CN1109527C - Adjustable-length column for chair, tables or like and upright tube therefor - Google Patents
Adjustable-length column for chair, tables or like and upright tube therefor Download PDFInfo
- Publication number
- CN1109527C CN1109527C CN96105489A CN96105489A CN1109527C CN 1109527 C CN1109527 C CN 1109527C CN 96105489 A CN96105489 A CN 96105489A CN 96105489 A CN96105489 A CN 96105489A CN 1109527 C CN1109527 C CN 1109527C
- Authority
- CN
- China
- Prior art keywords
- upright tube
- annular section
- groove
- piston rod
- length adjustment
- 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.)
- Expired - Fee Related
Links
Images
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
- A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
-
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B9/00—Tables with tops of variable height
- A47B9/10—Tables with tops of variable height with vertically-acting fluid cylinder
Landscapes
- Chairs Characterized By Structure (AREA)
- Fluid-Damping Devices (AREA)
- Tables And Desks Characterized By Structural Shape (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
A support with adjustable length for chairs and tables comprises an upright tube and a length-adjusting element (2) installed in the tube (1). A piston rod (7) of the length-adjusting element (2) is installed in the bottom (9) of the upright tube (1). The bottom (9) is opened toward inside of the upright tube (1) and provided with a groove (19) projected toward the upright tube (1) in the inside in the radius direction and an annular part (20) which is joined to the groove (19) to fix the piston rod (7). The groove (19) and the annular part (20) are unitedly formed with the upright tube (1).
Description
Technical field
The present invention relates to a kind of column jecket and a kind of single wall upright tube of adjustable-length.
Background technology
The column jecket of well-known this adjustable-length comes from European patent EP 0 366 889B1 (corresponding to the 4 969 No. 619 patent of the U.S.).In the column jecket that these are known, the neck-in that upright tube is lower, cross section with a semicircular, this zone, semi-circular section forms a groove, and the opening of this groove is towards opening by the longitudinal axis direction at center and to upright tube inside.The chassis is to be supported by the front portion at upright tube edge.The front portion at edge and the inwall of upright tube separate.With a crimping on the upright tube, groove or similarly thing with towards the upper end of upright tube fixed underpan.This method itself has obtained good explanation in practice.
In addition, the column jecket of described adjustable-length is substantially similar to the column jecket of the described adjustable-length of the 4245 No. 826 patent of the U.S. (corresponding to German patent DE-U 76 23 238) herein, there, the edge that upright tube is lower is aduncate along radial direction.Like this, the chassis just can be placed on this limit.The bead portion that forms in upright tube can be used as towards the protective device of chassis upside.
Summary of the invention
Purpose of the present invention is exactly column jecket and the upright tube that a kind of general type is provided respectively, and this column jecket and upright tube have high stability, and structure is simple especially and very easy production.
According to the present invention, the column jecket and the upright tube of the adjustable-length that this purpose can be by a kind of so general type reach.
A kind of chair that is used for of the present invention, the column jecket of the adjustable-length of desk, comprise a single wall upright tube and pneumatic or hydropneumatic length adjustment parts, and upright tube and length adjustment parts are along coaxial being installed together of common central longitudinal axis, in upright tube, the overcoat of length adjustment parts is radially supported, and can be directed along axis direction, the piston rod of length adjustment parts is fixed on the bottom of upright tube near the direction along axis its free end, near the end of the upright tube that leaves the upright tube place away from overcoat, the bottom comprises a groove and an annular section, the opening of this groove is the inside towards upright tube, and be contained on the radial direction among the upright tube, this annular section and groove connect together, and piston rod is installed on the annular section, wherein, on the bottom, by an axial roller bearing support piston connecting rod, the diameter of annular section is characterized in that greater than the diameter of roller bearing: groove and annular section and upright tube are integrally formed.
A kind of chair that is used for of the present invention, single wall upright tube in the column jecket of the adjustable-length of desk, the axis of wherein pneumatic or hydropneumatic length adjustment parts can be movable arbitrarily coaxially along a central longitudinal axis, the overcoat of length adjustment parts is radially supported in upright tube, and can be directed along axis direction, the piston rod of length adjustment parts is being fixed to along axis direction near its free end on the bottom of upright tube, leaving the upright tube place away from overcoat, near the end of upright tube, the bottom comprises a groove and an annular section, the opening of this groove is the inside towards upright tube, and be contained on the radial direction among the upright tube, this annular section and groove connect together, and piston rod is installed on the annular section, this piston rod is to be supported by the axial roller bearing on the bottom, wherein: the diameter of annular section is characterized in that greater than the diameter of roller bearing: groove and annular section and upright tube are integrally formed.
