Lower limb exercise device

Abstract

The invention designs a lower limb exercise device which comprises a left foot exercise device and a right foot exercise device, and the left foot exercise device and the right foot exercise device have the same structure. The left foot exercise device comprises a base, an adjusting device and a massage assembly. The adjusting device is movably installed at the upper end of the base, and the massage assembly is movably installed at the upper end of the adjusting device. The position of the massage assembly can be adjusted through the arranged adjusting device, specifically, the massage assembly can move up and down front and back and move up and down left and right, and back stretching, plantar flexion, eversion and introversion of ankles are achieved through the movements; meanwhile, the rotating disc arranged on the base rotates, and the massage assembly is controlled to rotate by controlling the rotation of the rotating disc, so that the ankles extend outwards and inwards.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a lower limb exercise device. Background Technology

[0002] Patients who are bedridden or have limited mobility face a variety of health risks, among which deep vein thrombosis (DVT), muscle atrophy, and foot drop are particularly common and serious problems. These complications not only increase patient suffering but can also further impact their quality of life and even their lives. To effectively prevent these adverse consequences, professional medical teams and rehabilitation therapists emphasize the importance of appropriate lower limb exercises. In particular, the ankle area, as a key node for lower limb blood circulation, can effectively promote blood circulation and strengthen muscles through targeted exercises, thereby significantly reducing the risk of deep vein thrombosis and preventing muscle atrophy due to lack of activity. At the same time, regular ankle and lower limb exercises can also help maintain normal foot posture and effectively prevent foot drop.

[0003] Currently, there are also corresponding exercise devices. For example, patent publication number CN111870894A discloses a lower limb active exercise device. After fixing the foot to the pedal with the first fixing device, the foot actively steps on the pedal to inflate and deflate the pressure airbag to achieve the purpose of exercise, which is convenient for patients to a certain extent. At the same time, patent publication number CN118615652A discloses an ankle rehabilitation device. This device achieves the purpose of exercise by providing resistance through the first elastic band and the second elastic band respectively. It can drive the patient's ankle joint to return to its original position and provide sufficient support for the patient's ankle joint and foot, thereby improving the effect of the patient's ankle joint rehabilitation exercise.

[0004] However, both of the aforementioned devices have some problems. When exercising the lower limbs, they can only perform dorsiflexion and plantarflexion movements on the ankle, resulting in a limited range of exercises. They cannot perform eversion, inversion, abduction, or extension movements of the ankle joint to better promote circulation. Furthermore, they cannot simulate the movement state of a person walking normally, thus failing to effectively promote blood circulation and truly achieve the effects of preventing calf atrophy, preventing thrombosis, and providing lower limb massage and relaxation.

[0005] Therefore, a lower limb exercise device that can both massage the calves and provide multiple ways to move the ankle joint is needed to solve the above problems. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention designs a lower limb exercise device. When in use, this device can not only perform dorsiflexion and plantar flexion movements on the user's ankles, but also eversion, inversion, abduction, and extension movements; it can achieve multi-functional exercise effects, promote blood circulation, and truly achieve the effects of preventing calf atrophy, preventing thrombosis, and providing lower limb massage and relaxation.

