Electric folding treadmill and its usage

Abstract

The electric folding treadmill and its usage method described in this invention propose a miniaturized and automated folding, storage, and mobility solution for treadmills. Through modular design and improvements in motor drive mechanisms, it aims to increase the automation of the folding process, effectively reduce size and weight, and eliminate the need for on-site assembly and debugging upon initial use. The electric folding treadmill includes a first front running platform assembly, a first rear running platform assembly, and an intermediate rotating plate assembly connecting the two. A transmission assembly, disposed on either the first front or rear running platform assembly, drives the first front and rear running platform assemblies to swing and extend to either sides or fold inward around the intermediate rotating plate assembly. A running belt, looped between the first front and rear running platform assemblies in a closed loop, supports and propels the user forward.

Description

Technical Field

[0001] This invention proposes a novel electric folding treadmill and its fully automatic folding method, belonging to the field of medical rehabilitation and fitness. Background Technology

[0002] With rising living standards and the promotion of healthy lifestyles, treadmills are increasingly appearing in commercial, home, and medical rehabilitation fields. Since running on a treadmill is a passive exercise—where the user's feet are moved by the running belt at a set speed and angle—current treadmills are relatively large and require considerable floor space. A common improvement is the adoption of a foldable design.

[0003] Currently, most treadmills use manual folding. Due to their considerable weight, manual folding is time-consuming and laborious, and they are difficult to move after folding, resulting in low consumer satisfaction and a low market share for these types of manually folding treadmills. Treadmills with motor-driven folding are rare in the market. Analysis of their performance reveals significant technical drawbacks, such as the drive and transmission mechanisms occupying a large space, hindering miniaturization and lightweight design. This not only increases usable space but also makes the overall packaging box larger, inconvenient for transportation and reducing shipping costs. Furthermore, the initial unpacking and assembly requires professional on-site work, leading to a poor user experience and higher subsequent maintenance costs.

[0004] With the improvement of living standards and consumption levels, the current market urgently needs an automated folding treadmill that embodies miniaturization and convenience, from the perspective of ease of use and comfortable experience.

[0005] In view of the above, this patent application is hereby filed. Summary of the Invention

[0006] The electric folding treadmill and its usage method described in this application address the problems existing in the prior art by proposing a miniaturized and automated folding, storage, and mobility solution for the treadmill. The aim is to improve the automation of the folding process, effectively reduce the size and weight, and eliminate the need for on-site assembly and debugging upon first use through modular design of the machine body and improvements in the motor drive method.

[0007] To achieve the above-mentioned objective, the electric folding treadmill includes a first front running platform assembly, a first rear running platform assembly, and an intermediate rotating plate assembly connecting the two.

[0008] A transmission component is disposed on the first front running platform assembly or the first rear running platform assembly, and is used to drive the first front running platform assembly and the first rear running platform assembly to swing and extend to both sides or fold and store in the middle with the middle rotating plate assembly as the center.

[0009] The treadmill belt is fitted in a closed loop between the first front treadmill assembly and the first rear treadmill assembly to support and propel the exerciser forward on it.

[0010] The first front running platform assembly has a frame structure, and two sets of first gears are symmetrically arranged on both sides of the frame structure.

[0011] The transmission assembly includes a first sprocket shaft, a second sprocket shaft, and a connecting rod reduction motor. The output end of the connecting rod reduction motor is fitted with a first sprocket. A second sprocket is fitted onto the first sprocket shaft and rotates around its fixed axis. The second sprocket has an axial double sprocket structure design. A third sprocket shaft is located on one side of the frame structure of the first front running platform assembly. A second gear shaft, having an axial gear and sprocket composite structure, is located on the second sprocket shaft and can rotate around its fixed axis. The second gear and the third sprocket are arranged opposite each other. A first chain is looped between one tooth of the first sprocket and one tooth of the second sprocket, and a second chain is looped between the third sprocket and the other tooth of the second sprocket. Driven by the connecting rod reduction motor, the driving force of the connecting rod reduction motor is ultimately transmitted to the third sprocket through the above transmission mechanism.

[0012] The intermediate rotating plate assembly consists of two sets of oppositely arranged end plates and a curved plate connected between the two end plates. The two ends of the second rotating shaft and the fourth rotating shaft are respectively mounted on the two end plates through bearings. The intermediate rotating plate assembly connects the first front running platform assembly and the first rear running platform assembly to form a three-section treadmill structure. Two sets of sixth gears and fifth gears are symmetrically arranged on both sides of the intermediate rotating plate assembly.

[0013] The first rear running platform assembly has two sets of fourth gears symmetrically arranged on its side end adjacent to the middle turn plate assembly.

[0014] The first gear, the sixth gear, the fifth gear, and the fourth gear are sequentially meshed and connected for transmission.

[0015] Furthermore, the intermediate rotating plate assembly has an eighth gear with a gear and sprocket composite structure mounted on the second rotating shaft.

[0016] Furthermore, a connecting rod assembly is connected to the bottom of the first front running platform assembly or the first rear running platform assembly. The connecting rod assembly is composed of a first connecting rod shaft, two sets of symmetrically arranged connecting rod plates, and a second connecting rod shaft spliced ​​together. A third connecting rod shaft is respectively mounted on the same side end of the two sets of connecting rod plates. The connecting rod roller is sleeved on the third connecting rod shaft through a bearing and can rotate around its fixed axis. The seventh gear is sleeved on one side end of the first connecting rod shaft. One end of the first connecting rod shaft is sleeved on the second connecting rod seat and can rotate around its fixed axis. The other end of the first connecting rod shaft is sleeved on the first connecting rod seat and can rotate around its fixed axis. The seventh gear sleeved on the first connecting rod shaft meshes with the gear part of the second gear on the first sprocket plate. The third chain is sleeved in a closed loop between the sprocket part of the second gear and the sprocket part of the eighth gear.

