CN100381688C - Fuel cutoff valve - Google Patents
Fuel cutoff valve Download PDFInfo
- Publication number
- CN100381688C CN100381688C CNB2005100702927A CN200510070292A CN100381688C CN 100381688 C CN100381688 C CN 100381688C CN B2005100702927 A CNB2005100702927 A CN B2005100702927A CN 200510070292 A CN200510070292 A CN 200510070292A CN 100381688 C CN100381688 C CN 100381688C
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- Prior art keywords
- path
- spool
- fuel
- mentioned
- valve
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- Taps Or Cocks (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Mechanically-Actuated Valves (AREA)
- Multiple-Way Valves (AREA)
- Check Valves (AREA)
Abstract
To provide a fuel cut valve to cut the fuel supply using a simple mechanism in tilting at a predetermined or larger angle. A valve element 34 is rotatably inserted and fixed into an insert hole 28 of a valve body retainer member 22. A third passage 38 formed in the valve element 34 revolves followed by the inclination of a swinging arm 14 integrally with the valve body 34. Consequently, a first passage 26a and a second passage 26b respectively of a first tube 20a and a second tube 20b integral with the valve body retainer member 22 are secured to communicate or shut off to the third passage 38.
Description
Technical field
The present invention relates to fuel cutoff valve, relate to fuel cutoff valve, for example, be provided on the vehicle of two-wheeled motor vehicle etc., when this inclination of vehicle is above to predetermined angular, cut off the fuel of supplying with from fuel tank automatically with following formation.
Technical background
In the past, proposed following and the relevant technological thought of mechanicalness structure, that is, under the situation more than the predetermined angular,, the leakproof valve (for example, with reference to patent documentation 1) of ball formula had been set in fuel tank in order to prevent fuel leak from fuel tank at inclination of vehicle.
On the other hand, the use inclination sensor has been proposed also, according to the output signal of this inclination sensor, differentiate the heeling condition of motor, under for the situation more than the angle of inclination of regulation, by the output engine halt signal, the device (for example, patent documentation 2) that motor is stopped.
[patent documentation 1] real public clear 52-34507 communique
[patent documentation 2] opens flat 3-21544 communique in fact
If it is studied in great detail, patent documentation 1 discloses technological scheme [fuel adjustment control valve unit], and according to this technological scheme, leakproof valve is to be made of leakproof valve main body, ball valve and helical spring, above-mentioned ball valve is by helical spring elastic force, with the wall portion crimping of the taper that constitutes the leakproof valve main body.Therefore, though, then have the possibility of fuel,,, can prevent this leakage by the ball valve that is pushed by helical spring according to the conventional art of this patent documentation 1 to external leaks if the position of the pasta in the fuel tank is higher than Carburetor.
But according to this patent documentation 1, because the long-term deterioration of using of helical spring elastic force warp or the wearing and tearing of ball valve etc., differing stops fuel leak surely effectively.
Patent documentation 2 discloses technological scheme [the overturning safety installations of motor], particularly because be output signal by inclination sensor, when motor stops, the device that the driving of petrolift is stopped, so complex structure is difficult to avoid the rising of cost.That is, there is following difficult point,, the action of motor or petrolift stopped, needing distribution or treatment device in order to receive the output signal of inclination sensor, and the manufacture cost rising, also be difficult to stop simultaneously the possibility of misoperation.
The present invention considers such problem and proposes, and so that a kind of use simple mechanical device to be provided, detects the above inclination of predetermined angular of vehicle etc., fuel shutoff effectively, and cheap for manufacturing cost, have again, the fuel cutoff valve that maintenance is more prone to is a purpose.
Summary of the invention
In order to solve above-mentioned problem, relevant fuel cutoff valve of the present invention is arranged in the way of the fuel flow path that is communicated with the fuel supply source, the supply of control fuel, and described fuel cutoff valve is to be made of valve body and valve body; This valve body has first body that forms first path, second body and the spool support unit that forms alternate path; This valve body has the spool that is inserted on the described spool support unit free to rotately and makes the swing arm of described valve core rotation; Described spool has the 3rd path, and relative to the rotating of described spool support unit, described the 3rd path of open and close controlling is communicated with described first path and alternate path by described spool; It is characterized in that, described swing arm is integrally formed with resin material and spool, position below the spool of described swing arm is provided with weight, makes the center of gravity of described swing arm be in described spool below, with the 3rd path of keeping described spool plumbness always.
