JP2005111198A - Cutter worn on finger for use - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutter capable of omitting the time and labor required for taking out, the extraction and retraction of a blade, etc. and speedily and efficiently performing cutting work. <P>SOLUTION: The cutter is provided with a form to be used while worn on a finger. Its main body has a cylindrical opening part in which one or a plurality of fingers can be inserted in such a way to be held between the first joint and the second joint of the one finger or between those joints of the plurality of fingers. A tongue-like protrusion for hooking and lifting up a binding is joined to the main body at a narrow angle. A blade is fixed between the main body and the plate-like protrusion. The binding or the like is cut by bending the finger wearing the cutter inward, hooking the binding or the like with the tongue-like protrusion, and pulling it to one's side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cutter knife that is used by being fitted on a finger.

Conventionally, with regard to knives and cutters, there has been a method in which the handle of the knife also serves as a hook that is hooked on the belt as it is, with the aim of easily taking out and storing it in consideration of convenience during use. (For example, see Patent Document 1)
Further, in consideration of the convenience of inserting and removing the blade, there is one having a structure in which the blade can be easily exposed by simply holding it with one hand. (For example, see Patent Document 2)

          Japanese Patent Laid-Open No. 10-76078           JP-A-7-289750

  Conventional cutters and knives have been devised in various ways to ensure convenience and safety. As seen in the above-mentioned literature, there are methods such as simplifying the process of inserting and removing the blade, and making it possible to hook the knife on the belt in order to save the trouble of taking out and storing the cutter knife one by one from the pocket. However, only during the cutting operation, the cutter and knife were taken out and held in the hand, the blade was pulled out to perform the cutting operation, the blade was closed, and the series of operations were repeated. However, these processes are complicated, such as when cutting work continues frequently, and the time loss is large and it cannot be said to be efficient. The problem to be solved by the present invention is how to save time and trouble of taking out the cutter, taking in and out the blade, etc., and performing cutting work more speedily and efficiently.

  In order to solve the above problems, the present invention adopts a form in which a cutter is used while being fitted to a finger, and a cylinder into which a finger can be inserted so as to stay between the first joint and the second joint of one or more fingers. A tongue-shaped projection for hooking up a bundle to a main body having a shaped opening is joined to the main body at a narrow angle, a blade is fixed between the main body and the plate-shaped protrusion, and the cutter is An apparatus is provided that performs cutting by bending a finger that has been fitted inward, hooking a bundle or the like with a tongue-like projection, and pulling it forward.

  The shape of the cutter body is a cylindrical shape having an opening in which one or a plurality of fingers can be fitted or two cylindrical shapes arranged in parallel, and the size of the opening is the size of the first joint and the second joint of the finger. The finger can be inserted so that it stays in between, the size of the finger to fit into the main body with moderate resistance, and the depth parallel to the opening direction of the main body is between the first joint and the second joint of the finger The length is slightly shorter than the length. Also, the size and shape of the body must be such that the finger joints will not be disturbed when the fingers are bent inward.

  In addition, the tongue-like projections connected to the main body from the vicinity of the edge of the opening of the main body project at a narrow angle with the opening direction axis of the main body, and have a tongue-like shape so that it can be hooked up and tied up. Shall be made.

  A blade is attached between the main body and the tongue-shaped protrusion, and the blade is inclined so as to rise obliquely from the tongue-shaped protrusion and be attached to the main body. At this time, an angle formed between the surface of the tongue-shaped projection facing the main body and the blade edge is an obtuse angle, and an angle formed between the blade edge and the surface facing the tongue-shaped protrusion of the main body is an acute angle. As a result, the binding or paper that is scooped up by the tongue of the hook moves while sliding from the tongue-like projection to the blade, and finally gets caught at the joint between the blade and the main body, and continues to pull, so that the binding and paper etc. Will be disconnected.

Since the present invention is configured as described above, the following effects can be obtained.
The blade is always fixed and kept in use, and can be used with a finger, so if you just put it on your finger, you can take it out of your pocket or belt when you go to the cutting work. When the cutting operation is finished, there is no need to waste time and labor since there is no need to return the blade to the pocket or belt. In addition, even when cutting is not in progress, there is an advantage that other operations can be performed because the fingers can be used freely with the fingers on. In addition, since the bundling or the like is hooked on the tongue-like projection and the scooping up is used, the blade does not come into contact with the packaging or the like, and the packaging or the like is not accidentally cut with the blade as in a conventional cutter operation. At the same time, since there is no possibility that the blade touches the fingers during the cutting operation, it is possible to work safely. In addition, the size is relatively small and the portability is good. Furthermore, the structure is simple, the number of parts is small, and the manufacturing cost can be kept low.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples with reference to the drawings.
1 and 2 are perspective views of an embodiment having a main body 1 into which one finger is inserted. The opening 2 provided in the main body 1 has a cylindrical shape or a substantially cylindrical shape, and has a diameter that can be inserted into the main body with an appropriate resistance when a finger is inserted, and the depth is the first joint of the finger to be inserted. And a length slightly shorter than the length between the second joint. Note that the index finger or middle finger is appropriate as the finger to be inserted, considering the strength.

  Further, the size and shape of the main body 1 must be such that the movement of the joint of the finger does not hinder when the finger is bent inward. Therefore, the surfaces 12 and 13 having the opening of the main body are inclined at a certain angle with respect to the surface orthogonal to the direction of the opening 2 of the main body. Further, it is desirable that the main body 1 and the tongue-like protrusion 3 which is coupled to the main body from the vicinity of the opening edge end 34 of the main body and crawls up by binding are integrally formed.

