Maglev vibration motor and gamepad

Abstract

A maglev vibration motor, comprising a housing assembly (100), an electromagnetic assembly (200), and an oscillator assembly (300). The housing assembly (100) comprises an outer cylinder (110) having an accommodating cavity; the electromagnetic assembly (200) comprises an elongated cylindrical bobbin (210) having an inner cavity, and coil windings (220) wound around the bobbin (210) along the axial direction of the bobbin (210); and the oscillator assembly (300) comprises two end magnets (310) and one magnetic oscillator (320), the two end magnets (310) are fixed at two axial ends of the bobbin (210) in one-to-one correspondence, the magnetic oscillator (320) is levitated between the two end magnets (310), and the coil windings (220) are configured to be energized to generate a magnetic field in the inner cavity and drive the magnetic oscillator (320) to reciprocate within the inner cavity.

Description

Magnetic levitation vibration motor and game controller Technical Field

[0001] This invention relates to the field of vibration motors, and in particular to a magnetic levitation vibration motor and a game controller. Background Technology

[0002] In mobile phones and game controllers, a type of motor that only needs to provide vibration without outputting power or connecting to other devices can be used. This can be achieved by installing an eccentric output shaft on a regular motor, or by using a magnetic levitation motor. For example, application number 202311184849.4, entitled "A Magnetic Levitation Vibration Motor", is a better form of magnetic levitation vibration motor.

[0003] The positioning structure allows the second cylinder in the above-mentioned utility model application to slide at intervals within the receiving cavity. Then, the second magnetic field generated by the electromagnetic coil drives the oscillator assembly to reciprocate axially within the receiving cavity of the shell, which to some extent solves the problem of difficulty in controlling the offset of the oscillator during high-frequency vibration in the prior art.

[0004] However, in the aforementioned utility model application, the magnet is theoretically suspended within the cylindrical kit under the influence of the magnetic field generated by the kit. In actual production applications, it is difficult to achieve complete uniformity in the cylindrical kit. Inconsistent thickness and material uniformity will result in uneven magnetic field strength at various locations on the cylindrical kit. This will exert forces with varying directions and magnitudes on the magnet or oscillator assembly, making it difficult for the oscillator assembly to maintain linear reciprocating vibration. While the positioning structure can prevent collision and wear between the oscillator assembly and the inner wall of the cavity, it cannot prevent collision and wear between the oscillator assembly and the positioning structure. Ultimately, this will still affect the service life and vibration quality of the magnetic levitation vibration motor. Summary of the Invention

[0005] Therefore, it is necessary to provide a magnetic levitation vibration motor and a game controller.

[0006] A magnetic levitation vibration motor, comprising:

[0007] The housing assembly includes an outer cylinder having a receiving cavity;

[0008] An electromagnetic assembly includes a long cylindrical wire frame with an inner cavity, and a coil winding axially wound around the wire frame.

[0009] The oscillator assembly includes two end magnets and a magnetic oscillator. The two end magnets are fixed one-to-one at the two axial ends of the wire frame. The magnetic oscillator is suspended between the two end magnets. The coil winding is used to energize the coil to generate a magnetic field in the cavity and drive the magnetic oscillator to reciprocate within the cavity.

[0010] A game controller, comprising a controller body and a magnetic levitation vibration motor as described in any of the above. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0012] Figure 1 is an exploded view of a magnetic levitation vibration motor according to an embodiment of the present invention;

[0013] Figure 2 is a three-dimensional structural diagram of the electromagnetic component in one embodiment of the present invention;

[0014] Figure 3 is a three-dimensional structural diagram of the oscillator assembly and wire frame in one embodiment of the present invention;

[0015] Figure 4 is a three-dimensional structural diagram of the wire frame in one embodiment of the present invention;

[0016] Figure 5 is a schematic diagram of the assembly structure of the wire frame and the magnetic resonator in another embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures:

[0018] 100 - Housing assembly, 200 - Electromagnetic assembly, 300 - Oscillator assembly;

[0019] 110-Outer cylinder, 120-End cap, 130-Base; 121-Hollowed part, 131-Bottom cap, 132-Sleeve, 132a-Receiving groove;

[0020] 210-Wire frame, 220-Coil winding, 221-First coil winding, 222-Second coil winding, 211-Connecting ring, 212-Support beam, 211a-Notch;

[0021] 310 - End magnet, 320 - Magnetic resonator, 321 - Limiting groove. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] An embodiment of the first aspect of this application provides a magnetic levitation vibration motor, as shown in FIG1. ​​The magnetic levitation vibration motor includes a housing assembly 100, an electromagnetic assembly 200, and an oscillator assembly 300. The oscillator assembly 300 is disposed within the electromagnetic assembly 200 and the housing assembly 100, respectively. The electromagnetic assembly 200 is disposed within the housing assembly 100. Specifically, the housing assembly 100 includes an outer cylinder 110 with a receiving cavity, and the electromagnetic assembly 200 and other components are encapsulated within the receiving cavity of the outer cylinder 110.

