Vibration transmission device, warning notification device having the vibration transmission device, audio device, and massage device

Abstract

The vibration transmission device has a vibration actuator that drives and vibrates a movable body that is elastically supported with respect to a fixed body in one direction of a vibration direction of the movable body, and a housing portion that houses the vibration actuator inside. The housing portion has an opening portion that exposes at least a part of the movable body so as to bring the movable body into contact with an object to which vibration is imparted, and the vibration transmission device has a protruding portion that protrudes from the movable body to the outside of the housing portion through the opening portion.

Description

Technical Field

[0001] This invention relates to a vibration transmission device for transmitting vibrations to a user, a warning notification device having a vibration transmission device, an audio device, and a massage device. Background Technology

[0002] A device is known to transmit vibrations to a user seated in a seat via a vibration transmission device installed in the seat (see Patent Document 1). For example, in Patent Document 1, a vibration transmission device is installed in a vehicle seat, and vibrations are transmitted via the vibration transmission device when conveying warnings or other information to the driver seated in the seat. In the vibration transmission device of Patent Document 1, a motor (hereinafter referred to as a vibration motor) with an eccentric counterweight mounted on a rotating shaft is used to generate vibrations.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent No. 6578290 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] A vibration motor vibrates its main body by rotating an eccentric counterweight. In principle, without increasing the weight of the eccentric counterweight or increasing its rotational speed, it's difficult to obtain a strong enough vibration to stimulate the user's sense of touch and muscles. Furthermore, to prevent objects that obstruct the rotation of the eccentric counterweight (such as trash) from entering, vibration motors are mostly housed inside a casing, making it difficult to directly transmit the vibration generated in the motor body. Therefore, the vibration from a vibration motor is often weak and, depending on the situation, sometimes goes unnoticed by the user. Additionally, a vibration motor requires a sufficient rotational speed to achieve maximum vibration, and reaching that speed takes time, resulting in poor responsiveness and difficulty in immediately transmitting vibration to the user. Thus, vibration transmission devices using vibration motors struggle to produce strong vibrations and have poor responsiveness; therefore, a vibration transmission device capable of delivering strong vibrations immediately is desired.

[0008] The purpose of this invention is to provide a vibration transmission device capable of immediately imparting a strong vibration, and an apparatus having a vibration transmission device.

[0009] Methods for solving problems

[0010] The vibration transmission device of the present invention has:

[0011] A vibration actuator that drives a movable body that is elastically supported by a fixed body to vibrate in one direction of the vibration direction of the movable body and causes it to vibrate.

[0012] The housing contains the vibration actuator.

[0013] The receiving portion has an opening that exposes at least a portion of the movable body so that the movable body can come into contact with an object to which vibration is imparted.

[0014] The warning notification device of the present invention has the above-described vibration transmission device, which imparts vibration to the target and notifies the target of a warning.

[0015] The audio device of the present invention has the above-described vibration transmission device, through which a vibration based on a sound source is imparted to an object.

[0016] The massage device of the present invention has the above-described vibration transmission device, which imparts vibration to the subject to perform a massage.

[0017] Invention Effects

[0018] According to the present invention, a strong vibration can be imparted immediately. Attached Figure Description

[0019] Figure 1 This is a perspective view of the vibration transmission device according to an embodiment of the present invention, viewed from an obliquely upward side.

[0020] Figure 2 It means from Figure 1 The side view of the vibration transmission device with the housing cover and housing base removed.

[0021] Figure 3 It is Figure 1 The exploded perspective view of the main structure of the vibration transmission device shown is viewed from an obliquely upward side.

[0022] Figure 4 It is Figure 1 The exploded perspective view of the main structure of the vibration transmission device shown is viewed from the lower oblique side.

[0023] Figure 5 Is Figure 3 The exploded perspective view of the vibration transmission device shown is taken from an obliquely upward side.

[0024] Figure 6 Is Figure 4 The exploded perspective view of the vibration transmission device shown is taken from the oblique lower side.

[0025] Figure 7 Yes Figure 1The diagram illustrates a portion of the interior of the vibration transmission device shown.

[0026] Figure 8 It means Figure 1 The figure shows a modified example (modification 1) of the vibration transmission device.

[0027] Figure 9 It means Figure 1 The figure shows a modified example (modification 2) of the vibration transmission device.

[0028] Figure 10 It means Figure 1 The figure shows a modified example (modification 3) of the vibration transmission device.

[0029] Figure 11 Viewed from the upper diagonal side Figure 1 The diagram shows a three-dimensional view of the electromagnetic actuator in the vibration transmission device.

[0030] Figure 12 Viewed from the lower diagonal side Figure 11 A three-dimensional view of the electromagnetic actuator shown.

[0031] Figure 13 yes Figure 11 The cross-sectional view of the electromagnetic actuator shown is along the direction of the arrow on line AA.

[0032] Figure 14 yes Figure 11 An exploded perspective view of the electromagnetic actuator shown.

[0033] Figure 15 It means Figure 11 The diagram shows the magnetic circuit structure of the electromagnetic actuator.

[0034] Figure 16A and Figure 16B Yes Figure 11 The diagram illustrates the operation of the electromagnetic actuator.

[0035] Figure 17 This is a diagram showing an example of a vibration transmission unit (Structural Example 1).

[0036] Figure 18 This is a diagram showing another example of a vibration transmission unit (Structural Example 2).

[0037] Figure 19 This is a diagram showing another example of a vibration transmission unit (Structural Example 3).

[0038] Figure 20 This is a diagram showing another example of a vibration transmission unit (Structural Example 4).

[0039] Figure 21This is a diagram showing another example of a vibration transmission unit (Structural Example 5).

[0040] Figure 22 This is a diagram showing an assembly example of a vibration transmission unit. Detailed Implementation

[0041] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0042] In this embodiment, an orthogonal coordinate system (X, Y, Z) is used for explanation. The figures described later also use a common orthogonal coordinate system (X, Y, Z). Hereinafter, the width, depth, and height of the vibration transmission device 100 are the lengths in the X, Y, and Z directions, respectively, and the width, depth, and height of the electromagnetic actuator 10 are also correspondingly set as the lengths in the X, Y, and Z directions. Furthermore, the positive Z direction is the direction from which vibration is imparted to the user (the part that imparts vibration), and is designated as "upper side," while the negative Z direction is the direction away from the user, and is designated as "lower side."

[0043] [Vibration Transmission Device 100]

[0044] Reference Figures 1 to 7 The vibration transmission device 100 of this embodiment will be described.

[0045] Figure 1 This is a perspective view of the vibration transmission device 100. Figure 2 This is a side view showing the state in which the receiving cover and receiving base are removed from the vibration transmission device 100. Figure 3 This is an exploded perspective view of the main structure of the vibration transmission device 100, viewed from an obliquely upper side. Figure 4 This is an exploded perspective view of the main structure of the vibration transmission device 100, viewed from a slightly lower angle. Figure 5 Is Figure 3 The exploded perspective view of the vibration transmission device 100 shown is a view viewed from an obliquely upper side. Figure 6 Is Figure 4 The exploded perspective view of the vibration transmission device 100 shown is a view viewed from the oblique lower side. Figure 7 This is a diagram illustrating a portion of the interior of the vibration transmission device 100.

[0046] Figures 1 to 7 The vibration transmission device 100 shown includes an electromagnetic actuator 10, which is an example of a vibration actuator. It is a device that imparts and transmits vibrations generated by the electromagnetic actuator 10 according to an input drive signal to an object (e.g., the target). Furthermore, regarding the drive signal, see [reference needed]. Figures 17-21 The details will be provided later.

[0047] Vibration transmission device 100 is provided, for example, in the following description Figure 22 The seat 400 shown provides vibration to the user (object) sitting in the seat 400. The seat 400 with vibration transmission device 100 functions as a warning notification device that notifies the user of warnings by providing vibration to the user and a massage device that massages the user. In addition, it functions as an audio device that provides vibration based on a sound source to the user.

[0048] like Figures 1-4 As shown, the vibration transmission device 100 includes: an electromagnetic actuator 10, a housing cover 60, a housing base 70, and a transmission part 80.

[0049] The housing cover 60 and housing base 70 are housing portions that house the electromagnetic actuator 10. As described below, the electromagnetic actuator 10 is fixed to the housing base 70, and the housing cover 60 is fixed to the housing base 70 in a manner that covers the electromagnetic actuator 10. In addition, as described below, the transmission portion 80 is mounted on the movable body 40 of the electromagnetic actuator 10, and is configured such that at least a portion of the protrusion 82, described later, protrudes through the opening 62 of the housing cover 60 and toward the outside of the housing cover 60.

[0050] (Containment cover 60)

[0051] The receiving cover 60 is a covered cylindrical body that houses the electromagnetic actuator 10 between itself and the receiving base 70. For example, it is rectangular in shape in a top view viewed from the Z direction. The Z-direction front side of the receiving cover 60 forms a facing surface 61 that faces the user. Openings 62 are formed through the facing surface 61, corresponding to the number of protrusions 82 in the transmission section 80. Here, for example, there are 2 rows × 3 openings, totaling 6 openings 62.

