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31. 发明专利

JPH04251704A BORING TOOL 失效
公开(公告)号：JPH04251704A
公开(公告)日：1992-09-08
申请号：JP808091
申请日：1991-01-28
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： RYU KUNIHIKO , HONGO SHOICHI , OKAMURA HIDEZUMI , TORIGOE MASAO , NAGASAKI HARUKI , HATTA HIDEO
IPC分类号： B27C3/08
摘要： PURPOSE:To cut off efficiently without trouble even for a thick plate by providing a rotating center drill bit and a cut drill bit rotating on its own axis while revolving around the center drill bit. CONSTITUTION:A motor case 3 with a motor 30 built in a housing 2 provided with a gripping section 2 is installed slidably in the axial direction and a cup- shaped dust collector 25 is installed in the housing 2 on a cutting tool for installing an illuminating instrument, a speaker or the like on a ceiling face or the like. A center drill bit 4 is mounted on a shaft 40 directly connected with an output shaft of the motor 30, and a spindle 52 supporting a cutter drill bit 5 is revolved on an internal gear 38 rotated by the motor output shaft through gears 36 and 37. A cut off opening is formed on a ceiling face or the like by rotating the spindle 52 through gears 45, 46 and 53.

32. 发明专利

JPH03142111A FASTENING TOOL 失效
公开(公告)号：JPH03142111A
公开(公告)日：1991-06-17
申请号：JP27902589
申请日：1989-10-26
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： RYU KUNIHIKO
IPC分类号： B23B31/173
摘要： PURPOSE:To enhance the lock strength and smoothen releasing by putting a release ring in relative rotation with a shaft, rotating the release ring in the idle range relative to No.2 disc, moving it axially, and thereby performing the locking and releasing of No.1 disc fixed to the shaft with/from the No.2 disc fixed to a sleeve. CONSTITUTION:No.1 disc 6 fixed to a shaft 1 and No.2 disc 7 fixed to a sleeve 2 are detained together by their ratchet teeth 60, 70 whereto a pressure is applied by a leaf spring 8. Now the shaft 1 rotates in the direction of arrow, and a float screw 3 in engagement therewith advances, and pawls 4 are advanced to cause a tool to be fastened. When a handle 50 is grasped and the shaft 1 is rotated oppositely to the arrow, the handle 50 at first rotates in the idle range relative to the sleeve 2. Then a projection 53 on a release ring 5 slips off from a notch 72 in the No.2 disc 7 to move it toward the sleeve 2, and the two discs 6, 7 are released while the shaft 1 solely is left rotating, and the float screw 3 retreats and the pawls 4 are widened.

33. 发明专利

JPH0325282B2 失效
公开(公告)号：JPH0325282B2
公开(公告)日：1991-04-05
申请号：JP1083486
申请日：1986-01-21
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： KOMATSU TERUAKI , KOBAYASHI KYOSHI , RYU KUNIHIKO , SHIBATA SHOICHI
IPC分类号： B23B31/173 , B23B31/12

34. 发明专利

JPH02303772A TIGHTENING DEPTH ADJUSTING DEVICE FOR ROTARY TOOL 失效
公开(公告)号：JPH02303772A
公开(公告)日：1990-12-17
申请号：JP12112889
申请日：1989-05-15
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： RYU KUNIHIKO
IPC分类号： B25B21/00
摘要： PURPOSE:To speedily vary the tightening depth by installing a releasing member for releasing the engagement between the screw member on a sleeve side and a screw in a connection part, when a sleeve is slid for the connection part. CONSTITUTION:In order to adjust the tightening depth of a rotary tool, a sleeve 1 is moved forwardly by pushing an operating ring 2 to the front side. Therefore, the inner surface rib 21 of an operating ring 2 presses only an engagement part 32 on the rear edge side of a screw piece 3, and the screw piece 3 is turned, having a crosspiece 3 set between the hole of the sleeve 1 and the hole 12 on the rear side as fulcrum, and the screw 31 of the screw piece 3 is demounted from the male screw 51 in a connection part 5. Therefore, the sleeve 1 is advanced by pushing the operating ring 2 forwardly in this state. Through this advance, the tightening depth of the rotary tool is varied. When the position of the operating ring 2 for the sleeve 1 is returned to an original. The screw piece 3 is engaged with the connection part 5 again, and the sleeve 1 is connected with the connection part 5 through the screw piece 3 and held at this position.

