CN1051146A - Floor Pump - Google Patents
Floor Pump Download PDFInfo
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- CN1051146A CN1051146A CN 90106719 CN90106719A CN1051146A CN 1051146 A CN1051146 A CN 1051146A CN 90106719 CN90106719 CN 90106719 CN 90106719 A CN90106719 A CN 90106719A CN 1051146 A CN1051146 A CN 1051146A
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Abstract
A kind of Floor Pump that is specifically designed to bicycle comprises that one forms first elongated tubular of chamber and shell, and a usefulness that is connected with the interior piston of first pipe makes piston reciprocating second elongated tubular in chamber.One flexible pipe from piston protruding and pass second the pipe, its open end is connected with valve connector.Removable the turning up the soil of first pipe and second pipe is installed together so that Floor Pump can be used as the use of vehicle seat pole.Floor Pump has one first valve between atmosphere and chamber closed end on the piston outside, also has one second valve of piston inboard between chamber closed end and flexible pipe.The structure of first valve is designed to can produce better sealing effectiveness along with the pressure in the chamber closed end increases.
Description
The present invention relates to pump, particularly a kind of manual pump that is installed on the bicycle.
Now design multiple manual pump and be used for bicycle.Many this Floor Pumps utilize the part of bicycle rack as Floor Pump shell and chamber.The major advantage of these Floor Pumps of great majority is not will Floor Pump to take off from bicycle can carry out M/C.In a lot of situations, vehicle seat combines with an arm that has the Floor Pump of piston, to allow the crank motion of Floor Pump piston.
The Floor Pump of these types has some shortcomings.At first, because vehicle frame has constituted the part of Floor Pump, Floor Pump can't take off from bicycle.In many cases, this class Floor Pump has many parts to be installed in the frame member of solder together, if do not damage bicycle rack or finish coat, just is difficult to maybe can't touch these parts when repairing.The tubing that most of bicycle racks adopt is thinner, has only general business level quality.Such tubing weakens and is corroded easily in the field strength that perforation is arranged, such as the place at installation Floor Pump joint component.
The Floor Pump that also has some to be used for bicycle has independently Floor Pump shell, can take off from the bicycle rack that holds Floor Pump.The major defect of this Floor Pump must take off from bicycle rack when being operation.
Another major defect of these manual pumps is that its compressed capability is limited.In fact, all these Floor Pumps adopt a kind of flexible partition as piston seal, and when the Floor Pump chamber sucked portion of air, it allowed air to pass through, and it stops air to be run out of when the Floor Pump chamber inner pressure contracts air.Yet, about 100 pounds of this design-calculated maximal pressure compression pressure/per square inch, in addition littler, in case surpass, seal dissepiment will leak gas.
On the one hand, manual pump of the present invention comprises the shell of one one end osed top Floor Pump chamber, a piston component that has the piston that is positioned at chamber, one has first end that is connected with piston and the connecting arm of second opposed end, an air by-pass passage that passes piston and roughly extend vertically.Floor Pump also comprises being used for manually to make the device of the piston reciprocates in the chamber of being connected with connecting arm; One is contained in first check valve apparatus on the piston, closes when piston this valve when first moves axially, and the air in the closed end of chamber is compressed, and when piston leaves the chamber closed end vertically the closed end of its permission air admission chamber; One second check valve apparatus, it allows air to enter air by-pass passage from chamber when first moves axially when piston, and it stops air to enter chamber by air by-pass passage when piston is mobile in opposite direction.
On the other hand, high pressure hand-operated Floor Pump of the present invention comprises a shell that has the Floor Pump chamber, a piston that is positioned at chamber, being used to of being connected with piston makes piston reciprocating manual unit in chamber, and a check valve apparatus that is positioned on the piston.This check valve assembly comprises an annular valve door part and in order to hold the annular groove device that circumferentially extends along outer surface of piston of annular valve door part on the piston.The axial dimension of the part of annular groove device is greater than the maximal axial extension of the adjacent part of valve part, the adjacent part of valve part can move axially along that part of of annular groove device like this, check valve apparatus is opened, to allow fluid by this check valve apparatus.Check valve apparatus also comprises the circular cone valve seat that is positioned on axial end of annular groove device.When the annular valve door part was located on the conical surface valve seat, check valve apparatus was closed.
