Staple refill

Patent metadata

Field	Value
Publication number	US-12097635-B2
Application number	US-202017035308-A
Country	US
Kind code	B2
Filing date	Sep 28, 2020
Priority date	Nov 10, 2017
Publication date	Sep 24, 2024
Grant date	Sep 24, 2024

Abstract

A refill includes a peripheral wall defining a space capable of accommodating staples therein. The peripheral wall includes a bottom wall having a first side, a second side opposite to the first side, and a third side connecting end portions of the first side and the second side, a first side wall standing from the first side, a second side wall standing from the second side and opposing the first side wall, and a front wall positioned above the third side and connecting the first side wall and the second side wall. A first opening is formed on the first side wall and the front wall to extend across a boundary between the first side wall and the front wall.

First claim

The invention claimed is:

1. A refill mountable on a stapler main body in a state where the refill is loaded in a cartridge, the refill including:
a staple receiving portion including:
a bottom wall configured to allow a stack of connected staples to be placed thereon;
a rear wall extending upward from a rear part of the bottom wall; and
a front wall in which a discharging port is formed for discharging the connected staples placed on the bottom wall, the front wall extending from the bottom wall via the discharging port, the front wall being opposite to the rear wall,

wherein the bottom wall has a first protrusion portion and a second protrusion portion protruding downward from a lower surface at a rear end of the bottom wall adjacent to the rear wall and opposite to the discharging port,
wherein the first protrusion portion and the second protrusion portion each have a rear surface portion that is adjacent to the rear wall and is located on an opposite side of the discharging port, the rear surface portion configuring an inclined surface that is continuous with a rear surface of the rear wall and extending downward, and
wherein the first and second protrusion portions are spaced from each other in a direction transverse to a direction extending from the rear part of the bottom wall toward a front part of the bottom wall.

2. The refill according to claim 1 ,
wherein the staple receiving portion includes a first side wall and a second side wall,
wherein the bottom wall has a first side, a second side opposite to the first side, a third side connecting end portions of the first side and the second side, and a fourth side opposite to the third side,
wherein the first side wall stands from the first side,
wherein the second side wall stands from the second side and is opposite to the first side wall,
wherein the front wall is positioned above the third side and connects the first side wall and the second side wall, and
wherein the rear wall stands from the fourth side,
wherein each of the first protrusion portion and the second protrusion portion is a plate-shaped member,
wherein a plane of the first protrusion portion is flush with the first side wall such that it extends along the first side,
wherein a plane of the second protrusion portion is flush with the second side wall such that it extends along the second side, and
wherein the first protrusion portion and the second protrusion portion each have a triangular shape, which is continuous with the rear surface portion and the bottom wall and includes an inclined surface located on a side opposite to the rear surface portion.

3. A refill loadable in an opening of a cartridge that is loaded in a stapler main body, the opening having a rectangular shape with both sides of a bottom side of the opening being partially cut to have a pair of notches, the stapler main body being configured to receive the cartridge loaded therein and having a locking shaft, the locking shaft being positioned below the opening to extend along the bottom side of the opening and being movable in directions approaching and separating from the opening in a case where the refill is loaded through the opening, the refill including:
a staple receiving portion including:
a bottom wall configured to allow a stack of connected staples to be placed thereon;
a rear wall extending upward from a rear part of the bottom wall; and
a front wall in which a discharging port is formed for discharging the connected staples placed on the bottom wall, the front wall extending from the bottom wall via the discharging port, the front wall standing from the bottom wall through the opening, the front wall being opposite to the rear wall,

wherein the bottom wall has a first protrusion portion and a second protrusion portion protruding downward from a lower surface of a rear end of the bottom wall adjacent to the rear wall and opposite to the discharging port,
wherein the first protrusion portion and the second protrusion portion each have a rear surface portion that is adjacent to the rear wall and is located on an opposite side of the discharging port, the rear surface portion configuring an inclined surface that is continuous with a rear surface of the rear wall and extending downward, the first and the second protrusion portions being spaced from each other in a direction transverse to a direction extending from the rear part of the bottom wall toward a front part of the bottom wall,
wherein in a case where the refill is loaded through the opening,
the first protrusion portion is fitted into one of the pair of notches of the both sides of the bottom side, and
the second protrusion portion is fitted into the other one of the pair of notches, and

wherein the rear surface portions of the first and the second protrusion portions are configured to abut against the locking shaft by the locking shaft being moved in a direction approaching the opening while the first and second protrusion portions are fitted into the pair of notches.

4. The refill as set forth in claim 3 ,
wherein the locking shaft is urged in the direction approaching the opening by an elastic member,
wherein the first and second protrusion portions include inclined surfaces which, when the refill is loaded through the opening, the inclined surfaces abut against the locking shaft to move the locking shaft in the direction separating from the opening, and the first and second protrusion portions pass over the locking shaft while pushing the locking shaft downward against the elastic member, and
wherein when the locking shaft has moved back in the direction approaching the opening by the elastic member after the inclined surfaces have passed thereover, the rear surface portions of the first and second protrusion portions are positioned to abut against the locking shaft.

5. The refill according to claim 3 ,
wherein the staple receiving portion includes a first side wall and a second side wall,
wherein the bottom wall has a first side, a second side opposite to the first side, a third side connecting end portions of the first side and the second side, and a fourth side opposite to the third side,
wherein the first side wall stands from the first side,
wherein the second side wall stands from the second side and is opposite to the first side wall,
wherein the front wall is positioned above the third side and connects the first side wall and the second side wall, and
wherein the rear wall stands from the fourth side,
wherein each of the first protrusion portion and the second protrusion portion is a plate-shaped member,
wherein a plane of the first protrusion portion is flush with the first side wall such that it extends along the first side,
wherein a plane of the second protrusion portion is flush with the second side wall such that it extends along the second side, and
wherein the first protrusion portion and the second protrusion portion each have a triangular shape, which is continuous with the rear surface portion and the bottom wall and includes an inclined surface located on a side opposite to the rear surface portion.

Assignees

• Max Co Ltd

Inventors

• Shimizu Toshio
• Kameda Futoshi
• Manabe Katsunori
• Haramiishi Kiichi

Classifications

• B65H37/04

  for securing together articles or webs, e.g. by adhesive, stitching or stapling (adhering replacement to expiring web during change of web roll B65H19/18) · CPC title

• B27F7/38 Primary

  Staple feeding devices · CPC title