TWI848846B - Frame Leg Raise Machine - Google Patents

Abstract

A frame-type leg-lifting machine includes a main frame in a square shape, and two driving rods, a transmission assembly, two swing assemblies, and a linkage assembly assembled in the main frame, wherein the main frame includes a lower frame, an upper support frame, and two vertical frames connected to the front and rear sides of the lower frame and the upper support frame, and each driving rod has a pedal at its lower end and is connected to each of the upper ends of the rear side of the main frame. When the two driving rods swing, the two swinging assemblies and the linkage assembly swing simultaneously, and the two swinging assemblies then rotate the transmission assembly; thereby, the athlete enters the main frame from the rear side of the frame-type leg-lifting machine and performs the leg-lifting and swinging exercise in an arc track with limited forward and backward movement. The frame-type structure is more stable during use and effectively isolates non-users from approaching, thereby increasing the safety of the athlete.

Description

Frame Leg Raise Machine

The present invention relates to a frame-type leg-lifting machine, which refers to a leg-lifting fitness equipment with a frame-shaped structure and capable of performing interactive leg-lifting fitness.

According to the previously applied leg-lifting machine, as shown in the patent certificate numbers M469091, I573614, and I766793, it generally includes a base, a front handlebar bracket, a seat frame, a driving mechanism, a magnetically controlled 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 seat frame and the other end of which is hinged with two pedals. A sprocket and a chain are respectively assembled between the two sides of the seat frame and one end of the two actuating rods. The magnetically controlled resistance mechanism can be driven unidirectionally by the sprocket and generate a resistance, and the linkage mechanism allows the two actuating rods to swing in opposite directions. However, it has the following disadvantages: (1) The cost of the chain and sprocket is too high, and it takes time to adjust and calibrate the smooth rotation, resulting in a long assembly time and high cost of the whole machine. (2) As shown in the patent certificate numbers M469091 and I573614, the magnetic resistance mechanism is a two-way direct induction eddy current type and has no inertia, so athletes are not used to using it. (3) The structure design of the machine is too flat and narrow, and it is easy to fall to the left or right when losing balance during leg lifting exercises, and when non-users approach, they are easily hit by the athlete's leg lifting action, which is quite dangerous.

Therefore, how to use new structural forms to truly improve the above shortcomings and conduct research and development of improved structures is indeed a goal that the relevant industries need to work hard on.

In view of the high cost of using chains and sprockets for leg lift machines, and the time-consuming calibration and adjustment for smooth rotation, the assembly time is long, resulting in high cost of the whole machine, and the bidirectional eddy current and non-inertial magnetic resistance mechanism makes users unaccustomed to using it, making it difficult to sell, and it is dangerous to operate.

The present invention provides a frame-type leg-lifting machine, comprising: a main frame, which includes a lower frame, an upper support frame, and two vertical frames connected to the front and rear sides between the lower frame and the upper support frame, a second front frame and a third front frame are connected horizontally between the two front vertical frames, and the upper support frame is connected to an armrest frame upward; two driving rods, which have upper and lower ends, a pivot portion extending from one side of the upper end, and a pedal pivoted on the lower end, so that the upper ends of the driving rods pivot on the vertical frames on the rear side of the main frame as rotation fulcrums and swing in the main frame in a forward and backward alternating arc trajectory; a transmission assembly, which includes A central shaft, a first umbrella-shaped gear, and a second umbrella-shaped gear, the second umbrella-shaped gear is pivoted on the rear side of the second front bracket, the two ends of the central shaft are respectively pivoted on the two front side frames and axially penetrate the first umbrella-shaped gear, the first umbrella-shaped gear is geared with the second umbrella-shaped gear; two swinging components, which at least include A rear swing rod and a front pivot, the upper end of the rear swing rod is pivoted to the pivot of each driving rod on the same side, and the lower end is pivoted to one end of the front pivot, and the other end of the front pivot is axially pivoted to the spindle; a linkage assembly is connected to the main frame at one end and connected to the pivot at the upper end of the two driving rods at the other end.

