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1. 发明授权

US10436301B2 Linear actuator 有权
公开(公告)号：US10436301B2
公开(公告)日：2019-10-08
申请号：US15329336
申请日：2015-07-29
申请人： LINAK A/S
发明人： Rene Sørensen
IPC分类号： H02K7/06 , F16H25/24 , F16H25/20 , H02K7/102 , H02K7/116 , H02K7/14
摘要： A linear actuator includes an electric motor, which through a transmission drives a spindle unit having a spindle with a spindle nut. A tubular adjustment element is displaced either outwards or inwards depending on the direction of rotation of the spindle unit. A brake in the shape of a coil spring and a cylindrical element are arranged for retaining the tubular adjustment element in a given position when the power for the electric motor is cut off. The cylindrical element is configured as a separate cylindrical element arranged on the spindle or a shaft in the transmission. The separate cylindrical element is preferably arranged on a rear end of the spindle between the rear mounting and the bearing for the spindle. In contrast to known constructions, the heat generation is limited, as the heat is led out to the rear mounting.

2. 发明申请

US20170219072A1 LINEAR ACTUATOR 审中-公开
公开(公告)号：US20170219072A1
公开(公告)日：2017-08-03
申请号：US15329336
申请日：2015-07-29
申请人： LINAK A/S
发明人： Rene Sørensen
IPC分类号： F16H25/24 , H02K7/102 , H02K7/116 , H02K7/14
CPC分类号： F16H25/2454 , F16H25/20 , F16H2025/209 , F16H2025/2463 , H02K7/102 , H02K7/1166 , H02K7/14
摘要： Linear actuator comprising an electric motor (6), which through a transmission (12) drives a spindle unit comprising at least one spindle (10) with a spindle nut (13). A tubular adjustment element (3) in connection with the spindle unit is displaced either outwards or inwards depending on the direction of rotation of the spindle unit. A brake in the shape of a coil spring (21) is arranged in connection with a cylindrical element (15) for retaining the tubular adjustment element (3) in a given position when the power for the electric motor (6) is cut off. The cylindrical element (15) is designed as a separate cylindrical element arranged on the spindle (10) or a shaft in the transmission (12). The separate cylindrical element (15) is preferably arranged on a rear end of the spindle (10) between the rear mounting (4) and the bearing (11) for the spindle (10). Compared to the known constructions, where the spring is positioned on a cylindrical element on the side of a worm wheel, the heat generation is limited, just as the heat is led out to the rear mounting.

3. 发明授权

US10432062B2 Linear actuator 有权
公开(公告)号：US10432062B2
公开(公告)日：2019-10-01
申请号：US15329138
申请日：2015-07-29
申请人： LINAK A/S
发明人： Rene Sørensen
IPC分类号： H02K7/06 , F16H25/20 , H02K5/04 , H02K7/116
摘要： A linear actuator includes a housing with an electric motor, which through a transmission drives a spindle with a spindle nut. To the spindle nut is secured a tubular adjustment element, which is guided in a guide tube. A bushing is secured at the rear end of the guide tube for securing the guide tube to the chassis of the actuator. Expediently, the securing is done with stampings from the outer side of the mounting bushing and into the guide tube. These stampings are appropriately done opposite channels, such as screw channels in the guide tube, such that the stampings are received in the channels and do not protrude into the guide tube and prevent the movement of the spindle nut and the adjustment element.

4. 发明授权

US10153678B2 Linear actuator 有权
公开(公告)号：US10153678B2
公开(公告)日：2018-12-11
申请号：US15504986
申请日：2015-08-19
申请人： LINAK A/S
发明人： Rene Sørensen , Jens Jørgen Nielsen
IPC分类号： H02K7/10 , H02K7/06 , H02K7/08 , A61G7/018 , A61G7/012 , A61G7/015
摘要： Linear actuator, where a reversible electric motor (20) through a transmission (21) drives a non-self-locking spindle (22), by means of which an adjustment element (24) secured against rotation can be moved axially for adjusting an element connected thereto such as a backrest section in a bed. The actuator further comprises a quick release (27) for disengagement of the adjustment element (24) from the electric motor (20) and the part of the transmission (21) extending from the electric motor (20) to the quick release (27), such that the spindle (22) is rotated under the load on the adjustment element (24). Further, the actuator comprises brake means for controlling the speed of the adjustment element (24), when the quick release (27) is activated. The brake means are constituted by a rotary damper (45) of the fluid type comprising an internal body located in a liquid-filled hollow in an outer body, where one body is in driving connection with the spindle (22) or the part of the transmission extending from the spindle (22) to the quick release (27), and where a dampening effect, which dampens the speed of the spindle (22) and thus the adjustment element (24), is generated when this body is rotated relative to the other body as a result of activation of the quick release (27). It is thus possible to provide a construction where the lowering speed is self-controlling when the quick release is activated.

5. 发明申请

US20170331350A1 LINEAR ACTUATOR 审中-公开
公开(公告)号：US20170331350A1
公开(公告)日：2017-11-16
申请号：US15504986
申请日：2015-08-19
申请人： LINAK A/S
发明人： Rene Sørensen , Jens Jørgen Nielsen
IPC分类号： H02K7/10 , A61G7/018 , A61G7/012 , A61G7/015 , H02K7/08 , H02K7/06
CPC分类号： H02K7/10 , A61G7/012 , A61G7/015 , A61G7/018 , F16H25/20 , F16H2025/2037 , F16H2025/2071 , F16H2025/209 , H02K7/06 , H02K7/081
摘要： Linear actuator, where a reversible electric motor (20) through a transmission (21) drives a non-self-locking spindle (22), by means of which an adjustment element (24) secured against rotation can be moved axially for adjusting an element connected thereto such as a backrest section in a bed. The actuator further comprises a quick release (27) for disengagement of the adjustment element (24) from the electric motor (20) and the part of the transmission (21) extending from the electric motor (20) to the quick release (27), such that the spindle (22) is rotated under the load on the adjustment element (24). Further, the actuator comprises brake means for controlling the speed of the adjustment element (24), when the quick release (27) is activated. The brake means are constituted by a rotary damper (45) of the fluid type comprising an internal body located in a liquid-filled hollow in an outer body, where one body is in driving connection with the spindle (22) or the part of the transmission extending from the spindle (22) to the quick release (27), and where a dampening effect, which dampens the speed of the spindle (22) and thus the adjustment element (24), is generated when this body is rotated relative to the other body as a result of activation of the quick release (27). It is thus possible to provide a construction where the lowering speed is self-controlling when the quick release is activated.

6. 发明申请

US20170222516A1 LINEAR ACTUATOR 审中-公开
公开(公告)号：US20170222516A1
公开(公告)日：2017-08-03
申请号：US15329138
申请日：2015-07-29
申请人： LINAK A/S
发明人： Rene Sørensen
IPC分类号： H02K7/06 , H02K5/04 , H02K7/116
摘要： Linear actuator comprising a housing (1) with an electric motor (6), which through a transmission (12) drives a spindle (10) with a spindle nut (13). To the spindle nut (13) is secured a tubular adjustment element (3), which is guided in a guide tube (2). A bushing (15) is secured at the rear end of the guide tube (2) by means of which the guide tube (2) is secured to the chassis (7) of the actuator. Expediently, the securing is done with stampings (16) from the outer side of the mounting bushing (15) and into the guide tube (2). These stampings (16) are appropriately done opposite channels, such as screw channels (17) in the guide tube (2), such that the stampings (16) are received in the channels and moreover do not in a disrupting manner protrude into the guide tube (2) and prevent the movement of the spindle nut (13) and the adjustment element (3), respectively.

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