专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5234177A Magnetic braking apparatus and tension control system using the magnetic braking apparatus 失效
标题翻译：使用磁力制动装置的磁力制动装置和张力控制系统
公开(公告)号：US5234177A
公开(公告)日：1993-08-10
申请号：US691150
申请日：1991-04-25
申请人： Hiroshi Maji , Hajime Nakamura , Hikaru Okuno
发明人： Hiroshi Maji , Hajime Nakamura , Hikaru Okuno
IPC分类号： B65H23/06
CPC分类号： B65H23/066
摘要： A magnetic braking apparatus is integrally attached with a load detector such as an arm-like load cell through an attachment member, an outer fin, or a rotary joint between a yoke body and a stationary portion of an outside construction or facility thereby to form a magnetic braking apparatus having a function of load detection. A tension control system incorporates the magnetic braking apparatus with the load detector attached thereto to apply a braking force to a let-off reel. A controller in the tension control system calculates a roll diameter of the let-off reel based on a number of rotations detected by a rotation detector and a number of pulses generated in one rotation of the let-off reel, and generates a control signal representative of a desired braking torque which corresponds to the calculated roll diameter. The controller further receives from the load detector of the magnetic braking apparatus, a feedback signal representative of an actual braking force applied to the let-off reel, and the controller calculates an error signal between the desired braking torque signal and the feedback signal. The error signal is applied to the magnetic braking apparatus to excite the same. Thus, the accuracy of tension control is improved.

2. 发明授权

US5178582A Electromagnetic powder coupling device 失效
标题翻译：电磁粉末耦合器件
公开(公告)号：US5178582A
公开(公告)日：1993-01-12
申请号：US706335
申请日：1991-05-28
申请人： Hiroshi Maji , Hiroyoshi Yamaji , Hidehisa Tuji
发明人： Hiroshi Maji , Hiroyoshi Yamaji , Hidehisa Tuji
IPC分类号： F16D37/02 , F16D63/00
CPC分类号： F16D57/002 , F16D37/02 , F16D2037/002 , Y10T464/10 , Y10T464/30
摘要： An electromagnetic powder coupling device which can be used either as a brake or a clutch. In order to remove undesirable heat in the device, one attributable to Joule heat mainly emanated by field member, a rotor and a cylinder, and to other to frictional heat, especially inevitable for this kind of electromagnetic powder coupling device which is emanated by the friction between the rotor, cylinder and the magnetic powder filled in the space between the cylinder and the rotor, the coupling device incorporates a forced air draft cooling system. Two variations of cooling systems are disclosed, both of which have, in common with, at least a blower and a plurality of passages for forced draft air cooling not only to the external part but also to the inner part of the field member and the cylinder.

3. 发明授权

US4844220A Torque limiter 失效
标题翻译：扭矩限制器
公开(公告)号：US4844220A
公开(公告)日：1989-07-04
申请号：US18572
申请日：1987-02-25
申请人： Hiroshi Maji , Sukehachi Oi
发明人： Hiroshi Maji , Sukehachi Oi
IPC分类号： F16D37/02
CPC分类号： F16D37/02 , F16D2037/005 , Y10T464/30
摘要： A torque limiter comprises: a bottomed cylinder formed of a magnetic material; an end plate fixedly and coaxially fitted in the open end of the cylinder; a rotary shaft coaxially and rotatably supported in bearings fitted in the bottom wall of the cylinder and the end plate, respectively; two rotors formed of a magnetic material and coaxially secured to the rotary shaft; a permanent magnet disposed between and contiguously to the rotors and coaxially secured to the rotary shaft; and an annular core formed of a magnetic material and coaxially fitted in the cylinder contiguously to the end plate; magnetic powder filled an axially in extending gap between the core and one of the rotors disposed opposite to the core; and sealing members disposed between the bottom wall of the cylinder and one of the rotors on the side of the bottom. surface of the cylinder and between the inner end wall of the end plate and the other rotor on the side of the end plate. In filling the magnetic powder in the gap, the cylinder is placed upright with the open end thereof turned up, then the magnetic powder is distributed over a radially outermost part of an axial end surface of the rotor, and then the annular core and the end plate are fitted in the open end of the cylinder in that order. Since the rotor is magnetized by the permanent magnet, the magnetic powder is attracted to the rotor, and hence will not fall off, which facilitates filling the magnetic powder in the gap.
摘要翻译：扭矩限制器包括：由磁性材料形成的有底圆筒; 固定并同轴地装配在气缸的开口端的端板; 旋转轴同轴并可旋转地支撑在分别装配在气缸的底壁和端板中的轴承中; 由磁性材料形成并同轴地固定到旋转轴的两个转子; 永磁体，设置在转子之间并且与转子相邻并且同轴地固定到旋转轴; 以及由磁性材料形成并且与所述端板相邻同轴地装配在所述圆筒中的环形芯; 所述磁性粉末在所述芯部和与所述芯部相对设置的所述转子中的一个之间沿轴向延伸的间隙填充; 以及密封构件，其设置在气缸的底壁与底部一侧的转子中的一个之间。圆柱体的表面和端板的内端壁与端板侧的另一个转子之间。在将磁粉填充在间隙中时，将圆筒放置在其开口端部的状态下直立，然后将磁粉分布在转子的轴向端面的径向最外侧部分，然后将环形芯和端部板以顺序安装在气缸的开口端。由于转子被永久磁铁磁化，所以磁性粉末被吸引到转子上，因此不会脱落，这有助于填充间隙中的磁粉。

4. 发明授权

US4974706A Torque limiter 失效
公开(公告)号：US4974706A
公开(公告)日：1990-12-04
申请号：US309345
申请日：1989-02-10
申请人： Hiroshi Maji , Sukehachi Oi
发明人： Hiroshi Maji , Sukehachi Oi
IPC分类号： F16D37/02
CPC分类号： F16D37/02 , F16D2037/005 , Y10T464/30
摘要： A torque limiter comprises: a bottomed cylinder formed of a magnetic material; an end plate fixedly and coaxially fitted in the open end of the cylinder; a rotary shaft coaxially and rotatably supported in bearings fitted in the bottom wall of the cylinder and the end plate, respectively; two rotors formed of a magnetic material and coaxially secured to the rotary shaft; a permanent magnet disposed between and contiguously to the rotors and coaxially secured to the rotary shaft; an annular core formed of a magnetic material and coaxially fitted in the cylinder contiguously to the end plate; magnetic powder filled in the gap between the core and one of the rotors disposed opposite to the core; and sealing members disposed between the bottom surface of the cylinder and one of the rotors on the side of the bottom surface of the cylinder and between the inner end surface of the end plate and the other rotor on the side of the end plate. In filling the magnetic powder in the gap, the cylinder is placed upright with the open end thereof turned up, then the magnetic powder is distributed over the outer end surface of the rotor, and then the annular core and the end plate are fitted in the open end of the cylinder in that order. Since the rotor is magnetized by the permanent magnet, the magnetic powder is attracted to the rotor, and hence will not fall off, which facilitates filling the magnetic powder in the gap.

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