EP0993401A1 - Dispositif de transport de personnes, notamment voiture d'enfant - Google Patents

Dispositif de transport de personnes, notamment voiture d'enfant

Info

Publication number
EP0993401A1
EP0993401A1 EP98939565A EP98939565A EP0993401A1 EP 0993401 A1 EP0993401 A1 EP 0993401A1 EP 98939565 A EP98939565 A EP 98939565A EP 98939565 A EP98939565 A EP 98939565A EP 0993401 A1 EP0993401 A1 EP 0993401A1
Authority
EP
European Patent Office
Prior art keywords
transport device
passenger transport
wheel
housing
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98939565A
Other languages
German (de)
English (en)
Inventor
Michael Kientzler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0993401A1 publication Critical patent/EP0993401A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/001—Steering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/18—Resilient suspensions of bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2301/00—Wheel arrangements; Steering; Stability; Wheel suspension
    • B62B2301/04—Wheel arrangements; Steering; Stability; Wheel suspension comprising a wheel pivotable about a substantially vertical axis, e.g. swivelling castors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2301/00—Wheel arrangements; Steering; Stability; Wheel suspension
    • B62B2301/20—Resilient wheel suspension using springs

Definitions

  • Passenger transport device in particular a stroller
  • the invention relates to a passenger transport device, in particular strollers, buggies, sports cars and the like.
  • Strollers usually have four or three wheels and are steered by slightly lifting the front wheels and then turning the rigid rear wheels. Buggies and sports cars either have trailing front rollers or trailing rollers on the front and rear. This design makes steering a stroller difficult.
  • the object of the invention is accordingly a steering system for a passenger transport device, in particular a stroller, with which a comfortable steering is possible in a purely mechanical manner by arm movement of the driver and also tight curves can be driven.
  • a stroller with at least one wheel and a push arm connected to the wheel and a person seat
  • the object of the invention is achieved in that the axis of the wheel is connected to the push arm via a swivel joint.
  • the driver can transmit a rotating or swiveling movement by turning or swiveling the thrust arm on the wheel axle and thus initiate cornering.
  • the swivel joint consists of a with the wheel axis, e.g. via a bracket, firmly connected torsion axis, to which the push arm is attached.
  • the angle between the wheel axis and the central axis of the torsion axis is smaller or greater than 90 ⁇ , preferably this is between 30 ⁇ and 50 ⁇ .
  • the torsion axis is surrounded according to the invention by a two-part housing, the first part of which is firmly connected to the wheel axis and the second part of which is fastened to the push arm and is firmly connected to the torsion axis. With a corresponding movement, the housing halves rotate against each other.
  • housings there are various options for the formation of the housing.
  • the formation in the form of two spherical halves is preferred.
  • housings in a rectangular, round, oval or the like shape can also be used advantageously.
  • the use of two disks lying on top of one another can also be advantageous.
  • the hemispherical shells are provided at their edges with a groove connection, which enables axial and peripheral intermeshing.
  • the wheel axles are designed as leaf springs according to the invention.
  • the suspension absorbs shocks directly on the individual wheel and is therefore not transferred to the steering. This suspension has the further advantage that impacts occurring on uneven paths are not transmitted to the person to be transported.
  • the leaf spring has an elliptical cross section, which preferably tapers towards the wheel hub.
  • This leaf spring principle makes the use of complex tension and compression spring mechanisms superfluous, since no joint parts are required.
  • a particularly suitable material for the leaf spring / wheel axle is glass fiber with a plywood core.
  • the preferred embodiment of the invention relates to strollers with two wheel axles. Both wheel axles are provided with a torsion axle.
  • the carriage frame and wheel axles are connected to each other in a rotatable manner via the spherical housing. A tilting movement of the carriage frame is converted into a steering movement of the wheel axles.
  • the rear axle preferably steers in the opposite direction to the front axle and thus also enables tight corners.
  • the stroller can be steered in a controlled manner.
  • the torsion axis ensures that the person pickup automatically returns to the normal driving position after cornering. Depending on the weight of the person, the torsion axis can be adjusted harder or softer.
