Fitness spinning
By using the threaded fit between the screw and the sleeve, and the design of the clip and the slot, the resistance of the exercise bike can be flexibly adjusted and intelligent safety protection can be achieved. This solves the problems of fixed resistance and unresponsiveness in existing technologies, and improves the applicability and safety of the equipment.
Patent Information
- Application Number
- CN202520228858.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing exercise bikes lack personalized resistance adjustment capabilities, cannot adapt to the strength characteristics of different users, pose safety hazards, and have poor equipment stability.
By employing the threaded engagement of a screw and a screw sleeve, combined with a movable bracket and a combination of latches and slots, along with a control device, the rotational resistance of the driven wheel is flexibly adjusted through the threaded engagement of the screw and the screw sleeve, and the rotational operation of the adjusting sleeve. Furthermore, the cooperation between the bracket and the slot enables intelligent safety protection functions.
It enables flexible adjustment of exercise intensity according to the user's physical fitness level, improves the applicability and safety of the equipment, solves the problems of fixed resistance and unresponsiveness of traditional exercise bikes, and enhances fitness effects and safety of use.
Smart Images
Figure CN223732022U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of body -building equipment more specifically, it relates to a body -building spin bike. BACKGROUND
[0002] In the current field of body -building equipment, spin bike as a kind of popular aerobic exercise equipment, plays an important role in people's health and physical fitness, however, the existing spin bike technology still has many deficiencies, these problems not only affect the fitness effect, also possibly brings potential safety risk and bad experience to user.
[0003] First, the traditional spin bike design usually adopts the mechanism of simple driving wheel driving driven wheel to realize wheel rotation and fitness purpose, this design although simple structure, easy to manufacture and maintain, but there is a significant defect: lack of the ability to flexibly adjust the driven wheel rotation resistance according to individual strength characteristics, the strength characteristics of human body greatly differ due to age, gender, body shape and training level etc. factors, fixed resistance setting can lead to two extreme cases: for the user with weak strength, resistance can be too large, lead to unable to sustain movement or easily produce fatigue, and for the user with strong strength, resistance can be insufficient, unable to achieve ideal training effect, this "one size fits all" design seriously limits the scope of the applicable population of equipment, not only reduces the fitness effect, also possibly discourages the enthusiasm of user, affects the willingness of long-term adherence to exercise.
[0004] Secondly, in the process of using spin bike, user can encounter sudden physical condition, such as exhaustion or muscle cramp, in these cases, if the equipment cannot stop the rotation of driven wheel in time, can cause serious physical injury to user, for example, when user cannot continue to pedal due to exhaustion, the driven wheel rotating at high speed can cause the passive rapid movement of user's legs, increase the risk of muscle strain or joint injury, more seriously, if user suddenly appears heart discomfort in high-intensity exercise, etc. emergency, unable to stop the operation of equipment quickly can increase the burden on the body, even endanger life safety, however, the existing technology generally lacks the safety mechanism that can quickly respond according to the real-time state of user, in addition, due to the different strength characteristics and endurance level of different personnel, fixed trigger mechanism is difficult to meet the needs of all users, for the user with good physical fitness, in the use of gap type high-intensity training, too sensitive stop mechanism can frequently interrupt training, affect the exercise effect, and for the user with weak physical fitness or with special needs, not sensitive enough mechanism can not provide protection in time, this design lacking individual customization ability, not only can not guarantee good fitness experience, also possibly increases the use risk.
[0005] In addition, in view of the above problems, some manufacturers try to introduce adjustable triggering mechanism in the spinning bike to achieve more flexible personalized settings, and this improvement does improve the adaptability of the device to a certain extent, allowing users to adjust the threshold of the safety trigger according to their own conditions, however, these adjustment mechanisms still have serious deficiencies in design and implementation, the most prominent problem is that these adjustment devices usually adopt simple mechanical structure, and there are obvious stability problems in actual use, the spinning bike will produce continuous vibration and impact during use, and these external disturbances may cause the precise adjustment mechanism to gradually loosen or dislocate, for example, when the user performs high-intensity interval training, frequent acceleration and deceleration may cause greater stress to the device structure, causing the originally adjusted triggering mechanism to change slightly but critically, this instability not only affects the reliability of the device, but also may cause the safety mechanism to fail at a critical moment, more seriously, the user may continue to use the device that has deviated without knowing, which increases the potential safety hazard. Content of the utility model
[0006] (I) Technical problems solved
[0007] In view of the problems in the prior art, the utility model provides a fitness spinning bike to solve the technical problems mentioned in the background art.
[0008] (II) Technical solutions
[0009] In order to achieve the above purpose, the utility model provides the following technical scheme: a fitness spinning bike, comprising a frame, an adjusting device is arranged on the inner side of the frame, a driven wheel and a driving wheel are movably arranged on the inner side of the frame, chain wheels are connected on one side of the driven wheel and the driving wheel, chains are sleeved on the outer side of the chain wheels, a protection device is arranged on one side of the driven wheel, the protection device comprises a control sleeve, a protective sleeve, an adjusting groove, a protective rod, a moving sleeve, an adjusting block, a top spring, a top block, a clamping frame and a clamping groove, the control sleeve is rotatably connected on the outer side of the protective sleeve, one end of the protective sleeve is connected with the chain wheel, the adjusting groove is arranged on the inner side of the protective sleeve, the protective rod is connected on one side of the driven wheel, the moving sleeve is movably connected with the inner wall of the control sleeve through threads, the adjusting block is movably arranged in the adjusting groove, the top spring is connected with the top block and the adjusting block at both ends, the clamping frame is movably arranged on one side of the top block, one end of the clamping frame is inserted into the clamping groove, the clamping groove is arranged on the outer side of the protective rod, a locking mechanism is arranged on the outer side of the protective sleeve, the locking mechanism comprises a locking groove, a locking rod and a locking sleeve, a plurality of locking grooves are arranged on the outer side of the protective sleeve, a plurality of locking rods are movably arranged on the side wall of the control sleeve, and the inner end of the locking rod is inserted into the locking groove, and the locking sleeve is movably connected with the outer wall of the protective sleeve through threads.
[0010] The present invention is further configured such that a sliding groove is provided on the side wall of the protective sleeve, a slider is slidably provided in the sliding groove, and the inner wall of the movable sleeve is fixedly connected to the outer side of the adjustment block through the slider.
[0011] The present invention is further configured such that the end of the card holder and one side wall of the card slot are both treated with a rounded corner structure.
[0012] The present invention is further provided that the end of the locking rod and the edge of the inner wall of the locking groove are both designed with rounded corners.
[0013] The present invention is further configured such that a connecting spring is provided on the outer side of the control sleeve, and the outer end of the locking rod is connected to the outer wall of the control sleeve through the connecting spring. The setting of the connecting spring ensures the stable use of the locking rod.
[0014] The present invention is further configured such that the adjustment device includes a screw, a screw sleeve, a mounting bracket, a magnetic block, and an elastic plate. The screw is movably connected to the screw sleeve via a thread. The screw sleeve is fixedly installed on the vehicle frame. The mounting bracket is detachably installed on one side of the vehicle frame. One end of the elastic plate is rotatably connected to the screw, and the other end of the elastic plate is detachably connected to the inner wall of the mounting bracket. The magnetic block is installed on the lower side of the elastic plate, and the driven wheel is made of magnetic material. The establishment of the adjustment device realizes the adjustment of the rotational resistance of the driven wheel.
[0015] The present invention is further provided that an adjusting sleeve is connected to the top end of the screw, and the adjusting sleeve facilitates the rotation of the screw.
[0016] The present invention is further configured such that a seat is detachably provided on the frame, and pedals are connected to both sides of the drive wheel. The configuration of the seat and pedals ensures the normal use of the exercise bike.
[0017] (III) Beneficial Effects
[0018] Compared with the prior art, this utility model provides a fitness exercise bike with the following beneficial effects:
[0019] 1. The adjustment device achieves helical movement of the screw through the threaded engagement of the screw and the screw sleeve, combined with the rotation of the adjustment sleeve. The screw drives the elastic plate to bend or reset, thereby controlling the distance between the magnetic block and the driven wheel and effectively adjusting the rotational resistance of the driven wheel. This design is not only easy to operate, but also allows for flexible adjustment of exercise intensity according to the user's physical fitness level and training needs. It solves the problem of fixed resistance and lack of personalized adjustment in traditional exercise bikes, significantly improving the applicability and training effect of the equipment.
