CN201480668U

CN201480668U - Chair leg of chair

Info

Publication number: CN201480668U
Application number: CN2009201908352U
Authority: CN
Inventors: 王宁雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-05
Filing date: 2009-08-05
Publication date: 2010-05-26
Anticipated expiration: 2019-08-05

Abstract

The utility model discloses a chair leg of a chair, which comprises a chair leg body, as well as a hollow support leg and a pulley which are fixed at the bottom end of the body; the pulley is mounted on the support leg through a rotation device; a spring is arranged inside the support leg; one end of the spring is fixed in the support leg, and the other end thereof is fixedly connected with the rotation device; and the diameter of the pulley is less than the inside diameter of the support leg. Compared with the prior art, the chair leg provided by the utility model has the advantages that when the chair is no-load, the pulley is in contact with the ground, so that the chair can be moved conveniently; when a person sits on the chair, the spring is compressed due to the weight of the person's body, and the pulley moves to the interior of the support leg, so that the support leg and the pulley are in contact with the ground at the same time; and since the friction force between the support leg and the ground is very large, the chair can be prevented from moving at random.

Description

A kind of chair pin of chair

Technical field

The utility model relates to a kind of furniture, especially relates to a kind of chair pin of chair.

Background technology

At present, the employed chair of people, the office chair that especially slides, its chair pin mostly is fixedly caster, can make things convenient for the user to move chair, to adapt to more and more faster office rhythm, improves office efficiency.But the chair pin of family expenses chair is not provided with carriage usually, and promptly can not be light move especially for handicapped old man, disabled person etc., drags the strength that chair need cost a lot of money; If use the chair of band roller, when the user was sitting on the chair, chair was easy to move, and comfort level reduces greatly, but also brings injury might for handicapped people such as old man, disabled person.

The utility model content

The purpose of this utility model provides a kind of light laborsaving when mobile, is difficult for the chair pin of the chair that is moved during use.

To achieve these goals, the technical solution of the utility model is:

A kind of chair pin of chair, comprise chair script body, the hollow feet that is fixed on the body bottom and pulley, pulley is installed on the leg by whirligig, described leg inside is provided with spring, one end of spring is fixed on leg inside, the other end is fixedlyed connected with whirligig, and the diameter of described pulley is less than the internal diameter of described leg.Select the suitable spring of coefficient of elasticity for use, when making chair unloaded, have only pulley to contact, so can easily mobile chair with ground; When chair has people's seat, human weight compression spring, pulley motion makes leg contact with ground simultaneously with pulley to the inside of leg.Because the frictional force on leg and ground is very big, arbitrarily move so can prevent chair.

In the technique scheme, whirligig comprises flange, runing rest and wheel shaft, and the upper surface of described flange is fixedlyed connected with the lower end of spring, and the lower surface of flange connects runing rest, and described runing rest lower end is provided for installing the wheel shaft of pulley.

In the technique scheme, described runing rest comprises support bar and axle bed, and the upper end of support bar is fixed on the flange, and its lower end and axle bed flexibly connect.

In the technique scheme, described leg lower end fixedly installs backplate, and described backplate is vertical with the axis of leg.

In the technique scheme, described leg lower end fixedly installs backplate, and described backplate is the sheet material that is converted into the right angle, and its one side is vertical with the axis of leg.

The utility model adopts technique scheme, obtains following beneficial effect:

1, compared with prior art, the chair pin that the utility model provides when making chair unloaded, has only pulley to contact with ground, so can easily mobile chair; When chair has people's seat, human weight compression spring, pulley motion makes leg contact with ground simultaneously with pulley to the inside of leg.Because the frictional force on leg and ground is very big, arbitrarily move so can prevent chair.

2, the utility model adopts fixing spring in the leg, and spring connects the structure of pulley, and this kind is simple in structure, for conventional chair, also can install this kind chair pin easily additional.

Description of drawings

Fig. 1 is the structural representation of the utility model chair pin.

Fig. 2 is the structural representation of first embodiment of chair pin.

Fig. 3 is the upward view of Fig. 2.

Fig. 4 is the structural representation of second embodiment of chair pin.

