JP6526162B2 - Vibration generator - Google Patents

Description

  The present invention relates to a vibration generating device, and more particularly to a vibration generating device provided with a vibrator that is vibratably supported by a housing via an elastic support member.

  A vibration generator that is installed in electronic devices such as portable information terminals and game consoles and generates vibrations that are used to notify an incoming call on a portable information terminal or vibrations for tactile feedback in a game console is practical. It has been

  As a conventional vibration generator used for such a use, there exist some which were disclosed by patent document 1, for example. Hereinafter, the configuration of the conventional vibration generating device will be described with reference to FIG. FIG. 9 is an explanatory view showing the configuration of a conventional vibration generating device, and shows the configuration of a conventional vibration generating device 101 according to Patent Document 1. As shown in FIG. In FIG. 9, the X direction, the Y direction, and the Z direction respectively indicate three directions orthogonal to each other.

  As shown in FIG. 9, the conventional vibration generating apparatus 101 according to Patent Document 1 includes a housing 110, a vibrating body 120 housed in the housing 110, a support 130 for holding the vibrating body 120, and a vibrating body An elastic support member 133 for vibratably supporting the support 120 and the support 130, and a magnetic drive unit 140 for driving the vibrating body 120 using a magnetic force are provided. The support 130 is a box-like member formed by bending a springy metal plate, and has a support bottom 131 on which the vibrating body 120 is placed.

  The elastic support member 133 is a leaf spring formed integrally with the support 130 by bending the metal plate described above, and has a first elastic deformation portion 136 and a second elastic deformation portion 137. The first elastically deformable portion 136 extends along the X direction, is a portion where the fold is bent a plurality of times along the Z direction, and elastically deforms so as to expand and contract in the X direction. The second elastic deformation portion 137 is a plate-like portion extending to connect the support bottom portion 131 of the support 130 and one end of the first elastic deformation portion 136, and elastically deforms to bend in the Z direction. . The elastic support member 133 supports the vibrating body 120 so as to be capable of vibrating along the X direction and the Z direction by the first elastic deformation portion 136 and the second elastic deformation portion 137.

  The magnetic drive unit 140 includes an electromagnet disposed on the vibrating body 120 side and a permanent magnet disposed on the housing 110 side. The electromagnet comprises a magnetic core 121 disposed on the vibrating body 120 side, a magnetic yoke 122, and a coil 141 provided around the magnetic core 121, and generates an alternating magnetic field in a predetermined direction. There is. The permanent magnet is a permanent magnet 142 a and a permanent magnet 142 b disposed on the housing 110 side so as to be adjacent to the vibrating body 120 along the Y direction. And the magnetic drive part 140 is driving the vibrating body 120 along a X direction and a Z direction using the magnetic force between an electromagnet and a permanent magnet.

  Then, in the vibration generating device 101, the elastic support member 133 supports the vibrating body 120 so as to be able to vibrate along the X direction and the Z direction, and the magnetic drive unit 140 drives the vibrating body 120 along the X direction and the Z direction. Thus, the desired vibration is generated along the X and Z directions.

JP, 2012-125730, A

  In the conventional vibration generating device 101 according to Patent Document 1, the first elastic deformation portion 136 is a portion which extends along the X direction and is bent a plurality of times such that a fold line extends along the Z direction. When the first elastic deformation portion 136 has such a structure, the first elastic deformation portion 136 not only elastically deforms in the X direction due to expansion and contraction, but also elastically deforms in the Y direction due to bending. . Therefore, when the balance between the force of the permanent magnet 142a pulling the vibrating body 120 and the force of the permanent magnet 142b pulling the vibrating body 120 deviates, the vibrating body 120 is pulled toward the permanent magnet 142a side or the permanent magnet 142b side. , Vibrates at a position biased in the Y direction. As a result, there is a problem that the vibration operation of the vibration body 120 is likely to be unstable.

  The present invention has been made in view of the circumstances of the prior art as described above, and an object thereof is to provide a vibration generating device capable of stabilizing the vibration operation of a vibrating body.

  In order to solve this problem, the vibration generating device according to claim 1 comprises a housing, a vibrating body accommodated in the housing, and a first direction and a second direction orthogonal to each other. And a magnetic drive unit for driving the vibrating body using a magnetic force along the first direction and the second direction, the magnetic drive unit comprising: The housing side so as to be positioned on an extension of the vibrating body in the first direction disposed on the vibrating body side and a third direction orthogonal to the first direction and the second direction; A second magnetic field generating means disposed in the second magnetic field generating means, the elastic support portion being a plurality of bending portions in which a fold line is bent along the third direction, and the plurality of bending portions Flats extending from one of the folds to the other Characterized by comprising the leaf spring but is formed.

