Vibration generating device and method for manufacturing vibration generating device

Abstract

Provided is a vibration generating device in which a coil holder can be stably fixed to a housing without using welding. A vibration generating device (101) is provided with a bracket (11) that functions as a coil bracket, the bracket (11) having a mounting plate section (11A) and a main body plate section (11B), and being mounted to a housing (HS) via the mounting plate section (11A). The housing (HS) has a bottom plate portion (2B), a third side plate portion (1A3) perpendicular to the bottom plate portion (2B), and a support portion (2P) supporting the mounting plate portion (11A). The third side plate section (1A3) includes a beam plate section (1C) provided so as to face the support section (2P) in the Z-axis direction. The mounting plate section (11A) is disposed so that the plate thickness direction (direction parallel to the XY plane) of the beam plate section (1C), which is a part of the third side plate section (1A3), and the plate thickness direction (Z-axis direction) of the main body plate section (11B) of the bracket (11) are perpendicular to each other, and is sandwiched between the support section (2P) and the beam plate section (1C).

Description

Technical Field

[0001] The present disclosure relates to a vibration generating device and a method for manufacturing the vibration generating device. Background Art

[0002] Conventionally, a vibration motor (vibration generating device) that generates vibration is known (see Patent Document 1). The vibration motor is composed of a stator and a vibrator made of magnetic steel. The stator includes a coil, and the coil is supported by a coil holder fixed to a housing via an L-shaped support arm. The coil holder and the housing are fixed to each other by welding.

[0003] However, when the melting point of the material forming the coil holder is different from the melting point of the material forming the case, it is difficult to fix the coil holder and the case to each other by welding.

[0004] In contrast, there is known an actuator (vibration generating device) that does not use welding (see Patent Document 2). The actuator is composed of a support body including a coil and a movable body including a magnet, and the coil is supported by a plate fixed to the housing. In addition, the housing formed by the metal plate is composed of a first housing member and a second housing member, and a portion of the plate formed by the metal plate (protruding plate portion) is clamped by a first bent portion protruding upward provided on the first housing member and a second bent portion protruding downward provided on the second housing member. In addition, the force (clamping force) that brings the first bent portion and the second bent portion that clamp a portion of the plate closer to each other is achieved by a substantially L-shaped hook formed by a portion of the second housing member.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Publication No. 2017-028976

[0008] Patent Document 2: Japanese Patent Application Publication No. 2023-009796 Summary of the invention

[0009] Technical problem to be solved by the invention

[0010] However, the hook generates a clamping force by bringing a plate-like portion extending parallel to a portion of the plate (protruding plate portion) into contact with a plate-like portion extending perpendicularly to a portion of the plate (protruding plate portion) constituting the first housing member. Therefore, the hook is easily elastically deformed, and there is a risk that the housing (housing) and the plate (coil bracket) cannot be firmly fixed.

[0011] Therefore, it is desirable to provide a vibration generating device capable of firmly fixing a coil bracket to a housing without using welding.

[0012] Means for solving technical problems

[0013] A vibration generating device according to one embodiment of the present disclosure comprises: a shell; a movable body accommodated in the shell; a supporting member supporting the movable body so as to be able to vibrate; a bracket having a main plate portion and a mounting plate portion extending from the main plate portion and mounted on the shell via the mounting plate portion; a coil mounted on the main plate portion; and a permanent magnet mounted on the movable body to generate a magnetic flux toward the coil, the shell having a bottom plate portion, a side plate portion perpendicular to the bottom plate portion, and a supporting portion supporting the mounting plate portion of the bracket, the side plate portion including a beam plate portion disposed opposite to the supporting portion in a plate thickness direction of the main plate portion of the bracket, the mounting plate portion being configured in such a manner that the plate thickness direction of the beam plate portion as a part of the side plate portion intersects with the plate thickness direction of the main plate portion of the bracket, and being clamped by the supporting portion and the beam plate portion.

[0014] Effects of the Invention

[0015] In the above-described vibration generator, the coil holder can be firmly fixed to the housing without using welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of a vibration generating device.

[0017] Figure 2 It is an exploded perspective view of the vibration generating device.

[0018] Figure 3 It is an exploded perspective view of the vibrating part and the non-vibrating body.

[0019] Figure 4 It is a three-dimensional diagram of a non-vibrating body.

[0020] Figure 5 It is a diagram showing a configuration example of a base member and an elastic supporting member.

[0021] Figure 6 It is a perspective view of a vibrating part and a non-vibrating body.

[0022] Figure 7 This is a perspective view of the drive unit.

[0023] Figure 8 It is a three-dimensional diagram of a leaf spring.

[0024] Fig. 9 This is a three-dimensional view of the base member and the bracket.

[0025] Fig.10 These are top and cross-sectional views of the base member, bracket, coil, and vibrator.

[0026] Fig.11It is a three-dimensional diagram of the components that constitute the vibration generating device.

[0027] Fig.12 It is a three-dimensional diagram of the components that constitute the vibration generating device.

[0028] Fig.13 Three views of the bracket and a cross-sectional view are shown.

[0029] Fig.14 This is a cross-sectional view of the base member, bracket, coil, and vibrator.

[0030] Fig.15 This is a cross-sectional view of the base member, bracket, coil, and vibrator.

[0031] Fig.16 This is a perspective view of another configuration example of the bracket.

[0032] Fig.17 This is a perspective view of another configuration example of the bracket.

[0033] Fig.18 These are the front view, bottom view, and left view of the cover component.

[0034] Fig.19 This is an enlarged view of a beam plate portion which is a part of the cover member.

[0035] Fig. 20 It is a left side view of the vibration generating device.

[0036] Fig.21 It is a left side view of a part of a vibration generating device.

[0037] Fig. 22 It is a cross-sectional view of a part of a vibration generating device.

[0038] Fig.23 It is a three-dimensional diagram of a part of a vibration generating device. DETAILED DESCRIPTION

[0039] Hereinafter, a vibration device VE including the vibration generator 101 according to an embodiment of the present disclosure will be described with reference to the drawings. Figure 1 1 is a perspective view of a vibration device VE including a vibration generating device 101 and a control unit CTR. Specifically, Figure 1 The above figure is a three-dimensional diagram of the vibration generating device 101 connected to the control unit CTR. Figure 1 The lower figure is a three-dimensional view of the vibration generating device 101 in a state where the cover part 1 is removed. Figure 2 It is an exploded perspective view of the vibration generating device 101 .

[0040] Figure 1 as well as Figure 2X1 in each of them represents one direction of the X-axis constituting the three-dimensional orthogonal coordinate system, and X2 represents the other 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 the other direction of the Y-axis. Similarly, Z1 represents one direction of the Z-axis constituting the three-dimensional orthogonal coordinate system, and Z2 represents the other 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 is true in other figures.

[0041] The vibration device VE includes a control unit CTR and a vibration generator 101. The vibration generator 101 includes a housing HS and a vibration unit VP accommodated in the housing HS.

[0042] Shell HS Figure 1 As shown in FIG. 1 , the housing HS has a substantially rectangular parallelepiped shape. In the present embodiment, the housing HS is formed of a non-magnetic material such as austenitic stainless steel. The housing HS is composed of a cover member 1 and a base member 2 .

[0043] like Figure 2 As shown, the cover member 1 is configured to form the side surface and the upper surface of the housing HS, and the base member 2 is configured to form the bottom surface of the housing HS. In the example shown in the figure, the base member 2 is configured to function as a base for supporting the vibration part VP.

[0044] In the example shown in the figure, the cover member 1 has a substantially rectangular cylindrical outer wall portion 1A and a flat plate-shaped top plate portion 1T provided continuously to the upper end (end on the Z1 side) of the outer wall portion 1A.

[0045] The outer wall portion 1A includes four side plate portions formed in a flat plate shape. Figure 2 As shown, it has a first side plate portion 1A1 and a third side plate portion 1A3 facing each other, and a second side plate portion 1A2 and a fourth side plate portion 1A4 which are perpendicular to the first side plate portion 1A1 and the third side plate portion 1A3 and facing each other.

[0046] The control unit CTR is configured to be able to realize the action of the vibration unit VP. In the example shown in the figure, the control unit CTR is configured to include an electronic circuit, which can supply an alternating current to the vibration unit VP for vibrating the vibration unit VP. In addition, in the example shown in the figure, the control unit CTR is arranged outside the housing HS, but it can also be arranged inside the housing HS. In this case, the control unit CTR can also be one of the components of the vibration generating device 101.

[0047] The vibration part VP is configured to be able to vibrate the housing HS by its own vibration. In the example shown in the figure, the vibration part VP is configured to be installed in the housing HS and to be able to vibrate the housing HS.

[0048] Next, refer to Figure 3 , explaining the details of the vibration part VP. Figure 3 2 is an exploded perspective view of the vibration part VP. The vibration part VP includes a vibration body VB, a driving unit DM, and an elastic supporting member ES.

[0049] The vibrating body VB as a movable body has a predetermined natural frequency and is configured to be able to move along a vibration axis VA extending in a predetermined direction (see Figure 2 ) vibrates relative to the housing HS. In the example shown in the figure, the vibrating body VB has a predetermined natural frequency and is configured to be able to vibrate along a vibration axis VA (see Figure 2 ) vibrates relative to the base member 2.

[0050] The driving unit DM is an example of a vibration force generating unit and is configured to vibrate the vibrating body VB along the vibration axis VA. In the example shown in the figure, the driving unit DM is configured to vibrate the vibrating body VB elastically supported by the elastic supporting member ES along the vibration axis VA according to the AC current supplied by the control unit CTR.

[0051] The elastic supporting member ES is an example of a supporting member, and is configured to be interposed between the housing HS and the vibrating body VB to elastically support the vibrating body VB.

[0052] Specifically, the vibration part VP including the vibrating body VB, the driving unit DM and the elastic supporting member ES is composed of the yoke 10, the bracket 11, the coil 12, the wiring substrate 13, the magnet 15 and the leaf spring 17. Moreover, the vibrating body VB is composed of the yoke 10 and the magnet 15, the driving unit DM is composed of the coil 12 and the magnet 15, and the elastic supporting member ES is composed of the leaf spring 17. In addition, the bracket 11, the coil 12 and the wiring substrate 13 together with the vibrating body VB constitute a non-vibrating non-vibrating body NV. The non-vibrating body NV vibrates together with the housing HS, but does not vibrate together with the vibrating body VB.

[0053] The yoke 10 is a component constituting a magnetic circuit. In the embodiment, the yoke 10 is formed of a magnetic material including iron and the like. In the illustrated example, the yoke 10 is composed of two components, an upper yoke 10U and a lower yoke 10D, and is formed of a cold-rolled steel sheet (SPCC). The upper yoke 10U is a component constituting the upper surface of the vibrating body VB, and includes a left plate portion LW, a right plate portion RW, and a top plate portion TW. Specifically, a convex portion PR is formed on the end surface on the Z2 side of each of the left plate portion LW and the right plate portion RW so as to be able to engage with a concave portion RC formed on the lower yoke 10D. The lower yoke 10D is a component constituting the lower surface of the vibrating body VB, and includes a bottom plate portion BW. Specifically, a concave portion RC is formed on the end surface on the Y1 side (left side) and the end surface on the Y2 side (right side) of the lower yoke 10D, respectively, so as to be able to engage with the convex portion PR formed on the upper yoke 10U.

[0054] The bracket 11 is an example of a conductive component that functions as a coil bracket for holding the coil 12, and is configured to support the coil 12 in a state where the coil 12 and the magnet 15 are placed opposite to each other in a non-contact manner. That is, the bracket 11 is configured to function as a coil holder for supporting the coil 12. In addition, the bracket 11 is fixed to the base member 2 in a manner that does not contact the vibrating body VB. In the present embodiment, the bracket 11 is a plate-shaped component formed of a non-magnetic material such as copper, aluminum, or an alloy thereof, and has a mounting plate portion 11A and a main body plate portion 11B. Specifically, the bracket 11 is fixed to the housing HS via four mounting plate portions 11A protruding outward from the main body plate portion 11B at a position where the bracket 11 and the coil 12 do not contact the vibrating body VB even when the vibrating body VB vibrates. That is, the bracket 11 on which the coil 12 is mounted is configured not to vibrate together with the vibrating body VB.

[0055] The coil 12 is configured to generate a magnetic field when supplied with electric current. Figure 3 In the example shown, the coil 12 includes three coil winding portions (a first coil winding portion 12A, a second coil winding portion 12B, and a third coil winding portion 12C) connected in series. The first coil winding portion 12A, the second coil winding portion 12B, and the third coil winding portion 12C each have a substantially elliptical shape (a rounded rectangle) having a major axis along the Y-axis direction. Furthermore, the coil 12 has a first end portion 12S on the winding start side and a second end portion 12E on the winding end side. In addition, the coil 12 is fixed to the surface on the Z2 side (lower side) of the bracket 11 by an adhesive or the like. The surface of the conductive wire (a wire material formed of copper or a copper alloy, etc.) constituting the coil 12 is insulated and coated. Figure 3 In the figure, for the sake of clarity, the coil 12 is shown in a simplified state, and the detailed winding state is omitted. The same is true in other figures.

[0056] The wiring substrate 13 is a component to which the first end 12S and the second end 12E of the coil 12 are connected. Figure 4 As shown in the figure below, it is fixed to the Z2 side (lower side) surface of the bracket 11 by an adhesive. Figure 4 is a stereogram of a non-vibrating body NV. Specifically, Figure 4 The above picture is a stereoscopic picture of the non-vibrating body NV from above. Figure 4 The figure below is a stereoscopic view of the non-vibrating body NV from below.

[0057] In the example shown in the figure, the wiring substrate 13 is a flexible wiring substrate having flexibility, and includes a left wiring substrate 13L and a right wiring substrate 13R. The left wiring substrate 13L and the right wiring substrate 13R are fixed to the end of the X1 side (front side) of the bracket 11 by adhesive or the like. Figure 4 As shown in the following figure, the first end 12S of the coil 12 is connected to the inner conductor pattern PI of the right wiring substrate 13R by solder or a conductive adhesive, and the second end 12E of the coil 12 is connected to the inner conductor pattern PI of the left wiring substrate 13L by solder or a conductive adhesive. In addition, the outer conductor pattern PE in each of the left wiring substrate 13L and the right wiring substrate 13R is connected to the wire from the control unit CTR by solder or a conductive adhesive. In addition, the "inside" refers to the side closer to the center of the vibration generating device 101 than the "outside".

[0058] The first coil winding portion 12A, the second coil winding portion 12B, and the third coil winding portion 12C each have an air core portion AC. Furthermore, the first end portion 12S, the first coil winding portion 12A, the second coil winding portion 12B, the third coil winding portion 12C, and the second end portion 12E are connected by a conductor portion CP. Specifically, the conductor portion CP is as follows: Figure 3 As shown, it includes the first wire portion CP1 to the fourth wire portion CP4. Moreover, the first end portion 12S is connected to the first coil winding portion 12A using the first wire portion CP1, the first coil winding portion 12A is connected to the second coil winding portion 12B using the second wire portion CP2, the second coil winding portion 12B is connected to the third coil winding portion 12C using the third wire portion CP3, and the third coil winding portion 12C is connected to the second end portion 12E using the fourth wire portion CP4.

[0059] In addition, the coil 12 is Figure 4As shown in the following figure, it includes a main harness portion MW extending in the Y-axis direction, and a sub-harness portion SW connecting two adjacent main harness portions MW. In the example shown in the figure, the main harness portion MW includes a plurality of conductors that have a rectangular shape when viewed from above and extend in the Y-axis direction (left-right direction), and the sub-harness portion SW includes a plurality of conductors that have a roughly semicircular shape when viewed from above and extend in a concentric circle shape. Specifically, the first coil winding portion 12A has a front main harness portion 12A1, a rear main harness portion 12A2, a left sub-harness portion 12A3, and a right sub-harness portion 12A4, the second coil winding portion 12B has a front main harness portion 12B1, a rear main harness portion 12B2, a left sub-harness portion 12B3, and a right sub-harness portion 12B4, and the third coil winding portion 12C has a front main harness portion 12C1, a rear main harness portion 12C2, a left sub-harness portion 12C3, and a right sub-harness portion 12C4. Furthermore, the main harness section MW includes a front main harness section 12A1, a rear main harness section 12A2, a front main harness section 12B1, a rear main harness section 12B2, a front main harness section 12C1, and a rear main harness section 12C2. In addition, the sub-harness section SW includes a left sub-harness section 12A3, a right sub-harness section 12A4, a left sub-harness section 12B3, a right sub-harness section 12B4, a left sub-harness section 12C3, and a right sub-harness section 12C4. Figure 4 In the lower figure, for the sake of clarity, the main wire harness portion MW of the coil 12 is marked with a dot pattern.

[0060] The magnet 15 is an example of a magnetic flux generating member, and together with the coil 12, constitutes the drive unit DM. Figure 3 As shown, it includes an upper magnet 15U and a lower magnet 15D. The upper magnet 15U and the lower magnet 15D are respectively 8-pole magnetized permanent magnets with a roughly rectangular shape. Specifically, the upper magnet 15U includes a first upper magnet part 15U1 to a fourth upper magnet part 15U4, and the lower magnet 15D includes a first lower magnet part 15D1 to a fourth lower magnet part 15D4. The first upper magnet part 15U1 to the fourth upper magnet part 15U4 and the first lower magnet part 15D1 to the fourth lower magnet part 15D4 respectively include an N-pole part and an S-pole part. In the example shown in the figure, the upper surfaces of the first upper magnet portion 15U1, the third upper magnet portion 15U3, the first lower magnet portion 15D1, and the third lower magnet portion 15D3 are each N-pole, and the upper surfaces of the second upper magnet portion 15U2, the fourth upper magnet portion 15U4, the second lower magnet portion 15D2, and the fourth lower magnet portion 15D4 are each S-pole. Figure 3In the figure, for the sake of clarity, the N pole of the permanent magnet with 8-pole magnetization is marked with a dot pattern, and the S pole is marked with a cross pattern. The same is true in other figures. In addition, the upper magnet 15U and the lower magnet 15D can be a combination of four permanent magnets with 2-pole magnetization or a combination of two permanent magnets with 4-pole magnetization.

[0061] The leaf spring 17 is an example of an elastic support member ES configured to be interposed between the housing HS and the vibrating body VB to elastically support the vibrating body VB. In the present embodiment, the leaf spring 17 is formed of a non-magnetic material such as austenitic stainless steel. Figure 3 As shown, it has a connecting portion 17A, a vibrating body supporting portion 17B and an elastic arm portion 17C.

[0062] Specifically, the leaf spring 17 is formed by, for example, punching and bending a metal plate made of austenitic stainless steel having a thickness of 0.2 mm. Figure 5 As shown, the connection portion 17A of the leaf spring 17 is welded to the bottom plate portion 2B of the base member 2. Furthermore, the leaf spring 17 is attached to the base member 2 only via the connection portion 17A in a state where a gap GP is formed between the bottom plate portion 2B of the base member 2 and the vibration body support portion 17B so that the vibration body support portion 17B and the elastic arm portion 17C do not contact the base member 2.

[0063] Figure 5 1 is a diagram showing a configuration example of the base member 2 and the elastic support member ES (leaf spring 17). Specifically, Figure 5 The upper figure is a perspective view of the base member 2 to which the elastic supporting member ES (leaf spring 17) is mounted. Figure 5 The figure below is a front view of the base member 2 with the elastic support member ES (leaf spring 17) installed, which is equivalent to Figure 5 The enlarged view of the range R1 surrounded by the dotted line in the above figure. Figure 5 In FIG. 1 , for the sake of clarity, the elastic supporting member ES (leaf spring 17 ) is marked with a dot pattern.

[0064] In this embodiment, the connecting portion 17A of the leaf spring 17 is as follows: Figure 5 As shown in the above figure, the leaf spring 17 includes first to fourth connection parts 17A1 to 17A4, and the elastic arm part 17C of the leaf spring 17 includes first to fourth elastic arm parts 17C1 to 17C4.

[0065] Moreover, if Figure 5 As shown in the above figure, the first connecting portion 17A1 to the fourth connecting portion 17A4 are fixed to the bottom plate portion 2B of the base member 2 by welding. Figure 6 As shown, the vibrator VB is welded to the vibrator support portion 17B of the leaf spring 17 . Figure 6is a three-dimensional diagram of the vibration part VP. Specifically, Figure 6 The upper figure is a three-dimensional view of the vibrating portion VP (elastic supporting member ES and vibrating body VB) in a state where the non-vibrating body NV (bracket 11, coil 12 and wiring substrate 13) is omitted from the illustration. Figure 6 The figure below is a three-dimensional diagram of the vibration part VP showing the state of the non-vibrating body NV. Figure 6 In the figure below, for the sake of clarity, the vibrating parts (vibrating body VB and elastic support member ES) are marked with dot patterns. The presence or absence of dot patterns indicates that the non-vibrating body NV without dot patterns is fixed to the base member 2 (in Figure 6 (not shown in the figure below). In addition, Figure 1 The lower figure shows the non-vibrating body NV fixed to the base member 2 in a manner not to contact the vibrating body VB.

[0066] Specifically, the vibrating body VB is as follows Figure 6 As shown in the above figure, it is composed of an upper yoke 10U, an upper magnet 15U, a lower magnet 15D and a lower yoke 10D. Moreover, the Z2 side (lower side) surface of the bottom plate portion BW of the lower yoke 10D is welded to the Z1 side (upper side) surface of the vibration body support portion 17B of the leaf spring 17.

[0067] exist Figure 6 In the state shown in the figure below, if an alternating current is applied to the coil 12 via the wiring substrate 13, the vibrating body VB vibrates along the vibration axis VA.

[0068] Here, refer to Figure 7 , the positional relationship of the components of the drive unit DM when the vibrating body VB vibrates along the vibration axis VA will be described. Figure 7 2 is a perspective view of the components of the drive unit DM. Specifically, Figure 7 The above figure shows the positional relationship between the non-vibrating body NV (coil 12) and the vibrating body VB (magnet 15) when current flows in one direction of the coil 12 and the vibrating body VB (magnet 15) moves to the X2 side (rear side). Figure 7 The central diagram of FIG. 1 shows the positional relationship between the non-vibrating body NV (coil 12 ) and the vibrating body VB (magnet 15 ) when no current flows through the coil 12 . Figure 7 The figure below shows the positional relationship between the non-vibrating body NV (coil 12) and the vibrating body VB (magnet 15) when current flows in the other direction of the coil 12 and the vibrating body VB (magnet 15) moves to the X1 side (front side).

[0069] When no current flows through the coil 12, the coil 12 does not generate a magnetic field, so neither repulsion nor attraction occurs between the coil 12 and the magnet 15. Figure 7 As shown in the central figure, the vibrating body VB (magnet 15) is positioned in the neutral position with its center facing the center of the coil 12 (second coil winding portion 12B). Specifically, the vibrating body VB (magnet 15) located outside the neutral position is urged by the elastic support member ES (leaf spring 17) to return to the neutral position.

[0070] If current flows from the first end 12S toward the second end 12E of the coil 12, the first coil winding portion 12A generates a magnetic field in a manner that the Z1 side becomes the N pole and the Z2 side becomes the S pole, the second coil winding portion 12B generates a magnetic field in a manner that the Z2 side becomes the N pole and the Z1 side becomes the S pole, and the third coil winding portion 12C generates a magnetic field in a manner that the Z1 side becomes the N pole and the Z2 side becomes the S pole. As a result, the N-pole portion of the second upper magnet portion 15U2 is away from the first coil winding portion 12A and is pulled toward the second coil winding portion 12B, the S-pole portion of the third upper magnet portion 15U3 is away from the second coil winding portion 12B and is pulled toward the third coil winding portion 12C, the S-pole portion of the second lower magnet portion 15D2 is away from the first coil winding portion 12A and is pulled toward the second coil winding portion 12B, and the N-pole portion of the third lower magnet portion 15D3 is away from the second coil winding portion 12B and is pulled toward the third coil winding portion 12C, whereby the vibrating body VB (magnet 15) is as shown. Figure 7 As shown by arrow AR1 in the upper figure, it moves toward the X2 side (rear side).

