Bellows-type folding tent

Abstract

To secure workability at the time of assembly and transportation while improving the rigidity of a tent at the time of installation and stabilizing its posture.SOLUTION: A bellows-type folding tent 1 is provided with a plurality of portal frame bodies 2 and an expansion / contraction connection mechanism 4 which connects the adjacent portal frame bodies 2 to each other and is expandable / contractible in a connected state, wherein the portal frame body 2 has a ceiling part 5 and a pair of strut parts 6 foldably connected to both ends of the ceiling part 5, and each strut part 6 has a first strut 7 and a second strut 8 extending in parallel to each other, in the bellows-type folding tent in which both struts 7, 8 are mutually connected by one or a plurality of strut connecting members 9, either one strut 7 has a wheel 11 at a lower end, and the other strut 8 and the strut connecting member 9 are both detachably constituted.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a bellows-type folding tent. [Background technology]

[0002] Conventionally, as this type of tent, a bellows-type folding tent has been known that includes multiple gate-shaped frame bodies each having a ceiling part and a pair of left and right support parts integrally therewith, and an expansion and contraction mechanism that connects the multiple gate-shaped frame bodies so that they can expand and contract in the front-rear direction (see, for example, Patent Document 1). The lower ends of the support parts of this tent are provided with wheels that can touch the ground, so that the tent can be easily and smoothly expanded and contracted.

[0003] Also, as this type of tent, a bellows-type folding tent has been proposed in which each support section is composed of two supports, with wheels provided at the lower end of the outer support and a jack base provided at the lower end of the inner support (see Patent Document 2). By configuring each support section with two supports in this way, the rigidity of the support sections and therefore the tent can be increased. Also, by providing wheels at the lower end of one support and a jack base at the lower end of the other support, it is possible to adjust the height of each gate-shaped frame body that forms the skeleton of the tent while ensuring smooth extension and retraction of the tent. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-207021 A [Patent Document 2] JP 2023-97571 A Summary of the Invention [Problem to be solved by the invention]

[0005] In this type of tent, by configuring each support part of the portal frame body with two supports, the rigidity of the tent can be improved, and the position of the tent can be stabilized by adjusting the height. On the other hand, the structure of the support parts and the portal frame body becomes more complicated compared to when each support part is configured with a single support, which may hinder smooth folding or unfolding. In addition, the weight of the tent increases with the number of supports, which may worsen the workability when loading and unloading the tent onto and from a truck.

[0006] In view of the above circumstances, the technical problem to be solved by the present invention is to provide a bellows-type folding tent that improves the rigidity and stabilizes the posture of the tent when set up, while also ensuring ease of assembly and transportation. [Means for solving the problem]

[0007] The above-mentioned problems are solved by the accordion-type folding tent of the present invention. That is, this tent is characterized in that it comprises a plurality of portal frame bodies and an expandable and contractible connecting mechanism that connects adjacent portal frame bodies to each other and is expandable and contractible in a connected state, the portal frame bodies have a ceiling section and a pair of support columns connected to both ends of the ceiling section in a foldable manner, each support column has a first support column and a second support column extending parallel to each other, both supports are connected to each other by one or more support column connecting members, and in the accordion-type folding tent, one of the supports has a wheel at its lower end, and the other support column and the support column connecting member are both configured to be detachable.

[0008] Thus, in the bellows-type folding tent according to the present invention, a wheel is provided at the lower end of either one of the pair of columns constituting the column portion, and the other column and the column connecting member are both configured to be detachable. By connecting the pair of columns with the column connecting member, the rigidity of the bellows-type folding tent can be improved and the posture during installation can be stabilized. Further, during transportation or assembly, the column connecting member can be removed, and then, by removing the other column from the ceiling portion, the structure of the column portion can be simplified. Therefore, for example, it becomes possible to easily perform the folding operation or the deployment operation of the column portion. Further, at this time, since a wheel is provided at the lower end of one column connected to the ceiling portion, the folding operation or the deployment operation of the column portion accompanying the lifting of the ceiling portion can be smoothly performed. As described above, according to the bellows-type folding tent according to the present invention, while improving the rigidity of the tent during installation and stabilizing the posture, it is possible to ensure workability during assembly and transportation.

