WO2005122837A1 - Escabeau pliant - Google Patents

Escabeau pliant Download PDF

Info

Publication number
WO2005122837A1
WO2005122837A1 PCT/CN2005/000849 CN2005000849W WO2005122837A1 WO 2005122837 A1 WO2005122837 A1 WO 2005122837A1 CN 2005000849 W CN2005000849 W CN 2005000849W WO 2005122837 A1 WO2005122837 A1 WO 2005122837A1
Authority
WO
WIPO (PCT)
Prior art keywords
hinged
pedal
step stool
legs
support rod
Prior art date
Application number
PCT/CN2005/000849
Other languages
English (en)
Chinese (zh)
Inventor
Luhao Leng
Original Assignee
Luhao Leng
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 Luhao Leng filed Critical Luhao Leng
Publication of WO2005122837A1 publication Critical patent/WO2005122837A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C12/00—Step-stools
    • A47C12/02—Step-stools requiring conversion between the step and seat functions
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C12/00—Step-stools

Definitions

  • the invention relates to a step ladder, in particular to a foldable step stool.
  • the existing step stool generally includes two front legs, two rear legs, and a pedal; the upper ends of the two front legs are fixedly coupled with the upper ends of the two rear legs, respectively; and a pedal is fixed between the two front legs and the two rear legs.
  • the multiple step stools are completely closed for loading, which greatly reduces the carrying volume and reduces the transportation cost.
  • the back leg 2 ′ of the step stool is directly connected to the front leg 1 ′ through a hinge 4 ′.
  • the top pedal (seat board) 3 ′ In order to maintain stability during use, the top pedal (seat board) 3 ′ must be arranged between the front and rear legs.
  • the side of the step stool is "A", so the size of the top pedal (seat board) 3 'is limited. If you need a larger pedal (seat board) 3', you must increase the top pedal (seat board) 3 'The distance from the hinge of the front and rear legs, or increase the distance between the bottom of the front and rear legs. Therefore, the use of this type of step ladder is restricted.
  • the purpose of the present invention is to overcome the above-mentioned shortcomings, and provide a foldable step stool that can increase the area of the top pedal (seat board) arbitrarily, and uses safety and reliability.
  • the present invention is designed based on such a concept.
  • the front leg and rear leg connecting part of the prior art step stool and the top pedal (seat board) are combined into one, and a pair of support rods is added.
  • the front end of the support rod and the front legs are combined.
  • the rear end of the support rod is hinged to the back, and the top pedal is mounted on the support rod.
  • the invention also includes a pair of stay rods, the stay rods are hinged to the lower portion of the support rod; the front leg, the rear leg, the stay rod and the support rod are connected and connected.
  • a hinged four-link mechanism is formed; the hinged four-link mechanism is provided with a limit mechanism that can limit the hinged four-link mechanism to be folded in an open state.
  • the upper ends of the two front legs according to the present invention are fixedly connected to a front cross bar; the limit mechanism is arranged on the front cross bar, and the limit mechanism and the pedal cooperate to form a mechanism capable of preventing folding.
  • the included angle between the support rod and the front leg is greater than 90 °
  • the included angle between the support rod and the rear leg is greater than 90 °
  • the limiting mechanism of the present invention has a hanging buckle fixed on the front crossbar, the hanging buckle has an elastic hook, and the elastic hook is provided with a barb.
  • the elastic hook according to the present invention is a hook of a plastic part or a hook of a sheet metal part bent into a barb.
  • the top pedal is provided with a card hole, and the position of the card hole corresponds to the position of the limit mechanism provided on the front crossbar.
  • the card hole is provided with a flange that cooperates with the barb.
  • the flange assembly of the pedal assembly forms a mechanism to prevent folding.
  • One or several lower pedals are fixed between the two front legs; an auxiliary cross bar is fixed between the two rear legs.
  • the upper ends of the two rear legs extend upwards and backwards into two auxiliary frames, and an armrest is fixed between the upper ends of the two auxiliary frames.
  • the present invention has the following advantages: First, the step stool of the present invention is unfolded or folded by a hinged four-link mechanism. When unfolded to a predetermined position, The limit mechanism restricts the folding of the hinged four-link mechanism, so that the hinged four-link mechanism is in a stable state. At this time, the ladder stool is in an unfolded state and is in an open working state;
  • the ladder stool of the present invention has a limit mechanism provided on the front crossbar and a pedal assembly to form a mechanism capable of preventing folding.
  • a limit mechanism provided on the front crossbar and a pedal assembly to form a mechanism capable of preventing folding.
  • a hinged four-link is defined.
  • the mechanism of folding, opening or locking the limit mechanism is convenient, the locking limit is firm and reliable, and the user uses the ladder stool with high safety;
  • the side front legs, rear legs, and support rods are "h" shaped, and the included angle between the support rods and the front legs is greater than 90 °.
  • the included angle is greater than 90 °.