On the one hand, bicycle pump of the present invention comprises one first elongated tubular again, and its length and external diameter are enough to make it removably to be contained in the saddle tube of bicycle rack.It also comprises one second elongated tubular, and its length is shorter than first elongated tubular, and external diameter is littler than first elongated tubular, and the length of second pipe and external diameter are enough to make it removably to be contained in and to be clamped in the supporting clamping ring of bicycle saddle.First pipe and second pipe both one of constitute the Floor Pump chamber, another is connected with the interior piston of chamber, uses so that piston reciprocates.Floor Pump also comprises and is used for an air hose that the removable device that is fixed together of turning up the soil of first and second elongated tubulars, are extended from second elongated tubular and a valve connector that is positioned at the air hose open end.
In the accompanying drawing:
Fig. 1 is the isometric view that is installed in first embodiment of the manual pump on the bicycle;
Fig. 2 is the lateral plan after the Floor Pump among Fig. 1 takes off from bicycle;
Fig. 3 is the cutaway view of Floor Pump in compression stroke among Fig. 1 and Fig. 2;
Fig. 4 is the cutaway view in induction stroke that is similar to Fig. 3;
Fig. 5 is the enlarged side view of air valve attaching parts of the Floor Pump of Fig. 1 to Fig. 4;
Fig. 6 is the cutaway view of Floor Pump when induction stroke of second embodiment;
Fig. 7 is the cutaway view of the Floor Pump 7-7 along the line when compression stroke among Fig. 6;
Fig. 8 is along the sectional elevation of the line 8-8 among Fig. 7 when compression stroke;
Fig. 9 is the cutaway view of Floor Pump when induction stroke of the 3rd embodiment;
Figure 10 is the end elevation of Floor Pump when compression stroke of Fig. 9;
Figure 11 is the cutaway view of Floor Pump when induction stroke of the 4th embodiment;
Figure 12 is the end elevation of Floor Pump when compression stroke of Figure 11;
Figure 13 is the cutaway view of Floor Pump when induction stroke of the 5th embodiment;
Figure 14 is the cutaway view of Floor Pump when compression stroke of the 5th embodiment.
Fig. 1 to Fig. 5 has shown the high pressure hand-operated Floor Pump 10 on the bicycle 12 of being installed in of first embodiment.Floor Pump 10 is connected in bicycle rack 16 as vehicle seat pole with vehicle seat 14.The lower end of Floor Pump 10 is positioned at the vehicle seat pipe fitting 26 of vehicle frame 12, and is clamped on the vehicle frame 12 with the clamping ring 28 of vehicle seat pipe fitting 26 upper oral parts.The upper end of Floor Pump 10 is inserted in and is clamped in vehicle seat supporting clamping ring 30(Fig. 1 of vehicle seat 14) in.
Referring to Fig. 2, Floor Pump 10 comprises one first elongated tubular 18 and one second elongated tubular, 20, the second pipes, 20 to the first pipes, 18 weak points and coaxial with it.First pipe, 18 external diameter is enough to make it to insert slidably in the vehicle seat pipe fitting 26 of vehicle frame 16 and by clamping ring 28(Fig. 1) be clamped on the vehicle frame.Preferably, the external diameter of pipe 18 is between about 7/8 to 1 inch.First pipe, 18 long enoughs preferably have 12 inches approximately so that suitably regulate the height of vehicle seat 14.
The external diameter of second pipe 20 is less than the external diameter of first pipe 18, and can insert slidably and be clamped in the vehicle seat supporting clamping ring 30 of vehicle seat 14, this external diameter is about between 7/10 inch to 8/10 inch, as long as the length of second pipe 20 can make it to insert in the vehicle seat supporting clamping ring 30, so its length, preferably is about 2.5 inches or littler less than first length of tube.
Referring to Fig. 3 and Fig. 4, first elongated tubular 18 constitutes the shell of Floor Pump and has formed the cylindrical Floor Pump chamber 52 with closed end 54 within it.Piston component 56 comprises that 58, one in a piston that is positioned at chamber 52 has first end 62 that is connected with piston 58 and the connecting arm 60 of second end 64, and an air by-pass passage 66 that extends and pass piston 58 vertically.Passage 66 further passes connecting arm 60.Second end 64 of connecting arm 60 is used proper method, such as being threaded, is fixedly connected on second flange components 36.Second flange components 36 is used mode fixed pedestal second elongated tubular 20 such as welding 68 again.Be useful on clamped joint arm 60 on second flange components 36 and second elongated tubular 20 and manually make piston 58 reciprocating device in chamber 52.Be contained in addition in addition on the piston 58 first check valve apparatus 70 and along second check valve apparatus 88 of air by-pass passage 66.When first check valve apparatus 70 was opened, air can enter the closed end 54 of chamber 52 from piston 58 on every side, and when closing, the air in the closed end of chamber is compressed.During pressure in the air pressure in the closed end surpasses air by-pass passage, second check valve apparatus 88 is opened, in closed end 54 by compressed air admission air by-pass passage 66; During pressure in the pressure in the air by-pass passage surpasses closed end 54, second check valve apparatus 88 is closed, and enters chamber 52 with the prevention air from air by-pass passage 66.
