WO2022124483A1 - Horizontal linear vibration generating device - Google Patents

Horizontal linear vibration generating device Download PDF

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Publication number
WO2022124483A1
WO2022124483A1 PCT/KR2021/003504 KR2021003504W WO2022124483A1 WO 2022124483 A1 WO2022124483 A1 WO 2022124483A1 KR 2021003504 W KR2021003504 W KR 2021003504W WO 2022124483 A1 WO2022124483 A1 WO 2022124483A1
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WO
WIPO (PCT)
Prior art keywords
spring
weight
housing
horizontal linear
linear vibration
Prior art date
Application number
PCT/KR2021/003504
Other languages
French (fr)
Korean (ko)
Inventor
이원국
정경양
유한호
김승기
Original Assignee
자화전자(주)
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Publication of WO2022124483A1 publication Critical patent/WO2022124483A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations

Definitions

  • the present invention relates to a horizontal linear vibration generator, and more particularly, to a horizontal linear vibration generator that generates vibration while a vibrator swings in a horizontal direction by the interaction of an electric field generated by a coil and a magnetic field by a magnet.
  • a linear vibration generator that generates vibration by linearly oscillating a weight.
  • a linear vibration generator basically uses a primary vibration system. More specifically, it operates on the principle of generating vibration by horizontally oscillating a weight by using a Lorenz force resulting from the interaction between the electric field generated by the coil and the magnetic field of the permanent magnet.
  • FIG. 1 is an exploded perspective view showing a typical example of a conventional linear vibration generator.
  • the conventional linear vibration generating device includes a stator 300 and a vibrator 400 .
  • the stator 300 and the vibrator 400 are relative concepts, and the vibrator 400 vibrates in the horizontal direction with respect to the stator 300, which is a relatively fixed body, and the vibrator 400 with respect to the stator 300.
  • a pair of left and right elastic bodies 500 elastically support horizontal vibration from both sides.
  • the stator 300 includes a coil 330 .
  • the coil 330 is electrically mounted on a lower substrate 320 coupled with the case 310, for example, a substrate, and the vibrator 400 is coupled to the weight 420 and the weight 420 to vibrate together.
  • one end and the other end of each of the pair of elastic bodies 500 are attached and fixed to the inner side surface of the case 310 and the opposite side side of the weight body 420 , respectively.
  • the coil 320 of the stator 300 is magnetized by an alternating current applied from the lower substrate 320, and the interaction between the magnetized coil 320 and the magnet 410 is performed. A force is generated, and due to the force, the vibrator 400 vibrates according to a frequency response characteristic predetermined by the weight of the weight body 420 and the elastic modulus of the elastic body 500 .
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2019-062627 (published on April 18, 2019)
  • the technical problem to be solved by the present invention is a horizontal linear vibration generating device capable of improving the durability of the elastic body and furthermore the reliability of the device by dispersing and reducing the stress applied to the portion where the weight and the elastic body are connected when the weight is vibrated is intended to provide.
  • a magnet disposed inside the housing to face the coil and spaced apart;
  • a weight body disposed so as to be oscillated in a first direction in the housing together with one of the coil and the magnet;
  • the elastic body The elastic body,
  • first and second leaf springs elastically supporting the vibration of the weight in the first direction from both sides;
  • each of the first and second leaf springs there is provided a horizontal linear vibration generating device in which bent portions are formed at at least three places along a second direction orthogonal to the first direction.
  • first spring foot and the bridge part may be disposed on the same plane, and the positions of the first spring foot and the bridge part in a third direction perpendicular to the first direction may be different from each other.
  • the coil may be mounted on a substrate on the upper surface of the bracket coupled to the housing, and the magnet may be coupled to the inside of the weight body at a position facing the coil and spaced apart.
  • each of the first and second leaf spring portions may preferably include a movable side bending portion formed at a boundary between the spring body of the first and second leaf spring portions and the first spring foot, and the opposite side of the bridge portion.
  • a fixed-side bent portion formed at a boundary between the second spring foot of the other end of the first and second leaf spring portions fixed to the inner surface of the housing and the spring body, and between the movable-side bent portion and the fixed-side bent portion It may be composed of an intermediate bent portion formed in the spring body of the.
  • the intermediate bent portion may be formed relatively close to the fixed-side bent portion compared to the movable-side bent portion, and may be bent at a predetermined angle with respect to a direction away from the weight.
  • the second spring feet of the other ends of the first and second leaf springs are interconnected from the opposite side of the bridge, so that the two second spring feet are on the same line without distortion. It may further include; a position alignment plate to hold it to be located in the.
  • the alignment plate is spot-welded to the second spring foot of each of the first and second leaf spring parts, and the second spring foot is spot-welded together with the second spring foot at a predetermined position on the inner surface of the housing. It can be fixed with (Spot Welding).
  • the horizontal linear vibration generator according to an embodiment of the present invention may further include an upper plate installed on the upper surface of the weight body.
  • the upper plate may include a top cover installed to be in contact with the upper surface of the weight body, and a side cover bent to surround one side portion of the weight body at one edge of the top cover.
  • the side cover may be coupled to cover the bridge part fixed to one side part of the weight from the outside.
  • the horizontal linear vibration generating device due to the unique configuration in which the main part of the elastic body (the leaf spring part) is bent several times, the rotation of the elastic body connecting the vibrator and the stator when the vibrator moves Tilt can be effectively suppressed, and thus noise generation and deterioration of vibration characteristics due to rotation or tilt of the elastic body can be prevented.
  • the other main parts of the elastic body (the part where the leaf spring and the bridge part are connected) are connected at a certain angle, the stress applied to the part where the weight and the elastic body are connected when the weight is vibrated is dispersed and reduced, As a result, there is an advantage in that the usable frequency band of the vibration generator can be widened (resonant frequency can be lowered) while improving the overall durability of the elastic body.
  • FIG. 1 is an exploded perspective view showing a typical example of a conventional linear vibration generator.
  • Figure 2 is a combined perspective view of a horizontal linear vibration generator according to an embodiment of the present invention.
  • FIG. 3 is an exploded perspective view of a horizontal linear vibration generator according to an embodiment of the present invention.
  • Figure 4 is a plan view of the horizontal linear vibration generator of Figure 2;
  • FIG. 5 is a plan view of the elastic body shown in FIG.
  • FIG. 7 is an enlarged perspective view of the elastic body shown in FIG. 3 viewed from another angle;
  • bridge 8 is a configuration to be located on a coaxial line on the same plane as the bridge part and the first spring foot (the bridge part and the first spring foot are configured in a straight line) and to be positioned on the same plane biaxially as in the present invention (bridge) Simulation data showing the stress distribution during vibration when the part and the connection part of the first spring foot are bent at a certain angle).
  • FIG. 9 is an exploded perspective view of a horizontal linear vibration generating device according to another embodiment of the present invention.
  • FIG. 10 is a perspective view of the vibrator coupled to the housing as viewed from the bottom;
  • the term "substantially” is intended to include tolerances, measurement errors, limits of measurement accuracy, and other factors known to those skilled in the art, without requiring that the recited properties, parameters or values be precisely achieved. It should be understood to the extent not to exclude the effect intended to be provided by the deviation, change, or characteristic.
  • the present embodiments are applied to “a device that receives signal feedback through vibration,” and the portable terminal refers to a portable user device.
  • the present embodiment includes a mobile phone, a palm sized personal computer (PC), a personal communication system (PCS), a personal digital assistant (PDA), and a portable PC.
  • PC palm sized personal computer
  • PCS personal communication system
  • PDA personal digital assistant
  • HPC Hand-held PC
  • smart phone wireless LAN (Local Area Network) terminal
  • laptop computer netbook
  • tablet personal computer non-mobile game console
  • VR device Virtual Reality
  • vehicles etc.
  • a first direction (x-axis direction in the drawing) of the direction terms used later means a direction in which the vibrator vibrates with respect to the stator in the drawing
  • the second direction (the y-axis direction in the drawing) means a direction orthogonal to the first direction.
  • the third direction (the z-axis direction in the drawing) indicates a direction perpendicular to the first direction on a plane perpendicular to the second direction.
  • FIG. 2 is a combined perspective view of a horizontal linear vibration generator according to an embodiment of the present invention
  • FIG. 3 is an exploded perspective view of the horizontal linear vibration generator according to an embodiment of the present invention
  • FIG. 4 is a plan view of the horizontal linear vibration generator of FIG. 2
  • FIG. 5 is a plan view of the elastic body shown in FIG. 3 .
  • the horizontal linear vibration generating device 1 is largely composed of a vibrator 10 and a stator 20 .
  • the vibrator 10 and the stator 20 are relative concepts.
  • the stator 20 means a part fixed to the vibrator 10
  • the vibrator 10 is a part vibrating with respect to the stator 20 .
  • the vibrator 10 is installed in the housing 30 constituting the outer appearance of the device and performs linear motion (vibration) in which the motion direction is periodically changed with respect to the first direction through interaction with the stator 20 .
  • an elastic body 40 is installed between the vibrator 10 and the housing 30 to elastically support the first direction linear motion of the vibrator 10 whose movement direction is periodically changed, that is, the vibration.
  • the housing 30 may be a rectangular parallelepiped in a planar shape having a length in the first direction longer than the width in the second direction, and may be a rectangular parallelepiped with an open lower portion, and the bracket 34 is coupled to the lower portion of the housing.
  • a mounting space is formed inside the housing 30 and the bracket 34 coupled thereunder, and the vibrator 10, the stator 20, and the elastic body 40 are mounted in the mounting space thus formed.
  • the stator 20 includes a substrate 22 mounted on a bracket 34 . And a coil 24 mounted on the substrate 22 so as to be located in the center of the mounting space.
  • the vibrator 10 is disposed so as to vibrate in the first direction in the mounting space of the upper portion of the substrate 22, and the vibrator 10 is spaced apart from the coil 24 by a predetermined distance and faces a magnet 14 and a weight It includes a sieve 16 .
  • a hole (or groove, 160) is formed in a predetermined size (a size corresponding to the magnet 14) as shown in the figure, and the magnet 14 is formed in the hole 160 part. ) can be firmly attached. Accordingly, when the coil 24 and the magnet 14 interact with the power applied to the coil 24 and the vibrator 10 vibrates in the first direction, the magnet 14 does not depart from the weight 16 . It may vibrate in the first direction together with the weight body 16 .
  • the coil 24 constitutes the stator 20 and the magnet 14 forms the vibrator 10 together with the weight 16 as an example.
  • a deformation in which the stator 20 is constituted and the coil 24 constitutes the vibrator 10 together with the magnet 14 is sufficiently possible.
