DE102009011766A1 - Electric switch, in particular power tool switch - Google Patents

Abstract

The invention relates to an electrical switch (1) for use in an electric hand tool, such as a cordless and / or power tool, for example drills, grinders, saws, planers, angle grinders or the like, with an electric motor. The switch (1) has a housing (2) in which a contact system (3) is located. On the housing (2) a movable between an output and an end position actuator (4) for switching action on the contact system (3) is arranged. The switch (1) may optionally be provided with a switch-lock and / or a lock for the actuator (4), wherein the switch-lock and / or the lock comprises an actuating element and a locking element (6) cooperating with the actuating element. The blocking element (6) is arranged on the housing (2) such that the blocking element (6) on movement of the actuating member (4) into the end position in a recess (7) in the actuating member (4) is immersed. Furthermore, the blocking element (6) is designed such that an optional cooperation with the actuating element for the switch-on lock and / or for the locking is made possible.

Description

The The invention relates to an electrical switch according to the preamble of claim 1

such Electrical switches find especially for an electric hand tool with an electric motor, as for a cordless and / or mains power tool, Use. These power tools may be drills, Grinders, saws, planers, angle grinders or the like act.

From the DE 24 10 871 A1 For example, an electrical switch with a housing for a power tool is known. The housing contains a contact system. An actuator disposed on the housing is movable between an output and an end position. The actuator acts in the end position switching on the contact system. The switch can be provided with a switch-lock for the actuator in the starting position and / or with a locking device for the actuator in the end position. The Einschaltsperre and / or the lock comprises an actuating element and a cooperating with the actuating element blocking element, which may be arranged on the housing.

ever according to purpose in the power tool so the switch with be provided with the following functions, namely switch with a Lock, switch with a switch-on lock or switch "normal", d. H. one equipped with neither lock nor with lock Switch. Since the blocking element designed differently for these functions is, are in conventional switches different housing needed. Alternatively, for the production of the housing with blocking element by injection molding previously different tools or tool change inserts be used.

Of the Invention is based on the object to further develop the switch so that the housing at the same time for the Switch normal and / or switch with lock and / or switch can be used with switch-on.

These Task is in a generic electrical Switch solved by the characterizing features of claim 1.

At the switch according to the invention is the blocking element arranged on the housing such that the blocking element upon movement of the actuator in the end position in a recess in the actuator dips, and indeed without obstruction of the actuator. Furthermore is the blocking element designed such that an optional Cooperation with the actuator for allows the lock and / or lock is. The housing is thus optional for receiving the switch-on or the lock or trained without switch-lock / lock. advantageously, is it possible by this particular structural design, to integrate all three mentioned functions into the housing, without them hindering each other. This will cost Saved because the tool without additional tool change inserts gets along. Further embodiments of the invention are the subject the dependent claims.

The Housing expediently includes a Base, in which the contact system is included, as well as a lid. The actuator is movable, for example, pivotable, arranged on the lid. Furthermore, the ease of use half by the user, the actuator on the actuator be located. In particular, the actuating element movably mounted on the actuator.

The Locking element can in a simple embodiment a stop for the switch-lock. The actuator the lockout has a movable counter-stop, which in the starting position the counter-stop in contact with the stop for blocking the actuator is present. By means of the Actuator is with appropriate operation by the user of the counter stop out of contact with the stop movable, which leads to the release of the actuator. Only then can the actuator of the output in the end position will be moved to power the power tool to put. Furthermore, the blocking element can be a backdrop for the Have locking. The actuating element of the lock has a movable hook, whereby with appropriate operation by the user in the end position of the hook in latching engagement can be brought with the backdrop. This then leads to the lock of the actuator in the end position.

In a simple embodiment, the blocking element is approximately U-shaped educated. The stop for the lockout can on a leg of the U in the direction of movement of the actuator be arranged projecting. The backdrop may be at the base of the U's arranged with a recess for the rear handle of the hook be. Finally, it is advisable to use a compression spring for the provision of the actuator from the End position in the starting position between the two legs and to arrange the base of the U, so that the compression spring guided accordingly upon movement of the actuator is.

In an inexpensive embodiment is the blocking element integrally formed together with stop and backdrop. In conventionally, the blocking element and / or the lid and / or the base of a thermoplastic material, which be made by injection molding. Conveniently, then become the blocking element and the lid during their production made in one piece.

The Switch-on lock can also be used as a transport lock act for the actuator. This is one unintentional switching on during the transport of the Power tool prevents what the security for the User boosts.

