DE202009001797U1 - Tool holder for electric hand tool devices - Google Patents

Abstract

A tool holder (10) for power hand tool devices (70) comprising an axially annular slit (18) having an open ring member (12) which is resiliently deformable for attachment to a machine neck (82) of a handheld power tool (70) having two to the slot (18) adjacent end portions (20, 22), the force or form-fitting to each other are fixed for rotationally fixed and axial fixing of the tool holder (10) on a machine neck (82), wherein in a region between the end regions (20, 22) on a outer lateral surface (14) clamping holders (40) are provided for tools, and wherein a support bracket (50) is provided for suspending the tool holder (10), wherein the support bracket (50) in particular a substantially cross-sectionally U-shaped Einhängabschnitt (55) and a fixed to the ring member (12) connected to the mounting region and a fastening region opposite the free end (52).

Description

The The invention relates to a tool holder for electric hand tool devices as well as an electric hand tool device. In the prior art are already holders for tools for power hand tools, in particular so-called Schraubvorsätze or bits, for Drill screw known, this example in this provided containers can be stored (so-called bit-boxes).

In addition, the describes DE 201 05 676 a portable machine tool with an integrated bit drawer. Furthermore, machine tools are described as known in the document, in which a holder for receiving a tool or a replacement tool is provided at the foot of the machine. In these holders, the respective tool, for example a screw attachment (bit), is clamped in a clamping device arranged on the outside of the housing. Such a known device has the disadvantage that due to the inclusion of the tool in the region of the machine base part of the machine base part fails relatively bulky and especially in battery machines in which the foot part carries the accumulator, a redesign of the recording for the accumulator is necessary and beyond in already in existing electrical hand tool devices corresponding tool holders can no longer be provided.

About that In addition, it is desirable that an electric hand tool can be hung on a so-called work belt, which a craftsman wears so that he has free hands for other activities, such as B. climbing on scaffolding, has.

It is therefore an object of the invention, a tool holder and a To provide electric hand tool device, wherein the tool holder can also be added later and in particular even when using different devices, the tools, without having to insert them into a new holder, can be attached to another device and moreover, hanging on a work belt a craftsman is possible.

The Invention solves this problem by a tool holder with the features of claim 1 and an electric hand tool device with the features of claim 11.

Of the Tool holder for electric hand tool devices comprises while a particular elastically deformable ring element, wherein the ring element is slotted in the axial direction and thus as open ring element is designed for attachment to a machine neck an electric hand tool with two to the slot adjacent end areas. The end regions can be or form-fitting to each other be defined, wherein when setting the end portions of each other reduces the circumference of the ring element can be so that the ring element against a machine neck can be applied and is fixable to this. This should be understood to mean that the tool holder substantially non-rotatable and axially immovable can be arranged on the machine neck. This is true at least under the forces acting in normal operation and Vibrations. D. h., A rotationally fixed and axial fixing relates to the normal operating condition without damage the tool holder. The reduction of the circumference can thereby gradual or continuous. The one through the slot formed distance between the two end portions is thus variably adjustable.

Preferably have the end portions while a screw on, over these are interconnected and adjusted to each other can. For this purpose, it may be provided that one of the end regions has a through hole through which a screw is inserted can, and wherein the thread-carrying screw portion in a Threaded hole of the other end can be screwed. The screw head lies against the end region with the through hole. Becomes Now the screw is turned, so by the internal thread in the Threaded hole achieves that the two end areas on each other be moved to or away from each other. It can be provided that in a state where the two end areas are complete abut each other, the ring element as a closed ring element is trained. By adjusting the distance of the end areas To each other, the ring element is tensioned on the machine neck.

Of Furthermore, it can be provided that radially in the region of the end regions outwardly facing portions are provided, in which the passage or the threaded hole is provided.

alternative is also a positive connection, for example via Catches in which a detent engages, the two end regions conceivable, wherein a clamping and fixing of the ring element takes place in that the catch is moved over the notches as long as until the ring element is tight against the machine neck.

In a region between the end regions on the outer circumferential surface clamping brackets for the tools are provided. In this case, the clamping brackets can be designed in particular as cylinder sections, which in the axial direction of the Cylinder sections are formed open. In particular, the cylinder sections in this case comprise slightly more than 180 ° of the circumference of the cylinder sections, so that tools can be introduced into the clamping brackets only under elastic deformation. Furthermore, the cylinder sections are designed so that in the inserted state of a tool, in particular a Schraubvorsatzes (bits), the clamping brackets biased against the tool, so as to prevent slipping or falling out of the tools from the clamp brackets in normal operation. The opening of the clamping brackets is directed in particular radially outward.

