JP2016101550A - Holder with vibrator and vibration generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holder with a vibrator having a relatively-high durability.SOLUTION: A holder 50 is used being attached to a housing of a vibration generator 1 for generating vibration by moving a vibrator 80. The vibrator 80 includes a magnet 60 and a yoke 70 disposed on top of the magnet 60. The holder 50 includes: the vibrator 80; vibrator holding parts 55a, 55b; fitting parts 51 (51a, 51b, 51c, 51d) for fitting to the housing; and arm parts 53 (53a, 53b, 53c, 53d). The arm parts 53 connect the fitting parts 51 and the vibrator holding parts 55a,55b, supporting the vibrator holding prats 55a, 55b in a displaceable manner at least horizontally relative to the fitting parts 51. The arm parts 53 have two v-shaped portions in a plan view that come closer to each other as approaching the vibrator holding parts 55a,55b.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a holder with a vibrator and a vibration generator, and more particularly to a holder with a vibrator and a vibration generator used in a vibration generator that generates vibration by causing a current to flow through a coil to move the vibrator.

  Various types of vibration generators that generate vibrations by moving a vibrator have a structure in which a vibrator including a magnet is supported by a housing via a spring portion. This type of vibration generator includes a coil disposed below the magnet so as to face the magnet. The vibrator moves while deforming the spring portion as the coil is energized to generate a magnetic field.

  Japanese Patent Application Laid-Open Publication No. 2004-228561 describes that in a vibration generator, a holder that is integrally formed with an arm portion as a spring portion and an elastic body is used as a holder for holding a vibrator. In this vibration generator, the arm portion is provided with a slit so that the vibrator easily vibrates.

JP 2014-140785 A

  By the way, in a vibration generator using an elastic spring provided with a slit as described in Patent Document 1, the stress generated in the arm portion when the vibrator vibrates is There is a problem that it concentrates on the root part of the department. In general, if the degree of stress concentration is high, there is a possibility that the stress concentration site may be cracked or damaged when the deformation operation is repeated for a long time.

  FIG. 10 is a plan view showing a holder of a conventional vibration generator.

  As shown in FIG. 10, the holder 850 has a vibrator 880 at the center, and support structures for holding the vibrator 880 are provided at four locations around the holder 850. That is, each support structure has an attachment portion 851 and an arm portion 853. The attachment portion 851 has a hole portion 852 into which a pin (not shown) on the housing side of the vibration generator is fitted.

  The vibrator 880 is connected to each of the four attachment portions 851 via the arm portion 853. The vibrator 880 can be displaced with respect to the attachment portion 851 while deforming the arm portion 853.

  A slit 854 is formed in the arm portion 853. By providing the slit 854, the vibrator 880 is easily displaced.

  In such a vibration generator using the holder 850, stress is concentrated on the boundary portion between the arm portion 853 and the mounting portion 851, the boundary portion between the arm portion 853 and the vibrator 880, the end portion of the slit 854, and the like. The above-mentioned problems may occur.

  The present invention has been made to solve such a problem, and an object thereof is to provide a holder with a vibrator and a vibration generator having relatively high durability.

  In order to achieve the above object, according to one aspect of the present invention, a holder with a vibrator that is attached to a housing of a vibration generator that generates vibration by moving a vibrator is disposed on a magnet and an upper portion of the magnet. A vibrator having a yoke, a vibrator holding portion for holding the vibrator, a mounting portion fixed to the housing, a mounting portion and the vibrator holding portion, and connecting the vibrator holding portion to the mounting portion. And an arm portion that supports at least a displacement in the horizontal direction, and the arm portion has two portions that are V-shaped in a plan view as they approach each other as they approach the vibrator holding portion.

  Preferably, at least one of the two portions of the arm portion has a curved shape in plan view.

  Preferably, each of the two portions of the arm portion is connected to another portion via an R curved surface.

  Preferably, each of the two portions of the arm portion has a substantially equal width dimension in plan view.

  Preferably, the attachment portion, the arm portion, and the vibrator holding portion are integrally formed using resin.

  Preferably, the vibrator holding part is provided with two parts, one holding one side end of the vibrator and the other holding the other side end of the vibrator. The attachment part is attached via the arm part.

  Preferably, the attachment portion, the arm portion, and the vibrator holding portion are connected as one member.

