Abstract: In an IPM rotor, a first core sheet has a first sheet hole forming a part of an accommodation hole. The first sheet hole has an edge portion having a flat spring portion which is bent by a magnet through insertion of the magnet into the accommodation hole. A pair of recesses forming a clearance with respect to the magnet are formed at both side portions of the flat spring portion of the edge portion of the first sheet hole. A size of the clearance is set based on a relationship between a magnitude of a pressing force of the flat spring portion on the magnet and variation in pressing force.

Abstract: A plant draw-in device and a plant body transplantation system that can draw roots of plant bodies into holes reliably with a simple structure, so that there is no need of monitoring or manual operation for roots insertion and the production efficiency can be improved. The plant draw-in device 110 includes a draw-in tube 111 that can be disposed below a hole 121, a draw-in member 113 provided such as to be capable of protruding from the draw-in tube 111, and a drive unit 114 that reciprocally moves the draw-in member 113 such as to come out from, and retract into, the draw-in tube 111. The draw-in member 113 is formed such that a portion thereof protruding from the draw-in tube 111 deforms and spreads outward.

Abstract: Provided is a transplanting device for performing transplanting between a plurality of culture medium boards cultivating a plurality of plants planted in an aligned manner. The transplanting device includes a transplanting mechanism for transplanting the plants, where the transplanting mechanism performs alternately a step of arranging plants having been arranged in a grid form on a culture medium board of a transplanting source, into a zigzag form on a culture medium board of a transplanting destination, and a step of arranging plants having been arranged in a zigzag form on a culture medium board of a transplanting source, into a grid form on a culture medium board of a transplanting destination.

Abstract: Provided is a transplanting device for performing transplanting between a plurality of culture medium boards cultivating a plurality of plants planted in an aligned manner. The transplanting device includes a transplanting mechanism for transplanting the plants, where the transplanting mechanism performs alternately a step of arranging plants having been arranged in a grid form on a culture medium board of a transplanting source, into a zigzag form on a culture medium board of a transplanting destination, and a step of arranging plants having been arranged in a zigzag form on a culture medium board of a transplanting source, into a grid form on a culture medium board of a transplanting destination.

Abstract: To provide a plant draw-in device and a plant body transplantation system that can draw roots of plant bodies into holes reliably with a simple structure, so that there is no need of monitoring or manual operation for roots insertion and the production efficiency can be improved. The plant draw-in device 110 includes a draw-in tube 111 that can be disposed below a hole 121, a draw-in member 113 provided such as to be capable of protruding from the draw-in tube 111, and a drive unit 114 that reciprocally moves the draw-in member 113 such as to come out from, and retract into, the draw-in tube 111. The draw-in member 113 is formed such that a portion thereof protruding from the draw-in tube 111 deforms and spreads outward.

Abstract: Provided is a cultivation system comprising: a cultivation container capable of accommodating a plurality of plants and a cultivation medium for growing the plant, and provided with a recording medium for recording identification information that is used for identifying each of the plurality of plant; a cultivation shelf provided with plural stages of shelf boards on which the cultivation container is placed; light sources projecting light individually onto upper faces of the shelf boards; a conveyance machine conveying the cultivation container between the plurality of shelf boards. The cultivation system is additionally provided with: an inspection part which has an accommodation part accommodating the cultivation container, and inspects individually the plurality of plants contained in the cultivation container accommodated in the accommodation part; and a recording processing part recording an inspection result each of plant obtained by the inspection part, into the recording medium.

Abstract: There is provided a plant holder capable of, with a simple configuration, causing a root of a plant stock to pass through a holding hole downwardly without damaging the root of the plant stock, preventing a leaf from drooping downward and being damaged, and improving workability when transplantation and harvest are automated without damaging the plant stock by contact with the plant stock. A plant holder 110 includes a fitting portion 111 and having a plant stock support hole 114 in an inner surface, a placement portion 113 which is provided above the fitting portion 111, and a flange portion 112 which is provided above the placement portion 113. The outer diameter of the placement portion 113 is formed smaller than the outer diameter of the flange portion 112, and larger than the outer diameter of the holding hole 121.

Abstract: A plant holder having a simple configuration, whereby the root of a plant can be made to pass through to below a holding hole without damaging, leaves are prevented from hanging down and becoming damaged, and the workability in the case of automation can be improved. The plant holder 110 which fits into the holding hole 121 of a cultivation panel 120 and has a supporting hole 114 supporting a plant 101 includes: a fitting part 111, an outer peripheral part of which fits into the holding hole 121 of the cultivation panel 120; a flange part 112 provided in an uppermost part; and an engaging part 113 which is provided between the flange part 112 and the engaging part 111; wherein the external diameter of the engaging part 113 is formed to be smaller than the external diameter of the fitting part 111 and the flange part 112.

Abstract: There is provided a plant transplantation device capable of reliably sucking a root of a plant into a hole portion, reliably causing the root to extend downward from the hole portion without remaining in the hole portion, and improving production efficiency without requiring monitoring or manual operations with a simple configuration. The plant transplantation device includes a suctioning means 110 for sucking a root 103 of a plant 101 and causing the root 103 to pass through a hole portion 121, the suctioning means 110 has a suctioning tube 111 which can be hermetically attached to a lower portion of the hole portion 121 and a suction pipe 112 which causes a negative pressure in the suctioning tube 111, and a water supplying means 130 for supplying water to the root 103 is provided in the vicinity of the hole portion 121.

Abstract: A transplanting device performing transplanting between a plurality of culture medium boards cultivating a plurality of plants planted in an aligned manner, characterized of comprising a transplanting mechanism transplanting the plants, wherein the transplanting mechanism performs alternately a one step of arranging plants having been arranged in a grid form on a culture medium board of transplanting source, into a zigzag form on a culture medium board of transplanting destination and a other step of arranging plants having been arranged in a zigzag form on a culture medium board of transplanting source, into a grid form on a culture medium board of transplanting destination.

Abstract: Provided is a plant cultivation device that improves cultivation efficiency and usability. A plant cultivation device comprises: a rack unit provided with cultivation racks on which cultivation units accommodating plants are stored as culture medium units; and a conveying device which moves along a horizontal movement path defined by a guide rail, and performs transport of the culture medium units and loading/unloading of the culture medium units to/from the cultivation racks. Multiple cultivation racks constitute a cultivation rack row, in which the cultivation racks are arranged at multiple levels in an up-down direction. The rack unit comprises: a cultivation storage constituted of multiple cultivation rack rows; and a loading/unloading station having a stock rack row, in which the holding frames of cultivation units not accommodating plants are stored as empty units. The transport device performs loading/unloading of the holding frames to/from the stock rack row.