KR20190014980A - Portable sound equipment - Google Patents

Abstract

The present invention relates to a portable sound device capable of controlling a terminal by receiving a sound signal from the terminal. The portable sound device includes: a body including an ear bud holder; an ear bud detachably attached to the ear bud holder for outputting a sound; an acoustic cable extending from the body and connected to the ear bud; a main board positioned inside the body; and a rotation module including a fixed part fixed to the body and a rotation part rotating and unwinding or releasing the acoustic cable. The fixing part of the rotation module includes: a shaft; and a pair of connection electrodes formed on the shaft and electrically connected to the main board. The rotation part of the rotation module includes: a bobbin including a concave part that rotates about the shaft and into which the acoustic cable is wound; a spiral spring disposed at a lower portion of the concave part and having an inner end connected to the shaft and an outer end connected to the bobbin to provide rotational force to the bobbin; and a pair of connection terminals connected to the acoustic cable, projecting inward of the bobbin, and contacting the pair of connection electrodes, respectively, The pair of connection terminals are in contact with the pair of connection electrodes in different directions.

Description

[0001] PORTABLE SOUND EQUIPMENT [0002]

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.

A 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.

Particularly, in the case of a portable acoustic apparatus of the type that is carried (or stowed) in the body of a user, it is desirable to minimize the number of components and reduce the weight.

In addition, considering the design factors, the components of the portable audio equipment need to be made as compact as possible.

The present invention relates to a portable acoustical instrument for receiving a sound signal from a terminal via a wireless communication with a terminal and transmitting a control signal for controlling the terminal, wherein the electrical connection between the components can be well maintained And to provide a portable sound device.

It is another object of the present invention to provide a portable acoustic apparatus which can minimize the number of components provided in a rotary module.

It is another object of the present invention to provide a portable acoustic apparatus capable of compactly manufacturing a rotary module, which is one of major components, and reducing the manufacturing cost.

A body including an ear bud holder; An ear bud detachably attached to the ear bud holder and outputting sound; An acoustic cable extending from the body and connected to the earbud; A main board positioned inside the main body; And a rotation module including a fixing part fixed to the main body and a rotation part rotating and winding or loosening the sound cable, wherein the fixing part of the rotation module comprises: a shaft; And a pair of connection electrodes formed on the shaft and electrically connected to the main board, wherein the rotary part of the rotation module includes: a bobbin including a concave part that rotates about the shaft and into which the acoustic cable is wound; A spring disposed at a lower portion of the recess and having an inner end connected to the shaft and an outer end connected to the bobbin to provide rotational force to the bobbin; And a pair of connection terminals connected to the acoustic cable and protruding inwardly of the bobbin and contacting the pair of connection electrodes, respectively, wherein the pair of connection terminals are connected to the pair of connection terminals Thereby providing a portable acoustic apparatus in contact with the connection electrode.

Wherein the connection electrode includes a first connection electrode and a second connection electrode spaced apart from each other in a longitudinal direction of the shaft, the connection terminal includes a first connection terminal contacting the first connection electrode, And a second connection terminal to which the second connection terminal is connected.

The rotation module may further include an insulation ring fastened to the shaft between the first connection electrode and the second connection electrode.

The shaft includes a first non-metallic portion, a first connecting electrode including a metal material, a second non-metallic portion, the second connecting electrode including a metal material, And a third nonmetal portion may be stacked in this order.

The first non-metal portion may include a solid portion filled with an inner portion, and the third non-metal portion may include a hollow portion having an inner hollow portion and a connection cable connecting the connection electrode and the main board through the hollow portion.

The solid portion is located below the hollow portion, and the connection cable may extend from an upper portion of the rotation module and be connected to the main board.

The shaft may include a non-metallic material, and the connection electrode may include a connection cable formed by coating a conductive material around the shaft of the non-metallic material, and connecting the shaft to the main board through the shaft.

The connecting electrode may include a groove recessed from the outer circumferential surface of the shaft.

The connection terminal may include an elastic brush made of a metal having elasticity.

The elastic brush may include at least one bent portion, and the bent portion may contact the connection electrode.

The bending portion may include a first bending portion for allowing the free end of the elastic brush to face the connection electrode, and a second bending portion contacting the connection electrode.

The connection terminal may include a pogo pin having an elastic portion protruding from the inside of the bobbin and applying a force to the connection electrode to maintain a connected state with the connection electrode.

