JP2007275091A - Base having leg portion with combined joint structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a height-adjustable base which uses X-shaped crossing legs and enables the crossing legs to be turned without the use of a pivotally attached member such as a pin. <P>SOLUTION: A pair of almost flat leg pieces is fitted into each other via a plurality of inner groove parts provided in the central parts of the leg pieces, and joined together in a combined state, so as to serve as leg portions crossing each other in an X shape. The crossing legs are bent upward and downward at predetermined positions from both ends of them, respectively. A plurality of V-shaped grooves, which are formed orthogonally to the plurality of inner groove parts provided in the central parts of the leg pieces, and a bent corner part of the leg piece are engaged with each other, so as to hold the leg parts crossing each other in the X shape, and the height of the leg part can be adjusted between a plurality of stages. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pedestal, and more particularly to a pedestal that is processed from a single plate material and has leg portions of a hand structure that intersects with an X shape.

  Conventionally, various pedestals or chairs that can be folded have been proposed. For example, a pair of X-shaped legs pivoted at the intersection point are joined by a horizontal axis arranged in a plurality of stages at a required interval between the intersection point and the tip, and the horizontal axis at the same stage when the legs are opened A folding chair in which a seat is formed by winding a cloth in a spiral shape (see Patent Document 1). A folding chair with adjustable seat height is also proposed, in which the upper end of the X-shaped leg with the support shaft removed from the center of the leg length is detachably fitted into the recessed groove of the frame provided on the back side of the seat. (See Patent Document 2).

  However, both of Patent Documents 1 and 2 above require a pivoting member that pivots an X-shaped leg, and when the leg is folded, both ends of the leg protrude and the portability is difficult. It was. In addition, the height adjustment is changed up and down around the support shaft, which does not satisfy the various demands of users.

In view of this, there has been proposed a seat chair composed of an assembly in which a plurality of pairs of combinations combined in an X shape are connected so as to be freely folded up and down (see Patent Document 3).
Japanese Utility Model Publication No. 60-128554 Japanese Utility Model Publication No. 55-153957 Japanese Patent Application No. 2002-1859

  However, the seat chair proposed in Patent Document 3 is provided with a plurality of pairs of combined bodies combined in an X-shape so that it can be folded without using a pivoting member, thereby improving portability. However, it was necessary to prepare a pair of combinations separately and assemble them with an adhesive or the like. In addition, there is a problem that the height cannot be adjusted when using.

  The present invention has been made in view of the above-described problems, and provides a pedestal that has a leg portion of a crossed structure that can be processed from a single plate material and intersects in an X shape without requiring a pivoting member. To do.

  For this reason, the pedestal of the present invention is a pedestal having legs that intersect in an X shape, and a pair of substantially flat leg pieces are fitted into each other by a plurality of inner grooves provided in the center thereof, and are assembled into a hand shape. The first feature is that it is a leg portion of a hand construction that intersects with an X-shape.

  Further, the pair of leg pieces has a second feature in that they are bent upward and downward at predetermined positions from both ends thereof.

  A plurality of V-grooves formed perpendicular to a plurality of inner grooves provided in the center of the leg piece and a bent corner of the leg piece engage with each other and intersect the X shape. A third feature is that the leg is held and the height of the leg can be adjusted in a plurality of stages.

  According to the pedestal according to the present invention, a pair of substantially flat leg pieces are inserted into each other by a plurality of inner groove portions provided in the central portion thereof to form a hand shape, and a hand structure that intersects the X-shape. Therefore, there is no need for a pivoting member pivoted to the X shape.

  Further, since the plurality of V-grooves formed orthogonal to the plurality of inner groove portions provided in the center portion of the leg piece and the bent corner portion of the leg piece engage with each other, the height of the leg portion is set to be plural. It has an excellent effect that it can be adjusted to the stage.

  Further, since the pair of long plate leg pieces are bent upward and downward at predetermined positions from both ends thereof, when the long plate leg pieces are folded, the both end portions do not protrude and the portability is excellent. Has an effect.

  Hereinafter, the pedestal of the present invention will be described based on examples, but it goes without saying that the present invention is not limited to the examples. 1 is a perspective view showing an embodiment of a pedestal of the present invention, FIG. 2 is a side view showing a folded state of the pedestal of the present invention, FIG. 3 is a plan view of FIG. 2, FIG. 4, FIG. FIG. 7 is an explanatory side view showing the height adjustment of the pedestal of the present invention, and FIG. 7 is an explanatory view showing a production process of the pedestal of the present invention.

  As shown in FIG. 1, the pedestal 1 of the present invention includes a pair of leg pieces 2, 3 and a floor plate 4 attached to one end of the leg piece 2 via a hinge 7. 3 cross each in an X shape to form a leg portion of a hand-assembled structure, and the floor plate 4 is placed upward. Then, as shown in FIG. 2, when the upper end portion of the leg piece 2 is tilted in the direction of the hinge 7, the floor plate 4 and the leg pieces 2 and 3 are folded together to be portable. The leg pieces 2 and 3 and the floor board 4 are all made of wood or plastic.

