Power amplifier with shielding structure

Abstract

The utility model belongs to the technical field of power amplifiers, and particularly relates to a power amplifier with a shielding structure, which comprises a shell, a filter screen, a fan, an amplifier body and a replacement mechanism, a top plate is hinged on a top groove of the shell, the filter screen and the fan are arranged on a through groove of the shell, and the amplifier body is arranged in the through groove of the shell. The mounting groove is formed in the top of a through groove of the shell, a sealing plate is mounted on the mounting groove, the unlocking plate is mounted in the shell through the spring, a protrusion is arranged on the unlocking plate, and the fixing protrusion is mounted on the top of the unlocking plate. A groove matched with the fixed bulge is formed in the side wall of the filter screen; by arranging the replacement mechanism, when a user disassembles an old filter screen, external air with impurities is prevented from directly entering the device, and by arranging a protrusion with the width larger than that of a fixed protrusion on an unlocking plate, it is guaranteed that the user cannot be hindered in the filter screen replacement process.

Description

Technical Field

[0001] The utility model belongs to the technical field of power amplifiers, and in particular relates to a power amplifier with a shielding structure. Background Art

[0002] A power amplifier, abbreviated as PA, refers to an amplifier that can generate maximum power output to drive a certain load under given distortion conditions. The power amplifier plays a pivotal role of "organization and coordination" in the entire audio system. The power amplifier will dissipate heat during use. Dust and other debris will accumulate on the surface of the filter during the heat dissipation process, which affects the heat dissipation effect of the device. Existing power amplifiers improve the efficiency of users cleaning and replacing filters by setting removable filters. However, during the process of users replacing filters, the slot for installing the filter in the device loses its closure. At this time, outside air can directly enter the device through the installation slot, causing external impurities to enter the device along with the air, affecting the heat dissipation effect of the device. Utility Model Content

[0003] The utility model provides a power amplifier with a shielding structure to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a power amplifier with a shielding structure, comprising a shell, a filter, a fan and an amplifier body, and also comprising a replacement mechanism, a top plate is hinged on the top groove of the shell, a matching fixing frame is installed on the side walls of the shell and the top plate, a fixing pin is installed on the fixing frame installed on the shell, a rubber pad is provided on the side wall of the top plate, the amplifier body is installed inside the shell, a shielding layer is installed on the inner wall of the shell, through grooves are provided on the side walls of both sides of the shell, the filter and the fan are installed on the through grooves of the shell, and the replacement mechanism is provided on the through grooves of the shell;

[0005] The replacement mechanism includes a mounting groove, an unlocking plate, a fixing protrusion, a guide rod and a spring; the mounting groove is provided at the top of the through groove of the shell, a sealing plate is installed on the mounting groove, and the sealing plate is fixed to the mounting groove by the cooperation of the fixing frame and the fixing pin; the unlocking plate is installed inside the shell through the spring; the unlocking plate is provided with a protrusion which passes through the side wall of the through groove of the shell at a position below the mounting groove; the fixing protrusion which passes through the side wall of the through groove of the shell is installed on the top of the unlocking plate; the side wall of the filter is provided with a groove which cooperates with the fixing protrusion.

[0006] Preferably, the width of the top surface protrusion of the unlocking plate is greater than the width of the fixing protrusion.

[0007] Preferably, the top surface protrusion of the unlocking plate is disposed at a position in the middle of the unlocking plate.

[0008] Preferably, a plurality of guide rods penetrating the unlocking plate are installed on the side walls of the groove of the housing in which the unlocking plate is installed, and grooves cooperating with the guide rods are provided inside the top protrusion of the unlocking plate and the fixed protrusion.

[0009] Preferably, the filter screen includes guide grooves, a handle, a sealing layer and a placement groove, a plurality of guide grooves are provided on the top of the filter screen, a protrusion cooperating with the guide groove is provided on the side wall of the groove for mounting the filter screen on the outer shell, the placement groove is provided on the side wall of the filter screen, the handle is hinged on the placement groove, and the sealing layer is installed on the side wall of the filter screen.

[0010] Preferably, the upper and lower side walls of the bottom portion of the placement groove are in the shape of an arc surface.

