Lower limb training instrument with elliptical path

Abstract

The embodiment of the utility model discloses a lower limb training instrument with an elliptical path, the lower limb training instrument with the elliptical path comprises a rack, a handrail, a crank rocker assembly and a damping connecting rod, the handrail is rotatably connected to the rack at a first hinge point; the crank rocker assembly is rotationally connected to the rack, the crank rocker assembly comprises a crank, a swing part and a pedal connecting rod, and the swing part is rotationally connected to the rack at a second hinge point; one end of the damping connecting rod is rotationally connected to the handrail at a third hinge point, the opposite other end of the damping connecting rod is rotationally connected to the swing part at a fourth hinge point, and the first hinge point, the second hinge point, the third hinge point and the fourth hinge point are arranged at intervals; on the handrail, the parts of the first hinge point and the third hinge point are first swinging sections; on the swinging piece, the part from the second hinge point to the fourth hinge point is a second swinging section; the swinging directions of the first swinging section and the second swinging section are the same, and the length of the first swinging section is larger than that of the second swinging section, so that the swinging amplitude of the handrail is smaller than that of the swinging piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of body-building training equipment, in particular to a lower limb training device with an elliptical path. BACKGROUND

[0002] The lower limb training device with an elliptical path is an indoor body-building device for heart-lung endurance training. During use, the exerciser holds the handrails above the device with both hands, and pedals with both feet while swinging the arms with the handrails. The overall movement trajectory of the feet is elliptical.

[0003] In the prior art, the lower limb training device with an elliptical path generally comprises a handrail and a crank rocker assembly, the crank rocker assembly comprising a rocker, a connecting rod and a crank, the crank being rotatably connected to the connecting rod, and a foot pedal assembly being connected to the connecting rod and driving the rocker to swing, so that the stride of the foot pedal assembly is consistent with the swing of the rocker. However, the handrail is usually directly connected to the rocker, so that the swing range of the handrail is consistent with the swing range of the rocker. Therefore, when the stride is large, the swing range of the handrail will also increase, which causes the swing range of the arms of the exerciser to be too large during the movement, affecting the comfort and experience of the movement.

[0004] The above description is only used to assist in understanding the technical solutions of the utility model and does not mean that the above description is prior art. CONTENT OF THE UTILITY MODEL

[0005] In view of the above problems, the utility model provides a lower limb training device with an elliptical path, aiming at solving the problem of the swing range of the handrail of the conventional lower limb training device with an elliptical path being too large.

[0006] To achieve the above-mentioned purpose, the lower limb training device with an elliptical path provided by the utility model comprises a frame, a handrail, a crank rocker assembly and an amplitude-reducing connecting rod, wherein,

[0007] The handrail is rotatably connected to the frame at a first hinge point;

[0008] The crank rocker assembly is rotatably connected to the frame, the crank rocker assembly comprising a crank, a rocker and a foot pedal connecting rod, the rocker being rotatably connected to the frame at a second hinge point, opposite ends of the foot pedal connecting rod being rotatably connected to the crank and the rocker respectively, a foot pedal module being connected to the foot pedal connecting rod and being drivingly connected to the rocker or the crank;

[0009] One end of the amplitude-reducing connecting rod is rotatably connected to the handrail at a third hinge point, and the opposite end is rotatably connected to the rocker at a fourth hinge point, the first hinge point, the second hinge point, the third hinge point and the fourth hinge point being spaced apart;

[0010] The first swing section and the second swing section have the same swing direction, and the length of the first swing section is greater than the length of the second swing section, so that the swing range of the handrail is smaller than the swing range of the rocking piece.

[0011] In an embodiment, the length ratio of the first swing section to the second swing section is greater than or equal to 1.5 and less than or equal to 3.5.

[0012] In an embodiment, on the handrail, the third hinge point is located above the first hinge point and the foot pedal module;

[0013] On the rocking piece, the fourth hinge point is located above the second hinge point and the foot pedal module.