[0052] In addition, such as Figure 4 As shown, an impact mitigation part 63 (the limiting part in this invention) is provided on the inner surface 61a of the opposing surface 61 (the side of the electromagnetic actuator 10), which is opposite to the movable panel 81 of the transmission part 80 described later. The impact mitigation part 63 is formed, for example, by a damper made of an elastic body. The movable panel 81 abuts against the impact mitigation part 63, thereby suppressing the movement (flying out) of the movable panel 81 in the positive Z direction during vibration, and mitigating the impact from the movable panel 81.

[0053] In addition, such as Figure 4As shown, in the receiving cover portion 60, an embedded nut 65 is provided at the bottom 64 where it connects to the receiving base portion 70. Here, as an example, embedded nuts 65 are respectively provided at the four corners 64a of the bottom 64. The receiving cover portion 60 is fixed to the receiving base portion 70 by screwing the screw 77 (described later) into the embedded nut 65.

[0054] (Containment Base 70)

[0055] The housing base 70 has a flat mounting plate 71 that holds the electromagnetic actuator 10 and the housing cover 60. On the inner surface 71a of the inner side (electromagnetic actuator 10 side) of the mounting plate 71, a protruding part 72 is provided protruding in the Z direction, opposite to the impact buffer 86 described later. Here, as an example, the two protruding parts 72 are formed in two locations on the inner surface 71a in a cuboid shape extending in the X direction, so that the four impact buffers 86 are disposed at the four corners of the movable panel 81, corresponding to the four impact buffers 86.

[0056] Furthermore, an insertion portion 73 is provided on the inner surface 71a of the fixing plate 71 for inserting the support column 11, which will be described later. Here, as an example, the insertion portion 73 is arranged at four locations on the inner surface 71a in a cylindrical shape, corresponding to the cylindrical support columns 11 arranged at the four corners of the fixing body 30, which will be described later.

[0057] Furthermore, a recess 74, which accommodates the iron core assembly 20 (described later), is provided on the inner surface 71a of the fixing plate 71. Here, as an example, the recess 74 is positioned at a point in the central portion of the inner surface 71a, corresponding to the rectangular iron core assembly 20 disposed in the central portion of the fixing body 30, and is formed into a rectangular shape. By providing such a recess 74, the length (thickness) of the vibration transmission device 100 in the Z direction can be shortened, achieving a lower profile and a thinner profile.

[0058] Furthermore, a through hole 75 is provided on the inner side of the recess 74 for wiring connected to the electromagnetic actuator 10 to pass through. Additionally, ribs 76 are provided around the recess 74. By providing ribs 76 around the recess 74, which is recessed from the inner surface 71a of the fixing plate 71, the strength of the fixing plate 71 is improved.

[0059] Furthermore, although the symbols are omitted, the fixing plate 71 has through holes for screws 77 and 78, which serve as locking components, to pass through. Screws 77 are inserted into the through holes of the fixing plate 71 and engage with embedded nuts 65, thereby fixing the receiving cover 60 to the receiving base 70. Additionally, screws 78 are inserted into the through holes of the fixing plate 71 and engage with support pillars 11, thereby fixing the fixing body 30 of the electromagnetic actuator 10 to the receiving base 70.

[0060] (Department 80)

[0061] The transmission section 80 is the part that transmits the vibration of the electromagnetic actuator 10 housed inside the housing section (housing cover section 60 and housing base section 70) to the outside.

[0062] The transmission section 80 has a flat movable panel 81 with a fixed protrusion 82. In order to make the vibration transmission device 100 low-profile and thin, the movable panel 81 is preferably flat, but the shape, material, structure, etc. can be arbitrary as long as the protrusion 82 can be fixed and it can be installed on the movable body 40 described later.

[0063] On the Z-direction positive side of the movable panel 81, i.e., the upper surface 81a, a protrusion 82 is mounted by a screw 83 serving as a locking member. Here, as an example, the protrusion 82 is mounted on the upper surface 81a such that at least a portion of the protrusion 82 protrudes through the opening 62 of the receiving cover 60 and outwards from the receiving cover 60. Furthermore, here, as an example, six protrusions 82 are mounted on the upper surface 81a in two rows of three.

[0064] The protrusion 82 is configured to make direct contact with the user when the vibration transmission device 100 is installed, or to make indirect contact through other components (cushioning material, fabric, or other vibration-transmitting material). Furthermore, the protrusion 82 is preferably in point contact or near-point contact with the user within a range that does not apply excessive force, so as to transmit vibration more strongly to the user (concentrating the applied force). Therefore, the protrusion 82 is configured such that its diameter tapers towards its front end (positive side in the Z direction). By configuring and constructing the protrusion 82 as described above, for example, even if the user's sitting method or posture changes while seated in the chair 400 described later, the protrusion 82 can reliably contact the area to which the user's stimulation is applied, and can reliably transmit vibration to the user.

[0065] The front end portion 82a on the user side (positive side in the Z direction) of the protrusion 82 can be made of the same material as the protrusion 82, or it can be changed depending on the intended use. For example, in the case of a warning notification device, a massage device, or an audio device, the material constituting the front end portion 82a can be changed to make the intensity of the vibration transmitted to the user appropriate.

[0066] For example, in the case of a warning notification device, a strong vibration is preferred for issuing a warning; in the case of a massage device or an audio device, a vibration of an appropriate intensity that is neither too strong nor too weak is preferred. The material for the protrusion 82 and the front end portion 82a can be metal, but lightweight materials with selectable hardness, such as plastic or rubber, can also be used.

[0067] In this way, the shape, material, structure, etc. of the protrusion 82 are appropriately changed according to the intensity of the vibration transmitted to the user.

[0068] The lower surface 81b of the movable panel 81, on the negative Z-direction side, is mounted to the movable body 40 of the electromagnetic actuator 10 via a spacer 85 using a screw 84, which serves as a locking component. This will be explained later. Figure 11 As shown, face fixing holes 42 are formed at the four corners of the face fixing portion 44 of the movable body 40. Screws 84 are inserted into the face fixing holes 42 and the spacer 85, and are screwed into the threaded holes (omitted) of the movable panel 81. In this way, by fixing the movable panel 81 to the movable body 40, the movable panel 81 and the protrusion 82 vibrate integrally with the movable body 40. In this embodiment, the movable body 40, the movable panel 81, and the protrusion 82 correspond to the movable body in the present invention.

[0069] An impact-absorbing portion 86 (a limiting portion in this invention) is provided on the lower surface 81b of the movable panel 81. Here, as an example, the impact-absorbing portion 86 is disposed at the four corners of the lower surface 81b. Specifically, on one end of the lower surface 81b in the Y direction (for example, ... Figure 4 On the left end side of the middle, two impact buffers 86 are arranged along the X direction, and on the other end side in the Y direction (e.g., Figure 4 Two shock-absorbing sections 86 are arranged along the X direction on the right side of the middle section.

[0070] The shock-absorbing part 86 is formed, for example, by a damper made of an elastic body. The shock-absorbing part 86 abuts against the protruding part 72, thereby suppressing the movement (pressing) of the movable panel 81 in the negative Z direction during vibration and mitigating the impact from the movable panel 81.

[0071] Thus, the movable range of the movable panel 81 is limited by the impact mitigation portion 86 and the aforementioned impact mitigation portion 63. For example, when assembling the vibration transmission device 100, if the vibration transmission device 100 is mistakenly dropped, and the movable range of the movable panel 81 is not limited, the elastic portion 50 of the electromagnetic actuator 10 (described later) may be plastically deformed and damaged due to the impact of the drop. In contrast, in this embodiment, the impact is mitigated while limiting the movable range of the movable panel 81, thus preventing plastic deformation and damage to the elastic portion 50.

[0072] Furthermore, if the impact from the movable panel 81 becomes stronger, the receiving cover 60 and the receiving base 70 may break and be damaged if they directly bear the impact. In contrast, in this embodiment, the impact damping portion 63 and the impact damping portion 86 bear the impact from the movable panel 81, thus dampening the impact and preventing damage to the receiving cover 60 and the receiving base 70.

[0073] The structure of the electromagnetic actuator 10 and the vibration of the movable body 40 will be described later. The vibration direction of the movable body 40 is the Z-direction, which is perpendicular to the surface of the opposing surface 61 that is positioned towards the user. By setting the vibration direction of the movable body 40 to be perpendicular to the surface of the opposing surface 61, a stronger vibration can be driven on the movable panel 81, i.e., the protrusion 82, compared to a direction other than perpendicular to the surface, thus enabling the transmission of a stronger vibration to the user. Therefore, by arranging the vibration transmission device 100 in such a way that the protrusion 82 contacts a part of the user's body, the electromagnetic actuator 10 is driven to vibrate the movable body 40, thereby reliably transmitting vibration to the user via the protrusion 82.

