CN101746259A - Float-controlled valve device - Google Patents
Float-controlled valve device Download PDFInfo
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- CN101746259A CN101746259A CN200910247025A CN200910247025A CN101746259A CN 101746259 A CN101746259 A CN 101746259A CN 200910247025 A CN200910247025 A CN 200910247025A CN 200910247025 A CN200910247025 A CN 200910247025A CN 101746259 A CN101746259 A CN 101746259A
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The present invention provides a float-controlled valve device capable of preventing the intrusion of fuel foam and the like into a through hole on the side wall of the shell of the device and keeping the through hole opened, comprising: a shell (5) which is provided with a floater chamber (R1) and a ventilating chamber (R2) through a separator wall (12), wherein a bottom cover (30) is mounted at the opening of the lower portion of the shell; a float-controlled valve (50); and a communicating opening (13) which forms a valve base (13a) contacted with/separated from the float-controlled valve (50); wherein a through hole (20) is formed on the side wall (11) of the shell (5) to communicate the floater chamber (R1) with a fuel tank; a blocking wall (35), which is formed on the bottom cover (30) and upwards extends from the periphery of the bottom cover (30), is a given interval away from the side wall (11) and disposed on the outer side of the through hole (20); and a support sheet (25) is formed on the side wall (11) of the shell (5) and erects from above the through hole (20) to support the front end portion of the blocking wall (35).
Description
Technical field
The present invention relates to a kind of float-controlled valve device that is applicable to shutoff valve in the Fuel Tank that is installed in automobile etc. etc.
Background technology
In the Fuel Tank of automobile, be provided with shutoff valve (being also referred to as upset safety protective valve (roll-over valve)); it is used for fuel vapour is discharged to filtering tank (canister); and; in running car, produce and rock more greatly or during automobile roll, the opening closure that will be communicated with and prevent that fuel is to external leaks with filtering tank.
As existing shutoff valve, for example use a kind of shutoff valve as described below, it has: housing, its via partition wall below the float bowl be communicated in the Fuel Tank is set, the breather chamber of setting and Fuel Tank external communications is equipped with bottom (lowercap) in lower opening portion up; Float valve, but its oscilaltion be configured in the described float bowl; And connected entrance, it is formed on the described partition wall, to be communicated with described float bowl and described breather chamber, forms the valve seat that contacts/separate with described float valve on its lower surface periphery, on the sidewall of described housing, form through hole, be used to be communicated with in described float bowl and the described Fuel Tank.
But for above-mentioned shutoff valve, turning etc. at automobile makes under the bigger situation of fuel shaking amplitude in the Fuel Tank, might enter fiercely from through hole by fuel, forms the spittle etc. and invades the breather chamber side by connected entrance.And the fuel that enters might flow to the filtering tank side owing to the inside and outside difference of pressure of Fuel Tank, becomes a reason of fuel leak.
The various technology of the fuel of above-mentioned fuel leak reason to the intrusion of breather chamber side that are used to suppress to become have been proposed.For example, a kind of shutoff valve is disclosed in following patent documentation 1, it is configured to, float valve housing (cover body) is accommodated in setting, pasta in Fuel Tank rises to more than or equal to float valve under the situation of specified amount and rises, stop the fuel in the Fuel Tank to flow out valve seat peristome obturation, and, near the upper end of described housing sidewall, run through and form through hole (discharge orifice), in addition, from the upper inside surface of described housing, keep specified gap and barrier (shear wave defence wall) vertically is set with respect to housing sidewall, this barrier extends on the lower position of the outer openings portion that is positioned at described through hole.
Patent documentation: No. 3337739 communique of Japan's patent
Summary of the invention
Barrier in the above-mentioned patent documentation 1, because its upper end links with the top of housing, the lower end becomes free end, opening between the sidewall periphery of week and housing in the lower end of barrier, so exist the fuel spittle to enter and invade the through hole, enter the situation in the housing from this lower opening portion.
Thus, the object of the present invention is to provide a kind of float-controlled valve device, it can prevent more effectively that fuel from entering fiercely from the through hole of housing sidewall, can suppress the fuel spittle etc. and invade the breather chamber side by connected entrance.