[0014] In an embodiment, the frame has a vertical rod and a connecting portion, the vertical rod is located at the front side of the frame, and the second hinge point is arranged on the vertical rod;

[0015] The connecting portion is located at the rear side of the vertical rod, and the first hinge point is arranged on the connecting portion.

[0016] In an embodiment, on the handrail, the third hinge point is arranged above the first hinge point;

[0017] On the rocking piece, the fourth hinge point is located above the second hinge point;

[0018] The first hinge point is located at the front side of the second hinge point.

[0019] In an embodiment, the third hinge point is located below the first hinge point, and the fourth hinge point is located below the second hinge point;

[0020] The frame has a vertical rod and a protruding portion, the protruding portion is protruded from the top side of the vertical rod away from the foot pedal module, the first hinge point is arranged on the protruding portion, and the second hinge point is arranged on the vertical rod.

[0021] In an embodiment, the first hinge point and the second hinge point are arranged in a vertical direction, and the second hinge point is located in the projection range of the first swing section on the rocking piece.

[0022] In an embodiment, the frame has a vertical rod, the first hinge point and the second hinge point are both arranged on the vertical rod, and the first hinge point is located above the second hinge point;

[0023] The handrail further comprises a handle section for holding by a hand, the handle section is connected with the first swing section and is arranged at an angle, and the third hinge point is arranged at one end of the first swing section away from the handle section.

[0024] The rocker further comprises a connecting section for connecting the foot pedal connecting rod, the connecting section is connected with the second swing section and is arranged at an angle, and the fourth hinge point is arranged at one end of the second swing section away from the connecting section.

[0025] The first swing section and the second swing section have the same extension direction.

[0026] In an embodiment, the first swing section and the second swing section both extend towards one side of the stand away from the foot pedal module, and the amplitude-reducing connecting rod is arranged on the front side of the stand.

[0027] In an embodiment, the crank rocker assembly further comprises an adjusting rod, one end of the adjusting rod is hingedly connected to the rocker, and the opposite end is fixedly connected to the foot pedal module, so that part of the foot pedal module is arranged beyond the foot pedal connecting rod when the rocker swings back to the limit position.

[0028] The lower limb training device with an elliptical path has the relative two ends of the amplitude-reducing connecting rod rotatably connected to the first swing section of the handrail and the second swing section of the rocker, so that the handrail and the rocker are not directly connected, and the movement ratio between the handrail and the rocker can be flexibly adjusted. The first swing section and the second swing section have the same swing direction, so that the swing directions of the handrail and the rocker are opposite, to avoid the user from having the same hand and foot.

[0029] Secondly, the length of the first swing section is greater than the length of the second swing section, so as to reduce the swing amplitude of the handrail. In this process, the amplitude-reducing connecting rod plays a role similar to a lever, the handrail and the rocker are connected through the amplitude-reducing connecting rod, and the length difference between the first swing section and the second swing section determines the swing amplitude of the handrail. That is, the lever principle is used to reduce the swing amplitude of the handrail in the utility model. When a force acts on a certain point, the effect of the force is proportional to the length of the force arm. In simple terms, the longer the length of the force arm, the smaller the rotation amplitude; and the shorter the length of the force arm, the greater the rotation amplitude. Therefore, the length of the first swing section is greater than the length of the second swing section in the utility model, so that the swing amplitude of the handrail is smaller than the swing amplitude of the rocker. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0031] Figure 1 The structure schematic diagram of the first embodiment of the lower limb training instrument with an elliptical path is shown.

[0032] Figure 2 The movement schematic diagram of the first embodiment of the lower limb training instrument with an elliptical path is shown.

[0033] Figure 3 The another movement schematic diagram of the first embodiment of the lower limb training instrument with an elliptical path is shown.

[0034] Figure 4 The structure schematic diagram of the second embodiment of the lower limb training instrument with an elliptical path is shown.

