TWI507157B - Chopsticks - Google Patents

Description

chopsticks

The present invention relates to a chopstick, and more particularly to a chopstick having an ergonomic device for learning a proper holding posture.

Chinese people have used chopsticks to eat for three thousand years. The first figure shows a conventional chopstick which is composed of a pair of columnar upper chopstick member 10 and lower chopstick member 20. One end 18 of the upper chopstick component and one end 28 of the lower chopstick component are used to hold the food, the end of the upper and lower chopsticks for holding the food is called the grip end, and the other end of the upper and lower chopsticks is called the tail end. . The side of the upper chopsticks part and the lower chopsticks part touching the thumb is called the front side 11, 21; the upper side 12, 22 is called the upper side; the middle side contacting the middle part of the middle finger and the index finger is called the back side 13, 23, see the second figure. The downward facing side (not shown) is referred to as the bottom surface. However, the cross-sectional shape of the chopsticks is not limited to a quadrilateral, and may be a polygon, a circle, an ellipse, or the like.

In this paper, the number of nodes of a finger means that the phalanx starting from the fingertip is called the first section, and the other knuckles are called the second section in turn, and the third section (the thumb has no third section). In addition, the side of the thumb approaching the tibia of the forearm is referred to as the thumb sacrum 33, and the side of the thumb approaching the ulnar direction of the forearm is referred to as the thumb ulnar side 34.

The correct posture for holding chopsticks is shown in the first figure. When the chopsticks are held, the first section 36 of the ring finger and the bottom 38 of the third section of the index finger are in contact with the back of the chopstick component, and the second knuckle 32 of the thumb is held down by the front of the lower chopstick component, and the three parts are stably sandwiched. Lower chopsticks parts, and the lower chopsticks parts and hands are relatively fixed. In contrast, the upper chopstick component 10 is movable: the first knuckle of the index finger and the first phalanx of the middle finger sandwich the upper chopstick component, while the first section 31 of the thumb and the third section of the index finger also clamp the upper chopstick component, the thumb The position of contact with the upper chopstick member serves as a rotating shaft, and the grip end of the upper chopstick member 10 can be moved upward and downward, so that the upper chopstick member is opened and closed with respect to the lower chopstick member, and the thumb is not moved relative to the lower chopstick member. of.

There have been some auxiliary chopsticks in the past. These chopsticks are provided with a thumb fixing device. For example, U.S. Patent No. 5,277,464 discloses a chopstick for learning, and a Chinese utility model patent CN87205972U also discloses a similar chopstick holder. The principle of these chopsticks is to set some concave areas matching the shape of the fingers on the surface of the two chopsticks for guiding the fingers holding the chopsticks. The disadvantage is that since these depressions are located in the chopsticks themselves, only the portion of the finger that is in contact with the chopsticks itself can be guided, but the portion of the finger that is not in direct contact with the chopsticks cannot be guided.

When you first learn to hold chopsticks, you will encounter some difficulties. For example, it is not easy for beginners to grasp the relative position of the thumb and the third section of the index finger. When holding chopsticks, if the thumb is too far to the side of the side, or too far to the side of the ruler, it will cause the problem of incorrect chopsticks.

Although the thumb side and the thumb side are roughly symmetrical in appearance. However, since the shape of the human hand is asymmetrical, the thumb squats to the front of the palm and other fingers, and the thumb sill faces the back of the palm without facing any fingers, so when the chopsticks are held, the thumb is biased toward the temporal side (ie, the thumb The problem caused by being too close to the first section of the index finger is completely different from the problem caused by the thumb being biased towards the ulnar side (ie, the thumb is too close to the third section of the index finger). When the thumb is tilted too far to the temporal side, the first section of the thumb as the fulcrum of the upper chopstick component will be excessively close to the first section of the index finger and the first section of the middle finger, so that the first section of the thumb hinders the two knuckles from controlling the upper chopstick component. The opening and closing action reduces the power of the chopsticks to close. In addition, when the thumb is excessively tilted to the ulnar side, the thumb is excessively close to the third section of the index finger to form a twisted chopstick as shown in the third figure. Since the twisting of the chopsticks will make it impossible for the learner to hold the chopsticks correctly, this problem is much more serious than the problem caused by the excessive tilting of the thumb to the temporal side.

When holding the chopsticks correctly (see the first figure), press the thumb on the front of the lower chopsticks part, and the bottom of the third section of the index finger and the lower part 38 hold the back of the lower chopsticks. The third section of the thumb and forefinger are on the front and back sides of the lower chopsticks. relatively. However, they are not the same distance from the lower chopstick component grip end 28, and the thumb is closer to the grip end 28 of the lower chopstick component than the index finger third knuckle. It is not easy for beginners to master this distinction. Beginners tend to mistake them for direct relatives. This misunderstanding causes the thumb to tilt toward the caudal end 29 of the chopstick component, and also causes the third section of the index finger to tilt toward the gripping end 28 of the chopstick component, erroneously bringing the thumb too close to the third section of the index finger (see Figure 3). The entire chopsticks posture is completely deformed and the chopsticks cannot be properly held.

