EP1467046A1 - Wooden handle with an inner stiffener - Google Patents

Abstract

The outer surface of the door or window handle (1) consists of two wooden half-shells (1.1,1.2) adhered together and carved to a visually pleasing and ergonomically convenient shape. The portion extending approximately at right-angles to the axis of rotation is curved (6). A metal tube (2.3) has a square bore (2.1) which fits on a square pin in the door or window lock. A square- section rod (2) is bent into an L-shape and is inserted into the end of the tube. It fits into cutouts in the otherwise flat mating surfaces (4) of the two wooden half-shells and acts as a reinforcement.

Description

The invention relates to wooden latch with internal metal or plastic stiffening, especially for opening and closing building windows and doors.

There are different handles for opening and closing windows and Doors known. Some of them consist of an inner solid core, e.g. out a metal in the form of a pawl, with a sleeve made of plastic or plastic or a less solid metal or combinations thereof. So are e.g. from CH-627 223 and DE 101 01 245 jacks known from a rigid core made of fire-resistant material and with a shell are provided with another material. The free one facing the latch plate Core end is with a cavity for inserting a square neck with which the lock latch is actuated.

Jacks without a wooden surface work on wooden windows or doors are aesthetic and cold. Also the touch when handling with these handles cause unpleasant feelings, one of which e.g. the cold represents. This is particularly the case with metal handles due to an unpleasant accompanying the smell of the hands.

Jacks with wooden cladding are also known. For example, from FR 2 734 302 known a pawl, which consists of a metal neck, which on its, to the end facing the lock plate with a square connection point and at the opposite end with a rod-shaped straight stiffener is provided. The rod-shaped stiffener has a central bore elongated handle part pushed on, which is turned out of a piece of wood and is axially secured with a screw. DD 217 835 is a jack known, the turned cylindrical handle part with both a blind Central hole for the stiffening fastening screw, as well as with a is provided to this vertical recess in which the end of the Metal neck of the jack is inserted. The stiffening fastening screw the end of the handle is screwed into the wall of the metal neck, which in the mentioned vertical recess in the wooden handle is let in.

The disadvantage of these jacks, which correspond in terms of strength, consists in the fact that only the handle section of the latch is covered with wood and the Metal neck acts cold. The handle part can be made of wood due to the straight Stiffening, on which it is pushed, and its Machining technology, only have a cylindrical shape, which the current aesthetic tendencies of the rounded handle shapes, which be produced with the help of metal casting, does not correspond.

From DE 28 39 420 a latch is known, the handle part and neck part made of wood are made. The neck part of the jack is made of a wooden sleeve in the shape of a Cylinder or a truncated cone made, being veneered in its Central bore a stiffener in the form of a sleeve is firmly inserted into which the connecting square is inserted. The handle part or handle is off a non-stiffened wooden part, this with the neck part of the pawl is connected to a central bolt made of wood, this firmly in the Cross hole is used, both through the wooden sleeve, as well as through the Neck stiffener goes through.

The disadvantage of these solutions is the simple, unaesthetic shape of the Jack, which consists of two essentially at right angles to each other connected elongated, essentially cylindrical parts, namely Handle and neck part. Such wooden pods that only with a straight stiffener after their processing or shaping, you can not in edit a shape distinctly different from the straight stiffening since it It is essential to adhere to the minimum thickness of the wooden case. In addition, it is necessary to cover or to cover the openings of the holes dazzle.

Finally there is also one from the Czech utility model No. 5509 Door handle and a door hanger are known where the door handle is made from layers of wood veneer is glued together with adhesive and pressed together firmly are, on the pawl the veneers in the direction of the handle portion and with their surface perpendicular to the fictitious, laid through the curved axis of the jack Level. To connect the latch to the door lock is on the a metal ring, preferably towards the end of the pawl facing the lock shield made of brass, which is firmly connected to the jack.

The main disadvantage of this solution is the complexity of the Production and also in the inhomogeneity of the jack surface - opposite the pure wood surface is 2 to 3 cm from the veneer Surface up to 39 layers of adhesive. Another disadvantage of this solution is based in that the natural structure and the drawing of the wood on the Jack surface disappears. This jack therefore has no practical Application found.

The wooden latch eliminates the above-mentioned disadvantages with internal Stiffening, especially for building windows and doors, according to the generic term of Claim 1, the essence of which is that the neck portion of the stiffener in passes over the grip section of the stiffening and is firmly connected to it, the wooden cladding of the stiffening is formed by a wooden sleeve, which is divided by a sub-level into a first and a second part, which are mutually connected in the bearing surfaces, the sub-plane of the Wooden pod essentially parallel to that which runs through the central axis of the Stiffening is laid and in the contact surface of at least the first or second part of the wooden sleeve, a fastening groove is formed, the shape of which Essence is negative to the part of the stiffening firmly inserted in it and the complementary second or first part of the wooden sleeve with its contact surface to the Support surface of the first or second part is attached.

