WO2019061088A1 - Plaque pour le refroidissement d'un outil électrique - Google Patents

Plaque pour le refroidissement d'un outil électrique Download PDF

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Publication number
WO2019061088A1
WO2019061088A1 PCT/CN2017/103734 CN2017103734W WO2019061088A1 WO 2019061088 A1 WO2019061088 A1 WO 2019061088A1 CN 2017103734 W CN2017103734 W CN 2017103734W WO 2019061088 A1 WO2019061088 A1 WO 2019061088A1
Authority
WO
WIPO (PCT)
Prior art keywords
power tool
cooling plate
housing
metallic
pcb
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/103734
Other languages
English (en)
Inventor
Eric Lennings
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Globe Co Ltd
Original Assignee
Changzhou Globe Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changzhou Globe Co Ltd filed Critical Changzhou Globe Co Ltd
Priority to PCT/CN2017/103734 priority Critical patent/WO2019061088A1/fr
Priority to CN201711051000.4A priority patent/CN107570799B/zh
Priority to CN201721425072.6U priority patent/CN207521809U/zh
Publication of WO2019061088A1 publication Critical patent/WO2019061088A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D57/00—Sawing machines or sawing devices not covered by one of the preceding groups B23D45/00 - B23D55/00
    • B23D57/02—Sawing machines or sawing devices not covered by one of the preceding groups B23D45/00 - B23D55/00 with chain saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/008—Cooling means

