A sitting leg extension training device

Abstract

The utility model relates to the technical field of fitness equipment, a seated leg extension trainer, and the utility model provides the following technical solutions: comprising a main frame, a seat back assembly and a leg extension movable assembly; the leg extension movable assembly is connected to a counterweight mechanism through a rope and chain transmission system, the rope and chain transmission system comprises a main motion disk, the main motion disk is rotatably connected to the main frame and connected to the leg extension movable assembly, and the main motion disk is driven to reciprocate through the leg extension movable assembly, thereby driving the counterweight mechanism to move. The utility model provides a seated leg extension trainer, provides a new structural form, has a strong sense of motion process, is convenient for customers to choose, and is conducive to the healthy development of the industry.

Description

Technical Field

[0001] The utility model belongs to the technical field of fitness equipment, in particular to a sitting leg stretching training device. Background Art

[0002] The seated leg extension trainer is a fitness equipment for exercising leg muscles. In the prior art, for example, patent CN209500666U discloses a leg extension trainer. Leg extension training mostly uses bell plates as loads. The bell plates are generally directly set on the foam shaft connecting frame, and the sense of exercise process may be poor. Some use air resistance as load. For example, CN209500667U discloses an intelligent adjustable air resistance leg extension training fitness equipment. From the perspective of the prior art, there are relatively few structural forms of leg extension trainers, and innovation and design are needed, which is beneficial to the industry development of this fitness equipment and also beneficial to customer selection. Utility Model Content

[0003] The utility model provides a sitting leg stretching training device, which can solve the problems pointed out in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: including a main frame, a seat assembly and a leg extension movable assembly; the leg extension movable assembly is connected to a counterweight mechanism through a rope and chain transmission system, and the rope and chain transmission system includes a main motion disk, and the main motion disk is rotatably connected to the main frame and connected to the leg extension movable assembly, and is driven to reciprocate through the leg extension movable assembly, thereby driving the counterweight mechanism to move.

[0005] Preferably, the leg extension activity assembly comprises a connecting frame and a shaft rod, one end of the connecting frame is connected to the shaft rod, and the other end is connected to the main motion disk.

[0006] Preferably, the shaft is a foam shaft.

[0007] Preferably, the rope and chain transmission system is a chain transmission system, and the main moving disk is a main transmission chain disk.

[0008] Preferably, the chain transmission system also includes a passive chain disc and a chain retractable disc coaxially arranged with the passive chain disc, the passive chain disc and the chain retractable disc are coaxially rotatably connected to the main frame, a first transmission chain is arranged between the main transmission chain disc and the passive chain disc, and a second transmission chain is arranged between the chain retractable disc and the counterweight mechanism.

[0009] Preferably, the counterweight mechanism is a selection plate counterweight mechanism, which includes a stand, a selection plate counterweight and a sliding optical axis.

[0010] Preferably, the seat assembly includes a seat cushion and a back cushion.

[0011] Beneficial effects: The utility model provides a sitting leg extension trainer, provides a new structural form, has a strong sense of exercise process, is convenient for customers to choose, and is conducive to the healthy development of the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a side schematic diagram of the utility model;

[0014] Description of reference numerals:

[0015] The numbers in the figure are: main frame 1; main moving disk 21; first transmission chain 22; passive chain disk 23; chain retracting disk 24; second transmission chain 25; connecting frame 31; shaft rod 32; stand 41; optional weight plate 42; sliding optical axis 43; seat cushion 51; back cushion 52. DETAILED DESCRIPTION

[0016] A specific implementation mode of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0017] Embodiment 1:

[0018] like Figure 1-2 A seated leg extension trainer comprises a main frame 1, a seat assembly and a leg extension movable assembly; the seat assembly comprises a seat cushion 51 and a back cushion 52, the leg extension movable assembly is connected to a counterweight mechanism via a rope and chain transmission system, the rope and chain transmission system comprises a main motion disk 21, the main motion disk 21 is rotatably connected to the main frame 1 and connected to the leg extension movable assembly, and is driven to reciprocate through the leg extension movable assembly, thereby driving the counterweight mechanism to move.

[0019] Specifically, the leg extension activity assembly includes a connecting frame 31 and a shaft rod 32. One end of the connecting frame 31 is connected to the shaft rod 32, and the other end is connected to the main motion disk 21. The shaft rod 32 is a foam shaft rod.

[0020] Specifically, the rope and chain transmission system is a chain transmission system, the main motion disk 21 is a main transmission chain disk, and the chain transmission system also includes a passive chain disk 23 and a chain take-up and release disk 24 coaxially arranged with the passive chain disk 23, the passive chain disk 23 and the chain take-up and release disk 24 are coaxially rotatably connected to the main frame 1, a first transmission chain 22 is arranged between the main transmission chain disk and the passive chain disk 23, a plurality of auxiliary small sprockets are arranged on the first transmission chain 22, and a second transmission chain 25 is arranged between the chain take-up and release disk 24 and the counterweight mechanism.

[0021] Specifically, the weight balancing mechanism is a selection plate weight balancing mechanism, which includes a stand 41 , a selection plate weight balancing plate 42 and a sliding optical axis 43 , and the second transmission chain 25 is connected to the head plate of the selection plate weight balancing plate 42 .

[0022] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A sitting leg stretching training device, comprising a main frame (1), a seat component and a leg stretching activity component; characterized in that: The leg extension activity component is connected to the counterweight mechanism via a rope and chain transmission system, wherein the rope and chain transmission system comprises a main motion disk (21), wherein the main motion disk (21) is rotatably connected to the main frame (1) and is connected to the leg extension activity component, and is driven to reciprocate through the leg extension activity component, thereby driving the counterweight mechanism to move.

2. A sitting leg stretching trainer according to claim 1, characterized in that: The leg extension activity assembly comprises a connecting frame (31) and a shaft rod (32); one end of the connecting frame (31) is connected to the shaft rod (32), and the other end is connected to the main motion disk (21).

3. A sitting leg stretching trainer according to claim 2, characterized in that: The shaft (32) is a foam shaft.

4. A sitting leg stretching trainer according to claim 2, characterized in that: The rope and chain transmission system is a chain transmission system, and the main motion disc (21) is a main transmission chain disc.

5. A sitting leg stretching trainer according to claim 4, characterized in that: The chain transmission system further comprises a passive chain disc (23) and a chain retracting disc (24) coaxially arranged with the passive chain disc (23); the passive chain disc (23) and the chain retracting disc (24) are coaxially rotatably connected to the main frame (1); a first transmission chain (22) is arranged between the main transmission chain disc and the passive chain disc (23); and a second transmission chain (25) is arranged between the chain retracting disc (24) and the counterweight mechanism.

6. A sitting leg extension training device according to claim 5, characterized in that: The weight balancing mechanism is a selection plate weight balancing mechanism, which comprises a stand (41), a selection plate weight balancing plate (42) and a sliding optical axis (43).

7. A sitting leg stretching trainer according to any one of claims 1 to 5, characterized in that: The seat support assembly comprises a seat cushion (51) and a back cushion (52).

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