EP0362159A1 - Pram with a braking system adapted to steps and ledges - Google Patents

Pram with a braking system adapted to steps and ledges Download PDF

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Publication number
EP0362159A1
EP0362159A1 EP89830413A EP89830413A EP0362159A1 EP 0362159 A1 EP0362159 A1 EP 0362159A1 EP 89830413 A EP89830413 A EP 89830413A EP 89830413 A EP89830413 A EP 89830413A EP 0362159 A1 EP0362159 A1 EP 0362159A1
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EP
European Patent Office
Prior art keywords
wheels
wheel
base
slide
supports
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.)
Granted
Application number
EP89830413A
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German (de)
French (fr)
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EP0362159B1 (en
Inventor
Mauro Brevi
Romano Brevi
Giuliano Brevi
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Brevi SRL
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Brevi SRL
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Publication date
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Priority to AT89830413T priority Critical patent/ATE75118T1/en
Publication of EP0362159A1 publication Critical patent/EP0362159A1/en
Application granted granted Critical
Publication of EP0362159B1 publication Critical patent/EP0362159B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
    • A47D13/00—Other nursery furniture
    • A47D13/04—Apparatus for helping babies to walk; Baby walkers or strollers
    • A47D13/043—Baby walkers with a seat

Definitions

  • the invention relates to children's carts and more particularly to a children's carriage provided with a stop system which does not prevent movement as soon as it encounters a step or a jump.
  • the trolley is already known, including in patent US 4,699,392 comprising a braking system capable of reacting to the presence of a step or a jump to prevent the trolley from moving beyond the safety margin.
  • the base of this cart carries a craus on the ground and has three pairs of wheels.
  • the wheels of each pair are mounted on a support tilting on a horizontal axis so that, if a wheel goes beyond the edge of a step it lowers and causes the lifting of the wheel on the opposite side.
  • the support on at least two wheels is lacking and part of the base rests on the ground preventing the advance of the carriage to save the child.
  • the cart in question comprises a cornice base (10) on which is fixed a frame (11) carrying a plate (12) with the housing for the child who will use the cart.
  • a profile (13) of rubber, plastic or the like directed downwards and intended to rest on the ground.
  • the base (10) is also provided with support wheels (14) arranged in pairs and conveniently placed and separated to ensure correct and balanced support for the carriage in the upright position.
  • each wheel being provided with a support (15) guided and movable in height in a housing (16) provided in the base (10).
  • the support (15) and the housing (16) are arranged so as to allow the sliding guide of the support (15) in the vertical direction.
  • the two ends of the slide (18) have chamfers (19) with opposite inclination which converge downwards, preferably at 45 °, and interact with two corresponding chamfers (20) provided on the vertical supports (15) of the wheels (14) .
  • the base (10) therefore lowers until it rests on the ground - v. Fig. 4 - and brake the further advancement of the carriage, also helped by the braking profile (13) along the perimeter of the base. This avoids the risk of a possible fall of the trolley from the steps and otherwise dangerous jumps.
  • the condition of use of the trolley is automatically reactivated as soon as the trolley is placed again with all its wheels on the same plane.

Landscapes

  • Handcart (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Closures For Containers (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Toys (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

This is a pram whose base (10) is equipped with several pairs of wheels (14) mounted on vertical supports (15), displaceable in respect of height and connected in pairs by means of a horizontal slide (18). When the two wheels of each pair bear on the same plane, their supports (15) are halted vertically in a condition of balance through the action of the slide (18); when a wheel overhangs a step or ledge, its support (15) descends, the slide (18) is displaced in the direction of this wheel, while the support of the other wheel is released and rises so that the base (10) of the pram can bear on the ground, preventing any subsequent movement. <IMAGE>

Description

L'invention concerne les chariots d'enfant et plus en particulier un chariot d'enfant muni d'un système d'arrêt qui n'empêche le mouvement aussitôt qu'il rencontre une marche ou un ressaut.The invention relates to children's carts and more particularly to a children's carriage provided with a stop system which does not prevent movement as soon as it encounters a step or a jump.

On connaît déjà le chariot dont au Brevet USA 4 699 392 comprenant un système de freinage capable de réagir à la présence d'une marche ou d'un ressaut pour empêcher le déplacement du chariot au-delà du marge de sécurité.The trolley is already known, including in patent US 4,699,392 comprising a braking system capable of reacting to the presence of a step or a jump to prevent the trolley from moving beyond the safety margin.

