CARTRIDGE

• US 20190315013A1
• Filed: 03/14/2019
• Published: 10/17/2019
• Est. Priority Date: 04/17/2018
• Status: Active Grant

• Current Assignee: Max Co Limited
• Original Assignee: Max Co Limited
• Inventors: Sugihara, Sinpei, Shimizu, Toshio
• Granted Patent: US 10,913,175 B2
• Time in Patent Office: Days
• CPC Class Codes: B25C 5/02 with provision for bending the ends of the staples on to the work
• CPC Class Codes: B25C 5/15 operated by electric power
• CPC Class Codes: B27F 7/21 with means for forming the staples in the machine
• CPC Class Codes: B27F 7/36 operated by electric power
• CPC Class Codes: B27F 7/38 Staple feeding devices

Abstract

A cartridge includes a staple support part provided on a front end face. The staple support part includes an inclined surface protruding obliquely from the front end face in a striking direction, and is configured to support a crown portion of the staple with the inclined surface and a pair of leg portions of the staple with side edge portions of the inclined surface. The side edge portion has: a connection portion continuing to the inclined surface and extending from the inclined surface in an opposite direction to a feeding direction of the staple, by a first length; and a leg portion contact portion extending with being folded from a tip end portion of the connection portion in the feeding direction by at least the first length, and configured to support corresponding one of the pair of leg portions from an inner side thereof.

Claims

1. A cartridge configured to be mountable to a cartridge mounting part of a stapler main body, the stapler main body comprising:

the cartridge mounting part to which the cartridge configured to accommodate therein a plurality of staples can be mounted;

a feeding part configured to feed the accommodated staples toward a front end face of the cartridge and to expose at least one staple from the front end face;

a forming part configured to bend the staple exposed from the front end face in a direction following the front end face, thereby forming the same into a U-shape including a pair of leg portions and a crown portion connecting end portions of the pair of leg portions; and

a striking part configured to move the staple formed into the U-shape in a striking direction in which the staple is bent, thereby striking the staple into sheets placed at an end of the striking part, wherein

the cartridge comprises;

a staple support part provided on the front end face so as to be located inside the pair of leg portions, the staple support part including an inclined surface protruding obliquely from the front end face in the striking direction and being displaceable in a direction perpendicular to the front end face, the staple support part configured to support the crown portion with the inclined surface and the pair of leg portions with side edge portions of the inclined surface when the staple is moved in the striking direction, and

each of the side edge portions has;

a connection portion continuing to the inclined surface and extending from the inclined surface in an opposite direction to a feeding direction, in which the feeding part feeds the staple, by a first length; and

a leg portion contact portion extending with being folded from a tip end portion of the connection portion in the feeding direction by at least the first length, and configured to support corresponding one of the pair of leg portions from an inner side thereof.

2. The cartridge according to claim 1, wherein

the first length is at least twice as large as a staple width of the staple.

3. The cartridge according to claim 1, further comprising:

a first pusher protruding from the front end face and configured to press the staple in the feeding direction, wherein

a part of the inclined surface is formed with a notched portion, and

at least a part of the first pusher is configured to protrude from the notched portion.

4. The cartridge according to claim 3, further comprising:

a second pusher provided upstream of the first pusher in the striking direction, the second pusher protruding from the front end face and configured to press the staple in the feeding direction.

5. The cartridge according to claim 1, further comprising:

a face plate provided to cover the front end face and configured to contact with the staple exposed from the front end face.