JP2007144619A - Stapler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stapler having a simple handling characteristic and hardly slipped out of a hand. <P>SOLUTION: The stapler is equipped with a finger fastening part on the pressing surface of a handle and is arranged to set an optimum energizing force in such a way as to suit the finger fastening part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a stapler for binding thin objects such as paper.

  As a stapler for binding thin objects such as paper, the operation force is increased by using a so-called booster mechanism that allows an increase in the operation stroke amount and suppresses the peak value of the operation force as in Patent Document 1 to Patent Document 3. The idea to mitigate is known.

JP 2005-138248 A JP 2005-022037 A JP 2002-028877 A

Further, in the stapler, in the standby state, the pressing force for pushing the staples and the urging force for maintaining the distance between the staples, and the gap between the pushing port from which the staples are pushed out and the needle receiving part for receiving both ends of the pushed staples are set. An energizing force to keep it has been needed. These urging forces are mostly due to two return springs, and it is considered that the urging forces are set in anticipation of variations in manufacturing of the stapler sliding portion and an increase in sliding resistance due to aging.
In recent years, based on the idea of universal design, the biasing force of a biasing member that biases a pair of handles on which a finger is put away tends to be weakened in order to reduce the operating force in the stapler.

  Due to recent improvements in manufacturing accuracy, design innovations, etc., the urging force for maintaining the distance between the pushing blade that pushes the staple and the staple, the extrusion port from which the staple is pushed out, and the needle receiving portion that receives both ends of the pushed staple It is now possible to weaken the biasing force to maintain the interval between the two, but when the latter biasing, which has a long stroke, is weakened, it is difficult to grasp the pair of handles lightly and wait in the waiting state before pushing out the staples. Often the stapler is about to slip.

  For example, when a booster mechanism is used in the stapler to suppress the peak value of the operation force when pushing the staple in exchange for an increase in the operation stroke amount, the urging force is reduced to a force for returning the pair of handles. In many cases, this may cause the stapler to slip out of the hand. If the biasing force is simply increased, the required operation energy increases in combination with the increased operation stroke amount. The burden of.

  Embodiments of the present invention will be described below with reference to the drawings and the like, but this is intended to make the contents of the present invention easier to understand, and does not reduce the scope of the appended claims.

The stapler according to the invention 1 is, for example, as shown in FIG.
One end is supported so as to be swingable about the axis 1, a handle 4 having a pressing surface 7 on the outer side of the other end and a pressing blade 8 on the inner side,
One end of the handle 5 is supported so as to be swingable about an axis 2 that is substantially parallel to and close to the axis 1, and includes a pressing surface 9 on the outer side of the other end and a needle receiving portion 10 on the inner side,
One end is supported so as to be able to swing around an axis 3 that is substantially parallel to and close to the axis 1, the other end is provided with an extrusion port 11, and can store staples (12, 20) between the handles 4 and 5. A storage unit 6 disposed in
A finger locking part (15, 18) provided on at least one of the pressing surfaces 7 and 9 and having an insertion port (13, 14, 16, 17) into which a finger can be inserted;
Comprising
The stored staple 12 is pushed onto the pressing blade 8 by pressing the pressing surfaces 7 and 9, and the staple receiving portion 10 receives both ends of the pushed staple 12 and guides the both ends to be bent. It is.

The stapler according to the second aspect of the present invention is the stapler according to the first aspect of the present invention, for example, as shown in FIG.
Finger locking portions 15 and 18 are provided on the pressing surfaces 7 and 9, respectively.
It is a stapler.

The stapler according to the invention 3 is, for example, as shown in FIGS. 2 and 3 or FIGS. 4 and 5,
One end is supported so as to be swingable about the axis 1, a handle 4 including a pressing surface 7 on the outside of the other end, and a pressing transmission portion 33 in the middle,
A handle 5 having one end supported so as to be swingable about an axis 2 substantially parallel to the axis 1 and having a pressing surface 9 on the outside of the other end and a needle receiving portion 10 on the inside;
One end is supported to be swingable about an axis 3 that is substantially parallel to and close to the axis 2, the other end is provided with an extrusion port 11, and the staples (12, 20) can be stored between the handles 4 and 5. A storage unit 6 disposed in
One end portion is supported so as to be able to swing around an axis 26 that is substantially parallel to and close to the axis 3, the pressing blade 8 is provided at the other end, and a pressed transmission portion 34 that receives a force from the pressing transmission portion 33 at the intermediate portion, A pressing blade portion 25 disposed between the handle 4 and the storage portion 6;
A finger locking portion 15 provided on at least one of the pressing surfaces 7 and 9 and having an insertion port (13, 14) into which a finger can be inserted;
Comprising
The stored staple 12 is pushed onto the pressing blade 8 by pressing the pressing surfaces 7 and 9, and the staple receiving portion 10 receives both ends of the pushed staple 12 and guides the both ends to bend. It is.

The stapler according to the invention 4 is the stapler of the invention 3, as shown in FIGS. 2 and 3, or FIGS.
3 or FIG. 3 in which the space between the extrusion port 11 and the needle receiver 10 is closed from the standby state as shown in FIG. 2 or 4 in which the space between the extrusion port 11 and the needle receiver 10 is opened. 5 from the point 31 to the point 35 on the rotary track 30 of the plane 29 including the pressing surface 7, rather than the moving distance from the point 32 to the point 36 on the rotary track 30 at the tip of the pressing blade 8 until the clamping state as shown in FIG. It is a stapler with a longer moving distance.

