Vibration generating device

Abstract

A vibration generating device (101) is provided with: elastic support members (7) (a left elastic support member (7L) and a right elastic support member (7R)) that support a movable-side member (MB) so as to be capable of vibrating with respect to a fixed-side member (FB); and a drive unit (DM) that includes a coil (4) as a fixed-side member (FB) and a movable-side magnetic field generation member (5) as a movable-side member (MB), and that applies a vibration force to the movable-side member (MB). The right elastic support member (7R) includes a right fixed portion (7R5) fixed to the fixed side member (FB), a right deformed portion (7RT) having one end connected to the right fixed portion (7R5), and a right standing portion (7R1) extending in the vertical direction from the other end of the right deformed portion (7RT). The movable member (MB) is attached to the right standing portion (7R1) so as to be disposed at a position higher than the upper end of the right deformation portion (7RT), and the lower portion of the movable member (MB) is located at a position on the upper side of the right deformation portion (7RT) when the movable member (MB) vibrates and is displaced to the right side.

Description

Technical Field

[0001] The present disclosure relates to a vibration generating device. Background Art

[0002] Conventionally, there is known a vibration motor (vibration generating device) including leaf springs as elastic members (elastic supporting members) on the left and right sides of a movable portion that vibrates in the left-right direction (see Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2010-207725 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, in the structure disclosed in Patent Document 1, the size of the vibration generating device in the vibration direction may become large.

[0008] Therefore, it is desirable to provide a vibration generating device capable of suppressing an increase in size in a vibration direction.

[0009] Means for solving problems

[0010] The vibration generating device according to the embodiment of the present disclosure includes: a fixed side component and a movable side component; an elastic support component that supports the movable side component so that it can vibrate in the left-right direction relative to the fixed side component; and a driving unit, including: a fixed side magnetic field generating component included in the fixed side component, and a movable side magnetic field generating component included in the movable side component, the driving unit applies a vibration force in the left-right direction to the movable side component, the elastic support component includes a left elastic support component and a right elastic support component, the right elastic support component includes: a right fixed portion fixed to the fixed side component; a right deformable portion, one end of which is connected to the right fixed portion and extends in the front-rear direction; and a right upright portion extending from the other end of the right deformable portion in the up-down direction, the movable side component is mounted on the right elastic support component in a manner that is arranged on the left side of the right upright portion and at a position higher than the upper end of the right deformable portion, and when the movable side component is displaced to the right, the lower portion of the movable side component is located on the upper side of the right deformable portion and does not interfere with the right deformable portion.

[0011] Effects of the Invention

[0012] The above-mentioned vibration generating device can suppress an increase in size in the vibration direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a diagram showing a configuration example of a vibration generating device.

[0014] Figure 2 It is an exploded perspective view of the vibration generating device.

[0015] Figure 3 It is a six-sided view of the elastic support component.

[0016] Figure 4 It is a perspective view of the movable side member and the elastic support member.

[0017] Figure 5 These are the front view and bottom view of the movable side member and the elastic support member.

[0018] Figure 6 2 are a top view and a cross-sectional view of the vibration generating device.

[0019] Figure 7 It is a top view of the coil, the movable side member and the elastic support member.

[0020] Figure 8 This is a front view of the coil, the movable side member and the elastic support member.

[0021] Fig. 9 It is a perspective view of the movable side member and the elastic support member. DETAILED DESCRIPTION

[0022] Hereinafter, a vibration generator 101 according to an embodiment of the present disclosure will be described with reference to the drawings. Figure 1 1 is a diagram showing a configuration example of the vibration generating device 101. Specifically, Figure 1 The above figure is a three-dimensional diagram of the vibration generating device 101. Figure 1 The figure below is an exploded stereoscopic view of the vibration generating device 101. Figure 2 It is a more detailed exploded perspective view of the vibration generating device 101.

[0023] Figure 1 and Figure 2X1 in each of them represents one direction of the X-axis constituting the three-dimensional orthogonal coordinate system, and X2 represents another direction of the X-axis. In addition, Y1 represents one direction of the Y-axis constituting the three-dimensional orthogonal coordinate system, and Y2 represents another direction. Similarly, Z1 represents one direction of the Z-axis constituting the three-dimensional orthogonal coordinate system, and Z2 represents another direction of the Z-axis. In the present embodiment, the X1 side of the vibration generating device 101 is equivalent to the front side (front side) of the vibration generating device 101, and the X2 side of the vibration generating device 101 is equivalent to the rear side (back side) of the vibration generating device 101. In addition, the Y1 side of the vibration generating device 101 is equivalent to the left side of the vibration generating device 101, and the Y2 side of the vibration generating device 101 is equivalent to the right side of the vibration generating device 101. Moreover, the Z1 side of the vibration generating device 101 is equivalent to the upper side of the vibration generating device 101, and the Z2 side of the vibration generating device 101 is equivalent to the lower side of the vibration generating device 101. The same applies to other drawings.

[0024] The vibration device VE has a control unit CTR and a vibration generating device 101. The vibration generating device 101 is inserted into a slender cylindrical object such as a stylus, and is configured to vibrate in the radial direction (short side direction) of the cylindrical object. Therefore, the vibration generating device 101 is preferably constructed so that the length dimension in the vibration direction is as small as possible as long as the desired vibration power can be achieved. Specifically, the vibration generating device 101 has a frame HS as a box-shaped shell, a movable side component MB accommodated in the frame HS, a non-magnetic metal plate 3 mounted on the frame HS, and a coil 4 mounted on the frame HS via an insulating substrate BM. The frame HS, the non-magnetic metal plate 3 and the coil 4 constitute a fixed side component FB. The control unit CTR is connected to an input terminal IT provided on the insulating substrate BM, and the insulating substrate BM is fixed to the frame HS via an adhesive. In the present embodiment, the insulating substrate BM is a combination of a flexible substrate and a rigid substrate. However, the insulating substrate BM may also be a rigid-flexible substrate, etc. In addition, Figure 1 The dotted line connecting the control unit CTR and the input terminal IT provided on the insulating substrate BM in the above figure schematically indicates that the control unit CTR and the input terminal IT are electrically connected.