To achieve these goals, the 1st mode of the present invention provides a kind of float-controlled valve device, it is characterized in that having:
Housing, it is via partition wall, below the float bowl that is communicated in the Fuel Tank is set, the breather chamber with the Fuel Tank external communications is set up, at lower opening portion place bottom is installed;
Float valve, but its oscilaltion be configured in the described float bowl; And
Connected entrance, it is formed on the described partition wall, and to be communicated with described float bowl and described breather chamber, its lower surface periphery forms the valve seat that contacts/separate with described float valve,
Form through hole on the sidewall of described housing, it is communicated with in described float bowl and the described Fuel Tank,
Form barrier on described bottom, its periphery from bottom is extended upward, and keeps specified gap between the described sidewall and be configured in the outside of described through hole,
Be formed with supporting blade on the sidewall of described housing, its top from described through hole erects, and supports the leading section of described barrier.
According to foregoing invention, if the level of fuel in the Fuel Tank surpasses specified altitude, then flow into the buoyancy that produces in the float bowl by fuel, float valve is risen, with be formed on valve seat butt on the partition wall and inaccessible peristome, thereby can prevent that fuel from flowing into vent chamber by connected entrance.
In addition, owing to being formed with barrier across specified gap in the through hole outside that is formed on the housing sidewall, even so since vehicle rock or turn, make the fuel in the Fuel Tank rock and collide with sidewall, also can utilize barrier and prevent fuel and through hole direct impact, can prevent that fuel from entering in the float bowl fiercely from through hole, thereby form the fuel spittle and invade the breather chamber side from the connected entrance that is arranged on the partition wall.
In addition, because barrier extends upward from the periphery of bottom, be configured in the outside of through hole, so the below of through hole also is blocked wall and covers, therefore, even by vehicle rock or turning etc. is rocked fuel and is splash the fuel spittle from the below, can prevent that also the fuel spittle fuel from entering in the through hole.
In addition, because supporting blade erects from the top of through hole, so valve gear tilts being accompanied by vehicle roll, the situation that the amplitude that the valve gear top teetertotters near level of fuel or fuel is bigger etc. can prevent that also fuel from invading from the through hole top down.
In addition, because the supporting blade that the leading section of barrier is formed on the sidewall of housing supports, so can prevent barrier bending damage.
The 2nd mode of the present invention is to provide a kind of float-controlled valve device, and it forms chimeric slit or the recess wherein of leading section that makes described barrier on described supporting blade in described the 1st invention.
According to foregoing invention,,, keep the gap between barrier and the through hole reliably so can prevent reliably that barrier from lodging to the inside or bending laterally because the leading section of barrier is entrenched in the slit or recess that is formed on the supporting blade.Thus, can avoid following problems, that is, barrier lodges and in the side wall side of housing the through hole of housing sidewall is blocked.
The 3rd mode of the present invention provides a kind of float-controlled valve device, it is in the described the 1st or the 2nd invention, described supporting blade is the cap shape from the sidewall protrusion of described housing, its front end bends downwards and forms the cover plate wall, keep specified gap between this cover plate wall and the described sidewall, and cover the outside of described through hole and extend a side of this cover plate wall and the binding of described sidewall, opposite side opening.
According to foregoing invention, by protrusion be the cap shape part, cover cover plate wall that the outside of through hole extends and the binding wall that covers cover plate wall one side, can improve the rigidity of barrier and guarantee the sidewall of housing and the space between the barrier, and prevent that effectively fuel from entering fiercely from through hole.
In addition, one side of connection cover wooden partition so can improve its rigidity, can support the leading section of barrier reliably because sidewall is by linking wall.In addition, because the opposite side opening of cover plate wall, so can make air or fuel be easy to pass through via through hole.
The 4th mode of the present invention provides a kind of float-controlled valve device, it is in described the 3rd invention, being positioned on the position below the cover plate wall of described sidewall, in the both sides of described barrier flange is set vertically, this flange covers the gap between the sidewall of described barrier and described housing.
According to foregoing invention, owing to vertically be provided with flange in the both sides of barrier, with the gap between the sidewall that covers barrier and housing, so the spittle of fuel etc. are difficult to invade the through hole from the both sides of barrier.
The 5th mode of the present invention provides a kind of float-controlled valve device, in its invention any one in the described the 1st～4, the lower, outer perimeter tight joint of the base end part of described barrier and the sidewall of described housing, the part that is positioned at the described through hole outside of this barrier has specified gap with respect to the sidewall of described housing.
