JP2007077581A - Sheet stretching member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet stretching member which can be rapidly, easily, inexpensively and integrally constituted. <P>SOLUTION: This sheet stretching member comprises: a plastically-formable bar for latching an end of a sheet by a connecting means such as a string; a protrusive piece which is formed by protruding a part of the bar by plastic forming; and a long material which is juxtaposed with the bar, and which is mounted on a structure in the state of being welded to a leading end of the protrusive piece and integrated with the rod. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a member for stretching a sheet, that is, a sheet stretching material.

  As conventional sheet covering materials, for example, as shown in FIG. 5, a metal pipe P as a long material, a bar T arranged in parallel at an appropriate interval along the metal pipe P, and these metal pipes There is a projecting piece H that integrally connects P and a bar T, and the end of the sheet S is hooked on the bar T by a string M, and the sheet S is stretched.

  However, as shown in FIG. 6, the conventional sheet stretching material is configured such that the protruding pieces H between the metal pipe P and the bar T are welded and integrated, so that these 3 The three members must be accurately fixed in place, and the protruding piece H must be welded to the metal pipe P and the bar T, respectively, so that the three members must be integrated. In addition, there are problems such as requiring a jig for fixing the member, high-precision positioning and welding work.

  The problem to be solved by the present invention is to provide a seat covering material that can be constructed quickly, easily and inexpensively.

  The sheet tension material of the present invention is capable of plastic working, a bar for hooking the end of the sheet by connecting means such as a string, and a protrusion formed by projecting a part of the bar by plastic processing It is composed of a strip and a long member that is juxtaposed with the rod and welded to the tip of the protruding piece to be integrated with the rod and attached to the structure.

  According to the present invention, by forming the protruding piece from the metal rod by plastic working, it is not necessary to form the protruding piece by welding or the like as in the prior art, and it can be configured quickly and inexpensively. In addition, it is possible not only to quickly and easily construct a projecting piece that has been formed by plastic working by butting it to a long material such as an iron pipe. Since it is not necessary, it can be provided at low cost.

  FIG. 1 is a view showing a composite material of a bar material and a long material according to the present invention and a sheet tension state thereof, wherein 1 is an iron pipe as a long material according to the present invention, and 2 is a bar material according to the present invention. The iron bar 2a is a protruding piece. The edge of the sheet S is stretched by the string M on the iron bar 2.

  As is apparent from FIG. 2, the iron bar 2 is formed with a plurality of protruding pieces 2a at predetermined intervals along the longitudinal direction thereof. Each protruding piece 2a protrudes from the iron bar 2 in the radial direction by the same length. The tip of the protruding piece 2a is butt welded to the iron pipe 1, and both are integrated. Therefore, the protruding length of the protruding piece 2 a is a gap between the iron pipe 1 and the iron bar 2.

  FIG. 3 is an enlarged perspective view of the iron bar 2 and the protruding piece 2a formed integrally therewith, and FIGS. 4 (A) and 4 (B) are diagrams for explaining the forming method. That is, when a die G as shown in FIG. 4 (A) is pushed in from the top and bottom of the iron bar 2 as shown by an arrow, a part of the iron bar 2 is crushed and extended in the lateral direction as shown in FIG. 4 (B). The protruding piece 2a is formed. In addition, it is preferable to hold down the surrounding iron bar 2 so that a part of the iron bar 2 crushed by the mold G extends reliably in the lateral direction (axial direction).

  The bar in the present invention is not limited to the iron bar 2 of the above embodiment, but is a metal material that can be plastically processed and is weldable (for example, iron, copper, aluminum, and alloys thereof). There is a need. In addition, the long material in the present invention does not need to be the iron pipe 1 of the above-described embodiment, and a metal material that can be welded to the metal rod (for example, an iron alloy, copper, aluminum, or an alloy thereof). Any cross-sectional shape or thickness may be used.

It is sectional drawing which laid the sheet | seat with the sheet | seat covering material of this invention. It is a disassembled perspective view of the sheet | seat covering material of this invention. It is a perspective view of a horizontal bar and a protrusion piece. It is explanatory drawing (A) (B) which shows the press work of an iron bar and a protrusion piece. It is the top view (A) which laid the sheet | seat with the conventional sheet | seat covering material, and its sectional drawing (B). It is a disassembled perspective view of the conventional composite material.

Explanation of symbols

1 Iron pipe 2 Iron bar 2a Protruding piece G Mold H Protruding piece M String P Metal pipe S Sheet T Bar

Claims (1)

  A bar material that can be plastically worked and for hooking the end of the sheet by a connecting means such as a string, a protruding piece formed by projecting a part of the bar material by plastic working, and the bar material are arranged in parallel. In addition, the seat covering material is formed of a long material that is welded to the tip portion of the protruding piece and integrated with the bar and attached to the structure.