Vibration motors and haptic devices

Abstract

To provide a vibration motor capable of efficiently achieving a configuration in which, working properties for connecting the coil and a substrate, is improved.SOLUTION: A vibration motor comprises: a stationary part; and a movable part which can vibrate to the stationary part in a center axis direction. The stationary part comprises: a coil for applying drive force to the movable part by energization; and a housing 3 for storing, the movable part and the coil. The housing has a notch 33 which becomes hollow inward, from an outer edge of the housing, in the center axis direction. The notch has: a first notch 331 which becomes hollow inward from the outer edge of the housing, in the center axis direction; and a second notch 332 which becomes hollow inward from the outer edge of the first notch in the center axis direction. A drawing line of the coil is drawn to outside of the housing through the notch.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a vibration motor.

Background Art

[0002] Conventionally, various devices such as mobile devices like smartphones are equipped with a vibration motor as a vibration generating device. The vibration motor is used, for example, for functions such as notifying a user of an incoming call or an alarm, or for the function of tactile feedback in a human interface.

[0003] Generally, a vibration motor has a stator, an elastic member, and a vibrator. The stator has a housing and a coil. The vibrator has a magnet. The vibrator and the housing are connected by an elastic member. By energizing the coil to generate a magnetic field, the vibrator vibrates (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the vibration motor of Patent Document 1 and the like, the connection between the circuit board and the coil is made inside the housing, and there are problems with the connection workability.

[0006] In view of the above situation, an object of the present disclosure is to provide a vibration motor that can effectively realize a configuration for improving the workability of connecting a coil and a substrate.

Means for Solving the Problems

[0007] An exemplary vibration motor of the present disclosure comprises a stationary part and a movable part that can vibrate in the axial direction relative to the stationary part. The stationary part comprises a coil that provides a driving force to the movable part by energization and a housing that houses the movable part and the coil. The housing has a notch that recesses inward from the outer edge of the housing in the axial direction. The notch comprises a first notch that recesses inward from the outer edge of the housing in the axial direction and a second notch that recesses inward from the outer edge of the first notch in the axial direction. Lead wires of the coil are led out of the housing through the notch. [Effects of the Invention]

[0008] The exemplary vibration motor of this disclosure effectively realizes a configuration that improves the workability of connecting the coil and the substrate. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view showing the external appearance of a vibration motor according to an exemplary embodiment of the present disclosure. [Figure 2] Figure 2 is a cross-sectional perspective view of a vibration motor. [Figure 3] Figure 3 is a perspective view of a part of the vibration motor's configuration, seen from the first region. [Figure 4] Figure 4 is a plan view showing a partial configuration of a vibration motor. [Figure 5] Figure 5 is a perspective view showing the configuration of the core and holder in the movable part. [Figure 6] Figure 6 is an exploded perspective view showing the core and holder separated. [Figure 7] Figure 7 is a perspective view of the holder. [Figure 8] Figure 8 is a perspective view showing the configuration of a holder related to a comparative example. [Figure 9] Figure 9 is a perspective view showing the intermediate stages of the manufacturing process for a vibration motor. [Figure 10] Figure 10 is a perspective view of the housing as seen through the hole in the jig. [Figure 11] FIG. 11 is a diagram showing an example of a tactile device.

Embodiments for Carrying Out the Invention

[0010] Exemplary embodiments of the present disclosure will be described below with reference to the drawings.

[0011] In the drawings, the central axis direction, which is the direction in which the central axis J of the vibration motor 10 extends, is defined as the Z direction, with one side in the central axis direction being Z1 and the other side being Z2. Also, the first direction, which is perpendicular to the central axis direction, is defined as the X direction, with one side in the first direction being X1 and the other side being X2. Further, the second direction, which is perpendicular to the central axis direction and the first direction, is defined as the Y direction.

