CN200983996Y

CN200983996Y - Chair feet

Info

Publication number: CN200983996Y
Application number: CNU2006201478562U
Authority: CN
Inventors: 侯宪沛
Original assignee: CHANGJI Co Ltd
Current assignee: CHANGJI Co Ltd
Priority date: 2006-11-22
Filing date: 2006-11-22
Publication date: 2007-12-05
Anticipated expiration: 2016-11-22

Abstract

A chair foot comprises a center base and a plurality of pulley assembly arms. Each pulley assembly arm comprises a pulley assembly part spaced to the center base, two side walls which space and link the pulley assembly part, a first rib which is spaced between the side walls and extends along the longitudinal directions of the side walls, and a plurality of second ribs which link the side walls and the first rib. Because the first rib is arranged almost parallel to the side walls and the second ribs are vertical to the first rib and links the first rib and the side walls transversely, the chair foot has the advantages of light weight and good structure strength etc.

Description

The chair pin

Technical field

The utility model relates to a kind of chair pin, particularly relates to a kind of chair pin of office seats.

Background technology

As shown in Figure 1, 2, be a kind of known chair pin 3, this chair pin 3 is one of them member of a unshowned chair of figure, and installs for several pulleys 4 of this chair, described chair pin 3 comprises: a central pedestal 31, and several are from these central authorities' pedestal 31 extended pulley assembling arms 32.

Described pulley assembling arm 32 is the outer peripheral faces by an assembling leg 311 of this central authorities' pedestal 31, extend towards radial outer end the equal angles compartment of terrain, each pulley assembling arm 32 all comprises: one with at interval pulley assembled portion 321 of this central authorities' pedestal 31, two intervals and roughly extend and be connected the sidewall 322 of this pulley assembled portion 321 and this central authorities' pedestal 31 and several oblique ribs 323 that are connected 322 of described sidewalls along an X-axis line direction.

Generally speaking, in order to take into account the demand of light weight and structural strength, so pulley assembling arm 32 is not solid setting, but the form that adopts above-mentioned rib 323 to design, this chair pin 3 is had under the advantage of light weight, and can reach certain structure intensity, so the design of described rib 323 is extremely important.And above-mentioned chair pin 3 is when other member that cooperates chair uses, because pulley 4 is rotary, after pulley 4 rotates, when making a central axis 41 parallel with this X-axis line direction by pulley 4, in other words, when the contact wire on pulley 4 and ground is vertical with this X-axis line, can cause a torsional moment to this pulley assembling arm 32, the main cause that this torsional moment causes chair pin 3 to damage easily often, and above-mentioned rib 323 is oblique setting with the X-axis line, when the moment that external force caused that is subjected to perpendicular to the X-axis line, the ability that its anti-crawl agentdefiection is turned round is relatively poor, so the structural design of this chair pin 3 remains to be improved.

The utility model content

The purpose of this utility model provides and a kind ofly can improve structural strength and have the chair pin that preferable anti-crawl agentdefiection is turned round ability.

The utility model chair pin comprises: a central pedestal, and several pulley assembling arms.Each pulley assembling arm all comprise one with this central authorities' pedestal at interval pulley assembled portion, two intervals and the sidewall, that are connected this pulley assembled portion and this central authorities' pedestal is disposed between described sidewall and first rib that extends along the length direction of sidewall, and second ribs of several the horizontal described sidewalls of connection and first rib.

The beneficial effects of the utility model are: by this first rib is rough parallel described sidewall and being provided with, second rib is laterally to be connected first rib and sidewall with the vertical setting of described first rib, and this kind structural design makes this chair pin have light weight and the advantage that promotes structural strength concurrently.

Description of drawings

Below in conjunction with accompanying drawing and a most preferred embodiment the utility model is elaborated:

Fig. 1 is a three-dimensional combination figure, show a kind of in the past the chair pin and the marriage relation of several pulleys;

Fig. 2 is the upward view of a part of this chair pin, shows the connection relationship of several ribs of this chair pin;

Fig. 3 is a three-dimensional combination figure, the marriage relation of a most preferred embodiment of demonstration the utility model chair pin and other member of a chair;

Fig. 4 is a upward view of this chair pin.