  In the vibration generating device having this configuration, the elastic support portion includes a plurality of bent portions in which the folds are bent along a third direction orthogonal to the first direction and the second direction, and the plurality of bent portions. And a flat portion extending from one to the other. The leaf spring having such a bending structure is characterized in that it is easily elastically deformed in the direction orthogonal to the fold, but is not easily deformed in the direction along the fold. Therefore, the elastic support portion can be easily elastically deformed along the first direction and the second direction, and the deformation of the elastic support portion along the third direction can be suppressed. As a result, it is possible to suppress the movement of the vibrating body along the third direction, and it is possible to stabilize the vibrating motion along the first direction and the second direction of the vibrating body.

  The vibration generating device according to claim 2 is characterized in that an opening is formed at a position avoiding the outer peripheral portion of the flat portion.

  In the vibration generating apparatus of this configuration, the first deformable portion is prevented from being easily deformed along the third direction by forming the opening at a position avoiding the outer peripheral portion of the flat portion. Elastic deformation can be facilitated along the direction and the second direction. Then, by adjusting the size of the opening, the ease of elastic deformation along the first direction and the second direction of the elastic deformation portion can be adjusted. As a result, it is possible to make it easy to vibrate the vibrating body along the first direction and the second direction while stabilizing the vibrating motion of the vibrating body, and to adjust the ease of vibrating the vibrating body. Become.

  The vibration generating device according to claim 3, wherein the elastic support portion is formed such that the dimension of the flat portion in the direction along the fold line is larger than the dimension of the flat portion in the extension direction. It is characterized by

  In the vibration generator of this configuration, the elastic deformation portion is formed by forming the elastic deformation portion such that the dimension of the flat portion along the fold line is larger than the dimension along the extension direction of the flat portion. The deformation along the third direction can be further suppressed, and the vibration operation of the vibrator can be further stabilized.

  The vibration generating device according to claim 4, wherein the elastic support portion has a second elastic coefficient different from a first elastic coefficient with respect to the first direction and a first elastic coefficient with respect to the second direction. And the magnetic drive unit drives the vibrator along the first direction at a first natural frequency corresponding to the first elastic coefficient and the mass of the vibrator. The vibrator is driven along the second direction at a second natural frequency corresponding to the second elastic coefficient and the mass of the vibrator.

  In the vibration generating apparatus of this configuration, the magnetic drive unit drives the vibrating body at the first natural frequency corresponding to the first elastic coefficient and the mass of the vibrating body to align the vibrating body in the first direction. It is possible to make it easy to vibrate and to make it difficult to vibrate along the second direction. Further, the magnetic drive unit makes the vibrating body easy to vibrate in the second direction by driving the vibrating body at a second natural frequency corresponding to the second elastic coefficient and the mass of the vibrating body, Vibration can be made difficult along the first direction. As a result, it is possible to realize desired vibration motion along the first direction and the second direction of the vibration body while stabilizing the vibration motion of the vibration body.

  The vibration generating apparatus according to claim 5, wherein the first magnetic field generating means is an electromagnet disposed on the vibrator side so as to generate an alternating magnetic field along the third direction, The second magnetic field generation means is a permanent magnet disposed on the housing side so as to face the electromagnet along the third direction, and the permanent magnet is associated with the first direction and the second direction. The magnetic poles are magnetized in such a manner that different magnetic poles are aligned along the direction of.

  In the vibration generator of this configuration, the electromagnet is attracted to and repelled from one of the permanent magnet side magnetic poles by the alternating magnetic field generated by the electromagnet, and repelled to and attracted from the other permanent magnetic pole. It is possible to make them fight. Then, by utilizing the magnetic force between such an electromagnet and the permanent magnet, the vibrator can be easily vibrated along the first direction and the second direction. Furthermore, even if a magnetic force acts between the permanent magnet and the electromagnet, the deformation of the elastically deformable portion along the third direction is suppressed, so that the vibration operation of the vibrator can be stabilized. Therefore, such a vibration generating device is suitable for driving the vibrator using the magnetic force between the electromagnet and the permanent magnet.

  According to the present invention, it is possible to provide a vibration generating device capable of stabilizing the vibration operation of the vibrating body.