  • FIG. 1 shows a side view of a two-axle stroller, an enlarged section through a housing being shown,
  • FIG. 2 shows an assembly picture of a housing corresponding to the sectional view of FIG. 1,
  • FIG. 3 shows the stroller according to FIG. 1 with the person seat inserted
  • FIG. 5 shows an embodiment of a chassis
  • Fig. 6 shows a view of the stroller from the front
  • the 1 has two wheel axles 22 which are each provided with two wheels 20.
  • the front wheel axle 20 is connected to a push arm 24 via a housing 36/38.
  • the push arm 24 is designed as a handle 32.
  • the push arm 24 is oval as shown in FIG. 6. The height of the push arm 24 can be adjusted via adjusting elements 23.
  • a support arm 26 On the push arm 24 there are articulated joints 30 in which a support arm 26 is mounted, the shape of which is shown in FIG. 6.
  • the support arm 26 is fastened to the rear wheel axle 22 via the housing 36/38.
  • the push rod 24 is connected to the support arm 26 via a locking bracket 28 and their position relative to one another can be fixed.
  • the pram can be folded by releasing the locking bracket 28.
  • the locking bracket 28 can also be designed as a removable luggage basket.
  • a receptacle 25 for a child's basket 34 (FIGS. 3 and 6) is also fastened opposite each other.
  • This can consist of a shell.
  • the receptacle can also be designed in such a way that the position of the child's basket 34 shifts only slightly from the normal position, particularly when cornering heavily.
  • FIG. 1 shows a section through the swivel joint 21 connected to the wheel axles 22.
  • the main part of this swivel joint 21 is the torsion axis 48, the central axis of which is identified by the dot-dash line at 40.
  • the torsion axis 48 is designed as an elastic spring. It consists of a cylindrical rubber part from which two pins protrude coaxially.
  • the pin 31 is fixed to the wheel axle 22 and the pin 32 is attached to the push arm 24.
  • a screw connection can be provided for the latter fastening.
  • the rotational movement of the rubber part of the torsion spring 48 is adjustable depending on its hardness. Elongation means softer, i.e. lighter, movement, pressing means harder, i.e. heavier, movement.
  • the setting is carried out by means of a handwheel 50,
  • a housing consisting of two ball halves 36, 38 is arranged coaxially around the torsion axis 48.
  • the lower ball half 36 is fixed to the wheel axle 22.
  • the upper ball half 38 is attached to the push rod. It has a fitting connection, for example a square, with the torsion axis 48 and is connected to the lower half 36 by screwing.
  • the housing half 38 can be rotated relative to the housing half 36 axially (adjustment of the torsional force) and peripherally (steering) relative to one another by means of the push rod 24. The rotation takes place via the push rod 24.
  • the housing halves are provided with a round groove connection.
  • the bearings 44, 46 consist, as can be seen in FIG. 2, of two ball half disks which have a common guide and can be rotated relative to one another.
  • the central axes 40 of the torsion axis 48 run at an angle to the wheel axis. In the exemplary embodiment shown, this is 30 °.
  • the torsion axis 48 of the front wheel axis 22 is inclined towards the direction of travel and that of the rear wheel axis 22 in the direction of travel.
  • FIG. 4 shows the inclined arrangement of the joint shell 36.
  • the wheels 20 are put together from two plastic parts and are provided with tires.
  • Figure 5 shows a plan view of a chassis of the four-wheeled stroller. The two axes are connected by a rod. It is shown that the two wheel axles 22 have different lengths, so that when the stroller is folded, the wheels 20 come to lie one behind the other and next to one another.
  • the axes turn in different directions of rotation, as is shown for a steering movement in one direction by the two arrows in FIG. 5.
  • the swivel joint / torsion axis is designed to be lockable for straight travel.
  • the bearing halves 44, 46 are firmly connected to the housing parts 38 and 36, respectively.
  • a spring pin is guided through the housing part 38 and the two bearing halves 44, 46 and can be activated via an actuating element mounted in the handling area of the push arm (24).
  • a construction train is connected to the spring pin, via which the spring pin is released or locked.
  • a further embodiment of the invention provides a radial guide assigned to the torsion axis, in which e.g. The rotational movement of the torsion axis can be limited via stops.
  • a preferred limitation is a 30 ° steering angle.
  • the invention was explained using the example of a stroller with four wheels. This can also be applied to other stroller designs. It is also suitable for other personal transport devices such as wheelchairs, hospital and nursing beds and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)