One end of the connection terminal, which is connected to the acoustic cable, may be fixed to the bobbin through a side surface of the bobbin.

When the user pulls the acoustic cable, the rotary unit rotates in the first direction, and when the acoustic cable is laid, the rotation of the rotary unit is fixed. When the user pulls the acoustic cable briefly and releases the rotary unit, And a rotation guide unit for controlling rotation of the rotation unit to wind the acoustic cable to the bobbin.

The rotation guide portion includes a ball track located on an upper portion of the bobbin or a lower portion of the bobbin and including a continuous groove; A ball slot formed to face the ball track and extending in the radial direction of the rotation module; And a ball interposed between the ball track and the ball slot and moving along the ball track and the ball slot, wherein one of the ball track or the ball slot is fixed and the other is rotatable.

 The fixing portion may include a bracket covering at least one of an upper surface and a lower surface of the rotary portion, the shaft may be coupled to the bracket, and the bracket may be fixed to the body.

The main body includes a C-shaped elastic band to be worn on the neck of the user, and the rotation module may be provided at both ends of the main body.

According to the present invention, it is possible to provide a portable acoustic apparatus in which the electrical connection between the structures can be well maintained even if the rotating portion rotates in the rotating module.

Further, according to the present invention, it is possible to provide a portable acoustic apparatus that can minimize the number of parts provided in the rotary module.

In addition, according to the present invention, it is possible to provide a portable acoustic apparatus which can compactly manufacture a rotary module, which is one of the main components, and can reduce manufacturing costs.

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 an exploded perspective view of a portable acoustic apparatus according to an embodiment of the present invention.
4 is an exploded perspective view of an elastic band of a portable acoustic apparatus according to an embodiment of the present invention.
5 is a view showing a coupling method of the elastic band and the housing of the portable acoustic apparatus according to an embodiment of the present invention.
6 is an exploded perspective view illustrating a rotation module of a portable acoustic apparatus according to an embodiment of the present invention.
Figures 7 and 8 are sectional views of the rotary module.
9 is a view showing a ball track of the portable acoustic apparatus of the present invention.
10 and 11 are views for explaining an aspect in which the ball of the portable acoustic apparatus of the present invention moves along the ball track.

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. , ≪ / 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 in accordance with a sound signal. As a representative example, there is an ear bud 340 that transmits sound by being inserted into a user's ear. The ear bud 340 may include an unshown sound output module.

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 includes an illuminance sensor for sensing the brightness of the surroundings, a touch sensor for sensing the touch input, A gyro sensor for detecting an ear bud 340, an ear bud switch for detecting whether or not an ear bud 340 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 340, And a storage button 375 for storing the data in the storage unit 320.

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. And a control command that can be input by combining 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 device 300 of the present invention is composed of the elastic band 310 and the housing 320 and forms a C-shaped curve as shown in FIG.

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

The elastic band 310 is elastic and deformed within a predetermined range when a force is applied, and is returned to its original shape when the force is removed. When the distance between the housings 320 at both ends is not sufficient to pass through the neck, the elasticity of the elastic band 310 can be used to open each housing 320 to mount or unmount the neck 320.

The shape and length of the elastic band 310 are determined so as to minimize a foreign body feeling when the elastic band 310 is placed on the user's neck. For example, the elastic band 310 may be formed in a curved cylindrical shape, or may be provided in a twisted tape shape having a thickness and a thickness. In the case of the elastic band 310 in the form of a twisted tape, the inner side of the elastic band 310 is on the back side of the neck and the outer side faces the back side. A portion of the elastic band 310 and the connection of the housing 320 may be twisted so that the outer surface of each housing 320 faces the front or top surface of the user and the inner surface of the housing 320 faces the back or collarbone portion of the user.

The housing 320 is coupled to both ends of the elastic band 310 and is located 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 rotation module 350 are inserted into the inside and the outside.

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 provided in the elastic band 310 and may be implemented in the form of a displacement sensor that detects a change in curvature of the elastic 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 elastic 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 synchronized with the external terminal.

The curvature after the change of the curvature of the elastic band 310 in the displacement sensor can be considered in order to more accurately determine whether the user wears it or whether it is worn on the mobile phone. When the curvature of the elastic band 310 is largely changed to the first size and then the curvature is fixed to a curvature of a second size that is gentler than that of the portable acoustic device 300, It is possible to judge that it is worn on.

