JPS5840233Y2 - Connector for lattice shutter - Google Patents

Description

[Detailed description of the invention] The present invention relates to a connecting tool for a lattice shutter, and provides a lattice shutter that has a small number of parts, is inexpensive, and can be easily assembled, and also prevents the ring units from rolling relative to each other. .

A conventional lattice-type shutter has a decorative pipe 2 on a horizontal axis cut out from a metal rod or tube body of a required length, as shown in Fig. 1.
Then, insert the link 3 into the horizontal shaft 1) through the insertion holes drilled at the top and bottom of the link 3, and then fit the decorative pipe 2 and the link 3 one after another to connect both ends of the horizontal shaft 1. It was covered with a cap 4 and secured with a split pin 5.

However, such a lattice-type shutter has a large number of parts, requires complicated assembly work, and is therefore expensive. Furthermore, the lattice-type shutter causes mutual lateral movement of the link units, that is, deviation of the links and decorative pipes on the horizontal axis. However, the shutter had some drawbacks such as distortion of the entire shutter.

The present invention solves these conventional drawbacks, and will be described in detail below with reference to the drawings showing embodiments.

In FIGS. 2 to 6, the dust ring is a connecting ring, and a flange 12 is annularly protruded from the periphery of one end of a cylindrical body 11 having a circular cross section.
0 locking edge is formed.

It is appropriate that the inner diameter of the cylinder 11 be slightly larger than the outer diameter of the horizontal shaft 40 for ease of assembly.

Further, a locking portion 14 is formed to protrude outward from the other end of the cylinder 11, and a notch groove 13 of an appropriate width is bored in the side wall of the cylinder 11.

On the other hand, reference numeral 20 denotes a locking ring which is a mounting member, and is made of, for example, an annular member having a rectangular cross section, and as shown in FIGS. At the same time, a step 22 is formed on the remaining inner periphery from approximately half the wall thickness of the locking ring, so that the locking portion 14 of the connecting ring fits into the notch 23 of the locking ring. Provided so that they can be overlapped and fitted.

Reference numeral 24 denotes a tapered bulge provided on the inner periphery of the lock ring 4 adjacent to the stepped portion 22, and after the lock ring 4 is overlapped and fitted to the connecting ring, the lock ring is rotated. As a result, the stepped portion 22 is locked to the locking portion 14, and the taper 24 presses the locking portion 14 of the connecting ring 10, thereby pressing the cylindrical body 11 inward, and the connecting ring is removed from the horizontal axis. 40 can be reliably pressed and held.

A small protrusion 15 is provided at an appropriate position on the outer periphery of the locking portion 14 of the connecting ring, and is inserted into a small recess 25 provided in the taper 24 of the locking ring.

Next, an example of assembly using the connector for the lattice shutter of the present invention is shown. First, as shown in Fig. 2, an appropriate number of links 3
The connecting ring 1o is inserted into the insertion hole 31 of 0, and fitted into the cylindrical body 11.

Similarly, the vertical insertion holes 32 and 33 of the link 30
By adding another link (not shown) to the connecting ring 10, the connecting ring is inserted and the locking ring is traced, and its notch 23 is inserted into the connecting ring 10.
The link 30 is rotatably held between the collar 12 of the connecting ring 10 and the locking ring 20 by overlappingly fitting into the locking portion 14 of the connecting ring 10.

After manufacturing multiple rows of links connected in multiple stages like a chain in this way, as shown in FIG. The connecting ring 10 and the locking ring 2o are inserted into the holes, and then the locking ring 2o is rotated, and the stepped portion 22
engages with the locking portion 14 and holds the horizontal axis at 4°, completing the assembly.

When the taper 24 is provided in the locking ring, the cylindrical body 11 is pressed inward, so the horizontal shaft 40 is more reliably pressed and held.
There is no need to attach protective caps to both ends of the rod shaft 40 in order to prevent the links from shifting to one another as in the conventional case.

In this way, the lattice shutter chain according to the present invention is
A shutter that is easy to manufacture and inexpensive, frees you from the conventional assembly work that requires a large number of parts and takes a long time, and has a simple design that does not cause the links to shift. The practical effects are great, such as being able to provide the following.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view showing the assembled state of a conventional lattice type shutter, Figs. 2 to 5 are explanatory diagrams of the coupling device for the lattice shutter of the present invention, and Fig. 2 is an exploded perspective view showing the assembled state. ,
Figure 3a is a partial sectional view of the connecting ring;
The figure is an explanatory diagram of the locking ring, where a is a front view and b is a view B-B.
FIG. 5, which shows a line sectional view, is a partial sectional view showing an assembled state. Cap: Connecting ring, 11: Cylindrical body, 12:
...Flame, 13...Notch groove, 14...
...Locking portion, breakage...Lock ring, 22...Concave stepped portion, 23...Notch, 24...Taper,
30...Link.

Claims (2)

[Scope of utility model registration request] (1) A flange is formed on the outer periphery of one end of a cylindrical body with a notched groove formed in the side wall, and a locking part of a link that faces in the diametrical direction of the cylindrical body and protrudes outward is formed on the outer periphery of the other end. A locking ring comprising a connecting ring, a step portion forming a notch into which the locking portion can be freely inserted on the inner periphery, and a tapered bulge adjacent to the step portion. A connecting tool for a lattice shutter, characterized in that it is provided with. (2) A small protrusion is provided on the outer periphery of the locking part, and a small recess into which the small protrusion can be inserted is bored in the tapered bulge of the locking ring. A connector for a lattice shutter according to item 1.