CN213718151U - Sound box circuit board device and sound box - Google Patents
Sound box circuit board device and sound box Download PDFInfo
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- CN213718151U CN213718151U CN202022771644.4U CN202022771644U CN213718151U CN 213718151 U CN213718151 U CN 213718151U CN 202022771644 U CN202022771644 U CN 202022771644U CN 213718151 U CN213718151 U CN 213718151U
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Abstract
The utility model relates to an audio amplifier circuit board device and audio amplifier, an audio amplifier circuit board device includes the fixed plate, a plurality of through-holes have been seted up to the fixed plate, the bolt is worn to be equipped with by through-hole department, the fixed plate has a plurality of gag lever posts towards control circuit board's one end arch, the one end that the fixed plate was kept away from to the gag lever post supports tight control circuit board, the one end terminal surface that the gag lever post was kept away from to the fixed plate is fixed with a plurality of pressure sensor, when the bolt was fixed control circuit board and box, the bolt compresses tightly pressure sensor. This application has pressure detection circuit and sends the warning signal to the user through signal processing in order to remind the user when not hard up appears in the fixed department of control circuit board and box this moment, should carry out timely maintenance, the comparatively stable effect of electric connection between control circuit board and the speaker.
Description
Technical Field
The application relates to the technical field of sound equipment, in particular to a sound box circuit board device and a sound box.
Background
The sound box is a terminal of the whole sound system, has the function of converting audio electric energy into corresponding sound energy, is an extremely important component of the sound system, and is responsible for converting an electric signal into a sound signal for direct listening by ears of people.
The existing sound box comprises a closed sound box body, the closed sound box body comprises a closed box body, a loudspeaker and a control circuit board electrically connected with the loudspeaker, the loudspeaker and the control circuit board are fixed in the closed box body through bolts, the loudspeaker can completely isolate forward radiation sound waves and backward radiation sound waves of the loudspeaker, and the motion quality of the loudspeaker is improved.
To the above-mentioned correlation technique, the inventor thinks that there is the speaker during operation to produce the vibration and then make the box produce resonance, and long-time box vibration makes the bolt of fixed control circuit board and box appear not hard up easily, and the user if not maintain in time and easily make control circuit board take place the offset, and then leads to between it and the speaker electric connection unstable, the defect that the audio amplifier is easy to break down.
SUMMERY OF THE UTILITY MODEL
When becoming flexible in order to make the fixed department of control circuit board and box appear, the audio amplifier can the signals in order to remind the user to maintain in time for electric connection between control circuit board and the speaker is comparatively stable, and this application provides an audio amplifier circuit board device and audio amplifier.
In a first aspect, the present application provides a sound box circuit board device, which adopts the following technical scheme:
the utility model provides a sound box circuit board device, includes the fixed plate, a plurality of through-holes have been seted up to the fixed plate, through-hole department wears to be equipped with the bolt, the bolt be used for pass fixed plate and control circuit board in proper order and with the box threaded connection of audio amplifier, the fixed plate has a plurality of gag lever posts towards control circuit board's one end arch, the one end that the fixed plate was kept away from to the gag lever post supports tight control circuit board, the one end terminal surface that the gag lever post was kept away from to the fixed plate is fixed with a plurality of pressure sensor, and when the bolt was fixed with control circuit board and box, the bolt compressed tightly pressure sensor, and is a plurality of pressure sensor is coupled with.
Through adopting above-mentioned technical scheme, under the normal condition, the bolt passes through-hole and control circuit board and with the box threaded connection of audio amplifier, the gag lever post supports the surface that tightly the circuit board this moment makes the surface of circuit board, and the nut part of a plurality of bolts all produces pressure to a plurality of pressure sensor, and pressure sensor receives the extrusion of fixed plate and bolt and sends pressure detection signal this moment.
When any bolt appears becoming flexible in a plurality of bolts, the pressure that pressure sensor between this bolt and the fixed plate received weakens, and the pressure detection signal that pressure sensor sent diminishes and feeds back this signal variation to pressure detection circuit, and pressure detection circuit sends warning signal to the user after signal processing in order to remind the user that the fixed department of control circuit board and box appears becoming flexible this moment, should carry out timely maintenance, and electric connection between control circuit board and the speaker is comparatively stable.
