CN2564419Y - Modular and improved structure of hands-free handset for vehicles - Google Patents

Abstract

The utility model provides a modularization improvement structure of automobile-used handfree earphone, is to modularize the handfree earphone, wherein includes front cover, back cover, detains and holds piece and supporting part, can match the fifty percent discount formula mobile phone of different brands or models through the utility model and use, only need to change this and hold piece and supporting part and realize; just the utility model discloses an internal circuit is equipped with FM audio signal module and charge control switch, and wherein the FM audio signal module includes: the device comprises a signal amplifying circuit, an FM modulation module, a filter and a transmitting antenna; when the hand-free receiver receives the sound signal of the mobile phone, the sound signal is processed and converted into FM audio signal, and the signal is transmitted to the radio or FM receiver by the antenna, and the sound is sent out through the loudspeaker of the radio or FM receiver.

Description

Modular and improved structure of hands-free handset for vehicles

technical field

The utility model relates to a modular improved structure of a hands-free handset for a vehicle, in particular to a mobile phone that is applicable to a foldable large-screen mobile phone, and can also convert sound signals into FM signal audio signals for wireless transmission. Hands-free handset and modular device.

Background technique

The generally known hands-free handset structure is composed of a front cover and a back cover, and a clamping part is arranged on both sides of the seat body to clamp the mobile phone and fix it, but the hands-free handsets used on the market are all Compatible with upright mobile phones, but foldable mobile phones do not have a suitable speakerphone holder.

Please refer to U.S. Patent No. 6,304,764 for the known technology of hands-free FM audio transmission. The FM audio transmission mentioned in this patent is the conversion technology of FM audio. The circuit required for audio conversion is directly arranged on the motherboard of the speakerphone, so that the circuit for FM audio conversion cannot be used according to the user's needs.

In addition, regarding the existing technology of the modular improvement structure of the hands-free handset for vehicles, please also refer to the patent cases of No. 00224216.8, No. 01234854.6 and No. 01234807.4 in mainland China, which are previously created by the applicant. The improved structure of the handset includes a base for placing a mobile phone, and a buckle element on the base, which can firmly fix the mobile phone on the base, and use the connector of the base to combine with the mobile phone, so that incoming calls can pass through The speaker output, in addition, the resonance is set outside the speaker, so that the output sound is clearer, rounder and more concentrated, so that the driver can communicate with the caller clearly while driving, avoiding poor call quality, and a switch button is set on the base, which can Control sound is output from speakers or headphones.

And the Chinese mainland patent No. 01234854.6 patent case is a wireless microphone structure, the wireless microphone is a structure that rotates in all directions, allowing the user to adjust the wireless microphone to the best receiving position by the rotating structure characteristics, and use the wireless The transmission technology separates the receiving unit and the transmitting unit to make the communication method barrier-free, and effectively prevents noise caused by mutual interference, making the communication quality more perfect.

Another Chinese mainland patent No. 01234807.4 is a wireless earphone structure shared by the left and right ears. The wireless earphone structure shared by the left and right ears can be worn on the left ear or the right ear according to the user's habit and comfort.

Therefore, according to the above-mentioned known utility model, combined with the device of the present utility model to be cross-used, in addition to greatly improving the function of the hands-free handset, the wireless transmission technology is also used to transmit the receiving and speaking devices wirelessly. way to realize it.

In view of improving the performance of the above-mentioned known devices, the inventor of the present utility model is eager to improve and innovate, and after many years of painstaking research, he finally successfully developed the modularized improved structure of the hands-free handset for this vehicle.

technical content

The purpose of the utility model is to provide an improved modular structure of a hands-free handset for a vehicle, which can be used with foldable mobile phones of different brands or models only by replacing the buckling piece and the support module.

Another purpose of the present utility model is to provide a modular improved structure of a hands-free handset for a vehicle, which can be installed in a general hands-free handset, thereby improving the function of the hands-free handset, and transmitting the sound signal from the radio or FM receiver. The horn is sent out.

Another object of the present invention is to provide a modular improved structure of a hands-free handset for vehicles, which can directly transmit FM audio signals to radios or FM receivers in a low-power mode (less than 1 mW).

