JP3284461B2 - Opener - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an opening device used for opening an envelope.

[0002]

2. Description of the Related Art In order to open a conventional envelope, the envelope is mainly opened using scissors. The package is opened using a commercially available electric opener.

[0003]

However, it is extremely dangerous for children who are not used to using scissors to open their hands using scissors, as they may damage their hands.

[0004] In addition, since the electric opener has an extremely complicated structure, its manufacturing cost is considerably high, and it is heavy and inconvenient to carry.

Accordingly, an object of the present invention is to provide an unsealing device which has a simple structure, is lightweight, small, portable, and can be manufactured at low cost.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a substantially L-shaped left frame whose inner lower end is tapered and a tapered inner lower end. An upper L-shaped right frame is joined and formed into a substantially U-shape, and a cutting portion is formed in a middle portion of the insertion slot at the back of the substantially U-shaped insertion port. The upper cutting blade and the lower cutting blade are mounted so as to intersect with each other so as to overlap with each other, and the upper cutting blade and the lower cutting blade are cut by the crossed upper and lower cutting blades. A discharge hole having an inclined surface for easily discharging the cut piece of the envelope is provided above a position close to the intersection of the lower cutting blade and the upper cutting blade. .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An opening device according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a front view of a first embodiment of an opening device according to the present invention, FIG. 2 is a plan view of the first embodiment of the opening device, FIG. 3 is a left side view of the first embodiment of the opening device, FIG. FIG. 4 is a bottom view of the first embodiment of the opening device.

As shown in FIG. 1, the opening device 1 according to the present invention has a substantially rectangular parallelepiped shape.
A discharge hole 4 is formed for discharging the cut piece 13b of the envelope 13 which has been cut off when opened. Reference numeral 5 indicates an inclined surface. The reason why the inclined surface 5 is provided in a part of the discharge hole 4 is to easily discharge the cut piece 13 a of the envelope 13.

As shown in FIG. 3, the opening device 1 of this embodiment includes left and right frames 2 and 3 whose inner lower ends are tapered, and upper and lower cutting blades 9 and 10. The left and right frames 2 and 3 are both substantially L-shaped, and the upper and lower cutting blades 9 and 10 are joined to the substantially L-shaped left frame 2 and the substantially L-shaped substantially right frame 3 to join the left and right frames 2 and 3 together. At this time, an upper cutting blade 9 and an upper cutting blade 10 are interposed between the left frame 2 and the right frame 3 and incorporated.

As shown in FIG. 3, the opening device 1 in which the lower cutting blade 9 and the upper cutting blade 10 are assembled and the left and right frames 2 and 3 are joined and assembled is substantially U-shaped. Reference numeral 6 denotes an insertion slot for inserting the upper part of the envelope 13 when the envelope 13 is opened by the opening device 1 of the present embodiment, reference numeral 7 denotes a rear insertion port, and reference numeral 8 denotes a cut piece 13b of the upper portion 13a of the envelope 13. Is the gap into which

As shown in FIG. 4, the upper and lower cutting blades 10, 9 attached to the back insertion opening 7 of the opening device 1 are connected to the left frame 2 and the right frame 2 so that the lower cutting blade 9 and the upper cutting blade 10 intersect. It is attached to the frame 3.

FIG. 5 is a perspective view showing a mounting method of the cutting blade of the first embodiment of the opening device according to the present invention, and FIG. 6 is a cross-sectional view showing a mounting method of the cutting blade of the first embodiment of the opening device. Figure,
FIG. 7 is a longitudinal sectional view of the first embodiment of the opening device.

As shown in FIGS. 5 and 6, an upper portion 13 of an envelope 13 is provided at an intersection 12 between the lower cutting blade 9 and the upper cutting blade 10.
a enters. The lower cutting blade 9 and the upper cutting blade 10 cross each other at a position close to the discharge hole 4.

As described above, the intersection at the close position is as follows.
As shown in FIG. 7, the upper portion 13a of the envelope 13 has an intersection 12 where the cutting blades 9a, 10a of the upper and lower cutting blades 9, 10 intersect.
This is to allow the cut piece 13b of the envelope cut by the above to easily be discharged from the discharge hole 4 through the gap portion 8.

FIG. 8 is a view showing an opened state of the opening device according to the first embodiment of the present invention, and FIG. 9 is a view showing the first embodiment of the opening device.
It is a partially expanded view of the state opened by the Example.

In order to cut and open the upper portion 13a of the envelope 13 using the opening device 1 of this embodiment, as shown in FIG. 8, the insertion opening 6 and the back insertion opening 7 of the opening device 1 of this embodiment are provided. The envelope 13
And the right end of the upper portion 13 a of the envelope 13 is brought into contact with the intersection 12.

Thereafter, as shown in FIG. 9, the opening device 1 grasped by the finger is moved in the direction of arrow a, and the envelope 13 grasped by the finger is moved in the direction of arrow b. 10 are cut off at the intersection 12 where they intersect, and the cut piece 13b cut is guided from the discharge hole 4 to the inclined surface 15 and discharged. In this way, the upper portion 13a of the envelope 13
Is cut and opened.

[0018]

According to the present invention, since the configuration is as described above, the envelope can be easily opened. Further, the present opening device has the advantages that it is extremely simple, lightweight, easy to handle, and extremely low in manufacturing cost.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of an opening device according to the present invention.

FIG. 2 is a plan view of a first embodiment of the opening device according to the present invention.

FIG. 3 is a left side view of the first embodiment of the opening device according to the present invention.

FIG. 4 is a bottom view of the first embodiment of the opening device according to the present invention.

FIG. 5 is a perspective view showing a method of attaching the cutting blade of the first embodiment of the opening device according to the present invention.

FIG. 6 is a cross-sectional view showing a method of attaching the cutting blade of the first embodiment of the opening device according to the present invention.

FIG. 7 is a longitudinal sectional view of a first embodiment of the opening device according to the present invention.

FIG. 8 is a view showing a state in which the unsealing device according to the first embodiment of the present invention is opened.

FIG. 9 is a partially enlarged view showing a state in which the unsealing device according to the first embodiment of the present invention is opened.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 opening device 2 left frame 3 right frame 4 discharge hole 5 inclined surface 6 insertion port 7 depth insertion port 8 gap portion 9 lower cutting blade 9a cutting portion 10 upper cutting blade 10a cutting portion 11 joining portion 12 intersection portion 13 envelope 13a Upper 13b cut piece

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model 3-114397 (JP, U) Japanese Utility Model 1991-13963 (JP, U) Japanese Utility Model 4-135270 (JP, U) Japanese Utility Model 3 114395 (JP, U) Fully open sho 63-107679 (JP, U) Fully open sho 49-7584 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B26B 27/00

Claims (1)

(57) [Claims] 1. A substantially L-shaped left frame whose inner lower end is tapered and a substantially L-shaped right frame whose inner lower end is tapered are joined into a substantially U-shaped. Forming and providing a gap on the upper cutting blade and the lower cutting blade where the cutting part is formed with a cutting part in the middle part of the back insertion port of the substantially U-shaped insertion port The upper cutting blade and the lower cutting blade are mounted so as to cross each other so as to overlap, and a discharge hole having an inclined surface for easily discharging a cut piece of an envelope cut by the upper and lower cutting blades mounted in a crossing manner. An opening device provided above a position close to an intersection of the lower cutting blade and the upper cutting blade.