Explosive strength training device

An explosive strength training device is provided. The explosive strength training device includes a cable set, a power box, a resistance motor and a controller. The cable set includes a rubber belt and a movable pulley block connected with one end of the rubber belt, the movable pulley block has a first main pulley disposed opposite to the rubber belt, and allows the pulling force of the rubber belt to pass through the center of the first main pulley. Through the labor-saving structure of the first main pulley, the middle section of the power belt is wound on the upper side of the first main pulley and fixedly sleeved on the positioning rod with the fixed side to form a fulcrum.

FIELD OF THE DISCLOSURE

The present disclosure relates to a technical field of sports equipment, and more particularly to a device that can directly upgrade the equipment from conventional muscle strength training to explosive strength training.

BACKGROUND OF THE DISCLOSURE

Conventional equipment for muscle strength training, such as weightlifting equipment, chest expansion equipment, pulling equipment, etc., provides users with the effect of muscle strength training by means of resistance to load movement. The aforementioned load movement of the sports equipment is mainly provided by the tension rope and the metal block hanging the weight, and the amount of the metal blocks (increase or decrease the weight) is used as the resistance for training.

Although the aforementioned sports equipment for muscle strength training can adjust the load weight by changing the number of metal blocks. However, adding or reducing the metal blocks is time-consuming, and the load adjustment cannot be made immediately. Moreover, the weight of the metal block is fixed; it is not easy to fine-tune the load weight according to the training situation. As a result, the training mode is too standardized, making it challenging to enhance the explosive force.

SUMMARY OF THE DISCLOSURE

The main objective of the present disclosure is to solve the problem that the conventional muscle strength training equipment cannot adjust the load weight immediately, and the load weight is not easy to be fine-tuned according to the training situation, so that the training mode is too fixed. It is difficult to help the explosive force. The load weight can be fine-tuned in time through the electrical control of the controller and the resistance motor. The frame of the conventional strength training equipment can be retained, and only require replacing the metal block with the present disclosure, which can avoid resource waste and be more environmentally friendly.

In order to achieve the above-mentioned objective and effort, the present disclosure provides an explosive strength training device, including a cable set, a power box, a resistance motor and a controller. The cable set includes a rubber belt and a movable pulley block connected with one end of the rubber belt, the movable pulley block has a first main pulley disposed opposite to the rubber belt, and allows the pulling force of the rubber belt to pass through the center of the first main pulley. The power box includes an outer face and a positioning rod protruding from the outer face. The resistance motor is disposed in the power box and has a central axis protruding through the outer face, in which the central axis protrudes from the outer face and is located under the positioning rod and combined with a central wheel; wherein the central wheel winds with one end of a power belt. The other end of the power belt has a sleeve-shaped fixed side; the middle section of the power belt is wound on the upper side of the first main pulley and fixedly sleeved on the positioning rod with the fixed side to form a fulcrum. The controller is electrically connected to the resistance motor, for controlling the resistance motor to output the reverse resistance force of the rubber belt on the central wheel.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

Referring toFIGS.1-14, the present disclosure provides an explosive strength training device, which can be described in the two embodiments. As shown inFIGS.1-10, the first embodiment discloses the explosive strength training device, comprising: a cable set10, a power box20, a resistance motor30and a controller40.

The cable set10includes a rubber belt11and a movable pulley block12connected with one end of the rubber belt11, the movable pulley block12has a first main pulley121disposed on the opposite end of the rubber belt11, and allows the pulling force of the rubber belt11to pass through the center A of the first main pulley121.

The power box20includes an outer face21and a positioning rod22protruding from the outer face21.

The resistance motor30(In this embodiment, it is a servo motor) is disposed on the power box20and has a central axis31protruding through the outer face21. The central axis31protrudes from the outer face21and is located under the positioning rod22and supports a central wheel32. The central wheel32winds with one end of a power belt33. The other end of the power belt33has a sleeve-shaped fixed side331, the middle section of the power belt33is wound on the upper side of the first main pulley121and fixedly sleeved on the positioning rod22with the fixed side331to form a fulcrum B.

As shown inFIG.9, the controller40is electrically connected to the resistance motor30, for controlling the resistance motor30to output the reverse resistance force of the rubber belt11on the central wheel32.

Further, as shown inFIGS.4-8, the first embodiment is more particularly described in the following description. The explosive strength training device of the present disclosure is mounted on a training machine60, the two guide rods50and the power box20with the resistance motor30are mounted on the base frame61of the training machine60.

