JP2019187161A - Micro linear transducer - Google Patents

Abstract

To provide a micro linear transducer capable of being used for a game console handle or other handheld devices so that tactile feedback is provided.SOLUTION: A micro linear transducer includes: a substrate 11; a coil 12; a magnet 20: a shield 21; a connection member 30; and a support member 60. One end of the coil 12 is welded to the substrate 11 to fix the coil 12 to the substrate 11 so as to constitute a stator 10. The magnet 20, the shield 21, a weight 40 and the connection member 30 are connected to each other in order from the bottom to the top to form a transducer 50. A spring plate 70 is installed between the support member 60 and the connection member 30. The transducer 50 and the support member 60 constitute a mechanical vibration unit having a characteristic frequency.SELECTED DRAWING: Figure 2

Description

  The present invention relates to the field of vibrators, and more specifically, to a micro linear vibrator that includes a vibrator and a support member and has a natural frequency.

  A conventional micro vibrator used for tactile feedback is realized mainly by vibration generated by eccentric rotation driven by a DC motor. However, since the direct current motor changes its direction through the brush, its life is limited to the brush and it is difficult to exceed 200 hours.

  Microbrushless motor vibrators have solved their lifetime problem, but their application is limited due to long start-up time, slow response speed and feedback delay.

  It is an object of the present invention to provide a micro linear transducer that can be used in a game console handle or other handheld device to provide tactile feedback.

  The micro linear vibrator of the present invention includes a substrate, a magnet, a connection member, and a support member.

  One surface of the substrate is connected to the coil so as to form a stator, and fixes one end of the coil to the substrate.

  The magnet is installed above the coil, and is attracted or repelled by the magnetic force of the coil and the magnetic force of the magnet, one side of the magnet is connected to the shield, the shield blocks the magnetic force generated by the magnet, and the one side of the shield is recessed. And the recess surrounds the outside of the shield.

  One side of the connecting member is connected to the shield to accommodate the magnet and the shield inside the connecting member, and the connecting member has at least one weight, and at least one weight is installed between the shield and the connecting member Is done.

  One surface of the support member is connected to the substrate, and accommodates a coil, a magnet, a shield, a connection member, and a weight between the support member and the substrate. Between the support member and the connection member, a spring plate and at least one of the support members are accommodated. One buffer member is installed, one end of the spring plate is connected to the support member, the other end is connected to the connection member, one end of the buffer member is connected to the support member, and the other end of the buffer member is connected to the connection member .

  More preferably, the coil is welded to the substrate.

  More preferably, the substrate is a printed circuit board.

  More preferably, the magnet, the shield, the weight, and the connection member are riveted sequentially from the bottom to the top to constitute the vibrator.

  More preferably, the micro linear vibrator further includes an upper cover, and the upper cover is connected to the lower cover to accommodate the structure between the upper cover and the lower cover.

  More preferably, at least one vibration damping member is further provided between the connection member and the substrate.

  Advantageous effects of the present invention:

  The present invention solves the problem of the service life by using the principle of the linear motor (brushless), and at the same time, by using the resonance technology, it realizes a quick start and obtains a good response speed. To solve.

FIG. 1 is a three-dimensional view of the present invention. FIG. 2 is a schematic structural view of the present invention. FIG. 3 is an exploded view of the present invention. FIG. 4 is a schematic view showing the vibration state of the present invention. FIG. 5 is an embodiment of the vibration damping member of the present invention.

  In order to more easily understand the content of the present invention and the effects that can be achieved, the present invention will be described in more detail with reference to exemplary embodiments and the accompanying drawings.

  The present invention will be described with reference to FIGS. Each of FIG. 1 to FIG. 4 is a three-dimensional view, a schematic structure diagram, an exploded view, and a schematic diagram showing a vibration state of the present invention. As shown in the drawings, the present invention provides a micro linear vibrator including a substrate 11, a magnet 20, a connection member 30, and a support member 60. One surface of the substrate 11 is connected to the coil 12 so as to constitute the stator 10, and one end of the coil 12 is fixed to the substrate 11. More preferably, the coil 12 is welded to the substrate 11.