The setting of gag lever post for the fixed plate is difficult for pressing the electronic components on the control circuit board.
Optionally, the pressure detection circuit includes:
the pressure comparison unit is coupled with the pressure sensors and is provided with a pressure threshold signal Vref1 so as to send out a pressure comparison signal when the pressure detection signal sent out by any pressure sensor is smaller than a threshold signal Vref 1;
the logic judgment unit is coupled with the pressure comparison unit and used for outputting a logic judgment signal when receiving the pressure comparison signal;
the switch unit is coupled with the logic judgment unit and sends out a switch signal when receiving the pressure comparison signal;
the reminding unit is coupled with the switch unit and used for sending a reminding signal to remind a user that the control circuit board of the sound box is loosened at the moment when the switch signal is received.
By adopting the technical scheme, when any pressure sensor is subjected to pressure reduction of the bolt, the bolt is proved to be loosened, the pressure comparison unit detects that the pressure detection signal is smaller than the threshold signal Vref1, the pressure comparison unit sends the pressure comparison signal to the logic judgment unit, the logic judgment unit receives the pressure comparison signal and sends the logic judgment signal to the switch unit, the switch unit sends the switch signal to the reminding unit, the reminding unit sends the reminding signal to remind a user of maintaining the loosened part in time, and the bolt is screwed to tightly support the pressure sensor again.
Optionally, the pressure sensors are provided with four pressure comparison units, each pressure comparison unit includes a first comparator N1, a second comparator N2, a third comparator N3 and a fourth comparator N4, first signal input ends of the first comparator N1, the second comparator N2, the third comparator N3 and the fourth comparator N4 are all coupled to the pressure sensor, second signal input ends of the first comparator N1, the second comparator N2, the third comparator N3 and the fourth comparator N4 are all connected to a threshold signal Vref1, and signal output ends of the first comparator N1, the second comparator N2, the third comparator N3 and the fourth comparator N4 are all coupled to the logic determination unit.
By adopting the technical scheme, the first signal input ends of the four comparators are respectively coupled to the four pressure sensors in a one-to-one correspondence manner, when the pressure detection signal sent by any pressure sensor is reduced, the coupled comparator compares the pressure detection signal received by the pressure sensor with the threshold signal Vref1 and outputs the pressure comparison signal to the logic judgment unit, so that when any bolt on the fixing plate is loosened, the pressure detection circuit sends a reminding signal, and the reminding effect of the pressure detection circuit is good.
Optionally, the logic determining unit includes a logic or gate, a first input terminal of the logic or gate is coupled to the signal output terminal of the first comparator N1 and the signal output terminal of the second comparator N2, a second input terminal of the logic or gate is coupled to the signal output terminal of the third comparator N3 and the signal output terminal of the fourth comparator N4, and a signal output terminal of the logic or gate is coupled to the switch unit.
By adopting the technical scheme, the first input end and the second input end of the logic or gate are coupled with the signal output ends of the four comparators, when any receiving end of the logic or gate receives the pressure comparison signal, the logic or gate sends out a logic judgment signal to the switch unit, and only when the first input end and the second input end of the logic or gate do not receive the pressure comparison signal, the logic or gate outputs a low level signal.
Optionally, the switching unit includes a transistor Q1, a base of the transistor Q1 is coupled to the signal output end of the logic and gate, an emitter of the transistor Q1 is coupled to the alarm unit and then grounded, and a collector of the transistor Q1 is coupled to the power voltage VCC.
By adopting the technical scheme, when the base electrode of the triode Q1 receives the logic signal, the triode Q1 is converted from low level to high level, the triode Q1 is conducted, and a switching signal is sent to the reminding unit; when the triode Q1 does not receive the logic judgment signal, the triode Q1 is not turned on, and the reminding unit does not receive the switch signal and does not send out a reminding signal, thereby realizing the control function of the reminding unit.
Optionally, the reminding unit includes a light emitting diode D1, the light emitting diode is configured to be mounted on an outer surface of the sound box, an anode of the light emitting diode is coupled to an emitter of the transistor Q1, and a cathode of the light emitting diode is grounded.