  • the coil 24 may receive power from the substrate 22 on the bracket 34 described above through a flexible cable, or the elastic body 40 may be used as a conductor.
  • the elastic body 40 is a power applied to the coil 24 when the coil 24 and the magnet 14 interact to vibrate the vibrator 10 in which the movement direction is periodically changed with respect to the first direction, the vibrator 10 ) to elastically support the vibration in the first direction.
  • the modulus of elasticity of the elastic body 40 varies depending on its length, and therefore, by appropriately adjusting the length of the elastic body 40, the frequency of the vibrator 10 can be adjusted to match the target design frequency.
  • the elastic body 40 is composed of the first and second leaf spring parts 42L and 42R and the bridge part 44 that elastically support the vibration in the first direction of the weight body 16 from both sides. 16) may be a configuration surrounding the.
  • the first and second leaf spring parts 42L and 42R may be symmetrically formed with the weight body 16 interposed therebetween, and the bridge part 44 is fixed to one side of the weight body 16 .
  • the first spring feet 420L and 420R formed at one end of the first and second leaf springs 42L and 42R are interconnected.
  • Each of the first and second leaf spring portions 42L and 42R may have a configuration in which bent portions are formed at at least three places along a second direction orthogonal to the first direction, as shown in FIG. 5 .
  • the bending portions formed in each of the first and second leaf spring portions 42L and 42R are preferably a movable side bending portion 421 (a bending portion formed in a portion in contact with a weight) and a fixed side bending portion 424 ( a bent portion formed in a portion in contact with the housing), and an intermediate bent portion 423 therebetween.
  • the movable side bending portion 421 may be formed at a boundary portion between the spring bodies 422L and 422R of the first and second leaf spring portions 42L and 42R and the first spring feet 420L and 420R, and fixed.
  • the side bending portion 424 includes the first and second leaf spring portions 42L and 42R fixed to the inner surface of the housing 30 on the opposite side of the bridge portion 44, and second spring feet 425L and 425R of the other end and It may be formed at the boundary of the spring body (422L, 422R).
  • an intermediate bent portion 423 may be formed in the spring body 422L, 422R between the movable-side bent portion 421 and the fixed-side bent portion 424 .
  • the intermediate bent portion 423 is preferably, as illustrated in the drawing (Fig. 5), relatively close to the fixed-side bent portion 424 compared to the movable-side bent portion 421, and the The structure may be bent at a predetermined angle with respect to the direction away from the weight body 16 . That is, it may be configured to be bent at a predetermined angle to the opposite side (outside) of the weight 16 to form a curve point.
  • the vibrator 10 when bending portions are formed in at least three places in each of the first and second leaf spring portions 42L and 42R, the vibrator 10 is compared to the conventional configuration (see FIG. 1) in which only two bending portions are formed in one spring.
  • first direction the intended vibration direction
  • second direction and third direction the intended vibration direction
  • FIG. 6 is simulation data that predicts the result of the actual situation how much displacement occurs in the elastic body in an unintentional second direction by virtually performing vibration in the same simulated environment as the actual product. It is a simulation result when two bending parts are formed, and FIG. 6 (b) shows a simulation result when three bending parts are formed in an elastic body as in the embodiment of the present invention.
  • the second direction displacement which occurs unintentionally, adversely affects vibration efficiency as the displacement value increases. This is because, as the displacement in the second direction increases, the originally intended displacement in the first direction decreases to the extent that the vibration loss increases. In addition, the unintentional movement of the vibrator causes an impact with the housing, reducing the durability of the device and causing noise.
  • the vibration loss is reduced that much, the vibration efficiency is increased, and the burden on the spring is reduced as much as the displacement in the second direction is suppressed.
  • the probability of occurrence of an impact with the housing 30 according to the unintentional movement of the vibrator 10 is greatly reduced, which has a clear effect in terms of device durability and noise generation.
  • FIG. 7 is an enlarged perspective view of the elastic body shown in FIG. 3 viewed from another angle.
  • the aforementioned bridge portion 44 constituting the elastic body 40 is on the same plane as the first spring feet 420L and 420R of the first and second leaf spring portions 42L and 42R, respectively.
  • the first spring feet 420L and 420R and the bridge portion 44 of each of the first and second leaf spring portions 42L and 42R have different positions in the third direction perpendicular to the first direction. do. That is, the bridge part 44 may be connected to the first spring feet 420L and 420R in a structure bent at a predetermined angle (about 90 degrees) on the same plane.
  • the elastic body 40 when the bridge portion 44 is connected to the first spring feet 420L and 420R in a structure bent at a predetermined angle (about 90 degrees) on the same plane, the elastic body 40 according to the vibration of the vibrator 10 in the first direction. The effect of dispersing the stress to the bent part is exhibited. In other words, since the stress concentration at the point where the vibrator 10 and the elastic body 40, precisely, the weight 16 and the elastic body 40 contact (the point where welding is performed) is suppressed, the durability of the elastic body 40 is increased. can
  • bridge 8 is a configuration to be located on a coaxial line on the same plane as the bridge part and the first spring foot (the bridge part and the first spring foot are configured in a straight line) and to be positioned on the same plane biaxially as in the present invention (bridge)
  • bridge The simulation data showing the stress distribution during vibration when the part and the connection part of the first spring foot are bent at a certain angle) are shown.
  • a portion indicated by a red circle indicates a virtual welding point where the vibrator, precisely, the elastic body is spot welded to the weight body.
  • the bridge part and the first spring foot are configured to be located on the same plane on the biaxial line as in the present invention (the present invention in FIG. 8 as a case where the connection part of the bridge part and the first spring foot is bent at a certain angle), a specific boundary part (with a weight) It can be clearly seen that the stress generated on the inside based on the point at which the separation of the elastic body starts) is dispersed toward the connection part (bent part) of the first spring foot and the bridge part.
  • the degree of freedom of selection is increased in selecting welding points that can avoid stress concentration around the boundary, including the virtual welding point indicated by the red circle, as well as the selection of welding points that can avoid stress concentration.
  • the degree of freedom is increased, it is advantageous to secure the durability of the elastic body, and as a result, the overall durability of the product can be improved.
  • the bridge portion 44 and the first spring feet 420L and 420R of the first and second leaf spring portions 42L and 42R are connected in a structure bent at a predetermined angle (approximately 90 degrees). If the outer corner part (the part indicated by the oval in FIG. 7) is formed to be round or tapered with a certain curvature, the stress dispersion area is widened rather than simply bending the part, which is advantageous for stress dispersion and easy to select a welding location. becomes
  • FIG. 9 is an exploded perspective view of a horizontal linear vibration generating device according to another embodiment of the present invention
  • FIG. 10 is a perspective view of the vibrator coupled to the housing as viewed from the bottom.
  • the horizontal linear vibration generator according to another embodiment of the present invention shown in FIGS. 9 and 10 is an embodiment described above, except that it further includes a positioning plate 50 and an upper plate 60 .
  • the configuration is the same as that of the horizontal linear vibration generator. Therefore, a duplicate description of the same configuration as in the above-described exemplary embodiment will be omitted, and only a newly added configuration will be briefly reviewed.
  • the alignment plate 50 added to the horizontal linear vibration generating device 1 ′ is first and second from the opposite side of the bridge unit 44 .
  • the second spring feet (425L, 425R) of the other ends of the leaf spring parts (42L, 42R) are interconnected so that the two second spring feet (425L, 425R) are positioned on the same line (on the same line based on the first direction) without distortion. serves as a catcher. In addition, it serves to reduce the air gap (Air Gap) between the elastic body (40) and the vibrator (10).
  • the alignment plate 50 may be formed of a plate-shaped body having a predetermined length in the first direction, and the second spring feet ( In the state of primary spot welding to 425L and 425R, it is fixed by secondary spot welding at a predetermined position on the inner surface of the housing 30 together with the second spring feet 425L and 425R. can be
  • the primary spot welding point (the point at which the second spring feet 425L and 425R and the positioning plate 50 are welded) and the secondary spot welding point overlap or do not overlap each other when viewed from the second direction.
  • the two spot welding points overlap even a little, the possibility of damage to the housing 30 or the elastic body 40 increases due to stress concentration due to welding at the overlapping position.
  • the upper plate 60 applied to this embodiment is installed on the upper surface of the weight body 16 .
  • the upper plate 60 includes an upper cover 62 installed to be in contact with the upper surface of the weight body 16 , and one side portion of the weight body 16 at one edge of the upper cover 62 . It includes a bent side cover 64 , and the side cover 64 may be coupled to cover the bridge portion 44 fixed to one side portion of the weight body 16 from the outside.
  • the upper surface cover 62 of the upper plate 60 serves as a back yoke of the above-described magnet 14 mounted in the approximate center of the weight body 16 on the upper surface of the weight body 16 .
  • the effect of concentrating the electric field generated by the coil 24 to the magnet 14 side without loss is exhibited, and since the side cover 64 surrounds the bridge part 44, the overall durability of the elastic body 40 can be further increased. have.
  • the corner portions (the portions indicated by ovals in FIG. 9) of the second spring feet 425L and 425R of the first and second leaf spring portions 42L and 42R are rounded or tapered with a certain curvature. If configured, the stress dispersion area is widened rather than a form in which the part is simply bent, which is advantageous for stress dispersion and can ensure ease of welding position selection.
  • top cover 64 side cover

Abstract

A horizontal linear vibration generating device is disclosed. A horizontal linear vibration generating device according to the present invention comprises: a housing; a coil mounted in the housing; a magnet disposed in the housing and spaced to face the coil; a weight body disposed in housing to be able to vibrate in a first direction together with one of the coil and the magnet; and an elastic body which is disposed between the housing and the weight body and elastically supports the first directional vibration of the weight body, wherein the elastic body includes a first and a second leaf spring part for elastically supporting the first directional vibration of the weight body at both sides thereof, and a bridge part for mutually connecting first spring feet of ends of the first and the second leaf spring part, which are fixed to a side surface part of the weight body; and each of the first and the second leaf spring part has at least three bent parts formed along a second direction orthogonal to the first direction.

Description

수평형 리니어 진동발생장치Horizontal Linear Vibration Generator
본 발명은 수평형 리니어 진동발생장치에 관한 것으로, 특히 코일이 발생시키는 전기장과 자석에 의한 자기장의 상호 작용에 의하여 진동자가 수평방향으로 요동하면서 진동을 발생시키는 수평형 리니어 진동발생장치에 관한 것이다.The present invention relates to a horizontal linear vibration generator, and more particularly, to a horizontal linear vibration generator that generates vibration while a vibrator swings in a horizontal direction by the interaction of an electric field generated by a coil and a magnetic field by a magnet.