It is a 1st explanatory view showing composition of a vibration generating device concerning an embodiment of the present invention. It is 2nd explanatory drawing which shows the structure of the vibration generator which concerns on embodiment of this invention. It is an explanatory view showing composition of a vibrator concerning an embodiment of the present invention. It is 1st explanatory drawing which shows the structure of the holding | maintenance part which concerns on embodiment of this invention, and an elastic support part. It is 2nd explanatory drawing which shows the structure of the holding | maintenance part which concerns on embodiment of this invention, and an elastic support part. It is an explanatory view showing composition of a permanent magnet concerning an embodiment of the present invention. It is an explanatory view showing the drive direction of the magnetic drive part concerning the embodiment of the present invention. It is an explanatory view showing a vibration direction of a vibrator concerning an embodiment of the present invention. It is an explanatory view showing the composition of the conventional vibration generating device.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 is a first explanatory view showing a configuration of a vibration generating device according to an embodiment of the present invention. FIG. 1A is a perspective view showing the appearance of the vibration generating device 1, and FIG. 1B is a perspective view of a state in which the lid 12 is removed from the vibration generating device 1. FIG. 2 is a second explanatory view showing the configuration of the vibration generating device according to the embodiment of the present invention, and is an exploded perspective view of the vibration generating device 1. FIG. 3 is an explanatory view showing the configuration of the vibrator according to the embodiment of the present invention, and is a perspective view of the vibrator 20. As shown in FIG.

  FIG. 4 is a first explanatory view showing the configuration of the holding portion and the elastic support portion according to the embodiment of the present invention. FIG. 4A is a perspective view of the holding portion 30 and the elastic support portion 40, and FIG. 4B is a front view of the holding portion 30 and the elastic support portion 40. FIG. 5 is a second explanatory view showing the configuration of the holding portion and the elastic support portion according to the embodiment of the present invention. FIG. 5 (a) is a side view of the holding portion 30 and the elastic support portion 40 as viewed from the right, and FIG. 5 (b) is a cross-sectional view corresponding to the A1-A1 cross section of FIG. 4 (b). It is. FIG. 6 is an explanatory view showing the configuration of the permanent magnet according to the embodiment of the present invention. 6 (a) is an exploded perspective view of the rear permanent magnet 70, and FIG. 6 (b) is a front view of the rear permanent magnet 70. As shown in FIG.

  FIG. 7 is an explanatory view showing the drive direction of the magnetic drive unit according to the embodiment of the present invention, and is an explanatory view when the magnetic core 61 is viewed from the front. 7 (a) shows the direction of the magnetic force exerted by the front permanent magnet 70 on the front end of the magnetic core 61 when the front end of the magnetic core 61 is magnetized to the N pole, and FIG. 7 (b) shows the magnetic core 61. 8 shows the direction of the magnetic force exerted by the front permanent magnet 70 on the front end of the magnetic core 61 when the front end of the magnetic head is magnetized to the south pole. In FIG. 7, solid arrows indicate the direction of the magnetic force exerted on the magnetic core 61.

  FIG. 8 is an explanatory view showing the vibration direction of the vibrator according to the embodiment of the present invention, and is an explanatory view when the vibrator 20, the holding portion 30, and the elastic support portion 40 are viewed from the front. FIG. 8A shows the vibration direction of the vibrating body 20 when the electromagnet 60 generates an alternating magnetic field having the same frequency as the first natural frequency, and FIG. The vibration direction of the vibrating body 20 is shown when an alternating magnetic field having the same frequency as the natural frequency of the vibration frequency is generated. In FIG. 8, the solid line arrow indicates the direction in which the vibrating body 20 easily vibrates, that is, the vibrating direction of the vibrating body 20, and the dotted arrow indicates the direction in which the vibrating body 20 hardly vibrates.

  In the drawings, X1 is left, X2 is right, Y1 is front, Y2 is back, Z1 is top, and Z2 is bottom. In the present embodiment, the left-right direction is the first direction in the present invention, the up-down direction is the second direction in the present invention, and the front-rear direction is the third direction in the present invention.

  First, the configuration of a vibration generating apparatus according to an embodiment of the present invention will be described using FIGS. 1 to 6. The vibration generating device 1 according to the embodiment of the present invention is a vibration generating device mounted on an electronic device such as a portable information terminal or a game machine. The vibration generated by the vibration generator 1 is used, for example, as a vibration for notifying an incoming call at a portable information terminal, a vibration for tactile feedback in a game machine, or the like. As shown in FIGS. 1 and 2, the vibration generating device 1 includes a housing 10, a vibrating body 20, a holding unit 30, two elastic supporting units 40, and a magnetic driving unit 50.

