KR20230144864A - horizon vibration actuator - Google Patents

Abstract

The horizontal vibration device of the present invention includes a housing having an internal space, a coil located in the internal space and coupled to the lower surface of the housing, located on an upper part of the coil in the internal space, and a coupling groove on a surface opposite to the coil. A vibrator including a formed weight body and a magnet inserted into the coupling groove and facing the coil - the vibrator vibrates in a first direction perpendicular to the vertical direction due to interaction between the coil and the magnet - and the vibrator an elastic body including first and second elastic bodies respectively coupled to both sides, wherein the weight body includes a central portion extending in the vertical direction and a second direction perpendicular to the first direction, and a central portion extending in a second direction perpendicular to the vertical direction and the first direction, and extends from both ends and includes a first end and a second end that are formed to be wider than the central portion in the first direction, wherein the first elastic body includes a vibrator coupling portion coupled to a side of the first end, and the second end. A housing coupling part coupled to an inner surface of the housing facing the first end, wherein the first elastic body faces the side surfaces of the first end and the central part, but does not face the side surfaces of the second end, and The second elastic body includes a vibrator coupling portion coupled to a side surface of the second end and a housing coupling portion coupled to an inner surface of the housing facing the second end, and the second elastic body includes the second end and the housing coupling portion. It faces the side of the central portion, but does not face the side of the first end.

Description

Horizontal vibration actuator

Horizontal vibration actuator

A typical vibration generator provides vibration to an object through the vibration of a vibrator. However, in a conventional vibration generator, the vibrator does not vibrate only in the intended direction, but sometimes causes vibration in an unintended direction.

Conventional vibration generators adjust the vibration direction by adjusting the coupling position of the vibrator or combining a separate guide structure to suppress vibration in an unwanted direction and generate vibration in a desired direction. However, there was a problem that the structure of the vibration generating device became unstable or the internal structure of the vibration generating device became complex due to the vibrator coupled in a specific direction to control vibration. As the structure of the vibration generator becomes unstable, there is a problem that it causes deformation of the frame or frequent breakdowns occur due to the complex internal structure.

Accordingly, when controlling the direction of vibration of a vibration generator, there is an increasing demand to stably transmit vibration in a desired direction and alleviate vibration in an undesired direction.

Republic of Korea Patent Publication No. 10-2019-0121098 (Publication date: October 25, 2019, Title of invention: Horizontal linear vibration generator)

The purpose of the horizontal vibration device of the present invention is to effectively provide vibration in the horizontal direction to an object.

In addition, the purpose of the horizontal vibration device of the present invention is to provide a structure that provides horizontal vibration to an object while maximizing the left and right vibration distance and minimizing internal collision of the vibrator.

The horizontal vibration device of the present invention includes a housing having an internal space, a coil located in the internal space and coupled to the lower surface of the housing, located on an upper part of the coil in the internal space, and a coupling groove on a surface opposite to the coil. A vibrator including a formed weight body and a magnet inserted into the coupling groove and facing the coil - the vibrator vibrates in a first direction perpendicular to the vertical direction due to interaction between the coil and the magnet - and the vibrator an elastic body including first and second elastic bodies respectively coupled to both sides, wherein the weight body includes a central portion extending in the vertical direction and a second direction perpendicular to the first direction, and a central portion extending in a second direction perpendicular to the vertical direction and the first direction, and extends from both ends and includes a first end and a second end that are formed to be wider than the central portion in the first direction, wherein the first elastic body includes a vibrator coupling portion coupled to a side of the first end, and the second end. A housing coupling part coupled to an inner surface of the housing facing the first end, wherein the first elastic body faces the side surfaces of the first end and the central part, but does not face the side surfaces of the second end, and The second elastic body includes a vibrator coupling portion coupled to a side surface of the second end and a housing coupling portion coupled to an inner surface of the housing facing the second end, and the second elastic body includes the second end and the housing coupling portion. It faces the side of the central portion, but does not face the side of the first end.