First check valve apparatus 70 comprises a ring-type O shape circle valve part 72 and is positioned at the annular groove device that being used on the piston 58 admitted annular valve door part 72.The annular groove device comprises a major trough or claims first groove 74 and a pair of auxiliary tank 84.Major trough 74 circumferentially extends and admittance annular valve door part 72 along piston 58 outside faces.Major trough 74 is symmetrical at least one sagittal plane and all axial planes, and its axial dimension moves axially along major trough 74 to allow valve part 72 greater than the maximal axial extension of annular valve door part 72.Piston 58 is made of first and second endless members 76 and 78, and endless member 76,78 usefulness are threaded on first end 62 of connecting arm 64.One end diameter of endless member 76 reduces, and constitutes the end of major trough 74.The remainder diameter of parts 76 is bigger, constitutes a side of qualification major trough 74 or the annular groove crestal surface 83 of an end.Another endless member 78 has and leans against and towards the conical surface 82 of first parts, 76 smaller diameter end.The conical surface 82 has constituted the valve seat of annular valve door part 72.The conical surface 82 is positioned at that end far away of the closed end 54 from chamber 52 of annular groove device.Valve seat 82 and annular groove crestal surface 83 remain on O shape circle 72 in the major trough 74 and on the piston 58.The circumferential surface of two relative auxiliary 84 first endless members 76 below major trough 74 axially extends, and has constituted the passage that passes annular groove crestal surface 83.These auxiliary tanks 84 have constituted a part of annular groove device, its shape make when valve part 72 along major trough 74 from valve base surface 82 when removing, air can also pass through piston 58 by first check valve apparatus 70 of annular valve door part 72 belows.This situation will take place when piston 58 leaves the motion of closed end 54 of chamber 52.
First end 46 of flexible pipe 44 utilizes a ring plug spare 86 to pass arm 60, and plug part 86 is clipped in this end of flexible pipe 46 between the inside face of this plug part and connecting arm 60.The outside face of plug part 86 goes out screw thread such as car, to pull first end of catching flexible pipe 44 more firmly through fine limit work.First end of flexible pipe 44 and piston component 56 and second pipe 20 are captiveed joint, and communicate with air by-pass passage in the piston 58.
Referring to Fig. 4, plug part 86 has formed an end of second check valve apparatus 88 that is positioned at air by-pass passage 66.The remainder of second check valve apparatus 88 has an inner chamber 90, and it is formed in first endless member 76, also has an O shape circle 92 that constitutes the valve seat of check valve apparatus 88, and movable valve part or ball 94.
Fig. 3 has also shown and has been used for device 32 that first and second elongated tubulars are linked together.Device 32 comprises that 96, one of unthreaded holes that 40,42, one of first and second flanges, 34,36, the first and second fasteners pass first flange components 34 pass the tapped bore 98 of second flange components 36.Tapped bore 98 and unthreaded hole 96 are aimed at, and with the threaded portion 40a of admittance fastener 40, thereby first and second flanges 34 that will match and 36 removable turning up the soil are fixed together.Second fastener 42 is rivets, and it passes first flange 34 and fixed thereon in pipe 18 and 20 a side radially relative with first fastener 40.Make hole 96 and 98 whens alignment when flange 34,36 forwards to, the part of rivet is inserted in the opening 36a, and this opening 36a opens the end at second flange 36.The head 42a of rivet 42 and first flange 34 have stoped moving to axial of second flange 36, are fixed together thereby will manage 18,20.First and second fasteners 40,42 in pipe 18,20 relative both sides prevent that Floor Pump from bending at flange 34,36 places.
The open end away from closed end 54 of first elongated tubular 18 can partly seal with one the 3rd endless member 100, these parts 100 have centre hole 102, second end 64 of arm 60 is stretched out from first pipe 18, also have a via hole 104, make air can free in and out first pipe 18.Parts 100 can prevent that dust from entering first pipe 18, and can be arm 60 and provide a part to support and guiding.
