Portable hanging chair truss

Abstract

The invention relates to a portable hanging chair truss which comprises a main pipe, an auxiliary leg pipe, an auxiliary leg push-pull pipe, various sliding sleeves and the like and further comprises a first longitudinal folding device, a second longitudinal folding device, a third longitudinal folding device, a fourth longitudinal folding device, a fifth longitudinal folding device, a fourth longitudinal folding device, a seventh longitudinal folding device and a first two-side transverse folding structure. A first transverse folding structure, a second transverse folding structure on the two sides, a third transverse folding structure on the two sides, a fourth transverse folding structure on the two sides, a fifth transverse folding structure on the two sides, an auxiliary leg pipe rigidity structure and a top folding and unfolding device are matched with one another, and different folding and unfolding modes of the portable hanging chair truss with the two sides arranged triangularly in the longitudinal direction are formed. In addition, the longitudinal folding devices and the portable hanging chair truss with the auxiliary leg pipes arranged on the two sides of the main pipe form different folding and unfolding modes, so that the system is rigidly hinged, unfolded and self-locked, unlocking and folding can be facilitated, the packaging size is small after folding, the logistics cost is reduced, and carrying is more convenient.

Description

Technical Field

[0001] The present invention relates to furniture products, belonging to tourism and leisure products for indoor, outdoor and courtyard use, in particular to a portable hanging chair that can be conveniently folded and unfolded and is easy to carry, commonly known as a folding swing chair. Background Art

[0002] In the truss structure of existing portable hanging chairs (also known as folding swing chairs), single-person swing chairs all adopt the expansion and contraction method of a single cross tube. Most swing chairs cannot be self-locked after being unfolded and require additional manual locking or auxiliary locking, resulting in cumbersome folding and unfolding of the swing chairs. In particular, for double or multi-person swing chairs, there is currently no portable hanging chair that can be conveniently folded, unfolded, and carried, and its structure cannot adopt the traditional and single cross tube expansion and contraction method; people hope for a type of truss for a portable hanging chair with a simple structure, smooth folding and unfolding, automatic locking and unlocking, low manufacturing cost, light weight, easy to carry, small volume after folding, good system rigidity after unfolding, and can be used indoors and outdoors. With different fabric structures and styles, it will be safer, more reliable, comfortable and pleasant. Summary of the Invention

[0003] The purpose of the present invention is to provide a type of truss for a portable hanging chair. This type of truss for a hanging chair adopts folding and unfolding principles of various different structures, different truss structures, and different rigid hinge structures. After being equipped with various styles of fabrics, the portable hanging chair can be conveniently folded and unfolded, and at the same time, it can be self-locked after being unfolded, has a small volume after folding, strong rigidity after unfolding, a simple structure, light weight, and is easy to carry.

[0004] The purpose of the present invention is achieved by the following measures:

[0005] Portable hanging chair truss, comprising: a main pipe (1), an auxiliary leg pipe (2), a sliding sleeve A (3), an auxiliary leg push-pull pipe (4), a main pipe foot plate (5), a support (6), an auxiliary foot plate (7), a hanging chair fabric (8), a limiting member (11), a groove (12), a sliding sleeve B (15), a sliding sleeve C (16), a sliding sleeve D (17), a longitudinal folding device A, a longitudinal folding device B, a longitudinal folding device C, a longitudinal folding device D, a longitudinal folding device E, a longitudinal folding device F, a longitudinal folding device G, and two-side transverse folding structures A, two-side transverse folding structures B, two-side transverse folding structures C, two-side transverse folding structures D, two-side transverse folding structures E, an auxiliary leg pipe rigidification structure. The portable hanging chair truss for double or multiple use further comprises a top unfolding device, a longitudinal top pipe (13), a rigid locking pipe (14), a sunshade fabric (9), a connecting sleeve (10). It is characterized in that on one side in the transverse direction of the two main pipes, that is, on one side in the depth direction of the portable hanging chair truss, the auxiliary leg pipe is hinged to the main pipe at the top end of the main pipe, or in the middle, upper part or end of the main pipe, or is hinged to the sliding sleeve A placed on the main pipe, or the main pipe and the auxiliary leg pipe are not directly hinged and are in an open state at their upper ends. After unfolding, the two main pipes and the auxiliary leg pipes form a set of identical triangular shapes with the ground to support the ground. The top end of the main pipe is inserted into the sleeve hole of the connecting sleeve (10). The seat fabric is either directly connected to the connecting sleeve with a high-strength rope, or is connected to the connecting sleeve with an iron ring or a high-strength rope through a single hanging ring or a double hanging ring installed on the longitudinal top pipe to form a hanging chair; in the longitudinal direction between the two main pipes, that is, facing the two main pipes of the portable hanging chair truss, either the longitudinal folding device A is installed, or the longitudinal folding device B is installed, or the longitudinal folding device C is installed, or the longitudinal folding device D is installed, or the longitudinal folding device E is installed, or the longitudinal folding device F is installed, or the longitudinal folding device G is installed;Between the main pipe and the auxiliary leg pipe which are hinged or non-hinged at the upper part, either the transverse folding structure A on both sides is installed, or the transverse folding structure B on both sides is installed, or the transverse folding structure C on both sides is installed, or the transverse folding structure D on both sides is installed, or the transverse folding structure E on both sides is installed. The longitudinal folding device B (1, 2, 3, 4, 5, 6, 11, 25) includes: the main pipe (1), the auxiliary leg pipe (2), the sliding sleeve A (3), the auxiliary leg push-pull pipe (4), the main pipe foot plate (5), the support (6), the limiting member (11), the straight cross pipe (25). The upper end of the auxiliary leg pipe is hinged above or at the upper end of the main pipe. One end of the auxiliary leg push-pull pipe is hinged to the sliding sleeve A on the main pipe, and the other end is either hinged to the support fixed on the auxiliary leg pipe or directly hinged to the auxiliary leg pipe. The two straight cross pipes are hinged to each other in the middle. The lower ends of the two straight cross pipes are either respectively hinged to the main pipe foot plates at the lower ends of both main pipes or directly hinged to the support at the lower part of the main pipe. The upper ends of the two straight cross pipes are either respectively hinged to the sliding sleeve A hinged to the auxiliary leg push-pull pipe on the main pipe or directly hinged to the auxiliary leg push-pull pipe hinged to the sliding sleeve A. One end of the auxiliary leg push-pull pipe is hinged to the sliding sleeve A, and the other end is either hinged to the support fixed on the auxiliary leg pipe or directly hinged to the auxiliary leg pipe. The two straight cross pipes and the two auxiliary leg push-pull pipes jointly push and pull the sliding sleeve A to slide up and down along the main pipe. When the sliding sleeve A is lifted upward or the upward cross angle between the two straight cross pipes is reduced, under the action of the cross structure movement, the two main pipes will gradually move closer to the middle, and finally the two main pipes achieve parallel folding in the longitudinal direction. At the same time, the upward moving sliding sleeve A drives the auxiliary leg push-pull pipe to rotate around its hinge point, so that the auxiliary leg pipe also rotates inward around its hinge point with the main pipe until the auxiliary leg pipe and the main pipe tend to be parallel; conversely, when the sliding sleeve A is pushed downward or the upward cross angle between the two straight cross pipes is increased, under the action of the cross structure movement, the two main pipes will gradually expand parallel to both sides. At this time, the downward moving sliding sleeve A will drive the auxiliary leg push-pull pipe to rotate around its hinge point, so as to push the auxiliary leg pipe to rotate outward around its hinge point with the main pipe until the sliding sleeve A touches the limiting member. Finally, the auxiliary leg pipe and the main pipe are unfolded in a triangle to achieve full unfolding. Between the lower parts of the two side auxiliary leg pipes, either the auxiliary leg pipe rigidifying device is installed, or it is not installed, or the above longitudinal folding devices A, B, C, D, E, F, G are symmetrically installed; at the top of the portable hanging chair truss for two or more people, a top unfolding and folding device is configured. Between the longitudinal top pipe and the main pipe or the auxiliary leg pipe in the top unfolding and folding device, there is a rigid locking pipe which is manually threadedly connected in a triangle for rigid fixation.

[0006] A further solution is as follows: The above-mentioned longitudinal folding device A (12, 21, 22, 23, 23.1, 24, 24.1) includes: a rigid horizontal pipe A (21), a rigid horizontal pipe B (22), a rigid hinge (23), a hole A (23.1), an inclined cross pipe (24), a hole B (24.1), a groove (12). The rigid horizontal pipe B is hinged to the hole A of the rigid hinge fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the two side main pipes or to the supports fixed on the two side main pipes. After the two inclined cross pipes are hinged to each other, they are then hinged to the hole B in the middle parts of the rigid horizontal pipe A and the rigid horizontal pipe B. Finally, the two inclined cross pipes are either directly hinged to the sliding sleeve A installed on the main pipe or hinged to the upper end of the auxiliary leg pipe near the sliding sleeve A, and the auxiliary leg pipe is then hinged to the sliding sleeve A installed on the main pipe. The two inclined cross pipes push and pull the sliding sleeve A to slide up and down along the main pipe. When the rigid hinge is lifted upward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined cross pipes will move upward, pushing the sliding sleeve A to slide upward, and the two side main pipes will gradually move closer to the middle, and finally the longitudinal folding is achieved. On the contrary, when the sliding sleeve A is pushed downward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, the two side main pipes will separate to both sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with coaxial or parallel axes, and at the same time the sliding sleeve A slides down to be limited by the limiting member to achieve full expansion. The above-mentioned longitudinal folding device C (12, 23, 23.1, 26, 27, 28) includes: a rigid hinge (23), a hole A (23.1), a rigid long tube (26), a rigid short tube (27), a sliding sleeve push-pull tube (28), a groove (12), a limiting member (11), a rigid hinge member is fixed either on the rigid short tube or on the rigid long tube. The rigid short tube and the rigid long tube are hinged through hole A on the rigid hinge member. The two rigid long tubes are respectively hinged to the main pipe foot plate or the support at the lower ends of the two side main pipes, or directly hinged to the lower part of the main pipe. After that, the two rigid long tubes are hinged to each other at their middle parts. After the two rigid short tubes are hinged to the rigid long tubes through hole A on the rigid hinge member, they are respectively hinged to the support fixed on the two main pipes or directly hinged to the main pipe. One end of the sliding sleeve push-pull tube is hinged to sliding sleeve A installed on the main pipe, and the other end is hinged to either the rigid long tube or the support fixed thereon, or hinged to the rigid short tube, pushing and pulling sliding sleeve A to slide up and down along the main pipe; when reducing the upward crossing angle between the two rigid long tubes, under the action of the cross-hinged structure, through hole A of the rigid hinge member, it drives the rigid short tube to rotate upward around the hinge point on the main pipe, and the two side main pipes will gradually move closer to the middle, and finally achieve folding in the longitudinal direction, and the sliding sleeve push-pull tube can also push or pull sliding sleeve A on the main pipe to slide upward; conversely, when pushing downward and increasing the upward crossing angle between the rigid long tubes, under the action of the cross-hinged structure, through hole A of the rigid hinge member, it drives the rigid short tube to rotate downward around the hinge point on the main pipe, and the two side main pipes will gradually expand to both sides until the rigid short tube or the rigid long tube falls into the groove of the rigid hinge member, making the axes of the rigid short tube and the rigid long tube concentric or parallel. At this time, sliding sleeve A will also slide downward to the support or the limiting member and stop, achieving full expansion; the above-mentioned longitudinal folding device D (12, 21, 22, 23, 23.1, 28, 29, 29.1) includes: a rigid horizontal tube A (21), a rigid horizontal tube B (22), a rigid hinge member (23), hole A (23.1), a sliding sleeve push-pull tube (28), an inclined tube A (29), hole C)(29.1), groove (12), the rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged directly to the two main pipes or to the supports fixed on the main pipes. After one ends of the two inclined pipes A are respectively hinged to the lower ends of the main pipes, or to the feet of the main pipes, or to the supports, the other ends are then hinged upward to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes A do not need to be hinged to each other in the middle. One end of each of the two sliding sleeve push-pull pipes is hinged to the two inclined pipes A or the supports thereon, or is directly hinged to the rigid horizontal pipe A and the rigid horizontal pipe B respectively or through the supports thereon, and the other end is then hinged to the sliding sleeve A installed on the main pipe. The sliding sleeve A is pushed and pulled to slide up and down along the main pipe. When the rigid hinge piece is lifted upward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined pipe A will be driven to move towards the middle, and the two main pipes on both sides will gradually move closer to the middle. The sliding sleeve push-pull pipe will also push the sliding sleeve A on the main pipe to move upward, and finally the folding in the longitudinal direction is achieved. On the contrary, when the rigid hinge piece is pushed downward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, the inclined pipe A will be driven to move towards both sides, so that the two main pipes on both sides are separated. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with coaxial or parallel axes. The sliding sleeve push-pull pipe also pulls the sliding sleeve on the main pipe downward to slide to the support or the limiting part and stop, and finally the full expansion is achieved. The above longitudinal folding device E (12, 21, 22, 23, 23.1, 29.1, 30, 30.1) includes: rigid horizontal pipe A (21), rigid horizontal pipe B (22), rigid hinge piece (23), hole A (23.1), hole C (29.1), inclined pipe B (30), hole D (30.1), The rigid horizontal pipe B is hinged to the hole A of the rigid hinge member fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the sliding sleeve A placed on the two main pipes. Without the sliding sleeve pushing and pulling pipe, one end of each of the two inclined pipes B is respectively hinged to the lower end of the main pipe or the main pipe foot plate or the support, and then the other end crosses upward and is hinged to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes B cross and hinge with each other through the hole D in their middle parts; when the rigid hinge member is lifted upward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined pipes B will move towards the middle. At the same time, without an additional sliding sleeve pushing and pulling pipe, the rigid horizontal pipe A and the rigid horizontal pipe B can drive the sliding sleeve A on the main pipe to move upward, drive the two main pipes on both sides to gradually approach the middle, and finally achieve folding in the longitudinal direction; conversely, when the rigid hinge member is pushed downward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, it will drive the inclined pipes B to move towards both sides, and the sliding sleeve A hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipe will move downward, so that the two main pipes on both sides separate to both sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge member fixed on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with coaxial or parallel axes. At the same time, the sliding sleeve A also slides downward to the stop of the limiting member, and finally achieves full expansion; The above-mentioned longitudinal folding device E (3, 12, 15, 16, 21, 22, 23, 23.1, 28, 29.1, 30, 30.1) includes: the rigid horizontal pipe A (21), the rigid horizontal pipe B (22), the rigid hinge member (23), the hole A (23.1), the sliding sleeve pushing and pulling pipe (28), the hole C (29.1), the inclined pipe B (30), the hole D (30.1), further comprising: sliding sleeve A (3) or sliding sleeve B (15), sliding sleeve C (16), the rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A, the other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the sliding sleeve C placed on the two main pipes, one ends of the two inclined pipes B are respectively hinged to the lower end of the main pipe or the main pipe foot plate or the support, and then the other ends cross upward and are hinged to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B, and the two inclined pipes B cross each other through the hole D in the middle, at the same time, one ends of the two sliding sleeve push-pull pipes are directly hinged to the two inclined pipes B or hinged to the support fixed on the two inclined pipes B or directly hinged to the rigid horizontal pipe A and the rigid horizontal pipe B or the support thereon respectively, and the other ends are hinged to the sliding sleeve B or sliding sleeve A installed on the main pipe, and the sliding sleeve B or sliding sleeve A is pushed and pulled to slide up and down along the main pipe; when the rigid hinge piece is lifted upward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined pipe B will be driven to move towards the middle, and the sliding sleeve C hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipe will finally move upward, driving the two side main pipes to gradually move closer to the middle. At this time, the sliding sleeve push-pull pipe will also push the sliding sleeve B or sliding sleeve A on the main pipe to move upward, and finally realize the folding in the longitudinal direction; conversely, when the rigid hinge piece is pushed downward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, the inclined pipe B will be driven to move towards both sides, and the sliding sleeve C hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipe will move downward, so that the two side main pipes are separated to both sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with the same axis or parallel axes. At the same time, the sliding sleeve push-pull pipe pulls the sliding sleeve B or sliding sleeve A on the main pipe downward to move downward until it reaches the sliding sleeve C, and finally realizes the full expansion; the above-mentioned longitudinal folding device G (3, 12, 23, 23.1, 26, 27, 28) includes: a rigid hinge piece (23), hole A (23.1), a rigid long tube (26), a rigid short tube (27), a sliding sleeve push-pull tube (28), further comprising a sliding sleeve A (3), a groove (12), the rigid hinge member is fixed either on the rigid short tube or on the rigid long tube. The rigid short tube and the rigid long tube are hinged through hole A on the rigid hinge member. The two rigid long tubes are respectively hinged to the main pipe foot plate or support at the lower ends of the two side main pipes, or directly hinged to the lower part of the main pipe. Then, they are hinged to each other at their middle parts. After the two rigid short tubes are hinged to the rigid long tubes through hole A of the rigid hinge member, they are respectively hinged to the sliding sleeve A installed on the two main pipes, driving the sliding sleeve A to slide up and down along the main pipe. One end of the sliding sleeve push-pull tube is hinged to the rigid long tube or the support fixed thereon, and the other end is also hinged to the sliding sleeve A installed on the two main pipes. That is to say, both the sliding sleeve push-pull tube and the rigid short tube are hinged to the sliding sleeve A. The sliding sleeve push-pull tube and the rigid short tube jointly push and pull the sliding sleeve A to slide up and down along the main pipe. When reducing the upward crossing angle of the two rigid long tubes, under the action of the cross-hinged structure, through hole A of the rigid hinge member, it drives the rigid short tube to rotate and move upward around the hinge point of the sliding sleeve A on the main pipe. At the same time, under the action of the sliding sleeve push-pull tube hinged to the rigid long tube, the sliding sleeve A also moves upward, driving the two side main pipes to gradually move closer to the middle, and finally realizing folding in the longitudinal direction. In this process, when the sliding sleeve push-pull tube pushes the sliding sleeve A on the main pipe to slide upward, it also drives the rigid short tube hinged to the sliding sleeve A to move upward. On the contrary, when pushing downward and increasing the upward crossing angle of the two rigid long tubes, under the action of the cross-hinged structure, through hole A of the rigid hinge member, it drives the rigid short tube to rotate and move downward around the hinge point of the sliding sleeve A on the main pipe. At the same time, under the action of the sliding sleeve push-pull tube hinged to the rigid long tube, the sliding sleeve A also moves downward, driving the two side main pipes to gradually expand to both sides, and finally realizing unfolding in the longitudinal direction. In this process: when the sliding sleeve push-pull tube pulls the sliding sleeve A on the main pipe to slide downward; it also drives the rigid short tube hinged to the sliding sleeve A to move downward; until the rigid short tube or the rigid long tube falls into the groove of the rigid hinge member, making the axes of the rigid short tube and the rigid long tube concentric or parallel. At the same time, the sliding sleeve A that is sliding downward is also in a state of being limited by the limiting member, realizing complete unfolding.

[0007] A further solution is as follows: The above-mentioned two-side horizontal folding structure A (1, 2, 3, 4) includes: a main pipe (1), an auxiliary leg pipe (2), a sliding sleeve A (3), an auxiliary leg push-pull pipe (4). The auxiliary leg pipe is hinged to the sliding sleeve A placed on the main pipe. One end of the auxiliary leg push-pull pipe is either directly hinged to the main pipe or hinged to the main pipe foot plate or support fixed on the main pipe. The other end of the auxiliary leg push-pull pipe is either directly hinged to the auxiliary leg pipe or hinged to the support fixed on the auxiliary leg pipe. A limiting member for the downward movement of the sliding sleeve A is provided at the lower part of the main pipe. When the sliding sleeve A on the main pipe slides upward, the hinged auxiliary leg pipe also moves upward, driving the auxiliary leg push-pull pipe to rotate upward until the auxiliary leg pipe and the auxiliary leg push-pull pipe tend to be parallel, realizing two-side horizontal folding. On the contrary, when the sliding sleeve A on the main pipe moves downward, the hinged auxiliary leg pipe also moves downward, driving the auxiliary leg push-pull pipe to rotate downward until the sliding sleeve A slides to the limiting member, thereby realizing the full expansion of the two-side auxiliary leg pipes. The above-mentioned two-side horizontal folding structure B (1, 2, 3, 4) includes: a main pipe (1), an auxiliary leg pipe (2), a sliding sleeve A (3), an auxiliary leg push-pull pipe (4). The auxiliary leg pipe is either directly hinged to the main pipe at the upper end or upper part or hinged through a support fixed on the upper part of the main pipe. One end of the auxiliary leg push-pull pipe is hinged to the sliding sleeve A on the main pipe. The other end of the auxiliary leg push-pull pipe is either directly hinged to the auxiliary leg pipe or hinged to the support fixed on the auxiliary leg pipe. A limiting member for the downward movement of the sliding sleeve A is provided at the lower part of the main pipe. When the sliding sleeve A on the main pipe is pushed upward, the hinged auxiliary leg push-pull pipe also moves upward, driving the auxiliary leg pipe hinged to the main pipe to rotate towards the main pipe until the auxiliary leg pipe and the auxiliary leg push-pull pipe tend to be parallel, realizing two-side horizontal folding. On the contrary, when the sliding sleeve A on the main pipe moves downward, the hinged auxiliary leg push-pull pipe also moves downward, driving the auxiliary leg pipe to rotate away from the main pipe until the sliding sleeve A slides to the limiting member, thereby realizing the full expansion of the two-side auxiliary leg pipes. The above-mentioned two-side horizontal folding structure C (1, 2, 3, 4, 4.1) includes: a main pipe (1), an auxiliary leg pipe (2), a sliding sleeve A (3), an auxiliary leg push-pull pipe (4), a hole E (4.1), The auxiliary leg tube and the main tube are not hinged at their upper parts. They are inclined to each other in a triangular non-hinged open state. The auxiliary leg push-pull tubes are arranged in a cross pattern. At a position above their middle parts, they are hinged with Kong Wu. The upper ends of the auxiliary leg push-pull tubes are respectively hinged with Slide Sleeve A configured on the main tube and the auxiliary leg tube. The lower ends of the two auxiliary leg push-pull tubes are respectively hinged with a foot plate or a support fixed at the lower ends of the main tube and the auxiliary leg tube. Limit members for the downward movement of Slide Sleeve A are installed at the lower parts of the main tube and the auxiliary leg tube. When Slide Sleeve A on the main tube slides upward, the auxiliary leg push-pull tube hinged with Slide Sleeve A also moves upward. At this time, it drives the other auxiliary leg push-pull tube cross-hinged with it at Kong Wu to make the same movement, thereby pushing Slide Sleeve A on the auxiliary leg tube to slide upward as well, causing the main tube and the auxiliary leg tube to approach each other until the main tube and the auxiliary leg tube are nearly parallel, realizing the lateral folding on both sides. Conversely, when pushing Slide Sleeve A on the main tube or the auxiliary leg tube to move downward, the cross-hinged auxiliary leg push-pull tubes also move downward, driving the auxiliary leg tubes to move away from the main tube until Slide Sleeve A on the main tube or the auxiliary leg tube slides to the limit member, thus realizing the full expansion of the auxiliary leg tubes on both sides. The above-mentioned lateral folding structure Ding (1, 2, 3, 4) on both sides includes: the main tube (1), the auxiliary leg tube (2), Slide Sleeve A (3), the auxiliary leg push-pull tube (4). The auxiliary leg tube or the main tube is directly hinged at the upper end or upper part, or is hinged through a support fixed at the upper part of the main tube. The two auxiliary leg push-pull tubes are arranged in a cross pattern, but they are not cross-hinged with each other. At this time, the auxiliary leg push-pull tubes are only processed with hinge holes at their two ends. The upper ends of the two auxiliary leg push-pull tubes are respectively hinged with Slide Sleeve A on the main tube and the auxiliary leg tube. The other ends of the two auxiliary leg push-pull tubes are respectively at the lower ends of the main tube and the auxiliary leg tube, or are hinged with the main tube foot plate and the auxiliary foot plate fixed to the main tube and the auxiliary leg tube, or are hinged with a support fixed on the main tube and the auxiliary leg tube. Limit members for restricting the downward movement of Slide Sleeve A are installed at the lower parts of the main tube and the auxiliary leg tube. When Slide Sleeve A on the main tube slides upward, the auxiliary leg push-pull tube hinged with it also moves upward, driving the auxiliary leg tube to rotate inward. At this time, the other auxiliary leg push-pull tube not hinged with it in the middle can only make a similar movement, pushing Slide Sleeve A on the auxiliary leg tube to slide upward as well, causing the main tube and the auxiliary leg tube to approach each other until the main tube and the auxiliary leg tube are nearly parallel, realizing the lateral folding on both sides. Conversely, when pushing Slide Sleeve A on the main tube or the auxiliary leg tube to move downward, the cross-arranged but not hinged auxiliary leg push-pull tubes also move downward, driving the auxiliary leg tubes to rotate away from the main tube until Slide Sleeve A on the main tube and the auxiliary leg tube slides to the limit member, thus realizing the full expansion of the auxiliary leg tubes on both sides. The above-mentioned lateral folding structure Wu (1, 2, 3, 4, 4.1, 15, 17) on both sides includes: the main tube (1), the auxiliary leg tube (2), Slide Sleeve A (3) or Slide Sleeve B (15), the auxiliary leg push-pull tube (4), Kong Wu (4.1), the sliding sleeve D (17), the auxiliary leg tube is directly hinged to the main tube at its upper end or upper part, or is hinged through a support fixed to the upper part of the main tube. The auxiliary leg push-pull tubes are arranged in a cross state, and there are holes E at the upper part of their middle parts for mutual hinging in pairs. The upper ends of the two auxiliary leg push-pull tubes are respectively hinged to the sliding sleeve B or sliding sleeve A arranged above the main tube and the auxiliary leg tube. The lower ends of the two auxiliary leg push-pull tubes are respectively hinged to the sliding sleeve D arranged below the main tube and the auxiliary leg tube. Limit members for restricting the downward movement of the sliding sleeve B or sliding sleeve A or sliding sleeve D are installed in the middle and lower parts of the main tube or the auxiliary leg tube; when the sliding sleeve B or sliding sleeve A moves upward, due to the cross-hinged structure, it drives the auxiliary leg push-pull tubes and the sliding sleeve D to also move upward. At the same time, the upward included angle of the auxiliary leg push-pull tubes gradually decreases, thereby pulling the auxiliary leg tube to rotate inward until the auxiliary leg tube tends to be parallel to the main tube, reaching the fully folded state; conversely, when the sliding sleeve B or sliding sleeve A moves downward, due to the cross-hinged structure, it pushes the auxiliary leg push-pull tubes and the sliding sleeve D to also move downward. At the same time, the upward included angle of the auxiliary push-pull tubes gradually increases, thereby pushing the auxiliary leg tube to rotate outward to reach the fully unfolded state.

[0008] A further solution is as follows: The above-mentioned longitudinal folding device A, or matching the lateral folding structures A on both sides, or matching the lateral folding structures B on both sides, or matching the lateral folding structures C on both sides, or matching the lateral folding structures D on both sides, or matching the lateral folding structures E on both sides; The longitudinal folding device B, or matching the lateral folding structures B on both sides, or matching the lateral folding structures C on both sides, or matching the lateral folding structures D on both sides, or matching the lateral folding structures E on both sides; The longitudinal folding device C, or matching the lateral folding structures A on both sides, or matching the lateral folding structures B on both sides, or matching the lateral folding structures C on both sides, or matching the lateral folding structures D on both sides, or matching the lateral folding structures E on both sides; The longitudinal folding device D, or matching the lateral folding structures A on both sides, or matching the lateral folding structures B on both sides, or matching the lateral folding structures C on both sides, or matching the lateral folding structures D on both sides, or matching the lateral folding structures E on both sides; The longitudinal folding device E, or matching the lateral folding structures A on both sides, or matching the lateral folding structures B on both sides, or matching the lateral folding structures C on both sides, or matching the lateral folding structures D on both sides, or matching the lateral folding structures E on both sides; The longitudinal folding device F, or matching the lateral folding structures A on both sides, or matching the lateral folding structures B on both sides, or matching the lateral folding structures C on both sides, or matching the lateral folding structures D on both sides, or matching the lateral folding structures E on both sides; The longitudinal folding device G, or matching the lateral folding structures A on both sides, or matching the lateral folding structures B on both sides, or matching the lateral folding structures C on both sides, or matching the lateral folding structures D on both sides, or matching the lateral folding structures E on both sides; Under the condition that the structural dimensions permit, 34 longitudinal and lateral folding methods of the portable hanging chair truss can be matched to make the folding and unfolding of the portable hanging chair truss more diversified.

[0009] A further solution is as follows: The above-mentioned auxiliary leg tube rigidifying device (12, 61, 62, 63, 63.1) includes: auxiliary rigid tube A (61), auxiliary rigid tube B (62), auxiliary rigid hinge member (63), hole F (63.1), groove (12). One end of the auxiliary rigid tube B is hinged to the hole F on the auxiliary rigid hinge member fixed to one end of the auxiliary rigid tube A. The other ends of the auxiliary rigid tube A and the auxiliary rigid tube B are respectively hinged to the auxiliary foot plate or support at the lower end of the auxiliary leg tube, or directly hinged. When folding the folding portable hanging chair truss, push the auxiliary rigid hinge member inward or rotate the auxiliary rigid tube A and the auxiliary rigid tube B inward until the dead point is passed and the self-locking is released, and then it can be folded in the manner of the aforementioned longitudinal folding devices A, B, C, D, E, F, G and the two-side transverse folding structures A, B, C, D, E, and the auxiliary leg tube rigidifying device will gradually retract upward until it tends to be parallel to the auxiliary leg tube. Conversely, when unfolding the folding portable hanging chair truss, under the action of the aforementioned longitudinal folding devices A, B, C, D, E, F, G and the two-side transverse folding structures A, B, C, D, E, the auxiliary rigid hinge member will automatically move downward, and the auxiliary rigid tube A and the auxiliary rigid tube B will also rotate downward until the straight tube part of the auxiliary rigid tube B falls into the groove of the rigid auxiliary hinge fixed on the auxiliary rigid tube A, presenting a self-locking state at the dead point. At this time, the auxiliary rigid tube A and the auxiliary rigid tube B are also in a horizontal state with a 180-degree coaxial line or parallel axes, and the auxiliary rigid tube A and the auxiliary rigid tube B are in a 90-degree orthogonal state with the auxiliary leg tube.

[0010] A further solution is as follows: The above-mentioned top unfolding and folding device (10, 13, 14, 40, 41, 42, 43, 44, 45, 46, 47, 48) includes: a coupling sleeve (10), a longitudinal jacking pipe (13), a rigid locking pipe (14), a double sling (40), a sliding support (41), a single sling (42), a support rod (43), a push-pull rod (44), a tensioning rope (45), a ribbon (46), a rope and belt connector (47), a support member (48). The coupling sleeve is fixed on both sides of the longitudinal jacking pipe. A double sling is arranged in the middle of the longitudinal jacking pipe for hanging on one side of the fabric of the two side chairs. Single slings are arranged on both sides of the longitudinal jacking pipe for hanging on the other side of the fabric of the two side chairs. Support members are fixed at both ends of the longitudinal jacking pipe or outside the coupling sleeve. Support rods are symmetrically hinged to the upper edges of the support members. A sliding support is installed on the longitudinal jacking pipe inside the single slings arranged on both sides of the longitudinal jacking pipe. One end of the symmetrically arranged push-pull pipes is hinged to the sliding support, and the other end is hinged to the support rod. Manually push and pull the sliding support along the longitudinal direction of the longitudinal jacking pipe, and the push-pull rod hinged thereto can push and pull the support rod to unfold and fold. Rope and belt connectors are installed at the four corners of the top unfolding and folding device. An elastic tensioning rope is arranged horizontally, and a non-elastic ribbon or rope is arranged longitudinally. When moving the sliding support to make the push-pull pipe push the support rod to unfold the top unfolding and folding device, the elastic tensioning rope has an effect of passing through a dead point, that is, after unfolding, it can tighten the support rod to keep it in an unfolded state and is not easily automatically retracted and folded. The four corners of the sunshade fabric are connected to the rope and belt connectors, and the periphery of the sunshade fabric is sewn and connected to the ribbon, rope and tensioning rope, and can be unfolded and folded along with the folding and unfolding of the support rod.

[0011] A further solution is as follows: The above-mentioned coupling sleeve (10) is connected to the main pipe and the top of the main pipe and the auxiliary leg pipe in an open state, either in a single-hole insertion form or in a double-hole insertion form.

[0012] Portable hanging chair truss, comprising: a main pipe (1), auxiliary leg pipes (2), a sliding sleeve e (18), auxiliary leg push-pull pipes (4), a main pipe foot plate (5), a support (6), auxiliary foot plates (7), a hanging chair fabric (8), a connecting sleeve (10), a limiting member (11), a groove (12), longitudinal folding device A, longitudinal folding device C, longitudinal folding device D, longitudinal folding device E, longitudinal folding device F, longitudinal folding device G, further comprising a sliding sleeve c (16), a sliding sleeve f (19), characterized in that the two main pipes are arranged vertically or longitudinally outwardly inclined on both sides in the longitudinal direction of the portable hanging chair truss, the auxiliary leg pipes and the auxiliary leg push-pull pipes are symmetrically arranged in the transverse direction on both sides of the main pipes, the upper ends of the two auxiliary leg pipes are hinged to the sliding sleeve e or the sliding sleeve f assembled on the main pipe, and are arranged transversely, the auxiliary leg push-pull pipes are hinged to the main pipe foot plate or the support fixed to the lower end of the main pipe, and the other end of the auxiliary leg push-pull pipe is hinged to the auxiliary foot plate at the lower end of the auxiliary leg pipe or the support hinged to the lower part of the auxiliary leg pipe, or is directly hinged at the lower part of the auxiliary leg pipe. Between the two main pipes on both sides, either longitudinal folding device A, or longitudinal folding device C, or longitudinal folding device D, or longitudinal folding device E, or longitudinal folding device F, or longitudinal folding device G is installed. These longitudinal folding devices are all compound cross rigid hinges. When changing the included angle of the relevant connecting pipes of each longitudinal folding device's rigid hinge, on the one hand, the main pipes in the longitudinal direction can be folded towards the middle or unfolded towards both sides, and on the other hand, the sliding sleeve e or the sliding sleeve f can be simultaneously pushed to move up and down along the main pipe, so that the auxiliary leg pipes in the transverse direction can be folded inwards or unfolded outwards. When the straight pipe parts of the relevant rigid pipes fall into the groove, the rigid unfolding of the portable hanging chair truss can be realized and it is in a self-locking state; the connecting sleeve (10) is sleeved on the top of the main pipe, and the connecting sleeve is connected to the seat fabric with a high-strength rope to form a hanging chair.

[0013] A further solution is as follows: The above-mentioned longitudinal folding device A (12, 21, 22, 23, 23.1, 24, 24.1) includes: a rigid horizontal pipe A (21), a rigid horizontal pipe B (22), a rigid hinge (23), a hole A (23.1), an inclined cross pipe (24), a hole B (24.1), a groove (12). The rigid horizontal pipe B is hinged to the hole A of the rigid hinge on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the main pipes on both sides or to the supports fixed on the main pipes. After the two inclined cross pipes are hinged to each other, they are then hinged to the hole B in the middle parts of the rigid horizontal pipe A and the rigid horizontal pipe B. Finally, the two inclined cross pipes are hinged to the sliding sleeve E installed on the main pipe. The two inclined cross pipes push and pull the sliding sleeve E to slide up and down along the main pipe. When the rigid hinge is lifted upward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined cross pipes will move upward, pushing the sliding sleeve E to slide upward, and the main pipes on both sides will gradually move closer to the middle, finally achieving folding in the longitudinal direction. On the contrary, when the sliding sleeve E is pushed downward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, the main pipes on both sides will separate to both sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with coaxial or parallel axes. At the same time, the sliding sleeve E slides down to be limited by the limiting member, achieving full expansion. The above-mentioned longitudinal folding device C (12, 23, 23.1, 26, 27, 28) includes: a rigid hinge (23), a hole A (23.1), a rigid long tube (26), a rigid short tube (27), a sliding sleeve push-pull tube (28), a groove (12), a limiting member (11), the rigid hinge member is fixed either on the rigid short tube or on the rigid long tube. The rigid short tube and the rigid long tube are hinged through the hole A on the rigid hinge member. The two rigid long tubes are respectively hinged to the main pipe foot plates or supports at the lower ends of the two side main pipes, or directly hinged to the lower part of the main pipe. Then, the two rigid long tubes are hinged to each other at their middle parts. After the two rigid short tubes are hinged to the rigid long tubes through the hole A on the rigid hinge member, they are respectively hinged to the supports fixed on the two main pipes or directly hinged to the main pipes. One end of the sliding sleeve push-pull tube is hinged to the sliding sleeve E installed on the main pipe, and the other end is hinged to either the rigid long tube or the support fixed thereon, or hinged to the rigid short tube, pushing and pulling the sliding sleeve E to slide up and down along the main pipe. When the upward crossing angle between the two rigid long tubes is reduced, under the action of the cross-hinged structure, through the hole A of the rigid hinge member, it drives the rigid short tube to rotate upward around the hinge point on the main pipe, and the two side main pipes will gradually move closer to the middle. Finally, folding in the longitudinal direction is achieved, and the sliding sleeve push-pull tube can also push or pull the sliding sleeve E on the main pipe to slide upward. On the contrary, when the upward crossing angle between the rigid long tubes is increased by pushing downward, under the action of the cross-hinged structure, through the hole A of the rigid hinge member, it drives the rigid short tube to rotate downward around the hinge point on the main pipe, and the two side main pipes will gradually expand to both sides until the rigid short tube or the rigid long tube falls into the groove of the rigid hinge member, making the axes of the rigid short tube and the rigid long tube concentric or parallel. At this time, the sliding sleeve E will also slide downward to the support or the limiting member and stop, achieving full expansion. The above-mentioned longitudinal folding device D (12, 21, 22, 23, 23.1, 28, 29, 29.1) includes: a rigid horizontal tube A (21), a rigid horizontal tube B (22), a rigid hinge member (23), a hole A (23.1), a sliding sleeve push-pull tube (28), an inclined tube A (29), a hole C)(29.1), groove (12), the rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged directly to the two main pipes or to the supports fixed on the main pipes. After one ends of the two inclined pipes A are respectively hinged to the lower ends of the two side main pipes or the main pipe foot plates or the supports, the other ends are then hinged upward to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes A do not need to be hinged to each other in the middle. One ends of the two sliding sleeve push-pull pipes are either directly hinged to the two inclined pipes A, or hinged to the supports on the two inclined pipes A, or directly hinged to the rigid horizontal pipe A and the rigid horizontal pipe B respectively or to the supports fixed thereon. The other ends of the two sliding sleeve push-pull pipes are then hinged to the sliding sleeve E installed on the main pipe, and the sliding sleeve E is pushed and pulled to slide up and down along the main pipe; when the rigid hinge piece is lifted upward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, it will drive the inclined pipe A to move towards the middle, and the two side main pipes will gradually move closer to the middle. The sliding sleeve push-pull pipes will also push the sliding sleeve E on the main pipe to move upward, and finally achieve folding in the longitudinal direction; conversely, when the rigid hinge piece is pushed downward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, it will drive the inclined pipe A to move towards both sides, so that the two side main pipes are separated to both sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A, and the horizontal rigid straight pipe and the horizontal rigid bent pipe are in a 180-degree horizontal state with the same axis or parallel axes. The sliding sleeve push-pull pipes also pull the sliding sleeves on the main pipes to slide downward to the supports or limit pieces and stop, and finally achieve full expansion; the above-mentioned longitudinal folding device E (12, 21, 22, 23, 23.1, 29.1, 30, 30.1) includes: the rigid horizontal pipe A (21), the rigid horizontal pipe B (22), the rigid hinge piece (23), the hole A (23.1), the hole C (29.1), the inclined pipe B (30), the hole D (30.1), The rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the sliding sleeves E placed on the two main pipes. One ends of the two inclined pipes B are respectively hinged to the lower ends of the main pipes or the main pipe foot plates or the supports, and then the other ends cross upward and are hinged to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes B cross each other pairwise through the hole D in their middle parts; when the rigid hinge piece is lifted upward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined pipes B will move towards the middle. At the same time, the rigid horizontal pipe A and the rigid horizontal pipe B drive the sliding sleeves E on the main pipes to move upward, driving the two side main pipes to gradually approach the middle, and finally realizing folding in the longitudinal direction; conversely, when the rigid hinge piece is pushed downward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, it will drive the inclined pipes B to move towards both sides, and the sliding sleeves E hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipes will move downward, so that the two side main pipes separate from each other. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with coaxial or parallel axes. At the same time, the sliding sleeve E also slides downward to the stopper, and finally realizes full expansion; The above-mentioned longitudinal folding device F (12, 16, 18, 19, 21, 22, 23, 23.1, 28, 29, 29.1) includes: the rigid horizontal pipe A (21), the rigid horizontal pipe B (22), the rigid hinge piece (23), the hole A (23.1), the sliding sleeve push-pull pipe (28), the inclined pipe A (29), the hole C (29.1), further comprising: sliding sleeve C (16), sliding sleeve E (18) or sliding sleeve F (19). The rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the sliding sleeve C placed on the two main pipes. After one ends of the two inclined pipes A are respectively hinged to the lower end of the main pipe, the main pipe foot plate or the support, the other ends cross upward and are hinged to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes A do not cross and hinge with each other pairwise in the middle, presenting an open, unconstrained and unhinged state. At the same time, one end of the two sliding sleeve push-pull pipes is hinged to the two inclined pipes A or the supports thereon, or is respectively hinged to the rigid horizontal pipe A and the rigid horizontal pipe B or the supports thereon, and the other end is hinged to the sliding sleeve E or the sliding sleeve F installed on the main pipe. The sliding sleeve E or the sliding sleeve F is pushed and pulled to slide up and down along the main pipe. When the rigid hinge piece is lifted upward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B downward is reduced, it will drive the inclined pipe A to move towards the middle. The sliding sleeve C hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipe will eventually move upward, driving the two main pipes on both sides to gradually move closer to the middle. At this time, the sliding sleeve push-pull pipe will also push the sliding sleeve E or the sliding sleeve F on the main pipe upward, and finally achieve folding in the longitudinal direction. On the contrary, when the rigid hinge piece is pushed downward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B downward is increased, it will drive the inclined pipe A to move towards both sides. The sliding sleeve C hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipe will move downward, so that the two main pipes on both sides separate. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A. The rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with the same axis or parallel axes. At the same time, the sliding sleeve push-pull pipe pulls the sliding sleeve E or the sliding sleeve F on the main pipe downward to also move downward and approach the sliding sleeve C, and finally achieve full expansion. The above-mentioned longitudinal folding device G (12, 18, 23, 23.1, 26, 27, 28) includes: a rigid hinge piece (23), hole A (23.1), a rigid long tube (26), a rigid short tube (27), a sliding sleeve push-pull tube (28), and also includes a sliding sleeve e (18), a groove (12). The rigid hinge is either fixed on the rigid short tube or fixed on the rigid long tube. The rigid short tube and the rigid long tube are hinged through the hole a on the rigid hinge. The two rigid long tubes are respectively hinged to the main pipe foot plate or support at the lower ends of the two side main pipes, or directly hinged to the lower part of the main pipe. Then, they are hinged to each other at the middle part. After the two rigid short tubes are hinged to the rigid long tubes through the hole a on the rigid hinge, they are respectively hinged to the sliding sleeve e installed on the two main pipes. One end of the sliding sleeve push-pull tube is hinged to the rigid long tube or the support fixed thereon, and the other end is also hinged to the sliding sleeve e installed on the two main pipes. That is, both the sliding sleeve push-pull tube and the rigid short tube are hinged to the sliding sleeve e. The sliding sleeve push-pull tube and the rigid short tube jointly push and pull the sliding sleeve e to slide up and down along the main pipe. When reducing the upward crossing angle of the two rigid long tubes, under the action of the cross-hinged structure, through the hole a on the rigid hinge, it drives the rigid short tube to rotate and move upward around the hinge point of the sliding sleeve e on the main pipe. At the same time, under the action of the sliding sleeve push-pull tube hinged to the rigid long tube, the sliding sleeve e also moves upward, driving the two side main pipes to gradually move closer to the middle, and finally realizing the folding in the longitudinal direction. In this process, when the sliding sleeve push-pull tube pushes the sliding sleeve e on the main pipe to slide upward, it also drives the rigid short tube hinged to the sliding sleeve e to move upward. Conversely, when pushing downward and increasing the upward crossing angle of the two rigid long tubes, under the action of the cross-hinged structure, through the hole a on the rigid hinge, it drives the rigid short tube to rotate and move downward around the hinge point of the sliding sleeve e on the main pipe. At the same time, under the action of the sliding sleeve push-pull tube hinged to the rigid long tube, the sliding sleeve e also moves downward, driving the two side main pipes to gradually expand to both sides, and finally realizing the unfolding in the longitudinal direction. In this process: when the sliding sleeve push-pull tube pulls the sliding sleeve e on the main pipe to slide downward; it also drives the rigid short tube hinged to the sliding sleeve e to move downward; until the rigid short tube or the rigid long tube falls into the groove of the rigid hinge, making the axes of the rigid short tube and the rigid long tube concentric or parallel. At the same time, the sliding sleeve e that is slid downward is also in a state of being limited by the limiting member, realizing the full unfolding.

[0014] The present invention adopts the above technical solution, and its advantages are as follows:

[0015] 1. By adopting different truss folding principles and folding methods, the truss of the portable hanging chair can be folded and unfolded in the longitudinal direction and the transverse direction in different matching ways. The folding and unfolding are very fast, diverse, and at the same time simple and self-locking.

[0016] 2. No matter which different truss folding principles and folding methods are adopted, and no matter what kind of matching, the truss of the portable hanging chair can be folded into a stick shape. The folded truss of the portable hanging chair has a small volume and is convenient for transportation, carrying, and placing.

[0017] 3. By adopting the principle of rigid hinge, compared with the truss of traditional swing chairs, the truss of the portable hanging chair has the characteristics of high system rigidity, better stability and safety after being unfolded. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is an axonometric solid view of the truss of the portable hanging chair of the present invention, where the main pipe sliding sleeve is hinged to the auxiliary leg pipe on one side, longitudinal folding device A is adopted, transverse folding structures B are arranged on both sides, and a rigidifying device for the auxiliary leg pipe is installed, and the truss of the portable hanging chair is in a fully unfolded state.

[0019] Figure 2 FIG. is an axonometric solid view of the truss of the portable hanging chair of the present invention, where the main pipe is hinged to the auxiliary leg pipe at a high position on one side, longitudinal folding device A is adopted, transverse folding structures A are arranged on both sides, and the truss of the portable hanging chair is in a fully unfolded state.

[0020] Figure 3 FIG. is an axonometric solid view of the truss of the portable hanging chair of the present invention, where the tops of the main pipe and the auxiliary leg pipe are open, longitudinal folding device A is adopted and symmetrically arranged, transverse folding structures C are arranged on both sides, and the truss of the portable hanging chair is in a fully unfolded state.

[0021] Figure 4 FIG. is an axonometric solid view of the truss of the portable hanging chair of the present invention, where the tops of the main pipe and the auxiliary leg pipe are open, longitudinal folding device A is adopted and symmetrically arranged, transverse folding structures C are arranged on both sides, and a top unfolding and folding device is provided, and the truss of the portable hanging chair is in a fully unfolded state.

[0022] Figure 5 FIG. is an axonometric solid view of the truss of the portable hanging chair of the present invention, where the auxiliary leg pipe is hinged to the sliding sleeve A on the transverse side of the main pipe, longitudinal folding device A is adopted, transverse folding structures A are arranged on both sides, a rigidifying device for the auxiliary leg pipe, a top unfolding and folding device, a sunshade fabric and a rigid locking pipe are provided, and the truss of the portable hanging chair is in a fully unfolded state.

[0023] Figure 6 FIG. is an axonometric solid view of the truss of the portable hanging chair of the present invention, where the auxiliary leg pipe is hinged to the support on the upper part of the transverse side of the main pipe, longitudinal folding device A is adopted, transverse folding structures B are arranged on both sides, and a rigidifying device for the auxiliary leg pipe is provided, and the truss of the portable hanging chair is in a fully unfolded state.

[0024] Figure 7 FIG. is Figure 2 the axonometric solid view of the truss of the portable hanging chair in FIG., in a semi-folded state.

[0025] Figure 8 FIG. is Figure 3 the axonometric solid view of the truss of the portable hanging chair in FIG., in a fully folded state.

[0026] Figure 9 FIG. is Figure 6The portable hanging chair truss in [description], an axonometric stereogram in a semi-folded state.

[0027] Figure 10 This is the portable hanging chair truss of the present invention. The main pipe is hinged with the auxiliary leg pipe at a high position on one side, and the longitudinal folding device B is adopted. The two sides have a transverse folding structure B, and the rigidifying device for the auxiliary leg pipe is installed. It is an axonometric stereogram of the portable hanging chair truss in a fully unfolded state.

[0028] Figure 11 Is Figure 10 The portable hanging chair truss in [description], an axonometric stereogram in a semi-folded state.

[0029] Figure 12 This is the portable hanging chair truss of the present invention. The main pipe supports and hinges the auxiliary leg pipe at a high position on one side, and the longitudinal folding device B is adopted. The two sides have a transverse folding structure B, and it is equipped with a rigidifying device for the auxiliary leg pipe, a top unfolding and folding device, and a rigid locking pipe. It is an axonometric stereogram of the portable hanging chair truss in a fully unfolded state.

[0030] Figure 13 Is Figure 12 The portable hanging chair truss in [description], an axonometric stereogram in a semi-folded state.

[0031] Figure 14 This is the portable hanging chair truss of the present invention. The main pipe is hinged with the auxiliary leg pipe at a high position on one side, and the longitudinal folding device C is adopted. The two sides have a transverse folding structure B, and the rigidifying device for the auxiliary leg pipe is installed. It is an axonometric stereogram of the portable hanging chair truss in a fully unfolded state.

[0032] Figure 15 This is the portable hanging chair truss of the present invention. The upper end of the main pipe on one side is hinged with the auxiliary leg pipe, and the longitudinal folding device C is adopted. The two sides have a transverse folding structure D. It is an axonometric stereogram of the portable hanging chair truss in a fully unfolded state.

[0033] Figure 16 This is the portable hanging chair truss of the present invention. The sliding sleeve of the main pipe is hinged with the auxiliary leg pipe on one side, and the longitudinal folding device C is adopted. The two sides have a transverse folding structure A. It is an axonometric stereogram of the portable hanging chair truss in a fully unfolded state.

[0034] Figure 17 This is the portable hanging chair truss of the present invention. The sliding sleeve of the main pipe is hinged with the auxiliary leg pipe on one side, and the longitudinal folding device C is adopted. The two sides have a transverse folding structure A, and it is equipped with a rigidifying device for the auxiliary leg pipe, a top unfolding and folding device, and a rigid locking pipe. It is an axonometric stereogram of the portable hanging chair truss in a fully unfolded state.

[0035] Figure 18It is the portable hanging chair truss of the present invention. The auxiliary leg tube is horizontally and unilaterally supported and hinged to the upper part of the main tube. The longitudinal folding device C is adopted, and the two-side horizontal folding structure B is used. With the auxiliary leg tube rigidifying device, it is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0036] Figure 19 It is Figure 15 the portable hanging chair truss in

[0037] Figure 20 It is Figure 16 the portable hanging chair truss in

[0038] Figure 21 It is Figure 19 the portable hanging chair truss in

[0039] Figure 22 It is the portable hanging chair truss of the present invention. The auxiliary leg tube is hinged to the upper end of the main tube on one side. The longitudinal folding device D is adopted, and the two-side horizontal folding structure B is used. With the auxiliary leg tube rigidifying device, it is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0040] Figure 23 It is the portable hanging chair truss of the present invention. The tops of the main tube and the auxiliary leg tube are open. The longitudinal folding device D is adopted and symmetrically arranged, and the two-side horizontal folding structure D is used. It is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0041] Figure 24 It is the portable hanging chair truss of the present invention. The auxiliary leg tube is hinged to the main tube on one side through a sliding sleeve. The longitudinal folding device D is adopted, and the two-side horizontal folding structure A is used. With the auxiliary leg tube rigidifying device and the top unfolding and folding device, and the rigid locking tube, it is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0042] Figure 25 It is the portable hanging chair truss of the present invention. The auxiliary leg tube is horizontally and unilaterally hinged to the upper part of the main tube. The longitudinal folding device D is adopted, and the two-side horizontal folding structure B is used. With the auxiliary leg tube rigidifying device and the top unfolding and folding device, and the sunshade fabric, it is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0043] Figure 26 It is Figure 22 the portable hanging chair truss in

[0044] Figure 27 It is Figure 24 the portable hanging chair truss in

[0045] Figure 28It is the portable hanging chair truss of the present invention. The auxiliary leg tube is hinged to the upper part of the main tube transversely on one side. It adopts the longitudinal folding device Wu, the transverse folding structure B on both sides, is equipped with the rigidifying device for the auxiliary leg tube, the top unfolding and folding device, the sunshade fabric, and the axonometric stereo view of the portable hanging chair truss in the fully unfolded state.

[0046] Figure 29 It is Figure 28 the portable hanging chair truss in

[0047] Figure 30 It is the portable hanging chair truss of the present invention. The auxiliary leg tube is hinged to the upper end of the main tube on one side. It adopts the longitudinal folding device Ji and is symmetrically arranged, and the transverse folding structure D on both sides. The axonometric stereo view of the portable hanging chair truss in the fully unfolded state.

[0048] Figure 31 It is the portable hanging chair truss of the present invention. The auxiliary leg tube is hinged to the upper end of the main tube on one side. It adopts the longitudinal folding device Ji, and the transverse folding structure Wu on both sides. The axonometric stereo view of the portable hanging chair truss in the fully unfolded state.

[0049] Figure 32 It is Figure 30 the portable hanging chair truss in

[0050] Figure 33 It is Figure 31 the portable hanging chair truss in

[0051] Figure 34 It is the portable hanging chair truss of the present invention. The auxiliary leg tube is hinged to the upper end of the main tube on one side. It adopts the longitudinal folding device Bing, and the transverse folding structure B on both sides. It is equipped with the rigidifying device for the auxiliary leg tube. The axonometric stereo view of the portable hanging chair truss in the fully unfolded state.

[0052] Figure 35 It is the portable hanging chair truss of the present invention. The auxiliary leg tube is hinged to the sliding sleeve of the main tube on one side. It adopts the longitudinal folding device Geng, and the transverse folding structure A on both sides. It is equipped with the rigidifying device for the auxiliary leg tube, the top unfolding and folding device, and the rigid locking tube. The axonometric stereo view of the portable hanging chair truss in the fully unfolded state.

[0053] Figure 36 It is Figure 34 the portable hanging chair truss in

[0054] Figure 37 It is Figure 35 the portable hanging chair truss in

[0055] Figure 38This is the portable hanging chair truss of the present invention. Auxiliary leg tubes are hinged on both sides of the main pipe sliding sleeve. With longitudinal folding device A, it is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0056] Figure 39 is Figure 38 the portable hanging chair truss in

[0057] Figure 40 This is the portable hanging chair truss of the present invention. Auxiliary leg tubes are hinged on both sides of the main pipe sliding sleeve. With longitudinal folding device C, the sliding sleeve push-pull tube is hinged to the sliding sleeve and the rigid short tube. It is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0058] Figure 41 is Figure 40 the portable hanging chair truss in

[0059] Figure 42 This is the portable hanging chair truss of the present invention. Auxiliary leg tubes are hinged on both sides of the main pipe sliding sleeve. With longitudinal folding device D, the sliding sleeve push-pull tube is hinged to the sliding sleeve and the rigid long tube. It is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0060] Figure 43 is Figure 42 the portable hanging chair truss in

[0061] Figure 44 This is the portable hanging chair truss of the present invention. Auxiliary leg tubes are hinged on both sides of the main pipe sliding sleeve. With longitudinal folding device E, it is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0062] Figure 45 is Figure 44 the portable hanging chair truss in

[0063] Figure 46 This is the portable hanging chair truss of the present invention. Auxiliary leg tubes are hinged on both sides of the main pipe sliding sleeve. With longitudinal folding device F, the sliding sleeve push-pull tube is hinged to the sliding sleeve and the rigid long tube. It is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0064] Figure 47 is Figure 46 the portable hanging chair truss in

[0065] Figure 48 This is the portable hanging chair truss of the present invention. Auxiliary leg tubes are hinged on both sides of the main pipe sliding sleeve. With longitudinal folding device G, both the rigid short tube and the sliding sleeve push-pull tube are hinged to the sliding sleeve. It is an axonometric solid view of the portable hanging chair truss in a fully unfolded state.

[0066] Figure 49 is Figure 48 the axonometric stereo view of the portable hanging chair truss in Figure 48 in a semi-folded state.

[0067] Figure 50 is the top unfolding and folding device of the single socket coupling sleeve of the portable hanging chair truss of the present invention, and is the axonometric stereo view in a fully unfolded state.

[0068] Figure 51 is the top unfolding and folding device of the double socket coupling sleeve of the portable hanging chair truss of the present invention, and is the axonometric stereo view in a fully unfolded state.

[0069] Figure 52 is Figure 50 the axonometric stereo view of the top unfolding and folding device of the single socket coupling sleeve of the portable hanging chair truss in Figure 50 in a fully folded state.

[0070] Figure 53 is Figure 50 the partial enlarged view of the end structure of the top unfolding and folding device of the single socket coupling sleeve of the portable hanging chair truss in Figure 50 when in a fully unfolded state.

[0071] Figure 54 is Figure 51 the partial enlarged view of the end structure of the top unfolding and folding device of the double socket coupling sleeve of the portable hanging chair truss in Figure 51 when in a fully unfolded state. Detailed implementation manners

[0072] Refer to Figures 1 to 37 and Figures 50 to 54, The specific implementation of the first solution of the portable hanging chair truss includes: a main pipe (1), an auxiliary leg pipe (2), a sliding sleeve A (3), an auxiliary leg push-pull pipe (4), a main pipe foot plate (5), a support (6), an auxiliary foot plate (7), a hanging chair fabric (8), a limiting member (11), a groove (12), a sliding sleeve B (15), a sliding sleeve C (16), a sliding sleeve D (17). In the longitudinal direction of the portable hanging chair truss, that is, in the direction of the two main pipes facing the truss, there can be seven different folding devices, which are: longitudinal folding device A, longitudinal folding device B, longitudinal folding device C, longitudinal folding device D, longitudinal folding device E, longitudinal folding device F, longitudinal folding device G. In the transverse direction on both sides of the portable hanging chair truss, that is, in the depth direction on both sides of the portable hanging chair truss, there can be five different folding devices: two-side transverse folding structure A, two-side transverse folding structure B, two-side transverse folding structure C, two-side transverse folding structure D, two-side transverse folding structure E. There is an auxiliary leg pipe rigidification structure under the front two auxiliary legs. The portable hanging chair truss for double or multiple people also includes: a top unfolding device, a longitudinal top pipe (13), a rigid locking pipe (14), a sunshade fabric (9), a connecting sleeve (10). Its characteristics are that on one side in the transverse direction of the two main pipes, that is, in the depth direction of the portable hanging chair truss to one side, the auxiliary leg pipe is hinged to the main pipe either at the top of the main pipe, or in the middle, upper or end part of the main pipe, or is hinged to the sliding sleeve A placed on the main pipe, or the main pipe and the auxiliary leg pipe do not need to be directly hinged and are in an open state at their upper ends. After unfolding, the two main pipes and the auxiliary leg pipes form a set of the same triangular support posture with the ground respectively. The top of the main pipe is inserted into the sleeve hole of the connecting sleeve (10). For a single-person portable hanging chair truss, its seat fabric is directly connected to the connecting sleeve with high-strength rope or ribbon. For a double-person portable hanging chair truss, it can be connected through a single hanging ring or a double hanging ring installed on the longitudinal top pipe, and then connected with an iron ring chain or high-strength rope to form a hanging chair. In the longitudinal direction between the two side main pipes, that is, in the direction of the two main pipes facing the portable hanging chair truss, either the longitudinal folding device A, or the longitudinal folding device B, or the longitudinal folding device C, or the longitudinal folding device D, or the longitudinal folding device E, or the longitudinal folding device F, or the longitudinal folding device G is installed;Between the main pipe and the auxiliary leg pipe which are hinged or non-hinged at the upper part, either the transverse folding structure A on both sides is installed, or the transverse folding structure B on both sides is installed, or the transverse folding structure C on both sides is installed, or the transverse folding structure D on both sides is installed, or the transverse folding structure E on both sides is installed. The longitudinal folding device B described here includes: the main pipe (1), the auxiliary leg pipe (2), the sliding sleeve A (3), the auxiliary leg push-pull pipe (4), the main pipe foot plate (5), the support (6), the limiting member (11), the straight cross pipe (25). The upper end of the auxiliary leg pipe is hinged above or at the upper end of the main pipe. One end of the auxiliary leg push-pull pipe is hinged to the sliding sleeve A on the main pipe, and the other end is either hinged to the support fixed on the auxiliary leg pipe or directly hinged to the auxiliary leg pipe. The two straight cross pipes are hinged to each other in the middle. The lower ends of the two straight cross pipes are either respectively hinged to the main pipe foot plates at the lower ends of both main pipes or directly hinged to the support at the lower part of the main pipe. The upper ends of the two straight cross pipes are either respectively hinged to the sliding sleeve A hinged to the auxiliary leg push-pull pipe on the main pipe or directly hinged to the auxiliary leg push-pull pipe hinged to the sliding sleeve A. One end of the auxiliary leg push-pull pipe is hinged to the sliding sleeve A, and the other end is either hinged to the support fixed on the auxiliary leg pipe or directly hinged to the auxiliary leg pipe. The two straight cross pipes and the two auxiliary leg push-pull pipes jointly push and pull the sliding sleeve A to slide up and down along the main pipe. When the sliding sleeve A is lifted upward or the upward crossing angle of the two straight cross pipes is reduced, under the action of the movement of the cross structure, the two main pipes will gradually move closer to the middle. Finally, the two main pipes achieve parallel folding and folding in the longitudinal direction. At the same time, the upward moving sliding sleeve A drives the auxiliary leg push-pull pipe to rotate around its hinge point, so that the auxiliary leg pipe also rotates inward around its hinge point with the main pipe until the auxiliary leg pipe and the main pipe tend to be parallel. On the contrary, when the sliding sleeve A is pushed downward or the upward crossing angle of the two straight cross pipes is increased, under the action of the movement of the cross structure, the two main pipes will gradually expand parallel to both sides. At this time, the downward moving sliding sleeve A will drive the auxiliary leg push-pull pipe to rotate around its hinge point, so as to push the auxiliary leg pipe to rotate outward around its hinge point with the main pipe until the sliding sleeve A contacts the limiting member and is limited by the limiting member. Finally, the auxiliary leg pipe and the main pipe are unfolded in a triangle to achieve full unfolding. Between the lower parts of the two side auxiliary leg pipes, either the auxiliary leg pipe rigidifying device is installed or not installed. When different longitudinal folding devices are matched with different transverse folding structures on both sides to make the portable hanging chair truss have sufficient system rigidity, the auxiliary leg pipe rigidifying device can not be installed, and installing the auxiliary leg pipe rigidifying device helps to improve the system rigidity of the portable hanging chair truss. Each longitudinal folding device can be installed on one side of the two main pipes, or the longitudinal folding devices A, B, C, D, E, F, G can be symmetrically and mirror-installed on the auxiliary leg pipe, which can further improve the system rigidity of the portable hanging chair truss. At the top of the portable hanging chair truss for two or more people, a top unfolding and folding device is configured. Between the longitudinal top pipe and the main pipe or the auxiliary leg pipe in the top unfolding and folding device, there is a rigid locking pipe which is manually thread-connected in a triangle for rigid fixation.;

[0073] Further, the longitudinal folding device A includes: a rigid horizontal pipe A (21), a rigid horizontal pipe B (22), a rigid hinge (23), a hole A (23.1), an inclined cross pipe (24), a hole B (24.1), a groove (12). The rigid horizontal pipe B is hinged to the hole A of the rigid hinge fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the two side main pipes or to the supports fixed on the two side main pipes. After the two inclined cross pipes are hinged to each other, they are then hinged to the hole B in the middle parts of the rigid horizontal pipe A and the rigid horizontal pipe B. Finally, the two inclined cross pipes are either directly hinged to the sliding sleeve A installed on the main pipe or hinged to the upper end of the auxiliary leg pipe near the sliding sleeve A, and the auxiliary leg pipe is then hinged to the sliding sleeve A installed on the main pipe. The two inclined cross pipes push and pull the sliding sleeve A to slide up and down along the main pipe. When the rigid hinge is lifted upward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined cross pipes will move upward, pushing the sliding sleeve A to slide upward, and the two side main pipes will gradually move closer to the middle, and finally the folding in the longitudinal direction is achieved. On the contrary, when the sliding sleeve A is pushed downward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, the two side main pipes will separate to both sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with coaxial or parallel axes. At the same time, the sliding sleeve A slides down to be limited by the limiting member to achieve full expansion. The longitudinal folding device C includes: a rigid hinge (23), a hole A (23.1), a rigid long tube (26), a rigid short tube (27), a sliding sleeve push-pull tube (28), a groove (12), a limiting member (11), a rigid hinge member is fixed either on the rigid short tube or on the rigid long tube. The rigid short tube and the rigid long tube are hinged through hole A on the rigid hinge member. The two rigid long tubes are respectively hinged to the main pipe foot plates or supports at the lower ends of the two side main pipes, or directly hinged to the lower part of the main pipe. Then, the two rigid long tubes are hinged to each other at their middle parts. After the two rigid short tubes are hinged to the rigid long tubes through hole A of the rigid hinge member, they are respectively hinged to the supports fixed on the two main pipes or directly hinged to the main pipes. One end of the sliding sleeve push-pull tube is hinged to sliding sleeve A installed on the main pipe, and the other end is hinged to either the rigid long tube or the support fixed thereon, or hinged to the rigid short tube, pushing and pulling sliding sleeve A to slide up and down along the main pipe; when reducing the upward crossing angle between the two rigid long tubes, under the action of the cross-hinged structure, through hole A of the rigid hinge member, it drives the rigid short tube to rotate upward around the hinge point on the main pipe, and the two side main pipes will gradually move closer to the middle, and finally achieve folding in the longitudinal direction, and the sliding sleeve push-pull tube can also push or pull sliding sleeve A on the main pipe to slide upward; conversely, when pushing downward and increasing the upward crossing angle between the rigid long tubes, under the action of the cross-hinged structure, through hole A of the rigid hinge member, it drives the rigid short tube to rotate downward around the hinge point on the main pipe, and the two side main pipes will gradually expand to both sides until the rigid short tube or the rigid long tube falls into the groove of the rigid hinge member, so that the axes of the rigid short tube and the rigid long tube are concentric or parallel. At this time, sliding sleeve A will also slide downward to the support or the limiting member and stop, achieving full expansion; the longitudinal folding device D includes: a rigid horizontal tube A (21), a rigid horizontal tube B (22), a rigid hinge member (23), hole A (23.1), a sliding sleeve push-pull tube (28), an inclined tube A (29), hole C)(29.1), the groove (12), the rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged directly to the two main pipes or to the supports fixed on the main pipes. After one ends of the two inclined pipes A are respectively hinged to the lower ends of the main pipes or the foot plates of the main pipes or the supports, the other ends are then hinged upward to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes A do not need to be hinged to each other in the middle. One end of each of the two sliding sleeve push-pull pipes is hinged to the two inclined pipes A or the supports thereon, or is directly hinged to the rigid horizontal pipe A and the rigid horizontal pipe B respectively or through the supports thereon, and the other end is then hinged to the sliding sleeve A installed on the main pipe. The push-pull sliding sleeve A slides up and down along the main pipe. When the rigid hinge piece is lifted upward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, it will drive the inclined pipe A to move towards the middle, and the two main pipes on both sides will gradually move closer to the middle. The sliding sleeve push-pull pipe will also push the sliding sleeve A on the main pipe to move upward, and finally realize the folding in the longitudinal direction; conversely, when the rigid hinge piece is pushed downward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, it will drive the inclined pipe A to move towards both sides, so that the two main pipes on both sides are separated. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with coaxial or parallel axes. The sliding sleeve push-pull pipe also pulls the sliding sleeve on the main pipe downward to slide to the support or the limit piece and stop, and finally realizes the full expansion; the longitudinal folding device E includes: the rigid horizontal pipe A (21), the rigid horizontal pipe B (22), the rigid hinge piece (23), the hole A (23.1), the hole C (29.1), the inclined pipe B (30), the hole D (30.1), The rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the sliding sleeve A placed on the two main pipes. There is no need to configure a sliding sleeve push-pull pipe. One end of each of the two inclined pipes B is respectively hinged to the lower end of the main pipe or the main pipe foot plate or the support, and then the other end crosses upward and is hinged to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes B cross and are hinged to each other through the hole D in their middle parts; when the rigid hinge piece is lifted upward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined pipe B will move towards the middle. At the same time, without an additional sliding sleeve push-pull pipe, the rigid horizontal pipe A and the rigid horizontal pipe B can drive the sliding sleeve A on the main pipe to move upward, driving the two side main pipes to gradually move closer to the middle, and finally realizing folding in the longitudinal direction; conversely, when the rigid hinge piece is pushed downward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, it will drive the inclined pipe B to move towards both sides. The sliding sleeve A hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipe will move downward, so that the two side main pipes separate to both sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with the same axis or parallel axes. At the same time, the sliding sleeve A also slides downward to the stopper, and finally realizes full expansion; The longitudinal folding device F includes: a rigid horizontal pipe A (21), a rigid horizontal pipe B (22), a rigid hinge piece (23), a hole A (23.1), a sliding sleeve push-pull pipe (28), a hole C (29.1), an inclined pipe B (30), a hole D (30.1), further comprising: sliding sleeve A (3) or sliding sleeve B (15), sliding sleeve C (16), the rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A, the other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the sliding sleeve C placed on the two main pipes, one ends of the two inclined pipes B are respectively hinged to the lower end of the main pipe or the main pipe foot plate or the support, and then the other ends cross upward and are hinged to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B, and the two inclined pipes B cross each other through the hole D in the middle, at the same time, one ends of the two sliding sleeve push-pull pipes are directly hinged to the two inclined pipes B or hinged to the support fixed on the two inclined pipes B or directly hinged to the rigid horizontal pipe A and the rigid horizontal pipe B or the support thereon respectively, and the other ends are hinged to the sliding sleeve B or sliding sleeve A installed on the main pipe, and the sliding sleeve B or sliding sleeve A is pushed and pulled to slide up and down along the main pipe; when the rigid hinge piece is lifted upward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined pipe B will be driven to move toward the middle, and the sliding sleeve C hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipe will finally move upward, driving the two main pipes on both sides to gradually move closer to the middle. At this time, the sliding sleeve push-pull pipe will also push the sliding sleeve B or sliding sleeve A on the main pipe to move upward, and finally realize the folding in the longitudinal direction; conversely, when the rigid hinge piece is pushed downward or the included angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, the inclined pipe B will be driven to move to both sides, and the sliding sleeve C hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipe will move downward, so that the two main pipes on both sides are separated to both sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with the same axis or parallel axes. At the same time, the sliding sleeve push-pull pipe pulls the sliding sleeve B or sliding sleeve A on the main pipe downward to move downward until it reaches the sliding sleeve C, and finally realizes the full expansion; the longitudinal folding device G includes: a rigid hinge piece (23), hole A (23...1), a rigid long tube (26), a rigid short tube (27), a sliding sleeve push-pull tube (28), and also includes a sliding sleeve A (3), a groove (12). The rigid hinge member is fixed either on the rigid short tube or on the rigid long tube. The rigid short tube and the rigid long tube are hinged through hole A on the rigid hinge member. The two rigid long tubes are respectively hinged to the main pipe foot plates or supports at the lower ends of the two side main pipes, or directly hinged to the lower part of the main pipe. Then, they are hinged to each other at their middle parts. After the two rigid short tubes are hinged to the rigid long tubes through hole A of the rigid hinge member, they are respectively hinged to the sliding sleeve A installed on the two main pipes, driving the sliding sleeve A to slide up and down along the main pipe. One end of the sliding sleeve push-pull tube is hinged to the rigid long tube or the support fixed thereon, and the other end is also hinged to the sliding sleeve A installed on the two main pipes. That is to say, both the sliding sleeve push-pull tube and the rigid short tube are hinged to the sliding sleeve A. The sliding sleeve push-pull tube and the rigid short tube jointly push and pull the sliding sleeve A to slide up and down along the main pipe. When the upward crossing angle between the two rigid long tubes is reduced, under the action of the cross-hinged structure, through hole A of the rigid hinge member, it drives the rigid short tube to rotate and move upward around the hinge point of the sliding sleeve A on the main pipe. At the same time, under the action of the sliding sleeve push-pull tube hinged to the rigid long tube, the sliding sleeve A also moves upward, driving the two side main pipes to gradually move closer to the middle, and finally realizing folding in the longitudinal direction. In this process, when the sliding sleeve push-pull tube pushes the sliding sleeve A on the main pipe to slide upward, it also drives the rigid short tube hinged to the sliding sleeve A to move upward. On the contrary, when pushing downward and increasing the upward crossing angle between the two rigid long tubes, under the action of the cross-hinged structure, through hole A of the rigid hinge member, it drives the rigid short tube to rotate and move downward around the hinge point of the sliding sleeve A on the main pipe. At the same time, under the action of the sliding sleeve push-pull tube hinged to the rigid long tube, the sliding sleeve A also moves downward, driving the two side main pipes to gradually expand to both sides, and finally realizing expansion in the longitudinal direction. In this process, when the sliding sleeve push-pull tube pulls the sliding sleeve A on the main pipe to slide downward; it also drives the rigid short tube hinged to the sliding sleeve A to move downward; until the rigid short tube or the rigid long tube falls into the groove of the rigid hinge member, making the axes of the rigid short tube and the rigid long tube concentric or parallel. At the same time, the sliding sleeve A that is sliding downward is also in a state of being limited by the limiting member, realizing full expansion.

[0074] Further, the two-side horizontal folding structure A includes: a main pipe (1), an auxiliary leg pipe (2), a sliding sleeve A (3), an auxiliary leg push-pull pipe (4). The auxiliary leg pipe is hinged to the sliding sleeve A placed on the main pipe. One end of the auxiliary leg push-pull pipe is directly hinged to the main pipe or hinged to the main pipe foot plate or support fixed on the main pipe, and the other end of the auxiliary leg push-pull pipe is directly hinged to the auxiliary leg pipe or hinged to the support fixed on the auxiliary leg pipe. A limiting member for the downward movement of the sliding sleeve A is installed at the lower part of the main pipe. When the sliding sleeve A on the main pipe slides upward, the hinged auxiliary leg pipe also moves upward, driving the auxiliary leg push-pull pipe to rotate upward until the auxiliary leg pipe and the auxiliary leg push-pull pipe tend to be parallel, realizing two-side horizontal folding. On the contrary, when the sliding sleeve A on the main pipe moves downward, the hinged auxiliary leg pipe also moves downward, driving the auxiliary leg push-pull pipe to rotate downward until the sliding sleeve A slides to the limiting member, thus realizing the full expansion of the two-side auxiliary leg pipes. The two-side horizontal folding structure B includes: a main pipe (1), an auxiliary leg pipe (2), a sliding sleeve A (3), an auxiliary leg push-pull pipe (4). The auxiliary leg pipe is directly hinged to the main pipe at the upper end or upper part or hinged through the support fixed on the upper part of the main pipe. One end of the auxiliary leg push-pull pipe is hinged to the sliding sleeve A on the main pipe, and the other end of the auxiliary leg push-pull pipe is directly hinged to the auxiliary leg pipe or hinged to the support fixed on the auxiliary leg pipe. A limiting member for the downward movement of the sliding sleeve A is installed at the lower part of the main pipe. When the sliding sleeve A on the main pipe is pushed upward, the hinged auxiliary leg push-pull pipe also moves upward, driving the auxiliary leg pipe hinged to the main pipe to rotate towards the main pipe until the auxiliary leg pipe and the auxiliary leg push-pull pipe tend to be parallel, realizing two-side horizontal folding. On the contrary, when the sliding sleeve A on the main pipe moves downward, the hinged auxiliary leg push-pull pipe also moves downward, driving the auxiliary leg pipe to rotate away from the main pipe until the sliding sleeve A slides to the limiting member, thus realizing the full expansion of the two-side auxiliary leg pipes. The two-side horizontal folding structure C includes: a main pipe (1), an auxiliary leg pipe (2), a sliding sleeve A (3), an auxiliary leg push-pull pipe (4), a hole E (4.1), The auxiliary leg tube and the main tube are not hinged at their upper parts. The two are inclined to each other in a triangular non-hinged open state. The auxiliary leg push-pull tubes are arranged in a cross pattern. At the upper part of their middle, they are hinged with Kong Wu. The upper ends of the auxiliary leg push-pull tubes are respectively hinged with Slide Sleeve A configured on the main tube and the auxiliary leg tube. The lower ends of the two auxiliary leg push-pull tubes are respectively hinged with a foot plate or a support fixed at the lower ends of the main tube and the auxiliary leg tube. Limiters for the downward movement of Slide Sleeve A are installed at the lower parts of the main tube and the auxiliary leg tube; when Slide Sleeve A on the main tube slides upward, the auxiliary leg push-pull tube hinged with Slide Sleeve A also moves upward. At this time, it drives another auxiliary leg push-pull tube that is cross-hinged with it at Kong Wu to make the same movement, thereby pushing Slide Sleeve A on the auxiliary leg tube to slide upward as well, causing the main tube and the auxiliary leg tube to approach each other until the main tube and the auxiliary leg tube are nearly parallel, achieving the lateral folding on both sides; conversely, when pushing Slide Sleeve A on the main tube or the auxiliary leg tube to move downward, the cross-hinged auxiliary leg push-pull tubes also move downward, driving the auxiliary leg tubes to move away from the main tube until Slide Sleeve A on the main tube or the auxiliary leg tube slides to the limiter, thereby realizing the full deployment of the auxiliary leg tubes on both sides. The lateral folding structure Ding on both sides includes: the main tube (1), the auxiliary leg tube (2), Slide Sleeve A (3), the auxiliary leg push-pull tube (4). The auxiliary leg tube or the main tube is directly hinged at the upper end or upper part, or is hinged through a support fixed at the upper part of the main tube. The two auxiliary leg push-pull tubes are arranged in a cross pattern, but they are not cross-hinged with each other. At this time, the auxiliary leg push-pull tubes only have hinge holes processed at both ends. The upper ends of the two auxiliary leg push-pull tubes are respectively hinged with Slide Sleeve A on the main tube and the auxiliary leg tube. The other ends of the two auxiliary leg push-pull tubes are respectively at the lower ends of the main tube and the auxiliary leg tube, or are hinged with the main tube foot plate and the auxiliary foot plate fixed to the main tube and the auxiliary leg tube, or are hinged with a support fixed on the main tube and the auxiliary leg tube. Limiters for restricting the downward movement of Slide Sleeve A are installed at the lower parts of the main tube and the auxiliary leg tube; when Slide Sleeve A on the main tube slides upward, the auxiliary leg push-pull tube hinged with it also moves upward, driving the auxiliary leg tube to rotate inward. At this time, another auxiliary leg push-pull tube that is not hinged in the middle with it can only make a similar movement, pushing Slide Sleeve A on the auxiliary leg tube to slide upward as well, causing the main tube and the auxiliary leg tube to approach each other until the main tube and the auxiliary leg tube are nearly parallel, achieving the lateral folding on both sides; conversely, when pushing Slide Sleeve A on the main tube or the auxiliary leg tube to move downward, the cross-arranged but not hinged auxiliary leg push-pull tubes also move downward, driving the auxiliary leg tubes to rotate away from the main tube until Slide Sleeve A on the main tube and the auxiliary leg tube slides to the limiter, thereby realizing the full deployment of the auxiliary leg tubes on both sides; The lateral folding structure Wu on both sides includes: the main tube (1), the auxiliary leg tube (2), Slide Sleeve A (3) or Slide Sleeve B (15), the auxiliary leg push-pull tube (4), Kong Wu (4.1), the sliding sleeve D (17), the auxiliary leg tube is directly hinged to the main tube at its upper end or upper part, or is hinged through a support fixed to the upper part of the main tube. The auxiliary leg push-pull tubes are arranged in a cross state, and there are holes E at the upper part of their middle for mutual hinge with each other. The upper ends of the two auxiliary leg push-pull tubes are respectively hinged to the sliding sleeve B or the sliding sleeve A arranged above the main tube and the auxiliary leg tube, and the lower ends of the two auxiliary leg push-pull tubes are respectively hinged to the sliding sleeve D arranged below the main tube and the auxiliary leg tube. Limit members for restricting the downward movement of the sliding sleeve B or the sliding sleeve A or the sliding sleeve D are installed in the middle and lower parts of the main tube or the auxiliary leg tube; when the sliding sleeve B or the sliding sleeve A moves upward, due to the cross-hinged structure, it drives the auxiliary leg push-pull tubes and the sliding sleeve D to move upward at the same time. At the same time, the upward angle of the auxiliary leg push-pull tubes gradually decreases, so as to pull the auxiliary leg tube to rotate inward until the auxiliary leg tube tends to be parallel to the main tube, reaching the fully folded state; on the contrary, when the sliding sleeve B or the sliding sleeve A moves downward, due to the cross-hinged structure, it pushes the auxiliary leg push-pull tubes and the sliding sleeve D to move downward at the same time. At the same time, the upward angle of the auxiliary push-pull tubes gradually increases, so as to push the auxiliary leg tube to rotate outward to reach the fully unfolded state. At this time, the unfolded portable hanging chair truss has relatively large system rigidity under the action of the transverse folding structure E on both sides.

[0075] Further, the longitudinal folding device A can be matched with the transverse folding structures A on both sides, or the transverse folding structures B on both sides, or the transverse folding structures C on both sides, or the transverse folding structures D on both sides, or the transverse folding structures E on both sides; the longitudinal folding device B can be matched with the transverse folding structures B on both sides, or the transverse folding structures C on both sides, or the transverse folding structures D on both sides, or the transverse folding structures E on both sides; the longitudinal folding device C can be matched with the transverse folding structures A on both sides, or the transverse folding structures B on both sides, or the transverse folding structures C on both sides, or the transverse folding structures D on both sides, or the transverse folding structures E on both sides; the longitudinal folding device D can be matched with the transverse folding structures A on both sides, or the transverse folding structures B on both sides, or the transverse folding structures C on both sides, or the transverse folding structures D on both sides, or the transverse folding structures E on both sides; the longitudinal folding device E can be matched with the transverse folding structures A on both sides, or the transverse folding structures B on both sides, or the transverse folding structures C on both sides, or the transverse folding structures D on both sides, or the transverse folding structures E on both sides; the longitudinal folding device F can be matched with the transverse folding structures A on both sides, or the transverse folding structures B on both sides, or the transverse folding structures C on both sides, or the transverse folding structures D on both sides, or the transverse folding structures E on both sides; the longitudinal folding device G can be matched with the transverse folding structures A on both sides, or the transverse folding structures B on both sides, or the transverse folding structures C on both sides, or the transverse folding structures D on both sides, or the transverse folding structures E on both sides. Under the condition that the structural dimensions permit, 34 longitudinal and transverse folding methods of the portable hanging chair truss can be matched and formed, so that the folding and unfolding of the portable hanging chair truss are more diversified.

[0076] Further, the auxiliary leg tube rigidifying device, the auxiliary rigid tube A (61), the auxiliary rigid tube B (62), the auxiliary rigid hinge member (63), the hole F (63.1), and the groove (12) include: One end of the auxiliary rigid tube B is hinged to the hole F on the auxiliary rigid hinge member fixed to one end of the auxiliary rigid tube A. The other ends of the auxiliary rigid tube A and the auxiliary rigid tube B are respectively hinged to the auxiliary foot plate or the support at the lower end of the auxiliary leg tube, or directly hinged; When folding the truss of the portable hanging chair, push the auxiliary rigid hinge member inward or rotate the auxiliary rigid tube A and the auxiliary rigid tube B inward, then the self-locking at the dead point is released, and the folding can be carried out in the manner of the aforementioned longitudinal folding devices A, B, C, D, E, F, G and the two-side transverse folding structures A, B, C, D, E, and the auxiliary leg tube rigidifying device will gradually retract upward until it tends to be parallel to the auxiliary leg tube; On the contrary, when unfolding the truss of the portable hanging chair, under the action of the aforementioned longitudinal folding devices A, B, C, D, E, F, G and the two-side transverse folding structures A, B, C, D, E, the auxiliary rigid hinge member will automatically move downward, and the auxiliary rigid tube A and the auxiliary rigid tube B will also rotate downward until the straight tube part of the auxiliary rigid tube B falls into the groove of the rigid auxiliary hinge fixed on the auxiliary rigid tube A, making it in a self-locking state at the dead point. At this time, the auxiliary rigid tube A and the auxiliary rigid tube B are also in a horizontal state with a 180-degree coaxial line or parallel axes, and the auxiliary rigid tube A and the auxiliary rigid tube B are in a 90-degree orthogonal state with the auxiliary leg tube. The purpose of using the auxiliary leg tube rigidifying device at the lower end of the front auxiliary leg tube is to improve the portable hanging chair truss so that when shaking the hanging chair, people's feet are not easily rubbed.

[0077] Furthermore, the top unfolding and folding device includes: a coupling sleeve (10), a longitudinal top pipe (13), a rigid locking pipe (14), a double sling (40), a sliding support (41), a single sling (42), a support rod (43), a push-pull rod (44), a tensioning rope (45), a ribbon (46), a rope and belt connector (47), and a support member (48). The coupling sleeve is fixed on both sides of the longitudinal top pipe. A double sling is arranged in the middle of the longitudinal top pipe for hanging the fabric of the two hanging chairs on the side close to one side. Single slings are arranged on both sides of the longitudinal top pipe for hanging the fabric of the two hanging chairs on the other side. Support members are fixed at both ends of the longitudinal top pipe or outside the coupling sleeve. Support rods are symmetrically hinged on the upper edge of the support members. A sliding support is installed on the longitudinal top pipe inside the single slings arranged on both sides of the longitudinal top pipe. One end of the symmetrically arranged push-pull pipes is hinged to the sliding support, and the other end is hinged to the support rod. Manually push and pull the sliding support along the longitudinal top pipe direction, and the push-pull rod hinged to it can push and pull the support rod to unfold and fold. The top unfolding and folding device is provided with rope and belt connectors at the four corners. An elastic tensioning rope is arranged horizontally, and a non-elastic ribbon or rope is arranged longitudinally. When moving the sliding support to make the push-pull pipe push the support rod to unfold the top unfolding and folding device, the elastic tensioning rope has an effect of passing through a dead point, that is, after unfolding, it can play a role in tightening the support rod in the unfolded state and is not easily automatically retracted and folded. The four corners of the sunshade fabric are connected to the rope and belt connectors, and the periphery of the sunshade fabric is sewn and connected to the ribbon, rope, and tensioning rope, and can be unfolded and folded along with the folding and unfolding of the support rod.

[0078] Furthermore, for the coupling sleeve (10), its connection with the main pipe and the connection between the main pipe in an open state and the top of the auxiliary leg pipe can adopt either a single-hole insertion form or a double-hole insertion form.

[0079] Refer to Figures 38 to 49, The specific implementation of the second solution of the portable hanging chair truss includes: a main pipe (1), an auxiliary leg pipe (2), a sliding sleeve e (18), an auxiliary leg push-pull pipe (4), a main pipe foot plate (5), a support (6), an auxiliary foot plate (7), a hanging chair fabric (8), a connecting sleeve (10), a limiting member (11), a groove (12), a longitudinal folding device A, a longitudinal folding device C, a longitudinal folding device D, a longitudinal folding device E, a longitudinal folding device F, a longitudinal folding device G. It further includes a sliding sleeve c (16) and a sliding sleeve f (19). The characteristics are as follows: The two main pipes are arranged vertically or longitudinally outwardly inclined on both sides in the longitudinal direction of the portable hanging chair truss. The auxiliary leg pipes and the auxiliary leg push-pull pipes are symmetrically arranged in the transverse direction on both sides of the main pipes. The upper ends of the two auxiliary leg pipes are hinged to the sliding sleeve e or the sliding sleeve f assembled on the main pipe, and are arranged horizontally. The auxiliary leg push-pull pipe is hinged to the main pipe foot plate or the support fixed at the lower end of the main pipe. The other end of the auxiliary leg push-pull pipe is hinged to the auxiliary foot plate at the lower end of the auxiliary leg pipe or the support hinged to the lower part of the auxiliary leg pipe, or is directly hinged at the lower part of the auxiliary leg pipe. Between the two main pipes on both sides, either the longitudinal folding device A, or the longitudinal folding device C, or the longitudinal folding device D, or the longitudinal folding device E, or the longitudinal folding device F, or the longitudinal folding device G is installed. These longitudinal folding devices are all compound cross rigid hinges. When changing the included angle of the related pipe fittings of each longitudinal folding device's rigid hinge, on the one hand, it can make the main pipes in the longitudinal direction fold inwards towards the middle or unfold outwards, and on the other hand, it can also simultaneously push the sliding sleeve e or the sliding sleeve f to move up and down along the main pipe, so that the auxiliary leg pipes in the transverse direction fold inwards or unfold outwards. When the straight pipe parts of the related rigid pipes fall into the groove, the portable hanging chair truss can be rigidly unfolded and in a self-locking state; The connecting sleeve (10) is sleeved on the top of the main pipe, and the connecting sleeve is connected to the seat fabric with a high-strength rope to form a hanging chair.

[0080] Further, the longitudinal folding device A includes: a rigid horizontal pipe A (21), a rigid horizontal pipe B (22), a rigid hinge (23), a hole A (23.1), an inclined cross pipe (24), a hole B (24.1), a groove (12). The rigid horizontal pipe B is hinged to the hole A of the rigid hinge on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the main pipes on both sides or to the supports fixed on the main pipes. After the two inclined cross pipes are hinged to each other, they are then hinged to the hole B in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. Finally, the two inclined cross pipes are hinged to the sliding sleeve E installed on the main pipe. The two inclined cross pipes push and pull the sliding sleeve E to slide up and down along the main pipe. When the rigid hinge is lifted upward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined cross pipes will move upward, pushing the sliding sleeve E to slide upward, and the main pipes on both sides will gradually move closer to the middle, finally achieving folding in the longitudinal direction. Conversely, when the sliding sleeve E is pushed downward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, the main pipes on both sides will separate. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with coaxial or parallel axes, in a self-locking state. At the same time, the sliding sleeve E slides downward to be limited by the limiting member, achieving full expansion. The longitudinal folding device C includes: a rigid hinge (23), a hole A (23.1), a rigid long tube (26), a rigid short tube (27), a sliding sleeve push-pull tube (28), a groove (12), a limiting member (11), the rigid hinge member is fixed either on the rigid short tube or on the rigid long tube. The rigid short tube and the rigid long tube are hinged through the hole A on the rigid hinge member. The two rigid long tubes are respectively hinged to the main pipe foot plate or the support at the lower ends of the two side main pipes, or directly hinged to the lower part of the main pipe. Then, the two rigid long tubes are hinged to each other at their middle parts. After the two rigid short tubes are hinged to the rigid long tubes through the hole A of the rigid hinge member, they are respectively hinged to the support fixed on the two main pipes or directly hinged to the main pipe. One end of the sliding sleeve push-pull tube is hinged to the sliding sleeve E installed on the main pipe, and the other end is hinged to either the rigid long tube or the support fixed thereon, or hinged to the rigid short tube, pushing and pulling the sliding sleeve E to slide up and down along the main pipe. When reducing the upward crossing angle of the two rigid long tubes, under the action of the cross-hinged structure, through the hole A of the rigid hinge member, it drives the rigid short tube to rotate upward around the hinge point on the main pipe, and the two side main pipes will gradually move closer to the middle, and finally achieve folding in the longitudinal direction. The sliding sleeve push-pull tube can then push or pull the sliding sleeve E on the main pipe to slide upward. On the contrary, when pushing down the rigid hinge member and increasing the upward crossing angle of the rigid long tubes, under the action of the cross-hinged structure, through the hole A of the rigid hinge member, it drives the rigid short tube to rotate downward around the hinge point on the main pipe, and the two side main pipes will gradually expand to both sides until the rigid short tube or the rigid long tube falls into the groove of the rigid hinge member, making the axes of the rigid short tube and the rigid long tube concentric or parallel. At this time, the sliding sleeve E will also slide downward to the support or the limiting member and stop, achieving full expansion. The longitudinal folding device D includes: a rigid horizontal tube A (21), a rigid horizontal tube B (22), a rigid hinge member (23), a hole A (23.1), a sliding sleeve push-pull tube (28), an inclined tube A (29), a hole C (29...1), groove (12), the rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged directly to the two main pipes or to the supports fixed on the main pipes. One ends of the two inclined pipes A are respectively hinged to the lower ends of the two side main pipes or the main pipe foot plates or the supports, and then the other ends are hinged upward to the holes C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes A do not need to be hinged to each other in the middle. One ends of the two sliding sleeve push-pull pipes are hinged to the two inclined pipes A, or to the supports on the two inclined pipes A, or are respectively hinged directly to the rigid horizontal pipe A and the rigid horizontal pipe B or the supports thereon. The other ends of the two sliding sleeve push-pull pipes are then hinged to the sliding sleeve E installed on the main pipe, and the sliding sleeve E is pushed and pulled to slide up and down along the main pipe; when the rigid hinge piece is lifted upward or the angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B downward is reduced, it will drive the inclined pipe A to move towards the middle, and the two side main pipes will gradually move closer to the middle. The sliding sleeve push-pull pipes will also push the sliding sleeve E on the main pipe to move upward, and finally achieve folding in the longitudinal direction; conversely, when the rigid hinge piece is pushed downward or the angle between the center lines of the rigid horizontal pipe A and the rigid horizontal pipe B downward is increased, it will drive the inclined pipe A to move towards the two sides, so that the two side main pipes are separated towards the two sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A, and the rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with the same axis or parallel axes. The sliding sleeve push-pull pipes also pull the sliding sleeves on the main pipes downward to slide to the supports or limiters and stop, and finally achieve full expansion and make the two side main pipes in a rigid connection state; the longitudinal folding device E includes: rigid horizontal pipe A (21), rigid horizontal pipe B (22), rigid hinge piece (23), hole A (23.1), hole C (29.1), inclined pipe B (30), hole D (30.1), The rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the sliding sleeves E placed on the two main pipes. After one end of each of the two inclined pipes B is hinged to the lower end of the main pipe or the main pipe foot plate or the support, the other end crosses upward and is hinged to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes B cross and are hinged to each other through the hole D in their middle parts; when the rigid hinge piece is lifted upward or the downward angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is reduced, the inclined pipes B will move towards the middle. At the same time, the rigid horizontal pipe A and the rigid horizontal pipe B drive the sliding sleeves E on the main pipes to move upward, driving the two side main pipes to gradually move closer to the middle, and finally realizing folding in the longitudinal direction; conversely, when the rigid hinge piece is pushed downward or the downward angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B is increased, it will drive the inclined pipes B to move towards both sides. The sliding sleeves E hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipes will move downward, so that the two side main pipes separate towards both sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A. The rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with coaxial or parallel axes. At the same time, the sliding sleeves E also slide downward to the limit piece to stop, and finally realizing full expansion, making the two side main pipes in a rigid connection state; The longitudinal folding device F includes: the rigid horizontal pipe A (21), the rigid horizontal pipe B (22), the rigid hinge piece (23), the hole A (23.1), the sliding sleeve push-pull pipe (28), the inclined pipe A (29), the hole C (29.1), further comprising: sliding sleeve C (16), sliding sleeve E (18) or sliding sleeve F (19). The rigid horizontal pipe B is hinged to the hole A of the rigid hinge piece fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the sliding sleeve C placed on the two main pipes. After one ends of the two inclined pipes A are respectively hinged to the lower end of the main pipe, or the main pipe foot plate, or the support, the other ends cross upward and are hinged to the hole C in the middle of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes A do not cross and hinge with each other pairwise in the middle, presenting an open, unconstrained and unhinged state. At the same time, one end of the two sliding sleeve push-pull pipes is hinged to the two inclined pipes A or the supports thereon, or respectively hinged to the rigid horizontal pipe A and the rigid horizontal pipe B or the supports thereon, and the other end is hinged to the sliding sleeve E or the sliding sleeve F installed on the main pipe. The sliding sleeve E or the sliding sleeve F is pushed and pulled to slide up and down along the main pipe. When the rigid hinge piece is lifted upward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B downward is reduced, it will drive the inclined pipe A to move towards the middle. The sliding sleeve C hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipe will eventually move upward, driving the two side main pipes to gradually approach the middle. At this time, the sliding sleeve push-pull pipe will also push the sliding sleeve E or the sliding sleeve F on the main pipe to move upward, and finally achieve folding in the longitudinal direction. On the contrary, when the rigid hinge piece is pushed downward or the included angle between the centerlines of the rigid horizontal pipe A and the rigid horizontal pipe B downward is increased, it will drive the inclined pipe A to move towards both sides. The sliding sleeve C hinged to the rigid horizontal pipe A and the rigid horizontal pipe B on the main pipe will move downward, so that the two side main pipes separate to both sides. Finally, the straight pipe part of the rigid horizontal pipe B falls into the groove of the rigid hinge piece fixed on the rigid horizontal pipe A. The rigid horizontal pipe A and the rigid horizontal pipe B are in a 180-degree horizontal state with coaxial or parallel axes. At the same time, the sliding sleeve push-pull pipe pulls the sliding sleeve E or the sliding sleeve F on the main pipe downward to also move downward and approach the sliding sleeve C, and finally achieve full expansion. The longitudinal folding device G includes: a rigid hinge piece (23), hole A (23...1), a rigid long tube (26), a rigid short tube (27), a sliding sleeve push-pull tube (28), and further includes a sliding sleeve e (18), a groove (12). The rigid hinge is either fixed on the rigid short tube or fixed on the rigid long tube. The rigid short tube and the rigid long tube are hinged through hole a on the rigid hinge. The two rigid long tubes are respectively hinged to the main pipe foot plate or support at the lower ends of the two side main pipes, or directly hinged to the lower part of the main pipe. Then, they are hinged to each other at the middle part. After the two rigid short tubes are hinged to the rigid long tubes through hole a on the rigid hinge, they are respectively hinged to the sliding sleeve e installed on the two main pipes. One end of the sliding sleeve push-pull tube is hinged to the rigid long tube or the support fixed thereon, and the other end is also hinged to the sliding sleeve e installed on the two main pipes. That is to say, both the sliding sleeve push-pull tube and the rigid short tube are hinged to the sliding sleeve e. The sliding sleeve push-pull tube and the rigid short tube jointly push and pull the sliding sleeve e to slide up and down along the main pipe. When the upward crossing angle between the two rigid long tubes is reduced, under the action of the cross-hinged structure, through hole a on the rigid hinge, it drives the rigid short tube to rotate and move upward around the hinge point of the sliding sleeve e on the main pipe. At the same time, under the action of the sliding sleeve push-pull tube hinged to the rigid long tube, the sliding sleeve e also moves upward, driving the two side main pipes to gradually move closer to the middle, and finally realizing folding in the longitudinal direction. In this process, when the sliding sleeve push-pull tube pushes the sliding sleeve e on the main pipe to slide upward, it also drives the rigid short tube hinged to the sliding sleeve e to move upward. On the contrary, when pushing downward and increasing the upward crossing angle between the two rigid long tubes, under the action of the cross-hinged structure, through hole a on the rigid hinge, it drives the rigid short tube to rotate and move downward around the hinge point of the sliding sleeve e on the main pipe. At the same time, under the action of the sliding sleeve push-pull tube hinged to the rigid long tube, the sliding sleeve e also moves downward, driving the two side main pipes to gradually expand to both sides, and finally realizing unfolding in the longitudinal direction. In this process: when the sliding sleeve push-pull tube pulls the sliding sleeve e on the main pipe to slide downward; it also drives the rigid short tube hinged to the sliding sleeve e to move downward, or the downward moving rigid short tube drives the sliding sleeve e to move downward; until the rigid short tube or the rigid long tube falls into the groove of the rigid hinge, making the axes of the rigid short tube and the rigid long tube concentric or parallel. At the same time, the downward sliding sliding sleeve e is also in a state of being limited by the limiting member, realizing complete unfolding.

[0081] The above are only the implementation schemes of the present invention. It should be noted here that for those of ordinary skill in the art, without departing from the inventive concept of the present invention, improvements can still be made, but these all fall within the protection scope of the present invention.

Claims

1. Portable hanging chair truss, comprising: Main pipe (1), auxiliary leg pipe (2), sliding sleeve A (3), auxiliary leg push-pull pipe (4), main pipe foot plate (5), support (6), auxiliary foot plate (7), hanging chair fabric (8), limiting member (11), groove (12), sliding sleeve B (15), sliding sleeve C (16), sliding sleeve D (17), longitudinal folding device A, longitudinal folding device B, longitudinal folding device C, longitudinal folding device D, longitudinal folding device E, longitudinal folding device F, longitudinal folding device G, and two-side transverse folding structures A, two-side transverse folding structures B, two-side transverse folding structures C, two-side transverse folding structures D, two-side transverse folding structures E, auxiliary leg pipe rigidification structure, a portable hanging chair truss for two or more people also includes a top expansion and contraction device, longitudinal top pipe (13), rigid locking pipe (14), sunshade fabric (9), connecting sleeve (10), characterized in that, on one side in the transverse direction of the two main pipes, that is, on one side in the depth direction of the portable hanging chair truss, the auxiliary leg pipe is hinged to the main pipe either at the top end of the main pipe, or in the middle, upper part or end of the main pipe, or is hinged to the sliding sleeve A placed on the main pipe, or the main pipe and the auxiliary leg pipe are not directly hinged, and its upper end is in an open state. After the two main pipes and the auxiliary leg pipes are unfolded, they each form a set of identical triangles with the ground to support the ground. The top end of the main pipe is inserted into the socket hole of the connecting sleeve (10); between the two side main pipes, either longitudinal folding device A, or longitudinal folding device B, or longitudinal folding device C, or longitudinal folding device D, or longitudinal folding device E, or longitudinal folding device F, or longitudinal folding device G is installed; between the main pipe and the auxiliary leg pipe that are hinged or not hinged at the upper part, either two-side transverse folding structure A, or two-side transverse folding structure B, or two-side transverse folding structure C, or two-side transverse folding structure D, or two-side transverse folding structure E is installed, wherein the longitudinal folding device B (1, 2, 3, 4, 5, 6, 11, 25) includes: main pipe (1), auxiliary leg pipe (2), sliding sleeve A (3), auxiliary leg push-pull pipe (4), main pipe foot plate (5), support (6), limiting member (11), straight cross pipe (25). The upper end of the auxiliary leg pipe is hinged above or at the upper end of the main pipe. One end of the auxiliary leg push-pull pipe is hinged to the sliding sleeve A on the main pipe, and the other end is either hinged to the support fixed on the auxiliary leg pipe or directly hinged to the auxiliary leg pipe. The two straight cross pipes are hinged to each other in the middle. The lower ends of the two straight cross pipes are either respectively hinged to the main pipe foot plates at the lower ends of the two side main pipes or directly hinged to the supports at the lower part of the main pipe. The upper ends of the two straight cross pipes are either respectively hinged to the sliding sleeve A hinged to the auxiliary leg push-pull pipe on the main pipe or directly hinged to the auxiliary leg push-pull pipe hinged to the sliding sleeve A. One end of the auxiliary leg push-pull pipe is hinged to the sliding sleeve A, and the other end is either hinged to the support fixed on the auxiliary leg or directly hinged to the auxiliary leg. The two straight cross pipes and the two auxiliary leg push-pull pipes jointly push and pull the sliding sleeve A to slide up and down along the main pipe;Between the lower parts of the auxiliary leg tubes on both sides, either install the auxiliary leg tube rigidifying device, or do not install it, or install the longitudinal folding devices A, B, C, D, E, F, G symmetrically and mirror-image; at the top of the portable hanging chair truss for two or more people, configure the top unfolding and folding device. Between the longitudinal top tube and the main tube or the auxiliary leg tube in the top unfolding and folding device, there is a rigid locking tube which is manually thread-connected in a triangle for rigid fixation.

2. The portable hanging chair truss according to claim 1, wherein: The longitudinal folding device A (12, 21, 22, 23, 23.1, 24, 24.1) includes: a rigid horizontal pipe A (21), a rigid horizontal pipe B (22), a rigid hinge (23), a hole A (23.1), an inclined cross pipe (24), a hole B (24.1), a groove (12). The rigid horizontal pipe B is hinged to the hole A of the rigid hinge fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the two side main pipes or to the supports fixed on the two side main pipes. After the two inclined cross pipes are hinged to each other, they are then hinged to the hole B in the middle parts of the rigid horizontal pipe A and the rigid horizontal pipe B. Finally, the two inclined cross pipes are either directly hinged to the sliding sleeve A installed on the main pipe or hinged to the upper end of the auxiliary leg pipe near the sliding sleeve A, and the auxiliary leg pipe is then hinged to the sliding sleeve A installed on the main pipe. The two inclined cross pipes push and pull the sliding sleeve A to slide up and down along the main pipe. The longitudinal folding device C (12, 23, 23.1, 26, 27, 28) includes: a rigid hinge (23), a hole A (23.1), a rigid long pipe (26), a rigid short pipe (27), a sliding sleeve push-pull pipe (28), a groove (12), a limiting member (11). The rigid hinge is fixed either on the rigid short pipe or on the rigid long pipe. The rigid short pipe and the rigid long pipe are hinged through the hole A on the rigid hinge. The two rigid long pipes are respectively hinged to the main pipe feet or supports at the lower ends of the two side main pipes or directly hinged to the lower part of the main pipe. Then, the two rigid long pipes are hinged to each other at their middle parts. After the two rigid short pipes are hinged to the rigid long pipes through the hole A of the rigid hinge, they are respectively hinged to the supports fixed on the two main pipes or directly hinged to the main pipe. One end of the sliding sleeve push-pull pipe is hinged to the sliding sleeve A installed on the main pipe, and the other end is hinged to either the rigid long pipe or the support fixed thereon or hinged to the rigid short pipe, pushing and pulling the sliding sleeve A to slide up and down along the main pipe. The longitudinal folding device D (12, 21, 22, 23, 23.1, 28, 29, 29.1) includes: a rigid horizontal pipe A (21), a rigid horizontal pipe B (22), a rigid hinge (23), a hole A (23.1), a sliding sleeve push-pull pipe (28), an inclined pipe A (29), a hole C (29.1), a groove (12). The rigid horizontal pipe B is hinged to the hole A of the rigid hinge fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively directly hinged to the two main pipes or hinged to the supports fixed on the main pipes. After one ends of the two inclined pipes A are respectively hinged to the lower end of the main pipe or the main pipe foot or the support, the other ends are then hinged upward to the hole C in the middle parts of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes A are not hinged to each other in their middle parts. One ends of the two sliding sleeve push-pull pipes are hinged to either the two inclined pipes A or the supports thereon or respectively directly hinged to the rigid horizontal pipe A and the rigid horizontal pipe B or hinged through the supports thereon, and the other ends are then hinged to the sliding sleeve A installed on the main pipe, pushing and pulling the sliding sleeve A to slide up and down along the main pipe. The longitudinal folding device E (12, 21, 22, 23, 23.(1, 29.1, 30, 30.1), including: rigid horizontal pipe A (21), rigid horizontal pipe B (22), rigid hinge (23), hole A (23.1), hole C (29.1), inclined pipe B (30), hole D (30.1). Rigid horizontal pipe B is hinged to hole A of the rigid hinge fixed on rigid horizontal pipe A. The other ends of rigid horizontal pipe A and rigid horizontal pipe B are respectively hinged to sliding sleeves A placed on two main pipes. One ends of two inclined pipes B are respectively hinged to the lower end of the main pipe or the main pipe foot plate or the support, and then the other ends cross upward and are hinged to hole C in the middle of rigid horizontal pipe A and rigid horizontal pipe B. The two inclined pipes B cross and hinge with each other in the middle through hole D. The longitudinal folding device F (3, 12, 15, 16, 21, 22, 23, 23.1, 28, 29.1, 30, 30.1), including: rigid horizontal pipe A (21), rigid horizontal pipe B (22), rigid hinge (23), hole A (23.1), sliding sleeve push-pull pipe (28), hole C (29.1), inclined pipe B (30), hole D (30.1), and also including: sliding sleeve A (3) or sliding sleeve B (15), sliding sleeve C (16). Rigid horizontal pipe B is hinged to hole A of the rigid hinge fixed on rigid horizontal pipe A. The other ends of rigid horizontal pipe A and rigid horizontal pipe B are respectively hinged to sliding sleeve C placed on two main pipes. One ends of two inclined pipes B are respectively hinged to the lower end of the main pipe or the main pipe foot plate or the support, and then the other ends cross upward and are hinged to hole C in the middle of rigid horizontal pipe A and rigid horizontal pipe B. And the two inclined pipes B cross and hinge with each other in the middle through hole D. At the same time, one ends of the two sliding sleeve push-pull pipes are either directly hinged to the two inclined pipes B or hinged to the support fixed on the two inclined pipes B or respectively directly hinged to rigid horizontal pipe A and rigid horizontal pipe B or the support thereon, and the other ends are hinged to sliding sleeve B or sliding sleeve A installed on the main pipe, and push and pull sliding sleeve B or sliding sleeve A to slide up and down along the main pipe. The longitudinal folding device G (3, 12, 23, 23.1, 26, 27, 28), including: rigid hinge (23), hole A (23.1), rigid long pipe (26), rigid short pipe (27), sliding sleeve push-pull pipe (28), and also including sliding sleeve A (3), groove (12). The rigid hinge is fixed on the rigid short pipe or the rigid long pipe. The rigid short pipe and the rigid long pipe are hinged through hole A on the rigid hinge. The two rigid long pipes are respectively hinged to the main pipe foot plate or the support at the lower end of the two side main pipes or directly hinged to the lower part of the main pipe, and then are hinged to each other in the middle part. After the two rigid short pipes are hinged to hole A of the rigid hinge with the rigid long pipe, they are respectively hinged to sliding sleeve A installed on the two main pipes, driving sliding sleeve A to slide up and down along the main pipe. One end of the sliding sleeve push-pull pipe is hinged to the rigid long pipe or the support fixed thereon, and the other end is also hinged to sliding sleeve A installed on the two main pipes. The sliding sleeve push-pull pipe and the rigid short pipe jointly push and pull sliding sleeve A to slide up and down along the main pipe.

3. The portable hanging chair truss according to claim 1, wherein: The described two-side horizontal folding structure A (1, 2, 3, 4) includes: a main pipe (1), an auxiliary leg pipe (2), a sliding sleeve A (3), an auxiliary leg push-pull pipe (4). The auxiliary leg pipe is hinged to the sliding sleeve A placed on the main pipe. One end of the auxiliary leg push-pull pipe is either directly hinged to the main pipe or hinged to the main pipe foot plate or support fixed on the main pipe. The other end of the auxiliary leg push-pull pipe is either directly hinged to the auxiliary leg pipe or hinged to the support fixed on the auxiliary leg pipe. A limiting member for the downward movement of the sliding sleeve A is installed at the lower part of the main pipe; the described two-side horizontal folding structure B (1, 2, 3, 4), including: a main tube (1), an auxiliary leg tube (2), a sliding sleeve A (3), an auxiliary leg push-pull tube (4). The auxiliary leg tube is directly hinged to the main tube at the upper end or upper part, or is hinged through a support fixed to the upper part of the main tube. One end of the auxiliary leg push-pull tube is hinged to the sliding sleeve A on the main tube, and the other end of the auxiliary leg push-pull tube is either directly hinged to the auxiliary leg tube or hinged to a support fixed to the auxiliary leg tube. A limiting member for the downward movement of the sliding sleeve A is provided at the lower part of the main tube; the two-side horizontal folding structure C (1, 2, 3, 4, 4.1), including: a main tube (1), an auxiliary leg tube (2), a sliding sleeve A (3), an auxiliary leg push-pull tube (4), a hole E (4.1). The auxiliary leg tube and the main tube are not hinged at their upper parts, and the two are inclined to each other in a triangular non-hinged open state. The auxiliary leg push-pull tubes are arranged in a crossed manner and are hinged with each other by the hole E at the upper part of their middle parts. The upper ends of the auxiliary leg push-pull tubes are respectively hinged to the sliding sleeves A arranged on the main tube and the auxiliary leg tube, and the lower ends of the two auxiliary leg push-pull tubes are respectively hinged to the foot plates or supports fixed to the lower ends of the main tube and the auxiliary leg tube. Limiting members for the downward movement of the sliding sleeve A are provided at the lower parts of the main tube and the auxiliary leg tube; the two-side horizontal folding structure D (1, 2, 3, 4), including: a main tube (1), an auxiliary leg tube (2), a sliding sleeve A (3), an auxiliary leg push-pull tube (4). The auxiliary leg tube is directly hinged to the main tube at the upper end or upper part, or is hinged through a support fixed to the upper part of the main tube. The two auxiliary leg push-pull tubes are arranged in a crossed form but do not cross-hinge with each other. At this time, the auxiliary leg push-pull tubes are only processed with hinge holes at their two ends. The upper ends of the two auxiliary leg push-pull tubes are respectively hinged to the sliding sleeves A on the main tube and the auxiliary leg tube, and the other ends of the two auxiliary leg push-pull tubes are respectively at the lower ends of the main tube and the auxiliary leg tube, either hinged to the main tube foot plate and the auxiliary foot plate fixed to the main tube and the auxiliary leg tube or hinged to the supports fixed to the main tube and the auxiliary leg tube. Limiting members for restricting the downward movement of the sliding sleeve A are provided at the lower parts of the main tube and the auxiliary leg tube; the two-side horizontal folding structure E (1, 2, 3, 4, 4.1, 15, 17), including: a main tube (1), an auxiliary leg tube (2), a sliding sleeve A (3) or a sliding sleeve B (15), an auxiliary leg push-pull tube (4), a hole E (4.1), a sliding sleeve D (17). The auxiliary leg tube is directly hinged to the main tube at the upper end or upper part, or is hinged through a support fixed to the upper part of the main tube. The auxiliary leg push-pull tubes are arranged in a crossed state and are hinged with each other in pairs by the hole E at the upper part of their middle parts. The upper ends of the two auxiliary leg push-pull tubes are respectively hinged to the sliding sleeve B or the sliding sleeve A arranged above the main tube and the auxiliary leg tube, and the lower ends of the two auxiliary leg push-pull tubes are respectively hinged to the sliding sleeve D arranged below the main tube and the auxiliary leg tube. Limiting members for restricting the downward movement of the sliding sleeve B or the sliding sleeve A or the sliding sleeve D are provided at the middle and lower parts of the main tube or the auxiliary leg tube.

4. The portable hanging chair truss according to claim 1, characterized in that, The longitudinal folding device A can be matched with the lateral folding structures A on both sides, or the lateral folding structures B on both sides, or the lateral folding structures C on both sides, or the lateral folding structures D on both sides, or the lateral folding structures E on both sides; the longitudinal folding device B can be matched with the lateral folding structures B on both sides, or the lateral folding structures C on both sides, or the lateral folding structures D on both sides, or the lateral folding structures E on both sides; the longitudinal folding device C can be matched with the lateral folding structures A on both sides, or the lateral folding structures B on both sides, or the lateral folding structures C on both sides, or the lateral folding structures D on both sides, or the lateral folding structures E on both sides; the longitudinal folding device D can be matched with the lateral folding structures A on both sides, or the lateral folding structures B on both sides, or the lateral folding structures C on both sides, or the lateral folding structures D on both sides, or the lateral folding structures E on both sides; the longitudinal folding device E can be matched with the lateral folding structures A on both sides, or the lateral folding structures B on both sides, or the lateral folding structures C on both sides, or the lateral folding structures D on both sides, or the lateral folding structures E on both sides; the longitudinal folding device F can be matched with the lateral folding structures A on both sides, or the lateral folding structures B on both sides, or the lateral folding structures C on both sides, or the lateral folding structures D on both sides, or the lateral folding structures E on both sides; the longitudinal folding device G can be matched with the lateral folding structures A on both sides, or the lateral folding structures B on both sides, or the lateral folding structures C on both sides, or the lateral folding structures D on both sides, or the lateral folding structures E on both sides.

5. The portable hanging chair truss according to claim 1, wherein: The auxiliary leg tube rigidifying device (12, 61, 62, 63, 63.1) includes: auxiliary rigid tube A (61), auxiliary rigid tube B (62), auxiliary rigid hinge (63), hole F (63.1), groove (12). One end of the auxiliary rigid tube B is hinged to the hole F on the auxiliary rigid hinge fixed at one end of the auxiliary rigid tube A. The other ends of the auxiliary rigid tube A and the auxiliary rigid tube B are respectively hinged to the auxiliary foot plate or support at the lower end of the auxiliary leg tube, or directly hinged.

6. The portable hanging chair truss according to claim 1, characterized in that: The described top expansion and contraction device (10, 13, 14, 40, 41, 42, 43, 44, 45, 46, 47, 48) includes: a coupling sleeve (10), a longitudinal push tube (13), a rigid locking tube (14), a double sling (40), a sliding support (41), a single sling (42), a support rod (43), a push-pull rod (44), a tensioning rope (45), a ribbon (46), a rope and ribbon connector (47), and a support member (48). The coupling sleeve is fixed on both sides of the longitudinal push tube. A double sling is arranged in the middle of the longitudinal push tube, and single slings are arranged on both sides of the longitudinal push tube. Support members are fixed at both ends of the longitudinal push tube or outside the coupling sleeve. Support rods are symmetrically hinged to the upper edges of the support members. A sliding support is installed on the longitudinal push tube inside the single slings arranged on both sides of the longitudinal push tube. One end of the symmetrically arranged push-pull tubes is hinged to the sliding support, and the other end is hinged to the support rods. Rope and ribbon connectors are installed at the four corners of the top expansion and contraction device. An elastic tensioning rope is arranged horizontally, and a non-elastic ribbon or rope is arranged longitudinally. The four corners of the sunshade fabric are connected to the rope and ribbon connectors, and the periphery of the sunshade fabric is sewn to the ribbon, rope, and tensioning rope.

7. The portable hanging chair truss according to claim 1, characterized in that: The described coupling sleeve (10) is connected to the main pipe and the connection between the main pipe and the top of the auxiliary leg pipe in an open state, either in a single-hole insertion form or a double-hole insertion form.

8. Portable hanging chair truss, comprising: Main pipe (1), auxiliary leg pipe (2), sliding sleeve e (18), auxiliary leg push-pull tube (4), main pipe foot plate (5), support (6), auxiliary foot plate (7), hanging chair fabric (8), coupling sleeve (10), limiting member (11), groove (12), longitudinal folding device A, longitudinal folding device C, longitudinal folding device D, longitudinal folding device E, longitudinal folding device F, longitudinal folding device G. It further includes sliding sleeve c (16) and sliding sleeve f (19). It is characterized in that the two main pipes are arranged vertically or longitudinally outwardly inclined on both sides in the longitudinal direction of the portable hanging chair truss. Auxiliary leg pipes and auxiliary leg push-pull tubes are symmetrically arranged in the transverse direction on both sides of the main pipes. The upper ends of the two auxiliary leg pipes are hinged to the sliding sleeve e or sliding sleeve f assembled on the main pipe and are arranged horizontally. The auxiliary leg push-pull tube is hinged to the main pipe foot plate or support fixed at the lower end of the main pipe. The other end of the auxiliary leg push-pull tube is hinged to the auxiliary foot plate at the lower end of the auxiliary leg pipe or the support hinged to the lower part of the auxiliary leg pipe, or is directly hinged to the lower part of the auxiliary leg pipe. Between the two main pipes, either longitudinal folding device A, longitudinal folding device C, longitudinal folding device D, longitudinal folding device E, longitudinal folding device F, or longitudinal folding device G is installed. The coupling sleeve (10) is sleeved on the top of the main pipe.

9. The portable hanging chair truss according to claim 8, wherein: The longitudinal folding device A (12, 21, 22, 23, 23.1, 24, 24.1) includes: a rigid horizontal pipe A (21), a rigid horizontal pipe B (22), a rigid hinge (23), a hole A (23.1), an inclined cross pipe (24), a hole B (24.1), a groove (12). The rigid horizontal pipe B is hinged to the hole A of the rigid hinge on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively hinged to the main pipes on both sides or to the supports fixed on the main pipes. After the two inclined cross pipes are hinged to each other, they are then hinged to the hole B in the middle parts of the rigid horizontal pipe A and the rigid horizontal pipe B. Finally, the two inclined cross pipes are hinged to the sliding sleeve E installed on the main pipe, and the two inclined cross pipes push and pull the sliding sleeve E to slide up and down along the main pipe. The longitudinal folding device C (12, 23, 23.1, 26, 27, 28) includes: a rigid hinge (23), a hole A (23.1), a rigid long pipe (26), a rigid short pipe (27), a sliding sleeve push-pull pipe (28), a groove (12), a limiting member (11). The rigid hinge is fixed either on the rigid short pipe or on the rigid long pipe. The rigid short pipe and the rigid long pipe are hinged through the hole A on the rigid hinge. The two rigid long pipes are respectively hinged to the main pipe feet or supports at the lower ends of the two side main pipes, or directly hinged to the lower part of the main pipe. Then, the two rigid long pipes are hinged to each other at their middle parts. After the two rigid short pipes are hinged to the rigid long pipes through the hole A of the rigid hinge, they are respectively hinged to the supports fixed on the two main pipes or directly hinged to the main pipes. One end of the sliding sleeve push-pull pipe is hinged to the sliding sleeve E installed on the main pipe, and the other end is hinged to either the rigid long pipe or the support fixed thereon, or hinged to the rigid short pipe, pushing and pulling the sliding sleeve E to slide up and down along the main pipe. The longitudinal folding device D (12, 21, 22, 23, 23.1, 28, 29, 29.1) includes: a rigid horizontal pipe A (21), a rigid horizontal pipe B (22), a rigid hinge (23), a hole A (23.1), a sliding sleeve push-pull pipe (28), an inclined pipe A (29), a hole C (29.1), a groove (12). The rigid horizontal pipe B is hinged to the hole A of the rigid hinge fixed on the rigid horizontal pipe A. The other ends of the rigid horizontal pipe A and the rigid horizontal pipe B are respectively directly hinged to the two main pipes or hinged to the supports fixed on the main pipes. After one ends of the two inclined pipes A are respectively hinged to the lower ends of the two side main pipes or the main pipe feet or supports, the other ends are then hinged upward to the hole C in the middle parts of the rigid horizontal pipe A and the rigid horizontal pipe B. The two inclined pipes A are not hinged to each other in their middle parts. One ends of the two sliding sleeve push-pull pipes are directly hinged to the two inclined pipes A, or hinged to the supports on the two inclined pipes A, or respectively directly hinged to the rigid horizontal pipe A and the rigid horizontal pipe B or hinged to the supports fixed thereon. The other ends of the two sliding sleeve push-pull pipes are then hinged to the sliding sleeve E installed on the main pipe, pushing and pulling the sliding sleeve E to slide up and down along the main pipe. The longitudinal folding device E (12, 21, 22, 23, 23.1, 29.1, 30, 30.1), including: rigid horizontal pipe A (21), rigid horizontal pipe B (22), rigid hinge (23), hole A (23.1), hole C (29.1), inclined pipe B (30), hole D (30.1). Rigid horizontal pipe B is hinged to hole A of the rigid hinge fixed on rigid horizontal pipe A. The other ends of rigid horizontal pipe A and rigid horizontal pipe B are respectively hinged to sliding sleeves E placed on two main pipes. One ends of two inclined pipes B are respectively hinged to the lower end of the main pipe, or the foot plate of the main pipe, or the support, and then the other ends cross upward and are hinged to hole C in the middle of rigid horizontal pipe A and rigid horizontal pipe B. The two inclined pipes B cross and hinge with each other pairwise in the middle through hole D. The longitudinal folding device F (12, 16, 18, 19, 21, 22, 23, 23.1, 28, 29, 29.1) includes: rigid horizontal pipe A (21), rigid horizontal pipe B (22), rigid hinge (23), hole A (23.1), sliding sleeve push-pull pipe (28), inclined pipe A (29), hole C (29.1), and also includes: sliding sleeve C (16), sliding sleeve E (18) or sliding sleeve F (19). Rigid horizontal pipe B is hinged to hole A of the rigid hinge fixed on rigid horizontal pipe A. The other ends of rigid horizontal pipe A and rigid horizontal pipe B are respectively hinged to sliding sleeve C placed on two main pipes. One ends of two inclined pipes A are respectively hinged to the lower end of the main pipe, or the foot plate of the main pipe, or the support, and then the other ends cross upward and are hinged to hole C in the middle of rigid horizontal pipe A and rigid horizontal pipe B. The two inclined pipes A do not cross and hinge with each other pairwise in the middle, being in an unconstrained and unhinged state. At the same time, one end of the two sliding sleeve push-pull pipes is hinged to the two inclined pipes A or the supports thereon, or respectively to rigid horizontal pipe A and rigid horizontal pipe B or the supports thereon, and the other end is hinged to sliding sleeve E or sliding sleeve F installed on the main pipe, pushing and pulling sliding sleeve E or sliding sleeve F to slide up and down along the main pipe. The longitudinal folding device G (12, 18, 23, 23.1, 26, 27, 28) includes: rigid hinge (23), hole A (23.1), rigid long pipe (26), rigid short pipe (27), sliding sleeve push-pull pipe (28), and also includes sliding sleeve E (18), groove (12). The rigid hinge is fixed on the rigid short pipe or the rigid long pipe. The rigid short pipe and the rigid long pipe are hinged through hole A on the rigid hinge. The two rigid long pipes are respectively hinged to the foot plate of the main pipe at the lower end of the two side main pipes or the support, or directly hinged to the lower part of the main pipe, and then are hinged pairwise in the middle part. After the two rigid short pipes are hinged to hole A of the rigid hinge with the rigid long pipe, they are respectively hinged to sliding sleeve E installed on the two main pipes. One end of the sliding sleeve push-pull pipe is hinged to the rigid long pipe or the support fixed thereon, and the other end is also hinged to sliding sleeve E installed on the two main pipes. The sliding sleeve push-pull pipe and the rigid short pipe jointly push and pull sliding sleeve E to slide up and down along the main pipe.

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