DE8511116U1 - Device for tensioning picture frames - Google Patents

Description

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Device for tensioning
Picture Frame

The invention relates to a device for tensioning picture frames, consisting of a movable clamping jaw, a clamping band, the ends of which are held on the clamping jaw, as well as several elbows with at least two that are displaceably arranged on the tensioning strap Legs that enclose an angle of at least about 90 ° between them.

Such a device known from the prior art consists of an adjustable clamping jaw as well as a tension band, which is held firmly on one side of the clamping jaw and on the other hand can be fixed on the clamping jaw by means of a clamping device. Are on the strap Several L-shaped elbows are displaceable arranged and held captive. The device serves to facilitate manufacture of picture frames. The edge strips forming the picture frame are usually on Miter cut and on the cut surfaces

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connected by glue or the like. So that these adhesive points can be pressed together and can be held firmly pressed together during the curing of the adhesive the clamping device provided, which üiit their Grips elbow pieces over the corners of the picture frame and with the clamping jaw on one corner of the Attacking the picture frame. The tensioning strap is with the elbows over the corners of the picture frame placed and after proper positioning, the clamping band is pretensioned relative to the clamping jaw. This position is fixed by an eccentric attached to the clamping jaw. Below the housing of the clamping jaw is relatively moved away from the clamping jaw, namely in the middle a threaded spindle. In this way, the tensioning strap is further pretensioned so that the frame firmly pressed together in its fastening position is.

When handling such devices, it has been found to be a disadvantage that the Angle pieces each enclose a fixed angle of 90 ° between their legs, so

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that there are handling

H trouble comes when the frame corners are different

Form an angular position, in particular angles greater than 90 °. The invention is based on this

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you with picture frames, the corners of which include other angles ice 90 °, especially obtuse angles, proper tensioning of the tensioning device is ensured.

To solve the problem, the invention proposes that the elbow has three jaws and the third leg forms different obtuse angles with the two other legs.

In this way it is possible by different orientations of the elbows relative to the Clamping strap to firmly encompass different picture frames in their angular position and during the Cure of the adhesive to hold it securely.

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It is preferably provided that the § Leg angles of 90 °, 120 ° and 135 ° with each other

It is also advantageous that the legs are hollow and open at the ends.

In this way it is possible to lead the tensioning strap through the two legs, which should rest on the picture frame to be fixed «Preferably it is provided that the Cavities form channels with a rectangular basic shape, the long sides of which are parallel to the clamping surface of the Legs run.

A tightening strap is usually used, which is designed in the form of a strip. In order to facilitate the interchangeability of the elbow relative to the tightening strap, it is proposed that that one narrow side of the elbow is designed to be open.

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For assembly, the picture frame is usually placed on a base, with the angle pieces as well can be placed on this pad and the tensioning strap can be easily inserted into these elbows from the open side can be inserted. After tensioning the device, the Elbows fixed relative to the frame, so that the mobility is then prevented. After releasing the device, the angle pieces can easily be removed from the tensioning strap to optionally different or the same frame construction of a further picture frame to fix.

Especially with picture frames that are not made of rectangular or square profile strips are formed, but whose edges are curved or otherwise curved, it is advantageous that the narrow side of the elbow has a groove profile that is adapted to its contour at least slightly elastic material is attached at least positively.

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On the one hand, this overlaid channel profile means that the angle piece on the tensioning strap cannot be lost but movably supported. On the other hand, the elastic channel profile allows when tightening the device adapts to the contours of the picture frame, creating a higher Position security and better fixation is achieved during the setting phase of the adhesive.

Embodiments of the invention are shown in the drawing and described in more detail below.
It shows:

1 shows a device according to the invention in view;

Fig. 2 shows the clamping device according to FIG. L partially shown in a other frame structure;

3 shows the same device in a further frame structure in FIG View according to FIG. 2;

Fig. 4 shows a section through the leg of the angle piece according to the section line IV-IV in Figure 1;

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FIG. 5 shows a variant of the angle piece in the same representation as FIG. 4;

FIG. 6 shows a further variant in the same representation as FIG. 4.