There are some chopsticks on the market with tools that help hold chopsticks. For example, Japanese Patent Publication No. 2005-177183 discloses an auxiliary tool for learning chopsticks having a U-shaped bracket fitted near the root of the index finger. The disadvantage is that the U-shaped bracket is mounted on the adapter provided with the spring mechanism, so that the U-shaped bracket is shaken with the opening and closing of the chopsticks, and the relative position of the third section of the index finger and the lower chopstick component cannot be maintained. Moreover, such chopsticks can only guide the bottom of the index finger without guiding the thumb to press the lower chopstick component in the correct direction and position.

In addition, some existing learning chopper tools are attached with a movable connecting device to connect the chopstick member and the lower chopstick member, such as the above-mentioned Japanese Patent Publication No. 2005-177183. These activity connecting devices can only be opened and closed in one direction. Although the problem of twisting the chopsticks by beginners is avoided, the beginners are dependent on the active connecting device, and the coordination of the muscles of the hands cannot be trained to make the chopsticks properly open and close. .

It is an object of the present invention to provide an improved learning chopstick for correcting an incorrect posture of a chopstick holder using an ergonomic device.

Another object of the present invention is to provide a chopstick for learning for beginners, using an ergonomic device to guide the thumb or/and the third phalanx of the index finger, and the training learner maintains the same as shown in the first and second figures. The correct chopsticks posture.

In order to train the hand muscles to control the correct opening and closing of the chopsticks, it is still another object of the present invention to provide a movable connecting device for the chopsticks of the present invention.

According to a first aspect of the invention, an ergonomic device comprising a guide for guiding the positioning of the thumb is provided on at least one chopstick component, the guide for guiding the thumb having at least a contact with the ulnar portion of the thumb a contact surface; and/or an ergonomic device including a guide for guiding the index finger on the lower chopstick component, the guide for guiding the index finger having the third section of the index finger and/or the front of the palm The contact surface adjacent to the part of the index finger root.

The relative positions of the thumb and lower chopstick components are substantially perpendicular to each other as shown in the first figure. However, it is easy for the learner to tilt the thumb over the ulnar side. Only one position of the thumb touches the lower chopstick part, which is the fingertip of the second section of the thumb. The contact position alone makes it difficult to make the thumb vertical, and the learner can easily tilt the thumb around the contact position toward the ulnar side, causing the chopsticks to be twisted as shown in the third figure.

Therefore, we designed a guide for the ulnar side of the thumb to add a position where the thumb is in contact with the lower chopstick component. This guide is spaced apart from the lower chopstick member and secured to the front of the lower chopstick member by a connector. Wherein, the guiding member may be spatially located between the upper chopstick component and the lower chopstick component; or may be located in front of the upper chopstick component to guide the first section of the thumb.

In a variant, the first end of the guiding member has a portion extending from the body toward the lower chopstick member, the extending portion reaching at least the front face of the lower chopstick member and being integrally connected with the connecting member for use To increase the range of contact.

This guide has only one side, it is more difficult to get stable, making it difficult for beginners to master. The user has to press the front of the lower chopstick part with the second section of the thumb very accurately to get it steady. However, this guide is not completely useless, because there is still an auxiliary function of holding chopsticks, but it is more suitable for users who already have a certain degree of proficiency in chopsticks.

In another embodiment, the guide for guiding the thumb is provided not only with the contact surface in contact with the ulnar side portion of the thumb, but also with a contact surface in contact with the temporal side portion of the thumb, so that the guide member is substantially It is semi-annular, and the two sides of the contact surface respectively face the clamping end and the tail end of the chopstick for defining the thumb side and the ulnar side. The first end of the semi-annular guide may have a portion extending from the body toward the lower chopstick member, the extended portion reaching at least the front face of the lower chopstick member, forming a semi-tubular shape, and being integrally formed with the connecting member.

Alternatively, the semi-annular thumb ergonomic device can be attached to the additional semi-annular members such that the guide members form an annulus with an internal dimension that allows the thumb to be inserted. The first end of the guide member may have a portion extending from the body toward the lower chopstick member, the extended portion reaching at least the front face of the lower chopstick member, forming a tubular shape, and being integrally formed with the connecting member.

In still another embodiment, the guide for guiding the thumb is spatially located in front of the upper chopstick component, the thumb guide further being provided with a crotch side guiding portion that is spatially located in front of the upper chopstick component, And being fixed to the upper side of the lower chopstick member through the connecting member for guiding the crotch side of the first section of the thumb, the gap between the ulnar side guiding portion and the crotch side guiding portion of the thumb guiding member, the finger of the first section of the thumb The abdomen is in direct contact with the front of the upper chopstick member through the gap. The first end of the guide member may have a portion extending from the body toward the lower chopstick member, the extended portion reaching at least the front face of the lower chopstick member, forming a semi-tubular shape, and being integrally formed with the connecting member.

