DE102016210691A1 - caster - Google Patents

Abstract

The invention relates to a roller (38) with a running body (58) made of elastic material, which has a running surface (60). On the running body (58), a first projection (86) is formed, which engages in a first recess (74) formed on an outer ring (54) of the roller (38). As a result, wear / wear / detachment of the running body (58) is greatly reduced. The running body (58) can be embedded in a receiving groove (56) of an outer ring (54) of the roller (38). Side walls (62, 64) of the receiving groove (56) preferably terminate radially flush with the running body (58). Preferably, a second recess (76) is formed in the groove bottom (70), in which the running body (58) engages. The second recess (76) is preferably formed circumferentially in the outer ring (54) and extends parallel to the first recess (74). The roller (38) may be mirror-symmetrical to a center plane (42) which is perpendicular to the axis of rotation (44) of the roller (38).

Description

• a. Ein Wälzlager mit einem Innenring und einem Außenring;
• b. einen Kunststoff-aufweisenden Laufkörper am Außenring, wobei der Laufkörper eine umlaufende Lauffläche aufweist;

The invention relates to a roller for supporting a window or door leaf, in particular for a carriage of a window frame or door which can be placed on a fixed frame, wherein the roller has the following:

• a. A rolling bearing with an inner ring and an outer ring;
• b. a plastic-containing running body on the outer ring, wherein the running body has a circumferential tread;

The invention further relates to a carriage with at least one such roller. Furthermore, the invention relates to a window or a door with a fixed frame and a carriage assembly with such a carriage.

It is known to provide rollers for a carriage or a carriage assembly.

The EP 0 478 938 A1 discloses a pulley guide for an elevator sliding door. The roller guide has Rollenanhebeeinrichtungen at their end points on. The Rollenanhebeeinrichtungen have ramp pieces, can accumulate on the edge discs of rollers to relieve the elastic running surfaces of the rollers. In this way will be in the EP 0 478 938 A1 Flattening in the elastic treads avoided. An axial load of the rollers is in the EP 0 478 938 A1 not given.

From the EP 1 359 276 A2 has become known a fire-retardant, smoke-tight sliding door. The sliding door has several rollers. The rollers have a core of refractory material and on both sides of the tread a disc on which form a catching system after the melting caused by a fire of the tread to ensure a limp-home function. An axial load of the rollers is in the EP 1 359 276 A2 not discussed.

The EP 0 343 351 A1 discloses a roller for a furniture sliding door. The roller has an elastic running body with a running surface, which is embedded by a groove-shaped radial receptacle of the roller. The furniture sliding door can only be displaced in one plane so that there are no significant axial loads on the roller.

From the EP 0 703 338 A1 is known a roller for a sliding door. The roller has an outer ring which is laterally covered by annular flanges. The space between the outer ring and the flanges is filled with a running body of plastic material having a tread. Axial forces on the pulley are in the EP 0 703 338 A1 not discussed.

A problem with the known rollers is that the running body deforms at frequently occurring axial loads and can detach from the outer ring. The roller will no longer run round on a track and must be replaced. Axial loads on the tread occur especially in the case of adjustable wings. Such wings are usually tiltable and / or mounted parallel to a fixed frame.

Object of the present invention is therefore to provide a caster that is subject to significantly less wear by axial loads. Object of the present invention is also to provide a carriage with such a roller and a window or a door with such a carriage.

The object is achieved by a roller according to claim 1, a carriage according to claim 14 and a window or a door according to claim 15. The dependent claims indicate expedient developments.

The object of the invention is thus achieved by a roller for a carriage. The carriage is designed for arranging a wing on a fixed frame, wherein the wing is in particular switched off from the fixed frame. The roller has a rolling bearing with an inner ring and an outer ring. The roller has a plastic-containing running body on the outer ring, wherein the running body has a circumferential circumferential surface. Furthermore, a first projection is formed on the running body, which engages in a first recess which is formed on the outer ring.