[0026] As shown in Figures 1 and 2, the electromagnetic assembly 200 includes an elongated cylindrical wire frame 210 with an inner cavity, and a coil winding axially wound around the wire frame 210. Further details of the electromagnetic assembly 200 will be described later in the form of specific implementations.

[0027] As shown in Figures 1 and 3, the oscillator assembly 300 includes two end magnets 310 and one magnetic resonator 320. The two end magnets 310 are fixed one-to-one at the two axial ends of the wire frame 210. The magnetic resonator 320 is suspended between the two end magnets 310. The coil winding is used to energize and generate a magnetic field in the inner cavity, driving the magnetic resonator 320 to reciprocate within the inner cavity. The end magnets 310 are located at the two axial ends of the wire frame 210, and the magnetic resonator 320 is located between the two end magnets 310. The two opposite magnetic poles of the end magnets 310 and the magnetic resonator 320 are the same, realizing mutual repulsion between the end magnets 310 and the magnetic resonator 320, thereby suspending the magnetic resonator 320 in the inner cavity of the wire frame 210. The coil winding is wound around the outer circumference of the coil frame 210. When an electromagnetic field is generated by energizing the coil winding, it exerts a force on the magnetic resonator. When the electromagnetic field is generated, it breaks the mechanical balance previously maintained only by the end magnet and the magnetic resonator, causing the magnetic resonator to suddenly move to one side. The closer it gets to the end magnet, the stronger the magnetic force on the magnetic resonator, causing it to decelerate, stop, and then return, forming a reciprocating motion until a new balance is reached, enabling the magnetic resonator 320 to move within the cavity. Combining the magnetic resonator 320's own gravity and the repulsive force of the end magnet 310, the final effect is that the magnetic resonator 320 vibrates reciprocally within the cavity, achieving the vibration output of the motor. By controlling the on / off state of the current in the coil windings at certain intervals, the electromagnetic field can be changed between being present and absent. When the electromagnetic field is present, it drives the magnetic resonator to move suddenly. When it reaches the position closest to the end magnet, the current is removed, the electromagnetic field is removed, and the force on the magnetic resonator disappears. This allows the magnetic resonator to reciprocate between the end magnets for a longer period of time until it reaches the original mechanical equilibrium state. In this implementation method, the magnetic levitation vibration motor can also achieve a certain energy-saving effect.

[0028] The magnetic levitation vibration motor provided by this invention has a new vibration structure. By setting a vibrating magnetic resonator 320 inside the wire frame 210 with coil windings, the magnetic resonator 320 is confined in the inner cavity of the wire frame 210 by magnetic field repulsion. This solves the technical problem that the magnetic field in the radial direction of the magnetic resonator 320 cannot be well homogenized, which easily leads to flipping and collision. It further reduces the collision and wear between the resonator and the surrounding limiting devices, and makes it easier to achieve the levitation vibration of the magnetic resonator 320, making the vibration of the magnetic levitation vibration motor more linear and smooth.

[0029] Optionally, in some implementations of the first aspect of this application, as shown in FIG1, the housing assembly 100 further includes an end cap 120 and a base 130. The end cap 120 and the base 130 are respectively connected to the two axial ends of the outer cylinder 110, and the end magnets 310 are respectively disposed in the end cap 120 and the base 130. The two ends of the housing assembly 100 are assembled split structures, which facilitates the placement of the end magnets 310 and also facilitates the installation of the electromagnetic assembly 200 and the magnetic resonator 320 in the receiving cavity of the outer cylinder 110. The base 130 includes two parts: a bottom cover 131 and a sleeve 132. The two parts can be integrally formed or fixedly connected together by ultrasonic welding. The sleeve 132 can accommodate the wire frame 210. An installation groove is provided on the inner wall of the sleeve 132 to accommodate the wire frame 210 while preventing the wire frame 210 from rotating around the axis. The connecting wire is connected to the wire frame 210 through electrodes provided on the bottom cover 131, that is, it is connected to both ends of the coil winding 220 through two electrodes. A receiving groove 132a for accommodating the connecting ring 211 is provided in the middle part of the sleeve 132.