The present invention also includes a guide member that is directly mounted to the front of the lower chopstick member for guiding the second scale side of the thumb. This guide can guide the relative position between the thumb and the lower chopstick component and prevent the thumb from excessively tilting toward the ulnar side. And, in addition to the guide member, at least three other guide members may be included: a first one is fixed in front of the lower chopstick member for guiding the crotch side of the second segment of the thumb, and the second is fixed to the upper chopstick The front of the component is used to guide the ulnar side of the first section of the thumb, and the third is fixed in front of the upper chopstick component for guiding the temporal side of the first section of the thumb.

According to the present invention, the guide member for guiding the index finger is a column having one end fixed to the back of the lower chopstick member and the other end facing away from the back surface of the lower chopstick member for preventing the third knuckle of the index finger from facing the chopstick The grip end moves.

A contact surface of the guide for guiding the index finger may extend from the post toward the upper chopstick component and the gripping end for contacting and guiding the finger pad of the third phalanx of the index finger.

Alternatively, a contact surface of the guide for guiding the index finger may extend from the post toward the bottom and the grip end of the lower chopstick member for contacting and guiding a portion of the front of the palm adjacent the base of the index finger.

Alternatively, the pillared guide is attached to the lower chopstick component by a connector between the upper chopstick component and the lower chopstick component.

The present invention does not limit the specific structure and mounting manner of these guide members, so any chopsticks equipped with the above-described guide members are feasible.

In still another embodiment, a movable attachment means is provided between the upper chopstick component and the lower chopstick component to maintain the upper and lower chopstick components spaced apart but relatively movable, wherein the articulation means comprises a connecting rod and a shaft cooperating with the connecting rod, one end of the connecting rod is fixed on the lower chopstick member, and the other end has an open C-shaped card interface, and the shaft is disposed on the upper chopstick a receiving slot of the component for movably connecting with a C-shaped card interface of the connecting rod, the movable connecting device being configured to allow the upper chopstick member to pivot relative to the lower chopstick member and deflect slightly The pivoting causes the gripping ends of the upper and lower chopstick members to open or close relatively.

The inner diameter of the C-shaped card interface may be set to be larger than the diameter of the shaft such that the upper chopstick member may be slightly deflected relative to the lower chopstick member.

The receiving groove and the shaft may be disposed at a position where the thumb contacts the upper chopstick member such that the position becomes an axis of rotation in which the upper chopstick member opens and closes relative to the lower chopstick member.

In order to solve the problem of learning chopsticks for beginners, there is a need for a chopstick having a guide that can simultaneously guide the third section of the thumb and forefinger to train the beginner to maintain the correct relative position and distance of the two finger portions. During the learning process, these two finger parts must be guided at the same time to achieve the training effect. This chopstick is fitted with a thumb guide and an index finger guide at the same time.

The two knuckles of the thumb are the only parts of the hand that can press the front of the two chopsticks. Therefore, it is important to keep the correct position and orientation of the thumb. The two knuckles of the thumb are fixed relative to the lower chopstick components, so the ergonomic device for the thumb should guide the relative position of the thumb to the lower chopstick component.

The fourth figure shows an embodiment of the ergonomic device of the present invention, wherein a pair of chopsticks is composed of an upper chopstick component 10 and a lower chopstick component 20, and the lower chopstick component is provided with an ergonomic device having an ergonomic device A guide 133 ₁ for guiding the thumb, which is not directly mounted on the front face 21 of the lower chopstick member, but is mounted above the front face of the lower chopstick member, and is fixed to the lower chopstick member 20 by the connector 131 ₁ . Spatially, the guide is located between the upper chopstick component 10 and the lower chopstick component 20. The guide member 133 ₁ has a substantially arcuate surface contact surface that is in contact with the ulnar side of the thumb. The guide member 133 ₁ extends from the free end side of the connecting member 131 ₁ toward the rear end of the lower chopstick member 20 and the front surface of the chopstick member and protrudes from the front faces of the upper and lower chopstick members, the curved faces of which face the clips of the two chopstick members Hold end 28. The curved surface guide 133 ₁ is located on the ulnar side of the thumb to prevent the ulnar side of the thumb from being too biased toward the tail portion 29 of the lower chopstick component, so as to reduce the chance of twisting the chopsticks as shown in the third figure, and also make the thumb The contact with the ergonomic device is natural and comfortable.

In this embodiment, the guiding member is spaced apart from the lower chopstick member by a connecting member, wherein the connecting member 131 _{1 has} a rod shape. Of course, the shape of the connecting member is not limited thereto, and may be other suitable shapes, such as a cylinder, a flat member or an artistic curved body, etc., as long as the ergonomic device can be fixedly attached to the lower chopstick member. Yes. Moreover, since the guide member is fixed to the lower chopstick member instead of being fixed to the upper chopstick member, the shaking caused by the upper chopstick member when the chopstick is opened and closed does not affect the relative position between the guide member and the lower chopstick member. Therefore, the thumb portion can be guided to maintain a fixed relative position with the lower chopstick member. The guiding member and the connecting member may be integrally formed, or may be detachably mounted, and in general, a fixed relative position can be formed.

Once this guide is installed, the lower chopstick component has two positions in contact with the thumb, the position where the guide contacts the ulnar side of the thumb, and the position in front of the lower chopstick component that contacts the second base of the thumb. The two positions are spaced apart from each other to form a straight line that is substantially perpendicular to the lower chopstick member so as to be able to guide the thumb to maintain a substantially vertical correct posture as shown in the first figure. Moreover, the guide member is spaced apart from the lower chopstick member by the connecting member, and the positioning of the thumb is more effectively guided than directly disposed on the lower chopstick member body. As shown in the fifth figure, one hand can hold a pair of chopsticks in the correct posture by the ergonomic device of the embodiment of the present invention.

The sixth to ninth figures show various variations of the ergonomic device of the above-described embodiment, in which the same components are denoted by the same reference numerals, and the different components are denoted by sequentially increasing angular codes in various modifications.

In the sixth drawing, the length of the connecting member ₁₃₁₂ than the above-described embodiments of the _elongated connecting member 131, such that in use the chopsticks, a thumb oriented guide ₁₃₃₂ up to the first 11 chopsticks member 10, such that the thumb of the guide member 133 ₂ The first section capable of guiding the thumb forms a distance from the second section of the thumb of the lower chopstick component in direct contact so as to more effectively guide the positioning of the thumb.

In the seventh FIG thumb arcuate guide member ₁₃₃₃ not only the body reaches a position between the upper member and chopsticks chopsticks, chopsticks member also reaches the front of 1,110.

In the eighth figure, the thumb guide 133 ₄ has a portion 135 extending downwardly from the chopstick member 20, the extension portion reaching the front face 21 of the lower chopstick member to form a curved surface for adding a thumb and the thumb guide 133 ₄ Contact range. In the ninth figure, the thumb guide 133 ₅ has a portion 137 extending downwardly from the chopstick member 20, the extension traversing the front face 21 of the lower chopstick member and reaching below the lower chopstick member for further adding a thumb and the thumb The contact range of the guide 133 ₅ .

The ergonomic device of the above embodiment is only used to guide the ulnar side of the thumb, which is difficult for beginners to grasp, but it is not completely useless, because it still has the effect of assisting the holding of chopsticks, but it is more suitable for those who have already had a certain degree of learning. Or help some learners who already have the ability to hold chopsticks to practice or correct the previously incorrect posture to focus on the ulnar side of the thumb.

Figure 11 shows another embodiment of the ergonomic device of the present invention. In this embodiment, the ergonomic device is provided chopsticks member 20, the guide member by the thumb ergonomic device ₁₀₃₁ and the connector ₁₀₁₁ components. The thumb guide 103 ₁ is fixed to the lower chopstick member by a joint member 101 ₁ which protrudes from the front face of the chopstick member and is spatially located between the upper chopstick member 10 and the lower chopstick member 20. Thumb guide arcuate in cross-section _1031, the guide portion having a radial guide portion ₁₀₂₁ and the ulnar _1041, respectively, the two parts away from chopsticks member forwardly convex, forming a semi-annular groove, the size of the semi-annular groove It is arranged to slightly and loosely surround and contact a portion of the thumb so that the left and right movements of the temporal and ulnar sides of the thumb are limited by the guide and also make the contact between the thumb and the guide natural and comfortable. The thumb guide 103 _{1 is} kept separated from the lower chopstick member 20 by the connector 101 ₁ . In this embodiment, the connecting member is a short cylindrical body.

11 through 18 are various variations of the embodiment of the ergonomic device shown in the tenth embodiment, wherein the same components are denoted by the same reference numerals, and the different components are represented by sequentially increasing angular codes in various variations. .

In the eleventh drawing, the guide member ₁₀₃₂ by the thumb ₁₀₁₂ chopsticks member fixed to the lower connecting member 20, wherein the length of the connection member ₁₀₁₂ such that the semi-annular guide member may be a thumb onto the front member 10 of the chopsticks, to direct The first section of the thumb. Alternatively, a blocking member 145 may be provided on the back side of the connector 101 ₂ or the guide member to prevent the upper chopstick member 10 from being too close to the lower chopstick member 20.

In the twelfth figure, the semi-annular thumb guide 103 _{3 is} similar to the semi-annular thumb guide 10 ₁ in the tenth figure, except that a portion extending in the direction toward the lower chopstick member is attached so that the thumb is guided The piece reaches the front of the lower chopstick component and forms a semi-tubular shape for increasing the contact range with the thumb to enhance the stability of the chopsticks.

In the thirteenth figure, a semi-circular guide member ₁₀₃₄ and the thumb tenth thumb FIG semi-annular guide member ₁₀₃₁ is similar, except that the attached part extending toward the lower part of the chopsticks, so that the thumb guide The piece reaches and passes beyond the front of the lower chopstick component to form a semi-tubular shape.

In a fourteenth figures, a semi-annular guide the thumb and the thumb of the guide member ₁₀₃₂ in the eleventh FIG ₁₀₃₅ is similar, except that the thumb of the guide member ₁₀₃₅ in this figure toward the lower extension member chopsticks, So as to reach the front of the lower chopsticks part, a semi-tubular shape is formed.

In the fifteenth diagram, the thumb guide 103 _{6 is} provided with a guiding portion 104 ₆ for the thumb ulnar side and a crotch side guiding portion 10 ₆ which spatially reaches the front face 11 of the upper chopstick member, For guiding the ulnar side and the temporal side of the first section of the thumb, the guiding member is fixed to the lower chopstick member through the connecting member 106 ₆ , and a gap is formed between the two guiding portions, so that the finger pad of the first section of the thumb passes through the The gap directly contacts the front of the upper chopstick component.

Fig. 16 is a modification of the fifteenth diagram, in which the thumb guide 103 ₇ extends down the chopstick member and reaches the front of the lower chopstick member to form a semi-tubular shape.

In a seventeenth embodiment, a modification of the fourteenth embodiment, the thumb guide member 10 ₈ extends downwardly toward the chopstick member to form a semi-tubular shape, but the front center portion of the extension portion exposes the lower chopstick member so that the user can access The front of the lower chopsticks component.

The ergonomic device in the eighteenth diagram is substantially similar to the ergonomic device shown in Fig. 11, except that the ulnar side guiding portion 104 _{9 of the} thumb guide is provided with an extending portion to reach the lower chopstick The front of the part.

Figure 19 is a variation of the tenth embodiment, except that an additional semi-annular member 111 is provided, attached to both ends of the semi-circular thumb guide, forming an annular thumb guide, the inner dimensions of the annular guide Suitable for a slight loose fit into the thumb.

Figures 20 and 21 are two variants of the ergonomic device of Figure 19. Its annular thumb guide extends down the chopstick component to or beyond the front of the lower chopstick component to form a tubular shape for the purpose of increasing the contact area of the thumb guide with the thumb.

A twenty-second figure shows still another embodiment of the ergonomic device of the present invention. As shown in the figure, an ergonomic device is provided on a pair of chopsticks composed of the upper chopstick member 10 and the lower chopstick member 20, the ergonomic device including two guide members 201, 202 respectively disposed on the upper chopstick member 10. And two guides 203, 204 disposed on the lower chopstick member 20. These guides protrude from the front of the two chopstick components, and the two guides on the same chopstick component are collectively configured as a card slot for resting the thumb for guiding the thumb and ulnar sides of the thumb and defining their displacement.

In addition to setting the four guides at the same time, it is also possible to select only one to three of the guides. Wherein, the guiding member 203 located in the lower chopstick member is particularly important because the guiding member is relatively fixed to the lower chopstick member, and can guide the relative position of the thumb ulnar side and the lower chopstick member, and can also prevent the thumb from excessively tilting toward the ulnar side, and reduce the holding The chopsticks are twisted.

In a variation of the ergonomic device shown in Fig. 22, the shape of the guide near the trailing end of the lower chopstick member may be set to a shape that fits the ulnar side of the thumb, for example, the lower chopsticks shown in Fig. 23. a guide member 203 on the member 20 (the remaining three guide members are not shown) having a downwardly extending portion 205, the guide member and its extension portion are matched with the shape of the thumb ulnar side and the contact range is increased, and may be further Firmly hold the position of the thumb and limit the thumb to the end of the chopsticks.

The above embodiments are mainly directed to the definition of the thumb ulnar side and/or the temporal side position for guiding and/or correcting the situation in which some people place their thumb in an incorrect position when using chopsticks.

For the case where the position of the index finger when some people hold the chopsticks is incorrect, correction can be made according to the following embodiments of the present invention.

The twenty-fourth embodiment shows another embodiment of the ergonomic device of the present invention. As can be seen from the figure, the back surface 23 of the lower chopstick member 20 is provided with an ergonomic device 60 ₁ in the vicinity of the rear end of the chopstick member. The engineering device 60 ₁ includes a guide protruding from the back of the chopstick member, the guide being a column having one end fixed to the back of the lower chopstick member and the other end facing away from the back of the lower chopstick member for contact and guiding The fingertips of the third section of the index finger are placed on the lower chopstick component to prevent the bottom of the index finger from being too close to the gripping end 28 of the chopstick component.

The twenty-fifth through twenty-seventh drawings are several variations of the ergonomic device in the embodiment shown in the twenty-fourth embodiment.

In the twenty-fifth view, the guide of the ergonomic device 60 ₂ includes a bottom portion fixedly attached to the back surface 23 of the lower chopstick member 20 and a portion 61 ₂ extending in the direction toward the upper chopstick member 10 and the grip end of the pair of chopsticks. The shape of the extension portion 61 ₂ preferably cooperates with the finger pad of the third segment of the index finger to facilitate proper positioning of the index finger.

Optionally, a second extension 62 can be provided at the bottom of the ergonomic device 60 ₃ . Referring to the twenty-sixth diagram, the second extension 62 is inclined downwardly and toward the grip end of the lower chopstick component to match the index finger root The following part is the part of the palm of the hand that is adjacent to the base of the index finger.

Alternatively, the ergonomic device 60 ₄ may include a guide member and a connector that is secured to the lower chopstick member by a connector 63 and protrudes from the back face 23 of the lower chopstick member 20, the guide member being located on the upper chopstick member 10 Between the lower chopstick member 20 and the lower chopstick member 20, for guiding the third segment of the index finger, as shown in FIG.

In the embodiments shown in the above twenty-fourth to twenty-seventh embodiments, the index finger ergonomic device is fixed to the lower chopstick member, and the advantage is that the ergonomic device does not open with the chopsticks. Instead, the chopstick member is swayed, but is kept fixed to the lower chopstick member so as to guide the third section of the index finger to a position relatively fixed to the lower chopstick member. In this way, the learner can feel that the opening and closing of the chopsticks will not cause the third section of the index finger to exercise, so that the learner can avoid misunderstanding and mistakenly think that the joints at the bottom of the index finger need to be exercised.

The above embodiments are all used to locally correct and guide a finger site, such as a thumb or index finger. However, for beginners, the ergonomic device of the above embodiment is not sufficient for the beginner to fully grasp the correct posture of holding the chopsticks. For this purpose, any of the above-described embodiments for guiding the thumb and any of the guides for the index finger can be combined to form a learning chopstick for guiding the thumb and the index finger at the same time. For example, without limitation, the thumb guide of the fourth figure is combined with the index finger guide of the twenty-fourth figure. In this way, the thumb and the third section of the index finger can be properly positioned, that is, as shown in the first figure, the thumb is closer to the grip end of the chopstick than the third section of the index finger, thereby preventing the third section of the thumb and forefinger. Being too close leads to the problem of twisting chopsticks as shown in the third figure. This feature is very important for beginners.

Alternatively, the thumb guide, the connector, and the index finger guide can be combined to form an ergonomic device that can simultaneously guide the thumb and forefinger to maintain the correct relative position of the thumb and forefinger to prevent The problem of twisting the chopsticks shown in the third figure. For example, Figures 28 through 30 show several views of the front, bottom and back sides of an embodiment of the integrated ergonomic device of the present invention. Figure 28 shows a front view of the ergonomic device, the ergonomic device being constituted by a guide member 103 ₁₀ fixed to the lower chopstick member 20, the guide member having an irregular shape, the upper end of which reaches the upper chopsticks and the lower chopsticks The position between the parts, the lower end extends down the chopsticks part and beyond the lower chopsticks part. The guide has a curved surface for simultaneously defining the ulnar side and the temporal side of the thumb and conforming to the shape of the thumb. The guide member also has an irregular extension extending from a fixed portion thereof toward a bottom surface of the lower chopstick member, such that the surface of the irregular extending portion 117 substantially conforms to the shape of the connection position between the thumb and the index finger, facilitating the holder of the chopstick holder The chopsticks can be held comfortably, see Figures 29 and 30. As can be seen from the thirtieth aspect, the back surface of the ergonomic device has a contact surface that is in contact with and conforms to the third finger pad and the lower portion of the index finger.

Alternatively, a movable attachment means may be provided between the upper chopstick component 10 and the lower chopstick component 20 to define the distance between the two chopstick components. The thirty-first through thirty-third figures are a variation of the ergonomic device shown in the twenty-eighth to thirty-thth drawings, wherein the main difference is that a movable connecting device connection is provided between the two chopsticks.

Referring to the thirty-fourth diagram, the movable connecting device includes a connecting rod 93 and a shaft 91 that cooperates with the connecting rod. One end of the connecting rod is fixed to the upper surface 22 of the lower chopstick member, and the other end is a free end, and the free end is provided with a C-shaped card interface with an opening upward. The shaft 91 is disposed in a receiving groove 90 formed in the upper chopstick component that is designed to accommodate the C-shaped free end of the lower chopstick component and allow the free end to properly move therein. The shaft 91 in the receiving groove 90 is for engaging with the card interface of the connecting rod 93 so that the upper chopstick member can be pivoted relative to the lower chopstick member to open or close the grip end of the pair of chopsticks.

The central opening of the C-shaped free end may also be sized to allow the free end to be slightly deflected relative to the shaft 91 because the inner diameter of the C-shaped card interface is larger than the diameter of the shaft, but the free end does not detach from the shaft Rod, see Figure 35. This can train the learner to rely on the coordination of the hand muscles to prevent the upper side of the upper chopsticks.

Alternatively, the above-described movable connecting member can be applied to the chopsticks of any of the above embodiments. For example, on the lower chopstick member 20, which is simultaneously provided with the thumb guide in the thirteenth diagram and the index finger guide in the twenty-fifth diagram, a movable connecting member is also provided, as shown in the thirty-sixth. As another example, a movable connector may be provided on the pair of chopsticks shown in the thirty-first figure such that the distance between the upper and lower chopstick members is defined while guiding the thumb and forefinger.

And, the receiving groove and the shaft may be disposed at a position where the thumb contacts the upper chopstick member, so that the position becomes a rotation axis of the upper chopstick member opening and closing with respect to the lower chopstick member, such as the third Figure 11 and Figure 33 show.

The configuration of the connecting member is not limited to the above embodiment, and a modification can be made. For example, referring to the thirty-seventh view, the lower chopstick member is provided with a connecting member 299 which has an inverted "L" shape, one end of which is fixedly connected to the lower chopstick member, and the other end (ie, the free end) is at the top. There is a "C" shaped card interface similar to that shown in the thirty-fourth figure for engaging the shaft in the receiving groove provided on the upper chopstick member 10. In this embodiment, the back of the connector 299 is provided with a guiding member 301 for guiding the third section of the index finger, and two guiding members 302, 303 are provided at corresponding positions in front of the upper chopstick member for defining and guiding. Positioning of the temporal and ulnar sides of the thumb. Of course, other types of guides or ergonomic devices can also be provided on the connector or on the chopstick component.

For the above embodiments and variants, the distance between the two chopstick components is defined as follows: the width or span of the thumb guide of the ergonomic device described herein is based on the fact that the average person is holding the chopsticks correctly. The distance at which the thumb is positioned at the upper and lower chopsticks is the standard. The fingertips of the first section of the thumb press the front of the upper chopstick component, and the fingertips of the second section of the thumb press the front of the lower chopstick component. See the first figure. .

The ergonomic device of the present invention can be used for both the right hand held chopsticks and the left hand held chopsticks after mirror adjustment in the direction of the device.

The invention has been described in detail above with reference to a preferred embodiment of the invention. It will be understood that the invention is not limited to the embodiments described above. On the contrary, it will be apparent to those skilled in the art that the present invention may be modified, changed or omitted after reading the present invention.