[0025] like Figure 1 As shown in the above figure, the frame HS has a substantially rectangular parallelepiped shape, and the surface (upper surface and lower surface) parallel to the XY plane is larger in area than the other surfaces. In the present embodiment, the frame HS is composed of a cover 1 and a bottom plate 2. The cover 1 is formed of a non-magnetic metal such as austenitic stainless steel. However, the cover 1 may also be formed of a synthetic resin or a magnetic metal.

[0026] like Figure 1As shown in the figure below, the cover 1 is constructed by bending a metal plate to form five surfaces (upper surface, front surface, left surface, rear surface and right surface) of the frame HS. Specifically, the cover 1 includes a cylindrical portion 1A in the shape of a roughly rectangular cylinder and a top plate portion 1B in the shape of a roughly rectangular flat plate. The cylindrical portion 1A includes a front side plate portion 1A1, a left side plate portion 1A2, a rear side plate portion 1A3 and a right side plate portion 1A4. More specifically, the cylindrical portion 1A has a front side plate portion 1A1 and a rear side plate portion 1A3 that are opposite to each other, and a left side plate portion 1A2 and a right side plate portion 1A4 that are perpendicular to the front side plate portion 1A1 and the rear side plate portion 1A3 and are opposite to each other.

[0027] The bottom plate 2 is configured to form the lower surface (bottom surface) of the frame HS. In the present embodiment, the bottom plate 2 constitutes a bottom plate portion in the shape of a substantially rectangular flat plate. In the illustrated example, the bottom plate 2 is formed of a magnetic metal and functions as a fixed-side magnetic component. The bottom plate 2 as a fixed-side magnetic component is configured to be able to control the path of the magnetic field lines of the magnetic field generated by the movable-side magnetic field generating component 5. In addition, the bottom plate 2 as a fixed-side magnetic component is a component constituting the driving mechanism DM. However, the bottom plate 2 can also be formed of a non-magnetic metal such as austenitic stainless steel.

[0028] The cover 1 is fixed to the bottom plate 2. Specifically, the cover 1 is joined to the bottom plate 2 by welding the lower end of the cylindrical portion 1A to the bottom plate 2. The lower end of the cylindrical portion 1A and the bottom plate 2 may also be joined by brazing, adhesive, or riveting. In addition, the insulating substrate BM is joined to the upper surface of the bottom plate 2 by an adhesive.

[0029] The non-magnetic metal plate 3 is fixed to the top surface of the cover 1. For example, the non-magnetic metal plate 3 may be fixed to the top surface of the cover 1 by double-sided tape, adhesive, or riveting. In the example shown in the figure, the non-magnetic metal plate 3 is a copper plate and is fixed to the top surface of the cover 1 by an adhesive. In addition, the non-magnetic metal plate 3 may also be formed of copper or aluminum.

[0030] The coil 4 is an example of a fixed side magnetic field generating component, and is configured to generate a magnetic field when fixed to the frame HS. In addition, the coil 4 is a component constituting the drive mechanism DM. In this embodiment, the coil 4 is a winding coil formed by winding a conductive wire whose surface is covered with an insulating material, and is fixed to the insulating substrate BM by an adhesive. In addition, for the sake of clarity, Figure 1 and Figure 2 The detailed winding state of the conductive wire is omitted in the illustration. The same is true for other drawings showing the coil 4.

[0031] Specifically, if Figure 1As shown in the figure below, the coil 4 is configured so that one end (first end 4A) is connected to the first conductor pad PD1 formed on the upper surface of the insulating substrate BM, and the other end (second end 4B) is connected to the second conductor pad PD2 formed on the upper surface of the insulating substrate BM.

[0032] The control unit CTR is configured to be able to control the action of the movable side member MB. In the present embodiment, the control unit CTR is a device including an electronic circuit and a non-volatile storage device, etc., and is configured to be able to control the direction and magnitude of the current flowing through the coil 4. The control unit CTR can be configured to control the direction and magnitude of the current flowing through the coil 4 according to a control instruction from an external device such as a computer, or can be configured to control the direction and magnitude of the current flowing through the coil 4 without receiving a control instruction from an external device. For example, the control unit CTR can also be a microcomputer having a CPU. In addition, in the present embodiment, the control unit CTR is arranged outside the frame HS, but can also be arranged inside the frame HS.

[0033] The movable-side member MB is configured to vibrate the frame HS. In the present embodiment, the movable-side member MB is configured to vibrate the frame HS by reciprocating in a state in which the movable-side member MB is mounted in the frame HS via the elastic support member 7 .

[0034] Specifically, the movable side member MB is configured to include a movable side magnetic field generating member 5 and a movable side magnetic member 6, and is elastically supported by an elastic supporting member 7. More specifically, the movable side member MB is configured to have a predetermined natural vibration frequency and to be able to vibrate along a vibration axis VA (refer to Figure 1 (see the figure below) reciprocates (vibrates) relative to the frame HS.

[0035] The movable side magnetic field generating member 5 is configured to generate a magnetic field in a state where it can reciprocate (vibrate) relative to the frame HS. In addition, the movable side magnetic field generating member 5 is a member constituting the driving mechanism DM. Figure 2 As shown, the movable side magnetic field generating member 5 includes a left side magnet 5L and a right side magnet 5R which are magnetized to two poles in the Z-axis direction. Figure 2 In the figure, for the sake of clarity, a cross pattern is indicated on the S-pole portion of the movable magnetic field generating member 5, and a dot pattern is indicated on the N-pole portion of the movable magnetic field generating member 5. The same is true in other figures showing the polarity of the movable magnetic field generating member 5.

