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1. 发明专利

JPH09201317A HOSE CONNECTOR 失效
公开(公告)号：JPH09201317A
公开(公告)日：1997-08-05
申请号：JP1151496
申请日：1996-01-26
申请人： HITACHI LTD
发明人： HIRUTA YASUYUKI , SUNAKAWA MASARO
IPC分类号： A47L9/24
摘要： PROBLEM TO BE SOLVED: To provide a hose connector in which deformation of a hose caused by its contained form can be prevented. SOLUTION: A hose lock member 20 is provided at an end part of a hose 2 having flexibility, the hose 2 is inserted into a hose coupling 10, and a stopper ring 14 holds connection of the hose 2 to the hose coupling 10 in a hose connector, where the stopper ring 14 is provided with lock parts 16 to be engaged with engagement parts 15, 16 of the hose coupling 10, with a hose protective body 9 having flexibility provided to the lock parts 16 to be protruded from an end surface of the hose coupling 10 in the hose axial direction toward the center of the hose 2.

2. 发明专利

JPH06105773A VACUUM CLEANER 失效
公开(公告)号：JPH06105773A
公开(公告)日：1994-04-19
申请号：JP25612892
申请日：1992-09-25
申请人： HITACHI LTD
发明人： SUNAKAWA MASARO , HIRUTA YASUYUKI , YAMAMOTO WATARU , ODAWARA HIROSHI , TAMARU TOKIJI
IPC分类号： A47L9/04 , A47L9/28
摘要： PURPOSE:To make light a hose, extension pipe, and suction mouth upon securing the suction performance and enhance the easiness in operating, maintenance. and handling. CONSTITUTION:An air turbine lighter than a motor is used as a drive motive for a rotary brush of a suction mouth 1, and signals from the at-hand operating part 71 of a hose 69 are sent to the body 73 of a vacuum cleaner wirelessly, and a control device controls properly the revolving speed of the rotary brush through automatic control of the quantity of sucked wind. Thereby core wires can be eliminated for use in the suction mouth 1, extension pipe, and hose 69, and the weight be reduced to a great extent to lead to accomplishment of a vacuum cleaner which presents good easiness in operating, is simple in the structure, and excels in the easiness in maintenance works and handling.

3. 发明专利

JPH0332628A VACUUM CLEANER 失效
公开(公告)号：JPH0332628A
公开(公告)日：1991-02-13
申请号：JP16667789
申请日：1989-06-30
申请人： HITACHI LTD
发明人： SUZUKI SHIGEHIKO , IWAO AKIRA , ISHII YOSHITARO , SUNAKAWA MASARO , HIRUTA YASUYUKI
IPC分类号： A47L9/10
摘要： PURPOSE:To form the size of a filter supporting body to the size of the necessary minimum for holding a dead plate of a dust collecting bag without being limited as to the shape of a dust collecting chamber by constituting a hooking part provided on the filter supporting body so as to abut on the engaging body of a main body side. CONSTITUTION:A filter holding body 37 is supported pivotally so as to be freely turnable by the upper case 4, and turns centering around a fitting shaft 94 formed with a columnar shaft attended with the change of a dust collecting bag. In the vicinity of the fitting shaft 94, the hooking part 104 is formed and provided, and on the other hand, on the upper case 4, the engaging body 105 which abuts on the hooking part 104, and also, does not obstruct the turning of the filter supporting body 37 is formed. The hooking part 104 is constituted of four pieces of rib-like projections, and constituted of a circular arc-like guide part 104a roughly centering around the fitting shaft 94 provided so as not to obstruct the turning of the filter supporting body 37, and a roughly linear part for abutting on the engaging body 105 provided on the upper case 4. Also, on the filter supporting body 37, a supporting rib 106 for abutting on the side face of the upper case 4 and controlling the turning of the filter supporting body 37 is provided.