[0074] Furthermore, when the electromagnetic actuator 10 is continuously driven, the coil 22 constituting the electromagnetic actuator 10 (described later) may heat up. Even if the coil 22 heats up, in this embodiment, since the electromagnetic actuator 10 is housed inside the housing portion (housing cover portion 60 and housing base portion 70), users or objects that transmit vibrations will not come into contact with the coil 22. Therefore, the impact on users and the like can be suppressed, ensuring safety.

[0075] <Modification 1 of Vibration Transmission Device 100>

[0076] In this embodiment, such as Figure 7 As shown, the vibration transmission device 100 has impact mitigation portions (impact mitigation portion 63 and impact mitigation portion 86) on both the positive and negative sides of the movable panel 81 in the Z direction, but it may also have a structure that does not have any one or both of the impact mitigation portions. For example, as Figure 8 As shown, the vibration transmission device 100 may also have a structure without both the impact damping section 63 and the impact damping section 86. Furthermore, as described later... Figure 9 As shown, the vibration transmission device 100 may also have a structure with an impact damping section 86 but without an impact damping section 63.

[0077] exist Figure 8 In the structure shown, the inner surface 61a of the opposing surface 61 (the limiting part in this invention) suppresses the movement (flying out) of the movable panel 81 in the positive Z direction during vibration. Furthermore, the protruding part 72 of the fixing plate 71 (the limiting part in this invention) suppresses the movement (pressing in) of the movable panel 81 in the negative Z direction during vibration. In this case, by adjusting the thickness of the opposing surface 61 and the height of the protruding part 72, the movement of the inner surface 61a and the protruding part 72 in the Z direction of the movable panel 81 can be suppressed.

[0078] exist Figure 9In the structure shown, the inner surface 61a of the opposing surface 61, the flange portion 66 (the limiting portion in this invention, described later), and the protrusion 82 having the flange portion 82b, described later, abut against each other, thereby suppressing the movement (flying out) of the movable panel 81 in the positive Z direction during vibration. Regarding the movement (pressing in) of the movable panel 81 in the negative Z direction during vibration, and... Figure 7 Similarly, in the structure shown, the impact damping portion 86 suppresses movement and mitigates impacts from the movable panel 81. In this case, by adjusting the thickness of the opposing surface 61 and the flange portion 66, movement of the inner surface 61a and the flange portion 66 on the positive side of the movable panel 81 in the Z direction can be suppressed.

[0079] <Modification 2 of Vibration Transmission Device 100>

[0080] In this embodiment, there is a gap between the protrusion 82 of the transfer section 80 (movable panel 81) and the opening 62 of the receiving cover section 60, but a labyrinthine structure can also be provided in this gap. For example, as Figure 9 As shown, a flange portion 66 protruding to the negative side in the Z direction is formed at the edge portion of the opening 62. The flange portion 82b protruding to the positive side in the Z direction is formed by facing the outer peripheral surface of the flange portion 66 and surrounding the flange portion 66.

[0081] Furthermore, a flange 82b is provided on the outer periphery of the lower part of the protrusion 82, but a flange may also be provided on the movable panel 81. In addition, this is a single-layer labyrinth structure based on the flange 66 and the flange 82b, but multiple flanges of the same type as the flange 66 and the flange 82b may be provided to form a labyrinth structure with two or more layers.

[0082] like Figure 9 As shown, by forming flange portion 66 and flange portion 82b, a labyrinthine structure is formed between flange portion 66 and flange portion 82b. This labyrinthine structure prevents foreign objects such as garbage from entering the interior of the receiving cover portion 60 through opening portion 62. As a result, the operation of electromagnetic actuator 10 can be stabilized.

[0083] <Modification 3 of Vibration Transmission Device 100>

[0084] like Figure 9 As shown, a labyrinthine structure can also be provided between the opening 62 and the protrusion 82, but as... Figure 10As shown, a retractable protective cover 67 may also be provided, which covers the receiving cover 60 from the outside, and includes an opening 62. By covering the receiving cover 60 with the protective cover 67, foreign objects such as trash can be prevented from entering the interior of the receiving cover 60 through the opening 62. This ensures stable operation of the electromagnetic actuator 10. In addition, the protective cover 67 is retractable, so it can be transmitted to the user without hindering the vibration of the protrusion 82.

[0085] (Electromagnetic actuator 10)

[0086] Reference Figures 11-14 The electromagnetic actuator 10 of the vibration transmission device 100 will be described.

[0087] Figure 11 This is a perspective view of the electromagnetic actuator 10 of the vibration transmission device 100 as viewed from an obliquely upward side. Figure 12 This is a perspective view of the electromagnetic actuator 10 viewed from the lower oblique side. Figure 13 yes Figure 11 The electromagnetic actuator 10 shown is a cross-sectional view along the direction of the arrow on line AA. Figure 14 This is an exploded perspective view of the electromagnetic actuator 10.

[0088] The electromagnetic actuator 10 functions as a vibration source for the movable panel 81 with the protrusion 82 (see reference). Figures 2-7 The vibration corresponding to the input drive signal is transmitted to the user of the vibration transmission device 100 (e.g., a user sitting in the seat 400 described later).

[0089] The electromagnetic actuator 10 has a fixed body 30 and a movable body 40. The movable body 40 is fixed with a movable panel 81 and is supported on the fixed body 30 via an elastic part 50 in a manner that allows for elastic vibration. The electromagnetic actuator 10 drives the movable body 40 in one direction, and the force generated by the elastic part 50 causes the movable body 40 to move in the opposite direction, thereby causing the movable body 40 to reciprocate linearly.

[0090] Here, driving in one direction means that, within a movable body 40 supported on a fixed body 30 via an elastic portion 50 in a manner capable of moving along the vibration direction, the movable body 40 is driven in one direction of vibration by energizing the coil 22 (described later). Thus, when the movable body 40 is driven in one direction of vibration, after this drive, the force of the elastic portion 50 causes the movable body 40 to move in the opposite direction. By repeatedly performing this drive, the movable body 40 vibrates. The resulting vibration of the movable body 40 has an extremely fast response from the input of a drive signal to the coil 22 to the generation of vibration, making it highly effective, for example, in situations where it is desirable to immediately convey a warning to the user by transmitting vibration.

[0091] The fixed body 30 has an iron core assembly 20 formed by winding a coil 22 on an iron core 24 and a base portion 32, as detailed later. Additionally, the movable body 40 has a yoke 41 that serves as a magnetic body. Elastic portions 50 (50-1, 50-2) elastically support the movable body 40 in a manner that allows it to move relative to the fixed body 30 in the vibration direction.

[0092] Furthermore, the electromagnetic actuator 10 is driven to move the movable body 40, which is supported by the elastic part 50 in a manner that allows it to move relative to the fixed body 30, in one direction. Conversely, movement of the movable body 40 in the opposite direction is achieved by the force exerted by the elastic part 50.

[0093] Specifically, the electromagnetic actuator 10 vibrates the magnetic yoke 41 of the movable body 40 via the iron core assembly 20. More specifically, the movable body 40 vibrates due to the attraction force of the energized coil 22 and the iron core 24 energized by the energized coil 22, and the force based on the elastic parts 50 (50-1, 50-2). In this embodiment, the electromagnetic actuator 10 is driven by the action of an electromagnet.

[0094] Furthermore, the electromagnetic actuator 10 is configured as a flat shape with the Z-direction as its thickness direction. The electromagnetic actuator 10 causes the movable body 40 to vibrate relative to the fixed body 30 in the Z-direction, i.e., the thickness direction. In this way, in the electromagnetic actuator 10, one of the components (fixed body 30 and movable body 40) that are separately arranged on the back surface of the electromagnetic actuator 10 in its own thickness direction approaches and separates relative to the other in the Z-direction.

[0095] In this embodiment, the electromagnetic actuator 10 moves the movable body 40 to the negative side of the Z direction by the adsorption force of the iron core 24, and moves the movable body 40 to the positive side of the Z direction by the force of the elastic parts 50 (50-1, 50-2).

[0096] In the electromagnetic actuator 10 of this embodiment, the movable body 40 is elastically supported at a position symmetrical with respect to the movable center point of the movable body 40 by a plurality of elastic portions 50 (50-1, 50-2) arranged in a direction orthogonal to the Z direction.

[0097] <Fixed Body 30>

[0098] like Figure 13 and Figure 14 As shown, the fixing body 30 has: a core assembly 20 having a coil 22 and a core 24; and a base portion 32.

[0099] The base portion 32 fixes the core assembly 20 and supports the movable body 40 for vibration via the elastic portions 50 (50-1, 50-2). The base portion 32 is a flat component that forms the bottom surface of the electromagnetic actuator 10. The base portion 32 has a mounting portion 32a that fixes one end of the elastic portions 50 (50-1, 50-2) in a manner that clamps the core assembly 20. The mounting portions 32a are arranged at equal intervals from the core assembly 20. Furthermore, this interval forms the interval of the deformation region of the elastic portions 50 (50-1, 50-2).

