Portable folding chair

Abstract

PURPOSE: To provide a portable folding chair which is simple in the structure, low cost, and capable of saving materials and which has many advantages such as convenient installation and use, and simple structure and disassembly.CONSTITUTION: A portable folding chair is equipped with a bearing bar assembly in the lower part and a seating part in the upper part. The bearing bar assembly is provided with vertically arranged four bearing bars and with folding bars that are arranged between the four vertical bearing bars and that are cross arranged. The upper part and the lower part are respectively assembled by means of assembly members, with a slip resistance layer installed in the lower part of the lower assembly member, and with a seating layer provided on the upper assembly member.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a portable folding chair, which belongs to the technical field of chairs. [Background technology]

[0002] Currently, outdoor activities are becoming more and more popular, and camping equipment is also becoming more and more popular. Outdoor chairs are popular and preferred as everyday items. Considering the convenience of carrying and the problem of volume, outdoor chairs need to be foldable and have a relatively simple structure. Since the chair is foldable, the service life and connection strength of the connecting parts at the folding position are particularly important. In addition, current folding chairs do not have a place to place both arms when in use, and the overall user experience of the user may be greatly reduced when sitting for a long time. In addition, the bottom surface of the support legs of current outdoor folding chairs is relatively smooth, which is likely to lead to a situation where the chair falls over when used by the user (because the chair falls over sideways), and there is a large potential safety risk, especially for the elderly and children. Therefore, the above problems are overcome by designing a portable folding chair. Summary of the Invention

[0003] SUMMARY OF THE PRESENT EMBODIMENT The object of the present invention is to overcome the drawbacks existing in the prior art and provide a portable folding chair which is simple in structure, low in cost, saves materials, convenient in installation and use, easy in disassembly, and easy in maintenance.

[0004] The present invention is realized by the following technical solution: a portable folding chair includes a support bar assembly at the bottom and a seat at the top, the support bar assembly includes four vertically arranged support bars and a folding bar arranged crosswise between the four vertically arranged support bars, the upper and lower parts are respectively assembled by assembly members, an anti-slip layer is attached to the bottom of the lower assembly member, and a seat layer is provided on the upper assembly member.

[0005] Preferably: the four vertical support bars are higher than the seat layer, the two front support bars are shorter than the two rear support bars, the rear support bars are provided with fabric connected to the seat layer as a backrest layer, a horizontally arranged connecting rod is attached between the front and rear support bars via a connecting member, and a fabric cover is provided to cover the connecting rod as an armrest.

[0006] Preferably, a connecting member is attached to each end of the horizontally arranged connecting rod, and the connecting member located on the front support rod is a fixed connecting member, with one end fixed to the end of the front support rod and the other end having a connecting bolt attached thereto, which passes through the connecting rod and allows the connecting rod to move up and down on the connecting bolt, and the connecting member attached to the other end of the connecting rod is provided with an inwardly recessed slot portion, which is engaged with and fixed to the rear support rod.

[0007] Preferably, a fixing bar protruding on both sides is provided on the rear support bar, and two openings, one on the left and one on the right, are provided in the slot portion facing downward, so that the fixing bar can be inserted to effect fixation.

[0008] Preferably, at least one position regulating rod is protruding from the rear support rod, the opening of the slot portion is a side opening, the rear support rod is inserted sideways and is installed above the position regulating rod.

[0009] Preferably: the connecting rod is further provided with a soft padded hand block with a fastener.

[0010] The present invention designs a portable folding chair which has many advantages, such as simple structure, low cost, saving material, convenient installation and use, and easy and convenient disassembly. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a structural schematic diagram of the present invention. [Diagram 2] FIG. 2 is another structural schematic diagram of the present invention. [Figure 3A] FIG. 3A is a front, top, right side perspective view of a chair according to a second embodiment of the present invention. [Figure 3B] FIG. 3B is a rear, top, right side perspective view of the chair. [Figure 4A] FIG. 4A is a partial enlarged view of the rear of the chair. [Figure 4B] FIG. 4B is a partial enlarged view of the rear support bar of the chair. [Figure 5A] FIG. 5A is a partial enlarged view of the armrest and second connecting member of the chair, showing the lever in the open position. [Figure 5B] FIG. 5B is a partial enlarged view of the armrest and second connecting member of the chair, showing the lever in the closed position. [Figure 6A] FIG. 6A is a partial enlarged view of the rear support bar, armrest and second connecting member of the chair, showing the lever in the open position. [Figure 6B] FIG. 6B is a partial enlarged view of the rear support bar, armrest and second connecting member of the chair, showing the state when the lever is in the closed position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] In order to make the objectives, technical solutions and advantages of the present invention more clearly understandable to those skilled in the art, the present invention is described in more detail as follows with reference to the drawings and examples.

