Foldable leg lifter

Abstract

Foldable leg lift device, with a basic arrangement (10) comprising a first support rod (11), a second support rod (12) and two third support rods (13), wherein the first and second support rods (11, 12) are each connected at their lower ends to a crossbar (14, 15) which can lie flat on the ground, wherein the upper end of the second support rod (12) is hinged to the center of the first support rod (11), wherein the upper ends of the two third support rods (13) are hinged to two sides of the upper end of the first support rod (11), and wherein a transverse support element (17) is provided below the two third support rods (13); a main handle support (20) which is attached at its upper end to the front section of the first support rod (11) and is provided with a handle (23) at its upper end; two drive rods (30) which are pivotally connected at their upper ends to one side of the two third support rods (13) and which can pivot alternately forwards and backwards along an arc-shaped path of movement, with a pedal (40) pivotally connected at each of their lower ends; and a coupling mechanism (60) comprising a pivoting body (61), two connecting rods (62) and two resistance cylinders (63), wherein the pivoting body (61) is arranged symmetrically and pivotably behind the two third support rods (13) on the left and right, wherein the lower ends of the connecting rods (62) are pivotally connected to the left and right sides of the pivoting body (61) and the upper ends are connected to the first joints (31) on the upper ends of the drive rods (30), wherein the upper ends of the resistance cylinders (63) are pivotally connected to the left and right sides of the pivoting body (61) and a fastening element (64) is firmly connected between their lower ends and the support element (17) in each case, so that the two drive rods (30) can pivot alternately forwards and backwards through the pivoting body (61).

Description

Technical area

[0001] The invention relates to a foldable leg lifting device that has a folding function and enables training with alternating leg lifting movements. State of the art

[0002] A conventional leg raiser generally includes a base, a front handle, a rear support rod, a drive mechanism, a magnetic resistance mechanism, and a linkage mechanism. The drive mechanism consists of two rods pivotally mounted on either side of the rear support rod at one end and pivotally connected to a pedal at the other end. Sprockets and a chain are mounted between two sides of the rear support rod and one end of the two rods. The magnetic resistance mechanism can be driven in one direction by the sprockets, generating resistance. The linkage mechanism allows the two rods to pivot in opposite directions. However, there are the following drawbacks: (1) The cost of the sprockets and chain is too high, and calibration and adjustment for smooth rotation is time-consuming.(2) The magnetic resistance mechanism requires at least a magnetic control assembly, wheels, and a belt (or chain), which leads to high costs. (3) The above two points even result in long assembly times and excessive costs for the entire device. In the current economic downturn, buyers cannot accept this, and it is difficult to sell. (4) Folding is not possible, and thus requires a large amount of space. Object of the invention

[0003] The invention provides a foldable leg lifting device, comprising a base assembly having a first support rod, a second support rod and two third support rods, wherein the first and second support rods are each connected at their lower ends to a crossbar which can lie flat on the ground, wherein the upper end of the second support rod is foldably connected to the center of the first support rod, wherein the upper ends of the two third support rods are foldably hinged to two sides of the upper end of the first support rod, and wherein a transverse support element is provided below the two third support rods; ; a main handle support which is attached at its upper end to the front section of the first support rod and is provided with a handle at the upper end; two drive rods, which are pivoted by their upper ends to one side of the two third support rods and can pivot alternately forwards and backwards along an arcuate path of movement, with a pedal pivoted at each of their lower ends; and a coupling mechanism including a pivoting body, two coupling rods, and two resistance cylinders, the pivoting body being arranged symmetrically and pivotably behind the two third support rods 13 on the left and right, the lower ends of the coupling rods being pivotally connected to the left and right sides of the pivoting body, and the upper ends being connected to the first joints at the upper ends of the drive rods, the upper ends of the resistance cylinders being pivotally connected to the left and right sides of the pivoting body, and a fastening element being firmly connected between their lower ends and the support element, so that the two drive rods can pivot alternately forwards and backwards through the pivoting body.

[0004] The advantages of the invention are as follows: The alternating leg raises with resistance can effectively train the hip, knee, and ankle joints and stretch the core muscles, such as the abdominals and glutes. Assembly is quick and the cost is low. The price of the entire device is quite competitive, easily attracting the attention of buyers and consumers. The components are collapsible, reducing the volume of the shipping packaging and allowing for space-saving storage. Short description of the drawings Fig. 1 is a perspective view of the first embodiment of the invention, Fig. 2 is an exploded view of the first embodiment of the invention, Fig. 3 a rear view of the first embodiment of the invention, Fig. 4 is a view of the folding of the first embodiment of the invention, Fig. 5 shows the use of the first embodiment of the invention, Fig. 6 is a perspective view of the second embodiment of the invention, Fig. 7 is an exploded view of the second embodiment of the invention, Fig. 8 is a view of the folding of the second embodiment of the invention, Fig. 9 shows an illustration of the use of the second embodiment of the invention. Ways to implement the invention

