CN214480336U

CN214480336U - Magnetic suspension device

Info

Publication number: CN214480336U
Application number: CN202120795963.0U
Authority: CN
Inventors: 许锋
Original assignee: Dongguan Hongming Electronic Technology Co ltd
Current assignee: Dongguan Hongming Electronic Technology Co ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-10-22
Anticipated expiration: 2031-04-19

Abstract

The utility model discloses a magnetic suspension device, suspend the magnetic element in the base top including the base, magnetic element has different magnetic upper surface and lower surface, be equipped with field style of calligraphy lattice type permanent magnet in the base, its upper surface is opposite with magnetic element lower surface magnetism, relative permanent magnet central point puts the symmetry in the blank of field style of calligraphy lattice type permanent magnet is equipped with two at least solenoid, field style of calligraphy lattice type's permanent magnet upper surface magnetism is opposite with magnetic element lower surface, enable magnetic element at the stable reference position that is in of Z epaxial, if magnetic element is at X axle and Y epaxial skew reference position, thereby accessible control solenoid adjusts magnetic element to reference position.

Description

Magnetic suspension device

Technical Field

The utility model relates to a magnetic suspension device.

Background

Magnetic levitation is a technology that uses the principle that like magnets repel each other and the magnetic force balances gravity to suspend an object. At present, the application of the magnetic suspension technology is wider and wider, and some magnetic suspension devices manufactured by the magnetic suspension technology, such as magnetic suspension toys, magnetic suspension artware and magnetic suspension demonstration teaching aids, gradually appear on the market. The magnetic suspension device has a dynamic ornamental effect, and can intuitively reflect the running state of each fixed star of the solar system as teaching, so that the magnetic suspension device has a huge potential market.

At present, a magnetic suspension device on the market generally adopts a ring magnet, in order to prevent a magnetic element or a suspension body with a built-in magnet from side turning and overturning, a magnet with the upper surface having the same magnetism as the lower surface of the magnetic element is usually additionally arranged at the central position of the ring magnet, the magnet arranged at the middle position limits the arrangement positions of other elements such as a control circuit, a sensor and the like, and the mode is fixed by the thinking of technical personnel in the field, and a magnetic suspension device with a new structure is urgently needed to be designed to meet the requirement of people on pursuing new style increasingly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a magnetic suspension device, aims at solving the most annular magnet that is of current magnetic suspension product base, lacks the technological problem of new intention.

In order to achieve the above object, the utility model provides a magnetic suspension device, include the base and suspend in the magnetic element of base top, magnetic element has different magnetic upper surface and lower surface, be equipped with field style of calligraphy lattice permanent magnet in the base, its upper surface is opposite with magnetic element lower surface magnetism, relative permanent magnet central point symmetry is equipped with two at least solenoid in the blank of field style of calligraphy lattice permanent magnet.

Preferably, the central position of the permanent magnet is in a connection shape or a hollow shape, a sensor is arranged at the central position of the permanent magnet, and the sensor is respectively connected to the electromagnetic coils through a control circuit.

Preferably, the sensors are provided in at least two numbers for detecting the offset amounts of the elements in the X-axis and Y-axis directions.

Preferably, the sensor is a hall sensor.

Preferably, magnets are arranged inside the electromagnetic coil winding, and the magnetism of the upper surface of each magnet is the same as that of the lower surface of the magnetic element.

Preferably, the material of the magnet is neodymium iron boron.

Preferably, the magnetic element and the permanent magnet are made of neodymium iron boron.

Compared with the prior art, the utility model discloses an useful part lies in:

the utility model discloses a magnetic suspension device has abandoned traditional annular ferrite magnet mode, structurally adopts the brand-new combination of arranging, and the material that is different from annular magnet is chooseed for use to the magnet simultaneously, lets whole magnetic suspension device reasonable more, compact to the suspension height is higher, and control is more stable.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a magnetic suspension device of the present invention;

FIG. 2 is a schematic view of an alternative form of FIG. 1;

fig. 3 is a schematic structural diagram of another embodiment of the magnetic levitation device of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In one embodiment, as shown in fig. 1, the magnetic suspension apparatus includes a base and a magnetic element 1 suspended above the base, the magnetic element 1 has an upper surface and a lower surface with different magnetism, a rectangular permanent magnet 2 is disposed in the base, the upper surface of the rectangular permanent magnet 2 has opposite magnetism to the lower surface of the magnetic element 1, and at least two electromagnetic coils 3 are symmetrically disposed in the space of the rectangular permanent magnet 2 relative to the center of the permanent magnet.