일반적으로 진동으로 신호 피드백을 받는 장치로 사용되는 진동 발생장치로서 편심 회전형 진동발생장치가 보편적으로 사용되어 왔다. 그러나 이 기술은 긴 수명을 보장하지 못하고 응답성이 빠르지 못하며 다양한 진동모드를 구현하는데 한계가 있다. 때문에 터치 조작 방식의 스마트폰이 급속도로 대중화되는 추세에서 수요자의 요구를 충족시키지 못하는 단점이 있다. In general, as a vibration generator used as a device for receiving signal feedback by vibration, an eccentric rotational vibration generator has been commonly used. However, this technology does not guarantee a long lifespan, does not respond quickly, and has limitations in implementing various vibration modes. Therefore, there is a disadvantage in that it cannot meet the needs of consumers in the trend of rapidly popularizing touch-operated smartphones.
이에 중량체를 선형적으로 요동시켜 진동을 발생시키는 선형 진동 발생장치가 개발되었다. 선형 진동 발생장치는 기본적으로 1차 진동계를 이용한다. 좀 더 구체적으로는, 코일이 발생시킨 전기장과 영구 자석의 자기장 간 상호 작용에 따른 힘(Lorenz force)을 이용하여 중량체를 수평방향으로 요동시켜 진동을 발생시키는 원리로 작동된다. Accordingly, a linear vibration generator that generates vibration by linearly oscillating a weight has been developed. A linear vibration generator basically uses a primary vibration system. More specifically, it operates on the principle of generating vibration by horizontally oscillating a weight by using a Lorenz force resulting from the interaction between the electric field generated by the coil and the magnetic field of the permanent magnet.
도 1은 종래 선형 진동 발생장치의 대표적인 일례를 도시한 분해 사시도이다.1 is an exploded perspective view showing a typical example of a conventional linear vibration generator.
도 1의 예시와 같이, 종래의 선형 진동발생장치는 고정자(300)와 진동자(400)를 포함한다. 고정자(300)와 진동자(400)는 서로 상대적인 개념으로서, 진동자(400)는 상대적으로 고정체인 상기 고정자(300)에 대해 수평 방향으로 진동을 하며, 고정자(300)에 대한 상기 진동자(400)의 수평 방향 진동을 좌우 한 쌍의 탄성체(500)가 양 옆에서 탄성 지지한다.As illustrated in FIG. 1 , the conventional linear vibration generating device includes a stator 300 and a vibrator 400 . The stator 300 and the vibrator 400 are relative concepts, and the vibrator 400 vibrates in the horizontal direction with respect to the stator 300, which is a relatively fixed body, and the vibrator 400 with respect to the stator 300. A pair of left and right elastic bodies 500 elastically support horizontal vibration from both sides.
고정자(300)는 코일(330)을 포함한다. 코일(330)은 케이스(310)와 결합하는 하부기재(320), 예컨대 기판 상에 전기적으로 실장되며, 진동자(400)는 중량체(420) 및 중량체(420)에 결합되어 함께 진동을 하는 복수의 자석(410)들로 구성된다. 그리고 한 쌍의 탄성체(500) 각각은 일단과 타단이 상기 케이스(310)의 내측면과 중량체(420)의 대향부 측면에 각각 부착 고정된다.The stator 300 includes a coil 330 . The coil 330 is electrically mounted on a lower substrate 320 coupled with the case 310, for example, a substrate, and the vibrator 400 is coupled to the weight 420 and the weight 420 to vibrate together. Consists of a plurality of magnets (410). In addition, one end and the other end of each of the pair of elastic bodies 500 are attached and fixed to the inner side surface of the case 310 and the opposite side side of the weight body 420 , respectively.
이러한 종래 선형진동발생장치는, 하부 기재(320)로부터 인가된 교류 전류에 의해 고정자(300)의 상기 코일(320)이 자화되고, 자화된 코일(320)과 상기 자석(410) 간 상호 작용으로 힘이 발생하며, 그 힘으로 인해 중량체(420)의 중량과 탄성체(500)의 탄성 계수에 의해 미리 정해진 주파수 응답 특성에 따라 진동자(400)가 진동을 하게 된다. In this conventional linear vibration generating device, the coil 320 of the stator 300 is magnetized by an alternating current applied from the lower substrate 320, and the interaction between the magnetized coil 320 and the magnet 410 is performed. A force is generated, and due to the force, the vibrator 400 vibrates according to a frequency response characteristic predetermined by the weight of the weight body 420 and the elastic modulus of the elastic body 500 .
이와 같은 선형진동발생장치는 장치 구동 시 특정 방향으로 반복해서 탄성 변위되는 탄성체(500)의 특성 상 구조적으로 진동자(400)에 탄성체(500)가 연결된 지점 및 그 주변에 가장 많은 응력이 집중된다. 이로 인해 일정 시간이 경과하면 해당 지점에 피로가 누적되어 탄성체(500)가 소성 변형되거나 파손되는 등 내구성이 떨어지는 문제가 있다.In such a linear vibration generator, the most stress is concentrated in and around the point where the elastic body 500 is connected to the vibrator 400 and structurally due to the characteristic of the elastic body 500 that is repeatedly elastically displaced in a specific direction when the device is driven. Due to this, when a predetermined time elapses, fatigue is accumulated at the corresponding point, and the elastic body 500 is plastically deformed or damaged, and thus durability is deteriorated.
즉 종래 선형진동발생장치는 반복된 탄성 변위에 따른 피로 누적, 좀 더 구체적으로는 응력 집중에 따른 피로 누적으로 상기 연결 지점 및 그 주변에서 피로 파괴가 일어나기 쉽고, 특히 진동자(400)에 탄성체(500)가 연결된 지점에는 용접에 의한 잔류 응력까지 더해져 응력 집중 현상이 더욱 크게 발생함으로써 내구성이 더욱 크게 떨어지는 문제가 있다.That is, in the conventional linear vibration generator, fatigue failure easily occurs at and around the connection point due to fatigue accumulation according to repeated elastic displacement, more specifically, fatigue accumulation according to stress concentration, and in particular, the elastic body 500 in the vibrator 400 . ) is connected to the residual stress due to welding, and the stress concentration phenomenon is further increased, which further reduces durability.
[선행기술문헌][Prior art literature]
[특허문헌][Patent Literature]
(특허문헌 1) 일본공개특허 제2019-062627호 (2019.04.18. 공개)(Patent Document 1) Japanese Patent Application Laid-Open No. 2019-062627 (published on April 18, 2019)
본 발명이 해결하고자 하는 기술적 과제는, 중량체 진동 시 상기 중량체와 탄성체가 연결된 부분에 걸리는 응력을 분산 및 경감시켜 탄성체의 내구성, 나아가서는 장치의 신뢰성을 향상시킬 수 있는 수평형 리니어 진동발생장치를 제공하고자 하는 것이다.The technical problem to be solved by the present invention is a horizontal linear vibration generating device capable of improving the durability of the elastic body and furthermore the reliability of the device by dispersing and reducing the stress applied to the portion where the weight and the elastic body are connected when the weight is vibrated is intended to provide.
과제를 해결하기 위한 수단으로서 본 발명의 실시 예에 따르면, According to an embodiment of the present invention as a means for solving the problem,
하우징;housing;
상기 하우징의 내부에 실장되는 코일;a coil mounted inside the housing;
상기 하우징의 내부에 상기 코일과 대면하도록 이격 배치되는 자석;a magnet disposed inside the housing to face the coil and spaced apart;
상기 코일과 자석 중 하나와 함께 상기 하우징 내에 제1 방향으로 진동 가능하게 배치되는 중량체;a weight body disposed so as to be oscillated in a first direction in the housing together with one of the coil and the magnet;
상기 하우징과 중량체 사이에 설치되며 상기 중량체의 제1 방향 진동을 탄성 지지하는 탄성체;를 포함하며, Includes; an elastic body installed between the housing and the weight and elastically supporting the vibration of the weight in the first direction;
상기 탄성체는, The elastic body,
상기 중량체의 제1 방향 진동을 양측에서 탄성 지지하는 제1, 제2 판 스프링부와, first and second leaf springs elastically supporting the vibration of the weight in the first direction from both sides;
상기 중량체의 일 측면부에 고정되는 상기 제1, 제2 판 스프링부 일단의 제1 스프링 발을 상호 연결하는 브리지부로 구성되고,and a bridge part for interconnecting first spring feet of one end of the first and second leaf spring parts fixed to one side part of the weight body;
상기 제1, 제2 판 스프링부 각각에는 상기 제1 방향과 직교하는 제2 방향을 따라 적어도 세 군데에 굽힘부가 형성되는 수평형 리니어 진동발생장치를 제공한다. In each of the first and second leaf springs, there is provided a horizontal linear vibration generating device in which bent portions are formed at at least three places along a second direction orthogonal to the first direction.
여기서, 상기 제1 스프링 발과 브리지부가 동일 평면 상에 배치되되, 상기 제1 스프링 발과 브리지부는 상기 제1 방향과 수직한 제3 방향의 위치가 서로 다를 수 있다.Here, the first spring foot and the bridge part may be disposed on the same plane, and the positions of the first spring foot and the bridge part in a third direction perpendicular to the first direction may be different from each other.
또한, 상기 코일은 하우징과 결합하는 브라켓 상면의 기판 상에 실장되고, 상기 자석은 상기 코일과 이격되어 대면하는 위치의 상기 중량체 내측에 결합될 수 있다.In addition, the coil may be mounted on a substrate on the upper surface of the bracket coupled to the housing, and the magnet may be coupled to the inside of the weight body at a position facing the coil and spaced apart.
또한, 상기 제1, 제2 판 스프링부 각각의 상기 굽힘부는 바람직하게, 상기 제1, 제2 판 스프링부의 스프링 바디와 상기 제1 스프링 발의 경계부에 형성되는 가동측 굽힘부와, 상기 브리지부의 반대편에서 상기 하우징의 내측면에 고정되는 상기 제1, 제2 판 스프링부 타단의 제2 스프링 발과 상기 스프링 바디의 경계부에 형성되는 고정측 굽힘부와, 상기 가동측 굽힘부와 고정측 굽힘부 사이의 상기 스프링 바디에 형성되는 중간 굽힘부로 구성될 수 있다.In addition, the bending portion of each of the first and second leaf spring portions may preferably include a movable side bending portion formed at a boundary between the spring body of the first and second leaf spring portions and the first spring foot, and the opposite side of the bridge portion. a fixed-side bent portion formed at a boundary between the second spring foot of the other end of the first and second leaf spring portions fixed to the inner surface of the housing and the spring body, and between the movable-side bent portion and the fixed-side bent portion It may be composed of an intermediate bent portion formed in the spring body of the.