[0017] Furthermore, the first front running platform assembly has a first rotating shaft horizontally mounted in its frame structure. The first rotating shaft rotates around the pivot points at both ends. A handle is fixedly connected to the end of the first rotating shaft. Two sets of eccentric sleeves are fixedly fitted on the outer diameter of the first rotating shaft. Each set of eccentric sleeves is respectively positioned opposite to the front roller located at the end of the frame structure. As the first rotating shaft rotates, the eccentric sleeves and the front rollers are in clearance fit or interference fit.

[0018] Furthermore, the first front running platform assembly has an elastic plate connected to the bottom of its frame structure, the elastic plate having an arc-shaped, elastic end.

[0019] Furthermore, in the intermediate rotating plate assembly, a set of shoulder screws is fixedly connected to the outer side of each set of end plates, and the fifth gear is sleeved on the shoulder screw and can rotate around its fixed axis; a set of bearing sleeves are symmetrically fixed on the two sets of end plates, a set of third bearings is sleeved on each bearing sleeve, the two ends of the third rotating shaft are respectively sleeved on the third bearings, the third gear is fixedly sleeved on the outer diameter of one end of the third rotating shaft, and a set of sixth gears is fixedly connected to the two ends of the third rotating shaft.

[0020] Based on the structural improvements to the aforementioned electric folding treadmill, this application proposes a novel electric folding treadmill. It includes the following usage stages:

[0021] 1) Normal use

[0022] When the electric folding treadmill is in a flat position, the running motor drives the running belt to run in a closed loop between the front and rear running rollers, allowing the exerciser to run and exercise normally on the running belt.

[0023] 2) Folding stage

[0024] A folding command is sent from the outside to the linkage reduction motor, which starts and sequentially drives the first sprocket, the first chain, the second sprocket, the second chain, the third sprocket, the first linkage shaft, and so on up to the seventh gear and the first linkage shaft.

[0025] The driving force is transmitted from the seventh gear to the sixth gear in sequence through the second gear, the third chain, the eighth gear, and the third gear; the first gear and the fourth gear rotate synchronously, and the sixth gear and the fifth gear rotate synchronously; the first front running platform assembly and the first rear running platform assembly swing symmetrically vertically from both sides toward the middle rotating plate assembly;

[0026] On the other hand, the driving force is transmitted to the connecting rod assembly by the seventh gear, and the entire connecting rod assembly rotates in the same direction as the seventh gear.

[0027] The first front running platform assembly and the first rear running platform assembly swing from both sides toward the middle rotating plate assembly until they are vertically parallel to each other. The middle rotating plate assembly remains parallel to the ground throughout the ascent process.

[0028] 3) Stretching stage

[0029] An extension command is sent from the outside to the linkage reduction motor, which sequentially drives the first sprocket, the first chain, the second sprocket, the second chain, the third sprocket, the first connecting rod shaft, and so on up to the seventh gear and the first connecting rod shaft;

[0030] The first front runway assembly and the first rear runway assembly each swing vertically to the sides of the intermediate rotating plate assembly, with the intermediate rotating plate assembly as the center. The first front runway assembly and the first rear runway assembly gradually extend until they are in a horizontal state; the intermediate rotating plate assembly remains parallel to the ground throughout the descent.

[0031] Furthermore, during the aforementioned folding stage, the seventh gear drives the first connecting rod shaft to rotate, and the connecting rod roller contacts the ground and presses downwards against the ground; the connecting rod assembly provides auxiliary upward assistance from one side of the first front running platform assembly to the three-section connecting structure consisting of the first front running platform assembly, the intermediate turntable assembly, and the first rear running platform assembly; when the folding action is completed, the arc-shaped elastic end of the elastic plate is squeezed by the first rear running platform assembly, and under the combined pushing action of the first front running platform assembly and the first rear running platform assembly, the elastic plate stores energy and has a tendency to push away from both sides.

[0032] Another preferred electric folding treadmill mainly has the following structural features:

[0033] It includes a second front running platform assembly, a second rear running platform assembly, and a transmission assembly disposed on the second front running platform assembly or the second rear running platform assembly for driving both to swing and extend to the sides or to fold and store in the middle.

[0034] The treadmill belt is fitted in a closed loop between the second front treadmill assembly and the second rear treadmill assembly to support and propel the exerciser forward on it.

[0035] The front support assembly is used to connect to and support the second front running platform assembly and serves as the base for overall support of the treadmill when folded.

[0036] The transmission assembly includes a linkage reduction motor mounted on the second front running platform assembly. The output end of the linkage reduction motor is fitted with a first sprocket. A second sprocket with an axial double sprocket structure is mounted on one side of the second front running platform assembly. A first chain is looped between one tooth of the first sprocket and the second sprocket, and a second chain is looped between the third sprocket and the other tooth of the second sprocket. Under the drive of the linkage reduction motor, the driving force of the linkage reduction motor is finally transmitted to the third sprocket.

[0037] The second front running platform assembly has a frame structure, with two sets of front rotating plates fixedly connected to both ends of the frame structure. A seventh rotating shaft is horizontally mounted on one end of the front rotating plate, and a ninth gear with a gear and sprocket composite structure is sleeved on the seventh rotating shaft to achieve synchronous fixed-axis rotation of the two.