[0035] Figure 5 The another angle schematic diagram of the second embodiment is shown.

[0036] Figure 6 The still another angle schematic diagram of the second embodiment is shown.

[0037] Figure 7 The structure schematic diagram of the third embodiment of the lower limb training instrument with an elliptical path is shown.

[0038] Figure 8 The movement schematic diagram of the third embodiment of the lower limb training instrument with an elliptical path is shown.

[0039] Figure 9 The another movement schematic diagram of the third embodiment of the lower limb training instrument with an elliptical path is shown.

[0040] Figure 10 The structure schematic diagram of the fourth embodiment of the lower limb training instrument with an elliptical path is shown.

[0041] Figure 11 The movement schematic diagram of the fourth embodiment of the lower limb training instrument with an elliptical path is shown.

[0042] Figure 12 The another movement schematic diagram of the fourth embodiment of the lower limb training instrument with an elliptical path is shown.

[0043]

[0044]

[0045] The purposes, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with 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 that the combination of technical solutions can be realized by those skilled in the art, and when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the utility model.

[0047] It should be noted that if the embodiments of the utility model have involved directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0048] In addition, if the embodiments of the utility model have involved the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. 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 meet at the same time.

[0049] The utility model provides a kind of lower limb training instrument 100 with elliptical path.

[0050] In the embodiments of the utility model, please refer to Figures 1 to 9The lower limb training device with elliptical path 100 comprises a frame 10, a handrail 20, a crank 31 rocker assembly 30 and a reduction link 40, wherein the handrail 20 is rotatably connected to the frame 10 at a first hinge point 51; the crank 31 rocker assembly 30 is rotatably connected to the frame 10, and comprises a crank 31, a rocker 32 and a pedal link 33, the rocker 32 is rotatably connected to the frame 10 at a second hinge point 52, the opposite ends of the pedal link 33 are rotatably connected to the crank 31 and the rocker 32 respectively, a pedal module 60 is connected to the pedal link 33 and is drivingly connected to the rocker 32 or the crank 31; one end of the reduction link 40 is rotatably connected to the handrail 20 at a third hinge point 53, and the opposite end is rotatably connected to the rocker 32 at a fourth hinge point 54, the first hinge point 51, the second hinge point 52, the third hinge point 53 and the fourth hinge point 54 are all arranged at intervals; on the handrail 20, the first hinge point 51 and the third hinge point 53 are part of a first swing section 21; on the rocker 32, the second hinge point 52 to the fourth hinge point 54 is part of a second swing section 322; the swing directions of the first swing section 21 and the second swing section 322 are the same, and the length of the first swing section 21 is greater than the length of the second swing section 322, so that the swing amplitude of the handrail 20 is smaller than the swing amplitude of the rocker 32.

[0051] In the embodiment, the frame 10 is the main frame of the lower limb training device with elliptical path 100, used for supporting and fixing various components such as the handrail 20, the crank 31 rocker assembly 30, the pedal assembly, the flywheel, etc. The frame 10 can be made of metal materials such as steel or aluminum alloy, so as to have sufficient strength and stability. The shape of the frame 10 can be an I-shaped structure, or other shapes, which are not limited herein.

[0052] The handrail 20 is used to be held by the user during exercise, and plays a role in supporting the user and driving the user's arm movement. The handrail 20 can be made of plastic, rubber or metal materials. The handrail 20 can comprise a first swing section 21 and a handle section 22 connected to each other, the first swing section 21 is part of the first hinge point 51 to the third hinge point 53, used for being hinged with the reduction link 40 and controlling the swing amplitude of the handrail 20; the handle section 22 is connected with the first swing section 21 at the first hinge point 51, and is used for being held by the user's hand, the first swing section 21 and the handle section 22 can be arranged in a straight line, or at an angle, which are not limited herein.

