DE1978730U - LOCKABLE PNEUMATIC OR HYDROPNEUMATIC ADJUSTMENT DEVICE, IN PARTICULAR FOR FURNITURE. - Google Patents

Description

Stable industrial and. Trading company with "H." Koblens-Neuendorf Patent and utility model registration Blockable pneumatic or hydropneumatic ^ Veratelleinriohtunfft , ins «

special for furniture '

. The invention relates to a lockable pneumatic or hydro ^! pneumatic adjusting device, in particular £ ir furniture or similar A · richtungsgegenetände consisting of a cylindrical container in which a relative to the container inner wall sealed piston slides, dividing the interior dee container into two working chambers, weloher emerging at one of the container and Gagaa sealed these piston rod νer "is prevented, wherein there is arranged from the outside eporrbarer Durohlaß for connecting the two working spaces and the piston rod aufν a bore for receiving a valve body connected to a Betätigungestange has ·.

It is known to use a ring-shaped slide in such adjusting devices for hydraulic blocking, weloher on the Cylinder outer wall slides and through axial movement the bores arranged on both sides of a partition wall in the cylinder wall for the flow of the Releases or blocks pressure medium from each other · The axial movement of the annular slide is for example by a below the Hand lever arranged on the tabletop generated. The disadvantage of such a construction is that it has a very high due to the fixed partition has a large overall length "because it is displaced when the piston rod is retracted" th liquid reaches the bores in the cylinder wall, which the ' Bridge a fixed partition wall into the work area of the duroh one The compensating piston, which is axially movable and is sealed off from the cylinder, is separated from the gas filling. Another disadvantage is the large one Construction costs for the spring-loaded ring-shaped slide »whichever is opposite the one on both sides of the fixed plate in the cylinder wall» internal bores must be sealed by three seals · This seal » system requires extremely precise machining of the cylinder outer jacket,, so that perfect sealing is guaranteed. Order of the catch a perfect seal against the cylinder

* '* & »-Die outside Biohtetellen der- pollution auega-

"aaiist and",

'Bs was atieii scfaoa v @ 2 "g © @ © hlagen" the Durohlaßkaaäle In the permanently installed Partition wall or ia dea? Partition and in the flask, one? hydropneumatic see adjustment device duroh from the outside, actuatable shut-off devices to be * -close and in this way to achieve a hydraulic blocking. Bas or «strand the shut-off elements with threaded sleeves, which in ent» • "epröoaend © Gegekgöwinde the partition and the piston engage and'by, Turning the shut-off devices released the Durohlaßkanäle or “The shut-off devices are actuated by a Vi @ l © ec rod connected to them, which is pushed outwards through the hollow piston rod” leads is »By rotating the piston rod, the shut-off elements are opened or closed, as the polygon

are coupled, there is a stop for each shut-off device in both. The disadvantage of this construction is that the rotational movement of the piston rod and the associated piston di® piston seal is very heavily stressed. Another thing that such a hydraulic bleaching device is extremely effective is that otherwise a perfect sealing of the durometer is guaranteed.

Until you gave up? Invention iat it, a lockable pneumatic or hy- ■ äj; ^j 9p; ftcmaatiseli.QT er to create a setting device that avoids the main parts of the "aaaates, I © B @ tr" ktioa @ n, is simple in its structure and meets all of the "requirements set in" te Aawaadßag.

Eä £ "find" agsgeaäB this task is solved by the fact that the operrbar @ port from at least one radial to the piston rod axis «* arranged a Böteeag ia Arbeitsraura above the 8 pistons of the Kolbonstangenbofe « tion and the lockable valve and at the end of the piston rod in ■ · the other work space opens, the actuating rod iat area dö, a Burehlaesss is designed as a valve stem, which has a goringsren '■ «* ■ Durotaeea «has ala 4is Kolbonstaagenbohrung Daduroh is reached. . ■ that by axial displacement doa Ventllkörparo by means of the outside of the.

bodiöneadea Bstätißtingsetaage the passage from a working. a «m aalerea successes» "kaaüe la the actuating rod ala valve stem

is ₉ aio piston rod © does not need to be provided with a recess «» gea in axial «».

