A leg exerciser device

Abstract

The application relates to the technical field of sports equipment, in particular to a leg training device, which is characterized in that a pressing plate is detachably arranged at the end of a rotating arm, and the pressing plate is allowed to be switched and arranged between the facing side and the opposite side of the rotating arm, so that two training modes of thigh abduction (external pressure) and thigh adduction (internal pressure) can be simultaneously realized on one device. The scheme overcomes the limitation that the training equipment in the prior art is single in function and multiple devices need to be purchased to realize comprehensive training, thereby significantly saving space and economic cost. Meanwhile, the direct connection of the resistance generating device and the rotating arm ensures that the force transmission path is direct and efficient, and the training fluency and effectiveness are improved. In addition, the resistance generating device can provide adjustable resistance, thereby meeting different training intensity requirements and improving user experience.

Description

Technical Field

[0001] This application relates to the field of sports equipment technology, and more specifically, to a leg training device. Background Technology

[0002] As the core source of strength for the human body, leg muscle training is of great significance for improving athletic performance, promoting health and body shaping, and rehabilitation. Among the many leg training machines, those targeting the adductor and abductor muscles of the thigh are particularly common, mainly used to improve leg shape, enhance hip joint stability, and strengthen core muscles.

[0003] Most leg training equipment on the market is currently single-function. The most common type is the leg-clamping machine, which works by having the user clamp their legs together on a movable arm, compressing a spring or other resistance element via a linkage or slider mechanism to train the adductor muscles. However, this type of equipment has significant limitations: First, it offers only one training mode—either adduction (clamping) or abduction (opening). Users wishing to comprehensively train both the inner and outer leg muscles need to purchase two different machines, consuming considerable space and increasing costs. Second, some machines have complex designs, resulting in low transmission efficiency and indirect force transmission paths, affecting the smoothness and effectiveness of the training. Third, many machines lack convenient and intuitive resistance adjustment mechanisms, or the adjustment methods are cumbersome, leading to a poor user experience.

[0004] Therefore, there is an urgent need in this field for a highly integrated, fully functional, compact, and easily adjustable leg training solution that can efficiently switch between two training modes, internal pressure (leg clamping) and external pressure (leg expansion), on a single device, to meet users' growing demand for diversified, professional, and home-based fitness.

[0005] There is currently no effective technical solution to the above problems. Utility Model Content

[0006] The purpose of this application is to provide a leg training device that can achieve two training modes, internal pressure and external pressure, through a switchable pressure plate mounting position.

[0007] In one aspect, this application provides a leg training device, including a housing, a resistance generating device, two symmetrically arranged rotating arms, and two pressure plates; The resistance generating device is located inside the housing, and is disposed between and connected to the two rotating arms. The two rotating arms can swing closer to each other and swing further away from each other. The resistance generating device is used to provide resistance when the two rotating arms swing. The two pressure plates are detachably mounted on the ends of the two rotating arms, and the pressure plates are used to abut against the trainee's legs; the two pressure plates can be mounted on the opposite side of the two rotating arms to provide the support points required for internal pressure training of the trainee's legs; the two pressure plates can also be mounted on the opposite side of the two rotating arms to provide the support points required for external pressure training of the trainee's legs.

[0008] This application provides a leg trainer device with high functional integration and diverse training modes, which can conveniently switch between internal and external pressure training modes on a single device. It effectively solves the problems of single function, large space occupation, and high economic cost of existing training equipment, and improves user experience and training efficiency.

[0009] Optionally, the ends of the two rotating arms extend downwards, and the resistance generating device is located between the two rotating arms, or the resistance generating device is located on the upper side of the two rotating arms.

[0010] This application provides two ways to arrange the resistance generating device through this technical solution, which increases the flexibility and adaptability of the device design. Different structural layouts can be selected according to specific needs to optimize the overall structure and user experience.

[0011] Optionally, the ends of the two rotating arms extend downwards, the resistance generating device is located between the two rotating arms, and the rotating arms have an L-shaped structure; The resistance generating device includes a first resistance screw, a first fixed block, a first sliding block, two first rotating pins, a first spring, and a first adjusting knob; The first resistance screw extends downward and is located between the two rotating arms. The first end of the first resistance screw is fixedly provided with the first fixing block. The first sliding block passes through the first resistance screw. The first spring passes through the first resistance screw and one end of the spring abuts against the first sliding block. The first adjusting knob is detachably provided at the second end of the first resistance screw. The first adjusting knob is used to adjust the compression of the first spring. The two first rotating pins are hinged to the corners of the two rotating arms so that the two rotating arms can swing around the first rotating pins. When the two rotating arms swing close to each other, the starting ends of the two rotating arms abut against the first fixed block and move upward. The first fixed block drives the first resistance screw to move upward, and the first spring is compressed against the first sliding block, thereby generating resistance. As the two rotating arms swing away from each other, the starting ends of the two rotating arms abut against the first sliding block and move downward. The first sliding block moves downward to compress the first spring, thereby generating resistance.

