Circulating swing type leg trainer

Abstract

The embodiment of the utility model discloses a circulating swing type leg trainer, the circulating swing type leg trainer comprises a rack, an armrest assembly, a crank rocker assembly and a transmission device, the armrest assembly is rotatably connected to the rack; the crank rocker assembly is rotationally connected to the rack and comprises a swing part, a crank part and a connecting rod, the crank part is rotationally connected to the connecting rod, the connecting rod is hinged to the swing part or the crank part, and the pedal module is connected to the connecting rod and is in transmission connection with the swing part; the transmission device comprises a first transmission wheel, a second transmission wheel and a transmission part, the first transmission wheel is fixedly connected to the handrail assembly, the second transmission wheel is fixedly connected to the swing part, the transmission part is in transmission connection with the first transmission wheel and the second transmission wheel, and the transmission ratio of the second transmission wheel to the first transmission wheel is larger than 1. The swing angle of the armrest assembly is smaller than that of the swing part. Thus, after the swing amplitude of the armrest assembly is properly reduced, the arm movement range of a user becomes more comfortable, and the smoothness and comfort of movement are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of training equipment, in particular to a circular swing type leg training device. BACKGROUND

[0002] The circular swing type leg training device, such as an elliptical machine, is also known as a space walking machine, which is an indoor fitness equipment mainly used for cardiopulmonary fitness training. During exercise, the exerciser holds the handrails above the equipment with both hands, and the feet perform pedaling movements while the hands swing forward and backward, in which process the soles are always attached to the pedals to form an elliptical movement path, thereby reducing the impact on the joints.

[0003] In the prior art, the circular swing type leg training device usually comprises a handrail and a crank rocker assembly, the crank rocker assembly comprising a rocker, a connecting rod and a crank component, the crank component being rotationally connected to the connecting rod, the rocker being hinged to the connecting rod, and a foot pedal assembly being connected to the connecting rod so that the foot pedal assembly can not only make reciprocating motion but also make circular motion with the crank component, thereby realizing elliptical trajectory motion of the foot pedal assembly. However, the handrail is usually directly connected to the rocker, so that the swing amplitude of the handrail is the same as that of the rocker, and thus in the case of a large stride, the arm swing range of the exerciser is large, which affects the exercise experience.

[0004] The above content is only used to assist in understanding the technical scheme of the utility model, and does not represent the acknowledgement of the above content as prior art. CONTENT OF THE UTILITY MODEL

[0005] In view of the above problems, the present utility model provides a circular swing type leg training device, aiming to solve the technical problem that the swing amplitudes of the handrail and the connecting rod of the existing circular swing type leg training device are consistent, affecting the exercise experience of the user.

[0006] To achieve the above purpose, the circular swing type leg training device provided by the present utility model comprises a rack, a handrail assembly, a crank rocker assembly and a transmission device, wherein,

[0007] The handrail assembly is rotationally connected to the rack;

[0008] The crank rocker assembly is rotationally connected to the rack, the crank rocker assembly comprising a swing component, a crank component and a connecting rod, the crank component being rotationally connected to the connecting rod, the connecting rod being hinged to the swing component, a foot pedal module being connected to the connecting rod and being transmissionally connected to the swing component or the crank component;

[0009] The transmission device comprises a first transmission wheel, a second transmission wheel and a transmission member, the first transmission wheel is fixedly connected to the handrail assembly, the second transmission wheel is fixedly connected to the swing member, the transmission member is transmissionally connected to the first transmission wheel and the second transmission wheel, and the transmission ratio of the second transmission wheel to the first transmission wheel is greater than 1, so that the swing angle of the handrail assembly is smaller than the swing angle of the swing member.

[0010] In an embodiment, the diameter of the first transmission wheel is greater than the diameter of the second transmission wheel.

[0011] In an embodiment, the first transmission wheel and the second transmission wheel are gears, and the number of teeth of the first transmission wheel is greater than the number of teeth of the second transmission wheel.