In one embodiment of the present invention, at least one of the first and second elastic bodies includes a connection part, an inner extension part extending from the connection part in the inner direction of the housing to the vibrator coupling part, and a connection part from the housing. It may include an outer extension part that extends in an outward direction and extends to the housing coupling part.

In one embodiment of the present invention, one of the inner extension part and the outer extension part extends from the top of the connection part, and the other one of the inner extension part and the outer extension part extends from the bottom of the connection part. You can.

In one embodiment of the present invention, the connection part corresponds to one end of the second direction in at least one of the first and second elastic bodies, and at least one of the vibrator coupling part and the housing coupling part is connected to the first and second elastic bodies. It may correspond to the other end of at least one of the second elastic bodies in the second direction.

In one embodiment of the present invention, the housing may include a bracket including a lower surface and two sides extending from the lower surface, and a cover coupled to the bracket and including an upper surface and two sides extending from the upper surface. there is.

In one embodiment of the present invention, the weight may be formed of a magnetic material.

In one embodiment of the present invention, the weight body includes a bonding groove formed inside the coupling groove and a bond portion filled in the bonding groove, and the bond portion may couple the weight body and the magnet.

In one embodiment of the present invention, the magnet may be formed to have an area equal to the area of the central portion in the first direction.

In one embodiment of the present invention, it is coupled to a portion of the side of the first and second ends of the weight body to which the first and second elastic bodies are not coupled, and may further include a damper formed of a flexible material. You can.

In one embodiment of the present invention, it further includes a first vibration guide part coupled to the inner upper surface of the housing and a second vibration guide part coupled to the inner lower surface of the housing, wherein the first and second vibration guide parts are Vibration of the vibrator in the first direction can be guided.

In one embodiment of the present invention, both ends of the first vibration guide may be coupled to the inner upper surface, and a central portion between the two ends may be formed to be spaced apart from the inner upper surface.

In one embodiment of the present invention, the second vibration guide part includes a protrusion protruding upward from the inner lower surface, and the coil may be accommodated in a space between the protrusion and the inner lower surface.

The horizontal vibration device of the present invention can effectively vibrate an object in the horizontal direction.

The horizontal vibration device of the present invention has the advantage of providing a structure that provides horizontal vibration to an object while maximizing the left and right vibration distance and minimizing internal collision of the vibrator.

1 is a perspective view of a horizontal vibration device according to an embodiment of the present invention.
Figure 2 is an exploded view of the horizontal vibration device shown in Figure 1.
Figure 3 is a cross-sectional view of a horizontal vibration device according to an embodiment of the present invention.
Figure 4 is a plan view of a horizontal vibration device according to an embodiment of the present invention.
Figure 5 is a perspective view of a first elastic body according to an embodiment of the present invention.
Figure 6 is a plan view of a horizontal vibration device according to the operation of the present invention.

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted. Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, each step described may be performed regardless of the listed order, except when it must be performed in the listed order due to a special causal relationship.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

1 is a perspective view of a horizontal vibration device according to an embodiment of the present invention. Figure 2 is a diagram

This is an exploded view of the horizontal vibration device shown in 1.

Referring to Figures 1 and 2, the horizontal vibration device of the present invention includes a housing 100, a coil 200, a vibrator 300, an elastic body 400, a damper 500, and a vibration guide unit 600. .

The housing 100 corresponds to the exterior of the horizontal vibration device. The housing 100 is formed in a hexahedral shape. Specifically, the housing 100 may be formed in the shape of a long square pillar in one direction. Hereinafter, based on FIG. 1, the up and down direction of the drawing is referred to as the up and down direction (Z direction), the narrow width direction of the housing 100 is referred to as the first direction (Y direction), and the long direction of the housing 100 is referred to as the first direction (Y direction). The longitudinal direction will be described as the second direction (X direction). Here, the up-down direction, the first direction, and the second direction may all be orthogonal to each other.

The housing 100 includes a bracket 110 and a cover 120.

