EA046250B1 - FOLDING TENT FRAME - Google Patents

Description

Technical field

The invention relates to a folding frame for a tent.

Prerequisites

Folding tent frames that have a gable roof usually consist of portal frames that contain rafters and posts, with the rafters connected to each other and the rafters and posts connected to each other using a pin joint. The portal frames are then joined in a row using purlins, usually at or near the frame pin joints. In this case, two types of runs can be distinguished. Ridge purlins are located where the rafters are connected to each other, usually at the top of the tent frame. The eaves purlins are located where the rafters are connected to the posts, or, in the case of a mansard roof, they are also located between the rafters in the place where the roof changes its slope.

Portal frames are usually folded at the pin joints, so that the rafters are bent towards each other at the ridge, i.e. at the top of the frame. Solutions are known in which the connection of the rafters to each other is ensured in their upper part using one pin connection, or other solutions are also known in which each rafter is connected to the ridge part in one pin connection, i.e. each rafter is separately connected to the ridge part in one own pin connection.

When unfolded, the pin connections are formed by a mechanical stop, which ensures the correct angle of inclination of the deployed rafters. As for the vertical forces acting after the frame is unfolded, mechanical fixation of the position is usually not required, since the rafters rest on stops formed in the pin connection. When unfolded, the racks rest on the ground vertically or at a steep angle. Unlike rafters, poles must be secured after unfolding to prevent them from unintentionally folding and subsequent collapse of the tent frame under the influence of wind or other forces acting in the horizontal direction. Typically, said fastening is provided by a fastening pin inserted through the pin connection of the post and rafters, etc. During the folding process, depending on the space between the folded rafters, the posts are bent outward to the outside of the rafters, inward to the inside of the rafters, or removed from the pin connection, usually by extending them.

In already known solutions for creating folding frames, the ridge girders are connected to the portal frame by a pin connection and are usually composite. In the middle of the eaves purlins, as a rule, there is a pin connection, and after folding the frame, the folded parts of these purlins are located side by side, as well as between the rafters of adjacent frames.

When folding the frame, the ridge purlins are usually divided into two parts as they intersect with the eaves purlins. When the frame is folded, the separated ridge purlins are folded to the rafters and folded eaves purlins or, in the case of a rafter-to-ridge connection where one rafter has one pin connection of its own, the disconnected ridge purlins are located between the folded rafters. Considering that the length of one half of the ridge purlin is usually greater than the height of the ridge part of the frame and this disconnected ridge purlin would create an obstacle when unfolding the frame, this purlin can be shortened telescopically. When unfolding the frame, the parts of the ridge purlin are mechanically connected to each other and, as an option, can be secured with a sleeve.

There are known solutions in which ridge purlins have a pin connection located in the middle, similar to cornice purlins. This solution is preferable only if the sum of the lengths of the folded ridge and eaves purlin is less than the length of the rafters. In this case, it is preferable that the direction of bending of the ridge purlin is oriented in the same way as the direction of bending of one of the eaves purlins, parallel to the rafters. Another perspective is to fold the ridge purlin perpendicularly downwards in relation to the folding frame in its unfolded form. However, when this frame is unfolded, the ridge run collides with the ground.

Any other orientation of the folded ridge purlin as described above is disadvantageous due to the fact that the ends of the folded ridge purlin would extend beyond the dimensions of the folded frame and thus would require additional space in addition to the space occupied by the folded frame itself.

The purpose of the present invention is essentially to eliminate the disadvantages inherent in the prior art.

The essence of the invention

This goal is achieved by creating a folding frame for a tent, containing portal frames containing rafters connected to the ridge part of the said frame using pin connections, and posts connected to the rafters using pin connections, wherein the portal frames are connected in a row by purlins, wherein the purlins , containing ridge purlins and cornice purlins, are connected to the portal frames using pin connections and also contain a pin connection located along their length, characterized in that at least the ridge

- 1 046250 The purlin is installed with the possibility of rotation around an axis perpendicular to the axis of the pin connection of the purlin and the portal frame.

The rotary fastening of the purlin is preferably made with an element limiting the position of the purlin. When the frame is folded, this limiting element fixes the purlin in a given position and prevents its unintentional, unwanted rotation in the folded frame.

The limiting element is preferably made in the form of a protrusion having a cylindrical surface, which is located on the pin connection section connected to the ridge part of the portal frame, and the axis of the cylindrical surface coincides with the axis of the rotary fastening of the purlin, and the cylindrical surface contains at least one flat surface, wherein the ridge part contains a shaped groove having a round part for receiving the cylindrical surface of the protrusion and a linear part for installing the flat surface of the protrusion after the purlin has been rotated in the rotary fastening, and the linear part is located under the round part when the folding frame is in the unfolded state.

The limiting element can also be made in the form of an end stop located in the rotary fastening on the pin connection section connected to the ridge part of the portal frame. This end stop fits into the rotary mount with two surfaces, into which, when the purlin is rotated, the side surfaces of the housing abut in the area of the pin connection connected to the ridge part of the portal frame. Thus, these surfaces form an end stop for the side surfaces of the housing in the pin connection area associated with the ridge portion of the portal frame. In the unfolded state of the frame, the rotation of the purlin can be blocked using a fastening pin provided in the rotary fastening of the purlin and passing into the body of the ridge part of the portal frame.

The pin connection of the rafter and the post is preferably made with a fastening pin, which passes through the pin connection in the direction of the axis of rotation of this connection and moves directionally in the pin connection, located in an arcuate groove passing around the axis of rotation of the pin connection, and in one end position of the pin connection corresponding position of the post and rafter being extended, the fastening pin may slide in the groove that is located at the end of the arcuate groove, deviating from the bending direction of the arcuate groove.

To prevent the fastening pin from slipping out of the pin joint, the outer portions of said joint preferably comprise only a groove which is located at the end of the arcuate groove deviating from the bending direction of the arcuate groove, the width of said groove being less than the width of the arcuate groove, and the groove extending from the arcuate groove into the inner part pin connection. In addition, at its ends the fastening pin has a smaller diameter for a groove having a smaller width.

Brief description of drawings

The following is a detailed description of the invention with reference to the accompanying drawings, in which:

fig. 1 schematically shows a folding frame according to the invention;

fig. 2 schematically shows a folding frame according to the invention for a mansard roof;

fig. 3 schematically shows an example of an embodiment of a rotary fastening of a ridge girder, which has an element limiting the position of the girder;

fig. 4 schematically shows an example of an embodiment of a rotary fastening of a ridge purlin, which has another element limiting the position of the purlin;

fig. 5 schematically shows an example of an embodiment of a pin connection between a rafter and a post using a fastening pin;

fig. 6 schematically shows the folding frame shown in FIG. 1, first partially folded and then fully folded;

fig. 7 schematically shows the folding frame shown in FIG. 2, first partially folded and then fully folded.

Examples of implementations

The invention is described in detail below using examples of embodiments and with reference to the accompanying drawings. The arrows shown in the drawings show the possible directions of rotation, movement or folding of individual parts of the folding frame 1.

In the example embodiment of the folding frame according to FIG. 1 folding frame 1 contains portal frames 3, which are connected in a row using purlins 6. Portal frames 3 contain rafters 4 connected to the ridge part 2 of the portal frame 3 using pin connections 9, and racks 5 connected to rafters 4 using pin connections connections 10. Portal frames 3 are connected in a row using purlins 6. Purlins 6 contain ridge purlins 7 and cornice purlins 8. Purlins 6 are connected to portal frames 3 using pin connections 11. About

- 2 046250 the purlins also contain a pin connection 12 located along their length, which allows this purlin to be folded when the frame 1 is folded. The pin connections 12 are preferably made with a known fastening element in the form of a pin, a retainer, a sliding sleeve, or the like. The ridge girder 6, 7 is installed with the ability to rotate around an axis perpendicular to the axis of the pin connection 11 of the girder 6 and the portal frame 3. The pin connections 9, 10, 11, 12 are uniaxial pin connections. The axes of the pin connections 11 of the eaves purlins 8 and the rafters 4 are perpendicular to the longitudinal direction of the rafters 4, so that these eaves purlins 8 are actually parallel to the rafters 4 in the folded state of the frame 1.

In the example embodiment according to FIG. 2 the rotary fastening of the purlin 6 for this example of the ridge purlin 7 is ensured by the fact that one section of the pin connection 11 is rotatably connected to the ridge part 2 of the portal frame 3. The specified rotary fastening can be made using a bolt, hinge or any other known axial connection that allows swivel connection.

When folding or unfolding the frame, the rotary fastening of the purlin 6, 7 allows you to rotate the purlin as much as necessary to avoid collision with the ground or other parts of the frame 1, and also allows you to eliminate any protrusion of the purlin 6, 7 from the frame 1 when this frame is in the folded state .

The range of rotation of the purlin 6, 7 around an axis perpendicular to the axis of the pin connection 11 of the purlin 6, 7 and the portal frame 3, i.e. around the own longitudinal axis of the run 6, 7, can be unlimited.

It is advisable, especially in order to avoid unwanted unintentional rotation of the purlin 6, 7 in the folded frame 1, to perform a rotary fastening of the purlin 6, 7 with a limiting element 13 limiting the position of the specified purlin.

To easily secure the purlin 6, 7 to prevent rotation when the frame 1 is unfolded, the rotary fastening of this purlin preferably has a limiting element 13, made according to the embodiment shown in the example shown in FIG. 3.

The limiting element 13 according to FIG. 3 is made in the form of a protrusion having a cylindrical surface 14. This protrusion is located on the section of the pin connection 11 connected to the ridge part 2 of the portal frame 3. The axis of the cylindrical surface 14 coincides with the axis of the rotary fastening of the purlin 7. The cylindrical surface 14 contains at least one flat surface 15, in this example, contains two flat parallel surfaces 15. In this case, the ridge part 2 contains a shaped groove 16, having a rounded part 17 for receiving the cylindrical surface 14 of the protrusion and a linear part 18 for installing a flat surface 15 (in this example, two flat surfaces 15 protrusion) when turning purlin 7 in the rotary mount. The linear part 18 is located under the round part 17, in relation to the folding frame 1 in the unfolded state. When unfolding the frame 1, made with a limiting element 13 according to FIG. 3, the purlin can freely rotate around its longitudinal axis thanks to the rounded part 17 of the shaped groove 16. To fix the position of the purlin 6, 7, it is enough to align the flat surface 15, in this example, two flat parallel surfaces 15, with the linear parts 18 of the shaped groove 18. Thus Thus, the protrusion located on the section of the pin connection 11, connected to the ridge part of the portal frame 3, enters the linear parts 18 of the shaped groove 16, while preventing the rotation of the girder 6, 7. Since the linear part 18 of the shaped groove 16 is located under the round part 17 of the specified groove, girder 6, 7 is held in a fixed position virtually due to gravity.

When folding the frame 1, made with a limiting element 13 according to FIG. 3, the operations are actually performed in reverse order, i.e. the limiting element 13 is pulled out from the linear parts 18 of the shaped groove 16 into the rounded part 17 of the said groove, after which the girder 6, 7 can be rotated as necessary during the folding of the frame 1.

Another example of the implementation of the limiting element 13 for the run 6, 7 is shown in Fig. 4. In this case, the limiting element 13 is made in the form of an end stop located in a rotary mount in the area of the pin connection 11 connected to the ridge part 2 of the portal frame 3. This end stop enters the rotary mount with two perpendicular surfaces 22, into which when turning the purlin 6, 7 rest perpendicular to the surface of the body in the area of the pin connection 11 associated with the ridge part 2. In this case, in the unfolded state of the frame, the rotation of the purlin 6, 7 can be prevented using the fastening pin 23, located in the rotary fastening of the purlin 6, 7 and into the body of the ridge part 2.