On the manner described above can be a tool holder, in particular as a holder for screw attachments may be formed on a machine neck of an electric hand tool, in particular a screwdriver or drill screwdriver, especially a cordless tool, establish. There are no changes to the electric hand tool necessary. The appropriate tool holder can about it also independent of the electric hand tool can serve as a receptacle for tools and can, without a plugging to make the tools necessary on various electrical hand tool devices be determined.

The open side of the clamp holders has radially outward. In particular, the tool holder off a plastic, in particular a plastic injection molded part, be formed wherein the clamping brackets in this case in one piece may be formed integrally with the ring element.

By the design of the tool holder as a plastic part is achieved that the tool holder at least slightly can be elastically deformed to a good fixing and adjustment to allow for a machine neck. Being on the other Side sufficient stability of the tool holder given in order to ensure this in normal operation, d. H. nonrotatably and axially captive on the machine neck to fix.

By Moving towards each other or closing the ring element reduced the circumference of the ring element is continuous until the two End regions abut each other or no longer moved can be by a concern against the machine neck. In this way, a tensioning of the ring element can take place until it rests against the machine neck.

Around to ensure the best possible support of the two end regions and to affect the clamping brackets as little as possible, can be provided that the clamping brackets the end portions are arranged opposite one another on the ring element. Besides can be provided that opposite the mounting bracket Clamping brackets are provided. In particular, it may be provided that in the fixed state on a machine neck, the end portions down, so pointing in the direction of the handle, arranged are, and the mounting bracket offset by 90 ° thereto in a page area. The clamping brackets can then on opposite side area as well as at the top, so arranged from the handle pioneering area of the machine neck be.

The Number of clamping brackets is on the one hand by the available standing room on the outer surface and the other by the desired number of clamp brackets limited. Preferably, however, at least six clamping brackets provided, wherein the clamp brackets are combined in pairs can. Through the pairwise summary of the clamp brackets On the one hand, the elastic deformability of the ring element relatively little affected and on the other Side the stability and thus the clamping force of the clamp brackets positively influenced.

The Attachment of the support bracket, in particular of metal, in particular a flat material web or sheet metal blank, in particular via a positive connection made, including an end of the support bracket inserted into a receptacle of the ring member and there is an opening in the mounting bracket by a Latching the ring element is penetrated, the determination takes place under elastic deformation of the ring element. Especially can be provided that the mounting bracket two-fold U-shaped is designed, wherein the one leg of the first mounting side Us the carrying handle completely into the receptacle is inserted and the other leg against the recording is applied. The second adjoining U-shaped Bending the bracket then serves to enable the For example, hang it in a strap between the Thighs, but also in loops of pants or other Belt of a craftsman and thus forms the Einhängeabschnitt. The thereto extending second leg, at which the free end the support bracket is arranged, can thereby comparatively be long trained and especially longer than the Radius of the ring member, so as to ensure a secure support with the machine in a belt. The mounting bracket is located preferably for a right-handed person on the left side of the machine, for a left-hander on the right and can be mounted in both directions.

The mounting bracket can be removable. For this purpose, the ring element a spring tongue with egg Have ner locking lug which engages releasably in an opening of the support bracket.

Of Further can be provided for secure mounting on the machine neck be that on the inner circumferential surface of the ring element at least partially inwardly directed spring elements or Ribs are provided, wherein the spring elements as spring tongues can be trained. There is at least one rib and / or spring tongue provided. The spring tongues are then applying deformed elastically on a machine neck and thus produce an additional Down force. Furthermore, the spring tongues are used to compensate Tolerances.

Intended Ribs on the inner shell surface can in Run circumferentially and at least one Extend part of the scope.

To the easier clamping of the ring member, the screw on her screw head in particular have a knurl to a particular to allow easy handling of the screw, in particular a secure grip and a good tightening and loosening the same. Alternatively, a star grip screw can be used.

Of Furthermore, the invention relates to an electric hand tool device with a machine neck, at one end of a tool holder is provided, which protrudes from a housing, wherein the Machine neck a tool holder of the above Art can be attached. In such an electric hand tool device can it is in particular a screwdriver or drill, a housing for receiving an electric motor as well a handle, wherein the shaft for driving the electric hand tool device emerges from the case and in this area of one Machine neck is enclosed, for attaching a tool holder of the type described above can serve. It can be provided be that the tool holder is removable, for example the attachment of an additional handle, also in the area the machine neck can be set to allow. In the fixed state, the tool holder can be so firmly against abut the machine neck that twisting or axial pulling off in normal operation without destroying the tool holder is avoided.