Through adopting above-mentioned technical scheme, when triode Q1 got to the electricity, emitting diode Q1 got to the electricity and sent light in order to indicate that the user has appeared not hard up condition in the fixed department of control circuit board and the box of audio amplifier this moment, and the user should in time screw not hard up bolt once more, and when the bolt was screwed, this bolt was pressed again and is established its and fixed plate between pressure sensor for emitting diode D1 stops to send light, realizes that the audio amplifier sends reminder signal to user's function.
Optionally, one end of the limiting rod, which is far away from the fixing plate, is located at the edge of the control circuit board.
Through adopting above-mentioned technical scheme, the gag lever post is located the setting of the edge of fixed plate for the effort of gag lever post to control circuit board is located control circuit board's edge, and the gag lever post is better to control circuit board's spacing effect.
In a second aspect, the present application provides a sound box, which adopts the following technical scheme:
a sound box is applied to the sound box circuit board device.
Through adopting above-mentioned technical scheme, the audio amplifier is through installing audio amplifier circuit board device, and when the fixed appearance of circuit board and box was not hard up in the audio amplifier, audio amplifier circuit board device can send reminding signal in order to remind the user in time to maintain the audio amplifier for control circuit board is difficult for appearing the offset because of resonance and leads to control circuit board and speaker electric connection unstable, and the audio amplifier is difficult for breaking down.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the pressure detection circuit sends a warning signal to a user after signal processing so as to remind the user that the control circuit board and the loudspeaker are stably electrically connected when the fixing position of the box body is loosened at the moment and the user needs to maintain in time;
2. the switch unit sends a switch signal to the reminding unit, the reminding unit sends a reminding signal to remind a user of maintaining the loosened part in time, and the bolt is screwed to tightly abut against the pressure sensor again;
3. the gag lever post is located the setting of the edge of fixed plate for the gag lever post is located control circuit board's edge to control circuit board's effort, and the gag lever post is better to control circuit board's spacing effect.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
fig. 2 is a circuit diagram of a pressure detecting circuit in the present embodiment;
fig. 3 is a schematic structural diagram of the sound box in the present embodiment.
Description of reference numerals: 1. a box body; 2. a speaker; 3. a fixing plate; 31. a limiting rod; 4. a pressure sensor; 5. a control circuit board; 6. a pressure comparison unit; 7. a logic judgment unit; 8. a switch unit; 9. and a reminding unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to fig. 1-3 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The audio amplifier includes box 1, speaker 2 and with 2 electric connection's of speaker control circuit board 5, speaker 2 and control circuit board 5 all pass through the bolt fastening in box 1.
The embodiment of the application discloses a sound box circuit board device, referring to fig. 1, the sound box circuit board device comprises a fixing plate 3, the fixing plate 3 is provided with four through holes, the four through holes are all positioned at the edge of the fixing plate 3, bolts are all arranged at the through holes in a penetrating manner, and the bolts sequentially penetrate through the fixing plate 3 and a control circuit board 5 and are in threaded connection with a box body 1; the fixed plate 3 has four gag lever posts 31 towards the one end arch of control circuit board 5, and the one end that fixed plate 3 was kept away from to gag lever post 31 supports tight control circuit board 5, and the one end that gag lever post 31 supported tight control circuit board 5 is located the edge of control circuit board 5.
The fixed plate 3 is kept away from the one end terminal surface of gag lever post 31 and is fixed with four foil gage formula pressure sensor 4, and when the bolt was fixed control circuit board 5 and box 1, the nut of bolt compressed tightly pressure sensor 4.
Referring to fig. 2, the four pressure sensors 4 are coupled with a same pressure detection circuit for sending a warning signal to a user that the bolt is loosened, and the pressure detection circuit includes a pressure comparison unit 6, a logic judgment unit 7, a switch unit 8 and a warning unit 9.
