Electric saw device

B - Operations – Transporting – 27 – B

Patent

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Details

B27B 5/34 (2006.01) B23D 45/10 (2006.01) B27B 5/30 (2006.01) B27B 5/38 (2006.01)

Patent

CA 2650190

An electric saw device includes a first saw blade and a second saw blade. The first and the second saw blades are respectively driven by a small transmission shaft and a large transmission shaft to rotate in opposite directions. A round rib is disposed on an inner end surface of the first saw blade, and at least three recessed holes are arranged in a top end surface of the round rib at equal angle intervals. A steel ball is accommodated in each of the recessed holes, and protrudes out of the recessed hole. Protruding ends of the steel balls urge against an inner surface of the second saw blade, so as to limit a distance between the first saw blade and the second saw blade, and form a rolling friction when the first and the second saw blade rotate in the opposite directions. Further, a power output shaft of the electric saw device is joined with the small transmission shaft of the first saw blade through a key connection structure, so as to ensure that the saw blades do not tilt after installation.

Une scie électrique comprend une première lame de scie et une seconde lame de scie. Ces deux lames sont entraînées respectivement par un petit arbre de transmission et un gros arbre de transmission pour tourner en sens inverse. Une nervure arrondie est placée sur la face interne de l'extrémité de la première lame de scie, et au moins trois orifices en retrait sont ménagés sur la face supérieure de l'extrémité de la nervure arrondie, à intervalles angulaires égaux. Une bille d'acier occupe chacun des orifices en retrait, et dépasse du trou en retrait. Les extrémités protubérantes des billes d'acier appuient sur la face interne de la seconde lame de scie de façon à limiter la distance comprise entre la première et la seconde lame de scie, et créer une friction de roulement, lorsque la première et la seconde lame de scie tournent en sens inverse. De plus, un arbre de production d'énergie de la scie électrique est raccordé au petit arbre de transmission de la première lame de scie au moyen d'une structure de raccordement clé, de façon à s'assurer que les lames de scie ne s'inclinent pas une fois installées.

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