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.

3 is an exploded perspective view of a portable acoustic device 300 according to an embodiment of the present invention.

The housing 320 coupled to both ends of the elastic band 310 includes an upper case 321 and a lower case 324 and a main board 381 is interposed between the upper case 321 and the lower case 324, A wireless communication unit 385, a battery 391, a microphone 360, and a rotation module 350 are mounted.

The housing 320 is manufactured by injection molding a polymer material, and for example, a plastic product having strength such as polystyrene can be used. It may partially include a release material such as metal, glass, or leather.

The housing 320 may be formed of a rigid polystyrene (PS) material to protect the internal components and simultaneously coat the surface of the housing 320 with polyurethane so as to be in close contact with the user's body. When the polyurethane coating is applied to the surface of the housing 320, the integrated appearance of the portable acoustic device 300 can be formed, and both the elastic band 310 and the housing 320 are brought into close contact with the skin of the user, There is an advantage that it does not shake and it is comfortable.

Since the portable audio device 300 worn on the body is easily exposed to moisture such as sweat, the durability can be increased by adding a waterproof function. It is possible to form a rib that covers a gap between the upper case 321 and the lower case 324 or to prevent water from penetrating through the waterproof member. The upper case 321 and the lower case 324 can be brought into close contact with each other even if a separate waterproof member is not provided.

The main board 381 mounted in the housing 320 of the present invention includes a battery 391, a user input unit 370, an audio output unit 340, a wireless communication unit 385, a microphone 360, And the like. The components mounted on the housing 320 may be provided symmetrically with respect to the housing 320 on both sides or asymmetrically. A component provided only at one side of the housing 320 can be used through a signal line mounted on the elastic band 310. For example, when the wireless communication unit 385 is provided in the housing 320 of one side, the wireless communication unit 385 can transmit the acoustic signal received by the earbud 340 to the earbuds 340 on both sides using the signal line.

The wireless communication unit 385 may include an antenna pattern 386 mounted on the main substrate 381 or formed on the surface of the housing 320 to transmit and receive signals to / from an external terminal. A control signal and an acoustic signal are received from an external terminal by synchronizing with an external terminal using a local wireless communication method such as an external terminal and Bluetooth or input through a user input unit 370 or a microphone 360 of the portable acoustic apparatus 300 And transmits the received control command and sound signal to the external terminal.

The housing 320 may include a power button 371 for turning the power on / off, a button 372 for playing or talking, a direction key 373 for adjusting the sound, etc. Or may be used for the purpose of controlling to reproduce the music thereafter). The button may be a dome key that is physically pressed, or may be a touch key that senses a change in capacitance.

The position of the touch key is not limited, and the surface of the housing 320 can be variously used. When the touch key is implemented on the surface of the housing 320, the position of the touch key on the surface of the housing 320 and the function of the touch key can be displayed using the LED.

The earbud 340 is inserted into a user's ear to transmit sound, and the earbud 340 is connected to the main board 381 through an audio cable. The sound output module (not shown) can perform a function of directly generating sound at the ear bud 340. The sound output module refers to a configuration including a diaphragm and the like.

The main board 381 controls the ear bud 340 to control the sound output according to the acoustic signal.

4 is an exploded perspective view of the elastic band 310 of the portable acoustic device 300 according to another embodiment of the present invention. The elastic band 310 includes a shape memory alloy 311, covering portions 312 and 313, (315).

The shape memory alloy 311 has a property of restoring to a specific shape even if it is deformed. When the user applies a force to spread the body, the shape memory alloy 311 returns to the original shape even if the elastic band 310 is deformed. Thereby preventing deformation or damage of the shape of the portable acoustic device 300.

The elastic band 310 further includes covering portions 312 and 313 surrounding the shape memory alloy 311 and the covering portions 312 and 313 may be formed of thermoplastic polyurethane which is variable in shape . The thermoplastic polyurethane can be produced by dissolving in heat, and when hardened, has oil resistance, abrasion resistance, and elasticity like rubber.

And a connection part 315 having a fastening structure for coupling with the housing 320 located at both ends of the elastic band 310. [ The connecting portion 315 of the present invention extends in the left and right direction in the covering portions 312 and 313 so as to overlap with the housing 320 and partially covers the covering portions 312 and 313. That is, the cover portion is formed in the shape memory alloy 311 and the connecting portion 315 by a double injection method.