In this case, because if the 3rd path is littler than first and second passage diameters, then here, the fuel pressure of supplying with increases, this fuel is impregnated between spool support unit and the spool, and its result has improved wearability, and the rotation that makes spool is slynessization more also.Because swing arm is the directed in orthogonal direction always, thus with the spool of this swing arm one, its 3rd path is directed in orthogonal direction below also.Therefore, when first body and the inclination of the second body one, because the 3rd path of spool relatively rotates off normal from first path and alternate path, so can cut off the connection of first path and alternate path.And, can guarantee the wobbling action of swing arm effectively, seek lightweight simultaneously, and then make cheap for manufacturing costization, and obtain practical open and close controlling effect, more suitable.
In addition, with the diameter of above-mentioned first path and alternate path as φ D, under the situation of diameter with above-mentioned the 3rd path, preferably set φ D＞φ d as φ d.Constitute according to this, want by as the fuel of the 3rd path of the little diameter of φ d pressurized, in view of the above, be impregnated between spool and the spool support unit raising wearability.
Have, if between above-mentioned spool and spool support unit oil sealing is set, the fuel that then is impregnated between above-mentioned spool support unit and the spool is impregnated into oil sealing, can further improve sealing effect again.
The effect of invention
According to relevant fuel cutoff valve of the present invention, can obtain to carry out fuel cut-off effectively, and can easily maintain such effect.In addition, because by gravity, and become the structure that moves, so need not power source, different with the situation of using electric property power source, distribution does not all need, and can reduce number of spare parts.Have again,,, just can guarantee the reliability of moving so do not worry misoperation because be the structure that moves by gravity.And, because be machinery and simple structure, so obtained the also effect of cheapization of manufacture cost.
Description of drawings
Fig. 1 is the stereogram of the fuel cutoff valve of relevant first mode of execution of the present invention.
Fig. 2 is the front view of the fuel cutoff valve of Fig. 1.
Fig. 3 is the part cutaway top view of the fuel cutoff valve of Fig. 1.
Fig. 4 is the part sectional side view of the fuel cutoff valve of Fig. 1.
Fig. 5 is the explanatory drawing of operating state of the fuel cutoff valve of presentation graphs 1.
Fig. 6 is the front view of the fuel cutoff valve of relevant second mode of execution of the present invention.
Fig. 7 is the part cutaway top view of the fuel cutoff valve of Fig. 6.
Fig. 8 is the part sectional side view of the fuel cutoff valve of Fig. 6.
Fig. 9 is the part sectional side view of relevant the 3rd mode of execution of the present invention.
Embodiment
Below, to relevant fuel cutoff valve of the present invention, enumerate mode of execution, one side is with reference to accompanying drawing, and one side describes.
As Fig. 1-shown in Figure 4, about the fuel cutoff valve 10 of first mode of execution of the present invention is to be made of valve body 12 and valve body 16 with swing arm 14.Above-mentioned valve body 12 has the first body 20a and the second body 20b, this first body 20a and the second body 20b are attached to the first fuel distribution tube 18a that is connected with the not shown fuel tank that goes out and the second fuel distribution tube 18b that is connected with the not shown petrolift that goes out respectively, and the above-mentioned first body 20a and the second body 20b and spool support unit cylindraceous 22 are integrated.The end of the first body 20a (first end) 24a forms the minor diameter that links with the above-mentioned first fuel distribution tube 18a, and the end of the second body 20b (the second end) 24b forms the minor diameter that links with the above-mentioned second fuel distribution tube 18b.End the side of the first path 26a that extends along its axial direction of the above-mentioned first body 20a, with in the side's of the alternate path 26b that extends along its axial direction of the above-mentioned second body 20b end, be communicated with the inserting hole 28 that axis along above-mentioned spool support unit 22 forms.The opposing party's of the above-mentioned first path 26a end is communicated with the first pipeline 30a of the first fuel distribution tube 18a, and the opposing party's of above-mentioned alternate path 26b end is communicated with the second pipeline 30b of the second fuel distribution tube 18b.
Bond sites at the above-mentioned first body 20a and the first fuel distribution tube 18a sets the first sealed member 32a, and is same, in the bond sites of the second body 20b and the second fuel distribution tube 18b, sets the second sealed member 32b.
Columned spool 34 embeds above-mentioned inserting hole 28 free to rotately.On a side's of above-mentioned spool 34 end, as shown in Figure 2, integrally formedly expand out downwards, be the swing arm 14 of fan shape from the top, the opposing party's of this spool 34 end is outstanding to foreign side from the inserting hole 28 of above-mentioned spool support unit 22, forms annular slot 36 near its end.In addition, on spool 34, form the orthogonal axe of the 3rd path 38, the three paths 38 and spool, and be communicated with the above-mentioned first path 26a, alternate path 26b.Certainly, if under the swing effect of swing arm 14, above-mentioned spool 34 rotates significantly, then cuts off each connected state of above-mentioned the 3rd path 38 and the first path 26a, alternate path 26b.
In this case, the diameter of the diameter of the 3rd path 38 and the first path 26a, alternate path 26b about equally.
Therefore, make spool 34 insert logical above-mentioned inserting holes 28, its end is exposed, pad 40 is fitted to the inboard of above-mentioned annular slot 36, spring ring 42 contacts with this pad 40, is entrenched on the above-mentioned annular slot 36.In view of the above, can stop, and then be that valve body 16 is extracted from above-mentioned inserting hole 28 spool 34.
In addition, in the above-described embodiment, though fuel cutoff valve 10 is mounted between the not shown fuel tank and petrolift that goes out, certainly, this fuel cutoff valve 10 also can be installed between the not shown petrolift and oil sprayer that goes out.
In this case, in valve body 16, as mentioned above,, can in inserting hole 28, freely rotate, so swing arm 14 under its action of gravity, always to Vertical direction, that is, hangs down with the below that the center of rotation of above-mentioned fan shape is compared because be by spool 34.In addition, the material of above-mentioned swing arm 14 preferably is made of the high metal of proportion of iron or copper etc., also can make with synthetic resin etc.
Because above-mentioned such fuel cutoff valve that constitutes 10, on the vehicle body that is assembled into two-wheeled motor vehicle etc., this vehicle body is under the situation of attentioning, be so that the above-mentioned first fuel distribution tube 18a and the second fuel distribution tube 18b become the mode of Vertical direction is configured on the vehicle body, so be positioned at Vertical direction with the first body 20a, the second body 20b that this first fuel distribution tube 18a and the second fuel distribution tube 18b are connected respectively.Like this, because above-mentioned swing arm 14 always vertically hangs down under action of gravity, so above-mentioned the 3rd path 38 also is to be positioned at Vertical direction.Therefore, in this case, the alternate path 26b of the first path 26a of the first body 20a, the 3rd path 38 and the second body 20b is in full communicating state.
On the other hand, if two-wheeled motor vehicle tilts, the then above-mentioned first body 20a, the second body 20b be also according to body sway, but above-mentioned the 3rd path 38 is under the swing effect of above-mentioned swing arm 14, the directed in orthogonal direction.Therefore, tilt to stipulate above angle by making two-wheeled motor vehicle, above-mentioned the 3rd path 38 is until the connection of cutting off above-mentioned first path 26a and alternate path 26b.Detailed about it, explanation subsequently.
The fuel cutoff valve 10 of relevant first mode of execution of the present invention is formation as described above basically, below, its action effect is described.
Under the situation that two-wheeled motor vehicle is attentioned (with reference to Fig. 5 A), the fuel of the gasoline that the petrolift that never illustrates is derived etc. by the first pipeline 30a of the first fuel distribution tube 18a, is directed to fuel cutoff valve 10.In this case, because by the attentioning of two-wheeled motor vehicle, swing arm 14 is under the effect of gravity, the directed in orthogonal direction hangs down, so the 3rd paths 38 in the spool 34 also are to be in plumbness in Fig. 5 A.As a result because the first path 26a, the 3rd path 38 and alternate path 26b are communicated with fully, so this fuel that is imported in fuel cutoff valve 10 without any stopping, exported to the second fuel distribution tube 18b side, supply to the not shown petrolift that goes out.
Like this, as Fig. 5 B or Fig. 5 C, be seen as from its front under right bank or the left-oblique situation at the vehicle body of two-wheeled motor vehicle, the above-mentioned first path 26a, alternate path 26b also according to the inclination of this vehicle body, are right bank or left bank.But, because above-mentioned swing arm 14 is by under the effect of its gravity, the state that maintenance is always vertically hung down is so relatively rotate in the inserting hole 28 of spool 34 in spool support unit 22, simultaneously, the 3rd path 38 is together kept Vertical direction with swing arm 14.Its result is, the first path 26a and alternate path 26b are together with respect to the 3rd path 38 inclination off normals, angle of inclination regardless of above-mentioned vehicle body, all limit being communicated with of the 3rd path 38 and the first path 26a, alternate path 26b, promptly, limit the derivation that is directed to the fuel in the fuel cutoff valve 10, perhaps under the big situation that tilts, cut off its conducting fully.
