EP4161738B1 - Device for holding a handheld machine tool - Google Patents

Description

The present invention relates to a device for holding a hand-held power tool. The device can serve as an interface between the hand-held power tool and a support or carrying structure and comprises a first and a second fastening means and a counter structure. With the proposed interface, it is possible to optimally adapt the suspension of the hand-held power tool to the center of gravity of the hand-held power tool. In addition, the interface can be adapted to different hand-held power tools or types of hand-held power tools by means of an adjustable distance between the first fastening means and the counter structure or an adjustable diameter of the counter structure. In further aspects, the invention relates to a use of the proposed interface for fastening a hand-held power tool to a support structure, as well as a corresponding method.

Background of the invention:

Heavy power tools, such as drilling, chiseling or combination hammers, as well as core drilling machines, are often used in serial or long-term applications. In order to compensate for the forces that occur, especially weight forces, the user is exposed to high physical strain, which can cause rapid fatigue or even physical damage. Therefore, many users strive to use support structures in which the handheld power tools can be hung or latched in order to reduce the physical strain. These body-worn and/or external support structures can at least partially absorb the forces that occur and thus enable the user to work with the handheld power tool for longer. Possible designs of known support structures are described in Fig.1 shown.

However, most power tools do not have any interfaces that can be used to attach the device to a support structure. Therefore, in the prior art, slings or ropes are mostly used to connect the power tools to the support structure. This approach has the disadvantage that the slings or ropes can accidentally activate switches on some handheld power tools or that the slings or ropes can get caught in the moving insert tools of the handheld power tools. This can obviously impair the operation of the hand tool or pose a risk to the user.

Another disadvantage of conventional suspension using ropes or slings is that the hand tool cannot be suspended exactly at its center of gravity using ropes or slings. This can make handling the hand tool more difficult and impair the quality of work.

For example, in the EN 10 2016 013 145 A a mounting bracket for a working device, such as a brush cutter, is disclosed. The mounting bracket is designed to be flexible and transverse to a slot, so that the slot can be widened. In the context of the EN 10 2016 013 145 A The elastic properties of a clamp are used to connect the clamp to a working tool.

In addition, the US 2018 084 895 A1 a harness to prevent a machine tool with a pistol grip from falling.

In the EP 3 560 660 A1 an arrangement for a machine tool is described, the arrangement comprising an eyelet device so that the machine tool can be attached to a safety belt by means of the eyelet device and a tensioning belt.

The US 2017 0042 314 A1 discloses a machine tool that can be carried with a sling around the shoulder of a user.

A disadvantage of the suspension solutions for hand-held power tools known from the prior art is that the elastic properties of materials, ropes or mounting clamps are often used to create a connection between a hand-held power tool and a support structure. However, such connections based on the elasticity of a material are hardly suitable for use in connection with hammering and/or rotating hand-held power tools, as they absorb the vibrations that can occur when working with the hand-held power tools and can, for example, resonate. The absorption of the vibrations can also lead to a weakening of the connection between the hand-held power tool and the support structure, which in the worst case can lead to the connection breaking down. In light of the known prior art, a fastening solution for a hand-held power tool to a support structure would be desirable that is user-friendly and less susceptible to the vibrations that occur when working with the hand-held power tools. Furthermore, the technical solution to be provided should ensure optimal balancing of the hand-held power tool in relation to the Support structure to make working with the handheld power tool even easier. In addition, it would be desirable if the technical solution to be provided could be used as universally as possible for a large number of different handheld power tools or types of handheld power tools.

The object of the present invention is to provide solutions for the technical needs described above and to provide a fastening solution for connecting a hand-held power tool to a support structure which overcomes the deficiencies and disadvantages of the prior art.

The object is thereby achieved by the subject matter of the independent claims. Advantageous embodiments of the subject matter of the independent claims can be found in the dependent subclaims.

Description of the invention:

The object is achieved by a device for receiving a hand-held power tool, wherein the hand-held power tool has a first handle and a second handle and the first handle can be fastened to the hand-held power tool with a tensioning strap.

• ein erstes Befestigungsmittel, das dazu eingerichtet ist, in Eingriff mit dem Spannband zu gelangen und einen ersten Kontaktbereich zwischen Handwerkzeugmaschine und Vorrichtung zu bilden,
• ein zweites Befestigungsmittel, mit dem die Vorrichtung an einer Stützstruktur befestigbar ist, wobei das zweite Befestigungsmittel beweglich ausgebildet ist,
• eine Gegenstruktur, die dazu eingerichtet ist, einen zweiten Kontaktbereich zwischen Handwerkzeugmaschine und Vorrichtung zu bilden,

wobei dass das zweite Befestigungsmittel als Halteöse ausgebildet ist, wobei die Halteöse mittels einer Rasterung axial entlang einer virtuellen Zentralachse, die durch die Schnittstelle verläuft, verschiebbar ist.The device can also be referred to as an interface in the sense of the invention and is characterized in that it comprises the following components:

• a first fastening means which is designed to engage with the clamping band and to form a first contact area between the hand tool and the device,
• a second fastening means with which the device can be fastened to a support structure, wherein the second fastening means is designed to be movable,
• a counter structure designed to form a second contact area between the hand tool and the device,

wherein the second fastening means is designed as a retaining eyelet, wherein the retaining eyelet is displaceable axially along a virtual central axis which runs through the interface by means of a grid.