[0053] The crank 31 rocker assembly 30 comprises a rocker 32, a crank 31 and a foot connecting rod 33. The rocker 32 can be a rod structure or a disc structure, as long as it can be rotationally connected to the frame. In order to reduce the weight and simplify the structure, and at the same time reduce the occupied space of the lower limb training equipment 100 with an elliptical path, the rocker 32 adopts a rod structure. For the convenience of understanding, the rocker 32 is exemplarily described as a rod structure in the following. One end of the rocker 32 is hinged to the frame at a second hinge point 52 to realize the rotational connection of the rocker 32 to the frame 10. The rocker 32 can comprise a second swing segment 322 and a connecting segment 323 connected to each other. The second swing segment 322 is from the second hinge point 52 to a third hinge point 53, used for being hinged to the amplitude reduction connecting rod 40 and controlling the swing amplitude of the handrail 20; and the connecting segment 323 is used for being hinged to the foot connecting rod 33. The second swing segment 322 and the connecting segment 323 can be arranged in a straight line or at an angle, which is not limited herein.

[0054] The amplitude reduction connecting rod 40 is used for transmission connection between the handrail 20 and the crank 31 rocker assembly 30, and power is transmitted from the crank 31 rocker assembly 30 to the handrail 20 through the amplitude reduction connecting rod 40. The amplitude reduction connecting rod 40 can be a rod structure, and its shape and length are not limited herein, as long as it can be rotationally connected to the handrail 20 and the rocker 32.

[0055] The foot module 60 is used for providing stable support for the user's feet, and when the user steps on the foot module 60, the foot module 60 can realize power transmission to convert the action into power for the movement of the crank 31 rocker assembly 30. The foot module 60 is reciprocatingly and slidably connected to the foot connecting rod 33, and specifically can comprise a foot and a roller assembly connected to the foot, so that the foot is slidably connected to the foot connecting rod 33 through the roller assembly and makes a circular motion with the crank 31, thereby forming an elliptical movement path. Since the foot is slidably connected to the foot connecting rod 33, the force of the foot is not applied to the rocker 32 to swing it, and therefore an adjusting rod 34 hinged at both ends to the rocker 32 and the foot needs to be arranged. The force of the foot is applied to the adjusting rod 34, the adjusting rod 34 pushes the rocker 32 to swing, and then pushes the handrail 20 to swing, thereby completing the complete movement cooperation. In other embodiments, the foot module 60 can be fixedly connected to the foot connecting rod 33, the foot connecting rod 33 is hinged to the rocker 32, and the foot is transmissionally connected to the crank 31 through the foot connecting rod 33. Specifically, the foot connecting rod 33 is reciprocatingly and slidably connected to the crank 31, so that the foot connecting rod 33 makes a reciprocating motion while making a circular motion with the crank 31, thereby forming an elliptical movement path, and then the foot module 60 forms an elliptical movement path.

[0056] The utility model discloses a relative both ends of amplitude reduction connecting rod 40 are rotatively connected in the first swing section 21 of handrail 20 and the second swing section 322 of swing piece 32 respectively, so that handrail 20 and swing piece 32 are not directly connected, thereby the movement ratio between handrail 20 and swing piece 32 can be adjusted flexibly.

[0057] Secondly, by setting the length of the first swing section 21 is greater than the length of the second swing section 322, so as to reduce the swing of handrail 20. In this process, the amplitude reduction connecting rod 40 plays a similar role to a lever, and the handrail 20 and the swing piece 32 are connected through the amplitude reduction connecting rod 40, and the length difference between the first swing section 21 and the second swing section 322 determines the swing amplitude of the handrail 20. That is, the utility model reduces the swing amplitude of the handrail 20 by the lever principle. When a force acts on a certain point, the effect of the force is proportional to the length of the force arm. In simple terms, the longer the length of the force arm, the smaller the rotation amplitude; and the shorter the length of the force arm, the greater the rotation amplitude. Therefore, the length of the first swing section 21 of the lower limb training device 100 with an elliptical path in the utility model is greater than the length of the second swing section 322, so that the swing amplitude of the handrail 20 is smaller than the swing amplitude of the swing piece 32.

