DE1261037B - Roller body for paint roller - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

B44d

German KL: 75 C-25

Number: 1 261037

File number: F 45019 VI b / 75 c

Filing date: January 22, 1965

Open date: February 8, 1968

The present invention relates to a roller body for paint rollers made of plug-in parts with each an outer and inner tube, which are firmly connected by radial supports and at least one At the end of the wall thickness weakened at half the wall thickness.

Hand rollers have been known for a long time, which are used in particular for the application of paint and on a retaining bracket have a rotatably mounted, replaceable roller. The bodies of such rollers can be made with or without an inner tube, which is used for mounting on the pin of the bracket. There are also inking rollers, the ends of which have bearing plates with pegs that are in recesses or Bores of the bracket arms are placed.

Now, depending on the application, roller bodies of different lengths are required. With the mentioned In this case, paint rollers always need their own new roller body of the appropriate length. This is not only uneconomical for the consumer, a large number of them Must purchase and transport roll body, but also for the manufacturer, which is to sees forced to an undesirable variety of types.

Attempts have therefore been made to create plug-in roller bodies that can be pushed in or removed the length of intermediate pieces can be changed. An embodiment of such a roller body consists of at least four parts that can be plugged together in pairs and form-fit with one another are connected. There is an inner tube that is used to hold the retaining bracket or is attached to it The pin is used, assembled from two parts, at the other ends of which end shields are arranged. These snap into ring grooves at the end of the outer tube parts, the ends of which face one another in a form-fitting manner interlock.

Such a structure is not only relatively complicated, but above all for manufacturing unfavorable, since expensive sliding tools because of the undercuts required for the locking are needed and only relatively soft and compliant materials can be used.

There are more plug-in roller bodies for paint rollers have become known in which two or more Parts are present whose ends to be connected each have wall thickness weakening to half the wall thickness have, the outer diameter of one part each being the inner diameter of the the other part. The individual parts are therefore dissimilar, which means increased effort for production and storage conditional. To a roller body for paint rollers

Applicant:

Wolfgang Feine, 7971 Isgazhofen

Named as inventor:
Wolfgang Feine, 7971 Isgazhofen

To achieve sufficient strength of the assembled roller body are also additional Fasteners required. Since such roller bodies are also not fixed to an inner tube are connected and sealed on the outside, is the penetration of liquid into the interior of the roller body unavoidable, which makes handling difficult and possibly causes an uneven application of paint.

The object of the invention is therefore to avoid these disadvantages and to provide a roller body create, which with sufficient structural strength is simply constructed, conveniently pluggable, extendable and can be produced in an economical manner.

A roller body made of plug-in parts for paint rollers of the type described above is according to the invention characterized in that the wall thickness weakening of one half of the pipe circumference has an outer diameter equal to the inner diameter of the weakened other half of the Corresponds to the pipe circumference.

This achieves a roller body of uniform diameter and high strength, the can be conveniently stored on a bracket or peg attached to it. The positively plugged together At the same time, parts are practically liquid-tight. The penetration of Liquid into the interior of the roller body and the resulting increase in weight are therefore excluded. It is also very easy to remove for cleaning, replacement or extension of the roller body has become possible. No latching is required when the parts are put together. Even with relatively hard materials, the parts hold against each other in a quick press fit, which, however, can easily be released again without the aid of a tool. One has further the advantage that only parts of one type need to be manufactured, those with the weakened ends can be plugged together. Since these only fit together in one position, there is also security against rotation given. Of course it is also without

809 507/554

Difficulty possible, parts with finer subdivision, for example wall thickness weaknesses extending over a quarter or an eighth of the circumference to manufacture. Such parts can be stacked in several layers, in the examples in two or four positions. Also only one of the intermediate parts is needed Type to be manufactured. At the ends of the intermediate part you will see the wall thickness weakening appropriately offset by half the circumference to attach the second end piece in the same To be able to attach position as without an intermediate piece. But it is just as possible to use the intermediate part to be designed symmetrically, in which case the second end part can be attached offset by 180 °.