The bracket 110 corresponds to the lower component of the housing 100. The bracket 110 includes a lower surface formed in a plate shape and two side surfaces extending in the horizontal direction from the edge of the lower surface. The lower surface and side surfaces of the bracket 110 may be formed as separate components and then combined, or may be formed as one piece.

Cover 120 corresponds to the upper component of housing 100. Cover 120 is located on the upper part of bracket 110. The cover 120 is coupled to the bracket 110 and includes an upper surface formed in a plate shape and two side surfaces extending in the horizontal direction from the edge of the upper surface. The top and side surfaces of the cover 120 may be formed as separate components and then combined, or may be formed as one piece.

The two extended sides formed by the racket 110 and the cover 120 are formed so as not to overlap each other between the brackets 110 and the cover 120. Therefore, the bracket 110 and the cover 120 are combined to form four sides of the housing 100, which has a hexahedral shape, to form a hexahedron.

A component for generating vibration in the horizontal direction is located in the housing 100 formed by combining the bracket 110 and the cover 120. Specifically, a coil 200, a vibrator 300, an elastic body 400, a damper 500, and a vibration guide unit 600 are located.

The coil 200 is coupled to the lower surface of the housing 100. Specifically, the coil 200 can be coupled to a flexible printed circuit board (FPCB) 210 and receive an electrical signal from the outside. The flexible circuit board 210 to which the coil 200 is coupled may include a circuit structure and a chipset that can control the components of the horizontal vibration device. The coil 200 may receive an electric signal and generate vibration through interaction with the magnet 350, which will be described later.

The vibrator 300 is located on top of the coil 200 inside the horizontal vibration device. Specifically, the vibrator 300 is located on top of the coil 200 and is spaced apart from the coil 200. The vibrator 300 includes a weight body 310 and a magnet 350. The weight body 310 is formed in the shape of a square pillar. Specifically, the weight body 310 is formed in the shape of a long square pillar in one direction and includes a coupling groove 320 recessed inward on the surface opposite to the coil 200. A magnet 350 is coupled to the coupling groove 320.

The magnet 350 is positioned coupled to the inside of the coupling groove 320 formed by the weight body 310. The magnet 350 faces the coil 200 and may generate vibration through interaction with the coil 200.

The vibrator 300 generates vibration of the horizontal vibration device by interaction with the coil 200. Specifically, by the interaction of the magnet 350 and the coil 200, the vibrator 300 generates vibration in a first direction perpendicular to the vertical direction, and the weight 310 is formed of a magnetic material to reduce the influence of the magnetic field. It can provide additional stimulation.

The elastic body 400 is formed in the shape of scissors. The elastic body 400 is located between the inner surface of the housing 100 and the vibrator 300. The elastic body 400 includes a first elastic body 410 and a second elastic body 420, and each elastic body 400 is coupled to both sides of the vibrator 300 and the inner surface of the housing 100, respectively. Therefore, when the vibrator 300 vibrates in the first direction, elastic force is stably provided to the vibrator 300 from both sides. At this time, the present invention is not limited to the shape and number of elastic bodies 400.

The damper 500 is formed in the shape of a square pillar. The damper 500 is coupled to the side of the vibrator 300 to which the elastic body 400 is coupled. The damper 500 is made of a flexible material and provides a cushioning effect when the vibrator 300 hits the inner surface of the housing 100 due to vibration in the first direction. Therefore, the shape of the damper 500 may be deformed by external force.

The vibration guide unit 600 is located inside the housing 100. Specifically, the vibration guide unit 600 is located between the upper and lower inner surfaces of the housing 100 and the vibrator 300. The vibration guide unit 600 includes a first vibration guide unit 610 and a second vibration guide unit 620.

The first vibration guide unit 610 is formed as a square plate. The first vibration guide unit 610 is coupled to the inner upper surface of the housing 100. Specifically, the first vibration guide unit 610 is located between the inner upper surface of the housing 100 and the vibrator 300.