[0013] In describing the present invention, it should be understood that the orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", "portrait", etc. are based on the orientations or positional relationships shown in the drawings and are merely for ease of describing the present invention, and do not indicate or imply that the devices or parts they refer to must have a particular orientation, and should not be understood as limitations on the present invention. EXAMPLES

[0014] The present invention will be described in detail below with reference to the drawings: As shown in FIG. 1, a portable folding chair C1 has a support bar assembly 1 at the bottom and a seat 2 at the top, the support bar assembly 1 has four support bars 3 arranged vertically and folding bars 4 arranged crosswise between the four vertical support bars 3, the upper and lower parts are respectively assembled by assembly members 5, an anti-slip layer 6 is attached to the bottom of the lower assembly member, and a seat layer 7 is provided on the upper assembly member.

[0015] The support bar assembly of the present invention is composed of four vertically arranged support bars and folding bars arranged crosswise between the four vertically arranged support bars, which allows easy folding while ensuring the stability and overall strength of the chair. Furthermore, all of the assembly members of the folding chair of the present invention are standardized parts, which are convenient to install and remove, and also convenient for maintenance and replacement. An anti-slip layer is attached to the bottom of the lower assembly member, which can properly protect the elderly and children from falling over due to the chair tipping over when using it, greatly improving the overall safety.

[0016] The four vertical support bars are higher than the seat layer 7, and the two front support bars 3 are shorter than the two rear support bars. The rear support bars are provided with fabric that is connected to the lower seat layer 7 as a backrest layer 8, and a horizontally arranged connecting rod 10 is attached between the front and rear support bars via a connecting member 9, and a fabric cover is provided to cover the connecting rod 10 as an armrest 11.

[0017] The folding chair of the present invention is provided with armrests, which neatly solves the problem with current folding chairs that there is no place to place both arms when in use, which may significantly reduce the overall user experience when sitting on them for long periods of time, and greatly improves the overall practicality and comfort.

[0018] A connecting member is attached to each end of the horizontally arranged connecting rod 10, and the connecting member 9 located on the front support rod is a fixed connecting member 12, one end of which is fixed to the end of the front support rod and the other end of which is attached to a connecting bolt 13. The connecting bolt 13 passes through the connecting rod and allows the connecting rod to move up and down on the connecting bolt. The other end of the connecting rod is provided with an inwardly recessed slot portion 14, which is engaged with and fixed to the rear support rod.

[0019] The connecting member of the present invention has one end fixed to the end of the front support rod to ensure its stability, and the other end is fitted with a connecting bolt which passes through the connecting rod and allows the connecting rod to move up and down on the bolt. This makes it easy to adjust the height of the armrest, allowing it to be used by people of various heights and improving overall practicality.

[0020] A fixing rod 15 with protruding sides is provided on the rear support rod, and two openings (hereinafter also referred to as "downward openings") are provided downward on the left and right sides of the slot portion 14 on the connecting rod, so that the fixing rod 15 can be engaged and fixed.

[0021] As shown in FIG. 2, at least one position regulating rod 16 is protruding from the rear support rod, and the opening of the slot portion 14 on the connecting rod is a side opening, into which the rear support rod is inserted sideways and is installed above the position regulating rod 16.

[0022] The above are the two relatively preferred structures of connecting members of the present invention. The connecting rod with an opening facing downward or opening to the side greatly facilitates the adjustment and installation of the armrest (connecting rod), and the installation of the fixed rod or position-control rod also properly ensures stability after installation and adjustment, thereby improving the overall practicality and comfort.

[0023] The connecting rod 10 is further provided with a soft-padded hand block 17 with a fastener (not shown). The present invention further improves the comfort of the user's hands by providing the connecting rod (armrest) with a soft-padded hand block with a fastener, and greatly enhances the user's usage experience. The soft-padded hand block is a sponge layer or latex pad with a leather-like outer cover. EXAMPLES

[0024] Hereinafter, a portable folding chair C2 according to a second embodiment of the present invention and a plurality of other embodiments including a design modification thereof will be described with reference to Figs. 3A to 6B. Figs. 3A to 6B show the portable folding chair C2 of the second embodiment. Figs. 3A and 3B show the Z-Z' direction, the Y-Y' direction, and the X-X' direction. The Y-Y' direction is the front-rear direction (first direction) of the portable folding chair C2, and includes the Y direction, which is the front direction, and the Y' direction, which is the rear direction. The Z-Z' direction is the height direction (vertical direction (second direction)) of the portable folding chair C2 that is substantially perpendicular to the Y-Y' direction, and includes the Z direction, which is the upward direction, and the Z' direction, which is the downward direction. The X-X' direction (third direction) is substantially perpendicular to the Z-Z' direction and the Y-Y' direction, and includes the X direction and the X' direction.

[0025] The portable folding chair C2 includes a support bar assembly 100 (hereinafter, also simply referred to as the "assembly 100") and a seat layer 200. The assembly 100 only needs to be configured to support the seat layer 200.

