SK289331B6 - Folding tent frame - Google Patents

Abstract

The folding frame (1) of the tent comprises transverse beams (3) including rafters (4) connected to the top part (2, 24) of the transverse beam (3) by articulated joints (9) and webs (5) connected to the rafters (4) by articulated joints (10), where the transverse beams (3) are connected in a row one after the other by longitudinal beams (6), where the longitudinal beams (6), including ridge beams (7) and eaves beams (8), are connected to the transverse beams (3) by articulated joints (11) and the longitudinal beams (6) include an articulated joint (12) also along their length, where at least the ridge longitudinal beam (6, 7) is rotatably mounted about an axis perpendicular to the axis of the articulated joint (11) of the longitudinal beam (6, 7) and the transverse beam (3).

Description

Field of technology

The invention relates to a folding tent frame.

State of the art

Folding tent frames with a gable roof are usually made of cross beams that contain rafters and posts, where the rafters are connected to each other and the rafters and posts to each other are connected by hinged joints. The cross beams are then connected in a row by longitudinal beams, usually at or near the hinged joints of the cross beams. Longitudinal beams can be divided into two types. Ridge beams are located at the point where the rafters connect, usually at the top of the tent frame. Eaves beams are located at the point where the rafters transition to the posts or, in the case of a pitched gable roof, also between the rafters at the point where the roof slope breaks.

Cross beams are usually assembled using hinged joints in such a way that at the ridge point, i.e. at the top of the cross beam, the rafters fold towards each other. There are known solutions where the eaves are connected to each other at the top by a single hinged joint or there are also known solutions where each rafter is connected to the top part in a single hinged joint, i.e. each separately in a single hinged joint.

In the unfolded state, the articulated joints are equipped with a mechanical stop, ensuring the correct angle of opening of the rafters. Mechanical securing of the position is usually not necessary due to the prevailing vertical action of forces after the frame is unfolded, since the rafters are supported by their own weight on the stop surfaces in the articulated joint. In the unfolded state of the frame, the uprights are perpendicular to or at an acute angle to the ground. Unlike the rafters, the uprights must be secured after they are unfolded to prevent them from spontaneously folding and the tent frame from falling due to the action of wind or other horizontal forces. Such securing is usually implemented in the form of a locking pin, threaded through the articulated joint of the upright and rafter, through the articulated joint and upright profile, and the like. During folding, the webs, depending on the space between the folded rafters, fold outwards towards the outside of the rafters, inwards towards the inside of the rafters, or are dismantled from the hinge joint, usually by sliding out.

In known folding frame solutions, the longitudinal beams of the frame are connected to the cross beams by a hinge joint and are usually divided. The eaves beams are usually equipped with a hinge joint in the middle and, after folding the frame, their folded parts are next to each other and at the same time between the rafters of adjacent cross beams.

Ridge beams are typically separated into two parts due to spatial conflict with eaves beams in the folded state of the frame. The separated ridge beams are folded in the folded state of the frame to the rafter and the folded eaves beam or, in the case of rafters, where each is connected in its own hinge joint to the top part, the separated ridge beams are placed between the folded rafters. Since the length of one half of the ridge beam is usually greater than the height of the roof part of the frame, and such a separated ridge beam would interfere with the unfolding of the frame, this ridge beam can be shortened telescopically. After the frame is unfolded, the parts of the ridge beam are mechanically connected to each other and possibly secured with a sleeve.

There are known solutions where the ridge beams are also equipped with a hinged joint in the middle, similar to the eaves beams. However, this solution is only advantageous if the sum of the lengths of the folded ridge and folded eaves beams is less than the length of the rafter. In such a case, it is advantageous to orient the direction of folding of the ridge beam in line with the direction of folding of one of the eaves beams, parallel to the rafter. The second option is to fold the ridge beam vertically downwards with respect to the folding frame in the unfolded state. However, here, during the extension of the frame, the ridge beam comes into conflict with the ground.

Any other orientation of the folded ridge beam than that described is disadvantageous because the ends of the folded ridge beam would protrude beyond the overall contour of the folded frame and would thus increase the space requirements of the frame in the folded state.

The aim of this invention is to substantially eliminate the shortcomings of the prior art.

