CN102678399B - Engine air filter blockage reminding device - Google Patents
Engine air filter blockage reminding device Download PDFInfo
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- CN102678399B CN102678399B CN201110442355.2A CN201110442355A CN102678399B CN 102678399 B CN102678399 B CN 102678399B CN 201110442355 A CN201110442355 A CN 201110442355A CN 102678399 B CN102678399 B CN 102678399B
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- push rod
- air filter
- engine air
- reminding device
- pore
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Abstract
The invention relates to an engine air filter blockage reminding device. The engine air filter blockage reminding device solves the problem that at present, after an air filter is blocked, a negative-pressure condition inside an air inlet pipe is unstable, so that an existing alarm device cannot work normally. The engine air filter blockage reminding device comprises a shell, an outer cavity and an inner cavity communicated with an air inlet pipe of an engine are disposed in the shell, and a partition board is arranged between the inner cavity and the outer cavity. The inner cavity is isolated from the outer cavity at an initial position, and the outer cavity is communicated with the external; when the partition board is driven by change of pressure to move to a reminding position, the inner cavity is communicated with the outer cavity, and the outer cavity is isolated from the external. The reminding device is driven to act due to the change of the inner pressure of the air inlet pipe and cannot move along with further change of the inner pressure of the air inlet pipe after the single action, and a reliable reminding signal is provided. In addition, pressure of the outer cavity is converted by means of switching air pressure channels, electronic equipment or other complicated clamping fixing devices are omitted, and the engine air filter blockage reminding device is simple and reliable in structure.
Description
Technical field
The present invention relates to a kind of engine air-intake structure parts, particularly a kind of engine air filter blockage reminding device.
Technical background
The air-strainer of engine air inlet tube uses for a long time and under complex environment, works and easily cause filter core to stop up, and intake resistance increases, and affects air input of engine by air, affects engine power, now needs filter core to clean or change.
There is at present pair engine air filter to stop up the device of pointing out, the patent that the notification number of announcing on January 30th, 2008 as Patent Office of the People's Republic of China is CN201013495Y, name is called a kind of air filter clogging automatic alarm sensor, this device is provided with housing and the switch base bonding together, on two wiring terminals in its switch base, be respectively equipped with the static touching plate communicating with it, in housing, be provided with the sensing mechanism being formed by mandrel, spring seat, spring, air bag and movable touching plate.Spring seat, movable touching plate, air bag and mandrel are an assembly, can endwisely slipping along mandrel.In housing, be also provided with the adjusting nut of adjustable springs pressure.When air-strainer stops up, intake interface can produce negative pressure, inhales the capsule of taking offence and drives movable touching plate to communicate with static touching plate, and two wiring terminals are connected, thereby make external power supply, tutorial light or buzzer work, to point out driver to carry out maintaining to air-strainer.This device adopts electric loop to produce alerting signal, utilize the negative pressure of suction tude as the driving force of movable touching plate conducting, but after air-strainer stops up, the negative pressure of suction tude is not lasting process, may be that a period of time negative pressure is mingled with normal intermittent process of a period of time, now will cause movable touching plate to be beated back and forth in conducting with between disconnecting, cause alarm sound undesired, and easily damage electrical part.
Summary of the invention
After the object of the invention is to stop up for current air-strainer, the unstable problem that causes warning device cisco unity malfunction of negative pressure condition in suction tude, provides a kind of and provide the engine air filter blockage reminding device of stablizing information after air-strainer stops up.
