Kabushiki Kaisha Yaskawa Denki

Akio Sakai

Shusaku Yoshida

Toru Shikayama

Kenichi Sadakane

Yuji Nitta

Toshikazu Hamao

Takao Fujii

Tatsuo Abe

In the canned linear motor armature, both the side surfaces of the armature winding () are fixed by two winding fixing frames () so as to sandwich the armature winding in between them in the longitudinal direction. A refrigerant passage () is provided in a space between the can () and the winding fixing frame (). A seal material () is provided in a gap between a case () and the winding fixing frame () to prevent a refrigerant supplied to the refrigerant passage () from leaking to the armature winding () sandwiched in between the two winding fixing frames () to impregnate the armature winding () with the refrigerant. A waterproof film is adhered onto a surface of the winding fixing frame () where the refrigerant comes into contact.

Canned linear motor armature and canned linear motor

A canned linear motor armature and a canned linear motor. The canned linear motor armature including a winding accommodating frame formed in the shape of a recess which accommodates an armature winding; a flat plate-shaped connection substrate which connects the armature winding; cans which close airtightly both opening portions of the housing; refrigerant passages formed respectively between the can and the winding accommodating frame and between the can and the connection substrate; and a lead wire which connects the connection substrate and a terminal base, is so constructed that coating with an adhesive resin is provided around a land that is a connection part for connecting the armature winding and the lead wire on the connection substrate so as to include the connection part, and the surroundings of the adhesive resin are filled with a filled resin.

In a linear motor, a can has a two-layer structure including an inner canand an outer can, and an inner passageformed between an armature windingand the inner canand an outer passageformed between the inner canand the outer canare constituted by each can. Communicating portionsA andA for causing the inner passageand the outer passageto communicate with each other are provided in the vicinity of a refrigerant supply portin each of the cansandin such a manner that a refrigerant supplied from the refrigerant supply portbranches into the inner passageand the outer passageand thus flows. Consequently, it is possible to obtain a linear motor armature and a linear motor having a high cooling capability which can prevent the deformation of the can by using a conventional inactive refrigerant to improve the passage for the refrigerant.

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Fukuoka, Japan

Akio Sakai