Piezoelectric ceramic testing device

Abstract

The utility model discloses a piezoelectric ceramic testing device which comprises a shielding frame and a shielding cover, first connecting blocks are arranged above the two sides of the back of the shielding frame, second connecting blocks are arranged below the two sides in the shielding cover, movable shafts are arranged in the first connecting blocks and the second connecting blocks, and the movable shafts are connected with the shielding cover. An electric rubber strip is arranged on the surface of the periphery of the inner side of the shielding cover, the shielding frame and the shielding cover are arranged, a testing space is provided for the whole piezoelectric ceramic testing device through the formed metal shielding cover, external electromagnetic interference is eliminated, and the influence of signals generated by the piezoelectric ceramic testing device on the outside world is prevented; the sealing performance between the shielding frame and the shielding cover can be enhanced, meanwhile, the electric rubber strip has the advantages of aging resistance, insulativity, temperature resistance, corrosion resistance and the like, and the specific technical or industrial application purpose can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of piezoelectric ceramic testing, and particularly relates to a piezoelectric ceramic testing device. Background Art

[0002] Piezoelectric ceramics refer to polycrystals formed by mixing oxides (such as zirconia, lead oxide, titanium oxide, etc.) through high-temperature sintering and solid-phase reaction, and are a general term for ferroelectric ceramics with piezoelectric effect after being polarized by direct current high voltage. They are a kind of functional ceramic material that can convert mechanical energy and electrical energy into each other.

[0003] When the existing piezoelectric ceramic testing device measures weak charge signals, it is easily affected by electromagnetic interference. Content of the Utility Model

[0004] The purpose of the utility model is to provide a piezoelectric ceramic testing device, which can solve the problem that the existing piezoelectric ceramic testing device is prevented from being affected by electromagnetic interference when measuring weak charge signals.

[0005] To achieve the above purpose, a piezoelectric ceramic testing device is provided, which includes a shielding frame and a shielding cover. On both sides above the back of the shielding frame, first connecting blocks are provided. Below both sides inside the shielding cover, second connecting blocks are provided. An activity shaft is arranged inside the first connecting block and the second connecting block. An electric rubber strip is arranged on the surrounding surface inside the shielding cover. On the bottom surface inside the shielding frame, an installation base is provided. On one side of the top of the installation base, a first fixing plate is provided. On the other side of the top of the installation base, a second fixing plate is provided. On the upper surface of the outer side of the first fixing plate, a testing device body is provided. On the top surface of the installation base and the lower surface inside the first fixing plate, a support platform is provided. On the upper surface inside the first fixing plate, a second limiting plate is provided. Inside the second limiting plate, a second testing electrode is provided. On the upper surface of the outer side of the second fixing plate, a motor is provided. Above the inside of the second fixing plate, a telescopic shaft is provided. At the outer end of the telescopic shaft, a first limiting plate is provided. Inside the first limiting plate, a first testing electrode is provided. Inside the first testing electrode and the second testing electrode, a piezoelectric ceramic is provided.

[0006] According to the piezoelectric ceramic testing device, the shielding cover is connected with the upper part of the shielding frame in a limiting and movable manner through the first connecting block, the second connecting block and the activity shaft inside. Both the shielding frame and the shielding cover are made of metal materials, and the shielding frame and the shielding cover form a metal shielding cover.

[0007] According to the piezoelectric ceramic testing device, the electric rubber strip is a rubber product with a conductive function, and the electric rubber strip is in sealing contact connection with the top surface of the shielding frame through fixed contact connection around the inside of the shielding cover.

[0008] According to the described piezoelectric ceramic testing device, the mounting base is in snap-fit contact connection with the inner bottom surface of the shielding frame, and the first fixing plate and the second fixing plate are respectively fixedly connected to both sides of the top of the mounting base.

[0009] According to the described piezoelectric ceramic testing device, the support table is fixedly connected to the top surface of the mounting base and is in contact connection with the lower surface inside the first fixing plate.

[0010] According to the described piezoelectric ceramic testing device, the second limiting plate is fixedly connected to the upper part inside the first fixing plate, and the second testing electrode is fixedly in contact connection with the inside of the second limiting plate.

[0011] According to the described piezoelectric ceramic testing device, the telescopic shaft is fixedly in contact connection with the upper surface of the outside of the second fixing plate and is electrically controlled and connected to the motor. The motor is fixedly connected to the upper part of the outside of the second fixing plate, and the first limiting plate is fixedly in contact connection with the outer end of the telescopic shaft.

[0012] According to the described piezoelectric ceramic testing device, the testing device body is fixedly in contact connection with the first testing electrode and the second testing electrode through the upper surface of the outside of the first fixing plate for signal transmission connection. The piezoelectric ceramic is fixedly connected by being clamped inside the first testing electrode and the second testing electrode and is in contact connection with the upper surface of the support table.

