JPH0111427Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a staple guiding device in the staple driving section of a stapler used particularly for simple bookbinding, thick binding, etc.

(Prior art) This type of stapler, which has traditionally been used for simple bookbinding and thick binding, has a method of separating the connected staples as a means of making it more durable to meet the intended use. It has been considered that only the tip of the staple guide could be hardened by heat treatment to harden only the tip.
This local hardening process causes local deformation in the staple guide that is difficult to correct, and is predicted to cause problems in that the staple feeding operation will become unsmooth during use. From this point on, the overall hardening process was carried out.

By the way, even if heat treatment is applied to the entire staple guide to harden it as described above, repair work is somewhat easier than when heat treatment is applied locally, but the staple guide Similarly, deviations and deformations in size and shape occur and correction processing is required during the stapler assembly process, and disassembly and assembly are time-consuming.
The drawback is that it is not only expensive, but also tends to result in parts with poor compatibility.

On the other hand, staples used for simple book binding or thick binding have relatively long legs, so when driving the staples, the resistance is large and the staples often buckle. There was an inconvenience.

(Problems to be Solved by the Invention) In view of the above-mentioned difficulties, shortcomings, and inconveniences, the present invention provides a hardening treatment for the staple guide that causes it to become distorted or deformed in its dimensions and shape. It is an object of the present invention to provide a staple guide device that can maintain the original precision of manufacture and at the same time prevent buckling of staples when driving staples.

(Means for Solving the Problems) In order to achieve the above-mentioned purpose, the staple guiding device of the stapler according to the present invention is arranged in a magazine having a shaped cross-sectional shape with a staple delivery gap in between. The front end of the staple guide is attached to the front end of the staple guide, which is made of an elastic hard material and covers the upper surface of the front end of the staple guide, and is attached to the front end of the staple guide so as to be able to return in the direction of the staple driving groove by a biasing spring. a vertical claw piece that separately covers the front edge surfaces of both sides of the staple guide from the front edge of the staple support plate, both corners of the upper surface of which are formed at substantially right angles in plan view and side view; A staple receiving metal fitting is installed between the vertical claw pieces on both sides, and an elastic claw piece that is inclined slightly forward than these nail pieces hangs down in a fork shape, and the vertical claw pieces of the staple receiving metal fitting are attached. and an elastic claw protrude into a staple driving groove formed on the inner surface of a magazine cover attached to the front end of the magazine.

(Function) As described above, the staple guide device of the present invention in the staple driving part of a stapler used for simple bookbinding, thick binding, etc. A staple receiving metal fitting made of an elastic hard material is attached to the front end of the staple guide on which the staples are slidably contacted.The upper surface of the front end is covered with a staple support plate, and the front edge surface is covered with a vertical claw piece. Therefore, unlike the staple guides of conventional staplers of this kind, the staple guides are susceptible to damage and wear even if the staple guides themselves are not hardened by heat treatment, which causes slight deviations and deformations in size and shape. Since a staple guide with the desired dimensions and shape can be obtained without any problems, a compatible staple guide can be obtained, and both corners of the upper surface of the front edge of the staple support plate of the staple receiving fitting are flat. Since it is formed at a substantially right angle both in view and side view, the staple at the front end can be smoothly removed.

Furthermore, although the staple guide retreats during the staple driving process, the elastic claws of the staple receiving fitting elastically abut and slide against the lower surface of the horizontal portion between the legs of the staple until the staple is driven and separated. This will guide the staples so as not to buckle them.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

First, the stapler incorporating the staple guide device of the present invention is a conventional stapler equipped with a clincher, a gauge, etc. as is well known, as shown in FIG. Base 1 similar to the previous one, and base 1 similar to the conventional one.
A side frame 2 is fixed on the top and is equipped with pivot pins 3 and 4, a compression spring 5, a stopper pin 6 for regulating the upward movement position of the magazine, etc., which will be explained later. As before, a handle 7 is rotatably mounted on a pivot pin 3 mounted on the upper part of the front end of the side frame 2, and a driver 15 and a compression spring 17 (second ) etc. are attached to the handle 7 via the interlocking pin 14 at the upper end.
A plunger 10 is connected to the plunger 10 and is moved up and down by the handle 7, and a plunger 10 whose rear end side is pivotally connected to the side frame by the pivot pin 4 and has a compression spring 5, the magazine 20 is always urged upward, and the upward movement position is regulated by the stopper pin 6; The main components of the staple guide device of the present invention include the staple guide 30, which has a staple receiving fitting 80 (see FIG. 2 onwards) attached to the front end, which will be described later, and the rising cover 40, as well as the plunger receiving plate 50 and the click. Spring 60 (second,
(see Figure 3), a magazine cover 70 formed with a staple driving groove 73 (see Figures 2 and 3) that cooperates with the staple receiving fitting 80, and other pushers whose illustrations and descriptions are omitted for public use. It is structured accordingly.

