JP6770728B2 - A bag with a folding chair and a base frame that composes it - Google Patents

Description

The present invention relates to a bag provided with a foldable chair and a base frame constituting the bag, and particularly to a bag having a foldable chair that allows the chair to be easily used and can be conveniently used. Regarding the base frame.

A bag having a foldable chair has been developed (see Patent Document 1). As shown in FIGS. 17 and 18, this bag is connected to the back surface of the bag and can be used as a chair 190 by opening the pedestal 191. Therefore, the bag can be conveniently used as a chair when taking a break. However, this chair 190 has a drawback that it takes time and effort to put it into use and fold it. When used, the pedestal 191 is opened horizontally, then the folding legs 192 are opened to support and lock the pedestal 191 horizontally, and for further folding, the folding legs 192 are closed and the seat is closed. This is because the table 191 is folded in a horizontal position with the support column 195.

In order to solve the above problems, the applicant has applied for a bag having a foldable chair shown in FIGS. 19 and 20 (see Patent Document 2). This bag has a pair of struts 205 whose lower ends are connected to the horizontal pedestal 201, a pedestal 231 which is foldably connected to the stanchions 205, and a pedestal stopper that limits the lowering position of the pedestal 231. 237, the folding leg 232 connected to the pedestal 231 so that the upper end can be tilted, and one end connected to the middle of the folding leg 232, and the other end approaching the support column 205 on the lower surface of the pedestal 231. Also, the opening of the folding leg 232 is limited by connecting one end to the middle of the folding leg 232 and the other end to the horizontal base 201, which are connected so that they can move away from each other. It has 2 links 234.

In this bag, the connecting portion 240 between the seat 231 and the support 205 is raised, and the seat 231, the folding legs 232, the first link 233, and the second link 234 are folded in a posture parallel to the support 205, and the seat is seated. The pedestal 231 is opened horizontally from the vertical posture, the connecting portion 240 between the pedestal 231 and the support column 205 is lowered and stopped at the pedestal stopper 237, the folding leg 232 is opened, and the first link 233 is supported by the support column. The pedestal 231 is held in a horizontal position via the first link 233 and the folding leg 232 in a state where the second link 234 limits the opening degree of the folding leg 232 by moving the seat away from the 205. Further, this bag connects the first link 233 and the second link 234 via an elastic rod 239 in which no elastic force acts at the folded position, and the elastic force of the elastic rod 239 is applied to the support column 205. The tilted second link 234 allows the first link 233 to move along the pedestal 231.

In the above bag, when the pedestal is opened and used as a chair, the elastic rod moves the first link to the support position of the pedestal, and when the pedestal is closed and the chair is folded, the elastic rod becomes the first. Move the link to the folding position. Therefore, while having an extremely simple structure in which the first link and the second link are connected by an elastic rod, the folding chair can be easily and easily and quickly put into use, and can be quickly folded and used conveniently. ..

Japanese Unexamined Patent Publication No. 2004-344355 JP-A-2009-297177

However, in the above bag, when the seat is opened to make a chair, the horizontal angle of the seat is different from the direction in which the elastic rod tries to move the tip of the first link to the support position of the seat. If this is the case, there is a problem that the tip of the first link cannot be quickly moved to the support position of the pedestal, and the pedestal cannot be quickly placed in the fixed position in the horizontal posture. Also, when folding the pedestal, it is necessary to move the tip of the first link in a direction approaching the support column.

Further, since the first link and the second link are connected by an elastic rod and the first link is urged in a predetermined direction via the elastic rod, there is a problem that an elastic rod is required and the manufacturing cost is high. is there. Further, since the elastic rod is formed of elastically deformable hard plastic, there is a problem that it is difficult to maintain a predetermined elastic force for a long period of time due to deterioration over time.

The present invention has been developed for the purpose of solving the above drawbacks. One of the objects of the present invention is to provide a bag having a foldable chair that can be easily and easily expanded and used in a foldable state while having a simple structure, and a base frame constituting the same. There is.

Means for Solving Problems and Effects of Invention

In order to achieve the above object, according to the bag having a folding chair according to the first aspect of the present invention, the bag includes a bag main body 2 and a travelable base frame 1 on which the bag main body 2 is mounted. The base frame 1 has a horizontal base 3 in which a traveling caster 4 is fixed to the lower surface and a bag main body 2 is arranged on the lower surface, and a pair of columns 5 having a lower end connected to the horizontal base 3. It is provided with a folding chair 7 that is foldably connected to the support column 5. The folding chair 7 includes a pedestal 8 which is connected to a support column 5 so that it can be folded from a horizontal position to a vertical position and can move up and down, a pedestal stopper 34 that limits the lowering position of the pedestal 8, and a pedestal. A folding leg 9 connected to the first end 8A on the support column side of the 8 so that the upper end can be tilted, and a second end facing the first end 8A of the pedestal 8 with one end as a fixed end 31B. A first link 31 that is tiltably connected to the end 8B and is connected to the folding leg 9 with the other end as the movable end 31A so that it can move up and down along the folding leg 9, and the folding leg 9. The intermediate stopper 35, which is fixed to the intermediate portion and limits the descending position of the movable end 31A of the first link 31, can be tilted with one end in the middle of the folding leg 9 and the other end with the lower end of the support column 5 or the horizontal base 3. A second link 32 that is connected in this way to limit the opening degree of the folding leg 9 and a third link 33 that is connected to the pedestal 8 and the support column 5 are provided. The base frame 1 is tilted so that the pedestal 8, the folding legs 9, the first link 31, and the second link 32 are in a vertical posture parallel to the support column 5, and the pedestal 8 and the support column 5 are connected to each other. The part is raised and the folding chair 7 is folded. Further, in the base frame 1, the folding legs 9 are opened, the pedestal 8 is opened horizontally from the vertical posture, and the connecting portion between the pedestal 8 and the support column 5 is lowered by the pedestal stopper 34. The folding chair 7 is deployed in a state where the movable end 31A of the first link 31 descends and is stopped by the intermediate stopper 35, and the second link 32 limits the opening degree of the folding leg 9, and the second link 32 is deployed. The pedestal 8 is held in a horizontal position via the 1-link 31, the folding legs 9, and the 2nd link 32.
Further, the third link 33 can be arranged so as to be rotatable in a vertical plane by connecting one end to the first end portion 8A of the pedestal 8 and the other end to the intermediate portion of the support column 5. .. This bag pushes up the first end 8A while tilting the third link 33 so that the third link 33 is in the vertical posture when the pedestal 8 in the horizontal posture is in the vertical posture, and the pedestal 8 and the support column 5 are connected to each other. The connection can be raised.

With the above configuration, the folding chair 7 provided on the base frame lowers the connecting portion between the pedestal and the support column when the pedestal folded in the vertical posture is opened in the horizontal direction, and is stopped by the pedestal stopper. However, the movable end of the first link is lowered along the folding leg that is opened with the opening limited by the second link, and the chair is stopped at the stop position by the intermediate stopper to make the folding chair easy and smooth. Can be expanded to. Further, the pedestal opened in the horizontal posture can be stably held in the horizontal posture via the first link, the folding leg, and the second link.

FIG. 7 shows a state in which the folding chair of the bag is unfolded, and FIG. 8 shows a state in which the folding chair is folded. As shown in FIG. 7A, the folding chair 7 in the folded state is shown in FIG. 7C when the folding legs 9 are opened and the pedestal 8 is opened in the horizontal direction as shown in FIG. 7B. As shown, the second link 32 is tilted away from the support column 5 to limit the opening degree of the folding leg 9, and the movable end 31A of the first link 31 is aligned with the folding leg 9 to be opened. It descends and stops at the stop position at the intermediate stopper 35. The first link 31 in which the movable end 31A is lowered and held at the stop position by the intermediate stopper 35 is held in a state of supporting the pedestal 8 from below. Therefore, the pedestal 8 opened in the horizontal posture is horizontally supported by the pedestal stopper 34 on the connecting side with the support column 5 and the end side away from the support column 5 by the first link 31 and the folding legs 9. It is held in a good posture. Further, when the folding chair 7 is folded, as shown in FIG. 8A, the second end portion 8B of the pedestal 8 is raised in a state where the first link 31 is tilted toward the pedestal 8 to raise the movable end 31A. Is lowered by its own weight, the movable end 31A of the first link 31 rises along the folding leg 9, and the seat 8 and the first link 31 are in a parallel posture. In this state, the folding leg 9 is folded toward the support column 5, the upper end of the folding leg 9 connected to the pedestal 8 is pulled up, and the folding leg 9 is tilted in a vertical posture parallel to the support column 5. In this state, the seat 8, the folding legs 9, the second link 32, and the first link 31 are in a posture parallel to the support column 5, and the folding chair 7 is folded along the support column 5.

In the bag having the folding chair of the present invention, the first link 31 has a sliding cylinder 51 that slides up and down along the folding legs 9, one end of which is the second end 8B of the pedestal 8, and the other end. Is provided with a link body 50 rotatably connected to the sliding cylinder 51, and when the folding chair 7 is deployed, the sliding cylinder 51 is used as the movable end 31A of the first link 31 and is attached to the folding leg 9. It can be lowered by its own weight along it.

With the above configuration, the sliding cylinder can be lowered by its own weight along the folding legs and placed in a fixed position with the intermediate stopper. Therefore, the first link can be quickly placed in a predetermined posture and the folding chair can be deployed while sitting. Can stably support the platform.

In the bag having the folding chair of the present invention, the seat 8 includes a seat plate 40 that serves as a seat in a horizontal posture, the seat plate 40 has a substantially rectangular shape, and the width (W) of the seat plate 40 is wide. Can be made larger than the distance (D) between the pair of columns 5.

With the above configuration, the seating surface can be widened by making the seating surface plate of the pedestal rectangular and widening the width, so that the user can sit comfortably and stably.

In the bag having the folding chair of the present invention, the seat 8 is provided with a peripheral wall 41 projecting downward in a horizontal posture along the circumference of the seat plate 40, and the first end 8A and the second end 8A of the seat 8 and the second seat 8 are provided. A notch 42 for guiding the support column 5 can be formed in the peripheral wall 41 formed along the end portion 8B. Further, in the vertical posture of the pedestal 8, the peripheral walls 41 on both sides of the pedestal 8 are arranged outside the pair of struts 5, and the stanchions 5 are guided to the notch 42 to form a part of the pair of struts 5. Can be stored inside the pedestal 8.

With the above configuration, by providing a peripheral wall that projects downward along the circumference of the seat plate, it is possible to improve the sitting comfort while increasing the strength of the seat. Further, by providing notches for guiding the columns on the peripheral walls located in front of and behind the pedestal, the peripheral walls on both sides of the pedestal are arranged outside the pair of columns when the pedestal is in the vertical posture. By guiding the columns to the notch, the pair of columns and the pedestal that can be folded in parallel to each other can be folded in a small space. Specifically, it can be folded in a small space with a part of the pair of columns stored inside the pedestal.

With the above configuration, when the pedestal in the horizontal posture is folded in the vertical posture, the third link that tilts in the vertical plane pushes up the first end of the pedestal, thereby forming the connecting portion between the pedestal and the support. It can be raised and the pedestal can be smoothly folded into a vertical position.

The bag having the folding chair of the present invention can be provided with the elastic body 65 at the connecting portion between the seat 8 and the first link 31. The elastic body 65 can urge the first link 31 against the pedestal 8 in a direction in which the movable end 31A of the first link 31 is separated from the pedestal 8.

With the above configuration, when the pedestal is deployed in the horizontal posture, the first link, which is in a posture parallel to the pedestal in the vertical posture, is smoothly tilted in the direction of expanding from the pedestal, and the pedestal is quickly deployed. can do.

In the bag having the folding chair of the present invention, one end of the coil spring is extended in the tangential direction as a coil spring in which the elastic body 65 is inserted into a rotating shaft 54 that connects the fixed end 31B of the first link 31 to the pedestal 8. It can be connected to the pedestal 8 and the other end can be extended in the tangential direction to be connected to the first link 31.

