JP2013500795A - Chopsticks for learning - Google Patents

Abstract

  In the chopsticks including the upper chopstick member (10) and the lower chopstick member (20), the lower chopstick member (20) is not in direct contact with the fixing device (131) and above the front surface of the lower chopstick member (20). A thumb ergonomics device (133) is provided which is secured to the device. The thumb ergonomic device (133) is arcuate and the opening is generally directed to the tip (28) of the chopsticks. When holding the chopsticks, the opening of the ergonomic device (133) contacts the lower chopstick member (20). The thumb and the lower chopstick member (20) are held in an accurate relative position by contacting a portion of the thumb that is not on the scale.

Description

  The present invention relates to chopsticks for learning how to hold chopsticks, and more particularly to an ergonomic apparatus used for chopsticks, and a hinge for connecting chopsticks.

  Chinese have a 3,000-year history of eating with chopsticks. The chopsticks (FIG. 1) are composed of a columnar upper chopstick member 10 and a lower chopstick member 20. The tip 18 of the upper chopstick member and the tip 28 of the lower chopstick member are used to sandwich food. In the upper chopstick member and the lower chopstick member, one surface contacting the thumb is the front surface 11, 21 (FIG. 1), the upper surface 12, 22 is the upper surface, the one surface contacting the index finger is the rear surface 13, 23 (FIG. 2), and The lower surface (not shown) is called the bottom surface.

  However, the specific shape of the chopsticks is not limited to a quadrilateral, and may be a polygon, a circle, an ellipse, or the like. The side of the thumb near the ribs of the forearm of the hand is called the thumb heel side (33, FIG. 1), and the side of the thumb near the ulna of the forearm of the hand is called the thumb side of the thumb (34).

  The exact posture with chopsticks is shown in FIG. When holding the chopsticks, the first phalange 36 on the ring finger receives and supports the lower chopstick member, and the lower and lower positions 38 of the third phalanx on the index finger are in contact with the back of the lower chopstick member and on the thumb. The second phalanx 32 holds the front surface of the lower chopstick member, and the three parts stably hold the lower chopstick member. The lower chopstick member and the hand part are fixed to each other and cannot move. On the other hand, the upper chopstick member 10 is movable, and the first phalanx on the index finger and the first phalanx on the middle finger open and close up and down with a position relatively close to the chopstick head on the upper chopstick member. Then, the upper chopstick member is opened or closed with respect to the lower chopstick member. The first phalanx 31 of the thumb presses the front surface of the upper chopstick member and serves as a fulcrum for the upper chopstick member. Both phalanxes of the thumb do not move relative to the lower chopstick member.

  The thumb phalanx is the only part of the hand that holds the front of the two chopsticks. For this reason, it is very important to maintain the exact position and orientation of the thumb. Since both thumb phalanxes are fixed and do not move with respect to the lower chopstick member, the ergonomic device used for the thumb guides the relative position for fixing the thumb phalanx member and the lower chopstick member. Should.

  Some auxiliary chopsticks have already existed. These ergonomic devices (such as a ditch or thumb insertion hole) for the thumb of a chopstick are mounted on the lower chopstick member body and can guide the thumb portion that is not in direct contact with the lower chopstick member. Can not.

  For example, Patent Document 1 discloses a kind of learning chopsticks, and Patent Document 2 also discloses a similar kind of chopstick holding device. The principle of these chopsticks is to provide, on the surfaces of two chopsticks, a recessed area that matches the shape of the finger for guiding the finger holding the chopsticks. The disadvantage is that these recesses are on the chopsticks themselves and are not ergonomic devices protruding from the chopsticks themselves, so these learning chopsticks can only guide the part where the finger contacts the chopsticks themselves, and the fingers do not contact the chopsticks directly The site cannot be guided.

  Further, for example, Patent Document 3 discloses a kind of learning chopsticks. A thumb insertion hole is provided in the lower chopstick member of the learning chopsticks. The disadvantage is that the thumb insertion hole of the chopstick is in the main body of the lower chopstick member, and it is impossible to guide the thumb position where it does not directly contact the lower chopstick member, for example, the first phalanx of the thumb.

  A difficulty that a beginner tends to have when holding chopsticks is that the relative position between the thumb and the third phalanx of the index finger cannot be easily grasped, and the posture with chopsticks is distorted (FIG. 3). When holding the chopsticks correctly (FIG. 1), the thumb presses the front surface of the lower chopstick member, and the lower portion of the third phalanx and the position 38 below the index finger press the back surface of the lower chopstick member. That is, the thumb and the third phalanx of the index finger face each other on both sides of the lower chopstick member. However, their distance from the tip 28 of the lower chopstick member is different and the thumb is closer to the tip 28 of the lower chopstick member than the third phalanx of the index finger. It is difficult for beginners with chopsticks to grasp this distinction, and beginners are easily misunderstood that they face each other directly. Due to this misunderstanding, the thumb is tilted toward the chopstick head 29 of the lower chopstick member, the third phalanx of the index finger is tilted toward the tip 28 of the lower chopstick member, and the thumb is mistakenly brought too close to the third phalanx of the index finger. (FIG. 3) The overall posture of holding the chopsticks is completely deformed, and the chopsticks cannot be held accurately.

