A kind of anti-myopia mechanism for children
A technology for preventing myopia and children, which is applied to other seating furniture, home appliances, school benches, etc., can solve problems such as improper sitting posture and incorrect distance, and achieve the effect of improving interest.
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Embodiment 1
[0023] Such as figure 1 and figure 2 As shown, a child anti-myopia mechanism includes a chin rest 1, a fixed seat 5 and a connecting rod 3 for connecting the chin rest 1 to the fixed seat 5, and the fixed seat 5 is also provided with a rod seat 4. The rod 3 is hingedly connected with the rod base 4, the upper end of the connecting rod 3 is provided with an external thread, the chin rest 1 is threadedly connected to the upper end of the connecting rod 3, and the external thread section of the connecting rod 3 is also threaded with an adjusting bolt 2;
[0024] The fixed seat 5 includes a seat body 51 and a movable baffle 53, the seat body 51 is groove-shaped, and at least one fastening screw 6 is threaded on any side of the seat body 51, and the fastening screw 6. One end extending into the seat body 51 is provided with an anti-slip top 61. The position of the movable baffle 53 can be adjusted in the groove width direction of the seat body 51. The end of the fastening screw 6...
Embodiment 2
[0027] The present embodiment is further limited on the basis of embodiment 1, as figure 1 and figure 2 As shown, as a structural form that is easy to adjust the position of the movable baffle 53, the base 51 is also provided with at least two strip-shaped adjustment grooves 52, and each adjustment groove 52 is provided with an adjustment Screws, the threaded sections of the adjusting screws are all threaded on the movable baffle 53, and the groove width of the adjusting groove 52 is smaller than the diameter of the top cap of the adjusting screw.
[0028] In order to facilitate the rotation of the braking fastening screw 6 , a handwheel 7 is fixedly connected to one end of the fastening screw 6 outside the seat body 51 .
[0029] In order to avoid the thread at the end of the threaded section of the fastening screw 6 from being damaged under external force, the end of one end of the fastening screw 6 extending into the seat body 51 is a smooth section with a diameter smalle...
Embodiment 3
[0032] This embodiment is further limited on the basis of any one of the solutions provided in the above embodiments. In order to enable the present invention to be self-installed or detached for children with little strength, and at the same time to facilitate the stability of the fixation of the present invention, the fastening screw The thread on the 6 is a fine thread.
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