WO2021137458A2

WO2021137458A2 - Dual vibration device

Info

Publication number: WO2021137458A2
Application number: PCT/KR2020/017703
Authority: WO
Inventors: 김동만
Original assignee: (주) 인오디오
Priority date: 2019-12-30
Filing date: 2020-12-04
Publication date: 2021-07-08
Also published as: KR20210084991A; KR102379533B1; KR20210100047A; WO2021137458A3; KR102631328B1

Abstract

A dual vibration device according to an embodiment of the present invention may comprise: a frame; a pair of vibration drivers which are disposed symmetrically to each other inside the frame and vibrate up and down through a magnetic circuit; a signal providing unit which is disposed between the pair of vibration drivers so as to provide an electrical signal to the pair of vibration drivers; and a suspension which connects the frame and the vibration drivers to each other so as to transmit vertical vibration of the vibration drivers to the frame, wherein the suspension may comprise upper and lower suspensions which connect the upper and lower portions of the vibration drivers to the frame, respectively.

Description

dual vibrating device

The present invention relates to a dual vibration device, and more particularly, to a dual vibration device capable of generating stereo sound or strong vibration by arranging two vibration drivers on the left and right.

The vibration driver refers to a device for transmitting vibration to a vibration target.

Conventionally, a vibrating driver that removes a diaphragm from a so-called cone-type speaker device and directly attaches either a circular magnet or a circular voice coil to a vibrating object has been used.

When the size of the unit of the vibration driver is large, the cone-type vibration driver has a problem in that it is difficult to efficiently transmit vibration energy because the body becomes larger in a circular shape to maintain the circular structure, and the weight increases, and the reaction speed is slowed. In addition, the bonding force of the bobbin itself is weak compared to its weight, so there is a problem in that the vibrating driver falls off the vibrating object after long-term use.

Korean Patent Laid-Open Publication No. 10-2019-0099775 discloses a 'stick-type vibration driver' that transmits vibration to a vibration target using a flat movable coil plate and a rod-type magnet.

Korean Patent Laid-Open Publication No. 10-2019-0099775 applied a rod-type magnet to overcome the disadvantages of the cone-type vibration driver, but the size of the rod-type magnet is limited by the volume of the slim vibration driver, and thus the size of the magnetic field is reduced. There is a disadvantage in that sufficient magnetic field energy cannot be secured.

If a thick bar magnet is applied to overcome the disadvantages of the stick-type vibration driver, the weight of the magnetic circuit increases as well as the manufacturing cost, and the induced electromotive force generated by the voice coil and the magnetic field due to the increase in the weight of the magnetic circuit is reduced. The same disadvantage as the cone-type vibration driver, which is difficult to efficiently convert into vibration energy, may occur.

[Prior art literature]

[Patent Literature]

(Patent Document 1) 1. Patent Document: Korean Patent Laid-Open Publication No. 10-2014-0136137 (2014.11.28)

(Patent Document 2) 2. Patent Document: Korean Patent Publication No. 10-2019-0099775 (2019.08.28)

The present invention was derived to solve the above problems, and while reducing the volume and weight, it provides a dual vibration device capable of providing various vibrations and sounds, including a pair of vibration drivers capable of efficiently converting and transmitting vibration energy. The purpose is to implement it.

A dual vibration device according to an embodiment of the present invention includes a frame; a pair of vibration drivers disposed symmetrically within the frame and oscillating up and down by a magnetic circuit; a signal providing unit disposed between the pair of vibration drivers to provide an electrical signal to the pair of vibration drivers; and a suspension connecting the frame and the vibration driver and transmitting vertical vibrations of the vibration driver to the frame, wherein the suspension includes: an upper suspension connecting upper and lower portions of the vibration driver to the frame, respectively; and a lower suspension.

In addition, the upper suspension may include a first suspension connecting the front end and the rear end of the vibration driver to the frame, respectively; and a second suspension, wherein the lower suspension includes: a third suspension connecting front and rear ends of the vibration driver to the frame, respectively; and a fourth suspension.

In addition, the vibration driver includes a pair of magnetic bodies; and magnetic guides connected to both ends of the pair of magnetic bodies and the suspension, respectively, to maintain a separation distance between the magnetic bodies, and to float the pair of magnetic bodies in the air at a predetermined position inside the frame; may include.

In addition, the frame may include a main frame to which the pair of vibration drivers and the signal providing unit are fixed; an upper frame disposed above and below the main frame to seal the main frame; and a lower frame.

In addition, the main frame may include a first fixing unit to which the signal providing unit is fixed; a second fixing part disposed on the left and right sides of the first fixing part to which the pair of vibration drivers are respectively fixed; and a third fixing part, wherein the second and third fixing parts may be arranged to be spaced apart from each other by an equidistant centering on the first fixing part.

