Active motion training device for lower limb exercise

Abstract

The application discloses an active motion training device for lower limb exercise, and relates to the technical field of lower limb training devices, which comprises a base, an adjustable seat installed on the base, two self-extending massage mechanisms slidingly arranged on the base, and connecting pieces connecting the two self-extending massage mechanisms. When the pedal moves, the steel cable is pulled to move synchronously with the connecting piece, and the movement of the connecting piece controls the movement of the two self-extending massage mechanisms. At this time, the self-extending massage mechanism massages the lower limbs of the user, and can be attached to the lower limbs of the user, thereby increasing the massage effect on the lower limbs of the user. When the connecting piece moves, the resistance element provides resistance to increase the resistance when the user pushes the pedal to move, so as to realize the training function. The resistance element is inserted and is convenient to replace, so that different resistance elements can be replaced according to different users.

Description

Technical Field

[0001] This invention relates to the field of lower limb training equipment technology, and in particular to an active movement training device for lower limb exercise. Background Technology

[0002] Those who study traditional ethnic sports and physical education and training need to use training equipment when conducting lower limb training. Training equipment is a kind of exercise equipment used to help people with training needs to achieve the effects of auxiliary exercise and strengthening the body. Different equipment is used for different effects. For example, lower limb training equipment can be used for specialized training of the lower limbs and legs. It is convenient for users to exercise. In order to increase the comfort of using lower limb training equipment, some devices are equipped with massage mechanisms to massage the user's legs.

[0003] While some existing training devices are equipped with massage mechanisms to massage the user's legs, the different leg sizes of different users make it difficult for the massage mechanism to fit perfectly with the user's legs, which can easily affect the effectiveness of the massage. Summary of the Invention

[0004] To address the issue mentioned above, although the training device is equipped with a massage mechanism to massage the user's legs, the different leg sizes among different users make it difficult for the massage mechanism to fully conform to the user's legs, thus easily affecting the massage effect.

[0005] This invention provides an active exercise trainer for lower limb training, employing the following technical solution: An active exercise trainer for lower limb exercise includes a base with an adjustable seat mounted on it. Two self-retracting massage mechanisms are slidably disposed on the base and connected to each other via a connector. A resistance element is provided between the connector and the base. Two pedals are slidably disposed on the base and connected to the connector via steel cables. A blowing mechanism is provided within each self-retracting massage mechanism. A wave-shaped groove corresponding to the blowing mechanism is formed on the base. The movable end of the blowing mechanism extends out of the self-retracting massage mechanism and inserts into the wave-shaped groove, slidingly engaging with the inner wall of the wave-shaped groove.

[0006] Optionally, in the above-mentioned active exercise trainer for lower limb exercise, the adjustable seat includes an electric push rod and a seat body, the electric push rod is fixedly inserted into the base, and the extended end of the electric push rod is fixedly connected to the bottom of the seat body.

[0007] Optionally, in the above-mentioned active exercise trainer for lower limb exercise, the self-stretching massage mechanism includes a first horizontal plate and two second horizontal plates. The top surfaces of the two second horizontal plates are fixedly connected to vertical plates. The upper ends of the two vertical plates are fixedly connected to the two ends of the first horizontal plate. Two first sliding grooves are symmetrically opened on the first horizontal plate, and second sliding grooves are opened on the two second horizontal plates. An elastic massage element is slidably arranged in each of the two first sliding grooves. The lower end of the elastic massage element is inserted into the second sliding groove and slides in cooperation with the inner wall of the second sliding groove.

[0008] Optionally, in the above-mentioned active exercise trainer for lower limb exercise, the elastic massage component includes a massage column, the upper end of which is inserted into a first sliding groove and fixedly fitted with a first bushing, the outer wall of the first bushing being connected to the inner wall of the first sliding groove by a first spring, the lower end of which is inserted into a second sliding groove and fixedly fitted with a second bushing, the outer wall of the second bushing being connected to the inner wall of the second sliding groove by a second spring.