As shown inFIGS.5-8, the power belt33is wound on the upper side of the first main pulley121and fixedly sleeved on the positioning rod22with the fixed side331to form a fulcrum B, The other end of the power belt33winds upwards through the upper side of the first main pulley121and connects downwardly to the central wheel32. When the user under training pulls the rubber belt11, the movable pulley block12and the horizontal guide plate13are pulled along the direction of the arrow inFIG.8to the position shown inFIG.10. Due to the pulling force of the rubber belt11passing through the center A of the first main pulley121, the relative fulcrum B will form an upward force by the radius of the first main pulleyl21(as the forcing arm), and the pulling force that generated by the resistance motor30controls the central wheel32to wind and pull the power belt33will form a resistance arm. The length of the resistance arm is equal to the diameter of the first main pulley121, which is twice of the forcing arm (the radius of the first main pulley121). Therefore, the resistance motor30only needs to output half of the force and can resist the force operated by the user for training. The present disclosure further effectively reduces the load of the motor and the power consumption, lowers the cost, and improves the smoothness of use and user favorability. Compared with conventional training equipment, the present disclosure can achieve a better explosive training effect by the monitor the output mode of the resistance motor30by the controller40. The frame of the conventional strength training equipment can be retained, and only require replacing the metal block with the present disclosure, which can avoid resource waste and be more environmentally friendly.

The features of the elements of the first embodiment of the present disclosure are described in further detail below. InFIGS.1-10, the power box20has a pulley rod23protruding from the outer face21, and a second main pulley231is supported by the pulley rod23and limited by the positioning rod22. The power belt33extends through the second main pulley231from the side distant from the positioning rod22downward to connect the central wheel32. Further, as shown inFIG.8A, which is a sectional schematic view of another assembled structure of the first embodiment of the present disclosure. The power box20has a limiting pulley28disposed at the opposite side to the positioning rod22for limiting the power belt33with the second main pulley231from offsetting from the central wheel32. Therefore, the second main pulley231provides stable guidance for the power belt33windy operating on the first main pulley121. The power belt33is further prevented from disengaging by pressing the limiting pulley28.

Furthermore, the first embodiment of the present disclosure includes two guiding rods50disposed apart on the training machine60and parallel to the outer face21of the power box20. In addition, a plurality of sliding sleeves51are sleeved around the two guiding rods50, and each of the sliding sleeves51has a circular retaining groove511. Moreover, the cable set10has a horizontal guide plate13disposed between the rubber belt11and the movable pulley block12, and the horizontal guide plate13has two U-shaped first retaining portions131at both ends for respectively assembled with the circular retaining groove511of the sliding sleeve51. Therefore, when both ends of the movable pulley block12are pulled by the rubber belt11and the power belt33, the horizontal guide plate13slides and lifts along the two guide rods50with the sliding sleeves51. The sliding sleeves51provide a stable guide for the movable pulley block12to rise and fall smoothly and reduce the noise caused by vibration.

Further, the cable set10includes an L-joint plate14connected with the rubber belt11and the movable pulley block12. The L-joint plate14consists of a horizontal plate141and a vertical plate142connected with the rubber belt11. The rubber belt11has a folded section111corresponding to the L-joint plate14and clamping two first plates112, and a plurality of screws113threadedly engage the folded section111and the two first plates112to the vertical plate142. Furthermore, the cable set10includes a bolt15, and the movable pulley block12has a top plate122, the bolt15passes through the horizontal plate141and the top plate122, and screws threadedly with a nut151. Therefore, the rubber belt11, the L-joint14and the movable pulley block12are threadedly engaged through the bolts15, and easy to assemble.

In addition, as shown inFIGS.1and6, the power box20has a horizontal fixed plate24connected to the outer face21and disposed between the two guiding rods50, and the horizontal fixed plate24has two U-shaped second retaining portions241at both ends for respectively assembled with the circular retaining groove511of the sliding sleeve51. Therefore, the engagement provides solid support to the two guiding rods50, so as to improve the stability and smoothness of lifting and guiding the movable pulley block12and the horizontal guide plate13along the two guiding rods50.

Moreover, as shown inFIGS.1,6and7, the power box20has two support plates26and a base plate25for providing a mounting combination. The base plate25is connected with the bottom side of the power box20and extends toward and beyond the outer face21. Further, each of the two support plates26has a first lateral side and a second lateral side, the first lateral side is connected to the outer face21and the second lateral side is connected to the base plate25. The base plate25has two elongated-shaped adjusting holes251located between the two support plates26, and the longitudinal direction of the two adjusting holes251is parallel to the outer face21. Therefore, through the arrangement of the longitudinal direction of the two adjusting holes251is parallel to the outer face21, the assembling with the training machine60can be simple and fast. Moreover, the two elongated-shaped adjusting holes251provide greater flexibility and applicability to assemble with different training machines60with different distances between the two guiding rods50.

In addition, as shown inFIGS.1,6and7, the power box20has two fasten assemblies27including two second plates271and two long fasteners272for threadedly engaging the two second plates271, and the base plate25has two sets of threaded holes252disposed and spaced apart at the outer side of the two support plates26. The two sets of threaded holes252have a plurality of threaded holes spaced apart, the two fasten assemblies having the two long fasteners (bolts or screws) threadedly engage the base frame of the training machine60. The plurality of threaded holes of the two sets of threaded holes252can provide a suitable distance for different sizes of the base frame61of the training machines60.

