Training device with electrically adjusta- ble resistance intensity
Patent Information
- Application Number
- TW114126632
- Authority / Receiving Office
- TW · TW
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-11
- Estimated Expiration
- 2045-07-13
Smart Images
Figure IMG-2_DRAW_114126632-A0305-14-0001-1 
Figure IMG-2_DRAW_114126632-A0305-14-0002-2 
Figure IMG-2_DRAW_114126632-A0305-14-0003-3
Abstract
Description
Technical Field
[0001] This invention relates to a training device, and more particularly to a training device with electrically adjustable resistance intensity. Prior Technology
[0002] The structure of traditional bar-plate weightlifting equipment consists of a lever and bar plates for adjusting the training weight. The bar plates are inserted at both ends of the lever to increase or decrease the weight of the entire lever, thereby adjusting the resistance during training.
[0003] However, the aforementioned training equipment has the following disadvantages: 1. Low adjustment efficiency and inconvenience: When adjusting resistance using traditional bar-plate equipment, users need to manually add or remove bar plates. This process is usually time-consuming, labor-intensive, and inconvenient, especially during training that requires rapid resistance adjustments, such as drop sets or super sets. Frequent plate changes can disrupt the training rhythm and reduce training efficiency. In addition, in some cases, bar plates may be difficult to access or return due to poor placement, further increasing inconvenience. 2. Fixed and imprecise resistance increments: Bar plates are usually added in fixed weight units (e.g., 2.5 kg, 5 kg, 10 kg, etc.), which means that the minimum unit of resistance adjustment is relatively large. This can be a limitation for users who are just starting out or need more precise resistance adjustments to achieve the best training effect. For example, when you feel that the existing weight is too light within a certain weight range, but adding another bar plate is too heavy, it is difficult to find the most suitable resistance. 3. Potential safety risks: Manually adding or removing bar plates poses certain safety hazards. Bar weights may accidentally fall during transport, causing injury to the user or those nearby. Furthermore, if the weights are not properly secured, they may wobble or even detach during training, increasing the risk. Although existing weight plate clip designs have effectively improved safety, accidents still occur frequently. 4. Noise and Space Occupancy: The addition, removal, or movement of weights during training often produces impact noise, especially in a gym environment, which may disturb other users. In addition, traditional weight plates require additional storage space; if there are many pieces, they can take up valuable gym space, which is particularly disadvantageous for home gyms or small studios with limited space. 5. Insufficient Data and Intelligence in Training: Traditional weight plate equipment is difficult to integrate with modern technology to provide real-time training data feedback. Although some equipment can be equipped with sensors, their data accuracy and functionality are generally inferior to advanced devices designed with data processing in mind.
[0004] In view of this, the conventional device still needs to be improved. Summary of the Invention
[0005] To address the aforementioned and other problems, the purpose of this invention is to provide a training device with electrically adjustable resistance intensity, thereby improving upon the problems of the aforementioned conventional devices.
[0006] Another objective of this invention is to provide a training device with electrically adjustable resistance intensity, which can provide better resistance adjustment benefits.
[0007] Another objective of this invention is to provide a training device with electrically adjustable resistance intensity, which has better resistance precision adjustment capability.
[0008] Another objective of this invention is to provide a training device with electrically adjustable resistance intensity, featuring a bar-free design to avoid injuries caused by bar plates falling off.
[0009] Another objective of this invention is to provide a training device with electrically adjustable resistance intensity, which has the ability to easily quantify training data.
[0010] To achieve the above and other objectives, this invention provides a training device for electrically adjusting resistance intensity, comprising: a machine base having a platform and a main rail, the main rail having a head end and a tail end, the head end being close to the platform and the tail end being away from the platform; a servo motor assembly disposed on the machine base, having a servo motor and a reducer, the reducer being connected to a motor output shaft of the servo motor, and amplifying the torque of the motor output shaft before outputting it through a torque shaft; a sprocket assembly having a driving sprocket, a driven sprocket, and a chain, the driving sprocket being embedded in the torque shaft and disposed on the head end side of the main rail, the driven sprocket being disposed on the tail end side of the main rail, and the chain looping around the driving sprocket and the driven sprocket. The chain has an opening at both ends, located between the drive sprocket and the driven sprocket; a resistance slider assembly with a guide wheel section and a force receiving section, the guide wheel section having several guide wheels, each guide wheel being embedded in the front and rear sides of the main rail for sliding along the main rail, the top and bottom of the resistance slider assembly being connected to the beginning and end ends of the chain opening; a force applying member located below the force receiving section for receiving and transmitting an external force along the axial direction of the main rail to the force receiving section; and a processing unit located on the machine and coupled to the servo motor unit for setting and controlling the output values of the torque and applied force weight applied by the torque shaft to the drive sprocket, i.e., the upward or downward force of the output force applying member.
