JPH05500400A - pump - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] pump TECHNICAL FIELD The present invention relates to pumps, and in particular to air pumps for manual as well as mounting on bicycles. Regarding.

Pumps that can be operated by hand have been devised for use with bicycles. It's here. Many of these air pumps have a pump housing that is part of the bicycle frame. It is used as a pumping and pumping room. Most of these pumps are provided by The main advantage is that these pumps allow you to port the pump without removing it from the bike. It is possible to operate the pump manually. In many cases, the seat covers the pump piston. is coupled to the supporting pump arm, thereby controlling the reciprocating movement of the pump piston. movement is possible.

These types of pumps have several disadvantages. First of all, this pump rotates on its own axis. The car frame forms part of the pump and must be removed from the bike itself I can't. Such pumps often contain multiple parts, and these parts are mounted in multiple frame members that are brazed or welded together. , so without adversely affecting the bicycle frame or workmanship. Access to pump parts for repair is difficult or impossible. most of me The tubing used in rolling stock frames is rather thin and, on average, mass-produced. It is something that Such tubing is weak, e.g. to attach air pump equipment. It is susceptible to corrosion in the penetrated areas.

Air pumps designed for use with bicycles (few air pumps have a Separate multiple pump housings that can be removed from the bicycle frame with The main disadvantage of such pumps, including It must be removed from the bicycle frame in order to do so.

The other main disadvantage of manual air pumps is the limited pressure capacity of these pumps It is. In practice, all such pumps suffer from incomplete suction in the pump chamber. when the air is able to pass through and the air is being compressed in the pump chamber. uses a flexible diaphragm to seal the piston, which prevents air from blowing through. Ru. However, with this design, the temperature is about 1°0 before the compressed air blows through. psi (7,031 kg/cm”) or less .

In one aspect, the invention includes a housing containing a pump chamber having a closed end. , a piston within the pump chamber, a first end connected to the piston, and a first end connected to the piston; an articulating arm having one end and an opposite second end; and generally extending through said piston. A manual air pump with a piston assembly that includes an axially extending air passage. Ru. Further, in this pump, the piston is manually reciprocated within the pump chamber. means connected to said articulating arm for said piston to move in a first axial direction; compresses the air within the closed end of the pump chamber when the piston moves into the closed end of the pump chamber; prevents air from entering the closed end of the pump chamber when moved axially away from the closed end of the pump chamber. a first one-way valve means on a piston for permitting said piston to be in said first axial direction; When the pump is being moved, air passes from the pump chamber through the air passage. and when said piston is moved in a direction opposite to said direction, air enters the air passage. second one-way valve means for preventing entry into the pump chamber through the pump chamber.

In another aspect, the invention provides a housing including a pump chamber and a housing within the pump chamber. a piston for reciprocating the piston within the pump chamber; hand actuated means connected to the piston and one-way valve means on said piston. The one-way valve means includes an annular valve means and a manual high-pressure pump comprising: a groove extending circumferentially around the outer surface of the piston for receiving an annular valve member in the piston; Including steps. A portion of the groove means opens the one-way valve means and directs fluid through the one-way valve means. an adjacent portion of the annular valve member axially along a portion of said groove means to permit passage therethrough; greater than the largest axial dimension of the adjacent portion of the annular valve member to allow for movement. Has large axial dimensions. The one-way valve means further includes a uniaxial direction of the groove means. Includes a tapered annular valve seat at the end. This one-way valve means has a tapered annular valve member. Closes when positioned above the valve seat.

In another aspect, the invention provides a method for removably housing within a seat tube of a bicycle frame. a bicycle air pump comprising a first elongate tube having a length and profile sufficient to It is. it further has a length less than the length of said first tube; and a second elongate tube having an outer diameter smaller than the outer diameter of the second tube; The outer diameter of the second tube is removable inside the top of the seat pillar of the bicycle seat. It is sufficient to put it in and tighten it. one of the first and second elongate tubes; One tube forms the pump chamber, and the remaining tube is used to reciprocate the piston inside the pump chamber. is connected to the piston. Additionally, the pump connects the first and second elongated tubes together. a flexible air hole extending from the second elongate tube; an air valve connected to the exposed end of the air hose.

