JPH10133A - Folding chair of suspended seat type - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding chair of suspended seat type, which can be fabricated at a low cost and be collapsed compactly and which permits the user to seat himself on it in stable attitude so that he will not have any sense of fatigue in the course of long time use. SOLUTION: A front supporting rod 3 capable of relative rotation round the first vertical shafts 33, 34 is laid as set over the bottoms of the front legs 12, 22 of a left and a right gate-shaped member 1 and 2. In the rear of the left gate-shaped member 1, one end of a seat back 4 is installed rotatably round the second vertical shaft 14. A mounting part 42 is furnished at the other end of the seat back 4, and a fixture 6 capable of being removably attached to the mounting part 42 is fixed to the rear of the right gate-shaped member 2. The members 1 and 2 are fitted with rods 11 and 21, and between them a flexible seat 5 is set over in the dangling condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding seat type folding chair having a hanging type seat and being foldable.

[0002]

2. Description of the Related Art Conventionally, there has been a suspension seat type chair in which a flexible seat is stretched in a tensioned state between rods long in the front-rear direction provided on a pair of left and right gate members.
In addition, there have been folding chairs in which a seating portion, a leg portion, a backrest portion, an armrest portion, and the like of the chair can be folded.

[0003]

However, the above-mentioned conventional hanging seat type chair is not suitable for prolonged use because the sitting posture is difficult to stabilize. In addition, the conventional folding chair is inconvenient to carry in a folded state.

The present invention has been made under the above circumstances, and has a simple structure and can be manufactured at a low cost, while maintaining a stable posture of a user and prolonging fatigue even when used for a long time. It is an object of the present invention to provide a hanging seat type folding chair which is less likely to give a feeling and which can be folded compactly enough to be carried in a bag.

Further, according to the present invention, the height of the seat can be adjusted according to the size of the user's body, and the user can sit down by adjusting the height of the seat. It is another object of the present invention to provide a hanging seat-type folding chair in which the center of gravity of the user's body is stabilized and the load applied to the user's feet is reduced even when used in any method. .

[0006]

According to a first aspect of the present invention, there is provided a folding seat type folding chair, wherein a front and rear ends of the front and rear ends of the front and rear ends of the front and rear ends of the front and rear ends are integrally formed. And a pair of left and right portal members having a pair of left and right legs, and a pair of left and right portal members that are installed facing each other at a distance longer than the distance between the front leg and the rear leg. Between the lower ends of the pair of left and right front legs, a front support rod having both ends connected to the respective front legs so as to be relatively rotatable about a pair of left and right first longitudinal axes. At a rear portion of one of the gate members, a vertical position of the gate member along the rod portion and a horizontal extension from the gate member to a horizontal position extending between the pair of left and right gate members. One end of the backrest member is attached so as to be rotatable around the second vertical axis between the horizontal posture and the horizontal posture. At the other end of the backrest member, a mounting portion is provided, which can be attached to and detached from a mounting tool provided at the rear portion of the other gate-shaped member. In addition, a flexible seating sheet is suspended in a hanging state.

In this hanging seat type folding chair, a flexible seating seat is suspended between the respective rod portions of the pair of left and right gate members in a hanging state, so that the user can sit on the seat. When the user sits on the seat, the seating seat is deformed by the weight of the user along the portion from the hip to the waist. For this reason, the above-mentioned seating seat fits comfortably into the part from a user's buttocks to the waist, and the weight of the user is received by the seating seat in a wide area, and the posture of the user is stabilized, and the foot of the user is stabilized. The burden on the user is also reduced.

When folding the hanging seat type folding chair, the mounting portion of the backrest member is detached from the mounting fixture, and then the backrest member is rotated about a second vertical axis to form one of the gate-shaped members. A vertical position along the rod portion of the member, rotating one of the portal members about the first longitudinal axis with respect to the front support rod, and moving the other portal member to the other By rotating about the first longitudinal axis, one portal member and the other portal member overlap on both sides of the backrest member.

[0009] A hanging seat type folding chair according to a second aspect of the present invention is the folding chair according to the first aspect, wherein the seating seat is provided with a telescopic mechanism capable of adjusting the hanging width of the seating seat. That is.

