A spinning bike

Abstract

The present invention relates to the technical field of fitness equipment, and specifically to a spinning bike, comprising a base and a frame. A pitch adjustment assembly is provided on the base, and the pitch adjustment assembly comprises a screw rod, a drive block, an adjustment connecting rod and a drive motor. The drive block is guided to slide by the screw rod, and the angle of the frame is adjusted by adjusting the connecting rod while the drive block slides. Before the screw rod rotates, positioning blocks installed on both sides of the drive block can be unlocked from the base, so that the force generated by the frame can be transmitted to the base through the adjustment connecting rod, the drive block and the positioning block, thereby avoiding direct transmission of the force to the screw rod and the motor used to drive the screw rod to rotate, thereby solving the problem that the force is completely transmitted to the angle adjustment drive during the existing frame angle adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of fitness equipment, in particular to a spinning bike. Background Art

[0002] Spinning bikes have gradually become a popular aerobic exercise due to their ease of learning and ability to effectively train muscles throughout the body. They are widely used in gyms and home fitness centers. As a common piece of fitness equipment, they not only help people maintain a healthy body shape, but also improve cardiopulmonary function, becoming a part of modern fitness. However, most spinning bikes currently on the market are designed for indoor environments, which inevitably makes exercisers feel monotonous and lack sufficient stimulation during exercise. At the same time, these devices cannot realistically simulate the changes in road conditions during outdoor cycling, such as uphill and downhill natural terrain. Due to this limitation, existing spinning bikes have to some extent restricted their popularity and user experience, especially in fitness scenarios that require more interactivity and realism, and often fail to meet the needs of athletes.

[0003] Patent document publication number CN102814025B discloses an intelligent racing / fitness vehicle that can swing and pitch, including a vehicle body and a base that can be firmly placed on the ground or on a flat surface; the vehicle body includes a frame, drive wheels, pedals, damping wheels, handlebars and a seat; a swing mechanism is also installed between the vehicle frame and the base, the swing mechanism including a swing bracket and a swing support assembly, the swing bracket being connected to the base via the swing support assembly, so that the vehicle frame can swing left and right relative to the base; the racing / fitness vehicle also includes a pitch mechanism, which is installed between the vehicle frame and the swing bracket of the swing mechanism, so that the vehicle frame can pitch forward and backward relative to the swing bracket.

[0004] This device achieves pitching motion through a lifting rod, and is designed to enhance the user's exercise experience and comfort. However, an exercise bike will inevitably produce a certain amount of vibration during use, especially during high-intensity exercise, when the amplitude and frequency of the vibration may be large. Because the entire frame relies on the lifting rod for support, these vibrations will exert repeated pressure and impact on the lifting rod. After long-term use, the force applied to the lifting rod may cause fatigue, wear, or even breakage, affecting the stability and safety of the equipment. In addition, uneven force on the lifting rod may also cause other mechanical failures, such as loose connection parts and structural deformation, thereby affecting the normal use and life of the exercise bike. Summary of the Invention

[0005] In response to the problems existing in the existing technology, a spinning bike is provided, which guides the sliding of a driving block through a screw rod, and adjusts the angle of the frame by adjusting the connecting rod while the driving block slides. Before the screw rod rotates, the positioning blocks installed on both sides of the driving block can be unlocked from the base, so that the force generated by the frame can be transmitted to the base through the adjusting connecting rod, the driving block and the positioning blocks, avoiding the force being directly transmitted to the screw rod and the motor used to drive the screw rod to rotate, thereby solving the problem that the force is completely transmitted to the angle adjustment drive when the existing frame angle is adjusted.

