Transverse linear motor structure

Abstract

The transverse linear motor structure comprises a lower shell, an upper shell, a weight part and an elastic piece, the weight part comprises a magnetic groove assembly, the magnetic groove assembly comprises mass blocks, a first magnetic conductive plate and a second magnetic conductive plate, the mass blocks are symmetrically and fixedly installed on the two sides of the second magnetic conductive plate, and a rectangular magnetic groove structure with an opening in the bottom face is formed; magnetic steel is fixed in the magnetic groove, and a first magnetic conductive plate is clamped and welded on the upper surface of the mass block and the upper surface of the second magnetic conductive plate. The side walls of the mass block at the two sides of the weight part are connected and provided with elastic sheets to form vibrators, the weight part is connected and arranged in the upper shell through the elastic sheets at the two sides of the weight part, and the upper shell and the lower shell are matched with each other to form a closed cavity. Through arrangement of the rectangular magnetic groove structure of the magnetic groove assembly, optimization of the elastic piece structure and arrangement of the buffer foam, magnetic leakage of the magnet in all directions is effectively shielded, the service life of the elastic piece is prolonged, and the mechanical reliability strength of the product is improved.

Description

technical field [0001] The invention belongs to the technical field of electromagnetism and vibration mechanics, and relates to VR / AR, automobile central control display screen, game handle and feedback function device of automobile steering wheel, in particular to a horizontal linear motor structure. Background technique [0002] "Broadband" is an industry trend of existing linear motors, and its products are more and more used in VR / AR, automotive steering wheels and gamepads and other fields that require vibration feedback. At the same time, end products also require greater vibration sense. experience. At present, broadband is mainly achieved by cooperating with the magnetic conductive shell to increase the utilization rate of the magnetic field line of the magnetic field and improve the driving force. In the process of product vibration, the force is not balanced, polarization occurs, and noise performance is poor. At the same time, the complex magnetic circuit structu...

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Problems solved by technology

At present, broadband is mainly achieved by cooperating with the magnetic shell to increase the utilization rate of the magnetic induction line and improve the driving force. However, this structure is often due to the difference in the static magnetic attraction of the magnet to the upper and lower shells or the upper and lower magnets at different displacements. This leads to unbalanced force, polarization, and poor noise performance during the vibration process of the product. At the same time, the complex magnetic circuit structure will also increase the cost of mold opening and repair; in addition, most of the shrapnel structures of linear motors that vibrate laterally use a single vibrating arm The "Z"-shaped structure of the existing traditional single vibrating arm often causes the shrapnel to bend and deform due to excessive instantaneous impulse during the directional feasibility drop process of the "Z"-shaped shrapnel of the existing traditional single vibrating arm, resulting in failure of the mechanical feasibility of the product; secondly The magnetic flux leakage of the magnet along the vibration direction often affects the absolute K value of the vibration system, thereby affecting the natural frequency of the product. At the same time, the static magnetic attraction force of the magnet to the shrapnel caused by the magnetic flux leakage will affect the stress concentration during the vibration process of the shrapnel, thereby reducing the force of the shrapnel. service life; in addition, the bending part of the single vibrating arm is often in contact with the contact plane, resulting in poor noise during the vibration process of the product

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