CN2206579Y

CN2206579Y - Three-claw chair leg with extended device

Info

Publication number: CN2206579Y
Application number: CN 94239760
Authority: CN
Inventors: 黄清峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-02
Filing date: 1994-12-02
Publication date: 1995-09-06
Anticipated expiration: 2004-12-02

Abstract

The utility model relates to a three-claw chair foot with an extending device, which relates to the feet and the legs of chairs. The three-claw chair foot with an extending device is provided with a main sleeve barrel which can be combined with a chair base, and the periphery of the main sleeve barrel extends out three supporting feet. The tail end of each supporting foot extends out a connecting horizontal rod, and both ends of the horizontal rod are respectively and fixedly provided with a wheel. The three-claw chair foot with an extending device not only has low cost and good firmness but also can make a user feel comfortable.

Description

Three-claw chair leg with extended device

A kind of three-jaw chair pin with extension apparatus of the utility model relates to pin, the leg of chair.General chair commonly used at present, because of its chair pin is not installed wheel, during the desire displacement, must stand up can be with whole chair displacement, the often people of displacement, quite inconvenience during for work; At this demand, someone designs a kind of chair of the usefulness of handling official business, the characteristics of this chair are that the back pad except seat has Cushioning Design, seat can be adjusted the height, end at each leg of chair pin also is provided with wheel, rely on wheel to make chair be easy to displacement, therefore when being seated at chair on and must omit the shift position time, must not stand up, only must be supported in ground and chair is applied a suitable thrust, chair slightly be moved get final product with pin.The office chair of this kind tool wheel, foot structure comprise a master collet shown in Fig. 5,6, the master collet periphery extends 3,5 legs again, respectively are installed with a wheel again at the leg end.And whether chair is firm, the number of leg is just quite important, as shown in Figure 5, about at interval 100 degree of each leg 81 of three-pawl type chair pin 80 are because of the chair pin is free to rotate, the relative position of 80 on seat 82 and chair pin can be changed at any time, so during as if seat, when the space of back pad 83 towards between two legs located, this moment, the seat person was under careless situation, back pad is applied backward the power that presses, the danger that chair is toppled over is promptly arranged; And five pawl formula chair pin, as shown in Figure 6, therefore about at interval 72 degree of each leg 91 of chair pin 90 dwindle the space of 91 of legs, when sitting, can maintain the leg top pulls in the state of back pad rear end, have the preferable effect of steadiness, but compare with three-pawl type chair pin on making, the problem of have promptly that die cost is higher, cost of material is higher or the like, and these costs account for considerable ratio on whole manufacturing cost, so the manufacturing cost of each chair is higher.Because of currently marketed highly competitive, if the manufacturing cost of chair improves, just the relative profit that makes chair reduces, thereby five pawl formula chair pin not only can reduce the competitiveness in market, and make the consumer can't obtain an inexpensive office chair.

In addition, the long-time probability of sitting of general office chair is quite high, and when long-time the seat, if all make both feet be contacted with ground, just make health remain on one specific be not comfortable posture, so the custom of people partly is positioned over both feet respectively on the leg of chair pin, with this posture the back is attached on the back pad, yet because of about at interval 72 degree of the leg of five pawl formula chair pin, if it is when both feet are positioned on the adjacent leg respectively, both feet are opened, not only unbecoming, and sit for a long time, also can feel under the weather.

The purpose of this utility model is to provide a kind of steadiness good, and low cost of manufacture makes the more comfortable chair pin of people of seat.

The utility model is achieved in that this chair pin, comprise can with the master collet of seat support combination, the master collet periphery is provided with three legs, extends at the end of each leg to be connected cross bar, the bottom, two ends of cross bar sets firmly wheel respectively, cross bar is arc or direct rod shape.