In the drawing, Figure 1 is an isocircular view of a first embodiment of a manual air pump mounted on a bicycle. , Figure 2 is a side view of the air pump of Figure 1 removed from the bicycle, and Figure 3 is a side view of the air pump of Figure 1 removed from the bicycle; FIG. 4 is a cross-sectional front view of the pump of FIGS. 1 and 2 during the refilling process, and FIG. 4 is the same as FIG. 3 during the refilling process. FIG. 5 is an enlarged side cross-sectional view of the air valve joint of the pump shown in FIGS. 1 to 4. 6 is a cross-sectional front view of a second embodiment of the air pump during a refill stroke; FIG. , FIG. 7 is a cross-sectional front view of the pump of FIG. 6 taken along line 7-7 of FIG. 6 during the compression stroke. It is a figure 1 , FIG. 8 is a cross-sectional view of the pump taken along line 8--8 of FIG. 7 during the compression stroke. , FIG. 9 is a cross-sectional front view of the third embodiment of the air pump during the refill stroke, and FIG. is an end view of the air pump of FIG. 9 during the compression stroke, and FIG. 11 is an end view of the air pump of FIG. 9 during the refill stroke. Figure 12 is a cross-sectional front view of a fourth embodiment of the pump shown in Figure 11 during the compression stroke; FIG. 13 is an end view of implementation B of the air pump; FIG. Implementation 1! FIG. 14 is a cross-sectional front view of the air pump during the compression stroke. FIG. 2 is a cross-sectional front view of an embodiment of the invention.

1 to 5 illustrate a first embodiment of a manual high-pressure air pump 10 mounted on a bicycle 12. The air pump 10 is connected to the system that connects the seat 14 to the bicycle frame 16. It is used as a seat pillar. The lower end of the pump 10 is connected to the seat of the frame 12. It is received in the tube 26, and a collar 28 provided at the mouth of the seat tube 26 allows the frame to be 12. The upper end of the pump 10 is the seat column top 30 of the seat 14. (Fig. 1) and is fastened.

Referring to FIG. 2, the pump 10 includes a first elongated tube 18 and a The first tube 18 includes a second elongate tube 20 shorter than the tube 18 and coaxial. is removably received in the seat tube 26 of the frame 16 and is provided by a collar 28 (FIG. 1). and has a sufficient outer diameter to enable it to be fastened to the frame. good length, preferably about 12 inches (30,48 cm). It has an outer diameter that allows it to be removably received and fastened. second tube 2 0 is long enough to allow it to be received on the seat post tail 30 the first and second elongate tubes 18.20 to prevent lateral or rotational movement; The first and second elongate tubes 18.20 are releasably but firmly fixed together. Means 32 are provided for. This means 32 is a first mating member or A first elongated flat flange 34 is provided at one end of the first tube 18. It protrudes radially outward. Furthermore, the means 32 are arranged in half at one end of the second tube 20. A second fitting in the form of a second similarly elongated flat flange 36 projecting radially outwardly. A retaining member is provided. The flat flanges allow them to be joined together parallel to each other so that Each of the first and second flanges 34,36 is made of wax. secured to the first and second tubes 18.20 by conventional means such as attaching or welding 68; has been done. a first removable fastener 40, a flexible support 41, a first removable fastener 40; 2 fixed fasteners 42 and a flexible pneumatic valve fitting 50 at the exposed end 48. A flexible hose 44 is also shown in FIG.

3 and 4, the first elongate tube 18 extends through the pump housing. 1 and defining a cylindrical pump chamber 52 having a closed end 54 . piston ace The assembly 56 includes a piston 58 within the chamber 52 and a piston 58 connected to the piston 58. a connecting arm 60 having a first end 62 and a second end 64 opposite the first end; The passageway includes an air passageway 66 extending axially through the tongue 58 of the articulating arm 60. It continues through the middle. The second end 64 of the articulating arm 60 is secured by any suitable means such as threads or the like. and is firmly coupled to said second flange member 36. the second furan; The second elongate tube 20 is similarly secured to the pipe member 36, for example by a weld 68. It is supported. The second flange member 36 and the second elongated tube 20 are A hand for grasping the connecting arm 60 and manually reciprocating the piston 58 in the chamber 52. Equipped with steps. First one-way valve means 70 on piston 58 and along air passage 66. A second one-way valve means is provided. The first valve means 70 is arranged so that the air to allow passage around piston 58 into closed end 54 of chamber 52. and closed to compress the air within said chamber. Second one-way valve means 8 8 is compressed at the closed end 54 of said chamber when the pressure of the air in the air passage is exceeded. open to allow air to flow into the air passageway 66, and When the pressure in the air passage exceeds the pressure in the closed end 54, air is removed from the air passage 66 into said chamber 5. 2. Close to prevent air from passing through.

