One-key linkage backrest folding mechanism and backrest folding method thereof
A technology of backrest and key connection, which is applied in the field of linkage retractable backrest mechanism and its retractable backrest, which can solve the problem that the backrest cannot be automatically folded.
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Embodiment 1
[0031]One-button linkage retractable backrest mechanism, including cart front wheel 1, cart rear wheel 2, front wheel connecting rod 3, rear wheel connecting rod 4, first push rod 5, second push rod 6, first linkage support rod 7. Support the backrest 8 and the backrest locking member 9. There are two front wheels 1, front wheel connecting rods 3, rear wheels 2 and rear wheel connecting rods 4 of the cart, and two of the carts The front wheels 1 are respectively driven and connected to the bottom ends of the two front wheel connecting rods 3, and the two cart rear wheels 2 are driven and connected to the bottoms of the two rear wheel connecting rods 4. The two rear wheel connecting rods 4 are arranged on both sides and the top of the single front wheel connecting rod 3 on the same side is connected to the top of the single rear wheel connecting rod 4. When the equipment is folded and stored, the front wheel connecting rod 3 can Rotate toward the direction of the rear wheel con...
Embodiment 2
[0038] The method of retracting the backrest by one-button linkage retracting the backrest mechanism includes the following steps:
[0039] Step 1. During the use of the present invention, when the user needs to fold the whole device in half, the user only needs to open the lock of the whole device, and then push the first push rod 5 to bend, so that the second push rod 6, The front wheel connecting rod 3, the first interlocking supporting rod 7 and the second interlocking supporting rod 41 are folded towards the position of the rear wheel connecting rod 4 at the same time, and the first transmission cable 91 is driven by the pulling of the driving supporting rod 61. The backrest locking part 9 is released, and the supporting backrest 8 is in a relaxed state at this time, and rotates to the position of the rear wheel connecting rod 4 under the pull of the first transmission cable 91, thereby realizing that the cart can be folded as a whole in one step ;
[0040] Step 2. When ...
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