[0009] Optionally, in the above-mentioned active exercise trainer for lower limb exercise, the base has two first limiting grooves, the connector is movably inserted into the first limiting groove and slides in cooperation with the inner wall of the first limiting groove, the connector includes a fixed plate and a T-shaped block, the two ends of the fixed plate are respectively fixedly connected to the second horizontal plates of two self-retracting massage mechanisms, the T-shaped block is fixedly connected to the bottom surface of the fixed plate, and the T-shaped block is movably inserted into the first limiting groove and slides in cooperation with the inner wall of the first limiting groove.

[0010] Optionally, in the above-mentioned active exercise trainer for lower limb exercise, the resistance element is movably inserted into the first limiting groove. The resistance element includes a grooved plate and an insert plate. One end of the grooved plate abuts against the inner wall of the first limiting groove, one end of the insert plate abuts against the T-shaped block, and the other end of the insert plate is inserted into the grooved plate and connected to the inner wall of the grooved plate by a third spring.

[0011] Optionally, in the above-mentioned active exercise trainer for lower limb exercise, two second limiting grooves are symmetrically opened on the base, and limiting blocks are fixedly connected to the bottom surfaces of the two pedals. The limiting blocks are inserted into the second limiting grooves and slide in cooperation with the inner wall of the second limiting grooves.

[0012] Optionally, in the above-mentioned active exercise trainer for lower limb exercise, one end of the steel cable is inserted into the second limiting groove and fixedly connected to the limiting block, and the other end of the steel cable is inserted into the first limiting groove and fixedly connected to the T-shaped block.

[0013] Optionally, in the above-mentioned active exercise trainer for lower limb exercise, a piston chamber is provided in the vertical plate, the blowing mechanism is installed in the piston chamber, and an electric heating wire is provided in the piston chamber.

[0014] Optionally, in the above-mentioned active exercise trainer for lower limb exercise, the blowing mechanism includes a plurality of nozzles and a piston plate. The plurality of nozzles are fixedly inserted into the side wall of the vertical plate. The air inlet end of the nozzle is connected to the inner wall of the piston cavity. The piston plate is movably disposed in the piston cavity. A round rod is fixedly connected to the bottom surface of the piston plate. The lower end of the round rod extends out of the vertical plate, inserts into the corrugated groove, and slides in cooperation with the inner wall of the corrugated groove. The top surface of the piston plate is connected to the inner top wall of the piston cavity by a fourth spring.

[0015] In summary, the present invention has at least one of the following beneficial effects: When the pedal moves, it pulls the steel cable and the connecting piece to move synchronously. The movement of the connecting piece controls the movement of two self-retracting massage mechanisms. At this time, the self-retracting massage mechanisms massage the user's lower limbs. The self-retracting massage mechanisms can fit the user's lower limbs, thereby increasing the massage effect on the user's lower limbs. When the connector moves, resistance is provided through the resistance element to increase the resistance when the user pushes the pedal to move, thereby realizing the training function. The plug-in resistance element is more convenient to replace, making it easier to change the resistance element with different resistance according to different users, thereby increasing the training effect of the device when training users. When the vertical plate moves the piston plate and the round rod, the round rod slides along the inner wall of the corrugated groove. This causes the piston plate to reciprocate within the piston chamber, continuously pushing the airflow from the piston chamber into the nozzle. The airflow is then sprayed onto the patient's legs through the nozzle, keeping the user's legs dry and increasing the user's comfort when using the device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a partial three-dimensional structural schematic diagram of the self-stretching massage mechanism of the present invention; Figure 3 This is a partial three-dimensional unfolded cross-sectional view of the resistance element of the present invention; Figure 4 This is a partial three-dimensional unfolded cross-sectional view of the self-stretching massage mechanism of the present invention; Figure 5 This is a partial three-dimensional structural diagram of the base of the present invention.

