Horizontal-vibration linear motor of low magnetic leakage

A linear motor, flux leakage technology, applied in electrical components, electromechanical devices, electric components, etc., can solve the problem of not being able to meet the low cost and good magnetic shielding effect at the same time, to improve the magnetic shielding effect, reduce production costs, left and right The effect of uniform amplitude

CN104868689AInactive Publication Date: 2015-08-26JINLONG MACHINERY & ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-08-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a horizontal-vibration linear motor of low magnetic leakage. The motor comprises a casing, a cover plate, a vibration assembly and a solenoid, vibration assembly is hung inside the mounting space by being positioned via elastic support pieces positioned on the two opposite inner walls of the casing, and when the solenoid is electrified, the vibration assembly vibrates in a reciprocating manner in the direction basically parallel with the bottom of the casing, and the two elastic support pieces are stretched and compressed. The vibration assembly comprises a mass bock connected with the elastic support pieces and permanent magnets mounted on the mass block. A magnetic blocking plate covers the mass block in a fit manner and further covers the permanent magnets, the material of the magnetic blocking plate is No.430 stainless steel, and the thickness of the magnetic blocking plate ranges from 0.2 to 0.5mm. According to the horizontal-vibration linear motor of low magnetic leakage, the magnetic field intensity at the outer side of the magnetic blocking plate is controlled below 500GS, components of a mobile phone or game machine at the outer side of the magnetic blocking plate are prevented from interference of the magnetic field, the production cost is reduced, and the linear motor is conducive to production scale enlargement of domestic enterprises.
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Description

technical field

[0001] The invention relates to a low magnetic flux leakage horizontal vibration linear motor, which belongs to the technical field of horizontal vibration linear motor equipment. Background technique

[0002] At present, mobile consumer electronics products on the market generally use vibration motors as system feedback components, such as incoming call prompts for mobile phones, vibration feedback for game consoles, and so on. Existing vibration motors on the market mainly include cylindrical iron core motors, coreless motors and linear motors. Cylindrical iron core motors and coreless motors not only have complex structures, large thickness, and many manufacturing processes, but also have high motor noise and poor control accuracy, so they are rarely used. Linear motors vibrate smoothly and are widely used in consumer electronics.

[0003] There is a horizontal vibrating linear motor in the prior art, such as figure 1 As shown, including the casing 01, ...

Examples

Embodiment 1

[0037] This embodiment provides a low magnetic flux leakage horizontal vibration linear motor, such as Figure 2-6 As shown, it includes a casing 1, a cover plate 2 which is installed on the casing 1 to form an installation space with the casing 1, and is suspended by the positioning of elastic supports 3 respectively installed on two opposite inner walls of the casing 1. The vibrating assembly installed in the installation space and the electromagnetic coil 6 arranged below the vibrating assembly, when the electromagnetic coil 6 is energized, the vibrating assembly reciprocates in a direction substantially parallel to the bottom surface of the casing 1, and vibrates During the process, the two elastic supports 3 are stretched and compressed.

[0038] Such as Figure 4 and Figure 5 As shown, the vibration assembly includes a mass block 4 connected to the elastic support 3, along the distribution direction of the two elastic supports 3 (ie Figure 5 shown in the left and ri...

Embodiment 2

[0054] This embodiment provides a low-flux leakage horizontal vibration linear motor, which is a deformation on the basis of Embodiment 1. The difference lies in the difference in the arrangement of the vibration assembly and the electromagnetic coil 6. In this embodiment, the vibration assembly includes an elastic support 3 connected mass block 4, an installation through hole 41 provided in the middle of mass block 4, and a permanent magnet 5 fixedly installed on mass block 4 by inserting into the above installation through hole 41, the thickness and quality of permanent magnet 5 Block 4 has the same thickness.

[0055] There are two electromagnetic coils 6, both of which are located directly below the mass block 4 and fixedly installed side by side on the top surface of the cover plate 2 along the distribution direction of the two above-mentioned elastic supports 3. The two electromagnetic coils 6 are arranged in series and face upward after being energized The magnetic pole...