[0009] Further, the bellows-type folding tent according to the present invention may further include a seat body fixed to the ground surface by driving an anchor, and a tension adjusting mechanism that connects the lowermost column connecting member among one or a plurality of column connecting members and the seat body and adjusts the tension acting on each other.

[0010] In this way, by adopting a structure in which the column connecting member that connects the columns at the lowermost position among one or a plurality of column connecting members and the seat body fixed to the ground surface by driving an anchor are connected by a tension adjusting mechanism, the column connecting member can be firmly fixed. Therefore, it becomes possible to further improve the rigidity of each column and thus the tent and to stabilize the posture. Further, by connecting the seat body fixed to the ground by driving an anchor and the column connecting member with a tension adjusting mechanism, after grounding and fixing the seat body and lifting the portal frame body to deploy the other column that can be folded, the tension between the column connecting member and the seat body can be increased to a predetermined magnitude, so there is no risk of inhibiting good workability during assembly.

[0011] In addition, in the accordion-type folding tent of the present invention, the first and second pillars may each be provided with an engaging recess, and the pillar connecting member may be provided with a pair of engaging protrusions that can engage with the engaging recesses by an engaging operation from the upper end side to the lower end side of each pillar.

[0012] According to the column connection structure of the above configuration, columns can be connected to each other more easily. In addition, since the mating protrusions and mating recesses can be mated by mating operation from the upper end side to the lower end side of each column, the mating state can be further strengthened by applying a predetermined tension to the column connection member by the tension adjustment mechanism. In addition, the mating state can be easily released by hitting from below to above, so there is no problem in terms of workability for removal.

[0013] Furthermore, in the accordion-type tent according to the present invention, when a pair of mating protrusions are provided, the pair of mating protrusions may be wedge-shaped and configured to be able to form a wedge engagement with the mating protrusions.

[0014] According to the above-mentioned configuration, the connection between the support pole connecting member and each support pole can be strengthened. Also, if the support pole connecting member is a wedge-type connection, the fitted state (wedge-type engagement state) can be more easily released by hitting the support pole connecting member from below.

[0015] In addition, in the accordion-type folding tent of the present invention, when the accordion-type folding tent has a pair of mating protrusions, an engagement portion capable of engaging with the tension adjustment mechanism in the vertical direction may be provided at the intermediate position of the pair of mating protrusions of the pole connecting member.

[0016] When the pole fitting structure has the above-mentioned configuration, the tension adjustment mechanism applies a predetermined tension vertically downward, so that the tension or its reaction force acts evenly on the connection (fitting) between each pole and the pole connecting member. This makes it possible to prevent the horizontal component of tension from acting on the pole connecting member, and to stabilize the posture of each pole, and therefore the posture of the tent.

[0017] In the accordion-type folding tent according to the present invention, when the accordion-type folding tent has a pair of mating projections, the pole connecting member may be in the shape of a plate.

[0018] By making the pole connecting member plate-shaped, the pair of fitting protrusions that form part of the pole connecting member and the engaging portion with the tension adjustment mechanism can be made thin-walled. This allows the front-rear position of the point of application of tension at the engaging portion to be kept constant, so even with this configuration, it is possible to apply tension vertically downward to prevent the horizontal component of tension from acting on the pole connecting member, thereby stabilizing the position of the tent.

[0019] In the accordion-type folding tent according to the present invention, the tension adjustment mechanism may be constituted by a turnbuckle.

[0020] By configuring the tension adjustment mechanism in this way, first the seat body and the support column connecting member are connected with a turnbuckle, and then tension can be applied to the seat body and the support column connecting member by twisting the body of the turnbuckle in a specified direction. This makes it easy to install and remove, and after installation, tension can be applied to the seat body and the support column connecting member with a simple operation.

[0021] In addition, in the accordion-type folding tent of the present invention, the seat body has a seat body main body that is fixed to the ground surface and an engaged part that can engage with an engaging part provided on the tension adjustment mechanism, and the engaged part may be configured to be movable relative to the seat body.