[0012] <1. Overall Structure of the Vibration Motor> FIG. 1 is a perspective view showing the appearance of a vibration motor 10 according to an exemplary embodiment of the present disclosure. FIG. 2 is a cross-sectional perspective view of the vibration motor 10.

[0013] The vibration motor 10 includes a stationary part 1, a movable part 5, and elastic members 81 and 82. The movable part 5 is vibratable in the central axis direction (Z direction) with respect to the stationary part 1.

[0014] The stationary part 1 includes a coil 2, a housing 3, and lid parts 41 and 42. The housing 3 is a plate-like member formed to extend in the circumferential direction around the central axis J. The housing 3 is cylindrical and extends in the central axis direction. The housing 3 is made of a magnetic material. The magnetic material is, for example, stainless steel.

[0015] The coil 2 is formed by winding a conducting wire around the central axis J and is fixed to the inner surface of the housing 3. That is, the housing 3 houses the coil 2 inside. The coil 2 generates a magnetic field when energized. The coil 2 is disposed at the central portion in the central axis direction of the housing 3.

[0016] The movable part 5 has a core part 6 and holders 71, 72, and is housed inside the housing 3. That is, the stationary part 1 has a housing 3 that houses the movable part 5 and the coil 2.

[0017] The core part 6 has a magnet 6A on one side in the central axis direction and a magnet 6B on the other side in the central axis direction. The core part 6 further has a magnetic body part 6C. The magnetic body part 6C is arranged to be sandwiched in the central axis direction by the magnets 6A, 6B.

[0018] For example, the other side in the central axis direction of the magnet 6A is the N pole, and the one side in the central axis direction is the S pole. The one side in the central axis direction of the magnet 6B is the N pole, and the other side in the central axis direction is the S pole. In this way, the N poles face each other in the central axis direction with the magnetic body part 6C sandwiched therebetween. That is, the magnetic poles on the side of the magnets 6A, 6B facing the magnetic body part 6C are the same poles. Thereby, the magnetic flux flows from the S pole to the N pole through the magnets 6A, 6B, flows radially outward through the magnetic body part 6C, and penetrates the coil 2 in the radial direction. Note that the radial direction is the radial direction with respect to the central axis J. By forming the housing 3 of a magnetic material, the magnetic flux passing through the coil 2 flows through the housing 3 in the central axis direction and returns to the S poles of the magnets 6A, 6B. With such a configuration, the amount of magnetic flux passing through the coil 2 can be increased.

[0019] In the magnet, the N pole and the S pole may be reversed. In this case, the flow of the magnetic flux is in the opposite direction to the above.

[0020] The holder 71 holds one end portion of the magnet 6A in the central axis direction. The holder 72 holds the other end portion of the magnet 6B in the central axis direction. The holders 71, 72 function as weights and are made of, for example, a tungsten alloy.

[0021] The elastic members 81, 82 are compression springs that can expand and contract in the central axis direction. The other end portion of the elastic member 81 in the central axis direction is fixed to the one end face of the holder 71 in the central axis direction. The one end portion of the elastic member 81 in the central axis direction is fixed to the one end face of the housing 3 in the central axis direction.

[0022] One end of the elastic member 82 in the axial direction is fixed to the other end face of the holder 72 in the axial direction. The other end of the elastic member 82 in the axial direction is fixed to the other end face of the housing 3 in the axial direction.

[0023] The lid portions 41 and 42 are plate-shaped members with their thickness oriented along the central axis direction. The lid portion 41 is positioned on one side of the elastic member 81 along the central axis direction and is fixed to the end of the elastic member 81 on that side along the central axis direction. The lid portion 42 is positioned on the other side of the elastic member 82 along the central axis direction and is fixed to the end of the elastic member 82 on the other side along the central axis direction.

[0024] In the non-operating state when coil 2 is not energized, the movable part 5 is in a stationary state due to the elastic force applied to it by the elastic member 81, which is compressed from its natural length, in the other direction along the central axis, and by the elastic member 82, which is compressed from its natural length, in the one direction along the central axis. In the non-operating state, the magnetic part 6C of the movable part 5 is located at the center position along the central axis of coil 2 (Figure 2). The core part 6 is positioned radially inward of coil 2.