[0012] This application provides a specific resistance generating device structure through the technical solution. By cooperating with the first resistance screw, the first spring and the adjustment knob, the resistance is adjustable. Furthermore, by linking the rotating arm with the resistance device, stable resistance can be provided during both internal and external pressure training, effectively solving the problems of inconvenient resistance adjustment and unsmooth training experience in the prior art.

[0013] Optionally, the resistance generating device further includes two first fixed plates, and two rotating arms are disposed between the two first fixed plates. Each of the two first fixed plates is provided with a first through hole, and two first rotating pins pass through the first through holes of the two first fixed plates and are respectively hinged to the two rotating arms, so that the two rotating arms can swing relative to the two first fixed plates.

[0014] Optionally, the resistance generating device further includes a second sliding block, which is mounted on the first resistance screw and located between the first fixed block and the first sliding block. The second sliding block is provided with two laterally extending first waist-shaped through holes, and the starting ends of the two rotating arms are respectively slidably connected to the two first waist-shaped through holes through first fixing pins. When the two rotating arms swing closer to each other, the two rotating arms drive the second sliding block to move upward against the first fixed block. As the two rotating arms swing away from each other, the two rotating arms cause the second sliding block to move downward against the first sliding block.

[0015] Through this technical solution, this application introduces the design of a second sliding block and an oblong through hole, optimizes the connection between the rotating arm and the resistance device, makes the force transmission more direct and efficient, reduces friction and energy loss during the movement, and thus improves the smoothness and effectiveness of training.

[0016] Optionally, the second end of the first resistance screw is further provided with a first abutting block. The first abutting block is slidably sleeved on the first resistance screw and located between the first spring and the first adjusting knob. The first abutting block is used to abut against the first spring to prevent the first spring from disengaging from the first resistance screw.

[0017] Optionally, the ends of the two rotating arms extend downwards, the resistance generating device is located on the upper side of the two rotating arms, and the rotating arms have an L-shaped structure; The resistance generating device includes a second resistance screw, a second fixed block, a third sliding block, two second rotating pins, a second spring, and a second adjusting knob; The second resistance screw extends upward and is located above the two rotating arms. The first end of the second resistance screw is fixedly provided with the second fixing block. The third sliding block passes through the second resistance screw. The second spring passes through the second resistance screw and one end of the spring abuts against the third sliding block. The second adjusting knob is detachably provided at the second end of the second resistance screw. The second adjusting knob is used to adjust the compression of the second spring. The two second rotating pins are hinged to the corners of the two rotating arms so that the two rotating arms can swing around the second rotating pins. When the two rotating arms swing away from each other, the starting ends of the two rotating arms abut against the second fixed block and move downward. The second fixed block drives the second resistance screw to move downward, and the second spring is compressed against the third sliding block, thereby generating resistance. As the two rotating arms swing closer to each other, the starting ends of the two rotating arms abut against the third sliding block and move upward. The third sliding block moves upward to compress the second spring, thereby generating resistance.

[0018] Optionally, the resistance generating device further includes two second fixed plates, and the two rotating arms are disposed between the two second fixed plates. The two second fixed plates are respectively provided with second through holes, and the two second rotating pins pass through the second through holes of the two second fixed plates and are respectively hinged to the two rotating arms, so that the two rotating arms can swing relative to the two second fixed plates.

[0019] Optionally, the resistance generating device further includes a fourth sliding block, which is mounted on the second resistance screw and located between the second fixed block and the fourth sliding block. The fourth sliding block is provided with two laterally extending second waist-shaped through holes, and the starting ends of the two rotating arms are respectively slidably connected to the two second waist-shaped through holes through second fixing pins. When the two rotating arms swing away from each other, the two rotating arms drive the fourth sliding block to move downward against the second fixed block; When the two rotating arms swing close to each other, the two rotating arms drive the fourth sliding block to move upward against the third sliding block.

[0020] Optionally, the second end of the second resistance screw is further provided with a second abutment block, which is slidably sleeved on the second resistance screw and located between the second spring and the second adjustment knob. The second abutment block is used to abut against the second spring to prevent the second spring from disengaging from the second resistance screw.

[0021] Beneficial Effects: The leg training device provided in this application, by incorporating a detachable pressure plate mounted at the end of a rotating arm, and allowing the pressure plate to be switched between the opposite and facing sides of the rotating arm, enables simultaneous training of both thigh abduction (external pressure) and adduction (internal pressure) modes on a single device. This solution overcomes the limitations of existing training equipment, which often has limited functionality and requires multiple devices for comprehensive training, significantly saving space and economic costs. Simultaneously, the direct connection between the resistance generator and the rotating arm ensures a direct and efficient force transmission path, improving the smoothness and effectiveness of training. Furthermore, the resistance generator provides adjustable resistance to meet different training intensity requirements, enhancing the user experience. Therefore, the leg training device of this application boasts advantages such as high integration, comprehensive functionality, compact structure, and convenient adjustment, meeting the growing demand from users for diverse, professional, and home-based fitness. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first structure of the leg trainer device provided in this application corresponding to the external pressure training mode.