Fig. 5 has shown a kind of structure preferably of valve attaching parts 50.Attaching parts 50 is installed on flexible pipe 44 second ends 48, and it comprises central tubular parts 106, and an end plug of the conical outer surface 108 of parts 106 is gone in the end 48 of flexible pipe 44.Fastener 112 is clipped on the end 48, and an end of central unit 106 just is fixed on attaching parts 50 on the flexible pipe like this.One threaded sleeve 114 rotatably is supported on the ring shoulder of central unit 106 other ends.The size of threaded sleeve 114 is suitable for being screwed on the conventional stem of valve, so that flexible pipe 44 is connected in stem of valve.Also has a seal with O ring pad 118.Can notice that different with conventional valve attaching parts, attaching parts 50 of the present invention is not used for depressing center link or other entity structure of the choker relief valve in the stem of valve.This is because Floor Pump 10 can make air enough compress, thereby needn't just can push valve by the direct contact valve.
The pipe 18,20 of Floor Pump 10 can be made with the suitable material of certain size, and such as with 1018 to 1027 mild steel solid drawn pipes, its wall thickness is about 50 mils (0.05 inch), and Floor Pump 10 just can be used as the seat bar of the conventional vehicle seat 14 that supports on the conventional vehicle frame 16 like this.
When using Floor Pump 10, with flexible pipe 44 from storage bag 15(Fig. 1) take out, then the stem of valve of valve attaching parts 50 with the band screw of routine is connected.Back out fastener 40 from second flange 36, swivelling pipe 18 and 20 so that rivet 42 unclamp from flange 36.Still being fixed on second on the vehicle seat 14 pipe 20 can be by improving or the vehicle seat 14 of loweing rise or descend, and Floor Pump still is installed on the bicycle 12 so that piston 58 along chamber 52 crank motions.After the use, rivet 42 can be matched with opening 36a, the threaded portion of fastener 40 can pass unthreaded hole 96 once more and be screwed into tapped bore 98, so that first and second pipes 18,20 are fixed together.
Fig. 3 has shown the position of first and second check valve apparatus 70,88 in compression stroke, this moment piston component 56 along primary shaft in first pipe 18 and to the closed end 54 of cavity 52, moving.Fig. 4 has shown the situation of two check valve apparatus 70,88 when heterodromous induction stroke, and this moment, piston 58 moved in opposite direction.
Referring to Fig. 3 and Fig. 4, in compression stroke, piston 58 is closed first check valve apparatus 70, and the air in chamber 52 closed ends 54 obtains compression.O shape circle valve part 72 slightly moves on chamber 52 inwalls when closed end 54 moves at piston 58, is resisted against on the conical surface valve seat 82, makes the sealing of chamber closed end thereby close first check valve apparatus.Along with piston continue to move, O shape circle be subjected to the chamber wall friction drag pulling and be subjected to the effect of the further air of compression and abut against on the valve seat 82 and move.The conical surface of valve seat 82 make O shape circle 72 expansion radially outward and further with the inside face closed contact of chamber 52.During the increasing of the air pressure of being compressed along with piston 58, O shape circle 72 more effectively is pressed on the valve seat 82 and and then is entered in the conical surface and the narrow gap 120 between chamber 52 inside faces of valve seat 82.This has increased sealing effectiveness, and make Floor Pump with air compression at least about 200 pounds/per square inch pressure.
In compression stroke, the ball body of valve of second check valve apparatus 88 94 leaves O shape under pressure during the air pressure in compressed air pressure surpasses air by-pass passage 66 at last and encloses 92, makes pressurized air be able to enter air by-pass passage 66 from chamber 52.
In induction stroke, piston 58 moves round about.O shape circle valve part 72 makes parts 72 remove and move at axially extended annular groove 84 from conical surface valve seat 82 with friction force between chamber 52 inwalls, enters chamber closed end 54 thereby make from the hole 104 inlet airs pass through and pass auxiliary tank 84 from piston 58 peripheral clearances.Simultaneously, any degree of vacuum that forms in pressurized air in the air by-pass passage 66 and/or the closed end 54 is seated on the O shape circle 92 spheroid 94, thereby prevents that air from passing air by-pass passage 66 and entering chamber 52.
Though not to need very much, also can be with a non-resilient annular valve door part, such as making with polytetrafluoroethylene or nylon, and the conical surface valve seat 82 of an elastically deformable.When the compressed-air actuated effect in valve part 72 is subjected to chamber 52 and the annular gap 120 that has been resisted against valve seat 82 back seaies, this valve part 72 is radially outward expanded and is contacted with the inside face of chamber 52.
Fig. 6-8 with different views shown the piston component 56 of Floor Pump 10 ' second kind of structure.An one piece piston 77 of this piston component 56 ' comprise ' and one be used for connecting arm 60 ' and first end of flexible pipe 44 be connected in piston 77 ' improved ring plug spare 86 '.Parts 77 ', 60 ', 44 and 86 ' size be suitable for forming each other pressing friction and cooperate so that manage 44 first end and arm 60 ' an end be fixed on ring plug spare 86 ' and piston 77 ' concentric convex shoulder between.