The invention is advantageously a particularly universally applicable holding device for handling various hand-held power tools, such as rotary hammers, combination hammers or chisel hammers, as well as core drilling machines, for example. The devices that are to be connected to a support structure in the context of the present invention are preferably hand-held power tools, each of which has a first and a second second handle. It is preferred in the sense of the invention that the first handle of the power tool can preferably also be referred to as the front handle or side handle of the power tool. If the user who works with the handheld power tool is right-handed, the first handle of the handheld power tool is usually held by the left hand of the user. The first handle can be attached to the handheld power tool with a tensioning strap; it is preferably arranged in a front area of the handheld power tool. The second handle can, for example, be C- or D-shaped and is usually held by the right hand of a right-handed person. The second handle is preferably arranged in a rear area of the handheld power tool. The handheld power tool can also have a housing that surrounds the internal components of the handheld power tool in a manner known to those skilled in the art and shapes the external shape of the handheld power tool. In particular, the exterior of the handheld power tool can be shaped by its device neck. In the sense of the invention, this means that the handheld power tool can have different large diameters in the area of the first handle. A particular advantage of the proposed invention is that the proposed interface is suitable for use with handheld power tools with different diameters or housing shapes. This advantage is achieved in particular by the provision of the counter structure, which can be designed either as a receiving device for a rear area of the handheld power tool or as a retaining ring that can be replaced or is designed to be adjustable in size. The retaining ring is preferably located in a front area of the interface and in particular in spatial proximity to the first fastening means. When using an exchangeable retaining ring as the counter structure, different retaining rings can be used, the diameter of each of which corresponds to the diameter of the neck of the handheld power tool. If a size-adjustable retaining ring is used as the counter structure, the size or diameter of the retaining ring can be adapted to the diameter of the device neck. An adjustment means can be provided for this purpose in particular.

The counter structure is designed in particular to form a second contact area between the hand-held power tool and the device. The term "contact area" in the sense of the invention preferably means that the hand-held power tool and the proposed interface are in contact with each other in these areas, ie they touch each other, with the contact areas being arranged in particular on an underside of the interface. This underside of the interface can in particular be on an upper side of the hand-held power tool. It has proven to be particularly useful that the system comprising a hand-held power tool and a device has at least two contact areas. Preferably, a first contact area between the hand-held power tool and the interface is formed by the first fastening means, while a second contact area between the hand-held power tool and the interface is formed by the counter structure. It is preferred in the sense of the invention that the first contact area is in a front area of the interface, while the second contact area can also be in a front area of the interface if the counter structure is designed as a retaining ring. If the counter structure is designed as a receiving area, it is preferred in the sense of the invention that the second contact area is in a rear area of the interface. The use of a receiving area as a counter structure advantageously makes it possible to ensure a large distance between the first and second contact areas. This preferably enables particularly stable storage and mounting of the hand-held power tool within the interface. The advantage of using the retaining ring is in particular the great flexibility of the counter structure thus created.

The proposed interface is designed to accommodate a hand-held power tool. In this respect, it can also be referred to as a receiving device. The proposed device can also be used to connect the hand-held power tool to a support structure. In this context, it functions as an interface or adapter. With the proposed interface, it is possible to optimally adapt the suspension of the hand-held power tool to the center of gravity of the hand-held power tool. In other words, the hand-held power tool can be particularly well balanced with the aid of the invention. This is advantageously made possible by the interface comprising a second fastening means that is designed to be movable or displaceable with respect to a longitudinal axis of the device. In other words, the second fastening means can be moved along an axis running centrally through the interface. For this purpose, the interface comprises a grid with various receiving recesses for the second fastening means. The second fastening means can be moved over the grid and, depending on the center of gravity of the hand-held power tool, can snap into one of the recesses and be fastened. The second fastening means not only allows a hand tool to be connected to a support structure, but also allows the attachment or suspension of the hand tool to be adapted to the support structure. The second fastening means is particularly simple in design and therefore requires little maintenance. In addition, the handling of the second fastening means for adjusting the suspension of the hand-held power tool depending on its center of gravity is particularly intuitive and easy to learn. In this respect, the provision and design of the second fastening means provides a particularly user-friendly option for balancing the hand-held power tool when the hand-held power tool is to be attached to a support or carrying structure.

A further advantage of the invention is that the proposed interface enables a mechanical connection between the interface, the handheld power tool and the support structure. This overcomes in particular the disadvantage that elastic properties of materials or the like are exploited to connect the components of a work system that includes an interface, a handheld power tool and a support structure to one another. Rather, in the context of the present invention, a connection of the system components is proposed in which mechanical methods, such as bracing, clamping, clamping or clamping, are exploited in order to connect the interface, the handheld power tool and the support structure to one another in a particularly secure, stable and insensitive to vibrations.

In addition, the interface can be adapted to different handheld power tools or types of handheld power tools by an adjustable distance between the first fastening means and the counterstructure or by an adjustable diameter of the counterstructure. The proposed interface is therefore particularly universally applicable and can be used for a large number of different devices and product classes. This leads to cost savings for the user, since he only needs one interface as an adapter for hanging different handheld power tools on a support structure. The distance between the first fastening means and the counterstructure designed as a receiving area can be adjusted in particular by an adjustment means, wherein the adjustment means is preferably arranged in a front area of the interface. In the sense of the invention, this adjustment means can preferably be referred to as the first adjustment means and bear the reference number 13a. It can preferably be designed as a knurled screw. By actuating the adjustment means, the distance between the first fastening means and the receiving area can be changed, so that the distance can be optimally adjusted for larger and smaller handheld power tools. By optimally adjusting the distance between the first fastening device and the receiving area, the hand tool can be clamped to the interface securely and robustly against shocks or vibrations. If the adjusting device is designed as a knurled screw, The distance between the first fastening means and the receiving area can be adjusted by turning the knurled screw. Preferably, the distance can be adjusted continuously so that a particularly precise adjustment of the distance to the respective hand tool to be fastened or clamped can be achieved.

• ein erstes Befestigungsmittel, das dazu eingerichtet ist, in Eingriff mit dem Spannband zu gelangen und einen ersten Kontaktbereich mit der Handwerkzeugmaschine zu bilden,
• ein zweites Befestigungsmittel, mit dem die Vorrichtung an einer Stützstruktur befestigbar ist, wobei das zweite Befestigungsmittel verschiebbar ausgebildet ist,
• einen Aufnahmebereich als Gegenstruktur, um einen Teil der Handwerkzeugmaschine aufzunehmen, und
• ein Einstellmittel, um einen Abstand zwischen dem ersten Befestigungsmittel und dem Aufnahmebereich einzustellen.

In a preferred embodiment, the invention relates to a device for holding a hand-held power tool, wherein the hand-held power tool has a first handle and a second handle and the first handle can be fastened to the hand-held power tool with a tensioning strap, wherein the device comprises the following components:

• a first fastening means adapted to engage with the clamping band and form a first contact area with the hand-held power tool,
• a second fastening means with which the device can be fastened to a support structure, wherein the second fastening means is designed to be displaceable,
• a receiving area as a counter structure to accommodate a part of the hand tool, and
• an adjusting means for adjusting a distance between the first fastening means and the receiving area.

If the counter structure is designed as a retaining ring, the interface can comprise an adjustment means, which in the sense of the invention is preferably referred to as a second adjustment means and which bears the reference number 13b. The retaining ring can have a slot or be designed with a slot. The size of the slot and thus the diameter of the retaining ring can be adjusted with the second adjustment means and in particular adapted to the diameter of a handheld power tool that is to be received by the receiving device. In particular, the diameter of the counter structure designed as a retaining ring can be adapted to the diameter of a neck of the handheld power tool by the second adjustment means. As an alternative to the size-adjustable retaining ring, a kit with several retaining rings can be provided, with the retaining rings each having different diameters. Such a retaining ring can then be used as a counter structure for each handheld power tool that is to be received by the receiving device, the diameter of which corresponds to the diameter of the device neck of the desired handheld power tool. In this case, the proposed interface does not require an adjustment means.

• ein erstes Befestigungsmittel, das dazu eingerichtet ist, in Eingriff mit dem Spannband zu gelangen und einen ersten Kontaktbereich mit der Handwerkzeugmaschine zu bilden,
• ein zweites Befestigungsmittel, mit dem die Vorrichtung an einer Stützstruktur befestigbar ist, wobei das zweite Befestigungsmittel verschiebbar ausgebildet ist,
• einen Haltering als Gegenstruktur, wobei der Haltering dazu eingerichtet ist, einen zweiten Kontaktbereich zwischen Handwerkzeugmaschine und Vorrichtung zu bilden und
• optional ein Einstellmittel, um einen Durchmesser des Halterings einzustellen, wenn der Haltering größenverstellbar ausgebildet ist.

In this preferred embodiment, the invention relates to a device for holding a hand-held power tool, the device comprising the following components:

• a first fastening means adapted to engage with the clamping band and form a first contact area with the hand-held power tool,
• a second fastening means with which the device can be fastened to a support structure, wherein the second fastening means is designed to be displaceable,
• a retaining ring as a counter structure, wherein the retaining ring is designed to form a second contact area between the hand tool and the device and
• optionally an adjustment means to adjust a diameter of the retaining ring if the retaining ring is designed to be adjustable in size.