With the above configuration, the first link can be urged in a predetermined direction by using an elastic body having a simple structure and inexpensive.

The bag having the folding chair of the present invention includes a lock mechanism 60 that locks the pedestal 8 in a vertical posture, and an unlock button 61 that releases the locked state when the lock mechanism 60 tilts from the vertical posture to the horizontal posture. Can be provided on the tip end side of the pedestal 8.

In the bag having the folding chair of the present invention, the locking mechanism 60 is arranged elastically at the locking position of the locking portion 62 provided on the second link 32 and the seat 8. An elastic protrusion 63 that protrudes and a drive mechanism 64 that connects the elastic protrusion 63 to the unlock button 61 and moves the elastic protrusion 63 from the locking position to the unlocking position can be provided.

This bag has the feature that the pedestal can be used as a chair by operating the unlock button, and the pedestal can be locked in the folded position by the locking mechanism.

In the bag having the folding chair of the present invention, the upper and lower pedestals 30 can be connected to the support column 5 so as to be able to move up and down, and the pedestal 8 and the folding legs 9 can be connected to the upper and lower pedestals 30 so as to be foldable. A bag that can be made.

Although this bag has a simple structure, the pedestal can be connected to the support column so that it can be moved up and down and can be tilted, and the folding legs can be connected to the pedestal so that it can be tilted.

In the bag having the folding chair of the present invention, one end of the second link 32 can be connected to the intermediate stopper 35 provided on the folding leg 9.

With the above configuration, the connecting position of the folding leg and the first link can be brought close to the connecting position of the second link and the folding leg, and the pedestal deployed in the horizontal posture can be folded with the first link. The legs and the second link provide stable and reliable support.

In the bag having the folding chair of the present invention, the horizontal base 3 has a substantially quadrangular bottom view, and four swingable casters 4 that are rotatable in a horizontal plane are fixed to the four corners of the bottom surface. The base frame 1 can be moved by making the base frame 1 self-supporting by the four casters 4 and making the casters 4 rotatable in a horizontal plane. Further, the stopper mechanism is provided with a stopper mechanism for stopping the movement of the base frame 1 by stopping the horizontal orientation of the four casters 4 in the stop direction for stopping the movement of the horizontal base 3. The horizontal orientation of the four casters 4 can be held in the stopped state in the stop direction, and the movement of the base frame 1 can be stopped.

With the above configuration, four casters that can rotate in a horizontal plane are provided at the four corners of the bottom surface of the horizontal table, and the base frame is in a self-standing position, while the stop mechanism moves the horizontal table in the horizontal direction of the four casters. The movement of the base frame can be stopped by stopping in the stop direction and holding the horizontal orientation of the four casters in the stop direction by the stopper mechanism. In this structure, the stopper mechanism can stop the horizontal orientation of the four casters in the stop direction to stop the movement of the base frame, so that the folding chair can be opened and the base frame can be stably moved without moving. You can sit in a chair.

The base frame of the present invention is a base frame on which the bag body 2 can be mounted and can travel. A horizontal base 3 on which the traveling casters 4 are fixed on the lower surface and the bag body 2 can be mounted on the lower surface, and water. It includes a pair of columns 5 whose lower ends are connected to the flatbed 3, and a folding chair 7 which is foldably connected to the columns 5. The folding chair 7 includes a pedestal 8 which is connected to a support column 5 so that it can be folded from a horizontal position to a vertical position and can move up and down, a pedestal stopper 34 that limits the lowering position of the pedestal 8, and a pedestal. A folding leg 9 which is connected to a first end 8A on the support column side of 8 so that the upper end can be tilted, and a second end facing the first end 8A of the pedestal 8 with one end as a fixed end 31B. A first link 31 that is tiltably connected to the end 8B of 2 and is connected to the folding leg 9 with the other end as the movable end 31A so that it can move up and down along the folding leg 9. An intermediate stopper 35 fixed to the middle portion of the first link 31 to limit the descending position of the movable end 31A of the first link 31, one end to the middle of the folding leg 9, and the other end to the lower end of the support column 5 or the horizontal base 3. It is provided with a second link 32 that is connected so as to be tilted to limit the opening degree of the folding leg 9, and a third link 33 that is formed by connecting the pedestal 8 and the support column 5 . The base frame 1 is tilted so that the pedestal 8, the folding leg 9, the first link 31, and the second link 32 are in a vertical posture parallel to the support column 5, and the connecting portion between the pedestal 8 and the support column is formed. Is raised, the folding chair is folded, the folding legs 9 are opened, the pedestal 8 is opened horizontally from the vertical posture, and the connecting portion between the pedestal 8 and the support column 5 is lowered. The folding chair 7 is deployed in a state where the movable end 31A of the first link 31 is lowered and stopped at the intermediate stopper 35, and the second link 32 limits the opening degree of the folding leg 9. The pedestal 8 can be held in a horizontal position via the first link 31, the folding leg 9, and the second link 32. Further, the third link 33 can be arranged so as to be rotatable in a vertical plane by connecting one end to the first end portion 8A of the pedestal 8 and the other end to the intermediate portion of the support column 5. .. This bag pushes up the first end 8A while tilting the third link 33 so that the third link 33 is in the vertical posture when the pedestal 8 in the horizontal posture is in the vertical posture, and the pedestal 8 and the support column 5 are connected to each other. The connection can be raised.

According to the above configuration, when the base frame is opened in the horizontal direction when the pedestal is folded in the vertical posture, the connecting portion between the pedestal and the support is lowered to the stop position with the pedestal stopper, and the second link is used. The movable end of the first link is lowered along the folding leg that is opened in a state where the opening is limited, and the folding chair can be easily and smoothly deployed by stopping at the stop position with the intermediate stopper. Further, the pedestal opened in the horizontal posture can be stably held in the horizontal posture via the first link, the folding leg, and the second link.

FIG. 5 is an exploded perspective view of a bag having a folding chair according to an embodiment of the present invention. It is a perspective view which shows the use state of the folding chair of the bag shown in FIG. It is a side view of the bag shown in FIG. It is a rear view of the base frame of the bag shown in FIG. FIG. 2 is an enlarged cross-sectional view of a part of the VV line of the base frame shown in FIG. It is a VI-VI line sectional view of the base frame shown in FIG. It is sectional drawing which shows the state which unfolds the folding chair of the base frame shown in FIG. It is a side view which shows the state which the folding chair of the base frame shown in FIG. 5 is folded. It is IX-IX line sectional view of the base frame shown in FIG. It is an enlarged sectional view which shows the structure of the support column stopper provided in the support column. FIG. 5 is an enlarged cross-sectional view showing a state in which the support column stopper of the support column shown in FIG. 10 is released. It is a bottom sectional view of a horizontal table. It is an enlarged sectional view which shows the part which connects a caster to a horizontal base. It is a schematic bottom view which shows an example of the stop direction of four casters. It is a schematic bottom view which shows another example of the stop direction of 4 casters. It is a schematic bottom view which shows another example of the stop direction of 4 casters. It is a perspective view of the bag which has a conventional folding chair. It is a bottom perspective view which shows the use state of the folding chair of the bag shown in FIG. It is a bottom perspective view which shows the use state of the bag which has a folding chair which the present applicant filed earlier. It is a figure which shows the process of unfolding the folding chair of the bag shown in FIG.

Hereinafter, examples of the present invention will be described with reference to the drawings. However, the examples shown below exemplify a bag having a folding chair for embodying the technical idea of the present invention and a base frame constituting the bag, and the present invention uses the following bag and base frame. Not specific to things. Furthermore, this specification never specifies the members shown in the claims as the members of the examples.

A bag having a folding chair according to an embodiment of the present invention (hereinafter, may be simply referred to as a "bag") is shown in FIGS. 1 to 3. FIG. 1 is a perspective view of a bag having a folding chair, FIG. 2 is a perspective view showing a usage state of the folding chair of the bag shown in FIG. 1, and FIG. 3 is a side view of the bag shown in FIG. The bag shown in FIGS. 1 to 3 includes a bag main body 2 and a travelable base frame 1 on which the bag main body 2 is mounted.

(Bag body 2)
The bag body 2 can be manufactured, for example, by sewing a flexible sheet. The bag body 2 can be opened with a fastener or the like to store articles in the internal space. In addition, if necessary, members such as handles and slings for gripping, shouldering, etc. may be provided. The bottom surface of the bag body 2 is formed to be flat so that the bag body 2 can be placed on the base frame 1 and stand on its own. Preferably, as shown in FIGS. 1 to 3, the outer shape is box-shaped. The bag body 2 can have a shape and size that can be mounted on the base frame 1. The bags of FIGS. 1 to 3 are attached to the base frame 1 so that the bag body 2 can be attached and detached. This bag has the feature that the bag body 2 can be easily replaced. However, the bag body can also be fixed to the base frame 1 so that it cannot be attached or detached. The structure in which the bag body 2 is detachably attached to the base frame 1 will be described in detail later.

(Base frame 1)
The base frame 1 has a horizontal base 3 in which a traveling caster 4 is fixed to the lower surface and a bag body 2 is arranged on the lower surface, a pair of columns 5 having a lower end connected to the horizontal table 3, and the columns. It is provided with a folding chair 7 which is foldably connected to 5.

(Horizontal stand 3)
The horizontal base 3 is manufactured by molding plastic. The horizontal base 3 has a substantially quadrangular bottom view, and four swingable casters 4 that are rotatable in a horizontal plane are fixed to the four corners of the bottom surface. The horizontal base 3 has four casters 4 that make the base frame 1 self-supporting, and the casters 4 can be rotated in a horizontal plane so that the base frame 1 can be moved.

The horizontal base 3 has a pair of columns 5 fixed to one side so as to extend upward and stand on its own. The entire bottom surface of the horizontal base 3 is a quadrangle, and in the figure, it is a rectangle. The horizontal base 3 has two columns 5 fixed in a vertical position and parallel to each other on one side of the long side of the rectangle. The horizontal base 3 is provided with support bases 11 at both ends on one side of the long side in order to support the support columns 5 in a vertical posture. The support base 11 has a square tubular shape that is supported by inserting the lower end portion of the support column 5, and is formed in a shape that stands upright with respect to the horizontal base 3. The support column 5 is supported by inserting the lower end portion through the support base 11.

The horizontal base 3 and the support base 11 are integrally molded of plastic. The base frame 1 in which the horizontal base 3 and the support base 11 are integrally molded with plastic can strengthen the connection strength between the horizontal base 3 and the support base 11. However, in the base frame 1, the horizontal base 3 and the support base 11 can be molded from separate plastics and fixed by a structure such as adhesion or screwing. The support base 11 is provided with a vertical hole (not shown) for inserting and connecting the support column 5, and the support column 5 is inserted into the vertical hole and connected. In the base frame 1 in the figure, since the support column 5 is prismatic, the vertical holes are prismatic. The column 5 inserted in the vertical hole is fixed by a set screw that penetrates the support 11 and presses the tip against the column 5. However, the columns 5 can be fixed by adhering to the vertical holes, or can be connected by a fitting structure that does not come off. In the structure in which the support column 5 is connected to the horizontal table 3 in this structure, the support column 5 can be fixed to the horizontal table 3 with an extremely tough structure.

The horizontal table 3 has a flat upper surface, and reinforcing ribs 28 (see FIG. 12) that intersect diagonally with respect to the vertical and horizontal directions are integrally formed on the lower surface thereof. The horizontal base 3 can have a tough structure with reinforcing ribs 28 while making the whole thin and lightweight. Further, the horizontal base 3 is provided with through holes 29 that vertically penetrate the horizontal base 3 between the reinforcing ribs 28 that are provided so as to cross each other to reduce the overall weight.

