CN200981500Y - Antiseep oil tank cover - Google Patents
Antiseep oil tank cover Download PDFInfo
- Publication number
- CN200981500Y CN200981500Y CN 200620165617 CN200620165617U CN200981500Y CN 200981500 Y CN200981500 Y CN 200981500Y CN 200620165617 CN200620165617 CN 200620165617 CN 200620165617 U CN200620165617 U CN 200620165617U CN 200981500 Y CN200981500 Y CN 200981500Y
- Authority
- CN
- China
- Prior art keywords
- fuel lid
- chamber
- lid body
- diaphragm
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model discloses an antiseep oil box cover comprising an outer cover, an oil box cover body and a chassis, wherein a chamber is provided between the chassis and the oil box cover body, an axial via hole provided on the oil box cover body is communicated with the chamber and is run into the outside of the outer cover through an exhaust passage, a membrane with thickness less than the highness of the chamber is arranged in the chamber and is perpendicular to the oil box cover body, the membrane is less than the size of the chamber but more than the via hole radially, when the membrane is stuck to the via hole, the via hole perimeter has toroidal sealing surface, the axial via hole provided on the chassis is communicated with the chamber and faces the membrane, at least two bosses are provided on the via hole perimeter for supporting the membrane to make sure that the membrane will not block up the via hole, and an air-out groove is formed between the bosses and is communicated with the via hole on the chassis and the chamber. The oil box cover of the utility model is capable of forming good sealing when being dumping, further, it is capable of making the oil box open to atmosphere.
Description
Technical field
The utility model relates to a kind of fuel lid, particularly relates to a kind of antiseep fuel lid.
Background technology
The present fuel lid that uses, the general structure that all has check valve, have only when extraneous air pressure greater than the air pressure in the fuel tank, and during greater than the response pressure of check valve, atmosphere just can enter into fuel tank, keeps can not forming excessive vacuum in the fuel tank and is beneficial to engine oil.And the air pressure in the fuel tank is greater than the air pressure in the external world, and during greater than the reverse response pressure of check valve, the gas in the fuel tank just can escape into the external world, and is too high to prevent tank pressure.Make the air pressure in the fuel tank sometimes can sometimes can be lower than extraneous air pressure again like this, influence the stability of fuel tank fuel feeding greater than the air pressure in the external world.And present one-way valve structures, complex structure not only, fuel tank is when toppling over, and liquid is easy to leak from fuel lid.
The utility model content
The technical problems to be solved in the utility model provides a kind of antiseep fuel lid, it makes fuel tank when toppling over, the liquid that can not of the inside leaks from fuel lid, and because this special structure, make to guarantee in use can communicate naturally with ambient atmosphere in the fuel tank, guaranteed that the fuel tank inner and outer air pressure equates.
The technical solution adopted in the utility model is: a kind of antiseep fuel lid, comprise enclosing cover and be loaded on the interior fuel lid body of enclosing cover, it is characterized in that: also comprise being assemblied in the base of described fuel lid body axial end away from enclosing cover one side, between described base and fuel lid body, a chamber is arranged, there is axially extending bore to communicate on the described fuel lid body with described chamber, and this axially extending bore leads to outside the enclosing cover by the exhaust passage, in chamber, be equipped with the axial vertical diaphragm of fuel lid body and diaphragm thickness less than chamber height, this diaphragm is radially less than the size of chamber and greater than through hole, and can form annular sealing surface at aperture periphery when being affixed to openings; There is axially extending bore to communicate on the described base and the described diaphragm of subtend with described chamber, have at least two boss to be used to support described diaphragm in bore periphery and make it can be this breather clogged, form between the boss with base on through hole and the air discharge duct that communicates of described chamber.
Being positioned at described chamber setting on the described base can have the annular groove of maximum outside diameter greater than the external diameter of described diaphragm, and the air discharge duct between the described boss communicates with this annular groove.
Oil back chamber greater than the through hole on the described fuel lid body can be arranged between described fuel lid body and the enclosing cover.
Described exhaust passage can be for being positioned at radial direction through hole or the groove that communicates with oil back chamber on the fuel lid body.
Described fuel lid body can have the boss towards base one side, and described base is positioned at the top of this boss.
Described fuel lid body periphery can have step-like annular sealing surface.
Described chamber height can be 3-10 times of described diaphragm thickness, and described diaphragm is that thickness is the oil resistant plastics sheet of 0.05-1.0mm.