[0071] On the contrary, if current flows from the second end 12E of the coil 12 toward the first end 12S, the first coil winding portion 12A generates a magnetic field in such a way that the Z1 side becomes the S pole and the Z2 side becomes the N pole, the second coil winding portion 12B generates a magnetic field in such a way that the Z2 side becomes the S pole and the Z1 side becomes the N pole, and the third coil winding portion 12C generates a magnetic field in such a way that the Z1 side becomes the S pole and the Z2 side becomes the N pole. As a result, the N-pole portion of the second upper magnet portion 15U2 is away from the second coil winding portion 12B and is pulled toward the first coil winding portion 12A, the S-pole portion of the third upper magnet portion 15U3 is away from the third coil winding portion 12C and is pulled toward the second coil winding portion 12B, the S-pole portion of the second lower magnet portion 15D2 is away from the second coil winding portion 12B and is pulled toward the first coil winding portion 12A, and the N-pole portion of the third lower magnet portion 15D3 is away from the third coil winding portion 12C and is pulled toward the second coil winding portion 12B, whereby the vibrating body VB (magnet 15) is as shown. Figure 7 It moves toward the X1 side (front side) as shown by arrow AR2 in the lower figure.

[0072] The control unit CTR can alternately reverse the direction of the current flowing through the coil 12 to alternately reverse the direction of the magnetic field generated by the coil 12 , thereby causing the vibrating body VB (magnet 15 ) to vibrate along the vibration axis VA (X-axis direction).

[0073] Next, refer to Figure 8 , the operation of the elastic arm portion 17C when the vibrating body VB vibrates will be described. Figure 8 1 is a perspective view of the leaf spring 17. Specifically, Figure 8 The upper figure shows the state of the leaf spring 17 when no current flows through the coil 12, that is, when the vibrating body VB is in the neutral position (not vibrating). Figure 8 The lower figure shows the state of the leaf spring 17 when the vibrating body VB moves to the X2 side (rear side).

[0074] The elastic arm portion 17C is as follows Figure 8 As shown in the above figure, it is provided between the connection part 17A and the vibration body support part 17B. Specifically, the first elastic arm part 17C1 is provided between the first connection part 17A1 and the vibration body support part 17B, the second elastic arm part 17C2 is provided between the second connection part 17A2 and the vibration body support part 17B, the third elastic arm part 17C3 is provided between the third connection part 17A3 and the vibration body support part 17B, and the fourth elastic arm part 17C4 is provided between the fourth connection part 17A4 and the vibration body support part 17B.

[0075] If the vibrating body VB( Figure 8 (not shown) is moved in the direction indicated by the arrow AR3 by the driving unit DM, and the elastic arm portion 17C is as shown in FIG. Figure 8 As shown in the figure below, the vibration body VB can be translated in the X2 direction. Figure 8 In the figure, for the sake of clarity, the portion of the elastic arm portion 17C where the deflection is relatively large is marked with a dot pattern.

[0076] On the contrary, if the vibrating body VB is moved in the direction (X1 direction) opposite to the direction (X2 direction) indicated by the arrow AR3 by the driving unit DM, the elastic arm portion 17C moves in the direction opposite to the direction indicated by the arrow AR3. Figure 8 By bending in the direction opposite to the bending direction shown in the figure below, the vibrating body VB can be translated in the direction of X1.

[0077] Here, refer again Figure 3 , details of the upper yoke 10U are described. The upper yoke 10U has a top plate portion TW, a right plate portion RW, and a left plate portion LW. Specifically, a left plate portion LW extending in the Z2 direction is formed at the end portion on the Y1 side of the top plate portion TW, and a right plate portion RW extending in the Z2 direction is formed at the end portion on the Y2 side of the top plate portion TW. In addition, a convex portion PR is formed at the lower end of each of the left plate portion LW and the right plate portion RW so as to engage with a concave portion RC formed in the lower yoke 10D. Figure 6 The upper figure shows a state where the concave portion RC formed in the lower yoke 10D and the convex portion PR of the upper yoke 10U are engaged with each other.

[0078] When assembling the vibrating body VB, the top plate portion TW (see Figure 3 ) The upper magnet 15U is mounted on the bottom plate portion BW of the lower yoke 10D (see Figure 3 ) The lower magnet 15D is installed, and then the protrusion PR of the upper yoke 10U is engaged with the recess RC of the lower yoke 10D. In this way, in the present embodiment, the vibrating body VB makes the upper yoke 10U and the lower yoke 10D surrounding the magnet 15 different parts in order to simplify assembly.

[0079] In addition, if Figure 6 As shown in the figure above, the Z1 side (upper side) surface of the upper magnet 15U is joined to the Z2 side (lower side) surface of the top plate portion TW of the upper yoke 10U under the action of magnetic force, and the Z2 side (lower side) surface of the lower magnet 15D is joined to the Z1 side (upper side) surface of the bottom plate portion BW of the lower yoke 10D under the action of magnetic force. Moreover, in the space surrounded by the upper yoke 10U and the lower yoke 10D, as shown in FIG. Figure 6 As shown in the lower figure, the coil 12 fixed to the bracket 11 in a non-contact state with the upper magnet 15U and the lower magnet 15D is provided on the Z2 side of the upper magnet 15U and on the Z1 side of the lower magnet 15D.

[0080] like Fig. 9 As shown, the bracket 11 is attached to the base member 2 by engaging the mounting plate portion 11A provided on the bracket 11 with the support portion 2P provided on the base member 2 . Fig. 9 1 is a diagram showing a configuration example of the base member 2 and the bracket 11. Specifically, Fig. 9 The above figure is a three-dimensional diagram of the bracket 11. Fig. 9 The central figure is a three-dimensional view of the base member 2. Fig. 9 The lower figure is a three-dimensional view of the bracket 11 installed on the base member 2.

[0081] like Fig. 9As shown, the mounting plate portion 11A includes the first mounting plate portion 11A1 to the fourth mounting plate portion 11A4. In addition, the support portion 2P includes the first support portion 2P1 to the fourth support portion 2P4. Moreover, the first mounting plate portion 11A1 is engaged with the first support portion 2P1, the second mounting plate portion 11A2 is engaged with the second support portion 2P2, the third mounting plate portion 11A3 is engaged with the third support portion 2P3, and the fourth mounting plate portion 11A4 is engaged with the fourth support portion 2P4. Specifically, through holes 11H are formed in the first mounting plate portion 11A1 to the fourth mounting plate portion 11A4, respectively, and convex portions 2Q protruding upward are formed in the first support portion 2P1 to the fourth support portion 2P4, respectively. Furthermore, the first mounting plate portion 11A1 and the first supporting portion 2P1 are engaged with each other in a state where the lower surface of the first mounting plate portion 11A1 contacts the two protruding supporting portions 2D in the first supporting portion 2P1 and the convex portion 2Q located in the first supporting portion 2P1 is inserted into the through hole 11H located in the first mounting plate portion 11A1. The engagement of the second mounting plate portion 11A2 and the second supporting portion 2P2, the engagement of the third mounting plate portion 11A3 and the third supporting portion 2P3, and the engagement of the fourth mounting plate portion 11A4 and the fourth supporting portion 2P4 are similar. In addition, the details of the engagement of the mounting plate portion 11A and the housing HS will be described later.

[0082] Next, refer to Fig.10 , the magnetic flux generated by the magnet 15 is described. Fig.10 1 is a diagram showing a configuration example of the base member 2, the bracket 11, the coil 12, and the vibrating body VB. Specifically, Fig.10 The upper figure is a top view of the base member 2, the bracket 11 and the vibrating body VB. Fig.10 In the above figure, for the sake of clarity, the bracket 11 is marked with a dot pattern. Fig.10 The lower figure is a cross-sectional view of the base member 2, the bracket 11, the coil 12 and the vibrating body VB. Specifically, Fig.10 The following figure is a cross-sectional view of the base member 2, the bracket 11, the coil 12 and the vibrating body VB in a virtual plane parallel to the XZ plane as viewed from the Y2 side. The XZ plane is a plane including Fig.10 More specifically, Fig.10 The figure below shows a vibrating body VB composed of an upper yoke 10U, an upper magnet 15U, a lower magnet 15D and the lower yoke 10D, and a coil 12 disposed inside a space surrounded by the upper yoke 10U and the lower yoke 10D (a space sandwiched between the upper magnet 15U and the lower magnet 15D). The magnet 15 generates a vibration such as Fig.10 The magnetic flux lines MF shown by the dotted lines in the figure below represent the magnetic flux. Fig.10 In the example shown in the following figure, the magnetic flux lines MF include first to sixth magnetic flux lines MF1 to MF6.

[0083] Specifically, in a state where no current flows through the coil 12, the first magnetic flux line MF1 comes out from the N-pole portion of the first lower magnet portion 15D1 of the lower magnet 15D, passes through the front main wire harness portion 12A1 of the first coil winding portion 12A, and enters the S-pole portion of the first upper magnet portion 15U1 of the upper magnet 15U. The second magnetic flux line MF2 comes out from the N-pole portion of the second upper magnet portion 15U2 of the upper magnet 15U, passes through the rear main wire harness portion 12A2 of the first coil winding portion 12A, and enters the S-pole portion of the second lower magnet portion 15D2 of the lower magnet 15D. The third magnetic flux line MF3 comes out from the N-pole portion of the second upper magnet portion 15U2 of the upper magnet 15U, passes through the front main wire harness portion 12B1 of the second coil winding portion 12B, and enters the S-pole portion of the second lower magnet portion 15D2 of the lower magnet 15D. The fourth magnetic flux line MF4 comes out from the N-pole portion of the third lower magnet portion 15D3 of the lower magnet 15D, passes through the rear main wire harness portion 12B2 of the second coil winding portion 12B, and enters the S-pole portion of the third upper magnet portion 15U3 of the upper magnet 15U. The fifth magnetic flux line MF5 comes out from the N-pole portion of the third lower magnet portion 15D3 of the lower magnet 15D, passes through the front main wire harness portion 12C1 of the third coil winding portion 12C, and enters the S-pole portion of the third upper magnet portion 15U3 of the upper magnet 15U. The sixth magnetic flux line MF6 comes out from the N-pole portion of the fourth upper magnet portion 15U4 of the upper magnet 15U, passes through the rear main wire harness portion 12C2 of the third coil winding portion 12C, and enters the S-pole portion of the fourth lower magnet portion 15D4 of the lower magnet 15D.

[0084] Therefore, in the space surrounded by the upper yoke 10U and the lower yoke 10D, the magnetic flux lines are concentrated in the partial space between the upper magnet 15U and the lower magnet 15D, and the magnetic flux density becomes high, and the coil 12 is set in this partial space. Therefore, this structure can efficiently generate the Lorentz force by passing the current between the first end 12S and the second end 12E of the coil 12, and can make the vibrator VB vibrate efficiently in the X-axis direction.

[0085] For example, if current flows from the first end 12S toward the second end 12E of the coil 12, the vibrating body VB moves toward the X2 side (rear side). In addition, if current flows from the second end 12E toward the first end 12S of the coil 12, the vibrating body VB moves toward the X1 side (front side). Therefore, the control unit CTR can make the vibrating body VB vibrate along the vibration axis VA by passing current in a manner that alternately reverses the direction of the current flowing through the coil 12. In addition, the bracket 11 on which the coil 12 is mounted is fixed to the base member 2, and is not fixed to the vibrating body VB, so the bracket 11 and the coil 12 do not vibrate together with the vibrating body VB.

[0086] In addition, if the vibrating body VB vibrates along the vibration axis VA, the magnetic flux (hereinafter referred to as "effective magnetic flux") extending in the Z-axis direction generated between the upper magnet 15U and the lower magnet 15D contained in the vibrating body VB also vibrates along the vibration axis VA. That is, the effective magnetic flux passing through the bracket 11 as a conductive component located between the upper magnet 15U and the lower magnet 15D vibrates along the vibration axis VA while maintaining the relationship of passing through the bracket 11. Therefore, eddy current flows in the main plate portion 11B of the bracket 11. In addition, in the example shown in the figure, the upper magnet 15U, the lower magnet 15D and the bracket 11 are arranged in a manner that the effective magnetic flux is orthogonal to the main plate portion 11B.

[0087] The vibrating body VB is always subjected to a force caused by eddy currents acting in a direction opposite to the vibration direction, that is, a braking force. Specifically, the vibrating body VB is vibrated by the Lorentz force generated by the drive unit DM, while being subjected to a braking force that acts to decelerate the vibration. Moreover, the braking force increases in proportion to the vibration speed of the vibrating body VB. Therefore, the vibration acceleration at the natural frequency of the vibrating body VB and the frequency near it is reduced by the braking force.

