CN2205322Y

CN2205322Y - Full automatic inflation pump for bicycle

Info

Publication number: CN2205322Y
Application number: CN94201365U
Authority: CN
Inventors: 林立
Original assignee: Jiangxi Keyuan Micro Pump Co Ltd
Current assignee: Jiangxi Keyuan Micro Pump Co Ltd
Priority date: 1994-01-13
Filing date: 1994-01-13
Publication date: 1995-08-16
Anticipated expiration: 2004-01-13

Abstract

The utility model relates to a full automatic inflation pump for a bicycle, which is suitable for various bicycles to full automatically inflate by using relative rotation. The full automatic inflation pump for a bicycle is tightly fixed to an enlarged stern tube. A cam is tightly fixed to a roller. A piston is impelled to inflate back and forth by the cam and volute springs. Compressed air goes into an inner tube via a one way valve and an air tube. When air pressure reaches a setting pressure of a pressure regulating valve, the piston is locked on a cone surface of an oilless bearing. The piston is disengaged from the cam. When the air pressure drops to a recovery action pressure, the piston pops up automatically to restore inflation. The full automatic work of autoinflation, automatic pressure maintaining and automatic disengagement can be achieved. The utility model has the advantages of wholly-sealed structure, firm installation, small friction trisquare and long service life. Air source is filtered by gaps. The functions of the utility model can not be influenced by rain, mud, sand, etc. The utility model can not be broken down by bumping, throwing down and vibrating.

Description

Full automatic inflation pump for bicycle

The utility model is a kind of vehicle tires such as bicycle, mini-motorcycle, disabled person's car that are used for, and utilizes wheel to relatively rotate full-automatic aeration pump into power, belongs to field of vehicles.

Domestic once had some bicycle snifter patents as 85202403.7,85105176 etc., when all must inflating, they manually link up with, manually break off relations behind the sufficient gas, or manual handling power-transfer clutch, and all reckon without hermetically sealed, source of the gas filters, pipeline very easily stops up or the like problem, " 85204480.1 but the miniature automatic tire pump of pressure regulation " patent, the full automaticity air pump of general vehicle tire is provided, but at bicycle full-automatic aeration pump product, must be in each block construction of product, aspects such as shop characteristic give clear and definite and perfect.

The purpose of this utility model is to provide a kind of " bicycle full-automatic aeration pump product of full-automatic aeration, automatically pressurize, the all-sealed structure that stops automatically, break away from automatically for the people.

