JPH06351U - Belt cutter - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a belt cutter that allows both push-cut type and pull-cut type to be used, and one of which is preferred by the operator. [Structure] A safety body that encloses the protruding end of the blade protruding from the handle includes a push-cut guide portion that faces the front of the handle and a pull-cut guide portion that faces the rear of the handle, and the blade faces the push-cut guide portion. This is a configuration including a front blade and a rear blade that faces the pulling cutting guide portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutter for cutting a belt such as a load-tightening belt that is fastened by being wrapped around a packaged item or a heavy item.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, a packing belt is stretched over packed items, heavy items, and the like, and the belt is fastened in a tightened state for use in the transportation of loads. When the load is heavy, such a load-locking belt is composed of a wide fabric belt, which is fastened to the outer circumference of the load by a load-locking machine equipped with a ratchet mechanism, and both ends of the belt are not loosened by buckle metal fittings. To be fixed as. If the load is relatively light, it is made up of a tape-shaped resin belt with a narrow width, which is generally called a PP band, and either end of the belt is welded or fastened to the outer periphery of the load while being tightened. Is fixed using.

Therefore, when cutting the belt in order to release the load, a cutting knife, scissors or the like has been conventionally used. In other words, the present situation is that an operator carries such a knife or scissors to cut the belt as needed.

[0004]

[Problems to be solved by the device]

 As is well known, knives and scissors expose the blade during use, and thus have a problem of lacking safety. For example, if the operator accidentally grips the blade with the blade exposed, he or she will be easily injured. Generally, knives and scissors have sharp blade tips, so that there is a risk of piercing a human body or the like if used incorrectly.

By the way, in order to cut the above-mentioned load-locking belt, it is not always necessary to use a cutter such as a cutting knife or scissors that exposes the entire blade, but a special cutter that allows only a part of the blade to function. Can be used. In that case, the danger as described above can be avoided by adopting a safety structure that prevents the fingers from directly touching the blade.

With respect to this point, the present inventor has provided a safety body that extends from the handle and covers the projecting end of the blade with respect to the blade protruding from the handle, and through this safety body, there is a risk of injury accident or the like. The present invention is conceived of a cutter that prevents the belt from being guided by the guide portion by forming a guide portion that guides the belt toward the blade and allowing the blade of the blade to face the guide portion. Came to.

Therefore, as a result of repeating the test for the worker to embody this idea, as a result, a so-called push-cut type that cuts the belt while pushing the handle forward, and a so-called push-cut type that pulls the handle backward to cut the belt It was found that the so-called pull-off type and the type of preference differ depending on the operator. And according to this test, in many cases, workers who prefer one type (for example, pull-cut type) feel that it is extremely difficult to use the other type (for example, push-cut type). It has been found.

Therefore, an object of the present invention is to enable both the push-cut type and the pull-cut type as described above to be used in combination, and a belt cutter configured so that an operator can freely select one type. Is in the point of providing.

[0009]

[Means for Solving the Problems]

 Therefore, in order to solve the above-mentioned problems, the present invention is configured as a first means, in that a blade protruding from a handle and a safety body extending from the handle and covering the protruding end of the blade are provided. In the provided cutter, the safety body includes a push-cut guide portion that faces the front of the handle and a pull-cut guide portion that faces the rear of the handle, and the blade includes a front blade facing the push-cut guide portion and a pull blade. It is equipped with a rear blade that faces the cutting guide.

Further, the present invention is configured as a second means, and is provided with a circular blade whose peripheral portion is partially projected from the handle, and a safety body which encloses the protruding end of the blade. In the cutter having a slide guide surface on the bottom surface of the safety body, the safety body includes a connecting portion that is located in the radial direction of the circular blade and extends from the handle, and a push-cut guide portion that extends from the tip of the connecting portion toward the front of the handle. The cutting tool includes a pulling guide portion that faces the rear of the handle, and the blade includes a blade facing the push-cutting guide portion as a front blade and a blade facing the pulling guide portion as a trailing blade.

Further, the present invention is configured as a third means, and is provided with a circular blade whose peripheral portion is partially projected from the handle, and a safety body which encloses the protruding end of the blade. In the cutter having a slide guide surface on the bottom surface of the safety body, the safety body includes a connecting portion that is located in the radial direction of the circular blade and extends from the handle, and a push-cut guide portion that extends from the tip of the connecting portion toward the front of the handle. The cutting tool is provided with a pulling guide portion facing the rear of the handle, and the blade comprises a blade facing the push-cutting guide portion as a front blade, and a blade facing the pulling guide portion as a trailing blade. The angle A formed between the push-cut guide surface and the handle longitudinal axis constitutes the push-cut guide surface formed on the bottom surface of the push-cut guide portion and the pull-cut guide surface formed on the bottom surface of the pull-cut guide portion. On the other hand, the angle a formed between the pulling guide surface and the longitudinal axis of the handle is a <A.

