JPH0751262Y2 - Staple cartridge - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a staple cartridge in which sheet-like staples stacked inside are not easily pulled out from the exit of the staple cartridge when it is attached to a stapler.

[0002]

2. Description of the Related Art In a staple cartridge in which sheet-like staples are stacked and housed, the sheet-like staples are sequentially fed from the lowermost layer to a staple forming driving section of a stapler from an outlet at a lower end of a front wall. Sent by. Therefore, when the staple cartridge is attached to the stapler, the sheet-like staple at the bottom end can be fed from the discharge port by the endless belt. That is, there is no means for preventing the lowermost sheet-like staples from passing through the discharge port, and the lowermost sheet-like staples are easily removed from the staple cartridge. For this reason, when the cartridge is installed, the sheet-like staples that have come out of the cartridge ejection port overlap the sheet-like staples that remain on the stapler feeding device, or both the sheet-like staples and the pusher device that are stacked above are pushed. Under pressure, two sheets of lower sheet-like staples may be ejected from the ejection port at the same time, and the ejection port may be clogged.

In particular, as a stapler built in a copying machine or the like, there is a type in which the staple cartridge is mounted on the stapler so that a sheet-shaped staple discharge port of the staple cartridge faces downward. Since the sheet-like staples in the lowermost layer are mounted in a state where they are more easily pulled out from the discharge port, the above-mentioned problem is more likely to occur.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks and provide a staple cartridge capable of preventing the lowermost sheet-like staple from coming out of the discharge port of the cartridge when the staple cartridge is mounted and moved. It is an issue.

[0005]

In order to solve the above-mentioned problems, a staple cartridge of the present invention comprises a staple storing section 3 for storing a large number of sheet-like staples 2 formed by connecting unformed staples in a sheet shape. In the staple cartridge 1 in which the lowermost sheet-like staple supply outlet 9 is arranged at the lower end of the front wall 4 of the staple accommodating portion, a pair of staple receiving portions 7 for receiving both ends of the lowermost sheet-like staple 2a, 7, the bottom portion 6 of the staple accommodating portion 3 is opened, and the pusher device 10 for pressing the sheet-shaped staple is arranged on the uppermost sheet-shaped staple 2b, and the lowermost layer from the back surface of the front wall 4 of the staple accommodating portion. Sheet-shaped staples 2
The sheet-shaped staple 2 is provided with a pull-out preventing piece 13 extending from the lower surface of the sheet a to the outer surface of the rear wall 12 of the staple accommodating portion 3, and is located on the outer surface of the rear wall 12 of the staple accommodating portion. It is characterized in that the vicinity of the end of the pull-out piece 13 is attached to the rear wall 12 of the staple cartridge 1.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view of a staple cartridge according to the present invention, and FIG. 2 is a view of a stapler having the staple cartridge mounted therein.

Reference numeral 1 denotes a staple cartridge according to the present invention, which is a square storage portion 3 for storing a sheet-like staple 2 and a cartridge 1 located at a lower end of a front wall 4 of the storage portion 3.
It is composed of a guide portion 5 that guides the upper surface of the sheet-shaped staples 2 that have been discharged. On the bottom 6 of the cartridge 1, staple receiving portions 7, 7 for supporting the lowermost sheet-like staple 2a are provided at the lower ends of the side walls 8, 8 of the storage portion 3, and at the lower end of the front wall 4 of the storage portion. The discharge port 9 is formed. On the other hand, a pusher device 10 is arranged on the uppermost sheet-like staple 2b of the storage part 3, and a spring 11 of the pusher device 10 causes the sheet-shaped staple 2 to constantly press the bottom part 6 of the storage part 3. Is given.

From the rear surface of the front wall 4 of the cartridge 1 through the lower surface of the lowermost sheet-like staple 2a to the rear wall 1 of the storage section.
A pull-out prevention piece 13 for preventing the lowermost sheet-like staple 2a from coming out is extended across the outer surface of the rear wall 12, and the rear wall 12 has a rear wall 12 near the end of the pull-out prevention piece 13 facing the outer surface of the rear wall 12. It is temporarily fixed with glue. The pull-out prevention piece 13 is made of a thin flexible material such as paper, and has one end located in the middle of the front wall 4 and the other end located above the rear wall.