The technical scheme of this product is: the central siphon size of the axle skin (Decorative drum) of bicycle is strengthened, be pressed in the floral disc of the left and right sides with same cooperation, one hole is arranged on the central siphon, can put into cam, the threaded one end lengthening of beaming roller, be screwed into cam, and tight with the jam nut back of the body, make it form one, after adjusting, cam is positioned at central siphon central authorities, the minitype piston pump of a complete function, firmly be installed on the central siphon, the pump housing is by loam cake, cylinder barrel, lower cover is with two screws, spring washer connects, and piston head has a cone-shaped spring, piston pushes inflation by cam and is ejected by cone-shaped spring in the wheel, and using cone-shaped spring is in order to obtain big compression ratio.On be stamped seal groove, put into paper washer or rubber cushion has sealed cylinder barrel, become a leak free compression chamber, on covered an air gate, put into the rubber valve pocket in the hole, block with the plastic top nail, form the one-way cock that resistance is very little, compressed gas enters epicoele by this check valve, and the check valve top has the threaded connection of hollow to twist in loam cake, the middle tracheae that inserts, the tracheae upper end is welded on the straight-though valve inside, and valve inside is got through, and the check valve effect does not recur, valve inside overcoat rubber tubing, its tapering and inner tube valve seat are pressed on the valve seat by the valve nut, form a seal channel, make compressed gas can enter the inner tube of a tyre smoothly, insert in the hollow joint tracheae bottom, screw with hexagonal (hexagon)nut, a conical surface arranged in the hexagonal (hexagon)nut, in put a rubber ring, when hexagonal (hexagon)nut was tightened, inner cone compressed rubber ring and makes the tracheae sealing.On cover check valve top and have an aperture to lead to pressure regulating cavity, one cover compound type relief piston is arranged in the chamber, and there is pressure spring its rear end, the pressure spring rear end, put into the pressure regulation screw cap hole, the pressure regulation nut is screwed in and covers, and the available one thin pressure regulation back of the body cap back of the body is tight, and an aperture is arranged on the pressure regulating cavity wall, aperture passes in the hollow guide rod of loam cake, guide rod inserts piston cavity, and piston cavity is screwed with union cap (UC), and pressure cap has annular groove in the hole.Groove is embedded in the O RunddichtringO, make the guide rod sealing, there is a rubber pad pressure cap below, compress the primary piston inner chamber and form a little cylinder of sealing, the ejector pin that band awl point is arranged in the chamber, ejector pin has an annular groove outward, be inserted in the O RunddichtringO, the ejector pin bottom becomes the awl point, be with spring on the ejector pin, corresponding positions is equipped with three holes that are mutually 120 ° on the piston, putting into steel ball in the hole contacts with ejector pin awl point, reciprocatingly slide in the graphite oilless sintered-metal bearing of piston in lower cover, there is a tapering graphite oilless sintered-metal bearing top, the graphite oilless sintered-metal bearing external diameter has two air channels, pistons end is porose, put into a steel ball and become friction of rolling with cam, for guaranteeing that steel ball can rotate, steel ball top pad one quenching steel disc makes the long-term work wearing and tearing very little, one trapezoidal seal groove is arranged on the piston, in be inserted in the O RunddichtringO, when piston upwards compressed, O type circle was closely attached on groove inclined-plane and inner wall of cylinder by gas pressure and forms anticyclonic pressure, when the piston At time of eject, O type circle is affixed on upper wall, exposes four air bleeders, and atmosphere enters compression chamber, tire pressure makes loam cake pressure regulating cavity pressure raise when rising, promotion combination relief piston compresses pressure spring and moves to right, and moves to chamber wall aperture to communicate with compressed gas, and pressure gas enters piston cavity by the hollow guide rod rapidly, the top is ejector pin down, ejector pin awl pinnacle goes out three steel balls, and steel ball is climbed up the graphite oilless sintered-metal bearing tapering, pins the piston inflation and stops.Turn pressure regulation nut compresses pressure spring, then inflates automatic stop pressure and raises, otherwise then reduce, and it is tight with the thin pressure regulation back of the body cap back of the body to regulate the back, and then pump automatic stop pressure stability is at setting.When tire pressure because during the natural leak step-down, acting on combination relief piston end force descends, the combination relief piston is promoted to move to right by pressure spring, guide rod top aperture communicates with aperture on the pressure regulation nut, and piston internal pressure gas overflows, and band awl pinnacle pin is by spring reset, three steel ball retractions, piston is jumped out and is recovered inflation, and so repetitiousness remains in the optimal pressure range of travelling the tire pressure full automaticity.

The utility model has been done the following replenishing and improvement to 85204480.1 patents:

(1) concrete regulation the process structure of each parts, guaranteed that as these structures such as the combination of axle skin, superstructure, piston structure, lower cover combinations the technological feasibility of product and cost are low.

(2) taked some to improve the measure of inflation rate: for example the O type circle with piston is poor, it is trapezoidal to change lower inclined plane into by rectangle, is exempted from O type circle plastic deformation and shrinks back reduction aeration speed, and and for example the graphite oilless sintered-metal bearing external diameter is provided with two air channels, increase flow area, and improved inflation rate.

(3) take some to prevent the measure of leaking, improved pump performance; For example relief piston is designed to compound type, when making work the O RunddichtringO by atmospheric pressure and spring force compress, air pressure is higher, presses tightlyer, exempted from leakage, and made the pressure regulation sensitivity, and the higher pressure of resuming work is arranged.

Below be the embodiment and the accompanying drawing of this product:

Fig. 1: cam and axle skin portion assembly drowing

Fig. 2: the longitudinal sectional drawing of air pump

Fig. 3: combination relief piston constructional drawing

Fig. 4: the manual inflation chews constructional drawing

Fig. 5: drum (lock rises) car pump erection plan of stopping.

1 central siphon among Fig. 1 for increasing, about be pressed in the floral disc of the bicycle standard left and right sides with force fit, beaming roller 2 penetrates wherein, there is a hole can put cam 3 on the central siphon 1, beaming roller 2 threaded one ends lengthening screws in cam 3 internal thread holes, and tightly make the formation one with a jam nut 4 back of the body, assembling back cam 3 driving surfaces are positioned at central siphon central authorities, mix up axle bumper, behind the suitable tightness, tight with two jam nuts, 5 back ofs the body, beaming roller one end face is equivalent to the cam vertex and files a breach mark, to be fastened at the bicycle rack tense marker downward when beaming roller, the pressure that pump is given bearing during inflation upwards, this pressure has when inflation pressure reaches 0.4Mpa about 20 kilograms, human body weight is downward, therefore this equilibrium of pressure human body weight, alleviated wear-out of a bearing, prolonged the bicycle life-span.