[0006] In order to solve the problems of the prior art, the present invention provides a dynamic bicycle, comprising a base and a frame rotatably arranged on the base along the front and rear directions, the bottom end of the frame having a front connecting end and a rear connecting end located on both sides of its hinge point, an elastic buffer element is provided between the rear connecting end and the base, a pitch adjustment assembly is provided on the base, and the pitch adjustment assembly includes a screw rod, a driving block, an adjusting link and a driving motor, the screw rod is rotatably arranged on the base, the driving block is slidably arranged on the base, the screw rod passes through the driving block and cooperates with its spiral transmission, positioning blocks that can be locked with the base are provided on both sides of the driving block, and when the screw rod rotates, the positioning block is unlocked from the base and the driving block moves; the two ends of the adjusting link are respectively transmission-connected with the front connecting end and the driving block, the driving motor is arranged on the base, and the output shaft of the driving motor is transmission-connected with the screw rod.

[0007] Preferably, a fixing plate is provided on the base, and engaging grooves arranged at equal intervals are provided on the fixing plate. Engaging teeth arranged at equal intervals are provided on the side of the positioning block facing the fixing plate. When the engaging teeth form an engaging state with the engaging grooves, the driving block is locked with the base.

[0008] Preferably, a mounting groove is provided in the driving block, an internal threaded ring coaxial with the screw rod is provided in the mounting groove, an electromagnetic coil is provided at one end of the internal threaded ring, one end of the positioning block has a connecting arm extending into the mounting groove, and a transmission column distributed along its circumference is provided on the end face of the internal threaded ring, and a transmission connecting rod with ends rotatably connected thereto is provided between the transmission column and the connecting arm, when the transmission connecting rod remains horizontal, the positioning block is locked with the base, and when the internal threaded ring rotates, the transmission connecting rod tilts to drive the positioning block to move toward the driving block.

[0009] Preferably, there are two mounting grooves, which are respectively located on both sides of the moving direction of the driving block. The driving block is provided with a connecting tube rotatably connected thereto. The connecting tube is coaxial with the screw rod, and the end of the connecting tube is coaxially fixedly connected to the internal threaded ring.

[0010] Preferably, a rack capable of moving along the tangential direction of the internal thread ring is provided in the mounting groove, and tooth grooves distributed along its circumference are provided on the circumferential surface of the internal thread ring, and the rack is engaged with the tooth grooves. An elastic reset component for resetting the rack is also provided in the mounting groove, and the rack needs to overcome the elastic force of the elastic reset component when the internal thread ring rotates.

[0011] Preferably, the elastic reset assembly includes a polished rod and an elastic reset element, the polished rod is horizontally arranged in the mounting groove, the polished rod is perpendicular to the screw rod, a boss is provided at the top end of the rack, the polished rod passes through the boss and slides with it, there are two elastic reset elements, two elastic reset sleeves are arranged on the polished rod and are located on both sides of the boss.

[0012] Preferably, the base is provided with a guide rod extending along the length direction thereof, the bottom end of the driving block is provided with a guide block, and the guide rod passes through the guide block and is slidably engaged therewith.

[0013] Preferably, an articulated seat is provided on the base, and a base frame with an obtuse angle is provided at the bottom end of the frame, the base frame has a front arm and a rear arm, a hinge shaft is provided between the front arm and the rear arm, the front arm is rotatably connected to the adjusting link, the rear arm is rotatably connected to the elastic buffer element, and the hinge shaft is rotatably connected to the articulated seat.

[0014] Preferably, a reinforcing plate extending in a horizontal direction is provided between the front arm and the rear arm, and the reinforcing plate is higher than the hinge shaft.

[0015] Preferably, a damping wheel is provided on the frame, and an angle sensor is provided at the hinge of the frame. When the frame tilts backward, the rotational damping of the damping wheel increases, and when the frame tilts forward, the rotational damping of the damping wheel decreases.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The present application guides the sliding of the drive block through a screw rod. During the sliding process of the drive block, the angle of the connecting rod can be adjusted, thereby changing the tilt angle of the frame. In order to ensure the smoothness and stability of the frame adjustment, the screw rod is unlocked from the base through the positioning blocks installed on both sides of the drive block before rotation. When the drive block starts to slide, the force generated by the frame will be gradually transmitted to the base through the adjustment connecting rod, the drive block and the positioning block, thereby avoiding the force acting directly on the screw rod and the motor that drives the screw rod to rotate. In this way, when the frame angle is adjusted, the problem of the force being completely transmitted to the angle adjustment drive part in the previous design is avoided, which significantly reduces the burden on the screw rod and the motor and extends the service life of the equipment. It can effectively disperse and relieve the pressure during the frame adjustment process and reduce possible mechanical wear or overload. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of a spinning bike of the present invention.