[0011] Preferably, the wind directions of the fans installed on the two through slots of the outer shell are opposite, and two fans are installed on one through slot of the outer shell.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides a replacement mechanism, and when a user removes an old filter, a new filter is installed on the through groove of the shell, so as to prevent outside air from directly entering the inside of the device with impurities. By providing a protrusion with a width greater than the fixing protrusion on the unlocking plate, it is ensured that the user will not be hindered in the process of replacing the filter. The top surface protrusion of the unlocking plate is located in the middle of the unlocking plate, which ensures the stability of the unlocking plate when moving and ensures that the user can smoothly release the fixing of the fixing protrusion to the old filter. By providing a breathable shielding layer, the heat dissipation effect of the device is guaranteed. By providing two groups of fans with opposite wind directions, the heat dissipation efficiency of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of a top view and cross-section structure of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the unlocking mechanism in the utility model;

[0018] Figure 5 for Figure 4 Schematic diagram of the structure at A in the middle.

[0019] In the figure: 1, outer shell 11, top plate 12, shielding layer 13, fixing frame 14, fixing pin 15, sealing plate 2, filter screen 21, guide groove 22, handle 23, sealing layer 24, placement groove 3, fan 4, amplifier body 5, replacement mechanism 51, installation groove 52, unlocking plate 53, fixing protrusion 54, guide rod 55, spring. DETAILED DESCRIPTION

[0020] See also Figure 1-5 The utility model provides the following technical solutions: a power amplifier with a shielding structure, comprising a housing 1, a filter 2, a fan 3 and an amplifier body 4, and also comprising a replacement mechanism 5, a top plate 11 is hinged on the top groove of the housing 1, a matching fixing frame 13 is installed on the side walls of the housing 1 and the top plate 11, a fixing pin 14 is installed on the fixing frame 13 installed on the housing 1, a rubber pad is provided on the side wall of the top plate 11, an amplifier body 4 is installed inside the housing 1, a shielding layer 12 is installed on the inner wall of the housing 1, through grooves are provided on the side walls of both sides of the housing 1, a filter 2 and a fan 3 are installed on the through groove of the housing 1, and a replacement mechanism 5 is provided on the through groove of the housing 1;

[0021] The replacement mechanism 5 includes a mounting groove 51, an unlocking plate 52, a fixing protrusion 53, a guide rod 54 and a spring 55. The top of the through groove of the shell 1 is provided with a mounting groove 51, and a sealing plate 15 is installed on the mounting groove 51. The sealing plate 15 is fixed to the mounting groove 51 by the cooperation of the fixing frame 13 and the fixing pin 14. The inside of the shell 1 is provided with an unlocking plate 52 by the spring 55. The unlocking plate 52 is located below the mounting groove 51 and is provided with a protrusion that passes through the side wall of the through groove of the shell 1. The top of the unlocking plate 52 is provided with a fixing protrusion 53 that passes through the side wall of the through groove of the shell 1, and the side wall of the filter 2 is provided with a groove that cooperates with the fixing protrusion 53.

[0022] The housing 1 is used to install the remaining components of the device. The fan 3 can draw external air into the interior of the housing 1 to achieve cooling of the device. The filter 2 can filter the air drawn into the interior of the housing 1 by the fan 3 to prevent external debris from entering the interior of the housing 1 and adhering to the amplifier body 4, resulting in an increase in the heat generated by the amplifier body 4 during use, resulting in the heat dissipation effect of the device being affected. A groove is provided on the top surface of the housing 1 to facilitate users to repair and replace the fan 3 and the amplifier body 4. The top plate 11 can seal the groove on the top surface of the housing 1 to ensure that external dust does not enter the housing 1 through the groove on the top surface of the housing 1. The rubber pad provided on the top plate 11 improves the sealing effect of the top plate 11. The top plate 11 is fixed to the housing 1 through the cooperation of the fixing frame 13 and the fixing pin 14 provided on the housing 1 and the top plate 11, thereby ensuring the stability of the top plate 11. The shielding layer 12 plays a shielding role. The shielding layer 12 is a breathable structure to ensure that the airflow can pass through the shielding layer 12, thereby ensuring the heat dissipation capacity of the device. The replacement mechanism 5 is convenient for users to replace the filter 2;