여기서, 상기 중간 굽힘부는상기 가동측 굽힘부에 비해 상대적으로 상기 고정측 굽힘부에 가깝게 형성되며, 상기 중량체에서 멀어지는 방향에 대해 소정의 각도로 밴딩된 구성일 수 있다.Here, the intermediate bent portion may be formed relatively close to the fixed-side bent portion compared to the movable-side bent portion, and may be bent at a predetermined angle with respect to a direction away from the weight.
본 발명의 실시 예에 따른 수평형 리니어 진동발생장치는 또한, 상기 브리지부 반대편에서 상기 제1, 제2 판 스프링부 타단의 제2 스프링 발을 상호 연결하여 두 개의 제2 스프링 발이 틀어짐 없이 동일 선상에 위치하도록 잡아주는 위치 정렬 플레이트;를 더 포함할 수 있다.In the horizontal linear vibration generator according to an embodiment of the present invention, the second spring feet of the other ends of the first and second leaf springs are interconnected from the opposite side of the bridge, so that the two second spring feet are on the same line without distortion. It may further include; a position alignment plate to hold it to be located in the.
여기서, 상기 위치 정렬 플레이트는 상기 제1, 제2 판 스프링부 각각의 제2 스프링 발에 스폿 용접(Spot Welding)된 상태에서, 상기 제2 스프링 발과 함께 상기 하우징의 내측면 정해진 위치에 스폿 용접(Spot Welding)으로 고정될 수 있다.Here, the alignment plate is spot-welded to the second spring foot of each of the first and second leaf spring parts, and the second spring foot is spot-welded together with the second spring foot at a predetermined position on the inner surface of the housing. It can be fixed with (Spot Welding).
본 발명의 실시 예에 따른 수평형 리니어 진동발생장치는 또한, 상기 중량체의 상면에 설치되는 상부 플레이트;를 더 포함할 수 있다.The horizontal linear vibration generator according to an embodiment of the present invention may further include an upper plate installed on the upper surface of the weight body.
이때, 상기 상부 플레이트는 상기 중량체의 상면과 접하도록 설치되는 상면 덮개와, 상기 상면 덮개의 일측 가장자리에서 상기 중량체의 일 측면부를 감싸도록 절곡되는 측면 덮개를 포함할 수 있다.In this case, the upper plate may include a top cover installed to be in contact with the upper surface of the weight body, and a side cover bent to surround one side portion of the weight body at one edge of the top cover.
바람직하게는, 상기 측면 덮개가 중량체의 일 측면부에 고정되는 상기 브리지부를 외측에서 덮도록 결합될 수 있다. Preferably, the side cover may be coupled to cover the bridge part fixed to one side part of the weight from the outside.
본 발명의 실시 예에 따른 수평형 리니어 진동발생장치에 의하면, 탄성체 주요부(판 스프링부 부분)을 여러 번 절곡시킨 특유의 구성으로 인하여, 진동자가 운동할 때 진동자와 고정자를 연결하는 탄성체의 회전이나 틸트가 효과적으로 억제될 수 있으며, 따라서 탄성체의 회전 또는 틸트에 의한 소음 발생 및 진동 특성의 저하가 방지될 수 있다.According to the horizontal linear vibration generating device according to the embodiment of the present invention, due to the unique configuration in which the main part of the elastic body (the leaf spring part) is bent several times, the rotation of the elastic body connecting the vibrator and the stator when the vibrator moves Tilt can be effectively suppressed, and thus noise generation and deterioration of vibration characteristics due to rotation or tilt of the elastic body can be prevented.
또한, 탄성체 다른 주요부(판 스프링과 브리지부가 연결된 부분)가 일정 각도 꺾여 연결된 특유의 구성에 의하여, 중량체 진동 시 중량체와 탄성체가 연결된 부분에 걸리는 응력이 분산되어 경감되는 효과가 발휘되며, 그 결과 탄성체 전체적인 내구성을 향상시키면서 진동발생장치의 가용 주파수 대역을 넓힐 수(공진주파수를 낮출 수) 있는 장점이 있다.In addition, due to the unique configuration in which the other main parts of the elastic body (the part where the leaf spring and the bridge part are connected) are connected at a certain angle, the stress applied to the part where the weight and the elastic body are connected when the weight is vibrated is dispersed and reduced, As a result, there is an advantage in that the usable frequency band of the vibration generator can be widened (resonant frequency can be lowered) while improving the overall durability of the elastic body.
도 1은 종래 선형 진동 발생장치의 대표적인 일례를 도시한 분해 사시도.1 is an exploded perspective view showing a typical example of a conventional linear vibration generator.
도 2는 본 발명의 일 실시 예에 따른 수평형 리니어 진동발생장치의 결합 사시도.Figure 2 is a combined perspective view of a horizontal linear vibration generator according to an embodiment of the present invention.
도 3은 본 발명의 실시 예에 따른 수평형 리니어 진동발생장치의 분해 사시도.3 is an exploded perspective view of a horizontal linear vibration generator according to an embodiment of the present invention;
도 4는 도 2의 수평형 리니어 진동발생장치의 평 단면도.Figure 4 is a plan view of the horizontal linear vibration generator of Figure 2;
도 5는 도 3에 도시된 탄성체를 평면에서 바라본 도면.5 is a plan view of the elastic body shown in FIG.
도 6은 실제 제품과 동일한 모사 환경에서 진동을 가상으로 수행하여 의도하지 않은 방향으로 탄성체에 얼마나 변위가 발생하는지 실제 상황의 결과를 예측한 시뮬레이션 데이터.6 is simulation data that predicts the result of the actual situation how much displacement occurs in the elastic body in an unintended direction by virtually performing vibration in the same simulated environment as the actual product.
도 7은 도 3에 도시된 탄성체를 다른 각도에서 바라본 확대 사시도.7 is an enlarged perspective view of the elastic body shown in FIG. 3 viewed from another angle;
도 8은 브리지부와 제1 스프링 발을 동일 평면 상의 동축 선상에 위치하도록 구성(브리지부와 제1 스프링 발을 일자로 구성)했을 때와 본 발명처럼 동일 평면 상의 이축 선상에 위치하도록 구성(브리지부와 제1 스프링 발의 연결부를 일정 각도 꺾은 구성)했을 때 진동 시 응력 분포를 나타내는 시뮬레이션 데이터.8 is a configuration to be located on a coaxial line on the same plane as the bridge part and the first spring foot (the bridge part and the first spring foot are configured in a straight line) and to be positioned on the same plane biaxially as in the present invention (bridge) Simulation data showing the stress distribution during vibration when the part and the connection part of the first spring foot are bent at a certain angle).
도 9는 본 발명의 다른 실시 예에 따른 수평형 리니어 진동발생장치의 분해 사시도.9 is an exploded perspective view of a horizontal linear vibration generating device according to another embodiment of the present invention.
도 10은 하우징에 진동자가 결합된 모습을 저면에서 바라본 사시도.10 is a perspective view of the vibrator coupled to the housing as viewed from the bottom;
이하, 본 발명의 바람직한 실시 예에 대해 살펴보기로 한다.Hereinafter, a preferred embodiment of the present invention will be described.
명세서에서 사용한 용어는 단지 특정한 실시 예를 설명하기 위해 사용된 것으로, 본 발명을 한정하려는 의도가 아니다. 단수의 표현은 문맥상 명백하게 다르게 뜻하지 않는 한 복수의 표현을 포함한다. Terms used in the specification are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.
본 명세서에서 "포함하다" 또는 "가지다" 등의 용어는 명세서상에 기재된 특징, 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것이 존재함을 지정하려는 것이지, 하나 또는 그 이상의 다른 특징들이나 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다.In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and includes one or more other features or It should be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof does not preclude the possibility of addition.
또한, 제1, 제2 등의 용어는 다양한 구성요소들을 설명하는데 사용될 수 있지만, 상기 구성요소들은 상기 용어들에 의해 한정되어서는 안 된다. 상기 용어들은 하나의 구성요소를 다른 구성요소로부터 구별하는 목적으로만 사용된다.Also, terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.
더하여, 명세서에 기재된 "…부", "…유닛", "…모듈" 등의 용어는 적어도 하나의 기능이나 동작을 처리하는 단위를 의미하며, 이는 하드웨어나 소프트웨어 또는 하드웨어 및 소프트웨어의 결합으로 구현될 수 있다.In addition, terms such as “…unit”, “…unit”, “…module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. can
또한, 본 발명의 설명에서, "대략(substantially)"이라는 용어는, 인용된 특성, 파라미터 또는 값이 정확하게 달성될 필요는 없으며, 허용오차, 측정 오류, 측정 정확성 한계 및 당업자에게 알려진 다른 요소들을 포함하는 편차 또는 변화, 특성이 제공하고자 하는 효과를 제외하지 않는 정도로 이해되어야 한다.Also, in the description of the present invention, the term "substantially" is intended to include tolerances, measurement errors, limits of measurement accuracy, and other factors known to those skilled in the art, without requiring that the recited properties, parameters or values be precisely achieved. It should be understood to the extent not to exclude the effect intended to be provided by the deviation, change, or characteristic.
이후 설명될 본 실시 예들은 "진동으로 신호 Feedback을 받는 장치"에 적용되는 것으로, 휴대 단말기는 휴대 가능한 사용자 기기를 지칭한다. 그러나 이는 단지 일반적인 용어이며, 본 실시 예는 이동 전화기, 손바닥 크기(palm sized) 개인용 컴퓨터(PC), 개인용 통신 시스템(PCS: Personal Communication System), 개인용 디지털 어시스턴트(PDA: Personal Digital Assistant), 휴대용 PC(HPC: Hand-held PC), 스마트 폰(smart phone), 무선 LAN(Local Area Network) 단말기, 랩탑 컴퓨터, 넷북(netbook), 태블릿 피씨(tablet personal computer), 모바일 외 게임기, VR 기기(Virtual Reality), 차량 등 중 다양한 기기 또는 분야에 적용 가능함을 밝혀 둔다.The present embodiments, which will be described later, are applied to “a device that receives signal feedback through vibration,” and the portable terminal refers to a portable user device. However, these are only general terms, and the present embodiment includes a mobile phone, a palm sized personal computer (PC), a personal communication system (PCS), a personal digital assistant (PDA), and a portable PC. (HPC: Hand-held PC), smart phone, wireless LAN (Local Area Network) terminal, laptop computer, netbook, tablet personal computer, non-mobile game console, VR device (Virtual Reality) ), vehicles, etc., can be applied to various devices or fields.
