Elliptical machine

Abstract

The elliptical machine provided by the utility model has the functions of adjusting the span and the lifting angle of the pedal so as to improve the functionality and the exercise experience of a user, particularly keeps the stability under high-strength use, and is suitable for long-term use in gymnasiums and families. The elliptical machine comprises a bottom frame unit and a vertical frame unit, the track of a pedal is adjusted through a span adjusting mechanism, and large-span and small-span movement modes are provided; meanwhile, the front-back height difference of the pedal is changed through the pedal lifting angle adjusting mechanism, and movement tracks of different terrains are simulated. In addition, due to the design of the frame body, the capability of keeping the equipment stable in the adjusting process is improved, the transmission belt is prevented from slipping through the pressurizing assembly, and the movement stability is ensured.

Description

Technical Field

[0001] This utility model relates to the field of cardiopulmonary fitness training tools, specifically to an elliptical trainer. Background Technology

[0002] Elliptical trainers are widely used exercise equipment in gyms and homes, effectively simulating movements such as running and hiking. Their elliptical trajectory design reduces impact on joints like the knees. Traditional elliptical trainer designs allow users to adjust stride length, elevation angle, and handrail travel to accommodate different users' heights, body types, and exercise needs. However, while current elliptical trainers offer basic adjustments, they still fall short in terms of stability and flexibility.

[0003] For example, the stride and lift angle adjustments in elliptical trainers often rely on complex mechanical structures, such as multi-stage gear or linkage systems. These systems can cause the mechanism to loosen or wobble during adjustment, especially during high-intensity use, resulting in insufficient equipment stability. Furthermore, the limited range of adjustment for the armrests leads to variations in the exercise experience among different users.

[0004] Therefore, how to provide an elliptical exercise bike that can balance flexibility and stability while offering a better user experience when adjusting stride length, lift angle, and handrail travel is a problem that urgently needs to be solved in current technology. Utility Model Content

[0005] In view of the above, the main purpose of this utility model is to provide an elliptical machine with adjustable stride to improve the functionality of the elliptical machine, improve the overall exercise experience of the user, and maintain stability, especially under high-intensity use, making it more suitable for long-term use in gyms or at home.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is to provide an elliptical machine, which includes:

[0007] A frame structure with a supporting beam at the top;

[0008] A crank mechanism having cranks coaxially pivotally connected to opposite sides of the frame;

[0009] The left and right pedal swing assemblies each have a supporting arm, a front swing arm pivotally connected between the top of the frame and the front end of the supporting arm, a rear swing arm pivotally connected between the crank and the middle section of the supporting arm, and a pedal fixed to the rear end of the supporting arm.

[0010] Left and right stride adjustment mechanisms each have a sliding sleeve pipe member slidingly arranged on the top of the rear swing arm, a positioning member fixed to the rear side of the sliding sleeve pipe member, and a connecting rod having a front end pivotally connected to the front end of the support beam and a rear end pivotally connected to the front side of the sliding sleeve pipe member.

[0011] The rear swing arm and the crank are pivotally connected at a first pivot point, the sliding sleeve pipe member and the connecting rod are pivotally connected at a second pivot point, and the rear swing arm and the support connecting arm are pivotally connected at a third pivot point.

[0012] Another object of the present application is to provide an elliptical machine capable of adjusting the pedal lifting angle, so as to improve the functionality of the elliptical machine, improve the overall exercise experience of the user, and maintain stability under high intensity use, making it more suitable for long-term use in gyms or homes.

[0013] To achieve the above object, the present application provides an elliptical machine, which comprises:

[0014] A frame body having a front column pivotally arranged at the bottom end of the frame body and capable of being pivotally swung at the top end, and a rear column fixedly arranged on the rear side of the front column and on the frame body;

[0015] A crank mechanism having cranks coaxially and pivotally connected to the left and right sides of the rear column;

[0016] Left and right pedal swing assemblies each having a support connecting arm, a front swing arm pivotally connected between the top end of the front column and the front end of the support connecting arm, a rear swing arm pivotally connected to the crank and the middle segment of the support connecting arm, and a pedal fixedly arranged at the rear end of the support connecting arm;

[0017] A pedal lifting angle adjustment mechanism having an outer sleeve pivotally connected to the front column, a screw rod telescopically arranged in the inner part of the outer sleeve, and a driving motor having a front end power connected to the rear end of the screw rod and a rear end pivotally connected to the rear column; thereby, the position of the top end of the front swing arm of the left and right pedal swing assemblies is adjusted by the driving motor adjusting the telescopic screw rod.

[0018] Another object of the present application is to provide an elliptical machine capable of adjusting the stride and the pedal lifting angle simultaneously, so as to improve the functionality of the elliptical machine, improve the overall exercise experience of the user, and maintain stability under high intensity use, making it more suitable for long-term use in gyms or homes.

