CN102547508B - Mother and child double-earphone structure and mobile terminal - Google Patents

Abstract

The invention discloses a mother and child double-earphone structure and a mobile terminal. The mother and child double-earphone structure comprises a mother earphone assembly and a child earphone assembly, wherein the mother earphone assembly comprises a mother earphone receiver and a mother earphone bar; the child earphone assembly comprises a child earphone receiver; a retractable sliding bar is also arranged in the mother earphone bar; a telephone transmitter is arranged at the tail end of the sliding bar; the mother earphone receiver and the telephone transmitter are connected with a mother earphone line; one end of a child earphone line is connected with the mother earphone line through a first signal connecting element; and the other end of the child earphone line is connected with the child earphone receiver. The invention provides the earphone structure which is convenient for a user to use.

Description

A mother-child double earphone structure and mobile terminal

technical field

The invention mainly relates to the field of sound transmission, in particular to a mother-child double earphone structure and a mobile terminal.

Background technique

With the increasing popularity of electronic products, especially mobile terminal applications such as mobile phones, notebooks, and hearing aids, the existing earphones of the above-mentioned terminal products are often entangled, knotted, and inconvenient to carry and store during use, which is difficult for most users. A lot of troubles have been caused, which has caused most users to give up the important function of using earphones. In addition, when using electronic products directly, users cannot avoid the electromagnetic radiation generated by electronic products (mobile phones, etc.), which brings great health and safety risks to users. For example, when people directly stick the mobile phone to the ear and use its speaker to make a call, the electromagnetic radiation produced by the mobile phone will directly cause damage to the central nervous system of the human brain. For this reason, people have found through experiments and research that when the mobile phone is kept at a certain distance from the brain of the human body, the damage caused by electromagnetic radiation can be effectively reduced. Reduced by more than 90%.

Therefore, there is an urgent need for an earphone structure that is easy to use.

Contents of the invention

The invention proposes a mother-child double earphone structure and a mobile terminal, which provides a convenient earphone structure for users.

Technical scheme of the present invention is realized like this:

A mother and child double earphone structure, including a mother earphone assembly and a child earphone assembly;

The female earphone assembly includes a female earphone receiver and a female earphone rod;

The sub-earphone assembly includes a sub-earphone receiver;

A retractable slide bar is also arranged in the female earphone bar, and a microphone is arranged at the end of the slide bar;

Both the female earphone receiver and the microphone are connected to the female earphone line, one end of the sub-earphone line is connected to the female earphone line through a first signal connection unit, and the other end of the sub-earphone line is connected to the sub-earphone line. Handset connected.

Preferably, the slide bar is provided with a signal wire groove through which the female earphone wire passes.

Preferably, the microphone is also provided with a sound cavity.

Preferably, the side of the sound chamber close to the mouth is further provided with a sound inlet groove, and a sound filter membrane is arranged in the sound inlet groove.

Preferably, the female earphone assembly further includes a first earphone cord take-up device for taking up the sub-earphone cord.

Preferably, the female earphone assembly further includes a female earphone front cover and a female earphone rear cover, the female earphone receiver is arranged between the female earphone front cover and the female earphone rear cover, and the first earphone wire The wire take-up device is arranged between the earpiece of the female earphone and the rear cover of the earphone;

The sub-earphone assembly also includes a sub-earphone front cover and a sub-earphone rear cover, and the sub-earphone receiver is arranged between the sub-earphone front cover and the sub-earphone rear cover.

Preferably, the sub-earphone assembly can be buckled on the female earphone rod through a buckle.

Preferably, the first earphone cord take-up device includes:

The wire reel arranged on the main shaft, the wire reel is provided with a ring rim, the inside of the ring rim is provided with a torsion spring, the outer end of the torsion spring is fixed on the ring rim, and the torsion The inner end of the spring is fixed on the main shaft, and is used to drive the reel to rotate to rewind the sub-earphone cable, and the sub-earphone cable wound on the reel is connected to The unit is connected with the female earphone cable.

Preferably, the first earphone cord take-up device is also provided with a braking device for controlling the rotation of the reel, and the first earphone cord take-up device can also be used for the second earphone cord take-up device .

Preferably, it also includes a second earphone cord take-up device, and the second earphone cord take-up device includes:

A motor that provides driving force, the motor drives the reel disposed on the main shaft through the transmission device, and the female earphone cable wound on the reel is connected to the external signal through the second signal connection unit.

Preferably, the transmission device includes:

a worm connected to the drive shaft of the motor;

The first gear, the first gear is a two-stage gear, and one stage of the first gear is vertically engaged with the worm;

The second gear is set on the same main shaft as the wire reel, and the second gear is engaged with the other stage of the first gear, and the second gear drives the wire reel to wind up the female According to the difference of the transmission ratio, the transmission device can also be composed of a plurality of multi-stage gears.