The technical solution adopted for the present invention to solve the technical problems is: a kind of engine air filter blockage reminding device, comprise housing, the inner chamber that is provided with exocoel in housing and is communicated with engine air inlet tube, between inner chamber and exocoel, be provided with dividing plate, between the baffle surface of inner chamber one side and intracavity sidewall, be provided with and hold out against spring, the baffle surface of exocoel one side is embedded with rotatable rotary piece, the same circumference in rotary piece surface is provided with some the first intercommunicating pores, on dividing plate, with circumference is corresponding, be provided with some the second intercommunicating pores with rotary piece, rotary piece center is coaxially provided with push rod, exocoel outer side wall is provided with pore, exocoel is stretched out through pore in push rod outer end, push rod external diameter and air vent aperture match, push rod shaft and pore corresponding part are provided with axial gas guide groove, push rod middle part is provided with the locating column of radial protrusion, in exocoel, be provided with deep trouth and the shallow slot that arrange space on circumference, between deep trouth and shallow slot, also there is guiding surface, when locating column is fastened in deep trouth, the first intercommunicating pore and the second intercommunicating pore mutually stagger on circumference, push rod gas guide groove is communicated with pore both sides, when locating column is fastened in shallow slot, the first intercommunicating pore and the alignment of the second intercommunicating pore, push rod gas guide groove retraction pore inner side and shaft stop up pore.When push rod moves reciprocatingly under pressure, can under the leading role of guiding surface, do and rotate, to-and-fro motion each time, locating column moves once in adjacent slot, falls into shallow slot or falls into deep trouth from shallow slot, thereby drive rotary piece to rotate from deep trouth.During original state, locating column is arranged in deep trouth, and now the first intercommunicating pore staggers with the second intercommunicating pore, and inner chamber and exocoel cut off, and gas guide groove is at pore place conducting exocoel and ambient air, when stopping up, air-strainer causes negative pressure in suction tude, the air pressure of inner chamber is less than the air pressure of exocoel, promoting dividing plate inwardly moves, drive push rod inwardly to move, push rod locating column moves along guiding surface, the rotation of drive push rod, when locating column falls into shallow slot, the first intercommunicating pore is communicated with the second intercommunicating pore, and gas guide groove retraction pore is inner, pore is stopped up by shaft, now inner chamber and exocoel are communicated with by intercommunicating pore, and separate with the external world, no matter suction tude internal pressure changes, push rod can not be pushed, this device is now positioned at alert state, when staff changes or clean after filter core, press push rod end and carry out hand reset.
As preferably, in described exocoel, be provided with sleeve, jacket casing is located at push rod outside, and deep trouth, shallow slot and guiding surface are arranged on the inwall of sleeve.Compare with exocoel internal diameter, sleeve diameter can only be a bit larger tham push rod, and locating column is at every turn less at circumference up stroke.
As preferably, described sleeve adopts gusset to be fixed on outer cavity wall.As other scheme, end that also can sleeve is fixed on the inner wall of end of exocoel.
As preferably, described deep trouth and shallow slot opening side are towards dividing plate direction.Dividing plate is holding out against under spring action, the locating column of push rod can be held out against and is positioned at bottom land.
As preferably, described guiding surface comprises the guide surface of the inclination that connects adjacent notch and the flank of tooth being oppositely arranged with notch, and the tooth top of the flank of tooth aligns with notch, align with guide surface at the bottom of tooth.The locating column of take moves to shallow slot course of action from deep trouth is example, dividing plate inner side produces negative pressure and causes moving in dividing plate, drive in push rod and move, locating column inwardly moves with push rod, knock a side of flank of tooth tooth top, in continuing inside movement process, position turn to tooth under flank of tooth leading role at the bottom of, now push rod rotates with locating column, drive rotary piece to rotate simultaneously, the first intercommunicating pore is with the second intercommunicating pore section aligned conducting, dividing plate pressure at both sides balance, outwards move holding out against spring action lower clapboard, locating column is owing to having made certain rotation offset on the flank of tooth, during return, drop on the guide surface of inclination, along guide surface, slide to continue to be offset and fall into shallow slot, and in migration process, drive push rod to be rotated further, while falling into shallow slot, the first intercommunicating pore is with the second intercommunicating pore complete matching.And the course of action that locating column moves to deep trouth from shallow slot adopts hand reset, the motion mode of locating column is with above-mentioned consistent, and after reset, the first intercommunicating pore staggers with the second intercommunicating pore.
