CN210093675U - Ultrathin surface-mounted airflow sensor - Google Patents
Ultrathin surface-mounted airflow sensor Download PDFInfo
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- CN210093675U CN210093675U CN201920572295.8U CN201920572295U CN210093675U CN 210093675 U CN210093675 U CN 210093675U CN 201920572295 U CN201920572295 U CN 201920572295U CN 210093675 U CN210093675 U CN 210093675U
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Abstract
The utility model relates to a sensor technology field discloses an ultra-thin type surface mounting formula airflow sensor includes the casing, the pole piece, the circuit board, the metal pipe body, the diaphragm, first insulator and second insulator, the upper end of casing is equipped with an opening, the lower extreme of casing is equipped with first gas pocket, the upper end opening setting of casing is located to circuit board detachable lid, pole piece detachable sets up the inner wall at first gas pocket, the pole piece is equipped with a plurality of second gas pockets with first gas pocket intercommunication, the circuit board is equipped with the third gas pocket with second gas pocket intercommunication, first insulator sets up between the lower extreme wall of the upper end wall of pole piece and diaphragm, the diaphragm sets up the lower extreme wall at the metal pipe body, the second insulator sets up between the internal perisporium of the periphery wall of metal pipe body and casing, the protruding weld part of being connected with the circuit board electricity that is equipped with in. The technical scheme of the utility model can be through the automatic reflow soldering of chip mounter, and productivity ratio is high, and the equipment is convenient, can simplify the structure of electron cigarette.
Description
Technical Field
The utility model relates to the technical field of sensors, in particular to ultra-thin type surface mounting formula air current sensor.
Background
Reflow soldering is the most commonly used method for bonding electronic components to a printed circuit board using Surface Mount Technology (SMT), and another method is to connect electronic components by through-hole mounting. Through hole insertion is to fill the existing hole in the circuit board with solder paste, insert the pin into the solder paste and embed the electronic component onto the board for soldering. Since wave soldering is relatively inexpensive and simple, reflow soldering is not substantially applied to through-hole mounted circuit boards.
As shown in fig. 1, the interface mode that the area was participated in is adopted mostly to traditional air current sensing device structure for electron cigarette, the air current sensing device of this kind of structure generally need be through manual operation welding, participate in 1 welding of air current sensing device on the jack on the circuit board, because air current sensing device is very little, the pin is also very thin, lead to the not good operation of manual welding, participate in the end welding need very careful when of air current sensing device, the human consumption is big, welding efficiency is low, can't carry out automatic reflow soldering through the chip mounter, be unfavorable for automated production.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an ultra-thin type surface mounting formula air current sensor aims at solving the technical problem that current air current sensor welding efficiency is low.
In order to achieve the above object, the present invention provides an ultra-thin surface-mount airflow sensor, which comprises a housing, a pole piece, a circuit board, a metal tube, a diaphragm, a first insulator and a second insulator, wherein the upper end of the housing is provided with an opening, the lower end of the housing is provided with a first air hole, the circuit board is detachably covered on the upper opening of the housing, the pole piece is detachably disposed on the inner wall of the first air hole, the pole piece is provided with a plurality of second air holes communicated with the first air hole, the circuit board is provided with a third air hole communicated with the second air hole, the first insulator is disposed between the upper end wall of the pole piece and the lower end wall of the diaphragm, the diaphragm is disposed on the lower end wall of the metal tube, the upper end wall of the metal tube is electrically connected with the circuit board, the outer wall of the metal tube is connected with the inner wall of the housing at intervals, the second insulator is arranged between the outer peripheral wall of the metal pipe body and the inner peripheral wall of the shell, the upper end wall of the second insulator is connected with the lower end wall of the circuit board at intervals, and the upper end of the circuit board is convexly provided with a welding part electrically connected with the circuit board.
Optionally, the welding part includes a first welding boss and a second welding boss, and the first welding boss and the second welding boss are connected at an interval.