[0023] Figure 2 An exploded view of the first structure of the leg trainer device provided in this application corresponding to the internal pressure training mode.

[0024] Figure 3 This is a schematic diagram of the overall structure of the second structure of the leg trainer device provided in this application, corresponding to the internal pressure training mode.

[0025] Figure 4 This is a schematic diagram of the second structure of the leg trainer device provided in this application, corresponding to the external pressure training mode.

[0026] Figure 5 An exploded view of the second structure of the leg trainer device provided in this application corresponding to the external pressure training mode.

[0027] Labeling Explanation: 10. Housing; 20. Rotating Arm; 30. Pressure Plate; 41. First Resistance Screw; 42. First Fixed Block; 43. First Sliding Block; 44. First Rotating Pin; 45. First Spring; 46. First Adjusting Knob; 47. First Fixed Plate; 48. Second Sliding Block; 49. First Abutting Block; 51. Second Resistance Screw; 52. Second Fixed Block; 53. Third Sliding Block; 54. Second Rotating Pin; 55. Second Spring; 56. Second Adjusting Knob; 57. Second Fixed Plate; 58. Fourth Sliding Block; 59. Second Abutting Block. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Traditional leg training equipment suffers from several drawbacks when training leg muscles, including limited training modes, complex structures, low transmission efficiency, and inconvenient resistance adjustment. For example, most leg-clamping machines on the market can only perform adduction exercises; to perform abduction exercises, a separate device is required, which not only takes up space but also increases costs. Furthermore, some machines have complex designs with indirect force transmission paths, affecting training effectiveness, and their cumbersome resistance adjustment methods result in a poor user experience.

[0031] Therefore, please refer to Figures 1-5 This application provides a leg training device, including a housing 10, a resistance generating device, two symmetrically arranged rotating arms 20 and two pressure plates 30; The resistance generating device is located inside the housing 10. The resistance generating device is disposed between and connected to the two rotating arms 20. The two rotating arms 20 can swing closer to each other and swing further away from each other. The resistance generating device is used to provide resistance when the two rotating arms 20 swing. Two pressure plates 30 are detachably installed at the ends of the two rotating arms 20. The pressure plates 30 are used to press against the trainee's legs. The two pressure plates 30 can be installed on the opposite side of the two rotating arms 20 to provide the support points required for the trainee's legs to perform internal pressure training. The two pressure plates 30 can also be installed on the opposite side of the two rotating arms 20 to provide the support points required for the trainee's legs to perform external pressure training.

[0032] The "shell 10" refers to the external structure used to accommodate and protect the internal mechanism. It can be made of materials such as metal or plastic. Its function is to provide support and protection for the entire device. For example, the shell 10 may include an upper cover and a lower cover, which are engaged to form a first space, in which the resistance generating device is located.

[0033] The pressure plate 30 is installed at the end of the rotating arm 20 and is used to directly press against the trainee's legs. Its surface is usually designed in an ergonomic shape to provide comfortable support and even pressure distribution. Both pressure plates 30 are equipped with bolts, and both rotating arms 20 are equipped with screw holes at their ends. The bolts of the two pressure plates 30 pass through the screw holes at the ends of the two rotating arms 20 respectively and are fixed with screws. The specific installation method of the two pressure plates 30 is not specifically limited here, as long as it can be detachable.

[0034] The core of the leg training device of this application lies in the ability to achieve two training modes, internal pressure and external pressure, through the switchable mounting position of the pressure plate 30.

[0035] The pressure plate 30 can be installed on one side of the two rotating arms 20 facing each other. This means that when the pressure plate 30 is installed on the inside of the rotating arms 20, it provides an outward expansion support point for the trainee's legs, thereby performing external pressure training (i.e., thigh abduction training).

[0036] The pressure plate 30 can also be installed on the opposite side of the two rotating arms 20. When the pressure plate 30 is installed on the outside of the rotating arms 20, it provides a support point for the trainee's legs to clamp inward, thereby performing internal pressure training (i.e., thigh adduction training). Switching the installation position of the pressure plate 30 allows one device to achieve two different training modes.

[0037] Specifically, when the trainee needs to perform external pressure training, the pressure plate 30 is installed on one side of the two rotating arms 20 facing each other (e.g., Figure 1 and Figure 4 As shown), the pressure plate 30 provides an outward expansion support point for the trainee's legs. The trainee exerts force outward with their legs, causing the rotating arms 20 to swing outward, and the resistance generating device provides corresponding resistance, thus effectively exercising the thigh abductor muscles. When the trainee needs to perform internal pressure training, the pressure plate 30 is disassembled and reinstalled on the opposite side of the two rotating arms 20 (as shown). Figure 2 and Figure 3 As shown in the diagram, the pressure plate 30 provides an inward clamping support point for the trainee's legs. The trainee exerts force inward with their legs, causing the rotating arm 20 to swing inward, and the resistance generating device also provides resistance, thereby effectively exercising the adductor muscles of the thigh.