The second vibration guide portion 620 is formed as a square plate with a portion of the center protruding upward. The second vibration guide unit 620 is coupled to the inner lower surface of the housing 100. Specifically, the second vibration guide unit 620 is located between the inner lower surface of the housing 100 and the vibrator 300. The coil 200 may be accommodated in the space between the second vibration guide unit 620 and the inner lower surface of the housing 100.

Hereinafter, an embodiment of the present invention will be described with reference to FIG. 3.

Figure 3 is a cross-sectional view of a horizontal vibration device according to an embodiment of the present invention.

Referring to FIG. 3, the center of the first vibration guide unit 610 has an arch shape that is rounded downward. Both ends of the first vibration guide unit 610 are coupled to the inner upper surface of the housing 100, and the central portion is formed to be spaced apart from the inner upper surface of the housing 100.

The second vibration guide portion 620 has a central portion with a protrusion 621 that protrudes upward. Both ends of the second vibration guide unit 620 are coupled to the inner lower surface of the housing 100, and a protrusion 621 is formed that protrudes upward from the inner lower surface. The coil 200 may be accommodated in the space between the protrusion 621 of the second vibration guide portion 620 and the inner lower surface of the housing 100.

Due to the shape of the first vibration guide part 610 and the second vibration guide part 620 described above, the vibrator 300 is located at the center of the inner space of the housing 100. Therefore, when the vibrator 300 vibrates in the vertical direction rather than in the first direction, the vibration guide portion is located above and below the vibrator 300, thereby providing a buffering effect for the vertical vibration. Through this, the vibration guide unit 600 can guide the vibrator 300 so that vibration occurs in a direction other than the first direction.

The coil 200 is located between the second vibration guide part 620 and the housing 100. Specifically, the coil 200 may be accommodated between the protrusion 621 of the second vibration guide portion 620 and the inner lower surface of the housing 100. A portion of the protrusion 621 of the second vibration guide 620 may be recessed downward again. Due to the shape of the second vibration guide portion 620 in which a portion is recessed, the coil 200 coupled to the lower surface of the housing 100 has a gap between the second vibration guide portion 620 and the lower surface of the housing 100. They can be combined to minimize space. Additionally, the coil 200 may not be provided with a separate bobbin and may be wound multiple times around a shape in which a portion of the protrusion 621 is depressed downward. Therefore, the movement of the coil 200 due to external force can be minimized due to the structure in which the coil 200 is located between the second vibration guide part 620 and the housing 100.

The vibrator 300 generates vibration inside the horizontal vibration device. At this time, the direction of vibration can be guided through the vibration guide unit 600. Accordingly, the vibrator 300 can be suppressed from vibrating in a direction other than the first direction. The vibrator 300 includes a weight body 310 and a magnet 350.

The weight 310 includes a central portion 311, a first end 312, and a second end 313. The weight body 310 may be formed of a magnetic material. The magnetic material may preferably be a ferromagnetic material. For example, the magnetic material may be an iron core or ferrite. As the weight body 310 is formed of a magnetic material, the magnetic flux can be amplified. Therefore, when vibration occurs due to interaction between the coil 200 and the magnet 350, the amount of vibration can be improved.

A coupling groove 320 is formed in the central portion 311 of the weight body 310 on the surface opposite to the coil 200. The coupling groove 320 forms a bonding groove 321 that is recessed inside. The bonding groove 321 includes a bond portion 325 into which filler is injected. There is at least one bond portion 325 formed in the bonding groove 321, and it is located between the magnet 350 and the weight body 310, and can couple the weight body 310 and the magnet 350. At this time, the combined magnet 350 is formed to have an area equal to the area of the central portion 311 in the first direction. The bonding groove 321 is preferably formed in a cylindrical shape, but in some cases, it may have another shape such as a square pillar. Additionally, it is possible for the bonding groove 321 to be formed to protrude from the inside. In FIG. 3, the bonding grooves 321 have a cylindrical shape and are shown as two, but the present invention is not limited to the shape or number of the bonding grooves 321.

The first end 312 and the second end 313 are formed to be wider than the central portion 311 in the first direction. The detailed role and description of the first end 312 and the second end 313 will be described later in FIG. 4.

