JP2018069436A - Desktop stapler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a desktop stapler for binding multiple sheets of paper using U shaped staples, allowing a large sheet of paper such as a newspaper to be easily bound with stapes arranged at a center thereof without being double-folded.SOLUTION: A desktop stapler comprises: a driving unit and a staple receiving unit. The staple receiving unit comprises: one or more guide needles penetrating stacked sheets from a rear face side; and a bending guide part for receiving both tips of a staple. The driving unit comprises an engagement part for positioning. The guide needle penetrates the sheets from the rear face to allow the engagement part for positioning to be engaged with guide needle so as to arrange the staple just above the bending guide part.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a desktop stapler having a simple configuration suitable for stacking a plurality of large-sized papers and binding them at a substantially central portion.

  A desktop stapler that binds a plurality of sheets using a U-shaped binding needle is known. As shown in, for example, Japanese Patent No. 5151725, a conventional desktop stapler has a needle accommodating means (accommodating portion 5) that accommodates a binding needle (binding needle S), and a plurality of stacked binding needles are struck onto a paper sheet. A needle driving means (upper main body portion 7) to be inserted and a needle receiving means (base 4) having a bending guide portion (clinch portion 9) are connected to each other in a freely rotatable manner. By positioning the receiving means on the back side of the paper, driving the binding needle from the front side of the paper with the needle driving means, receiving both ends of the binding needle with the bending guide, and bending both ends inwardly, a plurality of sheets of paper Is bound.

  Patent 5151725   Patent 5126797   Patent 4812761   Patent 4731503   Patent 4484889

  A conventional desktop stapler is configured to perform a binding operation by sandwiching a plurality of sheets between a needle receiving means and a needle receiving means that are rotatably connected. So, for example, when you want to bind multiple sheets of large-sized paper like newspapers at the center, it will not reach the binding position from the edge of the paper. Will be bound. As a result, if the binding position is shallow (too close to the crease), the middle paper cannot be bound, and if the binding position is deep (too far from the crease), some of the characters written on the paper will be hidden. There was a problem that.

  The present invention has been made to solve such problems, and even when a plurality of large-sized paper sheets are to be bound at the center, it can be easily bound without folding the paper in half. An object of the present invention is to provide a desktop stapler that can be configured easily.

  The desktop stapler according to the present invention includes a driving unit and a needle receiving unit.

  The driving unit includes a needle storage unit that stores a plurality of binding needles, a needle biasing unit that biases the plurality of binding needles stored in the needle storage unit from one end side to the other end side of the needle storage unit, A needle driving means for pushing the binding needle on the other end side in the needle housing means from above to penetrate a plurality of stacked sheets, a pulling biasing means for returning the driving means upward, and a positioning mechanism A joint part.

  In addition, the needle receiving unit includes a guide needle that penetrates a plurality of stacked sheets from the back side and engages the positioning engagement portion on the front side of the paper, and the positioning engagement portion on the guide needle. And a bending guide section for receiving both ends of the binding needle pushed by the needle driving means in the engaged state on the back side of the paper and guiding both ends of the binding needle in a direction approaching each other.

  Therefore, when the overlapped paper is turned over so that the guide needle penetrates and the positioning engagement portion of the driving unit is engaged with the guide needle on the surface side of the paper, the binding needle pressed by the needle driving means Both ends can be received by the bending guide portion.

  It is preferable that two guide needles are provided in the needle receiving unit, and positioning engaging portions that can be engaged with the respective guide needles are provided at two positions of the driving unit.

  According to the desktop type stapler of the present invention, an expected effect can be obtained with an extremely simple configuration including a driving unit and a needle receiving unit. That is, by engaging the positioning engagement portion on the driving unit side with the guide needle on the needle receiving unit side, the binding needle is positioned directly above the bending guide portion, so that it is as large as a newspaper. Even when it is desired to bind a plurality of stacked sheets of size at the center, it can be easily bound at any position without folding the paper in half.

  In addition, when the guide needle provided on the needle receiving unit has two guide needles and positioning engaging portions that can be engaged with the respective guide needles are provided at two positions of the driving unit, the driving unit is not connected to the bending guide portion. Therefore, the binding needle in the needle accommodating means can be more accurately positioned with respect to the bending guide portion.