  • the hinge of the articulated four-link mechanism is generally hinged by rivets. When the articulated four-link mechanism is subjected to downward pressure, the structure is stable, and only the tensile force is applied to each hinge, and the rivet gap is eliminated and it is not easy to loose; Therefore, when the area of the top pedal (seat board) is large, the stability of the step stool can still be maintained.
  • the barb of the limit mechanism cooperates with the flange of the pedal assembly to form a mechanism to prevent folding, it is convenient to snore or lock the limit mechanism, and the lock limit is firm and reliable;
  • the elastic hook is a hook made of plastic or a hook bent into a sheet metal piece with barbs, which is convenient to manufacture and has low production costs;
  • the upper ends of the rear legs extend upward and backward into two auxiliary frames, and an armrest is fixed between the upper ends of the two auxiliary frames.
  • the user is convenient to use, and has high safety when climbing up a step ladder.
  • FIG. 1 is a schematic view of a three-dimensional structure of a step stool of the present invention in an unfolded state
  • FIG. 2 is a schematic diagram of the step stool of the present invention in an unfolded state
  • FIG. 3 is a schematic right side view of the step stool of the present invention.
  • FIG. 4 is a schematic cross-sectional view taken along A-A of FIG. 3;
  • FIG. 5 is a schematic diagram of the three-dimensional structure of the step stool of the present invention in the folding process
  • FIG. 6 is a schematic view of the three-dimensional structure of the step stool of the present invention in a folded state
  • Figure 7 is a schematic perspective view of a front leg assembly of the present invention.
  • FIG. 8 is a schematic perspective view of a hind leg assembly of the present invention.
  • FIG. 9 is a schematic exploded perspective view of the pedal assembly of the present invention.
  • Figure 10 is a schematic perspective view of a limiting mechanism of the present invention.
  • FIG. 11 is a schematic structural diagram of a prior art folding step stool.
  • a foldable step stool as shown in FIGS. 1, 2, 3, 4, 5, and 6, includes a front leg assembly 1, a rear leg assembly 2, a diagonal rod assembly 3, and a pedal assembly 4.
  • the front leg assembly 1, the rear leg assembly 2, the diagonal rod assembly 3, and the pedal assembly 4 are connected to form a hinged four-link mechanism.
  • a limit mechanism 5 is provided on the hinged four-link mechanism to prevent the hinged four-link mechanism from being folded in the open state.
  • the front leg assembly 1 includes two front legs 11, a front cross bar 12, and a lower pedal 13.
  • the upper ends of the two front legs 11 extend rearwardly into a hook-shaped body 111.
  • the left and right ends of the front crossbar 12 are fixedly coupled between the upper ends of the two front legs 11.
  • the left and right sides of the lower pedal 13 are fixedly coupled between the middle portions of the two front legs 11.
  • the position-limiting mechanism 5 includes a fixing sleeve 51 fixedly sleeved on the middle of the front crossbar 12, and a hanging buckle 52 extending upward from the upper surface of the fixing sleeve 51.
  • the hanging buckle 52 is provided with an elastic hook 521, and the elastic hook 521 is provided with a barb 5211.
  • the upper surface of the fixing sleeve 51 also extends upward into two auxiliary pieces 511.
  • the hanging buckle 52 is located between the two auxiliary pieces 511, and the height of the hanging buckle 52 is higher than the height of the two auxiliary pieces 511.
  • the limiting mechanism 5 is made of plastic parts.
  • the rear leg assembly 2 includes two rear legs 21 and an auxiliary cross bar 22.
  • the left and right ends of the auxiliary cross bar 22 are fixedly coupled between the middle portions of the two rear legs 21.
  • the upper ends of the two rear legs 21 extend upward and rearward into two auxiliary frames 23, and an armrest 24 is fixed between the upper ends of the two auxiliary frames 23.
  • the inclined rod assembly 3 includes two inclined rods 31.
  • the pedal assembly 4 includes a pedal 41 and two support rods 42.
  • the lower surface of the pedal 41 is recessed so that the sides of the pedal 41 form a frame.
  • the two supporting rods 42 are L-shaped.
  • the two support rods 42 are fixedly abutted to the left and right sides of the pedal 41, respectively.
  • the rear end portions of the two support rods 42 protrude from the rear end portion of the pedal 41.
  • the front part of the step board 41 abuts on the front crossbar 12.
  • the pedal 41 is provided with a latching hole 411, and the position of the latching hole 411 corresponds to the position of the limit mechanism 5.
  • the periphery of the card hole 411 extends downward into a positioning sleeve 4112.
  • the inner side surface of the positioning sleeve 4112 is provided with a flange 4111 that cooperates with the barb 5211.
  • the barb 5211 of the stopper mechanism 5 cooperates with the flange 4111 of the pedal assembly 4 to form a mechanism for preventing folding.
  • the upper ends of the two front legs 11 are riveted by rivets to be rotatably connected to the front ends of the two support rods 42 of the pedal assembly 4.
  • the upper ends of the two rear legs 21 are rotatably connected to the rear ends of the two support rods 42 of the pedal assembly 4 through rivets, respectively.
  • the front and rear ends of one stay rod 31 are rotatably coupled to the upper part of one front leg 11 and the middle and lower part of one rear leg 21 through rivets, and the front and rear ends of the other stay rod 31 are rotatably connected to the upper part of the other front leg 11 through rivets. And the middle and lower part of the other hind leg 21.
  • the foldable step stool of the invention has the advantages of simple structure, reliable use, large-scale industrial production, and good industrial applicability.

