CN2089887U

CN2089887U - Spherical universal castor

Info

Publication number: CN2089887U
Application number: CN 91201120
Authority: CN
Inventors: 韩方元
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-01-21
Filing date: 1991-01-21
Publication date: 1991-12-04

Abstract

The utility model relates to a spherical universal castor which is a universal wheel used for moving the object on the land, comprising a casing, a bearing, a rigid ball, etc. The spherical universal castor solves the problems of more components, complex manufacture, etc., of the existing universal castor. The utility model is characterized in that the lower part of the rigid ball is limited by a plurality of long suspension arms. Thereof, a series of castor structures are formed the spherical universal castor has the advantages of less components, material saving, easy fabrication, stable and reliable performance, etc. The utility model can be used for the equipment, the instruments, etc., of the refrigerator, the washing machine, the sofa, etc., which need to be moved. The spherical universal castor has stronger competitive power and big market demand.

Description

Spherical universal castor

The utility model is the spherical universal castor that is suitable for land mobile object.Present universal caster wheel, it is many to exist other parts, waste material, problems such as processing technology complexity.For example, since Chinese patent application number is 85203445 patent announcement, Patent Office of the People's Republic of China announce successively 30 surplus kind of universal caster wheel, characteristics total on the structure are the annular casing of the spacing employing enclosed shape in the bottom of rigid ball.Because four following aspects make this kind universal caster wheel exist the intensity surplus, waste material, problems such as processing technology complexity.When 1, using on ground, lateral load is very little, does not require the position limiting structure with very big strength and stiffness; 2, spacing for a rigid ball, the bearing on top can be thought a spacing point, lower part is as long as 3 can be realized spacing; 3, the blanking scheme of annular casing is circular, and stock utilization is low; 4, when making with steel plate, part is many in addition, and technology is complicated.Though, number be 88206761.3 disclosed universal caster wheels by Chinese patent application, the spacing scheme of multiple spot has been adopted in its lower end, as the little flap that stretches out (or being called short cantilever), and it is just technical the considering a problem of closing up, thereby does not address the above problem.In addition, present universal caster wheel also exists problems such as load-carrying capacity is low, stop is inconvenient, vibration is big, elasticity is little.

The utility model has solved the problems referred to above.Its objective is few, the economical with materials of a kind of parts of design, easy to process and/or stop is more convenient, load-carrying capacity is high, vibration is little, be convenient to the universal caster wheel of balance.

The utility model design-calculated universal caster wheel is made up of mount pad, bearing seat, bearing, rigid ball, bottom inhibiting device etc.The bottom inhibiting device has changed existing loop configuration, has adopted long cantilever structure (in order to distinguish mutually with aforesaid short cantilever, using long cantilever one speech), severally extends the week that the long cantilever that gets off is distributed in rigid ball by top.The upper end of long cantilever can be made of one, and also can make or links into an integrated entity with other parts (as bearing seat).Thereby realized spacing to rigid ball.This structure has not only been saved raw MAT'L, has simplified technology and has brought convenience for unit design.

Long cantilever shape structure can be made various ways.For example, curved, curved bar shape or curvilinear figure.That the shape of curved surface can be is trapezoidal, rectangle or triangle.Also can be comparatively complicated shape.The quantity of long cantilever can be two to a plurality of, preferably adopts two, three or four.During with two long cantilevers, jib foot is wanted broad.Long cantilever is in the rigid ball distribution in one week, can be uniform or distribute by certain rule.Preferably uniform or be symmetrical in a certain straight line or plane.

The material that long cantilever is used can be sheet metal, metal wire rod, plastics or composite material.Bearing seat, mount pad, long cantilever can use same type of material, also can use the inhomogeneity material.Rigid ball can with mould firmly, metal or hard rubber make.

When making long cantilever with metal sheet, long cantilever adopts curved.The side expansion shape of long cantilever can be rectangle, triangle, trapezoidal or flap shape.Lower end for ease of closing in, long cantilever is narrower.Can be with two, three or four long cantilevers.Long cantilever can fuse on own top, during blanking, on one point along directions of rays otch (three or four), after the punching press, forms a cantilever between two adjacent rays, and top is annular, is assembled together with bearing seat.Mount pad can be made of one with bearing seat.Long cantilever preferably is made of one with bearing seat.Its blanking shape can be criss-cross, Y shape, and H or how petal is preferably triangle.Mount pad can be with traditional mode, as, screw, board-like, sleeve-type etc.The structure that preferably adopts same bearing seat, long cantilever to be made of one.Mount pad can have two or three lugs.This structure, parts are minimum, process very convenient.And oneself height reduction by 10%～20%, improved load-carrying capacity and assembling.

When doing long cantilever with plastics, bearing seat, mount pad and long cantilever also can be made of one, and close up in the bottom.But preferably adopt split-type structural.Three or four uniform long cantilevers are made of one in the top, and long cantilever is preferably rod.Bearing seat is made of one with mount pad.The bearing seat that is made of one with mount pad links together with long cantilever, finishes fitting work.Connecting mode can splicing, hot pressing, screw thread, snap-fastener or welding, preferably glueds joint or snap-fastener.Connect with snap-fastener, be convenient to assembling and maintenance.Adopt plastics to make long cantilever, compare, have material and concentrate rigidity height, the advantage that intensity is big with existing plastics universal caster wheel.

