Clamping device for testing sound pressure and oscillation frequency of active buzzer

Abstract

The utility model relates to the technical field of active buzzer testing equipment, and discloses a clamping device for testing sound pressure and oscillation frequency of an active buzzer, which comprises a testing box, a function box fixedly mounted on the inner wall of the bottom of the testing box, a positioning seat fixedly mounted on the top of the function box, and an active buzzer body placed on the top of the positioning seat. A data analyzer is arranged at the top of the test box, pins are arranged at the top of the active buzzer body, and the pins are electrically connected with the data analyzer through wires; and two seat holes are formed in the top of the functional box. Compared with the prior art, the active buzzer testing device has the following advantages and effects that the clamping mechanism is arranged, the purpose of effectively clamping and fixing the active buzzer body can be achieved, the sealing mechanism is arranged, the situation that interference factors such as external noise enter a testing environment can be reduced, and the testing efficiency is improved. The purpose of improving the sound pressure test accuracy by ensuring that the microphone mainly receives the sound emitted by the active buzzer can be achieved.

Description

Technical Field

[0001] This application relates to the technical field of active buzzer testing equipment, and in particular to a clamping device for testing the sound pressure and oscillation frequency of an active buzzer. Background Technology

[0002] A buzzer is an integrated electronic sounder powered by DC voltage. It is widely used in electronic products such as computers, printers, copiers, alarms, electronic toys, automotive electronics, telephones, and timers as a sound-generating device. Typically, the sound performance of a buzzer must be tested before it leaves the factory. The ideal signal for an active buzzer to operate is DC, usually marked as VDC, VDD, etc., because the buzzer has a simple oscillation circuit inside that can convert constant DC into a pulse signal of a certain frequency, thereby realizing the alternation of the magnetic field and driving the aluminum plate to vibrate and produce sound.

[0003] A search revealed a patent document with authorization announcement number CN214067298U, which discloses an active buzzer testing device. The device includes a main body, a power supply box fixedly mounted on the upper surface of the main body, an emergency stop button fixedly mounted on the upper surface of the power supply box, and a control button fixedly mounted on the upper surface of the power supply box. The device connects to a first connecting line and a second connecting line via positive and negative power lines, respectively. The control button enables the power supply box to transmit power, allowing current to enter the buzzer. The main power line ensures that the first and second connecting lines are not tangled, allowing current to be transmitted to the resonance chamber, causing the multivibrator to vibrate. This, in turn, allows the multivibrator to transmit an audio signal to a signal transmitter, which in turn enables an impedance matching device to drive a piezoelectric buzzer to produce sound, thus achieving a more effective testing method for the buzzer.

[0004] In practical use, it has been found that existing testing devices cannot effectively fix the buzzer, causing the buzzer to shift due to vibration during testing. At the same time, they cannot isolate the buzzer from sound, which can easily lead to external noise interfering with the test. Therefore, we propose a clamping device for testing the sound pressure and oscillation frequency of an active buzzer to solve the above problems. Utility Model Content

[0005] The purpose of this application is to address the shortcomings of existing technologies, such as the inability to effectively fix the buzzer, which causes the buzzer to shift due to vibration during testing, and the inability to insulate the buzzer, which easily leads to external noise interfering with the test. Therefore, this application proposes a clamping device for testing the sound pressure and oscillation frequency of an active buzzer.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a clamping device for testing the sound pressure and oscillation frequency of an active buzzer, comprising a test box, a functional box fixedly installed on the inner wall of the bottom of the test box, a positioning seat fixedly installed on the top of the functional box, an active buzzer body placed on the top of the positioning seat, a data analyzer set on the top of the test box, pins set on the top of the active buzzer body, and the pins electrically connected to the data analyzer through wires; two seat holes are opened on the top of the functional box, the positioning seat is located between the two seat holes, a motor is fixedly installed on the inner wall of the bottom of the functional box, a bidirectional mechanism is set inside the functional box, a clamping mechanism is set above the functional box, a lifting mechanism is set between the functional box and the test box, a plate hole is opened on the top of the test box, and a sealing mechanism is set inside the plate hole.

