CN202080062U

CN202080062U - Telescopic caster device for chairs and stools

Info

Publication number: CN202080062U
Application number: CN2011201450638U
Authority: CN
Inventors: 黄传生
Original assignee: Guangdong Ocean University
Current assignee: Guangdong Ocean University
Priority date: 2011-05-04
Filing date: 2011-05-04
Publication date: 2011-12-21
Anticipated expiration: 2021-05-04

Abstract

A telescopic caster device for chairs and stools comprises a shell body (1), a shell cover (3), a spring (4), a piston (5) and a universal caster body (2), wherein the shell cover is in threaded connection with the shell body, the piston is connected with the shell body by a sliding rail and a chute, the piston is arranged on a protective ring of the shell body, and the piston and the universal caster body are connected by a square joint and a connection hole and fixed by screws. The shell cover and the shell body are not fixed firmly, the elastic force of the spring can be adjusted by the shell cover, the piston can protect the spring from being distorted and deformed, the protective ring of the shell body can prevent the spring from popping out parts when the chairs and the stools leave away from the ground, and with the connection by the square joint and the connection hole, the universal caster does not loose due to long-time horizontal rotation. The device can be directly arranged on or embedded in the legs of the chairs and the stools, is suitable for being installed and applied on the heavier chairs and stools at a library, a meeting room, a reception room, a training room, a hotel and guest house, families and the like, can ensure the portability and quietness during the moving of the chairs and the stools, and avoids the damage to a floor and the legs of the chairs and the stools.

Description

Chair stool telescopic leg wheel apparatus

Technical field

The utility model belongs to chair stool castor field, particularly a kind of chair stool telescopic leg wheel apparatus.

Background technology

Chair stool at present commonly used is generally more and more luxurious, and volume is bigger, and quality is heavier, moves quite effort, and promotes in moving process and drag Shi Douhui friction floor and make a noise, and scratches the floor, causes chair stool pin damage etc.Though now more existing telescopic caster wheeles are unreasonable because of designing, unsatisfactory in actual use.As invalid patent ZL200520098780.4, because of up and down simultaneously pressurized produce almost equal friction drag, ball can't rotate at all, does not have convenient effect of moving.And for example invalid patent ZL200820039071.2 is because of in the chair legs being unobstructed cavity structure, liftoff when unsettled when chair legs, spring will be deviate from the whole bullets of following parts, simultaneously, coil tension spring also can cause torsional deflection because of horizontally rotating of bottom driven.

Summary of the invention

In order to overcome the shortcoming that prior art exists, the utility model provides a kind of safe, practical, durable chair stool telescopic leg wheel apparatus, easily adorns readily removablely, is convenient to maintaining, moves light.

The utility model is achieved by the following technical solution: chair stool telescopic leg wheel apparatus, is placed in the body 1 by serial arrangement from top to bottom by cap 3, spring 4, piston 5 and universal wheel body 2, and cap 3 and body 1 are by being threaded.It is not solid dead to be threaded, and easy disassembly can be taken out the parts in the body at any time and change or maintenance.

Piston 5 is provided with chute 53, and body 1 is provided with slide rail 12, and piston and body are by chute, slide rail butt joint.Piston can only slide up and down, and can not horizontally rotate, and guarantees that spring can not be twisted distortion, prolongs its life-span and keeps its elasticity.

Be provided with guard ring 13 in the body 1, piston 5 places on the guard ring 13.Raise when liftoff when the chair stool, spring can not deviate from the parts bullet below it yet.

Piston 5 centers are provided with screw hole 52, and the bottom is provided with the square hole 52 that connects, and universal wheel body 2 tops are provided with square knuckle 22, and the center is provided with screw hole 21, piston and universal wheel body by square knuckle with connect the hole and be connected, use again by the screw of screw hole and fix.Such connection mode can guarantee the utility model device in use, can not cause getting loose because of horizontally rotating for a long time.

Cap 3 centers are provided with adjustment hole 32, according to the weight of chair stool, to be screwed into the elasticity that the different mode of depth degree is come regulating spring.

The utility model device both can be contained on the chair stool pin directly outward, also can be embedded in the chair stool pin.When needing mobile chair stool, utilize cardan wheel to exert oneself a little, just can move neatly.When the people on the chair stool, because of the effect of gravity, universal wheel body is pressed in the body fully, temporarily loses the slip ability, guarantee that the chair stool uses steadily and safety.