Preferably, the second earphone cord take-up device further includes:

The casing, the casing includes an upper casing and a base, an opening is arranged on the side wall of the casing, a pulley is arranged in the opening, the pulley is arranged on the base through a pulley shaft, and the female earphone line passes through the The pulley extends out of the housing.

Preferably, the housing is further provided with a crimping wheel cooperating with the pulley to clamp the female earphone wire, and the female earphone wire passes between the pulley and the crimping wheel.

Preferably, the second earphone cord take-up device further includes a clutch device arranged between the motor and the cord reel, and the engagement or separation of the motor and the cord reel is realized through the clutch device .

Preferably, the clutch device includes a compression spring arranged on the main shaft, one end of the compression spring is in contact with the bottom surface of the base, and the other end of the compression spring is in contact with the second gear. The purpose of clutching is realized by the force difference between the speed change device and the reel.

Preferably, the second signal connection unit includes a circuit board, and the circuit board is provided with a plurality of ring-shaped conductive sheets, and the conductive sheets are connected to the female earphone wire, and the conductive sheets are connected to each other through spring contact pins and contact pins. The leads are connected to external signals, and the spring contact pins communicate with the conductive sheet.

Preferably, it also includes a second earphone cord take-up device, and the second earphone cord take-up device includes:

Drive System;

a driving wheel arranged on one side of the driving system, the driving wheel is driven by the driving system;

a support wheel arranged on the other side of the drive system;

A winding coil surrounding the driving wheel and the supporting wheel, the winding coil is used for winding the female earphone wire, and the female earphone wire wound on the winding coil is connected with the second signal connection unit The external signal is connected, and the driving wheel drives the supporting wheel to rotate through the winding coil, so that the female earphone wire is wound on the winding coil for winding up.

Preferably, the second earphone cord take-up device further includes:

A clutch device arranged between the drive system and the drive wheel, the drive system drives the drive wheel through the clutch device, and when the female earphone cable drives the drive wheel to rotate or retracts When the line is complete separate the drive system and the drive wheels.

Preferably, the drive system is a micro motor, and the clutch device is a cone-shaped gear.

Preferably, the driving wheel includes a first circular side piece and a second circular side piece, the first circular side piece and the second circular side piece are connected by a main shaft, and the first circular side piece The inner surface of the side piece is provided with a plurality of gears arranged in a circle around the main shaft;

The micromotor engages with or separates from the cone-shaped gear through a gear arranged on the micromotor main shaft.

Preferably, the winding coil is provided with an annular winding groove formed by a plurality of U-shaped wire holding grooves, and the female earphone wire is wound in the annular winding groove when being wound up.

Preferably, it also includes:

An oblong shell, an opening is arranged on the side wall of the shell, and the female earphone wire extends out of the shell through the opening.

Preferably, the second signal connection unit includes:

A plurality of signal connection shrapnels arranged outside the U-shaped cable slot, the female earphone cable is connected to the signal connection shrapnel;

A plurality of signal communication tracks are provided on the inner wall of the housing and can contact and communicate with the signal communication elastic pieces. The signal communication tracks are composed of annular conductive metal sheets, and are signally connected to the main board of the outer terminal through signal lines.

Preferably, the supporting wheels are a plurality of balls or rollers arranged in a semicircle.

A mobile terminal includes a terminal body, and the mobile terminal further includes the above-mentioned dual female earphone structure.

The technical solution of the present invention is provided with a double earphone structure including a female earphone and a sub-earphone, which provides a user-friendly earphone structure; It is beneficial to take up the main earphone line (single line), and can separate the sub-earphones from the mother earphone, so as to achieve the effect of two channels. When dual-channel and stereo sound are not needed, only the female earphone can be used; if dual-channel and stereo sound are required, the sub-earphone and sub-earphone cable can be pulled out from the female earphone, and the sub-earphone and the mother earphone can be connected separately. Wear it on the left and right ears to listen to the audio, thus bringing a binaural and stereo experience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a structural schematic diagram of the first embodiment of a mother-child double earphone structure of the present invention;

Fig. 2 is a schematic cross-sectional view of a mother-child double earphone structure of the present invention;

Fig. 3 is a side view of a mother-child double earphone structure of the present invention;

4 is a cross-sectional view of the first earphone wire take-up device in a mother-child double earphone structure of the present invention;

5 is a schematic structural view of the first earphone wire take-up device in a mother-child dual earphone structure of the present invention;

Fig. 6 is a cross-sectional view of the composition structure diagram of the second earphone cord take-up device of the present invention;