The modular improved structure of the hands-free handset for vehicles that can achieve the above-mentioned purpose of the utility model is to modularize the hands-free handset, which at least includes: a support part for supporting various foldable mobile phones; A buckle for fixing various foldable mobile phones; the front cover is provided with a perforation for the buckle to be placed on its top, and the front cover is provided with a placement seat, and the placement seat is provided with a The perforation of the supporting part; the back cover is provided with a volume adjustment button and a plug for receiving the sound signal of the mobile phone; a circuit board is accommodated between the front cover and the back cover.

With the help of the utility model, it can be used with folding mobile phones of different brands or models, and it can be achieved only by replacing the buckle and the supporting part; and the circuit board of the utility model is provided with an FM audio signal module and a charging control Switch, wherein the FM audio signal module includes: a signal amplifying circuit, an FM modulation module, a filter and a transmitting antenna; when the hands-free handset receives the sound signal of the mobile phone, it is sent to the utility model, and the utility model The received sound signal will be amplified by the signal amplifier first, then converted into an FM audio signal by the FM modulation module, and finally the unnecessary noise will be removed by the filter, and the signal will be converted to low power by the antenna ( Less than 1mW) transmits the FM audio signal to the radio or FM receiver, and sends out the sound through the speaker of the radio or FM receiver.

The modular improved structure of the hands-free handset for vehicles provided by the utility model has the following advantages when compared with the aforementioned cited cases and other known technologies:

1. The utility model provides an improved modular structure of a hands-free handset for a vehicle, which can be used with folding mobile phones of different brands or models only by replacing the buckle and the module of the supporting part.

2. The utility model provides a modular improved structure of a hands-free handset for vehicles, and the circuit for converting sound signals into FM signals is modularized.

3. The utility model provides a modular improved structure of a hands-free handset for vehicles, which can be installed in a general hands-free handset, thereby improving the function of the hands-free handset, and sending the sound signal from the speaker of a radio or FM receiver .

4. The utility model provides a modular and improved structure of a hands-free handset for vehicles, which transmits FM audio signals directly to radios or FM receivers in a low-power mode (less than 1mW).

Please refer to the following detailed description of a preferred embodiment of the utility model and the accompanying drawings, so as to further understand the technical content of the utility model and its purpose and effect.

Description of drawings

Fig. 1 is the circuit block diagram of the FM audio transmission module of the modularized improved structure of the hands-free handset of the utility model;

Fig. 2 is a circuit schematic diagram of the FM audio transmission module and the charging control switch applied to the hands-free handset;

Fig. 3 (A), (B) is the embodiment diagram of the modularized improved structure of this hands-free handset;

Fig. 4 is a diagram of an application embodiment diagram of the modular improved structure of the hands-free handset for the vehicle and other wireless transmission devices;

Fig. 5 (A) is the exploded view of the modularized improved structure of the hands-free handset for vehicles of the present invention;

Fig. 5(B) is a combined diagram of the modularized improved structure of the vehicle hands-free handset of the present invention.

【Description of figure number】

1 FM audio transmission module; 11 a signal amplifier circuit; 12 FM modulation module;

13 filters; 14 transmitting antennas; 2 hands-free handsets;

21 signal amplifier; 22 half/full duplex switcher; 23 audio amplifier;

24 speakers; 25 volume adjustment buttons; 26 circuit boards;

27 charging circuit; 28 charging control switch; 51 front cover;

511 placement seat; 52 back cover; 53 buckle piece;

54 supporting part.

Specific implementation

Please refer to shown in Fig. 1, the modularized improved structure of hands-free handset provided by the utility model, wherein the FM audio transmission module (1) mainly includes: a signal amplifying circuit (11), an FM modulation module (12), a filter (13) and a transmitting antenna (14); when the hands-free handset receives the sound signal of the mobile phone, it is sent to the utility model, and the received sound signal of the utility model will be firstly transmitted by the signal amplification circuit ( 11) The signal is amplified, and then converted into an FM audio signal by the FM modulation module (12), and finally the unnecessary noise is removed through the filter 13, and the transmitting antenna (14) is used in a low-power manner (less than 1mW) to transmit the FM audio signal directly to the radio or FM receiver, and send out the sound through the speaker of the radio or FM receiver.