Lower cover 6 among Fig. 2, cylinder barrel 7, two screw spring washers of loam cake 8 usefulness connect fastening, loam cake 8 has closure gasket groove 9, in put into paper washer or rubber cushion 10, become a seal compression chamber, one aperture is arranged on the loam cake 8, put into rubber in the hole and cut down cover 11, plastic top nail 12 blocks, it is very little to form a forward resistance, the reverse self-packing one-way cock of air pressure, be screwed with a cannulated threaded joint 13 on the loam cake 8 of one-way cock top, joint 13 is used fibre packing with loam cake 8, the formation positiver sealing connects, insert tracheae 14 in the middle of the joint 13, the tracheae upper end is welded on the valve inside 15 of the straight-through inner tube of a tyre, valve inside 15 holes are got through, do not play the check valve effect, valve inside 15 overcoat rubber tubings 16, be pressed on the inner tube valve seat conical surface by valve nut 17, form seal channel, joint 13 is inserted in tracheae 14 bottoms, hexagonal (hexagon)nut 18 is tightened on the joint 13, one conical surface 19 is arranged in the hexagonal (hexagon)nut, in put into rubber ring 20, when screwing hexagonal (hexagon)nut 18, inner cone 19 compressing rubber circles 20 make the tracheae sealing, tracheae 14 is a scalable distance in joint 13, tracheae is straight and upright when therefore installing, and 13 times stomidiums of joint are smaller, and tracheae 14 can not pass, avoid pushing up bad rubber and cut down cover 11, the unidirectional top of cutting down has an aperture 21 to lead to pressure regulating cavity in the loam cake 8, and compound type relief piston 22 is arranged in the chamber, and a spring 23 is overlapped in the rear end, spring rear end is put into pressure regulation nut 24 holes, there is aperture at pressure regulation nut 24 centers, and the effect in this hole is that pump can be discharged the pressure gas in inflation piston 27 annular seal spaces when resuming work rapidly, and piston can be jumped out rapidly, pressure regulation nut 24 is outer to have screw thread to be screwed in the tapped bore of loam cake 8, mixes up behind the pressure tight with pressure regulation back of the body cap 25 back ofs the body.Compound type relief piston 22 its structures as shown in Figure 3,22a is a piston core, and 22b is a piston bush, and 22c is a standard O RunddichtringO, O RunddichtringO 22c is compressed by atmospheric pressure and spring 23 during work, air pressure is higher, presses tightlyer, has been exempted from leakage, and pressure reduces when air pressure reduces, reduce with the hole wall friction force, the pressure regulation sensitivity, pump has the higher pressure of resuming work.The pressure regulating cavity wall has an aperture among Fig. 2, aperture passes to die casting in hollow guide rod 26 holes of loam cake 8, guide rod 26 inserts piston 27 inner chambers, piston 27 inner chambers are rotary with threaded pressure cap 28, O RunddichtringO groove is arranged in its interstitial hole, put into O RunddichtringO 29, be enclosed within and make the guide rod sealing on the guide rod 26, there is rubber pad 30 pressure cap 28 belows, compress primary piston 27 inner chambers and form the little cylinder of annular seal space, casing wall is smooth accurately concentric with outer garden, and the garden cylinder of pressure cap 28 is as centering benchmark close-fitting with it, the ejector pin 31 that band awl point is arranged in the little cylinder, annular groove is arranged on it, be inserted in the O RunddichtringO, three holes that are mutually 120 ° are arranged on the piston rod, put into steel ball in the hole and contact with the awl point of ejector pin 31, the lower plane of sleeve spring 32 pressure caps 28 is as the upper limit plane of ejector pin 31 on the ejector pin.Piston 27 bottoms are porose, put a quenching steel disc 33 in the hole and put into steel ball again, and there is an annular groove in the aperture, block with bead coil 34, can freely rotate to keep steel ball to contact with cam, and the friction moment minimum, wearing and tearing are few.There is a trapezoidal O RunddichtringO groove piston 27 tops, its lower inclined plane and four little air extractor vents intersect, put into inflation O RunddichtringO 35 in the groove, the O RunddichtringO is closely attached on lower inclined plane and cylinder barrel 7 inwalls by gas pressure when piston 27 upwards compresses, and the formation anticyclonic pressure, when piston 27 ejections moved downward, O type circle 35 was affixed on upper wall and exposes four little air extractor vents, and atmosphere is filled compression chamber rapidly.Crank motion in the graphite oilless sintered-metal bearing 36 of piston 27 in being pressed into lower cover 6, there is a conical surface graphite oilless sintered-metal bearing 36 tops, and two air channels are arranged on the external diameter, and hole dimension is as the spacing diameter of three steel ball spreadings in the lower cover 6, and ejector pin is inserted into from the locking angle can not be withdrawed from.For piston 27 its end steel ball after automatic stop can be contacted with cam disengages, the gap is greater than 0.2 millimeter, but each part processing accumulated error is in addition eliminated in the position pressure adjustment of graphite oilless sintered-metal bearing 36 in lower cover 6, adjust the back with screw 38 fastening it, the below camber of lower cover 6 and central siphon 1 coincide, and are exempted from the dust sandy soil to enter.