The essence of the invention

The above-mentioned object is achieved by a folding tent frame, which comprises transverse beams including rafters connected to the top part of the transverse beam by articulated joints and webs connected to the rafters by articulated joints, where the transverse beams are connected in a row by longitudinal beams, where the longitudinal beams including ridge and eaves beams are connected to the transverse beams by articulated joints and the longitudinal beams also comprise an articulated joint along their length, the essence of which lies in the fact that at least the ridge longitudinal beam is mounted rotatably about an axis perpendicular to the axis of the articulated joint of the longitudinal beam and the transverse beam.

It is advantageous if the pivoting support of the longitudinal beam is equipped with a position limiting element for the longitudinal beam. This limiting element then secures the longitudinal beam in the desired position when the frame is folded and prevents any unwanted rotation of the longitudinal beam in the folded frame.

Preferably, the limiting element is formed in the form of a projection with a cylindrical surface, which is formed on the part of the hinge joint connected to the top part of the transverse beam, where the axis of the cylindrical surface is coincident with the axis of the rotary bearing of the longitudinal beam and the cylindrical surface comprises at least one planar surface, where the top part comprises a shaped groove with a circular part for the cylindrical surface of the projection and a straight part for inserting the planar surface of the projection after the longitudinal beam is rotated in the rotary bearing, where the straight part is located below the circular part with respect to the folding frame in the unfolded state.

The limiting element can also be formed in the form of a stop in the pivot bearing of the hinge joint part connected to the top part of the cross member. This stop engages in the pivot bearing with two surfaces, against which the surfaces of the body of the hinge joint part connected to the top part of the cross member stop when the longitudinal member rotates. These surfaces thus form a stop for the surfaces of the body of the hinge joint part connected to the top part of the cross member. The longitudinal member can then be secured against rotation in the unfolded position of the frame by a locking pin of the pivot bearing of the longitudinal member, extending into the body of the top part of the cross member. It is advantageous if the articulated joint of the rafter and the web is equipped with a locking pin which passes through the articulated joint in the direction of the axis of rotation of the articulated joint and which is guided in the articulated joint in an arcuate groove around the axis of rotation of the articulated joint, whereby in one extreme position of the articulated joint, which corresponds to the position of the unfolded web and rafter, the locking pin is slidable in a groove which is led out of the arcuate direction of the said arcuate groove at the end of the arcuate groove.

Preferably, to secure the locking pin against falling out of the joint, only a groove is formed on the outer parts of the joint, which is at the end of the arcuate groove outside the direction of the arc of said arcuate groove, this having a smaller width than the arcuate groove and the groove in the inner part of the joint extending therefrom. The locking pin is then formed at the ends with a smaller diameter for the groove with a smaller width.

Overview of images in drawings

The invention is explained in more detail in the accompanying drawings, where:

Fig. 1 - schematically shows a folding tent frame according to the invention;

Fig. 2 - schematically shows a folding tent frame according to the invention with a folded roof;

Fig. 3 - schematically shows an example of an embodiment of a rotary mounting of a ridge longitudinal beam with a position limiting element of the longitudinal beam;

Fig. 4 - schematically shows an example of an embodiment of a rotary mounting of a ridge longitudinal beam with a variant of a longitudinal beam position limiting element;

Fig. 5 - schematically shows an example of an articulated joint of a rafter and a web with a locking pin;

Fig. 6 - schematically shows the folding frame according to Fig. 1 in a partially folded and folded state;

Fig. 7 - schematically shows the folding frame according to Fig. 2 in a partially folded and folded state.

