Frame-shaped leg lifting device with stable pedaling and swiveling motion
The frame-shaped leg lifting device addresses pedal tilting issues by using secondary and main leg pivot rods and a magnetically controlled resistance mechanism for stable pedaling and pivoting, ensuring secure foot placement and enhanced safety.
Patent Information
- Application Number
- DE202025106901
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2025-12-24
- Estimated Expiration
- 2035-11-30
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical field
[0001] The invention relates to a frame-shaped leg lifting device with stable pedaling and pivoting motion, which is a training device and uses stable and robust leg pivoting bars in combination with pedals, so that the user can safely and stably pedal and perform the training by alternating the lifting motion of the legs. State of the art
[0002] In the inventor's previous application, number 113108367, a frame-shaped leg-lifting device is known. It consists mainly of a main frame in which at least two driving leg pivot rods, two handle pivot rods, a pivot assembly, and a magnetically controlled resistance mechanism are provided. The driving leg pivot rods are arranged on both sides of the main frame and are pivotably connected at their lower ends to a pedal. A transverse drive rod is provided at their upper ends, which is pivotally connected to the handle pivot rods. Simultaneously, the upper ends of the two driving leg pivot rods are pivotally connected to the pivot assembly. The pivot assembly is connected to the magnetically controlled resistance mechanism.The magnetically controlled resistance mechanism simultaneously applies resistance to the two driving leg pivot rods and the two handle pivot rods. This allows the user to alternately perform a limited forward and backward leg pivoting motion along an arc-shaped path, while simultaneously achieving the practical benefits of magnetically controlled resistance, stable pivoting movement, and improved safety. However, the invention has the following disadvantages: (1) Since the driving pivot rod is articulated to the center of the pedal side, when the user presses the pedal there is a high probability that the pedal will tilt from side to side, causing the user’s foot to slip forward or backward off the pedal and sprain the ankle, which is dangerous during use. (2) After the user is securely standing on the pedal and then performs the alternating leg pivoting motion, the forward and backward pivoting of the leg drive rod and the corresponding pedaling by the user increases the likelihood that the pedal will tilt from side to side, causing the user's foot to slip forward or backward off the pedal. This can result in the user falling completely off the frame leg lift and injuring themselves or even striking their head against various components of the frame leg lift, leading to greater and unimaginable hazards during use. Object of the invention
[0003] The aforementioned frame-shaped leg lift has a low safety standard. When the user presses the pedal, there is a likelihood that it will tilt back and forth, causing the user's foot to slip forward or backward off the pedal. This could result in the user falling completely off the frame-shaped leg lift and injuring themselves, or even striking their head against various components of the device.
[0004] The object of the invention is to provide a frame-shaped leg-lifting device with a stable pedaling and pivoting motion, comprising: a main frame, wherein the front vertical supports and the rear vertical supports are connected between the two sides of the lower base frame and the front and rear of the side supports; two driving leg-pivot rod assemblies, each comprising a main leg pivot rod and a secondary leg pivot rod, wherein the main leg pivot rod and the secondary leg pivot rod are pivotably mounted at their upper ends on the rear vertical support and the side support and form pivot points, thereby enabling them to pivot alternately forwards and backwards along an arc-shaped path of movement within the main frame, wherein the secondary leg pivot rod and the main leg pivot rod are pivotably mounted at their lower ends at a front and a rear position on the side of a pedal.wherein a joint section extends from one side of the upper end of the main leg pivot rod, the joint section being connected at its lower end to an end of a first output element, the lower end of the first output element being pivotally connected to an end of a rear pivot element, and one side of the rear pivot element being supported on the rear vertical support; a pivot assembly comprising at least one transverse pivot part, two connecting rods, and two bottom rods, the transverse pivot part being pivotally connected to the rear rod and its two ends being pivotally connected to the ends of the connecting rods, the other end of each connecting rod being pivotally