JPH0666572U - cutter - Google Patents

Abstract

(57) [Summary] [Purpose] In the cutter blade insertable type cutter,
Improve safety during use by making simple improvements. [Structure] A cutter blade 1, a frame 2 for holding the cutter blade 1 in a retractable manner, and a cutter blade 1 connected to the cutter blade 1 and engaged with the frame 2 so as to be movable relative to each other In a cutter having a movable operation portion 3 for fixing the cutter blade 1 with, a tip 7 of the cutter blade 1 covers the cutter blade 1 at the tip of the frame body 2 from which the cutter blade 1 projects.
A cutter in which a cover member 6 having an open side is provided and the cover member 6 is urged toward the cutting edge 7 side so as to be movable to the side opposite to the cutting edge of the cutter blade 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a cutter, such as a folding blade type cutter, which involves taking in and out the cutter blade when it is used.

[0002]

[Prior art]

 Cutters, which are typified by folding blade type cutters, require a cutter blade to be taken in and out when used, and are widely known. It is used in various industrial fields, for example, in the work of cutting an object, for example, for sampling to measure the characteristics of a product.

A conventional cutter of this kind is constructed, for example, as shown in FIG. In the figure, 31 indicates a cutter blade held in a frame 32 so as to be slidable in and out. The cutter blade 31 is connected to a movable operation member 33, and the movable operation member 33 is slid in an arrow direction. Thus, the tip end side is taken in and out. Reference numeral 34 denotes a positioning / fixing portion 34 for temporarily stopping and fixing the movable operation member 33. The movable operation member 33 is locked at any position of the positioning / fixing portion 34. The blade edge of the cutter blade 31 is projected from the desired amount frame 32 and is fixed at that position.

[0004]

[Problems to be solved by the device]

 However, in the conventional cutter as described above, the tip end side of the cutter blade 31 is often left out of the frame body 32 even when the cutter blade 31 is not actually used for cutting while using the cutter. However, there is a risk that the cutter blade 31 may be touched by hand and an unexpected situation may occur. In addition, once the tip side of the cutter blade 31 is removed from the frame 32, the cutter blade 31 remains fixed at that position, but during work involving the use of a cutter, for example, when the operator is conscious of cutting work. If you move to anything other than the above, you may temporarily forget that the cutting edge of the cutter blade 1 is protruding. In such a case, the above-mentioned unexpected situation is likely to occur.

The present invention focuses on such a problem, and aims to greatly improve the safety in use by making a simple improvement in a cutter blade insertion / retraction type cutter that is widely used. To aim.

[0006]

[Means for Solving the Problems]

 A cutter according to the present invention for this purpose includes a cutter blade, a frame for holding the cutter blade in a retractable manner, a cutter blade that is connected to the cutter blade, and engages with the frame body so as to be relatively movable. In a cutter equipped with a movable operation part for taking in and out and fixing the cutter blade at a predetermined position, a cover member that covers the cutter blade and opens the blade tip side of the cutter blade on the tip side of the frame body from which the cutter blade projects. Is provided, and the cover member is urged toward the cutting edge side so as to be movable toward the opposite cutting edge side of the cutter blade.

[0007]

[Action]

 In such a cutter, the movable operation portion is moved during use and is locked by the positioning and fixing portion, so that the tip end side of the cutter blade is moved out of the frame by a desired amount. The tip of the frame on the protruding side of the cutter blade is provided with a cover member with the blade edge side of the cutter blade open, and the entire blade edge of the protruding cutter blade is covered by the cover member.

During an actual cutting operation, the open side of the cover member is pressed against the object to be cut, and by further pressing the cutter in that direction, the cover member that is urged toward the cutting edge side moves to the opposite cutting edge side. Since the blade tip of the cutter blade is relatively exposed to the side of the object to be cut from the cover member, the cutting edge is brought into contact with the cutting surface, and the cutting operation is performed.

When the cover member is separated from the cutting surface, the cover member urged toward the blade tip side is moved in the opposite direction to the above, that is, toward the blade tip side, and the blade tip of the cutter blade (or the exposed blade edge) is exposed again. The entire cutter blade protruding from the frame) is covered by the cover member.

Therefore, except during the actual cutting work, since the cutter blade protruding outside the frame body, in particular, the blade tip thereof is covered by the cover member, occurrence of the above-mentioned unexpected situation is prevented.

[0011]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 1 to 3 show the construction of a cutter according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a cutter blade that is slidably held in the frame body 2, and reference numeral 3 denotes a movable blade (slidingly) provided in the frame body 2 so as to be movable relative to the frame body 2. The operation part (movable operation member) is shown. The cutter blade 1 is connected to the movable operating member 3 via the connecting portion 5, and the tip end portion is inserted and removed by moving the movable operating member 3 in the arrow direction.