La base de ce chariot porte un moyen de frei­ nage au sol et est munie de trois paires de roues. Les roues de chaque paire sont montées sur un sup­port basculant sur un axe horizontal de sorte que, si une roue va au-delà du bord d'une marche elle s'abaisse et cause le soulèvement de la roue du côté opposé. En conséquence, l'appui sur au moins deux roues vient à manquer et une partie de la base s'ap­puie au sol en empêchant l'avance du chariot pour sauvegarder l'enfant.The base of this cart carries a frei swims on the ground and has three pairs of wheels. The wheels of each pair are mounted on a support tilting on a horizontal axis so that, if a wheel goes beyond the edge of a step it lowers and causes the lifting of the wheel on the opposite side. As a result, the support on at least two wheels is lacking and part of the base rests on the ground preventing the advance of the carriage to save the child.

C'est le but de cette invention de proposer un chariot d'enfant du type susdécrit, mais dans lequel la fonction d'arrêt au moyen de l'appui au sol de la base est obtenue tout simplement par un mouvement coulissant vertical des roues, ces roues étant indé­pendantes et normalement maintenues en position ni­vellée au moyen d'un coulisseau.It is the aim of this invention to propose a child carriage of the type described above, but in which the stop function by means of the support on the ground of the base is obtained quite simply by a vertical sliding movement of the wheels, these wheels being independent and normally maintained in a leveled position by means of a slide.

Le chariot d'enfant selon cette invention est essentiellement conforme à la revendication 1 et sa description plus détaillée est faite avec référence au dessin ci-joit, où:

  • la Fig. 1 montre une vue perspective du chariot avec une partie de sa base cassée pour mettre en évi­dence une paire de roues;
  • la Fig. 2 montre une vue d'en haut de la base du chariot;
  • la Fig. 3 montre une vue d'une paire de roues selon les flêches III-III en Figure 2, les roues ap­puyant sur le même plan; et
  • la Fig. 4 montre une vue analogue à celle en Figure 3, mais avec les roues appuyées sur plans diffé­rents et le chariot freiné au sol.
The child's cart according to this invention essentially conforms to claim 1 and its more detailed description is made with reference to the above drawing, where:
  • Fig. 1 shows a perspective view of the carriage with part of its base broken to highlight a pair of wheels;
  • Fig. 2 shows a top view of the base of the carriage;
  • Fig. 3 shows a view of a pair of wheels according to arrows III-III in Figure 2, the wheels pressing on the same plane; and
  • Fig. 4 shows a view similar to that in FIG. 3, but with the wheels resting on different planes and the carriage braked on the ground.

Le chariot en question comprend une base à corniche (10) sur laquelle est fixé un châssis (11) portant une plaque (12) avec le logement pour l'en­fant qui va utiliser le chariot. Le long du périmè­tre de la base (10) est monté un profil (13) en caoutchouc, matière plastique ou similaire dirigé vers le bas et destiné à appuyer au sol. La base (10) est aussi munie de roues d'appui (14) arrangées en paires et opportunément placées et écartées pour assurer un support correcte et équilibré au chariot en position droite.The cart in question comprises a cornice base (10) on which is fixed a frame (11) carrying a plate (12) with the housing for the child who will use the cart. Along the perimeter of the base (10) is mounted a profile (13) of rubber, plastic or the like directed downwards and intended to rest on the ground. The base (10) is also provided with support wheels (14) arranged in pairs and conveniently placed and separated to ensure correct and balanced support for the carriage in the upright position.

Plus précisement, il y a trois paires de roues pivotantes (14), chaque roue étant munie d'un sup­port (15) guidé et déplaçable en hauteur dans un lo­gement (16) prévu dans la base (10). Le support (15) et le logement (16) sont arrangés de façon à consen­tir le guidage à glissement du support (15) en di­rection verticale. ­More precisely, there are three pairs of swivel wheels (14), each wheel being provided with a support (15) guided and movable in height in a housing (16) provided in the base (10). The support (15) and the housing (16) are arranged so as to allow the sliding guide of the support (15) in the vertical direction.

Entre les supports (15) de chaque paire de roues (14), dans la base (10) est prévue une guide horizontale (17) pour un coulisseau (18) destiné à interagir avec les supports (15) des roues accou­plées (14). Les deux extrémitées du couliseau (18) présentent des chanfreins (19) à inclinaison con­traire qui convergent vers le bas, préférablement à 45°, et interagissant avec deux chanfreins corre­spondants (20) prévus sur les supports verticaux (15) des roues (14).Between the supports (15) of each pair of wheels (14), in the base (10) is provided a horizontal guide (17) for a slide (18) intended to interact with the supports (15) of the coupled wheels (14). The two ends of the slide (18) have chamfers (19) with opposite inclination which converge downwards, preferably at 45 °, and interact with two corresponding chamfers (20) provided on the vertical supports (15) of the wheels (14) .