[0038] The second rear running platform assembly has two sets of rear rotating plates fixedly connected to its two ends respectively. The two sets of rear rotating plates are laterally connected by a rear tie rod. Two sets of eighth bearings are respectively sleeved on the two sets of rear rotating plates. The two ends of the rear gear shaft are fixedly connected to the rear rotating plates, and the tenth gear is fixedly sleeved on the outer diameter of the rear gear shaft.

[0039] The two ends of the seventh rotating shaft are respectively fitted onto the eighth bearing and can rotate around its fixed axis. At the same time, the gear part of the ninth gear meshes with the tenth gear, thereby realizing a two-stage rotating connection between the second front running platform assembly and the second rear running platform assembly.

[0040] Furthermore, two sets of eighth and third gears with a composite structure of gears and sprockets are provided on the inner side shaft of the frame structure of the second front running platform assembly. The gear part of the eighth gear meshes with the third gear; the third chain is closedly sleeved between the sprocket part of the ninth gear and the sprocket part of the eighth gear.

[0041] In summary, the electric folding treadmill and its method of use described in this application have the following advantages:

[0042] 1. The treadmill adopts a segmented modular design, which not only simplifies the installation and connection structure of the machine, but also facilitates the use of miniaturized drive components to achieve folding transmission of the front and rear running platform components. This helps to reduce the size of the machine body, reduce the size of the outer packaging, and reduce transportation costs.

[0043] 2. This application proposes a novel treadmill body structure, which can effectively reduce the difficulty of manufacturing process. The whole machine can be directly delivered to the use site after leaving the factory. No secondary installation and debugging are required on site during the first use, and the subsequent maintenance and repair costs are also lower.

[0044] 3. The electric folding method of this application has a high degree of automation, requiring no manual intervention or assistance. After folding, it is easy to move and store, which is convenient to use and occupies little space, making it easy to meet the needs of different types of consumers.

[0045] 4. This application produces low noise and vibration energy during use, and does not have a significant impact on the surrounding environment. Attached Figure Description

[0046] Figure 1 This is an isometric view of the electric folding treadmill described in Example 1;

[0047] Figure 1-1 yes Figure 1 Enlarged diagram of section A in the middle;

[0048] Figure 2 yes Figure 1 Side view;

[0049] Figure 3 Is it like this? Figure 1 The structure shown is folded to the middle position, viewed from below.

[0050] Figure 3-1 yes Figure 3 Enlarged schematic diagram of section B in the middle;

[0051] Figure 3-2 yes Figure 3 Enlarged diagram of section C;

[0052] Figure 4 Is it like this? Figure 1 The isometric side view of the structure shown folded to a vertical position;

[0053] Figure 4-1 yes Figure 4 Enlarged schematic diagram of section D in the middle;

[0054] Figure 5 This is an isometric side view of the first front runway assembly;

[0055] Figure 5-1 yes Figure 5 Enlarged schematic diagram of section E in the middle;

[0056] Figure 5-2 yes Figure 5 Enlarged schematic diagram of section F in the middle;

[0057] Figure 6 This is the bottom isometric side view of the first front runway assembly;

[0058] Figure 6-1 yes Figure 6 Enlarged schematic diagram of section G in the middle;

[0059] Figure 6-2 yes Figure 6Enlarged schematic diagram of the middle H section;

[0060] Figure 7 This is an isometric side view of the intermediate turntable assembly;

[0061] Figure 7-1 yes Figure 7 Enlarged schematic diagram of the middle J section;

[0062] Figure 7-2 yes Figure 7 Enlarged diagram of section K in the middle;

[0063] Figure 8 This is an isometric side view of the linkage assembly;

[0064] Figure 9 This is an isometric side view of the first rear runway assembly;

[0065] Figure 9-1 yes Figure 9 Enlarged schematic diagram of the middle M section;

[0066] Figure 9-2 yes Figure 9 Enlarged schematic diagram of part N in the middle;

[0067] Figure 10 This is an isometric view of the electric folding treadmill described in Example 2;

[0068] Figure 11 This is an isometric side view of the front bracket assembly;

[0069] Figure 12 This is an isometric side view of the second front runway assembly;

[0070] Figure 12-1 yes Figure 12 Enlarged schematic diagram of the middle L section;

[0071] Figure 12-2 yes Figure 12 Enlarged schematic diagram of the middle O section;

[0072] Figure 12-3 yes Figure 12 Enlarged schematic diagram of the middle P section;

[0073] Figure 13 This is an isometric side view of the second rear runway assembly;

[0074] Figure 13-1 yes Figure 13 Enlarged schematic diagram of the middle Q section;

[0075] Figure 14 Is it like this? Figure 10 The bottom isometric side view of the structure shown when it is folded to the middle position;

[0076] Figure 14-1 yes Figure 14 Enlarged schematic diagram of the middle R section;

[0077] Figure 14-2 yes Figure 14 Enlarged schematic diagram of the S-section. Detailed Implementation

[0078] The present invention will now be described in further detail with reference to the accompanying drawings.

[0079] Example 1, as Figures 1 to 9-2 As shown, a new type of electric folding treadmill mainly includes the following components:

[0080] The first front running platform assembly 100 and the first rear running platform assembly 300 together form the running support and connection part;

[0081] The intermediate turntable assembly 200 is used to connect the first front running platform assembly 100 and the first rear running platform assembly 300, and maintains a horizontal state during the treadmill's folding and horizontal extension.

[0082] A transmission component is disposed on the first front running platform assembly 100 or the first rear running platform assembly 300, and is used to drive the first front running platform assembly 100 and the first rear running platform assembly 300 to swing and extend to both sides or fold and store in the middle with the intermediate rotating plate assembly 200 as the center.

