Folding type leg lifting machine capable of swinging stably under resistance

Abstract

The invention discloses a folding type leg lifting machine with resistance stable swinging, which at least comprises a base group, a main armrest frame, two driving rods and a linkage mechanism, the base group comprises a first bracket, a second bracket and two third brackets which can be pivoted in a mutually folding manner, the main armrest frame is fixedly connected to the front section position of the first bracket, and the second bracket is fixedly connected to the front section position of the second bracket. One end of the upper grab bar and one end of the lower fixing bar are pivoted in a mutually foldable mode, the upper grab bar is provided with a grip, the upper ends of the two driving rods are pivoted to one sides of the third supports to serve as rotating fulcrums, the two driving rods swing in a front-back interactive arc-shaped track, and the lower ends of the two driving rods are respectively provided with a pedal in a pivoted mode. One end of the linkage mechanism is pivoted to the rear sides of the two third supports at the same time, and the other end of the linkage mechanism is pivoted to the upper ends of the two driving rods at the same time, so that the two driving rods swing in a front-back interactive limiting mode through the linkage mechanism. Therefore, the folding function and the leg lifting fitness effect are achieved at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of fitness equipment, in particular to a foldable leg-lifting machine with resistance and stable swing. Background Art

[0002] The existing leg lift machine generally includes a base, a front handlebar bracket, a rear bracket, a driving mechanism, a magnetic control resistance mechanism and a linkage mechanism. The driving mechanism is composed of two actuating rods, one end of which is swingably connected to the two sides of the rear bracket and the other end of which is pivotally provided with two pedals. Sprockets and chains are respectively assembled between the two sides of the rear bracket and one end of the two actuating rods. The magnetic control resistance mechanism can be driven unidirectionally by the sprockets and generate a resistance, and the linkage mechanism can allow the two actuating rods to swing in opposite directions. However, it has the following disadvantages: (i) the cost of the sprockets and chains is too high, and it takes time to calibrate and adjust them for smooth rotation; (ii) the magnetic control resistance mechanism has at least a magnetic control component, a rotating wheel, and a belt (or chain), resulting in high cost; (iii) the assembly time is long, resulting in the cost of the whole machine being too high, which is unacceptable to buyers and difficult to sell. (iv) It cannot be folded and stored, and occupies a large space. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a foldable leg-lifting machine with resistance and stable swing, which mainly solves the technical problems that the existing leg-lifting machines have a magnetically controlled resistance mechanism and a linkage mechanism that is too expensive and takes a long time to assemble, resulting in excessively high cost of the entire machine and the inability to be folded and stored, which takes up a large space.

[0004] To achieve the above object, the present invention is achieved through the following technical solutions: A foldable leg-lifting machine with resistance and stable swing, comprising: A base assembly, comprising a first bracket, a second bracket, and two third brackets, wherein the first bracket and the second bracket are respectively fixed with a first crossbar and a second crossbar which can be placed flat on the ground at their lower ends, the upper end of the second bracket is foldably pivoted to the middle section of the first bracket, the upper ends of the two third brackets are respectively foldably pivoted to two sides of the upper end of the first bracket, and the lower ends thereof are jointly provided with a horizontal support member; A main handrail frame, the lower end of which is fixedly connected to the front section of the first bracket and the upper end of which is provided with a handle; Two driving rods, each having an upper end pivotally mounted on one side of each third bracket as a rotation fulcrum and swinging in a mutually forward and backward arc trajectory, and each having a pedal pivotally mounted on its lower end; A linkage mechanism includes a swing seat, two linkage rods and two resistance telescopic cylinders. The swing seat is pivoted on the rear side of the two third brackets in a symmetrical swinging manner. Each linkage rod is pivoted at its lower end to the left and right sides of the swing seat, and is pivoted at its upper end to the upper end of each driving rod. Each resistance telescopic cylinder is pivoted at its upper end to the left and right sides of the swing seat, and its lower end is fixed to the support member by a fixing member, so that the two driving rods are swinging in a front-rear interactive limited manner by the swing seat.

