JPS5851022Y2 - Connector for stacked paper layers - Google Patents

Description

[Detailed description of the invention] The present invention creates stacked paper sheets that are integrally bound by inserting a hollow wire tube into the stacked paper sheets and caulking both ends of the tube toward the outside. , relates to a connecting tool for connecting using the hollow wire tube.

The purpose of the present invention is to make the thickness of the hanging shaft approximately equal to or slightly thinner than the inner diameter of the hollow wire tube in the stacked sheet layer bound by the hollow wire tube. In addition to making it easier to fit the locking shaft into the hollow wire tube, by providing an escape prevention protrusion on the surface of the locking shaft, it is possible to prevent the locking shaft once inserted into the hollow wire tube from escaping.
A connector for connecting paper sheets using hollow wire tubes, which can firmly connect the paper sheets stacked together using the hollow wire tubes. This is what we provide.

Another object of the present invention is that the peripheral edge of the latching collar, which is provided with latching shafts on both sides, is tapered toward the tip, thereby connecting stacked sheets of paper sheets using hollow wire tubes. Occasionally,
As for the connecting part using the connecting tool, the curved shape of the caulked part of the hollow wire tube at the opposing position matches the shape of this hanging flange, and the instability of the connecting part due to the presence of the hanging flange is eliminated and the connection is made. The present invention provides a connecting device for interleaved paper sheets using a hollow wire tube, which makes the connection by the connecting device strong by bringing the parts close to each other.

That is, in the present invention, a hanging shaft is provided on both sides of a hanging collar that tapers toward the tip of the peripheral edge, and the thickness of the hanging shaft is adjusted to match the thickness of the hollow wire in the stacked paper sheet layer bound by a hollow wire tube. The gist of this invention is a structure of a connecting tool for binding paper layers using a hollow wire tube, which is formed to be approximately the same as the inner diameter of the binding arm, or to be slightly thinner, and has a protrusion on its surface to prevent escape. .

Next, the present invention will be explained according to the illustrated embodiment. Reference numeral 1 denotes a hanging collar, which is tapered from its base to its peripheral edge, and has a hanging collar on both sides for supporting hanging shafts 2, 2. The shaft 2 is attached to the hollow wire tube in the stacked sheet layer a.
It is useful as a stopper when inserted.

The latch shaft 2 is formed to have a thickness that is approximately the same as the inner diameter of the hollow wire tube of the paper sheet a to be inserted, or is formed to be slightly thinner than the inner diameter, and the tip is thinner than the base as a whole. It is better to have a tapered shape.

Furthermore, it is effective to mold the locking collar A and the locking shaft 2.2 integrally from a hard or soft synthetic resin material.

Reference numeral 3 denotes an escape prevention protrusion, which is provided protrudingly on the surface of the latching shaft 2. When the latching shaft 2 is inserted into the hollow wire tube, this escape prevention projection is formed on the inner surface of the hollow wire tube. The prevention protrusion 3 engages to prevent the locking shaft 2 from moving or coming off.

The escape prevention piece 3 may have any suitable shape, such as a plurality of wart-like protrusions arranged in a row, or a linear protrusion arranged in an annular or spiral shape.

Further, as shown in FIG. 3, the escape prevention protrusion 3 is formed as a protrusion that is inclined backwardly with respect to the direction in which the locking shaft 2 enters the hollow wire pipe, and has an acute-angled end. Time is extremely effective.

The connector of the present invention is formed in a diagonal manner, and is inserted into the hollow wire tubes b and b, respectively, of the stacked sheet layers a and a, which connect the upper and lower retaining shafts 2, 2. , each hanging shaft 2,
The escape prevention protrusion 3゜3...□ in 2 engages and holds the inner surface of the hollow wire tube b, and holds the stacked sheet layer a.
, a can be connected using their hollow wire tubes and b.

In this way, according to the present invention, the thickness of the hanging shaft 2 is made to be approximately the same as the inner diameter of the hollow wire tube in the stacked sheet layer a into which it is inserted, or slightly thinner than that. This has the practical benefit of being able to be inserted into the hollow wire tube very easily without causing strain and therefore without damaging the hollow wire tube.

In addition, according to the present invention, the escape prevention protrusion 3 is arranged on the surface of the locking shaft 2, so that once the locking shaft 2 is inserted into the hollow tube, the escape/prevention projection 3 is disposed on the surface of the locking shaft 2. This has the practical benefit of being able to engage the inner surface of the hollow wire tube to prevent it from moving or coming off, and to firmly maintain the connection of the stacked paper sheets by the connector.

Further, according to the present invention, since the peripheral edge of the latch collar 1 having the latch shafts 2, 2 on both sides is tapered toward the tip, the stacked paper sheet layer a by the hollow wire tube b is .

When connecting parts a, the shape of the curved caulked part in the hollow wire tubes located at opposing positions as a connecting part by the connecting tool matches the shape of this latch collar 1, and the shape of the latch collar 1 matches.
This has the practical benefit of eliminating the instability of the connecting parts due to the presence of the connecting parts and bringing the connecting parts closer to each other, thereby making the connection by the connecting tool stronger.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a vertical side view showing the state of use, Fig. 2 is a longitudinal side view of another embodiment, and Figs. 3 and 4 are further sectional views of other embodiments. It is a side view showing an example. ,. A brief explanation of the drawings is as follows. 1 is a latching collar, 2 is a latching shaft, and 3 is an escape prevention protrusion.

Claims (1)

[Scope of utility model registration request] A hanging shaft is provided on both sides of the hanging collar that tapers toward the tip of the peripheral edge, and the thickness of this hanging shaft is determined by the inner diameter of the hollow wire tube in the stacked paper sheet layer bound by the hollow wire tube. 1. A connector for connecting paper layers using a hollow wire tube, which is formed to be approximately the same or slightly thinner, and has a protrusion to prevent escape on the surface thereof.