[0083] The linkage assembly 400 is disposed on the first front running platform assembly 100 or the first rear running platform assembly 300, and assists in the folding and storage and horizontal extension of the two under the drive of the transmission assembly.

[0084] The treadmill belt 500 is fitted in a closed loop between the first front treadmill assembly 100 and the first rear treadmill assembly 300 to support and propel the exerciser forward on it.

[0085] The first front running platform assembly 100 is a rectangular frame structure formed by splicing together a first rod 101, a second rod 102, a third rod 103, and a fourth rod 104. Two sets of auxiliary support plates 105 and two sets of front roller brackets 111 are symmetrically connected to one end of the frame structure, and two sets of first gear mounting plates 106 are symmetrically connected to the other end of the frame structure. A front running plate 115 is laid on the top of the frame structure, and an array of buffer pads 113 is provided at the bottom of the frame structure.

[0086] The auxiliary support plate 105 serves to provide vertical support and stability when the treadmill is folded down.

[0087] The two ends of the front roller 134 are axially connected to the front roller bracket 111 through the first pin 133. The front roller 134 can rotate around the first pin 133. When the front roller 134 contacts the ground, it can support the frame structure together with the buffer pad 113, thus playing the role of bearing and shock absorption for the entire treadmill.

[0088] A connecting rod reduction motor base plate 107, a first connecting rod seat 108 (a connecting rod gear shaft 109 is fixed on the first connecting rod seat 108), a second connecting rod seat 110 opposite to the first connecting rod seat 108, a running motor mounting plate 112, a first U-shaped plate 114, and an elastic plate 155 are connected to one side of the above frame structure.

[0089] A first gear 150 is mounted on the first gear mounting plate 106 via a second bearing 151. At the same end of the above frame structure, two sets of first gears 150 are arranged opposite each other.

[0090] The two ends of the first rotating shaft 130 are respectively connected to the first rod 101 and the second rod 102. The first rotating shaft 130 rotates around the two ends of the shaft connection point as the fulcrum.

[0091] A handle 131 is fixedly connected to the end of the first rotating shaft 130. Two sets of eccentric sleeves 135 are fixedly sleeved on the outer diameter of the first rotating shaft 130. Each set of eccentric sleeves 135 is respectively arranged opposite to a set of front rollers 134. As the first rotating shaft 130 rotates, the eccentric sleeves 135 and the front rollers 134 are either clearance-fitted or interference-fitted. When the two are clearance-fitted, the front rollers 134 are not subjected to friction and compression from the eccentric sleeves 135 and maintain a free fixed-axis rotation state. When the two are interference-fitted, the front rollers 134 are subjected to friction and compression from the eccentric sleeves 135 and cannot rotate.

[0092] The elastic plate 155 has an arc-shaped, elastic end. When the treadmill is folded as a whole, the end of the elastic plate 155 simultaneously abuts against the first front running platform assembly 100 and the first rear running platform assembly 300. Under the joint compression of the first front running platform assembly 100 and the first rear running platform assembly 300, the elastic plate 155 stores energy and tends to push the two apart to the sides.

[0093] The two ends of the front running roller core shaft 120 are respectively mounted on the above-mentioned frame structure. One end is fixedly connected to the second rod 102, and the other end is radially fixedly connected to the first U-shaped plate 114 through the first bolt 124. The front running roller 123 is sleeved on the outer diameter of the front running roller core shaft 120 through the first bearing 121. The front running roller 123 rotates around the front running roller core shaft 120 axially. The large pulley 125 is fixedly sleeved on the outside of the front running roller 123.

[0094] A running motor 128 is installed on the running motor mounting plate 112. The output end of the running motor 128 is connected to a small pulley 127. A belt 126 is looped between the small pulley 127 and the large pulley 125 in a closed loop. Driven by the running motor 128, the small pulley 127 and the belt 126 drive the large pulley 125 to rotate on a fixed axis, thereby driving the front running roller 123 to rotate accordingly.

[0095] The transmission assembly includes a connecting rod reducer motor base 141 fixedly connected to the base plate 107 of the connecting rod reducer motor, a first sprocket shaft 149 mounted on the connecting rod reducer motor base 141 via a bearing shaft, a connecting rod reducer motor 140 fixedly connected to the connecting rod reducer motor base 141, the output end of the connecting rod reducer motor 140 passing through the connecting rod reducer motor base 141 and having a first sprocket 142 sleeved thereon, and a second sprocket 144 sleeved on the first sprocket shaft 149 and rotating around its fixed axis, wherein the second sprocket 144 is an axial double sprocket structure design;

[0096] The first sprocket plate 108 is fixedly connected to the second rod 102, the second sprocket shaft 109 is axially mounted on the first sprocket plate 108, the second sprocket plate 110 is fixedly connected to the first rod 101, the third sprocket 152 is axially mounted on the second sprocket plate 110, and the second gear 153, which has an axial gear and sprocket composite structure, is axially mounted on the second sprocket shaft 109 and can rotate around its fixed axis; the second gear 153 and the third sprocket 152 are coaxially arranged opposite each other;

[0097] The first chain 143 is looped between one tooth of the first sprocket 142 and the second sprocket 144, and the second chain 145 is looped between the third sprocket 152 and the other tooth of the second sprocket 144. Driven by the connecting rod reduction motor 140, the driving force of the reduction motor is finally transmitted to the third sprocket 152 through the above-mentioned transmission mechanism.

[0098] The intermediate plate assembly 200 is composed of two sets of oppositely arranged end plates 201 and a curved plate 202 connected between the two end plates 201. An intermediate running plate 204 is connected to the curved plate 202.

