KR100476312B1 - A Cutter for Both Opening an Envelope and Cutting - Google Patents

Abstract

The present invention relates to an envelope unfolding cutter that can be used as a cutter for cutting paper and the like by turning a cutter blade 180 degrees, and capable of cutting and opening a mail envelope. According to the present invention, A movable member 10 embedded therein; And a support member 30 which supports the movable member 10 so as to be linearly movable and pivotable, and has a groove 31 formed in an oblique oblique direction on one side thereof, wherein the movable member 10 is the support member. The cutter 11 is provided with an envelope unfolding cutter, which is characterized in that the blade 11 is located in the slanted groove 31 when in the storage position accommodated in the 20.

Description

A Cutter for Both Opening an Envelope and Cutting}

The present invention relates to an envelope opening / closing cutter that can be used as a cutter for cutting paper or the like by turning the cutter blade 180 degrees and can cut and open a mail envelope.

In order to open a mail envelope, a knife for opening an envelope has been proposed. Conventional envelope opening knives have a general knife shape, but the blade is not made sharp. The user opened the envelope by pushing the blade tip of such a conventional envelope opening knife into the gap of the envelope and moving the knife in one direction.

However, the conventional envelope opening knife has a problem that there is a risk of an accident because the edge of the blade is sharp even if the blade is blunt, and cannot be used when the envelope is sealed and the edge of the blade cannot be pushed into the envelope. There is a problem.

The present invention has been invented to solve the problems as described above, and an object of the present invention is to cut a paper or the like by enabling free switching between the protruding position and the retracting position by turning the cutter blade 180 degrees. It is an object of the present invention to provide an envelope unfolding cutter that can be used as a normal cutter and can cut and open a mail envelope.

According to the present invention for achieving the above object, the movable member is embedded with a blade; And a support member having a groove formed in an oblique oblique direction at one side while supporting the movable member linearly and pivotally, and the blade is formed when the movable member is in a storage position accommodated in the support member. An envelope unfolding cutter is provided, which is located in an oblique groove.

Here, one end of the movable member is formed with a slit-shaped hole in which the blade protrudes, and the other end of the movable member is formed with a hole for inserting or removing the blade when the blade is replaced.

In addition, linear guide grooves having first and second concave portions are formed on the left and right sides of the movable member to guide the linear movement and the pivot movement of the movable member.

In addition, the other side of the support member is provided with a pair of extensions extending toward the rear from the left and right edges, a circular projection is formed at a predetermined position facing the inward side of the extension portion, the stop projection is formed on the inner end surface of the extension portion do.

In the hole formed at the other end of the movable member, a stopper having a straight groove formed on the left and right side surfaces is detachably installed in order to normally close the hole.

When the movable member is in the receiving position, the stopper of the supporting member is inserted into the guide groove of the movable member, and when the movable member is in the protruding position, the supporting member is inserted into the straight groove formed in the stopper of the movable member. The stopper of the insertion is inserted, the movable member can be fixed to the support member so as not to swing arbitrarily.

One side of the movable member is formed with an incision extending in the longitudinal direction, the gripping unit is inserted into the incision through the gripping can selectively move the blade can be moved linearly forward and backward.

Here, the gripping unit is preferably made of a gripping member adjacent to both sides of the blade holding the blade, and a fastening member for maintaining the gripping state of the blade by tightening the gripping member.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the envelope opening and closing cutter according to the present invention.

As shown in FIG. 1, the envelope opening / closing cutter according to the preferred embodiment of the present invention supports the movable member 10 having the blade 11 embedded therein, and the movable member 10 is obliquely supported at one side. It consists of the support member 30 in which the groove 31 is formed in diagonal direction.

The blade 11 embedded in the movable member 10 is preferably used as a replaceable cutter blade. One end of the movable member 10 is formed with a slit-shaped hole 10a through which the blade 11 protrudes, and the other end of the movable member 10 inserts the blade when the blade 11 is replaced. A hole (not shown) that can be taken out is formed. In addition, a stopper 12 for closing a hole formed at the other end of the movable member 10 is usually detachably installed.

Straight grooves 12a extending shortly in the longitudinal direction of the movable member are formed on the left and right sides of the stopper 12, and the stopper 12 has a blade for cutting a blunt blade as in a conventional cutter. It is preferable that the groove 12b is formed.