[0007] To achieve the above-mentioned technical effects, the present invention discloses a lower limb exercise device, including: a left foot exercise device and a right foot exercise device, and the left and right foot exercise devices have the same structure; the left foot exercise device includes: a base, an adjustment device, and a massage component; the adjustment device is movably mounted on the upper end of the base, and the massage component is movably mounted on the upper end of the adjustment device; The adjustment device includes a first motor and a second motor arranged in parallel, a power module, a connecting rod, and a transmission ring. The first motor and the second motor are mounted on the upper end of the base. The power module is fixedly mounted on the upper end of the motors. A first universal joint is fixedly mounted in the middle of the upper end of the power module. The other end of the first universal joint is connected to the lower end of the massage component. A second universal joint and a third universal joint are symmetrically arranged at the bottom end of the massage component, located at the rear end of the first universal joint. The transmission ring is fixedly mounted on the output shafts of the first motor and the second motor respectively. The upper end of the connecting rod is connected to the second universal joint and the third universal joint respectively, and the lower end is movably connected to the extension end of the transmission ring. By simultaneously controlling the same-direction and opposite-direction rotation of the first motor and the second motor, the forward and backward, left and right flipping movements of the massage component are controlled to achieve dorsiflexion, plantar flexion, eversion, and inversion movements of the ankle. Furthermore, a rotating disk is installed at the upper center of the base, and a first motor and a second motor arranged in parallel are fixedly installed at the upper end of the rotating disk; by controlling the rotation of the rotating disk, the rotation of the massage component is controlled to realize the abduction and extension movements of the ankle. Furthermore, the massage assembly includes: a foot pedal, a fixing plate, and a massage cover; the foot pedal is installed on the upper end of the first universal joint, the second universal joint, and the third universal joint; the fixing plate is fixedly installed at the rear end of the foot pedal, and the massage cover is fixedly installed at the upper end of the fixing plate; a plurality of airbags are fixedly installed inside the massage cover, and the massage of the calf is achieved by inflating and deflating the airbags. Furthermore, the fixing plate is a relatively rigid structure used to support the ankle, while the massage cover is a relatively soft structure used to create a wrapping massage effect; Furthermore, a control module is fixedly installed at the front end of the power module, and an air pump is fixedly installed at the other end of the opposite control module. An air pipe is installed at the air outlet of the air pump, and the air pipe extends upward to connect to the airbag of the massage cover. Furthermore, a first fixing strap is fixedly installed on the outer side of the massage cover, the upper outer periphery of the foot pedal is raised upward, and a second fixing strap is fixedly installed on one side of the front end of the foot pedal. Both the first fixing strap and the second fixing strap are fixed by Velcro.

[0008] The beneficial effects of this invention are: This invention designs a lower limb exercise device, including a left foot exercise device and a right foot exercise device, with the left and right foot exercise devices having the same structure; the left foot exercise device includes: a base, an adjustment device, and a massage component; the adjustment device is movably mounted on the upper end of the base, and the massage component is movably mounted on the upper end of the adjustment device; the position of the massage component can be adjusted by the adjustment device, specifically, the massage component can be moved forward and backward up and down, and left and right up and down, through which the dorsiflexion, plantarflexion, eversion, and inversion movements of the ankle are achieved; Meanwhile, the rotating disc on the base rotates, and the rotation of the disc controls the rotation of the massage components to achieve abduction and extension movements of the ankle. In addition, the invention is equipped with a corresponding massage component to massage the user's calves. The massage effect is achieved by inflating and deflating the airbags, thereby promoting blood circulation and truly achieving the effects of preventing calf atrophy, preventing thrombosis, and relaxing the lower limbs. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0010] Figure 1 This is a schematic diagram of the overall structure of a lower limb exercise device; Figure 2 This is a schematic diagram of the overall structure of a single leg of a lower limb exercise device. Figure 3 This is a schematic diagram of the overall structure of a lower limb exercise device viewed from behind on a single leg. Figure 4 This is a side view of a single leg of a lower limb exercise device. Figure 5 This is a schematic diagram of a single-leg explosion of a lower limb exercise device. Figure 6 This is an overall schematic diagram of another structure of Embodiment 2 of a lower limb exercise device.

[0011] The attached diagram lists the components represented by each number as follows: 1-Base, 11-Rotating disc, 2-Adjusting device, 21-First motor, 22-Connecting rod, 23-Power module, 231-Support rod, 24-Second motor, 25-Air pump, 251-Air pipe, 26-Transmission ring, 3-Massage assembly, 30-Foot pedal, 31-Fixing plate, 32-Massage cover, 321-Airbag, 322-First fixing strap, 33-Second fixing strap, 34-First universal joint, 35-Second universal joint, 36-Third universal joint, 4-Control module, 5-Receiving rod. Detailed Implementation

[0012] Example 1 This invention discloses a lower limb exercise device, comprising: a left foot exercise device and a right foot exercise device, wherein the left and right foot exercise devices have the same structure, meaning that the structures are identical, the difference being the use of the left and right feet; here, the structure of one of them is used as an example. Specifically, the left foot exercise device comprises: a base 1, an adjustment device 2, and a massage component 3; the adjustment device 2 is movably mounted on the upper end of the base 1, and the massage component 3 is movably mounted on the upper end of the adjustment device 2. The position of the massage component 3 can be adjusted by the adjustment device 2. Specifically, the massage component 3 can move forward and backward, up and down, and left and right, up and down, thereby achieving dorsiflexion, plantar flexion, eversion, and inversion movements of the foot and ankle. Specifically, the adjustment device 2 includes a first motor 21 and a second motor 24 arranged in parallel, a power module 23, a connecting rod 22, and a transmission ring 26. The first motor 21 and the second motor 24 are mounted on the upper end of the base 1, and the power module 23 is fixedly mounted on the upper end of the motors. A first universal joint 34 is fixedly mounted on the middle of the upper end of the power module 23. The other end of the first universal joint 34 is connected to the lower end of the massage component 3; at the rear end of the first universal joint 34, the bottom end of the massage component 3 is also symmetrically provided with a second universal joint 35 and a third universal joint 36; the transmission ring is fixedly installed on the output shafts of the first motor 21 and the second motor 24 respectively; the upper end of the connecting rod 22 is connected to the second universal joint 35 and the third universal joint 36 respectively, and the lower end is movably connected to the extension end of the transmission ring; by simultaneously controlling the same-direction and opposite-direction rotation of the first motor 21 and the second motor 24, the forward and backward, left and right flipping movements of the massage component 3 are controlled to realize the dorsiflexion, plantarflexion, eversion, and inversion movements of the ankle; The above-mentioned motion process of simultaneously controlling the first motor 21 and the second motor 24 to rotate in the same and opposite directions is as follows: When the first motor 21 and the second motor 24 are simultaneously controlled to rotate in the same direction, the transmission ring 26 will simultaneously drive the connecting rod 22 to move upward or downward. At the same time, since the second universal joint 35 and the third universal joint 36 at the upper end will move accordingly, the foot pedal 30 can tilt forward (the first universal joint 34 moves at the same time); similarly, the foot pedal 30 can tilt backward to realize the dorsiflexion and plantarflexion of the foot; when the first motor 21 and the second motor 24 are simultaneously controlled to rotate in opposite directions, since they are controlled by two motors respectively, one connecting rod 22 will move upward and the other will move downward. The foot pedal 30 at the upper end will tilt to the left or right to realize the eversion and inversion of the ankle.

[0013] In addition, in this embodiment, a rotating disk 11 is installed at the upper center of the base 1, and a first motor 21 and a second motor 24 are fixedly installed in parallel at the upper end of the rotating disk 11. The rotation of the massage component 3 is controlled by controlling the rotation of the rotating disk 11 to achieve the abduction and extension movement of the ankle. Specifically, the rotation of the rotating disk 11 is controlled by a motor (which belongs to the prior art and is not shown in the figure), thereby achieving the overall rotation function.

[0014] Example 2 In this embodiment, a corresponding massage component 3 is provided to massage the user's calves. The massage effect is achieved by inflating and deflating the airbags 321, thereby promoting blood circulation and achieving the effects of preventing calf atrophy, preventing thrombosis, and relaxing the lower limbs. Specifically, the massage component 3 includes: a foot pedal 30, a fixing plate 31, and a massage cover 32. The foot pedal 30 is installed on the upper end of the first universal joint 34, the second universal joint 35, and the third universal joint 36. The fixing plate 31 is fixedly installed at the rear end of the foot pedal 30, and the massage cover 32 is fixedly installed at the upper end of the fixing plate 31. Several airbags 321 are fixedly installed inside the massage cover 32. The massage of the calves is achieved by inflating and deflating the airbags 321. At the same time, in order to achieve both a massage effect and a support function, the fixing plate 31 is a relatively rigid structure to support the ankle, and the massage cover 32 is a relatively soft structure to form a wrapping massage effect. Meanwhile, the connection between the fixing plate 31 and the massage cover 32 is made of a flexible material to ensure normal massage and exercise use.

