Folding type leg lifting machine with resistance linkage mechanism

Abstract

The invention discloses a folding type leg lifting machine with a resistance linkage mechanism, which consists of a base group, a main armrest frame, two driving rods, a fixed pulley and two resistance telescopic cylinders, and is characterized in that the base group comprises a first bracket, a second bracket and a third bracket which can be mutually folded and pivoted; the main armrest frame is fixedly connected to the front section position of the first support, the two driving rods are arranged on the two sides of the first support in a pivoted mode through the upper ends to serve as rotating fulcrums and swing in a front-back interactive arc-shaped track mode, the lower ends of the driving rods are each provided with a pedal in a pivoted mode, and the fixed pulley is arranged on the third support in a pivoted mode and allows a cable to be wound around. The two ends of the cable are connected to the upper ends of the two driving rods respectively, the lower ends of the two resistance telescopic cylinders are pivoted to the left side and the right side of the third support respectively, and the upper ends of the two resistance telescopic cylinders are pivoted to the upper ends of the driving rods respectively. Therefore, not only are folding and leg-lifting fitness functions achieved, but also the two driving rods have an interactive limiting resistance swing effect by means of the two resistance telescopic cylinders and the cable.

Description

Technical Field

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

[0002] TWI860155B discloses a foldable leg-lifting machine, comprising a base group, a main armrest frame, two driving rods and a linkage mechanism, wherein the base group comprises a first bracket, a second bracket, and two third brackets which are pivotally arranged to be foldable with each other, and the main armrest frame is fixedly connected to the front section of the first bracket, and the two driving rods are respectively pivotally arranged at one side of each third bracket with their upper ends as rotation fulcrums and swing in an alternating arc trajectory back and forth, wherein the linkage mechanism comprises a swing seat and two linkage rods, the swing seat is pivotally arranged at the rear side of the two third brackets in a left-right symmetrical swinging manner, and each linkage rod is pivotally connected at its lower end to the left and right sides of the swing seat, and is pivotally connected at its upper end to the upper end of each driving rod, so that the two driving rods are swing in an alternating front-back limited manner through the swing seat. However, it has the following disadvantages: (1) The upper ends of the two third brackets are foldably pivoted on the two sides of the upper end of the first bracket, and 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 fixing pin. (2) The upper handrail rod and the lower fixing rod are foldably pivoted to each other, and the upper handrail rod and the lower fixing rod are fixed to each other by a fixing pin. Therefore, the above (1) and (2) lead to an overly complicated folding mechanism, which not only takes a long time to fold or unfold the machine, but also has many folding parts to achieve the folding function and the cost is too high. (3) Since the swing seat of the linkage mechanism swings symmetrically, the swing angle of the swing seat is very small. Therefore, the two driving rods are also restricted by the swing connection of the swing seat, which also reduces the swing amplitude of the arc trajectory. (4) There is no resistance effect when swinging, and buyers and users think that it is monotonous and has no fitness effect. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a foldable leg lift machine with a resistance linkage mechanism, which mainly solves the technical problems that the folding components of the existing leg lift machines are too complicated, resulting in high costs and no resistance effect when used.

[0004] To achieve the above object, the present invention is achieved through the following technical solutions: A foldable leg-lifting machine with a resistance linkage mechanism, comprising: A base assembly, comprising a first bracket, a second bracket and a third bracket, 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, and the upper end of the third bracket is fixed to the upper end of the first bracket; 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 of which has an upper end pivotally mounted on two sides of the upper section of the first bracket as a rotation fulcrum, and swings in a front-back alternating arc track, and each of which has a pedal pivotally mounted on its lower end; A fixed pulley is pivotally mounted on the front side of the third bracket and is used for winding a cable, wherein the two ends of the cable are respectively connected to the upper ends of the driving rods; The two resistance telescopic cylinders are pivotally connected at their lower ends to the left and right sides of the third bracket respectively, and are pivotally connected at their upper ends to the upper ends of the driving rods, so that the two driving rods are swung in an alternating and limited manner through the two resistance telescopic cylinders and cables.