[0017] In the diagram: 1. Base; 11. First limiting groove; 12. Second limiting groove; 2. Adjustable seat; 21. Electric push rod; 22. Seat body; 3. Self-retracting massage mechanism; 31. First horizontal plate; 32. Second horizontal plate; 33. Vertical plate; 34. First slide groove; 35. Second slide groove; 36. Elastic massage component; 361. Massage column; 362. First bushing; 363. First spring; 364. Second bushing; 365. Second spring; 37. Piston chamber; 4. Connector; 41. Fixing plate; 42. T-shaped block; 5. Resistance component; 51. Groove plate; 52. Insert plate; 53. Third spring; 6. Pedal; 61. Limiting block; 7. Steel cable; 8. Blowing mechanism; 81. Nozzle; 82. Piston plate; 83. Round rod; 84. Fourth spring; 9. Wavy groove. Detailed Implementation

[0018] The following is in conjunction with the appendix Figures 1-5 The present invention will be described in further detail below.

[0019] Please refer to the attached diagram in the instruction manual. Figures 1-5 This invention provides an embodiment of an active exercise trainer for lower limb training, comprising a base 1, on which an adjustable seat 2 is mounted to provide comfortable seating support for the user. The adjustable seat 2 includes an electric push rod 21 and a seat body 22. The electric push rod 21 is fixedly inserted into the base 1, and its extended end is fixedly connected to the bottom of the seat body 22. The extension and retraction of the electric push rod 21 is controlled by an external control switch. When the electric push rod 21 extends, it pushes the seat body 22 upward, raising its height. When the electric push rod 21 retracts, it moves the seat body 22 downward, lowering its height. Through precise control of the electric push rod 21, the height of the seat body 22 can be steplessly adjusted according to the user's height, leg length, and personal preferences, enabling the user to maintain the most comfortable sitting posture during lower limb exercises and avoiding deviations in posture or joint discomfort caused by improper seat body 22 height.

[0020] Two self-retractable massage mechanisms 3 are slidably mounted on the base 1. The two self-retractable massage mechanisms 3 are symmetrically arranged on the base 1 and can slide synchronously in the same direction. The self-retractable massage mechanism 3 includes a first horizontal plate 31 and two second horizontal plates 32. The top surfaces of the two second horizontal plates 32 are fixedly connected to vertical plates 33. The upper ends of the two vertical plates 33 are fixedly connected to the two ends of the first horizontal plate 31. Through the connecting action of the vertical plates 33, the first horizontal plate 31 and the two second horizontal plates 32 are connected into a rigid integral frame. The frame maintains a stable shape during movement and will not undergo relative displacement or deformation.

[0021] Two first sliding grooves 34 are symmetrically formed on the first horizontal plate 31, and two second sliding grooves 35 are formed on the two second horizontal plates 32. The first sliding grooves 34 and the second sliding grooves 35 are vertically aligned, that is, there is a second sliding groove 35 directly below each first sliding groove 34. An elastic massage element 36 is slidably arranged in each of the two first sliding grooves 34. The lower end of the elastic massage element 36 is inserted into the second sliding groove 35 and slides in cooperation with the inner wall of the second sliding groove 35. The vertical plate 33 facilitates the fixed connection between the two second horizontal plates 32 and the first horizontal plate 31. The cooperation between the first sliding grooves 34 and the second sliding grooves 35 facilitates the installation of the elastic massage element 36. Through the vertical alignment and guidance of the first sliding grooves 34 and the second sliding grooves 35, the elastic massage element 36 is installed between the first horizontal plate 31 and the second horizontal plate 32 and has a certain degree of floating freedom, so that it can adaptively conform to the contour of the user's leg during use.

[0022] The elastic massage component 36 includes a massage column 361. The surface of the massage column 361 is provided with massage protrusions to enhance the massage effect. The upper end of the massage column 361 is inserted into a first sliding groove 34 and fixedly fitted with a first bushing 362. The outer wall of the first bushing 362 is connected to the inner wall of the first sliding groove 34 via a first spring 363. The lower end of the massage column 361 is inserted into a second sliding groove 35 and fixedly fitted with a second bushing 364. The outer wall of the second bushing 364 is connected to the inner wall of the second sliding groove 35 via a second spring 365. The first spring 363 and the second spring 365... Under the action of elasticity, the first bushing 362 and the second bushing 364 respectively push the massage column 361, so that the massage column 361 always tends to move towards the user's legs, thus maintaining close contact with the user's legs during use. When the first horizontal plate 31 and the second horizontal plate 32 move, the massage column 361 massages the user's legs while in contact and rolling. At the same time, the cooperation of the first bushing 362 and the second bushing 364 allows the massage column 361 to rotate freely, thereby converting sliding friction into rolling friction, improving the smoothness and comfort of the massage.

