Mowing height adjusting device and automatic mower having same
A mowing height adjusting device and an automatic mower having the same are provided. The mowing height adjusting device comprises a mowing component and a lifting mechanism, wherein the lifting mechanism comprises a first housing and a first motor, the first housing is directly connected with the mowing component, the first housing is configured to surround and form a first accommodating cavity, the first motor is accommodated in the first accommodating cavity, the first motor is configured to drive the first housing to rotate around a first axis to drive the mowing component to move in a first direction, and the extension direction of the first axis is parallel to the first direction. The device is small in volume and compact in structure.
1 . A mowing height adjusting device, comprising a mowing component and a lifting mechanism, wherein the lifting mechanism comprises a first housing and a first motor, the first housing is directly connected with the mowing component, the first housing is configured to surround and form a first accommodating cavity, the first motor is accommodated in the first accommodating cavity, the first motor is configured to drive the first housing to rotate around a first axis to drive the mowing component to move in a first direction, and an extension direction of the first axis is parallel to the first direction,
wherein the mowing height adjusting device further comprises a base, the base comprises a main body and a frame arranged above the main body, the frame is fixedly connected to the main body such that the frame and the main body restrict the first housing therebetween, the frame comprises a first mounting part and a second mounting part, the first mounting part is detachably connected with the main body through a fastener, at least part of the second mounting part is configured to extend into the first housing, and a motor housing of the first motor is fixedly provided in the second mounting part, and the first mounting part is provided with a through hole in communication with an inner cavity of the cylinder so that the first motor is placeable into the cylinder or removable from the cylinder.
2 . The mowing height adjusting device according to claim 1 , wherein the mowing component comprises a second motor and a mowing blade, the second motor is directly connected with the first housing and is driven by the first housing to move in the first direction, and the mowing blade is connected with the second motor and is configured to move with the second motor.
3 . The mowing height adjusting device according to claim 2 , wherein the second motor is provided with a convex structure, and the convex structure is in threaded engagement with the first housing.
4 . The mowing height adjusting device according to claim 3 , wherein a screw thread extending along the first axis is provided on the peripheral surface of the first housing, and the convex structure is a toothed structure which is engageable with the screw thread.
5 . The mowing height adjusting device according to claim 1 , wherein an output shaft of the first motor is coaxial with the first axis around which the first housing rotates.
6 . The mowing height adjusting device according to claim 1 , wherein a bearing is provided between the first housing and the main body, so that the first housing is rotatable with respect to the main body and prevents the first housing from moving in the extending direction of the first axis.
7 . The mowing height adjusting device according to claim 1 , a first concave space and a second concave space are provided on the main body, at least part of the mowing component is provided in the first concave space, and at least part of the lifting mechanism is provided in the second concave space.
8 . The mowing height adjusting device according to claim 7 , wherein the first concave space of the main body is further provided with a guide structure, the guide structure is slidably connected with the mowing component, and the guide structure is configured to guide the mowing component to move in the first direction.
9 . The mowing height adjusting device according to claim 8 , wherein the guide structure comprises a first guide member and a second guide member detachably connected to the base, and the first guide member and the second guide member are provided at an interval and form a guide slideway through which the second motor of the mowing component moves.
10 . The mowing height adjusting device according to claim 7 , wherein the mowing height adjusting device further comprises a position detector provided on the base, and the position detector is configured to detect the position of the second motor to determine the mowing height.
11 . The mowing height adjusting device according to claim 10 , wherein the position detector comprises a sensor and a magnet, the magnet is provided on the second motor and is configured to move with the second motor, and the sensor is provided on the base and is configured to detect the magnet to determine the position of the second motor.
12 . An automatic mower, wherein the automatic mower comprises a mowing component and a lifting mechanism, the lifting mechanism comprises a first housing and a first motor, the first housing is directly connected with the mowing component, the first housing is configured to surround and form a first accommodating cavity, the first motor is accommodated in the first accommodating cavity, the first motor is configured to drive the first housing to rotate around a first axis to drive the mowing component to move in a first direction, and an extension direction of the first axis is parallel to the first direction,
wherein the automatic mower further comprises a base, the base comprises a main body and a frame arranged above the main body, the frame is fixedly connected to the main body such that the frame and the main body restrict the first housing therebetween, the frame comprises a first mounting part and a second mounting part, the first mounting part is detachably connected with the main body through a fastener, at least part of the second mounting part is configured to extend into the first housing, and a motor housing of the first motor is fixedly provided in the second mounting part, and the first mounting part is provided with a through hole in communication with an inner cavity of the cylinder so that the first motor is placeable into the cylinder or removable from the cylinder.
13 . The automatic mower according to claim 12 , wherein the mowing component comprises a second motor and a mowing blade, the second motor is directly connected with the first housing and is driven by the first housing to move in the first direction, and the mowing blade is connected with the second motor and is configured to move with the second motor.
14 . The automatic mower according to claim 13 , wherein the second motor is provided with a convex structure, and the convex structure is in threaded engagement with the first housing.