Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
  • B60S5/04—Supplying air for tyre inflation
  • B60S5/043—Supplying air for tyre inflation characterised by the inflation control means or the drive of the air pressure system

Definitions

• the invention relates generically to a tire inflation device consisting of a receiving sleeve for a compressed gas cartridge and a filling head which can be screwed into the receiving sleeve and has a connecting body, hollow mandrel, automatically closing outlet valve and tire valve connecting opening, the connecting body containing a flow channel, which connects the outlet valve with the hollow mandrel protruding into the interior of the receiving sleeve.
• the tire inflation device is particularly intended for filling bicycle tires.
• the outlet valve is designed as a cone valve which can be actuated by an outwardly guided tappet and a spring-loaded hand lever connected to it.
• the tire valve connection opening is designed as a transverse bore in the connection body. Misuse and improper use are not excluded in the known tire inflation device. It is thus possible to press the device onto a person's ear and simultaneously operate it, or to shoot foreign objects introduced into the tire valve connection opening by operating the hand lever. There is a considerable risk of injury if the device is used for other purposes.
• the invention is based on the object of specifying a tire inflation device of the type described at the outset which can be actuated by fitting the tire valve connection opening onto a suitable tire valve and in which non-intended applications and incorrect actuations are practically excluded.
• the invention teaches that the outlet valve is designed as a cylinder / piston arrangement with a piston slide guided in a cylinder bore of the connecting body, that the piston slide supported on a return spring contains an outlet channel running in the longitudinal direction of the piston and a radial bore connected therewith, the outlet channel at the end is extended to the tire valve connection opening and the radial bore forms a flow path with the flow channel of the connecting body when the piston slide is inserted into the cylinder bore and is offset relative to the flow channel when the piston slide is pushed out in the closed position, and that the connection body has a cavity which provides the free containing Kol ⁇ the tire valve port opening benschieberende includes in the closed position of the piston slide on the casing side with a small spacing.
• the Grevor ⁇ gear is triggered in the inventive inflater characterized in that the spool end to the TPMS connection opening to an associated tire valve inserted auf ⁇ and then is pressed against it by hand.
• the piston slide is pushed into the cylinder bore against the action of the return spring and transferred from the closed position to the open position. Also a metered delivery of the gas contained in the compressed gas cartridge is easily possible by changing the pressing force with which the tire inflator is pressed against the tire valve.
• the chamber accommodating the free piston slide end represents, as it were, an encapsulation and prevents the abusive applications explained at the beginning.
• the piston valve for the purpose of sealing against the cylinder bore piston rings that a blocking surface for the closed position and one of the open position zuge ⁇ arranged skirt portion with ausmündender therein Radialboh ⁇ tion each delimit laterally. There are a minimum of three piston rings required.
• a preferred embodiment of the invention provides that is inserted into the free end of a piston valve sealing body, molded therein TPMS connection opening.
• the at ⁇ sc Closure body also on a projecting rigid collar, which forms the chamber.
• Fig. 2 shows a further embodiment of the invention, in sections.
• the tire inflation device shown in the figures consists of a receiving sleeve 1 for a compressed gas cartridge 2 and a filling head 3 which can be screwed into the receiving sleeve 1 and has a connecting body 4, hollow mandrel 5, an automatically closing outlet valve 6 and a tire valve connection opening 7 for the tire valve (not shown).
• the compressed gas cartridge 2 is held in the receiving sleeve 1 and is pierced by the hollow mandrel 5 fastened to the connecting body 4 when the filling head 3 is screwed into the receiving sleeve 1.
• the connector body 4 contains a flow channel 8, which connects the outlet valve 6 with the hollow mandrel 5 projecting into the interior of the receiving sleeve 1.
• the outlet valve 6 is designed as a cylinder / piston arrangement with a piston slide 10 guided in a cylinder bore 9 of the connecting body 4.
• the one supported on a return spring II Piston slide 10 contains an outlet channel 12 running in the longitudinal direction of the piston and a radial bore 13 connected thereto.
• the outlet channel 12 is widened at the end to the tire valve connection opening 7.
• the piston slide 10 is pushed out by the amount of its adjustment stroke a, the radial bore 13 being offset with respect to the flow channel 8.
• the radial bore 13 4 forms with the flow channel 8 of the terminal body ⁇ a flow path. This corresponds to the open position of the exhaust valve 6.
• the piston slide 10 has piston rings 14, which laterally delimit a blocking surface 15 for the closed position and a jacket section 16 assigned to the open position with a radial bore 13 opening therein.
• a vent hole 18 also adjoins the cylinder space 17 enclosed by the piston valve 10 and the cylinder bore 9.
• the connecting body 4 has a recess 19 which encloses the free piston slide end 20 containing the tire valve connection opening 7 in the closed position of the piston slide 10 on the shell side with a small clearance.
• the chamber 19 is formed by a projecting, rigid collar 21 of the connecting body 4.
• a cap 22 is placed on the collar 21 and contains a bore adapted to the tire valve connection opening 7.
• the tire valve port opening 7 is formed in a sealing ⁇ body 23, which is inserted into the free end of the piston slide 20 and is of a ixiert mounted on the free spool end 20 screw 24 f.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Check Valves (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6434266

Family Applications (1)

Country Status (3)

Cited By (4)

Families Citing this family (3)

Citations (4)

Family Cites Families (4)

• 1991
  • 1991-06-19 DE DE19914120188 patent/DE4120188C1/de not_active Expired - Fee Related
• 1992
  • 1992-06-16 EP EP19920912979 patent/EP0542986A1/de not_active Withdrawn
  • 1992-06-16 WO PCT/EP1992/001355 patent/WO1992022448A1/de not_active Application Discontinuation

Patent Citations (4)

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