According to the hanging seat type folding chair, the hanging width of the seat can be increased or decreased by the expansion and contraction mechanism. Therefore, the height of the seating seat can be adjusted according to the size of the user's body, and by adjusting the height of the seating seat, it becomes possible to sit or sit straight. In addition, since the seat is hung down, the same operation as that of the above-described claim 1 is exerted both when used in a sitting state and when used in a normal sitting state.

According to a third aspect of the present invention, there is provided the folding seat type folding chair according to the first or second aspect, wherein the attachment is suspended from an upper plate portion and a rear end of the upper plate portion. A rear plate portion provided, a lower plate portion projecting forward from a lower end portion of the rear plate portion, and a front end portion of the upper plate portion and a front end portion of the lower plate portion are formed between each other. An opening is formed by a U-shaped member having an open front, and a concentric pin insertion hole is formed in an upper plate portion and a lower plate portion of the U-shaped member. In the mounting portion of the backrest member that can be fitted and removed through the opening,
A pin insertion hole which is concentrically arranged with the pin insertion hole when fitted to the attachment is opened, and the pin insertion hole of the attachment and the pin insertion hole of the attachment portion fitted to the attachment. And an insertion pin which can be inserted and removed.

According to the hanging seat type folding chair, the insertion pin is inserted into the pin insertion hole of the mounting member made of the U-shaped member and the pin of the mounting portion of the backrest member fitted to the mounting member. By simply performing a simple operation of insertion into the insertion hole, the attachment and the attachment are connected.
Further, the connection between the mounting tool and the mounting portion is released only by pulling out the insertion pin inserted in such a manner, and folding becomes possible.

According to a fourth aspect of the present invention, there is provided the folding seat type folding chair according to the third aspect, wherein the insertion pin is connected to the pin insertion hole of the mounting tool and the mounting tool. When inserted into the pin insertion hole of the fitted mounting portion, by contacting the rear surface of the rear plate portion of the mounting tool in a range extending to both left and right sides of the insertion position of the insertion pin, A plate-like holding member for suppressing relative rotation between the mounting member around the insertion pin and the mounting portion of the backrest member is provided.

According to the hanging seat type folding chair, when the insertion pin is inserted as described above to connect the mounting tool and the mounting portion, the holding tool provided on the insertion pin is provided. And a relative rotation between the mounting tool and the mounting portion centering on the insertion pin by contacting the rear surface of the rear plate portion of the mounting tool in a range extending to the left and right sides of the insertion position of the insertion pin. Is suppressed, so that the use state is stable despite being foldable.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic perspective view showing an assembled state of a hanging seat type folding chair A showing an embodiment of the present invention, as viewed from above the front, and FIG. FIG. 3 is a perspective view showing an expansion and contraction mechanism of a seating seat 5, FIG. 4 is a partially cutaway front view of a mounting portion of a left gate member 1 and a backrest member 4, and FIG. FIG. 5 is a partially cutaway front view of an attachment portion between the left front leg portion 12 and the front support rod 3, and FIG. 6 is an attachment 6 provided on the right gate member 2 side and an attachment portion on the backrest member 4 side. FIG. 7 is a schematic perspective view showing the insertion pin 42 and the insertion pin 7 and the like. FIG. 7 is a partially cutaway front view when the attachment 6 and the attachment portion 42 are connected.

As shown in FIG. 1, this folding seat type folding chair A includes a pair of left and right portal members 1 and 2, a front support rod 3,
A backrest member 4 and a seat 5 are provided.