Hereinafter, an embodiment of the present invention will be described with reference to FIG. 4.

Figure 4 is a plan view of a horizontal vibration device according to an embodiment of the present invention.

Referring to FIG. 4, the vibrator 300 includes a weight body 310 and a magnet 350. The weight 310 has a dumbbell shape with both ends wide and the center narrow. Specifically, the weight body 310 includes a first end 312, a second end 313, and a central portion 311 sequentially continuous in the second direction. The area W2 of the first end 312 and the area W3 of the second end 313 of the weight body 310 are formed to be wider in the first direction than the area of the central part 311 (W1). The first end 312 and the second end 313 are formed to be wider than the central portion 311, thereby forming a dumbbell-shaped weight body 310 in which the central portion 311 is relatively narrow and both ends are wide. Accordingly, the weight body 310 forms a free space that appears to be sunken inward starting from the central portion 311.

A damper 500 is coupled to a side of the first end 312 to which the first elastic body 410 is not coupled and to a side of the second end 313 to which the second elastic body 420 is not coupled. The damper 500 is a member in the form of a square pillar made of a flexible material. The damper 500 can prevent the weight body 310 from directly colliding with the inner surface of the housing 100 when it vibrates in the first direction. Accordingly, the shape of the damper 500 may be deformed by external force. In some cases, the damper 500 may have a shape other than a square pillar. The present invention is not limited to the form of the damper 500.

The elastic body 400 includes a first elastic body 410 and a second elastic body 420. The first elastic body 410 is coupled to one of the sides of the vibrator 300, and the second elastic body 420 is coupled to the other side of the vibrator 300.

The first elastic body 410 is coupled to the first end 312 of the vibrator 300 and the inner surface of the housing 100 opposing the first end 312. At this time, the direction in which the first elastic body 410 is coupled corresponds to one end of the second direction. The first elastic body 410 includes a vibrator coupling portion 411, a connecting portion 415, and a housing coupling portion 419. The vibrator coupling portion 411 is coupled to the first end 312 of the vibrator 300. The connection portion 415 connects the vibrator coupling portion 411 and the housing coupling portion 419. The housing coupling portion 419 is coupled to the inner surface of the housing 100 opposite the first end 312. The connection portion 415 is formed shorter in the second direction than the point where the second end 313 of the weight body 310 starts. Specifically, it is formed so as not to deviate from the free space of the central portion 311 formed in the weight body 310. Accordingly, the first elastic body 410 faces the side surfaces of the first end 312 and the central part 311, but does not face the side surface of the second end 313.

When the vibrator 300 generates vibration and moves in the first direction, even if the vibrator 300 approaches the inner surface of the housing 100 to which the first elastic body 410 is coupled, the first elastic body 410 remains in the housing ( It is located between the inner surface of 100) and the free space of the weight body 310, so collision does not occur. This can generate strong vibration by providing clearance for the weight 310 to move in the first direction.

The second elastic body 420 is coupled to the second end 313 of the vibrator 300 and the inner surface of the housing 100 opposite to the second end 313. At this time, the direction in which the second elastic body 420 is coupled corresponds to the other end of the second direction. The second elastic body 420 includes a vibrator coupling portion 421, a connecting portion 425, and a housing coupling portion 429. The vibrator coupling portion 421 is coupled to the second end 313 of the vibrator 300. The connection portion 425 connects the vibrator coupling portion 421 and the housing coupling portion 429. The housing coupling portion 429 is coupled to the inner surface of the housing 100 opposite the second end 313. The connection portion 425 is formed shorter in the second direction than the point where the first end 312 of the weight 310 starts. Specifically, it is formed so as not to deviate from the free space of the central portion 311 formed in the weight body 310. Accordingly, the second elastic body 420 faces the side surfaces of the second end 313 and the central part 311, but does not face the side surfaces of the first end 312.