[0099] A set of shoulder screws 232 are fixedly connected to the outside of each set of end plates 201. The fifth gear 233 is sleeved on the shoulder screw 232 and can rotate around its fixed axis.

[0100] Two sets of bearing sleeves 203 are symmetrically fixed on the two sets of end plates 201. A set of third bearings 208 is sleeved on each bearing sleeve 203. The two ends of the third shaft 206 are respectively sleeved on the third bearings 208. The third gear 210 is fixedly sleeved on the outer diameter of one end of the third shaft 206. A set of sixth gears 231 are fixedly connected to the two ends of the third shaft 206.

[0101] The second rotating shaft 207, the fourth rotating shaft 205, and the running belt limiting rod 209 are respectively fitted between the two end plates 201;

[0102] The two ends of the second rotating shaft 207 are respectively sleeved on the second bearing 151, and the two ends of the fourth rotating shaft 205 are respectively sleeved on the fourth bearing 313. Thus, the first front running platform assembly 100 and the first rear running platform assembly 300 are connected in series through the intermediate rotating plate assembly 200 to form the three-section treadmill structure of this embodiment.

[0103] The eighth gear 230 has a composite structure of gear and sprocket. The eighth gear 230 is sleeved on the second rotating shaft 207 and can rotate around its fixed axis.

[0104] The first rear running platform assembly 300 is composed of two sets of symmetrically arranged fifth rods 301 and sixth rods 302 spliced ​​together. After the fifth rods 301 and sixth rods 302 are spliced ​​together, the rear running plate 303 is fixedly connected at the top and an array of buffer pads 113 is fixedly connected at the bottom.

[0105] A set of second U-shaped plates 304 are fixedly connected to one side of each of the two sets of fifth rods 301. The rear roller 307 is mounted on the second U-shaped plate 304 through the second pin 306 and can rotate around its fixed axis. A set of second gear mounting plates 305 are fixedly connected to the other side of each of the two sets of fifth rods 301. The fourth gear 312 is mounted on the second gear mounting plate 305 through the fourth bearing 313.

[0106] The two ends of the rear running roller core shaft 311 are radially fixed between the two sides of the second U-shaped plates 304 by the second bolts 308 respectively. The rear running roller 309 is sleeved on the rear running roller core shaft 311 by the fifth bearing 310 and can rotate around its fixed axis.

[0107] On both sides of the intermediate rotating plate assembly 200, a first gear 150, a sixth gear 231, a fifth gear 233, and a fourth gear 312 are respectively provided for sequential meshing and transmission.

[0108] The connecting rod assembly 400 is composed of a first connecting rod shaft 401, two sets of symmetrically arranged connecting rod plates 402 and a second connecting rod shaft 403 spliced ​​together. A third connecting rod shaft 404 is respectively mounted on the same side end of the two sets of connecting rod plates 402. The connecting rod roller 405 is sleeved on the third connecting rod shaft 404 through a bearing and can rotate around it on a fixed axis. The seventh gear 406 is sleeved on one side end of the first connecting rod shaft 401.

[0109] One end of the first connecting rod shaft 401 is sleeved on the second connecting rod seat 110 and can rotate around its fixed axis. The other end of the first connecting rod shaft 401 is sleeved on the first connecting rod seat 108 and can rotate around its fixed axis. The seventh gear 406 sleeved on the first connecting rod shaft 401 meshes with the gear portion of the second gear 153 on the first sprocket plate 108. The third chain 234 is sleeved in a closed loop between the sprocket portion of the second gear 153 and the sprocket portion of the eighth gear 230.

[0110] The running belt 500 is fitted in a closed loop between the front running roller 123 and the rear running roller 309.

[0111] like Figures 1 to 4-1 As shown, based on the structural features of the electric folding treadmill described above, this embodiment proposes the following method of using the electric folding treadmill:

[0112] 1) Normal use

[0113] exist Figure 1 In the middle, the electric folding treadmill is in a flat state. At this time, the running motor 128 drives the running belt 500 to run in a closed loop between the front running roller 123 and the rear running roller 309. By rotating the first rotating shaft 130 through the handle 131, the eccentric sleeve 135 and the front roller 134 are adjusted to form an interference fit by mutual contact and compression. At this time, the front roller 134 cannot rotate while in contact with the ground, so as to form a brake and keep the electric folding treadmill stationary. At this time, the connecting roller 405 and the rear roller 307 are both in contact with the ground, and the exerciser runs and exercises normally on the running belt 500.

[0114] 2) Folding stage

[0115] A folding command is sent from the outside to the linkage reduction motor 140 (such as using a remote control or triggering a function button on the treadmill control panel; such technology is common knowledge and will not be described in detail here). The linkage reduction motor 140 starts and sequentially drives the first sprocket 142, the first chain 143, the second sprocket 144, the second chain 145, the third sprocket 152, the first linkage shaft 401, and so on up to the seventh gear 406 and the first linkage shaft 401.

[0116] Then, the driving force is transmitted from the seventh gear 406 to the sixth gear 231 via the second gear 153, the third chain 234, the eighth gear 230, and the third gear 210. Since the first gear 150, the sixth gear 231, the fifth gear 233, and the fourth gear 312 are sequentially meshed with each other, the sixth gear 231 ultimately transmits the power to the aforementioned gear meshing assembly, enabling the first gear 150 and the fourth gear 312 to rotate synchronously, i.e., with equal speeds but opposite directions of rotation; similarly, the sixth gear 231 and the fifth gear 233 also maintain a synchronous counter-rotation state.

[0117] Specifically, the second gear 153 and the eighth gear 230 both rotate counterclockwise, and the third gear 210 drives the sixth gear 231 to rotate clockwise. Thus, the first gear 150 rotates counterclockwise, and the fourth gear 312 rotates clockwise, thereby achieving symmetrical vertical rotation of the first front running platform assembly 100 and the first rear running platform assembly 300 from both sides towards the central rotating plate assembly 20. The direction of the rotational torque is as follows: Figure 2 In the X1 direction, it can overcome the "dead point" of tension on the first front running platform assembly 100 and the first rear running platform assembly 300 when the running belt 500 is laid flat and extended to both sides during normal running use.

[0118] On the other hand, the driving force of the aforementioned link reduction motor 140 is transmitted to the link assembly 400 by the seventh gear 406, and the link assembly 400 as a whole rotates in the same direction as the seventh gear 406, such as clockwise.

[0119] Specifically, the seventh gear 406 drives the first connecting rod shaft 401 to rotate clockwise, and the connecting rod roller 405 contacts the ground and presses down on the ground. That is, the connecting rod assembly 400 provides auxiliary upward assistance from the side of the first front running platform assembly 100 to the three-section connecting structure composed of the first front running platform assembly 100, the intermediate turning plate assembly 200 and the first rear running platform assembly 300. While overcoming the mechanical "dead point" problem of folding in the middle, it ensures that the intermediate turning plate assembly 200 remains parallel to the ground during the upward process. When the folding action of the above three-section connecting structure is completed, the arc-shaped elastic end of the elastic plate 155 is squeezed by the first rear running platform assembly 300. Under the joint pushing action of the first front running platform assembly 100 and the first rear running platform assembly 300, the elastic plate 155 stores energy and has a tendency to push away from the two on both sides.

[0120] 3) Stretching stage

[0121] An extension command is sent from the outside to the linkage reduction motor 140, which then starts (operating the opposite action mode to the folding stage described above) to produce the following effect: Figure 4 The motion trend shown in the X2 direction is that the linkage reduction motor 140 sequentially drives the first sprocket 142, the first chain 143, the second sprocket 144, the second chain 145, the third sprocket 152, the first connecting rod shaft 401, and so on up to the seventh gear 406 and the first connecting rod shaft 401.

[0122] The first front running platform assembly 100 and the first rear running platform assembly 300 rotate vertically to both sides of the intermediate rotating plate assembly 20, with the intermediate rotating plate assembly 20 as the center. The first front running platform assembly 100 and the first rear running platform assembly 300 gradually extend until they are in a horizontal state.

[0123] Initially, the front roller 134, the second rotating shaft 207, the fourth rotating shaft 205, and the rear roller 307 form a quadrilateral support and stabilizing structure in the folded state and are in a reverse thrust "dead point" state. When the first front running platform assembly 100 and the first rear running platform assembly 300 extend to both sides respectively, under the action of the reset elastic force, the elastic plate 155 provides auxiliary thrust to push them to both sides, thereby helping to overcome the inertia of the aforementioned thrust "dead point". The first front running platform assembly 100 and the first rear running platform assembly 300 swing symmetrically to both sides, and the middle rotating plate assembly 200 descends to generate a reverse torque, ultimately achieving the extension of both to a horizontal state.

[0124] Furthermore, when the first front running platform assembly 100 and the first rear running platform assembly 300 extend and approach the ground, the running belt 500 forms a horizontal reverse pull on the whole machine to lay flat and reset. At this time, the connecting rod assembly 400 contacts the ground and provides a reverse thrust. This thrust is opposite to the limiting pull of the running belt 500. Moreover, the first front running platform assembly 100 and the first rear running platform assembly 300 still have a symmetrical, vertically upward rotational torque relative to the intermediate turn plate assembly 200 to overcome the above-mentioned reverse pull until the three-section connecting structure is fully extended and in a horizontal state.

[0125] When extended to a horizontal position, one end of the intermediate rotating plate assembly 200 (e.g.) Figure 7 The electric folding treadmill (as shown in side A) is in contact with the end face of the front running plate 115 of the first front running plate assembly 100, and its other end is in contact with the end face of the rear running plate 303 of the first rear running plate assembly 300. The folding treadmill remains flat and not dented.

[0126] Example 2, as Figures 10 to 14-2 As shown, the electric folding treadmill mainly includes the following components:

[0127] The second front running platform assembly 700 and the second rear running platform assembly 800 together form the running support and connection part;

[0128] A transmission component is disposed in the second front running platform assembly 700 or the second rear running platform assembly 800, for driving the second front running platform assembly 700 and the second rear running platform assembly 800 to swing and extend to the sides or fold and store in the middle.

[0129] The linkage assembly 400 is located on the second front running platform assembly 700 or the second rear running platform assembly 800, and assists in the folding and storage and horizontal extension of both under the drive of the transmission assembly.

[0130] The treadmill belt is fitted in a closed loop between the second front treadmill assembly 700 and the second rear treadmill assembly 800 to support and propel the exerciser forward on it.

[0131] The front support assembly 600 is used to connect to and support the second front running platform assembly 700 (i.e., the weight of the front of the treadmill) and serves as the base for overall support of the treadmill when folded.

[0132] The front support assembly 600 is composed of a front support base plate 601 and a front roller support 602 fixedly connected. A sixth bearing 605 is sleeved on both sides of the front support base plate 601. The front roller 603 is axially mounted on the front roller support 602 through a pin 604 and can rotate around the pin 604.

[0133] During normal use of the treadmill, the front support base plate 601 is in contact with the ground while the front roller 603 is not in contact with the ground; during the folding and storage of the second front running platform assembly 700 and the second rear running platform assembly 800, the second front running platform assembly 700 swings, the front roller 603 contacts the ground while the front support base plate 601 does not contact the ground; after folding and storage, the entire treadmill can be moved by rolling the front roller 603.