  The housing 10 is configured by combining the main body 11 and the lid 12 as shown in FIGS. 1 and 2. The main body portion 11 is a substantially rectangular box-shaped member formed by processing a metal plate, and has a housing portion 11 a which is a concave portion of a substantially rectangular parallelepiped concave downward from the upper end portion of the main body portion 11. The lid 12 is a substantially rectangular plate-like member formed by processing a metal plate, and is attached to the upper end of the main body 11 to cover the housing 11 a from above.

  The vibrating body 20 is a substantially rectangular parallelepiped member housed in the housing portion 11a of the housing 10, as shown in FIG. An electromagnet 60 which is a part of the magnetic drive unit 50 is disposed on the vibrating body 20.

  The holding portion 30 and the elastic support portion 40 are integrally formed by processing a metal plate having a spring property into a predetermined shape. The holding part 30 is a box-shaped part of a substantially rectangular parallelepiped, as shown to FIG. 4 and FIG. As shown in FIGS. 1 and 2, the lower portion of the vibrating body 20 is accommodated and held in the holding portion 30.

  As shown in FIGS. 4 and 5, the elastic support portion 40 is a plate spring formed by bending a metal plate extending in the left-right direction a plurality of times so that the folds extend in the front-rear direction. One of the two elastic support portions 40 extends leftward from the left end of the holding portion 30, and the other extends rightward from the right end of the holding portion 30. Hereinafter, the elastic supporting portion 40 extending leftward from the left end of the holding portion 30 is abbreviated as the elastic supporting portion 40 on the left side, and the elastic supporting portion 40 extending rightward from the right end of the holding portion 30 is The elastic support portion 40 is abbreviated.

  Further, as shown in FIG. 4 and FIG. 5, the elastic support portion 40 has three bent portions 41, two flat portions 42, and an attachment portion 43. The folding portion 41 is a portion folded along the fold line. The flat portion 42 is a substantially rectangular portion extending from one of the three bent portions 41 to another, and a side along the direction of the fold and a side along the extending direction have. The elastic support portion 40 has a dimension along the direction of the fold of the flat portion 42 (hereinafter referred to as the width dimension and abbreviation of the flat portion 42) and a dimension along the extension direction of the flat portion 42 (hereinafter referred to as the flat portion 42). Is formed to be larger than the length dimension and abbreviation). Further, a substantially rectangular opening 42 a is formed at a position avoiding the outer peripheral portion of the flat portion 42.

  In addition, the leaf spring of the bending structure like the elastic support part 40 has the characteristic of being easy to be elastically deformed in the direction (left and right direction and up and down direction) orthogonal to the fold. That is, such a leaf spring can be elastically deformed along the left-right direction by expansion and contraction, and can be elastically deformed along the up-down direction by bending. On the other hand, such a leaf spring is also characterized in that it is difficult to deform in the direction along the fold (in the front-rear direction), so it is suitable as a member for suppressing movement in the front-rear direction.

  Further, in the leaf spring having such a bending structure, the elastic deformation along the lateral direction due to expansion and contraction is more likely to be deformed as compared with the elastic deformation along the vertical direction due to the deflection. Therefore, assuming that the elastic modulus of the elastic supporting portion 40 in the left-right direction is a first elastic modulus, and the elastic modulus of the elastic supporting portion 40 in the vertical direction is a second elastic modulus, the first elastic modulus and the second elastic modulus Is different from.

  The attachment portion 43 is formed at the tip of the elastic support portion 40. At a predetermined position of the attachment portion 43, an engagement claw portion 43a is formed. Then, the elastic support portion 40 is attached to the housing 10 by the engagement claw portion 43 a engaging with the main body portion 11 of the housing 10. Then, the elastic support portion 40 elastically supports the vibrating body 20 along the lateral direction and the vertical direction by elastically deforming along the lateral direction and the vertical direction.

  The vibrating body 20 is supported by the elastic support portion 40 and vibrates in the left-right direction at a first natural frequency determined corresponding to the first elastic coefficient and the mass of the vibrating body 20. It vibrates up and down at a second natural frequency determined according to the elastic coefficient and the mass of the vibrating body 20. Then, since the first elastic coefficient and the second elastic coefficient are different values, the first natural frequency and the second natural frequency have different values.

