CN102678399A - Engine air filter blockage reminding device - Google Patents
Engine air filter blockage reminding device Download PDFInfo
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- CN102678399A CN102678399A CN2011104423552A CN201110442355A CN102678399A CN 102678399 A CN102678399 A CN 102678399A CN 2011104423552 A CN2011104423552 A CN 2011104423552A CN 201110442355 A CN201110442355 A CN 201110442355A CN 102678399 A CN102678399 A CN 102678399A
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- push rod
- engine air
- pore
- exocoel
- alarm set
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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 stops up alarm set.
Technical background
The air-strainer of engine air inlet tube use for a long time and under complex environment work cause filter core to stop up easily, intake resistance increases, and influences air input of engine by air, influences engine power, need clean or change this moment filter core.
There is pair engine air filter to stop up the device of pointing out at present; Notification number like Patent Office of the People's Republic of China's bulletin on January 30th, 2008 is the patent of CN201013495Y; Name is called a kind of air filter clogging automatic alarm sensor; This device is provided with housing and the switch base that bonds together, and is respectively equipped with the static touching plate that communicates with it on two wiring terminals in its switch base, is provided with the sensing mechanism of being made up of mandrel, spring seat, spring, air bag and movable touching plate in the housing.Spring seat, movable touching plate, air bag and mandrel are an assembly, can endwisely slipping along mandrel.Also be provided with the adjusting nut of adjustable springs pressure in the housing.When air-strainer stops up; Intake interface can produce negative pressure, inhales the capsule drive movable touching plate of taking offence and communicates with static touching plate, and two wiring terminals are connected; Thereby make external power supply, tutorial light or buzzer work, need carry out maintaining to air-strainer with the prompting driver.This device adopts electric loop to produce alerting signal; Utilize the driving force of the negative pressure of suction tude, but after air-strainer stopped up, the negative pressure of suction tude was not lasting process as the movable touching plate conducting; May be that a period of time negative pressure is mingled with normal intermittent process of a period of time; Will cause this moment movable touching plate to be beated back and forth, cause alarm sound undesired, and damage electrical part easily in conducting with between breaking off.
Summary of the invention
The objective of the invention is to after the present air-strainer obstruction; The negative pressure condition instability causes the problem of warning device cisco unity malfunction in the suction tude, provides a kind of engine air filter of stablizing information that after air-strainer stops up, provides to stop up alarm set.
The technical solution adopted for the present invention to solve the technical problems is: a kind of engine air filter stops up alarm set, comprises housing, the inner chamber that is provided with exocoel in the housing and is communicated with engine air inlet tube; Be provided with dividing plate between inner chamber and the exocoel, be provided with between the baffle surface of inner chamber one side and the intracavity sidewall 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 first intercommunicating pores; Be provided with some second intercommunicating pores with rotary piece with circumference is corresponding on the dividing plate, the coaxial push rod that is provided with in rotary piece center, the exocoel outer side wall is provided with pore; The push rod outer end is passed pore and is stretched out exocoel; Push rod external diameter and air vent aperture match, and push rod shaft and pore corresponding part are provided with axial gas guide groove, and the push rod middle part is provided with the locating column of radial protrusion; Be provided with deep trouth and the shallow slot that arrange the space on circumference in the exocoel; Also have guiding surface between deep trouth and the shallow slot, when locating column is fastened in the deep trouth, first intercommunicating pore and second intercommunicating pore stagger on circumference each other, the push rod gas guide groove is communicated with the pore both sides; When locating column is fastened in the shallow slot, first intercommunicating pore and the alignment of second intercommunicating pore, push rod gas guide groove retraction pore inboard and shaft stop up pore.When push rod moves reciprocatingly under pressure, can under the leading role of guiding surface, do rotation, 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 from deep trouth, rotates thereby drive rotary piece.During original state, locating column is arranged in deep trouth, and this moment, first intercommunicating pore staggered with second intercommunicating pore, and promptly inner chamber and exocoel cut off, and gas guide groove is at pore place conducting exocoel and ambient air; Cause negative pressure in the suction tude when air-strainer stops up, the air pressure of inner chamber promotes dividing plate and inwardly moves less than the air pressure of exocoel, drives push rod and inwardly moves; The push rod locating column moves along guiding surface, drives the push rod rotation, and when locating column falls into shallow slot, first intercommunicating pore is communicated with second intercommunicating pore; And gas guide groove retraction pore is inner, and pore is stopped up by shaft, and this moment, inner chamber and exocoel were communicated with through intercommunicating pore; And separate with the external world, no matter the suction tude internal pressure changes, and push rod can not be pushed; This device is positioned at alert state this moment, after the staff changes or cleans filter core, pushes the push rod end and carries out hand reset.