[0023] It should be noted that the self-retractable massage mechanism 3 can automatically adjust according to the leg size of different users. Through the synergistic action of the first spring 363 and the second spring 365, the massage column 361 can adaptively clamp the sides of the user's legs, thereby enhancing the massage effect. In addition, the overall height of the self-retractable massage mechanism 3 is reasonably designed to avoid obstruction of the user's legs when performing knee bending movements, ensuring a smooth movement process. The two massage columns 361 act on the sides of the user's legs respectively, realizing simultaneous clamping and massage of both sides of the legs, further improving the massage effect.

[0024] Furthermore, the arrangement of the first bushing 362 and the second bushing 364 allows the massage column 361 to rotate freely around its own axis. When the self-retracting massage mechanism 3 moves back and forth along the base 1, relative movement occurs between the massage column 361 and the user's legs. Since the massage column 361 can rotate freely, the contact method between it and the legs changes from sliding friction to rolling friction, which reduces frictional resistance and improves the smoothness and comfort of the massage, avoiding skin discomfort that may be caused by sliding friction.

[0025] When the first horizontal plate 31 and the second horizontal plate 32 move, the massage column 361, while maintaining a close fit, performs a rolling massage on the user's legs as the mechanism moves. The two massage columns 361 act on the inner and outer sides of the user's legs respectively, achieving simultaneous clamping and massage on both sides of the legs. Compared with single-sided massage, the coverage area of ​​double-sided massage is larger and the massage intensity is more even, which can effectively relieve the tension of the leg muscles.

[0026] Two self-retractable massage mechanisms 3 are connected by a connector 4. The base 1 has two first limiting grooves 11. The connector 4 is movably inserted into the first limiting groove 11 and slides against the inner wall of the first limiting groove 11. The first limiting groove 11 guides and limits the movement of the connector 4, improving the stability of the connector 4 when it moves. When the connector 4 moves, it can drive the two self-retractable massage mechanisms 3 to move synchronously, so that the two self-retractable massage mechanisms 3 always maintain the same relative position.

[0027] The connector 4 includes a fixed plate 41 and a T-shaped block 42. Both ends of the fixed plate 41 are fixedly connected to the second horizontal plates 32 of the two self-retracting massage mechanisms 3, respectively. The T-shaped block 42 is fixedly connected to the bottom surface of the fixed plate 41. The T-shaped block 42 is movably inserted into the first limiting groove 11 and slides against the inner wall of the first limiting groove 11. The T-shaped block 42 is fixedly connected to the bottom surface of the fixed plate 41, and its cross-section is inverted T-shaped, matching the cross-sectional shape of the first limiting groove 11. The T-shaped block 42 is movably inserted into the first limiting groove 11, and its two side flanges... The T-block 42 engages with the side wall of the first limiting groove 11, thereby limiting the movement of the T-block 42 in the vertical direction and preventing it from coming out of the first limiting groove 11. Through the cooperation between the T-block 42 and the first limiting groove 11, the movement of the connecting piece 4 is restricted in the front-back direction, ensuring the straightness and stability of the movement trajectory. When the connecting piece 4 moves, the fixing plate 41 drives the two self-retracting massage mechanisms 3 to move synchronously, so that the two self-retracting massage mechanisms 3 always maintain the same displacement and the same movement speed, thereby ensuring that the massage effect on the left and right sides is consistent.