According to foregoing invention, because the lower, outer perimeter tight joint of the base end part of barrier and the sidewall of housing, so can securely bottom be installed on the housing, and, by making the part that is positioned at the through hole outside have specified gap, and can guarantee the turnover of fuel or air via through hole with respect to sidewall.
The 6th mode of the present invention provides a kind of float-controlled valve device, and it on the sidewall periphery of described housing, forms internal diameter direction to housing with the recessed depressed part of prescribed depth in the described the 1st～5 in any invention, forms described through hole on this depressed part.
According to foregoing invention,,, can realize the densification of barrier so, make the internal diameter formation of barrier on one side near housing on one side can keep gap between barrier and the through hole because the formation position that can make through hole is to the internal side diameter skew of housing.In addition, be formed on the depressed part that obtains with the prescribed depth depression, owing to through hole so can make the fuel spittle or fuel further be difficult to enter in the through hole.
The effect of invention
According to the present invention, owing to form barrier in the through hole of the housing sidewall outside, and the below of through hole also is blocked wall and covers, so even fuel rocks and splashes the spittle from the below, can prevent that also the spittle from entering in the through hole.And, because supported support of leading section of barrier, so can prevent the barrier bending.
Description of drawings
Fig. 1 is the exploded perspective view of an embodiment of expression float-controlled valve device of the present invention.
Fig. 2 be this float-controlled valve device want portion's amplification oblique drawing.
Fig. 3 is the amplification oblique drawing that constitutes the bottom of this float-controlled valve device.
Fig. 4 is the section-drawing of this float-controlled valve device.
Fig. 5 is a section-drawing this float-controlled valve device and cutting plane Fig. 4 quadrature.
Fig. 6 represents this float-controlled valve device on the cutting plane identical with Fig. 5, the section-drawing of the state after float valve rises to greatest extent.
Fig. 7 is that the VII-VII of Fig. 5 vows the section-drawing shown in the sight line.
Fig. 8 is the section-drawing of other embodiment of expression float-controlled valve device of the present invention.
Fig. 9 be this float-controlled valve device want portion's amplification oblique drawing.
The specific embodiment
Below, with reference to Fig. 1～7, describe at an embodiment that float-controlled valve device of the present invention is applied in the shutoff valve.
As shown in Figure 1, this float-controlled valve device 1 (hereinafter referred to as " valve gear 1 ") has housing 5, and this housing 5 has: housing body 10; Bottom 30, it is installed in the lower opening portion place of this shell main body 10; And top cover 40, it is installed in the top of shell main body 10.
Shown in Fig. 4,5, the inner space that surrounds by housing body 10 and bottom 30, but becoming the float bowl R1 of oscilaltion ground configuration aftermentioned float valve 50, the inner space that is surrounded by housing body 10 and top cover 40 forms breather chamber R2.Described float bowl R1 is communicated in the Fuel Tank, and described breather chamber R2 is communicated with the stream that arrival is disposed at the exterior filtering tank of Fuel Tank.Describe at each structure member below.
Shown in Fig. 1,4,5, housing body 10 has the partition wall 12 of the upper surface of the sidewall cylindraceous 11 of lower opening and inaccessible housing body 10, run through formation connected entrance 13 in the central authorities of this partition wall 12, this connected entrance is communicated with described float bowl R1 and breather chamber R2.In addition, the lower surface periphery of described connected entrance 13 is set to cylindricly so that specified altitude is outstanding, forms the valve seat 13a that contacts/separate with the valve head 51 of float valve 50 described later.
On a position of the periphery of housing body 10, be provided with the valve body resettlement section 15 of case shape.On the diapire of this valve body resettlement section 15, be formed with the peristome 15a (with reference to Fig. 4) that contacts/separate with ball valve V.In this valve body resettlement section 15, accommodate ball valve V, and accommodate the 1st preloading spring S1, its with ball valve V to peristome 15a side pretension, when making peristome 15a flat by obturation.In addition, in valve body resettlement section 15, connection pipe 16 is communicated with the inner space of valve body resettlement section 15 and forms, and the pipe arrangement that this connection pipe 16 is used for being connected with not shown filtering tank is connected.In addition, when the pressure in Fuel Tank rose to more than or equal to specified value, described ball valve V resisted the predetermincd tension of the 1st preloading spring S 1 and leaves peristome 15a, realized the function that fuel vapour is discharged outside Fuel Tank.
