CN213343222U - Power amplifier with noise reduction function - Google Patents
Power amplifier with noise reduction function Download PDFInfo
- Publication number
- CN213343222U CN213343222U CN202022658133.1U CN202022658133U CN213343222U CN 213343222 U CN213343222 U CN 213343222U CN 202022658133 U CN202022658133 U CN 202022658133U CN 213343222 U CN213343222 U CN 213343222U
- Authority
- CN
- China
- Prior art keywords
- power amplifier
- noise reduction
- circuit board
- wall
- reduction function
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Amplifiers (AREA)
Abstract
The utility model relates to a power amplifier technical field, and a power amplifier with noise reduction function is disclosed, including the power amplifier, the power amplifier includes the casing, apron and circuit board, the circuit board is located casing internal surface bottom, the lateral wall of apron is connected with the inside wall upper end contact of casing, and the fixed shield cover that is equipped with in bottom, the shield cover parcel sets up in the outside of circuit board, the internal surface bottom of casing and the both sides that are located the circuit board are all fixed and are equipped with the bar shaped plate, the bar shaped groove has been seted up at the top of bar shaped plate, the lateral wall bottom of shield cover is connected with the cell wall contact in bar shaped groove, the bottom of casing is seted up flutedly, the inside stop gear that is equipped with of recess, the bottom both ends of apron are. The utility model discloses can carry out quick dismouting to being used for shielding magnetic field and noise reduction's shield cover, prevent simultaneously that the dust from flowing into the power amplifier and causing the influence to the internals.
Description
Technical Field
The utility model relates to a power amplifier technical field especially relates to a power amplifier with noise reduction function.
Background
The power amplifier is called power amplifier for short, and refers to an amplifier capable of generating maximum power output to drive a certain load under the condition of a given distortion rate.
The inside circuit board can receive external magnetic field interference when using current power amplifier to lead to the power amplifier can produce great noise when using, current shield cover that often adopts shields magnetic field, thereby noise abatement's production, but driven shield cover and power amplifier internally mounted are too loaded down with trivial details, can not carry out quick demolising when examining the power amplifier inside.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that is used for carrying out the installation too complicated between shield cover and the amplifirer that the noise reduces to amplifirer inside among the prior art, is not convenient for demolish, and the power amplifier who provides a noise reduction function.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a power amplifier with noise reduction function, includes the power amplifier, the power amplifier includes casing, apron and circuit board, the circuit board is located casing internal surface bottom, the lateral wall of apron and the inside wall upper end contact connection of casing, and the fixed shield cover that is equipped with in bottom, the shield cover parcel sets up in the outside of circuit board, the internal surface bottom of casing and the both sides that are located the circuit board are all fixed and are equipped with the bar shaped plate, the bar shaped groove has been seted up at the top of bar shaped plate, the lateral wall bottom in shield cover and the cell wall contact connection in bar shaped groove, the bottom of casing is seted up flutedly, the inside stop gear that is equipped with of recess, the bottom both ends of apron are all fixed and are equipped with the fixed block, two the inside through-hole that has all been seted.
Preferably, transmission grafting mechanism includes two-way lead screw, the bottom both ends of two-way lead screw are all rotated through rolling bearing and casing and are connected, the equal threaded connection in pole wall both ends of two-way lead screw has the slider, two one side that the slider was kept away from mutually all fixes two connecting rods that are equipped with the symmetry, two the other end of connecting rod passes the casing and fixes being equipped with the riser, two the riser upper end is close to one side and all fixes being equipped with the inserted bar, the other end of inserted bar passes the casing and is connected with the pore wall contact of through-hole, the pole wall intermediate position of two-way lead screw is fixed to be cup jointed the turning block, the slot has been seted up at the top of turning.
Preferably, stop gear includes spring and inserted block, the spring is fixed connection with the internal surface top of recess, and the other end is fixed and is equipped with the pressure board, the inserted block is connected with the bottom fixed connection of pressing the board, the lower extreme of inserted block and the cell wall contact of slot are connected.