By the way, the above-mentioned plunger 10 will be explained with reference to FIGS. 2 and 3. It has a channel type in which the rear plate is attached halfway, or a rectangular cylindrical shape with a channel-shaped upper part, and the front plate is in the form of a channel. , two driver mounting protrusions 11, 11 provided along the length direction and three mounting holes 16 provided along the length direction of the driver 15,
16, 16, the driver 15 is attached so that it can be used upside down, and a part of its side plate is punched out and bent to form a plunger of a plunger receiving plate 50, which will be described later. Lifting position regulating protrusions 12, 12 that collide with the lifting position regulating horizontal upper plate portion 51 and regulating its raised position.
(One side is omitted) Bottom surface and magazine 2 described later
It is always urged upward by a compression spring 17 interposed between a compression spring receiving plate 25 with a guide rod and a compression spring receiving plate 25 installed between the upper edges of the front end side of the 0. These configurations are completely equivalent to that of Japanese Utility Model Application No. 61-92575, which was filed by the present applicant at the same time as this application.

Further, as shown in FIGS. 2, 3, and 4, the magazine 20 has a shape in cross section, as seen in conventional magazines of this kind, and its side walls 22, 22
A compression spring receiving plate 25 with a guide rod is installed between the upper edges of the front end side, and has a guide rod 26 fitted into the lower part of the compression spring 17. A staple guide 30 with a cross-sectional shape separated by gaps 23, 23, etc.
is installed. This staple guide 30
The bottom plate 31 of the magazine 20 and the bottom plate 21 of the magazine 20 are formed with cut and raised pieces 33 and 24, respectively.
The staple guide 30 is provided with a tension spring 35 that protrudes into the staple guide 30 through a sliding hole 34 formed in the bottom plate 31 of 0 and is tensioned between the cut and raised pieces 24 and 33. Like conventional staple guides of this type, they are always biased toward the front end, that is, in the forward direction. Therefore,
This staple guide 30 is forced to retreat against the biasing force of the tension spring 35 when driving staples.

A staple receiving metal fitting 80, which is the main component of the staple guide device according to the present invention, is attached to the front end of the staple guide 30.

Therefore, this staple receiving metal fitting 80 will be explained with reference to FIGS. 2 and 3, especially FIGS.
This staple receiving metal fitting 80 is made of an elastic hard material hardened by heat treatment or the like, and is made of the side plates 3 of the staple guide 30 having the shape of the cross section.
2 and 32, and covers the front end of the staple guide 30 so that the upper surface forms the same plane as the other uncut upper edge surface, and both corners of the upper surface of the front end edge From the front end edge of the staple support plate 81, which is formed at a substantially right angle in both plan view and side view, both side plates 32 of the staple guide 30,
Vertical claw pieces 82, 82 that separately cover the front edge surfaces of 32
Between the vertical claw pieces 82, 82 on both sides, an elastic claw piece 83, which is inclined a little further forward than these claw pieces 82, 82, is suspended in a fork shape. The vertical claw pieces 82, 82 and the elastic claw piece 83 at the front end of the staple receiving metal fitting 80 are made to protrude into a staple driving groove 73 formed in the front plate 71 of the magazine cover 70, which will be described later. . Further, a mounting portion 84 is provided on the rear end edge of the staple support plate 81 and is bent into a substantially shape so as to fit elastically between the side plates 32, 32 of the staple guide 30. Cut and raised piece 8 formed on the side plate of section 84
5, 85 to each side plate 32 of the staple guide 30,
It is adapted to be fixed by resiliently engaging with locking recesses 36, 36 formed on the inner surface of 32.

