GB2302202A - Battery unit for hand held machine tool - Google Patents

Battery unit for hand held machine tool Download PDF

Info

Publication number
GB2302202A
GB2302202A GB9611288A GB9611288A GB2302202A GB 2302202 A GB2302202 A GB 2302202A GB 9611288 A GB9611288 A GB 9611288A GB 9611288 A GB9611288 A GB 9611288A GB 2302202 A GB2302202 A GB 2302202A
Authority
GB
United Kingdom
Prior art keywords
battery unit
housing part
front wall
cover
machine tool
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.)
Granted
Application number
GB9611288A
Other versions
GB2302202B (en
GB9611288D0 (en
Inventor
Rainer Glauning
Gunter Flinspach
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB9611288D0 publication Critical patent/GB9611288D0/en
Publication of GB2302202A publication Critical patent/GB2302202A/en
Application granted granted Critical
Publication of GB2302202B publication Critical patent/GB2302202B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
    • 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
    • B25F5/02—Construction of casings, bodies or handles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

A battery unit for a hand machine tool is proposed, which is provided with a charge indicator (34). The battery unit (10) comprises a pot-shaped housing part (20) and a cover (21) which closes said housing part. The charge indicator (34) is disposed in a cavity (27) in a projection (23), which projects laterally from the housing part (10) and is delimited by a front wall (24) lying parallel to a side surface (20a) and by a substantially U-shaped frame (25) surrounding the front wall (24) on three sides. In an upward direction, the cavity (27) is covered by a cover strip (26) projecting from a cover (21).

Description

Batterv unit for a hand machine tool Background art The invention proceeds from a battery unit for a hand machine tool according to the preamble of claim 1.
A battery unit is already known (DE 35 02 449 Al), which is used to receive rechargeable batteries and may be fitted onto a hand machine tool. The battery unit is composed of two housing shells having a longitudinally extending parting plane.
Furthermore, a battery unit is already known commercially, which is provided with a charge indicator.
Advantages of the invention The battery unit according to the invention having the characterizing features of claim 1 has the advantage of being of a compact and handy construction, the charge indicator being disposed on the battery unit in such a way that the size of a housing of the battery unit adapted to the rechargeable batteries to be accommodated therein need be increased no more than is necessary.
By virtue of the measures described in the sub-claims, advantageous developments and improvements of the battery unit indicated in claim 1 are possible.
Drawings An embodiment of the invention is illustrated in the drawings and explained in greater detail in the following description.
Of the drawings, Figure 1 is a perspective view of a battery unit and Figure 2 a partial plan view of the battery unit with the cover removed.
Description of the embodiment In Figure 1, 10 denotes a battery unit intended for fitting onto a hand machine tool. To said end, the battery unit 10, also referred to as a battery pack, has guide grooves 11 which are insert able into corresponding guide rails on the hand machine tool. For locking purposes, detent webs 12a, b having guide bevels 13 on the insertion side are provided on the battery unit 10. Viewed in insertion direction, there are in each case two detent webs 12a, b disposed one behind the other so that a double locking action is guaranteed for increased protection against accidental detachment of the battery unit 10. A first detent web 12a is used for preliminary or auxiliary locking and a second detent web 12b is provided for locking in the actual operating position.Further provided on the battery unit 10 is a plug-in element 16 for electrically contacting rechargeable batteries 17, which are housed in the battery unit 10, with a drive motor of the hand machine tool.
The battery unit 10 is of a pot-type style of construction, having a pot-shaped housing part 20 which is closed by means of a cover 21. To said end, the cover 21 is screwed at connecting points 22 to the housing part 20. Integrally formed on one side surface 20a of the battery unit 10 is a projection 23 protruding substantially in the manner of a balcony, which is formed towards the front by a front wall 24 extending parallel to the side surface and by a substantially U-shaped frame 26 surrounding the front wall 24 on three sides. The projection 23 is covered at the top by a cover strip 26 projecting from the cover 21. Formed in the front wall 24 are various cutout windows 29q which are covered by a transparent film 30 (Figure 2). The film 30 may be printed with symbols and is designed to be at least partially translucent.As a protection for the film, the frame 25 and the cover strip 26 project out beyond the front wall 24.
In the projection 23 there is a cavity 27 which, when the cover 21 is removed, is accessible from above. Inserted into the cavity 27 is a printed-circuit board 31 with electronic components, i.a. a plurality of light-emitting diodes 32 and a momentary-contact pushbutton 33. The light-emitting diodes 32 are visible from the outside through the cutout windows 29a.
To said end, the film in the region of the cutout windows 29a is translucent for the light of the light-emitting diodes 32.
The momentary-contact pushbutton 33 is operable through the cutout window 29b.
The parts 31, 32, 33, together with further components which are not shown in detail, form an electronic charge indicator 34 which, after operation of the momentary-contact pushbutton 33, informs the user about the discharge degree of the batteries 17. The pot-shaped construction of the battery unit 10, together with the projection 23 having the upwardly open cavity 27, makes it easy to insert the charge indicator 34 from above into the housing part 20.