connected to the rear pivot element, the rear end of each bottom rod being pivotally connected to the rear pivot element, and the front end being pivotally connected to an end of a front pivot element;and wherein the other ends of the two front pivot elements, together with the two joint parts, are axially penetrated by a pivot axis; and a magnetically controlled resistance mechanism mounted in the front region of the lower floor frame and providing resistance to the pivot assembly, wherein the magnetically controlled resistance mechanism includes at least one rotatable magnetic steering wheel, and wherein the magnetic steering wheel has a drive wheel on one side of the axis; and a speed ratio adjustment mechanism mounted in the front region of the lower floor frame and coupled simultaneously to the pivot assembly and the magnetic control resistance mechanism, wherein the speed ratio adjustment mechanism includes at least one transmission module and one transmission belt, the transmission module consisting of a rotatable pulley and a second transmission belt,wherein the pulley and the drive wheel of the magnetic control wheel are jointly looped by the second transmission belt, wherein the pulley has a drive wheel on one side of the axle, and wherein the drive wheel and one end of the axis of rotation are jointly looped by the transmission belt. The advantages of the invention are as follows:
[0005] Because the secondary leg pivot bar and the main leg pivot bar are pivotally mounted at the front and rear of the pedal side, no forward or backward tilting or twisting occurs when the user presses the pedals. This allows the user's feet to rest securely and firmly on the pedals without slipping and causing ankle sprains. When the user's feet are pressed onto the pedals and the leg pivoting motion is performed alternately, as shown in the figure, the pedals always remain horizontal without tilting or twisting. The user's feet can rest securely and firmly on the pedals without the risk of the user falling off the frame-like leg lift and injuring themselves or even hitting their head against various components of the frame-like leg lift, thus ensuring a high level of user safety during use. Brief description of the drawings Fig. 1 a perspective view of the first embodiment of the invention, Fig. 2 an exploded view of the front cover plate, the rear cover plate and the second cover element of the first embodiment of the invention, Fig. 3 a perspective view from another viewing direction of the first embodiment of the invention, Fig. 4 an exploded view of the driving leg pivot rod assembly of the first embodiment of the invention, Fig. 5 an exploded view of the swivel assembly of the first embodiment of the invention, Fig. 6 a representation of the assembly of the driving leg pivot rod assembly and the pivot assembly of the first embodiment of the invention, Fig. 7 an exploded view according to Fig. 6, Fig. 8 a representation of the driving leg pivot rod assembly and the pedal of the first embodiment of the invention, Fig. 9 a perspective view of the second embodiment of the invention, Fig. 10 an exploded view of the driving leg pivot rod assembly and the handle pivot rod of the second embodiment of the invention, Fig. 11 a representation of the assembly of the driving leg pivot rod assembly, the handle pivot rod and the pivot assembly of the second embodiment of the invention, Fig. 12 an exploded view according to Fig. 11, Fig. 13 a representation of the magnetically controlled resistance mechanism of the invention, Fig. 14 a representation of the magnetically controlled resistance mechanism from another perspective of the invention, Fig. 15 A representation of the design of the first output element as a rope of the invention. Ways to implement the invention
[0006] As in the Fig. The frame-shaped leg-lifting device with stable pedaling and pivoting motion of the invention, as shown in Figures 1 to 8 and 13 to 14, comprises: a main frame 10 comprising a lower base frame 11, two side supports 12, two front vertical supports 13, and two rear vertical supports 14, wherein the front and rear sections of the lower base frame 11 are each provided in the transverse direction with a front rod 112 and a rear rod 111, the front rod 112 being provided with two parallel hinge parts 113, the underside of the lower base frame 11 being pivotally connected to a pivotable lifting frame 80, the front vertical supports 13 and the rear vertical supports 14 being connected between the two sides of the lower base frame 11 and the front and rear of the side supports 12, the front ends of the two side supports 12 being connected together to a front support 15, the front support 15 being connected to a bracket 16, and the two side supports 12 each being connected to a handle frame 17 are connected; Two driving leg pivot rod assemblies 20, each comprising a main leg pivot rod 21 and a secondary