Examples of embodiments of the invention

The invention will be described in more detail below with reference to the accompanying drawings, in which the arrows indicate possible directions of rotation, displacement or folding of individual parts of the folding frame 1. In the exemplary embodiment of the folding frame 1 of the tent, according to FIG. 1, the folding frame 1 comprises transverse beams 3, which are connected in a row by longitudinal beams 6. The transverse beams 3 comprise rafters 4 connected to the top part 2 of the transverse beam 3 by articulated joints 9 and webs 5 connected to the rafters 4 by articulated joints 10. The transverse beams 3 are connected in a row by longitudinal beams 6. The longitudinal beams 6 comprise ridge beams 7 and eaves beams 8. The longitudinal beams 6 are connected to the transverse beams 3 by articulated joints 11. The longitudinal beams 6 also comprise an articulated joint 12 along their length, which allows this longitudinal beam 6 to be folded when the frame 1 is folded. The articulated joints 12 are preferably equipped with a known locking element in the form of a pin, a latch, a sliding sleeve and the like. The ridge longitudinal beam 6, 7 is mounted rotatably about an axis perpendicular to the axis of the hinge joint 11 of the longitudinal beam 6 and the transverse beam 3. The hinge joints 9, 10, 11, 12 are uniaxial. The axes of the hinge joints 11 of the eaves beams 8 and the rafters 4 are perpendicular to the longitudinal direction of the rafters 4, i.e. when the frame 1 is assembled, these eaves beams 8 are essentially parallel to the rafters 4. The rotatable mounting of the longitudinal beam 6, in this example the ridge longitudinal beam 7, is formed in the exemplary embodiment according to Fig. 2 by rotatably mounting a part of the hinge joint 11 connected to the top part 2 of the transverse beam 3. This rotatable connection can be realized by a screw, a pin or other known axial connection enabling a rotatable connection.

The rotatable mounting of the longitudinal beam 6, 7 when folding or unfolding the frame 1 allows the longitudinal beam to be rotated as needed to avoid collision with the ground or other parts of the frame 1 and also allows the longitudinal beam 6, 7 not to protrude from the folded frame 1 after folding the frame 1.

The range of rotation of the longitudinal beam 6, 7, around the axis perpendicular to the axis of the hinge joint 11 of the longitudinal beam 6, 7 and the transverse beam 3, i.e. around the longitudinal axis of the longitudinal beam 6, 7, may be unlimited.

From a practical point of view, especially in order to prevent any unwanted rotation of the longitudinal beam 6, 7 in the folded frame 1, it is advantageous to equip the rotary mounting of the longitudinal beam 6, 7 with a position limiting element 13 of the longitudinal beam 6, 7.

To easily secure the longitudinal beam 6, 7 against rotation in the unfolded position of the frame 1, the rotary mounting of the longitudinal beam 6, 7 is preferably formed by an exemplary embodiment of the limiting element 13 shown in Fig. 3.

The limiting element 13, according to Fig. 3, is formed in the form of a projection with a cylindrical surface 14. This projection is formed on the part of the hinge joint 11 connected to the top part 2 of the transverse beam 3. The axis of the cylindrical surface 14 coincides with the axis of the rotary mounting of the longitudinal beam 7. The cylindrical surface 14 includes at least one flat surface 15, in this example two mutually parallel flat surfaces 15. The top part 2 then includes a shaped groove 16 with a circular part 17 for the cylindrical surface 14 of the projection and a straight part 18 for inserting the flat surface 15, in this example two flat surfaces 15 of the projection after the longitudinal beam 7 has been rotated in the rotary mounting. The straight part 18 is located below the circular part 17 with respect to the folding frame 1 in the unfolded state. When folding the frame 1 with the limiting element 13, according to Fig. 3, the longitudinal beam can rotate freely about its longitudinal axis due to the circular part 17 of the shaped groove 16. To secure the position of the longitudinal beam 6, 7, it is sufficient to align the plane surface 15, in this example two mutually parallel plane surfaces 15, with the straight parts 18 of the shaped groove 16. Thus, the projection formed on the part of the hinge joint 11 connected to the top part 2 of the transverse beam 3 engages in the straight parts 18 of the shaped groove 16, thereby securing the longitudinal beam 6, 7 against rotation. Since the straight part 18 of the shaped groove 16 is located below the circular part 17 of the shaped groove, the transverse beam 6, 7 is held in the secured position practically by gravity.

When unfolding the frame 1 with the limiting element 13, according to Fig. 3, the procedure is practically the opposite, i.e. the limiting element 13 is pushed out of the straight parts 18 of the shaped groove 16 into the circular part 17 of the shaped groove, when it is then possible to rotate the longitudinal beam 6, 7 when folding the frame 1 as needed.

