DE202008003462U1 - Additional handle for electric hand tools - Google Patents

Abstract

Additional handle (10) for an electric hand tool (50), with a handle part (20) and a fastening means (30) for fixing the auxiliary handle (10) on the hand tool (50), characterized in that the Fastening means (30) a tension band (32) and a profiling, in particular for interaction with a corresponding profiling on the tools of the trade (50).

Description

The The present invention relates to an auxiliary handle for an electric Hand tool with the features of the preamble of claim 1.

at Many hand tools, it is advantageous if the user after own discretion an additional Handle can attach, for example, to lead the tool quieter can. Handles for additional Attachment to impact drills, hammer drills o. Ä. Are widely known.

For example, describes DE 10029536 A1 an additional handle which is fixable via a fastening part on the housing of a hand tool. According to the preferred embodiment, the fastening part 16 a grub screw 18 on, which can be screwed into a corresponding opening with internal thread in the hand tool. The handle can thus be mounted in one or more predetermined positions on the tool.

DE 28 04 223 C2 describes an auxiliary handle, which is preferably held by a threaded stem of a shaft and fixed to the machine tool.

DE 19848126 A1 describes a vibration damped handle. This is fastened by means of a fastening means to the power tool, which is preferably a threaded pin.

DE 1954632 B4 discloses a hand tool with a rotatable handle. The handle has a movably held, coupled with an actuator locking lug. Furthermore, the motor housing of the tool has at least two recesses which receive the locking lug of the handle in a form-fitting manner. In this handle so at least two different positions on the hand tool are possible.

at the attachment of an additional handle by means of a threaded pin or similar There is a disadvantage in that the hand tool a corresponding Recording for must have the threaded pin. Accordingly, the handle is too only in one or a few given positions or angular positions attached to the hand tool.

The The aim of the invention is to choose an additional handle Attachment to a hand tool to create its position in the Angle is flexibly adjustable.

This The aim of the invention is the subject of the independent claim reached. Features of advantageous developments of the invention result from the dependent ones Claims.

One inventive additional handle has a handle on. The grip part is preferably ergonomic designed so that it fits well in the user's hand. The handle part consists according to a preferred embodiment from a hard rubber and / or plastic material or has a at least partially rubberized surface on, so that it is slip-proof in the hand.

Farther For example, the handle portion may have a label is printed or made of a different material and itself color and / or lift as a survey or depression from the handle can.

Farther The additional handle includes a fastener that attaches the auxiliary handle on the power tool is used. This fastener includes a strap and a profiling. The profiling can be arranged for example in a receiving trough and surveys and recesses in the manner of an internal toothing - similar to one Gear - exhibit. strap and receiving trough thus provide a kind of receiving eyelet. alternative The profiling on one side beveled teeth corresponding to a saw blade exhibit. Likewise, the use of a wavy profiling or similar possible.

Preferably if the auxiliary handle is used together with hand tools, the on the case, for example, on the chuck, a corresponding corresponding Have profiling. The use of the auxiliary handle together with other hand tools that have a corresponding profiling not have, but is also possible and from the present Invention.

According to a preferred embodiment, the profiling has at least one elevation and / or at least one depression. A hand tool having a corresponding recess or increase in can form a stable, positive positive connection with the auxiliary handle. The above-described bene attachment or receiving lug of the auxiliary handle is pushed over the corresponding profiled housing part of the hand tool, the profiling on the handle and the profiling on the tool positively engage with each other. Subsequently, the clamping band is tensioned, so that in addition a frictional connection can take place. The tensioning of the strap is done for example by turning a corresponding rotary knob. Further the subject Man known Spannmöglichkeiten should also be included by the invention.

According to one another embodiment the profiling is arranged in the inner diameter of the clamping band. In this embodiment becomes a positive Connection between the profiling of the tension band and the profiling made on the tool.

is the profile associated with the tool, for example, all sides on the drill head, is an almost arbitrary arrangement of Zusatzhangriffs possible, d. H. the handle can be in (almost) any angle setting to be ordered. The graduation is only of the fineness depending on the profiling.

Of the inventive additional handle may preferably be located on a front housing section, away from designed as a handle portion rear housing portion be attached to the hand tool. In a conventional percussion drill is the front housing section an area near the drill chuck, the one from the back, usually pistol-like and arranged as a handle portion formed rear housing portion away is.

