KR20160053752A - A ponding-water-proof high-dome tent - Google Patents

Abstract

The present invention is to provide a ponding prevention high-dome tent comprising a vertical pole, a center pole, and a support roof set. A fixed center combining sheet is inserted to the bottom end of the center pole, and a combining pin and a spring are prepared between the center pole and the fixed center combining sheet. A slender type slot or a cotter hole is cut at the bottom end of the center pole and a blind hole is prepared on the fixed center combining sheet. The blind hole has the cotter hole or the slender type slot, and the combining pin combines the center pole to the fixed center combining sheet through the slender type slot and the cotter hole. The spring is arranged in the blind hole, one end of the spring is pressurized to the bottom end of the center pole, and the support rod set is combined to a ponding prevention rod set. Since the slender type slot is cut on a side wall of the center pole or the blind hole and the spring is prepared between the center pole and the fixed center combining sheet, the spring is compressed and uplift force is applied to the center pole when the tent is unfolded. Thus, the present invention prevents an unsupported portion of waterproof cloth from sagging or water from being accumulated in the portion of the waterproof cloth.

Description

{A PONDING-WATER-PROOF HIGH-DOME TENT}

The present invention relates to outdoor leisure products, and more particularly to a high dome tent preventing biting.

As an outdoor leisure product, tents are widely used in various situations. A typical tent frame is made up of a number of vertical poles that are associated with a roof bar that generally forms a roof support. Tents employing such a tent frame are generally quite complex in structure and require a large number of pole sets to support the tarpaulin. Therefore, such a tent is expensive to manufacture and difficult to install. Moreover, the general tent tarpaulin is only supported by four vertical pawls and a central pole or roof bar, and is easy to pivot due to gravity action. Particularly, when using a high dome tent during rainfall, the waterproofing film is more likely to be axially deformed in the central region due to the rainwater effect, and thus water can accumulate in the waterproofing film. This results in an additional load on the tent frame, so that the tent can be splashed to the user when removing the tent.

Chinese Patent No. ZL201310429420.7 discloses a folding tent roof structure including a tent frame and a roof bar. The frame consists of a vertical pole, a loop pole and a diagonal strut. A fixed seat is provided at the upper end of the vertical pawl, and a sliding seat is provided at the vertical pawl to slide along the pawl. The first end of the loop pivot is pivoted to the fixed seat, the first end of the diagonal strut is pivoted to the sliding seat, the second end of the diagonal strut is pivoted to the roof pole, Folded or unfolded by moving it downward. The tent frame is provided with a slide passage, the first end of the roof bar being pivoted to a diagonal strut, the roof bar being movable relative to the slide passage and the second end of the roof bar being moved away from the slide passage, The loop bar can be folded or unfolded, and the roof bar can be folded or unfolded due to folding or unfolding of the tent frame. In such a tent structure there is an additional roof bar to support the tarpaulin, but the rainwater still accumulates between the vertical pawl and the center seat. Therefore, the tent structure can not completely solve the problem of accumulation of water, and further improvement is required.

It is an object of the present invention to provide a bitumen preventing high dome tent wherein the tarpaulin can be stretched during use to avoid tarps or water accumulation.

To achieve the above object, the present invention adopts the following technical solution.

The high dome tent for preventing biting and tipping comprises a vertical pole, a central pole erected in a vertical direction at the top of the tent to support the tarp, and a set of support rods used to engage the central pole and the vertical pole in the bar upright unit . Wherein a central engaging seat is provided at a lower end of the central pawl and a central sliding engaging seat capable of sliding along the central pawl is provided on the main body of the central pawl, Are each coupled to a set of support rods.

Wherein a coupling pin and a spring are provided between the central pole and the side fixed anchorage sheet and the elongated slot or cotter hole is cut at the lower end of the central pole, And a blind hole for use with the central pawl, wherein a cotter hole corresponding to the elongated slot of the central pole is provided close to the opening of the blind hole, or a elongated slot corresponding to the cotter hole of the central pole, Wherein the length of the elongated slot in the side wall of the central pole or the blind hole is the same as the length of the central pole and the engaging pin is cut in the side wall of the hole, And the spring is disposed in the blind hole It said one end portion of the spring is pressed against the bottom end of the center pole, and the other end is pressed against the bottom of the blind hole.

The support bar set is also engaged with the barb set.

As an improvement to the present invention, the support bar set comprises at least one pair of engagement rod units that are mutually articulated, and wherein the engagement rod unit has two mutually articulated < RTI ID = 0.0 > Wherein one of the coupling rods of the coupling rod unit coupled to the center pole is articulated to the center pole through the sliding coupling sheet and the other coupling rod is coupled to the center pole through the fixed central coupling seat, One of the mating rods of the mating rod unit hinged to the center pole is hinged to the vertical pawl via the sliding mating sheet for the vertical pole, Is hinged to the vertical pawl via the fixed central engagement seat for the pawl.

As an improvement to the present invention, the barb set includes a barb support rod. Wherein one end of the rod is hinged to the coupling rod of the pair of coupling rod units and the other end is directed upward while the body of the waterproof foam supporting rod is connected to the same And the sliding link is hinged to the coupling rod engaged with the sliding link and is slidable along the body of the detent rod coupled with the sliding link.

As an improvement to the present invention, the sliding link is hinged to a metal stepped piece that is secured to the engagement rod engaging the sliding link.

As an improvement to the present invention, the barb set includes a loop supporting bar, a moving loop bar and a connecting piece, one end of the loop supporting bar being hinged to one end of the moving loop bar, The other end or body of the bar is hinged to the coupling rod unit coupled to the vertical pole, one end of the coupling piece is hinged to the body of the roof bar and the other end is hinged to the three- And is hinged to the coupling rod.

As an improvement to the present invention, the mobile loop bar has a first straight rod and a second straight rod, one end of which is mutually coupled through a rotating joint. The end portions of the first rectilinear rod and the second rectilinear rod have a stopper for limiting the rotation angle.

As an improvement to the present invention, the vertical pole and / or loop bar is telescopic.

As an improvement to the invention, the center pole is hollow and a plug is provided at the lower end of the center pole to prevent the spring from being inserted into the center pole.

As an improvement to the present invention, each pair of adjacent vertical poles is coupled through a set of side rods, each vertical pole is coupled to a respective set of side rods via diagonal struts, and the side rods are " And a pair of mutually articulated side rods that take a shape.

By adopting this technical solution, the present invention has the following advantages:

Because the elongate slot is cut at the center pole or the side wall of the blind hole and a spring is provided between the center pole and the fixed center engagement seat, when the tent is unfolded, the spring is compressed to apply an upward force to the center pole, An upward force is applied to the tarpaulin to tension the tarpaulin so that deflection or water accumulation does not easily occur in the tarpaulin area that is not supported.

By providing a set of support rods between the vertical pawls and the central pawl, the pressure sustained by the central pawl can be distributed to the four vertical pawls to achieve structural stability. Further, since the support bar set is made up of a plurality of engagement rod units each including two engagement rods supported by each other, the structural stability of the tent frame is assured.

In addition, by providing a set of barbs, the barrier can be further tensioned. Moreover, the loop pawl can support the defoamer to avoid deflection of the defoamer or water accumulation.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of a high-dome tent preventing frost in the first embodiment of the present invention. Fig.
2 is a schematic diagram showing how a center pole is combined in a first embodiment of the present invention.
3 is a partially exploded view showing a coupling structure of a center pole in the first embodiment of the present invention.
4 is a cross-sectional view showing a coupling structure of a center pole in the first embodiment of the present invention.
5 is an enlarged view of a portion A of Fig.
FIG. 6 is a schematic view showing an undersea high dome tent in a second embodiment of the present invention. FIG.
7 is an enlarged view of a portion B of Fig.
8 is an enlarged view of part C of Fig.
Figure 9 is a schematic diagram showing a folded loop support bar in a second embodiment of the present invention.
10 is a schematic diagram showing how a center pole is combined in a second embodiment of the present invention.
11 is an exploded view showing a coupling structure of a center pole in a second embodiment of the present invention.
12 is a cross-sectional view showing a coupling structure of a center pole in a second embodiment of the present invention.
13 is a schematic view showing how the biting prevention assembly is combined in the third embodiment of the present invention.
Figure 14 is a schematic diagram showing how a biting prevention assembly is assembled in a fourth embodiment of the present invention.
15 is a schematic view showing how the bagging prevention assembly is folded in the fourth embodiment of the present invention.
Figure 16 is a schematic view showing a fully folded barb prevention assembly in a fourth embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The invention is further illustrated by way of example with reference to the accompanying drawings, in which: Fig.

Example 1

As shown in FIG. 1, the fishing tackle high dome tent of the present embodiment is made up of a tarpaulin (not shown in the figure), four vertical pawls 1 and one central pawl 2. The upper ends of the vertical pawls 1 and the central pawls 2 are in direct contact with the tarpaulin and thus support the tarpaulins. Of course, the number of vertical poles 1 may be three, five, or more, and may be selected according to actual needs. The vertical pole 1 is a telescopic pole and the center pole 2 is coupled to each vertical pole 1 via a set of connecting rods 3. [ Two adjacent vertical pawls 1 are coupled through a set of side rods 4 and each vertical pawl 1 is also joined to each set of side rods 4 via a diagonal strut.

As shown in Figures 1 and 2, when the tent frame is unfolded, the central pawl 2 is disposed vertically at the top of the tent. A central engaging seat 6 is fitted on the bottom of the center pole 2 and a central sliding link 7 is fitted on the body of the center pole 2 so as to slide along the central pole. A support piece (8) used to support the tent is fitted. When the tent frame is unfolded, the vertical pawls 1 can be arranged in a vertical direction or obliquely at a preset angle according to actual demand. A three-way sliding engagement sheet (10) is fitted on the bottom of the vertical pawl (1), and a three-way sliding engagement sheet (10) 11 are inserted. The three-way sliding engagement sheet 11 is fitted with a stopper 11a for preventing the three-way sliding engagement sheet from sliding downward along the vertical pawl 1 when the tent frame unfolds. Since the central sliding link 7, the foot piece 9, the three-directional fixed engagement sheet 10, the three-way sliding engagement seat 11, and the stopper 11a are both available in the prior art, I do not explain.

2 to 4, the engagement pin 12 and the spring 13 are sandwiched between the center pole 2 and the fixed center engaging seat 6, and the engagement pin 12 is connected to a common pin or screw And the spring 13 is a compression spring. A cotter hole 2a is also cut at the bottom end of the central pole 2 and the fixed central engaging seat 6 is used with a link for use with the tie rod 3b of the tent and with the central pole 2 The blind hole 6b is formed. The position of the coupling rod 3b is described in the following paragraphs. The coupling rod hinge 6a is articulated to the coupling rod 3b. Certain articulating methods are commonly used for tents and are not described in detail here. The elongated slot 6c is cut at the side wall of the blind hole 6b. The long side of the elongated slot 6c is in the same direction as the length of the center pole 2, that is, the same direction as the depth of the blind hole 6c. The engaging pin 12 engages the central pawl 2 with the fixed central engaging seat 6 through the elongated slot 6c and the cotter hole 2a. The spring 13 is disposed in the blind hole 6b, one end of which is pressed against the lower end of the center pole 2 and the other end is pressed against the bottom of the blind hole 6b. Considering that the rod typically used for a tent is a hollow rod, the central pole may also be a hollow pole. It is preferable to fit the inner plug 14 to the lower end of the center pole 2 in order to avoid the problem caused by the spring 13 inserted into the central pole.

The position of the elongated slot 6c can also be exchanged with the position of the cotter hole 2a in this embodiment, i.e. the elongated slot is cut at the central pole 2 and the cotter hole is inserted into the side wall 6b of the blind hole 6b It is permissible to cut in the < / RTI > However, since the central pivot 2 is generally made of metal and the fixed central engaging seat 6 with the blind hole 6b is made of plastic, the cost of cutting the elongated slot in the side wall of the blind hole 6b Is much lower than the cost of cutting the elongated slot at the center pole (2).

When the tent is unfolded, the deflector applies a downward force to the center pole 2 and the center pole 2 transmits its downward force to the compression spring 13. [ Therefore, the compression spring 13 is always compressed and applies an upward elastic force to the center pawl 2, so that the waterproof pawl supported by the center pawl 2 is always pulled.

As shown in Fig. 1, the support bar set 3 may comprise one or more pairs of interdigitally coupled bond bar units 3a. Each support rod set includes two pairs of engagement rod units 3a in this embodiment. The joining rod unit 3a includes two mutually articulated joining rods 3b that assume an "X" shape when unfolded. In each support rod set 3, one of the engagement rods 3b of the engagement rod unit 3a coupled to the center pole 2 is hinged to the center pole 2 via the central sliding link 7, And the other coupling rods 3b are hinged to the center pole 2 through the coupling rod hinge 6a of the fixed central coupling seat 6. One of the coupling rods 3b of the coupling rod unit 3a coupled to the vertical pole 1 is hinged to the vertical pole 1 via the three-way sliding link 11 and the other is hinged to the vertical pole 1, Is hingedly coupled to the vertical pole (1) through the hinge (10).

5, the tent described in the present embodiment is provided with a set of fishing-tingling rods comprising a loop supporting bar 15, a moving roof bar 160 and a joining piece 17. In this embodiment, The loop support bar 15 is preferably a telescopic bar. One end of the loop support bar 15 is articulated to one end of the movable loop bar 16 and the other end is completely free The other end or body of the mobile loop bar 16 is articulatedly coupled to a mating rod unit 3a associated with the vertical pole 1. The mobility loop bar 16 is coupled to the two mating rod units 3a It is preferably articulated to the hinge position of the rod 3b.

One end of the coupling piece 17 is articulated to the body of the loop support bar 15 and the other end is joined to the three-directional fixed engagement sheet 10, And is articulatedly coupled to a coupling rod 3b that is articulated to the coupling rod 3b. After the parts are articulated, the engagement piece 17 can be rotated about the corresponding pivot point with respect to the loop support bar 15 or the engagement rod 3b.

As shown in Fig. 1, the side bar set 4 is composed of two mutually articulated side rods 4a which take a "-" shape when unfolded. The articulated engagement end of the side bar 4a is hinged to the vertical pawl 1 via the three-directional fixed engagement sheet 10. One end of the diagonal strut 5 is coupled to the vertical pole 1 via the three-way sliding link 11 and the other end is hinged to the side rod 4a hinged to the same vertical pole 1. [ The vertical pole 1, the side rods 4a and the diagonal struts 5 form a triangle and each vertical pole 1 has two side rods 4a and two diagonal struts 5, Lt; / RTI >

To unfold the tent frame, the user simply separates the vertical pawl 1 into an upright position, slides the three-way sliding link 11 upward toward a predetermined position, The stopper 11a may be used to fix the foot piece 9 to the vertical pawl 1, and then the foot piece 9 may be fixed to the ground. Of course, a tarpaulin should be disposed on the tent frame and be supported by the supporting piece 8, the vertical pole 1 and the roof bar. In addition, the user must press the tarp downward from the center pole 2 as much as possible so that the spring 13 is sufficiently compressed. After the tent frame is unfolded, the user may manually move the loop bar 16 to move the loop bar 15 to the proper position. When folding the tent frame, the user can manually actuate the mobile loop bar.

The method of folding a tent in this embodiment is similar to a method of folding a general tent, and will not be described in detail here.

Example 2

The difference between the present embodiment and the first embodiment is the structure of the movable roof bar in the barb prevention bar set as well as the structure and the joining method of the center pole 2 and the fixed central joining sheet 6.

As shown in Figs. 6 to 8, the mobile loop bar 18 of this embodiment has a first straight rod 18a and a second straight rod 18b, one end of which is coupled to each other via a rotational joint. The end portions of the first rectilinear rod 18a and the second rectilinear rod 18b are provided with a restricting portion 18c for restricting the rotation angle of the first rectilinear rod 18a with respect to the second rectilinear rod 18b.

The end of the first straight bar 18a which is not engaged with the second straight bar 18b is articulated to the bar bar unit 3a which is engaged with the vertical bar 1. Preferably, Are jointly coupled to the coupling rod unit 3a at positions where they are articulated to each other. The end of the second straight bar 18b that is not engaged with the first straight bar 18a is articulated to the loop bar 15. [

As shown in Figs. 7 and 8, after the tent is unfolded, the user rotates the first straight rod 18a and the second straight rod 18b so that the two rods are aligned with each other. At this point, The limit stop 18c starts to restrict the position of the second rectilinear rod 18b to prevent further rotation of the second rectilinear rod 18b. The loop bar 15 is operated by the second rectilinear rod 18b and unfolded accordingly.

9, before folding the tent, the user retracts the roof bar 15 to the shortest length, and then moves the first straight rod 18a to the second straight rod 18a so that the two rods coincide with each other, 18b. The loop bar 15 is operated by the second rectilinear rod 18b and unfolded accordingly.

10 to 12, in this embodiment, the elongated slot 2b is cut at the bottom end of the center pole 2, and the length of the elongated slot 2b is equal to the length of the center pole 2 And the fixed central joining seat 6a has a joining rod 3b of the tent and a use link 6a for use and a blind hole 6b for use with the center pole 2. [ Similar to the first embodiment, the coupling rod hinge 6a is hinged to the coupling rod 3b and is not described in detail here. A cotter hole 6d is provided close to the opening of the blind hole 6b. The engaging pin 12 engages the central pawl 2 with the fixed central engaging seat 6 through the elongated slot 2b and the cotter hole 6d. The spring 13 is disposed in the blind hole 6b, one end of which is pressed against the lower end of the center pole 2 and the other end is pressed against the bottom of the blind hole 6b.

The method of folding and unfolding a tent having a loop in this embodiment is the same as that of the first embodiment, and therefore, will not be described in detail here.

Example 3

As shown in Fig. 13, the difference between the present embodiment and the first embodiment is a set of barbs. The barb set of the present embodiment includes a defogger support rod 19. The waterproofing foam supporting rod 19 is arranged in the vertical direction when it is unfolded and its length can be determined according to actual demand and one end of the waterproofing foam supporting rod 19 is connected to the connecting rod 3b And the body of the defogger support rod 19 is coupled to the other engagement rod 3b of the same engagement rod unit 3a through the sliding link 20. The other end of the waterproof post support rod 19 is hinged to the other engagement rod 3b. The sliding link 20 is hinged to the defogger support rod 19 in a sliding manner and hinged to the coupling rod 3b.

As a link commonly used in a tent, the sliding link 20 is articulated to the coupling rod 3b via a cotter and can be rotated around the cotter. The defogger support rod 19 is inserted into the sliding link 20 so that the sliding link 20 slides along the body of the defogger support rod 19 to form a sliding link.

The upper end of the waterproofing foil supporting rod 19 can support the waterproofing foil to prevent deflection of the waterproofing foil and accumulation of water caused by lack of support of the waterproofing foil between the vertical pole 1 and the center pole 2. [ In this embodiment, only one defogger support rod is fitted to the support bar set 3. However, the user can provide more than one defogger support rods 19 to one support rosette 3 depending on the actual situation.

The method of folding and unfolding a tent with a loop in this embodiment is similar to that of the first embodiment, and thus will not be described in detail here.

Example 4

14, the difference between the present embodiment and the first embodiment is that the method of combining the sliding link 20 with the coupling rod 3b in this embodiment is different from the method described in the first embodiment It is a point.

In this embodiment, the sliding link 20 is hinged to the metal stepped piece 21. A groove is formed between the stepped portion of the metallic stepped piece 21 and the sliding link 20 and the engaging rod 3b engaged with the sliding link 20 is disposed in the groove structure, Piece 21 so that the sliding link 20 is indirectly hinged to the connecting rod 3b.

The method of unfolding and folding the tent in this embodiment is the same as the method described in the first embodiment. 15, the rotation axis of the sliding link 20 with respect to the metal stepped piece 21 is located on the connecting rod 3b (see Fig. 15). However, since the metal stepped piece 21 is used in this embodiment, Do not coincide with the rotation axis of the waterproof foam supporting rod 19. The tarpaulin support rods 19 may not interfere with the coupling rods 3b, and the fully folded tent occupies a smaller space. The state of the fully folded tent frame is as shown in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The above is a detailed description of the present invention, with reference to the accompanying drawings. However, the embodiment is not limited to the above description. Various modifications may be made to the invention by those skilled in the art. For example, the telescopic vertical pole 1 may be replaced by a two-section foldable vertical pole, or the spring 13 of the embodiment may be replaced by another resilient component, such a change being within the scope of the claims of the present invention have.

In this figure, the deflector and some of the coupling pins are omitted and the reference numerals have the following meanings:
1: vertical pole 2; Central pole
2a: Coater hole 2b: Long slot
3: Supporting rod set 3a: Coupling rod unit
3b: Coupling rod 4: Slide rod set
4a: side rods 5: diagonal strut
6: Fixed central joining seat 6a: Coupling rod hinge
6b: blind hole 6c: elongated slot
6d: Coater hole 7: Central sliding link
8: Support piece 9: Foot piece
10: 3-way fixed connecting seat 11: 3-way sliding link
11a: stopper 12: engaging pin
13: spring 14: inner plug
15: Loop bar 16: Moving loop bar
17: coupling piece 18: moving loop bar
18a: first straight rod 18b: second straight rod
18c: limit stop 19: defogger support rod
20; Sliding link 21: metal stepped piece

Claims (9)

As a high dome tent to prevent biting,
A vertical pole, a vertical pole vertically upstanding from the top of the tent to support the tarpaulin, and a set of support rods used to join the central pole and the vertical pole in a bar stitching unit, And a central sliding coupling seat capable of sliding along the main body of the central pole is installed on the main body of the central pole, and the fixed central engaging seat and the central sliding engaging seat are fixed to the supporting rod set Respectively;
Wherein a coupling pin and a spring are provided between the center pole and the side fixed stationary centering sheet and the elongated slot or cotter hole is cut at the lower end of the central pole, And a blind hole for use with the central pawl, wherein a cotter hole corresponding to the elongated slot of the central pole is provided close to the opening of the blind hole, or a tapered shape corresponding to the cotter hole of the center pole Wherein a slot is cut at the side wall of the blind hole and the length of the elongated slot in the side wall of the central pole or the blind hole is the same as the length of the central pole, And engages with said stationary center engagement seat through a corresponding cotter hole, said spring engaging said blind hole Disposed on, and pressed against the one end the bottom end of the center pole of the spring, the other end is pressed against the bottom of the blind hole;
Wherein the set of support rods is also coupled to the set of barbs. ≪ RTI ID = 0.0 > 15. < / RTI > The method according to claim 1,
Wherein the support bar set is formed of at least one pair of engagement rod units that are mutually articulated, and the engagement rod unit is composed of two mutually articulated engagement rods having an "X" shape when unfolded, One of the engaging rods of the engaging rod unit coupled with the central pole is articulated to the central pole through the sliding engaging sheet and the other engaging rod is hinged to the central pole through the fixed central engaging seat, One of the engagement rods of the engagement rod unit engaging with the vertical pawl is articulated to the vertical pawl via the sliding engagement sheet for vertical pawls and the other engagement rod is engaged with the fixed central engagement seat for a vertical pole Is hingedly coupled to the vertical pole through the hinges. 3. The method of claim 2,
And the other end of the rod is hinged to the coupling rod of the pair of coupling rod units, and the other end of the rod is hinged to the upper side of the coupling rod of the pair of coupling rod units, Wherein the main body of the waterproof foam supporting rod is coupled to another engaging rod of the same engaging rod unit via a sliding link, the sliding link is hinged to the engaging rod engaged with the sliding link, Wherein the tent can be slid along the body of the anti-drip rod. The method of claim 3,
Wherein the sliding link is hinged to a metallic stepped piece secured to the coupling rod coupled with the sliding link. 3. The method of claim 2,
Wherein the loop bar is hinged to one end of the loop bar and the other end or body of the loop bar is hinged to one end of the loop bar, And the other end of the coupling piece is hinged to the main body of the roof bar and the other end is hinged to the coupling rod hinged to the three- High dome tent to prevent biting. 6. The method of claim 5,
Wherein the movable loop bar includes a first linear rod and a second linear rod whose ends are mutually coupled through a rotary joint, and the end portions of the first linear rod and the second linear rod include a stopper for limiting a rotation angle High dome tent to prevent biting. The method according to claim 5 or 6,
Wherein the vertical pole and / or roof bar is a telescopic bar. 7. The method according to any one of claims 1 to 6,
Wherein the central pawl is hollow and a plug is fitted to the lower end of the central pawl to prevent the spring from being inserted into the central pawl. 7. The method according to any one of claims 1 to 6,
Each pair of adjacent vertical pawls is coupled through a set of side rods and each vertical pole is coupled to a respective set of side rods through a diagonal strut, the set of side rods having a pair of interlocking joints "- & And the side rods are connected to each other.

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