JP4797962B2 - 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 is rotated. The opening and closing type upper cover is provided with a pressing plate and a pressing 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. 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. A staple cartridge of the type includes a base plate on which a refill container is placed, and an upper cover that is engaged with both left and right sides of the base plate across the refill container on the base plate and is slidable back and forth. A staple pressing arm is attached to the inner side face forward, and the front portion of the staple pressing arm is urged downward by a spring. The refill container is loaded on the upper surface of the staple sheet and a container portion for storing the staple sheet. Cover play And guide pins that protrude from the left and right side surfaces of the cover plate to the outside of the container part. By sliding the upper cover forward, the upper surface of the base plate is opened and the refill container can be attached and detached. A staple cartridge configured to slide the upper cover rearward so that the staple pressing arm elastically contacts the guide pin of the cover plate of the refill container and presses the cover plate and the staple sheet. It is to provide.

  The present invention also provides a staple cartridge in which the rear portions of the pair of left and right staple pressing arms are connected by a horizontal member.

  In the staple cartridge of the present invention, the refill container can be exchanged by sliding the upper cover. If the upper cover is returned to its original position after the exchange, the staple cartridge is fixed, and the staple presser arm attached to the upper cover fixes the inside of the refill container. The staple sheet is securely pressed. The refill container can be easily replaced by simply sliding the top cover, and the structure is simple and small and light.

  The present invention relates to a staple cartridge of an electric stapler, in which a refill container is mounted in a refill container replaceable staple cartridge using a refill container in which a plurality of linear sheets bonded in parallel is stacked and accommodated. A base plate and a reversing container on the base plate are engaged with the left and right side surfaces of the base plate, and an upper cover that is slidable back and forth is provided. Urging the front portion of the staple pressing arm downward, 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 a container from both the left and right sides of the cover plate. By sliding the upper cover forward, the upper surface of the base plate is opened and the refill container can be attached and detached by sliding the upper cover backward after loading the refill container. The staple pressing arm is configured to elastically contact the guide pin of the cover plate of the refill container to press the cover plate and the staple sheet, so that the replacement of the refill container is simple and the structure is simple, small and light. The objective of providing a cartridge has been achieved.

  FIG. 1 shows a staple cartridge 1 in which an upper cover 3 having a gate-shaped cross section is attached to a base frame 2, and a rear wall that surrounds the rear part of the refill container and the rear parts of both left and right sides at the rear part of the base frame 2 The portion 4 is formed, and the refill container is loaded between the front wall portion 5 and the rear wall portion 4 formed at the left and right centers of the front portion.

  Slide guide grooves 6 in the front-rear direction (left-right direction in the figure) are formed on the left and right side surfaces of the base frame 2, and the convex portions 7 provided on the inner side of the left and right side plates of the upper cover 3 are connected to the slide guide grooves 6. The upper cover 3 can be slid back and forth within the range of the slide guide groove 6 while being fitted.

  A portal lever 8 in which the upper part of a pair of left and right staple pressing arms 8a is connected by a lateral member 8b is disposed at a substantially front and rear intermediate portion in the upper cover 3, and is formed on the upper left and right side surfaces of the portal lever 8 The portion 8c is fitted into the bearing hole 9 on the inner side surface of the upper cover 3. In front of the portal lever 8, a spring hanging shaft 10 penetrating the left and right side plate portions of the upper cover 3 is disposed, and left and right by a tension coil spring 11 hung on the spring hanging shaft 10 and the lateral member 8b of the portal lever 8. The staple pressing arm 8a is urged in a direction in which the tip end portion is lowered and is pressed against the upper surface of the base frame 2. The tension coil spring 11 is in the center of the left and right sides of the upper cover 3 and should be indicated by a chain line, but is indicated by a solid line for easy viewing of the drawing.

  FIG. 2 shows a state in which the upper cover 3 is slid forward from the state of FIG. 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 having an open top surface, and a cover plate 23 is placed on the top surface. Yes. 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 container portion 22.

  FIG. 3 shows a state in which the refill container 21 is loaded into the staple cartridge 1, and the refill container 21 is positioned front and rear, right and left by the rear wall portion 4 and the front wall portion 5 of the base frame 2. When the upper cover 3 is slid rearward after the container is loaded, the left and right staple pressing arms 8a of the portal lever 8 come into contact with the guide pins 24 of the cover plate 23 of the refill container 21 as shown in FIG. The coil spring 11 is pushed up while being pulled. As a result, the cover plate 23 and the staple sheet S of the refill container 21 are pressed downward by the left and right staple pressing arms 8a of the portal lever 8, and the refill container 21 itself is also fixed.

  Although not shown, rectangular holes are formed in the bottom surfaces of the staple cartridge 1 and the refill container 21 as in the conventional type, and the staple cartridge 1 in which the refill container 21 is set as shown in FIG. When loaded, the feeding claw, which is a staple feeding mechanism of the electric stapler, elastically contacts the lower surface of the staple sheet S through the rectangular holes on the bottom surface of the staple cartridge 1 and the refill container 21. When the electric stapler is operated, the staple claw is reciprocated 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 of the base frame 2.

  As the staple sheet S in the staple cartridge 1 is consumed, the staple pressing arm 8a of the portal lever 8 pushes down the cover plate 23 in the refill container 21 by the spring force of the tension coil spring 11, and the staple sheet S is consumed up. Until the staple sheet S is pressed toward the lower feed claw, the staple sheet S is stably fed.

  When all the staple sheets S have been consumed, remove the staple cartridge 1 from the electric stapler, slide the upper cover 3 forward, replace the refill container 21 as described above, and slide the upper cover 3 backward to staple. It is only necessary to load the cartridge 1 into the electric stapler, and the refilling work is extremely simple.

  The portal lever 8 in the above embodiment has a shape in which the upper portions of the pair of left and right staple pressing arms 8a are connected by the horizontal member 8b. You may comprise so that it may move independently on either side.

  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 which shows one Embodiment of this invention. The side view of a staple cartridge which shows a refill container loading process. The side view of the staple cartridge and refill container which show 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 Top cover
6 slides
7 Convex
8 Portal lever
8a Staple holding arm
8b Horizontal member
8c Shaft
10 Spring hanging shaft
11 Tension coil spring
21 Refill container
22 Container section
23 Cover plate
24 Guide pin
25 Vertical groove

Claims (2)

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.
A base plate on which the refill container is placed and a refill container on the base plate that straddles the left and right side surfaces of the base plate and has an upper cover that is slidable back and forth. Attaching the arm forward, urging the front part of the staple pressing arm downward by a spring,
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,
By sliding the upper cover forward, the upper surface of the base plate is opened so that the refill container can be attached / detached. After the refill container is loaded, the upper cover is slid rearward so that the staple pressing arm is attached to the cover of the refill container. A staple cartridge, wherein the staple cartridge is configured to elastically contact a guide pin of the plate and press the cover plate and the staple sheet. 2. The staple cartridge according to claim 1, wherein the rear portions of the pair of left and right staple pressing arms are integrated by a horizontal member.

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