Electric handheld working machine

Patent metadata

Field	Value
Publication number	US-11648656-B2
Application number	US-202016912181-A
Country	US
Kind code	B2
Filing date	Jun 25, 2020
Priority date	Jun 28, 2019
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

An electric handheld working machine includes: a housing including: a motor as a drive source of a working unit; an operating handle; and attaching members provided on an outer surface of the housing and configured to attach a battery to supply electric power to the motor. The attaching members includes: a connecting terminal connected to the battery; a step provided above the connecting terminal and configured to function as a drainage path to drain drops of water to sides; and openings formed in the sides of the attaching members to communicate with the drainage path. The openings communicate with a cooling air flow path configured to allow cooing air to flow through a gap between a back surface of the battery attached to the attaching members and the outer surface between the attaching member.

First claim

The invention claimed is:

1. An electric handheld working machine comprising:
a housing including:
a motor as a drive source of a working unit;
an operating handle; and
an attaching member provided on an outer surface of the housing and configured to attach a battery to supply electric power to the motor,
the attaching members including:
a connecting terminal connected to the battery;
a step provided above the connecting terminal when the electric handheld working machine is positioned such that the operating handle is at a top of the electric handheld working machine and configured to function as a drainage path to drain drops of water to sides of the attaching member; and
openings formed in the sides of the attaching member to communicate with the drainage path,
wherein the openings communicate with a cooling air flow path configured to allow cooling air to flow through a gap between a back surface of the battery attached to the attaching member and an outer surface of the attaching member that faces and is apart from a back surface of the battery, and
wherein a riser of the step has an inclined surface having a center higher than sides of the riser when the electric handheld working machine is positioned such that the operating handle is at a top of the electric handheld working machine.

2. The electric handheld working machine according to of claim 1 , wherein an intake port is provided above the attaching member to take the cooling air into the housing through the cooling air flow path when the electric handheld working machine is positioned such that the operating handle is at a top of the electric handheld working machine.

3. The electric handheld working machine according to claim 1 , wherein:
the housing is connected to a base end of the operating rod; and
the motor drives the working unit attached to a working end of the operating rod via a drive shaft in the operating rod.

4. The electric handheld working machine according to claim 3 , wherein the working unit is a reciprocating blade apparatus including a reciprocating blade member extending in a direction intersecting a longitudinal direction of the operating rod.

Assignees

• Yamabiko Corp

Inventors

• Shimizu Kunio

Classifications

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• A01G3/053

  motor-driven · CPC title

• H01M10/613

  Cooling or keeping cold · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• A01G2003/0461

  with reciprocating knives · CPC title