The pressure comparison unit 6 is coupled to the four pressure sensors 4 and is provided with a pressure threshold signal Vref1 to send out a pressure comparison signal when the pressure detection signal sent out by any one of the pressure sensors 4 is smaller than the threshold signal Vref 1; the pressure comparing unit 6 includes a first comparator N1, a second comparator N2, a third comparator N3 and a fourth comparator N4, wherein first signal input terminals of the first comparator N1, the second comparator N2, the third comparator N3 and the fourth comparator N4 are all inverting input terminals, the inverting input terminals are all coupled to the pressure sensor 4, second signal input terminals of the first comparator N1, the second comparator N2, the third comparator N3 and the fourth comparator N4 are all non-inverting input terminals, the non-inverting input terminals are connected to the threshold signal Vref1, and signal output terminals of the first comparator N1, the second comparator N2, the third comparator N3 and the fourth comparator N4 are all coupled to the logic determining unit 7.
A logic judgment unit 7 coupled to the pressure comparison unit 6 for outputting a logic judgment signal when receiving the pressure comparison signal; the logic determining unit 7 comprises a logic or gate, a first input terminal of the logic or gate is coupled to the signal output terminal of the first comparator N1 and the signal output terminal of the second comparator N2, a second input terminal of the logic or gate is coupled to the signal output terminal of the third comparator N3 and the signal output terminal of the fourth comparator N4, and a signal output terminal of the logic or gate is coupled to the switch unit 8.
The switch unit 8 is coupled to the logic determination unit 7 for sending out a switch signal when receiving the pressure comparison signal; the switch unit 8 includes a transistor Q1, a base of the transistor Q1 is coupled to the signal output terminal of the logic and gate, an emitter of the transistor Q1 is coupled to the alarm unit 9 and then grounded, and a collector of the transistor Q1 is coupled to the power voltage VCC.
The reminding unit 9 is coupled to the switch unit 8 and sends out a reminding signal when receiving the switch signal so as to remind a user that the control circuit board 5 of the sound box is loosened at the moment; the reminding unit 9 comprises a light emitting diode D1, the light emitting diode is used for being installed on the outer surface of the sound box, the anode of the light emitting diode is coupled to the emitter of the triode Q1, and the cathode of the light emitting diode is grounded.
The implementation principle of the sound box circuit board device in the embodiment of the application is as follows: under the normal condition, the bolt passes through-hole and control circuit board 5 and with 1 threaded connection of box, this moment gag lever post 31 supports the surface of tight circuit board and makes the surface of circuit board, the nut part of four bolts all produces pressure to a plurality of pressure sensor 4, four pressure sensor 4 receive the extrusion of fixed plate 3 and bolt and send pressure detection signal this moment, pressure detection signal this moment all is greater than threshold signal Vref1, consequently emitting diode D1 does not send bright warning.
When any one of the four bolts is loosened, the pressure applied to the pressure sensor 4 between the bolt and the fixing plate 3 is weakened, the pressure detection signal sent by the pressure sensor 4 is reduced, when the pressure detection signal is smaller than a threshold signal Vref1, a comparator coupled to the pressure sensor 4 sends a pressure comparison signal to a logic OR gate, the logic OR gate receives the pressure comparison signal and sends a logic judgment signal to a triode Q1, a triode Q1 receives the logic judgment signal and then is conducted and sends a switching signal, and at the moment, the light-emitting diode D1 is powered on and sends light; the user screws the loosened bolt again, so that the light emitting diode D1 stops emitting light after the bolt presses the pressure sensor 4 between the loosened bolt and the fixing plate 3 again.
The limiting rod 31 is arranged, so that the fixing plate 3 is not easy to press electronic components on the control circuit board 5.
The limiting rod 31 is arranged at the edge of the control circuit board 5, so that the limiting effect of the limiting rod 31 on the control circuit board 5 is better.
The embodiment of the application also discloses a sound box, and with reference to fig. 3, the sound box is applied to a sound box circuit board device.
The implementation principle of a sound box in the embodiment of the application is as follows: the audio amplifier is through installation audio amplifier circuit board device, and when circuit board and box 1's fixed appearance was not hard up in the audio amplifier, audio amplifier circuit board device can send reminding signal in order to remind the user in time to maintain the audio amplifier for control circuit board 5 is difficult for appearing the offset because of the resonance and leads to control circuit board 5 and 2 electric connection unstabilities of speaker, and the audio amplifier is difficult for breaking down.