[0022] By configuring the seat body as described above, it is possible to provide play between the seat body and the tension adjustment mechanism, which makes it easier to attach the tension adjustment mechanism to a seat body that is fixed to the ground by driving in anchors. Effect of the Invention

[0023] As described above, the accordion-type folding tent of the present invention makes it possible to improve the rigidity of the tent and stabilize its posture when set up, while ensuring ease of assembly and transportation. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a front view of an accordion-type folding tent according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a side view of the accordion-type folding tent shown in FIG. 1 as seen from the left and right direction, showing the tent in a fully extended state. [Diagram 3] FIG. 2 is a side view of the accordion-type folding tent shown in FIG. 1 as viewed from the left and right direction, showing a state in which the interlocking telescopic mechanism is maximally contracted and the independent telescopic mechanism is extended. [Figure 4] FIG. 2 is a side view of the accordion-type folding tent shown in FIG. 1 as viewed from the left and right direction, showing a state in which both the interlocking telescopic mechanism and the independent telescopic mechanism are maximally contracted. [Diagram 5] 2 is a front view showing the accordion-type folding tent shown in FIG. 1 with its poles folded inward. [Figure 6] 2 is a front view of the essential parts of the accordion-type folding tent shown in FIG. 1 with the second pole removed. [Figure 7] FIG. 2 is an enlarged front view of the essential parts of the accordion-type folding tent shown in FIG. 1, showing the state in which the second support pole is attached to the ceiling part and the support pole connecting member is removed. [Figure 8] 2 is an enlarged front view of a main portion of the accordion-type folding tent shown in FIG. 1, showing a state in which a first pole and a second pole are connected to each other by a pole connecting member. FIG. [Figure 9] FIG. 2 is an enlarged front view of the essential parts of the accordion-type folding tent shown in FIG. 1, showing the state in which the pole connecting member and the seat body are connected via a tension adjustment mechanism. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] The following describes the details of a bellows-type folding tent according to one embodiment of the present invention with reference to the drawings. In the following description, the contraction direction of the bellows-type tent is defined as the front-rear direction, the vertical direction as the up-down direction, and the direction perpendicular to the front-rear direction and the up-down direction as the left-right direction.

[0026] Fig. 1 is a front view of a bellows-type folding tent 1 according to this embodiment, seen from the front-rear direction, and Fig. 2 and Fig. 3 are side views of the bellows-type folding tent 1, seen from the left-right direction. As shown in Fig. 1, this bellows-type folding tent 1 mainly comprises multiple gate-shaped frames 2, a tent sheet 3, and an expandable connecting mechanism 4.

[0027] The gate frame 2 has a ceiling section 5 and a pair of left and right support columns 6, 6 connected to both ends of the ceiling section 5. Of these, the ceiling section 5 has an arc-shaped roof material 5a and a beam material 5b connecting both ends of the roof material 5a. The roof material 5a is formed, for example, from a metal round pipe, and the beam material 5b is formed, for example, from a metal square pipe. The roof material 5a can have any structure including a known structure, and may be, for example, in a mountain shape.

[0028] A pair of left and right support pillars 6, 6 are foldably connected to the ceiling 5. In this embodiment, as shown in Fig. 5, each support pillar 6 is foldable inward (towards the center in the left-right direction). Each support pillar 6 has a first support pillar 7 and a second support pillar 8 extending parallel to each other, and both support pillars 7, 8 are configured to be connectable to each other by one or more support pillar connecting members 9. Each support pillar 7, 8 is formed of, for example, a metal square pipe. The connecting structure of the support pillars 7, 8 will be described later.

[0029] 2, the telescopic connecting mechanism 4 is configured to connect adjacent gate frame bodies 2, 2 in the front-rear direction and to be able to expand and contract in the connected state. In this embodiment, the telescopic connecting mechanism 4 is composed of an interlocking telescopic mechanism 4A that is able to expand and contract three or more adjacent gate frame bodies 2 in the front-rear direction in an interlocking manner to expand and contract the distance between them, and an independent telescopic mechanism 4B that expands and contracts two adjacent gate frame bodies 2 independently of the interlocking telescopic mechanism 4A to expand and contract the distance between them.