When the vibrator 300 generates vibration and moves in the first direction, even if the vibrator 300 approaches the inner surface of the housing 100 to which the second elastic body 420 is coupled, the second elastic body 420 remains in the housing ( It is located between the inner surface of 100) and the free space of the weight body 310, so collision does not occur. This can generate strong vibration by providing clearance for the weight 310 to move in the first direction.

Hereinafter, the elastic body 400 of the present invention will be described with reference to FIG. 5.

Figure 5 is a perspective view of the first elastic body 410 according to an embodiment of the present invention.

Referring to FIG. 5, the first elastic body 410 includes a vibrator coupling portion 411, an inner extension portion 413, a housing coupling portion 419, an outer extension portion 417, and a connection portion 415. The first elastic body 410 has a scissors shape.

The vibrator coupling portion 411 is coupled to the side of the first end 312 of the vibrator 300. Specifically, it is coupled to one of the two sides of the first end 312 of the vibrator 300. The inner extension portion 413 extends from the connection portion 415 toward the inside of the housing 100 and extends to the vibrator coupling portion 411. The outer extension portion 417 extends from the connection portion 415 toward the outside of the housing 100 and extends to the housing coupling portion 419. The housing coupling portion 419 is coupled to the inner surface of the housing 100. Specifically, the first elastic body 410 is coupled to the inner surface of the housing 100 opposite to the side of the first end 312 to which it is coupled.

One of the inner extension part 413 and the outer extension part 417 of the first elastic body 410 extends from the upper end of the connection part 415, and the other one of the inner extension part 413 and the outer extension part 417 extends from the bottom of the connection portion 415. Therefore, the inner extension part 413 and the outer extension part 417 extend from the connection part 415, and the connection part 415 is a connection point between the inner extension part 413 and the outer extension part 417, so the connection part 415 The area is equal to the area of the inner extension 413 and the outer extension 417 added together.

The length of the first elastic body 410 faces the side surfaces of the first end 312 and the central part 311, but does not face the side surfaces of the second end 313. Accordingly, the length in the second direction from one end of the first elastic body 410 to the other end is shorter than the point where the second end 313 of the weight body 310 is formed. Due to the structure of the first elastic body 410, the closer the vibrator 300 is to the inner surface of the housing 100 through strong vibration, the stronger the elastic force can be exerted to amplify or attenuate the first direction vibration of the vibrator 300. there is. In Figure 5, the vibrator coupling part 411 and the inner extension part 413 are shown as extended at the top, and the housing coupling part 419 and the outer extension part 417 are shown as extended at the bottom. However, the configuration of the top and bottom can be reversed.

Although not shown in FIG. 5, the second elastic body 420 includes a vibrator coupling portion 421, an inner extension portion 423, a housing coupling portion 429, an outer extension portion 429, and a connection portion 425. The second elastic body 420 has a scissors shape.

The vibrator coupling portion 421 is coupled to the side of the second end 313 of the vibrator 300. Specifically, it is coupled to one of the two sides of the second end 313 of the vibrator 300. The inner extension portion 423 extends from the connection portion 425 toward the inside of the housing 100 and extends to the vibrator coupling portion 429. The outer extension portion 427 extends from the connection portion 425 toward the outside of the housing 100 and extends to the housing coupling portion 429. The housing coupling portion 429 is coupled to the inner surface of the housing 100. Specifically, the second elastic body 420 is coupled to the inner surface of the housing 100 opposite to the side of the second end 313 to which it is coupled.

One of the inner extension part 423 and the outer extension part 427 of the second elastic body 420 extends from the upper end of the connection part 425, and the other one of the inner extension part 423 and the outer extension part 427 extends from the bottom of the connection portion 425. Therefore, the inner extension part 423 and the outer extension part 427 extend from the connection part 425, and the connection part 425 is a connection point between the inner extension part 423 and the outer extension part 427, so the connection part 425 The area is equal to the area of the inner extension 423 and the outer extension 427 added together.