[0036] The movable side magnetic component 6 is a component used for installing the movable side magnetic field generating component 5 relative to the elastic supporting component 7. In the illustrated example, the movable side magnetic component 6 is joined to the elastic supporting component 7 by welding. In addition, the movable side magnetic component 6 is configured to be able to control the path of the magnetic field lines of the magnetic field generated by the movable side magnetic field generating component 5. In addition, the movable side magnetic component 6 is a component constituting the driving mechanism DM. In the present embodiment, the movable side magnetic component 6 includes a central portion 6C on which the movable side magnetic field generating component 5 is installed, a rear side portion 6B arranged on the rear side of the central portion 6C, a front side portion 6F arranged on the front side of the central portion 6C, a left side portion 6L arranged on the left side of the central portion 6C, and a right side portion 6R arranged on the right side of the central portion 6C. Figure 1 and Figure 2 In the example shown, the movable-side magnetic field generating member 5 is attracted to the top surface CP of the movable-side magnetic member 6. Alternatively, the movable-side magnetic field generating member 5 and the movable-side magnetic member 6 may be fixed to each other by an adhesive.

[0037] The driving mechanism DM is an example of a vibration force generator, and is configured to vibrate the movable side member MB along the vibration axis VA. In the present embodiment, the driving mechanism DM is an electromagnetic driving mechanism, and is composed of a base plate 2 (fixed side magnetic member), a coil 4 (fixed side magnetic field generating member), a movable side magnetic field generating member 5, and a movable side magnetic member 6. Specifically, the driving mechanism DM is configured to vibrate the movable side member MB (movable side magnetic field generating member 5) elastically supported by the elastic supporting member 7 along the vibration axis VA using a Lorentz force corresponding to the direction and magnitude of the current supplied to the coil 4 under the control of the control unit CTR.

[0038] The elastic support member 7 is configured to be arranged between the fixed side member FB (frame HS) and the movable side member MB and can elastically support the movable side member MB. In the present embodiment, the elastic support member 7 is a leaf spring formed of a metal plate, and includes: a left elastic support member 7L, which is mounted on the inner side surface (surface on the Y2 side) of the left side plate portion 1A2 of the frame HS; a right elastic support member 7R, which is mounted on the inner side surface (surface on the Y1 side) of the right side plate portion 1A4 of the frame HS; and a central portion 7C, which is arranged between the left elastic support member 7L and the right elastic support member 7R. In the example shown in the figure, the central portion 7C functions as a connecting plate portion connecting the left elastic support member 7L and the right elastic support member 7R. In addition, the central portion 7C may also be omitted. In this case, the left elastic support member 7L and the right elastic support member 7R are respectively independent components, which are respectively fixed to the movable side member MB.

[0039] The elastic support member 7 may include a reinforcing plate portion for suppressing deformation of the center portion 7C. Specifically, the reinforcing plate portion includes at least one of a front extension portion extending downward from the front edge of the center portion 7C and a rear extension portion extending downward from the rear edge of the center portion 7C.

[0040] Here, refer to Figure 3 , Figure 4 and Figure 5 , the details of the elastic supporting component 7 will be described. Figure 3 These are six-sided views of the elastic supporting member 7. Figure 4 as well as Figure 5 2 is a diagram showing an elastic support member 7 that supports the movable side member MB (the movable side magnetic field generating member 5 and the movable side magnetic member 6) so as to be reciprocatingly movable. Specifically, Figure 4 is a three-dimensional view of the movable side magnetic field generating member 5, the movable side magnetic member 6 and the elastic supporting member 7, Figure 5 The upper figure is a front view of the movable side magnetic field generating component 5, the movable side magnetic component 6 and the elastic supporting component 7, Figure 5 The lower figure is a bottom view of the movable side magnetic field generating component 5, the movable side magnetic component 6 and the elastic supporting component 7.

[0041] The center portion 7C is configured to be fixed to the upper surface of the movable-side magnetic member 6. In the present embodiment, the lower surface of the center portion 7C is fixed to the upper surface of the movable-side magnetic member 6 by welding.

[0042] The left elastic support member 7L is a member that elastically supports the movable side member MB, and includes a left upright portion 7L1, a first left deformable portion 7L2, a left folded portion 7L3, a second left deformable portion 7L4, and a left fixed portion 7L5. The left upright portion 7L1 is a portion that connects the left end LE (see Figure 3The left side upright portion 7L1 is a portion connected to the first left side deformable portion 7L2 in a top view. In the present embodiment, the left side upright portion 7L1 is formed by bending the left end portion LE of the central portion 7C extending in the X-axis direction as a fold. The left side upright portion 7L1 includes a portion formed in a straight line when viewed from the front. In the present embodiment, the left side upright portion 7L1 is configured to extend downward (in the Z2 direction) perpendicularly relative to the central portion 7C. The first left side deformable portion 7L2 is a portion formed in a straight line when viewed from a top view. In the present embodiment, the first left side deformable portion 7L2 is configured to extend forward (in the X1 direction) from the left side upright portion 7L1. The left side folded portion 7L3 is configured to extend from the front end of the first left side deformable portion 7L2 to the left (in the Y1 direction) and bend convexly to the front side. In the present embodiment, the left side folded portion 7L3 is configured to have a U-shape in a top view so that the stress acting on the left side folded portion 7L3 is dispersed over a wide range. The second left side deformation portion 7L4 is a straight portion extending backward (in the X2 direction) from the left end of the left side folded portion 7L3. The left side fixed portion 7L5 is a portion fixed to the frame HS. In the present embodiment, the left side fixed portion 7L5 extends backward (in the Z1 direction) from the rear end portion of the second left side deformation portion 7L4 in parallel with the left side plate portion 1A2 of the cover 1, and is fixed to the left side plate portion 1A2 by welding. However, the left side fixed portion 7L5 may also be fixed to other portions of the frame HS such as the front side plate portion 1A1, the rear side plate portion 1A3, the top plate portion 1B or the bottom plate 2 by welding or the like. In addition, the first left side deformation portion 7L2, the left side folded portion 7L3 and the second left side deformation portion 7L4 are also referred to as the portion that is deformed according to the reciprocating motion of the movable side member MB, namely, the left side deformation portion 7LT (refer to Figure 3 ).

