JP2008221347A - Switch mechanism of motor-driven stapler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch mechanism of a motor-driven stapler comprising a contact lever, a movable piece, and a microswitch, enabling binding operation to be viewed from the outside and installed on the upper part of the motor-driven stapler. <P>SOLUTION: This switch mechanism of a motor-driven stapler for turning on/off the power supply installed in a case body comprises the contact lever having a contact end brought in contact with a paper to be inserted and the other end pushing up the movable piece and rotatably supported on the case body; the plate-like movable piece so fitted to the case body as to be vertically moved when the other end of the contact lever is pushed up; and the fixed microswitch turned on when the end of the movable piece is pushed up. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

    The present invention relates to an electric stapler capable of punching a sheet bundle such as a document with staples (stitching needles) and closing it by caulking, and more particularly, to an electric stapler switch mechanism capable of binding staples at appropriate positions. .

  Conventionally, a stapler is often used as a tool for filing a sheet bundle such as a document. There are many manual staplers, but if the sheet bundle is thick, force is required. Therefore, an electric stapler was devised instead of pressing the binding device manually. The electric stapler is used conveniently because it can be automatically bound by an electric driving force. The binding position of the stapler may not be constant depending on the thickness of the sheet bundle and the size of the sheet. In view of this, the microswitch is fixed as a device that allows the stapler's binding position to be freely set, but an electric stapler that can move the entire switch mechanism has been developed and applied (Japanese Patent Application Laid-Open No. 2003-334770). issue).

Since the disclosed electric stapler has a structure in which the entire switch is moved and the binding position is appropriately set and operated, it is difficult to visually check the operation of the electric stapler and the binding state of the staple. In addition, since there are many members that interlock and follow the structure for moving the entire switch, there is a problem that the structure becomes complicated and the manufacturing cost is high.
Therefore, development of an electric stapler that can reduce the number of members, make the switch mechanism difficult to break, and visually check the binding state has been awaited.
JP 2003-334770 A

  In order to solve the above problem, the switch mechanism of the electric stapler according to the present invention includes an abutment lever, a movable piece, and a micro switch at an upper portion of the electric stapler, and the electric stapler can visually recognize the binding operation from the outside. The object is to provide a switch mechanism.

  In order to achieve the above object, a switch mechanism of an electric stapler according to the present invention includes a case main body, a drive unit composed of a rotation drive device (motor) and a gear, a substrate unit equipped with an electric circuit, and staples (binding). In an electric stapler comprising a storage frame portion storing needles) and an arm portion that presses staples (binding needles) stored in the storage frame portion from above and penetrates both ends of staples to a document bundle etc. The switch mechanism of the electric stapler that turns on and off the power supply installed in the case body is composed of a contact end that contacts the paper to be inserted and the other end that rotates to push the movable piece and rotate to the case body. A contact lever supported on the shaft, a plate-shaped movable piece mounted on the case body so as to move up and down by pushing up the other end of the contact lever, And a fixed microswitch that is activated when the tip is pushed upward.

  The movable piece has a structure that is pivotally supported by the case body so that the tip thereof moves up and down by the rotation of the contact lever. Further, the switch mechanism of the electric stapler supports the contact lever on a plate-like body adjustment portion that can be moved back and forth in the longitudinal direction of the electric stapler so that the position at which the staple is bound to the paper can be appropriately set. In addition, the adjustment unit is also equipped with an adjustment button including a protrusion that can be operated from the outside.

  The switch mechanism of the electric stapler is provided with a protrusion at a lower portion of the adjustment portion so that the switch mechanism can be fixed at an appropriate position, and further, a position fixing portion provided with a rack that engages with the protrusion is provided. Structure. Further, the switch mechanism of the electric stapler is provided with a contact portion that forms a step with the adjustment portion as a substantially crank shape in order to limit a moving distance of the adjustment portion before and after, and a stopper that contacts the contact portion. It is also an installed structure. Further, a movable piece is extended to the other end of the contact lever, and a contact movable lever formed integrally with the contact lever and the movable piece is pivotally supported by the case body and inserted. It is also a structure composed of an abutting end where the paper abuts and an other end that moves up and down to press the movable part of the microswitch.

Since the switch mechanism of the electric stapler according to the present invention is configured as described in detail above, the following effects are obtained.
1. The switch mechanism is provided at the top, and the paper sheet pushes up the movable piece by pushing the contact lever and pushes the micro switch to activate it. Therefore, the binding position can be changed with a simple structure and stable. A fixed switch mechanism can be used.
2. Since the movable piece is pivotally supported, the switch mechanism of the present invention can be realized with a simple structure.
3. By providing an adjustment portion and having a structure in which the contact lever is pivotally supported, the contact lever can be moved by operating the adjustment portion.