Further Features, objects and advantages of the present invention will be apparent The following detailed description of a preferred embodiment the invention, which serves as a non-limiting example and to the attached drawings Refers. The same components basically have the same Reference numerals and are partially not explained several times.

1 shows an additional handle for hand tools and

2 testifies to an additional handle attached to a drill.

A possible embodiment of an additional handle according to the invention 10 is determined by 1 illustrated. The auxiliary handle 10 consists of a preference as ergonomically located in the hand grip part 20 , This handle part 20 For example, it may be encased in rubber or other non-slip material to keep it from slipping into the user's hand. Furthermore, the handle part 20 optically offset labels 22 which, for example, provide proof of manufacturer.

This label 22 may according to a preferred embodiment have a different color than the remainder of the handle. Alternatively, the caption 22 made of a different material than the surface of the handle 20 exist and optionally have a different color. Preferably, the label can be raised or recessed in comparison to the rest of the handle part 22 be educated. Especially if the label 22 is formed sublime, the risk of slippage of the handle 10 additionally reduced in the hand.

The auxiliary handle 10 also has a fastener 30 on, about the attachment of the handle 10 on the hand tool 50 he follows. The fastener 30 has tension band 32 for example, in the form of an adjustable loop, which consists of a smooth, non-stretchable, flexible plastic according to the embodiment. Other materials known to those skilled in the art which do not have the properties of being stretchable and flexible can also be used. The adjustment of the tensioning loop 34 for example, by turning a rotating fog 34 causes.

Furthermore, the fastening means 30 a hollow 36 with elevations 38 and depressions 40 , For example, in the form of an internal gear corresponding to a gear.

In 2 is shown that the increases 38 and depressions 40 in the hollow 36 the auxiliary handle 10 positively in corresponding increases 52 and depressions 54 on a hand tool 50 intervention. The raises 52 and depressions 54 For example, are located as a kind of external toothing on a front housing portion of the tool 50 on the chuck, for example 51 ,

The widened loop 32 is about the chuck 51 striped and in the desired position by turning the rotary knob 34 tightened, leaving a tight positive connection between the auxiliary handle 10 and the hand tool 50 will be produced. In contrast to additional handles that have no teeth or the like, less clamping force is required. Furthermore, there is also due to the gearing and not the risk that the loop 32 could loosen during operation.

The The invention is not limited to the above embodiments. Much more is a variety of variants and modifications conceivable by the idea according to the invention Use and therefore also fall within the scope of protection.

10

Auxiliary handle / handgrip

20

handle part

22

labeling

30

fastener

32

Strap / sling

34

Gag / rotary knob / clamping screw

36

trough

38

increase

40

deepening

50

hand tool

51

chuck

52

Increase on hand tool

54

deepening on the hand tool

Claims (6)

Additional handle ( 10 ) for an electric hand tool ( 50 ), with a handle part ( 20 ) and a fastening means ( 30 ) for attaching the auxiliary handle ( 10 ) on the hand tool ( 50 ), characterized in that the fastening means ( 30 ) a strap ( 32 ) and a profiling, in particular for interaction with a corresponding profiling on the tools ( 50 ), having. Additional handle ( 10 ) according to claim 1, characterized in that the profiling in a receiving trough ( 36 ) is arranged. Additional handle ( 10 ) according to claim 1 or 2, characterized in that the profiling at least one increase ( 38 ) and / or at least one depression ( 40 ), whereby the increase ( 38 ) with a corresponding depression ( 54 ) on the hand tool ( 50 ) or the depression ( 40 ) with a corresponding increase ( 52 ) on the hand tool ( 50 ) cooperates. Additional handle ( 10 ) according to one of claims 1 to 3, characterized in that the clamping band ( 32 ) a rotary knob ( 34 ) is assigned for detection. Additional handle ( 10 ) according to one of claims 1 to 4, characterized in that the auxiliary handle ( 10 ) at arbitrary angles on the hand tool ( 50 ) is attachable. Additional handle ( 10 ) according to one of claims 1 to 5, characterized in that the auxiliary handle ( 10 ) on a front housing section, away from a handle section designed as a rear housing section on the hand tool ( 50 ) is attachable.