The parts can also be produced in a simple manner using known injection molding processes, the remaining pressed skin forming a radial support. If the length is not too great, a Roller bodies closed at the ends also have sufficient structural strength. By being continuous Radial supports formed by annular disks can also be used inside the parts one or more radial supports can be arranged. This makes the parts simple and at the same time Stiffened to save material.

This creates an absolute seal against the penetration of paint into the interior of the plug-in parts and a simple stop for the journal of a Given the retaining bracket, which is also fixed in its position to the roller body. Also an end shield that For example, if you use paint rollers to clamp a plush cover, you can insert it into the Outer pipe can be inserted until it finds its natural limit on the inner pipe.

It is very useful that the outer tube, radial supports and inner tube of each part from one Piece.

This measure not only simplifies production, because operations for the additional connection of the components of a plug-in part are omitted, but also the Advantage of simplified handling and cleaning of the plug-in parts. So there are no connections are present, which could loosen, is a displacement of the outer tube relative to the Inner tube excluded.

Embodiments of the invention are explained below with reference to the drawing. It shows

F i g. 1 shows a longitudinal section through the end part of a roller body according to the invention with a bearing shield,

F i g. 2 an oblique view of a partially cut-open plug-in part;

F i g. 3 an intermediate part,

F i g. 4 shows an oblique view of an end part made from half-shells according to FIG. 1 without end shield, F i g. 5 integral half-shells, Fig. 6 a pair of connected half-shells.

The end part of a roller body according to the invention consists according to FIG. 1 from an inner tube 1 and an outer tube 2, which are fixed to one another by a radial support 3 designed as an annular disk connected and closed at the same time. There are weakened walls at the opposite end of the pipe 4 are provided, each of which extends over half the circumference, as can be seen even better from FIG. The radial support 3 offers a Stop for a bearing plate 5 with a funnel-shaped Approach engages in the inner tube 1 and even has a bore for receiving a retaining bracket having. The end shield 5 can also serve to clamp a plush cover 6 on the roller body.

F i g. 3 shows an intermediate part of a roller body according to the invention, in which the inner tube 1 is connected to the outer tube 2 in the middle by a radial support 3. The wall thickness weaknesses 4 are arranged complementarily at both ends. This asymmetrical arrangement has the Advantage that end parts of the roller body can be plugged together in the same position as without Intermediate piece.

F i g. 4 shows how an end part of a roller body according to FIG. 1 is made from two half-shells which ■ were welded to one another both on the inner pipe 1 and on the outer pipe 2. The resulting Outer seams 8 can then either be removed or used to attach one accordingly trained coating can be used.

In Fig. 5 shows how individual half-shells are manufactured in one piece. Included Any number of radial supports 3 can be arranged at any point along the tubes 1 and 2. These groups of half-shells can be folded up and / or along any seams 9 cut open.

In the embodiment according to FIG. 6, the half-shells are manufactured in pairs, with the outer tube 1 the exposed edges are provided with complementary wall thickness weaknesses 10. Works If you put these half-shells together, a round roller body is created, the seams of which into the Wall thickness are laid into it. Outer seams 8 therefore do not appear here.

As an application of the invention, all possibilities are to be designated, from the inner and outer pipe to provide existing parts of roller bodies with wall thickness weaknesses at at least one end, that these can be positively plugged together without changing the diameter.

Claims (2)

Patent claims: 1. Roller body for paint rollers made of plug-in parts, each with an outer and inner tube, which are firmly connected by radial supports and at least at one end wall thickness weaknesses each have half the wall thickness, characterized in that the wall thickness weaknesses of one half of the Tube circumference has an outer diameter which is the inner diameter of the weakened the other half of the pipe circumference. 2. roller body according to claim 1, characterized in that the outer tube, radial supports and inner tube of each part consist of one piece. Considered publications:
French patent specification No. 1112 091,
1,374,845. 1 sheet of drawings 809 507/554 1.68 © Bundesdruckerei Berlin