Above the upper surface of the partition wall 12 of housing body 10 and described valve body resettlement section 15, protrude the lid installation portion 17 that is provided with the frame shape.Top cover 40 is installed at the peristome place above this lid installation portion 17.In addition, extend in a side opposite of lid installation portion 17 support snap-latch piece 18 is set with described connection pipe 16, protrude the engaging pawl 18a that is provided with from the front end of support snap-latch piece below and engage, valve gear 1 is installed on the Fuel Tank T via this support B with the lateral border of support B shown in Figure 1.
In addition, below the sidewall 11 of housing body 10, along circumferentially protruding a plurality of snap fit tabs 19 are set, they engage with the connecting hole 37a (aftermentioned) of bottom 30.
As Fig. 2 and Fig. 5～shown in Figure 7, on the sidewall 11 of this housing body 10, form through hole 20, it is communicated with in described float bowl R1 and the Fuel Tank.In the present embodiment, on sidewall 11 cylindraceous 2 positions relative, form a plurality of manholes 20 in position with described connection pipe 16 and support snap-latch piece 18 quadratures along Zhou Fangxiang.
As shown in Figure 2, through hole 20 on 2 above-mentioned relative positions of sidewall 11 with about 2 row and be arranged above and below and form, have through hole 20a, the 20a of topmost and arrange thereunder through hole 20b, on each position of 2 above-mentioned relative positions of sidewall 11, be provided with respectively and amount to 6 through holes.
In addition, be formed with supporting blade 25 on the sidewall 11 of housing body 10, it supports the barrier 35 of bottom 30 described later.As shown in Figure 2, this supporting blade 25 has cap shape lug 26 and cover plate wall 27, this cap shape lug 26 is the cap shape from the outer peripheral face protrusion that is positioned at top through hole 20a top of sidewall 11, this cover plate wall 27 bends downwards from the front end of this cap shape lug 26, and sidewall 11 between cover top through hole 20a when keeping specified gap and extend.
The cap shape lug 26 of present embodiment vertically is provided with to the external diameter direction from the outer peripheral face of sidewall 11, forms the top through hole 20a of covering pair of right and left, the size of 20a along the circumferential width of sidewall 11.In addition, described cover plate wall 27 bends with respect to these cap shape lug 26 quadratures with the width identical with cap shape lug 26, extends downwards, and forms the gap of fixed width between the sidewall 11.
In addition, as shown in Figure 1, on cap shape lug 26, connect formation slit 26a along its Width, its leading section with barrier 35 engages.In addition, this slit 26a also can be that the lower surface from cap shape lug 26 begins the recess that forms with prescribed depth, as long as can be chimeric with the leading section of barrier 35.In addition, a side 27a of described cover plate wall 27 and described sidewall 11 link and inaccessible, and opposite side 27b does not link and opening (with reference to Fig. 2,7) with sidewall 11.In addition, on cover plate wall 27, forming pair of holes 27c, 27c on a pair of top through hole 20a on the sidewall 11, the corresponding position of 20a with being arranged on.
The leading section of barrier 35 is entrenched in (with reference to Fig. 5,6) among the slit 26a that is formed on the cap shape lug 26.Be associated with it, described sidewall 11 be positioned at cover plate wall 27 below, along the circumferential both sides of the sidewall 11 of barrier 35 flange 28,28 is set vertically respectively, their cover the gap between the sidewall 11 of barrier 35 and housing body 10. Flange 28,28 in the present embodiment forms, and is positioned on the position apart from the Width both sides specified gap of barrier 35 each a pair of 2 groups of lower through-hole 20b of configuration up and down about it highly covers.
Be installed in the bottom 30 at the lower opening portion place of the housing body 10 that forms above-mentioned structure, has circular base plate 31, this base plate 31 be formed with can make that fuel passes through see through hole 31a, be provided with spring support protrusion 33 from central authorities' protrusion of this base plate 31, its end to the 2nd preloading spring S2 is supported.