  As shown in FIG. 1 or FIG. 3, inner grooves 5 are formed in the central portions of the leg pieces 2 and 3 by processing described later, and the leg pieces 2 and 3 are rotated via the inner grooves 5. The X-shaped leg portion is configured without any need for a support member. Further, three V-grooves 6 are formed in the vicinity of the inner groove 5 of the leg piece 2 at predetermined intervals in a direction perpendicular to the inner groove 5, and the corners of the long plate leg piece 3 are formed as shown in FIGS. The height of the base 1 can be adjusted by engaging with the portion 8. Although three V-grooves 6 are formed in this embodiment, it is of course not limited to three, and it is not necessary to have V-grooves as long as the shape engages with the corner 8. .

  The leg pieces 2 and 3 are formed to be bent upward and downward at positions approximately 1/3 from both ends, respectively, and when the above-mentioned floor plate 4 and the leg pieces 2 and 3 are folded together. Both end parts do not protrude and have excellent portability.

  According to the pedestal having the above-described configuration, the pair of leg pieces 2 and 3 intersects in an X shape to form a leg portion having a hand structure, and the pedestal 4 is placed on the upper side to constitute the pedestal. It can be used as a footrest or chair when playing, and the height can be adjusted according to the user's request using the V-groove 6 provided on the leg piece 2 and the corner 8 of the leg piece 3 In addition, since both ends of the leg portion do not protrude when folded, it is easy to carry and excellent in portability.

  Next, the manufacturing method of the base of this invention is demonstrated according to FIG. FIG. 7a is an explanatory view showing a state in which the finish line is inked on the surface of the plate material, and FIG. 7b is an explanatory view showing a state in which cutting is performed along the finish line.

  FIG. 7a shows a plate material which becomes a leg portion of the pedestal. In this embodiment, wood having a length of 280 mm, a width of 90 mm, and a thickness of 50 mm is used. First, the finishing lines of the leg pieces are inked on the surface of the plate material in advance. Next, a through hole having a diameter of 6 mm is formed by a cone from a, b, c, d corresponding to the position of the inner groove 5 of the plate material. Then, a thread saw is inserted into each hole to make a cut parallel to the longitudinal direction, and the side portions A and B are cut off. Further, the parts C and D in side view are cut out with a thread saw to produce leg pieces 2 and 3 as shown in FIG. 7b.

  Then, three V-shaped grooves 6 are formed at arbitrary positions intersecting the leg piece 3 of the leg piece 2 to enable engagement with the corners 8 of the leg piece 3, and at the end of the leg piece 2. A base plate (not shown) is attached by a hinge (not shown) to complete the pedestal of the present invention. The plate material is not limited to wood, and may be any material that can be punched and cut out, such as plastic, and has strength as a leg piece.

  Since the pedestal is produced by the above steps, the leg pieces 2 and 3 can be produced at the same time, and a pivoting member for pivoting the leg pieces in an X-shape is not required. Less man-hours are required. Further, since both end portions of the leg pieces 2 and 3 are processed in a state where they are bent upward and downward in advance, both end portions do not protrude when the leg pieces 2 and 3 are folded, and the portability is excellent.

  As described above, according to the pedestal according to the present invention, it is possible to provide a pedestal that can be processed from a single plate material and that has a leg portion having a cross structure in an X shape without requiring a pivoting member. In addition, the height of the pedestal can be adjusted by the engagement of the plurality of V-grooves formed perpendicular to the plurality of inner grooves provided in the center of the leg piece and the bent corners of the leg piece, and further folded. In this case, both end portions of the leg portion do not protrude and the portability is excellent.

It is a perspective view which shows one Example of the base of this invention. It is a side view which shows the state which folded the base of this invention. FIG. 3 is a plan view of FIG. 2. It is explanatory side view which shows the height adjustment of the base of this invention. It is explanatory side view which shows the height adjustment of the base of this invention. It is explanatory side view which shows the height adjustment of the base of this invention. It is explanatory drawing which shows the preparation process of the base of this invention.

Explanation of symbols

1 Pedestal 2, 3 Leg piece 4 Base plate 5 Inner groove 6 V groove 7 Hinge 8 Corner

Claims (3)

  In a pedestal having legs crossing the X-shape, a pair of substantially flat leg pieces are inserted into each other by a plurality of inner grooves provided in the center thereof to form a hand-like shape. A pedestal characterized in that it is made of crossed braiding structure legs.   The pedestal according to claim 1, wherein the pair of leg pieces are bent upward and downward at predetermined positions from both ends thereof.   A plurality of V-grooves formed perpendicular to a plurality of inner groove portions provided in the center of the leg piece and a bent corner portion of the leg piece engage with each other to intersect the X-shape. The pedestal according to claim 1, wherein the height of the leg is adjustable in a plurality of stages.

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