JP2019134508A - Vibration motor - Google Patents

Abstract

To improve the vibration damping performance of a vibrating body in a vibrating body motor.SOLUTION: A vibration motor includes a vibrating body 5, a housing, and elastic members 6 and 7 that are leaf spring members that support the vibrating body so as to be able to vibrate in the lateral direction, and the elastic member includes at least three flat plate portions 61 and 71 arranged opposite to each other in the lateral direction, and connecting portions 62A and 62B connecting the ends of the flat plate portions adjacent to each other in the lateral direction, and first flat plate portions 611 and 711 that are the flat plate portions disposed at one side end in the lateral direction are fixed to the vibrating body, and second flat plate portion 612 712 that are the flat plate portions disposed at the other side end in the lateral direction are fixed to the inner wall of the housing, and at least one of the first flat plate portion and the second flat plate portion is provided with notches 611A, 612A, 711A, and 712A, and damper members 81A, 82A, 81B, and 82B are arranged in the notch.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vibration motor.

  Conventionally, various devices such as a smartphone are provided with a vibration motor. Here, Patent Document 1 discloses the following vibration generator.

  The vibration generator of Patent Document 1 includes a case, a stator, and a mover. The stator is composed of a yoke body, a pole piece, and an electromagnetic coil, and is fixed to the case. The mover is configured by fixing a permanent magnet, a magnetic body, and a weight to a tray-like support. The mover is supported by two arm portions of an elastic support member fixed to one side wall of the case so as to be swingable in a direction parallel to the stator.

  In addition, a wedge-shaped deformable member is disposed between the mover and the arm portion. The shape deformation member is provided for the purpose of damping the vibration of the mover.

JP 2010-179295 A

  Here, conventionally, as the elastic member provided in the vibration motor in which the vibrating body vibrates in the horizontal direction, a plate spring having a plurality of flat plate portions arranged in the horizontal direction may be used. Such a vibration motor does not improve the vibration damping performance of the vibrating body.

  In view of the above situation, an object of the present invention is to provide a vibration motor that uses a leaf spring in which flat plate portions are arranged to face each other in the lateral direction and that improves the vibration damping performance of a vibrating body.

An exemplary vibration motor of the present invention includes a vibrating body,
A housing,
An elastic member that is a leaf spring member that supports the vibrating body so as to vibrate laterally;
With
The elastic member has at least three flat plate portions arranged to face each other in the horizontal direction, and a connecting portion that connects end portions of the flat plate portions adjacent in the horizontal direction,
The first flat plate portion, which is the flat plate portion arranged at one end in the lateral direction, is fixed to the vibrating body,
The second flat plate portion, which is the flat plate portion arranged at the other side end in the lateral direction, is fixed to the inner wall of the housing,
At least one of the first flat plate portion and the second flat plate portion is provided with a notch,
A damper member is arranged in the notch.

  According to the exemplary vibration motor of the present invention, the vibration damping performance of the vibrating body can be improved in the vibration motor using the leaf spring in which the flat plate portions are arranged to face in the lateral direction.

FIG. 1 is an overall perspective view of a vibration motor according to an embodiment of the present invention as viewed from above. FIG. 2 is a schematic perspective view showing the configuration inside the housing of the vibration motor according to the embodiment of the present invention. FIG. 3A is a diagram illustrating an arrangement example of magnetic poles in the first magnet unit and the second magnet unit. FIG. 3B is a diagram illustrating another arrangement example of magnetic poles in the first magnet unit and the second magnet unit. FIG. 4 is a plan sectional view seen from above showing the configuration of the elastic member 6 side with the cover in the configuration shown in FIG. FIG. 5 is a diagram when the first flat plate portion or the second flat plate portion is viewed in the lateral direction in the configuration of FIG. 4. FIG. 6 is a plan sectional view corresponding to FIG. 4 according to the first modification. FIG. 7 is a view when the first flat plate portion or the second flat plate portion is viewed in the lateral direction in the configuration of FIG. 6. FIG. 8 is a cross-sectional plan view corresponding to FIG. 4 according to a second modification. FIG. 9 is a cross-sectional plan view corresponding to FIG. 4 according to a third modification. FIG. 10 is a diagram when the first flat plate portion or the second flat plate portion is viewed in the lateral direction in the configuration of FIG. 9. FIG. 11 is a schematic view showing a haptic device according to an embodiment of the present invention.

  Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. In the following drawings, the horizontal direction, which is the direction in which the vibrating body vibrates, is represented by the X direction. Specifically, one side in the horizontal direction is represented by the X1 direction, and the other side in the lateral direction is represented by the X2 direction. In addition, a vertical direction that is a direction orthogonal to the horizontal direction is represented as a Y direction. Specifically, one side in the vertical direction is represented as Y1 direction, and the other side in the vertical direction is represented as Y2 direction. In addition, a vertical direction (height direction) that is a direction orthogonal to the horizontal direction and the vertical direction is expressed as a Z direction. Specifically, the upper side is represented as the Z1 direction, and the lower side is represented as the Z2 direction. However, this definition of direction does not indicate the positional relationship and direction when incorporated in an actual device.

<1. Overall configuration of vibration motor>
FIG. 1 is an overall perspective view of a vibration motor 100 according to an embodiment of the present invention as viewed from above. FIG. 2 is a schematic perspective view showing a configuration inside the housing of the vibration motor 100.

  The vibration motor 100 includes a stationary part S, a vibrating body 5, and a pair of elastic members 6 and 7. The stationary part S includes a housing 1, a substrate 2, and a coil part L.

  The housing 1 includes a base plate 11 and a cover 12. The base plate 11 is a plate-like member extending in the horizontal direction, and has a protruding base portion 11A at one end portion in the horizontal direction. The cover 12 has a top surface portion 121 located above and side portions extending downward from the four sides of the top surface portion 121. The side portions include side portions 12A and 12B that face each other in the lateral direction. The cover 12 is attached to the base plate 11 from above. The housing 1 accommodates the substrate 2, the coil portion L, the vibrating body 5, and the elastic members 6 and 7 inside.

  The board | substrate 2 is fixed to the upper surface of the baseplate 11, and is comprised by FPC (flexible printed circuit board). The substrate 2 may be a rigid substrate. The board | substrate 2 is extended in a horizontal direction, and a horizontal direction one side edge part is arrange | positioned on 11 A of protrusion base parts. Terminals 21 </ b> A and 21 </ b> B are provided at the end of the substrate 2.

  Coil portion L includes winding portion 3 and a core (not shown). The core is configured by laminating thin plates in the vertical direction. The winding part 3 is configured by winding a conducting wire around a core. The coil portion L is fixed to the upper surface of the base plate 11.

  One lead wire of the winding part 3 is electrically connected to the terminal 21A, and the other lead wire is electrically connected to the terminal 21B. Thereby, by applying a voltage to the terminals 21 </ b> A and 21 </ b> B from the outside of the vibration motor 100, a current can be passed through the winding part 3 to drive the coil part L. By controlling the current flowing through the winding part 3, the coil part L generates a north pole on one side in the horizontal direction and a south pole on the other side in the horizontal direction, and a south pole on the one side in the horizontal direction and the other side in the horizontal direction. The state where the N pole is generated on the side is switched. That is, the coil portion L generates a lateral magnetic flux.

  The vibrating body 5 includes a first plate 52, a second plate 53, a first magnet part M1, a second magnet part M2, a first magnetic piece 57A, a second magnetic piece 57B, and a third magnetic piece 57C. And a fourth magnetic piece 57D, a first weight part 59A, a second weight part 59B, a first damper part 58A, and a second damper part 58B.

  The first plate 52 includes a side plate portion 52A that extends in the horizontal direction and a side plate portion 52B that is connected to one side end portion in the horizontal direction of the side plate portion 52A and extends to one side in the vertical direction. The third plate 53 includes a side plate portion 53A that extends in the horizontal direction and a side plate portion 53B that is connected to the other side end of the side plate portion 53A and extends to the other side in the vertical direction. The side plate portion 52A and the side plate portion 53A face each other in the vertical direction. The side plate portion 52B and the side plate portion 53B face each other in the lateral direction.

  The first magnet part M <b> 1 extending in the lateral direction is fixed to the inner side surface of the side plate part 53 </ b> A of the second plate 53. The second magnet part M <b> 2 extending in the lateral direction is fixed to the inner side surface of the side plate part 52 </ b> A of the first plate 52. The first magnet part M1 and the second magnet part M2 are arranged so as to sandwich the coil part L from both sides in the vertical direction. The first weight part 59A and the second weight part 59B are arranged so as to sandwich the first magnet part M1 and the second magnet part M2 from both lateral sides.

