EP0940226A2 - Tensioning tool - Google Patents

Abstract

The tool is esp. for the tensioning of a tent awning on support frames of camping houses. The edge of the awning is held between clamping faces of the tool. The clamping faces are connected to a lever arm, to support the tool on the frame when tightening the plastic awning. The lever arm length between arm grip and support point on the frame, and the distance between support point and clamp face are dimensioned, so that for tensioning of the awning, power intensification results, when the lever arm with clamp face is turned about the support point. The clamp face has a flat section for gentle holding of the awning surface.

Description

The invention relates to a clamping tool for covering skeleton components with plastic sheets, especially for covering support frames for Camping houses with tarpaulins.

In the case of camping houses, which consist of individual wall and Roof parts exist, the individual elements to be assembled are designed so that tent tarpaulins attached to them to close the interior of the camping house can be. Overall, the constructive structure of the well-known camping houses always by its purpose, namely an "only temporary" construction of the house certainly. It is therefore characteristic that opening and closing is as simple and quick as possible Dismantling the camping house.

In many cases, however, the permanent parking space has become a habit for campers simple assembly and disassembly of the camping house is for its desired quality no longer crucial. Camping houses are considered as such Long-term housing units designed for leisure, especially on weekends are used frequently and for those who want to have a comfortable interior an external appearance is expected, that of a stationary house type if possible comes close.

When realizing such camper requests, the basic concept of Camping house, namely that it can be dismantled into individual parts (wall and Roof parts) are preserved, so that the building authority requirements on camping buildings can be sufficient on campsites. For this purpose, the wall and roof parts of the Camping house individual parts from several square meters of wall or roof area mostly welded support structures made of semi-finished products, in particular Made of metal profile elements, which are covered with plastic sheets as skeleton components and are then completely covered on the spot at the campsite For this purpose, appropriately fixed shelves are installed and firmly connected become. The plastic sheets are stretched on the skeleton components so that a Wrinkle-free smooth outer wall surface is created, which with the tent character of the usual construction degradable and collapsible tarpaulin deviates considerably. Give the wall parts the camping house has a stable appearance comparable to a permanent home.

The skeleton components can be covered on both sides with plastic sheets, which is the comfort increases in the interior, but at the same time also serves for better heat protection.

The covering of the skeleton components with large-area stable plastic sheets is particularly expensive because of the considerable weight of these tracks. To permanently To obtain smooth, wrinkle-free wall surfaces, the plastic sheets on the supporting structure pre-tensioned attached.

For camping tents and textile structures that are temporary and quick to set up Degradation are determined, it is known from DE-G-8701466 for attaching the tent plan the erected tent scaffold on the tent scaffold frame several to one on the tent scaffold frame each fixed pivot to attach rotatable levers to which the tent plan to attach is. Each time you turn one of these levers around its joint, the tent plan is created stretched on the tent scaffold, patch by patch, the one created Tension in the tent plan after turning the lever and tightening the tent plan is also used to fix the lever in its end position.

Another fixation device for tarpaulins fixed to the tent frame is known from DE-OS-3242614 A1. Tongues are provided for tensioning the tent plan, between which the tent plan can be inserted with its edges. The tongues are to attach the tent plan to the edge areas held by the tongues Anchored beams that are evenly spaced on the tent frame.

A fastener for bracing a tent plan is also in DE-OS-3310895 A1 described. The tent plan is carried out by means of loops formed on the edge of the tent plan Loops insertable profile strips attached to a support on which the profile strips be non-positively stored.

In such fasteners for tarpaulin fixedly connected to the tent frame are a large number for the creation of smooth, wrinkle-free flat surfaces relatively closely spaced clamping elements necessary. To do that Maintaining the external appearance of a stationary house type is the tensioning element also cover and, if possible, make them invisible.

The object of the invention is a tensioning tool for plastic sheets, in particular Tent tarpaulins for a permanent plastic covering attached to a supporting frame to provide, which is suitable for large-scale supporting structures with stable plastic sheets in easy to string, with the plastic sheets smooth on the scaffolding and form largely wrinkle-free wall surfaces. The clamping tool should be flexible manageable and no longer connected to the scaffolding. It's supposed to be made a large number of other covered scaffolding can be used again.

This task is for a clamping tool of the type mentioned in accordance with the Invention solved by the features specified in claim 1. After that used a tensioning tool for covering the supporting frameworks, which is suitable for the Grasp plastic sheets without damaging their surface and on the scaffolding to pull smoothly. The tensioning tool has a surface of the plastic sheet gentle clamping surface to hold the plastic sheet firmly on your Edge area and a lever arm firmly connected to the clamping surface with which the tensioning tool can be supported on the supporting structure when the plastic sheet is smoothed is. The lever arm length is between a handle on the lever arm and the Support point on the scaffolding and the distance between the support point and Dimension the clamping surface so that there is a for tensioning the plastic sheet Power boost when turning the lever arm and the clamping surface connected to it around the support point. The application of large, smooth plastic sheets the supporting structure (skeleton component) is considerably facilitated.

In a further embodiment of the invention according to claims 2 to 5, To connect the clamping surface and lever arm like a pair of pliers, the Support point is arranged on the tool head. It is advantageous to support one on To form a lever arm attached support edge that runs parallel to the axis of rotation.

Instead of a support edge, a rounded support surface can also be provided which turns the tool head when turning the lever arm on the supporting frame like a Pliers can roll off.

Fig. 1

Spannwerkzeug bei seiner Anwendung zum Bespannen eines Trägergerüstes mit einer Kunststoffbahn;

Fig. 2

Spannwerkzeug mit Klemmleiste;

Fig. 3

Querschnitt durch ein Spannwerkzeug nach Fig.2 gemäß Schnittlinie III/III;

Fig. 4

Spannwerkzeug-Detail: Ausbildung für Bewegungsspiel für eines der Klemmteile zwischen seinem Führungsstück und zugehörigem Hebelarm gemäß Schnittlinie IV/IV nach Fig.3 in einem gegenüber Fig.3 vergrößerten Maßstab;

Fig. 5

Spannwerkzeug mit gerundetem Werkzeugkopf.

The invention is described below with reference to exemplary embodiments which are shown schematically in the drawing. The figures show in detail:

Fig. 1

Tensioning tool in its application for covering a support frame with a plastic sheet;

Fig. 2

Clamping tool with terminal block;

Fig. 3

Cross section through a clamping tool according to Figure 2 along section line III / III;

Fig. 4

Clamping tool detail: Training for movement play for one of the clamping parts between its guide piece and associated lever arm according to section line IV / IV according to Figure 3 on an enlarged scale compared to Figure 3;

Fig. 5

Clamping tool with a rounded tool head.

Figure 1 shows schematically a profile part 1 of a metallic supporting structure, e.g. one Supporting structure made of skeleton components made of galvanized structural steel, stainless steel or aluminum. The profile part 1 is on one of its surfaces, in the exemplary embodiment on it Cover the outer surface 2 with a plastic sheet 3. To apply the Plastic sheet serves as a clamping tool, a clamp 4 with which the plastic sheet 3 at its outer edge, grasped at the hem 5 and smoothly drawn on the outer surface 2 and can be excited. In the exemplary embodiment, the plastic sheet 3 of the Outer surface 2 forth over two further surface areas 2a, 2b of the profile part 1 and covers them. The clamping clamp 4 is when tensioning the surface area 2c supported. To attach the tensioned plastic sheet 3 are Fastening screws 6 are provided, which are to be used on the scaffolding, in Exemplary embodiment in bores 7 on the inner surface area 2b of the profile part 1.

The clamping clamp 4 used for tensioning the plastic sheet has for gripping the Hem 5 a clamping strip, which is formed by two clamping parts 8a, 8b, between which the plastic sheet 3 can be inserted with its hem 5. The clamping part 8a is attached to a lever arm 9, the clamping part 8b is a lever arm 10 Clamp 4 out. Both lever arms 9, 10 are via a common joint 11 connected to each other and pivotable about the joint. The lever arms 9, 10 with the Clamping parts 8a, 8b can be handled in this way like a collet, the Lever arms are designed as handles that against each other by means of the joint 11 are mobile. When the lever arms are pressed together, the clamping parts 8a, 8b act like jaws and clamp the plastic sheet 3 between its clamping levels 12 non-positive.

To clamp the plastic sheet 3, the clamp 4 with its tool head 13 supported on the supporting structure, in the exemplary embodiment on the profile part 1 on the latter Surface area 2c, and rotated about a support edge 14 on the tool head 13, in Embodiment in the direction of rotation 15 until the plastic sheet on the outer surface 2 of the The supporting frame rests smoothly in the desired tension and by means of the fastening screws 6 is to be fixed. The support edge 14 runs parallel to the axis of rotation of the Clamp, in the exemplary embodiment also parallel to the joint axis 11a of the joint 11. Instead of providing a support edge on the clamp 4, the tool head can 13 - similar to the head of a pair of pliers - also rounded, see Embodiment according to Figure 5 tool head 13 '', so that the position of the Support point for the clamping tool on the support structure when clamping the Plastic web and turning of the clamping tool changed. In Figure 5 are Tool parts that correspond to the embodiment shown in Figure 1 with same reference number but additionally marked with a double dash ('').

Another embodiment of a clamp is detailed in Figures 2 to 4 shown. In Figures 2 to 4 are all tool parts to distinguish them analog training according to Figure 1 marked with a dash ('). The clamp 4 ' has in the exemplary embodiment clamping parts 8a ', 8b', on their facing each other Insides, the clamping levels, plastic coverings 16 'are provided, the Plastic quality corresponds to the quality of the plastic sheet with which the supporting structure e.g. to cover for a camping house. In the exemplary embodiment for Plastic covering material of the plastic sheet itself used, e.g. the tent plan Corresponding material such as coated carrier fabric (industrial fabric) according to DIN 60001. Surface damage to the plastic sheet when grabbing and pulling with the clamp as a result of the surfaces of the clamping planes being too hard largely avoided.

The clamping parts 8a ', 8b' are attached to the lever arms 9 ', 10' in such a way that the Move the clamp parts parallel to each other when the lever arms are around her common joint 11 'are pressed together. For this are in Embodiment by means of studs 17 ', see Figure 2 and sectional drawing Figure 3, clamping part 8a 'attached to lever arm 9' and clamping part 8b 'to a guide piece 18', sliding for guiding the clamping part 8b 'on the lever arm 9' along a sliding plane 19 ' is slidably attached. The guide piece 18 'is perpendicular to the clamping plane of the Clamping parts 8a ', 8b' movably guided. For this purpose, the sliding plane 19 'can be a slide rail 19a 'for centering the guide piece 18' during its movement. In Figure 4 a slide rail 19a 'is indicated by dashed lines. Guide piece 18 'and lever arm 10' are connected to each other with a bolt 20 ', the guide piece at a Rotary movement of the lever arm 10 'around the joint 11' gives scope for sliding on Lever arm 9 '. In the exemplary embodiment, the bolt 20 'is by means of a centering nut 21' attached to the lever arm 10 ', in the exemplary embodiment on a fork part 10a' of Lever arms 10 ', which - as shown in Figures 3 and 4 - with its fork parts 10a', 10b ' Guide piece 18 'and lever arm 9' comprises. Around the guide piece 18 'movement play to give, the bolt 20 'is inserted in the guide piece 18' in a recess 22 ', whose diameter is larger in accordance with the desired play is than the outer diameter of the bolt 20 '. This game of movement between Lever arm 10 'and guide piece 18' also enables the clamping parts 8a ', 8b' to the lever arms 9 ', 10' between the plastic sheet without tilting against each other clamp yourself in. The plastic sheet can thus be used on the entire clamping level pack evenly between the clamping parts and without local overload and pull.

In the exemplary embodiment according to FIGS. 2 to 4, the clamping plane for the plastic web is between the clamping parts 8a ', 8b' designed stepwise, see Figure 2. For this purpose, the Clamping parts 8a ', 8b' each with a step running parallel to their outer edges 23 ' 24 'provided, wherein both stages are designed such that they Squeeze the clamping parts 8a ', 8b' into one another and clamp them Clamp the plastic sheet firmly between them. The plastic sheet can be in the Do not slip the clamping plane when pulling with the clamp.

The necessary tensile force for pulling and smoothing the plastic sheet in particular Tent tarpaulin on the outer surfaces of the supporting framework to be covered is by means of as Clamping tool used clamps 4,4 ', 4' 'generated by leverage. As in FIG. 1 shows the clamping plane 12 between the clamping parts 8a, 8b Support edge 14 on a vertical distance L1, which is dimensioned smaller than that Distance L2 between the support edge and the force application point 25 on the lever arm 10 Clamp 4. The force application point 25 results from a correspondingly adapted Training of the handles on the lever arms 9, 10 and by the respective access of the Installers when using the clamp. The force application point 25 is shown in FIG. 1 only entered schematically. The lever length ratio L2 / L1 causes one Power amplification for moving the plastic sheet.

Between the lever arms 9,10; 9 ', 10'; 9 '', 10 '' is a compression spring 26, 26 ', 26' ' used the lever arms and thus the clamping parts 8a, 8b; 8a ', 8b'; 8a '', 8b '' apart when the clamps are not in use. In this "open position" the clamps are each fixed by means of a buffer block 27 ', which the Sliding movement of the guide piece 18 'limited, as shown in Figures 2 and 3.

For covering support frames or skeleton components for camping houses with correspondingly large-area plastic sheets is thus a according to the invention Tensioning tool is provided, which is suitable for the plastic sheets without damage grasp its surface and pull it smooth on the supporting structure. The clamping tool has a clamping surface for clamping the plastic sheet and with the clamping surface connected lever arms, wherein when covering one of the lever arms on the Supporting structure can be supported when smoothing the plastic sheet. The lever arm length up to to the support point on the metal skeleton and the distance between the support point and Clamping surface are each dimensioned in such a way that a strengthening when tensioning the Plastic web is reached. The application of large, smooth plastic sheets the metal skeleton is so much easier.

Reference list

Profile part

1

Outside surface

2nd

Surface areas

2a, 2b, 2c

Plastic sheet

3rd

Clamp

4, 4 ', 4' '

hem

5

Mounting screws

6

drilling

7

Terminal strip with clamping parts

8a, 8b; 8a ', 8b'; 8a '', 8b ''

Lever arms

9, 10; 9 ', 10'; 9 '', 10 ''

Fork parts

10a ', 10b'

joint

11, 11 ', 11' '

Hinge axis

11a

Clamping level

12th

Tool head

13, 13 ''

Support edge

14

Direction of rotation

15

Plastic covering

16 '

Stud screw

17 '

Guide piece

18 ', 18' '

Sliding plane

19 '

Slide rail

19a '

bolt

20 '

Centering nut

21 '

Recess

22 '

Outer edge

23 '

step

24 '

Force application point

25th

Compression spring

26, 26 ', 26' '

Buffer

27 '

Claims (10)

Clamping tool for covering skeletal components with a plastic sheet, especially for covering support structures for camping houses with a tent plan, the non-positively on their edge smell between a clamping surface of the Clamping tool is graspable, with a lever arm being firmly connected to the clamping surface, with which the tensioning tool on the supporting structure when smoothing the plastic sheet is supported, and wherein the lever arm length between a handle on the lever arm and the support point on the support structure and the distance between the support point and Clamping surface is dimensioned such that there is a for tensioning the plastic sheet Power boost when turning the lever arm and the ones connected to it Clamping surface around the support point results, and wherein the clamping surface is a Surface of the plastic sheet has a gentle clamping plane. Clamping tool according to claim 1, characterized in that the clamping surface and Lever arm are connected like pliers and the support point on Tool head is arranged. Clamping tool according to claim 1 or 2, characterized in that for support a support edge attached to the lever arm is provided which is parallel to the axis of rotation runs. Clamping tool according to claim 1 or 2, characterized in that for support on the lever arm a rounded support surface for rolling the tool head when Rotation of the lever arm is provided on the support frame. Clamping tool according to one of the preceding claims, characterized in that that the clamping surface is covered at least on one side with a plastic, which is one of the Plastic sheet has appropriate material quality. Clamping tool for covering skeletal components with a plastic sheet, especially for covering support structures for camping houses with a tent plan, the non-positively at its edge between a clamping surface of the Clamping tool is graspable, with a lever arm being firmly connected to the clamping surface, with which the tensioning tool on the supporting structure when smoothing the plastic sheet is supported, and wherein the lever arm length between a handle on the lever arm and the support point on the support structure and the distance between the support point and Clamping surface is dimensioned such that there is a for tensioning the plastic sheet Power boost when turning the lever arm and the ones connected to it Clamping surface around the support point results, and wherein the clamping surface is a Surface of the plastic sheet has a gentle clamping plane. Clamping tool according to claim 1, characterized in that the clamping surface and Lever arm are connected like pliers and the support point on Tool head is arranged. Clamping tool according to claim 1 or 2, characterized in that for support a support edge attached to the lever arm is provided which is parallel to the axis of rotation runs. Clamping tool according to claim 1 or 2, characterized in that for support on the lever arm a rounded support surface for rolling the tool head when Rotation of the arm is provided on the scaffolding. Clamping tool according to one of the preceding claims, characterized in that that the clamping surface is covered at least on one side with a plastic, which is one of the Plastic sheet has appropriate material quality.

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