Hand-held machine tool

Patent metadata

Field	Value
Publication number	US-9905966-B2
Application number	US-201314406500-A
Country	US
Kind code	B2
Filing date	May 29, 2013
Priority date	Jun 13, 2012
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A hand-held machine tool has an integrated tool or a tool holder to receive a tool. An electric motor drives the tool or the tool holder. A battery pack for supplying power to the electric motor can be pushed into a guide in a first direction. Electrical contacts are disposed in a contact holder being offset with respect to each other in a second direction. A mounting for the contact holder holds the contact holder so that it can move in the first direction-and in a third direction with respect to the mounting. The first direction, second direction and third direction are orthogonal to each other in pairs. A spring acts upon the contact holder with a force opposite to the first direction. An end face oriented opposite to the first direction is provided with a centerer which cooperates with a centering support on the battery pack in order to prevent a relative movement between the end face and the battery pack in the third direction.

First claim

What is claimed is:

1. A hand-held machine tool comprising:
an integrated tool or a tool holder for accommodating a tool;
an electric motor for driving the integrated tool or the tool holder;
a guide insertable into a battery pack along a first direction for supplying the electric motor with power;
a contact holder, electrical contacts situated in the contact holder and offset from each other along a second direction;
a suspension for the contact holder, the contact holder being movable with respect to the suspension along the first direction and along a third direction;
the first direction, the second direction and the third direction being orthogonal to each other in pairs; and
a spring applying a force to the contact holder against the first direction, a front face pointing against the first direction being provided with a centerer cooperating with a centering support on the battery pack to suppress a relative movement along the third direction between the front face and the battery pack.

2. The hand-held machine tool as recited in claim 1 wherein the centerer includes a mandrel projecting in the first direction and having a surface inclined with respect to the third direction or a notch recessed with respect to the first direction and has a notch surface inclined with respect to the third direction.

3. The hand-held machine tool as recited in claim 2 wherein the contact holder, together with the mandrel or the notch, is pressed against the battery pack, and the front face is otherwise spaced apart from the battery pack.

4. The hand-held machine tool as recited in claim 1 wherein the contact holder is movable along the first direction for a travel distance between 2 mm and 5 mm.

5. The hand-held machine tool as recited in claim 1 wherein the contact holder is movable along the third direction for a travel distance between 0.5 mm and 2 mm.

6. The hand-held machine tool as recited in claim 1 wherein the contacts are situated in the contact holder with play along the first direction.

7. The hand-held machine tool as recited in claim 1 wherein the contact holder includes a terminal strip, and one end of a strand is attached in the terminal strip and another end of the strand is attached to one of the contacts.

8. The hand-held machine tool as recited in claim 1 wherein at least one of the contacts is electrically contacted via a braided strand.

9. The hand-held machine tool as recited in claim 1 wherein the contact holder is exposed in the first direction.

10. The hand-held machine tool as recited in claim 9 wherein the contact holder is connected to the hand-held machine tool only in a force-fit manner in the first direction via the spring when the battery pack is locked in the guide.

11. The hand-held machine tool as recited in claim 1 wherein the spring contacts the contact holder on a side opposite the battery pack.

Assignees

• Hilti Ag

Inventors

• Burger Helmut
• Thanner Thomas
• Richter Rene

Classifications

• B25F5/00 Primary

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• B25F5/006

  Vibration damping means · CPC title

• H01R13/631 Primary

  for engagement only · CPC title