JPH0735644U - Seat eyelet - Google Patents

Abstract

(57) [Abstract] [Purpose] Lightweight synthetic resin eyelets have the disadvantages of blocking suitability in the stock hopper and poor slippage on the alignment shooter due to the surface shape of the eyelet members. Improve. A synthetic resin eyelet 1 composed of a male member 2 and a female member 3, wherein a large number of convex projections 6 are formed partially or continuously on the outer surface of both male and female members. It is possible to reduce the contact area and the frictional resistance to facilitate sliding on the alignment shooter.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an eyelet for agriculture, civil engineering, construction, or a sheet formed for attachment to a peripheral portion of a synthetic resin sheet such as a covering sheet and a releasable sheet for open-air loading materials. It is something.

[0002]

[Prior art]

 Conventionally, Nozumi sheets, curing sheets, rejuvenating sheets, etc. have been manufactured by slitting a polyolefin synthetic resin film in a narrow width and stretching it to obtain a tape yarn. The one obtained by coating the same kind of resin as the tape yarn on one side or both sides using this as a base material is used. In general, these synthetic resin sheets are reinforced by folding back their outer peripheral portions by sewing or welding, and a plurality of metal eyelets are provided on the folding edges at predetermined intervals. The eyelet is used for fastening and fixing the sheet by using the eyelet hole and binding the braid, wire or the like to the support through the eyelet hole.

However, since the eyelets are made of metal such as aluminum or brass, in order to collect the used synthetic resin sheet and put it into a reusable state, a metal eyelet having a different composition is used. After cutting off from the sheet, only the resin sheet had to be finely cut and washed, which was troublesome. Therefore, it has been disclosed that the eyelet member is a synthetic resin molded product so that the synthetic resin sheet alone can be reused as it is, and it has been put to practical use.

[0004]

[Problems to be solved by the device]

 By the way, the eyelets of synthetic resin moldings can be processed using a conventional eyelet punching machine due to the plastic deformation characteristics and elastic deformation characteristics of the synthetic resin. It is also effective because the fusion bonding method can be adopted. However, although it has been widely used in the conventional eyelet, the specific gravity of synthetic resin is about 1/3 that of aluminum, so it is lighter than that of aluminum. There is a problem in that processing is inconvenient due to the poor slippage.

[0005]

[Means for Solving the Problems]

 Therefore, the present invention was made by studying an eyelet member made of synthetic resin, which is excellent in workability, and its structure is a male member 2 having a cylindrical protrusion 5 and an outer diameter of the cylindrical protrusion of the male member. And a female member 3 having an opening 4 of approximately the same diameter, which is a synthetic resin eyelet 1 in which a large number of convex protrusions 6 are formed partially or continuously on the surface located outside both male and female members. It is an eyelet for a seat, which is characterized by shinko.

[0006]

[Action]

 The outer surface of the eyelet 1 has a slight curved surface, but it has a large contact area when it slides, is lightweight, and is difficult to slip and poor in workability. Therefore, the large number of convex projections 6 formed on the surface reduce the contact area, and as a result, the frictional resistance is small and sliding is facilitated.

[0007]

【Example】

 Hereinafter, description will be added in the examples.

As the eyelet 1, a circular male member 2 and female member 3 made of high-density polyethylene were molded. The female member 3 is provided with an opening 4, and the male member 2 is provided with a cylindrical projection 5 having the same diameter as the female member opening 4 and having a length reaching the surface of the female member 3 when both members are fitted. is doing. Both the male and female members are formed in the peripheral portion of the synthetic resin sheet 7 by a conventional eyeletting machine through a series of sheet holes.

The eyelet molding die is processed, and the circular convex protrusions 6 are arranged and molded on the outer surface of both male and female members. This is referred to as Example 1, and the female member 3 is shown in FIG. Similarly, what was radially formed from the central portion with the convex projections 6 as the filaments was formed and formed as Example 2, of which the female member 3 is shown in FIG.

In the first and second embodiments, the convex protrusions 6 are formed by circular protrusions and linear protrusions, but the convex protrusions 6 can express letters, figures, company names, or product names. As Example 3, FIG. 3 shows a female member 3 among them.

Even though the synthetic resin eyelet members of the respective examples are lightweight, blocking in the stock hopper and sliding on the alignment shooter are the same as those of conventional metal eyelets, and are suitable for processing. It was excellent.

[0012]

[Effect of device]

 As described above, according to the present invention, by forming a large number of convex protrusions on the outer surfaces of the male and female members that are eyelets, the contact area with the sliding surface is reduced and the frictional resistance is reduced. The blocking in the stock hopper and the slippage on the alignment shooter before the eyelet finishing can be eliminated, and the working efficiency can be improved. Furthermore, the arrangement of convex projections makes it possible to express characters, figures, etc., and is useful as a synthetic resin eyelet having a design property.

[Brief description of drawings]

FIG. 1 is a plan view (a) and an AA cross-sectional view (b) of an eyelet female member according to a first embodiment.

FIG. 2 is a plan view (a) and a BB sectional view (b) of an eyelet female member according to a second embodiment.

FIG. 3 is a plan view (a) and a CC sectional view (b) of the eyelet female member of the third embodiment.

FIG. 4 is a cross-sectional view of a state in which eyelets are cast on the sheet.

[Explanation of symbols]

 1 Eyelet 2 Male member 3 Female member 4 Opening 5 Cylindrical protrusion 6 Convex protrusion 7 Sheet

Claims (1)

[Scope of utility model registration request] 1. A synthetic resin eyelet 1 comprising a male member 2 having a cylindrical projection 5 and a female member 3 having an opening 4 having a diameter substantially the same as the outer diameter of the cylindrical projection of the male member. An eyelet for a sheet, characterized in that a large number of convex projections 6 are formed partially or continuously on the surface of each of the male and female members located outside.