Optionally, the first welding boss and the second welding boss are both arranged in a circular ring shape, and the circle centers of the first welding boss and the second welding boss are overlapped.
Optionally, the first welding boss is annularly arranged on the peripheral wall of the third air hole, and the peripheral wall of the first welding boss is provided with a through hole.
Optionally, the second welding boss is convexly provided with a welding step which is arc-shaped, and the welding step is symmetrically arranged at two sides of the first welding boss at intervals.
Optionally, the front ends of the welding steps are respectively provided with an arc-shaped concave portion in a concave manner, and the concave portions are connected with the peripheral wall of the first welding boss at intervals.
Optionally, the air vent structure further comprises a dust screen, and the dust screen cover is arranged on the outer end wall of the first air hole.
Optionally, the first insulator and the second insulator are both arranged in a cylindrical shape.
Optionally, the diaphragm, the first insulator and the second insulator are all formed by using a plastic material.
Optionally, the shell, the pole piece, and the metal tube are all formed of a copper alloy.
Adopt the technical scheme of the utility model, following beneficial effect has: the technical scheme of the utility model, it is protruding through setting up first welding boss and second welding, the welding area who has increased airflow sensor has been equivalent to, make very convenient pass through the chip mounter welding on the circuit board, can improve production efficiency, the automatic backward flow welding is realized to the accessible chip mounter, and the welding is reliable, reduce manual operation, the equipment is convenient simultaneously, the constitution subassembly of product has been reduced, the structure of electron cigarette can be simplified, the inlet port aperture is big, the air current detects sensitively, but wide application is used as the air current and detects electronic switch in the electron cigarette.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Figure 1 is a schematic diagram of a conventional airflow sensing device for an e-cigarette;
fig. 2 is a schematic view of an overall structure of an ultra-thin surface-mount airflow sensor according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of an ultra-thin surface-mount airflow sensor according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional exploded view of an ultra-thin surface-mount airflow sensor according to an embodiment of the present invention;
fig. 5 is an external structural view of an ultra-thin surface mount airflow sensor according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a dust screen of an ultra-thin surface-mount airflow sensor according to an embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an ultra-thin type surface mounting formula air current sensor.
As shown in fig. 1 to 6, in an embodiment of the present invention, the ultra-thin surface-mount airflow sensor includes a housing 100, a pole piece 200, a circuit board 300, a metal tube 400, a membrane 500, a first insulator 600, a second insulator 700, and a dust screen 800, an upper end of the housing 100 is provided with an opening 101, a lower end of the housing 100 is provided with a first air hole 102, the circuit board 300 is detachably disposed on the upper end opening 101 of the housing 100, the pole piece 200 is detachably disposed on an inner wall of the first air hole 102, the pole piece 200 is provided with a plurality of second air holes 201 communicating with the first air hole 102, the circuit board 300 is provided with a third air hole 301 communicating with the second air holes 201, the first insulator 600 is disposed between an upper end wall of the pole piece 200 and a lower end wall of the membrane 500, the membrane 500 is disposed on the lower end wall of the metal tube 400, the upper end wall of the metal pipe 400 is electrically connected to the circuit board 300, the outer wall of the metal pipe 400 is connected to the inner wall of the housing 100 at intervals, the second insulator 700 is disposed between the outer circumferential wall of the metal pipe 400 and the inner circumferential wall of the housing 100, the upper end wall of the second insulator 700 is connected to the lower end wall of the circuit board 300 at intervals, and the upper end of the circuit board 300 is convexly provided with a welding portion 302 electrically connected to the circuit board 300.
Specifically, as shown in fig. 2, in the present embodiment, the welding portion 302 includes a first welding boss 3021 and a second welding boss 3022, the first welding boss 3021 is connected to the second welding boss 3022 at an interval, and upper end surfaces of the first welding boss 3021 and the second welding boss 3022 are located at the same horizontal plane, so that the first welding boss 3021 and the second welding boss 3022 can be conveniently placed on a circuit board in a mounting manner for automatic welding.