[0019] To achieve the above object, the present application provides an elliptical machine, which comprises:

[0020] A frame body, having a front column with a bottom end pivotally arranged on the frame body and a top end capable of being pivotally swung, and a rear column located at a rear side of the front column and fixedly arranged on the frame body, a bearing beam being arranged at a top end of the rear column;

[0021] A crank mechanism, having cranks coaxially and pivotally arranged at opposite sides of the rear column;

[0022] Left and right pedal swinging assemblies, each having a bearing connecting arm, a front swinging arm pivotally connected between a top end of the front column and a front end of the bearing connecting arm, a rear swinging arm pivotally connected between the crank and a middle segment of the bearing connecting arm, and a pedal fixedly arranged at a rear end of the bearing connecting arm;

[0023] Left and right stride adjusting mechanisms, each having a sliding sleeve pipe movably arranged at a top of the rear swinging arm, a positioning member fixedly arranged at a rear side of the sliding sleeve pipe, and a connecting rod with a front end pivotally connected to a front end of the bearing beam and a rear end pivotally connected to a front side of the sliding sleeve pipe; a first pivot point is defined at a position where the rear swinging arm is pivotally connected to the crank, a second pivot point is defined at a position where the sliding sleeve pipe is pivotally connected to the connecting rod, and a third pivot point is defined at a position where the rear swinging arm is pivotally connected to the bearing connecting arm; thus, the elliptical machine adjusts a length ratio between a length between the first pivot point and the third pivot point and a length between the second pivot point and the third pivot point through the positioning member;

[0024] A pedal lifting angle adjusting mechanism, having an outer sleeve pipe with a front end pivotally connected to the front column, a screw rod telescopically arranged in the inner part of the outer sleeve pipe, and a driving motor with a front end power connected to a rear end of the screw rod and a rear end pivotally connected to the rear column; thus, the driving motor adjusts the position of the top end of the front swinging arm of the left and right pedal swinging assemblies by adjusting the telescopic extension of the screw rod.

[0025] According to an embodiment of the present application, the elliptical machine further comprises left and right reciprocating connecting assemblies, each of the reciprocating connecting assemblies having opposite two ends, one end of which is pivotally connected to a top end of the rear column of the frame body, and the other end of which is pivotally connected to the rear swinging arm.

[0026] Specifically, the frame body has a base frame unit and a vertical frame unit fixedly arranged on the base frame unit; the vertical frame unit has the left and right side columns, the front column arranged between the left and right side columns, the rear column arranged between the left and right side columns and located at a rear side of the front column, a cross bar fixedly connected to a front side of the rear column and having two ends fixedly connected to the left and right side columns, and the bearing beam arranged at a top end of the rear column; the bottom ends of the left and right side columns, the front column and the rear column are connected to the base frame unit.

[0027] Specifically, each of the reciprocating linkage assemblies has a vertical rod and a horizontal rod; the top end and the bottom end of the vertical rod are respectively pivotally connected between the middle section of the horizontal rod and the front end of the horizontal rod, and the rear end of the horizontal rod is pivotally connected to the top end of the rear swing arm and is located below the crank.

[0028] According to an embodiment of the utility model, the rear swing arm of the pedal swing assembly is provided with a high positioning point and a low positioning point at the top end; the sliding sleeve pipe is fixed to the high positioning point or the low positioning point through the positioning member to adjust the position of the second pivot point, thereby changing the length ratio between the length between the first pivot point and the third pivot point and the length between the second pivot point and the third pivot point, realizing linkage of the pedal swing assembly, and making the pedal move along a small-span trajectory or a large-span trajectory.

[0029] According to an embodiment of the utility model, the sliding sleeve pipe of the span adjustment mechanism is composed of a sleeve pipe and upper and lower sleeve ring buckles; the sliding sleeve pipe is provided with a convex base with a screw hole at the top rear side of the sleeve pipe, and the positioning member is adjustably locked on the sliding sleeve pipe through the convex base; the inner surface of the sleeve pipe and the outer surface of the rear swing arm have an avoidance space for the positioning member to retreat from the high positioning point or the low positioning point to adjust the position of the second pivot point.

[0030] According to an embodiment of the utility model, the front side of the rear swing arm of the pedal swing assembly is provided with a limiting protrusion; a vertical long slot is formed in the front side surface of the sleeve pipe, so that the sliding sleeve pipe is slidably arranged on the top of the rear swing arm. According to an embodiment of the utility model, the pedal lifting angle adjustment mechanism drives the screw rod to retract inside the outer sleeve pipe through the driving motor, so that the front column is rotated to a first angle position away from the rear column, to link the pedal swing assembly and make the pedal move along a front-low and rear-high trajectory, or the pedal lifting angle adjustment mechanism drives the screw rod to extend outside the outer sleeve pipe through the driving motor, so that the front column is rotated to a second angle position away from the rear column, to link the pedal swing assembly and make the pedal move along a front-high and rear-low trajectory.

[0031] According to an embodiment of the utility model, the crank transmission mechanism includes the crank, a transmission wheel set and a flywheel, and the flywheel and the crank are transmissionally connected through the transmission wheel set; the pedal swing assembly drives the crank to rotate to drive the flywheel to rotate, forming the pedaling resistance of the elliptical machine.

[0032] According to an embodiment of the utility model provides, wherein, the frame body has fixedly arranged on the rear column of frame body, the transmission wheel group of crank drive mechanism includes a big pulley, a small pulley and a transmission wheel, the big pulley with the crank is coaxially arranged on the side of rear column, and the big pulley and the small pulley between around a first transmission belt of setting on the same side of rear column, the small pulley with the transmission wheel is coaxially arranged on the opposite sides of rear column, and the transmission wheel with the flywheel between around a second transmission belt, by this, make the pedal swing assembly drive the crank rotation and sequentially drive the big pulley, the small pulley and the transmission wheel, further drive the flywheel rotation.