The first valve means 70 includes an annular O-ring valve member 72 and an annular valve portion on the piston 58. Groove means are provided for receiving the material 72. Said groove means is a main or first groove 7 4 and a pair of second grooves 84. The first groove 74 is located around the outer surface of the piston 5B. The valve member 72 extends circumferentially around the valve member 72 and receives an annular valve member 72 therein. This first groove 74 has a small symmetrical about at least one radial plane and about all axial planes; annular valve member 72 to permit axial movement of valve member 72 along groove 74; having an axial dimension greater than the maximum axial dimension; The piston 58 is connected to the connecting arm 60. from first and second annular parts 76.78 attached by screws to one end 62; Made. One annular part 76 has one end of a reduced radius forming a first groove 74. do. The remainder of the part 76 is of larger diameter and extends to one side of the first groove 74. Alternatively, a land 83 is formed to define the end portion. The other annular part 7 is the first part 7 6 includes an angled annular surface 82 adjacent and facing the reduced diameter end. said inclined surface 82 forms a seat for the annular valve member 72 and tapers outwardly.

A surface 82 is located at one end of the groove means remote from the closed end 54 of the chamber 52.

The seat 82 and the land 83 are connected to the O-ring 72 above the piston 5 in the first groove 74. is held. A second groove 84 opposite to the first groove is located directly below the first groove 74. extends axially along the circumferential surface of the first annular component 76 and penetrates the land 83. Limit the path that extends. This second groove 84 allows the valve member 72 to extend along the first groove. As the air moves axially away from the valve seat surface 82, the air passes through the first valve means 70. through the annular valve member 72 and into the piston 58. defining a portion of the groove means that is formed so as to This is the 5th day of the piston This occurs when piston 58 moves away from closed end 54 of chamber 52.

First end 46 of flexible hose 44 passes through arm 60 and through annular insert 86. and the annular insert is located between the insert 86 and the inner surface of the articulating arm 60. one end of the ground is tied. The outer surface of the insert 86 can be secured to the front by screws, for example. The first end 46 of the hose 44 is finished to better grip the first end 46 of the hose 44. It is. A first end 46 of the hose 44 is connected to the piston assembly 56 and The air passageway 66 within the piston 58 is firmly coupled to the second tube 20 and and are aerodynamically coupled.

Referring to FIG. 4, the insert 86 is positioned along the air passageway 66. forming one end of the second one-way valve means 88. of said valve means 88; The remainder includes an inner chamber 90 formed in the first annular part 76 and a seat for the valve means 88. Defined by a resilient O-ring 92 and a movable valve member or ball 94 forming Ru.

FIG. 3 further shows means 32 for securing the first and second elongate tubes together. vinegar. This means 32 includes first and second flanges 34, 36, first and second fasteners. unthreaded holes passing through the fittings 40, 42 and the first flange member 34; 96 and a threaded hole 96 through the second flange member 36. Holes 98 allow said mating first and second flange members 34,36 to be brought together. Tighten the threaded part 40a of the tool 40 so that it is firmly fixed in a removable manner. It is aligned with the receiving unthreaded hole 96. The second tightening is tool 4 2, the first clamping of the tubes 18 and 20 is performed on the diametrically opposite side to the fitting 40, This is a rivet that extends fixedly through the flange 34. A portion of the rivet is , when flanges 34.36 are rotated to align holes 96.98, It is received by a cutout 36a exposed on one side of the second flange 36.

The head 42a of the rivet 42 and the first flange 34 are relative to the second flange 36. This prevents axial movement, thereby solidifying tubes 18 and 20 together. tube 1 8. The first and second fastening fittings 40.42 on opposite sides of the flange 34. 3 6 to prevent bending of the pump.

The open end of the first elongate tube 18 opposite the closed end 54 includes an arm from the first tube 18. 60 into the central hole 102 and said first tube 18 to allow extension of the second end 64 of the tube. Third annular part 1 comprising additional holes 104 allowing free passage of air from the first tube Partially closed by 00. The part 100 is free of debris. 1 to provide support and guidance for the arm 60.