[0019] Figure 2 It is a side view of a spinning bike of the present invention.

[0020] Figure 3 It is a three-dimensional diagram of a base and a pitch adjustment assembly in a spinning bike of the present invention.

[0021] Figure 4 yes Figure 3 A partial enlarged view of point A.

[0022] Figure 5 It is a three-dimensional exploded view of a pitch adjustment component in a spinning bike of the present invention.

[0023] Figure 6 yes Figure 5 A partial enlarged view of point B.

[0024] Figure 7 It is a three-dimensional exploded view of a driving block in a spinning bike of the present invention.

[0025] Figure 8 It is a schematic diagram of a spinning bike of the present invention in which a positioning block and a base are in a locked state.

[0026] Figure 9 The present invention is a schematic diagram of a positioning block when the internal thread ring of the spinning bike rotates counterclockwise.

[0027] Figure 10 It is a schematic diagram of a positioning block when the internal thread ring of a spinning bike of the present invention rotates clockwise.

[0028] The numbers in the figure are: 1. base; 11. fixing plate; 12. guide rod; 13. articulated seat; 2. frame; 21. front connecting end; 22. rear connecting end; 23. driving plate; 24. crank pedal; 25. damping wheel; 261. front arm; 262. rear arm; 263. articulated shaft; 264. reinforcing plate; 27. transmission belt; 3. elastic buffer element; 41. screw rod; 42. driving block; 421. guide block; 43. adjusting connecting rod; 44. driving motor; 45. positioning block; 451. connecting arm; 46. internal thread ring; 461. transmission column; 462. tooth groove; 47. transmission connecting rod; 48. connecting cylinder; 491. rack; 4911. boss; 492. light rod; 493. elastic reset element; 51. electromagnetic coil. DETAILED DESCRIPTION

[0029] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 、 Figure 2 and Figure 3 As shown, a spinning bike comprises a base 1 and a frame 2 rotatably arranged on the base 1 along the front-back direction, the bottom end of the frame 2 has a front connecting end 21 and a rear connecting end 22 located on both sides of its hinge point, an elastic buffer element 3 is arranged between the rear connecting end 22 and the base 1, and a pitch adjustment assembly is provided on the base 1, the pitch adjustment assembly comprises a screw rod 41, a driving block 42, an adjusting link 43 and a driving motor 44, the screw rod 41 is rotatably arranged on the base 1, the driving block 42 is slidably arranged on the base 1, the screw rod 41 passes through the driving block 42 and cooperates with the spiral transmission thereof, and positioning blocks 45 that can be locked with the base 1 are arranged on both sides of the driving block 42, and when the screw rod 41 rotates, the positioning block 45 is unlocked from the base 1 and the driving block 42 moves; the two ends of the adjusting link 43 are respectively transmission-connected with the front connecting end 21 and the driving block 42, the driving motor 44 is arranged on the base 1, and the output shaft of the driving motor 44 is transmission-connected with the screw rod 41.

[0031] The bottom end of the frame 2 is equipped with a front connection end 21 and a rear connection end 22, located on either side of its hinge point. An elastic buffer element 3 is positioned between the rear connection end 22 and the base 1 to effectively absorb vibrations generated during exercise, enhancing riding stability and comfort. The base 1 is equipped with a pitch adjustment assembly for adjusting the fore-aft tilt angle of the frame 2 to suit the different exercise needs of different users.