[0100] like Figure 14 As shown, the mounting portion 32a has a fixing hole 321 for fixing the elastic portion 50 (50-1, 50-2) and a fixing plate 71 for fixing the base portion 32 to the receiving base portion 70 (see reference). Figure 3 The fixing holes 322 are provided at both ends of the mounting portion 32a in a manner that clamps the fixing holes 321, such as... Figures 2-6 As shown, the base portion 32 is fixed to the fixing plate 71 via cylindrical support columns 11. Therefore, the base portion 32 is positioned relative to the fixing plate 71 (see reference 1). Figure 3 (etc.) The entire surface is stably fixed.

[0101] In this embodiment, the base portion 32 is configured such that one side of the mounting portion 32a and the other side are located at a position where the bottom portion 32b is separated in the width direction (X direction). A recessed portion is provided between the mounting portions 32a, and the recessed portion has a bottom portion 32b with a height lower than that of the mounting portion 32a. The space inside the recessed portion, i.e., the surface side of the bottom portion 32b, ensures the elastic deformation area of ​​the elastic portions 50 (50-1, 50-2), and is the space for ensuring the movable area of ​​the movable body 40 supported by the elastic portions 50 (50-1, 50-2).

[0102] The bottom part 32b is rectangular, with an opening 36 formed in the center, and the core assembly 20 is located in the opening 36.

[0103] The core assembly 20 is fixed with a portion inserted into the opening 36. Specifically, the lower portion of the bobbin 26 and the lower part of the coil 22 of the core assembly 20 are inserted into the opening 36, so that the core 24 is located on the bottom part 32b in the side view.

[0104] Therefore, compared to the structure where the core assembly 20 is mounted on the bottom surface 32b, the length in the Z direction is shorter (thickness is thinner). In addition, a portion of the core assembly 20, here the bottom side portion, is fixed in a state of being embedded in the opening 36, so the core assembly 20 is firmly fixed in a state that makes it difficult to fall off from the bottom surface 32b.

[0105] The opening 36 has a shape corresponding to the shape of the core assembly 20. In this embodiment, the opening 36 is formed into a square shape. Thus, by positioning the core assembly 20 and the movable body 40 at the center of the electromagnetic actuator 10, the electromagnetic actuator 10 as a whole can be approximately square in top view. Alternatively, the opening 36 may also be rectangular (including square).

[0106] The iron core assembly 20, in cooperation with the elastic parts 50 (50-1, 50-2), causes the magnetic yoke 41 of the movable body 40 to vibrate (reciprocate linear motion in the Z direction).

[0107] In this embodiment, the core assembly 20 is formed into a rectangular plate shape, and magnetic pole portions 242 and 244 are arranged on the two sides separated in the long side direction (X direction) of the rectangular plate shape.

[0108] Magnetic pole sections 242 and 244 are separated by a gap G in the Z direction (refer to...) Figure 13 The magnetic pole portions 242 and 244 are positioned close to each other, facing the lower surfaces of the adsorbed surfaces 46 and 47 of the yoke 41. The opposing surfaces (opposing surfaces) 20a and 20b of the magnetic pole portions 242 and 244, which are the upper surfaces, are opposite to the lower surfaces of the adsorbed surfaces 46 and 47 of the yoke 41 in the vibration direction of the movable body 40.

[0109] The core assembly 20 is constructed by winding a coil 22 around the outer periphery of the core 24 via a bobbin 26. For example... Figure 13 as well as Figure 14 As shown, the core assembly 20 is fixed to the base portion 32 such that the winding shafts of the coil 22 face each other toward the mounting portions 32a that are separated in the base portion 32. In this embodiment, the core assembly 20 is disposed in the central portion of the base portion 32, specifically, in the central portion of the bottom portion 32b.

[0110] like Figure 13 As shown, the core assembly 20 is fixed to the bottom portion 32b such that the core 24 is parallel to the bottom portion 32b and positioned across the opening 36 on the bottom surface. The core assembly 20 is fixed by screws 29, which act as locking members, with the coil 22 and the portion wound around the coil 22 (core body 241) located within the opening 36 of the base portion 32 (see reference). Figures 12-14 ).

[0111] Specifically, with the coil 22 positioned within the opening 36 relative to the bottom portion 32b, the core assembly 20 is secured by tightening the screw 29 through the fixing hole 28 and the locking hole 33 of the bottom portion 32b (see reference). Figure 14The core assembly 20 and the bottom part 32b are joined together by screws 29 through the two sides of the opening 36 separated in the X direction and the magnetic pole parts 242, 244.

[0112] Coil 22 is a solenoid that generates a magnetic field when energized by the electromagnetic actuator 10. Coil 22, together with the iron core 24 and the movable body 40, constitute a magnetic circuit (electromagnetic circuit) that attracts and moves the movable body 40. This is achieved through the drive control units 110A to 110E (described later). Figures 17-21 A drive signal is supplied to coil 22, thereby supplying power to coil 22 and driving electromagnetic actuator 10.

[0113] The iron core 24 has an iron core body 241 with a coil 22 wound around it and magnetic poles 242 and 244 disposed at both ends of the iron core body 241 and energized by energizing the coil 22.

[0114] The core 24 can have any structure as long as it has a length such that the two ends become magnetic poles 242 and 244 when the coil 22 is energized. For example, it can be formed into a straight (I-type) flat plate, but in this embodiment, the core 24 is formed into an H-type flat plate in the top view. Compared with the I-type core, the H-type core is a shape in which the gap side is longer in the front-back direction (Y direction) at both ends of the core body 241 compared with the width of the core body on which the coil 22 is wound.

[0115] Therefore, with the H-type core, the magnetic resistance can be reduced compared to the I-type case, thus improving the efficiency of the magnetic circuit. Furthermore, in the pole portions 242 and 244, the coil 22 can be positioned simply by inserting the bobbin 26 between the portions extending from the core body 241, eliminating the need for additional positioning components for the bobbin 26 relative to the core 24.

[0116] The iron core 24 has magnetic pole portions 242 and 244 protruding from both ends of the plate-shaped iron core body 241 on which the coil 22 is wound, respectively, in a direction orthogonal to the winding axis of the coil 22.

[0117] The core 24 is a magnetic material, such as formed from silicon steel sheet, permalloy, ferrite, etc. Alternatively, the core 24 can also be made of electromagnetic stainless steel, sintered materials, MIM (metal injection molding) materials, laminated steel sheets, electro-galvanized steel sheets (SECC), etc.

[0118] The magnetic pole portions 242 and 244 are respectively arranged to protrude from the two openings of the coil 22 in the Y direction.

[0119] The magnetic poles 242 and 244 are energized by energizing the coil 22, attracting and moving the yoke 41 of the movable body 40 which is separated in the vibration direction (Z direction). Specifically, the magnetic poles 242 and 244 attract the attracted surfaces 46 and 47 of the movable body 40, which are arranged opposite each other via the gap G, by the generated magnetic flux.

[0120] The magnetic pole portions 242 and 244 are plate-like bodies extending along the Y direction, which is perpendicular to the iron core body 241 extending along the X direction. Since the magnetic pole portions 242 and 244 are longer in the Y direction, the opposing surfaces 20a and 20b opposite to the magnetic yoke 41 have larger areas compared to the structures formed at both ends of the iron core body 241.

[0121] In the magnetic pole portions 242 and 244, a fixing hole 28 is formed in the central part in the Y direction, and the base portion 32 is fixed by a screw 29 inserted into the fixing hole 28.

[0122] The spool 26 is configured to surround the core body 241 of the core 24. The spool 26 is formed, for example, of a resin material. This improves the reliability of the circuit by ensuring electrical insulation from other metal components (e.g., the core 24). By using a highly fluid resin, the formability is improved, allowing for a thinner wall thickness while ensuring the strength of the spool 26.

[0123] Furthermore, the bobbin 26 is assembled with the segmented bodies 26a and 26b in a manner that clamps the core body 241, thereby forming a cylindrical body that covers the periphery of the core body 241. In addition, the bobbin 26 has flanges at both ends of the cylindrical body, and the coil 22 is positioned on the outer periphery of the core body 241.

[0124] <40 movable bodies>

[0125] The movable body 40 is configured to be positioned opposite the core assembly 20, spaced apart by a gap G in a direction orthogonal to the vibration direction (Z direction). The movable body 40 is configured to reciprocate freely relative to the core assembly 20 in the vibration direction.

[0126] The movable body 40 has a magnetic yoke 41 and a movable body side fixing part 54 including elastic parts 50-1 and 50-2 fixed to the magnetic yoke 41.

[0127] The movable body 40 is configured to be suspended in a generally parallel manner (reference state position) so that it can move relative to the bottom part 32b in the separation direction (Z direction) via the elastic parts 50 (50-1, 50-2).

[0128] The magnetic yoke 41 is a plate-shaped body composed of magnetic materials such as electromagnetic stainless steel, sintered materials, MIM (metal injection molding) materials, laminated steel plates, and electro-galvanized steel plates (SECC). In this embodiment, the magnetic yoke 41 is formed by processing the SECC plate.