[0038] In some embodiments, the ends of the two rotating arms 20 extend downwards, and the resistance generating device is located between the two rotating arms 20, or the resistance generating device is located on the upper side of the two rotating arms 20.

[0039] Specifically, such as Figure 3-5 As shown, the ends of the two rotating arms 20 extend downwards, meaning the main body of the rotating arms 20 extends downwards in the vertical direction. This ensures that the trainee's legs have a stable support point and a swing path that conforms to the natural movement trajectory when performing external or internal pressure training. This significantly improves stability and comfort during training, allowing the trainee's legs to move in a more natural and ergonomic way, thereby effectively avoiding unnecessary joint pressure and postural deviations. Furthermore, the two selectable positions of the resistance generating device—between the rotating arms 20 or above them—provide flexibility for the overall layout of the device.

[0040] In some embodiments, the ends of the two rotating arms 20 extend downwards, the resistance generating device is located between the two rotating arms 20, and the rotating arms 20 have an L-shaped structure; The resistance generating device includes a first resistance screw 41, a first fixed block 42, a first sliding block 43, two first rotating pins 44, a first spring 45, and a first adjusting knob 46; The first resistance screw 41 extends downward and is located between the two rotating arms 20. A first fixing block 42 is fixedly provided at the first end of the first resistance screw 41. A first sliding block 43 passes through the first resistance screw 41. A first spring 45 passes through the first resistance screw 41 and one end of the spring abuts against the first sliding block 43. A first adjusting knob 46 is detachably provided at the second end of the first resistance screw 41. The first adjusting knob 46 is used to adjust the compression of the first spring 45. Two first rotating pins 44 are hinged to the corners of the two rotating arms 20 so that the two rotating arms 20 can swing around the first rotating pins 44. When the two rotating arms 20 swing closer to each other, the starting ends of the two rotating arms 20 (i.e., the ends of the rotating arms 20 located inside the housing, such as...) Figure 5 The end indicated by A in the middle moves upward against the first fixed block 42, the first fixed block 42 drives the first resistance screw 41 to move upward, the first spring 45 is pressed against the first sliding block 43 and compressed, thereby generating resistance; As the two rotating arms 20 swing away from each other, the starting ends of the two rotating arms 20 abut against the first sliding block 43 and move downward. The first sliding block 43 moves downward to compress the first spring 45, thereby generating resistance.

[0041] Specifically, the solution of this application, through the hinge of the L-shaped rotating arm 20 and the first rotating pin 44, effectively converts the swing of the rotating arm 20 into a linear action on the resistance generating device. When the two rotating arms 20 swing closer to each other, their starting ends abut against the first fixed block 42, causing the first fixed block 42 and the first resistance screw 41 to move upward. At this time, the first spring 45 is compressed against the first sliding block 43, thereby generating outward resistance, which can be used to support the trainee's external pressure training. Conversely, when the two rotating arms 20 swing away from each other, their starting ends abut against the first sliding block 43, causing the first sliding block 43 to move downward, thereby compressing the first spring 45, thereby generating inward resistance, which can be used to support the trainee's internal pressure training. The setting of the first adjustment knob 46 allows the user to precisely adjust the pre-compression of the first spring 45 according to their own needs, thereby adjusting the magnitude of the training resistance, greatly improving the adaptability of the equipment and the personalization of training.

[0042] Through the above technical solution, this application provides a leg training device with a compact structure, adjustable resistance, and a clearly defined mechanism of action. The device, through the linkage design of the L-shaped rotating arm 20 and the spring-screw resistance generator, allows the resistance to be precisely adjusted according to the trainee's needs, thereby improving the effectiveness and safety of training.

[0043] In some preferred embodiments, assuming the trainee needs to perform thigh expansion training (external pressure training mode), two pressure plates 30 are installed on opposite sides of the rotating arms 20. During training, the trainee's legs expand outward, causing the two rotating arms 20 to swing away from each other. At this time, the starting end of the rotating arm 20 will press down against the first sliding block 43, causing it to move downward along the first resistance screw 41, thereby compressing the first spring 45. If the trainee wants to increase the training intensity, they can rotate the first adjustment knob 46, causing the first adjustment knob 46 to move upward along the first resistance screw 41, further compressing the first spring 45, thereby increasing the spring's preload and generating greater resistance at the same swing amplitude. Conversely, if the intensity needs to be reduced, the first adjustment knob 46 can be rotated in the opposite direction.

