Abrégé

[Problem] Provided are a slip ring in which wear due to rotation is reduced as much as possible and an electric motor equipped with the slip ring. [Solution] The slip ring 60a, 60b and electric motor 80a, 80b rotate, at a rotational speed of about a half of that of a rotating body 40, a differential rotation portion 74a, 74b that is a sliding portion. This reduces the virtual rotational speed of the sliding portion, thereby enabling the reduction in the wear of the sliding portion. Further, the slip ring 60a, 60b and the electric motor 80a, 80b position a sliding insulating portion 78 softer than a sliding conducting body 76a, 76b in the gap of the sliding conducting body 76a, 76b. This allows pressing force against the sliding conducting body 76a, 76b to be received on the sliding insulating portion 78 side, thereby enabling the reduction in the pressing force acting on the sliding conducting body 76a, 76b. This makes it possible to further reduce the wear of the sliding conducting body 76a, 76b, a rotating body electrode 62, and a fixed electrode 64.

Classes IPC  ?

• H02K 13/00 - Association structurelle de collecteurs de courant et de moteurs ou de génératrices, p. ex. plaques de montage des balais ou connexions avec les enroulementsAgencement des collecteurs de courant dans les moteurs ou les génératricesDispositions pour améliorer la commutation
• H01R 39/00 - Collecteurs de courant rotatifs, distributeurs ou interrupteurs

Abrégé

LL is reduced. This makes it possible to suppress loss, and to effectively use the supplied power.

Classes IPC  ?

• H02K 7/10 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques
• H02K 17/02 - Moteurs asynchrones à induction
• H02K 21/10 - Induits tournants

Abrégé

The present invention provides a computer system for ensuring future product purchase prices. A computer system 10 is configured to be connected to at least one user device 30 via a network. The computer system 10 comprises a processor unit 60 and a database unit 70. The database unit 70 comprises a sales management database 71 that manages sales management information for each product. The processor unit 60 is configured to allow information that, on the basis of the sales management information, indicates the future purchase price of at least one product to be displayed on at least one of the user devices 30.

Classes IPC  ?

• G06Q 30/06 - Transactions d’achat, de vente ou de crédit-bail