CN87213330U - Large-sized plastic bearing - Google Patents

Abstract

The utility model relates to a large-sized plastic plane bearing, which is characterized in that the main parts of the bearing are totally made of plastic, and the characteristic also lies in that a locking ring is used to make the upper and the lower disks of the bearing not be separated. The utility model has the advantages of beautiful appearance, light weight, thin thickness, free rotating, convenient and simple manufacturing and assembling, and can be applied to the occasions of the articles which need a plane rotation in order to be used such as a dinning table with rotating top, a television, a displaying shelf, a tool rack, a card disk, toys, etc., and one object for multiple purpose can be realized.

Description

Large-sized plastic bearing

The utility model relates to a kind of large scale plastic surface bearing, can be used for lazy Susan and other multiple occasion that needs the plane rotation to use article.

At present the dining table bearing that uses is a raw material with steel or aluminum alloy, does not have the ball circle, and not only price is more expensive, and manufacturing process and assembling are complicated.

The plane bearing that uses is that upper and lower dish can separate at present.

Dining table bearing commonly used generally is to be fixed on the lower plane of desktop, can only a thing one usefulness, and owing to itself certain thickness being arranged, when it in company with lazy Susan on desktop pull down together when depositing, also occupy certain space.

The purpose of this utility model provides a kind of large scale plastic surface bearing that can overcome above-mentioned prior art shortcoming.This bearing is based on plastics, saving a large amount of metallic material, and bearing processing simplified, and cost reduces; This bearing adopts the collar parts, and upper lower burrs can not separated, and inner ball can not escaped.

The purpose of this utility model realizes by following improvement.This bearing is a kind of large scale plastic surface bearing, external diameter is 180～500 millimeters, comprise that having going up of raceway 19 and screw hole 27 coils 1, the raceway 11 and the lower wall 4 of groove 13 silently under the having that is used with last dish 1, ball 5, ball circle 3, it is characterized in that said going up also has the collar groove 20 of going up on the dish 1, also has collar groove 14 down on the said lower wall 4, and said bearing also comprises a collar 2, said collar 2 is divided into, in, following three parts, under the bearing rigging position, its top 23 partly or entirely embeds goes up in the collar groove 20, combine closely with last dish 1, middle part 24 external diameters are less than lower wall 4 internal diameters, bottom 22 external diameters are lower than following collar groove 14 groove faces on the lower wall 4 greater than lower wall 4 internal diameters and its upper surface, and the said dish 1 of going up, lower wall 4, ball circle 3 and collar 2 are to coil 1 by going up of plastics preparation, lower wall 4, ball circle 3 and collar 2 adopt the method preparation of shot moulding.Owing to used collar, dish and lower wall can not be separated in this bearing, therefore, the ball on raceway between the upper lower burrs just can not escaped.

The utility model has also been done some other improvement.Comprise and adopt accurate design, make between the upper lower burrs and rotate freely; With adopting the ball circle in the bearing, make between ball that relative position is fixed, ball needs quantity to reduce at large scale dining table of the present utility model, avoided as phase mutual friction and stressed un-reasonable phenomenon between the ball in the type dining table bearing entad; To the tighten up a screw improvement in hole of lower wall, make it both be suitable for using screw, also be suitable for using rubber silently.

By above improvement gained large scale plastic surface of the present utility model bearing, have the advantage of plastic article: easily processing, corrosion-resistant, in light weight, thin thickness, outward appearance U.S.; And upper lower burrs can not separated, ball can not escaped, and owing to the protection of the upper lower burrs that is linked up by collar, outside water, oil can not enter bearing inside makes the ball corrosion; Each plastic components any surface finish of this bearing according under the reasonable size that the utility model proposes, is rotated freely between the upper lower burrs; Because last dish can link with screw and wooden table top by screw hole, also available rubber silently need rotate the binding of use article with glass table top and other, bearing both can with fixedly logotype of desktop, also can not fixedly connected use, therefore accomplish one-object-many-purposes, as be used for the wooden lazy Susan that goes up desktop; Places such as the lazy Susan of desktop on glass, television set, display rack, tool rack, card tray, toy.

