JPS6317827Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a guide cap that is attached to the core end of a roll of shoji paper in order to spread it correctly when pasting shoji paper that has approximately the same width as the width of a shoji door.

Hitherto, Utility Model Publication No. 50-9363 is known as a prior art for this type of guide cap. The cylindrical winding core under consideration is generally manufactured by spirally winding paper material around a rod-shaped jig. However, the cylindrical core formed in this way has the property of shrinking and expanding due to changes in the environment (mainly moisture), so it is necessary to When a cap is formed in the cap, even if the cap and the cylindrical core are fitted to each other by expansion or contraction of the cylindrical core, a constant fit may not always be obtained, and it may be too loose or too tight. or
As a result, there was a risk that the cap could not be fitted into the cap, or that even if it was fitted, it would be loose and fall off.

The object of the present invention is to provide a cap structure that allows the cap to be securely fitted to the end of a cylindrical core without loosening even if the outer diameter of the cylindrical core changes to some extent.

The first embodiment embodying this idea will be described below.
To explain according to Figures 3 to 3, reference numeral 1 denotes a bottomed cylindrical fitting part 2 with one end open to form an insertion opening 2a.
It is a plastic cap consisting of a guide flange part 3 protruding from the entire periphery of the insertion opening 2a of the fitting part 2, and three air holes 4 are transparently provided at the bottom of the fitting part 2. ing. Reference numeral 5 denotes a support protrusion protruding from three equal parts of the inner circumferential surface of the fitting part 2, and the inner surface of the supporting protrusion extends from the bottom of the fitting part 2 toward the insertion opening 2a. The fitting surface 6 is oblique so that the distance between the fitting surface 6 and the fitting surface 6 is large.

Reference numeral 7 denotes a cylindrical core made of shoji paper 8 wound into a roll, and the cap 1 is attached to both ends of the core. That is, when the end of the cylindrical winding core 7 is inserted into the fitting part 2, the end of the cylindrical winding core 7 is slightly constricted so that its outer peripheral surface is along the fitting surface 6 of the support protrusion 5, and the cap is closed. 1 is securely fitted. At this time, the air inside the fitting part 2 is compressed by the cylindrical winding core 7 and has no place to escape, which hinders the insertion work of the cylindrical winding core 7. Since the air hole 4 is provided, the air quickly escapes through the air hole 4. Therefore, the operation of inserting the cylindrical winding core 7 can be performed more smoothly with less force. This air venting is particularly effective when the other end of the cylindrical winding core 7 is closed.

When rolling out the shoji paper 8 on the shoji door 9, one end edge 8a of the shoji paper 8 is correctly pasted on one end of the horizontal frame of the shoji door 9, and then the guide flange 3 of the cap 1 is stretched over the shoji door 9. Adjust the movement of the cap 1 so that it touches the outside of both vertical frames, and gradually rotate the rolled shoji paper 8.
The shoji door 9 is correctly expanded using the flange portion 3 as a guide.

In the second embodiment shown in FIGS. 4 and 5, the entire inner surface of the fitting part 2 in the first embodiment is inserted into the inner peripheral surface of the fitting part 2 in the first embodiment from the bottom side of the fitting part 2. The axis P of the fitting part 2 as it goes toward the opening 2a.
The support protrusion 5 is provided on the inner circumferential surface of the slanted shape such that the distance between the support protrusion 5 and the support protrusion 5 is increased.

In the third embodiment shown in FIGS. 6 to 8, opposite sides of the peripheral wall of the fitting part 2 in the first embodiment are cut out, and each notch groove 10a is formed into a notch in the bottom diameter direction of the fitting part 2. The groove 10b communicates with the cutting depth 1.
0 is formed. In the case of this third embodiment,
When the end of the cylindrical winding core 7 is inserted into the fitting part 2, the fitting part 2, which is divided into two by the notch 10, is allowed by the notch 10 and elastically expanded, and the end of the cylindrical winding core 7 is inserted into the fitting part 2. is securely fitted to the cap 1.

In addition to the embodiments described above, the fitting part 2 may be formed into a bottomless cylindrical shape, or the guide flange part 3 may be formed into a bottomless cylindrical shape.
It is also possible to provide protrusions at appropriate positions on the peripheral wall, change the number of supporting protrusions 5, and change the configuration without departing from the technical idea of the present invention.

As detailed above, in the present invention, even if there is some variation in the outer diameter of the end of the cylindrical winding core 7 with respect to the inner diameter of the insertion opening 2a of the cap 1, the inclination range of the fitting surface 6 can be adjusted. If there is, not only will it be possible to securely fit the cap 1 onto the end of the cylindrical winding core 7 without loosening, but also the air in the fitting part 2 will be sucked out of the fitting part 2 when the cylindrical winding core 7 is inserted. Since the air exits quickly through the air holes 4 provided on the bottom surface, the cylindrical winding core 7 can be inserted smoothly with little force.

Further, in each of the embodiments described above, if the fitting surface 6 of the support protrusion 5 is made into a narrow linear shape, the effect of biting into the cylindrical winding core 7 is further improved.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a state in which rolled shoji paper is stretched using the guide cap according to the present invention, FIG. 2 is a front view showing the guide cap according to the first embodiment,
3 is a sectional view taken along the line A-A in FIG. 2, FIG. 4 is a front view showing the guide cap of the second embodiment, and FIG.
The figures are a sectional view taken along the line C-C of FIG. 4, FIG. 6 is a front view showing the guide cap according to the third embodiment, FIG. 7 is a sectional view taken along the line D-D of FIG. FIG. 3 is a diagram showing how the guide cap according to the embodiment is used. Cap...1, Fitting part...2, Insertion port...2
a. Guide flange part...3, Air hole...4, Support protrusion...5, Fitting surface...6, Cylindrical winding core...7, Shoji paper...8, Shoji door...9, Notch... ...10.

Claims (1)

[Claims for Utility Model Registration] 1. A shoji screen comprising a cylindrical fitting part 2 with one end open to form an insertion opening 2a, and a guide flange part 3 protruding from the peripheral wall of the fitting part 2. In a guide cap that is fitted onto the end of a cylindrical winding core 7 on which paper 8 is wound into a roll, at least one support protrusion 5 is formed protrudingly on the inner peripheral surface of the fitting part 2, and this support protrusion The inner surface of the part 5 is formed with a fitting surface 6 which is inclined so that the distance from the axis P of the fitting part 2 increases as it goes from the bottom side of the fitting part 2 toward the insertion opening 2a. A guide cap for rolled shoji paper, characterized in that air holes 4 are transparently provided at the bottom of the fitting part 2. 2. The guide cap for rolled shoji paper according to claim 1, which is a registered utility model, in which both sides of the circumferential wall of the fitting part 2 are cut out to form notches 10 that communicate with each other.