Such a construction enables the handles with wooden surface both the handle as well as the neck part that meet all the requirements for Bending and torsional strength correspond. The stiffening does not exist from two straight parts, but it is according to the required resulting shape the wooden handle shaped. Thanks to the processing of the already stiffened wooden sleeve you can get a higher one with common wood cutting and grinding tools Machining accuracy and a cheaper form of jack, both from achieve ergonomic, as well as from an aesthetic point of view.

For the pawls from which the square actuator can exit be advantageous if the neck portion of the stiffening and the handle portion of the Stiffening is formed from a single piece of material.

This enables both the simple shape of the stiffener out loud required latch shape, as well as the transition of the stiffening in the outstanding square.

For the pawls, which one in the end part of the neck section of the stiffening It can contain a cavity into which the actuating square is inserted be advantageous if the stiffening consists of two or more firmly connected Pieces is formed.

This enables both the simple shape of the stiffener out loud required latch shape, as well as the simple formation of the cavity for the Square in the neck section of the stiffener.

It is advantageous if the sub-plane of the wooden sleeve is identical to that through is the central axis of the stiffened plane.

Such a measure enables a latch to be formed, the wooden sleeve of which best meets the strength requirements imposed on the jack.

It is also advantageous if provided in the walls of the fastening grooves pocket-shaped recesses are formed.

These recesses may take up the excess adhesive with which the sleeve parts with each other and / or with the stiffening be glued together.

It is also beneficial provided the annual shoots of the wooden pod are in essence run parallel to the handle section of the stiffener

Such a construction ensures sufficient flexural strength of the Handle section also in its end section, which will then no longer be stiffened got to.

Fig.1

eine axonometrische Darstellung der Holzklinke mit innerer Versteifung, welche die Öffnung zum Einlegen des Vierkantes beinhaltet, wobei die Teilebene der Hülse identisch mit der Symmetrieebene der Versteifung ist,

Fig.2

den Querschnitt A-A von Fig.1,

Fig.3

den Querschnitt B-B von Fig1,

Fig.4

den Querschnitt C-C von Fig. 1,

Fig.5

die Draufsicht auf die Auflagefläche des ersten Hülsenteiles mit der Befestigungsnute,

Fig.6

den Längsschnitt durch die Versteifung mit der Buchse für den Endvierkant,

Fig.7

die Draufsicht auf die Auflagefläche des zweiten Hülsenteiles,

Fig.8

den Röntgendraufsicht auf weitere Alternative der Klinke mit der Versteifung mit Endvierkant und anders geteilter Hülse,

Fig.9

den Querschnitt D-D von Fig. 8,

Fig.10

den Querschnitt E-E von Fig. 8 und

Fig.11

den Querschnitt F-F von Fig. 8.

Some exemplary embodiments of the invention are illustrated in the accompanying drawings. Show it:

Fig.1

an axonometric view of the wooden latch with internal stiffening, which contains the opening for inserting the square, the partial plane of the sleeve being identical to the plane of symmetry of the stiffening,

Fig.2

the cross section AA of Figure 1,

Figure 3

the cross section BB of Fig1,

Figure 4

the cross section CC of Fig. 1,

Figure 5

the top view of the bearing surface of the first sleeve part with the fastening groove,

Figure 6

the longitudinal section through the stiffening with the socket for the end square,

Figure 7

the top view of the bearing surface of the second sleeve part,

Figure 8

the x-ray top view of another alternative of the pawl with the stiffening with end square and differently divided sleeve,

Figure 9

the cross section DD of Fig. 8,

Figure 10

the cross section EE of Fig. 8 and

Figure 11

the cross section FF of FIG. 8.

As can be seen from the attached drawings, the pawl consists of the stiffening 2, around which the wooden sleeve 1 is arranged. The wooden sleeve 1 consists of two elongated, mutually complementary parts, namely from the lower, first part 11 and from the upper, second part 12. The stiffener 2 is shaped approximately according to the course of the imaginary central axis of the resulting shape of the wooden latch, whereby the central axis O of the stiffener 2, which is advantageously identical to the imaginary central axis of the pawl, lies in the plane ψ. The plane ψ represents the plane of symmetry of the stiffening 2, wherein it is substantially perpendicular to the window or door not shown. The stiffener 2 includes the neck section 21, which faces the fitting of the lock (not shown) and is predominantly subjected to torsional stress when opened with the latch, and the handle section 22 of the stiffener 2, which is essentially parallel to the window or door leaf and when opened with the Jack is predominantly subjected to bending stress. The neck portion 21 of the stiffener 2 either merges directly into the square 23 (see FIG. 8) with which the pawl actuates the fitting of the lock, not shown, or the neck portion 21 of the stiffener 2 is provided with the cavity 25 is (see Fig. 1 and Fig. 6) for the tight fit of the square 23 for the opposite door handle or the inserted square for the window handles. The cavity 25 for the square 23 can either be formed directly in the reinforced end part of the stiffener 2, or it can be formed in the bushing 24, which is fastened to the stiffener 2, for example with the weld seam 27. For a better running fit of the pawl in the fitting of the lock or the lock shield, a fastening projection 26 is formed on the transition of the stiffener 2 into the square 23 and or on the free end of the socket 24 for the square 23.

