Jig for testing sound box power amplifier board

Abstract

The utility model relates to the technical field of testing equipment, in particular to a loudspeaker box power amplifier board testing jig which comprises a box body, an electric push rod is fixedly connected to the top of the box body, a telescopic rod of the electric push rod is in clearance fit with the inner wall of the top of the box body, and a transverse plate is fixedly connected to the telescopic rod of the electric push rod. A test probe is installed at the bottom of the transverse plate, a square box is arranged on the inner side of the box body, and the inner wall of the top of the square box is rotationally connected with an output shaft of a first motor through a bearing. Through cooperation of the box body and the dust removal structure, a second motor drives a reciprocating lead screw to rotate, the reciprocating lead screw drives a vertical block to move left and right, and then left-right movement of a power amplifier board, starting of a draught fan, suction of dust impurities into a shell by the draught fan and blocking of the dust impurities by a filter screen are achieved, so that the dust impurities enter a collection box; workers can conveniently clean dust and impurities on the power amplifier board, and the dust and impurities are prevented from influencing the test effect of the power amplifier board.

Description

Technical Field

[0001] The utility model relates to the technical field of test equipment, in particular to a fixture for testing a speaker power amplifier board. Background Technique

[0002] The power amplifier is abbreviated as the power amplifier board. Generally, it specifically refers to a most basic device in an audio system, commonly known as an "amplifier". Its task is to amplify the weak electrical signals from the signal source (in a professional audio system, it is from the mixer) to drive the speaker to emit sound.

[0003] There is a existing fixture for testing a power amplifier board (application number: 202222823075.2), which drives the moving plate to move when the turbine moves, enabling the moving plate to translate or adjust its orientation, making the testing more convenient. However, the above still has the following problems: when testing the power amplifier board, the power amplifier board is fixed, and the moving structure is used to adjust the position of the power amplifier board. Then, the power amplifier board is tested through the test probe. When the power amplifier board is fixed for testing, it is not convenient for the staff to clean the dust and impurities on the power amplifier board, which is likely to affect the test effect of the power amplifier board. Moreover, when fixing the power amplifier board, the above device uses the instability of the quadrilateral to fix it. At this time, the spatial dimension formed by the first connecting rod and the second connecting rod is certain. When the size of the power amplifier board is larger than this space, it is very difficult to fix the power amplifier board, making it inconvenient for the staff to fix the larger-sized power amplifier board, and thus inconvenient for testing the larger-sized power amplifier board. Content of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages in the prior art that it is not convenient for the staff to clean the dust and impurities on the power amplifier board, which is likely to affect the test effect of the power amplifier board, and it is not convenient for the staff to fix the larger-sized power amplifier board, and thus inconvenient for testing the larger-sized power amplifier board, and to propose a fixture for testing a speaker power amplifier board.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] Design a fixture for testing a speaker power amplifier board, including a box body. The top of the box body is fixedly connected with an electric push rod. The telescopic rod of the electric push rod is in clearance fit with the inner wall of the top of the box body. The telescopic rod of the electric push rod is fixedly connected with a cross plate. The bottom of the cross plate is equipped with a test probe. A square box is arranged inside the box body. The inner wall of the top of the square box is rotationally connected with the output shaft of a first motor through a bearing. The top of the first motor is fixedly connected with the inner wall of the top of the square box. A dust removal structure is arranged on one side of the box body, and a fixing structure is arranged above the first motor.

[0007] Preferably, the dust removal structure includes a housing, the bottom of the housing is fixedly connected to one side of the top of the box body, a fan is fixedly connected to the inner wall above one side of the housing, a vertical plate is fixedly connected to one side of the inner wall of the housing, a filter screen is attached to the upper side of one side of the vertical plate, a collection box is attached to the bottom of the filter screen, the bottom of the collection box is attached to the bottom of the inner wall of the housing, a curved pipe is fixedly connected to the inner wall above the other side of the housing, one end of the curved pipe is fixedly connected to a flexible pipe, the outer wall of one side of the flexible pipe is in clearance fit with the inner wall above one side of the box body, one end of the flexible pipe is fixedly connected to an inclined pipe, a straight plate is fixedly connected to the outer wall of the inclined pipe, and the top of the straight plate is fixedly connected to one side of the inner wall of the top of the box body.

[0008] Preferably, a reciprocating lead screw is rotatably connected to the inner wall below one side of the box body through a bearing, one end of the reciprocating lead screw is fixedly connected to the output end of the second motor, and one end of the second motor is fixedly connected to the lower side of one side of the box body.

