Insertable wireless communication device for a power tool

Patent metadata

Field	Value
Publication number	US-11871509-B2
Application number	US-202318161520-A
Country	US
Kind code	B2
Filing date	Jan 30, 2023
Priority date	Nov 21, 2019
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A power tool may include a compartment in its housing and a first printed circuit board (PCB) located in the housing and electrically coupled to a first connector. An insertable wireless communication device may include a second electronic processor and an antenna that are each mounted to a second PCB. The insertable wireless communication device may be configured to be received in the compartment and may include a second connector configured to electrically and physically couple to the first connector. The insertable wireless communication device may be configured to wirelessly communicate with an external device. When the insertable wireless communication device is inserted into the compartment, a first conductive layer of the first PCB may be configured to be electrically coupled to the antenna via the first connector and the second connector such that the first conductive layer of the first PCB serves as a ground plane of the antenna.

First claim

What is claimed is:

1. A power tool comprising:
a power tool housing having a motor housing portion, a handle portion, and a battery pack receiving portion;
a motor within the motor housing portion and having a rotor and a stator, wherein the motor is configured to drive an output drive device;
a second electronic processor within the power tool housing and configured to control operation of the motor;
a compartment located in the power tool housing; and
a housingless insertable wireless communication device including a first electronic processor and an antenna, each of which is mounted to a first printed circuit board (PCB) of the housingless insertable wireless communication device, the housingless insertable wireless communication device configured to be received in the compartment, and the first electronic processor configured to communicatively couple with the second electronic processor when the housingless insertable wireless communication device is received in the compartment;
wherein the housingless insertable wireless communication device is configured to wirelessly communicate with an external device; and
wherein a first portion of the first PCB of the housingless insertable wireless communication device is not enclosed by a housing and remains exposed when the housingless insertable wireless communication device is not inserted into the compartment.

2. The power tool of claim 1 , wherein the first portion of the first PCB includes an edge of the first PCB, and wherein the edge of the first PCB is configured to engage with a mounting portion of the power tool when the housingless insertable wireless communication device is received in the compartment.

3. The power tool of claim 1 , wherein the first PCB of the housingless insertable wireless communication device includes a molding over a component mounted on a second portion of the first PCB, and wherein the first portion of the first PCB is not covered by the molding and remains exposed when the housingless insertable wireless communication device is not inserted into the compartment.

4. The power tool of claim 3 , wherein the molding (i) covers a portion of a first surface of the first PCB, (ii) wraps around an edge of the first PCB to a second surface of the first PCB that is opposite to the first surface, and (iii) covers a portion of the second surface of the first PCB, wherein the portion of the second surface that is covered by the molding is smaller than the portion of the first surface that is covered by the molding.

5. The power tool of claim 1 , wherein the housingless insertable wireless communication device includes an end cap located at a first end of the first PCB, the first end located closer to an exterior of the power tool housing than a second end of the first PCB opposite the first end when the housingless insertable wireless communication device is inserted in the compartment, wherein a height of the end cap in a direction perpendicular to a surface of the first PCB is taller than a height of the antenna in the direction perpendicular to the surface of the first PCB.

6. The power tool of claim 5 , wherein the first PCB includes a protruding tab configured to extend through the end cap and configured to be used to remove the housingless insertable wireless communication device from the compartment.

7. The power tool of claim 1 , further comprising a second PCB located in the power tool housing and electrically coupled to a second connector, wherein the first PCB includes a first connector configured to electrically and physically couple to the second connector.

8. The power tool of claim 7 , further comprising:
an enclosure located within the compartment, wherein the enclosure is configured to receive the housingless insertable wireless communication device, and wherein the second PCB is located in the enclosure.

9. The power tool of claim 7 , wherein, when the housingless insertable wireless communication device is inserted into the compartment:
a first conductive layer of the second PCB is configured to be electrically coupled to the antenna via the first connector and the second connector such that the first conductive layer of the second PCB serves as a ground plane of the antenna; and
the second electronic processor is configured to communicate with the first electronic processor to allow information to be transferred between the second electronic processor and the external device via the first electronic processor.

10. A method of communicating between a power tool and an external device, the method comprising:
inserting a housingless insertable wireless communication device into a compartment of a power tool housing of the power tool, the power tool including:
the power tool housing having a motor housing portion, a handle portion, and a battery pack receiving portion,
a motor within the motor housing portion and having a rotor and a stator, wherein the motor is configured to drive an output drive device;
a second electronic processor within the power tool housing and configured to control operation of the motor, and
the housingless insertable wireless communication device including a first electronic processor and an antenna each of which is mounted to a first printed circuit board (PCB) of the housingless insertable wireless communication device, wherein a first portion of the first PCB of the housingless insertable wireless communication device is not enclosed by a housing and remains exposed when the housingless insertable wireless communication device is not inserted into the compartment;

communicatively coupling the first electronic processor with the second electronic processor when the housingless insertable wireless communication device is received in the compartment; and
communicating with the external device using the housingless insertable wireless communication device.

11. The method of claim 10 , wherein the first portion of the first PCB includes an edge of the first PCB, and wherein inserting the housingless insertable wireless communication device into the compartment includes engaging the edge of the first PCB with a mounting portion of the power tool.

12. A power tool device comprising:
a power tool device housing having a battery pack receiving portion configured to receive a battery pack;
a powered element located in the power tool device housing and configured to be selectively coupled to power provided by the battery pack;
a second electronic processor within the power tool device housing and configured to control operation of the powered element;
a compartment located in the power tool device housing; and
a housingless insertable wireless communication device including a first electronic processor and an antenna, each of which is mounted to a first printed circuit board (PCB) of the housingless insertable wireless communication device, the housingless insertable wireless communication device configured to be received in the compartment, and the first electronic processor configured to communicatively couple with the second electronic processor when the housingless insertable wireless communication device is received in the compartment;
wherein the housingless insertable wireless communication device is configured to wirelessly communicate with an external device; and
wherein a first portion of the first PCB of the housingless insertable wireless communication device is not enclosed by a housing and remains exposed when the housingless insertable wireless communication device is not inserted into the compartment.

13. The power tool device of claim 12 , wherein the powered element includes a motor configured to drive an output

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Lienau John B
• Davis Anthony M
• Duncan Ian A
• Gordon Benjamin

Classifications

• H05K1/0243 Primary

  Printed circuits associated with mounted high frequency components · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• H01Q1/243

  with built-in antennas · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01R12/7058

  characterised by the movement, e.g. pivoting, camming or translating parallel to the PCB · CPC title