The foregoing is a preferred embodiment of the present application and is not intended to limit the scope of the application in any way, and any features disclosed in this specification (including the abstract and drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Claims (8)
1. The utility model provides a baffle box circuit board device which characterized in that: including fixed plate (3), a plurality of through-holes have been seted up in fixed plate (3), through-hole department wears to be equipped with the bolt, and the bolt is used for passing fixed plate (3) and control circuit board (5) in proper order and with box (1) threaded connection of audio amplifier, fixed plate (3) are towards the one end arch of control circuit board (5) and have a plurality of gag lever posts (31), the one end that fixed plate (3) were kept away from in gag lever post (31) supports tight control circuit board (5), the one end terminal surface that gag lever post (31) were kept away from in fixed plate (3) is fixed with a plurality of pressure sensor (4), when the bolt was fixed with control circuit board (5) and box (1), the bolt compressed tightly pressure sensor (4), and is a plurality of pressure sensor (4) are coupled and are used for sending the pressure detection circuit that the not hard.
2. A sound box circuit board apparatus according to claim 1, wherein: the pressure detection circuit includes:
the pressure comparison unit (6) is coupled with the pressure sensors (4) and is provided with a pressure threshold signal Vref1 so as to send out a pressure comparison signal when the pressure detection signal sent out by any pressure sensor (4) is smaller than a threshold signal Vref 1;
a logic judgment unit (7) coupled to the pressure comparison unit (6) for outputting a logic judgment signal when receiving the pressure comparison signal;
the switch unit (8) is coupled with the logic judgment unit (7) and sends out a switch signal when receiving the pressure comparison signal;
and the reminding unit (9) is coupled with the switch unit (8) and is used for sending a reminding signal when receiving the switch signal so as to remind a user that the control circuit board (5) of the sound box is loosened at the moment.
3. A sound box circuit board apparatus according to claim 2, wherein: the pressure sensor (4) is provided with four pressure comparison units (6), each pressure comparison unit (6) comprises a first comparator N1, a second comparator N2, a third comparator N3 and a fourth comparator N4, first signal input ends of the first comparator N1, the second comparator N2, the third comparator N3 and the fourth comparator N4 are all coupled to the pressure sensor (4), second signal input ends of the first comparator N1, the second comparator N2, the third comparator N3 and the fourth comparator N4 are all connected to a threshold signal Vref1, and signal output ends of the first comparator N1, the second comparator N2, the third comparator N3 and the fourth comparator N4 are all coupled to a logic judgment unit (7).
4. A sound box circuit board apparatus according to claim 3, wherein: the logic judgment unit (7) comprises a logic OR gate, a first input end of the logic OR gate is simultaneously coupled with a signal output end of the first comparator N1 and a signal output end of the second comparator N2, a second input end of the logic OR gate is simultaneously coupled with a signal output end of the third comparator N3 and a signal output end of the fourth comparator N4, and a signal output end of the logic OR gate is coupled with the switch unit (8).
5. A loudspeaker box circuit board device according to claim 4, wherein: the switch unit (8) comprises a triode Q1, the base electrode of the triode Q1 is coupled to the signal output end of the logic AND gate, the emitting electrode of the triode Q1 is coupled to the ground after the reminding unit (9), and the collecting electrode of the triode Q1 is coupled to the power supply voltage VCC.
6. A sound box circuit board apparatus according to claim 5, wherein: the reminding unit (9) comprises a light-emitting diode D1, the light-emitting diode is used for being installed on the outer surface of the sound box, the anode of the light-emitting diode is coupled with the emitting electrode of the triode Q1, and the cathode of the light-emitting diode is grounded.
7. A sound box circuit board apparatus according to claim 1, wherein: one end, far away from the fixed plate (3), of the limiting rod (31) is located at the edge of the control circuit board (5).
8. A sound box is characterized in that: the loudspeaker box is applied to the loudspeaker box circuit board device as described in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022771644.4U CN213718151U (en) | 2020-11-25 | 2020-11-25 | Sound box circuit board device and sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022771644.4U CN213718151U (en) | 2020-11-25 | 2020-11-25 | Sound box circuit board device and sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213718151U true CN213718151U (en) | 2021-07-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022771644.4U Active CN213718151U (en) | 2020-11-25 | 2020-11-25 | Sound box circuit board device and sound box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213718151U (en) |
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2020
- 2020-11-25 CN CN202022771644.4U patent/CN213718151U/en active Active
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