CN2204534Y

CN2204534Y - Rotary chair supporting disk

Info

Publication number: CN2204534Y
Application number: CN 94213515
Authority: CN
Inventors: 潘惠国
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-23
Filing date: 1994-05-23
Publication date: 1995-08-09
Anticipated expiration: 2004-05-23

Abstract

The utility model relates to a front fulcrum rotary chair supporting disk which is a fitting for a rotary chair and belongs to the technical field of the furniture. The utility model is composed of an upper supporting disk, a lower supporting beam, a spring device, a fulcrum shaft and a spring pressing plate. The utility model is characterized in that the fulcrum shaft is fixedly arranged at the front end of the upper supporting disk of which the left and the right are symmetrical, and the front end of the lower supporting beam is inserted into the fulcrum shaft and can rotate freely. The spring pressing plate is arranged in the lower supporting beam and fixedly connected with the fulcrum shaft, and the spring pressing plate and the upper supporting disk form an angle. Because of the action of a spring device and the spring pressing plate, the upper supporting disk and the lower supporting beam can be mutually opened and form the angle. Because the fulcrum of the supporting disk is arranged at the front end of a chair seat, when people lie on the chair, the front end of the chair seat is slightly raised, the defect of a turnup plate type supporting disk is overcome and people feel better.

Description

Rotary chair supporting disk

The utility model relates to a kind of seat pallet, and particularly a kind of fulcrum is the swivel chair pallet the preceding, belongs to field of furniture.

Present known swivel chair pallet is made up of top tray, following joist, fulcrum and spring assembly parts, after top tray and swivel chair seat back are fixing, swivel chair can be done suitable pitching around fulcrum, can make the user that comfort is arranged, but the pallet of doing the pitching adjustment now generally is " moving seesaw-type " structure, central authorities at the bottom of its fulcrum is located at, when the swivel chair backrest is swung back, the seat surface front end improves along with layback, the perk thereupon of seat person's shank and heel, the person's that makes the seat lower muscle can not get loosening, and is nervous on the contrary.In addition, can solve the bearing plate elastic fatigue effectively and produce the elastic plate breakage problem as patent CN2134104Y disclosed " seat elevation mount ", but fulcrum still can not address the above problem still in the middle part.

The purpose of this utility model provides a kind of fulcrum front fulcrum swivel chair pallet the preceding.

The technical solution of the utility model is such: front fulcrum swivel chair pallet comprises top tray, following joist, spring assembly and fulcrum, it is characterized in that fulcrum is fixedly installed on the front end of symmetrical top tray, following joist front end penetrates fulcrum and free to rotate, also be provided with fulcrum in following joist inside and fixedly connected, and, lean on spring assembly and spring bearer plate effect to open as above mutually between top tray and the following joist and say at angle with top tray spring bearer plate at angle.

Adopt such scheme, after front fulcrum swivel chair pallet and other parts of swivel chair are assembled into swivel chair, when the seat person is sitting on the swivel chair, because the fulcrum of swivel chair pallet is at the front end of seat support, during people's trunk bending backwards, backrest though chair base rear end decline is more, presents the attitude of lying along with spring compression layback, but the terrain clearance of seat support front end is raised very few, overcome the shortcoming of " moving seesaw-type " pallet, can make the human body lower muscle still be in relaxation state, the person is more comfortable to make the seat.

Description of drawings:

Fig. 1 is a cutaway view of the present utility model.

Fig. 2 is a user mode schematic diagram of the present utility model.

Among the figure: 1. top tray, 2. descend joist, 3. silently 4. tapering axle sleeves, 5. spring protecting sleeves, 6. adjusting handles, 7. spring safety washers, 8. square neck bolts, 9. springs 10. are strengthened little axle 11. spring bearer plates 12. fulcrums

The utility model is described in further detail below in conjunction with accompanying drawing:

Referring to Fig. 1, front fulcrum swivel chair pallet is made of top tray (1), following joist (2), spring assembly, spring bearer plate (11), fulcrum (12).Two of top tray, left-right symmetry, its cross section is " L " type, and end face is provided with two apertures, can fix with the seat support base plate by it, and the side front end is provided with each one of the branched shaft hole little axis hole (10) close with it; Following joist (2) by steel plate strike out "

" type; and be welded into the rectangular cylinder of hollow; the rear end, bottom surface is provided with the tapering axle sleeve (4) that can be connected with pipe in the swivel chair; the middle part is located a bottom surface before partially and is provided with spring protecting sleeve (5) hole; the end face corresponding with it is provided with the bolt square hole; the central lines of spring protecting sleeve hole and bolt square hole, and following joist both sides front end respectively is provided with a branched shaft hole and little slot.Top tray is connected by the fulcrum that penetrates its front end branched shaft hole with following joist, and connected mode is: fulcrum (12) is integrally welded with the top tray branched shaft hole, and fulcrum is movably connected with following joist branched shaft hole.

Inside at following joist is equipped with a spring bearer plate (11), and it penetrates fulcrum (12), and be fixed as one with it, fixedly rear spring pressing plate (11) and top tray (1) are provided with the little axle of reinforcement (10) again at the nearly middle part of spring bearer plate, at angle with enhancing spring bearer plate and top tray bonding strength.

In the spring guard aperture of subiculum soffit, be equipped with spring assembly, it has spring protecting sleeve (5), adjusting handle (6), spring safety washer (7), square neck bolt (8) and spring (9) part to form, the effect of this device is to make between top tray and the following joist to be an elasticity activity point of view, and its maximum angle is subjected to spring bearer plate (11) and the restriction of top tray (1) corner dimension.

The utility model can be widely used in seat, swivel chair furniture industry.

Claims

1, a kind of for the matching used front fulcrum swivel chair of swivel chair pallet, comprise top tray, following joist, spring assembly and fulcrum, it is characterized in that fulcrum (12) is fixedly installed on the front end of top tray (1), following joist (2) front end penetrates fulcrum and free to rotate, also be provided with fulcrum in following joist inside and fixedly connected, and with top tray spring bearer plate at angle.

2, by the described front fulcrum swivel chair of claim 1 pallet, it is characterized in that top tray has two, left-right symmetry, end face is provided with two apertures, and the side front end is provided with each one of the little axis hole that branched shaft hole is adjacent.

3, by the described front fulcrum swivel chair of claim 1.2 pallet, joist (2) is the rectangular cylinder of hollow under it is characterized in that, the rear end, bottom surface is provided with tapering axle sleeve (4), the middle part is provided with the spring protecting sleeve hole in the Qian Chu bottom surface partially, the end face corresponding with it is provided with the bolt square hole, and the both sides front end is respectively established a branched shaft hole and little slot.