After all can be provided that the machine neck in the circumferential direction extending groove, in particular the spring tongues or Ridges of the tool holder are added and their extent in the axial direction larger than the axial extent the spring tongues or ribs is, at least slightly greater. In this way, it can be ensured that the tool holder is not only secured against twisting, but in particular an axial release can be avoided can. Alternatively, it may be provided that the complete Ring element engages in the groove.

To the Attaching the tool holder to a machine neck will now the tool holder with spaced end portions a machine neck pushed in the axial direction. The placement takes place in such a way that the spring tongues or ribs, if present, engage in a circumferential groove of the machine neck. By turning the screw to tighten the ring element then the two end regions approached each other and thus the ring element over its entire circumference against the machine neck created. By further turning the knurled screw and so that further approximation of the two end regions takes place then tightening the tool holder against the machine neck until this rests so firmly that the tool holder is no longer open the machine neck twisted or pulled axially from this can. In this state, then the electric hand tool with the mounting bracket, for example, on a working belt of a Craftsman be hung, so that both hands free, for example, to climb onto a scaffold or other activities without the hand-held power tool completely remove.

The Invention will be described in more detail below with reference to a drawing be explained.

there demonstrate:

1 a perspective view of the tool holder;

2 a section through the tool holder and

3 an electric hand tool with an attached tool holder.

1 shows a perspective view of a tool holder, denoted by the reference numeral 10 is provided. The tool holder in this case comprises a ring element 12 made of a resilient plastic material that has an outer surface 14 and an inner circumferential surface 16 has. In the ring element 12 it is a slotted ring element, wherein the slot extends in the axial direction, so that the ring element is open. The slot is denoted by the reference numeral 18 Mistake. Both sides of the slot are end areas 20 and 22 arranged the ring element, wherein each of the end portions 20 and 22 one radially outward pointing section 24 and 26 having. In the illustrated state, the end regions 20 and 22 separated by the slot and thus spaced from each other.

The sections 24 and 26 be through a thumbscrew 27 , whose screw head 28 with a knurling 30 is provided for better manageability, penetrated, the section 26 a through hole and the section 24 has an internal thread into which the screw 27 is screwed. The screw head lies with a cylindrical section 32 against the section 26 at. Now, when the screw is rotated, the end areas 20 and 22 with their sections 24 and 26 moving towards or away from each other. Due to the screw connection, a sufficiently strong clamping force can be achieved when the end regions move toward each other 20 and 22 be applied, leaving a corresponding tool holder 10 can be securely fixed to a machine neck of an electric hand tool, without that during normal operation it to a twisting or axial slipping of the tool holder 10 comes from a machine neck.

On the outer circumferential surface of the ring element 12 are clamping brackets 40 provided, each with two clamp brackets 40 are summarized. The clamping brackets are used to hold tools, in particular Schraubvorsätzen (bits). In particular in 2 can be seen the clamping brackets, which are each formed as a part-cylindrical sections, each provided more than 180 ° of the cylindrical portion and the cylindrical portions are slotted radially outward or open, so that inserted through this slot tools in the clamp and there can be stored in a clamped manner.

Furthermore, the clamp has a mounting bracket 50 on, with the mounting bracket a free end 52 has and a cross-sectionally double U-shaped design, wherein the leg 53 with the free end 52 forms a leg of a first U-shaped design. The second leg of this U-shaped design, with the reference numeral 54 is provided, lies against a receptacle of the ring member, denoted by the reference numeral 57 is attached to. In this case, the U-shaped connection between the legs forms 53 and 54 a suspension section 55 , Furthermore, the thigh 54 over a U-shaped arch with another leg 56 connected, with the thigh 56 an opening 58 has, by a catch 59 of the ring element 12 is penetrated, so that the mounting bracket 50 positive fit on the ring element 12 can be determined. In this case, the mounting bracket 50 from the ring element 12 be removed. This is the leg 56 inserted into the receptacle. Due to the double U-shaped design, the leg 54 against the recording 57 is applied, the greatest possible stability is ensured. The thigh 53 is much longer than the radius of the ring element 12 To be as secure as possible mount on a strap on which an electric hand tool on the mounting bracket 50 be secured, and to reduce the risk of loosening the strap.