[0030] In the interlocking telescopic mechanism 4A and the independent telescopic mechanism 4B, the lower ends of the link rods 4a and 4b connected in an X-shape are rotatably connected to the support pillars 6 (here, the first support pillars 7 located on the outside) of the adjacent portal frame bodies 2, and the upper ends of the link rods 4a and 4b are rotatably connected to the support pillars 6 so that they can move up and down. The lower ends of the link rods 4a and 4b rotate around the connecting shaft, and the upper ends of the link rods 4a and 4b move up and down while rotating along the support pillars 6, so that the adjacent portal frame bodies 2 move in parallel in a direction approaching or separating. As a result, the adjacent portal frame bodies 2 can expand and expand as shown in FIG. 2, and can contract and contract as shown in FIG. 3. The interlocking telescopic mechanism 4A and the independent telescopic mechanism 4B may use telescopic mechanisms such as a lazy tongue mechanism or a pantograph mechanism.

[0031] In addition, in this interlocking telescopic mechanism 4A, an eyebolt 4c is rotatably connected to the upper ends of the link rods 4a and 4b as shown in FIG. 6. The eyebolt 4c is inserted into a guide rod 4d arranged along the longitudinal direction of the support portion 6. In this case, the guide rod 4d is fixed to the first support 7. The upper end of the link rod 4b of the X-shaped link 4A1 and the upper end of the link rod 4a of the X-shaped link 4A2 are rotatably connected via the eyebolt 4c. The upper end of the link rod 4b of the X-shaped link 4A2 and the upper end of the link rod 4a of the X-shaped link 4A3 are also rotatably connected via the eyebolt 4c, and the upper end of the link rod 4b of the X-shaped link 4A3 and the upper end of the link rod 4a of the X-shaped link 4A4 are also rotatably connected via the eyebolt 4c. The lower end of the link rod 4a of the X-shaped link 4A1 and the lower end of the link rod 4b of the X-shaped link 4A2 are rotatably connected via a connecting shaft 4e fixed to the support 6 (here, the first support 7). The lower end of the link rod 4a of the X-shaped link 4A2 and the lower end of the link rod 4b of the X-shaped link 4A3 are also rotatably connected via the connecting shaft 4e, and the lower end of the link rod 4a of the X-shaped link 4A3 and the lower end of the link rod 4b of the X-shaped link 4A4 are also rotatably connected via the connecting shaft 4e. The interlocking telescopic mechanism 4A has the above-mentioned configuration, so that the X-shaped links 4A1, 4A2, 4A3, and 4A4 can be interlocked and extended.

[0032] The X-shaped linked link rods 4a, 4b of the independent telescopic mechanism 4B are not connected to the adjacent linked link rods 4a, 4b of the interlocking telescopic mechanism 4A. That is, as shown in Fig. 3, the lower ends of the link rods 4a, 4b of the independent telescopic mechanism 4B are rotatably connected to a flange 4f fixed to the support part 6 (here, the first support 7), and the upper ends of the link rods 4a, 4b are connected to the support part 6 (here, the first support 7) via a movable shaft 4i inserted in a vertical groove 4h of a guide plate 4g fixed to the support part 6 (here, the first support 7) so as to be vertically movable and rotatable.

[0033] With the above configuration, the X-shaped links of the link rods 4a, 4b of the independent telescopic mechanism 4B can expand and contract independently of the X-shaped links 4A1-4A4 of the interlocking telescopic mechanism 4A, as shown in Figs. 3 and 4 (see Figs. 3 and 4). In the illustrated example, the independent telescopic mechanism 4B is provided on both the left and right sides of the interlocking telescopic mechanism 4A, but the independent telescopic mechanism 4B may be provided on either the left or right side of the interlocking telescopic mechanism 4A. Alternatively, a pair of interlocking telescopic mechanisms 4A may be provided on both the left and right sides of the independent telescopic mechanism 4B, in a reversed arrangement to that in the illustrated example.

[0034] In this embodiment, a pair of claw insertion parts 10 for inserting the fork tines of a forklift (not shown) are provided at predetermined positions in the left-right direction of the beam material 5b constituting each ceiling part 5. In the illustrated example, the claw insertion part 10 is configured by welding and fixing a U-shaped member made of a metal rod or metal plate to the upper part of the beam material 5b in the reverse direction (inverted U-shape). Note that while it is preferable to provide the claw insertion part 10 at the upper part of the beam material 5b, the claw insertion part 10 can also be fixed by welding a U-shaped member to the lower part of the beam material 5b. Of course, the claw insertion part 10 can take any shape as long as it can be supported from below by the fork tines.

[0035] The claw insertion parts 10 are preferably provided at positions where the gate frame body 2 is supported horizontally when the fork tines of a forklift are inserted to lift the gate frame body 2. In the illustrated example, the claw insertion parts 10 are fixed at positions on both sides equidistant in the left-right direction from the central vertical member 5c that connects the roof material 5a and the beam material 5b.

[0036] Next, the support column 6 and the connecting structure between the supports 7 and 8 will be described in detail.

[0037] Of the pair of pillars 7, 8, the pillar located on one of the left and right sides (here, the first pillar 7 located on the outside) is foldably connected to the ceiling section 5. Meanwhile, the pillar located on the other of the left and right sides (here, the second pillar 8 located on the inside) is detachably connected to the ceiling section 5. In addition, one or more pillar connecting members 9 are each detachably attached to the first pillar 7 and the second pillar 8, thereby making it possible to connect the first pillar 7 and the second pillar 8.

[0038] In this case, a wheel 11 is provided at the lower end of the foldable first support 7. The wheel 11 is preferably one having a stopper function. The wheel 11 is preferably one configured to be rotatable around a vertical axis, such as a caster.

[0039] In this embodiment, the downward extension 5c is fixed to both ends of the ceiling 5, and the upper end of the first support 7 is connected to the downward extension 5c so that the first support 7 can rotate around the connecting shaft 5d. In this case, it is sufficient that the rotation range of the first support 7 is determined so that it can be folded at least toward the inside. In addition to the connecting shaft 5d, a bolt 5f may be inserted between the downward extension 5c and the first support 7 and tightened with a nut (not shown) to non-rotatably connect the upper end of the first support 7 to the downward extension 5c, and the bolt 5f may be removed to rotatably connect the upper end of the first support 7 to the downward extension 5c.

[0040] A pair of clamping plates 5e, 5e extending downward are provided on the beam 5b of the ceiling portion 5, and a fixing plate 8a extending upward from the upper end of the second support 8 is inserted between this pair of guide plates 5e, 5e and fastened with a bolt 5f, so that the upper end of the second support 8 can be removably fixed to the beam 5b via the fixing plate 8a (see the enlarged view in Figure 1).

[0041] In this embodiment, a jack base 12 is provided as a height adjustment mechanism at the lower end of the second support pillar 8 (see FIG. 7). The bolt portion 12a of the jack base 12 is inserted into the inside of the lower end of the second support pillar 8, and with the seat plate 12c in contact with the ground surface G (surface contact), the second support pillar 8 is raised and lowered by rotating the nut portion 12b with the handle to move it up and down, thereby making it possible to adjust the height position of the second support pillar 8.

[0042] The column connecting member 9 has a pair of mating protrusions 14a, 14b that can be mated with mating recesses 13a, 13b provided on the first column 7 and the second column 8. In this case, the pair of mating protrusions 14a, 14b can be mated with the corresponding mating recesses 13a, 13b by a mating operation from the upper end side to the lower end side of each column 7, 8 of the column connecting member 9.

[0043] In this embodiment, the column connecting member 9 is plate-shaped, and a pair of fitting protrusions 14a, 14b that form part of the column connecting member 9 are formed to have a thin-walled shape. In this case, each of the fitting recesses 13a, 13b is shaped like a slit extending in the left-right and up-down directions, and the left-right interval is set to a predetermined size so that the pair of fitting protrusions 14a, 14b can be inserted from above (see FIG. 8).

[0044] In this embodiment, the fitting protrusions 14a, 14b are wedge-shaped, and therefore, for example, by applying a strike from above to introduce the fitting protrusions 14a, 14b into the slit-shaped fitting recesses 13a, 13b and causing the fitting protrusions 14a, 14b to bite into the upper edges of the corresponding fitting recesses 13a, 13b, the pillar connecting member 9 can be firmly connected to the pillars 7, 8 via the fitting recesses 13a, 13b.

[0045] Furthermore, an engagement hole 14c is provided in the column connecting member 9 at a left-right intermediate position between the pair of fitting protrusions 14a, 14b, as an engagement portion that can vertically engage with the tension adjustment mechanism 15. The engagement hole 14c is provided in the column connecting member 9 in a downward protrusion 9a that is provided between the pair of fitting protrusions 14a, 14b.

[0046] The tension adjustment mechanism 15 is configured to connect the base body 17, which is fixed to the ground surface G by driving in the anchor 16, and the column connecting member 9, and to adjust the magnitude of the tension acting on the column connecting member 9 and the base body 17. In this embodiment, the tension adjustment mechanism 15 is configured with a turnbuckle 18 (see FIG. 9). The turnbuckle 18 has a body 18a, and a first screw portion 18b and a second screw portion 18c that move toward or away from each other as the body 18a rotates around its axis. Hook portions 18b1 and 18c1 are provided at the tips of the respective screw portions 18b and 18c, and for example, the first hook portion 18b1 can be hooked into the engagement hole 14c of the column connecting member 9 to connect the column connecting member 9 and the turnbuckle 18.

[0047] The seat body 17 has a seat body main body 17a that is fixed to the ground surface G by driving in the anchor 16, and a connecting ring 17b as an engaged part that can be engaged with a second hook part 18c1 of a turnbuckle 18 that constitutes the tension adjustment mechanism 15. In this embodiment, a part of the connecting ring 17b is a straight part 17b1, and the connecting ring 17b is supported by the seat body main body 17a so as to be rotatable around a horizontal axis line with the straight part 17b1 as a fulcrum (see FIG. 8).

[0048] In this case, for example, as shown in FIG. 8, the ground fixing position of the base body 17 (base body main body 17a) is set so that the straight portion 17b1, the threaded portions 18b, 18c, and the engagement hole 14c are positioned on the same vertical line.

[0049] The accordion-type folding tent 1 having the above-mentioned configuration is transported to the site where it is to be temporarily installed in a state where it is partially assembled in the factory, and final assembly is performed on-site. In the factory, the multiple gate-shaped frames 2 are contracted as shown in Fig. 4, and the tent sheet 3 is placed over the ceiling part 5 with the support poles 6 folded as shown in Fig. 5. When folding the support poles 6, the second support poles 8 and the support pole connecting members 9 are removed, and only the first support poles 7 are folded inward, thereby contracting the accordion-type folding tent 1 in the vertical direction. In this way, by folding the support poles 6, the ceiling part 5 is lowered, making it easier to stretch the tent sheet 3 over the ceiling part 5.

[0050] With the support pole portions 6 folded as described above and the multiple support pole portions 6 (first support poles 7) in the folded state connected to each other, for example by a connecting device not shown, the accordion-type folding tent 1 is loaded onto the bed of a truck by a forklift (not shown) and transported to the installation site.

[0051] After arriving at the installation site, the accordion-type folding tent 1 with the support poles 6 folded is unloaded from the truck bed. A forklift can be used to unload the tent from the truck bed, or the tent can be hoisted and lowered by a crane.

[0052] Thereafter, when the gate frame 2 is gradually lifted off the ground, the folded first support pillar 7 rotates under its own weight so that the wheels 11 move away from the ceiling 5. Therefore, by gradually lifting up the gate frame 2 with the wheels 11 on the ground, the first support pillar 7 unfolds in the standing direction and stands vertically.

