CN102777765A - Sealing structure and fuel storage tank with the sealing structure - Google Patents
Sealing structure and fuel storage tank with the sealing structure Download PDFInfo
- Publication number
- CN102777765A CN102777765A CN2012101449080A CN201210144908A CN102777765A CN 102777765 A CN102777765 A CN 102777765A CN 2012101449080 A CN2012101449080 A CN 2012101449080A CN 201210144908 A CN201210144908 A CN 201210144908A CN 102777765 A CN102777765 A CN 102777765A
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- parts
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- bonding position
- groove
- concavity
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a sealing structure which can restrain worsening of sealing performances caused by gas or liquid and a fuel storage tank with the sealing structure. The sealing structure keeps a sealing member (41) in a mode of compressing in a combined direction and a not compression mode in a direction perpendicular to a first wall surface (32a) between a concave groove (35) of a single side surface (35a) extending from the first wall surface (32a) and a seat surface of a second component (12). In addition, a fuel storage tank (1) with a valve device (10) provided with the sealing structure is provided. According to the sealing structure, the sealing member (41) can be sealed well through a combined direction; and moreover, dimension changes caused by gas or liquid are allowed ad worsening of sealing performance is restrained. In addition, the single side surface (35a) of the concave groove (35) is formed by extending from the first wall surface (32a), thus the sealing structure with the concave groove (35) can be small as much as possible.
Description
Technical field
The present invention relates to a kind of parts clearance with two combinations through the seal construction of sealed member sealing and fuel pot with sealing structure.
Background technique
In the fuel pot of the liquefied gas as fuel of storing LPG (below, be called LPG) or dimethyl ether (below, be called DME) etc., be equipped with the control valve unit (for example patent documentation 1) of the filling or the discharge that are used to carry out this liquefied gas as fuel.Such control valve unit, its fixed base that is combined in fuel pot combines through bolt with the valve body with valve, and sealed member is installed between this fixed base and the valve body.
And; Seal construction as two parts clearances of sealing; Proposition has structure that the sealed department that on the sealed member that is made up of resin or rubber, forms overshooting shape or sealing flange guarantee seal (for example; Patent documentation 2), with structure (for example, patent documentation 3) of compression seal parts on the vertical direction of bonding position etc.
[patent documentation 1] TOHKEMY 2010-180921 communique
[patent documentation 2] TOHKEMY 2003-28302 communique
[patent documentation 3] TOHKEMY 2009-36232 communique
Fuel pot with above-mentioned seal construction, the influence that fuel pot self can be vibrated when for example being installed in the situation of vehicle.At this, when having used the situation of resinous sealed member because compare with the sealed member of rubber system not yielding, so because above-mentioned vibration causes the confining force of sealed member to be prone to absent-mindedness, sealing might descend.And when in the fuel pot with the seal construction that has used rubber system sealed member, storing the situation of above-mentioned DME fuel, desired is to have considered because the structure of the dimensional changes of the sealed member that DME fuel causes.But, on the direction vertical, in the seal construction of compression seal parts, being difficult to the dimensional changes of the sealed member of reply rubber system with bonding position, sealing might descend.On the other hand, for low cost and lightweight, require to make seal construction as far as possible little.
The present invention provides a kind of seal construction as far as possible little when suppressing sealing and descend and the fuel pot with sealing structure.
Summary of the invention
Seal construction of the present invention, it clamps sealed member between first parts that combine along the bonding position of predesignating and second parts, it is characterized in that said first parts have first wall and concavity groove, and this first wall forms along bonding position; This concavity groove is with facing to the mode of second parts groove at the concavity of bonding position opening; The face that prolongs from said first wall along bonding position is constituted as the one-sided side of groove; Said second parts have the seat surface and second wall, this seat surface the state that combines with first parts down and the concavity groove in opposite directions; This second wall forms along bonding position; At the state that combines with first parts down and the first wall adjacency; Carry out the location perpendicular to the direction of first wall of these first parts, sealed member is maintained between said concavity groove and the seat surface under the state that said first parts and second parts combine; And, be compressed on the bonding position and on direction, be not compressed perpendicular to this first wall.
In this constitutes; Because through guaranteeing sealing at bonding position compression seal parts; And; Do not compress the sealing parts perpendicular to the direction of first wall just can be in this Vertical direction contraction or expansion, so can allow owing to being exposed to the dimensional changes that gas or liquid produce, and the sealing that can suppress to cause along with this dimensional changes descends.Thus, can use well in the formation of the present invention because gas or liquid and at the rubber system sealed member that is prone to contraction or expansion perpendicular to the direction of first wall.