Fig. 5 is the upward view of Fig. 4.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further described:

Shown in Figure 1, the chair pin of a kind of chair of the present utility model, body 1 bottom is fixed with hollow feet 3, pulley 5 is installed on the leg 3 by whirligig 7, leg 3 inside are provided with spring 9, one end of spring 9 is fixed on leg 3 inside, and the other end is fixedlyed connected with whirligig 7, and the diameter of pulley 5 is less than the internal diameter of leg 3.Select the suitable spring of coefficient of elasticity 9 for use, when chair was unloaded, pulley 5 contacted with ground, so can easily mobile chair; When chair has people's seat, human weight compression spring 9, pulley 5 moves to the inside of leg 3, makes leg 3 contact with ground simultaneously with pulley 5.Because leg 3 is very big with the frictional force on ground, arbitrarily move so can prevent chair.

Shown in Figure 1, whirligig 7 comprises flange 11, runing rest 13 and wheel shaft 15, and the upper surface of flange 11 is fixedlyed connected with the lower end of spring 9, and the lower surface of flange 11 connects runing rest 13, and runing rest 13 lower ends are provided for installing the wheel shaft 15 of pulley 5.Runing rest 13 comprises support bar 17 and axle bed 19, and the upper end of support bar 17 is fixed on the flange 11, and its lower end and axle bed 19 flexibly connect, and pulley 5 is installed on the axle bed 19 by wheel shaft 15.Pulley 5 just can be adjusted himself moving towards, Convenient chair according to the moving direction of chair like this.

Referring to Fig. 2 and Fig. 3, body 1 bottom is fixed with hollow feet 3, and pulley 5 is installed on the leg 3 by whirligig 7, and leg 3 inside are provided with spring 9, and an end of spring 9 is fixed on leg 3 inside, and the other end is fixedlyed connected with whirligig 7; Leg 3 lower ends fixedly install backplate 23, and backplate 23 is vertical with the axis of leg 3.As preferably, backplate 23 adopts soft plastic material, when spring 9 compressions, backplate 23 bottom surfaces closely contact with ground, clench ground, because backplate 23 increases with contact area of ground, increase the frictional force on chair pin and ground, thereby strengthened the antiskid function of chair.

Referring to Fig. 4 and Fig. 5, body 1 bottom is fixed with hollow feet 3, pulley 5 is installed on the leg 3 by whirligig 7, leg 3 inside are provided with spring 9, and an end of spring 9 is fixed on leg 3 inside, and the other end is fixedlyed connected with whirligig 7, leg 3 lower ends fixedly install backplate 23 ', as preferably, backplate 23 ' is for being converted into the sheet material at right angle, and its one side is vertical with the axis of leg 3.Backplate 23 ' adopts nonmetal anti-slip material, and relative fixed is in leg 3 lower ends, such as adopting screw to fix.

When spring 9 compressions, pulley 5 is retracted to leg 3 inside, and backplate 23 ' bottom surface closely contacts with ground, clenches ground, and backplate 23 ' increases with contact area of ground, has increased the frictional force on chair pin and ground, thereby has strengthened the antiskid function of chair.

Can damage to some extent through the long-term backplate that uses 23 ', adopt this kind structure, can change backplate 23 ' easily, increase the service life of chair pin.

Claims

1. the chair pin of a chair, comprise chair script body (1), be fixed on the hollow feet (3) and the pulley (5) of body (1) bottom, pulley (5) is installed on the leg (3) by whirligig (7), it is characterized in that, described leg (3) inside is provided with spring (9), one end of spring (9) is fixed on leg (3) inside, and the other end is fixedlyed connected with whirligig (7), and the diameter of described pulley (5) is less than the internal diameter of described leg (3).

2. the chair pin of a kind of chair according to claim 1, it is characterized in that, whirligig (7) comprises flange (11), runing rest (13) and wheel shaft (15), the upper surface of described flange (11) is fixedlyed connected with the lower end of spring (9), the lower surface of flange (11) connects runing rest (13), and described runing rest (13) lower end is provided for installing the wheel shaft (15) of pulley (5).

3. the chair pin of a kind of chair according to claim 2 is characterized in that, described runing rest (13) comprises support bar (17) and axle bed (19), and the upper end of support bar (17) is fixed on the flange (11), and its lower end and axle bed (19) flexibly connect.

4. the chair pin of a kind of chair according to claim 1 is characterized in that, described leg (3) lower end fixedly installs backplate (23), and described backplate is vertical with the axis of leg (3).

5. according to the chair pin of claim 1 or 4 described a kind of chairs, it is characterized in that described leg (3) lower end fixedly installs backplate (23), described backplate (23) is for being converted into the sheet material at right angle, and its one side is vertical with the axis of leg (3).