The utility model has the following advantages: the linkage mechanism is quick and easy to assemble, the components and assembly cost are low, it is not easy to be damaged and is easy to maintain, and the frame structure of the main frame can be more stable and not fall over when used by athletes, and can effectively isolate non-users from approaching, so as to increase the safety of the machine when in use.

[The present invention]

10: Main frame

11: Lower frame

12: Upper support frame

13: Stand

131: Ear

14: Stand

15: Handrails

16: First front bracket

17: Second front bracket

18: Third front bracket

20: Driving rod

201: Top

202: Lower end

203: Joint

30: Pedal

40: Linkage components

41: Swinging seat

42: Linkage rod

43: Rope

44: Fixed pulley

50: Swing assembly

51: Back swing lever

52: Rear hinge connector

53: Downswing lever

54: Front hinge connector

60: Transmission components

61: Axis

62: First umbrella gear

63: Second umbrella gear

70: Magnetic resistance mechanism

71:Pulley

72: Rotating wheel

73: Magnetic control wheel

74: Magnetic seat

75: Drive belt

80: Lifting mechanism

81: Lifting frame

82: Rotating wheel

83: Lifter

90: Swing the grip

91: Linkage rod

Figure 1 is a three-dimensional combination diagram of the first embodiment of the present invention.

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

Figure 3 is a partially enlarged perspective view of the first embodiment of the present invention.

Figure 4 is a three-dimensional combination diagram of the second embodiment of the present invention.

Figure 5 is a three-dimensional combination diagram from another viewing angle of the second embodiment of the present invention.

Figure 6 is a three-dimensional exploded view of the second embodiment of the present invention.

Figure 7 is a partially enlarged perspective view of the second embodiment of the present invention.

Figure 8 is a schematic diagram of the use of the second embodiment of the present invention.

Figure 9 is a three-dimensional combination diagram of the third embodiment of the present invention.

Figure 10 is a three-dimensional combination diagram from another viewing angle of the third embodiment of the present invention.

Figure 11 is a three-dimensional exploded view of the third embodiment of the present invention.

Figure 12 is a schematic diagram of the use of the third embodiment of the present invention.