[0030] Further optionally, in conjunction with the embodiments of the first aspect and the above-described implementations, in some other implementations of the embodiments of the first aspect, as shown in FIG1, a hollow portion 121 is provided on the end cap 120 or the base 130, and the end cap 120 and the base 130 are ultrasonically welded to the outer cylinder 110 respectively. The hollow portion 121 on the end cap 120 or the bottom cap 131 can specifically be a deliberately designed hole or slot, or a gap formed between different parts of the end cap 120 or the base 130. Through the hollow portion 121, the accommodating cavity of the outer cylinder 110 is connected to the outside, preventing the magnetic resonator 320 from generating negative or positive pressure during compression or expansion, thus hindering the movement of the magnetic resonator 320. To achieve the integration of the outer shell assembly 100, the end cap 120 can be connected to the outer cylinder 110 by welding, and the base 130 can be connected to the outer cylinder 110. The base 130 is provided with a space for circuitry to enter, for example, electrodes can be provided on the base 130 to facilitate wiring. To avoid additional interference to the design magnetic field of the electromagnetic component 200 and the oscillator component 300, the housing component 100 is made of non-ferromagnetic material, usually plastic, so the housing component 100 can be assembled by ultrasonic welding.

[0031] Optionally, in conjunction with the embodiments of the first aspect and the above implementation methods, in other embodiments of the first aspect, as shown in Figures 1 and 4, the wire frame 210 includes a central connecting ring 211 and several support beams 212. The support beams 212 are evenly distributed circumferentially along the inner wall of the connecting ring 211 and extend in a direction parallel to the axial direction of the inner cavity. The middle part of the support beam 212 is connected to the connecting ring 211. To simplify the wire frame 210 as much as possible, the wire frame 210 is designed as several support beams 212 surrounding each other and connected by the connecting ring 211 to form a whole. The middle of each support beam 212 is connected to the connecting ring 211, which is equivalent to dividing the support beam 212 into two parts of equal length, left and right or top and bottom, with each part wound with a portion of the coil winding. Optionally, in some specific implementations, the connecting ring 211 and the support beams 212 are integrally formed. The integrally formed wire frame 210 has a more compact structure and greater strength.

[0032] Optionally, in conjunction with the embodiments of the first aspect and the above implementations, in some implementations of other embodiments of the first aspect, as shown in Figures 1 and 2, the coil winding 220 includes a first coil winding 221 and a second coil winding 222 arranged axially along the wire frame. The connecting ring 211 has a notch 211a, and the wire forming the first coil winding 221 extends from one end of the notch 211a to the other end and is wound to form the second coil winding 222. The first coil winding 221 and the second coil winding 222 are wound from the same wire, and the transition position is the notch 211a provided in the middle of the connecting ring 211. Through this notch 211a, the passing wire can be buried in the wire frame 210 to avoid protruding and contacting the inner wall of the outer cylinder 110. The first coil winding 221 and the second coil winding 222 are formed by a single wire. The winding direction of the first coil winding 221 is the same as that of the second coil winding 222, and the current direction is the same. The first coil winding 221 and the second coil winding 222 form two sections equivalent to the same electromagnet. The magnetic field strength is the largest in the middle part, which can generate a larger unidirectional force and drive the magnet 320 located in the middle faster and with greater force. With the cooperation of the end magnet 310, the magnet 320 can oscillate back and forth.

[0033] Of course, the first coil winding 221 and the second coil winding 222 can also be made independent of each other. The first coil winding 221 and the second coil winding 222 can be wound separately by two non-interfering wires. In this implementation, the winding directions of the first coil winding 221 and the second coil winding 222 can be the same or opposite. By adjusting the direction of the current flow, that is, the circuit structure in the magnetic levitation vibration motor, the magnetic field direction of the first coil winding 221 and the second coil winding 222 can be adjusted to ensure that the segmented electromagnetic fields generated in the two coil windings have a superimposed magnetic field force on the magnetic resonator 320.