  The first magnetic piece 57A is disposed between the first weight portion 59A and the other end portion in the lateral direction of the first magnet portion M1. The second magnetic piece 57B is disposed between the first weight portion 59A and the other end portion in the lateral direction of the second magnet portion M2. The first magnetic piece 57A and the second magnetic piece 57B are arranged with a gap in the vertical direction. The third magnetic piece 57C is disposed between the second weight portion 59B and the one end portion in the lateral direction of the first magnet portion M1. The fourth magnetic piece 57D is disposed so as to be sandwiched between the second weight portion 59B and one lateral end portion of the second magnet portion M2. The third magnetic piece 57C and the fourth magnetic piece 57D are arranged with a gap in the vertical direction.

  Here, FIG. 3A is a diagram illustrating an arrangement example of magnetic poles in the first magnet part M1 and the second magnet part M2. The first magnet unit M1 includes a first magnet 54A, a second magnet 55A, and a third magnet 56A. The third magnet 56A is disposed between the first magnet 54A and the second magnet 55A from both sides in the lateral direction.

  The first magnet 54A has an N pole on the other side in the horizontal direction and an S pole on the one side in the horizontal direction. The second magnet 55A has an S pole on the other side in the horizontal direction and an N pole on the one side in the horizontal direction. That is, the first magnet 54A and the second magnet 55A have the directions of magnetic fluxes in opposite lateral directions.

  The third magnet 56A has an N pole on one side in the vertical direction and an S pole on the other side in the vertical direction. That is, the third magnet 56A has the direction of magnetic flux in the vertical direction.

  As a result, the first magnet portion M1, the first magnetic piece 57A, and the third magnetic piece 57C constitute a magnetic circuit in the direction of magnetic flux indicated by an arrow in FIG. 3A. Since the first magnet part M1 and the coil part L are disposed to face each other in the vertical direction, the magnetic flux can be concentrated on the coil part L side by the so-called Halbach structure in the first magnet part M1. Note that leakage of magnetic flux can be suppressed by using the first magnetic piece 57A and the third magnetic piece 57C.

  Similarly, the second magnet portion M2 includes a first magnet 54B, a second magnet 55B, and a third magnet 56B. The third magnet portion 56B is disposed between the first magnet 54B and the second magnet 55B from both sides in the lateral direction.

  The first magnet 54B has an N pole on the other side in the horizontal direction and an S pole on the one side in the horizontal direction. The second magnet 55B has an S pole on the other side in the horizontal direction and an N pole on the one side in the horizontal direction. That is, the first magnet 54B and the second magnet 55B have the directions of magnetic fluxes in the opposite lateral directions.

  The third magnet 56B has an S pole on one side in the vertical direction and an N pole on the other side in the vertical direction. That is, the third magnet 56B has the direction of magnetic flux in the vertical direction.

  The 2nd magnet part M2 and the coil part L are arrange | positioned facing the vertical direction. The arrangement of the magnetic poles in the second magnet part M2 as described above forms a Halbach array structure. Thereby, the magnetic circuit of the direction of the magnetic flux shown by the arrow in FIG. 3A is configured, and the magnetic flux can be concentrated on the coil portion L side.

  The arrangement of the magnetic poles in the first magnet part M1 and the second magnet part M2 may be as shown in FIG. 3B. In the form of FIG. 3B, the first magnets 54A and 54B and the second magnets 55A and 55B are arranged with magnetic poles such that the direction of magnetic flux is opposite to that in FIG. 3A. 3B, the magnetic poles of the third magnets 56A and 56B are arranged such that the direction of the magnetic flux is opposite to that in FIG. 3A. Also by this, a Halbach structure is formed, a magnetic circuit in the direction of the magnetic flux indicated by an arrow in FIG. 3B is formed, and the magnetic flux can be concentrated on the coil portion L side.

  Further, the first damper portion 58A is disposed between the first magnetic piece 57A and the second magnetic piece 57B in the vertical direction, and is fixed to the first weight portion 59A. The second damper portion 58B is disposed between the third magnetic piece 57C and the fourth magnetic piece 57D in the vertical direction, and is fixed to the second weight portion 59B.

  Both the elastic member 6 and the elastic member 7 are leaf spring members. The other end portion in the lateral direction of the elastic member 6 is fixed to the inner wall surface of the side surface portion 12A of the case 12, and the one end portion in the horizontal direction of the elastic member 6 is fixed to the side plate portion 53B. One end portion in the horizontal direction of the elastic member 7 is fixed to the inner wall surface of the side surface portion 12B of the case 12, and the other end portion in the horizontal direction of the elastic member 7 is fixed to the side plate portion 52B. Accordingly, the vibrating body 5 is supported by the elastic members 6 and 7 so as to be able to vibrate laterally with respect to the housing 1.

