Brake device and vehicle

A brake device comprising:

• a caliper body;
• a brake pad disposed on the caliper body and including a friction member positioned on a first surface of the brake pad and side protrusions protruding from side surfaces of the brake pad;
• a return spring having one side coupled to one of the side protrusions of the brake pad and the other side coupled to the caliper body;
• and
• a load spring having one side coupled to the one of the side protrusions of the brake pad and the other side coupled to the caliper body, and supporting a weight in a vertical direction of the brake pad,
• wherein the return spring includes a spirally wound elastic coil configured to provide elasticity for restoring a position of the brake pad that has moved in a first direction in a second direction opposite to the first direction,
• the spirally wound elastic coil extends in the second direction,
• the return spring further includes:
• a pad-coupled portion coupled to the one of the side protrusions, and a spring hook caught on the caliper body at an end of the spirally wound elastic coil,
• the spirally wound elastic coil extends in the second direction from the pad-coupled portion,
• the pad-coupled portion includes:
• a first pad-coupled portion coupled to a first surface of the one of the side protrusions, and a second pad-coupled portion extending in the second direction from the first pad-coupled portion and coupled to a side surface of the side protrusion, and
• the one of the side protrusions includes:
• a first spring groove defined in the first surface of the one of the side protrusions so as to correspond to the first pad-coupled portion;
• and
• a second spring groove defined in the side surface of the one of the side protrusions, wherein the second pad-coupled portion is inserted into the second spring groove.

A vehicle comprising:

• a vehicle body;
• a wheel located beneath the vehicle body and rotatable;
• a brake disk coupled to the wheel and rotatable together with the wheel;
• a caliper body located on one side of the brake disk;
• a brake pad disposed on the caliper body and including a friction surface on one surface of the brake pad and side protrusions protruding from side surfaces of the brake pad;
• a return spring having one side coupled to one of the side protrusions of the brake pad and the other side coupled to the caliper body;
• and
• a load spring having one side coupled to the one of the side protrusions of the brake pad and the other side coupled to the caliper body, and supporting a weight in a vertical direction of the brake pad,
• wherein the return spring includes a spirally wound elastic coil configured to provide elasticity for restoring a position of the brake pad that has moved in a first direction in a second direction opposite to the first direction,
• the spirally wound elastic coil extends in the second direction,
• wherein the return spring further includes:
• a pad-coupled portion coupled to the one of the side protrusions, and a spring hook extending from an end of the spirally wound elastic coil and caught on the caliper body,
• the spirally wound elastic coil extends in the second direction from the pad-coupled portion,
• the pad-coupled portion includes:
• a first pad-coupled portion coupled to a first surface of the one of the side protrusions, and a second pad-coupled portion extending in the second direction from the first pad-coupled portion and coupled to a side surface of the side protrusion,
• wherein the one of the side protrusions includes:
• a first spring groove defined in the first surface of the one of the side protrusions so as to correspond to the first pad-coupled portion, and a second spring groove defined in the side surface of the one of the side protrusions, wherein the second pad-coupled portion is inserted into the second spring groove.