CN114323418A - Multipurpose sensor protector - Google Patents
Multipurpose sensor protector Download PDFInfo
- Publication number
- CN114323418A CN114323418A CN202111360973.2A CN202111360973A CN114323418A CN 114323418 A CN114323418 A CN 114323418A CN 202111360973 A CN202111360973 A CN 202111360973A CN 114323418 A CN114323418 A CN 114323418A
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- Prior art keywords
- sensor
- protection device
- baffle
- multipurpose
- boss
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- 230000001012 protector Effects 0.000 title claims description 19
- 239000010802 sludge Substances 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 15
- 238000013461 design Methods 0.000 description 7
- 238000005192 partition Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- NRTLIYOWLVMQBO-UHFFFAOYSA-N 5-chloro-1,3-dimethyl-N-(1,1,3-trimethyl-1,3-dihydro-2-benzofuran-4-yl)pyrazole-4-carboxamide Chemical compound C=12C(C)OC(C)(C)C2=CC=CC=1NC(=O)C=1C(C)=NN(C)C=1Cl NRTLIYOWLVMQBO-UHFFFAOYSA-N 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a multi-purpose sensor protection device, and aims to overcome the defects that the protection capability and the arrangement difficulty of sensors used under a chassis, in a wheel cover and other positions with severe environments are poor. The device comprises a sensor assembly, wherein a sensor protection device for protecting a sensor air hole is assembled on the sensor assembly, and a sealed space which can allow gas to pass and prevent sludge from entering is formed after the sensor protection device is assembled on the sensor assembly; the protection device can provide sufficient protection capability at the severe positions of the sensor under the chassis, in the wheel cover and the like, so that the arrangement difficulty of the sensor is solved, the normal working capability of the sensor is obviously improved, and the fault probability and the after-sale maintenance cost are reduced.
Description
Technical Field
The invention relates to the technical field related to a sensor protection device, in particular to a multipurpose sensor protection device.
Background
With the rise of consumption level of people, environmental protection awareness is gradually raised, the national environmental protection policy is tightened, and the emission limit of pollutants for light automobiles and the mandatory standard of the measurement method (sixth stage of China) in GB 18352.6-2016 are jointly issued by the Ministry of environmental protection in 2016 and the State quality inspection Bureau. The limit values of tail gas emission and evaporative emission are greatly tightened, and simultaneously, the requirements of emission in the refueling process, leakage diagnosis of a fuel system and the like are increased, so that challenges are provided for various host factories and component factories.
The fuel steam pipe pressure sensor is one of important components for diagnosing the leakage of the fuel system and plays a role in detecting and feeding back signals to an engine ECU (electronic control unit).
The shell of the steam pressure sensor is generally provided with air holes, a layer of film is covered on the air holes, the air holes act on a PCB (printed circuit board) in the sensor according to pressure difference generated by the difference between a detection port in the sensor and the external atmospheric pressure, and a voltage signal is converted into a pressure signal through calculation and output to an engine ECU (electronic control Unit).
The steam pressure sensor adopted in the leakage diagnosis system of the current national six-gasoline fuel system is likely to be arranged at the position under a chassis, in a wheel cover and other severe environments according to the influence of the arrangement of the whole vehicle and the like, so that the distortion of signal parameters such as output voltage, current and the like is caused, and the whole vehicle controller or an engine management system makes wrong judgment and instructions after receiving wrong signals, so that great potential safety hazards are caused to the related functions of the whole vehicle, even driving and safety. It also causes the cost of after-market maintenance for the customer.
Chinese patent publication No. CN214149678U, bulletin No. 09/07/2021/09/07/filing, entitled film pressure sensor for rubber seal ring pressure test, discloses a film pressure sensor for rubber seal ring pressure test, which comprises a protective cover, a protective shell and a pressure sensor body, wherein the periphery of the protective shell is fixedly provided with a clamping block, the top of the protective shell is movably provided with the protective cover, the bottom of the periphery of the protective cover is fixedly provided with a buckle, the protective shell is internally provided with a moisture-proof layer, the pressure sensor body is movably arranged between the moisture-proof layers in the protective shell, the periphery of the pressure sensor body is fixedly provided with an inserting frame, the top of the pressure sensor body is movably provided with a placing plate, the bottom of the periphery of the placing plate is fixedly provided with an inserting block, the top of the placing plate is fixedly provided with a thread plate, and a limiting rod is movably arranged between the thread plates. The utility model discloses a through being provided with a series of structures and making this device can carry out the centre gripping to rubber seal at the in-process that uses fixedly, can protect the pressure sensor body.
