Hand-held power tool with detachable clamped connection

Patent metadata

Field	Value
Publication number	US-10710230-B2
Application number	US-201414270908-A
Country	US
Kind code	B2
Filing date	May 6, 2014
Priority date	May 6, 2013
Publication date	Jul 14, 2020
Grant date	Jul 14, 2020

Abstract

A hand-held power tool has a tool socket 2, a drive 5, 6 for driving the tool socket 2, and a housing 19 in which the drive 5, 6 is accommodated. A stationary part 14 of the drive 5 is connected by means of at least one detachable clamped connection 21 to at least one element 19, whereby the element 19 is the housing 19 or another stationary part of the drive 5, 6. The clamped connection 21 has a cylindrical pocket 22 in the one stationary part 14, a bushing 27 that is made of plastic and that is inserted into the cylindrical pocket 22, and it has a screw 30 that is screwed into the bushing 27.

First claim

What is claimed is:

1. A hand-held power tool comprising:
a tool socket;
a drive for driving the tool socket and having a first stationary part connected to or supporting a movable part of the drive;
a housing, the drive being arranged in the housing, the first stationary part being stationary with respect to the housing; and
at least one detachable clamped connection connecting the first stationary part to at least one element, the at least one element including at least one of the housing and another stationary part stationary with respect to the housing, the clamped connection having a cylindrical pocket in the first stationary part, a bushing made of plastic and inserted into the cylindrical pocket, and a screw screwed into the bushing.

2. The hand-held power tool as recited in claim 1 wherein the cylindrical pocket is arranged in a metal wall of the first stationary part.

3. The hand-held power tool as recited in claim 1 wherein the bushing is spread open in the radial direction by the screw.

4. The hand-held power tool as recited in claim 1 wherein the pocket has radial cutouts.

5. The hand-held power tool as recited in claim 1 wherein the bushing has hooks projecting radially outwards.

6. The hand-held power tool as recited in claim 1 wherein the bushing has slits running along a bushing axis.

7. The hand-held power tool as recited in claim 1 wherein the screw has a shank with a thread and a head, the one element has a hole, and the shank is guided through the hole and the head rests against the one element.

8. A hand-held power tool comprising:
a tool socket;
a drive for driving the tool socket, the drive having an exciter and a guide tube, the exciter moving in the guide tube;
a housing, the drive being arranged in the housing; and
at least one detachable clamped connection connecting the guide tube to the housing, the clamped connection having a cylindrical pocket in the guide tube, a bushing made of plastic and inserted into the cylindrical pocket, and a screw screwed into the bushing.

9. The hand-held power tool as recited in claim 8 wherein the housing includes a vertical plate, the guide tube being connected via the detachable clamped connection to the vertical plate.

10. The hand-held power tool as recited in claim 9 wherein the screw has a shank with a thread and a head, the vertical plate has a hole, and the shank is guided through the hole and the head rests against the vertical plate.

11. The hand-held power tool as recited in claim 8 wherein the bushing is spread open in the radial direction by the screw.

12. The hand-held power tool as recited in claim 8 wherein the pocket has radial cutouts.

13. The hand-held power tool as recited in claim 8 wherein the bushing has hooks projecting radially outwards.

14. The hand-held power tool as recited in claim 8 wherein the bushing has slits running along a bushing axis.

Assignees

• Hilti Ag

Inventors

• Holubarsch Markus
• Schmid Stefan

Classifications

• B25D16/00 Primary

  Portable percussive machines with superimposed rotation {, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit (combined percussion and rotary drilling adapted for earth drilling E21B6/00)} · CPC title

• B25D2250/085

  Elastic behaviour of tool components · CPC title

• B25D2222/54

  Plastics · CPC title

• B25D11/00

  Portable percussive tools with electromotor {or other motor} drive · CPC title

• B25D2250/361

  Use of screws or threaded connections · CPC title