In summary can be for a particularly preferred Design notice that a kind of multi-functional lid for a device switch with integrated switch-on lock, transport lock or Locking in the actuator, for example, in the type of a pusher is designed, is created.

is the switch is equipped without these special features, so is the stop for the switch-on or for the transport safety without function and also the scenery for the lock is without function.

is the switch is equipped with a detent, so dives the narrow locking lever when pressing the trigger into the scenery. When the locking lever is actuated, The hook pivots into the backdrop, which locks the switch is. Repeated pressing of the trigger triggers the locking by the return spring. Will the lock first and then the pusher is pressed, so slides the locking hook on the backdrop unhindered down, which the function lock is possible.

is the switch equipped with a switch-on, so bumps the wide lever of the switch-on lock or the transport lock when the trigger is pressed against its stop. Thus, the switch is secured against accidental switching. Will the switch-lock or transport lock and only afterwards the pusher is actuated, so pivots the barrier rib in the open area of the scenery and clear the way.

The particular advantages of the invention are That cost savings are realized by no manufacturing of inserts for the lid necessary are. It also eliminates a permanent Rebuilding the tool. Furthermore, the storage is simplified, because only one lid instead of three different covers needed becomes. In addition, no conversion of the assembly and / or Test devices depending on the produced variant of the switch necessary, which allows a more flexible manufacturing changeover. Finally eliminated also confusion with the variants, what the quality increases.

One Embodiment of the invention with various developments and embodiments is shown in the drawings and will described in more detail below. Show it

1 an electric switch in overall view,

2 the electric switch without special functions in cutaway view,

3 the electric switch with Einschaltsperre in cutaway view and with a detailed view and

4 the electrical switch with lock in cutaway view and with a detailed view.

In 1 is an electrical switch 1 shown, which is suitable for use for an electric hand tool with an electric motor, such as for a cordless and / or power tool. The electric tools can be, for example, drills, grinders, saws, planers, angle grinders or the like. In particular, the switch 1 suitable for use in the handle of a two-hand angle grinder. The desk 1 has a housing 2 for receiving a contact system indicated only schematically 3 , At the housing 2 is a movable between an initial and an end position actuator 4 arranged in the manner of a pusher, the switching action on the contact system 3 serves. In the present case is the contact system 3 switched off when the actuator 4 is in the starting position. Is the actuator located 4 however, in the end position, so is the contact system 3 switched on.

The desk 1 can with a switch-lock and / or with a lock for the actuator 4 be provided. In this case, the switch-lock and / or the lock comprises an actuating element 5 and one with the actuator 5 cooperative, in 2 visible blocking element 6 , Is the switch 1 not equipped with these special functions, so eliminates the actuator 5 , The locking element 6 is still present, but has no function in this case.

As in further 2 can be seen, is the blocking element 6 on the housing 2 arranged such that the blocking element 6 on movement of the actuator supply organs 4 in the end position in a recess 7 in the actuator 4 dips. A hindrance to the movement of the actuator 4 is thus excluded if it is a switch 1 without switch-on lock or lock, ie a normal switch 1 is. Next is the blocking element 6 designed such that an optional interaction with the actuating element 5 for the lockout according to 3 and / or for locking according to 4 is possible. The desk 1 is thus optionally designed for receiving the switch-lock or the lock or without switch-lock / lock.

As further on from 2 can be seen, includes the housing 2 a pedestal 8th as well as a lid 9 , The actuator 4 is movable, and pivotally mounted on a bearing 10 , on the lid 9 arranged. The actuator 5 is on the actuator 4 located, according to 3 or 4 on the actuator 4 by means of a rotary bearing 11 movably mounted.

The blocking element 6 has a stop 12 for the lock on, as in 3 you can see. The actuator 5 for the lockout has a wide, movable counter-attack 13 in the manner of a barrier rib, such that in the initial position of the actuating member 4 the counter stop 13 in contact with the stop 12 is. Consequently, the movement of the actuator 4 locked in the manner of a lockout. By means of the actuating element 5 is with appropriate operation by the user in the starting position of the counter-stop 13 out of contact with the stop 12 movable, bringing a release of the movement of the actuator 4 he follows. The actuator 4 can then turn on the contact system 3 moved to the end position, as shown by the detail view in 3 you can see. The switch-lock can also be used as a transport lock for the actuator 4 Use, so that an unintentional switching on of the switch 1 is avoided during transport of the power tool.

The blocking element 6 still has a backdrop 14 for locking on, as in 4 you can see. The actuator 5 for the locking has a movable hook 15. By means of appropriate operation of the actuating element 5 by the user is in the end position of the actuator 4 the hook 15 in latching engagement with the backdrop 14 Can be brought, as with the detail view of 4 can be seen. As a result, then a locking of the actuator 4 made in the final position.

