JP2014230677A - Folding chair with shelf - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding chair with a shelf having a simple structure in which a shelf is folded or expanded with a leg folding operation, and in which the shelf can be folded in a stable state so that the shelf is not loose when legs are in a folded state.SOLUTION: A front slide groove 14 and a rear slide groove 15 extending in a forward/rearward direction are provided on both sides of a shelf 12. A front locking member 20 that slidably engages with the front slide groove is provided inside a front leg 1. A rear locking member 21 that slidably engages with the rear slide groove is provided inside a rear leg 4. With a leg folding operation, the shelf 12 moves guided by the locking members and slide grooves, and in a folded state, erects in a state that it is supported by the front locking member and the rear locking member.

Description

  The present invention relates to a folding chair with a shelf provided with a shelf on which luggage can be placed below a seat.

  2. Description of the Related Art Conventionally, folding chairs are known in which a shelf is provided below a seat so that luggage can be placed (see, for example, Patent Documents 1 and 2). The shelf of the chair described in the above-mentioned patent document 1 has both ends of the rear frame of the shelf protruding left and right, and its tip is pivotally attached to the inside of the left and right pipes of the rear legs. Further, a piece is rotatably supported by the rotating lever, and the left and right side frame rods of the shelf are inserted into holes of the piece. When the chair is folded, the shelf rotates around the rear frame cage, and the pivot lever and the piece rotate, so that the left and right side frame cages slide in the hole of the piece, and the legs are completely When folded, the shelf is configured to be folded vertically on the back side of the seat. In this folded state, the shelf is in a state of standing vertically with the pivoting part and the piece to the rear leg, so that it is supported only by the lower end part as a whole, and the upper end part is almost It is free. Therefore, in the case of this chair, the support structure of the shelf is complicated, and the shelf is not stable in the folded state, and it is difficult to handle it with a dangle. Moreover, the chair of patent document 2 divides a shelf into two front and back, forms a front shelf and a rear shelf, connects the inner end of this front shelf and a rear shelf so that folding is possible, The outer end is pivotally attached to the front and rear legs. With this configuration, when the chair is folded, the shelf is folded at the same time. Therefore, the mounting structure of the shelf and the leg is not unstable like the chair of Patent Document 1, but the configuration of the shelf itself is complicated and the chair is opened. In the leg state, there is a problem that the shelf itself is unstable when a load is applied to the shelf.

Japanese Utility Model Publication No. 52-11607 (claims of utility model claims, drawings) Japanese Utility Model Publication No. 56-32132 (utility model registration request, drawings)

  The problem to be solved by the present invention is that, as described above, in the folding chair in which the shelf is folded or unfolded in accordance with the leg folding operation, the configuration of the shelf itself is simple, and the legs are folded. To provide a folding chair with a shelf that can be folded in a stable state so that the shelf does not dangle.

  According to the present invention, in a folding chair in which a front leg, a rear leg, and a seat frame are foldably connected, a shelf having a mounting surface having a width extending between the front leg and the rear leg in an open leg state is formed. A front slide groove and a rear slide groove extending in the front-rear direction are provided on the side surface of the front side, a front locking member and a rear locking member are provided on the inner side surfaces of the front leg and the rear leg, and the front locking member slides on the front slide groove. A folding chair with a shelf is provided, which is inserted in such a manner that the rear locking member is slidably inserted into the rear slide groove, and the above-mentioned problems are solved.

  Further, according to the present invention, the front slide groove and the rear slide groove of the shelf are provided separately on the upper and lower sides with the placement surface of the shelf interposed therebetween, and the front locking member is a front hook provided between the left and right front legs. The folding chair with ends is provided as a rear hook provided between the left and right rear legs.

  The present invention is a folding chair configured as described above and having a front leg, a rear leg, and a seat frame connected to each other so that the front leg, the rear leg, and the seat frame are foldable. Forming a front slide groove and a rear slide groove extending in the front-rear direction on the side surface of the shelf, providing a front locking member and a rear locking member on the inner side surface of the front leg and the rear leg, Since the rear locking member is slidably inserted into the slide groove and the rear locking member is slidably inserted into the slide groove, the shelf is engaged with the front locking member inserted into each slide groove and the rear locking in the open leg state. Since the member is positioned on the outer end side of each slide groove, the member is supported almost horizontally, and the load of the load placed on the placement surface can be firmly supported. When the chair is folded, the front locking member and the rear locking member inserted into the slide grooves are positioned on the inner end side of the slide grooves, and the shelf is supported by the locking member at the center. Therefore, as compared with the conventional case where the shelf raised upright is held only on the lower end side, the shelf is held in a stable state and does not rub and is easy to handle. Moreover, since the configuration is simple, it can be obtained economically.

