JPS641278B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a staple cartridge in an electric stapler.

(Prior art) Recently, a new type of electric stapler has been developed in which a sheet staple is formed by connecting a large number of wire staples in a sheet shape with adhesive, and is formed into a U-shape in a magazine, and then driven into the binding paper material. Stapling is suggested. In this case, the sheet-like staples are stored in the staple cartridge 30 as shown in FIG. Sent off to the 33rd. As shown in Figure b, the needle cartridge 30 has a cartridge cover 34 and a magazine 35.
It was used by being attached to and detached from an adapter 36 which was pivotally attached to the holder. The adapter 36 has a pusher 37 inside.
and a pusher spring 38, which is pivotally attached to the rear end of the staple cover 34 in the forming/driving section of the magazine 35.The needle cartridge 30 is mounted inside, and the pusher 37 is attached to the staple cover 34 of the forming/driving section of the magazine 35.
Press the sheet-like staples S in the staple cartridge 30 through the opening 39 provided at the top of the cartridge, and when there are no more staples S in the cartridge 30, rotate the adapter 36 to remove the staple cartridge 30.
It was configured to be replaced with a new one.

However, such a cartridge configuration has a large number of parts and a very complicated structure. In addition, when a portion of the sheet staple S protrudes from the outlet 31 of the staple cartridge 30, the staple cartridge 30 cannot be removed. If you try to remove the staple cartridge 30 along with the adapter 36, the protruding portion of the staple S is held under the bottom 41 of the staple cover 40 fixed to the magazine 35, so the staple cartridge 30 cannot be easily removed. If force is applied to the sheet staple, it will break or bend. Therefore, it was extremely difficult to handle.

(Technical Problem of the Invention) The present invention was developed in view of the above circumstances, and an object of the present invention is to propose a staple cartridge for an electric stapler that has a particularly simple structure and is easy to attach and detach.

(Technical Means for Solving the Problems) The staple cartridge in the electric stapler according to the present invention has sheet-shaped staples formed by connecting a large number of wire-shaped staple needles with adhesive and stacking them in multiple stages. a U-shaped weight removably provided on the upper part of the sheet-like staple in the main body; a sheet-like staple outlet provided at the lower front of the main body; It is characterized in that it is provided with a guide member that guides at least one sheet of sheet-like staples that continuously protrudes from the upper part of the outlet, and that it is removably installed in the magazine.

(Example) An example of implementing the present invention will be described below with reference to the drawings.

In the figure, symbol A indicates a needle cartridge. This staple cartridge A includes a main body 1 having a storage section capable of accommodating sheet-like staples S formed in a sheet-like manner by connecting a large number of wire-like staple needles with an adhesive, stacked in multiple stages, and the main body 1 a U-shaped weight 2 that is removably provided on the upper part of the sheet-like staple S in the main body 1; and an outlet 3 for the sheet-like staple S that is provided on the lower front side of the main body 1;
It is equipped with a guide member 4 that guides at least one sheet of sheet-like staples S continuously protruding from the upper part of the outlet port 3, and a mounting piece 5 for attaching and detaching it into the magazine 10. , each of the above components will be explained in detail.

First, the staple cartridge main body 1 has a storage section for sheet-like staples S, the upper part of which is open, and engaging claws 6, 6 are formed on opposite sides of the upper end. In addition, the bottom part also has a holding protrusion 7 on the opposing inner side,
All but 7 (Figure 2) are open. The sheet-like staples S are loaded from the top and stored and held on the holding protrusions 7, 7 at the bottom.

Next, the weight 2 is formed into a U-shape by providing upright pieces 2b, 2b on both sides of a base piece 2a that fits inside the needle cartridge body 1, and the diagonal corners of the base piece 2a are A notch 9 is formed.
The weight 2 is fitted into the staple cartridge A by pushing out the engagement claws 6, 6, and presses the sheet-like staples S stored in the main body 1 with its weight. When there are no more sheet-like staples S in the main body 1, the weight 2 is taken out from the upper part again and is attached after storing the staples.