[0044] In some embodiments, the resistance generating device further includes two first fixed plates 47, two rotating arms 20 disposed between the two first fixed plates 47, each of the two first fixed plates 47 having a first through hole, and two first rotating pins 44 passing through the first through holes of the two first fixed plates 47 and being hinged to the two rotating arms 20 respectively, so that the two rotating arms 20 can swing relative to the two first fixed plates 47.

[0045] The first fixing plate 47 can be understood as a plate-shaped component used to provide structural support and positioning. Its material can be high-strength metal or composite material to ensure sufficient rigidity and stability.

[0046] Specifically, the solution of this application introduces two first fixing plates 47 to provide stable support and precise guidance for the swinging of the two rotating arms 20. When the two rotating arms 20 are positioned between the two first fixing plates 47, the first fixing plates 47 effectively constrain the lateral movement of the rotating arms 20. Simultaneously, the first rotating pin 44 passes through the first through hole on the first fixing plate 47 and is hinged to the rotating arm 20, so that the axis of the first rotating pin 44 is precisely positioned and fixed by the first fixing plate 47. It is precisely because the first fixing plate 47 provides a robust support frame and precise axis positioning that the rotating arms 20 can swing around a stable and fixed axis when moving closer or further apart, thus avoiding swaying or deviation caused by axis instability. This not only improves training safety but also allows trainees to focus more on muscle contraction and relaxation, thereby achieving better training results and a more comfortable user experience.

[0047] In some embodiments, the resistance generating device further includes a second sliding block 48, which passes through the first resistance screw 41 and is located between the first fixed block 42 and the first sliding block 43. The second sliding block 48 is provided with two laterally extending first waist-shaped through holes, and the starting ends of the two rotating arms 20 are respectively slidably connected to the two first waist-shaped through holes through first fixing pins. When the two rotating arms 20 swing close to each other, the two rotating arms 20 drive the second sliding block 48 to push against the first fixed block 42 and move upward. As the two rotating arms 20 swing away from each other, the two rotating arms 20 drive the second sliding block 48 to move downward against the first sliding block 43.

[0048] The first fixing pin can be understood as a pin fixed to the beginning of the rotating arm 20. It passes through the first oblong through hole on the second sliding block 48, so that the rotating arm 20 can drive the second sliding block 48 to slide through the first fixing pin when it swings. The design of the first oblong through hole allows the first fixing pin to slide laterally within a certain range, thereby adapting to the arc trajectory of the rotating arm 20 when it swings and ensuring the smoothness of the force transmission process.

[0049] The second sliding block 48 can be made of high-strength wear-resistant materials, such as engineering plastics or surface-treated metals, to further enhance its durability and sliding performance.

[0050] Specifically, the solution of this application effectively transforms the swinging motion of the rotating arm 20 into a linear sliding motion along the first resistance screw 41 by introducing a second sliding block 48 and utilizing the sliding connection between the first fixing pin and the first oblong through hole. Due to this sliding connection, during the swinging process, the starting end of the rotating arm 20 no longer makes direct hard contact with the first fixing block 42 or the first sliding block 43, but instead slides within the first oblong through hole via the first fixing pin, thus smoothly transmitting force to the second sliding block 48. The second sliding block 48 then pushes upward against the first fixing block 42 or downward against the first sliding block 43, thereby compressing the first spring 45 to generate resistance. This indirect and flexible force transmission method effectively avoids problems such as jamming and wear caused by the incomplete matching of the swing trajectory of the rotating arm 20 with the linear motion of the resistance screw, ensuring the smoothness and accuracy of resistance transmission, thereby improving the user experience and training effect.

[0051] In some embodiments, a first abutting block 49 is also provided at the second end of the first resistance screw 41. The first abutting block 49 is slidably sleeved on the first resistance screw 41 and located between the first spring 45 and the first adjusting knob 46. The first abutting block 49 is used to abut against the first spring 45 to prevent the first spring 45 from disengaging from the first resistance screw 41.

[0052] Specifically, the solution of this application effectively solves the problem that the first spring 45 may detach from the first resistance screw 41 by setting a first abutment block 49 at the second end of the first resistance screw 41. When the first spring 45 is subjected to an upward thrust during resistance adjustment or training, the first abutment block 49 will abut against the first spring 45, preventing it from sliding further downward. It is precisely because of the presence of the first abutment block 49 that the first spring 45 is always confined within a predetermined working area on the first resistance screw 41, thereby ensuring the stable operation of the resistance generating device. This not only extends the service life of the equipment but also provides trainees with a more stable and safer training experience.

[0053] The first abutting block 49 can be an annular or sleeve-shaped component with an inner diameter slightly larger than the outer diameter of the first resistance screw 41, so as to facilitate sliding sleeve.

