Crystal oscillator air tightness detection device

Abstract

The utility model provides a crystal oscillator air tightness detection device comprising a detection box, the top of the detection box is fixedly provided with a mounting rack, the mounting rack is fixedly provided with a placing mechanism, and the bottom of the placing mechanism is fixedly provided with a clamp used for placing a crystal oscillator; an extrusion mechanism is arranged in the detection box, in the process that the clamp is driven into the detection box by the placement mechanism and the extrusion mechanism is driven to operate, the extrusion mechanism extrudes liquid in the detection box into the crystal oscillator, and the liquid in the detection box is extruded into the crystal oscillator through the extrusion mechanism; by means of the infiltration capacity of liquid to gaps of the crystal oscillator under the pressure effect, the tiny gaps of the crystal oscillator and the potential air tightness problem can be effectively detected, gas in the crystal oscillator can be squeezed out to form bubbles after the liquid is poured, and whether the air tightness of the crystal oscillator is intact or not can be visually and accurately judged by observing the generation condition of the bubbles.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, specifically to a crystal oscillator airtightness testing device. Background Technology

[0002] In the field of modern electronics, crystal oscillators, as a high-precision frequency control element, are widely used in various electronic devices, such as communication equipment, computers, and navigation systems. The airtightness of crystal oscillators is one of their key performance indicators, which directly affects their stability and reliability. If the airtightness of a crystal oscillator is poor, external gases, moisture, and other impurities may seep into the crystal oscillator, causing frequency drift, accelerated aging, or even damage, thereby affecting the normal operation of electronic devices.

[0003] Traditional methods for testing the airtightness of crystal oscillators mainly rely on manual visual inspection and simple pressure tests. Manual visual inspection mainly judges the airtightness by observing whether there are obvious cracks, holes or other defects on the surface of the crystal oscillator. This method has problems such as strong subjectivity, low detection accuracy and easy to miss detections, which makes it difficult to meet the testing requirements of high-precision crystal oscillators. Simple pressure tests usually involve placing the crystal oscillator in a sealed container, applying a certain pressure and then observing whether there is gas leakage. Although this method can detect some obvious gas leakage, the detection effect is not ideal for small gaps and potential airtightness problems, and it cannot directly observe the changes in the airtightness of the crystal oscillator under different pressures. Therefore, we designed a crystal oscillator airtightness testing device. Utility Model Content

[0004] This invention provides a crystal oscillator airtightness testing device, which places the crystal oscillator in a liquid through a squeezing mechanism and a placing mechanism to perform airtightness testing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a crystal oscillator airtightness testing device, comprising a testing box, a mounting frame fixedly installed on the top of the testing box, a placement mechanism fixedly installed on the mounting frame, and a clamp for placing the crystal oscillator fixedly installed at the bottom of the placement mechanism; a squeezing mechanism is provided inside the testing box, and during the process of the clamp being driven into the testing box by the placement mechanism and driving the squeezing mechanism to run, the squeezing mechanism squeezes the liquid in the testing box into the crystal oscillator.

[0006] Preferably, the placement mechanism includes a motor, which is fixedly connected to the mounting bracket. A threaded post is fixedly connected to the power output shaft of the motor. An extension post and a sealing post are threadedly connected to the threaded post. The extension post and the sealing post are fixedly connected. An auxiliary rod is fixedly connected to the sealing post. The auxiliary rod is slidably connected to the mounting bracket.

[0007] Preferably, the placement mechanism further includes a drive box, which is fixedly connected to the extension column. A drive shaft is rotatably mounted on the drive box, and a coil spring is provided inside the drive box. One end of the coil spring is fixedly connected to the drive shaft, and the other end of the coil spring is fixedly connected to the drive box.

[0008] Preferably, the placement mechanism further includes a second bevel gear, which is fixedly mounted on the drive shaft. A first bevel gear meshes with the second bevel gear. A first rotating frame is fixedly mounted on the first bevel gear. A first positioning frame is rotatably connected to the first rotating frame. The first positioning frame is fixedly connected to the drive box. A toggle plate is fixedly mounted on the first rotating frame. A common gear is provided at the toggle plate. A toothed groove is formed through the center of the common gear. The toggle plate is located inside the toothed groove. A second rotating frame is fixedly mounted on the common gear. A second positioning frame is rotatably connected to the second rotating frame. The second positioning frame is fixedly connected to the extension column.