[0058] In an embodiment, the length ratio of the first swing section 21 to the second swing section 322 is greater than or equal to 1.5 and less than or equal to 3.5.

[0059] In the embodiment, the length of the first swing section 21 is 2-3 times the length of the second swing section 322, and can be 1.5, 2, 2.2, 2.4, 2.5, 2.6, 2.8, 3 or 3.5. The length ratio of the two is within this range, which can reduce the swing amplitude of the handrail 20 and the swing range of the handrail 20 is within the comfortable swing range of the user. If the length ratio of the first swing section 21 to the second swing section 322 is too large, i.e. the length of the first swing section 21 is much greater than the length of the second swing section 322, the swing amplitude of the handrail 20 will be too small, which cannot effectively cooperate with the user's arm movement, thereby reducing the user's exercise experience. If the length ratio of the first swing section 21 to the second swing section 322 is too small, i.e. the length difference between the first swing section 21 and the second swing section 322 is small, the swing amplitude of the handrail 20 will tend to the swing amplitude of the swing piece 32, thereby the arm swing range of the user is large, which reduces the user's exercise experience.

[0060] Reference Figures 1 to 3 In the first embodiment, on the handrail 20, the third hinge point 53 is located above the first hinge point 51 and the foot pedal module 60; on the swing piece 32, the fourth hinge point 54 is located above the second hinge point 52 and the foot pedal module 60.

[0061] In the embodiment, the first hinge point 51 can be in front of the second hinge point 52 or behind the second hinge point 52, which is not limited herein. The first hinge point 51 is above the footrest module 60, and the third hinge point 53 is above the first hinge point 51, so as to prevent the third hinge point 53 from interfering with the footrest module 60 and causing the user's foot to hit the third hinge point 53. Since the swinging directions of the first swinging section 21 and the second swinging section 322 need to be the same so that the swinging directions of the armrest 20 and the swing 32 are opposite, the third hinge point 53 and the fourth hinge point 54 need to be on the same side to achieve the same swinging directions of the first swinging section 21 and the second swinging section 322. Therefore, the second hinge point 52 is above the footrest module 60, and the fourth hinge point 54 is above the second hinge point 52.

[0062] Further, the frame 10 has a vertical rod 11 and a connecting portion 12. The vertical rod 11 is located at the front side of the frame 10, and the second hinge point 52 is arranged on the vertical rod 11. The connecting portion 12 is located at the rear side of the vertical rod 11, and the first hinge point 51 is arranged on the connecting portion 12.

[0063] In the embodiment, the vertical rod 11 is a rod-shaped structure, and the connecting portion 12 can be a protruding block. The vertical rod 11 is arranged in rotational connection with the swing 32, and the connecting portion 12 is arranged in rotational connection with the armrest 20. The connecting portion 12 is located at the rear side of the vertical rod 11, so that the front side of the vertical rod 11 is free of protruding components, thereby preventing the user from hitting the protruding components when passing by the lower limb training equipment 100 with an elliptical path and causing injury. Meanwhile, the length of the lower limb training equipment 100 with an elliptical path in the front-rear direction can be reduced, thereby reducing the volume of the lower limb training equipment 100 with an elliptical path.

[0064] Referring to Figures 4 to 6 In the second embodiment, on the armrest 20, the third hinge point 53 is arranged above the first hinge point 51; on the swing 32, the fourth hinge point 54 is arranged above the second hinge point 52; and the first hinge point 51 is arranged at the front side of the second hinge point 52.

[0065] In the embodiment, the third hinge point 53 is above the first hinge point 51. In order to make the swinging directions of the first swinging section 21 and the second swinging section 322 the same, the fourth hinge point 54 and the third hinge point 53 need to be on the same side, and therefore, the fourth hinge point 54 is also above the second hinge point 52. In the embodiment, the first hinge point 51 is arranged at the front side of the second hinge point 52, so as to prevent the footrest module 60 from interfering with the first hinge point 51 and prevent the user's leg from hitting the first hinge point 51.