Fig. 7 is a schematic diagram of the relationship between the driving system, the clutch device and the driving wheel in the second earphone cord take-up device;

Fig. 8 is a schematic cross-sectional view of the winding coil of the second earphone cord take-up device and the U-shaped wire holding groove arranged on the winding coil;

Fig. 9 is a schematic diagram of the relationship between the U-shaped cable slot, the signal connection device, and the housing in the second earphone cable take-up device;

Fig. 10 is a cross-sectional view of another embodiment of the second earphone cord take-up device of the present invention;

Fig. 11 is an exploded view of another embodiment of the second earphone cord take-up device of the present invention;

Fig. 12 is a structural diagram of a second signal connection unit in the second earphone cord take-up device described in Fig. 11;

Fig. 13 is an internal schematic diagram of another embodiment of the second earphone cord take-up device of the present invention;

Fig. 14 is a schematic diagram of the state when the sliding bar of the mother-child double earphone structure of the present invention is not pulled out;

Fig. 15 is a schematic diagram of the state when the sliding bar of the mother-child double earphone structure of the present invention is pulled out.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Referring to Fig. 1 to Fig. 4 and Fig. 14 and Fig. 15, a structural schematic diagram of a first embodiment of a mother-child dual earphone structure according to the present invention is shown. The mother-child double earphone structure includes a female earphone assembly and a sub-earphone assembly, the female earphone assembly includes a female earphone receiver 52, and the female earphone assembly also includes a first earphone wire take-up wire for winding the child earphone wire 512 Device 53; the sub-earphone assembly includes a sub-earphone receiver 59; the female earphone receiver 52 is connected to the female earphone line 6, and one end of the sub-earphone line 512 is connected to the female earphone line 6 through the first signal connection unit 5106 The other end of the sub-earphone line 512 is connected to the sub-earphone receiver 59.

Wherein, the female earphone assembly includes a female earphone front cover 51, a female earphone rear cover 54, a female earphone receiver 52 disposed between the female earphone front cover 51 and the female earphone rear cover 54, and also includes a The first earphone wire take-up device 53 for winding the sub-earphone line 512 between the female earphone receiver 52 and the female earphone rear cover 54; the sub-earphone assembly includes a sub-earphone front cover 58, a sub-earphone rear cover 510 , and the sub-earphone earpiece 59 disposed between the sub-earphone front cover 58 and the sub-earphone rear cover 510 .

The female earphone receiver 52 is connected to the female earphone line 6, one end of the sub-earphone line 512 is connected to the female earphone line 6 through the first signal connection unit 5106, and the other end of the sub-earphone line 512 is connected to the sub-earphone line 510. An earphone receiver 59 is connected.

The female earphone assembly also includes a female earphone rod 55 disposed on the rear cover 54 of the female earphone, and the sub-earphone assembly can be buckled on the female earphone rod 55 through a buckle 516 .

When only one earphone (female earphone) needs to be used, the sub-earphone wire 512 is wound up in the first earphone wire take-up device 53 on the female earphone assembly, and the sub-earphone assembly passes through a buckle Part 516 can be buckled on the female earphone bar 55, and at this time, the other end is buckled at 516 of the female earphone bar, and the female earphone assembly and the sub-earphone assembly are integral in appearance ( As shown in Figure 1). When dual-channel and stereo sound are required and dual earphones are used, the sub-earphone wire 512 can be pulled out from the first earphone wire take-up device 53 in the female earphone assembly, and then the sub-earphone is inserted on the other ear, that is It can complete dual-channel and stereo dual-headphone listening.

The sub-earphone rear cover 510 of the sub-earphone assembly can also be provided with a sub-earphone rod 511. When the sub-earphone assembly is not needed, the sub-earphone rod 511 can be inserted into the socket of the female earphone assembly. Button 515, so that the appearance of the female earphone assembly and the sub-earphone assembly is more like a whole.

In addition, the female-female double earphone structure further includes a microphone 56 , and the microphone 56 is arranged on the female earphone rod 55 and connected to the female earphone cable 6 . A switch 514 for controlling the second earphone wire take-up device may also be arranged on the female earphone assembly.

It should be noted that, in order to achieve a better use effect, the sub-earphone cable 512 of the present invention can be thinner and shorter than the female earphone cable 6, and only needs to be 30 to 40 centimeters. The first earphone wire take-up device 53 of the coil earphone cord 512 can be designed to be very small, but the length of the female earphone cord 6 is generally about one meter or longer, and the wire diameter is also thicker than that of the son earphone cord 512. The second earphone wire take-up device of the female earphone wire 6 is larger than the volume of the first earphone wire take-up device 53, but the construction principles of the two are basically the same, that is, the first earphone wire take-up device 53 and the first earphone wire take-up device 53 There is not much difference between the two earphone line take-up devices in essence, they can be replaced with each other, and both can use springs or micro motors to provide driving force. In addition, the sub-earphone wire 512 can be two signal wires, and the female earphone wire 6 can be 4 or more signal wires. Of course, the size and length of the sub-earphone wire 512 and the female earphone wire 6 can be adjusted in the present invention. And the number of signal lines is not limited, and the scope of the present invention cannot be limited by the preferred technical solution of the present invention.