[0032] Screw rod 41 is rotatably mounted on base 1 and connected to drive block 42 via a screw drive, ensuring precise adjustment of the angle of frame 2. Drive block 42 is slidably mounted on base 1 and is fitted with positioning blocks 45 on either side that lock with base 1. When screw rod 41 rotates, positioning blocks 45 unlock from base 1, allowing drive block 42 to slide on base 1, thereby causing the pitch angle of frame 2 to change. The ends of adjustment link 43 are respectively connected to front connecting end 21 and drive block 42, allowing the sliding of drive block 42 to directly affect the fore-aft tilt angle of frame 2.

[0033] The device guides the driving block 42 to slide through the screw rod 41. During the sliding process of the driving block 42, the angle of the connecting rod 43 can be adjusted, thereby changing the tilt angle of the frame 2. In order to ensure the smoothness and stability of the adjustment of the frame 2, the screw rod 41 is unlocked from the base 1 through the positioning blocks 45 installed on both sides of the driving block 42 before rotation. When the driving block 42 begins to slide, the force generated by the frame 2 will be gradually transmitted to the base 1 through the adjustment connecting rod 43, the driving block 42 and the positioning blocks 45, thereby avoiding the force directly acting on the screw rod 41 and the motor that drives the screw rod 41 to rotate. In this way, when the angle of the frame 2 is adjusted, the problem of the force being completely transmitted to the angle adjustment drive part in the previous design is avoided, which significantly reduces the burden on the screw rod 41 and the motor and extends the service life of the equipment.

[0034] When the screw 41 stops rotating, the positioning blocks 45 mounted on either side of the drive block 42 lock with the base 1, ensuring that the force generated by adjusting the angle of the frame 2 is transmitted to the base 1 through the adjustment link 43, the drive block 42, and the positioning blocks 45. This design eliminates the direct force acting on the screw 41 and the motor that drives it, thus avoiding problems such as motor overload and screw 41 wear caused by excessive force transmission in traditional designs.

[0035] Furthermore, the frame 2 is equipped with a drive plate 23, crank pedals 24, and a damping wheel 25. A transmission belt 27 connects the drive plate 23 and the flywheel. Serving as a power transmission mechanism, the belt 27 transmits the user's pedaling force to the flywheel, generating sustained resistance and further enhancing exercise intensity. The damping wheel 25 adjusts the flywheel's resistance, allowing users to flexibly adjust it to their needs, thereby achieving a variety of different exercise modes.

[0036] like Figure 3 and Figure 5 As shown, a fixing plate 11 is provided on the base 1, and an occlusal groove arranged at equal intervals is provided on the fixing plate 11. The positioning block 45 is provided with occlusal teeth arranged at equal intervals on the side facing the fixing plate 11. When the occlusal teeth and the occlusal groove form an occlusal state, the driving block 42 is locked with the base 1.

[0037] When the frame 2 stops adjusting its angle and the screw 41 is stationary, the positioning block 45 engages with the equally spaced engaging grooves on the fixing plate 11 mounted on the base 1 through its equally spaced engaging teeth arranged on the side facing the fixing plate 11, thereby fixing the drive block 42. At this time, the precise fit between the engaging teeth and the engaging grooves ensures that the drive block 42 is firmly locked to the base 1, preventing unnecessary displacement of the drive block 42 due to external vibration or force after the frame 2 angle is adjusted. Through this design, the frame 2 can be stably maintained at the target angle after stopping adjustment, avoiding the instability of the frame 2 caused by loose locking. At the same time, the force generated by the frame 2 can be transmitted to the base 1 through the adjusting link 43, the drive block 42 and the positioning block 45, preventing the force from being transmitted to the screw 41 and the motor.

[0038] like Figure 5-10 As shown, a mounting groove is provided in the driving block 42, and an internal threaded ring 46 coaxial with the screw rod 41 is provided in the mounting groove, and an electromagnetic coil 51 is provided at one end of the internal threaded ring 46. One end of the positioning block 45 has a connecting arm 451 extending into the mounting groove, and a transmission column 461 distributed along its circumference is provided on the end face of the internal threaded ring 46. A transmission connecting rod 47 with ends rotatably connected thereto is provided between the transmission column 461 and the connecting arm 451. When the transmission connecting rod 47 remains horizontal, the positioning block 45 is locked with the base 1. When the internal threaded ring 46 rotates, the transmission connecting rod 47 tilts to drive the positioning block 45 to move toward the driving block 42.