Preferably, the two sides of the shell are provided with placing grooves, and the groove walls of the two placing grooves are provided with heat dissipation holes.
Preferably, two the vertical plates are all fixedly provided with a filter screen close to one side, and the other side of the filter screen is in contact connection with the groove wall of the placing groove.
Preferably, the shielding case is made of a ferrous material.
Compared with the prior art, the utility model provides a power amplifier with noise reduction function possesses following beneficial effect:
1. this power amplifier with noise reduction function, apron, fixed block, bar shaped plate and the transmission grafting mechanism through being equipped with can carry out quick convenient connection installation to the shield cover, the subsequent demolising of being convenient for simultaneously.
2. This power amplifier with noise reduction function, through turning block and stop gear who is equipped with, the rotation that can the turning block carries on spacingly, prevents that the turning block from receiving unexpected rotation and leading to the shield installation unstable.
3. This power amplifier with noise reduction function, through louvre and the filter screen that is equipped with, filters the inside exchange air current of outside inflow power amplifier, prevents that the dust from carrying out the inside influence to the internals that causes of power amplifier to effective noise reduction's production.
The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses simple structure can carry out quick dismouting to the shield cover that is used for shielding magnetic field and noise reduction, prevents simultaneously that the dust from flowing into the power amplifier and causing the influence to the internals to produced noise when the power amplifier uses.
Drawings
Fig. 1 is a schematic structural diagram of a power amplifier with noise reduction function according to the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1.
In the figure: the device comprises a shell 1, a cover plate 2, a shielding cover 3, a strip-shaped plate 4, a fixed block 5, a bidirectional screw rod 6, a sliding block 7, a connecting rod 8, a vertical plate 9, an inserted rod 10, a rotating block 11, a spring 12, an inserted block 13, a pressing plate 14 and a filter screen 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-2, a power amplifier with noise reduction function comprises a power amplifier, the power amplifier comprises a housing 1, a cover plate 2 and a circuit board, the circuit board is located at the bottom of the inner surface of the housing 1, the side wall of the cover plate 2 is in contact connection with the upper end of the inner side wall of the housing 1, a shielding cover 3 is fixedly arranged at the bottom, the shielding cover 3 is wrapped and arranged at the outer side of the circuit board, strip-shaped plates 4 are fixedly arranged at the bottom of the inner surface of the shell 1 and positioned at the two sides of the circuit board, strip-shaped grooves are arranged at the tops of the strip-shaped plates 4, be convenient for carry on first spacingly to shield cover 3 through setting up the bar groove, shield cover 3's lateral wall bottom and the cell wall contact in bar groove are connected, and casing 1's bottom is seted up flutedly, and the recess is inside to be equipped with stop gear, and apron 2's bottom both ends are all fixed and are equipped with fixed block 5, and the through-hole has all been seted up to two fixed block 5 insides, and casing 1's bottom is equipped with transmission grafting mechanism.
The transmission grafting mechanism includes two-way lead screw 6, two-way lead screw 6's both ends are all rotated through rolling bearing and casing 1's bottom both ends and are connected, the equal threaded connection in pole wall both ends of two-way lead screw 6 has slider 7, two slider 7 one side of keeping away from mutually all fix two connecting rods 8 that are equipped with the symmetry, the other end of two connecting rods 8 passes casing 1 and fixed riser 9 that is equipped with, it is spacing to carry out the removal of slider 7 through connecting rod 8, two riser 9 upper ends are close to one side mutually and all fix and are equipped with inserted bar 10, the other end of inserted bar 10 pass casing 1 and with the pore wall contact connection of through-hole, the fixed rotor 11 that has cup jointed in pole wall intermediate position of two-way lead screw 6, the slot.