  As shown in FIG. 2, the magnetic drive unit 50 includes an electromagnet 60 (first magnetic field generating means) disposed on the vibrating body 20 side, and two permanent magnets 70 (second And (2) magnetic field generating means). The electromagnet 60 has a magnetic core 61, a bobbin 62, a coil 63, and a terminal 64, as shown in FIG. The magnetic core 61 is a prismatic member made of a ferromagnetic material, and extends along the front-rear direction. The bobbin 62 is a cylindrical member made of an insulator, and covers the outer peripheral portion of the magnetic core 61. The coil 63 is formed by winding a wire around the outer periphery of the bobbin 62. The terminal 64 connects the both ends of the coil 63 and an external circuit (not shown) via a wiring member (not shown).

  The electromagnet 60 generates a magnetic field along the front-rear direction by passing an alternating current through the coil 63 to magnetize the front end portion and the rear end portion of the magnetic core 61 into different magnetic poles. Then, by setting the current flowing through the coil 63 as an alternating current, the magnetic field generated by the electromagnet 60 becomes an alternating magnetic field in which the direction of the magnetic field changes in accordance with the change in the direction of the current. When the front end of the magnetic core 61 is an S pole, the rear end is an N pole, and when the front end of the magnetic core 61 is an N pole, the rear end is an S pole. The timing at which the electromagnet 60 generates an alternating magnetic field and the frequency of the alternating magnetic field are controlled by the above-described external circuit.

  The permanent magnet 70 is a substantially rectangular plate-like magnet as shown in FIGS. 2 and 6. The front end portion of the housing 10 so that the two permanent magnets 70 are positioned on an extension in the front-rear direction of the magnetic core 61 of the electromagnet 60 of the oscillator 20 (hereinafter referred to as an extension of the oscillator 20 in the front-rear direction). It is disposed on the side and the rear end side respectively. Further, as shown in FIG. 6, the permanent magnet 70 is formed with a substantially rectangular magnetization surface 71 having sides extending in the left-right direction and the up-down direction. The magnetizing surface 71 of the permanent magnet 70 and the magnetic core 61 of the electromagnet 60 are opposed to each other in the front-rear direction.

  Further, the permanent magnet 70 is formed with a slit 72 extending obliquely from the upper left to the lower right of the magnetization surface 71. The magnetization surface 71 is divided into two magnetization regions 73 by the slits 72, and the two magnetization regions 73 are magnetized so as to have different magnetic poles. Thus, the permanent magnet 70 is magnetized such that different magnetic poles are aligned along the left-right direction and the up-down direction.

Hereinafter, the permanent magnet 70 disposed on the front end side of the housing 10 is referred to as the front permanent magnet 70, and the permanent magnet 70 disposed on the rear end side of the housing 10 is referred to Abbreviated as magnet 70. Of the two magnetization regions 73, the lower left region is taken as a first magnetization region 73a, and the upper right region is taken as a second magnetization region 73b. Then, in the front permanent magnet 70, the first magnetization area 73a is the S pole and the second magnetization area 73b is the N pole, and in the rear permanent magnet 70, the first magnetization area 73a is N The description will be made on the assumption that the pole is magnetized and the second magnetization region 73b is magnetized so as to be an S pole.

  Further, to the permanent magnet 70, a yoke 74, which is a member made of a ferromagnetic material, is attached to direct the magnetic field generated by the permanent magnet 70 to the electromagnet 60 side. The vibration generator 1 has such a configuration.

  Next, the operation of the vibration generator 1 will be described using FIGS. 7 and 8. As described above, the magnetic drive unit 50 includes the electromagnet 60 disposed on the vibrating body 20 side and the two permanent magnets 70 disposed on the housing 10 side. The electromagnet 60 generates an alternating magnetic field by passing an alternating current through the coil 63 to magnetize the front end portion and the rear end portion of the magnetic core 61. The permanent magnet 70 is disposed on the housing 10 so as to face the electromagnet 60 in the front-rear direction. A first magnetization region 73a and a second magnetization region 73b are formed on the magnetization surface 71 of the permanent magnet 70 so as to have different magnetic poles.

  Then, as shown in FIG. 7A, when the front end of the magnetic core 61 is magnetized to the N pole, the front end of the magnetic core 61 attracts the first magnetization region 73a of the permanent magnet 70 on the front side, 2 Repel each other with the magnetization area 73b. Although not shown, when the front end of the magnetic core 61 is magnetized to the N pole, the rear end of the magnetic core 61 is magnetized to the S pole, and the rear end of the magnetic core 61 is the first magnetization region of the permanent magnet 70 on the rear side. It attracts with 73a and repels with the second magnetization region 73b. As a result, a magnetic force acts on the vibrating body 20 in the left direction and the lower direction.