  In order to prevent this problem from occurring, by guiding the thumb and the third phalanx of the index finger at the same time, the posture of holding the chopsticks is maintained without changing the exact relative position and distance between the phalanges of these two fingers. Need to train beginners. However, in order to achieve the above training effect, it is necessary to guide the phalanx of these two fingers simultaneously.

  There have been several tools in the past to help you hold chopsticks. One of these tools is equipped with an ergonomic device for guiding the position of the thumb. Another is an ergonomic device for guiding the third phalanx of the index finger. However, since all of these aids do not guide these two finger segments simultaneously, beginners can be trained to accurately maintain the distance between the thumb and the third segment of the index finger. Can not.

  For example, in Patent Document 4 in which the name of the invention is “auxiliary tool for chopsticks”, a pair of learning chopsticks is disclosed. The disadvantage is that only the lower part of the index finger can be guided, and the thumb is not guided to hold the lower chopstick member in the correct direction and position.

  Further, for example, in the kind of learning chopsticks disclosed in Patent Document 3, a thumb insertion hole for guiding the thumb is provided in the lower chopstick member. The disadvantage is that no guide device for the third phalanx of the index finger is provided.

  As can be seen from the above instruments, the conventional learning chopsticks guide only the thumb or the third phalanx of the index finger and do not guide the phalanges of these two fingers simultaneously. Therefore, such products of the existing technology cannot effectively train beginners so that the posture with chopsticks is not deformed while maintaining the relative position and distance between the thumb and the third phalanx of the index finger (see FIG. 3).

  Further, some existing learning tools for holding chopsticks are provided with hinges that connect the upper chopstick member and the lower chopstick member (for example, Patent Documents 3 and 4). These hinges can be opened and closed in only one direction, preventing distortion problems when beginners hold chopsticks, but they make the beginners dependent on the hinges and make sure that each muscle of the hand moves correctly so that the chopsticks can be opened and closed correctly. Cannot train coordination.

US Pat. No. 5,277,464 Chinese Utility Model No. CN87205972U International Publication No. 2003/015589 JP 2005-177183 A

  The present invention is used to assist the user in learning how to hold chopsticks accurately as shown in FIG. For this purpose, the present invention learns to maintain a posture with an accurate chopstick as shown in FIGS. 1 and 2 by guiding the third phalanx of the thumb and / or forefinger using an ergonomic device. Provide learning chopsticks to train workers. The present invention also provides a movable chopstick hinge that trains the hand muscles to control the precise opening and closing of the chopsticks.

  One form of the present invention provides a thumb ergonomic device for use with chopsticks for guiding the thumb to be held in the correct position. The thumb ergonomic device is fixedly connected to the lower chopstick member by a fixing device (for example, a pillar) so as to guide the relative fixing position between the thumb and the lower chopstick member, and the thumb ergonomic device and the lower chopsticks are connected. The member is indirectly fixed. This thumb ergonomic device is characterized in that its main body does not directly contact the lower chopstick member, but is fixed to the lower chopstick member by a fixing device. Since the thumb ergonomic device does not directly contact the lower chopstick member, it is possible to guide the position where the thumb does not directly contact the lower chopstick member.

  In contrast, an ergonomic apparatus (for example, a thumb insertion hole provided in Patent Document 3) directly attached to an existing lower chopstick member can guide the thumb only at a position in direct contact with the lower chopstick member. Therefore, the present invention can more effectively guide the position and direction of the thumb.

  The present invention includes one arcuate thumb ergonomic device used on the thumb side of the thumb (FIGS. 5 and 6), the thumb ergonomic device positioned above the front surface of the lower chopstick member, For example, it is fixed to the lower chopstick member 20 by a pillar 131, FIG. This ergonomic device is in contact with only the thumb side of the thumb and does not guide both sides of the thumb simultaneously, so it is relatively difficult for beginners to grasp. However, it is suitable for a learner at a certain level to intensively train one side of the thumb, and the weight is relatively light. This thumb ergonomic device is located between the upper chopstick member and the lower chopstick member depending on the height of the fixing device (FIG. 5), located in front of the upper chopstick member (FIG. 6), or the upper chopstick member. Can be covered simultaneously with the position between the two chopstick members (FIG. 7). Furthermore, in order to expand the covering area, the ergonomic device is designed to reach the front surface of the lower chopstick member (FIG. 9) or beyond the front surface of the lower chopstick member (FIG. 10). An extending portion may be provided that extends to the side chopstick member to form an arcuate surface.

  In addition to one side, it may be formed as a semi-annular thumb ergonomic device in which thumb ergonomic devices (FIGS. 11 and 12) are configured on both the scale side and the heel side. This thumb ergonomic device is fixed above the front surface of the lower chopstick member by a fixing device, and is positioned between the upper chopstick member and the lower chopstick member by the height of the fixing device (FIG. 11). It may be located on the front of the member (FIG. 12) or simultaneously cover the front of the upper chopstick member and the position between the two chopstick members (not shown). Further, in order to enlarge the covering range, the thumb ergonomic device is made to reach the front surface of the lower chopstick member (FIG. 13) or beyond the front surface of the lower chopstick member (FIGS. 14 and 15). The extended part can be expanded to form a semi-cylinder. Alternatively, the shank-side and heel-side thumb ergonomic devices are positioned in front of the upper chopstick member and separated by a gap (FIG. 41), and the thumb directly contacts the upper chopstick member through the gap, so that the learner The exact position of the member can be touched.

  Further, by adding an additional member (111, FIG. 18), the semi-annular thumb ergonomic device may be changed to an annular thumb ergonomic device. The annular thumb ergonomic device is fixed above the front surface of the lower chopstick member by a fixing device, and is positioned between the upper chopstick member and the lower chopstick member by the height of the fixing device (FIG. 18). It may be located on the front surface of the chopstick member (not shown), or simultaneously cover the front surface of the upper chopstick member and the position between the two chopstick members (not shown). Furthermore, in order to expand the coverage and make it more suitable for beginner use, it should reach the front of the lower chopstick member (FIG. 19) or cross the front of the lower chopstick member (FIG. 20). By extending the extension, the annular thumb ergonomic device can be formed into a cylindrical shape.

  In order to prevent the upper chopstick member and the lower chopstick member from being too close to each other, a stopper (145, FIG. 12) can be provided on the back of the ergonomic device or its fixing device.

  In order to prevent the bias of the thumb, a convex portion can be added directly to the front surface of the upper chopstick member and / or the lower chopstick member (FIG. 21).

  The first convex portion (201, FIG. 21) is provided on the thumb scale side on the front surface of the upper chopstick member so as to guide the thumb scale side, at a position from the chopstick head of the upper chopstick member. .

  The second convex portion (202, FIG. 21) is provided on the thumb heel side on the front surface of the upper chopstick member and at a position from the tip of the upper chopstick member so as to guide the thumb heel side.

  The third convex portion (203, FIG. 21) is provided on the thumb scale side on the front surface of the lower chopstick member and at a position from the chopstick head of the lower chopstick member so as to guide the thumb scale side. ing.

  The fourth convex portion (204, FIG. 21) is provided on the heel side of the thumb on the front surface of the lower chopstick member and at a position from the tip of the lower chopstick member so as to guide the heel side of the thumb. Since the 1st convex part and the 2nd convex part are separated comparatively far from the lower part of a thumb, the direction of a thumb can be guided more easily. The third convex portion is located on the thumb scale side of the lower chopstick member, and can prevent distortion when holding the chopstick by tilting the thumb toward the chopstick head of the lower chopstick member (FIG. 3).

  Four protrusions can be provided simultaneously (FIG. 21), but only one, two, or three arbitrarily selected may be provided to reduce weight. For example, for learners whose thumb is always biased toward the scale, use chopsticks with only the first and / or third projection so that the learner's thumb scale is trained intensively. Is preferred.

  In order to increase the coverage on the thumb scale side, the third protrusion can extend beyond the lower chopstick member (FIG. 22). Similarly, the fourth protrusion may extend beyond the lower chopstick member to increase the coverage of the thumb heel side (FIG. 23).

  In another embodiment of the present invention, the finger pad of the third phalanx of the index finger provided on the back surface 23 of the lower chopstick member is guided to prevent the phalanx from being too close to the tip of the lower chopstick member. An index finger human body engineering device is provided (FIGS. 24-27).

  The index finger human body engineering device (60, FIG. 24) is a protrusion protruding from the back surface of the lower chopstick member, and is provided on the back surface 23 of the lower chopstick member, and fits to the lower part of the third phalanx of the index finger. The lower portion is prevented from being too close to the tip of the lower chopstick member.

  A first slope 61 (FIG. 25) can be provided on the protrusion 60. The first inclined surface is inclined toward the tip of the lower chopstick member and toward the upper chopstick member so as to match the finger pad of the third phalanx of the index finger.

  A second slope 62 (FIG. 26) can be provided on the protrusion 60. The second slope is inclined toward the tip of the lower chopstick member and in a direction away from the upper chopstick member so as to match the lower joint of the third phalanx in the index finger.

  This protrusion can be connected to the lower chopstick member by a single column 63 between the upper and lower chopstick members (FIG. 27).

  In another aspect of the present invention, a chopstick provided with two ergonomic devices at the same time is provided. That is, the first ergonomic device is used to guide the exact position of the thumb scale side, and the second ergonomic device guides the accurate position of the third phalanx finger pad on the index finger. Used for.

  These two ergonomic devices function simultaneously and are trained to maintain the proper relative position and distance between the thumb and the third phalanx of the index finger, and are accurate with chopsticks as shown in FIGS. By holding the posture, the posture holding the chopsticks is distorted (FIG. 3).

  Since the present invention does not limit the specific structure and attachment method of these two ergonomic devices, any chopsticks equipped with the two ergonomic devices may be used. However, these two ergonomic devices need to be provided on the same pair of chopsticks.

  The thumb and the third phalanx of the index finger are adjacent phalanxes, and the phalanges of these two fingers apply forces in different directions and have a certain distance from each other. If these two finger phalanges are guided so that they are in the correct position, they guide the entire palm in the correct position and direction, so that each phalanx connected to the palm is in the correct position. It can be placed easily and is a great help for those who learn how to hold chopsticks. This function is unique to the present invention.

  In all the above chopsticks, the two chopsticks may or may not be connected by a hinge.

  With existing chopsticks, it has already been devised to attach a hinge. As shown in FIG. 28, the existing hinge used for the chopsticks includes a C-shaped member 93 provided on the lower chopstick member, and a through hole 90 and a pivot 91 provided on the upper chopstick member. Based on this type of existing hinge, the present invention designed one new type of hinge (FIG. 29). Since the diameter of the pivot is intentionally made smaller than the inner diameter of the C-shaped member so that the C-shaped member is loosely fitted to the pivot, the tip of the upper chopstick member moves around the pivot toward the upper side and the lower side. Not only can it rotate, but it can also rotate around the pivot so that it moves slightly towards the front or back at the same time. The advantage is that learners can no longer rely on hinges to prevent distortion when holding chopsticks (shown in Fig. 3). Learners have the opportunity to train hand muscle coordination.

  The embodiments of the present invention can be better understood with reference to the drawings. These drawings are provided to illustrate the invention and the invention is not limited to the specific structure and arrangement shown in the drawings.

Fig. 5 shows a front of the correct posture with chopsticks used in the description of the invention. Fig. 5 shows the back side of the correct posture with chopsticks used in the description of the invention. This shows the distortion of the posture with chopsticks due to the thumb approaching the third phalanx of the index finger too much. The thumb insertion hole provided in the front surface of the lower chopstick member is shown. An embodiment in which a thumb ergonomic device used on the scale side and an extending portion thereof are provided on a lower chopstick member is shown. An embodiment in which a thumb ergonomic device used on the scale side and an extending portion thereof are provided on a lower chopstick member is shown. An embodiment in which a thumb ergonomic device used on the scale side and an extending portion thereof are provided on a lower chopstick member is shown. An embodiment in which a thumb ergonomic device used on the scale side and an extending portion thereof are provided on a lower chopstick member is shown. An embodiment in which a thumb ergonomic device used on the scale side and an extending portion thereof are provided on a lower chopstick member is shown. An embodiment in which a thumb ergonomic device used on the scale side and an extending portion thereof are provided on a lower chopstick member is shown. FIG. 6 shows an embodiment in which a semi-annular thumb ergonomic device and its extension are provided on the lower chopstick member. FIG. 6 shows an embodiment in which a semi-annular thumb ergonomic device and its extension are provided on the lower chopstick member. FIG. 6 shows an embodiment in which a semi-annular thumb ergonomic device and its extension are provided on the lower chopstick member. FIG. 6 shows an embodiment in which a semi-annular thumb ergonomic device and its extension are provided on the lower chopstick member. FIG. 6 shows an embodiment in which a semi-annular thumb ergonomic device and its extension are provided on the lower chopstick member. FIG. 6 shows an embodiment in which a semi-annular thumb ergonomic device and its extension are provided on the lower chopstick member. FIG. 6 shows an embodiment in which a semi-annular thumb ergonomic device and its extension are provided on the lower chopstick member. An embodiment is shown in which an annular thumb ergonomic device and its extension are provided on the lower chopstick member. An embodiment is shown in which an annular thumb ergonomic device and its extension are provided on the lower chopstick member. An embodiment is shown in which an annular thumb ergonomic device and its extension are provided on the lower chopstick member. The convex part provided in the front surface of the chopsticks is shown. An embodiment in which the third convex portion extends downward beyond the lower chopstick member is shown. An embodiment in which the fourth protrusion extends downward beyond the lower chopstick member is shown. The protrusion provided in the back surface of the lower chopstick member is shown. The protrusion provided in the back surface of the lower chopstick member and the 1st slope are shown. The protrusion provided in the back surface of the lower chopstick member, the 1st slope, and the 2nd slope are shown. Fig. 5 shows an embodiment in which the protrusion is connected to the lower chopstick member by one pillar. 1 illustrates one embodiment of a chopstick hinge. It is a top view of the hinge shown in FIG. 28, and shows the hinge for free chopsticks. Fig. 6 shows another embodiment chopstick hinge. 1 shows one specific embodiment with a hinge attached. 1 shows one specific embodiment with a hinge attached. 1 shows one specific embodiment with a hinge attached. 1 shows one specific embodiment with a hinge attached. 1 shows one specific embodiment without a hinge. 1 shows one specific embodiment without a hinge. 1 shows one specific embodiment without a hinge. Another specific embodiment is shown. Another specific embodiment is shown. 3 shows another ergonomic device embodiment. 3 shows another ergonomic device embodiment. Fig. 5 shows another embodiment in which a thumb ergonomic device and an index finger ergonomic device are provided.