The utility model can also be realized in the following way: a kind of antiseep fuel lid, comprise enclosing cover and be loaded on the interior fuel lid body of enclosing cover, it is characterized in that: also comprise being assemblied in the base that is positioned at enclosing cover one side on the described fuel lid body, between described base and fuel lid body, a chamber is arranged, there is axially extending bore to communicate on described fuel lid body and the base with described chamber, in chamber, be equipped with the fuel lid body shaft to vertical diaphragm and diaphragm thickness less than chamber height, this diaphragm is radially less than chamber size and greater than the through hole on the base, and can form annular sealing surface in this bore periphery during the openings on being affixed to base; Have at least two boss to be used to support described diaphragm at described fuel lid body through-holes periphery and make it can be this breather clogged, form between the boss with the fuel lid body on through hole and the air discharge duct that communicates of described chamber.
The beneficial effects of the utility model are: adopt diaphragm as valve core structure, in normal condition, diaphragm is supported on the boss in the chamber under diaphragm deadweight effect, can be with the breather clogged of chamber interior diaphragm upper and lower part, and make through diaphragm periphery and gap between the chamber wall that fuel tank is inside and outside to communicate naturally, maintenance tank pressure constant; When the fuel tank that fills oil is being toppled over, gasoline at first enters in the through hole of diaphragm bottom, because diaphragm is very light, the through hole direction of diaphragm above it moves and is close to the end face of through hole under the slight pressure of fuel oil, produce sealing effectiveness, make fuel oil in fuel lid, not flow out to the effect that the outside reaches antiseepage.
Description of drawings
Fig. 1 is the structural representation of antiseep fuel lid of the present utility model.
Fig. 2 is a fuel lid main body structure scheme drawing.
Fig. 3 is the structural representation of fuel lid base.
Fig. 4 is the another kind of embodiment scheme drawing of antiseep fuel lid of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments antiseep fuel lid of the present utility model is described further, to help understanding content of the present utility model.
Embodiment 1
As shown in Figure 1, a kind of antiseep fuel lid, comprise enclosing cover 1 and be loaded on the interior fuel lid body 2 of enclosing cover, also comprise the base 4 that is assemblied in fuel lid body 2 away from axial end one side of enclosing cover, one chamber 5 is arranged between base 4 and fuel lid body 2, being positioned at axle center place on fuel lid body 2 has axially extending bore 6 to communicate with chamber 5, and this axially extending bore 6 also leads to outside the enclosing cover 1 to communicate with atmosphere by radially air discharge duct 7 on the fuel lid body.Diaphragm 3 with the axis normal of fuel lid body 2 is housed in chamber 5, and the thickness of diaphragm 3 is less than chamber 5 height in the axial direction, make that diaphragm 3 (is a left and right directions among Fig. 1 about can be in chamber 5, be installed on the fuel tank is to be above-below direction) motion, this diaphragm 3 is diametrically less than the size of chamber 5 and greater than logical 6 holes, make by forming airspace between diaphragm 3 edges and chamber 5 inwalls, and when being affixed to the aperture of through hole 6, through hole 6 is covered fully, and can be positioned at the aperture periphery formation annular sealing surface of chamber at this through hole 6.Through hole 6 and diaphragm 3 on the axially extending bore 9 subtend fuel lid bodies are also arranged on the base 4, have at least four boss 10 to be used to support diaphragm 3 at through hole 9 peripheries and make it the aperture of this through hole 9 can not covered obstruction fully.With reference to shown in Figure 3, form the air discharge duct 12 that communicates with through hole 9 on the base between the boss 10, so that air or oil gas are walked around diaphragm 3 through this air discharge duct 12 and by diaphragm edge, and communicate with through hole 6 on the fuel lid body 2, and, will be communicated with inside and outside the fuel tank by hole or slit (not shown) on air discharge duct 12 and the enclosing cover 1.
In normal condition, under the deadweight effect of diaphragm 3, diaphragm 3 is to be in the bottom of chamber 5 and to be supported on the boss 10 on the base 4, therefore the through hole 6,9 of the diaphragm upper and lower in the chamber 5 can not stopped up, and make through the passage that the gap between the inwall of the air discharge duct 12 between the boss 10, diaphragm 3 peripheries and chamber 5 and air discharge duct 7 form that fuel tank is inside and outside to communicate naturally, the substantially constant of maintenance tank pressure; When the fuel tank that fills oil is being toppled over, fuel oil at first enters in the base 4 from the through hole 9 of base 4, because diaphragm 3 is very light, move and be close to the end face of through hole 6 in the direction of the through hole 6 of diaphragm 3 under the slight pressure of fuel oil on fuel lid body 2, produce sealing effectiveness.Make fuel oil can not reach the effect of antiseep from the outside that fuel lid body 2 flows to fuel tank.
