CN2393406Y - Chair bottom - Google Patents
Chair bottom Download PDFInfo
- Publication number
- CN2393406Y CN2393406Y CN 99235672 CN99235672U CN2393406Y CN 2393406 Y CN2393406 Y CN 2393406Y CN 99235672 CN99235672 CN 99235672 CN 99235672 U CN99235672 U CN 99235672U CN 2393406 Y CN2393406 Y CN 2393406Y
- Authority
- CN
- China
- Prior art keywords
- utility
- underframe
- model
- rack
- guide pin
- 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
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Abstract
The utility model provides an office chair pedestal, which comprises a bottom rack and a backrest supporting rack. The utility model is characterized in that the utility model also comprises two bending connecting bars and two pushing bars, and the bottom rack is flatly arranged on the connecting bars by a slotted hole arranged on the front part and the rear part of both sides of the bottom rack and is matched with a front guide pin and a back guide pin of the connecting bars. The backrest supporting rack is matched with the guide pin on the upper end of the connecting bar by the slotted hole arranged on the side of the lower section of the backrest supporting rack, and the backrest supporting rack is arranged above the connecting bar by the lower end of the backrest supporting rack and is connected with the upper end of the pushing bar. The lower end of the pushing bar is hinged with the back end of the bottom rack, and an extension spring is arranged between the back guide pin and the front step of the bottom rack. When a person leans backward, the backrest can incline along with the person, subsequently the chair seat also move horizontally, and thus a user obtains favorable comfortable feeling. The utility model is suitable for the manufacture of the chassis of a high-grade office chair.
Description
The utility model relates to furniture, particularly a kind of office chair chassis.
In prior art, office chair is equipped with a chassis, and this chassis is mainly by underframe, and back bracket places axle sleeve and seat support lift adjustment handle on the underframe to form.During assembling axle sleeve is anchored on the atmospheric pressure pole of foot rest, seat support and backrest is contained in respectively on underframe and the back bracket just can again.Handle seat support lift adjustment handle compressing atmospheric pressure pole during use and just can adjust the height of seat support.This chassis weak point is that underframe and back bracket are fixed together, and when promptly people swung back, its backrest was to tilt thereupon, makes the people feel not too comfortable.Though in prior art by on underframe, loading onto an elastic damper, and underframe be articulated in down on the pallet realize, backrest can be tilted when people swing back thereupon, but not enough be that underframe also tilts shank is lifted thereupon, even built on stilts, uncomfortable sensation is also arranged.
The purpose of this utility model is to provide a kind of backrest tiltable that makes, and seat support translation forward thereupon can obtain the office chair chassis of good comfort.
Task of the present utility model realizes by this way: this chassis comprises underframe, back bracket, connecting rod and two push rods of it is characterized in that two bendings in addition, underframe cooperates with the forward and backward pilot pin of connecting rod with the slotted hole of offering before and after its both sides and is flat on the connecting rod, the slotted hole that back bracket is offered with its hypomere side cooperates with the pilot pin of connecting rod upper end, and to link the top that is arranged at connecting rod on its lower end and the push rod, push rod lower end and underframe rear end are hinged, are provided with extension spring between the shelves before back pilot pin and underframe.
The utility model is like this work: when people be sitting on the office chair and the back by the time, backrest is just oppressed at its back, makes back bracket pass through the pilot pin of its slotted hole around the connecting rod upper end and rotates and produce inclination.Meanwhile, the push rod that links with the back bracket lower end just promotes underframe by jointed shaft, makes it slotted hole and moves forward along forward and backward pilot pin, drives the seat support reach.And when people did not afterwards lean on, the pulling force of spring moved after making underframe, made back bracket be returned to original comparatively vertical position by push rod again.From operation principle of the present utility model as can be known: when leaning on behind the people, backrest can be taken advantage of a situation and be produced, and also translation forward of seat support can not lifted shank, therefore produces the ten minutes good comfort, has realized the purpose of this utility model.
Fig. 1 is the vertical view of a kind of concrete structure of the utility model.
Fig. 2 is along the cutaway view of A-A line among Fig. 1.
As depicted in figs. 1 and 2, underframe 1 is with the steel plate punching press and the frame-like that is welded, and both sides are angle steel shape.Axle sleeve 2 is welded in the below of underframe 1, and seat support lift adjustment handle 3 is arranged on the end face of axle sleeve 2.Respectively have a preceding slotted hole 4 and back slotted hole 5 before and after on two sides of underframe 1.Crooked connecting rod 6 forms with round rolling.Underframe 1 is led 7 and 8 pins with the forward and backward slotted hole 4 of its both sides and 5 with two connecting rods, 6 horizontal segment settings forward and backward and is cooperated and place on connecting rod 6 horizontal segments.Back bracket 9 can be a frame-type, for saving material, can be made up of two blocks of angle steel, has slotted hole 10 in its bottom, side, and this slotted hole 10 cooperates with the pilot pin 11 of connecting rod 6 upper ends of bending.The lower end of crooked push rod 12 and rear end, underframe 1 both sides link, and its upper end links with back bracket 9 lower ends.Extension spring 13 is arranged between underframe 1 preceding crosspiece and the connecting rod 6 back pilot pins 8.
The utility model is suitable for office chair to be adopted.
Claims (1)
1, a kind of office chair chassis, comprise underframe (1) and back bracket (9), the connecting rod (6) and two push rods (12) that it is characterized in that two bendings in addition, underframe (1) is with before the slotted hole (4 and 5) offered before and after its both sides and the connecting rod (6), back pilot pin (7 and 8) cooperation is flat on the connecting rod (6), the slotted hole (10) that back bracket (9) is offered with its hypomere side cooperates with the pilot pin (11) of connecting rod (6) upper end, and to link the top that is arranged at connecting rod (6) on its lower end and the push rod (12), push rod (12) lower end and underframe (1) rear end are hinged, are provided with extension spring (13) between back pilot pin (8) and the preceding shelves of underframe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99235672 CN2393406Y (en) | 1999-03-31 | 1999-03-31 | Chair bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99235672 CN2393406Y (en) | 1999-03-31 | 1999-03-31 | Chair bottom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2393406Y true CN2393406Y (en) | 2000-08-30 |
Family
ID=34023600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99235672 Expired - Fee Related CN2393406Y (en) | 1999-03-31 | 1999-03-31 | Chair bottom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2393406Y (en) |
-
1999
- 1999-03-31 CN CN 99235672 patent/CN2393406Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |