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111. 发明专利

JP2001061726A SUCTION BODY OF VACUUM CLEANER 失效
公开(公告)号：JP2001061726A
公开(公告)日：2001-03-13
申请号：JP24477399
申请日：1999-08-31
申请人： HITACHI LTD
发明人： SATO SUSUMU
IPC分类号： A47L9/06
摘要： PROBLEM TO BE SOLVED: To improve the dewatering property of napped cloths, to shorten a waiting time up to a re-usage time by shortening a drying time and to improve the durability of wiping effect by forming a drain hole in the upper or lower case of a part being adjacent to openings to be communicated with the openings. SOLUTION: In this suction body 1, its outer shell is formed of the upper and lower cases 2 and 3, a bumper 4 is arranged between them, a freely rotatable joint 5 is arranged in a rear end part, a suction port 6 is formed near the lower center of the lower case 3 and it is made to communicate with the joint 5. Besides, a suction groove is formed from the port 6 in a suction side direction and the napped clothes 8 and 9 constituted of a cut pile shape spinning cloth are fixed to the attaching parts 3a and 3b of the lower case 3 by an adhering means such as an adhesive concerning the front and rear parts of the port 6. Then, the openings 3d and 3d are provided in the attachment parts 3a and 3b of the lower case 3, the drain hole 2c is formed at a part communicated with the openings 3d in the upper case 2, and the drain hole 3e is also formed in the lower case 2 communicated with the openings 3d.

112. 发明专利

JP2001025450A SUCTION PORT BODY FOR VACUUM CLEANER 失效
公开(公告)号：JP2001025450A
公开(公告)日：2001-01-30
申请号：JP19837199
申请日：1999-07-13
申请人： HITACHI LTD
发明人： SATO SHIGENORI , SATO SUSUMU , ODAWARA HIROSHI , TAJIMA TAIJI
IPC分类号： A47L9/04
摘要： PROBLEM TO BE SOLVED: To provide a vacuum cleaner wherein the generation of the separation of an air stream from a heat section on a suction pat is eliminated, and the noise reduction is drastically improved. SOLUTION: This vacuum cleaner is equipped with a suction port main body 101 having a suction port on the lower surface, a casing 203 having a suction path which is vertically turnable to the suction port body 101 in a range from a horizontal state to approx. 90 deg. upward, and communicates with the suction port, an upper case 201 which covers the casing 203, and a suction port joint 104 which is arranged at the rear section of the casing 203. The casing 203 and the suction port joint 104 are formed in such a manner that the internal wall of the suction path of the upper case 201 located at the front side of the casing 203 of the suction port body, which is turnable around the rotating axis in the approx. vertical direction, may become a flat surface. Also, the upper section internal wall of the suction path of the casing 203 is formed in a manner to become a flat surface.

113. 发明专利

JP2000217747A ELECTRIC CLEANER 失效
公开(公告)号：JP2000217747A
公开(公告)日：2000-08-08
申请号：JP2126999
申请日：1999-01-29
申请人： HITACHI LTD
发明人： IKEDA RYUJI , SUDO TAKAYUKI , SATO SUSUMU , SATO SHIGENORI , TAJIMA TAIJI
IPC分类号： A47L9/28 , A47L5/24 , A47L5/26 , A47L9/32
摘要： PROBLEM TO BE SOLVED: To improve operability by improving the form of storage of a battery (power unit). SOLUTION: Concerning an electric cleaner provided with a main body 1 of cleaner, for which a rotary brush 3, a dust collecting part 6 and a motor- driven air blowing part 7 are attached to a sucker base 2 forming a brush chamber 2a and integrated, and a rod-shaped handle 8 connected to the main body 1 of cleaner, the rod-shaped handle 8 is constituted hollow and plural storage batteries are serially arranged and covered with a thermally contractible tube so as to be housed in the rod-shaped handle 8 in a serial and integral state.

114. 发明专利

JPH11253370A SUCTION BODY OF VACUUM CLEANER 失效
公开(公告)号：JPH11253370A
公开(公告)日：1999-09-21
申请号：JP367799
申请日：1999-01-11
申请人： HITACHI LTD
发明人： YAMAGUCHI ATSUSHI , SATO SUSUMU , SUNAKAWA MASARO
IPC分类号： A47L9/24 , A47L9/02 , A47L9/04
摘要： PROBLEM TO BE SOLVED: To prevent flawing to a surface to be cleaned and to suppress the wearing of wheels by providing wheels on the front side of the lower face of a suction main body with a suction port on its lower face, arranging rake-up brushes in the neighborhood of the wheels and projecting the lower ends of these rake-up brushes downward compared with the wheels. SOLUTION: The suction port main body of the suction body is divided into two upper/lower parts, and in its lower case a pair of right/left front wheels 125 are arranged at the front part of the suction body and a roller 132 is arranged in the center of a rear part so as to keep a fixed interval between the lower face of the suction body and the surface to be cleaned. In addition, a pair of wheel tables 120 obtained by pivoting wheels 123 for moving in a horizontal direction 123 nearly at right angle with respect to the roller 132 are arranged in the state of being capable of rising and setting on both sides of a casing. Then a recessed and projecting part is provided in front of the suction port of the lower case and a pair of the rake-up brushes 177 are provided nearly on both sides of it and in the neighborhood of the front wheels 125. The tips of the pile threads of these brushes 177 are projected more than the grounded surface of the wheels 125 to float the wheels 125 from a floor surface.

