Automatic door closer structure

Abstract

The invention relates to an automatic door closer structure, which comprises a shell, a sliding set, a transmission set, a piston set and an elastic component. The sliding set is arranged and can move in the middle cavity of the shell, comprising a sliding base, a first trolley wheel and a second trolley wheel, the sliding base is provided with an upper board, a lower board and a slot formed between the upper board and the lower board, the first trolley wheel is arranged and can move in the slot, the second trolley wheel is fixedly arranged in the slot; the transmission set comprises a transmission shaft and an offset cam combined with the transmission shaft, the transmission shaft is hinged in a shaft hole of the shell and penetrates the sliding base, the offset cam is positioned in the slot of the sliding base and is butt connected with the first trolley wheel and the second trolley wheel; the piston set is arranged and can move in the back cavity of the shell, the piston set comprises at least a trunk piston which is provided with a first end part connected with the first trolley wheel; the elastic component is arranged in the front cavity of the shell and is butt connected with the sliding base. The automatic door closer structure provided by the invention can improve the smoothness of the operation.

Description

technical field [0001] The invention relates to a door closer, in particular to an automatic door closer structure which can improve smooth operation. Background technique [0002] The door closer is mainly used to provide a damping effect on the door panel, so that the door panel has a cushioning effect when it is closed, and the elastic element installed inside the door closer can store energy when compressed, and when the external force is removed from the door panel, it can automatically slow down. The sliding door panel is restored and closed. For example, Taiwan Patent No. 428658 discloses a door closer that uses gears, racks and springs to realize the action of the door closer. However, the gear and the rack of the door closer have backlash when meshing. Existence, under long-term use, the backlash will increase due to wear and tear, causing intermittent contact between the gear and the rack, resulting in unsmooth operation of the door closer. [0003] This shows tha...

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Problems solved by technology

[0002] The door closer is mainly used to provide a damping effect on the door panel, so that the door panel has a cushioning effect when it is closed, and the elastic element installed inside the door closer can store energy when compressed, and when the external force is removed from the door panel, it can automatically slow down. The sliding door panel is restored and closed. For example, Taiwan Patent No. 428658 discloses a door closer that uses gears, racks and springs to realize the action of the door closer. However, the gear and the rack of the door closer have backlash when meshing. Existence, under long-term use, the backlash will increase due to wear and tear, causing intermittent contact between the gear and the rack, resulting in unsmooth operation of the door closer

[0003] It can be seen that the above-mentioned existing door closer obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general product has no suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. Urgent problem

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