CN102716001B - Rehabilitative training machine for fingers - Google Patents

Abstract

The invention provides a finger rehabilitation training device, which includes a small arm support, a servo motor is fixed on the small arm support, a bevel gear is installed on the output shaft of the motor, the bevel gear is connected to a planetary gear transmission mechanism, and the planetary gear in the planetary gear mechanism A swing rod is fixed at the lower end of the gear, a swing frame is fixed on the swing rod, a slide bar is fixed on the swing frame, a slide block is provided on the slide bar, and a fingertip fixing sleeve is installed on the slide block. The mechanism adopts a servo motor and a force measuring The device monitors the force and flexion and extension angle of the patient's four fingers in real time to ensure the safety of the patient. It is driven by a planetary gear mechanism to make the patient's four fingers rehabilitation more comfortable. The structure is simple and easy to manufacture.

Description

A finger rehabilitation training device

1. Technical field

The invention relates to a finger rehabilitation trainer, which belongs to the field of rehabilitation medical equipment.

2. Background technology

Due to stroke, traumatic brain injury, hand trauma and other diseases, the patient's hand function is lost, which not only brings a lot of inconvenience to life, but also suffers a great blow to the patient's spirit. The effect of traditional drug treatment is also not ideal. Using rehabilitation doctors One-to-one rehabilitation training is carried out hand in hand with patients. It is difficult to guarantee the training efficiency and training intensity. The training cycle is long and expensive. At the same time, patients have to go to and from the hospital frequently, and patients are negatively or unwilling to receive treatment subjectively.

Existing finger rehabilitation equipment is complex in structure and high in cost, which is unbearable for many patients economically. This planetary wheel finger rehabilitation trainer is controlled by a single motor, and has a simple and delicate structure. The planetary wheel mechanism improves the comfort of rehabilitation training for patients. At the same time, the rehabilitation trainer is equipped with force sensors and servo motor drives to ensure the safety of patients, and can record and analyze the rehabilitation status of patients.

3. Contents of the invention

The object of the present invention is to provide a simple and exquisite finger rehabilitation training device for patients to perform finger flexion and extension, avoiding injuries to patients.

The object of the present invention is achieved like this: a kind of finger rehabilitation trainer, it comprises forearm support 1, and the upper end surface of forearm support 1 is provided with groove, is fixed with servo motor 2 on the forearm support, and motor output shaft is equipped with The bevel gear 3, the upper cover plate 12 is fixed on the forearm support, the gear shaft 4 is connected between the upper cover plate 12 and the lower end surface of the forearm support, the bevel gear 3 meshes with the gear on the gear shaft 4, and the gear One is fixedly connected with the gear shaft 4, and the gear shaft 4 is equipped with locking lever one 6 and locking lever two 11, and one end of the locking lever one 6 and the locking lever two 11 is locked on the gear shaft 4, and the locking lever one 6 and the other end of the locking rod two 11 respectively lock the two ends of a short shaft 7, the short shaft 7 is arranged beside the gear shaft 4 and arranged in parallel with it, the short shaft 7 is equipped with a gear two 8, and the gear two 8 can Rotating around the short axis, the lower end of the gear two 8 fixes the swing rod 9, the gear two 8 meshes with the gear three 5 below the upper cover plate 12 fixed on the forearm bracket 1, and the swing rod 9 is affixed with Strain gauges, a swing frame 24 is fixed vertically upwards above the swing rod 9, and four rod supports 27 are fixed on the vertical direction of the swing frame 24. Each rod support 27 is welded with a horizontal slide bar 25, and the slide bar 25 is equipped with a slide bar. Block 26, fingertip fixing cover 10 is housed on the slide block, and column 14 and palm strap 15 are equipped with vertically above upper cover plate 12, and the two ends of palm bandage 15 are respectively fixed on column 14 upper and lower ends.

Compared with prior art, the present invention has following advantage:

1. The transmission mechanism of the planetary gear is adopted, and the movement trajectory of the patient's finger is close to the natural expansion and contraction of the normal finger, which makes the patient more comfortable.

2. It adopts finger slider structure, and the position of the slider can be adjusted according to the length of the patient's fingers.

3. Four fingers are driven by a single motor, which is easy to realize control.

4. A force-measuring device is used to realize the patient's active movement and passive movement functions.

5. Servo motor and force measuring device are used to record and analyze the rotation angle and force of the mechanism in real time to ensure the safety of the patient and facilitate the doctor to record, analyze and evaluate the patient's recovery.

6. The structure of this design is simple, compact and exquisite, and the processing accuracy is not high.

4. Description of drawings

Figure 1 is the overall structure of the planetary wheel finger rehabilitation trainer

Figure 2 is the planetary wheel structure diagram of the planetary wheel type finger rehabilitation trainer

Figure 3 is a schematic diagram of the intermediate connection mechanism of the fingers

5. Specific implementation

In Fig. 1, a groove is provided on the upper part of the bracket 1 to support the patient's forearm. The servo motor 2 is fixed on the bracket 1. The output shaft of the motor 2 is equipped with a bevel gear 3, and the gear meshed with it is made on the gear shaft 4. The shaft 4 clamps the shaft 7 through two clamping rods 6 and 11, the shaft 7 is equipped with a rotating gear 8, the gear 5 meshing with it is fixed on the bracket 1, the swinging rod 9 is fixed on the rotating gear 8, and the swinging rod 9 The rubber finger end cover 10 is fixed through the intermediate connection mechanism, the upper cover plate 12 is fixed on the bracket 1, the column 14 is fixed on the upper cover plate 12 through interference fit, and the column 14 is equipped with square rings 13 and 16, two The binding band 15 that fixes patient's palm is housed on the square ring.