On the inner surface 16 are also ribs 60 such as 62 provided, with the ribs 60 and 62 opposite each other in the area of the end areas 20 and 22 as well as exactly opposite in the area of the clamping brackets 40 are provided. With these ribs 60 . 62 When mounting on an electric hand tool, the tool holder 10 engage in a groove of the machine neck of the electric hand tool device, so that an axial withdrawal after the ring element 12 is tightened, is avoided. 3 now shows an electric hand tool device, in its entirety by the reference numeral 70 is provided, this is a cordless screwdriver with a machine base 72 in which a battery for powering a motor is provided and the battery with the reference numeral 74 is designated. Furthermore, the electric hand tool device has a handle 76 as well as a switch 78 on, by pressing the switch of the engine, in a housing 80 is arranged, is powered and a tool holder 79 rotating drives. By further tightening the screw 27 , in the 3 is designed as a star grip screw, then the tool holder 10 on the machine neck 82 securely braced and secured against twisting. Through the ribs 60 and 62 , which engage in the groove in this state, further becomes an axial withdrawal from the machine neck 82 avoided.

The tool holder comes in the mounted position 10 lying on the machine neck so that the end areas 20 and 22 pointing towards the machine base, leaving the clamp brackets 40 are aligned in the opposite direction and to one side of the machine tool. On the other side is then the mounting bracket 50 aligned, so that in an operating position in which the craftsman the machine on the handle 76 has seized the machine 70 in a work belt with the mounting bracket 50 can be hung. The mounting bracket 50 is preferably for a right-handed person on the left side of the machine, for a left-hander on the right. This is not just the tools in the clamp brackets 40 easily available, but the machine can also, if both hands are needed, in a work belt or a strap of a pair of pants be hanged and does not have to be dropped on the floor. Especially when climbing scaffolding, both hands are available. The particular advantage is that by loosening the screw, the tool holders at any time without the tools must be removed from the clamp brackets can be mounted from one machine to another machine.

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 20105676 [0002]

Claims (13)

Tool holder ( 10 ) for power hand tools ( 70 ) comprising a slit in the axial direction ( 18 ), having open ring element ( 12 ), which is elastically deformable, for attachment to a machine neck ( 82 ) of an electric hand tool device ( 70 ) with two to the slot ( 18 ) adjacent end regions ( 20 . 22 ) which can be fixed to one another in a force-locking or form-fitting manner for the rotationally fixed and axial fixing of the tool holder ( 10 ) on a machine neck ( 82 ), wherein in a region between the end regions ( 20 . 22 ) on an outer lateral surface ( 14 ) Clamp mounts ( 40 ) are provided for tools, and wherein a mounting bracket ( 50 ) is provided for attaching the tool holder ( 10 ), whereby the mounting bracket ( 50 ) in particular a substantially U-shaped in cross section Einhängabschnitt ( 55 ) and one fixed to the ring element ( 12 ) and a fastening area opposite the free end ( 52 ) having. Tool holder according to claim 1, wherein the end regions ( 20 . 22 ) are fixable to each other by means of a screw connection. Tool holder according to claim 2, wherein one of the end regions ( 20 ) a threaded hole and the other end portion ( 22 ) has a through hole through which the screw ( 27 ) and can be screwed into the threaded hole. Tool holder according to one of claims 1 to 3, wherein the tool holder ( 10 ) consists of plastic and in particular is a plastic injection molded part. Tool holder according to one of the preceding claims, wherein the clamping holders ( 40 ) the end regions ( 20 . 22 ) and / or the mounting bracket ( 50 ) opposite to the ring element ( 12 ) are arranged. Tool holder according to one of the preceding claims, wherein on the inner circumferential surface ( 16 ) is provided at least one inwardly directed spring tongue. Tool holder according to claim 6, wherein on the inner circumferential surface ( 16 ) at least one circumferentially extending rib ( 60 . 62 ) is provided, which at least partially over the circumference of the ring element ( 12 ). Tool holder according to one of the preceding claims, wherein the mounting bracket ( 50 ) is formed from a metal bracket, the positive or non-positive on the ring element ( 12 ) is held. Tool holder according to one of the preceding claims, wherein the screw ( 26 ) is a thumbscrew or star grip screw. Tool holder according to one of the preceding claims, wherein the clamping holders ( 40 ) in one piece with the ring element ( 12 ) are connected and radially outwardly open cylinder sections. Electric hand tool with a machine neck ( 82 ), whereby at the machine neck ( 82 ) a tool holder ( 10 ) can be fixed according to one of the preceding claims. Electric hand tool according to claim 11, wherein the machine neck ( 82 ) has a circumferentially extending groove into which the at least one spring tongue and / or rib ( 60 . 62 ) of the tool holder ( 10 ) is receivable and in particular whose extent in the axial direction only slightly larger than the axial extent of the spring tongue and / or rib ( 60 . 62 ). Electric hand tool according to claim 11 or 12, wherein the tool holder ( 10 ) non-rotatable and secured against axial pulling on the machine neck ( 82 ) is determinable.