[0028] A resistance element 5 is provided between the connector 4 and the base 1. Two pedals 6 are slidably arranged on the base 1. Two second limiting grooves 12 are symmetrically opened on the base 1. Limiting blocks 61 are fixedly connected to the bottom surfaces of the two pedals 6. The limiting blocks 61 are inserted into the second limiting grooves 12 and slide in cooperation with the inner wall of the second limiting grooves 12. The cooperation structure between the second limiting grooves 12 and the limiting blocks 61 provides precise guidance for the movement of the pedals 6, so that the pedals 6 can only slide in a straight line in the front and back direction. On the other hand, it limits the travel range of the pedals 6 to prevent the pedals 6 from going off the track during the movement.

[0029] Two pedals 6 are connected to the connector 4 via steel cables 7. A resistance element 5 is movably inserted into the first limiting groove 11. The resistance element 5 includes a grooved plate 51 and an insert plate 52. One end of the grooved plate 51 abuts against the inner wall of the first limiting groove 11, and one end of the insert plate 52 abuts against the T-shaped block 42. The other end of the insert plate 52 is inserted into the grooved plate 51 and connected to the inner wall of the grooved plate 51 via a third spring 53. When the T-shaped block 42 moves under the pull of the steel cables 7, the T-shaped block 42 pushes the insert plate 52 further into the grooved plate 51, causing the third spring... When spring 53 is compressed and deformed, the elastic force of spring 53 acts in the opposite direction on T-block 42 through insert plate 52, and then is transmitted to pedal 6 through steel cable 7, forming a resistance that hinders the movement of pedal 6. The user needs to overcome this resistance to push pedal 6 to move, thereby achieving active exercise of the lower limb muscles. When the user releases pedal 6, the elastic force of spring 53 pushes insert plate 52 to reset, and then pushes T-block 42, connector 4 and self-stretching massage mechanism 3 back to the initial position. At the same time, the steel cable 7 pulls pedal 6 to reset, preparing for the next exercise.

[0030] Because the resistance element 5 adopts an insert-type installation structure, users can easily replace the resistance element 5 with a third spring 53 of different elastic coefficients, or replace the resistance element 5 with a different overall specification, according to the training intensity requirements. This allows for flexible adjustment of the training resistance. This design enables the same trainer to meet the training needs of users with different fitness levels, and it is applicable from low-resistance training in the early stage of rehabilitation to high-resistance training in the intensive training period.

[0031] One end of the steel cable 7 is inserted into the second limiting groove 12 and fixedly connected to the limiting block 61. The other end of the steel cable 7 is inserted into the first limiting groove 11 and fixedly connected to the T-shaped block 42. The steel cable 7 is L-shaped. When the user pushes the pedal 6 with his / her lower limbs, the pedal 6 pulls the steel cable 7 to move through the limiting block 61. The steel cable 7 then pulls the T-shaped block 42 and the fixed plate 41 to move synchronously. The fixed plate 41 then drives the two self-retracting massage mechanisms 3 to move synchronously, so that the self-retracting massage mechanisms 3 massage the user's legs while the user is exercising his / her lower limbs.

[0032] A piston chamber 37 is provided inside the vertical plate 33. The blowing mechanism 8 is installed in the piston chamber 37, and an electric heating wire is installed inside the piston chamber 37. The piston chamber 37 facilitates the installation of the blowing mechanism 8 and provides installation space for the blowing mechanism 8. The electric heating wire is used to heat the airflow in the piston chamber 37. When the external ambient temperature is low, the user can manually activate the electric heating wire through the controller installed on the outside of the vertical plate 33, so that the blowing mechanism 8 sprays out warm airflow. While the massage column 361 is massaging, it blows warm air onto the user's legs, improving the comfort of use in low-temperature environments. When the external ambient temperature is high, the user can turn off the electric heating wire, so that the blowing mechanism 8 blows out airflow at room temperature or low temperature, which helps to reduce the production of sweat on the surface of the legs during exercise, keep the legs dry, and further improve the comfort of exercise.

[0033] It should be noted that a controller for controlling the operation of the electric heating wire is installed on the outside of the vertical plate 33.