  Further, as shown in FIG. 7B, when the front end of the magnetic core 61 is magnetized to the S pole, the front end of the magnetic core 61 repels the first magnetization region 73a of the permanent magnet 70 on the front side, (2) Suction with the magnetization area 73b. Although not shown, when the front end of the magnetic core 61 is magnetized to the S pole, the rear end of the magnetic core 61 is magnetized to the N pole, and the rear end of the magnetic core 61 is the first magnetization region of the permanent magnet 70 on the rear side. It repulses with 73a and attracts with the second magnetization area 73b. As a result, a magnetic force acts on the vibrating body 20 in the rightward and upward directions.

  Thus, in the magnetic drive unit 50, the front end portion and the rear end portion of the magnetic core 61 of the electromagnet 60 attract the first magnetization region 73a of the permanent magnet 70 each time the direction of the magnetic field generated by the electromagnet 60 is reversed. It reciprocates or attracts with the second magnetization area 73b. And the magnetic drive part 50 is driving the vibrating body 20 to the left-right direction and the up-down direction using the magnetic force between such an electromagnet 60 and the permanent magnet 70. As shown in FIG.

  On the other hand, as described above, the vibrating body 20 is vibratably supported by the elastic support portion 40 along the lateral direction and the vertical direction. Then, the vibrating body 20 vibrates in the left-right direction at the first natural frequency determined corresponding to the first elastic coefficient and the mass of the vibrating body 20, and the second elastic coefficient and the mass of the vibrating body 20 are It vibrates up and down at a second natural frequency determined correspondingly.

  Therefore, as shown in FIG. 8A, when the electromagnet 60 generates an alternating magnetic field having the same frequency as the first natural frequency, the vibrating body 20 easily vibrates in the left-right direction, and the up-down direction Makes it difficult to vibrate. As a result, the vibrating body 20 vibrates in the left-right direction. Further, as shown in FIG. 8B, when the electromagnet 60 generates an alternating magnetic field having the same frequency as the second natural frequency, the vibrating body 20 easily vibrates in the vertical direction, and the horizontal direction Makes it difficult to vibrate. As a result, the vibrating body 20 vibrates in the vertical direction.

  The magnetic drive unit 50 uses the relationship between the frequency of the alternating magnetic field and the ease of vibration of the vibrating body 20 to align the vibrating body 20 in the left-right direction by the alternating magnetic field having the same frequency as the first natural frequency. The vibrating body 20 is vibrated in the vertical direction by an alternating magnetic field having the same frequency as the second natural frequency. Hereinafter, oscillating the vibrating body 20 along the lateral direction by the alternating magnetic field having the same frequency as the first natural frequency is abbreviated as driving the vibrating body 20 in the lateral direction with the first natural frequency, and The vibration of the vibrating body 20 along the vertical direction by the alternating magnetic field having the same frequency as the natural frequency of the above is abbreviated as driving the vibrating body 20 in the vertical direction at the second natural frequency.

  Next, a method of stabilizing the vibration operation of the vibration body 20 will be described. As described above, the leaf spring having the bending structure such as the elastic support portion 40 is characterized in that it is easily elastically deformed in the direction orthogonal to the fold, but is not easily deformed in the direction along the fold. Therefore, in the present embodiment, the deformation of the elastic support portion 40 in the front-rear direction is suppressed by utilizing the features of the leaf spring having such a bending structure. And thereby, the vibration body 20 suppresses the movement along the front-back direction, and the vibration operation along the left-right direction and the up-down direction of the vibration body 20 is stabilized.

  Moreover, in the leaf spring having such a bending structure, as the width dimension of the flat portion 42 is larger than the length dimension of the flat portion 42, deformation in the direction along the fold becomes more difficult. In the present embodiment, the elastic support portion 40 is formed so that the width dimension of the flat portion 42 is larger than the length dimension of the flat portion 42 by utilizing the characteristics of the leaf spring having such a bending structure. Thus, the deformation of the elastic support portion 40 in the front-rear direction can be easily suppressed.

