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1. 发明公开

US20230157205A1 CONTROL OF FEED OF TRIMMER LINE 审中-公开
公开(公告)号：US20230157205A1
公开(公告)日：2023-05-25
申请号：US17915605
申请日：2021-03-31
申请人： HUSQVARNA AB
发明人： Stefan Kullberg , Daniel Alexandersson , Joakim Grundberg
IPC分类号： A01D34/416
CPC分类号： A01D34/4162 , A01D69/02
摘要： A trimmer head (1) comprises a rotatable housing (12) connectable to a trimmer line spool (13) rotatably supported by said housing (12) and a locking mechanism (14) for locking the trimmer line spool (13) to the housing (12) with a locking force (FL). The locking mechanism (14) is arranged to be moved from a locked to an unlocked position when a rotation speed of the trimmer head (1) is increased above an operating speed. The increased rotation speed causes a releasing force (FR) greater than the locking force (FL). In the unlocked position, the locking mechanism (14) releases the trimmer line spool (13) from the housing (12) such that the trimmer line spool (13) is movable and a trimmer line (3) spooled around the spool (13) is released and pulled out by a centrifugal force (Fc) caused by the rotation of the trimmer head (1), allowing feed of the trimmer line (3).

2. 发明授权

US10874046B2 Quick loading trimmer head and trimmer thereto 有权
公开(公告)号：US10874046B2
公开(公告)日：2020-12-29
申请号：US15569275
申请日：2015-04-30
申请人： HUSQVARNA AB
发明人： Stefan Kullberg , Anders Hansson
IPC分类号： A01D34/416
CPC分类号： A01D34/4163
摘要： A hand-held cutting device (10) including an elongated member (45), a trimmer head (25), and a power unit operably coupled to the trimmer head (25) to selectively cause rotation of the trimmer head (25). The trimmer head (25) includes a line holding assembly (110, 310) to hold and selectively release trimmer line (70), and a housing to house the line holding assembly (110, 310), wherein the line holding assembly (110, 310) includes a core (140, 340), a line-release knob (160, 350), and a spool (130) configured to hold the trimmer line (70). The knob (160, 350) is axially movable with respect to the core (140, 340) between an extended first position and a retracted second position, the knob (160, 350) extending outwardly from the housing and being non-rotatably fixed to the core (140, 340) when the knob (160, 350) is in the first position.

3. 发明申请

US20180271010A1 AUTOMATIC LINE FEED FOR TRIMMER 审中-公开
公开(公告)号：US20180271010A1
公开(公告)日：2018-09-27
申请号：US15763964
申请日：2016-10-06
申请人： HUSQVARNA AB
发明人： Johan Hallendorff , Tomas Wykman , Stefan Kullberg , Rickard Skogward
IPC分类号： A01D34/416
CPC分类号： A01D34/4161 , A01D34/4162 , A01D34/4163
摘要： A trimmer head (1) arranged to be driven to rotate a trimmer line (3), wherein the trimmer head comprises a housing (1a, 1b) and an inner body (1c) connected to a trimmer line spool (13, 39), the trimmer head being characterized in that the inner body is arranged to be movable relative the housing so that a trimmer line spooled around the trimmer line spool is released and to be pulled out by a centrifugal force caused by the rotation of the trimmer head, thereby allowing feed of the trimmer line. A trimmer (10) comprising a trimmer head according to above, wherein the trimmer further comprises drive means (2, 4) for driving the trimmer head to rotate and wherein the trimmer is arranged to cause a relative movement of the inner body relative the housing by changing the rotation speed of the trimmer head.