In addition, the lower frame fixes the upper part of the voice coil plate so that the voice coil plate is disposed in the center of the pair of magnetic bodies, and the lower frame is the voice coil plate so that the voice coil plate is disposed in the middle of the pair of magnetic bodies. The lower part of the coil plate can be fixed.

In addition, the suspension may be formed in a “W” shape or a “C” shape, and may include a first suspension line, a center fixing part, and a second suspension line.

In addition, front ends of each of the first suspension line and the second suspension line may be connected to the second fixing part and the third fixing part, respectively, and the center fixing part may be connected to the magnetic guide.

In addition, the signal providing unit is a rechargeable battery; and an amplifier board that receives a current from the rechargeable battery and controls an electrical signal to provide it to the pair of vibration drivers.

In addition, the frame may include a; a state display unit for displaying the charging state of the rechargeable battery and the operation mode of the dual vibration device.

In addition, the dual vibration device includes a vibration mode for generating vibration by providing vibration energy to a vibration target, a sound mode for providing sound by using the vibration target as a diaphragm through the vibration energy provided to the vibration target, a specific stored in memory It is possible to provide any one of the vibration effect modes in which a signal is amplified at a specific period to transmit specific vibration energy to the vibration target.

It is possible to generate a large magnetic field compared to the volume of the magnet, thereby reducing the volume, weight and production cost of the dual vibrating device.

Vibration efficiency can be increased by reducing the weight of the vibration driver and increasing the response speed of the vibration driver even when inputting mid- and high-frequency signals.

Various vibrations or sounds can be provided by individually providing electrical signals to a pair of vibration drivers.

The dual vibrating device can provide vibration or sound according to the shape and area of the vibrating object, so that the effects of the vibrating device and the sound device can be expected as one device.

By applying a fixing member to the dual vibration device, it is easy to install even in a narrow space, and there is no need for a separate configuration for fixing.

However, the effects of the present invention are not limited to the above effects, and may be variously expanded without departing from the spirit and scope of the present invention.

1 is a perspective view of a dual vibration device according to a first embodiment of the present invention. (Upper frame not shown)

FIG. 2 is a plan view of FIG. 1 .

3 is a perspective view of a main frame according to a first embodiment of the present invention.

4 is a perspective view of an upper frame (lower frame) according to a first embodiment of the present invention.

5 is a perspective view of a vibration driver according to a first embodiment of the present invention.

6 is an exploded perspective view of FIG. 5 .

7 is a perspective view of a dual vibration device according to a second embodiment of the present invention. (Upper frame not shown)

FIG. 8 is a plan view of FIG. 7 .

9 is a perspective view of a main frame according to a second embodiment of the present invention.

10 is a perspective view of a vibration driver according to a second embodiment of the present invention.

11 is an exploded perspective view of FIG. 12 ;

12 is a cross-sectional view taken along line A-A of FIG. 10 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of the present invention set forth below refers to the accompanying drawings, which show by way of illustration specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scope equivalents to those as claimed. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of specific embodiments shown in the accompanying drawings is read in conjunction with the accompanying drawings, which are considered to be part of the entire description of the invention. References to directions or directions are for convenience of description only, and are not intended to limit the scope of the present invention in any way.

Specifically, terms indicating positions such as "down, up, horizontal, vertical, upper, lower, upward, downward, upper, lower", or derivatives thereof (for example, "horizontally, downwardly, upwardly") etc.) should be understood with reference to both the drawings and related descriptions being described. In particular, since these relative words are only for convenience of description, it is not required that the device of the present invention be configured or operated in a specific direction.

In addition, terms indicating a mutual coupling relationship between components such as "mounted, attached, connected, connected, interconnected", unless otherwise specified, refer to a state in which individual components are directly or indirectly attached, connected, or fixed. may mean, and this should be understood as a term encompassing not only a state in which it is movably attached, connected, and fixed, but also a state in which it cannot be moved.

In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a perspective view of a dual vibration device (hereinafter referred to as a vibration device) according to a first embodiment of the present invention (the upper frame 120 is not shown), and FIG. 2 is a plan view of FIG. 1 .

1 and 2 , the vibrating device according to the first embodiment of the present invention includes a frame 100 and a pair of vibrating drivers that are symmetrically disposed inside the frame 100 and vibrate up and down by a magnetic circuit. 200, a voice coil plate 500 disposed between the magnetic body of the vibration driver 200 and fixed up and down by the frame 100, a voice coil plate 500 disposed between a pair of vibration drivers 200 ) includes a signal providing unit 300 for providing an electrical signal, a suspension 400 that connects the frame 100 and the vibration driver 200, and transmits the vertical vibration of the vibration driver 200 to the frame 100 can do.