[0034] The blowing mechanism 8 includes several nozzles 81 and a piston plate 82. The nozzles 81 are fixedly inserted into the side wall of the vertical plate 33. The air inlet end of the nozzle 81 communicates with the inner wall of the piston cavity 37, and the air outlet end of the nozzle 81 faces the user's legs. The piston plate 82 is movably disposed in the piston cavity 37, and its outer wall forms a sealing sliding fit with the inner wall of the piston cavity 37 to ensure the compression and pushing efficiency of the airflow. A round rod 83 is fixedly connected to the bottom surface of the piston plate 82, and the lower end of the round rod 83 extends out of the vertical plate 33. The piston plate 82 is inserted into the wavy groove 9 and slides in contact with the inner wall of the wavy groove 9. The top surface of the piston plate 82 is connected to the inner top wall of the piston cavity 37 through a fourth spring 84. The fourth spring 84 is always in a compressed state, providing a downward preload to the piston plate 82, so that the lower end of the round rod 83 always keeps in contact with the inner wall of the wavy groove 9, and avoids the round rod 83 from dislodging from the wavy groove 9 due to vibration during the movement.

[0035] When the self-retracting massage mechanism 3 moves in the front-to-back direction under the drive of the connecting piece 4, the vertical plate 33 drives the piston plate 82 and the round rod 83 to move synchronously. During the movement, the lower end of the round rod 83 slides along the inner wall of the wave-shaped groove 9. Since the bottom surface of the wave-shaped groove 9 presents a wave profile with high and low undulations in the front-to-back direction, the round rod 83 is forced to generate vertical lifting and lowering motion while moving horizontally. The lifting and lowering motion of the round rod 83 drives the piston plate 82 to move up and down reciprocally in the piston cavity 37.

[0036] When the piston plate 82 moves downward, the volume of the piston chamber 37 decreases, the airflow inside the chamber is compressed, the air pressure increases, and the airflow is ejected through the nozzle 81. When the piston plate 82 moves upward, the volume of the piston chamber 37 increases, a negative pressure is formed inside the chamber, and external air is drawn into the piston chamber 37 through the nozzle 81 or the air inlet provided on the vertical plate 33. This process repeats itself. During the movement of the self-retracting massage mechanism 3, the reciprocating motion of the piston plate 82 continuously pushes the airflow in the piston chamber 37 to the nozzle 81, forming a continuous airflow jet.

[0037] The electric heating wire is manually controlled by a controller located on the outside of the vertical plate 33. When the external ambient temperature is low, the user can manually activate the electric heating wire through the controller. The electric heating wire generates heat and heats the airflow in the piston chamber 37, making the airflow ejected from the nozzle 81 warm. The warm airflow provides warmth to the user's legs through heat transfer and helps promote blood circulation in the legs. This works synergistically with the massage effect of the massage column 361 to improve comfort in low-temperature environments. When the external ambient temperature is high, the user can turn off the electric heating wire, making the airflow ejected from the nozzle 81 normal temperature airflow. This helps to dry the surface of the legs during exercise, reduce the accumulation of sweat, keep the skin dry, and further improve the comfort during exercise.

[0038] Working principle: Before using the lower limb exercise active movement trainer, the user first sits on the adjustable seat 2 and, according to their own height and leg length, starts the electric push rod 21 through the control switch to adjust the seat body 22 to a suitable height. The adjustment principle is: when the user's feet are on the pedal 6 and the knee joint is in a natural bent state, the angle between the thigh and the calf should be within a comfortable range of motion, avoiding the seat body 22 being too high, which would cause the knee joint to be overextended, or the seat body 22 being too low, which would cause the hip joint to be overflexed.

[0039] After the height of the seat body 22 is adjusted, the user places both feet on the two pedals 6 respectively, with both legs placed between the two self-retracting massage mechanisms 3. At this time, the massage columns 361 in the self-retracting massage mechanism 3 automatically move outward under the elastic force of the first spring 363 and the second spring 365, closely fitting the sides of the user's legs.