By engaging in the first recess first projection, the connection of the running body on the outer ring is significantly improved and wear / tear / detachment greatly reduced. Preferably, the first recess extends at least in sections, in particular completely, in the radial direction. The first recess may alternatively or additionally engage behind the outer ring.

Preferably, the first recess is completely filled with the first projection. As a result, the running body adheres particularly firmly to the outer ring.

The production of the roller is significantly simplified if the recess is formed circumferentially on the outer ring. The recess can be made in this case by turning.

The outer ring may have a circumferentially formed on the outer ring receiving groove with side walls, wherein the running body is arranged in the receiving groove. The first recess is formed on the groove bottom of the receiving groove.

The running body is preferably axially on both sides of the side walls of the receiving groove. As a result, the running body is axially particularly reliable secured to the outer ring. Particularly preferably, the running body lies axially on both sides - except for projections of the running body - completely against the side walls of the receiving groove.

On the outer ring, a second recess is preferably formed, which is at least partially filled with a second projection of the running body. The second recess is axially spaced from the first recess. Preferably, the second recess is formed radially.

More preferably, the second recess is completely filled by the second projection of the running body. The running body is thus particularly securely attached to the outer ring.

The production of the roller is further simplified if the second recess in the form of a circumferential recess on the outer ring, in particular on the groove base of the receiving groove is formed.

The cross section of the tread is preferably arcuate, more preferably semicircular. There may be side sections between the tread and the sidewalls. The axial width of the side sections preferably corresponds to more than 25% of the cross-sectional radius of the tread.

As previously mentioned, the running body may have side portions between the tread and the sidewalls. The side sections preferably extend in the radial direction as far as the side walls of the receiving groove. In other words, the side portions preferably terminate radially with the side walls.

The wear of the running body is further minimized when the transition between the side walls and the groove bottom of the receiving groove is formed in a quarter-circle in cross-section.

In a further preferred embodiment of the roller of the groove base is seen from the tread from the axis of rotation of the roller out in cross-section arcuate. As a result, the running body as a whole has a substantially arcuate, uniformly loadable profile.

The object of the invention is further achieved by a carriage for supporting a settable wing, wherein the carriage has a roller described above.

The object of the invention is further achieved by a window or a door, wherein the window or the door has a fixed frame and a relative to the fixed frame movable wings, which is supported on a carriage assembly of the window or the door. The carriage assembly has a carriage described above. Preferably, the wing is adjustable from the fixed frame and designed to be displaceable parallel to the fixed frame.

Further features and advantages of the invention will become apparent from the following detailed description of an embodiment of the invention, from the claims and from the figures of the drawing, which shows essential to the invention details. The various features may be implemented individually for themselves or for a plurality of combinations in variants of the invention. The features shown in the drawing are shown such that the features of the invention can be made clearly visible.

Show it:

1 a plan view of a schematically illustrated window with a fixed frame, a movable relative to the fixed frame wings and a carriage assembly with two coupled carriages to support the wing;

2 a bottom view of a carriage 1 with two rollers; and

3 a cross-section of a roller 2 ,

1 shows a window 10 with a fixed frame 12 and one relative to the fixed frame 12 movable wings 14 , At the wing 14 is a handle 16 arranged. In a first grip position 18a is the window 10 closed and the wing 14 is firmly on the fixed frame 12 at. In a second grip position 18b is the wing 14 parallel from the fixed frame 12 Abstellbare and in the direction of an arrow 20 parallel to the fixed frame 12 displaceable. In a third grip position 18c is the wing 14 tiltable.

To move the grand piano 14 relative to the fixed frame 12 in the direction of the arrow 20 the wing is supported 14 at the bottom via a carriage arrangement 22 on a running track 24 of the window 10 from. The carriage arrangement 22 has at least two carriages 26 . 28 on that by a coupling rod 30 the carriage arrangement 22 are connected.

2 shows the carriage 26 according to 1 , Out 2 it can be seen that the carriage 26 a stay arm 32 having. The extension arm 32 is swiveled at one end on a carriage housing 34 arranged and has a camp at the other end 36 for connection to the wing 14 (please refer 1 ) on. In the carriage housing 34 are at least two rollers 38 . 40 rotatably arranged.