Claims (4)

Claims
1. Battery unit for a hand machine tool, the housing (20, 21) of which is used to receive rechargeable batteries (17) and houses a charge indicator (34) which is visible from the outside, characterized in that the battery unit (10) comprises a pot-shaped housing part (20) and a cover (21) which closes said housing part, and that disposed in one side surface (20a) of the pot-shaped housing part (20) and projecting out from said housing part is a balcony-like projection (23), which is formed by a front wall (24) extending parallel to the side surface (20a) and by a substantially U-shaped frame (25) surrounding the front wall (24) on three sides and in which an upwardly open cavity (27) is formed, which is used to receive the charge indicator (34) and, when the battery unit (10) has been assembled, is covered by a projecting cover strip (26) formed on the cover (21).
2. Battery housing according to claim 1, characterized in that provided in the front wall (24) are cutout windows (29a, b) which are covered by a transparent film (30).
3. Battery housing according to claim 1, characterized in that the frame (25) and the cover strip (26) project in a forward direction beyond the front wall (24).
4. A battery unit substantially as herein described with reference to the accompanying drawings.
GB9611288A 1995-06-14 1996-05-30 Battery unit for a hand machine tool Expired - Fee Related GB2302202B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29509512U DE29509512U1 (en) 1995-06-14 1995-06-14 Battery assembly for a hand machine tool

Publications (3)

Publication Number Publication Date
GB9611288D0 GB9611288D0 (en) 1996-07-31
GB2302202A true GB2302202A (en) 1997-01-08
GB2302202B GB2302202B (en) 1997-07-30

Family

ID=8009166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9611288A Expired - Fee Related GB2302202B (en) 1995-06-14 1996-05-30 Battery unit for a hand machine tool

Country Status (4)

Country Link
JP (1) JPH097556A (en)
CN (1) CN1100354C (en)
DE (1) DE29509512U1 (en)
GB (1) GB2302202B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0944153A2 (en) * 1998-03-18 1999-09-22 Makita Corporation Power tool charging system having a charge level indicator and charge control functions
WO2006008057A1 (en) * 2004-07-15 2006-01-26 Marquardt Gmbh Electric tool, particularly battery-operated electric tool
WO2006040204A1 (en) * 2004-10-08 2006-04-20 Robert Bosch Gmbh Device for locking a battery pack in a guide in an electric tool
EP2008776A1 (en) * 2007-06-27 2008-12-31 Marquardt GmbH Electric tool, in particular rechargeable battery electric tool
US7879479B2 (en) 2006-04-07 2011-02-01 Robert Bosch Gmbh Battery pack utilizing integrally joined locking and holding means
EP2871704A4 (en) * 2012-10-29 2015-08-05 Lg Chemical Ltd Battery module including led device on pcb
EP3588663A4 (en) * 2017-07-10 2020-08-19 LG Chem, Ltd. Battery module case and battery module including same
US11641795B2 (en) 2018-09-27 2023-05-09 Nanjing Chervon Industry Co., Ltd. Lawn mower
USD987691S1 (en) 2018-09-27 2023-05-30 Nanjing Chervon Industry Co., Ltd. Mower blade assembly
USD995569S1 (en) 2019-04-18 2023-08-15 Nanjing Chervon Industry Co., Ltd. Mower blade assembly

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7513324B2 (en) * 2005-08-26 2009-04-07 Mattel, Inc. Children's ride-on vehicles having battery charge indicator assemblies
DE102005000135A1 (en) * 2005-10-10 2007-04-12 Hilti Ag Battery pack with charge level indicator
JP5662105B2 (en) 2010-10-26 2015-01-28 株式会社マキタ Secondary battery pack
JP2015028839A (en) * 2011-11-25 2015-02-12 三洋電機株式会社 Battery pack
US20160378097A1 (en) * 2015-06-25 2016-12-29 Ingersoll-Rand Company Security lock-out for power tools
JP6474846B2 (en) * 2017-03-17 2019-02-27 株式会社マキタ Battery pack for electric tools