  FIG. 3 is a side view of an embodiment having a main body 1 into which one finger is inserted. The angle formed by one surface 11 of the main body and one surface 31 of the tongue-like protrusion is about 20 to 40 degrees. The blade 4 needs to be fitted on both the side 11 of the body facing the tongue-like projection and the side 31 of the projection facing the tongue-like body. The angle formed between the one surface 31 of the tongue-like protrusion and the blade edge 42 is an obtuse angle, and the angle formed between the blade edge 42 and the one surface 11 of the main body is an acute angle.

  Bundling such as a string scooped up near the edge 32 of the tongue-like protrusion starts to break while moving on the blade edge 42 as it is, and is completely broken by receiving stronger resistance at the position 43 where the main body 1 and the blade 4 intersect. To do.

  FIG. 4 is a plan view of an embodiment having a main body 1 for inserting one finger. The diameters of the two openings 21 and 22 of the main body may be the same, but in order to be able to insert into the main body with an appropriate resistance when a finger is inserted as described above, the shape of the finger is somewhat It is desirable that the diameter of 22 has a diameter larger than 21.

  FIG. 6 is a perspective view of an embodiment having a main body 100 into which two fingers are inserted. Except that the main body has two openings for inserting two fingers, the basic configuration is the same as the embodiment having the main body for inserting one finger as shown in FIGS. Since the tongue-like projection 300 can be made larger than the one-finger type and can be pulled with two fingers, it can be used for a thicker or tougher binding.

  FIG. 7 is a usage diagram when a type in which two fingers are inserted is actually fitted to a finger to draw a bond. Since the fingers are bent and pulled in this way, it is easy to apply force, and the fingertips are not caught in the binding. Further, since the tongue-shaped projection 300 is in contact with the package and the blade 400 is not in contact with the package, there is no fear of damaging the package.

  FIG. 1 is a perspective view of an embodiment having a main body into which one finger is inserted.   FIG. 2 is a perspective view from another direction of an embodiment having a main body into which one finger is inserted.   FIG. 3 is a side view of an embodiment having a main body 1 for inserting one finger.   FIG. 4 is a plan view of an embodiment having a main body 1 for inserting one finger.   FIG. 5 is a front view of an embodiment having a main body 1 for inserting one finger.   FIG. 6 is a perspective view of an embodiment having a main body into which two fingers are inserted.   FIG. 7 is a view of use when an embodiment having a main body into which two fingers are inserted is actually fitted on a finger to draw a bond.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 11 in the example which inserts one finger The 1st surface of the main body which faces the plate-shaped protrusion in the example which inserts one finger 12 The 1st body with an opening of the main body in the example which inserts one finger Surface 13 Second surface having an opening of the main body in the embodiment in which one finger is inserted 2 Opening portion 21 of the main body in the embodiment in which one finger is inserted Second opening of the main body in the embodiment in which one finger is inserted 1 edge end 22 second edge end 3 of the opening of the body of the embodiment in which one finger is inserted tongue-like projection 31 in the embodiment in which one finger is inserted tongue in the embodiment in which one finger is inserted Surface 32 of the projection facing the body 32 The front end 33 of the tongue-like projection in the embodiment in which one finger is inserted The front-end end portion 34 of the tongue-like projection in the embodiment in which one finger is inserted and in contact with the blade Insert the last 4 fingers of the tongue-like projection in contact with the blade in the embodiment of inserting a book Blade 41 in the embodiment The foremost end portion 42 of the blade in the embodiment in which one finger is inserted Blade blade portion 43 in the embodiment in which one finger is inserted The last end portion 100 of the blade in the embodiment in which one finger is inserted Main body 101 in the embodiment in which two fingers are inserted One surface 200 of the main body facing the plate-like protrusion in the embodiment in which two fingers are inserted First opening 201 in the main body in the embodiment in which two fingers are inserted Two fingers The second opening 300 of the main body of the embodiment for inserting the finger Tongue protrusion 301 in the embodiment of inserting two fingers The surface 302 of the tongue-like protrusion in the embodiment of inserting two fingers The two fingers Of the tongue-like projection in the embodiment in which the finger is inserted, the tongue-like projection in the embodiment in which two fingers are inserted, and the tongue-like projection in the embodiment in which two fingers are inserted. Last end 400 in contact with blade 2 Finger 2 Blade 401 in the embodiment in which a book is inserted Front end portion 402 of the blade in an embodiment in which two fingers are inserted Blade blade portion 403 in the embodiment in which two fingers are inserted Last blade end in the embodiment in which two fingers are inserted edge

Claims (2)

A body having an opening shaped to allow a finger to be inserted so as to remain between the first and second joints of one or more fingers;
A plate-like protrusion for hooking up and binding a bundle or paper, which is fixed at a narrow angle with the main body;
A cutter for use with a finger, comprising: a blade fitted between the main body and the plate-like protrusion. A body having an opening shaped to allow a finger to be inserted so as to remain between the first and second joints of one or more fingers;
A plate-like protrusion for hooking up and binding a bundle or paper, which is fixed at a narrow angle with the main body;
A blade fitted between the main body and the plate-like protrusion,
Insert into the finger so that the plate-like projection comes to the back of the hand at the opening of the main body and the tip of the plate-like projection faces the fingertip direction,
When using the cutter, bend the finger inserted into the main body to the palm side, hook the bundle with the plate-like projections that came to the lower side, scoop up the front and cut the bundle,
Cutter to be used with fingers.

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