  According to another aspect of the present invention, a vibration generator is attached to the housing, the holder with the vibrator described above that holds the vibrator so as to be displaceable with respect to the housing, and the housing of the vibrator. A coil for generating a magnetic field for changing at least one of the position and the posture.

  Preferably, the holder with the vibrator is attached to the housing in a state where the arm portion extends from a natural state.

  According to these inventions, the arm portion has two portions that come closer to each other as they approach the vibrator holding portion and form a V shape in plan view. Therefore, it is possible to provide a vibrator-equipped holder and a vibration generator that have relatively high durability.

It is a perspective view which shows the vibration generator in one of the embodiment of this invention. It is a top view which shows a vibration generator. It is the sectional view on the AA line of FIG. It is a top view which shows a holder. It is a perspective view explaining attachment to the bottom plate of a holder. It is a partial enlarged plan view of a holder. It is a partial enlarged plan view which shows the arm part which concerns on the modified example of a holder. It is a figure explaining the simulation result of the stress which generate | occur | produces at the time of a deformation | transformation of an arm part. It is a top view which shows the holder of the vibration generator which concerns on the modified example of this Embodiment. It is a top view which shows the holder of the conventional vibration generator.

  Hereinafter, the vibration generator using the holder with a vibrator in the embodiment of the present invention will be described.

  The vibration generator has a structure in which a vibrator holding a magnet is supported by a housing so as to be displaceable with respect to the housing. A coil is disposed near the vibrator. The vibrator generates a magnetic field for changing at least one of a position and a posture with respect to the housing. The vibration generator is of a so-called linear type that generates a vibration force by reciprocating a vibrator according to excitation of a coil.

  [Embodiment]

  FIG. 1 is a perspective view showing a vibration generator 1 according to one embodiment of the present invention. FIG. 2 is a plan view showing the vibration generator 1. FIG. 3 is a cross-sectional view taken along line AA in FIG.

  In FIG. 1, the frame 20 is indicated by a two-dot chain line, and members inside the vibration generator 1 are indicated by a solid line so that the component layout of the vibration generator 1 can be easily understood. In FIG. 2, the holder 50 and the like that are originally hidden by the upper surface of the frame 20 are partially displayed with a solid line so that the component layout of the vibration generator 1 can be easily understood. In FIG. 2, the substrate 10 is indicated by a two-dot chain line, and the coil 40 is indicated by a one-dot chain line so as to be distinguished from other members.

  In the following description, regarding the vibration generator 1, the X-axis direction of the coordinates shown in FIG. 1 is the left-right direction (the direction positive on the X-axis when viewed from the origin is the right direction), and the Y-axis direction is the front-back direction (from the origin The direction that is positive on the Y axis when viewed is the rear direction, and the Z axis direction (the direction perpendicular to the XY plane in FIG. 2) is the vertical direction (the direction that is positive on the Z axis when viewed from the origin is the upward direction). is there.

  [Overall structure of vibration generator 1]

  As shown in FIG. 1, the vibration generator 1 roughly includes a substrate 10, a frame 20, a bottom plate 30, a coil 40, and a holder 50. In this embodiment, the holder 50 includes four attachment portions 51 (51a, 51b, 51c, and 51d), four arm portions 53 (53a, 53b, 53c, and 53d), and two vibrator holding portions (hereinafter referred to as “resonator holding portions”). , May simply be referred to as a holding portion.) 55 (55a, 55b). The holding unit 55 holds a vibrator 80 including a magnet 60, a yoke 70, and a weight 81.

  The vibration generator 1 as a whole is formed in a thin, substantially rectangular parallelepiped shape with relatively small vertical dimensions. The vibration generator 1 is, for example, a small one whose outer dimensions in the left-right direction and the front-rear direction are only about 10 millimeters to 20 millimeters. The vibration generator 1 has a box-shaped housing whose front, rear, left and right side surfaces and upper surface are constituted by a frame 20 and whose bottom surface is covered by a bottom plate 30.

  In the present embodiment, the frame 20 and the yoke 70 are, for example, soft magnetic materials such as iron.