FIG. 5 shows the preferred shape of the air valve fitting 50, in which the fitting 50 is a flexible hose. 44 and includes a central tubular member 106, one end of which is conical. a tapered outer surface 108 that is inserted into the end 48 of the hose 44; has been done. A clamping member 112 is fastened to the end 48 and the central member 10 One end of 6 fastens a joint 50 to the hose 44. The threaded collar 114 is It is rotatably supported at the remaining end of the central tubular member 106. This threaded 114 connects the flexible hose 44 to the air valve shaft using a conventional air valve shaft. It is sized so that it can be received for bonding to. Annular O-ring sealing gas A socket 118 is provided. Particularly mentioned are most commonly used air valve fittings. Unlike a hand, the fitting 50 of the present invention includes a hollow for pushing the air valve down into the valve stem. There is no central shaft or other solid structure. This means that the pump 10 is pumping enough air. depressing the air valve without physically contacting said valve by compressing it to This is something that can be done.

The tubes 18, 20 of the pump 10 are normally attached to a conventionally constructed bicycle frame 16. A pump is used as a seat pillar to support the bicycle seat 14 made like this. A suitable material of suitable dimensions, e.g. Mild steel joints of approximately 1018 to 1027 m1l (1,27 m5) wall thickness Made of seamless tubing.

Pump 10 removes flexible hose 44 from storage bag 15 (FIG. 1); The air valve fitting 50 can be used by attaching it to a commonly used threaded valve stem. can. For tightening, the fitting 40 is unscrewed from the second flange 36 and the tube is removed. 18 and 20 are rotated to free rivet 42 from flange 36 .

Connect the pump to the bicycle 12 by connecting the second tube 2o, which is still firmly attached to the seat 14, to the bicycle 12. Move the piston 5 to the chamber 52 by raising and lowering the seat 14 while still attached. It can be moved up and down to make a reciprocating motion along the line. After use, rivet 42 and The cutout 36a can engage and secure the first and second tubes 18.20 together. To tighten the threaded portion 40a of the tool 40, insert the threaded portion 40a into the unthreaded opening 96. The threaded hole 98 can be passed through the threaded hole 98 again.

The pump 10 can be used as a seat post for bicycles or for some regular use without changing its seat. It can be attached to your bicycle and then removed.

FIG. 3 shows the piston assembly 56 moving in a first axial direction into the first tube 18 and into the chamber 52. First and second valve means 70 during a compression stroke being moved towards closed end 54 ．． 4 shows the position of 88 when the piston 58 is moved in the opposite direction to the first axis direction. 8 shows the structure of the two valve means 70, 88 during a refill stroke in the opposite direction, which is being reversed.

Referring to FIGS. 3 and 4, during the compression stroke, air is supplied by the first valve means 7o. is compressed by piston 58 at closed end 54 of chamber 52 . 0 ring valve part The material 72 slightly pulls the inner wall of the chamber 52 during movement of the piston 58 toward the closed end 54; located on a tapered valve seat 82, thereby sealing the closed end of said chamber; Close the valve means. As the piston continues to move, the O-ring will experience friction with the chamber wall. The air drawn by the friction and compressed pushes it further outward along the valve seat 82. It will be done. The tapered surface of the seat 82 allows the O-ring 72 to be radially outwardly is expanded into further contact with the inner circumferential surface of chamber 52. piston As the pressure of the air compressed by The inclined surface of the seat portion 82 and the inner circumferential surface of the chamber 52 It is pressed into the narrow gap 120 formed between them. This increases the sealing effect and The pump pumps air at a pressure of at least approximately 200 ps+ (14,062 kg/cm”). It allows air to be compressed up to

The first tube 18 defines the housing as well as the cylindrical pump chamber. The top of the first tube 18 Fill the tube with a suitable outer diameter to allow the tube to be fastened within two days of the sheet tube. The radius of the cylindrical chamber is reduced, thereby making the chamber as large as possible. Using a cross-sectional area of 52 and a second elongate tube (not shown) within the first elongate tube 18 is added to the piston assembly 56 to achieve a predetermined compression by All-out power will be unleashed.

During the compression stroke, the bulb 94 of the valve member of the second valve means 88 is energized by the pressure of the air to be compressed. When the pressure of the air in the air passage 66 is exceeded, it is finally pushed away from the surface of the O-ring 920. , thereby allowing compressed air to pass from chamber 52 into air passageway 66 . Become.