[0005] Furthermore, the first bracket, the two third brackets and the two driving rods are pivotally arranged with the same axis.

[0006] Furthermore, the second bracket is inserted between the two third brackets, and the second bracket and the two third brackets are fixed to each other by a first fixing pin.

[0007] Furthermore, the first bracket is provided with a seat.

[0008] Furthermore, the main armrest frame includes an upper armrest rod and a lower fixed rod which are pivotally connected to each other in a foldable manner at one end, and the upper armrest rod and the lower fixed rod are fixed to each other by a second fixed pin. The upper armrest rod is provided with the handle, and the other end of the lower fixed rod is fixed to the front position on the first bracket.

[0009] Furthermore, a control panel is arranged on the top of the main armrest frame, and two rollers are pivotally arranged on the first crossbar of the first bracket.

[0010] Furthermore, a fixing piece is fixed between the two third brackets, and the swing seat is pivoted on the fixing piece with a center point to swing symmetrically left and right.

[0011] Furthermore, a first pivot ear extends from the upper end of the driving rod, and the first pivot ear is pivotally connected to the upper end of the linkage rod.

[0012] Furthermore, a second pivot ear extends from the upper end of the two driving rods, and a secondary handrail frame group is pivotally provided on both sides of the base group. The secondary handrail frame group includes a first connecting rod, and the first connecting rod is pivotally provided with its lower end on one side of the main handrail frame and extends with a second connecting rod, and the lower end of the second connecting rod is pivotally connected to the front end of a third connecting rod, and the rear end of each third connecting rod is pivotally connected to each of the second pivot ears.

[0013] The above technical solution has the following advantages or beneficial effects:

[0014] In the foldable leg-lifting machine with stable swinging and resistance described in the present invention, the front-to-back alternating leg-lifting movements with resistance can effectively stretch the hip, knee, and ankle joints, and stretch the core muscle groups such as the abdomen and buttocks muscles. It is quick to assemble and low in cost, and easy to sell. Moreover, multiple components can be folded together, thereby reducing the volume of transportation packaging and convenient storage without taking up space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional combination diagram of embodiment 1 of the present invention.

[0016] Figure 2 It is a three-dimensional exploded view of the first embodiment of the present invention.

[0017] Figure 3 It is a rear view of the first embodiment of the present invention.

[0018] Figure 4 It is a folding schematic diagram of the first embodiment of the present invention.

[0019] Figure 5 This is a reference diagram of the usage of the first embodiment of the present invention.

[0020] Figure 6 It is a three-dimensional combination diagram of the second embodiment of the present invention.

[0021] Figure 7 It is a three-dimensional exploded view of the second embodiment of the present invention.

[0022] Figure 8 It is a folding schematic diagram of the second embodiment of the present invention.