Embodiment among Fig. 6-8 comprise improved first air-valve device 70 '.Improved air-valve device 70 ' comprise have the major trough 74 that is positioned on piston 77 ' outer peripheral face ' the annular groove device, also have a frustoconical valve seat 82 that is positioned at piston 77 ' go up and form major trough 74 ' one ends ', and the annular valve door part 72 that constitutes by elastic O-ring.Be positioned at two radially relative annular groove faces 83 of piston 77 ' end ' constituted annular groove crestal surface device.Conical valve seat 82 and annular groove crestal surface 83 ' between major trough 74 ' axial length be a bit larger tham the axial length of O shape circle 72.On the position of two symmetries, major trough 74 ' two annular groove crestal surfaces 83 ' between along piston 77 ' axle and extend to piston 77 ' that end near closed end 54 form auxiliary tank 84 '.Auxiliary tank 84 ' axial length greater than greatest axial length by thereon O shape circle valve part 72.
Fig. 6 shown piston component 56 when induction stroke ' action.When piston component 56 ' when leaving the motion of closed end 54, auxiliary tank allows moving axially by part those counterparts along the annular groove device mutually of O shape circle valve part 72.In this motion, since with by the wipe contact of the inner periphery of first pipe, 18 chambers that constituted 52 and/or since the action of second check valve apparatus 88 and in closed end 54 formed partial vacuum degree, O-ring seals 72 lean against auxiliary tank 84 ' on those parts stoped, this makes these parts of O shape circle 72 lift off a seat 82, destroyed piston 77 ' and chamber 52 inner peripheral surfaces between these regional sealing glands.Elastic O-ring 72 will continue to closed end 54 directions stretch up to it with piston 77 ' and chamber 52 internal perisporiums between form enough gaps with the permission air by auxiliary tank 84 ' the enter closed end of chamber 52.For reducing the degree of crook of O shape circle, piston 77 ' can cut deeply than the whole peripheral edge margin of major trough 74 at the radially grooving in auxiliary tank 84 ' zone just can form bigger gap like this between the inner peripheral surface of the outer surface of piston in auxiliary tank 84 ' zone and chamber 52.
As shown in Figure 7, inflating before the beginning, O shape circle 72 be positioned at fully the major trough part 74 of annular groove device '.Charging stroke (Fig. 6) afterwards, the elasticity of the O shape of stretching, extension circle 72 can help to make O shape circle enter fully major trough part 74 ' interior with tentatively close first check valve apparatus 70 '.Air in the closed end 54 is by piston 77 ' and first check valve apparatus 70 ' seal and be compressed.Pressurized air acts on the O shape circle 72 it is pressed against on the conical valve seat 82, and valve seat 82 makes the expansion radially outward of O shape circle, make simultaneously O shape circle darker enter more completely piston 77 ' and the inner peripheral surface of first elongated tubular 18 between in the annular slot that forms.Many two-piece piston structure compared among the one piece piston of second embodiment of Fig. 6-8 and Fig. 1-5 are simpler, more effective, and the expense of making and assembling is lower.
The third piston component 156(Fig. 9) comprise a piston 158, a termination of piston 158 receive connecting arm 60 ' smooth end and an end of flexible pipe 44.Connecting arm 60 ' and the end of flexible pipe 44 utilize plug spare 186 to be retained in the cylindrical part 179 of piston 158 with expanded head 187.Piston head 177 is single-pieces, and uses the easy work material such as thermoplastic plastic to make.First check valve apparatus 170 is positioned at the circumferential major trough 174 on piston head 177 outer peripheral faces, the annular valve door part that major trough 174 is admitted as elastic O-ring and so on.When piston 158 when first moves axially, first check valve apparatus 170 makes the air compression in the closed end of chamber 52.One side of major trough 174 is formed by circumferential surface 182, has constituted the valve seat of O shape circle.Another axial end of major trough 174 has an annular groove crestal surface 183, annular groove crestal surface 183 extends along piston head 177 whole peripheral surface, but except near auxiliary tank 184 locas, auxiliary tank is the below that is positioned at major trough 174, and down extends to the end face of piston 158 from major trough 174.This fracture of annular groove crestal surface 183 is seen the most clearly in Figure 10.Also have second check valve apparatus 88 and air by-pass passage 166.
That part of the minimizing that almost makes O shape circle 72 can axially move past annular groove crestal surface 183 thereby subject to damage when using around the expansion of the annular groove face 183 of whole piston 158 side faces and the smaller portions that terminate near the annular groove crestal surface 183 the auxiliary tank 184.The axial range of auxiliary tank 184 is bigger, so that as long as O shape circle 72 lifts off a seat 182 a little just at once at the peripheral opening that forms the closed end that leads to chamber 52 of O type circle.