The left gate-shaped member 1 includes a rod portion 11 which is long in the front-rear direction, and a front leg portion 12 and a rear leg portion 13 which are integrally connected to a front end portion and a rear end portion of the rod portion 11, respectively. have. This gate-shaped member 1 is manufactured by bending a metal-made round pipe material of a predetermined length having an outer diameter of about 25 mm into a gate shape, and a boundary portion between the rod portion 11 and the front leg portion 12 and the rod portion 11. The boundary between the rear leg 13 and the rear leg 13 is curved. Also, the height dimension from the floor surface when the portal member 1 is raised on the floor to the top surface of the rod portion 11 is 30.
It is about 35 cm. Further, this portal member 1
The distance between the front leg portion 12 and the rear leg portion 13, that is, the depth dimension is about 35 to 45 cm. The right gate member 2 has the same shape and the same dimensions as those of the left gate member 1 described above. 21 is a rod, 22 is a front leg, and 23 is a rear leg. In addition, the left and right portal members 1,
2, the front legs 12, 22 and the rear legs 13, 23
May be configured to be extendable.

The front support rod 3 is made of a band-shaped metal plate. Both ends of the front support rod 3 are bent upward to form pressing pieces 31 and 32 having resiliency, and a short metal pipe material is provided immediately inside the pressing pieces 31 and 32. The support protrusions 33 and 34 are joined upward by welding. As shown in detail in FIG. 5, the lower end of the front leg 12 of the left gate-shaped member 1 is externally fitted to the left support projection 33 so as to be relatively rotatable. 1 is held in a vertically upright posture. On the other hand, the lower end of the front leg portion 22 of the right gate-shaped member 2 is externally fitted to the right support projection 34 so as to be relatively rotatable, and the gate-shaped member 2 is held in a vertically upright posture. Have been. Here, the left and right support projections 33 and 34 are traversed as described above across the lower ends of the pair of left and right front legs 12 and 22 provided on the left and right portal members 1 and 2. A first longitudinal axis for connecting the front support rod 3 thus formed to the pair of left and right front legs 12 and 22 so as to be relatively rotatable separately.

As shown in FIGS. 1 and 4, at the rear of the gate-shaped member 1 on the left side, and near the upper end of the leg 13 thereafter, the above-mentioned bolt 14 having a root 15 bent laterally is provided. The base 15 is joined by welding, and the bolt 1
4 constitutes a second vertical axis. A bolt insertion hole 41 formed at one end of the backrest member 4 formed by cutting a rectangular steel material (or a round pipe) into a predetermined length is fitted to the bolt 14 serving as the second vertical axis. Thus, one end of the backrest member 4 is rotatably attached to the bolt 14. Here, as can be seen in FIG. 4, since the bolt 14 is fixed to the rear leg 13 so as to protrude to the right of the rear leg 13, the backrest member 4 attached to the bolt 14 is fixed.
The vertical posture (see FIG. 10) of the gate member 1 on the left side around the bolt 14 along the rod portion 11 (see FIG. 10) and the horizontal posture extending laterally from the gate member 1 (see FIG. 8) Between them. A cap nut 16 is screwed into the bolt 14 so that the bolt insertion hole 4
The end of the bolt 14 projecting upward from 1 is concealed, and the cap nut 16 prevents one end of the backrest member 4 from coming off the bolt 14.

At the other end of the backrest member 4, a mounting portion 42 is provided.
Is provided. As shown in FIGS. 6 and 7, a pin insertion hole 43 is formed in the mounting portion 42. On the other hand, the attachment 6 is welded to the rear part of the gate-shaped member 2 on the right side and near the upper end of the leg 23 thereafter.
The attachment 6 includes an upper plate portion 61, a rear plate portion 62 suspended from a rear end of the upper plate portion 61, and a lower plate projecting forward from a lower end portion of the rear plate portion 62. And a front-opening U-shaped member having an opening 63 formed between the front end of the upper plate portion 61 and the front end of the lower plate portion 63. The upper plate portion 61 and the lower plate portion 63 are provided with concentric pin insertion holes 65. The mounting portion 42 of the backrest member 4 can be fitted to and removed from the mounting fixture 6 through the opening 64. Also, when the mounting portion 42 of the backrest member 4 is fitted to the mounting device 6, the pin insertion hole 65 of the mounting device 6 and the pin insertion hole 43 of the mounting portion 42 are concentrically arranged. Has become.

