A charge port lock device comprising: a charge port that is providable on a vehicle and that includes a connecting portion to which a charge connector for supplying charging power to a battery installed on the vehicle is connectable; an engagement member that is provided on the charge connector , and that restricts, while the charge connector is connected to the charge port , disconnection of the charge connector from the charge port by being engaged with an engagement portion provided on the charge port and allows the disconnection of the charge connector from the charge port by being disengaged with the engagement portion by a release operation; a restriction member that is mountable to the vehicle , and that can switch the engagement member between a restricted state to restrict disengagement from the engagement portion and an unrestricted state not to restrict disengagement from the engagement portion ; and a lock actuator that drives the restriction member between a lock position that puts the engagement member into the restricted state and an unlock position that puts the engagement member into the unrestricted state, characterised in that the charge port lock device further comprises a bracket that supports the connecting portion , wherein the bracket has an upper plate and an expanded plate , wherein the expanded plate is expanded from the upper plate so as to cover a movable range of the restriction member from above; and wherein a first clearance (a1) is formed between the restriction member and the expanded plate and a second clearance (b1) is formed between the engagement member and the restriction member in the restriction state of the engagement member . a charge port that is providable on a vehicle and that includes a connecting portion to which a charge connector for supplying charging power to a battery installed on the vehicle is connectable; an engagement member that is provided on the charge connector , and that restricts, while the charge connector is connected to the charge port , disconnection of the charge connector from the charge port by being engaged with an engagement portion provided on the charge port and allows the disconnection of the charge connector from the charge port by being disengaged with the engagement portion by a release operation; a restriction member that is mountable to the vehicle , and that can switch the engagement member between a restricted state to restrict disengagement from the engagement portion and an unrestricted state not to restrict disengagement from the engagement portion ; and a lock actuator that drives the restriction member between a lock position that puts the engagement member into the restricted state and an unlock position that puts the engagement member into the unrestricted state, characterised in that the charge port lock device further comprises a bracket that supports the connecting portion , wherein the bracket has an upper plate and an expanded plate , wherein the expanded plate is expanded from the upper plate so as to cover a movable range of the restriction member from above; and wherein a first clearance (a1) is formed between the restriction member and the expanded plate and a second clearance (b1) is formed between the engagement member and the restriction member in the restriction state of the engagement member . <EOS>