Further, the horizontal base 3 of FIGS. 1 to 3 is provided with a protruding portion 12 projecting in a direction to widen the width of the horizontal base 3 on the side portion fixing the support column 5 and on the left side in the drawing. A support 11 is provided on the protrusion 12 to fix the support column 5, and casters 4 are fixed on the lower surface. The horizontal base 3 provided with the protruding portion 12 can be stabilized by widening the distance between the casters 4 fixed on both sides thereof. If the width (H) of the rectangular horizontal base 3 is narrowed, the rectangular horizontal base 3 is likely to fall sideways. However, a protrusion 12 is provided to widen the distance between the casters 4 in the horizontal width direction of the horizontal base 3 to improve the stability in the horizontal direction. it can. Since the casters 4 are fixed to the four corners of the horizontal base 3, the projecting portions 12 are provided at both ends on the side connecting the columns 5. The horizontal base 3 provided with the protruding portion 12 has a width of 14 to 16 cm and a length of 20 to 35 cm. However, the width can also be 12 to 35 cm.

(Strut 5)
The support column 5 is a telescopic rod that can be pulled out upward, and a grip 6 is provided at the upper end thereof. The support column 5, which is a telescopic rod, is provided with a support column stopper 15 (see FIGS. 10 and 11) for stopping at an extension position and a contraction position, which will be described in detail later. As shown by the chain line in FIG. 3, the support column 5 is curved so as to move the grip 6 from one side fixed to the horizontal base 3 toward the center when the grip 6 is extended and pulled up. The support column 5 can move the pulled-up grip 6 in a direction approaching the center from the side portion of the horizontal base 3. However, in this support column, the grip does not necessarily have to be positioned at the center of the horizontal base 3 with the grip pulled up.

Further, although not shown, the columns can be tilted and fixed to the horizontal table so as to move the grip from one side fixed to the horizontal table toward the center when the support is extended and the grip is pulled up. .. For example, a strut fixed to the left side of a horizontal platform tilts the strut so that when the grip is pulled up, the grip moves from the left side to the right side of the horizontal platform. As with the curved strut, the tilted strut does not necessarily have to be centered on the horizontal platform with the grip pulled up.

Further, although not shown, the bag can also be slanted and fixed to one side of the horizontal table, and the grip can be pulled up to move the bag from one side of the horizontal table toward the center. This bag has a large radius of curvature that curves, and the angle of inclination is close to a right angle so that the grip can be pulled up to approach the center of the horizontal platform. This is because the raised grip can be moved from the side to the center of the horizontal platform by both tilting and bending.

When the support column 5 is extended and the grip 6 is pulled up, the support column 5 has a structure in which the grip 6 is moved from one side fixed to the horizontal base 3 toward the center. However, the support does not necessarily have to be arranged so that the grip moves from one side of the horizontal base toward the center, and when it is fixed vertically to one side of the horizontal base and extended and the grip is pulled up, the horizontal base is used. It is also possible to have a structure in which the grip is moved directly above one side of the.

When the support column 5 is in a contracted state, in other words, in a state where the grip 6 is pushed down most, the grip 6 is located above or above the bag body 2 and is stopped by the support column stopper. The support column 5 is contracted at a position where the grip 6 is lowered to the lowest position, and the distance from the bottom surface of the caster 4 to the top surface of the grip 6 is about 50 cm. However, the support column 5 may be contracted at a position where the grip 6 is lowered to the lowest position, and the distance from the bottom surface of the casters 4 to the top surface of the grip 6 may be preferably 30 to 80 cm, more preferably 35 to 70 cm. The bag body 2 is made lower than the grip 6 so that the grip 6 can be easily grasped in a state where the support column 5 is contracted to make the grip 6 the lowest. When the support column 5 is in the extended state, in other words, when the grip 6 is pulled up to the highest position, the height from the bottom surface of the caster 4 to the center of the grip 6 is 60 to 100 cm, preferably 65 to 85 cm. It will be stopped.

The support column 5 includes a guide cylinder 5B fixed to the horizontal base 3 so as to extend in the vertical direction, and a drawer rod 5A inserted so as to be inserted into and removed from the guide cylinder 5B, and is gripped at the upper end of the drawer rod 5A. 6 is fixed. The guide cylinder 5B and the drawer rod 5A can be metal cylinders having different thicknesses. However, the guide cylinder and the drawer rod can also be manufactured by molding plastic into a square cylinder shape.

In the base frame 1 of FIGS. 1 and 2, two columns 5 are fixed to one side of the horizontal base 3, and a grip 6 is connected to the upper ends of the two columns 5. Further, the base frame 1 in the figure is located at both ends on one side of the horizontal base 3 and fixes the two columns 5. That is, the distance between the two columns 5 is substantially equal to the length of the long side of the rectangular horizontal base 3. As described above, the structure in which the two columns 5 are fixed to both ends of the horizontal table 3 has a feature that the columns 5 can be firmly independent with a stronger structure. This is because the rectangular frame composed of the two columns 5, the horizontal base 3, and the grip 6 can be enlarged. With this structure, in a state where the support column 5 is extended and the bag is run, the force that pushes the grip 6 in the traveling direction of the bag can be extremely reduced from acting in the direction of tilting the support column 5. Therefore, even when walking while holding the grip 6, or when pushing and moving while using the grip 6 together, the extended support column 5 can be stably run while being prevented from falling. Further, since the load applied to the connecting portion between the support column 5 and the horizontal base 3 can be extremely reduced, there is also an advantage that this portion can be effectively prevented from being damaged.

Further, the structure in which the two columns 5 are fixed to both ends of the long side of the horizontal base 3 is such that the end portion on the front end side and the rear end side with respect to the traveling direction of the base frame 1 when the bag is run on the casters 4. The support column 5 will be fixed to the end of the support. Therefore, a force is applied to the support column 5 on the front end side in the direction of pulling the horizontal table 3, and a force is applied to the support column 5 on the rear end side in the direction of pushing the horizontal table 3, so that the horizontal table 3 is smoothly applied with a light force. Can be run. In particular, this structure can travel while steering the horizontal platform 3 in an excellent direction. Therefore, it is possible to realize a feature that the horizontal base 3 provided with casters 4 capable of traveling in any direction at the four corners of the bottom surface can be stably traveled in an excellent direction.

Further, the two columns 5 connect the upper ends of the guide cylinder 5B with the connecting rod 13. The lower end of the guide cylinder 5B is fixed to the horizontal base 3, and the upper end portion is connected by the connecting rod 13. In this way, the structure in which the upper ends of the guide cylinder 5B are connected by the connecting rod 13 reinforces the two columns 5 and can stand on its own more stably. As shown in FIG. 1, an insertion gap 14 for inserting a hand is provided between the most lowered grip 6 and the connecting rod 13. This is to make it easier to grip the lowered grip 6. The grip 6 in the figure is entirely formed of plastic in a U shape, and the bent portions at both ends are connected to the drawer rod 5A to provide an insertion gap 14.

(Folding chair 7)
Further, in the bags of FIGS. 1 to 3, a folding chair 7 is connected to a pair of columns 5 so as to be foldable. The bag provided with the folding chair 7 can be comfortably rested by opening the chair, for example, when waiting in line or when tired. In particular, the bag that can run on the casters 4 provided at the four corners in the self-supporting state can be moved while being used as a cane when the grip 6 is pulled up. Therefore, by providing the folding chair 7, when moving and when not moving. There is a feature that both can be made extremely comfortable.

As shown in FIGS. 1 to 6, the folding chair 7 has a pedestal 8 connected to the support column 5 so that it can be folded from a horizontal position to a vertical position and can be moved up and down, and a lowering position of the pedestal 8. The pedestal stopper 34 to be restricted, the folding leg 9 connected to the first end 8A on the support column side of the pedestal 8 so that the upper end can be tilted, and the first end of the pedestal 8 with one end as a fixed end 31B. It is connected to the second end 8B facing the end 8A in a tiltable manner, and the other end is connected to the folding leg 9 as a movable end 31A so that it can move up and down along the folding leg 9. 1 link 31, an intermediate stopper 35 fixed to the middle part of the folding leg 9 to limit the lowering position of the movable end 31A of the first link 31, one end in the middle of the folding leg 9, and the other end 5 It is provided with a second link 32 which is connected to the lower end portion of the folding leg 9 so as to be tilted and limits the opening degree of the folding leg 9.

(Seat 8)
The pedestal 8 can be tilted in a horizontal posture (see FIG. 2) and a vertical posture (see FIG. 1) with the first end 8A on the support column side as the center of tilt, and is connected to the support column 5 so that it can move up and down. are doing. In the base frame 1 of FIGS. 1 to 5, an upper and lower pedestal 30 is connected to the upper part of the support column 5 so as to be able to move up and down along the support column 5, and the first end of the pedestal 8 is connected to the upper and lower pedestal 30. The portions 8A are connected so that they can be tilted. Both ends of the upper and lower bases 30 are connected so as to be slidable on the guide cylinder 5B of the support column 5. Since the guide cylinder 5B is a square cylinder, the upper and lower bases 30 are provided with quadrangular through holes at both ends, and the guide cylinder 5B is inserted through the through holes so that the guide cylinder 5B can slide. The upper and lower pedestals 30 are the upper end portions of the guide cylinder 5B, and are arranged so as to be able to move up and down between the pedestal stopper 34 and the connecting rod 13. When opening and closing the folding chair 7, the upper and lower pedestals 30 move up and down along the guide cylinder 5B of the support column 5 in a horizontal posture. The upper and lower pedestals 30 come into contact with the pedestal stopper 34 fixed to the support column 5 and the descent is stopped. The pedestal stopper 34 has a tubular shape through which the support column 5 can be inserted, and is fixed to the support column 5 so as not to move up and down.

As shown in FIG. 6, the seat 8 is tiltably connected to the upper and lower pedestals 30 via a tilting shaft 36 fixed in a horizontal posture inside the first end portion 8A. The tilting shaft 36 shown in the figure is a metal shaft, which is arranged so as to penetrate a plurality of bearing ribs 46 provided at the first end 8A of the pedestal 8, and both ends of the tilting shaft 36 which is a metal shaft. Is connected to the upper and lower pedestals 30.

The seat 8 shown in the figure includes a seat plate 40 that serves as a seat surface when opened in a horizontal posture. The seat 8 has a substantially rectangular shape of the seat plate 40. Further, in the seat 8 shown in FIG. 4, the width (W) of the substantially rectangular seat plate 40 is made larger than the distance (D) between the pair of columns 5. In this structure, the seating surface plate 40 of the seating pedestal 8 has a rectangular shape, and the width (W) thereof can be widened to widen the seating surface, so that the user can sit comfortably and stably.

The pedestal 8 is made of plastic, and a peripheral wall 41 projecting downward in a horizontal posture is integrally formed along the circumference of the seat plate 40. By providing the peripheral wall 41 along the periphery of the seat plate 40 in this way, it is possible to improve the sitting comfort while increasing the strength of the seat 8. The pedestal 8 shown in FIGS. 2 and 4 is formed along the first end 8A and the second end 8B in order to store the pedestal 8 wider than the distance between the columns 5 along the columns 5. A plurality of notches 42 for guiding the support column 5 in a folded state are formed on the peripheral wall 41. The pedestal 8 shown in FIG. 4 is provided with a first notch 42A for guiding the guide cylinder 5B of the support column 5 at both ends of the peripheral wall 41 on the first end 8A side, and the peripheral wall on the second end side. At both ends of the 41, a second notch 42B for accommodating the guide cylinder 5B of the support column 5, the folding leg 9, and the second link 32 is provided.