Stop gear includes spring 12 and inserted block 13, spring 12 and the internal surface top fixed connection of recess, and the other end is fixed to be equipped with and presses the pressure board 14, inserted block 13 and the bottom fixed connection who presses the pressure board 14, and the lower extreme of inserted block 13 is connected with the cell wall contact of slot, and is spacing to the position of turning block 11 through the grafting of inserted block 13 and slot.
The standing groove has all been seted up to casing 1's both sides, the louvre has all been seted up to the cell wall of two standing grooves, two risers 9 are close to one side mutually and all fix and are equipped with filter screen 15, the opposite side of two filter screens 15 all is connected with the cell wall contact of standing groove, it prevents that the dust in the outside air from flowing to the power amplifier inside and causing the influence to the power amplifier internals to set up filter screen 15, thereby the effectual noise that prevents that the power amplifier internals from moving unstably and producing, shield cover 3 adopts the iron material to make, adopt the iron material can effectually shield magnetic field, thereby prevent that magnetic field from influencing power amplifier internals circuit board, can effectually reduce the noise.
In the utility model, when the shielding case 3 is installed for noise reduction of the power amplifier, firstly the cover plate 2 drives the shielding case 3 to move downwards from the top of the shell 1, so that the bottom of the shielding case 3 is clamped with the strip-shaped grooves at the tops of the two strip-shaped plates 4, preliminary position determination is carried out on the shielding case 3, then the pressing plate 14 is pressed upwards, the inserting block 13 is separated from the inserting groove at the top of the rotating block 11, the rotating block 11 starts to rotate, the rotating block 11 rotates to drive the bidirectional screw rod 6 to rotate, two sliders 7 on the rod wall of the bidirectional screw rod 6 are close to each other when the bidirectional screw rod 6 rotates, the vertical plate 9 is pulled through the connecting rod 8 when the sliders 7 move, the vertical plate 9 drives the inserting rod 10 to pass through the upper end of the shell 1 to be inserted into the through hole inside the fixed block 5, thereby the cover plate 2 and the shielding case 3 are limited when the fixed block, and finally, the pressing plate 14 is loosened, so that the spring 12 is elastically restored to drive the inserting block 13 at the bottom of the pressing plate 14 to be inserted into the inserting groove at the top of the rotating block 11, the position of the rotating block 11 is limited, the shielding cover 3 is installed, the air entering the shell 1 is filtered through the filter screens 15 on the two sides of the shell 1, and the dust is prevented from influencing the circuit board and generating noise in the shell 1.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The power amplifier with the noise reduction function comprises a power amplifier and is characterized in that the power amplifier comprises a shell (1), an apron (2) and a circuit board, wherein the circuit board is positioned at the bottom of the inner surface of the shell (1), the side wall of the apron (2) is in contact connection with the upper end of the inner side wall of the shell (1), the bottom of the side wall of the apron is fixedly provided with a shielding cover (3), the shielding cover (3) is wrapped and arranged at the outer side of the circuit board, strip-shaped plates (4) are fixedly arranged at the bottom of the inner surface of the shell (1) and positioned at two sides of the circuit board, a strip-shaped groove is formed in the top of each strip-shaped plate (4), the bottom of the side wall of each shielding cover (3) is in contact connection with the groove wall of each strip-shaped groove, a groove is formed in the bottom of the shell (1), a, two through holes are formed in the fixing blocks (5), and a transmission inserting mechanism is arranged at the bottom of the shell (1).