The length of the second elastic body 420 faces the side surfaces of the second end 313 and the central part 311, but does not face the side surfaces of the first end 312. Accordingly, the length in the second direction from the direction of the other end where the second elastic body 420 is coupled to the direction of the first end is shorter than the point where the first end 312 of the weight body 310 is formed. Due to the structure of the second elastic body 420, the closer the vibrator 300 gets to the inner surface of the housing 100 through strong vibration, the stronger the elastic force can be exerted to amplify or attenuate the first direction vibration of the vibrator 300. there is.

Hereinafter, the operating state of the present invention will be described with reference to FIG. 6.

Figure 6 is a plan view of a horizontal vibration device according to the operation of the present invention.

Referring to FIG. 6, when the vibrator 300 vibrates, the coupling structure with the elastic body 400 and the inner surface of the housing 100 is maintained, but it vibrates in the first direction. When the vibrator 300 moves in the first direction, the vibrator coupling portion 411 of the first elastic body 410 corresponding to the moving first direction and the housing coupling portion 419 become close, and the moving first direction becomes closer to each other. The vibrator coupling portion 421 and the housing coupling portion 429 of the second elastic body 420 that do not correspond to the direction are spaced apart.

In this configuration, the first elastic body 410 provides elastic force in the direction in which the vibrator coupling portion 411 and the housing coupling portion 419 are spaced apart. The second elastic body 420 provides elastic force in the direction in which the vibrator coupling part 421 and the housing coupling part 429 approach each other. Therefore, force is provided in a direction opposite to the force moving the vibrator 300 in the first direction.

When the vibrator 300 vibrates, the movement direction in the above-described first direction is repeated in the direction of the first elastic body 410 and the second elastic body 420, and the elastic body 400 according to the vibration of the vibrator 300 generates elastic force. It is possible to amplify or attenuate the vibration of the horizontal vibration device.

In addition, even if the vibrator 300 approaches the inner surface of the housing 100 to which the first elastic body 410 is coupled, the connection portion 415 of the first elastic body 410 is connected to the inner surface of the housing 100 and the weight ( Since it is located between the free spaces of 310, collision with the inner surface of the vibrator 300 and the housing 100 does not occur. This provides a clearance for the vibrator 300 to move in the first direction, thereby generating stronger vibration.

The damper 500 is coupled to a side of the vibrator 300 to which the elastic body 400 is not coupled. Although not shown in FIG. 6, even if either the first end 312 or the second end 313 of the vibrator 300 collides with the inner surface of the housing 100, it is directly transmitted through the coupled damper 500. The vibrator 300 can be prevented from colliding with the housing 100. Specifically, the damper 500 is made of a flexible material and can change its shape by external force. When the vibrator 300 approaches the inner surface of the housing 100 due to strong vibration and collides with it, the vibrator ( A buffering action may be performed between the 300) and the housing 100. This structure prevents direct collision between the vibrator 300 and the housing 100 of the horizontal vibration device, thereby increasing the durability of the horizontal vibration device and preventing the generation of unnecessary noise.

The above-described horizontal vibration device can provide vibration in the horizontal direction. In general, vibration generated by a vibrator occurs in all directions, so vibration may occur in an undesirable direction. The horizontal vibration device of the present invention can amplify or attenuate vibration in the horizontal direction through an elastic body when the vibrator vibrates. Vibration in the vertical direction is alleviated through the vibration guide part, and vibration is induced to enable vibration in the horizontal direction.

In addition, the above-described horizontal vibration device can prevent the vibrator from directly hitting the inner surface of the housing while providing vibration in the horizontal direction. This has the advantage of increasing the lifespan of the elements that make up the horizontal vibration device and generating strong vibration by increasing the vibration distance.

Above, embodiments of the horizontal vibration device of the present invention have been described. The technical features disclosed in each embodiment of the present invention are not limited to the corresponding embodiment, and unless they are incompatible with each other, the technical features disclosed in each embodiment may be combined and applied to other embodiments.

Therefore, in each embodiment, each technical feature is mainly explained, but unless the technical features are incompatible with each other, they can be applied in combination with each other.