[0053] After the first supports 7 of all the portal frames 2 are set vertically in this way, each pair of portal frames 2 at the front and rear ends are moved in parallel by rolling of the wheels 11, and the interval between the adjacent portal frames 2 connected by the independent telescopic mechanism 4B is widened and extended (see FIG. 4). Then, the horizontal joint member 19 is attached across the adjacent portal frames 2, and the pair of portal frames 2 connected to the link rods 4a, 4b of the independent telescopic mechanism 4B is fixed at a predetermined interval, and the multiple portal frames 2 connected to the link rods 4a, 4b of the interlocking telescopic mechanism 4A are then widened to a predetermined interval. This causes the bellows-type folding tent 1 to be widened to the size when it is set up (see FIG. 3). At this point, only the first supports 7 are standing vertically, and the second supports 8 have not yet been attached (see FIG. 6).

[0054] Therefore, in the state where the accordion-type folding tent 1 is expanded to a predetermined size as described above, the second support pole 8 is attached to the ceiling part 5. After being attached to the ceiling part 5, the second support pole 8 is raised and lowered by rotating the nut part 12b with the handle of the jack base 12 provided at the lower end of the second support pole 8 to move it up and down, thereby adjusting the height position of the second support pole 8. At this time, by reducing the height dimension of the jack base 12 in advance, it becomes easier to attach the second support pole 8 to the ceiling part 5. At the time when the second support pole 8 is attached, both the first support pole 7 and the second support pole 8 are in a vertically standing state, but the support pole connecting member 9 has not yet been attached. Also, the turnbuckle 18 constituting the tension adjustment mechanism 15 has not yet been attached (see FIG. 7).

[0055] Therefore, after the second support 8 is attached, the first support 7 and the second support 8 are connected by the support connecting member 9. Specifically, as shown in FIG. 8, a pair of fitting protrusions 14a, 14b provided on both the left and right sides of the support connecting member 9 are inserted from above into the corresponding fitting recesses 13a, 13b, and tapped downward to bring the fitting protrusions 14a, 14b into a fitting recess 13a, 13b (in this embodiment, a wedge engagement state). As a result, the first support 7 and the second support 8 are mutually connected via the support connecting member 9. In the illustrated example, two support connecting members 9 are attached to each support part 6, and the first support 7 and the second support 8 are connected at two points in the vertical direction (see FIG. 1).

[0056] In addition, the seat body 17a is fixed to the ground surface G by driving in the anchor 16 so that the straight portion 17b1 of the connecting ring 17b is positioned directly below (vertically below) the engagement hole 14c of the column connecting member 9. After the seat body 17a is fixed to the ground and the column connecting member 9 is attached, the first hook portion 18b1 of the turnbuckle 18 constituting the tension adjustment mechanism 15 is hooked to the engagement hole 14c of the column connecting member 9, and the second hook portion 18c1 of the turnbuckle 18 is hooked to the connection ring 17b of the seat body 17, thereby connecting the column connecting member 9 and the seat body 17. Thereafter, the body portion 18a of the turnbuckle 18 is rotated to move the first screw portion 18b and the second screw portion 18c in a direction to approach each other, thereby applying a predetermined tension to the column connecting member 9 and the seat body 17, respectively. As a result, the pole connecting members 9 are firmly connected to the base body 17 which is fixed to the ground. In this manner, the assembly and installation of the accordion-type folding tent 1 is completed.

[0057] As described above, in the accordion-type folding tent 1 according to this embodiment, the pair of supports 7, 8 are connected by the support connecting member 9, thereby improving the rigidity of the accordion-type folding tent 1 and stabilizing the posture when set up. In addition, when transporting or assembling, the support connecting member 9 is removed, and then the second support 8 is removed from the ceiling part 5, thereby simplifying the structure of the support part 6. This makes it possible to easily fold or unfold the support part 6. In addition, at this time, since the wheels 11 are provided at the lower end of the first support 7 connected to the ceiling part 5, the folding or unfolding of the support part 6 accompanying the lifting of the ceiling part 5 can be smoothly performed. As described above, according to the accordion-type folding tent 1 according to this embodiment, it is possible to improve the rigidity and stabilize the posture when set up, while ensuring workability when assembled and transported.