  Moreover, in the leaf spring having such a bending structure, the outer peripheral portion of the flat portion 42 largely affects the difficulty of deformation in the direction along the fold of the elastic support portion 40, but the outer peripheral portion of the flat portion 42 is avoided. The effect of the ridge portion (portion closer to the central portion) is smaller than that of the outer peripheral portion of the flat portion 42. On the other hand, by forming the opening 42a in a portion other than the outer peripheral portion of the flat portion 42, the mechanical strength in the direction (left and right direction and vertical direction) orthogonal to the fold of the flat portion 42 is reduced. It can be made easy to elastically deform in the direction orthogonal to the fold.

  In the present embodiment, the opening 42a is formed at a position avoiding the outer peripheral part of the flat portion 42 by utilizing the feature of the leaf spring having such a bending structure, whereby the elastic support portion 40 extends in the front-rear direction. It is made easy to elastically deform along the left-right direction and the up-and-down direction, suppressing that it is easy to be deformed. Then, by adjusting the dimensions of the opening 42a, the easiness of elastic deformation of the elastic support portion 40 in the left-right direction and the up-down direction can be adjusted.

  Next, the effects of the present embodiment will be described. In the vibration generating device 1 of the present embodiment, the elastic support portion 40 of the elastic support portion 40 has a fold in the front-rear direction (third direction) orthogonal to the left-right direction (first direction) and the up-down direction (second direction). A plate in which a plurality of bent portions 41 bent along the two sides and two substantially rectangular flat portions 42 extending from one of the plurality of bent portions 41 to the other are formed It is a spring. The leaf spring having such a bending structure is characterized in that it is easily elastically deformed in the direction orthogonal to the fold, but is not easily deformed in the direction along the fold. Therefore, the elastic support portion 40 can be easily elastically deformed along the left-right direction and the vertical direction, and the deformation of the elastic support portion 40 along the front-rear direction can be suppressed. As a result, even if a force along the longitudinal direction is applied to the vibrating body 20 by the magnetic force between the electromagnet 60 (first magnetic field generating means) and the permanent magnet 70 (second magnetic field generating means), The movement along the front-rear direction can be suppressed, and the vibration operation along the left-right direction and the up-down direction of the vibrating body 20 can be stabilized.

  Further, in the vibration generating device 1 of the present embodiment, by forming the opening 42a at a position away from the outer periphery of the flat portion 42, the elastic supporting portion 40 is prevented from being easily deformed along the front-rear direction. In addition, the elastic deformation can be facilitated along the left-right direction and the up-down direction. Then, by adjusting the dimensions of the opening 42a, the ease of elastic deformation of the elastic support portion 40 in the left-right direction and the up-down direction can be adjusted. As a result, it is possible to make it easy to vibrate the vibrating body 20 along the horizontal direction and the vertical direction and to adjust the ease of vibrating the vibrating body 20 while stabilizing the vibrating operation of the vibrating body 20. .

  Further, in the vibration generating device 1 of the present embodiment, the width dimension (dimension in the direction along the fold) of the flat portion 42 is larger than the length dimension (dimension in the extension direction) of the flat portion 42 In addition, by forming the elastic support portion 40, the deformation of the elastic support portion 40 in the front-rear direction can be further suppressed, and the vibration operation of the vibrating body 20 can be further stabilized.

  Further, in the vibration generating device 1 according to the present embodiment, the magnetic drive unit 50 drives the vibrating body 20 at the first natural frequency corresponding to the first elastic coefficient and the mass of the vibrating body 20, thereby the vibrating body 20 can be made easy to vibrate along the left-right direction, and it can be made hard to vibrate along the up-down direction. In addition, when the magnetic drive unit 50 drives the vibrating body 20 at the second natural frequency corresponding to the second elastic coefficient and the mass of the vibrating body 20, the vibrating body 20 is easily vibrated along the vertical direction. Can be made difficult to vibrate along the left and right direction. As a result, it is possible to realize a desired vibration operation along the horizontal direction and the vertical direction of the vibration body 20 while stabilizing the vibration operation of the vibration body 20.

  Further, in the vibration generating device 1 of the present embodiment, the magnetic core 61 on the electromagnet 60 side is attracted to or repelled by the alternating magnetic field generated by the electromagnet 60 with the first magnetization region 73a which is one magnetic pole on the permanent magnet 70 side. The second magnetic region 73b, which is the other magnetic pole on the permanent magnet 70 side, can be repelled or attracted to each other. Then, by utilizing the magnetic force between the electromagnet 60 and the permanent magnet 70, the vibrating body 20 can be easily vibrated along the lateral direction and the vertical direction. In addition, even if the magnetic force acts between the permanent magnet 70 and the electromagnet 60, the deformation of the elastic support portion 40 in the front-rear direction is suppressed, so that the vibration operation of the vibrator 20 can be stabilized. Therefore, such a vibration generating device 1 is suitable for driving the vibrating body 20 using the magnetic force between the electromagnet 60 and the permanent magnet 70.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to said embodiment, It can change suitably, unless it deviates from the meaning of this invention.