[0025] When current is applied to coil 2, the interaction between the magnetic field generated by coil 2 and the magnetic field generated by core 6 imparts a driving force to core 6. In other words, the stationary part 1 has coil 2 that imparts a driving force to the movable part 5 when current is applied. As a result of the driving force being applied to the movable part 5, the movable part 5 vibrates in the direction of its central axis.

[0026] In this way, the vibration motor 10 does not use a shaft to guide the movable part as in conventional designs, thus reducing the weight of the movable part 5 and the volume of the core part 6. Therefore, the vibration amount of the vibration motor 10 can be ensured. In addition, sliding between the movable part and the shaft is eliminated, thus avoiding noise and wear caused by sliding.

[0027] <2. Housing and FPC Configuration> Figure 3 is a perspective view of a part of the vibration motor 10 as seen from the first region 34 side. As shown in Figure 3, the housing 3 has a continuous portion 31 formed continuously in the circumferential direction, and a protruding portion 32 that protrudes to the circumferential side from one circumferential end 31A of the continuous portion 31. The protruding portion 32 has a gap S between it and the other circumferential end 31B of the continuous portion 31.

[0028] The protruding portion 32 is located in the center of the housing 3 in the central axis direction. The first notch portion 331 is formed by being surrounded by the other circumferential end portion 31B, the one circumferential end portion 31A, and the protruding portion 32. The second notch portion 332 is formed by recessing from the one circumferential end portion of the protruding portion 32 toward the other circumferential side in the central axis direction. That is, the first notch portion 331 is formed by the other circumferential end portion 31B, the one circumferential end portion 31A, and the protruding portion 32, and the second notch portion 332 is provided in the protruding portion 32.

[0029] This allows the housing 3 to be manufactured by bending a single sheet of material, and the first notch 331 and the second notch 332 to be easily formed.

[0030] The notch 33 is formed from a first notch 331 and a second notch 332. The notch 33 is recessed from one end of the housing 3 in the central axis direction to the other end in the central axis direction. That is, the housing 3 has a notch 33 that is recessed inward from the outer edge of the housing 3 in the central axis direction. The notch 33 has a first notch 331 that is recessed inward from the outer edge of the housing 3 in the central axis direction, and a second notch 332 that is recessed inward from the outer edge of the first notch 331 in the central axis direction. To put it another way, with the outside of the housing 3 as one side in the central axis direction, the housing 3 has a notch 33 that is recessed from the outer edge of the housing 3 to the other end in the central axis direction.

[0031] The lead wires (not shown) of coil 2 are led out of the housing 3 through the notch 33. Here, Figure 4 is a plan view showing a part of the configuration of the vibration motor 10. Figure 4 is a view of the housing 3 in a direction perpendicular to the first region 34. The first region 34 is a flat bottom portion located on the other side in the first direction of the housing 3. That is, the first region 34 is a planar portion.

[0032] As shown in Figure 4, an FPC (flexible printed circuit board) 9 is fixed to the housing 3. That is, the stationary part 1 has an FPC 9 fixed to the housing 3. The FPC 9 has a base portion 91 extending in the direction of the central axis. The other end 911 of the base portion 91 in the direction of the central axis is fixed to the first region 34. The base portion 91 extends projecting from the lid portion 41 to the other side in the direction of the central axis. That is, the FPC 9 has a base portion 91 that extends in the direction of the central axis and is fixed to the first region 34.

[0033] The base portion 91 has electrode portions 91A and 91B. The lead wires drawn out from the notch portion 33 are connected to the electrode portions 91A and 91B. In this way, in the vibration motor 10 of this embodiment, the lead wires of the coil 2 are connected to the FPC 9 outside the housing 3, thus improving the workability of the connection.