As preferably, be provided with sleeve in the said exocoel, jacket casing is located at the push rod outside, and deep trouth, shallow slot and guiding surface are arranged on the inwall of sleeve.With the exocoel diameter, sleeve diameter can only be a bit larger tham push rod, and locating column is less at the circumference up stroke at every turn.
As preferably, said sleeve adopts gusset to be fixed on the outer cavity wall.As other scheme, end that also can sleeve is fixed on the end inwall of exocoel.
As preferably, said deep trouth and shallow slot opening side are towards the dividing plate direction.Dividing plate is holding out against under the spring action, can the locating column of push rod be held out against and be positioned at bottom land.
As preferably, said guiding surface comprises the guide surface of the inclination that connects adjacent notch and the flank of tooth that is oppositely arranged with notch, and the tooth top of the flank of tooth aligns with notch, align with guide surface at the bottom of the tooth.Is example with locating column from the course of action that deep trouth moves to shallow slot, and the inboard negative pressure that produces of dividing plate causes moving in the dividing plate, drives in the push rod and moves; Locating column inwardly moves with push rod, knocks a side of flank of tooth tooth top, in continuing inside movement process; Position at the bottom of turning to tooth under the flank of tooth leading role, this moment, push rod rotated with locating column, drove rotary piece simultaneously and rotated; First intercommunicating pore is followed the second intercommunicating pore section aligned conducting, dividing plate pressure at both sides balance, and the spring action lower clapboard is outwards mobile holding out against; Locating column drops on during return on the guide surface of inclination owing on the flank of tooth, made certain rotational offset, and sliding to continue to squint along guide surface falls into shallow slot; And the drive push rod is rotated further in migration process, and when falling into shallow slot, first intercommunicating pore is with the second intercommunicating pore complete matching.And locating column adopts hand reset from the course of action that shallow slot moves to deep trouth, and the motion mode of locating column is with above-mentioned consistent, and after resetting, first intercommunicating pore staggers with second intercommunicating pore.
As preferably, be slidingly matched through axially extended gib block and guide groove between said diaphragm rings week and the inner walls.Dividing plate through gib block and guide groove engagement limits rotation, the second intercommunicating pore position is remained stablize motionless.
As preferably, be provided with indicative mark in the middle part of the said push rod, housing is provided with the window that is used to observe indicative mark.Alert state is gone in indentation in push rod receives the air pressure driving, and window aligns with sign, is convenient to judge.
As preferably, the inner side surface of rotary piece and dividing plate are fitted.
The present invention utilizes the suction tude internal pressure to change and drives the alarm set action, and once not changing once more with the variation of suction tude internal pressure after the action, reliable alerting signal is provided again; Utilize the pressure conversion of the switching realization exocoel of pressure channel, need not the device that connects and fixes by electronic equipment or other complicacies, simple and reliable for structure.
Description of drawings
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 among Fig. 1 of the present invention.
Fig. 4 is the structural representation of alert state of the present invention.
Fig. 5 is a C-C view among Fig. 4 of the present invention.