In the 4th embodiment shown in Figure 11,12, piston 258 comprises a cylindrical part 279, and this column part 279 is admitted connecting arms 60 ' and the end of flexible pipe 44 and and then admit the plug spare 186 with expanded head 187.Piston 258 also comprises a circular head 277, and the excircle of this circular head 277 is slightly smaller than the inner periphery of the pipe 18 that forms chamber 52, passes through on every side from it to allow air.The annular bar 281 that has a pair of annular groove crestal surface 283(Figure 120 that extends radially outwardly at its axle head is supported in head 277 and coaxially towards the closed end of chamber 52.Annular groove crestal surface 283 remains on an annular valve door part 272 on the annular bar 281, and annular bar 281 allows these valve parts to shift to or remove plane surface 282 on the opposing end surface of piston head 277.When valve part 272 was pressed against on the plane surface 282, shape had occupied a big sealing surfaces zone between surface 282 and valve part 272, stoped the outer surface of air by central opening 284 and bar 281.Opening 284 is greater than the cross-sectional plane of bar 281, and air can be from passing through therebetween when plane surface 282 is removed when valve part 272.That part of major trough that constitutes the annular groove device of the bar 281 between plane surface 282 and the annular groove crestal surface 283, and the plane 285 of bar 281 ends constitutes the auxiliary tank device.Though present embodiment does not have the valve seat of the conical surface, because the bigger valve seat that surface 282 forms can play a part similar.Air pressure in the closed end of Floor Pump chamber 52 is big more, and the power that then acts on the valve part 272 is just big more, and it is also just effective more with the sealing between the plane surface 282.Valve part 272 also comprises a skirt section 273, and extend and expansion radially outward to the closed end of chamber 52 in this skirt section 273, successively decreases on thickness.Skirt section 273 has constituted parts 272 and has managed sealing between 18 the inwall.Skirt section 283 provides a recess towards chamber 52 closed ends for valve part 272.Second check valve apparatus 88 is axially along air by-pass passage 66 and be arranged in piston component 156.
The benefit of embodiment among Figure 11-12 is that the air pressure of chamber 52 closed ends forces the annular element 272 of first check valve apparatus further to abut against on the piston 258.Because air is by central authorities rather than its edge of valve part 272, valve part 272 can be made into than flexible rubber in the prior art or leather film bowl has bigger rigidity.Annular valve door part 272 is not necessarily elastomeric, as long as can reinstatement and not easy to wear.The axial length in skirt section 273 and valve part 272 further help skirt section 273 and manage sealing between 18 sidewalls towards the concave shape of closed end.
Figure 13 and Figure 14 have shown the situation of piston component 356 when air-breathing and compression stroke of the 5th embodiment respectively.Piston component 356 comprise piston 358 and connecting arm 60 '.Attaching parts 60 ' an end and a termination of air hose 44 be contained in the cylindrical end 379, they are retained in the cylindrical end 279 by compressible ground of annular element 186 and frictionally.Piston 385 also comprises a circular head 377, and the latter's excircle is slightly smaller than the inner periphery of pipe 18.The annular bar 381 that one axle head has the annular groove crestal surface device that is folding trip ring 383 forms is supported in head 377 coaxially.Trip ring 383 is stuck in the circumference annular groove 386 on the bar 381, and annular element 372 retainings are solid on piston 258.Elastic O-ring 302 is contained in the parts 372 circumferential annular grooves 304 that extend.The axial end of annular groove 304 has a tapered annular surface 306.Annular element 327 has a size to be slightly larger than the central opening 308 of bar 381 radial dimensions, passes through between bar 381 and annular element 372 to allow air.Annular element 372 also has from another tapered annular surface 312 that centre hole 308 expands outwardly.One O shape circle 320 is enclosed within the root of bar 381, and bar 381 intersects with the plane surface 382 that constitutes piston 358 parts effectively there.O shape circle 320 contact ring-type conical surfaces 312 when piston head 377 presses against on the annular element 372.One first check valve apparatus 370 is made up of O shape circle 320, annular element 372 and the O shape circle 302 of head 377, piston 358, when piston 358 when first moves axially, it makes air compression, and when piston 358 opposite shaft orientations moved, it allowed air admission chamber 52(Figure 13).Annular element 372 comes to this and is retained on the bar 381 between trip ring 383 and the piston crown 377, plays a part a floating valve seat, and piston crown 377 and the O shape circle 320 that carries thereof play a part valve.The major trough device is made of the bar 381 between surface 382 and trip ring 383.
