CN101268896A

CN101268896A - Structure of leg for swivel chair

Info

Publication number: CN101268896A
Application number: CNA2007101985392A
Authority: CN
Inventors: 朴渊庚
Original assignee: ELITE FUNITURE Co Ltd
Current assignee: ELITE FUNITURE Co Ltd
Priority date: 2007-03-20
Filing date: 2007-12-11
Publication date: 2008-09-24
Also published as: JP2008229315A; TW200838454A; KR100747010B1

Abstract

The invention relates to a rotary chair leg structure capable of dispersing load, particularly, in the leg of the rotary chair with 4 to 6 feet and having small movable trundle at the underside of the tiptoe end, the underside of the leg is further provided with a supporter for dispersing load, preventing the load from being centralized to the small trundle, thereby avoiding phenomenon of damaged and deformed small trundle.

Description

But the rotating chair leg structure of scatteredload

Technical field

The present invention relates to a kind of rotating chair leg structure of scatteredload, specifically, but relate to a kind of rotating chair leg structure that is provided with the scatteredload of support member in the leg bottom surface.

Background technology

Generally, as everyone knows, chair is made up of backrest, seat and the leg that supports it as furniture.

Usually according to the use and the life style of chair, motion is the chair of various forms.

On the other hand, recently in the middle of the working clan, be sitting in the clerk who works on the chair be sitting on the chair state down time of life longer, and according to the computer of popularizing rapidly etc., be sitting in the time of living on the chair to elongate.Also to be difficult for feeling tired under the state that is sitting in for a long time on the chair in order making, to have proposed on backrest and seat, to give the rotating chair of the various schemes of comfort.

Fig. 1 is the stereogram of common rotating chair.

As shown in Figure 1, rotating chair is formed with the leg 40 of seat 10, backrest 20, handrail 30, a plurality of pin 41 branches and the Caster 50 that is located at pin 41 bottom surfaces.

That is, described seat 10 downside central parts are provided with height regulating rod 11 by vertical direction.At the bottom surface of described height regulating rod 11 connection leg 40.

But above-mentioned traditional leg only is provided with Caster on the tiptoe bottom surface by radial formation, and when ground was inhomogeneous, the phenomenon that the load of a plurality of Casters concentrates on one or two took place often.At this moment, the soon just damaged easily or distortion by the Caster of concentrated load, and can not carry out its function.

That is to say that traditional leg is that Caster only is located at 4-6 tiptoe bottom surface by radial composition, and scatteredload.Inhomogeneous or be located at the Caster of tiptoe bottom surface when not parallel when the ground level, load focuses in one or two of these a plurality of Casters and the wear rate height causes breakage or distortion because of overload simultaneously, has reduced reliability significantly.

In order to address these problems, developed the rotating chair that is connected with Caster at the leg central portion in addition as the novel 20-0424721 of practicality number (being provided with the chair legs of Caster) and utility model 20-0314987 number (the leg structure of chair).

The common leg with 4-6 radial pin of these rotating chairs is provided with a Caster in addition on bottom central part.Load is not done the time spent, the Caster that is located at central portion in addition and ground a little at interval or contact, and stable dispersion is loaded.Thereby the life-span and the reliability of leg have greatly been increased.

But these traditional rotating chairs also are because of Caster is arranged on the leg bottom central part, and load focuses on the Caster that is positioned at the leg bottom central part on the contrary.Therefore, the phenomenon that Caster is damaged and be out of shape takes place.And all Casters all are connected the leg bottom surface, so undesirable any moving, therefore inconvenience can occur under the state that the user is seated.

Summary of the invention

The present invention proposes in order to address the above problem, but its purpose is to provide a kind of bottom surface at leg to be provided with support member prevents the scatteredload of Caster breakage and distortion with the load that disperses Caster rotating chair leg structure.

And, another purpose of the present invention is to be provided under the state that the user is seated, support member is contacted with ground and prevents under the state that the user is seated undesirable phenomenon that moves arbitrarily to occur, thus but the rotating chair leg structure of the scatteredload that facilitates to the user.

