Abrégé

The present invention provides a magnet holder that is easy to move even after being released. In an embodiment, provided is a magnet holder comprising: a fixed permanent magnet extending in one direction; a rotatable permanent magnet extending in the one direction and having both ends rotatably fixed; a first yoke and a second yoke which cover both sides of each of the fixed permanent magnet and the rotatable permanent magnet and extend in a vertical direction; and a coil wound around the first and second yokes, wherein, on a cross-section perpendicular to the one direction, the first yoke is in contact with the N pole of the fixed permanent magnet, and the second yoke is in contact with the S pole of the fixed permanent magnet, and the coil, the rotatable permanent magnet, and the fixed permanent magnet are sequentially arranged along the first and second yokes from an attachment surface where the first and second yokes are attached to an attachment object.

Classes IPC  ?

• B23Q 3/154 - Dispositifs stationnaires
• B23B 45/02 - Perceuses tenues à la main ou perceuses analogues portatives, p. ex. en forme de pistoletÉquipement à cet effet entraînées électriquement
• F16B 1/00 - Dispositifs pour assembler des éléments structuraux ou parties de machines ou bien pour empêcher tout mouvement relatif entre eux

Abrégé

The present invention provides a magnet holder which can be moved easily even after release. Provided in one embodiment is the magnet holder comprising: a fixed-type permanent magnet extended in one direction; a rotating-type permanent magnet extended in the one direction and having both ends rotatably fixed; a first yoke and a second yoke covering both lateral surfaces of the fixed-type permanent magnet and the rotating-type permanent magnet, and extended in the vertical direction; and coils which are respectively wound around the first and second yokes. On a cross-section perpendicular to the one direction, the first yoke comes into contact with the N pole of the fixed-type permanent magnet, the second yoke comes into contact with the S pole of the fixed-type permanent magnet, and the coils, the rotating-type permanent magnet and the fixed-type permanent magnet are positioned consecutively along the first and second yokes from an attachment surface of an object to be attached to which the first and second yokes are attached.

Classes IPC  ?

• B23Q 3/154 - Dispositifs stationnaires
• B23B 45/02 - Perceuses tenues à la main ou perceuses analogues portatives, p. ex. en forme de pistoletÉquipement à cet effet entraînées électriquement
• F16B 1/00 - Dispositifs pour assembler des éléments structuraux ou parties de machines ou bien pour empêcher tout mouvement relatif entre eux

Abrégé

Provided is a magnetic holder which may be easily moved even after being released. The magnetic holder includes a fixed permanent magnet extending in one direction, a rotating permanent magnet extending in the one direction and rotatably fixed at both ends, first and second yokes covering both sides of the fixed permanent magnet and the rotating permanent magnet and extending in an up-down direction, and a coil wound around the first and second yokes, wherein, in a cross-section perpendicular to the one direction, the first yoke is in contact with an N pole of the fixed permanent magnet and the second yoke is in contact with an S pole of the fixed permanent magnet, and the coil, the rotating permanent magnet, and the fixed permanent magnet are arranged successively along the first and second yokes from an attachment surface of the first and second yokes attached to the attachment object.

Classes IPC  ?

• B23Q 3/154 - Dispositifs stationnaires
• B25H 1/00 - ÉtablisÉtagères ou supports portatifs pour disposer des outils portatifs ou des pièces à travailler

Abrégé

The present invention provides, in an embodiment, a gear-shifting structure of power equipment, the gear-shifting structure comprising: first and second gears having shafts concentric with a first shaft, respectively, the first and second gears being positioned at different locations along the axial direction of the first shaft, the first and second gears having protrusions formed thereon, respectively, and the first and second gears freely rotating with regard to the first shaft; a clutch disposed concentrically with the first shaft between the first and second gears, the clutch being spline-coupled to the first shaft, and the clutch having engaging members formed thereon so as to protrude toward the first and second gears, respectively; an adjustment member configured to move the clutch toward the first gear or the second gear; a second shaft; and third and fourth gears having shafts concentric with the second shaft, respectively, the third and fourth gears being disposed to engage with the first and second gears and to rotate together with the second shaft. The engaging members of the clutch engage with the protrusion of the first gear or the second gear by means of the adjustment member.

Classes IPC  ?

• B23Q 5/14 - Entraînement mécanique avec des moyens permettant de faire varier les rapports de vitesses de façon discontinue
• B23Q 5/04 - Entraînement des principaux organes de travail des arbres rotatifs, p. ex. des broches de travail