A precision pneumatic measurement micro-miniature sensor

Abstract

The present invention provides a precision pneumatic measurement micro-miniature sensor, which includes a sensor, an air inlet, an air inlet pipe, an exhaust and an avoidance groove. The sensor is fixedly installed in the measurement body through fixing screws. The deformation area and the anvil of the sensor are located above the fixing screws. An air inlet matching the through groove of the measurement body is provided in the lower half of the sensor. An air inlet pipe is arranged in the air inlet, and the anvil is located directly above the air inlet. The present invention can be conveniently installed at any required measurement position and can be arbitrarily interchanged, with low skill operation difficulty; damaged components can be quickly replaced at the use site; the manufacturing requirements and manufacturing risks of the measuring instrument are greatly reduced; it is convenient to realize complex measurement and automatic measurement.

Description

Technical Field

[0001] The present invention mainly relates to the field of pneumatic measurement, and particularly to a precision pneumatic measurement micro-miniature sensor. Background Art

[0002] Currently, there are some restrictive deficiencies in commonly used pneumatic measuring instruments. When using direct injection measurement with a nozzle, different measurement results (i.e., not in line with the true value) will be obtained due to different surface roughnesses of the measured object.

[0003] To solve this problem, a measuring finger structure is adopted. Although it is in line with the true value, both of them require highly skilled personnel to continuously grind during manufacturing to achieve the expected accuracy. The manufacturing risk is large, it is time-consuming and laborious with low efficiency, and the measuring fingers have no interchangeability. After being worn or damaged at the use site, they cannot be repaired on-site and must be returned to the original factory for repair or remanufacture as a whole. Moreover, because the linearity of each measuring point cannot be made completely consistent in these two structural methods, they cannot be applied in some complex measurements (such as coaxiality and position degree) and automated measurements.

[0004] The Chinese utility model patent has been publicly disclosed, with the application number CN201420597158.7, the patent name: A Micro Pneumatic Measuring Instrument, and the application date: October 16, 2014. The present invention relates to a micro pneumatic measuring instrument, belonging to a measuring device; aiming to provide a pneumatic measuring device with a simple gas path and stable measurement data. It includes a housing provided with a gas path system, an air pump and a measuring head communicated with the housing; the housing is composed of a base (3) and a cover plate (13), the gas path system is composed of an air inlet passage (4) and an air outlet passage (7) provided in the housing, a throttle valve (6) connecting the two air passages, a buffer air chamber (11) and a pressure measuring air chamber (12) provided on the cover plate. The buffer air chamber (11) and the air inlet passage (4) are respectively communicated with the pressure measuring air chamber (12), and the air outlet passage (7) is communicated with the buffer air chamber (11); there is a pressure sensor (5) in the pressure measuring air chamber (12), the air pump (1) is communicated with the air inlet passage (4), and the measuring head (8) is communicated with the air outlet passage (7). The present invention has strong anti-interference ability, simple structure and high measurement accuracy; it is a non-contact precision measuring device. Summary of the Invention

[0005] The present invention provides a precision pneumatic measurement micro-miniature sensor. Aiming at the above-mentioned defects of the prior art, a precision pneumatic measurement micro-miniature sensor is provided, including a sensor 1, an air inlet 2, an air inlet pipe 3, an exhaust and avoidance groove 4. The sensor 1 is fixedly installed in a measurement body 6 through a fixing screw 5. The deformation area 7 and the anvil 8 of the sensor 1 are located above the fixing screw 5.

[0006] The lower half of the sensor 1 is provided with an air inlet 2 matching the through groove of the measurement body 6. An air inlet pipe 3 is arranged in the air inlet, and the anvil 8 is located directly above the air inlet 2.

[0007] Preferably, the air inlet 2 is arranged on the side or bottom surface of the sensor 1, and the through groove of the measuring body 6 corresponding to the air inlet 2 is also arranged at the corresponding position.

[0008] Preferably, a sealing ring 9 is arranged at the connection between the air inlet 2 arranged at the bottom of the sensor 1 and the measuring body 6.

[0009] Preferably, the exhaust and relief grooves 4 are arranged on both sides of the sensor 1 and have a gap with the measuring body 6.

[0010] Preferably, a plurality of fixing screws 5 are arranged in parallel.

[0011] Preferably, a groove for installing the fixing screw 5 is arranged inside the sensor 1.

[0012] Preferably, the outer diameter of the intake pipe 3 is the same as the inner diameter of the air inlet 2.

[0013] Advantages of the present invention:

[0014] (1) It can be conveniently installed at any required measuring position and can be arbitrarily interchanged, and the skill operation difficulty is low;

[0015] (2) Damaged components can be quickly replaced at the use site;

[0016] (3) The manufacturing requirements and manufacturing risks of the measuring instrument are greatly reduced;

[0017] (4) It is convenient to realize complex measurement and automatic measurement. Description of the Drawings

[0018] Figure 1 It is the front view structure diagram of the side air inlet mode in the present invention;

[0019] Figure 2 It is the left view structure diagram of the side air inlet mode in the present invention;

[0020] Figure 3 It is the front view structure diagram of the lower air inlet mode in the present invention;

[0021] Figure 4 It is the left view structure diagram of the lower air inlet mode in the present invention;

[0022] In the figure,

[0023] 1, sensor; 2, air inlet; 3, intake pipe; 4, exhaust and relief groove; 5, fixing screw; 6, measuring body; 7, deformation zone; 8, anvil; 9, sealing ring. Detailed Embodiment

[0024] Such as Figures 1-4As can be seen, the present invention provides two embodiments. Embodiment 1 is the side air intake mode, and Embodiment 2 is the bottom air intake mode.

