Trimming machine

Patent metadata

Field	Value
Publication number	US-2023014201-A1
Application number	US-202217866750-A
Country	US
Kind code	A1
Filing date	Jul 18, 2022
Priority date	Jul 19, 2021
Publication date	Jan 19, 2023
Grant date	—

Abstract

A trimming machine capable of suppressing damage to a gear when blades are locked, with a simple structure without increasing weight and cost. The trimming machine includes: an electric motor; a blade drive gear rotationally driven by the electric motor; an eccentric cam provided in the gear; and a pair of blades relatively slidably facing and contacting each other, in which the eccentric cam is adapted to reciprocate the pair of blades in relatively opposite directions along the longitudinal direction of the blades, thereby grinding cutting edges against each other, the cutting edges provided in a protruding manner with gaps therebetween in the pair of blades, and a shock absorbing portion is provided between a connecting portion connected to the eccentric cam and the cutting edges in each of the blades.

First claim

What is claimed is:

1 . A trimming machine comprising:
an electric motor; a blade drive gear rotationally driven by the electric motor; an eccentric cam provided in the gear; and a pair of blades relatively slidably facing and contacting each other, wherein: the eccentric cam is adapted to reciprocate the pair of blades in relatively opposite directions along a longitudinal direction of the blades, thereby grinding cutting edges against each other, the cutting edges provided in a protruding manner with gaps therebetween in the pair of blades, and a shock absorbing portion is provided between a connecting portion connected to the eccentric cam and the cutting edges in each of the blades.

2 . The trimming machine according to claim 1 , comprising a connecting rod that connects the eccentric cam and each of the blades,
wherein the shock absorbing portion is provided between a connecting portion connected to the connecting rod and the cutting edges in each of the blades.

3 . The trimming machine according to claim 1 , wherein the shock absorbing portion includes a fragile portion.

4 . The trimming machine according to claim 1 , wherein the shock absorbing portion includes a slit portion extending in an orthogonal direction relative to a reciprocating direction of the blades.

5 . The trimming machine according to claim 4 , wherein a width in the orthogonal direction of the shock absorbing portion including the slit portion is wider than a width in the orthogonal direction of each of the blades between the connecting portion and the shock absorbing portion and/or is wider than a width in the orthogonal direction of each of the blades between the shock absorbing portion and the cutting edges.

6 . The trimming machine according to claim 4 , wherein a width in the orthogonal direction of the shock absorbing portion including the slit portion is narrower than a width in the orthogonal direction of the cutting edges provided in a protruding manner in each of the blades.

7 . The trimming machine according to claim 4 , wherein the slit portion is provided with a fragile portion.

8 . The trimming machine according to claim 7 , wherein the fragile portion includes at least one of a notch, a cutout, a recess, or a groove.

9 . The trimming machine according to claim 4 , wherein the slit portion extends, in the orthogonal direction relative to the reciprocating direction of the blades, from an elongated aperture into which a member that retains the pair of blades reciprocatively in relatively opposite directions along the longitudinal direction of the blades is inserted.

10 . The trimming machine according to claim 4 , wherein the slit portion extends, in the orthogonal direction relative to the reciprocating direction of the blades, from a position different from an elongated aperture into which a member that retains the pair of blades reciprocatively in relatively opposite directions along the longitudinal direction of the blades is inserted.

Assignees

• Yamabiko Corp

Inventors

• Kodama Hisao

Classifications

• A01G3/053 Primary

  motor-driven · CPC title

• A01G2003/0461

  with reciprocating knives · CPC title

• F16H21/22

  with one connecting-rod and one guided slide to each crank or eccentric · CPC title