JPH0540940Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stapler for binding a plurality of sheets of paper using staples.

[Conventional technology]

As shown in FIG. 3, a clincher 2 is provided on the lower frame 1, and a driver 4 is provided on the upper frame 3.
At the same time, the driver 4 is connected to the clincher 2.
A stapler is known in which the U-shaped staple needle 5 is pushed down toward the paper 6 to penetrate the paper 6 and pressed against the clincher 2 to bend and staple the paper 6.

[Problem that the invention attempts to solve]

With such a stapler, the distance between the clincher 2 and the driver 4 is increased by vertically swinging the upper frame 3 with respect to the lower frame 1 according to the thickness of the paper 6, and the distance between the clincher 2 and the driver 4 is increased.
When the paper 6 becomes very thick, the upper frame 3 is swung upward at a large angle to reduce the distance between the clincher 2 and the driver 4. Since the driver 4 is at an angle to the clincher ₂ as shown in FIG. Since the upper frame 3 is swung upward by an angle commensurate with the distance, the angle at which the driver 4 is oblique to the vertical becomes large, so that the staples 5 may not be pressed securely and binding may not be completed.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a stapler that can bind even thick sheets of paper by reliably pressing the staples against the clincher using a driver.

[Means and actions for solving problems]

A first guide groove 2 extending diagonally upward to the right is located between the left and right sides of the lower frame 10 with the clincher 15 on the left side.
A second guide groove 23 is formed diagonally upward to the left on the right side of the lower frame 10, and a second guide groove 23 is formed along the first guide groove 22 in the middle of the left and right of the upper frame 12, which has a driver 18 on the left side. A movable first guide pin 24 is provided, and the second guide groove 2 is provided on the right side of the lower frame 10.
A second guide pin 25 that is slidable along the driver 1 is provided on the upper frame 12.
A drive source 19 is provided to move the upper frame 12 up and down, and the first and second guide pins 24 and 25 are slidably fitted into the first and second guide grooves 22 and 23, respectively, so that the upper frame 12 is connected to the lower frame. 10
A stapler that moves up and down while moving left and right.

In such a stapler, the upper frame 12
moves up and down while moving left and right with respect to the lower frame 10, so the center of the driver 18 is always directed toward the center of the clincher 15, and the center of the driver 18 is at an angle to the vertical direction of the driver 18 compared to the distance between the clincher 15 and the driver 18. Since you can reduce the angle at which the
By moving the center of the stapler 8 toward the center of the clincher 15, the staple needle 20 can be reliably pressed against the clincher 15 for binding.

〔Example〕

As shown in FIG. 1, a clincher 15 is attached to the left side of the lower frame 10, and a first guide groove 22 extending diagonally upward to the right is provided between the left and right sides of the lower frame 10.
A second guide groove 23 diagonally upward to the left is formed on the right side of the lower frame 10, and the upper frame 1
The first and second guide pins 24 and 25 provided at the left and right middle and right side of 2 are connected to the first and second guide grooves 22,
23 so that the upper frame 12 can move up and down while moving in the left-right direction with respect to the lower frame 10.

A driver 18 is provided on the left side of the upper frame 12 so as to be movable up and down so as to face the cruncher 15, and the driver 18 is moved toward the cruncher 15 by a drive source 19 such as a solenoid.

The upper frame 12 includes a frame 12a equipped with a driver 18 and a frame body 12b, and a drive source 19 is provided on the frame body 12b, so that the driver 18 is pushed down by the drive source 19 to press the staples 20 against the clincher 15. It is set as.

In this way, when the distance between the clincher 15 and the driver 18 is short as shown in FIG. Groove 2
3, and from this state the upper frame 12
2, the upper frame 12 moves horizontally relative to the lower frame 10 using the first and second guide pins 24 and 25 and the first and second guide grooves 22 and 23 as guides, as shown in FIG. While moving, the first guide pin 24 moves upward to the upper right side of the first guide groove 22, the second guide pin 25 comes to the lower right side of the first guide groove 23, and the center of the driver 18 becomes the center of the clincher 15. On the other hand, the upward swing angle of the upper frame 12 becomes smaller than the distance between the clincher 15 and the driver 18, and the angle at which the driver 18 is oblique to the vertical becomes smaller. By pressing down toward the center of the clincher 15, the staple needle 20 can penetrate the paper and reliably press it against the clincher 15 for binding.

In addition, the staple needle 20 may be U-shaped,
The paper 21 may be passed through the sheet 21 by the driver 18 as a roll-shaped strip plate or a laminated open plate and pressed against the clincher 15, and since these structures are the same as conventionally known structures, their explanation will be omitted.

[Effect of idea]

Since the upper frame 12 moves horizontally and vertically with respect to the lower frame 10, the center of the driver 18 always faces the center of the clincher 15, and the driver 18 is not perpendicular to the vertical direction compared to the distance between the clincher 15 and the driver 18. The oblique angle becomes smaller.

Therefore, even when binding thick sheets, the center of the driver 18 can be moved toward the center of the clincher 15 to reliably press the stable needle 20 against the clincher 15 for binding.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a diagram for explaining the operation, FIG. 3 is a front view of the conventional example, and FIG. 4 is a diagram for explaining problems. 10 is the lower frame, 12 is the upper frame, 1
5 is a clincher, 18 is a driver, and 20 is a stapler.

Claims (1)

[Claims for Utility Model Registration] A first guide groove 2 extending diagonally upward to the right in the middle of the left and right of the lower frame 10 with the clincher 15 on the left side.
A second guide groove 23 is formed diagonally upward to the left on the right side of the lower frame 10, and a second guide groove 23 is formed along the first guide groove 22 between the left and right sides of the upper frame 12, which has a driver 18 on the left side. A movable first guide pin 24 is provided, and the second guide groove 2 is provided on the right side of the lower frame 10.
A second guide pin 25 that is slidable along the driver 1 is provided on the upper frame 12.
8 is provided with a drive source 19 for vertically moving the upper frame 12, and the first and second guide pins 24 and 25 are slidably fitted into the first and second guide grooves 22 and 23, respectively, so that the upper frame 12 is connected to the lower frame. 10
A stapler characterized by being able to move up and down while moving left and right relative to the target.