When wheel, beaming roller 2 is fixing with cam 3, pump rotates with central siphon 1, thereby piston 27 crank motion under cam 3 and cone-shaped spring 37 effects, cone-shaped spring 37 flattens the back and becomes spiral line shape, purpose with this spring can obtain big compression ratio, pressure gas is washed rubber valve pocket 11 open and is entered tire during Piston Compression, aperture 21 communicates with tire, when air pressure raises, loam cake 8 internal pressure-regulating cavity pressures raise, promote to make up relief piston 22 compression springs 23 and move to right, when aperture on moving to the pressure regulating cavity wall and tire pressure gas phase are led to, pressure gas enters piston 27 inner chambers by hollow guide rod 26 rapidly, the top is ejector pin 31 down, pushing three steel balls has climbed up on lower cover 6 interior graphite oilless sintered-metal bearing 36 conical surfaces, having pinned piston 27 inflations stops, because three steel balls are in climbing up conical surface process, make piston 27 upwards promote a distance, thereby its end steel ball contacts with cam disengages, turn pressure regulation nut 24 holddown springs 23, then inflate automatic stop air pressure and raise, otherwise then reduce, but thereby the inflation pressure of tire free adjustment select, it is tight with pressure regulation back of the body cap 25 back ofs the body to mix up the back, when tire pressure owing to when natural leak and step-down, act on combination relief piston 22 end forces and descend, for spring 23 promotes to move to left, pressure regulating cavity wall aperture exposes, communicate with pressure regulation nut 24 central aperture, piston 27 chamber pressure gas overflow, and ejector pin 31 is pushed into upper limit plane by spring 32, the retraction of three guiding principle pearls, piston 27 are jumped out and are recovered inflation.

The unlikely rotating-wheel that needs is inflated during for entrucking, the manpower of saving time, pump is provided with the manual inflation and chews, and is shown in Figure 4, it chews seat 39 by a manual inflation, put into rubber valve pocket 40 usefulness top nail 41 in the stepped hole and block, the manual inflation chews seat 39 usefulness and is screwed on the loam cake 8, with rubber pad 42 sealings, top nail 41 and rubber valve pocket 40 bottom surfaces must be gapped can not dieback, rubber valve pocket 11 in the loam cake 8, top nail 12, requirement is identical.

This product is owing to adopted all-sealed structure; source of the gas filters through the gap; thereby rainwater; harsies environment such as silt can not influence its function; very reliable and stable the protection fully between steel wire is installed can not fall and bump and malfunctioning because of vibration, tired the recording workpoints of pump made time weak point long service life; friction resistance square is little, does not have the sense of heavy burden during inflation.

This product seriation, each specification bicycle are to be press-fitted floral disc hole count and tracheae length difference, mountain bike, and derailleur is except that the floral disc difference, and beaming roller extends.

The floral disc TBE that the bicycle of tool brake strap is press-fitted.

Fig. 5 shows tool drum (rise and the stop) bicycle of stopping, and drum hub 42 is to strengthen design-calculated by the middle part, and pump is installed in the middle part, beaming roller, and combined methods such as cam require with preceding identical.