  In addition, if the front slide groove and the rear slide groove of the shelf are provided separately above and below the shelf placement surface, when the chair is folded, the shelf is positioned on both sides of the placement surface. As a result, the shelf is supported from both sides and held in a more stable state. Furthermore, if a front heel is provided between the left and right front legs as the front locking member, a rear heel is provided between the left and right rear legs as the rear locking member, and the front and rear heels are respectively inserted into the slide grooves, The structure of the stop member is simplified and the load can be reliably carried.

The perspective view of the use condition which shows one Example of this invention. Sectional drawing of use condition. The front view of a folded state. Sectional drawing of a folded state. The perspective view which shows one Example of a shelf. Explanatory drawing in the middle of folding. Explanatory drawing of the state further folded from the state shown in FIG. Explanatory drawing of the state further folded from the state shown in FIG.

  The folding chair with a shelf of the present invention can be applied to any type of folding chair in which the front legs, the rear legs, and the seat frame are foldably connected. An embodiment to which the present invention is applied will be described. 1 to 4, the folding chair of the present invention has a pipe material bent to form a left and right front leg 1 and a back frame 2 in series, and the back frame 2 is provided with a back 3. The left and right rear legs 4 are formed by bending a pipe material into a substantially U shape, and a cylinder portion 5 is provided at the upper end. A rod 7 pivotally attached to the backrest frame 2 is inserted into the cylinder portion 5. . The seat frame 9 provided with the seat portion 8 on the upper surface has an intermediate portion pivotally attached to the intermediate portion of the front leg 1 and a rear end portion pivotally attached to the rear leg 4.

  When the front end of the seat frame 9 is lifted and rotated by the above configuration, the rod 7 is pulled out from the cylinder portion 5 and the rear leg 4 and the front leg 1 approach each other and the seat frame 9 is completely rotated. The front leg 1 and the rear leg 4 are folded (FIG. 4). When the seat frame 9 is rotated in the reverse direction from the state shown in FIG. 4, the rod 7 enters the cylinder portion 5 and the front legs 1 and the rear legs 4 are opened as shown in FIG.

  A shelf 12 is provided between the front leg and the rear leg. The shelf 12 can be made of a plastic material, a wood material, a metal plate material, or any other appropriate material, but in the embodiment shown in the figure, it is made of a metal round bar material as shown in FIG. In addition, a net-shelf-shaped mounting surface 13 having a width extending between the front leg 1 and the rear leg 4 in the open leg state is provided. A front slide groove 14 and a rear slide groove 15 extending in the front-rear direction are provided on the side surface of the shelf 12. In FIG. 5, a grid-like mesh is formed by a vertical frame line 16 extending in the front-rear direction and a horizontal frame line 17 extending in the left-right direction, and the two horizontal frames in front of the horizontal frame line 17 extending in the left-right direction. In FIG. 5, the line 17 a is fixed to the upper surface of the vertical frame line 16, and the rear two horizontal frame lines 17 b are fixed to the lower surface of the vertical frame line 16. Then, the front end of the front horizontal frame line 17a is connected to the vertical frame line 16 via a groove 18a that forms a front slide groove 14 via a downwardly bent portion 18a, and the rear horizontal frame line 17b. Is connected to the vertical frame line 16 via a groove frame line 19b that forms a rear slide groove 15 through a bent portion 18b directed upward.

  In the embodiment shown in FIG. 5, the slide grooves 14 and 15 formed by the vertical frame line 16, the groove frame line 19, and the bent portion 18 are separated into an upper surface side and a lower surface side with the mounting surface 13 of the shelf 12 interposed therebetween. Is provided. That is, in FIG. 5, the front slide groove 14 is formed on the lower side and the rear slide groove 15 is formed on the upper side. Depending on the folding structure of the front leg, rear leg and seat frame, the upper and lower sides of the slide groove are reversed, the front slide groove and the rear slide groove are located on the same side of the mounting surface, or the front slide groove And a rear slide groove can be formed in series. In addition, a member for forming the placement surface and a groove forming member (not shown) for forming the slide groove may be separately provided according to the configuration of the shelf and attached to the side surface of the placement surface (not shown).

  A front locking member 20 that is slidably inserted into the front slide groove 14 is provided on the inner surface of the front leg 1, and is slidably inserted into the rear slide groove 15 on the inner surface of the rear leg 4. A rear locking member 21 is provided. In the embodiment shown in FIG. 1, the front locking member 20 is one front rod 22 provided between the left and right front legs 1, and the rear locking member 21 is one piece provided between the left and right rear legs 4. It consists of a rear cage 23. Each of the front bar 22 and the rear bar 23 is composed of one metal round bar, but is not composed of one round bar, and has a length that can be surely inserted into the slide groove. In addition, protrusions (not shown) such as short pins having sufficient strength to support the load can be provided on the inner side of the legs to form locking members.