[0058] In addition, in this embodiment, the support connecting member 9 that connects the supports 7, 8 at the lowest position among one or more support connecting members 9 and the base body 17 that is fixed to the ground surface G by driving the anchor 16 is connected by the tension adjustment mechanism 15, so that the support connecting member 9 can be firmly fixed. This makes it possible to further improve the rigidity of each support 7, 8 and thus the bellows-type folding tent 1 and stabilize its posture. In addition, by connecting the base body 17 that is fixed to the ground by driving the anchor 16 to the support connecting member 9 by the tension adjustment mechanism 15, the base body 17 can be fixed to the ground, and the tension between the support connecting member 9 and the base body 17 can be increased to a predetermined level after the gate-shaped frame body 2 is lifted to unfold the foldable first support 7, so there is no risk of impeding good workability during assembly.

[0059] In the accordion-type folding tent 1 according to the present embodiment, the first and second poles 7 and 8 are provided with mating recesses 13a and 13b, respectively, and the pole connecting member 9 is provided with a pair of mating protrusions 14a and 14b that can be mated with the mating recesses 13a and 13b by mating from the upper end side to the lower end side of each pole 7 and 8, so that the poles 7 and 8 can be connected to each other more easily. In addition, since the mating protrusions 14a and 14b can be mated with the mating recesses 13a and 13b by mating from the upper end side to the lower end side of each pole 7 and 8, the mating state can be made stronger by applying a predetermined tension to the pole connecting member 9 by the tension adjustment mechanism 15. In addition, the mating state can be easily released by hitting from below to above, so there is no problem in terms of workability in removing the poles.

[0060] Although one embodiment of the present invention has been described above, the accordion-type folding tent according to the present invention is not limited to the above-mentioned exemplary configuration, and various modifications are possible within the scope of the present invention. [Explanation of symbols]

[0061] 1. Accordion-style folding tent 2 Gate frame 3 Tent Sheet 4 Telescopic connection mechanism 4A interlocking telescopic mechanism 4B Independent telescoping mechanism 5 Ceiling 5b Beam material 6 Pillar section 7 First pillar 8 Second pillar 9 Pillar connecting member 10 Claw insertion part 11 wheels 12 Jack Base 13a, 13b Fitting recess 14a, 14b Fitting protrusions 14c Engaged hole 15 Tension adjustment mechanism 16 Anka 17 Seat 17a Seat body 17b Connecting ring 18 Turnbuckle

Claims

1. The system includes a plurality of gate frame bodies, and an extension / retraction connecting mechanism that connects adjacent gate frame bodies to each other and is extendable and contractable in a connected state, The gate frame body has a ceiling portion and a pair of support pillars foldably connected to both ends of the ceiling portion, In a bellows-type folding tent, each of the support poles has a first support pole and a second support pole extending parallel to each other, and the first and second support poles are connected to each other by one or more support pole connecting members, A bellows-type folding tent, characterized in that either one of the poles has a wheel at its lower end, and the other pole and the pole connecting member are both configured to be detachable.

2. A base body that is fixed to the ground by driving anchors into the ground; 2. The accordion-type folding tent according to claim 1, further comprising a tension adjustment mechanism that connects the lowest one of the one or more pole connecting members to the base and adjusts the tension acting between them.

3. The first support and the second support are each provided with a fitting recess, 3. The accordion-type folding tent according to claim 2, wherein the pole connecting member is provided with a pair of mating protrusions that can be mated with the mating recesses by a mating operation from the upper end side to the lower end side of each pole.

4. The accordion-type folding tent according to claim 3, wherein the pair of fitting protrusions are wedge-shaped and configured to be able to form a wedge engagement between the pair of fitting protrusions.

5. 4. The accordion-type folding tent according to claim 3, wherein the pole connecting member has an engaged portion at a middle position of the pair of fitting protrusions, the engaged portion being vertically engageable with an engaging portion of the tension adjusting mechanism.

6. 4. The accordion-type folding tent according to claim 3, wherein the pole connecting member is in the shape of a plate.

7. 3. The accordion-type folding tent according to claim 2, wherein the tension adjustment mechanism comprises a turnbuckle.

8. The accordion-type folding tent according to claim 2, wherein the seat has a seat body fixed to the ground surface and an engaged portion that can engage with an engaging portion provided on the tension adjustment mechanism, and the engaged portion is configured to be movable relative to the seat body.

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