In Fig. 2, the two ends of the gear shaft 4 are installed on the bracket 1 and the upper cover 12 through sliding bearings 17 and 21, and the locking rods 6 and 11 with through grooves are arranged in the middle, and the locking rods 6 and 11 are tightened by bolts 18. The middle channel is narrowed to clamp the gear shaft 4 and the short shaft 7. The lower side of the rotating gear 8 on the shaft 7 is fixed with three screws to the swing rod 9, and the swing rod 9 is pasted with a strain gauge 20 to feel the patient's fingertips. force. The gear 5 meshing with the gear 8 is fixed on the fork-shaped part 22 through three bolts 23, the fork-shaped part 22 is fixed on the bracket 1, and there is a round hole in the middle of the gear 5, so that the gear shaft 4 can pass through it without touching the gear 5.

Among Fig. 3, the swing rod 9 is fixed with a swing frame 24, on the swing frame 24, 4 rod holders 27 are fixed by 4 groups of bolts 28, the rod holder 27 is welded with a slide rod 25, and the slide rod 25 is equipped with a sliding rod through hole shaft clearance. Block 26, the rubber strip passes through the square hole of slide block 26 and is bonded into fingertip fixing sleeve 10.

The patient's forearm is placed in the upper groove of the bracket 1, the palm of the hand is attached to the column 14, the strap 15 is fastened, the distal knuckles of the patient's four fingers are covered on the fingertip fixing sleeve 10, and the motor 2 is controlled to rotate , the bevel gear 3 drives the gear shaft 4 to rotate, and the two locking levers 6 and 11 drive the shaft 7 to rotate around the circumference of the gear shaft 4. The gear 8 meshes with the gear 5 and self-propagates while revolving, forming a planetary gear mechanism. The locking lever 6 And 11 is a tie rod, gear 5 is a center wheel, gear 8 is a planetary wheel, and the planetary wheel 8 drives the swing lever 9 to rotate, and the swing frame 24, the bracket 27, the slide bar 25, and the slide block 26 rotate together, and through the rubber finger cot 10 Drive the patient's four-finger stretching movement.

Claims (5)

1. A finger rehabilitation training device, which comprises a forearm support (1), the upper end surface of the forearm support (1) is provided with grooves, a servo motor (2) is fixed on the forearm support, and a cone is installed on the motor output shaft. The gear (3), the upper cover plate (12) is fixed on the forearm support, the gear shaft (4) is connected between the upper cover plate (12) and the lower end surface of the forearm support, and the bevel gear (3) and the gear The gear one on the shaft (4) meshes, and the gear one is fixedly connected with the gear shaft (4), and the gear shaft (4) is equipped with locking lever one (6) and locking lever two (11), and locking lever one (6) ) and one end of locking lever two (11) are locked on the gear shaft (4), and the other ends of locking lever one (6) and locking lever two (11) lock the two ends of a short shaft (7) respectively , the short shaft (7) is arranged beside the gear shaft (4) and arranged parallel to it, the short shaft (7) is equipped with a gear two (8), and the second gear (8) can rotate around the short shaft, and the gear The lower end of two (8) fixes the swing lever (9), and the gear two (8) meshes with the gear three (5) below the upper cover plate (12) fixed on the forearm support (1), and the swing lever ( 9) There are strain gauges pasted on it, and a swing frame (24) is fixed vertically upward above the swing rod (9), and 4 rod supports (27) are fixed on the swing frame (24), and each rod support (27) is welded with a horizontal Slide bar (25), slide bar (25) is provided with slide block (26) on the slide block, and fingertip fixed cover (10) is housed on the slide block, and column (14) and palm are vertically upwards equipped with on the upper cover plate (12) Bandage (15), the two ends of palm bandage (15) are fixed on column (14) upper and lower ends respectively. 2. The finger rehabilitation training device according to claim 1, characterized in that there is a circular hole in the middle of the gear three (5), through which the gear shaft (4) passes without contacting the gear three (5). 3. The finger rehabilitation training device according to claim 1, characterized in that, gear three (5), gear two (8), locking lever one (6) and locking lever (11) form a planetary gear transmission mechanism. 4. The finger rehabilitation training device according to claim 1, characterized in that the slide bar (25) and the slide block (26) can adjust the position of the slide block according to the length of the patient's four fingers. 5. The finger rehabilitation training device according to claim 1, characterized in that, the gear three (5) meshed with the gear two (8) is fixed on the fork-shaped part (22) by three bolts (23), and the fork Shaped parts (22) are fixed on the forearm support (1).

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