According to the embodiment shown in FIG. 5, the pin connection 10 of the rafter 4 and the post 5 is preferably made with a fastening pin 19, which passes through the pin connection 10 in the direction of the axis of rotation of this pin connection. The fastening pin 19 moves directionally in the pin connection 10, moving in an arcuate groove 20 around the axis of rotation of this pin connection. In one final position of the pin connection 10, which corresponds to the unfolded position of the post 5 and rafters 4, the fastening pin 19 can

- 3 046250 thread in the groove 21, which is located at the end of the arcuate groove 20, deviating from the bending direction of the arcuate groove 20.

To prevent the fastening pin 19 from slipping out of the pin connection 10, the outer portions of said connection preferably only include a groove 21, the width of this groove being less than the width of the arcuate groove 20, the groove 21 leading from the arcuate groove 21 into the interior of the pin connection 10. In addition, At its ends, the fastening pin 19 has a smaller diameter for the groove 21, which has a smaller width. Thus, the outer parts of the pin connection 10 hold the fastening pin 19, preventing it from slipping out.

When the uprights 5 are unfolded, the fastening pin 19 is guided by the outer parts of the pin connection 10 into an arcuate groove 20 located in the inner part of the said joint, and when the upright 5 reaches a fully extended position, the fastening pin 19 is displaced, either by gravity or manually groove 21, deviating from the direction of bending of the arcuate groove 20, thereby blocking the rotation of the pin connection 10.

When folding the posts 5, the fastening pin 19 is displaced from the groove 21 into the arcuate groove 20, thereby disengaging the pin connection 10. Then the fastening pin 19 is guided by the outer parts of the pin connection 10 into the arcuate groove 20 located in the inner part of the specified pin connection.

In the example embodiment of the folding tent frame 1 shown in FIG. 2, the folding frame has the same arrangement as described above for the example shown in FIG. 1, except that the rafters 4 contain an additional pin connection 24 located along their length and providing an inclination of the rafters 4 to form a mansard-type roof. If in this embodiment the purlin 6 is located in the place where the roof changes its slope, i.e. is another, cornice purlin 8, the distance between the individual portal frames 3 is important. If the length of the purlins 6, 8 is twice or more the length of the adjacent rafter 4, then when folding the frame 1, as in the case of the ridge purlin 7 , an intersection occurs in space. In this case, in this position, it is preferable to provide a rotary fastening of the purlin 6, 8, similar to the rotary fastening of the ridge purlin 7 described above.

Similarly, a limiting element 13 can also be provided, it being clear that the ridge part 2 of the portal frame 3 also contains a pin connection 24 or is located in the area of the said connection, while in the embodiment of the ridge part 2 described above, the pin connection can consist of two pin connections, each for one rafter.

As an illustration, FIG. 6 shows a folding frame 1 constructed in accordance with the example described above with reference to FIG. 1, and in Fig. 7 shows a folding frame 1 constructed in accordance with the example described above with reference to FIG. 2, first partially folded and then fully folded.

With regard to the rigidity of the structure, it is preferable to fold the posts 5 inside the portal frame 3. With this configuration, the weight of the structure rests on the supporting surfaces formed in the pin connection 10 of the rafter 4 and the post, which prevents shear forces acting on the fastening element, which ensures the correct angle between the post 5 and rafter 4. If the racks 5 are folded inside the portal frame 3, it is preferable to use the ridge part 2, made with two pin connections 9, i.e. with a separate pin connection 9 for each rafter 4. Thus, between the folded rafters 4 the necessary space is provided for the racks bent inward.

To ensure perfect compactness of the folded frame 1, it is preferable to provide posts as well as rafters 4 having the same cross-sectional shape with two different dimensions, which are inserted into one another and are protected from unintentional slipping by means of built-in fastening elements, preferably in the form of spring-loaded locking pins. When the frame 1 is unfolded, the posts 5 and rafters 4 are extended to their full working length, while when the frame 1 is folded, the posts 5 and rafters 4 are shortened to the length required for transportation, obtaining the most compact folded frame 1.

The above examples of embodiments described with reference to the accompanying drawings are illustrative and do not limit the essence of the present invention solely to these specific examples.

