Multi-channel small pressure and small caliber air pressure test tool

Abstract

The utility model provides a kind of multi-channel small pressure small caliber's air pressure test tool, it is related to air pressure test technical field, including connecting pipe, the both ends of connecting pipe are equipped with connecting block, the one end of connecting block is provided with connecting shaft, the both ends of connecting shaft are arranged in connecting pipe interior, the outside of the both ends of connecting pipe is provided with locking mechanism, the one end of connecting block is all communicated with a plurality of gas pipe, the inside of gas pipe is equipped with gas hole, and the one end of gas pipe is provided with positioning mechanism;By using gas pipe to suit firm to inlet pressure hole, and being provided with positioning mechanism, the positioning of positioning mechanism Block, fixed groove, movable block, threaded hole, threaded rod, rotating block, runner, limiting groove, limiting block and the mutual cooperation between plastic pad can be positioned and clamped processing to micro small caliber sensor and gas hole, so that micro small caliber sensor is not easy to fall due to excessive pressure when air pressure test.

Description

Technical Field

[0001] This utility model relates to the field of air pressure testing technology, and in particular to a multi-channel, low-pressure, small-diameter air pressure testing fixture. Background Technology

[0002] As a key means to ensure the sealing and pressure resistance of products, air pressure testing is widely used in fields such as microelectronics, aerospace, and medical devices. It is directly related to the operational safety and service life of products and is a core link in quality control in modern manufacturing. Most sensors are relatively large, requiring correspondingly large pressurization fixtures. Miniature, small-diameter sensors do not meet the requirements of typical pressurization fixtures. The main challenges in pressurizing small, small-diameter sensors are as follows: inconvenient pressurization clamping due to the irregular shape of the sensor; excessive number of sensors requiring pressurization at once due to application scenarios requiring simultaneous testing of multiple identical sensors; and sealing issues due to the small inlet hole, which is unsuitable for general pressurization fixtures. Therefore, this invention proposes a multi-channel, low-pressure, small-diameter pneumatic testing fixture to solve these problems. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes a multi-channel, low-pressure, small-diameter pneumatic testing fixture, which solves the problem of inconvenience in batch pneumatic testing of miniature, small-diameter sensors in the prior art.

[0004] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a multi-channel, low-pressure, small-diameter air pressure testing fixture, including a connecting pipe, connecting blocks installed at both ends of the connecting pipe, a connecting shaft provided at one end of the connecting block, the connecting shaft being located at both ends inside the connecting pipe, a locking mechanism being provided on the outer side of both ends of the connecting pipe, multiple air supply pipes being connected to one end of each connecting block, an air supply hole being opened inside the air supply pipe, and a positioning mechanism being provided at one end of the air supply pipe; The positioning mechanism includes a positioning block, a fixed groove, a movable block, a threaded hole, a threaded rod, a rotating block, a rotating wheel, and a limiting structure. The positioning block is installed on one end of the outer side of the gas pipeline. The positioning block has a fixed groove inside. A movable block is provided on one side inside the positioning block. A threaded hole is provided through one end of the positioning block. A threaded rod is provided inside the threaded hole. A rotating block is installed on one end of the movable block. One end of the threaded rod is connected to one end of the rotating block. A rotating wheel is installed on the other end of the threaded rod.

[0005] A further improvement is that the limiting structure includes a limiting groove and a limiting block. The limiting groove is opened at the bottom inside the positioning block, and the limiting block is provided inside the limiting groove. The top end of the limiting block is connected to the bottom end of the movable block.

[0006] A further improvement is that the cross-section of the limiting groove is larger than the cross-section of the limiting block, and the limiting groove and the limiting block form a sliding structure.

[0007] A further improvement is that a plastic pad is provided on the inner side of the movable block, which can protect and clamp the gas pipe.

[0008] A further improvement is that multiple gas supply pipes are provided on the outer side of the connecting block, and the multiple gas supply pipes are distributed at equal intervals on the outer side of the connecting block.

[0009] A further improvement is that the locking mechanism includes a sealing ring, a ring clamp, and a locking block. The sealing ring is installed at one end of the connecting block and fits against the connecting pipe. Ring clamps are provided on the outer sides of both ends of the connecting pipe, and locking blocks are provided on the outer sides of the ring clamps.