[0005] Fig. 1 to 5 show the first embodiment of the foldable leg lifting device of the invention, which comprises: a base assembly 10 comprising a first support rod 11, a second support rod 12, and two third support rods 13, wherein a transverse support element 17 is provided below the two third support rods 13, wherein the first and second support rods 11 and 12 are each connected at their lower ends to a crossbar 14 and 15 which can lie flat on the ground, wherein the crossbar 14 of the first support rod 11 is provided with two rollers 18, wherein the upper end of the second support rod 12 is hingedly connected to the center of the first support rod 11, wherein the upper ends of the two third support rods 13 are hingedly hinged to two sides of the upper end of the first support rod 11, with their lower ends resting on the ground, wherein the second support rod 12 extends between the two third support rods 13, and a fastening pin 70 connects the second support rod 12 and the two third support rods 13 to each other,and wherein a fastening piece 16 is fastened between the two third support rods 13;, a main handle support 20 having an upper handle support rod 21 and a lower fixing rod 22 hingedly connected to each other at one end, the upper handle support rod 21 and the lower fixing rod 22 being fixed to each other by a fixing pin 80, the upper handle support rod 21 being provided with a handle 23 at the other end and a control panel 24 at the top, and the other end of the lower fixing rod 22 being fixed to the front portion of the first support rod 11; two drive rods 30, which are pivoted with their upper ends to one side of the two third support rods 13 as a pivot point and can pivot alternately forwards and backwards along an arcuate path of movement, with a pedal 40 being pivoted at their lower ends in each case, with a first joint 31 being provided at the upper ends of each of the two drive rods 30; a seat 50 disposed on the first support rod 11 and near the upper end of the first support rod 11; and a coupling mechanism 60 which includes a pivoting body 61, two coupling rods 62 and two resistance cylinders 63, wherein the pivoting body 61 is arranged symmetrically and pivotably behind the fastening piece 16 of the two third support rods 13 on the left and right, wherein the lower ends of the coupling rods 62 are pivotally connected to the left and right sides of the pivoting body 61 and the upper ends are connected to the first joints 31 at the upper ends of the drive rods 30, wherein the upper ends of the resistance cylinders 63 are pivotally connected to the left and right sides of the pivoting body 61 and a fastening element 64 is firmly connected between their lower ends and the support element 17, so that the two drive rods 30 can pivot alternately forwards and backwards by means of the pivoting body 61.

[0006] The upper end of the first support rod 11, the upper ends of the two third support rods 13 and the two drive rods 30 are articulated by the same axle rod 111.

[0007] Fig. 6 to 9 show the second embodiment of the invention in which the following components are added: Two auxiliary handle support assemblies 90 which are hinged to two sides of the base assembly 10, wherein the upper ends of the two drive rods 30 are each provided with a second joint 32, wherein the auxiliary handle support assembly 90 includes a first coupling rod 91, wherein the lower end of the first coupling rod 91 is hinged to one side of the main handle support 20, wherein a second coupling rod 92 extends from the first coupling rod, wherein the first coupling rod 91 and the second coupling rod 92 have different angles, wherein the lower end of the second coupling rod 92 is hingedly connected to the front end of a third coupling rod 93, and wherein the rear end of the third coupling rod 93 is hingedly connected to the second joint 32 at the upper end of the drive rod 30.

[0008] With the above structure and composition, the use of the present invention is described as follows: (1) First, as in the first embodiment in Fig. 1 to 5, the user grasps the handle 23 with both hands and steps on the pedals 40 with his feet. By pivoting the coupling mechanism 60, which is arranged symmetrically on the left and right at the rear of the third support rod 13, the two drive rods 30 also pivot forwards and backwards alternately and against the resistance along an arc-shaped movement path. (2) In the Fig. In the second embodiment shown in Figures 6 to 9, in addition to paragraph (1) above, the auxiliary handle support assemblies 90 are added to both sides of the base assembly 10. The user can grasp the first coupling rods 91 with both hands, which swing due to the swinging of the two drive rods 30, allowing the user to simultaneously perform the swinging movements of the hands and legs against the resistance.