The shape memory alloy 311 and the second covering portion 312 covering the signal line are provided for accurately positioning the position of the shape memory alloy 311 on the connecting portion 315 and for fixing the signal line for transmitting and receiving signals on both sides of the housing 320 ). And both ends of the second covering portion 312 are joined to the pair of connection portions 315. A first covering portion 313 covering the connection portion 315, the second covering portion 312 and the shape memory alloy 311 is formed by a double injection molding method so that an elastic band Lt; RTI ID = 0.0 > 310 < / RTI >

5 is a view illustrating a coupling method of the elastic band 310 and the housing 320 of the portable acoustic device 300 according to another embodiment of the present invention. The shape memory alloy 311 (see FIG. 4) is exposed at both ends of the second covering portion 312 and both end portions of the shape memory alloy 311 (see FIG. 4) are bent into a hook shape to increase the fixing force, Can be combined. The connection portion 315 has a plurality of holes, and is fastened to the housing 320.

At least one area of the connection part 315 may be enclosed by the housing 320. The upper case 321 and the lower cases 322 and 324 may cover one side and the other side of at least one region of the connecting portion 315, respectively. Since the upper case 321 is exposed to the outside, one member extending from the portion of the elastic band 310 that engages with the connecting portion 315 to both ends of the body is used, and the lower case 322, A first lower case 322 surrounding the connection part 315 and a second lower case 324 on which the components are mounted.

One of the upper case 321 or the lower cases 322 and 324 and the connecting portion 315 penetrate through the fastening holes formed in the connecting portion 315 and are screwed into the upper case 321 or the lower cases 322 and 324, And the exposed portion of the head portion of the screw 316 can be fixed in such a manner that the opposite case covers and covers.

The length of the connecting portion 315 can be determined as necessary. In order to secure space and reduce weight, a minimum number of screws 316 can be applied. However, in this case, if the fastening force between the elastic band 310 and the housing 320 is weak and the elastic band 310 is repeatedly applied with a force, it may be damaged. Therefore, 316 can be used to increase the fastening force.

FIG. 6 is an exploded perspective view illustrating a rotation module 350 of a portable acoustic device according to an embodiment of the present invention, and FIGS. 7 and 8 are sectional views of a rotation module 350.

The rotary module 350 is rotatably mounted inside the housing 320 and surrounds the acoustic cable while rotating to house the acoustic cable into the housing 320 (see FIG. 3), and the earbud 340 ) Is fastened to the ear bud holder (see Fig. 2). The rotation module 350 includes a fixing portion 350a fixed to the housing 320 and a rotation portion 350b rotating relative to the fixing portion 350a. The fixing portion 350a may further include brackets 3501 and 3502 located on the outer surface of the rotation module 350. [

The fixing portion 350a includes a shaft 351 serving as a rotation center axis of the rotation module 350 and the rotation portion 350b includes a cylindrical bobbin 353 around which the acoustic cable is wound. The bobbin 353 may include a concave portion 3531 which is drawn in the center direction for a space in which the acoustic cable is wound.

A spring 355 is provided inside the bobbin 353 to provide a force for driving the rotation of the rotation module 350. The spring 350 is a type of spiral wound leaf spring whose center is the shaft 351, And the outer side is coupled to the rotating portion 350b. When the user pulls the acoustic cable, the bobbin 353 rotates in the first direction and the number of windings of the spring 355 is reduced to have a restoring force by elasticity. When the acoustic cable is released, the spring 355 is restored by the restoring force The bobbin 353 is rotated in the second direction opposite to the first direction and the acoustic cable is wound on the bobbin 353 and housed in the housing.

And a rotation guide 356 for controlling rotation of the rotation part 350b in the second direction by the elasticity of the spring 355. [ The rotation guide 356 does not prevent the rotation part 350b from rotating in the first direction due to the user pulling the acoustic cable 345. [ Thereafter, when the user releases the audio cable, the rotation guide 356 prevents the rotation of the rotation part 350b in the second direction so as not to be housed in the housing 320 in a state in which the sound cable 345 is drawn out, And when the audio cable 345 is pulled back and pulled, the fixing is released to rotate in the second direction by the elasticity of the spring-loaded spring 355, so that the audio cable 345 is received.