[0012]

【Example】

 An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, a handle 1 is made of synthetic resin, and has a handle 2 that is gripped in the palm of an operator and a head 3 that has a cutting function to be described later. Have.

The grip handle 2 has an uneven edge 4 corresponding to the fingers of an operator who holds the handle at the lower edge, and a hanging hole 5 is opened at the tail end of the grip handle 2. Although not shown, the grip handle 2 is formed in a tapered shape so that the wall thickness gradually increases from the portion near the head 3 to the tail end.

As shown in FIG. 2, the head 3 is provided with a blade receiving recess 6 having an opening 6 a at its lower edge and is provided with a recess on one side, and a blade 7 is mounted in the blade receiving recess 6.

In the illustrated embodiment, the blade 7 constitutes a disk-shaped circular blade, and the blade 8 is formed on the entire periphery. Correspondingly, the blade receiving recess 6 is formed into a circular shape with the opening 6a by cutting off a part thereof, and a state in which the circular blade 7 is fitted in the blade receiving recess 6 Then, a part of the blade 7 is projected from the open portion 6a.

A pressing member 9 is provided to fix the blade 7 in the blade receiving recess 6. The pressing member 9 is for sandwiching the blade 7 between the bottom surface of the blade receiving recess 6 and the pressing member 9, and is fitted into the blade receiving recess 6 together with the blade 7. Therefore, the pressing member 9 is a thin plate-like member formed in a shape corresponding to the peripheral edge of the blade receiving recess 6, and the pressing member 9 and the center of the blade 7 and the blade receiving recess 6 are aligned with each other. The mounting holes 10, 11, 12 are each formed in a penetrating shape, and these three members are fastened with a bolt 13 and a nut 14.

Preferably, as shown in FIG. 2, the outer peripheral edge of the pressing member 9 and the inner peripheral edge of the blade receiving recess 6 are mutually disposed so that the pressing member 9 does not freely rotate in the blade receiving recess 6. The uneven fitting portions 15 and 16 are formed.

Further, the blade 7 is non-rotatably fixed to the blade receiving recess 6 in a normal state, but in order to effectively use the circular blade 8, it is rotated by loosening the bolt 13 and the nut 14. The mounting hole 11 of the blade 7 is movable so that when the blade 7 is rotated by a predetermined angle, it can be fitted into the protrusions 17 provided at equal intervals in the circumferential direction on the neck portion of the bolt 13. Notches 18 are formed at equal intervals in the circumferential direction.

Under such a configuration, as shown in FIG. 1, a safety body 19 for covering the protruding end of the blade 7 is provided. In this embodiment, as shown in FIG. 2, the safety body 19 is divided into a half body including a division piece 19a provided on the head portion 3 of the handle and a division piece 19b provided on the holding member 9. Then, the safety body 19 is formed by superposing the divided pieces 19a and 19b in a palm shape. Therefore, the split pieces 19a, 19b are provided with recesses 20a, 20b for wrapping the projecting ends of the blade 7 from both sides, and the recesses 20a, 20b are overlapped to form a housing 20 for housing the projecting ends of the blade 7. Constitute.

The pair of divided pieces 19a, 19b are connected to the head 3 and the pressing member 9 via connecting pieces 21a, 21b extending in the radial direction of the cutting tool 7, respectively. The connecting portion 21 of the safety body 19 formed by superimposing 19b is composed of both superposed connecting pieces 21a and 21b.

The safety body 19 thus constructed has a slide guide surface 22 formed on the bottom surface of the safety body 19 as shown in FIG. 1 to be conveniently used as a slide guide when a cutter is used.

In order to use both the push-cut type and the pull-cut type described above, the safety body 19 includes a push-cut guide portion 23 extending from the tip of the connecting portion 21 toward the front of the handle 1 and a tip of the connecting portion 21. The pull-out guide portion 24 facing the rear of the handle 1 is integrally formed. The projecting portion of the blade 7 constitutes a front blade 8a located forward of the connecting portion 21 and facing the push-cut guide portion 23, and a rear blade 8b located rearward of the connecting portion 21 and facing the pull-cut guide portion 24. .

The slide guide surface 22 constitutes a push-cut guide surface 22 a formed on the bottom surface of the push-cut guide portion 23 and a pull-cut guide surface 22 b formed on the bottom surface of the pull-cut guide portion 24. As shown in FIGS. 3 (A) and 3 (B), the angle a formed by the pull-cut guide surface 22b and the handle longitudinal axis C with respect to the angle A formed by the push-cut guide surface 22a and the handle longitudinal axis C is defined as a < Configured as A.