Referring to Fig. 4 and Fig. 5, the first earphone cord take-up device 53 includes:

The winding reel 5102 arranged on the main shaft 5103, the reel 5102 is provided with a ring 5112, the inside of the ring 5112 is provided with a torsion spring 513, the outer end of the torsion spring 513 is fixed on the On the ring 5112, the inner end of the torsion spring 513 is fixed on the main shaft 5103, and the sub-earphone cable 512 wound on the reel 5102 is connected to the female earphone cable through the first signal connection unit 5106. The headphone cable 6 is connected.

The first earphone cord take-up device 53 is also provided with a brake device 5109 for controlling the rotation of the cord reel 5102 , and the first earphone cord take-up device 53 also includes a housing 5101 .

Preferably, the main shaft 5103 is a hollow circular shaft, and the female earphone cable 6 passes through the middle of the circular shaft to connect with the female earphone receiver 52, and the branched signal line passes through the first signal connection unit 5106 Connect with the sub earphone line 512.

The relationship between the spring and the wire reel 5102 in the first earphone wire take-up device 53 shown in Fig. 5 is set inside and outside. setting (as shown in FIG. 4 ) or other setting structures, which is not limited in the present invention.

It should be noted that, in addition to the structure described above, the first earphone cord take-up device 53 can also adopt the structure of the second earphone cord take-up device described below, that is, in the present invention, the The structures of the first earphone cord take-up device 53 and the second earphone cord take-up device are basically the same in essence and can be replaced with each other.

In another embodiment of the mother-child double earphone structure of the present invention, the mother-child double earphone structure further includes a second earphone wire take-up device.

Referring to FIG. 6 , it is a schematic cross-sectional view of the first embodiment of the second earphone cord take-up device of the present invention. The second earphone cord take-up device includes a driving system 1 , a driving wheel 2 , a supporting wheel 20 and a winding coil 3 .

The driving system 1 may be a micro motor, a spring or other driving devices capable of providing power. In the embodiment of the present invention, the driving system 1 is preferably a micro motor.

The driving wheel 2 is arranged on one side of the driving system 1 , and the driving wheel 2 is driven by the driving system 1 .

The supporting wheel 20 is disposed on the other side of the driving system 1 .

The winding coil 3 surrounds the driving wheel 2 and the support wheel 20, the winding coil 3 is used to wind the female earphone wire 6, and the female earphone wire 6 wound on the winding coil 3 passes through the second The signal connection unit is connected with an external signal, and the driving wheel 2 drives the supporting wheel 20 to rotate through the winding coil 3, so that the female earphone cable 6 is wound on the winding coil 3 for winding up.

The second earphone cable take-up device also includes a clutch device 8 arranged between the drive system 1 and the drive wheel 2, the drive system 1 drives the drive wheel 2 through the clutch device 8, and The drive system 1 and the drive wheel 2 are separated when the female earphone cable 6 is unwound to drive the drive wheel 2 to rotate.

Through the setting of the clutch device 8, when the female earphone cable 6 is taken up, the drive system 1, such as a micro motor, starts to work, and the drive system 1 drives the drive wheel 2 through the clutch device 8, The driving wheel 2 drives the supporting wheel 20 to rotate through the winding coil 3 , so that the female earphone cable 6 whose thread end is fixed on the winding coil 3 can be wound on the winding coil 3 . When performing the unwinding operation of the female earphone wire 6 (the user pulls out the female earphone wire 6), the female earphone wire 6 drives the driving wheel 2, the winding coil 3 and the support wheel 20 to rotate. At this time, the clutch device 8 The separation of the driving system 1 and the driving wheel 2 reduces the resistance of the pull wire and does not affect the driving system 1 such as the micro motor. At the same time, when the winding-up of the female earphone cable 6 is completed or the winding-up resistance exceeds its preset resistance, the clutch device 8 can make the driving wheel 2 and the driving system 1 slip against each other, or separate the driving system 1 and the driving system 1. The driving wheel 2 makes the driving system 1 such as a micro motor idle, so as to protect the micro motor from being damaged.

With reference to Fig. 7, described clutch device 8 is preferably a conical gear, certainly, those skilled in the art can understand, described clutch device 8 can also be conical gear, cylindrical gear or other types of clutch device 8, the present invention This is not limited.

