TWI387742B - Vibration testing device - Google Patents

Description

Vibration tester

The invention relates to a vibration testing device.

With the rapid development of electronic technology, our lives are increasingly dependent on electronic products, such as mobile phones, netbooks, and handheld game consoles. In order to ensure the high quality of electronic products, vibration testing has become a very important part in the production of electronic products. Typically, electronic products are placed in a vibration test device to test whether their vibration performance is up to standard. The vibration testing device includes a machine that carries an electronic product and a vibration sensor that measures vibration.

However, the vibration energy generated by the conventional electronic product under test is transmitted to the vibration sensor through the machine. During the vibration test, the vibration energy of the electronic product is absorbed by the machine part, thereby weakening the vibration sensor can detect The vibration energy of the electronic product that arrives, which in turn affects the vibration test results of the electronic product.

In view of this, it is necessary to provide a vibration test apparatus which can improve the test accuracy.

A vibration testing device includes a machine table, a vibration sensor, a conductive member, and an elastic member. The machine base includes a receiving portion for receiving an electronic product and a receiving hole, and the receiving hole is in communication with the receiving portion. A vibration sensor is used to test the vibration frequency and intensity of the electronic product. The conductive member includes a support portion and a conductive shaft, and one end of the conductive shaft is rigidly connected to the vibration sensor through the receiving hole. The elastic member is elastically coupled between the support portion and the machine table. Wherein, during testing, the electronic product is in direct contact with the other end of the conductive shaft, so that the conductive shaft can directly transmit the vibration energy of the electronic product to the vibration sensor.

Because the electronic product is in direct contact with the conduction axis, the vibration energy generated by the electronic product is directly transmitted to the vibration sensor through the conduction axis, which reduces the energy absorption of the test machine and increases the accuracy of the vibration test of the electronic product.

1 is a schematic view showing the assembly of the vibration testing device 100 of the present invention. The vibration testing apparatus 100 of the present invention includes a vibration sensor 10, a conductive member 20, an elastic member 30, and a machine table 40.

The machine 40 is used to carry the electronic product 200 to be tested (please refer to FIG. 2 ), and includes a receiving portion 42 and a receiving hole 48 . The accommodating portion 42 is for carrying the electronic product 200. The receiving hole 48 is provided in the bottom portion 44 of the accommodating portion 42 and communicates with the accommodating portion 42. The receiving hole 48 is a stepped hole, and includes a positioning hole 480, a through hole 482, and a step portion 484. The diameter of the positioning hole 480 is larger than the diameter of the through hole 482, so that the step portion 484 is formed at the intersection of the positioning hole 480 and the through hole 482.

The vibration sensor 10 is used to measure the vibration frequency and intensity of the electronic product 200, which includes a threaded hole 12.

The conductive member 20 is rigidly coupled to the vibration sensor 10 and includes a support portion 22 and a conductive shaft 24. The support portion 22 is a flange at one end of the conduction shaft 24, and the diameter of the support portion 22 is larger than the diameter of the conduction shaft 24 and smaller than the diameter of the positioning hole 480. The other end of the conduction shaft 24 away from the support portion 22 is provided with a thread. The conductive shaft 24 of the conductive member 20 is fixed in the threaded hole 12 of the vibration sensor 10 through the receiving hole 48 to rigidly connect the conductive member 20 with the vibration sensor 10. In the present embodiment, the conductive member 20 is a screw or a bolt. The conductive member 20 is fixedly coupled to the vibration sensor 10 through a screw.

In other embodiments, the support portion 22 is a pin that passes through one end of the conductive shaft 24, the length of the pin being greater than the diameter of the conductive shaft 24.

The elastic member 30 is fitted over the conductive shaft 24 and fixed between the support portion 22 and the step portion 484 to bring the conductive shaft 24 into close contact with the electronic product 200. In the present embodiment, the elastic member 30 is a spring.