Alternatively, a kit containing multiple retaining rings may be provided, with each retaining ring in the kit having a different diameter.

The first fastening means is designed to engage with a clamping band of the hand-held power tool and thus connect the interface to a front area of the hand-held power tool. In particular, the first fastening means forms a first contact area with the hand-held power tool. The clamping band is used to attach a side handle, which is referred to as the first handle of the hand-held power tool in the sense of the invention, to the hand-held power tool. In particular, the first handle of the hand-held power tool is located in a front area of the hand-held power tool. The first fastening means can, for example, be designed as a hook or hook-shaped so that it can be guided or pushed between the clamping band and the hand-held power tool. In combination with the variable distance between the first fastening means and the receiving area or with the size-adjustable or replaceable retaining ring as a counter structure, a stable connection between the hand-held power tool and the interface can be provided. Tests have shown that this connection is particularly stable against shocks or vibrations and is therefore particularly well suited for use in construction sites.

In a preferred embodiment of the invention, the receiving area of the interface is designed to receive at least a part of the handheld power tool, so that a connection is created between the interface and the rear area of the handheld power tool or its housing. In the sense of the invention, the receiving area can preferably also be referred to as a handle holder, because the receiving area can be particularly suitable for receiving the second handle or a part of the housing of the handheld power tool, which is arranged in the area of the second handle of the handheld power tool. The second handle is located in the rear area of the handheld power tool. and is usually held by the right hand of a right-handed user. The handheld power tool can comprise a housing, wherein the receiving area of the interface preferably comprises a cavity into which a part of the housing of the handheld power tool can be inserted. This insertion or pushing in can be achieved, for example, by the adjustment means or the shortening of the distance of the receiving area to the first fastening means. In other words, the handheld power tool can be pushed into the receiving area by actuating the adjustment means. This shortens the distance of the receiving area to the first fastening means and the handheld power tool is clamped or wedged within the interface. This clamping leads to a particularly stable, mechanical connection between the interface and the handheld power tool.

The proposed device can be used to connect a hand-held power tool to a support structure. Such body-worn or external support structures usually absorb the forces or vibrations that occur when working with a hand-held power tool and support or facilitate the work of a user. Various conventional support structures, as known from the prior art, are described in Fig.1 They can be attached to a user with a torso belt or harness, for example, and/or be constructed like a gallows. Also known in the art are bracket-like structures that are passed over the user's shoulder, as well as free-standing and stand-alone structures. The specification of a specific design of the support structure is not the task of the present invention. Rather, the present invention relates to an interface as an adapter between a hand-held power tool and a support structure. However, in the context of the present invention, a system is also disclosed that comprises a hand-held power tool, an interface and a support structure, wherein the interface is designed to connect the hand-held power tool to the support structure.

In the sense of the invention, it is preferred that the first fastening means is designed as a hook, wherein the hook is designed to be pushed under the clamping band of the hand-held power tool. The use of the existing clamping band, with which a first handle is attached to the hand-held power tool, leads to synergistic effects and, surprisingly, also to a particularly stable mechanical connection between the first fastening means and the hand-held power tool. The clamping band is preferably stretched tightly around a front part of the hand-held power tool. The first fastening means forms a first contact area between the hand-held power tool and the interface. Tests have shown that the first fastening means can nevertheless be used without great effort can be pushed under the tensioning band to achieve a fastening effect. The hook, which can be used as the first fastening means, is fastened in a front part of the interface. Preferably, it is located in spatial proximity to the adjustment means and is located on the underside of the interface, which preferably faces the hand-held power tool when the interface is connected to the hand-held power tool. Preferably, the hook has a flat underside that is designed to be pushed under the tensioning band. This flat underside of the hook is preferably designed substantially parallel to a preferably flat region of the top of the hand-held power tool, so that the hook, tensioning band and hand-held power tool can engage well with one another to produce a stable connection between the components.

According to the invention, the second fastening means is designed as a holding eyelet, wherein the holding eyelet can be moved axially along a virtual central axis that runs through the interface by means of a grid. In other words, the second fastening means is designed to be movable, in particular displaceable, in relation to the interface. It can preferably be moved via a grid of the interface. Due to the displaceability of the second fastening means, its position in relation to the handheld power tool can be adapted to the center of gravity of the handheld power tool. For example, the second fastening means can be locked into the grid directly above the center of gravity of the handheld power tool. By selecting a position of the second fastening means that is adapted to the center of gravity, the handheld power tool can be optimally balanced, which can make working with the handheld power tool considerably easier for the user. In the sense of the invention, it is particularly preferred that the second fastening means is designed to be movable along a central axis of the interface so that the position of the second fastening means can be adapted to a center of gravity of the handheld power tool.