[0033] According to an embodiment of the utility model provides, wherein, the crank drive mechanism still includes a supercharging assembly, the supercharging assembly includes a lever, a compression spring and a supercharging wheel, the middle part of lever has movable pivot point and is arranged on the upper side of second transmission belt, the top end of compression spring is fixedly connected on the side of rear column, the bottom end is hooked on one end of lever, and the supercharging wheel is pivoted to the other end of lever and is pressed on the second transmission belt, so that the second transmission belt is tightly wrapped around the flywheel.

[0034] According to an embodiment of the utility model provides, wherein, the elliptical machine still includes a vortex current magnetic resistance device between the flywheel and the front side of rear column.

[0035] The utility model discloses a technical scheme, which has the following beneficial effects:

[0036] (1) span adjustment effect: the utility model discloses a span adjustment mechanism, which can simply and effectively adjust the movement track of the pedal, provide two different movement modes of large span and small span. The user can adjust according to personal needs, adapt to different training intensity and target, thereby improving the overall movement experience. The adjustment of span not only increases the multifunctionality of the equipment, but also effectively improves the comfort of different users.

[0037] (2) pedal lifting angle adjustment effect: the pedal lifting angle adjustment mechanism in the utility model can change the height difference of the pedal in front and back through the pedal lifting angle adjustment mechanism. This design can let the user choose different track modes, such as high in front and low in back or low in front and high in back, simulate the movement feeling of different terrains. The addition of this function further improves the flexibility of the elliptical machine, suitable for different movement needs, and maintains the stability of the structure when used at high intensity.

[0038] (3) The synchronous adjustment effect of stride and pedal angle: the mechanism for simultaneously adjusting stride and pedal lifting angle is provided, and the user can complete two adjustments at one time, so that the complexity of equipment operation is greatly simplified. The synchronous adjustment not only improves the convenience of the user, but also ensures the motion stability in any adjustment state, is suitable for high-intensity long-term use in a gym, and can also meet the demand of home use.

[0039] (4) The overall structure of the frame improves the stability effect: the frame design structure of the utility model, through the reasonable arrangement of the chassis unit, the vertical frame unit, the cross rod, and the front column and the rear column, makes the elliptical machine keep the stability of the overall motion when adjusting the stride and the pedal lifting angle. This design ensures that the mechanical structure can effectively bear the weight and motion force of the user under different motion modes of the elliptical machine (such as large stride, high front and low back, etc.), and reduces the shaking or instability in the motion process. The frame design improves the overall rigidity and durability of the elliptical machine, is suitable for high-intensity long-term use, and ensures the running stability of the equipment under different use conditions.

[0040] (5) The pressurizing assembly improves the stability effect: the utility model discloses that the second transmission belt can be tightly sleeved on the flywheel through the pressurizing assembly, which effectively prevents the belt from slipping, and further improves the transmission efficiency and stability. This technical means ensures the stability of the elliptical machine in the high-intensity motion process, and improves the durability and continuous stability of the overall mechanical structure.

[0041] These and other objects, features and advantages of the present utility model will become apparent with reference to the following detailed description and claims, and will be further understood by the practice of the present utility model. These and other objects, features and advantages of the present utility model will become apparent with reference to the following detailed description and claims, and will be further understood by the practice of the present utility model. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is the right rear side appearance schematic diagram of the elliptical machine of the utility model.

[0043] Figure 2 is the left rear side appearance schematic diagram of the elliptical machine of the utility model.

[0044] Figure 3 is the left front side appearance schematic diagram of the elliptical machine of the utility model.

[0045] Figure 4 is the right front side appearance schematic diagram of the elliptical machine of the utility model.

[0046] Figure 5 is the exploded schematic diagram of the stride adjustment mechanism of the elliptical machine of the utility model.

[0047] Figure 6 is the combined sectional view schematic diagram of the stride adjustment mechanism of the elliptical machine of the utility model.

[0048] Figure 7A is the left side appearance schematic view of the elliptical machine pedal along the first track movement of the utility model.

[0049] Figure 7B is the pedal lifting angle adjusting mechanism of the utility model elliptical machine in the contraction state schematic view.

[0050] Figure 8 is the right side appearance schematic view of the utility model elliptical machine. Figure 7A

[0051] Figure 9A is the left side appearance schematic view of the elliptical machine pedal along the second track movement of the utility model.

[0052] Figure 9B is the pedal lifting angle adjusting mechanism of the utility model elliptical machine in the extension state schematic view.

[0053] Figure 10 is the left side appearance schematic view of the elliptical machine pedal along the third track movement of the utility model.

[0054] Figure 11 is the left side appearance schematic view of the elliptical machine pedal along the fourth track movement of the utility model.

[0055] The correspondence between the reference signs and the components is as follows:

[0056] ​10: frame body; 101: base unit; 11: front support rod; 111: diagonal brace; 12: rear support rod; 103: top support leg; 102: vertical frame unit; 13: side column; 131: connecting portion; 132: roller; 14: front column; 15: rear column; 151: suspension rod; 16: cross rod; 17: cantilever arm; 171: tension rod; 18: bearing beam; 19: positioning handle; 20: crank transmission mechanism; 21: crank; 22: transmission wheel set; 221: large pulley; 222: small pulley; 223: first transmission belt; 224: transmission wheel; 225: second transmission belt; 23: flywheel; 24: pressure boosting assembly; 241: lever; 242: compression spring; 243: pressure boosting wheel; 30: pedal swing assembly; 31: load-bearing connecting arm; 32: front swing arm; 33: rear swing arm; 331: high positioning point; 332: low positioning point; 333: limit protrusion; 34: pedal; 40: reciprocating linkage assembly; 41: vertical rod; 42: horizontal rod; 50: swing arm; 51: handle; 60: stride adjustment mechanism; 61: sliding sleeve pipe; 611: sleeve; 612: collar; 613: vertical long slot; 614: avoidance space; 615: convex seat; 62: positioning member; 621: head; 622: screw rod portion; 623: convex needle portion; 63: connecting rod; 70: pedal lifting angle adjustment mechanism; 71: outer sleeve; 72: screw rod; 73: drive motor; 80: control console; 90: eddy current magnetic resistance device; T1: first trajectory; T2: second trajectory; T3: third trajectory; T4: fourth trajectory; L1: high position length; L2: low position length; P1: first pivot point; P2: second pivot point; P3: third pivot point. DETAILED DESCRIPTION

[0057] Detailed embodiments of the present application will be disclosed herein. It should be understood, however, that the disclosed embodiments are merely typical examples of the present application and that the present application can be implemented in various alternative forms. Therefore, the specific structural and functional details disclosed herein are not restrictive, but are merely representative principles of the present application as a basis for the claims.

[0058] For the purpose of understanding the present application, the following will be described in conjunction with the accompanying drawings. Figures 1 to 11 and examples.

[0059] Please refer to Figures 1 to 4 , Figure 7A and Figure 8 , the present application provides an elliptical machine, which mainly comprises a frame body 10 and a crank transmission mechanism 20, a pedal swing assembly 30, a reciprocating linkage assembly 40 and a swing arm 50 arranged thereon, and achieves the effect of adjustable stride and pedal lifting angle by arranging a stride adjustment mechanism 60 and a pedal lifting angle adjustment mechanism 70.

[0060] The frame body 10 comprises a base frame unit 101, a vertical frame unit 102 fixed on the upper side of the base frame unit 101, and four top support legs 103 arranged on the lower side of the base frame unit 101. The base frame unit 101 is shaped as a Y-shaped structure and has a front support rod 11 and left and right rear support rods 12 extending from the front support rod 11; a diagonal support 111 is fixed between the middle section of the front end of the front support rod 11 and the front side of the rear column 15. The vertical frame unit 102 has left and right side columns 13, left and right front columns 14 arranged between the side columns 13, a rear column 15 located on the rear side of the front columns 14, and a horizontal rod 16 shaped as a U-shaped structure with the two ends fixed to the side columns 13 and the middle section fixed to the front side of the rear column 15. The bottom ends of the side columns 13 are connected to form a U-shaped structure with a connecting part 131 fixed to the front end of the front support rod 11 of the base frame unit 101; the front columns 14 are composed of straight rods, the bottom ends of which are pivotally connected to the both sides of the bottom end of the diagonal support 111; the top end of the rear column 15 is provided with a bearing beam 18, and the front side of the rear column 15 is provided with a suspension rod 151 pivotally and fixedly connected to the middle section of the horizontal rod 16.

[0061] In the embodiment of the utility model, the lower sides of the two ends of the connecting part 131 of the side column 13 and the lower sides of the extended ends of the rear support rod 12 are respectively provided with the four top support legs 103 with adjustable height, which are used for adjusting the whole elliptical machine to stand stably on the plane. Preferably, the front lower sides of the two ends of the connecting part 131 are provided with rollers 132, which are used for supporting the whole elliptical machine to move, so as to facilitate the moving of the whole elliptical machine.

[0062] In the embodiment of the utility model, the rear end of the bearing beam 18 is provided with a control table 80 on the upper side, and the rear end of the bearing beam 18 is provided with left and right positioning handles 19 on the opposite sides.

[0063] The crank mechanism 20 is arranged between the front column 14 and the rear column 15. Specifically, the crank transmission mechanism 20 comprises coaxially pivotally connected crankshafts 21 arranged on the left and right sides of the rear column 15, a transmission wheel set 22, and a flywheel 23, the flywheel 23 and the crankshafts 21 are connected through the transmission wheel set 22; the pedal swing assembly 30 drives the crankshafts 21 to rotate to drive the flywheel 23 to rotate, forming the pedaling resistance of the elliptical machine.

