EP0546535A1 - Roller body for paint roller - Google Patents

Abstract

A roller body for a paint roller is proposed, which consists of a tubular body (2) for receiving a roller covering consisting of plush, hide or foam or the like, and a paint roller clip (4) is held within the tubular body (2) by means of a clamping sleeve (6). In order to permit a variable position of the clamping sleeve (6) within the tubular body (4), at least two detent webs (8, 9) are provided into which the clamping sleeve (6) can optionally be clipped. In this arrangement, the outer position is used with a roller covering of foam and the inner position with a roller covering of plush or the like, the inner position including space for an additional plug (24) for knocking in the plush. <IMAGE>

Description

State of the art:

From DE 37 14 415 A1 a roller body for a paint roller has become known, which consists of a tubular base body in which a freely rotatable clamping sleeve for a paint roller bracket is arranged by means of a snap connection. For this purpose, the tubular body has a ring-shaped, radial constrictions formed as a latching web, which engages in correspondingly adapted circumferential recesses formed as latching grooves on the circumference of the clamping sleeve. The snap connection accordingly forms a kind of circumferential tongue and groove connection between the tubular body and the clamping sleeve. The clamping sleeve has a certain length in order to form a certain guide within the tubular body for the paint roller bracket. In this known roller body, the locking web arranged in the tubular body is located in the radial central plane of symmetry of the tubular body, so that the likewise symmetrically designed clamping sleeve can be inserted into the interior of the tube from both sides. In this case, a side part to be inserted laterally or the closure cap is used to produce the snap connection. The side parts or caps have in particular the task of bracing the ends of a roller body provided with plush in the interior of the tube. Such a paint roller therefore consists of at least three parts, i. H. Base body or tubular body, clamping sleeve and at least one sealing cap. The additional sealing cap can be dispensed with if the plush cover is sewn on one side.

In addition to the paint rollers with a plush cover, those with a foam cover (moltoprene or the like) have also become known. Since there is no plush to be knocked in, the side parts or end caps do not need to be designed accordingly. One end of the roller body is generally completely closed by the foam covering. The other end must be kept open for the introduction of the paint roller bracket. The sealing cap to be inserted on this side then serves to prevent the entry of colored liquid into the interior of the tubular body.

In a construction according to FIG. 3 of the above-mentioned DE 37 14 415 A1 with a foam covering, one could do without the closure cap or the side part if the penetration of paint into the interior of the tube is not very disturbing. In this case, the roller body would only consist of two parts, namely the tubular body and the clamping sleeve.

Object of the invention:

The invention has for its object to improve known roller bodies to the effect that universal use is made possible irrespective of the use of plush covers or foam covers. The arrangement between the tubular body and clamping sleeve, d. H. In particular, the snap connection can be designed such that a largely automatic assembly is also possible in a simplified manner. In particular, the roller body should also be able to use only two parts, namely the tubular body and the clamping sleeve, when equipped with a foam coating.

Solution of the task:

This object is achieved on the basis of a roller body according to the preamble of claim 1 by the characterizing features of claim 1.

In the subclaims, advantageous and expedient developments of the roller body specified in the main claim are possible.

Advantages of the invention:

The roller body according to the invention has the advantage over the known inventions that it is very easily suitable both for use with a plush cover and with a foam cover. In this case, in the case of a plush cover, a closure cap is generally required at least on the side of the entry of the paint roller hanger, which serves to brace the plush end that has been turned in. However, the introduction of the end cap means that the clamping sleeve must be so far inside the tube that the closure cap can still be inserted without problems. A corresponding grid or snap connection must be arranged at the appropriate location within the tubular body. If you now want to provide the same roller body for equipping with a foam coating, the end cap can be omitted because no plush end has to be hammered into the interior of the tube. With the same arrangement of the clamping sleeve as described above, however, the space left free by the missing end plug would be filled by color fluid entering the pipe interior, which has a disruptive effect on the use of the paint roller.

According to the invention, it is therefore additionally provided that the clamping sleeve for this application can be arranged in a second latching position inside the tube, which in this way is that the clamping sleeve forms an end closure for the tube interior. This closure is brought about by a simple end collar on the clamping sleeve.