The rising cover 40 includes a bottom plate and side plates 41, 41 that are bent upward from both sides of the bottom plate and have stepped portions 42, 42 (one not shown) that abut against the stopper pin 6. The cross-sectional shape is shaped, and the front end of the bottom plate is slightly cut out to make it shorter. Also, between the side plates 41 and 41, and between the upper part near the rear end, there is a plunger receiving plate/click spring (magazine). A mounting pin 43 (for holding down the cover) is mounted between the lower parts thereof, and a pin 44 for fixing the plunger receiving plate is mounted between the mounting pins 43, and both ends of the pins 43 are made to protrude outside the side plates 41, 41, as will be clear from the description below. There are projecting shafts 45, 45 for attaching the magazine cover on the upper part (one is not shown; a projection separate from the pin 43 is also possible),
Furthermore, lower magazine cover attachment projections 46, 46 (one not shown) are protruded from the lower outer sides near the front ends of the side plates 41, 41, which will also become clear from the description later. 20
From below, the magazine 2
The magazine 20 and the front edge of the rising cover 40 are flush with each other.

Further, the plunger receiving plate 50 includes a horizontal upper plate portion 51 for regulating the plunger ascending position that abuts against the upper surface side of the ascending position regulating protrusions 12 and 12 which also serves as a compression spring receiver for the plunger 10, and a vertical plate part 52 that slides into sliding contact with the side surface of the rear end side to guide the vertical movement of the vertical plate; Insertion hole 54 for insertion,
54 (one not shown) and both sleeve plates 53, 53 having fitting grooves 55, 55 (one not shown) formed from the lower edge into which the pins 44 are fitted, and the rising cover. 40 side plates 4
It is installed and fixed between 1 and 41.

Furthermore, the click spring 60 for holding down the magazine cover uses a leaf spring consisting of a wide plate part at the top and bottom and a narrow plate part at the center, and the wide plate part at the top is bent into a U-shape. Both front edges 62, 62 are the vertical plate portions 5 of the plunger receiving plate 50.
The sleeve plates 61, 61 are formed with mounting holes 63, 63 into which the pins 43 are inserted so as to abut on the back side of the 2, and the lower wide plate part has:
Each side plate 72 in the magazine cover 70 described later,
Lateral V-shaped click spring engagement grooves 77, 77 and 7 formed in two stages on the rear edge of the rear end of 72;
8, 78 (one of them is not shown),
This is achieved by forming a horizontal chevron-shaped protrusion 65 for fixing the magazine cover 70, which is attached to the rising cover 40 together with the plunger receiving plate 50 by the click spring mounting pin 43. It is attached between both side plates 41, 41 in 40.

Last but not least, the magazine cover 70 is shaped when viewed from above with a front plate 71 and both side plates 72, 72 so as to cover the front sides of the magazine 20 and the rising cover 40, whose front edges are flush with each other. A staple driving groove 73 for guiding the driver 15 and driving staples is formed on the inner surface of the front plate 71. The flat surface portions 74, 74 on both sides are in close contact with the front edges of the magazine 20 and the rising cover 40, and the upper portions of the both side plates 72, 72 are provided with flat surfaces 74, 74 on both sides of the rising cover 40. 41,41
A protruding shaft for mounting a magazine cover whose upper part is closed and whose lower part is open at the rear edge, into which the protruding shafts 45, 45 (one not shown) for mounting the magazine cover provided at the upper part are inserted. L-shaped groove for fitting 7
5, 75, and vertical grooves 76, 76 (one not shown) for fitting the magazine cover mounting protrusion 46 from the lower edges of the side plates 72, 72. Furthermore, the chevron-shaped projections 65 of the click springs 60 for holding down the magazine cover are selectively fitted into the rear edges of the side plates 72, 72, so that the magazine cover 70 can be fixed at different positions. Click spring engaging grooves 77, 77 and 78, 78 (one of which is not shown) are formed at two locations, upper and lower.