[0025] Embodiment 1:

[0026] This solution includes: sensor 1, air inlet 2, intake pipe 3, exhaust and relief groove 4. The sensor 1 is fixedly installed in the measuring body 6 through fixing screws 5. The deformation area 7 and anvil 8 of the sensor 1 are located above the fixing screws 5.

[0027] The lower half of the sensor 1 is provided with an air inlet 2 that matches the through groove of the measuring body 6. An intake pipe 3 is arranged in the air inlet, and the anvil 8 is located directly above the air inlet 2.

[0028] In use, the sensor in this embodiment is a single standard measuring unit. It has been calibrated to the standard linearity during manufacturing. When in use, it can be conveniently installed at any required measuring position like a standard screw and can be arbitrarily interchanged without the need for high-skill operations. Damaged components can be quickly replaced at the use site.

[0029] Its tiny external dimension can be installed at measuring positions where it was impossible to arrange before. Due to its high standard unity, the manufacturing requirements and risks of measuring instruments are greatly reduced. And because each one has been calibrated to the standard linearity during manufacturing, some complex measurements and automatic measurements can also be easily realized.

[0030] Preferably in this embodiment, the air inlet 2 is arranged on the side of the sensor 1, and the through groove of the measuring body 6 corresponding to the air inlet 2 is also arranged at the corresponding position.

[0031] Setting the above structure does not limit the position of the air inlet 2 on the sensor 1, improving the adaptability of measurement and being applicable to various occasions.

[0032] Preferably in this embodiment, a sealing ring 9 is arranged at the connection between the air inlet 2 arranged at the bottom of the sensor 1 and the measuring body 6.

[0033] Setting the above structure uses the sealing ring 9 to ensure the sealing between the sensor 1 and the measuring body 6, avoiding gas leakage and ensuring the measurement effect.

[0034] Preferably in this embodiment, the exhaust and relief groove 4 is arranged on both sides of the sensor 1 and has a gap with the measuring body 6.

[0035] Setting the above structure ensures a certain distance between the exhaust and relief groove 4 and the sensor 1, which can effectively dissipate heat and will not affect the measurement effect.

[0036] Preferably in this embodiment, a plurality of fixing screws 5 are arranged in parallel.

[0037] With the above structure set up, by using multiple fixing screws 5, it is ensured that the sensor 1 is firmly installed in the measuring body 6, improving stability.

[0038] Preferably in this embodiment, a groove for installing the fixing screw 5 is provided inside the sensor 1.

[0039] With the above structure set up, the installation position of the fixing screw 5 is provided, facilitating quick positioning and improving work efficiency.

[0040] Preferably in this embodiment, the outer diameter of the intake pipe 3 is the same as the inner diameter of the intake port 2.

[0041] With the above structure set up, the just-tangent structure can effectively avoid air leakage and improve measurement accuracy.

[0042] Embodiment 2:

[0043] The difference between this solution and Embodiment 1 is that the intake port 2 is arranged on the bottom surface of the sensor 1, and the through groove of the measuring body 6 corresponding to the intake port 2 is also arranged at the corresponding position.

[0044] With the above structure set up, it is not limited to the position of the intake port 2 on the sensor 1, improving the adaptability of measurement and being applicable to various occasions.

[0045] The above embodiments only illustratively explain the principles and effects of this patent application, rather than being used to limit this patent application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of this patent application. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in this patent application should still be covered by the claims of this patent application.

Claims

1. A precision pneumatic measurement micro-miniature sensor, characterized in that, It includes a sensor (1), an air inlet (2), an air inlet pipe (3), an exhaust and relief groove (4). The sensor (1) is fixedly installed in a measuring body (6) by fixing screws (5). The deformation area (7) and the anvil (8) of the sensor (1) are located above the fixing screws (5). An air inlet (2) matching the through groove of the measuring body (6) is arranged on the lower half of the sensor (1). An air inlet pipe (3) is arranged in the air inlet. The anvil (8) is located directly above the air inlet (2). The air inlet (2) is arranged on the side or bottom of the sensor (1), and the through groove of the measuring body (6) corresponding to the air inlet (2) is also arranged at the corresponding position. A sealing ring (9) is arranged at the connection between the air inlet (2) arranged at the bottom of the sensor (1) and the measuring body (6). The exhaust and relief groove (4) is arranged on both sides of the sensor (1) and has a gap with the measuring body (6). A plurality of the fixing screws (5) are arranged in parallel. A groove for installing the fixing screws (5) is arranged in the sensor (1). The outer diameter of the air inlet pipe (3) is the same as the inner diameter of the air inlet (2).

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