A belt buckle for a vehicle safety belt, comprising a housing (3) which is formed by at least two housing shells (1,2) joined together and in which a locking mechanism (4) is arranged, and a pushbutton (22), provided on said housing, for operating the locking mechanism (4), wherein at least two housing shells (1,2) are joined together at their shell rims and that elongated cover strips (8,9) made of solid material and covering the mutually abutting rims (17,18) of the housing shells (1,2) are fixed to the joined housing shells (1,2).

A buckle includes a supporting member, a case, a lock portion and an illuminating unit. The case covers the supporting member. The lock portion is supported by the supporting member and is covered by the case to lock or unlock a tongue which is inserted into an insertion hole. An insertion hole is formed between the case and the lock portion. The illuminating unit illuminates both ends of the insertion hole of the tongue. The illuminating unit includes a light emitting unit, a light distribution unit, a first diffusing unit and a second diffusing unit. The light emitting unit emits light. The light distribution unit distributes the light emitted by the light emitting unit to form a first light beam and a second light beam. The first diffusing unit diffuses the first light beam. The second diffusing unit diffuses the second light beam.

A belt buckle comprises a casing (12) and an illumination system (24) present in the area of a locking tongue insertion opening (14). The illumination system (24) comprises a lamp (32) and a light conductor (26; 26) including a light emission area, and the light conductor (26; 26) includes an annular portion (42; 42) which surrounds at least a major part of the locking tongue insertion opening (14).

Disclosed are a lock catch and a vehicle. The lock catch includes: a base seat, a buckle, a buckle return spring, a transmission member and a button. The base seat is provided with an inserting groove extending in a first direction; the buckle is corresponding to the inserting groove, the buckle is rotatably connected to the base seat to have a first state and a second state, the buckle is provided with a buckle portion configured to be buckled with the buckle hole, and the buckle portion is further configured to be abutted against the locking tongue; the buckle return spring is provided between the buckle and the base seat; the transmission member is connected to the buckle; and the button is provided with two abutting surfaces respectively towards the two transmission portions.

A buckle includes a supporting member, a case, a lock portion and an illuminating unit. The case covers the supporting member. The lock portion is supported by the supporting member and is covered by the case to lock or unlock a tongue which is inserted into an insertion hole. An insertion hole is formed between the case and the lock portion. The illuminating unit illuminates both ends of the insertion hole of the tongue. The illuminating unit includes a light emitting unit, a light distribution unit, a first diffusing unit and a second diffusing unit. The light emitting unit emits light. The light distribution unit distributes the light emitted by the light emitting unit to form a first light beam and a second light beam. The first diffusing unit diffuses the first light beam. The second diffusing unit diffuses the second light beam.