JP3045924U - Chopsticks - Google Patents

Abstract

(57) [Summary] [Object] To provide a disposable chopstick that forms a smooth separation surface that does not generate lateral tears and does not generate shaving burrs when torn during use. [Constitution] A pair of legs divided into two parts by a slit extending from the tip of the split chopstick body toward the tail end, and a trunk formed from the end of the slit to the tail end of the split chopstick body and connecting both legs. In the disposable chopsticks, a pair of guide grooves are formed on at least one of the upper and lower surfaces of the trunk portion on both left and right sides of the extension of the slit, respectively, and extend in parallel with the extension.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to disposable chopsticks, and more particularly to disposable chopsticks configured to be suitably disassembled when used.

[0002]

[Prior art]

 As shown in FIG. 3 (A), a conventionally-known disposable chopstick has a pair of left and right halves divided by a slit 2 extending from the tip of the wooden disposable chopstick body 1 to the tail end thereof, which extends from the tip of the wooden disposable chopstick body 1 to the tail end. And a trunk 5 formed from the end 4 of the slit 2 to the tail end of the disposable chopstick body 1 and connecting the legs 3, 3 (first conventional example). . Therefore, when the user uses the chopsticks at a dining table or the like, if the user grips the pair of legs 3 and 3 and separates them in the direction away from each other, the trunk 5 is torn from the end 4 of the slit 2 and FIG. As shown in (B), two chopsticks 6, 6 are formed.

[0003] In this regard, the grain and fibers of the chopstick main body 1 are generally arranged in the axial direction of the slit 2, so that when the pair of legs 3, 3 is gripped and separated from each other, The torso 5 can be easily torn. However, when the torso 5 is torn, the torn portion 7 of the torso 5 is often deflected from the axis of the slit 2 as shown in FIG. There is a danger that shaving burrs will be generated and stuck on the user's fingers. When the direction of the grain or the fiber is largely deviated with respect to the axis of the slit 2, as shown by a chain line in FIG. Therefore, there is a problem that the use of chopsticks is hindered.

In order to solve the above-mentioned problem, the present applicant has previously proposed a disposable chopstick having a single guide groove 8 as shown in FIG. 4A (utility model registration No. 302 9156). , Second conventional example).

[0005]

[Problems to be solved by the invention]

 According to the second conventional example, as shown in FIG. 4 (B), when a user uses a disposable chopstick at a dining table or the like, the user grasps the pair of legs 3, 3 and pulls them apart from each other. The torso 5 is torn along the guide groove 8 from the end 4 of the slit 2, and the torsion of the torso 5 is performed while being guided by the guide groove 8. And a smooth separation surface free of shaving burrs and the like can be formed.

However, according to the inventor's intensive research, even in the disposable chopsticks provided with one guide groove 8 extending from the terminal end 4 of the slit 2 as in the second conventional example, a pair of leg portions 3 is provided. It has been found that if the members 3 and 3 are separated at random, the phenomenon that the trunk 5 is torn beyond the guide groove 8 (lateral tearing) as shown in FIG. 4C cannot be completely prevented. According to the results of the experiment, when the grain or fibers of the disposable chopstick main body 1 continue from the end 4 of the slit 2 toward the guide groove 8, tear the trunk 5 from the end 4 of the slit 2 toward the guide groove 8. However, if the grain or fibers of the disposable chopstick main body 1 are arranged in a direction oblique to the guide groove 8 from the end 4 of the slit 2, the tear from the end 4 of the slit 2 immediately enters the guide groove 8. Without this, it goes in the direction deviating from the guide groove 8.

In this regard, if the guide groove 8 is formed deeply and the strength of the wood between the end 4 of the slit 2 and the guide groove 8 is intentionally reduced, the above-described lateral tear phenomenon can be prevented. In this case, the guide groove 8 is easily separated when the disposable chopsticks are subjected to an external force at various stages before the formed disposable chopsticks are supplied to the market as a product, for example, at the time of packing or laminating and transporting the product. Will be attributed to defective products.

Such unintended separation of the guide groove 8 is particularly remarkable in a Genroku type disposable chopstick having a V-shaped groove in the body portion, and a cutting step in which the guide groove 8 is further formed at the bottom of the V-shaped groove. There is a high risk that the trunk 5 will be separated during the process, and the yield is extremely poor.

[0009]

[Means for Solving the Problems]

 The inventor of the present invention has proposed a case in which the wood grain or the fiber is oriented in such a direction as to leave the guide groove 8 from the end 4 of the slit 2 even if the guide groove 8 connected to the end 4 of the slit 2 is provided as in the second conventional example. In consideration of the fact that the intended purpose cannot always be attained, as a result of intensive research, to prevent the lateral tearing phenomenon, it is necessary to form the guide groove at a position deviated to both sides from the end of the slit. I have found it advantageous. In other words, the cause of the horizontal tearing phenomenon is that the grain or fiber extends in a direction oblique to the axis of the trunk, so even if a guide groove is provided so as to continue to the end of the slit, it will occur from the end of the slit. Lateral tears grow in the direction away from the guide groove before entering the guide groove. Therefore, rather, rather than letting the lateral tear start naturally at the end of the slit, and providing a guide groove in the part that reliably receives the growing lateral tear, it promises that the lateral tear will enter the guide groove, Therefore, the direction can be controlled along the guide groove.

In addition, if the guide groove is formed at a position deviated to both sides from the extension of the slit as described above, the guide groove may be easily separated by an external force or the like as described above. Therefore, it is possible to provide a disposable chopstick which is easy to manufacture and has a deep guide groove.

Therefore, the present invention is configured as means by a pair of legs divided into two sides by a slit extending from the tip of the disposable chopstick body toward the tail end, and a tail of the disposable chopstick body from the end of the slit. In a disposable chopstick having an upper end and a lower end, which is formed at an end and connects both legs, the upper and lower surfaces of the split end are provided on at least one of left and right sides of an extension line of the slit. The point is that a pair of guide grooves extending parallel to the line is formed.

[0012] At this time, the pair of guide grooves are provided with a start end overlappingly positioned on both sides of the end of the slit, an intermediate portion extending from the start end toward the tail end of the trunk, It is desirable to have a tail end opening at the tail end face.

[0013]

[Embodiment of the invention]

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

As shown in FIG. 1A, a wooden disposable chopstick main body 11 has a pair of legs 13, 13 divided into two parts by a slit 12 extending from the tip to the tail end, and a slit 12. And a torso portion 15 formed from the end 14 of the body to the tail end of the chopstick main body 11 and connecting the legs 13, 13 in the same manner as the conventionally known disposable chopsticks. The material of the disposable chopstick body 11 may be any material as long as it is made of birch, white yang, poplar, cypress, cedar, bamboo, or other wooden material.

Meanwhile, the body portion 15 has a pair of guide grooves 18, 18 extending on the left and right sides of the extension of the slit 12 in parallel with the extension, respectively. In the illustrated example, the guide grooves 18, 18 are provided on the upper surface of the body portion 15, but may be provided on the lower surface, or may be provided on both upper and lower surfaces. In any case, as shown in an enlarged view in FIG. 2A, each of the pair of guide grooves 18 and 18 has a starting end portion 18a located on both sides of the terminal end 14 of the slit 12, and the starting end portion 18a. An intermediate portion 18b extending from the portion 18a toward the tail end of the trunk portion 15 and a terminal end portion 18c opening to the tail end surface of the trunk portion 15 are provided.

Therefore, when the user uses the disposable chopsticks at the dining table or the like, as in the related art, if the user grips the pair of legs 13 and separates them in directions away from each other, the trunk 15 is torn. As shown in FIG. 1B, two chopsticks 16, 16 are formed.

At this time, when the wood grain or fiber extends in a direction oblique to the axis of the body part 15, the tearing of the body part 15 occurs from the terminal end 14 of the slit 12, and the transverse direction toward the wood grain or fiber direction. Attempts to grow with tears. However, such a lateral tear is received by one of the pair of guide grooves 18 at the initial stage of the growth, and enters the guide groove 18 without fail. As a result, the tear portion 17 is formed in a straight line conforming to the guide groove 18 and forms a smooth separation surface free of shaving burrs and the like.

The operation of receiving the lateral tear generated from the terminal end 14 of the slit 12 by the guide groove 18 and allowing the guide groove 18 to enter the guide groove 18 is such that the pair of guide grooves 18, 18 are not on the extension of the slit 12 but on the line. It is extremely reliable if the configuration is formed by deviating to the left and right sides of the extension line and the configuration is formed such that the start end 18a of each guide groove 18 overlaps both ends of the end 14 of the slit 12. In other words, if the lateral tear caused by the grain or fiber direction grows to the right of the trunk portion 15, it is received by the right guide groove 18 and enters, and conversely, the lateral tear is directed to the trunk portion 15. If it grows to the left, it is received by the left guide groove 18 and enters. Then, the tear along the guide groove 18 is controlled so as to be straight toward the terminal end portion 18c which is open to the tail end surface of the body portion 15.

The present invention can be applied to all types of disposable chopsticks such as conventionally known oval disposable chopsticks and Genroku disposable chopsticks.

FIG. 2 (B) shows an embodiment of an oval chopstick. The body 15 of the chopstick main body 11 has upper and lower surfaces formed as flat surfaces. Therefore, the guide grooves 18 are provided in at least one of the flat upper and lower surfaces in a cut shape.

FIG. 2 (C) shows an embodiment of the Genroku type chopstick, in which the body 15 of the chopstick body 11 has a decorative groove 19 having a substantially V-shaped cross section extending on an extension of the slit 12 on the upper and lower surfaces. doing. Therefore, the guide grooves 18, 18 are provided on at least one of the upper and lower surfaces of the body portion 15 at both sides of the decorative groove 19, and are provided in a cut shape. Therefore, when the guide groove 18 is formed at the bottom of the decorative groove 19 as in the above-mentioned second conventional example, the guide groove 18 is formed shallow so that the body 15 is not accidentally separated by external force or the like. In contrast, according to the present embodiment, as shown in FIG. 2C, the guide groove 18 can be formed as deep as necessary.

FIG. 2A shows a jig 20 for forming the guide grooves 18. The jig 20 has a slidable ruler surface 21 on one of the upper and lower surfaces of the disposable chopstick main body 1 and a pair of parallel cutting blades 22 protruding from the ruler surface 21. . Therefore, the ruler surface 21 of the jig 20 is brought into contact with one surface of the disposable chopstick main body 11 having the slit 12 manufactured by the conventional method, and the jig 20 and the disposable chopstick main body 11 are moved in the longitudinal direction of the slit 12. By sliding, a pair of guide grooves 18 are formed. The formation of the guide groove 18 by such a jig 20 may be performed manually by hand, but it is also possible to mechanically automate the disposable chopstick body 11 while transporting it by a conveyor.

[0023]

[Effect of the invention]

 According to the present invention, at least one of the upper and lower surfaces of the torso 15 extends parallel to the left and right sides of the extension of the slit 12 with respect to the torso 15 of the chopstick main body 11. Since the pair of guide grooves 18 are formed, when the user uses the disposable chopsticks at a dining table or the like, when the user grips the pair of legs 13 and separates them in directions away from each other, the slit 12 is formed. Since the tear generated from the terminal end 14 of the body 15 enters one of the guide grooves 18, the torso 15 is torn along the guide groove 18, and a lateral tear toward the side of the torso 15 can be prevented. In addition, a smooth separation surface without shavings can be formed.

In particular, according to the present invention, since the pair of guide grooves 18, 18 are provided on the left and right sides of the extension of the slit 12, the grain or the fiber obliquely intersects the axis of the body 15. Thus, while allowing the tendency of the lateral tearing in the natural direction from the end 14 of the slit 12 once, it can be immediately received by one of the guide grooves 18 in the initial stage of the lateral tearing growth. This is extremely excellent in that the lateral tear is surely made to enter the guide groove 18, and after the entry, the tear direction is suitably controlled by the guide groove 18 to enable a straight tear.

[Brief description of the drawings]

1A and 1B show an embodiment of the present invention, wherein FIG. 1A is a perspective view showing a disposable chopstick before use, and FIG. 1B is a perspective view showing the disposable chopstick when a torso is used.

FIG. 2 is an enlarged view of an embodiment of the present invention;
(A) is a perspective view showing a jig and disposable chopsticks side by side, (B) is an enlarged sectional view of an embodiment in which a guide groove is provided on an oval disposable chopstick,
(C) is an enlarged sectional view of the embodiment in which a guide groove is provided in Genroku type chopsticks.

FIGS. 3A and 3B show a first conventional example, in which FIG. 3A is a perspective view showing a disposable chopstick before use, and FIG.

4A and 4B show a second conventional example, in which FIG. 4A is a perspective view showing a disposable chopstick before use, and FIG.
FIG. 7C is a perspective view showing an example, and FIG. 7C is a perspective view showing another example when the body is torn.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Split chopstick main body 12 Slit 13 Leg 14 End of slit 15 Body 17 Tearing 18 Guide groove 18a Starting end 18b Intermediate part 18c Ending

Claims (2)

[Utility model registration claims] 1. A pair of legs divided into two parts by a slit extending from the tip of the chopstick body toward the tail end thereof, and a pair of legs formed from the end of the slit to the tail end of the chopstick body and connecting the two legs together. In a disposable chopstick having a body part having a flat lower surface, at least one of upper and lower surfaces of the body part is formed with a pair of guide grooves extending in parallel with the extension line on both left and right sides of the extension line of the slit. Disposable chopsticks characterized by being made. 2. A start end portion in which the pair of guide grooves overlap each other at both ends of a slit, an intermediate portion extending from the start end portion toward a tail end of the trunk, and a tail end surface of the trunk. The disposable chopstick according to claim 1, further comprising a terminal end that opens to the end.