High-precision explosion-proof temperature, humidity and atmospheric pressure sensor

Abstract

The utility model discloses a high-precision explosion-proof temperature, humidity and atmospheric pressure sensor, which comprises an SUS316L powder metallurgy lower shell, a functional PCB is arranged in the SUS316L powder metallurgy lower shell, a supporting PCB is welded on the surface of the functional PCB, one end of the SUS316L powder metallurgy lower shell is detachably connected with a stainless steel joint, and the other end of the SUS316L powder metallurgy lower shell is detachably connected with a temperature sensor. Two groups of M2 screws are jointly in threaded connection between the stainless steel connector and the functional PCB, and a rubber sleeve is detachably connected to the interior of one end of the stainless steel connector. And an extension plate can better protect the end part of the device, when the device falls off, the extension plate can be buffered by using a spring ejector rod, and when the device is used, the extension plate is moved away towards one side, so that the effect of effectively preventing the device from being damaged due to falling off is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of atmospheric pressure sensor technology, and specifically relates to a high-precision explosion-proof temperature and humidity atmospheric pressure sensor. Background Technology

[0002] Atmospheric pressure sensors are devices used to measure atmospheric pressure. They typically operate based on principles such as piezoresistive and capacitive effects, converting changes in atmospheric pressure into electrical signals. They are characterized by high accuracy, strong stability, and fast response. Their main applications are in meteorology for weather forecasting; aerospace for flight control; automotive for engine intake control; and industrial processes requiring precise pressure measurement, as well as handheld devices such as mountaineering watches.

[0003] Currently, there are relatively few industrial-grade temperature, humidity, and atmospheric pressure measurement modules on the market. Most of them have plastic shells, are not explosion-proof, and cannot be used in complex environments such as high-temperature dusty environments or humid and corrosive environments. Utility Model Content

[0004] The purpose of this utility model is to provide a high-precision explosion-proof temperature, humidity and atmospheric pressure sensor. Its advantages are that the design is small in size, high in accuracy, easy and reliable to fix. The shell is made of SUS316L powder metallurgy and SUS304. The manufacturing process uses processes such as glue sealing, which not only meets the explosion-proof requirements, but also filters dust and oil and resists corrosion. It can be used for a long time in high-temperature dusty environment or humid and corrosive environment.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-precision explosion-proof temperature, humidity and atmospheric pressure sensor, including a SUS316L powder metallurgy lower shell, a functional PCB is provided inside the SUS316L powder metallurgy lower shell, a supporting PCB is soldered to the surface of the functional PCB, a stainless steel connector is detachably connected to one end of the SUS316L powder metallurgy lower shell, two sets of M2 screws are threadedly connected between the stainless steel connector and the functional PCB, and a rubber sleeve is detachably connected inside one end of the stainless steel connector.

[0006] The above technical solution is adopted: 1. As Figure Nine The main body shown consists of a stainless steel connector and a SUS316L powder metallurgy lower shell. A rubber sleeve is inserted into the stainless steel connector to protect the wires. The PCBA consists of a support PCB and a functional PCB, which are locked to the stainless steel connector by M2 screws.

[0007] 2. For example Figure Seven , Figure Eight and Figure TenThe explosion-proof function shown mainly relies on sufficient thickness of the SUS316L powder metallurgy lower shell and a small gap, sufficient length of a rubber sealing threaded connection of a stainless steel joint, and a thick filling layer inside the stainless steel joint to meet;

[0008] 3. The lower shell shown in Figure Seven , Figure Eight and Figure Ten is made of SUS316L powder metallurgy material, the gap is 60-90 microns, and under the condition of meeting the ventilation, it can effectively filter and has very strong corrosion resistance, and can resist acid and alkaline water vapor corrosion.

[0009] 4. The PCBA of the module shown in Figure Four , Figure Five and Figure Six has an opening in the support PCB, and a solder pad is reserved, the functional PCB also has a connection solder pad, and the side is also slotted, the slot width is the thickness of the support PCB; during assembly, the support PCB is inserted into the side slot of the functional PCB to form a mortise and tenon structure, and then soldered and fixed on the solder pad to ensure the cross-shaped PCBA assembly precision and foolproofness.