The push-cut guide portion 23 has a sharp insertion guide surface 23a that is inclined from the free end to the front blade 8a.

On the other hand, the cutting guide portion 24 has a sharp insertion guide surface 24a that is inclined from the free end toward the trailing blade 8b, but is substantially parallel to the cutting guide surface 22b from the insertion guide surface 24a. And a belt introduction surface 24b reaching the trailing blade 8b.

When cutting the belt tightened on the outer circumference of the load by using the cutter having such a structure, the following two methods can be arbitrarily selected.

The first is a pull-off type as shown in FIG. Generally speaking, in the case of a saw, for example, the push-cut type saw is common in Europe and the US, while the cut-off type saw is common in Japan, so in Japan, the pull-cut type saw is used. It is thought to be familiar with the type.

In this cut-off type cutting method, with the grip handle 2 of the handle 1 being held, the insertion guide surface 24a of the cut-off guide portion 24 is inserted inside the belt 26 tightened around the load. . That is, when the sharp end of the pull-off guide portion 24 is inserted between the belt 26 and the load 25 and the handle 1 is pulled toward you (in the direction of the arrow in the drawing), the belt 26 is lifted along the insertion guide surface 24a. Further, when the handle 1 is strongly pulled in the direction of the arrow in the figure, the belt introducing surface 24b slides on the back surface of the belt 26, and the belt 26 is cut by the trailing blade 8b.

At the time of this cutting, as described above, the angle a formed by the cutting guide surface 22b and the handle longitudinal axis C is as small as possible, that is, the drawing guide surface 22b and the axis C are as small as possible. It is configured to be substantially parallel to each other. In other words, the angle a exists only for the purpose of preventing the fingers holding the grip handle 2 from contacting the surface of the load 25, and it is desirable that the angle a is originally parallel. With this configuration, the force F for pulling the grip handle 2 becomes parallel to the surface of the load 25 and does not escape above the load 25. The belt 26 can be slid along the surface of the load 25 to smoothly cut the belt 26.

In other words, if the longitudinal axis C of the handle 1 is set to be considerably larger than the angle a with the pulling guide surface 22b along the surface of the load 25, that is, If the longitudinal axis C is formed so as to face upward toward the tail end direction of the handle 2, since the direction of the pulling force F of the handle 2 is upward, the operator pulls the handle 1 closer. When the belt 26 is pulled, the pulling guide surface 22b is unlikely to slide in the horizontal direction along the surface of the load 25, and the pulling guide surface 22b easily floats from the surface of the load 25. When the cut-out guide surface 22b is pulled up from the surface of the load 25 in this way, the belt 26 is smoothly pulled by the trailing blade 8b simply by pulling the belt 26 upward by the insertion guide surface 24a or the belt introduction surface 24b. It becomes difficult to cut into.

On the other hand, according to the above-mentioned configuration of the present invention, since the direction of the force F pulling the grip handle 2 is substantially parallel to the surface of the load 25, the insertion guide surface 24 a is placed below the belt 26. The belt 26 can be easily inserted into the side, and the belt 26 can be smoothly cut by the trailing blade 8b as it is along the belt introducing surface 24b.

The second belt cutting method is a push-cutting type as shown in FIG. 3 (B), and in this case, the push-cutting guide surface 22 a of the push-cutting guide portion 23 is along the surface of the load 25. Then, the insertion guide surface 23a of the push-cut guide portion 23 is inserted into the inside of the belt 26 tightened on the outer circumference of the load. That is, when the sharp end of the push-cut guide portion 23 is inserted between the belt 26 and the load 25 and the handle 1 is pushed forward (in the direction of the arrow in the drawing), the belt 26 is lifted along the insertion guide surface 23a. . Further, when the handle 1 is strongly pushed in the direction of the arrow shown, the belt 26 can be smoothly cut by the front blade 8a following the insertion guide surface 23a.

At the time of this push-cutting, as described above, the angle A formed by the push-cutting guide surface 22a and the handle longitudinal axis C is sufficiently large, that is, the push-cutting guide surface 22a extends along the surface of the load 25. In this state, the longitudinal axis C is tilted upward toward the tail end of the handle 1. Therefore, the operator only has to push the handle along the longitudinal axis C, and in this case, the component force generated by the pushing force of the worker causes the push-cut guide portion 23 to advance along the surface of the load 25. The handle 1 includes the forward force F1 and the pressing force F2 that presses the push-cut guide portion 23 against the surface of the load 25, so that the handle 1 does not lift the push-cut guide surface 22a from the load 25 and moves it to the surface of the load 25. The belt 26 can be slid along and moved forward, and the front blade 8a can smoothly cut the belt 26.