[0039] Positioning blocks 45 are symmetrically mounted on either side of the driver block 42. Extending from one end of the positioning block 45 is a connecting arm 451, which precisely inserts into the mounting groove of the driver block 42. Multiple transmission posts 461 are distributed along the circumference of the internally threaded ring 46. A transmission connecting rod 47 is mounted between the transmission posts 461 and the connecting arm 451, with its ends pivotally connected to the transmission posts 461 and the connecting arm 451, respectively.

[0040] When the screw rod 41 has not yet begun to rotate, the transmission link 47 is in a horizontal state, and the positioning block 45 is tightly engaged with the base 1, achieving a secure lock. The force generated by the frame 2 can be smoothly transmitted to the base 1 through the adjustment link 43, the drive block 42, and the positioning block 45 in sequence. This prevents the force generated during frame 2 adjustment from being directly applied to the screw rod 41 and the motor used to drive the screw rod 41. This effectively solves the problem in existing frame 2 angle adjustment systems where the force is completely transmitted to the angle adjustment drive device, resulting in easy damage to the screw rod 41 and motor, shortening their lifespan. This significantly improves the reliability and durability of the entire frame 2 angle adjustment system.

[0041] When the angle of the vehicle frame 2 needs to be adjusted, the screw 41 begins to rotate. Since an electromagnetic coil 51 is provided at one end of the internally threaded ring 46, activating the electromagnetic coil 51 increases the friction between the internally threaded ring 46 and the screw 41, allowing the screw 41 to drive the internally threaded ring 46 to rotate synchronously. As the internally threaded ring 46 rotates, the transmission post 461 rotates synchronously with the internally threaded ring 46, causing the transmission connecting rod 47 to gradually tilt under the drive post 461's influence. This tilting motion is further transmitted to the connecting arm 451, which in turn drives the positioning block 45 toward the driving block 42, unlocking the positioning block 45 from the base 1.

[0042] In the unlocked state, the connecting arm 451 abuts against the outer side of the internal threaded ring 46, thereby locking the internal threaded ring 46 in the mounting groove until the rotational force of the screw rod 41 on the internal threaded ring 46 is greater than the magnetic force of the electromagnetic coil 51 on the screw rod 41, and the driving block 42 continues to slide under the rotation of the screw rod 41, and at the same time, the angle of the frame 2 is precisely adjusted by adjusting the connecting rod 43.

[0043] like Figure 5 、 Figure 6 and Figure 7 As shown, there are two mounting grooves, which are located on both sides of the moving direction of the driving block 42. The driving block 42 is provided with a connecting tube 48 rotatably connected thereto. The connecting tube 48 is coaxial with the screw rod 41, and the end of the connecting tube 48 is coaxially fixedly connected to the internal thread ring 46.

[0044] When the angle of the frame 2 needs to be adjusted, the screw 41 begins to rotate, driving the coaxial internally threaded ring 46 and connecting tube 48 to rotate together. As the internally threaded ring 46 rotates, the transmission column 461, located on its end surface, also performs a circular motion. Because the ends of the transmission connecting rod 47 are respectively connected to the transmission column 461 and the connecting arm 451, the circular motion of the transmission column 461 is converted by the transmission connecting rod 47 into a force acting on the connecting arm 451, causing the transmission connecting rod 47 to gradually tilt. This tilting motion is transmitted to the connecting arm 451, which in turn drives the positioning block 45 toward the drive block 42, thereby unlocking the positioning block 45 from the base 1.

[0045] Internal thread rings 46 are installed in both mounting grooves, and the two internal thread rings 46 are connected by a connecting tube 48, thereby increasing the length of the positioning block 45, improving the contact and fitting area between the positioning block 45 and the fixing plate 11, and improving the stability of the positioning block 45.