진동 드라이버(200)Vibration Driver(200)

5 is a perspective view of the vibration driver 200 and the suspension 400 according to the first embodiment of the present invention, and FIG. 6 is an exploded perspective view of FIG. 5 .

5 and 6 , the vibration driver 200 may include a magnetic guide 230 connected to both ends of a pair of magnetic bodies, respectively, to maintain a separation distance between the pair of magnetic bodies. .

The suspension 400 is connected to the magnetic guide 230 connected to both ends of the magnetic body, so that the vibration driver 200 can be suspended in the air at a predetermined position inside the frame 100 .

Referring to FIGS. 1, 2, 5 and 6 , the magnetic body includes a magnet 220 disposed in parallel on both sides around the voice coil plate 500 , and a first disposed on the upper and lower surfaces of the magnet 220 . It may include a yoke 210 .

The first yoke 210 may have a “-” shape in cross section, and may include at least one magnet fixing part 211 protruding to prevent contact between the magnets 220 by attractive force.

The magnet fixing part 211 may be disposed on a side surface adjacent to the side part of the voice coil plate 500 .

The magnetic guide 230 may be disposed at the front end and the rear end of the pair of magnetic bodies, respectively.

The magnetic guide 230 includes a magnetic body fixing part 231 to which one side of the first yoke 210 is fixed, a suspension fixing part 232 to which the center fixing part CF of the suspension 400 is fixed, an assembly jig and It may include a jig guide part 233 to be fastened.

Since the magnetic guide 230 is manufactured through injection molding, the weight of the vibration driver 200 may be reduced, and finally, the vibration efficiency of the vibration driver 200 may be increased.

The magnetic body fixing part 231 is symmetrically disposed on the upper and lower surfaces of the magnetic guide 230 , and the upper surface of the first yoke 210 is disposed on the upper surface of the magnet 220 in the assembled state of the vibration driver 200 . And the lower surface of the first yoke 210 disposed on the lower surface of the magnet 220 may be exposed.

The suspension fixing part 232 may include a seating surface recessed so that the suspension 400 is seated, and a fastening hole penetrating to be fastened to the suspension 400 .

The suspension fixing part 232 may be symmetrically disposed on the upper and lower surfaces of the magnetic guide 230 .

The seating surface may be recessed to correspond to the shape of the center fixing part CF of the suspension 400 to be described later.

The jig guide part 233 is formed to protrude in the opposite direction of the body, and may include a fastening hole for fastening with the assembly jig.

As the volume of the vibration driver 200 decreases, the volume of the components of the vibration driver 200 also decreases. In particular, the magnetic guide 230 is made of a plastic material and is not only light in weight, but also has a small volume for assembly with a magnetic body. An assembly jig may be used.

More specifically, the assembly jig is inserted into the fastening hole of the jig guide part 233 to fix the magnetic guide 230 in the height direction, and the magnetic guide 230 fixed in the height direction is inserted in the horizontal direction. By allowing the end of the first yoke 210 to be disposed on the magnetic body fixing part 231 of the magnetic guide 230, the magnetic guide 230 and the magnetic body may be guided to be fastened at the correct position.

서스펜션(400)Suspension(400)

5 and 6 , the suspension 400 may include an upper suspension and a lower suspension that connect the upper and lower portions of the vibration driver 200 to the frame 100 , respectively.

The upper suspension and the lower suspension may be in the form of thin plates made of a metal material having elasticity.

The upper suspension is disposed on the suspension fixing part 232 of the upper surface of the vibration driver 200, that is, the upper surface of the magnetic guide 230, and connects the front and rear ends of the vibration driver 200 to the frame 100, respectively. It may include a first suspension 410 and a second suspension 420 .

The lower suspension is disposed on the suspension fixing part 232 of the lower part of the vibration driver 200 , that is, the lower surface of the magnetic guide 230 , and connects the front and rear ends of the vibration driver 200 to the frame 100 , respectively. It may include a third suspension 430 and a fourth suspension 440 .

The first suspension 410 and the second suspension 420 surround the front and rear ends of the upper portions of the pair of magnetic bodies, respectively, and the third and

fourth suspensions

430 and 440 are the lower portions of the pair of magnetic bodies. It may be arranged to surround the front end and the rear end, respectively.

That is, one vibration driver 200 may be connected to the frame 100 by a total of four suspensions 400 .

The first to fourth suspensions 410 to 440 may be formed in a “C” shape, and may include a first suspension line L1 , a center fixing part CF and a second suspension line L2 .

The front ends of each of the first suspension line L1 and the second suspension line L2 are connected to a main frame 110 to be described later, and the center fixing part CF is a suspension fixing part 232 of the magnetic guide 230 . can be connected to

The first to fourth suspensions 410 to 440 may include a configuration for fastening with the main frame 110 or the magnetic guide 230 .

