DE7210657U - PIVOT ROLLER - Google Patents

Description

pat attorney
Hans -Joachim kantner.,, _{0] 0}

PIfI OM-INQEN. E'JR 6 FRAN KFURT AM MAI N. DEN '- - * ^(L

QEORQ-VOIQT-STRASSF. 17 (IMMEDIATELY NEAR THE EXHIBITION AREA AND UNIVERSITY) PATHNTANWAlT Dl M INQ H. J. KANTNER. 'TE LEPH O N: (O * 11) - 77 46 0 «

WVT AM MAIN QIORQ-VOIf) T STRASSE 17 TELEQRAM: KANTNERPATENTE FRANKFURTMAiN

■■ - <■ -. ·, / IjZSSE

HEGcLS.-RATSE TELEPHONE:

company

Archibald Kenrick & Sons Limited

P.O. Box 9

w6St Sj? OIuwjLCj1, Gx ^ & föChäft ° ·

Swivel roll

The invention relates to castors for furniture and relates in particular to a caster of the type in which a caster wheel rotatable on a caster body is stored.

In some known casters, the castor wheel is made of plastic material, and the use of such Material enables the wheel itself to be shaped so that it has a surface that acts as a pivot bearing, which runs on a corresponding surface on the swivel roller body or on an axis carried by this is provided. With such swivel castors with plastic wheels

SAN i; - i '. NTO DKESff> rtftfe «r0; | M3 ÄVI ^^^ Äi ^AM MAIN NO. £ 80550 * cl'WÄllfc / ΝΐΖΖίΦνιϊρΖ-λΝ Κ FURT

however, there is a problem that they are often required to be chrome plated and that the only chrome plating which can be satisfactorily applied to plastic materials is unsuitable for those with; The surface of the hat that comes into contact with the ground is because it is not wear-resistant.

Furthermore, it is desirable that the overall width (overall width) of the caster body and caster wheel the swivel castor should be as small as possible; however, any reduction in this width is possible with swivel castors limited, in which the caster body has an axis on which the caster wheel is rotatably mounted.

The invention is based on the object of creating a swivel castor of the type described, in which under

no difficulties regarding wear-resistant chrome plating the load-bearing surfaces of the caster wheel also occur and despite a sufficiently low bearing load not only a simplified and more economical manufacture of the caster, but also a Can achieve a considerably more compact construction with a reduced overall width.

The invention is characterized in that with a swivel roller a caster wheel on a caster body by means of a slide bearing that is independent before assembly is rotatably arranged, which is provided by one in the caster wheel Recess is supported and a projection on the swivel roller body surrounds. According to a preferred development of the invention, the plain bearing can be inserted in the recess by means of a friction force Adhesive fit set and freely rotatable on the projection, but against axial movement relative to this

be held.

The invention is based on the knowledge that the use of an initially. That is, before the assembly of the individual parts the caster, independent slide bearing for the JJrenlagerung of the caster wheel on the caster body enables the caster wheel to be made of a different material can be formed as the plain bearing sleeve. In this way, if the plain bearing sleeve is made of plastic material is, as is preferred, although sintered metal can also be used, the caster wheel can be formed from metal and can therefore withstand the stresses caused by its surface coming into contact with the ground is exposed. The swivel roller body can also be made of metal.

The invention is applicable to both so-called pivotable swivel rails asweuubar, in which the Sct- ^ snkrcllenkcrper to a ™ fixed part, which is designed so that it is on a Piece of furniture fixed who can, is stored in such a way that it is can pivot relative to this fixed part or to the piece of furniture, as well as with so-called fixed roles which the roller body is designed so that it can be attached to any object, for example a piece of furniture, can be set.

The invention goes in principle but not exclusively With regard to and for use with and with furniture casters, the type in which the swivel castor body has been designed is mounted for pivoting about a vertical axis on a pivot pin which is designed so that it is attached to a piece of furniture can be set, and in which the axis of rotation of the caster wheel is inclined relative to the horizontal and the surface of the

Wheel with a suitable inclination to this axis is designed so that it rolls straight and smoothly on the ground, and is also arranged so that the lutten connection cLss 2z °; «su.gSiid.eii τ >> τ» ^ τ »AiiBenvuniHXiAsifOBttir With the center point of the same with the pivot axis, at least approximately, or the circumferential center line lies approximately coaxially with the pivot axis of the swivel roller body.

Another advantage achieved by the invention is that the total width of the caster body and Castor wheel can be reduced considerably compared to known castors of this type, whereby the visual-aesthetic appearance of the caster can be significantly improved.

Another advantage is that the assembly of Swivel castor body, plain bearing sleeve and swivel castor wheel can be carried out automatically with a saving in labor costs as a result.

The plastic material from which the plain bearing sleeve is formed can be, for example, nylon or polyacetal, as this is under the trade name "DKTiRTN" in the trade.

TJm ensure that the plain bearing sleeve is on the protrusion of the swivel roller body is held against axial movement, kcan According to a further preferred development of the invention, one of the front ends of the plain bearing is in contact at a molding on the outer end of the projection and the other end face of the plain bearing in contact with one Area of the swiveling tube body from which the projection extends away. Advantageously, the lead

anXornung is approximately radially at the outer end of the projection be outwardly extending circumferential flange through. Turning the / outer end of the Yorprunges is achieved, nacii-dein the plain bearing is applied to the projection.