35. 发明专利

JPH02172609A ELECTRIC ROTARY TOOL 失效
公开(公告)号：JPH02172609A
公开(公告)日：1990-07-04
申请号：JP32700988
申请日：1988-12-23
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： RYU KUNIHIKO , TORIGOE MASAO , NISHIKADO SUMIO
IPC分类号： B25B21/00 , B23B45/00
摘要： PURPOSE:To facilitate operation at a place where a work is hard to do conventionally by connecting the output shaft of a tool body with a chuck by means of a universal joint and making the angle of the chuck for gripping a drill or a driven changeable. CONSTITUTION:The output shaft of a tool body 1 and a chuch 3 are connected with a universal joint and the outer circumference of the universal joint is covered by a front collar 4 and a rear collar 5. The front collar 4 is rotatably connected to the chuck 3 and the rear collar 5 and the rear end of the front collar 4 and the front end of the rear collar 5 are formed as inclined faces 4, 5 inclining to the abovementioned output shaft by predetermined angle (e.g. 45 degree). Moreover, the respective inclined faces 4a, 5a of the front collar 4 and the rear collar 5 are joined rotatably each other and also fixing means (a stopper ring) 14 capable of fixing mutual rotation at a proper rotary position. A work is carried out by gripping a drill, etc., at the chuch 3 facing at any angle.

36. 发明专利

JPH01216703A FASTENING TOOL 失效
公开(公告)号：JPH01216703A
公开(公告)日：1989-08-30
申请号：JP4099988
申请日：1988-02-24
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： RYU KUNIHIKO , TORIGOE MASAO
IPC分类号： B23B31/173 , B23B31/12
摘要： PURPOSE:To prevent the fastening force from being loosened when vibration is applied by arranging a roller looking the one-way rotation of a ring to a shaft and a groove in parallel with a shaft and bringing the ring into contact with the roller on one end side of the axial movement. CONSTITUTION:When a ring 2 is rotated in the arrow F direction, the ring 2 and a shaft 2 are disengaged because a groove 40 has a wedge-shaped cross section, a taper bush 25, a guide block 7 and a float screw 6 are rotated, a claw 5 is advanced to fasten a tool. If the shaft 1 is rotated in the arrow T1 direction when the tool is fastened with a screw, the relative rotation in the arrow F direction fastening the tool occurs on the ring 2. When it is to be loosened, the shaft 1 is rotated in the arrow T2 direction, a needle roller 9 bites into the groove 40, the ring 2 is locked. When axial vibration is applied at this time, the ring 2 and the needle roller 9 are parallel with the shaft 1 and no axial component force is generated, the lock is not released. To remove the tool, the ring 2 is retreated, a lock metal 23 is separated from the needle roller 9 and rotated in the arrow U direction to spread a claw 5.

37. 发明专利

JPS62241601A FASTENING TOOL 失效
公开(公告)号：JPS62241601A
公开(公告)日：1987-10-22
申请号：JP8268386
申请日：1986-04-10
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： KOMATSU TERUAKI , KOBAYASHI KIYOSHI , RYU KUNIHIKO
IPC分类号： B23B31/173 , B23B31/12
摘要： PURPOSE:To enhance the easiness to assemble and raise the bond strength in a fastening tool of an electric drill or driver by securing a fixing member for a shaft and taper bushing using a resilient member which is to be in pressure contact with the inner surface of the open end of taper bushing. CONSTITUTION:A handle 3 is pressure fitted on a cylindrical shaft 1, and a float screw 6 is driven in a female screw 13. A pawl 5 to fasten a tool 4 has a tapered external surface, and the rear end is equipped with a detent piece 50 to be detained with a groove provided in said float screw 6. A ring-shaped cap 16 as fixing member is installed between the outside surface of the shaft 1 and the internal surface of the taper bushing 25. A washer 17 of ethylene tetrafluoride resin is furnished between this cap 16 and a flange at the tip of the shaft 1, and a wheel 18 is fitted in groove 27. This constitution provides easiness to assemble.