[0011] In one embodiment, a positioning stop is further included, which is adjustablely positioned in one of the several positioning holes of the main rail. Each positioning hole is set at a different height along the axial direction of the main rail. When the external force is removed, the positioning stop is used to prevent the resistance slider assembly from moving in the direction in which the chain applies tension.
[0012] In one embodiment, the force-receiving part has a pair of guide rods, a spindle, and a pair of swing arms. The pair of guide rods are pivotally mounted on one front side of the force-receiving part, parallel to the main rail, so that the pair of guide rods can move axially relative to the front side. The pair of guide rods are also perpendicularly connected to the spindle located on the lower side of the force-receiving part at a distance, so that the spindle can move horizontally up and down along the pair of guide rods. Each swing arm has an adjustment end, a swing end, and a through hole located between the adjustment end and the swing end at both ends. The pair of swing arms are placed on both outer sides of the force-receiving part and are sleeved on both ends of the spindle through the through holes. Each swing end is connected to the force-applying member. An adjustment module is provided on both outer sides of the force-receiving part. The adjustment module is used to adjust the position of the adjustment end relative to the outer side of the force-receiving part, so as to change the angle of each swing arm with the spindle as the axis, so as to adjust the front and rear positioning of each swing end.
[0013] In one embodiment, a stop member is further included, the stop member having a contact surface that can be vertically moved relative to an inclined surface of the stop member and positioned at a relative distance from the inclined surface. The force-applying member includes a horizontal rod pivotally mounted on the through hole and an auxiliary rod detachably and vertically screwed onto the horizontal rod. The horizontal rod can rotate freely about the through hole. The horizontal rod has at least one gripping portion and / or a pad portion. The horizontal rod has a circular pin at the position corresponding to the stop member. When each swing arm is held at an adjustment angle, after the auxiliary rod is rotated forward and upward by a swing angle, the outer diameter surface of the circular pin is in straight contact with the contact surface.
[0014] In one embodiment, a force detector is provided on the front side of the force-receiving part, and one of the detection parts of the force detector is in contact with the spindle to detect the force applied by the spindle to the force-receiving part by utilizing the degree of pressure on it.
[0015] In one embodiment, a display unit is further included, which is coupled to the processing unit with the force detector, for displaying the torque applied to the drive sprocket by the servo motor unit and the weight at the output end.
[0016] In one embodiment, the platform is generally parallel to a horizontal plane, and the main track is generally perpendicular to the platform.
[0017] In one embodiment, the torque applied to the drive sprocket by the servo motor unit is directed to rotate clockwise, that is, the output end moves downward.
[0018] In one embodiment, the torque applied to the drive sprocket by the servo motor unit is directed counterclockwise, that is, the output end moves upward.
[0019] In one embodiment, an input unit coupled to the processing unit is further included for adjusting the output torque value of the servo motor unit.
[0020] In one embodiment, the processing unit further includes a training data analysis unit for tracking training resistance and repetition data, and providing real-time analysis and training plan adjustment suggestions.
[0021] In one embodiment, the invention further includes a reinforcing component comprising a pair of base pivots mounted on the platform, a pair of fixing blocks locked to the main rail, a shaft disposed on the fixing blocks, and a pair of support rods with adjustable lengths at both ends connected to the base pivots and the shaft, respectively.
[0022] The article "a" or "the" used for any element / component throughout this work shall be interpreted as including one or at least one, and the reference to a single concept may also include a plural form, unless it is explicitly intended to have a different meaning and thus has a limiting effect.