[0088] In addition, the larger the eddy current, the greater the braking force caused by the eddy current. In addition, the smaller the resistivity of the conductive component (bracket 11), the larger the eddy current, the greater the conductivity of the conductive component (bracket 11), the larger the eddy current, and the greater the thickness of the conductive component (bracket 11) (the thickness of the main plate 11B), the larger the eddy current. Therefore, for the bracket 11, its material and thickness are selected in order to obtain the desired braking force. In the example shown in the figure, the bracket 11 is formed of the same material as the wire material of the coil 12, namely, refined copper, and has a thickness of about 0.3 mm.

[0089] With this configuration, the durability of the vibration generating device 101 can be improved compared to the case where the viscoelastic component for generating the braking force is installed between the vibrating body VB and the non-vibrating body NV. This is because the viscoelastic component is easily affected by the ambient temperature, dimensional deviation, degradation, peeling, or tearing, but the bracket 11 is not easily affected by them.

[0090] In addition, the bracket 11 is as Figure 4 As shown in the above figure, it is formed to have a plurality of openings (three first openings H1, three second openings H2 and six third openings H3). At least one of the plurality of openings may also be a notch.

[0091] The first opening H1 is a non-circular (substantially tear-drop-shaped) opening for preventing the main body plate 11B from interfering with the conductor portion CP when the coil 12 is mounted on the lower surface of the main body plate 11B of the bracket 11 and tilting the upper surface of the coil 12 relative to the lower surface of the main body plate 11B.

[0092] The second opening H2 is a substantially circular opening for receiving a jig (not shown) used for positioning the air core portion AC of the coil 12. The jig (not shown) is, for example, a cylindrical rod member. In the illustrated example, the first opening H1 also functions as an opening for receiving the jig.

[0093] The third opening H3 is a substantially circular opening formed to insert a jig for maintaining an appropriate gap between the bracket 11 and the coil 12 when supplying adhesive between the lower surface of the main body plate portion 11B of the bracket 11 and the upper surface of the coil 12 .

[0094] In the example shown in the figure, the first opening H1 to the third opening H3 are all formed at positions avoiding the track TR. The track TR is the track on the main plate portion 11B through which the center axis of the effective magnetic flux passes when the vibrating body VB vibrates. That is, the vibration generating device 101 is configured so that the center axis of the effective magnetic flux extending in the Z-axis direction moves in the X-axis direction along the linear track TR. In the example shown in the figure, Fig.10 As shown by the magnetic flux lines MF, the center axis of the effective magnetic flux includes the center axes of the effective magnetic fluxes generated by the first lower magnet portion 15D1, the second upper magnet portion 15U2, the third lower magnet portion 15D3, and the fourth upper magnet portion 15U4, respectively. In addition, the trajectory TR is located on the vibration axis VA when viewed from above. In addition, the center axis of the effective magnetic flux can also be renamed as the coil axis of each of the first coil winding portion 12A, the second coil winding portion 12B, and the third coil winding portion 12C.

[0095] In other words, the first opening H1 to the third opening H3 are all formed at positions avoiding the central region CR. The central region CR is a region including the track TR located in the central part of the main plate portion 11B. Specifically, the central region CR is a region through which the effective magnetic flux generated by the magnet 15 and the eddy current generated by the conductive component (bracket 11) arranged to pass through the effective magnetic flux flow. Figure 4 In the above figure, for the sake of clarity, the central area CR is marked with a dot pattern.

[0096] In the example shown in the figure, the vibration generating device 101 does not have openings such as the first opening H1 to the third opening H3 formed in the rectangular central region CR of the main plate portion 11B, so that the eddy current flows more easily than when the opening is formed in the central region CR. In addition, since the vibration generating device 101 has a flat rectangular central region CR in the main plate portion 11B and does not have concave portions or convex portions, the eddy current flows more easily than when the central region CR is uneven with concave portions or convex portions formed in the central region CR.

[0097] In addition, the central region CR is bilaterally symmetrical about the vibration axis VA in a plan view and is symmetrical about the line segment L1 (see Figure 4 The line segment L1 represents the left-right axis passing through the center point of the bracket 11. This structure brings about the following effect: the magnitude of the braking force when the vibrating body VB moves to the front (X1 direction) is the same as the magnitude of the braking force when the vibrating body VB moves to the back (X2 direction).

[0098] Next, refer to Fig.11 as well as Fig.12 , the assembly method of the vibration generating device 101 is described. Fig.11 as well as Fig.12 1 is a perspective view of the components constituting the vibration generating device 101. Fig.11 as well as Fig.12 , newly installed parts are marked with a dot pattern for clarity.

[0099] Specifically, Fig.11 The above figure is a three-dimensional diagram of the leaf spring 17. Fig.11 The central figure is a perspective view of the leaf spring 17 to which the lower yoke 10D is mounted. Fig.11 The following figure shows the installation Fig.11 The center figure is a perspective view of the base member 2 with the leaf spring 17 in the state shown.

[0100] Fig.12 The top figure is a perspective view of the base member 2 to which the lower magnet 15D is also installed. Fig.12 The second figure from the top is a three-dimensional view of the base member 2 on which the bracket 11 and the coil 12 are also installed. Fig.12 The third figure from the top is a perspective view of the base member 2 to which the upper magnet 15U, the upper yoke 10U and the wiring substrate 13 are also mounted. Fig.12 The bottom figure is a stereoscopic view of the base component 2 to which the cover component 1 is also installed, that is, a stereoscopic view of the vibration generating device 101.

[0101] First, if Fig.11 As shown in the central figure of the figure, the lower yoke 10D overlaps the upper surface of the vibration body support part 17B of the leaf spring 17. In the example shown in the figure, the bottom plate part BW of the lower yoke 10D overlaps the upper surface of the vibration body support part 17B without applying an adhesive. In addition, a reinforcing material, i.e., a vibration-damping steel plate (not shown) for suppressing the deflection of the upright part EP may be adhered to the outer side surface of the upright part EP of the elastic arm part 17C of the leaf spring 17.

[0102] Afterwards, if Fig.11As shown in the figure below, the leaf spring 17 overlapped with the lower yoke 10D is provided on the upper surface of the bottom plate portion 2B of the base member 2. The lower yoke 10D is joined to the leaf spring 17, and the base member 2 is joined to the leaf spring 17. In the example shown in the figure, the bottom plate portion BW of the lower yoke 10D is joined to the upper surface of the vibration body support portion 17B of the leaf spring 17 by laser welding, and the connection portion 17A of the leaf spring 17 is joined to the upper surface of the bottom plate portion 2B of the base member 2 by laser welding.

[0103] Afterwards, if Fig.12 As shown in the top figure, the lower magnet 15D is overlapped on the upper surface of the bottom plate portion BW of the lower yoke 10D. In the example shown in the figure, the lower yoke 10D and the lower magnet 15D are mutually attracted by magnetic force, so they are not joined by laser welding or adhesive. However, the lower yoke 10D and the lower magnet 15D may be joined by laser welding or adhesive.

[0104] Afterwards, if Fig.12 As shown in the second figure from the top, a non-vibrating body NV is installed on the base member 2. In the example shown in the figure, the non-vibrating body NV is composed of a bracket 11, a coil 12, and a wiring substrate 13. In addition, before the non-vibrating body NV is installed on the base member 2, the coil 12 is joined to the bracket 11 by an adhesive, and the wiring substrate 13 is joined to the bracket 11 by a double-sided tape.

[0105] Afterwards, if Fig.12 As shown in the third figure from the top, the upper yoke 10U equipped with the upper magnet 15U is joined to the lower yoke 10D at a position that does not contact the non-vibrating body NV. Specifically, the upper yoke 10U and the lower yoke 10D are joined by welding or adhesive at a portion where the concave portion RC formed in the lower yoke 10D and the convex portion PR of the upper yoke 10U are engaged. In the example shown in the figure, the upper yoke 10U and the lower yoke 10D are joined by laser welding.

[0106] In addition, the upper magnet 15U overlaps the lower surface of the top plate portion TW of the upper yoke 10U before the upper yoke 10U is joined to the lower yoke 10D, similarly to the case where the lower magnet 15D overlaps the upper surface of the bottom plate portion BW of the lower yoke 10D. The upper yoke 10U and the upper magnet 15U are mutually attracted by magnetic force, so they are not joined by laser welding or adhesive. However, the upper yoke 10U and the upper magnet 15U may be joined by laser welding or adhesive.

[0107] Afterwards, if Fig.12As shown in the bottom figure, the cover member 1 is installed in a manner covering the base member 2 and the components other than the wiring substrate 13. In the example shown in the figure, the lower end of the outer peripheral wall portion 1A of the cover member 1 is joined to the peripheral edge portion of the bottom plate portion 2B of the base member 2 by laser welding. In addition, the cover member 1 and the base member 2 may also be joined by a fastening member, an adhesive, or riveting.

[0108] In this way, the vibration generating device 101 is assembled. In addition, the adhesive used in the above-mentioned assembly process may be any one of a thermosetting adhesive, a light-curing adhesive, a moisture-curing adhesive, or a hybrid adhesive as a combination thereof. In the example shown in the figure, the adhesive is a thermosetting adhesive.

[0109] Next, refer to Fig.13 , details of the reinforcement structure of the bracket 11 are described. Fig.13 The bracket 11 is shown in three views (top view, front view and right side view) and a cross-sectional view. Specifically, Fig.13 The bottom picture is from the X1 side and includes Fig.13 A diagram of a cross section of the base member 2 on a virtual plane parallel to the YZ plane of the one-dot chain line L3 in the top view.

[0110] In the example shown in the figure, the bracket 11 is formed of a copper plate processed by rolling. Therefore, the bracket 11 has a rolling defect (roller mark RM). Fig.13 The dotted line drawn on the upper surface of the main body plate portion 11B of the bracket 11 in FIG. 1 represents a roller mark RM.

[0111] In addition, a reinforcement portion RF is formed at the left and right ends of the main plate portion 11B. In the example shown in the figure, the reinforcement portion RF is a portion that is subjected to a so-called Z-bend (step bend), and the bending line FL on the lower side of the reinforcement portion RF is formed perpendicular to the roller mark RM. Specifically, a left reinforcement portion RFL is formed at the left end of the main plate portion 11B, and a right reinforcement portion RFR is formed at the right end of the main plate portion 11B.

[0112] In addition, as shown in the cross-sectional view, the left reinforcing portion RFL includes a first bent portion FD1 bent upward from the left end of the main plate portion 11B, a first reinforcing plate portion RP1 extending upward from the upper end of the first bent portion FD1, a second bent portion FD2 bent leftward from the upper end of the first reinforcing plate portion RP1, and a second reinforcing plate portion RP2 extending leftward from the left end of the second bent portion FD2. The same is true for the right reinforcing portion RFR.

[0113] In addition, the mounting plate portion 11A is Fig.13As shown, it is extended outward from the outer end of the second reinforcing plate portion RP2. Specifically, the first mounting plate portion 11A1 is formed to extend to the right from the right rear end of the second reinforcing plate portion RP2 of the right reinforcing portion RFR, and the second mounting plate portion 11A2 is formed to extend to the right from the right front end of the second reinforcing plate portion RP2 of the right reinforcing portion RFR. Similarly, the third mounting plate portion 11A3 is formed to extend to the left from the left front end of the second reinforcing plate portion RP2 of the left reinforcing portion RFL, and the fourth mounting plate portion 11A4 is formed to extend to the left from the left rear end of the second reinforcing plate portion RP2 of the left reinforcing portion RFL.

[0114] In addition, the bracket 11 includes inner conductor patterns PI (see FIG. 1 ) for placing the wiring substrate 13 on both sides of the front end portion. Figure 4 Specifically, the bracket 11 includes a left side seat portion FPL for mounting the inner conductor pattern PI of the left wiring substrate 13L and a right side seat portion FPR for mounting the inner conductor pattern PI of the right wiring substrate 13R.

[0115] Next, refer to Fig.14 , the positional relationship among the base member 2, the yoke 10, the bracket 11, the coil 12, and the magnet 15 will be described. Fig.14 1 is a cross-sectional view of the base member 2, the yoke 10, the bracket 11, the coil 12 and the magnet 15. Specifically, Fig.14 The above picture is viewed from the X1 side and includes Fig.10 A cross-sectional view of each component on a virtual plane parallel to the YZ plane of the single-dot chain line L4 in the above figure. Fig.14 The following figure is equivalent to Fig.14 The enlarged view of the range R2 surrounded by the dotted line in the above figure. Fig.14 In the following figure, for the sake of clarity, the cross-sections of the first bend portion FD1 and the second bend portion FD2 constituting the left reinforcement portion RFL are marked with a cross pattern, the cross-sections of the first reinforcement plate portion RP1 and the second reinforcement plate portion RP2 constituting the left reinforcement portion RFL are marked with a dot pattern, and on other cross-sections, oblique line patterns indicating cross-sections of metal parts are marked.