[0035]

[Effect of device]

 According to the present invention as set forth in claim 1, since the projecting end of the blade 7 projecting from the handle 1 is covered with the safety body 19 extending from the handle 1, it is safe to carry and handle the cutter. The safety body 19 is used to form a guide portion for guiding the belt toward the blade 7, and the blade of the blade is exposed to the guide portion, so that the belt is guided to the guide portion. It can be easily and easily cut. In particular, in the present invention, the guide portion constituted by the safety body 19 is provided with a push-cut guide portion 23 that faces the front of the handle 1 and a pull-cut guide portion 24 that faces the rear of the handle 1, so that the blade 7 pushes Since the front blade 8a facing the cutting guide portion 23 and the rear blade 8b facing the pulling guide portion 24 are provided, a so-called push-cut type for cutting the belt while pushing the handle forward, while pulling the handle backward, It is possible to use both types of so-called pulling type that can cut the belt, and one of the types that the operator likes can be arbitrarily selected.

According to the present invention as set forth in claim 2, in addition to the above effect, the blade 7 is constituted by a circular blade, and the front blade 8a is formed by a part of the blade 8 formed on the periphery of the blade 7. Also, since the rear blade 8b is configured, not only can both blades 8a and 8b be formed by a single blade 7, but if the blades 8a and 8b are worn, the circular blade 7 can be rotated. By shifting and fixing the positions, the unused portion of the circular blade 8 can be reconfigured to form the front blade 8a and the rear blade 8b, and there is an effect that good sharpness can be maintained.

According to the present invention as set forth in claim 3, in addition to the above-mentioned effect, the handle 1 is set in a posture substantially parallel to the surface of the load in the method of using the pull-cut type. The belt can be smoothly cut by pulling and moving the cutter while sliding the cutting guide surface 22b along the surface of the load without floating the surface. On the other hand, regarding the method of using the push-cut type, since the handle 1 is in the posture facing the surface of the load, this allows the cutter to move forward while pressing the push-cut guide surface 22a against the surface of the load, and It has the effect of enabling smooth cutting.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is an exploded front view showing an embodiment of the present invention.

FIG. 3 shows the operation of one embodiment of the present invention, (A) is a front view showing the operation of cutting the belt based on the pull-cut type usage method, and (B) is the push-cut type usage method. It is a front view which shows the effect | action which cuts a belt based.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 handle 2 grip handle 3 head 6 blade receiving concave portion 6a open portion 7 knife 8 circular blade 8a front blade 8b rear blade 9 holding member 19 safety body 19a split piece 19b split piece 20 accommodating section 21 connecting section 21a connecting piece 21b connecting piece 22 slide guide surface 22a push-cut guide surface 22b pull-cut guide surface 23 push-cut guide portion 23a insertion guide surface 24 pull-cut guide portion 24a insertion guide surface 24c belt introduction surface 25 load 26 belt

Claims (3)

[Scope of utility model registration request] 1. A cutter comprising a blade protruding from a handle and a safety body extending from the handle and covering a protruding end of the blade, wherein the safety body includes a push-cut guide portion directed forward of the handle. A belt cutter comprising a pulling guide portion facing rearward of the handle, wherein the blade includes a front blade facing the push cutting guide portion and a rear blade facing the pulling guide portion. 2. A cutter comprising a circular blade having a peripheral portion partially projected from a handle and a safety body encapsulating the protruding end of the blade, wherein the bottom surface of the safety body has a slide guide surface. The safety body includes a connecting portion that is located in the radial direction of the circular blade and extends from the handle, a push-cut guide portion that extends from the tip of the connecting portion toward the front of the handle, and a pull-out guide portion that extends toward the rear of the handle. The belt cutter is characterized in that the blade facing the push-cut guide portion constitutes a front blade and the blade facing the pull-cut guide portion constitutes a rear blade. 3. A cutter comprising a circular blade having a peripheral edge partly projected from a handle and a safety body encapsulating a protruding end of the blade, wherein a slide guide surface is formed on a bottom surface of the safety body. The safety body includes a connecting portion that is located in the radial direction of the circular blade and extends from the handle, a push-cut guide portion that extends from the tip of the connecting portion toward the front of the handle, and a pull-out guide portion that extends toward the rear of the handle. Is a rear blade formed by the blade facing the push-cut guide portion, and a rear blade is formed by the blade facing the pull-cut guide portion, and the slide guide surface is a push-cut guide formed on the bottom surface of the push-cut guide portion. Surface and a cutting guide surface formed on the bottom surface of the cutting guide part, and an angle formed by the cutting guide surface and the handle longitudinal axis with respect to an angle A formed by the push cutting guide surface and the handle longitudinal axis. A belt cutter, wherein a is configured such that a <A.