[0034] As shown in Figure 3, the first region 34 has a protrusion 32 and circumferential side portions 341 of the protrusion 32. The circumferential side portions 341 extend in the direction of the central axis. Therefore, the first region 34 is provided with a first notch 331 and a second notch 332. That is, the housing 3 has a first region 34 in which the first notch 331 and the second notch 332 are formed.

[0035] As shown in Figure 4, the other end 911 in the central axis direction of the FPC 9 is fixed so as to cover a part of the first notch 331. Alternatively, the other end 911 in the central axis direction may be fixed so as to cover the entire first notch 331. That is, the FPC 9 is fixed to the outer circumferential surface of the first region 34 so as to cover at least a part of the first notch 331. This suppresses the vibration of the leader wire in the notch 33.

[0036] As shown in Figure 4, the other end 911 of the FPC 9 in the direction of the central axis has an FPC notch 911A that is recessed toward one side in the direction of the central axis. That is, in the orientation when the FPC 9 is fixed to the first region 34, the FPC 9 has an FPC notch 911A that is recessed toward one side in the direction of the central axis from the outer edge on the other side in the direction of the central axis. The lead wires of the coil 2 are drawn out through the notch 33 and the FPC notch 911A. That is, the lead wires of the coil 2 are drawn out to the outside of the housing 3 through the notch 33 and the FPC notch 911A.

[0037] When fixing the FPC9 to the housing 3, the FPC9 can be moved from one side along the central axis to the other side, allowing the lead wires to be inserted into the FPC notch 911A, thus facilitating the fixing of the FPC9. Furthermore, since both sides of the FPC notch 911A are fixed to the housing 3, the fixing area is increased, thereby strengthening the fixation.

[0038] As shown in Figure 4, the FPC 9 is provided with a protruding piece 92 that protrudes from the other end 911 in the central axis direction to one side in the circumferential direction, and a protruding piece 93 that protrudes from the other end 911 in the central axis direction to the other side in the circumferential direction. The housing 3 has a bent portion 35 connected to one side in the circumferential direction of the first region 34, and a bent portion 36 connected to the other side in the circumferential direction of the first region 34. The bent portions 35 and 36 are bent so as to be convex in a second direction away from each other. The protruding piece 92 is fixed to the outer circumferential surface of the bent portion 35. The protruding piece 93 is fixed to the outer circumferential surface of the bent portion 36. That is, the FPC 9 has protruding pieces 92 and 93 that protrude from the base portion 91 on both sides in the circumferential direction and are fixed to the bent portions 35 and 36.

[0039] In other words, the housing 3 has bent portions 35 and 36 connected to both circumferential ends of the first region 34, and the FPC 9 is fixed to the first region 34 and the bent portions 35 and 36. This increases the contact area of ​​the FPC 9 with the housing 3, thereby improving the fixing strength.

[0040] Furthermore, as shown in Figure 4, when viewed in a direction perpendicular to the first region 34, the protruding pieces 92 and 93 overlap with the electrode portions 91A and 91B in the direction of the central axis. This prevents the portions of the base 91 where the electrodes 91A and 91B are provided from peeling off from the housing 3 when tension is applied to the base 91, and prevents poor connections between the lead wires and the electrode portions 91A and 91B. For a similar effect, when viewed in a direction perpendicular to the first region 34, the protruding pieces 92 and 93 may be positioned one side of the electrode portions 91A and 91B in the direction of the central axis (upwards in the plane of Figure 4).

[0041] Furthermore, if the housing has multiple notches, it is sufficient that a second notch be provided in at least one of the notches. For example, in this embodiment, the housing 3 has notches in addition to the notch 33 which is composed of a first notch 331 and a second notch 332. The other notches are the same shape as the notch 33, except for the second notch 332, and one notch 37 (Figure 3) is provided on the other side in the direction of the central axis, and two notches 38 (Figure 2) are provided in the housing 3 on the opposite side from the first region 34 across the central axis.