The second fastening means is provided in particular for fastening the hand-held power tool or the interface to the support structure. For example, a rope or another fastening component that can be connected to the support structure can be guided through the retaining eyelet. Of course, the second fastening means can also be designed in a different way than as a retaining eyelet, as long as it is suitable for connecting the interface to a support structure. The movement of the second fastening means preferably takes place along an axis that runs centrally or centrally through the interface. The central axis is also preferably referred to as the longitudinal axis of the interface in the sense of the invention. The position This central axis is in the Fig.4 and 5 The second fastening means is preferably arranged so as to be movable between the front and rear areas of the interface. In the attached figures, the second fastening means is located essentially centrally between the front and rear areas of the interface.

In the sense of the invention, it is preferred that the interface has a front area and a rear area, wherein the first fastening means and the optional adjustment means are arranged in the front area of the interface. If the counter structure is designed as a receiving area, it is preferably arranged in the rear area of the interface, while the counter structure is present in a front area of the interface if it is designed as a retaining ring. The front area of the handheld power tool is preferably that part of the device on which the tool holder, a first handle and the tensioning strap fastening the first handle are located. The handheld power tool extends over a housing to a final rear area in which, for example, the second handle of the handheld power tool is arranged. Preferably, the front part of the handheld power tool and the front part of the interface, as well as the rear part of the handheld power tool and the rear part of the interface correspond to one another. In the sense of the invention, the term "correspond to one another" preferably means that these areas are in spatial proximity to one another when the handheld power tool is connected to the interface.

Even if individual features of the interface are specified in relation to features of a handheld power tool, this does not cause any confusion for the person skilled in the art. Rather, the reference clarifies for which type of handheld power tool the proposed interface can be used, namely preferably those handheld power tools that have a first and a second handle, whereby the first handle can be designed as a side handle and attached to the handheld power tool with a tensioning strap. In this respect, the reference specifies the features of the proposed interface and clarifies the person skilled in the art about possible uses of the invention.

In a further embodiment of the invention, it is preferred that the adjustment means is designed as a knurled screw. Those skilled in the art know what a knurled screw is. The knurled screw is used in the context of the present invention to adjust a distance between the first fastening means and the receiving area. The knurled screw can alternatively be used to adjust a diameter of the retaining ring if the counterstructure of the interface is designed as a size-adjustable retaining ring. This advantageously makes it possible for the interface to be used for many different hand-held power tools or types of hand-held power tools.

• einen Haken, der dazu eingerichtet ist, in Eingriff mit dem Spannband zu gelangen und die Schnittstelle mit einem vorderen Bereich der Handwerkzeugmaschine zu verbinden, wobei durch den Haken ein erster Kontaktbereich zwischen Handwerkzeugmaschine und Schnittstelle gebildet wird,
• eine Halteöse, mit der die Schnittstelle an einer Stützstruktur befestigt werden kann, wobei das zweite Befestigungsmittel verschiebbar ausgebildet ist, um die Position der Halteöse in Bezug auf die Handwerkzeugmaschine an einen Schwerpunkt der Handwerkzeugmaschine anzupassen,
• eine Gegenstruktur, die einen zweiten Kontaktbereich zwischen Handwerkzeugmaschine und Schnittstelle bildet.

In other words, the interface is preferably characterized by comprising the following components and functions:

• a hook which is designed to engage with the clamping band and to connect the interface to a front region of the hand-held power tool, the hook forming a first contact region between the hand-held power tool and the interface,
• a retaining eyelet with which the interface can be attached to a support structure, wherein the second fastening means is designed to be displaceable in order to adapt the position of the retaining eyelet in relation to the hand-held power tool to a center of gravity of the hand-held power tool,
• a counter structure that forms a second contact area between the hand tool and the interface.

The interface can further have a knurled screw to adjust a distance between the hook and the counter structure, so that the interface can advantageously be used for different handheld power tools. The counter structure can preferably be designed as a receiving area to receive a part of the housing of the handheld power tool and to connect the interface to a rear area of the handheld power tool. The counter structure can alternatively be designed as a replaceable or size-adjustable retaining ring. In the sense of the invention, it is preferred that the retaining ring is arranged in a front area of the interface, preferably in spatial proximity to the first fastening means. In this embodiment of the invention, the adjusting means can be used to adjust a diameter of the retaining ring and thus adapt it to the dimensions of the handheld power tool that is to be connected to a support structure.