[0116] In the example shown in the figure, Fig.14As shown in the figure below, the reinforcement part RF is configured so that at least a part is located in the space SP. The space SP is equivalent to the portion of the space above the coil 12 that is not occupied by the upper magnet 15U. Specifically, the space SP is equivalent to the portion of the space above the secondary wiring harness portion SW of the coil 12 that is not occupied by the upper magnet 15U. No permanent magnet is configured in the space SP. This is because even if a permanent magnet is configured, the permanent magnet cannot effectively generate a driving force suitable for driving the vibrating body VB. Therefore, the space SP is suitable as a place to configure at least a part of the reinforcement part RF without reducing the driving force of the drive unit DM.

[0117] Specifically, the space SP includes a left space SPL for accommodating at least a portion of the left reinforcing portion RFL and a right space SPR for accommodating at least a portion of the right reinforcing portion RFR. Fig.14 As shown in the above figure, the left space SPL includes a portion of the space above the left side auxiliary wiring harness portion 12C3 of the third coil winding portion 12C that is not occupied by the upper magnet 15U, and the right space SPR includes a portion of the space above the right side auxiliary wiring harness portion 12C4 of the third coil winding portion 12C that is not occupied by the upper magnet 15U.

[0118] With this configuration, the reinforcing portion RF is arranged in the space SP so as to hardly protrude from the outline of the coil 12 in a plan view. Therefore, this configuration has an effect of miniaturizing the vibration generator 101 without reducing the driving force.

[0119] Next, refer to Fig.15 Next, a bracket 11V as another configuration example of the bracket 11 will be described. Fig.15 1 is a cross-sectional view of the base member 2, the yoke 10, the bracket 11 (bracket 11V), the coil 12, and the magnet 15. Specifically, Fig.15 The above picture is viewed from the X1 side and includes Fig.10 The figure is obtained by taking a cross section of each component in a virtual plane parallel to the YZ plane of the single-point dashed line L5 in the above figure. Fig.15 The lower figure is a cross-sectional view of the base member 2, the yoke 10, the bracket 11V, the coil 12 and the magnet 15, and Fig.15 That is, Fig.15 The following figure is equivalent to Fig.15 FIG. 11A and 11B are diagrams showing bracket 11V replaced with bracket 11 in the above diagram.

[0120] The bracket 11V is different from the bracket 11 which has the reinforcement portion RF extending over substantially the entire length of the main body plate portion 11B in the X-axis direction in that it has the reinforcement portion RF extending between the two mounting plate portions 11A at both ends (left end and right end) of the main body plate portion 11B in the Y-axis direction. Specifically, in the bracket 11V, the right reinforcement portion RFR is formed to extend between the first mounting plate portion 11A1 and the second mounting plate portion 11A2, and the left reinforcement portion RFL is formed to extend between the third mounting plate portion 11A3 and the fourth mounting plate portion 11A4. That is, in the bracket 11V, no reinforcement portion is formed at the left front end portion, the left rear end portion, the right front end portion, and the right rear end portion of the main body plate portion 11B. However, the bracket 11V may be formed so that the reinforcement portion RF extends over substantially the entire length of the main body plate portion 11B in the X-axis direction.

[0121] The bracket 11V is different from the bracket 11 in that the second bent portion FD2 and the second reinforcing plate portion RP2 are omitted and the first reinforcing plate portion RP1 extends upward to the vicinity of the lower surface (ceiling surface) of the upper yoke 10U.

[0122] In addition, the bracket 11V is different from the bracket 11 in which the mounting plate portion 11A is formed to extend outward from the main body plate portion 11B without passing through the reinforcing portion RF. That is, in the bracket 11V, the upper surface of the mounting plate portion 11A and the upper surface of the main body plate portion 11B are substantially flush with each other.

[0123] Even when the bracket 11V is provided instead of the bracket 11, the vibration generating device 101 can be miniaturized without reducing the driving force, as in the case of the bracket 11. This is because at least a portion of the left reinforcing portion RFL is accommodated in the left space SPL, and at least a portion of the right reinforcing portion RFR is accommodated in the right space SPR. In addition, the bracket 11V has an effect of being easier to process than the bracket 11.

[0124] Next, refer to Fig.16 , a bracket 11W which is another configuration example of the bracket 11 will be described. Fig.16 The bracket 11W is a perspective view of the bracket 11W. The bracket 11W has four base portions FP and the third opening H3 is omitted (see Figure 4 ) in this respect, it is different from the bracket 11 having two pedestal portions FP, but is the same as the bracket 11 in other respects.

[0125] Specifically, in the bracket 11W, the right reinforcing portion RFR includes portions where the first mounting plate portion 11A1 and the second mounting plate portion 11A2 are respectively configured, and is formed to extend between the first mounting plate portion 11A1 and the second mounting plate portion 11A2. Similarly, the left reinforcing portion RFL includes portions where the third mounting plate portion 11A3 and the fourth mounting plate portion 11A4 are respectively configured, and is formed to extend between the third mounting plate portion 11A3 and the fourth mounting plate portion 11A4. Furthermore, the reinforcing portions RF of the bracket 11W are identical to the reinforcing portions RF in the bracket 11 (see Fig.14 ) is the same as that of the first reinforcing plate portion RP1, and includes a first bending portion FD1, a first reinforcing plate portion RP1, a second bending portion FD2 and a second reinforcing plate portion RP2.

[0126] Even when the bracket 11W is provided instead of the bracket 11, the vibration generating device 101 can be miniaturized without reducing the driving force, as in the case of the bracket 11. This is because at least a portion of the left reinforcing portion RFL is accommodated in the left space SPL, and at least a portion of the right reinforcing portion RFR is accommodated in the right space SPR.

[0127] Next, refer to Fig.17 , a bracket 11X which is another configuration example of the bracket 11 will be described. Fig.17 It is a three-dimensional view of the bracket 11X. The bracket 11X is different from the bracket 11 in that it has reinforcement portions RF (left reinforcement portion RFL and right reinforcement portion RFR) at both ends (left end and right end) of the main body plate portion 11B in the Y-axis direction and extending over the entire length in the X-axis direction, but is the same as the bracket 11 in other points. Specifically, the left reinforcement portion RFL is formed to extend over the entire length of the left edge of the main body plate portion 11B in the X-axis direction, and the right reinforcement portion RFR is formed to extend over the entire length of the right edge of the main body plate portion 11B in the X-axis direction. Furthermore, the reinforcement portions RF of the bracket 11X are identical to the reinforcement portions RF in the bracket 11 (see Fig.14 ) is the same as the first reinforcing plate portion RP1, and includes a first bending portion FD1, a first reinforcing plate portion RP1, a second bending portion FD2 and a second reinforcing plate portion RP2.

[0128] Even when the bracket 11X is provided instead of the bracket 11, the vibration generating device 101 can be miniaturized without reducing the driving force, as in the case of the bracket 11. This is because at least a portion of the left reinforcing portion RFL is accommodated in the left space SPL, and at least a portion of the right reinforcing portion RFR is accommodated in the right space SPR.

[0129] Next, refer to Fig.18 as well as Fig.19 , the cover part 1 will be described in detail. Fig.18These are three-view diagrams of the cover member 1 (a front view, a bottom view, and a left side view). Fig.19 This is an enlarged view of the beam plate portion 1C which is a part of the cover member 1. Specifically, Fig.19 The above picture is Fig.18 The enlarged view of the beam plate portion 1C within a range R3 surrounded by a dotted line in FIG. 1 shows the beam plate portion 1C bent into an L-shape. Fig.19 The following figure is with Fig.19 The enlarged view of the beam plate portion 1C corresponding to the upper figure shows a state in which the beam plate portion 1C bent into an L shape is stretched straight.

[0130] The beam plate portion 1C as a part of the cover member 1 is a portion bent toward the inside of the cover member 1. In the example shown in the figure, the beam plate portion 1C is a cantilever beam-shaped portion included in the outer peripheral wall portion 1A of the cover member 1, and includes a first beam plate portion 1C1 extending rearward from the rear edge portion of the first side plate portion 1A1, a second beam plate portion 1C2 extending forward from the front edge portion of the first side plate portion 1A1, a third beam plate portion 1C3 extending forward from the rear edge portion of the third side plate portion 1A3, and a fourth beam plate portion 1C4 extending rearward from the rear edge portion of the third side plate portion 1A3.

[0131] More specifically, the fourth beam plate portion 1C4 is as follows Fig.19 As shown in the above figure, it includes a root NR extending to the rear side along the plate surface direction (X-axis direction) of the third side plate portion 1A3, a bent portion NF bent from the front end (rear end) of the root NR toward the inner side of the cover component 1, and an inner end portion NT extending from the front end (inner end) of the bent portion NF to the inner side of the cover component 1. The same is true for the first beam plate portion 1C1 to the third beam plate portion 1C3. Specifically, the fourth beam plate portion 1C4 and the first beam plate portion 1C1 are configured to be line-symmetrical about the vibration axis VA when viewed from above, and the fourth beam plate portion 1C4 and the third beam plate portion 1C3 are configured to be line-symmetrical about the dotted line L6 when viewed from above. The dotted line L6 is a line segment passing through the center of the cover component 1 and perpendicular to the vibration axis VA. Moreover, the third beam plate portion 1C3 and the second beam plate portion 1C2 are configured to be line-symmetrical about the vibration axis VA when viewed from above, and the first beam plate portion 1C1 and the second beam plate portion 1C2 are configured to be line-symmetrical about the dotted line L6 when viewed from above.

[0132] In the example shown in the figure, the cover member 1 is formed by shearing and bending a metal plate. Fig.19 The shape is as shown in the figure below, and then it is bent at the bending portion NF, as shown in Fig.18 As shown in FIG. 1 , the first beam plate portion 1C1 to the third beam plate portion 1C3 are formed in an L-shape when viewed from below.

[0133] In addition, the fourth beam plate portion 1C4 is as follows Fig.19As shown in the figure below, the inner end portion NT has a protrusion NP at the lower front end. The protrusion NP is a portion that contacts the upper surface of the mounting plate portion 11A of the bracket 11. Fig.19 In the figure, for the sake of clarity, the protrusion NP is marked with a dot pattern. In the example shown in the figure, the protrusion NP includes a rounded corner, namely a first corner NPR, and an angular corner, namely a second corner NPS. The rounded corner, namely the first corner NPR, is a structure for promoting (not hindering) the inward sliding of the protrusion NP on the upper surface of the mounting plate portion 11A when the protrusion NP of the beam plate portion 1C is brought into contact with the upper surface of the mounting plate portion 11A of the bracket 11. On the contrary, the angular corner, namely the second corner NPS, is a structure for suppressing the outward sliding of the protrusion NP on the upper surface of the mounting plate portion 11A when the protrusion NP of the beam plate portion 1C is brought into contact with the upper surface of the mounting plate portion 11A of the bracket 11. In addition, the details of the contact between the protrusion NP and the upper surface of the mounting plate portion 11A will be described later.

[0134] Next, refer to Figure 20 to Figure 23 , the connection relationship between the cover component 1, the base component 2 and the bracket 11 will be described. Fig. 20 1 is a left side view of the vibration generating device 101. Specifically, Fig. 20 The upper figure is a left side view of the vibration generating device 101 with the cover member 1 and the base member 2 omitted. Fig. 20 The lower figure is a left side view of the vibration generator 101 in which the parts other than the cover member 1, the base member 2, and the bracket 11 are omitted. Fig.21 1 is a left side view of a portion of the vibration generating device 101. Specifically, Fig.21 The left picture is Fig. 20 This is an enlarged view of the portion of R4 enclosed by the dotted line in the above figure. Fig.21 The right picture is Fig. 20 This is an enlarged view of the portion included in the range R5 surrounded by the dotted line in the figure below. Fig. 22 is a cross-sectional view of a portion of the vibration generating device 101. Specifically, Fig. 22 The left picture is viewed from the X2 side and includes Fig.21 The cross-sectional view of each component on a virtual plane parallel to the YZ plane of the single-dot chain line L7 shown in the left figure, Fig. 22 The right picture is viewed from the X2 side and includes Fig.21 The right figure is a cross-sectional view of each component on a virtual plane parallel to the YZ plane of the single-dot chain line L8. Fig.23 1 is a perspective view of the left rear portion of a part of the vibration generating device 101. Specifically, Fig.23The above figure is a perspective view of the vibration generating device 101 when the beam plate portion 1C is in a state of being bent outward (when the mounting plate portion 11A is not clamped by the beam plate portion 1C of the cover member 1 and the support portion 2P of the base member 2). Fig.23 The lower figure is a perspective view of the vibration generating device 101 when the beam plate portion 1C is in a state of being pressed inward (when the mounting plate portion 11A is clamped by the beam plate portion 1C of the cover member 1 and the support portion 2P of the base member 2).

