Lockable electric switch

Patent metadata

Field	Value
Publication number	US-9508497-B2
Application number	US-201113995619-A
Country	US
Kind code	B2
Filing date	Nov 16, 2011
Priority date	Dec 22, 2010
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

An electric switch, in particular for an electric power tool, in particular a hammer drill, comprises a first switching device and a second switching device, wherein the first switching device can be adjusted by adjusting a first mechanical signaling means from a first switched state to a second switched state, wherein the second switching device can be adjusted by adjusting a second electrical or mechanical signaling means from a third switched state in which the electric switch acts as a pushbutton into a fourth switched state in which the switch acts as a rocker switch. The disclosure further relates to an electrical power tool having an electric switch according to the disclosure.

First claim

The invention claimed is:

1. An electric switch for an electric power tool, comprising:
a first switching device configured to be reversibly adjusted by adjusting a first mechanical signal mechanism from a first switching mode into a second switching mode; and
a second switching device configured to be reversibly adjusted by adjusting a second signal mechanism from a third switching mode, in which the electric switch functions as a push button, into a fourth switching mode, in which the electric switch functions as a rocker switch, the second switching device including a second adjusting mechanism that cooperates with the second signal mechanism,
wherein the second signal mechanism is one of an electrical signal device and a mechanical signal device,
wherein the first switching mode is a switched-on mode in which the electric switch closes a current circuit,
wherein the second switching mode is a switched-off mode in which the current circuit is open,
wherein the third switching mode is an initial mode in which the first signal mechanism cannot be locked, and
wherein the fourth switching mode is a locked mode of the electric switch in which the first signal mechanism is (i) configured to be locked by the second adjusting mechanism if the first signal mechanism is in the switched-off mode and (ii) locked by the second adjusting mechanism if the first signal mechanism is in the switched-on mode.

2. The electric switch as claimed in claim 1 , wherein the first switching device includes an electrical contact and electrical connections configured for closing the current circuit.

3. The electric switch as claimed in claim 2 , wherein:
the first switching device includes a first adjusting mechanism, which cooperates with the first signal mechanism, and
the electrical contact is adjusted by the first adjusting mechanism.

4. The electric switch as claimed in claim 3 , wherein, in the third switching mode, the first adjusting mechanism cannot be locked.

5. The electric switch as claimed in claim 4 , wherein, in the fourth switching mode, the first adjusting mechanism is (i) configured to be locked by the second adjusting mechanism if the first adjusting device is in the switched-off mode and (ii) locked by the second adjusting mechanism if the first adjusting device is in the switched-on mode.

6. The electric switch as claimed in claim 5 , wherein:
the first switching device is configured to be adjusted against a first force of a first force means from the switched-off mode into the switched-on mode, and
the second switching device is configured to be adjusted against a second force of a second force means from the initial mode into the locked mode.

7. The electric switch as claimed in claim 1 , further comprising:
a first actuating mechanism configured for actuating the first signal mechanism; and
a second actuating mechanism configured for actuating the second signal mechanism.

8. The electric switch as claimed in claim 1 , further comprising:
a second actuating mechanism configured for actuating the second signal mechanism,
wherein at least one of the second adjusting mechanism and the second actuating mechanism is embodied in a mechanical or electrical manner.

9. The electric switch as claimed in claim 1 , wherein said electric switch comprises a housing.

10. The electric switch as claimed in claim 1 , wherein the current circuit is a motor current circuit configured to drive the electric power tool.

11. An electric power tool, comprising:
an electric switch having a first switching device and a second switching device,
wherein the first switching device is reversibly adjusted by adjusting a first mechanical signal mechanism from a first switching mode into a second switching mode,
wherein the second switching device is reversibly adjusted by adjusting a second signal mechanism from a third switching mode in which the electric switch functions as a push button into a fourth switching mode in which the electric switch functions as a rocker switch, the second switching device including a second adjusting mechanism that cooperates with the second signal mechanism,
wherein the second signal mechanism is one of an electrical signal device and a mechanical signal device,
wherein the first switching mode is a switched-on mode in which the electric switch closes a current circuit,
wherein the second switching mode is a switched-off mode in which the current circuit is open,
wherein the third switching mode is an initial mode in which the first signal mechanism cannot be locked, and
wherein the fourth switching mode is a locked mode of the electric switch in which the first signal mechanism is (i) configured to be locked by the second adjusting mechanism if the first signal mechanism is in the switched-off mode and (ii) locked by the second adjusting mechanism if the first signal mechanism is in the switched-on mode.

12. The electric power tool as claimed in claim 11 , further comprising:
a hand grip housing;
an operating mode switch; and
a tool housing,
wherein the electric switch further includes (i) a first actuating mechanism configured for actuating the first signal mechanism and (ii) a second actuating mechanism configured for actuating the second signal mechanism,
wherein the electric switch and the first actuating mechanism are supported in the hand grip housing, and
wherein the operating mode switch is configured for adjusting the second actuating mechanism that is arranged in the tool housing.

13. The electric switch of claim 12 , wherein the hand grip housing is an anti-vibration hand grip housing.

14. The electric switch of claim 11 , wherein the electric power tool is a chisel hammer.

15. An electric switch for an electric power tool, comprising:
a first switching device configured to be reversibly adjusted by adjusting a first mechanical signal mechanism from a first position into a second position; and
a second switching device configured to be reversibly adjusted by adjusting a second signal mechanism from a third position into a fourth position, the second switching device including a second adjusting mechanism that cooperates with the second signal mechanism to selectively block the first signal mechanism,
wherein the electric switch (i) closes a current circuit when the first signal mechanism is in the first position and (ii) opens the current circuit when the first signal mechanism is in the second position,
wherein the second adjusting mechanism is reversibly adjusted via the second signal mechanism from a fifth position into a sixth position,
wherein, when the second adjusting mechanism is in the fifth position and the first signal mechanism is in the first position, the second adjusting mechanism does not block the first signal mechanism from returning to the second position such that the electric switch functions as a push button, and
wherein, when the second adjusting mechanism is in the sixth position and the first signal mechanism is in the first position, the second adjusting mechanism blocks the first signal mechanism from returning to the second position such that the electric switch functions as a rocker switch.

Assignees

• Kuhnle Axel
• Schwenkel Peter
• Bosch Gmbh Robert

Inventors

• Kuhnle Axel
• Schwenkel Peter

Classifications

• B25D17/04

  Handles; Handle mountings · CPC title

• H01H11/0018

  for allowing different operating parts · CPC title

• H01H9/06 Primary

  Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner · CPC title

• H01H11/00

  Apparatus or processes specially adapted for the manufacture of electric switches (processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H13/88) · CPC title