Coupler for lpg charge of vehicle

The present invention relates to a coupler for charging LPG for a vehicle. The present invention provides the improved coupler for charging the LPG, capable of reducing deformation of a charging tube when assembled with a vehicle body and the deformation of a charging gun while being detached after charging is completed and improving assembly workability. The coupler for charging the LPG includes a coupler housing mounted on the inner surface of a filter housing and assembled so that an injection pipe unit of an adaptor is inserted; the adaptor mounted on the outside of the filler housing and comprising a head unit in which an LPG inlet is formed and the injection pipe unit connected with the charging tube by being extended lengthwise from the head unit; a cover installed between the adaptors on the outer surface of the filer housing; and a cap assembly assembled in order for a fixed plate connected to a fuel cap with a tether to be installed between the head unit of the adaptor and the cover while having the fuel cap opening and closing the head unit of the adaptor. The coupler for charging the LPG for the vehicle is characterized in that the adaptor and the coupler housing are mutually connected by a connection bolt penetrating the filler housing and are integrated.