[0010] 5. The functional PCB of the PCBA of the module shown in Figure Four , Figure Five and Figure Six has a ventilation slot around the temperature and humidity atmospheric pressure detection chip, and the slot is opened to ensure the solder pad; this structure reduces the influence of the blocked air flow on the measurement accuracy.

[0011] The utility model further sets up, the SUS316L powder metallurgy lower shell one end threaded connection has threaded ring, threaded ring one side is welded with push rod, threaded ring surface rotation is connected with the swivel.

[0012] Adopt the above technical scheme: the threaded ring rotates in the swivel, and is connected to the surface of the SUS316L powder metallurgy lower shell.

[0013] The utility model further sets up, the swivel surface is welded with four groups of sliding plates, and the one end of the sliding plate one side is provided with recess.

[0014] Adopt the above technical scheme: the sliding plate is used for sliding of the extension plate, and the recess is used for storage of the inclined block.

[0015] The utility model further sets up, the recess inner wall one side is connected with two groups of telescopic springs through spring fixing piece, and the other end of two groups of telescopic springs is connected with inclined block through spring fixing piece.

[0016] The above technical solution is adopted: the two sides of the inclined block are inclined surfaces, and the surface of the tempered glass is relatively smooth. Therefore, when the inclined block is squeezed from one side by the slider, it will move into the groove.

[0017] The present invention is further configured such that a slider is slidably connected to the surface of the skateboard, and a locking hole is provided on one side of the slider, and the locking hole and the inclined block are detachably connected.

[0018] Using the above technical solution: when the slider continues to move to the appropriate position, the telescopic spring will pop the slider out and lock it into the slot, thus fixing the slider's position.

[0019] The present invention is further configured such that three sets of spring push rods are fixedly connected to one side of the slider, and the piston ends of the three sets of spring push rods are jointly fixedly connected to an extension plate.

[0020] The above technical solution is adopted: when the device falls, the extension plate will use the spring push rod to cushion the impact, thereby reducing the cracking of the solder joints of the functional PCB and the support PCB caused by the vibration of the fall.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. a. such as Figure Nine The main body shown consists of a stainless steel connector and a SUS316L powder metallurgy lower shell. A rubber sleeve is inserted into the stainless steel connector to protect the wires. The PCBA consists of a support PCB4 and a functional PCB5, which are locked to the stainless steel connector by M2 screws.

[0023] b. Figure Seven , Figure Eight and Figure Ten The explosion-proof function shown mainly relies on the sufficient thickness and small gap of the SUS316L powder metallurgy lower shell, the sufficient length of the glue-sealed threaded connection of the stainless steel joint, and the sufficient thickness of the potting layer inside the stainless steel joint.

[0024] c. For example Figure Seven , Figure Eight and Figure Ten The lower shell shown is made of SUS316L powder metallurgy material with a gap of 60~90 micrometers. Under the condition of meeting the requirements of air permeability and ventilation, it can effectively filter and has extremely strong anti-corrosion performance, and can resist acid and alkaline water vapor erosion.

[0025] d. such as Figure Four , Figure Five and Figure SixThe PCBA of the shown module is provided with a gap for supporting the PCB 4 and reserved pads, the functional PCB 5 is also provided with connecting pads, and the side edge is also provided with a slot with a width of the thickness of the supporting PCB 4; during assembly, the supporting PCB 4 is inserted into the slot of the side edge of the functional PCB 5 to form a mortise and tenon structure for fixation, and then soldering is performed on the pads for fixation, so as to ensure the assembly precision and foolproofness of the cross-shaped PCBA.

[0026] e. As shown in Figure Four , Figure Five and Figure Six , the functional PCB 5 of the shown module is provided with a ventilation groove around the temperature and humidity atmospheric pressure detection chip, and the groove is provided with multiple slots for ventilation under the condition of ensuring the pads; this structure reduces the influence of the air flow blockage caused by the width of the PCB on the measurement precision.

