KR20040016483A - A practice sword of sword play - Google Patents

Abstract

PURPOSE: Provided are a sword for practicing fencing and a manufacturing method thereof, to suppress fatigue of the wrist and muscle by minimizing air resistance generated during swing or hitting, to prevent damage of sword bodies due to a gap between the sword bodies by integrating the sword bodies formed of different materials in a formation space, and to ensure safety by forming the blade, tip and back of the sword using a synthetic resin without a danger of injuries. CONSTITUTION: The sword for practicing fencing comprises: a metal body inserted into a formation space(10c) formed between upper and lower molds(10a,10b), forming left and right leaf-blades(22,24); and a synthetic resin body integrally formed with the metal body. A resin insertion hole(10d) is formed at one end of a top surface of the upper mold(10a) to be led to the formation space(10c), and an air exhaust hole(10e) is formed at the other end of the top surface of the upper mold(10a) to exhaust air in the formation space(10c) to the outside.

Description

Practice drawing for kendo and its manufacturing method {A PRACTICE SWORD OF SWORD PLAY}

The present invention relates to a practice diagram that can be used for kendo training in kendo tubes, etc. More specifically, blades and knives are made of synthetic resins made of synthetic resins with blades and knives. By combining the left and right side ropes in the kendo training, the kendo exercise and the manufacturing method for the kendo training have the same friction sound and weight as the sword at the same time as it prevents warpage from side to side or damage due to the impact (shock). It is about.

In general, the type of sword-storing type knife widely used has a genre separate from the form of kendo competition and sword sword using bamboo sword and wooden sword as a class of kendo, but such bamboo sword It is used as a form of real kendo that can infer the form of genuine kendo kendo, which is the source of the kendo match.

Korean swordsmanship, or Japanese, Chinese, and European swordsmanship are highly sensitive to the depth and value of the Kendo spirit, which is highly elaborated in each field. It is a weapon.

Therefore, during the kendo training, a space swing is repeated several times per hour on average every day, at a speed of 100-200 km / sec. In other words, if you are a beginner or intermediate person, you will be repeated 1000-2000 times, and if you are an advanced person or leader, you will not be able to practice more than three hours. In particular, he trains or teaches the sword or sword of the kendo close to 6000 times.

The shape of the practice figure composed of synthetic resin material which is widely used in recent years is a sheath type, and the technical effects of the foot and lead are possible, and economical possession is possible. Due to the inferior mechanical properties such as strength, toughness, elastic modulus, such a degree of practice of the synthetic resin had a problem that the warp bent left and right by the blow during training.

Thus, conventionally, a practice diagram for kendo has been proposed as a domestic utility model registration No. 0277031 as a solution for this problem. Kendo practice diagram 1 of the publication is a blade (4a, 4b) made of a synthetic resin that is formed in the longitudinal direction of the fitting groove (2) on the inner side as opposed to each other, as shown in Figs. It consists of the metal piece 6 which has a predetermined length fitted in the said fitting groove 2 in the longitudinal direction.

That is, the said metal piece 6 is formed in the plate shape which has a fixed length in proportion to the length of a blade.

In addition, the blade body (4a, 4b) is formed by molding the synthetic resin in a relative shape with the fitting groove (2) in the longitudinal direction on the inner side, which is the one side of the blade body (4a) is applied to the adhesive on the inner surface After the metal piece 6 is inserted into the fitting groove 2, the blade 4b on the other side is faced to each other and bonded.

However, the conventional kendo practice diagram 1 configured as described above has a blade caused by the impact of the blades colliding with each other during kendo training by embedding the metal 6 in the longitudinal direction inside the blade bodies 4a and 4b made of synthetic resin. It can be prevented from bending to the left and right, but there is a problem in that the feeling of pulverization is lowered because a light friction sound such as a gum is not generated by the dull friction sound of the synthetic resin.

In addition, the kendo practice drawing (1) has a structure in which an adhesive is applied when embedding the metal (6) in the longitudinal direction in the longitudinal direction into the fitting grooves (2) in the blade bodies (4a, 4b) made of synthetic resin. There was also a problem in that it can not be used for a long time as the bonding gap between the blades (4a, 4b) and the metal (6) made of synthetic resins of different properties due to repeated hitting each other during the kendo training is relaxed.