[0134] The second front running platform assembly 700 is a rectangular frame structure assembled from a first rod, a second rod, a third rod, and a fourth rod (not shown in the figure). Two front rotating plates 712 are fixedly connected to both ends of the frame structure. A sixth rotating shaft 710 is sleeved on the front of the frame.

[0135] The sixth pivot 710 passes through the sixth bearing 605 to achieve a rotatable connection with the front support assembly 600; the front rotating plates 712 at the other end are laterally connected by the seventh pivot 711, which is respectively fitted onto the seventh bearing 714 at both ends. The seventh pivot 711 is located slightly below the center line of the running belt 500.

[0136] A ninth gear 713 with a gear and sprocket composite structure is fitted on the seventh rotating shaft 711 to achieve synchronous fixed-axis rotation of the two.

[0137] A running motor and a front running roller core shaft are provided at the far end of the aforementioned frame structure. A front running roller is sleeved on the outer diameter of the front running roller core shaft via bearings. Driven by the running motor, the front running roller rotates axially around the front running roller core shaft.

[0138] The second rear running platform assembly 800 is composed of two sets of symmetrically arranged fifth and sixth rods (not shown in the figure). After the fifth and sixth rods are spliced ​​together, the rear running plate is fixedly connected at the top and an array of buffer pads is fixedly connected at the bottom.

[0139] A rear running roller mandrel is installed on the far end of the fifth rod in both sets. The rear running roller is sleeved on the rear running roller mandrel through a bearing and can rotate around its fixed axis.

[0140] The running belt is fitted in a closed loop between the front running roller and the rear running roller.

[0141] Two sets of symmetrically arranged rear rotating plates 810 are fixedly connected to the near ends of the two sets of fifth rods. The two sets of rear rotating plates 810 are laterally connected by a rear tie rod 814. Two sets of eighth bearings 811 are respectively sleeved on the two sets of rear rotating plates 810. The two ends of the rear gear shaft 812 are fixedly connected to the rear rotating plates 810. The tenth gear 813 is fixedly sleeved on the outer diameter of the rear gear shaft 812.

[0142] The two ends of the seventh rotating shaft 711 are respectively fitted onto the eighth bearing 811 and can rotate around it on a fixed axis. At the same time, the gear part of the ninth gear 713 meshes with the tenth gear 813, thereby realizing a two-stage rotating connection between the second front running platform assembly 700 and the second rear running platform assembly 800.

[0143] The second front runway assembly 700 has two sets of eighth gears 230 and third gears 210 with a composite structure of gears and sprockets on its inner side shaft. The gear part of the eighth gear 230 meshes with the third gear 210.

[0144] The third chain 234 is looped between the sprocket portion of the ninth gear 713 and the sprocket portion of the eighth gear 230.

[0145] The connecting rod assembly 400 has the same structure and connection relationship as the connecting rod assembly in Embodiment 1, with the first connecting rod shaft 401 of the connecting rod assembly 400 axially arranged between the third gear 210 and the third sprocket 152.

[0146] The transmission assembly includes a linkage reducer motor base 141 connected to the second front runway assembly 700. The linkage reducer motor 140 is fixedly connected to the linkage reducer motor base 141. The output end of the linkage reducer motor 140 passes through the linkage reducer motor base 141 and a first sprocket 142 is sleeved on it. A second sprocket 144 with an axial double sprocket structure is mounted on the linkage reducer motor base 141. A first chain 143 is closed-loop sleeved between one tooth of the first sprocket 142 and the second sprocket 144. A second chain 145 is closed-loop sleeved between the third sprocket 152 and the other tooth of the second sprocket 144. Under the drive of the linkage reducer motor 140, the driving force of the reducer motor is finally transmitted to the third sprocket 152 through the above transmission mechanism.

[0147] Based on the above-described structural design of the electric folding treadmill, the method of using the electric folding treadmill in this embodiment is similar to that in Embodiment 1, and will not be repeated here.

[0148] As described above, similar technical solutions can be derived from the solutions presented in conjunction with the accompanying drawings and embodiments. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this invention, without departing from the scope of the technical solutions of this invention, shall still fall within the scope of the technical solutions of this invention.