As preferably, between described diaphragm rings week and inner walls, by axially extended gib block and guide groove, be slidably matched.Dividing plate by gib block and guide groove engagement limits rotation, the second intercommunicating pore position is remained stablize motionless.
As preferably, in the middle part of described push rod, be provided with indicative mark, housing is provided with for observing the window of indicative mark.When push rod is subject to air pressure to drive to inside contract, enter alert state, window aligns with sign, is convenient to judge.
As preferably, the inner side surface of rotary piece and dividing plate laminating.
The present invention utilizes suction tude internal pressure to change and drives alarm set action, and can with suction tude internal pressure, not change again and change again after one-off, and reliable alerting signal is provided; Utilize the switching of pressure channel to realize the pressure conversion of exocoel, without by electronic equipment or other complicated fastening devices, simple and reliable for structure.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of original state of the present invention.
Fig. 2 is the A-A view of Fig. 1 of the present invention.
Fig. 3 is the partial enlarged drawing at B place in Fig. 1 of the present invention.
Fig. 4 is the structural representation of alert state of the present invention.
Fig. 5 is C-C view in Fig. 4 of the present invention.
In figure: 1. engine air inlet tube, 2. through hole, 3. holds out against spring, 4. dividing plate, 5. gib block, 6. the second intercommunicating pore, 7. the first intercommunicating pore, 8. push rod, 9. rotary piece, 10. gusset, 11. sleeves, 12. gas guide grooves, 13. locating columns, 14. shallow slots, 15. deep trouths, 16. flank of tooth, 17. guide surfaces, 18. windows, 19. housings, 20. inner chambers, 21. exocoels, 22. pores.
Embodiment
Below by specific embodiment, also the present invention is further described by reference to the accompanying drawings.
Embodiment: a kind of engine air filter blockage reminding device, as shown in Figure 1 and Figure 2.This device comprises columniform housing 19, housing 19 inside are separated into inner chamber 20 and exocoel 21 by dividing plate 4, inner chamber 20 chamber walls are provided with some through holes 2, inner chamber 20 is communicated with by through hole 2 with engine air inlet tube 1. and between the inner side surface of dividing plate 4 and inner chamber 20 ends, be provided with and hold out against spring 3, housing 19 inwalls are provided with three axially directed 5, and dividing plate 4 circumference are provided with the guide groove matching with gib block 5.The outer side surface of dividing plate 4 is connected with push rod 8, the inner of push rod 8 is provided with rotary piece 9, rotary piece 9 is rotatably embedded and on the surface of dividing plate 4, keeps rotary piece 9 and dividing plate laminating, dividing plate 4 outer surfaces are provided with flange and fasten rotary piece, avoid dividing plate and rotary piece to depart from, the surperficial same circumference of rotary piece 9 is provided with some the first intercommunicating pores 7, on dividing plate 4, with circumference is corresponding, be provided with some the second intercommunicating pores 6 with rotary piece, when alarm set is positioned at original state, the first intercommunicating pore 7 and the second intercommunicating pore 6 stagger mutually as shown in Figure 1 and Figure 2.Stretch out through the pore 22 of exocoel 21 end walls the outer end of push rod, and on the shaft of push rod 8 and pore 22 cooperation places, be axially arranged with and be communicated with exocoel 21 and extraneous gas guide groove 12, and push rod 8 external diameters are consistent with pore 22 apertures.The sidewall of exocoel 21 is provided with the window 18 for observing, and window 18 outermost are alignd with gas guide groove the inner, paints redness as cue mark in gas guide groove 12, and under original state, window 18 staggers with cue mark.