[0020] 2、The protection device adopts an innovative card frame and card slot cooperation mechanism, through the ingenious cooperation of the protection sleeve, protection rod, moving sleeve and other components, the intelligent safety protection function is realized, when the user normally exercises, the card frame is stably embedded in the card slot, the continuity of power transmission is ensured, when the emergency occurs, due to the single-side round corner design of the card slot, the round corner structure of the card frame end, the card frame can be separated from the card slot under the action of appropriate force, meanwhile, through the cooperation of the adjusting block, top spring and top block, the sensitivity of the trigger mechanism can be flexibly adjusted, the design not only can respond to the emergency in time, prevent the harm to the user, but also can set the protection trigger threshold according to the needs of different users, effectively solve the problems of fixed safety protection mechanism and insensitive reaction in the prior art.
[0021] 3、The locking mechanism realizes the reliable fixation of the adjusting structure through the precise cooperation of the lock sleeve, lock rod and lock slot, in combination with the auxiliary action of the connecting spring, when the trigger mechanism adjustment is completed, the lock rod is automatically inserted into the lock slot under the action of the connecting spring, the lock sleeve is limited to the lock rod through threaded movement, multiple locking effects are formed, the design not only ensures the stability of the adjusted structure, prevents the trigger mechanism from being deviated due to vibration in the use process of the equipment, but also is convenient to operate, greatly improves the reliability and use safety of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is a whole structure schematic view of a fitness dynamic bicycle in the utility model;
[0023] Figure 2 It is a sectional structure schematic view of a frame and driven wheel part in the utility model;
[0024] Figure 3 It is a structure schematic view of a driven wheel part in the utility model;
[0025] Figure 4 It is a sectional structure schematic view of a protection device and locking mechanism part in the utility model;
[0026] Figure 5 It is a structure schematic view of a protection rod and moving sleeve part in the utility model.
[0027] In the drawing: 1, frame; 2, driven wheel; 3, driving wheel; 4, chain wheel; 5, chain; 6, control sleeve; 7, protection sleeve; 8, adjusting groove; 9, protection rod; 10, moving sleeve; 11, adjusting block; 12, top spring; 13, top block; 14, card frame; 15, card slot; 16, lock slot; 17, lock rod; 18, lock sleeve; 19, sliding groove; 20, sliding block; 21, connecting spring; 22, screw; 23, screw sleeve; 24, mounting frame; 25, magnetic block; 26, elastic plate; 27, adjusting sleeve; 28, saddle; 29, pedal. DETAILED DESCRIPTION
[0028] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.
[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.
[0030] In the present application, unless otherwise stated, the orientation such as "up, down" is generally with respect to the direction shown in the drawings, or with respect to the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left, right" is generally with respect to the left and right shown in the drawings; "inner, outer" refers to the inner and outer of the contour of each component itself, but the above orientation words are not used to limit the present application.
[0031] Please refer to Figures 1-5 A fitness exercise bike, comprising a frame 1, the inside of the frame 1 is provided with an adjusting device, the inside of the frame 1 is movably provided with a driven wheel 2 and a driving wheel 3, the driven wheel 2 and the driving wheel 3 are connected with a sprocket 4 on one side, the sprocket 4 is sleeved with a chain 5 on the outside, the driven wheel 2 is provided with a protection device on one side, the protection device comprises a control sleeve 6, a protective sleeve 7, an adjusting groove 8, a protective rod 9, a moving sleeve 10, an adjusting block 11, a top spring 12, a top block 13, a clamping frame 14 and a clamping groove 15, the control sleeve 6 is rotatably connected on the outside of the protective sleeve 7, one end of the protective sleeve 7 is connected with the sprocket 4, the adjusting groove 8 is formed in the inside of the protective sleeve 7, the protective rod 9 is connected on one side of the driven wheel 2, the moving sleeve 10 is movably connected with the inner wall of the control sleeve 6 through threads, the adjusting block 11 is movably arranged in the adjusting groove 8, the top spring 12 is connected with the top block 13 and the adjusting block 11 at both ends respectively, the clamping frame 14 is movably arranged on one side of the top block 13, and one end of the clamping frame 14 is inserted into the clamping groove 15, the clamping groove 15 is formed on the outside of the protective rod 9, the outside of the protective sleeve 7 is provided with a locking mechanism, the locking mechanism comprises a locking groove 16, a locking rod 17 and a locking sleeve 18, a plurality of locking grooves 16 are formed on the outside of the protective sleeve 7, a plurality of locking rods 17 are slidably arranged on the side wall of the control sleeve 6, and the inner end of the locking rod 17 is inserted into the locking groove 16, and the locking sleeve 18 is movably connected with the outer wall of the protective sleeve 7 through threads.