[0009] Preferably, a vertical block is slidably clamped on the outer wall of the reciprocating lead screw, a sliding rod is in clearance fit with the inner wall below the vertical block, and the bottom side of the sliding rod is fixedly connected to the bottom side of the inner wall of the box body.

[0010] Preferably, the top of the vertical block is fixedly connected to the bottom of the square box.

[0011] Preferably, the fixing structure includes a straight cylinder, the bottom of the straight cylinder is fixedly connected to the output shaft of the first motor, a double-headed threaded rod is rotatably connected to the inner wall of one end of the straight cylinder through a bearing, one end of the double-headed threaded rod is fixedly connected to the output end of the third motor, one end of the third motor is fixedly connected to one end of the straight cylinder, a clamping plate is threadedly connected to one side of the outer wall of the double-headed threaded rod, and the upper side of the outer wall of the clamping plate is in clearance fit with the through groove on one side of the top of the straight cylinder.

[0012] The beneficial effect of a fixture for testing a speaker power amplifier board proposed by the present utility model is that: through the cooperation of the box body and the dust removal structure, when the device is in use, the second motor can drive the reciprocating lead screw to rotate, and the reciprocating lead screw drives the vertical block to move left and right, thereby realizing the left and right movement of the power amplifier board. The fan starts to work, and the fan sucks dust and impurities into the interior of the housing. The filter screen blocks the dust and impurities, so that the dust and impurities enter the collection box, which is convenient for the staff to clean the dust and impurities on the power amplifier board and avoid the dust and impurities from affecting the test effect of the power amplifier board.

[0013] Through the cooperation of the square box, the first motor and the fixing structure, when the device is in use, the power amplifier board can be placed on the top of the straight cylinder, the third motor drives the double-headed threaded rod to rotate, the double-headed threaded rod drives the clamping plate to move inwards, and the clamping plate gradually moves from the outside to the inside, thereby realizing the fixation of the power amplifier board, facilitating the staff to fix the power amplifier board with a larger size, and thus facilitating the testing work of the power amplifier board with a larger size. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Structural schematic diagram of the present utility model;

[0015] Figure 2 Structural schematic diagram of the test probe, the horizontal plate and the electric push rod of the present utility model;

[0016] Figure 3 Structural schematic diagram of the box body, the shell and the curved pipe of the present utility model;

[0017] Figure 4 Structural schematic diagram of the vertical block, the reciprocating screw rod and the sliding rod of the present utility model;

[0018] Figure 5 Structural schematic diagram of the filter screen, the curved rod and the spring of the present utility model;

[0019] Figure 6 Structural schematic diagram of the straight cylinder, the double-headed threaded rod and the clamping plate of the present utility model.

[0020] In the figure: 1. Box body, 2. Dust removal structure, 2a1. Shell, 2a2. Filter screen, 2a3. Vertical plate, 2a4. Fan, 2a5. Curved pipe, 2a6. Collection box, 2a7. Hose, 2a8. Straight plate, 2a9. Inclined pipe, 2b1. Curved rod, 2b2. Spring, 3. Fixing structure, 301. Straight cylinder, 302. Double-headed threaded rod, 303. Clamping plate, 304. Third motor, 4. Square box, 5. First motor, 6. Vertical block, 7. Reciprocating screw rod, 8. Sliding rod, 9. Second motor, 10. Test probe, 11. Horizontal plate, 12. Electric push rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described below with reference to the accompanying drawings:

[0022] Embodiment 1:

[0023] Refer to the attached Figures 1-6In the present embodiment, a fixture for testing a speaker amplifier board comprises a box body 1, a push rod 12 is fixedly connected to the top of the box body 1, the model of the push rod 12 is determined according to the actual use situation, the telescopic rod of the push rod 12 is clearance-matched with the top inner wall of the box body 1, a sliding door is installed on the front end face of the box body 1, the telescopic rod of the push rod 12 is fixedly connected to a horizontal plate 11, a test probe 10 is installed on the bottom of the horizontal plate 11, a square box 4 is provided on the inner side of the box body 1, the top inner wall of the square box 4 is rotatably connected to the output shaft of a motor 5 through a bearing, the model of the motor 5 is determined according to the actual use situation, the top of the motor 5 is fixedly connected to the top of the inner wall of the square box 4, and a reciprocating screw 7 is rotatably connected to the inner wall at the lower side of the box body 1 through a bearing.