따라서 "진동으로 신호 Feedback을 받는 장치"라는 용어를 이용하는 것은 본 실시 예의 적용을 특정 유형의 장치로 한정하는데 이용되어서는 안 된다.Therefore, the use of the term “device receiving signal feedback by vibration” should not be used to limit the application of the present embodiment to a specific type of device.
또한, 첨부 도면을 참조하여 본 발명을 설명함에 있어, 동일한 구성 요소에 대해서는 동일도면 참조부호를 부여하기로 하며 이에 대한 중복되는 설명은 생략하기로 한다. 그리고 본 발명을 설명함에 있어서 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다.In addition, in describing the present invention with reference to the accompanying drawings, the same reference numerals will be assigned to the same components for the same components, and overlapping descriptions thereof will be omitted. And, in the description of the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.
본 발명을 설명하기에 앞서 이후 사용되는 방향 용어부터 먼저 간단하게 살펴보면, 이후 사용되는 방향 용어 중 제1 방향(도면의 x축 방향)은 도면상 고정자에 대해 진동자가 진동하는 방향을 의미하며, 제2 방향(도면의 y축 방향)은 상기 제1 방향과 직교하는 방향을 의미한다. 그리고 제3 방향(도면의 z축 방향)은 제2 방향에 수직한 평면 상에서 상기 제1 방향과 직교하는 방향을 가리킨다.Before explaining the present invention, a first direction (x-axis direction in the drawing) of the direction terms used later means a direction in which the vibrator vibrates with respect to the stator in the drawing, The second direction (the y-axis direction in the drawing) means a direction orthogonal to the first direction. And the third direction (the z-axis direction in the drawing) indicates a direction perpendicular to the first direction on a plane perpendicular to the second direction.
첨부도면을 참조하여 본 발명의 바람직한 실시 형태에 대해 자세히 살펴보기로 한다.A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
도 2는 본 발명의 일 실시 예에 따른 수평형 리니어 진동발생장치의 결합 사시도이며, 도 3은 본 발명의 실시 예에 따른 수평형 리니어 진동발생장치의 분해 사시도이다. 그리고 도 4는 도 2의 수평형 리니어 진동발생장치의 평 단면도이며, 도 5는 도 3에 도시된 탄성체를 평면에서 바라본 도면이다.2 is a combined perspective view of a horizontal linear vibration generator according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view of the horizontal linear vibration generator according to an embodiment of the present invention. And FIG. 4 is a plan view of the horizontal linear vibration generator of FIG. 2 , and FIG. 5 is a plan view of the elastic body shown in FIG. 3 .
도 2 내지 도 5를 참조하면, 본 발명의 일 실시 예에 따른 수평형 리니어 진동발생장치(1)는 크게, 진동자(10)와 고정자(20)로 구성된다. 여기서 진동자(10)와 고정자(20)는 서로 상대적인 개념으로서, 고정자(20)는 상기 진동자(10)에 대해 고정되는 부분을 의미하고, 상기 진동자(10)는 고정자(20)에 대해서 진동하는 부분을 의미한다.2 to 5 , the horizontal linear vibration generating device 1 according to an embodiment of the present invention is largely composed of a vibrator 10 and a stator 20 . Here, the vibrator 10 and the stator 20 are relative concepts. The stator 20 means a part fixed to the vibrator 10 , and the vibrator 10 is a part vibrating with respect to the stator 20 . means
진동자(10)는 장치 외형을 구성하는 하우징(30) 내에 설치되어 고정자(20)와 상호작용(Interaction)으로 제1 방향에 대하여 운동방향이 주기적으로 바뀌는 직선운동(진동)을 한다. 이때 진동자(10)와 상기 하우징(30)의 사이에는 운동방향이 주기적으로 바뀌는 진동자(10)의 제1 방향 직선운동, 즉 진동을 탄성 지지하도록 탄성체(40)가 설치된다.The vibrator 10 is installed in the housing 30 constituting the outer appearance of the device and performs linear motion (vibration) in which the motion direction is periodically changed with respect to the first direction through interaction with the stator 20 . At this time, an elastic body 40 is installed between the vibrator 10 and the housing 30 to elastically support the first direction linear motion of the vibrator 10 whose movement direction is periodically changed, that is, the vibration.
하우징(30)은 도면의 예시와 같이, 제2 방향 폭에 비해 제1 방향 길이가 긴 평면 모양이 직사각형이며 하부가 개구된 직육면체일 수 있으며, 그 개구된 하부에서 브라켓(34)이 결합된다. 하우징(30) 및 그 하부에서 결합되는 브라켓(34)에 의해 내부에 실장공간이 형성되며, 이처럼 형성된 실장공간에 상기 진동자(10) 및 고정자(20), 그리고 탄성체(40)가 실장된다. As illustrated in the drawings, the housing 30 may be a rectangular parallelepiped in a planar shape having a length in the first direction longer than the width in the second direction, and may be a rectangular parallelepiped with an open lower portion, and the bracket 34 is coupled to the lower portion of the housing. A mounting space is formed inside the housing 30 and the bracket 34 coupled thereunder, and the vibrator 10, the stator 20, and the elastic body 40 are mounted in the mounting space thus formed.
고정자(20)는 브라켓(34) 상에 탑재되는 기판(22)을 포함한다. 그리고 상기 실장공간 중앙에 위치하도록 상기 기판(22) 상에 실장되는 코일(24)을 포함한다. 기판(22) 상부의 실장 공간에 상기 진동자(10)가 제1 방향으로 진동 가능하게 배치되되, 진동자(10)는 상기 코일(24)과 소정 거리를 두고 이격되어 대면하는 자석(14)과 중량체(16)를 포함한다.The stator 20 includes a substrate 22 mounted on a bracket 34 . And a coil 24 mounted on the substrate 22 so as to be located in the center of the mounting space. The vibrator 10 is disposed so as to vibrate in the first direction in the mounting space of the upper portion of the substrate 22, and the vibrator 10 is spaced apart from the coil 24 by a predetermined distance and faces a magnet 14 and a weight It includes a sieve 16 .
중량체(16)의 중앙은 도면의 예시와 같이, 일정 크기(자석(14)에 대응되는 크기)로 홀(또는 홈, 160)이 형성되어 있으며, 이러한 홀(160) 부분에 상기 자석(14)이 견고하게 부착될 수 있다. 이에 따라 코일(24)에 인가된 전원으로 코일(24)과 자석(14)이 상호 작용하여 진동자(10)가 제1 방향으로 진동할 때, 자석(14)은 중량체(16)로부터 이탈 없이 상기 중량체(16)와 함께 제1 방향으로 진동을 할 수 있다.In the center of the weight body 16, a hole (or groove, 160) is formed in a predetermined size (a size corresponding to the magnet 14) as shown in the figure, and the magnet 14 is formed in the hole 160 part. ) can be firmly attached. Accordingly, when the coil 24 and the magnet 14 interact with the power applied to the coil 24 and the vibrator 10 vibrates in the first direction, the magnet 14 does not depart from the weight 16 . It may vibrate in the first direction together with the weight body 16 .
참고로, 도면에는 코일(24)이 고정자(20)를 구성하고 자석(14)이 중량체(16)와 함께 진동자(10)를 이루는 구성을 예를 들어 도시하여 설명하였으나, 반대로 자석(14)이 고정자(20)를 구성하고 코일(24)이 자석(14)과 함께 진동자(10)를 구성하는 변형도 충분히 가능하다. 이 경우 코일(24)은 플렉시블한 케이블을 통해 전술한 브라켓(34) 상의 기판(22)으로부터 전원을 공급받거나 상기 탄성체(40)가 도전체로 활용될 수도 있다.For reference, in the drawings, the coil 24 constitutes the stator 20 and the magnet 14 forms the vibrator 10 together with the weight 16 as an example. A deformation in which the stator 20 is constituted and the coil 24 constitutes the vibrator 10 together with the magnet 14 is sufficiently possible. In this case, the coil 24 may receive power from the substrate 22 on the bracket 34 described above through a flexible cable, or the elastic body 40 may be used as a conductor.
탄성체(40)는 코일(24)에 인가된 전원으로 코일(24)과 자석(14)이 상호 작용하여 진동자(10)가 제1 방향에 대해 운동방향이 주기적으로 바뀌는 진동을 할 때 진동자(10)의 이러한 제1 방향 진동을 탄성 지지한다. 이때 탄성체(40)의 탄성 계수는 그 길이에 따라 달라지며, 따라서 탄성체(40)의 길이를 적절히 조절함으로써 진동자(10)의 진동수를 목표 설계 진동수에 맞게 조정할 수 있다. The elastic body 40 is a power applied to the coil 24 when the coil 24 and the magnet 14 interact to vibrate the vibrator 10 in which the movement direction is periodically changed with respect to the first direction, the vibrator 10 ) to elastically support the vibration in the first direction. At this time, the modulus of elasticity of the elastic body 40 varies depending on its length, and therefore, by appropriately adjusting the length of the elastic body 40, the frequency of the vibrator 10 can be adjusted to match the target design frequency.
본 발명에서 탄성체(40)는 특히, 중량체(16)의 제1 방향 진동을 양측에서 탄성 지지하는 제1, 제2 판 스프링부(42L, 42R)와 브리지부(44)로 이루어져 중량체(16)를 에워싸는 구성일 수 있다. 제1, 제2 판 스프링부(42L, 42R)는 중량체(16)를 사이에 두고 대칭적으로 형성된 구성일 수 있으며, 브리지부(44)는 중량체(16)의 일 측면부에 고정되도록 상기 제1, 제2 판 스프링부(42L, 42R)의 일단에 형성되는 제1 스프링 발(420L, 420R)을 상호 연결한다. In the present invention, in particular, the elastic body 40 is composed of the first and second leaf spring parts 42L and 42R and the bridge part 44 that elastically support the vibration in the first direction of the weight body 16 from both sides. 16) may be a configuration surrounding the. The first and second leaf spring parts 42L and 42R may be symmetrically formed with the weight body 16 interposed therebetween, and the bridge part 44 is fixed to one side of the weight body 16 . The first spring feet 420L and 420R formed at one end of the first and second leaf springs 42L and 42R are interconnected.