As in 3 or 4 can be seen, is the blocking element 6 designed in a roughly U-shaped. The stop 12 is on a thigh 16 of the U in the direction of movement of the actuator 4 arranged distantly. The scenery 14 is at the base 17 of the U with a recess 18 for the rear grip of the hook 15 arranged. A compression spring 19 for the return of the actuator 4 from the end position to the starting position is located between the two legs 16 as well as the base 17 of the U, bringing the compression spring 19 is performed accordingly.

The blocking element 6 is complete with stop 12 and scenery 14 designed in one piece. The blocking element 6 and / or the lid 9 and / or the pedestal 8th consist of a thermoplastic material and are manufactured by injection molding in a corresponding tool. Conveniently, then the blocking element 6 as well as the lid 9 manufactured in one piece in their manufacture in a tool, whereby the lid 9 as a kind of multi-functional lid for a switch with or without switch lock and / or with locking.

The Invention is not limited to the described and illustrated embodiments limited. Rather, it also includes all experts Further developments within the scope of the claims defined invention. Thus, the invention is not limited to power tool switches can be used in power tools but can also be used on others Switches, such as those for household electrical appliances, Electric gardening equipment, machine tools o. The like., Use Find.

1

(Electrical) switch

2

casing

3

Contact system

4

actuator

5

actuator

6

blocking element

7

recess (in the actuator)

8th

base

9

cover

10

camp (for actuator)

11

pivot bearing (for actuator)

12

attack (for switch-on lock)

13

counterstop

14

scenery (for locking)

15

hook

16

leg (from blocking element)

17

Base (from blocking element)

18

recess (on blocking element)

19

compression spring

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 2410871 A1 [0003]

Claims (6)

Electric switch, in particular for a power tool with an electric motor, such as a cordless and / or mains power tool, for example drills, grinders, saws, planers, angle grinders or the like, having a housing ( 2 ), with one in the housing ( 2 ) contact system ( 3 ), with a movable between an output and an end position actuator ( 4 ) for switching action on the contact system ( 3 ), and optionally with a switch-lock and / or a lock for the actuator ( 4 ), wherein the engagement lock and / or the locking an actuating element ( 5 ) as well as with the actuating element ( 5 ) cooperating blocking element ( 6 ), characterized in that the blocking element ( 6 ) on the housing ( 2 ) is arranged such that the blocking element ( 6 ) upon movement of the actuator ( 4 ) in the end position in a recess ( 7 ) in the actuator ( 4 ), and that the blocking element ( 6 ) is configured such that an optional interaction with the actuating element ( 5 ) is enabled for the lock and / or for locking. Electric switch according to claim 1, characterized in that the housing ( 2 ) a socket ( 8th ) and a lid ( 9 ), that preferably the actuating member ( 4 ), in particular pivotable, on the lid ( 9 ) is arranged, and further preferably that the actuating element ( 5 ) on the actuator ( 4 ) is located, in particular on the actuator ( 4 ) is movably mounted. Electric switch according to Claim 1 or 2, characterized in that the blocking element ( 6 ) a stop ( 12 ) for the switch-on, wherein in particular the actuating element ( 5 ) the switch-on lock a movable counter-stop ( 13 ), so that in the initial position of the counter stop ( 13 ) in abutment with the stop ( 12 ) and by means of the actuating element ( 5 ) out of contact with the stop ( 12 ) is movable, and that preferably the blocking element ( 6 ) a backdrop ( 14 ) for locking, wherein in particular the actuating element ( 5 ) the locking a movable hook ( 15 ), so that in the end position of the hook ( 15 ) in latching engagement with the scenery ( 14 ) can be brought. Electric switch according to claim 1, 2 or 3, characterized in that the blocking element ( 6 ) is configured in approximately U-shaped that the stop ( 12 ) on a leg ( 16 ) of the U in the direction of movement of the actuator ( 4 ) is arranged projecting that further preferably the scenery ( 14 ) at the base ( 17 ) of the U with a recess ( 18 ) for the rear grip of the hook ( 15 ) is arranged, and that still further preferably a compression spring ( 19 ) for the return of the actuator ( 4 ) from the end position to the starting position between the two legs ( 16 ) as well as the basis ( 17 ) of the U is located. Electrical switch according to one of Claims 1 to 4, characterized in that the blocking element ( 6 ) together with stop ( 12 ) and scenery ( 14 ) is integrally formed, that preferably the blocking element ( 6 ) and / or the lid ( 9 ) and / or the base ( 8th ) consist of a thermoplastic plastic, and further preferably that the blocking element ( 6 ) as well as the lid ( 9 ) are produced in one piece during their production by injection molding. Electric switch according to one of Claims 1 to 5, characterized in that the switch-on lock additionally acts as a transport lock for the actuating member ( 4 ) acts.