[0015] In addition, this embodiment provides another form for ensuring normal massage and exercise use, specifically as follows: Figure 6As shown, the massage cover 32 and the fixing plate 31 are not connected. Instead, the outside of the massage cover 32 is directly connected to the base 1 through the supporting rod 5 (at this time, the massage cover 32 is a rigid structure). In this way, when the adjustment component is rotated or flipped outward, it can be used directly without interference. Of course, the first fixing strap 322 cannot be fixed too firmly; it only needs to have a limiting function to ensure the movement space of the lower leg.

[0016] Example 3 In this embodiment, a control module 4 is fixedly installed at the front end of the power module 23. The power module 23 is described as having a power source installed internally and a corresponding outer casing for support. An air pump 25 is fixedly installed at the other end of the control module 4. An air pipe 251 is installed at the air outlet of the air pump 25, extending upwards to connect to the airbag 321 of the massage outer cover 32. The massage effect is achieved by inflating and deflating the air pump 25. Simultaneously, the control module 4 controls the simultaneous rotation of the first motor 21 and the second motor 24 in the same or opposite directions, as well as the operation of the air pump 25. The power module 23 can be externally charged for continuous use. Controlling the operation of the first motor 21, the second motor 24, and the air pump 25 via the control module 4 is prior art and will not be elaborated further here.

[0017] In addition, in this embodiment, based on the massage cover 32 described in embodiment 2, a first fixing strap 322 is fixedly installed on the outer side of the massage cover 32. The first fixing strap 322 is mainly used to fix the legs. The upper outer periphery of the foot pedal 30 is raised upward. The raised structure can limit the user's feet. A second fixing strap 33 is fixedly installed on one side of the front end of the foot pedal 30. The second fixing strap 33 is mainly used to fix the user's feet. Both the first fixing strap 322 and the second fixing strap 33 are fixed by Velcro.