During the refill stroke, piston 58 is moved in the opposite axial direction. O-ring valve member 72 and Friction between the inner circumferential surfaces of chamber 52 causes member 72 to pivot away from inclined seat 82. over the groove 84 extending in the direction, thereby passing through the hole 104 and the piston 5 8 through a second groove 84 and into the closed end 54 of the chamber. Ru. At the same time, the pressure within the air passage 66 and/or the pressure created at the closed end 54 Due to the partial vacuum, the ball 94 is received in the seat provided by the O-ring 92, Air is thereby prevented from passing through air passage 66 into chamber 52.

Although not desirable, a non-resilient annular valve member, such as PTFE or nylon and the valve member 72 is compressed within the chamber 52 to seal the annular gap 120. When placed on the valve seat 82 by air, it contacts the inner circumferential surface of the chamber 52. an elastically deformable tapered valve seat 82 that is expanded radially outwardly until It is also possible to have

6-8 illustrate an alternative configuration for the piston assembly 56' of the pump 10.

The piston assembly 56' includes a one-piece piston 77' and an articulating arm 60'. and a modified version for coupling the first end of flexible hose 44 to piston 77'. Includes an annular insert 86'. Part 77', part 60', part 44 and part 8 6' all connect the first end of the flexible hose 44 and the arm 60' to the annular plug member 8. 6' and the concentric tail of the piston 77'. to be accomplished.

The embodiment of FIGS. 6-8 includes a modified first air valve means 70'. This fix The mold valve means 70' is connected to the first groove 74' in the outer circumferential surface of the piston 77', the piston 7 7' and defines one end of the first groove 74'; a tapered frustoconical valve seat 8; 2', and a groove means comprising an annular valve member 72 provided by a resilient O-ring. The land means includes a pair of diametrically opposed lands at one end of the piston 77'. 83'. First groove between tapered valve seat 82 and land 83' The axial length of 74' is only slightly larger than the axial dimension of O-ring 72. . In the two symmetrical positions, the first groove 74' extends between the lands 83' and the piston 77'. along the piston 77' to one end of the piston 77' near the closed end 54, and the second groove 84' is formed. The second groove 84' is the largest axis of the adjacent O-ring valve member 72. It has an axial dimension that is larger than the directional dimension.

The operation of piston assembly 56' during the refill stroke is shown in FIG. Second Groove 84' is formed when piston assembly 56' moves away from closed end 54. Allowing axial movement of adjacent portions of the O-ring valve member 72 along the groove means. child During such movement, the portion of the O-ring 72 adjacent to the second groove 84' is moved into the first tube 18. Frictional contact with the inner cylindrical surface of chamber 52 is thus defined. contact) and/or by operation of the second valve means 88 at the closed end 54. The O-ring 720 section is delayed by a partial vacuum applied to the The inner circumferential surface of the piston 77' and the chamber 52 is moved away from the valve seat 82. The air seal in the area between is broken. The elastic O-ring 72 allows air to pass through the second groove 84'. piston 77' to allow flow through and into the closed end of chamber 52. continues toward the closed end 54 until sufficient clearance is provided between the inner circumferential walls of the chamber 52. Ru. The piston 77' is moved in the entire circumferential direction of the first groove 74 so as to minimize bending of the O-ring. The radial undercut is deeper in the region 84' of the second groove than in the region 84' of the second groove. , thereby creating a larger space outside the piston in the second groove area 84'. It can be formed between the surface and the inner circumferential surface of the chamber 52.

As shown in FIG. 7, before the pumping begins, the O-ring 72 is completely free of the groove means. Located within portion 74' of the first groove. According to the hi charging stroke (Fig. 6), the tensile O The resiliency of the ring 72 is such that the O-ring moves completely into the first groove portion 74'. 1 assists in initially closing the valve means 70'. The air inside closed #J54 is piston is captured and compressed by the valve 77' and the first valve means 70'. Compressed air compresses the O-ring 72 and presses the O-ring 72 against the tapered valve seat 82 to close the valve. The seat has an O-ring between the piston 77' and the inner circumferential surface of the first elongated tube 18. 0-ring radially, aiming deeper and more completely into the cut annular gap. Expand outward. The structure of the one-piece piston of the second embodiment of FIG. It is simpler and more efficient than the multi-part piston structure of Figures 1-5. Yes, and much cheaper to manufacture and assemble.