[0034] Optionally, in conjunction with the embodiments of the first aspect and the above implementation methods, in some other implementations of another embodiment of the first aspect, as shown in FIG4, the side circumferential surface of the support beam 212 facing the magnetic resonator 320 is an arc surface. The smooth arc surface of the side circumferential surface of the support beam 212 facing the magnetic resonator 320 can reduce the contact area with the magnetic resonator 320, reducing the friction between them. Simultaneously, because it is an arc surface, it can still effectively support the magnetic resonator 320 when its posture changes. Further optionally, as shown in FIG5, a plurality of limiting grooves 321 corresponding one-to-one with the support beam 212 are provided on the outer circumferential side of the magnetic resonator 320, and the support beam 212 protrudes into the limiting grooves 321. The limiting grooves 321 can both support the magnetic resonator 320, preventing the magnetic resonator 320 from rotating around its axis, and allow the magnetic resonator 320 to oscillate back and forth along the length direction of the limiting grooves 321, using the limiting grooves 321 as a sliding groove. Meanwhile, the matching relationship between the limiting groove 321 and the magnetic resonator 320 can prevent the magnetic resonator 320 from flipping, making the oscillation of the magnetic resonator 320 more controllable.

[0035] Furthermore, in conjunction with the embodiments of the first aspect and the above-described implementations, in some further implementations of another embodiment of the first aspect, the support beam 212 is a self-lubricating support beam. To further reduce the resistance generated by friction between the magnetic resonator 320 and the support beam 212, the support beam 212 can be made of a self-lubricating material, that is, the support beam 212 is a self-lubricating support beam. For example, it can be made of POM (polyurethane) or PA (polyamide), which is easy to mold, has good wear resistance, and is self-lubricating.

[0036] Based on the same technical concept, an embodiment of the second aspect of this application provides a game controller, which includes a controller body and a magnetic levitation vibration motor as described in any of the first aspects of this application. The magnetic levitation vibration motor, as a vibration source inside the controller body, is combined with the circuit board in the game controller to vibrate as needed during gameplay.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A magnetic levitation vibration motor, characterized by, include: The housing assembly includes an outer cylinder having a receiving cavity; An electromagnetic assembly includes a long cylindrical wire frame with an inner cavity, and a coil winding axially wound around the wire frame. The oscillator assembly includes two end magnets and a magnetic oscillator. The two end magnets are fixed one-to-one at the two axial ends of the wire frame. The magnetic oscillator is suspended between the two end magnets. The coil winding is used to energize the coil to generate a magnetic field in the cavity and drive the magnetic oscillator to reciprocate within the cavity.

2. The magnetic levitation vibration motor according to claim 1, characterized in that, The outer casing assembly also includes an end cap and a base, the end cap and the base being connected to the two axial ends of the outer cylinder respectively, and the end magnets being disposed in the end cap and the base respectively.

3. The magnetic levitation vibration motor of claim 2, wherein, The end cap or the base has a hollowed-out section.

4. The magnetic levitation vibration motor of claim 2, wherein, The end cap and the base are ultrasonically welded to the outer cylinder, respectively.

5. The magnetic levitation vibration motor of claim 1, wherein, The wire frame includes an intermediate connecting ring and several support beams. The support beams are circumferentially spaced along the inner wall of the connecting ring and extend in a direction parallel to the axial direction of the inner cavity. The support beams are connected to the connecting ring.

6. The magnetic levitation vibration motor of claim 5, wherein, The support beams are evenly distributed along the circumference of the connecting ring, and the middle part of the support beams is connected to the connecting ring.

7. The magnetic levitation vibration motor of claim 6, wherein, The connecting ring is integrally formed with the supporting beam.

8. The magnetic levitation vibration motor of claim 5, wherein, The coil winding includes a first coil winding and a second coil winding arranged along the axial direction of the wire frame. The wire forming the first coil winding passes over the connecting ring and is wound to form the second coil winding.

9. The magnetic levitation vibration motor of claim 8, wherein, The connecting ring has a notch, and the wire forming the first coil winding extends from one end of the notch to the other end.

10. The magnetic levitation vibration motor of claim 5, wherein, The side surface of the support beam facing the magnetic resonator is an arc surface.

11. The magnetic levitation vibration motor of claim 5, wherein, The support beam is a self-lubricating support beam.

12. The magnetic levitation vibration motor of claim 5, wherein, The outer peripheral side of the magnetic resonator is provided with a plurality of limiting grooves corresponding one-to-one with the support beam, and the support beam protrudes into the limiting grooves.

13. A gamepad, characterized in that It includes the handle body and the magnetic levitation vibration motor as described in any one of claims 1 to 12.

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