[0064] In the embodiment of the utility model, the transmission wheel group 22 includes a large belt pulley 221, a small belt pulley 222 and a transmission wheel 224, the large belt pulley 221 is coaxially arranged with the crank 21 on one side of the rear column 15, and a first transmission belt 223 is sleeved between the large belt pulley 221 and the small belt pulley 222 on the same side of the rear column 15, the small belt pulley 222 is coaxially arranged with the transmission wheel 224 on opposite sides of the rear column 15, and a second transmission belt 225 is sleeved between the transmission wheel 224 and the flywheel 23, thereby the pedal swing assembly 30 drives the crank 21 to rotate, sequentially drives the large belt pulley 221, the small belt pulley 222 and the transmission wheel 224, and further drives the flywheel 23 to rotate.

[0065] As shown in Figure 3 , Figure 7A , the crank transmission mechanism 20 further includes a pressure increasing assembly 24, the pressure increasing assembly 24 includes a lever 241, a compression spring 242 and a pressure increasing wheel 243, the middle part of the lever 241 is movably pivoted on the upper side of the second transmission belt 225, the top end of the compression spring 242 is fixedly connected to the side surface of the rear column 15, the bottom end is hooked to one end of the lever 241, and the pressure increasing wheel 243 is pivoted to the other end of the lever 241 and presses against the second transmission belt 225, so that the second transmission belt 225 is tightly sleeved on the flywheel 23.

[0066] As shown in Figure 1 , Fig. 9, the middle segment of the rear column 15 is provided with left and right suspension beam arms 17 extending upwardly and obliquely, the flywheel 23 is pivoted between the suspension beam arms 17, and the suspension beam arms 17 are connected with left and right tension rods 171 between the rear column 15 to reinforce the structural stability of the suspension beam arms 17, the lever 241 of the pressure increasing assembly 24 is pivoted to the middle segment of the tension rod 171 to form the movable pivot point of the lever 241, thereby when the compression spring 242 pulls one end of the lever 241 upwardly, the pressure increasing wheel 243 arranged at the other end of the lever 241 can press downwardly on the second transmission belt 225, so as to prevent slipping when stepping on, improve transmission efficiency, reduce abnormal wear between the belt and the flywheel, avoid noise caused by belt relaxation, and ensure stable operation of the entire crank transmission mechanism 20.

[0067] Further, the elliptical machine further has an eddy current magnetic resistance device 90, the eddy current magnetic resistance device 90 is arranged between the flywheel 23 and the front side of the rear column 15, so that the user can adjust the rotation resistance of the flywheel 23 of the crank transmission mechanism 20 through the electric control of the control console 80 according to the difficulty of the movement demand.

[0068] The frame 10 is provided with left and right pedal swing assemblies 30. Each of the pedal swing assemblies 30 has a bearing link arm 31, a front swing arm 32 pivoted between the top end of the front column 14 and the front end of the bearing link arm 31, a rear swing arm 33 pivoted at a middle section of the bearing link arm 31 and the crank 21, and a pedal 34 fixed to the rear end of the bearing link arm 31. The rear swing arm 33 is provided with a high positioning point 331 and a low positioning point 332 at the top end.

[0069] The frame 10 is provided with left and right reciprocating linkage assemblies 40. Each of the reciprocating linkage assemblies 40 has a vertical rod 41 and a horizontal rod 42. The top end and the bottom end of the vertical rod 41 are pivoted between the front end of the suspension rod 151 and the front end of the horizontal rod 42, respectively. The rear end of the horizontal rod 42 is pivoted at the top end of the rear swing arm 33 and below the crank 21.

[0070] The frame 10 is provided with left and right swing arms 50. Each of the swing arms 50 is provided with a handle 51 at the top end and is pivoted at a middle section of the vertical rod 41 at the bottom end.

[0071] As shown in Figure 3 and Figure 5 , Figure 6 The frame 10 is provided with left and right stride adjustment mechanisms 60. Each of the stride adjustment mechanisms 60 has a sliding sleeve member 61 slidingly arranged at the top of the rear swing arm 33, a positioning member 62 locked at the rear side of the sliding sleeve member 61, and a connecting rod 63 having a front end pivoted at the front end of the bearing beam 18 and a rear end pivoted at the front side of the sliding sleeve member 61.

[0072] As shown in Figure 3 and Figure 5 , Figure 6 The frame 10 is provided with left and right stride adjustment mechanisms 60. Each of the stride adjustment mechanisms 60 has a sliding sleeve member 61 slidingly arranged at the top of the rear swing arm 33, a positioning member 62 locked at the rear side of the sliding sleeve member 61, and a connecting rod 63 having a front end pivoted at the front end of the bearing beam 18 and a rear end pivoted at the front side of the sliding sleeve member 61. Figure 7A , Figure 8 , Figure 9A , Figure 10 and Figure 11 The first pivot point P1 is defined at the pivot point between the rear swing arm 33 and the crank 21, the second pivot point P2 is defined at the pivot point between the sliding sleeve member 61 and the connecting rod 63, and the third pivot point P3 is defined at the pivot point between the rear swing arm 33 and the bearing link arm 31. Thus, the elliptical machine adjusts the length ratio between the length between the first pivot point P1 and the third pivot point P3 and the length between the second pivot point P2 and the third pivot point P3 by the positioning member 62.

[0073] More specifically, the sliding sleeve pipe 61 is fixed to the high positioning point 331 or the low positioning point 332 by the positioning member 62 to adjust the position of the second pivot point P2, thereby changing the length ratio between the length between the first pivot point P1 and the third pivot point P3 and the length between the second pivot point P2 and the third pivot point P3, to realize the linkage of the pedal swing assembly 30 and the movement of the pedal 34 along a small stride trajectory or a large stride trajectory.

[0074] In the embodiment of the utility model, the sliding sleeve pipe 61 of the stride adjustment mechanism 60 has a sleeve 611 and upper and lower sleeve rings 612 buckle to constitute; the sliding sleeve pipe 61 is equipped with a boss 615 with a screw hole in the top rear side of the sleeve 611; the positioning member 62 is shaped with a head 621 for the operator to operate, a screw rod part 622 in the middle segment and a protruding needle part 623 in the terminal end, and the positioning member 62 is adjustably locked on the sliding sleeve pipe 61 through the screw rod part 622 and the screw thread inside the boss 615 to be locked into the high positioning point 331 or the low positioning point 332 shaped as a hole structure, so that the protruding needle part 623 of the positioning member 62 is correspondingly locked. In addition, the inner surface of the sleeve 611 and the outer surface of the rear swing arm 33 have an avoidance space 614 for the positioning member 62 to move to another position by retreating from the high positioning point 331 or the low positioning point 332.

[0075] In the embodiment of the utility model, the front side of the rear swing arm 33 of the pedal swing assembly 30 is additionally provided with a limiting protruding block 333; a vertical long slot 613 is formed in the front side surface of the sleeve 611, so that the sliding sleeve pipe 61 is slidably arranged on the top of the rear swing arm 33. Specifically, the limiting protruding block 333 can be a bolt head formed by being locked into the rear swing arm 33.

[0076] As shown in Figure 4 , Figure 7A , Figure 7B , Figure 9A and Figure 9B , the frame body 10 is further provided with a pedal lifting angle adjustment mechanism 70. The pedal lifting angle adjustment mechanism 70 has an outer sleeve 71, a screw rod 72 telescopically arranged in the inner part of the outer sleeve 71, and a driving motor 73 connected with the rear end of the screw rod 72; the driving motor 73 is pivotally connected with the part of the rear column 15 close to the bottom end, and the front end of the outer sleeve 71 is pivotally connected between the parts of the straight rod of the front column 14 close to the bottom end; thereby, the position of the top end of the front swing arm 32 of the pedal swing assembly 30 is adjusted by adjusting the telescopic extension of the screw rod 72 through the driving motor 73.

[0077] More specifically, the pedal lift angle adjusting mechanism 70 drives the screw rod 72 to retract inside the outer sleeve 71 by the driving motor 73, so that the front column 14 rotates to a first angular position which is biased to the rear column 15, to drive the pedal swing assembly 30 and make the pedal 34 move along a front-low and rear-high trajectory, or the pedal lift angle adjusting mechanism 70 drives the screw rod 72 to extend outside the outer sleeve 71 by the driving motor 73, so that the front column 14 rotates to a second angular position which is away from the rear column 15, to drive the pedal swing assembly 30 and make the pedal 34 move along a front-high and rear-low trajectory.

[0078] The specific structure embodiments of the elliptical machine of the present application are described above, and the following Figures 1 to 4 The movement modes of the elliptical machine of the present application are described in combination with Figure 7A , Figure 9A , Figure 10 and Figure 11 .

[0079] As described above, the elliptical machine of the present application can form the following four modes by controlling the stride adjusting mechanism 60 and the pedal lift angle adjusting mechanism 70.

[0080] Mode (1): small stride and pedal trajectory with front-low and rear-high. As shown in Figure 7A , the positioning member 62 of the stride adjusting mechanism 60 is positioned at the high positioning point 331, and the vertical distance between the slide sleeve member 61 and the connecting rod 63 pivot joint (second pivot point P2) to the same side rear swing arm 33 and the crank 21 pivot joint (first pivot point P1) is a high position length L1. The screw rod 72 of the pedal lift angle adjusting mechanism 70 is in a retracted state, so that the front column 14 and the rear column 15 are approximately parallel and have a small included angle, so that the pedal 34 moves along a first trajectory T1 with the pedal swing assembly 30, the first trajectory T1 is approximately a front-end downward inclined ellipse, and the first trajectory T1 has a first axis length D1.

[0081] Mode (2): small stride and pedal trajectory with front-high and rear-low. As shown in Figure 9AAt this time, the positioning member 62 of the span adjustment mechanism 60 is positioned at the high positioning point 331. The vertical distance between the pivot point (second pivot point P2) of the sliding sleeve tube 61 and the connecting rod 63 and the pivot point (first pivot point P1) of the rear swing arm 33 and the crank 21 on the same side is the same as the high position length L1 in pattern (1). The screw 72 of the pedal lifting angle adjustment mechanism 70 is in an extended state, so that the front column 14 rotates in a direction away from the rear column 15 with a large included angle, so that the pedal 34 moves along a first trajectory T1 in conjunction with the pedal rocking assembly 30. The first trajectory T1 is generally an ellipse with the front end raised upwards, and the major axis of the first trajectory T1 has a second axial length D2.