Specifically, as shown in fig. 2, in this embodiment, the first welding boss 3021 and the second welding boss 3022 are both arranged in a circular ring shape, and the centers of circles of the first welding boss 3021 and the second welding boss 3022 are overlapped, so that the welding area is increased, the reflow soldering is realized, the automatic welding by a chip mounter is possible, and the welding is reliable.
Specifically, as shown in fig. 2, in the present embodiment, the first welding boss 3021 is disposed around the outer peripheral wall of the third air hole, and a through hole 3023 is disposed on the outer peripheral wall of the first welding boss 3021, which can be used as an electrical connection hole to increase the firmness of welding with the circuit board.
Specifically, as shown in fig. 2, in the present embodiment, the second welding boss 3022 is convexly provided with a welding step 3024 having an arc shape, and the welding steps 3024 are symmetrically arranged at two sides of the first welding boss 3021.
Specifically, as shown in fig. 2, in the present embodiment, the front end of the welding step 3024 is recessed with an arc-shaped recess 3025, and the recess 3025 is connected to the outer peripheral wall of the first welding boss 3021 at a distance.
Specifically, as shown in fig. 3 and 4, in this embodiment, the air duct further includes a dust-proof net 800, and the dust-proof net 800 is made of a high-temperature-resistant non-woven fabric dust-proof material and is adhered to the outer end wall of the first air hole 102 through a high-temperature-resistant glue.
Specifically, as shown in fig. 3 and 4, in the present embodiment, the first insulator 600 and the second insulator 700 are both arranged in a cylindrical shape.
Specifically, in this embodiment, the diaphragm 500, the first insulator 600 and the second insulator 700 are made of a high temperature resistant plastic material, and the diaphragm 500 is bonded to the lower end wall of the metal pipe 400 through a high temperature resistant glue.
Specifically, in this embodiment, the casing 100, the pole piece 200 and the metal tube 400 are all formed by copper alloy.
The utility model discloses a theory of operation does: the first welding boss 3021 and the second welding boss 3022 of the airflow sensor are placed on a PCB to be reflow-welded by a mounting manner of a chip mounter, the pole piece 200 is electrically connected with the second welding boss 3022 of the circuit board 300 through the casing 100, the diaphragm 500 is electrically connected with the first welding boss 3021 of the circuit board 300 through the metal tube 400, the diaphragm 500 is electrically connected with the pole piece through the first insulator 600, the pole piece 200, the first insulator 600 and the diaphragm 500 form a parallel plate capacitor, air enters the casing 100 from the first air hole 102 in front of the dust screen 800, when other air is instantly sucked out from the third air hole 301, negative pressure is formed inside the casing 100 to generate a pressure difference in front and back of the diaphragm 500, so that the diaphragm 500 deforms, the capacitance value between the diaphragm 500 and the pole piece 200 changes, and a detectable capacitance change signal is generated for detecting negative pressure airflow, the electronic cigarette atomizer is used as an air flow switch to automatically control the on-off of the electronic cigarette atomizer.
