JP2003048176A - Driver unit and electric stapler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driver unit capable of removing a cartridge from a magazine even when jamming occurs and an electric stapler. SOLUTION: This driver unit is provided with a fixed frame 12, an inner frame 20, the magazine 40, the cartridge 50, a driver 70 mounted on the magazine 40 so as to move vertically and supported on the inner frame 20, and an energizing member for energizing the magazine 40 downward. The driver 70 advances into a driving part to drive the staple by moving the inner frame 20 upward together with the magazine 40 due to the rise of a clincher part 111 of a clincher unit 100. When the clincher part 111 lowers, the inner frame 20 and the magazine 40 lower and return to an initial position by the energizing member. The magazine 40 is pivoted on the inner frame 20 around a shaft 44, and a rear part side of the magazine 40 is directed upward to turn the magazine 40 in order to remove the cartridge 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric stapler driver unit and an electric stapler in which a driver unit and a clincher unit are vertically separated.

[0002]

2. Description of the Related Art Conventionally, an electric stapler in which a driver unit and a clincher unit are vertically separated is known.

In this electric stapler, staples are ejected by the vertical movement of the driver of the driver unit, and the legs of the ejected staples are clinched by the clincher of the clincher unit. The driver unit is provided with a drive motor for moving the driver up and down, and the clincher unit is provided with a drive motor for operating the clincher.

As described above, since the two electric motors are provided, there is a problem that the device becomes large and expensive. Therefore, an electric stapler has been proposed in which one drive motor ejects staples and clinches the legs of the ejected staples.

In such an electric stapler, the clincher portion of the clincher unit is constructed to move up and down by the drive motor, and the stapler is ejected from the driver unit by the vertical movement of the clincher unit.

The driver unit is mounted on a fixed frame so as to be movable up and down, a driver mounted on the magazine so as to be movable up and down, and is detachably mounted on the magazine and accommodates sheet staples and staples. And a spring for urging the magazine downward and urging the driver upward with respect to the magazine.

The magazine is designed to move up and down by the vertical movement of the clincher unit of the clincher unit. When the magazine abuts against the rising clincher unit against the biasing force of the spring, the magazine is raised.
The driver descends relative to the magazine and enters the ejection portion of the cartridge. Then, when the driver enters, the staples are ejected from the ejection portion. The staked leg of the staple is clinched by the clincher of the clincher unit, and then the clincher unit descends. When the clincher unit is lowered, the magazine is lowered by the biasing force of the spring and returns to the initial position.

That is, the driver is raised relative to the magazine by the biasing force of the spring and returns to the initial position.

[0009]

By the way, in such a driver unit of the electric stapler, since the driver is moved up relatively to the magazine by the spring, the driver is driven when a staple jam occurs. There was a problem that the cartridge could not be removed from the magazine because it could not be removed from the ejection section of the cartridge.

The present invention has been made in view of the above problems, and an object thereof is to provide a driver unit and an electric stapler which can remove a cartridge from a magazine even if a jam occurs.

[0011]

In order to achieve the above object, the invention of claim 1 is a movable frame mounted on a fixed frame so as to be vertically movable, and a magazine mounted on the movable frame and vertically moved together with the movable frame. A cartridge that is detachably mounted in the magazine and that stores sheet staples and that has a striking portion on the tip side for striking the staples; and a cartridge that is mounted on the front side of the magazine and moves up and down relative to the magazine. The clincher unit includes a driver axially supported by a fixed frame through a long hole of the movable frame, and a biasing member that biases the magazine downward and biases the driver upward with respect to the magazine. The movable frame resists the urging force of the urging member together with the magazine due to the ascent of the elevating means. The movable frame and the magazine are lowered by the urging member when the driver enters the ejection portion to eject the staples and the clincher unit is lowered by being moved upward with respect to the fixed frame. A driver unit adapted to return to a position, wherein the magazine is pivotally supported on a movable frame at a position rearward of an axial fulcrum of the driver, and the magazine is rotated around the pivot shaft with respect to the movable frame. The feature is that it has been made possible.