As Fig. 1, shown in Fig. 3, the middle part of push rod 8 is evenly provided with locating column 13 on shaft ring week, the middle part of exocoel 21 is provided with the sleeve 11 being set in outside push rod, sleeve 11 is fixed on the wall of chamber by gusset 10, on the inwall ring week of sleeve 11, be arranged alternately deep trouth 15 and shallow slot 14, adjacent notch is by connecting along the identical guide surface 17 of circumference true dip direction, notch opening is towards dividing plate 4 directions, on sleeve 11 inwalls relative with notch, be also provided with the flank of tooth 16, the tooth top of the flank of tooth 16 aligns with bottom land, at the bottom of tooth, align with guide surface 17, and aligned position turns to the lateral deviation that enters of bottom land and guide surface 17 respectively.
When air-strainer stops up, the interior generation negative pressure of engine air inlet tube 1, inner chamber 20 internal air pressures are less than exocoel 21 air pressure, in dividing plate 4 and push rod 8, move, locating column 13 inwardly moves with push rod 8, disengaging deep trouth 15 knocks a side of the flank of tooth 16 tooth tops, in continuing inside movement process, position turn to tooth under the flank of tooth 16 leading roles at the bottom of, now push rod 8 rotates with locating column 13, drive rotary piece 9 to rotate simultaneously, the first intercommunicating pore 7 is with the conducting that partly overlaps of the second intercommunicating pore 6, dividing plate 4 pressure at both sides balances, outwards move holding out against spring 3 effect lower clapboards 4, locating column 13 is owing to having made certain rotation offset on the flank of tooth 16, during return, drop on the guide surface 17 of inclination, along guide surface slip, continue rotation offset and fall into shallow slot 14, and in migration process, drive push rod 8 to be rotated further, while falling into shallow slot 14, the first intercommunicating pore 7 is completely overlapping with the second intercommunicating pore 6, enter alert state, as shown in Figure 4 and Figure 5, now the first intercommunicating pore 7 makes inner chamber 20 and exocoel 21 pressure balances with the second intercommunicating pore 6 alignment, and gas guide groove 12 retraction pore 22 inner sides, push rod 8 shafts are blocked the isolated exocoel 21 of pore 22 and the external world, within the indicative mark of gas guide groove 12 falls into window 18 range of observation, now due to dividing plate pressure at both sides balance, no matter how suction press changes, alarm set can not automatically reset, need staff to change or clean after filter core, press push rod and carry out hand reset, in reseting procedure, locating column enters deep trouth from shallow slot, and rotary piece rotates, the first intercommunicating pore staggers with the second intercommunicating pore separation, gas guide groove is communicated with exocoel and the external world again.
Claims (8)
1. an engine air filter blockage reminding device, comprise housing, the inner chamber that is provided with exocoel in housing and is communicated with engine air inlet tube, it is characterized in that: between inner chamber and exocoel, be provided with dividing plate, between the baffle surface of inner chamber one side and intracavity sidewall, be provided with and hold out against spring, the baffle surface of exocoel one side is embedded with rotatable rotary piece, the same circumference in rotary piece surface is provided with some the first intercommunicating pores, on dividing plate, with circumference is corresponding, be provided with some the second intercommunicating pores with rotary piece, rotary piece center is coaxially provided with push rod, exocoel outer side wall is provided with pore, exocoel is stretched out through pore in push rod outer end, push rod external diameter and air vent aperture match, push rod shaft and pore corresponding part are provided with axial gas guide groove, push rod middle part is provided with the locating column of radial protrusion, in exocoel, be provided with deep trouth and the shallow slot that arrange space on circumference, between deep trouth and shallow slot, also there is guiding surface, when locating column is fastened in deep trouth, the first intercommunicating pore and the second intercommunicating pore mutually stagger on circumference, push rod gas guide groove is communicated with pore both sides, when locating column is fastened in shallow slot, the first intercommunicating pore and the alignment of the second intercommunicating pore, push rod gas guide groove retraction pore inner side and shaft stop up pore.
2. engine air filter blockage reminding device according to claim 1, is characterized in that: in described exocoel, be provided with sleeve, jacket casing is located at push rod outside, and deep trouth, shallow slot and guiding surface are arranged on the inwall of sleeve.