And; The one-sided side of the concavity groove of fitting tight parts; Because form along the bonding position extension from first wall that is used to locate; So compare with the formation of first wall with the one-sided side that this concavity groove is set with different direction in above-mentioned Vertical direction, can on this Vertical direction, make the necessary length dimension of seal construction short as far as possible, and can reach littler seal construction.
In the seal construction of the invention described above, propose such formation: sealed member is that the packing ring of rectangle constitutes by the cross section, on separately by the face of the both sides of the seat surface of the concavity groove of first parts and second parts compression, has sealing lip outstanding on bonding position.
In this structure, packing ring, so the pressure force between packing ring and concavity groove and the seat surface is high and is improved the sealing of gas or liquid etc. because each sealing lip of its both sides compresses at concavity groove and seat surface.
On the other hand, being characterized as of fuel pot of the present invention has the fuel pot of the invention described above seal construction; Above-mentioned fuel pot has control valve unit, and said control valve unit has a valve that is used to emit, charge into the inner fuel of jar, and is made up of first parts and second parts; Said first parts are formed with the concavity groove on the circumference that with the central axis along bonding position is the center; And the interior all sides through prolonging this concavity groove are formed with first wall, and said second parts are incorporated into a jar body, and; Combine with said first parts through bolt, on the circumference that with said central axis is the center, be formed with second wall.
In this constituted, control valve unit was because have seal construction of the present invention, suchly as stated guaranteed sealing through the compression to bonding position, and, allow because the dimensional changes that gas or liquid etc. cause and can suppress the decline of sealing.And, because can become the small-scale structure of above-mentioned that kind, so can make more miniaturization of control valve unit.
Fuel pot of the present invention, for example, at the sealed member that uses rubber system and when storing the situation of DME fuel, because can allow because the swelling of the sealed member that DME fuel causes, so can suppress the decline of sealing.Hence one can see that, and fuel pot of the present invention can be used as the fuel pot of storing DME fuel well.
The effect of invention
Seal construction of the present invention; Because between seat surface with the concavity groove that extends the one-sided side that forms from first wall of first parts and second parts; With to bonding position compression and sealed member is kept being installed between first parts and second parts in the mode of not compressing perpendicular to the direction of first wall; So guarantee sealing through compressing to bonding position, and, can allow that the dimensional changes that causes owing to gas or liquid etc. suppresses the decline of sealing.And the one-sided side of concavity groove is because form from the extension of first wall, so can make the seal construction with this concavity groove as far as possible little.
Fuel pot of the present invention, because the control valve unit that is made up of first parts with above-mentioned seal construction and second parts is installed, thus can guarantee sealing, and, suppress the decline of sealing.Especially can be used in the fuel pot of storing DME fuel well.And, can make the control valve unit miniaturization.
Description of drawings
Fig. 1 is the partial sectional view of fuel pot 1.
Fig. 2 is the partial sectional view of control valve unit 10.
Fig. 3 is the partial sectional view that has decomposed control valve unit 10.
Fig. 4 is the explanatory drawing of the seal construction of expression control valve unit 10.
Embodiment
Specify embodiments of the invention with accompanying drawing.
Present embodiment is that being provided in the motor that is driven by liquefied gas as fuel is the fuel pot 1 on the vehicles such as truck of power.At this, liquefied gas as fuel adopts for example LPG (LPG) fuel or DME (dimethyl ether) fuel.
The fixed base 12 of control valve unit 10; Like Fig. 2; Shown in 3, forming with the axis L is the roughly cylindric of center, and is embedded in the mounting hole 8; This mounting hole 8 is formed on the central part of the 2b of cover portion of fuel pot 1 by opening, and through it is welded on the aforementioned cover 2b of portion thorough week and goes up and be fixed outward.In the central authorities of fixed base 12 is that the center is formed with and connects the inside and outside hole of fuel pot 1 with the axis L, is formed with at the position in the jar outside in this hole to be used for the embedding hole 13 chimeric with valve body 11.And, also be formed with in the jar outside and be used for the seat surface 14 that combines with valve body 11.Have again, on fixed base 12, be formed with a plurality of tapped holes 15 of being fastenedly connected with valve body 11 of being used in seat surface 14 upper sheds.
The valve body 11 of control valve unit 10, like Fig. 2, shown in 3, it has: be used for the filling mouth 25 from outside packing fluid butane fuel; Stream 33 with the internal communication of this filling mouth 25 and fuel pot 1; Open and close the open and close valve (not shown) of this stream 33; Operate the handle 26 of this open and close valve; Be used to be installed in the assembly department 22 on the fixed base 12.This assembly department 22, by discoideus lip part 31 and integrally formed with the cylindric outstanding cylindrical part 32 that forms from the central authorities of this lip part 31, it is the concentric shape at center that lip part 31 forms with the axis L with cylindrical part 32.On lip part 31, be formed with and be used for a plurality of bolt-inserting holes 34 of being fastenedly connected with fixed base 12.And valve body 11 is fastenedly connected in fixed base 12 through inserting bolt 45 in bolt-inserting hole 34 and the bolt hole 15 that is screwed on fixed base 12.
