triangle on the plane where the hole cores are located; two straight grooves (12) are respectively arranged on the arc-shaped tube wall of the tube body (10) corresponding to the right-angled sides of the right-angled isosceles triangle formed by the three through holes (13); five straight grooves (12) are respectively arranged on the arc-shaped tube wall of the tube body (10) corresponding to the hypotenuse of the right-angled isosceles triangle formed by the three through holes (13); two adjacent straight grooves (12) located between two through holes (13) are spaced apart by π / 6 radians, and two straight grooves (12) located on both sides of the through hole (13) are spaced apart by π / 3 radians; The tube body (10) is made of polytetrafluoroethylene material.

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