CN202302153U - Safety valve of automobile fuel tank - Google Patents
Safety valve of automobile fuel tank Download PDFInfo
- Publication number
- CN202302153U CN202302153U CN2011203918820U CN201120391882U CN202302153U CN 202302153 U CN202302153 U CN 202302153U CN 2011203918820 U CN2011203918820 U CN 2011203918820U CN 201120391882 U CN201120391882 U CN 201120391882U CN 202302153 U CN202302153 U CN 202302153U
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- China
- Prior art keywords
- valve seat
- spring
- seat
- spool
- oil tank
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- 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 relates to the technical field of fuel tank safety, particularly to a safety valve of an automobile fuel tank, which aims to solve the problems that the automobile fuel tank is communicated with the atmosphere during normal use and efficiently prevents the fuel from overflowing in case of rolling over. The safety valve includes a valve seat and a valve core, and is characterized in that a tubular barrel body is arranged on the valve seat; an air vent is horizontally arranged at the top of the valve seat; a conical hole column is arranged at the top inside the barrel body of the valve seat; a conical hole communicated with the air vent is arranged at the center of the conical hole column; the valve core is mounted in the barrel body of the valve seat; a top cone matched with the conical hole is arranged at the top of the valve core; a spring hole base is arranged in the valve core; a spring is mounted in the spring hole base; the lower end of the spring is positioned on a spring positioning base in a bottom cover; dotted convex buttons are arranged on the circumference of the bottom cover; and the bottom cover is in an interference fit with the lower end of the barrel body of the valve seat through the dotted convex buttons. The safety valve has excellent opening and closing effect, is safe and reliable, and is simple to manufacture and low in comprehensive cost.
Description
Technical field
The utility model relates to fuel tank safety technique field, especially a kind of automotive oil tank safety valve.
Background technique
The automotive oil tank safety valve is requisite parts in the automotive oil tank assembly; When slide-out, safety valve can prevent that fuel oil from overflowing from safety valve, and when normally using; Allow air to get into fuel tank; To keep the fuel tank internal air pressure to equate that with barometric pressure automotive oil tank safety valve structure form of the prior art differs, and differs from one another.Like patent announcement number is CN201651471U automotive oil tank safety valve, and the inner chamber of upper shell and lower shell body is separated by dividing plate, and ventilating hole is arranged at the top of upper shell; There is the boss of outside protuberance at the middle part of first spool in the upper shell; The center of boss has through hole, and the periphery of boss has inlet hole, and there is port at the middle part of dividing plate; The periphery of port has vent; Vent is blocked in the shirt rim that valve was connected with that passage port is equipped with, and boss is landed on the valve, between first spool and upper shell against first spring is arranged; The valve nozzle on the valve body top in the lower shell body is connected with valve; Second spring and second spool are housed in the passage at valve body center; The port of passage is connected with valve gap; Bottom that the bottom of lower shell body is packaged with and valve body and between against the 3rd spring is arranged, gas port is arranged on the lower shell body, this apparatus structure is complicated, cost is high and sealability is general.And for example patent announcement number is a kind of automotive oil tank safety valve of CN 201772118U, has pedestal, air inlet component, valve hole part; Horizontally disposed suction tude is arranged above the ventilator cowl, be provided with table top above the pedestal, the table top center is provided with through hole; Rubber parts is housed in the through hole, and air inlet component comprises the air inlet part, and valve hole part comprises spool; Block is arranged in the spool, the copper spool is arranged in the block, the breathing pipe of this structure adopts short design; Adopt Plastic Welding between ventilator cowl and the pedestal, junction surface is established seal ring, adopts the cooperation of copper and rubber o-ring and plastics POM in the valve core.
Summary of the invention
The purpose of the utility model is to keep in order to solve oil tank of vehicle and normally to use communicating with barometric pressure and the effective excessive problem of prevention fuel oil when tumbling; A kind of automotive oil tank safety valve simple in structure, reasonable in design is provided; The mode that it adopts spring to combine with spool, during proper functioning, vent is in unimpeded state; Vent is in closed condition when rollover or handstand, prevents that fuel oil from flowing out from safety valve.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals: a kind of automotive oil tank safety valve, comprise valve seat, spool, and it is characterized in that described valve seat is provided with tubular barrel; The top of valve seat is provided with the vent of horizontal arrangement; Valve seat cylindrical shell inner top is provided with the taper hole post, and taper hole post center is provided with the taper hole that communicates with vent, and spool is installed in the valve seat cylindrical shell; The top of spool is provided with the addendum cone that cooperates with taper hole; Be provided with spring socket in the spool, spring is housed in the spring socket, the lower end of spring is positioned on the spring positioning seat in the bottom; The circumference of bottom is provided with the protruding button of point-like, and bottom is through protruding button of point-like and valve seat cylindrical shell lower end interference fit.The vent of horizontal arrangement is arranged in and valve seat all-in-one-piece breathing pipe; The outer end of breathing pipe is provided with taper joint; Be used to connect auxiliary members such as dust guard, the profile of taper hole post is a cylindrical body, and the taper hole at taper hole post center is up-small and down-big taper; Spool has the movable surplus of easy on and off in the valve seat cylindrical shell, when the addendum cone at spool top during with the taper hole closure air vent be closed fully.The protruding button of the point-like that the circumference of bottom is provided with is used for producing interference fit with the bottom seat of valve seat cylindrical shell bottom.This device is loaded on the tip position of oil tank of vehicle, and the designing requirement of spring force is tighter, when fuel tank normally uses; Spring is pressed in the deadweight of spool, and spring is compressed on a small quantity, and addendum cone and taper hole are in normally open; Space and atmosphere in the fuel tank are to guarantee the motor normal fuel injection, when fuel tank is in or stand upside down; Spring force flicks the promotion spool, makes addendum cone and taper hole closed, thereby prevents that fuel oil is excessive.