[0005] Furthermore, the first bracket is provided with a seat.

[0006] Furthermore, the crossbar of the first bracket is pivotally provided with two rollers.

[0007] 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 fixing pin. The upper armrest rod is provided with the handle, and the other end of the lower fixed rod is fixed to the front section of the first bracket.

[0008] Furthermore, a control panel is arranged on the top of the main handrail frame.

[0009] Furthermore, each of the two sides of the first bracket has a pivoting member, and the upper end of the driving rod is pivoted by the pivoting member.

[0010] 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 resistance telescopic cylinder.

[0011] Furthermore, a third pivot ear extends from the upper end of the driving rod, and the third pivot ear is connected to one end of the cable.

[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 a resistance linkage mechanism described in the present invention, the resistance force of the two resistance telescopic cylinders is utilized to make the front and rear alternating leg-lifting movements more effective in training and stretching the hip, knee, and ankle joints, and stretching the core muscle groups such as the abdomen and buttocks muscles. The folding components are simple, which can reduce the volume of transportation packaging materials and facilitate storage without taking up space, thereby reducing the cost of the entire machine and making it easy to sell. 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 partial enlarged view of the first embodiment of the present invention.

[0019] Figure 5 It is a partial enlarged view from another angle of the first embodiment of the present invention.

[0020] Figure 6 It is a folding schematic diagram of the first embodiment of the present invention.

[0021] Figure 7 This is a reference diagram of the usage of the first embodiment of the present invention.

[0022] Figure 8 It is a three-dimensional combination diagram of the second embodiment of the present invention.

[0023] Fig. 9 It is a three-dimensional exploded view of the second embodiment of the present invention.

[0024] Fig.10 It is a partial enlarged view of the second embodiment of the present invention.

[0025] Fig.11 It is a folding schematic diagram of the second embodiment of the present invention.

[0026] Fig.12 This is a reference diagram for the use of the second embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] 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.

[0029] Please refer to the attached Figure 1 To Attachment Figure 7 Embodiment 1 of the present invention provides a foldable leg-lifting machine with a resistance linkage mechanism, comprising: A base assembly 10, comprising a first bracket 11, a second bracket 12 and a third bracket 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 end of the third bracket 13 is fixed to the upper end of the first bracket 11, and the lower end thereof is placed on the ground; A main handrail frame 20, including an upper handrail rod 21 and a lower fixed rod 22, which are pivotally connected by folding their ends, and the upper handrail rod 21 and the lower fixed rod 22 are fixed to each other by a 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 fixed rod 22 is fixed to the front position of the first bracket 11; Two driving rods 30, each with its upper end pivotally mounted on two sides of the upper section of the first bracket 11 as a rotation fulcrum, and swinging in a front-back alternating arc track, and a pedal 40 is pivotally mounted on the lower end thereof, and a first pivot ear 31 and a third pivot ear 33 are extended from the upper end of the two driving rods 30; a seat 50, disposed on the first bracket 11 and close to the upper end of the first bracket 11; a fixed pulley 60, pivotally disposed on the front side of the third bracket 13, and for a cable 61 to be wound around, the cable 61 having two ends respectively connected to the third pivot ears 33 of each of the driving rods 30; The two resistance telescopic cylinders 70 are pivotally connected at their lower ends to the left and right sides of the third bracket 13 respectively, and are pivotally connected at their upper ends to the first pivot ears 31 at the upper ends of the driving rods 30, so that the two driving rods 30 can swing in an alternating and limited manner through the two resistance telescopic cylinders 70 and the cables 61.

[0030] The first bracket 11 has two sides each having a pivoting member 111 , and the upper end of the driving rod 30 is pivotally mounted via the pivoting member 111 .

[0031] Secondly, as attached Figure 8 To Attachment Fig.12 In 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 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, and 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.

