JP2012235968A - Portable chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight of a tripod type portable chair by integrating a seat part and a leg part.SOLUTION: The chair is configured to be switchably put in a folded and overlapped condition with a hinge part as a center or a developed condition with the hinge part as the center by connecting three rods 10, 20 and 30 via the hinge part 40 so as to be freely swingable, and is further configured to use a lower part side below the hinge part for a leg part and an upper part side above the hinge part as a seating part (seat 80). At the hinge part, first and second rods 10 and 20 out of three rods can be overlapped and developed each other, holding a third rod 30 between them, and to an imaginary plane passing through respective shaft lines of mutually developed first and second rods, the third rod can be developed at a certain angle.

Description

  The present invention relates to a tripod type portable chair that can be compactly folded as required.

  The following Patent Document 1 discloses a tripod type portable chair. In this portable chair, the seat and legs are placed up and down across the pedestal, and the seat and legs can be folded independently of the pedestal and can be converted into a deployed state. It is said that. The seating part is in the upper part of the pedestal, and can be seated by being unfolded, and can be used as a grip part when the seating part carries the entire chair by being folded. On the other hand, the leg is located at the bottom of the pedestal, and the cylindrical body that can be divided into three in the vertical direction is deployed in three directions, so that the entire chair can be stably supported, and the legs that are deployed in three directions are cylindrical. By being returned to the body, it is possible to carry it compactly.

JP 2004-344609 A

However, the pedestal receives the weight of the occupant seated on the seat and transmits it to the legs, so that it requires a certain strength and is heavy.
In view of such a problem, an object of the present invention is to reduce the weight of a portable chair by eliminating a pedestal and integrating a seating portion and a leg portion.

According to the first aspect of the present invention, three rods are swingably coupled by a hinge portion, and can be converted into a state in which the rod is folded around the hinge portion and polymerized and a state in which the hinge portion is deployed. The lower part from the hinge part is a leg part, and the seat part is arranged above the hinge part to be a chair,
The hinge portion is configured such that the first and second rods of the three rods can be overlapped and deployed with the third rod interposed therebetween, and the first and second rods deployed with each other. The portable chair is characterized in that the third rod can be deployed at an angle with respect to a virtual plane passing through each axis of the.
According to the first invention, there is no member like the pedestal in the above-mentioned patent document 1, and the lower side of the three rods slidably coupled by the hinge portion is the leg portion, and the upper side is the seat portion, and is portable. Since the chair is configured, it is possible to reduce the weight with a lean configuration.

According to a second aspect of the present invention, in the first aspect, the hinge portion is configured such that the second sphere is slidably inserted into the first sphere, and the third sphere is further inserted into the third sphere. A sphere is relatively slidably inserted, the first sphere is inserted into the first rod, the second sphere is inserted into the second rod, and the third sphere is inserted into the third rod. The first and second spheres are coupled to the rods, respectively, so that the first and second spheres can be overlapped and deployed with each other with the third rod interposed therebetween. Cutout portions are formed so that the third rod can be expanded at an angle with respect to a virtual plane passing on the axes of the first and second rods.
According to the second invention, since the hinge portion is configured by combining three spheres respectively coupled to the three rods, the hinge portion for enabling the three rods to be deployed in three directions is lightweight. Can be configured.

According to a third aspect of the present invention, in the first or second aspect of the invention, the first rod and the second rod have a bowl shape having a receiving surface on the third rod side, and the three rods are superposed. The receiving surfaces of the first rod and the second rod are aligned with each other, and as a result, the third space is formed in a cylindrical space formed by the receiving surfaces of the first rod and the second rod. The rod is housed.
According to the third invention, when the three rods are superposed, the remaining one rod is stored in the cylindrical space formed by the two rods, so that it looks like one rod. Can be folded and can be carried compactly when carried.