2. The power amplifier with the noise reduction function according to claim 1, wherein the transmission plugging mechanism comprises a bidirectional screw rod (6), two ends of the bidirectional screw rod (6) are rotatably connected with two ends of the bottom of the housing (1) through rotating bearings, two ends of a rod wall of the bidirectional screw rod (6) are respectively in threaded connection with a sliding block (7), two symmetrical connecting rods (8) are fixedly arranged on one sides of the two sliding blocks (7) far away from each other, the other ends of the two connecting rods (8) penetrate through the housing (1) and are fixedly provided with vertical plates (9), plugging rods (10) are fixedly arranged on one sides of the two vertical plates (9) close to each other, the other ends of the plugging rods (10) penetrate through the housing (1) and are in contact connection with a hole wall of a through hole, a rotating block (11) is fixedly sleeved at the middle position of the rod wall of the bidirectional screw rod (6), the top of the rotating block (11) is provided with a slot.
3. The power amplifier with the noise reduction function according to claim 1, wherein the limiting mechanism comprises a spring (12) and an insert block (13), the spring (12) is fixedly connected with the top of the inner surface of the groove, the other end of the spring is fixedly provided with a pressing plate (14), the insert block (13) is fixedly connected with the bottom of the pressing plate (14), and the lower end of the insert block (13) is in contact connection with the wall of the slot.
4. The power amplifier with noise reduction function according to claim 1, wherein both sides of the housing (1) are provided with placing slots, and the walls of both the placing slots are provided with heat dissipation holes.
5. The power amplifier with noise reduction function according to claim 2, wherein the two vertical plates (9) are fixedly provided with a filtering net (15) at one side close to each other, and the other sides of the two filtering nets (15) are in contact connection with the wall of the placing groove.
6. A power amplifier with noise reduction according to claim 1, wherein the shielding case (3) is made of a ferrous material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022658133.1U CN213343222U (en) | 2020-11-17 | 2020-11-17 | Power amplifier with noise reduction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022658133.1U CN213343222U (en) | 2020-11-17 | 2020-11-17 | Power amplifier with noise reduction function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213343222U true CN213343222U (en) | 2021-06-01 |
Family
ID=76077290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022658133.1U Active CN213343222U (en) | 2020-11-17 | 2020-11-17 | Power amplifier with noise reduction function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213343222U (en) |
-
2020
- 2020-11-17 CN CN202022658133.1U patent/CN213343222U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207995551U (en) | A kind of water proof and dust proof electrical cabinet | |
| CN212085604U (en) | Power distribution cabinet with moisture-proof function | |
| CN213343222U (en) | Power amplifier with noise reduction function | |
| CN111093352A (en) | Cabinet body for mounting filter | |
| CN218888271U (en) | Motor with air inlet and dust filtration functions | |
| CN208849957U (en) | A kind of pull rod speaker convenient for heat dissipation | |
| CN214253082U (en) | Case with dustproof structure for intelligent analysis of central air conditioning system | |
| CN214106220U (en) | Dust collector for machining center | |
| CN213448973U (en) | Steel construction building wall body environmental protection economizer | |
| CN115296185A (en) | IP65 protection level's energy-efficient cooling electrical control cabinet | |
| CN211557825U (en) | Cabinet body for mounting filter | |
| CN208742196U (en) | A kind of weldering cigarette clearing machine with clear dirt prompting function | |
| CN208190079U (en) | A kind of communication engineering battery saving arrangement | |
| CN218337014U (en) | Assembled electromagnetic shielding room with purifying effect | |
| CN213509005U (en) | Mute composite impedance type emptying device | |
| CN218047034U (en) | Filter that high-efficient particulate matter was got rid of | |
| CN216772346U (en) | Integrated case with dustproof function | |
| CN219432813U (en) | Safety monitoring device for laboratory | |
| CN220758272U (en) | Slurry stepped filter screen sieving device | |
| CN219050736U (en) | High-efficiency filter | |
| CN219499839U (en) | Mobile power supply capable of supplying power after being connected in series | |
| CN209887393U (en) | Grinding machine filters device of grinding oil | |
| CN213094608U (en) | Control instrument based on automatic driving | |
| CN209265425U (en) | A kind of hardware interface plate | |
| CN216734603U (en) | Energy storage power supply based on shared electric bicycle battery replacement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |