Adjustable supine board
A supine board, adjustable technology, applied in the field of fitness equipment, can solve the problems such as the inability to adjust the height of the foot hook bar, malignant transformation, etc., to achieve the effect of improving comfort and best exercise effect
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Embodiment 1
[0025] refer to figure 1 , is a structural schematic diagram of Embodiment 1 of the present invention, an adjustable sit-up board, at least including a sit-up board 1, a foot support rod 2 and a head support device 3, one end of the sit-up board 1 and a foot support rod 2 Fixedly connected, the lower surface of the other end of the sit-up board 1 is fixedly connected with a head support device 3, which is characterized in that: the middle part of the foot support rod 2 is fixedly connected with a bracket 9 perpendicular to it, and the bracket 9 is located on the sit-up board 1, and forms an angle of 20° to 40° with the sit-up board 1, a chute is provided in the vertical direction on the support 9, and a slide bar 14 is slidably connected in the chute, and the outer wall of the slide bar 14 is also connected to the The foot hook bar 12 outside the chute is fixedly connected with the foot pad bar 13, and the head support device 3 is provided with a lifting device; the sit-up boa...
Embodiment 2
[0028] refer to figure 1 and 3 , is a schematic structural view of Embodiment 2 of the present invention. Compared with Embodiment 1, the difference of this embodiment is that a bracket positioning hole 10 is opened on one side of the chute in the middle section of the rod wall of the bracket 9, and the sliding The bar 14 has a plurality of slide bar positioning holes distributed at intervals along its lengthwise side wall, and the bracket positioning holes 10 are pinned with the slide bar positioning holes by the positioning pin 11 so as to limit the position of the slide bar 14 in the chute of the bracket 9 .
[0029] During actual use: when the foot hook bar 12 and the foot pad bar 13 slide on the bracket 9 through the slide bar 14, when adjusted to a suitable comfort height, pass the positioning pin 11 through the positioning hole 10 and the slide bar on the slide bar 14. Rod positioning holes are used for positioning. Using this positioning method, the positioning is sta...
Embodiment 3
[0031] Compared with Embodiment 2, the difference of this embodiment is that the head support device 3 includes a head support rod 17 supported on the ground, an outer sleeve vertically fixed to the head support rod 17, and an end Socketed in the connecting rod 4 that the other end is fixedly connected with the lower surface of the sit-up board 1 in the outer sleeve, there is a lifting device between the connecting rod 4 and the outer sleeve.
[0032] In actual use: when doing sit-ups, adjust the lifting device of the head according to the height of the center of gravity to adjust the center of gravity of the human body. Adjust the lifting device to lower the head position when the stretching strength is large, that is, the connecting rod 4 is lowered to the lowest in the outer sleeve, and the center of gravity of the human body is also lowered accordingly. The difficulty of doing sit-ups increases, and the stretching strength also increases. Increase, within the lifting range...
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