CN201405726Y - Tractor fuel tank cap - Google Patents
Tractor fuel tank cap Download PDFInfo
- Publication number
- CN201405726Y CN201405726Y CN2009200447170U CN200920044717U CN201405726Y CN 201405726 Y CN201405726 Y CN 201405726Y CN 2009200447170 U CN2009200447170 U CN 2009200447170U CN 200920044717 U CN200920044717 U CN 200920044717U CN 201405726 Y CN201405726 Y CN 201405726Y
- Authority
- CN
- China
- Prior art keywords
- cylinder
- fuel tank
- sealed body
- lower cover
- spring
- 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
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model discloses a tractor fuel tank cap, the upper end of a column body is provide with a flash edge, at least more than two gaps are arranged at the edge of the flash edge; the bottom ofthe column body is provided with a ring-shaped projection, the top of the projection is provided with more than two small holes; the inner wall of the at the bottom of the column body is provide withat least more than two grooves; a rubber sealed body is a platform structure which has a concave center and convex upper peripheries, the lower end of the rubber sealed body is matched with the innerbottom end of the column body; the convex peripheries of the rubber sealed body are located under the ring-shaped projection; the center of a lower cap body is provided with a center hole, the middleinside the lower cap body is provided with ring-shaped convex platforms; the upper part of a spring is sleeved at the outer surface of the concave center of the rubber sealed body, and the lower end of the spring is located in the ring-shaped convex platform at the middle inside the lower cap body; the lower cap body is arranged at the bottom end of the column body, and the flash edge of the column body is fixed at a fixed column in an upper cap body. The tractor fuel tank cap not only can adjust the balance of internal pressure and external pressure of the fuel tank, and also can effectivelyprevent the oil leakage of the fuel tank.
Description
Affiliated technical field
The utility model relates to a kind of tractor oil case lid.
Background technology
Existing a kind of tractor oil case lid, it is made of the upper cover body on top and the cylinder of bottom, and the cylinder of bottom is arranged on the upper cover body on top, and the side face top of cylinder is set with seal ring, its side face is provided with screw thread.During use, in the negative thread that is screwed at tank filler tube on the cylinder side face of fuel lid bottom.For the inside that makes fuel tank and the external world balance that keep-ups pressure, the cylinder of fuel tank upper part of the cover upper cover body and bottom is provided with air extractor vent, therefore often causes leakage when case lid shakes, causes the loss of oil plant.
The utility model content
The technical problems to be solved in the utility model provides a kind of tractor oil case lid, and it can not only regulate the balance of fuel tank inner and outer air pressure, and can effectively prevent the leakage of oil plant in the fuel tank.
For solving the problems of the technologies described above, a kind of tractor oil case lid of the utility model, it contains upper cover body and cylinder, the outside face of cylinder is provided with screw thread, also contain rubbery sealed body, spring and lower cover, the upper end of described cylinder is provided with overlap, this overlap is provided with assembly opening, at least be provided with the breach more than two on the edge of this overlap, the bottom of cylinder is provided with annular protrusion, this protruding top is provided with the aperture more than two, at least be provided with the groove more than two on the inwall of cylinder bottom, rubbery sealed body is an indented central, the stage body planform of upper periphery projection, the bottom matches in its lower end and the described cylinder, the part of rubbery sealed body upper periphery projection is positioned at the below of the annular protrusion that cylinder bottom is provided with, the central authorities of lower cover are provided with centre hole, middle part is provided with annular boss in it, the top of spring is sleeved on the outside face of rubbery sealed body indented central, the lower end of spring is positioned at the annular boss that the lower cover middle part is provided with, lower cover is arranged on the bottom of cylinder, and cylinder installs in its overlap assembly opening by screw cylinder is fixed on the fixed leg that is provided with in the described upper cover body.
The groove that the inwall of the bottom of described cylinder is provided with is four.
The aperture that the annular protrusion that the bottom of described cylinder is provided with is provided with is three.
Described lower cover is the ball-crown body planform of interior sky.
Owing to being provided with groove on the inwall that is provided with aperture, its bottom at the top that is provided with breach, its base circle projection on the overlap of fuel lid cylinder, the central authorities of lower cover are provided with through hole, so just formed the passage of a gas communication, thereby made pressure and the outer pressure maintenance balance of fuel tank in the fuel tank; Because rubbery sealed body is under the effect of spring, the part of its upper periphery projection is in the below of the annular protrusion that cylinder bottom is provided with always, and the bottom matches in rubbery sealed body bottom and the cylinder, and the gap between the inwall of the top of rubber seal external surface and cylinder bottom is very little again, therefore when case lid shakes, oil plant can not run out in the fuel tank and be caused leaking and cause the loss of oil plant.
Description of drawings
Accompanying drawing is the structural representation of a kind of tractor oil case lid of the utility model
1. upper cover body in the accompanying drawing, 2. fixed leg, 3. screw, 4. breach, 5. overlap, 6. seal ring, 7. cylinder, 8. screw thread, 9. aperture, 10. annular protrusion, 11. upper periphery projectioies, 12. gaps, 13. groove, 14. springs, 15. annular boss, 16. lower covers, 17. centre holes, 18. rubbery sealed bodies.