As shown in FIGS. 1 and 4, the pedestal 8 has peripheral walls 41 on both sides of the pedestal 8 arranged outside the pair of columns 5 in a vertically folded state, and the columns 5 are notched. Guided by 42, the intermediate portion of the pair of columns 5 is stored inside the pedestal 8. The pedestal 8 shown in FIG. 4 guides the support column 5 to the first notch 42A in a state of being folded from the horizontal position to the vertical position, and the support column 5, the folding leg 9, and the second link 32 are connected to the second notch portion 42B. These are stored in a fixed position inside the pedestal 8. In other words, the pedestal 8 is in a posture parallel to the support column 5 in a state where the support column 5 is stored in the first notch 42A and the support column 5, the folding leg 9 and the second link 32 are stored in the second notch portion 42B. It can be folded. The seat 8 is folded in a vertical posture by accommodating the pair of struts 5 inside the peripheral walls 41 provided on both side edges while keeping the seat plate 40 in a posture parallel to the pair of struts 5. In the above pedestal 8, when the folding chair 7 is folded, the pedestal 8 tilted in a vertical posture is stored along the support column 5.

Further, in the seat 8 shown in FIGS. 1, 2 and 5, the seat cover 43 is detachably arranged in the central region on the surface of the seat plate 40. The seat cover 43 is a cushioning material such as soft plastic or urethane. The seat 8 provided with the seat cover 43, which is a cushioning material, on the surface can be comfortably seated. Further, the seat cover 43 can be easily replaced by making it removable.

(Folding legs 9)
As shown in FIGS. 1 to 5, the folding legs 9 have a U-shaped overall shape by connecting the lower ends of the pair of metal pipes 37 with the connecting member 38, and the upper ends thereof are the columns of the pedestal 8. It is connected to the first end 8A on the side so that it can be tilted. The upper end of the folding leg 9 is connected to the upper and lower pedestals 30 so as to be tilted via a tilting shaft 36 arranged at the first end 8A of the pedestal 8. The folding legs 9 are opened and closed in a direction that is inclined with respect to the support columns 5. Since the lower end of the opened folding leg 9 is separated from the support column 5, the open folding leg 9 and the support column 5 can stably support the pedestal 8. The folding legs 9 support the pedestal 8 in a substantially horizontal position in an open state. Here, as shown in FIG. 1, the total length of the folding legs 9 is set shorter than the distance from the upper and lower pedestals 30 in the raised position to the lower surface of the casters 4 when the folding chair 7 is folded. This is to prevent the lower end of the folding leg 9 from coming into contact with the ground while storing the folding leg 9 so as to be in a posture parallel to the support column 5. Further, as shown in FIG. 2, the folding leg 9 is in a posture in which the lower end of the folding leg 9 is inclined in a direction away from the support column 5 from the upper and lower pedestals 30 in the descending position when the folding chair 7 is deployed. , The lower end is brought into contact with the ground to support the pedestal 8 opened in a horizontal posture.

The connecting member 38 of the folding leg 9 is made of, for example, plastic. The connecting member 38 shown in FIGS. 2 and 4 connects the lower ends of the two metal pipes 37, and has leg portions 38A protruding downward at both ends. The folding leg 9 has a structure in which the leg portion 38A is brought into contact with the ground to support the load applied to the folding leg 9. Since the leg portion 38A of the folding leg 9 is made of plastic, the contact resistance with the ground is increased and the folding leg 9 can be stably supported. Further, the connecting member 38 shown in FIG. 4 is formed with non-contact recesses 38B at both ends so that when the adjacent casters 4 rotate in a horizontal plane, they do not contact and interfere with both end surfaces of the connecting member 38. There is. As shown by the chain line in FIG. 4, the folding leg 9 allows the casters 4 rotating in the horizontal plane to pass through the non-contact recess 38B of the connecting member 38, thus limiting the swinging motion of the casters 4 in the horizontal plane. You can swing your head stably without any problems.

The base frame 1 of FIG. 1 houses the folding legs 9 between the protruding portions 12 of the horizontal base 3, and also stores the folding legs 9 inside the peripheral wall 41 of the seat 8 that is folded in a vertical posture. .. In the seat 8 shown in FIG. 4, the folding legs 9 are housed in the second notch 42B of the peripheral wall 41 provided on the second end 8B side. As a result, when the folding legs 9 and the pedestal 8 are folded in the vertical posture, the folding legs 9 and the pedestal 8 do not protrude significantly to the outside of the pair of columns 5, in other words, the base frame 1 It can be folded compactly without enlarging the outer shape. The base frame 1 accommodates the folding legs 9 of the folding chair 7 between the protrusions 12, and arranges the folding chair 7 without widening the overall width. This bag has a feature that the folding legs 9 can be stored in the space created by the protruding portion 12 while improving the stability in the lateral width direction at the protruding portion 12.

(1st link 31)
One end of the first link 31 is connected to the second end 8B of the pedestal 8, and the other end is connected to the folding leg 9 so that it can move up and down along the folding leg 9. The first link 31 shown in FIGS. 3 to 5 has a sliding cylinder 51 that slides up and down along the folding legs 9, one end of which slides on the second end 8B of the pedestal 8, and the other end of which slides. It includes a link body 50 rotatably connected to the cylinder 51. The sliding cylinder 51 is a cylinder through which the metal pipe 37 of the folding leg 9 is inserted, and is formed of plastic so that it can move up and down along the metal pipe 37. In the first link 31 of FIG. 4, a sliding cylinder 51 is inserted through each of the two metal pipes 37.

The link main body 50 is formed of plastic, and as shown in FIG. 4, has a plate shape in which both side edges are curved in a central concave shape in a plan view, and as shown in FIG. 5, one surface (FIG. 5). In No. 5, a peripheral wall 52 is provided around the surface facing the seat 8), and a plurality of ribs 53 are formed in the central portion to reinforce the surface. One end of the link body 50 is connected to the inside of the second end 8B of the pedestal 8 via a rotation shaft 54. The rotating shaft 54 shown in FIG. 5 is a metal shaft that penetrates one end of the link body 50 in the horizontal direction and connects both ends to a bearing portion 44 provided so as to project from the inner surface of the pedestal 8. Are rotatably connected in a vertical plane. Further, the other end of the link main body 50 is connected to the sliding cylinder 51 via a rotating shaft 55. The rotating shaft 55 shown in FIG. 5 is a metal shaft that penetrates the other end of the link body 50 in the horizontal direction and rotatably connects both ends to the opposing sliding cylinder 51 in a vertical plane. .. As described above, the first link 31 in which the sliding cylinder 51 and the link body 50 are made of plastic has a feature that it can be inexpensive and lightweight. However, the first link can also be made of metal.

When the folding chair 7 is opened and closed, the first link 31 is connected to the pedestal 8 with the rotation shaft 54 side, which is one end of the link body 50, as a fixed end 31B, and the sliding cylinder 51 as a movable end 31A. It can be moved up and down along the folding leg 9. In particular, the first link 31 has its own weight along the folding leg 9 of the movable end 31A of the first link 31 that rotates about the rotation shaft 54 on the fixed end 31B side when the folding chair 7 is deployed. I try to lower it with. Therefore, the seat 8 can be stably supported while the first link 31 is quickly arranged in a predetermined posture and the folding chair 7 is deployed. The sliding cylinder 51 that descends along the folding leg 9 comes into contact with the intermediate stopper 35 fixed to the intermediate portion of the folding leg 9 and stops descending. The intermediate stopper 35 has a tubular shape through which the metal pipe 37 of the folding leg 9 can be inserted, and is fixed to the folding leg 9 so as not to move up and down. The first link 31, whose descending position of the movable end 31A is specified by the intermediate stopper 35, bridges between the second end 8B of the pedestal 8 and the intermediate portion of the folding leg 9 to provide the pedestal 8. Support a horizontal posture.

(Elastic body 56)
Further, the folding chair 7 shown in FIG. 5 is provided with an elastic body 56 at a connecting portion between the seat 8 and the first link 31. The elastic body 56 is urged in a direction in which the first link 31 is widened with respect to the pedestal 8 and in a direction in which the movable end 31A of the first link 31 is separated from the pedestal 8. In this structure, when the pedestal 8 is deployed in the horizontal posture, the first link 31 can be smoothly tilted in the direction in which the movable end 31A is separated from the pedestal 8, and the pedestal 8 can be quickly deployed. The elastic body 56 shown in FIG. 5 is a coil spring inserted through a rotating shaft 54 that connects the fixed end 31B of the first link 31 to the pedestal 8. The elastic body 56, which is a coil spring, extends one end in the tangential direction and connects to the pedestal 8, and extends the other end in the tangential direction and connects to the link body 50 of the first link 31. There is. This structure has a simple structure, and the first link 31 can be urged in a predetermined direction by using an inexpensive elastic body 56. However, the folding chair 7 does not necessarily have to be provided with an elastic body, and this can be omitted.

(Second link 32)
The second link 32 is a connecting member that connects the intermediate portion of the folding leg 9 and the lower end portion of the support column 5, and limits the opening degree of the folding leg 9 that is inclined in the direction away from the support column 5. The second link 32 shown in FIGS. 4 and 5 is a metal bar having a predetermined thickness and length. The second link 32, which is a metal bar, has one end connected to the outer surface of the intermediate stopper 35 fixed to the intermediate portion of the folding leg 9 so as to be rotatable via the connector 57. Further, the second link 32 has the other end portion at the lower end portion of the support column 5 so as to be rotatable on the inner side surface of the fixing member 39 fixed above the support base 11 via the connecting tool 57. It is connected. The connecting tool 57 fixed to the intermediate stopper 35 and the fixing member 39 is parallel to each other with the central axis in the horizontal direction so that the second link 32 can be tilted in the vertical plane.

Further, the second link 32 shown in FIG. 4 is connected to the folding legs 9 and the columns 5 so that the folding legs 9 and the columns 5 arranged apart from each other can be tilted in a vertical plane while being connected to each other. Both ends are bent in the opposite direction so that they are parallel to each other. That is, as shown in FIG. 4, the second link 32 has a structure in which the intermediate portion is in an inclined posture and both ends connected to both ends thereof are connected to the folding legs 9 and the support columns 5, respectively. There is. The folding chair 7 shown in FIG. 4 is provided with two second links 32 on both sides of the folding legs 9. The two second links are arranged in a symmetrical posture, and the lower ends of the pair of columns 5 and both side surfaces of the folding legs 9 are connected so as to be rotatable in a vertical surface.

In the above second link 32, the end on the support column 5 side is a fixed end 32B, the end on the folding leg 9 side is a movable end 32A, and the movable end 32A tilts in a direction away from or close to the support column 5. .. When the folding chair 7 is deployed, the second link 32 tilts the movable end 32A in the direction away from the support column 5, and tilts the lower portion of the folding leg 9 in the direction away from the support column 5. The folding legs 9 are opened while lowering the upper and lower pedestals 30 to which the upper ends are connected, and as the upper and lower pedestals 30 are lowered, the opening angle of the folding legs 9 increases. The upper and lower pedestals 30 come into contact with the pedestal stopper 34 and the descent is stopped. In this state, the second link 32 stops the folding leg 9 from opening. The lowering position of the folding leg 9 is specified when the upper and lower pedestals 30 come into contact with the pedestal stopper 34, and the tilt of the lower portion of the folding leg 9 is restricted by the second link 32 to be held in a predetermined unfolded posture.

Although the other end of the above second link is fixed to the lower end of the column, the other end of the second link can also be fixed to the horizontal base. In this structure, for example, the other end of the second link can be rotatably connected to the side surface or the protruding portion of the horizontal table, and the second link can be tiltably arranged in the vertical plane.

(Third link 33)
Further, the folding chair 7 shown in FIG. 5 includes a third link 33 formed by connecting the pedestal 8 and the support column 5. The folding chair 7 of FIG. 5 connects a position on the first end 8A side of the pedestal 8 that recedes from the tilting shaft 36 toward the center and an intermediate portion of the support column 5 via a third link 33. are doing. The third link 33 shown in FIGS. 4 and 5 is a metal bar having a predetermined thickness and length. The third link 33, which is a metal bar, is rotatably connected to a fixing rib 45 having one end protruding from the lower surface of the pedestal 8 via a connector 58, and the other end is a pedestal stopper 34 of a support column 5. It is rotatably connected to the bar so that it can tilt in a vertical plane.

