Angle grinder

• US 6,669,542 B1
• Filed: 08/27/2001
• Issued: 12/30/2003
• Est. Priority Date: 01/10/2000
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Dammerz, Ralph, Sulea, Maria-Margaretta, Walz, Roland, Heess, Stefan, Stierle, Peter
• Primary Examiner(s): Nguyen, George
• Assistant Examiner(s): Grant, Alvin J.
• Application Number:
  US09/914,369
• Time in Patent Office: 855 Days
• Field of Search: 451/352, 451/344, 451/359, 451/358
• US Class Current: 451/352
• CPC Class Codes: B24B 23/028 Angle tools
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence

Abstract

An angle grinder with a housing 2 can be produced more economically by providing that it has a mounting shell 3, a cap shell 4, and an insert part 1 between these two shells. The insert part 1 is equipped with a first fixation device 10 and a second fixation device 11 for fixation between the mounting shell 3 and the cap shell 4, and it has a spindle locking receptacle 12 and spindle bearing receptacle 13. The mounting shell 3 has a first fixation means 30, which is engaged by the first fixation device 10 of the insert part 1. The cap shell 4 has a second fixation means 40, which engages the fixation device 10 of the insert part 1. The insert part 1 also has a second fixation device 11, which can be brought into engagement with suitable means on the mounting shell 3 and the cap shell 4.

Claims

1. An angle grinder, having a housing (2) comprising two half-shells (3, 4), for receiving both a motor (50) and a gear (55) with a drive spindle (53), characterized in that an insert part (1) for reinforcing the housing is disposed between the half-shells (3, 4) in the region of the gear (53), wherein the insert part (1) has a first fixation device (10) and a second fixaton device (11) for fixing the insert part (1) between a mounting shell (3) and cap shell (4) of the housing (2) and a spindle locking receptacle (12) with a spindle bearing receptacle.

2. The angle grinder of claim 1, characterized in that the spindle bearing receptacle (13) is a blind bore (130), and/or the spindle locking receptacle (12) is a through hole (120).

3. The angle grinder of claim 2, characterized in that the base body (14) has an aperture (140), which is oriented perpendicular to the through hole (120).

4. The angle grinder of claim 1, characterized in that it has a base body (14), in which the spindle bearing receptacle (13) and the spindle locking receptacle (12) are disposed parallel to one another.

5. A method for assembling an angle grinder, wherein said angle grinder has a housing (2) comprising two half-shells (3, 4), for receiving both a motor (50) and a gear (55) with a drive spindle (53), wherein an insert part (1) for reinforcing the housing is disposed between the half-shells (3, 4) in the region of the gear (53), said method having the following steps:

inserting the insert part (1) into a mounting shell (3), so that the first fixation device (10) of the insert part (10) is in engagement with first fixation means (30) of the mounting shell (3), and a second fixation device (11) of the insert part (1) is in engagement with a first screw dome (31) of the mounting shell (3), and in particular a first centering device (16) is in engagement with a first centering means (32);

placing a cap shell (4) on the preassembled component, so that the first fixation device (10) of the insert part (1) is in engagement with second fixation means (40) of the cap shell (4), and the second fixation device (11) of the insert part (1) is in engagement with a second screw dome of the cap shell (4), and in particular a second centering device (17) is in engagement with a second centering means (42);

positionally fixing the cap shell (4) relative to the mounting shell (3), in particular by screwing a screw (5) into the two screw domes (31, 41) and through the insert part (1).

6. An angle grinder, having a housing (2) comprising two half-shells (3, 4), for receiving both a motor (50) and a gear (55) with a drive spindle (53), characterized in that an insert part (1) for reinforcing the housing is disposed between the half-shells (3, 4) in the region of the gear (53), and further comprising an outrigger (15), on which a first fixation device (10) is disposed, wherein a cross section of the outrigger is preferably in the shape of a double T, so that the first fixation means (30) of a mounting shell (3) and a second fixation means (40) of a cap shell (4) can engage two indentations (100, 101) of the first fixaton device (10).

7. A housing (2) having an insert part (1) for reinforcing the housing, said housing (2) having a mounting shell (3), whose first fixation means (30) engages the first fixation device (10) of the insert part (1), and having a first screw dome (31), which is disposed in a line with the through hole (120) of the insert part (1), and having a cap shell (4), whose second fixation means (40) engages the first fixation device (10) of the insert part (1), and having a second screw dome (41), which is disposed in a line with the through hole (120) of the insert part (1), so that a screw (5) can be passed through the two screw domes (31, 41) and the through hole (120) of the insert part (1).

8. The housing (2) of claim 7, characterized in that the outrigger (15) of the insert part (1) rests over a large surface area on both the mounting shell (3) and the cap shell (4).

9. The housing (2) of claim 7, characterized in that the insert part (1), in the region of its through hole (120), has first and second centering devices (16, 17), oriented toward each of the screw domes (31, 41), which devices are in engagement with first and second centering means (32, 42) of the screw domes (31, 41).