Electric stapler

Patent metadata

Field	Value
Publication number	US-11731308-B2
Application number	US-202017098093-A
Country	US
Kind code	B2
Filing date	Nov 13, 2020
Priority date	Nov 15, 2019
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

An electric stapler includes: a binding part configured to bind a sheet bundle by striking out a staple having a crown portion and leg portions; and a first guide part configured to guide the sheet bundle to the binding part, and a second guide part facing the first guide part. The first guide part and the second guide part face each other at a distance. The first guide part and the second guide part are opened therebetween as both sides along a length direction of the crown portion, and one side away from the binding part are coupled each other. Lengths from end portions on one side, which are away from the binding part along the direction orthogonal to the length direction of the crown portion, of the first guide part and the second guide part to the binding part are 15 mm or longer.

First claim

What is claimed is:

1. An electric stapler comprising:
a binding part configured to bind a sheet bundle by striking out a staple having a crown portion and leg portions; and
a first guide part configured to guide the sheet bundle to the binding part, and a second guide part facing the first guide part,
wherein the first guide part and the second guide part face each other at a distance equal to or greater than a thickness of a sheet bundle where a maximum number of bindable sheets capable of being bound by the staple are stacked,
wherein the first guide part and the second guide part are opened therebetween as both sides along a length direction of the crown portion of the staple, which is struck out by the binding part, and one side away from the binding part along a direction orthogonal to the length direction of the crown portion are coupled to each other,
wherein lengths from end portions on one side, which are away from the binding part along the direction orthogonal to the length direction of the crown portion, of the first guide part and the second guide part to the binding part are 15 mm or longer,
wherein at least one of the first guide part and the second guide part has a restraint portion for restraining a number of sheets that are inserted between the first guide part and the second guide part, and
wherein at least one of the first guide part and the second guide part has a first relief portion having a shape that is concave with respect to the restraint portion and has a dimension equal to or greater than a thickness of the staple, and enabling the staple that has bound the sheet bundle to pass therethrough.

2. The electric stapler according to claim 1 , wherein the second guide part has a guide surface between the end portion on one side away from the binding part along the direction orthogonal to the length direction of the crown portion and the binding part.

3. The electric stapler according to claim 1 , wherein at least one of the first guide part and the second guide part has a second relief portion provided on both sides or one side along the length direction of the crown portion and enabling the staple that has bound the sheet bundle to pass therethrough.

4. The electric stapler according to claim 1 , wherein at least one of the first guide part and the second guide part has a guiding portion that is provided on a tip end-side of the end portion on one side away from the binding part along the direction orthogonal to the length direction of the crown portion and is inclined in a direction in which the distance between the first guide part and the second guide part increases.

5. The electric stapler according to claim 1 , further comprising a cover that configures the second guide part,
wherein the cover is formed of a clear material enabling an inside of the cover to be seen.

6. The electric stapler according to claim 5 , further comprising a light source inside of the cover,
wherein the light source is configured to irradiate the inside of the cover with light.

7. An electric stapler comprising:
a binding part configured to bind a sheet bundle by striking out a staple having a crown portion and leg portions; and
a first guide part configured to guide the sheet bundle to the binding part, and a second guide part facing the first guide part,
wherein the first guide part and the second guide part face each other at a distance equal to or greater than a thickness of a sheet bundle where a maximum number of bindable sheets capable of being bound by the staple are stacked,
wherein the first guide part and the second guide part are opened therebetween as both sides along a length direction of the crown portion of the staple, which is struck out by the binding part, and one side away from the binding part along a direction orthogonal to the length direction of the crown portion are coupled to each other,
wherein lengths from end portions on one side, which are away from the binding part along the direction orthogonal to the length direction of the crown portion, of the first guide part and the second guide part to the binding part are 15 mm or longer,
a cover that configures the second guide part,
wherein the cover is formed of a clear material enabling an inside of the cover to be seen, and
a front face of the cover is provided with an inclined surface whose side close to the second guide part protrudes more forward than a side distant from the second guide part.

Assignees

• Max Co Ltd

Inventors

• Shimamura Masashi
• Kenjo Tatsuya

Classifications

• B27F7/36 Primary

  operated by electric power · CPC title

• B27F7/19

  with provision for bending the ends of the staples on to the work · CPC title

• B42B5/00 Primary

  Permanently attaching together sheets, quires or signatures otherwise than by stitching (by deformation thereof B31F; by adhesive peculiar to bookbinding B42C9/00) · CPC title

• B27F7/21 Primary

  with means for forming the staples in the machine · CPC title

• B25C5/0228

  power-operated · CPC title