In one embodiment, the invention represents an interface between a hand-held power tool and a support structure or device. The hand-held power tool can be a drill, chisel or combination hammer or a hand-held core drilling device. However, various other types of hand-held power tools are also conceivable. To attach the hand-held power tool, the first fastening means of the interface, which can be designed as a front hook, for example, is clamped under the clamping band of the side handle of the hand-held power tool. Clamping bands can preferably used to attach handles or side handles to handheld power tools or to fasten them thereto. By operating the adjustment means, a distance between the hook and the handle holder can be shortened or a diameter of the retaining ring can be adjusted, whereby the tool is clamped in the holder. The adjustment means can be operated in particular by turning the knurled screw, which can be used as an adjustment means. Due to this adjustability of the distance between the first fastening means and the holder area or due to the adjustability of the diameter of the counterstructure, the proposed interface can advantageously be used for different devices with different housing sizes. Since the different devices can have very different centers of gravity, the holding eyelet, which preferably forms the second fastening means, can be moved in the axial direction using a grid. This functionality of the invention is particularly user-friendly, since the center of gravity of the handheld power tool can change considerably, for example, when using different tools such as drills, chisels or core bits. Thanks to the movable second fastening means, the user can easily and without great effort adjust the position of the holding eyelet to the possibly changed center of gravity of the hand tool when changing the tool of the hand tool and can therefore continue working comfortably without losing much time. In particular, the hand tool can be easily balanced at any time thanks to the movable second fastening means, whereby the handling of the hand tool is made significantly easier by the invention.

In a second aspect, the invention relates to a use of the proposed interface for fastening a hand-held power tool to a support structure. The use is characterized in that the interface has a second fastening means with which the interface can be fastened to a support structure. Preferably, the interface can in particular have a retaining eyelet in order to fasten the interface to the support structure.

1. a) Bereitstellung einer Stützstruktur und einer Handwerkzeugmaschine,
2. b) Bereitstellung einer vorgeschlagenen Schnittstelle,
3. c) Verbinden der Handwerkzeugmaschine mit der Stützstruktur unter Verwendung eines zweiten Befestigungsmittels der Schnittstelle.

In a further aspect, the invention relates to a method for fastening a hand-held power tool to a support structure. The method is characterized by the following steps:

1. (a) provision of a support structure and a hand tool,
2. b) provision of a proposed interface,
3. c) Connecting the hand tool to the support structure using a second interface fastener.

The terms, definitions and technical advantages introduced for the interface preferably apply to their use and the proposed procedure analogously.

Further advantages of the invention will become apparent from the following description of the figures. The figures show various embodiments of the present invention. The

Figures, the description and the claims contain numerous features in combination. The person skilled in the art will also expediently consider the features individually and combine them into further meaningful combinations.

Fig. 1

Ansichten von verschiedenen Stützstrukturen

Fig. 2

Seitenansicht einer exemplarischen Handwerkzeugmaschine, die mit einer bevorzugten Ausführungsform einer Schnittstelle verbunden ist.

Fig. 3

schräge Vorderansicht einer exemplarischen Handwerkzeugmaschine, die mit einer bevorzugten Ausführungsform der Schnittstelle verbunden ist.

Fig. 4

Seitenansicht einer bevorzugten Ausführungsform der Schnittstelle

Fig. 5

Draufsicht einer bevorzugten Ausführungsform der Schnittstelle

Fig. 6

Seitenansicht einer zweiten bevorzugten Ausführungsform der Schnittstelle

Fig. 7

Schrägansicht der zweiten bevorzugten Ausführungsform der Schnittstelle

Fig. 8

Seitenansicht der zweiten bevorzugten Ausführungsform der Schnittstelle

In the figures, identical and similar components are numbered with the same reference numerals. They show:

Fig.1

Views of various support structures

Fig. 2

Side view of an exemplary handheld power tool connected to a preferred embodiment of an interface.

Fig.3

oblique front view of an exemplary hand tool connected to a preferred embodiment of the interface.

Fig.4

Side view of a preferred embodiment of the interface

Fig.5

Top view of a preferred embodiment of the interface

Fig.6

Side view of a second preferred embodiment of the interface

Fig.7

Oblique view of the second preferred embodiment of the interface

Fig.8

Side view of the second preferred embodiment of the interface

Examples of implementation and figure description:

Figure 1 shows views of various support structures (10) as known from the prior art. The support structures (10) can be connected to hand-held power tools (2), whereby hardly any technically satisfactory solutions have been known to date to ensure a stable, safe and robust connection between the support structure (10) and the hand-held power tool (2). Such a technical solution, which is also easy to use, allows the position of the hand-held power tool (2) to be adjusted in relation to the support structure (10) to the center of gravity of the hand-held power tool (2) and is universal, i.e. can be used for a particularly large number of different hand-held power tools (2) or types of hand-held power tools (2), is provided by the present invention. This invention is described in the Fig. 2 to 5 shown.

The Figures 2 to 5 show a first embodiment of the invention, in which a counter structure (11) is designed as a receiving area and is present in the rear area (17) of the interface (1). In particular, Fig. 2 a side view of an exemplary hand-held power tool (2) which is connected to a preferred embodiment of the proposed interface (1) («connected state»). The hand-held power tool (2) can be a battery-operated device or a device with a mains connection. In the Fig. 2 In the embodiment of the invention shown, the interface (1) is located on an upper side of the hand-held power tool (2). The hand-held power tool (2) has a housing (3), a first handle (4) and a second handle (5), the first handle (4) being located in a front region (8) of the hand-held power tool (2) and being fastened to the hand-held power tool (2) with a tensioning band (6). In particular, the tensioning band (6) can be arranged all the way around the front region (8) of the hand-held power tool (2), and is usually firmly or tightly tensioned. The first fastening means (7) of the interface (1) can be pushed between the tensioning band (6) and the hand-held power tool (2). The first fastening means (7) can in particular be designed as a hook, so that a flat underside of the first fastening means (7) rests on a preferably flat section of the upper side of the hand-held power tool (2). This creates a connection between the first fastening means (7) of the interface (1) and the hand-held power tool (2).