[0023] The directions or similar terms used throughout this work, such as front, back, left, right, top, bottom, inside, outside, side, etc., are mainly for reference to the directions in the diagrams. These directions or similar terms are only used to help explain and understand the various embodiments of this work and are not intended to limit this work. Simple Explanation of the Diagram
[0024]
[0025] Figure 1 is a block diagram of the system in this creation.
[0026] Figure 2 is a three-dimensional view of this creation.
[0027] Figure 3 is a three-dimensional view of this work from another angle.
[0028] Figure 4 is a side view of the resistance used in this weightlifting training exercise.
[0029] Figure 5 is a side view of the pull-down resistance of this design.
[0030] Figure 6 is a schematic diagram of the use of the auxiliary rod in this creation.
[0031] Figure 7 is a magnified view A of Figure 6.
[0032] Figure 8 is a schematic diagram of an embodiment of the reinforcement components for the main track of this work. Implementation
[0033] To make the above and other objects, features and advantages of this invention more apparent and understandable, preferred embodiments of this invention are described below in detail with reference to the accompanying drawings. Symbols that are marked with the same symbols in different drawings are considered identical and their descriptions will be omitted.
[0034] Figure 1 is a system block diagram of this invention, Figure 2 is a perspective view of this invention, and Figure 3 is a perspective view of this invention from another angle. Please refer to Figures 1 to 3. This invention includes a machine base 10, a servo motor unit 20, a sprocket assembly 30, a resistance slider assembly 40, a force application component 50, and a processing unit 60. The machine base 10 has a platform 11 and a main rail 12. The main rail 12 has a head end 121 and a tail end 122. The head end 121 is close to the platform 11, and the tail end 122 is away from the platform 11.
[0035] The servo motor unit 20 is located on the machine base 10. It has a servo motor 21 and a reducer 22. The reducer 22 is connected to one of the motor output shafts 211 of the servo motor 21 as shown in Figure 3, and the torque of the motor output shaft 211 is amplified and output through a torque shaft 221.
[0036] The sprocket assembly 30 has a driving sprocket 31, a driven sprocket 32 and a chain 33. The driving sprocket 31 is embedded in the torsion shaft 221 and located at the head end of the main rail 12. The driven sprocket 32 is located at the tail end 122 of the main rail 12. The chain 33 is looped around the driving sprocket 31 and the driven sprocket 32, and the head and tail ends of the chain 33 form a chain opening. The chain opening is located between the driving sprocket 31 and the driven sprocket 32 to transmit the tension applied to the chain by the driving sprocket.
[0037] The resistance slider assembly 40 has a guide wheel portion 41 and a force receiving portion 42. The guide wheel portion 41 has several guide wheels 411, each of which is respectively embedded in the front and rear sides of the main rail 12 to guide the resistance slider assembly 40 to slide along the main rail 12. The head and tail ends of the chain opening are respectively connected and fixed to the top 412 and bottom 413 of the guide wheel portion 41 of the resistance slider assembly 40.
[0038] The force-applying component 50 is located on the lower side of the force-receiving part 42 to receive and transmit one of the external forces (i.e. the force applied by the trainee) along the axis of the main rail 12 to the force-receiving part 42.
[0039] The processing unit 60 is located on the machine base 10 and coupled to the servo motor unit 20, and is used to set and control the torque applied by the torque shaft 221 to the drive sprocket 31.
[0040] Preferably, this invention may further include a positioning block 13, which has a first block 13a and a second block 13b that can be positioned in several positioning holes 123 of the main rail 12. For example, the first block 13a can be positioned at a lower position, and the second block 13b at a relatively higher position. When the external force is removed or applied, the first block 13a and the second block 13b can be used to prevent the resistance slider assembly 40 from moving in the direction in which the chain 33 applies tension. In other words, by adjusting the height of the positioning block 13, it can accommodate the starting height and the maximum tension limit height of trainees of different heights, and can also serve as a safety protection function to prevent excessive movement when subjected to excessive vertical load.
[0041] Figure 4 is a side view of the resistance design for weightlifting training in this invention. Referring to Figure 4, it should be noted that the platform 11 is generally parallel to a horizontal plane, and the main rail 12 is generally perpendicular to the platform 11. Thus, the torque applied to the drive sprocket 31 by the servo motor unit 20 rotates clockwise. This structure applies downward pressure to the resistance slider assembly 40, requiring the trainee to exert force to lift upwards (e.g., shoulder lift). This structure can be used for weightlifting training, as shown in Figure 4. Preferably, the user can lift upwards by contacting the soft pad 512 with their shoulders, protecting their shoulders from pain.