Below in conjunction with accompanying drawing embodiment of the present utility model is described, thereby further disclose the utility model, wherein:

Fig. 1 is the sectional arrangement drawing of large-sized plastic surface bearing of the present utility model;

Fig. 2 is the horizontal projection of ball circle 3.

Embodiment 1

Referring to Fig. 1, the lower wall 4 that the large scale plane bearing of present embodiment mainly comprises dish 1, be used with last dish 1, the ball on the raceway between the upper lower burrs 5, the following raceway 11 of raceway 19 and platform 16 and lower wall 4 on the last dish 1 and the ball circle 3 between the platform 9, and partly with on coil the collar 2 that bonds together, the use of this collar 2 can not separate upper and lower dish again.Wherein go up dish, lower wall, ball circle and collar and be ring.

Last dish 1 is made up of platform 15, platform 16, platform 17 and the platform 18 arranged according to this from outside to inside; More than the upper surface of dish 1 is a benchmark, and the height of each platform is followed successively by platform 15 from big to small and equals platform 17, platform 16 and platform 18; The section line that platform 17 and platform are 18 is the straight line that a upper end tilts inwards; Raceway 19 on platform 15 and 16 have, its internal diameter are slightly larger than the several silks of ball 5 external diameters; Collar groove 20 on having on the platform 17.

Lower wall 4 is made up of the following web 7 that is arranged in order from outside to inside, platform 8, platform 9 and platform 10; The following raceway 11 that cooperates with last raceway 19 is arranged between platform 8 and platform 9, and its position is relative with last raceway 11, and its internal diameter also equates with last raceway 11 internal diameters; In the inner part on the lower surface, there is following collar groove 14 platform 9 and 10 below.

Lower wall 4 must cooperate with last dish 1, can rotate freely with respect to lower wall 4 in order to guarantee dish 1, between each opposite planar of last dish 1 and lower wall 4 space is arranged all.Therefore, in the present embodiment, the inner edge of following web 7 and last dish 1 outer intermarginal, the inner edge of platform 9 and go up outer intermarginal, the platform 8 of dish 1 platform 17 and go up between dish 1 platform 15 table tops, between platform 9 and platform 16 table tops, between platform 10 and platform 17 outside table tops space is arranged all; Also have, the inner edge diameter of platform 10 must be greater than the external profile diameter of last collar groove 20, and the space height between platform 9 and platform 16 table tops also must be greater than the thickness of ball circle 3.

On the platform 18 of say dish 1, evenly be placed with screw hole 27 along a loop line; The feature of screw hole 27 of the present utility model is that its first half is a cylindrical hole, its internal diameter size and a kind of rubber silently external diameter of the first half cylindrical part of (as in this example silently 6) coincide, therefore, but this screw hole 27 both attachment screw use, also can cooperate rubber silently to use; The Lower Half of screw hole 27 is up-small and down-big frustoconic shape hole; The quantity of screw hole 27 can be 8-24, and 16 better.

Lower surface with said lower wall 4 is a benchmark, and the height of each platform order from big to small is to go up web 7, platform 9, platform 10 and platform 8 according to this on the lower wall 4; Following web 7 is higher to play the corrosion that the inner ball 5 of protection is not subjected to oil outer, water, the height of following web 7 is a little less than the upper surface of last dish 1, nearly outside evenly is placed with columniform silently groove 13 along a loop line on the lower surface of lower wall 4, its internal diameter matches in the footpath especially with 6 first half cylindrical portion silently, also equal upper half part internal diameter that dish 1 is tightened up a screw hole 27, silently the number of groove 13 can be 8-24, with 16 for well; Groove 21 is arranged on the table top of platform 9, and it is also passable not establish this groove.

For well, present embodiment is 360mm to the external diameter of lower wall 4 from 180-500mm.

