CN201638565U - Radio tuner structure of vehicle-mounted DVD - Google Patents
Radio tuner structure of vehicle-mounted DVD Download PDFInfo
- Publication number
- CN201638565U CN201638565U CN2010201843399U CN201020184339U CN201638565U CN 201638565 U CN201638565 U CN 201638565U CN 2010201843399 U CN2010201843399 U CN 2010201843399U CN 201020184339 U CN201020184339 U CN 201020184339U CN 201638565 U CN201638565 U CN 201638565U
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- vehicle
- antenna terminal
- screening
- terminal
- high frequency
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Abstract
The utility model relates to the technical field of vehicle-mounted DVDs, in particular to a radio tuner structure of a vehicle-mounted DVD. The radio tuner structure of the vehicle-mounted DVD comprises a tuner circuit board, an antenna connector, a plug-in pin arranged on the tuner circuit board and a shielding case, wherein the tuner circuit board is arranged in the shielding case; the plug-in pin penetrates the shielding case and is exposed outside; and one end of the antenna connector is connected with the tuner circuit board, and the other end thereof is arranged outside the shielding case. The radio tuner structure of the vehicle-mounted DVD can effectively shield the signal interference of a main circuit board, and guarantee the radio quality.
Description
Technical field:
The utility model relates to the vehicle-carrying DVD technical field, relates in particular to the radio tuner structure of vehicle-carrying DVD.
Background technology:
Vehicle-carrying DVD is mounted in the multimedia play system that audio-visual amusement is provided for passenger in the car in the automobile, can support the audio/video file and the video disc of forms such as DVD, VCD, MP3, WMA, also be integrated with wireless function of radio receiver, and often be equipped with functions such as touch screen operation, GPS vehicle mounted guidance.
The function of radio receiver of vehicle-carrying DVD realizes that principle is: the radio signals that antenna receives is coupled to tuner, the FM signal that the tuner selection will receive, and with FM signal amplify, mixing, become the intermediate-freuqncy signal that carrier frequency is 10.7MHz, intermediate-freuqncy signal is transported to and is transferred to the main circuit board processing after intermediate frequency amplifier amplifies, play back by power amplifier at last, realize the function of radio receiver of vehicle-carrying DVD.The main circuit board of vehicle-carrying DVD is provided with tuner, and tuner connects antenna.
Existing vehicle-carrying DVD, its main circuit board is provided with tuner and the antenna terminal that is used to be connected antenna, tuner is connected with main circuit board by the inserted terminal pin, the signal output part of antenna terminal directly is connected with main circuit board, and the junction is again by being located at the inserted terminal pin of the copper sheet line connection tuner on the main circuit board then.This structure, signal transmission between its tuner and the antenna terminal is exposed, because vehicle-carrying DVD is the system that gathers multi-function in integral whole, the signal of its main circuit board disturbs more serious, as operate touch-screen, open car borne GPS navigation, or during the DVD decoding, transmission causes interference to the signal between tuner and the antenna terminal in the capital, has had a strong impact on the radio reception quality.
The utility model content:
The purpose of this utility model is at the deficiencies in the prior art, and a kind of radio tuner structure of vehicle-carrying DVD is provided, and the signal that can effectively shield main circuit board disturbs, and guarantees the radio reception quality.
For achieving the above object, the utility model is by the following technical solutions:
The radio tuner structure of vehicle-carrying DVD, it comprises the high frequency tuner circuit plate, antenna terminal, and the inserted terminal pin that is arranged at the high frequency tuner circuit plate, it also comprises screening can, and described high frequency tuner circuit plate is arranged at screening can inside, and inserted terminal is worn for the screening can outside, one end of antenna terminal is connected with the high frequency tuner circuit plate, and the other end of antenna terminal is arranged at the screening can outside.
One end of described antenna terminal is provided with terminal, and the other end of antenna terminal is provided with spliced eye; The end that antenna terminal is provided with terminal is connected with the high frequency tuner circuit plate by terminal; The other end that antenna terminal is provided with spliced eye is arranged at the screening can outside.
