JPS62218079A - Staple-cassette - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in the cassette of a cassette stapler.

Conventional technology and its Ul points The present applicants previously proposed a cassette type stapler.

In this type of stapler, a cassette loaded with a group of staplers is mounted on a cassette holder member, making replenishment of staples very easy and simple. Such cassettes utilize springs to press the group of staples toward their exit opening and to keep the frontmost staples always located within the exit opening. Obviously, without this spring, the staple capacity of the cassette would be increased. For this purpose, instead of a spring, a means is required to always bias the stable group toward the ejection opening.

SUMMARY OF THE INVENTION The present invention provides a means by which the foremost staple of a group of staples can always be located within the firing opening without the use of a spring. As a means for this purpose, a magnet piece is arranged at the front of the firing opening, that is, on the inner surface of the front end wall of the cassette, and the staple group is attracted by its magnetic force, so that the frontmost staple of the staple group is always located within the firing opening.

According to this configuration, the hollow interior of the cassette can be used almost completely for accommodating the staple group, and the number of times the cassette must be replaced can be reduced.

EXAMPLES Hereinafter, the present invention will be described by way of examples with reference to the accompanying drawings.

Referring first to FIG. 1, a cassette 10 is shown having a closed front end 12 and an open rear end 1, not shown explicitly.
It is a relatively elongated rectangular parallelepiped member having 4. This is loaded into the cassette holder member of the cassette type stapler previously proposed by the present applicant.

The top wall 16 of the cassette IO includes a punch 18 formed near its front end, and the bottom wall 20 also has a punch 22 aligned with the punch 18, as shown in FIG.

A magnet piece 24 is secured to the inner surface of the front end wall 12A of the cassette 10 within the punching opening 18.22 of the cassette 10 by suitable coupling means. For example, a columnar projection 45 provided on the front end wall 12A of the case 10 is fitted into a hole 46 bored in a corresponding portion of the magnet piece 24 and has an inner diameter slightly smaller than the outer diameter of the columnar projection 45. It may be fixed by marking or by adhesive.

Since the stable is made of iron, the stable group 2 loaded into the hollow interior 10A of the cassette 10 is shown in FIG.
6 is attracted by the magnetic force of the magnet piece 24, and is always positioned forward, so that its frontmost staple 26A is always located in the aligned upper and lower punching openings 18.22.

After loading the stable group 26 into the cassette IO, a cap 30 as shown in FIG.
Install it on 4. A pair of ears 34 are provided on the inner surface 32 of the cap 30, and a locking protrusion 36 is formed on the outward facing surface of each ear piece 34, so that the cap 30 is attached to the opening rear end 14 of the cassette IO. When the retainer provided on the side wall 38 of the cassette 10 adjacent to the opening rear end 14 engages the locking protrusion 36 with the hole 40 (only one is shown in the figure), the cap 30 is attached to the cassette 10. Fix it.

FIG. 3 shows a variation of the invention in which the magnet piece 42 fits within the front lateral interior opening portion 44A of a generally H-shaped opening 44 formed at the front end of the cassette IOA. 1.2, and is held more firmly than the magnetic strips than in the embodiment shown in FIG. 1.2.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a stable cassette according to the present invention. 2 is a fragmentary cross-sectional view of the stable cassette shown in FIG. 1; FIG. FIG. 3 is a fragmentary perspective view showing a modification of the present invention.

Claims (1)

[Claims] A staple cassette for use in a stapler including a base member, a cassette holder member rotatably attached to the base member, and a handle member rotatably attached to the cassette holder member, the front end It is a relatively elongated hollow rectangular parallelepiped with a closed end and an open rear end, and has a staple ejection opening formed adjacent to its front end wall and aligned with the top wall and the bottom wall. fixing a magnet piece to the inner surface of the front end wall in the mouth;
A staple cassette characterized in that, after a group of staples is loaded into the hollow part of the rectangular parallelepiped, the rear end of the opening is closed with a cap.