And, on base plate 31, forming barrier 35, its outer peripheral edges from base plate are extended upward, and keep specified gap between the described sidewall 11, are configured in the outside of a plurality of through holes 20.In the present embodiment, a pair of barrier 35,35 extends in the relative position that makes progress in week upward from the outer peripheral edges of base plate 31.
Each barrier 35 has: base end part 35a, the lower, outer perimeter tight joint of the sidewall 11 of itself and described housing body 10; And extension 35b, it is from the upper end periphery of this base end part 35a, while guarantee and sidewall 11 between specified gap extend upward, become the part in the outside that is positioned at described through hole 20.The axis parallel ground of this extension 35b and housing body 10 extends upward, and keeps certain interval between the described sidewall 11.The leading section of this extension 35b is entrenched among the slit 26a of described supporting blade 25, and makes barrier 35 supported.
In addition, on the outer peripheral edges of base plate 31, between described a pair of barrier 35,35, vertically be provided with a plurality of engaging walls 37, they cover on the lower, outer perimeter of sidewall 11 of housing body 10, and have the connecting hole 37a that engages with described snap fit tabs 19.
In described float bowl R1, the float valve 50 of being accommodated slidably forms the substantial cylindrical shape, surface central authorities protrude the valve head 51 that contacts/separate with described valve seat 13a are set from it, on the periphery of float valve 50, form a plurality of guiding ribs 52 that extend up and down, all moving contacts in the sidewall 11 of they and housing body 10 are led to the sliding action of float valve 50.
And, described float valve 50 as described below being configured in the float bowl R1.That is, in the set recess 53 of the bottom center of float valve 50, insert under the state of the 2nd preloading spring S2, float valve 50 is inserted in the float bowl R1 of housing body 10.
Then, the end of the 2nd preloading spring S2 is supported by spring support protrusion 33, the lower opening portion to housing body 10 is pressed into bottom 30.Then, make the lower, outer perimeter of the sidewall 11 of housing body 10 be stuck wall 37 coverings, and base end part 35a tight joint with barrier 35, the snap fit tabs 19 of housing body 10 is engaged with the connecting hole 37a of bottom 30, and the leading section of barrier 35 is entrenched among the slit 26a of cap shape lug 26 (with reference to Fig. 5,6).Its result, barrier 35 with the state setting of the outside of sidewall 11 across specified gap, cover the outside of a plurality of through hole 20a, 20b by its extension 35b, and, the base end part 35a of the periphery tight joint of utilization and sidewall 11, under the state below the covering through hole 20, bottom 30 is installed in the lower opening portion place (with reference to Fig. 2,5,6) of housing body 10.
As mentioned above, because the lower, outer perimeter tight joint of the sidewall 11 of the base end part 35a of the barrier 35 in the present embodiment and housing body 10, so can securely bottom 30 be installed on the housing body 10.
In addition, because the leading section of barrier 35 is entrenched among the slit 26a that forms on the supporting blade 25, so can prevent barrier 35 (near the direction of the sidewall 11 of housing body 10) lodging to the inside or (away from the direction of the sidewall 11 of housing body 10) bending laterally reliably, keep the gap between barrier 35 and the through hole 20 reliably.
In addition, owing to constitute the cover plate wall 27 of the supporting blade 25 that the leading section to barrier 35 supports, the sidewall 11 of one side and housing body 10 links (with reference to Fig. 2,7), so can improve the rigidity of supporting blade 25, can support the leading section of barrier 35 reliably.
In addition, for barrier 35, it is supported because the lower, outer perimeter of the sidewall 11 of its base end part 35a and housing body 10 is combined closely, and supported 25 of leading section supports, so the both ends of barrier 35 are all supported, can prevent reliably that barrier 35 from bending laterally or the distortion of lodging to the inside etc. or deflection etc., can guarantee the gap between barrier 35 and the through hole 20 reliably.
As mentioned above, by bottom 30 is installed on housing body 10, is configured in the float bowl R1 and float valve 50 accommodated slidably, and between the base plate 31 of float valve 50 and bottom 30, the 2nd preloading spring S2 is installed.Float valve 50 by deadweight compression the 2nd preloading spring S2, and is positioned on the base plate 31 under the state that is not immersed in the fuel.In addition, because vehicle roll etc. rises fuel, when float valve 50 was immersed in the fuel, the 2nd preloading spring S2 applied predetermincd tension upwards with the buoyancy that float valve 50 is produced to float valve 50.