[0007] A further configuration of this application is as follows: the bidirectional mechanism includes a bidirectional lead screw and two lead screw seats. The same bidirectional lead screw is rotatably installed on the inner walls of both sides of the functional box. Two lead screw seats are threaded onto the bidirectional lead screw. The lead screw seats are slidably connected to the corresponding seat holes. A sliding mechanism is provided between the lead screw seats and the functional box. A first gear mechanism is provided between the bidirectional lead screw and the motor output shaft.

[0008] By adopting the above technical solution and by setting up a bidirectional mechanism, the bidirectional lead screw can drive the two lead screw seats to move towards each other, thereby driving the arc-shaped seat to move closer to the active buzzer body.

[0009] A further configuration of this application is as follows: the sliding mechanism includes two sliders and two slide grooves, the bottom of the lead screw seat is provided with a slider, the inner wall of the bottom of the function box is provided with two slide grooves, the motor is located between the two slide grooves, and the sliders are slidably connected to the corresponding slide grooves.

[0010] By adopting the above technical solution and incorporating a sliding mechanism, the lead screw seat moves more smoothly when moving left and right.

[0011] A further configuration of this application is: the first gear mechanism includes two first bevel gears, and the first bevel gears are fixedly sleeved on both the bidirectional lead screw and the motor output shaft. The first bevel gears are located between the two lead screw seats, and the two first bevel gears mesh with each other.

[0012] By adopting the above technical solution and by setting a first gear mechanism, the motor can drive the bidirectional lead screw to rotate.

[0013] A further feature of this application is that the clamping mechanism includes two arc-shaped seats and a shock-absorbing pad. An arc-shaped seat is fixedly installed on the top of the lead screw seat, and a shock-absorbing pad is provided on the inner wall of the arc-shaped seat. The shock-absorbing pad is adapted to the active buzzer body, and a microphone is provided on the top of the arc-shaped seat.

[0014] By adopting the above technical solution and by setting up a clamping mechanism, the arc-shaped seat can drive the shock-absorbing pad to contact and clamp the active buzzer body, thereby achieving the purpose of effectively clamping and fixing the active buzzer body. At the same time, the microphone can convert the received sound pressure signal into an electrical signal. Since the relative position of the microphone and the buzzer is kept fixed in each test by the clamping mechanism and the positioning seat, it can be ensured that the sound pressure signal is obtained under the same test conditions.

[0015] A further configuration of this application is as follows: the lifting mechanism includes two screws and two screw seats; two screws are rotatably installed on the inner wall of the top of the test box; the plate hole is located between the two screws; the bottom end of the screw extends into the functional box; screw seats are threaded on the screws; and a second gear mechanism is provided between the screws and the bidirectional lead screw.

[0016] By adopting the above technical solution and by setting up a lifting mechanism, the screw can drive the screw seat to move up and down, thereby achieving the purpose of driving the connecting plate to move up and down.

[0017] A further configuration of this application is as follows: the second gear mechanism includes two second bevel gears and two third bevel gears, two second bevel gears are fixedly sleeved on the bidirectional lead screw, the second bevel gears are located outside the corresponding lead screw seat, and a third bevel gear is fixedly sleeved at the bottom end of the screw, the second bevel gears mesh with the corresponding third bevel gears.

[0018] By adopting the above technical solution and by setting a second toothed mechanism, the bidirectional lead screw can drive the screw to rotate.

[0019] A further feature of this application is that the sealing mechanism includes a connecting plate and a sealing plate, the connecting plate is fixedly installed on the front side of the screw seat, the sealing plate is fixedly installed on the front side of the connecting plate, and the sealing plate is slidably connected to the plate hole.