  The substrate 10 is a flexible printed circuit board (FPC), and is disposed on the bottom plate 30 so as to be sandwiched between the coil 40 and the bottom plate 30. In other words, the substrate 10 is disposed so as to cover a part of the surface of the bottom plate 30. The substrate 10 is provided with a terminal connected to the coil 40, a terminal for connecting a power source and the like to the substrate 10, and the like. A portion of the substrate 10 where a terminal for connecting a power source or the like is provided is, for example, drawn out of the housing (the frame 20 and the bottom plate 30).

  The bottom plate 30 has a flat plate shape in the present embodiment. The bottom plate 30 is fitted into a part on the bottom surface side of the frame 20 and is fixed to the frame 20. The bottom plate 30 is made of a nonmagnetic material such as nonmagnetic stainless steel. Since the vibration generator 1 is surrounded by the frame 20 and the bottom plate 30 which are metal materials, the vibration generator 1 becomes easier to handle and the durability of the vibration generator 1 is also increased. The bottom plate 30 may be made of resin.

  The bottom plate 30 is provided with poles 21 (21a, 21b, 21c, 21d) disposed at the four corners in plan view. Each of the four poles 21 is a pin having a cylindrical shape. Each pole 21 is arranged so that the longitudinal direction thereof is the vertical direction, that is, the direction substantially perpendicular to the movement direction of the vibrator 80. Each pole 21 is made of a metal such as iron, but is not limited thereto, and may be formed using a resin, for example.

  The frame 20 as a whole has a rectangular parallelepiped shape with an open bottom. The frame 20 is formed, for example, by drawing an iron plate. In plan view, the corners of the frame 20 (parts between the side surfaces) are connected to each other with the R-plane portion interposed therebetween. As shown in FIG. 3, the frame 20 is disposed so as to cover the upper surface of the bottom plate 30 from above the bottom plate 30, and is attached to the bottom plate 30.

  The coil 40 is an air core coil that is an elliptical and flat plate as a whole, for example, formed by winding a conductive wire. That is, the coil 40 is a thin coil in which the dimension in the winding axis direction is smaller than the dimension in the direction orthogonal to the winding axis direction. The coil 40 may be formed by slicing a wound metal foil, or may be a laminate of sheet coils. The coil 40 may have a circular shape or a polygonal shape such as a quadrangular shape in plan view.

  As shown in FIG. 3, the coil 40 is disposed on the upper surface of the bottom plate 30 so that the winding axis direction is the vertical direction. As shown in FIG. 2, the coil 40 is disposed in the center of the vibration generator 1 so as to face the vibrator 80 in a plan view. The coil 40 and the bottom plate 30 are insulated. The two winding end portions of the coil 40 are both connected to terminals provided on the upper surface side of the substrate 10.

  The vibrator 80 includes a magnet 60, a yoke 70, and a weight 81. As shown in FIG. 3, the magnet 60 has a plate shape parallel to the horizontal plane. As shown in FIG. 2, the weight 81 is formed so as to surround the side portion of the magnet 60. The yoke 70 is attached to the upper surfaces of the magnet 60 and the weight 81. A hole is formed in the yoke 70, and the weight 81 and the magnet 60 are positioned with respect to the yoke 70 so that the protrusion provided on the weight 81 fits in the hole.

  The holder 50 is integrally formed with the yoke 70 by insert molding. The weight 81 is welded to the yoke 70, and the magnet 60 is fixed to the yoke 70 by being attracted to the yoke 70 by a magnetic attractive force. That is, the holder 50 and the vibrator 80 are integrally formed. In the present embodiment, the holder 50 is integrally formed using an elastic body (an example of resin). As the elastic body, for example, heat-resistant fluorine-based or silicon-based rubber can be used. By forming the holder 50 using such rubber, the heat resistance of the vibration generator 1 can be improved. The elastic body is not limited to this, and various types can be used. The holder 50 may be integrally formed by insert molding together with the magnet 60, the yoke 70, and the weight 81.

  FIG. 4 is a plan view showing the holder 50.

  In FIG. 4, the magnet 60 and the weight 81 of the vibrator 80 are not shown.

  As shown in FIG. 4, the holder 50 is attached to the casing of the vibration generator 1 as a vibrator-attached holder that holds the vibrator 80. That is, the holder 50 is attached to the frame 20 so as to fit into the pole 21. The holder 50 is configured such that the moving direction of the vibrator 80 is the left-right direction.