The magazine cover 70 is fitted and secured from below to the front end side of the magazine 20 to which the staple guide 30 is attached, and the front edge of the rising cover 40 is flush with the front edge thereof. Push the side plates 41, 41 of the cover 40 up from the front side between the side plates 72, 72, push the chevron-shaped protrusion 65 of the click spring 60 backward with the rear edges of the side plates 72, 72, and press the L When the protruding shafts 45, 45 are inserted deeper into the openings of the letter-shaped grooves 75, 75, the protrusions 46, 46 come below the vertical grooves 76, 76, and the magazine cover 70 is then pushed down. The protruding shafts 45, 45 are fitted into the closed upper portions of the vertical portions of the L-shaped grooves 75, 75, and the protrusions 46, 46 are fitted into the upper portions of the vertical grooves 76, 76, respectively, while the click springs The chevron-shaped protrusion 65 at 60 passes over the click spring engagement grooves 78, 78 and extends over the click spring engagement grooves 77, 77.
The magazine cover 70 is engaged, and the flat surfaces 74, 74 are brought into close contact with the front edges of the magazine 20 and the rising cover 40,
It is assembled in such a way that it can fully function as a stapler for simple bookbinding, thick binding, etc.

Note that the rising cover 40 and click spring 60 in the above are removed, and both side plates 22, 2 of the magazine 20 are removed.
Stand up the front end side of 2 in a 〓 shape when viewed from the front,
By using this rising portion, a plunger receiving plate equivalent to the plunger receiving plate 50 can be attached between the both side plates, or the both side plates can be attached to the magazine cover 70.
It goes without saying that it may be fitted between both side plates of a magazine cover that is equipped with staple driving grooves equivalent to the above, and that this is a well-known technique. Therefore, this is shown as another embodiment and its description is omitted.

As mentioned above, when the stapler assembled especially for simple bookbinding or thick binding, etc. and equipped with the staple receiving metal fittings 80 is not in use, the handle 7 is released.
The plunger 10 is pushed up by a compression spring 17 and is held stationary at the highest position by a plunger receiving plate 50, accompanied by a driver 15, while the staple guide 30 is pushed up by a tension spring 35.
The vertical claw piece 8 of the staple receiving metal fitting 80 is moved forward in the direction of the magazine cover 70 by the
2, 82 and the elastic claw piece 83 between them are inserted into the staple driving groove 73 of the magazine cover 70 (see FIG. 2), so the one-block staple loaded on the staple guide 30 is removed by a pusher (not shown). The staple at the forefront is pushed by the vertical claw pieces 82, 82 and the elastic claw piece 8.
3, and the next and subsequent staples are supported by the staple support plate 81 and the staple guide 30.

Since both corners of the upper surface of the front end edge of the staple support plate 81 are formed at substantially right angles in both plan view and side view, when the driver 15 is pushed down via the plunger 10 by operating the handle 7, , the staple at the forefront end is smoothly separated, and in the process of driving the staple, the staple receiving metal fitting 80 receives a rearward pushing force from the staple driven by the driver 15, and resists the tension spring 35. Even though the staple guide 30 is moved back together with the staple guide 30, the elastic claw piece 83 of the staple receiving metal fitting 80 resiliently contacts and slides against the lower surface of the horizontal part between the legs of the staple until the staple is driven and separated. This will guide you to avoid buckling.

By the way, the staple receiving fitting 80 is made of an elastic hard material that is hardened by heat treatment, etc., and its vertical claw pieces 82 cover the front edges of the side plates 32, 32 of the staple guide 30. Since the staple guide 30 is protected, it will not be damaged in any way, and therefore, unlike conventional staple guides of this kind, the staple guide itself may be slightly distorted or deformed in its dimensions and shape. There is no need to harden the staple guide by heat treatment or the like, which would lead to a hardening, and as a result, the staple guide 30 can be made to be compatible with other parts as well.

(Effect of the invention) As is clear from the above description, a magazine with a shaped cross-sectional shape has a shaped cross-sectional shape with a staple delivery gap in between, and can be returned to its original state by the biasing spring. At the front end of the attached staple guide, there is a vertical claw piece made of an elastic hard material that protects the front edge surface of the staple guide, and a vertical claw piece located between the vertical claw pieces and a little forward of these claw pieces. By attaching a staple receiving metal fitting equipped with an elastic claw piece, etc., a.
By eliminating the need for hardening through heat treatment, etc., which would cause deviations in the dimensions and deformation of the shape, a compatible staple guide with the desired dimensions and shape can be obtained. As a result, not only has the process of assembling the stapler become extremely easy, but it has also become possible to provide a stapler with high precision that can function satisfactorily over a long period of time.

(b) Furthermore, since both corners of the upper surface of the front end edge of the staple support plate are formed at substantially right angles in both plan view and side view, the staple at the front end can be separated smoothly.

c.Furthermore, the elastic claw piece, which is projected into the staple driving groove of the magazine cover together with the vertical claw piece, allows the staple to be driven into the lower surface of the horizontal part between the two legs of the staple driven by the driver. Since the staples resiliently abut and slide until they are separated, the staples can be driven accurately vertically and can be prevented from buckling.

We have made it possible to provide a stapler that has truly excellent practical effects such as.

[Brief explanation of the drawing]

The drawings show an embodiment of the staple guide device of the stapler according to the present invention, and FIG. 1 is a partially cutaway side view of the stapler incorporating the staple guide device of the present invention, and The figure is a partially enlarged longitudinal sectional side view for explaining the main parts, and FIG. 3 is an exploded perspective view for explaining the main parts with some illustrations omitted.
Fig. 4 is a partial plan view for explaining the main parts, Fig. 5 is a side view of only the staple receiving fitting, Fig. 6 is a front view thereof, Fig. 7 is a plan view thereof, and Fig. 8 is a partial plan view of the staple receiving fitting. It is a sectional view along the - line in the figure. 1; Base, 2; Side frame, 3, 4; Pivot pin, 5; Compression spring, 6; Stopper pin, 7;
Handle, 10; Plunger, 11; Projection for attaching a driver, 12; Projection piece for regulating the ascending position, 1
4; Interlocking pin, 15; Driver, 16; Mounting hole, 17; Compression spring, 20; Magazine, 2
1; bottom plate, 22; side plate, 23; staple delivery gap, 24; cut and raised piece, 26; guide rod, 25; compression spring receiving plate with guide rod, 30; staple guide, 31; bottom plate, 32; side plate, 33; cut and raised piece,
34; sliding hole, 35; tension spring, 36; locking recess, 40; rising cover, 41; side plate, 4
2; Stepped portion, 43; Plunger receiving plate/click spring (for magazine cover holding down) mounting pin, 4
4; pin for fixing the plunger receiving plate, 45; protruding shaft for attaching the magazine cover, 46; protrusion for attaching the magazine cover, 50; plunger receiving plate, 51; horizontal upper plate part for regulating the rising position of the plunger, 52; vertical plate part, 53; Sleeve plate, 54; Fitting hole, 55; Fitting groove, 60; Click spring, 61; Sleeve plate, 6
2; front edge, 63; mounting hole, 65; chevron protrusion,
70; Magazine cover, 71; Front plate, 72; Side plate, 73; Groove for driving staples, 74; Flat surface portion, 75; L-shaped groove for fitting protrusions for attaching magazine cover, 76; Vertical for fitting protrusions for attaching magazine cover Directional grooves, 77, 78; click spring engagement grooves;
80; Staple receiving metal fitting, 81; Staple support plate, 82; Vertical claw piece, 83; Elastic claw piece, 84;
Mounting part, 85; cut and raised piece.

Claims (1)

[Scope of utility model registration request] At the front end of a staple guide, which has a shaped cross-sectional shape and is mounted in a magazine having a shaped cross-sectional shape, with a staple delivery gap in between, and is mounted so as to be able to return in the direction of the staple driving groove by a biasing spring. , from the front end edge of a staple support plate made of an elastic hard material, covering the top surface of the front end portion of the staple guide, and having both corners of the top surface of the front end edge formed at substantially right angles in plan view and side view. , a fork-shaped vertical claw piece that separately covers the front edge surface of both side plates of the staple guide, and an elastic claw piece that is inclined slightly forward than these nail pieces between the vertical claw pieces on both sides. A vertically disposed staple receiving metal fitting is attached, and the vertical claw piece and the elastic claw piece of the staple receiving metal fitting are inserted into the staple driving groove formed on the inner surface of the magazine cover attached to the front end of the magazine. A staple guide device for a stapler characterized by a staple guide device.