专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明专利

JPH11107305A SHAFT BEARING DEVICE 失效
公开(公告)号：JPH11107305A
公开(公告)日：1999-04-20
申请号：JP28285897
申请日：1997-09-30
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SATO FUJIO , OGASAWARA MANABU
IPC分类号： E02F3/36 , E02F9/00 , F16C11/04 , F16C33/74
摘要： PROBLEM TO BE SOLVED: To improve sealability and durability by providing a seal means comprising two sorts of elastic materials on the inner and outer sides of an inner bush. SOLUTION: On an inner bush 17, a first seal device 23 is provided to be positioned between a flange part 17B and an arm boss 2, and a second seal device 28 is provided to be positioned between a seal groove 17C and a connection pin 14. The seal device 23 seals slide surfaces of an outer bush 16 and the inner bush 17. The seal device 23 is provided with a seal ring which elastically comes in contact with an outer circumferential surface of the flange part 17B, and an elastic ring to elastically press the seal ring to the flange part 17B, and in case of loosening of tightening force of the seal ring, this tightening force is compensated by restoration force of the elastic ring. The seal device 28 is also provided with a seal ring and an elastic ring.

82. 发明专利

JPH10122378A BEARING DEVICE 失效
公开(公告)号：JPH10122378A
公开(公告)日：1998-05-15
申请号：JP29344696
申请日：1996-10-15
申请人： HITACHI CONSTRUCTION MACHINERY , NIHON VALQUA KOGYO KK
发明人： SATO FUJIO , OGASAWARA MANABU , YAMASHITA JUNICHI , MURAKI HIROMASA , TAKAMURE TATSUO
IPC分类号： E02F9/12 , F16C11/04 , F16C33/74 , F16J15/32
摘要： PROBLEM TO BE SOLVED: To press a seal ring to a connection pin by an elastic ring so that a seal property between a boss member and the connection pin can be held over a long period. SOLUTION: In a pin insertion hole 10A of an arm boss 10, a connection pin 12 is inserted through a bush 14. The connection pin 12 is insertion fitted into a pin insertion fitting hole 11A of a bracket 11, the arm boss 10 and the bracket 11 are turnably connected through the connection pin 12. Between the arm boss 10 and the connection pin 12, a seal device 16 is provided, this seal device 16 is constituted by a mounting ring 17, seal ring 18, elastic ring 20 and a retainer 21. The mounting ring 17 is fitted into the pin insertion hole 10A, a connection part 18A of the seal ring 18 is secured to the mounting ring 17. A lip part 18B of the seal ring 18 is brought into slide contact with the connection pin 12, to be elastically pressed to the connection pin 12 by the elastic ring 20.

83. 发明专利

JPH1086863A ROLLER DEVICE OF RAIL INSTALLING TYPE VEHICLE AND MANUFACTURE OF ROLLING WHEEL BODY FOR ROLLER DEVICE 失效
公开(公告)号：JPH1086863A
公开(公告)日：1998-04-07
申请号：JP13280397
申请日：1997-05-07
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SATO FUJIO , ICHIYANAGI TAKESHI , TANAKA KIYOSHI
IPC分类号： B62D55/14 , B21K23/02 , B62D55/15 , B62D55/32
摘要： PROBLEM TO BE SOLVED: To improve strength of a rolling wheel body, and stably actuate it over a long period of time by constituting the rolling wheel body of a single stepped cylindrical body whose lengthwise directional intermediate part is diametrically expanded by becoming a swelling part by plastic deformation. SOLUTION: Though dead weight of a hydraulic shovel always acts on a rolling wheel body 16, this rolling wheel body 16 is formed as a single stepped cylindrical body. That is, the rolling wheel body 16 is composed of a pair of cylindrical parts 16A and 16A positioned in lengthwise directional both end parts and a swelling part 16B which is positioned between the respective cylindrical parts 16A and whose diameter is expanded outward in the radial direction. Therefore, in the rolling wheel body 16, a joining part whose strength is partially reduced can be eliminated, and damage of the rolling wheel body 16 can be prevented, and a lower side roller device 10 can be stably actuated over a long period of time. Strength of the whole rolling wheel body 16 can also be secured by this swelling part 16B.

84. 发明专利

JPH09303384A BEARING DEVICE 失效
公开(公告)号：JPH09303384A
公开(公告)日：1997-11-25
申请号：JP14818896
申请日：1996-05-17
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SATO FUJIO , OGASAWARA MANABU , SAEKI FUMIMASA
IPC分类号： E02F9/00 , F16C17/10 , F16C17/26
摘要： PROBLEM TO BE SOLVED: To compensate the smooth rotation of each member by preventing occurrence of abrasion between a boss member and an intermediate member, and between the intermediate member and a bracket member. SOLUTION: An outside bush 23 is fitted and attached to the inside of the bush fitting hole 22A of each bucket side link 22, and an inside bush 24 comprising a pair of split bushes 25, 25 is slidably inserted and fitted to the inner circumferential side of each outside bush 23. Also, an outside bush 29 is fitted and attached to the inside of the bush fitting hole 28A of a boss 28, and an inside bush 30 consisting of a pair of split bushes 31, 31 is slidably inserted and fitted to the inner circumferential, side of this outside bush 29. Then, each bucket side link 22 and each arm side link 21 are arranged on both left and right sides of the boss 28, and pin-connected to each other by a connecting pin 34.