can be used as a piston rod without substantial machining. Sealing a construction of this type is therefore possible with simple means . , -,. ■ .. ·, · ■ ..... ', _: - i ....... - _; .. ■ ': ■ ·

According to a further feature of the invention, the valve stem is a cone · · ■ shaped valve body, which against the valve seat arranged in the piston rod is printed, whereby the valve is opened by extending the actuating rod out of the piston rod also very easy to manufacture and extremely reliable «

the invention shows, the arranged at the end of the valve stem Valve body has a larger Druohmesser than valve stem, where sioh ._ ..; as well as a conical diaphragm on the valve body and the valve stem located »which is pressed against the valve seat at the end of the piston rod will «When the operating rod is retracted into the piston rod, at. In this embodiment the valve is opened *.

A particularly simple sealing surface between the valve seat and 'valve body is obtained one by the fact that the valve seat at the end of the piston rod in see known way consists of an elastic sighting ring and the valve body is provided at its end with a stop for movement in the axial direction »

In the case of the present invention, the passage as well as that to be controlled from the outside active shut-off device is arranged in the piston rod, one obtains a very simple lockable pneumatic or hydropneumatic adjustment » facility, which has a short overall length and a large operating * security owns. ;

Further training opportunities and beneficial effects result from eich from the description of the structure and the mode of operation of the embodiments of the invention shown in the figures *

_{Fig. 1} shows a longitudinal section through the adjusting device according to the invention, the fluid passage of the working chambers separated from the piston in the piston rod being opened by lifting the actuating device.

■ '* JL W *

shows a lockable adjustment device in longitudinal section, at; ■■ "■,; which the liquid passage .. is opened by retracting the actuating ^rod;.: .; into the piston rod ... ·· '. ·

The adjusting device shown in FIG. 1 consists of the container 1 _t in which a piston 2 connected to the piston rod 4 is arranged so as to be axially movable and through the piston seal 5 against the inner wall of the container

■ is sealed. Compared to the container 1, the piston rod 4 is through the Piston rod seal 5 sealed. At least one radial to the KoIbenstan " exactly arranged bore 6 and the piston rod bore 7 and the den When the valve is open, the part carrying the valve seat 10 and provided with an axial bore provides a connecting channel to the one above the piston 2 Work space 19 with the work space 20 »The actuation

'Rod 11 is arranged in the piston rod bore 7 and has in the area of the flow channel a valve stem 8 and then the

_Λ conical valve body 9 on «that carry the valve seat 10 *

'.de part as well as the piston 2 are secured by the fastening nut 14 with the Piston rod 4 connected. At the end of the piston rod 4 protruding from the container 1, the connecting part 18 is attached which carries the spring 15

- and the seal 12 arranged at the end of the piston rod 4 against the actuating rod 11 presses,.

The mode of operation of the adjustment device is described below in accordance with the Described in Fig. 1 embodiment shown.

The container 1 is for installation in furniture, for example with the foot of a The table or chair unites the piston rod 4 with the table top or the seat plate is connected »In the position shown the piston rod 4 is retracted into the container 1 and the valve body 9 is pressed by the spring 13 against the valve seat 10, whereby the flow channel from work space 19 to work space 20 is blocked Adjustment device blocked in its lowest position »

To raise the part connected to the piston rod 4, _{the valve body $ y is placed} over the valve stem. 8 'connected to the actuating rod 11, by lifting it? Operating rod 11, waq through a not shown. Actuating lever can be done via crouching or thread «

from the valve seat 10 lifted ₉ woäuroh the aas at least one radial to the piston rod aohso a, age © s? ia @ t © n bore β of the? Piston rod bore 7 and dos üxieluu Bötasng la äem on the valve seat having soil existing passage from the work space 19 suia work space 20 is released * Under, the

of the Filllaeäiums- the Xalboa 2 is pushed to obea and thus also old of the iSisohplatte @te #, ej? Sitapldtte verbundsne Eolbenstango 4 »Including gQlaagi toe © ib. the AsyböitasaiM "19 vgrdrängto Fällmodium in den Ar * uQiiuTQtäM 20" When the height is reached, the passage through the Ifentilkfope ^ 9 ¥ @ ra @ hlooaam and the Vorctolloinrichtung is blocked.