[0026] The assembly 100 includes two first support rods 110a and two second support rods 110b. The two first support rods 110a may each extend in the Z-Z' direction. The two second support rods 110b are located on the Y'-direction side of the two first support rods 110a. The two second support rods 110b may each extend in the Z-Z' direction, or may extend at an angle including components in the Z direction and the Y' direction.

[0027] The assembly 100 may further include any one of the following configurations (1) to (5), but is not limited thereto.

[0028] (1) The assembly 100 further includes four cross legs 120, four upper assembly members 130a, and four lower assembly members 130b (see FIGS. 3A and 3B). Each cross leg 120 includes first and second folding bars 121 crossed in an X-shape and an axle that rotatably connects the crossing portions of the first and second folding bars 121, and the first and second folding bars 121 can be opened and closed (folded) around the axle. When the first and second folding bars 121 are open, each cross leg 120 is X-shaped (unfolded state), and when the first and second folding bars 121 are closed, each cross leg 120 is approximately I-shaped (folded state). The four cross legs 120 are arranged in a rectangular ring shape, and include a cross leg 120 on the Y direction side, a cross leg 120 on the Y' direction side, a cross leg 120 on the X direction side, and a cross leg 120 on the X' direction side.

[0029] The four upper assembly members 130a include two upper assembly members 130a on the Y direction side and two upper assembly members 130a on the Y' direction side. The four lower assembly members 130b include two lower assembly members 130b on the Y direction side and two lower assembly members 130b on the Y' direction side. One of the two upper assembly members 130a on the Y direction side rotatably connects an upper end of the first folding bar 121 of the cross leg 120 on the Y direction side to an upper end of the first folding bar 121 of the cross leg 120 on the X direction side, and the other rotatably connects an upper end of the second folding bar 121 of the cross leg 120 on the Y direction side to an upper end of the first folding bar 121 of the cross leg 120 on the X' direction side. One of the two upper assembly members 130a on the Y'-direction side rotatably connects the upper end of the first folding bar 121 of the cross leg 120 on the Y'-direction side to the upper end of the second folding bar 121 of the cross leg 120 on the X-direction side, and the other rotatably connects the upper end of the second folding bar 121 of the cross leg 120 on the Y'-direction side to the upper end of the second folding bar 121 of the cross leg 120 on the X'-direction side. One of the two lower assembly members 130b on the Y-direction side rotatably connects the lower end of the first folding bar 121 of the cross leg 120 on the Y-direction side to the lower end of the first folding bar 121 of the cross leg 120 on the X-direction side, and the other rotatably connects the lower end of the second folding bar 121 of the cross leg 120 on the Y-direction side to the lower end of the first folding bar 121 of the cross leg 120 on the X'-direction side. One of the two lower assembly members 130b on the Y' direction side rotatably connects the lower end of the first folding bar 121 of the cross leg 120 on the Y' direction side to the lower end of the second folding bar 121 of the cross leg 120 on the X direction side, and the other rotatably connects the lower end of the second folding bar 121 of the cross leg 120 on the Y' direction side to the lower end of the second folding bar 121 of the cross leg 120 on the X' direction side. Note that it is optional whether or not the four lower assembly members 130b are provided with an anti-slip layer, and it does not have to be provided.

[0030] The two first support rods 110a may extend in a direction including a Z-direction component from the two lower assembly members 130b on the Y-direction side through the two upper assembly members 130a on the Y-direction side, and the two second support rods 110b may extend in a direction including a Z-direction component from the two lower assembly members 130b on the Y'-direction side through the two upper assembly members 130a on the Y'-direction side. The dimension in the Z-Z' direction of each of the two second support rods 110b may be larger than the dimension in the Z-Z' direction of each of the two first support rods 110a, but may be approximately the same as or smaller than that.

[0031] (2) Assembly 100 has the same configuration as assembly 100 in (1) above, except for the following differences (not shown): Two first support rods 110a may extend in a direction including a Z-direction component from two upper assembly members 130a on the Y-direction side, and two second support rods 110b may extend in a direction including a Z-direction component from two upper assembly members 130a on the Y'-direction side.

[0032] (3) Assembly 100 has the same configuration as assembly 100 in (1) above, except for the following differences (not shown): One of the two upper assembly members 130a on the Y'-direction side is fixed to a middle portion of the second folding bar 121 of cross leg 120 on the X-direction side and rotatably supports the upper end of the first folding bar 121 of cross leg 120 on the Y'-direction side, and the other is fixed to a middle portion of the second folding bar 121 of cross leg 120 on the X'-direction side and rotatably supports the upper end of the second folding bar 121 of cross leg 120 on the Y'-direction side. The second folding bar 121 of cross leg 120 on the X-direction side has one of the two second support bars 110b, and the second folding bar 121 of cross leg 120 on the X'-direction side has the other. Specifically, one of the second support rods 110b forms a portion on the Z-direction side of the middle portion of the second folding rod 121 of the cross leg 120 on the X-direction side (the upper assembly member 130a on the Y'-direction side), and the other second support rod 110b forms a portion on the Z-direction side of the middle portion of the second folding rod 121 of the cross leg 120 on the X'-direction side (the upper assembly member 130a on the Y'-direction side).