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248942A (en) * 1980-04-28 1981-02-03 Anderson Power Products, Inc. Electrical device with bi-level battery state-of-charge indicator
GB2253513A (en) * 1989-10-11 1992-09-09 Alan Roy Cooke Portable power supplies
GB2266003A (en) * 1992-03-31 1993-10-13 Sony Corp Rechargeable battery status indicators
JPH0714562A (en) * 1993-06-25 1995-01-17 Sony Corp Battery and battery pac

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248942A (en) * 1980-04-28 1981-02-03 Anderson Power Products, Inc. Electrical device with bi-level battery state-of-charge indicator
GB2253513A (en) * 1989-10-11 1992-09-09 Alan Roy Cooke Portable power supplies
GB2266003A (en) * 1992-03-31 1993-10-13 Sony Corp Rechargeable battery status indicators
JPH0714562A (en) * 1993-06-25 1995-01-17 Sony Corp Battery and battery pac

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0944153A2 (en) * 1998-03-18 1999-09-22 Makita Corporation Power tool charging system having a charge level indicator and charge control functions
EP0944153A3 (en) * 1998-03-18 2000-11-08 Makita Corporation Power tool charging system having a charge level indicator and charge control functions
US6229280B1 (en) 1998-03-18 2001-05-08 Makita Corporation Power tool charging system having a charge level indicator and charge control functions
WO2006008057A1 (en) * 2004-07-15 2006-01-26 Marquardt Gmbh Electric tool, particularly battery-operated electric tool
WO2006040204A1 (en) * 2004-10-08 2006-04-20 Robert Bosch Gmbh Device for locking a battery pack in a guide in an electric tool
US7455544B2 (en) 2004-10-08 2008-11-25 Robert Bosch Gmbh Device for locking a battery pack in a guide of a power tool
US7879479B2 (en) 2006-04-07 2011-02-01 Robert Bosch Gmbh Battery pack utilizing integrally joined locking and holding means
EP2008776A1 (en) * 2007-06-27 2008-12-31 Marquardt GmbH Electric tool, in particular rechargeable battery electric tool
EP2871704A4 (en) * 2012-10-29 2015-08-05 Lg Chemical Ltd Battery module including led device on pcb
US9312574B2 (en) 2012-10-29 2016-04-12 Lg Chem, Ltd. Battery module including LED element on PCB
EP3588663A4 (en) * 2017-07-10 2020-08-19 LG Chem, Ltd. Battery module case and battery module including same
US11264654B2 (en) 2017-07-10 2022-03-01 Lg Chem, Ltd. Battery module case and battery module comprising the same
US11641795B2 (en) 2018-09-27 2023-05-09 Nanjing Chervon Industry Co., Ltd. Lawn mower
USD987691S1 (en) 2018-09-27 2023-05-30 Nanjing Chervon Industry Co., Ltd. Mower blade assembly
USD995567S1 (en) 2018-09-27 2023-08-15 Nanjing Chervon Industry Co., Ltd. Mower blade assembly
USD995568S1 (en) 2018-09-27 2023-08-15 Nanjing Chervon Industry Co., Ltd. Mower blade assembly
USD996471S1 (en) 2018-09-27 2023-08-22 Nanjing Chervon Industry Co., Ltd. Mower blade assembly
USD996470S1 (en) 2018-09-27 2023-08-22 Nanjing Chervon Industry Co., Ltd. Mower blade assembly
USD997998S1 (en) 2018-09-27 2023-09-05 Nanjing Chervon Industry Co., Ltd. Mower blade
US11917939B2 (en) 2018-09-27 2024-03-05 Nanjing Chervon Industry Co., Ltd. Blade assembly for a lawn mower
US11937545B2 (en) 2018-09-27 2024-03-26 Nanjing Chervon Industry Co., Ltd. Blade assembly for a lawn mower
USD995569S1 (en) 2019-04-18 2023-08-15 Nanjing Chervon Industry Co., Ltd. Mower blade assembly

Also Published As

Publication number Publication date
GB2302202B (en) 1997-07-30
DE29509512U1 (en) 1996-10-17
CN1100354C (en) 2003-01-29
GB9611288D0 (en) 1996-07-31
JPH097556A (en) 1997-01-10
CN1144976A (en) 1997-03-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110530