IP Library › Granted Patent US 11,472,018
Granted Patent B2
US 11,472,018 · App. 16/872,844 · Granted Oct 18, 2022

Power tool

Inventor: Fumitoshi Numata (Anjo, JP)
Assignee: MAKITA CORPORATION
B25F5/026B24B23/005B24B23/02B24B47/12
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Quick Facts
Patent No.
US 11,472,018
App. No.
16/872,844
Granted
Oct 18, 2022
Kind
B2
Abstract

A power tool includes a handle detector that is less susceptible to vibrations and is highly durable and reliable. A grinder includes a brushless motor, an inner housing accommodating the brushless motor, a rubber cylinder, a spindle driven by the brushless motor, and an outer housing enclosing the inner housing and holding the inner housing with the rubber cylinder in between. The outer housing includes a handle mount and at least one handle detector that detects a side handle attached.

Claims (57)

1. A power tool capable of detecting a side handle attached, the power tool comprising:

a motor;

an inner housing accommodating the motor;

an elastic member;

a final output shaft driven by the motor;

an outer housing enclosing the inner housing and holding the inner housing with the elastic member in between, the outer housing including

a mount to which the side handle is attachable, and

at least one handle detector configured to detect the side handle attached; and

a connecting shaft parallel to the final output shaft;

wherein the inner housing is connected to the outer housing with the connecting shaft.

2. The power tool according to claim 1 , wherein

the at least one handle detector detects the side handle attached, in response to an attaching operation of the side handle.

3. The power tool according to claim 2 , wherein

the at least one handle detector includes a plurality of handle detectors.

4. The power tool according to claim 2 , wherein

the at least one handle detector operates in a contactless manner.

5. The power tool according to claim 2 , wherein

the at least one handle detector includes

a detection member configured to come in contact with the side handle when the side handle is attached,

a sensor located behind the detection member having a front portion swingable about a pivot to detect the detection member that swings when coming in contact with the side handle, and

a receiver located between the pivot and the sensor to receive the side handle.

6. The power tool according to claim 1 , wherein

the at least one handle detector includes a plurality of handle detectors.

7. The power tool according to claim 6 , wherein

the plurality of handle detectors are located in right and left portions of the outer housing.

8. The power tool according to claim 7 , wherein

the at least one handle detector operates in a contactless manner.

9. The power tool according to claim 7 , wherein

the at least one handle detector includes

a detection member configured to come in contact with the side handle when the side handle is attached,

a sensor located behind the detection member having a front portion swingable about a pivot to detect the detection member that swings when coming in contact with the side handle, and

a receiver located between the pivot and the sensor to receive the side handle.

10. The power tool according to claim 6 , wherein

the at least one handle detector operates in a contactless manner.

11. The power tool according to claim 6 , wherein

the at least one handle detector includes

a detection member configured to come in contact with the side handle when the side handle is attached,

a sensor located behind the detection member having a front portion swingable about a pivot to detect the detection member that swings when coming in contact with the side handle, and

a receiver located between the pivot and the sensor to receive the side handle.

12. The power tool according to claim 1 , wherein

the at least one handle detector operates in a contactless manner.

13. The power tool according to claim 1 , further comprising:

a handle integral with the outer housing.

14. A power tool capable of detecting a side handle attached, the power tool comprising:

a motor;

an inner housing accommodating the motor;

an elastic member;

a final output shaft driven by the motor;

an outer housing enclosing the inner housing and holding the inner housing with the elastic member in between, the outer housing including

a mount to which the side handle is attachable, and

at least one handle detector configured to detect the side handle attached, wherein

the at least one handle detector includes

a detection member configured to come in contact with the side handle when the side handle is attached,

a sensor located behind the detection member having a front portion swingable about a pivot to detect the detection member that swings when coming in contact with the side handle, and

a receiver located between the pivot and the sensor to receive the side handle.

15. The power tool according to claim 14 , wherein

the at least one handle detector includes a dust cover covering the sensor.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 12, 2020
From: NUMATA, FUMITOSHI
To: MAKITA CORPORATION
Reel/Frame 052640/0483 →
Priority Claims (1)
JP JP2019-108152 · Jun 10, 2019 · national
Continuity (1)
Related Publication 20200384627A1 · Dec 10, 2020
Cited By (1)
US 1,073,430