[0033] The assembly 100 of (1), (2) or (3) above may further include first and second support members. The first support member may be rotatably connected to one of the two upper assembly members 130a on the X-direction side among the four upper assembly members 130a (one of the two upper assembly members 130a on the Y-direction side and one of the two upper assembly members 130a on the Y'-direction side) and detachably connected to the other, or may be rotatably connected to one of the upper end of the second folding bar 121 of the cross leg 120 on the X-direction side and the upper end of the first folding bar 121 and detachably connected to the other (the other of the two upper assembly members 130a on the Y-direction side and the other of the two upper assembly members 130a on the Y'-direction side). The second support member can be configured so that it is rotatably connected to one of the two upper assembly members 130a on the X' direction side among the four upper assembly members 130a, and is detachably connected to the other, or it can be configured so that it is rotatably connected to one of the upper ends of the second folding bar 121 of the cross leg 120 on the X' direction side and the upper ends of the first folding bar 121, and is detachably connected to the other.

[0034] (4) The assembly 100 has a first connecting member on the Y direction side, a second connecting member on the Y' direction side, and a rectangular ring-shaped support frame (not shown). The first connecting member connects the two first support rods 110a to each other. The second connecting member connects the two second support rods 110b to each other. The support frame is located in the Z direction relative to the first connecting member and the second connecting member. The middle parts of the two first support rods 110a are rotatably connected to the Y direction side part of the end of the X direction side of the support frame and the Y direction side part of the end of the X' direction side. The middle parts of the two second support rods 110b are rotatably connected to the Y' direction side part of the end of the X direction side of the support frame and the Y' direction side part of the end of the X' direction side. The Z-Z' direction dimensions of the two second support rods 110b may be larger than the Z-Z' direction dimensions of the two first support rods 110a, but may be approximately the same as or smaller than them.

[0035] (5) Assembly 100 has the same configuration as above-mentioned (4) Assembly 100, except for the following differences (not shown). The two second support rods 110b have a lower rod portion in the Z' direction and an upper rod portion in the Z direction. The second connecting member connects the lower rod portions of the two second support rods 110b, and the upper ends of the lower rod portions of the two second support rods 110b are rotatably connected to the Y'-direction portion of the end portion on the X-direction side of the support frame and the Y'-direction portion of the end portion on the X'-direction side. The upper rod portions of the two second support rods 110b are rotatably connected to the upper ends of the lower rod portions of the two second support rods 110b or the Y'-direction portion of the end portion on the X-direction side of the support frame and the Y'-direction portion of the end portion on the X'-direction side.

[0036] In any of the above cases (1) to (5), the second support rod 110b can be configured to have a support rod main body and a support portion 111b. The support rod main body of the second support rod 110b has any of the above-mentioned configurations of the second support rod 110b. The support portion 111b of the second support rod 110b is provided on the support rod main body of the second support rod 110b. For example, the support portion 111b may be a protrusion having a substantially annular shape (such as a circular ring (see FIGS. 4A, 4B, 6A and 6B), a polygonal ring (not shown), a substantially C-shape (not shown) or an arc shape (not shown)) fitted onto or integral with the support rod body, or a rod penetrating the support rod body in the Y-Y' direction and protruding from the support rod body in the Y and Y' directions (not shown), or a rod (the above-mentioned fixed rod 15 or position regulating rod 16) penetrating the support rod body in the X-X' direction and protruding from the support rod body in the X and X' directions (see FIGS. 1 and 2), or a configuration having one or more protruding portions protruding from the support rod body in the radial direction (not shown).

[0037] The seat layer 200 is a flexible sheet having a substantially rectangular shape when viewed from the Z direction (in a plan view), and may be made of one or more layers of fabric made of polyester, nylon, cotton, polycotton, etc. (see Figs. 3A to 3B), or may be configured by connecting a plurality of parts made of the one or more layers of fabric (not shown). The fabric may be subjected to a breathable water repellent treatment using a fluorine-based or silicone-based water repellent agent, an impermeable waterproof treatment using a polyurethane-based waterproof agent, a PVC coating, a PU coating, a durashield coating, a silicone coating, a UV cut coating, a fireproof coating, or the like, or may not be subjected to such treatment or coating. The seat layer 200 has four sides and four corners. The four sides include a side on the Y direction side, a side on the Y' direction side, a side on the X direction side, and a side on the X' direction side.

[0038] The seat layer 200 may have four corners fixed to the four upper assembly members 130a of the assembly 100 of (1), (2), or (3) above, and may be supported by the assembly 100 in an unfolded state (see Figs. 3A to 3B, and also see Figs. 1 and 2). Alternatively, the seat layer 200 may have a side portion on the X-direction side and a side portion on the X'-direction side fixed to a portion extending in the Y-direction that is a portion in the Z-direction from the intersection of the first folding bar 121 of the cross leg 120 on the X-direction side of the assembly 100 of (1), (2), or (3) above, and is supported by the assembly 100 in an unfolded state. Alternatively, the seat layer 200 may have its X-direction side and X'-direction side fixed to the first and second support members of the assembly 100 of (1), (2) or (3) above and supported by the assembly 100 in the unfolded state. Alternatively, the seat layer 200 may have one of its four sides fixed to the support frame of the assembly 100 of (4) or (5) above and supported by the assembly 100 in the unfolded state.

[0039] The portable folding chair C2 may further include a backrest layer 300.

[0040] The backrest layer 300 is a flexible sheet that is separate from the seat layer 200 and has a roughly upside-down convex shape when viewed from the Y-direction side (see Figures 3A to 3B, also see Figures 1 and 2) or a roughly rectangular shape (not shown), and may be made up of one or more layers of fabric as described above, or may be configured by connecting multiple parts made of one or more layers of fabric as described above.

[0041] When the backrest layer 300 has the above-mentioned upside-down generally convex shape, the backrest layer 300 has an upper portion 310 and a lower portion 320 having a dimension in the XX' direction smaller than the dimension of the upper portion 310 in the XX' direction.

[0042] The backrest layer 300 has an upper side in the Z direction, a lower side in the Z' direction, a first side in the X direction, and a second side in the X' direction. The first side and the second side are provided with insertion portions 311 that open downward. In Figs. 3A and 3B, the upper side of the upper part 310 is the upper side of the backrest layer 300, the lower side of the lower part 320 is the lower side of the backrest layer 300, the sides of the upper part 310 and the lower part 320 in the X direction are the first sides of the backrest layer 300, and the sides of the upper part 310 and the lower part 320 in the X' direction are the second sides of the backrest layer 300. The insertion portions 311 are provided on the first side and the second side of the upper part 310.

[0043] The two second support rods 110b of the assembly 100 are inserted into the insertion portions 311, whereby the backrest layer 300 is supported by the two second support rods 110b.

[0044] The lower side of the backrest layer 300 may be connected to the seat layer 200 (see Figs. 3A and 3B), but it does not have to be connected (not shown). Alternatively, the backrest layer 300 and the seat layer 200 may be configured as a single sheet (not shown). The backrest layer 300 can be omitted.

[0045] The portable folding chair C2 further includes two armrests 400, a first connecting member 500, and a second connecting member. The two armrests 400 are suspended by two first support rods 110a and two second support rods 110b. The armrest structure consisting of the two armrests 400, the two first support rods 110a, and the two second support rods 110b will be described in detail below.

[0046] The armrest 400 has an armrest body 410 .

[0047] The armrest body 410 has a rod extending in the Y-Y' direction and / or a plate extending in the Y-Y' direction. In Figs. 3A to 6B, the armrest body 410 has a plate extending in the Y-Y' direction fixed on a rod extending in the Y-Y' direction. The armrest body 410 has a first end on the Y direction side and a second end on the Y' direction side. In either case, the first end of the armrest body 410 is the end of the rod or plate on the Y direction side. The second end of the armrest body 410 is the end of the rod or plate on the Y' direction side. The armrest body 410 may further have at least one of a top plate, a drink holder, and a soft pad hand block fixed to the rod or plate.

[0048] The first connecting member 500, the second connecting member, the armrest 400 and the first support rod 110a have any one of the following configurations (a) to (c).

[0049] (a) The first connecting member 500 connects the armrest body 410 to the first support rod 110a in a freely rotatable manner (not shown). (a1) The first connecting member 500 has a fixed part and a cap 510. The fixed part is the end of the first connecting member 500 on the Y' direction side, and is fixed to the first end of the armrest body 410. The cap 510 is a tube extending in the Z-Z' direction, and the Z direction side is closed. The cap 510 is fitted rotatably around the upper end of the first support rod 110a, so that the first connecting member 500 and the armrest body 410 are freely rotatable around the upper end of the first support rod 110a. Or, (a2) The first connecting member 500 has a pivot part (not shown) instead of the cap 510. The pivot part extends in the Z-Z' direction. The upper end of the first support rod 110a is provided with an axial hole (not shown) that extends in the Z-Z' direction and opens in the Z direction. The pivot shaft is rotatably fitted into the pivot hole, so that the first connecting member 500 and the armrest main body 410 can freely rotate around the pivot shaft. Or (a3) ​​the first connecting member 500 has another fixed part (not shown) and another pivot shaft (not shown). The other fixed part is the end of the first connecting member 500 on the Y direction side and is fixed to the upper end of the first support rod 110a. The other pivot shaft is provided at the end of the first connecting member 500 on the Y' direction side and extends in the Z-Z' direction. The armrest main body 410 is provided with another axial hole (not shown) that extends in the Z-Z' direction and opens in at least one of the Z direction and the Z' direction. Another pivot shaft portion is pivotably fitted into another shaft hole, so that the armrest body 410 is freely pivotable about the other pivot shaft portion.

[0050] (b) The first connecting member 500 connects the armrest body 410 to the first support rod 110a so as to be rotatable in the Z-Z' direction (not shown). The first connecting member 500 has a fixed portion and a rotating shaft portion 520. The fixed portion is the end of the first connecting member 500 on the Y direction side and is fixed to the first support rod 110a. The rotating shaft portion 520 extends in the X-X' direction. Either the end of the first connecting member 500 on the Y' direction side or the first end of the armrest body 410 is substantially concave-shaped when viewed from the Z direction, and the other is convex-shaped when viewed from the Z direction to fit into the other, and an axis hole is provided through both in the X-X' direction. Alternatively, the end of the first connecting member 500 on the Y' direction side and the first end of the armrest body 410 abut against each other in the X-X' direction, and an axis hole is provided through both in the X-X' direction. The pivot shaft 520 is rotatably fitted into the shaft hole, so that the armrest body 410 is freely rotatable about the pivot shaft 520.

[0051] (c) The first connecting member 500 connects the armrest body 410 to the first support rod 110a in a rotatable and pivotable manner (see Figs. 3A and 3B, and also Figs. 1 and 2). The first connecting member 500 (see also the fixed connecting member 12) has the cap 510 or pivot shaft and the pivot shaft 520 (see also the connecting bolt 13). The cap 510 of the first connecting member 500 is pivotally fitted onto the upper end of the first support rod 110a or the pivot shaft of the first connecting member 500 is pivotally fitted into the pivot hole at the upper end of the first support rod 110a, thereby making the first connecting member 500 and the armrest body 410 pivotable. The end of the first connecting member 500 on the Y' direction side and the first end of the armrest body 410 are provided with pivot holes as described above in (b). The pivot shaft 520 is rotatably fitted into the shaft hole, so that the armrest body 410 is freely rotatable about the pivot shaft 520.

[0052] The second connecting member has a hook 600 (the above-mentioned slot portion) provided at the second end of the armrest main body 410. The hook 600 is configured to be detachably fitted onto the second support rod 110b and supported by the support portion 111b by rotating or pivoting together with the armrest main body 410. For example, when the hook 600 rotates together with the armrest main body 410 as in (a) or (c) above, it may further have the following configuration (d), and when the hook 600 rotates together with the armrest main body 410 as in (b) or (c) above, it may further have the following configuration (e), but is not limited to these configurations.

[0053] (d) The hook 600 is recessed inward (X-direction side or X'-direction side) and has an opening 610 that opens in the X'-direction (sideways) or X-direction (sideways) (see Figs. 4A to 6B, and also see Fig. 2). When the armrest body 410 and the hook 600 rotate, the second support bar 110b fits detachably into the opening 610 of the hook 600 from the X-direction side or the X'-direction side.

[0054] The hook 600 may further have a recess 620 (see Figs. 4A to 6B). When the opening 610 opens in the X direction, the recess 620 is provided on the inner circumferential surface of the opening 610, is a horizontally oriented, approximately U-shaped recess that opens in the X direction, and is connected to the opening 610. When the opening 610 opens in the X' direction, the recess 620 is provided on the inner circumferential surface of the opening 610, is a horizontally oriented, approximately U-shaped recess that opens in the X' direction, and is connected to the opening 610. The support rod body of the second support rod 110b fits into the opening 610 of the hook 600 so as to be freely insertable and detachable from the X direction side or the X' direction side, and the support portion 111b of the second support rod 110b fits into the recess 620 so as to be freely insertable and detachable from the X direction side or the X' direction side (see Figs. 6A to 6B).

[0055] The support portion 111b of the second support rod 110b may have a first protrusion 111b1 and a second protrusion 111b2. When the support portion 111b is the above-mentioned substantially annular protrusion (see FIG. 4B), the first protrusion 111b1 is a portion of the substantially annular protrusion that is protruding toward the recess 620 side, and the second protrusion 111b2 is a portion of the substantially annular protrusion that is protruding toward the opening side of the opening 610. When the support portion 111b is a rod that penetrates the support rod main body in the X-X' direction as described above, the first protrusion 111b1 is a portion of the rod that protrudes from the support rod main body toward the recess 620 side, and the second protrusion 111b2 is a portion of the rod that protrudes from the support rod main body toward the opening side of the opening 610. When the support portion 111b has a plurality of protrusions, the first protrusion 111b1 is a protrusion among the plurality of protrusions that protrudes toward the recess 620 side, and the second protrusion 111b2 is a protrusion among the plurality of protrusions that protrudes toward the opening side of the opening 610. In either case, the support rod body of the second support rod 110b fits removably into the opening 610 of the hook 600, the first protrusion 111b1 of the support portion 111b of the second support rod 110b fits removably into the recess 620, and the second protrusion 111b2 of the support portion 111b of the second support rod 110b is exposed from the opening 610.