[0012] In an embodiment, the transmission member comprises a first gear, and the first gear is meshingly connected to the first transmission wheel and the second transmission wheel.

[0013] In an embodiment, the transmission member further comprises a second gear, the first gear is meshingly connected to the first transmission wheel, the second gear is meshingly connected to the second transmission wheel, the first gear is fixedly connected to the second gear, and the first gear and the second gear are arranged side by side in the left-right direction.

[0014] In an embodiment, the circular swing type leg trainer comprises two handrail assemblies, two transmission devices and two crank rocker assemblies, and the frame is respectively provided with a handrail assembly, a transmission device and a crank rocker assembly on opposite sides in the left-right direction.

[0015] The transmission device further comprises a first connecting shaft, a second connecting shaft and a third connecting shaft, the first connecting shaft and the second connecting shaft are arranged in the frame in the left-right direction, and the first connecting shaft is respectively connected to a first transmission wheel and a handrail assembly at opposite ends in the left-right direction.

[0016] The second connecting shaft is respectively connected to a second transmission wheel and a crank rocker assembly at opposite ends in the left-right direction.

[0017] The third connecting shaft is rotationally connected to the transmission member at opposite ends in the left-right direction.

[0018] In an embodiment, the transmission member is a belt, and the belt is arranged around the first transmission wheel and the second transmission wheel.

[0019] In an embodiment, the first transmission wheel and the second transmission wheel are respectively provided with a belt groove, and the belt is embedded in the belt groove.

[0020] The bottom wall of the belt groove is provided with a sawtooth, the belt is provided with a rack, and the sawtooth is in meshing connection with the rack.

[0021] In an embodiment, the crank rocker assembly further comprises an adjusting rod, one end of the adjusting rod is hinged to the swing member, and the opposite end is fixedly connected to the foot pedal module, so that the foot pedal module partially exceeds the connecting rod when the swing member swings back to the limit position.

[0022] The utility model discloses a cyclic swing type leg training device sets up transmission between crank rocker assembly and handrail assembly, so that handrail assembly is not directly connected with swing member, thereby the motion ratio between handrail assembly and swing member can be flexibly adjusted.

[0023] Secondly, power is transmitted from the foot pedal module to the crank rocker assembly, and then to the handrail assembly through the transmission device, which means that the second transmission wheel is the driving wheel, the first transmission wheel is the driven wheel, the transmission ratio of the second transmission wheel to the first transmission wheel is greater than 1, which means that the rotation speed of the second transmission wheel is greater than that of the first transmission wheel. Therefore, in the same time, the rotation angle of the first transmission wheel is smaller than that of the second transmission wheel, so as to reduce the swing angle of the handrail assembly, so as to realize that the swing angle of the handrail assembly is smaller than that of the swing member. In this way, the swing amplitude of the handrail assembly is appropriately reduced, and the user's arm movement range becomes more comfortable, especially when the step is larger, the discomfort caused by excessive swing of the arm is avoided, and the smoothness and comfort of the movement are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 The structure schematic diagram of the first embodiment of the utility model discloses a cyclic swing type leg training device is shown;

[0026] Figure 2 For Figure 1 The local enlarged view of A in the middle;

[0027] Figure 3 The structure schematic diagram of the second embodiment of the utility model discloses a cyclic swing type leg training device;

[0028] Figure 4 For Figure 3 The local enlarged view of B in the middle;

[0029] Figure 5An exploded view of a transmission according to a second embodiment;

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] Reference Name Reference Name Reference Name 100 Cycling swing leg trainer 34 Adjusting rod 433 Belt 10 Frame 40 Transmission 434 Rack 20 Handrail assembly 41 First transmission wheel 44 First connecting shaft 30 Crank rocker assembly 42 Second transmission wheel 45 Second connecting shaft 31 Swing member 43 Transmission member 46 Third connecting shaft 32 Crank member 431 First gear 47 Belt groove 33 Linkage 432 Second gear 48 Sawtooth 50 Pedal module

[0032] The purposes, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application. In addition, the technical solutions in each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0034] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0035] In addition, if the present application embodiments involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B schemes.