In order to enable the review committee to have a further understanding and recognition of the purpose, features and effects of the present invention, the following embodiments are listed in conjunction with the [Simple Description of Figures] and described in detail as follows: First, as shown in Figures 1 to 3 of the first embodiment and in conjunction with Figure 7, the present invention is a frame-type leg raising machine, including: A main frame 10, which includes a lower bottom frame 11, an upper support frame 12, and each connected to the lower bottom frame 11 and the upper support frame The upper support frame 12 has two vertical frames 13 and 14 on the front and rear sides, and the vertical frame 13 further includes a hinge 131. The upper support frame 12 is connected to a handrail frame 15 upwardly. A first front bracket 16, a second front bracket 17, and a third front bracket 18 are fixedly connected between the two vertical frames 13 on the front side. The two drive rods 20 have upper and lower ends 201 and 202. A hinge portion 203 extends from one side of the upper end 201, and the lower end 202 is hinged. A pedal 30 is provided, and the upper end 201 is pivoted on each stand 14 at the rear side of the main frame 10 as a rotation fulcrum and swings in a front-back alternating arc track in the main frame 10; a linkage assembly 40 includes a swing seat 41 and two connecting rods 42, the swing seat 41 is pivoted on the first front bracket 16 in a left-right symmetrical swinging manner, and each connecting rod 42 is pivoted at its front end to the left and right sides of the swing seat 41, and at its rear end to each The pivoting portion 203 of the driving rod 20 enables the two driving rods 20 to be swung in a front-back alternately limited manner through the swing seat 41; a transmission assembly 60 is arranged at the front side of the main frame 10, and includes a spindle 61, a first umbrella-shaped gear 62, and a second umbrella-shaped gear 63. The two ends of the spindle 61 are respectively pivoted on the hinge ears 131 and axially penetrate the first umbrella-shaped gear 62. The first umbrella-shaped gear 62 is geared with the second umbrella-shaped gear 63. The second umbrella-shaped gear 63 is pivoted on the rear side of the second front bracket 17; the two swing assemblies 50 each include a rear swing rod 51, a rear pivot 52, a lower swing rod 53, and a front pivot 54, wherein each rear pivot 52 is pivoted on one side of each stand 14, and the upper end of the rear swing rod 51 is pivoted to the pivot portion 203 of the drive rod 20 and the lower end is pivoted to one end of the rear pivot 52, and the other end of the rear pivot 52 is pivoted to the front pivot The rear end of the lower swing rod 53 and the front end of the lower swing rod 53 are pivotally connected to one end of the front pivot member 54, and the other end of the front pivot member 54 is axially pivoted to the spindle 61; a magnetic control resistance mechanism 70 is arranged at the front side of the main frame 10, and is linked to the second umbrella-shaped gear 63 and provides resistance to the second umbrella-shaped gear 63. The magnetic control resistance mechanism 70 includes at least a belt pulley 71, a rotating wheel 72, a magnetic control wheel 73, and a The magnetic base 74 is arranged on both sides of the periphery of the magnetic control wheel 73, wherein the magnetic control wheel 73 is pivoted on the rear side of the third front bracket 18, the magnetic base 74 is fixedly connected to the rear side of the second front bracket 17, the belt pulley 71 is pivoted on the front side of the second front bracket 17 and rotates synchronously with the second umbrella-shaped gear 63 on the same axis, and is wrapped with a transmission belt 75 together with the rotating wheel 72, and the rotating wheel 72 is pivoted on the front side of the third front bracket 18 and is connected to the second umbrella-shaped gear 63. The magnetically controlled wheel 73 rotates synchronously with the same axis; a lifting mechanism 80 is linked to the main frame 10 to lift and lower, thereby changing different tilt angles, wherein the lifting mechanism 80 includes a lifting frame 81, two rotating wheels 82, and a lifter 83. The lifting frame 81 is pivoted to the main frame 10 at one end and the two rotating wheels 82 are pivoted at the other end. The lifter 83 is pivoted between the main frame 10 and the lifting frame 81 at two ends.

Secondly, the second embodiment shown in Figures 4 to 8 and in conjunction with Figure 3 is different from the first embodiment in that: the second embodiment adds two swing handles 90, which are pivotally arranged on the two sides of the upper support frame 12, and the lower end of each swing handle 90 is pivotally connected to the front end of a connecting rod 91, and the rear end of the connecting rod 91 is pivotally connected to the pivot part 203 of the driving rod 20 on the same side.