In the above third link 33, the end on the support column 5 side is a fixed end 33B, the end on the pedestal 8 side is a movable end 33A, and the movable end 33A tilts in a direction away from or close to the support column 5. When the folding chair 7 is deployed, the third link 33 tilts the movable end 33A in a direction away from the support column 5 to lower the first end portion 8A of the pedestal 8. The pedestal 8 is opened in a horizontal posture as the upper and lower pedestals 30 descend, and the upper and lower pedestals 30 come into contact with the pedestal stopper 34 and are stopped. Further, when the pedestal 8 in the horizontal posture is folded, the third link 33 pushes up the first end 8A of the pedestal 8 with the movable end 33A as a fulcrum to raise the upper and lower pedestals 30. Therefore, the folding chair 7 provided with the third link 33 can raise the upper and lower pedestals 30 in conjunction with the pedestal 8 that is folded from the horizontal posture, so that the pedestal 8 can be smoothly tilted to the vertical posture. However, the folding chair does not necessarily have to be provided with the third link, and the third link can be omitted.

The folding chair 7 having the above structure has a structure in which the seat 8 is opened so as to be interlocked with the folding legs 9 which are tilted in the direction away from the support column 5 when the seat 8 in the vertical posture is deployed in the horizontal posture. It is supposed to be. This structure will be described in detail with reference to FIG. FIG. 7A shows a state in which the seat 8, the folding legs 9, the first link 31, the second link 32, and the third link 33 are folded in a posture parallel to the support column 5. From this state, as shown by the arrow A in FIG. 7B, when the folding leg 9 is to be tilted in the direction away from the support column 5, the pedestal 8 connected via the first link 31 is indicated by the arrow B. As described above, the folding leg 9 is tilted in the unfolding direction in conjunction with the tilting of the folding leg 9. Further, the upper and lower bases 30 to which the upper ends of the folding legs 9 are connected descend along the columns 5 as shown by arrows C. In this state, the seat 8 is further deployed in a horizontal posture. Further, as shown by the arrow D in FIG. 7C, the second end portion 8B, which is the tip of the pedestal 8 approaching the horizontal posture, is lifted. In this state, as shown in FIG. 7D, the upper and lower pedestals 30 to which the first end 8A of the pedestal 8 is connected come into contact with the pedestal stopper 34 to stop the descent, and the second link 32 is folded. The open leg position of the folding leg 9 is specified in a state of limiting the opening degree of the tatami leg 9. Further, as shown by an arrow E in FIG. 7D, the sliding cylinder 51, which is the movable end 31A of the first link 31, descends by its own weight along the folding leg 9. The descending sliding cylinder 51 comes into contact with the intermediate stopper 35 fixed in the middle of the folding legs 9 to stop the descent. In this state, as shown in FIG. 5, the folding chair 7 is unfolded, and the seat 8 is held in a horizontal position via the first link 31, the folding legs 9, and the second link 32.

Further, the folding chair 7 has a structure in which the folding legs 9 are folded in conjunction with the pedestal 8 tilted in the vertical posture when the pedestal 8 in the horizontal posture is folded. This structure will be described in detail with reference to FIG. As shown by the arrow A in FIG. 8A, the link body 50 of the first link 31 is tilted toward the inside of the pedestal 8. In this state, the sliding cylinder 51 of the first link 31 rises along the folding leg 9 as shown by the arrow B. Further, as shown by the arrow C in FIG. 8B, the second end portion 8B of the pedestal 8 is lowered and tilted toward the support column 5. At this time, the pedestal 8 tilts with the movable end 33A of the third link 33 as a fulcrum, and as shown by the arrow D, raises the upper and lower pedestals 30 to which the first end 8A is connected. Since the rising upper and lower base 30 raises the upper end of the folding leg 9, the folding leg 9 is pulled up in conjunction with this, and the folding leg 9 is folded toward the support column 5 as shown by the arrow E. Further, by tilting the pedestal 8 as shown by the arrow F in FIG. 8C, the upper and lower pedestals 30 are raised, and the folding legs 9 are folded in the direction approaching the support column 5 as shown by the arrow G. As shown in FIG. 8D, the pedestal 8, the folding legs 9, the first link 31, the second link 32, and the third link 33 are folded in a posture parallel to the support column 5.

In the folding chair 7 having the above structure, when the pedestal 8 is opened, the pedestal 8 can be opened in conjunction with the folding legs 9 by opening the folding legs 9 by hand, and the movable end of the first link 31 By lowering the sliding cylinder 51, which is 31A, along the folding legs 9 by its own weight, the pedestal 8 can be easily and quickly supported with the first link 31 in an inclined posture. Further, in the folding chair 7, when the pedestal 8 is folded in the vertical posture, the pedestal 8 that tilts with the movable end 33A of the third link 33 as a fulcrum raises the upper and lower pedestals 30, so that the upper and lower pedestals 30 and the pedestal are raised. By tilting the pedestal 8 without lifting the pedestal 8 upward by hand, the upper and lower pedestals 30 are raised in conjunction with this, and the pedestal 8 and the folding legs 9 are easily and quickly parallel to the support column 5. Can be folded in a good posture.

(Lock mechanism 60)
Further, the base frame 1 shown in FIGS. 4 and 9 includes a lock mechanism 60 that locks the pedestal 8 in a vertical posture. As shown in FIG. 9, the lock mechanism 60 includes an unlock button 61 for releasing the locked state when the pedestal 8 is tilted from the vertical posture to the horizontal posture, and a locking portion formed on the second link 32. 62, the elastic protrusion 63 that is connected to the inside of the pedestal 8 and elastically protrudes to the locking position of the locking portion 62, and the elastic protrusion 63 that is operated from the locking position by operating the unlock button 61. It is provided with a drive mechanism 64 for moving to an unlocked position.

(Unlock button 61)
The unlock button 61 is provided at the second end 8B of the pedestal 8. In the folding chair 7 of FIG. 9, a through hole 40A is provided in the central portion of the second end portion 8B of the pedestal 8, and the unlock button 61 is arranged there. The unlock button 61 is located on the same surface as the upper surface of the pedestal 8 or at a position slightly protruding from the upper surface of the pedestal 8 so as not to protrude significantly from the upper surface of the pedestal 8, and there is a sense of discomfort when sitting on the pedestal 8. It is in a non-existent state. The unlock button 61 is elastically pressed by the elastic body 65 so as to project onto the surface of the pedestal 8. The unlock button 61 shown in FIG. 9 has a substantially elliptical columnar shape in a plan view, and convex portions 61A extending inward of the pedestal 8 are integrally molded at both ends on the inner surface side of the pedestal 8. .. The convex portion 61A shown in the figure is formed in a shape in which the cross-sectional area gradually decreases toward the tip end, and an inclined surface 61a is provided on the opposite inner surface side. The unlock button 61 of FIG. 9 is provided with a flange portion 61b by projecting a pair of convex portions 61A from both ends, and the flange portion 61b is brought into contact with the opening edge portion of the through hole 31A of the pedestal 8 to lock. The ascending position of the release button 61 with respect to the pedestal 8 is specified. In other words, the elastic body 65 pushes up the unlock button 61 so that it cannot be pulled out upward from the pedestal 8.

(Locking portion 62)
The locking portion 62 is guided by the tip of the elastic protruding portion 63 driven by operating the unlock button 61 to lock the elastic protruding portion 63. The locking portion shown in FIG. 9 is a locking hole 62A opened through the second link 32. That is, the second link 32 is formed as a locking portion 62 by opening a locking hole 62A at a position facing the tip of the elastic protruding portion 63 in a state of being folded in a posture parallel to the support column 5. The locking hole 62A shown in the figure has a slit shape so that the tip of the elastic protrusion 63 can be guided while the folding chair 7 is folded. As described above, in the structure in which the locking portion is provided on the second link 32, the pedestal 8 can be locked in the vertical posture while shortening the distance from the unlock button 61 to the locking portion 62. The pedestal 8 is locked in a vertical posture by inserting the elastic protrusion 63 into the locking hole 62A provided in the second link 32.

(Elastic protrusion 63)
The elastic protrusion 63 is connected to the lower surface of the pedestal 8 so as to be separated from each other on both sides and reciprocate in the opposite directions. The pedestal 8 of FIG. 4 forms a storage portion 47 for arranging a pair of elastic protrusions 63 at the center of the second end 8B side, and a pair of elastic protrusions arranged in the storage portion 47. 63 is provided so as to project from the storage portion 47 on both sides. In order to arrange the pair of elastic protrusions 63 so that they can reciprocate along the back surface of the pedestal 8, the pedestal 8 is provided with a pair of ribs 48 (see FIG. 5) extending in the reciprocating direction. An elastic protrusion 63 is arranged between the ribs 48 so that the elastic protrusion 63 can reciprocate. A cover member 67 is fixed to the tip edges of the pair of ribs 48 to prevent the pair of elastic protrusions 63 arranged between the ribs 48 from falling off.

The elastic protrusion 63 shown in FIG. 9 is formed by molding plastic into a columnar shape, and a locking convex portion 66 inserted into the locking hole 62A is provided at the tip thereof. Further, the elastic protrusion 63 forms a recess 63B for guiding the metal pipe 37 of the folding leg 9 at a position retracted from the locking protrusion 66. The recess 63B has a shape in which the reciprocating elastic protrusion 63 does not interfere with the metal pipe 37. Furthermore, the elastic protrusion 63 has a slit 63A extending in the reciprocating direction at the rear end thereof, and guides the guide protrusion 49 protruding toward the back surface side of the pedestal 8 inside the slit 63A. I have to. The guide convex portion 49 guided by the slit 63A is also used as a boss for screwing the set screw 69 for fixing the cover member 67.

As shown in FIG. 9, the elastic protrusion 63 has an elastic body 68 of a push spring disposed between the guide protrusion 49 of the pedestal 8 and elastically holds the locking protrusion 66 on both sides. It has an extruded structure. The elastic body 68, which is a push spring, is inside the slit 63A formed in the elastic protrusion 63, and has a guide convex portion 49 integrally formed with the pedestal 8 and an inner surface of the slit 63A. Guided between them, the locking convex portion 66 of the elastic protruding portion 63 is elastically pushed out. The pair of elastic protrusions 63 are urged by the elastic bodies 68 so as to move away from each other when the unlock button 61 is not operated. The elastic protruding portion 63 is brought into a locked state by being guided by the locking portion 62 by the locking convex portion 66 provided at the tip of the elastic protruding portion 63 while being pushed outward by the elastic body 68.

The locking convex portion 66, which is elastically extruded and guided to the locking portion 62, has the facing surface of the tip portion guided to the locking portion 62 as an inclined surface 66A in a state where the pedestal 8 is in a vertical posture. There is. The locking convex portion 66 shown in FIG. 9 has a flat surface on the side facing the inner surface of the pedestal 8 and an inclined surface 66A on the opposite side, which is inclined toward the tip. When the pedestal 8 is folded from the horizontal posture to the vertical posture, the inclined surface 66A slides along the surface of the second link 32 and is smoothly pushed into the locking hole 62A. When guided by the blind hole 62A, it is elastically pushed out by the elastic body 71. Therefore, the seat 8 can be folded in the vertical posture without pressing the unlock button 61, and the locking convex portion 66 can be smoothly guided to the locking portion 62 to lock the seat 8 in the folded position. However, the locking convex portion does not necessarily have an inclined surface, and the pedestal 8 can be folded in a vertical posture in a state where the lock is released by pressing the unlock button.