fl © f © rfit @ ll © a the valve · »- featilseat 10 is lifted off with dar'Botaktivaatange 11» while the 4 is pressed into the container by hand at the same time. The precipitation medium now flows from the 20 ümmh uen passage into the working area 19 'Xst the gewiinsoh "· ao visä i @ s? Passage again through the valve body $ -

Bio Ia cages Z shown © Ausfiihrungsforia the invention differs verifiable m & h Fig® 1, characterized in that the 8'anschließend to the valve stem © a conically © Diohtflache 1 $ and at its end an on "impact having 1Ö} where as a valve seat 17, an elastic sealing ring is®

? / ir2siaigiwoiia is analogous to & ov described in £ * ig »1 · Here äv © li Mni & hvüR of the actuating rod 11 is inserted into the piston rod 4 15 v © a Veatiieits 1-7 ab'ohoboa and s © der Durohlaßi

from aind @@ teß3 oiuos ⁵ · raäial aur lolbenat & ngenaciise verlau tend® »Boteiwg 6 and the K © lb © nQtang © n, bore 7 consists»

He invention bQschräakt don't look.to the presented executionafor · asu iösiöi »» kaia in Hatoea äoa ISv'finäungQgQdAnkeno woitgoheaä varies, so iit bite piolawelao without further thanks? _f where 'this plastic part forms belepie & sweiuQ äiö kossieeii © Mohtfläohe 15'uaÄ iea Aaeolalag 16 ·

> 0 · β · 65 "■". '■

Claims (1)

Patent anjmrü eh © .1 * Bloekierbaye pneumatic © © the hydr © pneumatic adjustment device, insboaonfea for M8fe © l oöar similar furnishings, the best "<~ / -. <starting from © in a cylindricalea container, ia dom.a opposite the Be- ,,., holderiaaea ^ aad sealed piston slides, which? The interior of the Be «is". Mlters ia as two workers share who is loaded with "one of the container · V .. & uat» © t © »cl © äi uni against iiesaa sealed piston rod» ...., where auy Connection d © 2 · both work rooms oin from outside lockable ·· >: - ■■.}. rer SurohlaS is arranged and the piston rod has a hole to open · "·" ■ aaiasa © has an actuating rod connected to a · eiaam ¥ © atile body -; .ϊ - has ₉ oadwsöh gekenaaeiehnet »that the passage that can be shut off from the outside: ·. : · .From at least one bore «* i ■ '* ■ - ..: .- range (6) in the working space (19) above the piston (2) of the piston rods · ■ - ·. (?) feeteuag ttaä is the shut-off valve and at the-rod end of the piston © \ ■■ (4) into the other working space (20) Hünäet, said Actuate the? '- gaagastaag © (11) ia 35 © j © i The high passage is designed as a valve stem (8) which has a smaller diameter? has as a diö EoI rod hole (7) - Blockable pneumatic or hydropneumatic adjustment device in & h AnB ^ suQli I ₉ characterized in that the valve stem (B) has a conical valve body ($) which is pressed against the valve seat (10) which is located in the piston rack, whereby-i torch from »■ fate © a ä @ s Betä'ölgBagsataago (11) from the piston rod (4) äaa valve ■ '--geiffaet wigfio. .. - - pasumatisoh © © the hydropneumatic © adjusting device 'according to claim 1 ₉ thereby g @ leeaaaoiehn © 1; ₅ that äes having at the end of the valve "echaftea (B) arranged valve body © inen larger diameter than the Veatileehaft (8) and a conical" Mchifl-äehe located between the valve body and the valve stem (15) _$ facing the valve seat ( 1?) Is pressed on the Eado of the piston rod (4), whereby the valve is opened by moving the? Actuating rod (11) into the piston rod '(4) « Blookierbase pneumatic o & ew äydropaettinatiocho daawpeh giskennaQioUaeiig ßßi & o% Veatilaita (17) is tt & d dous? Ten'oillsigpes? at selnea Ssäa with a stop for the Böweguag la asialö »· sighting is provided ·