[0129] The magnetic yoke 41 is fixed to the elastic portions 50 (50-1, 50-2) of the adsorption surfaces 46 and 47 separated in the X direction, so as to separate a gap G in the vibration direction (Z direction) (see reference). Figure 13 It is suspended in a manner opposite to the iron core assembly 20.

[0130] The magnetic yoke 41 has a face fixing part 44 for mounting a movable panel 81 and adsorbed faces 46 and 47 arranged opposite to the magnetic pole parts 242 and 244.

[0131] In this embodiment, the magnetic yoke 41 is formed as a rectangular frame with an opening 48 in the center surrounded by a face fixing part 44 and adsorbed faces 46, 47.

[0132] The opening 48 is opposite to the coil 22. In this embodiment, the opening 48 is located directly above the coil 22, and the opening shape of the opening 48 is formed so that the coil 22 portion of the core assembly 20 can be inserted when the magnetic yoke 41 moves towards the bottom part 32b. By providing the magnetic yoke 41 with the opening 48, the overall thickness of the electromagnetic actuator can be reduced compared to the case without the opening 48.

[0133] Furthermore, by positioning the core assembly 20 within the opening 48, the yoke 41 is not positioned near the coil 22 compared to the spacing (gap G) between the magnetic pole portions 242, 244 of the core body 241 and the adsorption portions 46, 47 of the yoke 41. Therefore, the reduction in conversion efficiency caused by leakage flux from the coil 22 can be suppressed, enabling high output.

[0134] The face fixing part 44 has a fixing surface 44a for fixing the movable panel 81. The fixing surface 44a fixes the movable panel 81 in a position surrounding the iron core assembly 20 by means of a screw 84 that is inserted into the face fixing hole 42 as a locking member.

[0135] The adsorbed faces 46 and 47 are attracted by the magnetic poles 242 and 244 magnetized in the iron core assembly 20, and the fixed elastic parts 50 (50-1 and 50-2) are fixed.

[0136] The movable body side fixing parts 54 of the elastic parts 50-1 and 50-2 are fixed to the adsorbed surfaces 46 and 47 in a stacked state. A cutout 49 is provided on the adsorbed surfaces 46 and 47, which avoids the head of the screw 29 of the iron core assembly 20 when it moves toward the bottom surface 32b.

[0137] Therefore, even if the movable body 40 moves towards the bottom part 32b and the attracted parts 46 and 47 approach the magnetic pole parts 242 and 244, it will not come into contact with the screws 29 that fix the magnetic pole parts 242 and 244 to the bottom part 32b, thus ensuring the movable area of ​​the corresponding Z-direction magnetic yoke 41.

[0138] <Elastic Part 50>

[0139] The elastic parts 50 (50-1, 50-2) movably support the movable body 40 relative to the fixed body 30. The elastic parts 50 (50-1, 50-2) are elastically deformable and are configured as plates. The elastic parts 50 (50-1, 50-2) can be any component that supports the movable body 40 driven in one direction relative to the fixed body 30 in the vibration direction, and do not have to be plates, but can be elastic bodies of any shape and material.

[0140] The elastic portions 50 (50-1, 50-2) support the upper surface of the movable body 40 at the same height as the upper surface of the fixed body 30, or at a lower surface side than the upper surface of the fixed body 30 (in this embodiment, the upper surface of the core assembly 20), in a parallel manner. Furthermore, the elastic portions 50-1 and 50-2 have a shape that is centrally symmetrical with respect to the movable body 40, and are similarly formed in this embodiment.

[0141] The elastic part 50 is arranged in a manner that is approximately parallel to the magnetic pole parts 242 and 244 of the iron core 24 of the fixed body 30, with the gap G separating them. The elastic part 50 supports the lower surface of the movable body 40 at a position closer to the bottom part 32b than the upper surface of the iron core assembly 20, so that it can move freely in the vibration direction.

[0142] Here, as an example, the elastic part 50 is a leaf spring having a fixed body side fixing part 52, a movable body side fixing part 54, and a meandering elastic arm part 56 connecting the fixed body side fixing part 52 and the movable body side fixing part 54.

[0143] The elastic part 50 has a fixed body side fixing part 52 installed on the surface of the mounting part 32a, and a movable body side fixing part 54 installed on the surface of the adsorbed part 46, 47 of the magnetic yoke 41, so that the meandering elastic arm part 56 is installed parallel to the bottom part 32b.

[0144] The fixed part 52 on the fixed body side contacts the mounting part 32a and is fixed by screws 57, and the movable part 54 on the movable body side contacts the adsorbed parts 46 and 47 and is fixed by screws 58.

[0145] The meandering elastic arm 56 is an arm with a meandering shape. The meandering elastic arm 56 has a meandering shape, thereby ensuring the length of deformation required for the vibration of the movable body 40 is achieved between the fixed body side fixing part 52 and the movable body side fixing part 54 and on the plane orthogonal to the vibration direction (the plane formed in the X and Y directions).

[0146] In this embodiment, the meandering elastic arm 56 extends and folds back along the opposing direction of the fixed body side fixing portion 52 and the movable body side fixing portion 54, and the ends that engage with the fixed body side fixing portion 52 and the movable body side fixing portion 54 are formed at positions offset in the Y direction. The meandering elastic arm 56 is positioned symmetrically or linearly symmetrically with respect to the center point of the movable body 40.

[0147] Thus, the movable body 40 is supported on both sides by the meandering elastic arm 56 of the spring, which has a meandering shape, thereby enabling stress dispersion during elastic deformation. That is, the elastic part 50 allows the movable body 40 to move along the vibration direction (Z direction) without tilting relative to the iron core assembly 20, thereby improving the reliability of the vibration state.

[0148] Each elastic part 50 has at least two or more meandering elastic arms 56. As a result, compared with the case where there is only one meandering elastic arm 56, the stress during elastic deformation is dispersed, which can improve reliability and improve the balance of support for the movable body 40, thus improving stability.

[0149] The leaf spring serving as the elastic part 50 can be either non-magnetic or magnetic. In addition, the movable body side fixing part 54 of the elastic part 50 is arranged at a position opposite to or above the two ends (magnetic pole parts 242, 244) of the iron core 24 in the winding axis direction of the coil 22, and together with the iron core 24, it forms a magnetic circuit when the coil 22 is energized.

[0150] When the elastic part 50 is a magnetic material, the movable body-side fixing part 54 is fixed to the upper side of the adsorption surfaces 46 and 47 in a stacked state. This increases the thickness H of the adsorption surfaces 46 and 47 opposite to the magnetic pole parts 242 and 244 of the iron core assembly (see reference). Figure 13 The thickness of the elastic part 50 is the same as the thickness of the magnetic yoke 41. Therefore, the cross-sectional area of ​​the portion of the magnetic body opposite the magnetic poles 242 and 244 can be twice that of the other two parts. As a result, compared with the case where the leaf spring is non-magnetic, the magnetic circuit can be expanded, the reduction in characteristics caused by magnetic saturation in the magnetic circuit can be mitigated, and the output can be improved.

[0151] Furthermore, the electromagnetic actuator 10 may also include a detection unit that detects the amount of pressure applied by the user to the movable body 40 via the movable panel 81 and the protrusion 82, and generates vibration based on the amount of pressure applied and the input drive signal. For example, as the detection unit for detecting the amount of pressure applied, a sensor that detects the strain of the elastic part 50 may also be provided.

[0152] Figure 15 This is a diagram showing the magnetic circuit of the electromagnetic actuator 10. Furthermore, Figure 15 Therefore Figure 11 A perspective view of the electromagnetic actuator 10 with the AA line cut off; the unshown portion of the magnetic circuit also has the same magnetic flux flow M as the shown portion. Additionally, Figure 16 is a diagram illustrating the operation of the electromagnetic actuator 10, a cross-sectional view schematically showing the movement of the movable body 40 based on the magnetic circuit. In detail... Figure 16A The diagram shows the state in which the movable body 40 is held separate from the iron core assembly 20 by the elastic part 50. Figure 16B This is a diagram showing the state after the movable body 40 is attracted to the iron core assembly 20 by the magnetomotive force of the magnetic circuit.

[0153] Specifically, when coil 22 is energized, iron core 24 is energized and generates a magnetic field, with the two ends of iron core 24 becoming magnetic poles. For example, as Figure 15 As shown, in the iron core 24, the magnetic pole portion 242 is the N pole and the magnetic pole portion 244 is the S pole. Thus, a magnetic circuit with a magnetic flux flow M is formed between the iron core assembly 20 and the yoke 41. The magnetic flux flow M in this magnetic circuit flows from the magnetic pole portion 242 to the adsorption surface 46 of the opposing yoke 41, passes through the surface fixing portion 44 of the yoke 41, and reaches the magnetic pole portion 244 opposite to the adsorption surface 47 from the adsorption surface 47.

[0154] When the elastic part 50 is a magnetic body, the magnetic flux flowing through the attracted surface 46 (represented by the flow of magnetic flux M) passes through the attracted surface 46 of the magnetic yoke 41 and the movable body side fixing part 54 of the elastic part 50-1. Furthermore, the magnetic flux reaches the attracted surface 47 and the movable body side fixing part 54 of the elastic part 50-2 from both ends of the attracted surface 46 via the surface fixing part 44.