[0024] The bearing allows the reciprocating screw rod 7 to rotate on the lower inner wall of one side of the box body 1 when a force is applied. One end of the reciprocating screw rod 7 is fixedly connected to the output end of the motor 2 9, and one end of the motor 2 9 is fixedly connected to the lower side of the box body 1. The model of the motor 2 9 depends on the actual usage. The outer wall of the reciprocating screw rod 7 is slidably connected with a vertical block 6, and the inner wall gap below the vertical block 6 is matched with a sliding rod 8. The sliding rod 8 plays a limiting role when the vertical block 6 is subjected to force and moves left and right. The bottom side of the sliding rod 8 is fixedly connected to the bottom side of the inner wall of the box body 1, and the top of the vertical block 6 is fixedly connected to the bottom of the square box 4. A dust removal structure 2 is provided on one side of the box body 1, and a fixed structure 3 is provided above the motor 1 5. The dust removal structure 2 is convenient for the staff to clean the dust and impurities on the power amplifier board to avoid the dust and impurities affecting the test effect of the power amplifier board. The fixed structure 3 is convenient for the staff to fix the larger power amplifier board, and then it is convenient to test the larger power amplifier board.

[0025] The dust removal structure 2 includes a shell 2a1, the bottom of the shell 2a1 is fixedly connected to one side of the top of the box body 1, a fan 2a4 is fixedly connected to the upper inner wall of one side of the shell 2a1, and the model of the fan 2a4 depends on the actual usage. A vertical plate 2a3 is fixedly connected to one side of the inner wall of the shell 2a1, and a filter screen 2a2 is attached to the upper side of one side of the vertical plate 2a3. The material and mesh size of the filter screen 2a2 are determined according to the actual usage. A collecting box 2a6 is attached to the bottom of the filter screen 2a2, and the bottom of the collecting box 2a6 is attached to the bottom of the inner wall of the shell 2a1. A curved pipe 2a5 is fixedly connected to the upper inner wall on the other side of the shell 2a1, and a sliding door is installed on the front end face of the shell 2a1.

[0026] One end of the curved tube 2a5 is fixedly connected to a hose 2a7, one side of the outer wall of the hose 2a7 is gap-matched with the upper inner wall of one side of the box body 1, one end of the hose 2a7 is fixedly connected to an inclined tube 2a9, the outer wall of the inclined tube 2a9 is fixedly connected to a straight plate 2a8, and the top of the straight plate 2a8 is fixedly connected to one side of the top of the inner wall of the box body 1, so that the staff can clean the dust and impurities on the power amplifier board to avoid the dust and impurities affecting the test effect of the power amplifier board.

[0027] The fixed structure 3 includes a straight cylinder 301. The bottom of the straight cylinder 301 is fixedly connected to the output shaft of the first motor 5. One end inner wall of the straight cylinder 301 is rotatably connected to a double-headed threaded rod 302 through a bearing. The bearing enables the double-headed threaded rod 302 to rotate on the inner wall of one end of the straight cylinder 301 when stressed. One end of the double-headed threaded rod 302 is fixedly connected to the output end of the third motor 304. One end of the third motor 304 is fixedly connected to one end of the straight cylinder 301. The model of the third motor 304 is determined according to the actual use situation. One side of the outer wall of the double-headed threaded rod 302 is threadedly connected to a clamping plate 303. A rubber pad is fixedly connected above one side of the clamping plate 303. The upper part of the outer wall of the clamping plate 303 is in clearance fit with the through groove on one side of the top of the straight cylinder 301, which is convenient for the staff to fix the power amplifier board with a larger size, and thus convenient for testing the power amplifier board with a larger size.

[0028] Working principle:

[0029] When testing the power amplifier board:

[0030] Place the power amplifier board on the top of the straight cylinder 301. The third motor 304 drives the double-headed threaded rod 302 to rotate. The double-headed threaded rod 302 drives the clamping plate 303 to move inward. The clamping plate 303 gradually moves from the outside to the inside, thereby realizing the fixation of the power amplifier board. The second motor 9 starts to work. The second motor 9 drives the reciprocating lead screw 7 to rotate. The reciprocating lead screw 7 drives the vertical block 6 to move left and right, thereby realizing the left and right movement of the power amplifier board. The fan 2a4 starts to work. The fan 2a4 sucks dust and impurities into the interior of the housing 2a1. The filter screen 2a2 blocks the dust and impurities, so that the dust and impurities enter the collection box 2a6, realizing the cleaning of the dust and impurities. The first motor 5 starts to work. The first motor 5 drives the straight cylinder 301 to rotate, thereby realizing the rotation of the power amplifier board, and thus realizing the adjustment of the position and angle of the power amplifier board. The electric push rod 12 starts to work. The electric push rod 12 drives the cross plate 11 to move downward. The cross plate 11 drives the test probe 10 to move downward. The test probe 10 conducts a test on the power amplifier board.