(Drive mechanism 64)
The drive mechanism 64 moves the pair of elastic protrusions 63 from the locking position to the unlocking position by operating the unlock button 61. The drive mechanism 64 is composed of a convex portion 61A protruding from the lower surface of the unlock button 61 and a slit 63A provided in the elastic protruding portion 63. To be precise, the drive mechanism 64 is composed of an inclined surface 61a formed on the convex portion 61A and an inclined surface 63a formed on the inner surface of the slit 63A facing the inclined surface 61a. The elastic protrusion 63 has a structure in which the convex portion 61A protruding from the lower surface of the lock release button 61 is guided to the slit 63A so that the locked state is released by being operated by the lock release button 61. The slit 63A is provided with an inclined surface 63a on an inner surface facing the inclined surface 61a provided on the convex portion 61A of the unlock button 61, and the inclined surface 61a of the convex portion 61A that moves while the unlock button 61 is pushed down. The inclined surface 63a of the slit 63A is slid along the line so that the pair of elastic protrusions 63 can move in the direction of approaching each other. The pair of elastic protrusions 63 are moved in the direction of approaching each other and moved to the unlocking position while the unlock button 61 is pushed down, and the locking protrusion 66 at the tip is pulled out from the locking hole 62A. The locked state is released. When the unlock button 61 is released, the elastic body 65 pushes it up, and the pair of elastic protrusions 63 are pushed outward by the elastic body 68, so that the locking convex portion 66 moves to the locking position.

The folding chair 7 having the above structure is opened and closed by the following operations.
[Folded state of seat 8]
As shown in FIGS. 1 and 7A, the upper and lower pedestals 30 are in the raised position, and the pedestal 8, the folding legs 9, the first link 31, the second link 32, and the third link 33 are parallel to the support column 5. It is folded in a posture. The support column 5, the folding leg 9, and the second link 32 are guided to the notch 42 of the peripheral wall 41 as shown in FIG. The first link 31 is also folded in parallel with the support column 5. In this state, the folding chair 7 is held in the folded state. When the base frame 1 is moved by the casters 4 or when the folding chair 7 is not used, the folding chair 7 is placed in a posture parallel to the support column 5 in this state.

[When opening the seat 8 and using it as a chair]
The lock release button 61 is pressed to release the lock state of the lock mechanism 60. When the unlock button 61 is pressed, as shown in FIG. 9, the inclined surface 61a of the convex portion 61A slides on the inclined surface 63a formed on the inner surface of the slit 63A of the elastic protrusion 63, and the pair of elastic protrusions Move 63 in a direction that brings them closer to each other. The elastic protruding portions 63 approaching each other pull out the locking convex portion 66 from the locking hole 62A of the second link 32 to release the locked state with the locking portion 62.

After the unlocked state is released by pressing the unlock button 61, the folding leg 9 is tilted from the vertical posture to the horizontal posture as shown by the arrow A in FIG. 7B. When the folding leg 9 is tilted away from the support column 5, the pedestal 8 connected via the first link 31 expands in conjunction with the tilting of the folding leg 9, as shown by the arrow B. Tilt in the direction. Further, the upper and lower bases 30 to which the upper ends of the folding legs 9 are connected descend along the columns 5 as shown by arrows C. Further, as shown by an arrow D in FIG. 7C, the second end portion 8B, which is the tip of the pedestal 8, is lifted and lowered until the upper and lower pedestals 30 come into contact with the pedestal stopper 34 to stop. In this state, the second link 32 limits the opening degree of the folding leg 9 to specify the open leg position of the folding leg 9. Further, as shown by an arrow E in FIG. 7D, the sliding cylinder 51 of the first link 31 is lowered by its own weight along the folding leg 9 and lowered until it comes into contact with the intermediate stopper 35 to stop it. In this state, the pedestal 8 is supported by the first link 31, the folding legs 9, and the second link 32, and is arranged in a horizontal or substantially horizontal posture.

[When closing the pedestal 8 and storing it in the folded state]
As shown by arrow A in FIG. 8A, the link body 50 of the first link 31 is tilted toward the inside of the pedestal 8, and the sliding cylinder 51 rises along the folding leg 9 as shown by arrow B. Let me. Then, as shown by the arrow C in FIG. 8B, the second end portion 8B of the pedestal 8 is lowered to tilt the pedestal 8. The pedestal 8 tilts with the movable end 33A of the third link 33 as a fulcrum, and raises the upper and lower pedestals 30 as shown by an arrow D. The ascending vertical base 30 raises the upper end of the folding leg 9, and in conjunction with this, the folding leg 9 is folded toward the support column 5 as shown by an arrow E. Further, by tilting the pedestal 8 as shown by the arrow F in FIG. 8C, the upper and lower pedestals 30 are raised, and the folding legs 9 are folded in the direction approaching the support column 5 as shown by the arrow G. As shown in FIG. 8D, the pedestal 8, the folding legs 9, the first link 31, the second link 32, and the third link 33 are folded in a posture parallel to the support column 5.

In this state, the pedestal 8 is folded in a vertical posture, and as shown in FIGS. 4 and 9, a pair of columns 5 are housed between the peripheral walls 41 on both sides, and the folding legs 9 and the first The link 31, the second link 32, and the third link 33 are housed between the columns 5. Further, in this state, the locking convex portions 66 of the elastic protruding portions 63 projecting on both sides of the pedestal 8 are locked to the locking portions 62 of the pedestal stopper 34, and the pedestal 8 is in a vertical posture by the locking mechanism 60. Is held in.

(Strut stopper 15)
The strut stopper 15 can use all the mechanisms capable of stopping the expansion and contraction of the strut 5. An example of the strut stopper 15 is shown in FIGS. 10 and 11. The support column stopper 15 in these figures is arranged at the lower end of the drawer rod 5A and is provided with a protruding pin 16 elastically projecting toward the guide cylinder 5B and a protruding pin 16 inserted into the guide cylinder 5B. The locking portion 17 to be locked and the releasing mechanism 18 for forcibly pulling out the protruding pin 16 from the locking portion 17 are provided.

The projecting pin 16 is attached to the lower end of the drawer rod 5A via the elastic member 19 so as to elastically project toward the guide cylinder 5B. The protruding pin 16 is pressed by the elastic member 19 and elastically protrudes from the drawer rod 5A. The locking portion 17 is a through hole or recess into which the protruding pin 16 is inserted. The guide cylinder 5B shown in the figure has a through hole into which the protruding pin 16 is inserted to form a locking portion 17. The structure in which the locking portion 17 is a through hole has a feature that the protruding pin 16 can be projected to the outside of the guide cylinder 5B from here, and the support column 5 can be reliably stopped. This can be used extremely safely, especially when the support column 5 is used instead of a cane, in other words, the body is supported in a posture of putting weight on the grip 6. This is because it is possible to effectively prevent the protruding pin 16 from being suddenly disengaged from the locking portion 17 and pushing the support column 5. Further, even when the entire bag is lifted by holding the grip 6, the support column 5 can be prevented from being pulled out unexpectedly. As described above, the support column stopper 15 capable of reliably fixing the position of the drawer rod 5A has a feature that it can be used extremely safely regardless of whether the grip 6 is in the ascending position or in the descending position. However, the locking portion can also be a recess into which the tip of the protruding pin is inserted.

Although not shown, the locking portion 17 provided on the guide cylinder 5B is locked at a position where the protrusion pin 16 is inserted in the state where the drawer rod 5A is pulled up most, the state where it is pulled up to the middle, and the state where it is most lowered. A unit 17 is provided. When the drawer rod 5A is pulled up most, the protruding pin 16 is inserted into the uppermost locking portion 17, and when the drawer rod 5A is lowered most, the protruding pin 16 is inserted into the lowermost locking portion 17. Further, in a state where the drawer rod 5A is pulled up to the middle, the protruding pin 16 is inserted into the intermediate locking portion 17 to stop the expansion and contraction of the support column 5. As described above, the support column 5 provided with the locking portion 17 in the middle of the guide cylinder 5B has a feature that the drawer rod 5A can be expanded and contracted in a plurality of stages. However, the strut does not necessarily have to have a structure that can be stopped at an intermediate position, and can be stopped at an ascending position and a descending position. Further, the support column 5 is provided with a plurality of locking portions 17 in the middle of the guide cylinder 5B, and the drawer rod 5A pulled up to the middle can be stopped at a plurality of pulling positions. The support column 5 can select the optimum position by gradually raising and lowering the position of the grip 6.

The release mechanism 18 is pushed by a push button 20 provided on the grip 6, a drive rod 21 connected to the push button 20 and moved up and down by the push button 20, and a lower end of the drive rod 21 to project. A rotating piece 22 that rotates in a direction in which the pin 16 is forcibly pulled in is provided.

The push button 20 is arranged at the center of the upper surface of the grip 6 so as to be movable up and down. The push button 20 is connected to the lower surface of the grip 6 via the elastic body 23, and is elastically extruded through the elastic body 23. The push button 20 has a drive rod 21 connected to the lower surface thereof, and when the push button 20 is moved up and down by a finger, the drive rod 21 is driven up and down.

The drive rod 21 is arranged inside the grip 6 and the drawer rod 5A, and is driven up and down by the push button 20 to rotate the rotating piece 22. The drive rod 21 shown in the figure includes a horizontal rod 21A connected to the lower surface of the grip 6 and a vertical rod 21B inserted through the drawer rod 5A. Both ends of the horizontal rod 21A are located above the upper end of the vertical rod 21B, and when the horizontal rod 21A is pressed downward, the vertical rod 21B is pushed downward. The upper end of the vertical rod 21B is inserted through an insertion cap 24 that moves up and down in the drawer rod 5A so that the vertical rod 21B can be accurately moved up and down in the drawer rod 5A. However, both ends of the horizontal rod can also be connected to the upper end of the vertical rod. For example, the drive rod may be a single rod that is bent in a U shape. The lower end of the drive rod 21 extends to the lower end of the drawer rod 5A.

The rotating piece 22 is connected to the lower end of the drawer rod 5A and is pressed by the lower end of the drive rod 21 to rotate in a direction in which the protruding pin 16 is forcibly pulled in. The drawer rod 5A shown in the figure has a guide cap 25 connected to the lower end thereof, and a rotating piece 22 is mounted inside the guide cap 25 so that it can rotate in a vertical plane. The guide cap 25 has an insertion hole 26A through which the drive rod 21 is inserted in the connecting cylinder portion 26 inserted into the drawer rod 5A so that the lower end portion of the drive rod 21 can be moved up and down accurately. One end of the rotating piece 22 is connected to the guide cap 25 via a rotating shaft 27, and pins 22A projecting toward the projecting pin 16 are provided on both sides of the other end. When the rotating piece 22 is pressed by the drive rod 21 and rotates, the tip of the pin 22A is brought into contact with the protrusions 16A provided on both sides of the protrusion pin 16, and the protrusion pin 16 is rotated by the rotating pin 22A. Is pressed to force it to retract. When the pressure of the drive rod 21 is released, the protruding pin 16 is no longer pressed by the pin 22A of the rotating piece 22, and is elastically pushed out by the elastic member 19 to rotate the rotating piece 22 to its original posture.

In the above release mechanism 18, when the push button 20 is pressed, the drive rod 21 is pushed down, and the rotating piece 22 arranged at the lower end of the drive rod 21 is rotated. The rotating piece 22 is moved in the direction of pulling out the protruding pin 16 at the tip of the pin 22A, and the protruding pin 16 is pulled out from the locking portion 17. In this state, the support column stopper 15 is released, and the drawer rod 5A can move up and down inside the guide cylinder 5B. When the push button 20 is released, the protruding pin 16 is pressed by the elastic member 19 so that it can protrude toward the guide cylinder 5B.

The strut stopper 15 pushes the push button 20 of the release mechanism 18 provided on the grip 6 to forcibly pull in the protruding pin 16 to release the strut stopper 15. The strut stopper 15 is released, and the drawer rod 5A is pulled up or lowered. The drawer rod 5A into which the protrusion pin 16 is pulled moves up and down inside the guide cylinder 5B. When the grip 6 is adjusted to a predetermined height after the push button 20 is released, the protruding pin 16 is guided to the locking portion 17, the expansion and contraction of the support column 5 is stopped, and the ascent and descent of the grip 6 are stopped. ..

The strut stopper 15 having the above structure has a simple structure and can stop the strut 5 at a predetermined position. However, the support column stopper is not specified in the above structure. The strut stopper can be any mechanism that can stop the strut at a predetermined position.