The clamping sleeve can therefore be introduced according to the invention in two different latching positions within the tube body, which differ depending on the equipment of the paint roller with a plush cover or a foam cover.

The length of the clamping sleeve rotating within the tubular body is such that it is supported within the tubular body without tilting. The end collar of the clamping sleeve can be provided for closing the tubular body opening and / or an additional, opposite bearing collar for guiding the clamping sleeve.

The end-side bearing collar pointing at the clamping sleeve into the inside of the pipe should not act as an obstacle in the region of the latching webs when the clamping sleeve is inserted into the inside of the pipe. It is therefore adapted in its outer diameter to the constriction formed by the latching webs in order to nevertheless ensure good guidance within the tubular body, the inner diameter of the tubular body in the region of this bearing collar is adapted to this with corresponding play. As a result, the clamping sleeve can be inserted and locked in without any problems up to the latching connection, without the bearing effect of the bearing collar being impaired.

It is also advantageous that the tubular body is symmetrical with respect to its radial center plane, i. H. there are two locking lugs on the left and right of the center of symmetry for the possibility of receiving the clamping sleeve on both sides in the tubular body.

This simplifies automatic assembly of such parts. The symmetrical design of the tubular body also enables problem-free use of roller bodies of different lengths. The clamping sleeve can be inserted and locked into the tubular body from both sides.

Drawing:

• Fig. 1 einen Walzenkörper für einen Farbroller mit einem Schaumstoffüberzug,
• Fig. 2 den gleichen Farbroller mit einem Plüschüberzug,
• Fig. 3 einen Farbroller gemäß Fig. 2 in verlängerter Ausführung,
• Fig. 4 den Rohrkörper schematisch nach einem der Fig. 1 - 3,
• Fig. 5 die Einzelheiten X aus Fig. 4
• Fig. 6 die Einzelheit Y aus Fig. 5 und
• Fig. 7 die Klemmhülse aus den Fig. 1 - 3.

Advantageous and expedient embodiments of the invention are shown in the drawing and explained in more detail in the following description. Show it

• 1 shows a roller body for a paint roller with a foam coating,
• 2 the same paint roller with a plush cover,
• 3 shows a paint roller according to FIG. 2 in an extended version,
• 4 shows the tubular body schematically according to one of FIGS. 1-3,
• 5 shows the details X from FIG. 4
• Fig. 6 shows the detail Y of Fig. 5 and
• 7 the clamping sleeve from FIGS. 1-3.

Description of the embodiment:

The paint roller 1 shown in FIGS. 1-3 consists of a tubular base body or tubular body 2 for receiving a roller cover 3, which is shown in FIG. 1 as a foam cover 3a (moltoprene cover) and in FIGS. 2, 3 as a plush cover 3b or is made of fur or the like. Of course, the tubular base body 2 can also consist of a double-walled tube, as shown in DE 37 14 413.

The paint roller 1 also consists of a paint roller bracket 4, the bent leg 5 of which extends into the tubular body 2. The paint roller bracket is supported by means of a bearing bush or clamping sleeve 6, which is also referred to as an adhesive sleeve. The radial center plane 7 of the tubular body 2 is designed as a plane of symmetry, i. H. the parts on the left and right of this are mirror-symmetrical.

In Fig. 4 the tubular body 2 is shown schematically with the detail X. This detail X is shown in FIG. 5 in an enlarged representation.

To produce a snap connection between the tubular body 2 and the clamping sleeve 6, the tubular body has, on the left and on the right of the center of symmetry plane 7, two locking webs 8, 9 or 8 ', 9' forming radial constrictions, which are shown in FIGS. 5 are shown. The locking webs 8, 9 represent a circumferential narrowing in the tubular body 2, the inner tube diameter di being reduced to the inner diameter d ₂ . The longitudinal axis of symmetry is designated by reference number 10.

The arrangement of the locking webs 8, 9 within the tubular body 2 are matched to the different possible positions of the clamping sleeve 6 within the tubular body 2. The tubular body 2 has an overall length L ₁ and an outer diameter D ₁ .