[0054] In some embodiments, the ends of the two rotating arms 20 extend downwards, the resistance generating device is located on the upper side of the two rotating arms 20, and the rotating arms 20 have an L-shaped structure. The resistance generating device includes a second resistance screw 51, a second fixed block 52, a third sliding block 53, two second rotating pins 54, a second spring 55, and a second adjusting knob 56; The second resistance screw 51 extends upward and is located above the two rotating arms 20. A second fixing block 52 is fixedly installed at the first end of the second resistance screw 51. A third sliding block 53 passes through the second resistance screw 51. A second spring 55 passes through the second resistance screw 51 and one end of the spring abuts against the third sliding block 53. A second adjusting knob 56 is detachably installed at the second end of the second resistance screw 51. The second adjusting knob 56 is used to adjust the compression of the second spring 55. Two second rotating pins 54 are hinged to the corners of the two rotating arms 20 so that the two rotating arms 20 can swing around the second rotating pins 54. When the two rotating arms 20 swing away from each other, the starting ends of the two rotating arms 20 abut against the second fixed block 52 and move downward. The second fixed block 52 drives the second resistance screw 51 to move downward, and the second spring 55 is compressed by pressing against the third sliding block 53, thereby generating resistance. When the two rotating arms 20 swing close to each other, the starting ends of the two rotating arms 20 abut against the third sliding block 53 and move upward. The third sliding block 53 moves upward to compress the second spring 55, thereby generating resistance.

[0055] Specifically, such as Figure 1 and Figure 2 As shown, the solution of this application cleverly places the resistance generating device on the upper side of the two rotating arms 20, and uses a combination of a second resistance screw 51, a second fixed block 52, a third sliding block 53, a second spring 55, and a second adjusting knob 56 to achieve precise resistance control during the swinging process of the rotating arms 20. When the trainee's legs drive the rotating arms 20 to swing away from each other, the starting end of the rotating arm 20 will push against the second fixed block 52 and move downward, thereby driving the second resistance screw 51 to move downward. Since one end of the second spring 55 pushes against the third sliding block 53, and the other end of the second spring 55 is fixed or adjusted by the second adjusting knob 56, the downward movement of the second resistance screw 51 will cause the second spring 55 to be compressed, thereby generating resistance and effectively resisting the movement of the rotating arms 20 away from each other. Conversely, when the rotating arms 20 swing closer to each other, the starting end of the rotating arm 20 will push against the third sliding block 53, causing it to move upward, similarly compressing the second spring 55 and generating resistance to resist the movement of the rotating arms 20 closer to each other. The second adjustment knob 56 allows the compression of the second spring 55 to be flexibly adjusted according to training needs, thereby enabling training at different resistance levels.

[0056] By placing the resistance generator on the upper side of the rotating arm 20 using the above technical solution, the overall spatial layout of the equipment is optimized, allowing it to better adapt to different usage environments while maintaining stability. Furthermore, the introduction of the second adjustment knob 56 allows trainees to precisely adjust the resistance level according to their own strength level and training goals, greatly enhancing the personalization and effectiveness of training. This ensures that the resistance acts stably and continuously on the trainee's legs during leg external or internal pressure training, thereby achieving better training results and effectively avoiding the problems of complex structure and inconvenient adjustment that may exist with traditional resistance devices.

[0057] The second resistance screw 51 can be a precision-machined threaded rod to ensure smooth movement of the third sliding block 53. The second spring 55 can be a high-modulus helical spring to provide stable resistance output. The second adjustment knob 56 can be designed as a graduated knob for easy and intuitive selection of the desired resistance level by the user.

[0058] In some embodiments, the resistance generating device further includes two second fixed plates 57, two rotating arms 20 disposed between the two second fixed plates 57, and two second through holes respectively provided on the two second fixed plates 57. Two second rotating pins 54 pass through the second through holes of the two second fixed plates 57 and are respectively hinged to the two rotating arms 20 so that the two rotating arms 20 can swing relative to the two second fixed plates 57.

[0059] Among them, the two second fixing plates 57 can be understood as structural components used to support and guide the two rotating arms 20. They are usually made of materials with sufficient strength and rigidity, such as metal plates like steel plates, aluminum alloy plates or high-strength engineering plastic plates.

[0060] Specifically, the solution of this application introduces two second fixed plates 57 and positions the two rotating arms 20 between these fixed plates, effectively providing double-sided support and guidance for the swinging of the rotating arms 20. When the rotating arms 20 swing along the axis of the second rotating pin 54, they are constrained laterally by the two second fixed plates 57, thereby greatly suppressing the lateral swaying that may occur during the movement of the rotating arms 20. The second rotating pin 54 passes through the second through hole on the second fixed plate 57 and is hinged to the rotating arm 20, which provides stronger support and more precise positioning at the hinge point, ensuring that the swinging path of the rotating arm 20 always remains within the preset plane, thereby improving the stability of the entire swinging mechanism.