[0031] Embodiment 2:

[0032] Refer to the attached Figures 1-6 : In this embodiment, a fixture for testing a speaker power amplifier board, wherein the dust removal structure 2 can further include a curved rod 2b1. The upper part of the outer wall of the curved rod 2b1 is in clearance fit with the groove on the top inner wall of the housing 2a1. One end of the curved rod 2b1 is in contact with the upper part of one side of the filter screen 2a2. A spring 2b2 is fixedly connected above one side of the curved rod 2b1. The spring 2b2 gives the curved rod 2b1 a force to the right. One end of the spring 2b2 is fixedly connected to the groove on the top inner wall of the housing 2a1.

[0033] Working principle:

[0034] Open the sliding door on the front end face of the housing 2a1, pull the curved rod 2b1 to the left, separate the curved rod 2b1 from the filter screen 2a2, and move the filter screen 2a2 forward, thereby realizing the disassembly of the filter screen 2a2, which is convenient for the staff to clean and replace the filter screen 2a2.

[0035] Although the present utility model has been illustrated and described by reference to the preferred embodiments, those of ordinary skill in the art should understand that various changes in form and detail may be made within the scope of the claims.

Claims

1. A fixture for testing a speaker power amplifier board, comprising a box body (1), characterized in that: The top of the box body (1) is fixedly connected with an electric push rod (12). The telescopic rod of the electric push rod (12) is in clearance fit with the inner wall of the top of the box body (1). The telescopic rod of the electric push rod (12) is fixedly connected with a cross plate (11). A test probe (10) is installed at the bottom of the cross plate (11). A square box (4) is arranged inside the box body (1). The inner wall of the top of the square box (4) is rotationally connected with the output shaft of a first motor (5) through a bearing. The top of the first motor (5) is fixedly connected with the inner wall of the top of the square box (4). A dust removal structure (2) is arranged on one side of the box body (1). A fixing structure (3) is arranged above the first motor (5).

2. The fixture for testing the speaker power amplifier board according to claim 1, characterized in that: The dust removal structure (2) includes a housing (2a1). The bottom of the housing (2a1) is fixedly connected with one side of the top of the box body (1). A blower (2a4) is fixedly connected to the inner wall of the upper side of one side of the housing (2a1). A vertical plate (2a3) is fixedly connected to the inner wall of one side of the housing (2a1). A filter screen (2a2) is attached to the upper side of one side of the vertical plate (2a3). A collection box (2a6) is attached to the bottom of the filter screen (2a2). The bottom of the collection box (2a6) is in contact with the inner wall of the bottom of the housing (2a1). A curved pipe (2a5) is fixedly connected to the inner wall of the upper side of the other side of the housing (2a1). One end of the curved pipe (2a5) is fixedly connected with a hose (2a7). The outer wall of one side of the hose (2a7) is in clearance fit with the inner wall of the upper side of one side of the box body (1). One end of the hose (2a7) is fixedly connected with an inclined pipe (2a9). A straight plate (2a8) is fixedly connected to the outer wall of the inclined pipe (2a9). The top of the straight plate (2a8) is fixedly connected with one side of the inner wall of the top of the box body (1).

3. The fixture for testing a speaker power amplifier board according to claim 1, characterized in that: The inner wall of the lower side of one side of the box body (1) is rotationally connected with a reciprocating lead screw (7) through a bearing. One end of the reciprocating lead screw (7) is fixedly connected with the output end of a second motor (9). One end of the second motor (9) is fixedly connected with the lower side of one side of the box body (1).

4. The fixture for testing a speaker power amplifier board according to claim 3, wherein: A vertical block (6) is slidably clamped on the outer wall of the reciprocating lead screw (7). The lower inner wall of the vertical block (6) is in clearance fit with a sliding rod (8). The bottom of one side of the sliding rod (8) is fixedly connected with one side of the inner wall of the bottom of the box body (1).

5. The fixture for testing a speaker power amplifier board according to claim 4, wherein: The top of the vertical block (6) is fixedly connected with the bottom of the square box (4).

6. The fixture for testing the speaker power amplifier board according to claim 1, characterized in that: The fixing structure (3) includes a straight cylinder (301). The bottom of the straight cylinder (301) is fixedly connected with the output shaft of the first motor (5). The inner wall of one end of the straight cylinder (301) is rotationally connected with a double-headed threaded rod (302) through a bearing. One end of the double-headed threaded rod (302) is fixedly connected with the output end of a third motor (304). One end of the third motor (304) is fixedly connected with one end of the straight cylinder (301). A clamping plate (303) is threadedly connected to one side of the outer wall of the double-headed threaded rod (302). The upper outer wall of the clamping plate (303) is in clearance fit with the through groove on one side of the top of the straight cylinder (301).

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