[0009] Preferably, a rack is fixedly installed inside the detection box, and the rack meshes with a common gear.

[0010] Preferably, the extrusion mechanism includes two extrusion plates, which are slidably connected to the detection box. A first spring is fixedly installed on the opposite sides of the two extrusion plates, and the first spring is fixedly connected to the detection box. A rotating seat is fixedly installed on the adjacent sides of the two extrusion plates, and a rotating plate is rotatably installed on the rotating seat. The two adjacent rotating plates are rotatably connected together.

[0011] Preferably, the extrusion mechanism further includes a slide plate, which is located below the rotating plate and rotatably connected to the rotating plate, and the bottom of the slide plate is connected to the detection box via a second spring.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. By squeezing liquid into the crystal oscillator through a compression mechanism, the liquid's ability to penetrate the crystal oscillator's gaps under pressure can effectively detect minute gaps and potential airtightness issues. After the liquid is injected, it forces out the gas inside the crystal oscillator, forming bubbles. By observing the formation of these bubbles, the airtightness of the crystal oscillator can be directly and accurately determined, with a detection accuracy far exceeding traditional manual visual inspection and simple pressure testing methods.

[0014] 2. The placement mechanism of the device is driven by a motor, which can quickly move the crystal oscillator into the testing chamber for testing. Simultaneously, after testing, the coil spring releases energy to drive the crystal oscillator to rotate rapidly, using centrifugal force to shake off the liquid adhering to the crystal oscillator surface. This reduces the need for subsequent crystal cleaning steps, greatly improves testing efficiency, and is suitable for rapid quality control in large-scale production.

[0015] 3. The extrusion mechanism inside the testing chamber can change the degree of extrusion of the liquid by adjusting the depth of the clamp's downward movement according to different testing needs, thereby enabling the testing of crystal oscillators with different pressure levels and sealing requirements; making this device widely applicable to the airtightness testing of crystal oscillators of various specifications and types. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a crystal oscillator airtightness testing device proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the testing box of a crystal oscillator airtightness testing device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the mounting frame and the extension column of the crystal oscillator airtightness testing device proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the drive box and a common gear in a crystal oscillator airtightness testing device proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the connection structure between the first rotating frame and the second rotating frame of a crystal oscillator airtightness testing device proposed in this utility model.

[0022] Figure 6 This is a schematic diagram of the internal structure of the drive box of a crystal oscillator airtightness testing device proposed in this utility model.

[0023] The following are the labels in the diagram: 1. Detection box; 2. Mounting bracket; 3. Motor; 4. Extrusion plate; 5. First spring; 6. Rack; 7. Second spring; 8. Slide plate; 9. Rotating plate; 10. Rotating seat; 11. Auxiliary rod; 12. Sealing column; 13. Extension column; 14. Drive box; 15. First positioning frame; 16. Second positioning frame; 17. Ordinary gear; 18. First bevel gear; 19. Drive shaft; 20. Second bevel gear; 21. First rotating frame; 22. Actuating plate; 23. Second rotating frame; 24. Coil spring; 25. Threaded column. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a crystal oscillator airtightness testing device includes a testing box 1, a mounting frame 2 fixedly installed on the top of the testing box 1, a placement mechanism fixedly installed on the mounting frame 2, and a clamp for placing the crystal oscillator fixedly installed at the bottom of the placement mechanism.

[0026] The test chamber 1 is equipped with a squeezing mechanism. When the fixture is driven into the test chamber 1 by the placement mechanism and the squeezing mechanism is driven to run, the squeezing mechanism squeezes the liquid in the test chamber 1 into the crystal oscillator.

[0027] First, place the crystal oscillator inside the fixture and hold it in place to prevent it from moving. Then, start the placement mechanism to move the crystal oscillator into the liquid inside the test chamber 1. As it moves, the placement mechanism first seals the test chamber 1 and then squeezes the squeezing mechanism, causing the squeezing mechanism to continuously squeeze the liquid inside the test chamber 1. This forces the liquid to be poured into any gaps. If the crystal oscillator is not well-sealed, there will be gaps that will be filled with liquid. After the liquid is poured in, it will squeeze out the original gas, forming bubbles. These bubbles can be used to observe whether the crystal oscillator is well-sealed. If no bubbles are generated, it means that the crystal oscillator is well-sealed.

[0028] The placement mechanism includes a motor 3, which is fixedly connected to the mounting bracket 2. A threaded post 25 is fixedly connected to the power output shaft of the motor 3. An extension post 13 and a sealing post 12 are threadedly connected to the threaded post 25. The extension post 13 and the sealing post 12 are fixedly connected. An auxiliary rod 11 is fixedly connected to the sealing post 12. The auxiliary rod 11 is slidably connected to the mounting bracket 2.

[0029] Once the crystal oscillator is placed in the fixture, the motor 3 can be started. The motor 3 drives the threaded post 25 to rotate, which in turn drives the sealing post 12 and the extension post 13 to move downward. This also causes the fixture to move downward, so that the crystal oscillator is located inside the liquid in the test chamber 1, making it convenient for testing.

[0030] The placement mechanism also includes a drive box 14, which is fixedly connected to the extension column 13. A drive shaft 19 is rotatably mounted on the drive box 14. A coil spring 24 is provided inside the drive box 14. One end of the coil spring 24 is fixedly connected to the drive shaft 19, and the other end of the coil spring 24 is fixedly connected to the drive box 14.

[0031] The placement mechanism also includes a second bevel gear 20, which is fixedly mounted on the drive shaft 19. A first bevel gear 18 meshes with the second bevel gear 20. A first rotating frame 21 is fixedly mounted on the first bevel gear 18. A first positioning frame 15 is rotatably connected to the first rotating frame 21. The first positioning frame 15 is fixedly connected to the drive box 14. A toggle piece 22 is fixedly mounted on the first rotating frame 21. A common gear 17 is provided at the toggle piece 22. A toothed groove is opened through the center of the common gear 17. The toggle piece 22 is located inside the toothed groove. A second rotating frame 23 is fixedly mounted on the common gear 17. A second positioning frame 16 is rotatably connected to the second rotating frame 23. The second positioning frame 16 is fixedly connected to the extension column 13.

[0032] A rack 6 is fixedly installed inside the testing box 1, and the rack 6 meshes with a common gear 17.

[0033] When the crystal oscillator in the fixture is driven by the motor 3 to move downward into the detection box 1, the ordinary gear 17 connected to the extension column 13 will mesh with the rack 6. However, due to the interaction between the actuating plate 22 and the ordinary gear 17, only the ordinary gear 17 will rotate continuously during the downward movement. The first rotating frame 21 and other structures will not rotate synchronously. However, after the crystal oscillator detection is completed, during the upward movement, the rack 6 and the ordinary gear 17 will interact again. At this time, the rotation of the ordinary gear 17 will act on the actuating plate 22, causing the actuating plate 22 to drive the first rotating frame 21 to rotate. The rotation causes the drive shaft 19 to rotate via the first bevel gear 18 and the second bevel gear 20. The rotation of the drive shaft 19 acts on the coil spring 24, thereby storing energy in the coil spring 24. When the ordinary gear 17 moves to the designated position, the ordinary gear 17 will disengage from the toggle plate 22. At this time, the coil spring 24 will be released. The release of the coil spring 24 will cause the second bevel gear 20 to rotate. Since the second bevel gear 20 is connected to the clamp, it can quickly drive the crystal oscillator to rotate. The rotation of the crystal oscillator will cause the liquid attached to it to be thrown away under the action of centrifugal force, reducing the subsequent cleaning steps of the crystal oscillator and improving the detection effect.