Even an arm 384 of trip ring 383 and with it the opening between another arm (not shown) of symmetry and the opening 385 at trip ring 383 curved end places allow air also can pass through back-up ring 383 when annular element 372 abuts against on the back-up ring 383 in piston 358 induction strokes, and on first check valve apparatus 370 formation auxiliary tank device.
Second check valve apparatus 388 axially passes piston 358, when piston 358 when first moves axially, its allows air to enter air by-pass passage 66 from the closed end 54 of chamber 52, and when piston 358 when second axially moves, its prevention air enters chamber 52 by air by-pass passage 66.In this embodiment, adopted a circular cone valve seat 392.
In upward stroke, be still in during parts 372 beginning on the inner peripheral surface of first pipe 18 up to being contacted by trip ring 383.O shape circle 302 makes parts 372 continue to lean against on the trip ring 383 in piston 358 uphill process.At this moment, the air freedom is by head 377 outer surfaces and manage between 18 the interior perimeter surface, between the upper surface by plane surface 382 and annular element on the other side 372, and enters between the outer peripheral face of the inner peripheral surface in hole 308 and bar 381.Simultaneously, under the effect, second check valve apparatus 388 is closed between the partial vacuum degree that forms in air pressure in passage 66 and/or the chamber 52.
In compression stroke, piston crown 377 moves up to the circle of the O shape on the bar 381 320 to the closed end 54 of chamber and touches the conical surface 312 on the annular element 372 and close first check valve apparatus 370.Piston 358 makes air compression to being moved further of closed end.This pressurized air acts on the O shape circle 302, this O shape circle is leaned against on the conical surface 306, thereby increased sealing effectiveness.The increase of air pressure further forces O shape circle 320 to enter in the slit between the relative plane surface 382 of the ring-type conical surface 312 and piston crown 377.Ball valve element 94 finally leaves conical surface valve seat 392 under the air pressure effect, open second check valve apparatus 388, makes pressurized air be entered air by-pass passage 66.Air pressure can reach 150 pounds/sq in or bigger.
Claims (18)
1, the manual pump on a kind of bicycle rack that is used in the vehicle seat that has saddle tube and have clamping ring is characterized in that, comprising:
One comprises a shell that the Floor Pump chamber of a closed end is arranged;
One piston component, it comprises the piston that is positioned at chamber, one has first end that is connected with piston and the connecting arm of one second end, and one passes the air by-pass passage that piston extends substantially vertically;
Being used for of being connected with connecting arm manually makes piston reciprocating device in the chamber;
Be positioned at first check valve apparatus on the piston, it makes air compression when the closed end to chamber moves along primary shaft when piston, and its allows the closed end of air admission chamber when second axially leaves the closed end of chamber when piston; And
Second check valve apparatus, it allows air to enter air by-pass passage from chamber when first moves axially when piston, and it prevents that air from entering chamber by air by-pass passage when second moves axially when piston.
2, Floor Pump as claimed in claim 1 is characterized in that, the diameter of described shell is enough to make it to insert in the saddle tube slidably.
3, Floor Pump as claimed in claim 2 is characterized in that, the reciprocating device of described manual generation comprises one second elongated tubular, and its external diameter is enough to allow this second pipe to insert slidably and is clamped in the vehicle seat clamping ring.
4, the Floor Pump shown in claim 3 is characterized in that, it is clamped on second pipe with bike saddle.
5, Floor Pump as claimed in claim 3 is characterized in that, described shell comprises one first elongated tubular, also comprises being used for the removable device of turning up the soil and being fixed together of first and second elongated tubulars.
6, Floor Pump as claimed in claim 5 is characterized in that, described anchor fitting comprises one from radially-protruding first mating member of an end of first pipe, and this first mating member defines first pipe and inserts the interior degree of depth of saddle tube.
7, Floor Pump as claimed in claim 6 is characterized in that, described anchor fitting also comprises second mating member that is connected with second pipe, and first mating member and second mating member are bonded together.
8, Floor Pump as claimed in claim 7 is characterized in that, described first and second mating members are respectively the first and second regular way orchids, and the anchor fitting on it comprises detouchable first fastener that passes first and second flanges.
9, Floor Pump as claimed in claim 8 is characterized in that, described anchor fitting comprises that one passes second fastener of first and second flanges at the opposite side relative with first fastener of first and second elongated tubular.
10, Floor Pump as claimed in claim 1 is characterized in that, it also comprises a flexible pipe, and first end of flexible pipe communicates with air by-pass passage, and second end of flexible pipe can be connected with the valve of cycle tyre.