According to a fourth invention of the present invention, in any one of the first to third inventions, the first rod and the second rod are set shorter than the third rod, and the hinge portion of the third rod is used. On the upper side, a slider is slidably provided on the outer periphery of the third rod, and on the third rod, on the lower side of the slider, a stopper for determining a lower limit position of the slider slide is provided. A flexible seat is stretched between the upper end portions of the first rod and the second rod and the upper end portion of the slider so as to be a seating portion, and the hinge portion and the upper end portion of the first rod are A first link is swingably provided between a first support portion provided therebetween and a third support portion provided below the upper end portion of the slider, and the hinge of the second rod A second support part and the third support part provided between the upper part and the upper part Second link, characterized in that it is provided swingably between.
According to the fourth aspect of the invention, since the seat portion is configured by the flexible seat, the chair can be folded in a compact manner when being carried. In addition, since a slider and a link are provided for each rod, each rod can be developed as a chair by sliding the slider downward, and each rod can be moved by sliding the slider upward. The chair can be folded as a polymerized state. As described above, since the rod can be unfolded and superposed by sliding the slider, the operation can be performed smoothly.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the outer peripheral surface of the third rod and the inner peripheral surface of the slider are mutually opposed to relative rotation in the circumferential direction. An engageable rotation stop is provided.
According to the fifth aspect of the present invention, since the rotation preventing portion is provided between the third rod and the slider, the slider is prevented from rotating in the circumferential direction with respect to the third rod, and is coupled to the slider. It is possible to prevent the unfolding and superposition operations of the first rod and the second rod from being disturbed through the link.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, in the state where the three rods are superposed, the length from the hinge portion to the lower end portion of the third rod is the first length. It is characterized by being set longer than the length from the hinge part to the lower end part of the rod and the second rod.
According to the sixth invention, when the three rods are superposed, the third rod located at the center protrudes from the other two rods, so that the three rods are superposed and like a cane When used, a force is applied only to the third rod and no force is applied to the first rod and the second rod, so an external force is applied to the hinge portion via the first rod and the second rod. This can prevent the hinge part from being damaged.

A seventh aspect of the present invention is the virtual plane according to any one of the fourth to sixth aspects, wherein the axes of the first link and the second link with respect to the third rod pass when the three rods are overlapped. The positions of the first support part, the second support part, and the third support part are set so that the inclination direction of the first and second support parts is opposite to the inclination direction when the three rods are deployed. A spring is fixed above the slider of the three rods, and in a state where the three rods are superposed, the spring biases the slider downward.
According to the seventh invention, the inclination directions of the first link and the second link relative to the third rod are opposite to the inclination direction when the three rods are unfolded when the three rods are superposed. Therefore, the first rod and the second rod receive a biasing force by a spring in the opposite direction to the deployed direction via the first link and the second link, and each time the chair is carried, It is possible to prevent the rod from being inadvertently expanded. Further, since the urging force of the spring is transmitted to the hinge portion via the first link, the second link, the first rod, and the second rod, abnormal noise due to backlash of the hinge portion when carrying the chair. Can be suppressed.
Furthermore, when deploying the three rods from the superposed state, the inclination direction of the virtual plane through which the axes of the first link and the second link with respect to the third rod pass is the direction in which the three rods are deployed. After switching manually, the biasing force of the spring acts in the direction of expanding the three rods via the slider and link, so that the expansion of the three rods is automatically performed within the range in which the spring biasing force works. The operation can be facilitated.

It is a perspective view of one embodiment (folded state) of the portable chair concerning the present invention. It is a rear view of the said embodiment (in the middle of expansion | deployment). It is a perspective view of the said embodiment (expanded state). It is an expansion perspective view of the sheet | seat part of the said embodiment. It is an expansion perspective view of the hinge part part of the said embodiment. It is a fragmentary sectional top view of the 1st spherical body which comprises the hinge part of the said embodiment. It is a fragmentary sectional top view of the 2nd spherical body which comprises the hinge part of the said embodiment. It is a fragmentary sectional top view of the 3rd spherical body which comprises the hinge part of the said embodiment. It is an expansion perspective view of the joint part of the 1st rod and link of the said embodiment. It is an expansion perspective view of the slider part of the said embodiment. It is explanatory drawing of the wire accommodating part of the said embodiment. It is the top view, front view, and bottom view of a wire guide metal fitting in the wire storage part of the embodiment.

