US 12,138,698 B2Granted

Reciprocating saw

AssigneeHilti Aktiengesellschaft

InventorsMasatoshi Fukinuki, Yang Zhou, Hao Gao

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Abstract

A reciprocating saw includes a housing; a motor, disposed in a housing accommodating space and having a winding extending along a first straight direction; a first transmission wheel connected to the motor; and an input shaft driven by the motor to carry out reciprocating motion. The first transmission wheel is fixed in the accommodating space along a support shaft extending along a second straight direction, and is driven by the motor to rotate about a second straight line; the winding includes a first end and a second end along the first straight direction, a first plane perpendicular to the first straight line passes through a first end face of the first end and a second end perpendicular to the first straight line passes through a second end face of the second end; the first plane is parallel with the second plane, and the winding is located between the first plane and the second plane; at least part of the support shaft is located between the first plane and the second plane.

Claims21

Dependent claims

A reciprocating saw comprising:

a housing formed with an accommodating space and a first gripping part for a user to grip, the housing also formed with a second gripping part extending in a direction of a second gripping part straight line, the second gripping part formed with a gripping groove transverse to the direction of the second gripping part straight line;
an electric motor disposed in the accommodating space and including a winding extending in a direction of a first straight line;
a first transmission wheel disposed in the accommodating space and connected to the electric motor;
an output shaft reciprocating in a front-rear direction under a driving action of the electric motor;
the first transmission wheel being fixed in the accommodating space by a support shaft extending in a direction of a second straight line, and rotatable about the second straight line under the driving action of the electric motor;
the electric motor including a first end and a second end in the direction of the first straight line, and a first plane perpendicular to the first straight line and passing through a first end face of the first end being defined;
a second plane perpendicular to the first straight line and passing through a second end face of the second end being defined, the first plane being parallel to the second plane, and the winding being located between the first plane and the second plane;
the support shaft being at least partially located between the first plane and the second plane.

5 more elements

A reciprocating saw comprising:

a housing formed with an accommodating space and a first gripping part for a user to grip;
an electric motor disposed in the accommodating space and including a winding extending in a direction of a first straight line;
a first transmission wheel disposed in the accommodating space and connected to the electric motor;
an output shaft reciprocating in a front-rear direction under a driving action of the electric motor;
the first transmission wheel being fixed in the accommodating space by a support shaft extending in a direction of a second straight line, and rotatable about the second straight line under the driving action of the electric motor;
the electric motor including a first end and a second end in the direction of the first straight line, and a first plane perpendicular to the first straight line and passing through a first end face of the first end being defined;
a second plane perpendicular to the first straight line and passing through a second end face of the second end being defined, the first plane being parallel to the second plane, and the winding being located between the first plane and the second plane;
the support shaft being at least partially located between the first plane and the second plane;
wherein the accommodating space formed by the housing includes a first accommodating space and a second accommodating space;
the electric motor and the first transmission wheel being at least partially disposed in the first accommodating space, and the first gripping part being formed around the second accommodating space;
wherein an air inlet and an air outlet are formed on the housing, a fan being provided on the electric motor, and when the electric motor drives the fan to rotate, a cooling airflow flowing in through the air inlet and flowing out through the air outlet is formed;
wherein the first accommodating space and the second accommodating space are at least partially in communication with each other, and form a channel for the cooling airflow to pass through;
and
further comprising a circuit board separating at least parts of the first accommodating space and the second accommodating space and being at least partially located at a junction of the first accommodating space and the second accommodating space.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/297,812Filed 12 Dec 2019
Priority: CN 201811514888.512 Dec 2018
Published: US 2021/0394288 A123 Dec 2021
Granted: 12 Nov 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

B23D 49/16
Hand-held or hand-operated sawing devices with straight saw blades: actuated by electric or magnetic power or prime movers
B23D 51/01
Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts ; Carrying or…:…
B23D 49/162
Actuated by electric or magnetic power or prime movers: pad sawing devices
B23D 51/161
Of drives or feed mechanisms for straight tools, e.g. saw blades, or bows: with dynamic balancing