CN2496686Y

CN2496686Y - Retractable universal castor

Info

Publication number: CN2496686Y
Application number: CN 01255862
Authority: CN
Inventors: 田丰益
Original assignee: DONGKENG HAIWANGXING SPORTS GOODS FACTORY GONGMING TOWN BAO'AN DISTRICT
Current assignee: DONGKENG HAIWANGXING SPORTS GOODS FACTORY GONGMING TOWN BAO'AN DISTRICT
Priority date: 2001-09-20
Filing date: 2001-09-20
Publication date: 2002-06-26
Anticipated expiration: 2011-09-20

Abstract

The utility model relates to a retractable universal caster wheel arranged at the bottom of the object and used for traveling. The caster wheel has a wheel body 10 connected with the table leg, a wheel frame 20 is arranged inside the wheel body, a positioning sleeve 30 which can be vertically moved is arranged at the upper end inside the wheel frame, a universal wheel 40 is arranged at the lower end, a positioning component 50 is arranged at the combination part of the wheel frame and the positioning sleeve, and a spring 60 is arranged between the positioning sleeve and the top part inside the wheel body. The position of the universal wheel of the utility model can be vertically adjusted, to enable the universal wheel to be lowered down when the object arranged with caster wheels is required to be moved, and to be moved by rolling; when the object reaches the position, the universal wheel(s) can be collected, to enable the caster wheels not to be rotated, thereby fixing the object.

Description

Scalable universal caster wheel

Technical field

The utility model relates to and is contained in table leg bottom and desk is moved use caster wheel, can walk the scalable universal caster wheel that can fix after the withdrawal after particularly relating to a kind of stretching out.

Background technology

Castor is a kind of rolling walking device, and it is widely used on the objects such as case and bag, shopping cart, table, platform.Existing castor adopts cardan wheel mostly, the structure of tradition cardan wheel is known by people, they are stationary structure, be that traditional cardan wheel can only be done the two dimension rotation, and can not do the flexible and location of vertical direction, thereby when not needing the movement of objects of castor is housed, just can't make its stationary positioned, as long as therefore the external force effect is arranged, it is still removable, and this defective of traditional cardan wheel tends to make troubles to people's use.

Summary of the invention

The utility model is for addressing the above problem, and a kind of scalable universal caster wheel is provided, and the position of its cardan wheel can be adjusted up and down, cardan wheel can be put down when making the movement of objects position that needs castor will be housed, and promotes its walking of rolling; Then cardan wheel can be packed up after object puts in place, make castor not rotate and object is fixed.

Scalable universal caster wheel of the present utility model has one and table leg bonded assembly wheel body 10, wheel carrier 20 is housed in the wheel body, locating bush 30 moving up and down is equipped with in the upper end in the wheel carrier, cardan wheel 40 is equipped with in its lower end, positioning component 50 is equipped with in the joint portion of wheel carrier and locating bush, between locating bush and the wheel body inner top spring 60 is housed.

Wheel carrier 20 is a cylindrical body, and it is by the bigger epimere 21 of diameter and diameter is less and inwall is that the hypomere 22 of sphere constitutes, and its epimere sidewall is provided with a plurality of radial holes 211, and its bottom outlet diameter is less than the diameter of cardan wheel 40.

The locating bush 30 sidewalls outsides be provided with wheel carrier on radial hole 211 cooresponding positioning grooves 31.

Positioning component 50 comprises positioning bead 51, retainer spring 52 and positioning groove 31, wherein positioning bead and retainer spring are contained in the radial hole 211 on the wheel carrier 20, positioning groove is the sphere connected in star, and it is arranged at the sidewall outside of locating bush 30, and can form embedded location with positioning bead and cooperate.

Cardan wheel 40 is a global wheel.

Between locating bush 30 and cardan wheel 40, ball bearing of main shaft 70 is housed.

Good effect of the present utility model is, the fixed type connection structure that it will have castor now changes the telescoping structure into, make castor to adjust as required, particularly when the object that castor is housed is moved to the position that will park, its cardan wheel can be packed up, and the castor wheel body is contacted with ground, thereby make the object that castor is housed, can firmly be supported in ground as desk or case and bag etc., unless lift and move and can arbitrarily not move, thus use more reliable, simultaneously, as long as owing to when adjusting, lift or depress the object that castor is housed, thereby can finish adjustment quickly and easily.

Description of drawings

Fig. 1 is a cardan wheel collapsed state structural representation of the present utility model.

Fig. 2 is that cardan wheel of the present utility model stretches out the status architecture scheme drawing from the castor body.

Fig. 3 is each parts connection diagram of the utility model.

Fig. 4 is the wheel carrier structure schematic perspective view.

Fig. 5 is a locating bush structural upright scheme drawing.