Definitions

  • the present invention relates generally to power tools and more specific to cooling of power tools, such as chainsaws, trimmers, blowers, hedge trimmers and the like.
  • cooling in power tools is provided by incorporating turbines and/or ventilators inside the housing of the power tool, which create an air circulation around the controller and the PCB.
  • turbines and ventilators increase the complexity and cost of the power tools. Turbines and ventilators also require energy, which will drain the scarce power resource of the batteries used for power tools.
  • EP 1 961 528 Another solution to the cooling problem is disclosed in EP 1 961 528, which primarily is directed to the cooling of the electrical motor, but also to cooling of components on an electronic control card.
  • the electrical motor is enclosed by a housing made of light metal alloy.
  • the housing comprises at least two parts.
  • the electrical motor is in contact with the surface of the housing in order to provide static cooling of a power toll in form of a power tool.
  • the housing may be provided with cooling fins.
  • An object of the present invention is to accomplish a power tool having efficient cooling, while at the same time keeping the complexity of the power tool as low as possible.
  • a power tool comprising a non-metallic housing comprising an electrical motor and a battery.
  • the electrical motor is controlled by a controller provided on a Printed Circuit Board, PCB, wherein a surface of the PCB is in contact with a metallic cooling plate arranged on a bottom side of the non-metallic housing.
  • the metallic cooling plate is made of aluminium or alloys thereof.
  • the metallic cooling plate is made of magnesium or alloys thereof.
  • the metallic cooling plate may further comprise a cavity, the size of which is adapted to receive the PCB.
  • the metallic cooling plate is provided with vent holes. A part of these vent holes may be provided inside the cavity. In order to prevent dust the vent holes may furthermore be covered by or provided with a filter on a side of the metallic cooling plate that is directed to the inside of the housing.
  • the housing of the power tool is made of plastic.
  • Fig. 1 is a schematic side view of a power tool, exemplified as a chainsaw, according to an embodiment.
  • Fig. 2 is perspective view looking at the bottom side of the power tool.
  • Fig. 3 is a metallic cooling plate according to an embodiment.
  • Fig. 4 is a metallic cooling plate according to an embodiment.
  • Fig. 5 is a metallic cooling plate according to an embodiment.
  • Fig. 6 is a schematic view of a printed circuit board and its components.
  • Fig. 1 a schematic side view of a power tool according to an embodiment of the present invention is shown. It should be understood that even if Fig. 1 exemplifies the power tool with an electrical chainsaw, the present invention is not limited to this.
  • An electrical chainsaw is merely an example of a power tool. Other examples are trimmers, blowers, hedge trimmers etc.
  • the electrical chainsaw tool comprises a cutting chain 28 that is rotatably mounted on a chain guide 26. In other embodiments, the cutting chain is substituted by other tools.
  • the cutting chain 28 is rotated by means of a drive pinion.
  • the drive pinion is driven by an electrical motor 22, which is powered by a battery 24.
  • the output of the electrical motor 22 is controlled by a controller provided on a Printed Circuit Board, PCB 10.
  • PCB 10 Printed Circuit Board
  • Some of the components 12 of the controller are schematically depicted in the Fig. 1.
  • the electrical motor 22, the battery 24, the PCB 10 and the components provided thereon are all enclosed by a housing 20.
  • the housing 20 is made of a non-metallic material preferably plastic or composite or the like.
  • the aim of the present invention is to provide cooling for the PCB 10 and all the components 12 thereon.
  • the described housing 20 is representative for a general housing of a power tool.
  • Fig. 2 a perspective view of the power tool is shown, looking at the bottom side 21 of the power tool.
  • the same reference numerals denote the same objects as in Fig. 1. They are therefore not repeated here once again.
  • a metallic cooling plate 2 It is the metallic cooling plate 2 that is used to cool the PCB 10 and its components 12. Different embodiments of the cooling plate 2 are shown in more detail in Figs. 3 to 5. A more detailed view of the PCB 10 and its components 12 is shown in Fig. 6.
  • the cooling plate 2 will be described in more detail.
  • the cooling plate 2 is essentially square-shaped.
  • these shapes are only examples of how a cooling plate 2 may be configured.
  • the important thing is that the shape of the cooling plate 2 is adapted to the bottom side 21 of the housing 20 and to the PCB 10, which it is cooling.
  • the cooling plate 2 comprises a cavity 4, the size and depth of which is adapted to receive the PCB 10.
  • the cooling plate 2 and/or the cavity 4 may furthermore also be adapted to receive or be in direct contact with some of the components 12. This may provide more cooling effect directly to a specific component 12 if it is desired.
  • a processer may be provided with a cooling flange that is in direct contact with the cooling plate 2.
  • the cooling plate 2 may furthermore be provided with vent holes 26, which allows that air from the outside reaches inside the housing 20 and cools the PCB 10.
  • the vent holes may be designed in numerous different way when it comes to size, number and where on the cooling plate 2 they are provided. Different examples of vent hole 6 configurations are shown throughout Fig. 3 to Fig. 5. For example, in Fig. 5 a part of the vent holes 6 are provided in the cavity 4. It is believed to be within the capability of a person skilled in the art to design the size, number and place of the vent holes 6.
  • vent holes 6 may be covered by a filter on a side of the metallic cooling plate 2 that is directed towards the inside of the housing 20.
  • the filter is used to prevent dust and other particles to enter into the housing 20 of the power tool.
  • the cooling plate 2 may also comprise through holes 8, which are used to fasten the cooling plate 2 to the bottom side 21 of the housing 20.
  • the number of through holes 8 is, as recognized by a person skilled in the art, adapted to the geometry of the cooling plate 2 and the geometry of the bottom side 2 of the housing 20. Different examples of through holes 8, and placement thereof are shown throughout the Figs.
  • the cooling plate 2 is made of metal.
  • the cooling plate 2 is made of aluminium or alloys thereof.
  • the cooling plate 2 is made of magnesium or alloys thereof.
  • Fig. 6 a more detailed view of the PCB 10 and its components 12 are shown.
  • the components 12 constitute different parts of a controller, such as a processor, a memory etc. that are used to control the electrical motor 22.
  • the term “comprises/comprising” does not exclude the presence of other elements or steps.
  • a plurality of means or elements may be implemented by e.g. a single unit or processor.
  • individual features may be included in different claims, these may possibly advantageously be combined, and the inclusion in different claims does not imply that a combination of features is not feasible and/or advantageous.
  • singular references do not exclude a plurality.
  • the terms “a” , “an” , “first” , “second” etc do not preclude a plurality. Reference signs in the claims are provided merely as a clarifying example and shall not be construed as limiting the scope of the claims in any way.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