[0027] 2, push the push rod can make the threaded ring rotate in the rotating ring, thereby connecting the threaded ring on the surface of the SUSL powder metallurgy lower shell, when using the device, the sliding block on the sliding slide plate is slid, when sliding to the appropriate position, because the two sides of the inclined block are inclined surfaces, and the surface of the tempered glass material is relatively smooth, so when the inclined block is pressed from one side by the sliding block, the inclined block will move to the groove, when the sliding block continues to move to the appropriate position, the extension spring will pop out the sliding block and clamp it in the clamping hole, the position of the sliding block is fixed, at this time, the position of the extension plate is fixed, and the extension plate can better protect the end of the device, when using the device, move the extension plate to one side, which can effectively prevent the device from being damaged due to falling. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the overall structure schematic view of the present application;

[0029] Figure 2 is the threaded ring schematic view of the present application;

[0030] Figure 3 is the extension plate schematic view of the present application;

[0031] Figure 4 is the functional PCB schematic view of the present application;

[0032] Figure 5 is the supporting PCB one side schematic view of the present application;

[0033] Figure 6 is the supporting PCB other side schematic view of the present application;

[0034] Figure 7 is the rubber sleeve schematic view of the present application;

[0035] Figure 8It is the stainless steel joint schematic diagram of the utility model;

[0036] Figure 9 It is the SUS316L powder metallurgy lower shell schematic diagram of the utility model;

[0037] Figure 10 It is the device overhead schematic diagram of the utility model.

[0038] Reference signs: 1, rubber sleeve;2, stainless steel joint;3, M2 screw;4, support PCB;5, functional PCB;6, SUS316L powder metallurgy lower shell;801, rotating ring;802, threaded ring;803, push rod;804, sliding plate;805, groove;806, extension spring;807, inclined block;808, sliding block;809, spring ejector pin;810, extension plate;811, clamping hole. Specific implementation

[0039] The utility model will be further explained in detail in combination with the drawings. Example 1:

[0040] Reference Figures 1-10 A kind of high-precision explosion-proof temperature and humidity atmospheric pressure sensor, including SUS316L powder metallurgy lower shell 6, SUS316L powder metallurgy lower shell 6 inside is provided with functional PCB 5, functional PCB 5 surface is welded with support PCB 4, SUS316L powder metallurgy lower shell 6 one end detachably connected with stainless steel joint 2, stainless steel joint 2 and functional PCB 5 between jointly screw connection has two groups M2 screw 3, stainless steel joint 2 one end inside detachably connected with rubber sleeve 1;

[0041] Use process is briefly described: 1. Figure Nine As shown in the main body is stainless steel joint 2, SUS316L powder metallurgy lower shell 6 composition, rubber sleeve 1 is inserted into stainless steel joint 2 and protects wire rod;PCBA is composed of support PCB 4 and functional PCB 5, is locked on stainless steel joint 2 by M2 screw 3;

[0042] 2. as shown in Figure Seven 、 Figure Eight And Figure Ten Explosion-proof function mainly relies on the thickness of SUS316L powder metallurgy lower shell 6 and small gap, and the length of rubber seal threaded connection of stainless steel joint 2 is enough, and the thick filling layer inside stainless steel joint 2 is enough;

[0043] 3. as shown in Figure Seven 、 Figure Eight And Figure TenThe lower shell shown is made of SUS316L powder metallurgy material, with a gap of 60-90 microns, which can effectively filter and has strong corrosion resistance under the condition of meeting ventilation, and can resist acid and alkaline water vapor corrosion.

[0044] 4. The PCBA of the module shown in Figure Four 、 Figure Five and Figure Six has an opening in the support PCB4 and a reserved pad, and the functional PCB5 also has a connecting pad, and the side is also slotted, with a slot width of the thickness of the support PCB4; during assembly, the support PCB4 is inserted into the side slot of the functional PCB5 to form a mortise and tenon structure for fixation, and then soldered to the pad for fixation, ensuring the assembly accuracy and foolproofness of the cross-shaped PCBA.

[0045] 5. The PCBA of the module shown in Figure Four 、 Figure Five and Figure Six has a ventilation slot around the temperature and humidity atmospheric pressure detection chip, and the pad is opened in multiple slots for ventilation under the condition of ensuring the pad; this structure reduces the influence of the PCB board width blocking air flow on the measurement accuracy. Example 2:

[0046] Referring to Figures 1-3 , the SUS316L powder metallurgy lower shell 6 has a threaded ring 802 threadedly connected at one end, a push rod 803 welded on one side of the threaded ring 802, and a rotating ring 801 rotatably connected to the surface of the threaded ring 802;