  The detailed configuration of the elastic members 6 and 7 will be described later. The elastic member 6 is provided with a first damper member 81A and a second damper member 82A, and the elastic member 7 is provided with a first damper member 81B and a second damper member 82B. .

  The operation of the vibration motor 100 configured as described above will be described. The state of FIG. 2 is a state where the coil portion L is not energized and the vibrating body 5 is stationary. From this state, the vibration body 5 can be vibrated in the lateral direction by performing control for switching the magnetic pole generated in the coil portion L by energization control.

  In the case of normal operation, the vibrating body 5 vibrates by being displaced to such an extent that the first damper portion 58A and the second damper portion 58B do not contact the coil portion L. If the vibrating body 5 is excessively displaced by dropping the vibration motor 100 or the like, the first damper portion 58A or the second damper portion 58B comes into contact with the coil portion L. It is possible to avoid the occurrence of noise due to collision.

<2. Elastic member and damper member>
Here, the elastic members 6 and 7 will be described in detail. FIG. 4 is a plan sectional view seen from above showing the configuration on the elastic member 6 side together with the cover 12 in the configuration shown in FIG.

  The elastic member 6 includes a plurality of flat plate portions 61, a plurality of connecting portions 62A, and a plurality of connecting portions 62B. In FIG. 4, six flat plate portions 61 are provided as an example, and the flat plate portions 61 are arranged side by side in the horizontal direction. That is, the flat plate portions 61 adjacent in the horizontal direction are opposed to each other in the horizontal direction. The flat plate portion 61 has a shape extending in the vertical direction when the vibrating body 5 is stationary (the state shown in FIG. 4). The stationary state of the vibrating body 5 indicates a non-operating state in which the coil portion L is not energized and the vibrating body 5 is not vibrating.

  The longitudinal direction one side edge parts of the flat plate part 61 adjacent to the horizontal direction are connected by the connection part 62A. The other ends in the vertical direction of the flat plate portions 61 adjacent in the horizontal direction are connected by a connecting portion 62B. The connecting portion 62A is bent to one side in the vertical direction. The connecting portion 62B is bent to the other side in the vertical direction. The flat plate portion 61 is alternately connected by the connecting portions 62A and 62B as it proceeds in the lateral direction. In other words, in the example of FIG. 4, three connecting portions 62A are arranged in the horizontal direction on one side in the vertical direction, and two connecting portions 62B are arranged in the horizontal direction on the other side in the vertical direction.

  A first flat plate portion 611 located at one lateral end of the flat plate portion 61 is fixed to the side plate portion 53B, and a second flat plate portion 612 located at the other lateral end of the flat plate portion 61 is a side portion of the case 12. It is fixed to the inner wall of 12A.

  Here, FIG. 5 is a view when the first flat plate portion 611 or the second flat plate portion 612 is viewed in the horizontal direction. The 1st flat plate part 611 has the notch 611A of the shape notched from the upper edge to the lower side (refer also FIG. 2). The first damper member 81A is disposed in the notch 611A. The first damper member 81A is fixed to the side plate portion 53B and is not fixed to the flat plate portion 61 that is adjacent to the first flat plate portion 611 in the lateral direction. The first damper member 81A is fixed to the side plate portion 53B with, for example, a double-sided tape.

  The 2nd flat plate part 612 has the notch 612A of the shape notched from the upper side edge to the lower side (refer also FIG. 2). The second damper member 82A is disposed in the notch 612A. The second damper member 82A is fixed to the inner wall of the side surface portion 12A, and is not fixed to the flat plate portion 61 that is adjacent to the second flat plate portion 612 in the lateral direction. The second damper member 82A is fixed to the side surface portion 12A by, for example, a double-sided tape.

  As shown in FIG. 2, similarly to the elastic member 6, the elastic member 7 is a leaf spring member including a plurality of flat plate portions 71 arranged side by side in the lateral direction. The 2nd flat plate part 712 located in the horizontal direction one side edge among the flat plate parts 71 is fixed to the inner wall of the side part 12B of the case 12. The 1st flat plate part 711 located in the horizontal direction other side edge among the flat plate parts 71 is fixed to the side plate part 52B.