3. engine air filter blockage reminding device according to claim 2, is characterized in that: described sleeve adopts gusset to be fixed on outer cavity wall.
4. according to the engine air filter blockage reminding device described in claim 1 or 2 or 3, it is characterized in that: described deep trouth and shallow slot opening side are towards dividing plate direction.
5. according to the engine air filter blockage reminding device described in claim 1 or 2 or 3, it is characterized in that: described guiding surface comprises the guide surface of the inclination that connects adjacent notch and the flank of tooth being oppositely arranged with notch, the tooth top of the flank of tooth aligns with notch, align with guide surface at the bottom of tooth.
6. according to the engine air filter blockage reminding device described in claim 1 or 2 or 3, it is characterized in that: between described diaphragm rings week and inner walls, by axially extended gib block and guide groove, be slidably matched.
7. according to the engine air filter blockage reminding device described in claim 1 or 2 or 3, it is characterized in that: described push rod middle part is provided with indicative mark, and housing is provided with for observing the window of indicative mark.
8. according to the engine air filter blockage reminding device described in claim 1 or 2 or 3, it is characterized in that: the inner side surface of rotary piece and dividing plate laminating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110442355.2A CN102678399B (en) | 2011-12-27 | 2011-12-27 | Engine air filter blockage reminding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110442355.2A CN102678399B (en) | 2011-12-27 | 2011-12-27 | Engine air filter blockage reminding device |
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| Publication Number | Publication Date |
|---|---|
| CN102678399A CN102678399A (en) | 2012-09-19 |
| CN102678399B true CN102678399B (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110442355.2A Active CN102678399B (en) | 2011-12-27 | 2011-12-27 | Engine air filter blockage reminding device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738546B (en) * | 2020-05-29 | 2022-07-15 | 北汽福田汽车股份有限公司 | Air filter blockage alarm triggering device, alarm system, engine and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688511A (en) * | 1984-08-01 | 1987-08-25 | Filterwerk Mann & Hummel Gmbh | Dirt accumulation indicator for air intake filters |
| US5681988A (en) * | 1994-08-23 | 1997-10-28 | Filterwerk Mann & Hummel Gmbh | Apparatus for indicating the degree of dirtiness of a filter |
| CN201013495Y (en) * | 2007-02-12 | 2008-01-30 | 陈步高 | Air filter clogging automatic alarm sensor |
| CN202017562U (en) * | 2011-04-19 | 2011-10-26 | 杨银元 | Self-reminding air filter |
| CN202391613U (en) * | 2011-12-27 | 2012-08-22 | 浙江省海洋开发研究院 | Blockage reminding device of air filter of engine |
-
2011
- 2011-12-27 CN CN201110442355.2A patent/CN102678399B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688511A (en) * | 1984-08-01 | 1987-08-25 | Filterwerk Mann & Hummel Gmbh | Dirt accumulation indicator for air intake filters |
| US5681988A (en) * | 1994-08-23 | 1997-10-28 | Filterwerk Mann & Hummel Gmbh | Apparatus for indicating the degree of dirtiness of a filter |
| CN201013495Y (en) * | 2007-02-12 | 2008-01-30 | 陈步高 | Air filter clogging automatic alarm sensor |
| CN202017562U (en) * | 2011-04-19 | 2011-10-26 | 杨银元 | Self-reminding air filter |
| CN202391613U (en) * | 2011-12-27 | 2012-08-22 | 浙江省海洋开发研究院 | Blockage reminding device of air filter of engine |
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| CN102678399A (en) | 2012-09-19 |
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Application publication date: 20120919 Assignee: Zhejiang Qiaoba Technology Co.,Ltd. Assignor: ZHEJIANG MARINE DEVELOPMENT Research Institute Contract record no.: X2023980042434 Denomination of invention: Engine air filter blockage reminder device Granted publication date: 20140226 License type: Common License Record date: 20230925 |
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