1, 2, 5 and 6 show a case in which a fastening hole is provided in the suspension 400 for fastening between the suspension 400 and the main frame 110, and the suspension 400 and the magnetic guide 230. Although illustrated, this is an embodiment, and the present invention does not limit the configuration and fastening method for fastening the suspension 400 and the main frame 110 , and the suspension 400 and the magnetic guide 230 .

That is, each of the first suspension line L1 , the center fixing part CF, and the second suspension line L2 may include a hole, a groove, or a protrusion corresponding to the structure and position of the opponent.

The first suspension line L1 may be spaced a predetermined distance from the side surface of the adjacent magnetic body, and the second suspension line L2 may be spaced a predetermined distance from the side surface of the adjacent magnetic body.

That is, the first suspension line L1 and the second suspension line L2 may be disposed parallel to the side surface of the adjacent vibration driver 200 .

The distance between the first suspension line (L1) and the side of the adjacent magnetic body, and the second suspension line (L2) and the distance between the adjacent side of the magnetic body are the vibration driver ( 200 ) and the suspension 400 may be a distance to avoid collision.

Accordingly, the distance between the first suspension line (L1) or the second suspension line (L2) and the side surface of the body is the length of the first suspension line (L1) or the second suspension line (L2), the first to fourth suspensions ( 410 to 440) may be changed and applied in consideration of the material and thickness of the vibration driver 200, and the like.

보이스 코일판(500)Voice Coil Board (500)

The voice coil plate 500 may be vertically erected between a pair of magnetic bodies.

A copper foil (not shown) is disposed at a predetermined position of the voice coil plate 500 , and an electrical signal may be input to the copper foil by being connected to a lead wire introduced from the outside, that is, a lead wire of the signal providing unit 300 .

신호 제공부(300)Signal providing unit 300

1 and 2, the signal providing unit 300 receives a current from a rechargeable battery 310 (hereinafter referred to as a battery) and the battery 310 and an amplifier Board 320 for controlling an electrical signal (frequency). ) may be included.

An electrical signal controlled by the amplifier board 320 may be provided to the vibration driver 200 to vibrate the vibration driver 200 up and down.

프레임(100)frame(100)

3 is a perspective view of the main frame 110 according to the first embodiment of the present invention, and FIG. 4 is a perspective view of the upper frame 120 (lower frame 130 ) according to the first embodiment of the present invention.

The frame 100 includes a main frame 110 to which a pair of vibration drivers 200 and a signal providing unit 300 are fixed, and is respectively disposed on the upper and lower portions of the main frame 110 to seal the main frame 110 . It may include an upper frame 120 and a lower frame 130 .

Referring to FIG. 3 , the main frame 110 is a first fixing unit 115 to which the signal providing unit 300 is fixed. It may include a second fixing part 119 and a third fixing part disposed on the left and right of the first fixing part 115 to which a pair of vibration drivers 200 are fixed, respectively.

The second fixing part 119 and the third fixing part may be disposed to be equidistantly spaced apart from the first fixing part 115 as the center.

1, 2 and 3 , since the second fixing part 119 and the third fixing part have the same shape having the same configuration, a description of the third fixing part will be omitted.

The first fixing part 115 includes a parallel movement limiting part 111 for limiting parallel movement of the battery 310 , a vertical movement limiting part 112 for limiting vertical movement of the battery 310 and an amplifier Board 320 . It may include a board seating part 113 to be seated.

The parallel movement limiter 111 may be formed to surround a portion of a lower surface of the battery 310 and a portion of a side surface of the battery 310 .

The vertical movement limiter 112 includes at least two locking

posts

112a and 112b, and one end of the locking

posts

112a, 112b is fixed to the parallel movement limiter 111 and the other end is formed to protrude inward, so that the battery It may be formed to hang on the edge of the upper surface of the 310 .

The second fixing part 119 connects a plurality of fastening posts 116 fastened to the suspension 400, the fastening posts 116 and the fastening posts 116, and the fastening posts 116 and the main frame 110. A plurality of connecting bars 117 may be included.

The number of fastening posts 116 may vary depending on the arrangement of the upper suspension and the lower suspension.

As shown in FIGS. 1, 2 and 5 , when the upper suspension and the lower suspension are vertically symmetrical, the second fixing part 119 is a fastening point between the upper or lower suspension and the second fixing part 119 . As many fastening columns 116 may be included.

That is, the second fixing part 119 may include four fastening pillars 116 .

However, the number of fastening posts 116 of the second fixing part 119 corresponds to the fastening holes of the suspension 400 , and the present invention does not limit the number of fastening posts 116 , and the number of fastening posts 116 of the suspension 400 is not limited. It can be applied in various ways depending on the shape and arrangement, the position and number of fastening holes.