The utility model device simplicity of design, safe ready is durable, be convenient to maintaining, can not send sound during use, can not scratch the floor, can not damage chair stool pin yet, be fit to be installed on the heavier chair stool pin in places such as library, meeting room, reception room, Classroom, hotel, restaurant and family's dining room.

Description of drawings

Fig. 1 is the utility model integral structure scheme drawing

Fig. 2 is the transparent view of the utility model circumscribed body

Fig. 3 is the transparent view of the embedded body of the utility model

Fig. 4 is the structural representation of the utility model cardan wheel

Fig. 5 is the structural representation of the utility model cap

Fig. 6 is the transparent view of the utility model piston

Fig. 7 is the external scheme of installation of the utility model

Fig. 8 is the embedded scheme of installation of the utility model

The specific embodiment

Below in conjunction with concrete embodiment the utility model is described further.

At first, according to Fig. 2 pattern, process the body 1 of negative thread 11, slide rail 12, guard ring 13; Press the pattern of Fig. 4, process the universal wheel body 2 of screw hole 21, square joint 22, horizontal direction rotating disk 23, sphere runner 24, rotating shaft 25 and support 26; Press the style of Fig. 5, process the cap 3 of screw hole 31, adjustment hole 32 and outside thread 33; Press the apperance of Fig. 6 again, process screw hole 51, the square piston 5 that connects hole 52 and chute 53.

Then, universal wheel body 2 is inserted in from the lower port of body 1, piston 5 is put into from the upper port of body 1.Then the slide rail 12 pair of the chute 53 of piston with body connected, the square of piston connects on 22 pairs of the square joints of hole 52 and universal wheel body, puts screw into from the screw hole 51 of piston, and tightens after the screw hole 21 of cardan wheel is aimed at.And then spring 4 is put into from the upper port of body 1, with on 11 pairs of the negative threads of cap 3 outside threads 33 and body 1, cap 3 is screwed into 1 li of body again, according to the needs of elastic force, the degree of depth that decision is screwed into.Be assembled into complete chair stool telescopic leg wheel apparatus as shown in Figure 1 at last.

The external installation of this chair stool telescopic leg wheel apparatus is implemented as follows: as shown in Figure 7, earlier cap 3 usefulness screws are fixed on chair stool pin 6 bottom, body and cap that universal wheel body, piston and spring will be housed are again tightened.

The embedded installation of this chair stool telescopic leg wheel apparatus is implemented as follows: body in this case is made up of negative thread 11, slide rail 12, guard ring 13 and pin ear 14 according to the processing of Fig. 3 pattern; As shown in Figure 8, bore a hole that conforms to the body size bottom at chair stool pin 7, the assembling caster wheel device that finishes is put in this hole, the pin ear 14 usefulness screws by the body lower end are fixed on whole device in the chair stool pin.

Claims

1. chair stool telescopic leg wheel apparatus is pressed serial arrangement from top to bottom by cap (3), spring (4), piston (5) and universal wheel body (2), it is characterized in that: cap (3), spring (4), piston (5) and universal wheel body (2) place in the body (1), and cap (3) and body (1) are by being threaded.

2. chair stool telescopic leg wheel apparatus according to claim 1, it is characterized in that: described piston (5) is provided with chute (53), and body (1) is provided with slide rail (12), and piston (5) and body (1) are by chute, slide rail butt joint.

3. chair stool telescopic leg wheel apparatus according to claim 1 is characterized in that: be provided with guard ring (13) in the described body (1), piston (5) places on the guard ring (13).

4. according to claim 1,2 or 3 described chair stool telescopic leg wheel apparatus, it is characterized in that: described piston (5) center is provided with screw hole (52), the bottom is provided with the square hole (52) that connects, described universal wheel body (2) top is provided with square knuckle (22), the center is provided with screw hole (21), piston and universal wheel body by square knuckle with connect the hole and be connected, use again by the screw of screw hole and fix.

5. chair stool telescopic leg wheel apparatus according to claim 1 is characterized in that: described cap (3) center is provided with adjustment hole (32).

6. chair stool telescopic leg wheel apparatus according to claim 1 is characterized in that: described cap (3) is provided with the hole (31) more than 2.

7. chair stool telescopic leg wheel apparatus according to claim 1 is characterized in that: described body (1) lower end is provided with the pin ear (14) more than 2.