4). By providing a protrusion at the lower portion of the adjusting portion and providing and engaging the position fixing portion on which the rack is formed, the position of the contact lever can be stably and fixed at an extremely fine point.
5. By providing a stopper that comes into contact with the adjusting portion, the movement of the adjusting portion can be restricted.
6). It is also possible to form an elongated hole shape that is larger in diameter than the engaging protrusion on the movable piece and is horizontally long and formed integrally with the contact lever and the movable piece.

Hereinafter, a switch mechanism of an electric stapler according to the present invention will be described in detail with reference to embodiments shown in the drawings. FIG. 1 is a side sectional view of the switch mechanism of the electric stapler of the present invention. FIGS. 2A to 2C are operation diagrams showing the operation of the switch mechanism of the electric stapler of the present invention. FIG. FIG. 4 is a side view of the electric stapler in which the switch mechanism is configured. FIG. 5 is a side view showing a switch mechanism of another embodiment.
The switch mechanism 10 of the electric stapler 1 according to the present invention includes a contact lever 20, a movable piece 30, and a micro switch 40. Further, the adjustment unit 50, the position fixing unit 60, the stopper 70, and the adjustment button 3 are also used.

  The contact lever 20 is substantially S-shaped in this embodiment as shown in the drawing. This is a structure that is pivotally supported by the case main body so as to be rotatable and when the contact end 22 as one end is pushed, the shaft rotates and the other end pushes up the movable piece. With this function, it is not necessary to be substantially S-shaped. In this embodiment, it is configured to be directly supported by the adjusting unit 50. Furthermore, the substantially S-shaped long abutting end 22 abuts and rotates when a paper sheet is inserted, and the substantially S-shaped short other end 24 pushes up the movable piece 30 with the rotation. is there. Since the contact lever 20 is fixed to the plate-like body of the adjustment unit 50, the position can be freely changed by the movement of the adjustment unit 50 left and right. Thereby, the contact position with the sheet bundle can be freely changed.

  The movable piece 30 is a substantially L-shaped plate-like body, and has a structure in which a left end 32 serving as a base is pivotally supported so as to be rotatable. Also in this example. The engagement portion 34 that contacts the other end 24 is set to be long so that the contact lever 20 can be moved back and forth. When the other end 24 of the contact lever 20 pushes up the bottom of the engaging portion 34, the movable piece 30 moves upward, and the surface pushes up the switch lever of the micro switch 40 to activate the switch.

The micro switch 40 is a start switch fixed to a substrate portion (not shown), and when pressed by the movable piece 30, the terminals are joined and turned on. In this embodiment, a main switch of the electric stapler is provided separately.
In this embodiment, an adjustment unit 50, a position fixing unit 60, a stopper 70, and an adjustment button 3 are further arranged.

  The adjustment unit 50 is formed of a plate-like body, and is provided with a projecting rod serving as an axial core for axially mounting the contact lever 20 at one end. The contact lever 20 is pivotally supported, and the contact lever 20 provided with a projection that fits the adjustment button 3 is moved back and forth in the approximate center so that the binding position of the sheet can be arbitrarily set. It is configured to be slidable back and forth so that it can be determined by position. By pivotally supporting the contact lever 20 on the adjusting portion 50, the adjusting portion 50 can be moved back and forth to move the contact lever 20. Further, in order to fix the position, as shown in FIG. 3, the adjusting portion 50 of this embodiment is provided with a crank-like contact portion 54 at the substantially center, and this contact portion comes into contact with a stopper 70 described later. It is also a structure. The contact portion can also be substituted by using a projection as the adjustment portion and a protrusion.

  The position fixing part 60 is a long plate provided with a rack 62 at the upper part so that the position of the adjusting part 50 can be fixed, and by engaging with a protrusion 52 provided at the lower part of the adjusting part 50, It becomes possible to fix the adjustment part 50 reliably.

  The stopper 70 is a member for restricting the position of the adjusting portion 50, and is provided at substantially the center of the electric stapler in this embodiment. In this embodiment, the crank-shaped contact portion 54 provided on the adjustment portion 50 and the stopper 70 contact each other.

The switch mechanism 10 of the electric stapler of the present invention will be described in detail with reference to the operation diagram shown in FIG. In this embodiment, the switch mechanism is a switch for starting a binding operation different from the main power switch of the electric stapler.
FIG. 2A is a diagram illustrating a standby state of the switch mechanism, and in this state, one end 22 of the contact lever 20 is waiting in a form of closing the insertion port 2 of the electric stapler 1. Further, by moving the adjustment unit 50 in this state, the binding position of the paper sheet can be arbitrarily determined. Further, the movable piece 30 has the engaging portion 34 set longer than the moving distance of the contact lever 20 so that the micro switch 40 can be surely pressed no matter where the contact lever is fixed.

FIG. 2B is a view of a state where paper is actually put, and FIG. 2C is a view from the back side of FIG. 2B. When the paper is inserted, the paper moves to one end of the contact lever 20. 22 is pressed. Since the contact lever 20 is pivotally supported, when the one end 22 is pressed, the other end 24 moves upward and presses the movable piece upward. Since the movable piece is lifted upward, the switch lever of the micro switch 40 is pressed, and the operation of the electric stapler is turned on.
When the paper sheet is taken out, the contact lever 20 returns to the standby state shown in FIG. 2A because the one end 22 is longer and the specific gravity is heavier.

As shown in FIG. 3, the adjustment unit 30 may be configured to be attached with the adjustment button 3 so that the position can be adjusted from the outside. In this embodiment, the adjustment button is a slide type, but can be a rotary type.
With the switch mechanism of the electric stapler of the present invention, it is possible not only to bind paper sheets at arbitrary positions but also to determine them visually.
In addition, by reducing the number of members linked to the microswitch, not only can the cost be reduced, but also the occurrence of a failure can be prevented.

In another embodiment, as shown in FIG. 5, the contact lever and the movable piece are integrated to form a contact movable lever 80 that presses the microswitch. In this structure, when the paper sheet is pressed against the contact piece 82, the sheet is rotated about the shaft 84 and the micro switch 40 is pressed on the upper surface of the movable portion 86.
Although not shown in the drawings, the adjustment portion, the position fixing portion, and the stopper are incorporated in the same arrangement as the structure shown in FIG.

  The shape of the abutting movable lever is not limited to the shape shown in the drawing, and may be any shape as long as the microswitch can be pressed by the engaging portion from the standby state. In addition, a structure in which the shaft can be pivotally supported once and a vertically long slot is formed at both ends and engaged with the protrusion to be movable up and down is also conceivable. Further, in the contact movable lever integrated with the movable piece alone or the engaging portion, a longitudinally long hole or a laterally elongated hole with which the protrusion is engaged is formed, and the movable piece alone or the contacted movable lever integrated with only the front and back is formed. It is also possible to realize a movable switch mechanism.

Cross-sectional side view of switch mechanism of electric stapler (A) The figure which shows the standby state of a switch mechanism, (b) The figure which shows the operation state of a switch mechanism, The figure which shows the back surface of (c) (b). Exploded perspective view showing the switch mechanism Side view of an electric stapler including a switch mechanism of the present invention The side view which shows the switch mechanism of another Example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric stapler 2 Insertion port 3 Adjustment button 10 Switch mechanism 20 Contact lever 22 Contact end 24 Other end 30 Movable piece 32 One end 34 Engagement part 40 Micro switch 50 Adjustment part 52 Projection 54 Contact part 60 Position fixing part 62 Rack 70 Stopper 80 Contacting movable lever 82 Contacting piece 84 Shaft 86 Moving part

Claims (6)

A case body, a drive unit composed of a rotation drive device (motor) and a gear, a substrate unit equipped with an electric circuit, a storage frame unit for storing staples (binding needles), and a storage frame unit In the electric stapler consisting of an arm part that presses the staple (binding needle) from the upper part and penetrates both ends of the staple to the document bundle etc.
The switch mechanism of the electric stapler that turns on and off the power supply installed in the case body,
An abutment lever that is pivotally supported by the case main body and comprises a contact end that abuts against the paper to be inserted and the other end that rotates to push up the movable piece;
A plate-like movable piece attached to the case body so as to move up and down by pushing up the other end of the contact lever;
A fixed microswitch that is activated by being pushed by pushing up the tip of the movable piece;
Switch mechanism for an electric stapler characterized by comprising   2. The switch mechanism of the electric stapler according to claim 1, wherein the movable piece is pivotally supported by the case body so that a tip thereof moves up and down by the rotation of the contact lever.   The switch mechanism of the electric stapler pivotally supports the contact lever on a plate-like adjusting portion that is movable back and forth in the longitudinal direction of the electric stapler so that the position at which the staple is bound to the paper can be appropriately set. 2. The switch mechanism for an electric stapler according to claim 1, wherein the adjustment portion is provided with an adjustment button comprising a protrusion operable from the outside.   The switch mechanism of the electric stapler is provided with a protrusion at a lower portion of the adjustment portion so that the switch mechanism can be fixed at an appropriate position, and further, a position fixing portion provided with a rack that engages with the protrusion is provided. The switch mechanism of the electric stapler according to any one of claims 1 to 3,   The switch mechanism of the electric stapler is provided with an abutting portion that forms a step with the adjusting portion as a substantially crank shape, and a stopper that abuts on the abutting portion is provided in order to limit the movement distance of the adjusting portion. The switch mechanism of the electric stapler according to any one of claims 1 to 4,   A movable piece is extended to the other end of the abutment lever, and the abutment movable lever, which is formed integrally with the abutment lever and the movable piece, is pivotally supported by the case main body and inserted into the paper to be inserted. 2. A switch mechanism for an electric stapler according to claim 1, comprising a contact end that contacts and a second end that moves up and down and presses the movable portion of the microswitch.

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