Stapler

Patent metadata

Field	Value
Publication number	US-10695942-B2
Application number	US-201715786654-A
Country	US
Kind code	B2
Filing date	Oct 18, 2017
Priority date	Oct 31, 2016
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

A stapler includes a staple striking portion configured to strike a staple to penetrate sheets of paper and a clincher portion configured to bend staple legs of the staple penetrating the sheets of paper. The clincher portion includes a pair of clinchers. The pair of clinchers are configured to perform a first operation and a second operation. In the first operation, the pair of the clinchers move along a surface direction of the sheets of paper to approach each other. In the second operation, the pair of clinchers move to approach the sheets of paper after the first operation.

First claim

The invention claimed is:

1. A stapler comprising:
a staple striking portion configured to strike a staple to penetrate sheets of paper;
a clincher portion comprising a pair of clinchers and configured to bend staple legs of the staple penetrating the sheets of paper;
a pressing portion configured to press the pair of clinchers while the pair of clinchers are close to each other,
wherein the pair of clinchers are configured to perform a first operation and a second operation,
wherein in the first operation, the pair of the clinchers move along a surface direction of the sheets of paper to approach each other,
wherein in the second operation, the pair of clinchers move to approach the sheets of paper after the first operation, and
wherein each of the pair of clinchers comprises a first protrusion along a first edge, and wherein the pressing portion presses the pair of clinchers at each respective first protrusion to cause pivoting of each of the pair of clinchers about a point, and the point of each of the pair of clinchers abuts against a respective one of the staple legs.

2. The stapler according to claim 1 , wherein in the second operation, a distance between the points of the pair of clinchers is narrower than an inner width of a staple crown of the staple penetrating the sheets of paper.

3. The stapler according to claim 2 , wherein in the second operation, the clincher comes in contact with a region of the staple leg of the staple, which penetrates the sheets of paper, ranging from the point of the clincher to a distal end of the staple leg.

4. The stapler according to claim 1 , further comprising:
a cutting portion configured to cut the staple legs of the staple penetrating the sheets of paper; and
a clincher link configured to operatively connect the cutting portion with the clincher portion.

5. The stapler according to claim 4 ,
wherein the cutting portion is configured to move to:
a first position where the cutting portion is advanced into an operation region of the pair of clinchers; and
a second position where the cutting portion is retracted from the operation region of the pair of clinchers; and

wherein the pair of clinchers are configured to perform the first operation in accordance with a movement of the cutting portion from the first position to the second position.

6. The stapler according to claim 5 ,
wherein the clincher link comprises a pair of clincher links,
wherein each of the clincher links is configured to movably support each of the clinchers, and
wherein in accordance with the movement of the cutting portion from the first position to the second position, the pair of the clincher links are pivoted to be closed to each other, and the pair of clinchers are configured to perform the first operation.

7. The stapler according to claim 6 ,
wherein each of the clincher links comprises:
a protrusion protruding from a location where the pair of the clincher links are opposed to each other; and
a recess adjacent to the protrusion,

wherein the cutting portion comprises the pair of the protrusions,
wherein each of the protrusions of the cutting portion is in contact with the protrusion or the recess of each of the clincher links, and
wherein in accordance with the movement of the cutting portion from the first position to the second position, the protrusions of the cutting portion move from a state, where the protrusions of the cutting portion are in contact with the protrusions of the clincher links, to a state, where the protrusions of the cutting portion are in contact with the recesses of the clincher links, and the pair of the clincher links are pivoted to be closed to each other.

8. The stapler according to claim 4 ,
wherein the cutting portion is configured to move to:
a first position where the cutting portion is advanced into an operation region of the pair of clinchers;
a second position where the cutting portion is retracted from the operation region of the pair of clinchers;
a third position where the cutting portion is retracted from the second position, and

wherein the pair of clinchers are configured to perform the second operation in accordance with a movement of the cutting portion from the second position to the third position.

9. The stapler according to claim 8 ,
wherein in accordance with the movement of the cutting portion from the second position to the third position, the pressing portion is configured to press the pair of the clincher links, and the pair of clinchers are configured to perform the second operation.

10. The stapler according to claim 9 ,
wherein the pressing portion comprises an inclined portion,
wherein the cutting portion comprises a shaft portion, and
wherein in accordance with the movement of the cutting portion from the second position to the third position, the shaft portion of the cutting portion is configured to push the inclined portion of the pressing portion, and the pressing portion is pivoted in a direction toward the pair of the clincher.

11. The stapler according to claim 4 , wherein the clincher portion further comprises a support plate for movably supporting the pair of clinchers.

12. The stapler according to claim 11 , wherein the pressing portion covers the cutting portion and the support plate.

13. The stapler according to claim 1 , further comprising:
a cam;
a link portion; and
a motor, wherein the motor is configured to rotate the cam, and
wherein the link portion is configured to transfer operation of the cam to the staple striking portion and the clincher portion.

14. The stapler according to claim 1 , wherein a first clincher of the pair of clinchers comprises a first plate member of a same shape as a second plate member of a second clincher of the pair of clinchers, and the first clincher laterally opposes the second clincher.

15. The stapler according to claim 14 , wherein the first clincher further comprises a first recess on a second edge, and the second edge opposes the second clincher.

16. The stapler according to claim 15 , wherein the first clincher further comprises a second protrusion positioned along the second edge, and the second protrusion extends from a third edge of the first clincher to the first recess, wherein the third edge of the first clincher abuts a respective one of the stapler legs and on an opposite side from the first edge of the first clincher.

17. The stapler according to claim 16 , wherein the first clincher further comprises a second recess along the third edge, and the second recess is closer to a fourth edge of the first clincher than to the second edge of the first clincher, wherein the fourth edge is on an opposite side from the second edge of the first clincher.

18. The stapler according to claim 14 , wherein the first clincher further comprises a claw on the first edge.

Assignees

• Max Co Ltd

Inventors

• Shimizu Toshio
• Kameda Futoshi
• Sugihara Shinpei

Classifications

• B27F7/006

  Nailing or stapling machines provided with means for operating on discrete points · CPC title

• B27F7/38

  Staple feeding devices · CPC title

• B27F7/36

  operated by electric power · CPC title

• G03G2215/00827

  Stapler · CPC title

• B25C5/0207

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