IP Library › Granted Patent US 8,757,288
Granted Patent B2
US 8,757,288 · App. 13/229,869 · Granted Jun 24, 2014

Handheld work apparatus having an electric drive motor

Inventors: Georg Heinzelmann (Winnenden, DE); Andreas Binder (Stuttgart, DE)
Assignee: Andreas Stihl AG & Co. KG
B25F5/02
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Quick Facts
Patent No.
US 8,757,288
App. No.
13/229,869
Granted
Jun 24, 2014
Kind
B2
Abstract

A handheld work apparatus having an electric drive motor has a battery pack ( 11 ) serving as a power supply unit for the drive motor. A receptacle for the battery pack ( 11 ) is provided on a housing ( 2 ) of the work apparatus. In order to simplify the mounting and arrange the battery pack ( 11 ) in a more favorable manner, a receiving compartment is provided in the housing ( 2 ) and a system carrier is arranged therein, to which electrical components ( 12, 13, 16 ) and electrical lines are affixed. A battery compartment ( 6 ) is formed in the system carrier ( 5 ) and contact elements for contacting the battery pack ( 11 ) are arranged on the system carrier ( 5 ). The electrical components ( 12, 13, 16 ) are interconnected and connected to the contact elements ( 18 ) by the lines located on the system carrier ( 5 ).

Claims (68)

1. A handheld work apparatus comprising:

an electric drive motor;

a battery pack configured as a power supply unit for said drive motor;

a housing having a receiving space;

a receiver arranged on said housing and being configured to receive said battery pack;

a system carrier arranged in said receiving space;

a plurality of electrical components attached to said system carrier;

a plurality of electrical lines attached to said system carrier;

said system carrier having a battery compartment formed therein;

a plurality of contact elements arranged on said system carrier and being configured to contact said battery pack;

said electrical lines being configured to interconnect said electrical components and connect the same with said contact elements;

said system carrier having a base and two parallel walls projecting up from said base;

said walls being configured to define said battery compartment;

said electrical components including an electronic control and a switch arrangement;

said walls having respective first ends facing away from said base;

a rim arranged along a peripheral edge of said first ends and said rim surrounding an insertion opening of said battery compartment; and,

said handheld work apparatus further comprising a receiving unit arranged on said rim and configured to receive said switch arrangement.

2. A handheld work apparatus comprising:

an electric drive motor;

a battery pack configured as a power supply unit for said drive motor;

a housing having a receiving space;

a receiver arranged on said housing and being configured to receive said battery pack;

a system carrier arranged in said receiving space;

a plurality of electrical components attached to said system carrier;

a plurality of electrical lines attached to said system carrier;

said system carrier having a battery compartment formed therein;

a plurality of contact elements arranged on said system carrier and being configured to contact said battery pack;

said electrical lines being configured to interconnect said electrical components and connect the same with said contact elements;

said system carrier having a base and two parallel walls projecting up from said base;

said walls being configured to define said battery compartment;

said base and said two walls together defining a U-shape;

said walls having respective first ends facing away from said base; and,

a rim arranged along a peripheral edge of said first ends and said rim surrounding an insertion opening of said battery compartment.

3. The handheld work apparatus of claim 2 , wherein said system carrier is made of plastic and is configured as a one-piece injection molded part.

4. The handheld work apparatus of claim 3 , wherein:

said system carrier has a plurality of recesses;

at least some of said electrical lines are pooled in a cable harness; and,

said cable harness is at least partially arranged in said recesses of said system carrier.

5. The handheld work apparatus of claim 2 , further comprising:

a blower housing configured to receive a blower wheel; and,

said blower housing being formed in part on said system carrier.

6. The handheld work apparatus of claim 2 , wherein said walls have respective sides facing each other, said handheld work apparatus further comprising:

guide ridges arranged on said sides of said walls; and,

said guide ridges being configured to define a gap between said battery pack and said walls.

7. The handheld work apparatus of claim 2 further comprising retaining elements arranged at said first ends of said walls and being configured for fixing said battery pack.

8. The handheld work apparatus of claim 2 , wherein said electrical components include an electronic control and a switch arrangement.

9. The handheld work apparatus of claim 8 , wherein:

said system carrier has a carrier plate on which said electronic control is arranged; and,

said carrier plate has a connecting plug.

10. The handheld work apparatus of claim 8 , further comprising:

a back handle arranged on said housing;

a throttle lever mounted in said back handle; and,

said throttle lever being mechanically connected to said switch arrangement.

11. The handheld work apparatus of claim 8 , said handheld work apparatus further comprising a receiving unit arranged on said peripheral edge and configured to receive said switch arrangement.

12. The handheld work apparatus of claim 2 , wherein said system carrier has additional electrical lines having connection terminals configured to connect to said drive motor.

13. The handheld work apparatus of claim 2 , further comprising:

a hand guard; and,

said electrical components including a switch configured to interrupt the power supply from said battery pack when said hand guard is activated.

14. The handheld work apparatus of claim 2 , wherein:

said battery compartment has a base;

said contact elements configured for contacting said battery pack are arranged on said base.

15. The handheld work apparatus of claim 2 , further comprising:

a contact plate;

said battery compartment having a base;

said contact plate being mounted on said base in a floating manner; and,

said contact elements being arranged on said contact plate.

16. The handheld work apparatus of claim 2 , further comprising stubs formed on said peripheral edge, said stubs having fixing eyelets at their free ends.

17. The handheld work apparatus of claim 3 , further comprising a push-out unit configured for said battery pack arranged on said base of said battery compartment.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 17, 2011
From: HEINZELMANN, GEORG; BINDER, ANDREAS
To: ANDREAS STIHL AG & CO. KG
Reel/Frame 027389/0590 →
Priority Claims (1)
DE 10 2010 045 993 · Sep 18, 2010 · national
Continuity (1)
Related Publication 20120067608A1 · Mar 22, 2012