Then, the seal construction that is used for seal valve main body 11 and fixed base 12 is described.As shown in Figure 4, lip part 31 has the bearing surface 31a perpendicular to central axis, and this bearing surface 31a is connected to the seat surface 14 of this fixed base 12 under the state that valve body 11 and fixed base 12 are combined.And it is while cylindraceous at center to be formed with outer circumferential face 32a along axis L that cylindrical part 32 forms with the axis L.And cylindrical part 32 is embedded in embedding hole 13 under the state that valve body 11 and fixed base 12 combine, and the inner peripheral surface 13a of outer circumferential face 32a that can be through cylindrical part 32 and embedding hole 13 carries out the location of valve body 11 and fixed base 12.And the outer circumferential face 32a of cylindrical part 32 and the inner peripheral surface 13a of embedding hole 13 are with the degree set internal diameter size and the boundary dimension separately of ability loading valve main body 11.
With mode, on the circumference that with the axis L is the center, be formed with concavity groove 35 at the lip part of assembly department 22 31 and cylindrical part 32 boudary portions around cylindrical part 32.Concavity 35 with face connect above-mentioned fixed base 12 mode along the axis L opening.And the slot cross-section of concavity groove 35 direction along the footpath forms rectangular-shaped, and the face that the outer circumferential face 32a from cylindric 32 prolongs along axis L constitutes interior all side 35a of concavity groove 35.Thus, the interior all side 35a that concavity groove 35 are set with diverse location in the Vertical direction of axis L compare with the structure of cylindric 32 outer circumferential face 32a, can necessary size be shortened as far as possible in this Vertical direction, and can make littler seal construction.
In concavity groove 35, be equipped with the rubber system packing ring 41 that has rectangular-shaped cross section and form with ring.This packing ring 41 remains between concavity groove 35 and the seat surface 14 under the state of valve body 11 and fixed base 12 combinations.On this packing ring 41 from each faces of the underside side of concavity groove 35 and seat surface 14 sides separately complete cycle be formed with two outstanding sealing lip 41a of concentric shape, 41a.And; Packing ring 41; Fully be shorter than the well width (perpendicular to the width of the direction of axis L) of above-mentioned concavity groove 35 with its footpath direction width, and the mode that the length that comprises the thickness of slab direction of sealing lip 41a is longer than the groove depth (along the degree of depth of axis L) of concavity groove 35 is slightly set its sectional shape.Therefore, packing ring 41 is compressed along the direction of axis L, is not compressed in the direction perpendicular to axis L, between interior all sides of packing ring 41 and concavity groove 35, and produces the space between the circumferential lateral surface 35b of packing ring 41 and concavity groove 35.Set the sectional shape of packing ring 41 like this; Its objective is through guaranteeing sealing in compression along the direction of axis L; And, thereby allow because the decline of the sealing that expansion or the contraction inhibition that is exposed to the packing ring 41 that takes place in the liquefied gas as fuel causes along with this expansion or contraction through aforementioned interspace.And having sealing lip 41a is to press for the face that increases hermetic unit to improve sealing with this.And; In an embodiment; In order further to guarantee suitable seal property, the ratio of the section area of the packing ring 41 of the section area in the cross section that is centered on by concavity groove 35 and seat surface 14 (promptly with respect to) reaches 80% or more and is discontented with the sectional shape that 100% mode is set packing ring 41 so that pack completeness.And the ratio of the amount of deformation of the packing ring 41 of the distance between concavity groove 35 bottom surfaces and the seat surface 14 (promptly with respect to) reaches the sectional shape that mode more than 20% is set packing ring 41 so that flattening ratio.
And; Interior all side 35a of the concavity groove 35 of assembling packing ring 41; Form because extend along axis L from the outer circumferential face 32a of the cylindrical part 32 that is used to locate; So compare with the formation of the outer circumferential face 32a of interior all side 35a that concavity groove 35 is set at the diverse location perpendicular to the direction of this outer circumferential face 32a and cylindrical part 32, can make the seal construction necessary size short as far as possible in this Vertical direction, and can make littler sealing structure structure.
In addition, during as the situation of the fuel pot of storing DME fuel, the rubber system packing ring 41 of the cooperation HNBR that anti-DME property is high can be by uses well with the fuel pot of present embodiment 1.