10. . . Upper chopsticks parts

11. . . On the front of the chopsticks

12. . . Above the chopsticks parts

13. . . On the back of the chopsticks part

18. . . Clamping end of the upper chopsticks

19. . . The end of the upper chopsticks part

20. . . Lower chopsticks parts

twenty one. . . The front of the lower chopsticks

twenty two. . . The top of the lower chopsticks

twenty three. . . The back of the lower chopsticks

28. . . Clamping end of the lower chopsticks part

29. . . The end of the lower chopsticks part

31. . . thumb

33. . . Thumb side

34. . . Thumb side

36. . . The first section of the ring finger

38. . . Index finger bottom

60 ₁ . . . Guide

60 ₂ . . . Guide

60 ₃ . . . Guide

60 ₄ . . . Guide

61 ₂ . . . Extension

61 ₃ . . . Extension

62. . . Extension

63. . . Connector

90. . . Receiving slot

91. . . Shaft

93. . . Connector

102 ₁ . . . Lateral guide

102 ₂ . . . Lateral guide

102 ₃ . . . Lateral guide

102 ₄ . . . Lateral guide

102 ₅ . . . Lateral guide

102 ₆ . . . Lateral guide

102 ₇ . . . Lateral guide

102 ₈ . . . Lateral guide

103 ₁ . . . Thumb guide

103 ₂ . . . Thumb guide

103 ₃ . . . Thumb guide

103 ₄ . . . Thumb guide

103 ₅ . . . Thumb guide

103 ₆ . . . Thumb guide

103 ₇ . . . Thumb guide

103 ₈ . . . Thumb guide

103 ₉ . . . Thumb guide

104 ₁ . . . Ruler side guide

104 ₂ . . . Ruler side guide

104 ₃ . . . Ruler side guide

104 ₄ . . . Ruler side guide

104 ₅ . . . Ruler side guide

104 ₆ . . . Ruler side guide

104 ₇ . . . Ruler side guide

104 ₈ . . . Ruler side guide

104 ₉ . . . Ruler side guide

111. . . Additional semi-annular part of the thumb guide

111’. . . Additional semi-annular part of the thumb guide

111"...additional semi-ring part of the thumb guide

117. . . Extension

131 ₁ . . . Connector

131 ₂ . . . Connector

133 ₁ . . . Thumb ruler guide

133 ₂ . . . Thumb ruler guide

133 ₃ ‧‧‧ thumb ruler guide

133 ₄ ‧‧‧ thumb ruler guide

133 ₅ ‧‧‧ thumb ruler guide

135‧‧‧Extension

137‧‧‧Extension

145‧‧‧blocking parts

201‧‧‧ thumb ruler guide

202‧‧‧ thumb lateral guide

203‧‧‧ thumb ruler guide

204‧‧‧ thumb side guide

205‧‧‧Extension

299‧‧‧Connecting parts

301‧‧‧Guide

302‧‧‧ thumb side guide

303‧‧‧ thumb ruler guide

The first picture: the front view of the correct chopsticks posture of the general chopsticks;

Second picture: a rear view of the correct chopsticks posture of a general chopstick;

The third picture is a schematic diagram showing the distortion of the chopsticks caused by the incorrect posture of the chopsticks when using the general chopsticks;

Fourth: a schematic view of an embodiment of an ergonomic device having a guide for guiding a thumb of the present invention;

Fig. 5 is a schematic view showing the chopsticks of the ergonomic device with the thumb guide shown in the fourth figure in use;

Sixth to ninth drawings: schematic views of a plurality of variations of the ergonomic device of the chopsticks shown in the fourth figure;

Figure 11 is a schematic view showing another embodiment of the ergonomic device of the chopstick of the present invention having a guide for guiding the thumb;

11th to 18th drawings: a schematic view showing a plurality of variations of the thumb guide shown in the tenth figure;

Figure 19 is a schematic view showing still another embodiment of the ergonomic device of the chopstick of the present invention having a guide for guiding the thumb;

20th and 21st drawings: a schematic view showing two variants of the thumb guide shown in the nineteenth figure;

Twenty-second drawing: is a schematic view showing still another embodiment of the ergonomic device of the chopstick of the present invention having a guide for guiding the thumb;

Twenty-third figure: a modification of the thumb guide shown in the twenty-second figure, only the guide for defining the ulnar side of the thumb on the lower chopstick part;

Figure 24 is a schematic view showing an embodiment of an ergonomic device of the chopstick of the present invention having a guide for guiding the index finger;

Twenty-fifth to twenty-seventh drawings: a schematic view of various variations of the ergonomic device of the chopsticks shown in the twenty-fourth figure;

28th to 30th drawings: an embodiment of an ergonomic device having a guide for guiding a thumb and an index finger of the present invention;

31st to 33rd drawings: a variant of the ergonomic device shown in the twenty-eighth figure;

Figure 34 is a schematic view of a connecting device for a chopstick of the present invention, the ergonomic device of the chopstick of the present invention is not shown;

Figure 35 is a plan view showing the connecting member of the connecting device shown in Figure 34 engaged with the shaft in the receiving groove and slightly deflected;

Figure 36 is a schematic view showing an embodiment of the ergonomic device and the connecting device of the present invention;

Figure 37 is a schematic view showing another embodiment of the ergonomic device and the connecting device of the present invention.

10. . . Upper chopsticks parts

twenty one. . . The front of the lower chopsticks

29. . . The end of the lower chopsticks part

131 ₁ . . . Connector

133 ₁ . . . Thumb ruler guide

Claims (2)

A chopstick comprising an elongated upper chopstick component and a lower chopstick component, each of the upper chopstick component and the lower chopstick component having a grip end and a tail end opposite the grip end, wherein the upper chopstick component And a movable connecting device is disposed between the lower chopstick member to keep the upper and lower chopstick members spaced apart but relatively movable, wherein the movable connecting device comprises a connecting rod and a shaft cooperating with the connecting rod One end of the connecting rod is fixed on the lower chopstick member, and the other end has an open C-shaped card interface, and the shaft is disposed in the receiving groove of the upper chopstick member for connecting with the connecting rod The C-shaped card interface is movably connected, the inner diameter of the C-shaped card interface being larger than the diameter of the shaft so as to allow the upper chopstick member to pivot relative to the lower chopstick member and deflect slightly Pivot rotation causes the gripping ends of the upper and lower chopstick members to open or close relatively. The chopstick of claim 1, wherein the receiving groove and the shaft are disposed at a position where the thumb contacts the upper chopstick member, such that the position becomes the upper chopstick member opens relative to the lower chopstick member And closed rotating shaft.