The adjustment means (13a), which can be designed as a knurled screw, is also located in the front area (16) of the interface (1). With it, a distance between the first fastening means (7) and a receiving area of the interface (1) can be changed, whereby the receiving area can represent a counter structure (11) in the sense of the invention. The receiving area is preferably located in a rear area (17) of the interface (1). If the interface (1) is to be connected to a hand-held power tool (2), the distance between the first fastening means (7) and the receiving area can be shortened with the adjustment means (13a), so that the hand-held power tool (2) is clamped or fixed in the interface (1). The receiving area of the interface (1) can, for example, be at least partially hollow or have a cavity, wherein the receiving area can accommodate a part of the power tool (2) or the housing (3) of the hand-held power tool (2) in this cavity. By accommodating a part of the hand-held power tool (2) in the receiving area or a cavity in the receiving area, a particularly stable, mechanical connection between the interface (1) and the hand-held power tool (2) can be made possible.

The second handle (5) of the handheld power tool (2) is preferably located in a rear region (12) of the handheld power tool (2). On an upper side of the interface (1) there is a grid (14), with the aid of which the second fastening means (9) of the interface (1) can be moved along a central axis (15) of the interface (1). Due to the movable design of the second fastening means (9), its position can be adapted to a center of gravity of the handheld power tool (2). This function is particularly advantageous if the center of gravity of a handheld power tool (2) changes, for example due to a change of tool, such as a drill, chisel or core bit, of the handheld power tool (2).

Fig.3 shows an oblique front view of an exemplary hand-held power tool (2) connected to the first preferred embodiment of the interface (1). Shown in Fig.3 especially the contact areas (18, 19). In the Fig.3 In the embodiment of the invention shown, the first contact region (18) is in the region of the tensioning strap (6) of the hand-held power tool (2) or of the first fastening means (7) of the interface (1), while the second contact region (19) is in the region of the basic structure (11) designed as a receiving region. In the contact regions (18, 19) there is preferably contact between the interface (1) and the hand-held power tool (2), i.e. in these regions (18, 19) the interface (1) and the hand-held power tool (2) touch one another. The first contact region (18) is preferably formed by the first fastening means (7), preferably designed as a hook, and the tensioning strap (6) or the hand-held power tool (2), while the second contact region (19) is formed by the receiving region and the rear region (12) of the housing of the hand-held power tool (2).

Fig.4 shows a side view of the first preferred embodiment of the interface (1), wherein the interface (1) is in the Fig.4 shown view is not connected to a hand-held power tool (2) ("unconnected state"). The left half of the image shows the front area (16) of the interface (1) and the right half of the image shows the rear area (17) of the interface (1). The adjustment means (13a) and the first fastening means (7) are located in the front area (16) of the interface (1). In a particularly preferred embodiment of the invention, these can be formed by a knurled screw (13) and a hook (7). The hook (7) is designed to engage with a tensioning band (6) of the hand-held power tool (2). The hook (7) forms in particular a first contact area (18) with the hand-held power tool (2). The adjustment means (13a) can be used to adjust a distance between the first fastening means (7) and the receiving area of the interface (1), the receiving area being located in the rear area (17) of the interface (1). In the first preferred embodiment of the invention, the receiving area forms the counter structure (11) and is preferably designed to receive a part of the hand-held power tool (2) or to establish a connection between the interface (1) and the rear area (12) of the hand-held power tool (2). The receiving area can preferably also be referred to as a "handle holder".

In the upper area of the interface (1) there is a grid (14) which enables an axial movement of the second fastening means (9) along a central axis (15) of the interface (1). The central axis (15) preferably runs essentially parallel to the grid (14) of the interface (1). Due to the movable design of the second fastening means (9), which can in particular be designed as a holding eyelet, the position of the second fastening means (9) can be adapted to the center of gravity of the hand-held power tool (2). The second fastening means (9) is in particular intended to connect the hand-held power tool (2) to a support structure (10).

Fig.5 shows a plan view of the first preferred embodiment of the interface (1). In the plan view of the Fig.5 In the interface (1) shown, the position and course of the central axis (15) of the interface (1) can be clearly seen.

The Figures 6 to 8 show a second embodiment of the invention, in which a counter structure (11) is designed as a retaining ring and is located in the front area (16) of the interface (1). The retaining ring can be placed around the neck of a hand-held power tool (2) and adjusted to the size or circumference of the hand-held power tool neck using an adjusting means (13b). The first fastening means (7), which is preferably designed as a hook forms a first contact area (18) and is located in spatial proximity to the counterstructure (11) designed as a retaining ring.

