Stapler

Patent metadata

Field	Value
Publication number	US-9643307-B2
Application number	US-201314102842-A
Country	US
Kind code	B2
Filing date	Dec 11, 2013
Priority date	Dec 12, 2012
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A stapler includes a penetrating part including a pair of cutting blades to form holes in a workpiece and to cause leg portions of a staple to penetrate the workpiece, an operating member, and a bending part configured to bend the leg portions. The bending part includes a bending member configured to bend the leg portions of the staple, and a driving force transmitting section configured to transmit an operation of the operating member to the bending member.

First claim

The invention claimed is:

1. A stapler configured to bind a workpiece using a non-metal staple, the staple having a crown portion and a pair of leg portions extending from respective ends of the crown portion, the crown portion extending in a second direction perpendicular to a first direction, the stapler comprising:
a penetrating part including a pair of cutting blades spaced apart from each other, wherein the penetrating part is configured to form holes in the workpiece and to cause the leg portions to penetrate the workpiece by inserting and withdrawing the cutting blades with respect to the workpiece;
an operating member operable to cause the leg portions of the staple to penetrate the workpiece by the penetrating part; and
a bending part configured to bend the leg portions of the staple, which has penetrated the workpiece, along the workpiece to bond the leg portions to each other,
wherein the bending part includes a bending member configured to bend the leg portions of the staple, and a driving force transmitting section configured to directly transmit an operation of the operating member to the bending member, and the drive force transmitting section including a push-up member which is able to be slid in a forward/rearward direction and which is configured to operate the bending member.

2. The stapler according to claim 1 , further comprising:
an ejecting member configured to perform an operation of inwardly bending the leg portions of the staple, which has penetrated the workpiece by the penetrating part,
wherein the driving force transmitting section includes a driving force transmitting portion configured to move the ejecting member and the bending member in accordance with a movement of the operating member such that the ejecting member is moved in a direction toward the leg portions of the staple, which has penetrated the workpiece, to bend the leg portions, the ejecting member, which has bent the leg portions, is retracted in a direction away from the leg portions, and the bending member is moved in the direction toward the leg portions after the ejecting member is retracted.

3. The stapler according to claim 1 , wherein the bending member includes a first bending member configured to bend one of the leg portions of the staple, a second bending member configured to bend the other of the leg portions, and a bonding member configured to bond the one of the leg portions bent by the first bending member and the other of the leg portions bent by the second bending member, and
the driving force transmitting section is configured to transmit a driving force of the operating member to the first bending member, the second bending member, and the bonding member.

4. The stapler according to claim 3 , wherein the driving force transmitting section includes cam grooves configured to displace each of the first bending member, the second bending member, and the bonding member by a movement of the push-up member.

5. The stapler according to claim 1 , wherein the operating member is configured such that a distance between a force receiving portion and a fulcrum axis of rotation and a distance between a force acting portion and the fulcrum axis changes by shifting the fulcrum axis in accordance with the operation of the operating member, so as to change a reduction rate of a load applied to the operating member.

Assignees

• Max Co Ltd

Inventors

• Kato Yutaka
• Miwa Suguru

Classifications

• B27F7/19

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

• B25C5/0271

  Clinching means therefor · CPC title

• B25C5/0264

  having pivoting clinching means for bending the staple ends · CPC title

• B25C5/0257 Primary

  without an anvil, e.g. using staples of particular shape bent during the stapling operation without the use of external clinching means · CPC title

• B25C5/0207

  Particular clinching mechanisms (B25C5/0271 takes precedence) · CPC title