4. 发明专利

JP2003033311A Vacuum cleaner 审中-公开
标题翻译：吸尘器
公开(公告)号：JP2003033311A
公开(公告)日：2003-02-04
申请号：JP2001220816
申请日：2001-07-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRUTA YASUYUKI , SUZUKI SHIGEHIKO
IPC分类号： A47L9/28 , A47L9/24
摘要： PROBLEM TO BE SOLVED: To provide a vacuum cleaner provided with a compact mechanism adjusting the length of a connecting pipe with excellent safety.
SOLUTION: A vacuum cleaner including a trigger switch structure is provided to enable to adjust the length of the connecting pipe to fix the length even in a structure positioned with a contact segment for feeding electricity in an at-hand handle. Moreover, the edge width of the at-hand handle can be ready for the connecting pipe almost as it stands by positioning the trigger switch structure in the approximately central part of a connecting pipe fixation system part. In addition, the strength of a head cover can be ensured to avoid a thin-wall structure and a complicated structure through the elimination of the establishment of the trigger switch on the side of the at-hand handle by positioning the trigger switch structure in the approximately central part of the connecting pipe fixation system part.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种真空吸尘器，该真空吸尘器具有调节连接管长度的紧凑机构，具有极佳的安全性。解决方案：提供一种包括触发开关结构的真空吸尘器，以便能够调节连接管的长度，以便即使在定位有接触段的结构中固定长度，用于在手柄中供电。此外，通过将触发开关结构定位在连接管固定系统部件的大致中心部分，手柄的边缘宽度可以准确地连接到管子上。此外，通过将触发开关结构定位在手柄手柄的侧面，通过消除触发开关的建立，可以确保头盖的强度以避免薄壁结构和复杂的结构连接管固定系统部分的大致中央部分。

5. 发明专利

JP2000157459A UPRIGHT VACUUM CLEANER 失效
公开(公告)号：JP2000157459A
公开(公告)日：2000-06-13
申请号：JP33880298
申请日：1998-11-30
申请人： HITACHI LTD
发明人： HIRUTA YASUYUKI , YAMAGUCHI ATSUSHI
IPC分类号： A47L9/04 , A47L5/30
摘要： PROBLEM TO BE SOLVED: To provide a structure which is a noise reduction structure and furthermore enables to prolong the life of a belt and to switch with low control power. SOLUTION: A slip member 24 is installed at a shaft 13 which is projected in an induction body of an electric air blower 12 and a belt switching structure which moves a belt 26 from the shaft 13 to a side of the slip member 24 is provided. Thereby, a noise reduction structure, prolongation of life of the belt 26 until its exchange and an effect which can switch with low control power can be realized because the structure is the one whose belt 26 does not revolve.

6. 发明专利

JPH1043102A ELECTRIC CLEANER 失效
公开(公告)号：JPH1043102A
公开(公告)日：1998-02-17
申请号：JP20696996
申请日：1996-08-06
申请人： HITACHI LTD , TIGERS POLYMER
发明人： HIRUTA YASUYUKI , SUNAKAWA MASARO , HAYASHI TOKUJIRO , FUJIMOTO NORIAKI
IPC分类号： A47L9/24
摘要： PROBLEM TO BE SOLVED: To recover the original shape of a hose when it is smashed under user's foot by helically winding the band-shaped object of a flexible material whose cross section is almost S-shaped while piling its adjacent side edge parts each other, and protruding an extension part provided projectingly from the bottom part of the upward side edge part in the axial line of the hose in the state of free end. SOLUTION: A band-shaped object T to become the material of the hose has the almost S-shaped cross section while integrally forming a bottom face 203 from a base part 202 forming the inner wall surface of the hose, projecting part 204 rising from the central part of the base part 202 and constituting the projecting part of the hose, downward side edge part 205 forming one terminal part of the band-shaped object T continuously in contact with the projecting part 204, and upward side edge part 206 rising from the base part 202. Then, an extension part 208 is projected while formed thin gradually from a bottom part 207 of the upward side edge part 206 toward the top end. The hose is helically wound while overlapping the downward side edge part 205 and the upward side edge part 206, then both the side edge parts 205 and 206 are integrally adhered with an adhesive.

7. 发明专利

JPH07213465A EXTENSION TUBE FOR VACUUM CLEANER 失效
公开(公告)号：JPH07213465A
公开(公告)日：1995-08-15
申请号：JP991394
申请日：1994-01-31
申请人： HITACHI LTD
发明人： HIRUTA YASUYUKI , SUNAKAWA MASARO , ISHIKAWA TAKEO
IPC分类号： A47L9/24
摘要： PURPOSE:To perform clamp operation securely even after welding in an extension tube for a vacuum cleaner in which a cylindrical main body and a cover are jointed with each other by welding. CONSTITUTION:A cylindrical main body 101 is provided with a shaft bearing 111 having an aperture part at an upper part to receive a circular rotary shaft 110, the cover 102 is provided with a rib body 108 to cover the circular rotary shaft 110, and at the time of welding the cylindrical main body 101 with the cover 102, a gap is provided between an upper part of the circular rotary shaft 110 and the rib body 108. In an extention tube for a vacuum cleaner in which the cylindrical main body 101 and the cover 102 are jointed with each other by welding, clamp operation can be performed securely even after welding, thereby the extension tube, of high reliability, can be provided.