[0047] Further, four groups of sliding plates 804 are welded to the surface of the rotating ring 801, and a groove 805 is formed on one side and one end of the sliding plate 804;

[0048] Further, two groups of extension springs 806 are connected to the inner wall of the groove 805 on one side through spring fixing pieces, and the other ends of the two groups of extension springs 806 are connected to inclined blocks 807 through spring fixing pieces;

[0049] Further, a sliding block 808 is slidably connected to the surface of the sliding plate 804, a clamping hole 811 is formed on one side of the sliding block 808, and the clamping hole 811 and the inclined block 807 are detachably connected;

[0050] Further, three groups of spring top rods 809 are fixedly connected to one side of the sliding block 808, and an extension plate 810 is fixedly connected to the piston end of the three groups of spring top rods 809;

[0051] Brief description of use process: pushing the push rod 803 can make the threaded ring 802 rotate inside the rotating ring 801, thereby connecting the threaded ring 802 on the surface of the SUS316L powder metallurgy lower shell 6, when using the device, sliding the sliding block 808 on the surface of the sliding plate 804, when sliding to the appropriate position, because the two sides of the inclined block 807 are inclined surfaces, and the surface of the tempered glass material is relatively smooth, when the inclined block 807 is pressed from one side by the sliding block 808, the inclined block 807 will move into the groove 805, when the sliding block 808 continues to move to the appropriate position, the extension spring 806 will pop out the sliding block 808 and clamp it in the clamping hole 811, thereby fixing the position of the sliding block 808, at this time, the extension plate 810 is fixed in position, and the extension plate 810 can better protect the end of the device, when the device falls, the extension plate 810 will use the spring jack 809 to buffer, when using the device, move the extension plate 810 to one side, so as to effectively prevent the device from being damaged due to falling.

[0052] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. A high-precision explosion-proof temperature and humidity barometric pressure sensor comprising a SUS316L powder metallurgy lower shell (6), characterized in that: The SUS316L powder metallurgy lower shell (6) is internally provided with a functional PCB (5), the surface of the functional PCB (5) is welded with a support PCB (4), one end of the SUS316L powder metallurgy lower shell (6) is detachably connected with a stainless steel joint (2), two groups of M2 screws (3) are jointly screwed between the stainless steel joint (2) and the functional PCB (5), and the inner end of the stainless steel joint (2) is detachably connected with a rubber sleeve (1).

2. The high-precision explosion-proof temperature and humidity barometric pressure sensor according to claim 1, characterized in that: The SUS316L powder metallurgy lower shell (6) is internally provided with a functional PCB (5), the surface of the functional PCB (5) is welded with a support PCB (4), one end of the SUS316L powder metallurgy lower shell (6) is detachably connected with a stainless steel joint (2), two groups of M2 screws (3) are jointly screwed between the stainless steel joint (2) and the functional PCB (5), and the inner end of the stainless steel joint (2) is detachably connected with a rubber sleeve (1).

3. The high-precision explosion-proof temperature and humidity barometric pressure sensor according to claim 2, characterized in that: The surface of the rotating ring (801) is welded with four groups of sliding plates (804), and the recess (805) is formed in one side and one end of the sliding plate (804).

4. The high-precision explosion-proof temperature and humidity barometric pressure sensor according to claim 3, characterized in that: The inner wall of the recess (805) is connected with two groups of telescopic springs (806) through spring fixing members, and the other ends of the two groups of telescopic springs (806) are connected with inclined blocks (807) through spring fixing members.

5. The high-precision explosion-proof temperature and humidity barometric pressure sensor according to claim 4, characterized in that: The surface of the sliding plate (804) is slidably connected with a sliding block (808), the sliding block (808) is provided with a clamping hole (811) on one side, and the clamping hole (811) and the inclined block (807) are detachably connected.

6. The high-precision explosion-proof temperature and humidity barometric pressure sensor according to claim 5, characterized in that: The surface of the sliding block (808) is slidably connected with a sliding block (808), the sliding block (808) is provided with a clamping hole (811) on one side, and the clamping hole (811) and the inclined block (807) are detachably connected. The surface of the sliding block (808) is slidably connected with a sliding block (808), the sliding block (808) is provided with a clamping hole (811) on one side, and the clamping hole (811) and the inclined block (807) are detachably connected.

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