[0043] The right elastic support member 7R is a member that elastically supports the movable side member MB, and includes a right upright portion 7R1, a first right deformable portion 7R2, a right folded portion 7R3, a second right deformable portion 7R4, and a right fixed portion 7R5. The right upright portion 7R1 is a portion that connects the right end portion RE of the central portion 7C (see Figure 3The portion connected to the first right side deformation portion 7R2 in a top view (in a top view). In the present embodiment, the right side upright portion 7R1 is formed by bending the right end portion RE of the central portion 7C extending in the X-axis direction as a fold. The right side upright portion 7R1 includes a portion formed in a straight line when viewed from the front. In the present embodiment, the right side upright portion 7R1 is configured to extend downward (in the Z2 direction) perpendicularly relative to the central portion 7C. The first right side deformation portion 7R2 is a portion formed in a straight line when viewed from a top view. In the present embodiment, the first right side deformation portion 7R2 is configured to extend backward (in the X2 direction) from the right side upright portion 7R1. The right side folding portion 7R3 is configured to extend from the rear end of the first right side deformation portion 7R2 to the right (in the Y2 direction) and bend convexly to the rear side. In the present embodiment, the right side folding portion 7R3 is configured to have a U-shape when viewed from a top view so that the stress acting on the right side folding portion 7R3 is dispersed over a wide range. The second right side deformation portion 7R4 is a portion formed as a straight line extending forward (X1 direction) from the right end of the right side folded portion 7R3. The right side fixed portion 7R5 is a portion fixed to the frame HS. In the present embodiment, the right side fixed portion 7R5 extends forward (X1 direction) from the front end portion of the second right side deformation portion 7R4 in parallel with the right side plate portion 1A4 of the cover 1, and is fixed to the right side plate portion 1A4 by welding. However, the right side fixed portion 7R5 may also be fixed to other portions of the frame HS such as the front side plate portion 1A1, the rear side plate portion 1A3, the top plate portion 1B or the bottom plate 2 by welding or the like. In addition, the first right side deformation portion 7R2, the right side folded portion 7R3 and the second right side deformation portion 7R4 are also referred to as the portion that is deformed according to the reciprocating motion of the movable side member MB, namely, the right side deformation portion 7RT (refer to Figure 3 ).

[0044] The left side portion 6L of the movable side magnetic component 6 is configured to restrict the movable side magnetic field generating component 5 (left side magnet 5L) adsorbed by the movable side magnetic component 6 fixed to the central portion 7C from moving to the left relative to the movable side magnetic component 6. In addition, the right side portion 6R of the movable side magnetic component 6 is configured to restrict the movable side magnetic field generating component 5 (right side magnet 5R) adsorbed by the movable side magnetic component 6 fixed to the central portion 7C from moving to the right relative to the movable side magnetic component 6. In addition, the rear side portion 6B of the movable side magnetic component 6 is configured to restrict the movable side magnetic field generating component 5 adsorbed by the movable side magnetic component 6 fixed to the central portion 7C from moving backward relative to the movable side magnetic component 6. In addition, the front side portion 6F of the movable side magnetic component 6 is configured to restrict the movable side magnetic field generating component 5 adsorbed by the movable side magnetic component 6 fixed to the central portion 7C from moving forward relative to the movable side magnetic component 6.

[0045] Specifically, the rear side portion 6B includes a central rear side portion 6BC, a left rear side portion 6BL, and a right rear side portion 6BR, and the front side portion 6F includes a central front side portion 6FC, a left front side portion 6FL, and a right front side portion 6FR. Moreover, the left rear side portion 6BL and the left front side portion 6FL are configured to function as a left stopper that limits the movement of the movable side member MB to the left (Y1 direction), and the right rear side portion 6BR and the right front side portion 6FR are configured to function as a right stopper that limits the movement of the movable side member MB to the right (Y2 direction). Specifically, the left rear side portion 6BL and the left front side portion 6FL are configured so that if the movable side member MB moves a predetermined distance to the left, they come into contact with the inner side surface of the left side plate portion 1A2 of the cylindrical portion 1A, thereby suppressing further movement of the movable side member MB to the left. The right rear side portion 6BR and the right front side portion 6FR are configured so that when the movable side member MB moves rightward by a predetermined distance, they come into contact with the inner surface of the right side plate portion 1A4 of the tubular portion 1A, thereby preventing the movable side member MB from further moving rightward.

[0046] Next, refer to Figure 6 , Figure 7 as well as Figure 8 , the reciprocating motion of the movable side member MB based on the driving mechanism DM is described. Figure 6 Detailed diagram of the vibration generating device 101. Specifically, Figure 6 The above figure is a top view of the vibration generating device 101. Figure 6 The following figure is viewed from the X1 side and includes Figure 6 A longitudinal sectional view of the vibration generating device 101 in a virtual plane parallel to the YZ plane of the single-point dashed line L1 in the above figure. Specifically, Figure 6 The figure below shows the state of the vibration generating device 101 in the initial state. The initial state of the vibration generating device 101 refers to the state of the vibration generating device 101 when no current is supplied to the coil 4.

[0047] Figure 7 4 is a top view of the coil 4, the movable side member MB (the movable side magnetic field generating member 5 and the movable side magnetic member 6) and the elastic supporting member 7. Specifically, Figure 7 The figure above shows the state when the movable side part MB moves to the left (Y1 direction). Figure 7 The central figure shows the state when the movable side member MB is in the neutral position (not moved). Figure 7 The figure below shows the state when the movable side part MB moves to the right (Y2 direction). Figure 7 In FIG. 1 , for the sake of explanation, a portion of each of the coil 4 and the elastic supporting member 7 which is actually hidden by the movable-side member MB and cannot be seen is indicated by a hidden line (dashed line).