In this embodiment, the bottom of the magnetic element 1 is an N pole, the upper surface of the latticed rectangular permanent magnet 2 is an S pole, and an upward magnetic repulsion force to the magnetic element 1 is formed at a position on the central position axis (Z axis) of the latticed rectangular permanent magnet 2, and the magnetic repulsion force exactly offsets the gravity of the magnetic element 1 to enable the magnetic element 1 to be suspended at the position, which is temporarily referred to as a reference position. And because the structure of the field-shaped permanent magnet 2 makes the magnetic element 1 not prone to side-turning and overturning at the reference position, it is not necessary to add a magnet for preventing the magnetic element 1 from turning and overturning at the central position, so that the central position is reserved for arranging the sensor 4, the sensor 4 is arranged at the central position, so that the offset of the magnetic element 1 between the X axis and the Y axis relative to the reference position can be detected more accurately, the offset is fed back to the control circuit, the control circuit controls the current led to the electromagnetic coil 3, so as to adjust the magnetic element 1 to return to the reference position, and how the control circuit controls the electromagnetic coil 3 is not described herein for the prior art. In this embodiment, the center position of the permanent magnet 2 is a connection shape, four spaces of the rectangular grid type permanent magnet 2 are respectively provided with one electromagnetic coil 3, four sensors 4 are respectively connected to the electromagnetic coils 3 through a control circuit one by one, and the sensors 4 adopt hall sensors, so that the sensitivity and the precision are high. The electromagnetic coil 3 is a circular electromagnetic coil, and may be square, diamond, triangle or other irregular shapes besides the circular electromagnetic coil in the embodiment.

In order to achieve a better suspension effect, namely, a higher suspension height, the magnetic element 1 and the latticed field permanent magnet 2 are made of neodymium iron boron, the magnetic force of the neodymium iron boron magnet is usually 5 times or even more than 10 times that of the ferrite magnet, the suspension effect is obvious, and in the specific design, the latticed field permanent magnet 2 can be replaced by the ferrite magnet.

As shown in fig. 2, which is a variation of fig. 1 of this embodiment, two "+" shaped permanent magnet strips in the latticed field permanent magnet 2 in the base are changed into "×" shaped permanent magnet strips, and are connected to four corners of the latticed field permanent magnet 2, a hollowed through hole is opened at the center of the permanent magnet 2, four sensors 4 are disposed in the through hole, the sensors 4 are connected to the triangular electromagnetic coil 3 disposed at the space of the latticed field permanent magnet 2 through a control circuit, and are used for controlling and adjusting the offset of the magnetic element 1 between the X axis and the Y axis relative to the reference position.

In another embodiment, as shown in fig. 3, except that a magnet 5 is additionally arranged in the electromagnetic coil 3 and the central position of the latticed rectangular permanent magnet 2 is hollowed out, the other embodiments are the same as those in fig. 1, the hollowed-out positions are provided with four sensors 4, the four sensors 4 are respectively connected to the electromagnetic coil 3 one by one, the magnets 5 are arranged inside the four electromagnetic coils 3 in a winding manner, and the sensors 4 are preferably hall sensors.

The magnetism of the upper surface of the magnet 5 is the same as that of the lower surface of the magnetic element 1, in the embodiment, the lower surface of the magnetic element 1 is an N pole, the upper surface of the latticed rectangular permanent magnet 2 is an S pole, the upper surfaces of the four magnets 5 are all N poles, and the sensor 4 is arranged at the central position and can more accurately detect the offset of the magnetic element between the X axis and the Y axis relative to the reference position, so that the offset is fed back to the control circuit, and the control circuit controls the current led to the electromagnetic coil 3 to adjust the magnetic element 1 to return to the reference position.

Meanwhile, four identical magnets 5 with the same magnetism on the upper surfaces and the lower surfaces of the magnetic elements 1 are additionally arranged in four electromagnetic coils 3 which are symmetrical to each other by taking the central positions as the central positions, so that the stability of the magnetic elements 1 at the reference positions is improved, and the problems of overturning, side turning and the like of the magnetic elements 1 are avoided. The material of magnet 5, magnetic element 1, and permanent magnet 2 is preferably neodymium iron boron.

What just go up be the utility model discloses a part or preferred embodiment, no matter be characters or the drawing can not consequently restrict the utility model discloses the scope of protection, all with the utility model discloses a holistic thought down, utilize the equivalent structure transform that the contents of the description and the drawing do, or direct/indirect application all includes in other relevant technical field the utility model discloses the within range of protection.

Claims

1. A magnetic suspension device comprises a base and a magnetic element suspended above the base, wherein the magnetic element is provided with an upper surface and a lower surface with different magnetism.

2. The magnetic levitation device as recited in claim 1, wherein the permanent magnet is connected or hollowed at a center position, and a sensor is disposed at the center position and is respectively connected to the electromagnetic coils through a control circuit.

3. Magnetic levitation apparatus as claimed in claim 2, wherein at least two sensors are provided for detecting the displacement of the element in the X-axis and Y-axis directions.

4. Magnetic levitation apparatus as claimed in claim 2, wherein the sensor is a hall sensor.

5. The magnetic levitation device as recited in claim 1, wherein the electromagnetic coil windings are each internally provided with a magnet, and the upper surface of the magnet has the same magnetism as the lower surface of the magnetic element.

6. The magnetic levitation device as recited in claim 5, wherein the magnet is made of neodymium iron boron.

7. The magnetic levitation device as recited in claim 1, wherein the magnetic elements and the permanent magnets are made of neodymium iron boron.