The specific embodiment

Consult Fig. 3,4, the most preferred embodiment of the utility model chair pin 1 is one of them member of a chair 2, and supplies a upright support bar 21 that is provided with of this chair 2, and several pulleys 22 are installed, this chair pin 1 comprises: a central pedestal 11, and several pulley assembling arms 12.

This central authorities' pedestal 11 comprises an assembling leg 111 of also installing for this support bar 21 around a central axis, and an assembly hole 112 that is defined and uprightly be provided with by this assembling leg 111.

Described pulley assembling arm 12 is to utilize plastic material one-body molded with this central authorities' pedestal 11, and extend towards radial outer end the outer peripheral face equal angles compartment of terrain of this assembling leg 111 certainly.Each pulley assembling arm 12 all comprises: one with this central authorities' pedestal 11 at interval and the pulley assembled portion of installing for pulley 22 121, two intervals and along an X-axis line extend and be connected the sidewall 122 of this pulley assembled portion 121 and this central authorities' pedestal 11, roof that is connected described sidewall 122 apical margins 123, two be disposed on 122 of described sidewalls and along first rib 124 of X-axis line extension, and several laterally connect second rib 125 of the described sidewall 122 and first rib 124 along Y-axis line extension.In other words, the sidewall 122 of present embodiment and first rib 124 all extend along a length direction, and rough being set in parallel, and described second rib 125 is vertical with described first rib 124.Need to prove that the number of first rib 124 of present embodiment is two, when reality is implemented, just can provide enough structural strengths as long as be provided with one, certainly, also can be provided with two with on gain in strength.

After the pulley 22 of the utility model and chair 2 waited other member assembling, because this chair 2 in use, pulley 22 can rotate relative to this chair pin 1, so can cause torsional moment to described pulley assembling arm 12 application of forces.Generally speaking, when a central axis 221 of pulley 22 turns to when parallel with this X-axis line direction, just during parallel this Y-axis line with the contact wire on ground of an outer surface of pulley 22, pulley 22 can apply an external force that is parallel to the Y-axis line to pulley assembling arm 12, and then produces torsional moment.And second rib 125 of the present utility model is parallel these Y-axis line settings, just the length direction of second rib 125 is directions of parallel external force, so 125 on second rib can be subjected to pushing or pullling of external force, do not act on second rib 125 and do not have torsional moment, be subjected to torsional moment and scratch twisting strain so can effectively prevent second rib 125.And described first rib 124 is vertically connected on 125 on second rib, can further strengthen supporting the anti-crawl agentdefiection of second rib 125 to turn round ability, and then promote the structural strength of this chair pin 1.

Need to prove that the rib of aforementioned chair pin in the past is oblique setting, the non-parallel setting of rib and external force direction just but press from both sides an angle value, so external force can cause the torsional moment that rib is scratched turn round to rib, rib is scratched to be turned round the back and just damages easily.And the utility model is to be parallel external force directions and being provided with by described rib 125, reduces the moment that external force causes whereby, and then the anti-crawl agentdefiection that strengthens chair pin 1 turns round ability, so the utility model can effectively improve the disappearance of chair pin in the past really.

By above explanation as can be known, the utility model mainly is to be rough parallel described sidewalls 122 and being provided with by described first rib 124, second rib 125 is and the 124 vertical settings of described first rib by this kind structural design, can make this chair pin 1 have light weight and the advantage that promotes structural strength concurrently.

Claims

1. chair pin, comprise: a central pedestal, and several pulley assembling arms, each pulley assembling arm all comprises a pulley assembled portion with this central authorities pedestal interval, and two intervals and connect the sidewall of this pulley assembled portion and this central authorities' pedestal, it is characterized in that: this pulley assembling arm also comprises first rib that is disposed between described sidewall and extends along the length direction of sidewall, and several laterally connect second ribs of the described sidewalls and first rib.

2. chair pin as claimed in claim 1 is characterized in that: described each pulley assembling arm also comprises a roof that is connected the sidewall apical margin.

3. chair pin as claimed in claim 1 is characterized in that: described central pedestal comprises an assembling leg, and an assembly hole that is defined by this assembling leg.