Below, the action effect of this valve gear 1 is described.
Engage with the pawl 18a that engages of support snap-latch piece 18 by the lateral border that is welded in the support B on the Fuel Tank T, thereby valve gear 1 is installed on the support B, valve gear 1 is installed in the inside of Fuel Tank T.In addition, connecting pipings on the connection pipe 16 of valve gear 1, this pipe arrangement links with the exterior not shown filtering tank that is configured in Fuel Tank T.
In addition, do not rock at vehicle, the liquid level of the fuel in the Fuel Tank does not tilt, float valve 50 is not impregnated under the state in the fuel, compress the 2nd preloading spring S2 by the deadweight of float valve 50, the valve head 51 of float valve 50 separates with valve seat 31a, and connected entrance 13 is opened (with reference to Fig. 4,5).
Under above-mentioned state, if vehicle turns to or the inclination amplitude is big the liquid level of fuel F is risen, float valve 50 is immersed in the fuel more than or equal to specified altitude, then to float valve 50 effect buoyancy, and predetermincd tension by the 2nd preloading spring S2, float valve 50 floats, and as shown in Figure 6, valve head 51 is with valve seat 13a butt and inaccessible connected entrance 13.Its result, fuel is prevented from by the situation that connected entrance 13 flows in the breather chamber R2, can prevent the external leaks of fuel to Fuel Tank T reliably.
In addition, in vehicle ' on rough road and up-down vibration or double swerve, perhaps under the situation of sharply turning, fuel F in the Fuel Tank T rocks or splashes small spittle shape fuel spittle Fa etc. from level of fuel as shown in Figure 5, and these might collide on the sidewall 11 of housing body 10.
Relative therewith, because in this valve gear 1, a plurality of through hole 20a on the sidewall 11 that is formed at housing body 10, the outside of 20b, form barrier 35 across specified gap, so as shown in Figure 5, even fuel F that rocks or fuel spittle Fa collision can prevent that also their direct impacts are on a plurality of through hole 20a, 20b on the sidewall 11 of housing body 10.Its result can prevent that fuel from entering in the float bowl R1 fiercely from a plurality of through hole 20a, 20b, enters breather chamber R2 side from the connected entrance 13 that is arranged on the partition wall 12.
In addition, as mentioned above because barrier 35 is installed in the below of housing body 10, extend upward from the periphery of bottom 30, be configured in the outside of a plurality of through hole 20a, 20b, so the below of a plurality of through hole 20a, 20b also is blocked wall 35 and covers, therefore, even, can prevent that also it from entering in a plurality of through hole 20a, the 20b because rocking or turning to etc. of vehicle rocked fuel F and splash fuel spittle Fa from the below.
In addition, in the present embodiment, owing to erecting from the top of top through hole 20a, cap shape lug 26 covers this top through hole 20a, even the fuel F amplitude that teetertotters is bigger so be accompanied by vehicle roll, thereby fuel is fallen from the top of cap shape lug 26, can prevent that also fuel F from directly invading among through hole 20a, the 20b fiercely.
In addition, because the supporting blade 25 that the leading section of barrier 35 is formed on the sidewall 11 of housing body 10 supports, bend laterally so can prevent barrier 35.Its result can suppress barrier 35 and damage and prevent that through hole 20 from exposing, and can prevent that the fuel spittle Fa etc. from invading from through hole 20.In addition, owing to also can prevent that barrier 35 from lodge to the inside, so guarantee gap between the sidewall 11 of barrier 35 and housing body 10, maintenance through hole 20 is the state of opening.Its result can keep through hole 20 to be the state of opening, shown in the arrow of Fig. 7, can make reliably through hole 20 as will flow into liquid fuel F in the float bowl R1 discharge, and the gangway of fuel vapour or air etc. work.
And the supporting blade 25 of present embodiment by the cover plate wall 27 of cap shape lug 26 with the outside that covers through hole 20, can prevent that fuel F and the fuel spittle Fa from entering in the float bowl R1 of housing body 10 from through hole 20.In addition, because a side 27a of described cover plate wall 27 and the sidewall of housing body 10 11 link, so opposite side 27b opening is as shown in Figure 7, can guarantee the gangway of fuel and air reliably, can make fuel, fuel vapour or air be easy to pass through via through hole 20.