Another exemplary embodiment of the limiting element 13 of the longitudinal beam 6, 7 is shown in Fig. 4. The limiting element 13 is here formed in the form of a stop in the rotary bearing of the articulated joint part 11 connected to the top part 2 of the transverse beam 3. This stop engages in the rotary bearing with two mutually perpendicular surfaces 22, against which the mutually perpendicular surfaces of the body of the articulated joint part 11 connected to the top part 2 stop when the longitudinal beam 6, 7 rotates. The longitudinal beam 6, 7 can then be secured against rotation in the unfolded position of the frame 1 by a locking pin 23 of the rotary bearing of the longitudinal beam 6, 7, passing into the body of the top part 2.

The articulated joint 10 of the rafter 4 and the web 5 is, according to the embodiment shown in Fig. 5, preferably equipped with a locking pin 19, which passes through the articulated joint 10 in the direction of the axis of rotation of the articulated joint 10. The locking pin 19 is guided in the articulated joint 10 in an arcuate groove 20 around the axis of rotation of the articulated joint 10. In one extreme position of the articulated joint 10, which corresponds to the position of the unfolded web 5 and the rafter 4, the locking pin 19 is slidable in a groove 21, which is led out of the direction of the arc of the said arcuate groove 20 at the end of the groove 20.

To secure the locking pin 19 against falling out of the joint 10, preferably only a groove 21 is formed on the outer parts of the joint 10, this having a smaller width than the arcuate groove 20 and the groove 21 extending from it in the inner part of the joint 10. The locking pin 19 is then formed at the ends with a smaller diameter for the groove 21 with a smaller width. In this way, the locking pin 19 is held against falling out by the outer parts of the joint 10.

When unfolding the uprights 5, the locking pin 19 is guided by the outer parts of the hinge joint 10 in the arcuate groove 20 in the inner part of the hinge joint 10 and when the position of the unfolded upright 5 is reached, either by gravity or manually, the locking pin 19 is moved into the groove 21 outside the arc of the arcuate groove 20, thereby securing the hinge joint 10 against rotation.

When folding the poles 5, the locking pin 19 is moved from the groove 21 to the arcuate groove 20, thereby unlocking the hinge joint 10. The locking pin 19 is then guided by the outer parts of the hinge joint 10 in the arcuate groove 20 in the inner part of the hinge joint 10. In the exemplary embodiment of the folding frame 1 of the tent according to Fig. 2, the folding frame has the same arrangement as described in the exemplary embodiment according to Fig. 1, with the difference that the rafters 4 include an additional hinge joint 24 along their length for folding the eaves 4 to create a folded gable roof. If, in such an embodiment, a longitudinal beam 6, i.e. another eaves beam 8, is located at the point of the roof break, the span between the individual transverse beams 3 is decisive. If the length of the longitudinal beams 6, 8 is double or greater than the length of the adjacent rafter 4, a spatial conflict occurs when folding the frame 1, just as it is with the ridge longitudinal beam 7. In such a case, it is advantageous to create an analogous rotary mounting of the longitudinal beam 6, 8 at this position, as described for the rotary mounting of the ridge longitudinal beam 7.

Similarly, a delimiting element 13 can also be formed here, whereby the top part 2 of the cross beam 3 also includes the hinge joint 24 or the region of the hinge joint 24, whereby the hinge joint 24 can also be, for example, in the described embodiment of the top part 2 with two hinge bearings.

Fig. 6 shows, for illustration, a folding frame 1 according to the embodiment described with reference to Fig. 1 and Fig. 7 shows a folding frame 1 according to the embodiment described with reference to Fig. 2 in a partially folded and folded state.

For the strength of the structure, it is advantageous to fold the webs 5 inwards of the cross beam 3. With such a solution, the weight of the system acts on the contact surfaces formed on the joint 10 of the rafter 4 and the web 5 and the risk of shear forces acting on the securing element ensuring the correct angle between the web 5 and the rafter 4 is avoided. For webs 5 folded inwards of the cross beam 3, it is advantageous to use a top part 2 with two joint joints 9, i.e. for each rafter 4 a separate joint joint 9 on the top part 2. This creates the necessary space between the folded rafters 4 for the inwardly folded webs 5.

For complete compactness of the folded frame 1, it is advantageous to make the uprights 5 and the rafters 4 from two different sizes of profiles of similar cross-section, which are inserted into each other and secured against further movement by means of integrated locking elements, preferably in the form of retractable pins pushed out by a spring or a spring. In the unfolded state of the frame 1, the uprights 5 and rafter profiles 4 are extended to the operating length, while in the folded state, the uprights 5 and rafter profiles 4 are retracted to the transport length in order to achieve the best possible compactness of the folded frame 1.

