JP7154597B2 - stapler - Google Patents

Description

The present invention relates to staplers. More specifically, the present invention relates to a stapler capable of preventing blank firing of staples by instinctively informing the operator that the amount of staples remaining in the stapler is low.

A stapler is widely used as a tool for easily binding various paper documents. The basic structure of this stapler consists of a handle portion, a base portion, a magazine portion in which a large number of loosely joined staples are loaded, and a driver portion having projections for driving out the staples loaded in the magazine portion. , and are rotatably attached at their rear ends.

By the way, in the conventional stapler, when all the staples filled in the magazine are used up, there is no means for notifying the operator of this state. Therefore, when the operator attempts to operate the stapler to drive out staples, he/she first notices that there are no staples to be driven out due to a so-called blank firing state.

When working with a stapler, the paper documents to be bound must be aligned as a pre-work, and it is expected that the worker will concentrate on the alignment work. Then, if the stapler hits blank after such work is done, the binding work is temporarily interrupted to replenish the stapler to the stapler, and then the paper documents are aligned again and the stapler is turned off. Since it is necessary to operate the machine, the work becomes inefficient, and the operator feels psychologically disappointed and exhausted after the work, which requires concentration.

In order to address the above problems, for example, Patent Document 1 discloses that the staple positioned at the end of a series of loosely joined staples is colored in a color different from that of the other staples to give a different appearance. A staple is disclosed. According to Patent Document 1, an operator can easily determine whether or not the staple that has been driven out is the last one by checking the color of the driven staple. .

Further, in Japanese Patent Application Laid-Open No. 2002-100001, the remaining amount of staples is indicated by an LED, and when the remaining amount of staples reaches a predetermined amount, the lighting pattern of the LEDs is changed, so that the operator can be notified of the remaining amount of staples. A stapler is disclosed that notifies the user that the stapler is running low.

JP-A-7-310716 JP 2012-152886 A

However, with the staples disclosed in Patent Document 1, when the stapler is replenished with staples, it is necessary to always place the colored staples at the tail end, which may complicate the replenishment operation. In addition, after working with the stapler, the worker always needs to check the color of the staples that have been punched out. The need to confirm this hindered work efficiency.

In addition, even with the stapler according to Patent Document 2, the operator must always pay attention to the LED display while performing the work. The operator does not operate the stapler while looking at the vicinity of the operator's hand, and there is a risk that the operator may tend to overlook the LED display. Furthermore, the LED display requires a driving power supply and wiring, complicating the mechanism of the stapler itself and making it impractical.

SUMMARY OF THE INVENTION The present invention has been devised in view of the above points. An object of the present invention is to provide a stapler capable of preventing the

In order to achieve the above object, the stapler according to the present invention comprises a handle portion having a through hole formed at a predetermined position, a receiving portion having a concave groove for receiving the staple, and a front end of the receiving portion. a fitting recess formed opening in the same direction as the opening direction of the recessed groove for driving out the staples toward the binding paper; a base portion having a clincher for bending the leg portion of the staple driven out from the ejection port; and directing the staple stored in the storage portion toward the ejection port. a driver portion having a driving piece that is driven out by pressing, a main body portion, a fitting convex portion that can be fitted into the fitting concave portion when the pusher is at a predetermined position at one end of the main body portion, and the other end of the main body portion. (2) a remaining amount of staples display mechanism having a protrusion part of which can protrude toward the through hole in a state where the fitting protrusion is fitted in the fitting recess.

Here, by providing a handle portion having a through hole formed at a predetermined position, as will be described later, it is possible to project a part of the protrusion of the remaining staple amount display mechanism from the through hole. Therefore, when the worker grips the handle portion and works, the remaining amount of staples can be intuitively sensed by the presence or absence of the projection portion.

In addition, when the magazine section has an accommodating portion formed with grooves for accommodating the staples, the grooves can be filled with the staples.

In addition, when the front end of the accommodating portion is formed with an ejection opening for driving out the staples toward the sheets to be bound, the staples can be sequentially driven out from the ejection opening toward the sheets to be bound.

In addition, when the magazine section has a pusher that presses the staples stored in the storage section toward the ejection opening, the staples stored in the storage section can be sequentially fed out toward the ejection opening by the pusher.