[0032] A sliding groove 19 is formed in the side wall of the protective sleeve 7, a sliding block 20 is slidably arranged in the sliding groove 19, and the inner wall of the moving sleeve 10 is fixedly connected with the outside of the adjusting block 11 through the sliding block 20.
[0033] The end of the clamping frame 14 and one side wall of the clamping groove 15 are both treated with a rounded corner structure.
[0034] The end of the locking rod 17 and the inner wall edge of the locking groove 16 are both designed with a rounded corner.
[0035] The outer side of the control sleeve 6 is provided with a connecting spring 21, and the outer end of the lock rod 17 is connected with the outer wall of the control sleeve 6 through the connecting spring 21.
[0036] In this embodiment, when it is needed to adjust the trigger mechanism to be less likely to be triggered, first rotate the lock sleeve 18 in the positive direction, so that the lock sleeve 18 moves along the threads on the outer wall of the protective sleeve 7, then the lock sleeve 18 no longer limits the lock rod 17, then rotate the control sleeve 6 in the positive direction, then the control sleeve 6 moves the plurality of lock rods 17 which are arranged to slide on the side wall, then the inner wall of the lock slot 16 extrudes one end of the lock rod 17, and due to the round corner design of the edge of the inner wall of the lock slot 16 and the end of the lock rod 17, then the inner end of the lock rod 17 slides out of the lock slot 16, and the other end of the lock rod 17 stretches the connecting spring 21, at the same time, due to the movable sleeve 10 being movably connected with the inner wall of the control sleeve 6 through threads, and the sliding block 20 and the sliding slot 19 limiting the movable sleeve 10, the movable sleeve 10 will not rotate, then the movable sleeve 10 drives the sliding block 20 to slide along the sliding slot 19, and the movable sleeve 10 drives the adjusting block 11 to slide in the adjusting slot 8 through the sliding block 20, then the distance between the adjusting block 11 and the top block 13 is shortened, and the adjusting block 11 extrudes the top spring 12 in cooperation with the top block 13, so that the pressure exerted by the top spring 12 on the top block 13 increases, and the pressure exerted by the top block 13 on the clamping frame 14 increases, thereby making the clamping frame 14 more difficult to slide out of the clamping slot 15, so as to achieve the purpose of making the trigger mechanism less likely to be triggered, when it is needed to adjust the trigger mechanism to be more likely to be triggered, reverse rotate the control sleeve 6, after adjusting appropriately, stop rotating the control sleeve 6, and make the connecting spring 21 drive the lock rod 17 to slide back to the original position, then the other end of the lock rod 17 slides into the corresponding lock slot 16, then reverse rotate the lock sleeve 18, so that the lock sleeve 18 resets along the threads on the outer wall of the protective sleeve 7, then the inner wall of the lock sleeve 18 limits the outer end of the lock rod 17, so that the lock rod 17 cannot move, then the lock rod 17 and the lock slot 16 cooperate to lock and fix the control sleeve 6, thereby ensuring the structural stability of the mechanism after adjustment, and further ensuring the stable use of the equipment.