38. 发明专利

JP2001150210A FASTENING IMPLEMENT 失效
公开(公告)号：JP2001150210A
公开(公告)日：2001-06-05
申请号：JP33367399
申请日：1999-11-25
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： RYU KUNIHIKO
IPC分类号： B23B31/107
摘要： PROBLEM TO BE SOLVED: To provide a fastening implement preventing excessive retightening and eliminating a fact that a tool can not be removed by a human hand. SOLUTION: This fastening implement, comprising a sleeve 2 made rotatable relating to a shaft 1, float screw 3 screwed to the shaft 1 to be moved in an axial direction by rotating the sleeve 2, and a pawl 5 for fastening mounted movably in a diametric direction in the float screw 3 to be moved in a diametric direction according to its movement in an axial direction to fasten a tool 4, to set relative rotation generated by work resistance from the tool 4 to a direction fastening this tool 4 in a screwing relation of the shaft 1 and the float screw 3, is provided with an excessive fastening preventing means 6 stopping a rotational angle of the relative rotation of retightening by the work resistance from the tool 4 at a fixed angle.

39. 发明专利

JP2000343448A HYDRAULIC TOOL 失效
公开(公告)号：JP2000343448A
公开(公告)日：2000-12-12
申请号：JP15088499
申请日：1999-05-31
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： TOYAMA KAZUTO , RYU KUNIHIKO , HIGUCHI YUICHI
IPC分类号： B25B25/00 , B25F5/00 , B30B1/32 , H01R43/04
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic tool capable of easily working in a small place and working for a long time. SOLUTION: This hydraulic tool has a motor 130, a hydraulic pump 140, an output cylinder device 3, and a recessed die of a crimping die 120 coaxially placed in a shell part 151 of a tool main body 150 and is provided with an oil tank 100 connected to a cylinder chamber 50, a release valve for discharging pressurizing fluid in the cylinder chamber 50, and a release button 153 provided near a gripping part 152 for operating the release valve, and the oil tank 100 and the release valve are placed on an upper part of the shell part 151 on an opposite side to the gripping part 152 and an operation part 77 of the release valve and the release button 153 are connected via a lever 155.

40. 发明专利

JPH09322576A MOTOR SHORT-CIRCUITING DAMPING DEVICE OF ELECTRIC TOOL 失效
公开(公告)号：JPH09322576A
公开(公告)日：1997-12-12
申请号：JP13392396
申请日：1996-05-28
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： ODA TAKASHI , RYU KUNIHIKO , TOYAMA KAZUTO
IPC分类号： H02P3/12
摘要： PROBLEM TO BE SOLVED: To enable a short-circuiting circuit for the short-circuiting damping of a motor to be reliable. SOLUTION: A device has a short-circuiting circuit SS for short-circuiting the power supply terminals of a motor M as a power source of an electric tool when the motor stops and performs damping by allowing back electromotive current to flow to a resistor of the short-circuiting circuit SS. At this time, a high-resistance conductor 11 such as Nichrome wire is used in the short- circuiting circuit SS. The high-resistance conductor 11 is lifted from a housing 1 of the tool and is supported. The resistance of the short-circuiting circuit SS is increased by the high-resistance conductor 11 instead of a lead wire. The high-resistance conductor 11 is lifted from the housing 1 and is supported, thus preventing the housing 1 from being melted due to the heat build-up.

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