In addition, the practice diagram for kendo (1) has a central axis part in the inner direction of the knife and a lattice part in the outer direction of the knife so as to be independent of general conditions such as physique, taste, and preferences of practitioners. Because it is a structure without a center of gravity of the trainees, the trainees cannot overcome the air shock repulsion (resistance) that occurs during swings and strikes that are repeated quickly for training, giving excessive fatigue to wrist joints and muscles, and straightness and inertia. There was a problem that the sense of the moment is lowered.

Therefore, the present invention has been made in order to solve the above problems, the object of the present invention is to prevent the bending of the practice from side to side due to the strike during the kendo training, as well as to increase the sense of vibration by a light friction sound, such as the real gum It is to provide a practice diagram for kendo and a method of manufacturing the same to prevent long-term use of the practice by preventing damage caused by loosening of the bonding gap between the synthetic resin and the metal having different characteristics due to the impact.

Another purpose is to set the weight lower as it moves from the central axis of the dosin to the lattice, thereby minimizing the air resistance generated during the swing and striking of the exercise diagram, thereby reducing the fatigue of the wrist and muscles. In addition to minimizing, of course, to provide a kendo practice diagram and a manufacturing method that gives a sense of weight and straightness and moment of inertia, such as the real gum.

The kendo practice diagram according to the present invention made to achieve the above object is a blade, a knife, and the end of the blade formed by injection molding in the metal space to form the left and right leafs and the molding space of the upper and lower molds It characterized in that the solidification of the synthetic resin is integrally combined with the metal wire that is first inserted into the molding space when the solidification during the solidification.

The metal suspension is integrally welded by a plurality of interval holding pieces which are distributed at predetermined intervals along the longitudinal direction with respect to the center of the inner surface of the left and right leaflets facing each other.

The plurality of gap retaining pieces are distributed so that the volume is smaller in the section of the grating section than the section of the central shaft section so that the center of gravity of the grating section in the blade outward direction is lower than that of the central shaft section in the blade inner direction of the metal blade. .

The metal wires and the resin wires are each made so that the outer boundary surfaces abutting each other are on the same extension line.

Method of producing a practice diagram for kendo according to the present invention is to cut the metal plate to a predetermined thickness and length to form a left and right leaf and a plurality of gap retaining pieces, between the cut left leaf and right leaf Welding the spacing pieces together with each other so that the volume of the grid section is smaller than that of the central axis section of the knife, and inserting the welded metal rod into the molding space formed in the upper and lower molds; Injecting a liquid synthetic resin into the molding space to solidify the body of the synthetic resin having a blade, a knife, and the end of the blade and to solidify so as to be integrally combined with the metal coating; Simultaneous surface polishing and polishing process simultaneously with the drawing, and assembling a bag on the bezel part of the drawing made of synthetic resin and the drawing made of metal Characterized in that consisting of steps.

1 is a perspective view showing a combined view of a conventional synthetic resin,

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a schematic cross-sectional view for explaining the manufacturing method of the practice diagram according to the present invention;

FIG. 4 is an exploded perspective view showing the metal metallic elongation inserted into the molding space of the injection mold according to the present invention and combined with a synthetic resin;

Figure 5 is a perspective view showing a practice produced in Figure 4,

6 is a cross-sectional view taken along line B-B of FIG. 4;

7a and 7b is a schematic diagram showing the type of practice in contact with each other by attack and defense during kendo training,

8 is a block diagram showing a manufacturing method of a practice diagram for kendo according to the present invention.

Explanation of symbols on the main parts of the drawings

10a, 10b: upper and lower mold 10c: molding space

10d: resin injection hole 10e: air discharge hole

20: Metal foot 22,24: Left and right lobs

26: spacing maintenance 30: escape of synthetic resin

30a: blade 30b: knife back

30c: blade tip L1: central axis

L2: Lattice

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 to 6, the practice diagram for kendo training according to the present invention is inserted into the molding space portion 10c of the upper and lower molds (10a, 10b) to the left and right lobs (22, 24) The metal blade 20 to be formed and the blade 30a, the knife back 30b and the blade tip 30c are formed by injection molding in the molding space portion 10c, and then first formed in the molding space portion 10c during solidification. It consists of a synthetic resin conductive material 30 which is integrally combined with the metallic conductive material 20 which is inserted and waiting.