As can be seen from FIGS. 1-3 and 7, the clamping sleeve 6 consists of an elongated tube provided with a longitudinal slot 36, with the values such as length L ₂ , the outer diameter D ₂ and the inner diameter d being constant for all exemplary embodiments _3rd The inner diameter d _{3 of} the sleeve is adapted to the outer diameter D _{3 of} the leg 5 of the paint roller bracket 4, so that it is held in a force-locking manner.

At the left end of the longitudinally slotted clamping sleeve 6 there is an annular closure collar 11, which is closed toward the end face 17 or opening side 12 and has an outside diameter D ₄ , which largely corresponds to the inside diameter d _{i of} the tubular body 2 or the narrowing diameter d _{2 of} the locking webs 8, 9 corresponds. As shown in FIGS. 1 and 7, the circumferential collar 11 closes the opening 12 (see FIG. 5) of the tubular body 2 with the aid of a remaining, very thin, flexible web 35.

The clamping sleeve 6 furthermore has two radial projections 13, 14 lying next to one another with an outer diameter D ₅ , which are arranged at an axial distance 1 from each other and form a circumferential locking groove 15, the center line 16 of which is at a distance 1 ₂ from the front edge 17 the clamping sleeve 6 is removed. This length 1 _{2 also} corresponds to the distance of the first locking web 8 in the tubular body 2 from the associated opening 12, so that the locking web 8 in the locking groove 15 as shown in Fig. 1 or the superimposed representation in Fig. 5, 7 as Snap connection can snap into place. For this purpose, the clamping sleeve 6 is inserted into the tubular body 2 through the opening 12. So that the radial projections 13, 14 can slide over the latching web 8, the clamping sleeve 6 is longitudinally slotted over its entire length except for the flexible, thin web 35 (longitudinal slot 36), so that it can be reduced in diameter by compression. Furthermore, the front radial projection 14 has a run-on bevel 18 with an angle ai, which makes it easier to slide over the locking web 8.

This results in a positive engagement of the locking web 8 in the locking groove 15, as shown in Fig. 1.

The clamping sleeve 4 has at its other end a further circumferential collar 19 with an outer diameter D ₆ , which is dimensioned the same or slightly smaller than that which is dimensioned the same or slightly smaller than the inner diameter d _{2 of} the locking web 8 or 9 The bearing collar 19 does not hinder the insertion of the clamping sleeve 6 before the snap connection is made. The bearing collar 19 serves to better guide the sleeve 6 within the tubular body 2. For this purpose, the inside diameter d _{4 of} the tubular body 2 is reduced again compared to the inside diameter di or the constriction diameter d ₂ , which is done via the bevel 20 with the angle a ₂ . This run-up slope 20 is arranged in a length 1 ₃ away from the opening 12 of the tubular body 2. The inner diameter d ₄ in the tubular body 2 largely corresponds to the outer diameter D _{6 of} the bearing collar 19 of the clamping sleeve 6, so that the clamping sleeve is also guided over the bearing collar 19 within the tubular body 2. This arrangement is shown in Fig. 1. According to the embodiment of the paint roller according to FIG. 1, the clamping sleeve 6 is thus inserted into the tubular body 2 via the opening 12 until the locking groove 15 formed by the locking webs 8, 9 forms a snap connection with the first locking web 8. In this position, the end collar 11 forms an annular closure of the tubular body 2 with the remaining thin web 35, so that the interior of the tubular body 21 is closed to the outside when the paint roller bracket 4, 5 is inserted and no paint can penetrate into the interior of the tube 21. The other end 22 of the tubular body 2 is covered by the roller cover 3 a made of foam according to the dashed line 23.

Except for the longitudinal slot 36 and the remaining “remaining web” 35, the clamping sleeve 6 is formed symmetrically to the longitudinal axis 37.

