EP0280012A1 - Dispositif mécanique de réglage en hauteur avec opération contrôlée - Google Patents

Dispositif mécanique de réglage en hauteur avec opération contrôlée Download PDF

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Publication number
EP0280012A1
EP0280012A1 EP88100300A EP88100300A EP0280012A1 EP 0280012 A1 EP0280012 A1 EP 0280012A1 EP 88100300 A EP88100300 A EP 88100300A EP 88100300 A EP88100300 A EP 88100300A EP 0280012 A1 EP0280012 A1 EP 0280012A1
Authority
EP
European Patent Office
Prior art keywords
fact
sleeve
trunk
aforesaid
mechanical regulator
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Withdrawn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
EP88100300A
Other languages
German (de)
English (en)
Inventor
Ciancarlo Gualtieri
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.)
COMINBOX Srl
Original Assignee
COMINBOX Srl
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 COMINBOX Srl filed Critical COMINBOX Srl
Publication of EP0280012A1 publication Critical patent/EP0280012A1/fr
Withdrawn legal-status Critical Current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
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/28—Chairs or stools with vertically-adjustable seats with clamps acting on vertical rods

Definitions

  • the present invention concerns a mechanical travel regula­tor with controlled operation, particularly suitable for application on armchairs, easychairs, anatomical car-seats, shutters and similar items and furniture generally speak­ing, consisting of an internal tubular casing whose cen­tral area houses a sealed cell or tubular body containing a viscous fluid, such as oil or grease, where an end is left free to slide, being fitted with a protruding annu­lar body or a gasket, of a coaxial central rod provided with a plurality of concave annular seats at its extremity.
  • a viscous fluid such as oil or grease
  • the lower extremity of the aforesaid internal tubular cas­ing is constrained or linked to a piston having top trunk-­conic flare that matches the trunk-conic flare of the lower end of a second piston, also coaxial to the aforesaid rod, constrained to the upper external sleeve where seats or similar items to the sustained and regulated are applied.
  • Some elastic means such as helical springs, are applied between the internal tubular casing and the second piston, between the sleeve containing the first piston and the sliding intermediate tubular body, and between the same and the external container, with the function of regula­ting and guiding the action of the travel regulator mem­bers mentioned above and damping the system upon loading.
  • the means in the intermediate part of coaxial central rod have through holes or annular passage areas, so as to al­low a regulated oozing of viscous fluid contained in the aforesaid cell, thus obtaining a regulated, continous and controlled sliding of the internal tubular casing along the same rod, in one direction as well as the opposite.
  • the second piston presents some through holes housing an equal number of spheres which, in condition of engagement of the male and female trunk-conic parts of the aforesaid first and second piston engage themselves in the concave annular seats of the aforesaid central rod whilst they are disengaged, freeing themselves when the said pistons are moved away from one another by means of a pressure ex­erted on the regulating push-button, on the superior part of the same internal tubular casing.
  • Another disadvantage is constituted by the need for con­structing regulators of different dimensions to adapt them to the different heights of the elements they have to be applied on, such as armchairs, easychairs, stools, furniture and so on.
  • the invention solves the pro­blem by means of a mechanical travel regulator with con­trolled operation, allowing the following results and ad­vantages: the internal casing slides along the central coaxial rod with a controlled and slowing regulating mo­ vement, by means of a viscous fluid contained in an in­termediate sealed cell, oozing through the holes present on an annular body of the rod or along peripheric annular areas; the oozing of the viscous fluid imposes a slower but more regular innovation, thus each regulation is per­formed in a smooth and continuous manner, with no shoving, darting or shocks; the regulation devices are housed in a seat which is left free to slide into an intermediate tubular body, and is guided and positioned by means of a shock absorbing spring; the whole inside system is susta­ined, in relation to the external tubular body, fixed and containing the system, by a lower spring with shock absor­bing function in relation to the loads to which the me
  • Figures I and 2 show a first realisation of a mechanical travel regulator with controlled operation, including es­sentially an internal tubular casing, preferably consist­ing in several components suitably assembled together, and prcisely: a superior trunk (I), on the top of which is applied the push-button (2), that engages itself on the superior part of an intermediate junction (3) fitted with a peripheric annular shoulder (4), an inferior ex­ternal threading (5) and at least one internal peripheric groove where at least one elastic seal ring (6) is fitted.
  • the superior part of an intermediate tubular trunk (7) is screwed on the threading (5), until the annular shoulder (4) strikes the superior ledge (8).
  • the inferior edge (9) of the connection (3) forms inside the intermediate trunk (7) a superior boundary of the cell (I0), whose inferior boundary is obtained by the egde (9 ⁇ ) form­ed by screwing the inferior part of the same trunk (7) on the threading (II) on the superior extremity of an infe­rior tubular trunk (I2).
  • the inside part of the inferior tubular trunk (I2) has also at least one groove fitting at least one elastic ring (I3).
  • the internal tubular casing thus constituted substantially constitutes the hollow regulating pivot (I4), engaging it­self on (I5) a first piston (I6), with a superior trunk-­conic flare (I7).
  • a central rod (I8) passes, with a plurality of con­cave seats (I9) on its lower part and a prolonged shank (20) on its superior part, with at least one integral an­nullar body (2I), that can take several position in the cell (I0).
  • the elastic rings (6) and (I3) keep the cell (I0) preferably sealed so it may be partial­ly filled with a viscous fluid such as oil or similar it­ems, preferably grease, and maintained in such conditions.
  • the inferior tubular trunk (I2) of the hollow regulating pivot (I4) has an annular ledge (23) which is the stop of the same pivot (I4) against the top of the piston (24), in the stage of disengagement of the lower piston (I6).
  • the present invention has also a superior piston (24) en­gaged with the lower part of the external sliding sleeve (29). This piston (24) has in its lower trunk-conic ex­tremity (25) two or more radial holes (26), possibly in­clined, lodging an equal number of spheres (27) that can protrude at extremities.
  • the top female trunk-conic flare (I7), on the first pis­ ton (I6), and the lower male trunk-conic flare (25), on the second piston (24), are coaxially allineated, comple­mentary, and can be coupled one with the other.
  • trunk-conic flares (I7) and (25) of pistons (I6) and (24) In matching condition of trunk-conic flares (I7) and (25) of pistons (I6) and (24), the spheres (27) are pushed in­side the radial holes (26) and protrude in the internal part, engaging them in one of the annular concave seats (I9) of the central coaxial rod (I8).
  • a third spring (35) is positioned between the ledge (34) of the intermediate tubular body (3I) and the base (36) with bottom opening of external casing (37), with the fun­ction of absorbing all the shocks received by the whole complex with regard to the loads to which it is submitted.
  • a flat ball bearing consisting in spheres (38) between the fifth wheel (39) of central rod (I8) and the bottom (40) of intermediate tubular body (3I), allows for re­volving movements of the regulating complex, round its vertical axis.
  • the cell containing the viscous braking fluid in which the annular body (2I) is totally immersed can also be built in another position, mantaining the same characteristics, as shown in fig.2.
  • the cell (I0) is obtained in the interspace between the external casing (37) and the external sleeve (29).
  • Figures 3 and 4 show another form of realisation of a me­chanical regulator of travel with controlled operation, composed essentially of an internal tubular body (5I) divided into two distinct areas (52) as intermediate sle­eve (53) and two gaskets (54) applied at the ends of a rod(55) sliding through the center of said sleeve (53).
  • the distinct areas are completely filled with a fluid, such as: oil, grease or similar items, only allowed to ooze from one area to the other (52) and viceversa thro­ugh the annular gap (56) between the surface of the afore­said rod (55) and aforesaid through hole in the center of the intermediate sleeve (53).
  • the fluid is not allowed to get out nor to ooze at the extremity of tubular body (5I), as the gaskets (54) seal perfectly the inside walls of the aforesaid distinct areas (52).
  • the intermediate sleeve (5 ⁇ ) is linked with the upper ex­tremity of a second coaxial tubular body (57) whose infe­rior extremity is connected with the edge (58) of a pis­ton (24) also linked with the external sliding sleeve (29) sustaining the seats, or whatever else.
  • the final part of said piston (24) has a male trunk-conic shape (25), matching with a similar female trunk-conic shape obtained on a se­cond piston (I6) constrained to the lower extremity (I5) of a third tubular body (I4), coaxial and intermediate to the others (5I) and (57), allineated with a superior sle­eve (I) on top of which is situated an operating push-­button (2).
  • the lower extremity of the rod (55) is linked with a se­cond central rod (I8), provided with a plurality of con­cave annular seats (I9).
  • the superior pis­ton (24) is provided in its lower trunk-conic extremity(25) with two or more radial holes (26), preferably inclined, housing an equal number of spheres (27) allowed to protru­de at the extremities.
  • the detachement of the aforesaid flares (I7) and (25) is obtained by exerting a pressure on the superior button (2) or on the special lever, which in its turn will push the top extremity of the third tubular body (I4).
  • the lower extremity of the central rod (I8) is linked with two small cups (62) and(63), fitted one into the other and left free to revolve one inside the other, slipping on a lower ring (64).
  • the upper edges (65) and (66) of the cups support a superior spiral spring (32) and a lower spring (35) sustained by the base of the external casing (37)
  • the cups (62) and (63) are preferably made of self-lubri­cating material, the lower contact ring (64) being thus the element that allows revolving movements of the regula­tion complex, round its vertical axis.