[0023] The mounting groove 51 is used to place the filter 2 to be replaced, and the sealing plate 15 can seal the mounting groove 51 to prevent external dust from entering the interior of the housing 1 through the mounting groove 51. The sealing gasket arranged on the sealing plate 15 further improves the working effect of the sealing plate 15. The cooperation of the fixing frame 13 and the fixing pin 14 ensures the stability of the sealing plate 15 installed on the mounting groove 51. The fixing protrusion 53 is used to fix the filter 2 to ensure the stability of the filter 2 after being installed on the housing 1. When the new filter 2 is installed on the mounting groove 51, it will push the unlocking plate 52 together, and the moving unlocking plate 52 will move with the fixing protrusion 53, thereby releasing the fixing of the fixing protrusion 53 to the filter 2. At this time, the user can remove the filter 2 to be replaced from the device. The spring 55 is installed on the unlocking plate 52 to ensure that the unlocking plate 52 can be quickly released when the external pressure disappears. The filter 2 is then quickly returned to its original position. When the user removes the old filter 2, the filter 2 on the mounting groove 51 filters the air, preventing foreign matter from entering the interior of the housing 1 during the process of replacing or cleaning the filter 2 by the user, thereby affecting the working effect of the filter 2. The user moves the new filter 2, and the filter 2 moves toward the outside of the device. As the filter 2 moves, the fixing protrusion 53 enters the interior of the bottom surface groove of the filter 2, thereby ensuring the stability of the filter 2 after the movement. After the sealing plate 15 is installed on the mounting groove 51, the bottom surface of the sealing plate 15 and the top surface of the through groove of the housing 1 are located on the same horizontal plane. After the sealing plate 15 is installed on the mounting groove 51, the sealing plate 15 will squeeze the new filter 2, thereby ensuring the stability of the new filter 2 after being installed on the mounting groove 51, so that the user can smoothly replace the filter 2.

[0024] Specifically, the width of the top surface protrusion of the unlocking plate 52 is greater than the width of the fixing protrusion 53 .

[0025] The width of the top protrusion of the unlocking plate 52 ensures that the top protrusion of the unlocking plate 52 cannot enter the interior of the bottom surface groove of the filter 2, ensuring that the filter 2 will not be hindered by the top protrusion of the unlocking plate 52 during movement, thereby ensuring the stability of the filter 2 during movement.

[0026] Specifically, the position where the protrusion on the top surface of the unlocking plate 52 is disposed is located in the middle of the unlocking plate 52 .

[0027] The position of the protrusion on the top surface of the unlocking plate 52 ensures that when the user presses down the unlocking plate 52 through the filter 2, the two ends of the unlocking plate 52 will not tilt, thereby ensuring the stability of the unlocking plate 52 during movement and ensuring that the user can smoothly release the fixing protrusion 53 from fixing the filter 2.

[0028] Specifically, a plurality of guide rods 54 penetrating the unlocking plate 52 are installed on the side wall of the groove of the housing 1 for installing the unlocking plate 52 , and grooves cooperating with the guide rods 54 are provided inside the top protrusion of the unlocking plate 52 and the fixing protrusion 53 .

[0029] The guide rod 54 plays a guiding role, ensuring the stability of the unlocking plate 52 during movement. The shape of the top protrusion of the unlocking plate 52 and the bottom groove of the fixing protrusion 53 ensures that the top protrusion of the unlocking plate 52 and the top surface of the fixing protrusion 53 can move to a position level with the bottom surface of the through groove of the shell 1, ensuring that the user will not be hindered in the process of moving the filter screen 2.

[0030] Specifically, the filter screen 2 includes a guide groove 21, a handle 22, a sealing layer 23 and a placement groove 24. Several guide grooves 21 are opened on the top of the filter screen 2. The side wall of the groove where the filter screen 2 is installed in the outer shell 1 is provided with a protrusion that cooperates with the guide groove 21. A placement groove 24 is opened on the side wall of the filter screen 2. The handle 22 is hinged on the placement groove 24. A sealing layer 23 is installed on the side wall of the filter screen 2.

[0031] The cooperation between the guide groove 21 and the top surface protrusion of the through groove of the shell 1 ensures the stability of the filter 2 during movement. The sealing layer 23 can seal the gap between the filter 2 and the side wall of the through groove of the shell 1, thereby ensuring the working effect of the filter 2. The handle 22 is convenient for the user to apply force and to move the filter 2. The placement groove 24 is used to place the handle 22.

[0032] Specifically, the upper and lower side walls of the bottom portion of the placement groove 24 are in the shape of arc surfaces.

[0033] The shape of the side wall of the bottom portion of the placement slot 24 is convenient for the user to move the handle 22 out of the placement slot 24 , thereby making it convenient for the user to move the filter screen 2 .

[0034] Specifically, the wind directions of the fans 3 installed on the two through slots of the housing 1 are opposite, and two fans 3 are installed on one through slot of the housing 1 .

[0035] One group of fans 3 delivers external air into the housing 1, and the other group discharges the air inside the housing 1, thereby increasing the temperature drop rate inside the housing 1. By arranging two fans 3 on a through groove, the working effect of the fans 3 is improved.

