JP4882675B2 - Staple cartridge - Google Patents

Description

  The present invention relates to a staple cartridge used in an electric stapler, and more particularly to a staple cartridge in which refill containers can be easily removed in a refill container replaceable staple cartridge.

  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, the original electric stapler was generally of a type that replaces the entire staple cartridge. However, in recent years, the staple cartridge is loaded with a stack of staple sheets stacked in a refill container. As a structure, there are many structures in which staple cartridges can be used repeatedly (for example, Patent Documents 4 and 5).

  7 and 8 show an example of a refill container exchangeable staple cartridge, 1 is a staple cartridge, FIG. 9 shows a refill container 21 loaded in the staple cartridge 1, and the staple cartridge 1 and the refill container 21 are Both are made of plastic. The staple cartridge 1 includes a base frame 2 and an upper cover 3 that covers the upper surface of the base cartridge 2. The upper cover 3 is connected to a shaft 5 provided at the lower rear end of the left and right side plate portions 4 of the base frame 2, and is Outward hooks 6 provided on the left and right sides of the front end portion of the cover 3 are engaged and fixed to the holes 7 of the left and right side plate portions 4 of the base frame 2 from the inner surface side.

  On both the left and right sides of the upper cover 3, hook-shaped levers 8 (the lower end can be rotated rearward and urged to the front initial position in FIG. 7 by the compression coil spring 9 in FIG. 8) are attached. When the staple cartridge 1 is mounted on the electric stapler, the hook type lever 8 engages with the engaging portion of the electric stapler, and the staple cartridge 1 is fixed.

  Depending on the orientation of the electric stapler, the staple cartridge 1 may be attached to the electric stapler in the upright posture of FIG. 7 or may be attached in an inverted posture that is upside down from FIG. When attaching to and detaching from the electric stapler, the handle portion 10 provided at the rear end of the upper cover 3 is grasped and inserted into or pulled out from the electric stapler.

  When replenishing staples to the staple cartridge 1 removed from the electric stapler, if the front end portions of the left and right side surfaces of the upper cover 3 are clamped with two fingers, the hook 6 becomes the holes 7 on the left and right side surfaces of the base frame 2. If the front part of the upper cover 3 is lifted off as it is, the upper cover 3 is turned backward as shown in FIG. 8, the upper surface of the base frame 2 is opened, and the refill container 21 is exposed. A pressing lever 11 is attached to the lower surface of the upper cover 3 (the upper surface in FIG. 8), and the pressing lever 11 is urged to the rising position of the drawing by the torsion coil spring 12 in FIG. At times, the staple sheet in the refill container 21 is pressed by elastically contacting the upper surface of the refill container 21.

After the upper cover 3 is opened, as shown in FIG. 10, the refill container 21 can be lifted up by sandwiching the removal knob 22 provided at the rear of the left and right sides of the refill container 21 with two fingers. The hinge part 23 at the upper rear end of the 21 is elastically deformed so that the knob part 22 rotates with the hinge part 23 as a fulcrum, and the lock plate 24 that is integrated with the knob part 22 and is located at the lower rear end part of the refill container 21 is Rotate forward (left in FIG. 10). As a result, the engagement between the convex portion 13 formed at the lower end of the rear wall of the base frame 2 of the staple cartridge 1 and the hole 25 of the lock plate 24 is released, and the rear portion of the refill container 21 is lifted to refill the container 21. Can be pulled out diagonally upward. Then, a new unused refill container is inserted into the staple cartridge 1, the upper cover 3 is closed, and the staple cartridge 1 is loaded into the electric stapler to complete the staple replenishment.
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

  The conventional refill container replacement type staple cartridge requires two operations, upper cover opening operation and unlocking of the refill container, until the refill container is taken out. Sometimes I am confused.

  Therefore, there is a technical problem to be solved in order to make it easier to take out the refill container and improve the workability of refill container replacement in the staple cartridge, and the present invention solves the above problem. With the goal.

  The present invention is proposed to achieve the above object, and is a staple cartridge including a base plate loaded with a refill container containing staple sheets, and a hinge-type upper cover covering an upper surface opening of the base plate. The lock plate included in the refill container includes a lock mechanism that engages with a protrusion or a claw provided on the base plate to fix the refill container. By rotating the lock plate, the protrusion of the lock plate and the base plate is provided. In a staple cartridge having a structure in which the refill container can be exchanged by releasing the coupling with the part or the claw, a claw is provided on the upper cover as a pressing means for the lock plate of the refill container, and the claw is locked when the upper cover is opened. Press the plate to fix the refill container With releasing the, there is provided a staple cartridge which is characterized by being configured to lift the refill container.