The drive wheel 2 includes a first circular side piece 22 and a second circular side piece 21, and the first circular side piece 22 and the second circular side piece 21 are fixed by a main shaft 23, as shown in FIG. 8 As shown, the inner surface of the first circular side piece 22 is provided with a plurality of gears 9 arranged in a circle around the main shaft 23 . Described micromotor is meshed with described truncated cone gear (clutch device 8) by the gear 18 that is arranged on the described micromotor main shaft, and described truncated cone gear is meshed with gear 9 on the described driving wheel 2, thereby makes described The drive system 1 drives the drive wheel 2 through the cone-shaped gear.

When described clutch device 8 is a gear, the gear that is arranged on the micromotor main shaft and the gear 9 that is arranged on the described drive wheel 2 are matched with the gear as clutch device 8, if described clutch device 8 If it is a conical gear, the gear arranged on the main shaft of the micro-motor is also a conical gear, and it is matched with each other; if the clutch device 8 is a conical gear, the gear arranged on the main shaft of the micro-motor It can also be a conical gear. Like this, when micro-motor works, the gear on the micro-motor main shaft closely meshes as the gear of clutch device 8, and the gear 9 on the driving wheel 2 as the gear of clutch device 8 tightly meshes again, thereby drives described driving wheel 2 to rotate; When the female earphone wire 6 is paid out to make the driving wheel 2 rotate, the gears as the clutch device 8 will loosen and no longer engage the gears on the driving wheel 2 and the micro motor, so that the female earphone wire 6 can be pulled out easily, and The driving wheel 2 will not drive the micro-motor to rotate when it rotates, and will not have adverse effects on the micro-motor.

The second earphone cord take-up device further includes an oblong housing 5 , an opening is arranged on a side wall of the housing 5 , and the female earphone cord 6 protrudes out of the housing 5 through the opening.

Through the setting of the driving system 1, the driving wheel 2 and the supporting wheel 20 of the present invention, the second earphone wire take-up device forms an oblong appearance, thereby saving volume to the greatest extent and winding longer female wires. Headphone cable6.

Referring to Fig. 8, in the embodiment of the present invention, the winding coil 3 may be a belt loop or crawler structure, and may be made of plastic, metal, metal-like materials and the like. In order to better fix the wound female earphone wire 6, a plurality of U-shaped wire clamping grooves 4 can be arranged at regular intervals (2 to 8 mm in the embodiment of the present invention) on the winding coil 3, The plurality of U-shaped wire holding grooves 4 are arranged and combined to form an annular winding groove, and the female earphone cable 6 is wound in the annular winding groove when being wound up.

Referring to Figure 9, the second signal connection unit includes:

A plurality of signal connection elastic pieces 15 arranged outside the U-shaped cable slot 4 , the female earphone cable 6 is connected to the signal connection elastic pieces 15 through the earphone signal line.

A plurality of signal communication tracks 16 arranged on the inner wall of the housing 5 to contact and communicate with the signal communication shrapnel 15, the signal communication tracks 16 are composed of annular conductive metal sheets, and communicate with the main board signal of the outer terminal through the signal line. connect.

The earphone end of the female earphone cable 6 is fixed on a U-shaped cable slot 4 , and then a plurality of earphone signal lines are separated to connect with the signal connecting shrapnel 15 .

It should be noted that the signal connecting shrapnel 15 is arranged at a U-shaped cable slot 4 of the earphone head, and the signal connecting track 16 needs to surround the inner surface of the housing 5 for a full circle. 4. When rotating, it is always in frictional sliding contact with the signal communication track 16, so as to ensure that it is in a communication state at any time.

In one embodiment of the present invention, the support wheel 20 is a circular object. In another embodiment of the present invention, referring to FIG. 10 , the support wheel 20 is a plurality of balls 25 or The roller 25 or other objects that can roll and slide, compared with the support wheel 20 being a circular object, adopting balls or rollers can further reduce the volume of the earphone wire take-up device.

Through the structure of the driving system 1, the driving wheel 2 and the support wheel 20 in the second earphone cord take-up device described in the technical solution of the present invention, the winding length of the female earphone cord 6 is greatly increased, and the headphone cord take-up device is reduced The volume of the second earphone wire take-up device with reduced volume can be better assembled into various types of mobile terminals. In addition, the present invention utilizes the interaction between the main shaft gear of the drive system 1 and the inner gear of the drive wheel 2 and the winding coil 3 to automatically form a speed change device, thereby greatly increasing the torque of the drive system 1 such as a micro-motor, and also greatly increasing the torque of the drive system 1. The winding length of the female earphone cable 6 is specified.