The bobbin 353 includes a space for accommodating the spiral spring 355 at an upper portion thereof and a recess 3531 through which the acoustic cable 345 is wound. If the concave portion is located above the spring-loaded spring, the member that provides the rotational force can be wound round the floor from the bottom, so that the problem that the sound cable 345 is wound around the bobbin can be solved.

Even if the rotation unit 350b rotates, the acoustic cable 345 should be maintained connected to the main board 381 mounted on the housing 320. To this end, the shaft 351 may be provided with connection terminals 3511 and 3512 for electrically connecting the acoustic cable 345 to the main board 381. For example, the connection terminals 3511 and 3512 may be disposed around a part of the shaft 351.

The shaft 351 includes a non-metallic material, and the connection electrodes 3511 and 3512 include a conductive material and the shaft 351 is made of a non-metallic material to prevent a short circuit between the pair of connection electrodes 3511 and 3512 . The shaft 351 may have a layered structure in the form of a first nonmetal portion, a first connecting electrode 3511, a second nonmetal portion, a second connecting electrode 3512, and a third nonmetal portion. The second nonmetal portion can prevent a short circuit of the connection electrodes 3511 and 3512.

Alternatively, the connection electrodes 3511 and 3512 may be formed by coating a metal material on the surface of the shaft 351 made of a non-metallic material.

Specifically, the rotation module 350 may further include connection terminals 3521 and 3522 for maintaining electrical connection between the connection terminals 3511 and 3512 and the acoustic cable 345. The connection terminals 3521 and 3522 may be formed of metal. One end of the connection terminals 3521 and 3522 may be connected to the acoustic cable 345 through soldering or the like and the other end may be in contact with the connection terminals 3511 and 3512. The electrical connection between the acoustic cable 345 and the connection terminals 3511 and 3512 can be maintained without a short circuit by the elastic brush 352 even if the bobbin 353 rotates.

The connection terminals 3521 and 3522 have elasticity in order to exert a force in a direction parallel to the bottom surface in the direction toward the shaft. The connection terminals 3521 and 3522 may be of a pogo pin type as shown in Fig. 7, or a clip type using a leaf spring as shown in Fig. 8 may be used.

The connection terminals 3521 and 3522 may include at least one bent portion 3521 ', 3521', 3522 ', and 3522'. The bent portions 3521 ', 3521 ", 3522', and 3522" may be in contact with the connection terminals 3511, 3512.

More specifically, the bent portions 3521 ', 3521 ", 3522', and 3522" are formed by a first bent portion (not shown) for orienting the free ends of the connection terminals 3521, 3522 toward the connection terminals 3511, 3512 3521 ', and 3522' that are in contact with the connection terminals 3511 and 3512 and the second bent portions 3521 'and 3522' that are in contact with the connection terminals 3511 and 3512.

As the second bent portions 3521 "and 3522" which are not the ends of the connection terminals 3521 and 3522 contact the connection terminals 3511 and 2512, the connection terminals 3521 and 3522 and the connection terminals 3511 and 3512 can be maintained in a good contact state.

As shown in FIG. 7, the connection terminals 3521 and 3522 may include an elastic brush including a conductive component and a soft material, and may include a conductive material having elasticity such as a pogo pin and a C clip, One of which can be used.

Hereinafter, for convenience of explanation, a description will be made with reference to a clip-type connecting terminal including a bent portion.

The connection terminals 3511 and 3512 may include a first connection terminal 3511 and a second connection terminal 3512 spaced from each other in the longitudinal direction of the shaft 351. The connection terminals 3521 and 3522 may include a first connection terminal 3521 connected to the first connection terminal 3511 and a second connection terminal 3522 connected to the second connection terminal 3512 have.

At this time, the first connection terminal 3511 may be disposed above the second connection terminal 3512. One end of the first connection terminal 3521 connected to the acoustic cable 345 may be fixed to the bobbin 353 through a side surface of the bobbin 353. One end of the second connection terminal 3522 connected to the acoustic cable 345 may be fixed to the bobbin 353 through a lower surface of the bobbin 353.

Therefore, interference between the first connection terminal 3521 and the second connection terminal 3522 can be prevented.

On the other hand, if the first connection terminal 3521 and the second connection terminal 3522 are connected to the same connection terminal or contact with each other, a short circuit may occur.

