JP2003062764A - Staple cartridge in electric stapler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a staple cartridge in which jammed staples can be removed safely and easily and a disposable cartridge disposed of after use can be manufactured at low cost. SOLUTION: A stale cartridge 4 is provided with a cartridge body 6 accommodating a number of staples and a plastic face plate 10 which forms a drive-out passage 11 for the staples driven out to the front end of the cartridge body 6 by a driver. Support piece 12 are integrally formed toward the back from the both side ends of the face plate 10. Engaging projections 13 provided to the support pieces 12 are engaged in a recess 14 formed on both side surfaces of the front end of the cartridge body 6 so as to slidably and rotatably support the face plate 10 on the cartridge body 6.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric stapler which is detachable, accommodates a large number of staples, and forms a driving passage for driving the staples. Staple cartridge for an electric stapler. 2. Description of the Related Art In an electric stapler in which a driver is driven by driving a motor to sequentially eject staples loaded in a magazine, a large number of staples are loaded in order to facilitate loading of staples into the magazine. There is known a cartridge type in which a staple cartridge containing staples is mounted on a magazine portion of an electric stapler, and staples in the staple cartridge are sequentially driven out by a driver and stapled. The staple cartridge has a storage section for storing a large number of staples, and a punching path for punching one of the staples toward the binding sheet. The punching path is formed with a front wall of the storage section. It is formed between the magazine and a face plate attached to the front end of the magazine. A driver reciprocally driven by a motor provided on the main body side of the stapler enters the ejection passage of the cartridge, forms a staple facing the passage into a U-shape, ejects the staple, and staples legs penetrating the binding paper. The tip is bent by a clincher. [0003] By the way, in the above-described stapler,
The thickness of the binding paper is regulated according to the size of the staples to be used, and if the bound paper is inserted thicker than the regulated thickness, the staple legs ejected from the ejection passage by the driver It is rare that the binding paper cannot penetrate and buckle and jam in the ejection passage. In this case, in order to remove the jammed staples from the inside of the ejection passage, it is necessary to move or rotate the face plate to release the ejection passage. In the conventional cartridge, since the face plate is rotatably supported at the tip of the staple cartridge, a finger touches the needle tip of the clogged needle when rotating the face plate to remove the clogged needle. There was a risk of injury. Further, a fulcrum shaft for supporting the face plate and a mechanism for holding the fulcrum shaft are required, and the mechanism is complicated. This type of staple cartridge is designed so that staples contained in the cartridge are discarded after consumption, and there is a problem that a cartridge employing a complicated mechanism increases costs. According to the present invention, a jam staple jammed in a staple ejection path can be safely and easily removed, and furthermore, the staple can be manufactured at a low cost with a simple construction as a disposable cartridge to be discarded after use. It is an object of the present invention to provide a cartridge for use. In order to solve the above-mentioned problems, a staple cartridge according to the present invention comprises a cartridge body for accommodating a large number of staples, and a staple driving passage for driving a staple at a front end of the cartridge body. A support plate is integrally formed from both side edges of the face plate toward the rear, and protrusions formed on the support plate are formed on both sides of the front end of the cartridge body. The face plate is slidably and rotatably supported by the cartridge body. An embodiment of the present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 shows an electric stapler equipped with a staple cartridge of the present invention.
An electric stapler with a built-in device, which is incorporated in an apparatus such as a printing machine or a facsimile machine and automatically binds a predetermined number of sheets that have been copied, printed or received by facsimile. The electric stapler 1 accommodates an electric motor serving as a driving source, a driver driven by the electric motor, and a forming plate for forming staples in a lower portion of the frame 2. The upper portion of the frame 2 is driven by the driver. A clincher arm 3 that bends a leg of the staple penetrating the binding paper is swingably supported. As shown in FIGS. 2 and 3, the staple cartridge 4 is inserted from behind the frame 2 into a magazine formed between the clincher arm 3 and a driver. At the rear end of the staple cartridge 4, there is formed a knob 5 which is arranged so as to be exposed from the frame 2 in order to attach or detach the staple cartridge 4 to or from the frame 2. As shown in FIGS. 4 and 5, the staple cartridge 4 has a cartridge body 6 having a substantially U-shaped cross section and a large number of straight staple materials 7 a housed in the cartridge body 6 arranged and bonded. It comprises a flat sheet staple 7, a leaf spring 8 for pressing the sheet staple 7 against the bottom of the cartridge body 6, and a cover 9 for closing the opening on the upper surface. In this embodiment, the staple material 7a loaded in the staple cartridge 4 has a straight shape before being formed into a U-shape. It is shaped into a letter. In the figure,
Reference numeral 16 denotes an opening formed in the bottom of the cartridge main body 6 for engaging a claw of a feed mechanism for supplying the sheet staples 7 accommodated in the cartridge main body 6 forward with the lower surface of the sheet staples 7 in the cartridge. Reference numeral 17 denotes an opening for engaging a detector for detecting the presence or absence of a sheet staple in the cartridge with the sheet staple 7, and reference numeral 18 denotes a hook for fixing the staple cartridge 4 in a state of being mounted on the frame 2 of the electric stapler. is there. Reference numeral 19 denotes a non-return claw for preventing the sheet staple 7 sent to the left side in FIG. At the front end of the staple cartridge 4,
A face plate 10 is provided which forms a punching passage 11 for guiding staples which are punched out of the staple cartridge 4 by a driver toward a binding sheet in cooperation with a front wall of the cartridge body 6. The face plate 10 includes a support piece 12 integrally formed rearward from both side edges of the face plate 10, and a locking projection 13 formed inwardly inside the ends of both support pieces 12. The front end of the cartridge body 6 is engaged with the side surface. A recess 1 long in the front-rear direction corresponding to the support piece 12 is provided on both sides of the front end of the cartridge body 6.