[0056] The hook 600 may further include a lever 630. When the opening 610 opens in the X' direction, the lever 630 is provided on the Y-direction side of the end face of the hook 600 on the X' direction side relative to the opening 610 of the hook 600 so as to be movable in the Y-Y' direction to at least partially (partially or completely) close and open the opening 610. When the opening 610 opens in the X direction, the lever 630 is provided on the Y-direction side of the end face of the hook 600 on the X direction side relative to the opening 610 of the hook 600 so as to be movable in the Y-Y' direction to at least partially (partially or completely) close and open the opening 610. The lever 630 has a tip on the Y' direction side. The tip of the lever 630 is provided with an engagement recess 630a (see Figs. 5A to 6B) or an engagement protrusion (not shown). The engagement recess 630a is recessed in the Y direction (retraction direction) and opens in the Y' direction (advance direction). The engaging protrusion protrudes in the Y' direction (leading direction).

[0057] In a state where the second support rod 110b fits into the opening 610, the first protrusion 111b1 of the support portion 111b fits into the recess 620, and the second protrusion 111b2 of the support portion 111b is exposed from the opening 610, the lever 630 moves in the Y direction to at least partially close the opening 610, so that the second protrusion of the support portion 111b fits into the engagement recess 630a of the lever 630 or the engagement protrusion of the lever 630 fits into the engagement hole (not shown) of the second protrusion of the support portion 111b. In this way, the state in which the hook 600 is attached to the second support rod 110b is locked. By moving the lever 630 in the Y direction to open the opening 610, the support portion 111b comes out of the engagement recess 630a or the engagement protrusion of the lever 630 comes out of the engagement hole of the support portion 111b. In this way, the above-mentioned lock is released.

[0058] The hook 600 may further have a guide portion 640. The guide portion 640 is a groove or a pair of rails provided in a portion of the end face of the hook 600 on the X' direction side that is on the Y direction side of the opening 610 of the hook 600 or in a portion of the end face of the hook 600 on the X direction side that is on the Y direction side of the opening 610 of the hook 600, and extends in the Y-Y' direction. The guide portion 640 guides the lever 630 movably in the Y-Y' direction.

[0059] The recess 620 can be omitted. In this case, the lever 630 and the guide portion 640 are also omitted, and the second support rod 110b is inserted and detached into the opening 610 of the hook 600, and the support portion 111b abuts against the hook 600 from the Z' direction side (see FIG. 2). In this way, the hook 600 is arranged to be supported on the support portion 111b. In this case, the support portion 111b may be any one that abuts against the hook 600 from the Z' direction side, and may have any of the above-mentioned configurations. When the recess 620 is provided, the lever 630 may be provided but the guide portion 640 may not be provided, or neither the lever 630 nor the guide portion 640 may be provided.

[0060] (e) The hook 600 has a tip end on the Y' side that is generally U-shaped when viewed from the Z side (a generally U-shaped tip that is recessed inward (Y side)), and has an opening 610 (opening) that opens in the Y' direction and also opens in the Z-Z' direction, a first side wall on the X side of the opening 610, and a second side wall on the X' side of the opening 610 (see FIG. 1). When the armrest body 410 and the hook 600 rotate in the Z-Z' direction, the second support rod 110b fits detachably into the opening 610 of the hook 600 from the Z side. The first and second side walls of the hook 600 are provided with downward openings that communicate with the opening 610 and open in the Z' direction (open downward).

[0061] The support portion 111b of the second support rod 110b may have a first convex portion and a second convex portion. When the support portion 111b is a rod penetrating the support rod main body in the X-X' direction as described above (when the support portion 111b is the above-mentioned fixed rod 15), the first convex portion is a portion of the rod that protrudes from the support rod main body to the X-direction side, and the second convex portion is a portion of the rod that protrudes from the support rod main body to the X'-direction side. When the support portion 111b has multiple convex portions, the first convex portion is a convex portion of the multiple convex portions that protrudes toward the X-direction side, and the second convex portion is a convex portion of the multiple convex portions that protrudes toward the X'-direction side. In either case, the support rod main body of the second support rod 110b fits removably into the opening 610 of the hook 600, and the first and second convex portions of the support portion 111b of the second support rod 110b fit removably into the downward openings of the first and second side walls of the hook 600 from the Z'-direction side. In this manner, the hook 600 is supported by the support portion 111b.

[0062] The downward opening of the hook 600 can be omitted. In this case, the second support rod 110b fits removably into the opening 610 of the hook 600, and the support portion 111b abuts against the hook 600 from the Z' direction side. In this manner, the hook 600 is arranged to be suspended on the support portion 111b. The support portion 111b may be any that abuts against the hook 600 from the Z' direction side, and may have, for example, any of the configurations described above.

[0063] In the above-described portable folding chair C2, the armrest 400 can be easily attached to and detached from the second support rod 110b. The armrest 400 can be easily attached to and detached from the second support rod 110b. In addition, when the armrest 400 is supported by the support portion 111b while attached to the second support rod 110b, the attachment state of the armrest 400 is stable. As a result, the portable folding chair C2 can be easily set up and disassembled, and the practicality and comfort of the portable folding chair C2 can be improved.