Fig.7 shows an oblique front view of the second preferred embodiment of the interface (1). In the front area (16) of the interface (1) there is the counter structure (11) which forms the second contact area (19) with the handheld power tool (2, not shown). The contact is formed in particular by placing the retaining ring around the neck of the handheld power tool (2). The retaining ring has a slot in its upper area, whereby the size of this slot-shaped opening can be adjusted. This is preferably done with the adjustment means (13b), which can in particular be designed as a knurled screw. In the sense of the invention, it is preferred that the adjustment means (13b) is set up to adjust a diameter of the base structure (11) designed as a retaining ring, whereby the base structure (11) or the device (1) can be adapted particularly flexibly to different handheld power tools (2) or their dimensions.

The two contact areas (18, 19) preferably serve to provide stability to the system comprising the handheld power tool (2) and the interface (1). In particular, the provision of two contact areas (18, 19) enables the handheld power tool (2) to be suspended in the device (1) with little vibration. The retaining ring of the base structure (11) advantageously encloses the neck of the handheld power tool (2), so that a particularly stable connection between the handheld power tool (2) and the device (1) can be achieved.

Fig.8 shows a side view of the second preferred embodiment of the interface (1). The first fastening means (7) and the basic structure (11) in the front area (16) of the interface (1) can be clearly seen, wherein the first fastening means (7), preferably designed as a hook, forms a first contact area (18) between the hand-held power tool (2) and the device (1), while the basic structure (11), preferably designed as a retaining ring, forms a second contact area (19) between the hand-held power tool (2) and the device (1).

List of reference symbols

1

Device or interface

2

Hand tool machine

3

Housing of the hand tool

4

First handle of the hand tool

5

Second handle of the hand tool

6

Clamping strap of the hand tool

7

First fastener

8th

Front area of the hand tool

9

Second fastener

10

Support structure

11

Recording area

12

Rear area of the hand tool

13

Adjustment means

14

Rasterization

15

Virtual central axis through the hand tool machine

16

Front area of the interface

17

Rear area of the interface

18

First contact area

19

Second contact area

Claims (10)

1. Device (1) for receiving a hand-held power tool (2), wherein the hand-held power tool (2) has a first handle (4) and a second handle (5) and the first handle (4) is fastenable with a tightening strap (6) to the hand-held power tool (2),
   wherein the device (1) comprises the following components:

   - a first fastening means (7) which is designed to enter into engagement with the tightening strap (6) and to form a first contact region (18) between hand-held power tool (2) and device (1),

   - a second fastening means (9) with which the device (1) is fastenable to a support structure (10), wherein the second fastening means (9) is designed to be movable,

   - a counter structure (11) which is designed to form a second contact region (19) between hand-held power tool (2) and device (1), characterized in that the second fastening means (9) is designed as a retaining eyelet, wherein the retaining eyelet is displaceable axially along a virtual central axis (15) running through the device (1) by means of a grid (14).
2. Device (1) according to Claim 1,
   characterized in that
   the first fastening means (7) is designed as a hook, wherein the hook is designed to be pushed under the tightening strap (6) of the hand-held power tool (2).
3. Device (1) according to Claim 1 or 2,
   characterized in that
   the second fastening means (9) is designed to be movable along a virtual central axis (15) of the device (1) so that the position of the second fastening means (9) can be adapted to a centre of gravity of the hand-held power tool (2).
4. Device (1) according to one of the preceding claims,
   characterized in that
   the counter structure (11) is designed as a receiving region in order to receive part of the hand-held power tool (2).
5. Device (1) according to Claim 4,
   characterized in that
   the device comprises an adjustment means (13a) in order to adjust a distance between the first fastening means (7) and the counter structure (11) designed as a receiving region.
6. Device (1) according to one of Claims 1 to 3,
   characterized in that
   the counter structure (11) is designed as a retaining ring (11).
7. Device (1) according to Claim 6,
   characterized in that
   the device comprises an adjustment means (13b) in order to adjust a diameter of the counter structure (11) designed as a retaining ring.
8. Device (1) according to either of Claims 5 and 7,
   characterized in that
   the adjustment means (13a or 13b) is designed as a knurled screw.
9. Use of a device (1) according to one of the preceding claims for fastening a hand-held power tool (2) to a support structure (10),
   characterized in that
   the device (1) has a second fastening means (9) with which the device (1) is fastenable to the support structure (10).
10. Method for fastening a hand-held power tool (2) to a support structure (10), wherein the method is characterized by the following steps:

    a) providing a support structure (10) and a hand-held power tool (2),

    b) providing a device (1) according to one of Claims 1 to 8,

    c) connecting the hand-held power tool (2) to the support structure (10) using a second fastening means (9) of the device (1).

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