Referring to FIG. 11 , it shows an exploded view of another preferred embodiment of a second earphone cord take-up device in the present invention. The second earphone cable take-up device includes a motor 111, a speed change device, a cable reel 115, a second signal connection unit 116 and a casing. Wherein, when the second earphone cord take-up device is arranged inside another terminal or as the first earphone cord take-up device 53 , the housing can be omitted.

The motor 111 is used to provide driving force to the reel 115, and the reel 115 is driven to rotate through the transmission device. The motor 111 is powered by an external power supply and can be controlled by an external switch. The external power supply and external switches are not shown in the drawings.

In one embodiment of the second earphone wire take-up device of the present invention, the transmission device includes a worm 112, a first gear 113 and a second gear 114; the worm 112 is connected to the drive shaft of the motor 111, so The first gear 113 is a two-stage gear, the worm 112 is vertically engaged with the first stage of the first gear 3, and the other stage of the first gear 113 is engaged with the second gear 114. The second gear 114 drives the wire reel 115 to take up the wire.

The housing includes an upper shell 118 and a base 117, the motor 111 is arranged parallel to the bottom surface of the base 117, the first gear 113 is arranged perpendicular to the bottom surface of the base 117 through a gear shaft 1117, and the base 117 is vertical A main shaft 1118 is arranged on the bottom surface, and the second gear 114, the reel 115, and the second signal connection unit 116 are all arranged on the main shaft 1118. Such an arrangement can minimize the size of the earphone wire take-up device volume of.

It should be noted that the two gears shown in Figure 11 are only for the convenience of describing this embodiment, and the present invention does not limit the number of gears, and those skilled in the art can determine the number of gears according to needs when implementing the present invention. number, size, and the positional relationship between the motor 111 and the reel 115, for example, three or more gears can be set, wherein the size of the gears is set according to a certain ratio, thereby forming a speed change device for easy control The motor 111 drives the speed of the cord reel 115 .

In another embodiment of the second earphone wire take-up device of the present invention, the motor 111 can be arranged parallel to the main shaft 1118. At this time, it is enough for the speed change device to include at least one gear, and the gear is arranged on the On the main shaft 1118, it engages with the worm 112, and the motor 111 drives the reel 115 to rotate; of course, those skilled in the art can also determine the number, size and the number of gears as required when implementing the present invention. The positional relationship between the motor 111 and the reel 115, for example, two or more gears can be set, wherein the size of the gears is set according to a certain ratio to form a speed change device so as to facilitate the control of the motor 111 to drive The speed of the cord reel 115 . The difference between this embodiment and the first embodiment is that the motor 111 is arranged vertically, which may increase the volume of the earphone wire take-up device.

An opening 119 is provided on the side wall of the housing, and there is a pulley 1111 in the opening 119, the pulley 1111 is set on the base 117 through the pulley shaft 1112, and the female earphone wire 6 extends through the pulley 1111. out of the shell, thereby reducing the friction between the female earphone wire 6 and the shell, and better protecting the female earphone wire 6.

A wire reel baffle 1113 can also be set on the wire reel 115 to separate the second gear 114 from the female earphone wire 6 on the wire reel 115, and also can make the female earphone wire 6 It is better wound on the reel 115, so as to better protect the female earphone wire 6.

If the rotation of the motor 111 directly drives the reel 115 to rotate to take up the wire, since the speed of the motor 111 is as high as several thousand to tens of thousands of revolutions per minute, such a high speed makes the reel 115 retract the female earphone wire 6 in an instant. Excessive wire take-up speed is very easy to cause injury to products and users, but in the present invention, through the mutual transmission between multiple gears, the rotation speed of the wire reel 115 can be reduced to a reasonable and safe range and the motor is enhanced. 111 torque power.

Referring to FIG. 12 , it shows a structural diagram of the second signal connection unit 116 in the second earphone cord take-up device.

The second signal connection unit 116 includes a circuit board 220 and a plurality of ring-shaped conductive sheets 230. The plurality of ring-shaped conductive sheets 230 are connected to one end of the female earphone cable 6, and lead wires through the spring contact pin 1110 and the contact pin (not shown in the figure) It is connected with an external signal line (when the second earphone line take-up device is arranged inside another terminal, it is a signal line inside the terminal). With the above-mentioned structure, when the reel 115 rotates so that the female earphone wire 6 is wound or unfolded, one end of the female earphone wire 6 is always connected to the external signal through the annular conductive sheet 230 and the spring contact pin 1110, which maintains the connectivity and effectiveness of the signal. sex. Certainly, the second signal connection unit 116 of the present invention may also be a wireless connection second signal connection unit 116 .