The stapler according to the invention 5 is the stapler according to any one of the inventions 1 to 4, for example, as shown in FIG. 1 or FIGS. 2 and 3 or FIGS.
The axes 1 and 2 are concentric, and the handle 4 is a stapler supported by the handle 5 so as to be swingable about the axis 1.

Further, the stapler according to the preferred plan 1 is the stapler according to any one of the inventions 1 to 5, for example, as shown in FIG. 1 or FIGS.
At least one of the finger locking portions 15 and 18 is rotatable about an axis (21, 41) substantially perpendicular to the pressing surface (7, 9) on which the selected finger locking portion (15, 18) is provided. It is a stapler supported by.

  As described above, in the present invention, since at least one of the finger locking portions 15 and 18 capable of locking the finger by inserting the finger is provided, for example, the finger is hung to reduce the operation force of the stapler. It is possible to obtain a stapler that has simple operability and is difficult to slide off from a hand even if a method of extremely weakening or not using a biasing member that biases the pair of handles (4, 5) away from each other is used. it can.

In addition, in the invention 2, in addition to the effects of the present invention, it is possible to obtain a simple stapler that is more difficult to slip from the hand.

In addition, in the invention 4, in addition to the effects of the present invention, it is possible to simultaneously obtain a reduction in operating energy and high-quality operability.

  In addition, in Plan 1, in addition to the effects of the present invention, it is ideal even if there are individual differences in hand shape, differences in how to grip the stapler, differences depending on which fingers are inserted, and differences in dominant arms. It is easy to obtain the finger locking portions (15, 18) having the insertion direction.

[First Embodiment]
In FIG. 1, handles 4 and 5 are each integrally molded by injection molding of glass fiber reinforced nylon.
Further, a C-shaped finger locking portion 15 with a split 22 having an insertion port 13 and an insertion port 14 opened in the longitudinal direction of the handle 4 is provided on the pressing surface 7 outside the other end of the handle 4. Yes. This finger locking portion 15 assumes that a thumb is inserted. However, when a finger other than the thumb is assumed, the insertion slot 13 extends in a direction substantially parallel to the axis 1 that is the center of swinging of the handle 4. It is preferable to open the insertion port 14. However, since the disk-like portion 23 is fitted into the gap between the other end portion of the handle 4 and is screwed so that the disc-like portion 23 can be rotated from the inside of the handle 4, It can be rotated about an axis 21 that is substantially perpendicular to the surface 7, and it is easy to change the insertion direction of the finger.
Further, a finger locking portion 18 similar to the finger locking portion 15 is provided on the pressing surface 9 outside the other end portion of the handle 5 so as to be rotatable around the axis 41, but is ring-shaped and split. Is not included.
In addition, the finger locking portions (15, 18) may be molded with a resin such as polypropylene having a high elasticity, rubber having a high elasticity, or the like so as to fit the finger more.
In addition, the finger locking portion (15, 18) is used in a suitable shape, such as a ring shape, a C-shape, a cap shape with the insertion port (13, 16) or the insertion port (14, 17) blocked. It is preferable.

Also, the axes 1 and 2 provided at one end portions of the handles 4 and 5 are concentric.
Further, one end of the storage portion 6 is supported so as to be swingable about the axis 3, and the axis 3 is also concentric with the axes 1 and 2, and in fact, an axis pin centering on the axes 1, 2, and 3 24 is inserted as the center axis of these swings.
However, it will be apparent to those skilled in the art that the axes that are concentric here are often not concentric when using various known staplers, particularly mechanisms such as a booster mechanism and a parallel link.

Further, the staple assembly including the leading staple 12 and the trailing staple 20 and the slide piece 19 of the storage unit 6 are stored in the groove of the storage unit 6, and the staple 20 is biased by the slide piece 19. As a result, the staple 12 is urged toward the other end of the storage unit 6.
The pressing blade 8 capable of extruding the staple 12 from the extrusion port 11 provided at the other end of the storage unit 6 is a metal plate partially embedded inside the other end of the handle 4.
Further, the needle receiver 10 provided with a groove for guiding the both ends of the staple 12 to be bent is a metal member partially embedded inside the other end of the handle 5.
Further, in a standby state before pushing out the staple 12, a return spring for keeping the press blade 8 and the staple 12 at an appropriate interval and a return spring for keeping the push port 11 and the needle receiving portion 10 at an appropriate interval are provided. It may be provided.

[Second Embodiment]
2 and 3, the handles 4 and 5, the storage portion 6, and the pressing blade portion 25 are each formed by press-molding an iron plate.
Further, on the pressing surface 7 outside the other end portion of the handle 4, a rubber-molded ring-shaped finger locking portion 15 having insertion holes 13 and 14 opened in the longitudinal direction of the handle 4 is provided.