2 shows the alternative arrangement of the clamping sleeve 6 within the tubular body 2. This is a paint roller with a roller cover 3b made of plush or fur or the like, which requires the ends to be hammered in. Additional plugs 24, 25, which also consist of a longitudinally slotted tubular body, are required to drive in the ends. The longitudinal slits of the clamping sleeve 6 and the plugs 24, 25 are highlighted in FIG. 1 and FIG. 2 by black identification. So that space is created for the left-hand plug 24 in FIG. 2, the clamping sleeve 6 must be displaced further inside the tubular body 2. For this purpose, the further locking web 9 provided in the tubular body 2 is provided, which also interacts with the locking groove 15 in an analogous manner to that described in FIG. 1 and forms the snap connection. The bearing collar 19 moves so far to the right that it still comes to lie in the diameter range with the reduced diameter d ₄ . The length 1 ₄ of the extended tube part beyond the locking groove 15 up to the bearing collar 19 must therefore be dimensioned such that with symmetrical design of the tubular body 2 around the symmetry center plane 7 of the bearing collar 19 comes to the side of the run-up slope 20, 20 '. This ensures that the bearing collar 19 is guided over the diameter range d ₄ within the tubular body 2.

The distance 1 _{5 of} the second locking web 9 from the front edge 12 is dimensioned such that the length 1 _{6 of} the plug 24 is still behind the end collar 11 of the clamping sleeve 6 according to the arrangement of FIG. 2. The length 1 _{6 of} the stopper 24 can be designed such that the clamping sleeve 6 is hereby in the second latching position can be brought.

The stopper 24, like the stopper 25, in turn has a locking groove 26, 26 ', which results in a corresponding snap connection with the locking web 8, 8'.

The surface of the plugs 24, 25 is made groove-like 33 or thread-like in order to provide a good hold for the folded plush. The end of the plug 24 is in turn formed as a collar 27 with a diameter D ₇ , which corresponds to the outer diameter D _{1 of} the tubular body. A corresponding passage opening 31 is provided for the paint roller bracket 4. In contrast, the plug 25 is provided with a cover closure 28, the outer diameter D _{8 of which} largely corresponds to the inner diameter di of the tubular body 2. Of course, the folded plush must still have space between these parts.

The embodiment of the invention according to FIG. 2 differs from that according to FIG. 1 in that instead of the foam casing 3a, a plush casing 3b is provided, which makes it necessary to wrap the plush over both or at least the plug 24. For this purpose, the locking groove 15 of the clamping sleeve 6 is not brought into engagement with the first locking web 8 as in FIG. 1, but with the second locking web 9 according to FIG. 2, so that the plug 24 can also be introduced into the tubular body 2. The other end 22 of the tubular body 2 in FIG. 2 can be closed either by sewing the plush or also by driving in the plush by means of the plug 25.

With the same tubular body 2 and the same clamping sleeve 6, different applications can therefore be made possible with different roll covers, the additional plugs being necessary in the case of plush-shaped roll covers.

3 corresponds in principle to that of FIG. 2 with the difference that the total length L ₁ 'of the tubular body 2 is made larger. For example, L ₁ according to FIGS. 1 and 2 can be approximately 100 mm, L ₁ 'approximately 150 mm. The rest of the construction is basically the same. The same parts are identified by the same reference numerals.

The length _{17 of} the leg 5 of the paint roller bracket 4 is dimensioned such that it always penetrates the full length L _{2 of} the clamping sleeve 4 in the individual installation examples. As shown in Fig. 3, it is made slightly larger than half the length L, '.

Due to the symmetry along the central plane of symmetry 7, the clamping sleeve 6 can be inserted into the tubular body 2 in the correct position on both sides. This facilitates the automatic assembly of such parts. The detail Y from FIG. 5 is additionally shown in FIG. 6. This results in particular in the initially flattened larger radius r ₁ of the part of the locking web 9 pointing towards the opening 12 and the smaller radius r _{2 of} the subsequent curvature of the locking web 8. This allows the clamping sleeve 6 to be simply pushed on over the run-up slope 18 via this locking groove 9. In the same way, the locking groove 8 is formed. The center of the circle for the radius r ₁ is identified by 29, the center of the circle of the radius r ₂ by 30. These lie on a diameter d ₅ or d ₆ . The invention is not limited to the exemplary embodiment described. Rather, it also encompasses all modifications within the framework of the inventive concept.