A second aspect of the present invention is an electric stapler including the driver unit.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an electric stapler according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 10 denotes an upper and lower separation type electric stapler. The electric stapler 10 is composed of a driver unit 11 and a clincher unit 100 arranged below the driver unit 11. The electric stapler 10 is attached to, for example, a copying machine.

The clincher unit 100 is provided with a clincher portion (elevating means) 111 that is vertically movable, and an up-and-down mechanism 112 that vertically moves the clincher portion 111.
A motor 113 for driving the up-and-down mechanism 112 and the like are provided. Reference numeral 114 denotes a clincher arm that causes a clincher (not shown) to rotate, and the clincher arm 114 rotates about a shaft 115. The rotation of the clincher arm 114 is performed by the rotation of the cam 116.

The driver unit 11 is shown in FIGS.
2, a fixed frame 12 fixed to a base (not shown), an inner frame (movable frame) 20 attached to the fixed frame 12 so as to be vertically movable,
A magazine 40 rotatably mounted inside the inner frame 20, a cartridge 50 detachably mounted on the magazine 40, a driver 70 vertically movably mounted on the magazine 40, and as shown in FIG. Forming plate 80 and the like.

As shown in FIG. 5, the fixed frame 12 is formed in a U shape in plan view, and includes a front plate portion 13 and the front plate portion 13.
And a side plate portion 14 extending rearward from both sides of the. A screw hole 15 is provided in an upper portion of the side plate portion 14, and a circular protrusion 16 protruding inward is provided below the screw hole 15. A female screw is cut in the screw hole 15, and a screw 18 is screwed into the screw hole 15 as shown in FIGS. 1 to 4. Reference numeral 17 is a mounting portion for fixing to a base (not shown).

The inner frame 20 includes a pair of side plates 2.
1, 21 and a bottom plate 2 in which the bottoms of the side plates 21, 21 are connected
2 and. A slit-shaped elongated hole 30 extending vertically is formed on the front side of each side plate 21.
The bush 23 is attached to the. A long hole 24 extending in the up-down direction is formed in the bush 23. Further, in the side plate 21, a long hole 25 slightly extending in the left-right direction behind the long hole 30 (on the right side in FIG. 6), an arc-shaped long hole 26 below the long hole 25, and a slanted lower part at the rear portion. A long hole 27 formed in the above is provided, and a large hole 28 extending in the front-rear direction is provided between the long holes 26 and 27. A projecting portion 29 projecting inward is provided at an intermediate position above the side plate 21.

Then, as shown in FIGS. 7 and 8, the fixed frame 1 is provided above the elongated holes 24 of the bush 23 mounted on the left and right side plates 21 of the inner frame 20.
A shaft 19 of a screw 18 screwed into the second screw hole 15 is inserted, and a protrusion 16 of the fixed frame 12 is inserted in a lower position of the elongated hole 24. The inner frame 20 is vertically movable along the fixed frame 12. In detail, the long hole 24 of the bush 23 of the fixed frame 12, that is, the long hole 3 of the fixed frame 12.
The inner frame 20 can be moved up and down in parallel with 0.

As shown in FIG. 9, the magazine 40 has both side wall portions 41, a top plate wall portion 42, a front wall portion 48, etc., and these side wall portions 41, the top plate wall portion 42, the front wall portion 48, etc. Forms a room (not shown) for mounting the cartridge 50. Further, as shown in FIG. 10, the front end wall portion 40 is provided on the lower portion of the leading end side (left side in FIG. 9) of the magazine 40.
A gap K1 into which the driver 70 and the forming plate 80 enter is formed between the upper portion of T and the lower portion of the front wall portion 48, and a lower guide wall 40H is provided. The lower side of the lower guide wall 40H is the transport portion 51 of the cartridge 50.
Is a space portion 40U into which is inserted.

A guide groove 43 extending vertically is formed on the front side of each side wall 41, and the side wall 4 behind the guide groove 43 is formed.
A shaft 44 is provided between the first and the second shafts 41. Also, each side wall 4
A protrusion 45 is provided below the first shaft 44. Protrusion 4
5, one end of a spring 46 is attached, and the other end of the spring 46 is attached to a shaft 47. Both ends of the shaft 47 are connected to the inner frame 2 as shown in FIG.
The shaft 47 is attached between the side plates 21 and 21 by being inserted into the long holes 27 and 27 of the side plates 21 and 21 of 0.