In another embodiment of the second earphone wire take-up device of the present invention, the earphone wire take-up device further includes a clutch device, and the clutch device includes a compression spring 1115 arranged on the main shaft, and the compression spring 1115 One end is in contact with the bottom surface of the base through a push ring 1116 , and the other end of the compression spring 1115 is in contact with the second gear 114 through a washer 1114 .

Those of ordinary skill in the art can understand that the compression spring 1115 in this embodiment is only one way to realize the clutch device, and the clutch device can also be realized in other ways.

The motor 111 drives the reel 115 to take up the wire through the worm screw 112, the first gear 113 and the second gear 114. When the wire is taken up, the user often does not turn off the power of the motor 111 in time, which will cause the motor 111 to continue to work. At this time, the voltage of the motor 111 will increase, the torque of the motor 111 will increase, and the clutch device will cause the second gear 114 in contact with the compression spring 1115 to form idling and the reel 115 will not rotate. Thereby, components such as the motor 111 and the female earphone cable 6 are effectively protected.

In order to prevent the earphone wires from being too loose and tightly arranged in the reel, referring to Fig. 13 , there is also a crimping wheel 1212 on the other side of the pulley 1111, and the female earphone wire 6 is connected from the pulley 1111 to the The crimping wheels 1212 pass through, and the pulley 1111 and the crimping wheel 1212 cooperate with each other to hold the female earphone cable. When the earphone cable is pulled, the earphone cable can be arranged in the reel It is tighter, and at the same time, when the headphone wire is pulled out halfway and stops, it can effectively prevent the pulled out headphone wire from retracting, so that the remaining headphone wire in the reel will not be loose, and it can prevent the headphone wire in the reel from being loose. After being loose, they entangle each other and get stuck.

In FIGS. 14 and 15 , the relationship between the sound inlet slot 561 , the microphone 56 , the slide bar and the female earphone bar 55 is shown. A retractable sliding rod is also arranged in the female earphone rod 55 , and a microphone 56 is arranged at the end of the sliding rod. In terms of specific implementation, the slider can be set in the form of multiple sub-sliders of different sizes, and the expansion and contraction of the entire slider can be realized by shrinking the small sub-slider into the large sub-slider. Of course, the There are other implementations of the telescopic slide bar, which are not limited in the present invention. Through this design, a slide bar that can push and pull out the multi-section slide bar is set in the female earphone bar 55, the small slide bar 559 can be pulled out from the large slide bar 558, and the microphone 56 is arranged at the end of the slide bar. In this way, after the slide bar is pulled out from the female earphone bar 55, the length of the female earphone bar 55 can be increased in disguise, so that the microphone 56 is closer to the sound source (mouth) to increase the sound effect during the call, so that It is more convenient for users to use.

In addition, after the earphone wire (may be the female earphone wire 6) is connected to the end of the slider, a plurality of signal wires 560 can be separated, and the plurality of signal wires 560 separated are respectively connected with the microphone 56 and arranged on the slider Connect the female earphone cable 6 in the signal line groove of the mobile phone, so that no matter how the slide bar is pushed or pulled, the signal will always remain unimpeded.

In addition, a sound chamber is set on the microphone 56 (such as the front or the bottom of the microphone 56), and a sound inlet groove 561 is also arranged on the side of the sound chamber near the mouth, and a filter is arranged in the sound inlet groove. sound film. The outgoing sound enters from the sound inlet groove 561, then enters the sound cavity through the sound filter membrane, and enters the microphone 56 from the sound cavity, which can make the sound received by the microphone 56 clearer, prevent sound resonance, and remove the The echo and the interference of external noise are reduced, thereby greatly increasing the effect of the speaking voice and improving the user experience.

In addition, the present invention also discloses a mobile terminal. In addition to the terminal body, the mobile terminal also includes the mother-child double earphone structure described in the above embodiments. The terminal body can be MP3, MP4, MP5, computer, Handheld game consoles, mobile phones and other electronic devices that can use headphones.

The technical solution of the present invention is provided with a double earphone structure including a female earphone and a sub-earphone, and the sub-earphone wire 512 of the sub-earphone is rewound by a wire take-up device arranged on the female earphone, which is beneficial to the take-up of the female earphone line (single line), It can also separate the sub-earphones from the mother earphones, so as to achieve a dual-channel effect. When dual-channel and stereo sound are not needed, only the female earphone can be used; if dual-channel and stereo sound are required, the sub-earphone and the sub-earphone line 512 can be pulled out from the female earphone, and the sub- and female earphones can be connected to each other. Wear it on the left and right ears to listen to the audio, so as to bring a binaural and stereo experience.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention. within the scope of protection.