The third piston assembly 156 (FIG. 9) includes the smooth end of the articulating arm 60' and the hole. The piston 158 includes a piston 158 that receives the piston 44 on one side. The end of the connecting arm 60' and the flange The end of the flexible hose 44 is connected by an insert 186 with a flared head 187. It is retained within a cylindrical portion 179 of piston 158. Piston head 177 is integrated (mono 1 i th i c), easy to process thermoplastic resin etc. made of suitable materials.

The first one-way valve means 170 includes a first circumferential valve member, such as a resilient O-ring 72, which receives an annular valve member. It is provided on the outer circumferential surface of the rad 177 to the piston near the directional groove 174.

When the piston 158 is moved in the first axial direction, the first one-way valve means 170 The air within the closed end of chamber 52 is compressed. One side of the first groove 174 is located on the circumferential surface 1 82 and forms the seat of the O-ring 72. of the first groove 174 At the opposite axial end, the second groove 184 is located below the first groove 174 . An end adjacent to a location extending from directly below to the axial end of the piston 158 It is given to the piston by the land 183 extending around the entire circumference of the radius 177 except for It is being This discontinuity in land 183 is best shown in FIG. second one Directional valve means 8 and air passages 66 are provided.

Around the extension of the land 183 and the second groove 184 around almost the entire circumference of the piston 184 A relatively small portion of the land removed by is moved axially past land 183. Minimize the portion of O-ring 72 that is allowed to move. Axial direction of second groove 184 The direction extension portion is such that the slightest movement of the O-ring 72 from the valve seat 182 The relatively large ing.

Fourth implementation of Figure 11.12! ! In this case, the piston 258 is connected to the end of the connecting arm 60'. Insert 18 receives the end of flexible tube 44 and has a flared head 187 6 includes a cylindrical portion 279 that receives the cylindrical portion 279. In addition, the piston 258 allows air to advance around it. slightly less than the inner circumference of tube 18 forming chamber 52 to allow A pair of radially outwardly extending rings including an annular spade 277 having a narrow outer circumference. An annular shaft 281 having a head 283 (see FIG. 12) at its axial end is It is supported coaxially from the pad 277 and faces toward the closed end of the chamber 52. this run The door 283 holds the annular valve member 272 on the annular shaft 281, which is connected to the piston. movement towards and away from the flat surface 282 on the opposite side of the radial 277 Allows movement of the valve member. Valve member 272 is pressed against flat surface 282. When the valve member 272 on the surface 282 and the outside of the shaft 281 have a large sealing surface area. between the side circumferential surfaces, thereby allowing air to pass through the central opening 284 and the shaft 281. is prevented from advancing through the outer circumferential surface of the The opening 284 is connected to the shaft 281. is larger than the cross-section of the valve member 272, thereby separating the valve member 272 from the planar surface 282. When inserted, it is possible to pass between the opening 284 and the shaft 281. Before The portion of the shaft 281 between the flat surface 282 and the land 283 forms a first groove of the groove means. The flattened portion 285 at the end of said shaft 281 constitutes a second groove means.

This embodiment does not have a slanted valve seat, but is formed by the flat surface 282. A relatively large seat also works by creating a large air pressure within the closed end of the pump chamber 52. The closer the valve member 272 is to the The seal between surfaces 282 becomes more effective. Further, the valve member 272 is located at the closed end of the chamber 52. a scar that extends toward the center and widens radially outward as its thickness tapers -) 273, the skirt 273 provides a seal between said member 272 and the inner wall of the tube 18; This skirt 273 is placed against the valve member 272 facing the closed end of the chamber 52. Provides a recess. A second one-way valve means 88 has a piston along the air passageway 66. Located axially within assembly 156.

The embodiment of FIGS. 11 and 12 shows that the pressure of the air within the closed end of chamber 52 8 more reliably pushes the annular member 272 of said first valve means. Provide results. Air flows through the center of the valve member 272 rather than along the edges of the valve member. so that the valve member 272 is more flexible than the flexible rubber or leather septum of the prior art. It is made to be much more rigid. The annular valve member 272 is elastic. ic) not necessary, just resilient), durable for a long time It is fine as long as it is something.

The axial length of the skirt 273 and the concave shape of the valve member 272 opposite the closed end of the skirt 273 and the side wall of the tube 18.

FIGS. 13 and 14 each illustrate a fifth embodiment illustrated by piston assembly 356. The piston assembly 356 shows the refill and compression strokes in an embodiment. 358 and a connecting arm 60'.

