Terminal cover body and terminal

A terminal, comprising a terminal cover body, which is used for covering a device body of a terminal and encapsulating electronic components in the device body, comprising:

• a casing body, wherein a slide slot is provided on the casing body, and a slide block is provided in the slide slot;
• when the slide block is pushed, a lock unit which contacts with the slide block moves between a first state and a second state;
• wherein in the first state, the lock unit is engaged with the device body, and the casing body is tightly coupled with the device body;
• in the second state, the lock unit is detached from the device body, and the casing body is separated from the device body,
• wherein the casing body comprises a first casing and a second casing which are combined;
• an interlayer with an accommodation space is formed between the first casing and the second casing, the lock unit is provided in the interlayer, and the slide slot is provided on the first casing,
• wherein the lock unit comprises a first rod body and a second rod body which are set crosswise;
• the lock unit is fixed on the first casing and the second casing via a middle rotating shaft which is set at a junction of the first rod body and the second rod body.