leg pivot rod 22, wherein the main leg pivot rod 21 and the secondary leg pivot rod 22 are pivotally mounted at their upper ends on the rear vertical support 14 and the side support 12 and form pivot points, thereby enabling them to pivot alternately forwards and backwards along an arc-shaped path of movement within the main frame 10, wherein the secondary leg pivot rod 22 and the main leg pivot rod 21 are pivotally mounted at their lower ends at a front and a rear position on the side of a pedal 30, wherein a joint section 211 extends from one side of the upper end of the main leg pivot rod 21, the joint section 211 being successively pivotally connected at its lower end to a joint element 44, a first output element 42, and a joint element 45.wherein the joint element 45 is pivotally connected to one end of a rear pivot element 43, and wherein one side of the rear pivot element 43 is pivotably mounted on the rear vertical support 14; a pivot assembly 50 comprising at least one transverse pivot part 51, two connecting rods 52 and two base rods 53, wherein the transverse pivot part 51 is pivotably connected to the rear rod 111 and its two ends are pivotally connected to the ends of the connecting rods 52, wherein the other end of each connecting rod 52 is pivotally connected to the rear pivot element 43, wherein the rear end of each base rod 53 is pivotally connected to the rear pivot element 43 and the front end is pivotally connected to one end of a front pivot element 54, and wherein the other ends of the two front pivot elements 54 together with the two joint parts 113 are axially penetrated by a pivot axis 55; a magnetically controlled resistance mechanism 70, which is mounted in the front area of the lower floor frame 11 and provides resistance to the pivot assembly 50, wherein the magnetically controlled resistance mechanism 70 includes at least one rotatable magnetic steering wheel 72, and wherein the magnetic steering wheel 72 has a drive wheel 721 on one side of the axle;a speed ratio adjusting mechanism 60, which is mounted in the front region of the lower floor frame 11 and is coupled simultaneously with the pivot assembly 50 and the magnetic control resistance mechanism 70 to adjust the resistance-to-speed ratio, wherein the speed ratio adjusting mechanism 60 comprises at least one transmission module 61 and a transmission belt 73, wherein the transmission module 61 consists of a rotatable pulley 71 and a second transmission belt 74, wherein the pulley 71 and the drive wheel 721 of the magnetic control wheel 72 are jointly looped by the second transmission belt 74, wherein the pulley 71 has a drive wheel 711 on one side of the axis, and wherein the drive wheel 711 and one end of the pivot axis 55 are jointly looped by the transmission belt 73; and; a lifting mechanism 90 which is arranged between the lower floor frame 11 and the lifting frame 80, wherein the lifting mechanism 90 drives the lifting frame 80 to pivot, thereby changing the lower floor frame 11 into different lifting and tilting angles.
[0007] The top of the lower base frame 11 is covered by a front cover plate 18 and a rear cover plate 19. The front cover plate 18 covers the magnetically controlled resistance mechanism 70, and the rear cover plate 19 covers the swivel assembly 50.
[0008] The two rear vertical supports 14 are each covered on one side by a second cover element 141. The second cover elements 141 are used to cover the joint sections 211, the joint elements 44, the first drive elements 42, and the joint sections 45.
[0009] The first output element 42 can be a rod (as in Fig. 6 shown) or a rope (as shown in Fig. 15 shown).
[0010] The speed ratio adjusting mechanism 60 also includes two transmission modules 61. Two support rods 115 are also provided in the front area of the lower base frame 11. The transmission modules 61 are mounted on one of the support rods 115. The pulleys 71 and the drive wheels 711 are pivotally mounted on opposite sides of the support rods 115. The drive wheel 711 of one transmission module 61 and the pulley 71 of the other transmission module 61 are connected by the second transmission belt 74 of the other transmission module 61, thus linking the two transmission modules 61 together for transmission.
[0011] Secondly, the lower end of a handle pivot rod 40 is pivotally attached to each of the two sides of the base frame 11. The middle section of each handle pivot rod 40 is pivotally connected to one end of a transverse drive rod 41. The other end of the transverse drive rod 41 is pivotally connected to the joint section 211 of the main leg pivot rod 21. The two side supports 12 are each provided on their inner side with a first cover element 122. The first cover elements 122 are used to cover the transverse drive rods 41. Each of the first cover elements 122 has a longitudinal slot 121 through which the handle pivot rod 40 can be guided and pivoted.
[0012] Based on the structure and design described above, the functionality and movement of this invention are described below: (I): As in the Fig. Figures 1-8 and 13-14 of the first embodiment are shown: 1. When using the device, the user first places both feet on the pedals 30 and alternately pivots the two driving leg pivot rod assemblies 20, causing them to pivot alternately forwards and backwards along an arc-shaped path. 2. When the driving leg pivot rod assembly 20 is pivoted, the joint element 44, the first output element 42, the joint element 45 and the rear pivot element 43 are moved one after the other, thereby pulling the bottom rod 53 at the same time, causing the front pivot element 54 to pivot and thus rotating the axis of rotation 55. 3. As in the Fig. 13 and Fig. As shown in Figure 14, when the axis of rotation 55 is turned, the transmission belt 73 transmits the force via the speed ratio adjusting mechanism 60 to the magnetic control wheel 72 of the magnetically controlled resistance mechanism 70. When the magnetic control wheel 72 rotates, it simultaneously provides resistance in the opposite direction to the two driving leg pivot rod assemblies 20. (II): Secondly, as in the Fig. Figures 9 to 14 show the second embodiment: 1. When using the device, the user holds the handle pivot rods 40 with both hands and presses both feet on the pedals 30 to pivot the two driving leg pivot rod assemblies 20. This causes the handle pivot rods 40 to move simultaneously via the transverse drive rods 41, pivoting alternately forward and backward. The two driving leg pivot rod assemblies 20 pivot alternately forward and backward along an arc-shaped path of movement. 2. When the driving leg pivot rod assembly 20 is pivoted, the joint element 44, the first output element 42, the joint element 45 and the rear pivot element 43 are moved one after the other, thereby pulling the bottom rod 53 at the same time, causing the front pivot element 54 to pivot and thus rotating the axis of rotation 55. 3. As in Fig. As shown in Figure 13, when the rotating shaft 55 is turned, the transmission belt 73 transmits the force via the speed ratio adjusting mechanism 60 to the magnetic control wheel 72 of the magnetically controlled resistance mechanism 70. When the magnetic control wheel 72 turns, it simultaneously provides resistance in the opposite direction to the two driving leg pivot rod assemblies 20 and the handle pivot rods 40.
[0013] By using the structure of the specific embodiments described above, the present invention can achieve the following advantages: 1. Since the secondary leg pivot rod 22 and the main leg pivot rod 21 are pivotably mounted at a front and a rear point on the side of the pedal 30, no forward or backward tilting or twisting occurs when the user presses the pedals 30, allowing the user's feet to rest securely and firmly on the pedals 30 without slipping and causing ankle sprains. 2. When the user steps on the pedals 30 and alternately performs the leg swinging motion, as shown in Fig. As shown in Figure 8, the pedals 30 always remain horizontal without tilting or twisting. The user's feet can rest securely and firmly on the pedals 30 without the user falling off the frame-like leg lift and injuring themselves or even hitting their head against various components of the frame-like leg lift, thus ensuring a high level of safety for the user during use. Reference symbol list 10 main frames 11 Lower floor frame 111 Rear support 112 Front support 113 Joint part 115 Support rod 12 Side support 121 longitudinal slots 122 First cover element 13 Front vertical support 14 Rear vertical support 141 Second cover element 15 Front support 16 bracket 17 handle frames 18 Front cover plate 19 Rear cover plate 20 Driving leg swivel rod assembly 21 Main leg pivot rod 211 Joint section 22 Side leg swivel rod 30 pedal 40 Swivel handle 41 transverse output rod 42 First output element 43 Rear swivel element 44 Joint element 45 Joint element 50 Swivel assembly 51 transverse swivel part 52 Connecting rod 53 Ground pole 54 Front swivel element 55 axis of rotation 60 speed ratio adjustment mechanism 61 Transmission module 70 Magnetically controlled resistance mechanism 71 Pulley 711 Drive wheel 72 Magnetic steering wheel 721 Drive wheel 73 transmission belts 74 Second transmission belt 80 lifting frames 90 Lifting mechanism
Claims
[1] Frame-shaped leg-lifting device with stable pedaling and pivoting motion, comprising a main frame (10) wherein the front vertical supports (13) and the rear vertical supports (14) are connected between the two sides of the lower floor frame (11) and the front and rear of the side supports (12); two driving leg pivot rod assemblies (20), each comprising a main leg pivot rod (21) and a secondary leg pivot rod (22), wherein the main leg pivot rod (21) and the secondary leg pivot rod (22) are pivotally mounted at their upper ends on the rear vertical support (14) and the side support (12) and form pivot points, thereby enabling them to pivot alternately forwards and backwards along an arc-shaped path of movement within the main frame (10), wherein the secondary leg pivot rod (22) and the main leg pivot rod (21) are pivotally mounted at their lower ends on a front and a rear position of the side of a pedal (30), wherein a joint section (211) extends from one side of the upper end of the main leg pivot rod (21), the joint section (211) being connected at its lower end to an end of a first output element (42),wherein the lower end of the first output element (42) is pivotally connected to one end of a rear pivoting element (43), and wherein one side of the rear pivoting element (43) is pivotably mounted on the rear vertical support (14); a pivot assembly (50) comprising at least one transverse pivot element (51), two connecting rods (52) and two base rods (53), wherein the transverse pivot element (51) is