Further, when the pusher includes fitting recesses formed in the same direction as the opening direction of the recessed grooves, as will be described later, when the remaining amount of staples becomes less than a predetermined amount, the remaining amount of staples is The fitting convex portion of the mechanism can be fitted into the fitting concave portion, and the protrusion can be protruded from the handle portion by the recoil.

Further, the main body portion, the fitting convex portion at one end of the main body portion that can be fitted into the fitting concave portion when the pusher reaches a predetermined position, and the fitting convex portion at the other end of the main body portion that fits into the fitting concave portion. By providing a staple remaining amount display mechanism having a protrusion that can partially protrude toward the through hole in the combined state, the fitting convex portion is replaced by the fitting concave portion when the remaining amount of staples becomes less than a predetermined amount. Since the protruding portion can protrude from the through-hole of the handle portion due to the recoil caused by being fitted into the handle portion, the operator can be sensuously notified that the remaining amount of staples is small. .

In addition, the protrusion is always biased by the biasing member toward the staple driving direction. In the case where the protruding portion is configured to protrude from the through hole, the protruding portion is urged by the urging member when there is a sufficient amount of staples remaining, so that the protruding portion is prevented from inadvertently protruding from the through hole. can be prevented.

On the other hand, when the remaining amount of staples becomes less than a predetermined amount and the pusher moves to a predetermined position, the fitting convex portion is fitted into the fitting recess portion. By the action of , the projection can be projected from the through hole.

Further, if the fitting convex portion is fitted into the fitting concave portion when the last staple housed in the housing portion is driven out by the driver portion, when the remaining amount of staples becomes zero, The fitting projection can be fitted into the fitting recess, and the projection can be projected from the through hole of the handle. That is, when the operator grips the handle portion when starting the next operation, the operator can sense that the protrusion protruding from the through hole feels uncomfortable, and can grasp that the staples in the accommodating portion have run out. It is possible to prevent blank firing of staples in the work of .

A long hole is formed in the other end of the main body of the remaining staple amount display mechanism, and when the projection is slidably pivotally supported along the long hole, the movable range of the projection can be widened. Also, the movement of the projection when the fitting projection is fitted into the fitting recess is smoother.

Further, when the substantially central portion in the longitudinal direction of the main body of the remaining staple amount display mechanism is pivotally supported at a predetermined position of the driver, the main body can be held more stably.

The stapler according to the present invention can prevent blank firing of staples by sensuously notifying the operator that the amount of staples remaining in the stapler is low. .

It is an exploded perspective view of a stapler concerning an embodiment to which the present invention is applied. 1 is a completed perspective view of a stapler according to an embodiment to which the present invention is applied; FIG. 1 is a partially broken side view of a stapler according to an embodiment to which the present invention is applied, where (a) is a plan view and shows a state in which staples are reduced in order from (b) to (f).

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings for understanding of the present invention. In the following description, the front-rear direction is defined as the front side of the punching port 41 for driving out the staple S, and the rear side of each member on the rotating shaft side. Further, the vertical direction is defined as the handle portion 2 side being upward and the base portion 5 side being downward when the base portion 5 of the stapler 1 is installed on the mounting surface.

First, the overall configuration of a stapler 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. The stapler 1 is mainly used as a stationery for binding paper, and includes a handle portion 2, a driver portion 3, a magazine portion 4, and a base portion 5. Between the handle portion 2 and the driver portion 3, there is a remaining amount of staples. It has mechanism 6 . Among them, the handle portion 2 and the base portion 5 are integrally mounted on the rear end side through a rotation shaft 54, and each member can rotate independently around the rotation shaft 54. .

Here, the stapler 1 does not necessarily have to consist of the handle portion 2, the driver portion 3, the magazine portion 4, and the base portion 5 as the main components. The configuration of the stapler 1 may include other components.

The handle portion 2 is a portion that is gripped mainly by the thumb of the worker's dominant hand to apply force vertically downward when the worker uses the stapler 1 to drive the staples S into the binding paper. A through-hole 21 having a size that allows a part of a projecting portion 63 to be described later to protrude is formed at the front side along the predetermined longitudinal direction of the portion 2 and at substantially the central portion in the lateral direction. there is

Here, the position of the through hole 21 formed on the handle portion 2 does not necessarily have to be the position described above. The position of the through-hole 21 can be appropriately changed so that the stapler 1 is generally gripped by the thumb when the operator works with the stapler 1 .

The driver unit 3 has a function of, for example, driving out staples S to binding sheets to be bound. At the front end of the driver portion 3, a substantially rectangular plate-like driving piece 31 for driving the staple S from the punching port 41 toward the binding paper projects downward.

Here, the embossed piece 31 does not necessarily have to be in the shape of a substantially rectangular plate. The shape of the punching piece 31 may be any shape as long as the staple S can be punched onto the binding paper.

The magazine section 4 mainly has a function of loading the staples S therein. At the front end of the magazine section 4, a punching opening 41 is formed through which the punching piece 31 can pass and for sequentially punching out the staples S onto the binding papers.

From the front to the rear of the magazine section 4, there is provided a storage section 42 for storing staples S therein. The accommodating portion 42 is formed with an upward concave groove having a width substantially matching the width direction of the staple S, and a plurality of connected staples S bundled together in the concave groove are formed into one lump. It can be accommodated as

Further, the magazine section 4 has a pusher 43 for sequentially pushing out the staples S accommodated in the accommodating section 42 toward the ejection port 41 . The front surface of the pusher 43 abuts on the rearmost staple S among the staples S accommodated in the accommodating portion 42 . In addition, the rear surface side is always urged forward through the urging member 44 and is attached so as to be slidable in the housing portion 42 . Further, on the upper surface of the pusher 43, a fitting concave portion 45 is formed so as to open upward, into which a fitting convex portion 62, which is a part of the remaining staple amount display mechanism 6 described later, can be fitted.

Here, the fitting recess 45 does not necessarily have to be formed at the position shown in FIG. The fitting recess 45 may be formed at any position on the pusher 43 as long as it is formed upward.

The base portion 5 is composed of a substantially rectangular bottom portion 51 and side wall portions 52 . The front side of the bottom surface portion 51 has a clincher 53 formed with a depression for bending the leg portion of the staple S driven out from the punching port 41 . The side wall portions 52 are erected so as to face each other vertically upward, and the rear end of the side wall portions 52 has a rotation shaft 54 through which a shaft pin 55 is inserted. is independently rotatable with a pivot shaft 54 as a base end.

Next, the staple remaining amount display mechanism 6 according to the embodiment of the present invention will be described. The staple remaining amount display mechanism 6 is mainly composed of a body portion 61 , a fitting convex portion 62 , and a projection portion 63 . It is pivotally supported so as to be rotatable.

Here, the staple remaining amount display mechanism 6 does not necessarily have to be supported by the driver portion 3 . However, since the body portion 61 is pivotally supported by the driver portion 3, the body portion 61 can be held more stably.

As described above, the main body portion 61 has a through hole 68 in the substantially central portion thereof into which the shaft pin 64 can be inserted. freely pivoted.

At one end of the body portion 61 is formed a fitting protrusion 62 that can be fitted into the fitting recess 45 formed on the pusher 43 . An elongated hole 65 having a predetermined length is formed in the other end of the body portion 61, and a protrusion is provided via a shaft pin 69 so as to be slidable and rotatable within the elongated hole 65. A portion 63 is journalled.

Here, the fitting protrusion 62 does not necessarily have to be integrally formed on one end side of the main body 61 as a part of the main body 61 . For example, the fitting convex portion 62 may be prepared separately, and one end of the fitting convex portion 62 and the main body portion 61 may be fixed by a known fixing means.

Further, it is not always necessary to form the long hole 65 at the other end of the body portion 61 . However, since a predetermined clearance can be ensured by forming the elongated hole 65, the rotational movement of the protrusion 63 can be made smoother.

The protrusion 63 is always urged downward by an urging member 66 . A support leg 67 fixed to the protrusion 63 is inserted through the biasing member 66 , and the tip of the support leg 67 is supported through a through hole 32 formed at a predetermined position in the driver section 3 .

In the above configuration, the functions of the staple remaining amount display mechanism 6 will be described with reference to FIGS. 3(a) to 3(f).

First, FIGS. 3(a) and 3(b) show the state of the staple remaining amount display mechanism 6 when there is a sufficient amount of staples S remaining in the storage section 42 of the magazine section 4. FIG. When there is a sufficient amount of staple S remaining, the fitting projection 62 is placed on the staple S, and at this time the projection 63 is urged toward the driver portion 3 by the urging member 66 . state is maintained.

When the staple S continues to be used from the state of FIG. 3B, the pusher 43 moves forward accordingly. At this time, as shown in FIG. 3C, the relative distance between the fitting projection 62 and the pusher 43 is shortened, and the fitting projection 62 abuts near the front of the pusher 43 .

When the staples M in the containing portion 42 are further used and the remaining amount of the staples M reaches a predetermined number (five in the figure), the pusher 43 is further contained as shown in FIG. 3(d). The fitting projection 62 is fitted into the fitting recess 45 at this time.

When the fitting projection 62 fits into the fitting recess 45 of the pusher 43 , an upward force, which is opposite to the urging direction of the urging member 66 , acts on the projection 63 due to its reaction. At this time, the projecting portion 63 moves upward against the biasing force of the biasing member 66 and partially protrudes from the through hole 66 .

In a state in which a part of the protrusion 63 protrudes from the through hole 21, when the operator grasps the handle portion 2 and tries to operate the stapler 1 to start the next work, the protrusion 63 is felt. perceived as incongruity. As a result, the operator can intuitively grasp that the remaining number of staples S has decreased, and can be motivated to replenish the staples S in the storage section 42 .

When the operation is continued further and the staples S in the accommodating portion 42 are exhausted, as shown in FIG. Since it feels uncomfortable, the worker can be strongly urged to replenish the staples.

Here, it is not always necessary to bring the fitting convex portion 62 and the fitting concave portion 45 into the fitted state when the remaining number of staples S in the accommodating portion 42 becomes very small. For example, when the staple S is completely exhausted, the fitting protrusion 62 and the fitting recess 45 are in a fitted state, and the protrusion 63 may protrude from the through hole 21 .

In this way, the operator can be notified not only visually but also sensuously that the number of remaining staples has run out (or that the number of remaining staples has decreased). It is possible to greatly reduce the chances of overlooking that the number has disappeared (or that the number has decreased).

As described above, the stapler according to the present invention is capable of preventing blank firing of staples by instinctively informing the operator that the amount of staples remaining in the stapler is low. ing.

REFERENCE SIGNS LIST 1 stapler 2 handle 21 through hole 3 driver 31 ejection piece 32 through hole 4 magazine 41 ejection opening 42 housing 43 pusher 44 biasing member 45 fitting recess 5 base 51 bottom 52 side wall 53 clincher 54 rotation Shaft 55 Shaft pin 6 Staple remaining amount display mechanism 61 Main body 62 Fitting projection 63 Protrusion 64 Shaft pin 65 Long hole 66 Biasing member 67 Support leg 68 Through hole 69 Shaft pin S Staple

Claims (5)

a handle portion having a through hole formed at a predetermined position;
A containing portion formed with a groove for containing the staple, an ejection port formed at the front end of the containing portion for driving out the staple toward the binding paper, and facing in substantially the same direction as the opening direction of the groove. a magazine section having a pusher that includes a fitting recess formed with an opening and presses the staple accommodated in the accommodation section toward the punch opening;
a base portion having a clincher that bends and forms the leg portion of the staple that is driven out from the punching port;
a driver section having a driving piece for driving the staple housed in the housing section toward the driving opening;
a main body portion, a fitting convex portion that can be fitted into the fitting concave portion when the pusher is at a predetermined position at one end of the main body portion, and the fitting convex portion that is fitted at the other end of the main body portion; a staple remaining amount display mechanism having a projection part of which can protrude toward the through hole in a state of being fitted in the recess. The protrusion is always urged by an urging member in a substantially staple driving direction,
2. The stapler according to claim 1, wherein, when said fitting protrusion is fitted into said fitting recess, said fitting protrusion protrudes from said through hole against the biasing force of said biasing member. 3. The stapler according to claim 1, wherein the fitting convex portion fits into the fitting concave portion when the last staple accommodated in the accommodating portion is driven out by the driver portion. A long hole is formed in the other end of the body portion of the remaining staple amount display mechanism,
4. The stapler according to any one of claims 1 to 3, wherein the protruding portion is slidably supported along the elongated hole. 5. The stapler according to any one of claims 1 to 4, wherein a substantially longitudinal central portion of the main body portion of the remaining staple amount display mechanism is pivotally supported at a predetermined position of the driver portion.

Images