[0040] When starting the exercise, the user uses the lower limbs to push the pedal 6 forward. Under the force of the push, the pedal 6 slides forward along the second limiting groove 12, and the limiting block 61 moves forward accordingly, pulling the steel cable 7. The steel cable 7 transmits the tension to the T-shaped block 42, causing the T-shaped block 42 to move backward along the first limiting groove 11. The T-shaped block 42 drives the fixed plate 41 and the two self-retracting massage mechanisms 3 connected to it to move backward synchronously.

[0041] As the self-retracting massage mechanism 3 moves backward, the massage column 361 maintains close contact with the user's legs while performing a rolling massage on the legs as the self-retracting massage mechanism 3 moves. Since the massage column 361 can rotate freely, the relative movement between it and the legs is rolling friction, making the massage process smooth and comfortable. At the same time, the vertical plate 33 drives the round rod 83 of the blowing mechanism 8 to slide along the wave-shaped groove 9. The lifting and lowering movement of the round rod 83 drives the piston plate 82 to reciprocate in the piston chamber 37, continuously supplying air to the nozzle 81. The airflow is sprayed onto the user's legs through the nozzle 81. The user can choose whether to activate the electric heating wire according to the ambient temperature to obtain warm or room temperature airflow assistance.

[0042] As the T-block 42 moves backward, it pushes the insert plate 52 to further insert into the groove plate 51, compressing the third spring 53. The compression force of the third spring 53 acts in the opposite direction on the T-block 42 through the insert plate 52, and is then transmitted to the pedal 6 through the steel cable 7, forming a resistance that hinders the pedal 6 from moving forward. The user needs to overcome this resistance to complete the pushing action of the pedal 6, thereby achieving active strength training of the lower limb muscles.

[0043] After the user completes one push-up action, relaxes the lower limb strength, and the compression force of the third spring 53 pushes the insert plate 52 to reset. The insert plate 52 pushes the T-shaped block 42 to move forward. The T-shaped block 42 drives the fixed plate 41 and the self-retracting massage mechanism 3 to move forward and reset. At the same time, the steel cable 7 pulls the pedal 6 to move backward and reset. The user can repeat the above actions to perform continuous lower limb flexion and extension exercises.

[0044] During exercise, users can adjust the training intensity by changing the resistance components 5 with different resistance specifications according to their physical condition and training goals. For users in the early stages of rehabilitation, the third spring 53 with a smaller elastic coefficient can be selected to obtain lower training resistance; for users who need to strengthen their training, the third spring 53 with a larger elastic coefficient can be selected to obtain higher training resistance. At the same time, users can adjust the seat height by adjusting the electric push rod 21 to change the range of lower limb flexion and extension angles, thereby adjusting the focus of the exercise. When the seat body 22 is lower, the knee flexion angle is greater, focusing on the front thigh muscles; when the seat body 22 is higher, the knee flexion angle is smaller, focusing on the calf muscles.

[0045] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An active exercise trainer for lower limb exercise, comprising a base (1), characterized in that: An adjustable seat (2) is installed on the base (1). Two self-retracting massage mechanisms (3) are slidably arranged on the base (1). The two self-retracting massage mechanisms (3) are connected by a connecting member (4). A resistance member (5) is provided between the connecting member (4) and the base (1). Two pedals (6) are slidably arranged on the base (1). The two pedals (6) are connected to the connecting member (4) by a steel cable (7). A blowing mechanism (8) is provided inside the self-retracting massage mechanism (3). A wave-shaped groove (9) corresponding to the blowing mechanism (8) is opened on the base (1). The movable end of the blowing mechanism (8) extends out of the self-retracting massage mechanism (3) and inserts into the wave-shaped groove (9) and slides in cooperation with the inner wall of the wave-shaped groove (9).

2. The active exercise trainer for lower limb training according to claim 1, characterized in that: The adjustable seat (2) includes an electric push rod (21) and a seat body (22). The electric push rod (21) is fixedly inserted into the base (1), and the extended end of the electric push rod (21) is fixedly connected to the bottom of the seat body (22).

