JP4807243B2 - Staple cartridge - Google Patents

Description

  The present invention relates to a staple cartridge used for an electric stapler, and particularly to a staple cartridge provided with a staple pressing mechanism.

  Electric staplers and stand-alone electric staplers incorporated in copiers, binding processors, etc. are detachable from the cartridge for the convenience of staple replenishment. The cartridge is replaced with a cartridge, or a staple sheet is loaded into the staple cartridge and mounted on the electric stapler again (Patent Documents 1, 2, 3, etc.).

  Regarding replenishment of staple sheets, a conventional electric stapler is generally of a type in which the entire staple cartridge is replaced, but in recent years, a staple cartridge stacked and accommodated in a refill container is loaded into the staple cartridge. As a structure, there are many structures in which staple cartridges can be used repeatedly (for example, Patent Documents 4 and 5).

  Regarding the loading of the staple cartridge into the electric stapler, an upper loading type electric stapler (for example, FIGS. 28 to 30 of Patent Document 3) having a loading port on the upper surface and a rear loading type having a loading port on the back surface. There is an electric stapler (for example, FIG. 9 of Patent Document 4).

Further, as means for pressing the staple sheet in the staple cartridge or the refill container to the inner bottom surface, a pressing plate or a pressing arm provided on the staple cartridge itself (for example, Patent Document 6), and a pressing force comprising a spring and a lever. There is a device provided on the electric stapler side (for example, “arm member 106” in Patent Document 4). However, since the upper loading type electric stapler has an open upper surface, a staple pressing means is provided on the electric stapler side. It is difficult to provide the staple cartridge, and the staple cartridge is provided with staple pressing means.
Japanese Unexamined Patent Publication No. Hei 9-93044 Japanese Patent Laid-Open No. 11-99505 Japanese Patent Laid-Open No. 11-235679 JP 2004-237446 A JP 2006-116637 A JP-A-6-218676

  In order to reduce the unit size of the electric stapler, it is advantageous to arrange the staple pressing means described above not on the electric stapler side but on the staple cartridge itself. However, the staple cartridge provided with the conventional staple pressing means can be opened and closed. The top cover is provided with a pressure plate and a pressure arm, and the housing structure is complicated. It is also preferable that the refill container can be replaced more easily. Therefore, there is a technical problem to be solved in order to provide a staple cartridge that has a simpler structure, is smaller and lighter, and can be easily replaced with a refill container. The present invention aims to solve the above problem. To do.

  The present invention proposes to achieve the above object, and is a staple cartridge for an electric stapler, which is a refill container replacement using a refill container in which a plurality of linear staples bonded in parallel is stacked and stored. In the staple cartridge of the type, the staple pressing levers are respectively attached to the front portions of the left and right side surfaces of the container housing portion, and the staple pressing lever is urged rearward by a spring and straddles the container housing portion from side to side. A knob is provided that engages with the left and right side surfaces of the housing portion and is slidable back and forth, and by sliding the knob forward, the staple pressing lever is pushed by the knob to stand up, and by sliding the knob backward, Shaped so that the staple holding lever turns backward The refill container includes a container portion that accommodates the staple sheet, a cover plate that is stacked on the upper surface of the staple sheet, and guide pins that protrude from the left and right side surfaces of the cover plate to the outside of the container portion. Replace the refill container with the staple holding lever upright and slide the knob back, so that the staple holding lever is elastically contacted with the guide pin of the cover plate of the refill container. A staple cartridge is provided that is configured to press the staple sheet.

  In the staple cartridge of the present invention, the staple pressing levers provided on both the left and right sides elastically contact the guide pins of the cover plate placed on the staple sheet of the refill container to press the staple sheet, and the staple cartridge itself is fixed. If you slide the knob that engages both the left and right sides of the staple cartridge to the front, the knob pushes the staple holding lever up and you can replace the refill container. The cartridge is fixed. The refill container can be easily replaced only by sliding the knob, and the structure is simple and small and light.

  According to the present invention, a staple pressing lever is attached to the front of the left and right side surfaces of the container housing portion of the staple cartridge, and the staple pressing lever is urged rearward by a spring. A knob is provided that engages with both the left and right side surfaces of the housing portion and is slidable forward and backward. By sliding the knob forward, the staple pressing lever is pushed up by the knob, and the staple is moved backward by sliding the knob. The presser lever is formed so as to turn backward. The refill container includes a container unit that stacks and stores staple sheets in which a large number of linear staples are bonded in parallel, a cover plate that is stacked on the upper surface of the staple sheet, and from the left and right side surfaces of the cover plate to the outside of the container unit. A protruding guide pin is provided. When the knob is slid forward, the staple presser lever is raised by being pushed by the knob, and the refill container is exchanged in that state. By sliding the knob backward, the staple presser lever is moved to the guide pin of the cover plate of the refill container. The purpose of providing a staple cartridge that is easy to replace the refill container, is simple in structure, and is small and light weight is achieved by elastically contacting the staple sheet in the refill container.