According to the employed method of this invention, there is no need to carry out other independent operation to fix a special chassis by means of a crimping or similar thing.The stability of polycrystalline substance is very high so that compare with piston rod, even very big near near the upright tube bottom or the bearing bottom being connected to, the piston rod of length adjustment parts also can keep quite stable.
Further advantage will embody from dependent claims significantly.
By with reference to the accompanying drawings embodiment being described, the detailed content of this invention may be obvious that.
Description of drawings
Fig. 1 is vertical partial sectional view of a column jecket in this invention.
Fig. 2 is the longitudinal sectional view of partial view of the upright tube of column jecket.
The specific embodiment
Chair column jecket shown in the figure has a upright tube 1, and the gas spring 2 of an adjustable-length has been installed in upright tube 2, and it is a piston cylinder adjusting portion part that comes work with pneumatic or hydropneumatic mode.Upright tube 1 and gas spring 2 have a public longitudinal axis that passes through the center 3.
An overcoat 4 of gas spring 2 is supported in the guide rail axle sleeve 5, and can move along axis 3 directions.Guide rail axle sleeve 5 is mounted an end 6 shown in the figure, i.e. the end by the top of upright tube 1.The overcoat 4 of gas spring 2 is the overcoat of spring itself or the protective sleeve of that overcoat.
From the overcoat 4 outstanding parts of gas spring is a piston rod 7, and it is supported along the chassis 9 of the relative upright tube 1 of axis 3 directions by an axial roller bearing 8.Chassis 9 is set on the end 10 of upright tube 1, and 10 opposite the other end, end are first ends 6; In the drawings, end 10 is located at the bottom.The ledge 11 that passes the piston rod 7 of axial roller bearing 8 extends through the opening portion 12 on chassis 9, and opening portion 12 is concentric with axis 3.A shim liner 13 and a spring locking ring 14 prevent that ledge 11 from coming off to bottom, chassis direction.The diameter of opening portion 12 is greater than the diameter of ledge 11.Use this fixing means, gas spring 2 can be with respect to upright tube 1 rotation.Owing between ledge 11 and the opening portion 12 radial clearance 15 is arranged, thus gas spring 2 can be in guide rail axle sleeve 5 proper motion, in other words, do not depart from upright tube 1.By piston rod 7, gas spring 2 is fixed in the upright tube 1 along axis 3 directions at last.Like this, when driving the vertical adjustment of pin 16 driving gas springs do, the overcoat 4 of gas spring 2 will stretch out or indentation conduit 1.Drive the end that pin 16 is placed on the overcoat 4 of gas spring 2, an end opposite with it is piston rod 7.Chair surface or table top just are fixed on and drive pin 16 places.
Up to the present described column jecket is known and also can sees on market.It also can be used as the support column jecket of desk or similar object mainly as a kind of support column jecket of chair.For example, in Germany the 19 31 No. 012 patent (corresponding to the 3711 No. 054 patent of the U.S.) and European patent EP 0 133 524 B1 (corresponding to the 4979 No. 718 patent of the U.S.) or European patent EP 0 366 889 B1 (corresponding to the 4969 No. 619 patent of the U.S.), just describe and illustrate.
The whole chassis 9 of upright tube 1 is integrally formed in together with upright tube 1, and promptly it is formed by the distortion of upright tube.Be bottom 18 below the tapering part 17, it is that relative tapering part compression forms, and chassis 9 also forms on it.There is the groove 19 of a side opening in the upright tube 1 on chassis 9, and what link to each other with groove 19 in axis 3 directions is an annular section 20 that is substantially the plane.This annular section 20 radially extends to axis 3, and conduct simultaneously is the supporting plane of roller bearing 8 axially, and opening 12 passes wherein.
As seen from the figure, groove 19 is a semicircle approx, does not have slightly pointed edge, and the joint portion 21 between groove 19 and the annular section 20 also is circular, and promptly it is not a wedge angle.For between groove 19 and annular section 20, forming a level and smooth connection, setover significantly towards annular section 20 towards the outside 22 annular section 20, groove 19, depart from the zone, semi-circular section.
As seen from the figure, the inside diameter D of the part 18 of upright tube 1 is than big several times of the diameter of piston rod 7.And the diameter d of roller bearing 8 ' significantly less than inside diameter D.3 mean breadth is 30 millimeters to 50 millimeters to groove 19 along radial direction to axis.The diameter d of piston rod 7 approximately is 10 millimeters.Diameter d ' radius be 20 millimeters to 30 millimeters.
As shown in Figure 1, the ledges 11 that protrude downwards by bottom 9 formed by shim liner 13 and spring locking ring 14, good as if immerse oneself in bottom 9, because protruding, groove 19 exceeded annular section 20 downwards.Therefore spring locking ring 14 is to be protected in the groove 19.It can not be owing to having the multilayer carpet to come off on the ground.And unhurt danger when a user's pin is met the bottom of this upright tube.