Reference numeral 6 denotes a cover member provided at the tip of the frame body 2 on the protruding side of the cutter blade 1. The cover member 6 is opened at the cutting edge 7 side of the cutter blade 1 and It is urged toward the cutting edge 7 side so as to be movable toward the cutting edge side, for example, by a tension spring 10 (FIG. 2). In this embodiment, the cover member 6 is rotatably supported by the frame body 2 via the bolts and nuts 21. The material of the cover member 6 is not particularly limited, and can be appropriately configured by a transparent, semi-transparent or opaque plastic sheet or metal plate.

Reference numeral 8 denotes a positioning / fixing portion for temporarily stopping and fixing the movable operation portion 3, and 20 in FIG. 3 denotes an object to be cut. Reference numeral 9 indicates a stopper provided at the tip of the cover member 6 in the cutter blade inserting / removing direction, and the stopper 9 prevents the protruding cutter blade 1 from protruding from the cover member 6. Can be locked.

In the cutter configured as described above, the movable operating member 3 is locked at any position of the positioning / fixing portion 8 so that the cutter blade 1 is projected from the desired amount frame 2. , Fixed in that position.

Since the cover member 6 is provided at the tip of the frame body 2 from which the cutter blade 1 projects, the cutter blade 1 projected as shown in FIG. 2 is entirely covered by the cover member 6.

When the cover member 6 is pressed against the cut object 20 during an actual cutting operation, as shown in FIG. 3, the tension spring 10 urging the cover member 6 is stretched, and the cutter blade 1 is cut. Since the bolt and the nut 21 are rotated toward the side opposite to the cutting edge, the cutting edge 7 of the cutter blade 1 and the cut object 20 come into contact with each other. The cutting work can be performed in this state.

Once the cover member 6 is separated from the surface of the cut object 20, the cover member 6 is moved in the opposite direction from the above, that is, the cutter blade 1 by the restoring force of the tension spring 10 urging the cover member 6. It rotates toward the blade tip 7 side, and as shown in FIG. 2 again, is returned to a position that covers the entire cutter blade 1 protruding from the frame body 2.

Therefore, except during the actual cutting work, the cutter blade 1 protruding to the outside of the frame body 2 is always covered with the cover member 6, and when the operator's consciousness shifts to something other than the cutting work. It is possible to prevent unexpected situations that are likely to occur.

[0019]

[Effect of device]

 As described above, in the cutter of the present invention, the cover member opened to the blade tip side of the cutter blade can be moved to the opposite blade tip side of the cutter blade so as to cover the cutter blade portion protruding from the frame body. Since it is urged, the cutter blade protruding from the frame can be covered with the cover member at all times except during the actual cutting work, and the cutting edge portion required for cutting is also in effect during the actual cutting work. It is also possible to expose only the part and cover the remaining part with a cover member. Therefore, the safety of the cutter is greatly improved by a simple modification.

[Brief description of drawings]

FIG. 1 is a plan view of a cutter according to an embodiment of the present invention.

FIG. 2 is an enlarged partial plan view of the rear side of the cutter shown in FIG.

FIG. 3 is a partial side view showing a state when the cutter of FIG. 1 is used.

FIG. 4 is a plan view of a conventional cutter.

[Explanation of symbols]

 1 Cutter Blade 2 Frame 3 Movable Operation Member 5 Connection Part 6 Cover Member 7 Blade Edge 8 Positioning / Fixing Part 9 Stopper 10 Tension Spring 20 Cut Object 21 Bolts and Nuts

Claims (4)

[Scope of utility model registration request] 1. A cutter blade, a frame for holding the cutter blade so that it can be taken out and in, a frame that is connected to the cutter blade and engages with the frame so as to be relatively movable, and puts the cutter blade in and out at a predetermined position. In a cutter provided with a movable operation part for fixing the cutter blade with, a tip of the frame body from which the cutter blade projects is provided with a cover member that covers the cutter blade and is open on the blade tip side of the cutter blade. A cutter characterized in that a member is urged toward the cutting edge side so as to be movable to the opposite cutting edge side of the cutter blade. 2. The cutter according to claim 1, wherein the cover member is rotatably provided. 3. The cutter according to claim 1, wherein the cover member is biased by a spring. 4. The cutter according to claim 1, wherein a stopper for locking the cutter blade is provided at a tip end portion of the cover member in the cutter blade withdrawing and inserting direction.