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A passive magnetic spring

A technology of magnetic springs and permanent magnets, applied in the direction of magnetic springs, springs, springs/shock absorbers, etc., can solve the problems of complex manufacturing process and high cost, and achieve the effects of compact structure, high thrust density and high reliability

Active Publication Date: 2018-11-20
宁波亿文特自动化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this solution adopts HALBACH's magnetic circuit structure, the manufacturing process is complicated and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] like figure 1 In the shown embodiment, a passive magnetic spring includes a stator and a mover 5, the stator includes a casing 4 and two stator shaft ends 1, the stator shaft ends are respectively located at the ends of the casing, and the ends of the casing are connected to the stator shaft ends Thread fit. The stator is provided with a stator permanent magnet 2, the magnetic pole direction of the stator permanent magnet is parallel to the stator axial direction, the stator permanent magnet is located between the two stator shaft ends, and the stator shaft end clamps and positions the stator permanent magnet.

[0024] The mover is provided with two mover shaft ends 7 and two mover permanent magnets, the mover is provided with an external thread, and the mover shaft end is provided with an internal thread matched with the external thread. The two mover permanent magnets are the first mover permanent magnet 3a and the second mover permanent magnet 3b, the mover permanen...

Embodiment 2

[0027] like image 3 In the shown embodiment, a passive magnetic spring includes a stator and a mover 5, the stator includes a casing 4 and two stator shaft ends 1, the stator shaft ends are respectively located at the ends of the casing, and the ends of the casing are connected to the stator shaft ends Thread fit. The stator is provided with a stator permanent magnet 2, the magnetic pole direction of the stator permanent magnet is parallel to the stator axial direction, the stator permanent magnet is located between the two stator shaft ends, and the stator shaft end clamps and positions the stator permanent magnet.

[0028] The mover is provided with two mover shaft ends 7 and two mover permanent magnets, the mover is provided with an external thread, and the mover shaft end is provided with an internal thread matched with the external thread. The two mover permanent magnets are the first mover permanent magnet and the second mover permanent magnet 3b, the mover permanent m...

Embodiment 3

[0031] The difference of this embodiment relative to embodiment 1 and embodiment 2 is that, as Figure 5 As shown, the mover is provided with a scavenging sleeve 10, the scavenging sleeve is located in the casing 4, the stator shaft end 1 is provided with a vent hole 1a, and the vent hole is provided with an air guide channel 1b, and the outlet of the air guide channel faces the stator shaft The sliding mating surface at the end, the air guide channel is provided with a filter screen 9. The scavenging sleeve is provided with a through hole 10a arranged along the axial direction of the mover, the through hole is provided with a valve plate 11 which can be opened and closed, and the inner side of the stator shaft end is provided with a protrusion 12 which can drive the valve plate to open and close. When it is necessary to scavenge air and dust, the valve plate is in the closed state, and during the movement of the mover relative to the stator, the air scavenging sleeve will com...

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PUM

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Abstract

The invention discloses a passive magnetic spring comprising a stator and a rotor. The stator comprises a shell and a stator shaft end located at the end of the shell and slide relative to the rotor. A stator permanent magnet is arranged in the stator. The magnetic pole direction of the stator permanent magnet is parallel to the axial direction of the stator. The rotor is provided with at least two rotor permanent magnets. The rotor permanent magnets are arranged in the axial direction of the rotor. At least one rotor permanent magnet and the stator permanent magnet are arranged in a like polarity way. The passive magnetic spring provided by the invention is compact in structure, and manufacturing difficulty and cost can be lowered effectively.

Description

technical field [0001] The invention belongs to the field of springs, in particular to a passive magnetic spring. Background technique [0002] Springs are widely used in mechanical equipment and instruments. According to the principle of action, there are mechanical, pneumatic, hydraulic, electromagnetic, etc., and according to the function, there are linear and constant force. For magnetic springs, through appropriate magnetic circuit design, using the characteristics of permanent magnets that repel each other and attract each other, a linear spring that is proportional to displacement, or a constant force spring that is independent of displacement within a certain range can be formed. For example, the patent US9016446 discloses a magnetic spring that can achieve similar functions. The magnetic spring utilizes the magnetic field located at the stator and the slider to modulate the magnetic field characteristics, allowing the force curve to be customized within the range of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F6/00
CPCF16F6/005
Inventor 廖有用俞岳平韩旭奎陈接
Owner 宁波亿文特自动化科技有限公司
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