[0032] The usage of the present invention is described as follows in conjunction with the above structure:

[0033] Please refer to the attached Figure 1 To Attachment Figure 7 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. By means of the fixed pulley 60, the cable 61 and the two resistance telescopic cylinders 70 on the third bracket 13, the two driving rods 30 are swung in an arc trajectory with limited forward and backward interaction and resistance force, so that the legs can be lifted and swung interactively.

[0034] Please refer to the attached Figure 8 To Attachment Fig.12 The second embodiment shown in the figure adds the auxiliary armrest frame group 90 on both sides of the base group 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 when the athlete uses it, in addition to the interactive leg-lifting and swinging of the legs, the hands can also obtain interactive forward and backward swings.

[0035] The beneficial effects of the present invention are: (i) When performing the alternating leg-lifting movement, the present invention utilizes the resistance force of the two resistance telescopic cylinders 70, which not only makes the two driving rods 30 and the auxiliary armrest frame assembly 90 swing gently and smoothly, but also can further effectively train and 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 (I) above, the alternating forward and backward swinging of the hands can also be used to stretch the forearms, upper arms, triceps and other muscle groups with resistance. (iii) Since the resistance telescopic cylinder 70 telescopes up and down almost in a straight line, directly pulling the driving rod 30 of the resistance telescopic cylinder 70 can further expand and lengthen the arc trajectory of the swing. (iv) The linkage mechanism composed of the two driving rods 30, the fixed pulley 60 and the two resistance telescopic cylinders 70 is simpler; at the same time, the length of the third bracket 13 can be shortened, so that the third bracket 13 and the second bracket 12 do not need to be folded with each other. In this way, the assembly can be quick, the assembly and component costs are reduced, and the cost and price of the whole machine are quite competitive, which is easily favored by buyers and consumers. (V) As attached Figure 6 , Attachment Fig.11 As shown, it is only necessary to quickly fold the first bracket 11 and the second bracket 12, the upper handrail rod 21 and the lower fixing rod 22 relative to each other. The folding method is simpler, which not only reduces the volume of shipping packaging materials for the seller and the import cost for the buyer, but also makes it easier for the purchaser to store it.

[0036] 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 a resistance linkage mechanism, characterized in that: include: A base assembly, comprising a first bracket, a second bracket and a third bracket, 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, and the upper end of the third bracket is fixed to the upper end of the first bracket; 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 of which has an upper end pivotally mounted on two sides of the upper section of the first bracket as a rotation fulcrum, and swings in a front-back alternating arc track, and each of which has a pedal pivotally mounted on its lower end; A fixed pulley is pivotally mounted on the front side of the third bracket and is used for winding a cable, wherein the two ends of the cable are respectively connected to the upper ends of the driving rods; The two resistance telescopic cylinders are pivotally connected at their lower ends to the left and right sides of the third bracket respectively, and are pivotally connected at their upper ends to the upper ends of the driving rods, so that the two driving rods are swung in an alternating and limited manner through the two resistance telescopic cylinders and cables.

2. The foldable leg-lifting machine with a resistance linkage mechanism according to claim 1, characterized in that: The first bracket is provided with a seat.

3. The foldable leg-lifting machine with a resistance linkage mechanism according to claim 1, characterized in that: The crossbar of the first bracket is pivotally provided with two rollers.

4. The foldable leg-lifting machine with a resistance linkage mechanism 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 fixing 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 of the first bracket.

5. The foldable leg-lifting machine with a resistance linkage mechanism according to claim 1, characterized in that: A control panel is arranged on the top of the main handrail frame.

6. The foldable leg-lifting machine with a resistance linkage mechanism according to claim 1, characterized in that: The two sides of the first bracket are each provided with a pivoting member, and the upper end of the driving rod is pivotally arranged by the pivoting member.

7. The foldable leg-lifting machine with a resistance linkage mechanism 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 resistance telescopic cylinder.

8. The foldable leg-lifting machine with a resistance linkage mechanism according to claim 1, characterized in that: A third pivot ear is extended from the upper end of the driving rod, and the third pivot ear is connected to one end of the cable.

9. The foldable leg-lifting machine with a resistance linkage mechanism 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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