WO2019117496A1

WO2019117496A1 - Portable acoustic device

Info

Publication number: WO2019117496A1
Application number: PCT/KR2018/014356
Authority: WO
Inventors: 박찬우; 김동순; 김민; 박순현
Original assignee: 엘지전자 주식회사
Priority date: 2017-12-12
Filing date: 2018-11-21
Publication date: 2019-06-20

Abstract

Provided is a mobile terminal comprising: a housing; a retractable module mounted inside the housing; an acoustic cable exposed to the outside by passing through the retractable module; and an earbud connected to an end portion of the acoustic cable, wherein the retractable module comprises: a module case; a fixing roller fixed to the module case; a moving bracket moving, in the module case, between a first point adjacent to the fixing roller and a second point spaced in a first direction; a moving roller fixed to the moving bracket; and an elastic unit, which provides elasticity for restoring elasticity in the second point when the moving bracket moves to the first point which is close to the fixing roller, wherein the acoustic cable is wound while reciprocating between the fixing roller and the moving roller.

Description

Portable audio equipment

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a portable acoustic apparatus for receiving a sound signal from a terminal via wireless communication with a terminal and transmitting a control signal for controlling the terminal.

The portable sound device refers to a sound device that receives a sound signal from a terminal and transmits the sound information collected through the microphone to the terminal. Conventionally, a wired method has been used in which a terminal is connected to an earphone jack of a terminal to receive an acoustic signal. However, in view of mobility and ease of use, the demand for a wireless communication type portable acoustic device is increasing.

The portable sound device includes an audio output unit and can perform music playback, telephone conversation, and the like. It is possible to make a telephone call by connecting to the base station itself or directly to an external server to obtain sound data and to perform the function through connection with another terminal.

Portable audio equipment having a design considering portability such as a headphone type in which a user puts his / her head into a band shape so as to be portable to the user's body, an ear-type type and an ear-type type are being developed.

The acoustic cable connecting between the earbud and the stationary body that inserts into the ear of the user and outputs sound is inconvenient because the string is tangled or tethered when the string is not used in the form of a long string, The storage module may be provided.

An object of the present invention is to provide a portable acoustical instrument having a storage module with a slim structure in a portable acoustical instrument for receiving a sound signal from a terminal via wireless communication with a terminal and transmitting a control signal for controlling the terminal.

housing; A retractable module mounted within the housing; A printed circuit board mounted within the housing; A battery mounted inside the housing; A cable hole located at one end of the housing; An acoustic cable connected at one end to the printed circuit board and exposed to the outside through the cable hole through the storage module; And an earbud connected to the acoustic cable end, wherein the receiving module comprises: a module case; A fixing roller that rotates about a first shaft fixed to the module case; A moving bracket for moving between a first point adjacent to the fixed roller in the module case and a second point spaced apart in the first direction; A moving roller that rotates about a second shaft fixed to the moving bracket; And an elastic portion for providing elasticity for restoring the movable bracket to the second point when the movable bracket moves to a first point near the fixed roller, wherein the acoustic cable is wound to reciprocate between the fixed roller and the moving roller, And a mobile terminal extending through the one end of the module case and extending outside the housing.

The fixing roller and the moving roller may include a bobbin having diameters of both ends in the axial direction larger than a diameter of the center.

The bobbin includes: a first bobbin and a second bobbin positioned side by side on the moving roller; And a third bobbin located on the fixing roller, the acoustic cable being fixed at one end and extending outwardly through the cable hole after being wound on the first bobbin, the third bobbin, and the second bobbin .

One end coupled to the moving bracket and extending through the module case, the other end coupled to the housing, the moving bracket being tensioned when positioned at the first point, and the moving bracket positioned at the second point It can be shrunk.

The width of the first point of the module case may be narrower than the width of the second point.

The moving bracket may further include a resilient stopper that is inserted or protruded, and the module case may further include a hook groove to which the stopper is coupled to the side wall of the first point.

And a storage button for separating the stopper coupled to the hook groove.

Wherein the elastic portion has one end coupled to one end of the module case and the other end coupled to the moving bracket and being retracted when the moving bracket is located at the first point, .