[0036] The present application provides a kind of cyclic swing type leg training device 100.

[0037] In the embodiments of the present application, please refer to Figures 1 to 5The cyclic swing leg trainer 100 comprises a frame 10, an armrest assembly 20, a crank rocker assembly 30 and a transmission device 40, wherein the armrest assembly 20 is rotationally connected to the frame 10; the crank rocker assembly 30 is rotationally connected to the frame 10, and comprises a swing piece 31, a crank piece 32 and a connecting rod 33, the crank piece 32 is rotationally connected to the connecting rod 33, the connecting rod 33 is hingedly connected to the swing piece 31, a foot pedal module 50 is connected to the connecting rod 33 and is transmissionally connected to the swing piece 31 or the crank piece 32; the transmission device 40 comprises a first transmission wheel 41, a second transmission wheel 42 and a transmission piece 43, the first transmission wheel 41 is fixedly connected to the armrest assembly 20, the second transmission wheel 42 is fixedly connected to the swing piece 31, and the transmission piece 43 is transmissionally connected to the first transmission wheel 41 and the second transmission wheel 42, the transmission ratio of the second transmission wheel 42 to the first transmission wheel 41 is greater than 1, so that the swing angle of the armrest assembly 20 is smaller than the swing angle of the swing piece 31.

[0038] In the embodiment, the frame 10 is the main frame of the cyclic swing leg trainer 100, and is used for supporting and fixing various assemblies, such as the armrest assembly 20, the crank rocker assembly 30, the foot pedal module, the flywheel and the like. The frame 10 can be made of metal material, such as steel or aluminum alloy, so as to have sufficient strength and stability. The frame 10 can have L shape or other shapes, which is not limited herein.

[0039] The armrest assembly 20 is used for being held by a user during exercise, and plays a role of supporting the user and driving the user's arm movement. The armrest assembly 20 can be composed of an armrest and a connecting piece, the armrest can be made of plastic, rubber or metal material, and the connecting piece connects the armrest with the frame 10 and allows the armrest to rotate.

[0040] The crank rocker assembly 30 comprises the swing piece 31, the crank piece 32 and the connecting rod 33, the swing piece 31 and the crank piece 32 can have rod structure or disc structure, as long as they can be rotationally connected to the frame respectively. In order to reduce weight, simplify structure and reduce the occupied space of the cyclic swing leg trainer 100, the swing piece 31 and the crank piece 32 have rod structure. For the convenience of understanding, the swing piece 31 and the crank piece 32 are exemplarily described as rod structure in the following. One end of the swing piece 31 is hingedly connected to the frame, so as to realize the rotationally connecting of the swing piece 31 to the frame 10.

[0041] The pedal module 50 is used to provide stable support for the user's feet, and when the user pedals the pedal module 50, the pedal module 50 can realize power transmission to convert the action into the power of the crank rocker assembly 30 movement. The pedal module 50 is reciprocatingly and slidably connected to the connecting rod 33, and the pedal module 50 can specifically include a pedal and a roller assembly connected to the pedal, so that the pedal is slidably connected to the connecting rod 33 through the roller assembly, and the pedal is slidably connected to the connecting rod 33 through the roller assembly, and the pedal is circularly moved with the crank member 32, thereby forming an elliptical movement path. Since the pedal is slidably connected to the connecting rod 33, the force of the pedal is not applied to the swing member 31 to swing, and therefore a regulating rod 34 hingedly connected to the swing member 31 and the pedal at both ends is needed, the force of the pedal is applied to the regulating rod 34, the regulating rod 34 pushes the swing member 31 to swing, and then pushes the handrail to swing, thereby completing the complete motion cooperation. In other embodiments, the pedal module 50 can be fixedly connected to the connecting rod 33, the connecting rod 33 is hingedly connected to the swing member 31, and the pedal is drivingly connected to the crank member 32 through the connecting rod 33. Specifically, the connecting rod 33 is reciprocatingly and slidably connected to the crank member 32, so that the connecting rod 33 moves reciprocatingly while circularly moving with the crank member 32, thereby forming an elliptical movement path, and then the pedal module 50 forms an elliptical movement path.