Abstract

L'invention concerne un dispositif de transport de personnes, notamment une voiture d'enfant, comportant au moins une roue (20) à laquelle est relié un bras de poussée (24), ainsi qu'un siège (34), l'essieu de roue (22) étant relié avec le bras de poussée (24) par l'intermédiaire d'une articulation tournante (21).
EP98939565A 1997-07-08 1998-06-30 Dispositif de transport de personnes, notamment voiture d'enfant Withdrawn EP0993401A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19728895 1997-07-08
DE19728895 1997-07-08
PCT/EP1998/003986 WO1999002389A1 (fr) 1997-07-08 1998-06-30 Dispositif de transport de personnes, notamment voiture d'enfant

Publications (1)

Publication Number Publication Date
EP0993401A1 true EP0993401A1 (fr) 2000-04-19

Family

ID=7834852

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98939565A Withdrawn EP0993401A1 (fr) 1997-07-08 1998-06-30 Dispositif de transport de personnes, notamment voiture d'enfant

Country Status (4)

Country Link
EP (1) EP0993401A1 (fr)
AU (1) AU8803098A (fr)
DE (2) DE19829076A1 (fr)
WO (1) WO1999002389A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1017961C1 (nl) * 2000-07-26 2002-02-08 Mutsy Bv Kinderwagen met bestuurbare wielen.
NL1015809C2 (nl) * 2000-07-26 2002-01-29 Mutsy Bv Kinderwagen met bestuurbare wielen.
US8323232B2 (en) 2000-08-24 2012-12-04 Cardiac Science Corporation Instrument with a two-part plunger for subcutaneous implantation
US7736330B2 (en) 2000-08-24 2010-06-15 Bardy Gust H Subcutaneous implantation instrument with dissecting tool and method of construction
AU2001286047A1 (en) * 2000-09-04 2002-03-22 Geoffrey Wilfred Barley Improvements relating to support systems
FR2839935B1 (fr) * 2002-05-21 2005-01-07 Ampafrance Poussette pour enfant, a train avant suspendu et directionnel
NL1031517C2 (nl) * 2006-04-05 2007-10-08 Maxi Miliaan Bv Wandelwagen.
WO2021124506A1 (fr) 2019-12-19 2021-06-24 ヤマハ発動機株式会社 Véhicule

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1387091A (en) * 1920-09-07 1921-08-09 Said Woolley Self-steering vehicle
US2552804A (en) * 1949-12-29 1951-05-15 Antone W Morris Flat tire dolly
US3618967A (en) * 1970-03-09 1971-11-09 Sugiyama Mfg Co Ltd Baby car
JP2521138Y2 (ja) * 1989-06-21 1996-12-25 コンビ株式会社 うば車の操舵機構
DE9112253U1 (de) * 1991-10-01 1991-11-28 Tsai, Cheng Cheh, An-Ting Hsiang, Tainan Steuerungsstruktur für den Griff und die Schwenkrollen eines Sportwagens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9902389A1 *

Also Published As

Publication number Publication date
DE19880917D2 (de) 2001-03-22
WO1999002389A1 (fr) 1999-01-21
AU8803098A (en) 1999-02-08
DE19829076A1 (de) 1999-01-28

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