And a spring shaft housed in the module case and extending from one end to the other end, wherein the elastic portion can use a spring spring that surrounds the spring shaft.

The pair of elastic portions may be provided.

A hook projecting from the moving bracket toward one end of the module case; And a locking part which is located at one side of the module case and is engaged with the hook when the moving bracket is located at the first point.

Wherein the locking portion includes a first inclined surface contacting the hook when the movable bracket is located at the first point and the hook is drawn into the locking portion; A first stepped portion positioned at the first inclined surface end portion; A second inclined surface on which the hook contacts and moves when the acoustic cable is pulled when the movable bracket is located at the first point; And a second step portion that blocks the hook from moving to the first step portion at the end of the second inclined surface.

The housing may have a curved streamlined shape, and the printed circuit board may include a plurality of unit substrates and a flexible substrate connecting the unit substrates.

Effects of the portable acoustic apparatus according to the present invention will be described as follows.

The reliability of the storage module can be increased by using a storage module having a simple structure instead of the rotatable storage module used in the past, and the portable audio equipment having a slim structure can be realized by reducing the size.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

1 is a block diagram showing a configuration of a portable acoustic apparatus according to the present invention.

2 is a perspective view of a portable audio device according to an embodiment of the present invention, viewed from one direction.

3 is a view illustrating the inside of a housing of a portable acoustic apparatus according to an embodiment of the present invention.

4 is an exploded perspective view of a storage module of a portable acoustic apparatus according to an embodiment of the present invention.

5 and 6 are views showing the operation of the storage module of the portable acoustic apparatus according to the embodiment of the present invention.

7 is an enlarged view of a receiving module of a portable acoustic apparatus according to an embodiment of the present invention.

8 is an exploded perspective view of a receiving module of a portable acoustic apparatus according to another embodiment of the present invention.

9 is a view showing the state of the storage module when the audio cable of the portable audio equipment of the present invention is received.

10 is a view showing the state of the storage module when the audio cable of the portable audio equipment of the present invention is taken out.

11 is a detailed view for explaining a fastening manner of the hook and the lock portion of the portable acoustic apparatus of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , &Lt; / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

1 is a block diagram of a portable acoustic device 300 according to an embodiment of the present invention. 2 is a perspective view of the portable acoustic device 300 according to an embodiment of the present invention, viewed from one direction. Reference is now made to Fig. 2 for convenience of explanation of the arrangements of the portable acoustic apparatus 300 according to Fig.

The portable acoustic device 300 of the present invention includes a control unit 380, a wireless communication unit 385, an acoustic output unit 340, a sensing unit 375, a microphone 360, a user input unit 370, and a power supply unit 390, .

The sound output unit 340 is a device for outputting sound according to a sound signal. As a representative example, there is an ear bud 341 that transmits sound by being inserted into a user's ear.

The microphone 360 processes the external acoustic signal into electrical voice data. The processed voice data is transmitted to an external terminal or an external server through the wireless communication unit 385. The microphone 360 may be implemented with various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The sensing unit 375 recognizes the state of the portable acoustic device 300 itself and its surroundings. The sensing unit 375 senses the brightness of the surroundings, the touch sensor that senses the touch input, and the inclination and position of the portable acoustic device A gyro sensor for detecting an ear bud 341, an ear bud switch for detecting whether or not an ear bud 341 is positioned in the ear bud holder 325, and the like.

The user input unit 370 is an input unit for the user to control the portable acoustic device 300 and includes a call button 372, a button 373 for controlling the volume, a power button 371, and an acoustic cable 345, And a storage button 218 for storing the data in the storage unit 320, for example.

The number of the user input units 370 may include only a call button 372 and a pair of volume control buttons 373, and may further include a play / stop button and a music order change button. Since the size of the portable audio device 300 is limited and the user input unit 370 often inputs without looking directly at the user, if the number of buttons is large, it is difficult to distinguish the functions of the respective buttons. The number of times of pressing and the number of times the button is pressed, and a plurality of buttons.