[0048] Figure 8 4 is a front view of the coil 4, the movable side member MB (the movable side magnetic field generating member 5 and the movable side magnetic member 6), and the elastic supporting member 7. Specifically, Figure 8 The figure above shows the state when the movable side part MB moves to the left (Y1 direction). Figure 8 The central figure shows the state when the movable side member MB is in the neutral position (not moved). Figure 8 The figure below shows the state when the movable side part MB moves to the right (Y2 direction).

[0049] For example, Figure 6 As shown in the figure below, the lower half of the left magnet 5L constituting the movable side magnetic field generating member 5 is magnetized to the N pole, and the upper half is magnetized to the S pole. In addition, the lower half of the right magnet 5R constituting the movable side magnetic field generating member 5 is magnetized to the S pole, and the upper half is magnetized to the N pole.

[0050] Furthermore, when the current flows from the first end 4A to the second end 4B of the coil 4, the current Figure 7 As shown by the arrow AR1 in the upper figure, the current flows counterclockwise when viewed from above. In this case, in the initial state, the left wiring harness portion 4L, which is opposed to the left magnet 5L in the coil 4 in the up-down direction and extends linearly in the front-to-back direction, flows from the rear side (X2 side) to the front side (X1 side) when viewed from above, so a force that acts as a reaction force of the Lorentz force and attempts to move the left magnet 5L to the left (Y1 direction) acts on the left magnet 5L. In addition, in the initial state, the right wiring harness portion 4R, which is opposed to the right magnet 5R in the coil 4 in the up-down direction and extends linearly in the front-to-back direction, flows from the front side (X1 side) to the rear side (X2 side) when viewed from above, so a force that acts as a reaction force of the Lorentz force and attempts to move the right magnet 5R to the left (Y1 direction) acts.

[0051] As a result, the movable side member MB is Figure 6 As shown by the hollow arrow AR3 in the figure below, a force is applied to the left (Y1 direction). Figure 7 The above picture and Figure 8 When the movable side part MB moves to the left by a predetermined distance, the left front side part 6FL and the left rear side part 6BL of the movable side magnetic part 6 contact the inner side surface of the left side plate part 1A2 of the cylindrical part 1A, thereby limiting the further movement of the movable side part MB to the left. Figure 7 and Figure 8In the figure, for the sake of explanation, the position of the left side plate portion 1A2 of the cylindrical portion 1A is indicated by a single dotted line. In addition, the control unit CTR is typically configured to vibrate the movable side member MB in such a manner that the left front side portion 6FL and the left rear side portion 6BL of the movable side magnetic member 6 do not contact the inner side surface of the left side plate portion 1A2 of the cylindrical portion 1A.

[0052] In this case, if Figure 7 As shown in the figure above, the left elastic support member 7L is such that the distance DL1 between the left end portion LE of the central portion 7C and the left fixing portion 7L5 in the left-right direction (Y-axis direction) is greater than the distance DL0 in the initial state (refer to Figure 7 In addition, the right elastic support member 7R is stretched so that the distance DR1 in the left-right direction (Y-axis direction) between the right end RE of the central portion 7C and the right fixing portion 7R5 is larger than the distance DR0 in the initial state.

[0053] On the contrary, when the current flows from the second end 4B to the first end 4A of the coil 4, the current Figure 7 As shown by the arrow AR2 in the figure below, the current flows clockwise when viewed from above. In this case, in the left wiring harness portion 4L that is opposed to the left magnet 5L in the coil 4 in the vertical direction in the initial state, the current flows from the front side (X1 side) to the rear side (X2 side) when viewed from above, so a force that acts as a reaction force of the Lorentz force to move the left magnet 5L to the right (Y2 direction) acts on the left magnet 5L. In addition, in the right wiring harness portion 4R that is opposed to the right magnet 5R in the coil 4 in the vertical direction in the initial state, the current flows from the rear side (X2 side) to the front side (X1 side) when viewed from above, so a force that acts as a reaction force of the Lorentz force to move the right magnet 5R to the right (Y2 direction) acts.

[0054] As a result, the movable side member MB is forced to the right (Y2 direction), as shown in FIG. Figure 7 The following figure and Figure 8 As shown in the figure below, the movable side part MB moves to the right by a predetermined distance, and the right front side part 6FR and the right rear side part 6BR of the movable side magnetic part 6 contact the inner side surface of the right side plate part 1A4 of the cylindrical part 1A, thereby limiting the further movement of the movable side part MB to the right. Figure 7 and Figure 8 In the figure, for the sake of explanation, the position of the right side plate portion 1A4 of the cylindrical portion 1A is indicated by a single dotted line. In addition, the control unit CTR is typically configured to vibrate the movable side member MB in such a manner that the right front side portion 6FR and the right rear side portion 6BR of the movable side magnetic member 6 do not contact the inner side surface of the right side plate portion 1A4 of the cylindrical portion 1A.

[0055] In this case, if Figure 7 As shown in the figure below, the left elastic support member 7L is such that the distance DL2 between the left end portion LE of the central portion 7C and the left fixing portion 715 in the left-right direction (Y-axis direction) is greater than the distance DL0 in the initial state (refer to Figure 7 In addition, the right elastic support member 7R is compressed so that the distance DR2 in the left-right direction (Y-axis direction) between the right end RE of the central portion 7C and the right fixing portion 7R5 is smaller than the distance DR0 in the initial state.

[0056] The control unit CTR can, for example, repeatedly reverse the direction of the current flowing through the coil 4 at a cycle corresponding to the natural frequency of the elastic support member 7. Figure 7 The state shown in the central figure is alternately generated Figure 7 The state shown in the figure above and Figure 7 The status is shown in the figure below.

