JPH08145Y2 - Needle bending device for stapler - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stapler bending device for a stapler that bends a leg of a staple penetrating through a stapler sheet flat along the lower surface of the stapler sheet.

[0002]

2. Description of the Related Art A leg portion of a needle is placed along a lower surface of a spelling paper,
Staples that can be bent horizontally
In the method as shown in 18297, since the slider is retracted via the passive cam and the operating member for canceling the lowering of the paper tray is pivotally attached to either the handle or the needle box, the number of parts is large and the cost is high. This is a high-priced product, has a complicated structure, and has many manufacturing problems in stabilizing the quality.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. The cost is reduced by reducing the number of parts, and the simple structure ensures stable quality. It is an object of the present invention to provide a compact stapler that can secure and bend the needle flat.

[0004]

A handle having a push blade attached to a rear end of a base and a needle box equipped with a needle pusher biased by a needle push spring are axially attached, and a front end of the base is attached. In a stapler provided with a bending stand, a paper tray having a needle opening at the front end of the base is arranged so as to be movable back and forth,
Immediately before completing the pushing out of the needle by the pressing blade when binding the paper, the inclined pressing portion provided inside the side wall of the handle pushes the inclined receiving portion of the paper receiving tray backward and rides on the stepped portion of the front end of the base. When the front end of the paper tray moves in the rearward direction and comes off the step, the paper tray is lowered.

[0005]

Since the present invention is constructed as described above, when the handle is not pushed down, the needle box and the handle are lifted by the pressing portion of the push blade, and the paper tray is lifted by the force of the coil spring. The step of the base prevents the descent, and the tilt pressing part is separated from the tilt receiving part. Therefore, when the binding paper is placed on the paper tray and the handle is pushed down, the needle outlet formed in the needle box comes into contact with the binding paper, the inclined pressing portion faces the inclined receiving portion provided on the paper tray, and the pushing operation is further performed. As a result, the needle penetrates the binding sheet by the pressing blade, and in the process of pushing out the needle, the tilt pressing part gradually approaches the tilt receiving part and before the needle pushing out is completed, the tilt pressing part moves the tilt receiving part. In order to retreat, the paper tray moves backward from the step of the base, the paper tray is lowered, and the leg part of the needle after penetrating the binding paper is bent by the bending stand, It can be bent flatly along with.

[0006]

[Examples] Explaining examples, 1 is a base,
2.2.2.2 is a shaft protrusion provided inside and outside the side wall 3.3,
A needle box 23 and a handle 29, which will be described later, are pivotally attached to each other. Reference numeral 4 denotes a step portion provided inside the front end portion. Reference numeral 5 denotes a pedestal provided near the front end portion, and a bending table 21 is attached to the upper end portion thereof. Reference numeral 6 denotes a fixed portion. A hook portion 7 is provided near the rear end portion of the fixed portion 6, and guide walls 8.8 are provided on both right and left sides of the fixed portion 6 so as to be in contact with an inner side wall 14 of a paper tray 11 which will be described later. It is stopping the backlash. Reference numeral 9.9 denotes an upward movement restricting protrusion provided inside the center of the side wall 3, and a fulcrum protrusion 10.10 is provided at a position slightly rearward of this. Reference numeral 11 denotes a paper receiving stand, and a needle opening 12 and a stop portion 13 are provided at a front end portion of the side wall 14.
14 toward the rear end portion of the inclined receiving portion 15.15 and a fulcrum long groove 16.16 which is movable in the front-rear direction, and a concave portion 17 which can be moved vertically toward the center of the side wall 14.14. .17 and a hook portion 18 at the rear end.

Assembling of the base 1 and the paper tray 11 will be described. A coil bar 19 is assembled to the fixed portion 6, and a tension spring 20 is hooked between the hooking portion 7 and the hooking portion 18 so that the fulcrum protrusion 10. After assembling the fulcrum long groove 16.16 to 10, the recess 17.17 is press-fitted into the upper movement restricting projection 9.9 and stopped. Then, the fulcrum long groove 16.16 of the paper receiving table 11 becomes the fulcrum protrusion 10.1.
With the coil spring 19 as the fulcrum, the paper receiving tray is pushed upward by the coil spring 19, and the recess 17.17 of the paper receiving tray 11 is moved upward by the upward movement restricting projection 9.9 by the amount corresponding to the needle leg from the upper surface of the bending table 21.
It is set so as to stop at the position where the needle opening 13 of the paper tray 11 is raised. The paper receiving tray 11 pulled by the tension spring 20 moves by the fulcrum long groove 16.16, and the stop portion 13 of the paper receiving tray 11 contacts the receiving tray 5 to restrict the movement toward the front end portion.

Reference numeral 21 is a bending table having a needle bending groove 22.
Reference numeral 23 denotes a needle box, and a side wall 24.24 at the rear end portion has a shaft mounting hole 25.
25, the needle outlet 26 is provided at the front end, and the side wall 24.24.
A needle pusher 28 is pulled toward the front end by a tension spring 27 on the inside. 29 is a handle 30.30 on the side wall.
A shaft mounting hole 31.31 is provided inside the rear end of the side wall 3
An inclined pressing portion 32.32 is provided inside the center of 0.30. 33 is a push blade that pushes down the needle.
Is a circular arc-shaped bifurcating pressing portion, and the pressing portion 34 is a base 1.
The pressing part 35 presses the upper surface of the side wall 3 of the needle box 23, and the upper surface of the needle box 23 near the rear part thereof, and the needle box 23 and the handle 29 are pushed upward.

Since the present invention is constructed as described above, when the handle 29 is not pushed down, the handle 29 is lifted upward by the pressing portion 35 and the needle box 23 is lifted upward by the pressing portion 34 as shown in FIG. The paper tray 11 is lifted upward by the coil spring 19, and the paper tray 1 is raised at a position higher than the upper surface of the bending stand 21 by the length of the staple leg.
The lower surface of the recess 17.17 of the first contact abuts the upper movement restricting protrusion 9.9 of the base 1 and stops. At the same time, it is pulled in the front end direction by the tension spring 20, and the lower surface of the front end of the paper tray 11 is
Located on the upper surface of the step 4 at the tip of the base 1, the stop 13 of the paper tray 11 abuts the tray 5 of the base 1 to regulate the movement in the direction of the tip, and The platform 11 is prevented from descending.

Then, when the spelled paper is placed on the paper tray 11 and the handle 29 is pushed down, the needle is pushed out from the needle outlet 26 of the needle box 23 by the push blade, the leg portion of the needle penetrates the spelled paper, and the paper tray is pushed. In the process of being pushed out into the needle opening 12 of the needle 11, the tilt pressing portion 32.32 turns into the tilt receiving portion 15.
15, the inclined pressing portion 32.32 pushes the inclined receiving portion 15.15 backwards against the tension spring 20 before the completion of pushing the needle, so that the fulcrum protrusion 10.10 serves as a fulcrum for guiding. Since the paper tray 11 is moved by the long groove 16.16,
The tip of the paper tray 11 is disengaged from the step 4 at the tip of the base 1, and the needle box 23 and the handle 29 use the shaft projection as a fulcrum.
The paper pedestal 11 uses the fulcrum projection 10 as a fulcrum and descends as a unit, and stops when the upper surface of the needle opening 12 is at the same height as the upper surface of the bending table 21. In the process of descending, the leg portion of the needle is pushed inward by the needle bending groove 22 of the bending table 21 and is bent flat along the lower surface of the binding sheet.

In this embodiment, the fulcrum protrusions 10.
10 and the upper movement restricting protrusion 9.9 are provided, and the paper receiving base 11 is provided with the fulcrum long groove 16.16 and the concave portion 17.17, but is not provided.
Needless to say, the same effect can be obtained even if the combination of the protrusion, the long groove, and the recess is changed.

[0012]

[Effect of device] 1. A significant cost reduction can be achieved by reducing the number of parts. 2. The structure is simple, there are few failures, the needle can be bent flat, and a compact stapler can be developed.

[Brief description of drawings]

FIG. 1 is a vertical sectional view with a handle opened.

FIG. 2 is a vertical sectional view with the handle closed.

FIG. 3 is a sectional view taken along line AA in FIG. 1 (partially omitted).

FIG. 4 is a sectional view taken along line BB in FIG. 1 (partially omitted).

5 is a cross-sectional view taken along line CC in FIG. 1 (partially omitted).

FIG. 6 is a perspective view of a handle.

FIG. 7 is a perspective view of a pressing blade.

FIG. 8 is a perspective view of the needle box.

FIG. 9 is a perspective view of a paper tray.

FIG. 10 is a perspective view of a base.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Shaft protrusion 3 Side wall 4 Step 5 Receiving base 6 Fixing part 7 Hooking part 8 Guide wall 9 Upward movement regulation protrusion 10 Support point protrusion 11 Paper receiving tray 12 Needle opening 13 Stopping portion 14 Side wall 15 Inclined receiving portion 16 Fulcrum long groove 17 concave portion 18 hooking portion 19 coil spring 20 tension spring 21 bending table 22 needle bending groove 23 needle box 24 side wall 25 shaft mounting hole 26 needle outlet 27 tension spring 28 needle pressing tool 29 handle 30 side wall 31 shaft mounting hole 32 tilt pressing portion 33 Pushing blade 34 Pushing portion 35 Pushing portion

Claims (1)

[Scope of utility model registration request] 1. A handle having a push blade attached to the rear end of the base and a needle box having a needle pusher biased by a needle push spring are pivotally attached, and a bending stand is provided at the front end of the base. In the stapler provided, a paper tray having a needle opening at the front end of the base is movably arranged back and forth, and at the time of paper binding, immediately before the completion of pushing out the needle by the pushing blade, the inside of the side wall of the handle The inclined pressing part provided at the position pushes and retracts the inclined receiving part of the paper receiving tray, the paper receiving tray moves rearward from the stepped portion of the front end of the base, and the paper receiving tray descends. Needle bending device for stapler.