[0042] Figure 5 is a side view of the pull-down resistance design of this invention. Referring to Figure 5, preferably, the torque applied to the drive sprocket 31 by the servo motor unit 20 rotates counterclockwise. This structure applies an upward pulling force to the resistance slider assembly 40, requiring the trainee to pull down, thus making it suitable for pull-down training, as shown in Figure 5. Of course, in this pull-down structure, the initial height is set by correspondingly changing the first stop 13a of the positioning block 13 to abut against the positioning hole 123 on the top side of the resistance slider assembly 40, while the second stop 13b, to prevent sudden pulling force, is located in another positioning hole 123 after pulling down an appropriate distance.
[0043] Figure 6 is a schematic diagram of the auxiliary rod used in this invention, and Figure 7 is a partial enlarged view A of Figure 6. Please refer to Figures 2, 3, 6 and 7 simultaneously. Preferably, the force-applying component 50 of this invention includes a horizontal rod 51 and a detachable auxiliary rod 52 perpendicular to the horizontal rod 51. The rotation angle of the auxiliary rod 52 is adjustable. Specifically, referring to Figures 6 and 7, the force-receiving part 42 includes a pair of guide rods 420, a spindle 421 and a pair of swing arms 422. The pair of guide rods 420 are pivotally mounted on one front side of the force-receiving part 42 and axially parallel to the main rail 12, so that the pair of guide rods 420 can move axially relative to the front side. The pair of guide rods 420 are vertically connected to the spindle 421 located on the lower side of the force-receiving part 42 at a distance, so that the spindle 421 can be horizontally raised and lowered along the pair of guide rods 420. A force detector 45 is provided on the front side of the force-bearing part 42. One of the detection parts 451 of the force detector 45 is in contact with the spindle 421 to detect the force applied by the spindle 421 to the force-bearing part 42 by utilizing the degree of pressure.
[0044] Each swing arm 422 has an adjusting end 4221, a swinging end 4222, and a through hole 4223 at both ends. The spindle 421 is located on the lower side of the force-receiving part 42. The swing arms 422 are sleeved on both ends of the spindle 421 through the through holes 4223 and are positioned on both sides of the force-receiving part 42. Each swinging end 4222 is connected to the force-applying member 50. An adjusting module 43 is provided on both sides of the force-receiving part 42. The adjusting module 43 is used to adjust the adjusting end 4221 relative to the force-receiving part 42. The outer position (for example, by screwing a screw on each side of the adjustment end 4221, with the end face of the screw abutting against the adjustment end 4221 to adjust its position forward or backward), using the axis of the spindle 421 as a fulcrum, rotates the angle of each swing arm 422 relative to the spindle 421, causing the swing end 4222 to move in the opposite direction to adjust the front and back positioning of each swing end 4222 (for example, making the swing arm 422 positive or negative 40 to 60 degrees, but not limited to this range). This ensures that even when the user's standing position is slightly off (as some users may not always stand in the exact center), the user's shoulder can correctly abut against the pad 512, thus providing an automatic adjustment function within a certain range.
[0045] Furthermore, according to the design of the above components, as shown in Figure 2, the force-receiving part 42 of the resistance slider assembly 40 is provided with a pair of vertically downward-facing guide rods 420 that can move vertically up and down axially. The guide rods 420 are vertically connected to the spindle 421, allowing the spindle 421 to move up and down along the guide rods 420. The swing arm 422 is pivotally mounted at both ends of the spindle 421. The swing end 4222 of the swing arm 422 is connected to the horizontal rod 51. Therefore, when the user shoulders the soft pad 512 (the pad 512 is made of a pad with appropriate softness, making it less likely to cause pain or injury to the user) and pushes the horizontal rod 51 upward to apply external force, the external force is transmitted to the spindle 421 through the two swing arms 422, and the spindle 421 can then move upward along the axial direction of the guide rod 420. Furthermore, since the detection part 451 of the force detector 45 abuts against the spindle 421, the force detector 45 can measure the external force value and then provide it to the processing unit 60 for display, analysis and other processing.