Among the figure: 1. engine air inlet tube, 2. through hole 3. holds out against spring, 4. dividing plate, 5. gib block, 6. second intercommunicating pore; 7. first intercommunicating pore, 8. push rod, 9. rotary piece, 10. gusset, 11. sleeves, 12. gas guide grooves; 13. locating column, 14. shallow slots, 15. deep trouths, 16. flank of tooth, 17. guide surfaces; 18. window, 19. housings, 20. inner chambers, 21. exocoels, 22. pores.
Embodiment
Below through specific embodiment and combine accompanying drawing that the present invention is further specified.
Embodiment: a kind of engine air filter stops up alarm set, like Fig. 1, shown in Figure 2.This device comprises columniform housing 19; Housing 19 inside are separated into inner chamber 20 and exocoel 21 through dividing plate 4; Inner chamber 20 chamber walls are provided with some through holes 2; Inner chamber 20 is communicated with through through hole 2 with engine air inlet tube 1. and be provided with between the inner side surface of dividing plate 4 and inner chamber 20 ends 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 that matches with gib block 5.The outer side surface of dividing plate 4 links to each other with push rod 8; The inner of push rod 8 is provided with rotary piece 9; Rotary piece 9 rotatable being embedded on the surface of dividing plate 4 keep rotary piece 9 and dividing plate to fit, and dividing plate 4 outer surfaces are provided with flange and fasten rotary piece, avoid dividing plate and rotary piece to break away from; Rotary piece 9 surperficial same circumference are provided with some first intercommunicating pores 7; Be provided with some second intercommunicating pores 6 with rotary piece with circumference is corresponding on the dividing plate 4, like Fig. 1, shown in Figure 2 when alarm set is positioned at original state, first intercommunicating pore 7 and second intercommunicating pore 6 stagger each other.The pore 22 that exocoel 21 end walls are passed in the outer end of push rod stretches out, and on the shaft of push rod 8 and pore 22 cooperation places, is axially arranged with and is 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 that is used to observe, and window 18 outermost are alignd with gas guide groove the inner, paints redness in the gas guide groove 12 as cue mark, and window 18 staggers with cue mark under the original state.
Like Fig. 1, shown in Figure 3, the middle part of push rod 8 evenly is provided with locating column 13 on shaft ring week, and the middle part of exocoel 21 is provided with and is set in the outer sleeve 11 of push rod; Sleeve 11 is fixed on the wall of chamber through gusset 10; Deep trouth 15 and shallow slot 14 alternately were set on the inwall ring week of sleeve 11, and adjacent notch is through connecting along the identical guide surface 17 of circumference true dip direction, and the notch opening is towards dividing plate 4 directions; Also be provided with the flank of tooth 16 on sleeve 11 inwalls relative with notch; The tooth top of the flank of tooth 16 aligns with bottom land, align with guide surface 17 at the bottom of the tooth, and aligned position changes to entering one lateral deviation of bottom land and guide surface 17 respectively.
When air-strainer stops up, produce negative pressure in the engine air inlet tube 1, inner chamber 20 internal air pressures move in dividing plate 4 and the push rod 8 less than exocoel 21 air pressure; Locating column 13 inwardly moves with push rod 8, breaks away from the side that deep trouth 15 knocks the flank of tooth 16 tooth tops, in continuing inside movement process; Position at the bottom of turning to tooth under the flank of tooth 16 leading roles, this moment, push rod 8 rotated with locating column 13, drove rotary piece 9 simultaneously and rotated; First intercommunicating pore 7 is with the conducting of overlapping of second intercommunicating pore 6, and dividing plate 4 pressure at both sides balances outwards move holding out against spring 3 effect lower clapboards 4; Locating column 13 drops on during return on the guide surface 17 of inclination owing on the flank of tooth 16, made certain rotational offset, continues rotational offset along the guide surface slip and falls into shallow slot 14; And drive push rod 8 is rotated further in migration process, and when falling into shallow slot 14, first intercommunicating pore 7 is overlapping fully with second intercommunicating pore 6; Get into alert state, like Fig. 4 and shown in Figure 5, intercommunicating pore 7 alignd with second intercommunicating pore 6 and made inner chamber 20 and exocoel 21 pressure balances this moment first; And gas guide groove 12 retraction pores 22 inboards, push rod 8 shafts are blocked the pore 22 isolated exocoel 21 and the external worlds, and the indicative mark of gas guide groove 12 falls within window 18 range of observation; This moment, no matter how suction press changed owing to dividing plate pressure at both sides balance, and alarm set can not automatically reset; After needing the staff to change or cleaning filter core, push push rod and carry out hand reset, locating column gets into deep trouth from shallow slot in the reseting procedure; And rotary piece rotates, and first intercommunicating pore separates with second intercommunicating pore and staggers, and gas guide groove is communicated with the exocoel and the external world again.