[0064] The above-mentioned assembly may have a first support rod and a second support rod that can support the seat layer or the seat and are spaced apart in the front-rear direction. When the above-mentioned backrest layer is provided, the backrest layer may be supported by the first support rod or the second support rod.

[0065] The specific embodiments described in this specification are merely illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Anyone familiar with this technology may modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person with ordinary knowledge in the art to which the present invention pertains without departing from the spirit and technical ideas shown by the present invention should still be included in the claims of the present invention.

Claims

1. A portable folding chair having a lower support bar assembly and an upper seat portion, The support rod assembly includes four support rods arranged vertically; and a cross-positioned folding bar disposed between the four vertical support bars, This portable folding chair is characterized in that an upper part and a lower part are assembled by assembly members, a non-slip layer is attached to the lower part of the lower assembly member, and a seat layer is provided on the upper assembly member.

2. 2. The portable folding chair according to claim 1, A portable folding chair characterized in that the four vertical support rods are higher than the seat layer, the two front support rods being shorter than the two rear support rods, a fabric connected to the seat layer is provided on the rear support rods as a backrest layer, a connecting rod arranged horizontally is attached between the front support rods and the rear support rods via a connecting member, and a fabric cover is provided to cover the connecting rods as an armrest.

3. 3. The portable folding chair according to claim 2, a connecting member is attached to each end of the connecting rod arranged horizontally, the connecting member located on the front support rod is a fixed connecting member, one end of which is fixed to the end of the front support rod and the other end of which has a connecting bolt attached thereto, the connecting bolt passing through the connecting rod and allowing the connecting rod to move up and down on the connecting bolt, and the connecting member attached to the other end of the connecting rod has an inwardly recessed slot portion which is engaged with and fixed to the rear support rod,

4. 4. The portable folding chair according to claim 3, A portable folding chair characterized in that a fixing bar protruding on both sides is provided on the rear support bar, and two openings, one on the left and one on the right, are provided downward in the slot portion, so that the fixing bar can be inserted to fix the chair.

5. 4. The portable folding chair according to claim 3, A portable folding chair characterized in that at least one position regulating bar is protruding from the rear support bar, the opening of the slot portion is a side opening, the rear support bar is inserted sideways, and is installed above the position regulating bar.

6. A portable folding chair according to claim 3, 4 or 5, The portable folding chair further comprises a soft pad hand block with a fastener on the connecting rod.

7. A first support rod and a second support rod arranged at an interval in the front-rear direction; Armrests and A first connecting member; and a second connecting member, The second support rod includes a support rod body and The support rod has a support portion provided on the support rod body, The armrest includes an armrest body having a first end and a second end; The first connecting member connects at least the first end of the armrest body to the first support rod so as to be rotatable and / or pivotable, The second connecting member has a hook provided at the second end of the armrest body, and the hook is removably fitted onto the second support rod and supported by the support portion, forming a portable folding chair.

8. 8. The portable folding chair according to claim 7, The first connecting member pivotally connects at least the first end of the armrest body to the first support rod, The hook has an opening that opens laterally and a recess provided on an inner peripheral surface of the opening, A portable folding chair in which the support rod body of the second support rod is removably fitted into the opening of the hook, and the support portion of the second support rod is removably fitted into the recess of the hook.

9. 9. The portable folding chair according to claim 8, The armrest further includes a lever provided on the hook so as to be movable forward and backward to at least partially close and open the opening, the lever has a tip end portion in a forward direction of the lever, the tip end portion having an engagement recess portion that opens in the forward direction or an engagement protrusion portion that protrudes in the forward direction, A portable folding chair in which, when the support rod body of the second support rod is removably fitted into the opening of the hook and the support portion of the second support rod is removably fitted into the recess of the hook, the lever moves in the forward direction to at least partially block the opening, so that the support portion of the second support rod fits into the engagement recess of the lever or the engagement protrusion of the lever fits into the engagement hole of the support portion of the second support rod, and the lever moves in the retraction direction of the lever to open the opening, so that the support portion of the second support rod comes out of the engagement recess of the lever or the engagement protrusion of the lever comes out of the engagement hole of the support portion of the second support rod.

10. 8. The portable folding chair according to claim 7, The first connecting member rotatably connects at least the first end of the armrest body to the first support rod, The support portion of the second support rod penetrates the support rod body and protrudes on both sides from the support rod body, The hook has an opening that opens to the second support rod side, a first sidewall and a second sidewall of the opening; The first and second side walls are provided with downward openings that communicate with the opening and open downward, A portable folding chair in which the support rod body of the second support rod is removably fitted into the opening of the hook, and the support portion of the second support rod is removably fitted into the downward opening of the hook.

11. 8. The portable folding chair according to claim 7, A portable folding chair in which the support portion abuts against the hook from below with the hook fitted onto the second support bar.

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