3. The active exercise trainer for lower limb training according to claim 1, characterized in that: The self-stretching massage mechanism (3) includes a first horizontal plate (31) and two second horizontal plates (32). The top surfaces of the two second horizontal plates (32) are fixedly connected to vertical plates (33). The upper ends of the two vertical plates (33) are fixedly connected to the two ends of the first horizontal plate (31). The first horizontal plate (31) has two symmetrical first sliding grooves (34). The two second horizontal plates (32) have second sliding grooves (35). The two first sliding grooves (34) are slidably arranged with elastic massage elements (36). The lower end of the elastic massage element (36) is inserted into the second sliding groove (35) and slides in cooperation with the inner wall of the second sliding groove (35).

4. The active movement trainer for lower limb exercise according to claim 3, characterized in that: The elastic massage component (36) includes a massage column (361), the upper end of which is inserted into a first slide groove (34) and a first bushing (362) is fixedly fitted thereon. The outer wall of the first bushing (362) is connected to the inner wall of the first slide groove (34) by a first spring (363). The lower end of the massage column (361) is inserted into a second slide groove (35) and a second bushing (364) is fixedly fitted thereon. The outer wall of the second bushing (364) is connected to the inner wall of the second slide groove (35) by a second spring (365).

5. The active exercise trainer for lower limb training according to claim 3, characterized in that: The base (1) has two first limiting grooves (11). The connector (4) is movably inserted into the first limiting groove (11) and slides in cooperation with the inner wall of the first limiting groove (11). The connector (4) includes a fixing plate (41) and a T-shaped block (42). The two ends of the fixing plate (41) are fixedly connected to the second horizontal plate (32) of the two self-stretching massage mechanisms (3). The T-shaped block (42) is fixedly connected to the bottom surface of the fixing plate (41). The T-shaped block (42) is movably inserted into the first limiting groove (11) and slides in cooperation with the inner wall of the first limiting groove (11).

6. The active movement trainer for lower limb exercise according to claim 5, characterized in that: The resistance element (5) is movably inserted into the first limiting groove (11). The resistance element (5) includes a groove plate (51) and an insert plate (52). One end of the groove plate (51) abuts against the inner wall of the first limiting groove (11), and one end of the insert plate (52) abuts against the T-shaped block (42). The other end of the insert plate (52) is inserted into the groove plate (51) and connected to the inner wall of the groove plate (51) by a third spring (53).

7. The active movement trainer for lower limb exercise according to claim 6, characterized in that: Two second limiting grooves (12) are symmetrically opened on the base (1). The bottom surfaces of the two pedals (6) are fixedly connected to limiting blocks (61). The limiting blocks (61) are inserted into the second limiting grooves (12) and slide in cooperation with the inner wall of the second limiting grooves (12).

8. The active movement trainer for lower limb exercise according to claim 7, characterized in that: One end of the steel cable (7) is inserted into the second limiting groove (12) and fixedly connected to the limiting block (61), and the other end of the steel cable (7) is inserted into the first limiting groove (11) and fixedly connected to the T-shaped block (42).

9. The active movement trainer for lower limb exercise according to claim 3, characterized in that: A piston chamber (37) is provided in the vertical plate (33), and the blowing mechanism (8) is installed in the piston chamber (37). An electric heating wire is provided in the piston chamber (37).

10. The active movement trainer for lower limb exercise according to claim 9, characterized in that: The purging mechanism (8) includes several nozzles (81) and a piston plate (82). Several nozzles (81) are fixedly inserted into the side wall of the vertical plate (33). The air inlet end of the nozzle (81) is connected to the inner wall of the piston cavity (37). The piston plate (82) is movably disposed in the piston cavity (37). A round rod (83) is fixedly connected to the bottom surface of the piston plate (82). The lower end of the round rod (83) extends out of the vertical plate (33) and inserts into the corrugated groove (9) and slides in cooperation with the inner wall of the corrugated groove (9). The top surface of the piston plate (82) is connected to the inner top wall of the piston cavity (37) by a fourth spring (84).

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