[0034] like Figure 2 As shown, the extrusion mechanism includes two extrusion plates 4, which are slidably connected to the detection box 1. A first spring 5 is fixedly installed on the opposite sides of the two extrusion plates 4, and the first spring 5 is fixedly connected to the detection box 1. A rotating seat 10 is fixedly installed on the adjacent sides of the two extrusion plates 4, and a rotating plate 9 is rotatably installed on the rotating seat 10. The two adjacent rotating plates 9 are rotatably connected together.

[0035] The extrusion mechanism also includes a slide plate 8, which is located below the rotating plate 9 and is rotatably connected to the rotating plate 9. The bottom of the slide plate 8 is connected to the detection box 1 via a second spring 7.

[0036] When the motor 3 drives the clamp to move down into the test chamber 1 and contact the slide plate 8, the slide plate 8 will continue to move down as the clamp moves down. After the slide plate 8 moves down, it will pull the rotating plate 9 to rotate, thereby bringing the two extrusion plates 4 closer together. This allows the liquid in the test chamber 1 to gather together. When the sealing column 12 seals the test chamber 1, the liquid squeezed by the two extrusion plates 4 will flow towards the gap of the crystal oscillator. If the crystal oscillator is not well sealed, there will be gaps that will be filled with liquid. After the liquid is filled, it will squeeze out the original gas and form bubbles. The bubbles can be used to observe whether the crystal oscillator is well sealed. If no bubbles are generated, it means that the crystal oscillator is well sealed. After the test is completed, the clamp returns to its original position, and the slide plate 8 will also return to its original position under the action of the second spring 7. Due to the upward movement of the slide plate 8, the extrusion plates 4 will return to their original position for easy use next time.

[0037] Furthermore, the sealing column 12 has a certain height, which allows the fixture to move down to different depths. At different depths, the two extrusion plates 4 exert different degrees of pressure on the water in the test chamber 1, and the pressure that can be tested and the sealing degree of the crystal oscillator will also be different, thus enabling it to test different crystal oscillators according to actual needs.

[0038] Working principle: First, the crystal oscillator to be tested is placed inside the fixture and clamped and fixed to ensure that the crystal oscillator will not shift during the testing process.

[0039] When the motor 3 is started, the power output shaft of the motor drives the threaded column 25 to rotate. Since the threaded column 25 is threadedly connected to the extension column 13 and the sealing column 12, the rotation of the threaded column will cause the sealing column 12 and the extension column 13 to move downward. The sealing column 12 is slidably connected to the mounting bracket 2 through the auxiliary rod 11 to ensure the stability of its movement. As the sealing column 12 and the extension column 13 move downward, the fixture also moves downward, bringing the crystal oscillator into the test box 1.

[0040] When the clamp moves down into the detection box 1 and comes into contact with the slide plate 8, the slide plate 8 will be pushed downward as the clamp continues to move down; the bottom of the slide plate 8 is connected to the detection box 1 through the second spring 7, and its downward movement will pull the rotating plate 9 to rotate.

[0041] The rotation of the rotating plate 9 causes the two extrusion plates 4 to move closer together. A first spring 5 is fixedly installed on the opposite side of the extrusion plates 4. The first spring 5 is fixedly connected to the detection box 1 and serves to reset and buffer. When the two extrusion plates 4 move closer together, the liquid in the detection box 1 is squeezed and flows towards the gap of the crystal oscillator.

[0042] If the crystal oscillator is not airtight, liquid will enter the crystal through gaps and force out the existing gas, forming bubbles. By observing whether bubbles are generated in test chamber 1, we can determine whether the crystal oscillator is airtight. If no bubbles are generated, it indicates that the crystal oscillator is airtight.

[0043] After the test is completed, the motor 3 rotates in the reverse direction, driving the threaded column 25 to rotate in the reverse direction, causing the sealing column 12 and the extension column 13 to move upward, and the clamp to rise accordingly; the slide plate 8 returns to its original position under the action of the second spring 7, and at the same time drives the rotating plate 9 to reset, and the squeezing plate 4 also returns to its original position under the action of the first spring 5, and the liquid pressure in the test box 1 returns to normal.