  Specifically, the attachment portion 51 is disposed at a position corresponding to each pole 21. Each attachment portion 51 is provided with a hole 52 (52a, 52b, 52c, 52d). The hole 52 has, for example, a cylindrical shape.

  As shown in FIG. 2, the attachment portion 51 is attached to the bottom plate 30 such that the pole 21 is fitted in the hole portion 52. A part of the outer peripheral surface of the attachment portion 51 is formed so as to be in contact with the inner peripheral surface along the inner peripheral surface of the frame 20 in a state where the holder 50 is attached to the bottom plate 30. Thereby, the attaching part 51 is reliably hold | maintained so that the position and attitude | position with respect to the flame | frame 20 or the baseplate 30 may not change.

  The holder 50 has a pair of holding portions 55a and 55b. The holding unit 55 a holds the left end of the vibrator 80, and the holding unit 55 b holds the right end of the vibrator 80. Two attachment portions 51 are connected to the holding portions 55a and 55b via two arm portions 53, respectively. One set of the arm portion 53 and the attachment portion 51 is arranged above and below each holding portion 55a, 55b.

  As shown in FIG. 4, each arm portion 53 is formed so that the longitudinal direction is the longitudinal direction. That is, the arm portions 53a and 53b are provided between the holding portion 55b that holds the right end portion of the vibrator 80 and the attachment portions 51a and 51b. On the other hand, the arm portions 53c and 53d are provided between the holding portion 55a that holds the left end portion of the vibrator 80 and the attachment portions 51c and 51d. Each arm portion 53 is connected to the holding portions 55a and 55b in the portion on the vibrator 80 side.

  Here, as shown in FIG. 3, projecting portions 72 a and 72 b projecting downward are provided on both the left and right end portions of the yoke 70. The protrusions 72a and 72b are formed by bending the left and right sides of the yoke 70 downward by approximately 90 degrees. The holder 50 and the vibrator 80 are molded in a state in which the protruding portions 72a and 72b are securely fitted into the holding portions 55a and 55b. The protrusions 72a and 72b are configured so that substantially the entire portion except for the bent boundary portion is buried in the holding portions 55a and 55b. In other words, the holding portions 55a and 55b are formed so as to wrap substantially the entire protruding portions 72a and 72b. It should be noted that the yoke 70 may be fixed to the holder 50 formed in advance by a method such as adhesion.

  FIG. 5 is a perspective view for explaining attachment of the holder 50 to the bottom plate 30.

  In the present embodiment, in the holder 50 in a natural state (for example, the state where the holder 50 is not attached to the bottom plate 30), the distance between the attachment portion 51a and the attachment portion 51b is the central axis between the pole 21a and the pole 21b. It is smaller than the distance between. In the natural state, the distance between the attachment portion 51c and the attachment portion 51d is smaller than the distance between the central axes of the pole 21c and the pole 21d. Therefore, as shown by the arrows in FIG. 5, when the holder 50 is attached to the frame 20, each arm portion 53 is slightly extended in the longitudinal direction from the natural state. That is, in a state where the holder 50 is attached to the frame 20, each arm portion 53 is in a state of being elastically deformed and extended from the natural state. The amount of extension is, for example, such that the interval between the attachment portions 51 is about 1.2 to 1.5 times that in the natural state, but is not limited thereto. In addition, each distance of the attaching part 51a and the attaching part 51d, and the attaching part 51b and the attaching part 51c may be comprised so that it may become smaller than the distance between the center axes of the corresponding pole 21. FIG.

  Thus, since the holder 50 with the vibrator 80 is attached to the frame 20 with each arm portion 53 extended from the natural state, the holder 50 is tensioned by the restoring force of the four arm portions 53. ing. At this time, since the vectors of the restoring force are different from each other, the vibration generator 1 is stabilized by being pulled by the arm portion 53, and there is no play. Thereby, when a magnetic attraction force is applied to the vibrator 80, the vibration generator 1 can promptly generate vibration as the vibrator 80 is displaced, and the vibration responsiveness increases.