In addition, in the present embodiment, below the described cover plate wall 27 of the sidewall 11 of housing body 10, and vertically be provided with flange 28,28 in the Width both sides of barrier 35, gap between the sidewall 11 of covering barrier 35 and housing body 10 is so can make fuel F and fuel spittle Fa be difficult to invade through hole 20 from the both sides of barrier 35.
But, rise and utilize under the state of float valve 50 inaccessible connected entrances 13 situation that also exists the pressure in the Fuel Tank T to raise at the liquid level of fuel F.In this case, because the ball valve V that the peristome 15a of valve body resettlement section 15 is closed resists the predetermincd tension of the 1st preloading spring S1 and slides upward, 15a opens with peristome, fuel vapo(u)r is discharged outside Fuel Tank, so the pressure in the Fuel Tank is remained specified value.
And the valve gear 1 that forms above-mentioned structure fits together and is configured in Fuel Tank with the Fuel Tank anti-overflow valve sometimes.Promptly, in Fuel Tank, except the valve gear 1 that works as shutoff valve, also dispose the Fuel Tank anti-overflow valve, if level of fuel reach a certain height when refueling, then the Fuel Tank anti-overflow valve is closed, and (bent tube) is recycled to the assigned position place of fuel filler pipe with fuel by not shown bend pipe, and the supply of fuel is stopped.
And, set the electrolyte level of valve gear 1 (shutoff valve) when closing, the electrolyte level when closing than Fuel Tank anti-overflow valve exceeds predetermined distance, to prevent that valve gear 1 (shutoff valve) cuts out before the Fuel Tank anti-overflow valve is closed.That is, before the Fuel Tank anti-overflow valve is closed and stopped oiling, need keep the state that can make fuel vapour or air exhaustion, that is, keep through hole 20 and be the state of opening by the float bowl R1 of housing 5.
Corresponding with above-mentioned requirements, in valve gear involved in the present invention 1, can guarantee the gap between the sidewall 11 of barrier 35 and housing 5 as mentioned above, keeping through hole 20 is the state of opening.
Other embodiment of float-controlled valve device of the present invention has been shown in Fig. 8,9.In addition, the part mark same numeral at substantially identical with above-mentioned embodiment omits its explanation.
The float-controlled valve device 1a of present embodiment (hereinafter referred to as " valve gear 1a "), on the periphery of the sidewall 11 of the housing body 10 that constitutes housing 5, formation with the recessed depressed part 11a of prescribed depth, forms described through hole 20 in the bottom of this depressed part 11a to the internal diameter direction of housing body 10.11a is corresponding with this depressed part, week in the sidewall 11 of housing body 10, and on the position that forms depressed part 11a, form the shape of protruding with specified altitude to internal diameter direction.
According to above-mentioned embodiment, because the formation position of through hole 20 is compared with described embodiment, can be to the internal side diameter skew of housing body 10, so can keep the gap between barrier 35 and the through hole 20 on one side, make the internal diameter formation of the extension 35b of barrier 35 on one side near housing body 10, its result can realize the densification of barrier 35.In addition, because through hole 20 is formed on the bottom with the recessed depressed part 11a of prescribed depth, so can make fuel spittle Fa and fuel further be difficult to enter in the through hole 20.
Claims (6)
1. float-controlled valve device is characterized in that having:
Housing, it is via partition wall, below the float bowl that is communicated in the Fuel Tank is set, the breather chamber with the Fuel Tank external communications is set up, at lower opening portion place bottom is installed;
Float valve, but its oscilaltion be configured in the described float bowl; And
Connected entrance, it is formed on the described partition wall, and to be communicated with described float bowl and described breather chamber, its lower surface periphery forms the valve seat that contacts/separate with described float valve,
Form through hole on the sidewall of described housing, it is communicated with in described float bowl and the described Fuel Tank,
Form barrier on described bottom, this barrier extends upward from the periphery of bottom, and keeps predetermined gap between the described sidewall and be configured in the outside of described through hole,
Be formed with supporting blade on the sidewall of described housing, its top from described through hole erects, and supports the leading section of described barrier.