[0046] like Figure 6As shown, the mounting groove is provided with a rack 491 that can move along the tangential direction of the internal threaded ring 46, and the circumferential surface of the internal threaded ring 46 is provided with tooth grooves 462 distributed along its circumference. The rack 491 is engaged with the tooth grooves 462. The mounting groove is also provided with an elastic reset component for resetting the rack 491. When the internal threaded ring 46 rotates, the rack 491 needs to overcome the elastic force of the elastic reset component.

[0047] When the screw rod 41 has not yet started to rotate, the transmission connecting rod 47 remains horizontal, and the positioning block 45 is tightly fitted with the base 1 and is in a firmly locked state. At this time, the rack 491, under the action of the elastic reset component, is tightly fitted on the tooth groove 462 of the internal thread ring 46, ensuring the initial stability of the entire system. When the angle of the frame 2 needs to be adjusted, the screw rod 41 starts to rotate, driving the coaxial connecting tube 48 to rotate together. The rotation of the connecting tube 48 further drives the internal thread ring 46 fixedly connected to it to rotate. As the internal thread ring 46 rotates, the meshing rack 491, driven by the tooth groove 462, overcomes the elastic force of the elastic reset component and moves along the tangential direction of the internal thread ring 46.

[0048] When the screw rod 41 stops rotating and the internal threaded ring 46 no longer drives the rack 491 to move, the elastic reset assembly quickly takes effect, pulling the rack 491 back to its initial position, causing the internal threaded ring 46 to rotate a certain angle and keeping the positioning block 45 locked with the base 1, thus preparing for the next angle adjustment of the frame 2.

[0049] like Figure 6 As shown, the elastic reset assembly includes a light rod 492 and an elastic reset element 493. The light rod 492 is horizontally arranged in the mounting groove. The light rod 492 is perpendicular to the screw rod 41. A boss 4911 is provided at the top of the rack 491. The light rod 492 passes through the boss 4911 and slides with it. There are two elastic reset elements 493. Two elastic reset sleeves are arranged on the light rod 492 and are located on both sides of the boss 4911.

[0050] There are two elastic reset elements 493, which are respectively mounted on the polished rod 492 and located on both sides of the protrusion 4911. These two elastic reset elements 493 are usually made of high-strength, high-elasticity springs. One end of each of them is tightly against the side wall of the installation groove, and the other end is in close contact with the protrusion 4911. In the initial state, the elastic reset element 493 is in a naturally stretched state, providing a stable pre-tightening force for the rack 491, making it tightly fit against the tooth groove 462 of the internal threaded ring 46, ensuring the stability of the entire system when the screw rod 41 is not activated.

[0051] In the unlocked state, the driving block 42 continues to slide under the drive of the screw rod 41 , and the angle of the frame 2 is finely adjusted by adjusting the connecting rod 43 .

[0052] When the screw 41 stops rotating and the internally threaded ring 46 no longer drives the rack 491, the elastic reset elements 493 on both sides quickly take effect. Under the action of their own elastic force, they quickly pull the rack 491 back to its initial position along the polished rod 492, causing the internally threaded ring 46 to rotate a certain angle, thereby guiding the transmission link 47 to remain horizontal, so that the positioning block 45 is locked with the base 1. The force generated by the frame 2 is smoothly transmitted to the base 1 through the adjustment link 43, the drive block 42, and the positioning block 45 in sequence, effectively preventing the force from directly acting on the screw 41 and the drive motor 44, and solving the problem of the screw 41 and motor being easily damaged and having a short life in the traditional system.

[0053] like Figure 5 As shown, the base 1 is provided with a guide rod 12 extending along its length direction, and the bottom end of the driving block 42 is provided with a guide block 421. The guide rod 12 passes through the guide block 421 and slides with it.

[0054] The base 1 is provided with a guide rod 12 extending along its length. Similar to a track, the guide rod 12 provides clear directional guidance for the movement of the drive block 42. A guide block 421 is provided at the bottom end of the drive block 42. The guide rod 12 precisely passes through the guide block 421 and forms a sliding engagement with the guide block 421. As the drive block 42 moves due to the rotation of the screw 41, the guide block 421 slides smoothly along the guide rod 12, effectively limiting the deviation and shaking of the drive block 42 during movement, ensuring that the drive block 42 always moves precisely in the predetermined direction.

[0055] like Figure 2 、 Figure 3 and Figure 4 As shown, an articulated seat 13 is provided on the base 1, and a base frame with an obtuse angle is provided at the bottom end of the frame 2, the base frame has a front arm 261 and a rear arm 262, and a hinge shaft 263 is provided between the front arm 261 and the rear arm 262, the front arm 261 is rotatably connected to the adjusting link 43, the rear arm 262 is rotatably connected to the elastic buffer element 3, and the hinge shaft 263 is rotatably connected to the articulated seat 13.

[0056] The unique obtuse-angle shape of the chassis provides a good foundation for the angle adjustment and overall stability of the frame 2. The chassis has a front arm 261 and a rear arm 262, with a hinge shaft 263 provided between the front arm 261 and the rear arm 262. This hinge shaft 263 enables relative rotation between the front arm 261 and the rear arm 262, providing the possibility for flexible deformation of the frame 2 during the angle adjustment process. The front arm 261 is rotatably connected to the adjustment link 43. When the drive block 42 pushes the frame 2 for angle adjustment through the adjustment link 43, the front arm 261 can flexibly rotate around the connection point with the adjustment link 43, accurately transmitting the driving force of the adjustment link 43 to the frame 2. The rear arm 262 is rotatably connected to the elastic buffer element 3, which is a gas spring that can play a role in buffering and shock absorption.

[0057] The hinge shaft 263 is rotatably connected to the hinge seat 13 on the base 1, so that the entire frame 2 can adjust the angle of the base 1 with the hinge shaft 263 as the center, thereby achieving flexible change of the angle of the frame 2.

[0058] like Figure 4 As shown, a reinforcing plate 264 extending in the horizontal direction is provided between the front arm 261 and the rear arm 262 , and the reinforcing plate 264 is higher than the hinge shaft 263 .

[0059] When the frame 2 is adjusting its angle, the reinforcement plate 264 effectively disperses the forces generated by the adjustment link 43 and the frame 2 itself due to the angle change. During this process, the front arm 261 and rear arm 262 move relative to each other around the hinge shaft 263. Due to its superior position above the hinge shaft 263, the reinforcement plate 264 effectively distributes the torsional stress caused by this relative motion, preventing excessive stress concentration near the hinge shaft 263. This protects the hinge shaft 263 and surrounding components from excessive forces, thereby extending the service life of these components.

[0060] like Figure 1 and Figure 2 As shown, a damping wheel 25 is provided on the frame 2, and an angle sensor is provided at the hinge of the frame 2. When the frame 2 tilts backward, the rotational damping of the damping wheel 25 increases, and when the frame 2 tilts forward, the rotational damping of the damping wheel 25 decreases.

[0061] When the spinning bike simulates climbing a hill and the frame 2 tilts backward, the inductive components within the damping wheel 25 generate greater resistance, ultimately increasing rotational damping. This creates a feeling of climbing a hill, provides ample time for users to adjust their riding posture, and ensures stability and safety during simulated climbing.

[0062] Conversely, when the spinning bike simulates a downhill ride and the frame 2 tilts forward, the friction between the internal damping wheel 25 and the damping element is reduced, thereby reducing rotational damping. This allows the user to easily simulate the acceleration sensation of a downhill ride, preventing excessive damping from hindering the normal forward tilt of the frame 2. This ensures that the user maintains good riding control and stability in simulated downhill riding and other various riding situations.