  In FIG. 1, 1 is a staple cartridge, and 21 is a refill container. In the base frame 2 of the staple cartridge 1, a relatively thin box-shaped refill container accommodating portion 3 in which the refill container 21 is loaded and a staple guide portion 4 protruding forward (left in the figure) from the front end are integrated. It is a resin molded product.

  5 is a gate-type knob that straddles the left and right sides of the refill container housing part 3, and the front and rear sides of the convex parts 6 provided on the inner side surfaces of the left and right legs of the knob 5 are formed on the left and right side surfaces of the refill container housing part 3. The knob 5 can be slid back and forth within the range of the slide guide groove 7.

  Staple pressing levers 9 are respectively attached to the lever support shafts 8 that are symmetrically disposed on the left and right side surfaces of the front end portion of the refill container accommodating portion 3, and the spring hooking portion 10 on the side of the tip of the staple pressing lever 9 and A tension coil spring 12 is hung on the spring hooking portions 11 on both side surfaces of the rear portion of the refill container housing portion 3 to urge the staple pressing lever 9 backward.

  In the refill container 21, dozens of staple sheets S in which a large number of linear staples are bonded in parallel are stacked in a box-shaped container portion 22 whose upper surface is open, and a resin cover plate 23 is placed on the upper surface. It is on. Guide pins 24 are provided in the vicinity of the front ends of the left and right side surfaces of the cover plate 23, and the guide pins 24 of the cover plate 23 protrude outward through vertical grooves 25 formed on the left and right side surfaces of the refill container 21.

  FIG. 1 shows a state in which the knob 5 of the staple cartridge 1 is slid forward. The front end surfaces of the left and right legs of the knob 5 push the staple pressing lever 9 to stand vertically, and the tension coil spring 12 is extended. When the staple pressing lever 9 is raised, the refill container 21 can be loaded into the refill container accommodating portion 3 of the base frame 2 from the upper rear side of the staple cartridge 1. FIG. 2 shows a state in which the staple cartridge 21 is loaded.

  When the knob 5 is slid rearward as shown in FIG. 3, the staple pressing lever 9 is turned backward by the force of the tension coil spring 12, and the staple pressing lever 9 is pressed against the guide pin 24 of the cover plate 23 of the refill container 21. Then, the cover plate 23 is pressed downward, the staple sheet S in the refill container 21 is pressed, and the staple cartridge 1 itself is fixed.

  The staple cartridge 1 can be attached to and detached from the cartridge chamber of the electric stapler (not shown) by grasping the knob 5, and when the staple cartridge 1 in which the refill container 21 is set as shown in FIG. A feeding claw as a mechanism elastically contacts the lower surface of the staple sheet S through a rectangular hole (not shown) formed in the bottom surface of each of the staple cartridge 1 and the refill container 21. When the electric stapler is operated, the feeding claw reciprocates back and forth in conjunction with the driving operation of the driver, so that the staple sheets S are sequentially fed toward the front end through the staple guide portion 4.

  As the staple sheet S in the staple cartridge 1 is consumed, the staple pressing lever 9 pushes down the cover plate 23 in the refill container 21 by the tension coil spring 12, and the staple sheet S is moved downward until the staple sheet S is completely consumed. By pressing toward the feeding claw, the staple sheet S is stably fed.

  When all the staple sheets S have been consumed, the knob 5 is grasped and the staple cartridge 1 is removed from the electric stapler, and the knob 5 is slid forward as shown in FIG. 2 to replace the refill container 21. In addition, the knob 5 may be slid rearward to load the staple cartridge 1 into the electric stapler, and the refill replenishment operation is extremely simple.

  The present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and it is natural that the present invention extends to those modifications.

The side view of the staple cartridge and the refill container according to the embodiment of the present invention. The side view of a staple cartridge which shows a refill container loading process. Side view of staple cartridge showing completion of refill container loading

Explanation of symbols

1 Staple cartridge
2 Base frame
3 Refill container housing
4 Staple guide section
5 Knob
6 Convex
7 Slide guide groove
9 Staple holding lever
12 Tension coil spring
21 Refill container
22 Container section
23 Cover plate
24 Guide pin
25 Guide groove

Claims (1)

In an electric stapler staple cartridge, a refill container replaceable staple cartridge that uses a refill container in which a plurality of linear sheets bonded in parallel is stacked and stored.
At the front part of the left and right side surfaces of the container housing part, the staple pressing levers are mounted upward, respectively, and the staple pressing lever is urged rearward by a spring and straddles the container housing part from side to side. The staple pressing lever is pushed up by the knob when it is slid forward, and the staple pressing lever is moved backward by sliding the knob backward. Shaped to turn over,
The refill container includes a container portion for storing the staple sheet, a cover plate stacked on the upper surface of the staple sheet, and guide pins that protrude from the left and right side surfaces of the cover plate to the outside of the container portion,
The refill container is exchanged in a state where the knob is slid forward and the staple pressing lever is raised, and the staple pressing lever is elastically contacted with the guide pin of the cover plate of the refill container by sliding the knob backward. A staple cartridge configured to hold the staple sheet in the refill container.

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