  The holding portions 55a and 55b are arranged so that the protruding portions 72a and 72b are buried, and each arm portion 53 is connected to this portion. As described above, since the end portion of the yoke 70 is bent and the periphery thereof is fixed by the elastic body, the vertical position of the vibrator 80 does not change even if the arm portion 53 is pulled during attachment to the frame 20. As a result, the contact between the vibrator 80 and the coil 40 is less likely to occur, and the gap between the vibrator 80 and the coil 40 is reduced while maintaining the state in which the vibrator 80 can be reliably operated. The dimensions can be reduced. In addition, since the gap between the vibrator 80 and the coil 40 can be reduced, the force acting between the vibrator 80 and the coil 40 can be increased, and a large amount of vibration can be obtained.

  FIG. 6 is a partially enlarged plan view of the holder 50.

  In FIG. 6, the attachment part 51a, the arm part 53a, and the holding | maintenance part 55b part are shown among the holders 50. FIG. The configuration described below with respect to the arm portion 53a is the same in the other arm portions 53b, 53c, and 53d.

  As shown in FIG. 6, in the present embodiment, the arm portion 53a includes a first arm 56a on the outer side (side away from the vibrator 80) and a second arm on the inner side (side closer to the vibrator 80). It has two parts 57a. The first arm 56a and the second arm 57a are disposed so as to approach each other as they approach the holding portion 55b and to form a V shape in plan view.

  The first arm 56a and the second arm 57a are both connected to the holding portion 55b while intersecting on the lower side. Further, the first arm 56a and the second arm 57a are connected to the attachment portion 51a at positions spaced apart from each other on the upper side. Thus, a substantially triangular hole 54a is formed in the center of the arm 53a in plan view.

  Each of the first arm 56a and the second arm 57a is connected to another portion via an R curved surface. For example, the first arm 56a and the second arm 57a are connected to each other via a fillet 58i. The first arm 56a is connected to the attachment portion 51a via a fillet 58j. The second arm 57a is connected to the attachment portion 51a via a fillet 58k. As described above, the members are connected to each other through the R curved surface, so that the stress concentration at the corner or the like when the arm portion 53a is deformed is alleviated.

  Further, each of the first arm 56 a and the second arm 57 a has a curved surface 59. That is, each of the first arm 56a and the second arm 57a has a curved shape in plan view. A curved surface 59 formed on the first arm 56a smoothly connects the fillet 58i and the fillet 58j. The curved surface 59 formed on the second arm 57a smoothly connects the fillet 58k and the fillet 58i. In the present embodiment, the curvature of the inner peripheral surface portion of the hole portion 54a, which is deformed when the arm portion 53a is deformed, gradually changes. Therefore, stress concentration at the corners and the like when the arm portion 53a is deformed is alleviated. One of the first arm 56a and the second arm 57a may have a curved shape.

  FIG. 7 is a partially enlarged plan view showing an arm portion 153 a according to a modified example of the holder 50.

  The parts shown in FIG. 7 correspond to the parts shown in FIG.

  As shown in FIG. 7, each of the arm portions 153a includes a first arm 156a and a second arm 157a that are gently curved as a whole, whereby a hole portion 154a is formed.

  The first arm 156a and the second arm 157a are curved such that the distance between the first arm 156a and the second arm 157a increases as the distance between the first arm 156a and the second arm 157a approaches the holding portion 55b. In other words, the first arm 156a and the second arm 157a are curved in such a direction that the arm portion 53a appears to swell in plan view. Even in such a configuration, a stress concentration relaxation effect can be obtained.

  As shown in FIG. 6, the angle of the first arm 56a with respect to the holding portion 55b and the angle of the second arm 57a with respect to the holding portion 55b are substantially equal to each other in plan view. Thereby, when the arm part 53a deform | transforms, it becomes difficult to generate | occur | produce the stress bias between the 1st arm 56a and the 2nd arm 57a. In addition, the angle of both does not need to be completely the same, and should just make it as close as possible within the various restrictions regarding the layout of the vibration generator 1, etc.

  In a plan view, an angle formed by the first arm 156a and the second arm 157a (indicated by an angle α in FIG. 6) is preferably about 30 degrees, for example. If the angle is too small, it is difficult to obtain a stress concentration relaxation effect. On the other hand, if the angle is too large, when the vibrator 80 moves to the left and right, the difference in restoring force generated between the left and right arm portions 53 becomes large, and the operation of the vibration generator 1 may become unstable.