According to a further inventive development, the swivel roller body can preferably have a practically concave shape with a protrusion of hollow design extending centrally from its inside and the caster wheel a approximately bowl-like shape with a hub extending centrally from its inside, which the receiving bore limited for the plain bearing and the projection of the swivel roller body, the outer peripheral surface of the approximately bowl-shaped caster wheel with the ground in Forms contact surface of the caster wheel and its free edge area the Eandbereich of the practical concave caster body overlaps on the outside so that the entry of foreign objects into the bearing of the Caster is prevented.

In the following, the invention is based on a preferred exemplary embodiment, which is shown in the drawing is described in more detail purely for example; Show:

Figure 1 is a view of a vertical section through a Furniture swivel castor according to the invention, and

FIG. Z shows a view from Eichtung H-II according to FIG. 1 with the caster wheel and sliding position X 'omitted.

The swivel roller shown in the drawings has a swivel roller body 1 made of metal, which with practical concave shape is formed and one upwards

protruding storage area 2 to accommodate a (not shown) has pivot pin, on which the swivel roller body "is .swiveled and which is so designed is that it fits into a corresponding hole in a piece of furniture. On the swivel roller body 1 are stiffening and Reinforcing ribs 3 are provided. On the swivel roller body 1, a hollow projection 4 is formed in one piece, which extends away centrally from its inside, the axis of this projection being inclined to the horizontal. On the projection 4 a plain bearing sleeve 5 made of suitable plastic material is rotatably mounted, which on the Projection between the area of the swivel roller body, from which it extends away, and one about radially outwardly extending circumferential flange 6 against Axial displacement is held relative to the projection 4, the flange 6 by folding over the outer end region of the projection 4 is formed * The folding over of the projection end in this way is after the application of the plain bearing sleeve causes on the projection 4, and Figure 2 shows the swivel roller body before the sliding bearing is applied is.

The swivel castor according to the invention also has a metal wheel 7, which has an approximately bowl-shaped Shaping is equipped and on which a hollow hub is integrally formed, which from the inside extends away centrally. When the caster is assembled, the central recess of this hub takes the Plain bearing sleeve 5 with Festsitζ caused by a fit with oversize, so that the caster wheel together with the Plain bearing sleeve is rotatable on the projection 4 of the swivel roller body.

It should be noted that the distance between the front end of the plain bearing sleeve 5 and the outer surface of the caster body 1 is relatively small, and this is precisely the reason that the total width of the caster body 1 and caster wheel 7 is considerably smaller than with conventional swivel castors of the type in question.

The outer circumferential wall 9 <ies caster wheel 7 has a suitable inclination to the wheel axis, so that a bearing surface for making contact with the one supporting the caster Floor is formed, which rolls or runs flat on the floor. The circumferential centerline of this surface has a practically aligned assignment to the axis of the bearing part 2. The outer sand 10 of the caster wheel is so ar -. ^ eorders that he the outer hand area 11 of the swivel roller body 1 overlaps from the outside in order to prevent adkkörern from entering the interior of the caster impede.

Palis desired, the caster wheel can be fitted with tires be provided, for example, from plastic material having suitable wear resistance properties, such as which is shown in dashed lines at 12 in FIG.

Claims (1)

Protection claimsclie 1.) swivel castor, thereby. Indicates that a Schwerucrollenraää (7) is rotatably arranged on a swivel roller body (1) by means of a slide bearing (5) that is independent before assembly. which is supported by a recess provided in the caster wheel (7) and surrounds a projection (4) on the caster body. 2.) caster according to claim 1, characterized «that the sliding bearing (5) fixed in the recess by means of fieibkraftffekt adhesive version and on the projection (4) freely rotatable, but is held against axial movement relative to this. Swivel castor according to Claim 1 or 2, characterized in that the sliding bearing (5) is made from plastic material and the swivel castor wheel (7) and swivel castor body (1) are made from metal. BANXK- 'NTO DRE PO5-T KiltfT AM MAIN NF. i3O55u «» »« / Zrankfurt 4.) caster according to one of the preceding claims, characterized in that the sliding bearing (5) dadurcli against axial movement relative to the projection (4) is held on this, that one of its front ends is in contact with a projection (6) at the outer end of the Yorsprunges (4) and its other front end are in contact with an area of the leg roller body (1) from which the projection (4) extends away. 5) swivel castor according to claim 4, characterized in that the molded projection is a circumferential flange (6) which extends approximately radially outward at the outer end of the projection (4) and which is achieved by folding over the outer end of the projection (4) after the slide bearing has been placed on the extension (4). 6.) caster according to one of the preceding claims, characterized in that the caster body (1) has a practically concave shape with a centrally extending from its inside projection (4) of hollow design and the caster wheel (7) has an approximately bowl-like shape with a from its inside centrally extending hub (8), which limits the receiving bore for the sliding bearing (5) and the projection (4) of the swivel roller body (1), and that the outer peripheral surface of the approximately bowl-shaped caster wheel (7) with the The base of the caster wheel (7) that comes into contact is formed and its free belt area (10) overlaps the belt area (11) of the practically concave caster body (1) on its outside in such a way that foreign bodies cannot enter the bearing of the caster. Patent attorney