Description of drawings

Fig. 1 is the stereogram of common rotating chair;

But Fig. 2 is the bottom isometric view according to the rotating chair leg structure of the scatteredload of the first embodiment of the present invention;

Fig. 3 is the side cross-sectional view of Fig. 2;

But Fig. 4 is the bottom isometric view of the rotating chair leg structure of scatteredload according to a second embodiment of the present invention;

Fig. 5 is the side cross-sectional view of Fig. 4;

But Fig. 6 is the bottom isometric view of rotating chair leg structure of the scatteredload of a third embodiment in accordance with the invention;

Fig. 7 is the side cross-sectional view of Fig. 6;

But Fig. 8 is the exploded perspective view according to the supporting piece structure of the rotating chair leg structure of scatteredload of the present invention;

Fig. 9 is the side schematic view of the load of a third embodiment in accordance with the invention when not acting on the chair;

Figure 10 is the side schematic view of the load of a third embodiment in accordance with the invention when acting on the chair.

＜description of reference numerals 〉

50,110: Caster 41,120: pin

40,130: leg 140: support member

141: first 143: helical spring

145: second portion

The specific embodiment

In order to realize the invention is characterized in: possessing 4-6 pin and each toe end bottom surface is provided with in the rotating chair leg of removable Caster, be provided with the support member of scatteredload in the bottom surface of described leg in addition as above-mentioned purpose.

At this, described support member comprises: first, and this first forms with any material among metal, synthetic resin, the soft rubber, and rounded bar, protrudes in the bottom surface to form first fixed lobe; Helical spring, this helical spring upper end are inserted and secured on described first fixed lobe; And second portion, this second portion forms with any material among metal, synthetic resin, the soft rubber, and rounded bar, and the lower end enlarges gradually, protrudes in the above to form can insert and second fixed lobe of fixing described helical spring lower end.

And described support member is connected the bottom central part of described leg, with ground separation 4～10mm.

And, described support member is connected the bottom central part of described leg and is that the center is radial separately position at a certain distance with described bottom central part, be connected the support member and the ground separation 4～10mm of the bottom central part of described leg, it is far away more to be with the bottom central part of described leg that the center is radial interval, and the distance of described support member and ground separation is more little.

And described leg has the connecting hole that inserts described support member by engage thread or inserted mode in the bottom surface.

Below, but with reference to the leg structure of accompanying drawing detailed description according to the rotating chair of scatteredload of the present invention.

In following explanation the present invention, think the specifying main idea of the present invention when irrelevant, of correlation function or structure with detailed.Consider to define at following term in function of the present invention, can be according to differences such as user, operator's intention or conventions.Therefore, the whole content of the present invention is to give a definition in the basis.

But Fig. 2 is the bottom isometric view according to the rotating chair leg structure of the scatteredload of the first embodiment of the present invention.Fig. 3 is the side cross-sectional view of Fig. 2.But Fig. 4 is the bottom isometric view according to the rotating chair leg structure of the scatteredload of second embodiment of the invention.Fig. 5 is the side cross-sectional view of Fig. 4.But Fig. 6 is the bottom isometric view according to the rotating chair leg structure of the scatteredload of third embodiment of the invention.Fig. 7 is the side cross-sectional view of Fig. 6.But Fig. 8 is the exploded perspective view according to the supporting piece structure of the rotating chair leg structure of scatteredload of the present invention.

With reference to Fig. 2 to Fig. 8, but, be connected with the support member 140 that is used for scatteredload in the bottom surface of the leg 130 that possesses 4-6 the pin 120 that is connected with Caster 110 according to the rotating chair leg structure of scatteredload of the present invention.

At first, be provided with the connecting hole 131 that inserts support member 140 by engage thread or inserted mode in the bottom surface of leg 130.At this moment, the height of connecting hole 131 is preferably first 141 and the helical spring 143 that inserts following support member 140 and makes helical spring 143 flexible stable height.

Then, as shown in Figure 8, support member 140 comprises: first 141, and this first 141 forms with any material among metal, synthetic resin, the soft rubber, and rounded bar, protrudes in the bottom surface to form first fixed lobe 142; Helical spring 143, this helical spring 143 is used to provide elasticity, and the upper end is inserted and secured on described first fixed lobe 142; And second portion 145, this second portion 145 forms with any material among metal, synthetic resin, the soft rubber, and rounded bar, and the lower end enlarges gradually, protrudes in the above to be formed with can insert and second fixed lobe of the lower end of fixing described helical spring 143.At this, can use elastic caoutchouc to replace helical spring 143 (not shown).

And as Fig. 2 of first embodiment and shown in Figure 3, support member 140 is connected the central portion of leg 130 bottom surfaces, with ground separation 4～10mm.