In FIGS. 6 and 7, reference numeral 7 denotes an insertion pin. The insertion pin 7 can be inserted into and removed from the pin insertion hole 65 of the attachment 6 and the pin insertion hole 43 of the attachment portion 42 fitted to the attachment 6. The insertion pin 7 is provided with a holding member 75. The holding member 75 includes a mounting plate portion 76 welded to the upper end of the insertion pin 7 by welding, and a pressing plate portion 78 suspended from a rear end of the mounting plate portion 76 via a bulge 77. And
When the insertion pin 7 is inserted into the pin insertion hole 65 of the attachment 6 and the pin insertion hole 43 of the attachment portion 42 fitted to the attachment 6 as shown in FIG. As shown by a broken line in the drawing, the pressing plate portion 78 elastically contacts the rear surface of the rear plate portion 62 of the mounting fixture 6 in the range extending to the left and right sides of the insertion position of the insertion pin 7, and the insertion is performed. The mounting fixture 6 is pressed by the pin 7 and the pressing plate portion 78. Therefore, the relative rotation between the attachment 6 and the attachment portion 42 of the backrest member 4 about the insertion pin 7 is suppressed by the presser 75.

When the mounting portion 42 is connected to the mounting fixture 6 via the insertion pin 7 while the backrest member 4 is in the above-described horizontal posture, the backrest member 4 is horizontally moved to a pair of left and right portal members 1. , 2 between the rear legs 13, 23. The pair of left and right portal members 1 and 2 attached to the front support rod 3 via the pair of left and right support protrusions 33 and 34 are parallel to each other, and furthermore, the front support rod 3 and the backrest member. 4 is provided in the front-rear direction at right angles. Further, a pair of left and right portal members 1 and 2 have front legs 12 and 22 and rear legs 13 and 2 respectively.
3 are installed facing each other at a distance longer than the distance between them.

As shown in FIG. 1, tubular cloth covers 18, 28 are mounted on the rods 11, 21 of the pair of left and right portal members 1, 2, respectively. The support rods 3 and the backrest member 4 are also provided with cloth covers 38,4.
8 is attached. The above-mentioned rod portions 11 and 21 can be used as armrests by placing the user's elbow,
Therefore, it is useful to attach the covers 18, 28 to the rods 11, 21. In addition, the backrest member 4 can be configured to have a backrest plate that rises upward.

As shown in FIGS. 1 and 2, the flexible seat 5 is suspended between the rods 11 and 21 of the pair of left and right portal members 1 and 2 in a hanging state. ing. The seat 5 is a rectangular seat cloth 51 that supports the buttocks of the user when sitting or sitting straight.
And a pair of front and rear cloth strips 52 arranged across both front and rear edges of the seating cloth 51, and a total of four clamps 53 attached to each of the left and right ends of these cloth strips 52. Have.

As shown in FIG.
Has a rectangular frame 54, a horizontal rail 55, and openings 56, 56 on both sides of the horizontal rail 55, and the cloth band 52 is straddled over the horizontal rail 55 as shown in FIG. Opening 5
6 and 56, the clamp 53 and the cloth band 52
When they are pulled in opposite directions, their relative positions are kept in a fixed position so that they do not slip, and after the cloth band 52 is pulled out from the openings 56 and 56 and slackened, the cloth band 52 is placed on one side. When the tension is drawn by pulling through the opening 56, the relative position between the cloth band 52 and the clamp 53 is changed. Therefore, as shown in FIG.
The cover 1 passes through a gap between the positioning cloth 19 of the cover 18 mounted on the rod portion 11 and the cover 18.
When the sheet is wound around and the two sheets are passed through the clamp 53 as shown in the figure, the seat 5 is suspended from the rod portion 11 on the left. Therefore, as shown in FIG.
A pair of front and rear cloth bands 5
When each of the two ends of each of the two seats 2 and 52 is hung using the four clamps 53 in total, as described above, the seating seat 5 is suspended and the pair of left and right gate members 1 and 2 is suspended.
Are suspended on the rod portions 11 and 21 of the first and second rods. The hanging width of the seat 5 at this time can be increased or decreased by adjusting the relative positions of the clamps 53 and the cloth band 52 passed through the clamps 53. Therefore, the clamp 53 constitutes a telescopic mechanism for increasing and decreasing the hanging width of the seat 5.