The rotation module 350 may further include an insulation ring 3515 fastened to the shaft 351 between the first connection terminal 3511 and the second connection terminal 3512. The insulating ring 3515 may be formed of rubber. The occurrence of interference and short-circuiting between the first connection terminal 3511 and the second connection terminal 3512 can be prevented by the insulating ring 3515.

The first connection terminal 3521 and the second connection terminal 3522 may be disposed to face each other with respect to the shaft as shown in FIG. The first connection terminal 3521 and the second connection terminal 3522 are spaced apart from each other within a limited space so as to avoid a problem of collision.

When the rotation module 350 is rotated, the first connection terminal 3521 and the second bent portions 3521 ", 3522 "of the second connection terminal 3522 are connected to the first connection terminal 3511 The first connection terminal 3511 and the second connection terminal 3512 may be recessed inwardly from the shaft so as not to depart from the second connection terminal 3512. [ The second bent portions 3521 "and 3522" are connected to the first connection terminal 3511 due to the step between the outer peripheral surface of the shaft 351 and the first connection terminal 3511 and the second connection terminal 3512, And the second connection terminal 3512 can be maintained in a connected state.

The main board 381 and the connection terminals 3511 and 3512 may be electrically connected through a connection cable 383. For example, one end of the connection cable 383 may be connected to the main board 381 by soldering, and the other end of the connection cable 383 may be connected to the connection terminals 3511 and 3512 by soldering. Therefore, the electrical connection between the acoustic cable 345 and the main board 381 can be maintained through the connection terminals 3511 and 3512 and the connection cable 383.

Meanwhile, when the bobbin 353 is rotated, if the connection cable 383 interferes with the bobbin 353, the connection between the connection cable 383 and the connection terminals 3511 and 3512 may be cut off .

In order to prevent this, the shaft 351 may be formed in the form of a hollow shaft having one end in the longitudinal direction thereof opened. One end of the connection cable 383 is connected to the connection 358 from the inside of the shaft 351 through the open end of the shaft 351 (for example, the upper end or the lower end with respect to the longitudinal direction of the shaft) Terminals 3511 and 3512, respectively. That is, one end of the connecting cable 383 is guided to the inside of the shaft 351 through one opened end of the shaft 351, and the inner circumferential surface of the shaft 351, And may be connected to the connection terminals 3511 and 3512 through soldering or the like.

However, the shaft 351 serves to support the rotational force of the rotation module 350 as an axis when the rotation module is rotated, and may include a material having rigidity. However, as shown in Fig. 7, only the portion (upper portion 351a in the drawing) necessary for connection of the connection terminals 3511 and 3512 is hollow and the remaining portion The portion (lower portion in the drawing) 351b may have a cylindrical shape filled with the inside. That is, the upper portion of the shaft 351 is composed of the hollow portion 351a and the lower portion thereof is the solid portion 351b.

Since the elastic brushes 3521 and 3522 of the present invention are located under the bobbin 353, the connection terminals 3511 and 3512 are also located at the lower portion. When the connection cable 383 and the connection terminals 3511 and 3512 are connected to each other through the lower portion of the shaft 351, the hollow space is enlarged in the shaft 351 and the rigidity of the shaft 351 is lowered. The connection cable 383 can be extended at the top of the rotation module 350 as shown.

The rotation guide 356 may be located on the upper side of the rotation module 350 as shown in FIG. 7, or may be located on the lower side of the rotation module 350 as shown in FIG.

The rotation guide 356 includes a ball slot 359 located on one side of the fixed portion 350a and the rotation portion 350b and on the other side of the ball track 357. The embodiment of Figure 7 includes a ball slot 359 8 shows a state in which the ball slot 359 is located at the fixed portion 350a and the ball track 357 is located at the fixed portion 350a. ). And a ball 358 disposed between the ball track 357 and the ball slot 359. The ball track 357 and the ball slot 359 include concave recesses corresponding to the shape of the ball 358 so that the ball 358 can move along the ball track 357 and the ball slot 359 do.

The ball slot 359 extends in the direction of the center of rotation to control the ball 358 to move only along the ball slot 359, and the ball track 357 includes a circular track. When the ball slot 359 rotates, the ball track 357 is fixed, the ball 358 rotates along the ball track 357, and the ball slot 359 is moved in accordance with the position on the ball track 357 of the ball 358. [ . The ball 358 moves relative to the component of the direction in which the ball slot 359 is formed, depending on the path of the fixed ball slot 359, with relative displacement along the locus of the rotating ball track 357.