2 is a schematic view showing the assembly of the vibration testing device 100 of the present invention and the electronic product 200. At the time of assembly, the electronic product 200 is housed in the accommodating portion 42 of the machine table 40, and the vibration source (not shown) of the electronic product 200 abuts against the conductive member 20. At this time, the support portion 22 of the conductive member 20 is retracted into the positioning hole 480 of the receiving hole 48, and the elastic member 30 is compressed. The vibration sensor 10 is not in direct contact with the machine table 40, that is, the vibration sensor 10 is suspended.

During the vibration test, the vibration energy generated by the vibration source of the electronic product 200 is directly transmitted to the vibration sensor 10 through the conductive member 20, and then transmitted to a signal analyzer (not shown), such as a computer, to analyze the electronic product 200. Vibration frequency and intensity.

Since the electronic product 200 is in close contact with the conductive shaft 24, the vibration energy generated by the electronic product 200 is directly transmitted to the vibration sensor 10 through the conduction shaft 24, thereby reducing the absorption of the vibration energy of the electronic product 200 by the machine 40, and increasing the electrons. The accuracy of the product 200 vibration test.

Since the conductive shaft 24 is rigidly connected to the vibration sensor 10, the absorption of the vibration energy of the electronic product 200 by the conduction shaft 24 is reduced, and the accuracy of the vibration test of the electronic product 200 is increased.

During the vibration test, the vibration sensor 10 is not in contact with the machine 40, so that the vibration generated by the machine 40 is not transmitted to the vibration sensor 10, so that the vibration frequency and amplitude measured by the vibration sensor 10 are accurate and Stable, not affected by other institutions, thereby ensuring the accuracy of the test of the vibration frequency and intensity of the electronic product 200.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims.

100‧‧‧Vibration test device

10‧‧‧Vibration sensor

12‧‧‧Threaded holes

20‧‧‧Transmission parts

22‧‧‧Support

24‧‧‧Transmission axis

30‧‧‧Flexible components

40‧‧‧ machine

42‧‧‧ Housing Department

44‧‧‧ bottom

48‧‧‧ receiving holes

480‧‧‧Positioning holes

482‧‧‧through hole

484‧‧‧Steps

200‧‧‧Electronic products

Figure 1 is a schematic view showing the assembly of the vibration testing device of the present invention.

2 is a schematic view showing the assembly of the vibration testing device and the electronic product of the present invention.

100‧‧‧Vibration test device

10‧‧‧Vibration sensor

12‧‧‧Threaded holes

20‧‧‧Transmission parts

22‧‧‧Support

24‧‧‧Transmission axis

30‧‧‧Flexible components

40‧‧‧ machine

42‧‧‧ Housing Department

44‧‧‧ bottom

48‧‧‧ receiving holes

480‧‧‧Positioning holes

482‧‧‧through hole

484‧‧‧Steps

Claims (7)

A vibration testing device comprising:
The machine base includes a receiving portion for receiving an electronic product and a receiving hole, and the receiving hole is in communication with the receiving portion;
a vibration sensor for testing the vibration frequency and intensity of the electronic product;
The conductive member includes a support portion and a conductive shaft, and one end of the conductive shaft is rigidly connected to the vibration sensor through the receiving hole; and an elastic member is elastically connected between the support portion and the machine table;
Wherein, during testing, the electronic product is in direct contact with the other end of the conductive shaft, so that the conductive shaft can directly transmit the vibration energy of the electronic product to the vibration sensor. The vibration testing device of claim 1, wherein the support portion is a flange disposed at the other end of the conductive shaft, the flange having a diameter larger than a diameter of the conductive shaft. The vibration testing device of claim 1, wherein the support portion is a pin that passes through the other end of the conduction shaft, the length of the pin being greater than the diameter of the conduction shaft. The vibration testing device of claim 2, wherein the receiving hole is a stepped hole, and includes a positioning hole, a through hole, and a step portion between the positioning hole and the through hole, The diameter of the positioning hole is larger than the diameter of the through hole. The vibration testing device of claim 4, wherein the elastic member is fixed between the support portion and the step portion. The vibration testing device of claim 4, wherein the support portion is retracted into the positioning hole during testing. The vibration testing device of claim 1, wherein the elastic member is a spring.