Because diaphragm 3 moves in chamber 5 and may lean against on the madial wall of chamber 5 at its edge, for guaranteeing that the through hole 9 on the base 4 is communicated with the space that chamber 5 is arranged in diaphragm 3 tops (being the right-hand of Fig. 1), except that the quantity that can increase air discharge duct 12 for example is four, desirable as a comparison mode, as shown in figures 1 and 3, be positioned at described chamber on can also base 4 and be provided with the annular groove 11 of maximum outside diameter, and the air discharge duct 12 between the boss 10 is communicated with this annular groove 11 greater than the external diameter of described diaphragm 3.Can guarantee all the time that like this each air discharge duct 12 all can communicate with the diaphragm upper space with gap between the chamber wall by annular groove 11 and diaphragm edge.
As depicted in figs. 1 and 2, the oil back chamber 8 greater than the through hole on the described fuel lid body is arranged between fuel lid body 2 and the enclosing cover 1,, also can collect in this oil back chamber 8 and pass back into fuel tank even there is the fuel oil of trace to ooze out like this by the through hole on the fuel lid body 26.
As shown in Figure 1, the boss 13 that on fuel lid body 2, has away from a side of enclosing cover, described base 4 is positioned at the top of this boss 13.Like this because the existence of boss 13, fuel oil is difficult for rushing at or flow to through hole 9 on the base 4 along the fuel lid inner body wall when fuel tank is toppled over, and reaches better antiseep effect.
Described fuel lid body periphery has step-like annular sealing surface 14, and the step place is used to adorn seal ring.
The height of chamber 5 is that the 3-10 of diaphragm 3 thickness doubly is advisable, what diaphragm was more satisfactory is that employing thickness is the oil resistant plastics sheet of 0.05-1.0mm, diaphragm is lighter like this, and the sealing stroke is less, when being subjected to the fuel oil effect or toppling over, can be adjacent to fast and go into interruption-forming at through hole 6 and seal, and thickness is excessive or chamber height is too much greater than diaphragm thickness, makes diaphragm move required application force and the increase of diaphragm operation stroke, is difficult in time forming sealing.
Embodiment 2
As shown in Figure 2, be the another kind of embodiment of antiseep fuel lid, form equally by enclosing cover 1 and the fuel lid body 2 and base 4, the diaphragm 3 that are loaded in the enclosing cover 1, a chamber 5 is arranged between base 4 and fuel lid body 2.There is through hole to communicate on fuel lid body 2 and the base 4 with chamber 5.As different from Example 1, base 4 is mounted in the opposite side of fuel lid body 2, i.e. position between fuel lid body 2 and enclosing cover 1, the boss 10 that plays support diaphragm 3 is positioned at the side of fuel lid body 2 towards diaphragm 3, form air discharge duct between the boss, communicate with the external world and a radial direction through hole 15 can be set on fuel lid body 2.Other structure all can with embodiment 1 in consistent, boss 13 for example is set on the fuel lid body, in boss 10 peripheries annular groove 11 etc. is arranged, diaphragm thickness and material and chamber height etc. all with among the embodiment 1 same requirement is arranged, no longer be repeated in this description at this.
Claims (10)
1, a kind of antiseep fuel lid, comprise enclosing cover and be loaded on the interior fuel lid body of enclosing cover, it is characterized in that: also comprise being assemblied in the base of described fuel lid body axial end away from enclosing cover one side, between described base and fuel lid body, a chamber is arranged, there is axially extending bore to communicate on the described fuel lid body with described chamber, and this axially extending bore leads to outside the enclosing cover by the exhaust passage, in chamber, be equipped with the axial vertical diaphragm of fuel lid body and diaphragm thickness less than chamber height, this diaphragm is radially less than the size of chamber and greater than through hole, and can form annular sealing surface at aperture periphery when being affixed to openings; There is axially extending bore to communicate on the described base and the described diaphragm of subtend with described chamber, have at least two boss to be used to support described diaphragm in bore periphery and make it can be this breather clogged, form between the boss with base on through hole and the air discharge duct that communicates of described chamber.
2, antiseep fuel lid as claimed in claim 1 is characterized in that: be positioned at described chamber and be provided with the annular groove of maximum outside diameter greater than the external diameter of described diaphragm on described base, the air discharge duct between the described boss communicates with this annular groove.
3, antiseep fuel lid as claimed in claim 1 is characterized in that: the oil back chamber greater than the through hole on the described fuel lid body is arranged between described fuel lid body and the enclosing cover.
4, antiseep fuel lid as claimed in claim 1 is characterized in that: described fuel lid body has boss in the side away from enclosing cover, and described base is positioned at the top of this boss.
5, as described antiseep fuel lid one of in the claim 1 to 4, it is characterized in that: described fuel lid body periphery has step-like annular sealing surface.
6, as described antiseep fuel lid one of in the claim 1 to 4, it is characterized in that: described chamber height be described diaphragm thickness 3-10 doubly, described diaphragm is that thickness is the oil resistant plastics sheet of 0.05-1.0mm.
