JPS5932539Y2 - stapler - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a stapler with a reduced binding load, and particularly to a stapler with a handle that can be easily opened and closed.

A conventionally used hand stapler has a bending table for bending the staples at one end of the base member, and a bearing plate rising up from the other end of the base member.
A pivot shaft is inserted in the transverse direction into this bearing plate, and a magazine member loaded with staples and a handle member having a driver at its tip are supported in a freely pivotable manner.

Although this hand stapler has a sufficient stitching depth, the stitching load is large (particularly if it is used for business or children's crafts, it has the disadvantage of damaging the worker's fingers and fingers if used for a long time). there were.

The purpose of the present invention is to provide a new stapler that significantly reduces the binding load, has fewer parts, and reduces the number of assembly steps.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

FIG. 1 shows a longitudinal section showing the entire stapler 1 of the present invention.

In this state, the handle member 2 is attached to the magazine member 3.
is closed to

FIG. 2 shows a state in which the handle member 2 is opened relative to the magazine member 3.

In FIG. 1, the driver arm 4, magazine member 3, and clincher arm 5 are mutually connected to each other by a pivot 7 as a cylindrical second pivot at the other end (right end in FIG. 1) of the clincher arm 5. It is assembled so that it can pivot freely.

At the tip of the driver arm 4 (left end in Figure 1),
Driver piece 9 with a width corresponding to the crown width of staple 8
is bent downward.

Both side portions of the driver arm 4 are bent downward to form stapler holding pieces io and 1i.

A spring member pressing piece 1 is attached to the rear of this stemole pressing piece 11.
2 is formed.

The staple holding pieces 10 and 11 are tapered slightly downward toward the rear.
A relief portion 13 is provided at the front end portion of 110.

This relief portion 13 forms a step with respect to the other portions of the staple holding piece 10, 110, and functions to escape the thickness of the staple jump prevention portion 14 formed at the distal end portion of the magazine member 3.

The outer width of the above-mentioned stay mold holding pieces io, i1 is smaller than the inner width of the magazine member 3, so that the stay mold holding pieces 10,
11 can enter and exit the magazine member 3 during the binding operation.

Furthermore, since the driver arm 4 is arranged inside the magazine member 3, the pivot shaft 7 can use the inner surface of the handle member 2 as a stopper, so a special retaining ring or the like is installed on both sides of the pivot shaft 70. No need to wear it.

The spring member pressing piece 12 forms a step with respect to the stay mold pressing piece 11 and is suspended further downward, and has a right triangular shape, and the lower end 12aIfC allows the spring member 15 to
is in constant contact with.

The driver arm 4 is supported by the spring member 15 in a state where it is biased to open at its tip with respect to the magazine member 3.

On the rear side of the spring member pressing piece 12, drive shaft fitting parts 42 for fitting a driver arm drive shaft 41 for driving the driver arm 4 by the handle member 2 are provided on both sides of the driver arm 4. ing.

On the other hand, a stopper (not shown) between the driver arm 4 and the magazine member 30 prevents the driver arm 4 from opening to the point where it becomes impossible to perform binding operations on the magazine member 3.

As described above, the driver arm 4 is an integral part of the handle member, driver member, and stapler holding member of the conventional stapler, and the number of parts is reduced from three to one.

The magazine member 3 has side portions 16a on both sides at its distal end.

A driver piece guide portion 17 is provided which is bent toward the tip side from 16b and has a slightly tapered upper end.

A staple punching hole 18 is opened in the bottom portion 17a of the magazine member 3 adjacent to the lower end of the driver piece guide portion 17 and on the rear side (right side in FIG. 1).

On the other hand, a side portion 16a of the magazine member 3 is located close to the rear side of the driver piece guide portion 15 and separated from the staple punching hole 18 by a width in the front-rear direction.

A staple jump prevention part 14 is provided above and horizontally bent from 16b.

The length of this staple jump prevention portion 14 in the front-rear direction is extremely shorter than that of a conventionally known staple holding portion, and shorter than the length of the escape portion 13 of the driver arm 4.

The rear end portion of the staple jump prevention portion 14 (in FIG. 1,
A tapered staple insertion guide surface 19 is formed at the right end).

This staple loading guide surface 19 is useful when a new connected staple row is supplied to the rear end of the staple 8 and staple row 20 that are being driven, and the driver piece 9 has completed the staple driving process. Even if the leading end portion of the replenished connected staple row rises slightly and assumes an oblique position when the staple row rises, the leading end portion of this connected staple row can smoothly slip under the staple jump prevention portion 14. guide you as follows.

On the rear side of the magazine member 3 (that is, as shown in FIG. 1, adjacent to the side part 16b and along the longitudinal direction of this side part 16b, a rectangular long hole 22 is opened in the bottom part 17a of the magazine member 3. are doing.

The spring member pressing piece 12 of the driver arm 4 enters and exits through this elongated hole 22.

A tip support piece 24 is provided below the staple jump prevention portion 14 and rises from the bottom portion 17a to support the tip 23a of the button guide rod 23, and is provided further rearward than the elongated hole 22 to guide the button. A rear end support piece 25 that supports the rear end of the lot 23 is formed rising from the bottom portion 17 .

The bushing guide rod 23 is fixedly supported by these support pieces 24 and 25.

A button spring 26 having the properties of a compression spring is fitted into the button guide rod 23, and the staple row 2
Button 2 that pushes the 0 etc. toward the staple punching hole 18
7 are arranged so that they can slide freely.

The staple jump prevention section 14 includes a connected staple row 20.
Since it is shorter than the length of the magazine member 3, the button 27 is simply pulled to the rear end of the magazine member 3, and a new connecting staple row 20 is inserted between the rear end of the staple jump prevention part 14 and the tip of the button 27. Sufficient space is secured to charge the

A spring member mounting portion 28 is provided at a position between the rear end support piece 25 and the elongated hole 22 to protrude further downward from the bottom portion 17a.

The spring member sealing portion 28 is located forward of the pivot hole 29 opened at the rear end portions of the side portions 16a and 16b, and the spring member 15 is attached to one end 15 of the spring member 15.
a is fixed.

The clincher arm 5 is configured with a curve that expands downward as a whole, and a clincher base 31 has a clincher groove 30 formed at its tip portion (the left end portion in FIG. 1).
is formed by rising upwards.

A mounting support piece 32 is formed further toward the distal end side of the clincher stand 31 and extends further downward.

Regulating pieces 33 are formed on both sides of the clincher arm 5 so as to gradually increase in height toward the rear end.

The inner width of this regulating piece 33 is larger than the outer width of the magazine member 3, and it slides on the side portions 16a, 16b of the magazine member 3.

This prevents the magazine member 3 and the driver arm 4 from wobbling in the lateral direction.

A curved bulge portion 34 bulging downward is formed at approximately the middle portion of the clincher arm 5 .

The lower end surface of this bulging portion 34 is continuous with a plane,
The joint between the regulating piece 31 and the bulging portion 34 is continuous by a curved surface.

By forming the bulge 34 in this way,
During the spelling operation, the clincher arm 5 fits well into the clincher arm 5, and the force for the spelling operation is applied to the clincher arm 5 from the clincher arm 5 as well.
, and a curved mounting support piece 35 provided at the rear end portion (right end in FIG. 1) of the clincher arm 5 to place the stapler 1 and the clincher arm 5 on a flat surface such as a desk surface. Even when placed in contact with the top, it can be placed in a stable position.

At the rear end of the clincher arm 5, an upright bearing member 6 and a mounting support piece 35 that is curved downward and hangs down are formed.

In this bearing, a shaft 36 as a first pivot that serves as a pivot point for the nodule member 2 is formed by burring on both outer sides of the member 60.

Since the above-mentioned placement support piece 35 is curved so that the inner side (the left side in FIG. 1) is concave, even when it comes into contact with the lower end side of the log during the spelling operation, it can maintain a smooth groove. There is no risk of injury.

Moreover, when the handle member 2 is opened to approximately 180 degrees with respect to the clincher arm 5, the mounting support piece 35 is moved to the edge 38 of the rear end opening 37 formed on the rear end side and upper surface of the handle member 2. acts as a stopper by coming into contact with the

The spring member 15 is connected to a first spring piece 39 and a second spring piece 40 via one end 15a so that they can each operate independently.

The first spring piece 39 pushes up and supports the driver arm 4,
The second spring piece 40 comes into contact with the clincher arm 5 and functions to push up and support the magazine member 3 with respect to the clincher arm 5.

The second spring piece 40 is set narrower than the first spring piece 39, and has a smaller restoring force than the first spring piece 39.

Further, the tip end 40a of the second spring piece 40 is bent back slightly upward, and is in contact with the tapered inner surface (upper side in FIG. 1) 41a of the bulge 34 of the clincher arm 5.

As shown in FIG. 1, the inclination of the second spring piece 40 is determined by
Moreover, the spring member mounting portion 28 is also located on the inclination direction of the second spring piece 40.

As a result, even during the binding operation in which the clincher arm 5 approaches the magazine member 3 relatively, the displacement of the second spring piece 40 is such that the diameter connecting the pivot 7 and the tip 40a of the second spring piece 40 is clockwise. The effect is that the restoring force accompanying the deflection of the second spring piece 40 changes uniformly, without causing any misalignment between the tip 40a and the inner surface 41a of the bulging portion 34. , and the load applied to the hand becomes stable.

Further, since the second spring piece 40 has a smaller spring force than the first spring piece 39, when performing a binding operation, the magazine member 3 approaches the clincher arm 5 first, and the staple ejection hole 18 closes to the clincher arm 5. After coming into contact with the groove 30, the first spring piece 39 begins to bend due to the pressing force of the spring member suppressing piece 12 of the driver arm 4, and the driver piece 9 presses the staple 8.
Sequence movements such as hitting the ball are possible.

The handle member 2 is attached to cover the driver arm 4 and pivots about a shaft 36 during the binding operation.

The handle member 2 is made of plastic, has a generally box-like shape, and is provided with side walls 43 on both sides.

A groove 44 as shown in FIG. 1 is formed in this side wall 43. As shown in FIG.

This groove 44 corresponds to the part where the axis 36 shifts relative to the handle member 2 when the needle member 2 is opened to approximately 180° relative to the clincher arm 5 during normal binding work. It consists of a straight groove 44a and an arcuate groove 44b projecting obliquely upward from the straight groove 44a.

Normally, when binding work is being performed, the shaft 36 is located at one end 44cK of the straight groove 44a, and when it is completely opened 180 degrees with respect to the clincher arm 5, the shaft 36 is located at one end 44cK of the straight groove 44a.
It is located at the other end 44d.

The other end 44d is formed into a cut-through, making it easy to attach the handle member 2 to the driver arm 4.

Further, during normal spelling work, the pivot shaft 7 only moves slightly in the vicinity of the portion where the arcuate groove 44b is joined to the straight groove 44a.

The handle member 2 is completely aligned with the clincher arm 5.
When opened by 80 degrees, the pivot T once reaches one end 44e of the arc-shaped groove 44b, and then returns to its original position as shown in FIG.

That is, by providing this arcuate groove 44b, the handle member 2 can be completely opened to nearly 180 degrees with respect to the clincher arm 5 and the magazine member 3, making it easier to load the stapler into the magazine member 3. Since the pivot shaft 7 is completely within the arcuate groove 44b during this opening operation, the rear end opening 37 formed at the rear end portion of the handle member 2 is not forcibly pushed open. There is no need to force yourself too hard.

Recesses for engaging both ends of the driver arm drive shaft 410 are provided on the inner surface of the side wall 43.

The engagement between this recess and the driver arm drive shaft 41 allows the handle member 2 to lightly drive the driver arm 4, and the binding load is significantly reduced.

Further, when the handle member 2 is opened relative to the clincher arm 5, the driver arm 5 is also opened from the magazine member 3 at the same time due to the engagement of the driver arm drive shaft 41 with the recess.
Opening operation against.

As described above, according to the present invention, since the handle member has a groove formed in a shape that allows the clincher arm and the magazine member to move relative to the handle member, the opening/closing operation of the handle member with respect to the clincher arm is facilitated. It is extremely flexible and has effects such as simplifying the assembly process, eliminating stress on the strength of the handle member, and reducing the number of parts.

[Brief explanation of the drawing]

1 and 2 are longitudinal sectional views of the stapler of the present invention, in which FIG. 1 shows the handle member in a position where it can perform binding operations, and FIG. 2 shows the handle member relative to the clincher arm. Shown fully open. 1... Stapler 2... Handle member, 3... Magazine member, 4... Driver arm, 5... Clincher arm 6...
...Bearing member, 7... Pivot (second shaft)
, 8... Staple, 31... Clincher stand, 36... Axis (first axis), 41...
... Driver arm drive shaft, 43 ... Side wall, 44 ... Groove, 44a ... Straight groove, 4
4b...Arc-shaped groove.

Claims (1)

[Scope of utility model registration request] A clincher arm having a clincher stand for bending staples on one end side is provided with a bearing member spaced apart from the clincher stand, and a handle member is pivotally supported at a position of the bearing member near one end of the clincher arm. A magazine member having a pivot shaft and a second pivot shaft disposed near the other end of the clincher arm of the bearing member, a magazine member for loading staples onto the second pivot shaft, and a driver arm for driving staples from the magazine member. The driver arm is attached to a handle member via a driver arm drive shaft provided at a position apart from the first pivot, and the driver arm is driven by the handle member. A stapler characterized in that grooves are provided on the inner surface of the side wall of the handle member in which the first and second pivot shafts move relative to the handle member when the handle member is opened and closed relative to the clincher arm.