When doing long cantilever with metal wool, bearing seat links into an integrated entity with the metal wool cantilever.Coupling method preferably adopts welding.Metal wool can be with sub-thread or bifilar side by side.Metal wool can be made three or four and be distributed on one week of rigid ball.Metal wool also can be made the week that two or three U-shapeds (or V-arrangement) are distributed on rigid ball.Bearing seat can be made of one with mount pad.Though this structure has increased one procedure, profile is more attractive in appearance, more material-saving.Can be described as topless formula universal caster wheel.

Bearing of the present utility model can be a plain bearing, also can be antifriction-bearing box.

When using plain bearing, the bearing seat of plastics can directly be made with antifriction and low-friction material.During with the steel structure bearing seat, the bearing seat bottom can increase the mat of an antifriction and low-frictional force.This method of filling up available embedding, splicing, spraying is connected on the bearing seat.

When using antifriction-bearing box, pit can be directly designed in the supporting of ball on bearing seat.Pit cooperates with ball.Ball should be tried one's best greatly, to improve service life.This relatively simple for structure, but, have unbalance stress for the metal shaft bearing, vibrate big shortcoming.So can under bearing seat, design one the carrier ring that cooperates pit is arranged.This encircles available low-frictional force and antifriction material is made, plastics etc. for example, and carrier ring can glued joint or be embedded on the bearing seat.

For the balance that guarantees four pin when supporting support with the vibration when reducing to move, the utility model has elastic component on the top of bearing seat and the bottom design of mount pad.As spring plate, diaphragm capsule, coil spring etc.Preferably use coil spring.

In order to lock universal caster wheel, can in the middle of bearing seat, design a stop screw rod and knob.When screw rod is descending, withstand rigid ball.Rigid ball breaks away from bearing.Thereby realization stop.Again because rigid ball has certain action radius, so can realize highly fine setting.

For the sharp angle clamping stagnation of the lower end that prevents cantilever or damage rigid ball, the inboard design in the lower end of cantilever has fillet.

Below in conjunction with accompanying drawing, introduce three most preferred embodiments of the present utility model respectively.

Figure one, figure two are first embodiment, and figure one is a front view, and figure two is a left view.

Mount pad (1), bearing seat (2), long cantilever (3), be made of one with steel plate.Long cantilever is four (also can regard the correction form of two long cantilevers as), and pit (6) is arranged on the bearing seat.Rigid ball (4) is made with moulding firmly.Close up in ball and the rigid ball back of packing into.This programme only need be processed two parts in addition, has simplified technology.Assembling highly reduces 10%～20%, has improved load-carrying capacity.In this embodiment, with the ball cancellation, replace the antifriction ring, then can form the plain bearing scheme.

Figure three is second embodiment.Shell is made with plastics.The same bearing seat of mount pad (1) (2) is made of one, and its downside has the same ball of several pits (5) to cooperate.Four long cantilevers (3) are distributed on a week of rigid ball (4), and the long cantilever upper end is made of one.Rigid ball is made with moulding firmly.Bearing seat is glued together with cantilever.In this scheme, if cancellation ball (5) then can form the scheme of plain bearing.The characteristics of second embodiment are to need equipment few, and are easy to assembly, are convenient to maintenance, vibrate for a short time, and noise is low.

Figure four is the 3rd embodiment.The same bearing seat of long cantilever (3) (2) is made of one, and cantilever has three, is distributed on a week of rigid ball (4).A coil spring (6) is arranged between bearing seat and the mount pad (1).The characteristics of this scheme are, vibrate for a short time, and capacity of self-regulation is arranged, and spring guide piece not.

The utility model has purposes very widely.It can be used for equipment that sofa, laundry machine, electric refrigerator or various needs move, instrument etc.

In a word, the utility model has reduced parts aspect cost, saved raw MAT'L; Aspect processing, reduced operation, become shallow calendering and bending by deep rolling, reduced cost of equipment; At aspect of performance, highly reduce by 10%～20%, improved load-carrying capacity and assembly performance, reduce vibration and noise, and be convenient to maintenance.The utility model extensive market, competitive, favorable economic benefit and social benefit are arranged.

Claims

1, a kind of spherical universal castor that is suitable for land mobile object, by mount pad (1), bearing seat (2), compositions such as bearing, rigid ball (4) and bottom inhibiting device is characterized in that, described bottom inhibiting device is a long cantilever shape structure, and several long cantilevers (3) are distributed in a week of rigid ball;

By the described universal caster wheel of claim 1, it is characterized in that 2, described long cantilever is a curved;

By the described universal caster wheel of claim 1, it is characterized in that 3, described long cantilever is a curved bar shape;

By the described universal caster wheel of claim 1, it is characterized in that 4, described long cantilever is made of one with bearing seat;

5, by claim 1 and the described universal caster wheel of claim 4, it is characterized in that described mount pad is made of one with long cantilever and bearing seat;

By the described universal caster wheel of claim 1, it is characterized in that 6, described mount pad is made of one with bearing seat.

By claim 1 and the described universal caster wheel of claim 6, it is characterized in that 7, described long cantilever upper end is made of one, and links together with bearing seat.

By the described universal caster wheel of claim 1, it is characterized in that 8, described long cantilever is made by metal wire rod.

9, by the described universal caster wheel of claim 1, it is characterized in that, have elastic component in the middle of described mount pad and the bearing seat.

10, by the described universal caster wheel of claim 1, it is characterized in that the stop screw rod and the knob that screw thread are arranged in the middle of the described bearing seat and cooperate with it.

11,, it is characterized in that connecting under the described bearing seat support pads that an antifriction material is made by the described universal caster wheel of claim 1.