EP2896391B1

EP2896391B1 - Folding chair

Info

Publication number: EP2896391B1
Application number: EP14200225.2A
Authority: EP
Inventors: Vítor Miguel Cunha Antunes
Original assignee: Auto-Ribeiro Lda
Current assignee: Auto-Ribeiro Lda
Priority date: 2014-01-16
Filing date: 2014-12-23
Publication date: 2016-11-09
Anticipated expiration: 2034-12-23
Also published as: EP2896391A1; PT2896391T; PT107407A

Description

Technical domain

The present application discloses a folding chair, which can be preferably used in the transport of persons with reduced mobility.

Background

The document FR2794643 discloses a folding chair that is characterized by having a chassis comprised of several parts connected to each other via axles, without armrests and without any opening mechanism of the type presented in the present application. On the contrary, the chair now disclosed reveals less technical complexity, while maintaining or even increasing the safety standards and the ease of use for the user.

Summary

The present application describes a folding chair that comprises the technical features as defined by claim 1. In another embodiment, the folding chair comprises sidebars (19) that oblige section (2) to rotate about axle (4) in a counter-clockwise direction.
In yet another embodiment, the sidebars (19) of the folding chair present a "s" configuration.

Description of the Figures

For an easier understanding of the invention the attached figures are joined, which represent preferred embodiments of the invention that, however, are not meant to limit the object of the present application.

Figure 1 illustrates a schematic representation of the folding chair in the open position, where reference numbers represent:
- 1,2,3 - Sections;
- 4,5 - Axles;
- 6 - Throttle;
- 7 - Upper retractable grips;
- 8 - Lower retractable grips.
Figure 2 illustrates a schematic representation of the folding chair in the open position, where reference numbers represent:
- 1,2,3 - Sections;
- 4,5 - Axles;
- 7 - Upper retractable grips;
- 8 - Lower retractable grips.
Figure 3 illustrates a schematic representation of the folding chair in the open position, where reference numbers represent:
- 4,5 - Axles;
- 6 - Throttle;
- 9, 10 - Arms;
- 11, 12 - Guide Axles;
- 13 - Guide tube;
- 14 - Tube;
- 19 - Sidebar.
Figure 4 illustrates a schematic representation of the opening and closing mechanism, where the reference numbers represent:
- 6 - Throttle;
- 13 - Guide tube;
- 14 - Tube;
- 15 - Pin;
- 16,16a - Fastening elements;
- 17 - Spring;
- 18 - Hole;
- 20 - Hole of the guide tube.
Figures 5 to 9 illustrate a schematic representation of the closing movement of the chair.

Description of the embodiments

The present application describes a folding chair of the type used for rest and transport of persons with reduced mobility, that comprises a chassis with three sections (1,2,3) connected together via two axles, (4,5) in order to allow its articulation, opening and closing mechanism, a set of upper retractable grips (7) and lower retractable grips (8) so as to allow and facilitate its handling. The chair thus presented allows, besides the easy handling of the entire structure, its transportation and packaging. In particular, sections (2) and (3) are connected together by the axle (4), thereby creating an articulation of the "scissor" type and sections (1) and (3) by the axle (5). Between the sections (1 and 2) arms (9) and (10) are applied which are composed of an opening that serves as a guide, respectively to the guide axles (11) and (12) and that, when the chair is open, i.e. in use, said arms (9) and (10) will block section (1), so that it does not move in either direction.
Between sections (2) and (3) an opening and closing mechanism is applied, formed by a telescopic system with a stroke that is sufficient for the opening and closing of the chair and which is composed of a throttle (6) with a pin (15) at one end thereof, coupled to a guide tube (13) via the fastening elements (16,16a), in whose inner face a spring (17) is coupled that allows said throttle (6) to maintain the pin (15), present at one end thereof, inserted into the hole (20) of said guide tube (13) and in hole (18) existent in tube (14).
It is noted that when the chair is open, the position of the hole (18) coincides with the hole (20) and the pin (15) this way traverses both. For the closure of the chair, the throttle is activated (6), withdrawing the pin (15) from the hole (18) present in the tube (14) and of the hole (20) of the guide tube (13), the chassis thereby moving as illustrated in Figures 5 to 8. In order to maintain the chassis stable, sidebars (19) are applied, which, in the closing movement force section (2) to rotate about the axle (4) in a counter-clockwise direction. The "s" shaped configuration of said sidebars (19) allows avoiding interference with any of the other structures when closing the chair.
The present embodiment is not, naturally, in any way restricted to the embodiments described herein and a person with ordinary skills in the area might provide plenty of changes without departing from the scope of the claims. The following claims define further preferred embodiments of the invention.

Claims

Folding chair for the transport of persons with reduced mobility comprising a chassis with a first section (1) connected with a third section (3) via a first articulating axle (5) and a second section (2) connected to said third section (3) via a second articulating axle (4), the connection between the second section (2) and the third section (3) forms an articulation of the "scissor" type, two arms (9 and 10) between the first section (1) and the second section (2) with an opening serving as guide for two guide axles (11 and 12) of the first section, configured such that when the chair is open said arms block the first section (1), so that it does not move in either direction, an opening and closing mechanism placed between said second section (2) and said third section (3) comprising a telescopic system composed of a throttle (6), with one pin (15) at one end thereof, coupled to a guide tube (13) via fastening elements (16,16a), in whose inner face a spring (17) is coupled that allows said throttle (6) to maintain said pin (15), present at one end thereof, inserted into a hole (20) of said guide tube (13) and in a second hole (18) existent in a guided tube (14), guided inside said guide tube (13), a set of upper retractable grips (7), a set of lower retractable grips (8).
Folding chair according to claim 1 comprising sidebars (19) that oblige the second section (2) to rotate about the second axle (4) in a counter-clockwise direction.
Folding chair according to the previous claim wherein the sidebars (19) present an "s" configuration.