In the hanging seat type folding chair A described above, the flexible seating seat 5 is hung down so that each of the rod portions 1 of the pair of left and right gate members 1 and 2 is suspended.
2, the user M sits on the seat 5 as shown in FIG. 2, and the seat 5 is moved by weight of the user M to a portion from the hip to the waist. Deforms to follow. Therefore, the seat 5
Fits comfortably to the part from the hips to the waist of the user as shown in the figure, and the weight of the user M can be received by the seating seat 5 in a wide area. Further, the posture of the user M is stabilized, and the burden on the foot of the user M is reduced.

The hanging seat-type folding chair A is operated by operating the clamp 53 and the cloth band 52.
The hanging width of the seat 5 can be increased or decreased. Therefore, the height of the seat 5 can be adjusted according to the size of the body of the user M, and the height of the seat 5 can be adjusted so that the user can sit down and sit down. . In FIG. 2, the position of the left and right feet of the user M when sitting straight is indicated by a symbol L. As can be inferred from this, when sitting straight, the height of the seat 5 is lowered, and the user sits down on the seat 5, and the left and right legs L, L are inserted between the seat 5 and the floor. To do.

FIGS. 8 to 11 show an example of a procedure for folding the hanging seat type folding chair A. FIG. FIG. 8 is a plan view showing a state where the hanging seat type folding chair A is assembled. The folding of the hanging seat type folding chair A is performed by pulling out the insertion pin 7 from the state shown in FIG. 8 and detaching the mounting portion 42 of the backrest member 4 from the mounting fixture 6, and then removing the backrest member 4. While passing under the seat 5, the rod of the portal member 1 on the left side is rotated around the bolt 14 forming the second longitudinal axis as indicated by an arrow R1 in FIG. It is in a vertical position along the part 11. Next, as shown by an arrow R2 in FIG. 10, the right gate-shaped member 2 is rotated around the right support projection 34 forming the first right vertical axis, and then the left gate By rotating the shaped member 1 together with the backrest member 4 around the left support projection 33 forming the left first vertical axis as shown by an arrow R3 in FIG. The left gate-shaped member 1 and the right gate-shaped member 2 are overlapped on both sides of the backrest member 4 on the front support rod 3. The hanging seat-type folding chair A thus folded can be carried in a bag (not shown).

When unfolding and assembling the folded hanging seat type folding chair A, a procedure reverse to the above-mentioned folding procedure may be performed.

In the embodiment described above, since the pair of left and right portal members 1 and 2 are made of a metal round pipe material, the strength is excellent. If these portal members 1 and 2 are made of a resin pipe, weight reduction can be easily achieved. Further, in the present invention, the extension mechanism is not limited to the clamp 53 described above, and other types, such as a buckle, may be employed.

[0031]

According to the hanging seat type folding chair of the present invention, the burden applied to the user's waist and feet is reduced in both the sitting state and the sitting state, and the posture of the user is reduced. It is stable and does not cause much fatigue due to long-term use. In addition, when folded, one gate-shaped member and the other gate-shaped member are overlapped on both sides sandwiching the backrest, so that a compact shape can be easily carried in a bag. Further, since the height of the seating seat can be adjusted according to the size of the user's body, the effect of eliminating the feeling of fatigue due to long-time use as described above is promoted. Furthermore, the connection between the mounting portion of the backrest member and the mounting tool during use,
Release of the connection at the time of folding can be quickly and easily performed only by inserting and removing the insertion pin. Further, at the time of use, there is an effect that the wobble is prevented and the use state is stabilized by the action of the presser provided on the insertion pin.

The hanging seat-type folding chair according to the present invention, which has such an effect, that is, the effect of reducing the burden on the feet and waist when sitting for a long time, can be used indoors for television, reading, and playing Go. , Shogi, mahjong, video games, and various indoor games, knitting, calligraphy, dialogue with customers, meals, banquets, readings between Buddhas, meals and meetings at temples and meeting places, etc. It is useful for not only bad people but also young people and healthy people, and it can be carried in a bag, so it is possible to watch sports, outdoor meetings, banquets, camping, fishing, etc. And can be used in a wide variety of applications.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a state in which a hanging seat type folding chair according to an embodiment of the present invention is assembled, as viewed from the front upper side.