As mentioned above, in the above-described first embodiment, needn't worry the helical spring elasticity deterioration of in such in the past leakproof valve, using, in addition, need not use for example weighing transducer of electronic type, can pass through cheap construction, effectively or the restriction or the supply of fuel shutoff.In addition, because become the structure that acts on by gravity, thus do not need power source, different with the situation of the power source that uses electric property, do not need treatment device or distribution fully yet.And, can reduce the part kind, in view of the above, can seek the further reduction of manufacture cost.
Then, the fuel cutoff valve 100 of relevant second mode of execution is as Fig. 6-shown in Figure 8.In addition,, give identical reference marks, omit its detailed description for the identical constituting component of the fuel cutoff valve relevant 10 with above-mentioned first mode of execution.
In the fuel cutoff valve 100 of relevant this second mode of execution, the shape of swing arm 14 is not a roughly fan shape of plane, but plane oblong shape roughly.In this case, though above-mentioned swing arm 14 and spool 34 are integrally formed by resin, near the underpart of above-mentioned swing arm 14, screwing togather columned metallic weight 102 with screw 104.Above-mentioned weight 102 uses above-mentioned screw 104, can be replaced by other the weight that varies in weight.In addition, its material is iron or copper preferably, even be not metal, but high hard resin of proportion etc. is also passable.
In above-mentioned fuel cutoff valve 100, if with the diameter of the 3rd path 38 as φ d, with the diameter of the first path 26a and alternate path 26b as φ D, the relation of φ D＞φ d then, that is it is identical with above-mentioned first mode of execution, to form the diameter of the first path 26a and the alternate path 26b formation bigger than the diameter of the 3rd path 38.On the other hand, between spool support unit 22 and spool 34, oil sealing 106a, 106b are set.Therefore, become following structure, that is, the fuel that is directed to the first path 26a that constitutes fuel cutoff valve 100 is impregnated into the gap of above-mentioned spool support unit 22 and spool 34, and the part of this fuel is also soaked among oil sealing 106a, the 106b that resides in the two ends that are arranged at this spool 34.
As mentioned above, in second mode of execution, be on the basis of the effect of above-mentioned first mode of execution, can on swing arm 14,, reduce manufacture cost by with the resin parts multipurpose.And, if, then can change the response time by changing the weight that weight 102 is regulated swing arm 14.In addition, the diameter of the first path 26a and alternate path 26b forms the diameter greater than the 3rd path 38.That is,, pressurize, so fuel soaks into to oil sealing 106a, 106b side because be pressed through its fuel by the 3rd narrow path 38 of diameter.Therefore, the fuel that soaks into produces the effect that sealing effect increases, and can be used as lubricant oil simultaneously and uses, and improves sliding, wearability.
On the other hand, shown in the dotted line of Fig. 8, even under the situation of diameter than the diameter big (φ D＜φ d) of the first path 26a and alternate path 26b of the 3rd path 38, the fuel that is trapped in the 3rd path 38 also is impregnated into the gap of above-mentioned spool support unit 22 and spool 34.Its result is to improve lubricity, wearability.Final result is to carry out various selections, the supply of the fuel in the time of can controlling body sway by the diameter to the 3rd path 38 and the first path 26a, alternate path 26b.
As mentioned above, in second mode of execution, oil sealing 106a, 106b can stop fuel leak, improve sealability.On the other hand, as the 3rd mode of execution, as shown in Figure 9, even replace above-mentioned oil sealing 106a, 106b, between spool support unit 22 and spool 34, seal ring is set, for example O type ring 108a, 108b, also can improve sealing effect, and obtain the effect of sliding, excellent in wear resistance.
Relevant fuel cutoff valve of the present invention is not limited only to above-mentioned mode of execution, only otherwise break away from purport of the present invention, certainly adopts various formations.
Claims (3)
1. a fuel cutoff valve is arranged in the way of the fuel flow path that is communicated with the fuel supply source, the supply of control fuel, and described fuel cutoff valve is to be made of valve body and valve body;
This valve body has first body that forms first path, second body and the spool support unit that forms alternate path;
This valve body has the spool that is inserted on the described spool support unit free to rotately and makes the swing arm of described valve core rotation;
Described spool has the 3rd path, and relative to the rotating of described spool support unit, described the 3rd path of open and close controlling is communicated with described first path and alternate path by described spool;
It is characterized in that, described swing arm is integrally formed with resin material and spool, position below the spool of described swing arm is provided with weight, makes the center of gravity of described swing arm be in described spool below, with the 3rd path of keeping described spool plumbness always.
2. fuel cutoff valve as claimed in claim 1 is characterized in that, with the diameter of described first path and alternate path as φ D, under the situation of diameter with described the 3rd path, be set at φ D＞φ d as φ d.