8. 发明专利

JPH0449927A ELECTRIC CLEANER 失效
公开(公告)号：JPH0449927A
公开(公告)日：1992-02-19
申请号：JP15520290
申请日：1990-06-15
申请人： HITACHI LTD
发明人： IWAO AKIRA , HIRUTA YASUYUKI , SUZUKI SHIGEHIKO
IPC分类号： A47L9/00
摘要： PURPOSE:To obtain an electric cleaner in which structure is simple with a small number of parts, assembling and mass productivity are prominent and production cost can be reduced by forming a tail lock for engaging a dust absorbing hose with an opening/closing lid of a cleaner body of an elastic synthetic resin and adhering and fixing it to the opening/closing lid. CONSTITUTION:A tail lock 14 is formed of an elastic synthetic resin, provided at a lower end with a thick fixing part 14b for engaging and fixing it to an opening/ closing lid 7 and upward of the fixing part 14b with a thin hinge part 14a which is bendable to work as a plate spring and a tail lock projection 14a which engages with a ring-shaped groove 10 of a bending joint 10. An upper part of the tail lock 14 is provided with a tapered surface 14d by which an insertion of the bending joint becomes easy. An unlocking handle 14e is formed integrally to project from an upper surface of the opening/closing lid 7. The tail lock 14 is energized in a locking direction (in an engaging direction with the bending joint 10), and if the unlocking handle 14e is pushed, the tail lock projection 14a is disengaged from the ring-shaped groove 10c of the bending joint 10, by which the tail lock 14 is unlocked. If the bending joint 10 is pulled in direction (B) in this state, the bending joint 10 can be disengaged from the opening/closing lid 7.

9. 发明专利

JPH0332627A VACUUM CLEANER 失效
公开(公告)号：JPH0332627A
公开(公告)日：1991-02-13
申请号：JP16667689
申请日：1989-06-30
申请人： HITACHI LTD
发明人： HIRUTA YASUYUKI , IWAO AKIRA , ISHII YOSHITARO , SUZUKI SHIGEHIKO
IPC分类号： A47L9/00
摘要： PURPOSE:To make an extension tube whose diameter is a little different, as well useable and to prevent the collapse, etc., of the extension tube by structuring an extension tube connecting body with a holding body of a screw tightening structure having a slit, and a fitting body engaged to a cleaner main body. CONSTITUTION:An extension tube fitting body 4 and an extension tube holding body 6 are assembled by fitting the turning shaft 9 of the extension tube holding body 6 to the receiving hole 10 of the extension tube fitting body 4, inserting the extension tube holding body 6 into an extension tube 3 and tightening it with a screw to a screw fitting part 11 in an optimum position. Since the claw part 8 of the extension tube fitting body 4 is a tapered shape, the extension tube 3 can be held together by the claw part with an inserting/holding side face rib 12. On the extension tube holding body 6, a slit 13 being shorter than its vertical dimension is provided and it is a screwed structure, therefore, the extension tube whose diameter is a little different can also be used. Also, even if excessive force is applied to the extension tube fitting body 4, the stopper part 14 of the extension tube fitting body 4 is brought into contact with the continuous annular part 15 of the extension tube holding body 6, and it does not occur that the force is exerted directly on the extension tube 3.

10. 发明专利

JPH02177922A HOSE FITTING DEVICE 失效
公开(公告)号：JPH02177922A
公开(公告)日：1990-07-11
申请号：JP33178688
申请日：1988-12-29
申请人： HITACHI LTD , TAGA SANGYO KK
发明人： IIDA AKIRA , IWAO AKIRA , ISHII YOSHITARO , SUZUKI SHIGEHIKO , HIRUTA YASUYUKI
IPC分类号： A47L9/24 , F16L25/00 , F16L33/00 , F16L33/28 , F16L37/098
摘要： PURPOSE:To make a handleability good and to prevent the leak of a suction air by fitting a cylindrical hose locking member to provide a projection engaged with the spiral projection of the hose in the edge of the hose, inserting it into a hose joint and fitting a hose stopper to the hose joint. CONSTITUTION:To a flexible hose 1 having a spiral projection 1a in a axial direction, a cylindrical hose locking member 2 is fitted through four projections 2a, 2b, 2c and 2d engaged with the projection 1a of the hose 1, the member 2 is inserted into a hose joint 3, and locking holes 3a and 3b are provided to the hose joint 3. A cylindrical hose stopper 4 having projections 4a and 4b is fitted to the hose joint 3 by locking the projections 4a and 4b to the locking hole 3a and 3b. The hose stopper 4 is floatingly fitted in the hose 1 in advance before the fitting of the hose 1 and hose locking member 2, the hose locking member 2 to fit the hose 1 is inserted into the hose joint 3, thereafter, the hose stopper 4 is inserted into the hose joint 3, and the projections 4a and 4b are locked to the locking holes 3a and 3b of the hose joint 3.

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