The specific embodiment
In the accompanying drawing, a kind of tractor oil case lid of the utility model, it contains upper cover body 1 and cylinder 7, and the outside face of cylinder 7 is provided with screw thread 8, and it also contains rubbery sealed body 18, spring 14 and lower cover 16.The upper end of cylinder 7 is provided with overlap 5, this overlap 5 is provided with assembly opening, at least be provided with the breach 4 more than two on the edge of this overlap 5, the bottom of cylinder 7 is provided with annular protrusion 10, the top of this projection 10 is provided with the aperture 9 more than two, is provided with the groove 13 more than two on the inwall of the bottom of cylinder 7 at least.The top of cylinder 7 is set with seal ring 6.Rubbery sealed body 18 is the stage body planform of indented central, upper periphery projection 11, and the bottom matches in its lower end and the cylinder 7.The part of rubbery sealed body 18 upper periphery projectioies 10 is positioned at the below of the annular protrusion 10 that cylinder 7 bottoms are provided with.The central authorities of lower cover 16 are provided with centre hole 17, and middle part is provided with annular boss 15 in it.The top of spring 14 is sleeved on the outside face of rubbery sealed body 18 indented centrals, and the lower end of spring 14 is positioned at the annular boss 15 that lower cover 16 middle parts are provided with, and lower cover 16 is arranged on the bottom of cylinder 7.Cylinder 7 installs by screw 3 on the fixed leg 2 that in the assembly opening of overlap 5 into cylinder 7 is fixed on to be provided with in the upper cover body 1.In the present embodiment, the groove 13 that is provided with of the inwall of the bottom of cylinder 7 is four.The aperture 9 that the annular protrusion 10 that the bottom of cylinder 7 is provided with is provided with is three.Lower cover 16 is the ball-crown body planform of interior sky.During use, the screw thread 8 that fuel lid cylinder 7 side faces are provided with is tightened in the negative thread of tank filler tube, when the oil plant of fuel tank descends, the exterior pressure of fuel tank is greater than its pressure inside, at this moment air is by the gap 12 between aperture 9, cylinder 7 bottom interior wall and rubbery sealed body 18 outer peripheral faces at the breach 4 on the edge of cylinder 7 upper end overlaps 5, base circle projection 10 tops and the groove 13 of cylinder 7 bottom interior wall, the centre hole 17 of lower cover 16, enter in the fuel tank, make the inside and outside pressure of fuel tank keep balance.When the pressure of fuel tank internal during greater than exterior pressure, the gas in the fuel tank can enter in the atmosphere along centre hole 17, groove 13, gap 12, aperture 9 and breach 4, makes the inside and outside pressure of fuel tank keep balance.Because rubbery sealed body 18 is under the effect of spring 14, the part of its upper periphery projection 11 is in the below of the annular protrusion 10 that cylinder 7 bottoms are provided with always, and the bottom matches in rubbery sealed body 18 bottoms and the cylinder 7, and the gap between the inwall of the top of rubbery sealed body 18 outside faces and cylinder 7 bottoms is very little again, therefore when case lid shakes, oil plant can not run out in the fuel tank and be caused leaking and cause the loss of oil plant.
Claims (4)
1. tractor oil case lid, it contains upper cover body and cylinder, the outside face of cylinder is provided with screw thread, it is characterized in that: also contain rubbery sealed body, spring and lower cover, the upper end of described cylinder is provided with overlap, this overlap is provided with assembly opening, at least be provided with the breach more than two on the edge of this overlap, the bottom of cylinder is provided with annular protrusion, this protruding top is provided with the aperture more than two, at least be provided with the groove more than two on the inwall of cylinder bottom, rubbery sealed body is an indented central, the stage body planform of upper periphery projection, the bottom matches in its lower end and the described cylinder, the part of rubbery sealed body upper periphery projection is positioned at the below of the annular protrusion that cylinder bottom is provided with, the central authorities of lower cover are provided with centre hole, middle part is provided with annular boss in it, the top of spring is sleeved on the outside face of rubbery sealed body indented central, the lower end of spring is positioned at the annular boss that the lower cover middle part is provided with, lower cover is arranged on the bottom of cylinder, and cylinder installs in its overlap assembly opening by screw cylinder is fixed on the fixed leg that is provided with in the described upper cover body.
2. a kind of tractor oil case lid according to claim 1 is characterized in that: the groove that the inwall of the bottom of described cylinder is provided with is four.
3. a kind of tractor oil case lid according to claim 1 is characterized in that: the aperture that the annular protrusion that the bottom of described cylinder is provided with is provided with is three.
4. a kind of tractor oil case lid according to claim 1 is characterized in that: described lower cover is the ball-crown body planform of interior sky.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200447170U CN201405726Y (en) | 2009-06-01 | 2009-06-01 | Tractor fuel tank cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200447170U CN201405726Y (en) | 2009-06-01 | 2009-06-01 | Tractor fuel tank cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201405726Y true CN201405726Y (en) | 2010-02-17 |
Family
ID=41676651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200447170U Expired - Fee Related CN201405726Y (en) | 2009-06-01 | 2009-06-01 | Tractor fuel tank cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201405726Y (en) |
-
2009
- 2009-06-01 CN CN2009200447170U patent/CN201405726Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20100601 |