Please refer to Fig. 2, Fig. 3 (A), Fig. 3 (B) and shown in Fig. 4, for applying the utility model to the block schematic diagram and embodiment figure of hands-free handset, general hands-free handset (2) can receive The microphone signal and audio signal of the mobile phone, after the hands-free handset (2) receives the microphone signal, the signal will be amplified by the signal amplifier (21), and the amplified signal and audio signal will all be input into the half/full duplex switcher (22 ) to be processed, and the processed signal is sent to the audio amplifier (23) for amplification, and then the sound is sent out by the loudspeaker (24), and the volume sent is controlled by the volume adjustment button (25); when adding the utility model After the FM audio transmission module (1) of the hands-free handset of wireless transmission, the signal processed by the half/full duplex switch (22) will also pass through the FM audio transmission module (1) of the present utility model. The new type converts the signal into an FM audio signal and sends it out, and then the sound is output by the radio on the car or the loudspeaker of the FM receiver; and it can be controlled by the charging control switch (28) whether the power supply of the charging circuit (27) is sent to The mobile phone is charged; the charging control switch (28) is provided with an LED, and the color of the LED on the charging control switch can be used to know whether the hands-free handset is in a charging state. When the FM audio transmission module (1) of the present utility model is applied to the hands-free receiver, the user can select the sound according to the needs of the user, and the sound is sent by the hands-free receiver or the radio on the car or by the wireless earphone. In addition, the utility model has a modular structure, and the hands-free hands-free FM audio transmission module (1) of the utility model can be separately arranged in the hands-free hands-free receiver, which can improve the function of the original hands-free hands-free receiver; On the circuit board (26) in the original hands-free handset, reserve a space to put the FM audio transmission module (1), and it can be selected whether to use the hands-free wireless transmission of the present utility model according to the user's needs during production. The handset FM audio transmission module (1) is arranged on the circuit board (26) in the hands-free handset to increase the function of FM audio transmission.

Please refer to Fig. 5 (A) and shown in Fig. 5 (B), it is the exploded view and the combination diagram of the modular improvement structure of the hands-free handset of the present utility model, and it comprises a front cover (51), a back cover (52), a circuit board (26), a buckle piece (53) and a support portion (54), the top of the front cover (51) is provided with a perforation for placing the buckle piece (53), and the bottom The placement seat (511) is provided with a perforated support portion (54), and a conductor (55) that can charge the mobile phone is provided on the support portion (54) or the buckle sheet (53). The charging control switch (28) provided in the placement seat (511) controls whether the charging power is imported into the mobile phone, and the back cover (52) is provided with a sound plug ( 56), the sound plug (56) is extended by a suitable place in the middle of the back cover, and can be plugged into the audio socket at any position on the side of the mobile phone; by means of the front cover (51) and the back cover (52) The circuit board (26) is accommodated in the hands-free receiver, and the buckle sheet (53), the support portion (54), the volume adjustment button (28) and the sound plug (56) are fixed; The replacement of the sheet (53) or the support portion (54) makes the utility model applicable to any foldable mobile phone.

The above detailed description is a specific description of a feasible embodiment of the utility model, but this embodiment is not used to limit the patent scope of the utility model, any equivalent implementation or change that does not depart from the technical spirit of the utility model, should be included in the patent scope of this case.

Claims (3)

1. A modular improved structure of a hands-free handset for a vehicle, characterized in that the improved modular structure of the hands-free handset for a vehicle comprises: Supporting parts for supporting various foldable mobile phones; Cooperate with the supporting part to fix various folding mobile phones; The front cover is provided with a perforation for the fastening piece to be placed on its top, and the front cover is provided with a placement seat, and the placement seat is provided with a perforation for placing the support part; The back cover is provided with a volume adjustment button and a plug for receiving the sound signal of the mobile phone; The circuit board is accommodated between the front cover and the rear cover. 2. The modular improved structure of the hands-free handset for vehicles as claimed in claim 1, wherein the circuit board can be provided with an FM audio transmission module that converts the sound signal in the mobile phone into an FM audio signal for transmission, which includes have: A signal amplifying circuit is used for receiving an audio signal from an external mobile phone and amplifying the audio signal; An FM modulation module is used to modulate the signal of the signal amplifying circuit into an FM audio signal; A filter for removing unnecessary noise in the FM audio signal generated by the FM modulation module; The transmitting antenna is used to transmit the signal processed by the filter. 3. The modular improved structure of the hands-free handset for vehicles as claimed in claim 1, wherein the improved modular structure of the hands-free hands-free vehicle for vehicles is further provided with a charging state of the hands-free handset that can be known by the color of its LED The charging control switch.

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