Claims (8)
1. an engine air filter stops up alarm set, comprises housing, the inner chamber that is provided with exocoel in the housing and is communicated with engine air inlet tube; It is characterized in that: be provided with dividing plate between inner chamber and the exocoel, be provided with between the baffle surface of inner chamber one side and the intracavity sidewall 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 first intercommunicating pores, on the dividing plate with rotary piece with corresponding some second intercommunicating pores, the coaxial push rod that is provided with in rotary piece center of being provided with of circumference; The exocoel outer side wall is provided with pore, and the push rod outer end is passed pore and stretched out exocoel, and push rod external diameter and air vent aperture match; Push rod shaft and pore corresponding part are provided with axial gas guide groove; The push rod middle part is provided with the locating column of radial protrusion, is provided with deep trouth and the shallow slot that arrange the space on circumference in the exocoel, also has guiding surface between deep trouth and the shallow slot; When locating column is fastened in the deep trouth; First intercommunicating pore and second intercommunicating pore stagger on circumference each other, the push rod gas guide groove is communicated with the pore both sides, and when locating column is fastened in the shallow slot, first intercommunicating pore and the alignment of second intercommunicating pore, push rod gas guide groove retraction pore inboard and shaft stop up pore.
2. engine air filter according to claim 1 stops up alarm set, it is characterized in that: be provided with sleeve in the said exocoel, jacket casing is located at the push rod outside, and deep trouth, shallow slot and guiding surface are arranged on the inwall of sleeve.
3. engine air filter according to claim 2 stops up alarm set, it is characterized in that: said sleeve adopts gusset to be fixed on the outer cavity wall.
4. stop up alarm set according to claim 1 or 2 or 3 described engine air filters, it is characterized in that: said deep trouth and shallow slot opening side are towards the dividing plate direction.
5. stop up alarm set according to claim 1 or 2 or 3 described engine air filters; It is characterized in that: said guiding surface comprises the guide surface of the inclination that connects adjacent notch and the flank of tooth that is oppositely arranged with notch, and the tooth top of the flank of tooth aligns with notch, align with guide surface at the bottom of the tooth.
6. stop up alarm set according to claim 1 or 2 or 3 described engine air filters, it is characterized in that: be slidingly matched through axially extended gib block and guide groove between said diaphragm rings week and the inner walls.
7. stop up alarm set according to claim 1 or 2 or 3 described engine air filters, it is characterized in that: said push rod middle part is provided with indicative mark, and housing is provided with the window that is used to observe indicative mark.
8. stop up alarm set according to claim 1 or 2 or 3 described engine air filters, it is characterized in that: the inner side surface of rotary piece and dividing plate are fitted.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102678399A true CN102678399A (en) | 2012-09-19 |
| CN102678399B CN102678399B (en) | 2014-02-26 |
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Family Applications (1)
| 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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| Country | Link |
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| CN (1) | CN102678399B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738546A (en) * | 2020-05-29 | 2021-12-03 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738546A (en) * | 2020-05-29 | 2021-12-03 | 北汽福田汽车股份有限公司 | Air filter blockage alarm triggering device, alarm system, engine and vehicle |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102678399B (en) | 2014-02-26 |
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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 |