One end of described antenna terminal is provided with signal wire, and the other end of antenna terminal is provided with spliced eye; The end that antenna terminal is provided with signal wire is connected with the high frequency tuner circuit plate by signal wire; The other end that antenna terminal is provided with spliced eye is arranged at the screening can outside.
Described signal wire comprises heart yearn and shielding line, and shielding line is wound in the heart yearn outside.
Described screening can comprises fore shell and back cover, fore shell and back cover snapping.
Described screening can is provided with buckle in the position with inserted terminal pin homonymy.
The utility model has beneficial effect to be: the radio tuner structure of vehicle-carrying DVD described in the utility model, and it comprises the high frequency tuner circuit plate, antenna terminal is arranged at the inserted terminal pin of high frequency tuner circuit plate and screening can; The high frequency tuner circuit plate is arranged at screening can inside, and inserted terminal is worn for the screening can outside, and an end of antenna terminal is connected with the high frequency tuner circuit plate, and the other end of antenna terminal is arranged at the screening can outside.Adopt the radio tuner structure of above-mentioned vehicle-carrying DVD, because antenna terminal directly is connected with the high frequency tuner circuit plate, and at frequency head circuit board outer setting screening can, screening can plays the effect of the undesired signal of shielding main circuit board, transmission causes interference to the signal between high frequency tuner circuit plate and the antenna terminal thereby avoid main circuit board effectively, guarantees the radio reception quality.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the antenna terminal structural representation of the utility model embodiment one;
Fig. 3 is the structural representation of the utility model embodiment two.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described:
Embodiment one, as shown in Figure 1, the radio tuner structure of vehicle-carrying DVD, it comprises the high frequency tuner circuit plate, antenna terminal 2, and the inserted terminal pin 3 that is arranged at the high frequency tuner circuit plate, it also comprises screening can 1, and described high frequency tuner circuit plate is arranged at screening can 1 inside, and inserted terminal pin 3 is piercing in screening can 1 outside, one end of antenna terminal 2 is connected with the high frequency tuner circuit plate, and the other end of antenna terminal 2 is arranged at screening can 1 outside.Directly be connected with the signal output part of existing antenna terminal 2 with main circuit board, the junction connects the inserted terminal pin 3 of tuner different is by being located at copper sheet line on the main circuit board more then, the radio tuner structure of vehicle-carrying DVD described in the utility model, its antenna terminal 2 directly is connected with the high frequency tuner circuit plate, and at frequency head circuit board outer setting screening can 1, screening can 1 plays the effect of the undesired signal of shielding main circuit board, thereby transmission causes interference to the signal between high frequency tuner circuit plate and the antenna terminal 2 to avoid main circuit board effectively, for example operate touch-screen, open car borne GPS navigation, or DVD when decoding, can not transmit and not cause interference the signal between tuner and the antenna terminal 2.In addition, screening can 1 also can avoid main circuit board that the signal of high frequency tuner circuit plate is disturbed, and guarantees that the high frequency tuner circuit plate can carry out glitch-free signal Processing.Therefore, the radio tuner structure of vehicle-carrying DVD described in the utility model can guarantee that vehicle-carrying DVD has higher radio reception quality.
As preferred implementation, as shown in Figure 2, one end of described antenna terminal 2 is provided with terminal 21, the other end of antenna terminal 2 is provided with spliced eye 20, the end that antenna terminal 2 is provided with terminal 21 is connected with the high frequency tuner circuit plate by terminal 21, the other end that antenna terminal 2 is provided with spliced eye 20 is arranged at screening can 1 outside, have simple in structure, the advantage of being convenient to assemble.Antenna terminal 2 one ends that are arranged at screening can 1 outside directly are fixed on the radiating seat of vehicle-carrying DVD erecting frame, and antenna inserts in the spliced eye 20, and during work, the radio signals that antenna receives is coupled to the high frequency tuner circuit plate through antenna terminal 2.
As preferred implementation, screening can 1 comprises fore shell 11 and back cover 12, and fore shell 11 and back cover 12 snappings have simple in structurely, are convenient to assemble and dismantle the advantage of maintenance.Further, screening can 1 is provided with buckle 10 in the position with inserted terminal pin 3 homonymies, and when inserted terminal pin 3 was inserted main circuit boards, buckle 10 main circuit board that links closely played better the fixedly effect of tuner.