[0020] By adopting the above technical solution and setting a sealing mechanism, the sealing plate can seal the test box, thereby reducing the entry of external noise and other interference factors into the test environment and ensuring that the microphone mainly receives the sound emitted by the active buzzer, thus improving the accuracy of the sound pressure test.

[0021] The beneficial effects of this application are:

[0022] (1) Through the cooperation of the motor, the first bevel gear, the double-acting screw, the screw seat, the arc seat and the shock-absorbing pad, the motor can drive the two shock-absorbing pads to approach the active buzzer body, and can contact and clamp the active buzzer body, so as to effectively clamp and fix the active buzzer body. The shock-absorbing pads can not only increase the friction force and prevent the active buzzer body from moving during the test, but also buffer the clamping force and avoid damaging the active buzzer body.

[0023] (2) Through the cooperation of the bidirectional lead screw, the second bevel gear, the third bevel gear, the screw, the screw seat, the connecting plate and the sealing plate, the bidirectional lead screw can drive the sealing plate to move downward, which can achieve the purpose of sealing the test box, reduce the interference factors such as external noise entering the test environment, and ensure that the microphone mainly receives the sound emitted by the active buzzer, thereby improving the accuracy of the sound pressure test. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a clamping device for testing the sound pressure and oscillation frequency of an active buzzer, as described in this application.

[0026] Figure 2 This is a schematic diagram of the main structure of a clamping device for testing the sound pressure and oscillation frequency of an active buzzer according to this application;

[0027] Figure 3 This is a three-dimensional structural diagram of the sealing mechanism of a clamping device for testing the sound pressure and oscillation frequency of an active buzzer, as described in this application.

[0028] Figure 4 This is a three-dimensional structural diagram of the clamping mechanism of a clamping device for testing the sound pressure and oscillation frequency of an active buzzer, as described in this application.

[0029] In the diagram: 1. Test box; 2. Function box; 3. Positioning seat; 4. Active buzzer body; 5. Pin; 6. Data analyzer; 7. Wire; 8. Motor; 9. Bidirectional lead screw; 10. Lead screw seat; 11. Arc seat; 12. Shock-absorbing pad; 13. First bevel gear; 14. Slider; 15. Slide groove; 16. Screw; 17. Screw seat; 18. Connecting plate; 19. Sealing plate; 20. Plate hole; 21. Microphone; 22. Second bevel gear; 23. Third bevel gear. Detailed Implementation

[0030] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] See Figures 1-4 This application provides a clamping device for testing the sound pressure and oscillation frequency of an active buzzer, including a test box 1. A function box 2 is fixedly installed on the inner wall of the bottom of the test box 1. A positioning seat 3 is fixedly installed on the top of the function box 2. An active buzzer body 4 is placed on the top of the positioning seat 3. A data analyzer 6 is set on the top of the test box 1. A pin 5 is set on the top of the active buzzer body 4. The pin 5 is electrically connected to the data analyzer 6 through a wire 7. Two seat holes are opened on the top of the function box 2. The positioning seat 3 is located between the two seat holes. A motor 8 is fixedly installed on the inner wall of the bottom of the function box 2. A bidirectional mechanism is set inside the function box 2. A clamping mechanism is set above the function box 2. A lifting mechanism is set between the function box 2 and the test box 1. A plate hole 20 is opened on the top of the test box 1. A sealing mechanism is set inside the plate hole 20.

[0032] Specifically, the bidirectional mechanism includes a bidirectional lead screw 9 and two lead screw seats 10. The same bidirectional lead screw 9 is rotatably installed on the inner walls of both sides of the function box 2. Two lead screw seats 10 are threaded on the bidirectional lead screw 9. The lead screw seats 10 are slidably connected to the corresponding seat holes. A sliding mechanism is provided between the lead screw seats 10 and the function box 2. A first gear mechanism is provided between the bidirectional lead screw 9 and the output shaft of the motor 8.