[0037] Please refer to Figures 1-3 , as an embodiment of the adjusting device: the adjusting device comprises a screw rod 22, a screw sleeve 23, a mounting frame 24, a magnetic block 25 and an elastic plate 26, the screw rod 22 is movably connected with the screw sleeve 23 through threads, the screw sleeve 23 is fixedly installed on the vehicle frame 1, the mounting frame 24 is detachably installed on one side of the vehicle frame 1, one end of the elastic plate 26 is rotatably connected with the screw rod 22, the other end of the elastic plate 26 is detachably connected with the inner wall of the mounting frame 24, the magnetic block 25 is installed on the lower side of the elastic plate 26, and the driven wheel 2 is made of magnetic material.
[0038] The top end of the screw rod 22 is connected with an adjusting sleeve 27.
[0039] The frame 1 is detachably provided with a seat 28, and the both sides of the driving wheel 3 are connected with pedals 29.
[0040] More specifically, when the device is needed to be used, first, the trigger mechanism of the protection device is adjusted according to the characteristics of the user, then the adjusting sleeve 27 is rotated, so that the adjusting sleeve 27 drives the screw rod 22 to rotate, since the outer wall of the screw rod 22 is movably connected with the inner wall of the screw sleeve 23 through threads, and the screw sleeve 23 is fixedly installed on the frame 1 and cannot rotate, then the screw rod 22 will move along the screw sleeve 23 spirally, since the end of the screw rod 22 is rotatably connected with the elastic plate 26, and one end of the elastic plate 26 is detachably installed on the inner side of the mounting frame 24, so that one end of the elastic plate 26 cannot move, then the screw rod 22 will drive the elastic plate 26 to bend or reset, then the elastic plate 26 drives the magnetic block 25 arranged on one side to move, so that the magnetic block 25 approaches or moves away from the driven wheel 2, the magnetic block 25 approaches to increase the rotational resistance of the driven wheel 2, and the magnetic block 25 moves away to reduce the rotational resistance of the driven wheel 2, after adjustment, stop rotating the adjusting sleeve, then sit on the seat 28, hold the handlebar arranged at the top end of the frame 1 with both hands, and place both feet stably on the two pedals 29, then drive the pedals 29 with both feet, so that the pedals 29 drive the driving wheel 3 to rotate, then the driving wheel 3 drives the sprocket 4 arranged on one side to rotate, thereby driving the chain 5 sleeved outside the sprocket 4 to run, then the chain 5 drives the other sprocket 4 to rotate, then the sprocket 4 here drives the protective sleeve 7 connected on one side to rotate, then the protective sleeve 7 drives the adjusting groove 8, the top block 13 and the clamping frame 14 to rotate, then the clamping frame 14 drives the protective rod 9 to rotate through the cooperation of the clamping frame 14 and the clamping groove 15, then the protective rod 9 drives the driven wheel 2 to rotate, and cooperates with the resistance of the magnetic block 25 to achieve the purpose of fitness, and since the clamping groove 15 is provided with a rounded structure on one side, when the pedals 29 are rotated clockwise by both feet, one end of the clamping frame 14 cannot be separated from the clamping groove 15, when the user has a sudden situation, the driven wheel 2 continues to rotate, and the driving wheel 3 cannot continue to rotate due to the user, then the protective rod 9 is subjected to resistance on the opposite side, then the side wall with the rounded corner of the clamping groove 15 extrudes the end of the clamping frame 14, since the rounded corner structure of the clamping groove 15 and the rounded corner structure of the end of the clamping frame 14, then the end of the clamping frame 14 gradually separates from the clamping groove 15, then the other end of the clamping frame 14 extrudes the top block 13 arranged in the adjusting groove 8, so that the top block 13 slides along the adjusting groove 8, and the top block 13 cooperates with the adjusting block 11 to extrude the top spring 12, thereby making the driven wheel 2 drive the protective rod 9 and the clamping groove 15 to idle, preventing causing secondary injury to the user, and achieving safety protection for the user.
[0041] In summary, when the trigger mechanism needs to be adjusted to be less likely to be triggered, first rotate the lock sleeve 18 in the forward direction, so that the lock sleeve 18 moves along the threads on the outer wall of the protective sleeve 7, then the lock sleeve 18 no longer limits the lock rod 17, then rotate the control sleeve 6 in the forward direction, then the control sleeve 6 moves the multiple lock rods 17 that are slidingly arranged on the side wall, then the inner wall of the lock slot 16 presses one end of the lock rod 17, and due to the rounded design of the edge of the inner wall of the lock slot 16 and the end of the lock rod 17, the inner end of the lock rod 17 slides out of the lock slot 16, and the other end of the lock rod 17 stretches the connecting spring 21, and at the same time, due to the movable connection between the outer wall of the moving sleeve 10 and the inner wall of the control sleeve 6 through threads, and the limitation of the sliding block 20 and the sliding groove 19 on the moving sleeve 10, the moving sleeve 10 cannot rotate, then the moving sleeve 10 drives the sliding block 20 to slide along the sliding groove 19, and the moving sleeve 10 drives the adjustment block 11 to slide in the adjustment groove 8 through the sliding block 20, then the distance between the adjustment block 11 and the top block 13 is shortened, and the adjustment block 11 presses the top spring 12 in cooperation with the top block 13, so that the top spring 12 increases the pressure exerted on the top block 13, and the top block 13 increases the pressure exerted on the clamping frame 14, so that the clamping frame 14 is more difficult to slide out of the clamping slot 15, thereby achieving the purpose of making the trigger mechanism less likely to be triggered. When the trigger mechanism needs to be adjusted to be more likely to be triggered, rotate the control sleeve 6 in the reverse direction, and after adjusting appropriately, stop rotating the control sleeve 6, and the connecting spring 21 drives the lock rod 17 to slide back to its original position, then the other end of the lock rod 17 slides into the corresponding lock slot 16, then rotate the lock sleeve 18 in the reverse direction, so that the lock sleeve 18 resets along the threads on the outer wall of the protective sleeve 7, then the inner wall of the lock sleeve 18 limits the outer end of the lock rod 17, so that the lock rod 17 cannot move, then the lock rod 17 and the lock slot 16 cooperate to lock and fix the control sleeve 6, thereby ensuring the structural stability of the mechanism after adjustment, and further ensuring the stable use of the device.
[0042] When the device needs to be used, first, the trigger mechanism of the protection device is adjusted according to the characteristics of the user, then the adjusting sleeve 27 is rotated, so that the adjusting sleeve 27 drives the screw rod 22 to rotate, because the outer wall of the screw rod 22 is movably connected with the inner wall of the screw sleeve 23 through threads, and the screw sleeve 23 is fixedly installed on the frame 1 and cannot rotate, then the screw rod 22 will move spirally along the screw sleeve 23, because the end of the screw rod 22 is rotatably connected with the elastic plate 26, and one end of the elastic plate 26 is detachably installed on the inner side of the mounting bracket 24, so that one end of the elastic plate 26 cannot move, then the screw rod 22 drives the elastic plate 26 to bend or reset, then the elastic plate 26 drives the magnetic block 25 arranged on one side to move, so that the magnetic block 25 approaches or moves away from the driven wheel 2, the magnetic block 25 approaches to increase the rotational resistance of the driven wheel 2, and the magnetic block 25 moves away to reduce the rotational resistance of the driven wheel 2, after adjustment, stop rotating the adjusting sleeve, then sit on the saddle 28, hold the handlebar arranged at the top end of the frame 1 with both hands, and stably place both feet on the two footrests 29, then drive the footrest 29 with both feet, so that the footrest 29 drives the driving wheel 3 to rotate, then the driving wheel 3 drives the sprocket 4 arranged on one side to rotate, thereby driving the chain 5 sleeved outside the sprocket 4 to run, then the chain 5 drives the other sprocket 4 to rotate, then the sprocket 4 here drives the protective sleeve 7 connected on one side to rotate, then the protective sleeve 7 drives the adjusting groove 8, the top block 13 and the clamping frame 14 to rotate, then drives the protection rod 9 to rotate through the cooperation of the clamping frame 14 and the clamping groove 15, then the protection rod 9 drives the driven wheel 2 to rotate, and cooperates with the resistance of the magnetic block 25 to achieve the purpose of fitness, and because the clamping groove 15 is provided with a rounded structure on one side, when the footrest 29 is rotated clockwise, one end of the clamping frame 14 will not be separated from the clamping groove 15, when the user has a sudden situation, the driven wheel 2 continues to rotate, and the driving wheel 3 cannot continue to rotate due to the user, then the protection rod 9 is subjected to resistance on the opposite side, then the side wall with the rounded corner of the clamping groove 15 extrudes the end of the clamping frame 14, because of the rounded corner structure of the clamping groove 15 and the rounded corner structure of the end of the clamping frame 14, then the end of the clamping frame 14 will gradually separate from the clamping groove 15, then the other end of the clamping frame 14 extrudes the top block 13 arranged in the adjusting groove 8, so that the top block 13 slides along the adjusting groove 8, and the top block 13 will cooperate with the adjusting block 11 to extrude the top spring 12, thereby making the driven wheel 2 drive the protection rod 9 and the clamping groove 15 to idle, preventing causing secondary harm to the user, and achieving safety protection for the user.