As preferably, the length of described spool is less than the height in the valve seat cylindrical shell.The length that the length of spool adds upper spring is positioned at the valve seat cylindrical shell together, and the outer round surface of spool is provided with axial rib.
As preferably, the spring socket top in the described spool is provided with cylindrical body, and this cylindrical diameter cooperates with the internal diameter of spring.Cylindrical body is decided spring from the upper end and is positioned, and the diameter of spring socket is greater than the diameter of spring.
As preferably, along continuous straight runs is provided with some installation feet on the external diameter of described valve seat cylindrical shell epimere.Installation foot is the trapezoid blade shape, is used for fuel tank the usefulness that is connected being installed.
As preferably, the hypomere position of described valve seat cylindrical shell is provided with several side channel holes vertically, and the position, top in side channel hole is provided with the protruding button of taper along one week of valve seat cylindrical shell.The side channel hole alleviates the weight of valve seat, and the window that passes through as gas, and the protruding button of taper has not only strengthened the intensity of valve seat cylindrical shell, and helps the installing and locating between valve seat and the fuel tank.
As preferably, described spool addendum cone root is provided with groove, and the diameter of groove is greater than the diameter of taper hole post.The design of groove has not only guaranteed closely cooperating between addendum cone and the taper hole, and the long-term use wearing and tearing that may draw face cone, and groove compensates this wearing and tearing.
As preferably, described bottom is circular platy structure, and the spring positioning seat is the circular tabular short cylinder of protrusion bottom, and the bottom center is provided with the through hole of diameter less than the short cylinder diameter.Spring positioning seat and spring interference fit, the protruding button of point-like is evenly distributed on the bottom circumference.
As preferably, the bottom is provided with the bottom seat in the cylindrical shell of described valve seat, and the degree of depth of bottom seat is greater than the thickness of bottom.The bottom is designed to the bottom seat of aperture greater than barrel diameter in the cylindrical shell of valve seat, and whole bottom is assemblied in the bottom seat.
As preferably, described bottom seat is positioned at the bottom below and is provided with closing in along circumference for one section.After in the bottom seat, being housed to bottom, the upward pressure machine carries out the closing in that the bottom seat is not held, and has prevented coming off of bottom fully.
Effective effect of the utility model is: open, close effective, safe and reliable, make simply, overall cost is low.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model.
Fig. 2 is a kind of valve seat construction schematic representation of the utility model.
Fig. 3 is a kind of valve core structure schematic representation of the utility model.
Fig. 4 is a kind of bottom cover structure schematic representation of the utility model.
Among the figure: 1. valve seat, 11. installation feet, the protruding button of 12. tapers, 13. side channel holes, 14. vents; 15. the bottom seat, 16. taper hole posts, 17. taper holes, 2. spool; 21. addendum cone, 22. grooves, 23. cylindrical bodys, 24. spring sockets; 3. spring, 4. bottom, 41. spring positioning seats, the protruding button of 42. point-like.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of the utility model.
Referring to Fig. 1, a kind of automotive oil tank safety valve of present embodiment is made up of valve seat 1, spool 2, bottom 4 and spring; Wherein valve seat 1 axial centre is provided with tubular barrel; Cylindrical shell appearance top is provided with the installation foot 11 of three trapezoid shapeds, and the cylinder top along continuous straight runs is established a ventilation seat 14, and vent 14 is arranged in breathing pipe; As shown in Figure 2; Columniform taper hole post 16 is established in the center portion, top in valve seat 1 cylindrical shell, and the center of taper hole post 16 is provided with the taper hole 17 that communicates with vent 14, and the bottom is provided with the bottom seat 15 of diameter greater than the cylindrical shell endoporus in the cylindrical shell; The lower semisection position of valve seat 1 cylindrical shell is arranged with side channel hole 13 everywhere vertically, and the position, top that is positioned at side channel hole 13 is along being provided with the protruding button 12 of taper in one week of cylindrical shell.