At this time, the upper mold (10a) is detachably installed from the lower mold (10b), the upper surface side is connected to the molding space portion (10c) and the passage is connected to the resin injection to inject a liquid synthetic resin during injection molding A hole 10d is formed, and on the other side of the upper surface thereof, the molding space part 10c and a passage are connected to each other, and an air discharge hole 10e is formed to discharge air in the molding space part 10c to the outside during injection molding. .

The molding space portion 10c has a center of a corresponding surface where the upper mold 10a and the lower mold 10b contact each other so that the upper mold 10a and the lower mold 10b have the same volume as the outer shape of the knife when the upper mold 10a and the lower mold 10b are joined together. They are formed symmetrically on top of each other.

As shown in FIG. 4, the metal suspension 20 is distributed in a predetermined interval along the longitudinal direction with respect to the center of the inner surface of the left leaf 22 and the right leaf 24 facing each other. The plurality of gap holding pieces 26 are integrally welded by the holding piece 26, and the plurality of gap holding pieces 26 are in the blade outward direction than the central axis part L1 in the blade inward direction of the metal drawing 20. The distribution center is formed to have a smaller volume in the section of the grid portion (L2) than the section of the central axis portion (L1) so that the center of gravity of the.

Said metal 20 and synthetic resin 30 are comprised so that the outer boundary surfaces which contact each other may mutually extend on the same extension line.

The practice diagram for the kendo according to the present invention configured as described above, the right leafy 24 is in close contact with the lower surface of the molding space portion 10c side of the upper mold (10a) as shown in FIG. When the metal suspension 20 is laid down so as to be in close contact with the upper surface of the molding space portion 10c of the c), the liquid synthetic resin is injected through the resin injection hole 10d formed at one side of the upper mold 10a. This liquid synthetic resin fills the space of the molding space portion 10c and discharges the air of the molding space portion 10c to the air discharge hole 10e formed on the other side of the upper surface of the upper mold 10a.

At this time, the liquid synthetic resin filled in the molding space portion 10c is intimately adhered to the remaining surfaces except for the surface where the metal dosin 20 and the molding space portion 10c are in contact with the surfaces of the left and right foliates 22 and 24. While being bonded to each other, while penetrating between the plurality of gap retaining pieces (26) connecting the left lobs 22 and the right lobs (24) by welding, it is closely adhered to the surface of the plurality of gap retaining pieces (26) In this state, when a certain time has elapsed, the liquid synthetic resin is gradually solidified so that the metal rod 20 and the synthetic resin 30 are bonded to each other and integrated.

That is, when the drawing 30 of the synthetic resin finished injection molding in the molding space portion 10c of the upper and lower molds 10a and 10b is separated from the upper and lower molds 10a and 10b, FIGS. Similarly, the left and right leaflets 22 and 24 made of metal of different materials are exposed to the outside on the left and right sides of the synthetic resin drawing 30 having the blade 30a, the blade back 30b, and the blade tip 30c. It will keep the overall outline of the knife.

In addition, the plurality of gap retaining pieces 26 which are not exposed to the outside of the synthetic resin pulley 30 are more in the central axis part L1 side section so that the central axis part L1 of the knife is heavier than the lattice part L2. Because it is set to a large volume, it minimizes the air resistance generated during the swing and hitting of the exercise chart, thereby minimizing the fatigue of the wrist and muscles, and gives a sense of weight, straightness, and moment of inertia, such as a physical examination. It can be.

In addition, since the insulator 30 made of synthetic resin and the insulator 20 made of metal having different properties (physical properties) are integrally coupled in the molding space portion 10c of the upper and lower molds 10a and 10b, they are blown. The breakage caused by the loosening of the coupling gap between the resin 30 of the synthetic resin and the metal 20 of the metal 20 can be prevented in advance.

And, since the blade 30a, the blade back 30b and the blade tip 30c are formed of synthetic resin, and the left and right lobs 22 and 24 are formed of metal, the degree of practice is due to the blow during the kendo training. Can be prevented from bending to the left and right, while the left and right lobs (22, 24) made of metal to increase the sense of vibration while making a light rubbing sound, such as a real gum when hitting in the form of attack and defense as shown in Figs. 7a and 7b Will be.

In addition, since the blade 30a, the blade 30b, and the blade tip 30c are molded of synthetic resin, safety accidents can be minimized during kendo training. Anyone can possess it.

Next, the method of manufacturing a practice diagram for kendo according to the present invention, as shown in Figure 8 by cutting the metal plate to a predetermined thickness and length to the left and right leaf blades (22, 24) and a plurality of gap retaining pieces (26) Forming (S1), a plurality of gap retaining pieces 26 between the left leaf 22 and the right leaf 24 cut in step 1 of the grid portion (L2) section than the central axis portion (L1) section of the knife After welding (S2) to each other through the distribution so as to have a small volume, the welded metal suspension 20 is inserted into the molding space portion 10c formed in the upper and lower molds 10a and 10b (S3).

Then, a liquid synthetic resin is injected into the molding space portion 10c to form a synthetic resin rod 30 having a blade 30a, a knife back 30b, and a blade tip 30c, and at the same time, a metal rod 20 After solidification (S4) to be integrally combined with the), the combination of the solidified metal island 20 and the synthetic resin island 30 is separated from the upper and lower molds 10a and 10b.

In addition, after simultaneously polishing the surface (S5) of the solidified synthetic resin strip (30) and the metallic strip (20) separated on the upper and lower molds (10a, 10b) and at the same time (S5), While assembling (S6) a known bag (not shown) separately manufactured on a tuft (30) and a metal rope (20) of a metal gun (20), a well-known leather strap or the like not shown on the outer circumferential surface of the bag is closely packed. Wrap up to complete all assembly.

As described above, the practice diagram for the kendo and the manufacturing method thereof according to the present invention are blades, knives, etc., and the blade tip portion is made of synthetic resin, and the leafy portion is made of metal. Since the weight of the grid is set lower than that of the central axis,

First, by minimizing the air resistance generated during the swing and hitting of the exercise can minimize the fatigue of the wrist and muscles, there is an effect that gives a sense of weight and straightness and moment of inertia, such as the exam.

Second, there is an effect that can prevent the breakage caused by the loosening of the coupling gap between the synthetic resin and the metal coating when hitting.

Third, it is possible to prevent the bending of the practice degree to the left and right by batting during the kendo training, and to enhance the feeling of vibration while making a light friction sound like a real sword when the metal fence of metal strikes in the form of attack and defense. There is.

Fourth, safety accidents can be minimized during kendo training, and in particular, not only can not be converted to a killing weapon, but anyone can possess it without permission to carry it.

Claims (5)

A metal fence 20 forming the left and right leafs 22 and 24, In the molding space portion 10c of the upper and lower molds 10a and 10b, a blade 30a, a knife back 30b, and a blade tip 30c are formed by injection molding, and are first inserted into the molding space portion 10c during solidification. Practice for kendo, characterized in that made of a synthetic resin resin dog 30 is integrally coupled with the metal wire dog 20 is waiting. The method of claim 1, The metal suspension 20 is distributed by a plurality of gap retaining pieces 26 interposed at predetermined intervals along the longitudinal direction with respect to the center of the inner surface of the left leaf 22 and the right leaf 24 facing each other. Kendo practice diagram, characterized in that welded integrally. The method of claim 2, The plurality of gap retaining pieces 26 have a central axis portion L1 such that the center of gravity of the lattice portion L2 in the blade outward direction is lower than the central axis portion L1 in the blade inner direction of the metal blade 20. Practice for kendo, characterized in that the distribution is formed so that the volume is smaller in the section of the grid portion (L2) than the section. The method of claim 1, The metal dosin 20 and the synthetic resin dosin 30 is a kendo practice diagram, characterized in that each made so that the outer boundary surface in contact with each other on the same extension line. Cutting the metal plate to a predetermined thickness and length to form left and right leaf blades 22 and 24 and a plurality of gap retaining pieces 26; Between the cut left leaf 22 and the right leaf 24, a plurality of spacing pieces 26 are distributed so that the volume of the grid portion (L2) section smaller than the central axis portion (L1) section of the knife through each other Welding step, Inserting the welded metal wire 20 into a molding space portion 10c formed in the upper and lower molds 10a and 10b; A liquid synthetic resin is injected into the molding space portion 10c to form a synthetic resin rod 30 having a blade 30a, a knife back 30b, and a blade tip 30c, and at the same time, a metal rope 20 and Solidifying to be integrally coupled; Simultaneously polishing the surface of the solidified synthetic resin drawing 30 and the metal drawing 20, simultaneously with polishing; The method of manufacturing a practice diagram for kendo, characterized in that it comprises the step of assembling the bag portion of the dosin (30) made of synthetic resin and the dosin (20) made of metal.