The specific embodiment

Consult Fig. 1～3, scalable universal caster wheel of the present utility model comprises wheel body 10, wheel carrier 20, locating bush 30, cardan wheel 40, positioning component 50 and spring 60.Described wheel body 10 is the hollow shell of lower openings, and it can make the semielliptical shape, multiple shapes such as dish dress, and the bottom of table, platform leg is fixed at its top by bolt 11.The wheel body middle part is arranged with four and debugs the radially screw 12 that the joint screw is used, and also is provided with two axial joint pins 13 that are connected usefulness with wheel carrier 20 in the wheel body.By the middle and lower part wheel carrier 20 is housed in the wheel body, its structure as shown in Figure 4, this wheel carrier 20 is a cylinder-like body, it is by the bigger epimere 21 of diameter and diameter is less and inwall is that the hypomere 22 of sphere constitutes, its epimere is used for installing and locating cover 30, and hypomere then is used to install cardan wheel.Wheel carrier epimere sidewall and overhanging ring-shaped step are provided with four radial holes 211 that distribute by rotational symmetry, are used to install positioning component 50, and its bottom outlet diameter makes cardan wheel can not deviate from less than the diameter of cardan wheel 40.This wheel carrier is screwed on the joint pin 13 of wheel body.Locating bush 30 is housed in wheel carrier epimere 21, its profile as shown in Figure 5, the locating bush lower end places wheel carrier epimere 21 and hypomere 22 transition shoulder places, its bottom is the upper recess surface that matches with the cardan wheel sphere, the center is provided with the inner core 32 that fixing spring is used in the cover, the locating bush sidewall outside be provided with wheel carrier on radial hole 211 cooresponding sphere shape detents 31.This locating bush can move up and down in wheel carrier.Cardan wheel 40 is housed in wheel carrier hypomere 22, and this cardan wheel is a globoid, and the sphere shape inwall of it and wheel carrier matches.Ball bearing of main shaft 70 is housed, the friction drag when moving to reduce between the bottom surface of cardan wheel and locating bush.In four radial holes 211 on wheel carrier positioning component 50 is housed, this positioning component comprises positioning bead 51, retainer spring 52 and positioning groove 31, wherein positioning bead is a steel ball, it is contained in the joint portion of radial hole 211 interior wheel carriers and locating bush, at its rear portion retainer spring 52 is housed, radially in the screw 12 set screw 53 is housed four of wheel body middle part of being located at that communicate with radial hole, be used to regulate the elastic force of retainer spring, and regulate the friction force of positioning bead and positioning groove by regulating spring elastic force, to be applicable to various table, the platforms that vary in weight.Between locating bush and wheel body inner top spring 60 is housed, an end of this spring is connected in the wheel body top, and the other end is connected on the interior inner core 32 of locating bush.

Principle of work of the present utility model as shown in Figure 1 and Figure 2, wherein Fig. 1 shows the contraction state of cardan wheel, Fig. 2 then shows the state that stretches out of cardan wheel.Show as Fig. 2, when needs move the object (as table, platform) that this castor is housed, desk can be lifted, because the wheel body of castor is fixed in the table leg bottom, therefore wheel body and wheel carrier will be with moving on the desk, make spring 60 extend, locating bush 30 moves down under the spring force effect, with cardan wheel 40 by ejecting in the wheel carrier, positioning groove 31 on the locating bush is displaced downwardly to radial hole 211 places on the wheel carrier simultaneously, make positioning bead 51 head in the positioning groove, thereby make wheel carrier and locating bush relative fixed that this moment, castor was promptly rotatable.After movement of objects puts in place, can wheel body 10 be moved down to pressing down object top, push up back cardan wheel in the wheel carrier on ground, the jack-up that simultaneously locating bush made progress, positioning bead and positioning groove break away from, and spring 60 contractions, finally make cardan wheel be in contraction state.This moment, wheel body was supported in ground, thereby object such as desk can not be moved, and the contraction state of castor as shown in Figure 2.

Claims

1, a kind of scalable universal caster wheel, it is characterized in that, it has one and table leg bonded assembly wheel body (10), wheel carrier (20) is housed in the wheel body, locating bush moving up and down (30) is equipped with in the upper end in the wheel carrier, cardan wheel (40) is equipped with in its lower end, and positioning component (50) is equipped with in the joint portion of wheel carrier and locating bush, and spring (60) is housed between locating bush and the wheel body inner top.

2, scalable universal caster wheel according to claim 1, it is characterized in that, described wheel carrier (20) is a cylindrical body, it is by the bigger epimere of diameter (21) and diameter is less and inwall is hypomere (22) formation of sphere, its epimere sidewall is provided with a plurality of radial holes (211), and its bottom outlet diameter is less than the diameter of cardan wheel (40).

3, scalable universal caster wheel according to claim 1 is characterized in that, described locating bush (30) the sidewall outside be provided with wheel carrier on the cooresponding positioning groove of radial hole (211) (31).

4, scalable universal caster wheel according to claim 1, it is characterized in that, described positioning component (50) comprises positioning bead (51), retainer spring (52) and positioning groove (31), wherein positioning bead and retainer spring are contained in the radial hole (211) on the wheel carrier (20), positioning groove is the sphere connected in star, it is arranged at the sidewall outside of locating bush (30), and can form embedded location with positioning bead and cooperate.

5, scalable universal caster wheel according to claim 1 is characterized in that, described cardan wheel (40) is a global wheel.

6, scalable universal caster wheel according to claim 1 is characterized in that, between locating bush (30) and cardan wheel (40) ball bearing of main shaft (70) is housed.