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

  In the first embodiment (FIG. 5), one ergonomic device 133 used for the thumb is separated from the lower chopstick member 20 and is fixed above the front surface of the lower chopstick member by the fixing device 131 (one pillar). And it is located between the upper chopstick member and the lower chopstick member. This thumb ergonomic device is formed in an arc shape and its opening faces the tip 28 of the chopsticks to prevent the thumb scale side from over-biasing the chopstick head 29 of the lower chopstick member, as shown in FIG. Avoid distortion when holding chopsticks. Since the thumb ergonomic device is secured to the lower chopstick member, the thumb ergonomic device can be trained to hold the thumb in the correct relative position with the lower chopstick member. Further, since the thumb ergonomic device does not directly contact the lower chopstick member, the thumb ergonomic device provided on the lower chopstick member body, for example, the direction of the thumb is more effective than the insertion hole (88 in FIG. 4). Can be guided. FIG. 8 shows the situation of one hand holding a pair of chopsticks to which the thumb ergonomic apparatus of the first embodiment is attached in a posture with an accurate chopsticks. Since this embodiment guides only the thumb side of the thumb, it can assist the learner's practice at a certain level with respect to holding chopsticks.

  In the first embodiment, the fixing device is one pillar 131. However, the fixing device may have other shapes, for example, a single circular member (not shown), an artistic arcuate member (not shown), or other fixing device, and thumb ergonomics Any device that can reliably connect the apparatus to the lower chopstick member may be used.

  In the second embodiment (FIG. 6), the fixing member 131 is a single pillar. This pillar is relatively high, and the thumb ergonomic device is positioned in front of the upper chopstick member 10, and the distance between the thumb ergonomic device 133 and the lower chopstick member is increased, so that the direction of the thumb is more effective. Can be guided to.

  In the third embodiment (FIG. 7), since the thumb ergonomic device is relatively long, it exists at the same time on the front surface of the upper chopstick member and between the upper and lower chopstick members.

  In the fourth embodiment (FIG. 9), the thumb ergonomics device 133 is provided with a portion 135 extending to the lower chopstick member, and the portion 135 extends to reach the lower chopstick member so as to reduce the covering range. Increase.

  In the fifth embodiment (FIG. 10), the thumb ergonomic device 133 is provided with portions 135 and 137 extending to the lower chopstick member, extending beyond the lower chopstick member and increasing the coverage area. . However, since the weight increases correspondingly as the coverage increases, it is relatively suitable for use by learners with strong hand strength.

  In the sixth embodiment (FIG. 11), an arcuate thumb ergonomic device 103 is provided. The thumb ergonomics device 103 is fixed above the front surface of the lower chopstick member by a pillar 101 and is positioned between the upper chopstick member and the lower chopstick member, and an additional arc-shaped member 102 used on the heel side of the thumb. A semi-annular thumb ergonomic device is formed.

  In the seventh embodiment (FIG. 12), an arc-shaped thumb ergonomic device 143 is provided, and is fixed to the lower chopstick member by a pillar 141, and an additional arc-shaped member 142 that opens generally toward the chopstick head of the chopstick is provided. A semi-annular thumb ergonomic device is formed. Due to the relatively high post, this semi-annular thumb ergonomic device is located in front of the upper chopstick member.

  In the eighth embodiment (FIG. 13), the semicircular thumb ergonomic devices 102 and 103 are provided with extended portions 105 and 106. The extended portions 105 and 106 reach the front surface of the lower chopstick member and increase the contact range with the center of the thumb to improve the stability of holding the chopsticks. The extending portions 105 and 106 are integrally connected to the column 101.

  In the ninth embodiment (FIG. 14), the semi-annular thumb ergonomic devices 102 and 103 have extending portions 107 and 108 that extend so as to extend over the front surface of the lower chopstick member and are integrally connected to the pillar 101. Is provided.

  In the tenth embodiment (FIG. 15), the semi-annular thumb ergonomic devices 142, 143 are provided with extending portions that are located on the front surface of the upper chopstick member and extend beyond the front surface of the lower chopstick member. It has been. The pillar 141 is formed integrally with the extending portion.

  In an eleventh preferred embodiment (FIG. 16), the semi-annular thumb ergonomic devices 102, 103 each extend upward to reach the front surface of the upper chopstick member to form extended portions 104, 109. Increase the contact range of the thumb. As shown in FIG. 17, extension portions 107 and 108 to the lower chopstick member may be further provided.

  In the twelfth embodiment (FIG. 18), a semi-annular additional member 111 is added to the semi-circular ergonomic apparatus in the sixth embodiment (FIG. 11). Both ends of the additional component 111 are connected to both ends of the thumb ergonomic device to form an annular thumb ergonomic device.

  In the thirteenth embodiment (FIG. 19), the annular thumb ergonomic device in the twelfth embodiment is formed into a cylindrical shape extending to the lower chopstick member so as to reach the front surface of the lower chopstick member.