Figs. 10 and 11 illustrate an embodiment in which the ball 358 of the portable acoustical instrument of the present invention moves along the ball track 357. Fig. 9 is a view showing the ball track 357 of the portable acoustical instrument of the present invention, Fig. The ball track 357 is located at the rotation part 350b and the ball slot 359 is positioned at the fixing part 350a for convenience of explanation. As the ball track 357 rotates, the ball 358 moves along the ball track 357 in the direction opposite to the rotating direction of the rotating portion 350b.

The ball track 357 includes a circular first track 3571 and a second track 3572 and a connecting track 3573 and a fixed track 3574 formed between the first track 3571 and the second track 3572 . The first track 3571 and the second track 3572 have different diameters and the first track 3571 and the second track 3572 have the track depth changed (inclined). The engaging portions 3571a and 3572a form a step to compensate for the depth difference between the first track 3571 and the second track 3572. [

10 is a diagram showing the positional relationship between the ball 358 and the ball track 357 and the ball slot 359 in a state in which the acoustic cable 345 is wound around the bobbin 353. FIG. The first track 3571 can continue to rotate along the first track 3571 when the ball 358 rotates in the first direction (the ball track 357 rotates in the second direction) when the ball 358 rotates in the second direction (the ball track 357 rotates in the first direction), the ball 358 is caught by the engaging portion 3571a to move along the connecting track 3573 to the second track (Fig. 9 (c), (d), and (e)).

11 is a diagram showing the positional relationship between the ball 358 and the ball track 357 and the ball slot 359 in a situation where the acoustic cable is fixed and released. The second track 3572 is inclined in a direction opposite to the first track 3571 and rotates along the second track 3572 when the ball 358 rotates in the second direction. 11 (a) and 11 (b), when the pulling force of the acoustic cable 345 is removed, the elasticity of the spring spring causes the ball track 357 to rotate in the second direction in the first direction And the ball 358 moves to the engaging fixed track 3574 in the engaging portion 3572a of the second track 3572. [

The fixed track 3574 is formed by a first portion 3574a extending in the first direction and a second portion 3574b extending in the second direction and has an elongated shape and has a first portion 3574a and a second portion 3574b, And stops at the corner portion 3574c to which the ball 3574b is connected to prevent the ball 358 from rotating in the first direction.

When the user again pulls the acoustic cable, the ball 358 moves in the second direction and moves to the first track 3571 along the second portion 3574b. ((C) and (d) of Fig. 11)

When the user shortly pulls and re-releases the acoustic cable, the acoustic cable is wound on the bobbin 353 (Figs. 10A and 10B) as the ball 358 continues to rotate in the first direction on the first track 3571, When the user pulls the audio cable 345 longer, the first track 3571 moves along the connecting track 3573 to the second track 3572 so that the ball 358 moves in the second direction and the acoustic cable continues to be pulled out ((C), (d), and (e) of FIG. 10).

That is, when the audio cable is drawn out, the rotation part 350b rotates in the first direction so that the ball 358 moves in the second direction along the second track 3572, and when the audio cable is received, the rotation part 350b The ball 358 moves in the first direction along the first track 3571 because the ball 358 rotates in the second direction. The ball 358 is located inside the ball slot 359 when in the first track 3571 and outside the ball slot 359 when in the second track 3572 and the fixed track 3574 or connection And is located in the center of the ball slot 359 when it is located on the track 3573.

According to the present invention, it is possible to provide a portable acoustic apparatus in which the electrical connection between the structures can be well maintained even if the rotating portion rotates in the rotating module.

Further, according to the present invention, it is possible to provide a portable acoustic apparatus that can minimize the number of parts provided in the rotary module.

In addition, according to the present invention, it is possible to provide a portable acoustic apparatus which can compactly manufacture a rotary module, which is one of the main components, and can reduce manufacturing costs.

The foregoing detailed description should not be construed in any way 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.

