JPH08318475A - Stapler - Google Patents

Abstract

PURPOSE: To stably keep a leg part of a staple in a vertical state, and to bend the stable in parallel and flat in the mutually and slightly diagonal direction without interference of the leg part of the stable which is guided to a stable bending groove with each other by connecting right and left upper side plate provided on a frame to a supporting shaft mounted on a base end part of a handle. CONSTITUTION: In a relatively large stapler, a base 1, a paper receiving rear table 23, and a frame 42 are concentratedly connected by a main shaft 7, and a handle 47 is connected to a part of the frame 42 through a supporting shaft 49, and one supporting point by the main shaft is provided. When a staple is cut by the handle operation to achieve the stapling, the paper receiving rear table 23 is moved rearward in a same manner as a staple bending table 38 fitted to the frame 42 to keep the positional relationship of the paper bundle held between the frame 42 and the stable bending table 38 and the stable in an unchanged condition to constantly allow the staple to be correctly and smoothly bent.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a relatively large stapler.

[0002]

2. Description of the Related Art Many large staplers used for binding relatively thick sheets of paper employ a clincher mechanism that bends the legs of the binding needle after the binding needle penetrates the binding sheet. , Actual Kaihei 5-56363
The inventions such as No. 5, Jitsufairoku 5-46858, and Johfairoku 6-16664 are examples of the improved types.

The device of Japanese Utility Model Laid-Open No. 5-56363 holds the leg portion of the binding needle in the front-rear direction by means of the inclined surface, so that it hits a spot and cannot be held in a stable state.

According to the invention of Japanese Utility Model Publication No. 5-46858, the leg portion of the binding needle is bent by being guided twice by the first guide side wall and the second guide side wall. Contacts the two guide sidewalls, the resistance increases the spelling load, and the needle bend groove is connected at the center,
Depending on the material of the binding needle and the like, the degree of bending is not always constant, and the legs come into contact with each other, so that flat stitching cannot be performed.

In the invention of Japanese Utility Model Publication No. 6-16664, a pair of clincher members and cam members are installed, but the structure is complicated, many parts are required, many manufacturing processes are required, and the production cost is high. Was expensive. In addition, the plate-shaped guide member is installed diagonally, and the clincher member descends vertically while the clincher member rotates vertically with the front end as a fulcrum, and the frame rotates with the fulcrum as a fulcrum. Since the frame and the sheet bundle move with respect to the staple bending table, the binding needle cannot be pierced perpendicularly to the sheet bundle, and the end face of the sheet bundle is misaligned. Sometimes it happened.

[0006]

SUMMARY OF THE INVENTION Therefore, the present invention is intended to eliminate such a drawback, and the leg portion of the staple is held in a stable vertical state and guided in the needle curved groove. It aims to provide a stapler that can be bent flat and parallel to each other in a slightly oblique direction without the legs of the binding needles interfering with each other, while at the same time simplifying the structure and reducing the parts used, resulting in low production cost. It is intended to provide various products.

[0007]

According to the present invention, a main shaft is installed on both left and right side plates of a support frame installed at the base end of a base, and a needle cutting bit is provided at the front end of the main shaft inside the support frame. Connecting the rear side of the frame to the outside of the support frame and connecting the left and right standing plates of the rear end of the paper receiving rear stand to the outside of the support frame, and the left and right upper plates of the frame to the base end of the handle. Connected to the erected shaft, install a slider that moves back and forth on the base between the base and the rear tray of the paper receiver, and engage the rear end of the front tray of the paper receiver with the front left and right ends of the rear tray of the paper receiver. Connect and lock the projection provided at the front end of the paper receiving front stand with the long hole provided on the front end side wall of the base to hold the paper receiving back stand horizontally and the paper receiving front stand in a slightly inclined shape toward the front. Then, the guide plate erected on the rear end of one side wall of the slider is fitted into the opening of the paper receiving rear stand and protrudes. The lower end of the operating piece provided on the support shaft connecting the left and right base ends of the handle to the upper and left upper plates of the frame is brought into contact with and separated from the guide plate. Press the plate to move the slider backwards, releasing the left and right sides of the bending stand retainer placed on the front ends of both side walls of the slider, and the leg portions of the binding needles are slanted toward each other. It is configured to be bent parallel and flat.

[0008]

Before use, since the front end portion of the paper receiving rear tray provided with the needle bending base is in a horizontal state, a predetermined sheet of paper to be bound on the front upper surface of the paper receiving front tray and the front side of the paper receiving rear tray. The bundle is placed, and one end of the sheet bundle is positioned on the upper surface of the bending table retainer that accommodates the needle bending table. In this pre-use stage, the lower end of the operating piece on the support shaft of the base end of the handle is inserted into the L-shaped opening of the rear tray of the paper receiving tray from between the frames.
It is in contact with the upper inside of the shape guide plate (see Fig. 2).