  A staple cartridge having a base plate loaded with a refill container containing a staple sheet, a hinge-type upper cover that covers an upper surface opening of the base plate, outward hooks provided on the left and right sides of the upper cover, and a base plate In the staple cartridge that constitutes the lock mechanism of the upper cover by the holes formed in the side plate portion of the base plate, a slide plate that is slidable up and down is interposed between the left and right side plate portions of the base plate, and the slide plate raising and lowering positions of the left and right side plate portions The upper and lower side plates of the base plate are manually lifted by the slide plate, and the hooks of the upper cover and the holes of the side plate of the base plate engage with each other. So that the top cover can be opened. There is provided a staple cartridge, characterized in that the.

  When the upper cover is opened, the staple cartridge of the present invention is provided with a claw as a means for pressing the lock plate of the refill container in the staple cartridge on the upper cover of the staple cartridge. In addition, since the refill container is pushed up, the refill container can be taken out only by the upper cover opening operation, the refill container unlocking operation is unnecessary, and the refill container can be easily replaced.

  Further, the present invention is such that a slide plate that is slidable up and down is interposed between the left and right side plate portions of the base plate constituting the staple cartridge, and the slide plate ascending / descending portions of the left and right side plate portions are gradually narrowed at the upper portion. In the staple cartridge, the left and right side plate parts of the base plate are pushed and opened by the slide plate by manually raising the slide plate, so that the hook of the upper cover and the hole of the side plate part of the base plate are disengaged. It is easy to unlock.

  Also, by combining this upper cover unlocking mechanism with the above-mentioned refill container unlocking mechanism using claws, refill container replacement work becomes extremely easy, and even those without knowledge of the operation procedure can definitely take out the refill container Can do.

  A staple cartridge having a base plate loaded with a refill container containing staple sheets and a hinge-type upper cover that covers an upper surface opening of the base plate, wherein the lock plate provided in the refill container has a convex portion or a claw provided on the base plate The refill container can be replaced by rotating the lock plate and releasing the coupling between the lock plate and the projections or claws of the base plate. In the staple cartridge, a claw is provided on the upper cover as a pressing means for the lock plate of the refill container.

  With the above configuration, when the upper cover is opened, the claw presses the lock plate to release the refill container, and the refill container can be lifted and taken out, so that the refill container can be taken out more easily. The goal of improving replenishment workability was achieved.

  FIG. 1 is a side view of a staple cartridge 31 of the present invention, FIG. 2 is a side perspective view in which refill containers 21 in the staple cartridge 31 are displayed in an overlapping manner, and the refill container 21 is the conventional type shown in FIG. The difference between the staple cartridge 31 of the present invention and the conventional staple cartridge 1 shown in FIG. 7 is that the staple cartridge 31 of the present invention is provided with a slide plate 34 for opening and closing the upper cover 33 at the front end portion of the base frame 32. This is that the left and right side plate portions 35 of the upper cover 33 are provided with claws 36 as a refill container removal mechanism. The upper cover mounting shaft 5 at the lower end of the rear portion of the base frame 32, the hook-type lever 8 disposed on the side surface of the upper cover 33, the handle portion 10 of the upper cover 33, and the pressing lever 11 in FIG. Therefore, the same reference numerals are given.

  The base plate 32 is composed of a bottom plate portion 37 and left and right side plate portions 38. As shown in FIG. 3, longitudinal slide guide grooves 39 are formed on the inner surfaces of the front ends of the left and right side plate portions 38. A slide plate 34 is engaged with 39. The upper part of the inner surface of the front end of the left and right side plate portion 38 of the base plate 32 narrows in a stepwise manner through an inclined surface 40 like a vertical straight cam, and the left and right side surfaces of the slide plate 34 are also within the front end of the base plate 32. The width of the upper part is narrowed stepwise through the inclined surface 41 in symmetry with the side shape. Reference numerals 42 denote outward hooks formed on the left and right sides of the front end of the upper cover 33 as in the conventional type of FIG. The upper cover 33 is fixed in a closed state.

  Finger slides 44 projecting forward are formed on the front surface of the slide plate 34, and when the slide plate 34 is lifted by placing a finger on the lower surface of the finger hooks 44, the left and right inclined surfaces 41 of the slide plate 34 become the base plate 32. The left and right side plate portions 38 of the base plate 32 are pushed outward by the cam action of the inclined surfaces 40 and 41. As a result, the hook 42 of the upper cover 33 is released from the holes 43 of the left and right side plate portions 38 of the base frame 32, and the front portion of the upper cover 33 is lifted by the elastic force of the holding lever 11 shown in FIG. As shown, the claw 36 formed on the front surface (left side in the drawing) of the left and right side plate portions 35 of the upper cover 33 hits the lower edge of the knob portion 22 for removing the refill container 21.

  FIG. 5A shows the side plate portion 35 of the upper cover 33, and FIG. 5B is a cross-sectional view taken along line AA of the claw 36 in FIG. The claw 36 has a downward wedge surface 36a on the side facing the side surface of the refill container.

  When the upper cover 33 is further lifted from the state shown in FIG. 4, the claw 36 pushes up the knob 22 of the refill container 21, and the base of the staple cartridge 31 is the same as the base frame 2 of the staple cartridge 1 as shown in FIG. The hole 25 of the lock plate 24 of the refill container 21 is released from the convex portion 13 provided in the frame 32. As shown in FIG. 6, when the upper cover 33 is further rotated and reversed backward, the claw 36 lifts the rear portion of the refill container 21 along with the rotation of the upper cover 33, and the refill container 21 can be removed. It becomes a state.

  When the refill container 21 is replaced and the upper cover 33 is closed from the upper cover open state in FIG. 6, as the upper cover 33 rotates, the holding lever 11 hits the upper surface of the refill container 21, and the refill container 21 is moved downward. The refill container 21 is locked to a predetermined position by pressing, and the downward wedge surface 36a of the nail 36 hits the back surface of the knob 22 of the refill container 21, and as shown by the arrow in FIG. It bends outward and gets over the knob 22 and the upper cover 33 is closed to the state shown in FIG. The claw 36 that has climbed over the knob 22 has been restored from the bent state to the initial position inside, and in the state of FIG. 1, the knob 22 of the refill container 21 is positioned vertically above the claw 36, as described above. When the upper cover is opened, the knob 22 of the refill container 21 is pushed up from below by the claw 36, and the lock of the refill container 21 is released.

  In this way, when the top cover is opened, the refill container is unlocked and can be immediately removed. Unlike the conventional type that requires the top cover opening operation and the refill container unlocking operation, the top cover The refill container can be taken out only by opening operation.

  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. FIG. 2 is a side perspective view of the staple cartridge of FIG. 1. FIG. 2 is a front view of the staple cartridge of FIG. 1. FIG. 3 is a side perspective view showing an upper cover opening process of the staple cartridge of FIG. 1. (a) is a side view of the side plate portion of the staple cartridge, and (b) is a cross-sectional view taken along line AA in (a). FIG. 3 is a side perspective view showing an upper cover open state of the staple cartridge of FIG. 1. The perspective view of a staple cartridge which shows a prior art example. The perspective view which shows a prior art example and shows the upper cover open state of a staple cartridge. The side view of a refill container. Sectional drawing which shows the locking mechanism part of a refill container.

Explanation of symbols

5 (base frame) axis
8 Hook type lever
10 Handle section
11 Holding lever
13 Convex (base frame)
21 Refill container
22 Pick section
23 Hinge
24 Lock plate
25 holes
31 Staple cartridge
32 Base frame
33 Top cover
34 Slide plate
35 Side plate (on top cover)
36 nails
37 Bottom plate (base frame)
38 Side plate (base frame)
39 Slide guide groove
40 Inclined surface (base frame)
41 Inclined surface (on top cover)
42 hook
43 holes
44 Finger rest (of slide plate)

Claims (2)

A staple cartridge having a base plate loaded with a refill container containing a staple sheet and a hinge-type upper cover that covers an upper surface opening of the base plate, wherein a lock plate provided in the refill container includes a convex portion provided on the base plate or A lock mechanism is provided that engages with the claw to fix the refill container. By rotating the lock plate, the coupling between the lock plate and the convex portion of the base plate or the claw is released, and the refill container can be replaced. In the staple cartridge of the structure,
A claw is provided on the upper cover as a pressing means for the lock plate of the refill container, and when the upper cover is opened, the claw pushes the lock plate to release the refill container and lifts the refill container. Feature staple cartridge. A staple cartridge having a base plate loaded with a refill container containing a staple sheet, a hinged upper cover that covers an upper surface opening of the base plate, outward hooks provided on the left and right sides of the upper cover, and side plates of the base plate In the staple cartridge in which the lock mechanism of the upper cover is configured by the hole formed in the section,
A slide plate that is slidable up and down is interposed between the left and right side plate portions of the base plate, and the slide plate raising and lowering portions of the left and right side plate portions gradually narrow in the upper part, and by manually raising the slide plate, A staple cartridge, wherein the left and right side plate portions of the base plate are pushed open by a slide plate to disengage the hooks of the upper cover from the holes in the side plate portions of the base plate so that the upper cover can be opened.

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