In addition, as described above, since the vibration driver 200 has to be suspended at a predetermined height by fastening the suspension 400 to the second fixing part 119 , the fastening column 116 is higher than the upper surface of the main frame 110 . It may be low and may be disposed at a position higher than the lower surface of the main frame 110 .

In addition, the main frame 110 may include a state display unit for displaying the charging state of the battery 310 and the operation mode of the vibration device.

The status display unit may indicate the amount of charge of the battery 310 or indicate whether the vibration device is in a vibration mode, a sound mode, or a vibration effect mode.

At this time, the vibration mode is to generate vibration by providing vibration energy to the vibration target, the sound mode is a mode to provide sound by using the vibration target as a diaphragm through the vibration energy provided to the vibration object, and the vibration effect mode is stored in the memory. It may be a mode in which a specific signal is amplified in a specific period to transmit specific vibration energy to a vibration target.

4, the upper frame 120 (lower frame 130) is to fix the upper (lower) of the voice coil plate 500 so that the voice coil plate 500 is arranged in the center of the pair of magnetic bodies. It may include an upper fixing part 121 (lower fixing part 131).

4 shows an upper fixing part 121 (lower fixing part 131) protruding so that the upper part (lower part) of the voice coil plate 500 is inserted and fixed, but this is an embodiment and the present invention is an upper frame ( 120) (lower frame 130) is not limited to the fixing method of the voice coil plate 500.

That is, the upper fixing part 121 (lower fixing part 131 ) is recessed or protruded so that the upper part (lower part) of the voice coil plate 500 is inserted, or the upper part of the voice coil plate 500 by a separate configuration. (lower) can be fixed.

In addition, the upper fixing part 121 (the lower fixing part 131) may further include a fixing member (not shown) for fixing the vibrating device to the vibrating object, and as a fixing member, a suction pad, double-sided tape, Velcro tape, etc. this can be used

On the other hand, the vibration device according to the present invention can provide not only vibration but also sound to the vibration target.

As described above, the vibrating device according to the present invention provides a vibration mode for generating vibration by providing vibration energy to a vibration target, a sound mode for providing sound by using the vibration target as a diaphragm through the vibration energy provided to the vibration target, and a memory. It may include a vibration effect mode in which the stored specific signal is amplified at a specific period to deliver specific vibration energy to the vibration target, and vibration or sound may be provided to the vibration target through any one selected mode among them.

In addition, the vibrating device according to the present invention can be transmitted to the vibrating object in a different form depending on the shape or area of the vibrating object.

For example, when the vibrating device is mounted on a vibrating object having a flat and large area, such as a glass window or a table, the vibrating object itself acts as a diaphragm and the vibration of the vibrating driver 200 can be reproduced as sound.

For example, when the vibrating device is mounted on a curved and narrow vibration target such as a body, the vibration driver 200 may transmit vibration to the vibration target.

In addition, the vibration device according to the present invention can be implemented as a wearable vibration device mounted on a jacket or a back pack for game users.

When this wearable vibration device is worn together with a VR device that provides video and sound, game users can experience more realistic play because they receive video and sound as well as vibration.

7 is a perspective view (the upper frame not shown) of a dual vibration device (hereinafter referred to as a vibration device) according to a second embodiment of the present invention, and FIG. 8 is a plan view of FIG. 7 .

7 and 8 , the vibrating device according to the second embodiment of the present invention includes a frame 100 ′ and a pair of symmetrical structures disposed inside the frame 100 ′ and vibrating up and down by a magnetic circuit. The vibration driver 200', the voice coil plate 500 disposed between the magnetic body of the vibration driver 200' and fixed vertically by the frame 100', and a pair of vibration drivers 200' The signal providing unit 300 for providing an electrical signal to the voice coil plate 500, the frame 100' and the vibration driver 200' are connected, and the vertical vibration of the vibration driver 200' is applied to the frame 100'. ) may include a suspension 400' to deliver.

1 and 2 and 7 and 8 , the second embodiment has the same configuration as the first embodiment except for the main frame 110 ′, the vibration driver 200 ′, and the suspension 400 ′. it can be seen that

Therefore, the description of the same configuration as that of the first embodiment will be omitted.

진동 드라이버(200')Vibration Driver (200')

10 is a perspective view of a vibration driver 200 ′ according to a second embodiment of the present invention, FIG. 11 is an exploded perspective view of FIG. 10 , and FIG. 12 is a cross-sectional view taken along line A-A of FIG. 10 .

7, 8, and 10 to 12, the vibration driver 200' is connected to both ends of a pair of magnetic bodies, respectively, and a magnetic guide ( 230').

A suspension 400' is connected to the magnetic guide 230' connected to both ends of the magnetic body, so that the vibrating driver 200' can be suspended in the air at a predetermined position inside the frame 100'.