[0057] Specifically, the control unit CTR becomes Figure 7 When the state shown in the figure above is reached, the current supply to the coil 4 is stopped. When the current supply to the coil 4 is stopped, the Lorentz force and its reaction force disappear. At this time, the movable side part MB is pushed back to the right (Y2 direction) by the restoring force of the elastic support part 7. The vibration generating device 101 becomes Figure 7 The same is true for the state shown in the figure below.

[0058] Alternatively, the control unit CTR may reciprocate the movable member MB in the left-right direction by switching supply and stop of the current to the coil 4 without reversing the direction of the current flowing through the coil 4 .

[0059] Next, refer to Fig. 9 , another structural example of the elastic supporting member 7 that elastically supports the movable side member MB will be described. Fig. 9 2 is a perspective view of another structural example of the elastic support member 7 that elastically supports the movable side member MB. Specifically, Fig. 9 Three other structural examples of the elastic support member 7 for elastically supporting the movable side member MB are shown. Fig. 9 In the figure, for the purpose of explanation, hidden lines (dashed lines) are used to indicate the parts of the elastic support member 7 and the movable side member MB that are hidden by themselves or other members and cannot be seen. Fig. 9 In the figure, for illustration purposes, a cross pattern is marked at the welded portion.

[0060] Fig. 9 The elastic support member 7 shown in the above figure is different from the elastic support member 7 in that it does not include the central portion and the folded portion (the left folded portion and the right folded portion). Figure 3The elastic support member 7 shown is different, but in other respects is the same as Figure 3 The elastic supporting members 7 shown are identical.

[0061] Fig. 9 The elastic support member 7 shown in the central figure and Figure 3 The elastic support member 7 shown in the figure is different in that the elastic support member 7 does not include a central portion, and the left folded portion 7L3 is configured in a manner that protrudes toward the rear side in the same manner as the right folded portion 7R3, but is similar in other respects to the elastic support member 7. Figure 3 The elastic supporting members 7 shown are identical.

[0062] Fig. 9 The elastic support member 7 shown in the figure below and Figure 3 The elastic support member 7 shown in the figure is different in that the elastic support member 7 does not include a central portion, the left fixing portion 7L5 is arranged at a position closer to the inside (right side, Y2 side) than the left upright portion 7L1, and the right fixing portion 7R5 is arranged at a position closer to the inside (left side, Y1 side) than the right upright portion 7R1, but is similar to the elastic support member 7 in other respects. Figure 3 The same as the elastic support member 7 shown. Fig. 9 In the example shown in the following figure, the bottom plate 2 may also be configured such that the portions (not shown) welded to the left fixing portion 7L5 and the right fixing portion 7R5 protrude upward from the upper surface of the bottom plate 2. Alternatively, the left fixing portion 7L5 and the right fixing portion 7R5 may each include a portion (not shown) extending parallel to the upper surface of the bottom plate 2 so as to be welded to the upper surface of the bottom plate 2.

[0063] As mentioned above, Figure 2 As shown, the vibration generating device 101 involved in the embodiment of the present disclosure comprises: a fixed side part FB and a movable side part MB; an elastic supporting part 7, which supports the movable side part MB so as to be able to vibrate in the left-right direction (Y-axis direction) relative to the fixed side part FB; and a driving unit DM, including: a fixed side magnetic field generating part (coil 4), which is included in the fixed side part FB, and a movable side magnetic field generating part 5, which is included in the movable side part MB, and applies a vibration force in the left-right direction (Y-axis direction) to the movable side part MB. The elastic supporting part 7 includes a left elastic supporting part 7L and a right elastic supporting part 7R. As shown Figure 3 As shown in the top view of , the right elastic support member 7R may also include: a right fixing portion 7R5 fixed to the fixed side member FB (cover 1); a right deformable portion 7RT connected to the right fixing portion 7R5 at one end and extending in the front-to-back direction (X-axis direction); and a right erected portion 7R1 extending from the other end of the right deformable portion 7RT in the up-down direction (Z-axis direction). Figure 5As shown in the above figure, the movable side component MB (movable side magnetic field generating component 5 and movable side magnetic component 6) is installed on the right elastic supporting component 7R in a manner that it is arranged on the left side (Y1 side) of the right upright portion 7Rl and at a position higher than the height H1 of the upper end of the right deformation portion 7RT. The height H1 is the distance from the lower end of the right deformation portion 7RT to the upper end of the right deformation portion 7RT in the Z-axis direction. In addition, the distance from the lower end of the right deformation portion 7RT to the movable side magnetic field generating component 5 (right magnet 5R) in the Z-axis direction is the height H2 (>height H1), and the distance from the lower end of the right deformation portion 7RT to the movable side magnetic component 6 in the Z-axis direction is the height H3 (>height H2). Moreover, when the movable side component MB vibrates and displaces to the right, as shown in FIG. Figure 8 As shown in the figure below, the lower part of the movable side member MB (the lower part EPR of the S pole part of the right magnet 5R) is located above the right deformable part 7RT. Therefore, the movable side member MB and the right deformable part 7RT do not interfere with each other.

[0064] With this structure, the vibration generating device 101 can achieve miniaturization in the left-right direction (Y-axis direction) while ensuring vibration power. This is because there is no need to provide a space for accommodating the right side deformation part 7RT on the right side (Y2 side) of the movable side part MB. In addition, this is because the vibration generating device 101 can move (vibrate) the movable side part MB to the right to a position where the right end of the movable side part MB overlaps with the right side deformation part 7RT when viewed from above.

[0065] In addition, as long as other conditions such as the length dimension in the left-right direction (Y-axis direction) are the same, this structure can increase the maximum amplitude compared with the spring disclosed in Patent Document 1. Alternatively, as long as other conditions such as the length dimension in the left-right direction (Y-axis direction) are the same, this structure can increase the volume of the movable side member MB compared with the spring disclosed in Patent Document 1.