Claims (14)

1. A mother and child double earphone structure, is characterized in that, comprises female earphone assembly and child earphone assembly; The female earphone assembly includes a female earphone receiver and a female earphone rod; The sub-earphone assembly includes a sub-earphone receiver; A retractable slide bar is also arranged in the female earphone bar, and a microphone is arranged at the end of the slide bar; Both the female earphone receiver and the microphone are connected to the female earphone line, one end of the sub-earphone line is connected to the female earphone line through a first signal connection unit, and the other end of the sub-earphone line is connected to the sub-earphone line. handset connection; It also includes a second earphone cord take-up device, and the second earphone cord take-up device includes: Drive System; a driving wheel arranged on one side of the driving system, the driving wheel is driven by the driving system; a support wheel arranged on the other side of the drive system; A winding coil surrounding the driving wheel and the supporting wheel, the winding coil is used for winding the female earphone wire, and the female earphone wire wound on the winding coil is connected with the second signal connection unit External signal connection, the driving wheel drives the support wheel to rotate through the winding coil, so that the female earphone wire is wound on the winding coil for winding; The second earphone wire take-up device also includes: A clutch device arranged between the drive system and the drive wheel, the drive system drives the drive wheel through the clutch device, and when the female earphone cable drives the drive wheel to rotate or retracts separating the drive system and the drive wheels when the line is complete; The driving system is a micro-motor, and the clutch device is a conical gear; The driving wheel includes a first circular side piece and a second circular side piece, the first circular side piece and the second circular side piece are connected by a main shaft, and the first circular side piece The inner surface is provided with a plurality of gears arranged in a circle around the main shaft; The micromotor engages with or separates from the cone-shaped gear through a gear arranged on the micromotor main shaft. 2 . The mother-child double earphone structure according to claim 1 , wherein a signal wire groove for passing the female earphone wire is arranged on the slide bar. 3 . 3. The mother-child pair earphone structure according to claim 2, characterized in that, the microphone is further provided with a sound chamber. 4. The mother-child double earphone structure according to claim 3, characterized in that, a sound inlet groove is provided on the side of the sound chamber close to the mouth, and a sound filter membrane is arranged in the sound inlet groove. 5 . The female and child double earphone structure according to any one of claims 1 to 4 , wherein the female earphone assembly further includes a first earphone cord take-up device for winding the child earphone cord. 6 . 6. The mother-child double earphone structure according to claim 5, wherein the female earphone assembly also includes a female earphone front cover and a female earphone rear cover, and the female earphone earpiece is arranged on the female earphone front cover and the female earphone rear cover. Between the female earphone back cover, the first earphone wire take-up device is arranged between the female earphone earpiece and the female earphone back cover; The sub-earphone assembly also includes a sub-earphone front cover and a sub-earphone rear cover, and the sub-earphone receiver is arranged between the sub-earphone front cover and the sub-earphone rear cover. 7 . The mother-child double earphone structure according to claim 6 , wherein the sub-earphone assembly can be buckled on the female earphone rod through a buckle. 8 . 8. The mother-child double earphone structure according to claim 7, characterized in that, the first earphone wire take-up device comprises: The winding reel arranged on the main shaft, the reel is provided with a rim, the inside of the rim is provided with a torsion spring, the outer end of the torsion spring is fixed on the rim, and the torsion The inner end of the spring is fixed on the main shaft, and is used to drive the reel to rotate to rewind the sub-earphone cable, and the sub-earphone cable wound on the reel is connected to The unit is connected with the female earphone cable. 9. The mother-child double earphone structure according to claim 8, wherein the first earphone wire take-up device is further provided with a braking device for controlling the rotation of the cord reel. 10. The mother-child double earphone structure according to claim 1, characterized in that, the winding coil is provided with an annular winding groove formed by a plurality of U-shaped wire holding grooves, and the female earphone wire is drawn by Wound in the annular winding groove. 11. The mother-child pair earphone structure according to claim 10, further comprising: An oblong shell, an opening is arranged on the side wall of the shell, and the female earphone wire extends out of the shell through the opening. 12. The mother-child pair earphone structure according to claim 11, characterized in that, the second signal connection unit comprises: A plurality of signal connection shrapnels arranged outside the U-shaped cable slot, the female earphone cable is connected to the signal connection shrapnel; A plurality of signal communication tracks are provided on the inner wall of the housing and can contact and communicate with the signal communication elastic pieces. The signal communication tracks are composed of annular conductive metal sheets, and are signally connected to the main board of the outer terminal through signal lines. 13. The mother-child double earphone structure according to claim 12, characterized in that, the support wheels are a plurality of balls or rollers arranged in a semicircle. 14. A mobile terminal, comprising a terminal body, characterized in that the mobile terminal further comprises the mother-child double earphone structure according to claim 13.