[0046] Please refer to Figure 4 again. This invention may further include a stop member 44, which has a stop surface 441. The stop surface 441 is vertically movable relative to one of the inclined surfaces 442 of the stop member 44 and positioned at a relative distance from the inclined surface 442. The horizontal rod 51 is pivotally mounted on the through hole 4223. The auxiliary rod 52 is detachably and vertically screwed onto the horizontal rod 51, and the horizontal rod 51 can rotate freely with the through hole 4223 as the center. The horizontal rod 51 has at least one grip portion 511 and / or one pad portion 512 (generally, the grip portion 511 is for hand gripping, and the pad portion 512 is for shoulder carrying, as detailed later). The horizontal rod 51 has a round pin 513 corresponding to the position of the stop member 44. With each swing arm 422 held at an adjustment angle, after the auxiliary rod 52 is rotated forward and upward by a certain angle, the outer diameter surface of the round pin 513 is in straight contact with the abutment surface 441. Therefore, after the stop member 44 cooperates with the round pin 513, the following function can be achieved: before the user of this device lifts the horizontal rod 51 upward with the pad 512, it is necessary to stabilize the point of force application. Otherwise, when the force application member 50 moves in the height direction, the user's point of force application will change and fall out of the point of force application. Therefore, the user needs to hold the auxiliary rod 52 forward and upward with both hands to provide three-point contact between the shoulder lifting point and the two hand gripping points, so as to firmly fix the point of force application of the shoulder lifting, which can improve the stability of the user when exerting force, as shown in Figures 6 and 7.
[0047] Preferably, the horizontal bar 51 and the detachable auxiliary bar 52 perpendicular to the horizontal bar 51 of this invention are suitable for lifting, lying-down lifting, and other operations when the horizontal bar 51 is removed from the auxiliary bar 52. When the horizontal bar 51 is reattached to the auxiliary bar 52, it is suitable for shoulder carrying and other operations.
[0048] Preferably, the invention may further include a display unit 70, which is coupled to the force detector 45 and the processing unit 60, for displaying the torque applied by the servo motor unit 20 to the drive sprocket 31.
[0049] To facilitate adjustment of training resistance, this invention may preferably include an input unit 80 coupled to the processing unit 60 for adjusting the output torque and applied force weight of the servo motor unit 20, as shown in Figure 1. This allows for easy, safe, flexible, and mobile adjustment of the resistance weight at any time.
[0050] Of course, in one embodiment, the processing unit 60 further includes a training data analysis unit 61 for tracking training resistance and repetition data, providing real-time analysis and training plan adjustment suggestions, as shown in Figure 1.
[0051] Figure 8 is a schematic diagram of an embodiment of the reinforcing component of the main rail of this invention. Referring to Figure 8, in order to more easily install the main rail 12 in different locations, this invention may further include a reinforcing component 14. The reinforcing component 14 includes a pair of base pivots 141 mounted on the platform 11, a pair of fixing blocks 142 locked to the main rail 12, a shaft 143 provided on the fixing block 142, and a pair of support rods 144 with adjustable lengths connecting the two ends of the base pivot 141 and the shaft 143 respectively. In this way, the nut connectors at both ends of the pair of support rods 144 can be respectively fitted onto the base pivot 141 and the shaft 143. Due to the combination of the pivot and the shaft hole, the angle between the support rod 144 and the base pivot 141, and between the support rod 144 and the shaft 143 can be automatically adjusted. If the length of each support rod 144 is insufficient, the length of both ends of the support rod 144 can be adjusted, thereby making it suitable for reinforcing the main rail 12 in various sites.
[0052] In conclusion, while traditional barbell plate weightlifting equipment is classic and widely used, it has significant shortcomings compared to this invention in terms of adjustment efficiency, labor-intensive barbell assembly and disassembly, resistance precision, safety, noise and space requirements, and training data quantification. This invention, with its sensors and software, can accurately track training resistance, repetitions, power output, and other data, quickly set the desired weight, and provide real-time analysis and training plan adjustment suggestions, achieving a more intelligent training experience. This invention offers a more convenient, precise, safe, and intelligent option for training.
[0053] Although this invention has been disclosed using the above-described preferred embodiments, it is not intended to limit this invention. Any modifications and alterations made by those skilled in the art to the above embodiments without departing from the spirit and scope of this invention shall still fall within the scope of protection of this invention. Therefore, the scope of protection of this invention shall include all changes within the meaning and equivalent scope of the appended claims. Furthermore, when the above embodiments can be combined, this invention includes any combination of implementation schemes.
[0054]
[0055] 10: Machine
[0056] 11: Platform
[0057] 12: Main Track
[0058] 121: Head end
[0059] 122: Tail end
[0060] 123: Positioning Hole
[0061] 13: Positioning stop
[0062] 13a: First stop
[0063] 13b: Second stop
[0064] 14: Reinforcement Components
[0065] 141: Base Pivot
[0066] 142: Fixed block
[0067] 143: Shaft
[0068] 144: Support rod
[0069] 20: Servo motor unit
[0070] 21: Servo Motor
[0071] 22: Gearbox
[0072] 221: Torque Shaft
[0073] 30: Sprocket Set
[0074] 31: Drive sprocket
[0075] 32: Driven sprocket
[0076] 33: Chain
[0077] 40: Resistance slider assembly
[0078] 41: Guide wheel section
[0079] 411: Guide wheel
[0080] 412: Top
[0081] 413: Bottom
[0082] 42: Force-bearing part
[0083] 420: Guide rod
[0084] 421: Mandrel
[0085] 422: Swing Arm
[0086] 4221: Adjustment end
[0087] 4222: Swing end
[0088] 4223:Through hole
[0089] 43: Adjustment Module
[0090] 44: Stopped item
[0091] 441: Supporting surface
[0092] 442: Inclined surface
[0093] 45: Force Detector
[0094] 451: Detection Department
[0095] 50: Force-applying component
[0096] 51: Horizontal bar
[0097] 511: Grip section
[0098] 512: Pad
[0099] 513: Round pin
[0100] 52: Auxiliary rod
[0101] 60: Processing Unit
[0102] 61: Training Data Analysis Unit
[0103] 70: Display Unit
[0104] 80: Input Unit
Claims
1. A training device for electrically adjusting resistance intensity, comprising: a machine base (10) having a platform (11) and a main rail (12), the main rail (12) having a head end (121) and a tail end (122), the head end (121) being close to the platform (11) and the tail end (122) being away from the platform (11); a servo motor unit (20) disposed on the machine base (10), having a servo motor (21) and a reducer (22), the reducer (22) being connected to a motor output shaft (211) of the servo motor (21), and outputting the torque of the motor output shaft (211) through a torque shaft (221) after amplification; A sprocket assembly (30) has a drive sprocket (31), a driven sprocket (32) and a chain (33). The drive sprocket (31) is embedded in the torsion shaft (221) and located at the head end of the main rail (12). The driven sprocket (32) is located at the tail end (122) of the main rail (12). The chain (33) loops around the drive sprocket (31) and the driven sprocket (32), and the head and tail ends of the chain (33) form a chain opening. The chain opening is located between the drive sprocket (31) and the driven sprocket (32). A resistance slider assembly (40) has a guide wheel part (41) and a force receiving part (42). The guide wheel part (41) has several guide wheels (411). Each guide wheel (411) is respectively embedded in the front and rear sides of the main rail (12) for sliding along the main rail (12). The top (412) and bottom (413) of the resistance slider assembly (40) are respectively connected to the head and tail ends of the chain opening. A force applying member (50) is provided on the lower side of the force receiving part (42) for receiving and transmitting an external force parallel to the axial direction of the main rail (12) to the force receiving part (42). A processing unit (60) is provided on the machine base (10) and coupled to the servo motor unit (20) for setting and controlling the output values of the torque and applied weight of the torque shaft (221) applied to the drive sprocket (31).
2. The training device for electrically adjusting resistance intensity as described in claim 1 further includes a positioning block (13), which has a first block (13a) and a second block (13b) and can be positioned on several positioning holes (123) of the main rail (12). Each positioning hole (123) is set at a different height along the axial direction of the main rail (12). The first block (13a) is set at a lower position and the second block (13b) is set at a relatively higher position. When the external force of the force-bearing part is removed or applied, the first block (13a) and the second block (13b) are used to stop the resistance slider assembly (40) to prevent the resistance slider assembly (40) from rushing upward or downward and hitting the machine (10).
