Accelerator device

1. An accelerator device, comprising:

a pad configured to move in an opening direction corresponding to an accelerator opening operation and a closing direction corresponding to an accelerator closing operation and opposite to the opening direction;

a case portion configured to be attachable to a vehicle body and including:

a front wall facing the pad and having an opening,

a rear wall opposite the front wall,

a first side wall connecting the front wall and the rear wall and forming one side surface of the case portion, and

a second side wall forming another side surface of the case portion;

an internal movable mechanism housed within the case portion, and including a shaft rotatably supported by the case portion; and

an arm passing through the opening and connecting the pad and the internal movable mechanism;

wherein

the first side wall includes:

a first bearing portion configured to receive one end of the shaft, and

at least one first groove portion provided vertically below a center axis of a surface of the first bearing portion facing the shaft and connected to the first bearing portion, in a state in which the case portion is attached to the vehicle body, and

the second side wall includes:

a second bearing portion configured to receive the other end of the shaft, and

at least one second groove portion provided vertically below a center axis of a surface of the second bearing portion facing the shaft and connected to the second bearing portion, in a state in which the case portion is attached to the vehicle body.

2. The accelerator device according to claim 1 , wherein

a lower surface of the first groove portion is configured to descend along a direction from the one end of the shaft toward the other end of the shaft, and

a lower surface of the second groove portion is configured to descend from the other end of the shaft toward the one end of the shaft.

3. An accelerator device, comprising:

a pad configured to move in an opening direction corresponding to an accelerator opening operation and a closing direction corresponding to an accelerator closing operation and opposite to the opening direction;

a case portion configured to be attachable to a vehicle body and including:

a front wall facing the pad and having an opening,

a rear wall opposite the front wall,

a first side wall connecting the front wall and the rear wall and forming one side surface of the case portion, and

a second side wall forming another side surface of the case portion;

an internal movable mechanism housed within the case portion, and including a shaft rotatably supported by the case portion;

an arm passing through the opening and connecting the pad and the internal movable mechanism;

wherein

the first sidewall includes:

a first bearing portion configured to receive one end of the shaft, and

a first passage provided vertically below a center axis of a surface of the first bearing portion facing the shaft, having a first opening that is an opening connected to the first bearing portion for receiving the shaft, in a state in which the case portion is attached to the vehicle body, and configured to communicate with an outside of the case portion,

the second side wall includes:

a second bearing portion configured to receive the other end of the shaft, and

a second passage provided vertically below a center axis of a surface of the second bearing portion facing the shaft, having a second opening that is an opening connected to the second bearing portion for receiving the shaft, in a state in which the case portion is attached to the vehicle body, and configured to communicate with the outside of the case portion,

the first passage is arranged below the first opening in a vertical direction, and

the second passage is arranged below the second opening in the vertical direction.

4. An accelerator device, comprising:

a pad configured to move in an opening direction corresponding to an accelerator opening operation and a closing direction corresponding to an accelerator closing operation and opposite to the opening direction;

a case portion configured to be attachable to a vehicle body and including:

a front wall facing the pad and having an opening,

a rear wall opposite the front wall,

a first side wall connecting the front wall and the rear wall and forming one side surface of the case portion, and

a second side wall forming another side surface of the case portion;

an internal movable mechanism housed within the case portion, and including a shaft rotatably supported by the case portion;

an arm passing through the opening and connecting the pad and the internal movable mechanism;

wherein

the first side wall has a first bearing portion configured to receive one end of the shaft,

the second side wall has a second bearing portion configured to receive the other end of the shaft,

the shaft has:

a first shaft groove provided in an outer peripheral surface of a portion of the shaft located inside the first bearing portion, being recessed toward a central axis direction of the shaft, and extending to the outside of the first bearing portion along the central axis direction of the shaft, and

a second shaft groove provided in an outer peripheral surface of a portion of the shaft located inside the second bearing portion, being recessed toward the central axis direction of the shaft, and extending to an outside of the second bearing portion along the central axis direction of the shaft,

the first shaft groove is provided vertically below a central axis of a surface of the first bearing portion facing the shaft, in a state in which the case portion is attached to the vehicle body, and

the second shaft groove is provided vertically below a central axis of a surface of the second bearing portion facing the shaft, in a state in which the case portion is attached to the vehicle body.

5. An accelerator device, comprising:

a pad configured to move in an opening direction corresponding to an accelerator opening operation and a closing direction corresponding to an accelerator closing operation and opposite to the opening direction;

a case portion configured to be attachable to a vehicle body and including:

a front wall facing the pad and having an opening,

a rear wall opposite the front wall,

a first side wall connecting the front wall and the rear wall and forming one side surface of the case portion, and

a second side wall forming another side surface of the case portion;

an internal movable mechanism housed within the case portion, and including a shaft rotatably supported by the case portion; and

an arm passing through the opening and connecting the pad and the internal movable mechanism;

wherein

the first side wall has a first bearing portion configured to receive one end of the shaft,

the second side wall has a second bearing portion configured to receive the other end of the shaft,

a first plane that is a plane parallel to a central axis direction of the shaft is formed on an outer peripheral surface of the one end of the shaft and extends to an outside of the first bearing portion,

a second plane that is a plane parallel to the central axis direction of the shaft is formed on the outer peripheral surface of the other end of the shaft and extends to the outside of the second bearing portion,

the first plane is provided vertically below a central axis of a surface of the first bearing portion facing the shaft, in a state in which the case portion is attached to the vehicle body, and

the second plane is provided vertically below a central axis of a surface of the second bearing portion facing the shaft, in a state in which the case portion is attached to the vehicle body.