[0033] Specifically, the sliding mechanism includes two sliders 14 and two slide grooves 15. The bottom of the lead screw seat 10 is provided with sliders 14, and the bottom inner wall of the function box 2 is provided with two slide grooves 15. The motor 8 is located between the two slide grooves 15, and the sliders 14 are slidably connected to the corresponding slide grooves 15.

[0034] Specifically, the first gear mechanism includes two first bevel gears 13. The first bevel gears 13 are fixedly sleeved on both the bidirectional lead screw 9 and the output shaft of the motor 8. The first bevel gears 13 are located between the two lead screw seats 10, and the two first bevel gears 13 mesh with each other.

[0035] Specifically, the clamping mechanism includes two arc-shaped seats 11 and a shock-absorbing pad 12. The arc-shaped seats 11 are fixedly installed on the top of the lead screw seat 10. The inner wall of the arc-shaped seats 11 is provided with shock-absorbing pads 12. The shock-absorbing pads 12 are adapted to the active buzzer body 4. A microphone 21 is provided on the top of the arc-shaped seats 11.

[0036] Specifically, the lifting mechanism includes two screws 16 and two screw seats 17. Two screws 16 are rotatably installed on the inner wall of the top of the test box 1. The plate hole 20 is located between the two screws 16. The bottom end of the screw 16 extends into the functional box 2. The screw seat 17 is threaded on the screw 16. A second gear mechanism is provided between the screw 16 and the bidirectional lead screw 9.

[0037] Specifically, the second gear mechanism includes two second bevel gears 22 and two third bevel gears 23. Two second bevel gears 22 are fixedly sleeved on the bidirectional lead screw 9. The second bevel gears 22 are located outside the corresponding lead screw seat 10. The third bevel gear 23 is fixedly sleeved at the bottom end of the screw 16. The second bevel gears 22 and the corresponding third bevel gears 23 mesh with each other.

[0038] Specifically, the sealing mechanism includes a connecting plate 18 and a sealing plate 19. The connecting plate 18 is fixedly installed on the front side of the screw seat 17, and the sealing plate 19 is fixedly installed on the front side of the connecting plate 18. The sealing plate 19 is slidably connected to the plate hole 20.

[0039] In this application, during use, the active buzzer body 4 is first placed on the positioning seat 3 on top of the function box 2. The positioning seat 3 provides an initial placement position for the buzzer, ensuring that the buzzer has a relatively fixed position in the horizontal direction, preparing for subsequent precise clamping and testing. By starting the motor 8 in the forward direction, the two first bevel gears 13 can drive the bidirectional lead screw 9 to rotate clockwise, which can drive the two lead screw seats 10 to move towards each other. The arc-shaped seat 11 on the top of the lead screw seat 10 then moves closer to the active buzzer body 4. The shock-absorbing pad 12 on the inner wall of the arc-shaped seat 11 contacts and clamps the active buzzer body 4, enabling the active buzzer body 4 to be clamped. For the purpose of effective clamping and fixing, the shock-absorbing pad 12 not only increases friction and prevents the active buzzer body 4 from moving during the test, but also buffers the clamping force to avoid damage to the active buzzer body 4. The bidirectional lead screw 9 can drive the screw 16 to rotate clockwise through the second bevel gear 22 and the third bevel gear 23, which can drive the screw seat 17 and the connecting plate 18 to move downward, and drive the sealing plate 19 to move downward, so as to seal the test box 1, reduce the entry of external noise and other interference factors into the test environment, and ensure that the microphone 21 receives mainly the sound emitted by the active buzzer, thereby improving the accuracy of the sound pressure test.