Guide members 4, 4 provided continuously above the outlet 3 for the sheet-like staples S provided at the lower front surface of the main body 1, guide the upper surface of the sheet-like staple S sent out from the outlet 3 as described below. It guides toward the forming/driving device, and has a length to guide at least one sheet of sheet-like staples S, and has an engaging recess 11 formed at the lower part of its tip.

The attachment piece 5 is provided to protrude downward from both outer surfaces of the cartridge body 1, and has a locking portion 12 formed inside its tip.

Next, the needle cartridge A having the above structure is attached to the magazine 10 of the electric stapler B. This electric stapler B has a magazine 10 pivotably mounted on a base 50, a staple feeding device is provided at the rear of the magazine 10, and a staple forming/driving device is provided at the front of the magazine 10.
These staple feeding devices and forming/driving devices are driven by driving means (not shown) such as an electric motor provided on the base 50. The needle cartridge mounting portion of the magazine 10 has a locking receiving portion 1 for the mounting piece 5 of the needle cartridge A.
3, a reflective photo sensor 14 is attached to the lower part of the magazine 10, and a staple cover 15 is provided at the front of the magazine 10. The reflective photo sensor 14 is mounted so as to face the notch 9 of the weight 2 of the needle cartridge A mounted on the magazine 10. The staple cover 15 is provided with a forming/driving device, and its bottom surface is configured as a staple guide surface.

When attaching the staple cartridge A to the magazine 10, the engagement recess 11 at the tip of the guide member 4 of the cartridge A is engaged with the lower rear end of the staple cover 15, and the locking portion at the tip of the mounting piece 5 is engaged. 12 is locked to the locking receiving part 13 of the magazine 10. This ensures that the needle cartridge A is installed in a predetermined position. At this time, the guide member 4
The lower surface and the bottom surface of the staple cover 15 constitute a continuous guide surface.

The staple feeding device sequentially feeds staples from the staple cartridge A installed in the magazine 10 to the staple forming/driving device starting from the lowest one. For example, as shown in FIG. 4, the staple cartridge A of the magazine 10 A magnet 16 is provided at the lower part of the mounting part of the magnet 16, a feed belt 18 is stretched around pulleys 17 provided at the front and rear of the magnet 16, and one pulley 17 is connected to an electric motor (not shown) on a base 50. What is necessary is just to adopt the structure linked via a belt.

In addition, the staple forming/driving device forms the sheet staple S into a U-shape, and
The shaped staple is driven into a binding paper material (not shown). As such a staple forming/driving device, for example, magazine 1
A holder 21 is provided at the front part of the plate holder 21 so as to be movable up and down by a link mechanism or a solenoid mechanism linked to the electric drive means, and a forming plate 22 and a driver plate 23 are attached to the plate holder 21 in a superimposed manner, At the same time as the staple feeding device is driven, the holder 21 is moved downward, the second staple from the leading edge is formed into a U-shape by the forming plate 22, and the leading edge staple thus formed is moved by the driver. The plate 23 may be used for driving, and then the holder 21 may be moved upward.

Next, how the staple cartridge A having the above structure is used will be explained together with the illustrated electric stapler B.

First, staples are loaded into the staple cartridge A, and the weight 2 is attached thereon. Then, this needle cartridge A is locked and attached to the needle cartridge mounting portion of the magazine 10. Thereby, the feeding means 5 is located under the bottom opening 16 of the needle cartridge A.
The upper surface of the feed belt 18 contacts the lower surface of the sheet-like staple S in the lowest stage in the staple cartridge A. Furthermore, a reflective photo sensor 14 at the bottom of the needle cartridge A attachment section
faces the notch 9 of the weight 2 of the needle cartridge A.

Next, when paper materials for binding are set on the binding base 24 and the operating switch is turned on to operate the electric drive means, the driving force is transmitted to the pulley 17 of the staple feeding device, and the fourth pulley 17 The belt 18 rotates in the direction of the arrow in the figure. The lowest sheet staple S in the staple cartridge A is strongly attracted by the magnet 16, so as the belt 18 moves, the lowest sheet staple S also moves and is removed from the front outlet 3 of the staple cartridge A. The staple is delivered and fed to a staple forming and driving device, where it is formed and driven into the binding material.

When the driving of staples progresses and the entire lowermost sheet staple S in the staple cartridge A is fed out of the staple cartridge A, the sheet staple S in the next stage is lowered and fed out in the same manner as described above. and engages with the rear end of the previous sheet-like staple S. When all the sheet-like staples have come out of the staple cartridge A, disturbance light enters from the notch 9 of the weight 2 in the staple cartridge A, and is reflected by the reflective photo provided at the bottom of the staple cartridge A attachment part. The sensor 14 detects that there are no more staples, and activates a buzzer or the like or stops driving the stapler B.

According to the above-mentioned cartridge A configuration, the guide member 4 of the staple cartridge A is formed to have a length that guides at least one sheet of staples, so even if some of the lowest staples from the staple cartridge A Even if the needle cartridge protrudes, the protruding portion is guided by the guide member 4, so this protruding portion is also removed together with the needle cartridge A. Therefore, the needle cartridge A can be easily removed at any time and is very easy to handle.

Further, the staples in the staple cartridge A are pressed downward by the weight of the weight 2, and there is no need for a pusher, pusher spring, etc. as in the prior art.
In addition, weight 2 can also be used as the lid of needle cartridge A, and since it is formed in a U-shape, weight 2 will always remain in the same position even if needle cartridge A is tipped over or turned upside down. Therefore, the staples will not fall or tilt.

Furthermore, the needle cartridge A is an adapter,
Since members such as staple pushers and pusher springs are not required, the structure is much simpler than conventional staple cartridges.

Note that the means for attaching and detaching the needle cartridge A to and from the magazine 10 does not necessarily need to be provided on the cartridge like the attachment piece 5 of the above configuration. For example, a configuration may be adopted in which a presser spring (not shown) that is biased downward is provided on the magazine side, and the upper end surface of the needle cartridge is elastically engaged with and disengaged from the presser spring.

(Effects of the Invention) As explained in detail above, according to the staple cartridge in the electric stapler according to the present invention,
Since the structure is very simple, it can be made smaller, and the electric stapler itself can be made smaller. Also, the staple cartridge should contain at least one staple.
A guide member is provided to guide the sheet, so
The staple cartridge can be attached or detached at any time regardless of whether or not the staples are protruding from the staple cartridge. Furthermore, since the weight is U-shaped, it is possible to maintain the staple in the correct orientation within the staple cartridge. Therefore, it has great practical effects.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main parts of the magazine and the staple cartridge in the electric stapler according to the present invention, FIG. 2 is a vertical cross-sectional view of the staple cartridge, FIG. 3 is a plan view of the staple cartridge seen from above, and FIG. The figure is a longitudinal sectional view of an example of an electric stapler including the above-mentioned needle cartridge, and FIG. 5a is a longitudinal sectional view of an electric stapler including a conventional needle cartridge.
Figure b is a perspective view of a conventional needle cartridge. Code, A...Needle cartridge, S...Sheet staple, 1...Cartridge body, 2...Weight, 3...Outlet port, 4...Guide member, 5...
... Mounting piece, 6... Engaging claw, 7... Holding protrusion, 9...
...notch, 10...magazine, 14...reflective photo sensor, 19...opening.

Claims (1)

[Claims] 1. A main body having a storage section capable of accommodating sheet-like staples formed by connecting a large number of wire-like staples with an adhesive and stacked in multiple stages, and an upper part of the sheet-like staples in the main body. A U-shaped weight that is detachably provided, a sheet staple outlet provided at the lower front of the main body, and at least one sheet of sheet staples continuously protruding from the upper part of the outlet. What is claimed is: 1. A staple cartridge for an electric stapler, characterized in that it is provided with a guide member for guiding and is removably installed in a magazine.