• 1 paint roller
• 2 basic body / tubular body
• 3 roller cover
• 4 paint roller hangers
• 5 cranked legs from 4
• 6 bearing bush / clamping sleeve
• 7 radial median plane
• 8 rest bridge
• 9 rest bridge
• 10 symmetry longitudinal axis
• 11 fret
• 12 opening
• 13 radial projection
• 14 radial projection
• 15 locking groove
• 16 center line
• 17 leading edge
• 18 bevels
• 19 bearing collar
• 20 chamfers a ₂
• 21 interior of 2
• 22 end
• 23 line
• 24 plugs
• 25 stoppers
• 26 locking groove
• 27 end collar
• 28 cover closure
• 29 circle center
• 30 circle center
• 31 longitudinal central axis
• 32 pipe section
• 33 grooves
• 34 pipe section
• 35 bridge
• 36 longitudinal slot
• 37 longitudinal axis

Claims (10)

1. Roller body for a paint roller, with a tubular base body or tube body (2) for receiving a roller cover (3) made of plush, fur or foam or the like, with an inside the tubular body (2) arranged, longitudinally slotted, axially fixed and rotatably mounted clamping sleeve (6) as a bearing for a paint roller bracket (4), the axial fixing of the clamping sleeve (6) being carried out by means of a snap connection which comprises an annular circumferential radial latching web (8, 9) in the tubular body (2) which in An adapted, circumferential locking groove (15) engages on the circumference of the clamping sleeve (6), characterized in that the tubular body (2) has at least two at least on one side of its radial central plane (7) arranged perpendicular to the longitudinal central axis (31) of the tubular body (2) Has circumferential locking webs (8, 9) which are arranged axially offset in the tubular body (2) and that the clamping sleeve (6) depending on the embodiment of the roller cover it (3) can be locked in place in the axially outer (8) or inner (9) locking bar. 2. Roller body according to claim 1, characterized in that the clamping sleeve (6) in the axially outer locking position in the tubular body (2) extends approximately to the tube opening (12) of the tubular body (2) and that a radial, annularly closed collar (11th , 35) at the end of the clamping sleeve (6) largely closes the pipe opening of the pipe body (2) remaining around the paint roller bracket (4, 5). 3. Roller body according to claim 1 or 2, characterized in that the clamping sleeve (6) in its area facing the radial central plane (7) facing region is axially extended by a pipe section (32) and an end-to-end bearing collar (19) for guiding the clamping sleeve ( 6), the diameter D ₆ of the bearing collar (19) preferably being dimensioned slightly smaller than the inner diameter d _{2 of} the two locking webs (8, 9). 4. Roller body according to claim 3, characterized in that the inner diameter d _{4 of} the tubular body (2) in the region of the bearing collar (19) of the clamping sleeve (6) is adapted to this with little play. 5. Roller body according to one or more of the preceding claims, characterized in that the radial center plane (7) of the tubular body (2) is designed as a center plane of symmetry. 6. Roller body according to one or more of the following claims, characterized in that the clamping sleeve (6) in the axially inner position (Fig. 2, 3) in the tubular body (2) is arranged such that the tube opening (12) by means of at least one additional stopper (24, 25) can be closed, the tube stopper being longitudinally slotted and having its own locking groove (26) for connection to the locking web (8) as a snap connection. 7. roller body according to claim 6, characterized in that the plug 24, 25 has radial grooves 33 or the like for fixing when turning over plush. 8. Roller body according to one or more of the following claims, characterized in that the plug 24 has an end collar (27) for closing the edge opening (12) of the tubular body. 9. Roller body according to one or more of the preceding claims, characterized in that the inlet opening (12) for the paint roller bracket (4) opposite opening (22) of the tubular body (2) with a further end with the tubular body (2) flush and is provided with a longitudinally slotted plug which is closed towards the outside and preferably also serves for plushing in and has a locking groove (26 ') for the outer locking web (8) in the tubular body 2 for producing a snap connection with the tubular body. 10. Roller body according to one or more of the preceding claims, characterized in that the clamping sleeve (6) consists of a first tube section (34) which is limited on the one hand by the collar (11) and on the other hand by a radial projection (13) that The collar (34) is followed by the locking groove (15) formed by radial projections (13, 14), that the radial projection (14) is followed by a further tube section (32) which is delimited at its end by the bearing collar (19).

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