[0066] In addition, if Figure 3 As shown in the top view, the right side deformation portion 7RT may also have: a first right side deformation portion 7R2, one end of which is connected to the right side upright portion 7R1, and extends along one side (rear, X2 direction) of the front-to-back direction (X-axis direction); a right side folded portion 7R3, connected to the other end of the first right side deformation portion 7R2; and a second right side deformation portion 7R4, one end of which is connected to the right side folded portion 7R3, extends along the other side (front, X1 direction) of the front-to-back direction (X-axis direction), and the other end is connected to the right side fixed portion 7R5.

[0067] With this structure, the vibration generating device 101 can be miniaturized in the front-to-back direction (X-axis direction) because the length dimension of the right deformable portion 7RT in the front-to-back direction (X-axis direction) for achieving the desired spring constant of the right elastic support member 7R can be shortened compared to a case where there is no right folded portion 7R3.

[0068] In addition, if Figure 3 As shown in the top view of , the left elastic support member 7L may also include: a left fixed portion 7L5 fixed to the fixed side member FB (cover 1); a left deformable portion 7LT connected to the left fixed portion 7L5 at one end and extending in the front-to-back direction (X-axis direction); and a left upright portion 7L1 extending from the other end of the left deformable portion 7LT in the up-down direction (Z-axis direction). Figure 5 As shown in the above figure, the movable side component MB (movable side magnetic field generating component 5 and movable side magnetic component 6) is installed on the left elastic support component 7L in a manner that it is arranged on the right side (Y2 side) of the left upright portion 7L1 and at a position higher than the height H1 of the upper end of the left deformation portion 7LT. The height H1 is the distance from the lower end of the left deformation portion 7LT to the upper end of the left deformation portion 7LT in the Z-axis direction. In addition, the distance from the lower end of the left deformation portion 7LT to the movable side magnetic field generating component 5 (left magnet 5L) in the Z-axis direction is the height H2 (>height H1), and the distance from the lower end of the left deformation portion 7LT to the movable side magnetic component 6 in the Z-axis direction is the height H3 (>height H2). Moreover, when the movable side component MB vibrates and displaces to the left, as shown in FIG. Figure 8 As shown in the above figure, the lower part of the movable side member MB (the lower part EPL of the N-pole portion of the left magnet 5L) is located above the left deformable portion 7LT. Therefore, the movable side member MB and the left deformable portion 7LT do not interfere with each other.

[0069] Through this structure, the vibration generating device 101 can ensure vibration power and achieve further miniaturization in the left-right direction (Y-axis direction). This is because there is no need to provide a space for accommodating the right-side deformation portion 7RT on the right side (Y2 side) of the movable side part MB, and there is no need to provide a space for accommodating the left-side deformation portion 7LT on the left side (Y1 side) of the movable side part MB. In addition, this is because the vibration generating device 101 can move (vibrate) the movable side part MB to the right to a position where the right end of the movable side part MB overlaps with the right-side deformation portion 7RT when viewed from above, and can move (vibrate) the movable side part MB to the left to a position where the left end of the movable side part MB overlaps with the left-side deformation portion 7LT when viewed from above.

[0070] In addition, if Figure 3As shown in the top view, the left side deformation portion 7LT may also have: a first left side deformation portion 7L2 connected to the left side upright portion 7L1 at one end and extending along one side (front, X1 direction) of the front-to-back direction (X-axis direction); a left side folded portion 7L3 connected to the other end of the first left side deformation portion 7L2; and a second left side deformation portion 7L4 connected to the left side folded portion 7L3 at one end, extending along the other side (rear, X2 direction) of the front-to-back direction (X-axis direction) and connected to the left side fixed portion 7L5 at the other end.

[0071] With this structure, the vibration generating device 101 can be further miniaturized in the front-to-back direction (X-axis direction) because the length dimension of the left deformable portion 7LT in the front-to-back direction (X-axis direction) for achieving the desired spring constant of the left elastic support member 7L can be shortened compared to the case where there is no left folded portion 7L3.

[0072] In addition, if Figure 6 As shown in the figure below, the fixed-side magnetic field generating member (coil 4) may be arranged on the lower side of the movable-side member MB between the right elastic supporting member 7R and the left elastic supporting member 7L.

[0073] With this structure, the vibration generating device 101 can ensure vibration power and achieve further miniaturization in the left-right direction (Y-axis direction). This is because there is no need to provide a space for accommodating the fixed-side magnetic field generating component (coil 4) on either the left side (Y1 side) or the right side (Y2 side) of the movable-side component MB.

[0074] The elastic support member 7 may include a connecting plate portion (central portion 7C) connecting the upper end of the right upright portion 7R1 and the upper end of the left upright portion 7L1. In this case, the movable magnetic member 6 may be mounted on the lower side of the connecting plate portion (central portion 7C).

[0075] With this structure, the vibration generating device 101 can improve the joint strength between the elastic support member 7 and the movable side member MB by welding or the like. This is because the elastic support member 7 and the movable side member MB are joined via the connecting plate portion (central portion 7C) which is relatively difficult to deform. In addition, this structure brings about the following effects: the number of parts can be reduced, and thus the number of welding locations can be reduced.

[0076] In addition, if Figure 1 As shown in the figure below, the fixed side part FB may also include a box-shaped shell (frame HS), which has: a cylindrical portion 1A, having a front plate portion 1A1, a left plate portion 1A2, a rear plate portion 1A3 and a right plate portion 1A4; a bottom plate portion (bottom plate 2) connected to the lower end of the cylindrical portion 1A; and a top plate portion 1B connected to the upper end of the cylindrical portion 1A.