The cylindrical end 379 is frictionally retained within the cylindrical end 279 by the annular member 186. One end of the held connecting arm 60' and one end of the flexible hose 44 are received. Piss Tong 358 further includes an annular head portion having an outer diameter slightly smaller than the inner circumference of tube 18. 377 and a run in the form of a removable spring clip 383 at the axially extreme end. An annular shaft 381 having a drive means is coaxially supported from the head 377.

The clip 383 is received in a circumferential groove 386 of the shaft 381 and is inserted into the circumferential groove 386 of the piston 258. Hold the annular member 372. Elastomeric O-ring 302 surrounds member 372. is received in a groove 304 extending in the circumferential direction. The axial end of the groove 304 is tapered The annular member 327, including the annular surface 306, is slightly larger than the radius of the axis 381. It has a central opening 308 that allows air to pass between the shaft 381 and the annular member 372. is now possible. Annular member 372 has another tape extending around central hole 308. The O-ring 320 including the paved annular surface 312 prevents the shaft 381 from moving and the piston. of axis 381 across flat surface 382 which effectively constitutes part of 358. Supported around the bottom. The O-ring 320 has a piston rod 377 attached to the annular member 3. When pressed against 72 , it contacts annular tapered surface 312 . first valve means 370 is the head 377 and O-ring 320 of the piston 358 and the piston When the piston 358 is moved in the first axial direction, it compresses the air and the piston 358 moves in the first axial direction. Air enters chamber 52 when moved in an axial direction opposite to that of (FIG. 13) It is formed by an annular member 372 and an O-ring 302 that enable this. mosquito Thus, the annular member 372 is inserted between the clip 383 and the paddle 377 of the piston 358. is captured on the shaft 381, while the piston has the rad 377 and its supported O-ring 320 acts as a valve. The first groove means is axially between the surface 382 and the crimp 383. Provided by 381.

Openings and clips between legs 384 and symmetrical legs (not shown) of clip bin 383 The opening 385 at the big end of the cup 383 allows the annular member 372 to Even when the piston 358 is firmly pressed against the pin 383 during refilling, the air is a second groove means on the first valve means 370; is forming.

The second one-way valve means 388 is configured so that the piston 358 is being moved in the first axial direction. allows the closed end 54 of the chamber 52 to pass into the air passageway 66 when through the air passageway 66 as the stone 358 is being moved in the second axial direction. A piston 358 is installed axially through the piston 358 to prevent passage of air into the chamber 52. I get kicked. A sloping annular valve seat 392 is used in this embodiment.

During the upward stroke of the piston, member 372 initially contacts clip 383. It remains stationary against the inner peripheral surface of the first tube 18 until the end of the first tube 18 . The 0 ring 302 is The member 372 continues to be held in the clip 383 while the piston 358 is raised. let The air then flows between the outer circumferential surface of the head 377 and the inner circumferential surface of the tube 18, and between the flat surface 382 and the opposing surface of the annular member 3720, and the hole thereof. can pass freely along the hole 308 between the inner circumferential surface and the outer surface of the piston shaft 381. Ru. At the same time, the compressed air in the passage 66 and/or the partial The vacuum causes the second one-way valve means 388 to close.

During the compression stroke, the O-ring 320 on the shaft 381 of the piston head 377 is inserted into the annular member. 372, the first one-way valve means 37 is in contact with the inclined surface 312 opposite the shaft 381. 0 to the closed end 54 of the chamber. piston further towards the closed end Movement of the tube 358 compresses the air. This air compresses the O-ring 302 and the ring toward the inclined surface 306, thereby further enhancing the sealing effect. . Additionally, air pressure build-up causes O-ring 320 to move between tapered annular surface 312 and the piston. pressed into the narrowing gap formed by the opposing flat surface 382 of the door 377. The nine spherical valve member 94 is finally forced out of the tapered seat 392 and into the second position. Valve means 388 is opened to allow compressed air to pass through air passage means 66.

Air pressure of approximately 150 psi (10,5465 kg/c++”) or higher can be caused.