Disclosure of Invention
The invention overcomes the defects of poor protective capability and large arrangement difficulty of the existing sensors used under the chassis, in the wheel cover and other places with severe environments, and provides a multipurpose sensor protective device which can provide sufficient protective capability at the places with severe environments, such as under the chassis, in the wheel cover and the like, so that the arrangement difficulty of the sensors is solved, the normal working capability of the sensors is obviously improved, and the fault probability and the after-sale maintenance cost are reduced.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a multipurpose sensor protector, includes the sensor assembly, is equipped with the sensor protector who is used for protecting the sensor bleeder vent on the sensor assembly, and the sensor protector forms one after the assembly on the sensor assembly and can pass through gaseous, and can prevent the confined space that mud got into. The protection device can provide sufficient protection capability at the severe positions of the sensor under the chassis, in the wheel cover and the like, so that the arrangement difficulty of the sensor is solved, the normal working capability of the sensor is obviously improved, and the fault probability and the after-sale maintenance cost are reduced.
Preferably, the sensor protection device comprises a protection shell body, a plurality of clamping jaws are arranged on the protection shell body, and the clamping jaws are in interference fit with the sensor assembly body after installation. The design of this jack catch structure can make sensor assembly 1 and sensor protector installation back carry on around spacing to make sensor protector installation back fastening more.
Preferably, a groove is formed in the wall body of the protective shell body, a through water leakage hole is formed in the protective shell body, and the groove is communicated with the water leakage hole.
Preferably, an air inlet mud blocking mechanism is arranged in the groove and comprises a stop block, a baffle plate and a boss.
As the preferred, the hole that leaks is the rectangle structure, is equipped with the dog in the hole that leaks, and the boss setting is equipped with a plurality of baffles in the recess on the boss, and the dog can shelter from liquid with the baffle cooperation that is close to in hole one side that leaks.
Preferably, the side wall of the baffle is provided with an air inlet, and when the sensor works normally, air firstly flows to the air inlet through the water leakage hole and then flows to a closed space formed by the water through hole of the sensor and the sensor protection device. The design of this structure can make the protector of sensor, both can allow gaseous two-way circulation, can be with foreign matter filtering such as muddy water again.
As preferred, the baffle is the L shape structure of height step, is equipped with the connecting block between two baffles, and the connecting block is less than the baffle height.
Preferably, the boss is provided with a plurality of bumps, and a cavity matched with the sensor vent hole is formed between the bumps and the side wall of the groove. The design of the lug structure can ensure that the tightness between the sensor assembly and the sensor protection device is better, thereby greatly improving the sealing degree of a closed space formed on the pressure sensor and ensuring that the ventilated membrane of the sensor can more accurately detect the pressure difference generated by the pressure difference between the detection port of the sensor and the external atmospheric pressure.
Compared with the prior art, the invention has the beneficial effects that: the sensor protection device is arranged, and the sensor shell can provide sufficient protection capability at the position where the sensor is in a severe environment, such as under a chassis, in a wheel cover and the like, so that the arrangement difficulty of the sensor is solved, the normal working capability of the sensor is obviously improved, and the fault probability and the after-sale maintenance cost are reduced.
