CN2040450U

CN2040450U - Castor without axle

Info

Publication number: CN2040450U
Application number: CN 88214749
Authority: CN
Inventors: 陆斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-10-08
Filing date: 1988-10-08
Publication date: 1989-07-05

Abstract

The utility model discloses a castor without an axle. A spherical rolling wheel without an axle hole is positioned just under a rolling wheel seat, and movable rolling balls are arranged between the rolling wheel and the rolling wheel seat. The rolling wheel seat is provided with a return passage of the movable rolling balls and a limit sleeve used for limiting the spherical rolling wheel. Compared with eccentric dual-axle castors generally used at home and abroad at present, the castor without an axle has simple structure, no eccentric force moment, large load bearing, small volume and flexible starting.

Description

Castor without axle

The utility model is about cardan wheel, particularly a kind of cardan wheel that does not have axle.

A lot of high-grade furnitures, equipment, take little cardan wheel all be housed at the end of instrument etc.Cardan wheel form both domestic and external is a lot, as roller sphere is arranged, disc; Bearing has roller, sliding type, radial bearing, various ways such as thrust bearing; The mounting means of axle and the manufacturing process kind of wheel carrier are also a lot.But the horizontal shaft that their basic structure all is roller to install around on turning rolls rotates, and has one to sit with horizontal shaft accentric vertical axis and cardan wheel and to link to each other and make the turning rolls conversion direction on the turning rolls.The shortcoming of this structure is: loading is taken the big moment of flexure of formation at vertical eccentric shaft and cardan wheel, and its load-carrying capacity is reduced, and the wheel seat damages easily, and particularly the cardan wheel in the case goods often comes off.Starting was difficult when several cardan wheel inceptive directions were inconsistent.And complex structure, the cost height.

The purpose of this utility model provides a kind of do not have rotary shaft and eccentric moment, and carrying is big, novel universal wheel simple in structure.

The purpose of this utility model is achieved in that (see figure 1) roller 1 for spherical, and the load that roller is sat on 5 is pressed to roller 1 through the ball 4 that moves about.The ball that moves about is positioned at roller and sits 5 spherical groove, and the groove outmost turns is the ball backflash, and it is bigger with the gap of roller 1, and ball does not bear the pressure of wheel seat in backflash, but under the pushing of middle part pressurized ball, refluxes from the trend vacancy.Stop collar 2 makes roller below and the left and right sides spacing and can not deviate from.

The utility model has the advantages that: do not have axis of revolution, simple in structure, cost is low, and is not fragile.The roller counter-force is sat the middle part by wheel, and carrying is big, and the attaching parts that wheel is sat is stressed little, difficult drop-off.

Concrete structure of the present utility model is provided by following examples and accompanying drawing:

Structure example 1 is as shown in Figure 1: roller 1 usefulness chromium plating or zinc-plated steel ball, or use material such as non-metals, duroplasts, it can be solid or hollow.Stop collar 2 can be processed appearance chromium plating with steel, sits 5 with screw thread and roller and is connected, and also can make of slightly elastomeric translucent plastic, and then profile more is rich in sense of the times.Roller is sat the processing of 5 usefulness steel, and the top has the installation screw rod, sits when installing in the hole end of to, can utilize nut to regulate height, therefore is applicable to electric refrigerator, laundry machine and other requirement steadily adjustable equipment that lands.

Structure embodiment 2 is as shown in Figure 2: stop collar 2 has groove with the contact position of roller 1, and groove is embedded with seal ring 7.The roller side of taking rivets or welds an adapter plate 6, and this structure is applicable to wooden furnitures such as sofa.

Structure embodiment 3 is as shown in Figure 3: roller is sat 5 and use the plastics extrusion moulding, embeds the spherical crown 8 with metal stamping one-tenth during extrusion molding.

Meet structure embodiment 4 as Fig. 4: roller is sat 5 tops and is made the conical surface and can directly insert in the pin of sitting at the end 9, also can make to be threaded in the pin 9.

Claims

1, a kind of by roller, roller is sat, and the no axle cardan wheel that ball etc. are formed is characterized in that: the spherical roller of no axis hole is positioned under the roller seat; The ball that moves about is housed between the two.Roller is taken the return flow line that is provided with the ball that moves about.The roller stop collar is equipped with in the roller side of sitting down.

2, by the described cardan wheel of claim 1, it is characterized in that: seal ring is equipped with in the contact position of stop collar and roller.