Because the utility model is at the terminal cross bar that extends of leg, set firmly wheel at the two ends of cross bar again, distance between each wheel is dwindled, though the basic framework of chair pin still belongs to the three-pawl type type, but its contact point to ground has increased by one times, thereby, weigh design of the present utility model with each side such as structure steadiness, manufacturing costs, can find out that the utility model possesses following characteristic:

(1) steadiness is good: the utility model is used the design of three legs, six wheel bodys, make the chair pin have the more strong point, when especially contacting with ground, more can keep preferable steady status, and make the angle that folder is pulled between each wheel less, this angle can be adjusted according to the length of cross bar, therefore form that the periphery, space still has the strong point between leg, when sitting, even this space just is positioned at the back pad rear end, also can produce add all in the back pad power that presses backward, thereby make its steadiness can be the same with five pawl formula chair pin, even be better than five pawl formula chair pin.

(2) low cost of manufacture: the utility model adopts the design of three-pawl type chair pin, make whole manufacturing cost low than five pawl formula chair pin, though the utility model is at the terminal cross bar that extends of leg, but whole die cost, cost of material are still low than five pawl formula chair pin, under the situation better at steadiness, that cost reduces, just can provide a cheap and good-quality chair.

(3) make the people of seat more comfortable: the utility model utilizes the terminal cross bar that extends of leg, and the person's that makes the seat both feet are placed in the two ends of same cross bar respectively, therefore the occupant are kept than comfortable posture, and can avoid both feet to open.

The following drawings and embodiment will be described further specific structural features of the present utility model:

Brief Description Of Drawings:

Fig. 1 is the three-dimensional appearance schematic diagram of the utility model chair pin.

Fig. 2 is the schematic top plan view of the utility model chair pin.

Fig. 3 is the schematic top plan view of the another kind of pattern chair of the utility model pin.

Fig. 4 is the schematic top plan view of another pattern chair pin of the utility model.

Fig. 5 is the schematic top plan view of traditional three-pawl type chair pin.

Fig. 6 is the schematic top plan view of traditional five pawl formula chair pin.

Embodiment 1: as shown in Figures 1 and 2, chair pin 10 of the present utility model has a master collet 11, the upper end of master collet 11 is connected seat support, form chair, the periphery of master collet 11 extends three legs 12, three legs 12 are to be connected one with master collet 11, at the leg 12 terminal cross bars 13 that extend, cross bar 13 is an arc, and the length of cross bar 13 is suitable, the wheel 14 that bottom, cross bar 13 two ends is set firmly remains on the cross bar 13 of being separated by, the folder that wheel is 14 angle of pulling, in the scope that chair is difficult for toppling over, wheel 14 is to be fixedly arranged on cross bar 13 bottoms with a locating shaft, makes up for directly compeling the mode of pulling between locating shaft and cross bar, the mode that also can be direct locking makes up, and makes wheel 14 do the 360 deg rotation in the locating shaft axle center.

Embodiment 2: as shown in Figure 3, the master collet 11 of the utility model chair pin and 12 of three legs are combined type, be to extend deck 111 at master collet 11 peripheries, form fixture block 121 in leg 12 corresponding end, utilize the clip of deck 111 and fixture block 121, fitted bolt locking more just makes master collet 11 and leg 12 form one, and all the other are with embodiment 1.

Embodiment 3: the terminal cross bar 13 that extends of the utility model leg as shown in Figure 4, be the design of direct rod shape, and make its same six wheels and ground state of contact of forming, all the other are with embodiment 1.

Shown in the embodiment 4, shown in the terminal cross bar 13 that extends of the utility model leg, be the design of direct rod shape, make its same six wheels and ground state of contact of forming, all the other are with embodiment 2.

Claims

1, a kind of three-jaw chair pin with extension apparatus, comprise can with the master collet (11) of seat support combination, master collet (11) periphery is provided with three legs (12), leg (12) bottom is provided with wheel (14), it is characterized in that: the end at each leg (12) extends linking cross bar (13), and wheel (14) is installed in the bottom, two ends of cross bar (13) respectively.

2, the three-jaw chair pin of band extension apparatus according to claim 1 is characterized in that: cross bar (13) is an arcuation.

3, the three-jaw chair pin of band extension apparatus according to claim 1 is characterized in that: cross bar (13) is a direct rod shape.