Collar 2 is the circular article that a cross section is stepped shape, can be divided into top 23, middle part 24 and bottom 22.Its physical dimension must satisfy when bearing is in rigging position, the top 23 of collar 2 partly or entirely embeds goes up in the collar groove 20, combine closely with last dish 1, middle part 24 external diameters are less than lower wall 4 internal diameters, bottom 22 external diameters are greater than lower wall 4 internal diameters, and its upper surface is lower than following collar groove 14 groove faces on the lower wall 4, and when last dish 1 rotated with respect to lower wall 4, collar 2 can play the effect that lower wall 4 and last dish 1 can not be separated with respect to lower wall 4 rotations simultaneously neatly along with last dish 1 like this.

Collar 2 also can be made up of the arc section that several cross sections are aforesaid stepped shape, the quantity of arc section with length so that upper and lower dish can not separate is as the criterion.

Ball circle 3 is a ring thin slice, and its plane projection is referring to Fig. 2; Its thickness must be less than the space height of 16 on the platform 9 of upper and lower dish and platform; Its internal diameter less than upper and lower raceway inboard place diameter greater than platform 9 inboard place diameters; When on the platform 9 groove 21 being arranged, then also should be less than groove 21 inboard place diameters; In ball circle 3 outer side, along a loop line is evenly distributed ball hole 25 arranged, ball hole 25 is more than half cylindrical, its internal diameter is slightly larger than the several silks of ball 5 external diameters, its opening is in the outer ledge of ball circle 3, its center, hole just in time is on the vertical axis of upper and lower raceway, and for well, 16 better with 8-24 for ball hole 25.

Bearing of the present utility model, wherein go up dish 1, lower wall 4, collar 2 and ball circle 3 get through shot processing by plastics.Certain intensity, good, the on-deformable engineering plastics of wear resistance be can select for use,, wherein bearing usage requirement, price reached more cheaply for well with the ABS plastic performance as nylon 6, nylon 1010, polystyrene and ABS.

The bearing of present embodiment is when assembling, at first ball circle 3 is placed on second platform 9 and following raceway 11 of lower wall 4, ball 5 is placed down the ball hole 25 that is arranged in ball circle 3 on the raceway 11, close then and go up dish 1, make the top 23 of collar 2 partly or entirely embed in the last collar groove 20 of going up dish 1 then, by being applied to the glue in the collar groove 20 in advance, as 501 glue, make dish and collar bonding, thereby make, lower wall can't separate again, and then put into silently 6 first half cylindrical body in the baffle hole on the lower wall lower plane, bearing promptly assembles and forms.During use, bearing is lain against on the center portion of desktop under the lazy Susan, and then putting on the turntable desktop on the bearing.As needs bearing and last desktop are fixed, then must be in advance by last dish 1 screw hole 27 usefulness screws or with silently making it and last desktop links, and then be put in down on the desktop together with last desktop.

Large scale plastic surface bearing of the present utility model can bear 60 kilograms of left and right sides pressure, rotates access times and can reach ten thousand times.

Claims (4)

1, a kind of large scale plastic surface bearing, external diameter is 180～500 millimeters, comprise that having going up of raceway 19 and screw hole 27 coils 1, the raceway 11 and the lower wall 4 of groove 13 silently under the having that is used with last dish 1, ball 5, ball circle 3, it is characterized in that said going up also has the collar groove 20 of going up on the dish 1, also has collar groove 14 down on the said lower wall 4, and said bearing also comprises a collar 2, said collar 2 can be divided into, in, following three parts, under the bearing rigging position, its top 23 partly or entirely embeds goes up in the collar groove 20, combine closely with last dish 1, middle part 24 external diameters are less than lower wall 4 internal diameters, bottom 22 external diameters greater than lower wall 4 internal diameters but its upper surface be lower than following collar groove 14 groove faces on the lower wall 4, and the said dish 1 of going up, lower wall 4, ball circle 3 and collar 2 are to coil 1 by going up of plastics preparation, lower wall 4, ball circle 3 and collar 2.

2,, it is characterized in that said collar 2 can be whole ring object, also can be made up of several sections arc sections as the said bearing of claim 1.

3,, it is characterized in that the first half of the screw hole 27 on the dish 1 of saying is the cylindrical hole that internal diameter equates with lower wall 4 upper baffle grooves 13 internal diameters as claim 1 or 2 said bearings.

4,, it is characterized in that said ball 5 is 8～24 as claim 1 or 2 said bearings.

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