Vending machine
View Patent ↗There is provided a vending machine that prevents a commodity receptacle from being damaged and a commodity from slipping out thereof by a shock due to falling even if a commodity receptacle undergoes free fall without requiring a complicated structure for preventing the commodity receptacle from undergoing free fall. When it is detected that the fall velocity of a bucket 60 falling due to disconnection of power supply to a second motor 72 a of a bucket moving mechanism 70 is equal to or greater than a predetermined speed, a braking force for decelerating the fall velocity of the bucket 60 is intermittently generated and thereby the bucket 60 can be lowered to the lowest point at a speed slower than free fall. This configuration prevents the bucket 60 from being damaged and a commodity from slipping out thereof by a shock due to falling and does not require a complicated structure for preventing the bucket 60 from undergoing free fall. Additionally, the bucket 60 is not locked, and thus the bucket 60 can be manually moved during maintenance work for restarting the vending operation.
1. A vending machine configured to perform a vending operation, the vending machine comprising:
a plurality of commodity columns arranged in a vertical direction of a vending machine body;
a commodity receptacle for receiving a commodity from at least one of the plurality of commodity columns;
a moving mechanism that moves the commodity receptacle in the vertical direction by a motor, wherein, during the vending operation:
the moving mechanism moves the commodity receptacle to any of the plurality of commodity columns,
the commodity receptacle receives the commodity from the at least one of the plurality of commodity columns,
the moving mechanism moves the commodity receptacle having received the commodity to a commodity take-out port, and
the commodity is delivered to the commodity take-out port from the commodity receptacle;
a fall velocity detector configured to detect a fall velocity of the commodity receptacle falling in response to an error in the vending operation due to disconnection of power supply to the motor of the moving mechanism;
a brake configured to generate a braking force to decrease the fall velocity of the commodity receptacle; and
a control unit comprising at least one processor, the control unit configured to cause the brake to intermittently or continuously generate the braking force when the fall velocity detector detects that the fall velocity of the commodity receptacle is equal to or greater than a predetermined speed.
2. The vending machine according to claim 1 , wherein
the motor is constituted by a pulse motor;
the fall velocity detector is configured to detect a change in a pulse value of the motor as a fall velocity of the commodity receptacle; and
the control unit is configured such that, when a change amount of the pulse value of the motor is greater than a predetermined change amount, the brake generates a braking force.
3. The vending machine according to claim 1 , wherein
the brake is configured such that the motor generates a force for stopping the rotation as a braking force.
4. The vending machine according to claim 1 , further comprising a position detector configured to detect that the commodity receptacle has reached a lowest point,
the vending machine being configured such that, when the position detector detects that the commodity receptacle has reached the lowest point, the moving mechanism moves the commodity receptacle to the commodity take-out port, and the commodity receptacle performs a commodity delivery operation to the commodity take-out port.
5. The vending machine according to claim 2 , wherein
the brake is configured such that the motor generates a force for stopping the rotation as a braking force by holding an electrode of the motor at the same potential.
6. The vending machine according to claim 2 , further comprising a position detector configured to detect that the commodity receptacle has reached the lowest point,
the vending machine being configured such that, when the position detector detects that the commodity receptacle has reached the lowest point, the moving mechanism moves the commodity receptacle to the commodity take-out port, and the commodity receptacle performs a commodity delivery operation to the commodity take-out port.
7. The vending machine according to claim 3 , further comprising a position detector configured to detect that the commodity receptacle has reached the lowest point,
the vending machine being configured such that, when the position detection means detects that the commodity receptacle has reached the lowest point, the moving mechanism moves the commodity receptacle to the commodity take-out port, and the commodity receptacle performs a commodity delivery operation to the commodity take-out port.