  The magnet 20 is installed above the coil 12, and the magnet 20 and the coil 12 attract or repel each other due to the magnetic force of the coil 12 and the magnetic force of the magnet 20. One surface of the magnet 20 is connected to the shield 21, and the shield 21 blocks the magnetic force generated by the magnet 20. A recess 211 is provided on the periphery of one surface of the shield 21 (the surface on the connection member 30 side). The recess 211 surrounds the outside of the shield 21. That is, the recess 211 is provided on the periphery of the surface of the shield 21 on the side of the connection member 30 so as to surround the surface that contacts the connection member 30 in the vibration direction (vertical direction).

  One surface inside the connection member 30 is connected to the shield 21, and the magnet 20 and the shield 21 are accommodated inside the connection member 30. At least one weight 40 is provided inside the connection member 30, and the weight 40 is installed between the shield 21 and the connection member 30. The vibrator 20 is configured by riveting the magnet 20, the shield 21, the weight 40, and the connection member 30 in order from the bottom to the top.

  One end of the support member 60 is connected to the substrate 11, and the coil 12, the magnet 20, the shield 21, the connection member 30, and the weight 40 are accommodated between the support member 60 and the substrate 11. A spring plate 70 and at least one buffer member 80 are installed between the support member 60 and the connection member 30. One end of the spring plate 70 is connected to the support member 60, and the other end of the spring plate 70 is connected to the connection member 30. One end of the buffer member 80 is connected to the support member 60, and the other end of the buffer member 80 is connected to the connection member 30. The vibration damping member 80 is realized by, for example, cotton, foamed resin, rubber, or the like.

  The micro linear vibrator of the present invention may further include an upper cover 90 and a lower cover 91. The upper cover 90 is connected to the lower cover 91 and accommodates the structure, that is, the stator 10, the vibrator 50, the support member 60, the spring plate 70, and the buffer member 80 between the upper cover 90 and the lower cover 91.

  More preferably, the substrate 11 is a printed circuit board (PCB or PWB).

  The vibrator 50 and the support member 60 constitute a mechanical vibration unit having a natural frequency. The range of the natural frequency in the present invention is 50 Hz to 250 Hz. The coil 12 is in a magnetic field composed of the magnet 20 and the shield 21, and when the coil 12 is energized, the generated ampere force attracts or repels the magnet 20 to move the vibrator 50. When the coil 12 is energized with a rectangular pulse direct current and the frequency of the power pulse matches the natural frequency of the mechanical vibration unit, resonance vibration occurs, and the vibration of the mechanical vibration unit is conducted to the outside. Achieve effect. The coil 12 can be energized with a unidirectional rectangular wave pulse direct current and a bidirectional positive / negative rectangular wave pulse direct current. Of these, when energizing the coil 12 with a bidirectional positive / negative rectangular wave pulse direct current, Stronger vibration is obtained than when unidirectional rectangular wave pulse direct current is applied.

  When the vibrator 50 vibrates, the vibration force is transmitted to the spring plate 70, and the support member 60 connected to one end of the spring plate 70 relatively vibrates in conjunction with the spring plate. Further, when the vibrator 50 vibrates and the vibration force becomes excessive, the buffer member 80 can effectively buffer the vibration force of the vibrator 50, and the vibrator 50 generates the vibration force of the support member 60. Make it smaller than the vibration force. The weight 40 can increase the weight of the vibrator 50 and can effectively average the vibration force generated by the vibrator 50. That is, when the vibrator 50 is heavy, the vibration force generated by the vibrator 50 is relatively small. When the weight of the vibrator 50 is light, the vibration force generated by the vibrator 50 is relatively large.