[0013] The beneficial effects of the above solution: By providing the shielding frame and the shielding cover, a metal shielding cover is formed to provide a testing space for the overall piezoelectric ceramic testing device, achieving the elimination of external electromagnetic interference and preventing the signals generated by itself from affecting the outside world. Then, through the conductive rubber product, the electro-rubber strip, the tightness between the shielding frame and the shielding cover can be strengthened. At the same time, the electro-rubber strip also has the advantages of anti-aging, insulation, heat resistance, corrosion resistance, etc., and can achieve specific technical or industrial application purposes.

[0014] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0016] Figure 1 It is a schematic structural diagram of a piezoelectric ceramic testing device of the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the shielding cover of a piezoelectric ceramic testing device of the present utility model;

[0018] Figure 3Schematic diagram of the structure of the internal equipment of a piezoelectric ceramic testing device of the present utility model;

[0019] Figure 4 Exploded schematic diagram of the structure of the limit plate of a piezoelectric ceramic testing device of the present utility model;

[0020] Figure 5 Schematic diagram of the structure of the internal equipment of a piezoelectric ceramic testing device of the present utility model from another angle.

[0021] Legend description:

[0022] 1. Shielding frame; 2. Shielding cover; 3. First connection block; 4. Second connection block; 5. Electric rubber strip; 6. Installation base; 7. Motor; 8. Testing device body; 9. Support table; 10. First fixing plate; 11. Second fixing plate; 12. First limit plate; 13. Second limit plate; 14. First test electrode; 15. Second test electrode; 16. Piezoelectric ceramic; 17. Telescopic shaft. Specific implementation manners

[0023] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0024] Refer to Figures 1-5 , a piezoelectric ceramic testing device according to an embodiment of the present utility model includes a shielding frame 1 and a shielding cover 2. First connection blocks 3 are provided above both sides of the back of the shielding frame 1, second connection blocks 4 are provided below both sides inside the shielding cover 2, a movable shaft is provided inside the first connection block 3 and the second connection block 4, an electric rubber strip 5 is provided on the peripheral surface inside the shielding cover 2, an installation base 6 is provided on the bottom surface inside the shielding frame 1, a first fixing plate 10 is provided on one side of the top of the installation base 6, a second fixing plate 11 is provided on the other side of the top of the installation base 6, a testing device body 8 is provided on the upper surface of the outer side of the first fixing plate 10, a support table 9 is provided on the top surface of the installation base 6 and the lower surface inside the first fixing plate 10, a second limit plate 13 is provided on the upper surface inside the first fixing plate 10, a second test electrode 15 is provided inside the second limit plate 13, a motor 7 is provided on the upper surface of the outer side of the second fixing plate 11, a telescopic shaft 17 is provided inside the upper part of the second fixing plate 11, a first limit plate 12 is provided at the outer end of the telescopic shaft 17, a first test electrode 14 is provided inside the first limit plate 12, and a piezoelectric ceramic 16 is provided inside the first test electrode 14 and the second test electrode 15.

[0025] The shielding cover 2 is connected to the upper part of the shielding frame 1 in a limited and movable manner through the first connecting block 3, the second connecting block 4 and the internal movable shaft. Both the shielding frame 1 and the shielding cover 2 are made of metal materials, and the shielding frame 1 and the shielding cover 2 form a metal shielding cover. By providing the shielding frame 1 and the shielding cover 2, a test space is provided for the overall piezoelectric ceramic testing device by forming the metal shielding cover, achieving the elimination of external electromagnetic interference and preventing the signals generated by itself from affecting the outside world. The electrically conductive rubber strip 5 is a rubber product with electrical conductivity. The electrically conductive rubber strip 5 is in sealed contact connection with the top surface of the shielding frame 1 through fixed contact connection around the inner side of the shielding cover 2. By providing the electrically conductive rubber strip 5, the airtightness between the shielding frame 1 and the shielding cover 2 can be enhanced by using the electrically conductive rubber strip 5, a rubber product with electrical conductivity. At the same time, the electrically conductive rubber strip 5 also has advantages such as anti-aging property, insulation property, temperature resistance, and corrosion resistance, and can achieve specific technical or industrial application purposes. The mounting base 6 is in snap-fit contact connection with the inner bottom surface of the shielding frame 1. The first fixing plate 10 and the second fixing plate 11 are respectively fixedly connected to both sides of the top of the mounting base 6. The support table 9 is in contact connection with the lower surface of the inner side of the first fixing plate 10 through fixed connection to the top surface of the mounting base 6. The second limiting plate 13 is fixedly connected to the upper inner side of the first fixing plate 10. By providing the support table 9, a placement function can be provided for the piezoelectric ceramic 16 that will be clamped and tested by the test electrodes on both sides. The second test electrode 15 is in fixed contact connection with the inner side of the second limiting plate 13. The telescopic shaft 17 is in electrical control connection with the motor 7 through fixed contact connection to the upper surface of the outer side of the second fixing plate 11. The motor 7 is fixedly connected to the upper surface of the outer side of the second fixing plate 11. The first limiting plate 12 is in fixed contact connection with the outer end of the telescopic shaft 17. The test device body 8 is in signal transmission connection with the first test electrode 14 and the second test electrode 15 through fixed contact connection to the upper surface of the outer side of the first fixing plate 10. The piezoelectric ceramic 16 is in contact connection with the upper surface of the support table 9 through clamping and fixing connection to the inner sides of the first test electrode 14 and the second test electrode 15.