Drawings
FIG. 1 is a schematic view of a multi-purpose sensor guard of the present invention;
FIG. 2 is an isometric view of a sensor assembly and sensor guard combination of the present invention;
FIG. 3 is a schematic structural view of the sensor assembly body of the present invention;
FIG. 4 is a schematic structural view of the sensor guard of the present invention;
FIG. 5 is a schematic view of the gas and liquid flow directions of the sensor guard of the present invention in use;
FIG. 6 is a schematic structural view of a sensor assembly and sensor guard combination of the present invention;
in the figure: sensor assembly 1, sensor bleeder vent 2, sensor protector 3, the installation cavity 4, partition strip 5, mounting hole 6, protective housing body 7, jack catch 8, jack catch one 9, jack catch two 10, recess 11, card strip 12, joint lug 13, spigot surface 14, the hole 15 that leaks, the fender mud mechanism 16 of admitting air, dog 17, baffle 18, boss 19, lug one 20, space 21, space two 22, space three 23, limit baffle 24, seal baffle 25, baffle one 26, baffle two 27, connecting block 28, lug 29, lug two 30, lug three 31.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the content clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, units, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1: a multi-purpose sensor protection device (see attached figures 1-6) comprises a sensor assembly 1, wherein a sensor protection device 3 for protecting a sensor vent hole 2 is assembled on the sensor assembly 1, a thin film is covered on the sensor vent hole 2 and is used for detecting a pressure difference generated by a sensor detection port and the external atmospheric pressure, and the sensor protection device 3 is assembled on the sensor assembly 1 to form a sealed space which can pass through gas and prevent sludge from entering; be equipped with installation cavity 4 on the sensor assembly 1, installation cavity 4 is the rectangle structure, and intermediate position department in installation cavity 4 is equipped with partition strip 5, and partition strip 5 equally divides installation cavity 4 into two, and partition strip 5 highly is less than 4 lateral walls of installation cavity, and sensor bleeder vent 2 sets up in 4 diapalls of installation cavity, is equipped with mounting hole 6 on the sensor assembly 1, can be used to install under the chassis, in the wheel casing etc.. The protection device can provide sufficient protection capability at the severe positions of the sensor under the chassis, in the wheel cover and the like, so that the arrangement difficulty of the sensor is solved, the normal working capability of the sensor is obviously improved, and the fault probability and the after-sale maintenance cost are reduced.
Sensor protector 3 includes protective housing body 7, is equipped with a plurality of jack catchs 8 on the protective housing body 7, and jack catch 8 has threely, and jack catch 8 includes jack catch one 9 and jack catch two 10, interference fit behind jack catch 8 and the installation of sensor assembly 1 body. The sensor protection device 3 and the sensor assembly 1 are conveniently clamped and fixed. The design of this jack catch structure can make sensor assembly 1 and sensor protector installation back carry on around spacing to make sensor protector installation back fastening more.
The wall body of the protective shell body 7 is internally provided with a groove 11, the side wall of the groove 11 is provided with a first clamping jaw 9, the wall body of the protective shell far away from the side of the first clamping jaw 9 is provided with two symmetrical clamping jaws 10, each clamping jaw 8 comprises a clamping strip 12, the clamping strips 12 of the symmetrical clamping jaws 10 are arranged in parallel, the end parts of the clamping strips 12 are provided with clamping convex blocks 13, the end faces of the clamping convex blocks 13 are provided with guide surfaces 14 which are obliquely arranged, the protective shell body 7 is provided with through water leakage holes 15, and the groove 11 is communicated with the water leakage holes 15.
An air inlet mud blocking mechanism 16 is arranged in the groove 11, and the air inlet mud blocking mechanism 16 comprises a stop block 17, a baffle plate 18 and a boss 19.
The hole 15 that leaks is the rectangle structure, is equipped with dog 17 in the hole 15 that leaks, and boss 19 sets up in recess 11, is equipped with a plurality of baffles 18 on the boss 19, and dog 17 can shelter from liquid with the baffle 18 cooperation that is close to in hole 15 one side that leaks.
The baffle 18 and the boss 19 close to the inner wall of the groove 11 of the first jaw 9 are provided with a first projection 20, a first gap 21 is arranged between the first projection 20 and the inner wall, a second gap 22 is arranged between the first projection 20 and the baffle 18, a third gap 23 is arranged between the baffle 18 and the inner wall close to the second jaw, and when the sensor works normally, gas firstly flows to the second gap and the third gap through the water leakage hole and then flows to a closed space surrounded by the sensor limber hole and the sensor protection device. The design of this structure can make the protector of sensor, both can allow gaseous two-way circulation, can be with foreign matter filtering such as muddy water again.