[0077] This structure has the effect of preventing the magnetic fields generated by the fixed-side magnetic field generating member (coil 4 ) and the movable-side magnetic field generating member 5 from magnetically influencing other devices located outside the vibration generating device 101 .

[0078] The preferred embodiments of the present disclosure are described in detail above. However, the present invention is not limited to the above embodiments. Various modifications or substitutions can be applied to the above embodiments without departing from the scope of the present invention. In addition, the various features described with reference to the above embodiments can also be appropriately combined as long as they are not technically contradictory.

[0079] For example, in the above-mentioned embodiment, the vibration generating device 101 is configured to include the left magnet 5L and the right magnet 5R as the movable side magnetic field generating member and the coil 4 as the fixed side magnetic field generating member. However, the vibration generating device 101 may also be configured to include the coil as the movable side magnetic field generating member and the permanent magnet as the fixed side magnetic field generating member. In addition, the vibration generating device 101 may also be configured to include the coil as the movable side magnetic field generating member and the coil 4 as the fixed side magnetic field generating member.

[0080] This application claims priority based on Japanese Patent Application No. 2022-175543 filed on November 1, 2022, the entire contents of which are incorporated herein by reference.

[0081] Marking Description

[0082] 1: cover; 1A: cylindrical portion; 1A1: front side plate portion; 1A2: left side plate portion; 1A3: rear side plate portion; 1A4: right side plate portion; 1B: top plate portion; 2: bottom plate; 3: non-magnetic metal plate; 4: coil; 4A: first end portion; 4B: second end portion; 4L: left side harness portion; 4R: right side harness portion; 5: movable side magnetic field generating component; 5L: left side magnet; 5R: right side magnet; 6: movable side magnetic component; 6B: rear side portion; 6BC: central rear side portion; 6BL: left rear side portion; 6BR: right rear side portion; 6C: central portion; 6F: front side portion; 6FC: central front side portion; 6FL: left front side portion; 6FR: right front side portion; 6L: left side portion; 6R: right side portion; 7: elastic support component; 7C: central portion; 7L: left elastic support component; 7L1: left side upright part; 7L2: first left side deformation part; 7L3: left side folding part; 7L4: second left side deformation part; 7L5: left side fixing part; 7LT: left side deformation part; 7R: right side elastic supporting part; 7R1: right side upright part; 7R2: first right side deformation part; 7R3: right side folding part; 7R4: second right side deformation part; 7R5: right side fixing part; 7RT: right side deformation part; 101: vibration generating device; BM: insulating substrate; CP: top surface; CTR: control part; DM: drive unit; FB: fixed side part; HS: frame; IT: input terminal; LE: left end part; MB: movable side part; PD1: first conductor pad; PD2: second conductor pad; RE: right end part; VA: vibration axis; VE: vibration device.

Claims

1. A vibration generating device, characterized in that: have: a fixed side member and a movable side member; an elastic supporting member that supports the movable side member so as to be able to vibrate in a left-right direction relative to the fixed side member; as well as The driving unit includes: a fixed-side magnetic field generating component included in the fixed-side component, and a movable-side magnetic field generating component included in the movable-side component, wherein the driving unit applies a vibration force in a left-right direction to the movable-side component. The elastic supporting member includes a left elastic supporting member and a right elastic supporting member, The right elastic support member includes: a right fixing portion fixed to the fixed side member; a right deforming portion, one end of which is connected to the right fixing portion and extends in the front-to-back direction; and a right erecting portion extending from the other end of the right deforming portion in the up-down direction. The movable side member is mounted on the right elastic support member so as to be arranged on the left side of the right upright portion and at a position higher than the upper end of the right deformation portion. When the movable side member vibrates and displaces to the right, the lower portion of the movable side member is located above the right deformation portion and does not interfere with the right deformation portion.

2. The vibration generating device according to claim 1, characterized in that: The right side deformation portion comprises: a first right side deformation portion, one end of which is connected to the right side upright portion and extends to one side in the front-rear direction; a right side folding portion, which is connected to the other end of the first right side deformation portion; and a second right side deformation portion, one end of which is connected to the right side folding portion and extends to the other side in the front-rear direction, and the other end of which is connected to the right side fixing portion.

3. The vibration generating device according to claim 1, characterized in that: The left elastic support member includes: a left fixed portion fixed to the fixed side member; a left deformable portion, one end of which is connected to the left fixed portion and extends in the front-to-back direction; and a left upright portion extending from the other end of the left deformable portion in the up-down direction. The movable side member is mounted on the left elastic support member so as to be arranged on the right side of the left upright portion and at a position higher than the upper end of the left deformable portion. When the movable side member vibrates and displaces to the left, the lower portion of the movable side member is located above the left deformation portion and does not interfere with the left deformation portion.

4. The vibration generating device according to claim 3, characterized in that: The left side deformation portion comprises: a first left side deformation portion, one end of which is connected to the left side upright portion and extends to one side in the front-rear direction; a left side folding portion, which is connected to the other end of the first left side deformation portion; and a second left side deformation portion, one end of which is connected to the left side folding portion and extends to the other side in the front-rear direction, and the other end is connected to the left side fixing portion.

5. The vibration generating device according to claim 3 or 4, characterized in that: The fixed-side magnetic field generating member is disposed between the right elastic supporting member and the left elastic supporting member on the lower side of the movable-side member.

6. The vibration generating device according to claim 3 or 4, characterized in that: The elastic support member includes a connecting plate portion connecting the upper end of the right upright portion and the upper end of the left upright portion. The movable-side magnetic field generating member is mounted on the lower side of the connecting plate portion.

7. The vibration generating device according to claim 3 or 4, characterized in that: The fixed side component includes a box-shaped shell, which has: a cylindrical portion having a front plate portion, a left plate portion, a rear plate portion and a right plate portion; a bottom plate portion connected to the lower end of the cylindrical portion; and a top plate portion connected to the upper end of the cylindrical portion.

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