(Detachable structure of bag body 2)
The method of mounting the bag body 2 on the base frame 1 will be described below. 1 to 3 are the upper surface of the horizontal base 3, and the bag body 2 is mounted adjacent to the support column 5. The bag body 2 shown in the figure has a structure in which the bag body 2 is attached to the connecting hook 71 provided on the base frame 1 so that the bag body 2 can be attached and detached. Therefore, the bag body 2 shown in FIGS. 1 to 3 has side surfaces facing the support columns of the base frame 1, and is provided with connecting portions 2A into which the connecting hooks 71 are inserted at the four corners of the upper, lower, left, and right sides. The connecting portion 2A shown in the figure is provided by sewing both ends of the band-shaped connecting band to the bag body 2. However, the connecting portion can be of any other structure capable of guiding the connecting hook of the base frame.

The connecting hook 71 is connected to the support column 5. The base frame 1 of FIG. 3 is provided with connecting hooks 71 at both ends of the connecting rod 13 provided at the upper end of the guide cylinder 5B, and is attached to a pair of fixtures 70 slidably provided along the lower portion of the support column 5. A connecting hook 71 is provided. The connecting rod 13 is provided by integrally molding the connecting hook 71 with plastic. The connecting hook 71 provided on the connecting rod 13 is extended upward so as to be inserted into the connecting portion 2A provided on the upper portion of the bag body 2.

The fixture 70 is provided with a connecting hook 71 projecting downward on the front side thereof and a rotary lock piece 72 on the back side thereof. The lock piece 72 can be swiveled up and down about the rotation axis, and when swiveled upward, the locked state is released, and the fixture 70 is in a sliding state in which the fixture 70 can slide up and down along the support column 5. Further, when the lock piece 72 is swiveled downward, the fixture 70 is locked on the support column 5 at that position.

When fixing the bag body 2, the base frame 1 described above moves the lock piece 72 of the fixture 70 upward in a sliding state as shown by the chain line in FIG. In this state, the connecting hook 71 provided on the connecting rod 13 is passed through the connecting portion 2A on the upper side of the bag body 2, and the bottom surface of the bag body 2 is placed on the horizontal base 3. Further, as shown by the solid line in FIG. 3, the fixture 70 is slid downward to pass the hook 71 through the connecting portion 2A on the lower side of the bag body 2. Finally, the lock piece 72 is swiveled downward to lock the fixture 70, and the bag body 2 is fixed to the base frame 1. To separate the bag body 2 from the base frame 1, the procedure is the reverse of the above procedure. However, the connecting structure of the bag body 2 is not limited to the above structure. The base frame 1 can adopt all other structures for detachably connecting the bag body 2.

(Stopper mechanism 80)
Further, in the base frame 1 shown in FIG. 12, the horizontal orientation of the four swingable casters 4 that are rotatable in a horizontal plane fixed to the four corners of the bottom surface of the horizontal base 3 is set in the base frame 1. The stopper mechanism 80 is provided so as to stop the movement of the base frame 1 by stopping in the stop direction at which the movement is stopped.

(Caster 4)
The horizontal base 3 has casters 4 that can swing freely fixed to the four corners. The cross-sectional view of FIG. 13 shows a portion where the casters 4 are connected to the horizontal base 3. In the horizontal base 3 in this figure, the fixing portions 90 connecting the casters 4 are fixed to the four corners. The fixing portion 90 is provided so as to open a cylindrical fitting recess 90A for inserting and fixing the casters 4 downward. Furthermore, the fixing portion 90 is provided with a through hole 90X for allowing the protruding pin 81 of the stopper mechanism 80, which will be described later, to enter and exit.

The swingable caster 4 is provided with a cylindrical foundation base 91 having the same diameter as the fitting recess 90A in order to be fixed to the horizontal base 3, and the foundation base 91 is inserted into the fitting recess 90A to provide an adhesive or the like. It is fixed to the fixing portion 90, that is, to the horizontal base 3. Further, the foundation base 91 is provided with an opening hole 91X for allowing a protruding pin 81 to be inserted into and exiting the through hole 90X of the fixing portion 90. The protruding pin 81 of the stopper mechanism 80, which will be described later, is inserted into the through hole 90X of the fixing portion 90 and the opening hole 91X of the foundation base 91 so as to be able to enter and exit, and stops the caster 4 in the stop direction.

The base 91 of the caster 4 is connected via a vertical shaft 92 and a bearing 93 so that the yoke 94 can rotate in a horizontal plane but cannot be pulled out. The bearing 93 has a plurality of hard balls 93C interposed between the inner ring 93A and the outer ring 93B. The vertical shaft 92 is fixed to the center of the foundation base 91, and the inner ring 93A of the bearing 93 is fixed to the lower part of the vertical shaft 92. The vertical shaft 92 has flanges 92A and 92B at both upper and lower ends, sandwiching the inner ring 93A of the base base 91 and the bearing 93, and fixing the inner ring 93A to the base base 91. The outer ring 93B of the bearing 93 is fixed to the yoke 94, and the yoke 94 is fixed to the horizontal base 3 via the foundation base 91 and the fixing portion 90 so that the yoke 94 can rotate in the horizontal plane via the bearing 93. The foundation base 91 is provided with a connecting opening 91A into which the upper portion of the yoke 94 is rotatably inserted so that the yoke 94 can be rotated in a horizontal plane. The yoke 94 is connected to the base 91 so that it can rotate without contacting the connection opening 91A. The yoke 94 has a cylindrical insertion portion 94A into the connecting opening 91A, and the connecting opening 91A has a cylindrical inner diameter larger than the outer shape of the cylindrical insertion portion 94A.

The yoke 94 is connected to the lower end thereof via a shaft 96 in a horizontal posture so that the wheels 95 can rotate. The outer circumference of the wheel 95 is a rubber-like elastic body so that the wheel 95 can move smoothly on an uneven road surface. The entire wheel 95 is molded with urethane that can be elastically deformed, or urethane or the like that is elastically deformed along the outer peripheral edge is fixed to form a rubber-like elastic body on the outer periphery. The wheels 95 are also connected to the shaft 96 via bearings (not shown) so that they can rotate more smoothly.

The above base frame 1 is in a state of being self-supporting by four casters 4, and is moved by pushing the grip 6 in the longitudinal direction. Further, the stopper mechanism 80 can stop the horizontal direction of the caster 4 that can swing freely in the stop direction, so that the movement of the base frame 1 is stopped.

The stopper mechanism 80 stops the horizontal orientation of the casters 4 in the directions shown in FIGS. 14 to 16 to put the base frame 1 in a stopped state, and the casters 4 can be freely rotated in a horizontal plane. It is in a movable state, that is, a moving state.

The stopper mechanism 80 interlocks the horizontal orientations of the four casters 4 to stop in the stop direction, and switches between a moving state and a stopped state. As shown in FIGS. 1, 2, and 12, the stopper mechanism 80 includes an operation portion 83 provided on the connecting rod 13 of the support column 5, and a lock portion 85 connected to the operation portion 83 by a wire 84. It consists of. When the user operates the operation unit 83, the lock unit 85 stops the direction of the caster 4 in the stop direction to bring it into a stopped state. Further, the operation unit 83 can be operated to switch to the moving state.

The operation unit 83 pulls the wire 84 to stop the direction of the caster 4 in the stop direction to put it in a stopped state, and puts the caster 4 in a moving state without pulling the wire 84. The wire 84 is inserted inside the wire tube 84A, and one end is connected to the operation portion 83 and the other end is connected to the slide block (not shown) of the lock portion 85. The wire tube 84A extends from the connecting rod 13 to the horizontal base 3 so that the internal wire 84 can smoothly reciprocate. The wire 84 transmits a traction force to the slide block when the operation unit 83 is slid in the pulling direction. On the contrary, the wire 84 returns the slide block when the operation unit 83 is slid in the return direction, or returns the operation unit 83 when the slide block is urged in the return direction.

As shown in FIG. 12, the lock portion 85 is arranged on the lower surface of the horizontal table 3 and is reciprocated by a wire 84 (not shown), and the yoke 94 of the caster 4 is reciprocated by the reciprocating motion of the slide block. It is provided with a protruding pin 81 that goes in and out toward.

The slide block reciprocates on the lower surface of the horizontal base 3 to move protruding pins 81 arranged on both sides of the slide block in and out toward the yoke 94 of the caster 4. One end of the wire 84 is connected to the slide block, and the slide block is driven by the wire 84 and moved in the reciprocating direction. When the slide block is pulled by a wire, it slides in a direction that causes the protrusion pin 81 to protrude, and conversely, the slide block is pushed by the wire 84 or via an elastic body that urges the slide block in the opposite direction. Slide 81 in the direction of retracting.

The protruding pin 81 is moved in and out toward the yoke 94 of the caster 4, more precisely, toward the vertical axis 92, which is the center of the yoke, to stop the yoke 94 of the caster 4 in the stop direction, or The yoke 94 is in a moving state without stopping. The protruding pin 81 has a rod portion penetrating the fixing portion 90 and the foundation base 91 pushed out toward the yoke 94 of the caster 4, and the tip portion is inserted into the locking recess 82 provided in the yoke 94. The yoke 94 is stopped in the stop direction. When the rod portion is retracted and the tip portion is pulled out from the locking recess 82 of the yoke 94, the yoke 94 of the caster 4 is in a state where it can freely rotate without being stopped.

The yoke 94 of the caster 4 is provided with a locking recess 82 on the outer peripheral surface into which the tip of the protruding pin 81 is inserted. The locking recess 82 is provided at a position facing the tip of the rod portion, and has a depth and shape capable of guiding the tip portion of the rod portion and preventing the rotation of the yoke 94. The casters 4 at the four corners are provided with locking recesses 82 in the yokes 94 of each caster 4 so that the yokes 94 can be stopped in the stop directions shown in FIGS. 14 to 16. The yoke 94 in the figure is provided with two locking recesses 82 located at both ends of the diameter of the yoke 94 so that the yoke 94 can be stopped in two stop directions having different directions by 180 degrees. When the casters 4 rotate half a turn, the yoke 94 can guide the tip of the protruding pin 81 to any of the locking recesses 82, so that the rotation of the casters 4 can be stopped quickly. However, the caster 4 does not necessarily have to be provided with two locking recesses, and may be provided with one locking recess so that the caster 4 can be stopped in one stop direction.

The stopper mechanism 80 stops the movement of the base frame 1 with the stop directions of the four swingable casters 4 as the following directions (A) or (B).

(A) The stop direction of the four casters 4 is substantially parallel to any one side of the quadrangle whose four corners are the connecting positions of the four casters 4, and the horizontal orientation of the casters 4 arranged next to each other. Are orthogonal to each other, and the horizontal directions of the pair of casters 4 diagonal to each other are parallel to each other.

The above state is shown in the schematic bottom view of FIG. In this stopped state, the four casters 4 are oriented in the directions orthogonal to each other. Therefore, when the base frame 1 attempts to move in the direction indicated by the arrow A, the wheels 95a and the wheels orthogonal to the moving direction are used. 95c stops moving. Further, when trying to move in the direction indicated by the arrow B, the wheels 95b and the wheels 95d orthogonal to the moving direction stop moving. Further, when the base frame 1 is about to rotate, all the wheels 95 stop rotating.

(B) A pair of casters 4 in which the stop directions of the four casters 4 are substantially parallel to one side of a quadrangle whose four corners are the connecting positions of the four casters 4 and are diagonal to each other. The directions in which the directions are orthogonal to each other.