[0066] Referring to Figures 7 to 9In the third embodiment, the third hinge point 53 is located below the first hinge point 51, and the fourth hinge point 54 is located below the second hinge point 52; the frame 10 has the upright post 11 and the protrusion 13, the protrusion 13 is protruded from the top of the upright post 11 and away from the side of the pedal module 60, the first hinge point 51 is arranged on the protrusion 13, and the second hinge point 52 is arranged on the upright post 11.

[0067] In the third embodiment, the third hinge point 53 is located below the first hinge point 51, and the fourth hinge point 54 is located below the second hinge point 52; the frame 10 has the upright post 11 and the protrusion 13, the protrusion 13 is protruded from the top of the upright post 11 and away from the side of the pedal module 60, the first hinge point 51 is arranged on the protrusion 13, and the second hinge point 52 is arranged on the upright post 11.

[0068] In the first, second and third embodiments, the first hinge point 51 and the second hinge point 52 are arranged in the up-down direction, and the second hinge point 52 is located in the projection range of the first swing section 21 on the rocker 32. In other words, the second hinge point 52 is not arranged beyond the projection range of the first swing section 21 on the rocker 32, so that the distance between the third hinge point 53 and the fourth hinge point 54 is small, so that the length of the reduction link 40 can be set to be small, which is beneficial to realize a compact structure and can save the cost of each part. For example, if the second hinge point 52 is arranged beyond the projection range of the first swing section 21 on the rocker 32, that is, the height difference between the second hinge point 52 and the first hinge point 51 increases, the height difference between the fourth hinge point 54 and the third hinge point 53 increases, and the distance between the third hinge point 53 and the fourth hinge point 54 increases, so that the length of the reduction link 40 is longer, which is not conducive to the compact arrangement of the lower limb training instrument 100 with an elliptical path.

[0069] Referring to Figures 10 to 12In the fourth embodiment, the stand 10 has a vertical rod 11, the first and second hinge points 51 and 52 are both arranged on the vertical rod 11, and the first hinge point 51 is located above the second hinge point 52; the handrail 20 further comprises a handle section 22 for holding by hands, the handle section 22 is connected with the first swing section 21 and is arranged at an angle, the third hinge point 53 is arranged at one end of the first swing section 21 away from the handle section 22; the swing piece 32 further comprises a connecting section 323 for hingedly connecting the foot pedal connecting rod 33, the connecting section 323 is connected with the second swing section 322 and is arranged at an angle, and the fourth hinge point 54 is arranged at one end of the second swing section 322 away from the connecting section 323; the first swing section 21 and the second swing section 322 have the same extension direction.

[0070] In the embodiment, the first and second hinge points 51 and 52 are both arranged on the vertical rod 11, which means that the stand 10 does not need to be additionally provided with a structure to rotate the swing piece 32 or the handrail 20, so that the parts of the stand 10 are reduced, thereby simplifying the overall structure and making the lower limb training equipment 100 with an elliptical path more compact and stable.

[0071] Since the vertical rod 11 is a vertical rod-shaped structure, the first and second hinge points 51 and 52 are located on the same straight line, which means that the movement of the handrail 20 and the swing piece 32 will be limited in position and angle. Therefore, the first and second swing sections 21 and 322 need to be adjusted at an angle accordingly to ensure that the amplitude-reducing connecting rod 40 can drive the first and second swing sections 21 and 322, so that the swing amplitude of the handle section 22 is smaller than that of the connecting section 323. Preferably, the angle between the first swing section 21 and the handle section 22 is a right angle, and the angle between the second swing section 322 and the connecting section 323 is a right angle.