The blade 11 embedded in the movable member 10 is preferably installed to slide forward and backward. To this end, as shown in Figure 1, the incision extending in the longitudinal direction on the upper surface of the movable member 10 (it is formed on the upper side when seen in Figure 1, but may be formed on any of the upper and lower surfaces). A portion 13 is formed and installed to slide along the cutout portion 13 and configured to linearly move the blade 11 forward and backward by a holding unit 30 capable of holding the blade 11. . Moreover, the tooth | gear part 13a by which the protrusion part and the recessed part are formed in the left and right corner of the cutout part is provided. Operation of the gripping unit 30 will be described later in more detail with reference to FIGS. 5A to 5C.

1, the linear guide groove 14 for guiding the linear movement of the movable member 10 is formed on the left and right sides of the movable member 10, the guide groove 14 of the At a predetermined position, two pairs of first and second circular recesses 15 and 16 are formed to form a pair at corresponding positions on the left and right sides.

The slanted groove 31 formed at one side of the support member 30 is for sliding the insert by inserting an envelope, as shown in FIG. 2, when the movable member 10 is in a storage position. It is made to be located in the diagonal groove 31. Thus, the user only needs to insert the envelope into the oblique groove 31 and then move it along the oblique groove 31 to open the envelope (see FIG. 3). The angle between the diagonal groove 31 and the blade 11 is preferably 45 degrees or less.

The other side of the support member 30 is provided with a pair of extension portions 32 extending toward the rear from the left and right edges. A pair of small circular protrusions 33 are formed on the opposite inward face of the extension part 32 at a predetermined corresponding position, and a rectangular stop protrusion 34 is formed at the proximal end of the inward face of the extension part 32. Formed.

Reference numeral 30a, which is not described, is a through hole to which a key ring or a decorative string can be tied.

Hereinafter, the operation of the envelope-opening cutter of the present invention will be described in detail with reference to FIGS. 4A to 4D.

4A shows the state when the movable member 10 is in the storage position accommodated in the support member 30. When the user wants to open the envelope, the envelope unfolding cutter according to the present invention is placed in a storage state as shown in FIG. ) And the envelope is opened.

When the movable member 10 is to be switched from the stowed position to the projected position, the user first pulls the movable member 10 backward from the support member 30, as shown in FIG. 4B. Since the circular protrusions 33 formed on the inner surface of the extension part 32 of the support member move along the guide grooves 14 formed on the left and right sides of the movable member, the movable member 10 is not detached from the support member 30. It can be linearly moved forward and backward. The user pulls the movable member 10 backward until the circular protrusion 33 is positioned in the first recess 15.

Then, as shown in FIG. 4C, the user pivots the movable member 10 with the circular protrusion 33 as the central axis. Before the turning angle is 180 degrees, the user moves the movable member 10 (indicated by the dashed line) until the circular protrusion 33 is positioned in the second recessed portion 16. Then, the user continues to swing the movable member 10 until the movable member 10 and the support member 30 are in a straight line (indicated by a solid line).

Finally, as shown in Fig. 4D, the user pushes the movable member toward the support member to complete the switching operation to the protruding position.

When the movable member 10 is in the receiving position shown in FIG. 4A, the stopper 34 of the support member is inserted into the guide groove 14 of the movable member, so that the movable member 10 is arbitrarily selected. It is fixed to the support member 30 so as not to swing. Similarly, when the movable member 10 is in the protruding position shown in FIG. 4D, the stop projection 34 of the support member 30 is in a straight groove 12a formed in the stopper 12 of the movable member. Since is inserted, the movable member 10 is fixed to the support member 30 so as not to swing arbitrarily.

5A to 5C, the blade 11 fixed to the gripping unit 20 may move the gripping unit 20 along a cutout portion 13 of the movable member to move the gripping unit 20 linearly. 20) is moved together. Therefore, the user can appropriately adjust the length of the blade 11 protruding from the slit-shaped hole 10a of the movable member.

As shown in FIG. 5A, the gripping unit 20 is adjacent to both sides of the blade 11 and grips the gripping member 21 having a U-shaped cross section for gripping the blade 11 and the gripping member ( It is made of a tightening member 23 for maintaining the gripping state of the blade 11 by tightening 21). Between the holding member 21 and the tightening member 23 is interposed a locking member 22 having a projection 22b in four directions.

The through hole 21a is formed at one side of the U-shaped gripping member 21, and the through hole is not formed at the other side. The side in which the through-hole 21a is formed is located in contact with the locking member 22, and the through-hole 22a is formed in the locking member 22 as well.

In general, an elongated cutter blade 11 is formed with a through hole 11a at one end, and the envelope opening / closing cutter according to the present invention has a short length to use the elongated blade as it is for easy portability. Therefore, it is preferable to cut the cutter blade in half, and to use it. When the cutter blade is cut in half in this manner, the through hole 11a is present on one side but the through hole 11a is not present on the other side. Therefore, according to the gripping unit 20 of the present invention, all blades can be gripped with or without the through hole 11a.

5B is a cross-sectional view of the gripping unit 20 gripping the blade when the through hole 11a is present in the blade. The fastening member 23 is sequentially screwed through the through-holes 22a, 21a, 11a formed in the engaging member 22, the holding member 21, and the blade 11, respectively. At this time, the blade 11 is fixed by the fastening member 23 inserted into the through hole 11a of the blade.

5C is a cross-sectional view of the gripping unit 20 gripping the blade when no through hole is present in the blade. As shown, in the case of using a blade having no through-hole, the blade 11 may be interposed only inside the holding member 21 and then tightened by a fastening member 23 to fix the blade.

In order to advance and retract the blade held by the gripping unit 20 as described above, the user presses the gripping unit 20 so that the projection 22b of the locking member 22 and the tooth 13a of the cutout 13 are removed. After releasing the coupling between the two), the holding unit 20 may be moved back and forth in the state of continuously pressing. Such a configuration is conventionally known and will not be described in detail any further.

As described above, according to the present invention, by turning the cutter blade 180 degrees, it is possible to freely switch between the protruding position and the storing position, so that it can be used as a normal cutter for cutting paper, etc. A bag opening and closing cutter is provided.

In addition, according to the present invention, there is provided a bag opening and closing cutter that can be freely adjusted by the user by holding the blade by the tightening unit to adjust the protrusion length of the blade.

1 is an exploded perspective view of a combined envelope opening cutter according to a preferred embodiment of the present invention,

Figure 2 is a plan view of the envelope unpacking cutter of Figure 1,

3 is a use state diagram of the envelope unpacking cutter of FIG.

4A to 4D are perspective views showing the operation of the envelope unfolding cutter of FIG. 1,

5A is an exploded perspective view of an essential part of the envelope-opening cutter of FIG. 1;

5B and 5C are cross-sectional views of main parts of the envelope-opening cutter of FIG. 1.

<Description of Symbols for Main Parts of Drawings>

10: movable member 11: blade

12: stopper 13: incision

14: guide groove 15: first recessed portion

16: second concave portion 20: gripping unit

21: holding member 22: locking member

23: tightening member 30: support member

31: diagonal groove 32: extension part

33: circular protrusion 34: stop protrusion

Claims (4)

A movable member 10 having a blade 11 embedded therein; And a support member 30 which supports the movable member 10 so as to be linearly moveable and pivotable and at the same time a groove 31 is formed in an oblique oblique direction on one side. And the knife blade (11) is located in the slanted groove (31) when the movable member (10) is in a storage position accommodated in the support member (20). The method of claim 1, One end of the movable member 10 has a slit-shaped hole 10a through which the blade 11 protrudes, and the other end of the movable member 10 inserts the blade when the blade 11 is replaced. There is a hole to pull out, On the left and right side surfaces of the movable member 10, linear guide grooves 14 having first and second recesses 15 and 16 are formed to guide the linear movement and the pivot movement of the movable member 10. And The other side of the support member 30 is provided with a pair of extensions 32 extending toward the rear from the left and right edges, the circular projection 33 is formed at a predetermined inward facing surface of the extension portion 32 And a stopper protrusion (34) formed on the inner end surface of the extension portion (32). The method of claim 2, In the hole formed at the other end of the movable member 10, a stopper 12 having a straight groove 12a formed on the left and right sides is detachably installed to normally close the hole. When the movable member 10 is in the stowed position, the stopper 34 of the support member is inserted into the guide groove 14 of the movable member, and when the movable member 10 is in the protruding position, the The stopper 34 of the support member 30 is inserted into the straight groove 12a formed in the stopper 12 of the movable member, so that the movable member 10 is fixed to the support member 30 so as not to be arbitrarily turned. Envelope unpacking cutter, characterized in that can be. The method of claim 1, One surface of the movable member 10 is formed with a cutout portion 13 extending in the longitudinal direction, and the cutout unit 30 is inserted into the cutout portion 13 to selectively hold the blade 11. Can straighten the blade 11 in front and rear, The gripping unit 20 is adjacent to both sides of the blade 11, holding the gripping member 21 for holding the blade 11 and the gripping member 21 to tighten the gripping state of the blade 11 Envelope unpacking cutter, characterized in that consisting of a fastening member (23) for holding.