7, a kind of antiseep fuel lid, comprise enclosing cover and be loaded on the interior fuel lid body of enclosing cover, it is characterized in that: also comprise being assemblied in the base that is positioned at enclosing cover one side on the described fuel lid body, between described base and fuel lid body, a chamber is arranged, there is axially extending bore to communicate on described fuel lid body and the base with described chamber, in chamber, be equipped with the fuel lid body shaft to vertical diaphragm and diaphragm thickness less than chamber height, this diaphragm is radially less than chamber size and greater than the through hole on the base, and can form annular sealing surface in this bore periphery during the openings on being affixed to base; Have at least two boss to be used to support described diaphragm at described fuel lid body through-holes periphery and make it can be this breather clogged, form between the boss with the fuel lid body on through hole and the air discharge duct that communicates of described chamber.
8, antiseep fuel lid as claimed in claim 7 is characterized in that: be positioned at described chamber and be provided with the annular groove of maximum outside diameter greater than the external diameter of described diaphragm on described fuel lid body, the air discharge duct between the described boss communicates with this annular groove.
9, antiseep fuel lid as claimed in claim 7 is characterized in that: described fuel lid body is having boss away from enclosing cover one side, and this side body edges has step-like sealing surface.
10, as described antiseepage seepage fuel lid one of in the claim 7 to 9, it is characterized in that: described chamber height be described diaphragm thickness 3-10 doubly, described diaphragm is that thickness is the oil resistant plastics sheet of 0.05-1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620165617 CN200981500Y (en) | 2006-12-13 | 2006-12-13 | Antiseep oil tank cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620165617 CN200981500Y (en) | 2006-12-13 | 2006-12-13 | Antiseep oil tank cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200981500Y true CN200981500Y (en) | 2007-11-28 |
Family
ID=38908662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620165617 Expired - Fee Related CN200981500Y (en) | 2006-12-13 | 2006-12-13 | Antiseep oil tank cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200981500Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677732A (en) * | 2012-04-25 | 2012-09-19 | 徐州徐工挖掘机械有限公司 | Ventilating oil tank of hydraulic excavator |
| CN104854280A (en) * | 2012-12-20 | 2015-08-19 | 卡特彼勒公司 | Liquid and air separator |
| CN112638688A (en) * | 2018-09-03 | 2021-04-09 | 米格尔·格瑞德·艾薇拉·戴斯 | Thermal valve for maintaining vapor and gas and venting pressure and vacuum |
-
2006
- 2006-12-13 CN CN 200620165617 patent/CN200981500Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677732A (en) * | 2012-04-25 | 2012-09-19 | 徐州徐工挖掘机械有限公司 | Ventilating oil tank of hydraulic excavator |
| CN104854280A (en) * | 2012-12-20 | 2015-08-19 | 卡特彼勒公司 | Liquid and air separator |
| CN112638688A (en) * | 2018-09-03 | 2021-04-09 | 米格尔·格瑞德·艾薇拉·戴斯 | Thermal valve for maintaining vapor and gas and venting pressure and vacuum |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1888453A (en) | Piston type energy accumulator | |
| CN200981500Y (en) | Antiseep oil tank cover | |
| CN1103252C (en) | Spray container | |
| CN1550388A (en) | Electromagnetic actuating valve | |
| CA2690931A1 (en) | Vent control valve for a fuel tank | |
| CN102207114B (en) | Two-stage servo hydraulic cylinder | |
| CN202022735U (en) | Wide-mouth container filling valve | |
| CN201009879Y (en) | Oil cup assembly of air enforceing pump | |
| CN204024964U (en) | A kind of vertical reciprocating type vacuum pump | |
| CN210153223U (en) | Anti-cavitation multi-sleeve regulating valve | |
| AU702060B2 (en) | Two-way vent valve | |
| CN2779182Y (en) | Magnetic valve | |
| CN206860255U (en) | A kind of engine motor oil filling lid | |
| CN206299798U (en) | Floated control valve | |
| CN201582343U (en) | Damping frequency adjustable vibration absorber | |
| CN210153242U (en) | Regulating valve with pressure reducing and noise reducing functions | |
| CN219299683U (en) | Built-in oil return filter and hydraulic oil tank using same | |
| CN2434293Y (en) | Oil cylinder ventilation valve of hydraulic jack | |
| CN104895434A (en) | Stay rope type air damper | |
| CN201836429U (en) | Sleeve-type regulating valve | |
| CN220890649U (en) | Exhaust structure of high-level low-liquid-discharge pressure cylinder | |
| CN2639627Y (en) | Elastic negative pressure automatic valve | |
| CN2639339Y (en) | Sealing structure of small sealing surface of water-saving two-barrel washer | |
| CN203962242U (en) | A kind of fuel tank of a kind of Ventilated anti-leakage oil tank cover and application thereof | |
| CN204344974U (en) | Solenoid valve and mangetic core assembly thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |