JP2022188929A - Indoor/outdoor self-supporting hammock or self-supporting tent-mounted hammock - Google Patents

Abstract

To provide an indoor/outdoor self-supporting hammock, etc., in which an outdoor/indoor hammock and an aerial tent enjoy high popularity even in a house or in a camp, and a different dimension mood of levitation is desired to be felt easily, and further it can be rotated or tilted for use in reading.SOLUTION: Two supporting legs are provided with an arched rectangular cross section and are resilient, and also are comfortable in micro-vibration of an entire structure. It is self-supporting for both use in indoor/outdoor to be safe and secure in which fixation is not required in a house pillar or beam and in an outdoor tree trunk. It is provided with a groove in a lower side of the rectangular cross section of the arched supporting leg, and two extended ropes are stretched with one wheel closed in a circle in a supporting leg lower surface, so that the large tension being concentrated on an apex can be dispersed, and it can be equalized and supported by itself. The length adjustment is also simple with a pulley. It is easy to stack and store. It is easy to get around by car, and it is possible to easily enjoy the flow of time that transcends everyday life, a floating space of another dimension, and forest bathing leisure without getting tired of it.SELECTED DRAWING: Figure 1

Description

The present invention is a self-anchored hammock or a self-anchored hammock that allows you to float and relax in any situation, indoors or outdoors, without the need to stretch ropes on tree trunks, house pillars, and beams, and by coping with large rope tension. related to the aerial tent.

Hammocks mainly have an image of leisure in the forest that connects trees, but in recent years with a lot of stress, there is a need to enjoy floating in the air and relax. If possible, instead of hanging it from the beams and pillars of the house with a rope inside the house, it can be used on tatami mats, floors, corridors, balconies, in gardens, and even outdoors at campsites. It does not need to be attached to trees. However, it is required that the supporting part does not damage the tatami mats. A stacking type that can be stored, transported, and moved is desirable. A search on the patent information platform using the keywords "hammock" and "simple" yielded 27 results. Two of them (Patent Literature 1) and (Patent Literature 2) are applicable, but are different from the present application because they are vertically two-tiered vertical pipe leg supports and do not provide a relaxing feeling in a hospital atmosphere. Searching for "hammock" and "indoor" yielded 0 results, searching for "hammock" and "indoor" yielded 21 results. I searched for "hammock" and "on the floor" and found 4 cases, but 1 case of (Patent Document 4) does not shake on the floor and is not fun, and the strength is increased by extension and extension. It differs in the pipe type, which is not necessarily strong. A search for "hammock" and "garden" yielded 13 results, and one corresponding to (Patent Document 5).

Jitsuzen Showa 52-017102 Jitsuzen Showa 52-017103 Patent application publication 56-85307 JP 2007-044211 JP 2012-29960

There are various ways to enjoy it with one support leg, as shown in Fig. 1 (A) A cradle hammock that allows you to return to your childhood, (B) A slanted hammock for reading as a hobby, (C) Doraemon's outdoor aerial tent. Depending on the situation, you can freely enjoy a time slip that transcends everyday life, the flow of exquisite time, and a different dimension space. A chopping board and stacks of newspapers and magazines are sufficient for support.
Indoors and outdoors, you can relax when you don't have to tie ropes to tree trunks, house columns, and beams. Hammocks mainly have an image of leisure in the forest connecting trees, but in today's stressful world, there is a need for a sense of openness and a close-up experience of floating in the air. If possible, instead of hanging it from the beams and pillars of the house with a rope, it should be a self-supporting type that can be fixed only by supporting legs on tatami mats, floors, corridors, balconies, gardens, and even outdoors at campsites. , other structures such as pillars, and can stand on its own without requiring anchorage to trees. However, it is required that the supporting part does not damage the tatami mats. If the two supporting legs are superimposed, it becomes easier to carry in and store, and to transport and move to the campsite by car.
In general, hammocks pull both ends of the rope, so they need to be supported and fixed at some point, but with a pipe support leg that concentrates at one point, there are nodes that connect the pipes, so the structural strength is not necessarily strong. , Unexpected load bias or shaking can cause bending or breakage, so you can't relax. Dynamically, a large tensile force acts on the ropes at both ends. As the bending is reduced and the tension is increased, that is, in an aerial tent in which the rope is stretched substantially horizontally, a large tensile force is applied. Many of the support legs of hammocks are made of hollow pipes, but they have poor load-bearing capacity, many nodes, and poor flow of force, and the load limit is seen. For this reason, if the hollow pipe support member is excessively stretched, it will easily break in a large bend. It is obvious that there is a danger of falling from the head if it breaks. FIG. 2 shows the components of the tensile force applied to both ends of the rope by the weight P of the hammock and aerial tent. For example, if the span L is 2 m and the deflection S is halved from 1 m to 0.5 m, the tension T is increased by about 1.5 times. Furthermore, if the deflection S is reduced from 0.5m to half of 0.25m, the tension T becomes about 1.8 times. That is, it can be seen that the tighter the aerial tent is stretched and the more horizontal it is stretched, the greater the tension required. On the contrary, it can be said that a hammock with slack does not need much tension.
Ordinary hollow pipe materials have a small cross-sectional height and a small resistive bending moment, which makes them uneasy. The supporting legs must have strong tenacity against breakage and flexibility, and must be safe and secure. It is effective for the supporting leg to have an arcuate streamline shape that is elastic and facilitates smooth transmission of force. The overall shape of the support legs is flexible and repulsive like a spring. It's just like a real bow, and the slight vibrations transmitted from the entire support leg are pleasant. Approximately concentric circles with smooth and effective cross-sectional heights, such as those of a Venetian boat or canoe, or approximately crescent-shaped streamlines with effective cross-sectional heights that change in response to changes in moment. This increases the resistive bending moment across the support leg. In addition, safety can be enhanced by standardizing a box shape with a rectangular cross section in order to increase resistance to torsional deformation. A roughly crescent shaped figure tends to effectively vary the cross-sectional height. FIG. 3 shows an example of a combination of two upper and lower curves that form the arcuate figure of the support leg. (A) 2 concentric circles, (B) 2 circles with the same radius but center shifted, (C) 2 circles with a small upper circle and a large lower circle, (D) 2 large upper circles and a smaller lower circle A circle, (E) a circle at the top and a parabola at the bottom, (F) a parabola at the top and a circle at the bottom, and (G) a parabola at the top and bottom. A roughly crescent-shaped streamline figure is obtained. Concentric circles have a uniform cross-sectional height, while crescents have a maximum height in the vicinity of the center of the support leg span and decrease toward the apex. A smooth arc can be obtained with the two upper and lower lines of the cross-section with its uniform or varying height. However, these figures are adjusted so that the vicinity of the vertices of both ends of the supporting legs where the tension is partially concentrated is not extremely thin. FIG. 4 shows a perspective view of the support leg. The arcuate support leg naturally requires a cross-sectional shape and effective height that can resist external force. If the supporting leg member has a rectangular cross section 9 with a large resistive bending moment, there is a sense of security. The distance between the upper and lower curves of the supporting leg member, that is, the distance in the direction perpendicular to the center line of the two curves is the cross-sectional height h. The rail-type, I-shaped cross section 10 is not much inferior to the rectangular cross section 9 in resisting bending moment, and is efficient and economical, but it is necessary to consider torsional deformation. In this way, the supporting leg is formed into an elastic arch shape, the supporting leg is integrated without providing any bending points or nodes that are structurally weak points, and the supporting leg member has a rectangular cross section 9 with a large resistive bending moment. The problem of the self-fixing type can be solved if the force concentration can be alleviated by the elasticity and flexibility corresponding to the deformation of the shape and the load can be supported. If the rectangular cross-sectional box is not hollow and is filled, if partition walls 25 are provided at regular intervals, or if the outer shell is made of a thick plate, the rigidity is increased and the torsional deformation is further strengthened. From the manufacturing point of view, the rail type and the I type are simpler. If a thicker steel plate that can resist torsional deformation is used, or if ribs that serve as partition walls 25 are placed everywhere on the left and right sides of the web of the central axis, the torsional strength can be improved. No problem.
Next, if the force concentrated on the apex is directed to the lower part of the support leg, the force will be dispersed further, and the economy of the cross-sectional reduction and the safety of the structure as a whole will be improved. As shown in FIG. 5, by utilizing the length of the arcuate curved surface, the rope 3 can be extended and closed with a single turn over the entire length of the lower surface of the support leg. The script body side can firmly take charge of the dispersing force as a reaction force. Distributing forces and reaction forces are equally balanced. A groove is provided along the curved surface in the lower section of the support leg member, a rope is stretched inside, the tension force applied to the rope is directed toward the inner wall of the groove, and the force is smoothly distributed over the entire arcuate support leg member. The method can solve the self-fixing problem. That is, the two extension ropes of the two support legs of a hammock or aerial tent are each made into one loop, and the rope is hung over the entire support leg. and the supporting legs, the overall adhesion, friction, and fixation work to disperse the force. When the rope is turned on the bottom surface of the rectangular cross section shown in FIG. 5, (A) the groove 12 for inserting the rope into the bottom flange 11B of the rectangular cross section can be manufactured along the curved surface from the beginning. In the rail type and I type, (B) a groove 12 may be added to the lower flange, or (C) the rope 3 may be hooked in the space below the upper flange 11A. (D) If a partition wall 25 is provided, it can also be passed through the hole 26 of the scallop.
The rope is one wheel, but it is easy to adjust the length. When the hammock is first set, the rope between the two vertices hangs down and is slack. If you wrap a rope around a log, you can make it as short as the circumference in one roll. It's easy to find the right amount of tension and sway to your liking. If the tension is increased, an aerial tent becomes possible.
Furthermore, as another method of fixing the rope to the supporting leg, as shown in FIG. It is possible to solve the problem of dispersing or distributing the force concentrated on the vertex. Alternatively, as a further method, as shown in FIG. 7, the extension rope is wound around the diagonal member of each support leg from the top and fixed in the vicinity of the horizontal horizontal member in the middle. Frictional resistance with the legs works effectively throughout the extension, and there is also a secondary effect of increasing strength by tightening the diagonal members of the supporting legs. can be resolved.
In order for any of these support legs to overturn in the lateral direction, it is necessary to hold on with the two support legs shown in the front views of FIGS. 6 and 7 . Horizontal cross members are required everywhere between the two supporting legs.
Since the vicinity of the bottom where the support leg is supported by the base is naturally curved, as shown in FIG. Either attach a horizontal straight attachment that can be attached to the curved surface, or (C) set up a pedestal and fix anchors on both sides away from the lowest point in the center, or simply use newspapers or magazines to support the balance. . For those who want to enjoy the feeling of floating in the air like a cradle, the curved surface is left as is, but even in this case, it is desirable to provide a pedestal on the tatami mat to prevent abrasion with the supporting surface. Also, the tips of the rectangular support portions of the support legs need to be devised. (A) Finish the tip of the support leg horizontally, (B) Finish the tip of the support leg with a smooth rounded surface, (C) Keep the cross-sectional shape of the support leg as it is, and add filler to the tip. (D) Leave the cross-sectional shape of the support leg as it is, and create a sloping recess in the thick pedestal. There is a method of providing a straight pedestal or a jig pedestal.
There are also other ways to enjoy it. For people who want to enjoy reading in a hammock, you can keep your head high by rotating the support legs to raise the top of one side and lower the top of the other. Since the hammock for reading is in a rotated state, the lowest point of the arc is naturally located on the top side, which is lower than the central portion. This can be done by using a separate figure with the lowest point in the center shifted, or by increasing the length of the pedestal placed under the lowest point (A) shown in FIG. You can either tie an anchor or wire between it and the pedestal to prevent it from floating up, or (B) make the base horizontal and prepare a detachable attachment or jig that matches the curved surface of the support leg to prevent rotation. ) Laying a support plate like a chopping board in the center and stacking newspapers and magazines firmly on the overturned side is a simple and clear method.
With these, a safe and secure self-anchored hammock or aerial tent that can be used both indoors and outdoors can be realized. It can be used for multiple purposes such as outdoor and indoor use, so-called amphibious use, and it is easy to use and enjoy. It is desirable that the ropes of the hammock and the aerial tent can be used together.

In order to solve such problems, in the self-anchored hammock or self-anchored aerial tent for both indoor and outdoor use of the present invention, the two support legs are supported at the center of the span, and no joint nodes are provided in the middle of the span. An arcuate shape having apexes at both ends, the supporting leg member has a substantially rectangular cross section, a substantially rail-shaped, or an I-shaped cross section, and the supporting leg member has a uniform cross-sectional height throughout the supporting leg. Alternatively, the support leg is streamlined in a substantially concentric circle or a crescent shape in side view by forming a variable cross section in which the height of the cross section is gradually changed so as to be maximum near the bottom of the center of the span. characterized by

Further, in the self-anchoring hammock or self-anchoring aerial tent for both indoor and outdoor use of the present invention, the cross-sectional upper and lower edges of the support leg members are formed by two concentric circles, two circles with the same radius but with the center shifted, and large and small. It consists of two circles with different radii, a circle and a parabola, or a combination of two upper and lower curves.

In addition, the self-anchored hammock or self-anchored aerial tent for indoor and outdoor use of the present invention is
The two ropes of the hammock or aerial tent are respectively extended from the apex and closed in one turn along the grooves provided in the lower section of the two supporting leg members or the hooks in the upper section of the support leg members. It is characterized by being stretched with one wheel.

In addition, the self-anchored hammock or self-anchored aerial tent for indoor and outdoor use of the present invention is
Two ropes of the hammock or aerial tent each extend from said apex and encircle between the two support legs a horizontal cross member or projection disposed between the diagonal members of said two support legs. It is characterized by being one closed wheel.

In addition, the self-anchored hammock or self-anchored aerial tent for indoor and outdoor use of the present invention includes two ropes of the hammock or aerial tent respectively extending from the apexes, and each of the two supporting legs extending diagonally. It is characterized in that it is wrapped around the members and anchored in the vicinity of the horizontal cross members or projections arranged on the diagonal members of the two support legs, respectively.

Depending on the mood, it can be used as a hammock for a cradle, an aerial tent for a secret base, or even rotated to raise the top of one side for reading as a hobby. You will not get tired of outdoor and indoor leisure, and it will be the best fun. In particular, I am excited and have high expectations for the pleasure of reading. If you swing like a cradle, you will slip back in time to your childhood and go back to your innocence. In the aerial tent, you can shut out from the noisy world. In order to relieve the stress of everyday life, you have to have fun. it has to be funny I have to keep myself from getting bored. Not getting in the way of storage is also an important requirement in narrow Japanese houses. Since the two supporting legs can be piled up by removing the horizontal cross member, it can be leaned against the wall and does not get in the way. Easy to transport and move. The elastic bow-shaped rocking also invites fine vibrations of the whole and is comfortable. I fall asleep right away in a dreamy mood. If you think of this dreamy feeling when you go to bed, you can expect a secondary effect that will lead to sleep induction and restful sleep. The self-fixing arcuate shape is beautiful and beautiful, and is a secret pride. If you paint it in your own color, it will become one in the world. Mounting it on the ceiling frame of the car, it is fun to hum even on long distance drives. Even if you don't brag, be careful not to brag too much. Of course, you can enjoy a different dimension space with the original floating in the air.
A special time that transcends everyday life flows with the feeling of being in a different dimension, floating in the air, and comfortable shaking. What a luxury even though it's the same time. You can enjoy a higher-grade fun and a special leisure feeling. Forget the hustle and bustle and become nothing. Bathing in the sunshine filtering through the trees in a forest bath will refresh your body and mind, and the chirping of birds will become an orchestra. It's a little bit back to everyday life, but even on the veranda of the apartment, the breeze makes me feel like an open-air bath.
Conventional hammocks, especially aerial tents, have a high tension, so it is necessary to fix the ropes to the pillars, beams, and tree trunks of the house, and it is not easy to enjoy. Therefore, by devising a safe and secure self-anchoring type that does not depend on anything else, we have realized a hammock or aerial tent that can be used both indoors and outdoors. If it is simply fixed at the apex of the supporting leg, a large force will be concentrated on the apex. led to the reduction and dispersion of In addition, (A) uniform cross-sectional heights of the support legs in FIG. 3 facilitate manufacturing, and (B) a crescent shape in which the center is moved with the same radius reduces the manufacturing loss of materials. Or (C) ~ (G) By changing the cross section as it is, the force is transmitted without waste and it becomes safe. It can form arcuate curves and provide beautiful concentric circles and crescents. It can be said that beauty is more satisfying in these closed days. If you rotate it and raise one side of the top part, the head position in the hammock will be higher, and it can also be used for reading. It can be said that this is also an important element and direction for not getting bored. Since the lowest point can be moved simply by tilting the circles and parabolas that make up the supporting leg figure, it can be stabilized and easily adjusted using a pedestal. When the support legs are not in use, the horizontal members of the support legs can be pulled out so that the two support legs can be stacked for convenient storage, portability, and installation. Since it is a self-fixing type, it does not require large tree trunks, house pillars, or beams that take reaction force at the installation site, and has the greatest advantage of being suitable for both indoor and outdoor use. It has succeeded in taking a large pulling force by itself. In addition, we have succeeded in distributing the tension evenly without providing a fixed portion on the whole support leg, and distributing the force toward the inside of the support leg as a whole. If the total length of the support leg is 2m to 3m, it is not necessary to use a disassembly type or an assembly type. The ceiling height is lower than the height of the living room, so it can be brought in as it is at the time of purchase and can be enjoyed indoors. By stacking two supporting legs in a bundle, it is far safer than the folding type that halves at the center, and solves the problem of storage space. It is easy to transport on the ceiling mount of a car, and it is easy to move to camp. In an apartment, you can have more secret pleasures on the veranda, like an open-air bath. If the bottom of the support leg is a horizontal straight line, it will be stable, but even if it is a curved surface as it is, it will be fun to rock. If a separate board and floor mat are laid on the tatami mat, etc., there is an effect of not only stabilizing the tatami mat but also damaging the bottom of the support leg, the tatami mat, and the ground. As for the board, it is sufficient to purchase a resin cutting board separately. Newspapers, magazines, etc. are also cushioned, and I am simply happy that they are useful without being bulky such as anchors.
The shape of the support leg is a hammock at the center of the vertex of the triangular leg type when viewed from the front, a trapezoidal leg type with widened vertex, and a hammock or aerial tent with the rectangular leg type with parallel bars. It can be adjusted, so you can enjoy your daily life in various ways, depending on your mood. If you have 7 long horizontal members, 2 medium long members, 2 medium length members for both (A) and (B), and 2 short members, you can easily convert and assemble them. Also, there are various ways to enjoy it depending on how the rope is stretched, tensioned, and sagging. The length of the rope can be easily adjusted by winding it around a circular cross-section like a log-shaped pulley. One turn can adjust the circumferential length, that is, the length of πD, which is about three times the diameter. If you wrap it around a 10 cm diameter log, you can adjust the length and tension by about 31.4 cm. A 5 cm diameter can be finely adjusted to 15 cm.

Image side view of how to enjoy (A) Hammock (B) Tilt hammock for reading (C) Aerial tent Exploded view of rope tension Example of curve configuration of upper and lower surfaces of arcuate support legs (A) Concentric circles (B) Circles with the same radius and parallel displacement (C) Small circle at the top, large circle at the bottom (D) Large circle at the top, small circle at the bottom (E) Upper circle and parabola (F) Parabola and lower circle (G) Parabola with different lowest points Perspective view of arcuate support leg, cross-sectional view of support leg member (A) Rectangular cross section (B) Rail type, I-shaped cross section Side view of the extension rope received over the entire length of the support leg, cross section of the member and position of the rope When each of the two ropes makes a loop around the bottom surface of the support leg, the reaction force is dispersed and supported inside the support leg. (A) Rectangular cross-section groove and rope (B) Rail type, I-shaped cross section bottom groove and rope (C) Rope hooked on the bottom of the upper flange, (D) Bulkhead rib Rope passed through the scallop hole of Front view of support leg with one loop around the horizontal horizontal member of the diagonal member. (A) Triangular type (B) Trapezoidal type (C) Rectangular type with parallel bars Front view of the support leg with the extension rope wound up to the vicinity of the horizontal cross member of the diagonal member (A) Triangular type (B) Trapezoidal type (C) Parallel bar rectangular type Example of a device for grounding the bottom of the support leg (A) Example of a side view in which the bottom of the bow is a horizontal straight line of a fixed length (B) A detachable attachment that matches the bottom of the bow, a pedestal with a straight horizontal length of a fixed length, and a jig Example of a side view with a pedestal (C) Example of stacking newspapers, magazines, etc. on both sides of a curved surface for balance Example of improved rectangular support end of support leg (A) Example of cross-sectional view with horizontal end of support leg (B) Example of cross-sectional view with smoothly rounded end of support leg (C) Support leg Example of a cross-sectional view of wearing round shoes with filler at the tip (D). E) Example of a side view of a detachable attachment that matches the bottom of the support leg, with a fixed length horizontal straight pedestal and a jig pedestal. Three examples of tilting hammocks for reading to prevent overturning (A) Example of extending the pedestal by increasing the rigidity of the pedestal by removing an anchor to prevent lifting (B) Example of supporting with a detachable attachment that fits the curved surface (C) Rotating backwards , Newspapers to prevent tipping over, and pedestals for receiving magazines

The more horizontal the hammock rope, the greater the tension. For this reason, if the hollow pipe support member is stretched too much, there is a weak point of the joint, which is easily broken. In addition, since the hollow pipe material itself is hollow and circular, and has no height, the resistance bending moment is not sufficient. The cross section of the supporting leg is a standard rectangular cross section that can secure a high height and has a large resistive bending moment. The cross-sectional height is basically a concentric circular shape with an equal cross-section for the sake of manufacturing simplification. However, if it becomes too thin in the vicinity of the apex, it loses strength, so it is easier to manufacture if the height remains the same. The material is basically steel plate, but wood, plywood, laminated wood, plastic, reinforced plastic, aluminum, duralumin, or a composite made of a combination thereof can also be considered. Even if the cross-sectional shape is a rectangular box and the outer shell is made of a strong steel plate, the inside of the box should be filled with mortar to maintain the shape so as not to deform or collapse. However, it is necessary to consider the filling material. The mortar becomes more rigid, so it becomes harder to deform, but it becomes heavier and harder to move. Foaming mortar is light, but strength increase is small. A hollow structure in which the hollow cylinder 34 shown in FIG. 5 is set and filled with mortar 35 between the steel and the cylinder is light and strong, so it is best if it can be constructed well. It is also effective to insert reinforcing partitions at regular intervals against torsion. If a groove is provided at the lower end for the rope to be inserted into, a circular groove can be easily formed in the steel plate during manufacturing.

FIG. 4 shows a perspective view of the supporting leg and a sectional view of the supporting leg member. The two arcuate supporting legs with excellent elasticity have a cross-sectional shape formed between the two curved lines of the upper and lower sides of the legs, and the standard cross-section is a substantially rectangular cross-section with high resistance to bending moment. However, rail-type, I-shaped cross-sections are also possible, which are easier to fabricate and whose resistive bending moment is not much different from that of a rectangle. The arcuate support legs seen from the side are shown in Fig. 3 (A) two concentric circles, (B) two circles with the same radius but with the center shifted, (C) two circles with a small circle at the top and a large circle at the bottom, and (D ) 2 circles with a large circle at the top and a small circle at the bottom, (E) a circle at the top and a parabola at the bottom, (F) a parabola at the top and a circle at the bottom, and (G) a parabola at the top and bottom. Form. Of course, there are times when I draw freehand. The separation, the distance, between the two curves is the section height h to resist the bending moment. When cutting the steel plate, if two circles with the same radius (B) with the center moved are set in the approximate crescent shape of Fig. 3, the next support leg circle can be cut by simply shifting the circle with the same radius. There is no material loss and the production is fast. In this application, many drawings are drawn with concentric circles, but the cross-sectional height becomes uniform and it seems easy, but the material loss is large. In the general crescent shape, the height becomes maximum near the center of the support leg span and decreases toward the apex. In the case of a rectangular section, if the outer shell is made of steel plate and filled with mortar, it can resist torsional deformation and crushing. Partitions may be provided inside at regular intervals. If it is a rail type or I type, it may be possible to omit the steel plate on one vertical side. However, since the torsional deformation is inferior, consideration is necessary.
Structurally, it is also necessary to increase the crotch opening resistance and fall resistance between the two support legs at the bottom of the diagonal section that serves as a bridge. The two supporting legs, viewed from the front, are triangular, trapezoidal, and rectangular with parallel bars. Since the horizontal force of crotch opening acts on the two supporting legs, horizontal cross members are provided everywhere between the two supporting legs. In particular, the number is increased in the vicinity of the lower portion. The horizontal cross member can be freely attached and detached by providing a horizontal through hole 28 in the side plate 37 of the rectangular cross section of the support leg so as to correspond to the three types of shapes when viewed from the front. , convenient for transportation. The length of the horizontal horizontal member is the longest for the rectangular type of parallel bar, and it is possible to divert it, but it is better to prepare it according to the length according to the above three types. This is because the thread in the middle of the cross member becomes a cross-sectional defect more or less. For clamping horizontal beams, it is better to use angled fillers to create a vertical surface. If hollow mortar is used, the horizontal through hole will penetrate the hollow cylinder 34, so it is necessary to consider whether to incorporate the hollow cylinder in the horizontal direction as well, or to drill the holes after the mortar has hardened sufficiently.

When anchored at the apexes of both ends of the arch-shaped support legs, the two ropes of the hammock are anchored at the apexes either as they are or as a single rope. In this case, since a large force is concentrated on the vertex, sufficient strength design is required. Since the apex portion of the crescent-shaped support leg is thin, winding a wire rod around the diagonal member also helps to reinforce the strength of the support leg. Also, if the ropes of the hammock are bundled together and concentrated on the apex of the triangular leg when viewed from the front, the hammock will easily roll over due to shaking. It goes without saying that if two ropes are separated, the supporting legs will have a trapezoidal shape when viewed from the front, and the rectangular shape of the parallel bars will be stable. In the aerial tent, the tent itself on the rope falls over in the triangular type. When viewed from the front, the two apexes are horizontally spaced, and the parallel bars of (C) in Figs. 6 and 7 (C) are used as a rectangular support type, and the two ropes are stretched in parallel to stabilize it.

A groove is provided in the rectangular cross section of the support leg member, the rail, and the lower part of the I-shape, and the rope is hung over the entire length of the curved surface of the support leg. and increase safety. With the I-type rail, it is also possible to hook the rope to the center of the bottom of the upper flange, which is economical and requires no processing. The two ropes of the hammock or aerial tent are looped around each supporting leg and closed to increase stability. By using a single rope, the bending of the hammock is received, and the reaction force is dispersed inside the supporting leg member. The length of the extension rope requires the circumference of the support leg. A rope that is at least twice the length of the hammock rope when anchored at the apex forms a single closed loop. If the rope is stretched outside the lower surface of the supporting leg member cross section, the rope will protrude at the central base and be trampled, so the lower side of the rectangular member of the supporting leg will not reach the central base. Make a groove to store the rope inside. For aesthetic reasons, it is preferable to provide a groove on the whole, pass a rope through it, and attach a decorative plate 14 to the outside. Since the rope hangs in the hammock in the air at the center of the span L, it can be easily fitted into the groove of the supporting leg like a bicycle chain. The rope can be easily inserted later by attaching a long wire and pulling it. The deflection amount is set based on the initial assumption. Although it is one wheel, the length can be easily adjusted by inserting a pulley-like log 33 in the middle because the rope between the two vertices hangs when the hammock is first set and is slack. Adjustable. You can find the right amount of tension to your liking. For example, if one roll is made on a 10 cm log, the circumference can be shortened by 10π=31 cm. However, this should be adjusted with the understanding that the tension of the hammock and aerial tent ropes will increase accordingly. At the same time, it should be understood that if the amount of deflection at the center where the person is seated is 1/2, the tension will increase by 1.5 to nearly 2 times.

Although it is not always necessary if the material is a steel plate, it is double safe if a pipe is laid in the groove in case the diagonal member suddenly breaks. It is conceivable to provide a groove in an arcuate rectangular section and embed the pipe therein. It is good to put filler in the interface with the pipe or fill the surroundings with a flexible material. A full cross-section pipe or a split pipe is recommended to increase strength and safety. If the groove is rough, the rope will wear out, so a half-split pipe or, in extreme cases, a rubber hose may be used as a measure against wear. When laying the rope, it is better to pass it through the inside of the pipe in advance. The rope can be easily inserted later by attaching a long wire and pulling it. If a groove is provided in the cross section, it is also considered to cover the bottom with a veneer.

If the bottom part of the supporting leg, which is in contact with the curved surface, is a straight part that is partially horizontal when viewed from the side, the tatami mat will be more stable, and the wear, shaking and rotation of the tatami mat will be suppressed. In this case, you have to put up with the feeling of rocking, but since it is more fun to rock with the curved surface as it is, the tips of the supporting legs are devised. Since the rectangular support legs have a 90-degree angle at the tips of the two legs where they come in contact with the floor, as an alternative, the bottom of the rectangle shown in Fig. 9 (A) should be finished horizontally or (B) should be smoothed. Either (C) insert a filler 29 and put something like a sturdy round shoe 36 on it, or (D) use a thick plate as a pedestal and provide a groove 16 that matches the inclination, ( E) It is also conceivable to prepare a detachable pedestal and attachment 18 that conforms to the curved surface of the bottom of the support leg. It goes without saying that if the bottom is finished horizontally, the tip will become a trapezoid like a horse's claw, but since horizontal force is taken by the horizontal cross member, it will not bite. For support on soft ground, it is advisable to prepare a resin cutting board, a thick board, and a mat on top and bottom to distribute the load.

It is important that a reading hammock that rotates and has one apex elevated can be adjusted to a comfortable position. The tilt angle can be freely adjusted. However, it can be said that up to 45 degrees is the limit because it falls backwards due to rotation.
With the sloping hammock, the lowest point is the center point, and the uplift that acts on one of the lower vertices, the balance of the left and right moments created by the center of gravity of the person's weight, and the pedestal from the ground pressure so that it does not sink into the ground. Find the length, width and thickness of For the uplift, which works against overturning due to rotation, it is pulled from the low top with a wire rope, etc., and anchored to the pedestal. If possible, one end of the pedestal should be extended to the ground position directly below the high peak on one side so that it does not sink into the ground, etc. It is safe from the left and right moment balance. In case of overturning due to rotation, the length of the pedestal beyond the support point and sufficient rigidity are sufficient so that the downward resistance moment of the lowest point and the support point is greater than the lifting moment obtained by subtracting the anchor fixing force from the uplift. to design. If the pedestal is short, the overturning moment to the rear will be dominant and the whole will overturn, so it can be said that it is a place to hold on. If the pedestal is thin, a force that warps the end of the anchor part will act, so it is necessary to lay a rail or the like under the pedestal to ensure that the force can be transmitted sufficiently without deformation, and to increase the moment of resistance. Figure 10 shows (A) an example in which the uplift anchor is removed and a rigid pedestal is provided, (B) an attachment pedestal to prevent tipping along the bottom surface of the support leg under the tipping side where the human load is applied from the support point. (C) Example of stacking newspapers, magazines, etc. as a cradle to prevent tipping over. Also, in order to reduce uplift, it is an option to put a weight on one end of the anchor part of the pedestal.

1 Hammock 2 Aerial tent 3 Rope 4 Support leg, support leg member 5 Vertex 6 Bottom, near the bottom at the center of the span 7 Diagonal member 8 Cross member, horizontal cross member 9 Rectangular cross section 10 Rail type, I type cross section 11 Cross section height h, (A) upper flange, upper edge, upper part (B) lower flange, lower edge, lower surface, lower part 12 grooves, rope hooking part 13 pipe 14 veneer 15 reaction force dispersing the rope made into one ring 16 thick plate base , a stopper groove 17 with an oblique angle, a member section 18 with a horizontal straight line near the bottom of the curved surface, a detachable attachment along the curved surface near the bottom of the curved surface, and an adjustment jig 19 arranged on both sides of the pedestal near the bottom of the curved surface. Newspaper, magazine 20 person reading, book in hand
21 circle, center line of slanted circle 22 anti-fall, anti-uplift anchor 23 pedestal 24 horizontal pedestal 25 bulkhead 26 scalloped hole 27 support leg flank plate of horizontal cross member 28 Horizontal through hole 29 Angle adjustment filler 30 attachment, adjustment jig 31 piled newspapers, magazine 32 support base 33 pulley, log 34 hollow cylinder 35 filling mortar 36 round shoe 37 lateral plate × center of circle

Claims (5)

The two support legs are supported at the center of the span, and form an arcuate shape having apexes at both ends without providing a joint node in the middle of the span. By making the cross section of the supporting leg member a constant cross section in which the cross-sectional height of the supporting leg member is uniform throughout the supporting leg, or a variable cross section in which the cross-sectional height is gradually changed so as to be maximum near the bottom part in the center of the span, A self-anchored hammock or a self-anchored aerial tent for both indoor and outdoor use, characterized in that the support legs are streamlined in a substantially concentric circle or crescent shape when viewed from the side. The upper edge and lower edge of the cross section of the support leg member are formed by two concentric circles, two circles with the same radius but with the center shifted, two circles with different large and small radii, a circle and a parabola, or a combination of parabolas. The indoor/outdoor self-anchored hammock or self-anchored aerial tent according to claim 1, characterized in that it consists of upper and lower curves. The two ropes of the hammock or aerial tent are respectively extended from the apex and closed in one turn along the grooves provided in the lower section of the two supporting leg members or the hooks in the upper section of the support leg members. 3. A self-anchored hammock or a self-anchored aerial tent for both indoor and outdoor use according to claim 1 or 2, characterized in that it is set up by one wheel. Two ropes of the hammock or aerial tent each extend from said apex and encircle between the two support legs a horizontal cross member or projection disposed between the diagonal members of said two support legs. The self-anchored hammock or self-anchored aerial tent for both indoor and outdoor use according to claim 1 or 2, characterized in that the hammock or aerial tent for both indoor and outdoor use is characterized by the fact that it forms a single closed wheel. Two horizontal beams of a hammock or aerial tent each extending from said apex and wrapped around respective diagonal portions of said two support legs and placed on diagonal portions of said two support legs. 3. A self-anchored hammock or self-anchored aerial tent for indoor and outdoor use according to claim 1 or 2, wherein the hammock is anchored in the vicinity of the part or the protrusion, respectively.

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