Les roues (14) et leurs supports (15) se dé­placent vers le bas par gravité et quand elles ap­puient sur le même plan (21) sujettes à un poids leurs supports sont bloqués par le coulisseau (18) qui n'empêche tout mouvement vers le haut. En effet, le coulisseau (18), grâce à l'accouplement en (19, 20) avec les supports (15), maintient les roues (14) en position active dans laquelle la base (10) du chariot est soulevée du sol. Cette condition s'éta­blie automatiquement à l'appui du chariot au sol grâce aux poussées entre les supports et le coulis­seau et permet un emploi normal et correcte du cha­riot (Figures 1 et 3).The wheels (14) and their supports (15) move downwards by gravity and when they press on the same plane (21) subject to a weight their supports are blocked by the slide (18) which does not prevent any movement towards the top. Indeed, the slide (18), thanks to the coupling at (19, 20) with the supports (15), keeps the wheels (14) in the active position in which the base (10) of the carriage is raised from the ground. This condition is established automatically when the trolley is pressed on the ground thanks to the thrusts between the supports and the slide and allows normal and correct use of the trolley (Figures 1 and 3).

Par contre, si une des roues va au-delà du bord d'une marche ou ressaut et partant dans un vide, la roue elle-même et son support se déplacent vers le bas par gravité en s éloignant du coulisseau (18). A ce moment, ce coulisseau est poussé en di­rection longitudinale par l'autre roue encore char­gée et se déplace vers le support baissé en permet­tant ainsi la montée de l'autre roue qui est encore appuyée.On the other hand, if one of the wheels goes beyond the edge of a step or jump and leaving in a vacuum, the wheel itself and its support move down by gravity away from the slide (18). At this moment, this slide is pushed in the longitudinal direction by the other wheel still loaded and moves towards the lowered support thus allowing the rise of the other wheel which is still pressed.

La base (10) s'abaisse donc jusqu'à s'appuyer au sol - v. Fig. 4 - et freiner l'avancement ulté­rieur du chariot, aussi aidée par le profil de frei­nage (13) le long du périmètre de la base. On évite ainsi le risque d'une chute éventuelle du chariot dès marches et ressaut autrement dangéreux.Par ail­leurs, la condition d'emploi du chariot est réacti­vée automatiquement aussitôt que le chariot est pla­cé de nouveau avec toutes ses roues sur le même plan.The base (10) therefore lowers until it rests on the ground - v. Fig. 4 - and brake the further advancement of the carriage, also helped by the braking profile (13) along the perimeter of the base. This avoids the risk of a possible fall of the trolley from the steps and otherwise dangerous jumps.In addition, the condition of use of the trolley is automatically reactivated as soon as the trolley is placed again with all its wheels on the same plane.

Claims (4)