And, Fig. 4 as second embodiment, the 3rd embodiment is extremely shown in Figure 7, what support member 140 was connected the bottom central part of leg 130 and pin 120 bottom surfaces is that the center is radial position separately with the bottom central part, be connected the support member 140 and ground separation 4～10mm of leg 130 bottom central part, it is far away more to be with leg 130 bottom central part that the center is radial interval, and support member 140 diminishes gradually with the distance of ground separation.

Below, but with reference to the action of Fig. 2 to Figure 10 detailed description according to the rotating chair leg structure of scatteredload of the present invention.

Fig. 9 is the side schematic view of the load of a third embodiment in accordance with the invention when not acting on the chair.Figure 10 is the side schematic view of the load of a third embodiment in accordance with the invention when acting on chair.

When the user was sitting on the rotating chair 100, load acted on the leg 130, because elasticity, the height of leg 130 reduces.

At this moment, when leg 130 reduced, the support member 140 that is connected the bottom central part of leg 130 will descend and kiss the earth.

At this moment, support member 140 and Caster 110 be kiss the earth all, thereby steady load disperses.

On the other hand, the load of rotating chair 100 more for a long time, the helical spring 143 of support member 140 is owing to its pressure compresses, so second portion 145 corresponding pressures and rising keep and the contacting of ground.

Thereby, prevent that load from only acting on the support member 140, and the phenomenon of support member 140 breakages occurs making.

On the other hand, the user is sitting under the state on the rotating chair 100 and will moves, when people's leg is placed the ground pressurization, act on that load on the leg 130 of rotating chair 100 disperses and leg 130 because elasticity and rising a little.Thereby support member 140 and ground are separately, and rotate mobile Caster 110.

Then, support member 140 is center when being radial interval and being provided with in the bottom central part of leg 130 with the bottom central part, can disperse more load.At this moment, support member 140 is according to its position needs adjustment height.Such as, can use following method, make the support member 140 of the bottom central part that is arranged on leg 130 highly be 4mm, the height that is the support member 140 at radial interval thereafter is 2mm, then the height of the support member 140 at interval is 1mm again.

Therefore, load is when acting on the rotating chair, support member kiss the earth and scatteredload, and the damaged or distortion of prevention Caster has prolonged the life-span significantly and has increased durability.

And, under the state that the user is seated, support member kiss the earth and prevent that rotating chair from moving arbitrarily.Thereby for the user facilitates.

Industrial applicability

But according to rotating chair leg structure as above-mentioned composition scatteredload of the present invention, in the leg bottom surface support member is set and prevents the phenomenon that load concentrates on Caster, thereby prevent the phenomenon that Caster is damaged and be out of shape, and under the state that is seated of user, support member kiss the earth and prevent that rotating chair from moving arbitrarily.Thereby for the user facilitates.

The present invention can differently be out of shape, and can adopt various forms.Detailed description in foregoing invention has only been stated according to the particular embodiment of the present invention.But, be not limited to describe in detail related special form in the present invention.The present invention includes inventive concept and all deformations in the category and equipollent and sub according to other attached claim definition.

Claims

But the rotating chair leg structure of 1 scatteredload is characterized in that, is possessing 4-6 pin and each toe end bottom surface is provided with in the rotating chair leg of removable Caster, is provided with the support member of scatteredload in addition in the bottom surface of described leg.
But 2, the rotating chair leg structure of scatteredload according to claim 1 is characterized in that described support member comprises:

First, this first forms with any material among metal, synthetic resin, the soft rubber, and rounded bar, protrudes in the bottom surface to form first fixed lobe;

Helical spring, this helical spring upper end are inserted and secured on described first fixed lobe; And

Second portion, this second portion forms with any material among metal, synthetic resin, the soft rubber, and rounded bar, and the lower end enlarges gradually, protrudes in the above to form can insert and second fixed lobe of fixing described helical spring lower end.
But 3,, it is characterized in that described support member is connected the bottom central part of described leg, with ground separation 4～10mm according to the rotating chair leg structure of the scatteredload of claim 2.
But 4, according to the rotating chair leg structure of the scatteredload of claim 2, it is characterized in that, described support member is connected the bottom central part of described leg and is that the center is radial separately position at a certain distance with described bottom central part, be connected the support member and the ground separation 4～10mm of the bottom central part of described leg, it is far away more to be with the bottom central part of described leg that the center is radial interval, and the distance of described support member and ground separation is more little.
But according to the rotating chair leg structure of the scatteredload of claim 1, it is characterized in that 5, described leg has threadably in the bottom surface or inserted mode is inserted the connecting hole of described support member.