The utility model discloses an air current detects sensitively, and is protruding through setting up first welding boss and second welding, has increased the welding area of air current sensor pin in other words for very conveniently weld on the circuit board through the chip mounter, realize reflow soldering, can improve production efficiency, realize automatic welding, reduce manual operation, and the equipment is convenient simultaneously, has reduced the constitution subassembly of product, but wide application in electron cigarette is as air current detection electronic switch, can simplify the structure of electron cigarette.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. An ultrathin surface-mounted airflow sensor is characterized by comprising a shell, a pole piece, a circuit board, a metal pipe body, a diaphragm, a first insulator and a second insulator, wherein an opening is formed in the upper end of the shell, a first air hole is formed in the lower end of the shell, the circuit board is detachably covered on the upper end opening of the shell, the pole piece is detachably arranged on the inner wall of the first air hole, the pole piece is provided with a plurality of second air holes communicated with the first air hole, the circuit board is provided with a third air hole communicated with the second air hole, the first insulator is arranged between the upper end wall of the pole piece and the lower end wall of the diaphragm, the diaphragm is arranged on the lower end wall of the metal pipe body, the upper end wall of the metal pipe body is electrically connected with the circuit board, the outer wall of the metal pipe body is connected with the inner wall of the shell at intervals, the second insulator is arranged between the outer peripheral wall of the metal pipe body and the inner peripheral wall of the shell, the upper end wall of the second insulator is connected with the lower end wall of the circuit board at intervals, and the upper end of the circuit board is convexly provided with a welding part electrically connected with the circuit board.
2. The ultra-thin type surface-mount airflow sensor according to claim 1, wherein the welding portion comprises a first welding boss and a second welding boss, and the first welding boss and the second welding boss are connected at an interval.
3. The ultra-thin type surface-mounted airflow sensor according to claim 2, wherein the first welding boss and the second welding boss are both arranged in a circular ring shape, and the centers of the first welding boss and the second welding boss are coincident.
4. The ultra-thin surface-mount airflow sensor according to claim 3, wherein the first welding boss is disposed around the outer peripheral wall of the third air hole, and the outer peripheral wall of the first welding boss has a through hole.
5. The ultra-thin surface-mount airflow sensor according to claim 3, wherein the second welding boss is convexly provided with a circular arc-shaped welding step, and the welding steps are symmetrically arranged at two sides of the first welding boss at intervals.
6. The ultra-thin surface-mount airflow sensor according to claim 5, wherein the front end of the welding step is respectively provided with an arc-shaped concave portion in an opposite concave manner, and the concave portions are connected with the outer peripheral wall of the first welding boss at intervals.
7. The ultra-thin surface-mount airflow sensor according to claim 3, further comprising a dust screen, wherein the dust screen cover is disposed on an outer end wall of the first air hole.
8. The ultra-thin surface-mount airflow sensor of claim 1, wherein the first and second insulators are arranged in a cylindrical shape.
9. The ultra-thin surface mount airflow sensor of claim 8 wherein the diaphragm, the first insulator, and the second insulator are formed of a plastic material.
10. The ultra-thin surface-mount airflow sensor of claim 1, wherein the housing, the pole piece, and the metal tube are all formed of copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920572295.8U CN210093675U (en) | 2019-04-24 | 2019-04-24 | Ultrathin surface-mounted airflow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920572295.8U CN210093675U (en) | 2019-04-24 | 2019-04-24 | Ultrathin surface-mounted airflow sensor |
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| Publication Number | Publication Date |
|---|---|
| CN210093675U true CN210093675U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920572295.8U Active CN210093675U (en) | 2019-04-24 | 2019-04-24 | Ultrathin surface-mounted airflow sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951958A (en) * | 2019-04-24 | 2019-06-28 | 深圳市众合智联科技有限公司 | Ultrathin surface-mount formula gas flow transducer |
| WO2022247074A1 (en) * | 2021-05-25 | 2022-12-01 | 黄高东 | Electronic cigarette air pressure sensor and electronic cigarette |
-
2019
- 2019-04-24 CN CN201920572295.8U patent/CN210093675U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951958A (en) * | 2019-04-24 | 2019-06-28 | 深圳市众合智联科技有限公司 | Ultrathin surface-mount formula gas flow transducer |
| CN109951958B (en) * | 2019-04-24 | 2024-03-22 | 深圳市众合智联科技有限公司 | Ultrathin surface-mounted airflow sensor |
| WO2022247074A1 (en) * | 2021-05-25 | 2022-12-01 | 黄高东 | Electronic cigarette air pressure sensor and electronic cigarette |
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