Since the portable audio device 300 maintains the wear state of the user, the risk of loss of the portable audio device 300 is small. However, the normal user terminal may be lost, and the user input unit 370 may perform an alarm function. For example, when two user input units 370 are simultaneously pressed for a predetermined time, an alarm of a terminal connected through Bluetooth can be called to find a lost terminal.

In addition, the voice recording function of the external terminal connected via Bluetooth can be activated to store the voice collected through the microphone 360 of the portable acoustic device 300.

In the related art, only the functions related to the call or the functions related to the playback of the sound media can be controlled by the portable sound device. However, the portable sound device of the present invention has an expanded control range.

2 is a perspective view of the portable acoustic device 300 according to an embodiment of the present invention, viewed from one direction. The main body of the portable acoustic apparatus 300 of the present invention is composed of a band 310 and a housing 320 and forms a C-shaped curve as shown in FIG.

At both ends of the band 310 mounted behind the user's neck, a housing 320 forming an electric field part is provided. Since the band 310 and the housing 320 are separated from each other mainly by function, the band 310 and the housing 320 may be integrally formed without distinguishing between the band 310 and the housing 320, or may form an overlapping region.

The cross-sectional shape and length of the band 310 are determined so as to minimize the foreign body sensation when the user puts on the neck. For example, the band 310 may be provided in a curved cylindrical shape, or may be provided in a twisted tape shape having a thickness and a thickness. In the case of a twisted tape-shaped band 310, the inner side of the band 310 is on the back side of the neck and the outer side faces the back side.

The band 310 may have a three-dimensional curvature in the form of a wide face facing the user's neck and a wide face facing the top face of the housing 320.

The housing 320 is coupled to both ends of the band 310 and is positioned at both ends of the C-shaped curve of the portable acoustic device 300. Various components such as a main board 381, a wireless communication unit 385, and a battery 391 storage module 200 are inserted inside and outside.

2, the housing 320 of the portable acoustical instrument 300 of the present invention is formed to be thinner than the conventional housing so that the band 310 is thinner than the conventional housing, The thickness can be approximately the same as the thickness. The slim design is a preferred design and it is possible to solve the inconvenience that the housing 320 hits the collarbone when the portable acoustic device 300 is worn on the neck or the inconvenience caused by the weight of the housing 320.

The C-shaped portable acoustic apparatus 300 can be worn on the user's neck as shown in FIG. At this time, the sensing unit 375 provided in the portable acoustic device 300 can detect whether or not the user wears the apparatus. For example, the sensing unit 375 may be implemented in the form of a displacement sensor that is provided in the band 310 to sense a change in curvature of the band 310. The displacement sensor may sense that the user opens the housing 320 at both ends when the portable acoustic device 300 is worn. In this case, since the curvature of the band 310 changes gently, it is determined that the user intends to use the portable acoustic device 300, and the power of the portable acoustic device 300 is turned on or can be synchronized with the external terminal.

In addition to the displacement sensor, a sensor such as a temperature sensor, a light sensor, or a heart sensor is provided on a wear surface of the wearer when the wearer worn the wearer's body, so that the temperature is in a person's body temperature range or brightness is darkened. The power of the portable audio-visual device 300 may be turned on, or the wireless communication unit 385 may be activated to synchronize with the external terminal.

Or a switch that is pressed in a physical manner so that the protruding switch is pressed to generate an ON signal when the user wears the switch. When the switch ON state is maintained for a predetermined time or more, the portable sound device 300 is powered on or synchronized with the external terminal .

The sensing unit 375 and the plurality of switches may be provided to accurately determine whether the sensing unit 375 is worn by combining a plurality of values.

The housing 320 may have an earbud holder 325 for receiving the earbud 341. The earbud holder 325 may be a groove corresponding to the shape of the earbud 341 and may have a magnet or hook structure for engaging the earbud 341. The earbud holder 325 may be located at the end of the housing 320 and the earbud holder 325 may be positioned in the housing 320 so that the earbud 341 is not visible when the earbud 341 is engaged with the earbud holder 325. [ (The direction in which the user contacts the user's body when worn), and the front surface is covered with the housing 320a.