  The first flat plate portion 711 has a cutout 711A having a shape cut out from the upper edge to the lower side. The first damper member 81B is disposed in the notch 711A. The first damper member 81B is fixed to the side plate portion 52B and is not fixed to the flat plate portion 71 adjacent to the first flat plate portion 711 in the lateral direction. The first damper member 81B is fixed to the side plate portion 52B with, for example, a double-sided tape.

  The second flat plate portion 712 has a cutout 712A having a shape cut out from the upper edge to the lower side. The second damper member 82B is disposed in the notch 712A. The second damper member 82B is fixed to the inner wall of the side surface portion 12B, and is not fixed to the flat plate portion 71 that is adjacent to the second flat plate portion 712 in the lateral direction. The second damper member 82B is fixed to the side surface portion 12B with, for example, a double-sided tape.

  As described above, by using the first damper members 81A and 81B and the second damper members 82A and 82B, the vibration attenuation of the vibrating body 5 can be increased and stable vibration can be ensured. That is, the vibration damping performance of the vibrating body 5 can be improved. Further, by providing resistance to the elastic members 6 and 7 by the first damper members 81A and 81B and the second damper members 82A and 82B, the elastic members 6 and 7 are prevented from being bent in the vertical direction, and the vibrating body 5 Can be prevented from contacting the cover 12. Further, since the elastic member 6 includes two damper members 81A and 82A and the elastic member 7 includes two damper members 81B and 82B, the vibration motor 100 can be assembled by suppressing the number of damper members used. Can be improved.

  For example, in the case of the elastic member 6, notches 611A and 612A are formed in both the first flat plate portion 611 and the second flat plate portion 612, and the first damper member 81A and the second damper are respectively provided in the notches 611A and 612A. Since the member 82A is disposed, the vibration damping performance can be further improved.

  Further, for example, the notches 611A and 612A of the elastic member 6 are notched from the upper edge to the lower side, so that the position of the notch is, for example, the longitudinal center position of the flat plate portion as shown in FIG. Can do. Thereby, the arrangement of the first damper member 81A and the second damper member 82A can be arranged such that the elastic member 6 can expand and contract with good balance when the vibrating body 5 vibrates. Further, since the first damper member 81A and the second damper member 82A can be inserted and assembled into the notches 611A and 612A from the upper side, the assemblability of the damper member is improved.

  Note that the cutouts 611A and 612A may be cut out from the lower edge to the upper side. Even in this case, the same effects as described above can be obtained.

  For example, for the elastic member 6, the first damper member 81 </ b> A is fixed to the side plate portion 53 </ b> B, that is, the vibrating body 5. If the first damper member 81A is fixed to the flat plate portion 61 adjacent to the first flat plate portion 611, the fixing surface of the flat plate portion 61 may be bent and stable fixing may not be maintained. Since the fixing surface is not deformed when it is fixed to the vibrating body 5 as in this embodiment, a stable fixing strength can be ensured. Further, in the actual fixing operation with a double-sided tape or the like, the fixing surface may be deformed by pressing the first damper member 81A or the like when fixed to the flat plate portion 61, but when fixing to the vibrating body 5 side, Since there is no such concern, it can be fixed more reliably.

  For example, for the elastic member 6, the second damper member 82 </ b> A is fixed to the inner wall of the side surface portion 12 </ b> A, that is, the inner wall of the housing 1. If the second damper member 82A is fixed to the flat plate portion 61 adjacent to the second flat plate portion 612, the fixing surface of the flat plate portion 61 may be bent, so that stable fixing may not be maintained. Since the fixing surface is not deformed when it is fixed to the housing 1 as in this embodiment, a stable fixing strength can be ensured. Further, in actual fixing work with a double-sided tape or the like, the fixing surface may be deformed by pressing the second damper member 82A and the like when it is fixed to the flat plate portion 61. Since there is no such concern, it can be fixed more reliably.

  For example, for the elastic member 6, the first damper member 81A and the second damper member 82A may be fixed only to the flat plate portion 61 side. As described above, the first damper member 81A is applied to only one of the vibrating body 5 side and the flat plate portion 61 side, and the second damper member 82A is applied to only one of the housing 1 side and the flat plate portion 61 side by double-sided tape. When fixed, the damper member is easily fixed. However, it is also possible to fix the first damper member 81A to both the vibrating body 5 side and the flat plate portion 61 side, and the second damper member 82A to both the housing 1 side and the flat plate portion 61 side.