The stiffener 2 is made of either metal or plastic, and preferably with the help of the die-casting process. This technology enables the casting of the stiffener 2, the course of the imaginary central axis corresponds to the resulting shape of the wooden handle.

The wooden sleeve 1, which surrounds the stiffener 2, or the wooden covering Stiffening 2 is carried out as follows:

The semi-finished product for a wooden sleeve 1 is provided by two elongated wooden prisms equally large footprints and with annual shoots that are essentially parallel to the longer prism sides run. The mutually facing base areas are processed so that they form the contact surfaces 111, 121 with which after inserting the stiffener 2 the two prisms by gluing each other get connected. The contact surfaces 111, 121 thus form the partial plane τ of the resulting wooden sleeve 1. In the contact surface 111, 121 of each prism the fastening grooves 141, 142 e.g. milled. Their shape is negative to the shape of the part of the stiffener 2 subsequently inserted into it, whereby it is about the Thickness of the layer for the adhesive is increased. The contact surfaces 111, 121 are coated with adhesive, after which they are fastened with their fastening grooves 141, 142 be placed on the stiffener 2. The two halves of the prism will be then z. B. jammed in a press. The possible excess of adhesive between the bonded contact surfaces 111, 121 is on the one hand in the For this purpose, pocket-shaped recesses 15 in the Flanks of the fastening grooves 141, 142 and, on the other hand, to the outside outside of the glued part 11, 12 pushed out. After this Glue together the first part 11 and the second part 12 of the wooden sleeve 1 the stiffened semi-finished product of the wooden handle on the Woodworking machine in the conventional manner in the required form Handle processed. After that, the final surface finishing is done Pickling or painting carried out. The fact that the semi-product of Wooden sleeve 1 is stiffened before processing by the stiffener 2 it is more rigid, as well as more stable with changes in moisture and can therefore with larger Accuracy can be edited.

When using stiffener 2 with rectangular or square Cross section, the partial plane τ of the wooden sleeve 1 tangential to one side of the Stiffener 2 are performed, as shown in FIGS. 9 to 11. In one in such cases, it is then not necessary to attach the mounting grooves 141, 142 in the Form contact surfaces of the two parts 11, 12 of the wooden sleeve 1, but it is sufficient to form the fastening groove 141 only in the support surface 111 and the second support surface 112 to the first support surface 111 and the Glue the bulkhead of the stiffener 2.

Within the scope of the invention, it is of course possible for the first part 11 and / or the second part 12 of the sleeve 1 into further complementary parts divide.

Claims (6)

Wooden latch with internal stiffening, in particular for opening and closing building windows and doors, consisting of the handle part, which is preferably parallel to the window or door leaf, to which the neck part adjoins, which faces the lock fitting of the window or door, whereby in the inner recess of the neck part of the wooden sleeve the neck section of the stiffener is fastened, characterized in that the neck section (21) of the stiffener (2) merges into the handle section (22) of the stiffener (2) and is in firm connection with it, whereby the wood cladding of the stiffening (2) is formed by the wooden sleeve (1), which is divided by the part plane (τ) into the first part (11) and the second part (12), which are mutually in their bearing surfaces (111, 121) are connected, the partial plane (τ) of the wooden sleeve (1) running essentially parallel to the plane (ψ) laid through the central axis (O) of the stiffening 2, i In the support surface (111, 112) of at least the first or second part (11 or 12) of the wooden sleeve (1), a fastening groove (141, 142) is formed, the shape of which is essentially negative to the part of the stiffening (2) that is firmly inserted in it and the supplementary second or first part (12 or 11) of the wooden sleeve (1) is fastened with its bearing surface (121 or 111) to the bearing surface (111 or 121) of the first part (11) or the second part (12). Wooden latch with internal stiffening according to claim 1, characterized in that the neck portion (21) of the stiffening (2) and the handle portion (22) of the stiffening (2) are formed together from one piece of material. Wooden latch with internal stiffening according to claim 1, characterized in that the stiffening (2) is formed from two or more mutually connected pieces. Wooden latch with internal stiffening according to one of the preceding claims, characterized in that the partial plane (τ) of the wooden sleeve (1) is identical to the plane (ψ) laid through the central axis (O) of the stiffening (2). Wooden latch with internal stiffening according to one of the preceding claims, characterized in that pocket-shaped recesses (15) are formed in the walls of the fastening grooves (141, 142). Wooden latch with internal stiffening according to one of the preceding claims, characterized in that the annual drives of the wooden sleeve (1) run essentially parallel to the handle section (22) of the stiffening (2).

Images