FIG. 2 is a schematic front view illustrating an operation of the hanging seat type folding chair in a use state.

FIG. 3 is a perspective view showing a telescopic mechanism of the seat.

FIG. 4 is a partially cutaway front view of an attachment portion between a left gate member and a backrest member.

FIG. 5 is a partially cutaway front view of a mounting portion between a left front leg and a front support rod.

FIG. 6 is a schematic perspective view showing an attachment provided on the right gate-shaped member side, an attachment portion on the backrest member side, an insertion pin, and the like.

FIG. 7 is a partially cutaway front view when the attachment and the attachment are connected.

FIG. 8 is a plan view showing a state where the hanging seat type folding chair is assembled.

FIG. 9 is a plan view showing a state in which the backrest member is folded.

FIG. 10 is a plan view showing a state where the right gate-shaped member is folded.

FIG. 11 is a plan view showing a completely folded state of the hanging seat type folding chair.

[Explanation of symbols]

 A Suspended seat type folding chair 1, 2 Gate member 3 Front support rod 4 Backrest member 5 Seating seat 6 Attachment pin 7 Insertion pin 11, 21 Rod section 12, 22 Front leg section 13, 23 Rear leg section 14 Bolt (second (Vertical axis) 33, 34 Supporting projection (first vertical axis) 42 Mounting part 43 Pin insertion hole 53 Clamp (expansion and contraction mechanism) 61 Upper plate part 62 Rear plate part 63 Lower plate part 64 Opening port 65 Pin insertion hole 75 Presser

Claims (4)

[Claims] 1. A rod having a longitudinally long rod, front and rear legs integrally connected to a front end and a rear end of the rod, respectively, and a front leg and a rear leg thereof. And a pair of left and right portal members which are opposed to each other at a distance longer than the distance between them, and a pair of left and right front legs provided in these portal members. A front support rod is rotatably connected to each of the front legs so as to be rotatable relative to each other around a first pair of left and right first longitudinal axes. Between a vertical position along the rod portion and a horizontal position extending in the horizontal direction from the gate-shaped member and suspended between the pair of left and right gate-shaped members.
One end of a backrest member is attached so as to be rotatable around a vertical axis, and an attachment portion is provided at the other end of the backrest member, which can be attached to and detached from an attachment provided at a rear portion of the other portal member. A hanging seat type folding chair, wherein a flexible seating sheet is suspended in a hanging state between the respective rod portions of the pair of left and right gate members. 2. The hanging seat type folding chair according to claim 1, wherein the seating seat is provided with a telescopic mechanism capable of adjusting a hanging width of the seating seat. 3. The mounting device according to claim 1, wherein the mounting member includes an upper plate, a rear plate vertically extending from a rear end of the upper plate, and a lower plate protruding forward from a lower end of the rear plate. And an opening formed between the front end of the upper plate portion and the front end of the lower plate portion. A concentric pin insertion hole is formed in the plate portion and the lower plate portion, and when the fitting portion is fitted to the mounting portion of the backrest member that can be fitted to and removed from the mounting device through the opening. A pin insertion hole concentrically arranged with the pin insertion hole is formed, and an insertion pin that can be inserted into and removed from the pin insertion hole of the attachment and the pin insertion hole of the attachment portion fitted to the attachment. The hanging seat-type folding chair according to claim 1 or 2, further comprising: 4. When the insertion pin is inserted into the pin insertion hole of the attachment and the pin insertion hole of the attachment portion fitted to the attachment, the insertion pin is inserted into the insertion pin. By contacting the rear surface of the rear plate portion of the mounting tool in a range extending to the left and right sides of the insertion position of the insertion pin, the mounting tool centering on the insertion pin and the mounting portion of the backrest member are connected to each other. The folding seat-type folding chair according to claim 3, further comprising a plate-like holding member that suppresses relative rotation.