Then, both ends of the shaft 44 between the side wall portions 41 of the magazine 40 are inserted into the elongated holes 25 of the side plates 21 of the inner frame 20, respectively, and the protrusions 45 of the magazine 40 are inserted.
Is inserted into the long hole 26 of the inner frame 20 so as to be movable along the long hole 26, and the magazine 40 is rotatable around its shaft 44. That is,
The magazine 40 has an inner frame 2 by its shaft 44.
It is pivotally supported between 0 side plates 21.

As shown in FIG. 11, the driver 70 has a driver plate portion 72 having a notch 71 extending upward from the lower end.
And a board portion 73 extending in the left-right direction above the driver plate portion 72, and projecting portions 74 protruding rearward from both ends of the board portion 73. The long hole 7 is formed in the protruding portion 74.
5 is formed. Further, notches 76 are formed at the upper ends on both sides of the substrate portion 73.

The forming plate 80 has a bifurcated forming plate plate portion 8 as shown in FIG.
1, a substrate portion 83 formed on the upper portion of the forming plate plate portion 81, an extending portion 85 extending forward from both sides of the substrate portion 83, and a support projecting downward from a lower portion of the extending portion 85. And a portion 86.

As shown in FIGS. 13 to 15, the driver 70 and the forming plate 80 have a forming plate portion 81 stacked behind the driver plate portion 72, and an extending portion 85 of the forming plate 80 is formed. The forming plate 80 is attached to the driver 70 by being inserted into the notch 76 of the substrate portion 73 of the driver 70.

The driver 70 and the forming plate 80 are mounted on the front wall portion 48 of the magazine 40 so as to be vertically movable (see FIG. 16: the forming plate 80 is omitted in FIG. 16), and each protrusion is formed. A shaft 19 of a screw 18 screwed into a screw hole 15 of the fixed frame 12 is inserted into the long holes 75, 75 of the portions 74, 74, and the tip end of the shaft 19 is a guide groove of the magazine 40 as shown in FIG. 43 has been inserted.

That is, as shown in FIG. 17, the driver 70 and the forming plate 80 are fixed to the fixed frame 12 by the screws 18 at the illustrated height position. Then, the inner frame 20 and the magazine 40
Is raised relative to the fixed frame 12, the driver 70
And the forming plate 80 is lowered with respect to the magazine 40. That is, the driver 70 and the forming plate 80 are the same as the inner frame 20.
And magazine 40 corresponding to the vertical movement of magazine 40
It will move up and down relatively along the front wall portion 48.

Further, one end of a spring (biasing member) 89 is locked to the extending portion 85 of the forming plate 80,
The other end of the spring 89 is locked to the protruding wall portion 40Ta (see FIG. 10) of the front end wall 40T of the magazine 40. The supporting portion 86 of the forming plate 80 is the spring 89.
And supports the spring 89. The driver 89 and the forming plate 80 are biased upward by the spring 89 with respect to the magazine 40. In other words, as shown in FIG.
0 is urged downward by the spring 89 with respect to the fixed frame 12.

A pair of link members 90 is provided between the projecting portion 74 of the driver 70 and the inner frame 20, as shown in FIGS. 7, 15 and 16.

Each link member 90 is shown in FIGS.
As shown in, it is formed in an L shape. A triangular hole 91 is formed in the middle of the link member 90, and a shaft hole 92 is formed behind the hole 91. Further, the link member 90 is formed with a stopper portion 93 that extends rearward and obliquely downward at the rear side of the shaft hole 92. Then, both ends of the shaft 44 of the magazine 40 are inserted into the shaft hole 92, and the shaft 19 of the screw 18 screwed into the fixed frame 12 is inserted into the hole 91.
Is loosely fitted.

