An accessory for canister type vacuum cleaner, comprising: - a suction tube comprising a first end portion (7.1) to which a floor cleaning element is intended to be fastened, and a second end portion (7.2) opposite the first end portion (7.1) and intended to be fluidly connected to a suction tip provided on a vacuum cleaner casing , - a gripping handle comprising a main handle part which is elongated and which is mechanically connected to the suction tube , the gripping handle being hingedly mounted relative to the suction tube about a pivot axis and between a first handle position and a second handle position, and - a locking mechanism configured to lock the gripping handle in the first handle position, the locking mechanism including a lock movably mounted on one of the gripping handle and of the suction tube between a locking position in which the lock is configured to cooperate with a locking element provided on the other of the gripping handle and of the suction tube so as to lock the gripping handle in the first handle position, and a release position in which the lock is configured to release the locking element so as to allow a pivoting of the gripping handle between the first and second handle positions, the locking mechanism further including an unlocking member which is configured to be actuated by a user and which is mounted on the gripping handle or the suction tube between a first position and a second position, the locking mechanism being configured such that a movement of the unlocking member from the first position to the second position causes a movement of the lock from the locking position to the release position and such that a movement of the unlocking member from the second position to the first position causes a movement of the lock from the release position to the locking position, characterized in that the lock includes two lateral locking members disposed on either side of the unlocking member , the lateral locking members being slidably mounted in a movement direction (D). - a suction tube comprising a first end portion (7.1) to which a floor cleaning element is intended to be fastened, and a second end portion (7.2) opposite the first end portion (7.1) and intended to be fluidly connected to a suction tip provided on a vacuum cleaner casing , - a gripping handle comprising a main handle part which is elongated and which is mechanically connected to the suction tube , the gripping handle being hingedly mounted relative to the suction tube about a pivot axis and between a first handle position and a second handle position, and - a locking mechanism configured to lock the gripping handle in the first handle position, the locking mechanism including a lock movably mounted on one of the gripping handle and of the suction tube between a locking position in which the lock is configured to cooperate with a locking element provided on the other of the gripping handle and of the suction tube so as to lock the gripping handle in the first handle position, and a release position in which the lock is configured to release the locking element so as to allow a pivoting of the gripping handle between the first and second handle positions, the locking mechanism further including an unlocking member which is configured to be actuated by a user and which is mounted on the gripping handle or the suction tube between a first position and a second position, the locking mechanism being configured such that a movement of the unlocking member from the first position to the second position causes a movement of the lock from the locking position to the release position and such that a movement of the unlocking member from the second position to the first position causes a movement of the lock from the release position to the locking position, <EOS>