115. 发明专利

JPH11197062A SUCTION OPENING OF VACUUM CLEANER AND VACUUM CLEANER WITH THE SAME 失效
公开(公告)号：JPH11197062A
公开(公告)日：1999-07-27
申请号：JP277798
申请日：1998-01-09
申请人： HITACHI LTD
发明人： YAMAGUCHI ATSUSHI , SATO SUSUMU , SUNAKAWA MASARO
IPC分类号： A47L9/00 , A47L9/02 , A47L9/24
摘要： PROBLEM TO BE SOLVED: To prevent wheels from wearing lopsidedly, suppress noise, and protect a cleaning surface from scratching by arranging at least a pair of rotating shafts for wheels provided at the underside of a suction opening in a tilted state in the longitudinal direction of the suction opening. SOLUTION: A pair of front wheels 125 to move the entire suction opening back and force and keep a fixed clearance between the underside and a cleaning surface and a roller 132 to receive pressure to the cleaning surface while the vacuum cleaner is used, are arranged in the lower case of the suction opening. Axles 126 that support rotatably the pair of front wheels 125 are attached to a lower case at an angle of about 30 degrees in the longitudinal direction of the suction opening, and provided symmetrically in a truncated chevron shape to the center line of the suction opening. Therefore, as the front wheels 125 rotate while sliding even if the suction opening is moved longitudinally or laterally, the front wheels 125 slide in their entire circumferences and are kept from wearing lopsidedly, thereby ensuring direct advance stability for the suction opening together with the rollers 132.

116. 发明专利

JPH1156720A VACUUM CLEANER 失效
公开(公告)号：JPH1156720A
公开(公告)日：1999-03-02
申请号：JP23212897
申请日：1997-08-28
申请人： HITACHI LTD
发明人： SATO SUSUMU , YAMAGUCHI ATSUSHI , SUNAKAWA MASARO , IWASE KOJI
IPC分类号： A47L9/00 , A47L9/04 , A47L9/24
摘要： PROBLEM TO BE SOLVED: To prevent airstream peeling in a suction passage and to reduce noise, by making the section radius of each inside curve passage in suction passages of a casing upward rotatable in a prescribed angle and a suction joint within a specific value range. SOLUTION: A suction body is constituted of a casing 104 to which a universal joint part 103 is mounted rotatable at about 90 deg. upward from the horizontal condition and a suction joint 105 which is mounted rotatable in right and left directions on the casing 104. The R shape of each inside passage of the casing 103 and the suction passage of the suction joint 105 is set within the range of R=10-15. For instance, the radius of curvature R of the bending part of the casing 10 is made about 12.5. By selecting the radius of curvature like this, airstream is prevented from peeling at the rear pat of the bending part to reduce noise.

117. 发明专利

JPH1156712A VACUUM CLEANER 失效
公开(公告)号：JPH1156712A
公开(公告)日：1999-03-02
申请号：JP14538698
申请日：1998-05-27
申请人： HITACHI LTD
发明人： TAJIMA TAIJI , KOMATSU SHIGESABURO , SATO SHIGENORI , SHINOZAKI TOSHIYA , IWASE KOJI , SUNAKAWA MASARO , YAMAMOTO WATARU , SATO SUSUMU
IPC分类号： A47L9/00 , A47L9/04
摘要： PROBLEM TO BE SOLVED: To make a vacuum cleaner lighter and reduce noise, by setting the diameter of an impeller so that rotation torque of the impeller becomes a specific value without equipping a partition between the impeller and a rotation brush and/or a rotation blade. SOLUTION: A brush 104 is spirally wound around the outer periphery of an impeller and a suction body main body 101 is formed so as to suck air through inlet nozzle 105, 106. At that time, a partition is not equipped and the diameter of the impeller 103 is set so as to make rotation torque on a carpet not lower than 50 gr.cm and not higher than 200 gr.cm. By this constitution, an electric blower is driven to make the suction head main body 101 suck air through the suction nozzles 105, 106 when moved on a carpet and air collide with the impeller 103 to generate torque. Since the diameter of the impeller 103 is specified, 50-300 gr.cm of rotation torque to suck is generated. Thus the cleaner can be made small and light and noise can be reduced.

