Operation unit and game machine

1. An operation unit comprising:

a button portion configured to move in a first direction, which is a pressing direction, in response to a pressing operation performed by a user;

a first slide portion that is arranged around the button portion and is configured to move in a second direction orthogonal to the first direction due to the button portion moving in the first direction;

a second slide portion that is arranged at a position adjacent in the second direction to the first slide portion and is configured to move in a third direction orthogonal to the first direction and the second direction due to the first slide portion moving in the second direction; and

a biasing member that biases the second slide portion in a direction of preventing movement in the third direction of the second slide portion.

2. The operation unit according to claim 1 , wherein

the button portion includes a protrusion that protrudes in a direction approximately parallel with the third direction,

the first slide portion includes a notch configured to contain the protrusion,

on a surface on the second direction side of the notch, the notch includes a first inclined portion that is inclined so as to be located further away from the second slide portion the further in the first direction it is, and

due to the protrusion sliding against the first inclined portion when the button portion moves in the first direction in response to a pressing operation performed by a user, the first inclined portion is pressed by the protrusion, and the first slide portion moves in the second direction.

3. The operation unit according to claim 2 , wherein

the button portion includes a plurality of said protrusions that protrude in the third direction and a plurality of said protrusions that protrude in a direction opposite to the third direction, and

the first slide portion includes a plurality of said notches in correspondence with the protrusions.

4. The operation unit according to claim 2 , wherein

on a surface opposing the second slide portion, the first slide portion includes a second inclined portion that is inclined so as to be located more toward a side opposite to the third direction the further in the second direction it is,

at a position of coming into contact with the second inclined portion, the second slide portion includes a third inclined portion that is formed approximately parallel to the second inclined portion, and

due to the second inclined portion sliding against the third inclined portion when the first slide portion moves in the second direction, the third inclined portion is pressed by the second inclined portion, and the second slide portion moves in the third direction.

5. The operation unit according to claim 4 , wherein

the first slide portion includes a plurality of said second inclined portions at positions separated by a predetermined gap in the third direction, and

the second slide portion includes a plurality of said third inclined portions in correspondence with the second inclined portions.

6. The operation unit according to claim 1 , wherein

when the pressing operation performed by the user is released, due to the biasing force of the biasing member, the second slide portion, the first slide portion, and the button portion are caused to return to a predetermined location that is the same as a position prior to a pressing operation being started.

7. The operation unit according to claim 1 , further comprising

a display portion arranged at a position on the first direction side relative to the button portion,

wherein at least a portion of the button portion is a light transmitting portion composed of a material with a property of transmitting light, and

an image displayed on the display unit can be viewed via the light transmitting portion.

8. A game machine comprising the operation unit according to claim 1 .