11, Floor Pump as claimed in claim 10 is characterized in that, second end of flexible pipe also has a valve attaching parts, and the valve attaching parts is not used in the entity structure of pushing valve, and valve is only pushed by the pressurized air in the flexible pipe.
12, Floor Pump as claimed in claim 1 is characterized in that, first check valve apparatus comprises:
One annular element; And
Around the circumferential annular groove device that is used to admit annular element that extends of piston, the axial dimension of annular groove device makes air can along annular groove device pass through first check valve apparatus along the annular groove device axial fully moving to allow the adjacent that part of of annular element greater than the maximal axial extension of adjacent with it that part of annular element.
13, Floor Pump as claimed in claim 12 is characterized in that, described first check valve apparatus also comprises a ring-type conical surface valve seat that is positioned on the piston, is used for contacting with annular element, to close first check valve apparatus.
14, Floor Pump as claimed in claim 13 is characterized in that, described annular element comprises the O shape circle of an elastically deformable.
15, a kind of high pressure hand-operated Floor Pump is characterized in that it comprises:
One has the shell of Floor Pump chamber;
One is positioned at the piston of chamber;
Be connected with piston with so that piston reciprocating manual unit in chamber; And
Be positioned at the check valve apparatus on the piston, this check valve apparatus comprises the annular groove device around the outer surface of piston circumferential admittance annular element that extend of an annular element and on piston, the axial dimension of the part of this annular groove device is greater than the axial dimension of maximum, move axially with the adjacent part that allows annular element counterpart along the annular groove device, make fluid can pass through check valve apparatus, the one ring-type conical surface is arranged on the piston, and check valve apparatus is closed when the annular element contact ring-type conical surface.
16, Floor Pump as claimed in claim 15, it is characterized in that, described annular element is a valve part, but this valve part is reinstatement after the distortion, like this when the valve part wall falls within on the valve seat, valve part is outwards distortion radially, with the circular clearance between packed-piston outer peripheral face and the chamber inner peripheral surface.
17, Floor Pump as claimed in claim 16, it is characterized in that, described piston also comprises the annular groove crestal surface device that separates with valve seat, in order to valve part is retained on the piston, but also be, the part of annular groove device along the axis of the piston to extending across annular groove crestal surface device so that fluid can from the piston periphery by and by check valve apparatus and annular groove crestal surface device.
18, Floor Pump as claimed in claim 17 is characterized in that, described annular groove crestal surface device close enough valve seat is in case the valve part between stop ring piston ring land face device and the valve seat moves vertically.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US391,356 | 1989-08-09 | ||
US07/391,350 US5035440A (en) | 1989-08-09 | 1989-08-09 | Pump |
US391,350 | 1989-08-09 | ||
CA615,485 | 1989-09-29 | ||
CA615485 | 1989-09-29 | ||
CA000615485A CA1329577C (en) | 1989-08-09 | 1989-09-29 | Bicycle seat post housed tire pump with two check valves |
US499,917 | 1990-03-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1051146A true CN1051146A (en) | 1991-05-08 |
CN1023776C CN1023776C (en) | 1994-02-16 |
Family
ID=25673217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 90106719 Expired - Fee Related CN1023776C (en) | 1989-08-09 | 1990-08-09 | Pump |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1023776C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102275315A (en) * | 2010-06-12 | 2011-12-14 | 大捷达实业(深圳)有限公司 | Tire repair liquid container |
CN101294559B (en) * | 2007-04-23 | 2012-03-28 | 黄英哲 | Light inflator |
CN105889019A (en) * | 2016-05-23 | 2016-08-24 | 宁波市艾柯特工具科技发展有限公司 | Large-air-volume inflator |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016167336A1 (en) * | 2015-04-16 | 2016-10-20 | 株式会社パイオラックス | Damper device |
-
1990
- 1990-08-09 CN CN 90106719 patent/CN1023776C/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101294559B (en) * | 2007-04-23 | 2012-03-28 | 黄英哲 | Light inflator |
CN102275315A (en) * | 2010-06-12 | 2011-12-14 | 大捷达实业(深圳)有限公司 | Tire repair liquid container |
CN105889019A (en) * | 2016-05-23 | 2016-08-24 | 宁波市艾柯特工具科技发展有限公司 | Large-air-volume inflator |
CN105889019B (en) * | 2016-05-23 | 2017-10-31 | 宁波市艾柯特工具科技发展有限公司 | A kind of atm number inflator |
Also Published As
Publication number | Publication date |
---|---|
CN1023776C (en) | 1994-02-16 |
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