[0010] The beneficial effects of this utility model are as follows: By using an air supply pipe to secure the pressure inlet hole and setting up a positioning mechanism, the positioning mechanism, with its positioning block, fixed groove, movable block, threaded hole, threaded rod, rotating block, rotating wheel, limiting groove, limiting block and plastic pad, can position and clamp the miniature small-diameter sensor to the air supply hole, making it less likely for the miniature small-diameter sensor to fall off due to excessive pressure during air pressure testing; by setting up multiple small-diameter air supply pipes, each air supply pipe can be connected to the interface of a sensor at one end, which is convenient for simultaneous pressurization and collection of output data from multiple sensors; Furthermore, only one channel can be used as the input channel for the pressurized gas source, ensuring the uniqueness of the gas source input and facilitating subsequent checks on sealing. Multiple gas supply pipes are bonded together at one end to one end of the connecting block using sealant, which is then cured to ensure a tight seal. A locking mechanism is also included, using sealing rings, clamps, and locking blocks to seal and lock the connecting pipes and blocks during connection. With a multi-channel-to-multi-channel configuration, any one channel can be used as a pressure input interface, while the others serve as pressurized output interfaces, allowing for simultaneous pressure measurement of multiple sensors. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the locking mechanism of this utility model; Figure 3 This is a schematic diagram of the overall structure of the gas pipeline of this utility model; Figure 4 This is a schematic diagram of the overall structure of the positioning mechanism of this utility model.

[0012] The components are: 1. Connecting pipe; 2. Connecting block; 3. Connecting shaft; 4. Gas supply pipe; 5. Gas supply hole; 6. Positioning block; 7. Fixing groove; 8. Movable block; 9. Threaded hole; 10. Threaded rod; 11. Rotating block; 12. Rotating wheel; 13. Limiting groove; 14. Limiting block; 15. Plastic pad; 16. Sealing ring; 17. Ring clamp; 18. Locking block. Detailed Implementation

[0013] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0014] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a multi-channel, low-pressure, small-diameter pneumatic testing fixture, including a connecting pipe 1. Connecting blocks 2 are installed at both ends of the connecting pipe 1. A connecting shaft 3 is provided at one end of the connecting block 2. The connecting shaft 3 is located at both ends inside the connecting pipe 1. A locking mechanism is provided on the outer side of both ends of the connecting pipe 1. Multiple air supply pipes 4 are connected to one end of each connecting block 2. An air supply hole 5 is opened inside the air supply pipe 4. A positioning mechanism is provided at one end of the air supply pipe 4.

[0015] The positioning mechanism includes a positioning block 6, a fixed groove 7, a movable block 8, a threaded hole 9, a threaded rod 10, a rotating block 11, a rotating wheel 12, and a limiting structure. The positioning block 6 is installed on one end of the outer side of the gas pipeline 4. The fixed groove 7 is opened inside the positioning block 6. The movable block 8 is provided on one side inside the positioning block 6. The threaded hole 9 is opened through one end of the positioning block 6. The threaded rod 10 is provided inside the threaded hole 9. The rotating block 11 is installed on one end of the movable block 8. One end of the threaded rod 10 is connected to... One end of the rotating block 11 is connected to a rotating wheel 12 installed at the other end of the threaded rod 10. In use, rotating the rotating wheel 12 drives the threaded rod 10 to rotate, causing the threaded rod 10 to move inside the threaded hole 9. Then, under the limitation of the limiting groove 13 and the limiting block 14, the threaded rod 10 drives the movable block 8 to move, so that the plastic pad 15 fits against the outside of the air pipe 4, and performs secondary positioning processing on the miniature small-diameter sensor, so that the miniature small-diameter sensor is not easy to fall off due to excessive pressure during air pressure testing.

[0016] The limiting structure includes a limiting groove 13 and a limiting block 14. The limiting groove 13 is located inside the lower part of the positioning block 6. The limiting block 14 is disposed inside the limiting groove 13. The top end of the limiting block 14 is connected to the bottom end of the movable block 8. The cross-section of the limiting groove 13 is larger than the cross-section of the limiting block 14. The limiting groove 13 and the limiting block 14 form a sliding structure. In use, the mutual cooperation between the limiting groove 13 and the limiting block 14 can limit the movement of the movable block 8, making the movable block 8 more stable when moving.

[0017] A plastic pad 15 is provided on the inner side of the movable block 8. The plastic pad 15 can protect and clamp the gas pipe 4, making the gas pipe 4 less likely to be damaged during use.

[0018] Multiple air supply pipes 4 are provided on the outer side of the connecting block 2. The multiple air supply pipes 4 are distributed at equal intervals on the outer side of the connecting block 2. By setting up multiple channels to multiple channels, any one of the channels can be used as an air pressure input interface, and the rest can be used as pressurization output interfaces to meet the requirement of simultaneously measuring multiple pressure sensors.