[0042] <3. Holder Configuration> Figure 5 is a perspective view showing the configuration of the core 6 and holder 71 in the movable part 5. Figure 5 shows the holder 71 attached to the core 6. Figure 6 is an exploded perspective view showing the core 6 and holder 71 separated. Figure 7 is a perspective view of the holder 71.

[0043] The holder 71 has a recess 713 (Figure 7) that is recessed on one side in the central axis direction. By inserting the magnet 6A into the recess 713, the holder 71 is fixed to the magnet 6A. In other words, the movable part 5 has the magnet 6A and the holder 71 which is fixed on one side in the central axis direction of the magnet 6A and has a radial width greater than that of the magnet 6A.

[0044] The holder 71 has a holder notch 711 that is recessed from the outer edge of the holder 71 toward one side in the first direction. The bottom surface 711A of the holder notch 711 is positioned toward the other side in the first direction from the outer edge of the magnet 6A.

[0045] Here, Figure 8 is a perspective view showing the configuration of holder 710 according to a comparative example. Holder 710 has a holder notch 7101. Holder notch 7101 has openings 7101A and 7101B. Opening 7101A opens in the first direction. Opening 7101B is connected to one side of opening 7101A in the central axis direction and opens in the central axis direction. When opening 7101A is viewed in the first direction, a part of the other end face of magnet 6A in the first direction is exposed. When opening 7101B is viewed in the central axis direction, a part of the one end face of magnet 6A in the central axis direction is exposed.

[0046] In contrast, with the configuration according to this embodiment (Figure 5), the magnet 6A is not exposed even when the holder notch 711 is viewed in the first direction and the central axis direction. Therefore, the contact area of ​​the holder 71 with the magnet 6A is increased, and the fixing strength of the holder 71 is improved. Furthermore, when fixing with liquid adhesive, the possibility of the adhesive leaking from the holder notch 711 during fixing is reduced.

[0047] Furthermore, as shown in Figure 6, the holder 71 has a holder flat portion 714 that extends perpendicular to the central axis J, and a holder wall portion 715 that extends from the first outer end of the holder flat portion 714 toward the other side in the central axis direction. The holder flat portion 714 covers at least a portion of the first outer end of the magnet 6A. With such a holder flat portion 714 and holder wall portion 715, the contact area between the holder 71 and the magnet 6A is increased, and the fixing strength of the holder 71 can be improved.

[0048] Furthermore, the holder 71 has a holder notch 712 at a position opposite to the holder notch 711 in the first direction.

[0049] <4. About jigs> This section describes the jig used in the manufacturing of the vibration motor 10. Figure 9 is a perspective view showing an intermediate stage in the manufacturing process of the vibration motor 10. In Figure 9, the housing 3 is installed on the jig 100.

[0050] The jig 100 includes a base portion 1000, a positioning portion 1001, and a hole portion 1002. The positioning portion 1001 is positioned on one side of the base portion 1000 in the first direction. The positioning portion 1001 includes a first extension portion 1001A extending in the direction of the central axis and a second extension portion 1001B extending in the direction of the central axis. The second extension portion 1001B is positioned on one side of the first extension portion 1001A in the first direction. The width of the second extension portion 1001B in the second direction is narrower than the width of the first extension portion 1001A in the second direction. That is, the positioning portion 1001 is formed in a rail shape extending in the direction of the central axis.

[0051] The hole 1002 is formed by recessing from one side of the base portion 1000 in the first direction to the other side in the first direction, and penetrates in the second direction.

[0052] The first extension portion 1001A is inserted into the first notch portion 331 of the housing 3, and the housing 3 is installed on the base portion 1000. As shown in Figure 10, in this installed state, the hole portion 1002 and the second notch portion 332 face each other in the first direction.