[0135] like Fig. 20 As shown in FIG. 1 , the bracket 11 is configured to be sandwiched between the cover member 1 and the base member 2 in the Z-axis direction. Specifically, the mounting plate portion 11A of the bracket 11 (see FIG. 1 ) Fig. 20 ) in such a way that the upper surface is aligned with the protruding portion NP of the beam plate portion 1C of the cover member 1 (see Fig. 20 The lower surface is in contact with two protruding support portions 2D (see the figure below) in the support portion 2P of the base member 2. Fig. 20 The cover member 1 (beam plate portion 1C) is clamped by the base member 2 (support portion 2P) in a state of contact (see the lower figure).

[0136] More specifically, the mounting plate portion 11A is as follows Fig. 22 As shown in the left figure of FIG. , it includes a flat plate portion KS extending parallel to the XY plane, a bent portion KF bent downward from the outer end of the flat plate portion KS, and a front end portion KD extending downward from the lower end of the bent portion KF. Fig.21 As shown in the left figure, a through hole 11H is formed in the mounting plate portion 11A so as to span the flat plate portion KS, the bent portion KF and the front end portion KD, and the protrusion 2Q in the support portion 2P of the base member 2 is inserted into the through hole 11H.

[0137] like Figure 2 as well as Fig. 20 As shown in the figure below, the base member 2 includes a bottom plate portion 2B extending parallel to the XY plane, a bent portion 2F bent upward from the outer ends (left and right ends) of the bottom plate portion 2B, a vertical plate portion 2E extending upward from the upper end of the bent portion 2F, and a support portion 2P provided on the upper portion of the vertical plate portion 2E. Specifically, Figure 2As shown, the first support portion 2P1 is provided at the upper portion of the first upright plate portion 2E1, and the first upright plate portion 2E1 is formed to extend upward from the upper end of the first bent portion 2F1, and the first bent portion 2F1 is formed to be bent upward from the end portion of the right rear side of the bottom plate portion 2B. In addition, the second support portion 2P2 is provided at the upper portion of the second upright plate portion 2E2, and the second upright plate portion 2E2 is formed to extend upward from the upper end of the second bent portion 2F2, and the second bent portion 2F2 is formed to be bent upward from the end portion of the right front side of the bottom plate portion 2B. In addition, the third support portion 2P3 is provided at the upper portion of the third upright plate portion 2E3, and the third upright plate portion 2E3 is formed to extend upward from the upper end of the third bent portion 2F3, and the third bent portion 2F3 is formed to be bent upward from the end portion of the left front side of the bottom plate portion 2B. In addition, the fourth support portion 2P4 is provided on the upper portion of the fourth upright plate portion 2E4, and the fourth upright plate portion 2E4 is formed to extend upward from the upper end of the fourth bent portion 2F4, and the fourth bent portion 2F4 is formed to bend upward from the outer end of the left rear side of the bottom plate portion 2B. Figure 2 In FIG. 1 , for the sake of clarity, dot patterns are respectively indicated on the first to fourth supporting portions 2P1 to 2P4 .

[0138] In addition, if Fig. 20 As shown in the figure below, the reinforcing recess 2R is formed in the bending part 2F, the upright plate part 2E and the support part 2P in a manner spanning these three parts. That is, the reinforcing recess 2R is provided to prevent the bending part 2F, the upright plate part 2E and the support part 2P from bending each other.

[0139] In such Fig.12 As shown in the bottom figure, the cover member 1 is in the stage before being joined to the base member 2. Fig.23 As shown in the figure above, the beam plate portion 1C is bent outward. In this state, the mounting plate portion 11A is supported by the support portion 2P of the base member 2, but is not clamped by the beam plate portion 1C of the cover member 1 and the support portion 2P of the base member 2, so it can move upward. Fig.23 As shown in the figure below, when the beam plate portion 1C is pressed inward, the mounting plate portion 11A is clamped by the beam plate portion 1C of the cover member 1 and the support portion 2P of the base member 2, and the movement in the vertical direction (Z-axis direction) is restricted.

[0140] Fig. 20 The above picture, Fig.21 The left picture and Fig. 22 The left figure shows a state where the mounting plate portion 11A is clamped by the beam plate portion 1C pressed inward in this way and the support portion 2P.

[0141] In addition, in order to avoid interference between the beam plate portion 1C and the convex portion 2Q of the support portion 2P when the beam plate portion 1C is pressed inward, as shown in FIG. Fig.21As shown, a notch portion NRC is formed at the lower edge portion of the root portion NR of the beam plate portion 1C.

[0142] When the beam plate portion 1C is pressed inward, the protruding portion NP (see Fig.19 The rounded corner portion (see the figure below) of the protrusion NP, namely the first corner portion NPR, contacts the upper surface of the mounting plate portion 11A and slides on the upper surface. In addition, the rounded corner portion (the first corner portion NPR) of the protrusion NP has the effect of promoting the movement (sliding) of the protrusion NP to the inside due to its shape. On the other hand, the angular corner portion (the second corner portion NPS) of the protrusion NP has the effect of suppressing the movement (sliding) of the protrusion NP to the outside due to its shape.

[0143] If the first corner portion NPR, which is a rounded corner portion, contacts the upper surface of the mounting plate portion 11A and slides on the upper surface, the upper surface of the mounting plate portion 11A is partially scraped or partially recessed by the first corner portion NPR. This is because, in the example shown in the figure, the mounting plate portion 11A is formed of a material (copper) that is weaker in strength than the material (stainless steel) forming the beam plate portion 1C.

[0144] Specifically, if Fig.21 as well as Fig. 22 As shown in FIG. 1 , the mounting plate portion 11A is configured such that the thickness TH1 in the Z-axis direction is greater than the distance DS2 between the protruding portion NP of the beam plate portion 1C and the protruding support portion 2D of the support portion 2P in the Z-axis direction. Therefore, when the beam plate portion 1C is pressed inward, the upper surface of the mounting plate portion 11A contacts the protruding portion NP of the beam plate portion 1C and is partially scraped or partially recessed.

[0145] Furthermore, in a state where the beam plate portion 1C is pressed inward, the upper surface of the mounting plate portion 11A contacts the protruding portion NP of the beam plate portion 1C at the first contact point PT1, the lower surface thereof contacts one of the two protruding supporting portions 2D in the supporting portion 2P at the second contact point PT2, and the lower surface thereof contacts the other of the two protruding supporting portions 2D in the supporting portion 2P at the third contact point PT3. That is, the mounting plate portion 11A is supported at three points by the beam plate portion 1C of the cover member 1 and the supporting portion 2P of the base member 2. In addition, in the above description, the first contact point PT1 to the third contact point PT3, which are terms related to point contact, are used for ease of understanding, but the contact between the mounting plate portion 11A and each of the cover member 1 and the base member 2 is actually surface contact.

[0146] In the example shown in the figure, when the beam plate portion 1C is pressed inward, Fig. 22As shown in the left figure, the outer surface of the root NR of the beam plate portion 1C, the outer surface of the third side plate portion 1A3, and the outer surface of the front end portion KD of the mounting plate portion 11A are in the same plane. That is, the beam plate portion 1C does not protrude beyond the outer surface of the outer peripheral wall portion 1A (third side plate portion 1A3), nor does it protrude beyond the outer surface of the front end portion KD of the mounting plate portion 11A. Therefore, compared with a configuration in which the bracket 11 and the housing HS are joined using welding or an adhesive, the size management of the vibration generating device 101 does not become difficult.

[0147] In this way, the flat plate portion KS, which is a part of the mounting plate portion 11A, is plastically deformed by contact with the beam plate portion 1C, that is, the bracket 11 and the housing HS are joined to each other by riveting a part of the mounting plate portion 11A. In addition, riveting is a method of joining two parts by plastically deforming a part of a part. In other words, the bracket 11 is deformed by pressing the beam plate portion 1C, which is a part of the cover member 1, inwardly, that is, by riveting a part of the cover member 1, so that it is clamped between the cover member 1 (beam plate portion 1C) and the base member 2 (support portion 2P) and fixed.

[0148] As described above, the vibration generating device 101 according to one embodiment of the present disclosure is Figure 1 to Figure 3 As shown, the vibration generating device 101 includes a housing HS, a movable body (vibrating body VB) housed in the housing HS, a supporting member (elastic supporting member ES) supporting the movable body (vibrating body VB) so as to be able to vibrate in a first direction (X-axis direction), a coil 12 having a main harness portion MW extending in a second direction (Y-axis direction) perpendicular to the first direction (X-axis direction), and a magnetic flux generating member (magnet 15) generating a magnetic flux passing through the main harness portion MW in a third direction (Z-axis direction) perpendicular to the first direction (X-axis direction) and the second direction (Y-axis direction). Furthermore, the vibration generating device 101 is configured such that the coil 12 is fixed relative to the housing HS, and the magnetic flux generating member (magnet 15) is fixed relative to the movable body (vibrating body VB). In addition, the vibration generating device 101 has a conductive component (bracket 11), which is fixed relative to the coil 12 and extends along a first direction (X-axis direction) in a manner transverse to the magnetic flux, and generates eddy current when the movable body (vibrating body VB) moves along the first direction (X-axis direction) to reduce the acceleration (vibration acceleration) of the movable body (vibrating body VB).

[0149] In this structure, the magnetic generating component (magnet 15) and the conductive component (bracket 11) can generate a braking force (force to suppress vibration) in the same manner as the gel-like vibration-damping component that generates viscous resistance. In addition, this structure can suppress the resonance of the vibrating body VB by its braking force. In addition, in this structure, the braking force is generated by eddy current. Therefore, this structure that does not include a deformation part or a sliding part such as a gel-like vibration-damping component brings the following effect: the durability of the vibration generating device 101 can be improved.

[0150] In addition, in a general vibration generating device, the braking force generated by the eddy current may also become an undesirable force that reduces the vibration acceleration, but the vibration generating device 101 of one embodiment of the present disclosure is configured to suppress the resonance of the vibrating body VB by actively utilizing the braking force generated by the eddy current.

[0151] The conductive component (bracket 11) may also be formed of non-magnetic metal. This configuration has the following effects: it can prevent the magnetic force (attractive force) from acting between the conductive component and the magnet 15 as in the case where the conductive component (bracket 11) is formed of magnetic metal, and can suppress the efficient use of the driving force of the drive unit DM that is hindered by such attractive force.

[0152] In addition, the conductive component (bracket 11) can also be formed of a material with a greater conductivity than iron and iron alloy. This structure has the effect of increasing the braking force (vibration suppression force) generated by the eddy current. This is because the greater the conductivity, the greater the braking force generated by the eddy current. Therefore, this structure brings about the following effects, for example: it is possible to suppress the resonance of a heavier vibrating body VB.

[0153] In addition, the conductive member (bracket 11) may be preferably formed of copper, aluminum, or an alloy thereof. This configuration brings about an effect of reducing material cost compared to a case where the conductive member is formed of a noble metal such as silver or an alloy thereof.

[0154] In addition, the conductive component (bracket 11) can also be arranged between the magnetic flux generating component (magnet 15) and the coil 12. Compared with the case where the coil 12 is arranged between the conductive component (bracket 11) and the magnetic flux generating component (magnet 15), this configuration can arrange the conductive component (bracket 11) at a position close to the magnetic flux generating component (magnet 15), thereby bringing about the effect of increasing the braking force (force to suppress vibration). This is because the closer the conductive component (bracket 11) is to the magnetic flux generating component (magnet 15), the higher the magnetic flux density passing through the conductive component (bracket 11), and the higher the magnetic flux density passing through the conductive component (bracket 11), the greater the braking force.

