Chopstick holding hand head

Abstract

The utility model relates to a chopstick holding hand head, belongs to the technical field of artificial limbs, and aims to solve the problem that an existing artificial limb hand head cannot stably grab chopsticks. The hand head comprises a hand head main body, a normally open clamp body and a control cable. The hand head body is provided with a jaw structure, the normally-open clamp body is arranged at the jaw and comprises a first clamp arm and a second clamp arm, and the upper ends of the first clamp arm and the second clamp arm are hinged to each other and kept in an open state through a reset spring. The first clamping arm is a movable arm, the second clamping arm is a fixed arm, and a first chopstick and a second chopstick are installed at the movable ends respectively. The front end of the control cable is hinged to the first clamping arm, the rear end of the control cable is connected with the driving piece, and the clamping action of the chopsticks is achieved by pulling the control cable. Chopsticks can be clamped through a simple mechanical structure, operation is convenient, the structure is reliable, autonomy of daily diet of an amputated patient can be effectively helped to recover, and life quality is improved. In addition, the chopsticks are detachable, convenient to adjust and replace, suitable for using habits of different users and high in social application value.

Description

Technical Field

[0001] This utility model relates to the field of prosthetics, specifically a chopstick holder for patients with forearm amputations. Background Technology

[0002] Chopsticks, as a primary dining utensil in China, have a long history. However, using chopsticks requires the coordinated effort of multiple fingers, which poses a significant challenge for amputees, severely impacting their quality of life. Existing prosthetic hands are often unable to grip chopsticks stably and cannot simulate the movements of able-bodied individuals. While some assistive chopstick devices exist on the market, they typically require the coordination of multiple fingers or have complex structures, making them inconvenient to use. For example, the "chopsticks with a gripper" disclosed in Chinese Patent CN87202330U, while preventing slippage to some extent, still requires the coordination of five fingers, making it inconvenient to use. Therefore, designing a device that facilitates chopstick use for amputees is of paramount importance. Summary of the Invention

[0003] The present invention aims to solve the problem that prosthetic hands in the prior art cannot stably grasp chopsticks, and provides a chopstick-holding hand with a simple structure and convenient operation.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a chopstick holder, comprising a holder body, a normally open clamping body, and a control cable, wherein:

[0005] The main body of the hand has a tiger's mouth structure;

[0006] The normally open clamp is located at the web of the hand body. The normally open clamp includes a first clamping arm and a second clamping arm. The upper ends of the first clamping arm and the second clamping arm are hinged to each other. A return spring is provided between the first clamping arm and the second clamping arm to keep the first clamping arm and the second clamping arm in an open state. The first clamping arm is a movable arm and the second clamping arm is a fixed arm. The movable ends of the first clamping arm and the second clamping arm are respectively equipped with a first chopstick and a second chopstick.

[0007] The front end of the control cable is hinged to the first clamping arm, and the rear end of the control cable is connected to the driving component, which is used to drive the end of the first chopstick on the first clamping arm to move towards the second chopstick on the second clamping arm to perform a clamping action.

[0008] Preferably, the first chopsticks and the second chopsticks are detachably connected to the first clamping arm and the second clamping arm, respectively, so as to facilitate adjusting the angle of the first chopsticks and the second chopsticks and replacing different first and second chopsticks.

[0009] Preferably, the first and second clamping arms are provided with mounting seats for easy installation of the return spring, and the two ends of the return spring are respectively mounted on the mounting seats of the first and second clamping arms.

[0010] Preferably, a stop adjustment mechanism is also provided on the side of the hinge joint of the first clamping arm and the second clamping arm to adjust the opening degree or locking state of the first clamping arm and the second clamping arm.

[0011] Preferably, the gear adjustment mechanism includes a gear adjustment plate and a gear positioning protrusion. The gear adjustment plate is hinged to the first clamping arm at its center. The gear adjustment plate has a toggle part, a gear pushing part, and a locking recess. The gear positioning protrusion is disposed on the second clamping arm. In the working state, the gear positioning protrusion abuts against the gear pushing part to react with the return spring, thereby controlling the opening degree of the first and second clamping arms. In the locked state, the gear positioning protrusion is inserted into the locking recess, thereby restricting the opening and closing movement of the first and second clamping arms. The state and gear are switched by toggling the toggle part of the gear adjustment plate.

[0012] Preferably, a perforation is provided at the base of the thumb of the main hand body, and the control cable passes through the perforation.

[0013] Preferably, the front end of the control cable is detachably hinged to the movable end of the first clamping arm.

[0014] Preferably, the index finger of the main hand body has a bendable structure, and the end of the index finger is hinged to the first clamping arm.

[0015] Preferably, the palm side of the hand body is open, and the back side of the hand body is a semi-enclosed cover structure that can cover the back of the patient's hand.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model achieves chopstick clamping through a simple mechanical structure, reducing complex electronic components and improving the reliability and durability of the device;

[0018] 2. Users can control the opening and closing of the chopsticks with simple actions, making it easy to operate and convenient for amputees to use;

[0019] 3. The chopsticks are detachable, making it easy to adjust the angle of the first and second chopsticks and replace them with different ones to suit different users' habits;

[0020] 4. This utility model helps amputees regain autonomy in daily eating and improves their quality of life by simulating the actions of a normal person using chopsticks;

[0021] 5. This utility model is applicable to amputees, and the main body of the hand is designed as a semi-enclosed shell structure, which has broad social application value;

[0022] 6. Compared with the prior art, the present invention has a simple structure, low cost and low failure rate, and is easy to promote and popularize. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a chopstick holder in one embodiment.

[0024] Label Explanation:

[0025] 1—Main body of the hand, 1.1—Thumb, 1.2—Index finger, 1.3—Connecting part;

[0026] 2—Normal open clamping body, 2.1—First clamping arm, 2.2—Second clamping arm, 2.3—Reset spring, 2.4—Mounting base;

[0027] 3—Control cable;

[0028] 4.1—The first chopstick; 4.2—The second chopstick;

[0029] 5—gear adjustment mechanism, 5.1—gear adjustment plate, 5.2—gear positioning protrusion, 5.11—toggle part, 5.12—gear push part, 5.13—locking notch. Detailed Implementation

[0030] In order to enable those skilled in the art to understand the technical content of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 As shown, a chopstick holder includes a main body 1, a normally open clamping body 2, and a control cable 3.

[0033] The hand body 1 has a tiger's mouth structure formed by the thumb 1.1 and the index finger 1.2. The wrist part of the hand body 1 is provided with a connecting part 1.3 for connecting with the prosthesis receiving cavity. The thumb 1.1 of the hand body 1 is a fixed finger. The index finger 1.2 and the other fingers of the hand body 1 are a bendable three-section structure. The distal segment of the index finger 1.2 is hinged to the first clamping arm 2.1.

[0034] The normally open clamp 2 is located at the web of the hand-held body 1. The normally open clamp 2 includes a first clamping arm 2.1 and a second clamping arm 2.2. The upper ends of the first clamping arm 2.1 and the second clamping arm 2.2 are hinged to each other. A return spring 2.3 is provided between the first clamping arm 2.1 and the second clamping arm 2.2 to keep the first clamping arm 2.1 and the second clamping arm 2.2 in an open state. The first clamping arm 2.1 is a movable arm, and the second clamping arm 2.2 is a fixed arm. The second clamping arm 2.2 is locked to the hand-held body 1 by a screw connector. The movable ends of the first clamping arm 2.1 and the second clamping arm 2.2 are respectively equipped with a first chopstick 4.1 and a second chopstick 4.2.

[0035] A perforation is provided at the base of the thumb of the main hand body 1, through which the control cable 3 passes. The front end of the control cable 3 is hinged to the first clamping arm 2.1; specifically, the front end of the control cable 3 is detachably hinged to the movable end of the first clamping arm 2.1. The rear end of the control cable 3 is connected to a driving component, used to drive the end of the first chopstick 4.1 on the first clamping arm 2.1 towards the second chopstick 4.2 on the second clamping arm 2.2 to perform a clamping action. The driving component and related structures can be found in the inventor's previously filed invention patent, entitled "A Prosthesis," patent application number 2018114282730.

[0036] The first chopstick 4.1 and the second chopstick 4.2 are detachably connected to the first clamping arm 2.1 and the second clamping arm 2.2, respectively, to facilitate adjustment of the angles of the first chopstick 4.1 and the second chopstick 4.2 and replacement with different first and second chopsticks. The first chopstick 4.1 and the second chopstick 4.2 are detachably installed on the movable ends of the first clamping arm 2.1 and the second clamping arm 2.2 by means of straps, buckles, or threaded structures.

[0037] The first clamping arm 2.1 and the second clamping arm 2.2 are provided with mounting seats 2.4 to facilitate the installation of the reset spring 2.3. In this embodiment, the mounting seat is a convex-torsion structure, and the two ends of the reset spring 2.3 are respectively sleeved on the convex-torsion structure of the first clamping arm 2.1 and the second clamping arm 2.2.

[0038] A stop adjustment mechanism 5 is also provided on the side of the hinge joint of the first clamping arm 2.1 and the second clamping arm 2.2 to adjust the opening degree or locking state of the first clamping arm 2.1 and the second clamping arm 2.2.

[0039] The gear adjustment mechanism 5 includes a gear adjustment plate 5.1 and a gear positioning protrusion 5.2. The gear adjustment plate 5.1 is hinged to the first clamping arm 2.1 at its center. The gear adjustment plate 5.1 has a toggle part 5.11, a gear pushing part 5.12, and a locking recess 5.13. The gear positioning protrusion 5.2 is disposed on the second clamping arm 2.2. In the working state, the gear positioning protrusion 5.2 abuts against the gear pushing part 5.12 to react with the return spring, thereby controlling the opening degree of the first clamping arm 2.1 and the second clamping arm 2.2. In the locked state, the gear positioning protrusion 5.2 is inserted into the locking recess 5.13, thereby restricting the opening and closing movement of the first clamping arm 2.1 and the second clamping arm 2.2. The state and gear are switched by toggling the toggle part 5.11 of the gear adjustment plate 5.1.

[0040] This utility model's chopstick holder features a normally open clamping body within the thumb-and-shoulder structure of the main body. The clamping body consists of a first clamping arm and a second clamping arm, both held open by a return spring. A control cable connects the drive unit and the first clamping arm; pulling the control cable initiates the chopstick gripping action. A position adjustment mechanism allows the user to adjust the clamping body's opening as needed, ensuring stability and precision. The bendable design of the index finger on the main body further enhances the device's flexibility and practicality. Through these designs, this utility model's chopstick holder effectively solves the problem of amputees using chopsticks, possessing significant social and practical value.

[0041] Example 2

[0042] As described in Example 1, the main difference from Example 1 is that the palm side of the hand body 1 is open, and the back side of the hand body 1 is designed as a semi-enclosed cover structure that can cover the back of the patient's hand.

[0043] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A chopstick holding hand, characterized by, The utility model provides a kind of chopsticks, comprising: A hand body, the hand body has a thumb structure; A normally open clamp body is arranged at the thumb structure of the hand body, comprising a first clamp arm and a second clamp arm hinged to each other, a reset spring is arranged between the first clamp arm and the second clamp arm to maintain the open state of the two;The first clamp arm is a movable arm, and the second clamp arm is a fixed arm, and a first chopstick and a second chopstick are respectively installed at the movable end of the first clamp arm and the second clamp arm; A control cord is hingedly connected at the front end of the first clamp arm and connected at the rear end with a driving member, for bringing the end of the first chopstick on the first clamp arm close to the second chopstick on the second clamp arm to perform a clamping action.

2. The chopstick holding hand according to claim 1, wherein: The first chopstick and the second chopstick are respectively detachably connected to the first clamp arm and the second clamp arm, facilitating adjustment and replacement.

3. The chopstick holding hand according to claim 1, wherein: The two ends of the reset spring are respectively installed on the mounting seat of the first clamp arm and the second clamp arm.

4. The chopstick holding hand according to claim 1, wherein: A stop position adjusting mechanism is further arranged beside the hinge of the first clamp arm and the second clamp arm to adjust the opening degree or locking state of the first clamp arm and the second clamp arm.

5. The chopstick holding hand according to claim 4, wherein: The stop position adjusting mechanism comprises a stop position adjusting sheet and a stop position positioning protrusion, the middle part of the stop position adjusting sheet is hingedly connected to the first clamp arm, the stop position adjusting sheet has a knob, a stop position pushing part and a locking notch, and the stop position positioning protrusion is arranged on the second clamp arm;In the working state, the stop position positioning protrusion is in contact with the stop position pushing part to form a reaction with the reset spring, thereby controlling the opening degree of the first clamp arm and the second clamp arm;In the locking state, the stop position positioning protrusion is accommodated in the locking notch, thereby limiting the opening and closing movement of the first clamp arm and the second clamp arm;The state and stop position are switched by knobbing the knob of the stop position adjusting sheet.

6. The chopstick holding hand according to claim 1, wherein: A through hole is arranged at the thumb root of the hand body, and the control cord passes through the through hole.

7. The chopstick holding hand according to claim 1 or 6, wherein: The front end of the control cord is detachably hingedly connected to the movable end of the first clamp arm.

8. The chopstick holding hand according to claim 1, wherein: The index finger of the hand body is a foldable structure, and the end of the index finger is hingedly connected to the first clamp arm.

9. The chopstick holding hand according to claim 1, wherein: The palm side of the hand body is open, and the back side of the hand body is a semi-enclosed cover structure capable of covering the back of the patient's hand.

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