Embodiment two, as shown in Figure 3, be with the difference of embodiment one, one end of described antenna terminal 2 is provided with signal wire 22, the other end of antenna terminal 2 is provided with spliced eye 20, and the end that antenna terminal 2 is provided with signal wire 22 is connected with the high frequency tuner circuit plate by signal wire 22, and the other end that antenna terminal 2 is provided with spliced eye 20 is arranged at screening can 1 outside, this structure has simple in structure equally, the advantage of being convenient to assemble.Further, described signal wire 22 comprises heart yearn and shielding line, shielding line is wound in the heart yearn outside, because signal wire 22 part positions expose to main circuit board, therefore must take shielding measure, the shielding line of heart yearn outside then can shield the signal interference of main circuit board to signal wire 22 effectively, guarantees the radio reception quality better.
The above only is a better embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (6)
1. the radio tuner structure of vehicle-carrying DVD, it comprises the high frequency tuner circuit plate, antenna terminal (2), and the inserted terminal pin (3) that is arranged at the high frequency tuner circuit plate, it is characterized in that: it also comprises screening can (1), and described high frequency tuner circuit plate is arranged at screening can (1) inside, and inserted terminal pin (3) is piercing in screening can (1) outside, one end of antenna terminal (2) is connected with the high frequency tuner circuit plate, and the other end of antenna terminal (2) is arranged at screening can (1) outside.
2. the radio tuner structure of vehicle-carrying DVD according to claim 1, it is characterized in that: an end of described antenna terminal (2) is provided with terminal (21), and the other end of antenna terminal (2) is provided with spliced eye (20); The end that antenna terminal (2) is provided with terminal (21) is connected with the high frequency tuner circuit plate by terminal (21); The other end that antenna terminal (2) is provided with spliced eye (20) is arranged at screening can (1) outside.
3. the radio tuner structure of vehicle-carrying DVD according to claim 1, it is characterized in that: an end of described antenna terminal (2) is provided with signal wire (22), and the other end of antenna terminal (2) is provided with spliced eye (20); The end that antenna terminal (2) is provided with signal wire (22) is connected with the high frequency tuner circuit plate by signal wire (22); The other end that antenna terminal (2) is provided with spliced eye (20) is arranged at screening can (1) outside.
4. the radio tuner structure of vehicle-carrying DVD according to claim 3, it is characterized in that: described signal wire (22) comprises heart yearn and shielding line, and shielding line is wound in the heart yearn outside.
5. according to the radio tuner structure of each described vehicle-carrying DVD of claim 1 to 4, it is characterized in that: described screening can (1) comprises fore shell (11) and back cover (12), fore shell (11) and back cover (12) snapping.
6. according to the radio tuner structure of each described vehicle-carrying DVD of claim 1 to 4, it is characterized in that: described screening can (1) is provided with buckle (10) in the position with inserted terminal pin (3) homonymy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201843399U CN201638565U (en) | 2010-05-10 | 2010-05-10 | Radio tuner structure of vehicle-mounted DVD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201843399U CN201638565U (en) | 2010-05-10 | 2010-05-10 | Radio tuner structure of vehicle-mounted DVD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201638565U true CN201638565U (en) | 2010-11-17 |
Family
ID=43083070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201843399U Expired - Fee Related CN201638565U (en) | 2010-05-10 | 2010-05-10 | Radio tuner structure of vehicle-mounted DVD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201638565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093793A (en) * | 2013-01-05 | 2013-05-08 | 广东好帮手电子科技股份有限公司 | Vehicle-mounted digital video disk (DVD) and method of achieving motor vehicle double antenna reception |
-
2010
- 2010-05-10 CN CN2010201843399U patent/CN201638565U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093793A (en) * | 2013-01-05 | 2013-05-08 | 广东好帮手电子科技股份有限公司 | Vehicle-mounted digital video disk (DVD) and method of achieving motor vehicle double antenna reception |
| CN103093793B (en) * | 2013-01-05 | 2016-06-22 | 广东好帮手电子科技股份有限公司 | A kind of vehicle-carrying DVD and the method realizing automobile double antenna radio reception |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20110510 |