[0042] The transmission device 40 is used to connect the handrail assembly 20 and the crank rocker assembly 30, and transmit power from the crank rocker assembly 30 to the handrail through the transmission member 43 and the transmission wheel. The transmission device 40 includes a first transmission wheel 41, a second transmission wheel 42 and a transmission member 43, the first transmission wheel 41 is fixedly connected with the handrail assembly 20, the second transmission wheel 42 is fixedly connected with the swing member 31, and the transmission member 43 connects the first transmission wheel 41 and the second transmission wheel 42 and transmits power. The transmission member 43 can be a gear, a belt 433 or other structure capable of transmitting power, and the first transmission wheel 41 and the second transmission wheel 42 can be gears or rollers, which are not limited here. The diameters of the first transmission wheel 41 and the second transmission wheel 42 can be the same or different, when the diameters are the same, the number of teeth of the first transmission wheel 41 is more than that of the second transmission wheel 42, and when the diameters are different, the diameter of the first transmission wheel 41 should be greater than that of the second transmission wheel 42, so that the number of teeth of the first transmission wheel 41 is more than that of the second transmission wheel 42.

[0043] The utility model discloses a circular swing type leg training device 100 through setting up transmission device 40 between crank rocker assembly 30 and handrail assembly 20, to make handrail assembly 20 with swing member 31 not directly connect, thereby make the movement ratio between handrail assembly 20 and swing member 31 can be flexibly adjusted.

[0044] Secondly, the power is transmitted from the foot pedal module 50 to the crank rocker assembly 30, and then to the handrail assembly 20 through the transmission device 40, which means that the second transmission wheel 42 is the driving wheel and the first transmission wheel 41 is the driven wheel, and the transmission ratio of the second transmission wheel 42 to the first transmission wheel 41 is greater than 1, which means that the rotation speed of the second transmission wheel 42 is greater than that of the first transmission wheel 41. Therefore, in the same time, the rotation angle of the first transmission wheel 41 is smaller than that of the second transmission wheel 42, so as to reduce the swing angle of the handrail assembly 20, so as to realize that the swing angle of the handrail assembly 20 is smaller than that of the swing piece 31. In this way, after the swing range of the handrail assembly 20 is properly reduced, the user's arm movement range becomes more comfortable, especially when the step is large, which avoids the discomfort caused by excessive swing of the arm, and enhances the smoothness and comfort of the movement.

[0045] In an embodiment, the diameter of the first transmission wheel 41 is greater than that of the second transmission wheel 42. In this embodiment, the diameters of the first transmission wheel 41 and the second transmission wheel 42 are adjusted to realize that the transmission ratio of the two is greater than 1. The first transmission wheel 41 and the second transmission wheel 42 can be gears or rollers, which are not limited here. When they are gears, generally, the diameter of the first transmission wheel 41 is greater than that of the second transmission wheel 42, which means that the number of teeth of the first transmission wheel 41 is greater than that of the second transmission wheel 42, and in the same rotation time, the rotation speed of the first transmission wheel 41 is smaller than that of the second transmission wheel 42, so as to realize the effect that the transmission ratio of the second transmission wheel 42 to the first transmission wheel 41 is greater than 1, so that the swing angle of the handrail is smaller than that of the swing piece 31.