[0061] In some embodiments, the resistance generating device further includes a fourth sliding block 58, which is mounted on the second resistance screw 51 and located between the second fixed block 52 and the fourth sliding block 58. The fourth sliding block 58 is provided with two laterally extending second waist-shaped through holes, and the starting ends of the two rotating arms 20 are respectively slidably connected to the two second waist-shaped through holes through second fixed pins. When the two rotating arms 20 swing away from each other, the two rotating arms 20 drive the fourth sliding block 58 to move downward against the second fixed block 52. When the two rotating arms 20 swing close to each other, the two rotating arms 20 drive the fourth sliding block 58 to push against the third sliding block 53 and move upward.

[0062] Specifically, the solution of this application decouples the swinging motion of the rotating arm 20 from the linear motion of the resistance generating device by introducing a fourth sliding block 58 and a second oblong through hole, and couples them in a controlled sliding connection manner. When the two rotating arms 20 swing closer to each other, the second fixing pin on its starting end slides in the second oblong through hole, thereby driving the fourth sliding block 58 to move upward. The fourth sliding block 58 then pushes upward against the third sliding block 53, and the third sliding block 53 moves upward to compress the second spring 55, thereby generating resistance. Conversely, when the two rotating arms 20 swing away from each other, the second fixing pin slides in the second oblong through hole, driving the fourth sliding block 58 to move downward. The fourth sliding block 58 pushes downward against the second fixing block 52, causing it to move downward. The second fixing block 52 drives the second resistance screw 51 to move downward. The second spring 55 is fixed by the second adjusting knob 56 and moves downward with the second resistance screw 51. The second spring 55 moves downward and presses against the third sliding block 53 and is compressed, thereby generating resistance. This indirect, sliding force transmission mechanism effectively avoids direct rigid collision between the starting end of the rotating arm 20 and the resistance generating device components, thereby optimizing the force transmission process and improving the smoothness and comfort of the training experience.

[0063] In some embodiments, a second abutment block 59 is also provided at the second end of the second resistance screw 51. The second abutment block 59 is slidably sleeved on the second resistance screw 51 and located between the second spring 55 and the second adjusting knob 56. The second abutment block 59 is used to abut against the second spring 55 to prevent the second spring 55 from disengaging from the second resistance screw 51.

[0064] The second abutment block 59 can be understood as a ring-shaped or disc-shaped structure, with its inner diameter slightly larger than the outer diameter of the second resistance screw 51, so that it can slide along the axial direction of the second resistance screw 51.

[0065] Specifically, the solution of this application provides a second abutment block 59 at the second end of the second resistance screw 51, which is slidably sleeved on the second resistance screw 51 and located between the second spring 55 and the second adjustment knob 56, thereby effectively providing a physical limit for the second spring 55. When the second spring 55 may experience axial displacement due to force changes or equipment vibration during training, the second abutment block 59 can promptly abut it, preventing it from moving further towards the second adjustment knob 56, thus ensuring that the second spring 55 always remains in the correct position on the second resistance screw 51, avoiding the situation where it detaches from the screw and causes the resistance mechanism to fail.

[0066] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0067] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A leg training device, characterized in that, It includes a housing (10), a resistance generating device, two symmetrically arranged rotating arms (20) and two pressure plates (30); The resistance generating device is located inside the housing (10), and is disposed between and connected to the two rotating arms (20). The two rotating arms (20) can swing closer to each other and swing further away from each other. The resistance generating device is used to provide resistance when the two rotating arms (20) swing. The two pressure plates (30) are detachably mounted on the ends of the two rotating arms (20), and the pressure plates (30) are used to abut against the legs of the trainee; the two pressure plates (30) can be mounted on the opposite side of the two rotating arms (20) to provide the support points required for external pressure training for the trainee's legs; the two pressure plates (30) can also be mounted on the opposite side of the two rotating arms (20) to provide the support points required for internal pressure training for the trainee's legs.

2. The leg trainer device according to claim 1, characterized in that, The ends of the two rotating arms (20) extend downwards, and the resistance generating device is located between the two rotating arms (20) or on the upper side of the two rotating arms (20).

3. The leg trainer device according to claim 2, characterized in that, The ends of the two rotating arms (20) extend downwards, and the resistance generating device is located between the two rotating arms (20). The rotating arms (20) have an L-shaped structure. The resistance generating device includes a first resistance screw (41), a first fixed block (42), a first sliding block (43), two first rotating pins (44), a first spring (45), and a first adjusting knob (46). The first resistance screw (41) extends downward and is located between the two rotating arms (20). The first end of the first resistance screw (41) is fixedly provided with the first fixing block (42). The first sliding block (43) passes through the first resistance screw (41). The first spring (45) passes through the first resistance screw (41) and one end of it abuts against the first sliding block (43). The first adjusting knob (46) is detachably provided at the second end of the first resistance screw (41). The first adjusting knob (46) is used to adjust the compression of the first spring (45). The two first rotating pins (44) are hinged to the corners of the two rotating arms (20) so that the two rotating arms (20) can swing around the first rotating pins (44). When the two rotating arms (20) swing close to each other, the starting ends of the two rotating arms (20) abut against the first fixed block (42) and move upward. The first fixed block (42) drives the first resistance screw (41) to move upward. The first spring (45) presses against the first sliding block (43) and is compressed, thereby generating resistance. As the two rotating arms (20) swing away from each other, the starting ends of the two rotating arms (20) abut against the first sliding block (43) and move downward, and the first sliding block (43) moves downward to compress the first spring (45), thereby generating resistance.