Claims (6)
1. one kind is used for chair, the column jecket of the adjustable-length of desk, comprise a single wall upright tube (1) and pneumatic or hydropneumatic length adjustment parts, and upright tube (1) and length adjustment parts are along coaxial being installed together of a common central longitudinal axis (3), in upright tube (1), the overcoat of length adjustment parts (4) is radially supported, and can be directed along axis (3) direction, the piston rod of length adjustment parts (7) is fixed on the bottom (9) of upright tube (1) near the direction along axis (3) its free end, near the end (10) of leaving the upright tube (1) that upright tube (1) locates away from overcoat (4), bottom (9) comprises a groove (19) and an annular section (20), the opening of this groove (19) is the inside towards upright tube (1), and be contained on the radial direction among the upright tube (1), this annular section (20) and groove (19) connect together, and piston rod (7) is installed on the annular section (20), wherein, on bottom (9), by an axial roller bearing (8) support piston connecting rod (7), the diameter of annular section (20) (D ') is greater than the diameter of roller bearing (8) (d '), and it is characterized in that: groove (19) and annular section (20) and upright tube (1) are integrally formed.
2. column jecket as claimed in claim 1 is characterized in that: described groove (19) has one towards the outside (22) that annular section (20) departs from.
3. column jecket as claimed in claim 1 or 2 is characterized in that: joint portion (21) described groove (19) and annular section (20) is circular.
4. one kind is used for chair, single wall upright tube in the column jecket of the adjustable-length of desk, the axis of wherein pneumatic or hydropneumatic length adjustment parts can be movable arbitrarily coaxially along a central longitudinal axis (3), the overcoat (4) of length adjustment parts is radially supported in upright tube (1), and can be directed along axis (3) direction, the piston rod of length adjustment parts (7) is being fixed on the bottom (9) of upright tube (1) along axis (3) direction near its free end, upright tube (1) locates leaving away from overcoat (4), near the end (10) of upright tube (1), bottom (9) comprises a groove (19) and an annular section (20), the opening of this groove (19) is the inside towards upright tube (1), and be contained on the radial direction among the upright tube (1), this annular section (20) and groove (19) connect together, and piston rod (7) is installed on the annular section (20), this piston rod (7) is to be supported by the axial roller bearing (8) on bottom (9), wherein: the diameter of annular section (20) (D ') is greater than the diameter of roller bearing (8) (d '), and it is characterized in that: groove (19) and annular section (20) and upright tube (1) are integrally formed.
5. upright tube as claimed in claim 4 is characterized in that: described groove (19) has one towards the outside (22) that annular section (20) departs from.
6. as claim 4 or 5 described upright tubes, it is characterized in that: the joint portion (21) of groove (19) and annular section (20) is circular.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29508915U DE29508915U1 (en) | 1995-05-30 | 1995-05-30 | Adjustable column for chairs, tables or the like. and standpipe for this |
| DE29508915.6 | 1995-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1142343A CN1142343A (en) | 1997-02-12 |
| CN1109527C true CN1109527C (en) | 2003-05-28 |
Family
ID=8008732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96105489A Expired - Fee Related CN1109527C (en) | 1995-05-30 | 1996-05-22 | Adjustable-length column for chair, tables or like and upright tube therefor |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0745341B1 (en) |
| JP (1) | JP3848400B2 (en) |
| KR (1) | KR100374068B1 (en) |
| CN (1) | CN1109527C (en) |
| DE (2) | DE29508915U1 (en) |
| TW (1) | TW300426U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135095B (en) * | 2006-08-31 | 2011-02-02 | 海尔集团公司 | Full-automatic washing machine and washing method thereof |
| US10244861B1 (en) | 2015-01-24 | 2019-04-02 | Nathan Mark Poniatowski | Desktop workspace that adjusts vertically |
| US10893748B1 (en) | 2017-07-08 | 2021-01-19 | Office Kick, Inc. | Height adjustable desktop |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH105302A (en) * | 1923-02-19 | 1924-07-01 | Carel Olland Willem | Adjustable liquid damper. |