[0046] When the first transmission wheel 41 and the second transmission wheel 42 are rollers, the diameter of the first transmission wheel 41 is greater than that of the second transmission wheel 42, which also means that in the same rotation time, the rotation angle of the first transmission wheel 41 is smaller than that of the second transmission wheel 42, so as to make the swing angle of the handrail assembly 20 smaller than that of the swing piece 31.

[0047] Preferably, the diameter ratio of the first transmission wheel 41 to the second transmission wheel 42 is greater than or equal to 1.5 and less than or equal to 5, which can be 1.5, 2, 3, 4, 5 respectively, so as to accurately control the swing range of the handrail assembly 20 and improve the user's movement experience.

[0048] In an embodiment, the first transmission wheel 41 and the second transmission wheel 42 are gears, and the number of teeth of the first transmission wheel 41 is greater than that of the second transmission wheel 42.

[0049] In the embodiments, the first transmission wheel 41 and the second transmission wheel 42 are gears, and the transmission ratio of the two is greater than 1 by adjusting the number of teeth of the first transmission wheel 41 and the second transmission wheel 42. The diameters of the first transmission wheel 41 and the second transmission wheel 42 can be the same or different, as long as the number of teeth of the first transmission wheel 41 is greater than that of the second transmission wheel 42, which is not limited herein. By adjusting the number of teeth of the gears, the number of teeth of the first transmission wheel 41 is greater than that of the second transmission wheel 42, so that the swing amplitude of the handrail assembly 20 can be accurately controlled. More teeth ensure a slower rotation speed, so that the swing angle of the handrail is smaller than the swing angle of the swing piece 31, and the comfort and fluency of the movement process are improved. Secondly, the power is transmitted by gears, which can reduce energy loss and improve the stability of power transmission.

[0050] With reference to Figure 1 and Figure 2 In the first embodiment, the transmission member 43 comprises a first gear 431, which is engaged with the first transmission wheel 41 and the second transmission wheel 42.

[0051] In the embodiments, the transmission member 43, the first transmission wheel 41 and the second transmission wheel 42 are all gears, the first gear 431 is located between the first transmission wheel 41 and the second transmission wheel 42, and the first gear 431 can be arranged side by side with the first transmission wheel 41 and the second transmission wheel 42 in the longitudinal direction or staggered in the longitudinal direction, which is not limited herein. The embodiments ensure stable power transmission by gear engagement, and the transmission ratio is greater than 1, so that the swing angle of the handrail assembly 20 is smaller than the swing angle of the swing piece 31. Secondly, the engagement of the first gear 431 ensures the transmission efficiency and accuracy between the first transmission wheel 41 and the second transmission wheel 42. Gear engagement transmission reduces friction and energy loss, so that the system runs more stably, and the overall stability is improved.

[0052] Further, the transmission member 43 further comprises a second gear 432, the first gear 431 is engaged with the first transmission wheel 41, and the second gear 432 is engaged with the second transmission wheel 42, the first gear 431 is fixedly connected with the second gear 432, and is arranged side by side in the left-right direction.

[0053] In the embodiments, the diameter of the first gear 431 is smaller than that of the second gear 432, the first gear 431 is engaged with the first transmission wheel 41 with a larger diameter, the second gear 432 is engaged with the second transmission wheel 42 with a smaller diameter, and the first gear 431 and the second gear 432 are arranged side by side in the left-right direction, so as to save the longitudinal space and make the structure of the transmission device 40 more compact.

[0054] In an embodiment, the cyclically swinging leg trainer 100 comprises two handrail assemblies 20, two transmission devices and two crank rocker assemblies 30. The frame 10 is provided with a handrail assembly 20, a transmission device and a crank rocker assembly 30 on each of the opposite sides in the left-right direction. The structure of each side ensures the symmetry and movement balance of the cyclically swinging leg trainer 100.

[0055] In the embodiment, the cyclically swinging leg trainer 100 comprises two handrail assemblies 20, two transmission devices and two crank rocker assemblies 30. The frame 10 is provided with a handrail assembly 20, a transmission device and a crank rocker assembly 30 on each of the opposite sides in the left-right direction. The structure of each side ensures the symmetry and movement balance of the cyclically swinging leg trainer 100.