  As shown in FIG. 1, the top surface 121 of the cover 12 is formed with through holes 121 </ b> A to 121 </ b> D penetrating in the vertical direction. The through hole 121A is disposed above the first damper member 81A and faces the first damper member 81A in the vertical direction. The through hole 121B is disposed above the second damper member 82A and faces the second damper member 82A in the vertical direction. The through hole 121C is disposed above the first damper member 81B and faces the first damper member 81B in the vertical direction. The through hole 121D is disposed above the second damper member 82B and faces the second damper member 82B in the vertical direction.

  As a result, when the vibration motor 100 is assembled, the damper members 81A, 82A, 82A, 82A, and the damper members 81A, 82A, 81B and 82B can be assembled. When the damper member is assembled first, the damper member may be deformed when assembling other members, but by assembling using the through holes 121A to 121D in this way, the deformation of the damper member is suppressed, The damper member can be easily assembled.

  As described above, when the notch has a shape cut out from the lower edge to the upper side, a through hole located below the damper member may be provided in the base plate 11.

<3. First Modification>
Hereinafter, various modifications of the elastic member 6, the first damper member 81A, and the second damper member 82A will be described. Note that this modification can be applied to the elastic member 7 as well, and the following description will particularly describe differences from the above-described embodiment.

  FIG. 6 is a top view cross-sectional view corresponding to FIG. 4 and showing the elastic member 6, the first damper member 81A, and the second damper member 82A according to the first modification. Moreover, FIG. 7 is a figure at the time of seeing the 1st flat plate part 611 or the 2nd flat plate part 612 in the elastic member 6 which concerns on a 1st modification in the horizontal direction.

  In the elastic member 6 according to the first modified example, the first flat plate portion 611 is formed with a notch 611B as a window portion opened inside the first flat plate portion 611, and the second flat plate portion 612 includes a second notch. A notch 612 </ b> B is formed as a window portion opened inside the flat plate portion 612. That is, the window is a closed space and is not connected to the outside. The first damper member 81A is disposed in the notch 611B, and the second damper member 82A is disposed in the notch 612B.

  Since the notches 611B and 612B have a window shape, the position of the notch can be set to the longitudinal center position of the flat plate portion as shown in FIG. 6, for example. Thereby, the arrangement of the first damper member 81A and the second damper member 82A can be arranged such that the elastic member 6 can expand and contract with good balance when the vibrating body 5 vibrates.

<4. Second Modification>
FIG. 8 is a top view sectional view corresponding to FIG. 4 showing the elastic member 6, the first damper member 81A, and the second damper member 82A according to the second modification.

  In the elastic member 6 according to the second modification, the first flat plate portion 611 has a notch 611C, and the second flat plate portion 612 has a notch 612C. The notch 611C is a space adjacent to the other side in the vertical direction of the first flat plate portion 611, and the notch 612C is a space adjacent to the one side in the vertical direction of the second flat plate portion 612. That is, the first flat plate portion 611 has a shape in which a part on the other side in the vertical direction is partially deleted, and the second flat plate portion 612 has a shape in which a part on the one side in the vertical direction is deleted.

  The first damper member 81A is disposed in the notch 611C, and the second damper member 82A is disposed in the notch 612C. Accordingly, the first damper member 81A and the second damper member 82A can be disposed at positions shifted in the vertical direction, and the elastic member 6 can be expanded and contracted with good balance when the vibrating body 5 vibrates. Moreover, if the through-hole provided in the top | upper surface part 121 of the case 12 or the baseplate 11 opposes the 1st damper member 81A and the 2nd damper member 82A in the up-down direction, a damper member will be assembled | attached through a through-hole. Is easy.

  In addition, you may arrange | position the notch comprised as the above spaces in the edge part of the same side of the vertical direction with the 1st flat plate part 611 and the 2nd flat plate part 612. FIG.

<5. Third Modification>
FIG. 9 is a top view cross-sectional view corresponding to FIG. 4 showing the elastic member 6, the first damper member 81A, and the second damper member 82A according to the third modification. Moreover, FIG. 10 is a figure at the time of seeing the 1st flat plate part 611 or the 2nd flat plate part 612 in the elastic member 6 which concerns on a 3rd modification in the horizontal direction.

  In the elastic member 6 according to the third modification, the first flat plate portion 611 is formed with a notch 611D having a shape cut out from the other longitudinal edge of the first flat plate portion 611 to the one longitudinal direction, The flat plate portion 612 is formed with a cutout 612D having a shape cut out from one longitudinal edge of the second flat plate portion 612 to the other longitudinal direction. The first damper member 81A is disposed in the notch 611D, and the second damper member 82A is disposed in the notch 612D.

  Accordingly, the first damper member 81A and the second damper member 82A can be disposed at positions shifted in the vertical direction, and the elastic member 6 can be expanded and contracted with good balance when the vibrating body 5 vibrates.

<6. Tactile device>
As shown in FIG. 11, the vibration motor 100 can be mounted on the haptic device 200, for example. The tactile device 200 gives a tactile stimulus to a person who operates the tactile device 200 by the vibration of the vibration motor 100. As the haptic device 200, for example, a mobile phone including a smartphone, a tablet, a game device, and a wearable terminal can be employed.

  The haptic device 200 according to the present embodiment includes the vibration motor 100, a substrate 110 on which the vibration motor 100 is mounted, and a control unit 120. The vibration motor 100 is electrically and mechanically connected to the substrate 110. The control unit 120 outputs a drive current to the vibration motor 100 via the substrate 110. The vibration motor 100 vibrates according to a drive signal from the control unit 120. The tactile device 200 vibrates so as to give a tactile stimulus to a person who operates the tactile device 200 by the vibration of the vibration motor 100.

<7. Effects according to this embodiment>
As described above, the vibration motor 100 according to the present embodiment includes the vibrating body 5, the housing 1, and the elastic member 6 that is a leaf spring member that supports the vibrating body 5 so as to vibrate in the lateral direction. The elastic member 6 includes at least three flat plate portions 61 arranged to face each other in the horizontal direction, and connecting portions 62A and 62B that connect end portions of the flat plate portions 61 adjacent in the horizontal direction. A first flat plate portion 611 that is the flat plate portion 61 disposed at one end in the horizontal direction is fixed to the vibrating body 5 and a second flat plate portion 612 that is the flat plate portion 61 disposed at the other end in the horizontal direction. Is fixed to the inner wall of the housing 1. At least one of the first flat plate portion 611 and the second flat plate portion 612 is provided with a notch (611A, 612A, etc.), and damper members 81A, 82A are disposed in the notch.

  The damper member can improve the vibration damping performance of the vibrating body. Moreover, assembly property can be improved by suppressing the number of damper members.

  Also, the notches (611A, 612A, etc.) are provided in both the first flat plate portion 611 and the second flat plate portion 612. Thereby, vibration damping performance can be improved more by providing two damper members.

  Further, at least one of the notches 611A and 612A has a shape that is notched downward from the upper edge of the flat plate portions 611 and 612, or a shape that is notched upward from the lower edge of the flat plate portions 611 and 612.

  Thereby, the arrangement of the damper member can be an arrangement in which the elastic member expands and contracts in a well-balanced manner when the vibrating body vibrates. Further, since the damper member can be inserted into the notch from the upper side or the lower side, the assembling property of the damper member is improved.

  Further, at least one of the notches 611B and 612B is a window portion that opens inside the flat plate portions 611 and 612.

  Thereby, the arrangement of the damper member can be an arrangement in which the elastic member expands and contracts in a well-balanced manner when the vibrating body vibrates.

  The notch 611C provided in the first flat plate portion 611 is a space adjacent to the first flat plate portion 611 on the other side in the vertical direction, and the notch 612C provided in the second flat plate portion 612. Is a space adjacent to the second flat plate portion 612 on one side in the longitudinal direction.

  Thereby, the arrangement of the damper member can be an arrangement in which the elastic member expands and contracts in a well-balanced manner when the vibrating body vibrates. Further, since the damper member can be easily inserted into the space, the assembling property of the damper member is improved.

  In addition, the damper member 81 </ b> A disposed in the notch (611 </ b> A or the like) provided in the first flat plate portion 611 is fixed to the vibrating body 5.

  Since the fixing surface is not deformed when fixed to the vibrating body 5 side, a stable fixing strength can be secured. Further, in the fixing operation, the vibration member side can be fixed more reliably because there is little fear of deformation even if the damper member is pressed.

  Also, the damper member 82A disposed in the notch (612A or the like) provided in the second flat plate portion 612 is fixed to the inner wall.

  Since the fixing surface is not deformed when fixed to the inner wall side of the housing, stable fixing strength can be secured. Further, in the fixing operation, the housing side can be fixed more reliably because there is little fear of deformation even if the damper member is pressed.

  In addition, the damper member 81A disposed in the notch (611A or the like) provided in the first flat plate portion 611 includes one of the vibrating body 5 and the flat plate portion 61 adjacent to the first flat plate portion 611. Only fixed with double-sided tape. Thereby, it becomes easy to fix the damper member.

  Further, the damper member 82A disposed in the notch (612A or the like) provided in the second flat plate portion 612 is provided on only one of the inner wall and the flat plate portion 61 adjacent to the second flat plate portion 612. Fixed with double-sided tape. Thereby, it becomes easy to fix the damper member.

  The housing 1 has through holes 121A and 121B that face the damper members 81A and 82A in the vertical direction.

  When assembling the vibration motor, the damper member can be assembled from the outside of the casing through the through hole in a state where the elastic member and the vibrating body are assembled inside the casing. Therefore, it is possible to easily assemble the damper member while suppressing deformation of the damper member.

  In addition, the haptic device 200 according to the present embodiment includes the vibration motor 100 having any one of the above configurations. Thereby, appropriate tactile feedback can be given to the user who uses the tactile device.

<8. Other>
As mentioned above, although embodiment of this invention was described, if it is in the range of the meaning of this invention, embodiment may be variously deformed.

  The present invention can be used for a vibration motor provided in, for example, a smartphone, a wearable device, and the like.

  DESCRIPTION OF SYMBOLS 100 ... Vibration motor, S ... Static part, 1 ... Housing, 11 ... Base plate, 12 ... Cover, 2 ... Substrate, L ... Coil part, 3 ... Winding part, 5 ... vibrating body, 52 ... first plate, 53 ... second plate, M1 ... first magnet part, M2 ... second magnet part, 54A, 54B ... -1st magnet, 55A, 55B ... 2nd magnet, 56A, 56B ... 3rd magnet, 57A ... 1st magnetic piece, 57B ... 2nd magnetic piece, 57C ... 3rd magnetism Piece, 57D ... 4th magnetic piece, 58A ... 1st damper part, 58B ... 2nd damper part, 59A ... 1st weight part, 59B ... 2nd weight part, 6, 7 ... Elastic members, 61, 71 ... Flat plate portions, 62A, 62B ... Connection portions, 611, 711 ... First flat plate portions, 612, 71 ... 2nd flat plate part, 611A to 611D ... Notch, 612A to 612D ... Notch, 711A, 712A ... Notch, 81A, 81B ... 1st damper member, 82A, 82B ..Second damper member, 110 ... substrate, 120 ... control unit, 200 ... tactile device

Claims (11)

A vibrating body,
A housing,
An elastic member that is a leaf spring member that supports the vibrating body so as to vibrate laterally;
With
The elastic member has at least three flat plate portions arranged to face each other in the horizontal direction, and a connecting portion that connects end portions of the flat plate portions adjacent in the horizontal direction,
The first flat plate portion, which is the flat plate portion arranged at one end in the lateral direction, is fixed to the vibrating body,
The second flat plate portion, which is the flat plate portion arranged at the other side end in the lateral direction, is fixed to the inner wall of the housing,
At least one of the first flat plate portion and the second flat plate portion is provided with a notch,
A damper member is disposed in the notch,
Vibration motor.   The vibration motor according to claim 1, wherein the notch is provided in both the first flat plate portion and the second flat plate portion.   3. The vibration motor according to claim 2, wherein at least one of the cutouts has a shape cut out from the upper edge of the flat plate portion to the lower side or a shape cut out from the lower edge of the flat plate portion to the upper side.   4. The vibration motor according to claim 2, wherein at least one of the notches is a window portion that opens into the flat plate portion. 5. The notch provided in the first flat plate portion is a space adjacent to the first flat plate portion on the other side in the vertical direction,
The notch provided in the second flat plate portion is a space adjacent to the second flat plate portion on one side in the vertical direction.
The vibration motor according to claim 2.   6. The vibration motor according to claim 1, wherein the damper member disposed in the notch provided in the first flat plate portion is fixed to the vibrating body. 7.   The vibration motor according to any one of claims 1 to 6, wherein the damper member disposed in the notch provided in the second flat plate portion is fixed to the inner wall.   The damper member disposed in the notch provided in the first flat plate portion is fixed to only one of the vibrating body and the flat plate portion adjacent to the first flat plate portion by a double-sided tape. The vibration motor according to any one of claims 1 to 7.   The damper member disposed in the notch provided in the second flat plate portion is fixed to the inner wall and only one of the flat plate portions adjacent to the second flat plate portion with a double-sided tape. The vibration motor according to claim 1.   10. The vibration motor according to claim 1, wherein the casing has a through-hole facing the damper member in a vertical direction.   A tactile device having the vibration motor according to claim 1.

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