[0063] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. A spinning bike comprising a base and a frame rotatably mounted on the base in a front-to-rear direction, wherein the bottom end of the frame has a front connecting end and a rear connecting end located on both sides of a hinge point thereof, characterized in that: An elastic buffer element is provided between the rear connecting end and the base, and a pitch adjustment assembly is provided on the base, and the pitch adjustment assembly includes a screw rod, a driving block, an adjusting link and a driving motor, the screw rod is rotatably arranged on the base, and the driving block is slidably arranged on the base, the screw rod passes through the driving block and cooperates with its spiral transmission, and positioning blocks that can be locked with the base are provided on both sides of the driving block, and when the screw rod rotates, the positioning block is unlocked from the base and the driving block moves; the two ends of the adjusting link are respectively transmission-connected to the front connecting end and the driving block, the driving motor is arranged on the base, and the output shaft of the driving motor is transmission-connected to the screw rod; The driving block is provided with a mounting groove, an internal threaded ring coaxial with the screw rod is provided in the mounting groove, an electromagnetic coil is provided at one end of the internal threaded ring, one end of the positioning block has a connecting arm extending into the mounting groove, and a transmission column distributed along its circumference is provided on the end surface of the internal threaded ring, and a transmission connecting rod with ends rotatably connected thereto is provided between the transmission column and the connecting arm. When the transmission connecting rod remains horizontal, the positioning block is locked with the base. When the internal threaded ring rotates, the transmission connecting rod tilts to drive the positioning block to move toward the driving block. There are two mounting grooves, which are respectively located on both sides of the moving direction of the driving block. The driving block is provided with a connecting tube rotatably connected thereto. The connecting tube is coaxial with the screw rod, and the end of the connecting tube is coaxially fixedly connected to the internal threaded ring.

2. The spinning bike according to claim 1, characterized in that: The base is provided with a fixing plate, the fixing plate is provided with engaging grooves arranged at equal intervals, and the side of the positioning block facing the fixing plate is provided with engaging teeth arranged at equal intervals. When the engaging teeth and the engaging grooves form an engaging state, the driving block and the base are locked.

3. The spinning bike according to claim 1, characterized in that: A rack capable of moving along the tangential direction of the internal thread ring is provided in the mounting groove, and tooth grooves distributed along its circumference are provided on the circumferential surface of the internal thread ring, and the rack is engaged with the tooth grooves. An elastic reset component for resetting the rack is also provided in the mounting groove, and the rack needs to overcome the elastic force of the elastic reset component when the internal thread ring rotates.

4. The spinning bike according to claim 3, characterized in that: The elastic reset assembly includes a polished rod and an elastic reset element. The polished rod is horizontally arranged in the mounting groove. The polished rod is perpendicular to the screw rod. A boss is provided at the top of the rack. The polished rod passes through the boss and slides with it. There are two elastic reset elements. Two elastic reset sleeves are arranged on the polished rod and located on both sides of the boss.

5. The spinning bike according to claim 1 or 2, characterized in that: The base is provided with a guide rod extending along the length direction thereof, the bottom end of the driving block is provided with a guide block, and the guide rod passes through the guide block and is slidably engaged with the guide block.

6. The spinning bike according to claim 1 or 2, characterized in that: An articulated seat is provided on the base, and a base frame with an obtuse angle is provided at the bottom end of the frame. The base frame has a front arm and a rear arm, and a hinge shaft is provided between the front arm and the rear arm. The front arm is rotatably connected to the adjusting link, the rear arm is rotatably connected to the elastic buffer element, and the hinge shaft is rotatably connected to the articulated seat.

7. The spinning bike according to claim 6, characterized in that: A reinforcing plate extending in a horizontal direction is provided between the front arm and the rear arm, and the reinforcing plate is higher than the hinge shaft.

8. The spinning bike according to claim 1, characterized in that: The frame is provided with a damping wheel, and an angle sensor is provided at the hinge of the frame. When the frame tilts backward, the rotation damping of the damping wheel increases, and when the frame tilts forward, the rotation damping of the damping wheel decreases.

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