1.) Chariot d'enfant avec un système pour l'arrêter en présence de marches ou ressauts et com­prenant une base a corniche (10) munie de plusieurs roues d'appui (14) arrangées deux à deux, caracté­risé en ce que chaque roue (14) est portée par un support vertical (15) guidé est déplaçable en hau­teur dans un logement correspondant (16) prévu dans la base (10), et en ce que entre les supports (15) de chaque paire de roues est monté un coulisseau horizontal (18) déplaçable horizontalement dans une guide (17) prévue dans la base (10) susdite et in­teragissant avec les supports des roues susmention­nées pour les arrêter et les maintenir au même ni­veau quand les roues appuient sur le même plan, chaque roue se déplaçant vers le bas par gravité et manque d'appui, au déplacement vers le bas d'une roue correspondant un déplacement vers le haut de la roue lui accouplée et l'appui au sol d'au moins une partie de la base pour empêcher tout mouvement du chariot.1.) Children's trolley with a system for stopping it in the presence of steps or jumps and comprising a cornice base (10) provided with several support wheels (14) arranged in pairs, characterized in that each wheel (14) is carried by a vertical support (15) guided is movable in height in a corresponding housing (16) provided in the base (10), and in that between the supports (15) of each pair of wheels is mounted a horizontal slide (18) movable horizontally in a guide (17) provided in the aforesaid base (10) and interacting with the supports of the aforementioned wheels to stop and keep them at the same level when the wheels press on the same plane, each wheel is moving down by gravity and lack of support, the downward movement of a wheel corresponding to an upward movement of the wheel coupled to it and the support on the ground of at least part of the base to prevent any carriage movement. 2.) Chariot d'enfant selon la revendication 1, caractérisé en ce que le coulisseau (18) présente deux chanfreins (19) à ses extrémités à inclinaisons contraires et convergent vers le bas, les supports (15) des roues accouplées (14) présentant deux chan­freins correspondants (20) interagissant avec ceux du coulisseau susdit.2.) Children's trolley according to claim 1, characterized in that the slide (18) has two chamfers (19) at its ends with opposite inclinations and converge downwards, the supports (15) coupled wheels (14) having two corresponding chamfers (20) interacting with those of the aforementioned slide. 3.) Chariot d'enfant selon la revendication 2, où les chanfreins coopérant du coulisseau et des supports des roues sont préférablement inclinés à 45°.3.) Children's cart according to claim 2, wherein the chamfers cooperating with the slide and the wheel supports are preferably inclined at 45 °. 4.) Chariot d'enfant selon les revendications précédentes, dont la base (10) est munie d'un profil périmétral en matière à frottement élevé (13) dirigé vers le bas et destiné à appuyer au sol quand au moins une roue se trouve au-delà du bord d'une mar­che ou d'un ressaut.4.) Children's trolley according to the preceding claims, the base (10) of which is provided with a perimeter profile made of high-friction material (13) directed downwards and intended to rest on the ground when at least one wheel is located beyond the edge of a step or a jump.
EP89830413A 1988-09-26 1989-09-25 Pram with a braking system adapted to steps and ledges Expired - Lifetime EP0362159B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89830413T ATE75118T1 (en) 1988-09-26 1989-09-25 WALKING SCHOOL WITH BRAKING DEVICE ON STEPS AND LEGS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT5215 1988-09-26
IT8805215A IT1226647B (en) 1988-09-26 1988-09-26 SWIVEL FOR CHILDREN WITH STOP SYSTEM IN THE PRESENCE OF STEPS OR DIFFERENCES.

Publications (2)

Publication Number Publication Date
EP0362159A1 true EP0362159A1 (en) 1990-04-04
EP0362159B1 EP0362159B1 (en) 1992-04-22

Family

ID=11119471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89830413A Expired - Lifetime EP0362159B1 (en) 1988-09-26 1989-09-25 Pram with a braking system adapted to steps and ledges

Country Status (5)

Country Link
EP (1) EP0362159B1 (en)
AT (1) ATE75118T1 (en)
DE (1) DE68901327D1 (en)
IT (1) IT1226647B (en)
PT (1) PT91807B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4119715A1 (en) * 1991-03-22 1992-12-17 Hsien Chen Chu RUNNING DEVICE FOR TODDLERS WITH STOP DEVICE AND SAFETY BELT
EP0875185A2 (en) * 1997-04-28 1998-11-04 Petite Star Products Limited Safety device
WO2004080664A1 (en) * 2003-03-11 2004-09-23 Zhouxin Zhang Walking structure of object
CN114010009A (en) * 2021-11-02 2022-02-08 姜再娟 Infant's safety walker of intelligent protection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4699392A (en) * 1986-04-24 1987-10-13 Cosco, Inc. Carriage
US4799700A (en) * 1987-10-08 1989-01-24 Cosco, Inc. Collapsible walker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4699392A (en) * 1986-04-24 1987-10-13 Cosco, Inc. Carriage
US4799700A (en) * 1987-10-08 1989-01-24 Cosco, Inc. Collapsible walker

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4119715A1 (en) * 1991-03-22 1992-12-17 Hsien Chen Chu RUNNING DEVICE FOR TODDLERS WITH STOP DEVICE AND SAFETY BELT
EP0875185A2 (en) * 1997-04-28 1998-11-04 Petite Star Products Limited Safety device
EP0875185A3 (en) * 1997-04-28 2000-03-01 Petite Star Products Limited Safety device
WO2004080664A1 (en) * 2003-03-11 2004-09-23 Zhouxin Zhang Walking structure of object
US7256559B2 (en) 2003-03-11 2007-08-14 Zhouxin Zhang Walking structure of object
KR100791615B1 (en) 2003-03-11 2008-01-03 조우신 장 Walking structure of object
CN114010009A (en) * 2021-11-02 2022-02-08 姜再娟 Infant's safety walker of intelligent protection
CN114010009B (en) * 2021-11-02 2023-12-22 云和县顶峰玩具有限公司 Intelligent protection infant safety walker

Also Published As

Publication number Publication date
ATE75118T1 (en) 1992-05-15
IT1226647B (en) 1991-01-31
IT8805215A0 (en) 1988-09-26
PT91807A (en) 1990-03-30
EP0362159B1 (en) 1992-04-22
DE68901327D1 (en) 1992-05-27
PT91807B (en) 1995-07-18

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