3. The training device for electrically adjusting resistance intensity as described in claim 1, wherein, The force-receiving part (42) has a pair of guide rods (420), a spindle (421), and a pair of swing arms (422). The pair of guide rods (420) are axially parallel to the main rail (12) and pivotally mounted on one front side of the force-receiving part (42) to allow the pair of guide rods (420) to move axially relative to the front side. The pair of guide rods (420) are also perpendicularly connected to the spindle (421) located on the lower side of the force-receiving part (42) at a distance from each other, so that the spindle (421) can be raised and lowered horizontally along the pair of guide rods (420). Each swing arm (422) has an adjusting end (4221) and a swinging end (4222) at both ends, and is located at the adjusting end. A through hole (4223) is provided between the joint end (4221) and the swing end (4222). The pair of swing arms (422) are placed on both sides of the force-receiving part (42) and sleeved on both ends of the spindle (421) through the through hole (4223). Each swing end (4222) is connected to the force-applying member (50). An adjustment module (43) is provided on both sides of the force-receiving part (42). The adjustment module (43) is used to adjust the position of the adjustment end (4221) relative to the outside of the force-receiving part (42) to change the angle of each swing arm (422) with the spindle (421) as the axis, so as to adjust the front and rear positioning of each swing end (4222).
4. The training device for electrically adjusting resistance intensity as described in claim 3 further includes a stop member (44) having a stop surface (441) that is vertically movable relative to an inclined surface (442) of the stop member (44) and positioned at a relative distance from the inclined surface (442). The force-applying member (50) includes a horizontal rod (51) pivotally mounted on the through hole (4223) and an auxiliary rod (52) detachably and vertically screwed onto the horizontal rod (51). The horizontal rod (51) is freely rotatable about the through hole (4223). The horizontal rod (51) has at least one gripping portion (511) and / or a pad portion (512). The horizontal rod (51) has a round pin (513) corresponding to the position of the stop member (44). With each swing arm (422) at an adjustment angle, after the auxiliary rod (52) is rotated forward and upward by a deflection angle, the outer diameter surface of the round pin (513) is in straight contact with the abutment surface (441).
5. The training device for electrically adjusting resistance intensity as described in claim 3, wherein, A force detector (45) is provided on the front side of the force-bearing part (42). One of the detection parts (451) of the force detector (45) is in contact with the spindle (421) to detect the force applied by the spindle (421) to the force-bearing part (42) by utilizing the degree of pressure.
6. The training device for electrically adjusting resistance intensity as described in claim 5, further comprising a display unit (70) coupled to the force detector (45) and the processing unit (60) for displaying the torque applied by the servo motor unit (20) to the drive sprocket (31).
7. The training device for electrically adjusting resistance intensity as described in claim 1, wherein, The platform (11) is generally parallel to a horizontal plane, and the main rail (12) is generally perpendicular to the platform (11).
8. The training device for electrically adjusting resistance intensity as described in claim 7, wherein, The torque applied by the servo motor unit (20) to the drive sprocket (31) is clockwise.
9. The training device for electrically adjusting resistance intensity as described in claim 7, wherein, The torque applied by the servo motor unit (20) to the drive sprocket (31) is counterclockwise.
10. The training device for electrically adjusting resistance intensity as described in claim 1, further comprising an input unit (80) coupled to the processing unit (60) for adjusting the torque value output by the servo motor unit (20).
11. The training device for electrically adjusting resistance intensity as described in claim 1, wherein, The processing unit (60) further includes a training data analysis unit (61) for tracking training resistance and repetition data, providing real-time analysis and training plan adjustment suggestions.
12. The training device for electrically adjusting resistance intensity as described in claim 1, further comprising a reinforcing assembly (14) including a pair of base pivots (141) mounted on the platform (11), a pair of fixing blocks (142) locked to the main rail (12), a shaft (143) disposed on the fixing block (142), and a pair of support rods (144) with adjustable length between the two ends respectively connected to the base pivot (141) and the shaft (143).