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 with an automatically closing valve and a hollow mandrel for opening the compressed gas cartridge, the receiving sleeve having a jacket connection section into which the filling head can be screwed, and the filling head containing a flow channel which connects the valve to the hollow mandrel protruding into the interior of the receiving sleeve and is under filling pressure after the compressed gas cartridge has been opened.
• the tire filling device is intended in particular for filling bicycle tires.
• the receiving sleeve can be unscrewed before the compressed gas cartridge has been completely emptied. This results in a considerable security risk, even if the receiving sleeve has a ventilation opening and is therefore itself depressurized. This is because there is a risk that the compressed gas cartridge, which is still under filling pressure, will come loose from a holder provided on the filling head and fly off like a bullet.
• the invention is based on the object of further developing the tire inflation device of the type described at the outset such that the receiving sleeve can only be unscrewed after the compressed gas cartridge has been emptied to such an extent that there is no danger to the user.
• the invention teaches that the filler head opens a cross-section adjoining the flow channel. points in which a locking bolt loaded by a restoring spring and sealed the transverse bore is guided in a piston-like manner, and that the locking bolt is assigned a locking recess on the jacket connection section of the receiving sleeve, the locking bolt being movable outwards by the filling pressure against the action of the restoring spring and positively engages in the securing recess of the receiving sleeve screwed onto the filling head.
• a ventilation opening should enclose the space of the transverse bore between the safety bolt and the jacket connection section.
• the vent opening can be a gap, which is ensured by sufficient play between the jacket connecting section and the filling head, or an elbow bore in the receiving sleeve.
• the securing recess can be designed as a bore, an elongated hole or also as a circumferential annular groove. The correct positioning of the securing recess and the securing bolt can be ensured in that the jacket connection section has a stop collar which acts together with a stop surface of the filling head.
• This measure can prevent the securing bolt from being stressed in the screwing direction when the receiving sleeve is screwed onto the filling head and thereby jamming within the transverse bore.
• the advantages of the invention can be seen above all in that the securing of the receiving sleeve takes place automatically as soon as a brand-new compressed gas cartridge inserted into the receiving sleeve is opened on the fixed hollow mandrel and the filling head is under filling pressure.
• the joining sleeve and filling head are joined together in a known manner. Additional manual measurements are not required.
• the unscrewing protection of the receptacle is also ensured if the tire inflator with the pressurized gas cartridge open at the hollow mandrel is not used for long periods of time. The result is a tire inflator that virtually eliminates the risk of injury due to improper handling.
• the single figure shows a schematic representation of the longitudinal section through a tire inflator, in particular for filling bicycle tires. It consists of a receiving sleeve 1 for a compressed gas cartridge 2 and a filling head 3 with an automatically closing valve 4 and a hollow mandrel 5 for opening the compressed gas cartridge 2.
• the receiving sleeve 1 has a jacket connection section 6 into which the filling head 3 can be screwed.
• the filling head 3 contains a flow channel 7, which connects the valve 4 to the hollow mandrel 5 projecting into the interior of the receiving sleeve 1 and is under filling pressure after the compressed gas cartridge has been opened.
• the filling head 3 also has a transverse bore 8 adjoining the flow channel 7, in which a securing bolt 9 is guided in a piston-like manner.
• the securing bolt 9 is sealed by a piston ring 10 on the transverse bore 8, and it is loaded by a return spring 11 which seals off the washer 12 used on a transverse bore 8. is supported.
• the securing bolt 9 is associated with a securing recess 13 on the jacket connection section 6 of the receiving sleeve 1.
• the securing bolt 9 can be moved outwards against the action of the return spring 11 by the filling pressure which is set in the flow channel 7 when the valve 4 is closed and engages in the securing recess 13 of the receiving sleeve 1 screwed onto the filling head 3.
• the figure shows this operating state.
• the space of the transverse bore 8 delimited between the securing bolt 9 and the jacket connection section 6 is relieved of pressure by a ventilation opening 14.
• the jacket connection section 6 of the outer sleeve 1 surrounds the filling head 3 with sufficient play, the ventilation opening 14 being formed by the gap which is established. It is understood that bores can also be provided in the jacket connection section for the purpose of ventilation.
• the securing recess 13 is designed as a blind hole into which the pressurized securing bolt 9 engages in a latching manner. It is within the scope of the invention to design the securing recess differently, in particular as a circumferential annular groove.
• the jacket connection section 6 has a stop collar 15 which interacts with a stop surface of the filling head.
• the hollow dome 5 is integrally formed on a socket 16 inserted into the end of the filling head 3, and an annular seal 17 is arranged on the circumferential side in the socket 16, which, when the filling head 3 is screwed into the receiving sleeve 1, the neck of the compressed gas cartridge penetrating into the socket 16 2 encloses pressure-tight before the hollow mandrel opens the compressed gas cartridge 2 by net.
• the receiving sleeve 1 is also equipped with a ventilation hole 18, so that the interior of the receiving sleeve 1 is always depressurized.
• the receiving sleeve 1 therefore does not need to be designed as a pressure-resistant body. In particular, it can also be manufactured as a plastic part with low compressive strength.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
• Filling Or Discharging Of Gas Storage Vessels (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6434265

Family Applications (1)

Country Status (3)

Cited By (2)

Families Citing this family (3)

Citations (2)

Family Cites Families (1)

• 1991
  • 1991-06-19 DE DE19914120187 patent/DE4120187C1/de not_active Expired - Fee Related
• 1992
  • 1992-06-16 EP EP19920913277 patent/EP0542989A1/de not_active Withdrawn
  • 1992-06-16 WO PCT/EP1992/001354 patent/WO1992022447A1/de not_active Application Discontinuation

Patent Citations (2)

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