  In plan view, the width w1 of the first arm 156a and the width w2 of the second arm 157a are configured to be substantially the same. This makes it difficult for stress to be biased between the first arm 56a and the second arm 57a. If the angle of the first arm 56a relative to the holding portion 55b is different from the angle of the second arm 57a relative to the holding portion 55b, or if the first arm 156a and the second arm 157a are curved, The widths w1, w2, the ratio thereof, and the like can be adjusted according to the degree related to the stress concentration.

  As described above, in the present embodiment, the first arm 56 and the second arm 57 are arranged so that each arm portion 53 approaches each other as it approaches the holding portion 55 and has a V shape in plan view. A branched portion is provided. Therefore, the concentration of stress generated in the arm portion 53 when the arm portion 53 is deformed can be relaxed, and the maximum stress can be reduced. Therefore, even if the vibration generator 1 is used over a long period of time, the holder 50 is hardly damaged, and the life of the vibration generator 1 can be extended.

  The generation of stress in the structure according to the present embodiment was confirmed by performing a simulation.

  FIG. 8 is a diagram for explaining a simulation result of stress generated when the arm portion 53 is deformed.

  In FIG. 8, the upper part shows simulation results for an example of a conventional structure, and the lower part shows simulation results for the structure according to the present embodiment. In both simulations, conditions other than the shape of the arm part, such as the material and the movement amount of the vibrator part, are the same. In the drawing, the stress is higher in the portion having a higher density (black).

  In the upper stage, an example in which a slit 854 is formed in the arm portion 853 is shown. At this time, it can be seen that the stress is concentrated in the vicinity of the joint portion with the attachment portion 851 and in the vicinity of the joint portion with the holding portion 855, as indicated by an arrow A1. The maximum stress at this time was 2.3 MPa in the vicinity of the joint portion with the attachment portion 851.

  On the other hand, in the lower stage, as indicated by the arrow A2, the stress is the largest in the portion near the center in the longitudinal direction of the second arm 57, but is generated over a relatively wide range, and the maximum value is the example in the upper stage. Smaller than. The maximum stress was 2.11 MPa.

  In addition, an actual life test was performed on the vibration generator 1 employing the holder 50 having the arm portion 53 having the shape according to the present embodiment. As a result, while the intermittent drive time in the conventional structure with the slit 854 (two parallel spring structure) was about 250 h, the structure of the arm portion 53 according to the present embodiment (V-shaped) In the spring structure), the intermittent driving time is 500 hours or more.

  [Description of variant]

  The holder is not limited to one having a pair of structures in which the holding portions are separated as described above. For example, the holder may be configured such that the whole becomes one member.

  FIG. 9 is a plan view showing holder 250 of vibration generator 1 according to a variation of the present embodiment.

  As shown in FIG. 9, the holder 250 has an elastic body portion connected as one member. That is, in the holder 250, the holding part 255 is formed so as to surround the periphery of the vibrator 280 disposed in the center part. Each arm portion 53 is connected to the holding portion 255.

  Even in the case of the holder 250 having such a structure, as described above, each arm portion 53 has two portions that are V-shaped in plan view as they approach each other as they approach the holding portion 255. The same effects as described above can be obtained.

  [Others]

  You may comprise a vibration generator combining the feature point in each above-mentioned embodiment and its modification example suitably. For example, a double-sided board such as a glass epoxy board may be used instead of the flexible printed board. In this case, the double-sided board can be a part of the housing. Thus, when using a double-sided board, the manufacturing cost of a vibration generator can be reduced.

  The frame is not limited to iron, and may be configured using other materials. For example, it may be made of resin formed separately from the holder. The frame may not be provided with an upper surface or a bottom surface and may surround the holder in a plan view.

  The circuit board may not be provided. The bottom plate may be disposed only on a part of the bottom of the frame without covering the entire surface of the bottom of the frame. A plurality of coils may be provided, and a plurality of magnets may be provided. The position of the coil, the arrangement of the magnetic poles, and the like can be appropriately set so that the vibration generator can be operated.

  The number of attachment parts and the number of arm parts should just be two or more, respectively. The holder is not integrally molded, and may be configured by assembling a plurality of members.

  The configuration of the holder with the vibrator is not limited to the above. For example, the magnet may be attached to the yoke. Further, all components of the vibrator may be integrally formed.

  The holder may be attached to the frame.

  The holder is not limited to a single color molded one. For example, the attachment part, the holding part, and the arm part may be integrally formed by two-color molding using different materials.