Un outil électrique comprend un boîtier non métallique (20) comprenant un moteur électrique (22) et une batterie (24). Le moteur électrique (24) est commandé par un dispositif de commande disposé sur une carte de Circuit imprimé, PCB, (10), une surface de la PCB (10) étant en contact avec une plaque de refroidissement métallique (2) agencée sur un côté inférieur (21) du boîtier non métallique (20).
PCT/CN2017/103734 2017-09-27 2017-09-27 Plaque pour le refroidissement d'un outil électrique Ceased WO2019061088A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2017/103734 WO2019061088A1 (fr) 2017-09-27 2017-09-27 Plaque pour le refroidissement d'un outil électrique
CN201711051000.4A CN107570799B (zh) 2017-09-27 2017-10-31 电动工具
CN201721425072.6U CN207521809U (zh) 2017-09-27 2017-10-31 电动工具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/103734 WO2019061088A1 (fr) 2017-09-27 2017-09-27 Plaque pour le refroidissement d'un outil électrique

Publications (1)

Publication Number Publication Date
WO2019061088A1 true WO2019061088A1 (fr) 2019-04-04

Family

ID=61041484

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/103734 Ceased WO2019061088A1 (fr) 2017-09-27 2017-09-27 Plaque pour le refroidissement d'un outil électrique

Country Status (2)

Country Link
CN (2) CN207521809U (fr)
WO (1) WO2019061088A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4491339A1 (fr) * 2023-07-10 2025-01-15 Andreas Stihl AG & Co. KG Scie à chaîne motorisée ou tronçonneuse
US12611760B2 (en) 2023-07-10 2026-04-28 Andreas Stihl Ag & Co. Kg Hand-guided work apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019061088A1 (fr) * 2017-09-27 2019-04-04 Changzhou Globe Co., Ltd. Plaque pour le refroidissement d'un outil électrique
EP3765226B1 (fr) 2018-03-16 2023-11-01 Milwaukee Electric Tool Corporation Serre-lame pour outil électrique, outil électrique alternatif et procédé d'utilisation d'un tel serre-lame
USD887806S1 (en) 2018-04-03 2020-06-23 Milwaukee Electric Tool Corporation Jigsaw
CN213646136U (zh) 2018-04-03 2021-07-09 米沃奇电动工具公司 电动工具
CN110571982B (zh) * 2018-06-06 2021-05-07 车王电子股份有限公司 电动工具
EP4167713A4 (fr) * 2020-06-19 2024-09-11 Milwaukee Electric Tool Corporation Taille-bordure

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WO2013076373A1 (fr) * 2011-11-23 2013-05-30 Kemppi Oy Dispositif de soudage et/ou de coupe fonctionnant sur batterie et structure de refroidissement
US20150156919A1 (en) * 2013-11-29 2015-06-04 Abb Oy Electric apparatus
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1240277A (zh) * 1998-06-24 2000-01-05 台达电子工业股份有限公司 改善散热方式的小型化的携带式电脑的电源供应系统
CN101668616A (zh) * 2007-02-26 2010-03-10 佩朗股份有限公司 静态冷却的电动链锯和用于实现所述冷却的方法
CN202292694U (zh) * 2011-10-18 2012-07-04 常州格力博工具有限公司 一种电动工具
WO2013076373A1 (fr) * 2011-11-23 2013-05-30 Kemppi Oy Dispositif de soudage et/ou de coupe fonctionnant sur batterie et structure de refroidissement
US20150156919A1 (en) * 2013-11-29 2015-06-04 Abb Oy Electric apparatus
CN205724951U (zh) * 2016-03-28 2016-11-23 施京京 一种带有散热结构的无线充电底座

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4491339A1 (fr) * 2023-07-10 2025-01-15 Andreas Stihl AG & Co. KG Scie à chaîne motorisée ou tronçonneuse
US12611760B2 (en) 2023-07-10 2026-04-28 Andreas Stihl Ag & Co. Kg Hand-guided work apparatus

Also Published As

Publication number Publication date
CN107570799A (zh) 2018-01-12
CN107570799B (zh) 2024-06-18
CN207521809U (zh) 2018-06-22

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