4. The leg trainer device of claim 3, wherein, The resistance generating device further includes two first fixed plates (47), and two rotating arms (20) are disposed between the two first fixed plates (47). The two first fixed plates (47) are respectively provided with first through holes. The two first rotating pins (44) pass through the first through holes of the two first fixed plates (47) and are respectively hinged to the two rotating arms (20) so that the two rotating arms (20) can swing relative to the two first fixed plates (47).

5. The leg trainer device according to claim 3, characterized in that, The resistance generating device further includes a second sliding block (48), which is mounted on the first resistance screw (41) and located between the first fixed block (42) and the first sliding block (43). The second sliding block (48) is provided with two laterally extending first waist-shaped through holes. The starting ends of the two rotating arms (20) are respectively slidably connected to the two first waist-shaped through holes through first fixing pins. When the two rotating arms (20) swing close to each other, the two rotating arms (20) drive the second sliding block (48) to push against the first fixed block (42) and move upward; As the two rotating arms (20) swing away from each other, the two rotating arms (20) drive the second sliding block (48) to move downward against the first sliding block (43).

6. The leg trainer device according to claim 3, characterized in that, The second end of the first resistance screw (41) is also provided with a first abutting block (49). The first abutting block (49) is slidably sleeved on the first resistance screw (41) and located between the first spring (45) and the first adjusting knob (46). The first abutting block (49) is used to abut against the first spring (45) to prevent the first spring (45) from disengaging from the first resistance screw (41).

7. The leg trainer device according to claim 2, characterized in that, The ends of the two rotating arms (20) extend downwards, and the resistance generating device is located on the upper side of the two rotating arms (20). The rotating arms (20) have an L-shaped structure. The resistance generating device includes a second resistance screw (51), a second fixed block (52), a third sliding block (53), two second rotating pins (54), a second spring (55), and a second adjusting knob (56); The second resistance screw (51) extends upward and is located above the two rotating arms (20). The first end of the second resistance screw (51) is fixedly provided with the second fixing block (52). The third sliding block (53) passes through the second resistance screw (51). The second spring (55) passes through the second resistance screw (51) and one end of it abuts against the third sliding block (53). The second adjusting knob (56) is detachably provided at the second end of the second resistance screw (51). The second adjusting knob (56) is used to adjust the compression of the second spring (55). The two second rotating pins (54) are hinged to the corners of the two rotating arms (20) so that the two rotating arms (20) can swing around the second rotating pins (54). When the two rotating arms (20) swing away from each other, the starting ends of the two rotating arms (20) abut against the second fixed block (52) and move downward. The second fixed block (52) drives the second resistance screw (51) to move downward. The second spring (55) presses against the third sliding block (53) and is compressed, thereby generating resistance. When the two rotating arms (20) swing close to each other, the starting ends of the two rotating arms (20) abut against the third sliding block (53) and move upward. The third sliding block (53) moves upward to compress the second spring (55), thereby generating resistance.

8. The leg trainer device according to claim 7, characterized in that, The resistance generating device further includes two second fixed plates (57), and two rotating arms (20) are disposed between the two second fixed plates (57). The two second fixed plates (57) are respectively provided with second through holes. The two second rotating pins (54) pass through the second through holes of the two second fixed plates (57) and are respectively hinged to the two rotating arms (20) so that the two rotating arms (20) can swing relative to the two second fixed plates (57).

9. The leg trainer device according to claim 7, characterized in that, The resistance generating device further includes a fourth sliding block (58), which is mounted on the second resistance screw (51) and located between the second fixed block (52) and the fourth sliding block (58). The fourth sliding block (58) is provided with two laterally extending second waist-shaped through holes. The starting ends of the two rotating arms (20) are respectively slidably connected to the two second waist-shaped through holes through second fixing pins. When the two rotating arms (20) swing away from each other, the two rotating arms (20) drive the fourth sliding block (58) to push against the second fixed block (52) downward and move downward; When the two rotating arms (20) swing close to each other, the two rotating arms (20) drive the fourth sliding block (58) to push against the third sliding block (53) and move upward.

10. The leg trainer device according to claim 7, characterized in that, The second end of the second resistance screw (51) is also provided with a second abutment block (59). The second abutment block (59) is slidably sleeved on the second resistance screw (51) and located between the second spring (55) and the second adjustment knob (56). The second abutment block (59) is used to abut against the second spring (55) to prevent the second spring (55) from disengaging from the second resistance screw (51).

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