[0019] The locking mechanism includes a sealing ring 16, a ring clamp 17, and a locking block 18. The sealing ring 16 is installed at one end of the connecting block 2 and fits against the connecting pipe 1. The outer sides of both ends of the connecting pipe 1 are provided with ring clamps 17, and the outer sides of the ring clamps 17 are provided with locking blocks 18. In use, the connecting shaft 3 is inserted into the interior of the connecting pipe 1, so that the sealing ring 16 fits against the connecting pipe 1. Then, the connecting pipe 1 and the connecting block 2 are locked by the ring clamps 17 and the locking blocks 18, completing the splicing of the connecting pipe 1 and the connecting block 2, making the connecting pipe 1 and the connecting block 2 more stable in use.

[0020] Working principle: First, the operator inserts the connecting shaft 3 into the connecting pipe 1, ensuring the sealing ring 16 fits against the connecting pipe 1. Then, the connecting pipe 1 and connecting block 2 are locked together using the ring clamp 17 and locking block 18, completing the splicing of connecting pipe 1 and connecting block 2. Next, one end of the miniature small-diameter sensor is inserted into the air inlet 5 and tightened for positioning. Then, the rotating wheel 12 drives the threaded rod 10 to rotate, causing the threaded rod 10 to move inside the threaded hole 9, thereby moving within the limiting groove 13 and the limiting block 14. Under the limit, the threaded rod 10 drives the movable block 8 to move, so that the plastic pad 15 fits against the outside of the gas pipe 4, and the miniature small-diameter sensor is repositioned. Then, any one of the gas pipes 4 that is not connected to the miniature small-diameter sensor is taken out and connected to the external pressurization device. The pressure of the miniature small-diameter sensors on the remaining gas pipes 4 is measured at the same time. After the pressure measurement is completed, the rotating wheel 12 is rotated in the opposite direction to drive the movable block 8 to move. Then, the miniature small-diameter sensor can be pulled out from one end of the gas pipe 4.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-channel, low-pressure, small-diameter pneumatic testing fixture, comprising a connecting pipe (1), characterized in that: Connecting blocks (2) are installed at both ends of the connecting pipe (1). A connecting shaft (3) is provided at one end of the connecting block (2). The connecting shaft (3) is located at both ends inside the connecting pipe (1). A locking mechanism is provided on the outer side of both ends of the connecting pipe (1). Multiple air supply pipes (4) are connected to one end of each connecting block (2). An air supply hole (5) is opened inside the air supply pipe (4). A positioning mechanism is provided at one end of the air supply pipe (4). The positioning mechanism includes a positioning block (6), a fixed groove (7), a movable block (8), a threaded hole (9), a threaded rod (10), a rotating block (11), a rotating wheel (12), and a limiting structure. The positioning block (6) is installed on one end of the outer side of the gas pipeline (4). The positioning block (6) has a fixed groove (7) inside. The movable block (8) is provided on one side inside the positioning block (6). The positioning block (6) has a threaded hole (9) through one end. The threaded rod (10) is provided inside the threaded hole (9). The movable block (8) has a rotating block (11) installed on one end. One end of the threaded rod (10) is connected to one end of the rotating block (11). The other end of the threaded rod (10) is equipped with a rotating wheel (12).

2. The multi-channel, low-pressure, small-diameter pneumatic testing fixture according to claim 1, characterized in that: The limiting structure includes a limiting groove (13) and a limiting block (14). The limiting groove (13) is located below the interior of the positioning block (6). The limiting block (14) is provided inside the limiting groove (13). The top end of the limiting block (14) is connected to the bottom end of the movable block (8).

3. The multi-channel, low-pressure, small-diameter pneumatic testing fixture according to claim 2, characterized in that: The cross-section of the limiting groove (13) is larger than the cross-section of the limiting block (14), and the limiting groove (13) and the limiting block (14) form a sliding structure.

4. The multi-channel, low-pressure, small-diameter pneumatic testing fixture according to claim 3, characterized in that: A plastic pad (15) is provided on the inner side of the movable block (8), and the plastic pad (15) can protect and clamp the gas pipe (4).

5. The multi-channel, low-pressure, small-diameter pneumatic testing fixture according to claim 1, characterized in that: Multiple gas pipes (4) are provided on the outside of the connecting block (2), and the multiple gas pipes (4) are distributed at equal intervals on the outside of the connecting block (2).

6. The multi-channel, low-pressure, small-diameter pneumatic testing fixture according to claim 1, characterized in that: The locking mechanism includes a sealing ring (16), a ring clamp (17) and a locking block (18). The sealing ring (16) is installed at one end of the connecting block (2). The sealing ring (16) and the connecting pipe (1) are in contact with each other. The outer sides of both ends of the connecting pipe (1) are provided with ring clamps (17), and the outer sides of the ring clamps (17) are provided with locking blocks (18).

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