[0026] Working principle: The overall piezoelectric ceramic testing device is positioned and snap-fitted with the inside of the shielding frame 1 through the mounting base 6. Then, the piezoelectric ceramic 16 is placed on the top surface of the support table 9, and one side thereof is in contact with the outer end of the second test electrode 15. The motor 7 is started, and the telescopic shaft 17 drives the first limiting plate 12 and the first test electrode 14 to move to one side, so that both sides of the piezoelectric ceramic 16 are tested and the performance of the piezoelectric ceramic material is evaluated through the first test electrode 14 and the second test electrode 15 and then through the test device body 8.

[0027] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those of ordinary skill in the art to which the present invention pertains.

Claims

1. A piezoelectric ceramic testing device, comprising: A shielding frame (1) and a shielding cover (2), characterized in that first connecting blocks (3) are arranged on both upper sides of the back of the shielding frame (1), second connecting blocks (4) are arranged on both lower sides of the inside of the shielding cover (2), movable shafts are arranged inside the first connecting block (3) and the second connecting block (4), an electric rubber strip (5) is arranged on the inner peripheral surface of the shielding cover (2), a mounting base (6) is arranged on the inner bottom surface of the shielding frame (1), a first fixing plate (10) is arranged on one side of the top of the mounting base (6), a second fixing plate (11) is arranged on the other side of the top of the mounting base (6), and a test device body (8) is arranged on the outer upper surface of the first fixing plate (10), A support platform (9) is provided on the top surface of the mounting base (6) and the lower inner surface of the first fixed plate (10); a second limiting plate (13) is provided on the upper inner surface of the first fixed plate (10); a second test electrode (15) is provided on the inner side of the second limiting plate (13); a motor (7) is provided on the upper outer surface of the second fixed plate (11); a telescopic shaft (17) is provided on the upper inner side of the second fixed plate (11); a first limiting plate (12) is provided at the outer end of the telescopic shaft (17); a first test electrode (14) is provided on the inner side of the first limiting plate (12); and piezoelectric ceramics (16) are provided on the inner sides of the first test electrode (14) and the second test electrode (15).

2. A piezoelectric ceramic testing device according to claim 1, characterized in that: The shielding cover (2) is connected to the top of the shielding frame (1) in a limited movable manner via the first connecting block (3), the second connecting block (4) and the internal movable shaft; the shielding frame (1) and the shielding cover (2) are both made of metal; the shielding frame (1) and the shielding cover (2) form a metal shielding cover.

3. A piezoelectric ceramic testing device according to claim 1, characterized in that: The electrical rubber strip (5) is a rubber product with a conductive function, and the electrical rubber strip (5) is sealed and contacted with the top surface of the shielding frame (1) through a fixed contact connection around the inner side of the shielding cover (2).

4. A piezoelectric ceramic testing device according to claim 1, characterized in that: The mounting base (6) is connected to the inner bottom surface of the shielding frame (1) by snap-fitting contact, and the first fixing plate (10) and the second fixing plate (11) are respectively fixedly connected to two sides of the top of the mounting base (6).

5. A piezoelectric ceramic testing device according to claim 1, characterized in that: The support platform (9) is fixedly connected to the top surface of the mounting base (6) and is in contact with the inner lower surface of the first fixing plate (10).

6. A piezoelectric ceramic testing device according to claim 1, characterized in that: The second limiting plate (13) is fixedly connected to the upper inner side of the first fixing plate (10), and the second testing electrode (15) is fixedly contacted and connected to the inner side of the second limiting plate (13).

7. A piezoelectric ceramic testing device according to claim 1, characterized in that: The telescopic shaft (17) is electrically controlled and connected to the motor (7) via a fixed contact connection on the upper surface of the outer side of the second fixed plate (11); the motor (7) is fixedly connected to the upper outer side of the second fixed plate (11); and the first limit plate (12) is fixedly connected to the outer end of the telescopic shaft (17).

8. The piezoelectric ceramic testing device according to claim 1, characterized in that: The test device body (8) is connected to the first test electrode (14) and the second test electrode (15) for signal transmission via a fixed contact connection on the upper surface of the outer side of the first fixing plate (10), and the piezoelectric ceramic (16) is connected to the upper surface of the support platform (9) via a fixed support connection on the inner side of the first test electrode (14) and the second test electrode (15).

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