[0044] During the upward movement of the fixture, the ordinary gear 17 on the extension column 13 meshes with the rack 6 inside the detection box 1; due to the cooperation between the actuating plate 22 and the ordinary gear 17, the rotation of the ordinary gear 17 during the upward movement will drive the first rotating frame 21 to rotate through the actuating plate 22. The first rotating frame 21 causes the drive shaft 19 to rotate through the first bevel gear 18 and the second bevel gear 20, and the rotation of the drive shaft 19 will store energy for the coil spring 24.

[0045] Once the ordinary gear 17 moves to the designated position, it disengages from the actuating piece 22. At this point, the coil spring 24 releases energy, causing the second bevel gear 20 to rotate rapidly, which in turn drives the crystal oscillator in the fixture to rotate at high speed. Under the action of centrifugal force, the liquid adhering to the surface of the crystal oscillator is thrown away, thereby reducing the need for subsequent crystal cleaning steps and improving detection efficiency.

[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A crystal oscillator airtightness detection device, characterized by, The test box (1) is included. A mounting frame (2) is fixedly installed on the top of the test box (1). A placement mechanism is fixedly installed on the mounting frame (2). A clamp for placing a crystal oscillator is fixedly installed at the bottom of the placement mechanism. The testing box (1) is equipped with a squeezing mechanism. When the fixture is driven into the testing box (1) by the placement mechanism and the squeezing mechanism is driven to run, the squeezing mechanism squeezes the liquid in the testing box (1) into the crystal oscillator.

2. The crystal oscillator airtightness detection device according to claim 1, characterized in that: The placement mechanism includes a motor (3), which is fixedly connected to the mounting bracket (2). A threaded column (25) is fixedly connected to the power output shaft of the motor (3). An extension column (13) and a sealing column (12) are threadedly connected to the threaded column (25). The extension column (13) and the sealing column (12) are fixedly connected. An auxiliary rod (11) is fixedly connected to the sealing column (12). The auxiliary rod (11) is slidably connected to the mounting bracket (2).

3. The crystal oscillator airtightness detection device according to claim 2, characterized in that: The placement mechanism also includes a drive box (14), which is fixedly connected to the extension column (13). A drive shaft (19) is rotatably mounted on the drive box (14). A coil spring (24) is provided inside the drive box (14). One end of the coil spring (24) is fixedly connected to the drive shaft (19), and the other end of the coil spring (24) is fixedly connected to the drive box (14).

4. The crystal oscillator airtightness testing device according to claim 3, characterized in that: The placement mechanism further includes a second bevel gear (20), which is fixedly mounted on the drive shaft (19). A first bevel gear (18) meshes with the second bevel gear (20). A first rotating frame (21) is fixedly mounted on the first bevel gear (18). A first positioning frame (15) is rotatably connected to the first rotating frame (21). The first positioning frame (15) is fixedly connected to the drive box (14). A toggle piece (22) is fixedly mounted on the first rotating frame (21). A common gear (17) is provided at the toggle piece (22). A toothed groove is opened through the center of the common gear (17). The toggle piece (22) is located inside the toothed groove. A second rotating frame (23) is fixedly mounted on the common gear (17). A second positioning frame (16) is rotatably connected to the second rotating frame (23). The second positioning frame (16) is fixedly connected to the extension column (13).

5. The crystal oscillator airtightness detection device according to claim 4, characterized in that: The detection box (1) is fixedly installed with a rack (6), which meshes with a common gear (17).

6. The crystal oscillator airtightness detection device according to claim 5, characterized in that: The extrusion mechanism includes two extrusion plates (4), which are slidably connected to the detection box (1). A first spring (5) is fixedly installed on the opposite side of the two extrusion plates (4), and the first spring (5) is fixedly connected to the detection box (1). A rotating seat (10) is fixedly installed on the side of the two extrusion plates (4) that are close to each other. A rotating plate (9) is rotatably installed on the rotating seat (10), and the two adjacent rotating plates (9) are rotatably connected together.

7. The crystal oscillator airtightness detection device according to claim 6, characterized in that: The extrusion mechanism further comprises a sliding plate (8) located below the rotating plate (9) and connected with the rotating plate (9) in rotation, and the bottom of the sliding plate (8) is connected with the detection box (1) through a second spring (7).

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