The earbud 341 is connected to the printed

circuit boards

381a and 381b located in the housing 320 through the acoustic cable 345 and the printed

circuit boards

381a and 381b are connected to the earphone 341 through the acoustic cable 345 And controls the sound output from the earbud 341.

One end of the acoustic cable 345 is connected to the printed circuit board and the other end of the acoustic cable 345 is exposed to the outside of the housing 320 so that a cable hole through which the acoustic cable 345 passes is formed in the housing 320, The earbud holder 325 may be coupled to the earbud holder 325. When a cable hole is formed in the earbud holder 325, the acoustic cable 345 must be housed inside the housing so that the ear 341 can be coupled to the earbud holder 325, And a storage module 210 for storing the storage module 210. [

FIG. 3 is a view showing the inside of the housing of the portable acoustic device 300 according to an embodiment of the present invention. The conventional storage module uses a structure in which the acoustic cable 345 is wound around a circular wheel. However, since the conventional module using the wheel 210 requires the acoustic cable 345 to be wound around the wheel, the thickness of the cable must be thin, so that the acoustic cable 345 may be deteriorated and the acoustic cable 345 and the main board rotate together with the rotation module, there is a problem that the reliability of connection is low. In addition, there is a limit in reducing the size of the housing 320 due to the size of the wheel, and there is a problem in that it is impossible to mount the housing 320 on the slim housing 320 as shown in FIG.

Therefore, the portable acoustic device 300 of the present invention uses a storage module 210 having a thin thickness instead of a shape in which the acoustic cable 345 is wound on the wheel. 4 is an exploded perspective view of the storage module 210 of the portable acoustic device 300 according to an embodiment of the present invention.

The storage module 210 of the present invention can use a mobile terminal having a simple structure such as a module case 211, a fixing roller 216, a moving bracket 215, and a moving roller 214. The module case 211 is fixed to the housing 320 and the fixing roller 216 is fixed to one side of the module case 211. The moving bracket 215 moves the storage module 210 in the longitudinal direction (first direction). The moving bracket 215 is fixed to the fixing roller 216 by a moving roller 214 at one side and an elastic portion 217 at the other side to separate a distance between the moving bracket 215 and the fixing roller 216 Apply force in direction

The fixing roller 216 rotates about the first shaft 212a extending in the second direction (the width direction of the storage module 210), and the first shaft 212a is fixed to the storage module 210. [ The moving roller 214 rotates about the second shaft 212b extending in the second direction and the second shaft 212b is coupled to the moving bracket 215. [ The movable bracket 215 moves between a first point adjacent to the fixed roller 216 and a second point spaced in the first direction and the distance between the fixed roller 216 and the movable roller 214 may vary.

When the user pulls the acoustic cable 345, the moving roller 214 and the fixing roller 216 rotate and the moving bracket 215 moves in the first direction as much as the acoustic cable 345 is drawn out, The distance between the moving rollers 214 can be reduced.

The acoustic cable 345 reciprocates between the fixed roller 216 and the movable roller 214 and is wound around the fixed roller 216 and the movable roller 214 so that the acoustic cable 345 does not move in the shaft direction, And a bobbin having a small diameter at the center and a large diameter at both ends.

The acoustic cable 345 can be wound around the fixing roller 216 and the moving roller 214 a plurality of times to secure a sufficient length to allow the user to turn the head when the earbud 341 is worn. At this time, the number of bobbins corresponding to the number of times the acoustic cable 345 is wound can be provided to prevent the acoustic cables 345 from being twisted with each other.

For example, when the acoustic cable 345 is wound twice round trip, the moving roller 214 includes two

bobbins

214a and 214b, and the acoustic cable 345 is wound twice. The fixing roller 216 includes one bobbin and is wound once, and both ends of the acoustic cable 345 are disposed in the first point direction. One end of the acoustic cable 345 extends toward the printed circuit board through the opening 2113 formed in the module case 211 to be connected to the printed circuit board housed in the housing 320. The portion of the acoustic cable 345 that exits the opening 2113 does not move and can be arranged to escape to the outside of the storage module 210 without needing to wind it with the roller.