  For example, in the embodiment of the present invention, as long as the predetermined function can be realized, the configuration of the vibration generating device 1 may be changed as appropriate. For example, two elastic support portions 40 may be directly attached to the vibrating body 20. In that case, the holding unit 30 is unnecessary. Moreover, the vibration generator 1 may further be equipped with members other than what was mentioned above.

  In the embodiment of the present invention, as long as a predetermined function can be realized, the material and the shape of the housing 10, the holding portion 30, and the elastic support portion 40 may be changed as appropriate. For example, the number of times of bending of the leaf spring which is the elastic support portion 40 may be a number other than that described above. In addition, the shape of the flat portion 42 and the shape of the opening 42 a may be shapes other than those described above. Alternatively, the elastic support portion 40 may be formed using a member different from the holding portion 30 and then combined with the holding portion 30.

  In the embodiment of the present invention, as long as a predetermined function can be realized, the configuration of the magnetic drive unit 50 may be changed as appropriate. For example, the permanent magnet 70 may be disposed on either the front end side or the rear end side of the housing 10. Further, as long as different magnetic poles are arranged along the left-right direction and the up-down direction, the shape of the slit 72 may be a shape other than that described above. Further, a plurality of permanent magnets, which are magnetized so as to have different magnetic poles, may be arranged in the housing 10 along the left-right direction and the up-down direction.

  In the embodiment of the present invention, if the predetermined function can be realized, the magnetic drive unit 50 drives the vibrating body 20 at a frequency other than the first natural frequency and the second natural frequency. I don't care. For example, the magnetic drive unit 50 drives the vibrating body 20 in the lateral direction at the first natural frequency and drives the vibrating body 20 in the vertical direction at the second natural frequency. The vibrating body 20 may be driven along the oblique direction at a frequency intermediate between the natural frequency of 1 and the second natural frequency.

DESCRIPTION OF SYMBOLS 1 vibration generator 10 case 11 main body 11a accommodation part 12 cover part 20 vibrator 30 holding part 40 elastic support part 41 bending part 42 flat part 42a opening 43 attachment part 43a engagement claw part 50 magnetic drive part 60 electromagnet 61 Magnetic core 62 Bobbin 63 Coil 64 terminal 70 Permanent magnet 71 Magnetizing surface 72 Slit 73 Magnetization area 73a 1st magnetization area 73b 2nd magnetization area 74 yoke

Claims (6)

And
A vibrator housed in the housing;
An elastic support that vibratably supports the vibrator along a first direction and a second direction orthogonal to each other;
A magnetic drive unit for driving the vibrator along the first direction and the second direction using a magnetic force;
The magnetic drive unit is
A magnetic field generator including a coil generating an alternating magnetic field along a third direction orthogonal to the first direction and the second direction;
A permanent magnet facing the coil,
The permanent magnet is
Has a rectangular magnetization surface,
Divided by the rectangular diagonal into a first magnetization region and a second magnetization region,
The first magnetization region and the second magnetization region are magnetized in different polarities ,
The elastic support portion is
A plurality of folds that are folded so that the folds follow the third direction;
Wherein the plurality of bent portions vibration generator according to claim Rukoto such a leaf spring which and are formed flat portions extending toward from one to another one of the.   The vibration generating apparatus according to claim 1, wherein the magnetic field generation unit is disposed on the vibrator, and the permanent magnet is disposed on the housing side.   The vibration generating device according to claim 1 or 2, wherein the magnetic field generating unit is an electromagnet including a magnetic core made of a ferromagnetic material and the coil wound around the magnetic core.   The vibration generating device according to any one of claims 1 to 3, wherein the diagonal line is disposed to intersect any of the first direction and the second direction.   The said rectangle is formed by two sides along the said 1st direction, and two sides along the said 2nd direction, The any one of the Claims 1 to 4 characterized by the above-mentioned. The vibration generator according to claim 1.   The vibration generating device according to any one of claims 1 to 5, wherein the permanent magnet has a plate shape, and a yoke is disposed on a surface on the back side of the magnetization surface.

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