Also, the axes 1 and 2 provided at one end portions of the handles 4 and 5 are concentric, and the cylindrical projection 27 centering on the axis 1 movable in the groove 28 of the handle 5 pushes the staple 12 from the standby state. The operation up to this point remains in the vicinity of one end of the groove 28, and moves to the vicinity of the other end of the groove 28 when the staples (12, 20) are replenished.
Further, one end of the storage portion 6 is supported so as to be swingable about the axis 3, the axis 3 is concentric with the axis 26, and actually the shaft pins centering on the axes 3 and 26 are these swings. It is inserted as a moving center axis and supported near the axis 2 on the handle 5.

Further, the pressing blade 8 capable of extruding the staple 12 from the extrusion port 11 provided at the other end of the storage unit 6 is integrally formed with the other end of the pressing blade 25.
Further, the needle receiver 10 provided with a groove for guiding the both ends of the staple 12 to be bent is integrally formed inside the other end of the handle 5.
Further, in a standby state before pushing out the staple 12, a return spring for keeping the press blade 8 and the staple 12 at an appropriate interval and a return spring for keeping the push port 11 and the needle receiving portion 10 at an appropriate interval are provided. It may be provided.

  Further, a convex shape is integrally formed in the pressure transmission portion 33 of the handle 4 for transmitting the pressure from the pressure portion 7 to the pressure transmission portion 34 of the pressing blade portion 25, and a straight line 37 is formed on the pressure transmission portion 34. It can slide in line contact.

[Third Embodiment]
In the third embodiment, the transmission mechanism in the pressure transmission part 33 and the pressure transmitted part 34 of the second embodiment is as shown in FIGS. 4 and 5, and the major changes are obvious to those skilled in the art. Since it is clear, description is omitted.

  A shaft pin centering on the axis 39 is inserted into the pressure transmission portion 33 of the handle 4 for transmitting the pressure from the pressure portion 7 to the pressure transmission portion 34 of the pressing blade portion 25. The shaft pin centering on the axis 40 is inserted. Further, the pressure transmitting portion 33 transmits pressure via a link 38 supported so that one end can swing on an axis pin centered on the axis 39 and the other end swingably supported on an axis pin centered on the axis 40. The pressure is transmitted to the part 34.

A diagram representing the first embodiment in the standby state by a trigonometric method Projection view (schematic diagram) of the second embodiment in the standby state viewed from the direction of the axis 26 Projection view (schematic diagram) of the clamped second embodiment viewed from the direction of the axis 26 Projection view (schematic diagram) of the third embodiment in the standby state viewed from the direction of the axis 26 Projection view (schematic diagram) of the clamped third embodiment viewed from the direction of the axis 26

Explanation of symbols

1,2,3,21,26,
39,40,41. Axis 4,5. Handle 6. Storage part 7,9. Pressing surface 8. Press blade 10. Needle receiving part 11. Extrusion port 12,20. Staple 13,14,16,17. 15, 18. Finger locking part 19. Slide piece 22. Split 23, 42. Disk shaped part 24. Shaft pin 25. Pressing blade part 27. Cylindrical projection 28. Groove 29. , 36. Point 33. Press transmission part 34. Press received part 37. Straight line 38. Link

  The present invention relates to a stapler for binding thin objects such as paper.

  As a stapler for binding thin objects such as paper, the operation force is increased by using a so-called booster mechanism that allows an increase in the operation stroke amount and suppresses the peak value of the operation force as in Patent Document 1 to Patent Document 3. The idea to mitigate is known.

JP 2005-138248 A JP 2005-022037 A JP 2002-028877 A

Further, in the stapler, in the standby state, the pressing force for pushing the staples and the urging force for maintaining the distance between the staples, and the gap between the pushing port from which the staples are pushed out and the needle receiving part for receiving both ends of the pushed staples are set. An energizing force to keep it has been needed. These urging forces are mostly due to two return springs, and it is considered that the urging forces are set in anticipation of variations in manufacturing of the stapler sliding portion and an increase in sliding resistance due to aging.
In recent years, based on the idea of universal design, the biasing force of a biasing member that biases a pair of handles on which a finger is put away tends to be weakened in order to reduce the operating force in the stapler.

  Due to recent improvements in manufacturing accuracy, design innovations, etc., the urging force for maintaining the distance between the pushing blade that pushes the staple and the staple, the extrusion port from which the staple is pushed out, and the needle receiving portion that receives both ends of the pushed staple It is now possible to weaken the biasing force to maintain the interval between the two, but when the latter biasing, which has a long stroke, is weakened, it is difficult to grasp the pair of handles lightly and wait in the waiting state before pushing out the staples. Often the stapler is about to slip.

  For example, when a booster mechanism is used in the stapler to suppress the peak value of the operation force when pushing the staple in exchange for an increase in the operation stroke amount, the urging force is reduced to a force for returning the pair of handles. In many cases, this may cause the stapler to slip out of the hand. If the biasing force is simply increased, the required operation energy increases in combination with the increased operation stroke amount. The burden of.

  Embodiments of the present invention will be described below with reference to the drawings and the like, but this is intended to make the contents of the present invention easier to understand, and does not reduce the scope of the appended claims.