Baffle 18 includes limit baffle 24 and seal baffle 25, seal baffle 25 including can with 4 diapire contacts of installation cavity baffle 26 to and with two 27 of partition strip contact cooperation baffles, can form the air inlet between two 27 baffles, baffle 26 is the L shape structure of height step after two 27 combinations of baffle, baffle two 27 highly are less than baffle 26, are equipped with connecting block 28 between two 26 baffles, connecting block 28 is less than the height of baffle two 27.
The lug bosses 19 are provided with a plurality of lug bosses 29, the lug bosses 29 comprise a first lug boss 20, a second lug boss 30 and a third lug boss 31, the third lug boss 31 is arranged on the first baffle plate 26 and the lug bosses 19 which are far away from one side of the water leakage hole 15, and a combined cavity matched with the air holes 2 of the sensor can be formed between the lug bosses 29 and the side walls of the grooves 11. The design of the lug structure can ensure that the tightness between the sensor assembly and the sensor protection device is better, thereby greatly improving the sealing degree of a closed space formed on the pressure sensor and ensuring that the ventilated membrane of the sensor can more accurately detect the pressure difference generated by the pressure difference between the detection port of the sensor and the external atmospheric pressure.
In the working process, firstly, the sensor shell is installed by the matching installation of a clamping jaw on the sensor protection device and the sensor assembly; the working characteristics of a common sensor are utilized, the structural design of the multipurpose sensor protection device is provided, the sensor assembly which is more beneficial to maintenance and arrangement is realized by adopting lower-cost protection, and the aim of outputting a signal correctly by the sensor is finally realized; and this structure can be solved general sensor air vent and arrange the signal that incorrect output that causes by foreign matter such as muddy water jam easily when abominable position, and then arouse that relevant whole car functional deviation even became invalid scheduling problem.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Claims (8)
1. A multipurpose sensor protection device is characterized by comprising a sensor assembly, wherein the sensor assembly is provided with a sensor protection device used for protecting a sensor air hole, and a sealed space which can pass through gas and prevent sludge from entering is formed after the sensor protection device is assembled on the sensor assembly.
2. The multipurpose sensor protector of claim 1, wherein the sensor protector includes a protective shell body, the protective shell body having a plurality of fingers that are interference fit with the sensor assembly body when the sensor assembly body is installed.
3. The multipurpose sensor protector of claim 1, wherein the protective shell body has a groove in a wall thereof, the protective shell body having a water leakage hole therethrough, the groove communicating with the water leakage hole.
4. The multipurpose sensor protector according to claim 3, wherein the recess is provided with an air inlet mud guard mechanism, and the air inlet mud guard mechanism comprises a stop, a baffle plate and a boss.
5. The multipurpose sensor protector according to claim 4, wherein the water leakage hole is rectangular, a stopper is disposed in the water leakage hole, the boss is disposed in the groove, and a plurality of baffles are disposed on the boss, and the stopper cooperates with the baffle adjacent to one side of the water leakage hole to block the liquid.
6. A multi-purpose sensor guard according to any one of claims 4 or 5 wherein the side walls of the shield include gas inlets, whereby during normal operation of the sensor, gas passes from the drain holes to the gas inlets to the closed space defined by the sensor water holes and the sensor guard.
7. The multipurpose sensor protector according to claim 5, wherein the baffle is an L-shaped structure with high and low steps, and a connecting block is arranged between the two baffles and is lower than the height of the baffle.
8. A multi-purpose sensor guard according to claim 5 wherein the boss is provided with a plurality of projections which engage the side walls of the recess to define cavities therebetween which engage the sensor vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111360973.2A CN114323418B (en) | 2021-11-17 | 2021-11-17 | Multipurpose sensor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111360973.2A CN114323418B (en) | 2021-11-17 | 2021-11-17 | Multipurpose sensor protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114323418A true CN114323418A (en) | 2022-04-12 |
| CN114323418B CN114323418B (en) | 2024-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111360973.2A Active CN114323418B (en) | 2021-11-17 | 2021-11-17 | Multipurpose sensor protector |
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2021
- 2021-11-17 CN CN202111360973.2A patent/CN114323418B/en active Active
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| CN114323418B (en) | 2024-10-18 |
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