The magnetic body may include a magnet 220 disposed side by side on both sides of the voice coil plate 500 and a yoke disposed on upper and lower surfaces of the magnet 220 .

The yoke may include a first yoke 210 having a “-” shape in cross section and a second yoke 240 having a “b” shape in cross section.

The first yoke 210 may include at least one magnet fixing part 211 protruding to prevent contact between the magnets 220 by attractive force, and the magnet fixing part 211 may include the voice coil plate 500 . It may be disposed on the side of the first yoke 210 adjacent to the side of the.

The second yoke 240 may include a base portion 241 in contact with the magnet 220 and a bent portion 242 bent in a direction perpendicular to the base portion 241 .

The bent portion 242 is positioned adjacent to the side portion of the voice coil plate 500 and may be bent to face the opposite direction to the magnet 220 .

That is, when the second yoke 240 is positioned on the upper surface of the magnet 220 , the bent portion 242 is bent upward, and the second yoke 240 is positioned on the lower surface of the magnet 220 . In this case, the bent portion 242 may be bent in the downward direction.

12, the upper surface or lower surface of the first yoke 210 and the front end surface of the bent portion 242 of the second yoke may lie on the same horizontal extension line, and the upper surface or lower surface of the first yoke 210 and the second yoke 210 2 As the front end surfaces of the bent portions 242 of the yoke 240 are placed on the same horizontal extension line, the magnets 220 on both sides of the voice coil plate 500 may be disposed at different vertical positions.

In addition, the first yoke 210 is disposed on the N pole or S pole face of the magnet 220, the second yoke 240 is disposed on the S pole or N pole face of the magnet 220, the first yoke ( 210 and the second yoke 240 may be disposed so that different polarities are opposite to each other.

Preferably, the first yoke 210 is disposed on the N-pole side of the magnet 220 , and the second yoke 240 is disposed on the S-pole side of the magnet 220 , so that the first yoke 210 of a narrow area is disposed. ), by allowing the magnetic field to move to the second yoke 240 having a large area, it is possible to effectively improve the magnetic field circulation.

In more detail, the magnetic field flows from the N pole to the S pole, and the magnetic field starting from the N pole has a property of sticking to the nearest S pole in terms of distance, so the area is narrow compared to that of the second yoke 240 (S pole). The magnetic field (in the present invention) starting from the first yoke 210 (N pole) is activated more strongly than the magnetic field flowing from the N pole to the S pole of the same area (conventional), and may be spread widely.

This widely spread magnetic field is attached to the second yoke 240 disposed on the opposite side with respect to the nearest S pole, that is, the voice coil plate 500, and the second yoke 240 has a large area of the bent portion 242. The magnetic field transferred from the first yoke 210 can be widely received by using the yoke to facilitate the circulation of the magnetic field.

The yoke is disposed on the upper and lower surfaces of the magnet 220 to have the same polarity as the contact magnet 220 .

Accordingly, the vibration driver 200 ′ according to an embodiment of the present invention can be expected to have the same performance as using the magnet 220 having the size of the pole expanded by changing the cross section of the yoke.

That is, according to the present invention, while having the same performance as using the magnet 220 having the S pole or the N pole of the thickness added by the height of the bent portion 242 of the second yoke 240, the actually applied magnet ( 220) is small, so not only can the manufacturing cost be reduced, but the weight of the vibration driver 200' is also reduced, so that the response speed of the vibration driver 200' to the mid- and high-frequency input signals is increased, and finally the vibration driver ( 200') can be improved.

10 and 11 , the magnetic body guide 230 ′ may include a magnetic body fixing part 231 ′, a suspension fixing part 232 ′, and a jig guide part 233 .

The suspension fixing part 232 ′ may include a seating surface recessed to seat the suspension 400 ′ and a fastening hole penetrating to be fastened to the suspension 400 ′.

At least one fastening hole may be disposed on the seat surface, and when there is one fastening hole, it is formed to protrude in the thickness direction of the suspension 400' and penetrates the suspension 400' to prevent rotation of the suspension 400'. It may further include an anti-rotation guide to prevent.

The seating surface may be recessed to correspond to the shape of the center fixing part CF of the suspension 400 ′, and may be disposed on a plane of the magnetic guide 230 ′ adjacent to the second yoke 240 .

That is, with respect to the voice coil plate 500 , the second yoke 240 is positioned on the upper surface of the magnet 220 , the upper surface of one side of the magnetic guide 230 ′ to which the magnetic body is fixed, and the second yoke 240 . ) may be disposed on the lower surface of the other side of the magnetic guide 230 ′ to which the magnetic body positioned on the lower surface side of the magnet 220 is fixed.

At least one anti-rotation guide may be disposed on the seat surface.