  In the fourteenth embodiment (FIG. 20), the annular thumb ergonomic device in the twelfth embodiment is formed in a cylindrical shape extending to the lower chopstick member so as to exceed the lower chopstick member.

  In the fifteenth embodiment (FIG. 12), a stopper 145 is provided on the back surface of the thumb ergonomic device or the fixing device to prevent the upper chopstick member and the lower chopstick member from being too close to each other.

  As shown in FIG. 21, a convex portion 201 for guiding the thumb side of the thumb is provided on the front surface of the upper chopstick member 10, and the front side of the upper chopstick member 10 is provided to guide the thumb side of the thumb. A convex portion 202 is provided on the front surface of the lower chopstick member 20, and a convex portion 203 for guiding the thumb scale side is provided on the front surface of the lower chopstick member 20. A convex portion 204 for guiding the heel side is provided.

  In order to reduce the weight, the two protrusions on the front surface of the upper chopstick member 10 in FIG. 21 can be reduced to one. In order to reduce the weight, the two protrusions on the front surface of the lower chopstick member 20 in FIG. 21 can be reduced to one. In order to reduce the weight, a convex portion can be provided only on the front surface of one chopstick.

  In FIG. 22, the convex part 203 of the lower chopstick member extends so as to exceed the lower chopstick member.

  In FIG. 23, the convex portion 204 of the lower chopstick member extends beyond the lower chopstick member.

  In the sixteenth embodiment (FIG. 24), a protrusion 60 protrudes from the back surface 23 of the lower chopstick member and hits the lower portion of the third phalanx of the index finger, and this lower portion approaches the tip (28) of the lower chopstick member. Prevent too much.

  A first inclined surface 61 can optionally be provided on the upper surface of the protrusion (FIG. 25). The first inclined surface is inclined toward the tip of the lower chopstick member and is directed toward the upper chopstick member so as to match the finger pad of the third phalanx in the lower chopstick member.

  Moreover, the 2nd slope 62 can be provided in the lower surface of this protrusion (FIG. 26). The second slope is inclined toward the tip of the lower chopstick member and in a direction away from the upper chopstick member so as to fit the joint of the lower part of the third phalanx in the lower chopstick member.

  As shown in FIG. 24, the protrusion 60 may protrude from the back surface of the lower chopstick member, or may be connected to the lower chopstick member by a single pillar between the upper chopstick member and the lower chopstick member. (FIG. 27). The lower end of the pillar is connected to the lower chopstick member, and the upper end extends between the upper chopstick member and the lower chopstick member and is connected to the protrusion. The protrusion guides the finger pad of the third phalanx in the index finger and protrudes from the back of the two chopsticks. Optionally, a thumb insertion hole can be added to the front surface of the lower chopstick member, or a thumb insertion hole can be provided to the front surface of the upper chopstick member. Alternatively, the first convex portion 201 can be optionally provided on the front surface of the upper chopstick member, and the third convex portion 203 can be provided on the front surface of the lower chopstick member.

  In the seventeenth embodiment (FIGS. 31 to 34), between the upper chopstick member and the lower chopstick member, the thumb-side human ergonomic device 103 (FIG. 31) and the extending portion 102 used on the heel side are provided. A semi-annular thumb ergonomic device is formed. It is provided with extending portions 107, 108 to the lower chopstick member that extend beyond the front surface of the lower chopstick member, increasing the coverage area in contact with the thumb. Further, the lower chopstick member in the present embodiment is provided with a C-shaped member 93 that is fitted to the pivot 91 of the upper chopstick member 10 and forms a hinge that connects the upper chopstick member and the lower chopstick member. In FIG. 32, the back surface of this embodiment is shown and the 1st slope 61 for guiding the 3rd phalanx of an index finger is provided in this back surface. The thumb ergonomic devices 102, 103 may be provided with upwardly extending portions 104, 109 as shown in FIG.

  As shown in FIG. 28, the hinge includes a hole 90 and a pivot 91 provided in the upper chopstick member and a C-shaped member 93 provided in the lower chopstick member and can be opened and closed in one direction. Further, as in the embodiment of the hinge shown in FIG. 29, the diameter of the pivot is made smaller than the inner diameter of the C-shaped member, and the upper chopstick member can be freely moved by loosely fitting the C-shaped member to the pivot. Alternatively, the learner may be trained to prevent the bias of the upper chopstick member by relying only on hand muscle coordination.

  In FIGS. 33 and 34, one hand for accurately grasping a pair of chopsticks of this embodiment is shown. In this embodiment, the thumb ergonomic device for guiding the thumb of the hand holding the chopsticks and the third phalanx of the index finger and the index finger ergonomic device are provided at the same time. It can be held at the target position (FIG. 33), and the distortion problem when holding the chopsticks shown in FIG. 3 can be prevented.

  The eighteenth embodiment (FIGS. 35 to 37) shows an embodiment in which no hinge is provided between two chopsticks. In FIG. 35, it is shown that the thumb ergonomic devices 102 and 103 are provided in front of the front surface of the lower chopstick member in the present embodiment, and 107 and 108 extending from the lower chopstick member. FIG. 36 shows that the bottom surface 24 of the lower chopstick member in the present embodiment is provided with a second slope 62 for guiding the lower joint of the third phalanx of the index finger. In FIG. 37, the back surface of this embodiment is shown, and the 1st slope 61 for guiding the finger pad of the 3rd phalanx of an index finger is provided in the back surface 23 of the lower chopstick member 20. FIG.

  In the nineteenth embodiment (FIGS. 38 to 39), FIG. 38 shows that the front face of the present embodiment is provided with the thumb ergonomic device as in the tenth embodiment (FIG. 15) and its extension. . In FIG. 39, the lower chopstick member in the present embodiment guides the projection 60 projecting on the back surface and the third phalanx of the index finger that is inclined from the projection to the tip of the lower chopstick member and toward the upper chopstick member. And a C-shaped member that fits into an upper chopstick member provided with a pivot (an upper chopstick member provided with a hole and a pivot as shown in FIG. 28). It is.

  FIG. 40 shows a twentieth embodiment, which includes a thumb-side human ergonomic device 143 and an additional arc-shaped member 142 used on the heel side of the thumb, and further extends to the lower chopstick member. A portion 148 is provided. A protrusion 60, a first slope 61, and / or a second slope 62 can optionally be further provided on the back surface of the lower chopstick member. Further, the lower chopstick member can be provided with a C-shaped member for fitting to a pivot installed on the upper chopstick member.

  FIG. 41 shows a twenty-first embodiment. In this embodiment, a thumb ergonomic device 153 is used on the shank side and is located on the front surface of the upper chopstick member, and a thumb is used on the heel side that is located on the front surface of the upper chopstick member. An ergonomic device 152 is included, and the two thumb ergonomic devices are fixed to the lower chopstick member by a fixing device 151. The thumb ergonomic device used on the heel side is generally opened toward the chopstick head so as to guide the heel side of the thumb. There is a gap between the thumb ergonomic device used on the scale side and the thumb ergonomic device used on the heel side to expose the front surface 11 of the upper chopstick member, and the thumb can touch the position of the upper chopstick member.

  A hinge can be optionally added to the chopsticks in the present invention. For example, a hinge as shown in FIG. 28 or a swingable hinge shown in FIG. 29 can be used. Alternatively, for example, the hinge shown in FIG. 30 includes a convex connecting member 410 and a concave connecting member 420, and the concave connecting member 420 is engaged with the convex connecting member 410 and around the circumference 411. Can be rotated.

  FIG. 42 shows a twenty-second embodiment. A second convex portion 202 is provided on the front surface of the upper chopstick member so as to guide the thumb heel side in accordance with the thumb heel side. A first convex portion 201 is provided to guide the thumb side of the thumb. One end of the pillar 63 is connected to the lower chopstick member 20, and the other end is provided with a hinge. The upper chopstick member 10 and the lower chopstick member 20 are connected by the hinge. The pillar 63 is provided with an index finger human body engineering device. The structure of the forefinger human body engineering device is a protrusion 60 protruding from the back surface of the lower chopstick member, and the lower portion approaches the tip of the third phalanx of the index finger, and the lower portion approaches the tip of the lower chopstick member. To prevent that. A first inclined surface 61 that is inclined toward the tip of the lower chopstick member and toward the upper chopstick member is connected to the protrusion so as to fit the finger pad of the third phalanx of the index finger. The hinge can be the hinge shown in FIG.

  Although the right hand chopsticks are shown in the drawing, the present invention may be used for left hand chopsticks.

  The present invention has been described in detail above with reference to preferred embodiments of the present invention. It should be understood that the present invention is not limited to the embodiments described above. Those skilled in the art can make modifications, changes, or omissions after viewing the present invention, all of which are within the scope of the present invention.

Claims (22)

  In the chopsticks including the upper chopstick member (10) and the lower chopstick member (20), the thumb fixed above the front surface of the lower chopstick member via a fixing device without directly contacting the lower chopstick member A thumb is provided with an ergonomic device, wherein the thumb ergonomic device has an arc shape, and the arc-shaped opening substantially faces the tip of the chopstick, so that the arc-shaped opening does not contact the lower chopstick member when holding the chopsticks The chopsticks are in contact with a portion on the scale side of the chopsticks and hold the thumb and the lower chopstick member in an accurate relative position.   2. The thumb ergonomic device is configured in a semi-annular shape perpendicular to the longitudinal direction of the chopsticks, with an additional arc-shaped member provided with an opening for guiding the thumb side of the thumb generally facing the chopstick head of the chopsticks. Chopsticks.   The chopsticks according to claim 2, wherein an additional member (111) is provided at each end to connect to both ends of the thumb ergonomic device to form an annular thumb ergonomic device.   The thumb ergonomic device (153) used on the scale side is located on the front surface of the upper chopstick member, and a thumb ergonomic device (152) used on the heel side is provided. Located on the front surface of the upper chopstick member and fixed to the lower chopstick member by a fixing device (151), the opening thereof is generally facing the chopstick head of the chopstick so as to guide the thumb side of the thumb, and the thumb is There is a gap between the thumb ergonomic device (153) used on the scale side and the thumb ergonomic device used on the heel side so as to be in direct contact with the front surface (11) of the upper chopstick member (10). Item 1. Chopsticks according to item 1.   The thumb ergonomics device used on the thumb scale extends to the lower chopstick member so as to reach the front surface of the lower chopstick member or over the front surface of the lower chopstick member, and has an arc shape. The chopsticks according to claim 1, forming a surface.   The semi-annular thumb ergonomic device extends to the lower chopstick member so as to reach the front surface of the lower chopstick member or over the front surface of the lower chopstick member, and has a semi-cylindrical shape. The chopsticks according to claim 2 formed.   The chopsticks according to claim 1, wherein the structure of the fixing device is a support column.   An index finger human body engineering device for guiding the third finger segment of the index finger in accordance with the third finger segment of the index finger and preventing the finger segment from approaching the tip of the lower chopstick member The chopsticks according to claim 1, wherein the chopsticks are provided.   The structure of the forefinger ergonomic device is such that the lower side of the lower chopstick member is aligned with the lower part of the third phalanx of the index finger to prevent the lower part from approaching the tip of the lower chopstick member. The chopsticks according to claim 8, which is a protrusion (60) protruding from (23).   The first protrusion (61) is connected to the protrusion so as to be inclined to the tip of the lower chopstick member and to the upper chopstick member so as to fit the finger pad of the third phalanx of the index finger. 9. Chopsticks according to 9.   The chopsticks according to claim 9, wherein the protrusion is connected to the lower chopstick member by a pillar (63) between the upper chopstick member and the lower chopstick member.   In the chopsticks including the upper chopstick member (10) and the lower chopstick member (20), a first convex portion (201) is provided on the front surface of the upper chopstick member so as to guide the thumb measure side in alignment with the thumb measure side. A second protrusion (202) is provided on the front surface of the upper chopstick member so as to guide the thumb heel side in alignment with the heel side of the thumb, and the thumb scale side on the front surface of the lower chopstick member. A chopstick having at least one of the three features of being provided with a third protrusion (203) for guiding the thumb scale side in accordance with   13. The chopsticks according to claim 12, wherein a fourth protrusion (204) is provided on a front surface of the lower chopstick member for guiding the thumb side of the thumb so as to match the side of the thumb.   In the chopsticks including the upper chopstick member (10) and the lower chopstick member (20), it is prevented from approaching the tip of the lower chopstick member in accordance with the lower part of the third phalanx of the index finger. A chopstick characterized in that an index finger human body engineering device is provided, and the structure is a protrusion (60) protruding from the back surface (23) of the lower chopstick member.   The first protrusion (61) is provided on the protrusion so as to be inclined to a tip of the lower chopstick member and to be directed to the upper chopstick member so as to fit a finger pad of a third phalanx of an index finger. 14. Chopsticks according to 14.   The protrusion is provided with a second inclined surface (62) which is inclined toward the tip of the lower chopstick member and is away from the upper chopstick member so as to fit the joint of the lower part of the third phalanx of the index finger. The chopsticks according to claim 14.   15. The chopsticks according to claim 14, wherein the protrusion is provided on the lower chopstick member by a pillar (63) between the upper chopstick member and the lower chopstick member.   The chopsticks according to any one of claims 14 to 17, wherein a thumb ergonomic device is provided to guide the thumb side of the thumb in accordance with the side of the thumb.   The thumb ergonomic device comprises a thumb insertion hole (88) provided on the front surface of the lower chopstick member and / or a thumb insertion hole provided on the front surface of the upper chopstick member. The chopsticks according to claim 18.   The thumb ergonomic device is provided on the front surface of the upper chopstick member and / or on the front surface of the lower chopstick member for guiding the thumb scale side in accordance with the thumb scale side. The chopsticks according to claim 18, wherein the chopsticks are configured by a third convex portion.   In the chopsticks including the upper chopstick member (10) and the lower chopstick member (20), a thumb ergonomic device and an index finger ergonomic device are provided, and the thumb ergonomic device is in contact with the scale side of the thumb. Used to guide the thumb side of the thumb, the index finger ergonomics device is used to guide the third finger segment of the index finger in contact with the third finger segment of the index finger Features chopsticks.   An upper chopstick member (10) and a lower chopstick member (20), and a C-shaped member (93) provided on the lower chopstick member between the upper chopstick member and the lower chopstick member; A hinge including a through hole (90) and a pivot (91) provided in the upper chopstick member is provided, and the tip of the upper chopstick member is moved by fitting the C-shaped member to the pivot (91). Rotating about the pivot, and the diameter of the pivot (91) is smaller than the inner diameter of the C-shaped member (93), the C-shaped member is loosely fitted to the pivot, thereby the upper chopstick member is Chopsticks characterized by not only being able to rotate around the pivot but also being free to move.

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