300: portable sound device 310: elastic band
311: shape memory alloy wire 312: second covering portion
313: first covering portion 315: connection portion
317: fastening hole 318: signal line hole
319: Signal line receiving part 320: Housing
321: upper case 322: first lower case
324: second lower case 325: ear bud holder
340: Earbud 345: Acoustic cable
350: rotation module 360: microphone
370: user input unit 375: sensing unit
380: control unit 381: main substrate
382: Signal line 385:
390: power supply unit 391: battery
350a: Fixing portion 350b:
351: shaft 353: bobbin
355: spring-loaded spring 357: ball track
3571: first track 3572: second track
3573: Connection Track 3574: Fixed Track
358: Ball 359: Ball Slot

Claims (15)

A body including an ear bud holder;
An ear bud detachably attached to the ear bud holder and outputting sound;
An acoustic cable extending from the body and connected to the earbud;
A main board positioned inside the main body; And
And a rotation module including a fixed portion fixed to the main body and a rotation portion rotating and unwinding or loosening the audio cable,
The fixing part of the rotation module includes:
shaft; And
And a pair of connection electrodes formed on the shaft and electrically connected to the main board,
The rotary part of the rotary module,
A bobbin including a concave portion that rotates about the shaft and into which the acoustic cable is wound;
A spring disposed at a lower portion of the recess and having an inner end connected to the shaft and an outer end connected to the bobbin to provide rotational force to the bobbin; And
And a pair of connection terminals connected to the acoustic cable and projecting inward of the bobbin and contacting the pair of connection electrodes,
And the pair of connection terminals are in contact with the pair of connection electrodes in different directions. The method according to claim 1,
Wherein the connection electrode includes a first connection electrode and a second connection electrode that are spaced apart from each other in the longitudinal direction of the shaft,
Wherein the connection terminal includes a first connection terminal contacting the first connection electrode and a second connection terminal contacting the second connection electrode. 3. The method of claim 2,
Wherein the rotation module further comprises an insulation ring fastened to the shaft between the first connection electrode and the second connection electrode. 3. The method of claim 2,
The shaft
The first connecting electrode including a metal material, the second nonmetal portion, the second connecting electrode including a metal material; And a third nonmetal portion in the form of a columnar structure stacked in this order. 5. The method of claim 4,
Wherein the first non-metallic portion includes a solid portion filled with the inside, the third non-metallic portion includes an empty hollow portion inside,
And a connection cable connecting the connection electrode and the main board through the hollow portion. 6. The method of claim 5,
The solid portion is located at a lower portion of the hollow portion,
Wherein the connection cable extends from an upper portion of the rotation module and is connected to the main board. The method according to claim 1,
Wherein the shaft comprises a non-metallic material,
Wherein the connection electrode includes a connection cable formed by coating a conductive material around the shaft of the non-metallic material, and connecting the shaft to the main board through the shaft. The method according to claim 1,
The connection electrode
And a groove recessed from the outer circumferential surface of the shaft. The method according to claim 1,
Wherein the connection terminal
And at least one bent portion, wherein the bent portion includes an elastic brush contacting the connection electrode. 10. The method of claim 9,
Wherein the bending portion includes a first bent portion for allowing the free end of the elastic brush to face the connection electrode, and a second bending portion contacting the connection electrode. The method according to claim 1,
Wherein the connection terminal includes a pogo pin having an elastic portion protruding from the inside of the bobbin and applying a force to the connection electrode so as to maintain a connection state with the connection electrode. The method according to claim 1,
When the user pulls the acoustic cable, the rotary unit rotates in the first direction, and when the acoustic cable is laid, the rotation of the rotary unit is fixed. When the user pulls the acoustic cable briefly and releases the rotary unit, And a rotation guide unit for controlling the rotation of the rotation unit so that the acoustic cable is wound around the bobbin. 13. The method of claim 12,
The rotation guide portion
A bobbin disposed at an upper portion of the bobbin or a lower portion of the bobbin,
A ball track comprising successively connected grooves;
A ball slot formed to face the ball track and extending in the radial direction of the rotation module; And
And a ball interposed between the ball track and the ball slot to move along the ball track and the ball slot,
Wherein one of the ball track or the ball slot is fixed and the other is rotated. The method according to claim 1,
Wherein the fixing portion includes a bracket covering at least one of an upper surface and a lower surface of the rotation portion,
The shaft is coupled to the bracket,
And the bracket is fixed to the main body. The method according to claim 1,
Wherein the main body includes a C-shaped elastic band to be worn on the neck of a user, and the rotation module is provided at both ends of the main body.

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