Furthermore, as shown in the third embodiment of FIGS. 9 to 12, the present invention is a frame-type leg-lifting machine, comprising: a main frame 10, which includes a lower frame 11, an upper support frame 12, and two vertical frames 13 and 14 connected to the front and rear sides of the lower frame 11 and the upper support frame 12, the vertical frame 13 further including a hinge 131, the upper support frame 1 2 is connected to an armrest frame 15 upward, and a second front frame 17 and a third front frame 18 are fixedly connected between the two vertical frames 13 on the front side; Two driving rods 20 have upper and lower ends 201 and 202, and a pivoting portion 203 extends from one side of the upper end 201, and a pedal 30 is pivoted on the lower end 202, and the upper end 201 is pivoted on the rear side of the main frame 10 Each stand 14 is a rotation fulcrum and swings in an arc track in the main frame 10 in a forward and backward alternating manner; a linkage assembly 40 includes at least four fixed pulleys 44, which are respectively pivoted at the rear positions of the two sides of the lower frame 11. At the same time, the pivoting parts 203 of the two driving rods 20 and the four fixed pulleys 44 are jointly wrapped with a rope 43; a transmission assembly 60 is set at the The main frame 10 is provided with a central shaft 61, a first umbrella-shaped gear 62, and a second umbrella-shaped gear 63. The two ends of the central shaft 61 are respectively pivoted on the hinges 131 and axially penetrate the first umbrella-shaped gear 62. The first umbrella-shaped gear 62 is geared with the second umbrella-shaped gear 63. The second umbrella-shaped gear 63 is pivoted on the rear side of the second front bracket 17. The second swinging assembly Each swing assembly 50 includes at least one rear swing rod 51 and a front pivot member 54. One end of the rear swing rod 51 is pivotally connected to the pivot portion 203 of the same side driving rod 20, and the other end is pivotally connected to one end of the front pivot member 54. The other end of the front pivot member 54 is axially pivoted to the spindle 61. A magnetically controlled resistance mechanism 70 is arranged on the front side of the main frame 10 and is controlled by The magnetic control resistance mechanism 70 is connected to the second umbrella-shaped gear 63 and provides resistance to the second umbrella-shaped gear 63. The magnetic control resistance mechanism 70 includes at least a pulley 71, a rotating wheel 72, a magnetic control wheel 73, and a magnetic base 74 on both sides of the periphery of the magnetic control wheel 73. The magnetic control wheel 73 is pivoted on the rear side of the third front bracket 18, and the magnetic base 74 is fixed to the The belt pulley 71 is pivoted on the front side of the second front bracket 17 and rotates synchronously with the second umbrella-shaped gear 63 on the same axis, and is wrapped with a transmission belt 75 together with the rotating wheel 72. The rotating wheel 72 is pivoted on the front side of the third front bracket 18 and rotates synchronously with the magnetic control wheel 73 on the same axis; a lifting mechanism 80 is linked The main frame 10 is raised and lowered to change different tilt angles, wherein the lifting mechanism 80 includes a lifting frame 81, two rotating wheels 82, and a lifter 83. The lifting frame 81 is pivoted to the main frame 10 at one end and the two rotating wheels 82 are pivoted at the other end. The lifter 83 is pivoted between the main frame 10 and the lifting frame 81 at two ends.

Based on the above structure and assembly design, the usage of various embodiments of the present invention is described as follows:

(1) As shown in the first embodiment of FIGS. 1 to 3 , when in use, the user holds the handrail 15 with both hands and steps on the pedal 30 with both feet to swing the two driving rods 20. At the same time, the two connecting rods 42 are swung left and right by the connecting assembly 40, so that the two driving rods 20 are swung in an arc-shaped trajectory with a limit position forward and backward relative to each other. When the two driving rods 20 swing, they will also sequentially link the rear swing rod 51, the rear pivot 52, the lower swing rod 53, and the front pivot 54, causing the spindle 61 to rotate repeatedly, and then the first umbrella-shaped gear 62 will rotate accordingly, and sequentially drive the second umbrella-shaped gear 63, the belt pulley 71, the rotating wheel 72, and the magnetic control wheel 73 to rotate. When the magnetic control wheel 73 rotates, the magnetic seat 74 provides magnetic resistance, and finally the resistance is simultaneously provided to the two driving rods 20 in reverse order through the magnetic control wheel 73; in addition, the athlete can control and adjust the lifting mechanism 80 to make the main frame 10 rise and fall, thereby changing different tilt angles.

(2) As shown in Figures 4 to 8, the second embodiment has the same structure as the first embodiment, and two swing handles 90 are added. When in use, the swing handle 90 is held with both hands and the two driving rods 20 are swung by stepping on the pedal 30. When the two driving rods 20 are swung, the two swing handles 90 are also linked to swing back and forth alternately.