Claims

1, bicycle full-automatic aeration pump, the minitype piston pump of a complete function firmly is installed in the central siphon upper pump casing and connects fastening by loam cake, cylinder barrel, lower cover with the screw spring washer, have tracheae to communicate with the inner tube valve seat, piston (27) promotes crank motion by cam (3), cone-shaped spring (37) and it is characterized in that:

The central siphon of a, increasing (1) is pressed in the floral disc of the bicycle standard left and right sides with force fit, beaming roller (2) penetrates wherein, there is a hole to put into cam (3) on the central siphon (1), beaming roller (2) threaded one end lengthening, screw in cam (3), and tightly form one with thin back of the body cap (4) back of the body, cam (3) assembling back driving surface is positioned at central siphon central authorities, it is tight with two jam nuts (5) back of the body to mix up the suitable tightness of axle bumper

B, loam cake (8) have closure gasket groove (9), in put into paper washer or rubber cushion (10), loam cake has a hole on (8), the one-way cock that rubber valve pocket (11) top nail (12) is arranged in the hole, be screwed with cannulated threaded joint (13) on its top loam cake (8), insert tracheae (14) in the joint (13), there is an aperture (21) the one-way cock top, lead to pressure regulating cavity, compound type relief piston (22) is arranged in the chamber, spring (23), pressure regulation nut (24), pressure regulation back of the body cap (25) has an aperture to pass to die casting in hollow guide rod (26) hole of loam cake (8) on the pressure regulating cavity wall

C, piston cavity is rotary with threaded pressure cap (28), O RunddichtringO groove is arranged in its interstitial hole, put into O RunddichtringO (29) in the groove, be enclosed within on the guide rod (26), there is rubber pad (30) pressure cap (28) below, the garden cylinder of pressure cap (28) is the pressure cap benchmark that centers, and lower plane is the upper limit plane of ejector pin (31), and ejector pin has annular groove on (31), be inserted in the O RunddichtringO, be mutually 120 ° of three hole on the piston rod, put into steel ball in the hole and contact sleeve spring on the ejector pin (32) with ejector pin (31) awl point, piston (27) bottom is porose, put a quenching steel disc (33) in the hole and put into steel ball again, there is an annular groove in the aperture, blocks steel ball with bead coil (34), there is trapezoidal O RunddichtringO groove piston (27) top, its lower inclined plane and four little air extractor vents intersect, and put into inflation O RunddichtringO (35) in the groove

D, lower cover (6) below camber and central siphon (1) coincide, and graphite oilless sintered-metal bearing (36) is pressed into wherein, and there is a conical surface graphite oilless sintered-metal bearing (36) top, and two air channels are arranged on the external diameter, and the interior hole dimension of lower cover (6) is as the spacing diameter of three steel ball spreadings.

2, bicycle full-automatic aeration pump according to claim 1 is characterized in that: the suitable cam of beaming roller (2) end face (3) vertex, and file has a breach mark, and when beaming roller was anchored on cycle frame, mark was downward.

3, bicycle full-automatic aeration pump according to claim 1, it is characterized in that: insert tracheae (14) in the middle of being screwed with a cannulated threaded joint (13) on the loam cake (8), hexagonal (hexagon)nut (18) is tightened on the joint (13), hexagonal (hexagon)nut has a conical surface in (18), in put rubber seal (20).

4, it is characterized in that according to claim 1,3 described bicycle full-automatic aeration pumps: tracheae (14) upper end is welded on the straight-through valve inside (15), and the outer rubber tubing of valve inside (15) (16) is pressed on the inner tube valve seat conical surface with valve nut (17).

5, according to claim 1,3 described bicycle full-automatic aeration pumps, it is characterized in that: joint (13) forms positiver sealing with loam cake (8) with fibre packing and connects, and stomidium is smaller down for joint (13), and tracheae (14) can not empty mistake.

6, bicycle full automaticity air pump according to claim 1 is characterized in that: combination relief piston (22) is by piston core 22a, piston 22b, and standard O RunddichtringO 22c forms.

7, bicycle full-automatic aeration pump according to claim 1, it is characterized in that: be pressed in the lower cover (6) graphite oilless sintered-metal bearing (36) position adjustment guarantee piston (27) end steel ball after the locking with cam (3) gap greater than 0.2 millimeter after, fastening with screw (38).

8, bicycle full automaticity according to claim 1 fills pump, it is characterized in that: the manual inflation chews by the manual inflation and chews seat (39), rubber valve pocket (40), and thimble (41), rubber pad (42) composition is with being screwed on the loam cake (8).

9, bicycle full-automatic aeration pump according to claim 1 is characterized in that: tool is stopped and is roused (rise and stop) bicycle, is design is strengthened at drum hub (42) middle part, and pump is installed on the dilated diameter of middle part.