[0056] The layout of the first connecting shaft 44, the second connecting shaft 45 and the third connecting shaft 46 ensures the synchronous movement of the handrail assemblies 20 and the crank rocker assemblies 30 on the left and right sides. The first connecting shaft 44 and the second connecting shaft 45 are connected with the handrail assemblies 20 and the crank rocker assemblies 30 respectively, while the transmission member 43 connected with the third connecting shaft 46 serves as the central pivot to coordinate the movement of the two. In this way, the handrail and foot pedal systems can work in coordination to improve the movement experience of the user.

[0057] Secondly, since the three connecting shafts are arranged in the longitudinal direction, the space layout inside the frame 10 can be effectively optimized, the space occupation inside the system is reduced, and the stability of the system is improved. The staggered arrangement of different connecting shafts ensures that the power transmission during transmission is not disturbed, and mechanical vibration caused by too concentrated space is avoided.

[0058] Referring to Figures 3 to 5 In the second embodiment, the transmission member 43 is a belt 433, which is wound around the first transmission wheel 41 and the second transmission wheel 42.

[0059] In the present embodiment, the transmission member 43 is a belt 433, which is arranged between the first transmission wheel 41 and the second transmission wheel 42. Through the transmission of the belt 433, the first transmission wheel 41 and the second transmission wheel 42 can efficiently transmit power, thereby realizing the coordinated movement between the handrail assembly 20 and the crank rocker assembly 30. Compared with the gear system, the belt 433 transmission system is more convenient in adjustment and maintenance. At the same time, the replacement of the belt 433 is more convenient than the gear, thereby reducing the maintenance cost.

[0060] In an embodiment, the first transmission wheel 41 and the second transmission wheel 42 are each provided with a belt groove 47, the belt 433 is embedded in the belt groove 47, the bottom wall of the belt groove 47 is provided with a sawtooth 48, and the belt 433 is provided with a rack 434, the sawtooth 48 and the rack 434 are in meshing connection. In this way, the belt 433 can be more stably connected with the transmission wheel, avoiding the phenomenon of belt slip, and improving the transmission efficiency and stability. The meshing of the rack 434 and the sawtooth 48 can accurately control the relative movement between the belt 433 and the transmission wheel, ensuring that the transmission ratio always remains stable. Such accurate control ensures the synchronization and coordination in the movement process, avoiding the movement inconvenience caused by unbalanced transmission.

[0061] In an embodiment, the center distance between the first transmission wheel 41 and the second transmission wheel 42 is greater than or equal to 4 cm and less than or equal to 6 cm. Within this range, the compactness of the transmission device 40 can be ensured, and at the same time, appropriate space is provided for the belt 433 or the gear, avoiding the situation of excessive tension or looseness, and ensuring the smooth transmission of power. If the center distance is too large, the belt 433 or other transmission member 43 of the transmission device 40 may become loose, resulting in a decrease in transmission efficiency, and even a slip phenomenon. At the same time, a larger center distance will result in a larger space occupied by the transmission system, making the device volume increase, which is not conducive to the design of a compact structure. If the center distance is too small, when the center distance is too small, the distance between the transmission wheels is too short, which will affect the size setting of the transmission wheel, resulting in a too small diameter of the transmission wheel, thereby unable to effectively transmit the handrail assembly 20.

[0062] In an embodiment, the crank rocker assembly 30 further comprises an adjusting rod 34, one end of the adjusting rod 34 is hinged to the swing member 31, and the opposite end is fixedly connected to the foot pedal module 50, so that when the swing member 31 rotates to the limit position, the foot pedal module 50 partially exceeds the connecting rod 33.

[0063] In the present embodiment, one end of the adjusting rod 34 is hinged to the swing member 31, and the opposite end is fixedly connected to the foot pedal module 50, so that the adjusting rod 34 can effectively adjust the position of the foot pedal module 50 during movement, and ensure the coordinated operation of the foot pedal module 50 with other components. When the swing member 31 is turned to the limit position, the foot pedal module 50 will partially exceed the connecting rod 33, meaning that the length of the connecting rod 33 can be set smaller, so that the foot pedal module 50 can obtain a larger stride in a compact structure. At this time, the adjusting rod 34 plays a limiting role to prevent the foot pedal module 50 from being separated from the connecting rod 33. In this way, the cyclic swing type leg training device 100 can obtain a larger stride in a compact structure without affecting the movement stability of the components.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the technical solutions described in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A cyclic swing-type leg trainer, characterized in that, Includes a frame, armrest assembly, crank-rocker assembly, and transmission mechanism, among which, The handrail assembly is rotatably connected to the frame; The crank-rocker assembly is rotatably connected to the frame. The crank-rocker assembly includes a swing member, a crank member, and a connecting rod. The crank member is rotatably connected to the connecting rod. The connecting rod is hinged to the swing member. The foot pedal module is connected to the connecting rod and is also connected to the swing member or the crank member. The transmission device includes a first transmission wheel, a second transmission wheel, and a transmission component. The first transmission wheel is fixedly connected to the handrail assembly, and the second transmission wheel is fixedly connected to the swing component. The transmission component drives the first transmission wheel and the second transmission wheel. The transmission ratio between the second transmission wheel and the first transmission wheel is greater than 1, so that the swing angle of the handrail assembly is smaller than the swing angle of the swing component.

2. The cyclic swing leg trainer as described in claim 1, characterized in that, The diameter of the first drive wheel is larger than the diameter of the second drive wheel.

3. The cyclic swing leg trainer as described in claim 1, characterized in that, The first transmission wheel and the second transmission wheel are gears, and the number of teeth on the first transmission wheel is greater than the number of teeth on the second transmission wheel.

4. The cyclic swing leg trainer as described in claim 3, characterized in that, The transmission component includes a first gear, which meshes with the first transmission wheel and the second transmission wheel.

5. The cyclic swing leg trainer as described in claim 3, characterized in that, The transmission component includes a first gear and a second gear. The first gear is meshed with the first transmission wheel, and the second gear is meshed with the second transmission wheel. The first gear and the second gear are fixedly connected and arranged side by side in the left-right direction.

6. The cyclic swing leg trainer as described in any one of claims 4 or 5, characterized in that, The cyclic rocking leg trainer includes two armrest assemblies, two transmission devices, and two crank rocker assemblies. The frame is provided with one armrest assembly, one transmission device, and one crank rocker assembly on opposite sides in the left-right direction. The transmission device further includes a first coupling, a second coupling and a third coupling. The first coupling and the second coupling are inserted through the frame along the left and right direction. The first coupling is connected to a first transmission wheel and a handrail assembly at opposite ends in the left and right direction, respectively. The second coupling shaft is connected to a second transmission wheel and a crank-rocker assembly at opposite ends in the left-right direction, respectively. The third connecting shaft is rotatably connected to the transmission component at its opposite ends in the left-right direction.

7. The cyclic swing leg trainer as described in claim 2, characterized in that, The transmission component is a belt, which is wound around the first transmission wheel and the second transmission wheel.

8. The cyclic swing leg trainer as described in claim 7, characterized in that, Both the first drive wheel and the second drive wheel are provided with belt grooves, and the belt is embedded in the belt grooves; The bottom wall of the belt groove is provided with serrations, and the belt is provided with a rack, the serrations being engaged with the rack.

9. The cyclic swing leg trainer as described in claim 1, characterized in that, The crank rocker assembly also includes an adjustment rod, one end of which is hinged to the oscillating member and the other end is fixedly connected to the pedal module, so that when the oscillating member swings backward to its limit position, the pedal module extends beyond the connecting rod.

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