85. 发明专利

JPH09111804A BEARING DEVICE 失效
公开(公告)号：JPH09111804A
公开(公告)日：1997-04-28
申请号：JP29920595
申请日：1995-10-23
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SATO FUJIO , OGASAWARA MANABU
IPC分类号： E02F3/38 , E02F9/00 , F16B3/00
摘要： PROBLEM TO BE SOLVED: To regulate the relative rotations of an inside bush and a connecting pin and to compensate a smooth turning movement of a mating member with respect to a boss member over a long period by ensuring that the penetration of dust or the like between the boss member and the mating member is prevented. SOLUTION: While an arm boss 11 fitted at each axial end with an outside bush 15, an inside bush 16, a seal member 17, etc., is placed between a pair of brackets 14, 14, a connecting pin 21 is fitted into a pin penetration hole 14A in one bracket 14, a pin penetration hole 16A in each inside bush 16, and a pin penetration hole 14A in the other bracket 14 in that order so that a key groove 27 in the connecting pin 21 is fitted over a key 28. Thereafter, a locking pin 22 is attached via a fixing ring 23 to the other end of the connecting pin 21 which projects from the latter bracket 14, so that the arm boss 11 and each bracket 15 are coupled together in such a way as to be capable of rotating relative to each other.

86. 发明专利

JPH093970A BEARING DEVICE 失效
公开(公告)号：JPH093970A
公开(公告)日：1997-01-07
申请号：JP17674395
申请日：1995-06-20
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SATO FUJIO , OGASAWARA MANABU
IPC分类号： E02F9/00 , F16C11/04
摘要： PURPOSE: To compensate the smooth rotation of a boss member relative to a mating member over a long period by placing a sealing member at the sliding portions of the boss member and the mating member using a simple mounting structure. CONSTITUTION: An outside bush 16 is fitted into a bush fitting hole 13 in an arm boss 11, an inside bush 17 is slidably provided inside the outside bush 16, and the flange 17C of the outside bush 16 is brought into sliding contact with the outside end face 16A of the outside bush 16 to bear an axial load. With an elastic ring 24 fixed into an annular groove 17D in the inside bush 17, a connecting pin 18 is pressed into the inside bush 17, and a sealing member 21 is placed inside a seal storage space P between the bush fitting hole 13 and the outer peripheral surface of the flange 17C. Therefore, the entrance of earth and sand, etc., onto the sliding surfaces of the outside and inside bushes 16, 17 is surely prevented for reduced wear, and the inside bush 17 and the connecting pin 18 are surely prevented from rotating relative to each other.

87. 发明专利

JPH0484465A STRESS SENSOR AND ITS MANUFACTURE 失效
公开(公告)号：JPH0484465A
公开(公告)日：1992-03-17
申请号：JP19962090
申请日：1990-07-27
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SATO FUJIO , TAMURA MORIO , HATANO KAZUYOSHI , ONOZATO AKIMASA , HASHIMOTO HISANORI , SAKAMOTO YUKIO , TANAKA KIYOSHI , HIDA NOBUYUKI
IPC分类号： G01L9/00 , G01L1/18 , G01L9/04 , H01L29/84
摘要： PURPOSE:To obtain a stress sensor comprising a semiconductor strain gauge to form a strain detection section and an electrode designed under flattening structure by allowing the semiconductor strain gauge and the electrode to be formed inside an amorphous silicon film formed on the surface of a diaphragm section and moreover forming the semiconductor gauge and the electrode continuously. CONSTITUTION:Semiconductor strain gauges 4 and electrodes 5 are continuously formed with an amorphous silicon layer 3 physically. Furthermore, the upper surface of the semiconductor strain gauges 4 and the electrodes 5 are buried and flush with the upper surface of the amorphous silicon layer 3. As a result of the above formation, no offset is formed on the top of the amorphous silicon film 3 even if the semiconductor strain gauges 4 and the electrodes are installed to a diaphragm section 1A, but the top of the amorphous silicon film 3 is formed to be flat, furthermore, the flat surface is continuously formed with regards to the semiconductor strain gauges 4 and the electrodes 5, thereby producing no offset section on their connections. Therefore, this construction enhances the reliability with the connection performance between the semiconductor strain gauges 4 and the electrodes 5, which protects wiring connections from being cut off and enhances connection reliability dramatically.