It is a longitudinal cross-sectional view of the driving unit in one Embodiment of this invention. It is a longitudinal cross-sectional view of a needle receiver unit. It is a top view of a needle | hook accommodation means front-end | tip part. It is a front view which shows the state which received both the front-end | tips of the binding needle with the bending guide part in a partial cross section. It is a front view which shows the state which bent the binding needle | hook at the bending induction | guidance | derivation part, and bound several sheets of paper in a partial cross section. It is sectional drawing which shows the use condition of a needle receiver unit. It is a partial top view of the needle | hook accommodation means in other embodiment. It is sectional drawing of the needle receiver unit in other embodiment.

  1 to 6 show an embodiment of a desktop stapler according to the present invention, and this desktop stapler includes a driving unit 1 shown in FIG. 1 and a needle receiving unit 2 shown in FIG.

  The driving unit 1 includes a needle storage unit 4 that stores a plurality of binding needles 3, a needle biasing unit 5 that biases the stored binding needles 3 from one end side to the other end side of the needle storage unit 4, One end side of the needle housing means 4 is rotatably connected to one end side of the needle housing means 4 via a connecting shaft 6, and the other end side of the driving means 7 is connected to the other end side of the needle housing means 4. And a release biasing means 8 made of a leaf spring for biasing in the direction of separation (upward).

  For example, a V-shaped positioning engaging portion 9 as shown in FIG. 3 is formed at the tip of the needle housing means 4 on the other end side.

  The needle urging means 5 includes a slide piece 10 slidably provided in the needle accommodating means 4 and a tension spring 11 that urges the slide piece 10 from one end side to the other end side of the needle accommodating means 4. The plurality of binding needles 3 housed in the needle housing means 4 are pressed from one end side of the needle housing means 4 toward the other end side by the slide piece 10.

  The driving means 7 has a needle driving portion 12 on the other end side. The needle driving portion 12 is formed by bending downward one end portion of a leaf spring constituting the pulling-off biasing means 8, and a binding needle located at the other end side in the needle housing means 4 at the lower end thereof. 3 is pushed from above, and the binding needles 3 are driven into and penetrate through a plurality of sheets 13 (see FIG. 4).

  Further, as shown in FIG. 2, the needle receiver unit 2 rotatably connects one end side of the needle receiver 14 and the positioning means 15 via a connecting shaft 16, and the needle receiver 14 and the positioning means 15. 15 is provided with a return biasing means 17 made of a developing spring that biases the other end sides of the needles 15 in the direction of separating, and the needle receiving means 14 is moved against the positioning means 15 against the return biasing means 17. A temporary holding means 18 is provided for temporarily holding at an approaching position.

  The temporary holding means 18 is provided with convex portions on both sides of the positioning means 15 and engages the convex portions with both side edges of the needle receiving means 14, thereby resisting the return biasing means 17. 14, 15 is temporarily held in the approach position (see FIG. 6).

  A bending guiding portion 19 is provided on the other end side of the needle receiving means 14. As shown in FIGS. 4 and 5, the bending guide portion 19 receives both ends of the binding needle 3 penetrating a plurality of sheets of paper 13 on the back side of the sheet 13, and these both ends are inward (directions approaching each other). ).

  A guide needle 20 is provided on the other end side of the positioning means 15. The guide needle 20 penetrates the stacked paper 13 from the back side at a position near the bending guide portion 19 to position the driving unit 1 with respect to the bending guide portion 19.

  Using the desktop stapler configured as described above, for example, a large-size paper 13 such as newspaper can be stacked and bound at a substantially central portion as follows.

  First, a plurality of sheets of paper 13 are placed upside down on the edge of the work table 22 or the like, and the needle receiving unit 2 is placed thereon with the needle receiving means 14 facing down.

  Then, the other end side of the positioning means 15 is pushed against the return biasing means 17 so that the guide needle 20 penetrates the stacked paper 13 as shown in FIG.

  At this time, the needle receiving means 14 and the positioning means 15 are held by the temporary holding mechanism 18 in a state in which the other end sides are brought close to each other.

  In this state, the stacked paper 13 is reversed, and the positioning engagement portion 9 provided at the tip of the needle accommodating means 4 is engaged with the guide needle 20 from the side as shown in FIG. As a result, the driving unit 1 is positioned with respect to the bending guiding portion 19, and the binding needle 3 positioned on the other end side of the needle accommodating means 4 is positioned directly above the bending guiding portion 21.

  Therefore, when the driving means 7 is rotated downward against the pulling biasing means 8 and the binding needle 3 on the other end side is pushed by the needle driving portion 12, the binding needle 3 is overlapped as shown in FIG. Further, as shown in FIG. 5, both ends of the binding needle 3 are bent in a direction approaching each other along the bending guide portion 21, so that the stacked paper 13 can be bound.

  Next, FIG. 7 shows another embodiment of the present invention. The difference from the above embodiment is that a pair of left and right guide needles 20a and 20b is provided at the distal end of the positioning means 15, and the needle accommodating means 4 The point is that a pair of left and right positioning engaging portions 21a and 21b corresponding to the guide needles 20a and 20b are provided at the tip. Both guide needles 20a and 20b are located on the left and right of the bending guide portion 19 when the positioning means 15 is brought close to the needle receiving means 14.

  When engaged with the guide needles 20a and 20b, the pair of left and right positioning engaging portions 21a and 21b positions the guide needles 20a and 20b on the left and right sides of the binding needle 3 positioned on the other end side.

  According to this embodiment, since the guide needles 20a and 20b are located at the left and right positions of the bending guide portion 19, for example, when a newspaper that is stacked in multiple and folded in half is to be bound on the fold, 2 By passing the guide needles 20a and 20b through the folds, the left and right positioning engaging portions 21a and 21b are engaged with each other so that the binding needle 3 on the other end side is accurately positioned at the crease. Can be bound.

  FIG. 8 shows still another embodiment of the present invention. This embodiment is a modification of the needle receiver unit 2, and two guide needles 20 a and 20 b and a bending guide portion 19 are integrally provided in a single needle receiver block 22. The bending guiding portion 19 is positioned at the center of the two guide needles 20a and 20b.

  Further, the needle accommodating means 4 is provided with a pair of left and right positioning engaging portions 21a and 21b corresponding to the guide needles 20a and 20b, as in the embodiment of FIG.

  According to this embodiment, when the stacked paper 13 is to be bound on the crease, first, the two guide needles 20a and 20b are passed through the crease with the needle receiving block.

  Next, when the pair of left and right positioning engagement portions 21a and 21b are engaged with the guide needles 20a and 20b on the front side of the paper 3, both ends of the binding needle 3 penetrate the fold position, and the bending guide portion A plurality of sheets of paper 3 can be bound at the position of the fold.

  Furthermore, although not shown, as another embodiment, the needle accommodating means 4 and the needle driving means 7 of the driving unit 1 may be connected so as to freely advance and retract in the driving direction (vertical direction) of the binding needle 3.

  When the needle driving means 7 is connected to the needle housing means 4 so as to be movable up and down, the positioning engaging portions 21a and 21b can be provided on the needle housing means 4 side.

DESCRIPTION OF SYMBOLS 1 Driving unit 2 Needle receiving unit 3 Binding needle 4 Needle accommodation means 5 Needle pushing urging means 7 Needle driving means 8 Pulling urging means 9 Positioning engagement part 12 Needle driving part 14 Needle receiving means 15 Positioning means 17 Return biasing means 18 Temporary holding means 19 Bending guide parts 20, 20a, 20b Guide needles 21a, 21b Positioning engaging parts

Claims (2)

In a desktop stapler that binds multiple sheets using a U-shaped binding needle (3),
It consists of a driving unit (1) and a needle holder unit (2).
The driving unit urges the needle accommodating means (4) for accommodating a plurality of binding needles (3) and the plurality of binding needles accommodated in the needle accommodating means from one end side to the other end side of the needle accommodating means. A needle biasing means (5) for performing the above operation, a needle driving means (7) for pushing the binding needle on the other end side of the needle housing means from above and penetrating a plurality of stacked sheets, and the needle driving means in the upward direction. A pulling-off biasing means (8) for returning and a positioning engaging portion (9);
The needle receiver unit includes a guide needle (20) penetrating from the back surface side to a plurality of stacked paper sheets and engaging the positioning engagement portion on the front surface side of the paper, and the positioning engagement portion on the guide needle. A bending guiding portion (19) for receiving both ends of the binding needle pushed by the needle driving means on the back side of the paper and guiding both ends of the binding needle in a direction approaching each other. Desktop stapler characterized by having.   2. The desktop according to claim 1, wherein two guide needles are provided in the needle receiving unit, and positioning engaging portions that can be engaged with the respective guide needles are provided at two positions of the driving unit. Type stapler.

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