| DE1529723B2 (en) * | 1966-12-02 | 1977-03-10 | Stabilus Gmbh, 5400 Koblenz | SHOCK ABSORBER FOR HEIGHT-ADJUSTABLE FURNITURE PARTS |
| DE7623283U1 (en) * | 1976-07-23 | 1977-01-13 | Stabilus Gmbh, 5400 Koblenz | GUIDE COLUMN FOR CONTINUOUSLY HEIGHT ADJUSTMENT OF CHAIR SEATS |
| US4640484A (en) * | 1985-05-06 | 1987-02-03 | Fichtel & Sachs Industries | Support column with gravity dependent retention means |
| DE3833959A1 (en) * | 1988-10-06 | 1990-04-12 | Bauer Fritz & Soehne Ohg | LENGTH ADJUSTABLE COLUMN FOR CHAIRS, TABLES OR THE LIKE |
| IL98036A0 (en) * | 1991-05-02 | 1992-06-21 | Yoav Cohen | Plastic stand pipe support for load-bearing adjustable piston |
| DE4129089A1 (en) * | 1991-09-02 | 1993-03-04 | Suspa Compart Ag | Support column for chair or tables adjustable in length - has tubular upright with concentric axle inside it, and length adjustment inside housing, with piston rod and bearing discs. |
| DE4129513A1 (en) * | 1991-09-05 | 1993-03-11 | Schaeffler Waelzlager Kg | SPRING BEARING |
| DE4200786A1 (en) * | 1992-01-14 | 1993-07-15 | Suspa Compart Ag | LENGTH ADJUSTABLE COLUMN FOR TABLES, CHAIRS OR THE LIKE |
| DE4209218C2 (en) * | 1992-03-21 | 1995-03-16 | Fichtel & Sachs Ag | Vibration damper or suspension in telescopic design |
| DE9208620U1 (en) * | 1992-06-26 | 1992-09-03 | Fichtel & Sachs Ag, 8720 Schweinfurt | Pin joint for a vibration damper |
| DE4227553A1 (en) * | 1992-08-20 | 1994-02-24 | Stabilus Gmbh | Height adjustable support esp. for chair seat - has foot, upright, guide surface, support in bottom of upright. |
| US5511759A (en) * | 1994-05-26 | 1996-04-30 | Steelcase, Inc. | Hydraulic chair height adjustment mechanism |
-
1995
- 1995-05-30 DE DE29508915U patent/DE29508915U1/en not_active Expired - Lifetime
- 1995-10-05 TW TW084214324U patent/TW300426U/en unknown
-
1996
- 1996-03-29 EP EP96105026A patent/EP0745341B1/en not_active Expired - Lifetime
- 1996-03-29 DE DE59607065T patent/DE59607065D1/en not_active Expired - Lifetime
- 1996-04-26 JP JP10800996A patent/JP3848400B2/en not_active Expired - Fee Related
- 1996-05-22 CN CN96105489A patent/CN1109527C/en not_active Expired - Fee Related
- 1996-05-28 KR KR1019960018169A patent/KR100374068B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0745341A1 (en) | 1996-12-04 |
| DE59607065D1 (en) | 2001-07-19 |
| JPH09151977A (en) | 1997-06-10 |
| TW300426U (en) | 1997-03-11 |
| CN1142343A (en) | 1997-02-12 |
| JP3848400B2 (en) | 2006-11-22 |
| KR960040258A (en) | 1996-12-17 |
| EP0745341B1 (en) | 2001-06-13 |
| DE29508915U1 (en) | 1996-10-02 |
| KR100374068B1 (en) | 2003-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3520116B2 (en) | Longitudinally adjustable supports for chairs, desks, etc. | |
| KR950014657B1 (en) | Adjustable-length columns for chairs hables or the like | |
| US6176548B1 (en) | Tilt mechanism for chair having adjustable spring characteristics | |
| US4778198A (en) | Apparatus for compensating transverse forces in automotive struts | |
| JP4546983B2 (en) | Height adjustable chair prop | |
| AU6498399A (en) | Height adjustable pedestal for chairs and tables | |
| CN1109527C (en) | Adjustable-length column for chair, tables or like and upright tube therefor | |
| US5671975A (en) | Seating system with horizontal bar having seat portions connected thereto | |
| US20070252053A1 (en) | Self-Stabilizing Support Assembly for an Item Furniture | |
| US5586830A (en) | Pivoting and variable height table | |
| US3053571A (en) | Chair iron | |
| EP1060723A2 (en) | Adjustable side frame and wheelchair with adjustable side frame | |
| KR960001431Y1 (en) | Length adjustable gas spring and apparatus using it | |
| US11607050B2 (en) | Integrated folding foot rest and leg folding mechanism thereof | |
| CN214432623U (en) | Desktop board adjustable study table and hinged connection assembly | |
| CN1144902C (en) | Yarn brake and spindle installed same, double twisting spindle and double twister | |
| US5833182A (en) | Adjustable column | |
| CN1411765A (en) | Height-adjustable legs for supporting top | |
| CN207864849U (en) | Stainless steel tube with length fine adjustment function | |
| AU2005237138A1 (en) | A furniture leg assembly | |
| CN220500740U (en) | Adjustable folding trolley | |
| CN105029932B (en) | Automobile fitting locker supports leg | |
| CN219762921U (en) | Sofa foot with adjustable height | |
| JPH0216679Y2 (en) | ||
| GB2358792A (en) | Office style seat with small swivel mounted table for left and right hande d use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |