Abstract: The invention discloses an automatic folding chair, comprising: a chair seat and a folding chair frame, wherein the folding chair frame comprises an automatic folding assembly, a rear supporting seat, and two front supporting seats symmetrically arranged on the left and the right; the automatic folding assembly comprises an adapter, a telescopic rod, and second connecting rods; the telescopic rod is further provided with a self-locking piece, and the self-locking piece has a locked state and an unlocked state; in the locked state, the self-locking piece can restrict the telescopic rod to expand and contract, which can improve the stability of the chair; in the unlocked state, the telescopic rod can actively expand and contract, which can simplify the user's operation and improve the convenience of use.

Abstract: A redundant vehicle braking system and its electronic control unit and control method thereof is disclosed. The redundant braking system is coupled to the main braking system of the vehicle. The electronic control unit comprises: a receiving module configured to receive a status signal indicating the status of the main braking system and a sensor signal indicating a driver input condition to the brake pedal and a vehicle speed condition; an activation module configured to activate the braking assist function of the redundant braking system when it is judged that the main braking system has entered a mechanical backup state based on the status signal; and a braking assist module configured to, upon activation of the braking assist function, execute a corresponding one of a plurality of braking assist modes based on the sensor signal, wherein the plurality of braking assist modes comprise: a standby mode, a first-assist adjustable mode, a second-assist adjustable mode, and a braking pressure holding mode.

Abstract: A portable folding dual-purpose chair, comprising a seat surface and a seat, the seat comprises a support rod assembly, a connecting rod assembly, U-shaped connectors, four-corner connectors and fixing members; the support rod assembly comprises support rods A, support rods B and support rods C; the connecting rod assembly comprises long connecting rods and short connecting rods. Compared with the prior art, the invention has the advantages that the seat surface and the seat can be separated, the seat can be completely folded and stored, the occupied volume is small, the folding and storing of the folding chair is more convenient and quicker, which improves people's use experience.

Abstract: The present invention relates to a mosquito killer, including a mounting base and a mosquito-killing bat unit, wherein the mosquito-killing bat unit, a handle portion and a movably arranged locking piece; and when a mosquito-killing portion of the mosquito-killing bat unit is inserted into an accommodating cavity of the mounting base, the mounting base drives a locking piece to move and unlock the handle portion, and the handle portion may be turned over to one side of the mounting base. By adoption of the above solution, when the mosquito-killing bat unit is arranged on the mounting base or is used singly, the handle portion of the mosquito-killing bat unit may be turned over for storage.