[0155] In addition, the vibration generating device 101 may also have a magnetic flux attracting component that attracts magnetic flux at a position away from the magnetic flux generating component (magnet 15) along the third direction (Z-axis direction). In this case, the conductive component (bracket 11) may also be arranged between the magnetic flux generating component (magnet 15) and the magnetic flux attracting component. In the illustrated example, the magnet 15 functions as a magnetic flux generating component and a magnetic flux attracting component, and the yoke 10 functions as a magnetic flux attracting component. Specifically, when the upper magnet 15U functions as a magnetic flux generating component, the lower yoke 10D and the lower magnet 15D function as magnetic flux attracting components. In addition, when the lower magnet 15D functions as a magnetic flux generating component, the upper yoke 10U and the upper magnet 15U function as magnetic flux attracting components. In addition, one of the upper magnet 15U and the lower magnet 15D may be omitted. Moreover, when the upper magnet 15U is omitted, the lower magnet 15D functions as a magnetic flux generating component, and the upper yoke 10U functions as a magnetic flux attracting component. The same applies to the case where the lower magnet 15D is omitted. This configuration has the effect of increasing the braking force (force to suppress vibration) compared to the case where the magnetic flux angle is an angle other than a right angle, because the angle (hereinafter referred to as "magnetic flux angle") formed between the extension direction (X-axis direction or Y-axis direction) of the conductive component (bracket 11) and the direction (Z-axis direction) of the magnetic flux from the magnetic flux generating component (magnet 15) toward the magnetic flux attracting component is approximately a right angle. This is because, if the magnetic flux density is the same, the closer the magnetic flux angle is to a right angle, the greater the braking force.

[0156] For example, the magnetic flux generating component may be the upper magnet 15U as the first permanent magnet, and the magnetic flux attracting component may be the lower magnet 15D as the second permanent magnet. In this case, the first permanent magnet (upper magnet 15U) and the second permanent magnet (lower magnet 15D) may also be as shown in FIG. Figure 7 As shown in the figure, the surfaces facing each other are arranged to have mutually different polarities. This configuration can make the magnetic flux angle closer to a right angle, thereby bringing about an effect of further increasing the braking force (force for suppressing vibration).

[0157] In addition, if Figure 4As shown, the vibration generating device 101 may also include the following bracket 11, which has: a main plate portion 11B extending along planes parallel to the first direction (X-axis direction) and the second direction (Y-axis direction) and for mounting the coil 12; and a mounting plate portion 11A extending from the main plate portion 11B and fixed to the housing HS. In this case, the coil 12 may also be fixed to the housing HS (base component 2) via the bracket 11, and the magnetic flux generating component (magnet 15) may also be fixed to the movable body (vibrating body VB). Moreover, the main plate portion 11B may also be formed of copper, aluminum, or an alloy thereof, and configured to function as a conductive component. This configuration brings about the effect of reducing the number of components compared to the case where a component different from the bracket 11 (main plate portion 11B) is made to function as a conductive component.

[0158] In addition, the conductive member (bracket 11) may be configured to be arranged along the locus TR (refer to Figure 4 The position corresponding to the position of the conductive member (the upper figure) does not have an opening. That is, the conductive member (bracket 11) can also be configured so that when the movable body (vibrating body VB) vibrates, at least the central region CR always intersects with the magnetic flux. Compared with the case of having an opening intersecting with the track TR, this configuration brings about the effect of eddy current facilitating the flow.

[0159] In addition, the coil 12 may also include: the innermost part of the coil winding portion, that is, the hollow core portion AC, and the conductor portion CP extending outward from the hollow core portion AC. Furthermore, the conductive component (bracket 11) may also have an opening for preventing interference with the conductor portion CP when the coil 12 is installed (see Figure 4 In this case, the opening (first opening H1) may be formed at a position avoiding the track TR. That is, the opening (first opening H1) may be formed at a position avoiding the central region CR. This configuration brings about the following effects: interference between the conductor portion CP and the conductive component (bracket 11) is prevented, and eddy current is easier to flow than in the case of having an opening (first opening H1) intersecting the track TR.

[0160] like Figure 4 As shown in the following figure, the hollow core portion AC may also be formed into a long hole extending along the second direction (Y-axis direction). Figure 4 As shown in the above figure, the conductor portion CP may also be configured to extend outward from the end portion of the hollow core portion AC in the second direction (Y-axis direction). Figure 4In the example shown in the above figure, the first conductor portion CP1 is configured to extend from the left end portion (the end portion on the Y1 side) of the hollow core portion AC toward the front (X1 direction). This configuration brings about the following effect: compared with the case where the first conductor portion CP1 is configured to extend outward from a portion other than the end portion (e.g., the central portion) of the hollow core portion AC, an opening (first opening H1) can be formed at a position away from the track TR. The same is true for the second conductor portion CP2 and the third conductor portion CP3.

[0161] In addition, if Figure 1 to Figure 3 As shown, a vibration generating device 101 according to an embodiment of the present disclosure comprises: a housing HS; a movable body (vibrating body VB) housed in the housing HS; a supporting member (elastic supporting member ES, leaf spring 17) supporting the movable body (vibrating body VB) so as to be able to vibrate along a first direction (X-axis direction, front-back direction); a bracket 11 having a main plate portion 11B and a reinforcing portion RF (see Fig.14 ), the main plate portion 11B extends in a second direction (Y-axis direction, left-right direction) perpendicular to the first direction (X-axis direction), and the reinforcing portion RF includes a first bending portion FD1 (refer to Fig.14 ) A first reinforcing plate portion RP1 (see Fig.14 ), the bracket 11 is mounted on the housing HS (base member 2) via the mounting plate portion 11A; the coil 12 has a main harness portion MW (refer to Figure 4 ) and a secondary harness section SW connecting two adjacent main harness sections MW (refer to Figure 4 ), the coil 12 is mounted on one side (Z2 side, lower side) of the main plate portion 11B in the third direction (Z-axis direction); and the permanent magnet (magnet 15) is mounted on the movable body (yoke 10) on the other side (Z1 side, upper side) of the coil 12 in the third direction (Z-axis direction), generating a magnetic flux toward the main harness portion MW. Moreover, as Fig.14 As shown, one end (left end LE1) of the permanent magnet (magnet 15) in the second direction (Y-axis direction) is located at a distance DS1 (also refer to the inner side (Y2 side) of one end (left end LE2) of the secondary harness portion SW in the second direction (Y-axis direction). Figure 7In addition, the position where the left end LE1 is located on the inner side (Y2 side) than the left end LE2 means that the left end LE1 is located closer to the center point of the vibrating body VB than the left end LE2. In addition, the first reinforcing plate portion RP1 extends from a position (point PS1) that is inner (Y2 side) than one end (left end LE2) of the secondary wiring harness portion SW in the second direction (Y-axis direction) and outer (left end LE1) than one end (magnet 15) of the permanent magnet (magnet 15) in the second direction (Y-axis direction) toward the other side (Z1 side, upper side) in the third direction (Z-axis direction). In addition, the position that is outer than the left end LE1 refers to a position that is farther from the center point of the vibrating body VB than the left end LE1. In addition, in the example shown in the figure, point PS1 is equivalent to the inner and lower end of the first reinforcing plate portion RP1.

[0162] This configuration is due to the fact that at least a portion of the reinforcing portion RF is provided in the space SP (see Fig.14 ), which brings the following effect: it is easier to achieve miniaturization than a structure in which the reinforcement part is arranged outside the coil. Fig.14 In the example shown, the space SP corresponds to the portion of the space above the coil 12 (a space having the same cross-section as that of the coil 12 in the XY plane) that is not occupied by the upper magnet 15U. Specifically, the space SP corresponds to the portion of the space above the secondary wiring harness portion SW of the coil 12 that is not occupied by the upper magnet 15U. No permanent magnet is arranged in the space SP. This is because, even if a permanent magnet is arranged, the permanent magnet cannot effectively generate a driving force suitable for driving the vibrating body VB. Therefore, the space SP is suitable as a place to be used as a place to arrange at least a part of the reinforcement portion RF without reducing the driving force of the drive unit DM.

[0163] In addition, if Fig.14 As shown, the reinforcing portion RF may also include a second reinforcing plate portion RP2 extending from the other end (Z1 end, upper end) of the first reinforcing plate portion RP1 in the third direction (Z-axis direction) via the second bent portion FD2 toward the outer side (Y1 side, left side) in the second direction (Y-axis direction). That is, the reinforcing portion RF may also be a structure formed by so-called Z bending.

[0164] This structure and Fig.15 Compared with the reinforcement portion RF including the portion not including the second reinforcement plate portion RP2 shown in the following figure, the strength of the bracket 11 can be further improved.

[0165] In addition, the mounting plate portion 11A may also be Fig.14 As shown in the figure, it is extended from the outer end (left end LE3) of the second reinforcing plate portion RP2 toward the outside (Y1 direction).

[0166] This composition and Fig.15Compared with the configuration in which the mounting plate portion 11A shown in the following figure is extended from the main body plate portion 11B, the deformation of the main body plate portion 11B can be more reliably suppressed.

[0167] In addition, if Fig.13 As shown, the bracket 11 may also be formed by a metal plate having material particles such as roller marks RM. In this case, the reinforcing portion RF may also be constituted to include a first bending portion FD1, and the first bending portion FD1 is formed in a manner that a bending line FL extends in a direction (X-axis direction) intersecting the direction (Y-axis direction) of the material particles (roller marks RM). That is, the reinforcing portion RF may also be constituted so that the first bending portion is not formed in a manner that a bending line extends in a direction (Y-axis direction) parallel to the direction (Y-axis direction) of the material particles (roller marks RM). In addition, the bending line FL is a line formed by bending the metal plate in order to form the first bending portion FD1.

[0168] This configuration brings about an effect that the bracket 11 can more easily bear loads from various directions.

[0169] In addition, the bracket 11 may be formed of a metal (e.g., copper, aluminum, silver, or an alloy thereof) having a lower strength than the material (e.g., austenitic stainless steel) constituting the housing HS. In this case, the bracket 11 may be configured to generate eddy currents to reduce the acceleration of the movable body (vibrating body VB) in a manner that offsets the change in magnetic flux when the permanent magnet (magnet 15) mounted on the movable body (yoke 10) moves in the first direction (X-axis direction).

[0170] This configuration brings about an effect of enabling the bracket 11 to be formed of a material that easily generates an eddy current.

[0171] In addition, in the vibration generating device 101 of one embodiment of the present disclosure, as Figure 2 As shown, the housing HS includes a bottom plate portion 2B, side plates (a first side plate portion 1A1 and a third side plate portion 1A3) perpendicular to the bottom plate portion 2B, and a support portion 2P supporting the mounting plate portion 11A of the bracket 11. Furthermore, the side plates (the first side plate portion 1A1 and the third side plate portion 1A3) include a beam plate portion 1C disposed opposite to the support portion 2P in the plate thickness direction (a direction parallel to the Z-axis direction and a direction perpendicular to the XY plane) of the main body plate portion 11B of the bracket 11, and the mounting plate portion 11A is arranged in a manner that the plate thickness direction (a direction perpendicular to the Z-axis direction and a direction parallel to the XY plane) of the beam plate portion 1C, which is a part of the side plates (the first side plate portion 1A1 and the third side plate portion 1A3), and the plate thickness direction of the main body plate portion 11B of the bracket 11 intersect (perpendicularly), and is sandwiched between the support portion 2P and the beam plate portion 1C. In the example shown in the figure, the mounting plate portion 11A is arranged so that the plate thickness direction of the beam plate portion 1C and the plate thickness directions of the mounting plate portion 11A and the main body plate portion 11B of the bracket 11 are perpendicular to each other.

[0172] With this configuration, in the vibration generating device 101, the bracket 11 functioning as the coil bracket is firmly fixed to the housing HS without welding. Therefore, in the vibration generating device 101, the housing HS and the bracket 11 are firmly joined even when they are formed of different metals. In addition, in the example shown in the figure, the bracket 11 and the housing HS are joined by Fig.23 The beam plate portion 1C of the cover member 1 bent outward as shown in the above figure is as follows Fig.23 As shown in the following figure, the bracket 11 is pressed inwardly. Therefore, the joining of the bracket 11 and the housing HS is easier to achieve than when welding is used, or can be achieved in a space-saving manner compared to when an adhesive is used. This is because, when an adhesive is used, an adhesive reservoir needs to be provided in the vibration generating device 101. In addition, in the above-mentioned embodiment, the beam plate portion 1C is a part of the cover member 1, but it may also be a part of the base member 2.