Is the arm 32 - as in 2 shown - from the carriage housing 34 turned off, is the wing 14 (please refer 1 ) parallel to the fixed frame 12 (please refer 1 ) displaceable. By parking or hiring the wing 14 / opening arm 32 become the rollers 38 . 40 heavily loaded axially. The present invention minimizes the wear of the rollers caused by said axial loads 38 . 40 ,

3 shows the roller 38 in cross section. The roller 38 is mirror-symmetrical to its radially extending center plane 42 educated. Furthermore, the roller 38 axially symmetric to the axis of rotation 44 the roller 38 educated. The roller 38 has a rolling bearing 46 , here in the form of a ball bearing, with several rolling elements 48 . 50 , here in the form of bullets. The rolling elements 48 . 50 are between an inner ring 52 and an outer ring 54 arranged.

The outer ring 54 is made of steel. The outer ring 54 has a receiving groove circumferentially 56 on. Into the receiving groove 56 is a running body 58 molded from plastic. The running body 58 consists of fiber-reinforced plastic, in particular glass fiber reinforced plastic. The running body 58 has thereby a certain elasticity, the smooth running of the roller 38 contributes, wherein the running body 58 nevertheless sufficiently resistant to wear. When turning the roller 38 supports the roller 38 over a tread 60 of the running body 58 on the track 24 (please refer 1 ). The tread 60 is arcuate in cross section to the center of the roller 38 trained.

The receiving groove 56 has side walls 62 . 64 on that the running body 58 axially, ie in one to the axis of rotation 44 parallel direction, limit on both sides. The side walls 62 . 64 contribute significantly to the axial stabilization of the running body 58 at.

The side walls 62 . 64 go through in cross-section of a quarter-circle shaped transitions 66 . 68 in a groove bottom 70 the receiving groove 56 above. The groove bottom 70 is radial, ie perpendicular to the axis of rotation 44 , arcuate to the center of the roller 38 trained. The running body 58 This is a total - as by a dashed line 72 in 3 indicated - arcuate design.

The groove bottom 70 points - as from the upper part of the 3 it can be seen - a first recess 74 and a second recess 76 on. The recesses 74 . 76 point radially to the axis of rotation 44 , The recesses 74 . 76 are completely through the barrel body 58 filled. By the intervention of the running body 58 in the recesses 74 . 76 be - in 3 by a double arrow 78 indicated - Ausdrehbewegungen the running body 58 effectively avoided in case of heavy axial load.

The recesses 74 . 76 are axially seen preferably between side sections 80 . 82 of the running body 58 intended. The side sections 80 . 82 extend between the side walls 62 . 64 and the tread 60 , as in 3 by dashed lines 84a - 84d is indicated. The side sections 80 . 82 extend radially as far as the side walls 62 . 64 from the axis of rotation 44 path. The side sections 80 . 82 each have a width B axially, which is more than 25% of the radius R of the tread 60 equivalent.

The running body has in an axially central portion, between the side portions 80 . 82 , a first advantage 86 on, in the first recess 74 engages and a second projection 88 in the second recess 76 engages, on.

Taking a synopsis of all figures of the drawing, the invention in summary relates to a roller 38 . 40 with a running body 58 made of elastic material, which has a tread 60 having. On the running body 58 is a first advantage 86 formed in a first recess 74 engages on an outer ring 54 the roller 38 . 40 is trained. This will wear / wear / detachment of the running body 58 greatly reduced. The running body 58 can in a receiving groove 56 an outer ring 54 the roller 38 . 40 be embedded. side walls 62 . 64 the receiving groove 56 preferably close radially flush with the running body 58 from. Preferably, in the groove bottom 70 a second recess 76 formed, in which the running body 58 intervenes. The second recess 76 is preferably circumferential in the outer ring 54 formed and runs parallel to the first recess 74 , The roller 38 . 40 can be mirror-symmetrical to its center plane 42 be formed perpendicular to the axis of rotation 44 the roller 38 . 40 runs.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0478938 A1 [0004, 0004, 0004]
• EP 1359276 A2 [0005, 0005]
• EP 0343351 A1 [0006]
• EP 0703338 A1 [0007, 0007]