The anti-rotation guide not only prevents the suspension 400' from rotating on the seat surface, but also allows the suspension 400' to be seated in the correct position on the seat surface, thereby fastening the suspension 400' and the magnetic guide 230'. It is possible to omit the cumbersome position adjustment process when the suspension 400 ′ is fastened to the main frame 110 ′ as well as at the time of operation.

The magnetic body fixing part 231' is a first yoke fixing part 231b fixing one side of the first yoke 210, and a second yoke high fixing part 231b fixing one side of the base part 241 of the second yoke 240. It may include a government 231a.

As described above, in the case of the magnetic body of the second embodiment, since different types of yokes are disposed to face each other on the left and right with respect to the voice coil plate 500, the magnetic body fixing unit 231 ′ is also asymmetrically symmetrical to the left and right to correspond thereto. can be formed.

That is, on one side of the magnetic body guide 230 ′ to which the second yoke 240 is located on the upper surface of the magnet 220 with respect to the voice coil plate 500 is fixed, the second yoke fixing part 231a) is disposed on the upper side, the second yoke 240 is the second yoke fixing part 231a on the other side of the magnetic body guide 230' to which the magnetic body positioned on the lower side of the magnet 220 is fixed to the lower side. can

서스펜션(400')Suspension (400')

The suspension 400 ′ is formed in a “W” shape, and may include a first suspension line L1 , a center fixing part CF and a second suspension line L2 .

10 and 11 , the suspension 400 ′ may include an upper suspension and a lower suspension connecting the upper and lower portions of the vibration driver 200 ′ to the frame 100 ′, respectively.

The upper suspension may include a first suspension 410 ′ and a second suspension 420 ′ connecting the front and rear ends of the vibration driver 200 ′ to the main frame 110 ′, respectively.

The lower suspension may include a third suspension 430 ′ and a fourth suspension 440 ′ respectively connecting the front and rear ends of the vibration driver 200 ′ to the frame 100 ′.

The center fixing part CF of the third suspension 430' and the fourth suspension 440' is positioned and fixed on the first line of the lower side of the vibration driver 200', and the first suspension 410' and the first suspension 410' 2 The center fixing part CF of the suspension 420 ′ may be positioned and fixed on the second line of the upper side of the vibration driver 200 ′.

At this time, the first line is a predetermined distance from the base portion 241 of the second yoke 240 located on the lower side of the magnetic body disposed on one side of the voice coil plate 500 as the center, that is, on the lower side of the magnet 220 . It is a plane spaced downward, and the second line is the upper side of the magnetic body disposed on the other side with the voice coil plate 500 as the center, that is, the base part 241 of the second yoke 240 located on the upper side of the magnet 220 . ) may be a plane spaced upward a predetermined distance from.

The first suspension line L1 may be spaced apart from a side surface of the body by a predetermined distance and may be horizontally disposed.

The second suspension line L2 may be spaced apart from one surface of the magnetic guide 230 ′ by a predetermined distance and may be horizontally disposed.

The first suspension line L1 and the second suspension line L2 may be disposed orthogonally.

The separation distance between the first suspension line (L1) and the vibration driver 200' and the separation distance between the second suspension line (L2) and the vibration driver 200' are related to the torsion that occurs during vertical vibration of the vibration driver 200'. It may be a distance for avoiding collision between the vibration driver 200 ′ and the suspension 400 ′.

Unlike the suspension 400 according to the first embodiment that is fixed to the entire upper surface or lower surface of the magnetic guide 230 , the suspension 400 ′ according to the second embodiment has the upper surface or lower surface of the magnetic guide 230 ′. Since it is fixed by being biased to one side, greater torsion may occur during vertical vibration.

Accordingly, the separation distance between the first and second suspension lines L2 and the vibration driver 200 ′ according to the second embodiment is the first and second suspension lines L2 and the vibration driver 200 according to the first embodiment. It may be greater than the distance between them.

프레임(100')Frame (100')

9 is a perspective view of the main frame 110' according to the second embodiment of the present invention.

Referring to FIG. 9 , the main frame 110 is a first fixing unit 115 to which the signal providing unit 300 is fixed. It may include a second fixing part 119' and a third fixing part disposed on the left and right of the first fixing part 115 to which a pair of vibration drivers 200' are fixed, respectively.

The second fixing part 119 ′ and the third fixing part may be disposed to be spaced apart from each other by an equidistant centering on the first fixing part 115 .

7 to 9 , since the second fixing part 119 ′ and the third fixing part have the same shape having the same configuration, a description of the third fixing part will be omitted.

As in the first embodiment, when the upper suspension and the lower suspension are vertically symmetrical, the second fixing part 119 is a fastening post 116 equal to the fastening point between the upper or lower suspension and the second fixing part 119 . may include.