제1, 제2 판 스프링부(42L, 42R) 각각은 도 5와 같이, 상기 제1 방향과 직교하는 제2 방향을 따라 적어도 세 군데에 굽힘부가 형성된 구성일 수 있다. 제1, 제2 판 스프링부(42L, 42R) 각각에 형성되는 굽힘부는 바람직하게, 가동측 굽힘부(421)(중량체와 접하는 부분에 형성되는 굽힘부)와 고정측 굽힘부(424)(하우징과 접하는 부분에 형성되는 굽힘부), 그리고 그 사이의 중간 굽힘부(423)로 구성될 수 있다.Each of the first and second leaf spring portions 42L and 42R may have a configuration in which bent portions are formed at at least three places along a second direction orthogonal to the first direction, as shown in FIG. 5 . The bending portions formed in each of the first and second leaf spring portions 42L and 42R are preferably a movable side bending portion 421 (a bending portion formed in a portion in contact with a weight) and a fixed side bending portion 424 ( a bent portion formed in a portion in contact with the housing), and an intermediate bent portion 423 therebetween.
가동측 굽힘부(421)는 상기 제1, 제2 판 스프링부(42L, 42R)의 스프링 바디(422L, 422R)와 상기 제1 스프링 발(420L, 420R)의 경계부에 형성될 수 있으며, 고정측 굽힘부(424)는 브리지부(44)의 반대편에서 하우징(30)의 내측면에 고정되는 제1, 제2 판 스프링부(42L, 42R) 타단의 제2 스프링 발(425L, 425R)과 상기 스프링 바디(422L, 422R)의 경계부에 형성될 수 있다. 그리고 가동측 굽힘부(421)와 고정측 굽힘부(424) 사이의 상기 스프링 바디(422L, 422R)에 중간 굽힘부(423)가 형성될 수 있다.The movable side bending portion 421 may be formed at a boundary portion between the spring bodies 422L and 422R of the first and second leaf spring portions 42L and 42R and the first spring feet 420L and 420R, and fixed. The side bending portion 424 includes the first and second leaf spring portions 42L and 42R fixed to the inner surface of the housing 30 on the opposite side of the bridge portion 44, and second spring feet 425L and 425R of the other end and It may be formed at the boundary of the spring body (422L, 422R). In addition, an intermediate bent portion 423 may be formed in the spring body 422L, 422R between the movable-side bent portion 421 and the fixed-side bent portion 424 .
이때 중간 굽힘부(423)는 바람직하게, 도면(도 5)에 예시한 바와 같아, 상기 가동측 굽힘부(421)에 비해 상대적으로 상기 고정측 굽힘부(424)에 가깝게 형성될 수 있으며, 상기 중량체(16)에서 멀어지는 방향에 대해 소정의 각도로 밴딩된 구조일 수 있다. 즉 중량체(16) 반대편(외측)으로 소정 각도 구부러져 만곡점을 형성하도록 구성될 수 있다.In this case, the intermediate bent portion 423 is preferably, as illustrated in the drawing (Fig. 5), relatively close to the fixed-side bent portion 424 compared to the movable-side bent portion 421, and the The structure may be bent at a predetermined angle with respect to the direction away from the weight body 16 . That is, it may be configured to be bent at a predetermined angle to the opposite side (outside) of the weight 16 to form a curve point.
이처럼 제1, 제2 판 스프링부(42L, 42R) 각각에 적어도 세 군데에 굽힘부가 형성되면, 하나의 스프링에 두 군데만 굽힘부를 형성시킨 종래의 구성(도 1 참조)에 비해 진동자(10)가 의도하는 진동 방향(제1 방향) 외에 다른 방향(제2 방향 및 제3 방향)으로 움직여 진동 손실이 발생하는 것을 효과적으로 억제할 수 있다. 이에 대해서는 도 6을 참조하기로 한다.As such, when bending portions are formed in at least three places in each of the first and second leaf spring portions 42L and 42R, the vibrator 10 is compared to the conventional configuration (see FIG. 1) in which only two bending portions are formed in one spring. In addition to the intended vibration direction (first direction), it is possible to effectively suppress the occurrence of vibration loss by moving in other directions (second direction and third direction). For this, reference will be made to FIG. 6 .
도 6은 실제 제품과 동일한 모사 환경에서 진동을 가상으로 수행하여 의도하지 않은 제2 방향으로 탄성체에 얼마나 변위가 발생하는지 실제 상황의 결과를 예측한 시뮬레이션 데이터로서, 도 6의 (a)는 탄성체에 굽힘부를 두 군데 형성시킨 경우 시뮬레이션 결과이며, 도 6의 (b)는 본 발명의 실시 예처럼 탄성체에 굽힘부를 세 군데 형성시킨 경우 시뮬레이션 결과를 나타낸다. 6 is simulation data that predicts the result of the actual situation how much displacement occurs in the elastic body in an unintentional second direction by virtually performing vibration in the same simulated environment as the actual product. It is a simulation result when two bending parts are formed, and FIG. 6 (b) shows a simulation result when three bending parts are formed in an elastic body as in the embodiment of the present invention.
도 6의 시뮬레이션 결과를 보면, 진동자 양 측에서 이를 탄성 지지하는 탄성체를 두 번만 절곡시킨 구성의 경우 제2 방향(y축 방향)으로 최대 0.119mm까지 이동되었으나, 본 발명의 실시 예처럼 탄성체를 세 번 절곡시킨 구성에서는 제2 방향(y축 방향)으로 최대 0.085mm만 이동된 것을 알 수 있다. 비율로 따지면 대략 30% 가깝게 제2 방향 변위가 억제된 것이다.6, in the case of the configuration in which the elastic body that elastically supports it on both sides of the vibrator is bent only twice, it moves up to 0.119 mm in the second direction (y-axis direction), but as in the embodiment of the present invention, the elastic body is It can be seen that only 0.085 mm is moved at most in the second direction (y-axis direction) in the bent configuration. In terms of the ratio, the displacement in the second direction is suppressed by approximately 30%.
의도치 않게 발생하는 제2 방향 변위는 그 변위 값이 크면 클수록 진동 효율에 악영향을 미친다. 제2 방향 변위가 커지면 그만큼 원래 의도하던 제1 방향 변위가 줄어 진동 손실이 커지기 때문이다. 또한 의도치 않은 진동자의 움직임은 하우징과의 충격을 유발하여 장치 내구성을 저하시키고 소음 발생의 원인이 된다. The second direction displacement, which occurs unintentionally, adversely affects vibration efficiency as the displacement value increases. This is because, as the displacement in the second direction increases, the originally intended displacement in the first direction decreases to the extent that the vibration loss increases. In addition, the unintentional movement of the vibrator causes an impact with the housing, reducing the durability of the device and causing noise.
그런 측면에서 시뮬레이션 결과에서 보듯이 진동자의 제2 방향 변위를 분명히 억제할 수 있는 본 발명은, 진동 손실이 그만큼 줄어 진동 효율이 증가하고, 제2 방향 변위가 억제된 만큼 스프링 입장에서 부담이 감소하며, 의도치 않은 진동자(10)의 움직임에 따른 하우징(30)과의 충격 발생 확률이 크게 줄어 장치 내구성 및 소음 발생의 측면에서 명확한 효과를 가지게 된다. In that aspect, as shown in the simulation results, in the present invention, which can clearly suppress the displacement in the second direction of the vibrator, the vibration loss is reduced that much, the vibration efficiency is increased, and the burden on the spring is reduced as much as the displacement in the second direction is suppressed. , the probability of occurrence of an impact with the housing 30 according to the unintentional movement of the vibrator 10 is greatly reduced, which has a clear effect in terms of device durability and noise generation.
도 7은 도 3에 도시된 탄성체를 다른 각도에서 바라본 확대 사시도이다.7 is an enlarged perspective view of the elastic body shown in FIG. 3 viewed from another angle.
도 7을 참조하면, 탄성체(40)를 구성하는 전술한 브리지부(44)는 제1, 제2 판 스프링부(42L, 42R) 각각의 제1 스프링 발(420L, 420R)과 동일 평면 상에 위치하도록 배치되되, 제1, 제2 판 스프링부(42L, 42R) 각각의 제1 스프링 발(420L, 420R)과 브리지부(44)는 제1 방향과 수직한 제3 방향 위치가 서로 다르게 형성된다. 즉 브리지부(44)는 동일 평면 상에서 상기 제1 스프링 발(420L, 420R)과 일정 각도(대략 90도) 꺾인 구조로 연결될 수 있다.Referring to FIG. 7 , the aforementioned bridge portion 44 constituting the elastic body 40 is on the same plane as the first spring feet 420L and 420R of the first and second leaf spring portions 42L and 42R, respectively. The first spring feet 420L and 420R and the bridge portion 44 of each of the first and second leaf spring portions 42L and 42R have different positions in the third direction perpendicular to the first direction. do. That is, the bridge part 44 may be connected to the first spring feet 420L and 420R in a structure bent at a predetermined angle (about 90 degrees) on the same plane.
이처럼 브리지부(44)가 동일 평면 상에서 상기 제1 스프링 발(420L, 420R)과 일정 각도(대략 90도) 꺾인 구조로 연결되면, 진동자(10)의 제1 방향 진동에 따른 탄성체(40) 변위 시 응력이 꺾인 부분으로 분산되는 효과가 발휘된다. 다시 말해 진동자(10)와 탄성체(40), 정확하게는 중량체(16)와 탄성체(40)가 접하는 지점(용접이 행해지는 지점)으로의 응력 집중이 억제되므로 탄성체(40)의 내구성이 증대될 수 있다.As such, when the bridge portion 44 is connected to the first spring feet 420L and 420R in a structure bent at a predetermined angle (about 90 degrees) on the same plane, the elastic body 40 according to the vibration of the vibrator 10 in the first direction. The effect of dispersing the stress to the bent part is exhibited. In other words, since the stress concentration at the point where the vibrator 10 and the elastic body 40, precisely, the weight 16 and the elastic body 40 contact (the point where welding is performed) is suppressed, the durability of the elastic body 40 is increased. can
도 8은 브리지부와 제1 스프링 발을 동일 평면 상의 동축 선상에 위치하도록 구성(브리지부와 제1 스프링 발을 일자로 구성)했을 때와 본 발명처럼 동일 평면 상의 이축 선상에 위치하도록 구성(브리지부와 제1 스프링 발의 연결부를 일정 각도 꺾은 구성)했을 때 진동 시 응력 분포를 나타내는 시뮬레이션 데이터를 나타낸다.8 is a configuration to be located on a coaxial line on the same plane as the bridge part and the first spring foot (the bridge part and the first spring foot are configured in a straight line) and to be positioned on the same plane biaxially as in the present invention (bridge) The simulation data showing the stress distribution during vibration when the part and the connection part of the first spring foot are bent at a certain angle) are shown.