[0072] The extension directions of the first and second swing sections 21 and 322 can extend towards the front side of the vertical rod 11 or extend towards the rear side of the vertical rod 11, as long as the extension directions of the two are the same to avoid the situation that the user has the same hand and foot, which is not limited herein.

[0073] Further, the first and second swing sections 21 and 322 both extend towards the side of the vertical rod 11 away from the foot pedal module 60, so that the amplitude-reducing connecting rod 40 is located on the front side of the vertical rod 11.

[0074] In the embodiment, the first and second swing sections 21 and 322 extend towards the side of the vertical rod 11 away from the foot pedal module 60, so that the amplitude-reducing connecting rod 40 is arranged on the front side of the vertical rod 11. This position avoids the direct contact between the amplitude-reducing connecting rod 40 and the foot pedal module 60 or the leg during operation, especially avoids the interference of the knee during movement.

[0075] If the reduction link 40 is placed in front of the vertical rod 11, the swinging path of the reduction link 40 can be kept away from the foot pedal module 60 and the user's legs and knees, avoiding the possibility of collision between the knees and the reduction link 40.

[0076] Further, the ratio of the height difference between the first and second hinge points 51, 52 to the length of the first swing section 21 is greater than or equal to 2 and less than or equal to 3.5.

[0077] In the present embodiment, the height difference between the first and second hinge points 51, 52 refers to the vertical distance between the first and second hinge points 51, 52. In the structure of the lower limb training device 100 with an elliptical path, the movement of the handrails 20 and the swing pieces 32 is transmitted through the first and second swing sections 21, 322 connected by the reduction link 40, and the swing amplitude between the handrails 20 and the swing pieces 32 not only depends on the length of the swing sections, but also is affected by the positions of the first and second hinge points 51, 52. For example, the height difference between the first and second hinge points 51, 52 affects the angle difference between the movement paths of the handrails 20 and the swing pieces 32, which determines the swing amplitude of the handrails 20. The greater the height difference, the greater the angle difference between the movement paths of the two, i.e., the greater the difference between the movement paths of the handrails 20 and the swing pieces 32, which can make the swing amplitude of the handrails 20 smaller than that of the swing pieces 32.

[0078] In the present embodiment, the ratio of the height difference between the first and second hinge points 51, 52 to the length of the first swing section 21 can be 2, 2.5, 3, or 3.5. Within this range, the swing amplitude of the handrails 20 can be reduced and the swing range of the handrails 20 is within the comfortable swing range of the user. If the ratio is too small, i.e., the distance between the first and second hinge points 51, 52 is too close, the movement paths of the handrails 20 and the swing pieces 32 are relatively close, in which case the movement of the swing pieces 32 directly affects the handrails 20, resulting in a larger swing amplitude of the handrails 20. If the ratio is too large, i.e., the distance between the first and second hinge points 51, 52 is too far, the swing amplitude of the handrails 20 is limited to be too small, which cannot effectively match the user's arm movement, thus reducing the user's exercise experience.

[0079] In an embodiment, the crank 31 rocker assembly 30 further includes an adjusting rod 34, one end of which is hinged to the swing piece 32, and the opposite end is fixedly connected to the foot pedal module 60, so that part of the foot pedal module 60 can be arranged beyond the foot pedal link 33 when the swing piece 32 swings backward to the limit position.

[0080] In the embodiment, one end of the adjusting rod 34 is hinged to the swing 32, and the opposite end is fixedly connected to the foot pedal module 60, so that the adjusting rod 34 can effectively adjust the position of the foot pedal module 60 during movement, and ensure that the foot pedal module 60 is drivingly connected to the swing 32. When the swing 32 rotates to the limit position, the foot pedal module 60 will partially exceed the foot pedal connecting rod 33, which means that the length of the foot pedal connecting rod 33 can be set smaller, so that the foot pedal module 60 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 60 from being separated from the foot pedal connecting rod 33. In this way, the lower limb training instrument 100 with an elliptical path can obtain a larger stride in a compact structure without affecting the movement stability of each component.