[0155] Therefore, according to the principle of an electromagnetic solenoid, the magnetic pole portions 242 and 244 of the core assembly 20 generate an attractive force F that attracts the attracted portions 46 and 47 of the yoke 41 by attraction. Thus, the attracted portions 46 and 47 of the yoke 41 are attracted by both the magnetic pole portions 242 and 244 of the core assembly 20. Furthermore, the movable body 40 containing the yoke 41 moves in the direction of F against the force of the elastic portion 50 (see reference). Figure 16A as well as Figure 16B ).

[0156] Furthermore, if the energization to coil 22 is removed, the magnetic field disappears, the attractive force F of movable body 40 of core assembly 20 disappears, and it moves back to its original position (moves in the -F direction) through the force of elastic part 50.

[0157] By repeatedly performing this action, the electromagnetic actuator 10 causes the movable body 40 to reciprocate linearly along the Z direction, thereby generating vibration in the Z direction.

[0158] The movable body 40 is moved back and forth in a straight line, and thus the movable panel 81 and the protrusion 82 fixed to the movable body 40 also move along the Z direction following the movable body 40.

[0159] In the electromagnetic actuator 10, a core assembly 20 having a core 24 wound with a coil 22 is fixed to a fixed body 30. The core assembly 20 is disposed within the opening 48 of the yoke 41 of a movable body 40, which is supported by an elastic portion 50 in a manner that allows it to move freely relative to the fixed body 30 in the Z direction.

[0160] Therefore, it is not necessary to drive the movable body 40 in the Z direction to generate magnetic force; instead, the components respectively provided on the fixed body 30 and the movable body 40 are arranged overlapping in the Z direction (for example, the coil 22 and the magnetic yoke 41, which is a magnetic body, are arranged opposite each other in the Z direction). Therefore, the thickness in the Z direction can be reduced as an electromagnetic actuator 10. In addition, by moving the movable body 40 linearly back and forth without using a magnet, vibration can be imparted to the movable panel 81 and the protrusion 82.

[0161] Thus, the support structure in the electromagnetic actuator 10 is simple, resulting in a simple design, space-saving design, and a thinner design for the electromagnetic actuator 10. Furthermore, since no magnets are used, the cost is reduced compared to vibration devices (so-called actuators) that use magnets.

[0162] Furthermore, the electromagnetic actuator 10 described above is an example of a structure that drives in one direction. As long as it is a structure that drives in one direction, the electromagnetic actuator 10 can be configured arbitrarily.

[0163] Furthermore, in the electromagnetic actuator 10, it is preferable that multiple elastic portions 50 are arranged in a position symmetrical with respect to the center of the movable body 40, but it is also possible to use one elastic portion 50 to vibrately support the movable body 40 relative to the fixed body 30. In this case, the structure becomes such that one elastic portion 50 supports the movable body 40 relative to the fixed body 30 in a direction opposite to at least one of the two ends of the movable body 40.

[0164] Furthermore, in the electromagnetic actuator 10, screws 57 and 58 are used to fix the base portion 32 to the elastic portion 50 and to fix the elastic portion 50 to the movable body 40. As a result, the elastic portion 50, which needs to be firmly fixed relative to the fixed body 30 and the movable body 40 for driving the movable body 40, can be mechanically and firmly fixed in a state that allows for reprocessing.

[0165] Alternatively, rivets can be used instead of screws 57 and 58 for fixing the base part 32 to the elastic part 50 and for fixing the elastic part 50 to the movable body 40. A rivet consists of a head and a body without threads. It is inserted into a component with a hole, and the opposite ends are riveted together to plastically deform it, thereby joining the components with holes together. Riveting can also be performed using, for example, a stamping machine or a special tool.

[0166] (Driving principle of electromagnetic actuator 10)

[0167] The driving principle of the electromagnetic actuator 10 will be briefly explained. The electromagnetic actuator 10 is driven by the supplied pulses according to the following motion equation (1) and circuit equation (2). In this embodiment, driving is performed by inputting short pulses, but it is also possible to drive it by generating arbitrary vibrations without using short pulses.

[0168] Furthermore, the movable body 40 in the electromagnetic actuator 10 reciprocates according to mathematical formulas (1) and (2).

[0169] [Mathematical Expression 1]

[0170]

[0171] m: mass [kg]

[0172] x(t): Displacement [m]

[0173] K f Thrust constant [N / A]

[0174] i(t): Current [A]

[0175] K sp Spring constant [N / m]

[0176] D: Attenuation coefficient [N / (m / s)]

[0177] [Mathematical Expression 2]

[0178]

[0179] e(t): Voltage [V]

[0180] R: Resistance [Ω]

[0181] L: Inductance [H]

[0182] K e Back electromotive force constant [V / (rad / s)]

[0183] The mass m [Kg], displacement x(t) [m], and thrust constant K in the electromagnetic actuator 10 f [N / A], current i(t) [A], spring constant K sp The values ​​of [N / m] and attenuation coefficient D [N / (m / s)] can be appropriately varied within the range satisfying mathematical formula (1). Additionally, the voltage e(t) [V], resistance R [Ω], inductance L [H], and back electromotive force constant K... e [V / (rad / s)] can be appropriately varied within the range that satisfies mathematical formula (2).

[0184] Thus, the electromagnetic actuator 10 consists of the mass m of the movable body 40 and the spring constant K of the metal spring (elastic body, in this embodiment, a leaf spring) that serves as the elastic part 50. sp Decide.

[0185] <Example 1 of the structure of a vibration transmission unit>

[0186] Figure 17 This is a diagram illustrating the vibration transmission unit 300A. Figure 17 The drive control unit 110A shown is an example of a drive circuit that controls the drive of the electromagnetic actuator 10.

[0187] The vibration transmission unit 300A includes: a vibration transmission device 100 (electromagnetic actuator 10), a drive control unit 110A, and a signal generation unit 120A.

[0188] The drive control unit 110A includes: a switching element 111 composed of a MOSFET (metal-oxide-semiconductor field-effect transistor), resistors R1 and R2, and SBD (Schottky Barrier Diodes).

[0189] The signal generation unit 120A, which is connected to the power supply voltage Vcc, is connected to the gate of the switching element 111. The switching element 111 is a discharge switching switch. The switching element 111 is connected to the electromagnetic actuator 10 and the SBD, and is also connected to the electromagnetic actuator 10, which is supplied with voltage from the power supply unit Vact.

[0190] With the above structure, the signal generation unit 120A functions as a voltage pulse application unit that applies voltage pulses to the switching element 111. The switching element 111, to which voltage pulses are applied from the signal generation unit 120A, functions as a current pulse supply unit that supplies current pulses to the electromagnetic actuator 10. This current pulse becomes the drive signal for driving the electromagnetic actuator 10. Therefore, based on the voltage pulse generated by the signal generation unit 120A, the switching element 111 can generate a current pulse and supply it to the electromagnetic actuator 10.

[0191] Although not shown in the figure, the vibration transmission unit 300A may also have a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), etc., for driving and controlling the electromagnetic actuator 10.

[0192] In this case, the CPU reads the program corresponding to the processing content from the ROM and expands it in the RAM. Working in conjunction with the expanded program, the drive control unit 110A and the signal generation unit 120A drive control of the electromagnetic actuator 10. For example, the CPU refers to various data stored in the ROM and the storage unit (not shown) such as signal patterns (e.g., signal patterns used to generate current pulses supplied to the electromagnetic actuator 10). Furthermore, the storage unit may be configured as, for example, a non-volatile semiconductor memory (so-called flash memory).

[0193] The drive control unit 110A and the signal generation unit 120A generate voltage pulses and current pulses according to the signal pattern read from the ROM, etc., and supply the generated current pulses to the electromagnetic actuator 10 (coil 22) to drive the movable body 40 in one direction of vibration.

[0194] By supplying a current pulse to the coil 22, the movable body 40 overcomes the force of the elastic part 50 and displaces in one direction of the vibration direction. During the supply of the current pulse, the displacement of the movable body 40 in one direction of the vibration direction continues.

[0195] Furthermore, by stopping the supply of the current pulse, that is, disconnecting the input of the current pulse to coil 22, the force causing the movable body 40 to displace in one direction (Z direction) of the vibration direction is released. The disconnection of the current pulse input means the timing of the voltage that generates the current pulse being disconnected. At the point when the voltage is disconnected, the current pulse is not completely disconnected but rather in a state of decay.

[0196] The movable body 40 moves and displaces in the opposite direction of vibration (positive Z direction) by the force accumulated in the elastic part 50 at its maximum displacement position in the pulling direction (negative Z direction). A stronger vibration is transmitted to the user via the movable body 40 moving in the positive Z direction.

[0197] In this way, the drive control unit 110A supplies one or more current pulses to the coil 22 according to the signal pattern, and adjusts the intensity and vibration mode of the vibration transmitted to the user. For example, the drive control unit 110A supplies a first current pulse (main drive pulse), and adjusts the vibration that remains and continues after the supply of the first current pulse stops by using subsequent current pulses (sub-drive pulses), thereby adjusting the intensity and vibration mode of the vibration of the movable body 40.