[0173] In addition, in this structure, the clamping of the bracket 11 by the shell HS utilizes the elastic force in the plate surface direction (direction parallel to the Z-axis direction, direction perpendicular to the XY plane) that intersects with the plate thickness direction (direction perpendicular to the Z-axis direction, direction parallel to the XY plane) of the beam plate portion 1C, thereby forming a stable structure compared to the case of utilizing the elastic force in the plate thickness direction of the plate part.

[0174] In addition, in this configuration, the direction in which the beam plate portion 1C is bent (inward along the Y-axis direction) is different from the direction in which the beam plate portion 1C presses the mounting plate portion 11A (downward along the Z-axis direction). Therefore, this configuration brings about the effect that the mounting plate portion 11A can be pressed with a relatively large force by the beam plate portion 1C that is bent with a relatively small force.

[0175] In addition, the bracket 11 may be formed of a metal material having a lower melting point than the metal material forming the housing HS. This is because it is difficult to achieve welding-based joining when the melting points of the two metal materials to be joined are different from each other. However, in the above-mentioned configuration, the housing HS and the bracket 11 are joined without welding.

[0176] In addition, the bracket 11 may be formed of a metal material having a strength lower than that of the metal material forming the housing HS. This is because, if the strengths of the two metal materials joined to each other are different, the joint based on welding may be easily broken, but in the above-mentioned structure, the housing HS and the bracket 11 are joined without welding.

[0177] Furthermore, bracket 11 may be configured to reduce the acceleration of the movable body (vibrating body VB) by generating eddy current using magnetic flux generated by the permanent magnet (magnet 15 ) when the movable body (vibrating body VB) vibrates.

[0178] This configuration brings about an effect of being able to utilize a braking force (force for suppressing vibration) based on eddy currents. Therefore, this configuration brings about an effect of being able to suppress resonance of the vibrating body VB, for example.

[0179] In addition, the housing HS is Figure 2 As shown, the housing HS may also include a base member 2. That is, the housing HS may also be composed of two members (the cover member 1 and the base member 2). In this case, the base member 2 may also include a bottom plate portion 2B, a vertical plate portion 2E extending upward from the bottom plate portion 2B via a bent portion 2F, and a support portion 2P provided on the upper portion of the vertical plate portion 2E.

[0180] This structure brings about the effect of facilitating the assembly of the vibration generating device 101. Fig.11 as well as Fig.12 The components are assembled in the order shown, and finally the cover component 1 is joined to the base component 2, thereby assembling the vibration generating device 101.

[0181] In addition, one of the plurality of mounting plate portions 11A (first mounting plate portion 11A1 to fourth mounting plate portion 11A4) in the bracket 11 may be supported at three points by one of the plurality of beam plate portions 1C (first beam plate portion 1C1 to fourth beam plate portion 1C4) and one of the plurality of support portions 2P (first support portion 2P1 to fourth support portion 2P4). Fig.21 as well as Fig. 22 As shown, the fourth beam plate portion 1C4 and the fourth support portion 2P4 are supported at three points (a first contact point PT1 to a third contact point PT3).

[0182] This configuration has the effect of suppressing the shaking of the bracket 11 relative to the housing HS when the bracket 11 is clamped by the housing HS. This is because the housing HS supports the bracket 11 at three points respectively, that is, at a total of 12 points, namely, 4 points on the upper surface side and 8 points on the lower surface side, so that the bracket 11 can be firmly clamped.

[0183] Specifically, the beam plate portion 1C is as follows Fig.21 as well as Fig. 22As shown, the support portion 2P may include an upper contact portion (protrusion NP) that protrudes toward the mounting plate portion 11A in a direction perpendicular to the mounting plate portion 11A (Z-axis direction) and contacts the upper surface of the mounting plate portion 11A. In addition, the support portion 2P may include a lower contact portion (protruding support portion 2D) that protrudes toward the mounting plate portion 11A in a direction perpendicular to the mounting plate portion 11A (Z-axis direction) and contacts the lower surface of the mounting plate portion 11A. In this case, the distance DS2 between the upper contact portion (protrusion NP) and the lower contact portion (protruding support portion 2D) in the direction perpendicular to the mounting plate portion 11A (Z-axis direction) may be smaller than the plate thickness TH1 of the mounting plate portion 11A.

[0184] With this configuration, the mounting plate portion 11A can withstand the downward force generated by the beam plate portion 1C bent inward. The greater the difference between the plate thickness TH1 and the distance DS2 (plate thickness TH1 - distance DS2), the greater the force. That is, this configuration brings about the effect of easily adjusting the magnitude of the downward force applied by the beam plate portion 1C to the mounting plate portion 11A by adjusting the difference between the plate thickness TH1 and the distance DS2.

[0185] In addition, the support portion 2P is Fig.21 As shown, a projection 2Q may be provided which projects toward the mounting plate portion 11A in a direction (Z-axis direction) perpendicular to the flat plate portion KS of the mounting plate portion 11A and is inserted into a through hole 11H formed in the mounting plate portion 11A.

[0186] This configuration has an effect of preventing the bracket 11 supported by the base member 2 from moving along the XY plane before the beam plate portion 1C is bent inward, that is, before the bracket 11 is sandwiched between the cover member 1 and the base member 2 .

[0187] In addition, if Fig. 20 As shown in the following figure, a reinforcing recess 2R may be formed in the upright plate portion 2E. The reinforcing recess 2R has an effect of preventing the bent portion 2F, the upright plate portion 2E, and the support portion 2P from being bent relative to each other.

[0188] In addition, if Fig.19 As shown, the beam plate portion 1C can also be formed into a cantilever beam shape. According to this structure, Fig.23 The beam plate portion 1C in the state of being bent outward as shown in the above figure can become Fig.23 However, the beam plate portion 1C may also be formed in a double-support beam shape.

[0189] In addition, the manufacturing method of the vibration generating device 101 according to one embodiment of the present disclosure includes the following steps: Fig.23The bracket 11 is accommodated in the housing HS when the beam plate portion 1C is bent toward the outside of the third side plate portion 1A3 as shown in the above figure; and Fig.23 As shown in the figure below, the beam plate portion 1C is pressed toward the inner side of the third side plate portion 1A3 so that the beam plate portion 1C contacts the upper surface of the mounting plate portion 11A.

[0190] In the vibration generating device 101 produced by the manufacturing method, the bracket 11 that functions as a coil bracket is firmly fixed to the housing HS without using welding. Therefore, in the vibration generating device 101 produced by the manufacturing method, the housing HS and the bracket 11 are firmly joined even when they are formed of different metals. In addition, in the vibration generating device 101 produced by the manufacturing method, the joining of the bracket 11 and the housing HS is easier to achieve than when welding is used, or is achieved in a more space-saving manner than when an adhesive is used. This is because, when an adhesive is used, an adhesive storage portion needs to be provided in the vibration generating device 101.

[0191] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the above embodiments. The above embodiments can be applied in various modifications or substitutions 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.

[0192] For example, in the above-mentioned embodiment, the vibration generating device 101 is configured to include a magnet 15 magnetized with 8 poles and a coil 12 having three coil winding parts (six wire harness parts), but it can also be configured to include a magnet 15 magnetized with a number of poles other than 8 poles such as 2 poles, 4 poles, 6 poles, 10 poles, or 12 poles and a coil 12 having a corresponding number of wire harness parts. That is, the coil 12 can also be configured to have one, two, or four or more coil winding parts.

[0193] In addition, in the above-mentioned embodiment, the bracket 11 has the right reinforcing portion RFR and the left reinforcing portion RFL, but one of the right reinforcing portion RFR and the left reinforcing portion RFL may be omitted. Alternatively, the bracket 11 may have a front reinforcing portion formed at the front end of the main body plate portion 11B, and may have a rear reinforcing portion formed at the rear end of the main body plate portion 11B. In this case, at least one of the right reinforcing portion RFR, the left reinforcing portion RFL, the front reinforcing portion, and the rear reinforcing portion may be omitted.

[0194] In addition, in the above-mentioned embodiment, the left side reinforcement portion RFL is formed to extend substantially over the entire length of the left side edge of the main body plate portion 11B in the X-axis direction, but may be formed to extend along a portion of the left side edge of the main body plate portion 11B. In addition, the left side reinforcement portion RFL may be formed to extend along a plurality of portions of the left side edge of the main body plate portion 11B. The same is true for the right side reinforcement portion RFR, the front side reinforcement portion, and the rear side reinforcement portion.

[0195] Description of Reference Numerals

[0196]

Claims

1. A vibration generating device, characterized in that: have: case; a movable body received in the housing; a supporting member that supports the movable body so as to be able to vibrate; The bracket comprises a main body plate portion and a mounting plate portion extending from the main body plate portion, and is mounted on the housing via the mounting plate portion; A coil mounted on the main body plate; as well as A permanent magnet is mounted on the movable body to generate a magnetic flux toward the coil. The housing includes a bottom plate, a side plate perpendicular to the bottom plate, and a support portion for supporting the mounting plate portion of the bracket. The side plate portion includes a beam plate portion provided opposite to the support portion in the plate thickness direction of the main plate portion of the bracket, The mounting plate portion is arranged so that the plate thickness direction of the beam plate portion as a part of the side plate portion and the plate thickness direction of the main body plate portion of the bracket intersect each other, and is sandwiched between the support portion and the beam plate portion.

2. The vibration generating device according to claim 1, characterized in that: The bracket is formed of a metal material having a melting point lower than a melting point of a metal material forming the housing.

3. The vibration generating device according to claim 2, characterized in that: The bracket is formed of a metal material having a strength lower than that of a metal material forming the housing.

4. The vibration generating device according to claim 1, characterized in that: The bracket generates eddy current using the magnetic flux generated by the permanent magnet when the movable body vibrates, thereby reducing acceleration of the movable body.

5. The vibration generating device according to claim 1, characterized in that: The housing includes a base member, The base member includes the bottom plate portion, a standing plate portion extending upward from the bottom plate portion via a bent portion, and the support portion provided on an upper portion of the standing plate portion.

6. The vibration generating device according to claim 1, characterized in that: One of the plurality of mounting plate portions in the bracket is supported at three points by one of the plurality of beam plate portions and one of the plurality of support portions.

7. The vibration generating device according to claim 1, characterized in that: The beam plate portion includes an upper contact portion that protrudes toward the mounting plate portion in a direction perpendicular to the mounting plate portion and contacts an upper surface of the mounting plate portion. The support portion includes a lower contact portion that protrudes toward the mounting plate portion in a direction perpendicular to the mounting plate portion and contacts the lower surface of the mounting plate portion. A distance between the upper contact portion and the lower contact portion in a direction perpendicular to the mounting plate portion is smaller than a plate thickness of the mounting plate portion.

8. The vibration generating device according to claim 1, characterized in that: The support portion includes a convex portion that protrudes toward the mounting plate portion in a direction perpendicular to the mounting plate portion and is inserted into a through hole formed in the mounting plate portion.

9. The vibration generating device according to claim 5, characterized in that: A reinforcing recess is formed in the upright plate portion.

10. The vibration generating device according to claim 1, characterized in that: The beam plate portion is formed in a cantilever beam shape.

11. A method for manufacturing a vibration generating device, characterized in that: The vibration generating device comprises: a housing; a movable body accommodated in the housing; a supporting member supporting the movable body so as to be able to vibrate; a bracket having a main body plate portion and a mounting plate portion extending from the main body plate portion, and mounted to the housing via the mounting plate portion; A coil mounted on the main body plate; and a permanent magnet mounted on the movable body to generate a magnetic flux toward the coil, the housing having a bottom plate portion, a side plate portion perpendicular to the bottom plate portion, and a support portion supporting the mounting plate portion of the bracket, the side plate portion including a beam plate portion disposed opposite to the support portion, the mounting plate portion being arranged so that a plate thickness direction of the beam plate portion as a part of the side plate portion and a plate thickness direction of the mounting plate portion intersect each other, and being clamped by the support portion and the beam plate portion, The manufacturing method of the vibration generating device comprises the following steps: The bracket is accommodated in the housing in a state where the beam plate portion is bent toward the outside of the side plate portion; and The beam plate portion is pressed toward the inner side of the side plate portion so that the beam plate portion contacts the upper surface of the mounting plate portion.

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