The folding frame 1 for a tent, made according to the invention, is a compact device of structural components that provides economical transportation when folded, simple and quick unfolding without the need for external connecting components and the need to separate the frame 1 into several parts. When unfolded, the frame 1 is protected from unintentional folding and ensures the transfer of forces in the directions in which the frame is most susceptible to operational loads.

The compactness of the frame 1 is also ensured by the fact that the frame should not have any separate fasteners or parts, which increases reliability during operation, since

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Claims (6)

the likelihood of losing any fastening or fixing material or supporting parts of the frame 1, and this is especially important when it is used by military or police units and rescue services as command, residential, medical, triage, decontamination and other tents that require rapid deployment and reliability during operation. CLAIM 1. Folding frame (1) for a tent, which contains portal frames (3), containing rafters (4), connected to the ridge part (2, 24) of the portal frame (3) using pin connections (9), and a stand (5 ), connected to the rafters (4) using pin connections (10), and the portal frames (3) are connected in a row using purlins (6), and the purlins (6) containing ridge purlins (7) and eaves purlins (8) , are connected to the portal frames (3) using pin connections (11), and the cornice purlins (8) contain a pin connection (12) located along their length for folding the cornice purlins (8), characterized in that at least the ridge the purlin (7) is installed with the possibility of rotation around an axis perpendicular to the axis of the pin connection (11) of the specified purlin (7) and the portal frame (3), and the specified rotary fastening of the ridge purlin (7) is ensured by the fact that one section of the pin connection (11) is pivotally connected to the ridge portion (2) of the portal frame (3), and the ridge girder (7) contains a pin connection (12) located along its length for folding the ridge girder (7). 2. Folding frame (1) according to claim 1, characterized in that the rotary fastening of the purlin (6, 7, 8) contains a limiting element (13) limiting the position of the specified purlin (6, 7, 8). 3. Folding frame (1) according to claim 2, characterized in that the limiting element (13) is made in the form of a protrusion with a cylindrical surface (14), which is located on the pin connection section (11) connected to the ridge part (2, 24 ) of the portal frame (3), and the axis of the cylindrical surface (14) coincides with the axis of the rotary fastening of the purlin (6, 7, 8), and the cylindrical surface (14) contains at least one flat surface (15), while the ridge part ( 2, 24) has a shaped groove (16) having a rounded part (17) for receiving the cylindrical surface (14) of the protrusion and a linear part (18) for installing the flat surface (15) of the protrusion after turning the purlin (7) in the rotary mount, and the linear part (18) is located under the round part (17) when the folding frame (1) is in the unfolded state. 4. Folding frame (1) according to claim 2, characterized in that the limiting element (13) is made in the form of an end stop in a rotary mount on the pin connection section (11) connected to the ridge part (2, 24) of the portal frame (3 ), wherein said end stop engages the rotary fastener with two surfaces (22) that form an end stop for the side surfaces of the housing in the pin connection section (11) associated with the ridge portion (2, 24), wherein the rotary fastener includes a fastening pin (23 ), passing into the body of the ridge part (2, 24) of the portal frame (3). 5. Folding frame (1) according to claims 1-3 or 4, characterized in that the pin connection (10) of the rafters (4) and the rack (5) contains a fastening pin (19), which passes through the pin connection (10) in direction of the axis of rotation of the specified connection and moves in a directional manner in the pin connection (10) in the arcuate groove (20) around the axis of rotation of the specified connection, and in one final position of the pin connection (10), corresponding to the unfolded position of the rack (5) and rafters (4) , the fastening pin (19) can slide in the groove (21), which is located at the end of the arc-shaped groove (20), deviating from the bending direction of the said groove. 6. Folding frame (1) according to claim 5, characterized in that the outer parts of said pin connection (10) contain only said groove (21), wherein the width of said groove is less than the width of the arcuate groove (20), and the groove (21) leads from said groove into the interior of the pin connection (10), the diameter of the fastening pin (19) being reduced at its ends for the groove (21) having a smaller width. -