The above state is shown in the schematic bottom views of FIGS. 15 and 16. In this stopped state, the four casters 4 are oriented so that those located diagonally to each other are orthogonal to each other. Therefore, when the base frame 1 of FIG. 15 is going to move in the direction indicated by the arrow A, when the wheels 95c and the wheels 95d orthogonal to the moving direction stop moving and are going to move in the direction indicated by the arrow B. The wheels 95a and the wheels 95b orthogonal to the moving direction stop moving. Further, when the base frame 1 is about to rotate, the wheels 95a and the wheels 95b stop rotating. When the base frame 1 of FIG. 16 is going to move in the direction indicated by the arrow A, the wheels 95b and the wheels 95c orthogonal to the moving direction stop moving, and when they are going to move in the direction indicated by the arrow B, Wheels 95a and 95d orthogonal to the moving direction stop moving. Further, when the base frame 1 is about to rotate, the wheels 95b and the wheels 95c stop rotating.

The stop directions of the casters 4 shown in FIGS. 14 to 16 are parallel to any one side of the quadrangle whose four corners are the connecting positions of the four casters 4. However, the base frame 1 may have the stop directions of the four casters 4 slightly angled with respect to any one side of the quadrangle. The angle between the stop direction of the casters 4 and any one side of the quadrangle of the base frame 1 can be 30 degrees or less, preferably 15 degrees or less.

The bag having the folding chair of the present invention and the base frame constituting the bag can be suitably used as a carrying case for travel, business, shopping, etc., and further as a trolley for carrying luggage.

1 ... Base frame 2 ... Bag body 2A ... Connecting part 3 ... Horizontal base 4 ... Caster 5 ... Support 5A ... Drawer rod 5B ... Guide cylinder 6 ... Grip 7 ... Folding chair 8 ... Seat 8A ... First end 8B ... Second end 9 ... Folding leg 11 ... Support 12 ... Protruding 13 ... Connecting rod 14 ... Insertion gap 15 ... Strut stopper 16 ... Protruding pin 16A ... Protruding 17 ... Locking 18 ... Release mechanism 19 ... Elastic Member 20 ... Push button 21 ... Drive rod 21A ... Horizontal rod 21B ... Vertical rod 22 ... Rotating piece 22A ... Pin 23 ... Elastic body 24 ... Insertion cap 25 ... Guide cap 26 ... Connecting cylinder 26A ... Insertion hole 27 ... Rotating shaft 28 ... Reinforcing rib 29 ... Through hole 30 ... Upper and lower base 31 ... First link 31A ... Movable end 31B ... Fixed end 32 ... Second link 32A ... Movable end 32B ... Fixed end 33 ... Third link 33A ... Movable end 33B ... Fixed End 34 ... Seat stopper 35 ... Intermediate stopper 36 ... Tilt shaft 37 ... Metal pipe 38 ... Connecting member 38A ... Leg 38B ... Non-contact recess 39 ... Fixing member 40 ... Seat plate 40A ... Through hole 41 ... Peripheral wall 42 ... Notch Part 42A ... First notch 42B ... Second notch 43 ... Seat cover 44 ... Bearing 45 ... Fixed rib 46 ... Bearing rib 47 ... Storage 48 ... Rib 49 ... Guide convex 50 ... Link body 51 ... Sliding Cylinder 52 ... Peripheral wall 53 ... Rib 54 ... Rotating shaft 55 ... Rotating shaft 56 ... Elastic body 57 ... Connecting tool 58 ... Connecting tool 60 ... Locking mechanism 61 ... Unlocking button 61A ... Convex portion 61a ... Inclined surface 61b ... Flange portion 62 ... Locking portion 62A ... Locking hole 63 ... Elastic protrusion 63A ... Slit 63a ... Inclined surface 63B ... Recessed portion 64 ... Drive mechanism 65 ... Elastic body 66 ... Locking convex portion 66A ... Inclined surface 67 ... Cover member 68 ... Elastic Body 69 ... Set screw 70 ... Fixing tool 71 ... Connecting hook 72 ... Lock piece 80 ... Stopper mechanism 81 ... Protruding pin 82 ... Locking recess 83 ... Operating unit 84 ... Wire 84A ... Wire tube 85 ... Locking part 90 ... Fixing part 90A ... Fitting recess 90X ... Through hole 91 ... Base base 91A ... Connecting opening 91X ... Opening hole 92 ... Vertical axis 92A ... Flange portion 92B ... Flange portion 93 ... Bearing 93A ... Inner ring 93B ... Outer ring 93C ... Rigid ball 94 ... York 94A ... Insertion Part 95 ... Wheel 95a ... Wheel 95b ... Wheel 95c ... Wheel 95d ... Wheel 96 ... Shaft 190 ... Chair 191 ... Seat 192 ... Folding leg 195 ... Support 201 ... Horizontal stand 205 ... Support 231 ... Seat 232 ... Folding leg 233 ... 1st link 234 ... 2nd link 237 ... Seat stopper 239 ... Elastic rod 240 ... Connecting part

Claims (12)

With the bag body,
A bag provided with a base frame on which the bag body can be mounted and travelable.
The base frame is
A horizontal base with a running caster fixed on the bottom and a bag body placed on top.
A pair of columns connecting the lower end to the horizontal table and
It is equipped with a folding chair that is foldably connected to the support.
The folding chair
A pedestal that is connected to the support column so that it can be folded from a horizontal position to a vertical position and can be moved up and down.
A pedestal stopper that limits the descent position of the pedestal,
A folding leg that is connected to the first end of the pedestal on the support column side so that the upper end can be tilted.
With one end as a fixed end, it is tiltably connected to the second end of the pedestal facing the first end, and the other end is a movable end so that it can move up and down along the folding leg. The first link connected to the folding leg and
An intermediate stopper fixed to the intermediate portion of the folding leg and limiting the descending position of the movable end of the first link,
A second link that limits the opening of the folding leg by connecting one end to the middle of the folding leg and the other end to the lower end of the column or the horizontal base so that it can tilt .
A third link formed by connecting the pedestal and the support column,
With
The pedestal, the folding legs, the first link, and the second link are tilted so as to be in a vertical posture parallel to the stanchion, and the connecting portion between the pedestal and the stanchion is raised. , The folding chair is folded,
When the folding leg is opened, the pedestal is opened horizontally from the vertical posture, the connecting portion between the pedestal and the support column is lowered and stopped by the pedestal stopper, and the first The folding chair is deployed with the movable end of the link lowered and stopped at the intermediate stopper, and the second link limits the opening degree of the folding leg, and the first link, the folding leg, and the folding leg are deployed. have a foldable chair that the seat base via the second link is then to be held in a horizontal position,
The third link is arranged so that one end thereof is connected to the first end portion of the pedestal and the other end is connected to an intermediate portion of the support column so that the third link can rotate in a vertical plane.
When the pedestal in the horizontal posture is in the vertical posture, the first end is pushed up while tilting so that the third link is in the vertical posture, and the connecting portion between the pedestal and the support column is held. bag to have a composed so as to increase folding chairs. A bag having a folding chair according to claim 1.
The first link is rotatably connected to a sliding cylinder that slides up and down along the folding leg, one end to the second end of the pedestal, and the other end to the sliding cylinder. Equipped with a linked body
A bag having a folding chair having a sliding cylinder as a movable end of the first link and lowered by its own weight along the folding legs when the folding chair is unfolded. A bag having a folding chair according to claim 1 or 2.
The pedestal is provided with a seating surface plate that serves as a seating surface in a horizontal posture, the seating surface plate is made substantially rectangular, and the width of the seating surface plate is made larger than the distance between the pair of columns. A bag with a folding chair. A bag having a folding chair according to claim 3.
The pedestal is provided with a peripheral wall protruding downward in a horizontal posture along the periphery of the pedestal plate, and is formed along the first end portion and the second end portion of the pedestal. A notch for guiding the support column is formed on the peripheral wall.
In the vertical posture of the pedestal, the peripheral walls on both sides of the pedestal are arranged outside the pair of columns, the columns are guided to the notch, and a part of the pair of columns is inside the pedestal. A bag with a folding chair that is stored in. A bag having a folding chair according to any one of claims 1 to 4 .
An elastic body is provided at a connecting portion between the pedestal and the first link, and the elastic body separates the first link from the pedestal with respect to the movable end of the first link from the pedestal. A bag with a folding chair that is urged to. A bag having a folding chair according to claim 5 .
The elastic body is a coil spring inserted through a rotating shaft that connects the fixed end of the first link to the pedestal. One end of the coil spring is extended in the tangential direction and connected to the pedestal, and the other end is tangential. A bag having a folding chair that extends in the direction and is connected to the first link. A bag having a folding chair according to any one of claims 1 to 6 .
The pedestal is provided with a lock mechanism for locking the pedestal in a vertical posture, and the lock mechanism is a foldable pedestal provided with an unlock button on the tip side of the pedestal to release the locked state when tilting from the vertical posture to the horizontal posture. A bag with a chair. A bag having a folding chair according to claim 7 .
The locking mechanism is provided on the second link, an elastic protruding portion arranged inside the pedestal and elastically projecting to the locking position of the locking portion, and the elastic protruding portion. A bag having a folding chair provided with a drive mechanism for moving the elastic protrusion from the locking position to the unlocking position by connecting the to the unlocking button. A bag having a folding chair according to any one of claims 1 to 8 .
A bag having a folding chair in which an upper and lower pedestal is connected to the support column so that it can be moved up and down, and the pedestal and the folding leg are connected to the upper and lower pedestal so as to be foldable. A bag having a folding chair according to any one of claims 1 to 9 .
A bag having a folding chair in which one end of the second link is connected to the intermediate stopper provided on the folding leg. A bag having a folding chair according to any one of claims 1 to 10 .
The horizontal base has a substantially quadrangular bottom view, and four swingable casters that can rotate in a horizontal plane are fixed to the four corners of the bottom surface, and the base frame is self-supporting with the four casters. In addition to being in a state, the base frame can be moved so that the casters can be rotated in a horizontal plane.
Further, the four casters are provided with a stopper mechanism for stopping the movement of the base frame by stopping the horizontal orientation of the four casters in the stop direction for stopping the movement of the horizontal base.
A bag having a folding chair in which the stopper mechanism holds the horizontal orientations of the four casters in the stop direction and stops the movement of the base frame. It is a base frame that can run with the bag body mounted.
A horizontal base that can mount the bag body on the bottom by fixing the running casters on the bottom,
A pair of columns connecting the lower end to the horizontal table and
It is equipped with a folding chair that is foldably connected to the support.
The folding chair
A pedestal that is connected to the support column so that it can be folded from a horizontal position to a vertical position and can be moved up and down.
A pedestal stopper that limits the descent position of the pedestal,
A folding leg that is connected to the first end of the pedestal on the support column side so that the upper end can be tilted.
With one end as a fixed end, it is tiltably connected to the second end of the pedestal facing the first end, and the other end is a movable end so that it can move up and down along the folding leg. The first link connected to the folding leg and
An intermediate stopper fixed to the intermediate portion of the folding leg and limiting the descending position of the movable end of the first link,
A second link that limits the opening of the folding leg by connecting one end to the middle of the folding leg and the other end to the horizontal base or the lower end of the column so that it can tilt .
A third link formed by connecting the pedestal and the support column,
With
The pedestal, the folding legs, the first link, and the second link are tilted so as to be in a vertical posture parallel to the stanchion, and the connecting portion between the pedestal and the stanchion is raised. , The folding chair is folded,
When the folding leg is opened, the pedestal is opened horizontally from the vertical posture, the connecting portion between the pedestal and the support column is lowered and stopped by the pedestal stopper, and the first The folding chair is deployed with the movable end of the link lowered and stopped at the intermediate stopper, and the second link limits the opening degree of the folding leg, and the first link, the folding leg, and the folding leg are deployed. The pedestal is held in a horizontal position via the second link .
The third link is arranged so that one end thereof is connected to the first end portion of the pedestal and the other end is connected to an intermediate portion of the support column so that the third link can rotate in a vertical plane.
When the pedestal in the horizontal posture is in the vertical posture, the first end is pushed up while tilting so that the third link is in the vertical posture, and the connecting portion between the pedestal and the support column is held. A base frame with a folding chair that is designed to be raised .

Images