The device for tensioning picture frames 1 consists essentially of a different clamping jaw 2, a clamping band 3 and several on the tensioning band 3 displaceably arranged angle pieces 4. The tensioning band 3 is In the exemplary embodiment on the housing 5 of the moveable Clamping jaw 2 can be fixed by means of eccentrics 6. The clamping jaw 2 is via a threaded spindle 7 with handle 8 relative to the housing 5 (arranged displaceably, so that the device

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Picture frame 1 can be prestressed. The elbows 4 each have three legs 9,10,11, of which the legs 10 and 11 at an angle of

j: enclose 90 °, while the legs 9 and

} 10 an angle of for example 120 ° and the

Legs 9 and 11 an angle of for example

Include ι 135 °. The strap 3 is through

the inside hollow elbow pieces

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passed through, whereby the course in each case by (■

the matching legs 10 and 11 respectively. 9 and 10 or 9 and 11 takes place. The cavities of the Angle pieces 4 have a rectangular basic shape, as can be seen, for example, from FIG. 4; is. Their long sides are parallel to the clamping surface of the legs 9, 10, 11. The clamping surface lies on the outside of the picture frame 1.

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If the frame is to be held at different angles, the angle pieces are in accordingly other orientation on the tensioning strap 3, so that, for example, configurations according to FIG. 2 or FIG. 3 can be set. It is also possible between the legs of the elbow fj

Picture frame corners with slightly larger angle |

To clamp positions, whereby the corners of the picture frame are then not full in the corresponding The corner area of the elbow are only partially held by the legs. In the embodiment of Fig. 1 it would be two

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For example, a picture frame with a corner angle of 100 ° between the legs 10 is possible and 11 to hold. ' In order to facilitate the replacement of the elbows, it is provided that the Shark side of the elbow formed oileii is, as can be seen from the section in FIG. The elbows can then simply be lifted off the strap 3 in which they for example, be raised from the plane of the drawing according to FIG. You can then move on to other Orientation can be plugged back onto the tensioning strap 3, so that corresponding configurations as shown in Figs. 2 and 3 are easily accessible. As a further, particularly advantageous variant the embodiment according to FIG. 6 is viewed, in which on the open narrow side of the elbow A whose contour is adapted recessed channel profile 12 is attached, which from elastic material, for example plastic or rubber-like material, attached is. The channel profile can only be pressed onto the angle piece with a force fit. Through this elastic channel profile, the respective legs of the angle piece 4,

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which rest on the picture frame 1, adapt its outer profile well, if this, for example are rounded or arched. The possibility of easily changing the contra-angle handpieces is not hindered by these easily detachable channel profiles. Basically, the channel profile 12 be designed so that it can be pushed over each leg 9,10,11 individually can, or it can be a Rinnenprof ilstück 12 so formed that it is the complete Can accommodate angle piece 4, with only the junctions for the tensioning strap 3 remain open.

The invention is not restricted to the exemplary embodiment, but rather within the scope of the disclosure many times variable.

All new individual and combination features disclosed in the description and / or drawing are considered essential to the invention.

Claims (6)

Protection claims: 1. Device for tensioning picture frames or the like, in particular mitered, with each other Glue or the like connectable components, consisting of a displaceable clamping jaw, a clamping band, its Ends are held on the clamping jaw, as well as several on the clamping band displaceably arranged angle pieces with at least two legs that enclose an angle of at least about 90 ° between them, thereby characterized in that the angle piece (A) has three legs (9,10,11) and the third leg (9) with the the two other legs (10,11) encloses different obtuse angles. Postal checking account: Dortmund 25334-460 Bank account: Commerzbank A.G. Lüdenscheid (BLZ 45 (140026) No. 6234512 > * ■> a ι ι 111 * I I } II »RITI till Il · Il III 2. Apparatus according to claim 1, characterized in that the legs (9,10,11) angle of Include 90 °, 120 ° and 135 ° with one another. 3. Apparatus according to claim 1 or 2, characterized in that the legs (9,10,11) are hollow and are designed to be open at the end. 4. Apparatus according to claim 3, characterized in that the cavities channels (13) are rectangular Form the basic shape, the long sides (14) of which run parallel to the clamping surface of the legs (9,10,11). 5. Device according to one of claims 1 to 4, characterized in that a narrow side of the elbow (4) is designed to be open. 6. Device according to one of claims 1 to 5, characterized in that the narrow side • tit t · ■ · · · · · • I I ·· I I ·) · ι t ι ι ttl ttl ·· ι tec rc it ι «it ·· - 3 - of the angle piece (4) has a groove profile (12) made of at least one whose contour is adapted and cut out slightly elastic material is attached at least positively.