[0023] Fig. 9 This is a reference diagram for the use of the second embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Please refer to the attached Figure 1 To Attachment Figure 5 Embodiment 1 of the present invention provides a foldable leg-lifting machine with stable swinging resistance, comprising: A base assembly 10, comprising a first bracket 11, a second bracket 12 and two third brackets 13, wherein the first bracket 11 and the second bracket 12 are respectively fixed with a first crossbar 14 and a second crossbar 15 which can be placed flat on the ground at their lower ends, the first crossbar 14 of the first bracket 11 is pivotally provided with two rollers 18, the upper end of the second bracket 12 is foldably pivoted to the middle section of the first bracket 11, the upper ends of the two third brackets 13 are respectively foldably pivoted to the two sides of the upper end of the first bracket 11, and the lower ends thereof are jointly provided with a horizontal support member 17, in addition, the second bracket 12 is inserted between the two third brackets 13, and the second bracket 12 and the two third brackets 13 are fixed to each other by a first fixing pin 70, and a fixing member 16 is fixedly provided between the two third brackets 13; A main handrail frame 20, including an upper handrail rod 21 and a lower fixing rod 22, which are foldably connected to each other at one end, and the upper handrail rod 21 and the lower fixing rod 22 are fixed to each other by a second fixing pin 80, the other end of the upper handrail rod 21 is provided with a handle 23 and a control panel 24 is provided on the top, and the other end of the lower fixing rod 22 is fixed to the front position of the first bracket 11; The two driving rods 30 are respectively pivoted at one side of the third bracket 13 at the upper end as a rotation fulcrum and swing in a front-back alternating arc track, and a pedal 40 is pivoted at the lower end. In addition, a first pivot ear 31 extends from the upper end of the two driving rods 30; a seat 50 is arranged on the first bracket 11 and close to the upper end of the first bracket 11; a linkage mechanism 60 includes a swing seat 61, two linkage rods 62, and two resistance telescopic cylinders 63, the swing seat 61 is left The two third brackets 13 are symmetrically swingably arranged on the rear side of the fixing member 16, and each of the connecting rods 62 is pivoted at its lower end to the left and right sides of the swing seat 61, and is pivoted at its upper end to the first pivot ear 31 at the upper end of each driving rod 30. Each of the resistance telescopic cylinders 63 is pivoted at its upper end to the left and right sides of the swing seat 61, and a fixing member 64 is fixedly connected between its lower end and the support member 17, so that the two driving rods 30 can swing in a front-rear alternate limiting manner through the swing seat 61.

[0027] The upper end of the first bracket 11 , the upper ends of the two third brackets 13 , and the two driving rods 30 are pivotally disposed with respect to the same axis 111 .

[0028] Secondly, as attached Figure 6 To Attachment Fig. 9In the second embodiment shown, the following components are added: two auxiliary handrail frame groups 90, which are pivotally mounted on two sides of the base group 10, wherein a second pivot ear 32 is extended from the upper end of the two driving rods 30, and the auxiliary handrail frame group 90 further includes a first connecting rod 91, and the first connecting rod 91 is pivotally mounted on one side of the main handrail frame 20 with its lower end and extends to have a second connecting rod 92, the first connecting rod 91 and the second connecting rod 92 are at different angles, and the lower end of the second connecting rod 92 is pivotally connected to the front end of a third connecting rod 93, and the rear end of the third connecting rod 93 is pivotally connected to the second pivot ear 32 at the upper end of the driving rod 30.

[0029] The usage of the present invention is described as follows in conjunction with the above structure:

[0030] Please refer to the attached Figure 1 To Attachment Figure 5 In the first embodiment shown, when used by an athlete, the athlete holds the fixed handle 23 with both hands and steps on the pedal 40 with his feet, and the linkage mechanism 60 on the rear side of the third bracket 13 swings symmetrically left and right, so that the two driving rods 30 swing in an arc trajectory with mutual front-back limit and resistance.

[0031] Please refer to the attached Figure 6 To Attachment Fig. 9 In the second embodiment shown, the auxiliary armrest frame assembly 90 is added to the two sides of the base assembly 10 compared to the first embodiment, so that the first connecting rod 91 is held by both hands and swings along with the swing of the two driving rods 30, so that the athlete can swing the hands and lift the legs with resistance at the same time when using it.

[0032] The beneficial effects of the present invention are: (I) In the first and second embodiments, the alternating leg-lifting movements with resistance can effectively stretch the hip, knee, and ankle joints, and stretch the core muscle groups such as the abdomen and buttocks muscles. (II) In the second embodiment, in addition to maintaining the advantages described in the above paragraph (I), the forearm, upper arm and triceps muscle groups can also be stretched by swinging the hands forward and backward with resistance. (3) There is no complicated magnetic control resistance mechanism and linkage mechanism, the assembly is fast, the assembly and component costs are low, the price of the whole machine is quite competitive, and it is easy to be favored by buyers and consumers. (IV) As attached Figure 4 and attached Figure 8 As shown, by disassembling and assembling the first fixing pin 70 and the second fixing pin 80, the first bracket 11, the second bracket 12, the upper handrail rod 21 and the lower fixing rod 22 can be folded relative to each other. Not only is the folding quick, the seller reduces the volume of shipping packaging materials and the buyer reduces import costs, but the purchaser can also fold it for easy storage without taking up space. (V) Whether in the first or second embodiment, during the actions of alternately raising the legs and alternately swinging the hands back and forth, the two resistance telescopic cylinders 63 provide resistance to the swinging of the two drive rods 30 and the two auxiliary armrest frames 90, making the effect of training the user's body parts more significant.

