CN102389360B - Ankle flexion and extension exerciser - Google Patents

Abstract

The invention relates to an ankle joint flexion and extension exerciser which structurally comprises a foot plate, a speed-reducing motor, a motor base, a base plate, a base, two rocker arm frames, two L-shaped rocker arms, an eccentric wheel, a rocker arm shaft, a foot plate shaft, a screw hole lifting block, a lifting screw rod, a guide hole lifting block, a lifting guide rod and an adjusting knob. When in use, the speed-reducing motor drives the L-shaped rocker arms to make a curved reciprocating motion around a rotating shaft through the eccentric wheel, and the front ends of bent arms of the L-shaped rocker arms drive the foot plate to make a curved reciprocating motion, so that heels can be forced to rotate around ankle joints to drive lower limb muscles to make flexion and extension exercises, thereby promoting the lower limb blood to flow back to the heart, and effectively preventing surgical patients lying in bed for long time from lower limb deep venous thrombosis. Due to the reasonable design, the flexion and extension amplitude can be adjusted and can be subjected to both coarse adjustment and fine adjustment; the low-voltage direct-current planet gear type speed-reducing motor is used, thereby ensuring the safety and reliability; and the flexion and extension frequency can be adjusted by adjusting the rotating speed of the motor. Thus, the ankle joint flexion and extension exerciser is especially suitable for helping patients lying in bed to make ankle joint exercises.

Description

Ankle flexion and extension exerciser

technical field

The invention relates to a sports device, in particular to a device capable of simulating the ankle joint movement of a surgical patient during normal walking, helping the muscles of the lower limbs to contract and preventing stagnation of blood flow, and belongs to the medical and health care device for passive exercise.

Background technique

Under normal human conditions, the muscles of the lower limbs flex and extend the ankle when walking, and the contraction of the muscles of the lower limbs will compress the veins of the lower limbs, helping to squeeze the blood of the lower limbs back to the heart, especially the calf muscles. Clinically, most surgical patients stay in bed for a long time, which leads to immobility of lower limb muscles, slows down blood flow, and easily coagulates to form thrombus in blood vessels. Orthopedic joint surgery patients have a very high chance of deep vein thrombosis of the lower extremities. Once a large thrombus falls off the blood vessel, it will embolize the blood vessels of the lungs, and the probability of death is very high. Therefore, it is of great clinical significance to maintain the ankle joint activity of bedridden patients.

Contents of the invention

The purpose of the present invention is to help surgical patients squeeze the lower limb blood back to the heart, provide a device with reasonable structure design, simple and convenient use, adjustable flexion and extension range, drive lower limb muscle movement, promote lower limb blood backflow to the heart, and prevent thrombus formation Ankle flexion and extension exerciser.

The ankle joint flexion and extension exerciser of the present invention includes a foot plate, a geared motor and a motor seat, and also includes a base plate, a base, 2 rocker arms, 2 L-shaped rocker arms, an eccentric wheel, a rocker shaft, a foot plate shaft, and a screw hole for lifting Block, lifting screw, guide hole lifting block, lifting guide rod and adjustment knob, the L-shaped rocker arm is composed of a longitudinal arm and a curved arm, the upper end of the longitudinal arm is provided with a rotating hole, the middle and lower part of the longitudinal arm is provided with a longitudinal groove, and the longitudinal arm The lower end is connected with the bending arm and has a rocker hole. The front end of the bending arm is provided with a square foot plate hole. The base is installed on the bottom plate. There is a rotating shaft at the upper end of the boom, and the upper ends of the two L-shaped rocker arms are hoisted on the two rotating shafts through the rotating holes, and the two ends of the rocker shaft are fixed on the rocking shaft holes at the lower ends of the two L-shaped rocker arms. And the lower part of the rocker frame is provided with an arc-shaped swing hole corresponding to the swing curve of the rocker shaft. The two ends of the foot plate shaft are fixedly connected with the square foot plate holes at the front end of the curved arm extending out of the rocker arm frame. Above, the deceleration motor is installed on the motor base, and the output shaft of the deceleration motor protrudes from the motor base and is fixedly connected with the center hole of the eccentric wheel. The eccentric shaft on the eccentric wheel is installed in the longitudinal groove of the L-shaped rocker arm. The lifting block is fixed parallel to both sides of the motor base, the lifting guide rod is inserted into the lifting guide hole of the guide hole lifting block and installed on the rocker frame, and the lifting screw is screwed into the lifting screw hole of the screw hole lifting block and installed on the On the rocker arm frame, one end of the lifting screw is connected with the adjusting knob extending out of the rocker arm frame.

In order to expand the range of flexion and extension of the ankle joint and make the range of flexion and extension continuously adjustable within a reasonable range, the angle β between the line between the rotation hole of the L-shaped rocker arm and the hole of the square foot plate and the longitudinal arm is 40 to 50 °, the length of the longitudinal arm is 110-130 mm, and the length of the longitudinal slot is 60-70 mm. The eccentric wheel is provided with 4 eccentric holes, and the distances between the 4 eccentric holes and the central hole are respectively selected as 9mm, 11mm, 13mm and 15mm.

In order to prevent the soles of the feet from leaving the feet, a lacing hole can be provided on the feet, so that the feet and the feet can be tied together with a tie. For aesthetics and safety, a cover plate can be installed outside the rocker frame.

When the ankle joint flexion and extension exerciser of the present invention is in use, the reduction motor drives the L-shaped rocker arm to make an arc-shaped reciprocating motion around the rotating shaft through the eccentric wheel, and the front end of the L-shaped rocker arm drives the foot plate to make an arc-shaped reciprocating motion, thereby forcing the heel Rotating around the ankle joint drives the muscles of the lower limbs to perform flexion and extension exercises, promotes the return of blood from the lower limbs to the heart, and can effectively prevent the formation of deep vein thrombosis of the lower limbs in surgical patients who have been bedridden for a long time. Due to the reasonable design, the range of flexion and extension can be adjusted. The range of flexion and extension can be adjusted coarsely and finely. The low-voltage DC planetary gear motor is selected, which is safe and reliable. Adjusting the motor speed can also adjust the frequency of flexion and extension. It is especially suitable for helping bedridden patients to perform ankle joint activities.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention:

Fig. 2 is a schematic diagram of the structure on the right side of accompanying drawing 1;

Fig. 3 is a schematic diagram of the L-shaped rocker arm structure in the present invention;

Fig. 4 is the structural representation of eccentric wheel among the present invention;

Fig. 5 is a structural schematic diagram of the motor seat in the present invention.

Detailed ways

Referring to accompanying drawings 1 to 5, 1 among the figures is the rotating shaft on the rocker arm frame on the left side, 2 is the adjusting knob, 3 is the foot plate, 4 is the tie hole, and 5 is the rotating shaft and the rocking arm frame on the right side. Rotation hole on the arm, 6 is the longitudinal arm of the L-shaped rocking arm, 7 is the longitudinal groove, and 8 is the eccentric shaft. 9 is the foot plate shaft, 10 is the square foot plate hole, 11 is the bottom plate, 12 is the bent arm of the L-shaped rocker arm, 13 is the rocker arm shaft and the rocker shaft hole, 14 is the eccentric wheel, 15 is the arc swing hole, and 16 is the motor seat 17 is a screw hole lifting block, 18 is a lifting screw, 19 is a rocking arm frame on the right side, 20 is a base, 21 is a guide hole lifting block, 22 is a lifting guide rod, 23 is a lifting guide hole, and 24 is a lifting screw. Ankle joint flexion and extension exerciser of the present invention, its structure as shown in Figure 1 and Figure 2, mainly comprises foot plate 3, reduction motor (being contained in the base 20, not drawing among the figure) and motor seat 16, also comprises base plate 11, Base 20, 2 rocker arms 19, 2 L-shaped rocker arms, eccentric wheel 14, rocker shaft 13, foot plate shaft 9, screw hole lifting block 17, 18 lifting screw, guide hole lifting block 21, lifting guide rod 22 and adjustment knob 2. The L-shaped rocker arm is composed of a longitudinal arm 6 and a curved arm 12, the upper end of the longitudinal arm is provided with a rotating hole 5, the middle and lower part of the longitudinal arm is provided with a longitudinal groove 7, and the lower end of the longitudinal arm 6 is connected with the curved arm 12 and is provided with a rocking shaft hole 13. The front end of the curved arm 12 is provided with a square foot plate hole 10, wherein the base 20 is installed on the base plate 11, and the lower parts of the two rocker brackets 19 are clamped on both ends of the base 20 and are fixedly connected with the base plate 11. The upper ends of the two rocker brackets are A rotating shaft 1 and 5 are provided respectively, and the upper ends of the two L-shaped rocker arms are hoisted on the two rotating shafts 1 and 5 through the rotating holes respectively, and the two ends of the rocker arm shaft 13 are fixed on the lower ends of the two L-shaped rocker arms. On the shaft hole, an arc-shaped swing hole 15 corresponding to the swing curve of the rocker shaft is provided at the bottom of the rocker frame. The lower part of the foot plate 3 is fixedly installed on the foot plate shaft 9, the geared motor is installed on the motor seat 16, the output shaft of the geared motor extends out of the motor seat 16 and is fixedly connected with the center hole 14-5 of the eccentric wheel 14, and the eccentric shaft 8 on the eccentric wheel 14 is installed In the longitudinal groove 7 of the L-shaped rocker arm, the screw hole lifting block 17 and the guide hole lifting block 21 are fixed on both sides of the motor base 16 in parallel. Referring to Figure 5, the lifting guide rod 22 is inserted into the lifting guide of the guide hole lifting block 21. In the hole 23 and installed on the rocker frame 19, the lifting screw rod 18 is screwed in the lifting screw hole 24 of the screw hole lifting block 17 and installed on the rocker frame 19, and one end of the lifting screw rod 18 is connected with the end of the rocker frame Adjustment Knob 2 is connected. Rotating the lifting screw rod 18 can make the screw hole lifting block 17 drive the motor and the eccentric wheel to rise or fall, and the flexion and extension range can be fine-tuned precisely. The motor adopts a low-voltage DC planetary gear reducer motor, and the flexion and extension frequency can also be adjusted by adjusting the motor speed.

In order to expand the range of flexion and extension of the ankle joint and make the range of flexion and extension continuously adjustable within a reasonable range, the angle β between the line between the rotation hole 5 of the L-shaped rocker arm and the square foot plate hole 10 and the longitudinal arm 6 is: 40-50°, as shown in Figure 3, and the length L of the longitudinal arm 6 is selected as 110-130 mm, and the length L1 of the longitudinal groove 7 is 60-70 mm. On described eccentric wheel 14, be provided with 4 eccentric holes 14-1, 14-2, 14-3, 14-4, 4 eccentric holes are respectively 9mm, 11mm, 13mm and 15mm apart from the central hole, as shown in Figure 4 As shown, the eccentric shaft is pre-installed on different eccentric holes, and the range of flexion and extension can be roughly adjusted in a large range.

In order to prevent the sole of the foot from leaving the foot plate, a lace hole 4 can be provided on the foot plate 3, so that the pin and the foot plate can be tied together with a lace.

Claims (4)

1. An ankle joint flexion and extension exerciser, comprising foot plate, geared motor and motor base, is characterized in that it also includes base plate, base, 2 rocking arm frames, 2 L-shaped rocking arms, eccentric wheel, rocking arm shaft, foot plate shaft , screw hole lifting block, lifting screw, guide hole lifting block, lifting guide rod and adjustment knob, the L-shaped rocker arm is composed of a longitudinal arm and a curved arm, the upper end of the longitudinal arm is provided with a rotation hole, and the middle and lower part of the longitudinal arm is provided with a longitudinal slot, the lower end of the longitudinal arm is connected with the bending arm and has a rocker hole, and the front end of the bending arm is provided with a square foot plate hole, wherein the base is installed on the bottom plate, and the lower parts of the two rocker brackets are clamped at both ends of the base and fixedly connected with the bottom plate , the upper ends of the two rocker arms are respectively equipped with a rotating shaft, the upper ends of the two L-shaped rocker arms are respectively hoisted on the two rotating shafts through the rotating holes, and the two ends of the rocker arm shafts are fixed on the rockers at the lower ends of the two L-shaped rocker arms On the shaft hole, an arc-shaped swing hole corresponding to the swing curve of the rocker shaft is provided at the lower part of the rocker frame. Installed on the foot plate shaft, the deceleration motor is installed on the motor base, the output shaft of the deceleration motor protrudes from the motor base and is fixedly connected with the center hole of the eccentric wheel, the eccentric shaft on the eccentric wheel is installed in the longitudinal groove of the L-shaped rocker arm, and the screw hole lifts The lifting block and the guide hole lifting block are fixed on both sides of the motor base in parallel, the lifting guide rod is inserted into the lifting guide hole of the guiding hole lifting block and installed on the rocker frame, and the lifting screw is screwed into the lifting screw hole of the screw hole lifting block and installed on the rocker arm frame, one end of the lifting screw is connected with the adjustment knob extending out of the rocker arm frame. 2. The ankle joint flexion and extension exerciser according to claim 1, characterized in that the angle between the line connecting the rotation hole of the L-shaped rocker arm and the square foot plate hole and the longitudinal arm is 40-50°, The length of the longitudinal arm is 110-130 mm, and the length of the longitudinal slot is 60-70 mm. 3. ankle joint flexion and extension exerciser as claimed in claim 1 or 2, is characterized in that described eccentric wheel is provided with 4 eccentric holes, and the distance of 4 eccentric holes and center hole is selected as 9mm, 11mm, 13mm and 15mm. 4. The ankle joint flexion and extension exerciser as claimed in claim 3, characterized in that the foot plate is provided with a lacing hole, and the outer side of the rocker arm frame is equipped with a cover plate.

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