4. 发明授权

US12114596B2 Trimmer head and trimmer 有权
公开(公告)号：US12114596B2
公开(公告)日：2024-10-15
申请号：US16967044
申请日：2019-01-21
申请人： HUSQVARNA AB
发明人： Stefan Kullberg
IPC分类号： A01D34/416
CPC分类号： A01D34/4163 , A01D34/4162
摘要： A trimmer head (1) is disclosed arranged to be driven around a rotational axis (ax), via an interface (2), to rotate a trimmer line (3). The trimmer head (1) comprises a housing (1a, 1b), the interface (2), a trimmer line spool (5, 5′), and an automatic feed mechanism (7). The automatic feed mechanism (7) is configured to release a trimmer line (3) spooled around the trimmer line spool (5, 5′) when the trimmer head (1) is subjected to a change in rotational speed, via the interface (2), at a higher rate than a threshold rate of change in rotational speed. The trimmer head (1) further comprises an actuator (9, 9′) connected to the automatic feed mechanism (7) such that a manual actuation of the actuator (9, 9′) releases the trimmer line (3) spooled around the trimmer line spool (5, 5′). The present disclosure further relates to a trimmer (13) comprising a trimmer head (1).

5. 发明授权

US10517209B2 Quick loading trimmer head 有权
公开(公告)号：US10517209B2
公开(公告)日：2019-12-31
申请号：US14666731
申请日：2015-03-24
申请人： Husqvarna AB
发明人： Stefan Kullberg
IPC分类号： A01D34/416
摘要： A trimmer head for a hand-held cutting device may include a first housing portion, a line holding assembly to hold and selectively release trimmer line, and a second housing portion operably coupled to the first housing portion to house the line holding assembly. The line holding assembly may include a spool configured to hold the trimmer line and a core operably coupled to the spool. The line holding assembly may be configured such that rotational movement of the core causes corresponding movement of the spool, but movement of the core in an axial direction does not cause corresponding movement of the spool.

6. 发明申请

US20210037704A1 TRIMMER HEAD AND TRIMMER 有权
公开(公告)号：US20210037704A1
公开(公告)日：2021-02-11
申请号：US16967044
申请日：2019-01-21
申请人： HUSQVARNA AB
发明人： Stefan Kullberg
IPC分类号： A01D34/416
摘要： A trimmer head (1) is disclosed arranged to be driven around a rotational axis (ax), via an interface (2), to rotate a trimmer line (3). The trimmer head (1) comprises a housing (1a, 1b), the interface (2), a trimmer line spool (5, 5′), and an automatic feed mechanism (7). The automatic feed mechanism (7) is configured to release a trimmer line (3) spooled around the trimmer line spool (5, 5′) when the trimmer head (1) is subjected to a change in rotational speed, via the interface (2), at a higher rate than a threshold rate of change in rotational speed. The trimmer head (1) further comprises an actuator (9, 9′) connected to the automatic feed mechanism (7) such that a manual actuation of the actuator (9, 9′) releases the trimmer line (3) spooled around the trimmer line spool (5, 5′). The present disclosure further relates to a trimmer (13) comprising a trimmer head (1).

7. 发明申请

US20180116106A1 QUICK LOADING TRIMMER HEAD AND TRIMMER THERETO 审中-公开
公开(公告)号：US20180116106A1
公开(公告)日：2018-05-03
申请号：US15569275
申请日：2015-04-30
申请人： HUSQVARNA AB
发明人： Stefan Kullberg , Anders Hansson
IPC分类号： A01D34/416
CPC分类号： A01D34/4163
摘要： A hand-held cutting device (10) including an elongated member (45), a trimmer head (25), and a power unit operably coupled to the trimmer head (25) to selectively cause rotation of the trimmer head (25). The trimmer head (25) includes a line holding assembly (110, 310) to hold and selectively release trimmer line (70), and a housing to house the line holding assembly (110, 310), wherein the line holding assembly (110, 310) includes a core (140, 340), a line-release knob (160, 350), and a spool (130) configured to hold the trimmer line (70). The knob (160, 350) is axially movable with respect to the core (140, 340) between an extended first position and a retracted second position, the knob (160, 350) extending outwardly from the housing and being non-rotatably fixed to the core (140, 340) when the knob (160, 350) is in the first position.