Lastly, as shown inFIGS.11-14, the second embodiment of the present disclosure, the structure difference between the first embodiment and the second embodiment is that the cable set10of the second embodiment is a cable belt16(which can be a steel cable material structure), and a connecting rod17connecting to one end the movable pulley block12. In detail, the connecting rod17has a small diameter thread segment171opposite the cable belt16. The small diameter thread section171passes through the horizontal guide plate13and the top plate122into the movable pulley block12and is fastened with a nut172. Through the connecting rod17, the combination, the cable belt16, the movable pulley block12and the horizontal guide plate13can be easily assembled, in conjunction with the combination of the power box20and the resistance motor30, meet the needs of modification and use in different brands and models of training machine60.

Referring toFIGS.15and16, the outer face21of the power box20further provides a first auxiliary pulley123and a second auxiliary pulley124disposed above the second main pulley231, a third auxiliary pulley125and a fourth auxiliary pulley126disposed above the positioning rod22, a fifth auxiliary pulley127, a sixth auxiliary pulley128, a seventh auxiliary pulley129and an eighth auxiliary pulley1210disposed below the first main pulley121. The power belt33partially passes between the first auxiliary pulley123and the second auxiliary pulley124, the power belt33partially passes between the third auxiliary pulley125and the fourth auxiliary pulley126. The power belt33partially passes between the fifth auxiliary pulley127and the sixth auxiliary pulley128, the power belt33partially passes between the seventh auxiliary pulley129and the eighth auxiliary pulley1210. The advantage of this structure is that the auxiliary pulleys (124˜1210) can guide the power belt33not easy to deviate from the path during the movement process, so as to avoid the occurrence that the power belt33offsets from the moving path and curl and wind together.

In detail, the controller40includes a vibration mode; when the vibration mode is activated, the controller40controls the resistance motor30by a sine wave to perform continuous reverse resistance changes. The advantage of this vibration mode is that the primary purpose of the known fitness equipment is only to increase muscle mass and muscle endurance. Still, sensitivity training is ignored, which is very important for athletes. Sensitivity training relates to speeding up the body's reaction, such as ball games, sprinting, weightlifting, boxing, high jump, long jump, javelin, golf, and other sports that require instant explosive force. Further, explosive force is the synthesis of strength and acceleration; for athletes, to have excellent explosive power requires good muscle strength and sensitivity. The sensitivity of the body's response is related to the speed of the nerve's response. To stimulate the body's sensitivity is to stimulate the body's nerve receptors with external vibrations, such as the sensory neurons in the muscle spindle. Muscle spindles are mainly used to detect changes in muscle length. When the muscles are elongated or the striated stripes on both sides of the muscle spindles contract, the sensory nerves are excited, and the signals are transmitted to the center through the spinal cord. In order to protect the muscles, the muscle spindles will trigger reflex contractions. When the muscle contraction tension is extreme, the Gore tendon that senses muscle tension will release an inhibitory effect to relax the muscle, which is called the stretch reflex. This mechanism can quickly connect the centrifugal and concentric nerves. By stimulating proprioceptors, the motor unit's recruitment can be increased in the shortest time, and achieve a rapid increase in muscle endurance and sensitivity training. The most effective way to achieve a rapid stretch reflex is in vitro vibration. Therefore, in the vibration mode of the present disclosure, the resistance motor30is used as the resistance source and the resistance of the resistance motor30is continuously changed in a sine wave manner during use, so as to produce a vibrating effect. The resistance vibration frequency and amplitude intensity can be set independently. After the setting is completed, the operation of the device of the present disclosure will conform to the currently set vibration intensity and vibration frequency. The user only needs half of the force to easily damage the old muscles, which is most suitable for older to improve sarcopenia. Further, vibration stimulation can increase bone density to improve and prevent osteoporosis. Vibration simultaneously stimulates the sensitivity of nerves to trigger stretch reflexes, and this dual-effect training is also called explosive training. The conventional weight training machine can be upgraded to a system with explosive power training only by replacing the weight block with the device of the present invention.

As shown inFIG.17, the controller40has a human-machine interface, and includes modules (functions) such as Internet of things, big data analysis, and computer training. The Human machine interface (HMI) is convenient for users to operate intuitively, and the Internet of things function is combined with the big data analysis function, which enables the computer coach to determine the most suitable training content and training volume for the user based on the user's body data.

In addition, as shown inFIG.18, the parameter design template of the present disclosure can be adjusted according to the vibration amplitude in actual use. In which, resistance=F±(x %), x=0˜100, resistance is generated by the motor, F is the user's force;