However, since the upper and lower suspensions according to the second embodiment are not vertically symmetrical, the second fixing part 119' is a fastening pole equal to the fastening point between the upper and lower suspensions and the second fixing part 119'. (116) may be included.

That is, the second fixing part 119 ′ of the main frame 110 ′ according to the second embodiment may include eight fastening pillars 116 .

Features, structures, effects, etc. described in the above embodiments are included in one embodiment of the present invention, and are not necessarily limited to one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by a person skilled in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiment has been described above, it is only an example and does not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are exemplified above in a range that does not depart from the essential characteristics of the present embodiment It can be seen that various modifications and applications that have not been made are possible.

For example, each component specifically shown in the embodiment can be implemented by modification. And differences related to such modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

[Explanation of code]

100, 100': frame

200, 200': Vibration Driver

300: signal providing unit

400, 400': suspension

500: voice coil plate

110, 110': main frame

120: upper frame

130: lower frame

210: first yoke

220: magnet

230, 230': magnetic guide

240: second yoke

310; rechargeable battery

320: Amplifier Board

410, 410': first suspension

420, 420': second suspension

430, 430': third suspension

440, 440': fourth suspension

111: parallel movement limiting part

112: Shanghai East Limited

112a, 112b: hanging posts

113: Board seating part

131: lower fixing part

211: magnet fixing part

231, 231': magnetic body fixing part

231a: second yoke fixing part

231b: first yoke fixing part

232, 232': Suspension fixture

233: jig guide unit

241: base part

242: bent part

L1: first suspension line

L2: 2nd suspension line

CF: central fixed part

115: first fixing part

116: fastening column

117: connecting bar

119, 119': second fixing part

121: upper fixing part

Claims

frame;

a pair of vibration drivers disposed symmetrically within the frame and oscillating up and down by a magnetic circuit;

a signal providing unit disposed between the pair of vibration drivers to provide an electrical signal to the pair of vibration drivers; and

a suspension that connects the frame and the vibration driver and transmits vertical vibrations of the vibration driver to the frame;

The suspension is

an upper suspension connecting an upper portion and a lower portion of the vibration driver to the frame, respectively; and a lower suspension; including, a dual vibration device.
The method of claim 1,

The upper suspension is

a first suspension connecting the front end and the rear end of the vibration driver to the frame, respectively; and a second suspension;

The lower suspension is

a third suspension connecting the front end and the rear end of the vibration driver to the frame, respectively; and a fourth suspension; including, a dual vibration device.
The method of claim 1,

The vibrating driver is

a pair of magnetic bodies; and

Magnetic guides connected to both ends of the pair of magnetic bodies and the suspension, respectively, to maintain a separation distance between the magnetic bodies, and to float the pair of magnetic bodies in the air at a predetermined position inside the frame; Dual vibrating device included.
4. The method of claim 3,

The frame is

a main frame to which the pair of vibration drivers and the signal providing unit are fixed;

an upper frame disposed above and below the main frame to seal the main frame; and a lower frame; including, a dual vibration device.
5. The method of claim 4,

The main frame is

a first fixing unit to which the signal providing unit is fixed;

a second fixing part disposed on the left and right sides of the first fixing part to which the pair of vibration drivers are respectively fixed; and a third fixing part;

The second and third fixing parts are arranged equidistantly spaced apart from the center of the first fixing part, a dual vibration device.
5. The method of claim 4,

the upper frame

fixing the upper part of the voice coil plate so that the voice coil plate is disposed in the center of the pair of magnetic bodies;

the lower frame

A dual vibration device for fixing a lower portion of the voice coil plate so that the voice coil plate is disposed in the center of the pair of magnetic bodies.
6. The method of claim 5,

The suspension is

It is formed in a “W” shape or a “C” shape,

A dual vibration device comprising a first suspension line, a center fixing part and a second suspension line.
8. The method of claim 7,

The front end of each of the first suspension line and the second suspension line is connected to the second fixing part and the third fixing part, respectively, and the center fixing part is connected to the magnetic guide.
The method of claim 1,

The signal providing unit,

rechargeable battery; and

and an amplifier board for receiving current from the rechargeable battery, controlling an electrical signal and providing the current to the pair of vibration drivers.
10. The method of claim 9,

The frame is

A dual vibration device comprising a; a state display unit for displaying the charging state of the rechargeable battery and the operation mode of the dual vibration device.
The method of claim 1,

The dual vibration device,

A vibration mode in which vibration is generated by providing vibration energy to a vibration target, a sound mode in which the vibration target is used as a diaphragm through the vibration energy provided to the vibration target to provide sound, a specific signal stored in the memory is amplified at a specific period A dual vibration device that provides any one of the vibration effect modes for delivering specific vibration energy to the vibration target.