[0081] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not drive 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 lower body exerciser having an elliptical path, characterized by, The machine frame, the handrail, the crank rocker assembly and the amplitude-reducing connecting rod, The handrail is rotatably connected to the machine frame at a first hinge point; The crank rocker assembly is rotatably connected to the machine frame, the crank rocker assembly comprises a crank, a rocker and a pedal connecting rod, the rocker is rotatably connected to the machine frame at a second hinge point, opposite ends of the pedal connecting rod are rotatably connected to the crank and the rocker respectively, a pedal module is connected to the pedal connecting rod and is drivingly connected to the rocker or the crank; One end of the amplitude-reducing connecting rod is rotatably connected to the handrail at a third hinge point, and the opposite end is rotatably connected to the rocker at a fourth hinge point, the first hinge point, the second hinge point, the third hinge point and the fourth hinge point are arranged at intervals; On the handrail, the first hinge point and the third hinge point are part of a first swing section; on the rocker, the second hinge point to the fourth hinge point is part of a second swing section; the swing directions of the first swing section and the second swing section are the same, and the length of the first swing section is greater than the length of the second swing section, so that the swing amplitude of the handrail is smaller than the swing amplitude of the rocker.

2. The lower body exerciser with an elliptical path according to claim 1, wherein, The length ratio of the first swing section to the second swing section is greater than or equal to 1.5 and less than or equal to 3.

5.

3. The lower body exerciser with an elliptical path according to claim 1, wherein, On the handrail, the third hinge point is above the first hinge point and the pedal module; On the rocker, the fourth hinge point is above the second hinge point and the pedal module.

4. The lower body exerciser with an elliptical path according to claim 3, wherein, The machine frame has a stand and a connecting part, the stand is located at the front side of the machine frame, and the second hinge point is arranged on the stand; The connecting part is located at the rear side of the stand, and the first hinge point is arranged on the connecting part.

5. The lower body exerciser with an elliptical path according to claim 1, wherein, On the handrail, the third hinge point is above the first hinge point; On the rocker, the fourth hinge point is above the second hinge point; The first hinge point is located at the front side of the second hinge point.

6. The lower body exerciser with an elliptical path according to claim 1, wherein, The third hinge point is below the first hinge point, and the fourth hinge point is below the second hinge point; The machine frame has a stand and a convex part, the convex part is convexly arranged on the top of the stand away from the side of the pedal module, the first hinge point is arranged on the convex part, and the second hinge point is arranged on the stand.

7. A lower body exerciser with an elliptical path according to any one of claims 4 to 6, wherein, The first hinge point and the second hinge point are arranged in the up-down direction, and the second hinge point is located in the projection range of the first swing section on the rocker.

8. The lower body exerciser with elliptical path according to claim 1, wherein, The machine frame has a stand, the first hinge point and the second hinge point are arranged on the stand, and the first hinge point is above the second hinge point; The handrail further comprises a handle section for holding by hands, the handle section is connected to the first swing section and is arranged at an angle, and the third hinge point is arranged at one end of the first swing section away from the handle section; The rocker further comprises a connecting section for hinging the pedal connecting rod, the connecting section is connected to the second swing section and is arranged at an angle, and the fourth hinge point is arranged at one end of the second swing section away from the connecting section; The first swing section and the second swing section have the same extension direction.

9. The lower body exerciser with an elliptical path according to claim 8, wherein, The first swing section and the second swing section both extend to a side of the vertical rod away from the foot pedal module, and the amplitude-reducing connecting rod is located at the front side of the vertical rod.

10. The lower body exerciser with an elliptical path according to claim 1, wherein, The crank rocker assembly further comprises an adjusting rod, one end of the adjusting rod is hinged to the swing piece, and the opposite end is fixedly connected to the foot pedal module, so that part of the foot pedal module is arranged beyond the foot pedal connecting rod when the swing piece swings backward to the limit position.

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