The staple cartridge 1 is mounted on a cartridge mounting portion 15 of a stapler 14 which is vertically arranged in a copying machine (not shown). A staple feeding endless belt 16 is stretched around the cartridge mounting portion 15, and the bottom portion 6 of the cartridge 1 is mounted in the endless belt 16 in a state of being inserted therein. This allows the endless belt 16
The sheet-like staple 2a of the lowermost layer is pressed against the upper surface of the sheet and the sheet-like staple 2a of the lowermost layer is sent to the staple forming driving portion (not shown) of the stapler 14 by the frictional force between them.

[0010]

When the guide portion 5 of the staple cartridge 1 is moved downward to be attached to the stapler 14, the sheet-like staple 2 at the lowermost layer of the cartridge storage portion 3 is moved.
Although “a” moves to the discharge port 9 side, the pull-out prevention piece 13 is located in front of the discharge port 9, and the sheet-like staple 2a in the lowermost layer cannot be pulled out from the discharge port 9. The cartridge 1 is mounted on the cartridge mounting portion 15 of the stapler 14 in a state in which the removal preventing piece 13 is extended. After mounting, the end portion of the removal preventing piece 13 located on the rear wall 12 of the cartridge 1 is pulled along the surface of the rear wall 12 to remove it from the cartridge 1. As a result, the discharge port 9 is opened and the staple sheet 2a at the lowermost layer is released from the endless belt 1.
6 is contacted, and preparation for feeding is completed.

Further, the end portion of the removal preventing piece 13 which is temporarily fastened to the cartridge rear wall 12 can be easily attached after mounting.
After peeling from 2, it can be removed from the cartridge.

[0012]

[Effects of the Invention] Since the cartridge ejection port is blocked by the ejection preventing piece, the sheet-like staples will not come out of the ejection port during handling or mounting of the cartridge, and the ejection of the sheet-shaped staples from the ejection port will not occur.
Can prevent clogging. After the attachment, the end portion can be easily removed by pulling the end portion, so that no trouble occurs in staple feeding.

Further, since the withdrawal prevention piece is temporarily fixed to the rear wall of the cartridge with glue or the like, the withdrawal prevention piece does not fall off during handling of the cartridge, and the end portion can be easily peeled off from the rear wall at the time of removal. .

[0014]

[Brief description of drawings]

FIG. 1 is a perspective view of a staple cartridge according to the present invention.

FIG. 2 is a stapler mounting view of a staple cartridge according to the present invention.

[Explanation of symbols]

 1 Staple Cartridge 2 Sheet-like Staples 2a Lowermost Sheet-like Staples 2b Uppermost Sheet-like Staples 3 Staple Storage Section 4 Front Wall 6 Bottom 7 Staple Receiving Section 9 Ejection Port 10 Pusher Device 12 Rear Wall 13 Protective Piece

Claims (2)

[Scope of utility model registration request] 1. A staple accommodating section 3 for accommodating a large number of sheet-shaped staples 2 formed by connecting unformed staples in a sheet form, and a discharge port 9 for supplying sheet-shaped staples in the lowermost layer is provided in front of the staple accommodating section. In the staple cartridge 1 arranged at the lower end of the wall 4, a pair of staple receiving portions 7, 7 for receiving both end portions of the lowermost sheet-like staple 2a are left and the staple storing portion 3
The bottom 6 of the sheet is opened, and the pusher device 10 for pressing the sheet-like staple is arranged on the uppermost sheet-like staple 2b, and from the back surface of the front wall 4 of the staple storing section through the lower surface of the sheet-like staple 2a of the lowermost layer. A staple cartridge comprising a sheet-shaped staple 2 withdrawal preventing piece 13 provided on an outer surface of a rear wall 12 of the staple storing section 3. 2. The staple cartridge according to claim 1, wherein the vicinity of the end of the pull-out preventing piece 13 located on the outer surface of the rear wall 12 of the staple storing portion 3 is attached to the rear wall 12 of the staple cartridge 1. .