(3) As shown in the third embodiment of FIGS. 9 to 12, when in use, the handrail 15 is held with both hands and the pedal 30 is stepped on with the foot. When the two driving rods 20 are swung, the two connecting rods 42 are swung left and right by the connecting assembly 40, so that the two driving rods 20 are swung forward and backward in an arc track with alternating positions; at the same time, when the two driving rods 20 are swung, the rope 43 is pulled around the two pivot parts 203 and the four fixed pulleys 44. The rear swing rod 51 and the front pivot 54 are linked in sequence, so that the spindle 61 rotates repeatedly, and then the first umbrella-shaped gear 62 rotates accordingly, and sequentially drives the second umbrella-shaped gear 63, the belt pulley 71, the rotating wheel 72, and the magnetic control wheel 73 to rotate. When the magnetic control wheel 73 rotates, the magnetic seat 74 provides magnetic resistance, and the resistance is simultaneously provided to the two driving rods 20 in reverse order through the magnetic control wheel 73.

Through the structure of the above-mentioned specific embodiment, the present invention can obtain the following benefits:

(1) The linkage assembly 40 of the connecting rod type or the steel cable type is quick and easy to assemble, not easy to damage and easy to repair, with low component and assembly costs, and the price of the whole machine is quite competitive, which is easily favored by buyers and consumers.

(ii) The consistent magnetic control wheel 73 is matched with the magnetic base 74, which is highly stable and easy to adjust and maintain. The magnetic control wheel 73 has inertia when rotating, which is the exercise mode that athletes are more accustomed to using.

(III) Athletes can enter the main frame 10 from the rear side of the present invention, and the frame structure, such as the lower frame 11 and the upper support frame 12, can be more stable when the athlete lifts his legs alternately without falling to the left or right, and the two vertical frames 13 and 14 on the front and rear sides form a square frame to effectively isolate non-users from approaching, so as to increase the safety of athletes.

(IV) The lifting mechanism 80 raises and lowers the main frame 10 to produce different tilt angles, so that the alternating leg-lifting movements and even the alternating arm-swinging movements can achieve different training intensities for the core muscle groups. The steeper the tilt angle of the main frame 10, the greater the training intensity. Conversely, the flatter the tilt angle, the smaller the training intensity.

In summary, the present invention can effectively solve the shortcomings of knowledge creation and can be easily understood and implemented by ordinary knowledgeable people in the relevant technical field. However, the above is only a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention; that is, all equivalent changes and modifications made according to the scope of the patent application of the present invention should still be within the scope of the patent of the present invention.

10: Main frame

11: Lower frame

12: Upper support frame

13: Stand

131: Ear

14: Stand

15: Handrails

16: First front bracket

17: Second front bracket

18: Third front bracket

20: Driving rod

201: Top

202: Lower end

203: Joint

30: Pedal

40: Linkage components

41: Swinging seat

42: Linkage rod

50: Swing assembly

51: Back swing lever

52: Rear hinge connector

53: Downswing lever

54: Front hinge connector

60: Transmission components

61: Axis

62: First umbrella gear

63: Second umbrella gear

70: Magnetic resistance mechanism

71:Pulley

72: Rotating wheel

73: Magnetic control wheel

74: Magnetic seat

75: Drive belt

80: Lifting mechanism

81: Lifting frame

82: Rotating wheel

83: Lifter

Claims (9)