[0082] Pattern (3): Large span and pedal trajectory that is lower at the front and higher at the back. For example... Figure 10 At this time, the positioning element 62 of the span adjustment mechanism 60 is positioned at the low positioning point 332. The vertical distance between the pivot point (second pivot point P2) of the sliding sleeve tube 61 and the connecting rod 63 and the pivot point (first pivot point P1) of the rear swing arm 33 and the crank 21 on the same side is a low position length L2, which is less than the high position length L1. The screw 72 of the pedal lifting angle adjustment mechanism 70 is in a retracted state, so that the front column 14 and the rear column 15 are roughly parallel and have a small included angle, so that the pedal 34 moves along a third trajectory T3 in conjunction with the pedal rocking assembly 30. The third trajectory T3 is roughly an ellipse with the front end tilted downward, and the major axis of the third trajectory T3 has a third axial length D3.

[0083] Pattern (4): Large span and pedal trajectory that is higher at the front and lower at the back. For example... Figure 11 At this time, the positioning member 62 of the span adjustment mechanism 60 is positioned at the low positioning point 332. The vertical distance between the pivot point (second pivot point P2) of the sliding sleeve tube 61 and the connecting rod 63 and the pivot point (first pivot point P1) of the rear swing arm 33 and the crank 21 on the same side is the same as the low position length L2 in pattern (3). The screw 72 of the pedal lifting angle adjustment mechanism 70 is in an extended state, so that the front column 14 rotates in a direction away from the rear column 15 with a large included angle, so that the pedal 34 moves along a first trajectory T1 in conjunction with the pedal rocking assembly 30. The first trajectory T1 is generally an ellipse with the front end raised upward. The major axis of the fourth trajectory T4 has a fourth axis length D4.

[0084] In this embodiment of the utility model, in modes (1) to (4), the first trajectory T1, the second trajectory T2, the third trajectory T3, and the fourth trajectory T4 refer to the rearmost movement trajectory of the pedal 34.

[0085] In the embodiment of the utility model, the length of the long axis direction of the first track T1 to the fourth track T4 is sequentially first axis length D1, second axis length D2, third axis length D3, fourth axis length D4 (that is, the first track T1 has the minimum long axis length, and the fourth axis length D4 has the maximum long axis length).

[0086] In the embodiment of the utility model, when the high position length L1 is 17.5 cm, and the low position length L2 is 15 cm, the first axis length D1 can be 52.4 cm, the second axis length D2 can be 54.2 cm, the third axis length D3 can be 59.2 cm, and the fourth axis length D4 can be 61.5 cm.

[0087] In the embodiment of the utility model, in mode (1), the long axis direction of the first track T1 can be inclined downward by 10.1° from the horizontal plane.

[0088] In the embodiment of the utility model, in mode (2), the long axis direction of the second track T2 can be raised upward by 6.6° from the horizontal plane.

[0089] In the embodiment of the utility model, in mode (3), the long axis direction of the third track T3 can be inclined downward by 8.5° from the horizontal plane.

[0090] In the embodiment of the utility model, in mode (4), the long axis direction of the fourth track T4 can be raised upward by 8.7° from the horizontal plane.

[0091] The utility model is described in detail above in combination with the drawings and the embodiments, and those skilled in the art can make various change examples to the utility model according to the above description. Thus, certain details in the embodiments should not constitute the limitation of the utility model, and the protection scope of the utility model should be the range defined by the attached claims.

Claims

1. An elliptical machine characterized by, The elliptical machine comprises: a frame body, a top end of which is provided with a bearing beam; a crank mechanism, which has cranks coaxially pivoted on the left and right sides of the frame body; left and right pedal swing assemblies, each of which has a bearing connecting arm, a front swing arm pivoted between the top end of the frame body and the front end of the bearing connecting arm, a rear swing arm pivoted between the crank and the middle segment of the bearing connecting arm, and a pedal fixed to the rear end of the bearing connecting arm; left and right stride adjusting mechanisms, each of which has a sliding sleeve pipe movably sliding on the top of the rear swing arm, a positioning member fixed to the rear side of the sliding sleeve pipe, and a connecting rod with a front end pivoted to the front end of the bearing beam and a rear end pivoted to the front side of the sliding sleeve pipe; the rear swing arm and the crank are pivoted at a first pivot point, the sliding sleeve pipe and the connecting rod are pivoted at a second pivot point, and the rear swing arm and the bearing connecting arm are pivoted at a third pivot point; thus, the elliptical machine adjusts the length ratio between the length from the first pivot point to the third pivot point and the length from the second pivot point to the third pivot point through the positioning member.

2. An elliptical machine characterized by, The elliptical machine comprises: a frame body, which has a front column with a bottom end pivoted on the frame body and a top end capable of being movably pivoted, and a rear column located on the rear side of the front column and fixedly arranged on the frame body; a crank mechanism, which has cranks coaxially pivoted on the left and right sides of the rear column; left and right pedal swing assemblies, each of which has a bearing connecting arm, a front swing arm pivoted between the top end of the front column and the front end of the bearing connecting arm, a rear swing arm pivoted between the crank and the middle segment of the bearing connecting arm, and a pedal fixed to the rear end of the bearing connecting arm; a pedal lifting angle adjusting mechanism, which has an outer sleeve pipe with a front end pivoted to the front column, a screw rod telescopically arranged in the inner part of the outer sleeve pipe, and a driving motor with a front end power connected to the rear end of the screw rod and a rear end pivoted to the rear column; thus, the driving motor adjusts the position of the top end of the front swing arm of the left and right pedal swing assemblies by adjusting the telescopic extension of the screw rod.