[0033] As described above, the embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements do not deviate the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

Claims

1. A foldable leg-lifting machine with stable swing and resistance, characterized in that: include: A base assembly, comprising a first bracket, a second bracket and two third brackets, wherein the first bracket and the second bracket are respectively fixed with a first crossbar and a second crossbar which can be placed flat on the ground at their lower ends, the upper end of the second bracket is foldably pivoted to the middle section of the first bracket, the upper ends of the two third brackets are respectively foldably pivoted to two sides of the upper end of the first bracket, and the lower ends thereof are jointly provided with a horizontal support member; A main handrail frame, the lower end of which is fixedly connected to the front section of the first bracket and the upper end of which is provided with a handle; Two driving rods, each having an upper end pivotally mounted on one side of each third bracket as a rotation fulcrum and swinging in a mutually forward and backward arc trajectory, and each having a pedal pivotally mounted on its lower end; A linkage mechanism includes a swing seat, two linkage rods and two resistance telescopic cylinders. The swing seat is pivoted on the rear side of the two third brackets in a symmetrical swinging manner. Each linkage rod is pivoted at its lower end to the left and right sides of the swing seat, and is pivoted at its upper end to the upper end of each driving rod. Each resistance telescopic cylinder is pivoted at its upper end to the left and right sides of the swing seat, and its lower end is fixed to the support member by a fixing member, so that the two driving rods are swinging in a front-rear interactive limited manner by the swing seat.

2. The foldable leg-lifting machine with stable swing and resistance according to claim 1, characterized in that: The first bracket, the two third brackets and the two driving rods are pivotally arranged with each other around the same axis.

3. The foldable leg-lifting machine with stable swing and resistance according to claim 1, characterized in that: The second bracket is inserted between the two third brackets, and the second bracket and the two third brackets are fixed to each other by a first fixing pin.

4. The foldable leg-lifting machine with stable swing and resistance according to claim 1, characterized in that: The first bracket is provided with a seat.

5. The foldable leg-lifting machine with stable swing and resistance according to claim 1, characterized in that: The main handrail frame includes an upper handrail rod and a lower fixed rod which are pivotally connected to each other in a foldable manner at one end, and the upper handrail rod and the lower fixed rod are fixed to each other by a second fixed pin. The upper handrail rod is provided with the handle, and the other end of the lower fixed rod is fixed to the front section position on the first bracket.

6. The foldable leg-lifting machine with stable swing and resistance according to claim 1, characterized in that: A control panel is arranged on the top of the main armrest frame, and two rollers are pivotally arranged on the first crossbar of the first bracket.

7. The foldable leg-lifting machine with stable swing and resistance according to claim 1, characterized in that: A fixing piece is fixed between the second and third brackets, and the swing seat is pivoted on the fixing piece with a center point to swing symmetrically left and right.

8. The foldable leg-lifting machine with stable swing and resistance according to claim 1, characterized in that: A first pivot ear is extended from the upper end of the driving rod, and the first pivot ear is pivotally connected to the upper end of the linkage rod.

9. The foldable leg-lifting machine with stable swing and resistance according to claim 1, characterized in that: A second pivot ear is extended from the upper end of the second driving rod, and a secondary handrail frame group is pivotally provided on both sides of the base group. The secondary handrail frame group includes a first connecting rod, and the first connecting rod is pivotally provided with a second connecting rod at its lower end on one side of the main handrail frame, and the lower end of the second connecting rod is pivotally connected to the front end of a third connecting rod, and the rear end of each third connecting rod is pivotally connected to each of the second pivot ears.

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