Time relay for preventing knob cover from falling off

The utility model discloses a time relay preventing a knob cover from falling off, which comprises a shell, a relay body and a knob used for adjusting set time, the knob comprises a rotating shaft and the knob cover, the relay body is arranged in the shell, the inner end of the rotating shaft is connected and matched with the relay body, and the outer end of the rotating shaft penetrates out of the front end of the shell. The knob cover is axially sleeved on the outer end of the rotating shaft; and a limiting structure for limiting the knob cover from axially separating from the rotating shaft is arranged between the knob cover and the shell. Through the arrangement of the limiting structure, the knob cover can be effectively prevented from falling off from the rotating shaft. 本实用新型公开了一种防止旋钮盖脱落的时间继电器，包括壳体、继电器本体和用于调节设定时间的旋钮，所述旋钮包括转轴和旋钮盖，继电器本体装设在壳体内，转轴的内端与继电器本体连接配合，转轴的外端从壳体的前端穿出，所述旋钮盖轴向套接在转轴的外端上，旋钮盖和壳体之间设置有用于限制旋钮盖从转轴上轴向脱出的限位结构。通过上述限位结构的设置，使得本实用新型可以有效避免旋钮盖从转轴上脱落。