여기서, 빨간색 원으로 표시된 부분은 진동자, 정확하게는 탄성체가 중량체에 용접(Spot Welding)되는 가상의 용접 포인트를 나타낸다.Here, a portion indicated by a red circle indicates a virtual welding point where the vibrator, precisely, the elastic body is spot welded to the weight body.
도 8을 보면, 브리지부(44)와 제1 스프링 발(420L, 420R)을 동일 평면 상의 동축 선상에 위치하도록 구성한 경우(브리지부(44)와 제1 스프링 발(420L, 420R)을 일자로 구성한 경우로서 도 8의 개선 전 구조), 특정 경계부(중량체로부터 탄성체의 이격이 시작되는 지점)를 기준으로 안쪽에 응력이 집중적으로 발생하는 것을 알 수 있다. Referring to FIG. 8 , when the bridge portion 44 and the first spring feet 420L and 420R are configured to be located on the same plane and on the coaxial line (the bridge portion 44 and the first spring feet 420L and 420R) are arranged in a straight line. As a configuration case, it can be seen that stress is concentrated on the inside based on the structure before improvement in FIG. 8) and a specific boundary (the point where the separation of the elastic body from the weight starts).
이 경우 빨간 원으로 표시된 가상의 용접 포인트를 포함하여, 상기 경계부 주변 어느 곳을 용접 포인트로 선정하더라도 진동 발생에 따른 응력과 용접 잔류 응력이 겹치는 현상을 회피할 수 없다. 이는 다시 말해 브리지부와 제1 스프링 발을 일자로 구성하면, 경계부 주변 어디를 용접하더라도 응력 집중을 피할 수 없어 내구성 저하가 불가피할 수 밖에 없음을 의미한다.In this case, even if any location around the boundary is selected as the welding point, including the virtual welding point indicated by a red circle, the overlapping phenomenon of stress caused by vibration and welding residual stress cannot be avoided. In other words, if the bridge part and the first spring foot are formed in a straight line, stress concentration cannot be avoided even when welding anywhere around the boundary part, which means that durability is inevitably reduced.
반면, 본 발명처럼 브리지부와 제1 스프링 발을 동일 평면 상의 이축 선상에 위치하도록 구성하면(브리지부와 제1 스프링 발의 연결부를 일정 각도 꺾은 경우로서 도 8의 본 발명), 특정 경계부(중량체로부터 탄성체의 이격이 시작되는 지점)을 기준으로 안쪽에 발생하는 응력이 제1 스프링 발과 브리지부의 연결부(꺾임부) 쪽으로 분산되는 것을 명확히 확인할 수 있다. On the other hand, if the bridge part and the first spring foot are configured to be located on the same plane on the biaxial line as in the present invention (the present invention in FIG. 8 as a case where the connection part of the bridge part and the first spring foot is bent at a certain angle), a specific boundary part (with a weight) It can be clearly seen that the stress generated on the inside based on the point at which the separation of the elastic body starts) is dispersed toward the connection part (bent part) of the first spring foot and the bridge part.
이 경우 빨간 원으로 표시된 가상의 용접 포인트를 비롯해, 상기 경계부 주변에 응력 집중을 회피할 수 있는 용접 포인트를 선정함에 있어 그 선정의 자유도가 높아지는 것은 물론, 응력 집중을 회피할 수 있는 용접 포인트 선정의 자유도가 높아진 만큼 탄성체의 내구성 확보에 유리하므로, 결과적으로 제품의 전체적인 내구성을 향상시킬 수 있다. In this case, the degree of freedom of selection is increased in selecting welding points that can avoid stress concentration around the boundary, including the virtual welding point indicated by the red circle, as well as the selection of welding points that can avoid stress concentration. As the degree of freedom is increased, it is advantageous to secure the durability of the elastic body, and as a result, the overall durability of the product can be improved.
한편, 앞선 도 7에서 브리지부(44)와 제1, 제2 판 스프링부(42L, 42R)의 제1 스프링 발(420L, 420R)이 일정 각도(대략 90도) 꺾인 구조로 연결되는 부분의 외측 모서리부분(도 7에 타원으로 표시한 부분)을 일정 곡률로 라운드부를 형성하거나 테이퍼지게 구성하면, 해당 부분을 단순히 절곡시킨 형태보다는 응력 분산 면적이 넓어져 응력 분산에 유리하고 용접 위치 선정도 용이해진다.On the other hand, in FIG. 7, the bridge portion 44 and the first spring feet 420L and 420R of the first and second leaf spring portions 42L and 42R are connected in a structure bent at a predetermined angle (approximately 90 degrees). If the outer corner part (the part indicated by the oval in FIG. 7) is formed to be round or tapered with a certain curvature, the stress dispersion area is widened rather than simply bending the part, which is advantageous for stress dispersion and easy to select a welding location. becomes
도 9는 본 발명의 다른 실시 예에 따른 수평형 리니어 진동발생장치의 분해 사시도이며, 도 10은 하우징에 진동자가 결합된 모습을 저면에서 바라본 사시도이다.9 is an exploded perspective view of a horizontal linear vibration generating device according to another embodiment of the present invention, and FIG. 10 is a perspective view of the vibrator coupled to the housing as viewed from the bottom.
도 9 및 도 10에 도시된 본 발명의 다른 실시 예에 따른 수평형 리니어 진동발생장치는 위치 정렬 플레이트(50)와 상부 플레이트(60)를 더 포함하는 점을 제외하고는, 전술한 일 실시 예에 따른 수평형 리니어 진동발생장치와 구성이 동일하다. 따라서 전술한 일 실시 예와 동일한 구성에 대한 중복된 설명은 생략하며, 새롭게 부가된 구성에 대해서만 간단히 살펴보기로 한다.The horizontal linear vibration generator according to another embodiment of the present invention shown in FIGS. 9 and 10 is an embodiment described above, except that it further includes a positioning plate 50 and an upper plate 60 . The configuration is the same as that of the horizontal linear vibration generator. Therefore, a duplicate description of the same configuration as in the above-described exemplary embodiment will be omitted, and only a newly added configuration will be briefly reviewed.
도 9 및 도 10을 참조하면, 본 발명의 다른 실시 예에 따른 수평형 리니어 진동발생장치(1')에 부가된 위치 정렬 플레이트(50)는, 브리지부(44) 반대편에서 제1, 제2 판 스프링부(42L, 42R) 타단의 제2 스프링 발(425L, 425R)을 상호 연결하여 두 개의 제2 스프링 발(425L, 425R)이 틀어짐 없이 동일 선상(제1 방향 기준 동일 선상)에 위치하도록 잡아주는 역할을 한다. 또한 탄성체(40)와 진동자(10) 사이의 에어 갭(Air Gap)을 줄여주는 역할을 한다.9 and 10 , the alignment plate 50 added to the horizontal linear vibration generating device 1 ′ according to another embodiment of the present invention is first and second from the opposite side of the bridge unit 44 . The second spring feet (425L, 425R) of the other ends of the leaf spring parts (42L, 42R) are interconnected so that the two second spring feet (425L, 425R) are positioned on the same line (on the same line based on the first direction) without distortion. serves as a catcher. In addition, it serves to reduce the air gap (Air Gap) between the elastic body (40) and the vibrator (10).
위치 정렬 플레이트(50)에 의해 두 개의 제2 스프링 발(425L, 425R)이 동일 선상에 정확하게 정렬된 상태로 구속되면, 그만큼 제1 방향을 제외한 다른 방향으로의 변위가 억제되므로 진동 성능이 향상될 수 있으며, 위치 정렬 플레이트(50)로 인해 위와 같이 에어 갭이 줄면 그만큼 진동 시 진동자(10)가 받는 공기 저항이 줄게 되므로 보다 향상된 진동 성능이 발휘될 수 있다. When the two second spring feet 425L, 425R are restrained in a precisely aligned state on the same line by the alignment plate 50, displacement in other directions except for the first direction is suppressed by that much, so that the vibration performance will be improved. In addition, if the air gap is reduced due to the alignment plate 50 as described above, the air resistance received by the vibrator 10 during vibration is reduced by that much, so that more improved vibration performance can be exhibited.
위치 정렬 플레이트(50)는 바람직하게, 제1 방향으로 소정의 길이를 갖는 판상체로 구성될 수 있으며, 대향 배치되는 상기 제1, 제2 판 스프링부(42L, 42R)의 제2 스프링 발(425L, 425R)에 1 차로 스폿 용접(Spot Welding)된 상태에서, 상기 제2 스프링 발(425L, 425R)과 함께 상기 하우징(30)의 내측면 정해진 위치에 2차 스폿 용접(Spot Welding)으로 고정될 수 있다.The alignment plate 50 may be formed of a plate-shaped body having a predetermined length in the first direction, and the second spring feet ( In the state of primary spot welding to 425L and 425R, it is fixed by secondary spot welding at a predetermined position on the inner surface of the housing 30 together with the second spring feet 425L and 425R. can be
여기서, 1차 스폿 용접 포인트(제2 스프링 발(425L, 425R)과 위치 정렬 플레이트(50)가 용접되는 포인트)와 상기 2차 스폿 용접 포인트는 제2 방향에서 봤을 때 서로 중첩되거나 겹치지 않는 위치가 바람직하다. 두 스폿 용접 포인트가 조금이라도 겹칠 경우, 그 겹쳐진 위치에 용접에 의한 응력 집중으로 하우징(30) 또는 탄성체(40)가 손상될 가능성이 높아지기 때문이다.Here, the primary spot welding point (the point at which the second spring feet 425L and 425R and the positioning plate 50 are welded) and the secondary spot welding point overlap or do not overlap each other when viewed from the second direction. desirable. This is because, when the two spot welding points overlap even a little, the possibility of damage to the housing 30 or the elastic body 40 increases due to stress concentration due to welding at the overlapping position.
본 실시 예에 적용된 상부 플레이트(60)는 중량체(16)의 상면에 설치된다. 구체적으로, 상기 상부 플레이트(60)는, 중량체(16)의 상면과 접하도록 설치되는 상면 덮개(62)와, 상면 덮개(62)의 일측 가장자리에서 중량체(16)의 일 측면부를 감싸도록 절곡되는 측면 덮개(64)를 포함하며, 측면 덮개(64)는 중량체(16)의 일 측면부에 고정되는 상기 브리지부(44)를 외측에서 덮도록 결합될 수 있다.The upper plate 60 applied to this embodiment is installed on the upper surface of the weight body 16 . Specifically, the upper plate 60 includes an upper cover 62 installed to be in contact with the upper surface of the weight body 16 , and one side portion of the weight body 16 at one edge of the upper cover 62 . It includes a bent side cover 64 , and the side cover 64 may be coupled to cover the bridge portion 44 fixed to one side portion of the weight body 16 from the outside.