The other end of the acoustic cable 345 extends outside the housing 320 through the cable hole to be connected to the ear bud 341. The number of times the acoustic cable 345 reciprocates between the storage modules 210 is increased so that the length of the acoustic cable 345 can be made longer or the length of the storage module 210 can be shortened.

5 and 6 are views showing the operation of the storage module 210 of the present invention. 5 shows a state in which the ear bud 341 is housed in the ear bud holder 325 so that the moving bracket 215 is in the second position and Figure 6 shows a state in which the user removes the sound cable 345 from the receiving module 210 So that the movable bracket 215 is fixed at the first point.

5, the fixing roller 216 located at one side of the storage module 210 rotates about the first shaft 212a fixed to one side of the storage module 210. [ The movable bracket 215 is movable in the first direction of the storage module 210 and the elastic part 217 coupled to the movable bracket 215 moves the movable bracket 215 to the first point of the storage module 210 In this case, a pulling force is applied so as to return to the second point direction. 5, the moving bracket 215 is located at the second point and the acoustic cable 345 is positioned at the second position by the elasticity of the elastic portion 217 when the ear bud 341 is located in the ear bud holder 325. [ .

When the user pulls the earbud 341, the acoustic cable 345 is pulled and the moving bracket 215 is moved to the first point. The distance between the moving roller 214 and the fixing roller 216 is shortened as the acoustic cable 345 is drawn out of the housing 320 and the moving bracket 215 moves to the first The sound cable 345 is drawn out to the maximum.

A stopper 213 is required to resist the elasticity of the elastic portion 217 which pulls the movable bracket 215 in the other direction in order to maintain the state in which the acoustic cable 345 is drawn out. The stopper 213 protrudes from the moving bracket 215 and can be fixed to the moving bracket 215 by being caught by the hook groove 2111 formed in the receiving module 210 when the moving bracket 215 reaches the first point .

When the user desires to store the audio cable 345 again, the user can press the storage button 218 to release the stopper 213 from the hook groove 2111. [ The stopper 213 may have a deformed portion 2132 to be separated from the hook groove 2111 when a force is applied by pressing the storage button 218. [ When the stopper 213 is detached from the hook groove 2111, the movable bracket 215 moves to the second point again by the elasticity of the elastic portion 217. [

The hole 2131 of the stopper 213 may be inserted into the protrusion 2152 of the movable bracket 215 as shown in FIG. 4 in order to fix the stopper 213 to the movable bracket 215. The hole 2131 of the stopper 213 is larger than the projection 2152 so that the projection 2152 does not restrict deformation of the deformation portion 2132. [

Referring to FIG. 4, the stopper 213 may be a separate member, but the second shaft 212b coupled to the moving bracket 215 may be used as a stopper. That is, the second shaft 212b may include a deformable portion so as to vary in length in the longitudinal direction, but may be coupled to the moving bracket 215 so as not to rotate together with the moving roller 214. [

When the movable bracket 215 moves within the module case 211, when the stopper 213 moves in contact with the inner side wall of the module case 211, the end of the stopper 213 is worn and the acoustic cable 345 The inner width a of the module case 211 may be set so as not to touch the side wall of the module case 211 when the stopper 213 protrudes from the moving bracket 215, And the width of the protruded stopper 213 can be made wider than the width of the protruded stopper 213.

In order for the stopper 213 to be engaged with the hook groove 2111, the inner wall of the module case 211 must be pressed against the stopper 213. As shown in FIG. 7, The width b in the vicinity can be made smaller (b < a). That is, the inner width of the module case 211 is narrower at the first point where the hook grooves 2111 are formed and wider at the second point. In order to compensate for the width difference, the inner side wall of the module case 211 has an inclined surface 2115 .

The portable acoustic device 300 of the present invention includes a three-dimensional curved surface as shown in Fig. Compared with the conventional housing 320, the housing 320 of the present invention is small and a space for mounting a single plate-shaped printed circuit board is insufficient. In this case, the printed circuit board can be divided into a plurality of

unit substrates

381a and 381b, and the printed circuit board can be arranged in the bent space by connecting the

unit substrates

381a and 381b through the flexible substrate 383.

8 is an exploded perspective view of the storage module 230 of the portable acoustic device 300 according to another embodiment of the present invention. FIG. 9 is a view showing the state of the storage module 230 when the audio cable of the portable audio equipment 300 of the present invention is received. FIG. 10 is a view showing a state in which the audio cable of the portable audio device 300 of the present invention The state of the storage module 230 is shown.

4 is difficult to assemble in the housing 320 because the resilient portion 237 is located on the outer side of the module case 231. The resilient portion 237 is mounted on the module case 231, The assemblability can be improved. When the elastic part 237 is mounted inside the housing 320, a tension spring may be used as in the above-described embodiment, but a compression spring may be used as shown in FIG.

The elastic part 237 of this embodiment has one end coupled to one end of the module case 231 and the other end coupled to the moving bracket 235 to be coupled to the moving bracket 235, The elastic portion 237 may have a maximum tensile length when it is located at the other side of the case 231, i.e., at the second point. 10, when the user pulls the earbud to pull out the acoustic cable, the movable bracket 235 moves to the second point, and the length of the elastic portion 237 is shortened. The elastic portion 237 shown in FIGS. 8 to 10 is a compression spring. Therefore, when the force is applied in the compressing direction, the elastic portion 237 is reduced and returns to the original length.

The compression spring of the present embodiment can use a spring spring having a length longer than the width, and the shaft can be shaken during compression due to its length in the longitudinal direction. In order to prevent this, a spring shaft penetrating the compression spring may be further included. It is fixed by the spring shaft so that it can not move except the axial direction, and the length can be changed only in the axial direction.

A pair of resilient portions 237 may be provided as shown in FIG. 8 so that the movable bracket 235 smoothly moves while the force is not deviated to one side and the force is stably dispersed.

9, when the acoustic cable of the portable acoustic device 300 is housed, the elastic portion 237 is extended to the maximum length, and the movable bracket 235 is located at the second point. As shown in FIG. 10, when the acoustic cable of the portable audio equipment 300 is pulled out, the acoustic cable is drawn out, and the moving roller 234 and the fixing roller 236 of the moving bracket 235 rotate to narrow the distance between them. The elastic portion 237 is compressed in accordance with the movement of the moving bracket 235, and when the moving bracket 235 reaches the first position, the acoustic cable is no longer drawn out. In order to fix the acoustic cable in a drawn state, a fixing portion capable of responding to the tensile force of the elastic portion 237 is required.

Although the above embodiment has a structure for fastening the hook 233 using the hook 233 and releasing the hook 233 fastened by using the storage button, It can be fixed in the drawn state or can be stored again.

8, the portable acoustical instrument 300 of the present embodiment is configured such that when the hook 233 coupled to the moving bracket 235 and the moving bracket 235 reach the first point, the hook 233 is inserted And may include a locking portion 232. The hook 233 and the locking part 232 are located between the moving bracket and the fixing roller 236 in Figs. 9 and 10 and are not seen from the outside while being surrounded by the acoustic cable.

11 is a detailed view for explaining a hooking manner of the hook 233 and the locking part 232 of the portable audio device 300 according to the present invention. The locking part 232 includes a first inclined surface 2321, The hook 233 includes a hook 233 which extends along the first inclined surface 2321 when the movable bracket 235 reaches the first point, 232 and interrupted by the first stepped portion 2322 as shown in FIG. 11 (b). Corresponds to the engagement state of the lock portion 232 and the hook 233 in Fig.

The hook 233 moves along the second inclined surface 2323 and removes the force again when the user pulls the audio cable with greater force so that the hook 233 is moved to the second stepped portion 233 as shown in Figure 11 (c) The movement in the direction of the first stepped portion 2322 is restricted by the second stepped portion 2324 so that the lock portion 232 is released without being caught by the first stepped portion 2322. The first stepped portion 2322 is formed with a step in the y-axis direction in order to block the movement of the hook 233 in the x-axis direction in the drawing, and the second stepped portion 2324 is formed with a stepped portion in the z- A step may be formed in the y-axis direction to block motion.