3. fuel cutoff valve as claimed in claim 1 or 2 is characterized in that, between described spool and spool support unit oil sealing is set.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004195958A JP4276982B2 (en) | 2004-07-01 | 2004-07-01 | Fuel cut valve |
| JP2004195958 | 2004-07-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715635A CN1715635A (en) | 2006-01-04 |
| CN100381688C true CN100381688C (en) | 2008-04-16 |
Family
ID=35791546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100702927A Expired - Fee Related CN100381688C (en) | 2004-07-01 | 2005-05-16 | Fuel cutoff valve |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4276982B2 (en) |
| CN (1) | CN100381688C (en) |
| BR (1) | BRPI0502294A (en) |
| TW (1) | TWI304113B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381402B (en) * | 2010-08-31 | 2015-05-20 | 光阳工业股份有限公司 | Oil leakage preventing structure for motorcycle dumping |
| JP2019189073A (en) * | 2018-04-26 | 2019-10-31 | ヤマハ発動機株式会社 | Saddle-riding type vehicle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1781315A (en) * | 1925-08-22 | 1930-11-11 | Martin C Bright | Automatic gravity cut-off-controlling apparatus |
| GB1383308A (en) * | 1972-04-13 | 1974-02-12 | Butler J A | Diesel engines |
| US4041967A (en) * | 1975-05-14 | 1977-08-16 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus for preventing fuel from leaking on turnover of a vehicle |
| CN85109499A (en) * | 1984-12-28 | 1986-08-13 | 富士重工业株式会社 | The internal-combustion engine fuel cock |
| JPS6441654A (en) * | 1987-08-06 | 1989-02-13 | Akira Ijima | Opening-closing valve |
| CN2071730U (en) * | 1990-09-01 | 1991-02-20 | 宋泮文 | Household automatic water retaining tap |
| JPH0539751A (en) * | 1991-07-31 | 1993-02-19 | Suzuki Motor Corp | Engine fuel switching device |
| CN2196240Y (en) * | 1994-03-10 | 1995-05-03 | 刘剑颖 | Fuel oil heating device |
| CN2435265Y (en) * | 2000-08-02 | 2001-06-20 | 黄钊仁 | Improved fuel overflow cut-off valve for locomotive |
| JP2003021247A (en) * | 2001-07-09 | 2003-01-24 | Hamai Industries Ltd | Plural connected selector valves |
-
2004
- 2004-07-01 JP JP2004195958A patent/JP4276982B2/en not_active Expired - Fee Related
-
2005
- 2005-05-05 TW TW94114479A patent/TWI304113B/en not_active IP Right Cessation
- 2005-05-16 CN CNB2005100702927A patent/CN100381688C/en not_active Expired - Fee Related
- 2005-06-16 BR BRPI0502294 patent/BRPI0502294A/en active Search and Examination
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1781315A (en) * | 1925-08-22 | 1930-11-11 | Martin C Bright | Automatic gravity cut-off-controlling apparatus |
| GB1383308A (en) * | 1972-04-13 | 1974-02-12 | Butler J A | Diesel engines |
| US4041967A (en) * | 1975-05-14 | 1977-08-16 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus for preventing fuel from leaking on turnover of a vehicle |
| CN85109499A (en) * | 1984-12-28 | 1986-08-13 | 富士重工业株式会社 | The internal-combustion engine fuel cock |
| JPS6441654A (en) * | 1987-08-06 | 1989-02-13 | Akira Ijima | Opening-closing valve |
| CN2071730U (en) * | 1990-09-01 | 1991-02-20 | 宋泮文 | Household automatic water retaining tap |
| JPH0539751A (en) * | 1991-07-31 | 1993-02-19 | Suzuki Motor Corp | Engine fuel switching device |
| CN2196240Y (en) * | 1994-03-10 | 1995-05-03 | 刘剑颖 | Fuel oil heating device |
| CN2435265Y (en) * | 2000-08-02 | 2001-06-20 | 黄钊仁 | Improved fuel overflow cut-off valve for locomotive |
| JP2003021247A (en) * | 2001-07-09 | 2003-01-24 | Hamai Industries Ltd | Plural connected selector valves |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006017032A (en) | 2006-01-19 |
| TW200602552A (en) | 2006-01-16 |
| CN1715635A (en) | 2006-01-04 |
| JP4276982B2 (en) | 2009-06-10 |
| TWI304113B (en) | 2008-12-11 |
| BRPI0502294A (en) | 2006-02-14 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20080416 Termination date: 20130516 |