pivotably connected to the rear rod (111) and its two ends are pivotally connected to the ends of the connecting rods (52), wherein the other end of each connecting rod (52) is pivotally connected to the rear pivot element (43), wherein the rear end of each base rod (53) is pivotally connected to the rear pivot element (43) and the front end is pivotally connected to one end of a front pivot element (54), and wherein the other ends of the two front pivot elements (54) together with the two pivot parts (113) are axially penetrated by a pivot axis (55); and a magnetically controlled resistance mechanism (70) mounted in the front region of the lower floor frame (11) and providing resistance to the pivot assembly (50), wherein the magnetically controlled resistance mechanism (70) includes at least one rotatable magnetic steering wheel (72), and wherein the magnetic steering wheel (72) has a drive wheel (721) on one side of the axle; and a speed ratio adjustment mechanism (60) which is mounted in the front region of the lower floor frame (11) and is coupled simultaneously with the pivot assembly (50) and the magnetic control resistance mechanism (70), wherein the speed ratio adjustment mechanism (60) comprises at least one transmission module (61) and a transmission belt (73), wherein the transmission module (61) consists of a rotatable pulley (71) and a second transmission belt (74), wherein the pulley (71) and the drive wheel (721) of the magnetic control wheel (72) are jointly looped by the second transmission belt (74), wherein the pulley (71) has a drive wheel (711) on one side of the axis, and wherein the drive wheel (711) and one end of the pivot axis (55) are jointly looped by the transmission belt (73). [2] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized by, that the front ends of the two side supports (12) are connected together with a front support (15), wherein the front support (15) is connected to a bracket (16), and wherein the two side supports (12) are each connected to a handle frame (17). [3] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized by, that on each of the two sides of the base frame (11) the lower end of a handle pivot rod (40) is pivotably mounted, wherein the middle section of each handle pivot rod (40) is pivotally connected to one end of a transverse drive rod (41), wherein the other end of the transverse drive rod (41) is pivotally connected to the joint section (211) of the main leg pivot rod (21), wherein the two side supports (12) are each provided on the inside with a first cover element (122), wherein the first cover elements (122) are used to cover the transverse drive rods (41), wherein the first cover elements (122) each have a longitudinal slot (121) through which the handle pivot rod (40) can be passed and pivoted. [4] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized bythat the two rear vertical supports (141) are each covered on one side by a second cover element (141). [5] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized by , that the first output element (42) is articulated at both ends to a joint element (44, 45), wherein the other ends of the joint elements (44, 45) are articulated to the joint section (211) of the main leg pivot rod (21) and to an end of the rear pivot element (43). [6] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized by , that the first output element (42) is designed as a rod. [7] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized by , that the first drive element (42) is designed as a rope. [8] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized by , that the main frame (10) has a lower floor frame (11), two side supports (12), two front vertical supports (13) and two rear vertical supports (14), wherein the front section of the lower floor frame (11) is provided in the transverse direction with a front rod (112), wherein the front rod (112) is provided with two articulated parts (113), and wherein the two articulated parts (113) and the two front pivot elements (54) are together penetrated by the axis of rotation (55). [9] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized by , that the rear section of the lower floor frame (11) is provided in the transverse direction with a rear rod (111), wherein the rear rod (111) is pivotally connected to the transverse pivoting element (51). [10] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized by , that the top of the lower base frame (11) is covered by a front cover plate (18) and a rear cover plate (19), wherein the front cover plate (18) covers the magnetically controlled resistance mechanism (70) and the rear cover plate (19) covers the pivot assembly (50). [11] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized by , that the underside of the lower floor frame (11) is pivotally connected to a pivotable lifting frame (80), wherein a lifting mechanism (90) is arranged between the lifting frame (80) and the lower floor frame (11), wherein the lifting mechanism (90) drives the lifting frame (80) to pivot, thereby changing the lower floor frame (11) to different lifting and tilting angles. [12] Frame-shaped leg lifting device with stable pedaling and pivoting motion according to claim 1, characterized by , that the speed ratio adjusting mechanism (60) includes two transmission modules (61), wherein two support rods (115) are provided in the front area of the lower floor frame (11), wherein the transmission modules (61) are mounted on the support rods (115), wherein the pulleys (71) and the drive wheels (711) are mounted on opposite sides of the support rods (115), wherein the drive wheel (711) of one transmission module (61) and the pulley (71) of the other transmission module (61) are looped by the second transmission belt (74) of the other transmission module (61), thereby coupling the two transmission modules (61) to each other for transmission.