[0198] For example, as a secondary driving pulse, a braking pulse for shortening the decay period of vibration following the main driving pulse, and a decay supplement pulse for sustaining the decay period of vibration following the main driving pulse, can be used to adjust the intensity and mode of vibration.

[0199] In this structural example, for instance, if a signal pattern suitable for warning notifications is stored in a ROM or similar device, a stronger vibration can be transmitted to the user when a warning is needed, reliably delivering the warning. Furthermore, if a signal pattern suitable for massage, specifically a signal pattern suitable for the target area of ​​massage, is stored in a ROM or similar device, a signal pattern suitable for the target area can be selected to perform a massage tailored to the user's symptoms.

[0200] <Structural Example 2 of Vibration Transmission Unit>

[0201] Figure 18 This is a diagram illustrating the vibration transmission unit 300B. Figure 18 The drive control unit 110B shown is an example of a drive circuit that controls the drive of the electromagnetic actuator 10.

[0202] Figure 18 The vibration transmission unit 300B shown includes: a vibration transmission device 100 (electromagnetic actuator 10), a signal input unit 120B, and a drive control unit 110B sandwiched between the signal input unit 120B and the electromagnetic actuator 10. An AC signal, such as an AC signal from an audio source, is input to the signal input unit 120B.

[0203] The drive control unit 110B has a half-wave rectifier circuit that includes a rectifier diode 112 that is forward-biasedly inserted between the signal input unit 120B and the electromagnetic actuator 10.

[0204] Therefore, the drive control unit 110B, which functions as a half-wave rectifier circuit, performs half-wave rectification on the input AC signal and inputs it as a drive signal to the electromagnetic actuator 10. As described above, the electromagnetic actuator 10 drives the movable body 40, which is supported by the elastic part 50 in an elastically vibrating manner, in one direction, causing the movable body 40 to vibrate. Therefore, if the half-wave rectified drive signal is input to the electromagnetic actuator 10, the drive control unit 110B can generate vibration in the electromagnetic actuator 10 that is synchronized with the frequency (period) of the input AC signal.

[0205] Thus, by using rectifier diode 112, it is possible to generate vibrations synchronized with the frequency of the input AC signal at low cost. Figure 18 In the half-wave rectifier circuit shown, the rectifier diode 112 is inserted in the positive direction from the signal input section 120B to the electromagnetic actuator 10, thus achieving the above-mentioned effect with a simple structure.

[0206] <Structural Example 3 of Vibration Transmission Unit>

[0207] Figure 19 This is a diagram illustrating the vibration transmission unit 300C. Figure 19 The drive control unit 110C shown is an example of a drive circuit that controls the drive of the electromagnetic actuator 10.

[0208] Figure 19 The vibration transmission unit 300C shown includes: a vibration transmission device 100 (electromagnetic actuator 10), a signal input unit 120B, and a drive control unit 110C sandwiched between the signal input unit 120B and the electromagnetic actuator 10.

[0209] The drive control unit 110C includes a half-wave rectification protection circuit comprising a rectifier diode 112 and a freewheeling diode 113. In the drive control unit 110C, the rectifier diode 112 is forward-biased between the signal input unit 120B and the electromagnetic actuator 10. Furthermore, in the drive control unit 110C, the freewheeling diode 113 is inserted in parallel with the electromagnetic actuator 10 between the terminals of the electromagnetic actuator 10.

[0210] Therefore, the drive control unit 110C, which functions as a half-wave rectification protection circuit, performs half-wave rectification on the input AC signal and inputs it as a drive signal to the electromagnetic actuator 10. As a result, the drive control unit 110C can generate vibrations in the electromagnetic actuator 10 that are synchronized with the frequency of the input AC signal.

[0211] Furthermore, the freewheeling diode 113 functions as a protection circuit for the rectifier diode 112. Therefore, even if a back electromotive force is generated within the electromagnetic actuator 10, the rectifier diode can be protected from damage caused by high voltage application without applying a high voltage.

[0212] <Example 4 of the structure of a vibration transmission unit>

[0213] Figure 20 This is a diagram illustrating the vibration transmission unit 300D. Figure 20 The drive control unit 110D shown is an example of a drive circuit that controls the drive of the electromagnetic actuator 10.

[0214] Figure 20 The vibration transmission unit 300D shown includes: a vibration transmission device 100 (electromagnetic actuator 10), a signal input unit 120B, and a drive control unit 110D sandwiched between the signal input unit 120B and the electromagnetic actuator 10.

[0215] The drive control unit 110D has a half-wave rectification protection circuit including a rectifier diode 112, a freewheeling diode 113, and a resistor 114. In the drive control unit 110D, the rectifier diode 112 is inserted in the forward direction between the signal input unit 120B and the electromagnetic actuator 10. Furthermore, in the drive control unit 110C, a resistor 114 is connected between the freewheeling diode 113 and the terminals of the electromagnetic actuator 10, and is inserted in parallel with the electromagnetic actuator 10.

[0216] Therefore, the drive control unit 110D, which functions as a half-wave rectification protection circuit, performs half-wave rectification on the input AC signal and inputs it as a drive signal to the electromagnetic actuator 10. As a result, the drive control unit 110D can generate vibrations in the electromagnetic actuator 10 that are synchronized with the frequency of the input AC signal. Furthermore, the freewheeling diode 113 and resistor 114 function as a protection circuit for the rectifier diode 112.

[0217] According to the drive control unit 110D, unlike the protection circuit that only protects the rectifier diode 112 through the freewheeling diode 113, the resistor 114 can suppress the smooth flow of current. This prevents significant vibrations and avoids deterioration in the reproducibility of vibrations for AC signals. Furthermore, even when current is constantly flowing, the resistor 114 can prevent the device temperature from rising due to Joule heating.

[0218] In addition, by increasing the resistance value of resistor 114, the rise of the drive current of electromagnetic actuator 10 becomes steeper, and electromagnetic actuator 10 is able to generate, for example, a noticeable vibration corresponding to the input of an AC signal from an audio source.

[0219] <Example 5 of the structure of a vibration transmission unit>

[0220] Figure 21 This is a diagram illustrating the vibration transmission unit 300E. Figure 21 The drive control unit 110E shown is an example of a drive circuit that controls the drive of the electromagnetic actuator 10.

[0221] Figure 21 The vibration transmission unit 300E shown includes: a vibration transmission device 100 (electromagnetic actuator 10), a signal input unit 120B, and a drive control unit 110E sandwiched between the signal input unit 120B and the electromagnetic actuator 10.

[0222] The drive control unit 110E includes: rectifier diodes 112 and 115, resistor 114, and operational amplifier 116 as an amplification unit (operational amplifier).

[0223] In the drive control unit 110E, an operational amplifier 116 and a rectifier diode 112 connected to the output side of the operational amplifier 116 are inserted in the forward direction between the signal input unit 120B and the electromagnetic actuator 10. Additionally, in the drive control unit 110E, a resistor 114 is inserted in parallel with the electromagnetic actuator 10 between the terminals of the electromagnetic actuator 10. Furthermore, another rectifier diode 115, connected between the operational amplifier 116 and the rectifier diode 112, is inserted in parallel with the electromagnetic actuator 10. Thus, the drive control unit 110E is configured with an operational amplifier circuit including the operational amplifier 116.

[0224] According to the drive control unit 110E, since the operational amplifier 116 is used, it can be configured as an ideal diode, thus preventing the forward voltage drop in the structure that uses the rectifier diode 112. That is, even if the input AC signal has a small voltage component, it can be reproduced, i.e., a drive signal corresponding to the small voltage component is generated and supplied to the electromagnetic actuator 10. As a result, the drive control unit 110E can generate vibrations in the electromagnetic actuator 10 that are synchronized with the frequency of the input AC signal.

[0225] The vibration transmission units 300A to 300E described above enable increased output even in small products through efficient drive. Specifically, the use of the electromagnetic actuator 10 achieves cost reduction and a thinner form factor, while simultaneously transmitting strong vibrations to the user immediately.

[0226] Furthermore, in the vibration transmission units 300B to 300E shown in the above-described structural examples 2 to 5, the protrusion 82 described above can be used to transmit vibrations synchronized with the input AC signal (e.g., AC signal from an audio source) to the user.

[0227] Alternatively, in the above-described structural examples 2 to 5, the drive signal output from the drive control units 110B to 110E can be amplified based on the input AC signal and then input to the electromagnetic actuator 10. In this case, for example, an amplification circuit can be arranged between the drive control units 110B to 110E and the electromagnetic actuator 10.