3. An elliptical machine characterized by, The elliptical machine comprises: a frame body, which has a front column with a bottom end pivoted on the frame body and a top end capable of being movably pivoted, and a rear column located on the rear side of the front column and fixedly arranged on the frame body, and the top end of the rear column is provided with a bearing beam; a crank mechanism, which has cranks coaxially pivoted on the left and right sides of the rear column; left and right pedal swing assemblies, each of which has a bearing connecting arm, a front swing arm pivoted between the top end of the front column and the front end of the bearing connecting arm, a rear swing arm pivoted between the crank and the middle segment of the bearing connecting arm, and a pedal fixed to the rear end of the bearing connecting arm; The left and right stride length adjustment mechanisms each have a sliding sleeve pipe member slidingly arranged on the top of the rear swing arm, a positioning member arranged on the rear side of the sliding sleeve pipe member, and a connecting rod having a front end pivotally connected to the front end of the support beam and a rear end pivotally connected to the front side of the sliding sleeve pipe member. The pivot point between the rear swing arm and the crank is defined as a first pivot point, the pivot point between the sliding sleeve pipe member and the connecting rod is defined as a second pivot point, and the pivot point between the rear swing arm and the load-bearing connecting arm is defined as a third pivot point. Thus, the elliptical machine adjusts the length ratio between the length between the first pivot point and the third pivot point and the length between the second pivot point and the third pivot point by the positioning member. The pedal lifting angle adjustment mechanism has a front end of the outer sleeve pipe pivotally connected to the front column, a front end of the screw rod telescopically arranged in the inner part of the outer sleeve pipe, and a driving motor having a front end power connected to the rear end of the screw rod and a rear end pivotally connected to the rear column. Thus, the driving motor adjusts the position of the top end of the front swing arm of the pedal swing assembly by adjusting the telescopic extension of the screw rod.

4. An elliptical machine according to any one of claims 1 to 3, wherein, The elliptical machine further comprises: The left and right reciprocating linkage assemblies each have opposite two ends, one end of which is pivotally connected to the top end of the rear column of the frame body, and the other end is pivotally connected to the rear swing arm.

5. The elliptical machine according to any one of claims 1 to 3, wherein: The frame body has a base frame unit and a vertical frame unit fixedly arranged on the base frame unit. The vertical frame unit has the left and right side columns, a front column arranged between the side columns, a rear column arranged between the side columns and located at the rear side of the front column, a cross bar fixedly connected to the front side of the rear column and having two ends fixedly connected to the side columns, and a support beam arranged at the top end of the rear column. The bottom ends of the left and right side columns, the front column, and the rear column are connected to the base frame unit.

6. The elliptical machine of claim 5, wherein, The elliptical machine further comprises: The left and right reciprocating linkage assemblies each have a vertical rod and a horizontal rod. The top end and the bottom end of the vertical rod are pivotally connected between the middle section of the horizontal rod and the front end of the horizontal rod, respectively. The rear end of the horizontal rod is pivotally connected to the top end of the rear swing arm and located below the crank.

7. The elliptical machine according to claim 1 or 3, wherein: The rear swing arm of the pedal swing assembly is provided with a high positioning point and a low positioning point at the top end thereof. The sliding sleeve pipe member is limited and fixed to the high positioning point or the low positioning point by the positioning member to adjust the position of the second pivot point, thereby changing the length ratio between the length between the first pivot point and the third pivot point and the length between the second pivot point and the third pivot point, and realizing linkage of the pedal swing assembly to make the pedal move along a small stride length track or a large stride length track.

8. The elliptical machine according to claim 7, wherein: The sliding sleeve pipe member of the stride length adjustment mechanism has a sleeve pipe and two sleeve ring buckles arranged on the top end of the sleeve pipe. The sliding sleeve pipe member is provided with a convex seat having a screw hole arranged on the rear side of the top end of the sleeve pipe. The positioning member is adjustably arranged on the sliding sleeve pipe member by the convex seat. There is an avoidance space between the inner surface of the sleeve and the outer surface of the rear swing arm, for the positioning member to retreat from the high positioning point or the low positioning point to adjust the position of the second pivot point.

9. The elliptical machine of claim 8, wherein: The front side of the rear swing arm is provided with a limiting protrusion; the front side surface of the sleeve is provided with a vertical long slot, so that the sliding sleeve member is slidably arranged on the top of the rear swing arm.

10. The elliptical machine of claim 2 or 3, wherein: The pedal lifting angle adjusting mechanism drives the screw rod to retract inside the outer sleeve through the driving motor, so that the front column rotates to a first angle position close to the rear column, to drive the pedal swing assembly and make the pedal move along a front-low and rear-high trajectory, or the pedal lifting angle adjusting mechanism drives the screw rod to extend outside the outer sleeve through the driving motor, so that the front column rotates to a second angle position away from the rear column, to drive the pedal swing assembly and make the pedal move along a front-high and rear-low trajectory.

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