Door closer capable of preventing collision during door opening: Fid-Bau Portal

Door closer capable of preventing collision during door opening

HUANG JIEKAI / HUANG ENKAI

The invention discloses a door closer capable of preventing collision during door opening. The door closer comprises a shell and a plunger. The shell is provided with an inner cavity; the plunger is arranged in the inner cavity and divides the inner cavity into a front cavity and a rear cavity, a reset spring is arranged in the rear cavity, an installation groove is formed in the middle of the plunger, a rotating shaft is installed in the installation groove in a matched mode, the end of the rotating shaft extends out of the shell, a first one-way valve leading to the front cavity from the installation groove is arranged on the front portion of the plunger, and the shell is provided with a first overflow channel communicated with the front cavity and the installation groove. A second one-way valve leading to the rear cavity from the mounting groove is arranged on the rear portion of the plunger, the shell is provided with a second overflow channel communicating with the rear cavity and the mounting groove, and the second overflow channel comprises a second inlet communicating with the rear cavity and a second outlet communicating with the mounting groove. Therefore, compared with a traditional door closer, the one-way valves and the overflow channels are arranged on the two sides of the plunger of the door closer, so that the door closer has a buffering function when a door is opened, and a door leaf is prevented from colliding with a wall.

本发明公开了一种开门防碰撞闭门器，包括壳体和柱塞。壳体设有内腔；柱塞设置在内腔，柱塞将内腔分为前腔和后腔，后腔设有复位弹簧，柱塞的中部设有安装槽，安装槽配合安装有转轴，转轴的端部延伸至壳体外，柱塞的前部设有从安装槽通向前腔的第一单向阀，壳体设有连通前腔和安装槽的第一溢流通道，柱塞的后部设有从安装槽通向后腔的第二单向阀，壳体设有连通后腔和安装槽的第二溢流通道，第二溢流通道包括连通后腔的第二入口和连通安装槽的第二出口。因此，相比传统的闭门器，该闭门器的柱塞两侧均设有单向阀和溢流通道，从而保证开门时也具有缓冲作用，防止门扇跟墙壁发生碰撞。

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