An embodiment of the present invention will be described with reference to the drawings.
The portable chair of this embodiment is configured to be a chair when unfolded, and to be a cane when folded, FIG. 1 shows a state where it is folded and becomes a cane, and FIG. FIG. 3 shows a state where the deployment is completed and the chair can be used.
As shown in FIGS. 1 to 3, the chair has three rods 10, 20, and 30 that are swingably coupled by a hinge portion 40, and is folded and folded around the hinge portion 40. It is possible to switch to a state where the hinge portion 40 is developed around the hinge portion 40, a lower portion from the hinge portion 40 is a leg portion, and a seating portion is disposed above the hinge portion 40 to form a chair.
The hinge portion 40 is configured such that the first rod 10 and the second rod 20 of the three rods can be overlapped and expanded with the third rod 30 interposed therebetween, and the first rod 10 expanded to each other. The third rod 30 can be deployed with an angle with respect to a virtual plane passing on the axes of the rod 10 and the second rod 20.
With this configuration, there is no member like the pedestal in Patent Document 1, and the lower side of the three rods 10, 20, 30, which are slidably coupled by the hinge portion 40, are leg portions, and the upper side is seated. Since the portable chair is configured as a part, the weight can be reduced with a lean configuration.

As shown in FIGS. 5 to 8, the hinge portion 40 is configured such that the second sphere 42 is inserted into the first sphere 41 so as to be relatively slidable, and the third sphere 42 is inserted into the third sphere 42. A spherical body 43 is inserted so as to be relatively slidable. Therefore, the diameter of each sphere 41, 42, 43 is made smaller in the first, second, third order.
Each of the spheres 41, 42, 43 is formed by combining two hemispheres, and the first sphere 41 is welded by combining hemispheres 411 and 412 as shown in FIG. It is said that. As shown in FIG. 7, the second sphere 42 is a combination of hemispheres 421 and 422 and welded into a single sphere, and the third sphere 43 is a combination of hemispheres 431 and 432 as shown in FIG. And welded into a single sphere. As shown in FIG. 6, a hinge shaft 414 is fixed to the central portion between the hemispheres 411 and 412 of the first sphere 41 by welding. Further, as shown in FIG. 7, holes 424 and 425 for allowing the hinge shaft 414 to pass therethrough are respectively provided in the central portions of the hemispheres 421 and 422 of the second sphere 42.
The first sphere 41 is connected to the first rod 10, the second sphere 42 is connected to the second rod 20, and the third sphere 43 is connected to the third rod 30 by welding.

The first sphere 41 and the second sphere 42 are arranged so that the first rod 10 and the second rod 20 can be overlapped with each other with the third rod 30 interposed therebetween and can be deployed. Notches 413, 423, 433, and 434 so that the third rod 30 can be deployed at an angle with respect to a virtual plane that passes through the axes of the deployed first rod 10 and second rod 20. Are formed respectively.
Specifically, as shown in FIG. 8, the hinge shaft 414 passes through the third sphere 43, and in this state, the third sphere 43 is slidable in the vertical direction in FIG. 434 is formed. The notches 433 and 434 are formed as point targets with respect to the spherical center of the third sphere 43. As shown in FIG. 7, the third rod 30 fixed to the third sphere 43 passes through the second sphere 42, and the relative movement between the second rod 20 and the third rod 30 as described above. A notch 423 is formed so as to enable this. Furthermore, as shown in FIG. 6, the first sphere 41 is penetrated by the third rod 30 fixed to the third sphere 43 and the second rod 20 fixed to the second sphere 42, respectively. A notch 413 is formed so that the first rod 10, the second rod 20, and the third rod 30 can be moved relative to each other. 6 and FIG. 7 each show only one notch, each sphere 41, 42 has a spherical center of each sphere 41, 42 as in the case of the third sphere 43. On the other hand, notches are respectively formed so as to be point targets, and portions below the rods 10 and 20 are joined.