The above-mentioned exemplary embodiments described with reference to the figures in the attached drawings are illustrative and do not limit the essence of the present invention to these specific examples.

The folding frame 1 of the tent according to the present invention represents a compact system of beams enabling economical transport in the folded state, simple and quick unfolding without the need for external connecting components and without disassembling the frame 1 into several parts. In the unfolded state, the frame 1 is secured against tilting and adapted to transfer forces in the directions in which it is most stressed during operation. The compactness of the frame 1 also lies in the fact that it practically does not have to contain any separate securing means or parts, it helps reliability in operation, because the risk of losing the connecting and securing material or supporting parts of the frame 1 is minimized, which is especially important when used in the services of the force and rescue units in the form of command, accommodation, medical, sorting, decontamination and other tents with the need for quick unfolding and reliability in operation.

Claims (6)

1. A folding tent frame (1) comprising cross beams (3) comprising rafters (4) connected to the top part (2, 24) of the cross beam (3) by articulated joints (9) and webs (5) connected to the rafters (4) by articulated joints (10), wherein the cross beams (3) are connected in a row one after the other by longitudinal beams (6), wherein the longitudinal beams (6) comprising ridge beams (7) and eaves beams (8) are connected to the cross beams (3) by articulated joints (11), wherein the eaves beams (8) comprise an articulated joint (12) along their length enabling the eaves beam (8) to be folded, characterised in that at least the ridge longitudinal beam (7) is rotatably mounted about an axis perpendicular to the axis of the articulated joint (11) of the ridge longitudinal beam (7) and the cross beam (3), wherein the rotatable mounting The ridge longitudinal beam (7) is formed by rotatably supporting a hinge joint portion (11) connected to the top portion (2) of the transverse beam (3), and the ridge longitudinal beam (7) includes a hinge joint (12) along its length enabling the ridge longitudinal beam (7) to be folded. 2. Folding tent frame according to claim 1, characterized in that the pivoting support of the longitudinal beam (6, 7, 8) is equipped with a position limiting element (13) for the longitudinal beam (6, 7, 8). 3. Folding tent frame according to claim 2, characterized in that the limiting element (13) is formed in the form of a projection with a cylindrical surface (14), which is formed on the part of the hinge joint (11) connected to the top part (2, 24) of the transverse beam (3), where the axis of the cylindrical surface (14) is coincident with the axis of the rotary mounting of the longitudinal beam (6, 7, 8), and the cylindrical surface (14) includes at least one flat surface (15), where the top part (2, 24) includes a shaped groove (16) with a circular part (17) for the cylindrical surface (14) of the projection and a straight part (18) for inserting the flat surface (15) of the projection after the longitudinal beam (7) is rotated in the rotary mounting, where the straight part (18) is located below the circular part (17) with respect to folding frame (1) in the unfolded state. 4. A folding tent frame according to claim 2, characterized in that the limiting element (13) is formed in the form of a stop in the rotary bearing of the hinge joint part (11) connected to the top part (2, 24) of the cross beam (3), where said stop engages in the rotary bearing with two surfaces (22) which form a stop for the surfaces of the body of the hinge joint part (11) connected to the top part (2, 24), the rotary bearing being equipped with a locking pin (23) extending into the body of the top part (2, 24) of the cross beam (3). 5. A folding tent frame according to claims 1, 2, 3 or 4, characterised in that the joint (10) of the rafter (4) and the web (5) is equipped with a locking pin (19) which passes through the joint (10) in the direction of the axis of rotation of the joint (10) and which is guided in the joint (10) in an arcuate groove (20) around the axis of rotation of the joint (10), whereby in one extreme position of the joint (10), which corresponds to the position of the unfolded web (5) and rafter (4), the locking pin (19) is slidable in a groove (21) which is led out of the arcuate direction of the said arcuate groove (20) at the end of the arcuate groove (20). 6. A folding tent frame according to claim 5, characterized in that only a groove (21) is formed on the outer parts of the hinge joint (10), having a smaller width than the arcuate groove (20) and the groove (21) extending from it in the inner part of the hinge joint (10), and the locking pin (19) is formed at the ends with a smaller diameter for the groove (21) with a smaller width.