In the above-mentioned present embodiment, constitute first parts of the present invention by valve body 11.And, constitute first wall of the present invention by the outer circumferential face 32a of cylindrical part 32, constitute one-sided side of the present invention by interior all side 35a of concavity groove 35.And, constitute second parts relevant with the present invention by fixed base 12.And, constitute second wall of the present invention by the inner peripheral surface 13a of embedding hole 13.And packing ring 41 is a sealed member of the present invention.And, constitute valve of the present invention by valve body 11.In addition, valve body 11 and fixed base 12 are embedded in embedding hole and combine along axis L with cylindrical part 32.That is to say, be bonding position along the direction of axis L.And, be direction perpendicular to the outer circumferential face 32a of cylindrical part 32 perpendicular to the direction of axis L.
In addition, in the above-mentioned present embodiment, constituting and adopting the cross section is the packing ring 41 of rectangle, but other also can adopt O type circle.In addition, in the present embodiment, constitute on the control valve unit 10 that filling is used and be suitable for seal construction of the present invention, but seal construction of the present invention also can be applicable to control valve unit or the liquid level meter of supplying with usefulness.Have, as far as control valve unit, seal construction of the present invention not only only is applicable to through manually-operable also can be applicable to the control valve unit with solenoid valve to the mechanical valve device that valve opens and closes again.
The present invention is not limited to the above embodiments, and the formation beyond the relevant embodiment also can suitably be implemented in the point range of the present invention wanting.
The explanation of reference character
1: fuel pot
2: can body
10: control valve unit
11: valve body (first parts)
12: fixed base (second parts)
14: seat surface
13a: inner peripheral surface (second wall)
32a: outer circumferential face (first wall)
35: the concavity groove
35a: interior all sides (one-sided side)
41: packing ring (sealed member)
41a: sealing lip
45: bolt
L: central axis.
Claims (3)
1. seal construction, it clamps sealed member between first parts that combine along the bonding position of predesignating and second parts, it is characterized in that:
Said first parts have first wall and concavity groove, and this first wall forms along bonding position; This concavity groove is with facing to the mode of second parts groove at the concavity of bonding position opening, and the face that prolongs from said first wall along bonding position is constituted as the one-sided side of groove,
Said second parts have the seat surface and second wall, this seat surface the state that combines with first parts down and the concavity groove in opposite directions; This second wall forms along bonding position, at the state that combines with first parts down and the first wall adjacency, carries out the location perpendicular to the direction of first wall of these first parts,
Sealed member is maintained between said concavity groove and the seat surface under the state of said first parts and the combination of second parts, and, be compressed on the bonding position and on direction, be not compressed perpendicular to this first wall.
2. seal construction as claimed in claim 1 is characterized in that, sealed member is that the packing ring of rectangle constitutes by the cross section, on separately by the face of the both sides of the seat surface of the concavity groove of first parts and second parts compression, has to the outstanding sealing lip of bonding position.
3. a fuel pot is characterized in that, has the described seal construction of claim 1 or claim 2,
Said fuel pot has control valve unit, and said control valve unit has a valve that is used to emit, charge into the inner fuel of jar, and is made up of first parts and second parts,
Said first parts are formed with the concavity groove on the circumference that with the central axis along bonding position is the center, and are formed with first wall through the interior all sides that prolong this concavity groove,
Said second parts are incorporated into a jar body, and, combine with said first parts through bolt, on the circumference that with said central axis is the center, be formed with second wall.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-107754 | 2011-05-13 | ||
| JP2011107754A JP2012237410A (en) | 2011-05-13 | 2011-05-13 | Seal structure, and fuel tank having the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102777765A true CN102777765A (en) | 2012-11-14 |
Family
ID=47122792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101449080A Pending CN102777765A (en) | 2011-05-13 | 2012-05-11 | Sealing structure and fuel storage tank with the sealing structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012237410A (en) |
| CN (1) | CN102777765A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709819A (en) * | 2019-10-24 | 2021-04-27 | 和硕联合科技股份有限公司 | Sealing device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654010A (en) * | 2015-03-02 | 2015-05-27 | 刘书雄 | External connection pipe of gas tank |
-
2011
- 2011-05-13 JP JP2011107754A patent/JP2012237410A/en not_active Withdrawn
-
2012
- 2012-05-11 CN CN2012101449080A patent/CN102777765A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709819A (en) * | 2019-10-24 | 2021-04-27 | 和硕联合科技股份有限公司 | Sealing device |
| CN112709819B (en) * | 2019-10-24 | 2023-02-24 | 和硕联合科技股份有限公司 | Sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012237410A (en) | 2012-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121114 |