  The attachment structure of the vibrator to the holder, that is, the attachment structure of the magnet and the yoke to the holder is not limited to insert molding. For example, it may have a structure in which a magnet and a yoke joined together by welding or the like are incorporated into an integrally molded holder and bonded or the like in a process different from the molding of the holder.

  The weight may be arranged at the center of the magnet. What is necessary is just to arrange | position a weight in the part which does not have so much influence on generation | occurrence | production of the force for a vibrator to move. Accordingly, it is possible to configure a vibration generator that can generate a large vibration force while reducing the size of the vibrator. The weight may not be provided.

  A coil is attached to the main board of a device that uses vibration, and a vibration generator that can drive the vibrator is configured by attaching a housing with a holder to the main board that is already mounted with the coil. May be. In other words, the vibration generator may be configured using a coil mounted on a substrate of another device.

  The configuration of the holder as described above is not limited to the holder for the vibration generator as described above, and can be widely applied. That is, the holder is configured such that the mover provided with the magnet (the portion serving as the vibrator in the above-described embodiment) can be displaced via the arm portion with respect to the portion supported by the frame. The Such a holder can be used in various other devices such as an actuator that is driven using magnetism and a device that is used by appropriately moving the mover in a predetermined direction. Even in an apparatus different from such a vibration generator, the same effects as described above can be obtained by configuring the holder as described above. For example, by providing a protrusion on the yoke portion of the holder, it is possible to limit the portion where the mover and the frame can come into contact with each other, and the device can be operated properly.

  The vibration generator is not limited to a small one as exemplified above. Large vibration generators having the same basic configuration may be configured, and even in this case, the same effects as described above can be obtained.

  The above embodiment should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 Vibration generator 10 Substrate 20 Frame (an example of a housing)
30 Bottom plate (example of housing)
40 Coil 50, 250 Holder 51 (51a, 51b, 51c, 51d) Mounting portion 53 (53a, 53b, 53c, 53d), 153a Arm portion 55 (55a, 55b), 255 Vibrator holding portion 56 (56a, 56b, 56c, 56d), 156a First arm 57 (57a, 57b, 57c, 57d), 157a Second arm 58i, 58j, 58k Fillet 59 Curved surface 60 Magnet 70 Yoke (magnetic plate)
80,280 vibrator 81 weight

Claims (9)

A vibrator-attached holder used by being attached to a housing of a vibration generator that generates vibration by moving a vibrator,
A vibrator having a magnet and a yoke disposed on the magnet;
A vibrator holding unit for holding the vibrator;
An attachment portion attached to the housing;
An arm part that connects the attachment part and the vibrator holding part and supports the vibrator holding part so as to be displaceable at least in the horizontal direction with respect to the attachment part;
The said arm part is a holder with a vibrator | oscillator which has two parts which mutually approach as they approach the said vibrator | oscillator holding | maintenance part, and make V shape by planar view.   The holder with a vibrator according to claim 1, wherein at least one of the two portions of the arm portion has a curved shape in a plan view.   Each of the two parts of the said arm part is a holder with a vibrator | oscillator of Claim 1 or 2 connected to the other site | part via the R curved surface.   The holder with a vibrator according to any one of claims 1 to 3, wherein each of the two portions of the arm portion has a substantially equal width dimension in a plan view.   The holder with a vibrator according to any one of claims 1 to 4, wherein the mounting portion, the arm portion, and the vibrator holding portion are integrally formed using a resin. The vibrator holding portion is formed as a pair of one holding one side end of the vibrator and one holding the other side end of the vibrator,
The holder with a vibrator according to any one of claims 1 to 5, wherein the attachment portion is attached to each of the vibrator holding portions via the arm portion.   The holder with a vibrator according to any one of claims 1 to 5, wherein the attachment portion, the arm portion, and the vibrator holding portion are connected as one member. The body,
The holder with a vibrator according to any one of claims 1 to 7, wherein the holder is attached to the housing and holds the vibrator so as to be displaceable with respect to the housing.
A vibration generator comprising: a coil that generates a magnetic field for changing at least one of a position and a posture of the vibrator with respect to the housing.   The vibration generator according to claim 8, wherein the holder with the vibrator is attached to the housing in a state where the arm portion is extended from a natural state.