A vertical ridge 15 is formed on the bottom surface of the central portion of the concave portion 14 so as to protrude from the bottom surface so as to bisect the concave portion in the front-rear direction. The locking projections 13 of both support pieces 12 of the face plate 10 are accommodated in the recesses 14 of the cartridge body 6, so that the face plate 10 is slidably and rotatably coupled to the cartridge body 6. As shown in FIG. 6, when the staple cartridge 4 is mounted on the electric stapler 1, the locking projection 13 formed on the support piece 12 of the face plate 10 engages with the recess 14 in the cartridge body 6. It is arranged on the rear end side (right side in FIG. 6) of the ridge 15, and in this state, an appropriate ejection passage 11 is formed by the face plate 10 and the front wall of the cartridge body 6. When the jammed staples are jammed in the ejection passage 11, the staple cartridge 4 is pulled out from the frame 2 of the electric stapler 1, and the locking projections 13 of the support pieces 12 of the face plate 10 are The face plate 10 is pulled out forward with respect to the cartridge main body 6 so that the locking projection 13 rides over the ridge 15 so as to be disposed on the front side (left side in FIG. 7) of the recess 14 by sliding the inside of the ejection passage. Open 11. Subsequently, as shown in FIG. 8, by rotating the face plate 10 about the locking projection 13, the front surface of the embossing passage 11 is opened and jam staples remaining in the embossing passage 11 are easily removed. It becomes possible. Further, since the face plate 10 is made of plastic, the face plate 10 is resilient. Even if the face plate 10 is merely pulled up from the state shown in FIG. Then, the state shown in FIG. 8 is obtained. In the staple cartridge of the present invention, the face plate 10 forming the ejection passage 11 is slidably and rotatably supported on the cartridge body 6 with respect to the cartridge body. Even if the staples are jammed, the pull-out operation and the rotation operation of the face plate 10 can be smoothly performed by a single operation, and the ejection passage 11 can be opened, and there is no risk of injuries due to the fingertips touching the jam staples. Can be safely and easily removed. Further, a simple configuration in which the support pieces 12 having the locking projections 13 formed from both side edges of the face plate 10 are integrally formed, and the locking projections 13 are fitted into the recesses 14 formed in the cartridge body 6. Therefore, the manufacturing cost can be reduced and an inexpensive staple cartridge can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electric stapler equipped with a staple cartridge of the present invention. FIG. 2 is a side view of a staple cartridge of the same embodiment. FIG. 3 is a top view of a staple cartridge of the same embodiment. 4 is a vertical sectional side view of the staple cartridge of the present invention. FIG. 5 is an exploded perspective view of the staple cartridge of the present invention. FIG. 6 is a cross-sectional plan view of a main part of the staple cartridge in which a face plate is arranged in a normal state. FIG. 7 shows a state in which the face plate is slid.
[FIG. 8] Cross-sectional plan view same as FIG. 6 with the face plate further rotated from the state shown in FIG. 7 [Description of symbols] 1 Electric stapler 2 Frame 3 Clincher arm 4 Staple cartridge 5 Knob 6 Cartridge Main body 7 Sheet staple 8 Leaf spring 9 Cover 10 Face plate 11 Launch passage 12 Supporting piece 13 Locking projection 14 Depression 15 Convex ridge

Claims (1)

Claims 1. A staple contained in a staple cartridge is driven toward a binding sheet by a driver driven by a motor, and legs of the staple penetrating the binding sheet are arranged to face the driver. In an electric stapler that is bent by a clincher, the staple cartridge includes a cartridge body that accommodates a large number of staples, and a plastic face that forms a staple ejection passage that is ejected by the driver at a front end of the cartridge body. A support plate is integrally formed from both side edges of the face plate toward the rear, and a projection formed on the support piece is engaged with a recess formed on both sides of the front end of the cartridge body. Slide and rotate plate to car Staple cartridge in an electric stapler which is characterized in that is supported on the ridge body.