Landscapes

  • Ladders (AREA)

Abstract

L'invention concerne un escabeau pliant qui comprend des pieds avant, des pieds arrière et un appui-pied, ainsi qu'une paire d'entretoises et une paire de liaisons inclinées. Les extrémités avant des entretoises sont montées articulées respectivement aux pieds arrière, l'appui-pied est monté sur les entretoises et les liaisons inclinées sont montées articulées sur la face inférieure des entretoises. Les pieds avant, les pieds arrière, les entretoises et les liaisons inclinées constituent un mécanisme à quatre tiges de liaisons articulées, un mécanisme de limitation étant prévu sur ledit mécanisme. Ce mécanisme de limitation est utilisé pour empêcher le mécanisme à quatre tiges de liaison articulées de se plier lorsqu'il est déplié. Cet escabeau peut être plié et déplié par le mécanisme à quatre tiges de liaison articulées.
PCT/CN2005/000849 2004-06-15 2005-06-15 Escabeau pliant WO2005122837A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU2004200517058U CN2747972Y (zh) 2004-06-15 2004-06-15 一种可折叠梯凳
CN200420051705.8 2004-06-15

Publications (1)

Publication Number Publication Date
WO2005122837A1 true WO2005122837A1 (fr) 2005-12-29

Family

ID=35509374

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/000849 WO2005122837A1 (fr) 2004-06-15 2005-06-15 Escabeau pliant

Country Status (2)

Country Link
CN (1) CN2747972Y (fr)
WO (1) WO2005122837A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010051764A1 (fr) * 2008-11-06 2010-05-14 Leng Luhao Tabouret-escabeau
CN103783870A (zh) * 2014-02-28 2014-05-14 福州大学 一种多功能躺椅

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187381A (en) * 1986-03-08 1987-09-09 Beldray Ltd A step stool
GB2275606A (en) * 1993-01-27 1994-09-07 Abru Aluminium Ltd A folding stool
GB2331008A (en) * 1997-11-04 1999-05-12 Mark James Lazarus Step-stool with extendable legs
WO2000042286A1 (fr) * 1999-01-14 2000-07-20 R.M.M. Corp., Inc. Echelle/escabeau a verrou
US6427804B1 (en) * 2000-01-11 2002-08-06 Innovations For Trade And Technology Step-up stool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187381A (en) * 1986-03-08 1987-09-09 Beldray Ltd A step stool
GB2275606A (en) * 1993-01-27 1994-09-07 Abru Aluminium Ltd A folding stool
GB2331008A (en) * 1997-11-04 1999-05-12 Mark James Lazarus Step-stool with extendable legs
WO2000042286A1 (fr) * 1999-01-14 2000-07-20 R.M.M. Corp., Inc. Echelle/escabeau a verrou
US6427804B1 (en) * 2000-01-11 2002-08-06 Innovations For Trade And Technology Step-up stool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010051764A1 (fr) * 2008-11-06 2010-05-14 Leng Luhao Tabouret-escabeau
US8684139B2 (en) 2008-11-06 2014-04-01 New-Tec Integration (Xiamen) Co., Ltd. Step stool
CN103783870A (zh) * 2014-02-28 2014-05-14 福州大学 一种多功能躺椅

Also Published As

Publication number Publication date
CN2747972Y (zh) 2005-12-28

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