Claims (15)

Roller ( 38 . 40 ) for supporting a wing ( 14 ) of a window ( 10 ) or a door, wherein the roller ( 38 . 40 ) Comprises: a. A rolling bearing ( 46 ) with an inner ring ( 52 ) and an outer ring ( 54 ); b. a plastic-containing running body ( 58 ) on the outer ring ( 54 ), wherein the running body ( 58 ) a circumferential tread ( 60 ) having; characterized in that on the outer ring ( 54 ) a first recess ( 74 ) is formed, which at least partially with a first projection ( 86 ) of the running body ( 58 ) is filled out. Castor according to Claim 1, in which the first recess ( 74 ) completely with the first projection ( 86 ) of the running body ( 58 ) is filled out. Castor according to claim 1 or 2, wherein the first recess ( 74 ) circumferentially on the outer ring ( 54 ) is trained. Castor according to one of the preceding claims, in which the first recess ( 74 ) extends at least in sections, in particular completely, in the radial direction. Castor according to one of the preceding claims, in which the roller ( 38 . 40 ) one circumferential on the outer ring ( 54 ) formed receiving groove ( 56 ), in which the running body ( 58 ), wherein the receiving groove side walls ( 62 . 64 ) and wherein the first recess ( 74 ) at the groove bottom ( 70 ) of the receiving groove ( 56 ) is arranged. Castor according to claim 5, wherein the running body ( 58 ) axially on both sides of the side walls ( 62 . 64 ) of the receiving groove ( 56 ) is present. Castor according to one of the preceding claims, in which on the outer ring ( 54 ) a second recess ( 76 ) is formed, which at least partially with a second projection ( 88 ) of the running body ( 58 ), wherein the second recess ( 76 ) axially to the first recess ( 74 ) is spaced. Castor according to claim 7, wherein the second recess ( 76 ) completely with the second projection of the running body ( 58 ) is filled out. Castor according to claim 7 or 8, wherein the second recess ( 76 ) circumferentially on the outer ring ( 54 ) is trained. Castor according to one of the preceding claims, in which the cross section of the tread ( 60 ) is arcuate and the running body ( 58 ) axially on both sides of the tread ( 60 ) extending side sections ( 80 . 82 ), in particular on the side walls ( 62 . 64 ), wherein the axial width (B) of the side sections ( 80 . 82 ) each more than 25% of the radius (R) of the cross section of the tread ( 60 ) corresponds. Castor according to one of the preceding claims in conjunction with claim 5, in which the running body ( 58 ) axially on both sides of the tread ( 60 ) extending side sections ( 80 . 82 ) which protrude radially equidistant as the side walls ( 62 . 64 ). Castor according to one of the preceding claims in conjunction with claim 5, in which the cross section of the transition ( 66 . 68 ) between the side walls ( 62 . 64 ) and the groove bottom ( 70 ) is formed in each case a quarter circle. Castor according to one of the preceding claims in conjunction with claim 5, in which the groove bottom ( 70 ) radially aligned with the tread ( 60 ) in cross-section arcuate to the center of the roller ( 38 . 40 ) is formed out. Carriage ( 26 . 28 ) for one, especially a fixed framework ( 12 ) storable wings ( 14 ) of a window ( 10 ) or a door with a roller ( 38 . 40 ) according to any one of the preceding claims. Window ( 10 ) or door with a fixed frame ( 12 ) and a carriage assembly ( 22 ), in particular from the fixed frame ( 12 ) and parallel to the fixed frame ( 12 ) displaceable, arrangement of a wing ( 14 ) of the window ( 10 ) or the door, the carriage arrangement ( 22 ) a carriage ( 26 . 28 ) according to claim 14.

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