A frame-type leg-lifting machine comprises: a main frame, which includes a lower frame, an upper support frame, and two vertical frames connected to the front and rear sides between the lower frame and the upper support frame, a second front frame and a third front frame are connected between the two front vertical frames in a horizontal direction, and the upper support frame is connected to an armrest frame upward; two driving rods, which have upper and lower ends, a pivot portion extending from one side of the upper end, and a pedal pivoted on the lower end, so that the upper ends of the driving rods pivot on the vertical frames on the rear side of the main frame as rotation fulcrums and swing in the main frame in a forward and backward alternating arc track; a transmission assembly, which includes a spindle , a first umbrella-shaped gear, and a second umbrella-shaped gear, the second umbrella-shaped gear is pivoted on the rear side of the second front bracket, the two ends of the spindle are respectively pivoted on the two front side frames and axially penetrate the first umbrella-shaped gear, the first umbrella-shaped gear is geared with the second umbrella-shaped gear; the two swinging components include at least one A rear swing rod and a front pivot, the upper end of the rear swing rod is pivoted to the pivot of each driving rod on the same side, and the lower end is pivoted to one end of the front pivot, and the other end of the front pivot is axially pivoted to the spindle; a linkage assembly is connected to the main frame at one end and connected to the pivot of the upper end of the two driving rods at the other end. According to the frame-type leg-lifting machine described in Item 1 of the patent application, the main frame is in a square shape. According to the frame-type leg-lifting machine described in Item 1 of the patent application, a first front bracket is connected between the two front side vertical frames, and the linkage assembly includes a swing seat and two linkage rods. The swing seat is pivotally arranged on the first front bracket in a left-right symmetrical swinging manner. Each linkage rod is pivotally connected to the left and right sides of the swing seat with its front end, and pivotally connected to the pivoting part of the upper end of each driving rod with its rear end, so that the two driving rods are swung alternately forward and backward through the swing seat. According to the frame-type leg-lifting machine described in Item 1 of the patent application, a swing handle is pivoted on each side of the main frame, and the lower end of the swing handle is pivoted to the front end of a connecting rod, and the rear end of the connecting rod is pivoted to the pivot part of the driving rod on the same side. According to the frame-type leg-lifting machine described in Item 1 of the patent application, the two front-side upright frames further include a hinge, and the two ends of the spindle are respectively hinged on each of the hinges. According to the frame-type leg-lifting machine described in item 1 of the patent application, the second umbrella-shaped gear is linked to a magnetically controlled resistance mechanism, and the magnetically controlled resistance mechanism includes at least a pulley, a rotating wheel, a magnetically controlled wheel, and a magnetic seat on both sides of the periphery of the magnetically controlled wheel, wherein the magnetically controlled wheel is pivoted on the rear side of the third front bracket, the magnetic seat is fixed to the rear side of the second front bracket, the pulley is pivoted on the front side of the second front bracket and rotates synchronously with the second umbrella-shaped gear on the same axis, and is wrapped with a transmission belt together with the rotating wheel, and the rotating wheel is pivoted on the front side of the third front bracket and rotates synchronously with the magnetically controlled wheel on the same axis. According to the frame-type leg-lifting machine described in item 1 of the patent application, each swing assembly further includes a rear pivot and a lower swing rod, each rear pivot is pivoted on one side of the rear stand, and the upper end of each rear swing rod is pivoted to the pivot of the drive rod on the same side and its lower end is pivoted to one end of the rear pivot, and the other end of the rear pivot is pivoted to the rear end of the lower swing rod, the front end of the lower swing rod is pivoted to one end of the front pivot, and the other end of the front pivot is axially pivoted to the spindle. According to the frame-type leg-lifting machine described in Item 1 of the patent application, the hinged portion of the upper end of the driving rod is a wheel structure, and the linkage assembly includes at least four fixed pulleys, which are hinged at the rear positions of the two sides of the lower frame. At the same time, the hinged portions of the two driving rods and the four fixed pulleys are wrapped with a rope. According to the frame-type leg-lifting machine described in Item 1 of the patent application, a lifting mechanism is connected to the front part of the bottom of the main frame, and the lifting mechanism is linked to the lifting of the main frame to change different tilt angles. The lifting mechanism includes a lifting frame, two rotating wheels, and a lifter. The lifting frame is hinged to the main frame at one end and the two rotating wheels are hinged at the other end. The lifter is hinged between the main frame and the lifting frame at its two ends.

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