The inclined directions of the first inclined surface 2321 and the second inclined surface 2323 are not parallel to each other so that the first stepped portion 2322 and the second stepped portion 2324 do not overlap each other, And the second inclined surface 2323 can be inclined in the z-axis direction.

The hook 233 of this embodiment may have the form of a U-shaped bent pin 2331. The end portion connected to the moving bracket 235 is fixed while the other end is free to move and moves along the first inclined surface 2321 and the second inclined surface 2323 to move the first step 2322 and the second step 2324 ). The first inclined surface 2321 and the second inclined surface 2323 may be inclined differently so that the other end of the hook 233 can move along the two inclined surfaces. The portable acoustical instrument 300 of the present invention can improve the reliability of the

storage modules

210 and 230 by using the

storage modules

210 and 230 having a simple structure instead of the rotatable storage modules used conventionally, It is possible to implement the portable acoustic apparatus 300 of one structure.

The foregoing detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

Claims

housing;

A retractable module mounted within the housing;

A printed circuit board mounted within the housing;

A battery mounted inside the housing;

A cable hole located at one end of the housing;

An acoustic cable connected at one end to the printed circuit board and exposed to the outside through the cable hole through the storage module; And

And an earbud connected to the acoustic cable end,

The storage module

Module case;

A fixing roller that rotates about a first shaft fixed to the module case;

A moving bracket for moving between a first point adjacent to the fixed roller in the module case and a second point spaced apart in the first direction;

A moving roller that rotates about a second shaft fixed to the moving bracket; And

And an elastic portion for providing elasticity for restoring the movable bracket to the second point when the movable bracket moves to a first point close to the fixed roller,

Wherein the acoustic cable is wound around the fixing roller and the moving roller while being reciprocated.
The method according to claim 1,

Wherein the fixing roller and the moving roller include bobbins whose diameters at both ends in the axial direction are larger than the center diameter.
3. The method of claim 2,

The bobbin

A first bobbin and a second bobbin disposed side by side on the moving roller; And

And a third bobbin located in the fixing roller,

The acoustic cable

Wherein the first bobbin is fixed at one end and extends outwardly through the cable hole after being wound on the first bobbin, the third bobbin, and the second bobbin.
The method of claim 1, wherein

The elastic portion

One end coupled to the moving bracket and extending through the module case and the other end coupled to the housing,

Wherein the first bracket is retracted when the moving bracket is positioned at the first point and contracts when the moving bracket is positioned at the second point.
The method of claim 1, wherein

Wherein the width of the first point of the module case is narrower than the width of the second point.
6. The method of claim 5,

The moving bracket further includes a resilient stopper that is retracted or protruded,

Wherein the module case further comprises a hook groove to which the stopper is coupled to the side wall of the first point.
The method according to claim 6,

And a storage button for separating the stopper coupled to the hook groove.
The method according to claim 1,

Wherein the elastic portion has one end coupled to one end of the module case and the other end coupled to the moving bracket and being retracted when the moving bracket is located at the first point, Wherein the portable audio device is a portable audio device.
9. The method of claim 8,

Further comprising a spring shaft housed in the module case and extending from one end to the other end,

Wherein the elastic portion is a spring spring that surrounds the spring shaft.
9. The method of claim 8,

And the elastic portions are provided in a pair.
The method according to claim 1,

A hook projecting from the moving bracket toward one end of the module case; And

Further comprising: a lock portion which is located at one side of the module case and is engaged with the hook when the movable bracket is located at the first point.
12. The method of claim 11,

The locking portion

A first inclined surface contacting the hook when the movable bracket is positioned at a first point and a hook is drawn into the locking portion;

A first stepped portion positioned at the first inclined surface end portion;

A second inclined surface on which the hook contacts and moves when the acoustic cable is pulled when the movable bracket is located at the first point;

And a second stepped portion for blocking the hook from moving to the first stepped portion at the end of the second inclined surface.
The method according to claim 1,

The housing has a curved streamlined shape,

The printed circuit board

A plurality of unit substrates and a flexible substrate for connecting the unit substrates.