The present invention is not limited to the above-described embodiments and the accompanying drawings, and various modifications and variations will be possible from the perspective of those skilled in the art to which the present invention pertains. Therefore, the scope of the present invention should be determined not only by the claims of this specification but also by equivalents to these claims.

100: housing
110: bracket
120: cover
200: coil
210: Flexible circuit board
300: Vibrator
310: heavy body
311: central part
312: first end
313: second end
320: Combination groove
350: Magnet
400: elastic body
410: first elastic body
411: Vibrator coupling part
413: medial extension
415: connection
417: Outer extension
419: housing joint
420: second elastic body
500: damper
600: Vibration guide part
610: First vibration guide part
620: Second vibration guide part

Claims (12)

A housing having an internal space;
a coil located in the interior space and coupled to the lower surface of the housing;
A vibrator located above the coil in the internal space and including a weight body with a coupling groove formed on a surface opposing the coil and a magnet inserted into the coupling groove and facing the coil - the vibrator is a weight body that is positioned above the coil and has a coupling groove formed on a surface opposite the coil. Vibrates in a first direction perpendicular to the up and down direction due to interaction between -; and
An elastic body including first and second elastic bodies respectively coupled to both sides of the vibrator,
The weight body is,
a central portion extending in a second direction perpendicular to the vertical direction and the first direction; and
A first end and a second end extending from the central portion in the second direction and formed to be wider than the central portion in the first direction,
The first elastic body,
A vibrator coupling portion coupled to a side of the first end;
It includes a housing coupling portion coupled to an inner surface of the housing facing the first end,
The first elastic body faces the side surfaces of the first end and the central portion, but does not face the side surface of the second end,
The second elastic body,
A vibrator coupling portion coupled to a side of the second end; and
It includes a housing coupling portion coupled to an inner surface of the housing facing the second end,
The second elastic body faces the side surfaces of the second end and the central portion, but does not face the side surface of the first end.
Horizontal vibrating device. According to claim 1,
At least one of the first and second elastic bodies,
connection;
an inner extension part extending from the connection part in an inner direction of the housing to the vibrator coupling part; and
An outer extension part extends from the connection part to the outside of the housing and extends to the housing coupling part.
Horizontal vibrating device. According to clause 2,
One of the inner extension part and the outer extension part extends from the top of the connection part,
The other one of the inner extension and the outer extension extends from the bottom of the connection part.
Horizontal vibrating device. According to clause 2,
The connection portion corresponds to one end in the second direction of at least one of the first and second elastic bodies,
At least one of the vibrator coupling portion and the housing coupling portion corresponds to the other end of at least one of the first and second elastic bodies in the second direction.
Horizontal vibrating device. According to claim 1,
The housing is,
A bracket including a lower surface and two sides extending from the lower surface; and
It is coupled to the bracket and includes a cover including an upper surface and two sides extending from the upper surface.
Horizontal vibrating device. According to claim 1,
The weight body is formed of a magnetic material.
Horizontal vibrating device. According to claim 1,
The weight body includes a bonding groove formed inside the coupling groove and a bond portion filled in the bonding groove,
The bond unit combines the weight and the magnet.
Horizontal vibrating device. According to claim 1,
The magnet is formed to have an area equal to the area of the central portion in the first direction.
Horizontal vibrating device. According to claim 1,
It is coupled to a portion of the sides of the first and second ends of the weight body to which the first and second elastic bodies are not coupled, and further includes a damper formed of a flexible material.
Horizontal vibrating device. According to claim 1,
A first vibration guide unit coupled to the inner upper surface of the housing; and
Further comprising a second vibration guide coupled to the inner lower surface of the housing,
The first and second vibration guide units guide the vibration of the vibrator in the first direction.
Horizontal vibrating device. According to claim 10,
Both ends of the first vibration guide part are coupled to the inner upper surface, and the center between the two ends is formed to be spaced apart from the inner upper surface.
Horizontal vibrating device. According to claim 10,
The second vibration guide part includes a protrusion protruding upward from the inner lower surface,
The coil is accommodated in the space between the protrusion and the inner lower surface.
Horizontal vibrating device.

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