Therefore, first, when the handle is strongly pressed,
The frame descends around the spindle while compressing the bullet at the rear end, and the front end of the frame holds down the sheet bundle (Fig. 3).
reference).

Further, when the handle is pressed down hard, the handle moves a little horizontally from the inclined position with the support shaft as a fulcrum while compressing the bullet inside the handle. Then
The pivot on the handle moves from the front end to the rear end of the slot,
The needle cutting tool attached to the guide in the front frame lowers and cuts off the first one of the binding bundle, but at this time, the leg portion of the binding needle is restricted in the left-right direction by the front protrusion of the front end of the guide rail. In addition, the frame and the guide rail are lowered in the vertical direction while being restricted in the front-rear direction by the side projections (see FIGS. 6 and 7).

The operating state after the leg portion a'of the binding needle a has been cut off is shown in detail in FIGS. 14 to 17.

Next, when the handle is further pressed, the binding needle starts to pierce the sheet bundle, and at the same time, the arcuate lower end of the operating piece comes into contact with the inner side of the vertical L-shaped guide plate and presses it backward. , The slider will move backward (see FIGS. 4, 8 and 9).

Further, when the handle is lowered and the tip of the upper end portion of the binding needle reaches the outer surface of the front projection of the front end portion of the guide rail, the guide rail retracts by one binding needle and only the upper end portion of the binding needle. Is regulated, and the leg portion of the staple that has been regulated by the front protrusion and the side protrusion around the front frame and the front end of the guide rail has been released, and the leg portion of the staple has left and right needle bends. Since the groove surface is pushed, the needle bending table moves down, the tip of the elastic plate that was in contact with the concave groove between the left and right legs of the needle bending table also moves down, and the upper end of the binding needle moves to the front frame. At the same time, when the binding plate is pushed out from the front protruding part of the body and the guide rail, the binding needle completely pierces the stack of paper, and at the same time, the push plate of the bending plate restraining body placed on the upper surface of the front end of the slider is released. Since the table after receiving the paper that is screwed to the table holder is also released, the needle bending table is pressed by the press of the needle cutting tool. Beauty longitudinal both papers cradle moves downward, the tip of the tip and the secondary power spring plate power spring plate in a compressed state (refer to FIG. 5 and 9).

At the same time, the left and right leg portions of the binding needle are bent from both the left and right sides of the needle bending groove on the upper surface of the needle bending table along the intermediate diagonal line portion on the needle bending groove so as to be bent obliquely to each other in a flat shape. (See FIGS. 10 and 23).

In this state, both the paper receiving rear table and the paper receiving front table are slightly inclined in the direction of the central bending table.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 1 is a base having side walls 2 formed on its periphery. Side plates 3 and 3 are provided on both left and right sides and openings 4 and 4 are provided on both front and rear sides on a base end of the base. The supporting frame body 5 is installed. An extension bullet 6 is interposed between the support frame 5 and the lower surface of the frame 42, which will be described later.

Reference numeral 7 denotes a main shaft which is installed in through holes 8 provided in the left and right side plates 3 and 3 of the support frame 5, and the main shaft has upper ends of standing plates 24 and 24 at the rear end of the paper receiving rear table 23. The through holes 25, 25 provided in the above and the through holes 44, 44 provided in the lower rear portion of the frame 42 are inserted.

Reference numeral 9 denotes a cut-and-raised piece which is vertically provided close to the front side portion of the support frame 5 of the base 1, and the cut-and-raised piece has an opening portion provided at the rear side portion of the slider 17 described later. 20 engages.

Reference numeral 10 denotes a hooking piece provided by being cut and raised from the cut-and-raised piece 9 of the base 1 at a distance, and this hooking piece is a long opening 22 provided on a rear side portion of a slider 17 described later. Was installed in the
Further, the hooking piece 10 is provided with a rear opening 20 of a slider 17 described later.
The ammunition machine 11 is interposed between the hooking piece 21 and the hooking piece 21 provided adjacent to the armor.

Reference numerals 12 and 12 denote inverted L-shaped hooking pieces provided by cutting and raising on the base 1, and these hooking pieces are the paper receiving rear table 23 described later.
Engage with the vertically elongated openings 28, 28 provided on the left and right front sides of the.