2. float-controlled valve device as claimed in claim 1 is characterized in that,
On described supporting blade, form chimeric slit or the recess wherein of leading section that makes described barrier.
3. float-controlled valve device as claimed in claim 1 or 2 is characterized in that,
Described supporting blade is the cap shape from the sidewall protrusion of described housing, its front end bends downwards and forms the cover plate wall, keeps specified gap between this cover plate wall and the described sidewall, and covers the outside of described through hole and extend, one side of this cover plate wall and described sidewall link, the opposite side opening.
4. float-controlled valve device as claimed in claim 3 is characterized in that,
Being positioned on the position below the cover plate wall of described sidewall, in the both sides of described barrier flange is set vertically, this flange covers the gap between the sidewall of described barrier and described housing.
5. as each described float-controlled valve device in the claim 1 to 4, it is characterized in that,
The lower, outer perimeter tight joint of the base end part of described barrier and the sidewall of described housing, the part that is positioned at the described through hole outside of this barrier has specified gap with respect to the sidewall of described housing.
6. as each described float-controlled valve device in the claim 1 to 5, it is characterized in that,
On the sidewall periphery of described housing, form internal diameter direction to housing with the recessed depressed part of prescribed depth, on this depressed part, form described through hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008318531A JP5123837B2 (en) | 2008-12-15 | 2008-12-15 | Float valve device |
| JP2008-318531 | 2008-12-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101746259A true CN101746259A (en) | 2010-06-23 |
| CN101746259B CN101746259B (en) | 2014-03-12 |
Family
ID=42348326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910247025.0A Expired - Fee Related CN101746259B (en) | 2008-12-15 | 2009-12-15 | Float-controlled valve device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5123837B2 (en) |
| CN (1) | CN101746259B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793653A (en) * | 2015-04-15 | 2015-07-22 | 哈尔滨飞机工业集团有限责任公司 | Testing oil tank liquid level control device |
| CN109311392A (en) * | 2016-06-20 | 2019-02-05 | 沃尔沃卡车集团 | Valve module |
| 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 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2444177A1 (en) | 2010-10-20 | 2012-04-25 | Vesuvius Group S.A | Pouring tube for liquid metal |
| JP5888302B2 (en) * | 2013-09-12 | 2016-03-22 | トヨタ自動車株式会社 | Valve and fuel tank structure |
| JP6177152B2 (en) * | 2014-01-31 | 2017-08-09 | 株式会社Fts | Filler pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5568823A (en) * | 1994-03-31 | 1996-10-29 | Aisin Seiki Kabushiki Kaisha | Fuel control valve located in a fuel tank |
| CN2358315Y (en) * | 1998-02-27 | 2000-01-12 | 邢宝山 | Multifunctional automatic opening and closing water tap |
| JP2002285929A (en) * | 2001-03-26 | 2002-10-03 | Nifco Inc | Over-refueling preventive valve |
| JP2008240711A (en) * | 2007-03-29 | 2008-10-09 | Toyoda Gosei Co Ltd | Fuel cutoff valve |
-
2008
- 2008-12-15 JP JP2008318531A patent/JP5123837B2/en not_active Expired - Fee Related
-
2009
- 2009-12-15 CN CN200910247025.0A patent/CN101746259B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5568823A (en) * | 1994-03-31 | 1996-10-29 | Aisin Seiki Kabushiki Kaisha | Fuel control valve located in a fuel tank |
| CN2358315Y (en) * | 1998-02-27 | 2000-01-12 | 邢宝山 | Multifunctional automatic opening and closing water tap |
| JP2002285929A (en) * | 2001-03-26 | 2002-10-03 | Nifco Inc | Over-refueling preventive valve |
| JP2008240711A (en) * | 2007-03-29 | 2008-10-09 | Toyoda Gosei Co Ltd | Fuel cutoff valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793653A (en) * | 2015-04-15 | 2015-07-22 | 哈尔滨飞机工业集团有限责任公司 | Testing oil tank liquid level control device |
| CN109311392A (en) * | 2016-06-20 | 2019-02-05 | 沃尔沃卡车集团 | Valve module |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5123837B2 (en) | 2013-01-23 |
| CN101746259B (en) | 2014-03-12 |
| JP2010137818A (en) | 2010-06-24 |
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