[0018] Based on the above embodiments 1-3, the operating principle of this device is as follows: Before use, the device needs to be checked to ensure that the left and right foot exercise devices are placed stably, the base 1 is not shaking, the power module 23 has sufficient power, the control module 4, air pump 25, and air pipe 251 are properly connected, the airbag 321 is not damaged or leaking, and the Velcro fasteners of the first fixing strap 322 and the second fixing strap 33 are firmly attached without loosening; the user maintains a sitting posture, places the lower leg and foot naturally above the device, ensures that the ankle is in contact with the fixing plate 31 (rigid support structure), the sole of the foot is placed in the raised area of ​​the foot pedal 30, and the lower leg naturally extends into the massage cover 32. Next, perform the fixation operation by tightening the second fixing strap 33 on the foot pedal 30 and securing the foot with Velcro to ensure that the foot does not slip off and avoids excessive pressure on blood circulation in the foot. Then, adjust the massage cover 32 (soft wrapping structure) to completely wrap the lower part of the calf, tighten the first fixing strap 322 on the outside, and secure it with Velcro to ensure that the massage cover 32 fits the calf and does not affect subsequent ankle movements. During exercise, the automatic or manual mode can be selected via control module 4 (including corresponding function buttons). In the basic ankle movement mode, the first motor 21 and the second motor 24 start and rotate in the same direction, driving the transmission ring 26 to rotate synchronously. Through the connecting rod 22, the second universal joint 35 and the third universal joint 36 move upward. Combined with the steering compensation of the first universal joint 34, the front end of the foot pedal 30 flips upward, and the ankle naturally dorsiflexes (toes pointing upward), holding for 5-10 seconds before returning to the starting position. During plantar flexion, the first motor 21 and the second motor 24 rotate in opposite directions but in the same direction (opposite to dorsiflexion). The transmission ring 26 drives the connecting rod 22 to push the second universal joint 35 and the third universal joint 36 downward, the front end of the foot pedal 30 flips downward, and the ankle naturally plantarflexes (toes pressing downward), holding for 5-10 seconds. After resetting; during the eversion movement, the first motor 21 rotates forward and the second motor 24 rotates in the opposite direction. The transmission ring 26 drives one side connecting rod 22 to move upward and the other side downward. Through the misaligned transmission of the second universal joint 35 and the third universal joint 36, the right side of the foot pedal 30 flips upward and the left side tilts downward, and the ankle naturally everts (the sole of the foot tilts outward). After holding for 5-10 seconds, it resets; during the inversion movement, the first motor 21 rotates in the opposite direction and the second motor 24 rotates forward. The transmission ring 26 drives one side connecting rod 22 to move downward and the other side upward. The left side of the foot pedal 30 flips upward and the right side tilts downward, and the ankle naturally inverts (the sole of the foot tilts inward). After holding for 5-10 seconds, it resets. In the ankle extension exercise mode, the rotating disc 11 at the top of the base 1 starts to rotate (clockwise for abduction, counterclockwise for extension), which drives the adjustment device 2 and the massage component 3 above to rotate as a whole. The ankle moves in abduction (the foot spreads outwards towards the outside of the body) or extension (the foot pulls inwards towards the inside of the body) synchronously with the foot pedal 30. Each rotation angle is controlled within 30° to avoid overstretching. The ankle returns to its original position after exercise.The calf massage mode can be activated simultaneously with ankle exercises or independently. The air pump 25 starts, inflating several airbags 321 inside the massage cover 32 through the air tube 251. Once inflated, the airbags 321 apply gentle pressure to the calf skin. After inflating to the preset pressure, the air pump 25 stops inflating and begins to deflate, causing the airbags 321 to contract. This "inflation-pressure holding-deflation" cycle repeats, providing a squeezing massage to the calf. The duration of each massage session can be set via the control module 4. After the workout is complete, the device is stopped via the control module 4. All motors and air pumps stop working, the airbags are fully deflated, the first and second fixing straps 322 are released, the user slowly removes their lower limbs, and the device's power is turned off.

[0019] In conjunction with the above process, this embodiment further explains the usage process and principle. During multi-directional ankle movement, the dorsiflexion / plantar flexion principle uses the first universal joint 34 as the central fulcrum. When the first motor 21 and the second motor 24 rotate in the same direction, the transmission ring 26 applies a pulling or pushing force in the same direction to the second universal joint 35 and the third universal joint 36 through the connecting rod 22, causing the foot pedal 30 to rotate around its front-back axis, thereby driving the ankle to perform dorsiflexion (toe pointing upwards) or plantar flexion (toe pointing downwards) movements, simulating the core flexion and extension movements of the ankle during normal walking. The eversion / inversion principle is that when the first motor 21 and the second motor 24 rotate in opposite directions, the transmission ring 26 applies a counterforce (one side upwards, one side downwards) to the second universal joint 35 and the third universal joint 36 through the connecting rod 22, causing the foot pedal 30 to rotate around its left-right axis. The ankle tilts with the pedal to perform eversion or inversion movements, specifically exercising the lateral muscles around the ankle joint and promoting joint flexibility; abduction / The inward extension principle involves the rotating disc 11 driving the adjustment device 2 and massage component 3 to rotate as a whole. The foot pedal 30 rotates synchronously with the rotating disc, causing the ankle to perform abduction (away from the body midline) or inward extension (closer to the body midline) movements on the horizontal plane. This supplements the horizontal movement lacking in traditional devices, fully activating the lower limb muscles and promoting blood circulation. The calf massage principle involves the control module 4 controlling the inflation and deflation rhythm of the air 25. When the air bladder 321 inflates, it applies uniform pressure to the calf, squeezing the calf muscles and blood vessels to promote venous blood return. When deflated, the pressure is released, the muscles and blood vessels relax, and fresh blood is drawn in, forming a "squeeze-relaxation" cyclical massage effect. This effectively prevents calf muscle atrophy and lower limb venous thrombosis, while relieving muscle tension. In the structural synergy principle, the universal joints (first, second, and third universal joints) achieve multi-angle steering compensation, ensuring that the foot pedal 30 always remains in contact with the ankle when flipping forward, backward, left, and right, and rotating as a whole, avoiding any feeling of jamming or pulling; the fixed plate 31 (rigid structure) provides stable support for the ankle, preventing ankle misalignment during exercise; the massage cover 32 (soft structure) works with the airbag 321 to achieve flexible wrapping massage, ensuring the massage effect without affecting multi-directional ankle movement, forming a "support-wrap" synergy; the power module 23 provides continuous power to the motor, air pump, and control module; the control module 4, as the core control unit, precisely coordinates the motor rotation, the rotating disc speed, and the air pump inflation and deflation rhythm, ensuring that all functional modules operate synchronously, improving the safety and effectiveness of exercise and massage.

[0020] The preferred embodiments of the present invention disclosed above are only for the purpose of illustrating the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation described.

Claims

1. A lower body exercise device, characterized by, The utility model relates to a kind of left and right foot exercise devices, comprising: Left foot exercise device and right foot exercise device, and left and right foot exercise device have the same configuration; The left foot exercise device comprises a base, an adjusting device, and a massage assembly;The adjusting device is movably mounted on the upper end of the base, and the massage assembly is movably mounted on the upper end of the adjusting device; The adjusting device comprises a first motor and a second motor arranged in parallel, a power module, a connecting rod, and a transmission ring;The first motor and the second motor are mounted on the upper end of the base, the power module is fixedly mounted on the upper end of the motor, a first universal joint is fixedly mounted on the upper end of the power module, and the other end of the first universal joint is connected to the lower end of the massage assembly;A second universal joint and a third universal joint are symmetrically arranged on the bottom end of the massage assembly at the rear end of the first universal joint;The transmission ring is fixedly mounted on the output shaft of the first motor and the second motor, respectively;The upper end of the connecting rod is connected to the second universal joint and the third universal joint, respectively, and the lower end is movably connected to the extended end of the transmission ring;By simultaneously controlling the same direction and reverse rotation of the first motor and the second motor, the forward and backward, left and right flipping movements of the massage assembly are controlled to realize the dorsiflexion, plantar flexion, eversion, and inversion movements of the ankle; The massage assembly comprises a foot pedal, a fixed plate, and a massage cover;The foot pedal is mounted on the upper end of the first universal joint, the second universal joint, and the third universal joint;The fixed plate is fixedly mounted on the rear end of the foot pedal, and the massage cover is fixedly mounted on the upper end of the fixed plate;A plurality of air bags are fixedly mounted in the massage cover, and the massage of the lower leg is realized by inflating and deflating the air bags.

2. The lower body exercise device of claim 1, wherein, The fixed assembly comprises a rotating disc mounted on the upper end of the base, and a first motor and a second motor arranged in parallel are fixedly mounted on the upper end of the rotating disc;By controlling the rotation of the rotating disc, the rotation of the massage assembly is controlled to realize the abduction and adduction movements of the ankle.

3. The lower body exercise device of claim 2, wherein, The fixed plate is a relatively hard structure for supporting the ankle, and the massage cover is a relatively soft structure for forming a wrapping massage effect.

4. The lower body exercise device of claim 1, wherein, A control module is fixedly mounted on the front end of the power module, and an air pump is fixedly mounted on the other end of the control module;An air pipe is mounted on the air outlet end of the air pump, and the air pipe extends upwardly to connect to the air bags of the massage cover.

5. The lower body exercise device of claim 4, wherein, A first fixing belt is fixedly mounted on the outside of the massage cover, the upper end of the foot pedal is raised upwardly, and a second fixing belt is fixedly mounted on one side of the front end of the foot pedal;Both the first fixing belt and the second fixing belt are fixed by magic tape.

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