[0228] Furthermore, in the above-described structural examples 2 to 5, the drive control units 110B to 110E can also be integrated with the electromagnetic actuator 10. When the drive control units 110B to 110E are separate from the electromagnetic actuator 10, the circuit design of the drive control units 110B to 110E is burdened, requiring a dedicated circuit structure. In contrast, when the drive control units 110B to 110E are integrated with the electromagnetic actuator 10, there is no need for a dedicated circuit design or circuit structure for the drive control units 110B to 110E as external circuitry. That is, if a circuit exists for inputting signals to the signal input unit 120B (e.g., a sound source circuit for inputting sound), no other circuitry is required. Therefore, for example, AC signals from an audio source can be directly input to the signal input unit 120B, improving ease of use.

[0229] [Installation example of vibration transmission unit]

[0230] Figure 22 This is a diagram showing an example of the installation of a vibration transmission unit. Figure 22 In the example, it indicates the use of Figure 18 The vibration transmission unit 300B shown is an example in which vibration transmission devices 100-1 and 100-2, configured similarly to vibration transmission device 100, are mounted on seat 400. Furthermore, it is not limited to... Figure 22 The vibration transmission unit 300B shown can also be the vibration transmission unit 300A or vibration transmission units 300C to 300E described above.

[0231] In addition, as mentioned above, the seat 400 can also be configured as a warning notification device or a massage device, but here, as an audio device, specifically, it is an example configured as an audio device for gaming.

[0232] The seat 400 has a vibration transmission unit 300B, which includes vibration transmission devices 100-1 and 100-2, a drive control unit 110B, and a signal input unit 120B. Here, as an example, vibration transmission device 100-1 is installed inside the backrest 412 of the seat 400, and vibration transmission device 100-2 is installed inside the seat portion 414 of the seat 400. However, the number of vibration transmission devices 100-1 can be one or more.

[0233] Seat 400 is a seat for the user to sit on while playing the game, and signal input unit 120B is connected to the game console main unit. When an audio signal of sound (music, sound effects) emitted according to the game content is input from the game console main unit to signal input unit 120B, drive control unit 110B performs half-wave rectification on the input audio signal and inputs it as a drive signal to vibration transmission devices 100-1 and 100-2. The drive signals input to vibration transmission devices 100-1 and 100-2 are input to each electromagnetic actuator 10, and the electromagnetic actuator 10 generates vibrations synchronized with the frequency (period) of the input audio signal.

[0234] Therefore, the seat 400 can transmit vibrations corresponding to the sounds emitted by the game content to the user sitting in it, giving the game a sense of control and immersion. In this way, the seat 400 can be configured as a motion-sensing simulator seat for experiencing games and an audio-visual seat for experiencing the sounds emitted by games.

[0235] exist Figure 22 In the structure shown, the seat 400 transmits vibrations to the user via the seat surface component. Vibration transmission devices 100-1 and 100-2 can also be mounted on the seat 400 with their protrusions 82 exposed from the backrest 412 and seat 414, in which case the seat 400 can directly transmit vibrations to the user.

[0236] The embodiments and variations of the present invention have been described above. Furthermore, the above description is an example of preferred embodiments of the present invention, and the scope of the present invention is not limited thereto. That is, the description of the structure and shape of each part of the above-described device is one example, and it is obvious that various modifications and additions can be made to these examples within the scope of the present invention.

[0237] For example, in this embodiment, the driving direction of the movable body 40 (movable panel 81, protrusion 82) of the electromagnetic actuator 10 is the Z direction, but it is not limited to this. For example, the above-mentioned efficient driving and vibration enhancement effects can also be obtained in the X or Y direction.

[0238] The entire contents of the specification, drawings and abstract contained in Japanese Patent Application No. 2021-109231, filed on June 30, 2021, are incorporated herein by reference.

[0239] Industrial utilization potential

[0240] The vibration transmission device of the present invention can be made low-cost and thin using an electromagnetic actuator, and can efficiently generate thrust suitable for transmitting vibrations to the user, and is useful for, for example, warning notification devices, audio devices, massage devices, etc.

[0241] Explanation of reference numerals in the attached figures

[0242] 10 Electromagnetic actuators

[0243] 11 Supporting pillars

[0244] 20 Iron core assembly

[0245] Opposite surfaces 20a and 20b

[0246] 22 coils

[0247] 24 Iron Core

[0248] 26 spools

[0249] 26a, 26b segmentation

[0250] 28 Fixing holes

[0251] 29 Screws

[0252] 30 Fixed body

[0253] 32. Base section

[0254] 32a Installation Section

[0255] 32b Bottom surface

[0256] 33 locking holes

[0257] 36. Opening

[0258] 40 movable bodies

[0259] 41 Magnetic yoke

[0260] 42 Facial Fixation Holes

[0261] 44 Facial fixation unit

[0262] 44a Fixed surface

[0263] 46, 47 Facial areas that were absorbed

[0264] 48 Opening

[0265] 49. Incision site

[0266] 50, 50-1, 50-2 Elastic Section

[0267] 52. Side fixing part of the fixed body

[0268] 54 Movable side fixing part

[0269] 56. Winding-shaped elastic arm

[0270] Screws 57 and 58

[0271] 60. Reception cover

[0272] 61 Opposite surfaces

[0273] 61a Inner Surface

[0274] 62 Opening

[0275] 63 Shock cushioning section

[0276] 64 Bottom

[0277] 64a corner

[0278] 65 Embedded Nut

[0279] 66 Flange portion

[0280] 67 Protective Cover

[0281] 70 Containment Base

[0282] 71 Fixing plate

[0283] 71a Inner Surface

[0284] 72. Prominent Setting Section

[0285] 73 Insertion section

[0286] 74 recess

[0287] 75 Through Hole

[0288] 76 ribs

[0289] 77 and 78 screws

[0290] 80 Transmission Department

[0291] 81 Movable Panel

[0292] 81a upper surface

[0293] 81b lower surface

[0294] 82 Protrusion

[0295] 82a Front end

[0296] 82b Flange

[0297] 83 and 84 screws

[0298] 85 spacers

[0299] 86 Shock cushioning section

[0300] Vibration transmission devices 100, 100-1, 100-2

[0301] 110A, 110B, 110C, 110D, 110E Drive Control Unit

[0302] 111 Switching element

[0303] 112 Rectifier Diode

[0304] 113 Freewheeling diode

[0305] 114 resistor

[0306] 115 rectifier diode

[0307] 116 Operational Amplifier

[0308] 120A Signal Generation Unit

[0309] 120B Signal Input Section

[0310] 241 Iron core body

[0311] 242 Magnetic pole section

[0312] 244 Magnetic pole section

[0313] Vibration transmission units 300A, 300B, 300C, 300D, 300E

[0314] Fixing holes 321 and 322

[0315] 400 seats

[0316] 412 Backrest

[0317] 414 Seat section.

Claims

1. A vibration transmission device, characterized in that, have: A vibration actuator has a plate-shaped fixed body and a movable body, and is driven to vibrate in one direction of the vibration direction of the movable body. The fixed body is equipped with a plate-shaped electromagnet consisting of a coil and an iron core wound with the coil. The movable body includes a plate-shaped magnetic yoke consisting of a magnetic body disposed opposite to the electromagnet in a direction intersecting the winding axis of the coil, and is elastically supported relative to the fixed body. The housing section houses the vibration actuator inside. The receiving portion has an opening that exposes at least a portion of the movable body, so that the movable body can come into contact with an object to which vibration is imparted. The vibration transmission device has a protrusion that protrudes from the movable body to the outside of the receiving portion through the opening. The vibration transmission device has a labyrinthine structure, which is disposed in the gap between the opening and the movable body. The labyrinthine structure is composed of a first flange and a second flange. The first flange is formed at the edge of the opening and protrudes toward the inside of the receiving portion. The second flange is formed at the outer periphery of the lower part of the protrusion and protrudes in the opposite direction to the protrusion direction of the first flange, and is configured to surround the first flange.

2. The vibration transmission device according to claim 1, characterized in that, The vibration transmission device has a limiting part that limits the range of motion of the movable body.

3. The vibration transmission device according to claim 2, characterized in that, The limiting part includes an impact mitigation part that mitigates impacts based on the movable body while limiting the movable body.

4. The vibration transmission device according to claim 3, characterized in that, The shock-absorbing part is a damper made of an elastomer.

5. The vibration transmission device according to claim 1, characterized in that, The vibration transmission device has a retractable cover that covers the opening from the outside of the receiving portion.

6. The vibration transmission device according to claim 1, characterized in that, The vibration actuator has: An elastic portion capable of elastic deformation supports the movable body relative to the fixed body in a direction opposite to at least one of its two ends. The magnetic yoke is positioned close to both ends of the iron core.

7. The vibration transmission device according to claim 6, characterized in that, The vibration transmission device includes a half-wave rectifier circuit that drives the vibration actuator.

8. A warning notification device, characterized in that, The vibration transmission device having any one of claims 1 to 7 The vibration transmission device imparts vibration to the target, thereby notifying the target of a warning.

9. An audio device, characterized in that, The vibration transmission device having any one of claims 1 to 7 The vibration transmission device imparts vibrations based on the sound source to the object.

10. A massage device, characterized in that, The vibration transmission device having any one of claims 1 to 7 The vibration is transmitted to the subject through the vibration transmission device to perform a massage.

Images