Reference numeral 13 is an inverted L-shaped hooking piece 12, 1 of the base 1.
2 is a strip plate provided with the base end fixed to the base on the front side portion between the two and the tip is raised inward.
The concave groove portion 41 on the bottom surface of the needle bending table 38 is brought into contact with the upper portion.

Numerals 15 and 15 are sub-stretch plates which are provided on both the left and right sides of the strip plate 13 with their leading end portions raised inward, and the leading end portions of these sub-stretching plates are the paper receiving rear table 23 described later.
Of the front side plates 27, 27.

Numerals 16 and 16 are elongated holes provided at both left and right end portions of the front side portion of the side wall 2 of the base 1. The elongated holes are provided at both left and right end portions of the front side portion of the paper receiving front stand 30 described later. Protrusion 32,
32 engages.

Reference numeral 17 denotes a slider which operates in the forward and backward directions. The slider has side walls 18 and 18 'formed at both left and right ends thereof, and a guide plate 19 which is vertically bent in a plane L shape at the rear end of one side wall 18'. This guide plate is fitted into the plane L-shaped opening 26 provided in the post-paper receiving stand 23 described later.

Reference numeral 20 denotes an opening provided on the rear side of the slider 17, and the cut-and-raised piece 9 of the base 1 is engaged with this opening.

Reference numeral 21 denotes the rear opening 2 of the slider 17.
0 is provided next to the hook, and the ammunition machine 11 is interposed between the hook piece and the hook piece 10 of the base 1. It is installed in the long opening 22 provided on the side.

Reference numeral 23 denotes a paper receiving rear base installed on the upper rear side of the base 1, and standing plates 24, 24 are formed at the rear end of the paper receiving rear base at intervals, and the upper ends of the vertical plates are formed. The parts are provided with through holes 25, 25, and the main shaft 7 is inserted into the through holes.

Reference numeral 26 is a plane L-shaped opening provided on the upper surface of the paper receiving rear stand 23, and the L-shaped guide plate 19 of the slider 17 is fitted into this opening.

Reference numerals 27 and 27 denote front side plates provided on both left and right sides of the front end portion of the paper receiving rear stand 23. The front side plates are provided with vertically elongated openings 28, 28 and the notch 2 is formed at the inner edge thereof.
9 and 29 are provided.

Reference numeral 30 denotes a paper receiving front base installed on the upper front side of the base 1 in front of the paper receiving rear base 23.
Planar L-shaped projections 31 and 31 are provided on the left and right sides of the center of the rear end of the paper receiving front stand, and these projections are cutouts 29 and 29 provided in the front side plates 27 and 27 of the paper receiving back stand 23. To connect the front and rear paper trays 23 and 30. The plane heights of both paper receiving trays have no steps, and the paper receiving trays are horizontal and the paper receiving trays are slightly inclined forward.

Protrusions 32, 32 are provided at both left and right ends of the front side of the paper receiving front base 30, and the long holes 16, 16 of the base side wall 2 are engaged with the protrusions 32, 32.

Reference numeral 33 denotes a bending table restraining member which is fitted to a concave surface portion 34 formed on the upper surface of the front side of the paper receiving rear table 23 and fixed by a screw 35 and interposed between the left and right front side plates 27, 27. A needle bending table 38 described later is fitted into the front space portion 36 of the bending table restraining body.

Denoted at 37 and 37 are push plates provided on the left and right sides of the front side of the bending table restraining body 33. The push plates are placed on the upper front end portions of the left and right side walls 18 and 18 'of the slider 17. Becomes

Reference numeral 38 denotes a needle bending table fitted in the front space 36 of the bending table restraining body 33. The inner side surfaces of the left and right needle bending grooves 39, 39 provided on the upper surface of the needle bending table are diagonal to each other. Part 39 '
At the boundary, a step is formed between the left and right needle curved grooves. Further, the widths and the depths of both needle curved grooves 39, 39 are gradually narrowed and gradually shallowed from one end portion to the other end portion, and these needle curved grooves are each arcuate in side view (FIGS. 19, 20). reference).

Legs 40, 40 are provided on the left and right sides of the bottom surface of the needle bending table 38, and a concave groove portion 41 is provided in the middle thereof.
The concave groove portion comes into contact with the tip end portion 14 of the rib plate 13 on the base 1.

Reference numeral 42 denotes a frame in which a needle cutting bite 43 is arranged on the inner side of a front frame 59, which will be described later. The main shaft 7 is inserted between the through holes 44 formed in the lower portion of the base end of the frame. Become.

Reference numerals 45, 45 denote upper plates formed on both left and right sides of the center of the upper surface of the frame 42. A support shaft 49, which will be described later, is inserted into the through holes 46, 46 formed in the upper plate.

Reference numeral 47 denotes a handle, and a support shaft 49 is inserted into through holes 48, 48 provided at both left and right sides of a base end portion of the handle, and the support shaft 49 passes through the through holes 46, 4 of the frame 42.
Insert through 6 and connect.

Reference numeral 50 denotes an operating piece having an upper rear portion fixedly attached to a support shaft 49 of the handle 47, and the arcuate lower end 5 of the operating piece.
1 is adapted to come into contact with and separate from the inner side surface of the vertical L-shaped guide plate 19 of the slider 17.

Reference numeral 52 is a protrusion provided on the front side of the upper end of the operating piece 50 by bending, and the protrusion is fitted into an opening 53 provided in a part near the base end of the handle.

Reference numeral 54 designates a stopper which is formed by cutting and raising the upper surface of the handle 47 near the base end thereof, and between the stopper and the rear side position of the needle cutting tool 43 of the frame 42, an ammunition 55 is provided. Intervene.

Reference numerals 56 and 56 denote the stoppers 5 of the handle 47.
4, diagonal holes provided on the left and right side plates on the slightly front side, and between the diagonal holes, through holes 57 provided on the left and right sides of the upper end of the guide 61 provided inside the front frame 59 of the frame 42, 57
Is located, and a pivot 58 is installed between them.

Reference numeral 59 denotes a front frame member provided at the front end portion of the frame 42, and a fixing pin 60 is provided between upper portions of the front end portion of the front frame member.
A guide 61 having the needle cutting bite 43 attached to the front side is vertically moved along the fixing pin.

Reference numerals 62 and 62 denote guide rails of a bundle of staples provided in the longitudinal direction of the base portion of the frame 42. The front end surfaces of the guide rails have upper vertical portions 63 and 63 and lower front protruding portions 64. It consists of 64. Further, the front left and right ends of the guide rails 62, 62 respectively form protrusions 65, 65 that are inclined outward, and the outer protrusions are rearward of the front protrusions 64, 64 of the front end face portions. It comes to be located on the side.

Reference numeral a is a binding needle, and this binding needle bundle is always pressed in the forward direction via the ammunition machine. a'refers to the leg of the binding needle.

[0046]

First, in a relatively large stapler, the base portion, the paper receiving rear stand, and the frame are centrally connected by one main shaft, and the handle is connected to a part of the frame through a support shaft. Since the fulcrum of the main shaft is one, when the staple is cut off by the handle operation to staple the staples, the frame and the needle bending stand attached to the paper receiving tray are the same. Since the sheet is moved rearward, the positional relationship between the bundle of sheets and the staples sandwiched between the frame and the staple bending table is maintained, and the staples can always be bent accurately and smoothly.

Secondly, even in the case of a relatively large stapler, the leg portion of the binding needle is reliably guided in the vertical direction by the regulation processing from the periphery to the leg portion of the cut-out binding needle at the front end portion of the guide rail. You will surely be able to bend.

Thirdly, the inner surfaces of the left and right needle bending grooves on the needle bending table have a step at a diagonal line from each other, and the width of the needle bending groove is narrow and arcuate from the end to the center, and Since the edges of the binding needle are deep at the ends and shallow toward the center, the leg portions of the binding needle regulated in the vertical direction are bent so that the tips of the leg portions do not contact with each other while being guided by the diagonal line portion, Even if the staple is long and the legs of the staple are long, the tip of the leg never breaks through the bundle of sheets from the back side and goes out to the front side at all, and it always shows a beautiful flat staple state. .

Fourth, since the structure is simple and has a relatively small number of parts and a small number of assembling steps, the manufacturing cost thereof can be made relatively low.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire separated state.

FIG. 2 is a side view of a partial cutout before use.

FIG. 3 is a side view of a partial cutout showing an operation during use.

FIG. 4 is a side view of an entire partial cutaway showing one action during use.

FIG. 5 is a side view of a partial cutaway showing one action during use.

FIG. 6 is a sectional view taken along the line AA of FIG.

FIG. 7 is a sectional view taken along the line BB of FIG.

FIG. 8 is a sectional view taken along line C-C in FIG.

FIG. 9 is a sectional view taken along line D-D of FIG.

FIG. 10 is a sectional view taken along line EE of FIG.

FIG. 11 is a cutaway perspective view of essential parts.

FIG. 12 is a side sectional view of a main part during operation.

FIG. 13 is a front view of the main part during operation of FIG.

FIG. 14 is a side cross-sectional view of the main part during operation.

FIG. 15 is a front view of the main part during operation of FIG.

FIG. 16 is a side sectional view of an essential part during operation.

FIG. 17 is a front view of the main part during operation of FIG.

FIG. 18 is a bottom view of FIG. 12 as viewed from F.

FIG. 19 is a front view of the main part.

20 is a plan view of the main part of FIG.

FIG. 21 is a sectional view taken along line 20G-G of FIG.

FIG. 22 is a cross-sectional view taken along the line HH of FIG.

FIG. 23 is a plan view showing a bent state of a staple leg portion according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 4,4 Opening 5 Support frame 6 Stretching ammunition machine 7 Main shaft 11 Ammunition machine 13 Stroke plate 15,15 Sub-stretch plate 16,16 Long hole 17 Slider 18,18 'Side wall 19 L-shaped guide plate 23 Paper receiver Rear stand 24, 24 Stand plate 26 L-shaped opening 27, 27 Front side plate 28, 28 Longitudinal opening 29, 29 Notch opening 30 Paper receiving front stand 31, 31 L-shaped protrusion 32, 32 Protrusion 33 Bending base restraint 36 Front space 37, 37 Pushing plate 38 Needle bending table 39 Needle bending groove 39 'Diagonal line portion 40, 40 Leg portion 41 Intermediate concave groove portion 42 Frame 43 Needle cutting bite 45, 45 Upper plate 47 Handle 49 Spindle 50 Working piece 55 Ammunition 58 Axis 59 Front Frame 60 Fixing Pin 61 Guide 62, 62 Guide Rail 64, 64 Front Projection 65, 65 Side Projection

Claims (5)

[Claims] 1. A rear side of a frame in which a main shaft is installed on both left and right side plates of a support frame installed at a base end of a base, and a needle cutting bit is provided at a front end of the main shaft on the inside of the support frame. The left and right standing plates at the rear end of the paper receiving rear stand are connected to the outside of the support frame, and the left and right upper plates provided on the frame are connected to the support shaft installed at the base end of the handle. Consisting of stapler. 2. The left and right base end portions of the handle are connected by a support shaft between the left and right upper side plates of the frame, and the upper end portions of the needle cutting bit provided on the front inner side portion of the front frame of the frame are connected to both side plates of the handle. The front projection of the guide rail installed inside the frame is connected to the front of the guide rail installed inside the frame by a pivotal portion that restricts the inward fall of the leg portion of the staple. A stapler provided with side projections for holding the leg portion of the binding needle in a vertical state until just before the upper end of the binding needle reaches the front surface of the front protrusion. 3. A bending table restraining body in which a needle bending table is fitted and inserted in a front end surface portion of a paper receiving rear table, in which a rear end portion is erected and connected between left and right side plates of a supporting frame body installed at a base end portion of the base table, The upper and lower portions of the needle bending table are provided with left and right needle bending grooves that are diagonally divided into two diagonally inclined steps and the lower end portion of the needle bending table is provided with a tip end of a spring plate provided on the base. Abutting, the tip of the left and right ridges adjacent to this ridge is abutted on the lower surface of the front side plate of the paper receiving rear stand, so that the legs of the staples are bent in parallel to each other in a slightly diagonal direction Made stapler. 4. The stapler according to claim 3, wherein both the width and the depth of the left and right needle curved grooves are gradually narrowed and shallowed from one end to the other end. 5. A rear side of a frame in which a main shaft is installed on both left and right side plates of a support frame installed at a base end of a base, and a needle cutting bit is provided at a front end inside the support frame on the main shaft. The left and right standing plates of the rear end of the paper receiving rear stand to the outside of the support frame, and the left and right upper plates provided on the frame are connected to a support shaft installed at the base end of the handle, A slider that moves back and forth on the base is installed between the base and the rear tray of the paper tray, and the rear end of the front tray of the paper tray is engaged and connected to the front left and right edges of the rear tray of the paper tray. A protrusion provided at the front end of the paper receiving front stand is locked in a long hole provided on the side wall to hold the paper receiving back stand horizontally and the paper receiving front stand in a slightly inclined shape toward the front, and one side wall of the slider. The guide plate erected at the rear end is fitted into the opening of the paper receiving rear stand and protrudes. The lower end of the operating piece provided on the support shaft that connects the left and right base ends to the left and right upper side plates of the frame is contacted and separated, and the lower end of the operating piece presses the guide plate to operate the slider when the handle is pressed down. Moves backward, thereby releasing both left and right sides of the bending table restraining body placed on the front ends of both side walls of the slider, and the leg portions of the binding needle bend parallel to each other in a slightly oblique direction and flatly bend. Made stapler.