Device for automatically closing door

Abstract

The invention relates to an automatic door closer which comprises a casing, a sliding set, a transmission set, a piston set and an opening-closing strength adjusting device. The casing is provided with a front cavity, a back cavity and a middle cavity along the direction of a long axle and is provided with an axle hole along the direction of a short axle. The sliding set is arranged at the middle cavity of the casing in a slide way and comprises a slide carriage, a first idler wheel and a second idler wheel. The slide carriage is provided with a first lateral part, a second lateral part, a middle part arranged between the first lateral part and the second lateral part and a clip slot which communicates with the first lateral part, the middle part and the second lateral part. The first idler wheel and the second idler wheel are arranged in the clip slot. The transmission set comprises a transmission shaft and an eccentric cam component combined with the transmission shaft. The transmission shaft is articulated with the axle hole of the casing and penetrates through the middle part of the slide carriage. The eccentric cam component is arranged in the clip slot of the slide carriage and is in abutting joint with the first idler wheel and the second idler wheel. The piston set is arranged at the back cavity of the casing and is connected with the first lateral part. The opening-closing strength adjusting device is assembled at the front cavity of the casing and is in abutting joint with the sliding set.

Description

technical field [0001] The invention relates to an automatic door closer in the field, in particular to an automatic door closer. 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, so that it can automatically pull slowly when the external force is removed from the door panel The door panel is restored and closed. For example, Taiwan Patent Announcement No. 428658, gears, racks and springs are used to realize the action of the door closer. Due to wear and tear, the tooth gap becomes larger, causing intermittent contact between the gear and the rack, causing the door closer to operate unsmoothly. In addition, the above-mentioned door closer cannot precisely adjust the switching force, often because the switching force cannot be adjusted to the optimum level. It is ...

AI Technical Summary

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, so that it can automatically pull slowly when the external force is removed from the door panel The door panel is restored and closed. For example, Taiwan Patent Announcement No. 428658, gears, racks and springs are used to realize the action of the door closer. Due to wear and tear, the tooth gap becomes larger, causing intermittent contact between the gear and the rack, causing the door closer to operate unsmoothly. In addition, the above-mentioned door closer cannot precisely adjust the switching force, often because the switching force cannot be adjusted to the optimum level. Good but causing inconvenience for users to switch

[0003] This shows that the above-mentioned existing automatic door closer obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently

In order to solve the problems of automatic door closers, relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above problems, which is obvious. It is a problem that relevant industry players are eager to solve

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