Claims

1. An electric folding treadmill, characterized in that: It includes a first front runway assembly, a first rear runway assembly, and an intermediate turntable assembly connecting the two. A transmission component is disposed on the first front running platform assembly or the first rear running platform assembly, and is used to drive the first front running platform assembly and the first rear running platform assembly to swing and extend to both sides or fold and store in the middle with the middle rotating plate assembly as the center. The treadmill belt is fitted in a closed loop between the first front treadmill assembly and the first rear treadmill assembly to support and propel the exerciser forward on it. The first front running platform assembly has a frame structure, and two sets of first gears are symmetrically arranged on both sides of the frame structure. The transmission assembly includes a first sprocket shaft, a second sprocket shaft, and a connecting rod reduction motor. The output end of the connecting rod reduction motor is fitted with a first sprocket. A second sprocket is fitted onto the first sprocket shaft and rotates around its fixed axis. The second sprocket has an axial double sprocket structure design. A third sprocket shaft is located on one side of the first front runway assembly frame structure. A second gear shaft, having an axial gear and sprocket composite structure, is located on the second sprocket shaft and can rotate around its fixed axis. The second gear and the third sprocket are arranged opposite each other. A first chain is looped between one tooth of the first sprocket and one tooth of the second sprocket, and a second chain is looped between the third sprocket and the other tooth of the second sprocket. Driven by the connecting rod reduction motor, the driving force of the connecting rod reduction motor is ultimately transmitted to the third sprocket through the above transmission assembly. The intermediate rotating plate assembly consists of two sets of oppositely arranged end plates and a curved plate connecting the two end plates. The two ends of the second rotating shaft and the fourth rotating shaft are respectively mounted on the two end plates via bearings. The intermediate rotating plate assembly connects the first front running platform assembly and the first rear running platform assembly to form a three-section treadmill structure. Two sets of sixth gears and fifth gears are symmetrically arranged on both sides of the intermediate rotating plate assembly. An eighth gear with a gear and sprocket composite structure is sleeved on the second rotating shaft. The first rear running platform assembly has two sets of fourth gears symmetrically arranged on its side end adjacent to the middle turn plate assembly. The first gear, the sixth gear, the fifth gear, and the fourth gear are sequentially meshed and connected for transmission. A connecting rod assembly is connected to the bottom of the first front running platform assembly or the first rear running platform assembly. The connecting rod assembly is composed of a first connecting rod shaft, two sets of symmetrically arranged connecting rod plates, and a second connecting rod shaft spliced ​​together. A third connecting rod shaft is respectively mounted on the same side end of the two sets of connecting rod plates. The connecting rod roller is sleeved on the third connecting rod shaft through a bearing and can rotate around its fixed axis. The seventh gear is sleeved on one side end of the first connecting rod shaft. One end of the first connecting rod shaft is sleeved on the second connecting rod seat and can rotate around its fixed axis. The other end of the first connecting rod shaft is sleeved on the first connecting rod seat and can rotate around its fixed axis. The seventh gear sleeved on the first connecting rod shaft meshes with the gear portion of the second gear on the first sprocket plate. The third chain is sleeved in a closed loop between the sprocket portion of the second gear and the sprocket portion of the eighth gear.

2. The electric folding treadmill according to claim 1, characterized in that: The first front running platform assembly has a first rotating shaft horizontally mounted in its frame structure. The first rotating shaft rotates around the pivot points at both ends as fulcrums. A handle is fixedly connected to the end of the first rotating shaft. Two sets of eccentric sleeves are fixedly fitted on the outer diameter of the first rotating shaft. Each set of eccentric sleeves is respectively set opposite to the front roller located at the end of the frame structure. As the first rotating shaft rotates, the eccentric sleeves and the front rollers are in clearance fit or interference fit.

3. The electric folding treadmill according to claim 2, characterized in that: The first front running platform assembly has an elastic plate connected to the bottom of its frame structure. The elastic plate has an arc-shaped, elastic end.

4. The electric folding treadmill according to claim 3, characterized in that: The intermediate rotating plate assembly has a set of shoulder screws fixedly connected to the outside of each set of end plates, and the fifth gear is sleeved on the shoulder screw and can rotate around its fixed axis. Two sets of bearing sleeves are symmetrically fixed on the two sets of end plates. A set of third bearings is fitted on each bearing sleeve. The two ends of the third shaft are respectively fitted with the third bearings. The third gear is fixedly fitted on the outer diameter of one end of the third shaft. A set of sixth gears is fixedly connected to the two ends of the third shaft.

5. The method of using the electric folding treadmill as described in claim 4, characterized in that: Including the following usage stages, Normal use When the electric folding treadmill is in a flat position, the running motor drives the running belt to run in a closed loop between the front and rear running rollers, allowing the exerciser to run and exercise normally on the running belt. 2) Folding stage A folding command is sent from the outside to the linkage reduction motor, which starts and sequentially drives the first sprocket, the first chain, the second sprocket, the second chain, the third sprocket, the first linkage shaft, and so on up to the seventh gear and the first linkage shaft. The driving force is transmitted from the seventh gear to the sixth gear in sequence through the second gear, the third chain, the eighth gear, and the third gear; the first gear and the fourth gear rotate synchronously, and the sixth gear and the fifth gear rotate synchronously; the first front running platform assembly and the first rear running platform assembly swing symmetrically vertically from both sides toward the middle rotating plate assembly; On the other hand, the driving force is transmitted to the connecting rod assembly by the seventh gear, and the entire connecting rod assembly rotates in the same direction as the seventh gear. The first front running platform assembly and the first rear running platform assembly swing from both sides toward the middle rotating plate assembly until they are vertically parallel to each other. The middle rotating plate assembly remains parallel to the ground throughout the ascent process. 3) Stretching phase An extension command is sent from the outside to the linkage reduction motor, which sequentially drives the first sprocket, the first chain, the second sprocket, the second chain, the third sprocket, the first connecting rod shaft, and so on up to the seventh gear and the first connecting rod shaft; The first front runway assembly and the first rear runway assembly each swing vertically to the sides of the intermediate rotating plate assembly, with the intermediate rotating plate assembly as the center. The first front runway assembly and the first rear runway assembly gradually extend until they are in a horizontal state; the intermediate rotating plate assembly remains parallel to the ground throughout the descent.

6. The method of using the electric folding treadmill according to claim 5, characterized in that: During the aforementioned folding phase, the seventh gear drives the first connecting rod shaft to rotate, and the connecting rod roller contacts the ground and presses down on the ground; the connecting rod assembly provides auxiliary upward assistance from one side of the first front runway assembly to the three-section connecting structure consisting of the first front runway assembly, the intermediate turntable assembly, and the first rear runway assembly. When the folding action is completed, the arc-shaped elastic end of the elastic plate is squeezed by the first rear running platform assembly. Under the combined pushing action of the first front running platform assembly and the first rear running platform assembly, the elastic plate stores energy and tends to push away from both of them.

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