FIG.3 FIG.6 FIG.8 Copy and translation of written amendment) Submission (Article 184-8 of the Patent Law) February 10, 1992

Claims (18)

[Claims] 1. a housing containing a pump chamber having a closed end; a piston within said chamber; an articulated arm having a first end and a second end coupled to the piston; a piston assembly including an air passageway extending generally axially therethrough; means coupled to an articulated arm for manually reciprocating a piston within the chamber; the piston is capable of moving the piston in a first axial direction toward a closed end of the chamber; when the air is compressed at the closed end of the chamber, and the piston is at the closed end of the chamber. When moved away from the chamber in the direction of the second axis, air can enter the closed end of said chamber. The first valve means provided on the piston to make the piston Air advances from the chamber into the air passageway when being moved in a first axial direction. when the piston is being moved in the second axial direction, the air second one-way valve means for preventing passage of air into the chamber through the air passageway. Used for bicycle frames and seats with brims that have a seat tube characterized by Manual air pump suitable for use. 2. an outer surface sufficient for said housing to be removably received within said seat tube; The pump according to claim 1, characterized in that it has a diameter. 3. the means for manual reciprocating motion comprising a second elongated tube; The tube is removably received in the collar of the seat and allows it to be tightened. 3. A pump according to claim 2, characterized in that it has an outer diameter sufficient to 4. Claim in combination with a bicycle seat fastened to the second elongated tube. 3. The pump described in 3. 5. the housing comprises a first elongate tube, and the first and second elongate tubes The pump is characterized by a means for releasably securing the tubes together. The pump according to claim 3. 6. The means for releasably securing the first and second elongated tubes together includes means for releasably securing the first and second elongate tubes together. a first mating member projecting radially from one end of the tube; The member is characterized in that the member limits the depth to which the first tube is inserted into the seat tube. The pump according to claim 5. 7. means for releasably securing the first and second elongate tubes together; further comprising a second mating member coupled to the second elongated tube, the first and Pump according to claim 6, characterized in that the second mating members are joined together. . 8. The first and second mating members each have first and second elongated flat members. a flange releasably securing the first and second elongate tubes together; a first removable means for determining the first and second flanges; 8. A pump according to claim 7, characterized in that it is a removable fastener. 9. for releasably securing the first and second elongate tubes together; Means includes a first fastener on a side of the first and second elongate tubes opposite the first fastener. and a second fastener extending through the second flange. 9. The pump according to claim 8. 10. a flexible host having a first end pneumatically coupled to the air passageway; the flexible hose is coupled to a bicycle tire air valve; 2. The pump of claim 1, wherein the pump has a second end adapted to 11. further comprising an air valve fitting at the second end of the flexible hose; Air so that the hand is pressed down by the compressed air of the flexible hose alone Characterized by not having a solid structure for pushing down the valve The pump according to claim 10. 12. The first valve means includes an annular member and a piston for receiving the annular member. groove means extending circumferentially around said annular member; said first valve having an axial dimension greater than an axial dimension, thereby along said groove means; said annular groove axially along said groove means sufficient to allow air to pass through said means; Claim 1, characterized in that adjacent parts of the member are allowed to move. Pump as described. 13. the first valve means contacting the annular member to close the first valve means; 13. further comprising a tapered annular seat on the piston. Pump as described. 14. The annular member may include an elastically deformable O-ring. 14. The pump according to claim 13. 15. a housing containing a pump chamber; a piston in the chamber; a hand actuated hand coupled to the piston for reciprocating the piston within said chamber; step by step, a one-way valve means on the piston, the one-way valve means connecting an annular member and the piston; circumferentially around the outer surface of said piston for receiving said annular member on a piston; a tapered annular valve means on the piston; one of said groove means; a portion of said groove means for allowing fluid to flow through said one-way valve means; such that adjacent portions of said annular member can be moved axially along one portion. has an axial dimension larger than a maximum axial dimension, and the one-way valve means has an axial dimension larger than a maximum axial dimension; A manual high-pressure pump characterized in that it closes when it comes into contact with an annular tapered surface. . 16. The annular member is a valve means, which when positioned above the valve seat, radially so as to seal the gap between the outer circumferential surface of the piston and the inner circumferential surface of the chamber. 16. The material according to claim 15, wherein the material is elastically deformable to deform outwardly. Pump included. 17. The pump is spaced apart from the valve seat to retain the valve member on the piston. further comprising land means, wherein a portion of the groove means allows fluid to pass past the piston. , across the land means and to enable passage through said one-way means. 16. Extending axially along the stone and bridging the land means. The pump described in. 18. The land means prevents axial movement of the valve member between the land means and the valve seat. 18. The port of claim 17, wherein the port is located sufficiently close to the valve seat to pump.