When the magazine 40 rises with respect to the fixed frame 12, the link member 90 rotates counterclockwise around the shaft 44 and the stopper portion 93 causes the inner frame 2 to move.
The magazine 40 is brought into contact with the protruding portion 29 of 0 to stop the rising of the magazine 40 at a predetermined height position (see FIG. 23).

The cartridge 50, as shown in FIG.
A storage unit 51 for stacking and storing sheet staples (not shown)
And a transport section 52 protruding leftward at the bottom of the storage section 51.
And have. As shown in FIG. 19, the transport section 52 includes guide plates 54 and 55 forming a transport path 53 for transporting sheet staples, and a face plate 56 disposed in front of the guide plates 54 and 55. , And a pusher 57 disposed below the guide wall 55. And
The leading end of the transport unit 52 serves as the ejection unit that ejects the staples.

The tip of the guide plate 55 and the face plate 5
A gap K3 is formed between the driver plate portion 6 and the driver 6, and the driver plate portion 72 of the driver 70 enters the gap K3 from above to below. The leading end portion of the guide plate 55 is an anvil portion 55a for forming staples in a U shape. The pusher 57 is biased forward by a spring (not shown). Further, at both end portions of the face plate 56, side plate portions 58 extending rearward (rightward in FIG. 3) are provided.
Is formed, and the rear portion of the side plate portion 58 is pivotally supported.
The face plate 56 is rotatable counterclockwise about the shaft 59, and when staples are stuck between the face plate 56 and the pusher 57, the face plate 56 is rotated counterclockwise. By
The jammed staples can be removed. [Operation] Next, the operation of the electric stapler configured as described above will be described.

First, the cartridge 50 is mounted in the magazine 40. When the cartridge 50 is mounted in the magazine 40, the transport unit 52 of the cartridge 50 is inserted into the space 40U of the magazine 40. And the cartridge 50
When the magazine 40 loaded with is set in the inner frame 20 in the state shown in FIGS. 1 and 2, the rear portion of the storage portion 51 of the cartridge 50 is pressed by the shaft 47 of the inner frame 20 as shown in FIG. become.

Before the clincher unit 111 of the clincher unit 100 is raised, the inner frame 20 and the magazine 40 are lowered by the urging force of the spring 89 with respect to the fixed frame 12 as shown in FIG. 1 (initial position). Is located in. Also, the inner frame 20
When the magazine 40 is located at the initial position, as shown in FIG. 20, the tip (lower end) of the driver plate portion 72 of the driver 70 enters the gap K1 of the magazine 40 and the cartridge 50. It is located above the gap K3 of the carrying section 52 (initial position).

In this state, when a sheet bundle (not shown) is fed between the driver unit 10 and the clincher unit 100 and placed on the upper surface of the driver unit 100, for example, a spelling signal from a copying machine (not shown) or the like. Is output and the motor 113 of the clincher unit 100 is driven. By driving the motor 113, the up-and-down mechanism 112 raises the clincher portion 111.

When the clincher portion 111 rises to a predetermined position, the clincher portion 111 comes into contact with the lower portion of the magazine 40 via the sheet bundle, and the inner frame 20 and the magazine 40 are fixed against the biasing force of the spring 89 as the clincher portion 111 rises. It goes up with respect to the frame 12. The inner frame 20 and the magazine 40 are shown in FIGS.
When raised to the position shown in FIG. 3, the stopper portion 93 of the link member 90 contacts the protruding portion 29 of the inner frame 20, and the raising of the magazine 40 is stopped.

On the other hand, the driver 70 descends with respect to the magazine 40 as the magazine 40 rises, and the lower end of the driver plate portion 72 of the driver 70 causes the gap K3 of the transport portion 52 of the cartridge 50 by this lowering. Enter inside. Then, when the magazine 40 is moved up to the position shown in FIGS. 21 to 23, the driver plate portion 72 is moved to the position shown in FIG. 24 by the face plate 56 and the pusher 5.
7 will be inserted between them and the staples will be ejected. The leg portion of the staple that has been ejected penetrates the sheet bundle.

When the magazine 40 stops rising, the cam 1
By the rotation of 16, the clincher arm 114 is rotated clockwise around the shaft 115 from the position shown in FIG. 21, and the clincher not shown is rotated by this rotation. By the clincher's rotating operation, the legs of the staple penetrating the sheet bundle are clinched.
When the clincher is rotated, the magazine 40 is stopped by the link member 90 at the position shown in FIG.
The clinching by the clincher is surely performed.

When the clinching is completed, the clincher portion 111 of the clincher unit 100 descends. Along with this lowering, the urging force of the spring 89 lowers the magazine 40 and the inner frame 20. As the magazine 40 descends, the driver 70 rises relative to the magazine 40, and the magazine 40 and the inner frame 20 return to the initial position shown in FIG.
When the magazine 40 returns to the initial position, the driver 70 is also shown in FIG.
It will return to the initial position indicated by 0.

The forming plate 80 moves up and down together with the driver 70 to form staples in a U-shape like an ordinary electric stapler, and a detailed description thereof will be omitted.

By the way, as shown in FIG. 24, when a jam occurs when the driver 70 ejects the staples, that is, the staple S is the face plate 5.
6 is stuck between the pusher 57 and the driver plate portion 72.
Is fixed in the position shown in FIG. 24, and even if the clincher portion 111 of the clincher unit 100 is lowered,
The urging force of the spring 89 prevents the magazine 40 and the inner frame 20 from descending. That is,
As shown in FIG. 25, when the driver plate portion 72 of the driver 70 is between the fixed plate 12 and the face plate 56 and the pusher 57, the cartridge 50 cannot be pulled out from the magazine 40.

From the state shown in FIG. 25, the magazine 40 is rotated counterclockwise around the shaft 44 with respect to the inner frame 20, that is, the fixed frame 12. Magazine 4
When 0 is rotated counterclockwise around the shaft 44 as shown in FIG. 26, the height position of the driver 70 is fixed by the shaft 19 of the screw 18 of the fixed frame 12. Since the driver 70 is rotated, the driver plate portion 72 of the driver 70 is removed from between the face plate 56 and the pusher 57 as the magazine 40 is rotated.

That is, as shown in FIG. 26, the magazine 40
The bottom point 40P (the point corresponding to the tip portion 72a of the driver plate portion 72 in FIG. 25) moves on the arc E1 of radius R1 about the shaft 44 as the magazine 40 rotates. On the other hand, the tip end portion 72a of the driver plate portion 72 of the driver 70 moves on the arc E2 having the radius R2 (R2 <R1) about the shaft 19 and the tip end of the driver plate portion 72 rotates. The difference between the portion 72a and the point 40P increases.

Since the shaft 19 does not move with respect to the fixed frame 12, the shaft 4 of the magazine 40 tries to eliminate the distance between the tip portion 72a of the driver plate 72 and the point 40P.
4 starts to fall relative to the fixed frame 12.
When the shaft 44 lowers relative to the fixed frame 12,
The magazine 40 is lowered relative to the fixed frame 12, which means that the magazine 40 is lowered relative to the shaft 19.
The relative positional relationship of 0 approaches the normal standby state.

That is, the magazine 40 returns from the state in which it is raised to the driver 70 to the normal standby state, that is, the state in which the driver 70 is lowered from the magazine 40 is raised and returns to the normal standby state. It will be. Due to the rise of the driver 70, the driver plate 72
Comes out between the face plate 56 and the pusher 57.

Then, the magazine 4 is moved to the position shown in FIG.
When 0 is rotated, that is, when the magazine 40 is rotated about 32 degrees with respect to the fixed frame 12, the driver plate portion 72 comes out from between the face plate 56 and the pusher 57 to the position shown in FIG. . When you get out of here,
The jam almost eliminates the frictional force applied to the driver plate portion 72, and the urging force of the spring 89 causes the driver 70 to move upward with respect to the magazine 40. The driver plate portion 72 of the driver 70 is placed between the face plate 56 and the pusher 57. Will completely escape from.

The driver plate portion 72 is the face plate 56.
When the cartridge 50 is completely removed from between the pusher 57 and the pusher 57, the cartridge 50 is removed from the magazine 40, and the face plate 56 of the cartridge 50 is rotated counterclockwise about the shaft 59 so that the face plate 56 and the pusher 57 are separated from each other. Just remove the staples in between.

As described above, even if a jam occurs, by rotating the magazine 40, the driver plate portion 72 is removed from between the face plate 56 and the pusher 57, and the cartridge 50 can be removed from the magazine 40. .

[0050]

According to the present invention, even if a jam occurs, the cartridge can be removed from the magazine.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a configuration of an electric stapler according to the present invention.

FIG. 2 is a perspective view showing a driver unit of an electric stapler.

FIG. 3 is an explanatory diagram showing a schematic configuration of a driver unit.

FIG. 4 is a perspective view of the driver unit as viewed from the rear.

FIG. 5 is a perspective view showing a configuration of a fixed frame.

FIG. 6 is a perspective view showing a configuration of an inner frame.

FIG. 7 is a cross-sectional view showing a mounting relationship between a fixed frame and a magazine.

FIG. 8 is an enlarged cross-sectional view showing a mounting relationship between a fixed frame and an inner frame.

FIG. 9 is a perspective view showing a magazine in which a cartridge is mounted.

FIG. 10 is a partially enlarged view showing the configuration of the lower end of the magazine.

FIG. 11 is a perspective view showing a driver.

FIG. 12 is a perspective view showing a forming plate.

FIG. 13 is a perspective view showing a state in which a driver and a forming plate are overlapped with each other.

FIG. 14 is a plan view showing a state in which a driver and a forming plate are overlapped with each other.

FIG. 15 is an explanatory diagram showing a magazine, a link member, a driver, and a forming plate.

FIG. 16 is an explanatory diagram showing a state where a driver and a link member are mounted on a magazine.

FIG. 17 is a side view showing a magazine.

FIG. 18 is an explanatory diagram showing a relationship between a magazine and a fixed frame.

FIG. 19 is an enlarged partial view showing the structure of the carrying section of the cartridge.

FIG. 20 is an explanatory diagram showing an initial position of a driver.

FIG. 21 is an overall explanatory view showing a state where the magazine and the inner frame are raised with respect to the fixed frame.

FIG. 22 is an explanatory diagram showing a state where the magazine is raised with respect to the fixed frame.

FIG. 23 is an explanatory diagram showing a state in which the magazine stops being lifted by the link member.

FIG. 24 is an explanatory diagram showing a state in which the driver descends with respect to the magazine and ejects staples.

FIG. 25 is an explanatory diagram showing a positional relationship among a driver, a magazine, and a fixed frame.

FIG. 26 is an explanatory diagram showing a state where the magazine is rotated.

FIG. 27 is an explanatory view showing a state where the magazine shown in FIG. 26 is further rotated.

FIG. 28 is an explanatory diagram showing a state where the driver plate portion comes out when the magazine is rotated.

[Explanation of symbols]

10 Driver unit 12 fixed frame 20 Inner frame (movable frame) 40 magazines 44 axis 50 cartridges 70 driver 89 Spring (biasing member) 100 clincher units 111 Clincher section (ascending means)

Claims (2)

[Claims] 1. A movable frame mounted on a fixed frame so as to be movable up and down, a magazine mounted on the movable frame and movable up and down together with the movable frame, a magazine detachably mounted on the magazine and containing sheet staples, and staples. A cartridge having a hitting portion on the front end side for hitting, and a driver mounted on the front side of the magazine, vertically moving relative to the magazine, and axially supported by a fixed frame through a long hole of the movable frame, A biasing member that biases the magazine downward and biases the driver upward with respect to the magazine, and the movable frame together with the magazine causes the biasing force of the biasing member by raising the raising means of the clincher unit. Against the fixed frame while moving against the A driver unit adapted to move the movable frame and the magazine downward by the urging member and return to the initial position when the rivet enters the ejecting portion and ejects the staple, and the clincher unit descends, A driver unit characterized in that the magazine is pivotally supported on a movable frame at a position rearward of a shaft fulcrum of the driver, and the magazine is rotatable with respect to the movable frame around its pivot axis. 2. An electric stapler comprising the driver unit.