Spool 2 is installed in the cylindrical shell of valve seat 1, and the top of spool 2 is provided with the addendum cone 21 that cooperates with taper hole 17, and is as shown in Figure 3, and addendum cone 21 roots are provided with the groove 22 of counterbore shape, and the diameter of groove 22 is bigger than the diameter of taper hole post 16, and the degree of depth of groove is less than the height of taper hole post.Be provided with spring socket 24 in the spool 2, be used for shock mount 3 in the spring socket 24, the top of spring socket 24 is provided with the cylindrical body 23 that length is spring socket 24 degree of depth 2/5ths, and the diameter of cylindrical body 23 cooperates with the internal diameter of spring 3.The lower end of spring 3 is positioned on the spring positioning seat 41 in the bottom 4, and the circumference of bottom 4 is provided with 3 protruding buttons 42 of point-like, and is as shown in Figure 4, and bottom 4 is through bottom seat 15 interference fit of the protruding button 42 of point-like with valve seat 1 cylindrical shell lower end.
During normal vehicle operation, this installs that kind as shown in Figure 1 and is in positive set, under the deadweight effect of spool 2; Spool 2 compression member springs 3 length; Addendum cone 21 is in disengaged position with taper hole 17, and air gets into fuel tanks from vent 14 through taper hole 17, makes can not produce negative pressure in the fuel tank and influence fuel feeding.When slide-out becomes horizontal or is inverted, promptly during occurrence of traffic accident, under the effect of spring 3, the addendum cone 21 of spool 2 is pushed down taper hole 17, thereby has prevented that fuel oil is excessive.
The foregoing description is the explanation to the utility model, is not the qualification to the utility model, any protection domain that structure after the simple transformation of the utility model is all belonged to the utility model.
Claims (9)
1. an automotive oil tank safety valve comprises valve seat (1), spool (2), it is characterized in that described valve seat (1) is provided with tubular barrel; The top of valve seat (1) is provided with the vent (14) of horizontal arrangement; Valve seat (1) cylindrical shell inner top is provided with taper hole post (16), and taper hole post (16) center is provided with the taper hole (17) that communicates with vent (14), and spool (2) is installed in valve seat (1) cylindrical shell; The top of spool (2) is provided with the addendum cone (21) that cooperates with taper hole (17); Be provided with spring socket (24) in the spool (2), spring (3) is housed in the spring socket (24), the lower end of spring (3) is positioned on the spring positioning seat (41) in the bottom (4); The circumference of bottom (4) is provided with the protruding button of point-like (42), and bottom (4) is through protruding button of point-like (42) and valve seat (1) cylindrical shell lower end interference fit.
2. automotive oil tank safety valve according to claim 1, the length that it is characterized in that described spool (2) is less than the height in valve seat (1) cylindrical shell.
3. automotive oil tank safety valve according to claim 1 and 2 is characterized in that spring socket (24) top in the described spool (2) is provided with cylindrical body (23), and the diameter of this cylindrical body (23) cooperates with the internal diameter of spring (3).
4. automotive oil tank safety valve according to claim 1 and 2 is characterized in that along continuous straight runs is provided with some installation feet (11) on the external diameter of described valve seat (1) cylindrical shell epimere.
5. automotive oil tank safety valve according to claim 1 and 2; The hypomere position that it is characterized in that described valve seat (1) cylindrical shell is provided with several side channel holes (13) vertically, and the position, top of side channel hole (13) is provided with the protruding button of taper (12) along valve seat (1) one week of cylindrical shell.
6. automotive oil tank safety valve according to claim 1 and 2 is characterized in that described spool (2) addendum cone (21) root is provided with groove (22), and the diameter of groove (22) is greater than the diameter of taper hole post (16).
7. automotive oil tank safety valve according to claim 1; It is characterized in that described bottom (4) is circular platy structure; Spring positioning seat (41) is the circular tabular short cylinder of protrusion bottom (4), and bottom (4) center is provided with the through hole of diameter less than the short cylinder diameter.
8. according to claim 1 or 2 or 7 described automotive oil tank safety valves, it is characterized in that the interior bottom of cylindrical shell of described valve seat (1) is provided with bottom seat (15), the degree of depth of bottom seat (15) is greater than the thickness of bottom (4).
9. automotive oil tank safety valve according to claim 8 is characterized in that described bottom seat (15) is positioned at bottom (4) below and is provided with closing in along circumference for one section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203918820U CN202302153U (en) | 2011-10-16 | 2011-10-16 | Safety valve of automobile fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203918820U CN202302153U (en) | 2011-10-16 | 2011-10-16 | Safety valve of automobile fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202302153U true CN202302153U (en) | 2012-07-04 |
Family
ID=46371049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203918820U Expired - Fee Related CN202302153U (en) | 2011-10-16 | 2011-10-16 | Safety valve of automobile fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202302153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264136A (en) * | 2022-08-15 | 2022-11-01 | 东莞利富高塑料制品有限公司 | Safety valve for automobile oil tank |
-
2011
- 2011-10-16 CN CN2011203918820U patent/CN202302153U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264136A (en) * | 2022-08-15 | 2022-11-01 | 东莞利富高塑料制品有限公司 | Safety valve for automobile oil tank |
| CN115264136B (en) * | 2022-08-15 | 2023-04-14 | 东莞利富高塑料制品有限公司 | Safety valve for automobile oil tank |
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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: 20120704 Termination date: 20121016 |