[0009] With the structure of the above specific embodiments, the present invention can achieve the following advantages: (1) In the first and second embodiments, the alternating leg lifting movements with resistance can effectively exercise the hip, knee and ankle joints and stretch the core muscles such as the abdominal muscles and gluteal muscles. (2) In the second embodiment, in addition to the advantages described in paragraph (1) above, the hands can also swing forward and backward alternately against the resistance to stretch the forearms, upper arms, triceps and other muscle groups. (3) There is no complicated magnetic resistance mechanism and coupling mechanism. Assembly and component costs are low. The price of the entire device is quite competitive and can easily attract the attention of buyers and consumers. (4) As in Fig. 4 and Fig.As shown in Figure 8, by loosening the fastening pins 70 and 80, the first support rod 11, the second support rod 12, the two third support rods 13, the upper handle support rod 21, and the lower fastening rod 22 can be folded together. The seller reduces the volume of the shipping packaging, and the buyer saves on import costs. Furthermore, the buyer can fold the invention for space-saving storage. (5) In both the first embodiment and the second embodiment, the two resistance cylinders 63 generate resistance for the two drive rods 30 and the two auxiliary handle support assemblies 90 during the alternate leg lifting movements and the forward and backward swinging movements of the hands, so that the training effect of the user's body is more noticeable. List of reference symbols 10 Basic arrangement 11 first support rod 111 axle rod 12 second support rod 13 third support rod 14 Crossbar 15 Crossbar 16 fastening piece 17 Support element 18 rolls 20 Main handle support 21 upper handle support bar 22 lower mounting rod 23 Handle 24 Control panel 30 drive rod 31 first joint 32 second joint 40 Pedal 50 seats 60 coupling mechanism 61 swivel body 62 coupling rod 63 resistance cylinders 64 Fastening element 70 fixing pin 80 fixing pin 90 secondary handle support arrangement 91 first coupling rod 92 second coupling rod 93 third coupling rod

Claims

[1] Foldable leg lifting device, with a base assembly (10) comprising a first support rod (11), a second support rod (12) and two third support rods (13), the first and second support rods (11, 12) being each connected at their lower ends to a transverse rod (14, 15) which can lie flat on the ground, the upper end of the second support rod (12) being foldably connected to the center of the first support rod (11), the upper ends of the two third support rods (13) being foldably articulated on two sides of the upper end of the first support rod (11), and a transverse support element (17) being provided below the two third support rods (13); a main handle support (20) which is attached at its upper end to the front portion of the first support rod (11) and is provided with a handle (23) at the upper end; two drive rods (30) which are pivotally connected by their upper ends to one side of the two third support rods (13) and can pivot alternately forwards and backwards along an arcuate path of movement, with a pedal (40) being pivotally connected to each of their lower ends; and a coupling mechanism (60) comprising a pivoting body (61), two coupling rods (62), and two resistance cylinders (63), the pivoting body (61) being arranged symmetrically and pivotably to the left and right behind the two third support rods (13), the lower ends of the coupling rods (62) being pivotally connected to the left and right sides of the pivoting body (61), and the upper ends being connected to the first joints (31) at the upper ends of the drive rods (30), the upper ends of the resistance cylinders (63) being pivotally connected to the left and right sides of the pivoting body (61), and a fastening element (64) being firmly connected between their lower ends and the support element (17), so that the two drive rods (30) can pivot alternately forwards and backwards by means of the pivoting body (61). [2] Foldable leg lifting device according to claim 1, characterized bythat the first support rod (11), the two third support rods (13) and the two drive rods (30) are articulated by the same axle rod (111). [3] Foldable leg lifting device according to claim 1, characterized by that the second support rod (12) runs between the two third support rods (13) and a fastening pin (70) connects the second support rod (12) and the two third support rods (13) to one another. [4] Foldable leg lifting device according to claim 1, characterized by that a seat (50) is arranged on the first support rod (11). [5] Foldable leg lifting device according to claim 1, characterized byin that the main handle support (20) has an upper handle support rod (21) and a lower fastening rod (22) which are foldably connected to one another at one end, the upper handle support rod (21) and the lower fastening rod (22) being fastened to one another by a fastening pin (80), the upper handle support rod (21) being provided with a handle (23), and the other end of the lower fastening rod (22) being fastened to the front section of the first support rod (11). [6] Foldable leg lifting device according to claim 1, characterized by that the upper handle support rod (21) is provided with a control panel (24) at the top, wherein the cross bar (14) of the first support rod (11) is provided with two rollers (18). [7] Foldable leg lifting device according to claim 1, characterized bythat a fastening piece (16) is fastened between the two third support rods (13), wherein the pivoting body (16) is articulated with its center point on the left and right symmetrically to the fastening piece (16). [8] Foldable leg lifting device according to claim 1, characterized by that a first joint (31) is provided at each of the upper ends of the two drive rods (30), wherein the joints (31) are connected to the upper ends of the coupling rods (62). [9] Foldable leg lifting device according to claim 1, characterized byin that a second joint (31) is provided at each of the upper ends of the two drive rods (30), wherein two auxiliary handle support assemblies (90) are articulated on two sides of the base assembly (10), wherein the auxiliary handle support assembly (90) includes a first coupling rod (91), wherein the lower end of the first coupling rod (91) is articulated on one side of the main handle support (20), wherein a second coupling rod (92) extends from the first coupling rod, wherein the lower end of the second coupling rod (92) is articulated to the front end of a third coupling rod (93), and wherein the rear end of the third coupling rod (93) is articulated to the second joint (32).

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