Landscapes

  • Fluid-Damping Devices (AREA)
  • Braking Arrangements (AREA)
  • Actuator (AREA)
EP88100300A 1987-01-22 1988-01-12 Dispositif mécanique de réglage en hauteur avec opération contrôlée Withdrawn EP0280012A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT4680387 1987-01-22
IT4680387A IT1214092B (it) 1987-01-22 1987-01-22 Regolatore meccanico di corsa ad azionamento controllato
IT3490687 1987-12-22
IT3490687U 1987-12-22

Publications (1)

Publication Number Publication Date
EP0280012A1 true EP0280012A1 (fr) 1988-08-31

Family

ID=11258889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100300A Withdrawn EP0280012A1 (fr) 1987-01-22 1988-01-12 Dispositif mécanique de réglage en hauteur avec opération contrôlée

Country Status (2)

Country Link
EP (1) EP0280012A1 (fr)
IT (1) IT1214092B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109117532A (zh) * 2018-07-27 2019-01-01 江铃汽车股份有限公司 汽车轻量化优化方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529861A (en) * 1945-09-01 1950-11-14 White S Dental Mfg Co Adjustable seat supporting structure
GB1461951A (en) * 1974-05-08 1977-01-19 French Eng Ltd John Adjustable support devices

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529861A (en) * 1945-09-01 1950-11-14 White S Dental Mfg Co Adjustable seat supporting structure
GB1461951A (en) * 1974-05-08 1977-01-19 French Eng Ltd John Adjustable support devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109117532A (zh) * 2018-07-27 2019-01-01 江铃汽车股份有限公司 汽车轻量化优化方法
CN109117532B (zh) * 2018-07-27 2022-07-08 江铃汽车股份有限公司 汽车轻量化优化方法

Also Published As

Publication number Publication date
IT1214092B (it) 1990-01-10
IT8746803A0 (it) 1987-01-22

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