The stapler according to the invention 1 is, for example, as shown in FIG.
One end is supported so as to be swingable about the axis 1, a handle 4 having a pressing surface 7 on the outer side of the other end and a pressing blade 8 on the inner side,
One end of the handle 5 is supported so as to be swingable about an axis 2 that is substantially parallel to and close to the axis 1, and includes a pressing surface 9 on the outer side of the other end and a needle receiving portion 10 on the inner side,
One end is supported so as to be able to swing around an axis 3 that is substantially parallel to and close to the axis 1, the other end is provided with an extrusion port 11, and can store staples (12, 20) between the handles 4 and 5. A storage unit 6 disposed in
A finger locking portion 15 provided on one of the pressing surfaces 7 and 9 and having an insertion opening (13, 14) which is opened in the longitudinal direction of the handle 4 or 5 including the one and can insert a finger;
Comprising
The stored staple 12 is pushed onto the pressing blade 8 by pressing the pressing surfaces 7 and 9, and the staple receiving portion 10 receives both ends of the pushed staple 12 and guides the both ends to be bent. It is.

The stapler according to the second aspect of the present invention is the stapler according to the first aspect of the present invention, for example, as shown in FIG.
On the other of the pressing surfaces 7 and 9, a finger locking part 18 having an insertion port (16, 17) into which a finger can be inserted is provided.
It is a stapler.

The stapler according to the invention 3 is, for example, as shown in FIGS. 2 and 3 or FIGS. 4 and 5,
One end is supported so as to be swingable about the axis 1, a handle 4 including a pressing surface 7 on the outside of the other end, and a pressing transmission portion 33 in the middle,
A handle 5 having one end supported so as to be swingable about an axis 2 substantially parallel to the axis 1 and having a pressing surface 9 on the outside of the other end and a needle receiving portion 10 on the inside;
One end is supported to be swingable about an axis 3 that is substantially parallel to and close to the axis 2, the other end is provided with an extrusion port 11, and the staples (12, 20) can be stored between the handles 4 and 5. A storage unit 6 disposed in
One end portion is supported so as to be able to swing around an axis 26 that is substantially parallel to and close to the axis 3, the pressing blade 8 is provided at the other end, and a pressed transmission portion 34 that receives a force from the pressing transmission portion 33 at the intermediate portion, A pressing blade portion 25 disposed between the handle 4 and the storage portion 6;
A finger locking portion 15 provided on one of the pressing surfaces 7 and 9 and having an insertion opening (13, 14) which is opened in the longitudinal direction of the handle 4 or 5 including the one and can insert a finger;
Comprising
The stored staple 12 is pushed onto the pressing blade 8 by pressing the pressing surfaces 7 and 9, and the staple receiving portion 10 receives both ends of the pushed staple 12 and guides the both ends to bend. It is.

The stapler according to the invention 4 is the stapler of the invention 3, as shown in FIGS. 2 and 3, or FIGS.
3 or FIG. 3 in which the space between the extrusion port 11 and the needle receiver 10 is closed from the standby state as shown in FIG. 2 or 4 in which the space between the extrusion port 11 and the needle receiver 10 is opened. 5 from the point 31 to the point 35 on the rotary track 30 of the plane 29 including the pressing surface 7, rather than the moving distance from the point 32 to the point 36 on the rotary track 30 at the tip of the pressing blade 8 until the clamping state as shown in FIG. It is a stapler with a longer moving distance.

The stapler according to the invention 5 is the stapler according to any one of the inventions 1 to 4, for example, as shown in FIG. 1 or FIGS. 2 and 3 or FIGS.
The axes 1 and 2 are concentric, and the handle 4 is a stapler supported by the handle 5 so as to be swingable about the axis 1.

Further, the stapler according to the preferred plan 1 is the stapler according to any one of the inventions 1 to 5, for example, as shown in FIG. 1 or FIGS.
At least one of the finger locking portions 15 and 18 is rotatable about an axis (21, 41) substantially perpendicular to the pressing surface (7, 9) on which the selected finger locking portion (15, 18) is provided. It is a stapler supported by.

As described above, in the present invention, since the finger locking portion 15 that can lock the finger by inserting the finger is provided, in order to reduce the operation force of the stapler, for example, a pair of handles (4 , 5) Even if a method of extremely weakening or not using a biasing member that biases in the direction away from the stapler, a stapler that has simple operability and is difficult to slip from the hand can be obtained.

In addition, in the invention 2, in addition to the effects of the present invention, it is possible to obtain a simple stapler that is more difficult to slip from the hand.

In addition, in the invention 4, in addition to the effects of the present invention, it is possible to simultaneously obtain a reduction in operating energy and high-quality operability.

  In addition, in Plan 1, in addition to the effects of the present invention, it is ideal even if there are individual differences in hand shape, differences in how to grip the stapler, differences depending on which fingers are inserted, and differences in dominant arms. It is easy to obtain the finger locking portions (15, 18) having the insertion direction.

[First Embodiment]
In FIG. 1, handles 4 and 5 are each integrally molded by injection molding of glass fiber reinforced nylon.
Further, a C-shaped finger locking portion 15 with a split 22 having an insertion port 13 and an insertion port 14 opened in the longitudinal direction of the handle 4 is provided on the pressing surface 7 outside the other end of the handle 4. Yes. This finger locking portion 15 assumes that a thumb is inserted. However, when a finger other than the thumb is assumed, the insertion slot 13 extends in a direction substantially parallel to the axis 1 that is the center of swinging of the handle 4. It is preferable to open the insertion port 14. However, since the disk-like portion 23 is fitted into the gap between the other end portion of the handle 4 and is screwed so that the disc-like portion 23 can be rotated from the inside of the handle 4, It can be rotated about an axis 21 that is substantially perpendicular to the surface 7, and it is easy to change the insertion direction of the finger.
Further, a finger locking portion 18 similar to the finger locking portion 15 is provided on the pressing surface 9 outside the other end portion of the handle 5 so as to be rotatable around the axis 41, but is ring-shaped and split. Is not included.
In addition, the finger locking portions (15, 18) may be molded with a resin such as polypropylene having a high elasticity, rubber having a high elasticity, or the like so as to fit the finger more.
In addition, the finger locking portion (15, 18) is used in a suitable shape, such as a ring shape, a C-shape, a cap shape with the insertion port (13, 16) or the insertion port (14, 17) blocked. It is preferable.

Also, the axes 1 and 2 provided at one end portions of the handles 4 and 5 are concentric.
Further, one end of the storage portion 6 is supported so as to be swingable about the axis 3, and the axis 3 is also concentric with the axes 1 and 2, and in fact, an axis pin centering on the axes 1, 2, and 3 24 is inserted as the center axis of these swings.
However, it will be apparent to those skilled in the art that the axes that are concentric here are often not concentric when using various known staplers, particularly mechanisms such as a booster mechanism and a parallel link.

Further, the staple assembly including the leading staple 12 and the trailing staple 20 and the slide piece 19 of the storage unit 6 are stored in the groove of the storage unit 6, and the staple 20 is biased by the slide piece 19. As a result, the staple 12 is urged toward the other end of the storage unit 6.
The pressing blade 8 capable of extruding the staple 12 from the extrusion port 11 provided at the other end of the storage unit 6 is a metal plate partially embedded inside the other end of the handle 4.
Further, the needle receiver 10 provided with a groove for guiding the both ends of the staple 12 to be bent is a metal member partially embedded inside the other end of the handle 5.
Further, in a standby state before pushing out the staple 12, a return spring for keeping the press blade 8 and the staple 12 at an appropriate interval and a return spring for keeping the push port 11 and the needle receiving portion 10 at an appropriate interval are provided. It may be provided.

[Second Embodiment]
2 and 3, the handles 4 and 5, the storage portion 6, and the pressing blade portion 25 are each formed by press-molding an iron plate.
Further, on the pressing surface 7 outside the other end portion of the handle 4, a rubber-molded ring-shaped finger locking portion 15 having insertion holes 13 and 14 opened in the longitudinal direction of the handle 4 is provided.

Also, the axes 1 and 2 provided at one end portions of the handles 4 and 5 are concentric, and the cylindrical projection 27 centering on the axis 1 movable in the groove 28 of the handle 5 pushes the staple 12 from the standby state. The operation up to this point remains in the vicinity of one end of the groove 28, and moves to the vicinity of the other end of the groove 28 when the staples (12, 20) are replenished.
Further, one end of the storage portion 6 is supported so as to be swingable about the axis 3, the axis 3 is concentric with the axis 26, and actually the shaft pins centering on the axes 3 and 26 are these swings. It is inserted as a moving center axis and supported near the axis 2 on the handle 5.

Further, the pressing blade 8 capable of extruding the staple 12 from the extrusion port 11 provided at the other end of the storage unit 6 is integrally formed with the other end of the pressing blade 25.
Further, the needle receiver 10 provided with a groove for guiding the both ends of the staple 12 to be bent is integrally formed inside the other end of the handle 5.
Further, in a standby state before pushing out the staple 12, a return spring for keeping the press blade 8 and the staple 12 at an appropriate interval and a return spring for keeping the push port 11 and the needle receiving portion 10 at an appropriate interval are provided. It may be provided.

  Further, a convex shape is integrally formed in the pressure transmission portion 33 of the handle 4 for transmitting the pressure from the pressure portion 7 to the pressure transmission portion 34 of the pressing blade portion 25, and a straight line 37 is formed on the pressure transmission portion 34. It can slide in line contact.

[Third Embodiment]
In the third embodiment, the transmission mechanism in the pressure transmission part 33 and the pressure transmitted part 34 of the second embodiment is as shown in FIGS. 4 and 5, and the major changes are obvious to those skilled in the art. Since it is clear, description is omitted.

  A shaft pin centering on the axis 39 is inserted into the pressure transmission portion 33 of the handle 4 for transmitting the pressure from the pressure portion 7 to the pressure transmission portion 34 of the pressing blade portion 25. The shaft pin centering on the axis 40 is inserted. Further, the pressure transmitting portion 33 transmits pressure via a link 38 supported so that one end can swing on an axis pin centered on the axis 39 and the other end swingably supported on an axis pin centered on the axis 40. The pressure is transmitted to the part 34.

A diagram representing the first embodiment in the standby state by a trigonometric method Projection view (schematic diagram) of the second embodiment in the standby state viewed from the direction of the axis 26 Projection view (schematic diagram) of the clamped second embodiment viewed from the direction of the axis 26 Projection view (schematic diagram) of the third embodiment in the standby state viewed from the direction of the axis 26 Projection view (schematic diagram) of the clamped third embodiment viewed from the direction of the axis 26

Explanation of symbols

1,2,3,21,26,
39,40,41. Axis 4,5. Handle 6. Storage part 7,9. Pressing surface 8. Press blade 10. Needle receiving part 11. Extrusion port 12,20. Staple 13,14,16,17. 15, 18. Finger locking part 19. Slide piece 22. Split 23, 42. Disk shaped part 24. Shaft pin 25. Pressing blade part 27. Cylindrical projection 28. Groove 29. , 36. Point 33. Press transmission part 34. Press received part 37. Straight line 38. Link

  The present invention relates to a stapler for binding thin objects such as paper.

  As a stapler for binding thin objects such as paper, the operation force is increased by using a so-called booster mechanism that allows an increase in the operation stroke amount and suppresses the peak value of the operation force as in Patent Document 1 to Patent Document 3. The idea to mitigate is known.

JP 2005-138248 A JP 2005-022037 A JP 2002-028877 A

Further, in the stapler, in the standby state, the pressing force for pushing the staples and the urging force for maintaining the distance between the staples, and the gap between the pushing port from which the staples are pushed out and the needle receiving part for receiving both ends of the pushed staples are set. An energizing force to keep it has been needed. These urging forces are mostly due to two return springs, and it is considered that the urging forces are set in anticipation of variations in manufacturing of the stapler sliding portion and an increase in sliding resistance due to aging.
In recent years, based on the idea of universal design, the biasing force of a biasing member that biases a pair of handles on which a finger is put away tends to be weakened in order to reduce the operating force in the stapler.

  Due to recent improvements in manufacturing accuracy, design innovations, etc., the urging force for maintaining the distance between the pushing blade that pushes the staple and the staple, the extrusion port from which the staple is pushed out, and the needle receiving portion that receives both ends of the pushed staple It is now possible to weaken the biasing force to maintain the interval between the two, but when the latter biasing, which has a long stroke, is weakened, it is difficult to grasp the pair of handles lightly and wait in the waiting state before pushing out the staples. Often the stapler is about to slip.

  For example, when a booster mechanism is used in the stapler to suppress the peak value of the operation force when pushing the staple in exchange for an increase in the operation stroke amount, the urging force is reduced to a force for returning the pair of handles. In many cases, this may cause the stapler to slip out of the hand. If the biasing force is simply increased, the required operation energy increases in combination with the increased operation stroke amount. The burden of.

  Embodiments of the present invention will be described below with reference to the drawings and the like, but this is intended to make the contents of the present invention easier to understand, and does not reduce the scope of the appended claims.

The stapler according to the invention 1 is, for example, as shown in FIG.
One end is supported so as to be swingable about the axis 1, a handle 4 having a pressing surface 7 on the outer side of the other end and a pressing blade 8 on the inner side,
One end of the handle 5 is supported so as to be swingable about an axis 2 that is substantially parallel to and close to the axis 1, and includes a pressing surface 9 on the outer side of the other end and a needle receiving portion 10 on the inner side,
One end is supported to be swingable about an axis 3 that is substantially parallel to and close to the axis 1, the other end is provided with an extrusion port 11, and the staples (12, 20) can be stored between the handles 4 and 5. A storage unit 6 disposed in
A finger locking portion 15 provided on one of the pressing surfaces 7 and 9 and rotatably supported around an axis 21 substantially perpendicular to the one , and having an insertion port (13, 14) into which a finger can be inserted;
Comprising
The stored staple 12 is pushed onto the pressing blade 8 by pressing the pressing surfaces 7 and 9, and the staple receiving portion 10 receives both ends of the pushed staple 12 and guides the both ends to be bent. It is.

The stapler according to the second aspect of the present invention is the stapler according to the first aspect of the present invention, for example, as shown in FIG.
On the other of the pressing surfaces 7 and 9, a finger locking part 18 having an insertion port (16, 17) into which a finger can be inserted is provided.
It is a stapler.

The stapler according to the invention 3 is, for example, as shown in FIGS.
One end is supported so as to be swingable about the axis 1, a handle 4 including a pressing surface 7 on the outside of the other end, and a pressing transmission portion 33 in the middle,
A handle 5 having one end supported so as to be swingable about an axis 2 substantially parallel to the axis 1 and having a pressing surface 9 on the outside of the other end and a needle receiving portion 10 on the inside;
One end is supported to be swingable about an axis 3 that is substantially parallel to and close to the axis 2, the other end is provided with an extrusion port 11, and the staples (12, 20) can be stored between the handles 4 and 5. A storage unit 6 disposed in
One end portion is supported so as to be able to swing around an axis 26 that is substantially parallel to and close to the axis 3, the pressing blade 8 is provided at the other end, and a pressed transmission portion 34 that receives a force from the pressing transmission portion 33 at the intermediate portion, A pressing blade portion 25 disposed between the handle 4 and the storage portion 6;
A finger locking portion 15 provided on one of the pressing surfaces 7 and 9 and rotatably supported around an axis 21 substantially perpendicular to the one , and having an insertion port (13, 14) into which a finger can be inserted;
Comprising
The stored staple 12 is pushed onto the pressing blade 8 by pressing the pressing surfaces 7 and 9, and the staple receiving portion 10 receives both ends of the pushed staple 12 and guides the both ends to bend. It is.

The stapler according to the invention 4 is the stapler of the invention 3, as shown in FIGS. 4 and 5 , for example .
In the projection viewed from the axial 26 direction, such as from the standby state shown in FIG. 4 that during the extrusion opening 11 and the needle receiving portion 10 is opened, in Figure 5 between the extrusion opening 11 and the needle receiving portion 10 is closed The moving distance from the point 31 to the point 35 on the rotating track 30 of the plane 29 including the pressing surface 7 is larger than the moving distance from the point 32 to the point 36 on the rotating track 30 at the tip of the pressing blade 8 until the clamping state. It is a longer stapler.

The stapler according to the invention 5 is the stapler according to any one of the inventions 1 to 4, for example, as shown in FIG. 1 or FIGS.
The axes 1 and 2 are concentric, and the handle 4 is a stapler supported by the handle 5 so as to be swingable about the axis 1.

As described above, in the present invention, since the finger locking portion 15 that can lock the finger by inserting the finger is provided, in order to reduce the operation force of the stapler, for example, a pair of handles (4 , 5) Even if a method of extremely weakening or not using a biasing member that biases in the direction away from the stapler, a stapler that has simple operability and is difficult to slip from the hand can be obtained.
In addition, it is easy to obtain a finger locking portion 15 having an ideal insertion direction even if there are individual differences in hand shape, differences in how to grip the stapler, differences in which fingers of the hand are inserted, and differences in dominant arms. .

In addition, in the invention 2, in addition to the effects of the present invention, it is possible to obtain a simple stapler that is more difficult to slip from the hand.

In addition, in the invention 4, in addition to the effects of the present invention, it is possible to simultaneously obtain a reduction in operating energy and high-quality operability.

[First Embodiment]
In FIG. 1, handles 4 and 5 are each integrally molded by injection molding of glass fiber reinforced nylon.
Further, a C-shaped finger locking portion 15 with a split 22 having an insertion port 13 and an insertion port 14 opened in the longitudinal direction of the handle 4 is provided on the pressing surface 7 outside the other end of the handle 4. Yes. This finger locking portion 15 assumes that a thumb is inserted. However, when a finger other than the thumb is assumed, the insertion slot 13 extends in a direction substantially parallel to the axis 1 that is the center of swinging of the handle 4. It is preferable to open the insertion port 14. However, since the disk-like portion 23 is fitted into the gap between the other end portion of the handle 4 and is screwed so that the disc-like portion 23 can be rotated from the inside of the handle 4, It can be rotated about an axis 21 that is substantially perpendicular to the surface 7, and it is easy to change the insertion direction of the finger.
Further, a finger locking portion 18 similar to the finger locking portion 15 is provided on the pressing surface 9 outside the other end portion of the handle 5 so as to be rotatable around the axis 41, but is ring-shaped and split. Is not included.
In addition, the finger locking portions (15, 18) may be molded with a resin such as polypropylene having a high elasticity, rubber having a high elasticity, or the like so as to fit the finger more.
In addition, the finger locking portion (15, 18) is used in a suitable shape, such as a ring shape, a C-shape, a cap shape with the insertion port (13, 16) or the insertion port (14, 17) blocked. It is preferable.

Also, the axes 1 and 2 provided at one end portions of the handles 4 and 5 are concentric.
Further, one end of the storage portion 6 is supported so as to be swingable about the axis 3, and the axis 3 is also concentric with the axes 1 and 2, and in fact, an axis pin centering on the axes 1, 2, and 3 24 is inserted as the center axis of these swings.
However, it will be apparent to those skilled in the art that the axes that are concentric here are often not concentric when using various known staplers, particularly mechanisms such as a booster mechanism and a parallel link.

Further, the staple assembly including the leading staple 12 and the trailing staple 20 and the slide piece 19 of the storage unit 6 are stored in the groove of the storage unit 6, and the staple 20 is biased by the slide piece 19. As a result, the staple 12 is urged toward the other end of the storage unit 6.
The pressing blade 8 capable of extruding the staple 12 from the extrusion port 11 provided at the other end of the storage unit 6 is a metal plate partially embedded inside the other end of the handle 4.
Further, the needle receiver 10 provided with a groove for guiding the both ends of the staple 12 to be bent is a metal member partially embedded inside the other end of the handle 5.
Further, in a standby state before pushing out the staple 12, a return spring for keeping the press blade 8 and the staple 12 at an appropriate interval and a return spring for keeping the push port 11 and the needle receiving portion 10 at an appropriate interval are provided. It may be provided.

[ First Reference Example ]
2 and 3, the handles 4 and 5, the storage portion 6, and the pressing blade portion 25 are each formed by press-molding an iron plate.
Further, on the pressing surface 7 outside the other end portion of the handle 4, a rubber-molded ring-shaped finger locking portion 15 having insertion holes 13 and 14 opened in the longitudinal direction of the handle 4 is provided.

Also, the axes 1 and 2 provided at one end portions of the handles 4 and 5 are concentric, and the cylindrical projection 27 centering on the axis 1 movable in the groove 28 of the handle 5 pushes the staple 12 from the standby state. The operation up to this point remains in the vicinity of one end of the groove 28, and moves to the vicinity of the other end of the groove 28 when the staples (12, 20) are replenished.
Further, one end of the storage portion 6 is supported so as to be swingable about the axis 3, the axis 3 is concentric with the axis 26, and actually the shaft pins centering on the axes 3 and 26 are these swings. It is inserted as a moving center axis and supported near the axis 2 on the handle 5.

Further, the pressing blade 8 capable of extruding the staple 12 from the extrusion port 11 provided at the other end of the storage unit 6 is integrally formed with the other end of the pressing blade 25.
Further, the needle receiver 10 provided with a groove for guiding the both ends of the staple 12 to be bent is integrally formed inside the other end of the handle 5.
Further, in a standby state before pushing out the staple 12, a return spring for keeping the press blade 8 and the staple 12 at an appropriate interval and a return spring for keeping the push port 11 and the needle receiving portion 10 at an appropriate interval are provided. It may be provided.

  Further, a convex shape is integrally formed in the pressure transmission portion 33 of the handle 4 for transmitting the pressure from the pressure portion 7 to the pressure transmission portion 34 of the pressing blade portion 25, and a straight line 37 is formed on the pressure transmission portion 34. It can slide in line contact.

[ Second Embodiment]
In the second embodiment, the transmission mechanism in the pressure transmitting portion 33 and the pressed transmitted portion 34 of the first reference example is as shown in FIGS. 4 and 5, and the major changes are for those skilled in the art. Since it is clear, description is omitted.

  A shaft pin centered on the axis 39 is inserted into the pressure transmission portion 33 of the handle 4 for transmitting the pressure from the pressure portion 7 to the pressure transmission portion 34 of the pressing blade portion 25. The shaft pin centering on the axis 40 is inserted. Further, the pressure transmitting portion 33 transmits pressure via a link 38 supported so that one end can swing on an axis pin centered on the axis 39 and the other end swingably supported on an axis pin centered on the axis 40. The pressure is transmitted to the part 34.

A diagram representing the first embodiment in the standby state by a trigonometric method Projection view (schematic diagram) of the first reference example in the standby state viewed from the direction of the axis 26 Projection view (schematic diagram) of the first reference example in the clamped state viewed from the direction of the axis 26 Projection view (schematic diagram) of the second embodiment in the standby state viewed from the direction of the axis 26 Projection view (schematic diagram) of the clamped second embodiment viewed from the direction of the axis 26

Explanation of symbols

1,2,3,21,26,
39,40,41. Axis 4,5. Handle 6. Storage part 7,9. Pressing surface 8. Press blade 10. Needle receiving part 11. Extrusion port 12,20. Staple 13,14,16,17. 15, 18. Finger locking part 19. Slide piece 22. Split 23, 42. Disk shaped part 24. Shaft pin 25. Pressing blade part 27. Cylindrical projection 28. Groove 29. , 36. Point 33. Press transmission part 34. Press received part 37. Straight line 38. Link

Claims (5)

A first handle having one end supported so as to be swingable about a first axis, a first pressing surface on the outside of the other end and a pressing blade on the inside;
A second handle having one end supported pivotably about a second axis substantially parallel to and close to the first axis, a second pressing surface on the outside of the other end, and a needle receiving portion on the inside;
One end of the first handle and the second handle are supported so as to be swingable about a third axis that is substantially parallel to and close to the first axis, and has an extrusion port at the other end so that staples can be stored. A storage unit arranged between
A finger locking portion provided on at least one of the first pressing surface and the second pressing surface, and having an insertion port into which a finger can be inserted;
Comprising
The stored staple is pushed onto the pressing blade by pressing the first pressing surface and the second pressing surface, and the needle receiving portion receives both ends of the extruded staple and bends the both ends. To guide the stapler. The finger locking portion is provided on both the first pressing surface and the second pressing surface.
The stapler according to claim 1. A first handle having a first end supported so as to be swingable about a first axis, a first pressing surface on the outside of the other end, and a pressing transmission portion on an intermediate portion;
A second handle having one end portion supported so as to be swingable about a second axis substantially parallel to the first axis, a second pressing surface outside the other end portion, and a needle receiving portion inside.
One end of the first handle and the second handle are supported so as to be swingable about a third axis that is substantially parallel to and close to the second axis, the other end includes an extrusion port, and can store staples. A storage unit arranged between
One end portion is supported so as to be swingable about a fourth axis that is substantially parallel to and close to the third axis, a pressing blade at the other end, and a pressed transmission portion that receives a force from the pressing transmission portion at an intermediate portion And a pressing blade portion disposed between the first handle and the storage portion,
A finger locking portion provided on at least one of the first pressing surface and the second pressing surface, and having an insertion port into which a finger can be inserted;
Comprising
The stored staple is pushed onto the pressing blade by pressing the first pressing surface and the second pressing surface, and the needle receiving portion receives both ends of the pushed staple and the both ends are bent. To guide the stapler. In the projection view seen from the fourth axis direction, the pressing blade from a standby state in which the space between the extrusion port and the needle receiving portion is open to a clamping state in which the space between the extrusion port and the needle receiving portion is closed The moving distance on the rotating orbit of the plane including the first pressing surface is longer than the moving distance on the rotating orbit of the tip.
The stapler according to claim 3. The first axis and the second axis are concentric, and the first handle is supported by the second handle so as to be swingable about the first axis.
The stapler according to any one of claims 1 to 4.

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