[0043] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection mode, which will not be described here. In the above, whenever there is a fixed connection, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An exercise spin bike comprising a frame (1), characterized in that: The frame (1) is provided with an adjusting device, and the frame (1) is provided with a driven wheel (2) and a driving wheel (3). The driven wheel (2) and the driving wheel (3) are provided with a sprocket (4) on one side. The sprocket (4) is provided with a chain (5) on the outside. The driven wheel (2) is provided with a protection device on one side. The protection device comprises a control sleeve (6), a protective sleeve (7), an adjusting groove (8), a protective rod (9), a moving sleeve (10), an adjusting block (11), a top spring (12), a top block (13), a clamping frame (14) and a clamping groove (15). The adjusting groove (8) is arranged on the inside of the protective sleeve (7). The moving sleeve (10) is connected with the control sleeve (6) through threads. The adjusting block (11) is arranged in the adjusting groove (8). The top spring (12) is connected with the top block (13) and the adjusting block (11) at both ends. The clamping frame (14) is arranged on one side of the top block (13). The clamping groove (15) is arranged on the outside of the protective rod (9). The protective sleeve (7) is provided with a locking mechanism on the outside. The locking mechanism comprises a locking groove (16), a locking rod (17) and a locking sleeve (18). A plurality of locking grooves (16) are arranged on the outside of the protective sleeve (7). A plurality of locking rods (17) are arranged on the side wall of the control sleeve (6). The inner end of the locking rod (17) is inserted into the locking groove (16). The locking sleeve (18) is movably connected with the outer wall of the protective sleeve (7) through threads.
2. The exercise cycle of claim 1 wherein: A sliding groove (19) is arranged on the side wall of the protective sleeve (7). A sliding block (20) is slidably arranged in the sliding groove (19). The inner wall of the moving sleeve (10) is fixedly connected with the outside of the adjusting block (11) through the sliding block (20).
3. An exercise cycle as claimed in claim 2, characterised in that: The end of the clamping frame (14) and one side wall of the clamping groove (15) are both treated with a round corner structure.
4. The exercise cycle of claim 1 wherein: The end of the locking rod (17) and the edge of the inner wall of the locking groove (16) are both designed with a round corner.
5. An exercise cycle as claimed in claim 4, characterised in that: A connecting spring (21) is arranged on the outside of the control sleeve (6). The outer end of the locking rod (17) is connected with the outer wall of the control sleeve (6) through the connecting spring (21).
6. An exercise cycle as claimed in any one of claims 1 to 5, characterised in that: The adjusting device comprises a screw rod (22), a screw sleeve (23), a mounting frame (24), a magnetic block (25) and an elastic plate (26). The screw rod (22) is movably connected with the screw sleeve (23) through threads. The screw sleeve (23) is fixedly installed on the frame (1). The mounting frame (24) is detachably installed on one side of the frame (1). One end of the elastic plate (26) is rotatably connected with the screw rod (22). The other end of the elastic plate (26) is detachably connected with the inner wall of the mounting frame (24). The magnetic block (25) is installed on the lower side of the elastic plate (26). The driven wheel (2) is made of magnetic material.
7. An exercise cycle as claimed in claim 6, characterised in that: An adjusting sleeve (27) is connected with the top end of the screw rod (22).
8. An exercise cycle as claimed in claim 7, characterised in that: A saddle (28) is detachably arranged on the frame (1). Foot pedals (29) are connected on both sides of the driving wheel (3).