Claims

1. A clamping device for testing the sound pressure level and oscillation frequency of an active buzzer, characterized in that, The test box (1) is included. A functional box (2) is fixedly installed on the bottom inner wall of the test box (1). A positioning seat (3) is fixedly installed on the top of the functional box (2). An active buzzer body (4) is placed on the top of the positioning seat (3). A data analyzer (6) is set on the top of the test box (1). A pin (5) is set on the top of the active buzzer body (4). The pin (5) is electrically connected to the data analyzer (6) through a wire (7). The functional box (2) has two seat holes on its top, and the positioning seat (3) is located between the two seat holes. A motor (8) is fixedly installed on the inner wall of the bottom of the functional box (2). A bidirectional mechanism is provided inside the functional box (2). A clamping mechanism is provided above the functional box (2). A lifting mechanism is provided between the functional box (2) and the test box (1). A plate hole (20) is provided on the top of the test box (1). A sealing mechanism is provided inside the plate hole (20).

2. The clamping device for testing the sound pressure and oscillation frequency of an active buzzer according to claim 1, characterized in that: The bidirectional mechanism includes a bidirectional lead screw (9) and two lead screw seats (10). The same bidirectional lead screw (9) is rotatably installed on the inner walls of both sides of the functional box (2). Two lead screw seats (10) are threaded on the bidirectional lead screw (9). The lead screw seats (10) are slidably connected to the corresponding seat holes. A sliding mechanism is provided between the lead screw seats (10) and the functional box (2). A first gear mechanism is provided between the bidirectional lead screw (9) and the output shaft of the motor (8).

3. The clamping device for testing the sound pressure and oscillation frequency of an active buzzer according to claim 2, characterized in that: The sliding mechanism includes two sliders (14) and two slide grooves (15). The bottom of the lead screw seat (10) is provided with sliders (14). The inner wall of the bottom of the function box (2) has two slide grooves (15). The motor (8) is located between the two slide grooves (15). The sliders (14) are slidably connected to the corresponding slide grooves (15).

4. The clamping device for testing the sound pressure and oscillation frequency of an active buzzer according to claim 2, characterized in that: The first gear mechanism includes two first bevel gears (13). The first bevel gears (13) are fixedly sleeved on both the bidirectional lead screw (9) and the output shaft of the motor (8). The first bevel gears (13) are located between the two lead screw seats (10) and the two first bevel gears (13) mesh with each other.

5. The clamping device for testing the sound pressure and oscillation frequency of an active buzzer according to claim 2, characterized in that: The clamping mechanism includes two arc-shaped seats (11) and a shock-absorbing pad (12). The top of the lead screw seat (10) is fixedly installed with the arc-shaped seat (11). The inner wall of the arc-shaped seat (11) is provided with a shock-absorbing pad (12). The shock-absorbing pad (12) is adapted to the active buzzer body (4). The top of the arc-shaped seat (11) is provided with a microphone (21).

6. The clamping device for testing the sound pressure and oscillation frequency of an active buzzer according to claim 1, characterized in that: The lifting mechanism includes two screws (16) and two screw seats (17). Two screws (16) are rotatably installed on the inner wall of the top of the test box (1). The plate hole (20) is located between the two screws (16). The bottom end of the screw (16) extends into the functional box (2). The screw (16) is threaded with a screw seat (17). A second gear mechanism is provided between the screw (16) and the bidirectional lead screw (9).

7. The clamping device for testing the sound pressure and oscillation frequency of an active buzzer according to claim 6, characterized in that: The second gear mechanism includes two second bevel gears (22) and two third bevel gears (23). Two second bevel gears (22) are fixedly sleeved on the bidirectional lead screw (9). The second bevel gears (22) are located outside the corresponding lead screw seat (10). The bottom end of the screw (16) is fixedly sleeved with a third bevel gear (23). The second bevel gears (22) mesh with the corresponding third bevel gears (23).

8. The clamping device for testing the sound pressure and oscillation frequency of an active buzzer according to claim 6, characterized in that: The sealing mechanism includes a connecting plate (18) and a sealing plate (19). The connecting plate (18) is fixedly installed on the front side of the screw seat (17), and the sealing plate (19) is fixedly installed on the front side of the connecting plate (18). The sealing plate (19) is slidably connected to the plate hole (20).

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