[0053] The housing 3 is installed on the jig 100 with the lead wire already pulled out from the second notch 332 to the outside of the housing 3. However, since the first notch 331 is used to fix the jig 100 and the second notch 332 is used to pull out the lead wire, interference between the jig and the lead wire is suppressed. This suppresses adverse effects on the lead wire.

[0054] Furthermore, the holder 71, which is fixed to the magnet 6A, is installed on the positioning unit 1001. More specifically, the holder 71 is slid from one side in the central axis direction to the other side in the central axis direction so that the second extension portion 1001B passes through the holder notch portion 711 of the holder 71. As a result, in the manufactured vibration motor 10, when viewed from the first direction, the first notch portion 331 overlaps with the holder notch portion 711. That is, the holder 71 has a holder notch portion 711 that overlaps with the notch portion 33 when viewed from the first direction. As a result, by fixing the notch portion 33 of the housing 3 and the holder notch portion 711 to the positioning unit 1001, relative positioning between the housing 3 and the holder 71 can be performed.

[0055] Furthermore, the holder notch 711 penetrates from one side along the central axis to the other side along the central axis (see Figure 5). This allows the magnet 6A to be inserted into the housing 3 by sliding the holder 71 in the central axis direction while positioning it on the positioning part 1001.

[0056] Furthermore, the holder notch 711 is provided in the holder's flat surface 714 and the holder's wall surface 715 (see Figure 6). This allows the holder notch 711 to be elongated in the direction of the central axis, enabling the holder 71 to be stably installed in the jig 100.

[0057] <5. Haptic Devices> The vibration motor 10 according to the embodiment described above can be mounted on various electronic devices. This allows the electronic device to vibrate, enabling functions such as notification to the operator or haptic feedback.

[0058] The vibration motor 10 can be mounted on a tactile device 200, for example, schematically shown in Figure 11. The tactile device 200 comprises a housing 200A and a vibration motor 10 housed within the housing 200A. The tactile device 200 is a device that provides tactile stimulation to a person operating the tactile device 200 through vibrations from the vibration motor 10.

[0059] The haptic device 200 shown in Figure 11 is, for example, a stylus pen. The vibration motor 10 outputs vibrations according to the settings, so that even though the haptic device 200 is being operated by touching it to a tablet device or the like, the user can be given haptic feedback as if they were operating on paper or a blackboard.

[0060] Furthermore, haptic devices are not limited to stylus pens; smartphones, tablets, gaming devices, and wearable devices can also be used.

[0061] <6. Others> The embodiments of this disclosure have been described above. However, the scope of this disclosure is not limited to the embodiments described above. This disclosure can be implemented by making various modifications to the embodiments described above without departing from the spirit of the invention. Furthermore, the matters described in the embodiments described above can be combined as appropriate and arbitrary as long as they do not create any contradictions.

[0062] <7. Addendum> As described above, the vibration motor 10 according to one aspect of the present disclosure comprises a stationary part 1 and a movable part 5 that can vibrate in the direction of the central axis relative to the stationary part. The stationary part comprises a coil 2 that provides driving force to the movable part by energizing, and a housing 3 that houses the movable part and the coil. With the outer side of the housing as one side in the direction of the central axis, the housing has a notch 33 that is recessed from the outer edge of the housing toward the other side in the direction of the central axis. The movable part comprises a magnet 6A and a holder 71 fixed to one side of the magnet in the direction of the central axis and having a radial width greater than that of the magnet. With the direction perpendicular to the direction of the central axis as the first direction, the holder has a holder notch 711 that is recessed from the outer edge of the holder toward one side in the first direction and overlaps with the notch when viewed from the first direction. The bottom surface 711A of the holder notch is positioned toward the other side in the first direction than the outer edge of the magnet (first configuration).

[0063] Furthermore, in the first configuration described above, the holder notch 711 penetrates from one side in the central axis direction to the other side in the central axis direction (second configuration).