118. 发明专利

JPH1156711A VACUUM CLEANER AND ITS SUCTION APERTURE ASSEMBLY 失效
公开(公告)号：JPH1156711A
公开(公告)日：1999-03-02
申请号：JP14538598
申请日：1998-05-27
申请人： HITACHI LTD
发明人： TAJIMA TAIJI , KOMATSU SHIGESABURO , SATO SHIGENORI , SHINOZAKI TOSHIYA , IWASE KOJI , SUNAKAWA MASARO , YAMAMOTO WATARU , SATO SUSUMU
IPC分类号： A47L9/00 , A47L9/04
摘要： PROBLEM TO BE SOLVED: To provide the suction aperture assembly of a vacuum cleaner which is of a small-size and light-weight type and is less noisy as well as a vacuum cleaner using this suction aperture assembly. SOLUTION: The suction aperture assembly is internally equipped with an impeller 103 which rotates by a suction force, and a rotary brush which has a brush or a blade 104 coming into contact with a face to be cleaned, implanted helically in the entirety or part of the impeller and coaxially rotates with the impeller in one piece, without an interstructure or the like formed between the impeller and the rotary brush. Thus it is possible to constitute a rotary brush and/or a rotary blade on the same axial line as the impeller and therefore, make the suction aperture assembly small-sized and light-weight. In addition, an air is sucked almost entirely from an opening opposite to the face to be cleaned by uplifting the suction aperture assembly, so that the rotation of the impeller is slowed down or stopped and consequently, a noise to be generated by the light-speed rotation of the rotary brush and/or the rotary blade when the suction aperture assembly is uplifted is prevented from being generated.

119. 发明专利

JPH1147049A VACUUM CLEANER AND ITS SUCKING MOUTH BODY 失效
公开(公告)号：JPH1147049A
公开(公告)日：1999-02-23
申请号：JP20416797
申请日：1997-07-30
申请人： HITACHI LTD
发明人： TAJIMA TAIJI , IWASE KOJI , SUNAKAWA MASARO , YAMAGUCHI ATSUSHI , SATO SUSUMU
IPC分类号： A47L9/04
摘要： PROBLEM TO BE SOLVED: To compactly constitute a flow path for guiding an air flow in a wider range in the outer peripheral direction of an impeller by permitting the flow path for permitting a fluid to flow into the impeller to be the plural ones with different forms in the outer peripheral direction of the impeller. SOLUTION: Air flowing-in from the rear part intake port of a sucking mouth body reaches nozzle part rear space through a rear air flow and a part of it is made to flow-in to the impeller while being restricted by a same incident angle through an inter-blade flow path formed by guide blades 401-405. Besides, air flowing-in from the entrance of a scroll nozzle 407 is restricted by a scroll nozzle casing 414 in direction, flows out from a nozzle exit 415 and flows-in to the impeller 104. In the meantime, air flowing-in from a front intake port reaches nozzle part front space through a front air flow path and flows-in to the impeller 104 while being restricted so as to have the same flow-in angle as that of a rear guide blade part by the guide blade 406.

120. 发明专利

JPH10201682A VACUUM CLEANER 失效
公开(公告)号：JPH10201682A
公开(公告)日：1998-08-04
申请号：JP996597
申请日：1997-01-23
申请人： HITACHI LTD , HITACHI TAGA TECH KK
发明人： KAWAUCHI SEIICHI , SAGAWA KOICHI , SATO SUSUMU
IPC分类号： A47L9/04 , A47L5/30
摘要： PROBLEM TO BE SOLVED: To provide a clean sucking body excellent in strength and having satisfactory maintenance property by providing a handle so that a suction port cover can be fixed to a suction body, and curving the fitting part of an upper case to the suction port cover on a rotating cleaner body side. SOLUTION: A pair of horizontally sliding opening and closing levers 113 are set on the inside of a suction port cover 107, and they are operated, whereby the suction port cover 107 can be attached to and detached from a suction port body 108, An upper case 110 has a form partially curved on the suction port cover 107 side, and a groove part 114 is formed along it. Since a rib 115 having the same curved shape is set on the suction port cover 107 so as to be fitted to the groove part 114, the fitting part 116 has a curved form. The suction port cover 107 is stronger than a linear suction port cover, and the camber in molding of the suction port cover 107 is minimized. Since the clearance of the fitting part 116 is minute, the leak of the air flow sucked from the cleaner body can be reduced to improve the sucking performance.

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