6 and 7 show the positional relationship between the spheres 41, 42, 43 and the rods 10, 20, 30 when the three rods 10, 20, 30 are moved to the overlapped state and the expanded state. Therefore, the position of the third rod 30 in the notches 413 and 423 is indicated by a two-dot chain line circle. 6 and 7, A is a state in which three rods 10, 20, and 30 are superposed, and B is the first rod 10 and the second rod with the third rod 30 interposed therebetween. In the state in which the rod 20 is deployed laterally, the third rod 30 is deployed at an angle with respect to a virtual plane passing through the respective axes of the first rod 10 and the second rod 20 deployed relative to each other. Indicates the state that has been performed.
In addition, when the 1st rod 10 and the 2nd rod 20 are expand | deployed laterally by changing the partial shape of the notch part 423 as shown by a dashed-two dotted line like FIG. Since the third rod 30 is pushed from the position B to the position C by the part 426 of the edge of the notch 423 of the sphere 42, the third rod 30 is pushed between the first rod 10 and the second rod 20. Can be deployed in conjunction with deployment. That is, the first rod 10, 20, and 30 are deployed in the first operation in which the first rod 10 and the second rod 20 are deployed laterally with the third rod 30 interposed therebetween. The first rod 10 and the second rod 20 are separated from the second operation of expanding the third rod 30 at an angle with respect to a virtual plane passing through the axes of the first rod 10 and the second rod 20. The third rod 30 can also be deployed by only one operation of deploying the second rod 20 sideways.
Thus, since the hinge part 40 is comprised by the combination of the three spherical bodies 41, 42, and 43 respectively connected to the three rods 10, 20, and 30, the three rods 10, 20, and 30 The hinge part for enabling deployment in the direction can be configured to be lightweight.

As shown in FIGS. 1 to 3, 5 to 7, and 9, the first rod 10 and the second rod 20 have a bowl shape having a receiving surface on the third rod 30 side. Thus, when the three rods 10, 20, and 30 are superposed, the receiving surfaces of the first rod 10 and the second rod 20 are aligned with each other, and as a result, the first rod 10 and the second rod 20 are combined. The third rod 30 is housed in a cylindrical space formed by the receiving surface.
In this way, when the three rods 10, 20, 30 are superposed, the remaining one rod 30 is housed in the cylindrical space formed by the two rods 10, 20, as if 1 It can be folded like a book rod and can be carried compactly when carried.
2, 3, and 5, the first rod 10 and the second rod 20 having a hook shape are provided with reinforcing ribs along an arc cross section forming the hook shape. .

As shown in FIGS. 2 and 3, the first rod 10 and the second rod 20 are set shorter than the third rod 30. A slider 50 is slidably provided on the outer periphery of the third rod 30 above the hinge portion 40 of the third rod 30. The slider 50 is provided below the slider 50 on the third rod 30. A stopper 31 for determining the lower limit position of 50 sliding is provided.
A seat 80 having flexibility is stretched between the upper end portions of the first rod 10 and the second rod 20 and the upper end portion 52 of the slider 50 so as to be a seating portion. In this case, the sheet 80 is made of a woven fabric using synthetic fibers.
Between the first support part 12 provided between the hinge part 40 and the upper end part of the first rod 10 and the third support part 51 provided below the upper end part 52 of the slider 50, the first is provided. The link 61 is swingably provided, and the second link is provided between the second support portion 22 and the third support portion 51 provided between the hinge portion 40 and the upper end portion of the second rod 20. 62 is swingably provided.
The first link 61 and the second link 62 and the first rod 10 and the second rod 20 are coupled to the ring bodies 12 and 22 which are fixed to the first rod 10 and the second rod 20 by welding. The ring bodies 612 and 622 fixed to the tips of the first link 61 and the second link 62 are connected to each other, and the first rod 10 and the second rod are also provided around the ring bodies 12 and 22. The ring bodies 13 and 23 are fixed to the ring 20 by welding. The first link 61 and the second link 62 are connected to the first rod 10 and the second rod 20 by the connection between the ring bodies 12 and 22 and the ring bodies 612 and 622. 23 is provided, the lower ends of the first link 61 and the second link 62 are engaged with the ring bodies 12 and 22 when the slider 50 is pushed down for deployment of the rods 10, 20, 30. Is prevented. That is, the ring bodies 13 and 23 restrict excessive movement of the ring bodies 12 and 22 downward.
The first link 61 and the second link 62 and the third support portion 51 are coupled to the ring bodies 611 and 621 fixed to the tips of the first link 61 and the second link 62 and the third support. The ring bodies 511 and 512 that are welded and fixed below the portion 51 are connected to each other.
According to such a configuration, since the seating portion is configured by the seat 80 having flexibility, the chair can be folded in a compact manner when being carried. Further, since the slider 50 and the links 61 and 62 are provided for the rods 10, 20, and 30, the rods 10, 20, and 30 are expanded to form chairs by sliding the slider 50 downward. By sliding the slider 50 upward, the chairs can be folded with the rods 10, 20, 30 in a superposed state. Since the rods 10, 20, and 30 can be unfolded and polymerized by sliding the slider 50 as described above, the operation can be performed smoothly.

As shown in FIGS. 2 to 4, the sheet 80 is sewn in a triangular shape as a whole, and the upper end 52 of the slider 50 is attached in such a manner that the front end of the sheet 80 is divided in two, and the slider 50 is sandwiched and tied to the front end. It is done by. Specifically, the upper end portion 52 is formed by welding a member orthogonal to the slider 50 to the slider 50, and the leading end of the sheet 80 is bound to the slider 50 on the upper side of the orthogonal member.
As shown in FIG. 9 with respect to the first rod 10, the first rod 10 and the second rod 20 of the seat 80 are attached to the upper end portions of the bag body that covers the upper end portion of the first rod 10. 81 is stitched to a sheet 80 at a position corresponding to the upper end portion of the first rod 10, and the bag body 81 is put on the upper end portion of the first rod 10. Further, the loop-shaped hooking band 82 provided adjacent to the bag body 81 is hooked on a protrusion (not shown) protruding from the side wall of the upper end of the first rod 10, whereby the sheet 80 is 1 so as not to be detached from the rod 10 of the first. The second rod 20 is the same as that of the first rod described above.
The bag body 81 and the hooking band 82 are drooping bands provided on the attachment portion of the seat 80 with the first rod 10 and the second rod 20 so as to surround the first rod 10 and the second rod 20. 83 and 84 are sutured.
As shown well in FIG. 4, reinforcing cloths 85 and 86 are stitched to corners and ends of the sheet 80 in order to reinforce the attachment portions of the first rod 10 and the second rod 20.

As well shown in FIG. 10, between the outer peripheral surface of the third rod 30 and the inner peripheral surface of the slider 50, there are provided rotation stop portions 53 that can be engaged with each other with respect to relative rotation in the circumferential direction. ing. Specifically, the rotation preventing portion 53 is provided with a slit 531 in the axial direction of the third rod 30 in the slider 50, and a protrusion 532 is provided on the surface of the third rod 30 so as to be fitted in the slit 531. Made up. The slit 531 provided in the slider 50 is closed at the upper and lower ends of the slider 50 so that the slider 50 is not opened by the slit 531.
As described above, since the rotation preventing portion 53 is provided between the third rod 30 and the slider 50, the slider 50 is prevented from rotating in the circumferential direction with respect to the third rod 30. It is possible to prevent the unfolding and superposition operations of the first rod 10 and the second rod 20 from being disturbed via the links 61 and 62 coupled to the.

As shown in FIG. 1, in a state where the three rods 10, 20, and 30 are superposed, the length from the hinge portion 40 to the lower end portion of the third rod 30 is the first rod 10 and the second rod 10. The length of the rod 20 is set slightly longer than the length from the hinge part 40 to the lower end part.
Thus, when the three rods 10, 20, 30 are superposed, the third rod 30 located in the center protrudes from the other two rods 10, 20, so the three rods 10, Since the force is applied only to the third rod 30 and no force is applied to the first rod 10 and the second rod 20 when the 20, 30 is superposed and used like a cane, the first rod It is possible to prevent an external force from being applied to the hinge portion 40 via the 10 and the second rod 20 and to prevent the hinge portion 40 from being damaged.

Although not clearly shown in the figure, when the three rods 10, 20, and 30 are superposed, the inclination direction of the virtual plane through which the axes of the first link 61 and the second link 62 pass with respect to the third rod 30 is three. The positions of the first support part 12, the second support part 22, and the third support part 51 are set so as to be opposite to the inclination direction when the rods 10, 20, 30 are deployed. . 1 to 3, the spring 35 is fixed above the slider 50 of the third rod 30, and in the state where the three rods 10, 20, 30 are overlapped, the spring 35 is a slider. 50 is biased downward.
According to such a configuration, the inclination direction of the imaginary plane through which the axes of the first link 61 and the second link 62 with respect to the third rod 30 pass is 3 when the three rods 10, 20, 30 are overlapped. Since the rods 10, 20, 30 are in the opposite direction to the direction of inclination when the rods 10, 20, 30 are deployed, the first rod 10 and the second rod 20 are interposed via the first link 61 and the second link 62. Receives the urging force of the spring 35 in the direction opposite to the direction of deployment, and can prevent the rods 10, 20, and 30 from being inadvertently deployed when carrying the chair.
Further, since the urging force of the spring 35 is applied to the hinge portion 40 through the first link 61, the second link 62, the first rod 10, and the second rod 20, the hinge is used when carrying the chair. Generation | occurrence | production of the abnormal noise by the play of the part 40 can be suppressed.
Furthermore, when unfolding the three rods 10, 20, and 30 from the superposed state, the inclination direction of the imaginary plane through which the axes of the first link 61 and the second link 62 with respect to the third rod 30 pass, After the three rods 10, 20, 30 are manually changed in the direction of deployment, the urging force of the spring 35 causes the three rods 10, 20, 30 to move through the slider 50 and the links 61, 62. Since it acts in the direction of deployment, the three rods 10, 20, 30 can be automatically deployed within the range in which the biasing force of the spring 35 is applied, and the deployment operation can be facilitated.

As shown in FIG. 2, a wire 79 is stretched between the rods 10 and 20 below the hinge portion 40 of the first rod 10 and the second rod 20. That is, one end of the wire 79 is fixed in the receiving surface of the hook-shaped first rod 10, and the other end is fixed in the receiving surface of the hook-shaped second rod 20. By providing the wire 79 in this way, when a large load is applied on the seat 80 and a force is applied to open the legs below the hinge portions 40 of the rods 10 and 20, the force is applied. Is partly assigned to the wire 79 to prevent the rods 10 and 20 from being deformed.
When the three rods 10, 20, 30 are superposed and folded, the wire 79 is clamped between the three rods 10, 20, 30 by being bent and deformed.

As shown in FIG. 2, the wires 71 and 72 are stretched below the wire 79 between the third rod 30 and the first rod 10 and the second rod 20, similarly to the wire 79. Has been. Similarly to the wire 79, when the wires 71 and 72 are subjected to a force that opens a leg portion below the hinge portions 40 of the three rods 10, 20, and 30 when a large load is applied to the seat 80, Part of the force is shared by the wire 79 to prevent the rods 10, 20, and 30 from being deformed.
As shown in FIGS. 2 and 11, each wire 71 and 72 is configured such that the extra length portion is accommodated in the cylinder of the third rod 30 which is a cylindrical body. The wires 71 and 72 are combined into a single wire 74 in the third rod 30 and locked to a fixing pin 77 provided at an upper end portion in the third rod 30. A spring 75 is interposed between the wire 76 locked to the fixing pin 77 and the wire 74 so that the wires 71 and 72 do not become loose.
A wire guide fitting 78 is interposed between the wires 71 and 72 and the wire 74. The wire guide fitting 78 is fitted and fixed in the third rod 30 immediately above the hole that penetrates when the wires 71 and 72 are accommodated in the third rod 30, and is well shown in FIG. As shown, a groove 781 for allowing the wires 71 and 72 to pass in the vertical direction is formed on the surface of the wire guide fitting 78, and the groove 781 is branched at the lower end portion to form grooves 782 and 783. The wires 71 and 72 are separated and passed through the grooves 782 and 783. In the upper part of the groove 781, the wires 71 and 72 are integrally provided with a retaining member 73, and the three rods 10, 20, and 30 are developed so that the third rod 30, the first rod 10, and the second rod 20 are developed. When the wires 71 and 72 are stretched between them, the stopper 73 is locked to the upper end of the groove 781 so that the wires 71 and 72 are not loosened. Accordingly, when the three rods 10, 20, and 30 are deployed, the fixing positions of the retainers 73 with respect to the wires 71 and 72 are such that the wires 71 and 72 are the third rod 30, the first rod 10, and the second rod. It is set so that it can be stretched without slacking.

In FIGS. 1 to 3, reference numeral 32 denotes a buffer rubber body provided at the lower end of the third rod 30, and 11 and 21 denote buffer rubber bodies provided at the lower ends of the first rod 10 and the second rod 20. As described above, since the cushion rubber bodies 32, 11, and 21 are provided at the lower ends of the rods 10, 20, and 30, they are used as a chair as shown in FIG. 3 and as a cane as shown in FIG. In order to prevent the floor from being damaged, the interference sound with the floor can be suppressed.
In FIG. 1, 33 is a handle portion when used as a cane, and 90 is a rod portion to prevent rattling of the rods 10, 20, 30, links 61, 62, etc. when used as a cane. It is a cover band to wind.

The present invention is not limited to the appearance and configuration described in the above embodiment, and various modifications, additions, and deletions can be made without changing the gist of the present invention. For example,
All the 1.3 rods may be composed of round bars.
2. The hinge portion may be a combination of a plurality of hinge shafts.
3. The sheet is not limited to cloth, and various materials such as resin, metal, and paper are applicable.

DESCRIPTION OF SYMBOLS 10 1st rod 12 1st support part 20 2nd rod 22 2nd support part 30 3rd rod 31 Stopper 34 Spring 40 Hinge part 41 1st spherical body 413 Notch part 414 Hinge shaft 42 2nd spherical body 423 Notch 43 Third sphere 433, 434 Notch 50 Slider 51 Third support 53 Rotation stop 61 First link 62 Second link

Claims (6)

Three rods are slidably coupled by a hinge part, and can be switched between a state of being folded around the hinge part and a state of being unfolded around the hinge part. The seat is a leg, and a seating part is arranged above the hinge part to form a chair.
The hinge portion is configured such that the first and second rods of the three rods can be overlapped and deployed with the third rod interposed therebetween, and the first and second rods deployed with each other. A portable chair characterized in that the third rod can be deployed at an angle with respect to a virtual plane passing through each of the axes.   2. The hinge portion according to claim 1, wherein the second sphere is relatively slidably inserted into the first sphere, and the third sphere is relatively slidable into the second sphere. Inserted, the first sphere is coupled to the first rod, the second sphere is coupled to the second rod, and the third sphere is coupled to the third rod. In the sphere and the second sphere, the first and second rods of the first and second rods deployed so that the first and second rods can overlap and deploy with each other with the third rod interposed therebetween. A portable chair characterized in that notches are formed so that the third rod can be deployed with an angle with respect to a virtual plane passing through each axis.   3. The first rod and the second rod according to claim 1 or 2, wherein the first rod and the second rod have a bowl shape having a receiving surface on the third rod side, and when the three rods are superposed, the first rod and the second rod The receiving surfaces of the two rods are aligned with each other, and as a result, the third rod is housed in a cylindrical space formed by the receiving surfaces of the first rod and the second rod. Portable chair. In any one of Claims 1 thru | or 3, a said 1st rod and a 2nd rod are set short compared with a 3rd rod,
A slider is slidably provided on the outer periphery of the third rod above the hinge portion of the third rod,
A stopper for determining a lower limit position of sliding of the slider is provided below the slider on the third rod,
Between the upper end portions of the first rod and the second rod and the upper end portion of the slider is stretched so that a seat with flexibility becomes a seating portion,
The first link swings between a first support portion provided between the hinge portion and the upper end portion of the first rod and a third support portion provided below the upper end portion of the slider. A second link is slidably provided between the second support portion provided between the hinge portion and the upper end portion of the second rod and the third support portion. A portable chair characterized by   5. The rotation stop portion which can be engaged with each other against relative rotation in the circumferential direction is provided between the outer peripheral surface of the third rod and the inner peripheral surface of the slider. A portable chair characterized by In any one of Claims 4 thru | or 5, when the inclination direction of the virtual plane through which the axis line of the said 1st link with respect to a said 3rd rod and a 2nd link passes has overlapped three rods, Set the positions of the first support part, the second support part and the third support part so as to be in the opposite direction with respect to the inclination direction during deployment,
A portable chair, wherein a spring is fixed above the slider of the third rod, and the spring biases the slider downward in a state where the three rods are superposed.

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