이와 같은 구성에 의하면, 상기 상부 플레이트(60)의 상면 덮개(62)가 중량체(16)의 상면에서 중량체(16)의 대략 중앙에 실장된 전술한 자석(14)의 백요크 역할을 하므로 코일(24)이 발생시킨 전기장이 손실 없이 자석(14) 측에 집중되는 효과가 발휘되며, 측면 덮개(64)가 브리지부(44)를 감싸기 때문에 탄성체(40)의 전체적인 내구성도 더욱 증대될 수 있다.According to this configuration, the upper surface cover 62 of the upper plate 60 serves as a back yoke of the above-described magnet 14 mounted in the approximate center of the weight body 16 on the upper surface of the weight body 16 . The effect of concentrating the electric field generated by the coil 24 to the magnet 14 side without loss is exhibited, and since the side cover 64 surrounds the bridge part 44, the overall durability of the elastic body 40 can be further increased. have.
한편, 여기서도 마찬가지로 제1, 제2 판 스프링부(42L, 42R)의 제2 스프링 발(425L, 425R)의 모서리부분(도 9에 타원으로 표시한 부분)을 일정 곡률로 라운드부를 형성하거나 테이퍼지게 구성하면, 해당 부분을 단순히 절곡시킨 형태보다는 응력 분산 면적이 넓어져 응력 분산에 유리하고 용접 위치 선정에 있어서도 용이함을 확보할 수 있다.On the other hand, here as well, the corner portions (the portions indicated by ovals in FIG. 9) of the second spring feet 425L and 425R of the first and second leaf spring portions 42L and 42R are rounded or tapered with a certain curvature. If configured, the stress dispersion area is widened rather than a form in which the part is simply bent, which is advantageous for stress dispersion and can ensure ease of welding position selection.
이상의 본 발명의 상세한 설명에서는 그에 따른 특별한 실시 예에 대해서만 기술하였다. 하지만 본 발명은 상세한 설명에서 언급되는 특별한 형태로 한정되는 것이 아닌 것으로 이해되어야 하며, 오히려 첨부된 청구범위에 의해 정의되는 본 발명의 정신과 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.In the above detailed description of the present invention, only specific embodiments thereof have been described. However, it is to be understood that the present invention is not limited to the particular form recited in the detailed description, but rather, it is to be understood to cover all modifications and equivalents and substitutions falling within the spirit and scope of the present invention as defined by the appended claims. should be
[부호의 설명][Explanation of code]
1, 1' : 수평형 리니어 진동발생장치1, 1': Horizontal linear vibration generator
10 : 진동자 14 : 자석10: vibrator 14: magnet
16 : 중량체 20 : 고정자16: weight 20: stator
22 : 기판 24 : 코일22: substrate 24: coil
30 : 하우징 34 : 브라켓30: housing 34: bracket
40 : 탄성체 42L : 제1 판 스프링부40: elastic body 42L: first leaf spring part
42R : 제2 판 스프링부 44 : 브리지부42R: second leaf spring part 44: bridge part
50 : 위치 정렬 플레이트 60 : 상부 플레이트50: positioning plate 60: upper plate
62 : 상면 덮개 64: 측면 덮개62: top cover 64: side cover
420L, 420R : 제1 스프링 발 421 : 가동측 굽힘부420L, 420R: first spring foot 421: movable side bending part
422L, 422R : 스프링 바디 423 : 중간 굽힘부422L, 422R: spring body 423: intermediate bend
424 : 고정측 굽힘부 425L, 425R : 제2 스프링 발424: fixed side bent part 425L, 425R: second spring foot

Claims (10)

  1. 하우징;housing;
    상기 하우징의 내부에 실장되는 코일;a coil mounted inside the housing;
    상기 하우징의 내부에 상기 코일과 대면하도록 이격 배치되는 자석;a magnet disposed inside the housing to face the coil and spaced apart;
    상기 코일과 자석 중 하나와 함께 상기 하우징 내에 제1 방향으로 진동 가능하게 배치되는 중량체;a weight body disposed so as to be oscillated in a first direction in the housing together with one of the coil and the magnet;
    상기 하우징과 중량체 사이에 설치되며 상기 중량체의 제1 방향 진동을 탄성 지지하는 탄성체;를 포함하며, Includes; an elastic body installed between the housing and the weight and elastically supporting the vibration of the weight in the first direction;
    상기 탄성체는, The elastic body,
    상기 중량체의 제1 방향 진동을 양측에서 탄성 지지하는 제1, 제2 판 스프링부와, first and second leaf springs elastically supporting the vibration of the weight in the first direction from both sides;
    상기 중량체의 일 측면부에 고정되는 상기 제1, 제2 판 스프링부 일단의 제1 스프링 발을 상호 연결하는 브리지부로 구성되고,and a bridge part for interconnecting first spring feet of one end of the first and second leaf spring parts fixed to one side part of the weight body;
    상기 제1, 제2 판 스프링부 각각에는 상기 제1 방향과 직교하는 제2 방향을 따라 적어도 세 군데에 굽힘부가 형성되는 수평형 리니어 진동발생장치. A horizontal linear vibration generating device in which bending portions are formed at each of the first and second leaf spring portions in at least three places along a second direction orthogonal to the first direction.
  2. 제 1 항에 있어서,The method of claim 1,
    상기 제1 스프링 발과 브리지부가 동일 평면 상에 배치되되, 상기 제1 스프링 발과 브리지부는 상기 제1 방향과 수직한 제3 방향의 위치가 서로 다른 수평형 리니어 진동발생장치.A horizontal linear vibration generating device in which the first spring foot and the bridge part are disposed on the same plane, and the first spring foot and the bridge part have different positions in a third direction perpendicular to the first direction.
  3. 제 1 항 또는 제 2 항에 있어서,3. The method of claim 1 or 2,
    상기 코일은 하우징과 결합하는 브라켓 상면의 기판 상에 실장되고,The coil is mounted on a substrate on the upper surface of the bracket coupled to the housing,
    상기 자석은 상기 코일과 이격되어 대면하는 위치의 상기 중량체 내측에 결합되는 수평형 리니어 진동발생장치.The magnet is a horizontal linear vibration generator coupled to the inside of the weight at a position to face the coil and spaced apart.
  4. 제 1 항 또는 제 2 항에 있어서,3. The method according to claim 1 or 2,
    상기 제1, 제2 판 스프링부 각각의 상기 굽힘부는,The bending portion of each of the first and second leaf spring portions,
    상기 제1, 제2 판 스프링부의 스프링 바디와 상기 제1 스프링 발의 경계부에 형성되는 가동측 굽힘부와, a movable-side bending portion formed at a boundary between the spring body of the first and second leaf springs and the first spring foot;
    상기 브리지부의 반대편에서 상기 하우징의 내측면에 고정되는 상기 제1, 제2 판 스프링부 타단의 제2 스프링 발과 상기 스프링 바디의 경계부에 형성되는 고정측 굽힘부와, a fixed-side bending portion formed at a boundary between the spring body and second spring feet of the other ends of the first and second leaf spring portions fixed to the inner surface of the housing opposite to the bridge portion;
    상기 가동측 굽힘부와 고정측 굽힘부 사이의 상기 스프링 바디에 형성되는 중간 굽힘부로 구성되는 수평형 리니어 진동발생장치.A horizontal linear vibration generating device comprising an intermediate bending portion formed in the spring body between the movable side bending portion and the fixed side bending portion.
  5. 제 4 항에 있어서,5. The method of claim 4,
    상기 중간 굽힘부는 상기 가동측 굽힘부에 비해 상대적으로 상기 고정측 굽힘부에 가깝게 형성되며, 상기 중량체에서 멀어지는 방향에 대해 소정의 각도로 밴딩된 수평형 리니어 진동발생장치.The intermediate bending portion is formed relatively close to the fixed side bending portion compared to the movable side bending portion, and is bent at a predetermined angle with respect to a direction away from the weight body.
  6. 제 1 항 또는 제 2 항에 있어서,3. The method according to claim 1 or 2,
    상기 브리지부 반대편에서 상기 제1, 제2 판 스프링부 타단의 제2 스프링 발을 상호 연결하여 두 개의 제2 스프링 발이 틀어짐 없이 동일 선상에 위치하도록 잡아주는 위치 정렬 플레이트;를 더 포함하는 수평형 리니어 진동발생장치.A horizontal linear type further comprising a; a positioning plate for connecting the second spring feet of the other ends of the first and second leaf springs opposite the bridge part to each other so that the two second spring feet are positioned on the same line without being distorted. vibration generator.
  7. 제 6 항에 있어서,7. The method of claim 6,
    상기 위치 정렬 플레이트는 상기 제1, 제2 판 스프링부 각각의 제2 스프링 발에 스폿 용접(Spot Welding)된 상태에서, 상기 제2 스프링 발과 함께 상기 하우징의 내측면 정해진 위치에 스폿 용접(Spot Welding)으로 고정되는 수평형 리니어 진동발생장치.The alignment plate is spot welded to the second spring foot of each of the first and second leaf spring parts, and the second spring foot is spot welded together with the second spring foot at a predetermined position on the inner surface of the housing. A horizontal linear vibration generator fixed by welding).
  8. 제 1 항 또는 제 2 항에 있어서,3. The method of claim 1 or 2,
    상기 중량체의 상면에 설치되는 상부 플레이트;를 더 포함하는 수평형 리니어 진동발생장치.The horizontal linear vibration generator further comprising a; upper plate installed on the upper surface of the weight body.
  9. 제 8 항에 있어서,9. The method of claim 8,
    상기 상부 플레이트는, The upper plate is
    상기 중량체의 상면과 접하도록 설치되는 상면 덮개와,an upper cover installed in contact with the upper surface of the weight;
    상기 상면 덮개의 일측 가장자리에서 상기 중량체의 일 측면부를 감싸도록 절곡되는 측면 덮개를 포함하는 수평형 리니어 진동발생장치.and a side cover bent so as to surround one side portion of the weight at one edge of the upper cover.
  10. 제 9 항에 있어서,10. The method of claim 9,
    상기 측면 덮개가 중량체의 일 측면부에 고정되는 상기 브리지부를 외측에서 덮도록 결합되는 수평형 리니어 진동발생장치. A horizontal linear vibration generator in which the side cover is coupled to cover the bridge part fixed to one side part of the weight from the outside.
PCT/KR2021/003504 2020-12-11 2021-03-22 Horizontal linear vibration generating device WO2022124483A1 (en)

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