  1 and 2, the shelf 12 has the front locking member 20 in the front slide groove in a state where the front leg 1 and the rear leg 4 can be opened and seated on the seat portion 8 as shown in FIGS. 14 is in contact with the bent portion 18a on the outer end side, and the rear locking member 12 is in contact with the bent portion 18b on the outer end side of the rear slide groove 15 and is positioned in a substantially horizontal state. Therefore, when an article is placed on the mounting surface 13, the front and rear locking members 20 and 21 are firmly held, and the shelf 12 does not tilt or move back and forth.

  6 to 8, when the front end of the seat frame 9 is rotated upward, the front legs 1 and the rear legs 4 are gradually folded, and the shelf 12 is connected to the locking members 20 and 21 along the way. The slide grooves 14, 15 are relatively slid and move back and forth while standing as shown in FIG. 4 and are folded below the seat portion 8. At this time, in the folded state, the shelf 12 can be formed in such a size that the front end of the shelf 12 protrudes to the back side of the seat frame 9, but is preferably formed to a size that does not protrude from the seat frame 9. When the chairs are stacked, or when the chairs are stacked or lined up in a folded state, there is no protrusion on the back side of the seat frame 9, so that the handling is easy and it is more preferable.

  As shown in FIG. 4, in the folded state, the shelf 12 has the rear locking member 21 in contact with the bent portion 18 b on the inner end side of the rear slide groove 15 and the front locking member 20 is engaged with the front slide groove 14. So they are stable. Furthermore, if the slide grooves 14 and 15 are arranged separately on the upper and lower surfaces of the mounting surface 13 of the shelf 12, as shown in the figure, the shelf 12 standing in a folded state is supported from both sides. Therefore, the shelf can be held in a very stable state, and there is no sense of instability such as blurring.

  When the seat frame 9 is rotated in the opposite direction from the state shown in FIG. 4, the front legs and the rear legs approach the open leg state as shown in FIGS. 8, 7, and 6, and the shelf frame as shown in FIG. 12 is stationary between the front leg 1 and the rear leg 4 in a deployed state. At the time of this operation, contrary to the above, each of the locking members slides on each of the slide grooves and is positioned on the outer end side, and the shelf 12 can be positioned in a substantially horizontal state.

DESCRIPTION OF SYMBOLS 1 Front leg 4 Rear leg 8 Seat part 9 Seat frame 12 Shelf 13 Placement surface 14 Front slide groove 15 Rear slide groove 20 Front locking member 21 Rear locking member 22 Front hook 23 Rear hook

Claims (6)

  In a folding chair in which the front legs, the rear legs, and the seat frame are foldably connected, a shelf having a mounting surface that is wide between the front legs and the rear legs in an open leg state is formed, and the side of the shelf is formed in the front-rear direction. A front slide groove and a rear slide groove extending are provided, a front locking member and a rear locking member are provided on the inner surfaces of the front leg and the rear leg, and the front locking member is slidably inserted into the front slide groove and A folding chair with a shelf, wherein a rear locking member is slidably inserted into the rear slide groove.   The folding chair with a shelf according to claim 1, wherein the front slide groove and the rear slide groove of the shelf are provided separately above and below across the placement surface of the shelf.   The folding chair with a shelf according to claim 1 or 2, wherein the front locking member is a front wing provided between the left and right front legs, and the rear locking member is a rear heel provided between the left and right rear legs.   The shelf is formed in a lattice mesh shape by a vertical frame line extending in the front-rear direction and a horizontal frame line extending in the left-right direction, and the two front horizontal frame lines are fixed to the upper surface of the vertical frame line, and the rear two The horizontal frame line of the book is fixed to the lower surface of the vertical frame line, and the tip of the front horizontal frame line is communicated with a groove frame line that forms a front slide groove between the vertical frame line and the vertical frame line through a downwardly bent portion. The tip of the rear horizontal frame line is communicated with a groove frame line that forms a rear slide groove with the vertical frame line via an upwardly bent portion. Folding chair with shelf.   With the front and rear legs open, the front locking member abuts on the bent portion on the outer end side of the front slide groove, and the rear locking member contacts the bent portion on the outer end side of the rear slide groove. The folding chair with a shelf according to claim 4, which is in contact.   The folding chair with a shelf according to claim 4, wherein the rear locking member is in contact with a bent portion on an inner end side of the rear slide groove in a state where the front leg and the rear leg are folded.

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