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Title:
STRETCHABLE EXTENSION PIPE, AND ELECTRIC VACUUM CLEANER USING THE SAME
Document Type and Number:
Japanese Patent JP3655132
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a stretchable extension pipe of an electric vacuum cleaner, wherein the stretching operability is improved, and at the same time, fine dust is prevented from adhering to the pipe walls.
SOLUTION: This extension pipe 30 is constituted of an internal pipe 50, an external pipe 40, a fixing means 60, and a seal packing 56. In this case, the internal pipe 50 has a fitting cylindrical section 51 (connection section), which is connected to the gripping pipe 23 of a suction hose, on one end side. Then, on the outer peripheral wall of the internal pipe 50, a plurality of engaging recesses 57 are formed in the axial direction. In the external pipe 40, the internal pipe 50 is fitted from an opening on one end side, movably in the axial direction, and at the same time, on the other end side of which, a connection port 49 (connection section) to connect a suction port body, is disposed. The fixing means 60 is provided in the vicinity of the opening on one end side of the external pipe 40, and has an engaging protuberance 62, which is engaged/disengaged with the engaging recesses 57. The seal packing 56 is arranged on the outer periphery of the end section on the other end side of the internal pipe 50, and slidably comes into contact with the inner peripheral surface of the external pipe 40. The extension pipe can be stretched while gripping the gripping pipe 23 by one hand, the fixing means 60 is operated by the other hand, and thus, the operability is improved. Also, fine dust is prevented from entering a space between the internal pipe 50 and the external pipe 40 by the packing 56.


Inventors:
鳥澤 陽
Application Number:
JP1999000227615
Publication Date:
June 02, 2005
Filing Date:
August 11, 1999
Export Citation:
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Assignee:
東芝テック株式会社
International Classes:
A47L9/24; (IPC1-7): A47L9/24
Domestic Patent References:
JP8228977A
JP6154138A
JP1293834A
Attorney, Agent or Firm:
鈴江 武彦
村松 貞男
坪井 淳
橋本 良郎
河野 哲
中村 誠
河井 将次