[0036] The working principle and use process of the utility model are as follows: when the device is used, the fan 3 is started, and the outside air is sucked into the interior of the shell 1 by the fan 3 on one side, and then the air inside the shell 1 is sucked out of the device by the fan 3 on the other side, thereby achieving cooling. The circulating airflow will pass through the filter screen 2 to prevent foreign impurities from being brought into the interior of the shell 1 by the airflow. When the filter screen 2 is replaced, the cooperation between the fixing frame 13 and the fixing pin 14 set on the sealing plate 15 is released, the sealing plate 15 is removed from the installation groove 51, and a new filter screen 2 is inserted into the installation groove 51, and the sealing plate 15 is installed back on the installation groove 51, and the sealing plate 15 is fixed by the cooperation of the fixing frame 13 and the fixing pin 14. After the sealing plate 15 is installed back on the mounting groove 51, the filter screen 2 will move downward under the pressure of the sealing plate 15, and the downward moving filter screen 2 will press the unlocking plate 52, and the unlocking plate 52 will move together with the fixing protrusion 53, and the fixing of the old filter screen 2 by the fixing protrusion 53 is released. The old filter screen 2 is removed from the outer shell 1 through the handle 22, and the new filter screen 2 is moved. When the bottom surface groove of the new filter screen 2 moves above the fixing protrusion 53, the pressure of the filter screen 2 on the guide rod 54 is released, and the unlocking plate 52 returns to its original position under the action of the spring 55. The new filter screen 2 is fixed by the cooperation of the fixing protrusion 53 and the bottom surface groove, and the replacement of the filter screen 2 is completed.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A power amplifier with a shielding structure, comprising a housing (1), a filter (2), a fan (3) and an amplifier body (4), characterized in that: It also comprises a replacement mechanism (5), a top plate (11) is hingedly connected to the top groove of the shell (1), matching fixing frames (13) are installed on the side walls of the shell (1) and the top plate (11), a fixing pin (14) is installed on the fixing frame (13) installed on the shell (1), a rubber pad is provided on the side wall of the top plate (11), the amplifier body (4) is installed inside the shell (1), a shielding layer (12) is installed on the inner wall of the shell (1), through grooves are provided on the side walls of both sides of the shell (1), the filter screen (2) and the fan (3) are installed on the through grooves of the shell (1), and the replacement mechanism (5) is provided on the through grooves of the shell (1); The replacement mechanism (5) comprises a mounting groove (51), an unlocking plate (52), a fixing protrusion (53), a guide rod (54) and a spring (55); the mounting groove (51) is provided at the top of the through groove of the housing (1); a sealing plate (15) is installed on the mounting groove (51); the sealing plate (15) is fixed to the mounting groove (51) by the cooperation of the fixing frame (13) and the fixing pin (14); the unlocking plate (52) is installed inside the housing (1) by the spring (55); a protrusion penetrating the side wall of the through groove of the housing (1) is provided on the unlocking plate (52) at a position below the mounting groove (51); the fixing protrusion (53) penetrating the side wall of the through groove of the housing (1) is installed on the top of the unlocking plate (52); and a groove cooperating with the fixing protrusion (53) is provided on the side wall of the filter screen (2).

2. The power amplifier with a shielding structure according to claim 1, characterized in that: The width of the protrusion on the top surface of the unlocking plate (52) is greater than the width of the fixing protrusion (53).

3. The power amplifier with a shielding structure according to claim 1, characterized in that: The position where the protrusion on the top surface of the unlocking plate (52) is arranged is located in the middle of the unlocking plate (52).

4. The power amplifier with a shielding structure according to claim 1, characterized in that: A plurality of guide rods (54) penetrating the unlocking plate (52) are installed on the side wall of the groove of the housing (1) for installing the unlocking plate (52), and grooves cooperating with the guide rods (54) are provided inside the top protrusion of the unlocking plate (52) and the fixing protrusion (53).

5. The power amplifier with a shielding structure according to claim 1, characterized in that: The filter screen (2) comprises a guide groove (21), a handle (22), a sealing layer (23) and a placement groove (24); a plurality of the guide grooves (21) are provided on the top of the filter screen (2); a protrusion matching the guide groove (21) is provided on the side wall of the groove on which the filter screen (2) is installed on the housing (1); the placement groove (24) is provided on the side wall of the filter screen (2); the handle (22) is hinged on the placement groove (24); and the sealing layer (23) is installed on the side wall of the filter screen (2).

6. The power amplifier with a shielding structure according to claim 5, characterized in that: The upper and lower side walls of the bottom portion of the placement groove (24) are in the shape of arc surfaces.

7. The power amplifier with a shielding structure according to claim 1, characterized in that: The wind directions of the fans (3) installed on the two through slots of the housing (1) are opposite, and two fans (3) are installed on one through slot of the housing (1).

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