88. 发明专利

JPH03287037A DIFFERENTIAL PRESSURE SENSOR 失效
公开(公告)号：JPH03287037A
公开(公告)日：1991-12-17
申请号：JP8804890
申请日：1990-04-02
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： TAMURA MORIO , ICHIYANAGI TAKESHI , SATO FUJIO , HASHIMOTO HISANORI , HATANO KAZUYOSHI , ONOZATO AKIMASA , SAKAMOTO YUKIO
IPC分类号： G01L9/04 , G01L9/00 , G01L13/06
摘要： PURPOSE:To completely protect the whole strain detection part with a protection film by providing the strain detection part on one surface of a diaphragm constituted by forming pressure receiving surfaces on both the top and reverse surfaces of a thin plate and making a lead-out conductor penetrate the strain detection part to the other surface. CONSTITUTION:The strain detection part consisting of an insulating film 10, four strain gauges 11, an electric conductor film 12, etc., is provided on the top surface of the diaphragm 1 and its reverse surface is fixed in an area of the circular recessed part 3 of a support member 2 which corresponds to a hole 5 as an opening part by using an adhesive. etc. A terminal part 6 is provided in a recessed part 1a formed in the top surface of the diaphragm 1, and the electric conductor film 12 of the strain detection part is connected to the terminal part 6 and then led out to an electric circuit part by a lead-out wire 7 through the hole 8 of the support member 2. The strain detection part is covered entirely with the protection film 13 and the differential pressure between the pressure of liquid applied to its top surface and the pressure of liquid guided in the hole 5 in the reverse surface is detected by the strain detection part, whose output is led out to the electric circuit part to measure the differential pressure. The strain detection part of the diaphragm 1 is protected completely with the protection film 13, so the detection accuracy and reliability are improved.

89. 发明专利

JPH03175353A ULTRASONIC PROBE AND PREPARATION THEREOF 失效
公开(公告)号：JPH03175353A
公开(公告)日：1991-07-30
申请号：JP16094990
申请日：1990-06-19
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： HASHIMOTO HISANORI , KAWANUMA TAKAO , TAMURA MORIO , SATO FUJIO , HATANO KAZUYOSHI , YAMAGUCHI SHOJI
IPC分类号： G01N29/24 , H04R1/06 , H04R1/34
摘要： PURPOSE:To enhance product yield and capacity by determining the size and position of a lower electrode so as to become the same axis and same diameter or width as a concave lens part and enhancing the alignment accuracy of an ultrasonic generation part with the concave lens part. CONSTITUTION:A lens spherical surface part 90 having a lens opening diameter D1 is provided to the lower end surface of a lens main body 10 composed of a transparent material. The lower electrode 40A opposed to the spherical surface part 90 in coaxial relationship and having a diameter D2 same to or smaller than the diameter D1, the piezoelectric film 20 covering the entire surface of the electrode 40A and the upper electrode 30 provided to the upper surface of the piezoelectric film 20 having a diameter larger than the diameter D2 of the electrode 40A are successively laminated to the upper end surface 14 of the main body 10. Since the electrode 40a is covered with the piezoelectric film 20, an electrode taking-out part 41 is provided thereto. The ultrasonic wave emitted from an ultrasonic generation part expands as advances through the main body 10 and, therefore, the diameter of the electrode 40A is determined with due regard to lens length so that the diameter or ultrasonic beam coincides with the opening diameter of the spherical surface part 90.

90. 发明专利

JPH0329826A MANUFACTURE OF STRESS SENSOR 失效
公开(公告)号：JPH0329826A
公开(公告)日：1991-02-07
申请号：JP16510289
申请日：1989-06-27
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： HATANO KAZUYOSHI , TAMURA MORIO , HASHIMOTO HISANORI , SATO FUJIO , ICHIYANAGI TAKESHI
IPC分类号： G01L1/18
摘要： PURPOSE:To prevent occurrence of crack, deformation, etc. in an insulating film and an amorphous silicon thin film due to a thermal stress by forming the amorphous silicon thin film on the insulating film before the insulating film is fixed to a diaphragm and by crystallizing the thin film by heating. CONSTITUTION:In a laminate piece forming process, a plate-shaped laminate 25 is set on a setting block B and stamped out by a cutter C and thereby a plurality of laminate pieces 26 composed of an insulating film 21', an amorphous silicon thin film 22' and a metal evaporation film 24' and shaped in a disk are formed. Moreover, in a low-temperature joining process wherein each lami nate piece 26 is fixed to a diaphragm 1, the laminate piece 26 is set on a strain- generating part 1B of the diaphragm 1 and they are put in an electric furnace D, heated for a prescribed time at a low temperature of about 400 deg.C or below and then cooled down. Thereby the evaporation film 24' is melted, bonded to the strain-generating part 1B and turned solid, and thus the insulating film 21' is joined to the diaphragm 1.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式