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US 12,280,814 B2Granted
Lifter device
AssigneeMakita Corporation
InventorSyuji Aoyama
Life of this patent
Estimating the term…
Abstract
A lifter device includes a pole, a lifting member guided by the pole, a motor that generates power used for ascending and descending of the lifting member, a controller that controls the motor, a case that is fixed to at least a portion of the pole and accommodates the motor and the controller, a transmission mechanism that transmits the power of the motor to the lifting member, and a battery mounting portion that is provided on the case and to which a battery pack is mouted to supply power to the motor.
Claims16
A lifter device comprising:
- a pole;
- a lifting member configured to be guided by the pole;
- a motor configured to generate power used for ascending and descending of the lifting member and coupled to the pole;
- a controller configured to control the motor and coupled to the pole;
- a gear mechanism configured to transmit the power of the motor to the lifting member;
- and
- a battery mounting portion that is coupled to the pole and on which a battery pack is mounted to supply power to the motor, wherein
- the lifter device further comprises either (i) an upper limit sensor configured to sense reaching of the lifting member to an upper height limit in order to prevent the lifting member from ascending past the upper height limit, or (ii) a lower limit sensor configured to sense reaching of the lifting member to a lower height limit in order to prevent the lifting member from descending past the lower height limit.
5 more elements
A lifter device comprising:
- a pole extending in an up-down direction;
- a brushless motor including a stator and a rotor rotatable relative to the stator;
- a speed reduction mechanism having two or more reduction stages;
- a rotating body configured to be rotated by the speed reduction mechanism;
- a wire fixed to the rotating body;
- a plurality of pulleys on which the wire is wound;
- a lifting member configured to ascend and descend by the wire with respect to the pole;
- a battery mounting portion connected to the pole;
- and
- a battery pack for an electric power tool, which is detachably mountable on the battery mounting portion, wherein
- the lifting member is ascendible and descendible while a load of 50 kg to 150 kg is loaded on the lifting member.
8 more elements
Dependencies are inferred from the claim text.