[0064] Furthermore, in the first or second configuration described above, the holder 71 has a holder flat portion 714 extending perpendicular to the central axis, and a holder wall portion 715 extending from the outer end of the holder flat portion in the first direction toward the other side in the central axis direction. The holder flat portion covers at least a part of the outer end of the magnet 6A in the first direction. The holder notch 711 is provided in the holder flat portion and the holder wall portion (third configuration). [Industrial applicability]

[0065] The technology disclosed herein can be used, for example, in vibration motors mounted on various devices. [Explanation of symbols]

[0066] 1 Stationary part 2 coils 3 Housing 5 Moving parts 6. Core section 6A, 6B Magnets 6C Magnetic body part 10 Vibration motor 31 Continuous section 31A One end in the circumferential direction 31B Other end in circumferential direction 32 Protrusion 33 Notch 34 First area 35,36 Bending section 37, 38 Notches 41,42 Lid 71,72 holder 81,82 Elastic members 91 Base 91A,91B Electrode part 92,93 Projecting piece 100 jigs 200 haptic devices 200A Casing 331 1st notch 332 Second notch 341 Both sides in the circumferential direction 710 Holder 711 Holder notch 711A bottom part 712 Holder notch 713 recess 714 Holder flat surface 715 Holder wall 911 Other end in central axis direction 911A FPC notch 1000 Base 1001 Positioning section 1001A 1st extension section 1001B 2nd extension section 1002 Hole 7101 Holder notch 7101A,7101B opening J center axis S Gap

Claims

1. The stationary part, A movable part that can vibrate in the central axis direction relative to the stationary part, It has, The aforementioned stationary part is, A coil that applies driving force to the movable part by energizing it, It has a housing that accommodates the movable part and the coil, The housing has a notch that is recessed inward from the outer edge of the housing in the central axis direction, The aforementioned notch is A first notch recesses inward from the outer edge of the housing in the central axis direction, It has a second notch that is recessed inward from the outer edge of the first notch in the central axis direction, The lead wires of the coil are led out to the outside of the housing through the notch, The aforementioned housing is A continuous portion formed continuously in the circumferential direction, The continuous portion has a protruding portion that extends from one end in the circumferential direction to one side in the circumferential direction, The second notch is provided in the protruding portion, The first notch is formed by the other circumferential end, the one circumferential end, and the protruding portion. The other end in the circumferential direction is straight throughout the central axis direction, A vibration motor in which the outer edge extending in the direction of the central axis, which forms a gap with the other circumferential end of the protruding portion, is straight in the direction of the central axis, at least in the portion closest to the other circumferential end.

2. The stationary part has an FPC fixed to the housing, The housing has a first region in which the first notch and the second notch are formed, The vibration motor according to claim 1, wherein the FPC is fixed to the outer circumferential surface of the first region so as to cover at least a portion of the first notch.

3. With the outer side of the housing being one side in the central axis direction, The FPC has an FPC notch that, in the orientation when fixed to the first region, is recessed from the outer edge on the other side in the central axis direction toward the one side in the central axis direction, The vibration motor according to claim 2, wherein the lead wires of the coil are led out to the outside of the housing through the notch and the FPC notch.

4. The first region is a planar portion. The housing has bent portions connected to both circumferential ends of the first region, The vibration motor according to claim 2 or 3, wherein the FPC is fixed to the first region and the bent portion.

5. With the outer side of the housing being one side in the central axis direction, The aforementioned FPC is A base extending in the direction of the central axis and fixed to the first region, A protruding piece that extends from the base on both sides in the circumferential direction and is fixed to the bent portion, It has, The base portion has an electrode portion, The vibration motor according to claim 4, wherein, when viewed in a direction perpendicular to the first region, the protruding piece overlaps with the electrode portion in the direction of the central axis, or is positioned on one side of the electrode portion in the direction of the central axis.

6. The casing and A tactile device comprising a vibration motor according to any one of claims 1 to 5, housed in the aforementioned housing.

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