  Moreover, the recessed part 211 is installed in the exterior (surface by the side of the connection member 30) of the shield 21, By installing this recessed part 211, the service life of the micro linear vibrator of this invention can be extended effectively. When the current passes through the coil 12, the magnet 20 moves while being attracted or repelled to move the magnet 20 and the shield 21 together. Since the shield 21 is connected to the connection member 30, when the shield 21 is interlocked with the magnet 20, the connection member 30 moves relatively, but the vibration frequency of the magnet 20 is larger, and the shield 21 and the connection member 30. Are not integrally molded, and therefore, when the shield 21 vibrates, an impact is always applied to the inside of the connecting member 30 (the surface on the shield 21 side). As time passes, the vibrator 50 is easily damaged. By installing the recess 211, the impact area between the shield 21 and the connection member 30 (the area where the shield 21 and the connection member 30 contact in the vibration direction) can be reduced, and the micro linear vibrator of the present invention. The service life can be extended.

  Another embodiment of the present invention will be described with reference to FIG. FIG. 5 is an embodiment of the vibration damping member of the present invention. As shown in the drawing, at least one vibration damping member 81 may be installed between the connection member 30 and the substrate 11. The vibration generated by the vibrator 50 is further buffered via the vibration buffer member 81, the downward force due to the vibration of the vibrator 50 is effectively buffered, and the vibration force generated by the vibrator 50 is averaged. Therefore, it is possible to avoid a situation where the vibration force becomes excessive. The vibration buffer member 81 is realized by, for example, cotton, foamed resin, rubber, or the like.

  It should be understood in the description of the present invention that the directions or positions indicated by the terms “upward”, “downward”, “vertical direction”, “internal”, “external”, etc. indicate based on the drawings. It does not imply or indicate that the apparatus or member referred to has a particular orientation or must be constructed or manipulated in a particular orientation, merely to explain the invention and It is intended to simplify the description and should not be construed as limiting the invention in any way.

  Moreover, the above description is merely a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. Accordingly, all changes and modifications within the scope equivalent to the scope of the present invention and the specification are intended to be covered by the claims of the present invention.

10: Stator 11: Substrate 12: Coil 20: Magnet 21: Shield 211: Recess 30: Connection member 40: Weight 50: Vibrator 60: Support member 70: Spring plate 80: Buffer member 81: Vibration buffer member 90: Upper cover 91: Lower cover

Claims (6)

A micro linear vibrator comprising a substrate, a magnet, a connection member and a support member,
One surface of the substrate is connected to a coil so as to constitute a stator, and one end of the coil is fixed to the substrate,
The magnet is installed above the coil and attracted or repels each other by the magnetic force of the coil and the magnetic force of the magnet, one surface of the magnet is connected to a shield, and the shield blocks the magnetic force generated by the magnet. The one surface of the shield is provided with a recess, and the recess surrounds the outside of the shield,
One surface of the connection member is connected to the shield to accommodate the magnet and the shield in the connection member, and the connection member includes at least one weight, and the at least one weight is the shield. And the connecting member,
One surface of the support member is connected to the substrate, and the coil, the magnet, the shield, the connection member, and the weight are accommodated between the support member and the substrate, and the support member and the connection member A spring plate and at least one buffer member are installed, one end of the spring plate is connected to the support member, the other end is connected to the connection member, and one end of the buffer member is connected to the support member The micro linear vibrator is connected, and the other end of the buffer member is connected to the connection member.   The micro linear vibrator according to claim 1, wherein the coil is welded to the substrate.   The micro linear vibrator according to claim 2, wherein the substrate is a printed circuit board.   The micro linear vibrator according to claim 1, wherein the magnet, the shield, the weight, and the connection member are riveted in order from the bottom to the top to form a vibrator.   The micro linear vibrator further includes an upper cover, and the upper cover is connected to the lower cover, and each structure described above is accommodated between the upper cover and the lower cover. The micro linear vibrator in any one of 1-4.   The micro linear vibrator according to claim 1, further comprising at least one vibration buffer member between the connection member and the substrate.

Images