8. 发明申请

US20160183452A1 QUICK LOADING TRIMMER HEAD 审中-公开
标题翻译：快速加载修剪头
公开(公告)号：US20160183452A1
公开(公告)日：2016-06-30
申请号：US14584270
申请日：2014-12-29
申请人： Husqvarna AB
发明人： Stefan Kullberg
IPC分类号： A01D34/416 , A01D34/90
CPC分类号： A01D34/4161 , A01D34/416 , A01D34/4162 , A01D34/4163 , A01D34/90
摘要： A hand-held cutting device including an elongated member graspable along a portion thereof by an operator, a trimmer head disposed at one end of the elongated member, and a power unit operably coupled to the trimmer head to selectively cause rotation of the trimmer head, wherein the trimmer head comprises a line holding assembly to hold and selectively release the trimmer line and a housing to house the line holding assembly, wherein the line holding assembly includes a core having a first portion and a second portion, and a spool configured to hold trimmer line that is operably coupled to the core, and wherein the second portion of the core is non-rotatably fixed to the first portion of the core when the trimmer head is in an at-rest state, and is rotatable with respect to the first position of the core when the trimmer head is in an in-use state and rotating.
摘要翻译：一种手持式切割装置，包括由操作者沿其一部分可握持的细长构件，设置在细长构件的一端的修剪器头和可操作地联接到修剪器头的功率单元，以选择性地引起修剪器头的旋转，其中所述修剪器头包括用于保持和选择性地释放所述修剪器线的线保持组件和用于容纳所述线保持组件的壳体，其中所述线保持组件包括具有第一部分和第二部分的芯部，以及被配置为保持修剪线，其可操作地联接到所述芯，并且其中当所述修剪器头处于静止状态时，所述芯的所述第二部分不可旋转地固定到所述芯的所述第一部分，并且可相对于所述第一当修剪器头处于使用状态并旋转时，芯的位置。

9. 发明申请

US20150264861A1 QUICK LOADING TRIMMER HEAD 审中-公开
标题翻译：快速加载修剪头
公开(公告)号：US20150264861A1
公开(公告)日：2015-09-24
申请号：US14666731
申请日：2015-03-24
申请人： Husqvarna AB
发明人： Stefan Kullberg
IPC分类号： A01D34/416 , A01D34/90
CPC分类号： A01D34/4165 , A01D34/4163
摘要： A trimmer head for a hand-held cutting device may include a first housing portion, a line holding assembly to hold and selectively release trimmer line, and a second housing portion operably coupled to the first housing portion to house the line holding assembly. The line holding assembly may include a spool configured to hold the trimmer line and a core operably coupled to the spool. The line holding assembly may be configured such that rotational movement of the core causes corresponding movement of the spool, but movement of the core in an axial direction does not cause corresponding movement of the spool.
摘要翻译：用于手持切割装置的修剪头可以包括第一壳体部分，用于保持并选择性地释放修剪线的线保持组件，以及可操作地联接到第一壳体部分以容纳线保持组件的第二壳体部分。管线保持组件可以包括构造成保持修剪器线的线轴和可操作地联接到线轴的芯。线保持组件可以被配置为使得芯的旋转运动引起线轴的相应运动，但是芯沿轴向的运动不会引起线轴的相应运动。

10. 发明公开

US20240105399A1 HANDHELD POWER TOOL 审中-公开
公开(公告)号：US20240105399A1
公开(公告)日：2024-03-28
申请号：US18371165
申请日：2023-09-21
申请人： HUSQVARNA AB
发明人： Per-Anders Bülow , Stefan Kullberg , Richard Hall , Lars Malmqvist
IPC分类号： H01H3/20 , B25F5/02
CPC分类号： H01H3/20 , B25F5/02
摘要： A handheld power tool (1) is disclosed comprising a handle (20) and a trigger element (30) extending along a curved portion of the handle (20) and being movably arranged relative to the handle (20). The power tool (1) further comprises a spring assembly (8) configured to bias the trigger element (30) towards an unactuated position relative to the handle (20) and a switch (10) configured to switch from a first state to a second state when the trigger element (30) is moved from the unactuated position. The spring assembly (8) comprises a follower (9) and a spring member (13) configured to bias the follower (9) in a first direction (d1) against a sliding surface (18) of one of the handle (20) and the trigger element (30) to bias the trigger element (30) towards the unactuated position. The follower (9) is slidably arranged relative to the sliding surface (18) along a second direction (d2) being perpendicular to the first direction (d1).

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